net/wireless/nl80211.c

   1 /*
   2  * This is the new netlink-based wireless configuration interface.
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2014  Intel Mobile Communications GmbH
   6  * Copyright 2015-2017  Intel Deutschland GmbH
   7  * Copyright (C) 2018 Intel Corporation
   8  */
   9
  10 #include <linux/if.h>
  11 #include <linux/module.h>
  12 #include <linux/err.h>
  13 #include <linux/slab.h>
  14 #include <linux/list.h>
  15 #include <linux/if_ether.h>
  16 #include <linux/ieee80211.h>
  17 #include <linux/nl80211.h>
  18 #include <linux/rtnetlink.h>
  19 #include <linux/netlink.h>
  20 #include <linux/nospec.h>
  21 #include <linux/etherdevice.h>
  22 #include <net/net_namespace.h>
  23 #include <net/genetlink.h>
  24 #include <net/cfg80211.h>
  25 #include <net/sock.h>
  26 #include <net/inet_connection_sock.h>
  27 #include "core.h"
  28 #include "nl80211.h"
  29 #include "reg.h"
  30 #include "rdev-ops.h"
  31
  32 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  33                                    struct genl_info *info,
  34                                    struct cfg80211_crypto_settings *settings,
  35                                    int cipher_limit);
  36
  37 /* the netlink family */
  38 static struct genl_family nl80211_fam;
  39
  40 /* multicast groups */
  41 enum nl80211_multicast_groups {
  42         NL80211_MCGRP_CONFIG,
  43         NL80211_MCGRP_SCAN,
  44         NL80211_MCGRP_REGULATORY,
  45         NL80211_MCGRP_MLME,
  46         NL80211_MCGRP_VENDOR,
  47         NL80211_MCGRP_NAN,
  48         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  49 };
  50
  51 static const struct genl_multicast_group nl80211_mcgrps[] = {
  52         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  53         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  54         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  55         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  56         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  57         [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
  58 #ifdef CONFIG_NL80211_TESTMODE
  59         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  60 #endif
  61 };
  62
  63 /* returns ERR_PTR values */
  64 static struct wireless_dev *
  65 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  66 {
  67         struct cfg80211_registered_device *rdev;
  68         struct wireless_dev *result = NULL;
  69         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  70         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  71         u64 wdev_id;
  72         int wiphy_idx = -1;
  73         int ifidx = -1;
  74
  75         ASSERT_RTNL();
  76
  77         if (!have_ifidx && !have_wdev_id)
  78                 return ERR_PTR(-EINVAL);
  79
  80         if (have_ifidx)
  81                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  82         if (have_wdev_id) {
  83                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  84                 wiphy_idx = wdev_id >> 32;
  85         }
  86
  87         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  88                 struct wireless_dev *wdev;
  89
  90                 if (wiphy_net(&rdev->wiphy) != netns)
  91                         continue;
  92
  93                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  94                         continue;
  95
  96                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  97                         if (have_ifidx && wdev->netdev &&
  98                             wdev->netdev->ifindex == ifidx) {
  99                                 result = wdev;
 100                                 break;
 101                         }
 102                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 103                                 result = wdev;
 104                                 break;
 105                         }
 106                 }
 107
 108                 if (result)
 109                         break;
 110         }
 111
 112         if (result)
 113                 return result;
 114         return ERR_PTR(-ENODEV);
 115 }
 116
 117 static struct cfg80211_registered_device *
 118 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 119 {
 120         struct cfg80211_registered_device *rdev = NULL, *tmp;
 121         struct net_device *netdev;
 122
 123         ASSERT_RTNL();
 124
 125         if (!attrs[NL80211_ATTR_WIPHY] &&
 126             !attrs[NL80211_ATTR_IFINDEX] &&
 127             !attrs[NL80211_ATTR_WDEV])
 128                 return ERR_PTR(-EINVAL);
 129
 130         if (attrs[NL80211_ATTR_WIPHY])
 131                 rdev = cfg80211_rdev_by_wiphy_idx(
 132                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 133
 134         if (attrs[NL80211_ATTR_WDEV]) {
 135                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 136                 struct wireless_dev *wdev;
 137                 bool found = false;
 138
 139                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 140                 if (tmp) {
 141                         /* make sure wdev exists */
 142                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 143                                 if (wdev->identifier != (u32)wdev_id)
 144                                         continue;
 145                                 found = true;
 146                                 break;
 147                         }
 148
 149                         if (!found)
 150                                 tmp = NULL;
 151
 152                         if (rdev && tmp != rdev)
 153                                 return ERR_PTR(-EINVAL);
 154                         rdev = tmp;
 155                 }
 156         }
 157
 158         if (attrs[NL80211_ATTR_IFINDEX]) {
 159                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 160
 161                 netdev = __dev_get_by_index(netns, ifindex);
 162                 if (netdev) {
 163                         if (netdev->ieee80211_ptr)
 164                                 tmp = wiphy_to_rdev(
 165                                         netdev->ieee80211_ptr->wiphy);
 166                         else
 167                                 tmp = NULL;
 168
 169                         /* not wireless device -- return error */
 170                         if (!tmp)
 171                                 return ERR_PTR(-EINVAL);
 172
 173                         /* mismatch -- return error */
 174                         if (rdev && tmp != rdev)
 175                                 return ERR_PTR(-EINVAL);
 176
 177                         rdev = tmp;
 178                 }
 179         }
 180
 181         if (!rdev)
 182                 return ERR_PTR(-ENODEV);
 183
 184         if (netns != wiphy_net(&rdev->wiphy))
 185                 return ERR_PTR(-ENODEV);
 186
 187         return rdev;
 188 }
 189
 190 /*
 191  * This function returns a pointer to the driver
 192  * that the genl_info item that is passed refers to.
 193  *
 194  * The result of this can be a PTR_ERR and hence must
 195  * be checked with IS_ERR() for errors.
 196  */
 197 static struct cfg80211_registered_device *
 198 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 199 {
 200         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 201 }
 202
 203 /* policy for the attributes */
 204 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 205         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 206         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 207                                       .len = 20-1 },
 208         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 209
 210         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 211         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 212         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 213         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 214         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 215
 216         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 217         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 218         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 219         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 220         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 221         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 222
 223         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 224         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 225         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 226
 227         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 228         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 229
 230         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 231         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 232                                     .len = WLAN_MAX_KEY_LEN },
 233         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 234         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 235         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 236         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 237         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 238
 239         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 240         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 241         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 242                                        .len = IEEE80211_MAX_DATA_LEN },
 243         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 244                                        .len = IEEE80211_MAX_DATA_LEN },
 245         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 246         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 247         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 248         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 249                                                .len = NL80211_MAX_SUPP_RATES },
 250         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 251         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 252         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 253         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 254                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 255         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 256
 257         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 258         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 259
 260         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 261         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 262         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 263         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 264                                            .len = NL80211_MAX_SUPP_RATES },
 265         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 266
 267         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 268         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 269
 270         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 271
 272         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 273         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 274                               .len = IEEE80211_MAX_DATA_LEN },
 275         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 276         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 277
 278         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 279                                 .len = IEEE80211_MAX_SSID_LEN },
 280         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 281         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 282         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 283         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 284         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 285         [NL80211_ATTR_STA_FLAGS2] = {
 286                 .len = sizeof(struct nl80211_sta_flag_update),
 287         },
 288         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 289         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 290         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 291         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 292         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 293         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 294         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 295         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 296         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 297         [NL80211_ATTR_PMKID] = { .len = WLAN_PMKID_LEN },
 298         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 299         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 300         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 301         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 302                                  .len = IEEE80211_MAX_DATA_LEN },
 303         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 304         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 305         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 306         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 307         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 308         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 309         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 310         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 311         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 312         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 313         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 314         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 315         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 316         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 317         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 318         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 319         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 320         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 321         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 322         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 323                                          .len = IEEE80211_MAX_DATA_LEN },
 324         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 325                                          .len = IEEE80211_MAX_DATA_LEN },
 326         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 327         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 328         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 329         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 330         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 331         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 332         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 333         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 334         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 335         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 336         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 337                                       .len = IEEE80211_MAX_DATA_LEN },
 338         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 339         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 340         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 341                 .len = NL80211_HT_CAPABILITY_LEN
 342         },
 343         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 344         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 345         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 346         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 347         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 348         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 349         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 350         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 351         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 352         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 353         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] = {. type = NLA_U32 },
 354         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 355         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 356         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 357         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 358         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 359         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 360         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 361                 .len = NL80211_VHT_CAPABILITY_LEN,
 362         },
 363         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 364         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 365                                   .len = IEEE80211_MAX_DATA_LEN },
 366         [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
 367         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 368         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 369         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 370         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 371         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 372         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 373         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 374         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 375         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 376         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 377         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 378         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 379         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 380                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 381         [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
 382         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 383         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 384         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 385         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 386         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 387         [NL80211_ATTR_TSID] = { .type = NLA_U8 },
 388         [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
 389         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 390         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 391         [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
 392         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 393         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 394         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 395         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 396         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 397         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 398         [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 },
 399         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 400                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 401         },
 402         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
 403         [NL80211_ATTR_NAN_MASTER_PREF] = { .type = NLA_U8 },
 404         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 405         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 406         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 407                                     .len = FILS_MAX_KEK_LEN },
 408         [NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN },
 409         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 410         [NL80211_ATTR_BSSID] = { .len = ETH_ALEN },
 411         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 412         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 413                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 414         },
 415         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 416         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 417                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 418         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 419                                           .len = FILS_ERP_MAX_REALM_LEN },
 420         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 421         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 422                                         .len = FILS_ERP_MAX_RRK_LEN },
 423         [NL80211_ATTR_FILS_CACHE_ID] = { .len = 2 },
 424         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 425         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 426         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 427
 428         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 429         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 430         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 431 };
 432
 433 /* policy for the key attributes */
 434 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 435         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 436         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 437         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 438         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 439         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 440         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 441         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 442         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 443 };
 444
 445 /* policy for the key default flags */
 446 static const struct nla_policy
 447 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 448         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 449         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 450 };
 451
 452 #ifdef CONFIG_PM
 453 /* policy for WoWLAN attributes */
 454 static const struct nla_policy
 455 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 456         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 457         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 458         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 459         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 460         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 461         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 462         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 463         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 464         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 465         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 466 };
 467
 468 static const struct nla_policy
 469 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 470         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 471         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 472         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 473         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 474         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 475         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 476         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 477                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 478         },
 479         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 480                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 481         },
 482         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 483         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 484         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 485 };
 486 #endif /* CONFIG_PM */
 487
 488 /* policy for coalesce rule attributes */
 489 static const struct nla_policy
 490 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 491         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 492         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 493         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 494 };
 495
 496 /* policy for GTK rekey offload attributes */
 497 static const struct nla_policy
 498 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 499         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 500         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 501         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 502 };
 503
 504 static const struct nla_policy
 505 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 506         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 507                                                  .len = IEEE80211_MAX_SSID_LEN },
 508         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = { .len = ETH_ALEN },
 509         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 510 };
 511
 512 static const struct nla_policy
 513 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 514         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 515         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 516 };
 517
 518 static const struct nla_policy
 519 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 520         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 521         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 522         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 523                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 524         },
 525 };
 526
 527 /* policy for NAN function attributes */
 528 static const struct nla_policy
 529 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 530         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 531         [NL80211_NAN_FUNC_SERVICE_ID] = {
 532                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 533         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 534         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 535         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 536         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 537         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 538         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN },
 539         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 540         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 541         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 542                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 543         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 544         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 545         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 546         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 547         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 548 };
 549
 550 /* policy for Service Response Filter attributes */
 551 static const struct nla_policy
 552 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 553         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 554         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 555                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 556         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 557         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 558 };
 559
 560 /* policy for packet pattern attributes */
 561 static const struct nla_policy
 562 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 563         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 564         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 565         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 566 };
 567
 568 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 569                                      struct netlink_callback *cb,
 570                                      struct cfg80211_registered_device **rdev,
 571                                      struct wireless_dev **wdev)
 572 {
 573         int err;
 574
 575         if (!cb->args[0]) {
 576                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 577                                   genl_family_attrbuf(&nl80211_fam),
 578                                   nl80211_fam.maxattr, nl80211_policy, NULL);
 579                 if (err)
 580                         return err;
 581
 582                 *wdev = __cfg80211_wdev_from_attrs(
 583                                         sock_net(skb->sk),
 584                                         genl_family_attrbuf(&nl80211_fam));
 585                 if (IS_ERR(*wdev))
 586                         return PTR_ERR(*wdev);
 587                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 588                 /* 0 is the first index - add 1 to parse only once */
 589                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 590                 cb->args[1] = (*wdev)->identifier;
 591         } else {
 592                 /* subtract the 1 again here */
 593                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 594                 struct wireless_dev *tmp;
 595
 596                 if (!wiphy)
 597                         return -ENODEV;
 598                 *rdev = wiphy_to_rdev(wiphy);
 599                 *wdev = NULL;
 600
 601                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 602                         if (tmp->identifier == cb->args[1]) {
 603                                 *wdev = tmp;
 604                                 break;
 605                         }
 606                 }
 607
 608                 if (!*wdev)
 609                         return -ENODEV;
 610         }
 611
 612         return 0;
 613 }
 614
 615 /* IE validation */
 616 static bool is_valid_ie_attr(const struct nlattr *attr)
 617 {
 618         const u8 *pos;
 619         int len;
 620
 621         if (!attr)
 622                 return true;
 623
 624         pos = nla_data(attr);
 625         len = nla_len(attr);
 626
 627         while (len) {
 628                 u8 elemlen;
 629
 630                 if (len < 2)
 631                         return false;
 632                 len -= 2;
 633
 634                 elemlen = pos[1];
 635                 if (elemlen > len)
 636                         return false;
 637
 638                 len -= elemlen;
 639                 pos += 2 + elemlen;
 640         }
 641
 642         return true;
 643 }
 644
 645 /* message building helper */
 646 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 647                                    int flags, u8 cmd)
 648 {
 649         /* since there is no private header just add the generic one */
 650         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 651 }
 652
 653 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 654                                      const struct ieee80211_reg_rule *rule)
 655 {
 656         int j;
 657         struct nlattr *nl_wmm_rules =
 658                 nla_nest_start(msg, NL80211_FREQUENCY_ATTR_WMM);
 659
 660         if (!nl_wmm_rules)
 661                 goto nla_put_failure;
 662
 663         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 664                 struct nlattr *nl_wmm_rule = nla_nest_start(msg, j);
 665
 666                 if (!nl_wmm_rule)
 667                         goto nla_put_failure;
 668
 669                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 670                                 rule->wmm_rule->client[j].cw_min) ||
 671                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 672                                 rule->wmm_rule->client[j].cw_max) ||
 673                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 674                                rule->wmm_rule->client[j].aifsn) ||
 675                     nla_put_u8(msg, NL80211_WMMR_TXOP,
 676                                rule->wmm_rule->client[j].cot))
 677                         goto nla_put_failure;
 678
 679                 nla_nest_end(msg, nl_wmm_rule);
 680         }
 681         nla_nest_end(msg, nl_wmm_rules);
 682
 683         return 0;
 684
 685 nla_put_failure:
 686         return -ENOBUFS;
 687 }
 688
 689 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 690                                    struct ieee80211_channel *chan,
 691                                    bool large)
 692 {
 693         /* Some channels must be completely excluded from the
 694          * list to protect old user-space tools from breaking
 695          */
 696         if (!large && chan->flags &
 697             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 698                 return 0;
 699
 700         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 701                         chan->center_freq))
 702                 goto nla_put_failure;
 703
 704         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 705             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 706                 goto nla_put_failure;
 707         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 708                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 709                         goto nla_put_failure;
 710                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 711                         goto nla_put_failure;
 712         }
 713         if (chan->flags & IEEE80211_CHAN_RADAR) {
 714                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 715                         goto nla_put_failure;
 716                 if (large) {
 717                         u32 time;
 718
 719                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 720
 721                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 722                                         chan->dfs_state))
 723                                 goto nla_put_failure;
 724                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 725                                         time))
 726                                 goto nla_put_failure;
 727                         if (nla_put_u32(msg,
 728                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 729                                         chan->dfs_cac_ms))
 730                                 goto nla_put_failure;
 731                 }
 732         }
 733
 734         if (large) {
 735                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 736                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 737                         goto nla_put_failure;
 738                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 739                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 740                         goto nla_put_failure;
 741                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 742                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 743                         goto nla_put_failure;
 744                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 745                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 746                         goto nla_put_failure;
 747                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 748                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 749                         goto nla_put_failure;
 750                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 751                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 752                         goto nla_put_failure;
 753                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 754                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 755                         goto nla_put_failure;
 756                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 757                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 758                         goto nla_put_failure;
 759         }
 760
 761         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 762                         DBM_TO_MBM(chan->max_power)))
 763                 goto nla_put_failure;
 764
 765         if (large) {
 766                 const struct ieee80211_reg_rule *rule =
 767                         freq_reg_info(wiphy, chan->center_freq);
 768
 769                 if (!IS_ERR(rule) && rule->wmm_rule) {
 770                         if (nl80211_msg_put_wmm_rules(msg, rule))
 771                                 goto nla_put_failure;
 772                 }
 773         }
 774
 775         return 0;
 776
 777  nla_put_failure:
 778         return -ENOBUFS;
 779 }
 780
 781 static bool nl80211_put_txq_stats(struct sk_buff *msg,
 782                                   struct cfg80211_txq_stats *txqstats,
 783                                   int attrtype)
 784 {
 785         struct nlattr *txqattr;
 786
 787 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
 788         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
 789             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
 790                 return false;                                             \
 791         } while (0)
 792
 793         txqattr = nla_nest_start(msg, attrtype);
 794         if (!txqattr)
 795                 return false;
 796
 797         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
 798         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
 799         PUT_TXQVAL_U32(FLOWS, flows);
 800         PUT_TXQVAL_U32(DROPS, drops);
 801         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
 802         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
 803         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
 804         PUT_TXQVAL_U32(COLLISIONS, collisions);
 805         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
 806         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
 807         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
 808         nla_nest_end(msg, txqattr);
 809
 810 #undef PUT_TXQVAL_U32
 811         return true;
 812 }
 813
 814 /* netlink command implementations */
 815
 816 struct key_parse {
 817         struct key_params p;
 818         int idx;
 819         int type;
 820         bool def, defmgmt;
 821         bool def_uni, def_multi;
 822 };
 823
 824 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
 825                                  struct key_parse *k)
 826 {
 827         struct nlattr *tb[NL80211_KEY_MAX + 1];
 828         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 829                                    nl80211_key_policy, info->extack);
 830         if (err)
 831                 return err;
 832
 833         k->def = !!tb[NL80211_KEY_DEFAULT];
 834         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 835
 836         if (k->def) {
 837                 k->def_uni = true;
 838                 k->def_multi = true;
 839         }
 840         if (k->defmgmt)
 841                 k->def_multi = true;
 842
 843         if (tb[NL80211_KEY_IDX])
 844                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 845
 846         if (tb[NL80211_KEY_DATA]) {
 847                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 848                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 849         }
 850
 851         if (tb[NL80211_KEY_SEQ]) {
 852                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 853                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 854         }
 855
 856         if (tb[NL80211_KEY_CIPHER])
 857                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 858
 859         if (tb[NL80211_KEY_TYPE]) {
 860                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 861                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 862                         return genl_err_attr(info, -EINVAL,
 863                                              tb[NL80211_KEY_TYPE]);
 864         }
 865
 866         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 867                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 868
 869                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 870                                        tb[NL80211_KEY_DEFAULT_TYPES],
 871                                        nl80211_key_default_policy,
 872                                        info->extack);
 873                 if (err)
 874                         return err;
 875
 876                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 877                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 878         }
 879
 880         return 0;
 881 }
 882
 883 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 884 {
 885         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 886                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 887                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 888         }
 889
 890         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 891                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 892                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 893         }
 894
 895         if (info->attrs[NL80211_ATTR_KEY_IDX])
 896                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 897
 898         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 899                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 900
 901         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 902         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 903
 904         if (k->def) {
 905                 k->def_uni = true;
 906                 k->def_multi = true;
 907         }
 908         if (k->defmgmt)
 909                 k->def_multi = true;
 910
 911         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 912                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 913                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) {
 914                         GENL_SET_ERR_MSG(info, "key type out of range");
 915                         return -EINVAL;
 916                 }
 917         }
 918
 919         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 920                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 921                 int err = nla_parse_nested(kdt,
 922                                            NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 923                                            info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 924                                            nl80211_key_default_policy,
 925                                            info->extack);
 926                 if (err)
 927                         return err;
 928
 929                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 930                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 931         }
 932
 933         return 0;
 934 }
 935
 936 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 937 {
 938         int err;
 939
 940         memset(k, 0, sizeof(*k));
 941         k->idx = -1;
 942         k->type = -1;
 943
 944         if (info->attrs[NL80211_ATTR_KEY])
 945                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
 946         else
 947                 err = nl80211_parse_key_old(info, k);
 948
 949         if (err)
 950                 return err;
 951
 952         if (k->def && k->defmgmt) {
 953                 GENL_SET_ERR_MSG(info, "key with def && defmgmt is invalid");
 954                 return -EINVAL;
 955         }
 956
 957         if (k->defmgmt) {
 958                 if (k->def_uni || !k->def_multi) {
 959                         GENL_SET_ERR_MSG(info, "defmgmt key must be mcast");
 960                         return -EINVAL;
 961                 }
 962         }
 963
 964         if (k->idx != -1) {
 965                 if (k->defmgmt) {
 966                         if (k->idx < 4 || k->idx > 5) {
 967                                 GENL_SET_ERR_MSG(info,
 968                                                  "defmgmt key idx not 4 or 5");
 969                                 return -EINVAL;
 970                         }
 971                 } else if (k->def) {
 972                         if (k->idx < 0 || k->idx > 3) {
 973                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
 974                                 return -EINVAL;
 975                         }
 976                 } else {
 977                         if (k->idx < 0 || k->idx > 5) {
 978                                 GENL_SET_ERR_MSG(info, "key idx not 0-5");
 979                                 return -EINVAL;
 980                         }
 981                 }
 982         }
 983
 984         return 0;
 985 }
 986
 987 static struct cfg80211_cached_keys *
 988 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 989                        struct genl_info *info, bool *no_ht)
 990 {
 991         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
 992         struct key_parse parse;
 993         struct nlattr *key;
 994         struct cfg80211_cached_keys *result;
 995         int rem, err, def = 0;
 996         bool have_key = false;
 997
 998         nla_for_each_nested(key, keys, rem) {
 999                 have_key = true;
1000                 break;
1001         }
1002
1003         if (!have_key)
1004                 return NULL;
1005
1006         result = kzalloc(sizeof(*result), GFP_KERNEL);
1007         if (!result)
1008                 return ERR_PTR(-ENOMEM);
1009
1010         result->def = -1;
1011
1012         nla_for_each_nested(key, keys, rem) {
1013                 memset(&parse, 0, sizeof(parse));
1014                 parse.idx = -1;
1015
1016                 err = nl80211_parse_key_new(info, key, &parse);
1017                 if (err)
1018                         goto error;
1019                 err = -EINVAL;
1020                 if (!parse.p.key)
1021                         goto error;
1022                 if (parse.idx < 0 || parse.idx > 3) {
1023                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1024                         goto error;
1025                 }
1026                 if (parse.def) {
1027                         if (def) {
1028                                 GENL_SET_ERR_MSG(info,
1029                                                  "only one key can be default");
1030                                 goto error;
1031                         }
1032                         def = 1;
1033                         result->def = parse.idx;
1034                         if (!parse.def_uni || !parse.def_multi)
1035                                 goto error;
1036                 } else if (parse.defmgmt)
1037                         goto error;
1038                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1039                                                      parse.idx, false, NULL);
1040                 if (err)
1041                         goto error;
1042                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1043                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1044                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1045                         err = -EINVAL;
1046                         goto error;
1047                 }
1048                 result->params[parse.idx].cipher = parse.p.cipher;
1049                 result->params[parse.idx].key_len = parse.p.key_len;
1050                 result->params[parse.idx].key = result->data[parse.idx];
1051                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1052
1053                 /* must be WEP key if we got here */
1054                 if (no_ht)
1055                         *no_ht = true;
1056         }
1057
1058         if (result->def < 0) {
1059                 err = -EINVAL;
1060                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1061                 goto error;
1062         }
1063
1064         return result;
1065  error:
1066         kfree(result);
1067         return ERR_PTR(err);
1068 }
1069
1070 static int nl80211_key_allowed(struct wireless_dev *wdev)
1071 {
1072         ASSERT_WDEV_LOCK(wdev);
1073
1074         switch (wdev->iftype) {
1075         case NL80211_IFTYPE_AP:
1076         case NL80211_IFTYPE_AP_VLAN:
1077         case NL80211_IFTYPE_P2P_GO:
1078         case NL80211_IFTYPE_MESH_POINT:
1079                 break;
1080         case NL80211_IFTYPE_ADHOC:
1081         case NL80211_IFTYPE_STATION:
1082         case NL80211_IFTYPE_P2P_CLIENT:
1083                 if (!wdev->current_bss)
1084                         return -ENOLINK;
1085                 break;
1086         case NL80211_IFTYPE_UNSPECIFIED:
1087         case NL80211_IFTYPE_OCB:
1088         case NL80211_IFTYPE_MONITOR:
1089         case NL80211_IFTYPE_NAN:
1090         case NL80211_IFTYPE_P2P_DEVICE:
1091         case NL80211_IFTYPE_WDS:
1092         case NUM_NL80211_IFTYPES:
1093                 return -EINVAL;
1094         }
1095
1096         return 0;
1097 }
1098
1099 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1100                                                         struct nlattr *tb)
1101 {
1102         struct ieee80211_channel *chan;
1103
1104         if (tb == NULL)
1105                 return NULL;
1106         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1107         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1108                 return NULL;
1109         return chan;
1110 }
1111
1112 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1113 {
1114         struct nlattr *nl_modes = nla_nest_start(msg, attr);
1115         int i;
1116
1117         if (!nl_modes)
1118                 goto nla_put_failure;
1119
1120         i = 0;
1121         while (ifmodes) {
1122                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1123                         goto nla_put_failure;
1124                 ifmodes >>= 1;
1125                 i++;
1126         }
1127
1128         nla_nest_end(msg, nl_modes);
1129         return 0;
1130
1131 nla_put_failure:
1132         return -ENOBUFS;
1133 }
1134
1135 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1136                                           struct sk_buff *msg,
1137                                           bool large)
1138 {
1139         struct nlattr *nl_combis;
1140         int i, j;
1141
1142         nl_combis = nla_nest_start(msg,
1143                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
1144         if (!nl_combis)
1145                 goto nla_put_failure;
1146
1147         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1148                 const struct ieee80211_iface_combination *c;
1149                 struct nlattr *nl_combi, *nl_limits;
1150
1151                 c = &wiphy->iface_combinations[i];
1152
1153                 nl_combi = nla_nest_start(msg, i + 1);
1154                 if (!nl_combi)
1155                         goto nla_put_failure;
1156
1157                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1158                 if (!nl_limits)
1159                         goto nla_put_failure;
1160
1161                 for (j = 0; j < c->n_limits; j++) {
1162                         struct nlattr *nl_limit;
1163
1164                         nl_limit = nla_nest_start(msg, j + 1);
1165                         if (!nl_limit)
1166                                 goto nla_put_failure;
1167                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1168                                         c->limits[j].max))
1169                                 goto nla_put_failure;
1170                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1171                                                 c->limits[j].types))
1172                                 goto nla_put_failure;
1173                         nla_nest_end(msg, nl_limit);
1174                 }
1175
1176                 nla_nest_end(msg, nl_limits);
1177
1178                 if (c->beacon_int_infra_match &&
1179                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1180                         goto nla_put_failure;
1181                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1182                                 c->num_different_channels) ||
1183                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1184                                 c->max_interfaces))
1185                         goto nla_put_failure;
1186                 if (large &&
1187                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1188                                 c->radar_detect_widths) ||
1189                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1190                                 c->radar_detect_regions)))
1191                         goto nla_put_failure;
1192                 if (c->beacon_int_min_gcd &&
1193                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1194                                 c->beacon_int_min_gcd))
1195                         goto nla_put_failure;
1196
1197                 nla_nest_end(msg, nl_combi);
1198         }
1199
1200         nla_nest_end(msg, nl_combis);
1201
1202         return 0;
1203 nla_put_failure:
1204         return -ENOBUFS;
1205 }
1206
1207 #ifdef CONFIG_PM
1208 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1209                                         struct sk_buff *msg)
1210 {
1211         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1212         struct nlattr *nl_tcp;
1213
1214         if (!tcp)
1215                 return 0;
1216
1217         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1218         if (!nl_tcp)
1219                 return -ENOBUFS;
1220
1221         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1222                         tcp->data_payload_max))
1223                 return -ENOBUFS;
1224
1225         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1226                         tcp->data_payload_max))
1227                 return -ENOBUFS;
1228
1229         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1230                 return -ENOBUFS;
1231
1232         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1233                                 sizeof(*tcp->tok), tcp->tok))
1234                 return -ENOBUFS;
1235
1236         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1237                         tcp->data_interval_max))
1238                 return -ENOBUFS;
1239
1240         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1241                         tcp->wake_payload_max))
1242                 return -ENOBUFS;
1243
1244         nla_nest_end(msg, nl_tcp);
1245         return 0;
1246 }
1247
1248 static int nl80211_send_wowlan(struct sk_buff *msg,
1249                                struct cfg80211_registered_device *rdev,
1250                                bool large)
1251 {
1252         struct nlattr *nl_wowlan;
1253
1254         if (!rdev->wiphy.wowlan)
1255                 return 0;
1256
1257         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1258         if (!nl_wowlan)
1259                 return -ENOBUFS;
1260
1261         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1262              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1263             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1264              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1265             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1266              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1267             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1268              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1269             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1270              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1271             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1272              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1273             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1274              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1275             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1276              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1277                 return -ENOBUFS;
1278
1279         if (rdev->wiphy.wowlan->n_patterns) {
1280                 struct nl80211_pattern_support pat = {
1281                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1282                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1283                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1284                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1285                 };
1286
1287                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1288                             sizeof(pat), &pat))
1289                         return -ENOBUFS;
1290         }
1291
1292         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1293             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1294                         rdev->wiphy.wowlan->max_nd_match_sets))
1295                 return -ENOBUFS;
1296
1297         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1298                 return -ENOBUFS;
1299
1300         nla_nest_end(msg, nl_wowlan);
1301
1302         return 0;
1303 }
1304 #endif
1305
1306 static int nl80211_send_coalesce(struct sk_buff *msg,
1307                                  struct cfg80211_registered_device *rdev)
1308 {
1309         struct nl80211_coalesce_rule_support rule;
1310
1311         if (!rdev->wiphy.coalesce)
1312                 return 0;
1313
1314         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1315         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1316         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1317         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1318         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1319         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1320
1321         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1322                 return -ENOBUFS;
1323
1324         return 0;
1325 }
1326
1327 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1328                                       struct ieee80211_supported_band *sband)
1329 {
1330         struct nlattr *nl_rates, *nl_rate;
1331         struct ieee80211_rate *rate;
1332         int i;
1333
1334         /* add HT info */
1335         if (sband->ht_cap.ht_supported &&
1336             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1337                      sizeof(sband->ht_cap.mcs),
1338                      &sband->ht_cap.mcs) ||
1339              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1340                          sband->ht_cap.cap) ||
1341              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1342                         sband->ht_cap.ampdu_factor) ||
1343              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1344                         sband->ht_cap.ampdu_density)))
1345                 return -ENOBUFS;
1346
1347         /* add VHT info */
1348         if (sband->vht_cap.vht_supported &&
1349             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1350                      sizeof(sband->vht_cap.vht_mcs),
1351                      &sband->vht_cap.vht_mcs) ||
1352              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1353                          sband->vht_cap.cap)))
1354                 return -ENOBUFS;
1355
1356         /* add bitrates */
1357         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1358         if (!nl_rates)
1359                 return -ENOBUFS;
1360
1361         for (i = 0; i < sband->n_bitrates; i++) {
1362                 nl_rate = nla_nest_start(msg, i);
1363                 if (!nl_rate)
1364                         return -ENOBUFS;
1365
1366                 rate = &sband->bitrates[i];
1367                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1368                                 rate->bitrate))
1369                         return -ENOBUFS;
1370                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1371                     nla_put_flag(msg,
1372                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1373                         return -ENOBUFS;
1374
1375                 nla_nest_end(msg, nl_rate);
1376         }
1377
1378         nla_nest_end(msg, nl_rates);
1379
1380         return 0;
1381 }
1382
1383 static int
1384 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1385                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1386 {
1387         u16 stypes;
1388         struct nlattr *nl_ftypes, *nl_ifs;
1389         enum nl80211_iftype ift;
1390         int i;
1391
1392         if (!mgmt_stypes)
1393                 return 0;
1394
1395         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1396         if (!nl_ifs)
1397                 return -ENOBUFS;
1398
1399         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1400                 nl_ftypes = nla_nest_start(msg, ift);
1401                 if (!nl_ftypes)
1402                         return -ENOBUFS;
1403                 i = 0;
1404                 stypes = mgmt_stypes[ift].tx;
1405                 while (stypes) {
1406                         if ((stypes & 1) &&
1407                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1408                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1409                                 return -ENOBUFS;
1410                         stypes >>= 1;
1411                         i++;
1412                 }
1413                 nla_nest_end(msg, nl_ftypes);
1414         }
1415
1416         nla_nest_end(msg, nl_ifs);
1417
1418         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1419         if (!nl_ifs)
1420                 return -ENOBUFS;
1421
1422         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1423                 nl_ftypes = nla_nest_start(msg, ift);
1424                 if (!nl_ftypes)
1425                         return -ENOBUFS;
1426                 i = 0;
1427                 stypes = mgmt_stypes[ift].rx;
1428                 while (stypes) {
1429                         if ((stypes & 1) &&
1430                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1431                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1432                                 return -ENOBUFS;
1433                         stypes >>= 1;
1434                         i++;
1435                 }
1436                 nla_nest_end(msg, nl_ftypes);
1437         }
1438         nla_nest_end(msg, nl_ifs);
1439
1440         return 0;
1441 }
1442
1443 #define CMD(op, n)                                                      \
1444          do {                                                           \
1445                 if (rdev->ops->op) {                                    \
1446                         i++;                                            \
1447                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1448                                 goto nla_put_failure;                   \
1449                 }                                                       \
1450         } while (0)
1451
1452 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1453                                         struct sk_buff *msg)
1454 {
1455         int i = 0;
1456
1457         /*
1458          * do *NOT* add anything into this function, new things need to be
1459          * advertised only to new versions of userspace that can deal with
1460          * the split (and they can't possibly care about new features...
1461          */
1462         CMD(add_virtual_intf, NEW_INTERFACE);
1463         CMD(change_virtual_intf, SET_INTERFACE);
1464         CMD(add_key, NEW_KEY);
1465         CMD(start_ap, START_AP);
1466         CMD(add_station, NEW_STATION);
1467         CMD(add_mpath, NEW_MPATH);
1468         CMD(update_mesh_config, SET_MESH_CONFIG);
1469         CMD(change_bss, SET_BSS);
1470         CMD(auth, AUTHENTICATE);
1471         CMD(assoc, ASSOCIATE);
1472         CMD(deauth, DEAUTHENTICATE);
1473         CMD(disassoc, DISASSOCIATE);
1474         CMD(join_ibss, JOIN_IBSS);
1475         CMD(join_mesh, JOIN_MESH);
1476         CMD(set_pmksa, SET_PMKSA);
1477         CMD(del_pmksa, DEL_PMKSA);
1478         CMD(flush_pmksa, FLUSH_PMKSA);
1479         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1480                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1481         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1482         CMD(mgmt_tx, FRAME);
1483         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1484         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1485                 i++;
1486                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1487                         goto nla_put_failure;
1488         }
1489         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1490             rdev->ops->join_mesh) {
1491                 i++;
1492                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1493                         goto nla_put_failure;
1494         }
1495         CMD(set_wds_peer, SET_WDS_PEER);
1496         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1497                 CMD(tdls_mgmt, TDLS_MGMT);
1498                 CMD(tdls_oper, TDLS_OPER);
1499         }
1500         if (rdev->wiphy.max_sched_scan_reqs)
1501                 CMD(sched_scan_start, START_SCHED_SCAN);
1502         CMD(probe_client, PROBE_CLIENT);
1503         CMD(set_noack_map, SET_NOACK_MAP);
1504         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1505                 i++;
1506                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1507                         goto nla_put_failure;
1508         }
1509         CMD(start_p2p_device, START_P2P_DEVICE);
1510         CMD(set_mcast_rate, SET_MCAST_RATE);
1511 #ifdef CONFIG_NL80211_TESTMODE
1512         CMD(testmode_cmd, TESTMODE);
1513 #endif
1514
1515         if (rdev->ops->connect || rdev->ops->auth) {
1516                 i++;
1517                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1518                         goto nla_put_failure;
1519         }
1520
1521         if (rdev->ops->disconnect || rdev->ops->deauth) {
1522                 i++;
1523                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1524                         goto nla_put_failure;
1525         }
1526
1527         return i;
1528  nla_put_failure:
1529         return -ENOBUFS;
1530 }
1531
1532 struct nl80211_dump_wiphy_state {
1533         s64 filter_wiphy;
1534         long start;
1535         long split_start, band_start, chan_start, capa_start;
1536         bool split;
1537 };
1538
1539 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1540                               enum nl80211_commands cmd,
1541                               struct sk_buff *msg, u32 portid, u32 seq,
1542                               int flags, struct nl80211_dump_wiphy_state *state)
1543 {
1544         void *hdr;
1545         struct nlattr *nl_bands, *nl_band;
1546         struct nlattr *nl_freqs, *nl_freq;
1547         struct nlattr *nl_cmds;
1548         enum nl80211_band band;
1549         struct ieee80211_channel *chan;
1550         int i;
1551         const struct ieee80211_txrx_stypes *mgmt_stypes =
1552                                 rdev->wiphy.mgmt_stypes;
1553         u32 features;
1554
1555         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1556         if (!hdr)
1557                 return -ENOBUFS;
1558
1559         if (WARN_ON(!state))
1560                 return -EINVAL;
1561
1562         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1563             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1564                            wiphy_name(&rdev->wiphy)) ||
1565             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1566                         cfg80211_rdev_list_generation))
1567                 goto nla_put_failure;
1568
1569         if (cmd != NL80211_CMD_NEW_WIPHY)
1570                 goto finish;
1571
1572         switch (state->split_start) {
1573         case 0:
1574                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1575                                rdev->wiphy.retry_short) ||
1576                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1577                                rdev->wiphy.retry_long) ||
1578                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1579                                 rdev->wiphy.frag_threshold) ||
1580                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1581                                 rdev->wiphy.rts_threshold) ||
1582                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1583                                rdev->wiphy.coverage_class) ||
1584                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1585                                rdev->wiphy.max_scan_ssids) ||
1586                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1587                                rdev->wiphy.max_sched_scan_ssids) ||
1588                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1589                                 rdev->wiphy.max_scan_ie_len) ||
1590                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1591                                 rdev->wiphy.max_sched_scan_ie_len) ||
1592                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1593                                rdev->wiphy.max_match_sets) ||
1594                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1595                                 rdev->wiphy.max_sched_scan_plans) ||
1596                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1597                                 rdev->wiphy.max_sched_scan_plan_interval) ||
1598                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1599                                 rdev->wiphy.max_sched_scan_plan_iterations))
1600                         goto nla_put_failure;
1601
1602                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1603                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1604                         goto nla_put_failure;
1605                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1606                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1607                         goto nla_put_failure;
1608                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1609                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1610                         goto nla_put_failure;
1611                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1612                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1613                         goto nla_put_failure;
1614                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1615                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1616                         goto nla_put_failure;
1617                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1618                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1619                         goto nla_put_failure;
1620                 state->split_start++;
1621                 if (state->split)
1622                         break;
1623         case 1:
1624                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1625                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1626                             rdev->wiphy.cipher_suites))
1627                         goto nla_put_failure;
1628
1629                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1630                                rdev->wiphy.max_num_pmkids))
1631                         goto nla_put_failure;
1632
1633                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1634                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1635                         goto nla_put_failure;
1636
1637                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1638                                 rdev->wiphy.available_antennas_tx) ||
1639                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1640                                 rdev->wiphy.available_antennas_rx))
1641                         goto nla_put_failure;
1642
1643                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1644                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1645                                 rdev->wiphy.probe_resp_offload))
1646                         goto nla_put_failure;
1647
1648                 if ((rdev->wiphy.available_antennas_tx ||
1649                      rdev->wiphy.available_antennas_rx) &&
1650                     rdev->ops->get_antenna) {
1651                         u32 tx_ant = 0, rx_ant = 0;
1652                         int res;
1653
1654                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1655                         if (!res) {
1656                                 if (nla_put_u32(msg,
1657                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1658                                                 tx_ant) ||
1659                                     nla_put_u32(msg,
1660                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1661                                                 rx_ant))
1662                                         goto nla_put_failure;
1663                         }
1664                 }
1665
1666                 state->split_start++;
1667                 if (state->split)
1668                         break;
1669         case 2:
1670                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1671                                         rdev->wiphy.interface_modes))
1672                                 goto nla_put_failure;
1673                 state->split_start++;
1674                 if (state->split)
1675                         break;
1676         case 3:
1677                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1678                 if (!nl_bands)
1679                         goto nla_put_failure;
1680
1681                 for (band = state->band_start;
1682                      band < NUM_NL80211_BANDS; band++) {
1683                         struct ieee80211_supported_band *sband;
1684
1685                         sband = rdev->wiphy.bands[band];
1686
1687                         if (!sband)
1688                                 continue;
1689
1690                         nl_band = nla_nest_start(msg, band);
1691                         if (!nl_band)
1692                                 goto nla_put_failure;
1693
1694                         switch (state->chan_start) {
1695                         case 0:
1696                                 if (nl80211_send_band_rateinfo(msg, sband))
1697                                         goto nla_put_failure;
1698                                 state->chan_start++;
1699                                 if (state->split)
1700                                         break;
1701                         default:
1702                                 /* add frequencies */
1703                                 nl_freqs = nla_nest_start(
1704                                         msg, NL80211_BAND_ATTR_FREQS);
1705                                 if (!nl_freqs)
1706                                         goto nla_put_failure;
1707
1708                                 for (i = state->chan_start - 1;
1709                                      i < sband->n_channels;
1710                                      i++) {
1711                                         nl_freq = nla_nest_start(msg, i);
1712                                         if (!nl_freq)
1713                                                 goto nla_put_failure;
1714
1715                                         chan = &sband->channels[i];
1716
1717                                         if (nl80211_msg_put_channel(
1718                                                         msg, &rdev->wiphy, chan,
1719                                                         state->split))
1720                                                 goto nla_put_failure;
1721
1722                                         nla_nest_end(msg, nl_freq);
1723                                         if (state->split)
1724                                                 break;
1725                                 }
1726                                 if (i < sband->n_channels)
1727                                         state->chan_start = i + 2;
1728                                 else
1729                                         state->chan_start = 0;
1730                                 nla_nest_end(msg, nl_freqs);
1731                         }
1732
1733                         nla_nest_end(msg, nl_band);
1734
1735                         if (state->split) {
1736                                 /* start again here */
1737                                 if (state->chan_start)
1738                                         band--;
1739                                 break;
1740                         }
1741                 }
1742                 nla_nest_end(msg, nl_bands);
1743
1744                 if (band < NUM_NL80211_BANDS)
1745                         state->band_start = band + 1;
1746                 else
1747                         state->band_start = 0;
1748
1749                 /* if bands & channels are done, continue outside */
1750                 if (state->band_start == 0 && state->chan_start == 0)
1751                         state->split_start++;
1752                 if (state->split)
1753                         break;
1754         case 4:
1755                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1756                 if (!nl_cmds)
1757                         goto nla_put_failure;
1758
1759                 i = nl80211_add_commands_unsplit(rdev, msg);
1760                 if (i < 0)
1761                         goto nla_put_failure;
1762                 if (state->split) {
1763                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1764                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1765                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1766                                 CMD(channel_switch, CHANNEL_SWITCH);
1767                         CMD(set_qos_map, SET_QOS_MAP);
1768                         if (rdev->wiphy.features &
1769                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1770                                 CMD(add_tx_ts, ADD_TX_TS);
1771                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1772                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1773                 }
1774 #undef CMD
1775
1776                 nla_nest_end(msg, nl_cmds);
1777                 state->split_start++;
1778                 if (state->split)
1779                         break;
1780         case 5:
1781                 if (rdev->ops->remain_on_channel &&
1782                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1783                     nla_put_u32(msg,
1784                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1785                                 rdev->wiphy.max_remain_on_channel_duration))
1786                         goto nla_put_failure;
1787
1788                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1789                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1790                         goto nla_put_failure;
1791
1792                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1793                         goto nla_put_failure;
1794                 state->split_start++;
1795                 if (state->split)
1796                         break;
1797         case 6:
1798 #ifdef CONFIG_PM
1799                 if (nl80211_send_wowlan(msg, rdev, state->split))
1800                         goto nla_put_failure;
1801                 state->split_start++;
1802                 if (state->split)
1803                         break;
1804 #else
1805                 state->split_start++;
1806 #endif
1807         case 7:
1808                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1809                                         rdev->wiphy.software_iftypes))
1810                         goto nla_put_failure;
1811
1812                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1813                                                    state->split))
1814                         goto nla_put_failure;
1815
1816                 state->split_start++;
1817                 if (state->split)
1818                         break;
1819         case 8:
1820                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1821                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1822                                 rdev->wiphy.ap_sme_capa))
1823                         goto nla_put_failure;
1824
1825                 features = rdev->wiphy.features;
1826                 /*
1827                  * We can only add the per-channel limit information if the
1828                  * dump is split, otherwise it makes it too big. Therefore
1829                  * only advertise it in that case.
1830                  */
1831                 if (state->split)
1832                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1833                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1834                         goto nla_put_failure;
1835
1836                 if (rdev->wiphy.ht_capa_mod_mask &&
1837                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1838                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
1839                             rdev->wiphy.ht_capa_mod_mask))
1840                         goto nla_put_failure;
1841
1842                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1843                     rdev->wiphy.max_acl_mac_addrs &&
1844                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1845                                 rdev->wiphy.max_acl_mac_addrs))
1846                         goto nla_put_failure;
1847
1848                 /*
1849                  * Any information below this point is only available to
1850                  * applications that can deal with it being split. This
1851                  * helps ensure that newly added capabilities don't break
1852                  * older tools by overrunning their buffers.
1853                  *
1854                  * We still increment split_start so that in the split
1855                  * case we'll continue with more data in the next round,
1856                  * but break unconditionally so unsplit data stops here.
1857                  */
1858                 state->split_start++;
1859                 break;
1860         case 9:
1861                 if (rdev->wiphy.extended_capabilities &&
1862                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1863                              rdev->wiphy.extended_capabilities_len,
1864                              rdev->wiphy.extended_capabilities) ||
1865                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1866                              rdev->wiphy.extended_capabilities_len,
1867                              rdev->wiphy.extended_capabilities_mask)))
1868                         goto nla_put_failure;
1869
1870                 if (rdev->wiphy.vht_capa_mod_mask &&
1871                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1872                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
1873                             rdev->wiphy.vht_capa_mod_mask))
1874                         goto nla_put_failure;
1875
1876                 state->split_start++;
1877                 break;
1878         case 10:
1879                 if (nl80211_send_coalesce(msg, rdev))
1880                         goto nla_put_failure;
1881
1882                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1883                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1884                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1885                         goto nla_put_failure;
1886
1887                 if (rdev->wiphy.max_ap_assoc_sta &&
1888                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1889                                 rdev->wiphy.max_ap_assoc_sta))
1890                         goto nla_put_failure;
1891
1892                 state->split_start++;
1893                 break;
1894         case 11:
1895                 if (rdev->wiphy.n_vendor_commands) {
1896                         const struct nl80211_vendor_cmd_info *info;
1897                         struct nlattr *nested;
1898
1899                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1900                         if (!nested)
1901                                 goto nla_put_failure;
1902
1903                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1904                                 info = &rdev->wiphy.vendor_commands[i].info;
1905                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1906                                         goto nla_put_failure;
1907                         }
1908                         nla_nest_end(msg, nested);
1909                 }
1910
1911                 if (rdev->wiphy.n_vendor_events) {
1912                         const struct nl80211_vendor_cmd_info *info;
1913                         struct nlattr *nested;
1914
1915                         nested = nla_nest_start(msg,
1916                                                 NL80211_ATTR_VENDOR_EVENTS);
1917                         if (!nested)
1918                                 goto nla_put_failure;
1919
1920                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1921                                 info = &rdev->wiphy.vendor_events[i];
1922                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1923                                         goto nla_put_failure;
1924                         }
1925                         nla_nest_end(msg, nested);
1926                 }
1927                 state->split_start++;
1928                 break;
1929         case 12:
1930                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1931                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1932                                rdev->wiphy.max_num_csa_counters))
1933                         goto nla_put_failure;
1934
1935                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1936                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1937                         goto nla_put_failure;
1938
1939                 if (rdev->wiphy.max_sched_scan_reqs &&
1940                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
1941                                 rdev->wiphy.max_sched_scan_reqs))
1942                         goto nla_put_failure;
1943
1944                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1945                             sizeof(rdev->wiphy.ext_features),
1946                             rdev->wiphy.ext_features))
1947                         goto nla_put_failure;
1948
1949                 if (rdev->wiphy.bss_select_support) {
1950                         struct nlattr *nested;
1951                         u32 bss_select_support = rdev->wiphy.bss_select_support;
1952
1953                         nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1954                         if (!nested)
1955                                 goto nla_put_failure;
1956
1957                         i = 0;
1958                         while (bss_select_support) {
1959                                 if ((bss_select_support & 1) &&
1960                                     nla_put_flag(msg, i))
1961                                         goto nla_put_failure;
1962                                 i++;
1963                                 bss_select_support >>= 1;
1964                         }
1965                         nla_nest_end(msg, nested);
1966                 }
1967
1968                 state->split_start++;
1969                 break;
1970         case 13:
1971                 if (rdev->wiphy.num_iftype_ext_capab &&
1972                     rdev->wiphy.iftype_ext_capab) {
1973                         struct nlattr *nested_ext_capab, *nested;
1974
1975                         nested = nla_nest_start(msg,
1976                                                 NL80211_ATTR_IFTYPE_EXT_CAPA);
1977                         if (!nested)
1978                                 goto nla_put_failure;
1979
1980                         for (i = state->capa_start;
1981                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
1982                                 const struct wiphy_iftype_ext_capab *capab;
1983
1984                                 capab = &rdev->wiphy.iftype_ext_capab[i];
1985
1986                                 nested_ext_capab = nla_nest_start(msg, i);
1987                                 if (!nested_ext_capab ||
1988                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1989                                                 capab->iftype) ||
1990                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
1991                                             capab->extended_capabilities_len,
1992                                             capab->extended_capabilities) ||
1993                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1994                                             capab->extended_capabilities_len,
1995                                             capab->extended_capabilities_mask))
1996                                         goto nla_put_failure;
1997
1998                                 nla_nest_end(msg, nested_ext_capab);
1999                                 if (state->split)
2000                                         break;
2001                         }
2002                         nla_nest_end(msg, nested);
2003                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2004                                 state->capa_start = i + 1;
2005                                 break;
2006                         }
2007                 }
2008
2009                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2010                                 rdev->wiphy.nan_supported_bands))
2011                         goto nla_put_failure;
2012
2013                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2014                                             NL80211_EXT_FEATURE_TXQS)) {
2015                         struct cfg80211_txq_stats txqstats = {};
2016                         int res;
2017
2018                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2019                         if (!res &&
2020                             !nl80211_put_txq_stats(msg, &txqstats,
2021                                                    NL80211_ATTR_TXQ_STATS))
2022                                 goto nla_put_failure;
2023
2024                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2025                                         rdev->wiphy.txq_limit))
2026                                 goto nla_put_failure;
2027                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2028                                         rdev->wiphy.txq_memory_limit))
2029                                 goto nla_put_failure;
2030                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2031                                         rdev->wiphy.txq_quantum))
2032                                 goto nla_put_failure;
2033                 }
2034
2035                 /* done */
2036                 state->split_start = 0;
2037                 break;
2038         }
2039  finish:
2040         genlmsg_end(msg, hdr);
2041         return 0;
2042
2043  nla_put_failure:
2044         genlmsg_cancel(msg, hdr);
2045         return -EMSGSIZE;
2046 }
2047
2048 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2049                                     struct netlink_callback *cb,
2050                                     struct nl80211_dump_wiphy_state *state)
2051 {
2052         struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
2053         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, tb,
2054                               nl80211_fam.maxattr, nl80211_policy, NULL);
2055         /* ignore parse errors for backward compatibility */
2056         if (ret)
2057                 return 0;
2058
2059         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2060         if (tb[NL80211_ATTR_WIPHY])
2061                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2062         if (tb[NL80211_ATTR_WDEV])
2063                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2064         if (tb[NL80211_ATTR_IFINDEX]) {
2065                 struct net_device *netdev;
2066                 struct cfg80211_registered_device *rdev;
2067                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2068
2069                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2070                 if (!netdev)
2071                         return -ENODEV;
2072                 if (netdev->ieee80211_ptr) {
2073                         rdev = wiphy_to_rdev(
2074                                 netdev->ieee80211_ptr->wiphy);
2075                         state->filter_wiphy = rdev->wiphy_idx;
2076                 }
2077         }
2078
2079         return 0;
2080 }
2081
2082 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2083 {
2084         int idx = 0, ret;
2085         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2086         struct cfg80211_registered_device *rdev;
2087
2088         rtnl_lock();
2089         if (!state) {
2090                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2091                 if (!state) {
2092                         rtnl_unlock();
2093                         return -ENOMEM;
2094                 }
2095                 state->filter_wiphy = -1;
2096                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2097                 if (ret) {
2098                         kfree(state);
2099                         rtnl_unlock();
2100                         return ret;
2101                 }
2102                 cb->args[0] = (long)state;
2103         }
2104
2105         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2106                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2107                         continue;
2108                 if (++idx <= state->start)
2109                         continue;
2110                 if (state->filter_wiphy != -1 &&
2111                     state->filter_wiphy != rdev->wiphy_idx)
2112                         continue;
2113                 /* attempt to fit multiple wiphy data chunks into the skb */
2114                 do {
2115                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2116                                                  skb,
2117                                                  NETLINK_CB(cb->skb).portid,
2118                                                  cb->nlh->nlmsg_seq,
2119                                                  NLM_F_MULTI, state);
2120                         if (ret < 0) {
2121                                 /*
2122                                  * If sending the wiphy data didn't fit (ENOBUFS
2123                                  * or EMSGSIZE returned), this SKB is still
2124                                  * empty (so it's not too big because another
2125                                  * wiphy dataset is already in the skb) and
2126                                  * we've not tried to adjust the dump allocation
2127                                  * yet ... then adjust the alloc size to be
2128                                  * bigger, and return 1 but with the empty skb.
