net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2014  Intel Mobile Communications GmbH
   6  *
   7  * This file is GPLv2 as found in COPYING.
   8  */
   9
  10 #include <linux/ieee80211.h>
  11 #include <linux/nl80211.h>
  12 #include <linux/rtnetlink.h>
  13 #include <linux/slab.h>
  14 #include <net/net_namespace.h>
  15 #include <linux/rcupdate.h>
  16 #include <linux/if_ether.h>
  17 #include <net/cfg80211.h>
  18 #include "ieee80211_i.h"
  19 #include "driver-ops.h"
  20 #include "cfg.h"
  21 #include "rate.h"
  22 #include "mesh.h"
  23
  24 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
  25                                                 const char *name,
  26                                                 enum nl80211_iftype type,
  27                                                 u32 *flags,
  28                                                 struct vif_params *params)
  29 {
  30         struct ieee80211_local *local = wiphy_priv(wiphy);
  31         struct wireless_dev *wdev;
  32         struct ieee80211_sub_if_data *sdata;
  33         int err;
  34
  35         err = ieee80211_if_add(local, name, &wdev, type, params);
  36         if (err)
  37                 return ERR_PTR(err);
  38
  39         if (type == NL80211_IFTYPE_MONITOR && flags) {
  40                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  41                 sdata->u.mntr_flags = *flags;
  42         }
  43
  44         return wdev;
  45 }
  46
  47 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  48 {
  49         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  50
  51         return 0;
  52 }
  53
  54 static int ieee80211_change_iface(struct wiphy *wiphy,
  55                                   struct net_device *dev,
  56                                   enum nl80211_iftype type, u32 *flags,
  57                                   struct vif_params *params)
  58 {
  59         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  60         int ret;
  61
  62         ret = ieee80211_if_change_type(sdata, type);
  63         if (ret)
  64                 return ret;
  65
  66         if (type == NL80211_IFTYPE_AP_VLAN &&
  67             params && params->use_4addr == 0)
  68                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  69         else if (type == NL80211_IFTYPE_STATION &&
  70                  params && params->use_4addr >= 0)
  71                 sdata->u.mgd.use_4addr = params->use_4addr;
  72
  73         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  74                 struct ieee80211_local *local = sdata->local;
  75
  76                 if (ieee80211_sdata_running(sdata)) {
  77                         u32 mask = MONITOR_FLAG_COOK_FRAMES |
  78                                    MONITOR_FLAG_ACTIVE;
  79
  80                         /*
  81                          * Prohibit MONITOR_FLAG_COOK_FRAMES and
  82                          * MONITOR_FLAG_ACTIVE to be changed while the
  83                          * interface is up.
  84                          * Else we would need to add a lot of cruft
  85                          * to update everything:
  86                          *      cooked_mntrs, monitor and all fif_* counters
  87                          *      reconfigure hardware
  88                          */
  89                         if ((*flags & mask) != (sdata->u.mntr_flags & mask))
  90                                 return -EBUSY;
  91
  92                         ieee80211_adjust_monitor_flags(sdata, -1);
  93                         sdata->u.mntr_flags = *flags;
  94                         ieee80211_adjust_monitor_flags(sdata, 1);
  95
  96                         ieee80211_configure_filter(local);
  97                 } else {
  98                         /*
  99                          * Because the interface is down, ieee80211_do_stop
 100                          * and ieee80211_do_open take care of "everything"
 101                          * mentioned in the comment above.
 102                          */
 103                         sdata->u.mntr_flags = *flags;
 104                 }
 105         }
 106
 107         return 0;
 108 }
 109
 110 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 111                                       struct wireless_dev *wdev)
 112 {
 113         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 114         int ret;
 115
 116         mutex_lock(&sdata->local->chanctx_mtx);
 117         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 118         mutex_unlock(&sdata->local->chanctx_mtx);
 119         if (ret < 0)
 120                 return ret;
 121
 122         return ieee80211_do_open(wdev, true);
 123 }
 124
 125 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 126                                       struct wireless_dev *wdev)
 127 {
 128         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 129 }
 130
 131 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 132                                   struct net_device *dev,
 133                                   u16 noack_map)
 134 {
 135         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 136
 137         sdata->noack_map = noack_map;
 138         return 0;
 139 }
 140
 141 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 142                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 143                              struct key_params *params)
 144 {
 145         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 146         struct ieee80211_local *local = sdata->local;
 147         struct sta_info *sta = NULL;
 148         const struct ieee80211_cipher_scheme *cs = NULL;
 149         struct ieee80211_key *key;
 150         int err;
 151
 152         if (!ieee80211_sdata_running(sdata))
 153                 return -ENETDOWN;
 154
 155         /* reject WEP and TKIP keys if WEP failed to initialize */
 156         switch (params->cipher) {
 157         case WLAN_CIPHER_SUITE_WEP40:
 158         case WLAN_CIPHER_SUITE_TKIP:
 159         case WLAN_CIPHER_SUITE_WEP104:
 160                 if (IS_ERR(local->wep_tx_tfm))
 161                         return -EINVAL;
 162                 break;
 163         case WLAN_CIPHER_SUITE_CCMP:
 164         case WLAN_CIPHER_SUITE_AES_CMAC:
 165         case WLAN_CIPHER_SUITE_GCMP:
 166                 break;
 167         default:
 168                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 169                 break;
 170         }
 171
 172         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 173                                   params->key, params->seq_len, params->seq,
 174                                   cs);
 175         if (IS_ERR(key))
 176                 return PTR_ERR(key);
 177
 178         if (pairwise)
 179                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 180
 181         mutex_lock(&local->sta_mtx);
 182
 183         if (mac_addr) {
 184                 if (ieee80211_vif_is_mesh(&sdata->vif))
 185                         sta = sta_info_get(sdata, mac_addr);
 186                 else
 187                         sta = sta_info_get_bss(sdata, mac_addr);
 188                 /*
 189                  * The ASSOC test makes sure the driver is ready to
 190                  * receive the key. When wpa_supplicant has roamed
 191                  * using FT, it attempts to set the key before
 192                  * association has completed, this rejects that attempt
 193                  * so it will set the key again after assocation.
 194                  *
 195                  * TODO: accept the key if we have a station entry and
 196                  *       add it to the device after the station.
 197                  */
 198                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 199                         ieee80211_key_free_unused(key);
 200                         err = -ENOENT;
 201                         goto out_unlock;
 202                 }
 203         }
 204
 205         switch (sdata->vif.type) {
 206         case NL80211_IFTYPE_STATION:
 207                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 208                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 209                 break;
 210         case NL80211_IFTYPE_AP:
 211         case NL80211_IFTYPE_AP_VLAN:
 212                 /* Keys without a station are used for TX only */
 213                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 214                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 215                 break;
 216         case NL80211_IFTYPE_ADHOC:
 217                 /* no MFP (yet) */
 218                 break;
 219         case NL80211_IFTYPE_MESH_POINT:
 220 #ifdef CONFIG_MAC80211_MESH
 221                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 222                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 223                 break;
 224 #endif
 225         case NL80211_IFTYPE_WDS:
 226         case NL80211_IFTYPE_MONITOR:
 227         case NL80211_IFTYPE_P2P_DEVICE:
 228         case NL80211_IFTYPE_UNSPECIFIED:
 229         case NUM_NL80211_IFTYPES:
 230         case NL80211_IFTYPE_P2P_CLIENT:
 231         case NL80211_IFTYPE_P2P_GO:
 232                 /* shouldn't happen */
 233                 WARN_ON_ONCE(1);
 234                 break;
 235         }
 236
 237         if (sta)
 238                 sta->cipher_scheme = cs;
 239
 240         err = ieee80211_key_link(key, sdata, sta);
 241
 242  out_unlock:
 243         mutex_unlock(&local->sta_mtx);
 244
 245         return err;
 246 }
 247
 248 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 249                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 250 {
 251         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 252         struct ieee80211_local *local = sdata->local;
 253         struct sta_info *sta;
 254         struct ieee80211_key *key = NULL;
 255         int ret;
 256
 257         mutex_lock(&local->sta_mtx);
 258         mutex_lock(&local->key_mtx);
 259
 260         if (mac_addr) {
 261                 ret = -ENOENT;
 262
 263                 sta = sta_info_get_bss(sdata, mac_addr);
 264                 if (!sta)
 265                         goto out_unlock;
 266
 267                 if (pairwise)
 268                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 269                 else
 270                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 271         } else
 272                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 273
 274         if (!key) {
 275                 ret = -ENOENT;
 276                 goto out_unlock;
 277         }
 278
 279         ieee80211_key_free(key, true);
 280
 281         ret = 0;
 282  out_unlock:
 283         mutex_unlock(&local->key_mtx);
 284         mutex_unlock(&local->sta_mtx);
 285
 286         return ret;
 287 }
 288
 289 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 290                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 291                              void *cookie,
 292                              void (*callback)(void *cookie,
 293                                               struct key_params *params))
 294 {
 295         struct ieee80211_sub_if_data *sdata;
 296         struct sta_info *sta = NULL;
 297         u8 seq[6] = {0};
 298         struct key_params params;
 299         struct ieee80211_key *key = NULL;
 300         u64 pn64;
 301         u32 iv32;
 302         u16 iv16;
 303         int err = -ENOENT;
 304
 305         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 306
 307         rcu_read_lock();
 308
 309         if (mac_addr) {
 310                 sta = sta_info_get_bss(sdata, mac_addr);
 311                 if (!sta)
 312                         goto out;
 313
 314                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 315                         key = rcu_dereference(sta->ptk[key_idx]);
 316                 else if (!pairwise &&
 317                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 318                         key = rcu_dereference(sta->gtk[key_idx]);
 319         } else
 320                 key = rcu_dereference(sdata->keys[key_idx]);
 321
 322         if (!key)
 323                 goto out;
 324
 325         memset(&params, 0, sizeof(params));
 326
 327         params.cipher = key->conf.cipher;
 328
 329         switch (key->conf.cipher) {
 330         case WLAN_CIPHER_SUITE_TKIP:
 331                 iv32 = key->u.tkip.tx.iv32;
 332                 iv16 = key->u.tkip.tx.iv16;
 333
 334                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 335                         drv_get_tkip_seq(sdata->local,
 336                                          key->conf.hw_key_idx,
 337                                          &iv32, &iv16);
 338
 339                 seq[0] = iv16 & 0xff;
 340                 seq[1] = (iv16 >> 8) & 0xff;
 341                 seq[2] = iv32 & 0xff;
 342                 seq[3] = (iv32 >> 8) & 0xff;
 343                 seq[4] = (iv32 >> 16) & 0xff;
 344                 seq[5] = (iv32 >> 24) & 0xff;
 345                 params.seq = seq;
 346                 params.seq_len = 6;
 347                 break;
 348         case WLAN_CIPHER_SUITE_CCMP:
 349                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 350                 seq[0] = pn64;
 351                 seq[1] = pn64 >> 8;
 352                 seq[2] = pn64 >> 16;
 353                 seq[3] = pn64 >> 24;
 354                 seq[4] = pn64 >> 32;
 355                 seq[5] = pn64 >> 40;
 356                 params.seq = seq;
 357                 params.seq_len = 6;
 358                 break;
 359         case WLAN_CIPHER_SUITE_AES_CMAC:
