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 2015-2016  Intel Deutschland GmbH
   7  */
   8
   9 #include <linux/if.h>
  10 #include <linux/module.h>
  11 #include <linux/err.h>
  12 #include <linux/slab.h>
  13 #include <linux/list.h>
  14 #include <linux/if_ether.h>
  15 #include <linux/ieee80211.h>
  16 #include <linux/nl80211.h>
  17 #include <linux/rtnetlink.h>
  18 #include <linux/netlink.h>
  19 #include <linux/etherdevice.h>
  20 #include <net/net_namespace.h>
  21 #include <net/genetlink.h>
  22 #include <net/cfg80211.h>
  23 #include <net/sock.h>
  24 #include <net/inet_connection_sock.h>
  25 #include "core.h"
  26 #include "nl80211.h"
  27 #include "reg.h"
  28 #include "rdev-ops.h"
  29
  30 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  31                                    struct genl_info *info,
  32                                    struct cfg80211_crypto_settings *settings,
  33                                    int cipher_limit);
  34
  35 /* the netlink family */
  36 static struct genl_family nl80211_fam;
  37
  38 /* multicast groups */
  39 enum nl80211_multicast_groups {
  40         NL80211_MCGRP_CONFIG,
  41         NL80211_MCGRP_SCAN,
  42         NL80211_MCGRP_REGULATORY,
  43         NL80211_MCGRP_MLME,
  44         NL80211_MCGRP_VENDOR,
  45         NL80211_MCGRP_NAN,
  46         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  47 };
  48
  49 static const struct genl_multicast_group nl80211_mcgrps[] = {
  50         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  51         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  52         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  53         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  54         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  55         [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
  56 #ifdef CONFIG_NL80211_TESTMODE
  57         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  58 #endif
  59 };
  60
  61 /* returns ERR_PTR values */
  62 static struct wireless_dev *
  63 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  64 {
  65         struct cfg80211_registered_device *rdev;
  66         struct wireless_dev *result = NULL;
  67         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  68         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  69         u64 wdev_id;
  70         int wiphy_idx = -1;
  71         int ifidx = -1;
  72
  73         ASSERT_RTNL();
  74
  75         if (!have_ifidx && !have_wdev_id)
  76                 return ERR_PTR(-EINVAL);
  77
  78         if (have_ifidx)
  79                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  80         if (have_wdev_id) {
  81                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  82                 wiphy_idx = wdev_id >> 32;
  83         }
  84
  85         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  86                 struct wireless_dev *wdev;
  87
  88                 if (wiphy_net(&rdev->wiphy) != netns)
  89                         continue;
  90
  91                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  92                         continue;
  93
  94                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  95                         if (have_ifidx && wdev->netdev &&
  96                             wdev->netdev->ifindex == ifidx) {
  97                                 result = wdev;
  98                                 break;
  99                         }
 100                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 101                                 result = wdev;
 102                                 break;
 103                         }
 104                 }
 105
 106                 if (result)
 107                         break;
 108         }
 109
 110         if (result)
 111                 return result;
 112         return ERR_PTR(-ENODEV);
 113 }
 114
 115 static struct cfg80211_registered_device *
 116 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 117 {
 118         struct cfg80211_registered_device *rdev = NULL, *tmp;
 119         struct net_device *netdev;
 120
 121         ASSERT_RTNL();
 122
 123         if (!attrs[NL80211_ATTR_WIPHY] &&
 124             !attrs[NL80211_ATTR_IFINDEX] &&
 125             !attrs[NL80211_ATTR_WDEV])
 126                 return ERR_PTR(-EINVAL);
 127
 128         if (attrs[NL80211_ATTR_WIPHY])
 129                 rdev = cfg80211_rdev_by_wiphy_idx(
 130                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 131
 132         if (attrs[NL80211_ATTR_WDEV]) {
 133                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 134                 struct wireless_dev *wdev;
 135                 bool found = false;
 136
 137                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 138                 if (tmp) {
 139                         /* make sure wdev exists */
 140                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 141                                 if (wdev->identifier != (u32)wdev_id)
 142                                         continue;
 143                                 found = true;
 144                                 break;
 145                         }
 146
 147                         if (!found)
 148                                 tmp = NULL;
 149
 150                         if (rdev && tmp != rdev)
 151                                 return ERR_PTR(-EINVAL);
 152                         rdev = tmp;
 153                 }
 154         }
 155
 156         if (attrs[NL80211_ATTR_IFINDEX]) {
 157                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 158
 159                 netdev = __dev_get_by_index(netns, ifindex);
 160                 if (netdev) {
 161                         if (netdev->ieee80211_ptr)
 162                                 tmp = wiphy_to_rdev(
 163                                         netdev->ieee80211_ptr->wiphy);
 164                         else
 165                                 tmp = NULL;
 166
 167                         /* not wireless device -- return error */
 168                         if (!tmp)
 169                                 return ERR_PTR(-EINVAL);
 170
 171                         /* mismatch -- return error */
 172                         if (rdev && tmp != rdev)
 173                                 return ERR_PTR(-EINVAL);
 174
 175                         rdev = tmp;
 176                 }
 177         }
 178
 179         if (!rdev)
 180                 return ERR_PTR(-ENODEV);
 181
 182         if (netns != wiphy_net(&rdev->wiphy))
 183                 return ERR_PTR(-ENODEV);
 184
 185         return rdev;
 186 }
 187
 188 /*
 189  * This function returns a pointer to the driver
 190  * that the genl_info item that is passed refers to.
 191  *
 192  * The result of this can be a PTR_ERR and hence must
 193  * be checked with IS_ERR() for errors.
 194  */
 195 static struct cfg80211_registered_device *
 196 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 197 {
 198         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 199 }
 200
 201 /* policy for the attributes */
 202 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 203         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 204         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 205                                       .len = 20-1 },
 206         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 207
 208         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 209         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 210         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 211         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 212         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 213
 214         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 215         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 216         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 217         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 218         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 219         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 220
 221         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 222         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 223         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 224
 225         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 226         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 227
 228         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 229         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 230                                     .len = WLAN_MAX_KEY_LEN },
 231         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 232         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 233         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 234         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 235         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 236
 237         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 238         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 239         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 240                                        .len = IEEE80211_MAX_DATA_LEN },
 241         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 242                                        .len = IEEE80211_MAX_DATA_LEN },
 243         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 244         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 245         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 246         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 247                                                .len = NL80211_MAX_SUPP_RATES },
 248         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 249         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 250         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 251         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 252                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 253         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 254
 255         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 256         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 257
 258         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 259         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 260         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 261         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 262                                            .len = NL80211_MAX_SUPP_RATES },
 263         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 264
 265         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 266         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 267
 268         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 269
 270         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 271         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 272                               .len = IEEE80211_MAX_DATA_LEN },
 273         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 274         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 275
 276         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 277                                 .len = IEEE80211_MAX_SSID_LEN },
 278         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 279         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 280         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 281         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 282         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 283         [NL80211_ATTR_STA_FLAGS2] = {
 284                 .len = sizeof(struct nl80211_sta_flag_update),
 285         },
 286         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 287         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 288         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 289         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 290         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 291         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 292         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 293         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 294         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 295                                  .len = WLAN_PMKID_LEN },
 296         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 297         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 298         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 299         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 300                                  .len = IEEE80211_MAX_DATA_LEN },
 301         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 302         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 303         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 304         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 305         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 306         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 307         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 308         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 309         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 310         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 311         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 312         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 313         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 314         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 315         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 316         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 317         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 318         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 319         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 320         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 321                                          .len = IEEE80211_MAX_DATA_LEN },
 322         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 323                                          .len = IEEE80211_MAX_DATA_LEN },
 324         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 325         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 326         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 327         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 328         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 329         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 330         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 331         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 332         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 333         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 334         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 335                                       .len = IEEE80211_MAX_DATA_LEN },
 336         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 337         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 338         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 339                 .len = NL80211_HT_CAPABILITY_LEN
 340         },
 341         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 342         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 343         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 344         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 345         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 346         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 347         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 348         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 349         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 350         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 351         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 352         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 353         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 354         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 355         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 356         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 357         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 358                 .len = NL80211_VHT_CAPABILITY_LEN,
 359         },
 360         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 361         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 362                                   .len = IEEE80211_MAX_DATA_LEN },
 363         [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
 364         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 365         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 366         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 367         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 368         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 369         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 370         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 371         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 372         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 373         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 374         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 375         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 376         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 377                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 378         [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
 379         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 380         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 381         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 382         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 383         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 384         [NL80211_ATTR_TSID] = { .type = NLA_U8 },
 385         [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
 386         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 387         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 388         [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
 389         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 390         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 391         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 392         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 393         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 394         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 395         [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 },
 396         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 397                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 398         },
 399         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
 400         [NL80211_ATTR_NAN_MASTER_PREF] = { .type = NLA_U8 },
 401         [NL80211_ATTR_NAN_DUAL] = { .type = NLA_U8 },
 402         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 403         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 404                                     .len = FILS_MAX_KEK_LEN },
 405         [NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN },
 406         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 407         [NL80211_ATTR_BSSID] = { .len = ETH_ALEN },
 408 };
 409
 410 /* policy for the key attributes */
 411 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 412         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 413         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 414         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 415         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 416         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 417         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 418         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 419         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 420 };
 421
 422 /* policy for the key default flags */
 423 static const struct nla_policy
 424 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 425         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 426         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 427 };
 428
 429 #ifdef CONFIG_PM
 430 /* policy for WoWLAN attributes */
 431 static const struct nla_policy
 432 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 433         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 434         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 435         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 436         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 437         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 438         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 439         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 440         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 441         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 442         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 443 };
 444
 445 static const struct nla_policy
 446 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 447         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 448         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 449         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 450         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 451         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 452         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 453         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 454                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 455         },
 456         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 457                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 458         },
 459         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 460         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 461         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 462 };
 463 #endif /* CONFIG_PM */
 464
 465 /* policy for coalesce rule attributes */
 466 static const struct nla_policy
 467 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 468         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 469         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 470         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 471 };
 472
 473 /* policy for GTK rekey offload attributes */
 474 static const struct nla_policy
 475 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 476         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 477         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 478         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 479 };
 480
 481 static const struct nla_policy
 482 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 483         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 484                                                  .len = IEEE80211_MAX_SSID_LEN },
 485         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 486 };
 487
 488 static const struct nla_policy
 489 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 490         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 491         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 492 };
 493
 494 static const struct nla_policy
 495 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 496         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 497         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 498         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 499                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 500         },
 501 };
 502
 503 /* policy for NAN function attributes */
 504 static const struct nla_policy
 505 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 506         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 507         [NL80211_NAN_FUNC_SERVICE_ID] = { .type = NLA_BINARY,
 508                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 509         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 510         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 511         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 512         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 513         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 514         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN },
 515         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 516         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 517         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 518                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 519         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 520         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 521         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 522         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 523         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 524 };
 525
 526 /* policy for Service Response Filter attributes */
 527 static const struct nla_policy
 528 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 529         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 530         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 531                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 532         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 533         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 534 };
 535
 536 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 537                                      struct netlink_callback *cb,
 538                                      struct cfg80211_registered_device **rdev,
 539                                      struct wireless_dev **wdev)
 540 {
 541         int err;
 542
 543         rtnl_lock();
 544
 545         if (!cb->args[0]) {
 546                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 547                                   genl_family_attrbuf(&nl80211_fam),
 548                                   nl80211_fam.maxattr, nl80211_policy);
 549                 if (err)
 550                         goto out_unlock;
 551
 552                 *wdev = __cfg80211_wdev_from_attrs(
 553                                         sock_net(skb->sk),
 554                                         genl_family_attrbuf(&nl80211_fam));
 555                 if (IS_ERR(*wdev)) {
 556                         err = PTR_ERR(*wdev);
 557                         goto out_unlock;
 558                 }
 559                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 560                 /* 0 is the first index - add 1 to parse only once */
 561                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 562                 cb->args[1] = (*wdev)->identifier;
 563         } else {
 564                 /* subtract the 1 again here */
 565                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 566                 struct wireless_dev *tmp;
 567
 568                 if (!wiphy) {
 569                         err = -ENODEV;
 570                         goto out_unlock;
 571                 }
 572                 *rdev = wiphy_to_rdev(wiphy);
 573                 *wdev = NULL;
 574
 575                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 576                         if (tmp->identifier == cb->args[1]) {
 577                                 *wdev = tmp;
 578                                 break;
 579                         }
 580                 }
 581
 582                 if (!*wdev) {
 583                         err = -ENODEV;
 584                         goto out_unlock;
 585                 }
 586         }
 587
 588         return 0;
 589  out_unlock:
 590         rtnl_unlock();
 591         return err;
 592 }
 593
 594 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 595 {
 596         rtnl_unlock();
 597 }
 598
 599 /* IE validation */
 600 static bool is_valid_ie_attr(const struct nlattr *attr)
 601 {
 602         const u8 *pos;
 603         int len;
 604
 605         if (!attr)
 606                 return true;
 607
 608         pos = nla_data(attr);
 609         len = nla_len(attr);
 610
 611         while (len) {
 612                 u8 elemlen;
 613
 614                 if (len < 2)
 615                         return false;
 616                 len -= 2;
 617
 618                 elemlen = pos[1];
 619                 if (elemlen > len)
 620                         return false;
 621
 622                 len -= elemlen;
 623                 pos += 2 + elemlen;
 624         }
 625
 626         return true;
 627 }
 628
 629 /* message building helper */
 630 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 631                                    int flags, u8 cmd)
 632 {
 633         /* since there is no private header just add the generic one */
 634         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 635 }
 636
 637 static int nl80211_msg_put_channel(struct sk_buff *msg,
 638                                    struct ieee80211_channel *chan,
 639                                    bool large)
 640 {
 641         /* Some channels must be completely excluded from the
 642          * list to protect old user-space tools from breaking
 643          */
 644         if (!large && chan->flags &
 645             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 646                 return 0;
 647
 648         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 649                         chan->center_freq))
 650                 goto nla_put_failure;
 651
 652         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 653             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 654                 goto nla_put_failure;
 655         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 656                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 657                         goto nla_put_failure;
 658                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 659                         goto nla_put_failure;
 660         }
 661         if (chan->flags & IEEE80211_CHAN_RADAR) {
 662                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 663                         goto nla_put_failure;
 664                 if (large) {
 665                         u32 time;
 666
 667                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 668
 669                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 670                                         chan->dfs_state))
 671                                 goto nla_put_failure;
 672                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 673                                         time))
 674                                 goto nla_put_failure;
 675                         if (nla_put_u32(msg,
 676                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 677                                         chan->dfs_cac_ms))
 678                                 goto nla_put_failure;
 679                 }
 680         }
 681
 682         if (large) {
 683                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 684                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 685                         goto nla_put_failure;
 686                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 687                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 688                         goto nla_put_failure;
 689                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 690                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 691                         goto nla_put_failure;
 692                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 693                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 694                         goto nla_put_failure;
 695                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 696                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 697                         goto nla_put_failure;
 698                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 699                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 700                         goto nla_put_failure;
 701                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 702                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 703                         goto nla_put_failure;
 704                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 705                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 706                         goto nla_put_failure;
 707         }
 708
 709         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 710                         DBM_TO_MBM(chan->max_power)))
 711                 goto nla_put_failure;
 712
 713         return 0;
 714
 715  nla_put_failure:
 716         return -ENOBUFS;
 717 }
 718
 719 /* netlink command implementations */
 720
 721 struct key_parse {
 722         struct key_params p;
 723         int idx;
 724         int type;
 725         bool def, defmgmt;
 726         bool def_uni, def_multi;
 727 };
 728
 729 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 730 {
 731         struct nlattr *tb[NL80211_KEY_MAX + 1];
 732         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 733                                    nl80211_key_policy);
 734         if (err)
 735                 return err;
 736
 737         k->def = !!tb[NL80211_KEY_DEFAULT];
 738         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 739
 740         if (k->def) {
 741                 k->def_uni = true;
 742                 k->def_multi = true;
 743         }
 744         if (k->defmgmt)
 745                 k->def_multi = true;
 746
 747         if (tb[NL80211_KEY_IDX])
 748                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 749
 750         if (tb[NL80211_KEY_DATA]) {
 751                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 752                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 753         }
 754
 755         if (tb[NL80211_KEY_SEQ]) {
 756                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 757                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 758         }
 759
 760         if (tb[NL80211_KEY_CIPHER])
 761                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 762
 763         if (tb[NL80211_KEY_TYPE]) {
 764                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 765                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 766                         return -EINVAL;
 767         }
 768
 769         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 770                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 771
 772                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 773                                        tb[NL80211_KEY_DEFAULT_TYPES],
 774                                        nl80211_key_default_policy);
 775                 if (err)
 776                         return err;
 777
 778                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 779                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 780         }
 781
 782         return 0;
 783 }
 784
 785 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 786 {
 787         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 788                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 789                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 790         }
 791
 792         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 793                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 794                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 795         }
 796
 797         if (info->attrs[NL80211_ATTR_KEY_IDX])
 798                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 799
 800         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 801                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 802
 803         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 804         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 805
 806         if (k->def) {
 807                 k->def_uni = true;
 808                 k->def_multi = true;
 809         }
 810         if (k->defmgmt)
 811                 k->def_multi = true;
 812
 813         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 814                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 815                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 816                         return -EINVAL;
 817         }
 818
 819         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 820                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 821                 int err = nla_parse_nested(
 822                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 823                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 824                                 nl80211_key_default_policy);
 825                 if (err)
 826                         return err;
 827
 828                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 829                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 830         }
 831
 832         return 0;
 833 }
 834
 835 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 836 {
 837         int err;
 838
 839         memset(k, 0, sizeof(*k));
 840         k->idx = -1;
 841         k->type = -1;
 842
 843         if (info->attrs[NL80211_ATTR_KEY])
 844                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 845         else
 846                 err = nl80211_parse_key_old(info, k);
 847
 848         if (err)
 849                 return err;
 850
 851         if (k->def && k->defmgmt)
 852                 return -EINVAL;
 853
 854         if (k->defmgmt) {
 855                 if (k->def_uni || !k->def_multi)
 856                         return -EINVAL;
 857         }
 858
 859         if (k->idx != -1) {
 860                 if (k->defmgmt) {
 861                         if (k->idx < 4 || k->idx > 5)
 862                                 return -EINVAL;
 863                 } else if (k->def) {
 864                         if (k->idx < 0 || k->idx > 3)
 865                                 return -EINVAL;
 866                 } else {
 867                         if (k->idx < 0 || k->idx > 5)
 868                                 return -EINVAL;
 869                 }
 870         }
 871
 872         return 0;
 873 }
 874
 875 static struct cfg80211_cached_keys *
 876 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 877                        struct nlattr *keys, bool *no_ht)
 878 {
 879         struct key_parse parse;
 880         struct nlattr *key;
 881         struct cfg80211_cached_keys *result;
 882         int rem, err, def = 0;
 883         bool have_key = false;
 884
 885         nla_for_each_nested(key, keys, rem) {
 886                 have_key = true;
 887                 break;
 888         }
 889
 890         if (!have_key)
 891                 return NULL;
 892
 893         result = kzalloc(sizeof(*result), GFP_KERNEL);
 894         if (!result)
 895                 return ERR_PTR(-ENOMEM);
 896
 897         result->def = -1;
 898
 899         nla_for_each_nested(key, keys, rem) {
 900                 memset(&parse, 0, sizeof(parse));
 901                 parse.idx = -1;
 902
 903                 err = nl80211_parse_key_new(key, &parse);
 904                 if (err)
 905                         goto error;
 906                 err = -EINVAL;
 907                 if (!parse.p.key)
 908                         goto error;
 909                 if (parse.idx < 0 || parse.idx > 3)
 910                         goto error;
 911                 if (parse.def) {
 912                         if (def)
 913                                 goto error;
 914                         def = 1;
 915                         result->def = parse.idx;
 916                         if (!parse.def_uni || !parse.def_multi)
 917                                 goto error;
 918                 } else if (parse.defmgmt)
 919                         goto error;
 920                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 921                                                      parse.idx, false, NULL);
 922                 if (err)
 923                         goto error;
 924                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
 925                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
 926                         err = -EINVAL;
 927                         goto error;
 928                 }
 929                 result->params[parse.idx].cipher = parse.p.cipher;
 930                 result->params[parse.idx].key_len = parse.p.key_len;
 931                 result->params[parse.idx].key = result->data[parse.idx];
 932                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 933
 934                 /* must be WEP key if we got here */
 935                 if (no_ht)
 936                         *no_ht = true;
 937         }
 938
 939         if (result->def < 0) {
 940                 err = -EINVAL;
 941                 goto error;
 942         }
 943
 944         return result;
 945  error:
 946         kfree(result);
 947         return ERR_PTR(err);
 948 }
 949
 950 static int nl80211_key_allowed(struct wireless_dev *wdev)
 951 {
 952         ASSERT_WDEV_LOCK(wdev);
 953
 954         switch (wdev->iftype) {
 955         case NL80211_IFTYPE_AP:
 956         case NL80211_IFTYPE_AP_VLAN:
 957         case NL80211_IFTYPE_P2P_GO:
 958         case NL80211_IFTYPE_MESH_POINT:
 959                 break;
 960         case NL80211_IFTYPE_ADHOC:
 961         case NL80211_IFTYPE_STATION:
 962         case NL80211_IFTYPE_P2P_CLIENT:
 963                 if (!wdev->current_bss)
 964                         return -ENOLINK;
 965                 break;
 966         case NL80211_IFTYPE_UNSPECIFIED:
 967         case NL80211_IFTYPE_OCB:
 968         case NL80211_IFTYPE_MONITOR:
 969         case NL80211_IFTYPE_NAN:
 970         case NL80211_IFTYPE_P2P_DEVICE:
 971         case NL80211_IFTYPE_WDS:
 972         case NUM_NL80211_IFTYPES:
 973                 return -EINVAL;
 974         }
 975
 976         return 0;
 977 }
 978
 979 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
 980                                                         struct nlattr *tb)
 981 {
 982         struct ieee80211_channel *chan;
 983
 984         if (tb == NULL)
 985                 return NULL;
 986         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
 987         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
 988                 return NULL;
 989         return chan;
 990 }
 991
 992 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 993 {
 994         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 995         int i;
 996
 997         if (!nl_modes)
 998                 goto nla_put_failure;
 999
1000         i = 0;
1001         while (ifmodes) {
1002                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1003                         goto nla_put_failure;
1004                 ifmodes >>= 1;
1005                 i++;
1006         }
1007
1008         nla_nest_end(msg, nl_modes);
1009         return 0;
1010
1011 nla_put_failure:
1012         return -ENOBUFS;
1013 }
1014
1015 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1016                                           struct sk_buff *msg,
1017                                           bool large)
1018 {
1019         struct nlattr *nl_combis;
1020         int i, j;
1021
1022         nl_combis = nla_nest_start(msg,
1023                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
1024         if (!nl_combis)
1025                 goto nla_put_failure;
1026
1027         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1028                 const struct ieee80211_iface_combination *c;
1029                 struct nlattr *nl_combi, *nl_limits;
1030
1031                 c = &wiphy->iface_combinations[i];
1032
1033                 nl_combi = nla_nest_start(msg, i + 1);
1034                 if (!nl_combi)
1035                         goto nla_put_failure;
1036
1037                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1038                 if (!nl_limits)
1039                         goto nla_put_failure;
1040
1041                 for (j = 0; j < c->n_limits; j++) {
1042                         struct nlattr *nl_limit;
1043
1044                         nl_limit = nla_nest_start(msg, j + 1);
1045                         if (!nl_limit)
1046                                 goto nla_put_failure;
1047                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1048                                         c->limits[j].max))
1049                                 goto nla_put_failure;
1050                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1051                                                 c->limits[j].types))
1052                                 goto nla_put_failure;
1053                         nla_nest_end(msg, nl_limit);
1054                 }
1055
1056                 nla_nest_end(msg, nl_limits);
1057
1058                 if (c->beacon_int_infra_match &&
1059                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1060                         goto nla_put_failure;
1061                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1062                                 c->num_different_channels) ||
1063                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1064                                 c->max_interfaces))
1065                         goto nla_put_failure;
1066                 if (large &&
1067                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1068                                 c->radar_detect_widths) ||
1069                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1070                                 c->radar_detect_regions)))
1071                         goto nla_put_failure;
1072                 if (c->beacon_int_min_gcd &&
1073                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1074                                 c->beacon_int_min_gcd))
1075                         goto nla_put_failure;
1076
1077                 nla_nest_end(msg, nl_combi);
1078         }
1079
1080         nla_nest_end(msg, nl_combis);
1081
1082         return 0;
1083 nla_put_failure:
1084         return -ENOBUFS;
1085 }
1086
1087 #ifdef CONFIG_PM
1088 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1089                                         struct sk_buff *msg)
1090 {
1091         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1092         struct nlattr *nl_tcp;
1093
1094         if (!tcp)
1095                 return 0;
1096
1097         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1098         if (!nl_tcp)
1099                 return -ENOBUFS;
1100
1101         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1102                         tcp->data_payload_max))
1103                 return -ENOBUFS;
1104
1105         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1106                         tcp->data_payload_max))
1107                 return -ENOBUFS;
1108
1109         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1110                 return -ENOBUFS;
1111
1112         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1113                                 sizeof(*tcp->tok), tcp->tok))
1114                 return -ENOBUFS;
1115
1116         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1117                         tcp->data_interval_max))
1118                 return -ENOBUFS;
1119
1120         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1121                         tcp->wake_payload_max))
1122                 return -ENOBUFS;
1123
1124         nla_nest_end(msg, nl_tcp);
1125         return 0;
1126 }
1127
1128 static int nl80211_send_wowlan(struct sk_buff *msg,
1129                                struct cfg80211_registered_device *rdev,
1130                                bool large)
1131 {
1132         struct nlattr *nl_wowlan;
1133
1134         if (!rdev->wiphy.wowlan)
1135                 return 0;
1136
1137         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1138         if (!nl_wowlan)
1139                 return -ENOBUFS;
1140
1141         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1142              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1143             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1144              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1145             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1146              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1147             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1148              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1149             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1150              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1151             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1152              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1153             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1154              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1155             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1156              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1157                 return -ENOBUFS;
1158
1159         if (rdev->wiphy.wowlan->n_patterns) {
1160                 struct nl80211_pattern_support pat = {
1161                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1162                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1163                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1164                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1165                 };
1166
1167                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1168                             sizeof(pat), &pat))
1169                         return -ENOBUFS;
1170         }
1171
1172         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1173             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1174                         rdev->wiphy.wowlan->max_nd_match_sets))
1175                 return -ENOBUFS;
1176
1177         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1178                 return -ENOBUFS;
1179
1180         nla_nest_end(msg, nl_wowlan);
1181
1182         return 0;
1183 }
1184 #endif
1185
1186 static int nl80211_send_coalesce(struct sk_buff *msg,
1187                                  struct cfg80211_registered_device *rdev)
1188 {
1189         struct nl80211_coalesce_rule_support rule;
1190
1191         if (!rdev->wiphy.coalesce)
1192                 return 0;
1193
1194         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1195         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1196         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1197         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1198         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1199         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1200
1201         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1202                 return -ENOBUFS;
1203
1204         return 0;
1205 }
1206
1207 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1208                                       struct ieee80211_supported_band *sband)
1209 {
1210         struct nlattr *nl_rates, *nl_rate;
1211         struct ieee80211_rate *rate;
1212         int i;
1213
1214         /* add HT info */
1215         if (sband->ht_cap.ht_supported &&
1216             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1217                      sizeof(sband->ht_cap.mcs),
1218                      &sband->ht_cap.mcs) ||
1219              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1220                          sband->ht_cap.cap) ||
1221              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1222                         sband->ht_cap.ampdu_factor) ||
1223              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1224                         sband->ht_cap.ampdu_density)))
1225                 return -ENOBUFS;
1226
1227         /* add VHT info */
1228         if (sband->vht_cap.vht_supported &&
1229             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1230                      sizeof(sband->vht_cap.vht_mcs),
1231                      &sband->vht_cap.vht_mcs) ||
1232              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1233                          sband->vht_cap.cap)))
1234                 return -ENOBUFS;
1235
1236         /* add bitrates */
1237         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1238         if (!nl_rates)
1239                 return -ENOBUFS;
1240
1241         for (i = 0; i < sband->n_bitrates; i++) {
1242                 nl_rate = nla_nest_start(msg, i);
1243                 if (!nl_rate)
1244                         return -ENOBUFS;
1245
1246                 rate = &sband->bitrates[i];
1247                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1248                                 rate->bitrate))
1249                         return -ENOBUFS;
1250                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1251                     nla_put_flag(msg,
1252                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1253                         return -ENOBUFS;
1254
1255                 nla_nest_end(msg, nl_rate);
1256         }
1257
1258         nla_nest_end(msg, nl_rates);
1259
1260         return 0;
1261 }
1262
1263 static int
1264 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1265                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1266 {
1267         u16 stypes;
1268         struct nlattr *nl_ftypes, *nl_ifs;
1269         enum nl80211_iftype ift;
1270         int i;
1271
1272         if (!mgmt_stypes)
1273                 return 0;
1274
1275         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1276         if (!nl_ifs)
1277                 return -ENOBUFS;
1278
1279         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1280                 nl_ftypes = nla_nest_start(msg, ift);
1281                 if (!nl_ftypes)
1282                         return -ENOBUFS;
1283                 i = 0;
1284                 stypes = mgmt_stypes[ift].tx;
1285                 while (stypes) {
1286                         if ((stypes & 1) &&
1287                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1288                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1289                                 return -ENOBUFS;
1290                         stypes >>= 1;
1291                         i++;
1292                 }
1293                 nla_nest_end(msg, nl_ftypes);
1294         }
1295
1296         nla_nest_end(msg, nl_ifs);
1297
1298         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1299         if (!nl_ifs)
1300                 return -ENOBUFS;
1301
1302         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1303                 nl_ftypes = nla_nest_start(msg, ift);
1304                 if (!nl_ftypes)
1305                         return -ENOBUFS;
1306                 i = 0;
1307                 stypes = mgmt_stypes[ift].rx;
1308                 while (stypes) {
1309                         if ((stypes & 1) &&
1310                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1311                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1312                                 return -ENOBUFS;
1313                         stypes >>= 1;
1314                         i++;
1315                 }
1316                 nla_nest_end(msg, nl_ftypes);
1317         }
1318         nla_nest_end(msg, nl_ifs);
1319
1320         return 0;
1321 }
1322
1323 #define CMD(op, n)                                                      \
1324          do {                                                           \
1325                 if (rdev->ops->op) {                                    \
1326                         i++;                                            \
1327                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1328                                 goto nla_put_failure;                   \
1329                 }                                                       \
1330         } while (0)
1331
1332 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1333                                         struct sk_buff *msg)
1334 {
1335         int i = 0;
1336
1337         /*
1338          * do *NOT* add anything into this function, new things need to be
1339          * advertised only to new versions of userspace that can deal with
1340          * the split (and they can't possibly care about new features...
1341          */
1342         CMD(add_virtual_intf, NEW_INTERFACE);
1343         CMD(change_virtual_intf, SET_INTERFACE);
1344         CMD(add_key, NEW_KEY);
1345         CMD(start_ap, START_AP);
1346         CMD(add_station, NEW_STATION);
1347         CMD(add_mpath, NEW_MPATH);
1348         CMD(update_mesh_config, SET_MESH_CONFIG);
1349         CMD(change_bss, SET_BSS);
1350         CMD(auth, AUTHENTICATE);
1351         CMD(assoc, ASSOCIATE);
1352         CMD(deauth, DEAUTHENTICATE);
1353         CMD(disassoc, DISASSOCIATE);
1354         CMD(join_ibss, JOIN_IBSS);
1355         CMD(join_mesh, JOIN_MESH);
1356         CMD(set_pmksa, SET_PMKSA);
1357         CMD(del_pmksa, DEL_PMKSA);
1358         CMD(flush_pmksa, FLUSH_PMKSA);
1359         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1360                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1361         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1362         CMD(mgmt_tx, FRAME);
1363         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1364         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1365                 i++;
1366                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1367                         goto nla_put_failure;
1368         }
1369         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1370             rdev->ops->join_mesh) {
1371                 i++;
1372                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1373                         goto nla_put_failure;
1374         }
1375         CMD(set_wds_peer, SET_WDS_PEER);
1376         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1377                 CMD(tdls_mgmt, TDLS_MGMT);
1378                 CMD(tdls_oper, TDLS_OPER);
1379         }
1380         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1381                 CMD(sched_scan_start, START_SCHED_SCAN);
1382         CMD(probe_client, PROBE_CLIENT);
1383         CMD(set_noack_map, SET_NOACK_MAP);
1384         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1385                 i++;
1386                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1387                         goto nla_put_failure;
1388         }
1389         CMD(start_p2p_device, START_P2P_DEVICE);
1390         CMD(set_mcast_rate, SET_MCAST_RATE);
1391 #ifdef CONFIG_NL80211_TESTMODE
1392         CMD(testmode_cmd, TESTMODE);
1393 #endif
1394
1395         if (rdev->ops->connect || rdev->ops->auth) {
1396                 i++;
1397                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1398                         goto nla_put_failure;
1399         }
1400
1401         if (rdev->ops->disconnect || rdev->ops->deauth) {
1402                 i++;
1403                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1404                         goto nla_put_failure;
1405         }
1406
1407         return i;
1408  nla_put_failure:
1409         return -ENOBUFS;
1410 }
1411
1412 struct nl80211_dump_wiphy_state {
1413         s64 filter_wiphy;
1414         long start;
1415         long split_start, band_start, chan_start, capa_start;
1416         bool split;
1417 };
1418
1419 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1420                               enum nl80211_commands cmd,
1421                               struct sk_buff *msg, u32 portid, u32 seq,
1422                               int flags, struct nl80211_dump_wiphy_state *state)
1423 {
1424         void *hdr;
1425         struct nlattr *nl_bands, *nl_band;
1426         struct nlattr *nl_freqs, *nl_freq;
1427         struct nlattr *nl_cmds;
1428         enum nl80211_band band;
1429         struct ieee80211_channel *chan;
1430         int i;
1431         const struct ieee80211_txrx_stypes *mgmt_stypes =
1432                                 rdev->wiphy.mgmt_stypes;
1433         u32 features;
1434
1435         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1436         if (!hdr)
1437                 return -ENOBUFS;
1438
1439         if (WARN_ON(!state))
1440                 return -EINVAL;
1441
1442         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1443             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1444                            wiphy_name(&rdev->wiphy)) ||
1445             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1446                         cfg80211_rdev_list_generation))
1447                 goto nla_put_failure;
1448
1449         if (cmd != NL80211_CMD_NEW_WIPHY)
1450                 goto finish;
1451
1452         switch (state->split_start) {
1453         case 0:
1454                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1455                                rdev->wiphy.retry_short) ||
1456                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1457                                rdev->wiphy.retry_long) ||
1458                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1459                                 rdev->wiphy.frag_threshold) ||
1460                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1461                                 rdev->wiphy.rts_threshold) ||
1462                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1463                                rdev->wiphy.coverage_class) ||
1464                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1465                                rdev->wiphy.max_scan_ssids) ||
1466                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1467                                rdev->wiphy.max_sched_scan_ssids) ||
1468                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1469                                 rdev->wiphy.max_scan_ie_len) ||
1470                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1471                                 rdev->wiphy.max_sched_scan_ie_len) ||
1472                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1473                                rdev->wiphy.max_match_sets) ||
1474                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1475                                 rdev->wiphy.max_sched_scan_plans) ||
1476                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1477                                 rdev->wiphy.max_sched_scan_plan_interval) ||
1478                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1479                                 rdev->wiphy.max_sched_scan_plan_iterations))
1480                         goto nla_put_failure;
1481
1482                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1483                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1484                         goto nla_put_failure;
1485                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1486                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1487                         goto nla_put_failure;
1488                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1489                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1490                         goto nla_put_failure;
1491                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1492                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1493                         goto nla_put_failure;
1494                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1495                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1496                         goto nla_put_failure;
1497                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1498                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1499                         goto nla_put_failure;
1500                 state->split_start++;
1501                 if (state->split)
1502                         break;
1503         case 1:
1504                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1505                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1506                             rdev->wiphy.cipher_suites))
1507                         goto nla_put_failure;
1508
1509                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1510                                rdev->wiphy.max_num_pmkids))
1511                         goto nla_put_failure;
1512
1513                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1514                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1515                         goto nla_put_failure;
1516
1517                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1518                                 rdev->wiphy.available_antennas_tx) ||
1519                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1520                                 rdev->wiphy.available_antennas_rx))
1521                         goto nla_put_failure;
1522
1523                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1524                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1525                                 rdev->wiphy.probe_resp_offload))
1526                         goto nla_put_failure;
1527
1528                 if ((rdev->wiphy.available_antennas_tx ||
1529                      rdev->wiphy.available_antennas_rx) &&
1530                     rdev->ops->get_antenna) {
1531                         u32 tx_ant = 0, rx_ant = 0;
1532                         int res;
1533
1534                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1535                         if (!res) {
1536                                 if (nla_put_u32(msg,
1537                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1538                                                 tx_ant) ||
1539                                     nla_put_u32(msg,
1540                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1541                                                 rx_ant))
1542                                         goto nla_put_failure;
1543                         }
1544                 }
1545
1546                 state->split_start++;
1547                 if (state->split)
1548                         break;
1549         case 2:
1550                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1551                                         rdev->wiphy.interface_modes))
1552                                 goto nla_put_failure;
1553                 state->split_start++;
1554                 if (state->split)
1555                         break;
1556         case 3:
1557                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1558                 if (!nl_bands)
1559                         goto nla_put_failure;
1560
1561                 for (band = state->band_start;
1562                      band < NUM_NL80211_BANDS; band++) {
1563                         struct ieee80211_supported_band *sband;
1564
1565                         sband = rdev->wiphy.bands[band];
1566
1567                         if (!sband)
1568                                 continue;
1569
1570                         nl_band = nla_nest_start(msg, band);
1571                         if (!nl_band)
1572                                 goto nla_put_failure;
1573
1574                         switch (state->chan_start) {
1575                         case 0:
1576                                 if (nl80211_send_band_rateinfo(msg, sband))
1577                                         goto nla_put_failure;
1578                                 state->chan_start++;
1579                                 if (state->split)
1580                                         break;
1581                         default:
1582                                 /* add frequencies */
1583                                 nl_freqs = nla_nest_start(
1584                                         msg, NL80211_BAND_ATTR_FREQS);
1585                                 if (!nl_freqs)
1586                                         goto nla_put_failure;
1587
1588                                 for (i = state->chan_start - 1;
1589                                      i < sband->n_channels;
1590                                      i++) {
1591                                         nl_freq = nla_nest_start(msg, i);
1592                                         if (!nl_freq)
1593                                                 goto nla_put_failure;
1594
1595                                         chan = &sband->channels[i];
1596
1597                                         if (nl80211_msg_put_channel(
1598                                                         msg, chan,
1599                                                         state->split))
1600                                                 goto nla_put_failure;
1601
1602                                         nla_nest_end(msg, nl_freq);
1603                                         if (state->split)
1604                                                 break;
1605                                 }
1606                                 if (i < sband->n_channels)
1607                                         state->chan_start = i + 2;
1608                                 else
1609                                         state->chan_start = 0;
1610                                 nla_nest_end(msg, nl_freqs);
1611                         }
1612
1613                         nla_nest_end(msg, nl_band);
1614
1615                         if (state->split) {
1616                                 /* start again here */
1617                                 if (state->chan_start)
1618                                         band--;
1619                                 break;
1620                         }
1621                 }
1622                 nla_nest_end(msg, nl_bands);
1623
1624                 if (band < NUM_NL80211_BANDS)
1625                         state->band_start = band + 1;
1626                 else
1627                         state->band_start = 0;
1628
1629                 /* if bands & channels are done, continue outside */
1630                 if (state->band_start == 0 && state->chan_start == 0)
1631                         state->split_start++;
1632                 if (state->split)
1633                         break;
1634         case 4:
1635                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1636                 if (!nl_cmds)
1637                         goto nla_put_failure;
1638
1639                 i = nl80211_add_commands_unsplit(rdev, msg);
1640                 if (i < 0)
1641                         goto nla_put_failure;
1642                 if (state->split) {
1643                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1644                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1645                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1646                                 CMD(channel_switch, CHANNEL_SWITCH);
1647                         CMD(set_qos_map, SET_QOS_MAP);
1648                         if (rdev->wiphy.features &
1649                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1650                                 CMD(add_tx_ts, ADD_TX_TS);
1651                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1652                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1653                 }
1654 #undef CMD
1655
1656                 nla_nest_end(msg, nl_cmds);
1657                 state->split_start++;
1658                 if (state->split)
1659                         break;
1660         case 5:
1661                 if (rdev->ops->remain_on_channel &&
1662                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1663                     nla_put_u32(msg,
1664                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1665                                 rdev->wiphy.max_remain_on_channel_duration))
1666                         goto nla_put_failure;
1667
1668                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1669                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1670                         goto nla_put_failure;
1671
1672                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1673                         goto nla_put_failure;
1674                 state->split_start++;
1675                 if (state->split)
1676                         break;
1677         case 6:
1678 #ifdef CONFIG_PM
1679                 if (nl80211_send_wowlan(msg, rdev, state->split))
1680                         goto nla_put_failure;
1681                 state->split_start++;
1682                 if (state->split)
1683                         break;
1684 #else
1685                 state->split_start++;
1686 #endif
1687         case 7:
1688                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1689                                         rdev->wiphy.software_iftypes))
1690                         goto nla_put_failure;
1691
1692                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1693                                                    state->split))
1694                         goto nla_put_failure;
1695
1696                 state->split_start++;
1697                 if (state->split)
1698                         break;
1699         case 8:
1700                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1701                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1702                                 rdev->wiphy.ap_sme_capa))
1703                         goto nla_put_failure;
1704
1705                 features = rdev->wiphy.features;
1706                 /*
1707                  * We can only add the per-channel limit information if the
1708                  * dump is split, otherwise it makes it too big. Therefore
1709                  * only advertise it in that case.
1710                  */
1711                 if (state->split)
1712                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1713                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1714                         goto nla_put_failure;
1715
1716                 if (rdev->wiphy.ht_capa_mod_mask &&
1717                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1718                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
1719                             rdev->wiphy.ht_capa_mod_mask))
1720                         goto nla_put_failure;
1721
1722                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1723                     rdev->wiphy.max_acl_mac_addrs &&
1724                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1725                                 rdev->wiphy.max_acl_mac_addrs))
1726                         goto nla_put_failure;
1727
1728                 /*
1729                  * Any information below this point is only available to
1730                  * applications that can deal with it being split. This
1731                  * helps ensure that newly added capabilities don't break
1732                  * older tools by overrunning their buffers.
1733                  *
1734                  * We still increment split_start so that in the split
1735                  * case we'll continue with more data in the next round,
1736                  * but break unconditionally so unsplit data stops here.
1737                  */
1738                 state->split_start++;
1739                 break;
1740         case 9:
1741                 if (rdev->wiphy.extended_capabilities &&
1742                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1743                              rdev->wiphy.extended_capabilities_len,
1744                              rdev->wiphy.extended_capabilities) ||
1745                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1746                              rdev->wiphy.extended_capabilities_len,
1747                              rdev->wiphy.extended_capabilities_mask)))
1748                         goto nla_put_failure;
1749
1750                 if (rdev->wiphy.vht_capa_mod_mask &&
1751                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1752                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
1753                             rdev->wiphy.vht_capa_mod_mask))
1754                         goto nla_put_failure;
1755
1756                 state->split_start++;
1757                 break;
1758         case 10:
1759                 if (nl80211_send_coalesce(msg, rdev))
1760                         goto nla_put_failure;
1761
1762                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1763                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1764                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1765                         goto nla_put_failure;
1766
1767                 if (rdev->wiphy.max_ap_assoc_sta &&
1768                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1769                                 rdev->wiphy.max_ap_assoc_sta))
1770                         goto nla_put_failure;
1771
1772                 state->split_start++;
1773                 break;
1774         case 11:
1775                 if (rdev->wiphy.n_vendor_commands) {
1776                         const struct nl80211_vendor_cmd_info *info;
1777                         struct nlattr *nested;
1778
1779                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1780                         if (!nested)
1781                                 goto nla_put_failure;
1782
1783                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1784                                 info = &rdev->wiphy.vendor_commands[i].info;
1785                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1786                                         goto nla_put_failure;
1787                         }
1788                         nla_nest_end(msg, nested);
1789                 }
1790
1791                 if (rdev->wiphy.n_vendor_events) {
1792                         const struct nl80211_vendor_cmd_info *info;
1793                         struct nlattr *nested;
1794
1795                         nested = nla_nest_start(msg,
1796                                                 NL80211_ATTR_VENDOR_EVENTS);
1797                         if (!nested)
1798                                 goto nla_put_failure;
1799
1800                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1801                                 info = &rdev->wiphy.vendor_events[i];
1802                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1803                                         goto nla_put_failure;
1804                         }
1805                         nla_nest_end(msg, nested);
1806                 }
1807                 state->split_start++;
1808                 break;
1809         case 12:
1810                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1811                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1812                                rdev->wiphy.max_num_csa_counters))
1813                         goto nla_put_failure;
1814
1815                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1816                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1817                         goto nla_put_failure;
1818
1819                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1820                             sizeof(rdev->wiphy.ext_features),
1821                             rdev->wiphy.ext_features))
1822                         goto nla_put_failure;
1823
1824                 if (rdev->wiphy.bss_select_support) {
1825                         struct nlattr *nested;
1826                         u32 bss_select_support = rdev->wiphy.bss_select_support;
1827
1828                         nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1829                         if (!nested)
1830                                 goto nla_put_failure;
1831
1832                         i = 0;
1833                         while (bss_select_support) {
1834                                 if ((bss_select_support & 1) &&
1835                                     nla_put_flag(msg, i))
1836                                         goto nla_put_failure;
1837                                 i++;
1838                                 bss_select_support >>= 1;
1839                         }
1840                         nla_nest_end(msg, nested);
1841                 }
1842
1843                 state->split_start++;
1844                 break;
1845         case 13:
1846                 if (rdev->wiphy.num_iftype_ext_capab &&
1847                     rdev->wiphy.iftype_ext_capab) {
1848                         struct nlattr *nested_ext_capab, *nested;
1849
1850                         nested = nla_nest_start(msg,
1851                                                 NL80211_ATTR_IFTYPE_EXT_CAPA);
1852                         if (!nested)
1853                                 goto nla_put_failure;
1854
1855                         for (i = state->capa_start;
1856                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
1857                                 const struct wiphy_iftype_ext_capab *capab;
1858
1859                                 capab = &rdev->wiphy.iftype_ext_capab[i];
1860
1861                                 nested_ext_capab = nla_nest_start(msg, i);
1862                                 if (!nested_ext_capab ||
1863                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1864                                                 capab->iftype) ||
1865                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
1866                                             capab->extended_capabilities_len,
1867                                             capab->extended_capabilities) ||
1868                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1869                                             capab->extended_capabilities_len,
1870                                             capab->extended_capabilities_mask))
1871                                         goto nla_put_failure;
1872
1873                                 nla_nest_end(msg, nested_ext_capab);
1874                                 if (state->split)
1875                                         break;
1876                         }
1877                         nla_nest_end(msg, nested);
1878                         if (i < rdev->wiphy.num_iftype_ext_capab) {
1879                                 state->capa_start = i + 1;
1880                                 break;
1881                         }
1882                 }
1883
1884                 /* done */
1885                 state->split_start = 0;
1886                 break;
1887         }
1888  finish:
1889         genlmsg_end(msg, hdr);
1890         return 0;
1891
1892  nla_put_failure:
1893         genlmsg_cancel(msg, hdr);
1894         return -EMSGSIZE;
1895 }
1896
1897 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1898                                     struct netlink_callback *cb,
1899                                     struct nl80211_dump_wiphy_state *state)
1900 {
1901         struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
1902         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1903                               tb, nl80211_fam.maxattr, nl80211_policy);
1904         /* ignore parse errors for backward compatibility */
1905         if (ret)
1906                 return 0;
1907
1908         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1909         if (tb[NL80211_ATTR_WIPHY])
1910                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1911         if (tb[NL80211_ATTR_WDEV])
1912                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1913         if (tb[NL80211_ATTR_IFINDEX]) {
1914                 struct net_device *netdev;
1915                 struct cfg80211_registered_device *rdev;
1916                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1917
1918                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1919                 if (!netdev)
1920                         return -ENODEV;
1921                 if (netdev->ieee80211_ptr) {
1922                         rdev = wiphy_to_rdev(
1923                                 netdev->ieee80211_ptr->wiphy);
1924                         state->filter_wiphy = rdev->wiphy_idx;
1925                 }
1926         }
1927
1928         return 0;
1929 }
1930
1931 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1932 {
1933         int idx = 0, ret;
1934         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1935         struct cfg80211_registered_device *rdev;
1936
1937         rtnl_lock();
1938         if (!state) {
1939                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1940                 if (!state) {
1941                         rtnl_unlock();
1942                         return -ENOMEM;
1943                 }
1944                 state->filter_wiphy = -1;
1945                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1946                 if (ret) {
1947                         kfree(state);
1948                         rtnl_unlock();
1949                         return ret;
1950                 }
1951                 cb->args[0] = (long)state;
1952         }
1953
1954         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1955                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1956                         continue;
1957                 if (++idx <= state->start)
1958                         continue;
1959                 if (state->filter_wiphy != -1 &&
1960                     state->filter_wiphy != rdev->wiphy_idx)
1961                         continue;
1962                 /* attempt to fit multiple wiphy data chunks into the skb */
1963                 do {
1964                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1965                                                  skb,
1966                                                  NETLINK_CB(cb->skb).portid,
1967                                                  cb->nlh->nlmsg_seq,
1968                                                  NLM_F_MULTI, state);
1969                         if (ret < 0) {
1970                                 /*
1971                                  * If sending the wiphy data didn't fit (ENOBUFS
1972                                  * or EMSGSIZE returned), this SKB is still
1973                                  * empty (so it's not too big because another
1974                                  * wiphy dataset is already in the skb) and
1975                                  * we've not tried to adjust the dump allocation
1976                                  * yet ... then adjust the alloc size to be
1977                                  * bigger, and return 1 but with the empty skb.
