drivers/net/wireless/mac80211_hwsim.c

   1 /*
   2  * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
   3  * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
   5  * Copyright (c) 2016 - 2017 Intel Deutschland GmbH
   6  * Copyright (C) 2018 Intel Corporation
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 /*
  14  * TODO:
  15  * - Add TSF sync and fix IBSS beacon transmission by adding
  16  *   competition for "air time" at TBTT
  17  * - RX filtering based on filter configuration (data->rx_filter)
  18  */
  19
  20 #include <linux/list.h>
  21 #include <linux/slab.h>
  22 #include <linux/spinlock.h>
  23 #include <net/dst.h>
  24 #include <net/xfrm.h>
  25 #include <net/mac80211.h>
  26 #include <net/ieee80211_radiotap.h>
  27 #include <linux/if_arp.h>
  28 #include <linux/rtnetlink.h>
  29 #include <linux/etherdevice.h>
  30 #include <linux/platform_device.h>
  31 #include <linux/debugfs.h>
  32 #include <linux/module.h>
  33 #include <linux/ktime.h>
  34 #include <net/genetlink.h>
  35 #include <net/net_namespace.h>
  36 #include <net/netns/generic.h>
  37 #include <linux/rhashtable.h>
  38 #include <linux/nospec.h>
  39 #include "mac80211_hwsim.h"
  40
  41 #define WARN_QUEUE 100
  42 #define MAX_QUEUE 200
  43
  44 MODULE_AUTHOR("Jouni Malinen");
  45 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  46 MODULE_LICENSE("GPL");
  47
  48 static int radios = 2;
  49 module_param(radios, int, 0444);
  50 MODULE_PARM_DESC(radios, "Number of simulated radios");
  51
  52 static int channels = 1;
  53 module_param(channels, int, 0444);
  54 MODULE_PARM_DESC(channels, "Number of concurrent channels");
  55
  56 static bool paged_rx = false;
  57 module_param(paged_rx, bool, 0644);
  58 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
  59
  60 static bool rctbl = false;
  61 module_param(rctbl, bool, 0444);
  62 MODULE_PARM_DESC(rctbl, "Handle rate control table");
  63
  64 static bool support_p2p_device = true;
  65 module_param(support_p2p_device, bool, 0444);
  66 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
  67
  68 /**
  69  * enum hwsim_regtest - the type of regulatory tests we offer
  70  *
  71  * These are the different values you can use for the regtest
  72  * module parameter. This is useful to help test world roaming
  73  * and the driver regulatory_hint() call and combinations of these.
  74  * If you want to do specific alpha2 regulatory domain tests simply
  75  * use the userspace regulatory request as that will be respected as
  76  * well without the need of this module parameter. This is designed
  77  * only for testing the driver regulatory request, world roaming
  78  * and all possible combinations.
  79  *
  80  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  81  *      this is the default value.
  82  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  83  *      hint, only one driver regulatory hint will be sent as such the
  84  *      secondary radios are expected to follow.
  85  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  86  *      request with all radios reporting the same regulatory domain.
  87  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  88  *      different regulatory domains requests. Expected behaviour is for
  89  *      an intersection to occur but each device will still use their
  90  *      respective regulatory requested domains. Subsequent radios will
  91  *      use the resulting intersection.
  92  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  93  *      this by using a custom beacon-capable regulatory domain for the first
  94  *      radio. All other device world roam.
  95  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  96  *      domain requests. All radios will adhere to this custom world regulatory
  97  *      domain.
  98  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  99  *      domain requests. The first radio will adhere to the first custom world
 100  *      regulatory domain, the second one to the second custom world regulatory
 101  *      domain. All other devices will world roam.
 102  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
 103  *      settings, only the first radio will send a regulatory domain request
 104  *      and use strict settings. The rest of the radios are expected to follow.
 105  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
 106  *      settings. All radios will adhere to this.
 107  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
 108  *      domain settings, combined with secondary driver regulatory domain
 109  *      settings. The first radio will get a strict regulatory domain setting
 110  *      using the first driver regulatory request and the second radio will use
 111  *      non-strict settings using the second driver regulatory request. All
 112  *      other devices should follow the intersection created between the
 113  *      first two.
 114  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
 115  *      at least 6 radios for a complete test. We will test in this order:
 116  *      1 - driver custom world regulatory domain
 117  *      2 - second custom world regulatory domain
 118  *      3 - first driver regulatory domain request
 119  *      4 - second driver regulatory domain request
 120  *      5 - strict regulatory domain settings using the third driver regulatory
 121  *          domain request
 122  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 123  *                 regulatory requests.
 124  */
 125 enum hwsim_regtest {
 126         HWSIM_REGTEST_DISABLED = 0,
 127         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 128         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 129         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 130         HWSIM_REGTEST_WORLD_ROAM = 4,
 131         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 132         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 133         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 134         HWSIM_REGTEST_STRICT_ALL = 8,
 135         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 136         HWSIM_REGTEST_ALL = 10,
 137 };
 138
 139 /* Set to one of the HWSIM_REGTEST_* values above */
 140 static int regtest = HWSIM_REGTEST_DISABLED;
 141 module_param(regtest, int, 0444);
 142 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 143
 144 static const char *hwsim_alpha2s[] = {
 145         "FI",
 146         "AL",
 147         "US",
 148         "DE",
 149         "JP",
 150         "AL",
 151 };
 152
 153 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 154         .n_reg_rules = 4,
 155         .alpha2 =  "99",
 156         .reg_rules = {
 157                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 158                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 159                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 160                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 161         }
 162 };
 163
 164 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 165         .n_reg_rules = 2,
 166         .alpha2 =  "99",
 167         .reg_rules = {
 168                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 169                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 170                          NL80211_RRF_NO_IR),
 171         }
 172 };
 173
 174 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
 175         &hwsim_world_regdom_custom_01,
 176         &hwsim_world_regdom_custom_02,
 177 };
 178
 179 struct hwsim_vif_priv {
 180         u32 magic;
 181         u8 bssid[ETH_ALEN];
 182         bool assoc;
 183         bool bcn_en;
 184         u16 aid;
 185 };
 186
 187 #define HWSIM_VIF_MAGIC 0x69537748
 188
 189 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 190 {
 191         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 192         WARN(vp->magic != HWSIM_VIF_MAGIC,
 193              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 194              vif, vp->magic, vif->addr, vif->type, vif->p2p);
 195 }
 196
 197 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 198 {
 199         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 200         vp->magic = HWSIM_VIF_MAGIC;
 201 }
 202
 203 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 204 {
 205         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 206         vp->magic = 0;
 207 }
 208
 209 struct hwsim_sta_priv {
 210         u32 magic;
 211 };
 212
 213 #define HWSIM_STA_MAGIC 0x6d537749
 214
 215 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 216 {
 217         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 218         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 219 }
 220
 221 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 222 {
 223         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 224         sp->magic = HWSIM_STA_MAGIC;
 225 }
 226
 227 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 228 {
 229         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 230         sp->magic = 0;
 231 }
 232
 233 struct hwsim_chanctx_priv {
 234         u32 magic;
 235 };
 236
 237 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
 238
 239 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 240 {
 241         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 242         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 243 }
 244
 245 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 246 {
 247         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 248         cp->magic = HWSIM_CHANCTX_MAGIC;
 249 }
 250
 251 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 252 {
 253         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 254         cp->magic = 0;
 255 }
 256
 257 static unsigned int hwsim_net_id;
 258
 259 static DEFINE_IDA(hwsim_netgroup_ida);
 260
 261 struct hwsim_net {
 262         int netgroup;
 263         u32 wmediumd;
 264 };
 265
 266 static inline int hwsim_net_get_netgroup(struct net *net)
 267 {
 268         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 269
 270         return hwsim_net->netgroup;
 271 }
 272
 273 static inline int hwsim_net_set_netgroup(struct net *net)
 274 {
 275         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 276
 277         hwsim_net->netgroup = ida_simple_get(&hwsim_netgroup_ida,
 278                                              0, 0, GFP_KERNEL);
 279         return hwsim_net->netgroup >= 0 ? 0 : -ENOMEM;
 280 }
 281
 282 static inline u32 hwsim_net_get_wmediumd(struct net *net)
 283 {
 284         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 285
 286         return hwsim_net->wmediumd;
 287 }
 288
 289 static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
 290 {
 291         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 292
 293         hwsim_net->wmediumd = portid;
 294 }
 295
 296 static struct class *hwsim_class;
 297
 298 static struct net_device *hwsim_mon; /* global monitor netdev */
 299
 300 #define CHAN2G(_freq)  { \
 301         .band = NL80211_BAND_2GHZ, \
 302         .center_freq = (_freq), \
 303         .hw_value = (_freq), \
 304         .max_power = 20, \
 305 }
 306
 307 #define CHAN5G(_freq) { \
 308         .band = NL80211_BAND_5GHZ, \
 309         .center_freq = (_freq), \
 310         .hw_value = (_freq), \
 311         .max_power = 20, \
 312 }
 313
 314 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 315         CHAN2G(2412), /* Channel 1 */
 316         CHAN2G(2417), /* Channel 2 */
 317         CHAN2G(2422), /* Channel 3 */
 318         CHAN2G(2427), /* Channel 4 */
 319         CHAN2G(2432), /* Channel 5 */
 320         CHAN2G(2437), /* Channel 6 */
 321         CHAN2G(2442), /* Channel 7 */
 322         CHAN2G(2447), /* Channel 8 */
 323         CHAN2G(2452), /* Channel 9 */
 324         CHAN2G(2457), /* Channel 10 */
 325         CHAN2G(2462), /* Channel 11 */
 326         CHAN2G(2467), /* Channel 12 */
 327         CHAN2G(2472), /* Channel 13 */
 328         CHAN2G(2484), /* Channel 14 */
 329 };
 330
 331 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 332         CHAN5G(5180), /* Channel 36 */
 333         CHAN5G(5200), /* Channel 40 */
 334         CHAN5G(5220), /* Channel 44 */
 335         CHAN5G(5240), /* Channel 48 */
 336
 337         CHAN5G(5260), /* Channel 52 */
 338         CHAN5G(5280), /* Channel 56 */
 339         CHAN5G(5300), /* Channel 60 */
 340         CHAN5G(5320), /* Channel 64 */
 341
 342         CHAN5G(5500), /* Channel 100 */
 343         CHAN5G(5520), /* Channel 104 */
 344         CHAN5G(5540), /* Channel 108 */
 345         CHAN5G(5560), /* Channel 112 */
 346         CHAN5G(5580), /* Channel 116 */
 347         CHAN5G(5600), /* Channel 120 */
 348         CHAN5G(5620), /* Channel 124 */
 349         CHAN5G(5640), /* Channel 128 */
 350         CHAN5G(5660), /* Channel 132 */
 351         CHAN5G(5680), /* Channel 136 */
 352         CHAN5G(5700), /* Channel 140 */
 353
 354         CHAN5G(5745), /* Channel 149 */
 355         CHAN5G(5765), /* Channel 153 */
 356         CHAN5G(5785), /* Channel 157 */
 357         CHAN5G(5805), /* Channel 161 */
 358         CHAN5G(5825), /* Channel 165 */
 359         CHAN5G(5845), /* Channel 169 */
 360 };
 361
 362 static const struct ieee80211_rate hwsim_rates[] = {
 363         { .bitrate = 10 },
 364         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 365         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 366         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 367         { .bitrate = 60 },
 368         { .bitrate = 90 },
 369         { .bitrate = 120 },
 370         { .bitrate = 180 },
 371         { .bitrate = 240 },
 372         { .bitrate = 360 },
 373         { .bitrate = 480 },
 374         { .bitrate = 540 }
 375 };
 376
 377 static const u32 hwsim_ciphers[] = {
 378         WLAN_CIPHER_SUITE_WEP40,
 379         WLAN_CIPHER_SUITE_WEP104,
 380         WLAN_CIPHER_SUITE_TKIP,
 381         WLAN_CIPHER_SUITE_CCMP,
 382         WLAN_CIPHER_SUITE_CCMP_256,
 383         WLAN_CIPHER_SUITE_GCMP,
 384         WLAN_CIPHER_SUITE_GCMP_256,
 385         WLAN_CIPHER_SUITE_AES_CMAC,
 386         WLAN_CIPHER_SUITE_BIP_CMAC_256,
 387         WLAN_CIPHER_SUITE_BIP_GMAC_128,
 388         WLAN_CIPHER_SUITE_BIP_GMAC_256,
 389 };
 390
 391 #define OUI_QCA 0x001374
 392 #define QCA_NL80211_SUBCMD_TEST 1
 393 enum qca_nl80211_vendor_subcmds {
 394         QCA_WLAN_VENDOR_ATTR_TEST = 8,
 395         QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
 396 };
 397
 398 static const struct nla_policy
 399 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
 400         [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
 401 };
 402
 403 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
 404                                           struct wireless_dev *wdev,
 405                                           const void *data, int data_len)
 406 {
 407         struct sk_buff *skb;
 408         struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 409         int err;
 410         u32 val;
 411
 412         err = nla_parse(tb, QCA_WLAN_VENDOR_ATTR_MAX, data, data_len,
 413                         hwsim_vendor_test_policy, NULL);
 414         if (err)
 415                 return err;
 416         if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
 417                 return -EINVAL;
 418         val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
 419         wiphy_dbg(wiphy, "%s: test=%u\n", __func__, val);
 420
 421         /* Send a vendor event as a test. Note that this would not normally be
 422          * done within a command handler, but rather, based on some other
 423          * trigger. For simplicity, this command is used to trigger the event
 424          * here.
 425          *
 426          * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
 427          */
 428         skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
 429         if (skb) {
 430                 /* skb_put() or nla_put() will fill up data within
 431                  * NL80211_ATTR_VENDOR_DATA.
 432                  */
 433
 434                 /* Add vendor data */
 435                 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
 436
 437                 /* Send the event - this will call nla_nest_end() */
 438                 cfg80211_vendor_event(skb, GFP_KERNEL);
 439         }
 440
 441         /* Send a response to the command */
 442         skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
 443         if (!skb)
 444                 return -ENOMEM;
 445
 446         /* skb_put() or nla_put() will fill up data within
 447          * NL80211_ATTR_VENDOR_DATA
 448          */
 449         nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
 450
 451         return cfg80211_vendor_cmd_reply(skb);
 452 }
 453
 454 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
 455         {
 456                 .info = { .vendor_id = OUI_QCA,
 457                           .subcmd = QCA_NL80211_SUBCMD_TEST },
 458                 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
 459                 .doit = mac80211_hwsim_vendor_cmd_test,
 460         }
 461 };
 462
 463 /* Advertise support vendor specific events */
 464 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
 465         { .vendor_id = OUI_QCA, .subcmd = 1 },
 466 };
 467
 468 static spinlock_t hwsim_radio_lock;
 469 static LIST_HEAD(hwsim_radios);
 470 static struct rhashtable hwsim_radios_rht;
 471 static int hwsim_radio_idx;
 472 static int hwsim_radios_generation = 1;
 473
 474 static struct platform_driver mac80211_hwsim_driver = {
 475         .driver = {
 476                 .name = "mac80211_hwsim",
 477         },
 478 };
 479
 480 struct mac80211_hwsim_data {
 481         struct list_head list;
 482         struct rhash_head rht;
 483         struct ieee80211_hw *hw;
 484         struct device *dev;
 485         struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
 486         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 487         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 488         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 489         struct ieee80211_iface_combination if_combination;
 490         struct ieee80211_iface_limit if_limits[3];
 491         int n_if_limits;
 492
 493         u32 ciphers[ARRAY_SIZE(hwsim_ciphers)];
 494
 495         struct mac_address addresses[2];
 496         int channels, idx;
 497         bool use_chanctx;
 498         bool destroy_on_close;
 499         u32 portid;
 500         char alpha2[2];
 501         const struct ieee80211_regdomain *regd;
 502
 503         struct ieee80211_channel *tmp_chan;
 504         struct ieee80211_channel *roc_chan;
 505         u32 roc_duration;
 506         struct delayed_work roc_start;
 507         struct delayed_work roc_done;
 508         struct delayed_work hw_scan;
 509         struct cfg80211_scan_request *hw_scan_request;
 510         struct ieee80211_vif *hw_scan_vif;
 511         int scan_chan_idx;
 512         u8 scan_addr[ETH_ALEN];
 513         struct {
 514                 struct ieee80211_channel *channel;
 515                 unsigned long next_start, start, end;
 516         } survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
 517                       ARRAY_SIZE(hwsim_channels_5ghz)];
 518
 519         struct ieee80211_channel *channel;
 520         u64 beacon_int  /* beacon interval in us */;
 521         unsigned int rx_filter;
 522         bool started, idle, scanning;
 523         struct mutex mutex;
 524         struct tasklet_hrtimer beacon_timer;
 525         enum ps_mode {
 526                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 527         } ps;
 528         bool ps_poll_pending;
 529         struct dentry *debugfs;
 530
 531         uintptr_t pending_cookie;
 532         struct sk_buff_head pending;    /* packets pending */
 533         /*
 534          * Only radios in the same group can communicate together (the
 535          * channel has to match too). Each bit represents a group. A
 536          * radio can be in more than one group.