 360                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 361                 seq[0] = pn64;
 362                 seq[1] = pn64 >> 8;
 363                 seq[2] = pn64 >> 16;
 364                 seq[3] = pn64 >> 24;
 365                 seq[4] = pn64 >> 32;
 366                 seq[5] = pn64 >> 40;
 367                 params.seq = seq;
 368                 params.seq_len = 6;
 369                 break;
 370         }
 371
 372         params.key = key->conf.key;
 373         params.key_len = key->conf.keylen;
 374
 375         callback(cookie, &params);
 376         err = 0;
 377
 378  out:
 379         rcu_read_unlock();
 380         return err;
 381 }
 382
 383 static int ieee80211_config_default_key(struct wiphy *wiphy,
 384                                         struct net_device *dev,
 385                                         u8 key_idx, bool uni,
 386                                         bool multi)
 387 {
 388         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 389
 390         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 391
 392         return 0;
 393 }
 394
 395 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 396                                              struct net_device *dev,
 397                                              u8 key_idx)
 398 {
 399         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 400
 401         ieee80211_set_default_mgmt_key(sdata, key_idx);
 402
 403         return 0;
 404 }
 405
 406 void sta_set_rate_info_tx(struct sta_info *sta,
 407                           const struct ieee80211_tx_rate *rate,
 408                           struct rate_info *rinfo)
 409 {
 410         rinfo->flags = 0;
 411         if (rate->flags & IEEE80211_TX_RC_MCS) {
 412                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 413                 rinfo->mcs = rate->idx;
 414         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 415                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 416                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 417                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 418         } else {
 419                 struct ieee80211_supported_band *sband;
 420                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 421                 u16 brate;
 422
 423                 sband = sta->local->hw.wiphy->bands[
 424                                 ieee80211_get_sdata_band(sta->sdata)];
 425                 brate = sband->bitrates[rate->idx].bitrate;
 426                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 427         }
 428         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 429                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 430         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 431                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 432         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 433                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 434         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 435                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 436 }
 437
 438 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 439 {
 440         rinfo->flags = 0;
 441
 442         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 443                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 444                 rinfo->mcs = sta->last_rx_rate_idx;
 445         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 446                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 447                 rinfo->nss = sta->last_rx_rate_vht_nss;
 448                 rinfo->mcs = sta->last_rx_rate_idx;
 449         } else {
 450                 struct ieee80211_supported_band *sband;
 451                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 452                 u16 brate;
 453
 454                 sband = sta->local->hw.wiphy->bands[
 455                                 ieee80211_get_sdata_band(sta->sdata)];
 456                 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
 457                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 458         }
 459
 460         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 461                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 462         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 463                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 464         if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
 465                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 466         if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80P80MHZ)
 467                 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
 468         if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
 469                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 470 }
 471
 472 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 473                                   int idx, u8 *mac, struct station_info *sinfo)
 474 {
 475         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 476         struct ieee80211_local *local = sdata->local;
 477         struct sta_info *sta;
 478         int ret = -ENOENT;
 479
 480         mutex_lock(&local->sta_mtx);
 481
 482         sta = sta_info_get_by_idx(sdata, idx);
 483         if (sta) {
 484                 ret = 0;
 485                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 486                 sta_set_sinfo(sta, sinfo);
 487         }
 488
 489         mutex_unlock(&local->sta_mtx);
 490
 491         return ret;
 492 }
 493
 494 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 495                                  int idx, struct survey_info *survey)
 496 {
 497         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 498
 499         return drv_get_survey(local, idx, survey);
 500 }
 501
 502 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 503                                  const u8 *mac, struct station_info *sinfo)
 504 {
 505         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 506         struct ieee80211_local *local = sdata->local;
 507         struct sta_info *sta;
 508         int ret = -ENOENT;
 509
 510         mutex_lock(&local->sta_mtx);
 511
 512         sta = sta_info_get_bss(sdata, mac);
 513         if (sta) {
 514                 ret = 0;
 515                 sta_set_sinfo(sta, sinfo);
 516         }
 517
 518         mutex_unlock(&local->sta_mtx);
 519
 520         return ret;
 521 }
 522
 523 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 524                                          struct cfg80211_chan_def *chandef)
 525 {
 526         struct ieee80211_local *local = wiphy_priv(wiphy);
 527         struct ieee80211_sub_if_data *sdata;
 528         int ret = 0;
 529
 530         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 531                 return 0;
 532
 533         mutex_lock(&local->mtx);
 534         mutex_lock(&local->iflist_mtx);
 535         if (local->use_chanctx) {
 536                 sdata = rcu_dereference_protected(
 537                                 local->monitor_sdata,
 538                                 lockdep_is_held(&local->iflist_mtx));
 539                 if (sdata) {
 540                         ieee80211_vif_release_channel(sdata);
 541                         ret = ieee80211_vif_use_channel(sdata, chandef,
 542                                         IEEE80211_CHANCTX_EXCLUSIVE);
 543                 }
 544         } else if (local->open_count == local->monitors) {
 545                 local->_oper_chandef = *chandef;
 546                 ieee80211_hw_config(local, 0);
 547         }
 548
 549         if (ret == 0)
 550                 local->monitor_chandef = *chandef;
 551         mutex_unlock(&local->iflist_mtx);
 552         mutex_unlock(&local->mtx);
 553
 554         return ret;
 555 }
 556
 557 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 558                                     const u8 *resp, size_t resp_len,
 559                                     const struct ieee80211_csa_settings *csa)
 560 {
 561         struct probe_resp *new, *old;
 562
 563         if (!resp || !resp_len)
 564                 return 1;
 565
 566         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 567
 568         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 569         if (!new)
 570                 return -ENOMEM;
 571
 572         new->len = resp_len;
 573         memcpy(new->data, resp, resp_len);
 574
 575         if (csa)
 576                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 577                        csa->n_counter_offsets_presp *
 578                        sizeof(new->csa_counter_offsets[0]));
 579
 580         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 581         if (old)
 582                 kfree_rcu(old, rcu_head);
 583
 584         return 0;
 585 }
 586
 587 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 588                                    struct cfg80211_beacon_data *params,
 589                                    const struct ieee80211_csa_settings *csa)
 590 {
 591         struct beacon_data *new, *old;
 592         int new_head_len, new_tail_len;
 593         int size, err;
 594         u32 changed = BSS_CHANGED_BEACON;
 595
 596         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 597
 598
 599         /* Need to have a beacon head if we don't have one yet */
 600         if (!params->head && !old)
 601                 return -EINVAL;
 602
 603         /* new or old head? */
 604         if (params->head)
 605                 new_head_len = params->head_len;
 606         else
 607                 new_head_len = old->head_len;
 608
 609         /* new or old tail? */
 610         if (params->tail || !old)
 611                 /* params->tail_len will be zero for !params->tail */
 612                 new_tail_len = params->tail_len;
 613         else
 614                 new_tail_len = old->tail_len;
 615
 616         size = sizeof(*new) + new_head_len + new_tail_len;
 617
 618         new = kzalloc(size, GFP_KERNEL);
 619         if (!new)
 620                 return -ENOMEM;
 621
 622         /* start filling the new info now */
 623
 624         /*
 625          * pointers go into the block we allocated,
 626          * memory is | beacon_data | head | tail |
 627          */
 628         new->head = ((u8 *) new) + sizeof(*new);
 629         new->tail = new->head + new_head_len;
 630         new->head_len = new_head_len;
 631         new->tail_len = new_tail_len;
 632
 633         if (csa) {
 634                 new->csa_current_counter = csa->count;
 635                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 636                        csa->n_counter_offsets_beacon *
 637                        sizeof(new->csa_counter_offsets[0]));
 638         }
 639
 640         /* copy in head */
 641         if (params->head)
 642                 memcpy(new->head, params->head, new_head_len);
 643         else
 644                 memcpy(new->head, old->head, new_head_len);
 645
 646         /* copy in optional tail */
 647         if (params->tail)
 648                 memcpy(new->tail, params->tail, new_tail_len);
 649         else
 650                 if (old)
 651                         memcpy(new->tail, old->tail, new_tail_len);
 652
 653         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 654                                        params->probe_resp_len, csa);
 655         if (err < 0)
 656                 return err;
 657         if (err == 0)
 658                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 659
 660         rcu_assign_pointer(sdata->u.ap.beacon, new);
 661
 662         if (old)
 663                 kfree_rcu(old, rcu_head);
 664
 665         return changed;
 666 }
 667
 668 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 669                               struct cfg80211_ap_settings *params)
 670 {
 671         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 672         struct ieee80211_local *local = sdata->local;
 673         struct beacon_data *old;
 674         struct ieee80211_sub_if_data *vlan;
 675         u32 changed = BSS_CHANGED_BEACON_INT |
 676                       BSS_CHANGED_BEACON_ENABLED |
 677                       BSS_CHANGED_BEACON |
 678                       BSS_CHANGED_SSID |
 679                       BSS_CHANGED_P2P_PS;
 680         int err;
 681
 682         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 683         if (old)
 684                 return -EALREADY;
 685
 686         switch (params->smps_mode) {
 687         case NL80211_SMPS_OFF:
 688                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 689                 break;
 690         case NL80211_SMPS_STATIC:
 691                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 692                 break;
 693         case NL80211_SMPS_DYNAMIC:
 694                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 695                 break;
 696         default:
 697                 return -EINVAL;
 698         }
 699         sdata->needed_rx_chains = sdata->local->rx_chains;
 700
 701         mutex_lock(&local->mtx);
 702         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 703                                         IEEE80211_CHANCTX_SHARED);
 704         if (!err)
 705                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 706         mutex_unlock(&local->mtx);
 707         if (err)
 708                 return err;
 709
 710         /*
 711          * Apply control port protocol, this allows us to
 712          * not encrypt dynamic WEP control frames.