1978                                  * This results in an empty message being RX'ed
1979                                  * in userspace, but that is ignored.
1980                                  *
1981                                  * We can then retry with the larger buffer.
1982                                  */
1983                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1984                                     !skb->len && !state->split &&
1985                                     cb->min_dump_alloc < 4096) {
1986                                         cb->min_dump_alloc = 4096;
1987                                         state->split_start = 0;
1988                                         rtnl_unlock();
1989                                         return 1;
1990                                 }
1991                                 idx--;
1992                                 break;
1993                         }
1994                 } while (state->split_start > 0);
1995                 break;
1996         }
1997         rtnl_unlock();
1998
1999         state->start = idx;
2000
2001         return skb->len;
2002 }
2003
2004 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2005 {
2006         kfree((void *)cb->args[0]);
2007         return 0;
2008 }
2009
2010 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2011 {
2012         struct sk_buff *msg;
2013         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2014         struct nl80211_dump_wiphy_state state = {};
2015
2016         msg = nlmsg_new(4096, GFP_KERNEL);
2017         if (!msg)
2018                 return -ENOMEM;
2019
2020         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2021                                info->snd_portid, info->snd_seq, 0,
2022                                &state) < 0) {
2023                 nlmsg_free(msg);
2024                 return -ENOBUFS;
2025         }
2026
2027         return genlmsg_reply(msg, info);
2028 }
2029
2030 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2031         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2032         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2033         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2034         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2035         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2036 };
2037
2038 static int parse_txq_params(struct nlattr *tb[],
2039                             struct ieee80211_txq_params *txq_params)
2040 {
2041         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2042             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2043             !tb[NL80211_TXQ_ATTR_AIFS])
2044                 return -EINVAL;
2045
2046         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2047         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2048         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2049         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2050         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2051
2052         if (txq_params->ac >= NL80211_NUM_ACS)
2053                 return -EINVAL;
2054
2055         return 0;
2056 }
2057
2058 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2059 {
2060         /*
2061          * You can only set the channel explicitly for WDS interfaces,
2062          * all others have their channel managed via their respective
2063          * "establish a connection" command (connect, join, ...)
2064          *
2065          * For AP/GO and mesh mode, the channel can be set with the
2066          * channel userspace API, but is only stored and passed to the
2067          * low-level driver when the AP starts or the mesh is joined.
2068          * This is for backward compatibility, userspace can also give
2069          * the channel in the start-ap or join-mesh commands instead.
2070          *
2071          * Monitors are special as they are normally slaved to
2072          * whatever else is going on, so they have their own special
2073          * operation to set the monitor channel if possible.
2074          */
2075         return !wdev ||
2076                 wdev->iftype == NL80211_IFTYPE_AP ||
2077                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2078                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2079                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2080 }
2081
2082 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2083                                  struct genl_info *info,
2084                                  struct cfg80211_chan_def *chandef)
2085 {
2086         u32 control_freq;
2087
2088         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2089                 return -EINVAL;
2090
2091         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2092
2093         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2094         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2095         chandef->center_freq1 = control_freq;
2096         chandef->center_freq2 = 0;
2097
2098         /* Primary channel not allowed */
2099         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2100                 return -EINVAL;
2101
2102         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2103                 enum nl80211_channel_type chantype;
2104
2105                 chantype = nla_get_u32(
2106                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2107
2108                 switch (chantype) {
2109                 case NL80211_CHAN_NO_HT:
2110                 case NL80211_CHAN_HT20:
2111                 case NL80211_CHAN_HT40PLUS:
2112                 case NL80211_CHAN_HT40MINUS:
2113                         cfg80211_chandef_create(chandef, chandef->chan,
2114                                                 chantype);
2115                         break;
2116                 default:
2117                         return -EINVAL;
2118                 }
2119         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2120                 chandef->width =
2121                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2122                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2123                         chandef->center_freq1 =
2124                                 nla_get_u32(
2125                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2126                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2127                         chandef->center_freq2 =
2128                                 nla_get_u32(
2129                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2130         }
2131
2132         if (!cfg80211_chandef_valid(chandef))
2133                 return -EINVAL;
2134
2135         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2136                                      IEEE80211_CHAN_DISABLED))
2137                 return -EINVAL;
2138
2139         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2140              chandef->width == NL80211_CHAN_WIDTH_10) &&
2141             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2142                 return -EINVAL;
2143
2144         return 0;
2145 }
2146
2147 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2148                                  struct net_device *dev,
2149                                  struct genl_info *info)
2150 {
2151         struct cfg80211_chan_def chandef;
2152         int result;
2153         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2154         struct wireless_dev *wdev = NULL;
2155
2156         if (dev)
2157                 wdev = dev->ieee80211_ptr;
2158         if (!nl80211_can_set_dev_channel(wdev))
2159                 return -EOPNOTSUPP;
2160         if (wdev)
2161                 iftype = wdev->iftype;
2162
2163         result = nl80211_parse_chandef(rdev, info, &chandef);
2164         if (result)
2165                 return result;
2166
2167         switch (iftype) {
2168         case NL80211_IFTYPE_AP:
2169         case NL80211_IFTYPE_P2P_GO:
2170                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2171                                                    iftype)) {
2172                         result = -EINVAL;
2173                         break;
2174                 }
2175                 if (wdev->beacon_interval) {
2176                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2177                             !(rdev->wiphy.features &
2178                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2179                                 result = -EBUSY;
2180                                 break;
2181                         }
2182
2183                         /* Only allow dynamic channel width changes */
2184                         if (chandef.chan != wdev->preset_chandef.chan) {
2185                                 result = -EBUSY;
2186                                 break;
2187                         }
2188                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2189                         if (result)
2190                                 break;
2191                 }
2192                 wdev->preset_chandef = chandef;
2193                 result = 0;
2194                 break;
2195         case NL80211_IFTYPE_MESH_POINT:
2196                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2197                 break;
2198         case NL80211_IFTYPE_MONITOR:
2199                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2200                 break;
2201         default:
2202                 result = -EINVAL;
2203         }
2204
2205         return result;
2206 }
2207
2208 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2209 {
2210         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2211         struct net_device *netdev = info->user_ptr[1];
2212
2213         return __nl80211_set_channel(rdev, netdev, info);
2214 }
2215
2216 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2217 {
2218         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2219         struct net_device *dev = info->user_ptr[1];
2220         struct wireless_dev *wdev = dev->ieee80211_ptr;
2221         const u8 *bssid;
2222
2223         if (!info->attrs[NL80211_ATTR_MAC])
2224                 return -EINVAL;
2225
2226         if (netif_running(dev))
2227                 return -EBUSY;
2228
2229         if (!rdev->ops->set_wds_peer)
2230                 return -EOPNOTSUPP;
2231
2232         if (wdev->iftype != NL80211_IFTYPE_WDS)
2233                 return -EOPNOTSUPP;
2234
2235         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2236         return rdev_set_wds_peer(rdev, dev, bssid);
2237 }
2238
2239 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2240 {
2241         struct cfg80211_registered_device *rdev;
2242         struct net_device *netdev = NULL;
2243         struct wireless_dev *wdev;
2244         int result = 0, rem_txq_params = 0;
2245         struct nlattr *nl_txq_params;
2246         u32 changed;
2247         u8 retry_short = 0, retry_long = 0;
2248         u32 frag_threshold = 0, rts_threshold = 0;
2249         u8 coverage_class = 0;
2250
2251         ASSERT_RTNL();
2252
2253         /*
2254          * Try to find the wiphy and netdev. Normally this
2255          * function shouldn't need the netdev, but this is
2256          * done for backward compatibility -- previously
2257          * setting the channel was done per wiphy, but now
2258          * it is per netdev. Previous userland like hostapd
2259          * also passed a netdev to set_wiphy, so that it is
2260          * possible to let that go to the right netdev!
2261          */
2262
2263         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2264                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2265
2266                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2267                 if (netdev && netdev->ieee80211_ptr)
2268                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2269                 else
2270                         netdev = NULL;
2271         }
2272
2273         if (!netdev) {
2274                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2275                                                   info->attrs);
2276                 if (IS_ERR(rdev))
2277                         return PTR_ERR(rdev);
2278                 wdev = NULL;
2279                 netdev = NULL;
2280                 result = 0;
2281         } else
2282                 wdev = netdev->ieee80211_ptr;
2283
2284         /*
2285          * end workaround code, by now the rdev is available
2286          * and locked, and wdev may or may not be NULL.
2287          */
2288
2289         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2290                 result = cfg80211_dev_rename(
2291                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2292
2293         if (result)
2294                 return result;
2295
2296         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2297                 struct ieee80211_txq_params txq_params;
2298                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2299
2300                 if (!rdev->ops->set_txq_params)
2301                         return -EOPNOTSUPP;
2302
2303                 if (!netdev)
2304                         return -EINVAL;
2305
2306                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2307                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2308                         return -EINVAL;
2309
2310                 if (!netif_running(netdev))
2311                         return -ENETDOWN;
2312
2313                 nla_for_each_nested(nl_txq_params,
2314                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2315                                     rem_txq_params) {
2316                         result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2317                                                   nl_txq_params,
2318                                                   txq_params_policy);
2319                         if (result)
2320                                 return result;
2321                         result = parse_txq_params(tb, &txq_params);
2322                         if (result)
2323                                 return result;
2324
2325                         result = rdev_set_txq_params(rdev, netdev,
2326                                                      &txq_params);
2327                         if (result)
2328                                 return result;
2329                 }
2330         }
2331
2332         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2333                 result = __nl80211_set_channel(
2334                         rdev,
2335                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2336                         info);
2337                 if (result)
2338                         return result;
2339         }
2340
2341         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2342                 struct wireless_dev *txp_wdev = wdev;
2343                 enum nl80211_tx_power_setting type;
2344                 int idx, mbm = 0;
2345
2346                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2347                         txp_wdev = NULL;
2348
2349                 if (!rdev->ops->set_tx_power)
2350                         return -EOPNOTSUPP;
2351
2352                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2353                 type = nla_get_u32(info->attrs[idx]);
2354
2355                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2356                     (type != NL80211_TX_POWER_AUTOMATIC))
2357                         return -EINVAL;
2358
2359                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2360                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2361                         mbm = nla_get_u32(info->attrs[idx]);
2362                 }
2363
2364                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2365                 if (result)
2366                         return result;
2367         }
2368
2369         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2370             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2371                 u32 tx_ant, rx_ant;
2372
2373                 if ((!rdev->wiphy.available_antennas_tx &&
2374                      !rdev->wiphy.available_antennas_rx) ||
2375                     !rdev->ops->set_antenna)
2376                         return -EOPNOTSUPP;
2377
2378                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2379                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2380
2381                 /* reject antenna configurations which don't match the
2382                  * available antenna masks, except for the "all" mask */
2383                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2384                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2385                         return -EINVAL;
2386
2387                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2388                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2389
2390                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2391                 if (result)
2392                         return result;
2393         }
2394
2395         changed = 0;
2396
2397         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2398                 retry_short = nla_get_u8(
2399                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2400                 if (retry_short == 0)
2401                         return -EINVAL;
2402
2403                 changed |= WIPHY_PARAM_RETRY_SHORT;
2404         }
2405
2406         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2407                 retry_long = nla_get_u8(
2408                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2409                 if (retry_long == 0)
2410                         return -EINVAL;
2411
2412                 changed |= WIPHY_PARAM_RETRY_LONG;
2413         }
2414
2415         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2416                 frag_threshold = nla_get_u32(
2417                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2418                 if (frag_threshold < 256)
2419                         return -EINVAL;
2420
2421                 if (frag_threshold != (u32) -1) {
2422                         /*
2423                          * Fragments (apart from the last one) are required to
2424                          * have even length. Make the fragmentation code
2425                          * simpler by stripping LSB should someone try to use
2426                          * odd threshold value.
2427                          */
2428                         frag_threshold &= ~0x1;
2429                 }
2430                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2431         }
2432
2433         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2434                 rts_threshold = nla_get_u32(
2435                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2436                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2437         }
2438
2439         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2440                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2441                         return -EINVAL;
2442
2443                 coverage_class = nla_get_u8(
2444                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2445                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2446         }
2447
2448         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2449                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2450                         return -EOPNOTSUPP;
2451
2452                 changed |= WIPHY_PARAM_DYN_ACK;
2453         }
2454
2455         if (changed) {
2456                 u8 old_retry_short, old_retry_long;
2457                 u32 old_frag_threshold, old_rts_threshold;
2458                 u8 old_coverage_class;
2459
2460                 if (!rdev->ops->set_wiphy_params)
2461                         return -EOPNOTSUPP;
2462
2463                 old_retry_short = rdev->wiphy.retry_short;
2464                 old_retry_long = rdev->wiphy.retry_long;
2465                 old_frag_threshold = rdev->wiphy.frag_threshold;
2466                 old_rts_threshold = rdev->wiphy.rts_threshold;
2467                 old_coverage_class = rdev->wiphy.coverage_class;
2468
2469                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2470                         rdev->wiphy.retry_short = retry_short;
2471                 if (changed & WIPHY_PARAM_RETRY_LONG)
2472                         rdev->wiphy.retry_long = retry_long;
2473                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2474                         rdev->wiphy.frag_threshold = frag_threshold;
2475                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2476                         rdev->wiphy.rts_threshold = rts_threshold;
2477                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2478                         rdev->wiphy.coverage_class = coverage_class;
2479
2480                 result = rdev_set_wiphy_params(rdev, changed);
2481                 if (result) {
2482                         rdev->wiphy.retry_short = old_retry_short;
2483                         rdev->wiphy.retry_long = old_retry_long;
2484                         rdev->wiphy.frag_threshold = old_frag_threshold;
2485                         rdev->wiphy.rts_threshold = old_rts_threshold;
2486                         rdev->wiphy.coverage_class = old_coverage_class;
2487                         return result;
2488                 }
2489         }
2490         return 0;
2491 }
2492
2493 static inline u64 wdev_id(struct wireless_dev *wdev)
2494 {
2495         return (u64)wdev->identifier |
2496                ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2497 }
2498
2499 static int nl80211_send_chandef(struct sk_buff *msg,
2500                                 const struct cfg80211_chan_def *chandef)
2501 {
2502         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2503                 return -EINVAL;
2504
2505         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2506                         chandef->chan->center_freq))
2507                 return -ENOBUFS;
2508         switch (chandef->width) {
2509         case NL80211_CHAN_WIDTH_20_NOHT:
2510         case NL80211_CHAN_WIDTH_20:
2511         case NL80211_CHAN_WIDTH_40:
2512                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2513                                 cfg80211_get_chandef_type(chandef)))
2514                         return -ENOBUFS;
2515                 break;
2516         default:
2517                 break;
2518         }
2519         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2520                 return -ENOBUFS;
2521         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2522                 return -ENOBUFS;
2523         if (chandef->center_freq2 &&
2524             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2525                 return -ENOBUFS;
2526         return 0;
2527 }
2528
2529 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2530                               struct cfg80211_registered_device *rdev,
2531                               struct wireless_dev *wdev, bool removal)
2532 {
2533         struct net_device *dev = wdev->netdev;
2534         u8 cmd = NL80211_CMD_NEW_INTERFACE;
2535         void *hdr;
2536
2537         if (removal)
2538                 cmd = NL80211_CMD_DEL_INTERFACE;
2539
2540         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2541         if (!hdr)
2542                 return -1;
2543
2544         if (dev &&
2545             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2546              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2547                 goto nla_put_failure;
2548
2549         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2550             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2551             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2552                               NL80211_ATTR_PAD) ||
2553             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2554             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2555                         rdev->devlist_generation ^
2556                         (cfg80211_rdev_list_generation << 2)))
2557                 goto nla_put_failure;
2558
2559         if (rdev->ops->get_channel) {
2560                 int ret;
2561                 struct cfg80211_chan_def chandef;
2562
2563                 ret = rdev_get_channel(rdev, wdev, &chandef);
2564                 if (ret == 0) {
2565                         if (nl80211_send_chandef(msg, &chandef))
2566                                 goto nla_put_failure;
2567                 }
2568         }
2569
2570         if (rdev->ops->get_tx_power) {
2571                 int dbm, ret;
2572
2573                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2574                 if (ret == 0 &&
2575                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2576                                 DBM_TO_MBM(dbm)))
2577                         goto nla_put_failure;
2578         }
2579
2580         if (wdev->ssid_len) {
2581                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2582                         goto nla_put_failure;
2583         }
2584
2585         genlmsg_end(msg, hdr);
2586         return 0;
2587
2588  nla_put_failure:
2589         genlmsg_cancel(msg, hdr);
2590         return -EMSGSIZE;
2591 }
2592
2593 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2594 {
2595         int wp_idx = 0;
2596         int if_idx = 0;
2597         int wp_start = cb->args[0];
2598         int if_start = cb->args[1];
2599         int filter_wiphy = -1;
2600         struct cfg80211_registered_device *rdev;
2601         struct wireless_dev *wdev;
2602
2603         rtnl_lock();
2604         if (!cb->args[2]) {
2605                 struct nl80211_dump_wiphy_state state = {
2606                         .filter_wiphy = -1,
2607                 };
2608                 int ret;
2609
2610                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2611                 if (ret)
2612                         return ret;
2613
2614                 filter_wiphy = state.filter_wiphy;
2615
2616                 /*
2617                  * if filtering, set cb->args[2] to +1 since 0 is the default
2618                  * value needed to determine that parsing is necessary.
2619                  */
2620                 if (filter_wiphy >= 0)
2621                         cb->args[2] = filter_wiphy + 1;
2622                 else
2623                         cb->args[2] = -1;
2624         } else if (cb->args[2] > 0) {
2625                 filter_wiphy = cb->args[2] - 1;
2626         }
2627
2628         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2629                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2630                         continue;
2631                 if (wp_idx < wp_start) {
2632                         wp_idx++;
2633                         continue;
2634                 }
2635
2636                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2637                         continue;
2638
2639                 if_idx = 0;
2640
2641                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2642                         if (if_idx < if_start) {
2643                                 if_idx++;
2644                                 continue;
2645                         }
2646                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2647                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2648                                                rdev, wdev, false) < 0) {
2649                                 goto out;
2650                         }
2651                         if_idx++;
2652                 }
2653
2654                 wp_idx++;
2655         }
2656  out:
2657         rtnl_unlock();
2658
2659         cb->args[0] = wp_idx;
2660         cb->args[1] = if_idx;
2661
2662         return skb->len;
2663 }
2664
2665 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2666 {
2667         struct sk_buff *msg;
2668         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2669         struct wireless_dev *wdev = info->user_ptr[1];
2670
2671         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2672         if (!msg)
2673                 return -ENOMEM;
2674
2675         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2676                                rdev, wdev, false) < 0) {
2677                 nlmsg_free(msg);
2678                 return -ENOBUFS;
2679         }
2680
2681         return genlmsg_reply(msg, info);
2682 }
2683
2684 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2685         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2686         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2687         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2688         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2689         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2690         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2691 };
2692
2693 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2694 {
2695         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2696         int flag;
2697
2698         *mntrflags = 0;
2699
2700         if (!nla)
2701                 return -EINVAL;
2702
2703         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2704                              nla, mntr_flags_policy))
2705                 return -EINVAL;
2706
2707         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2708                 if (flags[flag])
2709                         *mntrflags |= (1<<flag);
2710
2711         return 0;
2712 }
2713
2714 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2715                                struct net_device *netdev, u8 use_4addr,
2716                                enum nl80211_iftype iftype)
2717 {
2718         if (!use_4addr) {
2719                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2720                         return -EBUSY;
2721                 return 0;
2722         }
2723
2724         switch (iftype) {
2725         case NL80211_IFTYPE_AP_VLAN:
2726                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2727                         return 0;
2728                 break;
2729         case NL80211_IFTYPE_STATION:
2730                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2731                         return 0;
2732                 break;
2733         default:
2734                 break;
2735         }
2736
2737         return -EOPNOTSUPP;
2738 }
2739
2740 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2741 {
2742         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2743         struct vif_params params;
2744         int err;
2745         enum nl80211_iftype otype, ntype;
2746         struct net_device *dev = info->user_ptr[1];
2747         u32 _flags, *flags = NULL;
2748         bool change = false;
2749
2750         memset(&params, 0, sizeof(params));
2751
2752         otype = ntype = dev->ieee80211_ptr->iftype;
2753
2754         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2755                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2756                 if (otype != ntype)
2757                         change = true;
2758                 if (ntype > NL80211_IFTYPE_MAX)
2759                         return -EINVAL;
2760         }
2761
2762         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2763                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2764
2765                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2766                         return -EINVAL;
2767                 if (netif_running(dev))
2768                         return -EBUSY;
2769
2770                 wdev_lock(wdev);
2771                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2772                              IEEE80211_MAX_MESH_ID_LEN);
2773                 wdev->mesh_id_up_len =
2774                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2775                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2776                        wdev->mesh_id_up_len);
2777                 wdev_unlock(wdev);
2778         }
2779
2780         if (info->attrs[NL80211_ATTR_4ADDR]) {
2781                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2782                 change = true;
2783                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2784                 if (err)
2785                         return err;
2786         } else {
2787                 params.use_4addr = -1;
2788         }
2789
2790         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2791                 if (ntype != NL80211_IFTYPE_MONITOR)
2792                         return -EINVAL;
2793                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2794                                           &_flags);
2795                 if (err)
2796                         return err;
2797
2798                 flags = &_flags;
2799                 change = true;
2800         }
2801
2802         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2803                 const u8 *mumimo_groups;
2804                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2805
2806                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2807                         return -EOPNOTSUPP;
2808
2809                 mumimo_groups =
2810                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2811
2812                 /* bits 0 and 63 are reserved and must be zero */
2813                 if ((mumimo_groups[0] & BIT(7)) ||
2814                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(0)))
2815                         return -EINVAL;
2816
2817                 memcpy(params.vht_mumimo_groups, mumimo_groups,
2818                        VHT_MUMIMO_GROUPS_DATA_LEN);
2819                 change = true;
2820         }
2821
2822         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
2823                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2824
2825                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2826                         return -EOPNOTSUPP;
2827
2828                 nla_memcpy(params.macaddr,
2829                            info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR],
2830                            ETH_ALEN);
2831                 change = true;
2832         }
2833
2834         if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2835             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2836                 return -EOPNOTSUPP;
2837
2838         if (change)
2839                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2840         else
2841                 err = 0;
2842
2843         if (!err && params.use_4addr != -1)
2844                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2845
2846         return err;
2847 }
2848
2849 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2850 {
2851         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2852         struct vif_params params;
2853         struct wireless_dev *wdev;
2854         struct sk_buff *msg;
2855         int err;
2856         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2857         u32 flags;
2858
2859         /* to avoid failing a new interface creation due to pending removal */
2860         cfg80211_destroy_ifaces(rdev);
2861
2862         memset(&params, 0, sizeof(params));
2863
2864         if (!info->attrs[NL80211_ATTR_IFNAME])
2865                 return -EINVAL;
2866
2867         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2868                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2869                 if (type > NL80211_IFTYPE_MAX)
2870                         return -EINVAL;
2871         }
2872
2873         if (!rdev->ops->add_virtual_intf ||
2874             !(rdev->wiphy.interface_modes & (1 << type)))
2875                 return -EOPNOTSUPP;
2876
2877         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
2878              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2879             info->attrs[NL80211_ATTR_MAC]) {
2880                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2881                            ETH_ALEN);
2882                 if (!is_valid_ether_addr(params.macaddr))
2883                         return -EADDRNOTAVAIL;
2884         }
2885
2886         if (info->attrs[NL80211_ATTR_4ADDR]) {
2887                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2888                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2889                 if (err)
2890                         return err;
2891         }
2892
2893         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2894                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2895                                   &flags);
2896
2897         if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2898             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2899                 return -EOPNOTSUPP;
2900
2901         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2902         if (!msg)
2903                 return -ENOMEM;
2904
2905         wdev = rdev_add_virtual_intf(rdev,
2906                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2907                                 NET_NAME_USER, type, err ? NULL : &flags,
2908                                 &params);
2909         if (WARN_ON(!wdev)) {
2910                 nlmsg_free(msg);
2911                 return -EPROTO;
2912         } else if (IS_ERR(wdev)) {
2913                 nlmsg_free(msg);
2914                 return PTR_ERR(wdev);
2915         }
2916
2917         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2918                 wdev->owner_nlportid = info->snd_portid;
2919
2920         switch (type) {
2921         case NL80211_IFTYPE_MESH_POINT:
2922                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2923                         break;
2924                 wdev_lock(wdev);
2925                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2926                              IEEE80211_MAX_MESH_ID_LEN);
2927                 wdev->mesh_id_up_len =
2928                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2929                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2930                        wdev->mesh_id_up_len);
2931                 wdev_unlock(wdev);
2932                 break;
2933         case NL80211_IFTYPE_NAN:
2934         case NL80211_IFTYPE_P2P_DEVICE:
2935                 /*
2936                  * P2P Device and NAN do not have a netdev, so don't go
2937                  * through the netdev notifier and must be added here
2938                  */
2939                 mutex_init(&wdev->mtx);
2940                 INIT_LIST_HEAD(&wdev->event_list);
2941                 spin_lock_init(&wdev->event_lock);
2942                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2943                 spin_lock_init(&wdev->mgmt_registrations_lock);
2944
2945                 wdev->identifier = ++rdev->wdev_id;
2946                 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
2947                 rdev->devlist_generation++;
2948                 break;
2949         default:
2950                 break;
2951         }
2952
2953         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2954                                rdev, wdev, false) < 0) {
2955                 nlmsg_free(msg);
2956                 return -ENOBUFS;
2957         }
2958
2959         /*
2960          * For wdevs which have no associated netdev object (e.g. of type
2961          * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
2962          * For all other types, the event will be generated from the
2963          * netdev notifier
2964          */
2965         if (!wdev->netdev)
2966                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
2967
2968         return genlmsg_reply(msg, info);
2969 }
2970
2971 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2972 {
2973         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2974         struct wireless_dev *wdev = info->user_ptr[1];
2975
2976         if (!rdev->ops->del_virtual_intf)
2977                 return -EOPNOTSUPP;
2978
2979         /*
2980          * If we remove a wireless device without a netdev then clear
2981          * user_ptr[1] so that nl80211_post_doit won't dereference it
2982          * to check if it needs to do dev_put(). Otherwise it crashes
2983          * since the wdev has been freed, unlike with a netdev where
2984          * we need the dev_put() for the netdev to really be freed.
2985          */
2986         if (!wdev->netdev)
2987                 info->user_ptr[1] = NULL;
2988
2989         return rdev_del_virtual_intf(rdev, wdev);
2990 }
2991
2992 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2993 {
2994         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2995         struct net_device *dev = info->user_ptr[1];
2996         u16 noack_map;
2997
2998         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2999                 return -EINVAL;
3000
3001         if (!rdev->ops->set_noack_map)
3002                 return -EOPNOTSUPP;
3003
3004         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3005
3006         return rdev_set_noack_map(rdev, dev, noack_map);
3007 }
3008
3009 struct get_key_cookie {
3010         struct sk_buff *msg;
3011         int error;
3012         int idx;
3013 };
3014
3015 static void get_key_callback(void *c, struct key_params *params)
3016 {
3017         struct nlattr *key;
3018         struct get_key_cookie *cookie = c;
3019
3020         if ((params->key &&
3021              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3022                      params->key_len, params->key)) ||
3023             (params->seq &&
3024              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3025                      params->seq_len, params->seq)) ||
3026             (params->cipher &&
3027              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3028                          params->cipher)))
3029                 goto nla_put_failure;
3030
3031         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3032         if (!key)
3033                 goto nla_put_failure;
3034
3035         if ((params->key &&
3036              nla_put(cookie->msg, NL80211_KEY_DATA,
3037                      params->key_len, params->key)) ||
3038             (params->seq &&
3039              nla_put(cookie->msg, NL80211_KEY_SEQ,
3040                      params->seq_len, params->seq)) ||
3041             (params->cipher &&
3042              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3043                          params->cipher)))
3044                 goto nla_put_failure;
3045
3046         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
3047                 goto nla_put_failure;
3048
3049         nla_nest_end(cookie->msg, key);
3050
3051         return;
3052  nla_put_failure:
3053         cookie->error = 1;
3054 }
3055
3056 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3057 {
3058         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3059         int err;
3060         struct net_device *dev = info->user_ptr[1];
3061         u8 key_idx = 0;
3062         const u8 *mac_addr = NULL;
3063         bool pairwise;
3064         struct get_key_cookie cookie = {
3065                 .error = 0,
3066         };
3067         void *hdr;
3068         struct sk_buff *msg;
3069
3070         if (info->attrs[NL80211_ATTR_KEY_IDX])
3071                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3072
3073         if (key_idx > 5)
3074                 return -EINVAL;
3075
3076         if (info->attrs[NL80211_ATTR_MAC])
3077                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3078
3079         pairwise = !!mac_addr;
3080         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3081                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3082
3083                 if (kt >= NUM_NL80211_KEYTYPES)
3084                         return -EINVAL;
3085                 if (kt != NL80211_KEYTYPE_GROUP &&
3086                     kt != NL80211_KEYTYPE_PAIRWISE)
3087                         return -EINVAL;
3088                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3089         }
3090
3091         if (!rdev->ops->get_key)
3092                 return -EOPNOTSUPP;
3093
3094         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3095                 return -ENOENT;
3096
3097         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3098         if (!msg)
3099                 return -ENOMEM;
3100
3101         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3102                              NL80211_CMD_NEW_KEY);
3103         if (!hdr)
3104                 goto nla_put_failure;
3105
3106         cookie.msg = msg;
3107         cookie.idx = key_idx;
3108
3109         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3110             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3111                 goto nla_put_failure;
3112         if (mac_addr &&
3113             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3114                 goto nla_put_failure;
3115
3116         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3117                            get_key_callback);
3118
3119         if (err)
3120                 goto free_msg;
3121
3122         if (cookie.error)
3123                 goto nla_put_failure;
3124
3125         genlmsg_end(msg, hdr);
3126         return genlmsg_reply(msg, info);
3127
3128  nla_put_failure:
3129         err = -ENOBUFS;
3130  free_msg:
3131         nlmsg_free(msg);
3132         return err;
3133 }
3134
3135 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3136 {
3137         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3138         struct key_parse key;
3139         int err;
3140         struct net_device *dev = info->user_ptr[1];
3141
3142         err = nl80211_parse_key(info, &key);
3143         if (err)
3144                 return err;
3145
3146         if (key.idx < 0)
3147                 return -EINVAL;
3148
3149         /* only support setting default key */
3150         if (!key.def && !key.defmgmt)
3151                 return -EINVAL;
3152
3153         wdev_lock(dev->ieee80211_ptr);
3154
3155         if (key.def) {
3156                 if (!rdev->ops->set_default_key) {
3157                         err = -EOPNOTSUPP;
3158                         goto out;
3159                 }
3160
3161                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3162                 if (err)
3163                         goto out;
3164
3165                 err = rdev_set_default_key(rdev, dev, key.idx,
3166                                                  key.def_uni, key.def_multi);
3167
3168                 if (err)
3169                         goto out;
3170
3171 #ifdef CONFIG_CFG80211_WEXT
3172                 dev->ieee80211_ptr->wext.default_key = key.idx;
3173 #endif
3174         } else {
3175                 if (key.def_uni || !key.def_multi) {
3176                         err = -EINVAL;
3177                         goto out;
3178                 }
3179
3180                 if (!rdev->ops->set_default_mgmt_key) {
3181                         err = -EOPNOTSUPP;
3182                         goto out;
3183                 }
3184
3185                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3186                 if (err)
3187                         goto out;
3188
3189                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3190                 if (err)
3191                         goto out;
3192
3193 #ifdef CONFIG_CFG80211_WEXT
3194                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3195 #endif
3196         }
3197
3198  out:
3199         wdev_unlock(dev->ieee80211_ptr);
3200
3201         return err;
3202 }
3203
3204 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3205 {
3206         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3207         int err;
3208         struct net_device *dev = info->user_ptr[1];
3209         struct key_parse key;
3210         const u8 *mac_addr = NULL;
3211
3212         err = nl80211_parse_key(info, &key);
3213         if (err)
3214                 return err;
3215
3216         if (!key.p.key)
3217                 return -EINVAL;
3218
3219         if (info->attrs[NL80211_ATTR_MAC])
3220                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3221
3222         if (key.type == -1) {
3223                 if (mac_addr)
3224                         key.type = NL80211_KEYTYPE_PAIRWISE;
3225                 else
3226                         key.type = NL80211_KEYTYPE_GROUP;
3227         }
3228
3229         /* for now */
3230         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3231             key.type != NL80211_KEYTYPE_GROUP)
3232                 return -EINVAL;
3233
3234         if (!rdev->ops->add_key)
3235                 return -EOPNOTSUPP;
3236
3237         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3238                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3239                                            mac_addr))
3240                 return -EINVAL;
3241
3242         wdev_lock(dev->ieee80211_ptr);
3243         err = nl80211_key_allowed(dev->ieee80211_ptr);
3244         if (!err)
3245                 err = rdev_add_key(rdev, dev, key.idx,
3246                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3247                                     mac_addr, &key.p);
3248         wdev_unlock(dev->ieee80211_ptr);
3249
3250         return err;
3251 }
3252
3253 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3254 {
3255         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3256         int err;
3257         struct net_device *dev = info->user_ptr[1];
3258         u8 *mac_addr = NULL;
3259         struct key_parse key;
3260
3261         err = nl80211_parse_key(info, &key);
3262         if (err)
3263                 return err;
3264
3265         if (info->attrs[NL80211_ATTR_MAC])
3266                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3267
3268         if (key.type == -1) {
3269                 if (mac_addr)
3270                         key.type = NL80211_KEYTYPE_PAIRWISE;
3271                 else
3272                         key.type = NL80211_KEYTYPE_GROUP;
3273         }
3274
3275         /* for now */
3276         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3277             key.type != NL80211_KEYTYPE_GROUP)
3278                 return -EINVAL;
3279
3280         if (!rdev->ops->del_key)
3281                 return -EOPNOTSUPP;
3282
3283         wdev_lock(dev->ieee80211_ptr);
3284         err = nl80211_key_allowed(dev->ieee80211_ptr);
3285
3286         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3287             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3288                 err = -ENOENT;
3289
3290         if (!err)
3291                 err = rdev_del_key(rdev, dev, key.idx,
3292                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3293                                    mac_addr);
3294
3295 #ifdef CONFIG_CFG80211_WEXT
3296         if (!err) {
3297                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3298                         dev->ieee80211_ptr->wext.default_key = -1;
3299                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3300                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3301         }
3302 #endif
3303         wdev_unlock(dev->ieee80211_ptr);
3304
3305         return err;
3306 }
3307
3308 /* This function returns an error or the number of nested attributes */
3309 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3310 {
3311         struct nlattr *attr;
3312         int n_entries = 0, tmp;
3313
3314         nla_for_each_nested(attr, nl_attr, tmp) {
3315                 if (nla_len(attr) != ETH_ALEN)
3316                         return -EINVAL;
3317
3318                 n_entries++;
3319         }
3320
3321         return n_entries;
3322 }
3323
3324 /*
3325  * This function parses ACL information and allocates memory for ACL data.
3326  * On successful return, the calling function is responsible to free the
3327  * ACL buffer returned by this function.
3328  */
3329 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3330                                                 struct genl_info *info)
3331 {
3332         enum nl80211_acl_policy acl_policy;
3333         struct nlattr *attr;
3334         struct cfg80211_acl_data *acl;
3335         int i = 0, n_entries, tmp;
3336
3337         if (!wiphy->max_acl_mac_addrs)
3338                 return ERR_PTR(-EOPNOTSUPP);
3339
3340         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3341                 return ERR_PTR(-EINVAL);
3342
3343         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3344         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3345             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3346                 return ERR_PTR(-EINVAL);
3347
3348         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3349                 return ERR_PTR(-EINVAL);
3350
3351         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3352         if (n_entries < 0)
3353                 return ERR_PTR(n_entries);
3354
3355         if (n_entries > wiphy->max_acl_mac_addrs)
3356                 return ERR_PTR(-ENOTSUPP);
3357
3358         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3359                       GFP_KERNEL);
3360         if (!acl)
3361                 return ERR_PTR(-ENOMEM);
3362
3363         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3364                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3365                 i++;
3366         }
3367
3368         acl->n_acl_entries = n_entries;
3369         acl->acl_policy = acl_policy;
3370
3371         return acl;
3372 }
3373
3374 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3375 {
3376         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3377         struct net_device *dev = info->user_ptr[1];
3378         struct cfg80211_acl_data *acl;
3379         int err;
3380
3381         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3382             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3383                 return -EOPNOTSUPP;
3384
3385         if (!dev->ieee80211_ptr->beacon_interval)
3386                 return -EINVAL;
3387
3388         acl = parse_acl_data(&rdev->wiphy, info);
3389         if (IS_ERR(acl))
3390                 return PTR_ERR(acl);
3391
3392         err = rdev_set_mac_acl(rdev, dev, acl);
3393
3394         kfree(acl);
3395
3396         return err;
3397 }
3398
3399 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3400                            u8 *rates, u8 rates_len)
3401 {
3402         u8 i;
3403         u32 mask = 0;
3404
3405         for (i = 0; i < rates_len; i++) {
3406                 int rate = (rates[i] & 0x7f) * 5;
3407                 int ridx;
3408
3409                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3410                         struct ieee80211_rate *srate =
3411                                 &sband->bitrates[ridx];
3412                         if (rate == srate->bitrate) {
3413                                 mask |= 1 << ridx;
3414                                 break;
3415                         }
3416                 }
3417                 if (ridx == sband->n_bitrates)
3418                         return 0; /* rate not found */
3419         }
3420
3421         return mask;
3422 }
3423
3424 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3425                                u8 *rates, u8 rates_len,
3426                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3427 {
3428         u8 i;
3429
3430         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3431
3432         for (i = 0; i < rates_len; i++) {
3433                 int ridx, rbit;
3434
3435                 ridx = rates[i] / 8;
3436                 rbit = BIT(rates[i] % 8);
3437
3438                 /* check validity */
3439                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3440                         return false;
3441
3442                 /* check availability */
3443                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3444                         mcs[ridx] |= rbit;
3445                 else
3446                         return false;
3447         }
3448
3449         return true;
3450 }
3451
3452 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3453 {
3454         u16 mcs_mask = 0;
3455
3456         switch (vht_mcs_map) {
3457         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3458                 break;
3459         case IEEE80211_VHT_MCS_SUPPORT_0_7:
3460                 mcs_mask = 0x00FF;
3461                 break;
3462         case IEEE80211_VHT_MCS_SUPPORT_0_8:
3463                 mcs_mask = 0x01FF;
3464                 break;
3465         case IEEE80211_VHT_MCS_SUPPORT_0_9:
3466                 mcs_mask = 0x03FF;
3467                 break;
3468         default:
3469                 break;
3470         }
3471
3472         return mcs_mask;
3473 }
3474
3475 static void vht_build_mcs_mask(u16 vht_mcs_map,
3476                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3477 {
3478         u8 nss;
3479
3480         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3481                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3482                 vht_mcs_map >>= 2;
3483         }
3484 }
3485
3486 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3487                              struct nl80211_txrate_vht *txrate,
3488                              u16 mcs[NL80211_VHT_NSS_MAX])
3489 {
3490         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3491         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3492         u8 i;
3493
3494         if (!sband->vht_cap.vht_supported)
3495                 return false;
3496
3497         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3498
3499         /* Build vht_mcs_mask from VHT capabilities */
3500         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3501
3502         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3503                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3504                         mcs[i] = txrate->mcs[i];
3505                 else
3506                         return false;
3507         }
3508
3509         return true;
3510 }
3511
3512 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3513         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3514                                     .len = NL80211_MAX_SUPP_RATES },
3515         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3516                                 .len = NL80211_MAX_SUPP_HT_RATES },
3517         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3518         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
3519 };
3520
3521 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3522                                          struct cfg80211_bitrate_mask *mask)
3523 {
3524         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3525         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3526         int rem, i;
3527         struct nlattr *tx_rates;
3528         struct ieee80211_supported_band *sband;
3529         u16 vht_tx_mcs_map;
3530
3531         memset(mask, 0, sizeof(*mask));
3532         /* Default to all rates enabled */
3533         for (i = 0; i < NUM_NL80211_BANDS; i++) {
3534                 sband = rdev->wiphy.bands[i];
3535
3536                 if (!sband)
3537                         continue;
3538
3539                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3540                 memcpy(mask->control[i].ht_mcs,
3541                        sband->ht_cap.mcs.rx_mask,
3542                        sizeof(mask->control[i].ht_mcs));
3543
3544                 if (!sband->vht_cap.vht_supported)
3545                         continue;
3546
3547                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3548                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3549         }
3550
3551         /* if no rates are given set it back to the defaults */
3552         if (!info->attrs[NL80211_ATTR_TX_RATES])
3553                 goto out;
3554
3555         /* The nested attribute uses enum nl80211_band as the index. This maps
3556          * directly to the enum nl80211_band values used in cfg80211.
3557          */
3558         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3559         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3560                 enum nl80211_band band = nla_type(tx_rates);
3561                 int err;
3562
3563                 if (band < 0 || band >= NUM_NL80211_BANDS)
3564                         return -EINVAL;
3565                 sband = rdev->wiphy.bands[band];
3566                 if (sband == NULL)
3567                         return -EINVAL;
3568                 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3569                                        nl80211_txattr_policy);
3570                 if (err)
3571                         return err;
3572                 if (tb[NL80211_TXRATE_LEGACY]) {
3573                         mask->control[band].legacy = rateset_to_mask(
3574                                 sband,
3575                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
3576                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
3577                         if ((mask->control[band].legacy == 0) &&
3578                             nla_len(tb[NL80211_TXRATE_LEGACY]))
3579                                 return -EINVAL;
3580                 }
3581                 if (tb[NL80211_TXRATE_HT]) {
3582                         if (!ht_rateset_to_mask(
3583                                         sband,
3584                                         nla_data(tb[NL80211_TXRATE_HT]),
3585                                         nla_len(tb[NL80211_TXRATE_HT]),
3586                                         mask->control[band].ht_mcs))
3587                                 return -EINVAL;
3588                 }
3589                 if (tb[NL80211_TXRATE_VHT]) {
3590                         if (!vht_set_mcs_mask(
3591                                         sband,
3592                                         nla_data(tb[NL80211_TXRATE_VHT]),
3593                                         mask->control[band].vht_mcs))
3594                                 return -EINVAL;
3595                 }
3596                 if (tb[NL80211_TXRATE_GI]) {
3597                         mask->control[band].gi =
3598                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
3599                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3600                                 return -EINVAL;
3601                 }
3602
3603                 if (mask->control[band].legacy == 0) {
3604                         /* don't allow empty legacy rates if HT or VHT
3605                          * are not even supported.
3606                          */
3607                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3608                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
3609                                 return -EINVAL;
3610
3611                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3612                                 if (mask->control[band].ht_mcs[i])
3613                                         goto out;
3614
3615                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3616                                 if (mask->control[band].vht_mcs[i])
3617                                         goto out;
3618
3619                         /* legacy and mcs rates may not be both empty */
3620                         return -EINVAL;
3621                 }
3622         }
3623
3624 out:
3625         return 0;
3626 }
3627
3628 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3629                                    enum nl80211_band band,
3630                                    struct cfg80211_bitrate_mask *beacon_rate)
3631 {
3632         u32 count_ht, count_vht, i;
3633         u32 rate = beacon_rate->control[band].legacy;
3634
3635         /* Allow only one rate */
3636         if (hweight32(rate) > 1)
3637                 return -EINVAL;
3638
3639         count_ht = 0;
3640         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3641                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3642                         return -EINVAL;
3643                 } else if (beacon_rate->control[band].ht_mcs[i]) {
3644                         count_ht++;
3645                         if (count_ht > 1)
3646                                 return -EINVAL;
3647                 }
3648                 if (count_ht && rate)
3649                         return -EINVAL;
3650         }
3651
3652         count_vht = 0;
3653         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3654                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
3655                         return -EINVAL;
3656                 } else if (beacon_rate->control[band].vht_mcs[i]) {
3657                         count_vht++;
3658                         if (count_vht > 1)
3659                                 return -EINVAL;
3660                 }
3661                 if (count_vht && rate)
3662                         return -EINVAL;
3663         }
3664
3665         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
3666                 return -EINVAL;
3667
3668         if (rate &&
3669             !wiphy_ext_feature_isset(&rdev->wiphy,
3670                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
3671                 return -EINVAL;
3672         if (count_ht &&
3673             !wiphy_ext_feature_isset(&rdev->wiphy,
3674                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
3675                 return -EINVAL;
3676         if (count_vht &&
3677             !wiphy_ext_feature_isset(&rdev->wiphy,
3678                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
3679                 return -EINVAL;
3680
3681         return 0;
3682 }
3683
3684 static int nl80211_parse_beacon(struct nlattr *attrs[],
3685                                 struct cfg80211_beacon_data *bcn)
3686 {
3687         bool haveinfo = false;
3688
3689         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3690             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3691             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3692             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3693                 return -EINVAL;
3694
3695         memset(bcn, 0, sizeof(*bcn));
3696
3697         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3698                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3699                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3700                 if (!bcn->head_len)
3701                         return -EINVAL;
3702                 haveinfo = true;
3703         }
3704
3705         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3706                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3707                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3708                 haveinfo = true;
3709         }
3710
3711         if (!haveinfo)
3712                 return -EINVAL;
3713
3714         if (attrs[NL80211_ATTR_IE]) {
3715                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3716                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3717         }
3718
3719         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3720                 bcn->proberesp_ies =
3721                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3722                 bcn->proberesp_ies_len =
3723                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3724         }
3725
3726         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3727                 bcn->assocresp_ies =
3728                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3729                 bcn->assocresp_ies_len =
3730                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3731         }
3732
3733         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3734                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3735                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3736         }
3737
3738         return 0;
3739 }
3740
3741 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3742                                    struct cfg80211_ap_settings *params)
3743 {
3744         struct wireless_dev *wdev;
3745         bool ret = false;
3746
3747         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3748                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3749                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3750                         continue;
3751
3752                 if (!wdev->preset_chandef.chan)
3753                         continue;
3754
3755                 params->chandef = wdev->preset_chandef;
3756                 ret = true;
3757                 break;
3758         }
3759
3760         return ret;
3761 }
3762
3763 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3764                                     enum nl80211_auth_type auth_type,
3765                                     enum nl80211_commands cmd)
3766 {
3767         if (auth_type > NL80211_AUTHTYPE_MAX)
3768                 return false;
3769
3770         switch (cmd) {
3771         case NL80211_CMD_AUTHENTICATE:
3772                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3773                     auth_type == NL80211_AUTHTYPE_SAE)
3774                         return false;
3775                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3776                                              NL80211_EXT_FEATURE_FILS_STA) &&
3777                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3778                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3779                      auth_type == NL80211_AUTHTYPE_FILS_PK))
3780                         return false;
3781                 return true;
3782         case NL80211_CMD_CONNECT:
3783         case NL80211_CMD_START_AP:
3784                 /* SAE not supported yet */
3785                 if (auth_type == NL80211_AUTHTYPE_SAE)
3786                         return false;
3787                 /* FILS not supported yet */
3788                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3789                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3790                     auth_type == NL80211_AUTHTYPE_FILS_PK)
3791                         return false;
3792                 return true;
3793         default:
3794                 return false;
3795         }
3796 }
3797
3798 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3799 {
3800         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3801         struct net_device *dev = info->user_ptr[1];
3802         struct wireless_dev *wdev = dev->ieee80211_ptr;
3803         struct cfg80211_ap_settings params;
3804         int err;
3805
3806         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3807             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3808                 return -EOPNOTSUPP;
3809
3810         if (!rdev->ops->start_ap)
3811                 return -EOPNOTSUPP;
3812
3813         if (wdev->beacon_interval)
3814                 return -EALREADY;
3815
3816         memset(&params, 0, sizeof(params));
3817
3818         /* these are required for START_AP */
3819         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3820             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3821             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3822                 return -EINVAL;
3823
3824         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3825         if (err)
3826                 return err;
3827
3828         params.beacon_interval =
3829                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3830         params.dtim_period =
3831                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3832
3833         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
3834                                            params.beacon_interval);
3835         if (err)
3836                 return err;
3837
3838         /*
3839          * In theory, some of these attributes should be required here
3840          * but since they were not used when the command was originally
3841          * added, keep them optional for old user space programs to let
3842          * them continue to work with drivers that do not need the
3843          * additional information -- drivers must check!