 537          */
 538         u64 group;
 539
 540         /* group shared by radios created in the same netns */
 541         int netgroup;
 542         /* wmediumd portid responsible for netgroup of this radio */
 543         u32 wmediumd;
 544
 545         /* difference between this hw's clock and the real clock, in usecs */
 546         s64 tsf_offset;
 547         s64 bcn_delta;
 548         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 549         u64 abs_bcn_ts;
 550
 551         /* Stats */
 552         u64 tx_pkts;
 553         u64 rx_pkts;
 554         u64 tx_bytes;
 555         u64 rx_bytes;
 556         u64 tx_dropped;
 557         u64 tx_failed;
 558 };
 559
 560 static const struct rhashtable_params hwsim_rht_params = {
 561         .nelem_hint = 2,
 562         .automatic_shrinking = true,
 563         .key_len = ETH_ALEN,
 564         .key_offset = offsetof(struct mac80211_hwsim_data, addresses[1]),
 565         .head_offset = offsetof(struct mac80211_hwsim_data, rht),
 566 };
 567
 568 struct hwsim_radiotap_hdr {
 569         struct ieee80211_radiotap_header hdr;
 570         __le64 rt_tsft;
 571         u8 rt_flags;
 572         u8 rt_rate;
 573         __le16 rt_channel;
 574         __le16 rt_chbitmask;
 575 } __packed;
 576
 577 struct hwsim_radiotap_ack_hdr {
 578         struct ieee80211_radiotap_header hdr;
 579         u8 rt_flags;
 580         u8 pad;
 581         __le16 rt_channel;
 582         __le16 rt_chbitmask;
 583 } __packed;
 584
 585 /* MAC80211_HWSIM netlink family */
 586 static struct genl_family hwsim_genl_family;
 587
 588 enum hwsim_multicast_groups {
 589         HWSIM_MCGRP_CONFIG,
 590 };
 591
 592 static const struct genl_multicast_group hwsim_mcgrps[] = {
 593         [HWSIM_MCGRP_CONFIG] = { .name = "config", },
 594 };
 595
 596 /* MAC80211_HWSIM netlink policy */
 597
 598 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 599         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 600         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 601         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 602                                .len = IEEE80211_MAX_DATA_LEN },
 603         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 604         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 605         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 606         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 607                                  .len = IEEE80211_TX_MAX_RATES *
 608                                         sizeof(struct hwsim_tx_rate)},
 609         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 610         [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
 611         [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
 612         [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 613         [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
 614         [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
 615         [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
 616         [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
 617         [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
 618         [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
 619         [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
 620         [HWSIM_ATTR_PERM_ADDR] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 621         [HWSIM_ATTR_IFTYPE_SUPPORT] = { .type = NLA_U32 },
 622         [HWSIM_ATTR_CIPHER_SUPPORT] = { .type = NLA_BINARY },
 623 };
 624
 625 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 626                                     struct sk_buff *skb,
 627                                     struct ieee80211_channel *chan);
 628
 629 /* sysfs attributes */
 630 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 631 {
 632         struct mac80211_hwsim_data *data = dat;
 633         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 634         struct sk_buff *skb;
 635         struct ieee80211_pspoll *pspoll;
 636
 637         if (!vp->assoc)
 638                 return;
 639
 640         wiphy_dbg(data->hw->wiphy,
 641                   "%s: send PS-Poll to %pM for aid %d\n",
 642                   __func__, vp->bssid, vp->aid);
 643
 644         skb = dev_alloc_skb(sizeof(*pspoll));
 645         if (!skb)
 646                 return;
 647         pspoll = skb_put(skb, sizeof(*pspoll));
 648         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 649                                             IEEE80211_STYPE_PSPOLL |
 650                                             IEEE80211_FCTL_PM);
 651         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 652         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 653         memcpy(pspoll->ta, mac, ETH_ALEN);
 654
 655         rcu_read_lock();
 656         mac80211_hwsim_tx_frame(data->hw, skb,
 657                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 658         rcu_read_unlock();
 659 }
 660
 661 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 662                                 struct ieee80211_vif *vif, int ps)
 663 {
 664         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 665         struct sk_buff *skb;
 666         struct ieee80211_hdr *hdr;
 667
 668         if (!vp->assoc)
 669                 return;
 670
 671         wiphy_dbg(data->hw->wiphy,
 672                   "%s: send data::nullfunc to %pM ps=%d\n",
 673                   __func__, vp->bssid, ps);
 674
 675         skb = dev_alloc_skb(sizeof(*hdr));
 676         if (!skb)
 677                 return;
 678         hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 679         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 680                                          IEEE80211_STYPE_NULLFUNC |
 681                                          IEEE80211_FCTL_TODS |
 682                                          (ps ? IEEE80211_FCTL_PM : 0));
 683         hdr->duration_id = cpu_to_le16(0);
 684         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 685         memcpy(hdr->addr2, mac, ETH_ALEN);
 686         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 687
 688         rcu_read_lock();
 689         mac80211_hwsim_tx_frame(data->hw, skb,
 690                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 691         rcu_read_unlock();
 692 }
 693
 694
 695 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 696                                    struct ieee80211_vif *vif)
 697 {
 698         struct mac80211_hwsim_data *data = dat;
 699         hwsim_send_nullfunc(data, mac, vif, 1);
 700 }
 701
 702 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 703                                       struct ieee80211_vif *vif)
 704 {
 705         struct mac80211_hwsim_data *data = dat;
 706         hwsim_send_nullfunc(data, mac, vif, 0);
 707 }
 708
 709 static int hwsim_fops_ps_read(void *dat, u64 *val)
 710 {
 711         struct mac80211_hwsim_data *data = dat;
 712         *val = data->ps;
 713         return 0;
 714 }
 715
 716 static int hwsim_fops_ps_write(void *dat, u64 val)
 717 {
 718         struct mac80211_hwsim_data *data = dat;
 719         enum ps_mode old_ps;
 720
 721         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 722             val != PS_MANUAL_POLL)
 723                 return -EINVAL;
 724
 725         if (val == PS_MANUAL_POLL) {
 726                 if (data->ps != PS_ENABLED)
 727                         return -EINVAL;
 728                 local_bh_disable();
 729                 ieee80211_iterate_active_interfaces_atomic(
 730                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 731                         hwsim_send_ps_poll, data);
 732                 local_bh_enable();
 733                 return 0;
 734         }
 735         old_ps = data->ps;
 736         data->ps = val;
 737
 738         local_bh_disable();
 739         if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 740                 ieee80211_iterate_active_interfaces_atomic(
 741                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 742                         hwsim_send_nullfunc_ps, data);
 743         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 744                 ieee80211_iterate_active_interfaces_atomic(
 745                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 746                         hwsim_send_nullfunc_no_ps, data);
 747         }
 748         local_bh_enable();
 749
 750         return 0;
 751 }
 752
 753 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 754                         "%llu\n");
 755
 756 static int hwsim_write_simulate_radar(void *dat, u64 val)
 757 {
 758         struct mac80211_hwsim_data *data = dat;
 759
 760         ieee80211_radar_detected(data->hw);
 761
 762         return 0;
 763 }
 764
 765 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
 766                         hwsim_write_simulate_radar, "%llu\n");
 767
 768 static int hwsim_fops_group_read(void *dat, u64 *val)
 769 {
 770         struct mac80211_hwsim_data *data = dat;
 771         *val = data->group;
 772         return 0;
 773 }
 774
 775 static int hwsim_fops_group_write(void *dat, u64 val)
 776 {
 777         struct mac80211_hwsim_data *data = dat;
 778         data->group = val;
 779         return 0;
 780 }
 781
 782 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
 783                         hwsim_fops_group_read, hwsim_fops_group_write,
 784                         "%llx\n");
 785
 786 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 787                                         struct net_device *dev)
 788 {
 789         /* TODO: allow packet injection */
 790         dev_kfree_skb(skb);
 791         return NETDEV_TX_OK;
 792 }
 793
 794 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 795 {
 796         return ktime_to_us(ktime_get_real());
 797 }
 798
 799 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 800 {
 801         u64 now = mac80211_hwsim_get_tsf_raw();
 802         return cpu_to_le64(now + data->tsf_offset);
 803 }
 804
 805 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 806                                   struct ieee80211_vif *vif)
 807 {
 808         struct mac80211_hwsim_data *data = hw->priv;
 809         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 810 }
 811
 812 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 813                 struct ieee80211_vif *vif, u64 tsf)
 814 {
 815         struct mac80211_hwsim_data *data = hw->priv;
 816         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 817         u32 bcn_int = data->beacon_int;
 818         u64 delta = abs(tsf - now);
 819
 820         /* adjust after beaconing with new timestamp at old TBTT */
 821         if (tsf > now) {
 822                 data->tsf_offset += delta;
 823                 data->bcn_delta = do_div(delta, bcn_int);
 824         } else {
 825                 data->tsf_offset -= delta;
 826                 data->bcn_delta = -(s64)do_div(delta, bcn_int);
 827         }
 828 }
 829
 830 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 831                                       struct sk_buff *tx_skb,
 832                                       struct ieee80211_channel *chan)
 833 {
 834         struct mac80211_hwsim_data *data = hw->priv;
 835         struct sk_buff *skb;
 836         struct hwsim_radiotap_hdr *hdr;
 837         u16 flags;
 838         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 839         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 840
 841         if (WARN_ON(!txrate))
 842                 return;
 843
 844         if (!netif_running(hwsim_mon))
 845                 return;
 846
 847         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 848         if (skb == NULL)
 849                 return;
 850
 851         hdr = skb_push(skb, sizeof(*hdr));
 852         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 853         hdr->hdr.it_pad = 0;
 854         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 855         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 856                                           (1 << IEEE80211_RADIOTAP_RATE) |
 857                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 858                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 859         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 860         hdr->rt_flags = 0;
 861         hdr->rt_rate = txrate->bitrate / 5;
 862         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 863         flags = IEEE80211_CHAN_2GHZ;
 864         if (txrate->flags & IEEE80211_RATE_ERP_G)
 865                 flags |= IEEE80211_CHAN_OFDM;
 866         else
 867                 flags |= IEEE80211_CHAN_CCK;
 868         hdr->rt_chbitmask = cpu_to_le16(flags);
 869
 870         skb->dev = hwsim_mon;
 871         skb_reset_mac_header(skb);
 872         skb->ip_summed = CHECKSUM_UNNECESSARY;
 873         skb->pkt_type = PACKET_OTHERHOST;
 874         skb->protocol = htons(ETH_P_802_2);
 875         memset(skb->cb, 0, sizeof(skb->cb));
 876         netif_rx(skb);
 877 }
 878
 879
 880 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 881                                        const u8 *addr)
 882 {
 883         struct sk_buff *skb;
 884         struct hwsim_radiotap_ack_hdr *hdr;
 885         u16 flags;
 886         struct ieee80211_hdr *hdr11;
 887
 888         if (!netif_running(hwsim_mon))
 889                 return;
 890
 891         skb = dev_alloc_skb(100);
 892         if (skb == NULL)
 893                 return;
 894
 895         hdr = skb_put(skb, sizeof(*hdr));
 896         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 897         hdr->hdr.it_pad = 0;
 898         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 899         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 900                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 901         hdr->rt_flags = 0;
 902         hdr->pad = 0;
 903         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 904         flags = IEEE80211_CHAN_2GHZ;
 905         hdr->rt_chbitmask = cpu_to_le16(flags);
 906
 907         hdr11 = skb_put(skb, 10);
 908         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 909                                            IEEE80211_STYPE_ACK);
 910         hdr11->duration_id = cpu_to_le16(0);
 911         memcpy(hdr11->addr1, addr, ETH_ALEN);
 912
 913         skb->dev = hwsim_mon;
 914         skb_reset_mac_header(skb);
 915         skb->ip_summed = CHECKSUM_UNNECESSARY;
 916         skb->pkt_type = PACKET_OTHERHOST;
 917         skb->protocol = htons(ETH_P_802_2);
 918         memset(skb->cb, 0, sizeof(skb->cb));
 919         netif_rx(skb);
 920 }
 921
 922 struct mac80211_hwsim_addr_match_data {
 923         u8 addr[ETH_ALEN];
 924         bool ret;
 925 };
 926
 927 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 928                                      struct ieee80211_vif *vif)
 929 {
 930         struct mac80211_hwsim_addr_match_data *md = data;
 931
 932         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 933                 md->ret = true;
 934 }
 935
 936 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 937                                       const u8 *addr)
 938 {
 939         struct mac80211_hwsim_addr_match_data md = {
 940                 .ret = false,
 941         };
 942
 943         if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
 944                 return true;
 945
 946         memcpy(md.addr, addr, ETH_ALEN);
 947
 948         ieee80211_iterate_active_interfaces_atomic(data->hw,
 949                                                    IEEE80211_IFACE_ITER_NORMAL,
 950                                                    mac80211_hwsim_addr_iter,
 951                                                    &md);
 952
 953         return md.ret;
 954 }
 955
 956 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 957                            struct sk_buff *skb)
 958 {
 959         switch (data->ps) {
 960         case PS_DISABLED:
 961                 return true;
 962         case PS_ENABLED:
 963                 return false;
 964         case PS_AUTO_POLL:
 965                 /* TODO: accept (some) Beacons by default and other frames only
 966                  * if pending PS-Poll has been sent */
 967                 return true;
 968         case PS_MANUAL_POLL:
 969                 /* Allow unicast frames to own address if there is a pending
 970                  * PS-Poll */
 971                 if (data->ps_poll_pending &&
 972                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
 973                         data->ps_poll_pending = false;
 974                         return true;
 975                 }
 976                 return false;
 977         }
 978
 979         return true;
 980 }
 981
 982 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
 983                                   struct sk_buff *skb, int portid)
 984 {
 985         struct net *net;
 986         bool found = false;
 987         int res = -ENOENT;
 988
 989         rcu_read_lock();
 990         for_each_net_rcu(net) {
 991                 if (data->netgroup == hwsim_net_get_netgroup(net)) {
 992                         res = genlmsg_unicast(net, skb, portid);
 993                         found = true;
 994                         break;
 995                 }
 996         }
 997         rcu_read_unlock();
 998
 999         if (!found)
1000                 nlmsg_free(skb);
1001
1002         return res;
1003 }
1004
1005 static inline u16 trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate *rate)
1006 {
1007         u16 result = 0;
1008
1009         if (rate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
1010                 result |= MAC80211_HWSIM_TX_RC_USE_RTS_CTS;
1011         if (rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1012                 result |= MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT;
1013         if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
1014                 result |= MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE;
1015         if (rate->flags & IEEE80211_TX_RC_MCS)
1016                 result |= MAC80211_HWSIM_TX_RC_MCS;