 713          */
 714         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 715         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 716         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 717                                                         &params->crypto,
 718                                                         sdata->vif.type);
 719
 720         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 721                 vlan->control_port_protocol =
 722                         params->crypto.control_port_ethertype;
 723                 vlan->control_port_no_encrypt =
 724                         params->crypto.control_port_no_encrypt;
 725                 vlan->encrypt_headroom =
 726                         ieee80211_cs_headroom(sdata->local,
 727                                               &params->crypto,
 728                                               vlan->vif.type);
 729         }
 730
 731         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 732         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 733         sdata->vif.bss_conf.enable_beacon = true;
 734
 735         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 736         if (params->ssid_len)
 737                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 738                        params->ssid_len);
 739         sdata->vif.bss_conf.hidden_ssid =
 740                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 741
 742         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 743                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 744         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 745                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 746         if (params->p2p_opp_ps)
 747                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 748                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 749
 750         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 751         if (err < 0) {
 752                 ieee80211_vif_release_channel(sdata);
 753                 return err;
 754         }
 755         changed |= err;
 756
 757         err = drv_start_ap(sdata->local, sdata);
 758         if (err) {
 759                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 760
 761                 if (old)
 762                         kfree_rcu(old, rcu_head);
 763                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 764                 ieee80211_vif_release_channel(sdata);
 765                 return err;
 766         }
 767
 768         ieee80211_recalc_dtim(local, sdata);
 769         ieee80211_bss_info_change_notify(sdata, changed);
 770
 771         netif_carrier_on(dev);
 772         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 773                 netif_carrier_on(vlan->dev);
 774
 775         return 0;
 776 }
 777
 778 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 779                                    struct cfg80211_beacon_data *params)
 780 {
 781         struct ieee80211_sub_if_data *sdata;
 782         struct beacon_data *old;
 783         int err;
 784
 785         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 786         sdata_assert_lock(sdata);
 787
 788         /* don't allow changing the beacon while CSA is in place - offset
 789          * of channel switch counter may change
 790          */
 791         if (sdata->vif.csa_active)
 792                 return -EBUSY;
 793
 794         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 795         if (!old)
 796                 return -ENOENT;
 797
 798         err = ieee80211_assign_beacon(sdata, params, NULL);
 799         if (err < 0)
 800                 return err;
 801         ieee80211_bss_info_change_notify(sdata, err);
 802         return 0;
 803 }
 804
 805 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 806 {
 807         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 808         struct ieee80211_sub_if_data *vlan;
 809         struct ieee80211_local *local = sdata->local;
 810         struct beacon_data *old_beacon;
 811         struct probe_resp *old_probe_resp;
 812         struct cfg80211_chan_def chandef;
 813
 814         sdata_assert_lock(sdata);
 815
 816         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
 817         if (!old_beacon)
 818                 return -ENOENT;
 819         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 820
 821         /* abort any running channel switch */
 822         mutex_lock(&local->mtx);
 823         sdata->vif.csa_active = false;
 824         if (sdata->csa_block_tx) {
 825                 ieee80211_wake_vif_queues(local, sdata,
 826                                           IEEE80211_QUEUE_STOP_REASON_CSA);
 827                 sdata->csa_block_tx = false;
 828         }
 829
 830         mutex_unlock(&local->mtx);
 831
 832         kfree(sdata->u.ap.next_beacon);
 833         sdata->u.ap.next_beacon = NULL;
 834
 835         /* turn off carrier for this interface and dependent VLANs */
 836         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 837                 netif_carrier_off(vlan->dev);
 838         netif_carrier_off(dev);
 839
 840         /* remove beacon and probe response */
 841         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 842         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
 843         kfree_rcu(old_beacon, rcu_head);
 844         if (old_probe_resp)
 845                 kfree_rcu(old_probe_resp, rcu_head);
 846         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
 847
 848         __sta_info_flush(sdata, true);
 849         ieee80211_free_keys(sdata, true);
 850
 851         sdata->vif.bss_conf.enable_beacon = false;
 852         sdata->vif.bss_conf.ssid_len = 0;
 853         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
 854         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 855
 856         if (sdata->wdev.cac_started) {
 857                 chandef = sdata->vif.bss_conf.chandef;
 858                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
 859                 cfg80211_cac_event(sdata->dev, &chandef,
 860                                    NL80211_RADAR_CAC_ABORTED,
 861                                    GFP_KERNEL);
 862         }
 863
 864         drv_stop_ap(sdata->local, sdata);
 865
 866         /* free all potentially still buffered bcast frames */
 867         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
 868         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
 869
 870         mutex_lock(&local->mtx);
 871         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
 872         ieee80211_vif_release_channel(sdata);
 873         mutex_unlock(&local->mtx);
 874
 875         return 0;
 876 }
 877
 878 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 879 struct iapp_layer2_update {
 880         u8 da[ETH_ALEN];        /* broadcast */
 881         u8 sa[ETH_ALEN];        /* STA addr */
 882         __be16 len;             /* 6 */
 883         u8 dsap;                /* 0 */
 884         u8 ssap;                /* 0 */
 885         u8 control;
 886         u8 xid_info[3];
 887 } __packed;
 888
 889 static void ieee80211_send_layer2_update(struct sta_info *sta)
 890 {
 891         struct iapp_layer2_update *msg;
 892         struct sk_buff *skb;
 893
 894         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 895          * bridge devices */
 896
 897         skb = dev_alloc_skb(sizeof(*msg));
 898         if (!skb)
 899                 return;
 900         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 901
 902         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 903          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 904
 905         eth_broadcast_addr(msg->da);
 906         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 907         msg->len = htons(6);
 908         msg->dsap = 0;
 909         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 910         msg->control = 0xaf;    /* XID response lsb.1111F101.
 911                                  * F=0 (no poll command; unsolicited frame) */
 912         msg->xid_info[0] = 0x81;        /* XID format identifier */
 913         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 914         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 915
 916         skb->dev = sta->sdata->dev;
 917         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 918         memset(skb->cb, 0, sizeof(skb->cb));
 919         netif_rx_ni(skb);
 920 }
 921
 922 static int sta_apply_auth_flags(struct ieee80211_local *local,
 923                                 struct sta_info *sta,
 924                                 u32 mask, u32 set)
 925 {
 926         int ret;
 927
 928         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 929             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 930             !test_sta_flag(sta, WLAN_STA_AUTH)) {
 931                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 932                 if (ret)
 933                         return ret;
 934         }
 935
 936         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 937             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 938             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 939                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 940                 if (ret)
 941                         return ret;
 942         }
 943
 944         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 945                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 946                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
 947                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 948                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 949                 else
 950                         ret = 0;
 951                 if (ret)
 952                         return ret;
 953         }
 954
 955         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 956             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
 957             test_sta_flag(sta, WLAN_STA_ASSOC)) {
 958                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 959                 if (ret)
 960                         return ret;
 961         }
 962
 963         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 964             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
 965             test_sta_flag(sta, WLAN_STA_AUTH)) {
 966                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
 967                 if (ret)
 968                         return ret;
 969         }
 970
 971         return 0;
 972 }
 973
 974 static int sta_apply_parameters(struct ieee80211_local *local,
 975                                 struct sta_info *sta,
 976                                 struct station_parameters *params)
 977 {
 978         int ret = 0;
 979         struct ieee80211_supported_band *sband;
 980         struct ieee80211_sub_if_data *sdata = sta->sdata;
 981         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
 982         u32 mask, set;
 983
 984         sband = local->hw.wiphy->bands[band];
 985
 986         mask = params->sta_flags_mask;
 987         set = params->sta_flags_set;
 988
 989         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 990                 /*
 991                  * In mesh mode, ASSOCIATED isn't part of the nl80211
 992                  * API but must follow AUTHENTICATED for driver state.
 993                  */
 994                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
 995                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
 996                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
 997                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
 998         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
 999                 /*
1000                  * TDLS -- everything follows authorized, but
1001                  * only becoming authorized is possible, not
1002                  * going back
1003                  */
1004                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1005                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1006                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1007                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1008                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1009                 }
1010         }
1011
1012         /* auth flags will be set later for TDLS stations */
1013         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1014                 ret = sta_apply_auth_flags(local, sta, mask, set);
1015                 if (ret)
1016                         return ret;
1017         }
1018
1019         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1020                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1021                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1022                 else
1023                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1024         }
1025
1026         if (mask & BIT(NL80211_STA_FLAG_WME))
1027                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1028
1029         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1030                 if (set & BIT(NL80211_STA_FLAG_MFP))
1031                         set_sta_flag(sta, WLAN_STA_MFP);
1032                 else
1033                         clear_sta_flag(sta, WLAN_STA_MFP);
1034         }
1035
1036         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1037                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1038                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1039                 else
1040                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1041         }
1042
1043         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1044                 sta->sta.uapsd_queues = params->uapsd_queues;
1045                 sta->sta.max_sp = params->max_sp;
1046         }
1047
1048         /*
1049          * cfg80211 validates this (1-2007) and allows setting the AID
1050          * only when creating a new station entry
1051          */
1052         if (params->aid)
1053                 sta->sta.aid = params->aid;
1054
1055         /*
1056          * Some of the following updates would be racy if called on an
1057          * existing station, via ieee80211_change_station(). However,
1058          * all such changes are rejected by cfg80211 except for updates
1059          * changing the supported rates on an existing but not yet used
1060          * TDLS peer.