2129                                  * This results in an empty message being RX'ed
2130                                  * in userspace, but that is ignored.
2131                                  *
2132                                  * We can then retry with the larger buffer.
2133                                  */
2134                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2135                                     !skb->len && !state->split &&
2136                                     cb->min_dump_alloc < 4096) {
2137                                         cb->min_dump_alloc = 4096;
2138                                         state->split_start = 0;
2139                                         rtnl_unlock();
2140                                         return 1;
2141                                 }
2142                                 idx--;
2143                                 break;
2144                         }
2145                 } while (state->split_start > 0);
2146                 break;
2147         }
2148         rtnl_unlock();
2149
2150         state->start = idx;
2151
2152         return skb->len;
2153 }
2154
2155 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2156 {
2157         kfree((void *)cb->args[0]);
2158         return 0;
2159 }
2160
2161 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2162 {
2163         struct sk_buff *msg;
2164         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2165         struct nl80211_dump_wiphy_state state = {};
2166
2167         msg = nlmsg_new(4096, GFP_KERNEL);
2168         if (!msg)
2169                 return -ENOMEM;
2170
2171         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2172                                info->snd_portid, info->snd_seq, 0,
2173                                &state) < 0) {
2174                 nlmsg_free(msg);
2175                 return -ENOBUFS;
2176         }
2177
2178         return genlmsg_reply(msg, info);
2179 }
2180
2181 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2182         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2183         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2184         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2185         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2186         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2187 };
2188
2189 static int parse_txq_params(struct nlattr *tb[],
2190                             struct ieee80211_txq_params *txq_params)
2191 {
2192         u8 ac;
2193
2194         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2195             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2196             !tb[NL80211_TXQ_ATTR_AIFS])
2197                 return -EINVAL;
2198
2199         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2200         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2201         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2202         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2203         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2204
2205         if (ac >= NL80211_NUM_ACS)
2206                 return -EINVAL;
2207         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2208         return 0;
2209 }
2210
2211 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2212 {
2213         /*
2214          * You can only set the channel explicitly for WDS interfaces,
2215          * all others have their channel managed via their respective
2216          * "establish a connection" command (connect, join, ...)
2217          *
2218          * For AP/GO and mesh mode, the channel can be set with the
2219          * channel userspace API, but is only stored and passed to the
2220          * low-level driver when the AP starts or the mesh is joined.
2221          * This is for backward compatibility, userspace can also give
2222          * the channel in the start-ap or join-mesh commands instead.
2223          *
2224          * Monitors are special as they are normally slaved to
2225          * whatever else is going on, so they have their own special
2226          * operation to set the monitor channel if possible.
2227          */
2228         return !wdev ||
2229                 wdev->iftype == NL80211_IFTYPE_AP ||
2230                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2231                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2232                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2233 }
2234
2235 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2236                                  struct genl_info *info,
2237                                  struct cfg80211_chan_def *chandef)
2238 {
2239         u32 control_freq;
2240
2241         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2242                 return -EINVAL;
2243
2244         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2245
2246         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2247         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2248         chandef->center_freq1 = control_freq;
2249         chandef->center_freq2 = 0;
2250
2251         /* Primary channel not allowed */
2252         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2253                 return -EINVAL;
2254
2255         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2256                 enum nl80211_channel_type chantype;
2257
2258                 chantype = nla_get_u32(
2259                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2260
2261                 switch (chantype) {
2262                 case NL80211_CHAN_NO_HT:
2263                 case NL80211_CHAN_HT20:
2264                 case NL80211_CHAN_HT40PLUS:
2265                 case NL80211_CHAN_HT40MINUS:
2266                         cfg80211_chandef_create(chandef, chandef->chan,
2267                                                 chantype);
2268                         /* user input for center_freq is incorrect */
2269                         if (info->attrs[NL80211_ATTR_CENTER_FREQ1] &&
2270                             chandef->center_freq1 != nla_get_u32(
2271                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]))
2272                                 return -EINVAL;
2273                         /* center_freq2 must be zero */
2274                         if (info->attrs[NL80211_ATTR_CENTER_FREQ2] &&
2275                             nla_get_u32(info->attrs[NL80211_ATTR_CENTER_FREQ2]))
2276                                 return -EINVAL;
2277                         break;
2278                 default:
2279                         return -EINVAL;
2280                 }
2281         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2282                 chandef->width =
2283                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2284                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2285                         chandef->center_freq1 =
2286                                 nla_get_u32(
2287                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2288                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2289                         chandef->center_freq2 =
2290                                 nla_get_u32(
2291                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2292         }
2293
2294         if (!cfg80211_chandef_valid(chandef))
2295                 return -EINVAL;
2296
2297         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2298                                      IEEE80211_CHAN_DISABLED))
2299                 return -EINVAL;
2300
2301         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2302              chandef->width == NL80211_CHAN_WIDTH_10) &&
2303             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2304                 return -EINVAL;
2305
2306         return 0;
2307 }
2308
2309 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2310                                  struct net_device *dev,
2311                                  struct genl_info *info)
2312 {
2313         struct cfg80211_chan_def chandef;
2314         int result;
2315         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2316         struct wireless_dev *wdev = NULL;
2317
2318         if (dev)
2319                 wdev = dev->ieee80211_ptr;
2320         if (!nl80211_can_set_dev_channel(wdev))
2321                 return -EOPNOTSUPP;
2322         if (wdev)
2323                 iftype = wdev->iftype;
2324
2325         result = nl80211_parse_chandef(rdev, info, &chandef);
2326         if (result)
2327                 return result;
2328
2329         switch (iftype) {
2330         case NL80211_IFTYPE_AP:
2331         case NL80211_IFTYPE_P2P_GO:
2332                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2333                                                    iftype)) {
2334                         result = -EINVAL;
2335                         break;
2336                 }
2337                 if (wdev->beacon_interval) {
2338                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2339                             !(rdev->wiphy.features &
2340                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2341                                 result = -EBUSY;
2342                                 break;
2343                         }
2344
2345                         /* Only allow dynamic channel width changes */
2346                         if (chandef.chan != wdev->preset_chandef.chan) {
2347                                 result = -EBUSY;
2348                                 break;
2349                         }
2350                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2351                         if (result)
2352                                 break;
2353                 }
2354                 wdev->preset_chandef = chandef;
2355                 result = 0;
2356                 break;
2357         case NL80211_IFTYPE_MESH_POINT:
2358                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2359                 break;
2360         case NL80211_IFTYPE_MONITOR:
2361                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2362                 break;
2363         default:
2364                 result = -EINVAL;
2365         }
2366
2367         return result;
2368 }
2369
2370 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2371 {
2372         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2373         struct net_device *netdev = info->user_ptr[1];
2374
2375         return __nl80211_set_channel(rdev, netdev, info);
2376 }
2377
2378 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2379 {
2380         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2381         struct net_device *dev = info->user_ptr[1];
2382         struct wireless_dev *wdev = dev->ieee80211_ptr;
2383         const u8 *bssid;
2384
2385         if (!info->attrs[NL80211_ATTR_MAC])
2386                 return -EINVAL;
2387
2388         if (netif_running(dev))
2389                 return -EBUSY;
2390
2391         if (!rdev->ops->set_wds_peer)
2392                 return -EOPNOTSUPP;
2393
2394         if (wdev->iftype != NL80211_IFTYPE_WDS)
2395                 return -EOPNOTSUPP;
2396
2397         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2398         return rdev_set_wds_peer(rdev, dev, bssid);
2399 }
2400
2401 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2402 {
2403         struct cfg80211_registered_device *rdev;
2404         struct net_device *netdev = NULL;
2405         struct wireless_dev *wdev;
2406         int result = 0, rem_txq_params = 0;
2407         struct nlattr *nl_txq_params;
2408         u32 changed;
2409         u8 retry_short = 0, retry_long = 0;
2410         u32 frag_threshold = 0, rts_threshold = 0;
2411         u8 coverage_class = 0;
2412         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
2413
2414         ASSERT_RTNL();
2415
2416         /*
2417          * Try to find the wiphy and netdev. Normally this
2418          * function shouldn't need the netdev, but this is
2419          * done for backward compatibility -- previously
2420          * setting the channel was done per wiphy, but now
2421          * it is per netdev. Previous userland like hostapd
2422          * also passed a netdev to set_wiphy, so that it is
2423          * possible to let that go to the right netdev!
2424          */
2425
2426         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2427                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2428
2429                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2430                 if (netdev && netdev->ieee80211_ptr)
2431                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2432                 else
2433                         netdev = NULL;
2434         }
2435
2436         if (!netdev) {
2437                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2438                                                   info->attrs);
2439                 if (IS_ERR(rdev))
2440                         return PTR_ERR(rdev);
2441                 wdev = NULL;
2442                 netdev = NULL;
2443                 result = 0;
2444         } else
2445                 wdev = netdev->ieee80211_ptr;
2446
2447         /*
2448          * end workaround code, by now the rdev is available
2449          * and locked, and wdev may or may not be NULL.
2450          */
2451
2452         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2453                 result = cfg80211_dev_rename(
2454                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2455
2456         if (result)
2457                 return result;
2458
2459         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2460                 struct ieee80211_txq_params txq_params;
2461                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2462
2463                 if (!rdev->ops->set_txq_params)
2464                         return -EOPNOTSUPP;
2465
2466                 if (!netdev)
2467                         return -EINVAL;
2468
2469                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2470                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2471                         return -EINVAL;
2472
2473                 if (!netif_running(netdev))
2474                         return -ENETDOWN;
2475
2476                 nla_for_each_nested(nl_txq_params,
2477                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2478                                     rem_txq_params) {
2479                         result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2480                                                   nl_txq_params,
2481                                                   txq_params_policy,
2482                                                   info->extack);
2483                         if (result)
2484                                 return result;
2485                         result = parse_txq_params(tb, &txq_params);
2486                         if (result)
2487                                 return result;
2488
2489                         result = rdev_set_txq_params(rdev, netdev,
2490                                                      &txq_params);
2491                         if (result)
2492                                 return result;
2493                 }
2494         }
2495
2496         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2497                 result = __nl80211_set_channel(
2498                         rdev,
2499                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2500                         info);
2501                 if (result)
2502                         return result;
2503         }
2504
2505         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2506                 struct wireless_dev *txp_wdev = wdev;
2507                 enum nl80211_tx_power_setting type;
2508                 int idx, mbm = 0;
2509
2510                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2511                         txp_wdev = NULL;
2512
2513                 if (!rdev->ops->set_tx_power)
2514                         return -EOPNOTSUPP;
2515
2516                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2517                 type = nla_get_u32(info->attrs[idx]);
2518
2519                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2520                     (type != NL80211_TX_POWER_AUTOMATIC))
2521                         return -EINVAL;
2522
2523                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2524                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2525                         mbm = nla_get_u32(info->attrs[idx]);
2526                 }
2527
2528                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2529                 if (result)
2530                         return result;
2531         }
2532
2533         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2534             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2535                 u32 tx_ant, rx_ant;
2536
2537                 if ((!rdev->wiphy.available_antennas_tx &&
2538                      !rdev->wiphy.available_antennas_rx) ||
2539                     !rdev->ops->set_antenna)
2540                         return -EOPNOTSUPP;
2541
2542                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2543                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2544
2545                 /* reject antenna configurations which don't match the
2546                  * available antenna masks, except for the "all" mask */
2547                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2548                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2549                         return -EINVAL;
2550
2551                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2552                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2553
2554                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2555                 if (result)
2556                         return result;
2557         }
2558
2559         changed = 0;
2560
2561         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2562                 retry_short = nla_get_u8(
2563                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2564                 if (retry_short == 0)
2565                         return -EINVAL;
2566
2567                 changed |= WIPHY_PARAM_RETRY_SHORT;
2568         }
2569
2570         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2571                 retry_long = nla_get_u8(
2572                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2573                 if (retry_long == 0)
2574                         return -EINVAL;
2575
2576                 changed |= WIPHY_PARAM_RETRY_LONG;
2577         }
2578
2579         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2580                 frag_threshold = nla_get_u32(
2581                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2582                 if (frag_threshold < 256)
2583                         return -EINVAL;
2584
2585                 if (frag_threshold != (u32) -1) {
2586                         /*
2587                          * Fragments (apart from the last one) are required to
2588                          * have even length. Make the fragmentation code
2589                          * simpler by stripping LSB should someone try to use
2590                          * odd threshold value.
2591                          */
2592                         frag_threshold &= ~0x1;
2593                 }
2594                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2595         }
2596
2597         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2598                 rts_threshold = nla_get_u32(
2599                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2600                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2601         }
2602
2603         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2604                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2605                         return -EINVAL;
2606
2607                 coverage_class = nla_get_u8(
2608                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2609                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2610         }
2611
2612         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2613                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2614                         return -EOPNOTSUPP;
2615
2616                 changed |= WIPHY_PARAM_DYN_ACK;
2617         }
2618
2619         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
2620                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2621                                              NL80211_EXT_FEATURE_TXQS))
2622                         return -EOPNOTSUPP;
2623                 txq_limit = nla_get_u32(
2624                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
2625                 changed |= WIPHY_PARAM_TXQ_LIMIT;
2626         }
2627
2628         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
2629                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2630                                              NL80211_EXT_FEATURE_TXQS))
2631                         return -EOPNOTSUPP;
2632                 txq_memory_limit = nla_get_u32(
2633                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
2634                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
2635         }
2636
2637         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
2638                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2639                                              NL80211_EXT_FEATURE_TXQS))
2640                         return -EOPNOTSUPP;
2641                 txq_quantum = nla_get_u32(
2642                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
2643                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
2644         }
2645
2646         if (changed) {
2647                 u8 old_retry_short, old_retry_long;
2648                 u32 old_frag_threshold, old_rts_threshold;
2649                 u8 old_coverage_class;
2650                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
2651
2652                 if (!rdev->ops->set_wiphy_params)
2653                         return -EOPNOTSUPP;
2654
2655                 old_retry_short = rdev->wiphy.retry_short;
2656                 old_retry_long = rdev->wiphy.retry_long;
2657                 old_frag_threshold = rdev->wiphy.frag_threshold;
2658                 old_rts_threshold = rdev->wiphy.rts_threshold;
2659                 old_coverage_class = rdev->wiphy.coverage_class;
2660                 old_txq_limit = rdev->wiphy.txq_limit;
2661                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
2662                 old_txq_quantum = rdev->wiphy.txq_quantum;
2663
2664                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2665                         rdev->wiphy.retry_short = retry_short;
2666                 if (changed & WIPHY_PARAM_RETRY_LONG)
2667                         rdev->wiphy.retry_long = retry_long;
2668                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2669                         rdev->wiphy.frag_threshold = frag_threshold;
2670                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2671                         rdev->wiphy.rts_threshold = rts_threshold;
2672                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2673                         rdev->wiphy.coverage_class = coverage_class;
2674                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
2675                         rdev->wiphy.txq_limit = txq_limit;
2676                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
2677                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
2678                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
2679                         rdev->wiphy.txq_quantum = txq_quantum;
2680
2681                 result = rdev_set_wiphy_params(rdev, changed);
2682                 if (result) {
2683                         rdev->wiphy.retry_short = old_retry_short;
2684                         rdev->wiphy.retry_long = old_retry_long;
2685                         rdev->wiphy.frag_threshold = old_frag_threshold;
2686                         rdev->wiphy.rts_threshold = old_rts_threshold;
2687                         rdev->wiphy.coverage_class = old_coverage_class;
2688                         rdev->wiphy.txq_limit = old_txq_limit;
2689                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
2690                         rdev->wiphy.txq_quantum = old_txq_quantum;
2691                         return result;
2692                 }
2693         }
2694         return 0;
2695 }
2696
2697 static inline u64 wdev_id(struct wireless_dev *wdev)
2698 {
2699         return (u64)wdev->identifier |
2700                ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2701 }
2702
2703 static int nl80211_send_chandef(struct sk_buff *msg,
2704                                 const struct cfg80211_chan_def *chandef)
2705 {
2706         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2707                 return -EINVAL;
2708
2709         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2710                         chandef->chan->center_freq))
2711                 return -ENOBUFS;
2712         switch (chandef->width) {
2713         case NL80211_CHAN_WIDTH_20_NOHT:
2714         case NL80211_CHAN_WIDTH_20:
2715         case NL80211_CHAN_WIDTH_40:
2716                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2717                                 cfg80211_get_chandef_type(chandef)))
2718                         return -ENOBUFS;
2719                 break;
2720         default:
2721                 break;
2722         }
2723         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2724                 return -ENOBUFS;
2725         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2726                 return -ENOBUFS;
2727         if (chandef->center_freq2 &&
2728             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2729                 return -ENOBUFS;
2730         return 0;
2731 }
2732
2733 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2734                               struct cfg80211_registered_device *rdev,
2735                               struct wireless_dev *wdev, bool removal)
2736 {
2737         struct net_device *dev = wdev->netdev;
2738         u8 cmd = NL80211_CMD_NEW_INTERFACE;
2739         void *hdr;
2740
2741         if (removal)
2742                 cmd = NL80211_CMD_DEL_INTERFACE;
2743
2744         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2745         if (!hdr)
2746                 return -1;
2747
2748         if (dev &&
2749             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2750              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2751                 goto nla_put_failure;
2752
2753         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2754             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2755             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2756                               NL80211_ATTR_PAD) ||
2757             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2758             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2759                         rdev->devlist_generation ^
2760                         (cfg80211_rdev_list_generation << 2)))
2761                 goto nla_put_failure;
2762
2763         if (rdev->ops->get_channel) {
2764                 int ret;
2765                 struct cfg80211_chan_def chandef;
2766
2767                 ret = rdev_get_channel(rdev, wdev, &chandef);
2768                 if (ret == 0) {
2769                         if (nl80211_send_chandef(msg, &chandef))
2770                                 goto nla_put_failure;
2771                 }
2772         }
2773
2774         if (rdev->ops->get_tx_power) {
2775                 int dbm, ret;
2776
2777                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2778                 if (ret == 0 &&
2779                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2780                                 DBM_TO_MBM(dbm)))
2781                         goto nla_put_failure;
2782         }
2783
2784         wdev_lock(wdev);
2785         switch (wdev->iftype) {
2786         case NL80211_IFTYPE_AP:
2787                 if (wdev->ssid_len &&
2788                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2789                         goto nla_put_failure_locked;
2790                 break;
2791         case NL80211_IFTYPE_STATION:
2792         case NL80211_IFTYPE_P2P_CLIENT:
2793         case NL80211_IFTYPE_ADHOC: {
2794                 const u8 *ssid_ie;
2795                 if (!wdev->current_bss)
2796                         break;
2797                 rcu_read_lock();
2798                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
2799                                                WLAN_EID_SSID);
2800                 if (ssid_ie &&
2801                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
2802                         goto nla_put_failure_rcu_locked;
2803                 rcu_read_unlock();
2804                 break;
2805                 }
2806         default:
2807                 /* nothing */
2808                 break;
2809         }
2810         wdev_unlock(wdev);
2811
2812         if (rdev->ops->get_txq_stats) {
2813                 struct cfg80211_txq_stats txqstats = {};
2814                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
2815
2816                 if (ret == 0 &&
2817                     !nl80211_put_txq_stats(msg, &txqstats,
2818                                            NL80211_ATTR_TXQ_STATS))
2819                         goto nla_put_failure;
2820         }
2821
2822         genlmsg_end(msg, hdr);
2823         return 0;
2824
2825  nla_put_failure_rcu_locked:
2826         rcu_read_unlock();
2827  nla_put_failure_locked:
2828         wdev_unlock(wdev);
2829  nla_put_failure:
2830         genlmsg_cancel(msg, hdr);
2831         return -EMSGSIZE;
2832 }
2833
2834 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2835 {
2836         int wp_idx = 0;
2837         int if_idx = 0;
2838         int wp_start = cb->args[0];
2839         int if_start = cb->args[1];
2840         int filter_wiphy = -1;
2841         struct cfg80211_registered_device *rdev;
2842         struct wireless_dev *wdev;
2843         int ret;
2844
2845         rtnl_lock();
2846         if (!cb->args[2]) {
2847                 struct nl80211_dump_wiphy_state state = {
2848                         .filter_wiphy = -1,
2849                 };
2850
2851                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2852                 if (ret)
2853                         goto out_unlock;
2854
2855                 filter_wiphy = state.filter_wiphy;
2856
2857                 /*
2858                  * if filtering, set cb->args[2] to +1 since 0 is the default
2859                  * value needed to determine that parsing is necessary.
2860                  */
2861                 if (filter_wiphy >= 0)
2862                         cb->args[2] = filter_wiphy + 1;
2863                 else
2864                         cb->args[2] = -1;
2865         } else if (cb->args[2] > 0) {
2866                 filter_wiphy = cb->args[2] - 1;
2867         }
2868
2869         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2870                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2871                         continue;
2872                 if (wp_idx < wp_start) {
2873                         wp_idx++;
2874                         continue;
2875                 }
2876
2877                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2878                         continue;
2879
2880                 if_idx = 0;
2881
2882                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2883                         if (if_idx < if_start) {
2884                                 if_idx++;
2885                                 continue;
2886                         }
2887                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2888                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2889                                                rdev, wdev, false) < 0) {
2890                                 goto out;
2891                         }
2892                         if_idx++;
2893                 }
2894
2895                 wp_idx++;
2896         }
2897  out:
2898         cb->args[0] = wp_idx;
2899         cb->args[1] = if_idx;
2900
2901         ret = skb->len;
2902  out_unlock:
2903         rtnl_unlock();
2904
2905         return ret;
2906 }
2907
2908 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2909 {
2910         struct sk_buff *msg;
2911         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2912         struct wireless_dev *wdev = info->user_ptr[1];
2913
2914         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2915         if (!msg)
2916                 return -ENOMEM;
2917
2918         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2919                                rdev, wdev, false) < 0) {
2920                 nlmsg_free(msg);
2921                 return -ENOBUFS;
2922         }
2923
2924         return genlmsg_reply(msg, info);
2925 }
2926
2927 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2928         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2929         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2930         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2931         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2932         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2933         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2934 };
2935
2936 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2937 {
2938         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2939         int flag;
2940
2941         *mntrflags = 0;
2942
2943         if (!nla)
2944                 return -EINVAL;
2945
2946         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, nla,
2947                              mntr_flags_policy, NULL))
2948                 return -EINVAL;
2949
2950         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2951                 if (flags[flag])
2952                         *mntrflags |= (1<<flag);
2953
2954         *mntrflags |= MONITOR_FLAG_CHANGED;
2955
2956         return 0;
2957 }
2958
2959 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
2960                                      enum nl80211_iftype type,
2961                                      struct genl_info *info,
2962                                      struct vif_params *params)
2963 {
2964         bool change = false;
2965         int err;
2966
2967         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2968                 if (type != NL80211_IFTYPE_MONITOR)
2969                         return -EINVAL;
2970
2971                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2972                                           &params->flags);
2973                 if (err)
2974                         return err;
2975
2976                 change = true;
2977         }
2978
2979         if (params->flags & MONITOR_FLAG_ACTIVE &&
2980             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2981                 return -EOPNOTSUPP;
2982
2983         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2984                 const u8 *mumimo_groups;
2985                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2986
2987                 if (type != NL80211_IFTYPE_MONITOR)
2988                         return -EINVAL;
2989
2990                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2991                         return -EOPNOTSUPP;
2992
2993                 mumimo_groups =
2994                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2995
2996                 /* bits 0 and 63 are reserved and must be zero */
2997                 if ((mumimo_groups[0] & BIT(0)) ||
2998                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
2999                         return -EINVAL;
3000
3001                 params->vht_mumimo_groups = mumimo_groups;
3002                 change = true;
3003         }
3004
3005         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3006                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3007
3008                 if (type != NL80211_IFTYPE_MONITOR)
3009                         return -EINVAL;
3010
3011                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3012                         return -EOPNOTSUPP;
3013
3014                 params->vht_mumimo_follow_addr =
3015                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3016                 change = true;
3017         }
3018
3019         return change ? 1 : 0;
3020 }
3021
3022 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3023                                struct net_device *netdev, u8 use_4addr,
3024                                enum nl80211_iftype iftype)
3025 {
3026         if (!use_4addr) {
3027                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
3028                         return -EBUSY;
3029                 return 0;
3030         }
3031
3032         switch (iftype) {
3033         case NL80211_IFTYPE_AP_VLAN:
3034                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3035                         return 0;
3036                 break;
3037         case NL80211_IFTYPE_STATION:
3038                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3039                         return 0;
3040                 break;
3041         default:
3042                 break;
3043         }
3044
3045         return -EOPNOTSUPP;
3046 }
3047
3048 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3049 {
3050         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3051         struct vif_params params;
3052         int err;
3053         enum nl80211_iftype otype, ntype;
3054         struct net_device *dev = info->user_ptr[1];
3055         bool change = false;
3056
3057         memset(&params, 0, sizeof(params));
3058
3059         otype = ntype = dev->ieee80211_ptr->iftype;
3060
3061         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3062                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3063                 if (otype != ntype)
3064                         change = true;
3065                 if (ntype > NL80211_IFTYPE_MAX)
3066                         return -EINVAL;
3067         }
3068
3069         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3070                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3071
3072                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3073                         return -EINVAL;
3074                 if (netif_running(dev))
3075                         return -EBUSY;
3076
3077                 wdev_lock(wdev);
3078                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3079                              IEEE80211_MAX_MESH_ID_LEN);
3080                 wdev->mesh_id_up_len =
3081                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3082                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3083                        wdev->mesh_id_up_len);
3084                 wdev_unlock(wdev);
3085         }
3086
3087         if (info->attrs[NL80211_ATTR_4ADDR]) {
3088                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3089                 change = true;
3090                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3091                 if (err)
3092                         return err;
3093         } else {
3094                 params.use_4addr = -1;
3095         }
3096
3097         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3098         if (err < 0)
3099                 return err;
3100         if (err > 0)
3101                 change = true;
3102
3103         if (change)
3104                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3105         else
3106                 err = 0;
3107
3108         if (!err && params.use_4addr != -1)
3109                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3110
3111         return err;
3112 }
3113
3114 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3115 {
3116         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3117         struct vif_params params;
3118         struct wireless_dev *wdev;
3119         struct sk_buff *msg;
3120         int err;
3121         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3122
3123         /* to avoid failing a new interface creation due to pending removal */
3124         cfg80211_destroy_ifaces(rdev);
3125
3126         memset(&params, 0, sizeof(params));
3127
3128         if (!info->attrs[NL80211_ATTR_IFNAME])
3129                 return -EINVAL;
3130
3131         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3132                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3133                 if (type > NL80211_IFTYPE_MAX)
3134                         return -EINVAL;
3135         }
3136
3137         if (!rdev->ops->add_virtual_intf ||
3138             !(rdev->wiphy.interface_modes & (1 << type)))
3139                 return -EOPNOTSUPP;
3140
3141         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3142              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3143             info->attrs[NL80211_ATTR_MAC]) {
3144                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3145                            ETH_ALEN);
3146                 if (!is_valid_ether_addr(params.macaddr))
3147                         return -EADDRNOTAVAIL;
3148         }
3149
3150         if (info->attrs[NL80211_ATTR_4ADDR]) {
3151                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3152                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3153                 if (err)
3154                         return err;
3155         }
3156
3157         err = nl80211_parse_mon_options(rdev, type, info, &params);
3158         if (err < 0)
3159                 return err;
3160
3161         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3162         if (!msg)
3163                 return -ENOMEM;
3164
3165         wdev = rdev_add_virtual_intf(rdev,
3166                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3167                                 NET_NAME_USER, type, &params);
3168         if (WARN_ON(!wdev)) {
3169                 nlmsg_free(msg);
3170                 return -EPROTO;
3171         } else if (IS_ERR(wdev)) {
3172                 nlmsg_free(msg);
3173                 return PTR_ERR(wdev);
3174         }
3175
3176         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3177                 wdev->owner_nlportid = info->snd_portid;
3178
3179         switch (type) {
3180         case NL80211_IFTYPE_MESH_POINT:
3181                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3182                         break;
3183                 wdev_lock(wdev);
3184                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3185                              IEEE80211_MAX_MESH_ID_LEN);
3186                 wdev->mesh_id_up_len =
3187                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3188                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3189                        wdev->mesh_id_up_len);
3190                 wdev_unlock(wdev);
3191                 break;
3192         case NL80211_IFTYPE_NAN:
3193         case NL80211_IFTYPE_P2P_DEVICE:
3194                 /*
3195                  * P2P Device and NAN do not have a netdev, so don't go
3196                  * through the netdev notifier and must be added here
3197                  */
3198                 mutex_init(&wdev->mtx);
3199                 INIT_LIST_HEAD(&wdev->event_list);
3200                 spin_lock_init(&wdev->event_lock);
3201                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
3202                 spin_lock_init(&wdev->mgmt_registrations_lock);
3203
3204                 wdev->identifier = ++rdev->wdev_id;
3205                 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
3206                 rdev->devlist_generation++;
3207                 break;
3208         default:
3209                 break;
3210         }
3211
3212         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3213                                rdev, wdev, false) < 0) {
3214                 nlmsg_free(msg);
3215                 return -ENOBUFS;
3216         }
3217
3218         /*
3219          * For wdevs which have no associated netdev object (e.g. of type
3220          * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
3221          * For all other types, the event will be generated from the
3222          * netdev notifier
3223          */
3224         if (!wdev->netdev)
3225                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
3226
3227         return genlmsg_reply(msg, info);
3228 }
3229
3230 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3231 {
3232         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3233         struct wireless_dev *wdev = info->user_ptr[1];
3234
3235         if (!rdev->ops->del_virtual_intf)
3236                 return -EOPNOTSUPP;
3237
3238         /*
3239          * If we remove a wireless device without a netdev then clear
3240          * user_ptr[1] so that nl80211_post_doit won't dereference it
3241          * to check if it needs to do dev_put(). Otherwise it crashes
3242          * since the wdev has been freed, unlike with a netdev where
3243          * we need the dev_put() for the netdev to really be freed.
3244          */
3245         if (!wdev->netdev)
3246                 info->user_ptr[1] = NULL;
3247
3248         return rdev_del_virtual_intf(rdev, wdev);
3249 }
3250
3251 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3252 {
3253         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3254         struct net_device *dev = info->user_ptr[1];
3255         u16 noack_map;
3256
3257         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3258                 return -EINVAL;
3259
3260         if (!rdev->ops->set_noack_map)
3261                 return -EOPNOTSUPP;
3262
3263         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3264
3265         return rdev_set_noack_map(rdev, dev, noack_map);
3266 }
3267
3268 struct get_key_cookie {
3269         struct sk_buff *msg;
3270         int error;
3271         int idx;
3272 };
3273
3274 static void get_key_callback(void *c, struct key_params *params)
3275 {
3276         struct nlattr *key;
3277         struct get_key_cookie *cookie = c;
3278
3279         if ((params->key &&
3280              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3281                      params->key_len, params->key)) ||
3282             (params->seq &&
3283              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3284                      params->seq_len, params->seq)) ||
3285             (params->cipher &&
3286              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3287                          params->cipher)))
3288                 goto nla_put_failure;
3289
3290         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3291         if (!key)
3292                 goto nla_put_failure;
3293
3294         if ((params->key &&
3295              nla_put(cookie->msg, NL80211_KEY_DATA,
3296                      params->key_len, params->key)) ||
3297             (params->seq &&
3298              nla_put(cookie->msg, NL80211_KEY_SEQ,
3299                      params->seq_len, params->seq)) ||
3300             (params->cipher &&
3301              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3302                          params->cipher)))
3303                 goto nla_put_failure;
3304
3305         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
3306                 goto nla_put_failure;
3307
3308         nla_nest_end(cookie->msg, key);
3309
3310         return;
3311  nla_put_failure:
3312         cookie->error = 1;
3313 }
3314
3315 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3316 {
3317         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3318         int err;
3319         struct net_device *dev = info->user_ptr[1];
3320         u8 key_idx = 0;
3321         const u8 *mac_addr = NULL;
3322         bool pairwise;
3323         struct get_key_cookie cookie = {
3324                 .error = 0,
3325         };
3326         void *hdr;
3327         struct sk_buff *msg;
3328
3329         if (info->attrs[NL80211_ATTR_KEY_IDX])
3330                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3331
3332         if (key_idx > 5)
3333                 return -EINVAL;
3334
3335         if (info->attrs[NL80211_ATTR_MAC])
3336                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3337
3338         pairwise = !!mac_addr;
3339         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3340                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3341
3342                 if (kt >= NUM_NL80211_KEYTYPES)
3343                         return -EINVAL;
3344                 if (kt != NL80211_KEYTYPE_GROUP &&
3345                     kt != NL80211_KEYTYPE_PAIRWISE)
3346                         return -EINVAL;
3347                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3348         }
3349
3350         if (!rdev->ops->get_key)
3351                 return -EOPNOTSUPP;
3352
3353         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3354                 return -ENOENT;
3355
3356         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3357         if (!msg)
3358                 return -ENOMEM;
3359
3360         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3361                              NL80211_CMD_NEW_KEY);
3362         if (!hdr)
3363                 goto nla_put_failure;
3364
3365         cookie.msg = msg;
3366         cookie.idx = key_idx;
3367
3368         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3369             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3370                 goto nla_put_failure;
3371         if (mac_addr &&
3372             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3373                 goto nla_put_failure;
3374
3375         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3376                            get_key_callback);
3377
3378         if (err)
3379                 goto free_msg;
3380
3381         if (cookie.error)
3382                 goto nla_put_failure;
3383
3384         genlmsg_end(msg, hdr);
3385         return genlmsg_reply(msg, info);
3386
3387  nla_put_failure:
3388         err = -ENOBUFS;
3389  free_msg:
3390         nlmsg_free(msg);
3391         return err;
3392 }
3393
3394 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3395 {
3396         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3397         struct key_parse key;
3398         int err;
3399         struct net_device *dev = info->user_ptr[1];
3400
3401         err = nl80211_parse_key(info, &key);
3402         if (err)
3403                 return err;
3404
3405         if (key.idx < 0)
3406                 return -EINVAL;
3407
3408         /* only support setting default key */
3409         if (!key.def && !key.defmgmt)
3410                 return -EINVAL;
3411
3412         wdev_lock(dev->ieee80211_ptr);
3413
3414         if (key.def) {
3415                 if (!rdev->ops->set_default_key) {
3416                         err = -EOPNOTSUPP;
3417                         goto out;
3418                 }
3419
3420                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3421                 if (err)
3422                         goto out;
3423
3424                 err = rdev_set_default_key(rdev, dev, key.idx,
3425                                                  key.def_uni, key.def_multi);
3426
3427                 if (err)
3428                         goto out;
3429
3430 #ifdef CONFIG_CFG80211_WEXT
3431                 dev->ieee80211_ptr->wext.default_key = key.idx;
3432 #endif
3433         } else {
3434                 if (key.def_uni || !key.def_multi) {
3435                         err = -EINVAL;
3436                         goto out;
3437                 }
3438
3439                 if (!rdev->ops->set_default_mgmt_key) {
3440                         err = -EOPNOTSUPP;
3441                         goto out;
3442                 }
3443
3444                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3445                 if (err)
3446                         goto out;
3447
3448                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3449                 if (err)
3450                         goto out;
3451
3452 #ifdef CONFIG_CFG80211_WEXT
3453                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3454 #endif
3455         }
3456
3457  out:
3458         wdev_unlock(dev->ieee80211_ptr);
3459
3460         return err;
3461 }
3462
3463 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3464 {
3465         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3466         int err;
3467         struct net_device *dev = info->user_ptr[1];
3468         struct key_parse key;
3469         const u8 *mac_addr = NULL;
3470
3471         err = nl80211_parse_key(info, &key);
3472         if (err)
3473                 return err;
3474
3475         if (!key.p.key)
3476                 return -EINVAL;
3477
3478         if (info->attrs[NL80211_ATTR_MAC])
3479                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3480
3481         if (key.type == -1) {
3482                 if (mac_addr)
3483                         key.type = NL80211_KEYTYPE_PAIRWISE;
3484                 else
3485                         key.type = NL80211_KEYTYPE_GROUP;
3486         }
3487
3488         /* for now */
3489         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3490             key.type != NL80211_KEYTYPE_GROUP)
3491                 return -EINVAL;
3492
3493         if (!rdev->ops->add_key)
3494                 return -EOPNOTSUPP;
3495
3496         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3497                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3498                                            mac_addr))
3499                 return -EINVAL;
3500
3501         wdev_lock(dev->ieee80211_ptr);
3502         err = nl80211_key_allowed(dev->ieee80211_ptr);
3503         if (!err)
3504                 err = rdev_add_key(rdev, dev, key.idx,
3505                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3506                                     mac_addr, &key.p);
3507         wdev_unlock(dev->ieee80211_ptr);
3508
3509         return err;
3510 }
3511
3512 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3513 {
3514         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3515         int err;
3516         struct net_device *dev = info->user_ptr[1];
3517         u8 *mac_addr = NULL;
3518         struct key_parse key;
3519
3520         err = nl80211_parse_key(info, &key);
3521         if (err)
3522                 return err;
3523
3524         if (info->attrs[NL80211_ATTR_MAC])
3525                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3526
3527         if (key.type == -1) {
3528                 if (mac_addr)
3529                         key.type = NL80211_KEYTYPE_PAIRWISE;
3530                 else
3531                         key.type = NL80211_KEYTYPE_GROUP;
3532         }
3533
3534         /* for now */
3535         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3536             key.type != NL80211_KEYTYPE_GROUP)
3537                 return -EINVAL;
3538
3539         if (!rdev->ops->del_key)
3540                 return -EOPNOTSUPP;
3541
3542         wdev_lock(dev->ieee80211_ptr);
3543         err = nl80211_key_allowed(dev->ieee80211_ptr);
3544
3545         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3546             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3547                 err = -ENOENT;
3548
3549         if (!err)
3550                 err = rdev_del_key(rdev, dev, key.idx,
3551                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3552                                    mac_addr);
3553
3554 #ifdef CONFIG_CFG80211_WEXT
3555         if (!err) {
3556                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3557                         dev->ieee80211_ptr->wext.default_key = -1;
3558                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3559                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3560         }
3561 #endif
3562         wdev_unlock(dev->ieee80211_ptr);
3563
3564         return err;
3565 }
3566
3567 /* This function returns an error or the number of nested attributes */
3568 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3569 {
3570         struct nlattr *attr;
3571         int n_entries = 0, tmp;
3572
3573         nla_for_each_nested(attr, nl_attr, tmp) {
3574                 if (nla_len(attr) != ETH_ALEN)
3575                         return -EINVAL;
3576
3577                 n_entries++;
3578         }
3579
3580         return n_entries;
3581 }
3582
3583 /*
3584  * This function parses ACL information and allocates memory for ACL data.
3585  * On successful return, the calling function is responsible to free the
3586  * ACL buffer returned by this function.
3587  */
3588 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3589                                                 struct genl_info *info)
3590 {
3591         enum nl80211_acl_policy acl_policy;
3592         struct nlattr *attr;
3593         struct cfg80211_acl_data *acl;
3594         int i = 0, n_entries, tmp;
3595
3596         if (!wiphy->max_acl_mac_addrs)
3597                 return ERR_PTR(-EOPNOTSUPP);
3598
3599         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3600                 return ERR_PTR(-EINVAL);
3601
3602         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3603         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3604             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3605                 return ERR_PTR(-EINVAL);
3606
3607         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3608                 return ERR_PTR(-EINVAL);
3609
3610         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3611         if (n_entries < 0)
3612                 return ERR_PTR(n_entries);
3613
3614         if (n_entries > wiphy->max_acl_mac_addrs)
3615                 return ERR_PTR(-ENOTSUPP);
3616
3617         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3618                       GFP_KERNEL);
3619         if (!acl)
3620                 return ERR_PTR(-ENOMEM);
3621
3622         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3623                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3624                 i++;
3625         }
3626
3627         acl->n_acl_entries = n_entries;
3628         acl->acl_policy = acl_policy;
3629
3630         return acl;
3631 }
3632
3633 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3634 {
3635         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3636         struct net_device *dev = info->user_ptr[1];
3637         struct cfg80211_acl_data *acl;
3638         int err;
3639
3640         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3641             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3642                 return -EOPNOTSUPP;
3643
3644         if (!dev->ieee80211_ptr->beacon_interval)
3645                 return -EINVAL;
3646
3647         acl = parse_acl_data(&rdev->wiphy, info);
3648         if (IS_ERR(acl))
3649                 return PTR_ERR(acl);
3650
3651         err = rdev_set_mac_acl(rdev, dev, acl);
3652
3653         kfree(acl);
3654
3655         return err;
3656 }
3657
3658 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3659                            u8 *rates, u8 rates_len)
3660 {
3661         u8 i;
3662         u32 mask = 0;
3663
3664         for (i = 0; i < rates_len; i++) {
3665                 int rate = (rates[i] & 0x7f) * 5;
3666                 int ridx;
3667
3668                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3669                         struct ieee80211_rate *srate =
3670                                 &sband->bitrates[ridx];
3671                         if (rate == srate->bitrate) {
3672                                 mask |= 1 << ridx;
3673                                 break;
3674                         }
3675                 }
3676                 if (ridx == sband->n_bitrates)
3677                         return 0; /* rate not found */
3678         }
3679
3680         return mask;
3681 }
3682
3683 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3684                                u8 *rates, u8 rates_len,
3685                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3686 {
3687         u8 i;
3688
3689         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3690
3691         for (i = 0; i < rates_len; i++) {
3692                 int ridx, rbit;
3693
3694                 ridx = rates[i] / 8;
3695                 rbit = BIT(rates[i] % 8);
3696
3697                 /* check validity */
3698                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3699                         return false;
3700
3701                 /* check availability */
3702                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3703                         mcs[ridx] |= rbit;
3704                 else
3705                         return false;
3706         }
3707
3708         return true;
3709 }
3710
3711 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3712 {
3713         u16 mcs_mask = 0;
3714
3715         switch (vht_mcs_map) {
3716         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3717                 break;
3718         case IEEE80211_VHT_MCS_SUPPORT_0_7:
3719                 mcs_mask = 0x00FF;
3720                 break;
3721         case IEEE80211_VHT_MCS_SUPPORT_0_8:
3722                 mcs_mask = 0x01FF;
3723                 break;
3724         case IEEE80211_VHT_MCS_SUPPORT_0_9:
3725                 mcs_mask = 0x03FF;
3726                 break;
3727         default:
3728                 break;
3729         }
3730
3731         return mcs_mask;
3732 }
3733
3734 static void vht_build_mcs_mask(u16 vht_mcs_map,
3735                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3736 {
3737         u8 nss;
3738
3739         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3740                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3741                 vht_mcs_map >>= 2;
3742         }
3743 }
3744
3745 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3746                              struct nl80211_txrate_vht *txrate,
3747                              u16 mcs[NL80211_VHT_NSS_MAX])
3748 {
3749         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3750         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3751         u8 i;
3752
3753         if (!sband->vht_cap.vht_supported)
3754                 return false;
3755
3756         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3757
3758         /* Build vht_mcs_mask from VHT capabilities */
3759         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3760
3761         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3762                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3763                         mcs[i] = txrate->mcs[i];
3764                 else
3765                         return false;
3766         }
3767
3768         return true;
3769 }
3770
3771 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3772         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3773                                     .len = NL80211_MAX_SUPP_RATES },
3774         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3775                                 .len = NL80211_MAX_SUPP_HT_RATES },
3776         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3777         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
3778 };
3779
3780 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3781                                          struct cfg80211_bitrate_mask *mask)
3782 {
3783         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3784         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3785         int rem, i;
3786         struct nlattr *tx_rates;
3787         struct ieee80211_supported_band *sband;
3788         u16 vht_tx_mcs_map;
3789
3790         memset(mask, 0, sizeof(*mask));
3791         /* Default to all rates enabled */
3792         for (i = 0; i < NUM_NL80211_BANDS; i++) {
3793                 sband = rdev->wiphy.bands[i];
3794
3795                 if (!sband)
3796                         continue;
3797
3798                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3799                 memcpy(mask->control[i].ht_mcs,
3800                        sband->ht_cap.mcs.rx_mask,
3801                        sizeof(mask->control[i].ht_mcs));
3802
3803                 if (!sband->vht_cap.vht_supported)
3804                         continue;
3805
3806                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3807                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3808         }
3809
3810         /* if no rates are given set it back to the defaults */
3811         if (!info->attrs[NL80211_ATTR_TX_RATES])
3812                 goto out;
3813
3814         /* The nested attribute uses enum nl80211_band as the index. This maps
3815          * directly to the enum nl80211_band values used in cfg80211.
3816          */
3817         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3818         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3819                 enum nl80211_band band = nla_type(tx_rates);
3820                 int err;
3821
3822                 if (band < 0 || band >= NUM_NL80211_BANDS)
3823                         return -EINVAL;
3824                 sband = rdev->wiphy.bands[band];
3825                 if (sband == NULL)
3826                         return -EINVAL;
3827                 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3828                                        nl80211_txattr_policy, info->extack);
3829                 if (err)
3830                         return err;
3831                 if (tb[NL80211_TXRATE_LEGACY]) {
3832                         mask->control[band].legacy = rateset_to_mask(
3833                                 sband,
3834                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
3835                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
3836                         if ((mask->control[band].legacy == 0) &&
3837                             nla_len(tb[NL80211_TXRATE_LEGACY]))
3838                                 return -EINVAL;
3839                 }
3840                 if (tb[NL80211_TXRATE_HT]) {
3841                         if (!ht_rateset_to_mask(
3842                                         sband,
3843                                         nla_data(tb[NL80211_TXRATE_HT]),
3844                                         nla_len(tb[NL80211_TXRATE_HT]),
3845                                         mask->control[band].ht_mcs))
3846                                 return -EINVAL;
3847                 }
3848                 if (tb[NL80211_TXRATE_VHT]) {
3849                         if (!vht_set_mcs_mask(
3850                                         sband,
3851                                         nla_data(tb[NL80211_TXRATE_VHT]),
3852                                         mask->control[band].vht_mcs))
3853                                 return -EINVAL;
3854                 }
3855                 if (tb[NL80211_TXRATE_GI]) {
3856                         mask->control[band].gi =
3857                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
3858                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3859                                 return -EINVAL;
3860                 }
3861
3862                 if (mask->control[band].legacy == 0) {
3863                         /* don't allow empty legacy rates if HT or VHT
3864                          * are not even supported.
3865                          */
3866                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3867                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
3868                                 return -EINVAL;
3869
3870                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3871                                 if (mask->control[band].ht_mcs[i])
3872                                         goto out;
3873
3874                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3875                                 if (mask->control[band].vht_mcs[i])
3876                                         goto out;
3877
3878                         /* legacy and mcs rates may not be both empty */
3879                         return -EINVAL;
3880                 }
3881         }
3882
3883 out:
3884         return 0;
3885 }
3886
3887 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3888                                    enum nl80211_band band,
3889                                    struct cfg80211_bitrate_mask *beacon_rate)
3890 {
3891         u32 count_ht, count_vht, i;
3892         u32 rate = beacon_rate->control[band].legacy;
3893
3894         /* Allow only one rate */
3895         if (hweight32(rate) > 1)
3896                 return -EINVAL;
3897
3898         count_ht = 0;
3899         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3900                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3901                         return -EINVAL;
3902                 } else if (beacon_rate->control[band].ht_mcs[i]) {
3903                         count_ht++;
3904                         if (count_ht > 1)
3905                                 return -EINVAL;
3906                 }
3907                 if (count_ht && rate)
3908                         return -EINVAL;
3909         }
3910
3911         count_vht = 0;
3912         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3913                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
3914                         return -EINVAL;
3915                 } else if (beacon_rate->control[band].vht_mcs[i]) {
3916                         count_vht++;
3917                         if (count_vht > 1)
3918                                 return -EINVAL;
3919                 }
3920                 if (count_vht && rate)
3921                         return -EINVAL;
3922         }
3923
3924         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
3925                 return -EINVAL;
3926
3927         if (rate &&
3928             !wiphy_ext_feature_isset(&rdev->wiphy,
3929                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
3930                 return -EINVAL;
3931         if (count_ht &&
3932             !wiphy_ext_feature_isset(&rdev->wiphy,
3933                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
3934                 return -EINVAL;
3935         if (count_vht &&
3936             !wiphy_ext_feature_isset(&rdev->wiphy,
3937                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
3938                 return -EINVAL;
3939
3940         return 0;
3941 }
3942
3943 static int nl80211_parse_beacon(struct nlattr *attrs[],
3944                                 struct cfg80211_beacon_data *bcn)
3945 {
3946         bool haveinfo = false;
3947
3948         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3949             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3950             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3951             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3952                 return -EINVAL;
3953
3954         memset(bcn, 0, sizeof(*bcn));
3955
3956         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3957                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3958                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3959                 if (!bcn->head_len)
3960                         return -EINVAL;
3961                 haveinfo = true;
3962         }
3963
3964         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3965                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3966                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3967                 haveinfo = true;
3968         }
3969
3970         if (!haveinfo)
3971                 return -EINVAL;
3972
3973         if (attrs[NL80211_ATTR_IE]) {
3974                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3975                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3976         }
3977
3978         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3979                 bcn->proberesp_ies =
3980                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3981                 bcn->proberesp_ies_len =
3982                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3983         }
3984
3985         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3986                 bcn->assocresp_ies =
3987                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3988                 bcn->assocresp_ies_len =
3989                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3990         }
3991
3992         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3993                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3994                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3995         }
3996
3997         return 0;
3998 }
3999
4000 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4001                                             const u8 *rates)
4002 {
4003         int i;
4004
4005         if (!rates)
4006                 return;
4007
4008         for (i = 0; i < rates[1]; i++) {
4009                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4010                         params->ht_required = true;
4011                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4012                         params->vht_required = true;
4013         }
4014 }
4015
4016 /*
4017  * Since the nl80211 API didn't include, from the beginning, attributes about
4018  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4019  * benefit of drivers that rebuild IEs in the firmware.