1017         if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
1018                 result |= MAC80211_HWSIM_TX_RC_GREEN_FIELD;
1019         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1020                 result |= MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH;
1021         if (rate->flags & IEEE80211_TX_RC_DUP_DATA)
1022                 result |= MAC80211_HWSIM_TX_RC_DUP_DATA;
1023         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
1024                 result |= MAC80211_HWSIM_TX_RC_SHORT_GI;
1025         if (rate->flags & IEEE80211_TX_RC_VHT_MCS)
1026                 result |= MAC80211_HWSIM_TX_RC_VHT_MCS;
1027         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1028                 result |= MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH;
1029         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1030                 result |= MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH;
1031
1032         return result;
1033 }
1034
1035 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1036                                        struct sk_buff *my_skb,
1037                                        int dst_portid)
1038 {
1039         struct sk_buff *skb;
1040         struct mac80211_hwsim_data *data = hw->priv;
1041         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1042         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1043         void *msg_head;
1044         unsigned int hwsim_flags = 0;
1045         int i;
1046         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1047         struct hwsim_tx_rate_flag tx_attempts_flags[IEEE80211_TX_MAX_RATES];
1048         uintptr_t cookie;
1049
1050         if (data->ps != PS_DISABLED)
1051                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1052         /* If the queue contains MAX_QUEUE skb's drop some */
1053         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1054                 /* Droping until WARN_QUEUE level */
1055                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1056                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1057                         data->tx_dropped++;
1058                 }
1059         }
1060
1061         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1062         if (skb == NULL)
1063                 goto nla_put_failure;
1064
1065         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1066                                HWSIM_CMD_FRAME);
1067         if (msg_head == NULL) {
1068                 pr_debug("mac80211_hwsim: problem with msg_head\n");
1069                 goto nla_put_failure;
1070         }
1071
1072         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1073                     ETH_ALEN, data->addresses[1].addr))
1074                 goto nla_put_failure;
1075
1076         /* We get the skb->data */
1077         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1078                 goto nla_put_failure;
1079
1080         /* We get the flags for this transmission, and we translate them to
1081            wmediumd flags  */
1082
1083         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1084                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1085
1086         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1087                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1088
1089         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1090                 goto nla_put_failure;
1091
1092         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1093                 goto nla_put_failure;
1094
1095         /* We get the tx control (rate and retries) info*/
1096
1097         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1098                 tx_attempts[i].idx = info->status.rates[i].idx;
1099                 tx_attempts_flags[i].idx = info->status.rates[i].idx;
1100                 tx_attempts[i].count = info->status.rates[i].count;
1101                 tx_attempts_flags[i].flags =
1102                                 trans_tx_rate_flags_ieee2hwsim(
1103                                                 &info->status.rates[i]);
1104         }
1105
1106         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1107                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1108                     tx_attempts))
1109                 goto nla_put_failure;
1110
1111         if (nla_put(skb, HWSIM_ATTR_TX_INFO_FLAGS,
1112                     sizeof(struct hwsim_tx_rate_flag) * IEEE80211_TX_MAX_RATES,
1113                     tx_attempts_flags))
1114                 goto nla_put_failure;
1115
1116         /* We create a cookie to identify this skb */
1117         data->pending_cookie++;
1118         cookie = data->pending_cookie;
1119         info->rate_driver_data[0] = (void *)cookie;
1120         if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1121                 goto nla_put_failure;
1122
1123         genlmsg_end(skb, msg_head);
1124         if (hwsim_unicast_netgroup(data, skb, dst_portid))
1125                 goto err_free_txskb;
1126
1127         /* Enqueue the packet */
1128         skb_queue_tail(&data->pending, my_skb);
1129         data->tx_pkts++;
1130         data->tx_bytes += my_skb->len;
1131         return;
1132
1133 nla_put_failure:
1134         nlmsg_free(skb);
1135 err_free_txskb:
1136         pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
1137         ieee80211_free_txskb(hw, my_skb);
1138         data->tx_failed++;
1139 }
1140
1141 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1142                                struct ieee80211_channel *c2)
1143 {
1144         if (!c1 || !c2)
1145                 return false;
1146
1147         return c1->center_freq == c2->center_freq;
1148 }
1149
1150 struct tx_iter_data {
1151         struct ieee80211_channel *channel;
1152         bool receive;
1153 };
1154
1155 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1156                                    struct ieee80211_vif *vif)
1157 {
1158         struct tx_iter_data *data = _data;
1159
1160         if (!vif->chanctx_conf)
1161                 return;
1162
1163         if (!hwsim_chans_compat(data->channel,
1164                                 rcu_dereference(vif->chanctx_conf)->def.chan))
1165                 return;
1166
1167         data->receive = true;
1168 }
1169
1170 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1171 {
1172         /*
1173          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1174          * e.g. like this:
1175          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1176          * (but you should use a valid OUI, not that)
1177          *
1178          * If anyone wants to 'donate' a radiotap OUI/subns code
1179          * please send a patch removing this #ifdef and changing
1180          * the values accordingly.
1181          */
1182 #ifdef HWSIM_RADIOTAP_OUI
1183         struct ieee80211_vendor_radiotap *rtap;
1184
1185         /*
1186          * Note that this code requires the headroom in the SKB
1187          * that was allocated earlier.
1188          */
1189         rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
1190         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1191         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1192         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1193         rtap->subns = 127;
1194
1195         /*
1196          * Radiotap vendor namespaces can (and should) also be
1197          * split into fields by using the standard radiotap
1198          * presence bitmap mechanism. Use just BIT(0) here for
1199          * the presence bitmap.
1200          */
1201         rtap->present = BIT(0);
1202         /* We have 8 bytes of (dummy) data */
1203         rtap->len = 8;
1204         /* For testing, also require it to be aligned */
1205         rtap->align = 8;
1206         /* And also test that padding works, 4 bytes */
1207         rtap->pad = 4;
1208         /* push the data */
1209         memcpy(rtap->data, "ABCDEFGH", 8);
1210         /* make sure to clear padding, mac80211 doesn't */
1211         memset(rtap->data + 8, 0, 4);
1212
1213         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1214 #endif
1215 }
1216
1217 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1218                                           struct sk_buff *skb,
1219                                           struct ieee80211_channel *chan)
1220 {
1221         struct mac80211_hwsim_data *data = hw->priv, *data2;
1222         bool ack = false;
1223         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1224         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1225         struct ieee80211_rx_status rx_status;
1226         u64 now;
1227
1228         memset(&rx_status, 0, sizeof(rx_status));
1229         rx_status.flag |= RX_FLAG_MACTIME_START;
1230         rx_status.freq = chan->center_freq;
1231         rx_status.band = chan->band;
1232         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1233                 rx_status.rate_idx =
1234                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1235                 rx_status.nss =
1236                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1237                 rx_status.encoding = RX_ENC_VHT;
1238         } else {
1239                 rx_status.rate_idx = info->control.rates[0].idx;
1240                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1241                         rx_status.encoding = RX_ENC_HT;
1242         }
1243         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1244                 rx_status.bw = RATE_INFO_BW_40;
1245         else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1246                 rx_status.bw = RATE_INFO_BW_80;
1247         else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1248                 rx_status.bw = RATE_INFO_BW_160;
1249         else
1250                 rx_status.bw = RATE_INFO_BW_20;
1251         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1252                 rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1253         /* TODO: simulate real signal strength (and optional packet loss) */
1254         rx_status.signal = -50;
1255         if (info->control.vif)
1256                 rx_status.signal += info->control.vif->bss_conf.txpower;
1257
1258         if (data->ps != PS_DISABLED)
1259                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1260
1261         /* release the skb's source info */
1262         skb_orphan(skb);
1263         skb_dst_drop(skb);
1264         skb->mark = 0;
1265         secpath_reset(skb);
1266         nf_reset(skb);
1267
1268         /*
1269          * Get absolute mactime here so all HWs RX at the "same time", and
1270          * absolute TX time for beacon mactime so the timestamp matches.
1271          * Giving beacons a different mactime than non-beacons looks messy, but
1272          * it helps the Toffset be exact and a ~10us mactime discrepancy
1273          * probably doesn't really matter.
1274          */
1275         if (ieee80211_is_beacon(hdr->frame_control) ||
1276             ieee80211_is_probe_resp(hdr->frame_control))
1277                 now = data->abs_bcn_ts;
1278         else
1279                 now = mac80211_hwsim_get_tsf_raw();
1280
1281         /* Copy skb to all enabled radios that are on the current frequency */
1282         spin_lock(&hwsim_radio_lock);
1283         list_for_each_entry(data2, &hwsim_radios, list) {
1284                 struct sk_buff *nskb;
1285                 struct tx_iter_data tx_iter_data = {
1286                         .receive = false,
1287                         .channel = chan,
1288                 };
1289
1290                 if (data == data2)
1291                         continue;
1292
1293                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1294                     !hwsim_ps_rx_ok(data2, skb))
1295                         continue;
1296
1297                 if (!(data->group & data2->group))
1298                         continue;
1299
1300                 if (data->netgroup != data2->netgroup)
1301                         continue;
1302
1303                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1304                     !hwsim_chans_compat(chan, data2->channel)) {
1305                         ieee80211_iterate_active_interfaces_atomic(
1306                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1307                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1308                         if (!tx_iter_data.receive)
1309                                 continue;
1310                 }
1311
1312                 /*
1313                  * reserve some space for our vendor and the normal
1314                  * radiotap header, since we're copying anyway
1315                  */
1316                 if (skb->len < PAGE_SIZE && paged_rx) {
1317                         struct page *page = alloc_page(GFP_ATOMIC);
1318
1319                         if (!page)
1320                                 continue;
1321
1322                         nskb = dev_alloc_skb(128);
1323                         if (!nskb) {
1324                                 __free_page(page);
1325                                 continue;
1326                         }
1327
1328                         memcpy(page_address(page), skb->data, skb->len);
1329                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1330                 } else {
1331                         nskb = skb_copy(skb, GFP_ATOMIC);
1332                         if (!nskb)
1333                                 continue;
1334                 }
1335
1336                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1337                         ack = true;
1338
1339                 rx_status.mactime = now + data2->tsf_offset;
1340
1341                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1342
1343                 mac80211_hwsim_add_vendor_rtap(nskb);
1344
1345                 data2->rx_pkts++;
1346                 data2->rx_bytes += nskb->len;
1347                 ieee80211_rx_irqsafe(data2->hw, nskb);
1348         }
1349         spin_unlock(&hwsim_radio_lock);
1350
1351         return ack;
1352 }
1353
1354 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1355                               struct ieee80211_tx_control *control,
1356                               struct sk_buff *skb)
1357 {
1358         struct mac80211_hwsim_data *data = hw->priv;
1359         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1360         struct ieee80211_hdr *hdr = (void *)skb->data;
1361         struct ieee80211_chanctx_conf *chanctx_conf;
1362         struct ieee80211_channel *channel;
1363         bool ack;
1364         u32 _portid;
1365
1366         if (WARN_ON(skb->len < 10)) {
1367                 /* Should not happen; just a sanity check for addr1 use */
1368                 ieee80211_free_txskb(hw, skb);
1369                 return;
1370         }
1371
1372         if (!data->use_chanctx) {
1373                 channel = data->channel;
1374         } else if (txi->hw_queue == 4) {
1375                 channel = data->tmp_chan;
1376         } else {
1377                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1378                 if (chanctx_conf)
1379                         channel = chanctx_conf->def.chan;
1380                 else
1381                         channel = NULL;
1382         }
1383
1384         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1385                 ieee80211_free_txskb(hw, skb);
1386                 return;
1387         }
1388
1389         if (data->idle && !data->tmp_chan) {
1390                 wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n");
1391                 ieee80211_free_txskb(hw, skb);
1392                 return;
1393         }
1394
1395         if (txi->control.vif)
1396                 hwsim_check_magic(txi->control.vif);
1397         if (control->sta)
1398                 hwsim_check_sta_magic(control->sta);
1399
1400         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1401                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1402                                        txi->control.rates,
1403                                        ARRAY_SIZE(txi->control.rates));
1404
1405         if (skb->len >= 24 + 8 &&
1406             ieee80211_is_probe_resp(hdr->frame_control)) {
1407                 /* fake header transmission time */
1408                 struct ieee80211_mgmt *mgmt;
1409                 struct ieee80211_rate *txrate;
1410                 u64 ts;
1411
1412                 mgmt = (struct ieee80211_mgmt *)skb->data;
1413                 txrate = ieee80211_get_tx_rate(hw, txi);
1414                 ts = mac80211_hwsim_get_tsf_raw();
1415                 mgmt->u.probe_resp.timestamp =
1416                         cpu_to_le64(ts + data->tsf_offset +
1417                                     24 * 8 * 10 / txrate->bitrate);
1418         }
1419
1420         mac80211_hwsim_monitor_rx(hw, skb, channel);
1421
1422         /* wmediumd mode check */
1423         _portid = READ_ONCE(data->wmediumd);
1424
1425         if (_portid)
1426                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1427
1428         /* NO wmediumd detected, perfect medium simulation */
1429         data->tx_pkts++;
1430         data->tx_bytes += skb->len;
1431         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1432
1433         if (ack && skb->len >= 16)
1434                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1435
1436         ieee80211_tx_info_clear_status(txi);
1437
1438         /* frame was transmitted at most favorable rate at first attempt */
1439         txi->control.rates[0].count = 1;
1440         txi->control.rates[1].idx = -1;
1441
1442         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1443                 txi->flags |= IEEE80211_TX_STAT_ACK;
1444         ieee80211_tx_status_irqsafe(hw, skb);
1445 }
1446
1447
1448 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1449 {
1450         struct mac80211_hwsim_data *data = hw->priv;
1451         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1452         data->started = true;
1453         return 0;
1454 }
1455
1456