3844          */
3845         if (info->attrs[NL80211_ATTR_SSID]) {
3846                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3847                 params.ssid_len =
3848                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3849                 if (params.ssid_len == 0 ||
3850                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3851                         return -EINVAL;
3852         }
3853
3854         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3855                 params.hidden_ssid = nla_get_u32(
3856                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3857                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3858                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3859                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3860                         return -EINVAL;
3861         }
3862
3863         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3864
3865         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3866                 params.auth_type = nla_get_u32(
3867                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3868                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3869                                              NL80211_CMD_START_AP))
3870                         return -EINVAL;
3871         } else
3872                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3873
3874         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3875                                       NL80211_MAX_NR_CIPHER_SUITES);
3876         if (err)
3877                 return err;
3878
3879         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3880                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3881                         return -EOPNOTSUPP;
3882                 params.inactivity_timeout = nla_get_u16(
3883                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3884         }
3885
3886         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3887                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3888                         return -EINVAL;
3889                 params.p2p_ctwindow =
3890                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3891                 if (params.p2p_ctwindow > 127)
3892                         return -EINVAL;
3893                 if (params.p2p_ctwindow != 0 &&
3894                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3895                         return -EINVAL;
3896         }
3897
3898         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3899                 u8 tmp;
3900
3901                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3902                         return -EINVAL;
3903                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3904                 if (tmp > 1)
3905                         return -EINVAL;
3906                 params.p2p_opp_ps = tmp;
3907                 if (params.p2p_opp_ps != 0 &&
3908                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3909                         return -EINVAL;
3910         }
3911
3912         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3913                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3914                 if (err)
3915                         return err;
3916         } else if (wdev->preset_chandef.chan) {
3917                 params.chandef = wdev->preset_chandef;
3918         } else if (!nl80211_get_ap_channel(rdev, &params))
3919                 return -EINVAL;
3920
3921         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
3922                                            wdev->iftype))
3923                 return -EINVAL;
3924
3925         if (info->attrs[NL80211_ATTR_TX_RATES]) {
3926                 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
3927                 if (err)
3928                         return err;
3929
3930                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
3931                                               &params.beacon_rate);
3932                 if (err)
3933                         return err;
3934         }
3935
3936         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3937                 params.smps_mode =
3938                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3939                 switch (params.smps_mode) {
3940                 case NL80211_SMPS_OFF:
3941                         break;
3942                 case NL80211_SMPS_STATIC:
3943                         if (!(rdev->wiphy.features &
3944                               NL80211_FEATURE_STATIC_SMPS))
3945                                 return -EINVAL;
3946                         break;
3947                 case NL80211_SMPS_DYNAMIC:
3948                         if (!(rdev->wiphy.features &
3949                               NL80211_FEATURE_DYNAMIC_SMPS))
3950                                 return -EINVAL;
3951                         break;
3952                 default:
3953                         return -EINVAL;
3954                 }
3955         } else {
3956                 params.smps_mode = NL80211_SMPS_OFF;
3957         }
3958
3959         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
3960         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
3961                 return -EOPNOTSUPP;
3962
3963         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3964                 params.acl = parse_acl_data(&rdev->wiphy, info);
3965                 if (IS_ERR(params.acl))
3966                         return PTR_ERR(params.acl);
3967         }
3968
3969         wdev_lock(wdev);
3970         err = rdev_start_ap(rdev, dev, &params);
3971         if (!err) {
3972                 wdev->preset_chandef = params.chandef;
3973                 wdev->beacon_interval = params.beacon_interval;
3974                 wdev->chandef = params.chandef;
3975                 wdev->ssid_len = params.ssid_len;
3976                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3977         }
3978         wdev_unlock(wdev);
3979
3980         kfree(params.acl);
3981
3982         return err;
3983 }
3984
3985 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3986 {
3987         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3988         struct net_device *dev = info->user_ptr[1];
3989         struct wireless_dev *wdev = dev->ieee80211_ptr;
3990         struct cfg80211_beacon_data params;
3991         int err;
3992
3993         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3994             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3995                 return -EOPNOTSUPP;
3996
3997         if (!rdev->ops->change_beacon)
3998                 return -EOPNOTSUPP;
3999
4000         if (!wdev->beacon_interval)
4001                 return -EINVAL;
4002
4003         err = nl80211_parse_beacon(info->attrs, &params);
4004         if (err)
4005                 return err;
4006
4007         wdev_lock(wdev);
4008         err = rdev_change_beacon(rdev, dev, &params);
4009         wdev_unlock(wdev);
4010
4011         return err;
4012 }
4013
4014 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4015 {
4016         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4017         struct net_device *dev = info->user_ptr[1];
4018
4019         return cfg80211_stop_ap(rdev, dev, false);
4020 }
4021
4022 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4023         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4024         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4025         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4026         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4027         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4028         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4029 };
4030
4031 static int parse_station_flags(struct genl_info *info,
4032                                enum nl80211_iftype iftype,
4033                                struct station_parameters *params)
4034 {
4035         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4036         struct nlattr *nla;
4037         int flag;
4038
4039         /*
4040          * Try parsing the new attribute first so userspace
4041          * can specify both for older kernels.
4042          */
4043         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4044         if (nla) {
4045                 struct nl80211_sta_flag_update *sta_flags;
4046
4047                 sta_flags = nla_data(nla);
4048                 params->sta_flags_mask = sta_flags->mask;
4049                 params->sta_flags_set = sta_flags->set;
4050                 params->sta_flags_set &= params->sta_flags_mask;
4051                 if ((params->sta_flags_mask |
4052                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4053                         return -EINVAL;
4054                 return 0;
4055         }
4056
4057         /* if present, parse the old attribute */
4058
4059         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4060         if (!nla)
4061                 return 0;
4062
4063         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
4064                              nla, sta_flags_policy))
4065                 return -EINVAL;
4066
4067         /*
4068          * Only allow certain flags for interface types so that
4069          * other attributes are silently ignored. Remember that
4070          * this is backward compatibility code with old userspace
4071          * and shouldn't be hit in other cases anyway.
4072          */
4073         switch (iftype) {
4074         case NL80211_IFTYPE_AP:
4075         case NL80211_IFTYPE_AP_VLAN:
4076         case NL80211_IFTYPE_P2P_GO:
4077                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4078                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4079                                          BIT(NL80211_STA_FLAG_WME) |
4080                                          BIT(NL80211_STA_FLAG_MFP);
4081                 break;
4082         case NL80211_IFTYPE_P2P_CLIENT:
4083         case NL80211_IFTYPE_STATION:
4084                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4085                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
4086                 break;
4087         case NL80211_IFTYPE_MESH_POINT:
4088                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4089                                          BIT(NL80211_STA_FLAG_MFP) |
4090                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
4091         default:
4092                 return -EINVAL;
4093         }
4094
4095         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4096                 if (flags[flag]) {
4097                         params->sta_flags_set |= (1<<flag);
4098
4099                         /* no longer support new API additions in old API */
4100                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4101                                 return -EINVAL;
4102                 }
4103         }
4104
4105         return 0;
4106 }
4107
4108 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4109                                  int attr)
4110 {
4111         struct nlattr *rate;
4112         u32 bitrate;
4113         u16 bitrate_compat;
4114         enum nl80211_attrs rate_flg;
4115
4116         rate = nla_nest_start(msg, attr);
4117         if (!rate)
4118                 return false;
4119
4120         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4121         bitrate = cfg80211_calculate_bitrate(info);
4122         /* report 16-bit bitrate only if we can */
4123         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4124         if (bitrate > 0 &&
4125             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4126                 return false;
4127         if (bitrate_compat > 0 &&
4128             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4129                 return false;
4130
4131         switch (info->bw) {
4132         case RATE_INFO_BW_5:
4133                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4134                 break;
4135         case RATE_INFO_BW_10:
4136                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4137                 break;
4138         default:
4139                 WARN_ON(1);
4140                 /* fall through */
4141         case RATE_INFO_BW_20:
4142                 rate_flg = 0;
4143                 break;
4144         case RATE_INFO_BW_40:
4145                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4146                 break;
4147         case RATE_INFO_BW_80:
4148                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4149                 break;
4150         case RATE_INFO_BW_160:
4151                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4152                 break;
4153         }
4154
4155         if (rate_flg && nla_put_flag(msg, rate_flg))
4156                 return false;
4157
4158         if (info->flags & RATE_INFO_FLAGS_MCS) {
4159                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4160                         return false;
4161                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4162                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4163                         return false;
4164         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4165                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4166                         return false;
4167                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4168                         return false;
4169                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4170                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4171                         return false;
4172         }
4173
4174         nla_nest_end(msg, rate);
4175         return true;
4176 }
4177
4178 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4179                                int id)
4180 {
4181         void *attr;
4182         int i = 0;
4183
4184         if (!mask)
4185                 return true;
4186
4187         attr = nla_nest_start(msg, id);
4188         if (!attr)
4189                 return false;
4190
4191         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4192                 if (!(mask & BIT(i)))
4193                         continue;
4194
4195                 if (nla_put_u8(msg, i, signal[i]))
4196                         return false;
4197         }
4198
4199         nla_nest_end(msg, attr);
4200
4201         return true;
4202 }
4203
4204 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4205                                 u32 seq, int flags,
4206                                 struct cfg80211_registered_device *rdev,
4207                                 struct net_device *dev,
4208                                 const u8 *mac_addr, struct station_info *sinfo)
4209 {
4210         void *hdr;
4211         struct nlattr *sinfoattr, *bss_param;
4212
4213         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4214         if (!hdr)
4215                 return -1;
4216
4217         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4218             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4219             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4220                 goto nla_put_failure;
4221
4222         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4223         if (!sinfoattr)
4224                 goto nla_put_failure;
4225
4226 #define PUT_SINFO(attr, memb, type) do {                                \
4227         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
4228         if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) &&      \
4229             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
4230                              sinfo->memb))                              \
4231                 goto nla_put_failure;                                   \
4232         } while (0)
4233 #define PUT_SINFO_U64(attr, memb) do {                                  \
4234         if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) &&      \
4235             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
4236                               sinfo->memb, NL80211_STA_INFO_PAD))       \
4237                 goto nla_put_failure;                                   \
4238         } while (0)
4239
4240         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4241         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4242
4243         if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
4244                              BIT(NL80211_STA_INFO_RX_BYTES64)) &&
4245             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4246                         (u32)sinfo->rx_bytes))
4247                 goto nla_put_failure;
4248
4249         if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
4250                              BIT(NL80211_STA_INFO_TX_BYTES64)) &&
4251             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4252                         (u32)sinfo->tx_bytes))
4253                 goto nla_put_failure;
4254
4255         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4256         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4257         PUT_SINFO(LLID, llid, u16);
4258         PUT_SINFO(PLID, plid, u16);
4259         PUT_SINFO(PLINK_STATE, plink_state, u8);
4260         PUT_SINFO_U64(RX_DURATION, rx_duration);
4261
4262         switch (rdev->wiphy.signal_type) {
4263         case CFG80211_SIGNAL_TYPE_MBM:
4264                 PUT_SINFO(SIGNAL, signal, u8);
4265                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4266                 break;
4267         default:
4268                 break;
4269         }
4270         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4271                 if (!nl80211_put_signal(msg, sinfo->chains,
4272                                         sinfo->chain_signal,
4273                                         NL80211_STA_INFO_CHAIN_SIGNAL))
4274                         goto nla_put_failure;
4275         }
4276         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4277                 if (!nl80211_put_signal(msg, sinfo->chains,
4278                                         sinfo->chain_signal_avg,
4279                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4280                         goto nla_put_failure;
4281         }
4282         if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
4283                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4284                                           NL80211_STA_INFO_TX_BITRATE))
4285                         goto nla_put_failure;
4286         }
4287         if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
4288                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4289                                           NL80211_STA_INFO_RX_BITRATE))
4290                         goto nla_put_failure;
4291         }
4292
4293         PUT_SINFO(RX_PACKETS, rx_packets, u32);
4294         PUT_SINFO(TX_PACKETS, tx_packets, u32);
4295         PUT_SINFO(TX_RETRIES, tx_retries, u32);
4296         PUT_SINFO(TX_FAILED, tx_failed, u32);
4297         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4298         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4299         PUT_SINFO(LOCAL_PM, local_pm, u32);
4300         PUT_SINFO(PEER_PM, peer_pm, u32);
4301         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4302
4303         if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
4304                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4305                 if (!bss_param)
4306                         goto nla_put_failure;
4307
4308                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4309                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4310                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4311                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4312                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4313                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4314                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4315                                sinfo->bss_param.dtim_period) ||
4316                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4317                                 sinfo->bss_param.beacon_interval))
4318                         goto nla_put_failure;
4319
4320                 nla_nest_end(msg, bss_param);
4321         }
4322         if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
4323             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4324                     sizeof(struct nl80211_sta_flag_update),
4325                     &sinfo->sta_flags))
4326                 goto nla_put_failure;
4327
4328         PUT_SINFO_U64(T_OFFSET, t_offset);
4329         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4330         PUT_SINFO_U64(BEACON_RX, rx_beacon);
4331         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4332
4333 #undef PUT_SINFO
4334 #undef PUT_SINFO_U64
4335
4336         if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
4337                 struct nlattr *tidsattr;
4338                 int tid;
4339
4340                 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4341                 if (!tidsattr)
4342                         goto nla_put_failure;
4343
4344                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4345                         struct cfg80211_tid_stats *tidstats;
4346                         struct nlattr *tidattr;
4347
4348                         tidstats = &sinfo->pertid[tid];
4349
4350                         if (!tidstats->filled)
4351                                 continue;
4352
4353                         tidattr = nla_nest_start(msg, tid + 1);
4354                         if (!tidattr)
4355                                 goto nla_put_failure;
4356
4357 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
4358         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
4359             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
4360                               tidstats->memb, NL80211_TID_STATS_PAD))   \
4361                 goto nla_put_failure;                                   \
4362         } while (0)
4363
4364                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4365                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4366                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4367                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4368
4369 #undef PUT_TIDVAL_U64
4370                         nla_nest_end(msg, tidattr);
4371                 }
4372
4373                 nla_nest_end(msg, tidsattr);
4374         }
4375
4376         nla_nest_end(msg, sinfoattr);
4377
4378         if (sinfo->assoc_req_ies_len &&
4379             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4380                     sinfo->assoc_req_ies))
4381                 goto nla_put_failure;
4382
4383         genlmsg_end(msg, hdr);
4384         return 0;
4385
4386  nla_put_failure:
4387         genlmsg_cancel(msg, hdr);
4388         return -EMSGSIZE;
4389 }
4390
4391 static int nl80211_dump_station(struct sk_buff *skb,
4392                                 struct netlink_callback *cb)
4393 {
4394         struct station_info sinfo;
4395         struct cfg80211_registered_device *rdev;
4396         struct wireless_dev *wdev;
4397         u8 mac_addr[ETH_ALEN];
4398         int sta_idx = cb->args[2];
4399         int err;
4400
4401         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4402         if (err)
4403                 return err;
4404
4405         if (!wdev->netdev) {
4406                 err = -EINVAL;
4407                 goto out_err;
4408         }
4409
4410         if (!rdev->ops->dump_station) {
4411                 err = -EOPNOTSUPP;
4412                 goto out_err;
4413         }
4414
4415         while (1) {
4416                 memset(&sinfo, 0, sizeof(sinfo));
4417                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4418                                         mac_addr, &sinfo);
4419                 if (err == -ENOENT)
4420                         break;
4421                 if (err)
4422                         goto out_err;
4423
4424                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4425                                 NETLINK_CB(cb->skb).portid,
4426                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4427                                 rdev, wdev->netdev, mac_addr,
4428                                 &sinfo) < 0)
4429                         goto out;
4430
4431                 sta_idx++;
4432         }
4433
4434  out:
4435         cb->args[2] = sta_idx;
4436         err = skb->len;
4437  out_err:
4438         nl80211_finish_wdev_dump(rdev);
4439
4440         return err;
4441 }
4442
4443 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4444 {
4445         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4446         struct net_device *dev = info->user_ptr[1];
4447         struct station_info sinfo;
4448         struct sk_buff *msg;
4449         u8 *mac_addr = NULL;
4450         int err;
4451
4452         memset(&sinfo, 0, sizeof(sinfo));
4453
4454         if (!info->attrs[NL80211_ATTR_MAC])
4455                 return -EINVAL;
4456
4457         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4458
4459         if (!rdev->ops->get_station)
4460                 return -EOPNOTSUPP;
4461
4462         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4463         if (err)
4464                 return err;
4465
4466         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4467         if (!msg)
4468                 return -ENOMEM;
4469
4470         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4471                                  info->snd_portid, info->snd_seq, 0,
4472                                  rdev, dev, mac_addr, &sinfo) < 0) {
4473                 nlmsg_free(msg);
4474                 return -ENOBUFS;
4475         }
4476
4477         return genlmsg_reply(msg, info);
4478 }
4479
4480 int cfg80211_check_station_change(struct wiphy *wiphy,
4481                                   struct station_parameters *params,
4482                                   enum cfg80211_station_type statype)
4483 {
4484         if (params->listen_interval != -1 &&
4485             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4486                 return -EINVAL;
4487
4488         if (params->support_p2p_ps != -1 &&
4489             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4490                 return -EINVAL;
4491
4492         if (params->aid &&
4493             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4494             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4495                 return -EINVAL;
4496
4497         /* When you run into this, adjust the code below for the new flag */
4498         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4499
4500         switch (statype) {
4501         case CFG80211_STA_MESH_PEER_KERNEL:
4502         case CFG80211_STA_MESH_PEER_USER:
4503                 /*
4504                  * No ignoring the TDLS flag here -- the userspace mesh
4505                  * code doesn't have the bug of including TDLS in the
4506                  * mask everywhere.
4507                  */
4508                 if (params->sta_flags_mask &
4509                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4510                                   BIT(NL80211_STA_FLAG_MFP) |
4511                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
4512                         return -EINVAL;
4513                 break;
4514         case CFG80211_STA_TDLS_PEER_SETUP:
4515         case CFG80211_STA_TDLS_PEER_ACTIVE:
4516                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4517                         return -EINVAL;
4518                 /* ignore since it can't change */
4519                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4520                 break;
4521         default:
4522                 /* disallow mesh-specific things */
4523                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4524                         return -EINVAL;
4525                 if (params->local_pm)
4526                         return -EINVAL;
4527                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4528                         return -EINVAL;
4529         }
4530
4531         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4532             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4533                 /* TDLS can't be set, ... */
4534                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4535                         return -EINVAL;
4536                 /*
4537                  * ... but don't bother the driver with it. This works around
4538                  * a hostapd/wpa_supplicant issue -- it always includes the
4539                  * TLDS_PEER flag in the mask even for AP mode.
4540                  */
4541                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4542         }
4543
4544         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4545             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4546                 /* reject other things that can't change */
4547                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4548                         return -EINVAL;
4549                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4550                         return -EINVAL;
4551                 if (params->supported_rates)
4552                         return -EINVAL;
4553                 if (params->ext_capab || params->ht_capa || params->vht_capa)
4554                         return -EINVAL;
4555         }
4556
4557         if (statype != CFG80211_STA_AP_CLIENT &&
4558             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4559                 if (params->vlan)
4560                         return -EINVAL;
4561         }
4562
4563         switch (statype) {
4564         case CFG80211_STA_AP_MLME_CLIENT:
4565                 /* Use this only for authorizing/unauthorizing a station */
4566                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4567                         return -EOPNOTSUPP;
4568                 break;
4569         case CFG80211_STA_AP_CLIENT:
4570         case CFG80211_STA_AP_CLIENT_UNASSOC:
4571                 /* accept only the listed bits */
4572                 if (params->sta_flags_mask &
4573                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4574                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4575                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
4576                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4577                                   BIT(NL80211_STA_FLAG_WME) |
4578                                   BIT(NL80211_STA_FLAG_MFP)))
4579                         return -EINVAL;
4580
4581                 /* but authenticated/associated only if driver handles it */
4582                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4583                     params->sta_flags_mask &
4584                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4585                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4586                         return -EINVAL;
4587                 break;
4588         case CFG80211_STA_IBSS:
4589         case CFG80211_STA_AP_STA:
4590                 /* reject any changes other than AUTHORIZED */
4591                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4592                         return -EINVAL;
4593                 break;
4594         case CFG80211_STA_TDLS_PEER_SETUP:
4595                 /* reject any changes other than AUTHORIZED or WME */
4596                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4597                                                BIT(NL80211_STA_FLAG_WME)))
4598                         return -EINVAL;
4599                 /* force (at least) rates when authorizing */
4600                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4601                     !params->supported_rates)
4602                         return -EINVAL;
4603                 break;
4604         case CFG80211_STA_TDLS_PEER_ACTIVE:
4605                 /* reject any changes */
4606                 return -EINVAL;
4607         case CFG80211_STA_MESH_PEER_KERNEL:
4608                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4609                         return -EINVAL;
4610                 break;
4611         case CFG80211_STA_MESH_PEER_USER:
4612                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4613                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4614                         return -EINVAL;
4615                 break;
4616         }
4617
4618         return 0;
4619 }
4620 EXPORT_SYMBOL(cfg80211_check_station_change);
4621
4622 /*
4623  * Get vlan interface making sure it is running and on the right wiphy.
4624  */
4625 static struct net_device *get_vlan(struct genl_info *info,
4626                                    struct cfg80211_registered_device *rdev)
4627 {
4628         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4629         struct net_device *v;
4630         int ret;
4631
4632         if (!vlanattr)
4633                 return NULL;
4634
4635         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4636         if (!v)
4637                 return ERR_PTR(-ENODEV);
4638
4639         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4640                 ret = -EINVAL;
4641                 goto error;
4642         }
4643
4644         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4645             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4646             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4647                 ret = -EINVAL;
4648                 goto error;
4649         }
4650
4651         if (!netif_running(v)) {
4652                 ret = -ENETDOWN;
4653                 goto error;
4654         }
4655
4656         return v;
4657  error:
4658         dev_put(v);
4659         return ERR_PTR(ret);
4660 }
4661
4662 static const struct nla_policy
4663 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4664         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4665         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4666 };
4667
4668 static int nl80211_parse_sta_wme(struct genl_info *info,
4669                                  struct station_parameters *params)
4670 {
4671         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4672         struct nlattr *nla;
4673         int err;
4674
4675         /* parse WME attributes if present */
4676         if (!info->attrs[NL80211_ATTR_STA_WME])
4677                 return 0;
4678
4679         nla = info->attrs[NL80211_ATTR_STA_WME];
4680         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4681                                nl80211_sta_wme_policy);
4682         if (err)
4683                 return err;
4684
4685         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4686                 params->uapsd_queues = nla_get_u8(
4687                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
4688         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4689                 return -EINVAL;
4690
4691         if (tb[NL80211_STA_WME_MAX_SP])
4692                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4693
4694         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4695                 return -EINVAL;
4696
4697         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4698
4699         return 0;
4700 }
4701
4702 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4703                                       struct station_parameters *params)
4704 {
4705         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4706                 params->supported_channels =
4707                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4708                 params->supported_channels_len =
4709                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4710                 /*
4711                  * Need to include at least one (first channel, number of
4712                  * channels) tuple for each subband, and must have proper
4713                  * tuples for the rest of the data as well.
4714                  */
4715                 if (params->supported_channels_len < 2)
4716                         return -EINVAL;
4717                 if (params->supported_channels_len % 2)
4718                         return -EINVAL;
4719         }
4720
4721         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4722                 params->supported_oper_classes =
4723                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4724                 params->supported_oper_classes_len =
4725                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4726                 /*
4727                  * The value of the Length field of the Supported Operating
4728                  * Classes element is between 2 and 253.
4729                  */
4730                 if (params->supported_oper_classes_len < 2 ||
4731                     params->supported_oper_classes_len > 253)
4732                         return -EINVAL;
4733         }
4734         return 0;
4735 }
4736
4737 static int nl80211_set_station_tdls(struct genl_info *info,
4738                                     struct station_parameters *params)
4739 {
4740         int err;
4741         /* Dummy STA entry gets updated once the peer capabilities are known */
4742         if (info->attrs[NL80211_ATTR_PEER_AID])
4743                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4744         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4745                 params->ht_capa =
4746                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4747         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4748                 params->vht_capa =
4749                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4750
4751         err = nl80211_parse_sta_channel_info(info, params);
4752         if (err)
4753                 return err;
4754
4755         return nl80211_parse_sta_wme(info, params);
4756 }
4757
4758 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4759 {
4760         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4761         struct net_device *dev = info->user_ptr[1];
4762         struct station_parameters params;
4763         u8 *mac_addr;
4764         int err;
4765
4766         memset(&params, 0, sizeof(params));
4767
4768         if (!rdev->ops->change_station)
4769                 return -EOPNOTSUPP;
4770
4771         /*
4772          * AID and listen_interval properties can be set only for unassociated
4773          * station. Include these parameters here and will check them in
4774          * cfg80211_check_station_change().
4775          */
4776         if (info->attrs[NL80211_ATTR_STA_AID])
4777                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4778
4779         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4780                 params.listen_interval =
4781                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4782         else
4783                 params.listen_interval = -1;
4784
4785         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4786                 u8 tmp;
4787
4788                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4789                 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4790                         return -EINVAL;
4791
4792                 params.support_p2p_ps = tmp;
4793         } else {
4794                 params.support_p2p_ps = -1;
4795         }
4796
4797         if (!info->attrs[NL80211_ATTR_MAC])
4798                 return -EINVAL;
4799
4800         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4801
4802         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4803                 params.supported_rates =
4804                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4805                 params.supported_rates_len =
4806                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4807         }
4808
4809         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4810                 params.capability =
4811                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4812                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4813         }
4814
4815         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4816                 params.ext_capab =
4817                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4818                 params.ext_capab_len =
4819                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4820         }
4821
4822         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4823                 return -EINVAL;
4824
4825         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4826                 params.plink_action =
4827                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4828                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4829                         return -EINVAL;
4830         }
4831
4832         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4833                 params.plink_state =
4834                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4835                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4836                         return -EINVAL;
4837                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
4838                         params.peer_aid = nla_get_u16(
4839                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
4840                         if (params.peer_aid > IEEE80211_MAX_AID)
4841                                 return -EINVAL;
4842                 }
4843                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4844         }
4845
4846         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4847                 enum nl80211_mesh_power_mode pm = nla_get_u32(
4848                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4849
4850                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4851                     pm > NL80211_MESH_POWER_MAX)
4852                         return -EINVAL;
4853
4854                 params.local_pm = pm;
4855         }
4856
4857         /* Include parameters for TDLS peer (will check later) */
4858         err = nl80211_set_station_tdls(info, &params);
4859         if (err)
4860                 return err;
4861
4862         params.vlan = get_vlan(info, rdev);
4863         if (IS_ERR(params.vlan))
4864                 return PTR_ERR(params.vlan);
4865
4866         switch (dev->ieee80211_ptr->iftype) {
4867         case NL80211_IFTYPE_AP:
4868         case NL80211_IFTYPE_AP_VLAN:
4869         case NL80211_IFTYPE_P2P_GO:
4870         case NL80211_IFTYPE_P2P_CLIENT:
4871         case NL80211_IFTYPE_STATION:
4872         case NL80211_IFTYPE_ADHOC:
4873         case NL80211_IFTYPE_MESH_POINT:
4874                 break;
4875         default:
4876                 err = -EOPNOTSUPP;
4877                 goto out_put_vlan;
4878         }
4879
4880         /* driver will call cfg80211_check_station_change() */
4881         err = rdev_change_station(rdev, dev, mac_addr, &params);
4882
4883  out_put_vlan:
4884         if (params.vlan)
4885                 dev_put(params.vlan);
4886
4887         return err;
4888 }
4889
4890 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4891 {
4892         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4893         int err;
4894         struct net_device *dev = info->user_ptr[1];
4895         struct station_parameters params;
4896         u8 *mac_addr = NULL;
4897         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4898                          BIT(NL80211_STA_FLAG_ASSOCIATED);
4899
4900         memset(&params, 0, sizeof(params));
4901
4902         if (!rdev->ops->add_station)
4903                 return -EOPNOTSUPP;
4904
4905         if (!info->attrs[NL80211_ATTR_MAC])
4906                 return -EINVAL;
4907
4908         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4909                 return -EINVAL;
4910
4911         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4912                 return -EINVAL;
4913
4914         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4915             !info->attrs[NL80211_ATTR_PEER_AID])
4916                 return -EINVAL;
4917
4918         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4919         params.supported_rates =
4920                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4921         params.supported_rates_len =
4922                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4923         params.listen_interval =
4924                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4925
4926         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4927                 u8 tmp;
4928
4929                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4930                 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4931                         return -EINVAL;
4932
4933                 params.support_p2p_ps = tmp;
4934         } else {
4935                 /*
4936                  * if not specified, assume it's supported for P2P GO interface,
4937                  * and is NOT supported for AP interface
4938                  */
4939                 params.support_p2p_ps =
4940                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
4941         }
4942
4943         if (info->attrs[NL80211_ATTR_PEER_AID])
4944                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4945         else
4946                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4947         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4948                 return -EINVAL;
4949
4950         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4951                 params.capability =
4952                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4953                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4954         }
4955
4956         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4957                 params.ext_capab =
4958                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4959                 params.ext_capab_len =
4960                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4961         }
4962
4963         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4964                 params.ht_capa =
4965                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4966
4967         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4968                 params.vht_capa =
4969                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4970
4971         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4972                 params.opmode_notif_used = true;
4973                 params.opmode_notif =
4974                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4975         }
4976
4977         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4978                 params.plink_action =
4979                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4980                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4981                         return -EINVAL;
4982         }
4983
4984         err = nl80211_parse_sta_channel_info(info, &params);
4985         if (err)
4986                 return err;
4987
4988         err = nl80211_parse_sta_wme(info, &params);
4989         if (err)
4990                 return err;
4991
4992         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4993                 return -EINVAL;
4994
4995         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
4996          * as userspace might just pass through the capabilities from the IEs
4997          * directly, rather than enforcing this restriction and returning an
4998          * error in this case.
4999          */
5000         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5001                 params.ht_capa = NULL;
5002                 params.vht_capa = NULL;
5003         }
5004
5005         /* When you run into this, adjust the code below for the new flag */
5006         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5007
5008         switch (dev->ieee80211_ptr->iftype) {
5009         case NL80211_IFTYPE_AP:
5010         case NL80211_IFTYPE_AP_VLAN:
5011         case NL80211_IFTYPE_P2P_GO:
5012                 /* ignore WME attributes if iface/sta is not capable */
5013                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5014                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5015                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5016
5017                 /* TDLS peers cannot be added */
5018                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5019                     info->attrs[NL80211_ATTR_PEER_AID])
5020                         return -EINVAL;
5021                 /* but don't bother the driver with it */
5022                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5023
5024                 /* allow authenticated/associated only if driver handles it */
5025                 if (!(rdev->wiphy.features &
5026                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5027                     params.sta_flags_mask & auth_assoc)
5028                         return -EINVAL;
5029
5030                 /* Older userspace, or userspace wanting to be compatible with
5031                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5032                  * and assoc flags in the mask, but assumes the station will be
5033                  * added as associated anyway since this was the required driver
5034                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5035                  * introduced.
5036                  * In order to not bother drivers with this quirk in the API
5037                  * set the flags in both the mask and set for new stations in
5038                  * this case.
5039                  */
5040                 if (!(params.sta_flags_mask & auth_assoc)) {
5041                         params.sta_flags_mask |= auth_assoc;
5042                         params.sta_flags_set |= auth_assoc;
5043                 }
5044
5045                 /* must be last in here for error handling */
5046                 params.vlan = get_vlan(info, rdev);
5047                 if (IS_ERR(params.vlan))
5048                         return PTR_ERR(params.vlan);
5049                 break;
5050         case NL80211_IFTYPE_MESH_POINT:
5051                 /* ignore uAPSD data */
5052                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5053
5054                 /* associated is disallowed */
5055                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5056                         return -EINVAL;
5057                 /* TDLS peers cannot be added */
5058                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5059                     info->attrs[NL80211_ATTR_PEER_AID])
5060                         return -EINVAL;
5061                 break;
5062         case NL80211_IFTYPE_STATION:
5063         case NL80211_IFTYPE_P2P_CLIENT:
5064                 /* ignore uAPSD data */
5065                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5066
5067                 /* these are disallowed */
5068                 if (params.sta_flags_mask &
5069                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5070                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5071                         return -EINVAL;
5072                 /* Only TDLS peers can be added */
5073                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5074                         return -EINVAL;
5075                 /* Can only add if TDLS ... */
5076                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5077                         return -EOPNOTSUPP;
5078                 /* ... with external setup is supported */
5079                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5080                         return -EOPNOTSUPP;
5081                 /*
5082                  * Older wpa_supplicant versions always mark the TDLS peer
5083                  * as authorized, but it shouldn't yet be.
5084                  */
5085                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5086                 break;
5087         default:
5088                 return -EOPNOTSUPP;
5089         }
5090
5091         /* be aware of params.vlan when changing code here */
5092
5093         err = rdev_add_station(rdev, dev, mac_addr, &params);
5094
5095         if (params.vlan)
5096                 dev_put(params.vlan);
5097         return err;
5098 }
5099
5100 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5101 {
5102         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5103         struct net_device *dev = info->user_ptr[1];
5104         struct station_del_parameters params;
5105
5106         memset(&params, 0, sizeof(params));
5107
5108         if (info->attrs[NL80211_ATTR_MAC])
5109                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5110
5111         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5112             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5113             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5114             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5115                 return -EINVAL;
5116
5117         if (!rdev->ops->del_station)
5118                 return -EOPNOTSUPP;
5119
5120         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5121                 params.subtype =
5122                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5123                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5124                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5125                         return -EINVAL;
5126         } else {
5127                 /* Default to Deauthentication frame */
5128                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5129         }
5130
5131         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5132                 params.reason_code =
5133                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5134                 if (params.reason_code == 0)
5135                         return -EINVAL; /* 0 is reserved */
5136         } else {
5137                 /* Default to reason code 2 */
5138                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5139         }
5140
5141         return rdev_del_station(rdev, dev, &params);
5142 }
5143
5144 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5145                                 int flags, struct net_device *dev,
5146                                 u8 *dst, u8 *next_hop,
5147                                 struct mpath_info *pinfo)
5148 {
5149         void *hdr;
5150         struct nlattr *pinfoattr;
5151
5152         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5153         if (!hdr)
5154                 return -1;
5155
5156         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5157             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5158             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5159             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5160                 goto nla_put_failure;
5161
5162         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5163         if (!pinfoattr)
5164                 goto nla_put_failure;
5165         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5166             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5167                         pinfo->frame_qlen))
5168                 goto nla_put_failure;
5169         if (((pinfo->filled & MPATH_INFO_SN) &&
5170              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5171             ((pinfo->filled & MPATH_INFO_METRIC) &&
5172              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5173                          pinfo->metric)) ||
5174             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5175              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5176                          pinfo->exptime)) ||
5177             ((pinfo->filled & MPATH_INFO_FLAGS) &&
5178              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5179                         pinfo->flags)) ||
5180             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5181              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5182                          pinfo->discovery_timeout)) ||
5183             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5184              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5185                         pinfo->discovery_retries)))
5186                 goto nla_put_failure;
5187
5188         nla_nest_end(msg, pinfoattr);
5189
5190         genlmsg_end(msg, hdr);
5191         return 0;
5192
5193  nla_put_failure:
5194         genlmsg_cancel(msg, hdr);
5195         return -EMSGSIZE;
5196 }
5197
5198 static int nl80211_dump_mpath(struct sk_buff *skb,
5199                               struct netlink_callback *cb)
5200 {
5201         struct mpath_info pinfo;
5202         struct cfg80211_registered_device *rdev;
5203         struct wireless_dev *wdev;
5204         u8 dst[ETH_ALEN];
5205         u8 next_hop[ETH_ALEN];
5206         int path_idx = cb->args[2];
5207         int err;
5208
5209         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5210         if (err)
5211                 return err;
5212
5213         if (!rdev->ops->dump_mpath) {
5214                 err = -EOPNOTSUPP;
5215                 goto out_err;
5216         }
5217
5218         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5219                 err = -EOPNOTSUPP;
5220                 goto out_err;
5221         }
5222
5223         while (1) {
5224                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5225                                       next_hop, &pinfo);
5226                 if (err == -ENOENT)
5227                         break;
5228                 if (err)
5229                         goto out_err;
5230
5231                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5232                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
5233                                        wdev->netdev, dst, next_hop,
5234                                        &pinfo) < 0)
5235                         goto out;
5236
5237                 path_idx++;
5238         }
5239
5240  out:
5241         cb->args[2] = path_idx;
5242         err = skb->len;
5243  out_err:
5244         nl80211_finish_wdev_dump(rdev);
5245         return err;
5246 }
5247
5248 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5249 {
5250         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5251         int err;
5252         struct net_device *dev = info->user_ptr[1];
5253         struct mpath_info pinfo;
5254         struct sk_buff *msg;
5255         u8 *dst = NULL;
5256         u8 next_hop[ETH_ALEN];
5257
5258         memset(&pinfo, 0, sizeof(pinfo));
5259
5260         if (!info->attrs[NL80211_ATTR_MAC])
5261                 return -EINVAL;
5262
5263         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5264
5265         if (!rdev->ops->get_mpath)
5266                 return -EOPNOTSUPP;
5267
5268         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5269                 return -EOPNOTSUPP;
5270
5271         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5272         if (err)
5273                 return err;
5274
5275         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5276         if (!msg)
5277                 return -ENOMEM;
5278
5279         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5280                                  dev, dst, next_hop, &pinfo) < 0) {
5281                 nlmsg_free(msg);
5282                 return -ENOBUFS;
5283         }
5284
5285         return genlmsg_reply(msg, info);
5286 }
5287
5288 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5289 {
5290         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5291         struct net_device *dev = info->user_ptr[1];
5292         u8 *dst = NULL;
5293         u8 *next_hop = NULL;
5294
5295         if (!info->attrs[NL80211_ATTR_MAC])
5296                 return -EINVAL;
5297
5298         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5299                 return -EINVAL;
5300
5301         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5302         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5303
5304         if (!rdev->ops->change_mpath)
5305                 return -EOPNOTSUPP;
5306
5307         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5308                 return -EOPNOTSUPP;
5309
5310         return rdev_change_mpath(rdev, dev, dst, next_hop);
5311 }
5312
5313 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5314 {
5315         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5316         struct net_device *dev = info->user_ptr[1];
5317         u8 *dst = NULL;
5318         u8 *next_hop = NULL;
5319
5320         if (!info->attrs[NL80211_ATTR_MAC])
5321                 return -EINVAL;
5322
5323         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5324                 return -EINVAL;
5325
5326         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5327         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5328
5329         if (!rdev->ops->add_mpath)
5330                 return -EOPNOTSUPP;
5331
5332         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5333                 return -EOPNOTSUPP;
5334
5335         return rdev_add_mpath(rdev, dev, dst, next_hop);
5336 }
5337
5338 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5339 {
5340         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5341         struct net_device *dev = info->user_ptr[1];
5342         u8 *dst = NULL;
5343
5344         if (info->attrs[NL80211_ATTR_MAC])
5345                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5346
5347         if (!rdev->ops->del_mpath)
5348                 return -EOPNOTSUPP;
5349
5350         return rdev_del_mpath(rdev, dev, dst);
5351 }
5352
5353 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5354 {
5355         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5356         int err;
5357         struct net_device *dev = info->user_ptr[1];
5358         struct mpath_info pinfo;
5359         struct sk_buff *msg;
5360         u8 *dst = NULL;
5361         u8 mpp[ETH_ALEN];
5362
5363         memset(&pinfo, 0, sizeof(pinfo));
5364
5365         if (!info->attrs[NL80211_ATTR_MAC])
5366                 return -EINVAL;
5367
5368         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5369
5370         if (!rdev->ops->get_mpp)
5371                 return -EOPNOTSUPP;
5372
5373         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5374                 return -EOPNOTSUPP;
5375
5376         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5377         if (err)
5378                 return err;
5379
5380         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5381         if (!msg)
5382                 return -ENOMEM;
5383
5384         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5385                                dev, dst, mpp, &pinfo) < 0) {
5386                 nlmsg_free(msg);
5387                 return -ENOBUFS;
5388         }
5389
5390         return genlmsg_reply(msg, info);
5391 }
5392
5393 static int nl80211_dump_mpp(struct sk_buff *skb,
5394                             struct netlink_callback *cb)
5395 {
5396         struct mpath_info pinfo;
5397         struct cfg80211_registered_device *rdev;
5398         struct wireless_dev *wdev;
5399         u8 dst[ETH_ALEN];
5400         u8 mpp[ETH_ALEN];
5401         int path_idx = cb->args[2];
5402         int err;
5403
5404         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5405         if (err)
5406                 return err;
5407
5408         if (!rdev->ops->dump_mpp) {
5409                 err = -EOPNOTSUPP;
5410                 goto out_err;
5411         }
5412
5413         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5414                 err = -EOPNOTSUPP;
5415                 goto out_err;
5416         }
5417
5418         while (1) {
5419                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5420                                     mpp, &pinfo);
5421                 if (err == -ENOENT)
5422                         break;
5423                 if (err)
5424                         goto out_err;
5425
5426                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5427                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
5428                                        wdev->netdev, dst, mpp,
5429                                        &pinfo) < 0)
5430                         goto out;
5431
5432                 path_idx++;
5433         }
5434
5435  out:
5436         cb->args[2] = path_idx;
5437         err = skb->len;
5438  out_err:
5439         nl80211_finish_wdev_dump(rdev);
5440         return err;
5441 }
5442
5443 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5444 {
5445         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5446         struct net_device *dev = info->user_ptr[1];
5447         struct wireless_dev *wdev = dev->ieee80211_ptr;
5448         struct bss_parameters params;
5449         int err;
5450
5451         memset(&params, 0, sizeof(params));
5452         /* default to not changing parameters */
5453         params.use_cts_prot = -1;
5454         params.use_short_preamble = -1;
5455         params.use_short_slot_time = -1;
5456         params.ap_isolate = -1;
5457         params.ht_opmode = -1;
5458         params.p2p_ctwindow = -1;
5459         params.p2p_opp_ps = -1;
5460
5461         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5462                 params.use_cts_prot =
5463                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5464         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5465                 params.use_short_preamble =
5466                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5467         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5468                 params.use_short_slot_time =
5469                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5470         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5471                 params.basic_rates =
5472                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5473                 params.basic_rates_len =
5474                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5475         }
5476         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5477                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5478         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5479                 params.ht_opmode =
5480                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5481
5482         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5483                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5484                         return -EINVAL;
5485                 params.p2p_ctwindow =
5486                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5487                 if (params.p2p_ctwindow < 0)
5488                         return -EINVAL;
5489                 if (params.p2p_ctwindow != 0 &&
5490                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5491                         return -EINVAL;
5492         }
5493
5494         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5495                 u8 tmp;
5496
5497                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5498                         return -EINVAL;
5499                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5500                 if (tmp > 1)
5501                         return -EINVAL;
5502                 params.p2p_opp_ps = tmp;
5503                 if (params.p2p_opp_ps &&
5504                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5505                         return -EINVAL;
5506         }
5507
5508         if (!rdev->ops->change_bss)
5509                 return -EOPNOTSUPP;
5510
5511         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5512             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5513                 return -EOPNOTSUPP;
5514
5515         wdev_lock(wdev);
5516         err = rdev_change_bss(rdev, dev, &params);
5517         wdev_unlock(wdev);
5518
5519         return err;
5520 }
5521
5522 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5523 {
5524         char *data = NULL;
5525         bool is_indoor;
5526         enum nl80211_user_reg_hint_type user_reg_hint_type;
5527         u32 owner_nlportid;
5528
5529         /*
5530          * You should only get this when cfg80211 hasn't yet initialized
5531          * completely when built-in to the kernel right between the time
5532          * window between nl80211_init() and regulatory_init(), if that is
5533          * even possible.