4020  */
4021 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4022 {
4023         const struct cfg80211_beacon_data *bcn = &params->beacon;
4024         size_t ies_len = bcn->tail_len;
4025         const u8 *ies = bcn->tail;
4026         const u8 *rates;
4027         const u8 *cap;
4028
4029         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4030         nl80211_check_ap_rate_selectors(params, rates);
4031
4032         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4033         nl80211_check_ap_rate_selectors(params, rates);
4034
4035         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4036         if (cap && cap[1] >= sizeof(*params->ht_cap))
4037                 params->ht_cap = (void *)(cap + 2);
4038         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4039         if (cap && cap[1] >= sizeof(*params->vht_cap))
4040                 params->vht_cap = (void *)(cap + 2);
4041 }
4042
4043 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4044                                    struct cfg80211_ap_settings *params)
4045 {
4046         struct wireless_dev *wdev;
4047         bool ret = false;
4048
4049         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4050                 if (wdev->iftype != NL80211_IFTYPE_AP &&
4051                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
4052                         continue;
4053
4054                 if (!wdev->preset_chandef.chan)
4055                         continue;
4056
4057                 params->chandef = wdev->preset_chandef;
4058                 ret = true;
4059                 break;
4060         }
4061
4062         return ret;
4063 }
4064
4065 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4066                                     enum nl80211_auth_type auth_type,
4067                                     enum nl80211_commands cmd)
4068 {
4069         if (auth_type > NL80211_AUTHTYPE_MAX)
4070                 return false;
4071
4072         switch (cmd) {
4073         case NL80211_CMD_AUTHENTICATE:
4074                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4075                     auth_type == NL80211_AUTHTYPE_SAE)
4076                         return false;
4077                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4078                                              NL80211_EXT_FEATURE_FILS_STA) &&
4079                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4080                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4081                      auth_type == NL80211_AUTHTYPE_FILS_PK))
4082                         return false;
4083                 return true;
4084         case NL80211_CMD_CONNECT:
4085                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4086                     auth_type == NL80211_AUTHTYPE_SAE)
4087                         return false;
4088
4089                 /* FILS with SK PFS or PK not supported yet */
4090                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4091                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4092                         return false;
4093                 if (!wiphy_ext_feature_isset(
4094                             &rdev->wiphy,
4095                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4096                     auth_type == NL80211_AUTHTYPE_FILS_SK)
4097                         return false;
4098                 return true;
4099         case NL80211_CMD_START_AP:
4100                 /* SAE not supported yet */
4101                 if (auth_type == NL80211_AUTHTYPE_SAE)
4102                         return false;
4103                 /* FILS not supported yet */
4104                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4105                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4106                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4107                         return false;
4108                 return true;
4109         default:
4110                 return false;
4111         }
4112 }
4113
4114 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4115 {
4116         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4117         struct net_device *dev = info->user_ptr[1];
4118         struct wireless_dev *wdev = dev->ieee80211_ptr;
4119         struct cfg80211_ap_settings params;
4120         int err;
4121
4122         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4123             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4124                 return -EOPNOTSUPP;
4125
4126         if (!rdev->ops->start_ap)
4127                 return -EOPNOTSUPP;
4128
4129         if (wdev->beacon_interval)
4130                 return -EALREADY;
4131
4132         memset(&params, 0, sizeof(params));
4133
4134         /* these are required for START_AP */
4135         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4136             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4137             !info->attrs[NL80211_ATTR_BEACON_HEAD])
4138                 return -EINVAL;
4139
4140         err = nl80211_parse_beacon(info->attrs, &params.beacon);
4141         if (err)
4142                 return err;
4143
4144         params.beacon_interval =
4145                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4146         params.dtim_period =
4147                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4148
4149         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4150                                            params.beacon_interval);
4151         if (err)
4152                 return err;
4153
4154         /*
4155          * In theory, some of these attributes should be required here
4156          * but since they were not used when the command was originally
4157          * added, keep them optional for old user space programs to let
4158          * them continue to work with drivers that do not need the
4159          * additional information -- drivers must check!
4160          */
4161         if (info->attrs[NL80211_ATTR_SSID]) {
4162                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4163                 params.ssid_len =
4164                         nla_len(info->attrs[NL80211_ATTR_SSID]);
4165                 if (params.ssid_len == 0 ||
4166                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
4167                         return -EINVAL;
4168         }
4169
4170         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
4171                 params.hidden_ssid = nla_get_u32(
4172                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4173                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
4174                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
4175                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
4176                         return -EINVAL;
4177         }
4178
4179         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4180
4181         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4182                 params.auth_type = nla_get_u32(
4183                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
4184                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4185                                              NL80211_CMD_START_AP))
4186                         return -EINVAL;
4187         } else
4188                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4189
4190         err = nl80211_crypto_settings(rdev, info, &params.crypto,
4191                                       NL80211_MAX_NR_CIPHER_SUITES);
4192         if (err)
4193                 return err;
4194
4195         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4196                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4197                         return -EOPNOTSUPP;
4198                 params.inactivity_timeout = nla_get_u16(
4199                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4200         }
4201
4202         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4203                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4204                         return -EINVAL;
4205                 params.p2p_ctwindow =
4206                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4207                 if (params.p2p_ctwindow > 127)
4208                         return -EINVAL;
4209                 if (params.p2p_ctwindow != 0 &&
4210                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4211                         return -EINVAL;
4212         }
4213
4214         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4215                 u8 tmp;
4216
4217                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4218                         return -EINVAL;
4219                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4220                 if (tmp > 1)
4221                         return -EINVAL;
4222                 params.p2p_opp_ps = tmp;
4223                 if (params.p2p_opp_ps != 0 &&
4224                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4225                         return -EINVAL;
4226         }
4227
4228         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4229                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4230                 if (err)
4231                         return err;
4232         } else if (wdev->preset_chandef.chan) {
4233                 params.chandef = wdev->preset_chandef;
4234         } else if (!nl80211_get_ap_channel(rdev, &params))
4235                 return -EINVAL;
4236
4237         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4238                                            wdev->iftype))
4239                 return -EINVAL;
4240
4241         if (info->attrs[NL80211_ATTR_TX_RATES]) {
4242                 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4243                 if (err)
4244                         return err;
4245
4246                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4247                                               &params.beacon_rate);
4248                 if (err)
4249                         return err;
4250         }
4251
4252         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4253                 params.smps_mode =
4254                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4255                 switch (params.smps_mode) {
4256                 case NL80211_SMPS_OFF:
4257                         break;
4258                 case NL80211_SMPS_STATIC:
4259                         if (!(rdev->wiphy.features &
4260                               NL80211_FEATURE_STATIC_SMPS))
4261                                 return -EINVAL;
4262                         break;
4263                 case NL80211_SMPS_DYNAMIC:
4264                         if (!(rdev->wiphy.features &
4265                               NL80211_FEATURE_DYNAMIC_SMPS))
4266                                 return -EINVAL;
4267                         break;
4268                 default:
4269                         return -EINVAL;
4270                 }
4271         } else {
4272                 params.smps_mode = NL80211_SMPS_OFF;
4273         }
4274
4275         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4276         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4277                 return -EOPNOTSUPP;
4278
4279         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4280                 params.acl = parse_acl_data(&rdev->wiphy, info);
4281                 if (IS_ERR(params.acl))
4282                         return PTR_ERR(params.acl);
4283         }
4284
4285         nl80211_calculate_ap_params(&params);
4286
4287         wdev_lock(wdev);
4288         err = rdev_start_ap(rdev, dev, &params);
4289         if (!err) {
4290                 wdev->preset_chandef = params.chandef;
4291                 wdev->beacon_interval = params.beacon_interval;
4292                 wdev->chandef = params.chandef;
4293                 wdev->ssid_len = params.ssid_len;
4294                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4295
4296                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4297                         wdev->conn_owner_nlportid = info->snd_portid;
4298         }
4299         wdev_unlock(wdev);
4300
4301         kfree(params.acl);
4302
4303         return err;
4304 }
4305
4306 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4307 {
4308         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4309         struct net_device *dev = info->user_ptr[1];
4310         struct wireless_dev *wdev = dev->ieee80211_ptr;
4311         struct cfg80211_beacon_data params;
4312         int err;
4313
4314         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4315             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4316                 return -EOPNOTSUPP;
4317
4318         if (!rdev->ops->change_beacon)
4319                 return -EOPNOTSUPP;
4320
4321         if (!wdev->beacon_interval)
4322                 return -EINVAL;
4323
4324         err = nl80211_parse_beacon(info->attrs, &params);
4325         if (err)
4326                 return err;
4327
4328         wdev_lock(wdev);
4329         err = rdev_change_beacon(rdev, dev, &params);
4330         wdev_unlock(wdev);
4331
4332         return err;
4333 }
4334
4335 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4336 {
4337         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4338         struct net_device *dev = info->user_ptr[1];
4339
4340         return cfg80211_stop_ap(rdev, dev, false);
4341 }
4342
4343 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4344         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4345         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4346         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4347         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4348         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4349         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4350 };
4351
4352 static int parse_station_flags(struct genl_info *info,
4353                                enum nl80211_iftype iftype,
4354                                struct station_parameters *params)
4355 {
4356         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4357         struct nlattr *nla;
4358         int flag;
4359
4360         /*
4361          * Try parsing the new attribute first so userspace
4362          * can specify both for older kernels.
4363          */
4364         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4365         if (nla) {
4366                 struct nl80211_sta_flag_update *sta_flags;
4367
4368                 sta_flags = nla_data(nla);
4369                 params->sta_flags_mask = sta_flags->mask;
4370                 params->sta_flags_set = sta_flags->set;
4371                 params->sta_flags_set &= params->sta_flags_mask;
4372                 if ((params->sta_flags_mask |
4373                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4374                         return -EINVAL;
4375                 return 0;
4376         }
4377
4378         /* if present, parse the old attribute */
4379
4380         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4381         if (!nla)
4382                 return 0;
4383
4384         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, nla,
4385                              sta_flags_policy, info->extack))
4386                 return -EINVAL;
4387
4388         /*
4389          * Only allow certain flags for interface types so that
4390          * other attributes are silently ignored. Remember that
4391          * this is backward compatibility code with old userspace
4392          * and shouldn't be hit in other cases anyway.
4393          */
4394         switch (iftype) {
4395         case NL80211_IFTYPE_AP:
4396         case NL80211_IFTYPE_AP_VLAN:
4397         case NL80211_IFTYPE_P2P_GO:
4398                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4399                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4400                                          BIT(NL80211_STA_FLAG_WME) |
4401                                          BIT(NL80211_STA_FLAG_MFP);
4402                 break;
4403         case NL80211_IFTYPE_P2P_CLIENT:
4404         case NL80211_IFTYPE_STATION:
4405                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4406                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
4407                 break;
4408         case NL80211_IFTYPE_MESH_POINT:
4409                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4410                                          BIT(NL80211_STA_FLAG_MFP) |
4411                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
4412                 break;
4413         default:
4414                 return -EINVAL;
4415         }
4416
4417         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4418                 if (flags[flag]) {
4419                         params->sta_flags_set |= (1<<flag);
4420
4421                         /* no longer support new API additions in old API */
4422                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4423                                 return -EINVAL;
4424                 }
4425         }
4426
4427         return 0;
4428 }
4429
4430 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4431                                  int attr)
4432 {
4433         struct nlattr *rate;
4434         u32 bitrate;
4435         u16 bitrate_compat;
4436         enum nl80211_rate_info rate_flg;
4437
4438         rate = nla_nest_start(msg, attr);
4439         if (!rate)
4440                 return false;
4441
4442         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4443         bitrate = cfg80211_calculate_bitrate(info);
4444         /* report 16-bit bitrate only if we can */
4445         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4446         if (bitrate > 0 &&
4447             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4448                 return false;
4449         if (bitrate_compat > 0 &&
4450             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4451                 return false;
4452
4453         switch (info->bw) {
4454         case RATE_INFO_BW_5:
4455                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4456                 break;
4457         case RATE_INFO_BW_10:
4458                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4459                 break;
4460         default:
4461                 WARN_ON(1);
4462                 /* fall through */
4463         case RATE_INFO_BW_20:
4464                 rate_flg = 0;
4465                 break;
4466         case RATE_INFO_BW_40:
4467                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4468                 break;
4469         case RATE_INFO_BW_80:
4470                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4471                 break;
4472         case RATE_INFO_BW_160:
4473                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4474                 break;
4475         }
4476
4477         if (rate_flg && nla_put_flag(msg, rate_flg))
4478                 return false;
4479
4480         if (info->flags & RATE_INFO_FLAGS_MCS) {
4481                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4482                         return false;
4483                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4484                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4485                         return false;
4486         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4487                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4488                         return false;
4489                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4490                         return false;
4491                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4492                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4493                         return false;
4494         }
4495
4496         nla_nest_end(msg, rate);
4497         return true;
4498 }
4499
4500 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4501                                int id)
4502 {
4503         void *attr;
4504         int i = 0;
4505
4506         if (!mask)
4507                 return true;
4508
4509         attr = nla_nest_start(msg, id);
4510         if (!attr)
4511                 return false;
4512
4513         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4514                 if (!(mask & BIT(i)))
4515                         continue;
4516
4517                 if (nla_put_u8(msg, i, signal[i]))
4518                         return false;
4519         }
4520
4521         nla_nest_end(msg, attr);
4522
4523         return true;
4524 }
4525
4526 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4527                                 u32 seq, int flags,
4528                                 struct cfg80211_registered_device *rdev,
4529                                 struct net_device *dev,
4530                                 const u8 *mac_addr, struct station_info *sinfo)
4531 {
4532         void *hdr;
4533         struct nlattr *sinfoattr, *bss_param;
4534
4535         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4536         if (!hdr)
4537                 return -1;
4538
4539         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4540             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4541             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4542                 goto nla_put_failure;
4543
4544         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4545         if (!sinfoattr)
4546                 goto nla_put_failure;
4547
4548 #define PUT_SINFO(attr, memb, type) do {                                \
4549         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
4550         if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) &&      \
4551             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
4552                              sinfo->memb))                              \
4553                 goto nla_put_failure;                                   \
4554         } while (0)
4555 #define PUT_SINFO_U64(attr, memb) do {                                  \
4556         if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) &&      \
4557             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
4558                               sinfo->memb, NL80211_STA_INFO_PAD))       \
4559                 goto nla_put_failure;                                   \
4560         } while (0)
4561
4562         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4563         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4564
4565         if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
4566                              BIT(NL80211_STA_INFO_RX_BYTES64)) &&
4567             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4568                         (u32)sinfo->rx_bytes))
4569                 goto nla_put_failure;
4570
4571         if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
4572                              BIT(NL80211_STA_INFO_TX_BYTES64)) &&
4573             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4574                         (u32)sinfo->tx_bytes))
4575                 goto nla_put_failure;
4576
4577         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4578         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4579         PUT_SINFO(LLID, llid, u16);
4580         PUT_SINFO(PLID, plid, u16);
4581         PUT_SINFO(PLINK_STATE, plink_state, u8);
4582         PUT_SINFO_U64(RX_DURATION, rx_duration);
4583
4584         switch (rdev->wiphy.signal_type) {
4585         case CFG80211_SIGNAL_TYPE_MBM:
4586                 PUT_SINFO(SIGNAL, signal, u8);
4587                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4588                 break;
4589         default:
4590                 break;
4591         }
4592         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4593                 if (!nl80211_put_signal(msg, sinfo->chains,
4594                                         sinfo->chain_signal,
4595                                         NL80211_STA_INFO_CHAIN_SIGNAL))
4596                         goto nla_put_failure;
4597         }
4598         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4599                 if (!nl80211_put_signal(msg, sinfo->chains,
4600                                         sinfo->chain_signal_avg,
4601                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4602                         goto nla_put_failure;
4603         }
4604         if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
4605                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4606                                           NL80211_STA_INFO_TX_BITRATE))
4607                         goto nla_put_failure;
4608         }
4609         if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
4610                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4611                                           NL80211_STA_INFO_RX_BITRATE))
4612                         goto nla_put_failure;
4613         }
4614
4615         PUT_SINFO(RX_PACKETS, rx_packets, u32);
4616         PUT_SINFO(TX_PACKETS, tx_packets, u32);
4617         PUT_SINFO(TX_RETRIES, tx_retries, u32);
4618         PUT_SINFO(TX_FAILED, tx_failed, u32);
4619         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4620         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4621         PUT_SINFO(LOCAL_PM, local_pm, u32);
4622         PUT_SINFO(PEER_PM, peer_pm, u32);
4623         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4624
4625         if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
4626                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4627                 if (!bss_param)
4628                         goto nla_put_failure;
4629
4630                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4631                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4632                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4633                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4634                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4635                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4636                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4637                                sinfo->bss_param.dtim_period) ||
4638                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4639                                 sinfo->bss_param.beacon_interval))
4640                         goto nla_put_failure;
4641
4642                 nla_nest_end(msg, bss_param);
4643         }
4644         if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
4645             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4646                     sizeof(struct nl80211_sta_flag_update),
4647                     &sinfo->sta_flags))
4648                 goto nla_put_failure;
4649
4650         PUT_SINFO_U64(T_OFFSET, t_offset);
4651         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4652         PUT_SINFO_U64(BEACON_RX, rx_beacon);
4653         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4654         PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
4655         if (wiphy_ext_feature_isset(&rdev->wiphy,
4656                                     NL80211_EXT_FEATURE_DATA_ACK_SIGNAL_SUPPORT))
4657                 PUT_SINFO(DATA_ACK_SIGNAL_AVG, avg_ack_signal, s8);
4658
4659 #undef PUT_SINFO
4660 #undef PUT_SINFO_U64
4661
4662         if (sinfo->pertid) {
4663                 struct nlattr *tidsattr;
4664                 int tid;
4665
4666                 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4667                 if (!tidsattr)
4668                         goto nla_put_failure;
4669
4670                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4671                         struct cfg80211_tid_stats *tidstats;
4672                         struct nlattr *tidattr;
4673
4674                         tidstats = &sinfo->pertid[tid];
4675
4676                         if (!tidstats->filled)
4677                                 continue;
4678
4679                         tidattr = nla_nest_start(msg, tid + 1);
4680                         if (!tidattr)
4681                                 goto nla_put_failure;
4682
4683 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
4684         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
4685             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
4686                               tidstats->memb, NL80211_TID_STATS_PAD))   \
4687                 goto nla_put_failure;                                   \
4688         } while (0)
4689
4690                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4691                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4692                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4693                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4694
4695 #undef PUT_TIDVAL_U64
4696                         if ((tidstats->filled &
4697                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
4698                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
4699                                                    NL80211_TID_STATS_TXQ_STATS))
4700                                 goto nla_put_failure;
4701
4702                         nla_nest_end(msg, tidattr);
4703                 }
4704
4705                 nla_nest_end(msg, tidsattr);
4706         }
4707
4708         nla_nest_end(msg, sinfoattr);
4709
4710         if (sinfo->assoc_req_ies_len &&
4711             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4712                     sinfo->assoc_req_ies))
4713                 goto nla_put_failure;
4714
4715         cfg80211_sinfo_release_content(sinfo);
4716         genlmsg_end(msg, hdr);
4717         return 0;
4718
4719  nla_put_failure:
4720         cfg80211_sinfo_release_content(sinfo);
4721         genlmsg_cancel(msg, hdr);
4722         return -EMSGSIZE;
4723 }
4724
4725 static int nl80211_dump_station(struct sk_buff *skb,
4726                                 struct netlink_callback *cb)
4727 {
4728         struct station_info sinfo;
4729         struct cfg80211_registered_device *rdev;
4730         struct wireless_dev *wdev;
4731         u8 mac_addr[ETH_ALEN];
4732         int sta_idx = cb->args[2];
4733         int err;
4734
4735         rtnl_lock();
4736         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4737         if (err)
4738                 goto out_err;
4739
4740         if (!wdev->netdev) {
4741                 err = -EINVAL;
4742                 goto out_err;
4743         }
4744
4745         if (!rdev->ops->dump_station) {
4746                 err = -EOPNOTSUPP;
4747                 goto out_err;
4748         }
4749
4750         while (1) {
4751                 memset(&sinfo, 0, sizeof(sinfo));
4752                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4753                                         mac_addr, &sinfo);
4754                 if (err == -ENOENT)
4755                         break;
4756                 if (err)
4757                         goto out_err;
4758
4759                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4760                                 NETLINK_CB(cb->skb).portid,
4761                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4762                                 rdev, wdev->netdev, mac_addr,
4763                                 &sinfo) < 0)
4764                         goto out;
4765
4766                 sta_idx++;
4767         }
4768
4769  out:
4770         cb->args[2] = sta_idx;
4771         err = skb->len;
4772  out_err:
4773         rtnl_unlock();
4774
4775         return err;
4776 }
4777
4778 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4779 {
4780         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4781         struct net_device *dev = info->user_ptr[1];
4782         struct station_info sinfo;
4783         struct sk_buff *msg;
4784         u8 *mac_addr = NULL;
4785         int err;
4786
4787         memset(&sinfo, 0, sizeof(sinfo));
4788
4789         if (!info->attrs[NL80211_ATTR_MAC])
4790                 return -EINVAL;
4791
4792         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4793
4794         if (!rdev->ops->get_station)
4795                 return -EOPNOTSUPP;
4796
4797         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4798         if (err)
4799                 return err;
4800
4801         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4802         if (!msg) {
4803                 cfg80211_sinfo_release_content(&sinfo);
4804                 return -ENOMEM;
4805         }
4806
4807         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4808                                  info->snd_portid, info->snd_seq, 0,
4809                                  rdev, dev, mac_addr, &sinfo) < 0) {
4810                 nlmsg_free(msg);
4811                 return -ENOBUFS;
4812         }
4813
4814         return genlmsg_reply(msg, info);
4815 }
4816
4817 int cfg80211_check_station_change(struct wiphy *wiphy,
4818                                   struct station_parameters *params,
4819                                   enum cfg80211_station_type statype)
4820 {
4821         if (params->listen_interval != -1 &&
4822             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4823                 return -EINVAL;
4824
4825         if (params->support_p2p_ps != -1 &&
4826             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4827                 return -EINVAL;
4828
4829         if (params->aid &&
4830             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4831             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4832                 return -EINVAL;
4833
4834         /* When you run into this, adjust the code below for the new flag */
4835         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4836
4837         switch (statype) {
4838         case CFG80211_STA_MESH_PEER_KERNEL:
4839         case CFG80211_STA_MESH_PEER_USER:
4840                 /*
4841                  * No ignoring the TDLS flag here -- the userspace mesh
4842                  * code doesn't have the bug of including TDLS in the
4843                  * mask everywhere.
4844                  */
4845                 if (params->sta_flags_mask &
4846                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4847                                   BIT(NL80211_STA_FLAG_MFP) |
4848                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
4849                         return -EINVAL;
4850                 break;
4851         case CFG80211_STA_TDLS_PEER_SETUP:
4852         case CFG80211_STA_TDLS_PEER_ACTIVE:
4853                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4854                         return -EINVAL;
4855                 /* ignore since it can't change */
4856                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4857                 break;
4858         default:
4859                 /* disallow mesh-specific things */
4860                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4861                         return -EINVAL;
4862                 if (params->local_pm)
4863                         return -EINVAL;
4864                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4865                         return -EINVAL;
4866         }
4867
4868         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4869             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4870                 /* TDLS can't be set, ... */
4871                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4872                         return -EINVAL;
4873                 /*
4874                  * ... but don't bother the driver with it. This works around
4875                  * a hostapd/wpa_supplicant issue -- it always includes the
4876                  * TLDS_PEER flag in the mask even for AP mode.
4877                  */
4878                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4879         }
4880
4881         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4882             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4883                 /* reject other things that can't change */
4884                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4885                         return -EINVAL;
4886                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4887                         return -EINVAL;
4888                 if (params->supported_rates)
4889                         return -EINVAL;
4890                 if (params->ext_capab || params->ht_capa || params->vht_capa)
4891                         return -EINVAL;
4892         }
4893
4894         if (statype != CFG80211_STA_AP_CLIENT &&
4895             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4896                 if (params->vlan)
4897                         return -EINVAL;
4898         }
4899
4900         switch (statype) {
4901         case CFG80211_STA_AP_MLME_CLIENT:
4902                 /* Use this only for authorizing/unauthorizing a station */
4903                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4904                         return -EOPNOTSUPP;
4905                 break;
4906         case CFG80211_STA_AP_CLIENT:
4907         case CFG80211_STA_AP_CLIENT_UNASSOC:
4908                 /* accept only the listed bits */
4909                 if (params->sta_flags_mask &
4910                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4911                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4912                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
4913                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4914                                   BIT(NL80211_STA_FLAG_WME) |
4915                                   BIT(NL80211_STA_FLAG_MFP)))
4916                         return -EINVAL;
4917
4918                 /* but authenticated/associated only if driver handles it */
4919                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4920                     params->sta_flags_mask &
4921                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4922                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4923                         return -EINVAL;
4924                 break;
4925         case CFG80211_STA_IBSS:
4926         case CFG80211_STA_AP_STA:
4927                 /* reject any changes other than AUTHORIZED */
4928                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4929                         return -EINVAL;
4930                 break;
4931         case CFG80211_STA_TDLS_PEER_SETUP:
4932                 /* reject any changes other than AUTHORIZED or WME */
4933                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4934                                                BIT(NL80211_STA_FLAG_WME)))
4935                         return -EINVAL;
4936                 /* force (at least) rates when authorizing */
4937                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4938                     !params->supported_rates)
4939                         return -EINVAL;
4940                 break;
4941         case CFG80211_STA_TDLS_PEER_ACTIVE:
4942                 /* reject any changes */
4943                 return -EINVAL;
4944         case CFG80211_STA_MESH_PEER_KERNEL:
4945                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4946                         return -EINVAL;
4947                 break;
4948         case CFG80211_STA_MESH_PEER_USER:
4949                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4950                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4951                         return -EINVAL;
4952                 break;
4953         }
4954
4955         /*
4956          * Older kernel versions ignored this attribute entirely, so don't
4957          * reject attempts to update it but mark it as unused instead so the
4958          * driver won't look at the data.
4959          */
4960         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
4961             statype != CFG80211_STA_TDLS_PEER_SETUP)
4962                 params->opmode_notif_used = false;
4963
4964         return 0;
4965 }
4966 EXPORT_SYMBOL(cfg80211_check_station_change);
4967
4968 /*
4969  * Get vlan interface making sure it is running and on the right wiphy.
4970  */
4971 static struct net_device *get_vlan(struct genl_info *info,
4972                                    struct cfg80211_registered_device *rdev)
4973 {
4974         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4975         struct net_device *v;
4976         int ret;
4977
4978         if (!vlanattr)
4979                 return NULL;
4980
4981         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4982         if (!v)
4983                 return ERR_PTR(-ENODEV);
4984
4985         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4986                 ret = -EINVAL;
4987                 goto error;
4988         }
4989
4990         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4991             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4992             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4993                 ret = -EINVAL;
4994                 goto error;
4995         }
4996
4997         if (!netif_running(v)) {
4998                 ret = -ENETDOWN;
4999                 goto error;
5000         }
5001
5002         return v;
5003  error:
5004         dev_put(v);
5005         return ERR_PTR(ret);
5006 }
5007
5008 static const struct nla_policy
5009 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5010         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5011         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5012 };
5013
5014 static int nl80211_parse_sta_wme(struct genl_info *info,
5015                                  struct station_parameters *params)
5016 {
5017         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5018         struct nlattr *nla;
5019         int err;
5020
5021         /* parse WME attributes if present */
5022         if (!info->attrs[NL80211_ATTR_STA_WME])
5023                 return 0;
5024
5025         nla = info->attrs[NL80211_ATTR_STA_WME];
5026         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
5027                                nl80211_sta_wme_policy, info->extack);
5028         if (err)
5029                 return err;
5030
5031         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5032                 params->uapsd_queues = nla_get_u8(
5033                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
5034         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5035                 return -EINVAL;
5036
5037         if (tb[NL80211_STA_WME_MAX_SP])
5038                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5039
5040         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5041                 return -EINVAL;
5042
5043         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5044
5045         return 0;
5046 }
5047
5048 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5049                                       struct station_parameters *params)
5050 {
5051         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5052                 params->supported_channels =
5053                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5054                 params->supported_channels_len =
5055                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5056                 /*
5057                  * Need to include at least one (first channel, number of
5058                  * channels) tuple for each subband, and must have proper
5059                  * tuples for the rest of the data as well.
5060                  */
5061                 if (params->supported_channels_len < 2)
5062                         return -EINVAL;
5063                 if (params->supported_channels_len % 2)
5064                         return -EINVAL;
5065         }
5066
5067         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5068                 params->supported_oper_classes =
5069                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5070                 params->supported_oper_classes_len =
5071                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5072                 /*
5073                  * The value of the Length field of the Supported Operating
5074                  * Classes element is between 2 and 253.
5075                  */
5076                 if (params->supported_oper_classes_len < 2 ||
5077                     params->supported_oper_classes_len > 253)
5078                         return -EINVAL;
5079         }
5080         return 0;
5081 }
5082
5083 static int nl80211_set_station_tdls(struct genl_info *info,
5084                                     struct station_parameters *params)
5085 {
5086         int err;
5087         /* Dummy STA entry gets updated once the peer capabilities are known */
5088         if (info->attrs[NL80211_ATTR_PEER_AID])
5089                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5090         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5091                 params->ht_capa =
5092                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5093         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5094                 params->vht_capa =
5095                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5096
5097         err = nl80211_parse_sta_channel_info(info, params);
5098         if (err)
5099                 return err;
5100
5101         return nl80211_parse_sta_wme(info, params);
5102 }
5103
5104 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5105 {
5106         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5107         struct net_device *dev = info->user_ptr[1];
5108         struct station_parameters params;
5109         u8 *mac_addr;
5110         int err;
5111
5112         memset(&params, 0, sizeof(params));
5113
5114         if (!rdev->ops->change_station)
5115                 return -EOPNOTSUPP;
5116
5117         /*
5118          * AID and listen_interval properties can be set only for unassociated
5119          * station. Include these parameters here and will check them in
5120          * cfg80211_check_station_change().
5121          */
5122         if (info->attrs[NL80211_ATTR_STA_AID])
5123                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5124
5125         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5126                 params.listen_interval =
5127                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5128         else
5129                 params.listen_interval = -1;
5130
5131         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5132                 u8 tmp;
5133
5134                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5135                 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
5136                         return -EINVAL;
5137
5138                 params.support_p2p_ps = tmp;
5139         } else {
5140                 params.support_p2p_ps = -1;
5141         }
5142
5143         if (!info->attrs[NL80211_ATTR_MAC])
5144                 return -EINVAL;
5145
5146         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5147
5148         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5149                 params.supported_rates =
5150                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5151                 params.supported_rates_len =
5152                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5153         }
5154
5155         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5156                 params.capability =
5157                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5158                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5159         }
5160
5161         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5162                 params.ext_capab =
5163                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5164                 params.ext_capab_len =
5165                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5166         }
5167
5168         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5169                 return -EINVAL;
5170
5171         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5172                 params.plink_action =
5173                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5174                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5175                         return -EINVAL;
5176         }
5177
5178         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5179                 params.plink_state =
5180                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5181                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
5182                         return -EINVAL;
5183                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
5184                         params.peer_aid = nla_get_u16(
5185                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5186                         if (params.peer_aid > IEEE80211_MAX_AID)
5187                                 return -EINVAL;
5188                 }
5189                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5190         }
5191
5192         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
5193                 enum nl80211_mesh_power_mode pm = nla_get_u32(
5194                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5195
5196                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
5197                     pm > NL80211_MESH_POWER_MAX)
5198                         return -EINVAL;
5199
5200                 params.local_pm = pm;
5201         }
5202
5203         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5204                 params.opmode_notif_used = true;
5205                 params.opmode_notif =
5206                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5207         }
5208
5209         /* Include parameters for TDLS peer (will check later) */
5210         err = nl80211_set_station_tdls(info, &params);
5211         if (err)
5212                 return err;
5213
5214         params.vlan = get_vlan(info, rdev);
5215         if (IS_ERR(params.vlan))
5216                 return PTR_ERR(params.vlan);
5217
5218         switch (dev->ieee80211_ptr->iftype) {
5219         case NL80211_IFTYPE_AP:
5220         case NL80211_IFTYPE_AP_VLAN:
5221         case NL80211_IFTYPE_P2P_GO:
5222         case NL80211_IFTYPE_P2P_CLIENT:
5223         case NL80211_IFTYPE_STATION:
5224         case NL80211_IFTYPE_ADHOC:
5225         case NL80211_IFTYPE_MESH_POINT:
5226                 break;
5227         default:
5228                 err = -EOPNOTSUPP;
5229                 goto out_put_vlan;
5230         }
5231
5232         /* driver will call cfg80211_check_station_change() */
5233         err = rdev_change_station(rdev, dev, mac_addr, &params);
5234
5235  out_put_vlan:
5236         if (params.vlan)
5237                 dev_put(params.vlan);
5238
5239         return err;
5240 }
5241
5242 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5243 {
5244         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5245         int err;
5246         struct net_device *dev = info->user_ptr[1];
5247         struct station_parameters params;
5248         u8 *mac_addr = NULL;
5249         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5250                          BIT(NL80211_STA_FLAG_ASSOCIATED);
5251
5252         memset(&params, 0, sizeof(params));
5253
5254         if (!rdev->ops->add_station)
5255                 return -EOPNOTSUPP;
5256
5257         if (!info->attrs[NL80211_ATTR_MAC])
5258                 return -EINVAL;
5259
5260         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5261                 return -EINVAL;
5262
5263         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5264                 return -EINVAL;
5265
5266         if (!info->attrs[NL80211_ATTR_STA_AID] &&
5267             !info->attrs[NL80211_ATTR_PEER_AID])
5268                 return -EINVAL;
5269
5270         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5271         params.supported_rates =
5272                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5273         params.supported_rates_len =
5274                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5275         params.listen_interval =
5276                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5277
5278         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5279                 u8 tmp;
5280
5281                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5282                 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
5283                         return -EINVAL;
5284
5285                 params.support_p2p_ps = tmp;
5286         } else {
5287                 /*
5288                  * if not specified, assume it's supported for P2P GO interface,
5289                  * and is NOT supported for AP interface
5290                  */
5291                 params.support_p2p_ps =
5292                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5293         }
5294
5295         if (info->attrs[NL80211_ATTR_PEER_AID])
5296                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5297         else
5298                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5299         if (!params.aid || params.aid > IEEE80211_MAX_AID)
5300                 return -EINVAL;
5301
5302         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5303                 params.capability =
5304                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5305                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5306         }
5307
5308         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5309                 params.ext_capab =
5310                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5311                 params.ext_capab_len =
5312                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5313         }
5314
5315         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5316                 params.ht_capa =
5317                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5318
5319         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5320                 params.vht_capa =
5321                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5322
5323         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5324                 params.opmode_notif_used = true;
5325                 params.opmode_notif =
5326                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5327         }
5328
5329         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5330                 params.plink_action =
5331                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5332                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5333                         return -EINVAL;
5334         }
5335
5336         err = nl80211_parse_sta_channel_info(info, &params);
5337         if (err)
5338                 return err;
5339
5340         err = nl80211_parse_sta_wme(info, &params);
5341         if (err)
5342                 return err;
5343
5344         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5345                 return -EINVAL;
5346
5347         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5348          * as userspace might just pass through the capabilities from the IEs
5349          * directly, rather than enforcing this restriction and returning an
5350          * error in this case.
5351          */
5352         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5353                 params.ht_capa = NULL;
5354                 params.vht_capa = NULL;
5355         }
5356
5357         /* When you run into this, adjust the code below for the new flag */
5358         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5359
5360         switch (dev->ieee80211_ptr->iftype) {
5361         case NL80211_IFTYPE_AP:
5362         case NL80211_IFTYPE_AP_VLAN:
5363         case NL80211_IFTYPE_P2P_GO:
5364                 /* ignore WME attributes if iface/sta is not capable */
5365                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5366                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5367                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5368
5369                 /* TDLS peers cannot be added */
5370                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5371                     info->attrs[NL80211_ATTR_PEER_AID])
5372                         return -EINVAL;
5373                 /* but don't bother the driver with it */
5374                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5375
5376                 /* allow authenticated/associated only if driver handles it */
5377                 if (!(rdev->wiphy.features &
5378                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5379                     params.sta_flags_mask & auth_assoc)
5380                         return -EINVAL;
5381
5382                 /* Older userspace, or userspace wanting to be compatible with
5383                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5384                  * and assoc flags in the mask, but assumes the station will be
5385                  * added as associated anyway since this was the required driver
5386                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5387                  * introduced.
5388                  * In order to not bother drivers with this quirk in the API
5389                  * set the flags in both the mask and set for new stations in
5390                  * this case.
5391                  */
5392                 if (!(params.sta_flags_mask & auth_assoc)) {
5393                         params.sta_flags_mask |= auth_assoc;
5394                         params.sta_flags_set |= auth_assoc;
5395                 }
5396
5397                 /* must be last in here for error handling */
5398                 params.vlan = get_vlan(info, rdev);
5399                 if (IS_ERR(params.vlan))
5400                         return PTR_ERR(params.vlan);
5401                 break;
5402         case NL80211_IFTYPE_MESH_POINT:
5403                 /* ignore uAPSD data */
5404                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5405
5406                 /* associated is disallowed */
5407                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5408                         return -EINVAL;
5409                 /* TDLS peers cannot be added */
5410                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5411                     info->attrs[NL80211_ATTR_PEER_AID])
5412                         return -EINVAL;
5413                 break;
5414         case NL80211_IFTYPE_STATION:
5415         case NL80211_IFTYPE_P2P_CLIENT:
5416                 /* ignore uAPSD data */
5417                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5418
5419                 /* these are disallowed */
5420                 if (params.sta_flags_mask &
5421                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5422                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5423                         return -EINVAL;
5424                 /* Only TDLS peers can be added */
5425                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5426                         return -EINVAL;
5427                 /* Can only add if TDLS ... */
5428                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5429                         return -EOPNOTSUPP;
5430                 /* ... with external setup is supported */
5431                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5432                         return -EOPNOTSUPP;
5433                 /*
5434                  * Older wpa_supplicant versions always mark the TDLS peer
5435                  * as authorized, but it shouldn't yet be.
5436                  */
5437                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5438                 break;
5439         default:
5440                 return -EOPNOTSUPP;
5441         }
5442
5443         /* be aware of params.vlan when changing code here */
5444
5445         err = rdev_add_station(rdev, dev, mac_addr, &params);
5446
5447         if (params.vlan)
5448                 dev_put(params.vlan);
5449         return err;
5450 }
5451
5452 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5453 {
5454         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5455         struct net_device *dev = info->user_ptr[1];
5456         struct station_del_parameters params;
5457
5458         memset(&params, 0, sizeof(params));
5459
5460         if (info->attrs[NL80211_ATTR_MAC])
5461                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5462
5463         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5464             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5465             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5466             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5467                 return -EINVAL;
5468
5469         if (!rdev->ops->del_station)
5470                 return -EOPNOTSUPP;
5471
5472         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5473                 params.subtype =
5474                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5475                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5476                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5477                         return -EINVAL;
5478         } else {
5479                 /* Default to Deauthentication frame */
5480                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5481         }
5482
5483         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5484                 params.reason_code =
5485                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5486                 if (params.reason_code == 0)
5487                         return -EINVAL; /* 0 is reserved */
5488         } else {
5489                 /* Default to reason code 2 */
5490                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5491         }
5492
5493         return rdev_del_station(rdev, dev, &params);
5494 }
5495
5496 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5497                                 int flags, struct net_device *dev,
5498                                 u8 *dst, u8 *next_hop,
5499                                 struct mpath_info *pinfo)
5500 {
5501         void *hdr;
5502         struct nlattr *pinfoattr;
5503
5504         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5505         if (!hdr)
5506                 return -1;
5507
5508         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5509             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5510             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5511             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5512                 goto nla_put_failure;
5513
5514         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5515         if (!pinfoattr)
5516                 goto nla_put_failure;
5517         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5518             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5519                         pinfo->frame_qlen))
5520                 goto nla_put_failure;
5521         if (((pinfo->filled & MPATH_INFO_SN) &&
5522              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5523             ((pinfo->filled & MPATH_INFO_METRIC) &&
5524              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5525                          pinfo->metric)) ||
5526             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5527              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5528                          pinfo->exptime)) ||
5529             ((pinfo->filled & MPATH_INFO_FLAGS) &&
5530              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5531                         pinfo->flags)) ||
5532             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5533              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5534                          pinfo->discovery_timeout)) ||
5535             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5536              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5537                         pinfo->discovery_retries)))
5538                 goto nla_put_failure;
5539
5540         nla_nest_end(msg, pinfoattr);
5541
5542         genlmsg_end(msg, hdr);
5543         return 0;
5544
5545  nla_put_failure:
5546         genlmsg_cancel(msg, hdr);
5547         return -EMSGSIZE;
5548 }
5549
5550 static int nl80211_dump_mpath(struct sk_buff *skb,
5551                               struct netlink_callback *cb)
5552 {
5553         struct mpath_info pinfo;
5554         struct cfg80211_registered_device *rdev;
5555         struct wireless_dev *wdev;
5556         u8 dst[ETH_ALEN];
5557         u8 next_hop[ETH_ALEN];
5558         int path_idx = cb->args[2];
5559         int err;
5560
5561         rtnl_lock();
5562         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5563         if (err)
5564                 goto out_err;
5565
5566         if (!rdev->ops->dump_mpath) {
5567                 err = -EOPNOTSUPP;
5568                 goto out_err;
5569         }
5570
5571         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5572                 err = -EOPNOTSUPP;
5573                 goto out_err;
5574         }
5575
5576         while (1) {
5577                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5578                                       next_hop, &pinfo);
5579                 if (err == -ENOENT)
5580                         break;
5581                 if (err)
5582                         goto out_err;
5583
5584                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5585                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
5586                                        wdev->netdev, dst, next_hop,
5587                                        &pinfo) < 0)
5588                         goto out;
5589
5590                 path_idx++;
5591         }
5592
5593  out:
5594         cb->args[2] = path_idx;
5595         err = skb->len;
5596  out_err:
5597         rtnl_unlock();
5598         return err;
5599 }
5600
5601 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5602 {
5603         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5604         int err;
5605         struct net_device *dev = info->user_ptr[1];
5606         struct mpath_info pinfo;
5607         struct sk_buff *msg;
5608         u8 *dst = NULL;
5609         u8 next_hop[ETH_ALEN];
5610
5611         memset(&pinfo, 0, sizeof(pinfo));
5612
5613         if (!info->attrs[NL80211_ATTR_MAC])
5614                 return -EINVAL;
5615
5616         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5617
5618         if (!rdev->ops->get_mpath)
5619                 return -EOPNOTSUPP;
5620
5621         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5622                 return -EOPNOTSUPP;
5623
5624         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5625         if (err)
5626                 return err;
5627
5628         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5629         if (!msg)
5630                 return -ENOMEM;
5631
5632         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5633                                  dev, dst, next_hop, &pinfo) < 0) {
5634                 nlmsg_free(msg);
5635                 return -ENOBUFS;
5636         }
5637
5638         return genlmsg_reply(msg, info);
5639 }
5640
5641 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5642 {
5643         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5644         struct net_device *dev = info->user_ptr[1];
5645         u8 *dst = NULL;
5646         u8 *next_hop = NULL;
5647
5648         if (!info->attrs[NL80211_ATTR_MAC])
5649                 return -EINVAL;
5650
5651         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5652                 return -EINVAL;
5653
5654         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5655         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5656
5657         if (!rdev->ops->change_mpath)
5658                 return -EOPNOTSUPP;
5659
5660         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5661                 return -EOPNOTSUPP;
5662
5663         return rdev_change_mpath(rdev, dev, dst, next_hop);
5664 }
5665
5666 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5667 {
5668         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5669         struct net_device *dev = info->user_ptr[1];
5670         u8 *dst = NULL;
5671         u8 *next_hop = NULL;
5672
5673         if (!info->attrs[NL80211_ATTR_MAC])
5674                 return -EINVAL;
5675
5676         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5677                 return -EINVAL;
5678
5679         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5680         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5681
5682         if (!rdev->ops->add_mpath)
5683                 return -EOPNOTSUPP;
5684
5685         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5686                 return -EOPNOTSUPP;
5687
5688         return rdev_add_mpath(rdev, dev, dst, next_hop);
5689 }
5690
5691 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5692 {
5693         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5694         struct net_device *dev = info->user_ptr[1];
5695         u8 *dst = NULL;
5696
5697         if (info->attrs[NL80211_ATTR_MAC])
5698                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5699
5700         if (!rdev->ops->del_mpath)
5701                 return -EOPNOTSUPP;
5702
5703         return rdev_del_mpath(rdev, dev, dst);
5704 }
5705
5706 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5707 {
5708         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5709         int err;
5710         struct net_device *dev = info->user_ptr[1];
5711         struct mpath_info pinfo;
5712         struct sk_buff *msg;
5713         u8 *dst = NULL;
5714         u8 mpp[ETH_ALEN];
5715
5716         memset(&pinfo, 0, sizeof(pinfo));
5717
5718         if (!info->attrs[NL80211_ATTR_MAC])
5719                 return -EINVAL;
5720
5721         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5722
5723         if (!rdev->ops->get_mpp)
5724                 return -EOPNOTSUPP;
5725
5726         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5727                 return -EOPNOTSUPP;
5728
5729         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5730         if (err)
5731                 return err;
5732
5733         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5734         if (!msg)
5735                 return -ENOMEM;
5736
5737         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5738                                dev, dst, mpp, &pinfo) < 0) {
5739                 nlmsg_free(msg);
5740                 return -ENOBUFS;
5741         }
5742
5743         return genlmsg_reply(msg, info);
5744 }
5745
5746 static int nl80211_dump_mpp(struct sk_buff *skb,
5747                             struct netlink_callback *cb)
5748 {
5749         struct mpath_info pinfo;
5750         struct cfg80211_registered_device *rdev;
5751         struct wireless_dev *wdev;
5752         u8 dst[ETH_ALEN];
5753         u8 mpp[ETH_ALEN];
5754         int path_idx = cb->args[2];
5755         int err;
5756
5757         rtnl_lock();
5758         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5759         if (err)
5760                 goto out_err;
5761
5762         if (!rdev->ops->dump_mpp) {
5763                 err = -EOPNOTSUPP;
5764                 goto out_err;
5765         }
5766
5767         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5768                 err = -EOPNOTSUPP;
5769                 goto out_err;
5770         }
5771
5772         while (1) {
5773                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5774                                     mpp, &pinfo);
5775                 if (err == -ENOENT)
5776                         break;
5777                 if (err)
5778                         goto out_err;
5779
5780                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5781                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
5782                                        wdev->netdev, dst, mpp,
5783                                        &pinfo) < 0)
5784                         goto out;
5785
5786                 path_idx++;
5787         }
5788
5789  out:
5790         cb->args[2] = path_idx;
5791         err = skb->len;
5792  out_err:
5793         rtnl_unlock();
5794         return err;
5795 }
5796
5797 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5798 {
5799         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5800         struct net_device *dev = info->user_ptr[1];
5801         struct wireless_dev *wdev = dev->ieee80211_ptr;
5802         struct bss_parameters params;
5803         int err;
5804
5805         memset(&params, 0, sizeof(params));
5806         /* default to not changing parameters */
5807         params.use_cts_prot = -1;
5808         params.use_short_preamble = -1;
5809         params.use_short_slot_time = -1;
5810         params.ap_isolate = -1;
5811         params.ht_opmode = -1;
5812         params.p2p_ctwindow = -1;
5813         params.p2p_opp_ps = -1;
5814
5815         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5816                 params.use_cts_prot =
5817                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5818         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5819                 params.use_short_preamble =
5820                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5821         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5822                 params.use_short_slot_time =
5823                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5824         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5825                 params.basic_rates =
5826                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5827                 params.basic_rates_len =
5828                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5829         }
5830         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5831                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5832         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5833                 params.ht_opmode =
5834                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5835
5836         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5837                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5838                         return -EINVAL;
5839                 params.p2p_ctwindow =
5840                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5841                 if (params.p2p_ctwindow < 0)
5842                         return -EINVAL;
5843                 if (params.p2p_ctwindow != 0 &&
5844                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5845                         return -EINVAL;
5846         }
5847
5848         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5849                 u8 tmp;
5850
5851                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5852                         return -EINVAL;
5853                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5854                 if (tmp > 1)
5855                         return -EINVAL;
5856                 params.p2p_opp_ps = tmp;
5857                 if (params.p2p_opp_ps &&
5858                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5859                         return -EINVAL;
5860         }
5861
5862         if (!rdev->ops->change_bss)
5863                 return -EOPNOTSUPP;
5864
5865         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5866             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5867                 return -EOPNOTSUPP;
5868
5869         wdev_lock(wdev);
5870         err = rdev_change_bss(rdev, dev, &params);
5871         wdev_unlock(wdev);
5872
5873         return err;
5874 }
5875
5876 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5877 {
5878         char *data = NULL;
5879         bool is_indoor;
5880         enum nl80211_user_reg_hint_type user_reg_hint_type;
5881         u32 owner_nlportid;
5882
5883         /*
5884          * You should only get this when cfg80211 hasn't yet initialized
5885          * completely when built-in to the kernel right between the time
5886          * window between nl80211_init() and regulatory_init(), if that is
5887          * even possible.