1457 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1458 {
1459         struct mac80211_hwsim_data *data = hw->priv;
1460         data->started = false;
1461         tasklet_hrtimer_cancel(&data->beacon_timer);
1462         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1463 }
1464
1465
1466 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1467                                         struct ieee80211_vif *vif)
1468 {
1469         wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1470                   __func__, ieee80211_vif_type_p2p(vif),
1471                   vif->addr);
1472         hwsim_set_magic(vif);
1473
1474         vif->cab_queue = 0;
1475         vif->hw_queue[IEEE80211_AC_VO] = 0;
1476         vif->hw_queue[IEEE80211_AC_VI] = 1;
1477         vif->hw_queue[IEEE80211_AC_BE] = 2;
1478         vif->hw_queue[IEEE80211_AC_BK] = 3;
1479
1480         return 0;
1481 }
1482
1483
1484 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1485                                            struct ieee80211_vif *vif,
1486                                            enum nl80211_iftype newtype,
1487                                            bool newp2p)
1488 {
1489         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1490         wiphy_dbg(hw->wiphy,
1491                   "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1492                   __func__, ieee80211_vif_type_p2p(vif),
1493                     newtype, vif->addr);
1494         hwsim_check_magic(vif);
1495
1496         /*
1497          * interface may change from non-AP to AP in
1498          * which case this needs to be set up again
1499          */
1500         vif->cab_queue = 0;
1501
1502         return 0;
1503 }
1504
1505 static void mac80211_hwsim_remove_interface(
1506         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1507 {
1508         wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1509                   __func__, ieee80211_vif_type_p2p(vif),
1510                   vif->addr);
1511         hwsim_check_magic(vif);
1512         hwsim_clear_magic(vif);
1513 }
1514
1515 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1516                                     struct sk_buff *skb,
1517                                     struct ieee80211_channel *chan)
1518 {
1519         struct mac80211_hwsim_data *data = hw->priv;
1520         u32 _pid = READ_ONCE(data->wmediumd);
1521
1522         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1523                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1524                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1525                                        txi->control.rates,
1526                                        ARRAY_SIZE(txi->control.rates));
1527         }
1528
1529         mac80211_hwsim_monitor_rx(hw, skb, chan);
1530
1531         if (_pid)
1532                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1533
1534         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1535         dev_kfree_skb(skb);
1536 }
1537
1538 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1539                                      struct ieee80211_vif *vif)
1540 {
1541         struct mac80211_hwsim_data *data = arg;
1542         struct ieee80211_hw *hw = data->hw;
1543         struct ieee80211_tx_info *info;
1544         struct ieee80211_rate *txrate;
1545         struct ieee80211_mgmt *mgmt;
1546         struct sk_buff *skb;
1547
1548         hwsim_check_magic(vif);
1549
1550         if (vif->type != NL80211_IFTYPE_AP &&
1551             vif->type != NL80211_IFTYPE_MESH_POINT &&
1552             vif->type != NL80211_IFTYPE_ADHOC)
1553                 return;
1554
1555         skb = ieee80211_beacon_get(hw, vif);
1556         if (skb == NULL)
1557                 return;
1558         info = IEEE80211_SKB_CB(skb);
1559         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1560                 ieee80211_get_tx_rates(vif, NULL, skb,
1561                                        info->control.rates,
1562                                        ARRAY_SIZE(info->control.rates));
1563
1564         txrate = ieee80211_get_tx_rate(hw, info);
1565
1566         mgmt = (struct ieee80211_mgmt *) skb->data;
1567         /* fake header transmission time */
1568         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1569         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1570                                                data->tsf_offset +
1571                                                24 * 8 * 10 / txrate->bitrate);
1572
1573         mac80211_hwsim_tx_frame(hw, skb,
1574                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1575
1576         if (vif->csa_active && ieee80211_csa_is_complete(vif))
1577                 ieee80211_csa_finish(vif);
1578 }
1579
1580 static enum hrtimer_restart
1581 mac80211_hwsim_beacon(struct hrtimer *timer)
1582 {
1583         struct mac80211_hwsim_data *data =
1584                 container_of(timer, struct mac80211_hwsim_data,
1585                              beacon_timer.timer);
1586         struct ieee80211_hw *hw = data->hw;
1587         u64 bcn_int = data->beacon_int;
1588         ktime_t next_bcn;
1589
1590         if (!data->started)
1591                 goto out;
1592
1593         ieee80211_iterate_active_interfaces_atomic(
1594                 hw, IEEE80211_IFACE_ITER_NORMAL,
1595                 mac80211_hwsim_beacon_tx, data);
1596
1597         /* beacon at new TBTT + beacon interval */
1598         if (data->bcn_delta) {
1599                 bcn_int -= data->bcn_delta;
1600                 data->bcn_delta = 0;
1601         }
1602
1603         next_bcn = ktime_add(hrtimer_get_expires(timer),
1604                              ns_to_ktime(bcn_int * 1000));
1605         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1606 out:
1607         return HRTIMER_NORESTART;
1608 }
1609
1610 static const char * const hwsim_chanwidths[] = {
1611         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1612         [NL80211_CHAN_WIDTH_20] = "ht20",
1613         [NL80211_CHAN_WIDTH_40] = "ht40",
1614         [NL80211_CHAN_WIDTH_80] = "vht80",
1615         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1616         [NL80211_CHAN_WIDTH_160] = "vht160",
1617 };
1618
1619 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1620 {
1621         struct mac80211_hwsim_data *data = hw->priv;
1622         struct ieee80211_conf *conf = &hw->conf;
1623         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1624                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1625                 [IEEE80211_SMPS_OFF] = "off",
1626                 [IEEE80211_SMPS_STATIC] = "static",
1627                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1628         };
1629         int idx;
1630
1631         if (conf->chandef.chan)
1632                 wiphy_dbg(hw->wiphy,
1633                           "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1634                           __func__,
1635                           conf->chandef.chan->center_freq,
1636                           conf->chandef.center_freq1,
1637                           conf->chandef.center_freq2,
1638                           hwsim_chanwidths[conf->chandef.width],
1639                           !!(conf->flags & IEEE80211_CONF_IDLE),
1640                           !!(conf->flags & IEEE80211_CONF_PS),
1641                           smps_modes[conf->smps_mode]);
1642         else
1643                 wiphy_dbg(hw->wiphy,
1644                           "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1645                           __func__,
1646                           !!(conf->flags & IEEE80211_CONF_IDLE),
1647                           !!(conf->flags & IEEE80211_CONF_PS),
1648                           smps_modes[conf->smps_mode]);
1649
1650         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1651
1652         WARN_ON(conf->chandef.chan && data->use_chanctx);
1653
1654         mutex_lock(&data->mutex);
1655         if (data->scanning && conf->chandef.chan) {
1656                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1657                         if (data->survey_data[idx].channel == data->channel) {
1658                                 data->survey_data[idx].start =
1659                                         data->survey_data[idx].next_start;
1660                                 data->survey_data[idx].end = jiffies;
1661                                 break;
1662                         }
1663                 }
1664
1665                 data->channel = conf->chandef.chan;
1666
1667                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1668                         if (data->survey_data[idx].channel &&
1669                             data->survey_data[idx].channel != data->channel)
1670                                 continue;
1671                         data->survey_data[idx].channel = data->channel;
1672                         data->survey_data[idx].next_start = jiffies;
1673                         break;
1674                 }
1675         } else {
1676                 data->channel = conf->chandef.chan;
1677         }
1678         mutex_unlock(&data->mutex);
1679
1680         if (!data->started || !data->beacon_int)
1681                 tasklet_hrtimer_cancel(&data->beacon_timer);
1682         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1683                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1684                 u32 bcn_int = data->beacon_int;
1685                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1686
1687                 tasklet_hrtimer_start(&data->beacon_timer,
1688                                       ns_to_ktime(until_tbtt * 1000),
1689                                       HRTIMER_MODE_REL);
1690         }
1691
1692         return 0;
1693 }
1694
1695
1696 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1697                                             unsigned int changed_flags,
1698                                             unsigned int *total_flags,u64 multicast)
1699 {
1700         struct mac80211_hwsim_data *data = hw->priv;
1701
1702         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1703
1704         data->rx_filter = 0;
1705         if (*total_flags & FIF_ALLMULTI)
1706                 data->rx_filter |= FIF_ALLMULTI;
1707
1708         *total_flags = data->rx_filter;
1709 }
1710
1711 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1712                                        struct ieee80211_vif *vif)
1713 {
1714         unsigned int *count = data;
1715         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1716
1717         if (vp->bcn_en)
1718                 (*count)++;
1719 }
1720
1721 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1722                                             struct ieee80211_vif *vif,
1723                                             struct ieee80211_bss_conf *info,
1724                                             u32 changed)
1725 {
1726         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1727         struct mac80211_hwsim_data *data = hw->priv;
1728
1729         hwsim_check_magic(vif);
1730
1731         wiphy_dbg(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1732                   __func__, changed, vif->addr);
1733
1734         if (changed & BSS_CHANGED_BSSID) {
1735                 wiphy_dbg(hw->wiphy, "%s: BSSID changed: %pM\n",
1736                           __func__, info->bssid);
1737                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1738         }
1739
1740         if (changed & BSS_CHANGED_ASSOC) {
1741                 wiphy_dbg(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1742                           info->assoc, info->aid);
1743                 vp->assoc = info->assoc;
1744                 vp->aid = info->aid;
1745         }
1746
1747         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1748                 wiphy_dbg(hw->wiphy, "  BCN EN: %d (BI=%u)\n",
1749                           info->enable_beacon, info->beacon_int);
1750                 vp->bcn_en = info->enable_beacon;
1751                 if (data->started &&
1752                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1753                     info->enable_beacon) {
1754                         u64 tsf, until_tbtt;
1755                         u32 bcn_int;
1756                         data->beacon_int = info->beacon_int * 1024;
1757                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1758                         bcn_int = data->beacon_int;
1759                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1760                         tasklet_hrtimer_start(&data->beacon_timer,
1761                                               ns_to_ktime(until_tbtt * 1000),
1762                                               HRTIMER_MODE_REL);
1763                 } else if (!info->enable_beacon) {
1764                         unsigned int count = 0;
1765                         ieee80211_iterate_active_interfaces_atomic(
1766                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1767                                 mac80211_hwsim_bcn_en_iter, &count);
1768                         wiphy_dbg(hw->wiphy, "  beaconing vifs remaining: %u",
1769                                   count);
1770                         if (count == 0) {
1771                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1772                                 data->beacon_int = 0;
1773                         }
1774                 }
1775         }
1776
1777         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1778                 wiphy_dbg(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1779                           info->use_cts_prot);
1780         }
1781
1782         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1783                 wiphy_dbg(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1784                           info->use_short_preamble);
1785         }
1786
1787         if (changed & BSS_CHANGED_ERP_SLOT) {
1788                 wiphy_dbg(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1789         }
1790
1791         if (changed & BSS_CHANGED_HT) {
1792                 wiphy_dbg(hw->wiphy, "  HT: op_mode=0x%x\n",
1793                           info->ht_operation_mode);
1794         }
1795
1796         if (changed & BSS_CHANGED_BASIC_RATES) {
1797                 wiphy_dbg(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1798                           (unsigned long long) info->basic_rates);
1799         }
1800
1801         if (changed & BSS_CHANGED_TXPOWER)
1802                 wiphy_dbg(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1803 }
1804
1805 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1806                                   struct ieee80211_vif *vif,
1807                                   struct ieee80211_sta *sta)
1808 {
1809         hwsim_check_magic(vif);
1810         hwsim_set_sta_magic(sta);
1811
1812         return 0;
1813 }
1814
1815 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1816                                      struct ieee80211_vif *vif,
1817                                      struct ieee80211_sta *sta)
1818 {
1819         hwsim_check_magic(vif);
1820         hwsim_clear_sta_magic(sta);
1821
1822         return 0;
1823 }
1824
1825 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1826                                       struct ieee80211_vif *vif,
1827                                       enum sta_notify_cmd cmd,
1828                                       struct ieee80211_sta *sta)
1829 {
1830         hwsim_check_magic(vif);
1831
1832         switch (cmd) {
1833         case STA_NOTIFY_SLEEP:
1834         case STA_NOTIFY_AWAKE:
1835                 /* TODO: make good use of these flags */
1836                 break;
1837         default:
1838                 WARN(1, "Invalid sta notify: %d\n", cmd);
1839                 break;
1840         }
1841 }
1842
1843 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1844                                   struct ieee80211_sta *sta,
1845                                   bool set)
1846 {
1847         hwsim_check_sta_magic(sta);
1848         return 0;
1849 }
1850
1851 static int mac80211_hwsim_conf_tx(
1852         struct ieee80211_hw *hw,
1853         struct ieee80211_vif *vif, u16 queue,
1854         const struct ieee80211_tx_queue_params *params)
1855 {
1856         wiphy_dbg(hw->wiphy,
1857                   "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1858                   __func__, queue,
1859                   params->txop, params->cw_min,
1860                   params->cw_max, params->aifs);
1861         return 0;
1862 }
1863
1864 static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
1865                                      struct survey_info *survey)
1866 {
1867         struct mac80211_hwsim_data *hwsim = hw->priv;
1868
1869         if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
1870                 return -ENOENT;
1871
1872         mutex_lock(&hwsim->mutex);
1873         survey->channel = hwsim->survey_data[idx].channel;
1874         if (!survey->channel) {
1875                 mutex_unlock(&hwsim->mutex);
1876                 return -ENOENT;
1877         }
1878
1879         /*
1880          * Magically conjured dummy values --- this is only ok for simulated hardware.
1881          *
1882          * A real driver which cannot determine real values noise MUST NOT
1883          * report any, especially not a magically conjured ones :-)
1884          */
1885         survey->filled = SURVEY_INFO_NOISE_DBM |
1886                          SURVEY_INFO_TIME |
1887                          SURVEY_INFO_TIME_BUSY;
1888         survey->noise = -92;
1889         survey->time =
1890                 jiffies_to_msecs(hwsim->survey_data[idx].end -
1891                                  hwsim->survey_data[idx].start);
1892         /* report 12.5% of channel time is used */
1893         survey->time_busy = survey->time/8;
1894         mutex_unlock(&hwsim->mutex);
1895
1896         return 0;
1897 }
1898
1899 #ifdef CONFIG_NL80211_TESTMODE
1900 /*
1901  * This section contains example code for using netlink
1902  * attributes with the testmode command in nl80211.