5534          */
5535         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5536                 return -EINPROGRESS;
5537
5538         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5539                 user_reg_hint_type =
5540                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5541         else
5542                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5543
5544         switch (user_reg_hint_type) {
5545         case NL80211_USER_REG_HINT_USER:
5546         case NL80211_USER_REG_HINT_CELL_BASE:
5547                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5548                         return -EINVAL;
5549
5550                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5551                 return regulatory_hint_user(data, user_reg_hint_type);
5552         case NL80211_USER_REG_HINT_INDOOR:
5553                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5554                         owner_nlportid = info->snd_portid;
5555                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5556                 } else {
5557                         owner_nlportid = 0;
5558                         is_indoor = true;
5559                 }
5560
5561                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5562         default:
5563                 return -EINVAL;
5564         }
5565 }
5566
5567 static int nl80211_get_mesh_config(struct sk_buff *skb,
5568                                    struct genl_info *info)
5569 {
5570         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5571         struct net_device *dev = info->user_ptr[1];
5572         struct wireless_dev *wdev = dev->ieee80211_ptr;
5573         struct mesh_config cur_params;
5574         int err = 0;
5575         void *hdr;
5576         struct nlattr *pinfoattr;
5577         struct sk_buff *msg;
5578
5579         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5580                 return -EOPNOTSUPP;
5581
5582         if (!rdev->ops->get_mesh_config)
5583                 return -EOPNOTSUPP;
5584
5585         wdev_lock(wdev);
5586         /* If not connected, get default parameters */
5587         if (!wdev->mesh_id_len)
5588                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5589         else
5590                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5591         wdev_unlock(wdev);
5592
5593         if (err)
5594                 return err;
5595
5596         /* Draw up a netlink message to send back */
5597         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5598         if (!msg)
5599                 return -ENOMEM;
5600         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5601                              NL80211_CMD_GET_MESH_CONFIG);
5602         if (!hdr)
5603                 goto out;
5604         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5605         if (!pinfoattr)
5606                 goto nla_put_failure;
5607         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5608             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5609                         cur_params.dot11MeshRetryTimeout) ||
5610             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5611                         cur_params.dot11MeshConfirmTimeout) ||
5612             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5613                         cur_params.dot11MeshHoldingTimeout) ||
5614             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5615                         cur_params.dot11MeshMaxPeerLinks) ||
5616             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5617                        cur_params.dot11MeshMaxRetries) ||
5618             nla_put_u8(msg, NL80211_MESHCONF_TTL,
5619                        cur_params.dot11MeshTTL) ||
5620             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5621                        cur_params.element_ttl) ||
5622             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5623                        cur_params.auto_open_plinks) ||
5624             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5625                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5626             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5627                        cur_params.dot11MeshHWMPmaxPREQretries) ||
5628             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5629                         cur_params.path_refresh_time) ||
5630             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5631                         cur_params.min_discovery_timeout) ||
5632             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5633                         cur_params.dot11MeshHWMPactivePathTimeout) ||
5634             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5635                         cur_params.dot11MeshHWMPpreqMinInterval) ||
5636             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5637                         cur_params.dot11MeshHWMPperrMinInterval) ||
5638             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5639                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5640             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5641                        cur_params.dot11MeshHWMPRootMode) ||
5642             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5643                         cur_params.dot11MeshHWMPRannInterval) ||
5644             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5645                        cur_params.dot11MeshGateAnnouncementProtocol) ||
5646             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5647                        cur_params.dot11MeshForwarding) ||
5648             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5649                         cur_params.rssi_threshold) ||
5650             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5651                         cur_params.ht_opmode) ||
5652             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5653                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5654             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5655                         cur_params.dot11MeshHWMProotInterval) ||
5656             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5657                         cur_params.dot11MeshHWMPconfirmationInterval) ||
5658             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5659                         cur_params.power_mode) ||
5660             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5661                         cur_params.dot11MeshAwakeWindowDuration) ||
5662             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5663                         cur_params.plink_timeout))
5664                 goto nla_put_failure;
5665         nla_nest_end(msg, pinfoattr);
5666         genlmsg_end(msg, hdr);
5667         return genlmsg_reply(msg, info);
5668
5669  nla_put_failure:
5670         genlmsg_cancel(msg, hdr);
5671  out:
5672         nlmsg_free(msg);
5673         return -ENOBUFS;
5674 }
5675
5676 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5677         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5678         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5679         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5680         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5681         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5682         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5683         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5684         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5685         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5686         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5687         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5688         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5689         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5690         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5691         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5692         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5693         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5694         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5695         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5696         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5697         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5698         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5699         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5700         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5701         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5702         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5703         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5704         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5705 };
5706
5707 static const struct nla_policy
5708         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5709         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5710         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5711         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5712         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5713         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5714         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5715         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5716                                     .len = IEEE80211_MAX_DATA_LEN },
5717         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5718 };
5719
5720 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
5721 {
5722         u8 val = nla_get_u8(nla);
5723         if (val < min || val > max)
5724                 return -EINVAL;
5725         *out = val;
5726         return 0;
5727 }
5728
5729 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
5730 {
5731         u8 val = nla_get_u8(nla);
5732         if (val < min || val > max)
5733                 return -EINVAL;
5734         *out = val;
5735         return 0;
5736 }
5737
5738 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
5739 {
5740         u16 val = nla_get_u16(nla);
5741         if (val < min || val > max)
5742                 return -EINVAL;
5743         *out = val;
5744         return 0;
5745 }
5746
5747 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
5748 {
5749         u32 val = nla_get_u32(nla);
5750         if (val < min || val > max)
5751                 return -EINVAL;
5752         *out = val;
5753         return 0;
5754 }
5755
5756 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
5757 {
5758         s32 val = nla_get_s32(nla);
5759         if (val < min || val > max)
5760                 return -EINVAL;
5761         *out = val;
5762         return 0;
5763 }
5764
5765 static int nl80211_check_power_mode(const struct nlattr *nla,
5766                                     enum nl80211_mesh_power_mode min,
5767                                     enum nl80211_mesh_power_mode max,
5768                                     enum nl80211_mesh_power_mode *out)
5769 {
5770         u32 val = nla_get_u32(nla);
5771         if (val < min || val > max)
5772                 return -EINVAL;
5773         *out = val;
5774         return 0;
5775 }
5776
5777 static int nl80211_parse_mesh_config(struct genl_info *info,
5778                                      struct mesh_config *cfg,
5779                                      u32 *mask_out)
5780 {
5781         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5782         u32 mask = 0;
5783         u16 ht_opmode;
5784
5785 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5786 do {                                                                        \
5787         if (tb[attr]) {                                                     \
5788                 if (fn(tb[attr], min, max, &cfg->param))                    \
5789                         return -EINVAL;                                     \
5790                 mask |= (1 << (attr - 1));                                  \
5791         }                                                                   \
5792 } while (0)
5793
5794         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5795                 return -EINVAL;
5796         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5797                              info->attrs[NL80211_ATTR_MESH_CONFIG],
5798                              nl80211_meshconf_params_policy))
5799                 return -EINVAL;
5800
5801         /* This makes sure that there aren't more than 32 mesh config
5802          * parameters (otherwise our bitfield scheme would not work.) */
5803         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5804
5805         /* Fill in the params struct */
5806         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5807                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5808                                   nl80211_check_u16);
5809         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5810                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5811                                   nl80211_check_u16);
5812         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5813                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5814                                   nl80211_check_u16);
5815         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5816                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5817                                   nl80211_check_u16);
5818         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5819                                   mask, NL80211_MESHCONF_MAX_RETRIES,
5820                                   nl80211_check_u8);
5821         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5822                                   mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
5823         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5824                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
5825                                   nl80211_check_u8);
5826         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5827                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5828                                   nl80211_check_bool);
5829         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5830                                   1, 255, mask,
5831                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5832                                   nl80211_check_u32);
5833         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5834                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5835                                   nl80211_check_u8);
5836         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5837                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5838                                   nl80211_check_u32);
5839         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5840                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5841                                   nl80211_check_u16);
5842         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5843                                   1, 65535, mask,
5844                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5845                                   nl80211_check_u32);
5846         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5847                                   1, 65535, mask,
5848                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5849                                   nl80211_check_u16);
5850         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5851                                   1, 65535, mask,
5852                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5853                                   nl80211_check_u16);
5854         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5855                                   dot11MeshHWMPnetDiameterTraversalTime,
5856                                   1, 65535, mask,
5857                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5858                                   nl80211_check_u16);
5859         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5860                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5861                                   nl80211_check_u8);
5862         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5863                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5864                                   nl80211_check_u16);
5865         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5866                                   dot11MeshGateAnnouncementProtocol, 0, 1,
5867                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5868                                   nl80211_check_bool);
5869         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5870                                   mask, NL80211_MESHCONF_FORWARDING,
5871                                   nl80211_check_bool);
5872         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5873                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5874                                   nl80211_check_s32);
5875         /*
5876          * Check HT operation mode based on
5877          * IEEE 802.11 2012 8.4.2.59 HT Operation element.
5878          */
5879         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
5880                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
5881
5882                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
5883                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
5884                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5885                         return -EINVAL;
5886
5887                 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) &&
5888                     (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5889                         return -EINVAL;
5890
5891                 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) {
5892                 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
5893                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
5894                         if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)
5895                                 return -EINVAL;
5896                         break;
5897                 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
5898                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
5899                         if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5900                                 return -EINVAL;
5901                         break;
5902                 }
5903                 cfg->ht_opmode = ht_opmode;
5904         }
5905         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5906                                   1, 65535, mask,
5907                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5908                                   nl80211_check_u32);
5909         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5910                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5911                                   nl80211_check_u16);
5912         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5913                                   dot11MeshHWMPconfirmationInterval,
5914                                   1, 65535, mask,
5915                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5916                                   nl80211_check_u16);
5917         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5918                                   NL80211_MESH_POWER_ACTIVE,
5919                                   NL80211_MESH_POWER_MAX,
5920                                   mask, NL80211_MESHCONF_POWER_MODE,
5921                                   nl80211_check_power_mode);
5922         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5923                                   0, 65535, mask,
5924                                   NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
5925         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
5926                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5927                                   nl80211_check_u32);
5928         if (mask_out)
5929                 *mask_out = mask;
5930
5931         return 0;
5932
5933 #undef FILL_IN_MESH_PARAM_IF_SET
5934 }
5935
5936 static int nl80211_parse_mesh_setup(struct genl_info *info,
5937                                      struct mesh_setup *setup)
5938 {
5939         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5940         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5941
5942         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5943                 return -EINVAL;
5944         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5945                              info->attrs[NL80211_ATTR_MESH_SETUP],
5946                              nl80211_mesh_setup_params_policy))
5947                 return -EINVAL;
5948
5949         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5950                 setup->sync_method =
5951                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5952                  IEEE80211_SYNC_METHOD_VENDOR :
5953                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5954
5955         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5956                 setup->path_sel_proto =
5957                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5958                  IEEE80211_PATH_PROTOCOL_VENDOR :
5959                  IEEE80211_PATH_PROTOCOL_HWMP;
5960
5961         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5962                 setup->path_metric =
5963                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5964                  IEEE80211_PATH_METRIC_VENDOR :
5965                  IEEE80211_PATH_METRIC_AIRTIME;
5966
5967         if (tb[NL80211_MESH_SETUP_IE]) {
5968                 struct nlattr *ieattr =
5969                         tb[NL80211_MESH_SETUP_IE];
5970                 if (!is_valid_ie_attr(ieattr))
5971                         return -EINVAL;
5972                 setup->ie = nla_data(ieattr);
5973                 setup->ie_len = nla_len(ieattr);
5974         }
5975         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5976             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5977                 return -EINVAL;
5978         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5979         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5980         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5981         if (setup->is_secure)
5982                 setup->user_mpm = true;
5983
5984         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5985                 if (!setup->user_mpm)
5986                         return -EINVAL;
5987                 setup->auth_id =
5988                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5989         }
5990
5991         return 0;
5992 }
5993
5994 static int nl80211_update_mesh_config(struct sk_buff *skb,
5995                                       struct genl_info *info)
5996 {
5997         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5998         struct net_device *dev = info->user_ptr[1];
5999         struct wireless_dev *wdev = dev->ieee80211_ptr;
6000         struct mesh_config cfg;
6001         u32 mask;
6002         int err;
6003
6004         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6005                 return -EOPNOTSUPP;
6006
6007         if (!rdev->ops->update_mesh_config)
6008                 return -EOPNOTSUPP;
6009
6010         err = nl80211_parse_mesh_config(info, &cfg, &mask);
6011         if (err)
6012                 return err;
6013
6014         wdev_lock(wdev);
6015         if (!wdev->mesh_id_len)
6016                 err = -ENOLINK;
6017
6018         if (!err)
6019                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6020
6021         wdev_unlock(wdev);
6022
6023         return err;
6024 }
6025
6026 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6027                               struct sk_buff *msg)
6028 {
6029         struct nlattr *nl_reg_rules;
6030         unsigned int i;
6031
6032         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6033             (regdom->dfs_region &&
6034              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6035                 goto nla_put_failure;
6036
6037         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6038         if (!nl_reg_rules)
6039                 goto nla_put_failure;
6040
6041         for (i = 0; i < regdom->n_reg_rules; i++) {
6042                 struct nlattr *nl_reg_rule;
6043                 const struct ieee80211_reg_rule *reg_rule;
6044                 const struct ieee80211_freq_range *freq_range;
6045                 const struct ieee80211_power_rule *power_rule;
6046                 unsigned int max_bandwidth_khz;
6047
6048                 reg_rule = &regdom->reg_rules[i];
6049                 freq_range = &reg_rule->freq_range;
6050                 power_rule = &reg_rule->power_rule;
6051
6052                 nl_reg_rule = nla_nest_start(msg, i);
6053                 if (!nl_reg_rule)
6054                         goto nla_put_failure;
6055
6056                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6057                 if (!max_bandwidth_khz)
6058                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6059                                                                   reg_rule);
6060
6061                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6062                                 reg_rule->flags) ||
6063                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6064                                 freq_range->start_freq_khz) ||
6065                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6066                                 freq_range->end_freq_khz) ||
6067                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6068                                 max_bandwidth_khz) ||
6069                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6070                                 power_rule->max_antenna_gain) ||
6071                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6072                                 power_rule->max_eirp) ||
6073                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6074                                 reg_rule->dfs_cac_ms))
6075                         goto nla_put_failure;
6076
6077                 nla_nest_end(msg, nl_reg_rule);
6078         }
6079
6080         nla_nest_end(msg, nl_reg_rules);
6081         return 0;
6082
6083 nla_put_failure:
6084         return -EMSGSIZE;
6085 }
6086
6087 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6088 {
6089         const struct ieee80211_regdomain *regdom = NULL;
6090         struct cfg80211_registered_device *rdev;
6091         struct wiphy *wiphy = NULL;
6092         struct sk_buff *msg;
6093         void *hdr;
6094
6095         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6096         if (!msg)
6097                 return -ENOBUFS;
6098
6099         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6100                              NL80211_CMD_GET_REG);
6101         if (!hdr)
6102                 goto put_failure;
6103
6104         if (info->attrs[NL80211_ATTR_WIPHY]) {
6105                 bool self_managed;
6106
6107                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6108                 if (IS_ERR(rdev)) {
6109                         nlmsg_free(msg);
6110                         return PTR_ERR(rdev);
6111                 }
6112
6113                 wiphy = &rdev->wiphy;
6114                 self_managed = wiphy->regulatory_flags &
6115                                REGULATORY_WIPHY_SELF_MANAGED;
6116                 regdom = get_wiphy_regdom(wiphy);
6117
6118                 /* a self-managed-reg device must have a private regdom */
6119                 if (WARN_ON(!regdom && self_managed)) {
6120                         nlmsg_free(msg);
6121                         return -EINVAL;
6122                 }
6123
6124                 if (regdom &&
6125                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6126                         goto nla_put_failure;
6127         }
6128
6129         if (!wiphy && reg_last_request_cell_base() &&
6130             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6131                         NL80211_USER_REG_HINT_CELL_BASE))
6132                 goto nla_put_failure;
6133
6134         rcu_read_lock();
6135
6136         if (!regdom)
6137                 regdom = rcu_dereference(cfg80211_regdomain);
6138
6139         if (nl80211_put_regdom(regdom, msg))
6140                 goto nla_put_failure_rcu;
6141
6142         rcu_read_unlock();
6143
6144         genlmsg_end(msg, hdr);
6145         return genlmsg_reply(msg, info);
6146
6147 nla_put_failure_rcu:
6148         rcu_read_unlock();
6149 nla_put_failure:
6150         genlmsg_cancel(msg, hdr);
6151 put_failure:
6152         nlmsg_free(msg);
6153         return -EMSGSIZE;
6154 }
6155
6156 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6157                                u32 seq, int flags, struct wiphy *wiphy,
6158                                const struct ieee80211_regdomain *regdom)
6159 {
6160         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6161                                    NL80211_CMD_GET_REG);
6162
6163         if (!hdr)
6164                 return -1;
6165
6166         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6167
6168         if (nl80211_put_regdom(regdom, msg))
6169                 goto nla_put_failure;
6170
6171         if (!wiphy && reg_last_request_cell_base() &&
6172             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6173                         NL80211_USER_REG_HINT_CELL_BASE))
6174                 goto nla_put_failure;
6175
6176         if (wiphy &&
6177             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6178                 goto nla_put_failure;
6179
6180         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6181             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6182                 goto nla_put_failure;
6183
6184         genlmsg_end(msg, hdr);
6185         return 0;
6186
6187 nla_put_failure:
6188         genlmsg_cancel(msg, hdr);
6189         return -EMSGSIZE;
6190 }
6191
6192 static int nl80211_get_reg_dump(struct sk_buff *skb,
6193                                 struct netlink_callback *cb)
6194 {
6195         const struct ieee80211_regdomain *regdom = NULL;
6196         struct cfg80211_registered_device *rdev;
6197         int err, reg_idx, start = cb->args[2];
6198
6199         rtnl_lock();
6200
6201         if (cfg80211_regdomain && start == 0) {
6202                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6203                                           NLM_F_MULTI, NULL,
6204                                           rtnl_dereference(cfg80211_regdomain));
6205                 if (err < 0)
6206                         goto out_err;
6207         }
6208
6209         /* the global regdom is idx 0 */
6210         reg_idx = 1;
6211         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6212                 regdom = get_wiphy_regdom(&rdev->wiphy);
6213                 if (!regdom)
6214                         continue;
6215
6216                 if (++reg_idx <= start)
6217                         continue;
6218
6219                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6220                                           NLM_F_MULTI, &rdev->wiphy, regdom);
6221                 if (err < 0) {
6222                         reg_idx--;
6223                         break;
6224                 }
6225         }
6226
6227         cb->args[2] = reg_idx;
6228         err = skb->len;
6229 out_err:
6230         rtnl_unlock();
6231         return err;
6232 }
6233
6234 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6235 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6236         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
6237         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
6238         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
6239         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
6240         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
6241         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
6242         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
6243 };
6244
6245 static int parse_reg_rule(struct nlattr *tb[],
6246         struct ieee80211_reg_rule *reg_rule)
6247 {
6248         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6249         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6250
6251         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6252                 return -EINVAL;
6253         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6254                 return -EINVAL;
6255         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6256                 return -EINVAL;
6257         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6258                 return -EINVAL;
6259         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6260                 return -EINVAL;
6261
6262         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6263
6264         freq_range->start_freq_khz =
6265                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6266         freq_range->end_freq_khz =
6267                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6268         freq_range->max_bandwidth_khz =
6269                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6270
6271         power_rule->max_eirp =
6272                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6273
6274         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6275                 power_rule->max_antenna_gain =
6276                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6277
6278         if (tb[NL80211_ATTR_DFS_CAC_TIME])
6279                 reg_rule->dfs_cac_ms =
6280                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6281
6282         return 0;
6283 }
6284
6285 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6286 {
6287         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6288         struct nlattr *nl_reg_rule;
6289         char *alpha2;
6290         int rem_reg_rules, r;
6291         u32 num_rules = 0, rule_idx = 0, size_of_regd;
6292         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6293         struct ieee80211_regdomain *rd;
6294
6295         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6296                 return -EINVAL;
6297
6298         if (!info->attrs[NL80211_ATTR_REG_RULES])
6299                 return -EINVAL;
6300
6301         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6302
6303         if (info->attrs[NL80211_ATTR_DFS_REGION])
6304                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6305
6306         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6307                             rem_reg_rules) {
6308                 num_rules++;
6309                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6310                         return -EINVAL;
6311         }
6312
6313         if (!reg_is_valid_request(alpha2))
6314                 return -EINVAL;
6315
6316         size_of_regd = sizeof(struct ieee80211_regdomain) +
6317                        num_rules * sizeof(struct ieee80211_reg_rule);
6318
6319         rd = kzalloc(size_of_regd, GFP_KERNEL);
6320         if (!rd)
6321                 return -ENOMEM;
6322
6323         rd->n_reg_rules = num_rules;
6324         rd->alpha2[0] = alpha2[0];
6325         rd->alpha2[1] = alpha2[1];
6326
6327         /*
6328          * Disable DFS master mode if the DFS region was
6329          * not supported or known on this kernel.
6330          */
6331         if (reg_supported_dfs_region(dfs_region))
6332                 rd->dfs_region = dfs_region;
6333
6334         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6335                             rem_reg_rules) {
6336                 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6337                                      nl_reg_rule, reg_rule_policy);
6338                 if (r)
6339                         goto bad_reg;
6340                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6341                 if (r)
6342                         goto bad_reg;
6343
6344                 rule_idx++;
6345
6346                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6347                         r = -EINVAL;
6348                         goto bad_reg;
6349                 }
6350         }
6351
6352         /* set_regdom takes ownership of rd */
6353         return set_regdom(rd, REGD_SOURCE_CRDA);
6354  bad_reg:
6355         kfree(rd);
6356         return r;
6357 }
6358 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6359
6360 static int validate_scan_freqs(struct nlattr *freqs)
6361 {
6362         struct nlattr *attr1, *attr2;
6363         int n_channels = 0, tmp1, tmp2;
6364
6365         nla_for_each_nested(attr1, freqs, tmp1) {
6366                 n_channels++;
6367                 /*
6368                  * Some hardware has a limited channel list for
6369                  * scanning, and it is pretty much nonsensical
6370                  * to scan for a channel twice, so disallow that
6371                  * and don't require drivers to check that the
6372                  * channel list they get isn't longer than what
6373                  * they can scan, as long as they can scan all
6374                  * the channels they registered at once.
6375                  */
6376                 nla_for_each_nested(attr2, freqs, tmp2)
6377                         if (attr1 != attr2 &&
6378                             nla_get_u32(attr1) == nla_get_u32(attr2))
6379                                 return 0;
6380         }
6381
6382         return n_channels;
6383 }
6384
6385 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6386 {
6387         return b < NUM_NL80211_BANDS && wiphy->bands[b];
6388 }
6389
6390 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6391                             struct cfg80211_bss_selection *bss_select)
6392 {
6393         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6394         struct nlattr *nest;
6395         int err;
6396         bool found = false;
6397         int i;
6398
6399         /* only process one nested attribute */
6400         nest = nla_data(nla);
6401         if (!nla_ok(nest, nla_len(nest)))
6402                 return -EINVAL;
6403
6404         err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6405                                nl80211_bss_select_policy);
6406         if (err)
6407                 return err;
6408
6409         /* only one attribute may be given */
6410         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6411                 if (attr[i]) {
6412                         if (found)
6413                                 return -EINVAL;
6414                         found = true;
6415                 }
6416         }
6417
6418         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6419
6420         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6421                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6422
6423         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6424                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6425                 bss_select->param.band_pref =
6426                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6427                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6428                         return -EINVAL;
6429         }
6430
6431         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6432                 struct nl80211_bss_select_rssi_adjust *adj_param;
6433
6434                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6435                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6436                 bss_select->param.adjust.band = adj_param->band;
6437                 bss_select->param.adjust.delta = adj_param->delta;
6438                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6439                         return -EINVAL;
6440         }
6441
6442         /* user-space did not provide behaviour attribute */
6443         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6444                 return -EINVAL;
6445
6446         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6447                 return -EINVAL;
6448
6449         return 0;
6450 }
6451
6452 static int nl80211_parse_random_mac(struct nlattr **attrs,
6453                                     u8 *mac_addr, u8 *mac_addr_mask)
6454 {
6455         int i;
6456
6457         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6458                 eth_zero_addr(mac_addr);
6459                 eth_zero_addr(mac_addr_mask);
6460                 mac_addr[0] = 0x2;
6461                 mac_addr_mask[0] = 0x3;
6462
6463                 return 0;
6464         }
6465
6466         /* need both or none */
6467         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6468                 return -EINVAL;
6469
6470         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6471         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6472
6473         /* don't allow or configure an mcast address */
6474         if (!is_multicast_ether_addr(mac_addr_mask) ||
6475             is_multicast_ether_addr(mac_addr))
6476                 return -EINVAL;
6477
6478         /*
6479          * allow users to pass a MAC address that has bits set outside
6480          * of the mask, but don't bother drivers with having to deal
6481          * with such bits
6482          */
6483         for (i = 0; i < ETH_ALEN; i++)
6484                 mac_addr[i] &= mac_addr_mask[i];
6485
6486         return 0;
6487 }
6488
6489 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6490 {
6491         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6492         struct wireless_dev *wdev = info->user_ptr[1];
6493         struct cfg80211_scan_request *request;
6494         struct nlattr *attr;
6495         struct wiphy *wiphy;
6496         int err, tmp, n_ssids = 0, n_channels, i;
6497         size_t ie_len;
6498
6499         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6500                 return -EINVAL;
6501
6502         wiphy = &rdev->wiphy;
6503
6504         if (wdev->iftype == NL80211_IFTYPE_NAN)
6505                 return -EOPNOTSUPP;
6506
6507         if (!rdev->ops->scan)
6508                 return -EOPNOTSUPP;
6509
6510         if (rdev->scan_req || rdev->scan_msg) {
6511                 err = -EBUSY;
6512                 goto unlock;
6513         }
6514
6515         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6516                 n_channels = validate_scan_freqs(
6517                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6518                 if (!n_channels) {
6519                         err = -EINVAL;
6520                         goto unlock;
6521                 }
6522         } else {
6523                 n_channels = ieee80211_get_num_supported_channels(wiphy);
6524         }
6525
6526         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6527                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6528                         n_ssids++;
6529
6530         if (n_ssids > wiphy->max_scan_ssids) {
6531                 err = -EINVAL;
6532                 goto unlock;
6533         }
6534
6535         if (info->attrs[NL80211_ATTR_IE])
6536                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6537         else
6538                 ie_len = 0;
6539
6540         if (ie_len > wiphy->max_scan_ie_len) {
6541                 err = -EINVAL;
6542                 goto unlock;
6543         }
6544
6545         request = kzalloc(sizeof(*request)
6546                         + sizeof(*request->ssids) * n_ssids
6547                         + sizeof(*request->channels) * n_channels
6548                         + ie_len, GFP_KERNEL);
6549         if (!request) {
6550                 err = -ENOMEM;
6551                 goto unlock;
6552         }
6553
6554         if (n_ssids)
6555                 request->ssids = (void *)&request->channels[n_channels];
6556         request->n_ssids = n_ssids;
6557         if (ie_len) {
6558                 if (n_ssids)
6559                         request->ie = (void *)(request->ssids + n_ssids);
6560                 else
6561                         request->ie = (void *)(request->channels + n_channels);
6562         }
6563
6564         i = 0;
6565         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6566                 /* user specified, bail out if channel not found */
6567                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6568                         struct ieee80211_channel *chan;
6569
6570                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6571
6572                         if (!chan) {
6573                                 err = -EINVAL;
6574                                 goto out_free;
6575                         }
6576
6577                         /* ignore disabled channels */
6578                         if (chan->flags & IEEE80211_CHAN_DISABLED)
6579                                 continue;
6580
6581                         request->channels[i] = chan;
6582                         i++;
6583                 }
6584         } else {
6585                 enum nl80211_band band;
6586
6587                 /* all channels */
6588                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6589                         int j;
6590
6591                         if (!wiphy->bands[band])
6592                                 continue;
6593                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6594                                 struct ieee80211_channel *chan;
6595
6596                                 chan = &wiphy->bands[band]->channels[j];
6597
6598                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
6599                                         continue;
6600
6601                                 request->channels[i] = chan;
6602                                 i++;
6603                         }
6604                 }
6605         }
6606
6607         if (!i) {
6608                 err = -EINVAL;
6609                 goto out_free;
6610         }
6611
6612         request->n_channels = i;
6613
6614         i = 0;
6615         if (n_ssids) {
6616                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6617                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6618                                 err = -EINVAL;
6619                                 goto out_free;
6620                         }
6621                         request->ssids[i].ssid_len = nla_len(attr);
6622                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6623                         i++;
6624                 }
6625         }
6626
6627         if (info->attrs[NL80211_ATTR_IE]) {
6628                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6629                 memcpy((void *)request->ie,
6630                        nla_data(info->attrs[NL80211_ATTR_IE]),
6631                        request->ie_len);
6632         }
6633
6634         for (i = 0; i < NUM_NL80211_BANDS; i++)
6635                 if (wiphy->bands[i])
6636                         request->rates[i] =
6637                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
6638
6639         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6640                 nla_for_each_nested(attr,
6641                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6642                                     tmp) {
6643                         enum nl80211_band band = nla_type(attr);
6644
6645                         if (band < 0 || band >= NUM_NL80211_BANDS) {
6646                                 err = -EINVAL;
6647                                 goto out_free;
6648                         }
6649
6650                         if (!wiphy->bands[band])
6651                                 continue;
6652
6653                         err = ieee80211_get_ratemask(wiphy->bands[band],
6654                                                      nla_data(attr),
6655                                                      nla_len(attr),
6656                                                      &request->rates[band]);
6657                         if (err)
6658                                 goto out_free;
6659                 }
6660         }
6661
6662         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6663                 if (!wiphy_ext_feature_isset(wiphy,
6664                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6665                         err = -EOPNOTSUPP;
6666                         goto out_free;
6667                 }
6668
6669                 request->duration =
6670                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6671                 request->duration_mandatory =
6672                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6673         }
6674
6675         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
6676                 request->flags = nla_get_u32(
6677                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
6678                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6679                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6680                         err = -EOPNOTSUPP;
6681                         goto out_free;
6682                 }
6683
6684                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6685                         if (!(wiphy->features &
6686                                         NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
6687                                 err = -EOPNOTSUPP;
6688                                 goto out_free;
6689                         }
6690
6691                         if (wdev->current_bss) {
6692                                 err = -EOPNOTSUPP;
6693                                 goto out_free;
6694                         }
6695
6696                         err = nl80211_parse_random_mac(info->attrs,
6697                                                        request->mac_addr,
6698                                                        request->mac_addr_mask);
6699                         if (err)
6700                                 goto out_free;
6701                 }
6702         }
6703
6704         request->no_cck =
6705                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6706
6707         /* Initial implementation used NL80211_ATTR_MAC to set the specific
6708          * BSSID to scan for. This was problematic because that same attribute
6709          * was already used for another purpose (local random MAC address). The
6710          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
6711          * compatibility with older userspace components, also use the
6712          * NL80211_ATTR_MAC value here if it can be determined to be used for
6713          * the specific BSSID use case instead of the random MAC address
6714          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
6715          */
6716         if (info->attrs[NL80211_ATTR_BSSID])
6717                 memcpy(request->bssid,
6718                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
6719         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
6720                  info->attrs[NL80211_ATTR_MAC])
6721                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6722                        ETH_ALEN);
6723         else
6724                 eth_broadcast_addr(request->bssid);
6725
6726         request->wdev = wdev;
6727         request->wiphy = &rdev->wiphy;
6728         request->scan_start = jiffies;
6729
6730         rdev->scan_req = request;
6731         err = rdev_scan(rdev, request);
6732
6733         if (!err) {
6734                 nl80211_send_scan_start(rdev, wdev);
6735                 if (wdev->netdev)
6736                         dev_hold(wdev->netdev);
6737         } else {
6738  out_free:
6739                 rdev->scan_req = NULL;
6740                 kfree(request);
6741         }
6742
6743  unlock:
6744         return err;
6745 }
6746
6747 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6748 {
6749         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6750         struct wireless_dev *wdev = info->user_ptr[1];
6751
6752         if (!rdev->ops->abort_scan)
6753                 return -EOPNOTSUPP;
6754
6755         if (rdev->scan_msg)
6756                 return 0;
6757
6758         if (!rdev->scan_req)
6759                 return -ENOENT;
6760
6761         rdev_abort_scan(rdev, wdev);
6762         return 0;
6763 }
6764
6765 static int
6766 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6767                                struct cfg80211_sched_scan_request *request,
6768                                struct nlattr **attrs)
6769 {
6770         int tmp, err, i = 0;
6771         struct nlattr *attr;
6772
6773         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6774                 u32 interval;
6775
6776                 /*
6777                  * If scan plans are not specified,
6778                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL must be specified. In this
6779                  * case one scan plan will be set with the specified scan
6780                  * interval and infinite number of iterations.
6781                  */
6782                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6783                         return -EINVAL;
6784
6785                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
6786                 if (!interval)
6787                         return -EINVAL;
6788
6789                 request->scan_plans[0].interval =
6790                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
6791                 if (!request->scan_plans[0].interval)
6792                         return -EINVAL;
6793
6794                 if (request->scan_plans[0].interval >
6795                     wiphy->max_sched_scan_plan_interval)
6796                         request->scan_plans[0].interval =
6797                                 wiphy->max_sched_scan_plan_interval;
6798
6799                 return 0;
6800         }
6801
6802         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
6803                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
6804
6805                 if (WARN_ON(i >= n_plans))
6806                         return -EINVAL;
6807
6808                 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
6809                                        attr, nl80211_plan_policy);
6810                 if (err)
6811                         return err;
6812
6813                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
6814                         return -EINVAL;
6815
6816                 request->scan_plans[i].interval =
6817                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
6818                 if (!request->scan_plans[i].interval ||
6819                     request->scan_plans[i].interval >
6820                     wiphy->max_sched_scan_plan_interval)
6821                         return -EINVAL;
6822
6823                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
6824                         request->scan_plans[i].iterations =
6825                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
6826                         if (!request->scan_plans[i].iterations ||
6827                             (request->scan_plans[i].iterations >
6828                              wiphy->max_sched_scan_plan_iterations))
6829                                 return -EINVAL;
6830                 } else if (i < n_plans - 1) {
6831                         /*
6832                          * All scan plans but the last one must specify
6833                          * a finite number of iterations
6834                          */
6835                         return -EINVAL;
6836                 }
6837
6838                 i++;
6839         }
6840
6841         /*
6842          * The last scan plan must not specify the number of
6843          * iterations, it is supposed to run infinitely
6844          */
6845         if (request->scan_plans[n_plans - 1].iterations)
6846                 return  -EINVAL;
6847
6848         return 0;
6849 }
6850
6851 static struct cfg80211_sched_scan_request *
6852 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
6853                          struct nlattr **attrs)
6854 {
6855         struct cfg80211_sched_scan_request *request;
6856         struct nlattr *attr;
6857         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
6858         enum nl80211_band band;
6859         size_t ie_len;
6860         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
6861         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
6862
6863         if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
6864                 return ERR_PTR(-EINVAL);
6865
6866         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6867                 n_channels = validate_scan_freqs(
6868                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6869                 if (!n_channels)
6870                         return ERR_PTR(-EINVAL);
6871         } else {
6872                 n_channels = ieee80211_get_num_supported_channels(wiphy);
6873         }
6874
6875         if (attrs[NL80211_ATTR_SCAN_SSIDS])
6876                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6877                                     tmp)
6878                         n_ssids++;
6879
6880         if (n_ssids > wiphy->max_sched_scan_ssids)
6881                 return ERR_PTR(-EINVAL);
6882
6883         /*
6884          * First, count the number of 'real' matchsets. Due to an issue with
6885          * the old implementation, matchsets containing only the RSSI attribute
6886          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6887          * RSSI for all matchsets, rather than their own matchset for reporting
6888          * all APs with a strong RSSI. This is needed to be compatible with
6889          * older userspace that treated a matchset with only the RSSI as the
6890          * global RSSI for all other matchsets - if there are other matchsets.
6891          */
6892         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6893                 nla_for_each_nested(attr,
6894                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6895                                     tmp) {
6896                         struct nlattr *rssi;
6897
6898                         err = nla_parse_nested(tb,
6899                                                NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6900                                                attr, nl80211_match_policy);
6901                         if (err)
6902                                 return ERR_PTR(err);
6903                         /* add other standalone attributes here */
6904                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6905                                 n_match_sets++;
6906                                 continue;
6907                         }
6908                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6909                         if (rssi)
6910                                 default_match_rssi = nla_get_s32(rssi);
6911                 }
6912         }
6913
6914         /* However, if there's no other matchset, add the RSSI one */
6915         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6916                 n_match_sets = 1;
6917
6918         if (n_match_sets > wiphy->max_match_sets)
6919                 return ERR_PTR(-EINVAL);
6920
6921         if (attrs[NL80211_ATTR_IE])
6922                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6923         else
6924                 ie_len = 0;
6925
6926         if (ie_len > wiphy->max_sched_scan_ie_len)
6927                 return ERR_PTR(-EINVAL);
6928
6929         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6930                 /*
6931                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
6932                  * each scan plan already specifies its own interval
6933                  */
6934                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6935                         return ERR_PTR(-EINVAL);
6936
6937                 nla_for_each_nested(attr,
6938                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
6939                         n_plans++;
6940         } else {
6941                 /*
6942                  * The scan interval attribute is kept for backward
6943                  * compatibility. If no scan plans are specified and sched scan
6944                  * interval is specified, one scan plan will be set with this
6945                  * scan interval and infinite number of iterations.
6946                  */
6947                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6948                         return ERR_PTR(-EINVAL);
6949
6950                 n_plans = 1;
6951         }
6952
6953         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
6954                 return ERR_PTR(-EINVAL);
6955
6956         request = kzalloc(sizeof(*request)
6957                         + sizeof(*request->ssids) * n_ssids
6958                         + sizeof(*request->match_sets) * n_match_sets
6959                         + sizeof(*request->scan_plans) * n_plans
6960                         + sizeof(*request->channels) * n_channels
6961                         + ie_len, GFP_KERNEL);
6962         if (!request)
6963                 return ERR_PTR(-ENOMEM);
6964
6965         if (n_ssids)
6966                 request->ssids = (void *)&request->channels[n_channels];
6967         request->n_ssids = n_ssids;
6968         if (ie_len) {
6969                 if (n_ssids)
6970                         request->ie = (void *)(request->ssids + n_ssids);
6971                 else
6972                         request->ie = (void *)(request->channels + n_channels);
6973         }
6974
6975         if (n_match_sets) {
6976                 if (request->ie)
6977                         request->match_sets = (void *)(request->ie + ie_len);
6978                 else if (n_ssids)
6979                         request->match_sets =
6980                                 (void *)(request->ssids + n_ssids);
6981                 else
6982                         request->match_sets =
6983                                 (void *)(request->channels + n_channels);
6984         }
6985         request->n_match_sets = n_match_sets;
6986
6987         if (n_match_sets)
6988                 request->scan_plans = (void *)(request->match_sets +
6989                                                n_match_sets);
6990         else if (request->ie)
6991                 request->scan_plans = (void *)(request->ie + ie_len);
6992         else if (n_ssids)
6993                 request->scan_plans = (void *)(request->ssids + n_ssids);
6994         else
6995                 request->scan_plans = (void *)(request->channels + n_channels);
6996
6997         request->n_scan_plans = n_plans;
6998
6999         i = 0;
7000         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7001                 /* user specified, bail out if channel not found */
7002                 nla_for_each_nested(attr,
7003                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7004                                     tmp) {
7005                         struct ieee80211_channel *chan;
7006
7007                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7008
7009                         if (!chan) {
7010                                 err = -EINVAL;
7011                                 goto out_free;
7012                         }
7013
7014                         /* ignore disabled channels */
7015                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7016                                 continue;
7017
7018                         request->channels[i] = chan;
7019                         i++;
7020                 }
7021         } else {
7022                 /* all channels */
7023                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7024                         int j;
7025
7026                         if (!wiphy->bands[band])
7027                                 continue;
7028                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7029                                 struct ieee80211_channel *chan;
7030
7031                                 chan = &wiphy->bands[band]->channels[j];
7032
7033                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7034                                         continue;
7035
7036                                 request->channels[i] = chan;
7037                                 i++;
7038                         }
7039                 }
7040         }
7041
7042         if (!i) {
7043                 err = -EINVAL;
7044                 goto out_free;
7045         }
7046
7047         request->n_channels = i;
7048
7049         i = 0;
7050         if (n_ssids) {
7051                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7052                                     tmp) {
7053                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7054                                 err = -EINVAL;
7055                                 goto out_free;
7056                         }
7057                         request->ssids[i].ssid_len = nla_len(attr);
7058                         memcpy(request->ssids[i].ssid, nla_data(attr),
7059                                nla_len(attr));
7060                         i++;
7061                 }
7062         }
7063
7064         i = 0;
7065         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7066                 nla_for_each_nested(attr,
7067                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7068                                     tmp) {
7069                         struct nlattr *ssid, *rssi;
7070
7071                         err = nla_parse_nested(tb,
7072                                                NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7073                                                attr, nl80211_match_policy);
7074                         if (err)
7075                                 goto out_free;
7076                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7077                         if (ssid) {
7078                                 if (WARN_ON(i >= n_match_sets)) {
7079                                         /* this indicates a programming error,
7080                                          * the loop above should have verified
7081                                          * things properly
7082                                          */
7083                                         err = -EINVAL;
7084                                         goto out_free;
7085                                 }
7086
7087                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7088                                         err = -EINVAL;
7089                                         goto out_free;
7090                                 }
7091                                 memcpy(request->match_sets[i].ssid.ssid,
7092                                        nla_data(ssid), nla_len(ssid));
7093                                 request->match_sets[i].ssid.ssid_len =
7094                                         nla_len(ssid);
7095                                 /* special attribute - old implementation w/a */
7096                                 request->match_sets[i].rssi_thold =
7097                                         default_match_rssi;
7098                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7099                                 if (rssi)
7100                                         request->match_sets[i].rssi_thold =
7101                                                 nla_get_s32(rssi);
7102                         }
7103                         i++;
7104                 }
7105
7106                 /* there was no other matchset, so the RSSI one is alone */
7107                 if (i == 0 && n_match_sets)
7108                         request->match_sets[0].rssi_thold = default_match_rssi;
7109
7110                 request->min_rssi_thold = INT_MAX;
7111                 for (i = 0; i < n_match_sets; i++)
7112                         request->min_rssi_thold =
7113                                 min(request->match_sets[i].rssi_thold,
7114                                     request->min_rssi_thold);
7115         } else {
7116                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7117         }
7118
7119         if (ie_len) {
7120                 request->ie_len = ie_len;
7121                 memcpy((void *)request->ie,
7122                        nla_data(attrs[NL80211_ATTR_IE]),
7123                        request->ie_len);
7124         }
7125
7126         if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
7127                 request->flags = nla_get_u32(
7128                         attrs[NL80211_ATTR_SCAN_FLAGS]);
7129                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7130                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
7131                         err = -EOPNOTSUPP;
7132                         goto out_free;
7133                 }
7134
7135                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7136                         u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
7137
7138                         if (!wdev) /* must be net-detect */
7139                                 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7140
7141                         if (!(wiphy->features & flg)) {
7142                                 err = -EOPNOTSUPP;
7143                                 goto out_free;
7144                         }
7145
7146                         if (wdev && wdev->current_bss) {
7147                                 err = -EOPNOTSUPP;
7148                                 goto out_free;
7149                         }
7150
7151                         err = nl80211_parse_random_mac(attrs, request->mac_addr,
7152                                                        request->mac_addr_mask);
7153                         if (err)
7154                                 goto out_free;
7155                 }
7156         }
7157
7158         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7159                 request->delay =
7160                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7161
7162         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7163         if (err)
7164                 goto out_free;
7165
7166         request->scan_start = jiffies;
7167
7168         return request;
7169
7170 out_free:
7171         kfree(request);
7172         return ERR_PTR(err);
7173 }
7174
7175 static int nl80211_start_sched_scan(struct sk_buff *skb,
7176                                     struct genl_info *info)
7177 {
7178         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7179         struct net_device *dev = info->user_ptr[1];
7180         struct wireless_dev *wdev = dev->ieee80211_ptr;
7181         struct cfg80211_sched_scan_request *sched_scan_req;
7182         int err;
7183
7184         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
7185             !rdev->ops->sched_scan_start)
7186                 return -EOPNOTSUPP;
7187
7188         if (rdev->sched_scan_req)
7189                 return -EINPROGRESS;
7190
7191         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7192                                                   info->attrs);
7193
7194         err = PTR_ERR_OR_ZERO(sched_scan_req);
7195         if (err)
7196                 goto out_err;
7197
7198         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7199         if (err)
7200                 goto out_free;
7201
7202         sched_scan_req->dev = dev;
7203         sched_scan_req->wiphy = &rdev->wiphy;
7204
7205         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7206                 sched_scan_req->owner_nlportid = info->snd_portid;
7207
7208         rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
7209
7210         nl80211_send_sched_scan(rdev, dev,
7211                                 NL80211_CMD_START_SCHED_SCAN);
7212         return 0;
7213
7214 out_free:
7215         kfree(sched_scan_req);
7216 out_err:
7217         return err;
7218 }
7219
7220 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7221                                    struct genl_info *info)
7222 {
7223         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7224
7225         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
7226             !rdev->ops->sched_scan_stop)
7227                 return -EOPNOTSUPP;
7228
7229         return __cfg80211_stop_sched_scan(rdev, false);
7230 }
7231
7232 static int nl80211_start_radar_detection(struct sk_buff *skb,
7233                                          struct genl_info *info)
7234 {
7235         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7236         struct net_device *dev = info->user_ptr[1];
7237         struct wireless_dev *wdev = dev->ieee80211_ptr;
7238         struct cfg80211_chan_def chandef;
7239         enum nl80211_dfs_regions dfs_region;
7240         unsigned int cac_time_ms;
7241         int err;
7242
7243         dfs_region = reg_get_dfs_region(wdev->wiphy);
7244         if (dfs_region == NL80211_DFS_UNSET)
7245                 return -EINVAL;
7246
7247         err = nl80211_parse_chandef(rdev, info, &chandef);
7248         if (err)
7249                 return err;
7250
7251         if (netif_carrier_ok(dev))
7252                 return -EBUSY;
7253
7254         if (wdev->cac_started)
7255                 return -EBUSY;
7256
7257         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
7258                                             wdev->iftype);
7259         if (err < 0)
7260                 return err;
7261
7262         if (err == 0)
7263                 return -EINVAL;
7264
7265         if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
7266                 return -EINVAL;
7267
7268         if (!rdev->ops->start_radar_detection)
7269                 return -EOPNOTSUPP;
7270
7271         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7272         if (WARN_ON(!cac_time_ms))
7273                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7274
7275         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7276         if (!err) {
7277                 wdev->chandef = chandef;
7278                 wdev->cac_started = true;
7279                 wdev->cac_start_time = jiffies;
7280                 wdev->cac_time_ms = cac_time_ms;
7281         }
7282         return err;
7283 }
7284
7285 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7286 {
7287         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7288         struct net_device *dev = info->user_ptr[1];
7289         struct wireless_dev *wdev = dev->ieee80211_ptr;
7290         struct cfg80211_csa_settings params;
7291         /* csa_attrs is defined static to avoid waste of stack size - this
7292          * function is called under RTNL lock, so this should not be a problem.
7293          */
7294         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7295         int err;
7296         bool need_new_beacon = false;
7297         int len, i;
7298         u32 cs_count;
7299
7300         if (!rdev->ops->channel_switch ||
7301             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7302                 return -EOPNOTSUPP;
7303
7304         switch (dev->ieee80211_ptr->iftype) {
7305         case NL80211_IFTYPE_AP:
7306         case NL80211_IFTYPE_P2P_GO:
7307                 need_new_beacon = true;
7308
7309                 /* useless if AP is not running */
7310                 if (!wdev->beacon_interval)
7311                         return -ENOTCONN;
7312                 break;
7313         case NL80211_IFTYPE_ADHOC:
7314                 if (!wdev->ssid_len)
7315                         return -ENOTCONN;
7316                 break;
7317         case NL80211_IFTYPE_MESH_POINT:
7318                 if (!wdev->mesh_id_len)
7319                         return -ENOTCONN;
7320                 break;
7321         default:
7322                 return -EOPNOTSUPP;
7323         }
7324
7325         memset(&params, 0, sizeof(params));
7326
7327         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7328             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7329                 return -EINVAL;
7330
7331         /* only important for AP, IBSS and mesh create IEs internally */
7332         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7333                 return -EINVAL;
7334
7335         /* Even though the attribute is u32, the specification says
7336          * u8, so let's make sure we don't overflow.