5888          */
5889         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5890                 return -EINPROGRESS;
5891
5892         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5893                 user_reg_hint_type =
5894                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5895         else
5896                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5897
5898         switch (user_reg_hint_type) {
5899         case NL80211_USER_REG_HINT_USER:
5900         case NL80211_USER_REG_HINT_CELL_BASE:
5901                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5902                         return -EINVAL;
5903
5904                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5905                 return regulatory_hint_user(data, user_reg_hint_type);
5906         case NL80211_USER_REG_HINT_INDOOR:
5907                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5908                         owner_nlportid = info->snd_portid;
5909                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5910                 } else {
5911                         owner_nlportid = 0;
5912                         is_indoor = true;
5913                 }
5914
5915                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5916         default:
5917                 return -EINVAL;
5918         }
5919 }
5920
5921 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
5922 {
5923         return reg_reload_regdb();
5924 }
5925
5926 static int nl80211_get_mesh_config(struct sk_buff *skb,
5927                                    struct genl_info *info)
5928 {
5929         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5930         struct net_device *dev = info->user_ptr[1];
5931         struct wireless_dev *wdev = dev->ieee80211_ptr;
5932         struct mesh_config cur_params;
5933         int err = 0;
5934         void *hdr;
5935         struct nlattr *pinfoattr;
5936         struct sk_buff *msg;
5937
5938         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5939                 return -EOPNOTSUPP;
5940
5941         if (!rdev->ops->get_mesh_config)
5942                 return -EOPNOTSUPP;
5943
5944         wdev_lock(wdev);
5945         /* If not connected, get default parameters */
5946         if (!wdev->mesh_id_len)
5947                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5948         else
5949                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5950         wdev_unlock(wdev);
5951
5952         if (err)
5953                 return err;
5954
5955         /* Draw up a netlink message to send back */
5956         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5957         if (!msg)
5958                 return -ENOMEM;
5959         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5960                              NL80211_CMD_GET_MESH_CONFIG);
5961         if (!hdr)
5962                 goto out;
5963         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5964         if (!pinfoattr)
5965                 goto nla_put_failure;
5966         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5967             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5968                         cur_params.dot11MeshRetryTimeout) ||
5969             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5970                         cur_params.dot11MeshConfirmTimeout) ||
5971             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5972                         cur_params.dot11MeshHoldingTimeout) ||
5973             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5974                         cur_params.dot11MeshMaxPeerLinks) ||
5975             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5976                        cur_params.dot11MeshMaxRetries) ||
5977             nla_put_u8(msg, NL80211_MESHCONF_TTL,
5978                        cur_params.dot11MeshTTL) ||
5979             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5980                        cur_params.element_ttl) ||
5981             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5982                        cur_params.auto_open_plinks) ||
5983             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5984                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5985             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5986                        cur_params.dot11MeshHWMPmaxPREQretries) ||
5987             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5988                         cur_params.path_refresh_time) ||
5989             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5990                         cur_params.min_discovery_timeout) ||
5991             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5992                         cur_params.dot11MeshHWMPactivePathTimeout) ||
5993             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5994                         cur_params.dot11MeshHWMPpreqMinInterval) ||
5995             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5996                         cur_params.dot11MeshHWMPperrMinInterval) ||
5997             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5998                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5999             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6000                        cur_params.dot11MeshHWMPRootMode) ||
6001             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6002                         cur_params.dot11MeshHWMPRannInterval) ||
6003             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6004                        cur_params.dot11MeshGateAnnouncementProtocol) ||
6005             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6006                        cur_params.dot11MeshForwarding) ||
6007             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6008                         cur_params.rssi_threshold) ||
6009             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6010                         cur_params.ht_opmode) ||
6011             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6012                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6013             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6014                         cur_params.dot11MeshHWMProotInterval) ||
6015             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6016                         cur_params.dot11MeshHWMPconfirmationInterval) ||
6017             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6018                         cur_params.power_mode) ||
6019             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6020                         cur_params.dot11MeshAwakeWindowDuration) ||
6021             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6022                         cur_params.plink_timeout))
6023                 goto nla_put_failure;
6024         nla_nest_end(msg, pinfoattr);
6025         genlmsg_end(msg, hdr);
6026         return genlmsg_reply(msg, info);
6027
6028  nla_put_failure:
6029  out:
6030         nlmsg_free(msg);
6031         return -ENOBUFS;
6032 }
6033
6034 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6035         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
6036         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
6037         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
6038         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
6039         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
6040         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
6041         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
6042         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
6043         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
6044         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6045         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6046         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
6047         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6048         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
6049         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
6050         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
6051         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
6052         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
6053         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
6054         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
6055         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
6056         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6057         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6058         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
6059         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
6060         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
6061         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6062         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6063 };
6064
6065 static const struct nla_policy
6066         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6067         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6068         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6069         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6070         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6071         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6072         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6073         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
6074                                     .len = IEEE80211_MAX_DATA_LEN },
6075         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6076 };
6077
6078 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
6079 {
6080         u8 val = nla_get_u8(nla);
6081         if (val < min || val > max)
6082                 return -EINVAL;
6083         *out = val;
6084         return 0;
6085 }
6086
6087 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
6088 {
6089         u8 val = nla_get_u8(nla);
6090         if (val < min || val > max)
6091                 return -EINVAL;
6092         *out = val;
6093         return 0;
6094 }
6095
6096 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
6097 {
6098         u16 val = nla_get_u16(nla);
6099         if (val < min || val > max)
6100                 return -EINVAL;
6101         *out = val;
6102         return 0;
6103 }
6104
6105 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
6106 {
6107         u32 val = nla_get_u32(nla);
6108         if (val < min || val > max)
6109                 return -EINVAL;
6110         *out = val;
6111         return 0;
6112 }
6113
6114 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
6115 {
6116         s32 val = nla_get_s32(nla);
6117         if (val < min || val > max)
6118                 return -EINVAL;
6119         *out = val;
6120         return 0;
6121 }
6122
6123 static int nl80211_check_power_mode(const struct nlattr *nla,
6124                                     enum nl80211_mesh_power_mode min,
6125                                     enum nl80211_mesh_power_mode max,
6126                                     enum nl80211_mesh_power_mode *out)
6127 {
6128         u32 val = nla_get_u32(nla);
6129         if (val < min || val > max)
6130                 return -EINVAL;
6131         *out = val;
6132         return 0;
6133 }
6134
6135 static int nl80211_parse_mesh_config(struct genl_info *info,
6136                                      struct mesh_config *cfg,
6137                                      u32 *mask_out)
6138 {
6139         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6140         u32 mask = 0;
6141         u16 ht_opmode;
6142
6143 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
6144 do {                                                                        \
6145         if (tb[attr]) {                                                     \
6146                 if (fn(tb[attr], min, max, &cfg->param))                    \
6147                         return -EINVAL;                                     \
6148                 mask |= (1 << (attr - 1));                                  \
6149         }                                                                   \
6150 } while (0)
6151
6152         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6153                 return -EINVAL;
6154         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
6155                              info->attrs[NL80211_ATTR_MESH_CONFIG],
6156                              nl80211_meshconf_params_policy, info->extack))
6157                 return -EINVAL;
6158
6159         /* This makes sure that there aren't more than 32 mesh config
6160          * parameters (otherwise our bitfield scheme would not work.) */
6161         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6162
6163         /* Fill in the params struct */
6164         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
6165                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
6166                                   nl80211_check_u16);
6167         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
6168                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6169                                   nl80211_check_u16);
6170         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
6171                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
6172                                   nl80211_check_u16);
6173         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
6174                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
6175                                   nl80211_check_u16);
6176         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
6177                                   mask, NL80211_MESHCONF_MAX_RETRIES,
6178                                   nl80211_check_u8);
6179         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
6180                                   mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
6181         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
6182                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
6183                                   nl80211_check_u8);
6184         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
6185                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6186                                   nl80211_check_bool);
6187         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6188                                   1, 255, mask,
6189                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6190                                   nl80211_check_u32);
6191         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
6192                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6193                                   nl80211_check_u8);
6194         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
6195                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
6196                                   nl80211_check_u32);
6197         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
6198                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6199                                   nl80211_check_u16);
6200         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6201                                   1, 65535, mask,
6202                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6203                                   nl80211_check_u32);
6204         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
6205                                   1, 65535, mask,
6206                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6207                                   nl80211_check_u16);
6208         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
6209                                   1, 65535, mask,
6210                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6211                                   nl80211_check_u16);
6212         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6213                                   dot11MeshHWMPnetDiameterTraversalTime,
6214                                   1, 65535, mask,
6215                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6216                                   nl80211_check_u16);
6217         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
6218                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
6219                                   nl80211_check_u8);
6220         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
6221                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6222                                   nl80211_check_u16);
6223         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6224                                   dot11MeshGateAnnouncementProtocol, 0, 1,
6225                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6226                                   nl80211_check_bool);
6227         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
6228                                   mask, NL80211_MESHCONF_FORWARDING,
6229                                   nl80211_check_bool);
6230         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
6231                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
6232                                   nl80211_check_s32);
6233         /*
6234          * Check HT operation mode based on
6235          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
6236          */
6237         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6238                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6239
6240                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6241                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6242                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6243                         return -EINVAL;
6244
6245                 /* NON_HT_STA bit is reserved, but some programs set it */
6246                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
6247
6248                 cfg->ht_opmode = ht_opmode;
6249                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6250         }
6251         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
6252                                   1, 65535, mask,
6253                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6254                                   nl80211_check_u32);
6255         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
6256                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6257                                   nl80211_check_u16);
6258         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6259                                   dot11MeshHWMPconfirmationInterval,
6260                                   1, 65535, mask,
6261                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6262                                   nl80211_check_u16);
6263         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
6264                                   NL80211_MESH_POWER_ACTIVE,
6265                                   NL80211_MESH_POWER_MAX,
6266                                   mask, NL80211_MESHCONF_POWER_MODE,
6267                                   nl80211_check_power_mode);
6268         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
6269                                   0, 65535, mask,
6270                                   NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
6271         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
6272                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
6273                                   nl80211_check_u32);
6274         if (mask_out)
6275                 *mask_out = mask;
6276
6277         return 0;
6278
6279 #undef FILL_IN_MESH_PARAM_IF_SET
6280 }
6281
6282 static int nl80211_parse_mesh_setup(struct genl_info *info,
6283                                      struct mesh_setup *setup)
6284 {
6285         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6286         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6287
6288         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6289                 return -EINVAL;
6290         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
6291                              info->attrs[NL80211_ATTR_MESH_SETUP],
6292                              nl80211_mesh_setup_params_policy, info->extack))
6293                 return -EINVAL;
6294
6295         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6296                 setup->sync_method =
6297                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6298                  IEEE80211_SYNC_METHOD_VENDOR :
6299                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6300
6301         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6302                 setup->path_sel_proto =
6303                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6304                  IEEE80211_PATH_PROTOCOL_VENDOR :
6305                  IEEE80211_PATH_PROTOCOL_HWMP;
6306
6307         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6308                 setup->path_metric =
6309                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6310                  IEEE80211_PATH_METRIC_VENDOR :
6311                  IEEE80211_PATH_METRIC_AIRTIME;
6312
6313         if (tb[NL80211_MESH_SETUP_IE]) {
6314                 struct nlattr *ieattr =
6315                         tb[NL80211_MESH_SETUP_IE];
6316                 if (!is_valid_ie_attr(ieattr))
6317                         return -EINVAL;
6318                 setup->ie = nla_data(ieattr);
6319                 setup->ie_len = nla_len(ieattr);
6320         }
6321         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6322             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6323                 return -EINVAL;
6324         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6325         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6326         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6327         if (setup->is_secure)
6328                 setup->user_mpm = true;
6329
6330         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6331                 if (!setup->user_mpm)
6332                         return -EINVAL;
6333                 setup->auth_id =
6334                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6335         }
6336
6337         return 0;
6338 }
6339
6340 static int nl80211_update_mesh_config(struct sk_buff *skb,
6341                                       struct genl_info *info)
6342 {
6343         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6344         struct net_device *dev = info->user_ptr[1];
6345         struct wireless_dev *wdev = dev->ieee80211_ptr;
6346         struct mesh_config cfg;
6347         u32 mask;
6348         int err;
6349
6350         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6351                 return -EOPNOTSUPP;
6352
6353         if (!rdev->ops->update_mesh_config)
6354                 return -EOPNOTSUPP;
6355
6356         err = nl80211_parse_mesh_config(info, &cfg, &mask);
6357         if (err)
6358                 return err;
6359
6360         wdev_lock(wdev);
6361         if (!wdev->mesh_id_len)
6362                 err = -ENOLINK;
6363
6364         if (!err)
6365                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6366
6367         wdev_unlock(wdev);
6368
6369         return err;
6370 }
6371
6372 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6373                               struct sk_buff *msg)
6374 {
6375         struct nlattr *nl_reg_rules;
6376         unsigned int i;
6377
6378         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6379             (regdom->dfs_region &&
6380              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6381                 goto nla_put_failure;
6382
6383         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6384         if (!nl_reg_rules)
6385                 goto nla_put_failure;
6386
6387         for (i = 0; i < regdom->n_reg_rules; i++) {
6388                 struct nlattr *nl_reg_rule;
6389                 const struct ieee80211_reg_rule *reg_rule;
6390                 const struct ieee80211_freq_range *freq_range;
6391                 const struct ieee80211_power_rule *power_rule;
6392                 unsigned int max_bandwidth_khz;
6393
6394                 reg_rule = &regdom->reg_rules[i];
6395                 freq_range = &reg_rule->freq_range;
6396                 power_rule = &reg_rule->power_rule;
6397
6398                 nl_reg_rule = nla_nest_start(msg, i);
6399                 if (!nl_reg_rule)
6400                         goto nla_put_failure;
6401
6402                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6403                 if (!max_bandwidth_khz)
6404                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6405                                                                   reg_rule);
6406
6407                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6408                                 reg_rule->flags) ||
6409                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6410                                 freq_range->start_freq_khz) ||
6411                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6412                                 freq_range->end_freq_khz) ||
6413                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6414                                 max_bandwidth_khz) ||
6415                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6416                                 power_rule->max_antenna_gain) ||
6417                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6418                                 power_rule->max_eirp) ||
6419                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6420                                 reg_rule->dfs_cac_ms))
6421                         goto nla_put_failure;
6422
6423                 nla_nest_end(msg, nl_reg_rule);
6424         }
6425
6426         nla_nest_end(msg, nl_reg_rules);
6427         return 0;
6428
6429 nla_put_failure:
6430         return -EMSGSIZE;
6431 }
6432
6433 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6434 {
6435         const struct ieee80211_regdomain *regdom = NULL;
6436         struct cfg80211_registered_device *rdev;
6437         struct wiphy *wiphy = NULL;
6438         struct sk_buff *msg;
6439         void *hdr;
6440
6441         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6442         if (!msg)
6443                 return -ENOBUFS;
6444
6445         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6446                              NL80211_CMD_GET_REG);
6447         if (!hdr)
6448                 goto put_failure;
6449
6450         if (info->attrs[NL80211_ATTR_WIPHY]) {
6451                 bool self_managed;
6452
6453                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6454                 if (IS_ERR(rdev)) {
6455                         nlmsg_free(msg);
6456                         return PTR_ERR(rdev);
6457                 }
6458
6459                 wiphy = &rdev->wiphy;
6460                 self_managed = wiphy->regulatory_flags &
6461                                REGULATORY_WIPHY_SELF_MANAGED;
6462                 regdom = get_wiphy_regdom(wiphy);
6463
6464                 /* a self-managed-reg device must have a private regdom */
6465                 if (WARN_ON(!regdom && self_managed)) {
6466                         nlmsg_free(msg);
6467                         return -EINVAL;
6468                 }
6469
6470                 if (regdom &&
6471                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6472                         goto nla_put_failure;
6473         }
6474
6475         if (!wiphy && reg_last_request_cell_base() &&
6476             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6477                         NL80211_USER_REG_HINT_CELL_BASE))
6478                 goto nla_put_failure;
6479
6480         rcu_read_lock();
6481
6482         if (!regdom)
6483                 regdom = rcu_dereference(cfg80211_regdomain);
6484
6485         if (nl80211_put_regdom(regdom, msg))
6486                 goto nla_put_failure_rcu;
6487
6488         rcu_read_unlock();
6489
6490         genlmsg_end(msg, hdr);
6491         return genlmsg_reply(msg, info);
6492
6493 nla_put_failure_rcu:
6494         rcu_read_unlock();
6495 nla_put_failure:
6496 put_failure:
6497         nlmsg_free(msg);
6498         return -EMSGSIZE;
6499 }
6500
6501 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6502                                u32 seq, int flags, struct wiphy *wiphy,
6503                                const struct ieee80211_regdomain *regdom)
6504 {
6505         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6506                                    NL80211_CMD_GET_REG);
6507
6508         if (!hdr)
6509                 return -1;
6510
6511         genl_dump_check_consistent(cb, hdr);
6512
6513         if (nl80211_put_regdom(regdom, msg))
6514                 goto nla_put_failure;
6515
6516         if (!wiphy && reg_last_request_cell_base() &&
6517             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6518                         NL80211_USER_REG_HINT_CELL_BASE))
6519                 goto nla_put_failure;
6520
6521         if (wiphy &&
6522             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6523                 goto nla_put_failure;
6524
6525         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6526             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6527                 goto nla_put_failure;
6528
6529         genlmsg_end(msg, hdr);
6530         return 0;
6531
6532 nla_put_failure:
6533         genlmsg_cancel(msg, hdr);
6534         return -EMSGSIZE;
6535 }
6536
6537 static int nl80211_get_reg_dump(struct sk_buff *skb,
6538                                 struct netlink_callback *cb)
6539 {
6540         const struct ieee80211_regdomain *regdom = NULL;
6541         struct cfg80211_registered_device *rdev;
6542         int err, reg_idx, start = cb->args[2];
6543
6544         rtnl_lock();
6545
6546         if (cfg80211_regdomain && start == 0) {
6547                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6548                                           NLM_F_MULTI, NULL,
6549                                           rtnl_dereference(cfg80211_regdomain));
6550                 if (err < 0)
6551                         goto out_err;
6552         }
6553
6554         /* the global regdom is idx 0 */
6555         reg_idx = 1;
6556         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6557                 regdom = get_wiphy_regdom(&rdev->wiphy);
6558                 if (!regdom)
6559                         continue;
6560
6561                 if (++reg_idx <= start)
6562                         continue;
6563
6564                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6565                                           NLM_F_MULTI, &rdev->wiphy, regdom);
6566                 if (err < 0) {
6567                         reg_idx--;
6568                         break;
6569                 }
6570         }
6571
6572         cb->args[2] = reg_idx;
6573         err = skb->len;
6574 out_err:
6575         rtnl_unlock();
6576         return err;
6577 }
6578
6579 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6580 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6581         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
6582         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
6583         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
6584         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
6585         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
6586         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
6587         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
6588 };
6589
6590 static int parse_reg_rule(struct nlattr *tb[],
6591         struct ieee80211_reg_rule *reg_rule)
6592 {
6593         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6594         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6595
6596         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6597                 return -EINVAL;
6598         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6599                 return -EINVAL;
6600         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6601                 return -EINVAL;
6602         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6603                 return -EINVAL;
6604         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6605                 return -EINVAL;
6606
6607         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6608
6609         freq_range->start_freq_khz =
6610                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6611         freq_range->end_freq_khz =
6612                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6613         freq_range->max_bandwidth_khz =
6614                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6615
6616         power_rule->max_eirp =
6617                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6618
6619         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6620                 power_rule->max_antenna_gain =
6621                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6622
6623         if (tb[NL80211_ATTR_DFS_CAC_TIME])
6624                 reg_rule->dfs_cac_ms =
6625                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6626
6627         return 0;
6628 }
6629
6630 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6631 {
6632         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6633         struct nlattr *nl_reg_rule;
6634         char *alpha2;
6635         int rem_reg_rules, r;
6636         u32 num_rules = 0, rule_idx = 0, size_of_regd;
6637         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6638         struct ieee80211_regdomain *rd;
6639
6640         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6641                 return -EINVAL;
6642
6643         if (!info->attrs[NL80211_ATTR_REG_RULES])
6644                 return -EINVAL;
6645
6646         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6647
6648         if (info->attrs[NL80211_ATTR_DFS_REGION])
6649                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6650
6651         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6652                             rem_reg_rules) {
6653                 num_rules++;
6654                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6655                         return -EINVAL;
6656         }
6657
6658         if (!reg_is_valid_request(alpha2))
6659                 return -EINVAL;
6660
6661         size_of_regd = sizeof(struct ieee80211_regdomain) +
6662                        num_rules * sizeof(struct ieee80211_reg_rule);
6663
6664         rd = kzalloc(size_of_regd, GFP_KERNEL);
6665         if (!rd)
6666                 return -ENOMEM;
6667
6668         rd->n_reg_rules = num_rules;
6669         rd->alpha2[0] = alpha2[0];
6670         rd->alpha2[1] = alpha2[1];
6671
6672         /*
6673          * Disable DFS master mode if the DFS region was
6674          * not supported or known on this kernel.
6675          */
6676         if (reg_supported_dfs_region(dfs_region))
6677                 rd->dfs_region = dfs_region;
6678
6679         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6680                             rem_reg_rules) {
6681                 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6682                                      nl_reg_rule, reg_rule_policy,
6683                                      info->extack);
6684                 if (r)
6685                         goto bad_reg;
6686                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6687                 if (r)
6688                         goto bad_reg;
6689
6690                 rule_idx++;
6691
6692                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6693                         r = -EINVAL;
6694                         goto bad_reg;
6695                 }
6696         }
6697
6698         /* set_regdom takes ownership of rd */
6699         return set_regdom(rd, REGD_SOURCE_CRDA);
6700  bad_reg:
6701         kfree(rd);
6702         return r;
6703 }
6704 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6705
6706 static int validate_scan_freqs(struct nlattr *freqs)
6707 {
6708         struct nlattr *attr1, *attr2;
6709         int n_channels = 0, tmp1, tmp2;
6710
6711         nla_for_each_nested(attr1, freqs, tmp1)
6712                 if (nla_len(attr1) != sizeof(u32))
6713                         return 0;
6714
6715         nla_for_each_nested(attr1, freqs, tmp1) {
6716                 n_channels++;
6717                 /*
6718                  * Some hardware has a limited channel list for
6719                  * scanning, and it is pretty much nonsensical
6720                  * to scan for a channel twice, so disallow that
6721                  * and don't require drivers to check that the
6722                  * channel list they get isn't longer than what
6723                  * they can scan, as long as they can scan all
6724                  * the channels they registered at once.
6725                  */
6726                 nla_for_each_nested(attr2, freqs, tmp2)
6727                         if (attr1 != attr2 &&
6728                             nla_get_u32(attr1) == nla_get_u32(attr2))
6729                                 return 0;
6730         }
6731
6732         return n_channels;
6733 }
6734
6735 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6736 {
6737         return b < NUM_NL80211_BANDS && wiphy->bands[b];
6738 }
6739
6740 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6741                             struct cfg80211_bss_selection *bss_select)
6742 {
6743         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6744         struct nlattr *nest;
6745         int err;
6746         bool found = false;
6747         int i;
6748
6749         /* only process one nested attribute */
6750         nest = nla_data(nla);
6751         if (!nla_ok(nest, nla_len(nest)))
6752                 return -EINVAL;
6753
6754         err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6755                                nl80211_bss_select_policy, NULL);
6756         if (err)
6757                 return err;
6758
6759         /* only one attribute may be given */
6760         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6761                 if (attr[i]) {
6762                         if (found)
6763                                 return -EINVAL;
6764                         found = true;
6765                 }
6766         }
6767
6768         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6769
6770         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6771                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6772
6773         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6774                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6775                 bss_select->param.band_pref =
6776                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6777                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6778                         return -EINVAL;
6779         }
6780
6781         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6782                 struct nl80211_bss_select_rssi_adjust *adj_param;
6783
6784                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6785                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6786                 bss_select->param.adjust.band = adj_param->band;
6787                 bss_select->param.adjust.delta = adj_param->delta;
6788                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6789                         return -EINVAL;
6790         }
6791
6792         /* user-space did not provide behaviour attribute */
6793         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6794                 return -EINVAL;
6795
6796         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6797                 return -EINVAL;
6798
6799         return 0;
6800 }
6801
6802 static int nl80211_parse_random_mac(struct nlattr **attrs,
6803                                     u8 *mac_addr, u8 *mac_addr_mask)
6804 {
6805         int i;
6806
6807         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6808                 eth_zero_addr(mac_addr);
6809                 eth_zero_addr(mac_addr_mask);
6810                 mac_addr[0] = 0x2;
6811                 mac_addr_mask[0] = 0x3;
6812
6813                 return 0;
6814         }
6815
6816         /* need both or none */
6817         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6818                 return -EINVAL;
6819
6820         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6821         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6822
6823         /* don't allow or configure an mcast address */
6824         if (!is_multicast_ether_addr(mac_addr_mask) ||
6825             is_multicast_ether_addr(mac_addr))
6826                 return -EINVAL;
6827
6828         /*
6829          * allow users to pass a MAC address that has bits set outside
6830          * of the mask, but don't bother drivers with having to deal
6831          * with such bits
6832          */
6833         for (i = 0; i < ETH_ALEN; i++)
6834                 mac_addr[i] &= mac_addr_mask[i];
6835
6836         return 0;
6837 }
6838
6839 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
6840 {
6841         ASSERT_WDEV_LOCK(wdev);
6842
6843         if (!cfg80211_beaconing_iface_active(wdev))
6844                 return true;
6845
6846         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
6847                 return true;
6848
6849         return regulatory_pre_cac_allowed(wdev->wiphy);
6850 }
6851
6852 static int
6853 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
6854                          void *request, struct nlattr **attrs,
6855                          bool is_sched_scan)
6856 {
6857         u8 *mac_addr, *mac_addr_mask;
6858         u32 *flags;
6859         enum nl80211_feature_flags randomness_flag;
6860
6861         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
6862                 return 0;
6863
6864         if (is_sched_scan) {
6865                 struct cfg80211_sched_scan_request *req = request;
6866
6867                 randomness_flag = wdev ?
6868                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
6869                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6870                 flags = &req->flags;
6871                 mac_addr = req->mac_addr;
6872                 mac_addr_mask = req->mac_addr_mask;
6873         } else {
6874                 struct cfg80211_scan_request *req = request;
6875
6876                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
6877                 flags = &req->flags;
6878                 mac_addr = req->mac_addr;
6879                 mac_addr_mask = req->mac_addr_mask;
6880         }
6881
6882         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
6883
6884         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6885              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
6886             ((*flags & NL80211_SCAN_FLAG_LOW_SPAN) &&
6887              !wiphy_ext_feature_isset(wiphy,
6888                                       NL80211_EXT_FEATURE_LOW_SPAN_SCAN)) ||
6889             ((*flags & NL80211_SCAN_FLAG_LOW_POWER) &&
6890              !wiphy_ext_feature_isset(wiphy,
6891                                       NL80211_EXT_FEATURE_LOW_POWER_SCAN)) ||
6892             ((*flags & NL80211_SCAN_FLAG_HIGH_ACCURACY) &&
6893              !wiphy_ext_feature_isset(wiphy,
6894                                       NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN)))
6895                 return -EOPNOTSUPP;
6896
6897         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6898                 int err;
6899
6900                 if (!(wiphy->features & randomness_flag) ||
6901                     (wdev && wdev->current_bss))
6902                         return -EOPNOTSUPP;
6903
6904                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
6905                 if (err)
6906                         return err;
6907         }
6908
6909         if ((*flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME) &&
6910             !wiphy_ext_feature_isset(wiphy,
6911                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME))
6912                 return -EOPNOTSUPP;
6913
6914         if ((*flags & NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP) &&
6915            !wiphy_ext_feature_isset(wiphy,
6916                                     NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP))
6917                 return -EOPNOTSUPP;
6918
6919         if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
6920             !wiphy_ext_feature_isset(wiphy,
6921                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION))
6922                 return -EOPNOTSUPP;
6923
6924         if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE) &&
6925             !wiphy_ext_feature_isset(wiphy,
6926                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE))
6927                 return -EOPNOTSUPP;
6928
6929         return 0;
6930 }
6931
6932 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6933 {
6934         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6935         struct wireless_dev *wdev = info->user_ptr[1];
6936         struct cfg80211_scan_request *request;
6937         struct nlattr *attr;
6938         struct wiphy *wiphy;
6939         int err, tmp, n_ssids = 0, n_channels, i;
6940         size_t ie_len;
6941
6942         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6943                 return -EINVAL;
6944
6945         wiphy = &rdev->wiphy;
6946
6947         if (wdev->iftype == NL80211_IFTYPE_NAN)
6948                 return -EOPNOTSUPP;
6949
6950         if (!rdev->ops->scan)
6951                 return -EOPNOTSUPP;
6952
6953         if (rdev->scan_req || rdev->scan_msg) {
6954                 err = -EBUSY;
6955                 goto unlock;
6956         }
6957
6958         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6959                 n_channels = validate_scan_freqs(
6960                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6961                 if (!n_channels) {
6962                         err = -EINVAL;
6963                         goto unlock;
6964                 }
6965         } else {
6966                 n_channels = ieee80211_get_num_supported_channels(wiphy);
6967         }
6968
6969         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6970                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6971                         n_ssids++;
6972
6973         if (n_ssids > wiphy->max_scan_ssids) {
6974                 err = -EINVAL;
6975                 goto unlock;
6976         }
6977
6978         if (info->attrs[NL80211_ATTR_IE])
6979                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6980         else
6981                 ie_len = 0;
6982
6983         if (ie_len > wiphy->max_scan_ie_len) {
6984                 err = -EINVAL;
6985                 goto unlock;
6986         }
6987
6988         request = kzalloc(sizeof(*request)
6989                         + sizeof(*request->ssids) * n_ssids
6990                         + sizeof(*request->channels) * n_channels
6991                         + ie_len, GFP_KERNEL);
6992         if (!request) {
6993                 err = -ENOMEM;
6994                 goto unlock;
6995         }
6996
6997         if (n_ssids)
6998                 request->ssids = (void *)&request->channels[n_channels];
6999         request->n_ssids = n_ssids;
7000         if (ie_len) {
7001                 if (n_ssids)
7002                         request->ie = (void *)(request->ssids + n_ssids);
7003                 else
7004                         request->ie = (void *)(request->channels + n_channels);
7005         }
7006
7007         i = 0;
7008         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7009                 /* user specified, bail out if channel not found */
7010                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7011                         struct ieee80211_channel *chan;
7012
7013                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7014
7015                         if (!chan) {
7016                                 err = -EINVAL;
7017                                 goto out_free;
7018                         }
7019
7020                         /* ignore disabled channels */
7021                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7022                                 continue;
7023
7024                         request->channels[i] = chan;
7025                         i++;
7026                 }
7027         } else {
7028                 enum nl80211_band band;
7029
7030                 /* all channels */
7031                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7032                         int j;
7033
7034                         if (!wiphy->bands[band])
7035                                 continue;
7036                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7037                                 struct ieee80211_channel *chan;
7038
7039                                 chan = &wiphy->bands[band]->channels[j];
7040
7041                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7042                                         continue;
7043
7044                                 request->channels[i] = chan;
7045                                 i++;
7046                         }
7047                 }
7048         }
7049
7050         if (!i) {
7051                 err = -EINVAL;
7052                 goto out_free;
7053         }
7054
7055         request->n_channels = i;
7056
7057         wdev_lock(wdev);
7058         if (!cfg80211_off_channel_oper_allowed(wdev)) {
7059                 struct ieee80211_channel *chan;
7060
7061                 if (request->n_channels != 1) {
7062                         wdev_unlock(wdev);
7063                         err = -EBUSY;
7064                         goto out_free;
7065                 }
7066
7067                 chan = request->channels[0];
7068                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7069                         wdev_unlock(wdev);
7070                         err = -EBUSY;
7071                         goto out_free;
7072                 }
7073         }
7074         wdev_unlock(wdev);
7075
7076         i = 0;
7077         if (n_ssids) {
7078                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7079                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7080                                 err = -EINVAL;
7081                                 goto out_free;
7082                         }
7083                         request->ssids[i].ssid_len = nla_len(attr);
7084                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7085                         i++;
7086                 }
7087         }
7088
7089         if (info->attrs[NL80211_ATTR_IE]) {
7090                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7091                 memcpy((void *)request->ie,
7092                        nla_data(info->attrs[NL80211_ATTR_IE]),
7093                        request->ie_len);
7094         }
7095
7096         for (i = 0; i < NUM_NL80211_BANDS; i++)
7097                 if (wiphy->bands[i])
7098                         request->rates[i] =
7099                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
7100
7101         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7102                 nla_for_each_nested(attr,
7103                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7104                                     tmp) {
7105                         enum nl80211_band band = nla_type(attr);
7106
7107                         if (band < 0 || band >= NUM_NL80211_BANDS) {
7108                                 err = -EINVAL;
7109                                 goto out_free;
7110                         }
7111
7112                         if (!wiphy->bands[band])
7113                                 continue;
7114
7115                         err = ieee80211_get_ratemask(wiphy->bands[band],
7116                                                      nla_data(attr),
7117                                                      nla_len(attr),
7118                                                      &request->rates[band]);
7119                         if (err)
7120                                 goto out_free;
7121                 }
7122         }
7123
7124         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7125                 if (!wiphy_ext_feature_isset(wiphy,
7126                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7127                         err = -EOPNOTSUPP;
7128                         goto out_free;
7129                 }
7130
7131                 request->duration =
7132                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7133                 request->duration_mandatory =
7134                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7135         }
7136
7137         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7138                                        false);
7139         if (err)
7140                 goto out_free;
7141
7142         request->no_cck =
7143                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7144
7145         /* Initial implementation used NL80211_ATTR_MAC to set the specific
7146          * BSSID to scan for. This was problematic because that same attribute
7147          * was already used for another purpose (local random MAC address). The
7148          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7149          * compatibility with older userspace components, also use the
7150          * NL80211_ATTR_MAC value here if it can be determined to be used for
7151          * the specific BSSID use case instead of the random MAC address
7152          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7153          */
7154         if (info->attrs[NL80211_ATTR_BSSID])
7155                 memcpy(request->bssid,
7156                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7157         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7158                  info->attrs[NL80211_ATTR_MAC])
7159                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7160                        ETH_ALEN);
7161         else
7162                 eth_broadcast_addr(request->bssid);
7163
7164         request->wdev = wdev;
7165         request->wiphy = &rdev->wiphy;
7166         request->scan_start = jiffies;
7167
7168         rdev->scan_req = request;
7169         err = rdev_scan(rdev, request);
7170
7171         if (!err) {
7172                 nl80211_send_scan_start(rdev, wdev);
7173                 if (wdev->netdev)
7174                         dev_hold(wdev->netdev);
7175         } else {
7176  out_free:
7177                 rdev->scan_req = NULL;
7178                 kfree(request);
7179         }
7180
7181  unlock:
7182         return err;
7183 }
7184
7185 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7186 {
7187         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7188         struct wireless_dev *wdev = info->user_ptr[1];
7189
7190         if (!rdev->ops->abort_scan)
7191                 return -EOPNOTSUPP;
7192
7193         if (rdev->scan_msg)
7194                 return 0;
7195
7196         if (!rdev->scan_req)
7197                 return -ENOENT;
7198
7199         rdev_abort_scan(rdev, wdev);
7200         return 0;
7201 }
7202
7203 static int
7204 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7205                                struct cfg80211_sched_scan_request *request,
7206                                struct nlattr **attrs)
7207 {
7208         int tmp, err, i = 0;
7209         struct nlattr *attr;
7210
7211         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7212                 u32 interval;
7213
7214                 /*
7215                  * If scan plans are not specified,
7216                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7217                  * case one scan plan will be set with the specified scan
7218                  * interval and infinite number of iterations.
7219                  */
7220                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7221                 if (!interval)
7222                         return -EINVAL;
7223
7224                 request->scan_plans[0].interval =
7225                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
7226                 if (!request->scan_plans[0].interval)
7227                         return -EINVAL;
7228
7229                 if (request->scan_plans[0].interval >
7230                     wiphy->max_sched_scan_plan_interval)
7231                         request->scan_plans[0].interval =
7232                                 wiphy->max_sched_scan_plan_interval;
7233
7234                 return 0;
7235         }
7236
7237         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7238                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7239
7240                 if (WARN_ON(i >= n_plans))
7241                         return -EINVAL;
7242
7243                 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
7244                                        attr, nl80211_plan_policy, NULL);
7245                 if (err)
7246                         return err;
7247
7248                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7249                         return -EINVAL;
7250
7251                 request->scan_plans[i].interval =
7252                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7253                 if (!request->scan_plans[i].interval ||
7254                     request->scan_plans[i].interval >
7255                     wiphy->max_sched_scan_plan_interval)
7256                         return -EINVAL;
7257
7258                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7259                         request->scan_plans[i].iterations =
7260                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7261                         if (!request->scan_plans[i].iterations ||
7262                             (request->scan_plans[i].iterations >
7263                              wiphy->max_sched_scan_plan_iterations))
7264                                 return -EINVAL;
7265                 } else if (i < n_plans - 1) {
7266                         /*
7267                          * All scan plans but the last one must specify
7268                          * a finite number of iterations
7269                          */
7270                         return -EINVAL;
7271                 }
7272
7273                 i++;
7274         }
7275
7276         /*
7277          * The last scan plan must not specify the number of
7278          * iterations, it is supposed to run infinitely
7279          */
7280         if (request->scan_plans[n_plans - 1].iterations)
7281                 return  -EINVAL;
7282
7283         return 0;
7284 }
7285
7286 static struct cfg80211_sched_scan_request *
7287 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7288                          struct nlattr **attrs, int max_match_sets)
7289 {
7290         struct cfg80211_sched_scan_request *request;
7291         struct nlattr *attr;
7292         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7293         enum nl80211_band band;
7294         size_t ie_len;
7295         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7296         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7297
7298         if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
7299                 return ERR_PTR(-EINVAL);
7300
7301         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7302                 n_channels = validate_scan_freqs(
7303                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7304                 if (!n_channels)
7305                         return ERR_PTR(-EINVAL);
7306         } else {
7307                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7308         }
7309
7310         if (attrs[NL80211_ATTR_SCAN_SSIDS])
7311                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7312                                     tmp)
7313                         n_ssids++;
7314
7315         if (n_ssids > wiphy->max_sched_scan_ssids)
7316                 return ERR_PTR(-EINVAL);
7317
7318         /*
7319          * First, count the number of 'real' matchsets. Due to an issue with
7320          * the old implementation, matchsets containing only the RSSI attribute
7321          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7322          * RSSI for all matchsets, rather than their own matchset for reporting
7323          * all APs with a strong RSSI. This is needed to be compatible with
7324          * older userspace that treated a matchset with only the RSSI as the
7325          * global RSSI for all other matchsets - if there are other matchsets.
7326          */
7327         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7328                 nla_for_each_nested(attr,
7329                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7330                                     tmp) {
7331                         struct nlattr *rssi;
7332
7333                         err = nla_parse_nested(tb,
7334                                                NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7335                                                attr, nl80211_match_policy,
7336                                                NULL);
7337                         if (err)
7338                                 return ERR_PTR(err);
7339
7340                         /* SSID and BSSID are mutually exclusive */
7341                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7342                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7343                                 return ERR_PTR(-EINVAL);
7344
7345                         /* add other standalone attributes here */
7346                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7347                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7348                                 n_match_sets++;
7349                                 continue;
7350                         }
7351                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7352                         if (rssi)
7353                                 default_match_rssi = nla_get_s32(rssi);
7354                 }
7355         }
7356
7357         /* However, if there's no other matchset, add the RSSI one */
7358         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7359                 n_match_sets = 1;
7360
7361         if (n_match_sets > max_match_sets)
7362                 return ERR_PTR(-EINVAL);
7363
7364         if (attrs[NL80211_ATTR_IE])
7365                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7366         else
7367                 ie_len = 0;
7368
7369         if (ie_len > wiphy->max_sched_scan_ie_len)
7370                 return ERR_PTR(-EINVAL);
7371
7372         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7373                 /*
7374                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7375                  * each scan plan already specifies its own interval
7376                  */
7377                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7378                         return ERR_PTR(-EINVAL);
7379
7380                 nla_for_each_nested(attr,
7381                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7382                         n_plans++;
7383         } else {
7384                 /*
7385                  * The scan interval attribute is kept for backward
7386                  * compatibility. If no scan plans are specified and sched scan
7387                  * interval is specified, one scan plan will be set with this
7388                  * scan interval and infinite number of iterations.
7389                  */
7390                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7391                         return ERR_PTR(-EINVAL);
7392
7393                 n_plans = 1;
7394         }
7395
7396         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7397                 return ERR_PTR(-EINVAL);
7398
7399         if (!wiphy_ext_feature_isset(
7400                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7401             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7402              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7403                 return ERR_PTR(-EINVAL);
7404
7405         request = kzalloc(sizeof(*request)
7406                         + sizeof(*request->ssids) * n_ssids
7407                         + sizeof(*request->match_sets) * n_match_sets
7408                         + sizeof(*request->scan_plans) * n_plans
7409                         + sizeof(*request->channels) * n_channels
7410                         + ie_len, GFP_KERNEL);
7411         if (!request)
7412                 return ERR_PTR(-ENOMEM);
7413
7414         if (n_ssids)
7415                 request->ssids = (void *)&request->channels[n_channels];
7416         request->n_ssids = n_ssids;
7417         if (ie_len) {
7418                 if (n_ssids)
7419                         request->ie = (void *)(request->ssids + n_ssids);
7420                 else
7421                         request->ie = (void *)(request->channels + n_channels);
7422         }
7423
7424         if (n_match_sets) {
7425                 if (request->ie)
7426                         request->match_sets = (void *)(request->ie + ie_len);
7427                 else if (n_ssids)
7428                         request->match_sets =
7429                                 (void *)(request->ssids + n_ssids);
7430                 else
7431                         request->match_sets =
7432                                 (void *)(request->channels + n_channels);
7433         }
7434         request->n_match_sets = n_match_sets;
7435
7436         if (n_match_sets)
7437                 request->scan_plans = (void *)(request->match_sets +
7438                                                n_match_sets);
7439         else if (request->ie)
7440                 request->scan_plans = (void *)(request->ie + ie_len);
7441         else if (n_ssids)
7442                 request->scan_plans = (void *)(request->ssids + n_ssids);
7443         else
7444                 request->scan_plans = (void *)(request->channels + n_channels);
7445
7446         request->n_scan_plans = n_plans;
7447
7448         i = 0;
7449         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7450                 /* user specified, bail out if channel not found */
7451                 nla_for_each_nested(attr,
7452                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7453                                     tmp) {
7454                         struct ieee80211_channel *chan;
7455
7456                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7457
7458                         if (!chan) {
7459                                 err = -EINVAL;
7460                                 goto out_free;
7461                         }
7462
7463                         /* ignore disabled channels */
7464                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7465                                 continue;
7466
7467                         request->channels[i] = chan;
7468                         i++;
7469                 }
7470         } else {
7471                 /* all channels */
7472                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7473                         int j;
7474
7475                         if (!wiphy->bands[band])
7476                                 continue;
7477                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7478                                 struct ieee80211_channel *chan;
7479
7480                                 chan = &wiphy->bands[band]->channels[j];
7481
7482                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7483                                         continue;
7484
7485                                 request->channels[i] = chan;
7486                                 i++;
7487                         }
7488                 }
7489         }
7490
7491         if (!i) {
7492                 err = -EINVAL;
7493                 goto out_free;
7494         }
7495
7496         request->n_channels = i;
7497
7498         i = 0;
7499         if (n_ssids) {
7500                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7501                                     tmp) {
7502                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7503                                 err = -EINVAL;
7504                                 goto out_free;
7505                         }
7506                         request->ssids[i].ssid_len = nla_len(attr);
7507                         memcpy(request->ssids[i].ssid, nla_data(attr),
7508                                nla_len(attr));
7509                         i++;
7510                 }
7511         }
7512
7513         i = 0;
7514         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7515                 nla_for_each_nested(attr,
7516                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7517                                     tmp) {
7518                         struct nlattr *ssid, *bssid, *rssi;
7519
7520                         err = nla_parse_nested(tb,
7521                                                NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7522                                                attr, nl80211_match_policy,
7523                                                NULL);
7524                         if (err)
7525                                 goto out_free;
7526                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7527                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
7528                         if (ssid || bssid) {
7529                                 if (WARN_ON(i >= n_match_sets)) {
7530                                         /* this indicates a programming error,
7531                                          * the loop above should have verified
7532                                          * things properly
7533                                          */
7534                                         err = -EINVAL;
7535                                         goto out_free;
7536                                 }
7537
7538                                 if (ssid) {
7539                                         if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7540                                                 err = -EINVAL;
7541                                                 goto out_free;
7542                                         }
7543                                         memcpy(request->match_sets[i].ssid.ssid,
7544                                                nla_data(ssid), nla_len(ssid));
7545                                         request->match_sets[i].ssid.ssid_len =
7546                                                 nla_len(ssid);
7547                                 }
7548                                 if (bssid) {
7549                                         if (nla_len(bssid) != ETH_ALEN) {
7550                                                 err = -EINVAL;
7551                                                 goto out_free;
7552                                         }
7553                                         memcpy(request->match_sets[i].bssid,
7554                                                nla_data(bssid), ETH_ALEN);
7555                                 }
7556
7557                                 /* special attribute - old implementation w/a */
7558                                 request->match_sets[i].rssi_thold =
7559                                         default_match_rssi;
7560                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7561                                 if (rssi)
7562                                         request->match_sets[i].rssi_thold =
7563                                                 nla_get_s32(rssi);
7564                         }
7565                         i++;
7566                 }
7567
7568                 /* there was no other matchset, so the RSSI one is alone */
7569                 if (i == 0 && n_match_sets)
7570                         request->match_sets[0].rssi_thold = default_match_rssi;
7571
7572                 request->min_rssi_thold = INT_MAX;
7573                 for (i = 0; i < n_match_sets; i++)
7574                         request->min_rssi_thold =
7575                                 min(request->match_sets[i].rssi_thold,
7576                                     request->min_rssi_thold);
7577         } else {
7578                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7579         }
7580
7581         if (ie_len) {
7582                 request->ie_len = ie_len;
7583                 memcpy((void *)request->ie,
7584                        nla_data(attrs[NL80211_ATTR_IE]),
7585                        request->ie_len);
7586         }
7587
7588         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
7589         if (err)
7590                 goto out_free;
7591
7592         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7593                 request->delay =
7594                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7595
7596         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
7597                 request->relative_rssi = nla_get_s8(
7598                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
7599                 request->relative_rssi_set = true;
7600         }
7601
7602         if (request->relative_rssi_set &&
7603             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
7604                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
7605
7606                 rssi_adjust = nla_data(
7607                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
7608                 request->rssi_adjust.band = rssi_adjust->band;
7609                 request->rssi_adjust.delta = rssi_adjust->delta;
7610                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
7611                         err = -EINVAL;
7612                         goto out_free;
7613                 }
7614         }
7615
7616         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7617         if (err)
7618                 goto out_free;
7619
7620         request->scan_start = jiffies;
7621
7622         return request;
7623
7624 out_free:
7625         kfree(request);
7626         return ERR_PTR(err);
7627 }
7628
7629 static int nl80211_start_sched_scan(struct sk_buff *skb,
7630                                     struct genl_info *info)
7631 {
7632         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7633         struct net_device *dev = info->user_ptr[1];
7634         struct wireless_dev *wdev = dev->ieee80211_ptr;
7635         struct cfg80211_sched_scan_request *sched_scan_req;
7636         bool want_multi;
7637         int err;
7638
7639         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
7640                 return -EOPNOTSUPP;
7641
7642         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
7643         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
7644         if (err)
7645                 return err;
7646
7647         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7648                                                   info->attrs,
7649                                                   rdev->wiphy.max_match_sets);
7650
7651         err = PTR_ERR_OR_ZERO(sched_scan_req);
7652         if (err)
7653                 goto out_err;
7654
7655         /* leave request id zero for legacy request
7656          * or if driver does not support multi-scheduled scan
7657          */
7658         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
7659                 while (!sched_scan_req->reqid)
7660                         sched_scan_req->reqid = rdev->wiphy.cookie_counter++;
7661         }
7662
7663         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7664         if (err)
7665                 goto out_free;
7666
7667         sched_scan_req->dev = dev;
7668         sched_scan_req->wiphy = &rdev->wiphy;
7669
7670         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7671                 sched_scan_req->owner_nlportid = info->snd_portid;
7672
7673         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
7674
7675         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
7676         return 0;
7677
7678 out_free:
7679         kfree(sched_scan_req);
7680 out_err:
7681         return err;
7682 }
7683
7684 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7685                                    struct genl_info *info)
7686 {
7687         struct cfg80211_sched_scan_request *req;
7688         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7689         u64 cookie;
7690
7691         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
7692                 return -EOPNOTSUPP;
7693
7694         if (info->attrs[NL80211_ATTR_COOKIE]) {
7695                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7696                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
7697         }
7698
7699         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
7700                                      struct cfg80211_sched_scan_request,
7701                                      list);
7702         if (!req || req->reqid ||
7703             (req->owner_nlportid &&
7704              req->owner_nlportid != info->snd_portid))
7705                 return -ENOENT;
7706
7707         return cfg80211_stop_sched_scan_req(rdev, req, false);
7708 }
7709
7710 static int nl80211_start_radar_detection(struct sk_buff *skb,
7711                                          struct genl_info *info)
7712 {
7713         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7714         struct net_device *dev = info->user_ptr[1];
7715         struct wireless_dev *wdev = dev->ieee80211_ptr;
7716         struct wiphy *wiphy = wdev->wiphy;
7717         struct cfg80211_chan_def chandef;
7718         enum nl80211_dfs_regions dfs_region;
7719         unsigned int cac_time_ms;
7720         int err;
7721
7722         dfs_region = reg_get_dfs_region(wiphy);
7723         if (dfs_region == NL80211_DFS_UNSET)
7724                 return -EINVAL;
7725
7726         err = nl80211_parse_chandef(rdev, info, &chandef);
7727         if (err)
7728                 return err;
7729
7730         if (netif_carrier_ok(dev))
7731                 return -EBUSY;
7732
7733         if (wdev->cac_started)
7734                 return -EBUSY;
7735
7736         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
7737         if (err < 0)
7738                 return err;
7739
7740         if (err == 0)
7741                 return -EINVAL;
7742
7743         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
7744                 return -EINVAL;
7745
7746         /* CAC start is offloaded to HW and can't be started manually */
7747         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
7748                 return -EOPNOTSUPP;
7749
7750         if (!rdev->ops->start_radar_detection)
7751                 return -EOPNOTSUPP;
7752
7753         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7754         if (WARN_ON(!cac_time_ms))
7755                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7756
7757         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7758         if (!err) {
7759                 wdev->chandef = chandef;
7760                 wdev->cac_started = true;
7761                 wdev->cac_start_time = jiffies;
7762                 wdev->cac_time_ms = cac_time_ms;
7763         }
7764         return err;
7765 }
7766
7767 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7768 {
7769         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7770         struct net_device *dev = info->user_ptr[1];
7771         struct wireless_dev *wdev = dev->ieee80211_ptr;
7772         struct cfg80211_csa_settings params;
7773         /* csa_attrs is defined static to avoid waste of stack size - this
7774          * function is called under RTNL lock, so this should not be a problem.
7775          */
7776         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7777         int err;
7778         bool need_new_beacon = false;
7779         bool need_handle_dfs_flag = true;
7780         int len, i;
7781         u32 cs_count;
7782
7783         if (!rdev->ops->channel_switch ||
7784             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7785                 return -EOPNOTSUPP;
7786
7787         switch (dev->ieee80211_ptr->iftype) {
7788         case NL80211_IFTYPE_AP:
7789         case NL80211_IFTYPE_P2P_GO:
7790                 need_new_beacon = true;
7791                 /* For all modes except AP the handle_dfs flag needs to be
7792                  * supplied to tell the kernel that userspace will handle radar
7793                  * events when they happen. Otherwise a switch to a channel
7794                  * requiring DFS will be rejected.
7795                  */
7796                 need_handle_dfs_flag = false;
7797
7798                 /* useless if AP is not running */
7799                 if (!wdev->beacon_interval)
7800                         return -ENOTCONN;
7801                 break;
7802         case NL80211_IFTYPE_ADHOC:
7803                 if (!wdev->ssid_len)
7804                         return -ENOTCONN;
7805                 break;
7806         case NL80211_IFTYPE_MESH_POINT:
7807                 if (!wdev->mesh_id_len)
7808                         return -ENOTCONN;
7809                 break;
7810         default:
7811                 return -EOPNOTSUPP;
7812         }
7813
7814         memset(&params, 0, sizeof(params));
7815
7816         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7817             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7818                 return -EINVAL;
7819
7820         /* only important for AP, IBSS and mesh create IEs internally */
7821         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7822                 return -EINVAL;
7823
7824         /* Even though the attribute is u32, the specification says
7825          * u8, so let's make sure we don't overflow.
7826          */
7827         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7828         if (cs_count > 255)
7829                 return -EINVAL;
7830
7831         params.count = cs_count;
7832
7833         if (!need_new_beacon)
7834                 goto skip_beacons;
7835
7836         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7837         if (err)
7838                 return err;
7839
7840         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7841                                info->attrs[NL80211_ATTR_CSA_IES],
7842                                nl80211_policy, info->extack);
7843         if (err)
7844                 return err;
7845
7846         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7847         if (err)
7848                 return err;
7849
7850         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7851                 return -EINVAL;
7852
7853         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7854         if (!len || (len % sizeof(u16)))
7855                 return -EINVAL;
7856
7857         params.n_counter_offsets_beacon = len / sizeof(u16);
7858         if (rdev->wiphy.max_num_csa_counters &&
7859             (params.n_counter_offsets_beacon >
7860              rdev->wiphy.max_num_csa_counters))
7861                 return -EINVAL;
7862
7863         params.counter_offsets_beacon =
7864                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7865
7866         /* sanity checks - counters should fit and be the same */
7867         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7868                 u16 offset = params.counter_offsets_beacon[i];
7869
7870                 if (offset >= params.beacon_csa.tail_len)
7871                         return -EINVAL;
7872
7873                 if (params.beacon_csa.tail[offset] != params.count)
7874                         return -EINVAL;
7875         }
7876
7877         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7878                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7879                 if (!len || (len % sizeof(u16)))
7880                         return -EINVAL;
7881
7882                 params.n_counter_offsets_presp = len / sizeof(u16);
7883                 if (rdev->wiphy.max_num_csa_counters &&
7884                     (params.n_counter_offsets_presp >
7885                      rdev->wiphy.max_num_csa_counters))
7886                         return -EINVAL;
7887
7888                 params.counter_offsets_presp =
7889                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7890
7891                 /* sanity checks - counters should fit and be the same */
7892                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7893                         u16 offset = params.counter_offsets_presp[i];
7894
7895                         if (offset >= params.beacon_csa.probe_resp_len)
7896                                 return -EINVAL;
7897
7898                         if (params.beacon_csa.probe_resp[offset] !=
7899                             params.count)
7900                                 return -EINVAL;
7901                 }
7902         }
7903
7904 skip_beacons:
7905         err = nl80211_parse_chandef(rdev, info, &params.chandef);
7906         if (err)
7907                 return err;
7908
7909         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7910                                            wdev->iftype))
7911                 return -EINVAL;
7912
7913         err = cfg80211_chandef_dfs_required(wdev->wiphy,
7914                                             &params.chandef,
7915                                             wdev->iftype);
7916         if (err < 0)
7917                 return err;
7918
7919         if (err > 0) {
7920                 params.radar_required = true;
7921                 if (need_handle_dfs_flag &&
7922                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
7923                         return -EINVAL;
7924                 }
7925         }
7926
7927         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7928                 params.block_tx = true;
7929
7930         wdev_lock(wdev);
7931         err = rdev_channel_switch(rdev, dev, &params);
7932         wdev_unlock(wdev);
7933
7934         return err;
7935 }
7936
7937 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7938                             u32 seq, int flags,
7939                             struct cfg80211_registered_device *rdev,
7940                             struct wireless_dev *wdev,
7941                             struct cfg80211_internal_bss *intbss)
7942 {
7943         struct cfg80211_bss *res = &intbss->pub;
7944         const struct cfg80211_bss_ies *ies;
7945         void *hdr;
7946         struct nlattr *bss;
7947
7948         ASSERT_WDEV_LOCK(wdev);
7949
7950         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7951                              NL80211_CMD_NEW_SCAN_RESULTS);
7952         if (!hdr)
7953                 return -1;
7954
7955         genl_dump_check_consistent(cb, hdr);
7956
7957         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7958                 goto nla_put_failure;
7959         if (wdev->netdev &&
7960             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7961                 goto nla_put_failure;
7962         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7963                               NL80211_ATTR_PAD))
7964                 goto nla_put_failure;
7965
7966         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7967         if (!bss)
7968                 goto nla_put_failure;
7969         if ((!is_zero_ether_addr(res->bssid) &&
7970              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7971                 goto nla_put_failure;
7972
7973         rcu_read_lock();
7974         /* indicate whether we have probe response data or not */
7975         if (rcu_access_pointer(res->proberesp_ies) &&
7976             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7977                 goto fail_unlock_rcu;
7978
7979         /* this pointer prefers to be pointed to probe response data
7980          * but is always valid
7981          */
7982         ies = rcu_dereference(res->ies);
7983         if (ies) {
7984                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7985                                       NL80211_BSS_PAD))
7986                         goto fail_unlock_rcu;
7987                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7988                                         ies->len, ies->data))
7989                         goto fail_unlock_rcu;
7990         }
7991
7992         /* and this pointer is always (unless driver didn't know) beacon data */
7993         ies = rcu_dereference(res->beacon_ies);
7994         if (ies && ies->from_beacon) {
7995                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7996                                       NL80211_BSS_PAD))
7997                         goto fail_unlock_rcu;
7998                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7999                                         ies->len, ies->data))
8000                         goto fail_unlock_rcu;
8001         }
8002         rcu_read_unlock();
8003
8004         if (res->beacon_interval &&
8005             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8006                 goto nla_put_failure;
8007         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8008             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8009             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8010             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8011                         jiffies_to_msecs(jiffies - intbss->ts)))
8012                 goto nla_put_failure;
8013
8014         if (intbss->parent_tsf &&
8015             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8016                                intbss->parent_tsf, NL80211_BSS_PAD) ||
8017              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8018                      intbss->parent_bssid)))
8019                 goto nla_put_failure;
8020
8021         if (intbss->ts_boottime &&
8022             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8023                               intbss->ts_boottime, NL80211_BSS_PAD))
8024                 goto nla_put_failure;
8025
8026         if (!nl80211_put_signal(msg, intbss->pub.chains,
8027                                 intbss->pub.chain_signal,
8028                                 NL80211_BSS_CHAIN_SIGNAL))
8029                 goto nla_put_failure;
8030
8031         switch (rdev->wiphy.signal_type) {
8032         case CFG80211_SIGNAL_TYPE_MBM:
8033                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8034                         goto nla_put_failure;
8035                 break;
8036         case CFG80211_SIGNAL_TYPE_UNSPEC:
8037                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8038                         goto nla_put_failure;
8039                 break;
8040         default:
8041                 break;
8042         }
8043
8044         switch (wdev->iftype) {
8045         case NL80211_IFTYPE_P2P_CLIENT:
8046         case NL80211_IFTYPE_STATION:
8047                 if (intbss == wdev->current_bss &&
8048                     nla_put_u32(msg, NL80211_BSS_STATUS,
8049                                 NL80211_BSS_STATUS_ASSOCIATED))
8050                         goto nla_put_failure;
8051                 break;
8052         case NL80211_IFTYPE_ADHOC:
8053                 if (intbss == wdev->current_bss &&
8054                     nla_put_u32(msg, NL80211_BSS_STATUS,
8055                                 NL80211_BSS_STATUS_IBSS_JOINED))
8056                         goto nla_put_failure;
8057                 break;
8058         default:
8059                 break;
8060         }
8061
8062         nla_nest_end(msg, bss);
8063
8064         genlmsg_end(msg, hdr);
8065         return 0;
8066
8067  fail_unlock_rcu:
8068         rcu_read_unlock();
8069  nla_put_failure:
8070         genlmsg_cancel(msg, hdr);
8071         return -EMSGSIZE;
8072 }
8073
8074 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8075 {
8076         struct cfg80211_registered_device *rdev;
8077         struct cfg80211_internal_bss *scan;
8078         struct wireless_dev *wdev;
8079         int start = cb->args[2], idx = 0;
8080         int err;
8081
8082         rtnl_lock();
8083         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
8084         if (err) {
8085                 rtnl_unlock();
8086                 return err;
8087         }
8088
8089         wdev_lock(wdev);
8090         spin_lock_bh(&rdev->bss_lock);
8091
8092         /*
8093          * dump_scan will be called multiple times to break up the scan results
8094          * into multiple messages.  It is unlikely that any more bss-es will be
8095          * expired after the first call, so only call only call this on the
8096          * first dump_scan invocation.