1903  */
1904
1905 /* These enums need to be kept in sync with userspace */
1906 enum hwsim_testmode_attr {
1907         __HWSIM_TM_ATTR_INVALID = 0,
1908         HWSIM_TM_ATTR_CMD       = 1,
1909         HWSIM_TM_ATTR_PS        = 2,
1910
1911         /* keep last */
1912         __HWSIM_TM_ATTR_AFTER_LAST,
1913         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1914 };
1915
1916 enum hwsim_testmode_cmd {
1917         HWSIM_TM_CMD_SET_PS             = 0,
1918         HWSIM_TM_CMD_GET_PS             = 1,
1919         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1920         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1921 };
1922
1923 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1924         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1925         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1926 };
1927
1928 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1929                                        struct ieee80211_vif *vif,
1930                                        void *data, int len)
1931 {
1932         struct mac80211_hwsim_data *hwsim = hw->priv;
1933         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1934         struct sk_buff *skb;
1935         int err, ps;
1936
1937         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1938                         hwsim_testmode_policy, NULL);
1939         if (err)
1940                 return err;
1941
1942         if (!tb[HWSIM_TM_ATTR_CMD])
1943                 return -EINVAL;
1944
1945         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1946         case HWSIM_TM_CMD_SET_PS:
1947                 if (!tb[HWSIM_TM_ATTR_PS])
1948                         return -EINVAL;
1949                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1950                 return hwsim_fops_ps_write(hwsim, ps);
1951         case HWSIM_TM_CMD_GET_PS:
1952                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1953                                                 nla_total_size(sizeof(u32)));
1954                 if (!skb)
1955                         return -ENOMEM;
1956                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1957                         goto nla_put_failure;
1958                 return cfg80211_testmode_reply(skb);
1959         case HWSIM_TM_CMD_STOP_QUEUES:
1960                 ieee80211_stop_queues(hw);
1961                 return 0;
1962         case HWSIM_TM_CMD_WAKE_QUEUES:
1963                 ieee80211_wake_queues(hw);
1964                 return 0;
1965         default:
1966                 return -EOPNOTSUPP;
1967         }
1968
1969  nla_put_failure:
1970         kfree_skb(skb);
1971         return -ENOBUFS;
1972 }
1973 #endif
1974
1975 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1976                                        struct ieee80211_vif *vif,
1977                                        struct ieee80211_ampdu_params *params)
1978 {
1979         struct ieee80211_sta *sta = params->sta;
1980         enum ieee80211_ampdu_mlme_action action = params->action;
1981         u16 tid = params->tid;
1982
1983         switch (action) {
1984         case IEEE80211_AMPDU_TX_START:
1985                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1986                 break;
1987         case IEEE80211_AMPDU_TX_STOP_CONT:
1988         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1989         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1990                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1991                 break;
1992         case IEEE80211_AMPDU_TX_OPERATIONAL:
1993                 break;
1994         case IEEE80211_AMPDU_RX_START:
1995         case IEEE80211_AMPDU_RX_STOP:
1996                 break;
1997         default:
1998                 return -EOPNOTSUPP;
1999         }
2000
2001         return 0;
2002 }
2003
2004 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
2005                                  struct ieee80211_vif *vif,
2006                                  u32 queues, bool drop)
2007 {
2008         /* Not implemented, queues only on kernel side */
2009 }
2010
2011 static void hw_scan_work(struct work_struct *work)
2012 {
2013         struct mac80211_hwsim_data *hwsim =
2014                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
2015         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
2016         int dwell, i;
2017
2018         mutex_lock(&hwsim->mutex);
2019         if (hwsim->scan_chan_idx >= req->n_channels) {
2020                 struct cfg80211_scan_info info = {
2021                         .aborted = false,
2022                 };
2023
2024                 wiphy_dbg(hwsim->hw->wiphy, "hw scan complete\n");
2025                 ieee80211_scan_completed(hwsim->hw, &info);
2026                 hwsim->hw_scan_request = NULL;
2027                 hwsim->hw_scan_vif = NULL;
2028                 hwsim->tmp_chan = NULL;
2029                 mutex_unlock(&hwsim->mutex);
2030                 return;
2031         }
2032
2033         wiphy_dbg(hwsim->hw->wiphy, "hw scan %d MHz\n",
2034                   req->channels[hwsim->scan_chan_idx]->center_freq);
2035
2036         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
2037         if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
2038                                       IEEE80211_CHAN_RADAR) ||
2039             !req->n_ssids) {
2040                 dwell = 120;
2041         } else {
2042                 dwell = 30;
2043                 /* send probes */
2044                 for (i = 0; i < req->n_ssids; i++) {
2045                         struct sk_buff *probe;
2046                         struct ieee80211_mgmt *mgmt;
2047
2048                         probe = ieee80211_probereq_get(hwsim->hw,
2049                                                        hwsim->scan_addr,
2050                                                        req->ssids[i].ssid,
2051                                                        req->ssids[i].ssid_len,
2052                                                        req->ie_len);
2053                         if (!probe)
2054                                 continue;
2055
2056                         mgmt = (struct ieee80211_mgmt *) probe->data;
2057                         memcpy(mgmt->da, req->bssid, ETH_ALEN);
2058                         memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2059
2060                         if (req->ie_len)
2061                                 skb_put_data(probe, req->ie, req->ie_len);
2062
2063                         local_bh_disable();
2064                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
2065                                                 hwsim->tmp_chan);
2066                         local_bh_enable();
2067                 }
2068         }
2069         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2070                                      msecs_to_jiffies(dwell));
2071         hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2072         hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2073         hwsim->survey_data[hwsim->scan_chan_idx].end =
2074                 jiffies + msecs_to_jiffies(dwell);
2075         hwsim->scan_chan_idx++;
2076         mutex_unlock(&hwsim->mutex);
2077 }
2078
2079 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2080                                   struct ieee80211_vif *vif,
2081                                   struct ieee80211_scan_request *hw_req)
2082 {
2083         struct mac80211_hwsim_data *hwsim = hw->priv;
2084         struct cfg80211_scan_request *req = &hw_req->req;
2085
2086         mutex_lock(&hwsim->mutex);
2087         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2088                 mutex_unlock(&hwsim->mutex);
2089                 return -EBUSY;
2090         }
2091         hwsim->hw_scan_request = req;
2092         hwsim->hw_scan_vif = vif;
2093         hwsim->scan_chan_idx = 0;
2094         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2095                 get_random_mask_addr(hwsim->scan_addr,
2096                                      hw_req->req.mac_addr,
2097                                      hw_req->req.mac_addr_mask);
2098         else
2099                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2100         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2101         mutex_unlock(&hwsim->mutex);
2102
2103         wiphy_dbg(hw->wiphy, "hwsim hw_scan request\n");
2104
2105         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2106
2107         return 0;
2108 }
2109
2110 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2111                                           struct ieee80211_vif *vif)
2112 {
2113         struct mac80211_hwsim_data *hwsim = hw->priv;
2114         struct cfg80211_scan_info info = {
2115                 .aborted = true,
2116         };
2117
2118         wiphy_dbg(hw->wiphy, "hwsim cancel_hw_scan\n");
2119
2120         cancel_delayed_work_sync(&hwsim->hw_scan);
2121
2122         mutex_lock(&hwsim->mutex);
2123         ieee80211_scan_completed(hwsim->hw, &info);
2124         hwsim->tmp_chan = NULL;
2125         hwsim->hw_scan_request = NULL;
2126         hwsim->hw_scan_vif = NULL;
2127         mutex_unlock(&hwsim->mutex);
2128 }
2129
2130 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2131                                    struct ieee80211_vif *vif,
2132                                    const u8 *mac_addr)
2133 {
2134         struct mac80211_hwsim_data *hwsim = hw->priv;
2135
2136         mutex_lock(&hwsim->mutex);
2137
2138         if (hwsim->scanning) {
2139                 pr_debug("two hwsim sw_scans detected!\n");
2140                 goto out;
2141         }
2142
2143         pr_debug("hwsim sw_scan request, prepping stuff\n");
2144
2145         memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2146         hwsim->scanning = true;
2147         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2148
2149 out:
2150         mutex_unlock(&hwsim->mutex);
2151 }
2152
2153 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2154                                             struct ieee80211_vif *vif)
2155 {
2156         struct mac80211_hwsim_data *hwsim = hw->priv;
2157
2158         mutex_lock(&hwsim->mutex);
2159
2160         pr_debug("hwsim sw_scan_complete\n");
2161         hwsim->scanning = false;
2162         eth_zero_addr(hwsim->scan_addr);
2163
2164         mutex_unlock(&hwsim->mutex);
2165 }
2166
2167 static void hw_roc_start(struct work_struct *work)
2168 {
2169         struct mac80211_hwsim_data *hwsim =
2170                 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2171
2172         mutex_lock(&hwsim->mutex);
2173
2174         wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC begins\n");
2175         hwsim->tmp_chan = hwsim->roc_chan;
2176         ieee80211_ready_on_channel(hwsim->hw);
2177
2178         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2179                                      msecs_to_jiffies(hwsim->roc_duration));
2180
2181         mutex_unlock(&hwsim->mutex);
2182 }
2183
2184 static void hw_roc_done(struct work_struct *work)
2185 {
2186         struct mac80211_hwsim_data *hwsim =
2187                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2188
2189         mutex_lock(&hwsim->mutex);
2190         ieee80211_remain_on_channel_expired(hwsim->hw);
2191         hwsim->tmp_chan = NULL;
2192         mutex_unlock(&hwsim->mutex);
2193
2194         wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC expired\n");
2195 }
2196
2197 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2198                               struct ieee80211_vif *vif,
2199                               struct ieee80211_channel *chan,
2200                               int duration,
2201                               enum ieee80211_roc_type type)
2202 {
2203         struct mac80211_hwsim_data *hwsim = hw->priv;
2204
2205         mutex_lock(&hwsim->mutex);
2206         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2207                 mutex_unlock(&hwsim->mutex);
2208                 return -EBUSY;
2209         }
2210
2211         hwsim->roc_chan = chan;
2212         hwsim->roc_duration = duration;
2213         mutex_unlock(&hwsim->mutex);
2214
2215         wiphy_dbg(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2216                   chan->center_freq, duration);
2217         ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2218
2219         return 0;
2220 }
2221
2222 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2223 {
2224         struct mac80211_hwsim_data *hwsim = hw->priv;
2225
2226         cancel_delayed_work_sync(&hwsim->roc_start);
2227         cancel_delayed_work_sync(&hwsim->roc_done);
2228
2229         mutex_lock(&hwsim->mutex);
2230         hwsim->tmp_chan = NULL;
2231         mutex_unlock(&hwsim->mutex);
2232
2233         wiphy_dbg(hw->wiphy, "hwsim ROC canceled\n");
2234
2235         return 0;
2236 }
2237
2238 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2239                                       struct ieee80211_chanctx_conf *ctx)
2240 {
2241         hwsim_set_chanctx_magic(ctx);
2242         wiphy_dbg(hw->wiphy,
2243                   "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2244                   ctx->def.chan->center_freq, ctx->def.width,
2245                   ctx->def.center_freq1, ctx->def.center_freq2);
2246         return 0;
2247 }
2248
2249 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2250                                           struct ieee80211_chanctx_conf *ctx)
2251 {
2252         wiphy_dbg(hw->wiphy,
2253                   "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2254                   ctx->def.chan->center_freq, ctx->def.width,
2255                   ctx->def.center_freq1, ctx->def.center_freq2);
2256         hwsim_check_chanctx_magic(ctx);
2257         hwsim_clear_chanctx_magic(ctx);
2258 }
2259
2260 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2261                                           struct ieee80211_chanctx_conf *ctx,
2262                                           u32 changed)
2263 {
2264         hwsim_check_chanctx_magic(ctx);
2265         wiphy_dbg(hw->wiphy,
2266                   "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2267                   ctx->def.chan->center_freq, ctx->def.width,
2268                   ctx->def.center_freq1, ctx->def.center_freq2);
2269 }
2270
2271 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2272                                              struct ieee80211_vif *vif,
2273                                              struct ieee80211_chanctx_conf *ctx)
2274 {
2275         hwsim_check_magic(vif);
2276         hwsim_check_chanctx_magic(ctx);
2277
2278         return 0;
2279 }
2280
2281 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2282                                                 struct ieee80211_vif *vif,
2283                                                 struct ieee80211_chanctx_conf *ctx)
2284 {
2285         hwsim_check_magic(vif);
2286         hwsim_check_chanctx_magic(ctx);
2287 }
2288
2289 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2290         "tx_pkts_nic",
2291         "tx_bytes_nic",
2292         "rx_pkts_nic",
2293         "rx_bytes_nic",
2294         "d_tx_dropped",
2295         "d_tx_failed",
2296         "d_ps_mode",
2297         "d_group",
2298 };
2299
2300 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2301
2302 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2303                                           struct ieee80211_vif *vif,
2304                                           u32 sset, u8 *data)
2305 {
2306         if (sset == ETH_SS_STATS)
2307                 memcpy(data, *mac80211_hwsim_gstrings_stats,
2308                        sizeof(mac80211_hwsim_gstrings_stats));
2309 }
2310
2311 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2312                                             struct ieee80211_vif *vif, int sset)
2313 {
2314         if (sset == ETH_SS_STATS)
2315                 return MAC80211_HWSIM_SSTATS_LEN;
2316         return 0;
2317 }
2318
2319 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2320                                         struct ieee80211_vif *vif,
2321                                         struct ethtool_stats *stats, u64 *data)
2322 {
2323         struct mac80211_hwsim_data *ar = hw->priv;
2324         int i = 0;
2325
2326         data[i++] = ar->tx_pkts;
2327         data[i++] = ar->tx_bytes;
2328         data[i++] = ar->rx_pkts;
2329         data[i++] = ar->rx_bytes;
2330         data[i++] = ar->tx_dropped;
2331         data[i++] = ar->tx_failed;
2332         data[i++] = ar->ps;
2333         data[i++] = ar->group;
2334
2335         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2336 }
2337
2338 #define HWSIM_COMMON_OPS                                        \
2339         .tx = mac80211_hwsim_tx,                                \
2340         .start = mac80211_hwsim_start,                          \
2341         .stop = mac80211_hwsim_stop,                            \
2342         .add_interface = mac80211_hwsim_add_interface,          \
2343         .change_interface = mac80211_hwsim_change_interface,    \
2344         .remove_interface = mac80211_hwsim_remove_interface,    \
2345         .config = mac80211_hwsim_config,                        \
2346         .configure_filter = mac80211_hwsim_configure_filter,    \
2347         .bss_info_changed = mac80211_hwsim_bss_info_changed,    \
2348         .sta_add = mac80211_hwsim_sta_add,                      \
2349         .sta_remove = mac80211_hwsim_sta_remove,                \
2350         .sta_notify = mac80211_hwsim_sta_notify,                \
2351         .set_tim = mac80211_hwsim_set_tim,                      \
2352         .conf_tx = mac80211_hwsim_conf_tx,                      \
2353         .get_survey = mac80211_hwsim_get_survey,                \
2354         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)      \
2355         .ampdu_action = mac80211_hwsim_ampdu_action,            \
2356         .flush = mac80211_hwsim_flush,                          \
2357         .get_tsf = mac80211_hwsim_get_tsf,                      \
2358         .set_tsf = mac80211_hwsim_set_tsf,                      \
2359         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,  \
2360         .get_et_stats = mac80211_hwsim_get_et_stats,            \
2361         .get_et_strings = mac80211_hwsim_get_et_strings,
2362
2363 static const struct ieee80211_ops mac80211_hwsim_ops = {
2364         HWSIM_COMMON_OPS
2365         .sw_scan_start = mac80211_hwsim_sw_scan,
2366         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2367 };
2368
2369 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2370         HWSIM_COMMON_OPS
2371         .hw_scan = mac80211_hwsim_hw_scan,
2372         .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2373         .sw_scan_start = NULL,
2374         .sw_scan_complete = NULL,
2375         .remain_on_channel = mac80211_hwsim_roc,
2376         .cancel_remain_on_channel = mac80211_hwsim_croc,
2377         .add_chanctx = mac80211_hwsim_add_chanctx,
2378         .remove_chanctx = mac80211_hwsim_remove_chanctx,
2379         .change_chanctx = mac80211_hwsim_change_chanctx,
2380         .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2381         .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2382 };
2383
2384 struct hwsim_new_radio_params {
2385         unsigned int channels;
2386         const char *reg_alpha2;
2387         const struct ieee80211_regdomain *regd;
2388         bool reg_strict;
2389         bool p2p_device;
2390         bool use_chanctx;
2391         bool destroy_on_close;