1061          */
1062
1063         if (params->listen_interval >= 0)
1064                 sta->listen_interval = params->listen_interval;
1065
1066         if (params->supported_rates) {
1067                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1068                                          sband, params->supported_rates,
1069                                          params->supported_rates_len,
1070                                          &sta->sta.supp_rates[band]);
1071         }
1072
1073         if (params->ht_capa)
1074                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1075                                                   params->ht_capa, sta);
1076
1077         if (params->vht_capa)
1078                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1079                                                     params->vht_capa, sta);
1080
1081         if (params->opmode_notif_used) {
1082                 /* returned value is only needed for rc update, but the
1083                  * rc isn't initialized here yet, so ignore it
1084                  */
1085                 __ieee80211_vht_handle_opmode(sdata, sta,
1086                                               params->opmode_notif,
1087                                               band, false);
1088         }
1089
1090         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1091 #ifdef CONFIG_MAC80211_MESH
1092                 u32 changed = 0;
1093
1094                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1095                         switch (params->plink_state) {
1096                         case NL80211_PLINK_ESTAB:
1097                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1098                                         changed = mesh_plink_inc_estab_count(
1099                                                         sdata);
1100                                 sta->plink_state = params->plink_state;
1101
1102                                 ieee80211_mps_sta_status_update(sta);
1103                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1104                                               sdata->u.mesh.mshcfg.power_mode);
1105                                 break;
1106                         case NL80211_PLINK_LISTEN:
1107                         case NL80211_PLINK_BLOCKED:
1108                         case NL80211_PLINK_OPN_SNT:
1109                         case NL80211_PLINK_OPN_RCVD:
1110                         case NL80211_PLINK_CNF_RCVD:
1111                         case NL80211_PLINK_HOLDING:
1112                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1113                                         changed = mesh_plink_dec_estab_count(
1114                                                         sdata);
1115                                 sta->plink_state = params->plink_state;
1116
1117                                 ieee80211_mps_sta_status_update(sta);
1118                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1119                                                 NL80211_MESH_POWER_UNKNOWN);
1120                                 break;
1121                         default:
1122                                 /*  nothing  */
1123                                 break;
1124                         }
1125                 }
1126
1127                 switch (params->plink_action) {
1128                 case NL80211_PLINK_ACTION_NO_ACTION:
1129                         /* nothing */
1130                         break;
1131                 case NL80211_PLINK_ACTION_OPEN:
1132                         changed |= mesh_plink_open(sta);
1133                         break;
1134                 case NL80211_PLINK_ACTION_BLOCK:
1135                         changed |= mesh_plink_block(sta);
1136                         break;
1137                 }
1138
1139                 if (params->local_pm)
1140                         changed |=
1141                               ieee80211_mps_set_sta_local_pm(sta,
1142                                                              params->local_pm);
1143                 ieee80211_mbss_info_change_notify(sdata, changed);
1144 #endif
1145         }
1146
1147         /* set the STA state after all sta info from usermode has been set */
1148         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1149                 ret = sta_apply_auth_flags(local, sta, mask, set);
1150                 if (ret)
1151                         return ret;
1152         }
1153
1154         return 0;
1155 }
1156
1157 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1158                                  const u8 *mac,
1159                                  struct station_parameters *params)
1160 {
1161         struct ieee80211_local *local = wiphy_priv(wiphy);
1162         struct sta_info *sta;
1163         struct ieee80211_sub_if_data *sdata;
1164         int err;
1165         int layer2_update;
1166
1167         if (params->vlan) {
1168                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1169
1170                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1171                     sdata->vif.type != NL80211_IFTYPE_AP)
1172                         return -EINVAL;
1173         } else
1174                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1175
1176         if (ether_addr_equal(mac, sdata->vif.addr))
1177                 return -EINVAL;
1178
1179         if (is_multicast_ether_addr(mac))
1180                 return -EINVAL;
1181
1182         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1183         if (!sta)
1184                 return -ENOMEM;
1185
1186         /*
1187          * defaults -- if userspace wants something else we'll
1188          * change it accordingly in sta_apply_parameters()
1189          */
1190         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1191                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1192                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1193         } else {
1194                 sta->sta.tdls = true;
1195         }
1196
1197         err = sta_apply_parameters(local, sta, params);
1198         if (err) {
1199                 sta_info_free(local, sta);
1200                 return err;
1201         }
1202
1203         /*
1204          * for TDLS, rate control should be initialized only when
1205          * rates are known and station is marked authorized
1206          */
1207         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1208                 rate_control_rate_init(sta);
1209
1210         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1211                 sdata->vif.type == NL80211_IFTYPE_AP;
1212
1213         err = sta_info_insert_rcu(sta);
1214         if (err) {
1215                 rcu_read_unlock();
1216                 return err;
1217         }
1218
1219         if (layer2_update)
1220                 ieee80211_send_layer2_update(sta);
1221
1222         rcu_read_unlock();
1223
1224         return 0;
1225 }
1226
1227 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1228                                  const u8 *mac)
1229 {
1230         struct ieee80211_sub_if_data *sdata;
1231
1232         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1233
1234         if (mac)
1235                 return sta_info_destroy_addr_bss(sdata, mac);
1236
1237         sta_info_flush(sdata);
1238         return 0;
1239 }
1240
1241 static int ieee80211_change_station(struct wiphy *wiphy,
1242                                     struct net_device *dev, const u8 *mac,
1243                                     struct station_parameters *params)
1244 {
1245         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1246         struct ieee80211_local *local = wiphy_priv(wiphy);
1247         struct sta_info *sta;
1248         struct ieee80211_sub_if_data *vlansdata;
1249         enum cfg80211_station_type statype;
1250         int err;
1251
1252         mutex_lock(&local->sta_mtx);
1253
1254         sta = sta_info_get_bss(sdata, mac);
1255         if (!sta) {
1256                 err = -ENOENT;
1257                 goto out_err;
1258         }
1259
1260         switch (sdata->vif.type) {
1261         case NL80211_IFTYPE_MESH_POINT:
1262                 if (sdata->u.mesh.user_mpm)
1263                         statype = CFG80211_STA_MESH_PEER_USER;
1264                 else
1265                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1266                 break;
1267         case NL80211_IFTYPE_ADHOC:
1268                 statype = CFG80211_STA_IBSS;
1269                 break;
1270         case NL80211_IFTYPE_STATION:
1271                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1272                         statype = CFG80211_STA_AP_STA;
1273                         break;
1274                 }
1275                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1276                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1277                 else
1278                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1279                 break;
1280         case NL80211_IFTYPE_AP:
1281         case NL80211_IFTYPE_AP_VLAN:
1282                 statype = CFG80211_STA_AP_CLIENT;
1283                 break;
1284         default:
1285                 err = -EOPNOTSUPP;
1286                 goto out_err;
1287         }
1288
1289         err = cfg80211_check_station_change(wiphy, params, statype);
1290         if (err)
1291                 goto out_err;
1292
1293         if (params->vlan && params->vlan != sta->sdata->dev) {
1294                 bool prev_4addr = false;
1295                 bool new_4addr = false;
1296
1297                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1298
1299                 if (params->vlan->ieee80211_ptr->use_4addr) {
1300                         if (vlansdata->u.vlan.sta) {
1301                                 err = -EBUSY;
1302                                 goto out_err;
1303                         }
1304
1305                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1306                         new_4addr = true;
1307                 }
1308
1309                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1310                     sta->sdata->u.vlan.sta) {
1311                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1312                         prev_4addr = true;
1313                 }
1314
1315                 sta->sdata = vlansdata;
1316
1317                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1318                     prev_4addr != new_4addr) {
1319                         if (new_4addr)
1320                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1321                         else
1322                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1323                 }
1324
1325                 ieee80211_send_layer2_update(sta);
1326         }
1327
1328         err = sta_apply_parameters(local, sta, params);
1329         if (err)
1330                 goto out_err;
1331
1332         /* When peer becomes authorized, init rate control as well */
1333         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1334             test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1335                 rate_control_rate_init(sta);
1336
1337         mutex_unlock(&local->sta_mtx);
1338
1339         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1340              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1341             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1342             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1343             sta_info_tx_streams(sta) != 1) {
1344                 ht_dbg(sta->sdata,
1345                        "%pM just authorized and MIMO capable - update SMPS\n",
1346                        sta->sta.addr);
1347                 ieee80211_send_smps_action(sta->sdata,
1348                         sta->sdata->bss->req_smps,
1349                         sta->sta.addr,
1350                         sta->sdata->vif.bss_conf.bssid);
1351         }
1352
1353         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1354             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1355                 ieee80211_recalc_ps(local, -1);
1356                 ieee80211_recalc_ps_vif(sdata);
1357         }
1358
1359         return 0;
1360 out_err:
1361         mutex_unlock(&local->sta_mtx);
1362         return err;
1363 }
1364
1365 #ifdef CONFIG_MAC80211_MESH
1366 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1367                                const u8 *dst, const u8 *next_hop)
1368 {
1369         struct ieee80211_sub_if_data *sdata;
1370         struct mesh_path *mpath;
1371         struct sta_info *sta;
1372
1373         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1374
1375         rcu_read_lock();
1376         sta = sta_info_get(sdata, next_hop);
1377         if (!sta) {
1378                 rcu_read_unlock();
1379                 return -ENOENT;
1380         }
1381
1382         mpath = mesh_path_add(sdata, dst);
1383         if (IS_ERR(mpath)) {
1384                 rcu_read_unlock();
1385                 return PTR_ERR(mpath);
1386         }
1387
1388         mesh_path_fix_nexthop(mpath, sta);
1389
1390         rcu_read_unlock();
1391         return 0;
1392 }
1393
1394 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1395                                const u8 *dst)
1396 {
1397         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1398
1399         if (dst)
1400                 return mesh_path_del(sdata, dst);
1401
1402         mesh_path_flush_by_iface(sdata);
1403         return 0;
1404 }
1405
1406 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1407                                   const u8 *dst, const u8 *next_hop)
1408 {
1409         struct ieee80211_sub_if_data *sdata;
1410         struct mesh_path *mpath;
1411         struct sta_info *sta;
1412
1413         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1414
1415         rcu_read_lock();
1416
1417         sta = sta_info_get(sdata, next_hop);
1418         if (!sta) {
1419                 rcu_read_unlock();
1420                 return -ENOENT;
1421         }
1422
1423         mpath = mesh_path_lookup(sdata, dst);
1424         if (!mpath) {
1425                 rcu_read_unlock();
1426                 return -ENOENT;
1427         }
1428
1429         mesh_path_fix_nexthop(mpath, sta);
1430
1431         rcu_read_unlock();
1432         return 0;
1433 }
1434
1435 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1436                             struct mpath_info *pinfo)
1437 {
1438         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1439
1440         if (next_hop_sta)
1441                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1442         else
1443                 memset(next_hop, 0, ETH_ALEN);
1444
1445         memset(pinfo, 0, sizeof(*pinfo));
1446
1447         pinfo->generation = mesh_paths_generation;
1448
1449         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1450                         MPATH_INFO_SN |
1451                         MPATH_INFO_METRIC |
1452                         MPATH_INFO_EXPTIME |
1453                         MPATH_INFO_DISCOVERY_TIMEOUT |
1454                         MPATH_INFO_DISCOVERY_RETRIES |
1455                         MPATH_INFO_FLAGS;
1456
1457         pinfo->frame_qlen = mpath->frame_queue.qlen;
1458         pinfo->sn = mpath->sn;
1459         pinfo->metric = mpath->metric;
1460         if (time_before(jiffies, mpath->exp_time))
1461                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1462         pinfo->discovery_timeout =
1463                         jiffies_to_msecs(mpath->discovery_timeout);
1464         pinfo->discovery_retries = mpath->discovery_retries;
1465         if (mpath->flags & MESH_PATH_ACTIVE)
1466                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1467         if (mpath->flags & MESH_PATH_RESOLVING)
1468                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1469         if (mpath->flags & MESH_PATH_SN_VALID)
1470                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1471         if (mpath->flags & MESH_PATH_FIXED)
1472                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1473         if (mpath->flags & MESH_PATH_RESOLVED)
1474                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1475 }
1476
1477 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1478                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1479
1480 {
1481         struct ieee80211_sub_if_data *sdata;
1482         struct mesh_path *mpath;
1483
1484         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1485
1486         rcu_read_lock();
1487         mpath = mesh_path_lookup(sdata, dst);
1488         if (!mpath) {
1489                 rcu_read_unlock();
1490                 return -ENOENT;
1491         }
1492         memcpy(dst, mpath->dst, ETH_ALEN);
1493         mpath_set_pinfo(mpath, next_hop, pinfo);
1494         rcu_read_unlock();
1495         return 0;
1496 }
1497
1498 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1499                                 int idx, u8 *dst, u8 *next_hop,
1500                                 struct mpath_info *pinfo)