8097          */
8098         if (start == 0)
8099                 cfg80211_bss_expire(rdev);
8100
8101         cb->seq = rdev->bss_generation;
8102
8103         list_for_each_entry(scan, &rdev->bss_list, list) {
8104                 if (++idx <= start)
8105                         continue;
8106                 if (nl80211_send_bss(skb, cb,
8107                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8108                                 rdev, wdev, scan) < 0) {
8109                         idx--;
8110                         break;
8111                 }
8112         }
8113
8114         spin_unlock_bh(&rdev->bss_lock);
8115         wdev_unlock(wdev);
8116
8117         cb->args[2] = idx;
8118         rtnl_unlock();
8119
8120         return skb->len;
8121 }
8122
8123 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
8124                                int flags, struct net_device *dev,
8125                                bool allow_radio_stats,
8126                                struct survey_info *survey)
8127 {
8128         void *hdr;
8129         struct nlattr *infoattr;
8130
8131         /* skip radio stats if userspace didn't request them */
8132         if (!survey->channel && !allow_radio_stats)
8133                 return 0;
8134
8135         hdr = nl80211hdr_put(msg, portid, seq, flags,
8136                              NL80211_CMD_NEW_SURVEY_RESULTS);
8137         if (!hdr)
8138                 return -ENOMEM;
8139
8140         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
8141                 goto nla_put_failure;
8142
8143         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
8144         if (!infoattr)
8145                 goto nla_put_failure;
8146
8147         if (survey->channel &&
8148             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
8149                         survey->channel->center_freq))
8150                 goto nla_put_failure;
8151
8152         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
8153             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
8154                 goto nla_put_failure;
8155         if ((survey->filled & SURVEY_INFO_IN_USE) &&
8156             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
8157                 goto nla_put_failure;
8158         if ((survey->filled & SURVEY_INFO_TIME) &&
8159             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
8160                         survey->time, NL80211_SURVEY_INFO_PAD))
8161                 goto nla_put_failure;
8162         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
8163             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
8164                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
8165                 goto nla_put_failure;
8166         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
8167             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
8168                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
8169                 goto nla_put_failure;
8170         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
8171             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
8172                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
8173                 goto nla_put_failure;
8174         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
8175             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
8176                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
8177                 goto nla_put_failure;
8178         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
8179             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
8180                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
8181                 goto nla_put_failure;
8182
8183         nla_nest_end(msg, infoattr);
8184
8185         genlmsg_end(msg, hdr);
8186         return 0;
8187
8188  nla_put_failure:
8189         genlmsg_cancel(msg, hdr);
8190         return -EMSGSIZE;
8191 }
8192
8193 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
8194 {
8195         struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8196         struct survey_info survey;
8197         struct cfg80211_registered_device *rdev;
8198         struct wireless_dev *wdev;
8199         int survey_idx = cb->args[2];
8200         int res;
8201         bool radio_stats;
8202
8203         rtnl_lock();
8204         res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
8205         if (res)
8206                 goto out_err;
8207
8208         /* prepare_wdev_dump parsed the attributes */
8209         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
8210
8211         if (!wdev->netdev) {
8212                 res = -EINVAL;
8213                 goto out_err;
8214         }
8215
8216         if (!rdev->ops->dump_survey) {
8217                 res = -EOPNOTSUPP;
8218                 goto out_err;
8219         }
8220
8221         while (1) {
8222                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8223                 if (res == -ENOENT)
8224                         break;
8225                 if (res)
8226                         goto out_err;
8227
8228                 /* don't send disabled channels, but do send non-channel data */
8229                 if (survey.channel &&
8230                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8231                         survey_idx++;
8232                         continue;
8233                 }
8234
8235                 if (nl80211_send_survey(skb,
8236                                 NETLINK_CB(cb->skb).portid,
8237                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8238                                 wdev->netdev, radio_stats, &survey) < 0)
8239                         goto out;
8240                 survey_idx++;
8241         }
8242
8243  out:
8244         cb->args[2] = survey_idx;
8245         res = skb->len;
8246  out_err:
8247         rtnl_unlock();
8248         return res;
8249 }
8250
8251 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8252 {
8253         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8254                                   NL80211_WPA_VERSION_2));
8255 }
8256
8257 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8258 {
8259         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8260         struct net_device *dev = info->user_ptr[1];
8261         struct ieee80211_channel *chan;
8262         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8263         int err, ssid_len, ie_len = 0, auth_data_len = 0;
8264         enum nl80211_auth_type auth_type;
8265         struct key_parse key;
8266         bool local_state_change;
8267
8268         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8269                 return -EINVAL;
8270
8271         if (!info->attrs[NL80211_ATTR_MAC])
8272                 return -EINVAL;
8273
8274         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8275                 return -EINVAL;
8276
8277         if (!info->attrs[NL80211_ATTR_SSID])
8278                 return -EINVAL;
8279
8280         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8281                 return -EINVAL;
8282
8283         err = nl80211_parse_key(info, &key);
8284         if (err)
8285                 return err;
8286
8287         if (key.idx >= 0) {
8288                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8289                         return -EINVAL;
8290                 if (!key.p.key || !key.p.key_len)
8291                         return -EINVAL;
8292                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8293                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8294                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8295                      key.p.key_len != WLAN_KEY_LEN_WEP104))
8296                         return -EINVAL;
8297                 if (key.idx > 3)
8298                         return -EINVAL;
8299         } else {
8300                 key.p.key_len = 0;
8301                 key.p.key = NULL;
8302         }
8303
8304         if (key.idx >= 0) {
8305                 int i;
8306                 bool ok = false;
8307
8308                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8309                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8310                                 ok = true;
8311                                 break;
8312                         }
8313                 }
8314                 if (!ok)
8315                         return -EINVAL;
8316         }
8317
8318         if (!rdev->ops->auth)
8319                 return -EOPNOTSUPP;
8320
8321         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8322             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8323                 return -EOPNOTSUPP;
8324
8325         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8326         chan = nl80211_get_valid_chan(&rdev->wiphy,
8327                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8328         if (!chan)
8329                 return -EINVAL;
8330
8331         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8332         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8333
8334         if (info->attrs[NL80211_ATTR_IE]) {
8335                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8336                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8337         }
8338
8339         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8340         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8341                 return -EINVAL;
8342
8343         if ((auth_type == NL80211_AUTHTYPE_SAE ||
8344              auth_type == NL80211_AUTHTYPE_FILS_SK ||
8345              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8346              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8347             !info->attrs[NL80211_ATTR_AUTH_DATA])
8348                 return -EINVAL;
8349
8350         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8351                 if (auth_type != NL80211_AUTHTYPE_SAE &&
8352                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
8353                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8354                     auth_type != NL80211_AUTHTYPE_FILS_PK)
8355                         return -EINVAL;
8356                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8357                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8358                 /* need to include at least Auth Transaction and Status Code */
8359                 if (auth_data_len < 4)
8360                         return -EINVAL;
8361         }
8362
8363         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8364
8365         /*
8366          * Since we no longer track auth state, ignore
8367          * requests to only change local state.
8368          */
8369         if (local_state_change)
8370                 return 0;
8371
8372         wdev_lock(dev->ieee80211_ptr);
8373         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8374                                  ssid, ssid_len, ie, ie_len,
8375                                  key.p.key, key.p.key_len, key.idx,
8376                                  auth_data, auth_data_len);
8377         wdev_unlock(dev->ieee80211_ptr);
8378         return err;
8379 }
8380
8381 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
8382                                      struct genl_info *info)
8383 {
8384         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8385                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
8386                 return -EINVAL;
8387         }
8388
8389         if (!rdev->ops->tx_control_port ||
8390             !wiphy_ext_feature_isset(&rdev->wiphy,
8391                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
8392                 return -EOPNOTSUPP;
8393
8394         return 0;
8395 }
8396
8397 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8398                                    struct genl_info *info,
8399                                    struct cfg80211_crypto_settings *settings,
8400                                    int cipher_limit)
8401 {
8402         memset(settings, 0, sizeof(*settings));
8403
8404         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
8405
8406         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
8407                 u16 proto;
8408
8409                 proto = nla_get_u16(
8410                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
8411                 settings->control_port_ethertype = cpu_to_be16(proto);
8412                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
8413                     proto != ETH_P_PAE)
8414                         return -EINVAL;
8415                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
8416                         settings->control_port_no_encrypt = true;
8417         } else
8418                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
8419
8420         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
8421                 int r = validate_pae_over_nl80211(rdev, info);
8422
8423                 if (r < 0)
8424                         return r;
8425
8426                 settings->control_port_over_nl80211 = true;
8427         }
8428
8429         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
8430                 void *data;
8431                 int len, i;
8432
8433                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8434                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8435                 settings->n_ciphers_pairwise = len / sizeof(u32);
8436
8437                 if (len % sizeof(u32))
8438                         return -EINVAL;
8439
8440                 if (settings->n_ciphers_pairwise > cipher_limit)
8441                         return -EINVAL;
8442
8443                 memcpy(settings->ciphers_pairwise, data, len);
8444
8445                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
8446                         if (!cfg80211_supported_cipher_suite(
8447                                         &rdev->wiphy,
8448                                         settings->ciphers_pairwise[i]))
8449                                 return -EINVAL;
8450         }
8451
8452         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
8453                 settings->cipher_group =
8454                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
8455                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
8456                                                      settings->cipher_group))
8457                         return -EINVAL;
8458         }
8459
8460         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
8461                 settings->wpa_versions =
8462                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
8463                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
8464                         return -EINVAL;
8465         }
8466
8467         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
8468                 void *data;
8469                 int len;
8470
8471                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
8472                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
8473                 settings->n_akm_suites = len / sizeof(u32);
8474
8475                 if (len % sizeof(u32))
8476                         return -EINVAL;
8477
8478                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
8479                         return -EINVAL;
8480
8481                 memcpy(settings->akm_suites, data, len);
8482         }
8483
8484         if (info->attrs[NL80211_ATTR_PMK]) {
8485                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
8486                         return -EINVAL;
8487                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8488                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
8489                         return -EINVAL;
8490                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
8491         }
8492
8493         return 0;
8494 }
8495
8496 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
8497 {
8498         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8499         struct net_device *dev = info->user_ptr[1];
8500         struct ieee80211_channel *chan;
8501         struct cfg80211_assoc_request req = {};
8502         const u8 *bssid, *ssid;
8503         int err, ssid_len = 0;
8504
8505         if (dev->ieee80211_ptr->conn_owner_nlportid &&
8506             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8507                 return -EPERM;
8508
8509         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8510                 return -EINVAL;
8511
8512         if (!info->attrs[NL80211_ATTR_MAC] ||
8513             !info->attrs[NL80211_ATTR_SSID] ||
8514             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
8515                 return -EINVAL;
8516
8517         if (!rdev->ops->assoc)
8518                 return -EOPNOTSUPP;
8519
8520         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8521             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8522                 return -EOPNOTSUPP;
8523
8524         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8525
8526         chan = nl80211_get_valid_chan(&rdev->wiphy,
8527                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8528         if (!chan)
8529                 return -EINVAL;
8530
8531         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8532         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8533
8534         if (info->attrs[NL80211_ATTR_IE]) {
8535                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8536                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8537         }
8538
8539         if (info->attrs[NL80211_ATTR_USE_MFP]) {
8540                 enum nl80211_mfp mfp =
8541                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8542                 if (mfp == NL80211_MFP_REQUIRED)
8543                         req.use_mfp = true;
8544                 else if (mfp != NL80211_MFP_NO)
8545                         return -EINVAL;
8546         }
8547
8548         if (info->attrs[NL80211_ATTR_PREV_BSSID])
8549                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8550
8551         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8552                 req.flags |= ASSOC_REQ_DISABLE_HT;
8553
8554         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8555                 memcpy(&req.ht_capa_mask,
8556                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8557                        sizeof(req.ht_capa_mask));
8558
8559         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8560                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8561                         return -EINVAL;
8562                 memcpy(&req.ht_capa,
8563                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8564                        sizeof(req.ht_capa));
8565         }
8566
8567         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8568                 req.flags |= ASSOC_REQ_DISABLE_VHT;
8569
8570         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8571                 memcpy(&req.vht_capa_mask,
8572                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8573                        sizeof(req.vht_capa_mask));
8574
8575         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8576                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8577                         return -EINVAL;
8578                 memcpy(&req.vht_capa,
8579                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8580                        sizeof(req.vht_capa));
8581         }
8582
8583         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8584                 if (!((rdev->wiphy.features &
8585                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8586                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8587                     !wiphy_ext_feature_isset(&rdev->wiphy,
8588                                              NL80211_EXT_FEATURE_RRM))
8589                         return -EINVAL;
8590                 req.flags |= ASSOC_REQ_USE_RRM;
8591         }
8592
8593         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8594                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8595                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8596                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8597                         return -EINVAL;
8598                 req.fils_nonces =
8599                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8600         }
8601
8602         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8603         if (!err) {
8604                 wdev_lock(dev->ieee80211_ptr);
8605
8606                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8607                                           ssid, ssid_len, &req);
8608
8609                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8610                         dev->ieee80211_ptr->conn_owner_nlportid =
8611                                 info->snd_portid;
8612                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
8613                                bssid, ETH_ALEN);
8614                 }
8615
8616                 wdev_unlock(dev->ieee80211_ptr);
8617         }
8618
8619         return err;
8620 }
8621
8622 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8623 {
8624         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8625         struct net_device *dev = info->user_ptr[1];
8626         const u8 *ie = NULL, *bssid;
8627         int ie_len = 0, err;
8628         u16 reason_code;
8629         bool local_state_change;
8630
8631         if (dev->ieee80211_ptr->conn_owner_nlportid &&
8632             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8633                 return -EPERM;
8634
8635         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8636                 return -EINVAL;
8637
8638         if (!info->attrs[NL80211_ATTR_MAC])
8639                 return -EINVAL;
8640
8641         if (!info->attrs[NL80211_ATTR_REASON_CODE])
8642                 return -EINVAL;
8643
8644         if (!rdev->ops->deauth)
8645                 return -EOPNOTSUPP;
8646
8647         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8648             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8649                 return -EOPNOTSUPP;
8650
8651         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8652
8653         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8654         if (reason_code == 0) {
8655                 /* Reason Code 0 is reserved */
8656                 return -EINVAL;
8657         }
8658
8659         if (info->attrs[NL80211_ATTR_IE]) {
8660                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8661                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8662         }
8663
8664         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8665
8666         wdev_lock(dev->ieee80211_ptr);
8667         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8668                                    local_state_change);
8669         wdev_unlock(dev->ieee80211_ptr);
8670         return err;
8671 }
8672
8673 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8674 {
8675         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8676         struct net_device *dev = info->user_ptr[1];
8677         const u8 *ie = NULL, *bssid;
8678         int ie_len = 0, err;
8679         u16 reason_code;
8680         bool local_state_change;
8681
8682         if (dev->ieee80211_ptr->conn_owner_nlportid &&
8683             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
8684                 return -EPERM;
8685
8686         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8687                 return -EINVAL;
8688
8689         if (!info->attrs[NL80211_ATTR_MAC])
8690                 return -EINVAL;
8691
8692         if (!info->attrs[NL80211_ATTR_REASON_CODE])
8693                 return -EINVAL;
8694
8695         if (!rdev->ops->disassoc)
8696                 return -EOPNOTSUPP;
8697
8698         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8699             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8700                 return -EOPNOTSUPP;
8701
8702         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8703
8704         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8705         if (reason_code == 0) {
8706                 /* Reason Code 0 is reserved */
8707                 return -EINVAL;
8708         }
8709
8710         if (info->attrs[NL80211_ATTR_IE]) {
8711                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8712                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8713         }
8714
8715         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8716
8717         wdev_lock(dev->ieee80211_ptr);
8718         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8719                                      local_state_change);
8720         wdev_unlock(dev->ieee80211_ptr);
8721         return err;
8722 }
8723
8724 static bool
8725 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8726                          int mcast_rate[NUM_NL80211_BANDS],
8727                          int rateval)
8728 {
8729         struct wiphy *wiphy = &rdev->wiphy;
8730         bool found = false;
8731         int band, i;
8732
8733         for (band = 0; band < NUM_NL80211_BANDS; band++) {
8734                 struct ieee80211_supported_band *sband;
8735
8736                 sband = wiphy->bands[band];
8737                 if (!sband)
8738                         continue;
8739
8740                 for (i = 0; i < sband->n_bitrates; i++) {
8741                         if (sband->bitrates[i].bitrate == rateval) {
8742                                 mcast_rate[band] = i + 1;
8743                                 found = true;
8744                                 break;
8745                         }
8746                 }
8747         }
8748
8749         return found;
8750 }
8751
8752 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8753 {
8754         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8755         struct net_device *dev = info->user_ptr[1];
8756         struct cfg80211_ibss_params ibss;
8757         struct wiphy *wiphy;
8758         struct cfg80211_cached_keys *connkeys = NULL;
8759         int err;
8760
8761         memset(&ibss, 0, sizeof(ibss));
8762
8763         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8764                 return -EINVAL;
8765
8766         if (!info->attrs[NL80211_ATTR_SSID] ||
8767             !nla_len(info->attrs[NL80211_ATTR_SSID]))
8768                 return -EINVAL;
8769
8770         ibss.beacon_interval = 100;
8771
8772         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8773                 ibss.beacon_interval =
8774                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8775
8776         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8777                                            ibss.beacon_interval);
8778         if (err)
8779                 return err;
8780
8781         if (!rdev->ops->join_ibss)
8782                 return -EOPNOTSUPP;
8783
8784         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8785                 return -EOPNOTSUPP;
8786
8787         wiphy = &rdev->wiphy;
8788
8789         if (info->attrs[NL80211_ATTR_MAC]) {
8790                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8791
8792                 if (!is_valid_ether_addr(ibss.bssid))
8793                         return -EINVAL;
8794         }
8795         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8796         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8797
8798         if (info->attrs[NL80211_ATTR_IE]) {
8799                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8800                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8801         }
8802
8803         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8804         if (err)
8805                 return err;
8806
8807         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8808                                      NL80211_IFTYPE_ADHOC))
8809                 return -EINVAL;
8810
8811         switch (ibss.chandef.width) {
8812         case NL80211_CHAN_WIDTH_5:
8813         case NL80211_CHAN_WIDTH_10:
8814         case NL80211_CHAN_WIDTH_20_NOHT:
8815                 break;
8816         case NL80211_CHAN_WIDTH_20:
8817         case NL80211_CHAN_WIDTH_40:
8818                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8819                         return -EINVAL;
8820                 break;
8821         case NL80211_CHAN_WIDTH_80:
8822         case NL80211_CHAN_WIDTH_80P80:
8823         case NL80211_CHAN_WIDTH_160:
8824                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8825                         return -EINVAL;
8826                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8827                                              NL80211_EXT_FEATURE_VHT_IBSS))
8828                         return -EINVAL;
8829                 break;
8830         default:
8831                 return -EINVAL;
8832         }
8833
8834         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8835         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8836
8837         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8838                 u8 *rates =
8839                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8840                 int n_rates =
8841                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8842                 struct ieee80211_supported_band *sband =
8843                         wiphy->bands[ibss.chandef.chan->band];
8844
8845                 err = ieee80211_get_ratemask(sband, rates, n_rates,
8846                                              &ibss.basic_rates);
8847                 if (err)
8848                         return err;
8849         }
8850
8851         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8852                 memcpy(&ibss.ht_capa_mask,
8853                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8854                        sizeof(ibss.ht_capa_mask));
8855
8856         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8857                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8858                         return -EINVAL;
8859                 memcpy(&ibss.ht_capa,
8860                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8861                        sizeof(ibss.ht_capa));
8862         }
8863
8864         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8865             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8866                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8867                 return -EINVAL;
8868
8869         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8870                 bool no_ht = false;
8871
8872                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
8873                 if (IS_ERR(connkeys))
8874                         return PTR_ERR(connkeys);
8875
8876                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8877                     no_ht) {
8878                         kzfree(connkeys);
8879                         return -EINVAL;
8880                 }
8881         }
8882
8883         ibss.control_port =
8884                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8885
8886         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
8887                 int r = validate_pae_over_nl80211(rdev, info);
8888
8889                 if (r < 0)
8890                         return r;
8891
8892                 ibss.control_port_over_nl80211 = true;
8893         }
8894
8895         ibss.userspace_handles_dfs =
8896                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8897
8898         wdev_lock(dev->ieee80211_ptr);
8899         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8900         if (err)
8901                 kzfree(connkeys);
8902         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8903                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
8904         wdev_unlock(dev->ieee80211_ptr);
8905
8906         return err;
8907 }
8908
8909 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8910 {
8911         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8912         struct net_device *dev = info->user_ptr[1];
8913
8914         if (!rdev->ops->leave_ibss)
8915                 return -EOPNOTSUPP;
8916
8917         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8918                 return -EOPNOTSUPP;
8919
8920         return cfg80211_leave_ibss(rdev, dev, false);
8921 }
8922
8923 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8924 {
8925         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8926         struct net_device *dev = info->user_ptr[1];
8927         int mcast_rate[NUM_NL80211_BANDS];
8928         u32 nla_rate;
8929         int err;
8930
8931         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8932             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8933             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8934                 return -EOPNOTSUPP;
8935
8936         if (!rdev->ops->set_mcast_rate)
8937                 return -EOPNOTSUPP;
8938
8939         memset(mcast_rate, 0, sizeof(mcast_rate));
8940
8941         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8942                 return -EINVAL;
8943
8944         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8945         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8946                 return -EINVAL;
8947
8948         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8949
8950         return err;
8951 }
8952
8953 static struct sk_buff *
8954 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8955                             struct wireless_dev *wdev, int approxlen,
8956                             u32 portid, u32 seq, enum nl80211_commands cmd,
8957                             enum nl80211_attrs attr,
8958                             const struct nl80211_vendor_cmd_info *info,
8959                             gfp_t gfp)
8960 {
8961         struct sk_buff *skb;
8962         void *hdr;
8963         struct nlattr *data;
8964
8965         skb = nlmsg_new(approxlen + 100, gfp);
8966         if (!skb)
8967                 return NULL;
8968
8969         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8970         if (!hdr) {
8971                 kfree_skb(skb);
8972                 return NULL;
8973         }
8974
8975         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8976                 goto nla_put_failure;
8977
8978         if (info) {
8979                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8980                                 info->vendor_id))
8981                         goto nla_put_failure;
8982                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8983                                 info->subcmd))
8984                         goto nla_put_failure;
8985         }
8986
8987         if (wdev) {
8988                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8989                                       wdev_id(wdev), NL80211_ATTR_PAD))
8990                         goto nla_put_failure;
8991                 if (wdev->netdev &&
8992                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8993                                 wdev->netdev->ifindex))
8994                         goto nla_put_failure;
8995         }
8996
8997         data = nla_nest_start(skb, attr);
8998         if (!data)
8999                 goto nla_put_failure;
9000
9001         ((void **)skb->cb)[0] = rdev;
9002         ((void **)skb->cb)[1] = hdr;
9003         ((void **)skb->cb)[2] = data;
9004
9005         return skb;
9006
9007  nla_put_failure:
9008         kfree_skb(skb);
9009         return NULL;
9010 }
9011
9012 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9013                                            struct wireless_dev *wdev,
9014                                            enum nl80211_commands cmd,
9015                                            enum nl80211_attrs attr,
9016                                            int vendor_event_idx,
9017                                            int approxlen, gfp_t gfp)
9018 {
9019         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9020         const struct nl80211_vendor_cmd_info *info;
9021
9022         switch (cmd) {
9023         case NL80211_CMD_TESTMODE:
9024                 if (WARN_ON(vendor_event_idx != -1))
9025                         return NULL;
9026                 info = NULL;
9027                 break;
9028         case NL80211_CMD_VENDOR:
9029                 if (WARN_ON(vendor_event_idx < 0 ||
9030                             vendor_event_idx >= wiphy->n_vendor_events))
9031                         return NULL;
9032                 info = &wiphy->vendor_events[vendor_event_idx];
9033                 break;
9034         default:
9035                 WARN_ON(1);
9036                 return NULL;
9037         }
9038
9039         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
9040                                            cmd, attr, info, gfp);
9041 }
9042 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9043
9044 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9045 {
9046         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9047         void *hdr = ((void **)skb->cb)[1];
9048         struct nlattr *data = ((void **)skb->cb)[2];
9049         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9050
9051         /* clear CB data for netlink core to own from now on */
9052         memset(skb->cb, 0, sizeof(skb->cb));
9053
9054         nla_nest_end(skb, data);
9055         genlmsg_end(skb, hdr);
9056
9057         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9058                 mcgrp = NL80211_MCGRP_VENDOR;
9059
9060         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
9061                                 mcgrp, gfp);
9062 }
9063 EXPORT_SYMBOL(__cfg80211_send_event_skb);
9064
9065 #ifdef CONFIG_NL80211_TESTMODE
9066 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9067 {
9068         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9069         struct wireless_dev *wdev =
9070                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9071         int err;
9072
9073         if (!rdev->ops->testmode_cmd)
9074                 return -EOPNOTSUPP;
9075
9076         if (IS_ERR(wdev)) {
9077                 err = PTR_ERR(wdev);
9078                 if (err != -EINVAL)
9079                         return err;
9080                 wdev = NULL;
9081         } else if (wdev->wiphy != &rdev->wiphy) {
9082                 return -EINVAL;
9083         }
9084
9085         if (!info->attrs[NL80211_ATTR_TESTDATA])
9086                 return -EINVAL;
9087
9088         rdev->cur_cmd_info = info;
9089         err = rdev_testmode_cmd(rdev, wdev,
9090                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
9091                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
9092         rdev->cur_cmd_info = NULL;
9093
9094         return err;
9095 }
9096
9097 static int nl80211_testmode_dump(struct sk_buff *skb,
9098                                  struct netlink_callback *cb)
9099 {
9100         struct cfg80211_registered_device *rdev;
9101         int err;
9102         long phy_idx;
9103         void *data = NULL;
9104         int data_len = 0;
9105
9106         rtnl_lock();
9107
9108         if (cb->args[0]) {
9109                 /*
9110                  * 0 is a valid index, but not valid for args[0],
9111                  * so we need to offset by 1.
9112                  */
9113                 phy_idx = cb->args[0] - 1;
9114
9115                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
9116                 if (!rdev) {
9117                         err = -ENOENT;
9118                         goto out_err;
9119                 }
9120         } else {
9121                 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
9122
9123                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
9124                                   attrbuf, nl80211_fam.maxattr,
9125                                   nl80211_policy, NULL);
9126                 if (err)
9127                         goto out_err;
9128
9129                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
9130                 if (IS_ERR(rdev)) {
9131                         err = PTR_ERR(rdev);
9132                         goto out_err;
9133                 }
9134                 phy_idx = rdev->wiphy_idx;
9135
9136                 if (attrbuf[NL80211_ATTR_TESTDATA])
9137                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
9138         }
9139
9140         if (cb->args[1]) {
9141                 data = nla_data((void *)cb->args[1]);
9142                 data_len = nla_len((void *)cb->args[1]);
9143         }
9144
9145         if (!rdev->ops->testmode_dump) {
9146                 err = -EOPNOTSUPP;
9147                 goto out_err;
9148         }
9149
9150         while (1) {
9151                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
9152                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
9153                                            NL80211_CMD_TESTMODE);
9154                 struct nlattr *tmdata;
9155
9156                 if (!hdr)
9157                         break;
9158
9159                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
9160                         genlmsg_cancel(skb, hdr);
9161                         break;
9162                 }
9163
9164                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
9165                 if (!tmdata) {
9166                         genlmsg_cancel(skb, hdr);
9167                         break;
9168                 }
9169                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
9170                 nla_nest_end(skb, tmdata);
9171
9172                 if (err == -ENOBUFS || err == -ENOENT) {
9173                         genlmsg_cancel(skb, hdr);
9174                         break;
9175                 } else if (err) {
9176                         genlmsg_cancel(skb, hdr);
9177                         goto out_err;
9178                 }
9179
9180                 genlmsg_end(skb, hdr);
9181         }
9182
9183         err = skb->len;
9184         /* see above */
9185         cb->args[0] = phy_idx + 1;
9186  out_err:
9187         rtnl_unlock();
9188         return err;
9189 }
9190 #endif
9191
9192 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
9193 {
9194         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9195         struct net_device *dev = info->user_ptr[1];
9196         struct cfg80211_connect_params connect;
9197         struct wiphy *wiphy;
9198         struct cfg80211_cached_keys *connkeys = NULL;
9199         int err;
9200
9201         memset(&connect, 0, sizeof(connect));
9202
9203         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9204                 return -EINVAL;
9205
9206         if (!info->attrs[NL80211_ATTR_SSID] ||
9207             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9208                 return -EINVAL;
9209
9210         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9211                 connect.auth_type =
9212                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9213                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
9214                                              NL80211_CMD_CONNECT))
9215                         return -EINVAL;
9216         } else
9217                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
9218
9219         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
9220
9221         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
9222             !wiphy_ext_feature_isset(&rdev->wiphy,
9223                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
9224                 return -EINVAL;
9225         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
9226
9227         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
9228                                       NL80211_MAX_NR_CIPHER_SUITES);
9229         if (err)
9230                 return err;
9231
9232         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9233             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9234                 return -EOPNOTSUPP;
9235
9236         wiphy = &rdev->wiphy;
9237
9238         connect.bg_scan_period = -1;
9239         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
9240                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
9241                 connect.bg_scan_period =
9242                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
9243         }
9244
9245         if (info->attrs[NL80211_ATTR_MAC])
9246                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9247         else if (info->attrs[NL80211_ATTR_MAC_HINT])
9248                 connect.bssid_hint =
9249                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
9250         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9251         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9252
9253         if (info->attrs[NL80211_ATTR_IE]) {
9254                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9255                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9256         }
9257
9258         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9259                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9260                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
9261                     !wiphy_ext_feature_isset(&rdev->wiphy,
9262                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
9263                         return -EOPNOTSUPP;
9264
9265                 if (connect.mfp != NL80211_MFP_REQUIRED &&
9266                     connect.mfp != NL80211_MFP_NO &&
9267                     connect.mfp != NL80211_MFP_OPTIONAL)
9268                         return -EINVAL;
9269         } else {
9270                 connect.mfp = NL80211_MFP_NO;
9271         }
9272
9273         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9274                 connect.prev_bssid =
9275                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9276
9277         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9278                 connect.channel = nl80211_get_valid_chan(
9279                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9280                 if (!connect.channel)
9281                         return -EINVAL;
9282         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9283                 connect.channel_hint = nl80211_get_valid_chan(
9284                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9285                 if (!connect.channel_hint)
9286                         return -EINVAL;
9287         }
9288
9289         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9290                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
9291                 if (IS_ERR(connkeys))
9292                         return PTR_ERR(connkeys);
9293         }
9294
9295         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9296                 connect.flags |= ASSOC_REQ_DISABLE_HT;
9297
9298         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9299                 memcpy(&connect.ht_capa_mask,
9300                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9301                        sizeof(connect.ht_capa_mask));
9302
9303         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9304                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9305                         kzfree(connkeys);
9306                         return -EINVAL;
9307                 }
9308                 memcpy(&connect.ht_capa,
9309                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9310                        sizeof(connect.ht_capa));
9311         }
9312
9313         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9314                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
9315
9316         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9317                 memcpy(&connect.vht_capa_mask,
9318                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9319                        sizeof(connect.vht_capa_mask));
9320
9321         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9322                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
9323                         kzfree(connkeys);
9324                         return -EINVAL;
9325                 }
9326                 memcpy(&connect.vht_capa,
9327                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9328                        sizeof(connect.vht_capa));
9329         }
9330
9331         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9332                 if (!((rdev->wiphy.features &
9333                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9334                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9335                     !wiphy_ext_feature_isset(&rdev->wiphy,
9336                                              NL80211_EXT_FEATURE_RRM)) {
9337                         kzfree(connkeys);
9338                         return -EINVAL;
9339                 }
9340                 connect.flags |= ASSOC_REQ_USE_RRM;
9341         }
9342
9343         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9344         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9345                 kzfree(connkeys);
9346                 return -EOPNOTSUPP;
9347         }
9348
9349         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
9350                 /* bss selection makes no sense if bssid is set */
9351                 if (connect.bssid) {
9352                         kzfree(connkeys);
9353                         return -EINVAL;
9354                 }
9355
9356                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
9357                                        wiphy, &connect.bss_select);
9358                 if (err) {
9359                         kzfree(connkeys);
9360                         return err;
9361                 }
9362         }
9363
9364         if (wiphy_ext_feature_isset(&rdev->wiphy,
9365                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
9366             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9367             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9368             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9369             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9370                 connect.fils_erp_username =
9371                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9372                 connect.fils_erp_username_len =
9373                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9374                 connect.fils_erp_realm =
9375                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9376                 connect.fils_erp_realm_len =
9377                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9378                 connect.fils_erp_next_seq_num =
9379                         nla_get_u16(
9380                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9381                 connect.fils_erp_rrk =
9382                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9383                 connect.fils_erp_rrk_len =
9384                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9385         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9386                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9387                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9388                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9389                 kzfree(connkeys);
9390                 return -EINVAL;
9391         }
9392
9393         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
9394                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9395                         kzfree(connkeys);
9396                         GENL_SET_ERR_MSG(info,
9397                                          "external auth requires connection ownership");
9398                         return -EINVAL;
9399                 }
9400                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
9401         }
9402
9403         wdev_lock(dev->ieee80211_ptr);
9404
9405         err = cfg80211_connect(rdev, dev, &connect, connkeys,
9406                                connect.prev_bssid);
9407         if (err)
9408                 kzfree(connkeys);
9409
9410         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9411                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9412                 if (connect.bssid)
9413                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9414                                connect.bssid, ETH_ALEN);
9415                 else
9416                         memset(dev->ieee80211_ptr->disconnect_bssid,
9417                                0, ETH_ALEN);
9418         }
9419
9420         wdev_unlock(dev->ieee80211_ptr);
9421
9422         return err;
9423 }
9424
9425 static int nl80211_update_connect_params(struct sk_buff *skb,
9426                                          struct genl_info *info)
9427 {
9428         struct cfg80211_connect_params connect = {};
9429         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9430         struct net_device *dev = info->user_ptr[1];
9431         struct wireless_dev *wdev = dev->ieee80211_ptr;
9432         bool fils_sk_offload;
9433         u32 auth_type;
9434         u32 changed = 0;
9435         int ret;
9436
9437         if (!rdev->ops->update_connect_params)
9438                 return -EOPNOTSUPP;
9439
9440         if (info->attrs[NL80211_ATTR_IE]) {
9441                 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9442                         return -EINVAL;
9443                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9444                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9445                 changed |= UPDATE_ASSOC_IES;
9446         }
9447
9448         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
9449                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
9450
9451         /*
9452          * when driver supports fils-sk offload all attributes must be
9453          * provided. So the else covers "fils-sk-not-all" and
9454          * "no-fils-sk-any".
9455          */
9456         if (fils_sk_offload &&
9457             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9458             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9459             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9460             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9461                 connect.fils_erp_username =
9462                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9463                 connect.fils_erp_username_len =
9464                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9465                 connect.fils_erp_realm =
9466                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9467                 connect.fils_erp_realm_len =
9468                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9469                 connect.fils_erp_next_seq_num =
9470                         nla_get_u16(
9471                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9472                 connect.fils_erp_rrk =
9473                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9474                 connect.fils_erp_rrk_len =
9475                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9476                 changed |= UPDATE_FILS_ERP_INFO;
9477         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9478                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9479                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9480                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9481                 return -EINVAL;
9482         }
9483
9484         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9485                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9486                 if (!nl80211_valid_auth_type(rdev, auth_type,
9487                                              NL80211_CMD_CONNECT))
9488                         return -EINVAL;
9489
9490                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
9491                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
9492                         return -EINVAL;
9493
9494                 connect.auth_type = auth_type;
9495                 changed |= UPDATE_AUTH_TYPE;
9496         }
9497
9498         wdev_lock(dev->ieee80211_ptr);
9499         if (!wdev->current_bss)
9500                 ret = -ENOLINK;
9501         else
9502                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
9503         wdev_unlock(dev->ieee80211_ptr);
9504
9505         return ret;
9506 }
9507
9508 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
9509 {
9510         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9511         struct net_device *dev = info->user_ptr[1];
9512         u16 reason;
9513         int ret;
9514
9515         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9516             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9517                 return -EPERM;
9518
9519         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9520                 reason = WLAN_REASON_DEAUTH_LEAVING;
9521         else
9522                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9523
9524         if (reason == 0)
9525                 return -EINVAL;
9526
9527         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9528             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9529                 return -EOPNOTSUPP;
9530
9531         wdev_lock(dev->ieee80211_ptr);
9532         ret = cfg80211_disconnect(rdev, dev, reason, true);
9533         wdev_unlock(dev->ieee80211_ptr);
9534         return ret;
9535 }
9536
9537 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
9538 {
9539         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9540         struct net *net;
9541         int err;
9542
9543         if (info->attrs[NL80211_ATTR_PID]) {
9544                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
9545
9546                 net = get_net_ns_by_pid(pid);
9547         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
9548                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
9549
9550                 net = get_net_ns_by_fd(fd);
9551         } else {
9552                 return -EINVAL;
9553         }
9554
9555         if (IS_ERR(net))
9556                 return PTR_ERR(net);
9557
9558         err = 0;
9559
9560         /* check if anything to do */
9561         if (!net_eq(wiphy_net(&rdev->wiphy), net))
9562                 err = cfg80211_switch_netns(rdev, net);
9563
9564         put_net(net);
9565         return err;
9566 }
9567
9568 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
9569 {
9570         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9571         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
9572                         struct cfg80211_pmksa *pmksa) = NULL;
9573         struct net_device *dev = info->user_ptr[1];
9574         struct cfg80211_pmksa pmksa;
9575
9576         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
9577
9578         if (!info->attrs[NL80211_ATTR_PMKID])
9579                 return -EINVAL;
9580
9581         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
9582
9583         if (info->attrs[NL80211_ATTR_MAC]) {
9584                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9585         } else if (info->attrs[NL80211_ATTR_SSID] &&
9586                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
9587                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
9588                     info->attrs[NL80211_ATTR_PMK])) {
9589                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9590                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9591                 pmksa.cache_id =
9592                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
9593         } else {
9594                 return -EINVAL;
9595         }
9596         if (info->attrs[NL80211_ATTR_PMK]) {
9597                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9598                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
9599         }
9600
9601         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9602             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9603                 return -EOPNOTSUPP;
9604
9605         switch (info->genlhdr->cmd) {
9606         case NL80211_CMD_SET_PMKSA:
9607                 rdev_ops = rdev->ops->set_pmksa;
9608                 break;
9609         case NL80211_CMD_DEL_PMKSA:
9610                 rdev_ops = rdev->ops->del_pmksa;
9611                 break;
9612         default:
9613                 WARN_ON(1);
9614                 break;
9615         }
9616
9617         if (!rdev_ops)
9618                 return -EOPNOTSUPP;
9619
9620         return rdev_ops(&rdev->wiphy, dev, &pmksa);
9621 }
9622
9623 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
9624 {
9625         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9626         struct net_device *dev = info->user_ptr[1];
9627
9628         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9629             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9630                 return -EOPNOTSUPP;
9631
9632         if (!rdev->ops->flush_pmksa)
9633                 return -EOPNOTSUPP;
9634
9635         return rdev_flush_pmksa(rdev, dev);
9636 }
9637
9638 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
9639 {
9640         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9641         struct net_device *dev = info->user_ptr[1];
9642         u8 action_code, dialog_token;
9643         u32 peer_capability = 0;
9644         u16 status_code;
9645         u8 *peer;
9646         bool initiator;
9647
9648         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9649             !rdev->ops->tdls_mgmt)
9650                 return -EOPNOTSUPP;
9651
9652         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
9653             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
9654             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
9655             !info->attrs[NL80211_ATTR_IE] ||
9656             !info->attrs[NL80211_ATTR_MAC])
9657                 return -EINVAL;
9658
9659         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9660         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
9661         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
9662         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
9663         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
9664         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
9665                 peer_capability =
9666                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
9667
9668         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
9669                               dialog_token, status_code, peer_capability,
9670                               initiator,
9671                               nla_data(info->attrs[NL80211_ATTR_IE]),
9672                               nla_len(info->attrs[NL80211_ATTR_IE]));
9673 }
9674
9675 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
9676 {
9677         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9678         struct net_device *dev = info->user_ptr[1];
9679         enum nl80211_tdls_operation operation;
9680         u8 *peer;
9681
9682         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9683             !rdev->ops->tdls_oper)
9684                 return -EOPNOTSUPP;
9685
9686         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
9687             !info->attrs[NL80211_ATTR_MAC])
9688                 return -EINVAL;
9689
9690         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
9691         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9692
9693         return rdev_tdls_oper(rdev, dev, peer, operation);
9694 }
9695
9696 static int nl80211_remain_on_channel(struct sk_buff *skb,
9697                                      struct genl_info *info)
9698 {
9699         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9700         struct wireless_dev *wdev = info->user_ptr[1];
9701         struct cfg80211_chan_def chandef;
9702         const struct cfg80211_chan_def *compat_chandef;
9703         struct sk_buff *msg;
9704         void *hdr;
9705         u64 cookie;
9706         u32 duration;
9707         int err;
9708
9709         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9710             !info->attrs[NL80211_ATTR_DURATION])
9711                 return -EINVAL;
9712
9713         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9714
9715         if (!rdev->ops->remain_on_channel ||
9716             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9717                 return -EOPNOTSUPP;
9718
9719         /*
9720          * We should be on that channel for at least a minimum amount of
9721          * time (10ms) but no longer than the driver supports.
9722          */
9723         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9724             duration > rdev->wiphy.max_remain_on_channel_duration)
9725                 return -EINVAL;
9726
9727         err = nl80211_parse_chandef(rdev, info, &chandef);
9728         if (err)
9729                 return err;
9730
9731         wdev_lock(wdev);
9732         if (!cfg80211_off_channel_oper_allowed(wdev) &&
9733             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
9734                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
9735                                                              &chandef);
9736                 if (compat_chandef != &chandef) {
9737                         wdev_unlock(wdev);
9738                         return -EBUSY;
9739                 }
9740         }
9741         wdev_unlock(wdev);
9742
9743         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9744         if (!msg)
9745                 return -ENOMEM;
9746
9747         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9748                              NL80211_CMD_REMAIN_ON_CHANNEL);
9749         if (!hdr) {
9750                 err = -ENOBUFS;
9751                 goto free_msg;
9752         }
9753
9754         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9755                                      duration, &cookie);
9756
9757         if (err)
9758                 goto free_msg;
9759
9760         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9761                               NL80211_ATTR_PAD))
9762                 goto nla_put_failure;
9763
9764         genlmsg_end(msg, hdr);
9765
9766         return genlmsg_reply(msg, info);
9767
9768  nla_put_failure:
9769         err = -ENOBUFS;
9770  free_msg:
9771         nlmsg_free(msg);
9772         return err;
9773 }
9774
9775 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9776                                             struct genl_info *info)
9777 {
9778         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9779         struct wireless_dev *wdev = info->user_ptr[1];
9780         u64 cookie;
9781
9782         if (!info->attrs[NL80211_ATTR_COOKIE])
9783                 return -EINVAL;
9784
9785         if (!rdev->ops->cancel_remain_on_channel)
9786                 return -EOPNOTSUPP;
9787
9788         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9789
9790         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9791 }
9792
9793 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9794                                        struct genl_info *info)
9795 {
9796         struct cfg80211_bitrate_mask mask;
9797         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9798         struct net_device *dev = info->user_ptr[1];
9799         int err;
9800
9801         if (!rdev->ops->set_bitrate_mask)
9802                 return -EOPNOTSUPP;
9803
9804         err = nl80211_parse_tx_bitrate_mask(info, &mask);
9805         if (err)
9806                 return err;
9807
9808         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9809 }
9810
9811 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9812 {
9813         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9814         struct wireless_dev *wdev = info->user_ptr[1];
9815         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9816
9817         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9818                 return -EINVAL;
9819
9820         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9821                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9822
9823         switch (wdev->iftype) {
9824         case NL80211_IFTYPE_STATION:
9825         case NL80211_IFTYPE_ADHOC:
9826         case NL80211_IFTYPE_P2P_CLIENT:
9827         case NL80211_IFTYPE_AP:
9828         case NL80211_IFTYPE_AP_VLAN:
9829         case NL80211_IFTYPE_MESH_POINT:
9830         case NL80211_IFTYPE_P2P_GO:
9831         case NL80211_IFTYPE_P2P_DEVICE:
9832                 break;
9833         case NL80211_IFTYPE_NAN:
9834         default:
9835                 return -EOPNOTSUPP;
9836         }
9837
9838         /* not much point in registering if we can't reply */
9839         if (!rdev->ops->mgmt_tx)
9840                 return -EOPNOTSUPP;
9841
9842         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9843                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9844                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9845 }
9846
9847 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9848 {
9849         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9850         struct wireless_dev *wdev = info->user_ptr[1];
9851         struct cfg80211_chan_def chandef;
9852         int err;
9853         void *hdr = NULL;
9854         u64 cookie;
9855         struct sk_buff *msg = NULL;
9856         struct cfg80211_mgmt_tx_params params = {
9857                 .dont_wait_for_ack =
9858                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9859         };
9860
9861         if (!info->attrs[NL80211_ATTR_FRAME])
9862                 return -EINVAL;
9863
9864         if (!rdev->ops->mgmt_tx)
9865                 return -EOPNOTSUPP;
9866
9867         switch (wdev->iftype) {
9868         case NL80211_IFTYPE_P2P_DEVICE:
9869                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9870                         return -EINVAL;
9871         case NL80211_IFTYPE_STATION:
9872         case NL80211_IFTYPE_ADHOC:
9873         case NL80211_IFTYPE_P2P_CLIENT:
9874         case NL80211_IFTYPE_AP:
9875         case NL80211_IFTYPE_AP_VLAN:
9876         case NL80211_IFTYPE_MESH_POINT:
9877         case NL80211_IFTYPE_P2P_GO:
9878                 break;
9879         case NL80211_IFTYPE_NAN:
9880         default:
9881                 return -EOPNOTSUPP;
9882         }
9883
9884         if (info->attrs[NL80211_ATTR_DURATION]) {
9885                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9886                         return -EINVAL;
9887                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9888
9889                 /*
9890                  * We should wait on the channel for at least a minimum amount
9891                  * of time (10ms) but no longer than the driver supports.
9892                  */
9893                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9894                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
9895                         return -EINVAL;
9896         }
9897
9898         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9899
9900         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9901                 return -EINVAL;
9902
9903         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9904
9905         /* get the channel if any has been specified, otherwise pass NULL to
9906          * the driver. The latter will use the current one
9907          */
9908         chandef.chan = NULL;
9909         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9910                 err = nl80211_parse_chandef(rdev, info, &chandef);
9911                 if (err)
9912                         return err;
9913         }
9914
9915         if (!chandef.chan && params.offchan)
9916                 return -EINVAL;
9917
9918         wdev_lock(wdev);
9919         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
9920                 wdev_unlock(wdev);
9921                 return -EBUSY;
9922         }
9923         wdev_unlock(wdev);
9924
9925         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9926         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9927
9928         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9929                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9930                 int i;
9931
9932                 if (len % sizeof(u16))
9933                         return -EINVAL;
9934
9935                 params.n_csa_offsets = len / sizeof(u16);
9936                 params.csa_offsets =
9937                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9938
9939                 /* check that all the offsets fit the frame */
9940                 for (i = 0; i < params.n_csa_offsets; i++) {
9941                         if (params.csa_offsets[i] >= params.len)
9942                                 return -EINVAL;
9943                 }
9944         }
9945
9946         if (!params.dont_wait_for_ack) {
9947                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9948                 if (!msg)
9949                         return -ENOMEM;
9950
9951                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9952                                      NL80211_CMD_FRAME);
9953                 if (!hdr) {
9954                         err = -ENOBUFS;
9955                         goto free_msg;
9956                 }
9957         }
9958
9959         params.chan = chandef.chan;
9960         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9961         if (err)
9962                 goto free_msg;
9963
9964         if (msg) {
9965                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9966                                       NL80211_ATTR_PAD))
9967                         goto nla_put_failure;
9968
9969                 genlmsg_end(msg, hdr);
9970                 return genlmsg_reply(msg, info);
9971         }
9972
9973         return 0;
9974
9975  nla_put_failure:
9976         err = -ENOBUFS;
9977  free_msg:
9978         nlmsg_free(msg);
9979         return err;
9980 }
9981
9982 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9983 {
9984         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9985         struct wireless_dev *wdev = info->user_ptr[1];
9986         u64 cookie;
9987
9988         if (!info->attrs[NL80211_ATTR_COOKIE])
9989                 return -EINVAL;
9990
9991         if (!rdev->ops->mgmt_tx_cancel_wait)
9992                 return -EOPNOTSUPP;
9993
9994         switch (wdev->iftype) {
9995         case NL80211_IFTYPE_STATION:
9996         case NL80211_IFTYPE_ADHOC:
9997         case NL80211_IFTYPE_P2P_CLIENT:
9998         case NL80211_IFTYPE_AP:
9999         case NL80211_IFTYPE_AP_VLAN:
10000         case NL80211_IFTYPE_P2P_GO:
10001         case NL80211_IFTYPE_P2P_DEVICE:
10002                 break;
10003         case NL80211_IFTYPE_NAN:
10004         default:
10005                 return -EOPNOTSUPP;
10006         }
10007
10008         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10009
10010         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
10011 }
10012
10013 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
10014 {
10015         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10016         struct wireless_dev *wdev;
10017         struct net_device *dev = info->user_ptr[1];
10018         u8 ps_state;
10019         bool state;
10020         int err;
10021
10022         if (!info->attrs[NL80211_ATTR_PS_STATE])
10023                 return -EINVAL;
10024
10025         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
10026
10027         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
10028                 return -EINVAL;
10029
10030         wdev = dev->ieee80211_ptr;
10031
10032         if (!rdev->ops->set_power_mgmt)
10033                 return -EOPNOTSUPP;
10034
10035         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
10036
10037         if (state == wdev->ps)
10038                 return 0;
10039
10040         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
10041         if (!err)
10042                 wdev->ps = state;
10043         return err;
10044 }
10045
10046 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
10047 {
10048         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10049         enum nl80211_ps_state ps_state;
10050         struct wireless_dev *wdev;
10051         struct net_device *dev = info->user_ptr[1];
10052         struct sk_buff *msg;
10053         void *hdr;
10054         int err;
10055
10056         wdev = dev->ieee80211_ptr;
10057
10058         if (!rdev->ops->set_power_mgmt)
10059                 return -EOPNOTSUPP;
10060
10061         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10062         if (!msg)
10063                 return -ENOMEM;
10064
10065         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10066                              NL80211_CMD_GET_POWER_SAVE);
10067         if (!hdr) {
10068                 err = -ENOBUFS;
10069                 goto free_msg;
10070         }
10071
10072         if (wdev->ps)
10073                 ps_state = NL80211_PS_ENABLED;
10074         else
10075                 ps_state = NL80211_PS_DISABLED;
10076
10077         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
10078                 goto nla_put_failure;
10079
10080         genlmsg_end(msg, hdr);
10081         return genlmsg_reply(msg, info);
10082
10083  nla_put_failure:
10084         err = -ENOBUFS;
10085  free_msg:
10086         nlmsg_free(msg);
10087         return err;
10088 }
10089
10090 static const struct nla_policy
10091 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
10092         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
10093         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
10094         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
10095         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
10096         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
10097         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
10098         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
10099 };
10100
10101 static int nl80211_set_cqm_txe(struct genl_info *info,
10102                                u32 rate, u32 pkts, u32 intvl)
10103 {
10104         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10105         struct net_device *dev = info->user_ptr[1];
10106         struct wireless_dev *wdev = dev->ieee80211_ptr;
10107
10108         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
10109                 return -EINVAL;
10110
10111         if (!rdev->ops->set_cqm_txe_config)
10112                 return -EOPNOTSUPP;
10113
10114         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10115             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10116                 return -EOPNOTSUPP;
10117
10118         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
10119 }
10120
10121 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
10122                                     struct net_device *dev)
10123 {
10124         struct wireless_dev *wdev = dev->ieee80211_ptr;
10125         s32 last, low, high;
10126         u32 hyst;
10127         int i, n;
10128         int err;
10129
10130         /* RSSI reporting disabled? */
10131         if (!wdev->cqm_config)
10132                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
10133
10134         /*
10135          * Obtain current RSSI value if possible, if not and no RSSI threshold
10136          * event has been received yet, we should receive an event after a
10137          * connection is established and enough beacons received to calculate
10138          * the average.