7337          */
7338         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7339         if (cs_count > 255)
7340                 return -EINVAL;
7341
7342         params.count = cs_count;
7343
7344         if (!need_new_beacon)
7345                 goto skip_beacons;
7346
7347         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7348         if (err)
7349                 return err;
7350
7351         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7352                                info->attrs[NL80211_ATTR_CSA_IES],
7353                                nl80211_policy);
7354         if (err)
7355                 return err;
7356
7357         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7358         if (err)
7359                 return err;
7360
7361         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7362                 return -EINVAL;
7363
7364         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7365         if (!len || (len % sizeof(u16)))
7366                 return -EINVAL;
7367
7368         params.n_counter_offsets_beacon = len / sizeof(u16);
7369         if (rdev->wiphy.max_num_csa_counters &&
7370             (params.n_counter_offsets_beacon >
7371              rdev->wiphy.max_num_csa_counters))
7372                 return -EINVAL;
7373
7374         params.counter_offsets_beacon =
7375                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7376
7377         /* sanity checks - counters should fit and be the same */
7378         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7379                 u16 offset = params.counter_offsets_beacon[i];
7380
7381                 if (offset >= params.beacon_csa.tail_len)
7382                         return -EINVAL;
7383
7384                 if (params.beacon_csa.tail[offset] != params.count)
7385                         return -EINVAL;
7386         }
7387
7388         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7389                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7390                 if (!len || (len % sizeof(u16)))
7391                         return -EINVAL;
7392
7393                 params.n_counter_offsets_presp = len / sizeof(u16);
7394                 if (rdev->wiphy.max_num_csa_counters &&
7395                     (params.n_counter_offsets_presp >
7396                      rdev->wiphy.max_num_csa_counters))
7397                         return -EINVAL;
7398
7399                 params.counter_offsets_presp =
7400                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7401
7402                 /* sanity checks - counters should fit and be the same */
7403                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7404                         u16 offset = params.counter_offsets_presp[i];
7405
7406                         if (offset >= params.beacon_csa.probe_resp_len)
7407                                 return -EINVAL;
7408
7409                         if (params.beacon_csa.probe_resp[offset] !=
7410                             params.count)
7411                                 return -EINVAL;
7412                 }
7413         }
7414
7415 skip_beacons:
7416         err = nl80211_parse_chandef(rdev, info, &params.chandef);
7417         if (err)
7418                 return err;
7419
7420         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7421                                            wdev->iftype))
7422                 return -EINVAL;
7423
7424         err = cfg80211_chandef_dfs_required(wdev->wiphy,
7425                                             &params.chandef,
7426                                             wdev->iftype);
7427         if (err < 0)
7428                 return err;
7429
7430         if (err > 0)
7431                 params.radar_required = true;
7432
7433         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7434                 params.block_tx = true;
7435
7436         wdev_lock(wdev);
7437         err = rdev_channel_switch(rdev, dev, &params);
7438         wdev_unlock(wdev);
7439
7440         return err;
7441 }
7442
7443 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7444                             u32 seq, int flags,
7445                             struct cfg80211_registered_device *rdev,
7446                             struct wireless_dev *wdev,
7447                             struct cfg80211_internal_bss *intbss)
7448 {
7449         struct cfg80211_bss *res = &intbss->pub;
7450         const struct cfg80211_bss_ies *ies;
7451         void *hdr;
7452         struct nlattr *bss;
7453
7454         ASSERT_WDEV_LOCK(wdev);
7455
7456         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7457                              NL80211_CMD_NEW_SCAN_RESULTS);
7458         if (!hdr)
7459                 return -1;
7460
7461         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
7462
7463         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7464                 goto nla_put_failure;
7465         if (wdev->netdev &&
7466             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7467                 goto nla_put_failure;
7468         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7469                               NL80211_ATTR_PAD))
7470                 goto nla_put_failure;
7471
7472         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7473         if (!bss)
7474                 goto nla_put_failure;
7475         if ((!is_zero_ether_addr(res->bssid) &&
7476              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7477                 goto nla_put_failure;
7478
7479         rcu_read_lock();
7480         /* indicate whether we have probe response data or not */
7481         if (rcu_access_pointer(res->proberesp_ies) &&
7482             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7483                 goto fail_unlock_rcu;
7484
7485         /* this pointer prefers to be pointed to probe response data
7486          * but is always valid
7487          */
7488         ies = rcu_dereference(res->ies);
7489         if (ies) {
7490                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7491                                       NL80211_BSS_PAD))
7492                         goto fail_unlock_rcu;
7493                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7494                                         ies->len, ies->data))
7495                         goto fail_unlock_rcu;
7496         }
7497
7498         /* and this pointer is always (unless driver didn't know) beacon data */
7499         ies = rcu_dereference(res->beacon_ies);
7500         if (ies && ies->from_beacon) {
7501                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7502                                       NL80211_BSS_PAD))
7503                         goto fail_unlock_rcu;
7504                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7505                                         ies->len, ies->data))
7506                         goto fail_unlock_rcu;
7507         }
7508         rcu_read_unlock();
7509
7510         if (res->beacon_interval &&
7511             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7512                 goto nla_put_failure;
7513         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7514             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7515             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7516             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7517                         jiffies_to_msecs(jiffies - intbss->ts)))
7518                 goto nla_put_failure;
7519
7520         if (intbss->parent_tsf &&
7521             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7522                                intbss->parent_tsf, NL80211_BSS_PAD) ||
7523              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7524                      intbss->parent_bssid)))
7525                 goto nla_put_failure;
7526
7527         if (intbss->ts_boottime &&
7528             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7529                               intbss->ts_boottime, NL80211_BSS_PAD))
7530                 goto nla_put_failure;
7531
7532         switch (rdev->wiphy.signal_type) {
7533         case CFG80211_SIGNAL_TYPE_MBM:
7534                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7535                         goto nla_put_failure;
7536                 break;
7537         case CFG80211_SIGNAL_TYPE_UNSPEC:
7538                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7539                         goto nla_put_failure;
7540                 break;
7541         default:
7542                 break;
7543         }
7544
7545         switch (wdev->iftype) {
7546         case NL80211_IFTYPE_P2P_CLIENT:
7547         case NL80211_IFTYPE_STATION:
7548                 if (intbss == wdev->current_bss &&
7549                     nla_put_u32(msg, NL80211_BSS_STATUS,
7550                                 NL80211_BSS_STATUS_ASSOCIATED))
7551                         goto nla_put_failure;
7552                 break;
7553         case NL80211_IFTYPE_ADHOC:
7554                 if (intbss == wdev->current_bss &&
7555                     nla_put_u32(msg, NL80211_BSS_STATUS,
7556                                 NL80211_BSS_STATUS_IBSS_JOINED))
7557                         goto nla_put_failure;
7558                 break;
7559         default:
7560                 break;
7561         }
7562
7563         nla_nest_end(msg, bss);
7564
7565         genlmsg_end(msg, hdr);
7566         return 0;
7567
7568  fail_unlock_rcu:
7569         rcu_read_unlock();
7570  nla_put_failure:
7571         genlmsg_cancel(msg, hdr);
7572         return -EMSGSIZE;
7573 }
7574
7575 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7576 {
7577         struct cfg80211_registered_device *rdev;
7578         struct cfg80211_internal_bss *scan;
7579         struct wireless_dev *wdev;
7580         int start = cb->args[2], idx = 0;
7581         int err;
7582
7583         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7584         if (err)
7585                 return err;
7586
7587         wdev_lock(wdev);
7588         spin_lock_bh(&rdev->bss_lock);
7589         cfg80211_bss_expire(rdev);
7590
7591         cb->seq = rdev->bss_generation;
7592
7593         list_for_each_entry(scan, &rdev->bss_list, list) {
7594                 if (++idx <= start)
7595                         continue;
7596                 if (nl80211_send_bss(skb, cb,
7597                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7598                                 rdev, wdev, scan) < 0) {
7599                         idx--;
7600                         break;
7601                 }
7602         }
7603
7604         spin_unlock_bh(&rdev->bss_lock);
7605         wdev_unlock(wdev);
7606
7607         cb->args[2] = idx;
7608         nl80211_finish_wdev_dump(rdev);
7609
7610         return skb->len;
7611 }
7612
7613 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7614                                int flags, struct net_device *dev,
7615                                bool allow_radio_stats,
7616                                struct survey_info *survey)
7617 {
7618         void *hdr;
7619         struct nlattr *infoattr;
7620
7621         /* skip radio stats if userspace didn't request them */
7622         if (!survey->channel && !allow_radio_stats)
7623                 return 0;
7624
7625         hdr = nl80211hdr_put(msg, portid, seq, flags,
7626                              NL80211_CMD_NEW_SURVEY_RESULTS);
7627         if (!hdr)
7628                 return -ENOMEM;
7629
7630         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7631                 goto nla_put_failure;
7632
7633         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7634         if (!infoattr)
7635                 goto nla_put_failure;
7636
7637         if (survey->channel &&
7638             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7639                         survey->channel->center_freq))
7640                 goto nla_put_failure;
7641
7642         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7643             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7644                 goto nla_put_failure;
7645         if ((survey->filled & SURVEY_INFO_IN_USE) &&
7646             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7647                 goto nla_put_failure;
7648         if ((survey->filled & SURVEY_INFO_TIME) &&
7649             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7650                         survey->time, NL80211_SURVEY_INFO_PAD))
7651                 goto nla_put_failure;
7652         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7653             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7654                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
7655                 goto nla_put_failure;
7656         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7657             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7658                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7659                 goto nla_put_failure;
7660         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7661             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7662                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
7663                 goto nla_put_failure;
7664         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7665             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7666                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
7667                 goto nla_put_failure;
7668         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7669             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7670                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
7671                 goto nla_put_failure;
7672
7673         nla_nest_end(msg, infoattr);
7674
7675         genlmsg_end(msg, hdr);
7676         return 0;
7677
7678  nla_put_failure:
7679         genlmsg_cancel(msg, hdr);
7680         return -EMSGSIZE;
7681 }
7682
7683 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7684 {
7685         struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
7686         struct survey_info survey;
7687         struct cfg80211_registered_device *rdev;
7688         struct wireless_dev *wdev;
7689         int survey_idx = cb->args[2];
7690         int res;
7691         bool radio_stats;
7692
7693         res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7694         if (res)
7695                 return res;
7696
7697         /* prepare_wdev_dump parsed the attributes */
7698         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7699
7700         if (!wdev->netdev) {
7701                 res = -EINVAL;
7702                 goto out_err;
7703         }
7704
7705         if (!rdev->ops->dump_survey) {
7706                 res = -EOPNOTSUPP;
7707                 goto out_err;
7708         }
7709
7710         while (1) {
7711                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
7712                 if (res == -ENOENT)
7713                         break;
7714                 if (res)
7715                         goto out_err;
7716
7717                 /* don't send disabled channels, but do send non-channel data */
7718                 if (survey.channel &&
7719                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
7720                         survey_idx++;
7721                         continue;
7722                 }
7723
7724                 if (nl80211_send_survey(skb,
7725                                 NETLINK_CB(cb->skb).portid,
7726                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7727                                 wdev->netdev, radio_stats, &survey) < 0)
7728                         goto out;
7729                 survey_idx++;
7730         }
7731
7732  out:
7733         cb->args[2] = survey_idx;
7734         res = skb->len;
7735  out_err:
7736         nl80211_finish_wdev_dump(rdev);
7737         return res;
7738 }
7739
7740 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
7741 {
7742         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
7743                                   NL80211_WPA_VERSION_2));
7744 }
7745
7746 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
7747 {
7748         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7749         struct net_device *dev = info->user_ptr[1];
7750         struct ieee80211_channel *chan;
7751         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
7752         int err, ssid_len, ie_len = 0, auth_data_len = 0;
7753         enum nl80211_auth_type auth_type;
7754         struct key_parse key;
7755         bool local_state_change;
7756
7757         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7758                 return -EINVAL;
7759
7760         if (!info->attrs[NL80211_ATTR_MAC])
7761                 return -EINVAL;
7762
7763         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
7764                 return -EINVAL;
7765
7766         if (!info->attrs[NL80211_ATTR_SSID])
7767                 return -EINVAL;
7768
7769         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7770                 return -EINVAL;
7771
7772         err = nl80211_parse_key(info, &key);
7773         if (err)
7774                 return err;
7775
7776         if (key.idx >= 0) {
7777                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
7778                         return -EINVAL;
7779                 if (!key.p.key || !key.p.key_len)
7780                         return -EINVAL;
7781                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
7782                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
7783                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
7784                      key.p.key_len != WLAN_KEY_LEN_WEP104))
7785                         return -EINVAL;
7786                 if (key.idx > 3)
7787                         return -EINVAL;
7788         } else {
7789                 key.p.key_len = 0;
7790                 key.p.key = NULL;
7791         }
7792
7793         if (key.idx >= 0) {
7794                 int i;
7795                 bool ok = false;
7796
7797                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
7798                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
7799                                 ok = true;
7800                                 break;
7801                         }
7802                 }
7803                 if (!ok)
7804                         return -EINVAL;
7805         }
7806
7807         if (!rdev->ops->auth)
7808                 return -EOPNOTSUPP;
7809
7810         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7811             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7812                 return -EOPNOTSUPP;
7813
7814         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7815         chan = nl80211_get_valid_chan(&rdev->wiphy,
7816                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7817         if (!chan)
7818                 return -EINVAL;
7819
7820         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7821         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7822
7823         if (info->attrs[NL80211_ATTR_IE]) {
7824                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7825                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7826         }
7827
7828         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7829         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
7830                 return -EINVAL;
7831
7832         if ((auth_type == NL80211_AUTHTYPE_SAE ||
7833              auth_type == NL80211_AUTHTYPE_FILS_SK ||
7834              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
7835              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
7836             !info->attrs[NL80211_ATTR_AUTH_DATA])
7837                 return -EINVAL;
7838
7839         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
7840                 if (auth_type != NL80211_AUTHTYPE_SAE &&
7841                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
7842                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
7843                     auth_type != NL80211_AUTHTYPE_FILS_PK)
7844                         return -EINVAL;
7845                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
7846                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
7847                 /* need to include at least Auth Transaction and Status Code */
7848                 if (auth_data_len < 4)
7849                         return -EINVAL;
7850         }
7851
7852         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7853
7854         /*
7855          * Since we no longer track auth state, ignore
7856          * requests to only change local state.
7857          */
7858         if (local_state_change)
7859                 return 0;
7860
7861         wdev_lock(dev->ieee80211_ptr);
7862         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
7863                                  ssid, ssid_len, ie, ie_len,
7864                                  key.p.key, key.p.key_len, key.idx,
7865                                  auth_data, auth_data_len);
7866         wdev_unlock(dev->ieee80211_ptr);
7867         return err;
7868 }
7869
7870 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
7871                                    struct genl_info *info,
7872                                    struct cfg80211_crypto_settings *settings,
7873                                    int cipher_limit)
7874 {
7875         memset(settings, 0, sizeof(*settings));
7876
7877         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
7878
7879         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
7880                 u16 proto;
7881
7882                 proto = nla_get_u16(
7883                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
7884                 settings->control_port_ethertype = cpu_to_be16(proto);
7885                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
7886                     proto != ETH_P_PAE)
7887                         return -EINVAL;
7888                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
7889                         settings->control_port_no_encrypt = true;
7890         } else
7891                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
7892
7893         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
7894                 void *data;
7895                 int len, i;
7896
7897                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7898                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7899                 settings->n_ciphers_pairwise = len / sizeof(u32);
7900
7901                 if (len % sizeof(u32))
7902                         return -EINVAL;
7903
7904                 if (settings->n_ciphers_pairwise > cipher_limit)
7905                         return -EINVAL;
7906
7907                 memcpy(settings->ciphers_pairwise, data, len);
7908
7909                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
7910                         if (!cfg80211_supported_cipher_suite(
7911                                         &rdev->wiphy,
7912                                         settings->ciphers_pairwise[i]))
7913                                 return -EINVAL;
7914         }
7915
7916         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
7917                 settings->cipher_group =
7918                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
7919                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
7920                                                      settings->cipher_group))
7921                         return -EINVAL;
7922         }
7923
7924         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
7925                 settings->wpa_versions =
7926                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
7927                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
7928                         return -EINVAL;
7929         }
7930
7931         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
7932                 void *data;
7933                 int len;
7934
7935                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
7936                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
7937                 settings->n_akm_suites = len / sizeof(u32);
7938
7939                 if (len % sizeof(u32))
7940                         return -EINVAL;
7941
7942                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
7943                         return -EINVAL;
7944
7945                 memcpy(settings->akm_suites, data, len);
7946         }
7947
7948         return 0;
7949 }
7950
7951 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
7952 {
7953         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7954         struct net_device *dev = info->user_ptr[1];
7955         struct ieee80211_channel *chan;
7956         struct cfg80211_assoc_request req = {};
7957         const u8 *bssid, *ssid;
7958         int err, ssid_len = 0;
7959
7960         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7961                 return -EINVAL;
7962
7963         if (!info->attrs[NL80211_ATTR_MAC] ||
7964             !info->attrs[NL80211_ATTR_SSID] ||
7965             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7966                 return -EINVAL;
7967
7968         if (!rdev->ops->assoc)
7969                 return -EOPNOTSUPP;
7970
7971         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7972             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7973                 return -EOPNOTSUPP;
7974
7975         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7976
7977         chan = nl80211_get_valid_chan(&rdev->wiphy,
7978                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7979         if (!chan)
7980                 return -EINVAL;
7981
7982         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7983         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7984
7985         if (info->attrs[NL80211_ATTR_IE]) {
7986                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7987                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7988         }
7989
7990         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7991                 enum nl80211_mfp mfp =
7992                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7993                 if (mfp == NL80211_MFP_REQUIRED)
7994                         req.use_mfp = true;
7995                 else if (mfp != NL80211_MFP_NO)
7996                         return -EINVAL;
7997         }
7998
7999         if (info->attrs[NL80211_ATTR_PREV_BSSID])
8000                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8001
8002         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8003                 req.flags |= ASSOC_REQ_DISABLE_HT;
8004
8005         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8006                 memcpy(&req.ht_capa_mask,
8007                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8008                        sizeof(req.ht_capa_mask));
8009
8010         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8011                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8012                         return -EINVAL;
8013                 memcpy(&req.ht_capa,
8014                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8015                        sizeof(req.ht_capa));
8016         }
8017
8018         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8019                 req.flags |= ASSOC_REQ_DISABLE_VHT;
8020
8021         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8022                 memcpy(&req.vht_capa_mask,
8023                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8024                        sizeof(req.vht_capa_mask));
8025
8026         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8027                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8028                         return -EINVAL;
8029                 memcpy(&req.vht_capa,
8030                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8031                        sizeof(req.vht_capa));
8032         }
8033
8034         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8035                 if (!((rdev->wiphy.features &
8036                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8037                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8038                     !wiphy_ext_feature_isset(&rdev->wiphy,
8039                                              NL80211_EXT_FEATURE_RRM))
8040                         return -EINVAL;
8041                 req.flags |= ASSOC_REQ_USE_RRM;
8042         }
8043
8044         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8045                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8046                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8047                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8048                         return -EINVAL;
8049                 req.fils_nonces =
8050                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8051         }
8052
8053         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8054         if (!err) {
8055                 wdev_lock(dev->ieee80211_ptr);
8056                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8057                                           ssid, ssid_len, &req);
8058                 wdev_unlock(dev->ieee80211_ptr);
8059         }
8060
8061         return err;
8062 }
8063
8064 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8065 {
8066         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8067         struct net_device *dev = info->user_ptr[1];
8068         const u8 *ie = NULL, *bssid;
8069         int ie_len = 0, err;
8070         u16 reason_code;
8071         bool local_state_change;
8072
8073         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8074                 return -EINVAL;
8075
8076         if (!info->attrs[NL80211_ATTR_MAC])
8077                 return -EINVAL;
8078
8079         if (!info->attrs[NL80211_ATTR_REASON_CODE])
8080                 return -EINVAL;
8081
8082         if (!rdev->ops->deauth)
8083                 return -EOPNOTSUPP;
8084
8085         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8086             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8087                 return -EOPNOTSUPP;
8088
8089         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8090
8091         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8092         if (reason_code == 0) {
8093                 /* Reason Code 0 is reserved */
8094                 return -EINVAL;
8095         }
8096
8097         if (info->attrs[NL80211_ATTR_IE]) {
8098                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8099                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8100         }
8101
8102         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8103
8104         wdev_lock(dev->ieee80211_ptr);
8105         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8106                                    local_state_change);
8107         wdev_unlock(dev->ieee80211_ptr);
8108         return err;
8109 }
8110
8111 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8112 {
8113         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8114         struct net_device *dev = info->user_ptr[1];
8115         const u8 *ie = NULL, *bssid;
8116         int ie_len = 0, err;
8117         u16 reason_code;
8118         bool local_state_change;
8119
8120         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8121                 return -EINVAL;
8122
8123         if (!info->attrs[NL80211_ATTR_MAC])
8124                 return -EINVAL;
8125
8126         if (!info->attrs[NL80211_ATTR_REASON_CODE])
8127                 return -EINVAL;
8128
8129         if (!rdev->ops->disassoc)
8130                 return -EOPNOTSUPP;
8131
8132         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8133             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8134                 return -EOPNOTSUPP;
8135
8136         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8137
8138         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8139         if (reason_code == 0) {
8140                 /* Reason Code 0 is reserved */
8141                 return -EINVAL;
8142         }
8143
8144         if (info->attrs[NL80211_ATTR_IE]) {
8145                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8146                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8147         }
8148
8149         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8150
8151         wdev_lock(dev->ieee80211_ptr);
8152         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8153                                      local_state_change);
8154         wdev_unlock(dev->ieee80211_ptr);
8155         return err;
8156 }
8157
8158 static bool
8159 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8160                          int mcast_rate[NUM_NL80211_BANDS],
8161                          int rateval)
8162 {
8163         struct wiphy *wiphy = &rdev->wiphy;
8164         bool found = false;
8165         int band, i;
8166
8167         for (band = 0; band < NUM_NL80211_BANDS; band++) {
8168                 struct ieee80211_supported_band *sband;
8169
8170                 sband = wiphy->bands[band];
8171                 if (!sband)
8172                         continue;
8173
8174                 for (i = 0; i < sband->n_bitrates; i++) {
8175                         if (sband->bitrates[i].bitrate == rateval) {
8176                                 mcast_rate[band] = i + 1;
8177                                 found = true;
8178                                 break;
8179                         }
8180                 }
8181         }
8182
8183         return found;
8184 }
8185
8186 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8187 {
8188         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8189         struct net_device *dev = info->user_ptr[1];
8190         struct cfg80211_ibss_params ibss;
8191         struct wiphy *wiphy;
8192         struct cfg80211_cached_keys *connkeys = NULL;
8193         int err;
8194
8195         memset(&ibss, 0, sizeof(ibss));
8196
8197         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8198                 return -EINVAL;
8199
8200         if (!info->attrs[NL80211_ATTR_SSID] ||
8201             !nla_len(info->attrs[NL80211_ATTR_SSID]))
8202                 return -EINVAL;
8203
8204         ibss.beacon_interval = 100;
8205
8206         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8207                 ibss.beacon_interval =
8208                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8209
8210         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8211                                            ibss.beacon_interval);
8212         if (err)
8213                 return err;
8214
8215         if (!rdev->ops->join_ibss)
8216                 return -EOPNOTSUPP;
8217
8218         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8219                 return -EOPNOTSUPP;
8220
8221         wiphy = &rdev->wiphy;
8222
8223         if (info->attrs[NL80211_ATTR_MAC]) {
8224                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8225
8226                 if (!is_valid_ether_addr(ibss.bssid))
8227                         return -EINVAL;
8228         }
8229         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8230         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8231
8232         if (info->attrs[NL80211_ATTR_IE]) {
8233                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8234                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8235         }
8236
8237         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8238         if (err)
8239                 return err;
8240
8241         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8242                                      NL80211_IFTYPE_ADHOC))
8243                 return -EINVAL;
8244
8245         switch (ibss.chandef.width) {
8246         case NL80211_CHAN_WIDTH_5:
8247         case NL80211_CHAN_WIDTH_10:
8248         case NL80211_CHAN_WIDTH_20_NOHT:
8249                 break;
8250         case NL80211_CHAN_WIDTH_20:
8251         case NL80211_CHAN_WIDTH_40:
8252                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8253                         return -EINVAL;
8254                 break;
8255         case NL80211_CHAN_WIDTH_80:
8256         case NL80211_CHAN_WIDTH_80P80:
8257         case NL80211_CHAN_WIDTH_160:
8258                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8259                         return -EINVAL;
8260                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8261                                              NL80211_EXT_FEATURE_VHT_IBSS))
8262                         return -EINVAL;
8263                 break;
8264         default:
8265                 return -EINVAL;
8266         }
8267
8268         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8269         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8270
8271         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8272                 u8 *rates =
8273                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8274                 int n_rates =
8275                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8276                 struct ieee80211_supported_band *sband =
8277                         wiphy->bands[ibss.chandef.chan->band];
8278
8279                 err = ieee80211_get_ratemask(sband, rates, n_rates,
8280                                              &ibss.basic_rates);
8281                 if (err)
8282                         return err;
8283         }
8284
8285         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8286                 memcpy(&ibss.ht_capa_mask,
8287                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8288                        sizeof(ibss.ht_capa_mask));
8289
8290         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8291                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8292                         return -EINVAL;
8293                 memcpy(&ibss.ht_capa,
8294                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8295                        sizeof(ibss.ht_capa));
8296         }
8297
8298         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8299             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8300                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8301                 return -EINVAL;
8302
8303         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8304                 bool no_ht = false;
8305
8306                 connkeys = nl80211_parse_connkeys(rdev,
8307                                           info->attrs[NL80211_ATTR_KEYS],
8308                                           &no_ht);
8309                 if (IS_ERR(connkeys))
8310                         return PTR_ERR(connkeys);
8311
8312                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8313                     no_ht) {
8314                         kzfree(connkeys);
8315                         return -EINVAL;
8316                 }
8317         }
8318
8319         ibss.control_port =
8320                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8321
8322         ibss.userspace_handles_dfs =
8323                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8324
8325         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8326         if (err)
8327                 kzfree(connkeys);
8328         return err;
8329 }
8330
8331 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8332 {
8333         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8334         struct net_device *dev = info->user_ptr[1];
8335
8336         if (!rdev->ops->leave_ibss)
8337                 return -EOPNOTSUPP;
8338
8339         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8340                 return -EOPNOTSUPP;
8341
8342         return cfg80211_leave_ibss(rdev, dev, false);
8343 }
8344
8345 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8346 {
8347         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8348         struct net_device *dev = info->user_ptr[1];
8349         int mcast_rate[NUM_NL80211_BANDS];
8350         u32 nla_rate;
8351         int err;
8352
8353         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8354             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8355             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8356                 return -EOPNOTSUPP;
8357
8358         if (!rdev->ops->set_mcast_rate)
8359                 return -EOPNOTSUPP;
8360
8361         memset(mcast_rate, 0, sizeof(mcast_rate));
8362
8363         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8364                 return -EINVAL;
8365
8366         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8367         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8368                 return -EINVAL;
8369
8370         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8371
8372         return err;
8373 }
8374
8375 static struct sk_buff *
8376 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8377                             struct wireless_dev *wdev, int approxlen,
8378                             u32 portid, u32 seq, enum nl80211_commands cmd,
8379                             enum nl80211_attrs attr,
8380                             const struct nl80211_vendor_cmd_info *info,
8381                             gfp_t gfp)
8382 {
8383         struct sk_buff *skb;
8384         void *hdr;
8385         struct nlattr *data;
8386
8387         skb = nlmsg_new(approxlen + 100, gfp);
8388         if (!skb)
8389                 return NULL;
8390
8391         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8392         if (!hdr) {
8393                 kfree_skb(skb);
8394                 return NULL;
8395         }
8396
8397         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8398                 goto nla_put_failure;
8399
8400         if (info) {
8401                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8402                                 info->vendor_id))
8403                         goto nla_put_failure;
8404                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8405                                 info->subcmd))
8406                         goto nla_put_failure;
8407         }
8408
8409         if (wdev) {
8410                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8411                                       wdev_id(wdev), NL80211_ATTR_PAD))
8412                         goto nla_put_failure;
8413                 if (wdev->netdev &&
8414                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8415                                 wdev->netdev->ifindex))
8416                         goto nla_put_failure;
8417         }
8418
8419         data = nla_nest_start(skb, attr);
8420         if (!data)
8421                 goto nla_put_failure;
8422
8423         ((void **)skb->cb)[0] = rdev;
8424         ((void **)skb->cb)[1] = hdr;
8425         ((void **)skb->cb)[2] = data;
8426
8427         return skb;
8428
8429  nla_put_failure:
8430         kfree_skb(skb);
8431         return NULL;
8432 }
8433
8434 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8435                                            struct wireless_dev *wdev,
8436                                            enum nl80211_commands cmd,
8437                                            enum nl80211_attrs attr,
8438                                            int vendor_event_idx,
8439                                            int approxlen, gfp_t gfp)
8440 {
8441         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8442         const struct nl80211_vendor_cmd_info *info;
8443
8444         switch (cmd) {
8445         case NL80211_CMD_TESTMODE:
8446                 if (WARN_ON(vendor_event_idx != -1))
8447                         return NULL;
8448                 info = NULL;
8449                 break;
8450         case NL80211_CMD_VENDOR:
8451                 if (WARN_ON(vendor_event_idx < 0 ||
8452                             vendor_event_idx >= wiphy->n_vendor_events))
8453                         return NULL;
8454                 info = &wiphy->vendor_events[vendor_event_idx];
8455                 break;
8456         default:
8457                 WARN_ON(1);
8458                 return NULL;
8459         }
8460
8461         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8462                                            cmd, attr, info, gfp);
8463 }
8464 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8465
8466 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8467 {
8468         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8469         void *hdr = ((void **)skb->cb)[1];
8470         struct nlattr *data = ((void **)skb->cb)[2];
8471         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8472
8473         /* clear CB data for netlink core to own from now on */
8474         memset(skb->cb, 0, sizeof(skb->cb));
8475
8476         nla_nest_end(skb, data);
8477         genlmsg_end(skb, hdr);
8478
8479         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8480                 mcgrp = NL80211_MCGRP_VENDOR;
8481
8482         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8483                                 mcgrp, gfp);
8484 }
8485 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8486
8487 #ifdef CONFIG_NL80211_TESTMODE
8488 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8489 {
8490         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8491         struct wireless_dev *wdev =
8492                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8493         int err;
8494
8495         if (!rdev->ops->testmode_cmd)
8496                 return -EOPNOTSUPP;
8497
8498         if (IS_ERR(wdev)) {
8499                 err = PTR_ERR(wdev);
8500                 if (err != -EINVAL)
8501                         return err;
8502                 wdev = NULL;
8503         } else if (wdev->wiphy != &rdev->wiphy) {
8504                 return -EINVAL;
8505         }
8506
8507         if (!info->attrs[NL80211_ATTR_TESTDATA])
8508                 return -EINVAL;
8509
8510         rdev->cur_cmd_info = info;
8511         err = rdev_testmode_cmd(rdev, wdev,
8512                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8513                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8514         rdev->cur_cmd_info = NULL;
8515
8516         return err;
8517 }
8518
8519 static int nl80211_testmode_dump(struct sk_buff *skb,
8520                                  struct netlink_callback *cb)
8521 {
8522         struct cfg80211_registered_device *rdev;
8523         int err;
8524         long phy_idx;
8525         void *data = NULL;
8526         int data_len = 0;
8527
8528         rtnl_lock();
8529
8530         if (cb->args[0]) {
8531                 /*
8532                  * 0 is a valid index, but not valid for args[0],
8533                  * so we need to offset by 1.
8534                  */
8535                 phy_idx = cb->args[0] - 1;
8536         } else {
8537                 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8538
8539                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8540                                   attrbuf, nl80211_fam.maxattr, nl80211_policy);
8541                 if (err)
8542                         goto out_err;
8543
8544                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
8545                 if (IS_ERR(rdev)) {
8546                         err = PTR_ERR(rdev);
8547                         goto out_err;
8548                 }
8549                 phy_idx = rdev->wiphy_idx;
8550                 rdev = NULL;
8551
8552                 if (attrbuf[NL80211_ATTR_TESTDATA])
8553                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
8554         }
8555
8556         if (cb->args[1]) {
8557                 data = nla_data((void *)cb->args[1]);
8558                 data_len = nla_len((void *)cb->args[1]);
8559         }
8560
8561         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8562         if (!rdev) {
8563                 err = -ENOENT;
8564                 goto out_err;
8565         }
8566
8567         if (!rdev->ops->testmode_dump) {
8568                 err = -EOPNOTSUPP;
8569                 goto out_err;
8570         }
8571
8572         while (1) {
8573                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8574                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
8575                                            NL80211_CMD_TESTMODE);
8576                 struct nlattr *tmdata;
8577
8578                 if (!hdr)
8579                         break;
8580
8581                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8582                         genlmsg_cancel(skb, hdr);
8583                         break;
8584                 }
8585
8586                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8587                 if (!tmdata) {
8588                         genlmsg_cancel(skb, hdr);
8589                         break;
8590                 }
8591                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8592                 nla_nest_end(skb, tmdata);
8593
8594                 if (err == -ENOBUFS || err == -ENOENT) {
8595                         genlmsg_cancel(skb, hdr);
8596                         break;
8597                 } else if (err) {
8598                         genlmsg_cancel(skb, hdr);
8599                         goto out_err;
8600                 }
8601
8602                 genlmsg_end(skb, hdr);
8603         }
8604
8605         err = skb->len;
8606         /* see above */
8607         cb->args[0] = phy_idx + 1;
8608  out_err:
8609         rtnl_unlock();
8610         return err;
8611 }
8612 #endif
8613
8614 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8615 {
8616         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8617         struct net_device *dev = info->user_ptr[1];
8618         struct cfg80211_connect_params connect;
8619         struct wiphy *wiphy;
8620         struct cfg80211_cached_keys *connkeys = NULL;
8621         int err;
8622
8623         memset(&connect, 0, sizeof(connect));
8624
8625         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8626                 return -EINVAL;
8627
8628         if (!info->attrs[NL80211_ATTR_SSID] ||
8629             !nla_len(info->attrs[NL80211_ATTR_SSID]))
8630                 return -EINVAL;
8631
8632         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8633                 connect.auth_type =
8634                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8635                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8636                                              NL80211_CMD_CONNECT))
8637                         return -EINVAL;
8638         } else
8639                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8640
8641         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8642
8643         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8644                                       NL80211_MAX_NR_CIPHER_SUITES);
8645         if (err)
8646                 return err;
8647
8648         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8649             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8650                 return -EOPNOTSUPP;
8651
8652         wiphy = &rdev->wiphy;
8653
8654         connect.bg_scan_period = -1;
8655         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8656                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8657                 connect.bg_scan_period =
8658                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8659         }
8660
8661         if (info->attrs[NL80211_ATTR_MAC])
8662                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8663         else if (info->attrs[NL80211_ATTR_MAC_HINT])
8664                 connect.bssid_hint =
8665                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8666         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8667         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8668
8669         if (info->attrs[NL80211_ATTR_IE]) {
8670                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8671                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8672         }
8673
8674         if (info->attrs[NL80211_ATTR_USE_MFP]) {
8675                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8676                 if (connect.mfp != NL80211_MFP_REQUIRED &&
8677                     connect.mfp != NL80211_MFP_NO)
8678                         return -EINVAL;
8679         } else {
8680                 connect.mfp = NL80211_MFP_NO;
8681         }
8682
8683         if (info->attrs[NL80211_ATTR_PREV_BSSID])
8684                 connect.prev_bssid =
8685                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8686
8687         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8688                 connect.channel = nl80211_get_valid_chan(
8689                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8690                 if (!connect.channel)
8691                         return -EINVAL;
8692         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
8693                 connect.channel_hint = nl80211_get_valid_chan(
8694                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
8695                 if (!connect.channel_hint)
8696                         return -EINVAL;
8697         }
8698
8699         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8700                 connkeys = nl80211_parse_connkeys(rdev,
8701                                           info->attrs[NL80211_ATTR_KEYS], NULL);
8702                 if (IS_ERR(connkeys))
8703                         return PTR_ERR(connkeys);
8704         }
8705
8706         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8707                 connect.flags |= ASSOC_REQ_DISABLE_HT;
8708
8709         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8710                 memcpy(&connect.ht_capa_mask,
8711                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8712                        sizeof(connect.ht_capa_mask));
8713
8714         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8715                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
8716                         kzfree(connkeys);
8717                         return -EINVAL;
8718                 }
8719                 memcpy(&connect.ht_capa,
8720                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8721                        sizeof(connect.ht_capa));
8722         }
8723
8724         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8725                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
8726
8727         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8728                 memcpy(&connect.vht_capa_mask,
8729                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8730                        sizeof(connect.vht_capa_mask));
8731
8732         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8733                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
8734                         kzfree(connkeys);
8735                         return -EINVAL;
8736                 }
8737                 memcpy(&connect.vht_capa,
8738                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8739                        sizeof(connect.vht_capa));
8740         }
8741
8742         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8743                 if (!((rdev->wiphy.features &
8744                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8745                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8746                     !wiphy_ext_feature_isset(&rdev->wiphy,
8747                                              NL80211_EXT_FEATURE_RRM)) {
8748                         kzfree(connkeys);
8749                         return -EINVAL;
8750                 }
8751                 connect.flags |= ASSOC_REQ_USE_RRM;
8752         }
8753
8754         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
8755         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
8756                 kzfree(connkeys);
8757                 return -EOPNOTSUPP;
8758         }
8759
8760         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
8761                 /* bss selection makes no sense if bssid is set */
8762                 if (connect.bssid) {
8763                         kzfree(connkeys);
8764                         return -EINVAL;
8765                 }
8766
8767                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
8768                                        wiphy, &connect.bss_select);
8769                 if (err) {
8770                         kzfree(connkeys);
8771                         return err;
8772                 }
8773         }
8774
8775         wdev_lock(dev->ieee80211_ptr);
8776         err = cfg80211_connect(rdev, dev, &connect, connkeys,
8777                                connect.prev_bssid);
8778         wdev_unlock(dev->ieee80211_ptr);
8779         if (err)
8780                 kzfree(connkeys);
8781         return err;
8782 }
8783
8784 static int nl80211_update_connect_params(struct sk_buff *skb,
8785                                          struct genl_info *info)
8786 {
8787         struct cfg80211_connect_params connect = {};
8788         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8789         struct net_device *dev = info->user_ptr[1];
8790         struct wireless_dev *wdev = dev->ieee80211_ptr;
8791         u32 changed = 0;
8792         int ret;
8793
8794         if (!rdev->ops->update_connect_params)
8795                 return -EOPNOTSUPP;
8796
8797         if (info->attrs[NL80211_ATTR_IE]) {
8798                 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8799                         return -EINVAL;
8800                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8801                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8802                 changed |= UPDATE_ASSOC_IES;
8803         }
8804
8805         wdev_lock(dev->ieee80211_ptr);
8806         if (!wdev->current_bss)
8807                 ret = -ENOLINK;
8808         else
8809                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
8810         wdev_unlock(dev->ieee80211_ptr);
8811
8812         return ret;
8813 }
8814
8815 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
8816 {
8817         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8818         struct net_device *dev = info->user_ptr[1];
8819         u16 reason;
8820         int ret;
8821
8822         if (!info->attrs[NL80211_ATTR_REASON_CODE])
8823                 reason = WLAN_REASON_DEAUTH_LEAVING;
8824         else
8825                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8826
8827         if (reason == 0)
8828                 return -EINVAL;
8829
8830         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8831             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8832                 return -EOPNOTSUPP;
8833
8834         wdev_lock(dev->ieee80211_ptr);
8835         ret = cfg80211_disconnect(rdev, dev, reason, true);
8836         wdev_unlock(dev->ieee80211_ptr);
8837         return ret;
8838 }
8839
8840 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
8841 {
8842         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8843         struct net *net;
8844         int err;
8845
8846         if (info->attrs[NL80211_ATTR_PID]) {
8847                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
8848
8849                 net = get_net_ns_by_pid(pid);
8850         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
8851                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
8852
8853                 net = get_net_ns_by_fd(fd);
8854         } else {
8855                 return -EINVAL;
8856         }
8857
8858         if (IS_ERR(net))
8859                 return PTR_ERR(net);
8860
8861         err = 0;
8862
8863         /* check if anything to do */
8864         if (!net_eq(wiphy_net(&rdev->wiphy), net))
8865                 err = cfg80211_switch_netns(rdev, net);
8866
8867         put_net(net);
8868         return err;
8869 }
8870
8871 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
8872 {
8873         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8874         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
8875                         struct cfg80211_pmksa *pmksa) = NULL;
8876         struct net_device *dev = info->user_ptr[1];
8877         struct cfg80211_pmksa pmksa;
8878
8879         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
8880
8881         if (!info->attrs[NL80211_ATTR_MAC])
8882                 return -EINVAL;
8883
8884         if (!info->attrs[NL80211_ATTR_PMKID])
8885                 return -EINVAL;
8886
8887         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
8888         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8889
8890         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8891             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8892                 return -EOPNOTSUPP;
8893
8894         switch (info->genlhdr->cmd) {
8895         case NL80211_CMD_SET_PMKSA:
8896                 rdev_ops = rdev->ops->set_pmksa;
8897                 break;
8898         case NL80211_CMD_DEL_PMKSA:
8899                 rdev_ops = rdev->ops->del_pmksa;
8900                 break;
8901         default:
8902                 WARN_ON(1);
8903                 break;
8904         }
8905
8906         if (!rdev_ops)
8907                 return -EOPNOTSUPP;
8908
8909         return rdev_ops(&rdev->wiphy, dev, &pmksa);
8910 }
8911
8912 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
8913 {
8914         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8915         struct net_device *dev = info->user_ptr[1];
8916
8917         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8918             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8919                 return -EOPNOTSUPP;
8920
8921         if (!rdev->ops->flush_pmksa)
8922                 return -EOPNOTSUPP;
8923
8924         return rdev_flush_pmksa(rdev, dev);
8925 }
8926
8927 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
8928 {
8929         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8930         struct net_device *dev = info->user_ptr[1];
8931         u8 action_code, dialog_token;
8932         u32 peer_capability = 0;
8933         u16 status_code;
8934         u8 *peer;
8935         bool initiator;
8936
8937         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8938             !rdev->ops->tdls_mgmt)
8939                 return -EOPNOTSUPP;
8940
8941         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
8942             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
8943             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
8944             !info->attrs[NL80211_ATTR_IE] ||
8945             !info->attrs[NL80211_ATTR_MAC])
8946                 return -EINVAL;
8947
8948         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8949         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
8950         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
8951         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
8952         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
8953         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
8954                 peer_capability =
8955                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
8956
8957         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
8958                               dialog_token, status_code, peer_capability,
8959                               initiator,
8960                               nla_data(info->attrs[NL80211_ATTR_IE]),
8961                               nla_len(info->attrs[NL80211_ATTR_IE]));
8962 }
8963
8964 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
8965 {
8966         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8967         struct net_device *dev = info->user_ptr[1];
8968         enum nl80211_tdls_operation operation;
8969         u8 *peer;
8970
8971         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8972             !rdev->ops->tdls_oper)
8973                 return -EOPNOTSUPP;
8974
8975         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
8976             !info->attrs[NL80211_ATTR_MAC])
8977                 return -EINVAL;
8978
8979         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
8980         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8981
8982         return rdev_tdls_oper(rdev, dev, peer, operation);
8983 }
8984
8985 static int nl80211_remain_on_channel(struct sk_buff *skb,
8986                                      struct genl_info *info)
8987 {
8988         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8989         struct wireless_dev *wdev = info->user_ptr[1];
8990         struct cfg80211_chan_def chandef;
8991         struct sk_buff *msg;
8992         void *hdr;
8993         u64 cookie;
8994         u32 duration;
8995         int err;
8996
8997         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8998             !info->attrs[NL80211_ATTR_DURATION])
8999                 return -EINVAL;
9000
9001         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9002
9003         if (!rdev->ops->remain_on_channel ||
9004             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9005                 return -EOPNOTSUPP;
9006
9007         /*
9008          * We should be on that channel for at least a minimum amount of
9009          * time (10ms) but no longer than the driver supports.
9010          */
9011         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9012             duration > rdev->wiphy.max_remain_on_channel_duration)
9013                 return -EINVAL;
9014
9015         err = nl80211_parse_chandef(rdev, info, &chandef);
9016         if (err)
9017                 return err;
9018
9019         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9020         if (!msg)
9021                 return -ENOMEM;
9022
9023         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9024                              NL80211_CMD_REMAIN_ON_CHANNEL);
9025         if (!hdr) {
9026                 err = -ENOBUFS;
9027                 goto free_msg;
9028         }
9029
9030         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9031                                      duration, &cookie);
9032
9033         if (err)
9034                 goto free_msg;
9035
9036         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9037                               NL80211_ATTR_PAD))
9038                 goto nla_put_failure;
9039
9040         genlmsg_end(msg, hdr);
9041
9042         return genlmsg_reply(msg, info);
9043
9044  nla_put_failure:
9045         err = -ENOBUFS;
9046  free_msg:
9047         nlmsg_free(msg);
9048         return err;
9049 }
9050
9051 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9052                                             struct genl_info *info)
9053 {
9054         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9055         struct wireless_dev *wdev = info->user_ptr[1];
9056         u64 cookie;
9057
9058         if (!info->attrs[NL80211_ATTR_COOKIE])
9059                 return -EINVAL;
9060
9061         if (!rdev->ops->cancel_remain_on_channel)
9062                 return -EOPNOTSUPP;
9063
9064         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9065
9066         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9067 }
9068
9069 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9070                                        struct genl_info *info)
9071 {
9072         struct cfg80211_bitrate_mask mask;
9073         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9074         struct net_device *dev = info->user_ptr[1];
9075         int err;
9076
9077         if (!rdev->ops->set_bitrate_mask)
9078                 return -EOPNOTSUPP;
9079
9080         err = nl80211_parse_tx_bitrate_mask(info, &mask);
9081         if (err)
9082                 return err;
9083
9084         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9085 }
9086
9087 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9088 {
9089         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9090         struct wireless_dev *wdev = info->user_ptr[1];
9091         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9092
9093         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9094                 return -EINVAL;
9095
9096         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9097                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9098
9099         switch (wdev->iftype) {
9100         case NL80211_IFTYPE_STATION:
9101         case NL80211_IFTYPE_ADHOC:
9102         case NL80211_IFTYPE_P2P_CLIENT:
9103         case NL80211_IFTYPE_AP:
9104         case NL80211_IFTYPE_AP_VLAN:
9105         case NL80211_IFTYPE_MESH_POINT:
9106         case NL80211_IFTYPE_P2P_GO:
9107         case NL80211_IFTYPE_P2P_DEVICE:
9108                 break;
9109         case NL80211_IFTYPE_NAN:
9110         default:
9111                 return -EOPNOTSUPP;
9112         }
9113
9114         /* not much point in registering if we can't reply */
9115         if (!rdev->ops->mgmt_tx)
9116                 return -EOPNOTSUPP;
9117
9118         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9119                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9120                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9121 }
9122
9123 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9124 {
9125         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9126         struct wireless_dev *wdev = info->user_ptr[1];
9127         struct cfg80211_chan_def chandef;
9128         int err;
9129         void *hdr = NULL;
9130         u64 cookie;
9131         struct sk_buff *msg = NULL;
9132         struct cfg80211_mgmt_tx_params params = {
9133                 .dont_wait_for_ack =
9134                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9135         };
9136
9137         if (!info->attrs[NL80211_ATTR_FRAME])
9138                 return -EINVAL;
9139
9140         if (!rdev->ops->mgmt_tx)
9141                 return -EOPNOTSUPP;
9142
9143         switch (wdev->iftype) {
9144         case NL80211_IFTYPE_P2P_DEVICE:
9145                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9146                         return -EINVAL;
9147         case NL80211_IFTYPE_STATION:
9148         case NL80211_IFTYPE_ADHOC:
9149         case NL80211_IFTYPE_P2P_CLIENT:
9150         case NL80211_IFTYPE_AP:
9151         case NL80211_IFTYPE_AP_VLAN:
9152         case NL80211_IFTYPE_MESH_POINT:
9153         case NL80211_IFTYPE_P2P_GO:
9154                 break;
9155         case NL80211_IFTYPE_NAN:
9156         default:
9157                 return -EOPNOTSUPP;
9158         }
9159
9160         if (info->attrs[NL80211_ATTR_DURATION]) {
9161                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9162                         return -EINVAL;
9163                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9164
9165                 /*
9166                  * We should wait on the channel for at least a minimum amount
9167                  * of time (10ms) but no longer than the driver supports.