2392         const char *hwname;
2393         bool no_vif;
2394         const u8 *perm_addr;
2395         u32 iftypes;
2396         u32 *ciphers;
2397         u8 n_ciphers;
2398 };
2399
2400 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2401                                    struct genl_info *info)
2402 {
2403         if (info)
2404                 genl_notify(&hwsim_genl_family, mcast_skb, info,
2405                             HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2406         else
2407                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2408                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2409 }
2410
2411 static int append_radio_msg(struct sk_buff *skb, int id,
2412                             struct hwsim_new_radio_params *param)
2413 {
2414         int ret;
2415
2416         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2417         if (ret < 0)
2418                 return ret;
2419
2420         if (param->channels) {
2421                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2422                 if (ret < 0)
2423                         return ret;
2424         }
2425
2426         if (param->reg_alpha2) {
2427                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2428                               param->reg_alpha2);
2429                 if (ret < 0)
2430                         return ret;
2431         }
2432
2433         if (param->regd) {
2434                 int i;
2435
2436                 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2437                         if (hwsim_world_regdom_custom[i] != param->regd)
2438                                 continue;
2439
2440                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2441                         if (ret < 0)
2442                                 return ret;
2443                         break;
2444                 }
2445         }
2446
2447         if (param->reg_strict) {
2448                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2449                 if (ret < 0)
2450                         return ret;
2451         }
2452
2453         if (param->p2p_device) {
2454                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2455                 if (ret < 0)
2456                         return ret;
2457         }
2458
2459         if (param->use_chanctx) {
2460                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2461                 if (ret < 0)
2462                         return ret;
2463         }
2464
2465         if (param->hwname) {
2466                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2467                               strlen(param->hwname), param->hwname);
2468                 if (ret < 0)
2469                         return ret;
2470         }
2471
2472         return 0;
2473 }
2474
2475 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2476                                   struct hwsim_new_radio_params *param)
2477 {
2478         struct sk_buff *mcast_skb;
2479         void *data;
2480
2481         mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2482         if (!mcast_skb)
2483                 return;
2484
2485         data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2486                            HWSIM_CMD_NEW_RADIO);
2487         if (!data)
2488                 goto out_err;
2489
2490         if (append_radio_msg(mcast_skb, id, param) < 0)
2491                 goto out_err;
2492
2493         genlmsg_end(mcast_skb, data);
2494
2495         hwsim_mcast_config_msg(mcast_skb, info);
2496         return;
2497
2498 out_err:
2499         nlmsg_free(mcast_skb);
2500 }
2501
2502 static const struct ieee80211_sband_iftype_data he_capa_2ghz = {
2503         /* TODO: should we support other types, e.g., P2P?*/
2504         .types_mask = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP),
2505         .he_cap = {
2506                 .has_he = true,
2507                 .he_cap_elem = {
2508                         .mac_cap_info[0] =
2509                                 IEEE80211_HE_MAC_CAP0_HTC_HE,
2510                         .mac_cap_info[1] =
2511                                 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2512                                 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2513                         .mac_cap_info[2] =
2514                                 IEEE80211_HE_MAC_CAP2_BSR |
2515                                 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2516                                 IEEE80211_HE_MAC_CAP2_ACK_EN,
2517                         .mac_cap_info[3] =
2518                                 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2519                                 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2520                         .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2521                         .phy_cap_info[1] =
2522                                 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2523                                 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2524                                 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2525                                 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2526                         .phy_cap_info[2] =
2527                                 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2528                                 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2529                                 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2530                                 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2531                                 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2532
2533                         /* Leave all the other PHY capability bytes unset, as
2534                          * DCM, beam forming, RU and PPE threshold information
2535                          * are not supported
2536                          */
2537                 },
2538                 .he_mcs_nss_supp = {
2539                         .rx_mcs_80 = cpu_to_le16(0xfffa),
2540                         .tx_mcs_80 = cpu_to_le16(0xfffa),
2541                         .rx_mcs_160 = cpu_to_le16(0xffff),
2542                         .tx_mcs_160 = cpu_to_le16(0xffff),
2543                         .rx_mcs_80p80 = cpu_to_le16(0xffff),
2544                         .tx_mcs_80p80 = cpu_to_le16(0xffff),
2545                 },
2546         },
2547 };
2548
2549 static const struct ieee80211_sband_iftype_data he_capa_5ghz = {
2550         /* TODO: should we support other types, e.g., P2P?*/
2551         .types_mask = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP),
2552         .he_cap = {
2553                 .has_he = true,
2554                 .he_cap_elem = {
2555                         .mac_cap_info[0] =
2556                                 IEEE80211_HE_MAC_CAP0_HTC_HE,
2557                         .mac_cap_info[1] =
2558                                 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2559                                 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2560                         .mac_cap_info[2] =
2561                                 IEEE80211_HE_MAC_CAP2_BSR |
2562                                 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2563                                 IEEE80211_HE_MAC_CAP2_ACK_EN,
2564                         .mac_cap_info[3] =
2565                                 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2566                                 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2567                         .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2568                         .phy_cap_info[0] =
2569                                 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2570                                 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2571                                 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2572                         .phy_cap_info[1] =
2573                                 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2574                                 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2575                                 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2576                                 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2577                         .phy_cap_info[2] =
2578                                 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2579                                 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2580                                 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2581                                 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2582                                 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2583
2584                         /* Leave all the other PHY capability bytes unset, as
2585                          * DCM, beam forming, RU and PPE threshold information
2586                          * are not supported
2587                          */
2588                 },
2589                 .he_mcs_nss_supp = {
2590                         .rx_mcs_80 = cpu_to_le16(0xfffa),
2591                         .tx_mcs_80 = cpu_to_le16(0xfffa),
2592                         .rx_mcs_160 = cpu_to_le16(0xfffa),
2593                         .tx_mcs_160 = cpu_to_le16(0xfffa),
2594                         .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2595                         .tx_mcs_80p80 = cpu_to_le16(0xfffa),
2596                 },
2597         },
2598 };
2599
2600 static void mac80211_hswim_he_capab(struct ieee80211_supported_band *sband)
2601 {
2602         if (sband->band == NL80211_BAND_2GHZ)
2603                 sband->iftype_data =
2604                         (struct ieee80211_sband_iftype_data *)&he_capa_2ghz;
2605         else if (sband->band == NL80211_BAND_5GHZ)
2606                 sband->iftype_data =
2607                         (struct ieee80211_sband_iftype_data *)&he_capa_5ghz;
2608         else
2609                 return;
2610
2611         sband->n_iftype_data = 1;
2612 }
2613
2614 #ifdef CONFIG_MAC80211_MESH
2615 #define HWSIM_MESH_BIT BIT(NL80211_IFTYPE_MESH_POINT)
2616 #else
2617 #define HWSIM_MESH_BIT 0
2618 #endif
2619
2620 #define HWSIM_DEFAULT_IF_LIMIT \
2621         (BIT(NL80211_IFTYPE_STATION) | \
2622          BIT(NL80211_IFTYPE_P2P_CLIENT) | \
2623          BIT(NL80211_IFTYPE_AP) | \
2624          BIT(NL80211_IFTYPE_P2P_GO) | \
2625          HWSIM_MESH_BIT)
2626
2627 #define HWSIM_IFTYPE_SUPPORT_MASK \
2628         (BIT(NL80211_IFTYPE_STATION) | \
2629          BIT(NL80211_IFTYPE_AP) | \
2630          BIT(NL80211_IFTYPE_P2P_CLIENT) | \
2631          BIT(NL80211_IFTYPE_P2P_GO) | \
2632          BIT(NL80211_IFTYPE_ADHOC) | \
2633          BIT(NL80211_IFTYPE_MESH_POINT))
2634
2635 static int mac80211_hwsim_new_radio(struct genl_info *info,
2636                                     struct hwsim_new_radio_params *param)
2637 {
2638         int err;
2639         u8 addr[ETH_ALEN];
2640         struct mac80211_hwsim_data *data;
2641         struct ieee80211_hw *hw;
2642         enum nl80211_band band;
2643         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2644         struct net *net;
2645         int idx;
2646         int n_limits = 0;
2647
2648         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2649                 return -EINVAL;
2650
2651         spin_lock_bh(&hwsim_radio_lock);
2652         idx = hwsim_radio_idx++;
2653         spin_unlock_bh(&hwsim_radio_lock);
2654
2655         if (param->use_chanctx)
2656                 ops = &mac80211_hwsim_mchan_ops;
2657         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2658         if (!hw) {
2659                 pr_debug("mac80211_hwsim: ieee80211_alloc_hw failed\n");
2660                 err = -ENOMEM;
2661                 goto failed;
2662         }
2663
2664         /* ieee80211_alloc_hw_nm may have used a default name */
2665         param->hwname = wiphy_name(hw->wiphy);
2666
2667         if (info)
2668                 net = genl_info_net(info);
2669         else
2670                 net = &init_net;
2671         wiphy_net_set(hw->wiphy, net);
2672
2673         data = hw->priv;
2674         data->hw = hw;
2675
2676         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2677         if (IS_ERR(data->dev)) {
2678                 printk(KERN_DEBUG
2679                        "mac80211_hwsim: device_create failed (%ld)\n",
2680                        PTR_ERR(data->dev));
2681                 err = -ENOMEM;
2682                 goto failed_drvdata;
2683         }
2684         data->dev->driver = &mac80211_hwsim_driver.driver;
2685         err = device_bind_driver(data->dev);
2686         if (err != 0) {
2687                 pr_debug("mac80211_hwsim: device_bind_driver failed (%d)\n",
2688                        err);
2689                 goto failed_bind;
2690         }
2691
2692         skb_queue_head_init(&data->pending);
2693
2694         SET_IEEE80211_DEV(hw, data->dev);
2695         if (!param->perm_addr) {
2696                 eth_zero_addr(addr);
2697                 addr[0] = 0x02;
2698                 addr[3] = idx >> 8;
2699                 addr[4] = idx;
2700                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2701                 /* Why need here second address ? */
2702                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2703                 data->addresses[1].addr[0] |= 0x40;
2704                 hw->wiphy->n_addresses = 2;
2705                 hw->wiphy->addresses = data->addresses;
2706                 /* possible address clash is checked at hash table insertion */
2707         } else {
2708                 memcpy(data->addresses[0].addr, param->perm_addr, ETH_ALEN);
2709                 /* compatibility with automatically generated mac addr */
2710                 memcpy(data->addresses[1].addr, param->perm_addr, ETH_ALEN);
2711                 hw->wiphy->n_addresses = 2;
2712                 hw->wiphy->addresses = data->addresses;
2713         }
2714
2715         data->channels = param->channels;
2716         data->use_chanctx = param->use_chanctx;
2717         data->idx = idx;
2718         data->destroy_on_close = param->destroy_on_close;
2719         if (info)
2720                 data->portid = info->snd_portid;
2721
2722         /* setup interface limits, only on interface types we support */
2723         if (param->iftypes & BIT(NL80211_IFTYPE_ADHOC)) {
2724                 data->if_limits[n_limits].max = 1;
2725                 data->if_limits[n_limits].types = BIT(NL80211_IFTYPE_ADHOC);
2726                 n_limits++;
2727         }
2728
2729         if (param->iftypes & HWSIM_DEFAULT_IF_LIMIT) {
2730                 data->if_limits[n_limits].max = 2048;
2731                 /*
2732                  * For this case, we may only support a subset of
2733                  * HWSIM_DEFAULT_IF_LIMIT, therefore we only want to add the
2734                  * bits that both param->iftype & HWSIM_DEFAULT_IF_LIMIT have.
2735                  */
2736                 data->if_limits[n_limits].types =
2737                                         HWSIM_DEFAULT_IF_LIMIT & param->iftypes;
2738                 n_limits++;
2739         }
2740
2741         if (param->iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
2742                 data->if_limits[n_limits].max = 1;
2743                 data->if_limits[n_limits].types =
2744                                                 BIT(NL80211_IFTYPE_P2P_DEVICE);
2745                 n_limits++;
2746         }
2747
2748         if (data->use_chanctx) {
2749                 hw->wiphy->max_scan_ssids = 255;
2750                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2751                 hw->wiphy->max_remain_on_channel_duration = 1000;
2752                 data->if_combination.radar_detect_widths = 0;
2753                 data->if_combination.num_different_channels = data->channels;
2754         } else {
2755                 data->if_combination.num_different_channels = 1;
2756                 data->if_combination.radar_detect_widths =
2757                                         BIT(NL80211_CHAN_WIDTH_20_NOHT) |
2758                                         BIT(NL80211_CHAN_WIDTH_20) |
2759                                         BIT(NL80211_CHAN_WIDTH_40) |
2760                                         BIT(NL80211_CHAN_WIDTH_80) |
2761                                         BIT(NL80211_CHAN_WIDTH_160);
2762         }
2763
2764         if (!n_limits) {
2765                 err = -EINVAL;
2766                 goto failed_hw;
2767         }
2768
2769         data->if_combination.n_limits = n_limits;
2770         data->if_combination.max_interfaces = 2048;
2771         data->if_combination.limits = data->if_limits;
2772
2773         hw->wiphy->iface_combinations = &data->if_combination;
2774         hw->wiphy->n_iface_combinations = 1;
2775
2776         if (param->ciphers) {
2777                 memcpy(data->ciphers, param->ciphers,
2778                        param->n_ciphers * sizeof(u32));
2779                 hw->wiphy->cipher_suites = data->ciphers;
2780                 hw->wiphy->n_cipher_suites = param->n_ciphers;
2781         }
2782
2783         INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2784         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2785         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2786
2787         hw->queues = 5;
2788         hw->offchannel_tx_hw_queue = 4;
2789
2790         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2791         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2792         ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2793         ieee80211_hw_set(hw, QUEUE_CONTROL);
2794         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2795         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2796         ieee80211_hw_set(hw, MFP_CAPABLE);
2797         ieee80211_hw_set(hw, SIGNAL_DBM);
2798         ieee80211_hw_set(hw, SUPPORTS_PS);
2799         ieee80211_hw_set(hw, TDLS_WIDER_BW);
2800         if (rctbl)
2801                 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2802
2803         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2804                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2805                             WIPHY_FLAG_AP_UAPSD |
2806                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2807         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2808                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2809                                NL80211_FEATURE_STATIC_SMPS |
2810                                NL80211_FEATURE_DYNAMIC_SMPS |
2811                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2812         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2813
2814         hw->wiphy->interface_modes = param->iftypes;
2815
2816         /* ask mac80211 to reserve space for magic */
2817         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2818         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2819         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2820
2821         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2822                 sizeof(hwsim_channels_2ghz));
2823         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2824                 sizeof(hwsim_channels_5ghz));
2825         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2826