10139          */
10140         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
10141             rdev->ops->get_station) {
10142                 struct station_info sinfo = {};
10143                 u8 *mac_addr;
10144
10145                 mac_addr = wdev->current_bss->pub.bssid;
10146
10147                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
10148                 if (err)
10149                         return err;
10150
10151                 if (sinfo.filled & BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
10152                         wdev->cqm_config->last_rssi_event_value =
10153                                 (s8) sinfo.rx_beacon_signal_avg;
10154         }
10155
10156         last = wdev->cqm_config->last_rssi_event_value;
10157         hyst = wdev->cqm_config->rssi_hyst;
10158         n = wdev->cqm_config->n_rssi_thresholds;
10159
10160         for (i = 0; i < n; i++)
10161                 if (last < wdev->cqm_config->rssi_thresholds[i])
10162                         break;
10163
10164         low = i > 0 ?
10165                 (wdev->cqm_config->rssi_thresholds[i - 1] - hyst) : S32_MIN;
10166         high = i < n ?
10167                 (wdev->cqm_config->rssi_thresholds[i] + hyst - 1) : S32_MAX;
10168
10169         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
10170 }
10171
10172 static int nl80211_set_cqm_rssi(struct genl_info *info,
10173                                 const s32 *thresholds, int n_thresholds,
10174                                 u32 hysteresis)
10175 {
10176         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10177         struct net_device *dev = info->user_ptr[1];
10178         struct wireless_dev *wdev = dev->ieee80211_ptr;
10179         int i, err;
10180         s32 prev = S32_MIN;
10181
10182         /* Check all values negative and sorted */
10183         for (i = 0; i < n_thresholds; i++) {
10184                 if (thresholds[i] > 0 || thresholds[i] <= prev)
10185                         return -EINVAL;
10186
10187                 prev = thresholds[i];
10188         }
10189
10190         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10191             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10192                 return -EOPNOTSUPP;
10193
10194         wdev_lock(wdev);
10195         cfg80211_cqm_config_free(wdev);
10196         wdev_unlock(wdev);
10197
10198         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
10199                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
10200                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
10201
10202                 return rdev_set_cqm_rssi_config(rdev, dev,
10203                                                 thresholds[0], hysteresis);
10204         }
10205
10206         if (!wiphy_ext_feature_isset(&rdev->wiphy,
10207                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
10208                 return -EOPNOTSUPP;
10209
10210         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
10211                 n_thresholds = 0;
10212
10213         wdev_lock(wdev);
10214         if (n_thresholds) {
10215                 struct cfg80211_cqm_config *cqm_config;
10216
10217                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
10218                                      n_thresholds * sizeof(s32), GFP_KERNEL);
10219                 if (!cqm_config) {
10220                         err = -ENOMEM;
10221                         goto unlock;
10222                 }
10223
10224                 cqm_config->rssi_hyst = hysteresis;
10225                 cqm_config->n_rssi_thresholds = n_thresholds;
10226                 memcpy(cqm_config->rssi_thresholds, thresholds,
10227                        n_thresholds * sizeof(s32));
10228
10229                 wdev->cqm_config = cqm_config;
10230         }
10231
10232         err = cfg80211_cqm_rssi_update(rdev, dev);
10233
10234 unlock:
10235         wdev_unlock(wdev);
10236
10237         return err;
10238 }
10239
10240 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
10241 {
10242         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
10243         struct nlattr *cqm;
10244         int err;
10245
10246         cqm = info->attrs[NL80211_ATTR_CQM];
10247         if (!cqm)
10248                 return -EINVAL;
10249
10250         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
10251                                nl80211_attr_cqm_policy, info->extack);
10252         if (err)
10253                 return err;
10254
10255         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
10256             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
10257                 const s32 *thresholds =
10258                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10259                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10260                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
10261
10262                 if (len % 4)
10263                         return -EINVAL;
10264
10265                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
10266                                             hysteresis);
10267         }
10268
10269         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
10270             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
10271             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
10272                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
10273                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
10274                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
10275
10276                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
10277         }
10278
10279         return -EINVAL;
10280 }
10281
10282 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
10283 {
10284         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10285         struct net_device *dev = info->user_ptr[1];
10286         struct ocb_setup setup = {};
10287         int err;
10288
10289         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10290         if (err)
10291                 return err;
10292
10293         return cfg80211_join_ocb(rdev, dev, &setup);
10294 }
10295
10296 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
10297 {
10298         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10299         struct net_device *dev = info->user_ptr[1];
10300
10301         return cfg80211_leave_ocb(rdev, dev);
10302 }
10303
10304 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
10305 {
10306         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10307         struct net_device *dev = info->user_ptr[1];
10308         struct mesh_config cfg;
10309         struct mesh_setup setup;
10310         int err;
10311
10312         /* start with default */
10313         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
10314         memcpy(&setup, &default_mesh_setup, sizeof(setup));
10315
10316         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
10317                 /* and parse parameters if given */
10318                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
10319                 if (err)
10320                         return err;
10321         }
10322
10323         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
10324             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
10325                 return -EINVAL;
10326
10327         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
10328         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
10329
10330         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10331             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
10332                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10333                         return -EINVAL;
10334
10335         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
10336                 setup.beacon_interval =
10337                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10338
10339                 err = cfg80211_validate_beacon_int(rdev,
10340                                                    NL80211_IFTYPE_MESH_POINT,
10341                                                    setup.beacon_interval);
10342                 if (err)
10343                         return err;
10344         }
10345
10346         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
10347                 setup.dtim_period =
10348                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
10349                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
10350                         return -EINVAL;
10351         }
10352
10353         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
10354                 /* parse additional setup parameters if given */
10355                 err = nl80211_parse_mesh_setup(info, &setup);
10356                 if (err)
10357                         return err;
10358         }
10359
10360         if (setup.user_mpm)
10361                 cfg.auto_open_plinks = false;
10362
10363         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10364                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10365                 if (err)
10366                         return err;
10367         } else {
10368                 /* __cfg80211_join_mesh() will sort it out */
10369                 setup.chandef.chan = NULL;
10370         }
10371
10372         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10373                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10374                 int n_rates =
10375                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10376                 struct ieee80211_supported_band *sband;
10377
10378                 if (!setup.chandef.chan)
10379                         return -EINVAL;
10380
10381                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
10382
10383                 err = ieee80211_get_ratemask(sband, rates, n_rates,
10384                                              &setup.basic_rates);
10385                 if (err)
10386                         return err;
10387         }
10388
10389         if (info->attrs[NL80211_ATTR_TX_RATES]) {
10390                 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
10391                 if (err)
10392                         return err;
10393
10394                 if (!setup.chandef.chan)
10395                         return -EINVAL;
10396
10397                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
10398                                               &setup.beacon_rate);
10399                 if (err)
10400                         return err;
10401         }
10402
10403         setup.userspace_handles_dfs =
10404                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10405
10406         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10407                 int r = validate_pae_over_nl80211(rdev, info);
10408
10409                 if (r < 0)
10410                         return r;
10411
10412                 setup.control_port_over_nl80211 = true;
10413         }
10414
10415         wdev_lock(dev->ieee80211_ptr);
10416         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
10417         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
10418                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10419         wdev_unlock(dev->ieee80211_ptr);
10420
10421         return err;
10422 }
10423
10424 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
10425 {
10426         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10427         struct net_device *dev = info->user_ptr[1];
10428
10429         return cfg80211_leave_mesh(rdev, dev);
10430 }
10431
10432 #ifdef CONFIG_PM
10433 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
10434                                         struct cfg80211_registered_device *rdev)
10435 {
10436         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
10437         struct nlattr *nl_pats, *nl_pat;
10438         int i, pat_len;
10439
10440         if (!wowlan->n_patterns)
10441                 return 0;
10442
10443         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
10444         if (!nl_pats)
10445                 return -ENOBUFS;
10446
10447         for (i = 0; i < wowlan->n_patterns; i++) {
10448                 nl_pat = nla_nest_start(msg, i + 1);
10449                 if (!nl_pat)
10450                         return -ENOBUFS;
10451                 pat_len = wowlan->patterns[i].pattern_len;
10452                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
10453                             wowlan->patterns[i].mask) ||
10454                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10455                             wowlan->patterns[i].pattern) ||
10456                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10457                                 wowlan->patterns[i].pkt_offset))
10458                         return -ENOBUFS;
10459                 nla_nest_end(msg, nl_pat);
10460         }
10461         nla_nest_end(msg, nl_pats);
10462
10463         return 0;
10464 }
10465
10466 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
10467                                    struct cfg80211_wowlan_tcp *tcp)
10468 {
10469         struct nlattr *nl_tcp;
10470
10471         if (!tcp)
10472                 return 0;
10473
10474         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
10475         if (!nl_tcp)
10476                 return -ENOBUFS;
10477
10478         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
10479             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
10480             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
10481             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
10482             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
10483             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
10484                     tcp->payload_len, tcp->payload) ||
10485             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
10486                         tcp->data_interval) ||
10487             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
10488                     tcp->wake_len, tcp->wake_data) ||
10489             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
10490                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
10491                 return -ENOBUFS;
10492
10493         if (tcp->payload_seq.len &&
10494             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
10495                     sizeof(tcp->payload_seq), &tcp->payload_seq))
10496                 return -ENOBUFS;
10497
10498         if (tcp->payload_tok.len &&
10499             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
10500                     sizeof(tcp->payload_tok) + tcp->tokens_size,
10501                     &tcp->payload_tok))
10502                 return -ENOBUFS;
10503
10504         nla_nest_end(msg, nl_tcp);
10505
10506         return 0;
10507 }
10508
10509 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
10510                                   struct cfg80211_sched_scan_request *req)
10511 {
10512         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
10513         int i;
10514
10515         if (!req)
10516                 return 0;
10517
10518         nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
10519         if (!nd)
10520                 return -ENOBUFS;
10521
10522         if (req->n_scan_plans == 1 &&
10523             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
10524                         req->scan_plans[0].interval * 1000))
10525                 return -ENOBUFS;
10526
10527         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
10528                 return -ENOBUFS;
10529
10530         if (req->relative_rssi_set) {
10531                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
10532
10533                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
10534                                req->relative_rssi))
10535                         return -ENOBUFS;
10536
10537                 rssi_adjust.band = req->rssi_adjust.band;
10538                 rssi_adjust.delta = req->rssi_adjust.delta;
10539                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
10540                             sizeof(rssi_adjust), &rssi_adjust))
10541                         return -ENOBUFS;
10542         }
10543
10544         freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10545         if (!freqs)
10546                 return -ENOBUFS;
10547
10548         for (i = 0; i < req->n_channels; i++) {
10549                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10550                         return -ENOBUFS;
10551         }
10552
10553         nla_nest_end(msg, freqs);
10554
10555         if (req->n_match_sets) {
10556                 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
10557                 if (!matches)
10558                         return -ENOBUFS;
10559
10560                 for (i = 0; i < req->n_match_sets; i++) {
10561                         match = nla_nest_start(msg, i);
10562                         if (!match)
10563                                 return -ENOBUFS;
10564
10565                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
10566                                     req->match_sets[i].ssid.ssid_len,
10567                                     req->match_sets[i].ssid.ssid))
10568                                 return -ENOBUFS;
10569                         nla_nest_end(msg, match);
10570                 }
10571                 nla_nest_end(msg, matches);
10572         }
10573
10574         scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
10575         if (!scan_plans)
10576                 return -ENOBUFS;
10577
10578         for (i = 0; i < req->n_scan_plans; i++) {
10579                 scan_plan = nla_nest_start(msg, i + 1);
10580                 if (!scan_plan)
10581                         return -ENOBUFS;
10582
10583                 if (!scan_plan ||
10584                     nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
10585                                 req->scan_plans[i].interval) ||
10586                     (req->scan_plans[i].iterations &&
10587                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
10588                                  req->scan_plans[i].iterations)))
10589                         return -ENOBUFS;
10590                 nla_nest_end(msg, scan_plan);
10591         }
10592         nla_nest_end(msg, scan_plans);
10593
10594         nla_nest_end(msg, nd);
10595
10596         return 0;
10597 }
10598
10599 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
10600 {
10601         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10602         struct sk_buff *msg;
10603         void *hdr;
10604         u32 size = NLMSG_DEFAULT_SIZE;
10605
10606         if (!rdev->wiphy.wowlan)
10607                 return -EOPNOTSUPP;
10608
10609         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
10610                 /* adjust size to have room for all the data */
10611                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
10612                         rdev->wiphy.wowlan_config->tcp->payload_len +
10613                         rdev->wiphy.wowlan_config->tcp->wake_len +
10614                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
10615         }
10616
10617         msg = nlmsg_new(size, GFP_KERNEL);
10618         if (!msg)
10619                 return -ENOMEM;
10620
10621         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10622                              NL80211_CMD_GET_WOWLAN);
10623         if (!hdr)
10624                 goto nla_put_failure;
10625
10626         if (rdev->wiphy.wowlan_config) {
10627                 struct nlattr *nl_wowlan;
10628
10629                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10630                 if (!nl_wowlan)
10631                         goto nla_put_failure;
10632
10633                 if ((rdev->wiphy.wowlan_config->any &&
10634                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
10635                     (rdev->wiphy.wowlan_config->disconnect &&
10636                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
10637                     (rdev->wiphy.wowlan_config->magic_pkt &&
10638                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
10639                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
10640                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
10641                     (rdev->wiphy.wowlan_config->eap_identity_req &&
10642                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
10643                     (rdev->wiphy.wowlan_config->four_way_handshake &&
10644                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
10645                     (rdev->wiphy.wowlan_config->rfkill_release &&
10646                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
10647                         goto nla_put_failure;
10648
10649                 if (nl80211_send_wowlan_patterns(msg, rdev))
10650                         goto nla_put_failure;
10651
10652                 if (nl80211_send_wowlan_tcp(msg,
10653                                             rdev->wiphy.wowlan_config->tcp))
10654                         goto nla_put_failure;
10655
10656                 if (nl80211_send_wowlan_nd(
10657                             msg,
10658                             rdev->wiphy.wowlan_config->nd_config))
10659                         goto nla_put_failure;
10660
10661                 nla_nest_end(msg, nl_wowlan);
10662         }
10663
10664         genlmsg_end(msg, hdr);
10665         return genlmsg_reply(msg, info);
10666
10667 nla_put_failure:
10668         nlmsg_free(msg);
10669         return -ENOBUFS;
10670 }
10671
10672 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
10673                                     struct nlattr *attr,
10674                                     struct cfg80211_wowlan *trig)
10675 {
10676         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
10677         struct cfg80211_wowlan_tcp *cfg;
10678         struct nl80211_wowlan_tcp_data_token *tok = NULL;
10679         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
10680         u32 size;
10681         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
10682         int err, port;
10683
10684         if (!rdev->wiphy.wowlan->tcp)
10685                 return -EINVAL;
10686
10687         err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
10688                                nl80211_wowlan_tcp_policy, NULL);
10689         if (err)
10690                 return err;
10691
10692         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
10693             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
10694             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
10695             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
10696             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
10697             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
10698             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
10699             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
10700                 return -EINVAL;
10701
10702         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
10703         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
10704                 return -EINVAL;
10705
10706         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
10707                         rdev->wiphy.wowlan->tcp->data_interval_max ||
10708             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
10709                 return -EINVAL;
10710
10711         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
10712         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
10713                 return -EINVAL;
10714
10715         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
10716         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
10717                 return -EINVAL;
10718
10719         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
10720                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10721
10722                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10723                 tokens_size = tokln - sizeof(*tok);
10724
10725                 if (!tok->len || tokens_size % tok->len)
10726                         return -EINVAL;
10727                 if (!rdev->wiphy.wowlan->tcp->tok)
10728                         return -EINVAL;
10729                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
10730                         return -EINVAL;
10731                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
10732                         return -EINVAL;
10733                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
10734                         return -EINVAL;
10735                 if (tok->offset + tok->len > data_size)
10736                         return -EINVAL;
10737         }
10738
10739         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
10740                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
10741                 if (!rdev->wiphy.wowlan->tcp->seq)
10742                         return -EINVAL;
10743                 if (seq->len == 0 || seq->len > 4)
10744                         return -EINVAL;
10745                 if (seq->len + seq->offset > data_size)
10746                         return -EINVAL;
10747         }
10748
10749         size = sizeof(*cfg);
10750         size += data_size;
10751         size += wake_size + wake_mask_size;
10752         size += tokens_size;
10753
10754         cfg = kzalloc(size, GFP_KERNEL);
10755         if (!cfg)
10756                 return -ENOMEM;
10757         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
10758         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
10759         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
10760                ETH_ALEN);
10761         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
10762                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
10763         else
10764                 port = 0;
10765 #ifdef CONFIG_INET
10766         /* allocate a socket and port for it and use it */
10767         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
10768                             IPPROTO_TCP, &cfg->sock, 1);
10769         if (err) {
10770                 kfree(cfg);
10771                 return err;
10772         }
10773         if (inet_csk_get_port(cfg->sock->sk, port)) {
10774                 sock_release(cfg->sock);
10775                 kfree(cfg);
10776                 return -EADDRINUSE;
10777         }
10778         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
10779 #else
10780         if (!port) {
10781                 kfree(cfg);
10782                 return -EINVAL;
10783         }
10784         cfg->src_port = port;
10785 #endif
10786
10787         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
10788         cfg->payload_len = data_size;
10789         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
10790         memcpy((void *)cfg->payload,
10791                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
10792                data_size);
10793         if (seq)
10794                 cfg->payload_seq = *seq;
10795         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
10796         cfg->wake_len = wake_size;
10797         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
10798         memcpy((void *)cfg->wake_data,
10799                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
10800                wake_size);
10801         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
10802                          data_size + wake_size;
10803         memcpy((void *)cfg->wake_mask,
10804                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
10805                wake_mask_size);
10806         if (tok) {
10807                 cfg->tokens_size = tokens_size;
10808                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
10809         }
10810
10811         trig->tcp = cfg;
10812
10813         return 0;
10814 }
10815
10816 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
10817                                    const struct wiphy_wowlan_support *wowlan,
10818                                    struct nlattr *attr,
10819                                    struct cfg80211_wowlan *trig)
10820 {
10821         struct nlattr **tb;
10822         int err;
10823
10824         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
10825         if (!tb)
10826                 return -ENOMEM;
10827
10828         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
10829                 err = -EOPNOTSUPP;
10830                 goto out;
10831         }
10832
10833         err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy,
10834                                NULL);
10835         if (err)
10836                 goto out;
10837
10838         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
10839                                                    wowlan->max_nd_match_sets);
10840         err = PTR_ERR_OR_ZERO(trig->nd_config);
10841         if (err)
10842                 trig->nd_config = NULL;
10843
10844 out:
10845         kfree(tb);
10846         return err;
10847 }
10848
10849 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
10850 {
10851         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10852         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
10853         struct cfg80211_wowlan new_triggers = {};
10854         struct cfg80211_wowlan *ntrig;
10855         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
10856         int err, i;
10857         bool prev_enabled = rdev->wiphy.wowlan_config;
10858         bool regular = false;
10859
10860         if (!wowlan)
10861                 return -EOPNOTSUPP;
10862
10863         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
10864                 cfg80211_rdev_free_wowlan(rdev);
10865                 rdev->wiphy.wowlan_config = NULL;
10866                 goto set_wakeup;
10867         }
10868
10869         err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10870                                info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10871                                nl80211_wowlan_policy, info->extack);
10872         if (err)
10873                 return err;
10874
10875         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10876                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10877                         return -EINVAL;
10878                 new_triggers.any = true;
10879         }
10880
10881         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10882                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10883                         return -EINVAL;
10884                 new_triggers.disconnect = true;
10885                 regular = true;
10886         }
10887
10888         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10889                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10890                         return -EINVAL;
10891                 new_triggers.magic_pkt = true;
10892                 regular = true;
10893         }
10894
10895         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10896                 return -EINVAL;
10897
10898         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10899                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10900                         return -EINVAL;
10901                 new_triggers.gtk_rekey_failure = true;
10902                 regular = true;
10903         }
10904
10905         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10906                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10907                         return -EINVAL;
10908                 new_triggers.eap_identity_req = true;
10909                 regular = true;
10910         }
10911
10912         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10913                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10914                         return -EINVAL;
10915                 new_triggers.four_way_handshake = true;
10916                 regular = true;
10917         }
10918
10919         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10920                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10921                         return -EINVAL;
10922                 new_triggers.rfkill_release = true;
10923                 regular = true;
10924         }
10925
10926         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10927                 struct nlattr *pat;
10928                 int n_patterns = 0;
10929                 int rem, pat_len, mask_len, pkt_offset;
10930                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10931
10932                 regular = true;
10933
10934                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10935                                     rem)
10936                         n_patterns++;
10937                 if (n_patterns > wowlan->n_patterns)
10938                         return -EINVAL;
10939
10940                 new_triggers.patterns = kcalloc(n_patterns,
10941                                                 sizeof(new_triggers.patterns[0]),
10942                                                 GFP_KERNEL);
10943                 if (!new_triggers.patterns)
10944                         return -ENOMEM;
10945
10946                 new_triggers.n_patterns = n_patterns;
10947                 i = 0;
10948
10949                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10950                                     rem) {
10951                         u8 *mask_pat;
10952
10953                         err = nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10954                                                nl80211_packet_pattern_policy,
10955                                                info->extack);
10956                         if (err)
10957                                 goto error;
10958
10959                         err = -EINVAL;
10960                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
10961                             !pat_tb[NL80211_PKTPAT_PATTERN])
10962                                 goto error;
10963                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10964                         mask_len = DIV_ROUND_UP(pat_len, 8);
10965                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10966                                 goto error;
10967                         if (pat_len > wowlan->pattern_max_len ||
10968                             pat_len < wowlan->pattern_min_len)
10969                                 goto error;
10970
10971                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
10972                                 pkt_offset = 0;
10973                         else
10974                                 pkt_offset = nla_get_u32(
10975                                         pat_tb[NL80211_PKTPAT_OFFSET]);
10976                         if (pkt_offset > wowlan->max_pkt_offset)
10977                                 goto error;
10978                         new_triggers.patterns[i].pkt_offset = pkt_offset;
10979
10980                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10981                         if (!mask_pat) {
10982                                 err = -ENOMEM;
10983                                 goto error;
10984                         }
10985                         new_triggers.patterns[i].mask = mask_pat;
10986                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10987                                mask_len);
10988                         mask_pat += mask_len;
10989                         new_triggers.patterns[i].pattern = mask_pat;
10990                         new_triggers.patterns[i].pattern_len = pat_len;
10991                         memcpy(mask_pat,
10992                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10993                                pat_len);
10994                         i++;
10995                 }
10996         }
10997
10998         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10999                 regular = true;
11000                 err = nl80211_parse_wowlan_tcp(
11001                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
11002                         &new_triggers);
11003                 if (err)
11004                         goto error;
11005         }
11006
11007         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
11008                 regular = true;
11009                 err = nl80211_parse_wowlan_nd(
11010                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
11011                         &new_triggers);
11012                 if (err)
11013                         goto error;
11014         }
11015
11016         /* The 'any' trigger means the device continues operating more or less
11017          * as in its normal operation mode and wakes up the host on most of the
11018          * normal interrupts (like packet RX, ...)
11019          * It therefore makes little sense to combine with the more constrained
11020          * wakeup trigger modes.
11021          */
11022         if (new_triggers.any && regular) {
11023                 err = -EINVAL;
11024                 goto error;
11025         }
11026
11027         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
11028         if (!ntrig) {
11029                 err = -ENOMEM;
11030                 goto error;
11031         }
11032         cfg80211_rdev_free_wowlan(rdev);
11033         rdev->wiphy.wowlan_config = ntrig;
11034
11035  set_wakeup:
11036         if (rdev->ops->set_wakeup &&
11037             prev_enabled != !!rdev->wiphy.wowlan_config)
11038                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
11039
11040         return 0;
11041  error:
11042         for (i = 0; i < new_triggers.n_patterns; i++)
11043                 kfree(new_triggers.patterns[i].mask);
11044         kfree(new_triggers.patterns);
11045         if (new_triggers.tcp && new_triggers.tcp->sock)
11046                 sock_release(new_triggers.tcp->sock);
11047         kfree(new_triggers.tcp);
11048         kfree(new_triggers.nd_config);
11049         return err;
11050 }
11051 #endif
11052
11053 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
11054                                        struct cfg80211_registered_device *rdev)
11055 {
11056         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
11057         int i, j, pat_len;
11058         struct cfg80211_coalesce_rules *rule;
11059
11060         if (!rdev->coalesce->n_rules)
11061                 return 0;
11062
11063         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
11064         if (!nl_rules)
11065                 return -ENOBUFS;
11066
11067         for (i = 0; i < rdev->coalesce->n_rules; i++) {
11068                 nl_rule = nla_nest_start(msg, i + 1);
11069                 if (!nl_rule)
11070                         return -ENOBUFS;
11071
11072                 rule = &rdev->coalesce->rules[i];
11073                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
11074                                 rule->delay))
11075                         return -ENOBUFS;
11076
11077                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
11078                                 rule->condition))
11079                         return -ENOBUFS;
11080
11081                 nl_pats = nla_nest_start(msg,
11082                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
11083                 if (!nl_pats)
11084                         return -ENOBUFS;
11085
11086                 for (j = 0; j < rule->n_patterns; j++) {
11087                         nl_pat = nla_nest_start(msg, j + 1);
11088                         if (!nl_pat)
11089                                 return -ENOBUFS;
11090                         pat_len = rule->patterns[j].pattern_len;
11091                         if (nla_put(msg, NL80211_PKTPAT_MASK,
11092                                     DIV_ROUND_UP(pat_len, 8),
11093                                     rule->patterns[j].mask) ||
11094                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11095                                     rule->patterns[j].pattern) ||
11096                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11097                                         rule->patterns[j].pkt_offset))
11098                                 return -ENOBUFS;
11099                         nla_nest_end(msg, nl_pat);
11100                 }
11101                 nla_nest_end(msg, nl_pats);
11102                 nla_nest_end(msg, nl_rule);
11103         }
11104         nla_nest_end(msg, nl_rules);
11105
11106         return 0;
11107 }
11108
11109 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
11110 {
11111         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11112         struct sk_buff *msg;
11113         void *hdr;
11114
11115         if (!rdev->wiphy.coalesce)
11116                 return -EOPNOTSUPP;
11117
11118         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11119         if (!msg)
11120                 return -ENOMEM;
11121
11122         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11123                              NL80211_CMD_GET_COALESCE);
11124         if (!hdr)
11125                 goto nla_put_failure;
11126
11127         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
11128                 goto nla_put_failure;
11129
11130         genlmsg_end(msg, hdr);
11131         return genlmsg_reply(msg, info);
11132
11133 nla_put_failure:
11134         nlmsg_free(msg);
11135         return -ENOBUFS;
11136 }
11137
11138 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
11139 {
11140         struct cfg80211_coalesce *coalesce = rdev->coalesce;
11141         int i, j;
11142         struct cfg80211_coalesce_rules *rule;
11143
11144         if (!coalesce)
11145                 return;
11146
11147         for (i = 0; i < coalesce->n_rules; i++) {
11148                 rule = &coalesce->rules[i];
11149                 for (j = 0; j < rule->n_patterns; j++)
11150                         kfree(rule->patterns[j].mask);
11151                 kfree(rule->patterns);
11152         }
11153         kfree(coalesce->rules);
11154         kfree(coalesce);
11155         rdev->coalesce = NULL;
11156 }
11157
11158 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
11159                                        struct nlattr *rule,
11160                                        struct cfg80211_coalesce_rules *new_rule)
11161 {
11162         int err, i;
11163         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11164         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
11165         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
11166         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11167
11168         err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
11169                                nl80211_coalesce_policy, NULL);
11170         if (err)
11171                 return err;
11172
11173         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
11174                 new_rule->delay =
11175                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
11176         if (new_rule->delay > coalesce->max_delay)
11177                 return -EINVAL;
11178
11179         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
11180                 new_rule->condition =
11181                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
11182         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
11183             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
11184                 return -EINVAL;
11185
11186         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
11187                 return -EINVAL;
11188
11189         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11190                             rem)
11191                 n_patterns++;
11192         if (n_patterns > coalesce->n_patterns)
11193                 return -EINVAL;
11194
11195         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
11196                                      GFP_KERNEL);
11197         if (!new_rule->patterns)
11198                 return -ENOMEM;
11199
11200         new_rule->n_patterns = n_patterns;
11201         i = 0;
11202
11203         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11204                             rem) {
11205                 u8 *mask_pat;
11206
11207                 err = nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
11208                                        nl80211_packet_pattern_policy, NULL);
11209                 if (err)
11210                         return err;
11211
11212                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
11213                     !pat_tb[NL80211_PKTPAT_PATTERN])
11214                         return -EINVAL;
11215                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11216                 mask_len = DIV_ROUND_UP(pat_len, 8);
11217                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11218                         return -EINVAL;
11219                 if (pat_len > coalesce->pattern_max_len ||
11220                     pat_len < coalesce->pattern_min_len)
11221                         return -EINVAL;
11222
11223                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
11224                         pkt_offset = 0;
11225                 else
11226                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
11227                 if (pkt_offset > coalesce->max_pkt_offset)
11228                         return -EINVAL;
11229                 new_rule->patterns[i].pkt_offset = pkt_offset;
11230
11231                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11232                 if (!mask_pat)
11233                         return -ENOMEM;
11234
11235                 new_rule->patterns[i].mask = mask_pat;
11236                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11237                        mask_len);
11238
11239                 mask_pat += mask_len;
11240                 new_rule->patterns[i].pattern = mask_pat;
11241                 new_rule->patterns[i].pattern_len = pat_len;
11242                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11243                        pat_len);
11244                 i++;
11245         }
11246
11247         return 0;
11248 }
11249
11250 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
11251 {
11252         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11253         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11254         struct cfg80211_coalesce new_coalesce = {};
11255         struct cfg80211_coalesce *n_coalesce;
11256         int err, rem_rule, n_rules = 0, i, j;
11257         struct nlattr *rule;
11258         struct cfg80211_coalesce_rules *tmp_rule;
11259
11260         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
11261                 return -EOPNOTSUPP;
11262
11263         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
11264                 cfg80211_rdev_free_coalesce(rdev);
11265                 rdev_set_coalesce(rdev, NULL);
11266                 return 0;
11267         }
11268
11269         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11270                             rem_rule)
11271                 n_rules++;
11272         if (n_rules > coalesce->n_rules)
11273                 return -EINVAL;
11274
11275         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
11276                                      GFP_KERNEL);
11277         if (!new_coalesce.rules)
11278                 return -ENOMEM;
11279
11280         new_coalesce.n_rules = n_rules;
11281         i = 0;
11282
11283         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11284                             rem_rule) {
11285                 err = nl80211_parse_coalesce_rule(rdev, rule,
11286                                                   &new_coalesce.rules[i]);
11287                 if (err)
11288                         goto error;
11289
11290                 i++;
11291         }
11292
11293         err = rdev_set_coalesce(rdev, &new_coalesce);
11294         if (err)
11295                 goto error;
11296
11297         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
11298         if (!n_coalesce) {
11299                 err = -ENOMEM;
11300                 goto error;
11301         }
11302         cfg80211_rdev_free_coalesce(rdev);
11303         rdev->coalesce = n_coalesce;
11304
11305         return 0;
11306 error:
11307         for (i = 0; i < new_coalesce.n_rules; i++) {
11308                 tmp_rule = &new_coalesce.rules[i];
11309                 for (j = 0; j < tmp_rule->n_patterns; j++)
11310                         kfree(tmp_rule->patterns[j].mask);
11311                 kfree(tmp_rule->patterns);
11312         }
11313         kfree(new_coalesce.rules);
11314
11315         return err;
11316 }
11317
11318 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
11319 {
11320         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11321         struct net_device *dev = info->user_ptr[1];
11322         struct wireless_dev *wdev = dev->ieee80211_ptr;
11323         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
11324         struct cfg80211_gtk_rekey_data rekey_data;
11325         int err;
11326
11327         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
11328                 return -EINVAL;
11329
11330         err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
11331                                info->attrs[NL80211_ATTR_REKEY_DATA],
11332                                nl80211_rekey_policy, info->extack);
11333         if (err)
11334                 return err;
11335
11336         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
11337             !tb[NL80211_REKEY_DATA_KCK])
11338                 return -EINVAL;
11339         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
11340                 return -ERANGE;
11341         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
11342                 return -ERANGE;
11343         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
11344                 return -ERANGE;
11345
11346         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
11347         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
11348         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
11349
11350         wdev_lock(wdev);
11351         if (!wdev->current_bss) {
11352                 err = -ENOTCONN;
11353                 goto out;
11354         }
11355
11356         if (!rdev->ops->set_rekey_data) {
11357                 err = -EOPNOTSUPP;
11358                 goto out;
11359         }
11360
11361         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
11362  out:
11363         wdev_unlock(wdev);
11364         return err;
11365 }
11366
11367 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
11368                                              struct genl_info *info)
11369 {
11370         struct net_device *dev = info->user_ptr[1];
11371         struct wireless_dev *wdev = dev->ieee80211_ptr;
11372
11373         if (wdev->iftype != NL80211_IFTYPE_AP &&
11374             wdev->iftype != NL80211_IFTYPE_P2P_GO)
11375                 return -EINVAL;
11376
11377         if (wdev->ap_unexpected_nlportid)
11378                 return -EBUSY;
11379
11380         wdev->ap_unexpected_nlportid = info->snd_portid;
11381         return 0;
11382 }
11383
11384 static int nl80211_probe_client(struct sk_buff *skb,
11385                                 struct genl_info *info)
11386 {
11387         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11388         struct net_device *dev = info->user_ptr[1];
11389         struct wireless_dev *wdev = dev->ieee80211_ptr;
11390         struct sk_buff *msg;
11391         void *hdr;
11392         const u8 *addr;
11393         u64 cookie;
11394         int err;
11395
11396         if (wdev->iftype != NL80211_IFTYPE_AP &&
11397             wdev->iftype != NL80211_IFTYPE_P2P_GO)
11398                 return -EOPNOTSUPP;
11399
11400         if (!info->attrs[NL80211_ATTR_MAC])
11401                 return -EINVAL;
11402
11403         if (!rdev->ops->probe_client)
11404                 return -EOPNOTSUPP;
11405
11406         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11407         if (!msg)
11408                 return -ENOMEM;
11409
11410         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11411                              NL80211_CMD_PROBE_CLIENT);
11412         if (!hdr) {
11413                 err = -ENOBUFS;
11414                 goto free_msg;
11415         }
11416
11417         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11418
11419         err = rdev_probe_client(rdev, dev, addr, &cookie);
11420         if (err)
11421                 goto free_msg;
11422
11423         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11424                               NL80211_ATTR_PAD))
11425                 goto nla_put_failure;
11426
11427         genlmsg_end(msg, hdr);
11428
11429         return genlmsg_reply(msg, info);
11430
11431  nla_put_failure:
11432         err = -ENOBUFS;
11433  free_msg:
11434         nlmsg_free(msg);
11435         return err;
11436 }
11437
11438 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
11439 {
11440         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11441         struct cfg80211_beacon_registration *reg, *nreg;
11442         int rv;
11443
11444         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
11445                 return -EOPNOTSUPP;
11446
11447         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
11448         if (!nreg)
11449                 return -ENOMEM;
11450
11451         /* First, check if already registered. */
11452         spin_lock_bh(&rdev->beacon_registrations_lock);
11453         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11454                 if (reg->nlportid == info->snd_portid) {
11455                         rv = -EALREADY;
11456                         goto out_err;
11457                 }
11458         }
11459         /* Add it to the list */
11460         nreg->nlportid = info->snd_portid;
11461         list_add(&nreg->list, &rdev->beacon_registrations);
11462
11463         spin_unlock_bh(&rdev->beacon_registrations_lock);
11464
11465         return 0;
11466 out_err:
11467         spin_unlock_bh(&rdev->beacon_registrations_lock);
11468         kfree(nreg);
11469         return rv;
11470 }
11471
11472 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
11473 {
11474         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11475         struct wireless_dev *wdev = info->user_ptr[1];
11476         int err;
11477
11478         if (!rdev->ops->start_p2p_device)
11479                 return -EOPNOTSUPP;
11480
11481         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11482                 return -EOPNOTSUPP;
11483
11484         if (wdev_running(wdev))
11485                 return 0;
11486
11487         if (rfkill_blocked(rdev->rfkill))
11488                 return -ERFKILL;
11489
11490         err = rdev_start_p2p_device(rdev, wdev);
11491         if (err)
11492                 return err;
11493
11494         wdev->is_running = true;
11495         rdev->opencount++;
11496
11497         return 0;
11498 }
11499
11500 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
11501 {
11502         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11503         struct wireless_dev *wdev = info->user_ptr[1];
11504
11505         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11506                 return -EOPNOTSUPP;
11507
11508         if (!rdev->ops->stop_p2p_device)
11509                 return -EOPNOTSUPP;
11510
11511         cfg80211_stop_p2p_device(rdev, wdev);
11512
11513         return 0;
11514 }
11515
11516 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
11517 {
11518         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11519         struct wireless_dev *wdev = info->user_ptr[1];
11520         struct cfg80211_nan_conf conf = {};
11521         int err;
11522
11523         if (wdev->iftype != NL80211_IFTYPE_NAN)
11524                 return -EOPNOTSUPP;
11525
11526         if (wdev_running(wdev))
11527                 return -EEXIST;
11528
11529         if (rfkill_blocked(rdev->rfkill))
11530                 return -ERFKILL;
11531
11532         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
11533                 return -EINVAL;
11534
11535         conf.master_pref =
11536                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11537         if (!conf.master_pref)
11538                 return -EINVAL;
11539
11540         if (info->attrs[NL80211_ATTR_BANDS]) {
11541                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11542
11543                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11544                         return -EOPNOTSUPP;
11545
11546                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11547                         return -EINVAL;
11548
11549                 conf.bands = bands;
11550         }
11551
11552         err = rdev_start_nan(rdev, wdev, &conf);
11553         if (err)
11554                 return err;
11555
11556         wdev->is_running = true;
11557         rdev->opencount++;
11558
11559         return 0;
11560 }
11561
11562 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
11563 {
11564         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11565         struct wireless_dev *wdev = info->user_ptr[1];
11566
11567         if (wdev->iftype != NL80211_IFTYPE_NAN)
11568                 return -EOPNOTSUPP;
11569
11570         cfg80211_stop_nan(rdev, wdev);
11571
11572         return 0;
11573 }
11574
11575 static int validate_nan_filter(struct nlattr *filter_attr)
11576 {
11577         struct nlattr *attr;
11578         int len = 0, n_entries = 0, rem;
11579
11580         nla_for_each_nested(attr, filter_attr, rem) {
11581                 len += nla_len(attr);
11582                 n_entries++;
11583         }
11584
11585         if (len >= U8_MAX)
11586                 return -EINVAL;
11587
11588         return n_entries;
11589 }
11590
11591 static int handle_nan_filter(struct nlattr *attr_filter,
11592                              struct cfg80211_nan_func *func,
11593                              bool tx)
11594 {
11595         struct nlattr *attr;
11596         int n_entries, rem, i;
11597         struct cfg80211_nan_func_filter *filter;
11598
11599         n_entries = validate_nan_filter(attr_filter);
11600         if (n_entries < 0)
11601                 return n_entries;
11602
11603         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
11604
11605         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
11606         if (!filter)
11607                 return -ENOMEM;
11608
11609         i = 0;
11610         nla_for_each_nested(attr, attr_filter, rem) {
11611                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
11612                 filter[i].len = nla_len(attr);
11613                 i++;
11614         }
11615         if (tx) {
11616                 func->num_tx_filters = n_entries;
11617                 func->tx_filters = filter;
11618         } else {
11619                 func->num_rx_filters = n_entries;
11620                 func->rx_filters = filter;
11621         }
11622
11623         return 0;
11624 }
11625
11626 static int nl80211_nan_add_func(struct sk_buff *skb,
11627                                 struct genl_info *info)
11628 {
11629         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11630         struct wireless_dev *wdev = info->user_ptr[1];
11631         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
11632         struct cfg80211_nan_func *func;
11633         struct sk_buff *msg = NULL;
11634         void *hdr = NULL;
11635         int err = 0;
11636
11637         if (wdev->iftype != NL80211_IFTYPE_NAN)
11638                 return -EOPNOTSUPP;
11639
11640         if (!wdev_running(wdev))
11641                 return -ENOTCONN;
11642
11643         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
11644                 return -EINVAL;
11645
11646         err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
11647                                info->attrs[NL80211_ATTR_NAN_FUNC],
11648                                nl80211_nan_func_policy, info->extack);
11649         if (err)
11650                 return err;
11651
11652         func = kzalloc(sizeof(*func), GFP_KERNEL);
11653         if (!func)
11654                 return -ENOMEM;
11655
11656         func->cookie = wdev->wiphy->cookie_counter++;
11657
11658         if (!tb[NL80211_NAN_FUNC_TYPE] ||
11659             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
11660                 err = -EINVAL;
11661                 goto out;
11662         }
11663
11664
11665         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
11666
11667         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
11668                 err = -EINVAL;
11669                 goto out;
11670         }
11671
11672         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
11673                sizeof(func->service_id));
11674
11675         func->close_range =
11676                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
11677
11678         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
11679                 func->serv_spec_info_len =
11680                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
11681                 func->serv_spec_info =
11682                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
11683                                 func->serv_spec_info_len,
11684                                 GFP_KERNEL);
11685                 if (!func->serv_spec_info) {
11686                         err = -ENOMEM;
11687                         goto out;
11688                 }
11689         }
11690
11691         if (tb[NL80211_NAN_FUNC_TTL])
11692                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
11693
11694         switch (func->type) {
11695         case NL80211_NAN_FUNC_PUBLISH:
11696                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
11697                         err = -EINVAL;
11698                         goto out;
11699                 }
11700
11701                 func->publish_type =
11702                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
11703                 func->publish_bcast =
11704                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
11705
11706                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
11707                         func->publish_bcast) {
11708                         err = -EINVAL;
11709                         goto out;
11710                 }
11711                 break;
11712         case NL80211_NAN_FUNC_SUBSCRIBE:
11713                 func->subscribe_active =
11714                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
11715                 break;
11716         case NL80211_NAN_FUNC_FOLLOW_UP:
11717                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
11718                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
11719                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
11720                         err = -EINVAL;
11721                         goto out;
11722                 }
11723
11724                 func->followup_id =
11725                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
11726                 func->followup_reqid =
11727                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
11728                 memcpy(func->followup_dest.addr,
11729                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
11730                        sizeof(func->followup_dest.addr));
11731                 if (func->ttl) {
11732                         err = -EINVAL;
11733                         goto out;
11734                 }
11735                 break;
11736         default:
11737                 err = -EINVAL;
11738                 goto out;
11739         }
11740
11741         if (tb[NL80211_NAN_FUNC_SRF]) {
11742                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
11743
11744                 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
11745                                        tb[NL80211_NAN_FUNC_SRF],
11746                                        nl80211_nan_srf_policy, info->extack);
11747                 if (err)
11748                         goto out;
11749
11750                 func->srf_include =
11751                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
11752
11753                 if (srf_tb[NL80211_NAN_SRF_BF]) {
11754                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
11755                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
11756                                 err = -EINVAL;
11757                                 goto out;
11758                         }
11759
11760                         func->srf_bf_len =
11761                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
11762                         func->srf_bf =
11763                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
11764                                         func->srf_bf_len, GFP_KERNEL);
11765                         if (!func->srf_bf) {
11766                                 err = -ENOMEM;
11767                                 goto out;
11768                         }
11769
11770                         func->srf_bf_idx =
11771                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
11772                 } else {
11773                         struct nlattr *attr, *mac_attr =
11774                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
11775                         int n_entries, rem, i = 0;
11776
11777                         if (!mac_attr) {
11778                                 err = -EINVAL;
11779                                 goto out;
11780                         }
11781
11782                         n_entries = validate_acl_mac_addrs(mac_attr);
11783                         if (n_entries <= 0) {
11784                                 err = -EINVAL;
11785                                 goto out;
11786                         }
11787
11788                         func->srf_num_macs = n_entries;
11789                         func->srf_macs =
11790                                 kcalloc(n_entries, sizeof(*func->srf_macs),
11791                                         GFP_KERNEL);
11792                         if (!func->srf_macs) {
11793                                 err = -ENOMEM;
11794                                 goto out;
11795                         }
11796
11797                         nla_for_each_nested(attr, mac_attr, rem)
11798                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
11799                                        sizeof(*func->srf_macs));
11800                 }
11801         }
11802
11803         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
11804                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
11805                                         func, true);
11806                 if (err)
11807                         goto out;
11808         }
11809
11810         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
11811                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
11812                                         func, false);
11813                 if (err)
11814                         goto out;
11815         }
11816
11817         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11818         if (!msg) {
11819                 err = -ENOMEM;
11820                 goto out;
11821         }
11822
11823         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11824                              NL80211_CMD_ADD_NAN_FUNCTION);
11825         /* This can't really happen - we just allocated 4KB */
11826         if (WARN_ON(!hdr)) {
11827                 err = -ENOMEM;
11828                 goto out;
11829         }
11830
11831         err = rdev_add_nan_func(rdev, wdev, func);
11832 out:
11833         if (err < 0) {
11834                 cfg80211_free_nan_func(func);
11835                 nlmsg_free(msg);
11836                 return err;
11837         }
11838
11839         /* propagate the instance id and cookie to userspace  */
11840         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
11841                               NL80211_ATTR_PAD))
11842                 goto nla_put_failure;
11843
11844         func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11845         if (!func_attr)
11846                 goto nla_put_failure;
11847
11848         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
11849                        func->instance_id))
11850                 goto nla_put_failure;
11851
11852         nla_nest_end(msg, func_attr);
11853
11854         genlmsg_end(msg, hdr);
11855         return genlmsg_reply(msg, info);
11856
11857 nla_put_failure:
11858         nlmsg_free(msg);
11859         return -ENOBUFS;
11860 }
11861
11862 static int nl80211_nan_del_func(struct sk_buff *skb,
11863                                struct genl_info *info)
11864 {
11865         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11866         struct wireless_dev *wdev = info->user_ptr[1];
11867         u64 cookie;
11868
11869         if (wdev->iftype != NL80211_IFTYPE_NAN)
11870                 return -EOPNOTSUPP;
11871
11872         if (!wdev_running(wdev))
11873                 return -ENOTCONN;
11874
11875         if (!info->attrs[NL80211_ATTR_COOKIE])
11876                 return -EINVAL;
11877
11878         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11879
11880         rdev_del_nan_func(rdev, wdev, cookie);
11881
11882         return 0;
11883 }
11884
11885 static int nl80211_nan_change_config(struct sk_buff *skb,
11886                                      struct genl_info *info)
11887 {
11888         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11889         struct wireless_dev *wdev = info->user_ptr[1];
11890         struct cfg80211_nan_conf conf = {};
11891         u32 changed = 0;
11892
11893         if (wdev->iftype != NL80211_IFTYPE_NAN)
11894                 return -EOPNOTSUPP;
11895
11896         if (!wdev_running(wdev))
11897                 return -ENOTCONN;
11898
11899         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11900                 conf.master_pref =
11901                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11902                 if (conf.master_pref <= 1 || conf.master_pref == 255)
11903                         return -EINVAL;
11904
11905                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11906         }
11907
11908         if (info->attrs[NL80211_ATTR_BANDS]) {
11909                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11910
11911                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11912                         return -EOPNOTSUPP;
11913
11914                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11915                         return -EINVAL;
11916
11917                 conf.bands = bands;
11918                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
11919         }
11920
11921         if (!changed)
11922                 return -EINVAL;
11923
11924         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11925 }
11926
11927 void cfg80211_nan_match(struct wireless_dev *wdev,
11928                         struct cfg80211_nan_match_params *match, gfp_t gfp)
11929 {
11930         struct wiphy *wiphy = wdev->wiphy;
11931         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11932         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11933         struct sk_buff *msg;
11934         void *hdr;
11935
11936         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11937                 return;
11938
11939         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11940         if (!msg)
11941                 return;
11942
11943         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11944         if (!hdr) {
11945                 nlmsg_free(msg);
11946                 return;
11947         }
11948
11949         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11950             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11951                                          wdev->netdev->ifindex)) ||
11952             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11953                               NL80211_ATTR_PAD))
11954                 goto nla_put_failure;
11955
11956         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11957                               NL80211_ATTR_PAD) ||
11958             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11959                 goto nla_put_failure;
11960
11961         match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11962         if (!match_attr)
11963                 goto nla_put_failure;
11964
11965         local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11966         if (!local_func_attr)
11967                 goto nla_put_failure;
11968
11969         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11970                 goto nla_put_failure;
11971
11972         nla_nest_end(msg, local_func_attr);
11973
11974         peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11975         if (!peer_func_attr)
11976                 goto nla_put_failure;
11977
11978         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11979             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11980                 goto nla_put_failure;
11981
11982         if (match->info && match->info_len &&
11983             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11984                     match->info))
11985                 goto nla_put_failure;
11986
11987         nla_nest_end(msg, peer_func_attr);
11988         nla_nest_end(msg, match_attr);
11989         genlmsg_end(msg, hdr);
11990
11991         if (!wdev->owner_nlportid)
11992                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11993                                         msg, 0, NL80211_MCGRP_NAN, gfp);
11994         else
11995                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11996                                 wdev->owner_nlportid);
11997
11998         return;
11999
12000 nla_put_failure:
12001         nlmsg_free(msg);
12002 }
12003 EXPORT_SYMBOL(cfg80211_nan_match);
12004
12005 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
12006                                   u8 inst_id,
12007                                   enum nl80211_nan_func_term_reason reason,
12008                                   u64 cookie, gfp_t gfp)
12009 {
12010         struct wiphy *wiphy = wdev->wiphy;
12011         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12012         struct sk_buff *msg;
12013         struct nlattr *func_attr;
12014         void *hdr;
12015
12016         if (WARN_ON(!inst_id))
12017                 return;
12018
12019         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12020         if (!msg)
12021                 return;
12022
12023         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
12024         if (!hdr) {
12025                 nlmsg_free(msg);
12026                 return;
12027         }
12028
12029         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12030             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12031                                          wdev->netdev->ifindex)) ||
12032             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12033                               NL80211_ATTR_PAD))
12034                 goto nla_put_failure;
12035
12036         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12037                               NL80211_ATTR_PAD))
12038                 goto nla_put_failure;
12039
12040         func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
12041         if (!func_attr)
12042                 goto nla_put_failure;
12043
12044         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
12045             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
12046                 goto nla_put_failure;
12047
12048         nla_nest_end(msg, func_attr);
12049         genlmsg_end(msg, hdr);
12050
12051         if (!wdev->owner_nlportid)
12052                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12053                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12054         else
12055                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12056                                 wdev->owner_nlportid);
12057
12058         return;
12059
12060 nla_put_failure:
12061         nlmsg_free(msg);
12062 }
12063 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
12064
12065 static int nl80211_get_protocol_features(struct sk_buff *skb,
12066                                          struct genl_info *info)
12067 {
12068         void *hdr;
12069         struct sk_buff *msg;
12070
12071         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12072         if (!msg)
12073                 return -ENOMEM;
12074
12075         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12076                              NL80211_CMD_GET_PROTOCOL_FEATURES);
12077         if (!hdr)
12078                 goto nla_put_failure;
12079
12080         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
12081                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
12082                 goto nla_put_failure;
12083
12084         genlmsg_end(msg, hdr);
12085         return genlmsg_reply(msg, info);
12086
12087  nla_put_failure:
12088         kfree_skb(msg);
12089         return -ENOBUFS;
12090 }
12091
12092 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
12093 {
12094         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12095         struct cfg80211_update_ft_ies_params ft_params;
12096         struct net_device *dev = info->user_ptr[1];
12097
12098         if (!rdev->ops->update_ft_ies)
12099                 return -EOPNOTSUPP;
12100
12101         if (!info->attrs[NL80211_ATTR_MDID] ||
12102             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
12103                 return -EINVAL;
12104
12105         memset(&ft_params, 0, sizeof(ft_params));
12106         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
12107         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12108         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12109
12110         return rdev_update_ft_ies(rdev, dev, &ft_params);
12111 }
12112
12113 static int nl80211_crit_protocol_start(struct sk_buff *skb,
12114                                        struct genl_info *info)
12115 {
12116         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12117         struct wireless_dev *wdev = info->user_ptr[1];
12118         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
12119         u16 duration;
12120         int ret;
12121
12122         if (!rdev->ops->crit_proto_start)
12123                 return -EOPNOTSUPP;
12124
12125         if (WARN_ON(!rdev->ops->crit_proto_stop))
12126                 return -EINVAL;
12127
12128         if (rdev->crit_proto_nlportid)
12129                 return -EBUSY;
12130
12131         /* determine protocol if provided */
12132         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
12133                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
12134
12135         if (proto >= NUM_NL80211_CRIT_PROTO)
12136                 return -EINVAL;
12137
12138         /* timeout must be provided */
12139         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
12140                 return -EINVAL;
12141
12142         duration =
12143                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
12144
12145         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
12146                 return -ERANGE;
12147
12148         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
12149         if (!ret)
12150                 rdev->crit_proto_nlportid = info->snd_portid;
12151
12152         return ret;
12153 }
12154
12155 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
12156                                       struct genl_info *info)
12157 {
12158         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12159         struct wireless_dev *wdev = info->user_ptr[1];
12160
12161         if (!rdev->ops->crit_proto_stop)
12162                 return -EOPNOTSUPP;
12163
12164         if (rdev->crit_proto_nlportid) {
12165                 rdev->crit_proto_nlportid = 0;
12166                 rdev_crit_proto_stop(rdev, wdev);
12167         }
12168         return 0;
12169 }
12170
12171 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
12172 {
12173         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12174         struct wireless_dev *wdev =
12175                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
12176         int i, err;
12177         u32 vid, subcmd;
12178
12179         if (!rdev->wiphy.vendor_commands)
12180                 return -EOPNOTSUPP;
12181
12182         if (IS_ERR(wdev)) {
12183                 err = PTR_ERR(wdev);
12184                 if (err != -EINVAL)
12185                         return err;
12186                 wdev = NULL;
12187         } else if (wdev->wiphy != &rdev->wiphy) {
12188                 return -EINVAL;
12189         }
12190
12191         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
12192             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
12193                 return -EINVAL;
12194
12195         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
12196         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
12197         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
12198                 const struct wiphy_vendor_command *vcmd;
12199                 void *data = NULL;
12200                 int len = 0;
12201
12202                 vcmd = &rdev->wiphy.vendor_commands[i];
12203
12204                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12205                         continue;
12206
12207                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12208                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12209                         if (!wdev)
12210                                 return -EINVAL;
12211                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12212                             !wdev->netdev)
12213                                 return -EINVAL;
12214
12215                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12216                                 if (!wdev_running(wdev))
12217                                         return -ENETDOWN;
12218                         }
12219
12220                         if (!vcmd->doit)
12221                                 return -EOPNOTSUPP;
12222                 } else {
12223                         wdev = NULL;
12224                 }
12225
12226                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
12227                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12228                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12229                 }
12230
12231                 rdev->cur_cmd_info = info;
12232                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
12233                                                           data, len);
12234                 rdev->cur_cmd_info = NULL;
12235                 return err;
12236         }
12237
12238         return -EOPNOTSUPP;
12239 }
12240
12241 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
12242                                        struct netlink_callback *cb,
12243                                        struct cfg80211_registered_device **rdev,
12244                                        struct wireless_dev **wdev)
12245 {
12246         struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
12247         u32 vid, subcmd;
12248         unsigned int i;
12249         int vcmd_idx = -1;
12250         int err;
12251         void *data = NULL;
12252         unsigned int data_len = 0;
12253
12254         if (cb->args[0]) {
12255                 /* subtract the 1 again here */
12256                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
12257                 struct wireless_dev *tmp;
12258
12259                 if (!wiphy)
12260                         return -ENODEV;
12261                 *rdev = wiphy_to_rdev(wiphy);
12262                 *wdev = NULL;
12263
12264                 if (cb->args[1]) {
12265                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
12266                                 if (tmp->identifier == cb->args[1] - 1) {
12267                                         *wdev = tmp;
12268                                         break;
12269                                 }
12270                         }
12271                 }
12272
12273                 /* keep rtnl locked in successful case */
12274                 return 0;
12275         }
12276
12277         err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf,
12278                           nl80211_fam.maxattr, nl80211_policy, NULL);
12279         if (err)
12280                 return err;
12281
12282         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
12283             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
12284                 return -EINVAL;
12285
12286         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
12287         if (IS_ERR(*wdev))
12288                 *wdev = NULL;
12289
12290         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
12291         if (IS_ERR(*rdev))
12292                 return PTR_ERR(*rdev);
12293
12294         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
12295         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
12296
12297         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
12298                 const struct wiphy_vendor_command *vcmd;
12299
12300                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
12301
12302                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12303                         continue;
12304
12305                 if (!vcmd->dumpit)
12306                         return -EOPNOTSUPP;
12307
12308                 vcmd_idx = i;
12309                 break;
12310         }
12311
12312         if (vcmd_idx < 0)
12313                 return -EOPNOTSUPP;
12314
12315         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
12316                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12317                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12318         }
12319
12320         /* 0 is the first index - add 1 to parse only once */
12321         cb->args[0] = (*rdev)->wiphy_idx + 1;
12322         /* add 1 to know if it was NULL */
12323         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
12324         cb->args[2] = vcmd_idx;
12325         cb->args[3] = (unsigned long)data;
12326         cb->args[4] = data_len;
12327
12328         /* keep rtnl locked in successful case */
12329         return 0;
12330 }
12331
12332 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
12333                                    struct netlink_callback *cb)
12334 {
12335         struct cfg80211_registered_device *rdev;
12336         struct wireless_dev *wdev;
12337         unsigned int vcmd_idx;
12338         const struct wiphy_vendor_command *vcmd;
12339         void *data;
12340         int data_len;
12341         int err;
12342         struct nlattr *vendor_data;
12343
12344         rtnl_lock();
12345         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
12346         if (err)
12347                 goto out;
12348
12349         vcmd_idx = cb->args[2];
12350         data = (void *)cb->args[3];
12351         data_len = cb->args[4];
12352         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
12353
12354         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12355                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12356                 if (!wdev) {
12357                         err = -EINVAL;
12358                         goto out;
12359                 }
12360                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12361                     !wdev->netdev) {
12362                         err = -EINVAL;
12363                         goto out;
12364                 }
12365
12366                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12367                         if (!wdev_running(wdev)) {
12368                                 err = -ENETDOWN;
12369                                 goto out;
12370                         }
12371                 }
12372         }
12373
12374         while (1) {
12375                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
12376                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
12377                                            NL80211_CMD_VENDOR);
12378                 if (!hdr)
12379                         break;
12380
12381                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12382                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
12383                                                wdev_id(wdev),
12384                                                NL80211_ATTR_PAD))) {
12385                         genlmsg_cancel(skb, hdr);
12386                         break;
12387                 }
12388
12389                 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
12390                 if (!vendor_data) {
12391                         genlmsg_cancel(skb, hdr);
12392                         break;
12393                 }
12394
12395                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
12396                                    (unsigned long *)&cb->args[5]);
12397                 nla_nest_end(skb, vendor_data);
12398
12399                 if (err == -ENOBUFS || err == -ENOENT) {
12400                         genlmsg_cancel(skb, hdr);
12401                         break;
12402                 } else if (err) {
12403                         genlmsg_cancel(skb, hdr);
12404                         goto out;
12405                 }
12406
12407                 genlmsg_end(skb, hdr);
12408         }
12409
12410         err = skb->len;
12411  out:
12412         rtnl_unlock();
12413         return err;
12414 }
12415
12416 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
12417                                            enum nl80211_commands cmd,
12418                                            enum nl80211_attrs attr,
12419                                            int approxlen)
12420 {
12421         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12422
12423         if (WARN_ON(!rdev->cur_cmd_info))
12424                 return NULL;
12425
12426         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
12427                                            rdev->cur_cmd_info->snd_portid,
12428                                            rdev->cur_cmd_info->snd_seq,
12429                                            cmd, attr, NULL, GFP_KERNEL);
12430 }
12431 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
12432
12433 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
12434 {
12435         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
12436         void *hdr = ((void **)skb->cb)[1];
12437         struct nlattr *data = ((void **)skb->cb)[2];
12438
12439         /* clear CB data for netlink core to own from now on */
12440         memset(skb->cb, 0, sizeof(skb->cb));
12441
12442         if (WARN_ON(!rdev->cur_cmd_info)) {
12443                 kfree_skb(skb);
12444                 return -EINVAL;
12445         }
12446
12447         nla_nest_end(skb, data);
12448         genlmsg_end(skb, hdr);
12449         return genlmsg_reply(skb, rdev->cur_cmd_info);
12450 }
12451 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
12452
12453 static int nl80211_set_qos_map(struct sk_buff *skb,
12454                                struct genl_info *info)
12455 {
12456         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12457         struct cfg80211_qos_map *qos_map = NULL;
12458         struct net_device *dev = info->user_ptr[1];
12459         u8 *pos, len, num_des, des_len, des;
12460         int ret;
12461
12462         if (!rdev->ops->set_qos_map)
12463                 return -EOPNOTSUPP;
12464
12465         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
12466                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
12467                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
12468
12469                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
12470                     len > IEEE80211_QOS_MAP_LEN_MAX)
12471                         return -EINVAL;
12472
12473                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
12474                 if (!qos_map)
12475                         return -ENOMEM;
12476
12477                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
12478                 if (num_des) {
12479                         des_len = num_des *
12480                                 sizeof(struct cfg80211_dscp_exception);
12481                         memcpy(qos_map->dscp_exception, pos, des_len);
12482                         qos_map->num_des = num_des;
12483                         for (des = 0; des < num_des; des++) {
12484                                 if (qos_map->dscp_exception[des].up > 7) {
12485                                         kfree(qos_map);
12486                                         return -EINVAL;
12487                                 }
12488                         }
12489                         pos += des_len;
12490                 }
12491                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
12492         }
12493
12494         wdev_lock(dev->ieee80211_ptr);
12495         ret = nl80211_key_allowed(dev->ieee80211_ptr);
12496         if (!ret)
12497                 ret = rdev_set_qos_map(rdev, dev, qos_map);
12498         wdev_unlock(dev->ieee80211_ptr);
12499
12500         kfree(qos_map);
12501         return ret;
12502 }
12503
12504 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
12505 {
12506         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12507         struct net_device *dev = info->user_ptr[1];
12508         struct wireless_dev *wdev = dev->ieee80211_ptr;
12509         const u8 *peer;
12510         u8 tsid, up;
12511         u16 admitted_time = 0;
12512         int err;
12513
12514         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
12515                 return -EOPNOTSUPP;
12516
12517         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
12518             !info->attrs[NL80211_ATTR_USER_PRIO])
12519                 return -EINVAL;
12520
12521         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12522         if (tsid >= IEEE80211_NUM_TIDS)
12523                 return -EINVAL;
12524
12525         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
12526         if (up >= IEEE80211_NUM_UPS)
12527                 return -EINVAL;
12528
12529         /* WMM uses TIDs 0-7 even for TSPEC */
12530         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
12531                 /* TODO: handle 802.11 TSPEC/admission control
12532                  * need more attributes for that (e.g. BA session requirement);
12533                  * change the WMM adminssion test above to allow both then
12534                  */
12535                 return -EINVAL;
12536         }
12537
12538         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12539
12540         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
12541                 admitted_time =
12542                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
12543                 if (!admitted_time)
12544                         return -EINVAL;
12545         }
12546
12547         wdev_lock(wdev);
12548         switch (wdev->iftype) {
12549         case NL80211_IFTYPE_STATION:
12550         case NL80211_IFTYPE_P2P_CLIENT:
12551                 if (wdev->current_bss)
12552                         break;
12553                 err = -ENOTCONN;
12554                 goto out;
12555         default:
12556                 err = -EOPNOTSUPP;
12557                 goto out;
12558         }
12559
12560         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
12561
12562  out:
12563         wdev_unlock(wdev);
12564         return err;
12565 }
12566
12567 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
12568 {
12569         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12570         struct net_device *dev = info->user_ptr[1];
12571         struct wireless_dev *wdev = dev->ieee80211_ptr;
12572         const u8 *peer;
12573         u8 tsid;
12574         int err;
12575
12576         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
12577                 return -EINVAL;
12578
12579         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12580         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12581
12582         wdev_lock(wdev);
12583         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
12584         wdev_unlock(wdev);
12585
12586         return err;
12587 }
12588
12589 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
12590                                        struct genl_info *info)
12591 {
12592         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12593         struct net_device *dev = info->user_ptr[1];
12594         struct wireless_dev *wdev = dev->ieee80211_ptr;
12595         struct cfg80211_chan_def chandef = {};
12596         const u8 *addr;
12597         u8 oper_class;
12598         int err;
12599
12600         if (!rdev->ops->tdls_channel_switch ||
12601             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12602                 return -EOPNOTSUPP;
12603
12604         switch (dev->ieee80211_ptr->iftype) {
12605         case NL80211_IFTYPE_STATION:
12606         case NL80211_IFTYPE_P2P_CLIENT:
12607                 break;
12608         default:
12609                 return -EOPNOTSUPP;
12610         }
12611
12612         if (!info->attrs[NL80211_ATTR_MAC] ||
12613             !info->attrs[NL80211_ATTR_OPER_CLASS])
12614                 return -EINVAL;
12615
12616         err = nl80211_parse_chandef(rdev, info, &chandef);
12617         if (err)
12618                 return err;
12619
12620         /*
12621          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
12622          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
12623          * specification is not defined for them.