9168                  */
9169                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9170                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
9171                         return -EINVAL;
9172         }
9173
9174         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9175
9176         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9177                 return -EINVAL;
9178
9179         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9180
9181         /* get the channel if any has been specified, otherwise pass NULL to
9182          * the driver. The latter will use the current one
9183          */
9184         chandef.chan = NULL;
9185         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9186                 err = nl80211_parse_chandef(rdev, info, &chandef);
9187                 if (err)
9188                         return err;
9189         }
9190
9191         if (!chandef.chan && params.offchan)
9192                 return -EINVAL;
9193
9194         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9195         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9196
9197         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9198                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9199                 int i;
9200
9201                 if (len % sizeof(u16))
9202                         return -EINVAL;
9203
9204                 params.n_csa_offsets = len / sizeof(u16);
9205                 params.csa_offsets =
9206                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9207
9208                 /* check that all the offsets fit the frame */
9209                 for (i = 0; i < params.n_csa_offsets; i++) {
9210                         if (params.csa_offsets[i] >= params.len)
9211                                 return -EINVAL;
9212                 }
9213         }
9214
9215         if (!params.dont_wait_for_ack) {
9216                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9217                 if (!msg)
9218                         return -ENOMEM;
9219
9220                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9221                                      NL80211_CMD_FRAME);
9222                 if (!hdr) {
9223                         err = -ENOBUFS;
9224                         goto free_msg;
9225                 }
9226         }
9227
9228         params.chan = chandef.chan;
9229         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9230         if (err)
9231                 goto free_msg;
9232
9233         if (msg) {
9234                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9235                                       NL80211_ATTR_PAD))
9236                         goto nla_put_failure;
9237
9238                 genlmsg_end(msg, hdr);
9239                 return genlmsg_reply(msg, info);
9240         }
9241
9242         return 0;
9243
9244  nla_put_failure:
9245         err = -ENOBUFS;
9246  free_msg:
9247         nlmsg_free(msg);
9248         return err;
9249 }
9250
9251 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9252 {
9253         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9254         struct wireless_dev *wdev = info->user_ptr[1];
9255         u64 cookie;
9256
9257         if (!info->attrs[NL80211_ATTR_COOKIE])
9258                 return -EINVAL;
9259
9260         if (!rdev->ops->mgmt_tx_cancel_wait)
9261                 return -EOPNOTSUPP;
9262
9263         switch (wdev->iftype) {
9264         case NL80211_IFTYPE_STATION:
9265         case NL80211_IFTYPE_ADHOC:
9266         case NL80211_IFTYPE_P2P_CLIENT:
9267         case NL80211_IFTYPE_AP:
9268         case NL80211_IFTYPE_AP_VLAN:
9269         case NL80211_IFTYPE_P2P_GO:
9270         case NL80211_IFTYPE_P2P_DEVICE:
9271                 break;
9272         case NL80211_IFTYPE_NAN:
9273         default:
9274                 return -EOPNOTSUPP;
9275         }
9276
9277         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9278
9279         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9280 }
9281
9282 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9283 {
9284         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9285         struct wireless_dev *wdev;
9286         struct net_device *dev = info->user_ptr[1];
9287         u8 ps_state;
9288         bool state;
9289         int err;
9290
9291         if (!info->attrs[NL80211_ATTR_PS_STATE])
9292                 return -EINVAL;
9293
9294         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9295
9296         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9297                 return -EINVAL;
9298
9299         wdev = dev->ieee80211_ptr;
9300
9301         if (!rdev->ops->set_power_mgmt)
9302                 return -EOPNOTSUPP;
9303
9304         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9305
9306         if (state == wdev->ps)
9307                 return 0;
9308
9309         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9310         if (!err)
9311                 wdev->ps = state;
9312         return err;
9313 }
9314
9315 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9316 {
9317         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9318         enum nl80211_ps_state ps_state;
9319         struct wireless_dev *wdev;
9320         struct net_device *dev = info->user_ptr[1];
9321         struct sk_buff *msg;
9322         void *hdr;
9323         int err;
9324
9325         wdev = dev->ieee80211_ptr;
9326
9327         if (!rdev->ops->set_power_mgmt)
9328                 return -EOPNOTSUPP;
9329
9330         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9331         if (!msg)
9332                 return -ENOMEM;
9333
9334         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9335                              NL80211_CMD_GET_POWER_SAVE);
9336         if (!hdr) {
9337                 err = -ENOBUFS;
9338                 goto free_msg;
9339         }
9340
9341         if (wdev->ps)
9342                 ps_state = NL80211_PS_ENABLED;
9343         else
9344                 ps_state = NL80211_PS_DISABLED;
9345
9346         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9347                 goto nla_put_failure;
9348
9349         genlmsg_end(msg, hdr);
9350         return genlmsg_reply(msg, info);
9351
9352  nla_put_failure:
9353         err = -ENOBUFS;
9354  free_msg:
9355         nlmsg_free(msg);
9356         return err;
9357 }
9358
9359 static const struct nla_policy
9360 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9361         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
9362         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9363         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9364         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9365         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9366         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9367 };
9368
9369 static int nl80211_set_cqm_txe(struct genl_info *info,
9370                                u32 rate, u32 pkts, u32 intvl)
9371 {
9372         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9373         struct net_device *dev = info->user_ptr[1];
9374         struct wireless_dev *wdev = dev->ieee80211_ptr;
9375
9376         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9377                 return -EINVAL;
9378
9379         if (!rdev->ops->set_cqm_txe_config)
9380                 return -EOPNOTSUPP;
9381
9382         if (wdev->iftype != NL80211_IFTYPE_STATION &&
9383             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9384                 return -EOPNOTSUPP;
9385
9386         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9387 }
9388
9389 static int nl80211_set_cqm_rssi(struct genl_info *info,
9390                                 s32 threshold, u32 hysteresis)
9391 {
9392         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9393         struct net_device *dev = info->user_ptr[1];
9394         struct wireless_dev *wdev = dev->ieee80211_ptr;
9395
9396         if (threshold > 0)
9397                 return -EINVAL;
9398
9399         /* disabling - hysteresis should also be zero then */
9400         if (threshold == 0)
9401                 hysteresis = 0;
9402
9403         if (!rdev->ops->set_cqm_rssi_config)
9404                 return -EOPNOTSUPP;
9405
9406         if (wdev->iftype != NL80211_IFTYPE_STATION &&
9407             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9408                 return -EOPNOTSUPP;
9409
9410         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
9411 }
9412
9413 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9414 {
9415         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9416         struct nlattr *cqm;
9417         int err;
9418
9419         cqm = info->attrs[NL80211_ATTR_CQM];
9420         if (!cqm)
9421                 return -EINVAL;
9422
9423         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9424                                nl80211_attr_cqm_policy);
9425         if (err)
9426                 return err;
9427
9428         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9429             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9430                 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9431                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9432
9433                 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
9434         }
9435
9436         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9437             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9438             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9439                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9440                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9441                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9442
9443                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9444         }
9445
9446         return -EINVAL;
9447 }
9448
9449 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9450 {
9451         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9452         struct net_device *dev = info->user_ptr[1];
9453         struct ocb_setup setup = {};
9454         int err;
9455
9456         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9457         if (err)
9458                 return err;
9459
9460         return cfg80211_join_ocb(rdev, dev, &setup);
9461 }
9462
9463 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9464 {
9465         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9466         struct net_device *dev = info->user_ptr[1];
9467
9468         return cfg80211_leave_ocb(rdev, dev);
9469 }
9470
9471 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9472 {
9473         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9474         struct net_device *dev = info->user_ptr[1];
9475         struct mesh_config cfg;
9476         struct mesh_setup setup;
9477         int err;
9478
9479         /* start with default */
9480         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9481         memcpy(&setup, &default_mesh_setup, sizeof(setup));
9482
9483         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9484                 /* and parse parameters if given */
9485                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9486                 if (err)
9487                         return err;
9488         }
9489
9490         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9491             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9492                 return -EINVAL;
9493
9494         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
9495         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
9496
9497         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9498             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
9499                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9500                         return -EINVAL;
9501
9502         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
9503                 setup.beacon_interval =
9504                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9505
9506                 err = cfg80211_validate_beacon_int(rdev,
9507                                                    NL80211_IFTYPE_MESH_POINT,
9508                                                    setup.beacon_interval);
9509                 if (err)
9510                         return err;
9511         }
9512
9513         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
9514                 setup.dtim_period =
9515                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
9516                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
9517                         return -EINVAL;
9518         }
9519
9520         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
9521                 /* parse additional setup parameters if given */
9522                 err = nl80211_parse_mesh_setup(info, &setup);
9523                 if (err)
9524                         return err;
9525         }
9526
9527         if (setup.user_mpm)
9528                 cfg.auto_open_plinks = false;
9529
9530         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9531                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9532                 if (err)
9533                         return err;
9534         } else {
9535                 /* cfg80211_join_mesh() will sort it out */
9536                 setup.chandef.chan = NULL;
9537         }
9538
9539         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9540                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9541                 int n_rates =
9542                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9543                 struct ieee80211_supported_band *sband;
9544
9545                 if (!setup.chandef.chan)
9546                         return -EINVAL;
9547
9548                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
9549
9550                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9551                                              &setup.basic_rates);
9552                 if (err)
9553                         return err;
9554         }
9555
9556         if (info->attrs[NL80211_ATTR_TX_RATES]) {
9557                 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
9558                 if (err)
9559                         return err;
9560
9561                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
9562                                               &setup.beacon_rate);
9563                 if (err)
9564                         return err;
9565         }
9566
9567         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
9568 }
9569
9570 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
9571 {
9572         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9573         struct net_device *dev = info->user_ptr[1];
9574
9575         return cfg80211_leave_mesh(rdev, dev);
9576 }
9577
9578 #ifdef CONFIG_PM
9579 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
9580                                         struct cfg80211_registered_device *rdev)
9581 {
9582         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
9583         struct nlattr *nl_pats, *nl_pat;
9584         int i, pat_len;
9585
9586         if (!wowlan->n_patterns)
9587                 return 0;
9588
9589         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
9590         if (!nl_pats)
9591                 return -ENOBUFS;
9592
9593         for (i = 0; i < wowlan->n_patterns; i++) {
9594                 nl_pat = nla_nest_start(msg, i + 1);
9595                 if (!nl_pat)
9596                         return -ENOBUFS;
9597                 pat_len = wowlan->patterns[i].pattern_len;
9598                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
9599                             wowlan->patterns[i].mask) ||
9600                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9601                             wowlan->patterns[i].pattern) ||
9602                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9603                                 wowlan->patterns[i].pkt_offset))
9604                         return -ENOBUFS;
9605                 nla_nest_end(msg, nl_pat);
9606         }
9607         nla_nest_end(msg, nl_pats);
9608
9609         return 0;
9610 }
9611
9612 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
9613                                    struct cfg80211_wowlan_tcp *tcp)
9614 {
9615         struct nlattr *nl_tcp;
9616
9617         if (!tcp)
9618                 return 0;
9619
9620         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
9621         if (!nl_tcp)
9622                 return -ENOBUFS;
9623
9624         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
9625             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
9626             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
9627             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
9628             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
9629             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
9630                     tcp->payload_len, tcp->payload) ||
9631             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
9632                         tcp->data_interval) ||
9633             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
9634                     tcp->wake_len, tcp->wake_data) ||
9635             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
9636                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
9637                 return -ENOBUFS;
9638
9639         if (tcp->payload_seq.len &&
9640             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
9641                     sizeof(tcp->payload_seq), &tcp->payload_seq))
9642                 return -ENOBUFS;
9643
9644         if (tcp->payload_tok.len &&
9645             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
9646                     sizeof(tcp->payload_tok) + tcp->tokens_size,
9647                     &tcp->payload_tok))
9648                 return -ENOBUFS;
9649
9650         nla_nest_end(msg, nl_tcp);
9651
9652         return 0;
9653 }
9654
9655 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
9656                                   struct cfg80211_sched_scan_request *req)
9657 {
9658         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
9659         int i;
9660
9661         if (!req)
9662                 return 0;
9663
9664         nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
9665         if (!nd)
9666                 return -ENOBUFS;
9667
9668         if (req->n_scan_plans == 1 &&
9669             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
9670                         req->scan_plans[0].interval * 1000))
9671                 return -ENOBUFS;
9672
9673         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
9674                 return -ENOBUFS;
9675
9676         freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9677         if (!freqs)
9678                 return -ENOBUFS;
9679
9680         for (i = 0; i < req->n_channels; i++) {
9681                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9682                         return -ENOBUFS;
9683         }
9684
9685         nla_nest_end(msg, freqs);
9686
9687         if (req->n_match_sets) {
9688                 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
9689                 if (!matches)
9690                         return -ENOBUFS;
9691
9692                 for (i = 0; i < req->n_match_sets; i++) {
9693                         match = nla_nest_start(msg, i);
9694                         if (!match)
9695                                 return -ENOBUFS;
9696
9697                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
9698                                     req->match_sets[i].ssid.ssid_len,
9699                                     req->match_sets[i].ssid.ssid))
9700                                 return -ENOBUFS;
9701                         nla_nest_end(msg, match);
9702                 }
9703                 nla_nest_end(msg, matches);
9704         }
9705
9706         scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
9707         if (!scan_plans)
9708                 return -ENOBUFS;
9709
9710         for (i = 0; i < req->n_scan_plans; i++) {
9711                 scan_plan = nla_nest_start(msg, i + 1);
9712                 if (!scan_plan)
9713                         return -ENOBUFS;
9714
9715                 if (!scan_plan ||
9716                     nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
9717                                 req->scan_plans[i].interval) ||
9718                     (req->scan_plans[i].iterations &&
9719                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
9720                                  req->scan_plans[i].iterations)))
9721                         return -ENOBUFS;
9722                 nla_nest_end(msg, scan_plan);
9723         }
9724         nla_nest_end(msg, scan_plans);
9725
9726         nla_nest_end(msg, nd);
9727
9728         return 0;
9729 }
9730
9731 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
9732 {
9733         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9734         struct sk_buff *msg;
9735         void *hdr;
9736         u32 size = NLMSG_DEFAULT_SIZE;
9737
9738         if (!rdev->wiphy.wowlan)
9739                 return -EOPNOTSUPP;
9740
9741         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
9742                 /* adjust size to have room for all the data */
9743                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
9744                         rdev->wiphy.wowlan_config->tcp->payload_len +
9745                         rdev->wiphy.wowlan_config->tcp->wake_len +
9746                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
9747         }
9748
9749         msg = nlmsg_new(size, GFP_KERNEL);
9750         if (!msg)
9751                 return -ENOMEM;
9752
9753         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9754                              NL80211_CMD_GET_WOWLAN);
9755         if (!hdr)
9756                 goto nla_put_failure;
9757
9758         if (rdev->wiphy.wowlan_config) {
9759                 struct nlattr *nl_wowlan;
9760
9761                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
9762                 if (!nl_wowlan)
9763                         goto nla_put_failure;
9764
9765                 if ((rdev->wiphy.wowlan_config->any &&
9766                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
9767                     (rdev->wiphy.wowlan_config->disconnect &&
9768                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
9769                     (rdev->wiphy.wowlan_config->magic_pkt &&
9770                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
9771                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
9772                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
9773                     (rdev->wiphy.wowlan_config->eap_identity_req &&
9774                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
9775                     (rdev->wiphy.wowlan_config->four_way_handshake &&
9776                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
9777                     (rdev->wiphy.wowlan_config->rfkill_release &&
9778                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
9779                         goto nla_put_failure;
9780
9781                 if (nl80211_send_wowlan_patterns(msg, rdev))
9782                         goto nla_put_failure;
9783
9784                 if (nl80211_send_wowlan_tcp(msg,
9785                                             rdev->wiphy.wowlan_config->tcp))
9786                         goto nla_put_failure;
9787
9788                 if (nl80211_send_wowlan_nd(
9789                             msg,
9790                             rdev->wiphy.wowlan_config->nd_config))
9791                         goto nla_put_failure;
9792
9793                 nla_nest_end(msg, nl_wowlan);
9794         }
9795
9796         genlmsg_end(msg, hdr);
9797         return genlmsg_reply(msg, info);
9798
9799 nla_put_failure:
9800         nlmsg_free(msg);
9801         return -ENOBUFS;
9802 }
9803
9804 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
9805                                     struct nlattr *attr,
9806                                     struct cfg80211_wowlan *trig)
9807 {
9808         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
9809         struct cfg80211_wowlan_tcp *cfg;
9810         struct nl80211_wowlan_tcp_data_token *tok = NULL;
9811         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
9812         u32 size;
9813         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
9814         int err, port;
9815
9816         if (!rdev->wiphy.wowlan->tcp)
9817                 return -EINVAL;
9818
9819         err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
9820                                nl80211_wowlan_tcp_policy);
9821         if (err)
9822                 return err;
9823
9824         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
9825             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
9826             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
9827             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
9828             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
9829             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
9830             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
9831             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
9832                 return -EINVAL;
9833
9834         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
9835         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
9836                 return -EINVAL;
9837
9838         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
9839                         rdev->wiphy.wowlan->tcp->data_interval_max ||
9840             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
9841                 return -EINVAL;
9842
9843         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
9844         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
9845                 return -EINVAL;
9846
9847         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
9848         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
9849                 return -EINVAL;
9850
9851         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
9852                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9853
9854                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9855                 tokens_size = tokln - sizeof(*tok);
9856
9857                 if (!tok->len || tokens_size % tok->len)
9858                         return -EINVAL;
9859                 if (!rdev->wiphy.wowlan->tcp->tok)
9860                         return -EINVAL;
9861                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9862                         return -EINVAL;
9863                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9864                         return -EINVAL;
9865                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9866                         return -EINVAL;
9867                 if (tok->offset + tok->len > data_size)
9868                         return -EINVAL;
9869         }
9870
9871         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
9872                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
9873                 if (!rdev->wiphy.wowlan->tcp->seq)
9874                         return -EINVAL;
9875                 if (seq->len == 0 || seq->len > 4)
9876                         return -EINVAL;
9877                 if (seq->len + seq->offset > data_size)
9878                         return -EINVAL;
9879         }
9880
9881         size = sizeof(*cfg);
9882         size += data_size;
9883         size += wake_size + wake_mask_size;
9884         size += tokens_size;
9885
9886         cfg = kzalloc(size, GFP_KERNEL);
9887         if (!cfg)
9888                 return -ENOMEM;
9889         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
9890         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
9891         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
9892                ETH_ALEN);
9893         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9894                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9895         else
9896                 port = 0;
9897 #ifdef CONFIG_INET
9898         /* allocate a socket and port for it and use it */
9899         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9900                             IPPROTO_TCP, &cfg->sock, 1);
9901         if (err) {
9902                 kfree(cfg);
9903                 return err;
9904         }
9905         if (inet_csk_get_port(cfg->sock->sk, port)) {
9906                 sock_release(cfg->sock);
9907                 kfree(cfg);
9908                 return -EADDRINUSE;
9909         }
9910         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9911 #else
9912         if (!port) {
9913                 kfree(cfg);
9914                 return -EINVAL;
9915         }
9916         cfg->src_port = port;
9917 #endif
9918
9919         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9920         cfg->payload_len = data_size;
9921         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9922         memcpy((void *)cfg->payload,
9923                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9924                data_size);
9925         if (seq)
9926                 cfg->payload_seq = *seq;
9927         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9928         cfg->wake_len = wake_size;
9929         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9930         memcpy((void *)cfg->wake_data,
9931                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9932                wake_size);
9933         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9934                          data_size + wake_size;
9935         memcpy((void *)cfg->wake_mask,
9936                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9937                wake_mask_size);
9938         if (tok) {
9939                 cfg->tokens_size = tokens_size;
9940                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9941         }
9942
9943         trig->tcp = cfg;
9944
9945         return 0;
9946 }
9947
9948 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9949                                    const struct wiphy_wowlan_support *wowlan,
9950                                    struct nlattr *attr,
9951                                    struct cfg80211_wowlan *trig)
9952 {
9953         struct nlattr **tb;
9954         int err;
9955
9956         tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9957         if (!tb)
9958                 return -ENOMEM;
9959
9960         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9961                 err = -EOPNOTSUPP;
9962                 goto out;
9963         }
9964
9965         err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy);
9966         if (err)
9967                 goto out;
9968
9969         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9970         err = PTR_ERR_OR_ZERO(trig->nd_config);
9971         if (err)
9972                 trig->nd_config = NULL;
9973
9974 out:
9975         kfree(tb);
9976         return err;
9977 }
9978
9979 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9980 {
9981         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9982         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9983         struct cfg80211_wowlan new_triggers = {};
9984         struct cfg80211_wowlan *ntrig;
9985         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9986         int err, i;
9987         bool prev_enabled = rdev->wiphy.wowlan_config;
9988         bool regular = false;
9989
9990         if (!wowlan)
9991                 return -EOPNOTSUPP;
9992
9993         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9994                 cfg80211_rdev_free_wowlan(rdev);
9995                 rdev->wiphy.wowlan_config = NULL;
9996                 goto set_wakeup;
9997         }
9998
9999         err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10000                                info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10001                                nl80211_wowlan_policy);
10002         if (err)
10003                 return err;
10004
10005         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10006                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10007                         return -EINVAL;
10008                 new_triggers.any = true;
10009         }
10010
10011         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10012                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10013                         return -EINVAL;
10014                 new_triggers.disconnect = true;
10015                 regular = true;
10016         }
10017
10018         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10019                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10020                         return -EINVAL;
10021                 new_triggers.magic_pkt = true;
10022                 regular = true;
10023         }
10024
10025         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10026                 return -EINVAL;
10027
10028         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10029                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10030                         return -EINVAL;
10031                 new_triggers.gtk_rekey_failure = true;
10032                 regular = true;
10033         }
10034
10035         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10036                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10037                         return -EINVAL;
10038                 new_triggers.eap_identity_req = true;
10039                 regular = true;
10040         }
10041
10042         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10043                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10044                         return -EINVAL;
10045                 new_triggers.four_way_handshake = true;
10046                 regular = true;
10047         }
10048
10049         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10050                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10051                         return -EINVAL;
10052                 new_triggers.rfkill_release = true;
10053                 regular = true;
10054         }
10055
10056         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10057                 struct nlattr *pat;
10058                 int n_patterns = 0;
10059                 int rem, pat_len, mask_len, pkt_offset;
10060                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10061
10062                 regular = true;
10063
10064                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10065                                     rem)
10066                         n_patterns++;
10067                 if (n_patterns > wowlan->n_patterns)
10068                         return -EINVAL;
10069
10070                 new_triggers.patterns = kcalloc(n_patterns,
10071                                                 sizeof(new_triggers.patterns[0]),
10072                                                 GFP_KERNEL);
10073                 if (!new_triggers.patterns)
10074                         return -ENOMEM;
10075
10076                 new_triggers.n_patterns = n_patterns;
10077                 i = 0;
10078
10079                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10080                                     rem) {
10081                         u8 *mask_pat;
10082
10083                         nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10084                                          NULL);
10085                         err = -EINVAL;
10086                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
10087                             !pat_tb[NL80211_PKTPAT_PATTERN])
10088                                 goto error;
10089                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10090                         mask_len = DIV_ROUND_UP(pat_len, 8);
10091                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10092                                 goto error;
10093                         if (pat_len > wowlan->pattern_max_len ||
10094                             pat_len < wowlan->pattern_min_len)
10095                                 goto error;
10096
10097                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
10098                                 pkt_offset = 0;
10099                         else
10100                                 pkt_offset = nla_get_u32(
10101                                         pat_tb[NL80211_PKTPAT_OFFSET]);
10102                         if (pkt_offset > wowlan->max_pkt_offset)
10103                                 goto error;
10104                         new_triggers.patterns[i].pkt_offset = pkt_offset;
10105
10106                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10107                         if (!mask_pat) {
10108                                 err = -ENOMEM;
10109                                 goto error;
10110                         }
10111                         new_triggers.patterns[i].mask = mask_pat;
10112                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10113                                mask_len);
10114                         mask_pat += mask_len;
10115                         new_triggers.patterns[i].pattern = mask_pat;
10116                         new_triggers.patterns[i].pattern_len = pat_len;
10117                         memcpy(mask_pat,
10118                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10119                                pat_len);
10120                         i++;
10121                 }
10122         }
10123
10124         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10125                 regular = true;
10126                 err = nl80211_parse_wowlan_tcp(
10127                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
10128                         &new_triggers);
10129                 if (err)
10130                         goto error;
10131         }
10132
10133         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
10134                 regular = true;
10135                 err = nl80211_parse_wowlan_nd(
10136                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
10137                         &new_triggers);
10138                 if (err)
10139                         goto error;
10140         }
10141
10142         /* The 'any' trigger means the device continues operating more or less
10143          * as in its normal operation mode and wakes up the host on most of the
10144          * normal interrupts (like packet RX, ...)
10145          * It therefore makes little sense to combine with the more constrained
10146          * wakeup trigger modes.
10147          */
10148         if (new_triggers.any && regular) {
10149                 err = -EINVAL;
10150                 goto error;
10151         }
10152
10153         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
10154         if (!ntrig) {
10155                 err = -ENOMEM;
10156                 goto error;
10157         }
10158         cfg80211_rdev_free_wowlan(rdev);
10159         rdev->wiphy.wowlan_config = ntrig;
10160
10161  set_wakeup:
10162         if (rdev->ops->set_wakeup &&
10163             prev_enabled != !!rdev->wiphy.wowlan_config)
10164                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
10165
10166         return 0;
10167  error:
10168         for (i = 0; i < new_triggers.n_patterns; i++)
10169                 kfree(new_triggers.patterns[i].mask);
10170         kfree(new_triggers.patterns);
10171         if (new_triggers.tcp && new_triggers.tcp->sock)
10172                 sock_release(new_triggers.tcp->sock);
10173         kfree(new_triggers.tcp);
10174         kfree(new_triggers.nd_config);
10175         return err;
10176 }
10177 #endif
10178
10179 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
10180                                        struct cfg80211_registered_device *rdev)
10181 {
10182         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
10183         int i, j, pat_len;
10184         struct cfg80211_coalesce_rules *rule;
10185
10186         if (!rdev->coalesce->n_rules)
10187                 return 0;
10188
10189         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
10190         if (!nl_rules)
10191                 return -ENOBUFS;
10192
10193         for (i = 0; i < rdev->coalesce->n_rules; i++) {
10194                 nl_rule = nla_nest_start(msg, i + 1);
10195                 if (!nl_rule)
10196                         return -ENOBUFS;
10197
10198                 rule = &rdev->coalesce->rules[i];
10199                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
10200                                 rule->delay))
10201                         return -ENOBUFS;
10202
10203                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
10204                                 rule->condition))
10205                         return -ENOBUFS;
10206
10207                 nl_pats = nla_nest_start(msg,
10208                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
10209                 if (!nl_pats)
10210                         return -ENOBUFS;
10211
10212                 for (j = 0; j < rule->n_patterns; j++) {
10213                         nl_pat = nla_nest_start(msg, j + 1);
10214                         if (!nl_pat)
10215                                 return -ENOBUFS;
10216                         pat_len = rule->patterns[j].pattern_len;
10217                         if (nla_put(msg, NL80211_PKTPAT_MASK,
10218                                     DIV_ROUND_UP(pat_len, 8),
10219                                     rule->patterns[j].mask) ||
10220                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10221                                     rule->patterns[j].pattern) ||
10222                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10223                                         rule->patterns[j].pkt_offset))
10224                                 return -ENOBUFS;
10225                         nla_nest_end(msg, nl_pat);
10226                 }
10227                 nla_nest_end(msg, nl_pats);
10228                 nla_nest_end(msg, nl_rule);
10229         }
10230         nla_nest_end(msg, nl_rules);
10231
10232         return 0;
10233 }
10234
10235 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
10236 {
10237         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10238         struct sk_buff *msg;
10239         void *hdr;
10240
10241         if (!rdev->wiphy.coalesce)
10242                 return -EOPNOTSUPP;
10243
10244         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10245         if (!msg)
10246                 return -ENOMEM;
10247
10248         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10249                              NL80211_CMD_GET_COALESCE);
10250         if (!hdr)
10251                 goto nla_put_failure;
10252
10253         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10254                 goto nla_put_failure;
10255
10256         genlmsg_end(msg, hdr);
10257         return genlmsg_reply(msg, info);
10258
10259 nla_put_failure:
10260         nlmsg_free(msg);
10261         return -ENOBUFS;
10262 }
10263
10264 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10265 {
10266         struct cfg80211_coalesce *coalesce = rdev->coalesce;
10267         int i, j;
10268         struct cfg80211_coalesce_rules *rule;
10269
10270         if (!coalesce)
10271                 return;
10272
10273         for (i = 0; i < coalesce->n_rules; i++) {
10274                 rule = &coalesce->rules[i];
10275                 for (j = 0; j < rule->n_patterns; j++)
10276                         kfree(rule->patterns[j].mask);
10277                 kfree(rule->patterns);
10278         }
10279         kfree(coalesce->rules);
10280         kfree(coalesce);
10281         rdev->coalesce = NULL;
10282 }
10283
10284 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10285                                        struct nlattr *rule,
10286                                        struct cfg80211_coalesce_rules *new_rule)
10287 {
10288         int err, i;
10289         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10290         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10291         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10292         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10293
10294         err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
10295                                nl80211_coalesce_policy);
10296         if (err)
10297                 return err;
10298
10299         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10300                 new_rule->delay =
10301                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10302         if (new_rule->delay > coalesce->max_delay)
10303                 return -EINVAL;
10304
10305         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10306                 new_rule->condition =
10307                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10308         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10309             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10310                 return -EINVAL;
10311
10312         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10313                 return -EINVAL;
10314
10315         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10316                             rem)
10317                 n_patterns++;
10318         if (n_patterns > coalesce->n_patterns)
10319                 return -EINVAL;
10320
10321         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10322                                      GFP_KERNEL);
10323         if (!new_rule->patterns)
10324                 return -ENOMEM;
10325
10326         new_rule->n_patterns = n_patterns;
10327         i = 0;
10328
10329         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10330                             rem) {
10331                 u8 *mask_pat;
10332
10333                 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat, NULL);
10334                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10335                     !pat_tb[NL80211_PKTPAT_PATTERN])
10336                         return -EINVAL;
10337                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10338                 mask_len = DIV_ROUND_UP(pat_len, 8);
10339                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10340                         return -EINVAL;
10341                 if (pat_len > coalesce->pattern_max_len ||
10342                     pat_len < coalesce->pattern_min_len)
10343                         return -EINVAL;
10344
10345                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10346                         pkt_offset = 0;
10347                 else
10348                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10349                 if (pkt_offset > coalesce->max_pkt_offset)
10350                         return -EINVAL;
10351                 new_rule->patterns[i].pkt_offset = pkt_offset;
10352
10353                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10354                 if (!mask_pat)
10355                         return -ENOMEM;
10356
10357                 new_rule->patterns[i].mask = mask_pat;
10358                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10359                        mask_len);
10360
10361                 mask_pat += mask_len;
10362                 new_rule->patterns[i].pattern = mask_pat;
10363                 new_rule->patterns[i].pattern_len = pat_len;
10364                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10365                        pat_len);
10366                 i++;
10367         }
10368
10369         return 0;
10370 }
10371
10372 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10373 {
10374         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10375         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10376         struct cfg80211_coalesce new_coalesce = {};
10377         struct cfg80211_coalesce *n_coalesce;
10378         int err, rem_rule, n_rules = 0, i, j;
10379         struct nlattr *rule;
10380         struct cfg80211_coalesce_rules *tmp_rule;
10381
10382         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10383                 return -EOPNOTSUPP;
10384
10385         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10386                 cfg80211_rdev_free_coalesce(rdev);
10387                 rdev_set_coalesce(rdev, NULL);
10388                 return 0;
10389         }
10390
10391         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10392                             rem_rule)
10393                 n_rules++;
10394         if (n_rules > coalesce->n_rules)
10395                 return -EINVAL;
10396
10397         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10398                                      GFP_KERNEL);
10399         if (!new_coalesce.rules)
10400                 return -ENOMEM;
10401
10402         new_coalesce.n_rules = n_rules;
10403         i = 0;
10404
10405         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10406                             rem_rule) {
10407                 err = nl80211_parse_coalesce_rule(rdev, rule,
10408                                                   &new_coalesce.rules[i]);
10409                 if (err)
10410                         goto error;
10411
10412                 i++;
10413         }
10414
10415         err = rdev_set_coalesce(rdev, &new_coalesce);
10416         if (err)
10417                 goto error;
10418
10419         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10420         if (!n_coalesce) {
10421                 err = -ENOMEM;
10422                 goto error;
10423         }
10424         cfg80211_rdev_free_coalesce(rdev);
10425         rdev->coalesce = n_coalesce;
10426
10427         return 0;
10428 error:
10429         for (i = 0; i < new_coalesce.n_rules; i++) {
10430                 tmp_rule = &new_coalesce.rules[i];
10431                 for (j = 0; j < tmp_rule->n_patterns; j++)
10432                         kfree(tmp_rule->patterns[j].mask);
10433                 kfree(tmp_rule->patterns);
10434         }
10435         kfree(new_coalesce.rules);
10436
10437         return err;
10438 }
10439
10440 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10441 {
10442         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10443         struct net_device *dev = info->user_ptr[1];
10444         struct wireless_dev *wdev = dev->ieee80211_ptr;
10445         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10446         struct cfg80211_gtk_rekey_data rekey_data;
10447         int err;
10448
10449         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10450                 return -EINVAL;
10451
10452         err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
10453                                info->attrs[NL80211_ATTR_REKEY_DATA],
10454                                nl80211_rekey_policy);
10455         if (err)
10456                 return err;
10457
10458         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10459                 return -ERANGE;
10460         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10461                 return -ERANGE;
10462         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10463                 return -ERANGE;
10464
10465         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10466         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
10467         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
10468
10469         wdev_lock(wdev);
10470         if (!wdev->current_bss) {
10471                 err = -ENOTCONN;
10472                 goto out;
10473         }
10474
10475         if (!rdev->ops->set_rekey_data) {
10476                 err = -EOPNOTSUPP;
10477                 goto out;
10478         }
10479
10480         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
10481  out:
10482         wdev_unlock(wdev);
10483         return err;
10484 }
10485
10486 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
10487                                              struct genl_info *info)
10488 {
10489         struct net_device *dev = info->user_ptr[1];
10490         struct wireless_dev *wdev = dev->ieee80211_ptr;
10491
10492         if (wdev->iftype != NL80211_IFTYPE_AP &&
10493             wdev->iftype != NL80211_IFTYPE_P2P_GO)
10494                 return -EINVAL;
10495
10496         if (wdev->ap_unexpected_nlportid)
10497                 return -EBUSY;
10498
10499         wdev->ap_unexpected_nlportid = info->snd_portid;
10500         return 0;
10501 }
10502
10503 static int nl80211_probe_client(struct sk_buff *skb,
10504                                 struct genl_info *info)
10505 {
10506         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10507         struct net_device *dev = info->user_ptr[1];
10508         struct wireless_dev *wdev = dev->ieee80211_ptr;
10509         struct sk_buff *msg;
10510         void *hdr;
10511         const u8 *addr;
10512         u64 cookie;
10513         int err;
10514
10515         if (wdev->iftype != NL80211_IFTYPE_AP &&
10516             wdev->iftype != NL80211_IFTYPE_P2P_GO)
10517                 return -EOPNOTSUPP;
10518
10519         if (!info->attrs[NL80211_ATTR_MAC])
10520                 return -EINVAL;
10521
10522         if (!rdev->ops->probe_client)
10523                 return -EOPNOTSUPP;
10524
10525         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10526         if (!msg)
10527                 return -ENOMEM;
10528
10529         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10530                              NL80211_CMD_PROBE_CLIENT);
10531         if (!hdr) {
10532                 err = -ENOBUFS;
10533                 goto free_msg;
10534         }
10535
10536         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10537
10538         err = rdev_probe_client(rdev, dev, addr, &cookie);
10539         if (err)
10540                 goto free_msg;
10541
10542         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10543                               NL80211_ATTR_PAD))
10544                 goto nla_put_failure;
10545
10546         genlmsg_end(msg, hdr);
10547
10548         return genlmsg_reply(msg, info);
10549
10550  nla_put_failure:
10551         err = -ENOBUFS;
10552  free_msg:
10553         nlmsg_free(msg);
10554         return err;
10555 }
10556
10557 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
10558 {
10559         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10560         struct cfg80211_beacon_registration *reg, *nreg;
10561         int rv;
10562
10563         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
10564                 return -EOPNOTSUPP;
10565
10566         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
10567         if (!nreg)
10568                 return -ENOMEM;
10569
10570         /* First, check if already registered. */
10571         spin_lock_bh(&rdev->beacon_registrations_lock);
10572         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10573                 if (reg->nlportid == info->snd_portid) {
10574                         rv = -EALREADY;
10575                         goto out_err;
10576                 }
10577         }
10578         /* Add it to the list */
10579         nreg->nlportid = info->snd_portid;
10580         list_add(&nreg->list, &rdev->beacon_registrations);
10581
10582         spin_unlock_bh(&rdev->beacon_registrations_lock);
10583
10584         return 0;
10585 out_err:
10586         spin_unlock_bh(&rdev->beacon_registrations_lock);
10587         kfree(nreg);
10588         return rv;
10589 }
10590
10591 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
10592 {
10593         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10594         struct wireless_dev *wdev = info->user_ptr[1];
10595         int err;
10596
10597         if (!rdev->ops->start_p2p_device)
10598                 return -EOPNOTSUPP;
10599
10600         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10601                 return -EOPNOTSUPP;
10602
10603         if (wdev_running(wdev))
10604                 return 0;
10605
10606         if (rfkill_blocked(rdev->rfkill))
10607                 return -ERFKILL;
10608
10609         err = rdev_start_p2p_device(rdev, wdev);
10610         if (err)
10611                 return err;
10612
10613         wdev->is_running = true;
10614         rdev->opencount++;
10615
10616         return 0;
10617 }
10618
10619 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
10620 {
10621         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10622         struct wireless_dev *wdev = info->user_ptr[1];
10623
10624         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10625                 return -EOPNOTSUPP;
10626
10627         if (!rdev->ops->stop_p2p_device)
10628                 return -EOPNOTSUPP;
10629
10630         cfg80211_stop_p2p_device(rdev, wdev);
10631
10632         return 0;
10633 }
10634
10635 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
10636 {
10637         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10638         struct wireless_dev *wdev = info->user_ptr[1];
10639         struct cfg80211_nan_conf conf = {};
10640         int err;
10641
10642         if (wdev->iftype != NL80211_IFTYPE_NAN)
10643                 return -EOPNOTSUPP;
10644
10645         if (wdev_running(wdev))
10646                 return -EEXIST;
10647
10648         if (rfkill_blocked(rdev->rfkill))
10649                 return -ERFKILL;
10650
10651         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
10652                 return -EINVAL;
10653
10654         if (!info->attrs[NL80211_ATTR_NAN_DUAL])
10655                 return -EINVAL;
10656
10657         conf.master_pref =
10658                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
10659         if (!conf.master_pref)
10660                 return -EINVAL;
10661
10662         conf.dual = nla_get_u8(info->attrs[NL80211_ATTR_NAN_DUAL]);
10663
10664         err = rdev_start_nan(rdev, wdev, &conf);
10665         if (err)
10666                 return err;
10667
10668         wdev->is_running = true;
10669         rdev->opencount++;
10670
10671         return 0;
10672 }
10673
10674 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
10675 {
10676         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10677         struct wireless_dev *wdev = info->user_ptr[1];
10678
10679         if (wdev->iftype != NL80211_IFTYPE_NAN)
10680                 return -EOPNOTSUPP;
10681
10682         cfg80211_stop_nan(rdev, wdev);
10683
10684         return 0;
10685 }
10686
10687 static int validate_nan_filter(struct nlattr *filter_attr)
10688 {
10689         struct nlattr *attr;
10690         int len = 0, n_entries = 0, rem;
10691
10692         nla_for_each_nested(attr, filter_attr, rem) {
10693                 len += nla_len(attr);
10694                 n_entries++;
10695         }
10696
10697         if (len >= U8_MAX)
10698                 return -EINVAL;
10699
10700         return n_entries;
10701 }
10702
10703 static int handle_nan_filter(struct nlattr *attr_filter,
10704                              struct cfg80211_nan_func *func,
10705                              bool tx)
10706 {
10707         struct nlattr *attr;
10708         int n_entries, rem, i;
10709         struct cfg80211_nan_func_filter *filter;
10710
10711         n_entries = validate_nan_filter(attr_filter);
10712         if (n_entries < 0)
10713                 return n_entries;
10714
10715         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
10716
10717         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
10718         if (!filter)
10719                 return -ENOMEM;
10720
10721         i = 0;
10722         nla_for_each_nested(attr, attr_filter, rem) {
10723                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
10724                 filter[i].len = nla_len(attr);
10725                 i++;
10726         }
10727         if (tx) {
10728                 func->num_tx_filters = n_entries;
10729                 func->tx_filters = filter;
10730         } else {
10731                 func->num_rx_filters = n_entries;
10732                 func->rx_filters = filter;
10733         }
10734
10735         return 0;
10736 }
10737
10738 static int nl80211_nan_add_func(struct sk_buff *skb,
10739                                 struct genl_info *info)
10740 {
10741         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10742         struct wireless_dev *wdev = info->user_ptr[1];
10743         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
10744         struct cfg80211_nan_func *func;
10745         struct sk_buff *msg = NULL;
10746         void *hdr = NULL;
10747         int err = 0;
10748
10749         if (wdev->iftype != NL80211_IFTYPE_NAN)
10750                 return -EOPNOTSUPP;
10751
10752         if (!wdev_running(wdev))
10753                 return -ENOTCONN;
10754
10755         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
10756                 return -EINVAL;
10757
10758         if (wdev->owner_nlportid &&
10759             wdev->owner_nlportid != info->snd_portid)
10760                 return -ENOTCONN;
10761
10762         err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
10763                                info->attrs[NL80211_ATTR_NAN_FUNC],
10764                                nl80211_nan_func_policy);
10765         if (err)
10766                 return err;
10767
10768         func = kzalloc(sizeof(*func), GFP_KERNEL);
10769         if (!func)
10770                 return -ENOMEM;
10771
10772         func->cookie = wdev->wiphy->cookie_counter++;
10773
10774         if (!tb[NL80211_NAN_FUNC_TYPE] ||
10775             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
10776                 err = -EINVAL;
10777                 goto out;
10778         }
10779
10780
10781         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
10782
10783         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
10784                 err = -EINVAL;
10785                 goto out;
10786         }
10787
10788         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
10789                sizeof(func->service_id));
10790
10791         func->close_range =
10792                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
10793
10794         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
10795                 func->serv_spec_info_len =
10796                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
10797                 func->serv_spec_info =
10798                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
10799                                 func->serv_spec_info_len,
10800                                 GFP_KERNEL);
10801                 if (!func->serv_spec_info) {
10802                         err = -ENOMEM;
10803                         goto out;
10804                 }
10805         }
10806
10807         if (tb[NL80211_NAN_FUNC_TTL])
10808                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
10809
10810         switch (func->type) {
10811         case NL80211_NAN_FUNC_PUBLISH:
10812                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
10813                         err = -EINVAL;
10814                         goto out;
10815                 }
10816
10817                 func->publish_type =
10818                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
10819                 func->publish_bcast =
10820                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
10821
10822                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
10823                         func->publish_bcast) {
10824                         err = -EINVAL;
10825                         goto out;
10826                 }
10827                 break;
10828         case NL80211_NAN_FUNC_SUBSCRIBE:
10829                 func->subscribe_active =
10830                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
10831                 break;
10832         case NL80211_NAN_FUNC_FOLLOW_UP:
10833                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
10834                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]) {
10835                         err = -EINVAL;
10836                         goto out;
10837                 }
10838
10839                 func->followup_id =
10840                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
10841                 func->followup_reqid =
10842                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
10843                 memcpy(func->followup_dest.addr,
10844                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
10845                        sizeof(func->followup_dest.addr));
10846                 if (func->ttl) {
10847                         err = -EINVAL;
10848                         goto out;
10849                 }
10850                 break;
10851         default:
10852                 err = -EINVAL;
10853                 goto out;
10854         }
10855
10856         if (tb[NL80211_NAN_FUNC_SRF]) {
10857                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
10858
10859                 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
10860                                        tb[NL80211_NAN_FUNC_SRF],
10861                                        nl80211_nan_srf_policy);
10862                 if (err)
10863                         goto out;
10864
10865                 func->srf_include =
10866                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
10867
10868                 if (srf_tb[NL80211_NAN_SRF_BF]) {
10869                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
10870                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
10871                                 err = -EINVAL;
10872                                 goto out;
10873                         }
10874
10875                         func->srf_bf_len =
10876                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
10877                         func->srf_bf =
10878                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
10879                                         func->srf_bf_len, GFP_KERNEL);
10880                         if (!func->srf_bf) {
10881                                 err = -ENOMEM;
10882                                 goto out;
10883                         }
10884
10885                         func->srf_bf_idx =
10886                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
10887                 } else {
10888                         struct nlattr *attr, *mac_attr =
10889                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
10890                         int n_entries, rem, i = 0;
10891
10892                         if (!mac_attr) {
10893                                 err = -EINVAL;
10894                                 goto out;
10895                         }
10896
10897                         n_entries = validate_acl_mac_addrs(mac_attr);
10898                         if (n_entries <= 0) {
10899                                 err = -EINVAL;
10900                                 goto out;
10901                         }
10902
10903                         func->srf_num_macs = n_entries;
10904                         func->srf_macs =
10905                                 kzalloc(sizeof(*func->srf_macs) * n_entries,
10906                                         GFP_KERNEL);
10907                         if (!func->srf_macs) {
10908                                 err = -ENOMEM;
10909                                 goto out;
10910                         }
10911
10912                         nla_for_each_nested(attr, mac_attr, rem)
10913                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
10914                                        sizeof(*func->srf_macs));
10915                 }
10916         }
10917
10918         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
10919                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
10920                                         func, true);
10921                 if (err)
10922                         goto out;
10923         }
10924
10925         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
10926                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
10927                                         func, false);
10928                 if (err)
10929                         goto out;
10930         }
10931
10932         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10933         if (!msg) {
10934                 err = -ENOMEM;
10935                 goto out;
10936         }
10937
10938         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10939                              NL80211_CMD_ADD_NAN_FUNCTION);
10940         /* This can't really happen - we just allocated 4KB */
10941         if (WARN_ON(!hdr)) {
10942                 err = -ENOMEM;
10943                 goto out;
10944         }
10945
10946         err = rdev_add_nan_func(rdev, wdev, func);
10947 out:
10948         if (err < 0) {
10949                 cfg80211_free_nan_func(func);
10950                 nlmsg_free(msg);
10951                 return err;
10952         }
10953
10954         /* propagate the instance id and cookie to userspace  */
10955         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
10956                               NL80211_ATTR_PAD))
10957                 goto nla_put_failure;
10958
10959         func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
10960         if (!func_attr)
10961                 goto nla_put_failure;
10962
10963         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
10964                        func->instance_id))
10965                 goto nla_put_failure;
10966
10967         nla_nest_end(msg, func_attr);
10968
10969         genlmsg_end(msg, hdr);
10970         return genlmsg_reply(msg, info);
10971
10972 nla_put_failure:
10973         nlmsg_free(msg);
10974         return -ENOBUFS;
10975 }
10976
10977 static int nl80211_nan_del_func(struct sk_buff *skb,
10978                                struct genl_info *info)
10979 {
10980         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10981         struct wireless_dev *wdev = info->user_ptr[1];
10982         u64 cookie;
10983
10984         if (wdev->iftype != NL80211_IFTYPE_NAN)
10985                 return -EOPNOTSUPP;
10986
10987         if (!wdev_running(wdev))
10988                 return -ENOTCONN;
10989
10990         if (!info->attrs[NL80211_ATTR_COOKIE])
10991                 return -EINVAL;
10992
10993         if (wdev->owner_nlportid &&
10994             wdev->owner_nlportid != info->snd_portid)
10995                 return -ENOTCONN;
10996
10997         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10998
10999         rdev_del_nan_func(rdev, wdev, cookie);
11000
11001         return 0;
11002 }
11003
11004 static int nl80211_nan_change_config(struct sk_buff *skb,
11005                                      struct genl_info *info)
11006 {
11007         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11008         struct wireless_dev *wdev = info->user_ptr[1];
11009         struct cfg80211_nan_conf conf = {};
11010         u32 changed = 0;
11011
11012         if (wdev->iftype != NL80211_IFTYPE_NAN)
11013                 return -EOPNOTSUPP;
11014
11015         if (!wdev_running(wdev))
11016                 return -ENOTCONN;
11017
11018         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11019                 conf.master_pref =
11020                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11021                 if (conf.master_pref <= 1 || conf.master_pref == 255)
11022                         return -EINVAL;
11023
11024                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11025         }
11026
11027         if (info->attrs[NL80211_ATTR_NAN_DUAL]) {
11028                 conf.dual = nla_get_u8(info->attrs[NL80211_ATTR_NAN_DUAL]);
11029                 changed |= CFG80211_NAN_CONF_CHANGED_DUAL;
11030         }
11031
11032         if (!changed)
11033                 return -EINVAL;
11034
11035         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11036 }
11037
11038 void cfg80211_nan_match(struct wireless_dev *wdev,
11039                         struct cfg80211_nan_match_params *match, gfp_t gfp)
11040 {
11041         struct wiphy *wiphy = wdev->wiphy;
11042         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11043         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11044         struct sk_buff *msg;
11045         void *hdr;
11046
11047         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11048                 return;
11049
11050         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11051         if (!msg)
11052                 return;
11053
11054         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11055         if (!hdr) {
11056                 nlmsg_free(msg);
11057                 return;
11058         }
11059
11060         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11061             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11062                                          wdev->netdev->ifindex)) ||
11063             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11064                               NL80211_ATTR_PAD))
11065                 goto nla_put_failure;
11066
11067         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11068                               NL80211_ATTR_PAD) ||
11069             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11070                 goto nla_put_failure;
11071
11072         match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11073         if (!match_attr)
11074                 goto nla_put_failure;
11075
11076         local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11077         if (!local_func_attr)
11078                 goto nla_put_failure;
11079
11080         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11081                 goto nla_put_failure;
11082
11083         nla_nest_end(msg, local_func_attr);
11084
11085         peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11086         if (!peer_func_attr)
11087                 goto nla_put_failure;
11088
11089         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11090             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11091                 goto nla_put_failure;
11092
11093         if (match->info && match->info_len &&
11094             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11095                     match->info))
11096                 goto nla_put_failure;
11097
11098         nla_nest_end(msg, peer_func_attr);
11099         nla_nest_end(msg, match_attr);
11100         genlmsg_end(msg, hdr);
11101
11102         if (!wdev->owner_nlportid)
11103                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11104                                         msg, 0, NL80211_MCGRP_NAN, gfp);
11105         else
11106                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11107                                 wdev->owner_nlportid);
11108
11109         return;
11110
11111 nla_put_failure:
11112         nlmsg_free(msg);
11113 }
11114 EXPORT_SYMBOL(cfg80211_nan_match);
11115
11116 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
11117                                   u8 inst_id,
11118                                   enum nl80211_nan_func_term_reason reason,
11119                                   u64 cookie, gfp_t gfp)
11120 {
11121         struct wiphy *wiphy = wdev->wiphy;
11122         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11123         struct sk_buff *msg;
11124         struct nlattr *func_attr;
11125         void *hdr;
11126
11127         if (WARN_ON(!inst_id))
11128                 return;
11129
11130         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11131         if (!msg)
11132                 return;
11133
11134         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
11135         if (!hdr) {
11136                 nlmsg_free(msg);
11137                 return;
11138         }
11139
11140         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11141             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11142                                          wdev->netdev->ifindex)) ||
11143             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11144                               NL80211_ATTR_PAD))
11145                 goto nla_put_failure;
11146
11147         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11148                               NL80211_ATTR_PAD))
11149                 goto nla_put_failure;
11150
11151         func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11152         if (!func_attr)
11153                 goto nla_put_failure;
11154
11155         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
11156             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
11157                 goto nla_put_failure;
11158
11159         nla_nest_end(msg, func_attr);
11160         genlmsg_end(msg, hdr);
11161
11162         if (!wdev->owner_nlportid)
11163                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11164                                         msg, 0, NL80211_MCGRP_NAN, gfp);
11165         else
11166                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11167                                 wdev->owner_nlportid);
11168
11169         return;
11170
11171 nla_put_failure:
11172         nlmsg_free(msg);
11173 }
11174 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
11175
11176 static int nl80211_get_protocol_features(struct sk_buff *skb,
11177                                          struct genl_info *info)
11178 {
11179         void *hdr;
11180         struct sk_buff *msg;
11181
11182         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11183         if (!msg)
11184                 return -ENOMEM;
11185
11186         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11187                              NL80211_CMD_GET_PROTOCOL_FEATURES);
11188         if (!hdr)
11189                 goto nla_put_failure;
11190
11191         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
11192                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
11193                 goto nla_put_failure;
11194
11195         genlmsg_end(msg, hdr);
11196         return genlmsg_reply(msg, info);
11197
11198  nla_put_failure:
11199         kfree_skb(msg);
11200         return -ENOBUFS;
11201 }
11202
11203 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
11204 {
11205         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11206         struct cfg80211_update_ft_ies_params ft_params;
11207         struct net_device *dev = info->user_ptr[1];
11208
11209         if (!rdev->ops->update_ft_ies)
11210                 return -EOPNOTSUPP;
11211
11212         if (!info->attrs[NL80211_ATTR_MDID] ||
11213             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
11214                 return -EINVAL;
11215
11216         memset(&ft_params, 0, sizeof(ft_params));
11217         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
11218         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11219         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11220
11221         return rdev_update_ft_ies(rdev, dev, &ft_params);
11222 }
11223
11224 static int nl80211_crit_protocol_start(struct sk_buff *skb,
11225                                        struct genl_info *info)
11226 {
11227         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11228         struct wireless_dev *wdev = info->user_ptr[1];
11229         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
11230         u16 duration;
11231         int ret;
11232
11233         if (!rdev->ops->crit_proto_start)
11234                 return -EOPNOTSUPP;
11235
11236         if (WARN_ON(!rdev->ops->crit_proto_stop))
11237                 return -EINVAL;
11238
11239         if (rdev->crit_proto_nlportid)
11240                 return -EBUSY;
11241
11242         /* determine protocol if provided */
11243         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
11244                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
11245
11246         if (proto >= NUM_NL80211_CRIT_PROTO)
11247                 return -EINVAL;
11248
11249         /* timeout must be provided */
11250         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
11251                 return -EINVAL;
11252
11253         duration =
11254                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
11255
11256         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
11257                 return -ERANGE;
11258
11259         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
11260         if (!ret)
11261                 rdev->crit_proto_nlportid = info->snd_portid;
11262
11263         return ret;
11264 }
11265
11266 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
11267                                       struct genl_info *info)
11268 {
11269         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11270         struct wireless_dev *wdev = info->user_ptr[1];
11271
11272         if (!rdev->ops->crit_proto_stop)
11273                 return -EOPNOTSUPP;
11274
11275         if (rdev->crit_proto_nlportid) {
11276                 rdev->crit_proto_nlportid = 0;
11277                 rdev_crit_proto_stop(rdev, wdev);
11278         }
11279         return 0;
11280 }
11281
11282 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
11283 {
11284         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11285         struct wireless_dev *wdev =
11286                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
11287         int i, err;
11288         u32 vid, subcmd;
11289
11290         if (!rdev->wiphy.vendor_commands)
11291                 return -EOPNOTSUPP;
11292
11293         if (IS_ERR(wdev)) {
11294                 err = PTR_ERR(wdev);
11295                 if (err != -EINVAL)
11296                         return err;
11297                 wdev = NULL;
11298         } else if (wdev->wiphy != &rdev->wiphy) {
11299                 return -EINVAL;
11300         }
11301
11302         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
11303             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
11304                 return -EINVAL;
11305
11306         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
11307         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
11308         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
11309                 const struct wiphy_vendor_command *vcmd;
11310                 void *data = NULL;
11311                 int len = 0;
11312
11313                 vcmd = &rdev->wiphy.vendor_commands[i];
11314
11315                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11316                         continue;
11317
11318                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11319                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11320                         if (!wdev)
11321                                 return -EINVAL;
11322                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11323                             !wdev->netdev)
11324                                 return -EINVAL;
11325
11326                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11327                                 if (!wdev_running(wdev))
11328                                         return -ENETDOWN;
11329                         }
11330
11331                         if (!vcmd->doit)
11332                                 return -EOPNOTSUPP;
11333                 } else {
11334                         wdev = NULL;
11335                 }
11336
11337                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
11338                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11339                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11340                 }
11341
11342                 rdev->cur_cmd_info = info;
11343                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
11344                                                           data, len);
11345                 rdev->cur_cmd_info = NULL;
11346                 return err;
11347         }
11348
11349         return -EOPNOTSUPP;
11350 }
11351
11352 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
11353                                        struct netlink_callback *cb,
11354                                        struct cfg80211_registered_device **rdev,
11355                                        struct wireless_dev **wdev)
11356 {
11357         struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
11358         u32 vid, subcmd;
11359         unsigned int i;
11360         int vcmd_idx = -1;
11361         int err;
11362         void *data = NULL;
11363         unsigned int data_len = 0;
11364
11365         rtnl_lock();
11366
11367         if (cb->args[0]) {
11368                 /* subtract the 1 again here */
11369                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
11370                 struct wireless_dev *tmp;
11371
11372                 if (!wiphy) {
11373                         err = -ENODEV;
11374                         goto out_unlock;
11375                 }
11376                 *rdev = wiphy_to_rdev(wiphy);
11377                 *wdev = NULL;
11378
11379                 if (cb->args[1]) {
11380                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
11381                                 if (tmp->identifier == cb->args[1] - 1) {
11382                                         *wdev = tmp;
11383                                         break;
11384                                 }
11385                         }
11386                 }
11387
11388                 /* keep rtnl locked in successful case */
11389                 return 0;
11390         }
11391
11392         err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
11393                           attrbuf, nl80211_fam.maxattr, nl80211_policy);
11394         if (err)
11395                 goto out_unlock;
11396
11397         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
11398             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
11399                 err = -EINVAL;
11400                 goto out_unlock;
11401         }
11402
11403         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
11404         if (IS_ERR(*wdev))
11405                 *wdev = NULL;
11406
11407         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11408         if (IS_ERR(*rdev)) {
11409                 err = PTR_ERR(*rdev);
11410                 goto out_unlock;
11411         }
11412
11413         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
11414         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
11415
11416         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
11417                 const struct wiphy_vendor_command *vcmd;
11418
11419                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
11420
11421                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11422                         continue;
11423
11424                 if (!vcmd->dumpit) {
11425                         err = -EOPNOTSUPP;
11426                         goto out_unlock;
11427                 }
11428
11429                 vcmd_idx = i;
11430                 break;
11431         }
11432
11433         if (vcmd_idx < 0) {
11434                 err = -EOPNOTSUPP;
11435                 goto out_unlock;
11436         }
11437
11438         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
11439                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11440                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11441         }
11442
11443         /* 0 is the first index - add 1 to parse only once */
11444         cb->args[0] = (*rdev)->wiphy_idx + 1;
11445         /* add 1 to know if it was NULL */
11446         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
11447         cb->args[2] = vcmd_idx;
11448         cb->args[3] = (unsigned long)data;
11449         cb->args[4] = data_len;
11450
11451         /* keep rtnl locked in successful case */
11452         return 0;
11453  out_unlock:
11454         rtnl_unlock();
11455         return err;
11456 }
11457
11458 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
11459                                    struct netlink_callback *cb)
11460 {
11461         struct cfg80211_registered_device *rdev;
11462         struct wireless_dev *wdev;
11463         unsigned int vcmd_idx;
11464         const struct wiphy_vendor_command *vcmd;
11465         void *data;
11466         int data_len;
11467         int err;
11468         struct nlattr *vendor_data;
11469
11470         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
11471         if (err)
11472                 return err;
11473
11474         vcmd_idx = cb->args[2];
11475         data = (void *)cb->args[3];
11476         data_len = cb->args[4];
11477         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
11478
11479         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11480                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11481                 if (!wdev)
11482                         return -EINVAL;
11483                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11484                     !wdev->netdev)
11485                         return -EINVAL;
11486
11487                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11488                         if (!wdev_running(wdev))
11489                                 return -ENETDOWN;
11490                 }
11491         }
11492
11493         while (1) {
11494                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11495                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
11496                                            NL80211_CMD_VENDOR);
11497                 if (!hdr)
11498                         break;
11499
11500                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11501                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11502                                                wdev_id(wdev),
11503                                                NL80211_ATTR_PAD))) {
11504                         genlmsg_cancel(skb, hdr);
11505                         break;
11506                 }
11507
11508                 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
11509                 if (!vendor_data) {
11510                         genlmsg_cancel(skb, hdr);
11511                         break;
11512                 }
11513
11514                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
11515                                    (unsigned long *)&cb->args[5]);
11516                 nla_nest_end(skb, vendor_data);
11517
11518                 if (err == -ENOBUFS || err == -ENOENT) {
11519                         genlmsg_cancel(skb, hdr);
11520                         break;
11521                 } else if (err) {
11522                         genlmsg_cancel(skb, hdr);
11523                         goto out;
11524                 }
11525
11526                 genlmsg_end(skb, hdr);
11527         }
11528
11529         err = skb->len;
11530  out:
11531         rtnl_unlock();
11532         return err;
11533 }
11534
11535 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
11536                                            enum nl80211_commands cmd,
11537                                            enum nl80211_attrs attr,
11538                                            int approxlen)
11539 {
11540         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11541
11542         if (WARN_ON(!rdev->cur_cmd_info))
11543                 return NULL;
11544
11545         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
11546                                            rdev->cur_cmd_info->snd_portid,
11547                                            rdev->cur_cmd_info->snd_seq,
11548                                            cmd, attr, NULL, GFP_KERNEL);
11549 }
11550 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
11551
11552 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
11553 {
11554         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11555         void *hdr = ((void **)skb->cb)[1];
11556         struct nlattr *data = ((void **)skb->cb)[2];
11557
11558         /* clear CB data for netlink core to own from now on */
11559         memset(skb->cb, 0, sizeof(skb->cb));
11560
11561         if (WARN_ON(!rdev->cur_cmd_info)) {
11562                 kfree_skb(skb);
11563                 return -EINVAL;
11564         }
11565
11566         nla_nest_end(skb, data);
11567         genlmsg_end(skb, hdr);
11568         return genlmsg_reply(skb, rdev->cur_cmd_info);
11569 }
11570 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
11571
11572 static int nl80211_set_qos_map(struct sk_buff *skb,
11573                                struct genl_info *info)
11574 {
11575         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11576         struct cfg80211_qos_map *qos_map = NULL;
11577         struct net_device *dev = info->user_ptr[1];
11578         u8 *pos, len, num_des, des_len, des;
11579         int ret;
11580
11581         if (!rdev->ops->set_qos_map)
11582                 return -EOPNOTSUPP;
11583
11584         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
11585                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
11586                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
11587
11588                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
11589                     len > IEEE80211_QOS_MAP_LEN_MAX)
11590                         return -EINVAL;
11591
11592                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
11593                 if (!qos_map)
11594                         return -ENOMEM;
11595
11596                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
11597                 if (num_des) {
11598                         des_len = num_des *
11599                                 sizeof(struct cfg80211_dscp_exception);
11600                         memcpy(qos_map->dscp_exception, pos, des_len);
11601                         qos_map->num_des = num_des;
11602                         for (des = 0; des < num_des; des++) {
11603                                 if (qos_map->dscp_exception[des].up > 7) {
11604                                         kfree(qos_map);
11605                                         return -EINVAL;
11606                                 }
11607                         }
11608                         pos += des_len;
11609                 }
11610                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
11611         }
11612
11613         wdev_lock(dev->ieee80211_ptr);
11614         ret = nl80211_key_allowed(dev->ieee80211_ptr);
11615         if (!ret)
11616                 ret = rdev_set_qos_map(rdev, dev, qos_map);
11617         wdev_unlock(dev->ieee80211_ptr);
11618
11619         kfree(qos_map);
11620         return ret;
11621 }
11622
11623 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
11624 {
11625         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11626         struct net_device *dev = info->user_ptr[1];
11627         struct wireless_dev *wdev = dev->ieee80211_ptr;
11628         const u8 *peer;
11629         u8 tsid, up;
11630         u16 admitted_time = 0;
11631         int err;
11632
11633         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
11634                 return -EOPNOTSUPP;
11635
11636         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
11637             !info->attrs[NL80211_ATTR_USER_PRIO])
11638                 return -EINVAL;
11639
11640         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
11641         if (tsid >= IEEE80211_NUM_TIDS)
11642                 return -EINVAL;
11643
11644         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
11645         if (up >= IEEE80211_NUM_UPS)
11646                 return -EINVAL;
11647
11648         /* WMM uses TIDs 0-7 even for TSPEC */
11649         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
11650                 /* TODO: handle 802.11 TSPEC/admission control
11651                  * need more attributes for that (e.g. BA session requirement);
11652                  * change the WMM adminssion test above to allow both then
11653                  */
11654                 return -EINVAL;
11655         }
11656
11657         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11658
11659         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
11660                 admitted_time =
11661                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
11662                 if (!admitted_time)
11663                         return -EINVAL;
11664         }
11665
11666         wdev_lock(wdev);
11667         switch (wdev->iftype) {
11668         case NL80211_IFTYPE_STATION:
11669         case NL80211_IFTYPE_P2P_CLIENT:
11670                 if (wdev->current_bss)
11671                         break;
11672                 err = -ENOTCONN;
11673                 goto out;
11674         default:
11675                 err = -EOPNOTSUPP;
11676                 goto out;
11677         }
11678
11679         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
11680
11681  out:
11682         wdev_unlock(wdev);
11683         return err;
11684 }
11685
11686 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
11687 {
11688         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11689         struct net_device *dev = info->user_ptr[1];
11690         struct wireless_dev *wdev = dev->ieee80211_ptr;
11691         const u8 *peer;
11692         u8 tsid;
11693         int err;
11694
11695         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
11696                 return -EINVAL;
11697
11698         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
11699         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11700
11701         wdev_lock(wdev);
11702         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
11703         wdev_unlock(wdev);
11704
11705         return err;
11706 }
11707
11708 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
11709                                        struct genl_info *info)
11710 {
11711         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11712         struct net_device *dev = info->user_ptr[1];
11713         struct wireless_dev *wdev = dev->ieee80211_ptr;
11714         struct cfg80211_chan_def chandef = {};
11715         const u8 *addr;
11716         u8 oper_class;
11717         int err;
11718
11719         if (!rdev->ops->tdls_channel_switch ||
11720             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
11721                 return -EOPNOTSUPP;
11722
11723         switch (dev->ieee80211_ptr->iftype) {
11724         case NL80211_IFTYPE_STATION:
11725         case NL80211_IFTYPE_P2P_CLIENT:
11726                 break;
11727         default:
11728                 return -EOPNOTSUPP;
11729         }
11730
11731         if (!info->attrs[NL80211_ATTR_MAC] ||
11732             !info->attrs[NL80211_ATTR_OPER_CLASS])
11733                 return -EINVAL;
11734
11735         err = nl80211_parse_chandef(rdev, info, &chandef);
11736         if (err)
11737                 return err;
11738
11739         /*
11740          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
11741          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
11742          * specification is not defined for them.