1501 {
1502         struct ieee80211_sub_if_data *sdata;
1503         struct mesh_path *mpath;
1504
1505         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1506
1507         rcu_read_lock();
1508         mpath = mesh_path_lookup_by_idx(sdata, idx);
1509         if (!mpath) {
1510                 rcu_read_unlock();
1511                 return -ENOENT;
1512         }
1513         memcpy(dst, mpath->dst, ETH_ALEN);
1514         mpath_set_pinfo(mpath, next_hop, pinfo);
1515         rcu_read_unlock();
1516         return 0;
1517 }
1518
1519 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1520                                 struct net_device *dev,
1521                                 struct mesh_config *conf)
1522 {
1523         struct ieee80211_sub_if_data *sdata;
1524         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1525
1526         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1527         return 0;
1528 }
1529
1530 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1531 {
1532         return (mask >> (parm-1)) & 0x1;
1533 }
1534
1535 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1536                 const struct mesh_setup *setup)
1537 {
1538         u8 *new_ie;
1539         const u8 *old_ie;
1540         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1541                                         struct ieee80211_sub_if_data, u.mesh);
1542
1543         /* allocate information elements */
1544         new_ie = NULL;
1545         old_ie = ifmsh->ie;
1546
1547         if (setup->ie_len) {
1548                 new_ie = kmemdup(setup->ie, setup->ie_len,
1549                                 GFP_KERNEL);
1550                 if (!new_ie)
1551                         return -ENOMEM;
1552         }
1553         ifmsh->ie_len = setup->ie_len;
1554         ifmsh->ie = new_ie;
1555         kfree(old_ie);
1556
1557         /* now copy the rest of the setup parameters */
1558         ifmsh->mesh_id_len = setup->mesh_id_len;
1559         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1560         ifmsh->mesh_sp_id = setup->sync_method;
1561         ifmsh->mesh_pp_id = setup->path_sel_proto;
1562         ifmsh->mesh_pm_id = setup->path_metric;
1563         ifmsh->user_mpm = setup->user_mpm;
1564         ifmsh->mesh_auth_id = setup->auth_id;
1565         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1566         if (setup->is_authenticated)
1567                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1568         if (setup->is_secure)
1569                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1570
1571         /* mcast rate setting in Mesh Node */
1572         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1573                                                 sizeof(setup->mcast_rate));
1574         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1575
1576         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1577         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1578
1579         return 0;
1580 }
1581
1582 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1583                                         struct net_device *dev, u32 mask,
1584                                         const struct mesh_config *nconf)
1585 {
1586         struct mesh_config *conf;
1587         struct ieee80211_sub_if_data *sdata;
1588         struct ieee80211_if_mesh *ifmsh;
1589
1590         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1591         ifmsh = &sdata->u.mesh;
1592
1593         /* Set the config options which we are interested in setting */
1594         conf = &(sdata->u.mesh.mshcfg);
1595         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1596                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1597         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1598                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1599         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1600                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1601         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1602                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1603         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1604                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1605         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1606                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1607         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1608                 conf->element_ttl = nconf->element_ttl;
1609         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1610                 if (ifmsh->user_mpm)
1611                         return -EBUSY;
1612                 conf->auto_open_plinks = nconf->auto_open_plinks;
1613         }
1614         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1615                 conf->dot11MeshNbrOffsetMaxNeighbor =
1616                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1617         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1618                 conf->dot11MeshHWMPmaxPREQretries =
1619                         nconf->dot11MeshHWMPmaxPREQretries;
1620         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1621                 conf->path_refresh_time = nconf->path_refresh_time;
1622         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1623                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1624         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1625                 conf->dot11MeshHWMPactivePathTimeout =
1626                         nconf->dot11MeshHWMPactivePathTimeout;
1627         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1628                 conf->dot11MeshHWMPpreqMinInterval =
1629                         nconf->dot11MeshHWMPpreqMinInterval;
1630         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1631                 conf->dot11MeshHWMPperrMinInterval =
1632                         nconf->dot11MeshHWMPperrMinInterval;
1633         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1634                            mask))
1635                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1636                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1637         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1638                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1639                 ieee80211_mesh_root_setup(ifmsh);
1640         }
1641         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1642                 /* our current gate announcement implementation rides on root
1643                  * announcements, so require this ifmsh to also be a root node
1644                  * */
1645                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1646                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1647                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1648                         ieee80211_mesh_root_setup(ifmsh);
1649                 }
1650                 conf->dot11MeshGateAnnouncementProtocol =
1651                         nconf->dot11MeshGateAnnouncementProtocol;
1652         }
1653         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1654                 conf->dot11MeshHWMPRannInterval =
1655                         nconf->dot11MeshHWMPRannInterval;
1656         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1657                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1658         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1659                 /* our RSSI threshold implementation is supported only for
1660                  * devices that report signal in dBm.
1661                  */
1662                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1663                         return -ENOTSUPP;
1664                 conf->rssi_threshold = nconf->rssi_threshold;
1665         }
1666         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1667                 conf->ht_opmode = nconf->ht_opmode;
1668                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1669                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1670         }
1671         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1672                 conf->dot11MeshHWMPactivePathToRootTimeout =
1673                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1674         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1675                 conf->dot11MeshHWMProotInterval =
1676                         nconf->dot11MeshHWMProotInterval;
1677         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1678                 conf->dot11MeshHWMPconfirmationInterval =
1679                         nconf->dot11MeshHWMPconfirmationInterval;
1680         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1681                 conf->power_mode = nconf->power_mode;
1682                 ieee80211_mps_local_status_update(sdata);
1683         }
1684         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1685                 conf->dot11MeshAwakeWindowDuration =
1686                         nconf->dot11MeshAwakeWindowDuration;
1687         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1688                 conf->plink_timeout = nconf->plink_timeout;
1689         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1690         return 0;
1691 }
1692
1693 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1694                                const struct mesh_config *conf,
1695                                const struct mesh_setup *setup)
1696 {
1697         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1698         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1699         int err;
1700
1701         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1702         err = copy_mesh_setup(ifmsh, setup);
1703         if (err)
1704                 return err;
1705
1706         /* can mesh use other SMPS modes? */
1707         sdata->smps_mode = IEEE80211_SMPS_OFF;
1708         sdata->needed_rx_chains = sdata->local->rx_chains;
1709
1710         mutex_lock(&sdata->local->mtx);
1711         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1712                                         IEEE80211_CHANCTX_SHARED);
1713         mutex_unlock(&sdata->local->mtx);
1714         if (err)
1715                 return err;
1716
1717         return ieee80211_start_mesh(sdata);
1718 }
1719
1720 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1721 {
1722         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1723
1724         ieee80211_stop_mesh(sdata);
1725         mutex_lock(&sdata->local->mtx);
1726         ieee80211_vif_release_channel(sdata);
1727         mutex_unlock(&sdata->local->mtx);
1728
1729         return 0;
1730 }
1731 #endif
1732
1733 static int ieee80211_change_bss(struct wiphy *wiphy,
1734                                 struct net_device *dev,
1735                                 struct bss_parameters *params)
1736 {
1737         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1738         enum ieee80211_band band;
1739         u32 changed = 0;
1740
1741         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1742                 return -ENOENT;
1743
1744         band = ieee80211_get_sdata_band(sdata);
1745
1746         if (params->use_cts_prot >= 0) {
1747                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1748                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1749         }
1750         if (params->use_short_preamble >= 0) {
1751                 sdata->vif.bss_conf.use_short_preamble =
1752                         params->use_short_preamble;
1753                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1754         }
1755
1756         if (!sdata->vif.bss_conf.use_short_slot &&
1757             band == IEEE80211_BAND_5GHZ) {
1758                 sdata->vif.bss_conf.use_short_slot = true;
1759                 changed |= BSS_CHANGED_ERP_SLOT;
1760         }
1761
1762         if (params->use_short_slot_time >= 0) {
1763                 sdata->vif.bss_conf.use_short_slot =
1764                         params->use_short_slot_time;
1765                 changed |= BSS_CHANGED_ERP_SLOT;
1766         }
1767
1768         if (params->basic_rates) {
1769                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1770                                          wiphy->bands[band],
1771                                          params->basic_rates,
1772                                          params->basic_rates_len,
1773                                          &sdata->vif.bss_conf.basic_rates);
1774                 changed |= BSS_CHANGED_BASIC_RATES;
1775         }
1776
1777         if (params->ap_isolate >= 0) {
1778                 if (params->ap_isolate)
1779                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1780                 else
1781                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1782         }
1783
1784         if (params->ht_opmode >= 0) {
1785                 sdata->vif.bss_conf.ht_operation_mode =
1786                         (u16) params->ht_opmode;
1787                 changed |= BSS_CHANGED_HT;
1788         }
1789
1790         if (params->p2p_ctwindow >= 0) {
1791                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1792                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1793                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1794                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1795                 changed |= BSS_CHANGED_P2P_PS;
1796         }
1797
1798         if (params->p2p_opp_ps > 0) {
1799                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1800                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1801                 changed |= BSS_CHANGED_P2P_PS;
1802         } else if (params->p2p_opp_ps == 0) {
1803                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1804                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1805                 changed |= BSS_CHANGED_P2P_PS;
1806         }
1807
1808         ieee80211_bss_info_change_notify(sdata, changed);
1809
1810         return 0;
1811 }
1812
1813 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1814                                     struct net_device *dev,
1815                                     struct ieee80211_txq_params *params)
1816 {
1817         struct ieee80211_local *local = wiphy_priv(wiphy);
1818         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1819         struct ieee80211_tx_queue_params p;
1820
1821         if (!local->ops->conf_tx)
1822                 return -EOPNOTSUPP;
1823
1824         if (local->hw.queues < IEEE80211_NUM_ACS)
1825                 return -EOPNOTSUPP;
1826
1827         memset(&p, 0, sizeof(p));
1828         p.aifs = params->aifs;
1829         p.cw_max = params->cwmax;
1830         p.cw_min = params->cwmin;
1831         p.txop = params->txop;
1832
1833         /*
1834          * Setting tx queue params disables u-apsd because it's only
1835          * called in master mode.
1836          */
1837         p.uapsd = false;
1838
1839         sdata->tx_conf[params->ac] = p;
1840         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1841                 wiphy_debug(local->hw.wiphy,
1842                             "failed to set TX queue parameters for AC %d\n",
1843                             params->ac);
1844                 return -EINVAL;
1845         }
1846
1847         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1848
1849         return 0;
1850 }
1851
1852 #ifdef CONFIG_PM
1853 static int ieee80211_suspend(struct wiphy *wiphy,
1854                              struct cfg80211_wowlan *wowlan)
1855 {
1856         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1857 }
1858
1859 static int ieee80211_resume(struct wiphy *wiphy)
1860 {
1861         return __ieee80211_resume(wiphy_priv(wiphy));
1862 }
1863 #else
1864 #define ieee80211_suspend NULL
1865 #define ieee80211_resume NULL
1866 #endif
1867
1868 static int ieee80211_scan(struct wiphy *wiphy,
1869                           struct cfg80211_scan_request *req)
1870 {
1871         struct ieee80211_sub_if_data *sdata;
1872
1873         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1874
1875         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1876         case NL80211_IFTYPE_STATION:
1877         case NL80211_IFTYPE_ADHOC:
1878         case NL80211_IFTYPE_MESH_POINT:
1879         case NL80211_IFTYPE_P2P_CLIENT:
1880         case NL80211_IFTYPE_P2P_DEVICE:
1881                 break;
1882         case NL80211_IFTYPE_P2P_GO:
1883                 if (sdata->local->ops->hw_scan)
1884                         break;
1885                 /*
1886                  * FIXME: implement NoA while scanning in software,
1887                  * for now fall through to allow scanning only when
1888                  * beaconing hasn't been configured yet
1889                  */
1890         case NL80211_IFTYPE_AP:
1891                 /*
1892                  * If the scan has been forced (and the driver supports
1893                  * forcing), don't care about being beaconing already.