2827         for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2828                 struct ieee80211_supported_band *sband = &data->bands[band];
2829
2830                 sband->band = band;
2831
2832                 switch (band) {
2833                 case NL80211_BAND_2GHZ:
2834                         sband->channels = data->channels_2ghz;
2835                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2836                         sband->bitrates = data->rates;
2837                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2838                         break;
2839                 case NL80211_BAND_5GHZ:
2840                         sband->channels = data->channels_5ghz;
2841                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2842                         sband->bitrates = data->rates + 4;
2843                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2844
2845                         sband->vht_cap.vht_supported = true;
2846                         sband->vht_cap.cap =
2847                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2848                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2849                                 IEEE80211_VHT_CAP_RXLDPC |
2850                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2851                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2852                                 IEEE80211_VHT_CAP_TXSTBC |
2853                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2854                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2855                         sband->vht_cap.vht_mcs.rx_mcs_map =
2856                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2857                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2858                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2859                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2860                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2861                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2862                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2863                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2864                         sband->vht_cap.vht_mcs.tx_mcs_map =
2865                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2866                         break;
2867                 default:
2868                         continue;
2869                 }
2870
2871                 sband->ht_cap.ht_supported = true;
2872                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2873                                     IEEE80211_HT_CAP_GRN_FLD |
2874                                     IEEE80211_HT_CAP_SGI_20 |
2875                                     IEEE80211_HT_CAP_SGI_40 |
2876                                     IEEE80211_HT_CAP_DSSSCCK40;
2877                 sband->ht_cap.ampdu_factor = 0x3;
2878                 sband->ht_cap.ampdu_density = 0x6;
2879                 memset(&sband->ht_cap.mcs, 0,
2880                        sizeof(sband->ht_cap.mcs));
2881                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2882                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2883                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2884
2885                 mac80211_hswim_he_capab(sband);
2886
2887                 hw->wiphy->bands[band] = sband;
2888         }
2889
2890         /* By default all radios belong to the first group */
2891         data->group = 1;
2892         mutex_init(&data->mutex);
2893
2894         data->netgroup = hwsim_net_get_netgroup(net);
2895         data->wmediumd = hwsim_net_get_wmediumd(net);
2896
2897         /* Enable frame retransmissions for lossy channels */
2898         hw->max_rates = 4;
2899         hw->max_rate_tries = 11;
2900
2901         hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2902         hw->wiphy->n_vendor_commands =
2903                 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2904         hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2905         hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2906
2907         if (param->reg_strict)
2908                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2909         if (param->regd) {
2910                 data->regd = param->regd;
2911                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2912                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2913                 /* give the regulatory workqueue a chance to run */
2914                 schedule_timeout_interruptible(1);
2915         }
2916
2917         if (param->no_vif)
2918                 ieee80211_hw_set(hw, NO_AUTO_VIF);
2919
2920         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
2921
2922         tasklet_hrtimer_init(&data->beacon_timer,
2923                              mac80211_hwsim_beacon,
2924                              CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2925
2926         err = ieee80211_register_hw(hw);
2927         if (err < 0) {
2928                 pr_debug("mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2929                        err);
2930                 goto failed_hw;
2931         }
2932
2933         wiphy_dbg(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2934
2935         if (param->reg_alpha2) {
2936                 data->alpha2[0] = param->reg_alpha2[0];
2937                 data->alpha2[1] = param->reg_alpha2[1];
2938                 regulatory_hint(hw->wiphy, param->reg_alpha2);
2939         }
2940
2941         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2942         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2943         debugfs_create_file("group", 0666, data->debugfs, data,
2944                             &hwsim_fops_group);
2945         if (!data->use_chanctx)
2946                 debugfs_create_file("dfs_simulate_radar", 0222,
2947                                     data->debugfs,
2948                                     data, &hwsim_simulate_radar);
2949
2950         spin_lock_bh(&hwsim_radio_lock);
2951         err = rhashtable_insert_fast(&hwsim_radios_rht, &data->rht,
2952                                      hwsim_rht_params);
2953         if (err < 0) {
2954                 if (info) {
2955                         GENL_SET_ERR_MSG(info, "perm addr already present");
2956                         NL_SET_BAD_ATTR(info->extack,
2957                                         info->attrs[HWSIM_ATTR_PERM_ADDR]);
2958                 }
2959                 spin_unlock_bh(&hwsim_radio_lock);
2960                 goto failed_final_insert;
2961         }
2962
2963         list_add_tail(&data->list, &hwsim_radios);
2964         hwsim_radios_generation++;
2965         spin_unlock_bh(&hwsim_radio_lock);
2966
2967         hwsim_mcast_new_radio(idx, info, param);
2968
2969         return idx;
2970
2971 failed_final_insert:
2972         debugfs_remove_recursive(data->debugfs);
2973         ieee80211_unregister_hw(data->hw);
2974 failed_hw:
2975         device_release_driver(data->dev);
2976 failed_bind:
2977         device_unregister(data->dev);
2978 failed_drvdata:
2979         ieee80211_free_hw(hw);
2980 failed:
2981         return err;
2982 }
2983
2984 static void hwsim_mcast_del_radio(int id, const char *hwname,
2985                                   struct genl_info *info)
2986 {
2987         struct sk_buff *skb;
2988         void *data;
2989         int ret;
2990
2991         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2992         if (!skb)
2993                 return;
2994
2995         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2996                            HWSIM_CMD_DEL_RADIO);
2997         if (!data)
2998                 goto error;
2999
3000         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
3001         if (ret < 0)
3002                 goto error;
3003
3004         ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
3005                       hwname);
3006         if (ret < 0)
3007                 goto error;
3008
3009         genlmsg_end(skb, data);
3010
3011         hwsim_mcast_config_msg(skb, info);
3012
3013         return;
3014
3015 error:
3016         nlmsg_free(skb);
3017 }
3018
3019 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
3020                                      const char *hwname,
3021                                      struct genl_info *info)
3022 {
3023         hwsim_mcast_del_radio(data->idx, hwname, info);
3024         debugfs_remove_recursive(data->debugfs);
3025         ieee80211_unregister_hw(data->hw);
3026         device_release_driver(data->dev);
3027         device_unregister(data->dev);
3028         ieee80211_free_hw(data->hw);
3029 }
3030
3031 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
3032                                     struct mac80211_hwsim_data *data,
3033                                     u32 portid, u32 seq,
3034                                     struct netlink_callback *cb, int flags)
3035 {
3036         void *hdr;
3037         struct hwsim_new_radio_params param = { };
3038         int res = -EMSGSIZE;
3039
3040         hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
3041                           HWSIM_CMD_GET_RADIO);
3042         if (!hdr)
3043                 return -EMSGSIZE;
3044
3045         if (cb)
3046                 genl_dump_check_consistent(cb, hdr);
3047
3048         if (data->alpha2[0] && data->alpha2[1])
3049                 param.reg_alpha2 = data->alpha2;
3050
3051         param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
3052                                         REGULATORY_STRICT_REG);
3053         param.p2p_device = !!(data->hw->wiphy->interface_modes &
3054                                         BIT(NL80211_IFTYPE_P2P_DEVICE));
3055         param.use_chanctx = data->use_chanctx;
3056         param.regd = data->regd;
3057         param.channels = data->channels;
3058         param.hwname = wiphy_name(data->hw->wiphy);
3059
3060         res = append_radio_msg(skb, data->idx, &param);
3061         if (res < 0)
3062                 goto out_err;
3063
3064         genlmsg_end(skb, hdr);
3065         return 0;
3066
3067 out_err:
3068         genlmsg_cancel(skb, hdr);
3069         return res;
3070 }
3071
3072 static void mac80211_hwsim_free(void)
3073 {
3074         struct mac80211_hwsim_data *data;
3075
3076         spin_lock_bh(&hwsim_radio_lock);
3077         while ((data = list_first_entry_or_null(&hwsim_radios,
3078                                                 struct mac80211_hwsim_data,
3079                                                 list))) {
3080                 list_del(&data->list);
3081                 spin_unlock_bh(&hwsim_radio_lock);
3082                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3083                                          NULL);
3084                 spin_lock_bh(&hwsim_radio_lock);
3085         }
3086         spin_unlock_bh(&hwsim_radio_lock);
3087         class_destroy(hwsim_class);
3088 }
3089
3090 static const struct net_device_ops hwsim_netdev_ops = {
3091         .ndo_start_xmit         = hwsim_mon_xmit,
3092         .ndo_set_mac_address    = eth_mac_addr,
3093         .ndo_validate_addr      = eth_validate_addr,
3094 };
3095
3096 static void hwsim_mon_setup(struct net_device *dev)
3097 {
3098         dev->netdev_ops = &hwsim_netdev_ops;
3099         dev->needs_free_netdev = true;
3100         ether_setup(dev);
3101         dev->priv_flags |= IFF_NO_QUEUE;
3102         dev->type = ARPHRD_IEEE80211_RADIOTAP;
3103         eth_zero_addr(dev->dev_addr);
3104         dev->dev_addr[0] = 0x12;
3105 }
3106
3107 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
3108 {
3109         return rhashtable_lookup_fast(&hwsim_radios_rht,
3110                                       addr,
3111                                       hwsim_rht_params);
3112 }
3113
3114 static void hwsim_register_wmediumd(struct net *net, u32 portid)
3115 {
3116         struct mac80211_hwsim_data *data;
3117
3118         hwsim_net_set_wmediumd(net, portid);
3119
3120         spin_lock_bh(&hwsim_radio_lock);
3121         list_for_each_entry(data, &hwsim_radios, list) {
3122                 if (data->netgroup == hwsim_net_get_netgroup(net))
3123                         data->wmediumd = portid;
3124         }
3125         spin_unlock_bh(&hwsim_radio_lock);
3126 }
3127
3128 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
3129                                            struct genl_info *info)
3130 {
3131
3132         struct ieee80211_hdr *hdr;
3133         struct mac80211_hwsim_data *data2;
3134         struct ieee80211_tx_info *txi;
3135         struct hwsim_tx_rate *tx_attempts;
3136         u64 ret_skb_cookie;
3137         struct sk_buff *skb, *tmp;
3138         const u8 *src;
3139         unsigned int hwsim_flags;
3140         int i;
3141         bool found = false;
3142
3143         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
3144             !info->attrs[HWSIM_ATTR_FLAGS] ||
3145             !info->attrs[HWSIM_ATTR_COOKIE] ||
3146             !info->attrs[HWSIM_ATTR_SIGNAL] ||
3147             !info->attrs[HWSIM_ATTR_TX_INFO])
3148                 goto out;
3149
3150         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
3151         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
3152         ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
3153
3154         data2 = get_hwsim_data_ref_from_addr(src);
3155         if (!data2)
3156                 goto out;
3157
3158         if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
3159                 goto out;
3160
3161         if (info->snd_portid != data2->wmediumd)
3162                 goto out;
3163
3164         /* look for the skb matching the cookie passed back from user */
3165         skb_queue_walk_safe(&data2->pending, skb, tmp) {
3166                 u64 skb_cookie;
3167
3168                 txi = IEEE80211_SKB_CB(skb);
3169                 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
3170
3171                 if (skb_cookie == ret_skb_cookie) {
3172                         skb_unlink(skb, &data2->pending);
3173                         found = true;
3174                         break;
3175                 }
3176         }
3177
3178         /* not found */
3179         if (!found)
3180                 goto out;
3181
3182         /* Tx info received because the frame was broadcasted on user space,
3183          so we get all the necessary info: tx attempts and skb control buff */
3184
3185         tx_attempts = (struct hwsim_tx_rate *)nla_data(
3186                        info->attrs[HWSIM_ATTR_TX_INFO]);
3187
3188         /* now send back TX status */
3189         txi = IEEE80211_SKB_CB(skb);
3190
3191         ieee80211_tx_info_clear_status(txi);
3192
3193         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
3194                 txi->status.rates[i].idx = tx_attempts[i].idx;
3195                 txi->status.rates[i].count = tx_attempts[i].count;
3196         }
3197
3198         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3199
3200         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
3201            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
3202                 if (skb->len >= 16) {
3203                         hdr = (struct ieee80211_hdr *) skb->data;
3204                         mac80211_hwsim_monitor_ack(data2->channel,
3205                                                    hdr->addr2);
3206                 }
3207                 txi->flags |= IEEE80211_TX_STAT_ACK;
3208         }
3209         ieee80211_tx_status_irqsafe(data2->hw, skb);
3210         return 0;
3211 out:
3212         return -EINVAL;
3213
3214 }
3215
3216 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
3217                                           struct genl_info *info)
3218 {
3219         struct mac80211_hwsim_data *data2;
3220         struct ieee80211_rx_status rx_status;
3221         const u8 *dst;
3222         int frame_data_len;
3223         void *frame_data;
3224         struct sk_buff *skb = NULL;
3225
3226         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
3227             !info->attrs[HWSIM_ATTR_FRAME] ||
3228             !info->attrs[HWSIM_ATTR_RX_RATE] ||
3229             !info->attrs[HWSIM_ATTR_SIGNAL])
3230                 goto out;
3231
3232         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
3233         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3234         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3235
3236         /* Allocate new skb here */
3237         skb = alloc_skb(frame_data_len, GFP_KERNEL);
3238         if (skb == NULL)
3239                 goto err;
3240
3241         if (frame_data_len > IEEE80211_MAX_DATA_LEN)
3242                 goto err;
3243
3244         /* Copy the data */
3245         skb_put_data(skb, frame_data, frame_data_len);
3246
3247         data2 = get_hwsim_data_ref_from_addr(dst);
3248         if (!data2)
3249                 goto out;
3250
3251         if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
3252                 goto out;
3253
3254         if (info->snd_portid != data2->wmediumd)
3255                 goto out;
3256
3257         /* check if radio is configured properly */
3258
3259         if (data2->idle || !data2->started)
3260                 goto out;
3261
3262         /* A frame is received from user space */
3263         memset(&rx_status, 0, sizeof(rx_status));
3264         if (info->attrs[HWSIM_ATTR_FREQ]) {
3265                 /* throw away off-channel packets, but allow both the temporary
3266                  * ("hw" scan/remain-on-channel) and regular channel, since the
3267                  * internal datapath also allows this
3268                  */
3269                 mutex_lock(&data2->mutex);
3270                 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
3271
3272                 if (rx_status.freq != data2->channel->center_freq &&
3273                     (!data2->tmp_chan ||
3274                      rx_status.freq != data2->tmp_chan->center_freq)) {
3275                         mutex_unlock(&data2->mutex);
3276                         goto out;
3277                 }
3278                 mutex_unlock(&data2->mutex);
3279         } else {
3280                 rx_status.freq = data2->channel->center_freq;
3281         }
3282
3283         rx_status.band = data2->channel->band;
3284         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3285         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3286
3287         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3288         data2->rx_pkts++;
3289         data2->rx_bytes += skb->len;
3290         ieee80211_rx_irqsafe(data2->hw, skb);
3291
3292         return 0;
3293 err:
3294         pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3295 out:
3296         dev_kfree_skb(skb);
3297         return -EINVAL;
3298 }
3299
3300 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3301                                       struct genl_info *info)
3302 {
3303         struct net *net = genl_info_net(info);
3304         struct mac80211_hwsim_data *data;
3305         int chans = 1;
3306
3307         spin_lock_bh(&hwsim_radio_lock);
3308         list_for_each_entry(data, &hwsim_radios, list)
3309                 chans = max(chans, data->channels);
3310         spin_unlock_bh(&hwsim_radio_lock);
3311
3312         /* In the future we should revise the userspace API and allow it
3313          * to set a flag that it does support multi-channel, then we can
3314          * let this pass conditionally on the flag.
3315          * For current userspace, prohibit it since it won't work right.