11743          */
11744         if (chandef.chan->band == NL80211_BAND_2GHZ &&
11745             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
11746             chandef.width != NL80211_CHAN_WIDTH_20)
11747                 return -EINVAL;
11748
11749         /* we will be active on the TDLS link */
11750         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
11751                                            wdev->iftype))
11752                 return -EINVAL;
11753
11754         /* don't allow switching to DFS channels */
11755         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
11756                 return -EINVAL;
11757
11758         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11759         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
11760
11761         wdev_lock(wdev);
11762         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
11763         wdev_unlock(wdev);
11764
11765         return err;
11766 }
11767
11768 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
11769                                               struct genl_info *info)
11770 {
11771         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11772         struct net_device *dev = info->user_ptr[1];
11773         struct wireless_dev *wdev = dev->ieee80211_ptr;
11774         const u8 *addr;
11775
11776         if (!rdev->ops->tdls_channel_switch ||
11777             !rdev->ops->tdls_cancel_channel_switch ||
11778             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
11779                 return -EOPNOTSUPP;
11780
11781         switch (dev->ieee80211_ptr->iftype) {
11782         case NL80211_IFTYPE_STATION:
11783         case NL80211_IFTYPE_P2P_CLIENT:
11784                 break;
11785         default:
11786                 return -EOPNOTSUPP;
11787         }
11788
11789         if (!info->attrs[NL80211_ATTR_MAC])
11790                 return -EINVAL;
11791
11792         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11793
11794         wdev_lock(wdev);
11795         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
11796         wdev_unlock(wdev);
11797
11798         return 0;
11799 }
11800
11801 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
11802                                             struct genl_info *info)
11803 {
11804         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11805         struct net_device *dev = info->user_ptr[1];
11806         struct wireless_dev *wdev = dev->ieee80211_ptr;
11807         const struct nlattr *nla;
11808         bool enabled;
11809
11810         if (netif_running(dev))
11811                 return -EBUSY;
11812
11813         if (!rdev->ops->set_multicast_to_unicast)
11814                 return -EOPNOTSUPP;
11815
11816         if (wdev->iftype != NL80211_IFTYPE_AP &&
11817             wdev->iftype != NL80211_IFTYPE_P2P_GO)
11818                 return -EOPNOTSUPP;
11819
11820         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
11821         enabled = nla_get_flag(nla);
11822
11823         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
11824 }
11825
11826 #define NL80211_FLAG_NEED_WIPHY         0x01
11827 #define NL80211_FLAG_NEED_NETDEV        0x02
11828 #define NL80211_FLAG_NEED_RTNL          0x04
11829 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
11830 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
11831                                          NL80211_FLAG_CHECK_NETDEV_UP)
11832 #define NL80211_FLAG_NEED_WDEV          0x10
11833 /* If a netdev is associated, it must be UP, P2P must be started */
11834 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
11835                                          NL80211_FLAG_CHECK_NETDEV_UP)
11836 #define NL80211_FLAG_CLEAR_SKB          0x20
11837
11838 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
11839                             struct genl_info *info)
11840 {
11841         struct cfg80211_registered_device *rdev;
11842         struct wireless_dev *wdev;
11843         struct net_device *dev;
11844         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
11845
11846         if (rtnl)
11847                 rtnl_lock();
11848
11849         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
11850                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
11851                 if (IS_ERR(rdev)) {
11852                         if (rtnl)
11853                                 rtnl_unlock();
11854                         return PTR_ERR(rdev);
11855                 }
11856                 info->user_ptr[0] = rdev;
11857         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
11858                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11859                 ASSERT_RTNL();
11860
11861                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
11862                                                   info->attrs);
11863                 if (IS_ERR(wdev)) {
11864                         if (rtnl)
11865                                 rtnl_unlock();
11866                         return PTR_ERR(wdev);
11867                 }
11868
11869                 dev = wdev->netdev;
11870                 rdev = wiphy_to_rdev(wdev->wiphy);
11871
11872                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
11873                         if (!dev) {
11874                                 if (rtnl)
11875                                         rtnl_unlock();
11876                                 return -EINVAL;
11877                         }
11878
11879                         info->user_ptr[1] = dev;
11880                 } else {
11881                         info->user_ptr[1] = wdev;
11882                 }
11883
11884                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
11885                     !wdev_running(wdev)) {
11886                         if (rtnl)
11887                                 rtnl_unlock();
11888                         return -ENETDOWN;
11889                 }
11890
11891                 if (dev)
11892                         dev_hold(dev);
11893
11894                 info->user_ptr[0] = rdev;
11895         }
11896
11897         return 0;
11898 }
11899
11900 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
11901                               struct genl_info *info)
11902 {
11903         if (info->user_ptr[1]) {
11904                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11905                         struct wireless_dev *wdev = info->user_ptr[1];
11906
11907                         if (wdev->netdev)
11908                                 dev_put(wdev->netdev);
11909                 } else {
11910                         dev_put(info->user_ptr[1]);
11911                 }
11912         }
11913
11914         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
11915                 rtnl_unlock();
11916
11917         /* If needed, clear the netlink message payload from the SKB
11918          * as it might contain key data that shouldn't stick around on
11919          * the heap after the SKB is freed. The netlink message header
11920          * is still needed for further processing, so leave it intact.
11921          */
11922         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
11923                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
11924
11925                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
11926         }
11927 }
11928
11929 static const struct genl_ops nl80211_ops[] = {
11930         {
11931                 .cmd = NL80211_CMD_GET_WIPHY,
11932                 .doit = nl80211_get_wiphy,
11933                 .dumpit = nl80211_dump_wiphy,
11934                 .done = nl80211_dump_wiphy_done,
11935                 .policy = nl80211_policy,
11936                 /* can be retrieved by unprivileged users */
11937                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11938                                   NL80211_FLAG_NEED_RTNL,
11939         },
11940         {
11941                 .cmd = NL80211_CMD_SET_WIPHY,
11942                 .doit = nl80211_set_wiphy,
11943                 .policy = nl80211_policy,
11944                 .flags = GENL_UNS_ADMIN_PERM,
11945                 .internal_flags = NL80211_FLAG_NEED_RTNL,
11946         },
11947         {
11948                 .cmd = NL80211_CMD_GET_INTERFACE,
11949                 .doit = nl80211_get_interface,
11950                 .dumpit = nl80211_dump_interface,
11951                 .policy = nl80211_policy,
11952                 /* can be retrieved by unprivileged users */
11953                 .internal_flags = NL80211_FLAG_NEED_WDEV |
11954                                   NL80211_FLAG_NEED_RTNL,
11955         },
11956         {
11957                 .cmd = NL80211_CMD_SET_INTERFACE,
11958                 .doit = nl80211_set_interface,
11959                 .policy = nl80211_policy,
11960                 .flags = GENL_UNS_ADMIN_PERM,
11961                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11962                                   NL80211_FLAG_NEED_RTNL,
11963         },
11964         {
11965                 .cmd = NL80211_CMD_NEW_INTERFACE,
11966                 .doit = nl80211_new_interface,
11967                 .policy = nl80211_policy,
11968                 .flags = GENL_UNS_ADMIN_PERM,
11969                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11970                                   NL80211_FLAG_NEED_RTNL,
11971         },
11972         {
11973                 .cmd = NL80211_CMD_DEL_INTERFACE,
11974                 .doit = nl80211_del_interface,
11975                 .policy = nl80211_policy,
11976                 .flags = GENL_UNS_ADMIN_PERM,
11977                 .internal_flags = NL80211_FLAG_NEED_WDEV |
11978                                   NL80211_FLAG_NEED_RTNL,
11979         },
11980         {
11981                 .cmd = NL80211_CMD_GET_KEY,
11982                 .doit = nl80211_get_key,
11983                 .policy = nl80211_policy,
11984                 .flags = GENL_UNS_ADMIN_PERM,
11985                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11986                                   NL80211_FLAG_NEED_RTNL,
11987         },
11988         {
11989                 .cmd = NL80211_CMD_SET_KEY,
11990                 .doit = nl80211_set_key,
11991                 .policy = nl80211_policy,
11992                 .flags = GENL_UNS_ADMIN_PERM,
11993                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11994                                   NL80211_FLAG_NEED_RTNL |
11995                                   NL80211_FLAG_CLEAR_SKB,
11996         },
11997         {
11998                 .cmd = NL80211_CMD_NEW_KEY,
11999                 .doit = nl80211_new_key,
12000                 .policy = nl80211_policy,
12001                 .flags = GENL_UNS_ADMIN_PERM,
12002                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12003                                   NL80211_FLAG_NEED_RTNL |
12004                                   NL80211_FLAG_CLEAR_SKB,
12005         },
12006         {
12007                 .cmd = NL80211_CMD_DEL_KEY,
12008                 .doit = nl80211_del_key,
12009                 .policy = nl80211_policy,
12010                 .flags = GENL_UNS_ADMIN_PERM,
12011                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12012                                   NL80211_FLAG_NEED_RTNL,
12013         },
12014         {
12015                 .cmd = NL80211_CMD_SET_BEACON,
12016                 .policy = nl80211_policy,
12017                 .flags = GENL_UNS_ADMIN_PERM,
12018                 .doit = nl80211_set_beacon,
12019                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12020                                   NL80211_FLAG_NEED_RTNL,
12021         },
12022         {
12023                 .cmd = NL80211_CMD_START_AP,
12024                 .policy = nl80211_policy,
12025                 .flags = GENL_UNS_ADMIN_PERM,
12026                 .doit = nl80211_start_ap,
12027                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12028                                   NL80211_FLAG_NEED_RTNL,
12029         },
12030         {
12031                 .cmd = NL80211_CMD_STOP_AP,
12032                 .policy = nl80211_policy,
12033                 .flags = GENL_UNS_ADMIN_PERM,
12034                 .doit = nl80211_stop_ap,
12035                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12036                                   NL80211_FLAG_NEED_RTNL,
12037         },
12038         {
12039                 .cmd = NL80211_CMD_GET_STATION,
12040                 .doit = nl80211_get_station,
12041                 .dumpit = nl80211_dump_station,
12042                 .policy = nl80211_policy,
12043                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12044                                   NL80211_FLAG_NEED_RTNL,
12045         },
12046         {
12047                 .cmd = NL80211_CMD_SET_STATION,
12048                 .doit = nl80211_set_station,
12049                 .policy = nl80211_policy,
12050                 .flags = GENL_UNS_ADMIN_PERM,
12051                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12052                                   NL80211_FLAG_NEED_RTNL,
12053         },
12054         {
12055                 .cmd = NL80211_CMD_NEW_STATION,
12056                 .doit = nl80211_new_station,
12057                 .policy = nl80211_policy,
12058                 .flags = GENL_UNS_ADMIN_PERM,
12059                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12060                                   NL80211_FLAG_NEED_RTNL,
12061         },
12062         {
12063                 .cmd = NL80211_CMD_DEL_STATION,
12064                 .doit = nl80211_del_station,
12065                 .policy = nl80211_policy,
12066                 .flags = GENL_UNS_ADMIN_PERM,
12067                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12068                                   NL80211_FLAG_NEED_RTNL,
12069         },
12070         {
12071                 .cmd = NL80211_CMD_GET_MPATH,
12072                 .doit = nl80211_get_mpath,
12073                 .dumpit = nl80211_dump_mpath,
12074                 .policy = nl80211_policy,
12075                 .flags = GENL_UNS_ADMIN_PERM,
12076                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12077                                   NL80211_FLAG_NEED_RTNL,
12078         },
12079         {
12080                 .cmd = NL80211_CMD_GET_MPP,
12081                 .doit = nl80211_get_mpp,
12082                 .dumpit = nl80211_dump_mpp,
12083                 .policy = nl80211_policy,
12084                 .flags = GENL_UNS_ADMIN_PERM,
12085                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12086                                   NL80211_FLAG_NEED_RTNL,
12087         },
12088         {
12089                 .cmd = NL80211_CMD_SET_MPATH,
12090                 .doit = nl80211_set_mpath,
12091                 .policy = nl80211_policy,
12092                 .flags = GENL_UNS_ADMIN_PERM,
12093                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12094                                   NL80211_FLAG_NEED_RTNL,
12095         },
12096         {
12097                 .cmd = NL80211_CMD_NEW_MPATH,
12098                 .doit = nl80211_new_mpath,
12099                 .policy = nl80211_policy,
12100                 .flags = GENL_UNS_ADMIN_PERM,
12101                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12102                                   NL80211_FLAG_NEED_RTNL,
12103         },
12104         {
12105                 .cmd = NL80211_CMD_DEL_MPATH,
12106                 .doit = nl80211_del_mpath,
12107                 .policy = nl80211_policy,
12108                 .flags = GENL_UNS_ADMIN_PERM,
12109                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12110                                   NL80211_FLAG_NEED_RTNL,
12111         },
12112         {
12113                 .cmd = NL80211_CMD_SET_BSS,
12114                 .doit = nl80211_set_bss,
12115                 .policy = nl80211_policy,
12116                 .flags = GENL_UNS_ADMIN_PERM,
12117                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12118                                   NL80211_FLAG_NEED_RTNL,
12119         },
12120         {
12121                 .cmd = NL80211_CMD_GET_REG,
12122                 .doit = nl80211_get_reg_do,
12123                 .dumpit = nl80211_get_reg_dump,
12124                 .policy = nl80211_policy,
12125                 .internal_flags = NL80211_FLAG_NEED_RTNL,
12126                 /* can be retrieved by unprivileged users */
12127         },
12128 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
12129         {
12130                 .cmd = NL80211_CMD_SET_REG,
12131                 .doit = nl80211_set_reg,
12132                 .policy = nl80211_policy,
12133                 .flags = GENL_ADMIN_PERM,
12134                 .internal_flags = NL80211_FLAG_NEED_RTNL,
12135         },
12136 #endif
12137         {
12138                 .cmd = NL80211_CMD_REQ_SET_REG,
12139                 .doit = nl80211_req_set_reg,
12140                 .policy = nl80211_policy,
12141                 .flags = GENL_ADMIN_PERM,
12142         },
12143         {
12144                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
12145                 .doit = nl80211_get_mesh_config,
12146                 .policy = nl80211_policy,
12147                 /* can be retrieved by unprivileged users */
12148                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12149                                   NL80211_FLAG_NEED_RTNL,
12150         },
12151         {
12152                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
12153                 .doit = nl80211_update_mesh_config,
12154                 .policy = nl80211_policy,
12155                 .flags = GENL_UNS_ADMIN_PERM,
12156                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12157                                   NL80211_FLAG_NEED_RTNL,
12158         },
12159         {
12160                 .cmd = NL80211_CMD_TRIGGER_SCAN,
12161                 .doit = nl80211_trigger_scan,
12162                 .policy = nl80211_policy,
12163                 .flags = GENL_UNS_ADMIN_PERM,
12164                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12165                                   NL80211_FLAG_NEED_RTNL,
12166         },
12167         {
12168                 .cmd = NL80211_CMD_ABORT_SCAN,
12169                 .doit = nl80211_abort_scan,
12170                 .policy = nl80211_policy,
12171                 .flags = GENL_UNS_ADMIN_PERM,
12172                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12173                                   NL80211_FLAG_NEED_RTNL,
12174         },
12175         {
12176                 .cmd = NL80211_CMD_GET_SCAN,
12177                 .policy = nl80211_policy,
12178                 .dumpit = nl80211_dump_scan,
12179         },
12180         {
12181                 .cmd = NL80211_CMD_START_SCHED_SCAN,
12182                 .doit = nl80211_start_sched_scan,
12183                 .policy = nl80211_policy,
12184                 .flags = GENL_UNS_ADMIN_PERM,
12185                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12186                                   NL80211_FLAG_NEED_RTNL,
12187         },
12188         {
12189                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
12190                 .doit = nl80211_stop_sched_scan,
12191                 .policy = nl80211_policy,
12192                 .flags = GENL_UNS_ADMIN_PERM,
12193                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12194                                   NL80211_FLAG_NEED_RTNL,
12195         },
12196         {
12197                 .cmd = NL80211_CMD_AUTHENTICATE,
12198                 .doit = nl80211_authenticate,
12199                 .policy = nl80211_policy,
12200                 .flags = GENL_UNS_ADMIN_PERM,
12201                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12202                                   NL80211_FLAG_NEED_RTNL |
12203                                   NL80211_FLAG_CLEAR_SKB,
12204         },
12205         {
12206                 .cmd = NL80211_CMD_ASSOCIATE,
12207                 .doit = nl80211_associate,
12208                 .policy = nl80211_policy,
12209                 .flags = GENL_UNS_ADMIN_PERM,
12210                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12211                                   NL80211_FLAG_NEED_RTNL,
12212         },
12213         {
12214                 .cmd = NL80211_CMD_DEAUTHENTICATE,
12215                 .doit = nl80211_deauthenticate,
12216                 .policy = nl80211_policy,
12217                 .flags = GENL_UNS_ADMIN_PERM,
12218                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12219                                   NL80211_FLAG_NEED_RTNL,
12220         },
12221         {
12222                 .cmd = NL80211_CMD_DISASSOCIATE,
12223                 .doit = nl80211_disassociate,
12224                 .policy = nl80211_policy,
12225                 .flags = GENL_UNS_ADMIN_PERM,
12226                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12227                                   NL80211_FLAG_NEED_RTNL,
12228         },
12229         {
12230                 .cmd = NL80211_CMD_JOIN_IBSS,
12231                 .doit = nl80211_join_ibss,
12232                 .policy = nl80211_policy,
12233                 .flags = GENL_UNS_ADMIN_PERM,
12234                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12235                                   NL80211_FLAG_NEED_RTNL,
12236         },
12237         {
12238                 .cmd = NL80211_CMD_LEAVE_IBSS,
12239                 .doit = nl80211_leave_ibss,
12240                 .policy = nl80211_policy,
12241                 .flags = GENL_UNS_ADMIN_PERM,
12242                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12243                                   NL80211_FLAG_NEED_RTNL,
12244         },
12245 #ifdef CONFIG_NL80211_TESTMODE
12246         {
12247                 .cmd = NL80211_CMD_TESTMODE,
12248                 .doit = nl80211_testmode_do,
12249                 .dumpit = nl80211_testmode_dump,
12250                 .policy = nl80211_policy,
12251                 .flags = GENL_UNS_ADMIN_PERM,
12252                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12253                                   NL80211_FLAG_NEED_RTNL,
12254         },
12255 #endif
12256         {
12257                 .cmd = NL80211_CMD_CONNECT,
12258                 .doit = nl80211_connect,
12259                 .policy = nl80211_policy,
12260                 .flags = GENL_UNS_ADMIN_PERM,
12261                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12262                                   NL80211_FLAG_NEED_RTNL,
12263         },
12264         {
12265                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
12266                 .doit = nl80211_update_connect_params,
12267                 .policy = nl80211_policy,
12268                 .flags = GENL_ADMIN_PERM,
12269                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12270                                   NL80211_FLAG_NEED_RTNL,
12271         },
12272         {
12273                 .cmd = NL80211_CMD_DISCONNECT,
12274                 .doit = nl80211_disconnect,
12275                 .policy = nl80211_policy,
12276                 .flags = GENL_UNS_ADMIN_PERM,
12277                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12278                                   NL80211_FLAG_NEED_RTNL,
12279         },
12280         {
12281                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
12282                 .doit = nl80211_wiphy_netns,
12283                 .policy = nl80211_policy,
12284                 .flags = GENL_UNS_ADMIN_PERM,
12285                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12286                                   NL80211_FLAG_NEED_RTNL,
12287         },
12288         {
12289                 .cmd = NL80211_CMD_GET_SURVEY,
12290                 .policy = nl80211_policy,
12291                 .dumpit = nl80211_dump_survey,
12292         },
12293         {
12294                 .cmd = NL80211_CMD_SET_PMKSA,
12295                 .doit = nl80211_setdel_pmksa,
12296                 .policy = nl80211_policy,
12297                 .flags = GENL_UNS_ADMIN_PERM,
12298                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12299                                   NL80211_FLAG_NEED_RTNL,
12300         },
12301         {
12302                 .cmd = NL80211_CMD_DEL_PMKSA,
12303                 .doit = nl80211_setdel_pmksa,
12304                 .policy = nl80211_policy,
12305                 .flags = GENL_UNS_ADMIN_PERM,
12306                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12307                                   NL80211_FLAG_NEED_RTNL,
12308         },
12309         {
12310                 .cmd = NL80211_CMD_FLUSH_PMKSA,
12311                 .doit = nl80211_flush_pmksa,
12312                 .policy = nl80211_policy,
12313                 .flags = GENL_UNS_ADMIN_PERM,
12314                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12315                                   NL80211_FLAG_NEED_RTNL,
12316         },
12317         {
12318                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
12319                 .doit = nl80211_remain_on_channel,
12320                 .policy = nl80211_policy,
12321                 .flags = GENL_UNS_ADMIN_PERM,
12322                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12323                                   NL80211_FLAG_NEED_RTNL,
12324         },
12325         {
12326                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12327                 .doit = nl80211_cancel_remain_on_channel,
12328                 .policy = nl80211_policy,
12329                 .flags = GENL_UNS_ADMIN_PERM,
12330                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12331                                   NL80211_FLAG_NEED_RTNL,
12332         },
12333         {
12334                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
12335                 .doit = nl80211_set_tx_bitrate_mask,
12336                 .policy = nl80211_policy,
12337                 .flags = GENL_UNS_ADMIN_PERM,
12338                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12339                                   NL80211_FLAG_NEED_RTNL,
12340         },
12341         {
12342                 .cmd = NL80211_CMD_REGISTER_FRAME,
12343                 .doit = nl80211_register_mgmt,
12344                 .policy = nl80211_policy,
12345                 .flags = GENL_UNS_ADMIN_PERM,
12346                 .internal_flags = NL80211_FLAG_NEED_WDEV |
12347                                   NL80211_FLAG_NEED_RTNL,
12348         },
12349         {
12350                 .cmd = NL80211_CMD_FRAME,
12351                 .doit = nl80211_tx_mgmt,
12352                 .policy = nl80211_policy,
12353                 .flags = GENL_UNS_ADMIN_PERM,
12354                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12355                                   NL80211_FLAG_NEED_RTNL,
12356         },
12357         {
12358                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
12359                 .doit = nl80211_tx_mgmt_cancel_wait,
12360                 .policy = nl80211_policy,
12361                 .flags = GENL_UNS_ADMIN_PERM,
12362                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12363                                   NL80211_FLAG_NEED_RTNL,
12364         },
12365         {
12366                 .cmd = NL80211_CMD_SET_POWER_SAVE,
12367                 .doit = nl80211_set_power_save,
12368                 .policy = nl80211_policy,
12369                 .flags = GENL_UNS_ADMIN_PERM,
12370                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12371                                   NL80211_FLAG_NEED_RTNL,
12372         },
12373         {
12374                 .cmd = NL80211_CMD_GET_POWER_SAVE,
12375                 .doit = nl80211_get_power_save,
12376                 .policy = nl80211_policy,
12377                 /* can be retrieved by unprivileged users */
12378                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12379                                   NL80211_FLAG_NEED_RTNL,
12380         },
12381         {
12382                 .cmd = NL80211_CMD_SET_CQM,
12383                 .doit = nl80211_set_cqm,
12384                 .policy = nl80211_policy,
12385                 .flags = GENL_UNS_ADMIN_PERM,
12386                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12387                                   NL80211_FLAG_NEED_RTNL,
12388         },
12389         {
12390                 .cmd = NL80211_CMD_SET_CHANNEL,
12391                 .doit = nl80211_set_channel,
12392                 .policy = nl80211_policy,
12393                 .flags = GENL_UNS_ADMIN_PERM,
12394                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12395                                   NL80211_FLAG_NEED_RTNL,
12396         },
12397         {
12398                 .cmd = NL80211_CMD_SET_WDS_PEER,
12399                 .doit = nl80211_set_wds_peer,
12400                 .policy = nl80211_policy,
12401                 .flags = GENL_UNS_ADMIN_PERM,
12402                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12403                                   NL80211_FLAG_NEED_RTNL,
12404         },
12405         {
12406                 .cmd = NL80211_CMD_JOIN_MESH,
12407                 .doit = nl80211_join_mesh,
12408                 .policy = nl80211_policy,
12409                 .flags = GENL_UNS_ADMIN_PERM,
12410                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12411                                   NL80211_FLAG_NEED_RTNL,
12412         },
12413         {
12414                 .cmd = NL80211_CMD_LEAVE_MESH,
12415                 .doit = nl80211_leave_mesh,
12416                 .policy = nl80211_policy,
12417                 .flags = GENL_UNS_ADMIN_PERM,
12418                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12419                                   NL80211_FLAG_NEED_RTNL,
12420         },
12421         {
12422                 .cmd = NL80211_CMD_JOIN_OCB,
12423                 .doit = nl80211_join_ocb,
12424                 .policy = nl80211_policy,
12425                 .flags = GENL_UNS_ADMIN_PERM,
12426                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12427                                   NL80211_FLAG_NEED_RTNL,
12428         },
12429         {
12430                 .cmd = NL80211_CMD_LEAVE_OCB,
12431                 .doit = nl80211_leave_ocb,
12432                 .policy = nl80211_policy,
12433                 .flags = GENL_UNS_ADMIN_PERM,
12434                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12435                                   NL80211_FLAG_NEED_RTNL,
12436         },
12437 #ifdef CONFIG_PM
12438         {
12439                 .cmd = NL80211_CMD_GET_WOWLAN,
12440                 .doit = nl80211_get_wowlan,
12441                 .policy = nl80211_policy,
12442                 /* can be retrieved by unprivileged users */
12443                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12444                                   NL80211_FLAG_NEED_RTNL,
12445         },
12446         {
12447                 .cmd = NL80211_CMD_SET_WOWLAN,
12448                 .doit = nl80211_set_wowlan,
12449                 .policy = nl80211_policy,
12450                 .flags = GENL_UNS_ADMIN_PERM,
12451                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12452                                   NL80211_FLAG_NEED_RTNL,
12453         },
12454 #endif
12455         {
12456                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
12457                 .doit = nl80211_set_rekey_data,
12458                 .policy = nl80211_policy,
12459                 .flags = GENL_UNS_ADMIN_PERM,
12460                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12461                                   NL80211_FLAG_NEED_RTNL |
12462                                   NL80211_FLAG_CLEAR_SKB,
12463         },
12464         {
12465                 .cmd = NL80211_CMD_TDLS_MGMT,
12466                 .doit = nl80211_tdls_mgmt,
12467                 .policy = nl80211_policy,
12468                 .flags = GENL_UNS_ADMIN_PERM,
12469                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12470                                   NL80211_FLAG_NEED_RTNL,
12471         },
12472         {
12473                 .cmd = NL80211_CMD_TDLS_OPER,
12474                 .doit = nl80211_tdls_oper,
12475                 .policy = nl80211_policy,
12476                 .flags = GENL_UNS_ADMIN_PERM,
12477                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12478                                   NL80211_FLAG_NEED_RTNL,
12479         },
12480         {
12481                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
12482                 .doit = nl80211_register_unexpected_frame,
12483                 .policy = nl80211_policy,
12484                 .flags = GENL_UNS_ADMIN_PERM,
12485                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12486                                   NL80211_FLAG_NEED_RTNL,
12487         },
12488         {
12489                 .cmd = NL80211_CMD_PROBE_CLIENT,
12490                 .doit = nl80211_probe_client,
12491                 .policy = nl80211_policy,
12492                 .flags = GENL_UNS_ADMIN_PERM,
12493                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12494                                   NL80211_FLAG_NEED_RTNL,
12495         },
12496         {
12497                 .cmd = NL80211_CMD_REGISTER_BEACONS,
12498                 .doit = nl80211_register_beacons,
12499                 .policy = nl80211_policy,
12500                 .flags = GENL_UNS_ADMIN_PERM,
12501                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12502                                   NL80211_FLAG_NEED_RTNL,
12503         },
12504         {
12505                 .cmd = NL80211_CMD_SET_NOACK_MAP,
12506                 .doit = nl80211_set_noack_map,
12507                 .policy = nl80211_policy,
12508                 .flags = GENL_UNS_ADMIN_PERM,
12509                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12510                                   NL80211_FLAG_NEED_RTNL,
12511         },
12512         {
12513                 .cmd = NL80211_CMD_START_P2P_DEVICE,
12514                 .doit = nl80211_start_p2p_device,
12515                 .policy = nl80211_policy,
12516                 .flags = GENL_UNS_ADMIN_PERM,
12517                 .internal_flags = NL80211_FLAG_NEED_WDEV |
12518                                   NL80211_FLAG_NEED_RTNL,
12519         },
12520         {
12521                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
12522                 .doit = nl80211_stop_p2p_device,
12523                 .policy = nl80211_policy,
12524                 .flags = GENL_UNS_ADMIN_PERM,
12525                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12526                                   NL80211_FLAG_NEED_RTNL,
12527         },
12528         {
12529                 .cmd = NL80211_CMD_START_NAN,
12530                 .doit = nl80211_start_nan,
12531                 .policy = nl80211_policy,
12532                 .flags = GENL_ADMIN_PERM,
12533                 .internal_flags = NL80211_FLAG_NEED_WDEV |
12534                                   NL80211_FLAG_NEED_RTNL,
12535         },
12536         {
12537                 .cmd = NL80211_CMD_STOP_NAN,
12538                 .doit = nl80211_stop_nan,
12539                 .policy = nl80211_policy,
12540                 .flags = GENL_ADMIN_PERM,
12541                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12542                                   NL80211_FLAG_NEED_RTNL,
12543         },
12544         {
12545                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
12546                 .doit = nl80211_nan_add_func,
12547                 .policy = nl80211_policy,
12548                 .flags = GENL_ADMIN_PERM,
12549                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12550                                   NL80211_FLAG_NEED_RTNL,
12551         },
12552         {
12553                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
12554                 .doit = nl80211_nan_del_func,
12555                 .policy = nl80211_policy,
12556                 .flags = GENL_ADMIN_PERM,
12557                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12558                                   NL80211_FLAG_NEED_RTNL,
12559         },
12560         {
12561                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
12562                 .doit = nl80211_nan_change_config,
12563                 .policy = nl80211_policy,
12564                 .flags = GENL_ADMIN_PERM,
12565                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12566                                   NL80211_FLAG_NEED_RTNL,
12567         },
12568         {
12569                 .cmd = NL80211_CMD_SET_MCAST_RATE,
12570                 .doit = nl80211_set_mcast_rate,
12571                 .policy = nl80211_policy,
12572                 .flags = GENL_UNS_ADMIN_PERM,
12573                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12574                                   NL80211_FLAG_NEED_RTNL,
12575         },
12576         {
12577                 .cmd = NL80211_CMD_SET_MAC_ACL,
12578                 .doit = nl80211_set_mac_acl,
12579                 .policy = nl80211_policy,
12580                 .flags = GENL_UNS_ADMIN_PERM,
12581                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12582                                   NL80211_FLAG_NEED_RTNL,
12583         },
12584         {
12585                 .cmd = NL80211_CMD_RADAR_DETECT,
12586                 .doit = nl80211_start_radar_detection,
12587                 .policy = nl80211_policy,
12588                 .flags = GENL_UNS_ADMIN_PERM,
12589                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12590                                   NL80211_FLAG_NEED_RTNL,
12591         },
12592         {
12593                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
12594                 .doit = nl80211_get_protocol_features,
12595                 .policy = nl80211_policy,
12596         },
12597         {
12598                 .cmd = NL80211_CMD_UPDATE_FT_IES,
12599                 .doit = nl80211_update_ft_ies,
12600                 .policy = nl80211_policy,
12601                 .flags = GENL_UNS_ADMIN_PERM,
12602                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12603                                   NL80211_FLAG_NEED_RTNL,
12604         },
12605         {
12606                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
12607                 .doit = nl80211_crit_protocol_start,
12608                 .policy = nl80211_policy,
12609                 .flags = GENL_UNS_ADMIN_PERM,
12610                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12611                                   NL80211_FLAG_NEED_RTNL,
12612         },
12613         {
12614                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
12615                 .doit = nl80211_crit_protocol_stop,
12616                 .policy = nl80211_policy,
12617                 .flags = GENL_UNS_ADMIN_PERM,
12618                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12619                                   NL80211_FLAG_NEED_RTNL,
12620         },
12621         {
12622                 .cmd = NL80211_CMD_GET_COALESCE,
12623                 .doit = nl80211_get_coalesce,
12624                 .policy = nl80211_policy,
12625                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12626                                   NL80211_FLAG_NEED_RTNL,
12627         },
12628         {
12629                 .cmd = NL80211_CMD_SET_COALESCE,
12630                 .doit = nl80211_set_coalesce,
12631                 .policy = nl80211_policy,
12632                 .flags = GENL_UNS_ADMIN_PERM,
12633                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12634                                   NL80211_FLAG_NEED_RTNL,
12635         },
12636         {
12637                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
12638                 .doit = nl80211_channel_switch,
12639                 .policy = nl80211_policy,
12640                 .flags = GENL_UNS_ADMIN_PERM,
12641                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12642                                   NL80211_FLAG_NEED_RTNL,
12643         },
12644         {
12645                 .cmd = NL80211_CMD_VENDOR,
12646                 .doit = nl80211_vendor_cmd,
12647                 .dumpit = nl80211_vendor_cmd_dump,
12648                 .policy = nl80211_policy,
12649                 .flags = GENL_UNS_ADMIN_PERM,
12650                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12651                                   NL80211_FLAG_NEED_RTNL,
12652         },
12653         {
12654                 .cmd = NL80211_CMD_SET_QOS_MAP,
12655                 .doit = nl80211_set_qos_map,
12656                 .policy = nl80211_policy,
12657                 .flags = GENL_UNS_ADMIN_PERM,
12658                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12659                                   NL80211_FLAG_NEED_RTNL,
12660         },
12661         {
12662                 .cmd = NL80211_CMD_ADD_TX_TS,
12663                 .doit = nl80211_add_tx_ts,
12664                 .policy = nl80211_policy,
12665                 .flags = GENL_UNS_ADMIN_PERM,
12666                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12667                                   NL80211_FLAG_NEED_RTNL,
12668         },
12669         {
12670                 .cmd = NL80211_CMD_DEL_TX_TS,
12671                 .doit = nl80211_del_tx_ts,
12672                 .policy = nl80211_policy,
12673                 .flags = GENL_UNS_ADMIN_PERM,
12674                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12675                                   NL80211_FLAG_NEED_RTNL,
12676         },
12677         {
12678                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
12679                 .doit = nl80211_tdls_channel_switch,
12680                 .policy = nl80211_policy,
12681                 .flags = GENL_UNS_ADMIN_PERM,
12682                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12683                                   NL80211_FLAG_NEED_RTNL,
12684         },
12685         {
12686                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
12687                 .doit = nl80211_tdls_cancel_channel_switch,
12688                 .policy = nl80211_policy,
12689                 .flags = GENL_UNS_ADMIN_PERM,
12690                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12691                                   NL80211_FLAG_NEED_RTNL,
12692         },
12693         {
12694                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
12695                 .doit = nl80211_set_multicast_to_unicast,
12696                 .policy = nl80211_policy,
12697                 .flags = GENL_UNS_ADMIN_PERM,
12698                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12699                                   NL80211_FLAG_NEED_RTNL,
12700         },
12701 };
12702
12703 static struct genl_family nl80211_fam __ro_after_init = {
12704         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
12705         .hdrsize = 0,                   /* no private header */
12706         .version = 1,                   /* no particular meaning now */
12707         .maxattr = NL80211_ATTR_MAX,
12708         .netnsok = true,
12709         .pre_doit = nl80211_pre_doit,
12710         .post_doit = nl80211_post_doit,
12711         .module = THIS_MODULE,
12712         .ops = nl80211_ops,
12713         .n_ops = ARRAY_SIZE(nl80211_ops),
12714         .mcgrps = nl80211_mcgrps,
12715         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
12716 };
12717
12718 /* notification functions */
12719
12720 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
12721                           enum nl80211_commands cmd)
12722 {
12723         struct sk_buff *msg;
12724         struct nl80211_dump_wiphy_state state = {};
12725
12726         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
12727                 cmd != NL80211_CMD_DEL_WIPHY);
12728
12729         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12730         if (!msg)
12731                 return;
12732
12733         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
12734                 nlmsg_free(msg);
12735                 return;
12736         }
12737
12738         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12739                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
12740 }
12741
12742 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
12743                                 struct wireless_dev *wdev,
12744                                 enum nl80211_commands cmd)
12745 {
12746         struct sk_buff *msg;
12747
12748         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
12749                 cmd != NL80211_CMD_DEL_INTERFACE);
12750
12751         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12752         if (!msg)
12753                 return;
12754
12755         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
12756                                cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
12757                 nlmsg_free(msg);
12758                 return;
12759         }
12760
12761         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12762                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
12763 }
12764
12765 static int nl80211_add_scan_req(struct sk_buff *msg,
12766                                 struct cfg80211_registered_device *rdev)
12767 {
12768         struct cfg80211_scan_request *req = rdev->scan_req;
12769         struct nlattr *nest;
12770         int i;
12771
12772         if (WARN_ON(!req))
12773                 return 0;
12774
12775         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
12776         if (!nest)
12777                 goto nla_put_failure;
12778         for (i = 0; i < req->n_ssids; i++) {
12779                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
12780                         goto nla_put_failure;
12781         }
12782         nla_nest_end(msg, nest);
12783
12784         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
12785         if (!nest)
12786                 goto nla_put_failure;
12787         for (i = 0; i < req->n_channels; i++) {
12788                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
12789                         goto nla_put_failure;
12790         }
12791         nla_nest_end(msg, nest);
12792
12793         if (req->ie &&
12794             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
12795                 goto nla_put_failure;
12796
12797         if (req->flags &&
12798             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
12799                 goto nla_put_failure;
12800
12801         if (req->info.scan_start_tsf &&
12802             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
12803                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
12804              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
12805                      req->info.tsf_bssid)))
12806                 goto nla_put_failure;
12807
12808         return 0;
12809  nla_put_failure:
12810         return -ENOBUFS;
12811 }
12812
12813 static int nl80211_send_scan_msg(struct sk_buff *msg,
12814                                  struct cfg80211_registered_device *rdev,
12815                                  struct wireless_dev *wdev,
12816                                  u32 portid, u32 seq, int flags,
12817                                  u32 cmd)
12818 {
12819         void *hdr;
12820
12821         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
12822         if (!hdr)
12823                 return -1;
12824
12825         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12826             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12827                                          wdev->netdev->ifindex)) ||
12828             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12829                               NL80211_ATTR_PAD))
12830                 goto nla_put_failure;
12831
12832         /* ignore errors and send incomplete event anyway */
12833         nl80211_add_scan_req(msg, rdev);
12834
12835         genlmsg_end(msg, hdr);
12836         return 0;
12837
12838  nla_put_failure:
12839         genlmsg_cancel(msg, hdr);
12840         return -EMSGSIZE;
12841 }
12842
12843 static int
12844 nl80211_send_sched_scan_msg(struct sk_buff *msg,
12845                             struct cfg80211_registered_device *rdev,
12846                             struct net_device *netdev,
12847                             u32 portid, u32 seq, int flags, u32 cmd)
12848 {
12849         void *hdr;
12850
12851         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
12852         if (!hdr)
12853                 return -1;
12854
12855         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12856             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12857                 goto nla_put_failure;
12858
12859         genlmsg_end(msg, hdr);
12860         return 0;
12861
12862  nla_put_failure:
12863         genlmsg_cancel(msg, hdr);
12864         return -EMSGSIZE;
12865 }
12866
12867 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
12868                              struct wireless_dev *wdev)
12869 {
12870         struct sk_buff *msg;
12871
12872         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12873         if (!msg)
12874                 return;
12875
12876         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
12877                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
12878                 nlmsg_free(msg);
12879                 return;
12880         }
12881
12882         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12883                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
12884 }
12885
12886 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
12887                                        struct wireless_dev *wdev, bool aborted)
12888 {
12889         struct sk_buff *msg;
12890
12891         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12892         if (!msg)
12893                 return NULL;
12894
12895         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
12896                                   aborted ? NL80211_CMD_SCAN_ABORTED :
12897                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
12898                 nlmsg_free(msg);
12899                 return NULL;
12900         }
12901
12902         return msg;
12903 }
12904
12905 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
12906                               struct sk_buff *msg)
12907 {
12908         if (!msg)
12909                 return;
12910
12911         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12912                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
12913 }
12914
12915 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
12916                                      struct net_device *netdev)
12917 {
12918         struct sk_buff *msg;
12919
12920         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12921         if (!msg)
12922                 return;
12923
12924         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
12925                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
12926                 nlmsg_free(msg);
12927                 return;
12928         }
12929
12930         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12931                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
12932 }
12933
12934 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
12935                              struct net_device *netdev, u32 cmd)
12936 {
12937         struct sk_buff *msg;
12938
12939         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12940         if (!msg)
12941                 return;
12942
12943         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
12944                 nlmsg_free(msg);
12945                 return;
12946         }
12947
12948         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12949                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
12950 }
12951
12952 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
12953                                           struct regulatory_request *request)
12954 {
12955         /* Userspace can always count this one always being set */
12956         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
12957                 goto nla_put_failure;
12958
12959         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
12960                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12961                                NL80211_REGDOM_TYPE_WORLD))
12962                         goto nla_put_failure;
12963         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
12964                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12965                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
12966                         goto nla_put_failure;
12967         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
12968                    request->intersect) {
12969                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12970                                NL80211_REGDOM_TYPE_INTERSECTION))
12971                         goto nla_put_failure;
12972         } else {
12973                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12974                                NL80211_REGDOM_TYPE_COUNTRY) ||
12975                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
12976                                    request->alpha2))
12977                         goto nla_put_failure;
12978         }
12979
12980         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
12981                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
12982
12983                 if (wiphy &&
12984                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
12985                         goto nla_put_failure;
12986
12987                 if (wiphy &&
12988                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
12989                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
12990                         goto nla_put_failure;
12991         }
12992
12993         return true;
12994
12995 nla_put_failure:
12996         return false;
12997 }
12998
12999 /*
13000  * This can happen on global regulatory changes or device specific settings
13001  * based on custom regulatory domains.