1894                  * This will create problems to the attached stations (e.g. all
1895                  * the  frames sent while scanning on other channel will be
1896                  * lost)
1897                  */
1898                 if (sdata->u.ap.beacon &&
1899                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
1900                      !(req->flags & NL80211_SCAN_FLAG_AP)))
1901                         return -EOPNOTSUPP;
1902                 break;
1903         default:
1904                 return -EOPNOTSUPP;
1905         }
1906
1907         return ieee80211_request_scan(sdata, req);
1908 }
1909
1910 static int
1911 ieee80211_sched_scan_start(struct wiphy *wiphy,
1912                            struct net_device *dev,
1913                            struct cfg80211_sched_scan_request *req)
1914 {
1915         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1916
1917         if (!sdata->local->ops->sched_scan_start)
1918                 return -EOPNOTSUPP;
1919
1920         return ieee80211_request_sched_scan_start(sdata, req);
1921 }
1922
1923 static int
1924 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1925 {
1926         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1927
1928         if (!sdata->local->ops->sched_scan_stop)
1929                 return -EOPNOTSUPP;
1930
1931         return ieee80211_request_sched_scan_stop(sdata);
1932 }
1933
1934 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1935                           struct cfg80211_auth_request *req)
1936 {
1937         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1938 }
1939
1940 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1941                            struct cfg80211_assoc_request *req)
1942 {
1943         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1944 }
1945
1946 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1947                             struct cfg80211_deauth_request *req)
1948 {
1949         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1950 }
1951
1952 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1953                               struct cfg80211_disassoc_request *req)
1954 {
1955         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1956 }
1957
1958 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1959                                struct cfg80211_ibss_params *params)
1960 {
1961         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
1962 }
1963
1964 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1965 {
1966         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
1967 }
1968
1969 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
1970                                     int rate[IEEE80211_NUM_BANDS])
1971 {
1972         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1973
1974         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
1975                sizeof(int) * IEEE80211_NUM_BANDS);
1976
1977         return 0;
1978 }
1979
1980 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1981 {
1982         struct ieee80211_local *local = wiphy_priv(wiphy);
1983         int err;
1984
1985         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1986                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1987
1988                 if (err)
1989                         return err;
1990         }
1991
1992         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
1993             (changed & WIPHY_PARAM_DYN_ACK)) {
1994                 s16 coverage_class;
1995
1996                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
1997                                         wiphy->coverage_class : -1;
1998                 err = drv_set_coverage_class(local, coverage_class);
1999
2000                 if (err)
2001                         return err;
2002         }
2003
2004         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2005                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2006
2007                 if (err)
2008                         return err;
2009         }
2010
2011         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2012                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2013                         return -EINVAL;
2014                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2015         }
2016         if (changed & WIPHY_PARAM_RETRY_LONG) {
2017                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2018                         return -EINVAL;
2019                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2020         }
2021         if (changed &
2022             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2023                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2024
2025         return 0;
2026 }
2027
2028 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2029                                   struct wireless_dev *wdev,
2030                                   enum nl80211_tx_power_setting type, int mbm)
2031 {
2032         struct ieee80211_local *local = wiphy_priv(wiphy);
2033         struct ieee80211_sub_if_data *sdata;
2034
2035         if (wdev) {
2036                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2037
2038                 switch (type) {
2039                 case NL80211_TX_POWER_AUTOMATIC:
2040                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2041                         break;
2042                 case NL80211_TX_POWER_LIMITED:
2043                 case NL80211_TX_POWER_FIXED:
2044                         if (mbm < 0 || (mbm % 100))
2045                                 return -EOPNOTSUPP;
2046                         sdata->user_power_level = MBM_TO_DBM(mbm);
2047                         break;
2048                 }
2049
2050                 ieee80211_recalc_txpower(sdata);
2051
2052                 return 0;
2053         }
2054
2055         switch (type) {
2056         case NL80211_TX_POWER_AUTOMATIC:
2057                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2058                 break;
2059         case NL80211_TX_POWER_LIMITED:
2060         case NL80211_TX_POWER_FIXED:
2061                 if (mbm < 0 || (mbm % 100))
2062                         return -EOPNOTSUPP;
2063                 local->user_power_level = MBM_TO_DBM(mbm);
2064                 break;
2065         }
2066
2067         mutex_lock(&local->iflist_mtx);
2068         list_for_each_entry(sdata, &local->interfaces, list)
2069                 sdata->user_power_level = local->user_power_level;
2070         list_for_each_entry(sdata, &local->interfaces, list)
2071                 ieee80211_recalc_txpower(sdata);
2072         mutex_unlock(&local->iflist_mtx);
2073
2074         return 0;
2075 }
2076
2077 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2078                                   struct wireless_dev *wdev,
2079                                   int *dbm)
2080 {
2081         struct ieee80211_local *local = wiphy_priv(wiphy);
2082         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2083
2084         if (!local->use_chanctx)
2085                 *dbm = local->hw.conf.power_level;
2086         else
2087                 *dbm = sdata->vif.bss_conf.txpower;
2088
2089         return 0;
2090 }
2091
2092 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2093                                   const u8 *addr)
2094 {
2095         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2096
2097         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2098
2099         return 0;
2100 }
2101
2102 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2103 {
2104         struct ieee80211_local *local = wiphy_priv(wiphy);
2105
2106         drv_rfkill_poll(local);
2107 }
2108
2109 #ifdef CONFIG_NL80211_TESTMODE
2110 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2111                                   struct wireless_dev *wdev,
2112                                   void *data, int len)
2113 {
2114         struct ieee80211_local *local = wiphy_priv(wiphy);
2115         struct ieee80211_vif *vif = NULL;
2116
2117         if (!local->ops->testmode_cmd)
2118                 return -EOPNOTSUPP;
2119
2120         if (wdev) {
2121                 struct ieee80211_sub_if_data *sdata;
2122
2123                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2124                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2125                         vif = &sdata->vif;
2126         }
2127
2128         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2129 }
2130
2131 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2132                                    struct sk_buff *skb,
2133                                    struct netlink_callback *cb,
2134                                    void *data, int len)
2135 {
2136         struct ieee80211_local *local = wiphy_priv(wiphy);
2137
2138         if (!local->ops->testmode_dump)
2139                 return -EOPNOTSUPP;
2140
2141         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2142 }
2143 #endif
2144
2145 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2146                                 enum ieee80211_smps_mode smps_mode)
2147 {
2148         struct sta_info *sta;
2149         enum ieee80211_smps_mode old_req;
2150         int i;
2151
2152         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2153                 return -EINVAL;
2154
2155         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2156                 return 0;
2157
2158         old_req = sdata->u.ap.req_smps;
2159         sdata->u.ap.req_smps = smps_mode;
2160
2161         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2162         if (old_req == smps_mode ||
2163             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2164                 return 0;
2165
2166          /* If no associated stations, there's no need to do anything */
2167         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2168                 sdata->smps_mode = smps_mode;
2169                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2170                 return 0;
2171         }
2172
2173         ht_dbg(sdata,
2174                "SMSP %d requested in AP mode, sending Action frame to %d stations\n",
2175                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2176
2177         mutex_lock(&sdata->local->sta_mtx);
2178         for (i = 0; i < STA_HASH_SIZE; i++) {
2179                 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i],
2180                                 lockdep_is_held(&sdata->local->sta_mtx));
2181                      sta;
2182                      sta = rcu_dereference_protected(sta->hnext,
2183                                 lockdep_is_held(&sdata->local->sta_mtx))) {
2184                         /*
2185                          * Only stations associated to our AP and
2186                          * associated VLANs
2187                          */
2188                         if (sta->sdata->bss != &sdata->u.ap)
2189                                 continue;
2190
2191                         /* This station doesn't support MIMO - skip it */
2192                         if (sta_info_tx_streams(sta) == 1)
2193                                 continue;
2194
2195                         /*
2196                          * Don't wake up a STA just to send the action frame
2197                          * unless we are getting more restrictive.
2198                          */
2199                         if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2200                             !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2201                                                            smps_mode)) {
2202                                 ht_dbg(sdata,
2203                                        "Won't send SMPS to sleeping STA %pM\n",
2204                                        sta->sta.addr);
2205                                 continue;
2206                         }
2207
2208                         /*
2209                          * If the STA is not authorized, wait until it gets
2210                          * authorized and the action frame will be sent then.
2211                          */
2212                         if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2213                                 continue;
2214
2215                         ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2216                         ieee80211_send_smps_action(sdata, smps_mode,
2217                                                    sta->sta.addr,
2218                                                    sdata->vif.bss_conf.bssid);
2219                 }
2220         }
2221         mutex_unlock(&sdata->local->sta_mtx);
2222
2223         sdata->smps_mode = smps_mode;
2224         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2225
2226         return 0;
2227 }
2228
2229 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2230                                  enum ieee80211_smps_mode smps_mode)
2231 {
2232         const u8 *ap;
2233         enum ieee80211_smps_mode old_req;
2234         int err;
2235
2236         lockdep_assert_held(&sdata->wdev.mtx);
2237
2238         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2239                 return -EINVAL;
2240
2241         old_req = sdata->u.mgd.req_smps;
2242         sdata->u.mgd.req_smps = smps_mode;
2243
2244         if (old_req == smps_mode &&
2245             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2246                 return 0;
2247
2248         /*
2249          * If not associated, or current association is not an HT
2250          * association, there's no need to do anything, just store
2251          * the new value until we associate.