12624          */
12625         if (chandef.chan->band == NL80211_BAND_2GHZ &&
12626             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
12627             chandef.width != NL80211_CHAN_WIDTH_20)
12628                 return -EINVAL;
12629
12630         /* we will be active on the TDLS link */
12631         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
12632                                            wdev->iftype))
12633                 return -EINVAL;
12634
12635         /* don't allow switching to DFS channels */
12636         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
12637                 return -EINVAL;
12638
12639         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12640         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
12641
12642         wdev_lock(wdev);
12643         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
12644         wdev_unlock(wdev);
12645
12646         return err;
12647 }
12648
12649 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
12650                                               struct genl_info *info)
12651 {
12652         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12653         struct net_device *dev = info->user_ptr[1];
12654         struct wireless_dev *wdev = dev->ieee80211_ptr;
12655         const u8 *addr;
12656
12657         if (!rdev->ops->tdls_channel_switch ||
12658             !rdev->ops->tdls_cancel_channel_switch ||
12659             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12660                 return -EOPNOTSUPP;
12661
12662         switch (dev->ieee80211_ptr->iftype) {
12663         case NL80211_IFTYPE_STATION:
12664         case NL80211_IFTYPE_P2P_CLIENT:
12665                 break;
12666         default:
12667                 return -EOPNOTSUPP;
12668         }
12669
12670         if (!info->attrs[NL80211_ATTR_MAC])
12671                 return -EINVAL;
12672
12673         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12674
12675         wdev_lock(wdev);
12676         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
12677         wdev_unlock(wdev);
12678
12679         return 0;
12680 }
12681
12682 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
12683                                             struct genl_info *info)
12684 {
12685         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12686         struct net_device *dev = info->user_ptr[1];
12687         struct wireless_dev *wdev = dev->ieee80211_ptr;
12688         const struct nlattr *nla;
12689         bool enabled;
12690
12691         if (!rdev->ops->set_multicast_to_unicast)
12692                 return -EOPNOTSUPP;
12693
12694         if (wdev->iftype != NL80211_IFTYPE_AP &&
12695             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12696                 return -EOPNOTSUPP;
12697
12698         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
12699         enabled = nla_get_flag(nla);
12700
12701         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
12702 }
12703
12704 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
12705 {
12706         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12707         struct net_device *dev = info->user_ptr[1];
12708         struct wireless_dev *wdev = dev->ieee80211_ptr;
12709         struct cfg80211_pmk_conf pmk_conf = {};
12710         int ret;
12711
12712         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12713             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12714                 return -EOPNOTSUPP;
12715
12716         if (!wiphy_ext_feature_isset(&rdev->wiphy,
12717                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12718                 return -EOPNOTSUPP;
12719
12720         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
12721                 return -EINVAL;
12722
12723         wdev_lock(wdev);
12724         if (!wdev->current_bss) {
12725                 ret = -ENOTCONN;
12726                 goto out;
12727         }
12728
12729         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12730         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
12731                 ret = -EINVAL;
12732                 goto out;
12733         }
12734
12735         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12736         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12737         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
12738             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
12739                 ret = -EINVAL;
12740                 goto out;
12741         }
12742
12743         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
12744                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12745
12746                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
12747                         ret = -EINVAL;
12748                         goto out;
12749                 }
12750
12751                 pmk_conf.pmk_r0_name =
12752                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12753         }
12754
12755         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
12756 out:
12757         wdev_unlock(wdev);
12758         return ret;
12759 }
12760
12761 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
12762 {
12763         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12764         struct net_device *dev = info->user_ptr[1];
12765         struct wireless_dev *wdev = dev->ieee80211_ptr;
12766         const u8 *aa;
12767         int ret;
12768
12769         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12770             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12771                 return -EOPNOTSUPP;
12772
12773         if (!wiphy_ext_feature_isset(&rdev->wiphy,
12774                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12775                 return -EOPNOTSUPP;
12776
12777         if (!info->attrs[NL80211_ATTR_MAC])
12778                 return -EINVAL;
12779
12780         wdev_lock(wdev);
12781         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12782         ret = rdev_del_pmk(rdev, dev, aa);
12783         wdev_unlock(wdev);
12784
12785         return ret;
12786 }
12787
12788 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
12789 {
12790         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12791         struct net_device *dev = info->user_ptr[1];
12792         struct cfg80211_external_auth_params params;
12793
12794         if (!rdev->ops->external_auth)
12795                 return -EOPNOTSUPP;
12796
12797         if (!info->attrs[NL80211_ATTR_SSID])
12798                 return -EINVAL;
12799
12800         if (!info->attrs[NL80211_ATTR_BSSID])
12801                 return -EINVAL;
12802
12803         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
12804                 return -EINVAL;
12805
12806         memset(&params, 0, sizeof(params));
12807
12808         params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
12809         if (params.ssid.ssid_len == 0 ||
12810             params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
12811                 return -EINVAL;
12812         memcpy(params.ssid.ssid, nla_data(info->attrs[NL80211_ATTR_SSID]),
12813                params.ssid.ssid_len);
12814
12815         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
12816                ETH_ALEN);
12817
12818         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
12819
12820         return rdev_external_auth(rdev, dev, &params);
12821 }
12822
12823 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
12824 {
12825         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12826         struct net_device *dev = info->user_ptr[1];
12827         struct wireless_dev *wdev = dev->ieee80211_ptr;
12828         const u8 *buf;
12829         size_t len;
12830         u8 *dest;
12831         u16 proto;
12832         bool noencrypt;
12833         int err;
12834
12835         if (!wiphy_ext_feature_isset(&rdev->wiphy,
12836                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
12837                 return -EOPNOTSUPP;
12838
12839         if (!rdev->ops->tx_control_port)
12840                 return -EOPNOTSUPP;
12841
12842         if (!info->attrs[NL80211_ATTR_FRAME] ||
12843             !info->attrs[NL80211_ATTR_MAC] ||
12844             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
12845                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
12846                 return -EINVAL;
12847         }
12848
12849         wdev_lock(wdev);
12850
12851         switch (wdev->iftype) {
12852         case NL80211_IFTYPE_AP:
12853         case NL80211_IFTYPE_P2P_GO:
12854         case NL80211_IFTYPE_MESH_POINT:
12855                 break;
12856         case NL80211_IFTYPE_ADHOC:
12857         case NL80211_IFTYPE_STATION:
12858         case NL80211_IFTYPE_P2P_CLIENT:
12859                 if (wdev->current_bss)
12860                         break;
12861                 err = -ENOTCONN;
12862                 goto out;
12863         default:
12864                 err = -EOPNOTSUPP;
12865                 goto out;
12866         }
12867
12868         wdev_unlock(wdev);
12869
12870         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
12871         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
12872         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
12873         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
12874         noencrypt =
12875                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
12876
12877         return rdev_tx_control_port(rdev, dev, buf, len,
12878                                     dest, cpu_to_be16(proto), noencrypt);
12879
12880  out:
12881         wdev_unlock(wdev);
12882         return err;
12883 }
12884
12885 #define NL80211_FLAG_NEED_WIPHY         0x01
12886 #define NL80211_FLAG_NEED_NETDEV        0x02
12887 #define NL80211_FLAG_NEED_RTNL          0x04
12888 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
12889 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
12890                                          NL80211_FLAG_CHECK_NETDEV_UP)
12891 #define NL80211_FLAG_NEED_WDEV          0x10
12892 /* If a netdev is associated, it must be UP, P2P must be started */
12893 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
12894                                          NL80211_FLAG_CHECK_NETDEV_UP)
12895 #define NL80211_FLAG_CLEAR_SKB          0x20
12896
12897 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
12898                             struct genl_info *info)
12899 {
12900         struct cfg80211_registered_device *rdev;
12901         struct wireless_dev *wdev;
12902         struct net_device *dev;
12903         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
12904
12905         if (rtnl)
12906                 rtnl_lock();
12907
12908         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
12909                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
12910                 if (IS_ERR(rdev)) {
12911                         if (rtnl)
12912                                 rtnl_unlock();
12913                         return PTR_ERR(rdev);
12914                 }
12915                 info->user_ptr[0] = rdev;
12916         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
12917                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12918                 ASSERT_RTNL();
12919
12920                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
12921                                                   info->attrs);
12922                 if (IS_ERR(wdev)) {
12923                         if (rtnl)
12924                                 rtnl_unlock();
12925                         return PTR_ERR(wdev);
12926                 }
12927
12928                 dev = wdev->netdev;
12929                 rdev = wiphy_to_rdev(wdev->wiphy);
12930
12931                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
12932                         if (!dev) {
12933                                 if (rtnl)
12934                                         rtnl_unlock();
12935                                 return -EINVAL;
12936                         }
12937
12938                         info->user_ptr[1] = dev;
12939                 } else {
12940                         info->user_ptr[1] = wdev;
12941                 }
12942
12943                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
12944                     !wdev_running(wdev)) {
12945                         if (rtnl)
12946                                 rtnl_unlock();
12947                         return -ENETDOWN;
12948                 }
12949
12950                 if (dev)
12951                         dev_hold(dev);
12952
12953                 info->user_ptr[0] = rdev;
12954         }
12955
12956         return 0;
12957 }
12958
12959 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
12960                               struct genl_info *info)
12961 {
12962         if (info->user_ptr[1]) {
12963                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12964                         struct wireless_dev *wdev = info->user_ptr[1];
12965
12966                         if (wdev->netdev)
12967                                 dev_put(wdev->netdev);
12968                 } else {
12969                         dev_put(info->user_ptr[1]);
12970                 }
12971         }
12972
12973         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
12974                 rtnl_unlock();
12975
12976         /* If needed, clear the netlink message payload from the SKB
12977          * as it might contain key data that shouldn't stick around on
12978          * the heap after the SKB is freed. The netlink message header
12979          * is still needed for further processing, so leave it intact.
12980          */
12981         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
12982                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
12983
12984                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
12985         }
12986 }
12987
12988 static const struct genl_ops nl80211_ops[] = {
12989         {
12990                 .cmd = NL80211_CMD_GET_WIPHY,
12991                 .doit = nl80211_get_wiphy,
12992                 .dumpit = nl80211_dump_wiphy,
12993                 .done = nl80211_dump_wiphy_done,
12994                 .policy = nl80211_policy,
12995                 /* can be retrieved by unprivileged users */
12996                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12997                                   NL80211_FLAG_NEED_RTNL,
12998         },
12999         {
13000                 .cmd = NL80211_CMD_SET_WIPHY,
13001                 .doit = nl80211_set_wiphy,
13002                 .policy = nl80211_policy,
13003                 .flags = GENL_UNS_ADMIN_PERM,
13004                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13005         },
13006         {
13007                 .cmd = NL80211_CMD_GET_INTERFACE,
13008                 .doit = nl80211_get_interface,
13009                 .dumpit = nl80211_dump_interface,
13010                 .policy = nl80211_policy,
13011                 /* can be retrieved by unprivileged users */
13012                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13013                                   NL80211_FLAG_NEED_RTNL,
13014         },
13015         {
13016                 .cmd = NL80211_CMD_SET_INTERFACE,
13017                 .doit = nl80211_set_interface,
13018                 .policy = nl80211_policy,
13019                 .flags = GENL_UNS_ADMIN_PERM,
13020                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13021                                   NL80211_FLAG_NEED_RTNL,
13022         },
13023         {
13024                 .cmd = NL80211_CMD_NEW_INTERFACE,
13025                 .doit = nl80211_new_interface,
13026                 .policy = nl80211_policy,
13027                 .flags = GENL_UNS_ADMIN_PERM,
13028                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13029                                   NL80211_FLAG_NEED_RTNL,
13030         },
13031         {
13032                 .cmd = NL80211_CMD_DEL_INTERFACE,
13033                 .doit = nl80211_del_interface,
13034                 .policy = nl80211_policy,
13035                 .flags = GENL_UNS_ADMIN_PERM,
13036                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13037                                   NL80211_FLAG_NEED_RTNL,
13038         },
13039         {
13040                 .cmd = NL80211_CMD_GET_KEY,
13041                 .doit = nl80211_get_key,
13042                 .policy = nl80211_policy,
13043                 .flags = GENL_UNS_ADMIN_PERM,
13044                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13045                                   NL80211_FLAG_NEED_RTNL,
13046         },
13047         {
13048                 .cmd = NL80211_CMD_SET_KEY,
13049                 .doit = nl80211_set_key,
13050                 .policy = nl80211_policy,
13051                 .flags = GENL_UNS_ADMIN_PERM,
13052                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13053                                   NL80211_FLAG_NEED_RTNL |
13054                                   NL80211_FLAG_CLEAR_SKB,
13055         },
13056         {
13057                 .cmd = NL80211_CMD_NEW_KEY,
13058                 .doit = nl80211_new_key,
13059                 .policy = nl80211_policy,
13060                 .flags = GENL_UNS_ADMIN_PERM,
13061                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13062                                   NL80211_FLAG_NEED_RTNL |
13063                                   NL80211_FLAG_CLEAR_SKB,
13064         },
13065         {
13066                 .cmd = NL80211_CMD_DEL_KEY,
13067                 .doit = nl80211_del_key,
13068                 .policy = nl80211_policy,
13069                 .flags = GENL_UNS_ADMIN_PERM,
13070                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13071                                   NL80211_FLAG_NEED_RTNL,
13072         },
13073         {
13074                 .cmd = NL80211_CMD_SET_BEACON,
13075                 .policy = nl80211_policy,
13076                 .flags = GENL_UNS_ADMIN_PERM,
13077                 .doit = nl80211_set_beacon,
13078                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13079                                   NL80211_FLAG_NEED_RTNL,
13080         },
13081         {
13082                 .cmd = NL80211_CMD_START_AP,
13083                 .policy = nl80211_policy,
13084                 .flags = GENL_UNS_ADMIN_PERM,
13085                 .doit = nl80211_start_ap,
13086                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13087                                   NL80211_FLAG_NEED_RTNL,
13088         },
13089         {
13090                 .cmd = NL80211_CMD_STOP_AP,
13091                 .policy = nl80211_policy,
13092                 .flags = GENL_UNS_ADMIN_PERM,
13093                 .doit = nl80211_stop_ap,
13094                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13095                                   NL80211_FLAG_NEED_RTNL,
13096         },
13097         {
13098                 .cmd = NL80211_CMD_GET_STATION,
13099                 .doit = nl80211_get_station,
13100                 .dumpit = nl80211_dump_station,
13101                 .policy = nl80211_policy,
13102                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13103                                   NL80211_FLAG_NEED_RTNL,
13104         },
13105         {
13106                 .cmd = NL80211_CMD_SET_STATION,
13107                 .doit = nl80211_set_station,
13108                 .policy = nl80211_policy,
13109                 .flags = GENL_UNS_ADMIN_PERM,
13110                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13111                                   NL80211_FLAG_NEED_RTNL,
13112         },
13113         {
13114                 .cmd = NL80211_CMD_NEW_STATION,
13115                 .doit = nl80211_new_station,
13116                 .policy = nl80211_policy,
13117                 .flags = GENL_UNS_ADMIN_PERM,
13118                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13119                                   NL80211_FLAG_NEED_RTNL,
13120         },
13121         {
13122                 .cmd = NL80211_CMD_DEL_STATION,
13123                 .doit = nl80211_del_station,
13124                 .policy = nl80211_policy,
13125                 .flags = GENL_UNS_ADMIN_PERM,
13126                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13127                                   NL80211_FLAG_NEED_RTNL,
13128         },
13129         {
13130                 .cmd = NL80211_CMD_GET_MPATH,
13131                 .doit = nl80211_get_mpath,
13132                 .dumpit = nl80211_dump_mpath,
13133                 .policy = nl80211_policy,
13134                 .flags = GENL_UNS_ADMIN_PERM,
13135                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13136                                   NL80211_FLAG_NEED_RTNL,
13137         },
13138         {
13139                 .cmd = NL80211_CMD_GET_MPP,
13140                 .doit = nl80211_get_mpp,
13141                 .dumpit = nl80211_dump_mpp,
13142                 .policy = nl80211_policy,
13143                 .flags = GENL_UNS_ADMIN_PERM,
13144                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13145                                   NL80211_FLAG_NEED_RTNL,
13146         },
13147         {
13148                 .cmd = NL80211_CMD_SET_MPATH,
13149                 .doit = nl80211_set_mpath,
13150                 .policy = nl80211_policy,
13151                 .flags = GENL_UNS_ADMIN_PERM,
13152                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13153                                   NL80211_FLAG_NEED_RTNL,
13154         },
13155         {
13156                 .cmd = NL80211_CMD_NEW_MPATH,
13157                 .doit = nl80211_new_mpath,
13158                 .policy = nl80211_policy,
13159                 .flags = GENL_UNS_ADMIN_PERM,
13160                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13161                                   NL80211_FLAG_NEED_RTNL,
13162         },
13163         {
13164                 .cmd = NL80211_CMD_DEL_MPATH,
13165                 .doit = nl80211_del_mpath,
13166                 .policy = nl80211_policy,
13167                 .flags = GENL_UNS_ADMIN_PERM,
13168                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13169                                   NL80211_FLAG_NEED_RTNL,
13170         },
13171         {
13172                 .cmd = NL80211_CMD_SET_BSS,
13173                 .doit = nl80211_set_bss,
13174                 .policy = nl80211_policy,
13175                 .flags = GENL_UNS_ADMIN_PERM,
13176                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13177                                   NL80211_FLAG_NEED_RTNL,
13178         },
13179         {
13180                 .cmd = NL80211_CMD_GET_REG,
13181                 .doit = nl80211_get_reg_do,
13182                 .dumpit = nl80211_get_reg_dump,
13183                 .policy = nl80211_policy,
13184                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13185                 /* can be retrieved by unprivileged users */
13186         },
13187 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
13188         {
13189                 .cmd = NL80211_CMD_SET_REG,
13190                 .doit = nl80211_set_reg,
13191                 .policy = nl80211_policy,
13192                 .flags = GENL_ADMIN_PERM,
13193                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13194         },
13195 #endif
13196         {
13197                 .cmd = NL80211_CMD_REQ_SET_REG,
13198                 .doit = nl80211_req_set_reg,
13199                 .policy = nl80211_policy,
13200                 .flags = GENL_ADMIN_PERM,
13201         },
13202         {
13203                 .cmd = NL80211_CMD_RELOAD_REGDB,
13204                 .doit = nl80211_reload_regdb,
13205                 .policy = nl80211_policy,
13206                 .flags = GENL_ADMIN_PERM,
13207         },
13208         {
13209                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
13210                 .doit = nl80211_get_mesh_config,
13211                 .policy = nl80211_policy,
13212                 /* can be retrieved by unprivileged users */
13213                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13214                                   NL80211_FLAG_NEED_RTNL,
13215         },
13216         {
13217                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
13218                 .doit = nl80211_update_mesh_config,
13219                 .policy = nl80211_policy,
13220                 .flags = GENL_UNS_ADMIN_PERM,
13221                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13222                                   NL80211_FLAG_NEED_RTNL,
13223         },
13224         {
13225                 .cmd = NL80211_CMD_TRIGGER_SCAN,
13226                 .doit = nl80211_trigger_scan,
13227                 .policy = nl80211_policy,
13228                 .flags = GENL_UNS_ADMIN_PERM,
13229                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13230                                   NL80211_FLAG_NEED_RTNL,
13231         },
13232         {
13233                 .cmd = NL80211_CMD_ABORT_SCAN,
13234                 .doit = nl80211_abort_scan,
13235                 .policy = nl80211_policy,
13236                 .flags = GENL_UNS_ADMIN_PERM,
13237                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13238                                   NL80211_FLAG_NEED_RTNL,
13239         },
13240         {
13241                 .cmd = NL80211_CMD_GET_SCAN,
13242                 .policy = nl80211_policy,
13243                 .dumpit = nl80211_dump_scan,
13244         },
13245         {
13246                 .cmd = NL80211_CMD_START_SCHED_SCAN,
13247                 .doit = nl80211_start_sched_scan,
13248                 .policy = nl80211_policy,
13249                 .flags = GENL_UNS_ADMIN_PERM,
13250                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13251                                   NL80211_FLAG_NEED_RTNL,
13252         },
13253         {
13254                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
13255                 .doit = nl80211_stop_sched_scan,
13256                 .policy = nl80211_policy,
13257                 .flags = GENL_UNS_ADMIN_PERM,
13258                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13259                                   NL80211_FLAG_NEED_RTNL,
13260         },
13261         {
13262                 .cmd = NL80211_CMD_AUTHENTICATE,
13263                 .doit = nl80211_authenticate,
13264                 .policy = nl80211_policy,
13265                 .flags = GENL_UNS_ADMIN_PERM,
13266                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13267                                   NL80211_FLAG_NEED_RTNL |
13268                                   NL80211_FLAG_CLEAR_SKB,
13269         },
13270         {
13271                 .cmd = NL80211_CMD_ASSOCIATE,
13272                 .doit = nl80211_associate,
13273                 .policy = nl80211_policy,
13274                 .flags = GENL_UNS_ADMIN_PERM,
13275                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13276                                   NL80211_FLAG_NEED_RTNL,
13277         },
13278         {
13279                 .cmd = NL80211_CMD_DEAUTHENTICATE,
13280                 .doit = nl80211_deauthenticate,
13281                 .policy = nl80211_policy,
13282                 .flags = GENL_UNS_ADMIN_PERM,
13283                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13284                                   NL80211_FLAG_NEED_RTNL,
13285         },
13286         {
13287                 .cmd = NL80211_CMD_DISASSOCIATE,
13288                 .doit = nl80211_disassociate,
13289                 .policy = nl80211_policy,
13290                 .flags = GENL_UNS_ADMIN_PERM,
13291                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13292                                   NL80211_FLAG_NEED_RTNL,
13293         },
13294         {
13295                 .cmd = NL80211_CMD_JOIN_IBSS,
13296                 .doit = nl80211_join_ibss,
13297                 .policy = nl80211_policy,
13298                 .flags = GENL_UNS_ADMIN_PERM,
13299                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13300                                   NL80211_FLAG_NEED_RTNL,
13301         },
13302         {
13303                 .cmd = NL80211_CMD_LEAVE_IBSS,
13304                 .doit = nl80211_leave_ibss,
13305                 .policy = nl80211_policy,
13306                 .flags = GENL_UNS_ADMIN_PERM,
13307                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13308                                   NL80211_FLAG_NEED_RTNL,
13309         },
13310 #ifdef CONFIG_NL80211_TESTMODE
13311         {
13312                 .cmd = NL80211_CMD_TESTMODE,
13313                 .doit = nl80211_testmode_do,
13314                 .dumpit = nl80211_testmode_dump,
13315                 .policy = nl80211_policy,
13316                 .flags = GENL_UNS_ADMIN_PERM,
13317                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13318                                   NL80211_FLAG_NEED_RTNL,
13319         },
13320 #endif
13321         {
13322                 .cmd = NL80211_CMD_CONNECT,
13323                 .doit = nl80211_connect,
13324                 .policy = nl80211_policy,
13325                 .flags = GENL_UNS_ADMIN_PERM,
13326                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13327                                   NL80211_FLAG_NEED_RTNL,
13328         },
13329         {
13330                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
13331                 .doit = nl80211_update_connect_params,
13332                 .policy = nl80211_policy,
13333                 .flags = GENL_ADMIN_PERM,
13334                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13335                                   NL80211_FLAG_NEED_RTNL,
13336         },
13337         {
13338                 .cmd = NL80211_CMD_DISCONNECT,
13339                 .doit = nl80211_disconnect,
13340                 .policy = nl80211_policy,
13341                 .flags = GENL_UNS_ADMIN_PERM,
13342                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13343                                   NL80211_FLAG_NEED_RTNL,
13344         },
13345         {
13346                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
13347                 .doit = nl80211_wiphy_netns,
13348                 .policy = nl80211_policy,
13349                 .flags = GENL_UNS_ADMIN_PERM,
13350                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13351                                   NL80211_FLAG_NEED_RTNL,
13352         },
13353         {
13354                 .cmd = NL80211_CMD_GET_SURVEY,
13355                 .policy = nl80211_policy,
13356                 .dumpit = nl80211_dump_survey,
13357         },
13358         {
13359                 .cmd = NL80211_CMD_SET_PMKSA,
13360                 .doit = nl80211_setdel_pmksa,
13361                 .policy = nl80211_policy,
13362                 .flags = GENL_UNS_ADMIN_PERM,
13363                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13364                                   NL80211_FLAG_NEED_RTNL,
13365         },
13366         {
13367                 .cmd = NL80211_CMD_DEL_PMKSA,
13368                 .doit = nl80211_setdel_pmksa,
13369                 .policy = nl80211_policy,
13370                 .flags = GENL_UNS_ADMIN_PERM,
13371                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13372                                   NL80211_FLAG_NEED_RTNL,
13373         },
13374         {
13375                 .cmd = NL80211_CMD_FLUSH_PMKSA,
13376                 .doit = nl80211_flush_pmksa,
13377                 .policy = nl80211_policy,
13378                 .flags = GENL_UNS_ADMIN_PERM,
13379                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13380                                   NL80211_FLAG_NEED_RTNL,
13381         },
13382         {
13383                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
13384                 .doit = nl80211_remain_on_channel,
13385                 .policy = nl80211_policy,
13386                 .flags = GENL_UNS_ADMIN_PERM,
13387                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13388                                   NL80211_FLAG_NEED_RTNL,
13389         },
13390         {
13391                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
13392                 .doit = nl80211_cancel_remain_on_channel,
13393                 .policy = nl80211_policy,
13394                 .flags = GENL_UNS_ADMIN_PERM,
13395                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13396                                   NL80211_FLAG_NEED_RTNL,
13397         },
13398         {
13399                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
13400                 .doit = nl80211_set_tx_bitrate_mask,
13401                 .policy = nl80211_policy,
13402                 .flags = GENL_UNS_ADMIN_PERM,
13403                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13404                                   NL80211_FLAG_NEED_RTNL,
13405         },
13406         {
13407                 .cmd = NL80211_CMD_REGISTER_FRAME,
13408                 .doit = nl80211_register_mgmt,
13409                 .policy = nl80211_policy,
13410                 .flags = GENL_UNS_ADMIN_PERM,
13411                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13412                                   NL80211_FLAG_NEED_RTNL,
13413         },
13414         {
13415                 .cmd = NL80211_CMD_FRAME,
13416                 .doit = nl80211_tx_mgmt,
13417                 .policy = nl80211_policy,
13418                 .flags = GENL_UNS_ADMIN_PERM,
13419                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13420                                   NL80211_FLAG_NEED_RTNL,
13421         },
13422         {
13423                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
13424                 .doit = nl80211_tx_mgmt_cancel_wait,
13425                 .policy = nl80211_policy,
13426                 .flags = GENL_UNS_ADMIN_PERM,
13427                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13428                                   NL80211_FLAG_NEED_RTNL,
13429         },
13430         {
13431                 .cmd = NL80211_CMD_SET_POWER_SAVE,
13432                 .doit = nl80211_set_power_save,
13433                 .policy = nl80211_policy,
13434                 .flags = GENL_UNS_ADMIN_PERM,
13435                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13436                                   NL80211_FLAG_NEED_RTNL,
13437         },
13438         {
13439                 .cmd = NL80211_CMD_GET_POWER_SAVE,
13440                 .doit = nl80211_get_power_save,
13441                 .policy = nl80211_policy,
13442                 /* can be retrieved by unprivileged users */
13443                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13444                                   NL80211_FLAG_NEED_RTNL,
13445         },
13446         {
13447                 .cmd = NL80211_CMD_SET_CQM,
13448                 .doit = nl80211_set_cqm,
13449                 .policy = nl80211_policy,
13450                 .flags = GENL_UNS_ADMIN_PERM,
13451                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13452                                   NL80211_FLAG_NEED_RTNL,
13453         },
13454         {
13455                 .cmd = NL80211_CMD_SET_CHANNEL,
13456                 .doit = nl80211_set_channel,
13457                 .policy = nl80211_policy,
13458                 .flags = GENL_UNS_ADMIN_PERM,
13459                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13460                                   NL80211_FLAG_NEED_RTNL,
13461         },
13462         {
13463                 .cmd = NL80211_CMD_SET_WDS_PEER,
13464                 .doit = nl80211_set_wds_peer,
13465                 .policy = nl80211_policy,
13466                 .flags = GENL_UNS_ADMIN_PERM,
13467                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13468                                   NL80211_FLAG_NEED_RTNL,
13469         },
13470         {
13471                 .cmd = NL80211_CMD_JOIN_MESH,
13472                 .doit = nl80211_join_mesh,
13473                 .policy = nl80211_policy,
13474                 .flags = GENL_UNS_ADMIN_PERM,
13475                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13476                                   NL80211_FLAG_NEED_RTNL,
13477         },
13478         {
13479                 .cmd = NL80211_CMD_LEAVE_MESH,
13480                 .doit = nl80211_leave_mesh,
13481                 .policy = nl80211_policy,
13482                 .flags = GENL_UNS_ADMIN_PERM,
13483                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13484                                   NL80211_FLAG_NEED_RTNL,
13485         },
13486         {
13487                 .cmd = NL80211_CMD_JOIN_OCB,
13488                 .doit = nl80211_join_ocb,
13489                 .policy = nl80211_policy,
13490                 .flags = GENL_UNS_ADMIN_PERM,
13491                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13492                                   NL80211_FLAG_NEED_RTNL,
13493         },
13494         {
13495                 .cmd = NL80211_CMD_LEAVE_OCB,
13496                 .doit = nl80211_leave_ocb,
13497                 .policy = nl80211_policy,
13498                 .flags = GENL_UNS_ADMIN_PERM,
13499                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13500                                   NL80211_FLAG_NEED_RTNL,
13501         },
13502 #ifdef CONFIG_PM
13503         {
13504                 .cmd = NL80211_CMD_GET_WOWLAN,
13505                 .doit = nl80211_get_wowlan,
13506                 .policy = nl80211_policy,
13507                 /* can be retrieved by unprivileged users */
13508                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13509                                   NL80211_FLAG_NEED_RTNL,
13510         },
13511         {
13512                 .cmd = NL80211_CMD_SET_WOWLAN,
13513                 .doit = nl80211_set_wowlan,
13514                 .policy = nl80211_policy,
13515                 .flags = GENL_UNS_ADMIN_PERM,
13516                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13517                                   NL80211_FLAG_NEED_RTNL,
13518         },
13519 #endif
13520         {
13521                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
13522                 .doit = nl80211_set_rekey_data,
13523                 .policy = nl80211_policy,
13524                 .flags = GENL_UNS_ADMIN_PERM,
13525                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13526                                   NL80211_FLAG_NEED_RTNL |
13527                                   NL80211_FLAG_CLEAR_SKB,
13528         },
13529         {
13530                 .cmd = NL80211_CMD_TDLS_MGMT,
13531                 .doit = nl80211_tdls_mgmt,
13532                 .policy = nl80211_policy,
13533                 .flags = GENL_UNS_ADMIN_PERM,
13534                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13535                                   NL80211_FLAG_NEED_RTNL,
13536         },
13537         {
13538                 .cmd = NL80211_CMD_TDLS_OPER,
13539                 .doit = nl80211_tdls_oper,
13540                 .policy = nl80211_policy,
13541                 .flags = GENL_UNS_ADMIN_PERM,
13542                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13543                                   NL80211_FLAG_NEED_RTNL,
13544         },
13545         {
13546                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
13547                 .doit = nl80211_register_unexpected_frame,
13548                 .policy = nl80211_policy,
13549                 .flags = GENL_UNS_ADMIN_PERM,
13550                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13551                                   NL80211_FLAG_NEED_RTNL,
13552         },
13553         {
13554                 .cmd = NL80211_CMD_PROBE_CLIENT,
13555                 .doit = nl80211_probe_client,
13556                 .policy = nl80211_policy,
13557                 .flags = GENL_UNS_ADMIN_PERM,
13558                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13559                                   NL80211_FLAG_NEED_RTNL,
13560         },
13561         {
13562                 .cmd = NL80211_CMD_REGISTER_BEACONS,
13563                 .doit = nl80211_register_beacons,
13564                 .policy = nl80211_policy,
13565                 .flags = GENL_UNS_ADMIN_PERM,
13566                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13567                                   NL80211_FLAG_NEED_RTNL,
13568         },
13569         {
13570                 .cmd = NL80211_CMD_SET_NOACK_MAP,
13571                 .doit = nl80211_set_noack_map,
13572                 .policy = nl80211_policy,
13573                 .flags = GENL_UNS_ADMIN_PERM,
13574                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13575                                   NL80211_FLAG_NEED_RTNL,
13576         },
13577         {
13578                 .cmd = NL80211_CMD_START_P2P_DEVICE,
13579                 .doit = nl80211_start_p2p_device,
13580                 .policy = nl80211_policy,
13581                 .flags = GENL_UNS_ADMIN_PERM,
13582                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13583                                   NL80211_FLAG_NEED_RTNL,
13584         },
13585         {
13586                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
13587                 .doit = nl80211_stop_p2p_device,
13588                 .policy = nl80211_policy,
13589                 .flags = GENL_UNS_ADMIN_PERM,
13590                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13591                                   NL80211_FLAG_NEED_RTNL,
13592         },
13593         {
13594                 .cmd = NL80211_CMD_START_NAN,
13595                 .doit = nl80211_start_nan,
13596                 .policy = nl80211_policy,
13597                 .flags = GENL_ADMIN_PERM,
13598                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13599                                   NL80211_FLAG_NEED_RTNL,
13600         },
13601         {
13602                 .cmd = NL80211_CMD_STOP_NAN,
13603                 .doit = nl80211_stop_nan,
13604                 .policy = nl80211_policy,
13605                 .flags = GENL_ADMIN_PERM,
13606                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13607                                   NL80211_FLAG_NEED_RTNL,
13608         },
13609         {
13610                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
13611                 .doit = nl80211_nan_add_func,
13612                 .policy = nl80211_policy,
13613                 .flags = GENL_ADMIN_PERM,
13614                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13615                                   NL80211_FLAG_NEED_RTNL,
13616         },
13617         {
13618                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
13619                 .doit = nl80211_nan_del_func,
13620                 .policy = nl80211_policy,
13621                 .flags = GENL_ADMIN_PERM,
13622                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13623                                   NL80211_FLAG_NEED_RTNL,
13624         },
13625         {
13626                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
13627                 .doit = nl80211_nan_change_config,
13628                 .policy = nl80211_policy,
13629                 .flags = GENL_ADMIN_PERM,
13630                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13631                                   NL80211_FLAG_NEED_RTNL,
13632         },
13633         {
13634                 .cmd = NL80211_CMD_SET_MCAST_RATE,
13635                 .doit = nl80211_set_mcast_rate,
13636                 .policy = nl80211_policy,
13637                 .flags = GENL_UNS_ADMIN_PERM,
13638                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13639                                   NL80211_FLAG_NEED_RTNL,
13640         },
13641         {
13642                 .cmd = NL80211_CMD_SET_MAC_ACL,
13643                 .doit = nl80211_set_mac_acl,
13644                 .policy = nl80211_policy,
13645                 .flags = GENL_UNS_ADMIN_PERM,
13646                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13647                                   NL80211_FLAG_NEED_RTNL,
13648         },
13649         {
13650                 .cmd = NL80211_CMD_RADAR_DETECT,
13651                 .doit = nl80211_start_radar_detection,
13652                 .policy = nl80211_policy,
13653                 .flags = GENL_UNS_ADMIN_PERM,
13654                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13655                                   NL80211_FLAG_NEED_RTNL,
13656         },
13657         {
13658                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
13659                 .doit = nl80211_get_protocol_features,
13660                 .policy = nl80211_policy,
13661         },
13662         {
13663                 .cmd = NL80211_CMD_UPDATE_FT_IES,
13664                 .doit = nl80211_update_ft_ies,
13665                 .policy = nl80211_policy,
13666                 .flags = GENL_UNS_ADMIN_PERM,
13667                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13668                                   NL80211_FLAG_NEED_RTNL,
13669         },
13670         {
13671                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
13672                 .doit = nl80211_crit_protocol_start,
13673                 .policy = nl80211_policy,
13674                 .flags = GENL_UNS_ADMIN_PERM,
13675                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13676                                   NL80211_FLAG_NEED_RTNL,
13677         },
13678         {
13679                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
13680                 .doit = nl80211_crit_protocol_stop,
13681                 .policy = nl80211_policy,
13682                 .flags = GENL_UNS_ADMIN_PERM,
13683                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13684                                   NL80211_FLAG_NEED_RTNL,
13685         },
13686         {
13687                 .cmd = NL80211_CMD_GET_COALESCE,
13688                 .doit = nl80211_get_coalesce,
13689                 .policy = nl80211_policy,
13690                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13691                                   NL80211_FLAG_NEED_RTNL,
13692         },
13693         {
13694                 .cmd = NL80211_CMD_SET_COALESCE,
13695                 .doit = nl80211_set_coalesce,
13696                 .policy = nl80211_policy,
13697                 .flags = GENL_UNS_ADMIN_PERM,
13698                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13699                                   NL80211_FLAG_NEED_RTNL,
13700         },
13701         {
13702                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
13703                 .doit = nl80211_channel_switch,
13704                 .policy = nl80211_policy,
13705                 .flags = GENL_UNS_ADMIN_PERM,
13706                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13707                                   NL80211_FLAG_NEED_RTNL,
13708         },
13709         {
13710                 .cmd = NL80211_CMD_VENDOR,
13711                 .doit = nl80211_vendor_cmd,
13712                 .dumpit = nl80211_vendor_cmd_dump,
13713                 .policy = nl80211_policy,
13714                 .flags = GENL_UNS_ADMIN_PERM,
13715                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13716                                   NL80211_FLAG_NEED_RTNL,
13717         },
13718         {
13719                 .cmd = NL80211_CMD_SET_QOS_MAP,
13720                 .doit = nl80211_set_qos_map,
13721                 .policy = nl80211_policy,
13722                 .flags = GENL_UNS_ADMIN_PERM,
13723                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13724                                   NL80211_FLAG_NEED_RTNL,
13725         },
13726         {
13727                 .cmd = NL80211_CMD_ADD_TX_TS,
13728                 .doit = nl80211_add_tx_ts,
13729                 .policy = nl80211_policy,
13730                 .flags = GENL_UNS_ADMIN_PERM,
13731                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13732                                   NL80211_FLAG_NEED_RTNL,
13733         },
13734         {
13735                 .cmd = NL80211_CMD_DEL_TX_TS,
13736                 .doit = nl80211_del_tx_ts,
13737                 .policy = nl80211_policy,
13738                 .flags = GENL_UNS_ADMIN_PERM,
13739                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13740                                   NL80211_FLAG_NEED_RTNL,
13741         },
13742         {
13743                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
13744                 .doit = nl80211_tdls_channel_switch,
13745                 .policy = nl80211_policy,
13746                 .flags = GENL_UNS_ADMIN_PERM,
13747                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13748                                   NL80211_FLAG_NEED_RTNL,
13749         },
13750         {
13751                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
13752                 .doit = nl80211_tdls_cancel_channel_switch,
13753                 .policy = nl80211_policy,
13754                 .flags = GENL_UNS_ADMIN_PERM,
13755                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13756                                   NL80211_FLAG_NEED_RTNL,
13757         },
13758         {
13759                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
13760                 .doit = nl80211_set_multicast_to_unicast,
13761                 .policy = nl80211_policy,
13762                 .flags = GENL_UNS_ADMIN_PERM,
13763                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13764                                   NL80211_FLAG_NEED_RTNL,
13765         },
13766         {
13767                 .cmd = NL80211_CMD_SET_PMK,
13768                 .doit = nl80211_set_pmk,
13769                 .policy = nl80211_policy,
13770                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13771                                   NL80211_FLAG_NEED_RTNL,
13772         },
13773         {
13774                 .cmd = NL80211_CMD_DEL_PMK,
13775                 .doit = nl80211_del_pmk,
13776                 .policy = nl80211_policy,
13777                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13778                                   NL80211_FLAG_NEED_RTNL,
13779         },
13780         {
13781                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
13782                 .doit = nl80211_external_auth,
13783                 .policy = nl80211_policy,
13784                 .flags = GENL_ADMIN_PERM,
13785                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13786                                   NL80211_FLAG_NEED_RTNL,
13787         },
13788         {
13789                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
13790                 .doit = nl80211_tx_control_port,
13791                 .policy = nl80211_policy,
13792                 .flags = GENL_UNS_ADMIN_PERM,
13793                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13794                                   NL80211_FLAG_NEED_RTNL,
13795         },
13796 };
13797
13798 static struct genl_family nl80211_fam __ro_after_init = {
13799         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
13800         .hdrsize = 0,                   /* no private header */
13801         .version = 1,                   /* no particular meaning now */
13802         .maxattr = NL80211_ATTR_MAX,
13803         .netnsok = true,
13804         .pre_doit = nl80211_pre_doit,
13805         .post_doit = nl80211_post_doit,
13806         .module = THIS_MODULE,
13807         .ops = nl80211_ops,
13808         .n_ops = ARRAY_SIZE(nl80211_ops),
13809         .mcgrps = nl80211_mcgrps,
13810         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
13811 };
13812
13813 /* notification functions */
13814
13815 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
13816                           enum nl80211_commands cmd)
13817 {
13818         struct sk_buff *msg;
13819         struct nl80211_dump_wiphy_state state = {};
13820
13821         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
13822                 cmd != NL80211_CMD_DEL_WIPHY);
13823
13824         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13825         if (!msg)
13826                 return;
13827
13828         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
13829                 nlmsg_free(msg);
13830                 return;
13831         }
13832
13833         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13834                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13835 }
13836
13837 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
13838                                 struct wireless_dev *wdev,
13839                                 enum nl80211_commands cmd)
13840 {
13841         struct sk_buff *msg;
13842
13843         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
13844                 cmd != NL80211_CMD_DEL_INTERFACE);
13845
13846         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13847         if (!msg)
13848                 return;
13849
13850         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
13851                                cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
13852                 nlmsg_free(msg);
13853                 return;
13854         }
13855
13856         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13857                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13858 }
13859
13860 static int nl80211_add_scan_req(struct sk_buff *msg,
13861                                 struct cfg80211_registered_device *rdev)
13862 {
13863         struct cfg80211_scan_request *req = rdev->scan_req;
13864         struct nlattr *nest;
13865         int i;
13866
13867         if (WARN_ON(!req))
13868                 return 0;
13869
13870         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
13871         if (!nest)
13872                 goto nla_put_failure;
13873         for (i = 0; i < req->n_ssids; i++) {
13874                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
13875                         goto nla_put_failure;
13876         }
13877         nla_nest_end(msg, nest);
13878
13879         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13880         if (!nest)
13881                 goto nla_put_failure;
13882         for (i = 0; i < req->n_channels; i++) {
13883                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13884                         goto nla_put_failure;
13885         }
13886         nla_nest_end(msg, nest);
13887
13888         if (req->ie &&
13889             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
13890                 goto nla_put_failure;
13891
13892         if (req->flags &&
13893             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
13894                 goto nla_put_failure;
13895
13896         if (req->info.scan_start_tsf &&
13897             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
13898                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
13899              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
13900                      req->info.tsf_bssid)))
13901                 goto nla_put_failure;
13902
13903         return 0;
13904  nla_put_failure:
13905         return -ENOBUFS;
13906 }
13907
13908 static int nl80211_prep_scan_msg(struct sk_buff *msg,
13909                                  struct cfg80211_registered_device *rdev,
13910                                  struct wireless_dev *wdev,
13911                                  u32 portid, u32 seq, int flags,
13912                                  u32 cmd)
13913 {
13914         void *hdr;
13915
13916         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
13917         if (!hdr)
13918                 return -1;
13919
13920         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13921             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13922                                          wdev->netdev->ifindex)) ||
13923             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13924                               NL80211_ATTR_PAD))
13925                 goto nla_put_failure;
13926
13927         /* ignore errors and send incomplete event anyway */
13928         nl80211_add_scan_req(msg, rdev);
13929
13930         genlmsg_end(msg, hdr);
13931         return 0;
13932
13933  nla_put_failure:
13934         genlmsg_cancel(msg, hdr);
13935         return -EMSGSIZE;
13936 }
13937
13938 static int
13939 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
13940                             struct cfg80211_sched_scan_request *req, u32 cmd)
13941 {
13942         void *hdr;
13943
13944         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13945         if (!hdr)
13946                 return -1;
13947
13948         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
13949                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
13950             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
13951             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
13952                               NL80211_ATTR_PAD))
13953                 goto nla_put_failure;
13954
13955         genlmsg_end(msg, hdr);
13956         return 0;
13957
13958  nla_put_failure:
13959         genlmsg_cancel(msg, hdr);
13960         return -EMSGSIZE;
13961 }
13962
13963 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
13964                              struct wireless_dev *wdev)
13965 {
13966         struct sk_buff *msg;
13967
13968         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13969         if (!msg)
13970                 return;
13971
13972         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13973                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
13974                 nlmsg_free(msg);
13975                 return;
13976         }
13977
13978         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13979                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
13980 }
13981
13982 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
13983                                        struct wireless_dev *wdev, bool aborted)
13984 {
13985         struct sk_buff *msg;
13986
13987         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13988         if (!msg)
13989                 return NULL;
13990
13991         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13992                                   aborted ? NL80211_CMD_SCAN_ABORTED :
13993                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
13994                 nlmsg_free(msg);
13995                 return NULL;
13996         }
13997
13998         return msg;
13999 }
14000
14001 /* send message created by nl80211_build_scan_msg() */
14002 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
14003                            struct sk_buff *msg)
14004 {
14005         if (!msg)
14006                 return;
14007
14008         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14009                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14010 }
14011
14012 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
14013 {
14014         struct sk_buff *msg;
14015
14016         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14017         if (!msg)
14018                 return;
14019
14020         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
14021                 nlmsg_free(msg);
14022                 return;
14023         }
14024
14025         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
14026                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14027 }
14028
14029 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
14030                                           struct regulatory_request *request)
14031 {
14032         /* Userspace can always count this one always being set */
14033         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
14034                 goto nla_put_failure;
14035
14036         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
14037                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14038                                NL80211_REGDOM_TYPE_WORLD))
14039                         goto nla_put_failure;
14040         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
14041                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14042                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
14043                         goto nla_put_failure;
14044         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
14045                    request->intersect) {
14046                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14047                                NL80211_REGDOM_TYPE_INTERSECTION))
14048                         goto nla_put_failure;
14049         } else {
14050                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14051                                NL80211_REGDOM_TYPE_COUNTRY) ||
14052                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
14053                                    request->alpha2))
14054                         goto nla_put_failure;
14055         }
14056
14057         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
14058                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
14059
14060                 if (wiphy &&
14061                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
14062                         goto nla_put_failure;
14063
14064                 if (wiphy &&
14065                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
14066                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
14067                         goto nla_put_failure;
14068         }
14069
14070         return true;
14071
14072 nla_put_failure:
14073         return false;
14074 }
14075
14076 /*
14077  * This can happen on global regulatory changes or device specific settings
14078  * based on custom regulatory domains.