13002  */
13003 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
13004                                      struct regulatory_request *request)
13005 {
13006         struct sk_buff *msg;
13007         void *hdr;
13008
13009         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13010         if (!msg)
13011                 return;
13012
13013         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
13014         if (!hdr) {
13015                 nlmsg_free(msg);
13016                 return;
13017         }
13018
13019         if (nl80211_reg_change_event_fill(msg, request) == false)
13020                 goto nla_put_failure;
13021
13022         genlmsg_end(msg, hdr);
13023
13024         rcu_read_lock();
13025         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13026                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13027         rcu_read_unlock();
13028
13029         return;
13030
13031 nla_put_failure:
13032         genlmsg_cancel(msg, hdr);
13033         nlmsg_free(msg);
13034 }
13035
13036 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
13037                                     struct net_device *netdev,
13038                                     const u8 *buf, size_t len,
13039                                     enum nl80211_commands cmd, gfp_t gfp,
13040                                     int uapsd_queues)
13041 {
13042         struct sk_buff *msg;
13043         void *hdr;
13044
13045         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13046         if (!msg)
13047                 return;
13048
13049         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13050         if (!hdr) {
13051                 nlmsg_free(msg);
13052                 return;
13053         }
13054
13055         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13056             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13057             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
13058                 goto nla_put_failure;
13059
13060         if (uapsd_queues >= 0) {
13061                 struct nlattr *nla_wmm =
13062                         nla_nest_start(msg, NL80211_ATTR_STA_WME);
13063                 if (!nla_wmm)
13064                         goto nla_put_failure;
13065
13066                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
13067                                uapsd_queues))
13068                         goto nla_put_failure;
13069
13070                 nla_nest_end(msg, nla_wmm);
13071         }
13072
13073         genlmsg_end(msg, hdr);
13074
13075         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13076                                 NL80211_MCGRP_MLME, gfp);
13077         return;
13078
13079  nla_put_failure:
13080         genlmsg_cancel(msg, hdr);
13081         nlmsg_free(msg);
13082 }
13083
13084 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
13085                           struct net_device *netdev, const u8 *buf,
13086                           size_t len, gfp_t gfp)
13087 {
13088         nl80211_send_mlme_event(rdev, netdev, buf, len,
13089                                 NL80211_CMD_AUTHENTICATE, gfp, -1);
13090 }
13091
13092 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
13093                            struct net_device *netdev, const u8 *buf,
13094                            size_t len, gfp_t gfp, int uapsd_queues)
13095 {
13096         nl80211_send_mlme_event(rdev, netdev, buf, len,
13097                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
13098 }
13099
13100 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
13101                          struct net_device *netdev, const u8 *buf,
13102                          size_t len, gfp_t gfp)
13103 {
13104         nl80211_send_mlme_event(rdev, netdev, buf, len,
13105                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
13106 }
13107
13108 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
13109                            struct net_device *netdev, const u8 *buf,
13110                            size_t len, gfp_t gfp)
13111 {
13112         nl80211_send_mlme_event(rdev, netdev, buf, len,
13113                                 NL80211_CMD_DISASSOCIATE, gfp, -1);
13114 }
13115
13116 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
13117                                   size_t len)
13118 {
13119         struct wireless_dev *wdev = dev->ieee80211_ptr;
13120         struct wiphy *wiphy = wdev->wiphy;
13121         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13122         const struct ieee80211_mgmt *mgmt = (void *)buf;
13123         u32 cmd;
13124
13125         if (WARN_ON(len < 2))
13126                 return;
13127
13128         if (ieee80211_is_deauth(mgmt->frame_control))
13129                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
13130         else
13131                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
13132
13133         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
13134         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
13135 }
13136 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
13137
13138 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
13139                                       struct net_device *netdev, int cmd,
13140                                       const u8 *addr, gfp_t gfp)
13141 {
13142         struct sk_buff *msg;
13143         void *hdr;
13144
13145         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13146         if (!msg)
13147                 return;
13148
13149         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13150         if (!hdr) {
13151                 nlmsg_free(msg);
13152                 return;
13153         }
13154
13155         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13156             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13157             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13158             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13159                 goto nla_put_failure;
13160
13161         genlmsg_end(msg, hdr);
13162
13163         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13164                                 NL80211_MCGRP_MLME, gfp);
13165         return;
13166
13167  nla_put_failure:
13168         genlmsg_cancel(msg, hdr);
13169         nlmsg_free(msg);
13170 }
13171
13172 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
13173                                struct net_device *netdev, const u8 *addr,
13174                                gfp_t gfp)
13175 {
13176         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
13177                                   addr, gfp);
13178 }
13179
13180 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
13181                                 struct net_device *netdev, const u8 *addr,
13182                                 gfp_t gfp)
13183 {
13184         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
13185                                   addr, gfp);
13186 }
13187
13188 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
13189                                  struct net_device *netdev, const u8 *bssid,
13190                                  const u8 *req_ie, size_t req_ie_len,
13191                                  const u8 *resp_ie, size_t resp_ie_len,
13192                                  int status, gfp_t gfp)
13193 {
13194         struct sk_buff *msg;
13195         void *hdr;
13196
13197         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13198         if (!msg)
13199                 return;
13200
13201         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
13202         if (!hdr) {
13203                 nlmsg_free(msg);
13204                 return;
13205         }
13206
13207         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13208             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13209             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
13210             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
13211                         status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
13212                         status) ||
13213             (status < 0 && nla_put_flag(msg, NL80211_ATTR_TIMED_OUT)) ||
13214             (req_ie &&
13215              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
13216             (resp_ie &&
13217              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
13218                 goto nla_put_failure;
13219
13220         genlmsg_end(msg, hdr);
13221
13222         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13223                                 NL80211_MCGRP_MLME, gfp);
13224         return;
13225
13226  nla_put_failure:
13227         genlmsg_cancel(msg, hdr);
13228         nlmsg_free(msg);
13229 }
13230
13231 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
13232                          struct net_device *netdev, const u8 *bssid,
13233                          const u8 *req_ie, size_t req_ie_len,
13234                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
13235 {
13236         struct sk_buff *msg;
13237         void *hdr;
13238
13239         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13240         if (!msg)
13241                 return;
13242
13243         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
13244         if (!hdr) {
13245                 nlmsg_free(msg);
13246                 return;
13247         }
13248
13249         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13250             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13251             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
13252             (req_ie &&
13253              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
13254             (resp_ie &&
13255              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
13256                 goto nla_put_failure;
13257
13258         genlmsg_end(msg, hdr);
13259
13260         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13261                                 NL80211_MCGRP_MLME, gfp);
13262         return;
13263
13264  nla_put_failure:
13265         genlmsg_cancel(msg, hdr);
13266         nlmsg_free(msg);
13267 }
13268
13269 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
13270                                struct net_device *netdev, u16 reason,
13271                                const u8 *ie, size_t ie_len, bool from_ap)
13272 {
13273         struct sk_buff *msg;
13274         void *hdr;
13275
13276         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13277         if (!msg)
13278                 return;
13279
13280         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
13281         if (!hdr) {
13282                 nlmsg_free(msg);
13283                 return;
13284         }
13285
13286         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13287             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13288             (from_ap && reason &&
13289              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
13290             (from_ap &&
13291              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
13292             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
13293                 goto nla_put_failure;
13294
13295         genlmsg_end(msg, hdr);
13296
13297         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13298                                 NL80211_MCGRP_MLME, GFP_KERNEL);
13299         return;
13300
13301  nla_put_failure:
13302         genlmsg_cancel(msg, hdr);
13303         nlmsg_free(msg);
13304 }
13305
13306 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
13307                              struct net_device *netdev, const u8 *bssid,
13308                              gfp_t gfp)
13309 {
13310         struct sk_buff *msg;
13311         void *hdr;
13312
13313         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13314         if (!msg)
13315                 return;
13316
13317         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
13318         if (!hdr) {
13319                 nlmsg_free(msg);
13320                 return;
13321         }
13322
13323         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13324             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13325             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13326                 goto nla_put_failure;
13327
13328         genlmsg_end(msg, hdr);
13329
13330         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13331                                 NL80211_MCGRP_MLME, gfp);
13332         return;
13333
13334  nla_put_failure:
13335         genlmsg_cancel(msg, hdr);
13336         nlmsg_free(msg);
13337 }
13338
13339 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
13340                                         const u8* ie, u8 ie_len, gfp_t gfp)
13341 {
13342         struct wireless_dev *wdev = dev->ieee80211_ptr;
13343         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13344         struct sk_buff *msg;
13345         void *hdr;
13346
13347         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
13348                 return;
13349
13350         trace_cfg80211_notify_new_peer_candidate(dev, addr);
13351
13352         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13353         if (!msg)
13354                 return;
13355
13356         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
13357         if (!hdr) {
13358                 nlmsg_free(msg);
13359                 return;
13360         }
13361
13362         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13363             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13364             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
13365             (ie_len && ie &&
13366              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
13367                 goto nla_put_failure;
13368
13369         genlmsg_end(msg, hdr);
13370
13371         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13372                                 NL80211_MCGRP_MLME, gfp);
13373         return;
13374
13375  nla_put_failure:
13376         genlmsg_cancel(msg, hdr);
13377         nlmsg_free(msg);
13378 }
13379 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
13380
13381 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
13382                                  struct net_device *netdev, const u8 *addr,
13383                                  enum nl80211_key_type key_type, int key_id,
13384                                  const u8 *tsc, gfp_t gfp)
13385 {
13386         struct sk_buff *msg;
13387         void *hdr;
13388
13389         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13390         if (!msg)
13391                 return;
13392
13393         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
13394         if (!hdr) {
13395                 nlmsg_free(msg);
13396                 return;
13397         }
13398
13399         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13400             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13401             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
13402             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
13403             (key_id != -1 &&
13404              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
13405             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
13406                 goto nla_put_failure;
13407
13408         genlmsg_end(msg, hdr);
13409
13410         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13411                                 NL80211_MCGRP_MLME, gfp);
13412         return;
13413
13414  nla_put_failure:
13415         genlmsg_cancel(msg, hdr);
13416         nlmsg_free(msg);
13417 }
13418
13419 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
13420                                     struct ieee80211_channel *channel_before,
13421                                     struct ieee80211_channel *channel_after)
13422 {
13423         struct sk_buff *msg;
13424         void *hdr;
13425         struct nlattr *nl_freq;
13426
13427         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
13428         if (!msg)
13429                 return;
13430
13431         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
13432         if (!hdr) {
13433                 nlmsg_free(msg);
13434                 return;
13435         }
13436
13437         /*
13438          * Since we are applying the beacon hint to a wiphy we know its
13439          * wiphy_idx is valid
13440          */
13441         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
13442                 goto nla_put_failure;
13443
13444         /* Before */
13445         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
13446         if (!nl_freq)
13447                 goto nla_put_failure;
13448         if (nl80211_msg_put_channel(msg, channel_before, false))
13449                 goto nla_put_failure;
13450         nla_nest_end(msg, nl_freq);
13451
13452         /* After */
13453         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
13454         if (!nl_freq)
13455                 goto nla_put_failure;
13456         if (nl80211_msg_put_channel(msg, channel_after, false))
13457                 goto nla_put_failure;
13458         nla_nest_end(msg, nl_freq);
13459
13460         genlmsg_end(msg, hdr);
13461
13462         rcu_read_lock();
13463         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13464                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13465         rcu_read_unlock();
13466
13467         return;
13468
13469 nla_put_failure:
13470         genlmsg_cancel(msg, hdr);
13471         nlmsg_free(msg);
13472 }
13473
13474 static void nl80211_send_remain_on_chan_event(
13475         int cmd, struct cfg80211_registered_device *rdev,
13476         struct wireless_dev *wdev, u64 cookie,
13477         struct ieee80211_channel *chan,
13478         unsigned int duration, gfp_t gfp)
13479 {
13480         struct sk_buff *msg;
13481         void *hdr;
13482
13483         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13484         if (!msg)
13485                 return;
13486
13487         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13488         if (!hdr) {
13489                 nlmsg_free(msg);
13490                 return;
13491         }
13492
13493         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13494             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13495                                          wdev->netdev->ifindex)) ||
13496             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13497                               NL80211_ATTR_PAD) ||
13498             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
13499             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
13500                         NL80211_CHAN_NO_HT) ||
13501             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13502                               NL80211_ATTR_PAD))
13503                 goto nla_put_failure;
13504
13505         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
13506             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
13507                 goto nla_put_failure;
13508
13509         genlmsg_end(msg, hdr);
13510
13511         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13512                                 NL80211_MCGRP_MLME, gfp);
13513         return;
13514
13515  nla_put_failure:
13516         genlmsg_cancel(msg, hdr);
13517         nlmsg_free(msg);
13518 }
13519
13520 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
13521                                struct ieee80211_channel *chan,
13522                                unsigned int duration, gfp_t gfp)
13523 {
13524         struct wiphy *wiphy = wdev->wiphy;
13525         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13526
13527         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
13528         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
13529                                           rdev, wdev, cookie, chan,
13530                                           duration, gfp);
13531 }
13532 EXPORT_SYMBOL(cfg80211_ready_on_channel);
13533
13534 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
13535                                         struct ieee80211_channel *chan,
13536                                         gfp_t gfp)
13537 {
13538         struct wiphy *wiphy = wdev->wiphy;
13539         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13540
13541         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
13542         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
13543                                           rdev, wdev, cookie, chan, 0, gfp);
13544 }
13545 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
13546
13547 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
13548                       struct station_info *sinfo, gfp_t gfp)
13549 {
13550         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13551         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13552         struct sk_buff *msg;
13553
13554         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
13555
13556         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13557         if (!msg)
13558                 return;
13559
13560         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
13561                                  rdev, dev, mac_addr, sinfo) < 0) {
13562                 nlmsg_free(msg);
13563                 return;
13564         }
13565
13566         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13567                                 NL80211_MCGRP_MLME, gfp);
13568 }
13569 EXPORT_SYMBOL(cfg80211_new_sta);
13570
13571 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
13572                             struct station_info *sinfo, gfp_t gfp)
13573 {
13574         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13575         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13576         struct sk_buff *msg;
13577         struct station_info empty_sinfo = {};
13578
13579         if (!sinfo)
13580                 sinfo = &empty_sinfo;
13581
13582         trace_cfg80211_del_sta(dev, mac_addr);
13583
13584         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13585         if (!msg)
13586                 return;
13587
13588         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
13589                                  rdev, dev, mac_addr, sinfo) < 0) {
13590                 nlmsg_free(msg);
13591                 return;
13592         }
13593
13594         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13595                                 NL80211_MCGRP_MLME, gfp);
13596 }
13597 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
13598
13599 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
13600                           enum nl80211_connect_failed_reason reason,
13601                           gfp_t gfp)
13602 {
13603         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13604         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13605         struct sk_buff *msg;
13606         void *hdr;
13607
13608         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
13609         if (!msg)
13610                 return;
13611
13612         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
13613         if (!hdr) {
13614                 nlmsg_free(msg);
13615                 return;
13616         }
13617
13618         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13619             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
13620             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
13621                 goto nla_put_failure;
13622
13623         genlmsg_end(msg, hdr);
13624
13625         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13626                                 NL80211_MCGRP_MLME, gfp);
13627         return;
13628
13629  nla_put_failure:
13630         genlmsg_cancel(msg, hdr);
13631         nlmsg_free(msg);
13632 }
13633 EXPORT_SYMBOL(cfg80211_conn_failed);
13634
13635 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
13636                                        const u8 *addr, gfp_t gfp)
13637 {
13638         struct wireless_dev *wdev = dev->ieee80211_ptr;
13639         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13640         struct sk_buff *msg;
13641         void *hdr;
13642         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
13643
13644         if (!nlportid)
13645                 return false;
13646
13647         msg = nlmsg_new(100, gfp);
13648         if (!msg)
13649                 return true;
13650
13651         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13652         if (!hdr) {
13653                 nlmsg_free(msg);
13654                 return true;
13655         }
13656
13657         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13658             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13659             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13660                 goto nla_put_failure;
13661
13662         genlmsg_end(msg, hdr);
13663         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13664         return true;
13665
13666  nla_put_failure:
13667         genlmsg_cancel(msg, hdr);
13668         nlmsg_free(msg);
13669         return true;
13670 }
13671
13672 bool cfg80211_rx_spurious_frame(struct net_device *dev,
13673                                 const u8 *addr, gfp_t gfp)
13674 {
13675         struct wireless_dev *wdev = dev->ieee80211_ptr;
13676         bool ret;
13677
13678         trace_cfg80211_rx_spurious_frame(dev, addr);
13679
13680         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
13681                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
13682                 trace_cfg80211_return_bool(false);
13683                 return false;
13684         }
13685         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
13686                                          addr, gfp);
13687         trace_cfg80211_return_bool(ret);
13688         return ret;
13689 }
13690 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
13691
13692 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
13693                                         const u8 *addr, gfp_t gfp)
13694 {
13695         struct wireless_dev *wdev = dev->ieee80211_ptr;
13696         bool ret;
13697
13698         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
13699
13700         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
13701                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
13702                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
13703                 trace_cfg80211_return_bool(false);
13704                 return false;
13705         }
13706         ret = __nl80211_unexpected_frame(dev,
13707                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
13708                                          addr, gfp);
13709         trace_cfg80211_return_bool(ret);
13710         return ret;
13711 }
13712 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
13713
13714 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
13715                       struct wireless_dev *wdev, u32 nlportid,
13716                       int freq, int sig_dbm,
13717                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
13718 {
13719         struct net_device *netdev = wdev->netdev;
13720         struct sk_buff *msg;
13721         void *hdr;
13722
13723         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13724         if (!msg)
13725                 return -ENOMEM;
13726
13727         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
13728         if (!hdr) {
13729                 nlmsg_free(msg);
13730                 return -ENOMEM;
13731         }
13732
13733         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13734             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13735                                         netdev->ifindex)) ||
13736             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13737                               NL80211_ATTR_PAD) ||
13738             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
13739             (sig_dbm &&
13740              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
13741             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
13742             (flags &&
13743              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
13744                 goto nla_put_failure;
13745
13746         genlmsg_end(msg, hdr);
13747
13748         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13749
13750  nla_put_failure:
13751         genlmsg_cancel(msg, hdr);
13752         nlmsg_free(msg);
13753         return -ENOBUFS;
13754 }
13755
13756 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
13757                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
13758 {
13759         struct wiphy *wiphy = wdev->wiphy;
13760         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13761         struct net_device *netdev = wdev->netdev;
13762         struct sk_buff *msg;
13763         void *hdr;
13764
13765         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
13766
13767         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13768         if (!msg)
13769                 return;
13770
13771         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
13772         if (!hdr) {
13773                 nlmsg_free(msg);
13774                 return;
13775         }
13776
13777         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13778             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13779                                    netdev->ifindex)) ||
13780             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13781                               NL80211_ATTR_PAD) ||
13782             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
13783             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13784                               NL80211_ATTR_PAD) ||
13785             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
13786                 goto nla_put_failure;
13787
13788         genlmsg_end(msg, hdr);
13789
13790         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13791                                 NL80211_MCGRP_MLME, gfp);
13792         return;
13793
13794  nla_put_failure:
13795         genlmsg_cancel(msg, hdr);
13796         nlmsg_free(msg);
13797 }
13798 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
13799
13800 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
13801                                             const char *mac, gfp_t gfp)
13802 {
13803         struct wireless_dev *wdev = dev->ieee80211_ptr;
13804         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13805         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13806         void **cb;
13807
13808         if (!msg)
13809                 return NULL;
13810
13811         cb = (void **)msg->cb;
13812
13813         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
13814         if (!cb[0]) {
13815                 nlmsg_free(msg);
13816                 return NULL;
13817         }
13818
13819         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13820             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13821                 goto nla_put_failure;
13822
13823         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
13824                 goto nla_put_failure;
13825
13826         cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
13827         if (!cb[1])
13828                 goto nla_put_failure;
13829
13830         cb[2] = rdev;
13831
13832         return msg;
13833  nla_put_failure:
13834         nlmsg_free(msg);
13835         return NULL;
13836 }
13837
13838 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
13839 {
13840         void **cb = (void **)msg->cb;
13841         struct cfg80211_registered_device *rdev = cb[2];
13842
13843         nla_nest_end(msg, cb[1]);
13844         genlmsg_end(msg, cb[0]);
13845
13846         memset(msg->cb, 0, sizeof(msg->cb));
13847
13848         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13849                                 NL80211_MCGRP_MLME, gfp);
13850 }
13851
13852 void cfg80211_cqm_rssi_notify(struct net_device *dev,
13853                               enum nl80211_cqm_rssi_threshold_event rssi_event,
13854                               gfp_t gfp)
13855 {
13856         struct sk_buff *msg;
13857
13858         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
13859
13860         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
13861                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
13862                 return;
13863
13864         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
13865         if (!msg)
13866                 return;
13867
13868         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
13869                         rssi_event))
13870                 goto nla_put_failure;
13871
13872         cfg80211_send_cqm(msg, gfp);
13873
13874         return;
13875
13876  nla_put_failure:
13877         nlmsg_free(msg);
13878 }
13879 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
13880
13881 void cfg80211_cqm_txe_notify(struct net_device *dev,
13882                              const u8 *peer, u32 num_packets,
13883                              u32 rate, u32 intvl, gfp_t gfp)
13884 {
13885         struct sk_buff *msg;
13886
13887         msg = cfg80211_prepare_cqm(dev, peer, gfp);
13888         if (!msg)
13889                 return;
13890
13891         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
13892                 goto nla_put_failure;
13893
13894         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
13895                 goto nla_put_failure;
13896
13897         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
13898                 goto nla_put_failure;
13899
13900         cfg80211_send_cqm(msg, gfp);
13901         return;
13902
13903  nla_put_failure:
13904         nlmsg_free(msg);
13905 }
13906 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
13907
13908 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
13909                                  const u8 *peer, u32 num_packets, gfp_t gfp)
13910 {
13911         struct sk_buff *msg;
13912
13913         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
13914
13915         msg = cfg80211_prepare_cqm(dev, peer, gfp);
13916         if (!msg)
13917                 return;
13918
13919         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
13920                 goto nla_put_failure;
13921
13922         cfg80211_send_cqm(msg, gfp);
13923         return;
13924
13925  nla_put_failure:
13926         nlmsg_free(msg);
13927 }
13928 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
13929
13930 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
13931 {
13932         struct sk_buff *msg;
13933
13934         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
13935         if (!msg)
13936                 return;
13937
13938         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
13939                 goto nla_put_failure;
13940
13941         cfg80211_send_cqm(msg, gfp);
13942         return;
13943
13944  nla_put_failure:
13945         nlmsg_free(msg);
13946 }
13947 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
13948
13949 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
13950                                      struct net_device *netdev, const u8 *bssid,
13951                                      const u8 *replay_ctr, gfp_t gfp)
13952 {
13953         struct sk_buff *msg;
13954         struct nlattr *rekey_attr;
13955         void *hdr;
13956
13957         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13958         if (!msg)
13959                 return;
13960
13961         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
13962         if (!hdr) {
13963                 nlmsg_free(msg);
13964                 return;
13965         }
13966
13967         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13968             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13969             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13970                 goto nla_put_failure;
13971
13972         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
13973         if (!rekey_attr)
13974                 goto nla_put_failure;
13975
13976         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
13977                     NL80211_REPLAY_CTR_LEN, replay_ctr))
13978                 goto nla_put_failure;
13979
13980         nla_nest_end(msg, rekey_attr);
13981
13982         genlmsg_end(msg, hdr);
13983
13984         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13985                                 NL80211_MCGRP_MLME, gfp);
13986         return;
13987
13988  nla_put_failure:
13989         genlmsg_cancel(msg, hdr);
13990         nlmsg_free(msg);
13991 }
13992
13993 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
13994                                const u8 *replay_ctr, gfp_t gfp)
13995 {
13996         struct wireless_dev *wdev = dev->ieee80211_ptr;
13997         struct wiphy *wiphy = wdev->wiphy;
13998         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13999
14000         trace_cfg80211_gtk_rekey_notify(dev, bssid);
14001         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
14002 }
14003 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
14004
14005 static void
14006 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
14007                                struct net_device *netdev, int index,
14008                                const u8 *bssid, bool preauth, gfp_t gfp)
14009 {
14010         struct sk_buff *msg;
14011         struct nlattr *attr;
14012         void *hdr;
14013
14014         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14015         if (!msg)
14016                 return;
14017
14018         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
14019         if (!hdr) {
14020                 nlmsg_free(msg);
14021                 return;
14022         }
14023
14024         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14025             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14026                 goto nla_put_failure;
14027
14028         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
14029         if (!attr)
14030                 goto nla_put_failure;
14031
14032         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
14033             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
14034             (preauth &&
14035              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
14036                 goto nla_put_failure;
14037
14038         nla_nest_end(msg, attr);
14039
14040         genlmsg_end(msg, hdr);
14041
14042         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14043                                 NL80211_MCGRP_MLME, gfp);
14044         return;
14045
14046  nla_put_failure:
14047         genlmsg_cancel(msg, hdr);
14048         nlmsg_free(msg);
14049 }
14050
14051 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
14052                                      const u8 *bssid, bool preauth, gfp_t gfp)
14053 {
14054         struct wireless_dev *wdev = dev->ieee80211_ptr;
14055         struct wiphy *wiphy = wdev->wiphy;
14056         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14057
14058         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
14059         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
14060 }
14061 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
14062
14063 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
14064                                      struct net_device *netdev,
14065                                      struct cfg80211_chan_def *chandef,
14066                                      gfp_t gfp,
14067                                      enum nl80211_commands notif,
14068                                      u8 count)
14069 {
14070         struct sk_buff *msg;
14071         void *hdr;
14072
14073         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14074         if (!msg)
14075                 return;
14076
14077         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
14078         if (!hdr) {
14079                 nlmsg_free(msg);
14080                 return;
14081         }
14082
14083         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14084                 goto nla_put_failure;
14085
14086         if (nl80211_send_chandef(msg, chandef))
14087                 goto nla_put_failure;
14088
14089         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
14090             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
14091                         goto nla_put_failure;
14092
14093         genlmsg_end(msg, hdr);
14094
14095         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14096                                 NL80211_MCGRP_MLME, gfp);
14097         return;
14098
14099  nla_put_failure:
14100         genlmsg_cancel(msg, hdr);
14101         nlmsg_free(msg);
14102 }
14103
14104 void cfg80211_ch_switch_notify(struct net_device *dev,
14105                                struct cfg80211_chan_def *chandef)
14106 {
14107         struct wireless_dev *wdev = dev->ieee80211_ptr;
14108         struct wiphy *wiphy = wdev->wiphy;
14109         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14110
14111         ASSERT_WDEV_LOCK(wdev);
14112
14113         trace_cfg80211_ch_switch_notify(dev, chandef);
14114
14115         wdev->chandef = *chandef;
14116         wdev->preset_chandef = *chandef;
14117         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14118                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
14119 }
14120 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
14121
14122 void cfg80211_ch_switch_started_notify(struct net_device *dev,
14123                                        struct cfg80211_chan_def *chandef,
14124                                        u8 count)
14125 {
14126         struct wireless_dev *wdev = dev->ieee80211_ptr;
14127         struct wiphy *wiphy = wdev->wiphy;
14128         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14129
14130         trace_cfg80211_ch_switch_started_notify(dev, chandef);
14131
14132         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14133                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
14134 }
14135 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
14136
14137 void
14138 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
14139                      const struct cfg80211_chan_def *chandef,
14140                      enum nl80211_radar_event event,
14141                      struct net_device *netdev, gfp_t gfp)
14142 {
14143         struct sk_buff *msg;
14144         void *hdr;
14145
14146         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14147         if (!msg)
14148                 return;
14149
14150         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
14151         if (!hdr) {
14152                 nlmsg_free(msg);
14153                 return;
14154         }
14155
14156         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
14157                 goto nla_put_failure;
14158
14159         /* NOP and radar events don't need a netdev parameter */
14160         if (netdev) {
14161                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
14162
14163                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14164                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14165                                       NL80211_ATTR_PAD))
14166                         goto nla_put_failure;
14167         }
14168
14169         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
14170                 goto nla_put_failure;
14171
14172         if (nl80211_send_chandef(msg, chandef))
14173                 goto nla_put_failure;
14174
14175         genlmsg_end(msg, hdr);
14176
14177         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14178                                 NL80211_MCGRP_MLME, gfp);
14179         return;
14180
14181  nla_put_failure:
14182         genlmsg_cancel(msg, hdr);
14183         nlmsg_free(msg);
14184 }
14185
14186 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
14187                            u64 cookie, bool acked, gfp_t gfp)
14188 {
14189         struct wireless_dev *wdev = dev->ieee80211_ptr;
14190         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14191         struct sk_buff *msg;
14192         void *hdr;
14193
14194         trace_cfg80211_probe_status(dev, addr, cookie, acked);
14195
14196         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14197
14198         if (!msg)
14199                 return;
14200
14201         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
14202         if (!hdr) {
14203                 nlmsg_free(msg);
14204                 return;
14205         }
14206
14207         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14208             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14209             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14210             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14211                               NL80211_ATTR_PAD) ||
14212             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
14213                 goto nla_put_failure;
14214
14215         genlmsg_end(msg, hdr);
14216
14217         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14218                                 NL80211_MCGRP_MLME, gfp);
14219         return;
14220
14221  nla_put_failure:
14222         genlmsg_cancel(msg, hdr);
14223         nlmsg_free(msg);
14224 }
14225 EXPORT_SYMBOL(cfg80211_probe_status);
14226
14227 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
14228                                  const u8 *frame, size_t len,
14229                                  int freq, int sig_dbm)
14230 {
14231         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14232         struct sk_buff *msg;
14233         void *hdr;
14234         struct cfg80211_beacon_registration *reg;
14235
14236         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
14237
14238         spin_lock_bh(&rdev->beacon_registrations_lock);
14239         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14240                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
14241                 if (!msg) {
14242                         spin_unlock_bh(&rdev->beacon_registrations_lock);
14243                         return;
14244                 }
14245
14246                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14247                 if (!hdr)
14248                         goto nla_put_failure;
14249
14250                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14251                     (freq &&
14252                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
14253                     (sig_dbm &&
14254                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14255                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
14256                         goto nla_put_failure;
14257
14258                 genlmsg_end(msg, hdr);
14259
14260                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
14261         }
14262         spin_unlock_bh(&rdev->beacon_registrations_lock);
14263         return;
14264
14265  nla_put_failure:
14266         spin_unlock_bh(&rdev->beacon_registrations_lock);
14267         if (hdr)
14268                 genlmsg_cancel(msg, hdr);
14269         nlmsg_free(msg);
14270 }
14271 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
14272
14273 #ifdef CONFIG_PM
14274 static int cfg80211_net_detect_results(struct sk_buff *msg,
14275                                        struct cfg80211_wowlan_wakeup *wakeup)
14276 {
14277         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
14278         struct nlattr *nl_results, *nl_match, *nl_freqs;
14279         int i, j;
14280
14281         nl_results = nla_nest_start(
14282                 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
14283         if (!nl_results)
14284                 return -EMSGSIZE;
14285
14286         for (i = 0; i < nd->n_matches; i++) {
14287                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
14288
14289                 nl_match = nla_nest_start(msg, i);
14290                 if (!nl_match)
14291                         break;
14292
14293                 /* The SSID attribute is optional in nl80211, but for
14294                  * simplicity reasons it's always present in the
14295                  * cfg80211 structure.  If a driver can't pass the
14296                  * SSID, that needs to be changed.  A zero length SSID
14297                  * is still a valid SSID (wildcard), so it cannot be
14298                  * used for this purpose.
14299                  */
14300                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
14301                             match->ssid.ssid)) {
14302                         nla_nest_cancel(msg, nl_match);
14303                         goto out;
14304                 }
14305
14306                 if (match->n_channels) {
14307                         nl_freqs = nla_nest_start(
14308                                 msg, NL80211_ATTR_SCAN_FREQUENCIES);
14309                         if (!nl_freqs) {
14310                                 nla_nest_cancel(msg, nl_match);
14311                                 goto out;
14312                         }
14313
14314                         for (j = 0; j < match->n_channels; j++) {
14315                                 if (nla_put_u32(msg, j, match->channels[j])) {
14316                                         nla_nest_cancel(msg, nl_freqs);
14317                                         nla_nest_cancel(msg, nl_match);
14318                                         goto out;
14319                                 }
14320                         }
14321
14322                         nla_nest_end(msg, nl_freqs);
14323                 }
14324
14325                 nla_nest_end(msg, nl_match);
14326         }
14327
14328 out:
14329         nla_nest_end(msg, nl_results);
14330         return 0;
14331 }
14332
14333 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
14334                                    struct cfg80211_wowlan_wakeup *wakeup,
14335                                    gfp_t gfp)
14336 {
14337         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14338         struct sk_buff *msg;
14339         void *hdr;
14340         int size = 200;
14341
14342         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
14343
14344         if (wakeup)
14345                 size += wakeup->packet_present_len;
14346
14347         msg = nlmsg_new(size, gfp);
14348         if (!msg)
14349                 return;
14350
14351         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
14352         if (!hdr)
14353                 goto free_msg;
14354
14355         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14356             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14357                               NL80211_ATTR_PAD))
14358                 goto free_msg;
14359
14360         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14361                                         wdev->netdev->ifindex))
14362                 goto free_msg;
14363
14364         if (wakeup) {
14365                 struct nlattr *reasons;
14366
14367                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
14368                 if (!reasons)
14369                         goto free_msg;
14370
14371                 if (wakeup->disconnect &&
14372                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
14373                         goto free_msg;
14374                 if (wakeup->magic_pkt &&
14375                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
14376                         goto free_msg;
14377                 if (wakeup->gtk_rekey_failure &&
14378                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
14379                         goto free_msg;
14380                 if (wakeup->eap_identity_req &&
14381                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
14382                         goto free_msg;
14383                 if (wakeup->four_way_handshake &&
14384                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
14385                         goto free_msg;
14386                 if (wakeup->rfkill_release &&
14387                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
14388                         goto free_msg;
14389
14390                 if (wakeup->pattern_idx >= 0 &&
14391                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
14392                                 wakeup->pattern_idx))
14393                         goto free_msg;
14394
14395                 if (wakeup->tcp_match &&
14396                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
14397                         goto free_msg;
14398
14399                 if (wakeup->tcp_connlost &&
14400                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
14401                         goto free_msg;
14402
14403                 if (wakeup->tcp_nomoretokens &&
14404                     nla_put_flag(msg,
14405                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
14406                         goto free_msg;
14407
14408                 if (wakeup->packet) {
14409                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
14410                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
14411
14412                         if (!wakeup->packet_80211) {
14413                                 pkt_attr =
14414                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
14415                                 len_attr =
14416                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
14417                         }
14418
14419                         if (wakeup->packet_len &&
14420                             nla_put_u32(msg, len_attr, wakeup->packet_len))
14421                                 goto free_msg;
14422
14423                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
14424                                     wakeup->packet))
14425                                 goto free_msg;
14426                 }
14427
14428                 if (wakeup->net_detect &&
14429                     cfg80211_net_detect_results(msg, wakeup))
14430                                 goto free_msg;
14431
14432                 nla_nest_end(msg, reasons);
14433         }
14434
14435         genlmsg_end(msg, hdr);
14436
14437         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14438                                 NL80211_MCGRP_MLME, gfp);
14439         return;
14440
14441  free_msg:
14442         nlmsg_free(msg);
14443 }
14444 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
14445 #endif
14446
14447 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
14448                                 enum nl80211_tdls_operation oper,
14449                                 u16 reason_code, gfp_t gfp)
14450 {
14451         struct wireless_dev *wdev = dev->ieee80211_ptr;
14452         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14453         struct sk_buff *msg;
14454         void *hdr;
14455
14456         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
14457                                          reason_code);
14458
14459         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14460         if (!msg)
14461                 return;
14462
14463         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
14464         if (!hdr) {
14465                 nlmsg_free(msg);
14466                 return;
14467         }
14468
14469         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14470             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14471             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
14472             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
14473             (reason_code > 0 &&
14474              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
14475                 goto nla_put_failure;
14476
14477         genlmsg_end(msg, hdr);
14478
14479         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14480                                 NL80211_MCGRP_MLME, gfp);
14481         return;
14482
14483  nla_put_failure:
14484         genlmsg_cancel(msg, hdr);
14485         nlmsg_free(msg);
14486 }
14487 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
14488
14489 static int nl80211_netlink_notify(struct notifier_block * nb,
14490                                   unsigned long state,
14491                                   void *_notify)
14492 {
14493         struct netlink_notify *notify = _notify;
14494         struct cfg80211_registered_device *rdev;
14495         struct wireless_dev *wdev;
14496         struct cfg80211_beacon_registration *reg, *tmp;
14497
14498         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
14499                 return NOTIFY_DONE;
14500
14501         rcu_read_lock();
14502
14503         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
14504                 bool schedule_destroy_work = false;
14505                 struct cfg80211_sched_scan_request *sched_scan_req =
14506                         rcu_dereference(rdev->sched_scan_req);
14507
14508                 if (sched_scan_req && notify->portid &&
14509                     sched_scan_req->owner_nlportid == notify->portid) {
14510                         sched_scan_req->owner_nlportid = 0;
14511
14512                         if (rdev->ops->sched_scan_stop &&
14513                             rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
14514                                 schedule_work(&rdev->sched_scan_stop_wk);
14515                 }
14516
14517                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
14518                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
14519
14520                         if (wdev->owner_nlportid == notify->portid)
14521                                 schedule_destroy_work = true;
14522                 }
14523
14524                 spin_lock_bh(&rdev->beacon_registrations_lock);
14525                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
14526                                          list) {
14527                         if (reg->nlportid == notify->portid) {
14528                                 list_del(&reg->list);
14529                                 kfree(reg);
14530                                 break;
14531                         }
14532                 }
14533                 spin_unlock_bh(&rdev->beacon_registrations_lock);
14534
14535                 if (schedule_destroy_work) {
14536                         struct cfg80211_iface_destroy *destroy;
14537
14538                         destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
14539                         if (destroy) {
14540                                 destroy->nlportid = notify->portid;
14541                                 spin_lock(&rdev->destroy_list_lock);
14542                                 list_add(&destroy->list, &rdev->destroy_list);
14543                                 spin_unlock(&rdev->destroy_list_lock);
14544                                 schedule_work(&rdev->destroy_work);
14545                         }
14546                 }
14547         }
14548
14549         rcu_read_unlock();
14550
14551         /*
14552          * It is possible that the user space process that is controlling the
14553          * indoor setting disappeared, so notify the regulatory core.
14554          */
14555         regulatory_netlink_notify(notify->portid);
14556         return NOTIFY_OK;
14557 }
14558
14559 static struct notifier_block nl80211_netlink_notifier = {
14560         .notifier_call = nl80211_netlink_notify,
14561 };
14562
14563 void cfg80211_ft_event(struct net_device *netdev,
14564                        struct cfg80211_ft_event_params *ft_event)
14565 {
14566         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
14567         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14568         struct sk_buff *msg;
14569         void *hdr;
14570
14571         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
14572
14573         if (!ft_event->target_ap)
14574                 return;
14575
14576         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14577         if (!msg)
14578                 return;
14579
14580         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
14581         if (!hdr)
14582                 goto out;
14583
14584         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14585             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14586             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
14587                 goto out;
14588
14589         if (ft_event->ies &&
14590             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
14591                 goto out;
14592         if (ft_event->ric_ies &&
14593             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
14594                     ft_event->ric_ies))
14595                 goto out;
14596
14597         genlmsg_end(msg, hdr);
14598
14599         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14600                                 NL80211_MCGRP_MLME, GFP_KERNEL);
14601         return;
14602  out:
14603         nlmsg_free(msg);
14604 }
14605 EXPORT_SYMBOL(cfg80211_ft_event);
14606
14607 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
14608 {
14609         struct cfg80211_registered_device *rdev;
14610         struct sk_buff *msg;
14611         void *hdr;
14612         u32 nlportid;
14613
14614         rdev = wiphy_to_rdev(wdev->wiphy);
14615         if (!rdev->crit_proto_nlportid)
14616                 return;
14617
14618         nlportid = rdev->crit_proto_nlportid;
14619         rdev->crit_proto_nlportid = 0;
14620
14621         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14622         if (!msg)
14623                 return;
14624
14625         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
14626         if (!hdr)
14627                 goto nla_put_failure;
14628
14629         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14630             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14631                               NL80211_ATTR_PAD))
14632                 goto nla_put_failure;
14633
14634         genlmsg_end(msg, hdr);
14635
14636         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14637         return;
14638
14639  nla_put_failure:
14640         if (hdr)
14641                 genlmsg_cancel(msg, hdr);
14642         nlmsg_free(msg);
14643 }
14644 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
14645
14646 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
14647 {
14648         struct wiphy *wiphy = wdev->wiphy;
14649         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14650         struct sk_buff *msg;
14651         void *hdr;
14652
14653         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14654         if (!msg)
14655                 return;
14656
14657         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
14658         if (!hdr)
14659                 goto out;
14660
14661         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14662             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
14663             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14664                               NL80211_ATTR_PAD))
14665                 goto out;
14666
14667         genlmsg_end(msg, hdr);
14668
14669         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
14670                                 NL80211_MCGRP_MLME, GFP_KERNEL);
14671         return;
14672  out:
14673         nlmsg_free(msg);
14674 }
14675
14676 /* initialisation/exit functions */
14677
14678 int __init nl80211_init(void)
14679 {
14680         int err;
14681
14682         err = genl_register_family(&nl80211_fam);
14683         if (err)
14684                 return err;
14685
14686         err = netlink_register_notifier(&nl80211_netlink_notifier);
14687         if (err)
14688                 goto err_out;
14689
14690         return 0;
14691  err_out:
14692         genl_unregister_family(&nl80211_fam);
14693         return err;
14694 }
14695
14696 void nl80211_exit(void)
14697 {
14698         netlink_unregister_notifier(&nl80211_netlink_notifier);
14699         genl_unregister_family(&nl80211_fam);
14700 }