3316          */
3317         if (chans > 1)
3318                 return -EOPNOTSUPP;
3319
3320         if (hwsim_net_get_wmediumd(net))
3321                 return -EBUSY;
3322
3323         hwsim_register_wmediumd(net, info->snd_portid);
3324
3325         pr_debug("mac80211_hwsim: received a REGISTER, "
3326                "switching to wmediumd mode with pid %d\n", info->snd_portid);
3327
3328         return 0;
3329 }
3330
3331 /* ensures ciphers only include ciphers listed in 'hwsim_ciphers' array */
3332 static bool hwsim_known_ciphers(const u32 *ciphers, int n_ciphers)
3333 {
3334         int i;
3335
3336         for (i = 0; i < n_ciphers; i++) {
3337                 int j;
3338                 int found = 0;
3339
3340                 for (j = 0; j < ARRAY_SIZE(hwsim_ciphers); j++) {
3341                         if (ciphers[i] == hwsim_ciphers[j]) {
3342                                 found = 1;
3343                                 break;
3344                         }
3345                 }
3346
3347                 if (!found)
3348                         return false;
3349         }
3350
3351         return true;
3352 }
3353
3354 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3355 {
3356         struct hwsim_new_radio_params param = { 0 };
3357         const char *hwname = NULL;
3358         int ret;
3359
3360         param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3361         param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3362         param.channels = channels;
3363         param.destroy_on_close =
3364                 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3365
3366         if (info->attrs[HWSIM_ATTR_CHANNELS])
3367                 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3368
3369         if (param.channels < 1) {
3370                 GENL_SET_ERR_MSG(info, "must have at least one channel");
3371                 return -EINVAL;
3372         }
3373
3374         if (param.channels > CFG80211_MAX_NUM_DIFFERENT_CHANNELS) {
3375                 GENL_SET_ERR_MSG(info, "too many channels specified");
3376                 return -EINVAL;
3377         }
3378
3379         if (info->attrs[HWSIM_ATTR_NO_VIF])
3380                 param.no_vif = true;
3381
3382         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3383                 param.use_chanctx = true;
3384         else
3385                 param.use_chanctx = (param.channels > 1);
3386
3387         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3388                 param.reg_alpha2 =
3389                         nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3390
3391         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3392                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3393
3394                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3395                         return -EINVAL;
3396
3397                 idx = array_index_nospec(idx,
3398                                          ARRAY_SIZE(hwsim_world_regdom_custom));
3399                 param.regd = hwsim_world_regdom_custom[idx];
3400         }
3401
3402         if (info->attrs[HWSIM_ATTR_PERM_ADDR]) {
3403                 if (!is_valid_ether_addr(
3404                                 nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]))) {
3405                         GENL_SET_ERR_MSG(info,"MAC is no valid source addr");
3406                         NL_SET_BAD_ATTR(info->extack,
3407                                         info->attrs[HWSIM_ATTR_PERM_ADDR]);
3408                         return -EINVAL;
3409                 }
3410
3411                 param.perm_addr = nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]);
3412         }
3413
3414         if (info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]) {
3415                 param.iftypes =
3416                         nla_get_u32(info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]);
3417
3418                 if (param.iftypes & ~HWSIM_IFTYPE_SUPPORT_MASK) {
3419                         NL_SET_ERR_MSG_ATTR(info->extack,
3420                                             info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT],
3421                                             "cannot support more iftypes than kernel");
3422                         return -EINVAL;
3423                 }
3424         } else {
3425                 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
3426         }
3427
3428         /* ensure both flag and iftype support is honored */
3429         if (param.p2p_device ||
3430             param.iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
3431                 param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
3432                 param.p2p_device = true;
3433         }
3434
3435         if (info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]) {
3436                 u32 len = nla_len(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3437
3438                 param.ciphers =
3439                         nla_data(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3440
3441                 if (len % sizeof(u32)) {
3442                         NL_SET_ERR_MSG_ATTR(info->extack,
3443                                             info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3444                                             "bad cipher list length");
3445                         return -EINVAL;
3446                 }
3447
3448                 param.n_ciphers = len / sizeof(u32);
3449
3450                 if (param.n_ciphers > ARRAY_SIZE(hwsim_ciphers)) {
3451                         NL_SET_ERR_MSG_ATTR(info->extack,
3452                                             info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3453                                             "too many ciphers specified");
3454                         return -EINVAL;
3455                 }
3456
3457                 if (!hwsim_known_ciphers(param.ciphers, param.n_ciphers)) {
3458                         NL_SET_ERR_MSG_ATTR(info->extack,
3459                                             info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3460                                             "unsupported ciphers specified");
3461                         return -EINVAL;
3462                 }
3463         }
3464
3465         if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3466                 hwname = kasprintf(GFP_KERNEL, "%.*s",
3467                                    nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3468                                    (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3469                 if (!hwname)
3470                         return -ENOMEM;
3471                 param.hwname = hwname;
3472         }
3473
3474         ret = mac80211_hwsim_new_radio(info, &param);
3475         kfree(hwname);
3476         return ret;
3477 }
3478
3479 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3480 {
3481         struct mac80211_hwsim_data *data;
3482         s64 idx = -1;
3483         const char *hwname = NULL;
3484
3485         if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3486                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3487         } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3488                 hwname = kasprintf(GFP_KERNEL, "%.*s",
3489                                    nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3490                                    (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3491                 if (!hwname)
3492                         return -ENOMEM;
3493         } else
3494                 return -EINVAL;
3495
3496         spin_lock_bh(&hwsim_radio_lock);
3497         list_for_each_entry(data, &hwsim_radios, list) {
3498                 if (idx >= 0) {
3499                         if (data->idx != idx)
3500                                 continue;
3501                 } else {
3502                         if (!hwname ||
3503                             strcmp(hwname, wiphy_name(data->hw->wiphy)))
3504                                 continue;
3505                 }
3506
3507                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3508                         continue;
3509
3510                 list_del(&data->list);
3511                 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
3512                                        hwsim_rht_params);
3513                 hwsim_radios_generation++;
3514                 spin_unlock_bh(&hwsim_radio_lock);
3515                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3516                                          info);
3517                 kfree(hwname);
3518                 return 0;
3519         }
3520         spin_unlock_bh(&hwsim_radio_lock);
3521
3522         kfree(hwname);
3523         return -ENODEV;
3524 }
3525
3526 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3527 {
3528         struct mac80211_hwsim_data *data;
3529         struct sk_buff *skb;
3530         int idx, res = -ENODEV;
3531
3532         if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3533                 return -EINVAL;
3534         idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3535
3536         spin_lock_bh(&hwsim_radio_lock);
3537         list_for_each_entry(data, &hwsim_radios, list) {
3538                 if (data->idx != idx)
3539                         continue;
3540
3541                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3542                         continue;
3543
3544                 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3545                 if (!skb) {
3546                         res = -ENOMEM;
3547                         goto out_err;
3548                 }
3549
3550                 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3551                                                info->snd_seq, NULL, 0);
3552                 if (res < 0) {
3553                         nlmsg_free(skb);
3554                         goto out_err;
3555                 }
3556
3557                 res = genlmsg_reply(skb, info);
3558                 break;
3559         }
3560
3561 out_err:
3562         spin_unlock_bh(&hwsim_radio_lock);
3563
3564         return res;
3565 }
3566
3567 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3568                                struct netlink_callback *cb)
3569 {
3570         int last_idx = cb->args[0] - 1;
3571         struct mac80211_hwsim_data *data = NULL;
3572         int res = 0;
3573         void *hdr;
3574
3575         spin_lock_bh(&hwsim_radio_lock);
3576         cb->seq = hwsim_radios_generation;
3577
3578         if (last_idx >= hwsim_radio_idx-1)
3579                 goto done;
3580
3581         list_for_each_entry(data, &hwsim_radios, list) {
3582                 if (data->idx <= last_idx)
3583                         continue;
3584
3585                 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3586                         continue;
3587
3588                 res = mac80211_hwsim_get_radio(skb, data,
3589                                                NETLINK_CB(cb->skb).portid,
3590                                                cb->nlh->nlmsg_seq, cb,
3591                                                NLM_F_MULTI);
3592                 if (res < 0)
3593                         break;
3594
3595                 last_idx = data->idx;
3596         }
3597
3598         cb->args[0] = last_idx + 1;
3599
3600         /* list changed, but no new element sent, set interrupted flag */
3601         if (skb->len == 0 && cb->prev_seq && cb->seq != cb->prev_seq) {
3602                 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid,
3603                                   cb->nlh->nlmsg_seq, &hwsim_genl_family,
3604                                   NLM_F_MULTI, HWSIM_CMD_GET_RADIO);
3605                 if (!hdr)
3606                         res = -EMSGSIZE;
3607                 genl_dump_check_consistent(cb, hdr);
3608                 genlmsg_end(skb, hdr);
3609         }
3610
3611 done:
3612         spin_unlock_bh(&hwsim_radio_lock);
3613         return res ?: skb->len;
3614 }
3615
3616 /* Generic Netlink operations array */
3617 static const struct genl_ops hwsim_ops[] = {
3618         {
3619                 .cmd = HWSIM_CMD_REGISTER,
3620                 .policy = hwsim_genl_policy,
3621                 .doit = hwsim_register_received_nl,
3622                 .flags = GENL_UNS_ADMIN_PERM,
3623         },
3624         {
3625                 .cmd = HWSIM_CMD_FRAME,
3626                 .policy = hwsim_genl_policy,
3627                 .doit = hwsim_cloned_frame_received_nl,
3628         },
3629         {
3630                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3631                 .policy = hwsim_genl_policy,
3632                 .doit = hwsim_tx_info_frame_received_nl,
3633         },
3634         {
3635                 .cmd = HWSIM_CMD_NEW_RADIO,
3636                 .policy = hwsim_genl_policy,
3637                 .doit = hwsim_new_radio_nl,
3638                 .flags = GENL_UNS_ADMIN_PERM,
3639         },
3640         {
3641                 .cmd = HWSIM_CMD_DEL_RADIO,
3642                 .policy = hwsim_genl_policy,
3643                 .doit = hwsim_del_radio_nl,
3644                 .flags = GENL_UNS_ADMIN_PERM,
3645         },
3646         {
3647                 .cmd = HWSIM_CMD_GET_RADIO,
3648                 .policy = hwsim_genl_policy,
3649                 .doit = hwsim_get_radio_nl,
3650                 .dumpit = hwsim_dump_radio_nl,
3651         },
3652 };
3653
3654 static struct genl_family hwsim_genl_family __ro_after_init = {
3655         .name = "MAC80211_HWSIM",
3656         .version = 1,
3657         .maxattr = HWSIM_ATTR_MAX,
3658         .netnsok = true,
3659         .module = THIS_MODULE,
3660         .ops = hwsim_ops,
3661         .n_ops = ARRAY_SIZE(hwsim_ops),
3662         .mcgrps = hwsim_mcgrps,
3663         .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
3664 };
3665
3666 static void remove_user_radios(u32 portid)
3667 {
3668         struct mac80211_hwsim_data *entry, *tmp;
3669         LIST_HEAD(list);
3670
3671         spin_lock_bh(&hwsim_radio_lock);
3672         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3673                 if (entry->destroy_on_close && entry->portid == portid) {
3674                         list_move(&entry->list, &list);
3675                         rhashtable_remove_fast(&hwsim_radios_rht, &entry->rht,
3676                                                hwsim_rht_params);
3677                         hwsim_radios_generation++;
3678                 }
3679         }
3680         spin_unlock_bh(&hwsim_radio_lock);
3681
3682         list_for_each_entry_safe(entry, tmp, &list, list) {
3683                 list_del(&entry->list);
3684                 mac80211_hwsim_del_radio(entry, wiphy_name(entry->hw->wiphy),
3685                                          NULL);
3686         }
3687 }
3688
3689 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3690                                          unsigned long state,
3691                                          void *_notify)
3692 {
3693         struct netlink_notify *notify = _notify;
3694
3695         if (state != NETLINK_URELEASE)
3696                 return NOTIFY_DONE;
3697
3698         remove_user_radios(notify->portid);
3699
3700         if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3701                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3702                        " socket, switching to perfect channel medium\n");
3703                 hwsim_register_wmediumd(notify->net, 0);
3704         }
3705         return NOTIFY_DONE;
3706
3707 }
3708
3709 static struct notifier_block hwsim_netlink_notifier = {
3710         .notifier_call = mac80211_hwsim_netlink_notify,
3711 };
3712
3713 static int __init hwsim_init_netlink(void)
3714 {
3715         int rc;
3716
3717         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3718
3719         rc = genl_register_family(&hwsim_genl_family);
3720         if (rc)
3721                 goto failure;
3722
3723         rc = netlink_register_notifier(&hwsim_netlink_notifier);
3724         if (rc) {
3725                 genl_unregister_family(&hwsim_genl_family);
3726                 goto failure;
3727         }
3728
3729         return 0;
3730
3731 failure:
3732         pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3733         return -EINVAL;
3734 }
3735
3736 static __net_init int hwsim_init_net(struct net *net)
3737 {
3738         return hwsim_net_set_netgroup(net);
3739 }
3740
3741 static void __net_exit hwsim_exit_net(struct net *net)
3742 {
3743         struct mac80211_hwsim_data *data, *tmp;
3744         LIST_HEAD(list);
3745
3746         spin_lock_bh(&hwsim_radio_lock);
3747         list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
3748                 if (!net_eq(wiphy_net(data->hw->wiphy), net))
3749                         continue;
3750
3751                 /* Radios created in init_net are returned to init_net. */
3752                 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
3753                         continue;
3754
3755                 list_move(&data->list, &list);
3756                 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
3757                                        hwsim_rht_params);
3758                 hwsim_radios_generation++;
3759         }
3760         spin_unlock_bh(&hwsim_radio_lock);
3761
3762         list_for_each_entry_safe(data, tmp, &list, list) {
3763                 list_del(&data->list);
3764                 mac80211_hwsim_del_radio(data,
3765                                          wiphy_name(data->hw->wiphy),
3766                                          NULL);
3767         }
3768
3769         ida_simple_remove(&hwsim_netgroup_ida, hwsim_net_get_netgroup(net));
3770 }
3771
3772 static struct pernet_operations hwsim_net_ops = {
3773         .init = hwsim_init_net,
3774         .exit = hwsim_exit_net,
3775         .id   = &hwsim_net_id,
3776         .size = sizeof(struct hwsim_net),
3777 };
3778
3779 static void hwsim_exit_netlink(void)
3780 {
3781         /* unregister the notifier */
3782         netlink_unregister_notifier(&hwsim_netlink_notifier);
3783         /* unregister the family */
3784         genl_unregister_family(&hwsim_genl_family);
3785 }
3786
3787 static int __init init_mac80211_hwsim(void)
3788 {
3789         int i, err;
3790
3791         if (radios < 0 || radios > 100)
3792                 return -EINVAL;
3793
3794         if (channels < 1)
3795                 return -EINVAL;
3796
3797         spin_lock_init(&hwsim_radio_lock);
3798
3799         err = rhashtable_init(&hwsim_radios_rht, &hwsim_rht_params);
3800         if (err)
3801                 return err;
3802
3803         err = register_pernet_device(&hwsim_net_ops);
3804         if (err)
3805                 goto out_free_rht;
3806
3807         err = platform_driver_register(&mac80211_hwsim_driver);
3808         if (err)
3809                 goto out_unregister_pernet;
3810
3811         err = hwsim_init_netlink();
3812         if (err)
3813                 goto out_unregister_driver;
3814
3815         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3816         if (IS_ERR(hwsim_class)) {
3817                 err = PTR_ERR(hwsim_class);
3818                 goto out_exit_netlink;
3819         }
3820
3821         for (i = 0; i < radios; i++) {
3822                 struct hwsim_new_radio_params param = { 0 };
3823
3824                 param.channels = channels;
3825
3826                 switch (regtest) {
3827                 case HWSIM_REGTEST_DIFF_COUNTRY:
3828                         if (i < ARRAY_SIZE(hwsim_alpha2s))
3829                                 param.reg_alpha2 = hwsim_alpha2s[i];
3830                         break;
3831                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3832                         if (!i)
3833                                 param.reg_alpha2 = hwsim_alpha2s[0];
3834                         break;
3835                 case HWSIM_REGTEST_STRICT_ALL:
3836                         param.reg_strict = true;
3837                 case HWSIM_REGTEST_DRIVER_REG_ALL:
3838                         param.reg_alpha2 = hwsim_alpha2s[0];
3839                         break;
3840                 case HWSIM_REGTEST_WORLD_ROAM:
3841                         if (i == 0)
3842                                 param.regd = &hwsim_world_regdom_custom_01;
3843                         break;
3844                 case HWSIM_REGTEST_CUSTOM_WORLD:
3845                         param.regd = &hwsim_world_regdom_custom_01;
3846                         break;
3847                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3848                         if (i == 0)
3849                                 param.regd = &hwsim_world_regdom_custom_01;
3850                         else if (i == 1)
3851                                 param.regd = &hwsim_world_regdom_custom_02;
3852                         break;
3853                 case HWSIM_REGTEST_STRICT_FOLLOW:
3854                         if (i == 0) {
3855                                 param.reg_strict = true;
3856                                 param.reg_alpha2 = hwsim_alpha2s[0];
3857                         }
3858                         break;
3859                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3860                         if (i == 0) {
3861                                 param.reg_strict = true;
3862                                 param.reg_alpha2 = hwsim_alpha2s[0];
3863                         } else if (i == 1) {
3864                                 param.reg_alpha2 = hwsim_alpha2s[1];
3865                         }
3866                         break;
3867                 case HWSIM_REGTEST_ALL:
3868                         switch (i) {
3869                         case 0:
3870                                 param.regd = &hwsim_world_regdom_custom_01;
3871                                 break;
3872                         case 1:
3873                                 param.regd = &hwsim_world_regdom_custom_02;
3874                                 break;
3875                         case 2:
3876                                 param.reg_alpha2 = hwsim_alpha2s[0];
3877                                 break;
3878                         case 3:
3879                                 param.reg_alpha2 = hwsim_alpha2s[1];
3880                                 break;
3881                         case 4:
3882                                 param.reg_strict = true;
3883                                 param.reg_alpha2 = hwsim_alpha2s[2];
3884                                 break;
3885                         }
3886                         break;
3887                 default:
3888                         break;
3889                 }
3890
3891                 param.p2p_device = support_p2p_device;
3892                 param.use_chanctx = channels > 1;
3893                 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
3894
3895                 err = mac80211_hwsim_new_radio(NULL, &param);
3896                 if (err < 0)
3897                         goto out_free_radios;
3898         }
3899
3900         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3901                                  hwsim_mon_setup);
3902         if (hwsim_mon == NULL) {
3903                 err = -ENOMEM;
3904                 goto out_free_radios;
3905         }
3906
3907         rtnl_lock();
3908         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3909         if (err < 0) {
3910                 rtnl_unlock();
3911                 goto out_free_radios;
3912         }
3913
3914         err = register_netdevice(hwsim_mon);
3915         if (err < 0) {
3916                 rtnl_unlock();
3917                 goto out_free_mon;
3918         }
3919         rtnl_unlock();
3920
3921         return 0;
3922
3923 out_free_mon:
3924         free_netdev(hwsim_mon);
3925 out_free_radios:
3926         mac80211_hwsim_free();
3927 out_exit_netlink:
3928         hwsim_exit_netlink();
3929 out_unregister_driver:
3930         platform_driver_unregister(&mac80211_hwsim_driver);
3931 out_unregister_pernet:
3932         unregister_pernet_device(&hwsim_net_ops);
3933 out_free_rht:
3934         rhashtable_destroy(&hwsim_radios_rht);
3935         return err;
3936 }
3937 module_init(init_mac80211_hwsim);
3938
3939 static void __exit exit_mac80211_hwsim(void)
3940 {
3941         pr_debug("mac80211_hwsim: unregister radios\n");
3942
3943         hwsim_exit_netlink();
3944
3945         mac80211_hwsim_free();
3946
3947         rhashtable_destroy(&hwsim_radios_rht);
3948         unregister_netdev(hwsim_mon);
3949         platform_driver_unregister(&mac80211_hwsim_driver);
3950         unregister_pernet_device(&hwsim_net_ops);
3951 }
3952 module_exit(exit_mac80211_hwsim);