2252          */
2253         if (!sdata->u.mgd.associated ||
2254             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2255                 return 0;
2256
2257         ap = sdata->u.mgd.associated->bssid;
2258
2259         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2260                 if (sdata->u.mgd.powersave)
2261                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2262                 else
2263                         smps_mode = IEEE80211_SMPS_OFF;
2264         }
2265
2266         /* send SM PS frame to AP */
2267         err = ieee80211_send_smps_action(sdata, smps_mode,
2268                                          ap, ap);
2269         if (err)
2270                 sdata->u.mgd.req_smps = old_req;
2271
2272         return err;
2273 }
2274
2275 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2276                                     bool enabled, int timeout)
2277 {
2278         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2279         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2280
2281         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2282                 return -EOPNOTSUPP;
2283
2284         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2285                 return -EOPNOTSUPP;
2286
2287         if (enabled == sdata->u.mgd.powersave &&
2288             timeout == local->dynamic_ps_forced_timeout)
2289                 return 0;
2290
2291         sdata->u.mgd.powersave = enabled;
2292         local->dynamic_ps_forced_timeout = timeout;
2293
2294         /* no change, but if automatic follow powersave */
2295         sdata_lock(sdata);
2296         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2297         sdata_unlock(sdata);
2298
2299         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2300                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2301
2302         ieee80211_recalc_ps(local, -1);
2303         ieee80211_recalc_ps_vif(sdata);
2304
2305         return 0;
2306 }
2307
2308 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2309                                          struct net_device *dev,
2310                                          s32 rssi_thold, u32 rssi_hyst)
2311 {
2312         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2313         struct ieee80211_vif *vif = &sdata->vif;
2314         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2315
2316         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2317             rssi_hyst == bss_conf->cqm_rssi_hyst)
2318                 return 0;
2319
2320         bss_conf->cqm_rssi_thold = rssi_thold;
2321         bss_conf->cqm_rssi_hyst = rssi_hyst;
2322
2323         /* tell the driver upon association, unless already associated */
2324         if (sdata->u.mgd.associated &&
2325             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2326                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2327
2328         return 0;
2329 }
2330
2331 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2332                                       struct net_device *dev,
2333                                       const u8 *addr,
2334                                       const struct cfg80211_bitrate_mask *mask)
2335 {
2336         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2337         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2338         int i, ret;
2339
2340         if (!ieee80211_sdata_running(sdata))
2341                 return -ENETDOWN;
2342
2343         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2344                 ret = drv_set_bitrate_mask(local, sdata, mask);
2345                 if (ret)
2346                         return ret;
2347         }
2348
2349         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2350                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2351                 int j;
2352
2353                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2354                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2355                        sizeof(mask->control[i].ht_mcs));
2356
2357                 sdata->rc_has_mcs_mask[i] = false;
2358                 if (!sband)
2359                         continue;
2360
2361                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2362                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2363                                 sdata->rc_has_mcs_mask[i] = true;
2364                                 break;
2365                         }
2366         }
2367
2368         return 0;
2369 }
2370
2371 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2372                                            struct ieee80211_roc_work *new_roc,
2373                                            struct ieee80211_roc_work *cur_roc)
2374 {
2375         unsigned long j = jiffies;
2376         unsigned long cur_roc_end = cur_roc->hw_start_time +
2377                                     msecs_to_jiffies(cur_roc->duration);
2378         struct ieee80211_roc_work *next_roc;
2379         int new_dur;
2380
2381         if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2382                 return false;
2383
2384         if (time_after(j + IEEE80211_ROC_MIN_LEFT, cur_roc_end))
2385                 return false;
2386
2387         ieee80211_handle_roc_started(new_roc);
2388
2389         new_dur = new_roc->duration - jiffies_to_msecs(cur_roc_end - j);
2390
2391         /* cur_roc is long enough - add new_roc to the dependents list. */
2392         if (new_dur <= 0) {
2393                 list_add_tail(&new_roc->list, &cur_roc->dependents);
2394                 return true;
2395         }
2396
2397         new_roc->duration = new_dur;
2398
2399         /*
2400          * if cur_roc was already coalesced before, we might
2401          * want to extend the next roc instead of adding
2402          * a new one.
2403          */
2404         next_roc = list_entry(cur_roc->list.next,
2405                               struct ieee80211_roc_work, list);
2406         if (&next_roc->list != &local->roc_list &&
2407             next_roc->chan == new_roc->chan &&
2408             next_roc->sdata == new_roc->sdata &&
2409             !WARN_ON(next_roc->started)) {
2410                 list_add_tail(&new_roc->list, &next_roc->dependents);
2411                 next_roc->duration = max(next_roc->duration,
2412                                          new_roc->duration);
2413                 next_roc->type = max(next_roc->type, new_roc->type);
2414                 return true;
2415         }
2416
2417         /* add right after cur_roc */
2418         list_add(&new_roc->list, &cur_roc->list);
2419
2420         return true;
2421 }
2422
2423 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2424                                     struct ieee80211_sub_if_data *sdata,
2425                                     struct ieee80211_channel *channel,
2426                                     unsigned int duration, u64 *cookie,
2427                                     struct sk_buff *txskb,
2428                                     enum ieee80211_roc_type type)
2429 {
2430         struct ieee80211_roc_work *roc, *tmp;
2431         bool queued = false;
2432         int ret;
2433
2434         lockdep_assert_held(&local->mtx);
2435
2436         if (local->use_chanctx && !local->ops->remain_on_channel)
2437                 return -EOPNOTSUPP;
2438
2439         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2440         if (!roc)
2441                 return -ENOMEM;
2442
2443         /*
2444          * If the duration is zero, then the driver
2445          * wouldn't actually do anything. Set it to
2446          * 10 for now.
2447          *
2448          * TODO: cancel the off-channel operation
2449          *       when we get the SKB's TX status and
2450          *       the wait time was zero before.
2451          */
2452         if (!duration)
2453                 duration = 10;
2454
2455         roc->chan = channel;
2456         roc->duration = duration;
2457         roc->req_duration = duration;
2458         roc->frame = txskb;
2459         roc->type = type;
2460         roc->mgmt_tx_cookie = (unsigned long)txskb;
2461         roc->sdata = sdata;
2462         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2463         INIT_LIST_HEAD(&roc->dependents);
2464
2465         /*
2466          * cookie is either the roc cookie (for normal roc)
2467          * or the SKB (for mgmt TX)
2468          */
2469         if (!txskb) {
2470                 /* local->mtx protects this */
2471                 local->roc_cookie_counter++;
2472                 roc->cookie = local->roc_cookie_counter;
2473                 /* wow, you wrapped 64 bits ... more likely a bug */
2474                 if (WARN_ON(roc->cookie == 0)) {
2475                         roc->cookie = 1;
2476                         local->roc_cookie_counter++;
2477                 }
2478                 *cookie = roc->cookie;
2479         } else {
2480                 *cookie = (unsigned long)txskb;
2481         }
2482
2483         /* if there's one pending or we're scanning, queue this one */
2484         if (!list_empty(&local->roc_list) ||
2485             local->scanning || local->radar_detect_enabled)
2486                 goto out_check_combine;
2487
2488         /* if not HW assist, just queue & schedule work */
2489         if (!local->ops->remain_on_channel) {
2490                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2491                 goto out_queue;
2492         }
2493
2494         /* otherwise actually kick it off here (for error handling) */
2495
2496         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2497         if (ret) {
2498                 kfree(roc);
2499                 return ret;
2500         }
2501
2502         roc->started = true;
2503         goto out_queue;
2504
2505  out_check_combine:
2506         list_for_each_entry(tmp, &local->roc_list, list) {
2507                 if (tmp->chan != channel || tmp->sdata != sdata)
2508                         continue;
2509
2510                 /*
2511                  * Extend this ROC if possible:
2512                  *
2513                  * If it hasn't started yet, just increase the duration
2514                  * and add the new one to the list of dependents.
2515                  * If the type of the new ROC has higher priority, modify the
2516                  * type of the previous one to match that of the new one.
2517                  */
2518                 if (!tmp->started) {
2519                         list_add_tail(&roc->list, &tmp->dependents);
2520                         tmp->duration = max(tmp->duration, roc->duration);
2521                         tmp->type = max(tmp->type, roc->type);
2522                         queued = true;
2523                         break;
2524                 }
2525
2526                 /* If it has already started, it's more difficult ... */
2527                 if (local->ops->remain_on_channel) {
2528                         /*
2529                          * In the offloaded ROC case, if it hasn't begun, add
2530                          * this new one to the dependent list to be handled
2531                          * when the master one begins. If it has begun,
2532                          * check that there's still a minimum time left and
2533                          * if so, start this one, transmitting the frame, but
2534                          * add it to the list directly after this one with
2535                          * a reduced time so we'll ask the driver to execute
2536                          * it right after finishing the previous one, in the
2537                          * hope that it'll also be executed right afterwards,
2538                          * effectively extending the old one.
2539                          * If there's no minimum time left, just add it to the
2540                          * normal list.
2541                          * TODO: the ROC type is ignored here, assuming that it
2542                          * is better to immediately use the current ROC.
2543                          */
2544                         if (!tmp->hw_begun) {
2545                                 list_add_tail(&roc->list, &tmp->dependents);
2546                                 queued = true;
2547                                 break;
2548                         }
2549
2550                         if (ieee80211_coalesce_started_roc(local, roc, tmp))
2551                                 queued = true;
2552                 } else if (del_timer_sync(&tmp->work.timer)) {
2553                         unsigned long new_end;
2554
2555                         /*
2556                          * In the software ROC case, cancel the timer, if
2557                          * that fails then the finish work is already
2558                          * queued/pending and thus we queue the new ROC
2559                          * normally, if that succeeds then we can extend
2560                          * the timer duration and TX the frame (if any.)
2561                          */
2562
2563                         list_add_tail(&roc->list, &tmp->dependents);
2564                         queued = true;
2565
2566                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2567
2568                         /* ok, it was started & we canceled timer */
2569                         if (time_after(new_end, tmp->work.timer.expires))
2570                                 mod_timer(&tmp->work.timer, new_end);
2571                         else
2572                                 add_timer(&tmp->work.timer);
2573
2574                         ieee80211_handle_roc_started(roc);
2575                 }
2576                 break;
2577         }
2578
2579  out_queue:
2580         if (!queued)
2581                 list_add_tail(&roc->list, &local->roc_list);
2582
2583         return 0;
2584 }
2585
2586 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2587                                        struct wireless_dev *wdev,
2588                                        struct ieee80211_channel *chan,
2589                                        unsigned int duration,
2590                                        u64 *cookie)
2591 {
2592         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2593         struct ieee80211_local *local = sdata->local;
2594         int ret;
2595
2596         mutex_lock(&local->mtx);
2597         ret = ieee80211_start_roc_work(local, sdata, chan,
2598                                        duration, cookie, NULL,
2599                                        IEEE80211_ROC_TYPE_NORMAL);
2600         mutex_unlock(&local->mtx);
2601
2602         return ret;
2603 }
2604
2605 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2606                                 u64 cookie, bool mgmt_tx)
2607 {
2608         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2609         int ret;
2610
2611         mutex_lock(&local->mtx);
2612         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2613                 struct ieee80211_roc_work *dep, *tmp2;
2614
2615                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2616                         if (!mgmt_tx && dep->cookie != cookie)
2617                                 continue;
2618                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2619                                 continue;
2620                         /* found dependent item -- just remove it */
2621                         list_del(&dep->list);
2622                         mutex_unlock(&local->mtx);
2623
2624                         ieee80211_roc_notify_destroy(dep, true);
2625                         return 0;
2626                 }
2627
2628                 if (!mgmt_tx && roc->cookie != cookie)
2629                         continue;
2630                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2631                         continue;
2632
2633                 found = roc;
2634                 break;
2635         }
2636
2637         if (!found) {
2638                 mutex_unlock(&local->mtx);
2639                 return -ENOENT;
2640         }
2641
2642         /*
2643          * We found the item to cancel, so do that. Note that it
2644          * may have dependents, which we also cancel (and send
2645          * the expired signal for.) Not doing so would be quite
2646          * tricky here, but we may need to fix it later.