14079  */
14080 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
14081                                      struct regulatory_request *request)
14082 {
14083         struct sk_buff *msg;
14084         void *hdr;
14085
14086         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14087         if (!msg)
14088                 return;
14089
14090         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
14091         if (!hdr) {
14092                 nlmsg_free(msg);
14093                 return;
14094         }
14095
14096         if (nl80211_reg_change_event_fill(msg, request) == false)
14097                 goto nla_put_failure;
14098
14099         genlmsg_end(msg, hdr);
14100
14101         rcu_read_lock();
14102         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14103                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14104         rcu_read_unlock();
14105
14106         return;
14107
14108 nla_put_failure:
14109         nlmsg_free(msg);
14110 }
14111
14112 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
14113                                     struct net_device *netdev,
14114                                     const u8 *buf, size_t len,
14115                                     enum nl80211_commands cmd, gfp_t gfp,
14116                                     int uapsd_queues)
14117 {
14118         struct sk_buff *msg;
14119         void *hdr;
14120
14121         msg = nlmsg_new(100 + len, gfp);
14122         if (!msg)
14123                 return;
14124
14125         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14126         if (!hdr) {
14127                 nlmsg_free(msg);
14128                 return;
14129         }
14130
14131         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14132             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14133             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
14134                 goto nla_put_failure;
14135
14136         if (uapsd_queues >= 0) {
14137                 struct nlattr *nla_wmm =
14138                         nla_nest_start(msg, NL80211_ATTR_STA_WME);
14139                 if (!nla_wmm)
14140                         goto nla_put_failure;
14141
14142                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
14143                                uapsd_queues))
14144                         goto nla_put_failure;
14145
14146                 nla_nest_end(msg, nla_wmm);
14147         }
14148
14149         genlmsg_end(msg, hdr);
14150
14151         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14152                                 NL80211_MCGRP_MLME, gfp);
14153         return;
14154
14155  nla_put_failure:
14156         nlmsg_free(msg);
14157 }
14158
14159 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
14160                           struct net_device *netdev, const u8 *buf,
14161                           size_t len, gfp_t gfp)
14162 {
14163         nl80211_send_mlme_event(rdev, netdev, buf, len,
14164                                 NL80211_CMD_AUTHENTICATE, gfp, -1);
14165 }
14166
14167 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
14168                            struct net_device *netdev, const u8 *buf,
14169                            size_t len, gfp_t gfp, int uapsd_queues)
14170 {
14171         nl80211_send_mlme_event(rdev, netdev, buf, len,
14172                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
14173 }
14174
14175 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
14176                          struct net_device *netdev, const u8 *buf,
14177                          size_t len, gfp_t gfp)
14178 {
14179         nl80211_send_mlme_event(rdev, netdev, buf, len,
14180                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
14181 }
14182
14183 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
14184                            struct net_device *netdev, const u8 *buf,
14185                            size_t len, gfp_t gfp)
14186 {
14187         nl80211_send_mlme_event(rdev, netdev, buf, len,
14188                                 NL80211_CMD_DISASSOCIATE, gfp, -1);
14189 }
14190
14191 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
14192                                   size_t len)
14193 {
14194         struct wireless_dev *wdev = dev->ieee80211_ptr;
14195         struct wiphy *wiphy = wdev->wiphy;
14196         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14197         const struct ieee80211_mgmt *mgmt = (void *)buf;
14198         u32 cmd;
14199
14200         if (WARN_ON(len < 2))
14201                 return;
14202
14203         if (ieee80211_is_deauth(mgmt->frame_control))
14204                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
14205         else
14206                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
14207
14208         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
14209         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
14210 }
14211 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
14212
14213 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
14214                                       struct net_device *netdev, int cmd,
14215                                       const u8 *addr, gfp_t gfp)
14216 {
14217         struct sk_buff *msg;
14218         void *hdr;
14219
14220         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14221         if (!msg)
14222                 return;
14223
14224         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14225         if (!hdr) {
14226                 nlmsg_free(msg);
14227                 return;
14228         }
14229
14230         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14231             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14232             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
14233             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14234                 goto nla_put_failure;
14235
14236         genlmsg_end(msg, hdr);
14237
14238         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14239                                 NL80211_MCGRP_MLME, gfp);
14240         return;
14241
14242  nla_put_failure:
14243         nlmsg_free(msg);
14244 }
14245
14246 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
14247                                struct net_device *netdev, const u8 *addr,
14248                                gfp_t gfp)
14249 {
14250         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
14251                                   addr, gfp);
14252 }
14253
14254 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
14255                                 struct net_device *netdev, const u8 *addr,
14256                                 gfp_t gfp)
14257 {
14258         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
14259                                   addr, gfp);
14260 }
14261
14262 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
14263                                  struct net_device *netdev,
14264                                  struct cfg80211_connect_resp_params *cr,
14265                                  gfp_t gfp)
14266 {
14267         struct sk_buff *msg;
14268         void *hdr;
14269
14270         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
14271                         cr->fils.kek_len + cr->fils.pmk_len +
14272                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
14273         if (!msg)
14274                 return;
14275
14276         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
14277         if (!hdr) {
14278                 nlmsg_free(msg);
14279                 return;
14280         }
14281
14282         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14283             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14284             (cr->bssid &&
14285              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
14286             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
14287                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
14288                         cr->status) ||
14289             (cr->status < 0 &&
14290              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
14291               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
14292                           cr->timeout_reason))) ||
14293             (cr->req_ie &&
14294              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
14295             (cr->resp_ie &&
14296              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
14297                      cr->resp_ie)) ||
14298             (cr->fils.update_erp_next_seq_num &&
14299              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
14300                          cr->fils.erp_next_seq_num)) ||
14301             (cr->status == WLAN_STATUS_SUCCESS &&
14302              ((cr->fils.kek &&
14303                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
14304                        cr->fils.kek)) ||
14305               (cr->fils.pmk &&
14306                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
14307               (cr->fils.pmkid &&
14308                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
14309                 goto nla_put_failure;
14310
14311         genlmsg_end(msg, hdr);
14312
14313         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14314                                 NL80211_MCGRP_MLME, gfp);
14315         return;
14316
14317  nla_put_failure:
14318         nlmsg_free(msg);
14319 }
14320
14321 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
14322                          struct net_device *netdev,
14323                          struct cfg80211_roam_info *info, gfp_t gfp)
14324 {
14325         struct sk_buff *msg;
14326         void *hdr;
14327         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
14328
14329         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
14330                         info->fils.kek_len + info->fils.pmk_len +
14331                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
14332         if (!msg)
14333                 return;
14334
14335         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
14336         if (!hdr) {
14337                 nlmsg_free(msg);
14338                 return;
14339         }
14340
14341         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14342             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14343             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
14344             (info->req_ie &&
14345              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
14346                      info->req_ie)) ||
14347             (info->resp_ie &&
14348              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
14349                      info->resp_ie)) ||
14350             (info->fils.update_erp_next_seq_num &&
14351              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
14352                          info->fils.erp_next_seq_num)) ||
14353             (info->fils.kek &&
14354              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
14355                      info->fils.kek)) ||
14356             (info->fils.pmk &&
14357              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
14358             (info->fils.pmkid &&
14359              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
14360                 goto nla_put_failure;
14361
14362         genlmsg_end(msg, hdr);
14363
14364         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14365                                 NL80211_MCGRP_MLME, gfp);
14366         return;
14367
14368  nla_put_failure:
14369         nlmsg_free(msg);
14370 }
14371
14372 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
14373                                   struct net_device *netdev, const u8 *bssid)
14374 {
14375         struct sk_buff *msg;
14376         void *hdr;
14377
14378         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14379         if (!msg)
14380                 return;
14381
14382         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
14383         if (!hdr) {
14384                 nlmsg_free(msg);
14385                 return;
14386         }
14387
14388         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14389                 goto nla_put_failure;
14390
14391         genlmsg_end(msg, hdr);
14392
14393         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14394                                 NL80211_MCGRP_MLME, GFP_KERNEL);
14395         return;
14396
14397  nla_put_failure:
14398         nlmsg_free(msg);
14399 }
14400
14401 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
14402                                struct net_device *netdev, u16 reason,
14403                                const u8 *ie, size_t ie_len, bool from_ap)
14404 {
14405         struct sk_buff *msg;
14406         void *hdr;
14407
14408         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
14409         if (!msg)
14410                 return;
14411
14412         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
14413         if (!hdr) {
14414                 nlmsg_free(msg);
14415                 return;
14416         }
14417
14418         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14419             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14420             (reason &&
14421              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
14422             (from_ap &&
14423              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
14424             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
14425                 goto nla_put_failure;
14426
14427         genlmsg_end(msg, hdr);
14428
14429         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14430                                 NL80211_MCGRP_MLME, GFP_KERNEL);
14431         return;
14432
14433  nla_put_failure:
14434         nlmsg_free(msg);
14435 }
14436
14437 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
14438                              struct net_device *netdev, const u8 *bssid,
14439                              gfp_t gfp)
14440 {
14441         struct sk_buff *msg;
14442         void *hdr;
14443
14444         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14445         if (!msg)
14446                 return;
14447
14448         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
14449         if (!hdr) {
14450                 nlmsg_free(msg);
14451                 return;
14452         }
14453
14454         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14455             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14456             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14457                 goto nla_put_failure;
14458
14459         genlmsg_end(msg, hdr);
14460
14461         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14462                                 NL80211_MCGRP_MLME, gfp);
14463         return;
14464
14465  nla_put_failure:
14466         nlmsg_free(msg);
14467 }
14468
14469 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
14470                                         const u8* ie, u8 ie_len, gfp_t gfp)
14471 {
14472         struct wireless_dev *wdev = dev->ieee80211_ptr;
14473         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14474         struct sk_buff *msg;
14475         void *hdr;
14476
14477         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
14478                 return;
14479
14480         trace_cfg80211_notify_new_peer_candidate(dev, addr);
14481
14482         msg = nlmsg_new(100 + ie_len, gfp);
14483         if (!msg)
14484                 return;
14485
14486         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
14487         if (!hdr) {
14488                 nlmsg_free(msg);
14489                 return;
14490         }
14491
14492         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14493             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14494             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14495             (ie_len && ie &&
14496              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
14497                 goto nla_put_failure;
14498
14499         genlmsg_end(msg, hdr);
14500
14501         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14502                                 NL80211_MCGRP_MLME, gfp);
14503         return;
14504
14505  nla_put_failure:
14506         nlmsg_free(msg);
14507 }
14508 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
14509
14510 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
14511                                  struct net_device *netdev, const u8 *addr,
14512                                  enum nl80211_key_type key_type, int key_id,
14513                                  const u8 *tsc, gfp_t gfp)
14514 {
14515         struct sk_buff *msg;
14516         void *hdr;
14517
14518         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14519         if (!msg)
14520                 return;
14521
14522         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
14523         if (!hdr) {
14524                 nlmsg_free(msg);
14525                 return;
14526         }
14527
14528         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14529             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14530             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
14531             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
14532             (key_id != -1 &&
14533              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
14534             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
14535                 goto nla_put_failure;
14536
14537         genlmsg_end(msg, hdr);
14538
14539         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14540                                 NL80211_MCGRP_MLME, gfp);
14541         return;
14542
14543  nla_put_failure:
14544         nlmsg_free(msg);
14545 }
14546
14547 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
14548                                     struct ieee80211_channel *channel_before,
14549                                     struct ieee80211_channel *channel_after)
14550 {
14551         struct sk_buff *msg;
14552         void *hdr;
14553         struct nlattr *nl_freq;
14554
14555         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
14556         if (!msg)
14557                 return;
14558
14559         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
14560         if (!hdr) {
14561                 nlmsg_free(msg);
14562                 return;
14563         }
14564
14565         /*
14566          * Since we are applying the beacon hint to a wiphy we know its
14567          * wiphy_idx is valid
14568          */
14569         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
14570                 goto nla_put_failure;
14571
14572         /* Before */
14573         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
14574         if (!nl_freq)
14575                 goto nla_put_failure;
14576
14577         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
14578                 goto nla_put_failure;
14579         nla_nest_end(msg, nl_freq);
14580
14581         /* After */
14582         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
14583         if (!nl_freq)
14584                 goto nla_put_failure;
14585
14586         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
14587                 goto nla_put_failure;
14588         nla_nest_end(msg, nl_freq);
14589
14590         genlmsg_end(msg, hdr);
14591
14592         rcu_read_lock();
14593         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14594                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14595         rcu_read_unlock();
14596
14597         return;
14598
14599 nla_put_failure:
14600         nlmsg_free(msg);
14601 }
14602
14603 static void nl80211_send_remain_on_chan_event(
14604         int cmd, struct cfg80211_registered_device *rdev,
14605         struct wireless_dev *wdev, u64 cookie,
14606         struct ieee80211_channel *chan,
14607         unsigned int duration, gfp_t gfp)
14608 {
14609         struct sk_buff *msg;
14610         void *hdr;
14611
14612         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14613         if (!msg)
14614                 return;
14615
14616         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14617         if (!hdr) {
14618                 nlmsg_free(msg);
14619                 return;
14620         }
14621
14622         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14623             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14624                                          wdev->netdev->ifindex)) ||
14625             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14626                               NL80211_ATTR_PAD) ||
14627             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
14628             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
14629                         NL80211_CHAN_NO_HT) ||
14630             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14631                               NL80211_ATTR_PAD))
14632                 goto nla_put_failure;
14633
14634         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
14635             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
14636                 goto nla_put_failure;
14637
14638         genlmsg_end(msg, hdr);
14639
14640         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14641                                 NL80211_MCGRP_MLME, gfp);
14642         return;
14643
14644  nla_put_failure:
14645         nlmsg_free(msg);
14646 }
14647
14648 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
14649                                struct ieee80211_channel *chan,
14650                                unsigned int duration, gfp_t gfp)
14651 {
14652         struct wiphy *wiphy = wdev->wiphy;
14653         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14654
14655         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
14656         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
14657                                           rdev, wdev, cookie, chan,
14658                                           duration, gfp);
14659 }
14660 EXPORT_SYMBOL(cfg80211_ready_on_channel);
14661
14662 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
14663                                         struct ieee80211_channel *chan,
14664                                         gfp_t gfp)
14665 {
14666         struct wiphy *wiphy = wdev->wiphy;
14667         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14668
14669         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
14670         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14671                                           rdev, wdev, cookie, chan, 0, gfp);
14672 }
14673 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
14674
14675 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
14676                       struct station_info *sinfo, gfp_t gfp)
14677 {
14678         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14679         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14680         struct sk_buff *msg;
14681
14682         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
14683
14684         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14685         if (!msg)
14686                 return;
14687
14688         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
14689                                  rdev, dev, mac_addr, sinfo) < 0) {
14690                 nlmsg_free(msg);
14691                 return;
14692         }
14693
14694         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14695                                 NL80211_MCGRP_MLME, gfp);
14696 }
14697 EXPORT_SYMBOL(cfg80211_new_sta);
14698
14699 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
14700                             struct station_info *sinfo, gfp_t gfp)
14701 {
14702         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14703         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14704         struct sk_buff *msg;
14705         struct station_info empty_sinfo = {};
14706
14707         if (!sinfo)
14708                 sinfo = &empty_sinfo;
14709
14710         trace_cfg80211_del_sta(dev, mac_addr);
14711
14712         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14713         if (!msg) {
14714                 cfg80211_sinfo_release_content(sinfo);
14715                 return;
14716         }
14717
14718         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
14719                                  rdev, dev, mac_addr, sinfo) < 0) {
14720                 nlmsg_free(msg);
14721                 return;
14722         }
14723
14724         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14725                                 NL80211_MCGRP_MLME, gfp);
14726 }
14727 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
14728
14729 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
14730                           enum nl80211_connect_failed_reason reason,
14731                           gfp_t gfp)
14732 {
14733         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14734         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14735         struct sk_buff *msg;
14736         void *hdr;
14737
14738         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
14739         if (!msg)
14740                 return;
14741
14742         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
14743         if (!hdr) {
14744                 nlmsg_free(msg);
14745                 return;
14746         }
14747
14748         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14749             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
14750             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
14751                 goto nla_put_failure;
14752
14753         genlmsg_end(msg, hdr);
14754
14755         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14756                                 NL80211_MCGRP_MLME, gfp);
14757         return;
14758
14759  nla_put_failure:
14760         nlmsg_free(msg);
14761 }
14762 EXPORT_SYMBOL(cfg80211_conn_failed);
14763
14764 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
14765                                        const u8 *addr, gfp_t gfp)
14766 {
14767         struct wireless_dev *wdev = dev->ieee80211_ptr;
14768         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14769         struct sk_buff *msg;
14770         void *hdr;
14771         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
14772
14773         if (!nlportid)
14774                 return false;
14775
14776         msg = nlmsg_new(100, gfp);
14777         if (!msg)
14778                 return true;
14779
14780         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14781         if (!hdr) {
14782                 nlmsg_free(msg);
14783                 return true;
14784         }
14785
14786         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14787             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14788             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14789                 goto nla_put_failure;
14790
14791         genlmsg_end(msg, hdr);
14792         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14793         return true;
14794
14795  nla_put_failure:
14796         nlmsg_free(msg);
14797         return true;
14798 }
14799
14800 bool cfg80211_rx_spurious_frame(struct net_device *dev,
14801                                 const u8 *addr, gfp_t gfp)
14802 {
14803         struct wireless_dev *wdev = dev->ieee80211_ptr;
14804         bool ret;
14805
14806         trace_cfg80211_rx_spurious_frame(dev, addr);
14807
14808         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14809                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
14810                 trace_cfg80211_return_bool(false);
14811                 return false;
14812         }
14813         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
14814                                          addr, gfp);
14815         trace_cfg80211_return_bool(ret);
14816         return ret;
14817 }
14818 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
14819
14820 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
14821                                         const u8 *addr, gfp_t gfp)
14822 {
14823         struct wireless_dev *wdev = dev->ieee80211_ptr;
14824         bool ret;
14825
14826         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
14827
14828         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14829                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
14830                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
14831                 trace_cfg80211_return_bool(false);
14832                 return false;
14833         }
14834         ret = __nl80211_unexpected_frame(dev,
14835                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
14836                                          addr, gfp);
14837         trace_cfg80211_return_bool(ret);
14838         return ret;
14839 }
14840 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
14841
14842 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
14843                       struct wireless_dev *wdev, u32 nlportid,
14844                       int freq, int sig_dbm,
14845                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
14846 {
14847         struct net_device *netdev = wdev->netdev;
14848         struct sk_buff *msg;
14849         void *hdr;
14850
14851         msg = nlmsg_new(100 + len, gfp);
14852         if (!msg)
14853                 return -ENOMEM;
14854
14855         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14856         if (!hdr) {
14857                 nlmsg_free(msg);
14858                 return -ENOMEM;
14859         }
14860
14861         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14862             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14863                                         netdev->ifindex)) ||
14864             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14865                               NL80211_ATTR_PAD) ||
14866             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
14867             (sig_dbm &&
14868              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14869             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14870             (flags &&
14871              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
14872                 goto nla_put_failure;
14873
14874         genlmsg_end(msg, hdr);
14875
14876         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14877
14878  nla_put_failure:
14879         nlmsg_free(msg);
14880         return -ENOBUFS;
14881 }
14882
14883 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
14884                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
14885 {
14886         struct wiphy *wiphy = wdev->wiphy;
14887         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14888         struct net_device *netdev = wdev->netdev;
14889         struct sk_buff *msg;
14890         void *hdr;
14891
14892         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
14893
14894         msg = nlmsg_new(100 + len, gfp);
14895         if (!msg)
14896                 return;
14897
14898         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
14899         if (!hdr) {
14900                 nlmsg_free(msg);
14901                 return;
14902         }
14903
14904         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14905             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14906                                    netdev->ifindex)) ||
14907             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14908                               NL80211_ATTR_PAD) ||
14909             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14910             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14911                               NL80211_ATTR_PAD) ||
14912             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
14913                 goto nla_put_failure;
14914
14915         genlmsg_end(msg, hdr);
14916
14917         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14918                                 NL80211_MCGRP_MLME, gfp);
14919         return;
14920
14921  nla_put_failure:
14922         nlmsg_free(msg);
14923 }
14924 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
14925
14926 static int __nl80211_rx_control_port(struct net_device *dev,
14927                                      struct sk_buff *skb,
14928                                      bool unencrypted, gfp_t gfp)
14929 {
14930         struct wireless_dev *wdev = dev->ieee80211_ptr;
14931         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14932         struct ethhdr *ehdr = eth_hdr(skb);
14933         const u8 *addr = ehdr->h_source;
14934         u16 proto = be16_to_cpu(skb->protocol);
14935         struct sk_buff *msg;
14936         void *hdr;
14937         struct nlattr *frame;
14938
14939         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
14940
14941         if (!nlportid)
14942                 return -ENOENT;
14943
14944         msg = nlmsg_new(100 + skb->len, gfp);
14945         if (!msg)
14946                 return -ENOMEM;
14947
14948         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
14949         if (!hdr) {
14950                 nlmsg_free(msg);
14951                 return -ENOBUFS;
14952         }
14953
14954         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14955             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14956             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14957                               NL80211_ATTR_PAD) ||
14958             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14959             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
14960             (unencrypted && nla_put_flag(msg,
14961                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
14962                 goto nla_put_failure;
14963
14964         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
14965         if (!frame)
14966                 goto nla_put_failure;
14967
14968         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
14969         genlmsg_end(msg, hdr);
14970
14971         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14972
14973  nla_put_failure:
14974         nlmsg_free(msg);
14975         return -ENOBUFS;
14976 }
14977
14978 bool cfg80211_rx_control_port(struct net_device *dev,
14979                               struct sk_buff *skb, bool unencrypted)
14980 {
14981         int ret;
14982
14983         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
14984         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
14985         trace_cfg80211_return_bool(ret == 0);
14986         return ret == 0;
14987 }
14988 EXPORT_SYMBOL(cfg80211_rx_control_port);
14989
14990 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
14991                                             const char *mac, gfp_t gfp)
14992 {
14993         struct wireless_dev *wdev = dev->ieee80211_ptr;
14994         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14995         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14996         void **cb;
14997
14998         if (!msg)
14999                 return NULL;
15000
15001         cb = (void **)msg->cb;
15002
15003         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
15004         if (!cb[0]) {
15005                 nlmsg_free(msg);
15006                 return NULL;
15007         }
15008
15009         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15010             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15011                 goto nla_put_failure;
15012
15013         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15014                 goto nla_put_failure;
15015
15016         cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
15017         if (!cb[1])
15018                 goto nla_put_failure;
15019
15020         cb[2] = rdev;
15021
15022         return msg;
15023  nla_put_failure:
15024         nlmsg_free(msg);
15025         return NULL;
15026 }
15027
15028 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
15029 {
15030         void **cb = (void **)msg->cb;
15031         struct cfg80211_registered_device *rdev = cb[2];
15032
15033         nla_nest_end(msg, cb[1]);
15034         genlmsg_end(msg, cb[0]);
15035
15036         memset(msg->cb, 0, sizeof(msg->cb));
15037
15038         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15039                                 NL80211_MCGRP_MLME, gfp);
15040 }
15041
15042 void cfg80211_cqm_rssi_notify(struct net_device *dev,
15043                               enum nl80211_cqm_rssi_threshold_event rssi_event,
15044                               s32 rssi_level, gfp_t gfp)
15045 {
15046         struct sk_buff *msg;
15047         struct wireless_dev *wdev = dev->ieee80211_ptr;
15048         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15049
15050         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
15051
15052         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
15053                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
15054                 return;
15055
15056         if (wdev->cqm_config) {
15057                 wdev->cqm_config->last_rssi_event_value = rssi_level;
15058
15059                 cfg80211_cqm_rssi_update(rdev, dev);
15060
15061                 if (rssi_level == 0)
15062                         rssi_level = wdev->cqm_config->last_rssi_event_value;
15063         }
15064
15065         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15066         if (!msg)
15067                 return;
15068
15069         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
15070                         rssi_event))
15071                 goto nla_put_failure;
15072
15073         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
15074                                       rssi_level))
15075                 goto nla_put_failure;
15076
15077         cfg80211_send_cqm(msg, gfp);
15078
15079         return;
15080
15081  nla_put_failure:
15082         nlmsg_free(msg);
15083 }
15084 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
15085
15086 void cfg80211_cqm_txe_notify(struct net_device *dev,
15087                              const u8 *peer, u32 num_packets,
15088                              u32 rate, u32 intvl, gfp_t gfp)
15089 {
15090         struct sk_buff *msg;
15091
15092         msg = cfg80211_prepare_cqm(dev, peer, gfp);
15093         if (!msg)
15094                 return;
15095
15096         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
15097                 goto nla_put_failure;
15098
15099         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
15100                 goto nla_put_failure;
15101
15102         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
15103                 goto nla_put_failure;
15104
15105         cfg80211_send_cqm(msg, gfp);
15106         return;
15107
15108  nla_put_failure:
15109         nlmsg_free(msg);
15110 }
15111 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
15112
15113 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
15114                                  const u8 *peer, u32 num_packets, gfp_t gfp)
15115 {
15116         struct sk_buff *msg;
15117
15118         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
15119
15120         msg = cfg80211_prepare_cqm(dev, peer, gfp);
15121         if (!msg)
15122                 return;
15123
15124         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
15125                 goto nla_put_failure;
15126
15127         cfg80211_send_cqm(msg, gfp);
15128         return;
15129
15130  nla_put_failure:
15131         nlmsg_free(msg);
15132 }
15133 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
15134
15135 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
15136 {
15137         struct sk_buff *msg;
15138
15139         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15140         if (!msg)
15141                 return;
15142
15143         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
15144                 goto nla_put_failure;
15145
15146         cfg80211_send_cqm(msg, gfp);
15147         return;
15148
15149  nla_put_failure:
15150         nlmsg_free(msg);
15151 }
15152 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
15153
15154 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
15155                                      struct net_device *netdev, const u8 *bssid,
15156                                      const u8 *replay_ctr, gfp_t gfp)
15157 {
15158         struct sk_buff *msg;
15159         struct nlattr *rekey_attr;
15160         void *hdr;
15161
15162         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15163         if (!msg)
15164                 return;
15165
15166         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
15167         if (!hdr) {
15168                 nlmsg_free(msg);
15169                 return;
15170         }
15171
15172         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15173             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15174             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15175                 goto nla_put_failure;
15176
15177         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
15178         if (!rekey_attr)
15179                 goto nla_put_failure;
15180
15181         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
15182                     NL80211_REPLAY_CTR_LEN, replay_ctr))
15183                 goto nla_put_failure;
15184
15185         nla_nest_end(msg, rekey_attr);
15186
15187         genlmsg_end(msg, hdr);
15188
15189         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15190                                 NL80211_MCGRP_MLME, gfp);
15191         return;
15192
15193  nla_put_failure:
15194         nlmsg_free(msg);
15195 }
15196
15197 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
15198                                const u8 *replay_ctr, gfp_t gfp)
15199 {
15200         struct wireless_dev *wdev = dev->ieee80211_ptr;
15201         struct wiphy *wiphy = wdev->wiphy;
15202         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15203
15204         trace_cfg80211_gtk_rekey_notify(dev, bssid);
15205         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
15206 }
15207 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
15208
15209 static void
15210 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
15211                                struct net_device *netdev, int index,
15212                                const u8 *bssid, bool preauth, gfp_t gfp)
15213 {
15214         struct sk_buff *msg;
15215         struct nlattr *attr;
15216         void *hdr;
15217
15218         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15219         if (!msg)
15220                 return;
15221
15222         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
15223         if (!hdr) {
15224                 nlmsg_free(msg);
15225                 return;
15226         }
15227
15228         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15229             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
15230                 goto nla_put_failure;
15231
15232         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
15233         if (!attr)
15234                 goto nla_put_failure;
15235
15236         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
15237             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
15238             (preauth &&
15239              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
15240                 goto nla_put_failure;
15241
15242         nla_nest_end(msg, attr);
15243
15244         genlmsg_end(msg, hdr);
15245
15246         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15247                                 NL80211_MCGRP_MLME, gfp);
15248         return;
15249
15250  nla_put_failure:
15251         nlmsg_free(msg);
15252 }
15253
15254 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
15255                                      const u8 *bssid, bool preauth, gfp_t gfp)
15256 {
15257         struct wireless_dev *wdev = dev->ieee80211_ptr;
15258         struct wiphy *wiphy = wdev->wiphy;
15259         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15260
15261         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
15262         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
15263 }
15264 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
15265
15266 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
15267                                      struct net_device *netdev,
15268                                      struct cfg80211_chan_def *chandef,
15269                                      gfp_t gfp,
15270                                      enum nl80211_commands notif,
15271                                      u8 count)
15272 {
15273         struct sk_buff *msg;
15274         void *hdr;
15275
15276         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15277         if (!msg)
15278                 return;
15279
15280         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
15281         if (!hdr) {
15282                 nlmsg_free(msg);
15283                 return;
15284         }
15285
15286         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
15287                 goto nla_put_failure;
15288
15289         if (nl80211_send_chandef(msg, chandef))
15290                 goto nla_put_failure;
15291
15292         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
15293             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
15294                         goto nla_put_failure;
15295
15296         genlmsg_end(msg, hdr);
15297
15298         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15299                                 NL80211_MCGRP_MLME, gfp);
15300         return;
15301
15302  nla_put_failure:
15303         nlmsg_free(msg);
15304 }
15305
15306 void cfg80211_ch_switch_notify(struct net_device *dev,
15307                                struct cfg80211_chan_def *chandef)
15308 {
15309         struct wireless_dev *wdev = dev->ieee80211_ptr;
15310         struct wiphy *wiphy = wdev->wiphy;
15311         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15312
15313         ASSERT_WDEV_LOCK(wdev);
15314
15315         trace_cfg80211_ch_switch_notify(dev, chandef);
15316
15317         wdev->chandef = *chandef;
15318         wdev->preset_chandef = *chandef;
15319         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
15320                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
15321 }
15322 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
15323
15324 void cfg80211_ch_switch_started_notify(struct net_device *dev,
15325                                        struct cfg80211_chan_def *chandef,
15326                                        u8 count)
15327 {
15328         struct wireless_dev *wdev = dev->ieee80211_ptr;
15329         struct wiphy *wiphy = wdev->wiphy;
15330         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15331
15332         trace_cfg80211_ch_switch_started_notify(dev, chandef);
15333
15334         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
15335                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
15336 }
15337 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
15338
15339 void
15340 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
15341                      const struct cfg80211_chan_def *chandef,
15342                      enum nl80211_radar_event event,
15343                      struct net_device *netdev, gfp_t gfp)
15344 {
15345         struct sk_buff *msg;
15346         void *hdr;
15347
15348         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15349         if (!msg)
15350                 return;
15351
15352         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
15353         if (!hdr) {
15354                 nlmsg_free(msg);
15355                 return;
15356         }
15357
15358         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
15359                 goto nla_put_failure;
15360
15361         /* NOP and radar events don't need a netdev parameter */
15362         if (netdev) {
15363                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
15364
15365                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15366                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15367                                       NL80211_ATTR_PAD))
15368                         goto nla_put_failure;
15369         }
15370
15371         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
15372                 goto nla_put_failure;
15373
15374         if (nl80211_send_chandef(msg, chandef))
15375                 goto nla_put_failure;
15376
15377         genlmsg_end(msg, hdr);
15378
15379         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15380                                 NL80211_MCGRP_MLME, gfp);
15381         return;
15382
15383  nla_put_failure:
15384         nlmsg_free(msg);
15385 }
15386
15387 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
15388                                        struct sta_opmode_info *sta_opmode,
15389                                        gfp_t gfp)
15390 {
15391         struct sk_buff *msg;
15392         struct wireless_dev *wdev = dev->ieee80211_ptr;
15393         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15394         void *hdr;
15395
15396         if (WARN_ON(!mac))
15397                 return;
15398
15399         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15400         if (!msg)
15401                 return;
15402
15403         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
15404         if (!hdr) {
15405                 nlmsg_free(msg);
15406                 return;
15407         }
15408
15409         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
15410                 goto nla_put_failure;
15411
15412         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15413                 goto nla_put_failure;
15414
15415         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15416                 goto nla_put_failure;
15417
15418         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
15419             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
15420                 goto nla_put_failure;
15421
15422         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
15423             nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
15424                 goto nla_put_failure;
15425
15426         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
15427             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
15428                 goto nla_put_failure;
15429
15430         genlmsg_end(msg, hdr);
15431
15432         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15433                                 NL80211_MCGRP_MLME, gfp);
15434
15435         return;
15436
15437 nla_put_failure:
15438         nlmsg_free(msg);
15439 }
15440 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
15441
15442 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
15443                            u64 cookie, bool acked, s32 ack_signal,
15444                            bool is_valid_ack_signal, gfp_t gfp)
15445 {
15446         struct wireless_dev *wdev = dev->ieee80211_ptr;
15447         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15448         struct sk_buff *msg;
15449         void *hdr;
15450
15451         trace_cfg80211_probe_status(dev, addr, cookie, acked);
15452
15453         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15454
15455         if (!msg)
15456                 return;
15457
15458         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
15459         if (!hdr) {
15460                 nlmsg_free(msg);
15461                 return;
15462         }
15463
15464         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15465             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15466             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15467             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15468                               NL80211_ATTR_PAD) ||
15469             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
15470             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
15471                                                 ack_signal)))
15472                 goto nla_put_failure;
15473
15474         genlmsg_end(msg, hdr);
15475
15476         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15477                                 NL80211_MCGRP_MLME, gfp);
15478         return;
15479
15480  nla_put_failure:
15481         nlmsg_free(msg);
15482 }
15483 EXPORT_SYMBOL(cfg80211_probe_status);
15484
15485 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
15486                                  const u8 *frame, size_t len,
15487                                  int freq, int sig_dbm)
15488 {
15489         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15490         struct sk_buff *msg;
15491         void *hdr;
15492         struct cfg80211_beacon_registration *reg;
15493
15494         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
15495
15496         spin_lock_bh(&rdev->beacon_registrations_lock);
15497         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
15498                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
15499                 if (!msg) {
15500                         spin_unlock_bh(&rdev->beacon_registrations_lock);
15501                         return;
15502                 }
15503
15504                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
15505                 if (!hdr)
15506                         goto nla_put_failure;
15507
15508                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15509                     (freq &&
15510                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
15511                     (sig_dbm &&
15512                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
15513                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
15514                         goto nla_put_failure;
15515
15516                 genlmsg_end(msg, hdr);
15517
15518                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
15519         }
15520         spin_unlock_bh(&rdev->beacon_registrations_lock);
15521         return;
15522
15523  nla_put_failure:
15524         spin_unlock_bh(&rdev->beacon_registrations_lock);
15525         nlmsg_free(msg);
15526 }
15527 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
15528
15529 #ifdef CONFIG_PM
15530 static int cfg80211_net_detect_results(struct sk_buff *msg,
15531                                        struct cfg80211_wowlan_wakeup *wakeup)
15532 {
15533         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
15534         struct nlattr *nl_results, *nl_match, *nl_freqs;
15535         int i, j;
15536
15537         nl_results = nla_nest_start(
15538                 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
15539         if (!nl_results)
15540                 return -EMSGSIZE;
15541
15542         for (i = 0; i < nd->n_matches; i++) {
15543                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
15544
15545                 nl_match = nla_nest_start(msg, i);
15546                 if (!nl_match)
15547                         break;
15548
15549                 /* The SSID attribute is optional in nl80211, but for
15550                  * simplicity reasons it's always present in the
15551                  * cfg80211 structure.  If a driver can't pass the
15552                  * SSID, that needs to be changed.  A zero length SSID
15553                  * is still a valid SSID (wildcard), so it cannot be
15554                  * used for this purpose.
15555                  */
15556                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
15557                             match->ssid.ssid)) {
15558                         nla_nest_cancel(msg, nl_match);
15559                         goto out;
15560                 }
15561
15562                 if (match->n_channels) {
15563                         nl_freqs = nla_nest_start(
15564                                 msg, NL80211_ATTR_SCAN_FREQUENCIES);
15565                         if (!nl_freqs) {
15566                                 nla_nest_cancel(msg, nl_match);
15567                                 goto out;
15568                         }
15569
15570                         for (j = 0; j < match->n_channels; j++) {
15571                                 if (nla_put_u32(msg, j, match->channels[j])) {
15572                                         nla_nest_cancel(msg, nl_freqs);
15573                                         nla_nest_cancel(msg, nl_match);
15574                                         goto out;
15575                                 }
15576                         }
15577
15578                         nla_nest_end(msg, nl_freqs);
15579                 }
15580
15581                 nla_nest_end(msg, nl_match);
15582         }
15583
15584 out:
15585         nla_nest_end(msg, nl_results);
15586         return 0;
15587 }
15588
15589 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
15590                                    struct cfg80211_wowlan_wakeup *wakeup,
15591                                    gfp_t gfp)
15592 {
15593         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15594         struct sk_buff *msg;
15595         void *hdr;
15596         int size = 200;
15597
15598         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
15599
15600         if (wakeup)
15601                 size += wakeup->packet_present_len;
15602
15603         msg = nlmsg_new(size, gfp);
15604         if (!msg)
15605                 return;
15606
15607         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
15608         if (!hdr)
15609                 goto free_msg;
15610
15611         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15612             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15613                               NL80211_ATTR_PAD))
15614                 goto free_msg;
15615
15616         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15617                                         wdev->netdev->ifindex))
15618                 goto free_msg;
15619
15620         if (wakeup) {
15621                 struct nlattr *reasons;
15622
15623                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
15624                 if (!reasons)
15625                         goto free_msg;
15626
15627                 if (wakeup->disconnect &&
15628                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
15629                         goto free_msg;
15630                 if (wakeup->magic_pkt &&
15631                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
15632                         goto free_msg;
15633                 if (wakeup->gtk_rekey_failure &&
15634                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
15635                         goto free_msg;
15636                 if (wakeup->eap_identity_req &&
15637                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
15638                         goto free_msg;
15639                 if (wakeup->four_way_handshake &&
15640                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
15641                         goto free_msg;
15642                 if (wakeup->rfkill_release &&
15643                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
15644                         goto free_msg;
15645
15646                 if (wakeup->pattern_idx >= 0 &&
15647                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
15648                                 wakeup->pattern_idx))
15649                         goto free_msg;
15650
15651                 if (wakeup->tcp_match &&
15652                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
15653                         goto free_msg;
15654
15655                 if (wakeup->tcp_connlost &&
15656                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
15657                         goto free_msg;
15658
15659                 if (wakeup->tcp_nomoretokens &&
15660                     nla_put_flag(msg,
15661                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
15662                         goto free_msg;
15663
15664                 if (wakeup->packet) {
15665                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
15666                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
15667
15668                         if (!wakeup->packet_80211) {
15669                                 pkt_attr =
15670                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
15671                                 len_attr =
15672                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
15673                         }
15674
15675                         if (wakeup->packet_len &&
15676                             nla_put_u32(msg, len_attr, wakeup->packet_len))
15677                                 goto free_msg;
15678
15679                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
15680                                     wakeup->packet))
15681                                 goto free_msg;
15682                 }
15683
15684                 if (wakeup->net_detect &&
15685                     cfg80211_net_detect_results(msg, wakeup))
15686                                 goto free_msg;
15687
15688                 nla_nest_end(msg, reasons);
15689         }
15690
15691         genlmsg_end(msg, hdr);
15692
15693         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15694                                 NL80211_MCGRP_MLME, gfp);
15695         return;
15696
15697  free_msg:
15698         nlmsg_free(msg);
15699 }
15700 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
15701 #endif
15702
15703 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
15704                                 enum nl80211_tdls_operation oper,
15705                                 u16 reason_code, gfp_t gfp)
15706 {
15707         struct wireless_dev *wdev = dev->ieee80211_ptr;
15708         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15709         struct sk_buff *msg;
15710         void *hdr;
15711
15712         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
15713                                          reason_code);
15714
15715         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15716         if (!msg)
15717                 return;
15718
15719         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
15720         if (!hdr) {
15721                 nlmsg_free(msg);
15722                 return;
15723         }
15724
15725         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15726             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15727             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
15728             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
15729             (reason_code > 0 &&
15730              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
15731                 goto nla_put_failure;
15732
15733         genlmsg_end(msg, hdr);
15734
15735         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15736                                 NL80211_MCGRP_MLME, gfp);
15737         return;
15738
15739  nla_put_failure:
15740         nlmsg_free(msg);
15741 }
15742 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
15743
15744 static int nl80211_netlink_notify(struct notifier_block * nb,
15745                                   unsigned long state,
15746                                   void *_notify)
15747 {
15748         struct netlink_notify *notify = _notify;
15749         struct cfg80211_registered_device *rdev;
15750         struct wireless_dev *wdev;
15751         struct cfg80211_beacon_registration *reg, *tmp;
15752
15753         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
15754                 return NOTIFY_DONE;
15755
15756         rcu_read_lock();
15757
15758         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
15759                 struct cfg80211_sched_scan_request *sched_scan_req;
15760
15761                 list_for_each_entry_rcu(sched_scan_req,
15762                                         &rdev->sched_scan_req_list,
15763                                         list) {
15764                         if (sched_scan_req->owner_nlportid == notify->portid) {
15765                                 sched_scan_req->nl_owner_dead = true;
15766                                 schedule_work(&rdev->sched_scan_stop_wk);
15767                         }
15768                 }
15769
15770                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
15771                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
15772
15773                         if (wdev->owner_nlportid == notify->portid) {
15774                                 wdev->nl_owner_dead = true;
15775                                 schedule_work(&rdev->destroy_work);
15776                         } else if (wdev->conn_owner_nlportid == notify->portid) {
15777                                 schedule_work(&wdev->disconnect_wk);
15778                         }
15779                 }
15780
15781                 spin_lock_bh(&rdev->beacon_registrations_lock);
15782                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
15783                                          list) {
15784                         if (reg->nlportid == notify->portid) {
15785                                 list_del(&reg->list);
15786                                 kfree(reg);
15787                                 break;
15788                         }
15789                 }
15790                 spin_unlock_bh(&rdev->beacon_registrations_lock);
15791         }
15792
15793         rcu_read_unlock();
15794
15795         /*
15796          * It is possible that the user space process that is controlling the
15797          * indoor setting disappeared, so notify the regulatory core.
15798          */
15799         regulatory_netlink_notify(notify->portid);
15800         return NOTIFY_OK;
15801 }
15802
15803 static struct notifier_block nl80211_netlink_notifier = {
15804         .notifier_call = nl80211_netlink_notify,
15805 };
15806
15807 void cfg80211_ft_event(struct net_device *netdev,
15808                        struct cfg80211_ft_event_params *ft_event)
15809 {
15810         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
15811         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15812         struct sk_buff *msg;
15813         void *hdr;
15814
15815         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
15816
15817         if (!ft_event->target_ap)
15818                 return;
15819
15820         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
15821                         GFP_KERNEL);
15822         if (!msg)
15823                 return;
15824
15825         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
15826         if (!hdr)
15827                 goto out;
15828
15829         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15830             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15831             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
15832                 goto out;
15833
15834         if (ft_event->ies &&
15835             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
15836                 goto out;
15837         if (ft_event->ric_ies &&
15838             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
15839                     ft_event->ric_ies))
15840                 goto out;
15841
15842         genlmsg_end(msg, hdr);
15843
15844         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15845                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15846         return;
15847  out:
15848         nlmsg_free(msg);
15849 }
15850 EXPORT_SYMBOL(cfg80211_ft_event);
15851
15852 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
15853 {
15854         struct cfg80211_registered_device *rdev;
15855         struct sk_buff *msg;
15856         void *hdr;
15857         u32 nlportid;
15858
15859         rdev = wiphy_to_rdev(wdev->wiphy);
15860         if (!rdev->crit_proto_nlportid)
15861                 return;
15862
15863         nlportid = rdev->crit_proto_nlportid;
15864         rdev->crit_proto_nlportid = 0;
15865
15866         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15867         if (!msg)
15868                 return;
15869
15870         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
15871         if (!hdr)
15872                 goto nla_put_failure;
15873
15874         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15875             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15876                               NL80211_ATTR_PAD))
15877                 goto nla_put_failure;
15878
15879         genlmsg_end(msg, hdr);
15880
15881         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15882         return;
15883
15884  nla_put_failure:
15885         nlmsg_free(msg);
15886 }
15887 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
15888
15889 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
15890 {
15891         struct wiphy *wiphy = wdev->wiphy;
15892         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15893         struct sk_buff *msg;
15894         void *hdr;
15895
15896         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15897         if (!msg)
15898                 return;
15899
15900         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
15901         if (!hdr)
15902                 goto out;
15903
15904         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15905             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
15906             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15907                               NL80211_ATTR_PAD))
15908                 goto out;
15909
15910         genlmsg_end(msg, hdr);
15911
15912         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
15913                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15914         return;
15915  out:
15916         nlmsg_free(msg);
15917 }
15918
15919 int cfg80211_external_auth_request(struct net_device *dev,
15920                                    struct cfg80211_external_auth_params *params,
15921                                    gfp_t gfp)
15922 {
15923         struct wireless_dev *wdev = dev->ieee80211_ptr;
15924         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15925         struct sk_buff *msg;
15926         void *hdr;
15927
15928         if (!wdev->conn_owner_nlportid)
15929                 return -EINVAL;
15930
15931         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15932         if (!msg)
15933                 return -ENOMEM;
15934
15935         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
15936         if (!hdr)
15937                 goto nla_put_failure;
15938
15939         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15940             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15941             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
15942             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
15943                         params->action) ||
15944             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
15945             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
15946                     params->ssid.ssid))
15947                 goto nla_put_failure;
15948
15949         genlmsg_end(msg, hdr);
15950         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
15951                         wdev->conn_owner_nlportid);
15952         return 0;
15953
15954  nla_put_failure:
15955         nlmsg_free(msg);
15956         return -ENOBUFS;
15957 }
15958 EXPORT_SYMBOL(cfg80211_external_auth_request);
15959
15960 /* initialisation/exit functions */
15961
15962 int __init nl80211_init(void)
15963 {
15964         int err;
15965
15966         err = genl_register_family(&nl80211_fam);
15967         if (err)
15968                 return err;
15969
15970         err = netlink_register_notifier(&nl80211_netlink_notifier);
15971         if (err)
15972                 goto err_out;
15973
15974         return 0;
15975  err_out:
15976         genl_unregister_family(&nl80211_fam);
15977         return err;
15978 }
15979
15980 void nl80211_exit(void)
15981 {
15982         netlink_unregister_notifier(&nl80211_netlink_notifier);
15983         genl_unregister_family(&nl80211_fam);
15984 }