2647          */
2648
2649         if (local->ops->remain_on_channel) {
2650                 if (found->started) {
2651                         ret = drv_cancel_remain_on_channel(local);
2652                         if (WARN_ON_ONCE(ret)) {
2653                                 mutex_unlock(&local->mtx);
2654                                 return ret;
2655                         }
2656                 }
2657
2658                 list_del(&found->list);
2659
2660                 if (found->started)
2661                         ieee80211_start_next_roc(local);
2662                 mutex_unlock(&local->mtx);
2663
2664                 ieee80211_roc_notify_destroy(found, true);
2665         } else {
2666                 /* work may be pending so use it all the time */
2667                 found->abort = true;
2668                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2669
2670                 mutex_unlock(&local->mtx);
2671
2672                 /* work will clean up etc */
2673                 flush_delayed_work(&found->work);
2674                 WARN_ON(!found->to_be_freed);
2675                 kfree(found);
2676         }
2677
2678         return 0;
2679 }
2680
2681 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2682                                               struct wireless_dev *wdev,
2683                                               u64 cookie)
2684 {
2685         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2686         struct ieee80211_local *local = sdata->local;
2687
2688         return ieee80211_cancel_roc(local, cookie, false);
2689 }
2690
2691 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2692                                            struct net_device *dev,
2693                                            struct cfg80211_chan_def *chandef,
2694                                            u32 cac_time_ms)
2695 {
2696         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2697         struct ieee80211_local *local = sdata->local;
2698         int err;
2699
2700         mutex_lock(&local->mtx);
2701         if (!list_empty(&local->roc_list) || local->scanning) {
2702                 err = -EBUSY;
2703                 goto out_unlock;
2704         }
2705
2706         /* whatever, but channel contexts should not complain about that one */
2707         sdata->smps_mode = IEEE80211_SMPS_OFF;
2708         sdata->needed_rx_chains = local->rx_chains;
2709
2710         err = ieee80211_vif_use_channel(sdata, chandef,
2711                                         IEEE80211_CHANCTX_SHARED);
2712         if (err)
2713                 goto out_unlock;
2714
2715         ieee80211_queue_delayed_work(&sdata->local->hw,
2716                                      &sdata->dfs_cac_timer_work,
2717                                      msecs_to_jiffies(cac_time_ms));
2718
2719  out_unlock:
2720         mutex_unlock(&local->mtx);
2721         return err;
2722 }
2723
2724 static struct cfg80211_beacon_data *
2725 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2726 {
2727         struct cfg80211_beacon_data *new_beacon;
2728         u8 *pos;
2729         int len;
2730
2731         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2732               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2733               beacon->probe_resp_len;
2734
2735         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2736         if (!new_beacon)
2737                 return NULL;
2738
2739         pos = (u8 *)(new_beacon + 1);
2740         if (beacon->head_len) {
2741                 new_beacon->head_len = beacon->head_len;
2742                 new_beacon->head = pos;
2743                 memcpy(pos, beacon->head, beacon->head_len);
2744                 pos += beacon->head_len;
2745         }
2746         if (beacon->tail_len) {
2747                 new_beacon->tail_len = beacon->tail_len;
2748                 new_beacon->tail = pos;
2749                 memcpy(pos, beacon->tail, beacon->tail_len);
2750                 pos += beacon->tail_len;
2751         }
2752         if (beacon->beacon_ies_len) {
2753                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2754                 new_beacon->beacon_ies = pos;
2755                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2756                 pos += beacon->beacon_ies_len;
2757         }
2758         if (beacon->proberesp_ies_len) {
2759                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2760                 new_beacon->proberesp_ies = pos;
2761                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2762                 pos += beacon->proberesp_ies_len;
2763         }
2764         if (beacon->assocresp_ies_len) {
2765                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2766                 new_beacon->assocresp_ies = pos;
2767                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2768                 pos += beacon->assocresp_ies_len;
2769         }
2770         if (beacon->probe_resp_len) {
2771                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2772                 beacon->probe_resp = pos;
2773                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2774                 pos += beacon->probe_resp_len;
2775         }
2776
2777         return new_beacon;
2778 }
2779
2780 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2781 {
2782         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2783
2784         ieee80211_queue_work(&sdata->local->hw,
2785                              &sdata->csa_finalize_work);
2786 }
2787 EXPORT_SYMBOL(ieee80211_csa_finish);
2788
2789 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2790                                           u32 *changed)
2791 {
2792         int err;
2793
2794         switch (sdata->vif.type) {
2795         case NL80211_IFTYPE_AP:
2796                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2797                                               NULL);
2798                 kfree(sdata->u.ap.next_beacon);
2799                 sdata->u.ap.next_beacon = NULL;
2800
2801                 if (err < 0)
2802                         return err;
2803                 *changed |= err;
2804                 break;
2805         case NL80211_IFTYPE_ADHOC:
2806                 err = ieee80211_ibss_finish_csa(sdata);
2807                 if (err < 0)
2808                         return err;
2809                 *changed |= err;
2810                 break;
2811 #ifdef CONFIG_MAC80211_MESH
2812         case NL80211_IFTYPE_MESH_POINT:
2813                 err = ieee80211_mesh_finish_csa(sdata);
2814                 if (err < 0)
2815                         return err;
2816                 *changed |= err;
2817                 break;
2818 #endif
2819         default:
2820                 WARN_ON(1);
2821                 return -EINVAL;
2822         }
2823
2824         return 0;
2825 }
2826
2827 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2828 {
2829         struct ieee80211_local *local = sdata->local;
2830         u32 changed = 0;
2831         int err;
2832
2833         sdata_assert_lock(sdata);
2834         lockdep_assert_held(&local->mtx);
2835         lockdep_assert_held(&local->chanctx_mtx);
2836
2837         /*
2838          * using reservation isn't immediate as it may be deferred until later
2839          * with multi-vif. once reservation is complete it will re-schedule the
2840          * work with no reserved_chanctx so verify chandef to check if it
2841          * completed successfully
2842          */
2843
2844         if (sdata->reserved_chanctx) {
2845                 /*
2846                  * with multi-vif csa driver may call ieee80211_csa_finish()
2847                  * many times while waiting for other interfaces to use their
2848                  * reservations
2849                  */
2850                 if (sdata->reserved_ready)
2851                         return 0;
2852
2853                 err = ieee80211_vif_use_reserved_context(sdata);
2854                 if (err)
2855                         return err;
2856
2857                 return 0;
2858         }
2859
2860         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2861                                         &sdata->csa_chandef))
2862                 return -EINVAL;
2863
2864         sdata->vif.csa_active = false;
2865
2866         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2867         if (err)
2868                 return err;
2869
2870         ieee80211_bss_info_change_notify(sdata, changed);
2871         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2872
2873         if (sdata->csa_block_tx) {
2874                 ieee80211_wake_vif_queues(local, sdata,
2875                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2876                 sdata->csa_block_tx = false;
2877         }
2878
2879         return 0;
2880 }
2881
2882 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2883 {
2884         if (__ieee80211_csa_finalize(sdata)) {
2885                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2886                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2887                                     GFP_KERNEL);
2888         }
2889 }
2890
2891 void ieee80211_csa_finalize_work(struct work_struct *work)
2892 {
2893         struct ieee80211_sub_if_data *sdata =
2894                 container_of(work, struct ieee80211_sub_if_data,
2895                              csa_finalize_work);
2896         struct ieee80211_local *local = sdata->local;
2897
2898         sdata_lock(sdata);
2899         mutex_lock(&local->mtx);
2900         mutex_lock(&local->chanctx_mtx);
2901
2902         /* AP might have been stopped while waiting for the lock. */
2903         if (!sdata->vif.csa_active)
2904                 goto unlock;
2905
2906         if (!ieee80211_sdata_running(sdata))
2907                 goto unlock;
2908
2909         ieee80211_csa_finalize(sdata);
2910
2911 unlock:
2912         mutex_unlock(&local->chanctx_mtx);
2913         mutex_unlock(&local->mtx);
2914         sdata_unlock(sdata);
2915 }
2916
2917 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
2918                                     struct cfg80211_csa_settings *params,
2919                                     u32 *changed)
2920 {
2921         struct ieee80211_csa_settings csa = {};
2922         int err;
2923
2924         switch (sdata->vif.type) {
2925         case NL80211_IFTYPE_AP:
2926                 sdata->u.ap.next_beacon =
2927                         cfg80211_beacon_dup(&params->beacon_after);
2928                 if (!sdata->u.ap.next_beacon)
2929                         return -ENOMEM;
2930
2931                 /*
2932                  * With a count of 0, we don't have to wait for any
2933                  * TBTT before switching, so complete the CSA
2934                  * immediately.  In theory, with a count == 1 we
2935                  * should delay the switch until just before the next
2936                  * TBTT, but that would complicate things so we switch
2937                  * immediately too.  If we would delay the switch
2938                  * until the next TBTT, we would have to set the probe
2939                  * response here.
2940                  *
2941                  * TODO: A channel switch with count <= 1 without
2942                  * sending a CSA action frame is kind of useless,
2943                  * because the clients won't know we're changing
2944                  * channels.  The action frame must be implemented
2945                  * either here or in the userspace.
2946                  */
2947                 if (params->count <= 1)
2948                         break;
2949
2950                 if ((params->n_counter_offsets_beacon >
2951                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
2952                     (params->n_counter_offsets_presp >
2953                      IEEE80211_MAX_CSA_COUNTERS_NUM))
2954                         return -EINVAL;
2955
2956                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
2957                 csa.counter_offsets_presp = params->counter_offsets_presp;
2958                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
2959                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
2960                 csa.count = params->count;
2961
2962                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
2963                 if (err < 0) {
2964                         kfree(sdata->u.ap.next_beacon);
2965                         return err;
2966                 }
2967                 *changed |= err;
2968
2969                 break;
2970         case NL80211_IFTYPE_ADHOC:
2971                 if (!sdata->vif.bss_conf.ibss_joined)
2972                         return -EINVAL;
2973
2974                 if (params->chandef.width != sdata->u.ibss.chandef.width)
2975                         return -EINVAL;
2976
2977                 switch (params->chandef.width) {
2978                 case NL80211_CHAN_WIDTH_40:
2979                         if (cfg80211_get_chandef_type(&params->chandef) !=
2980                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
2981                                 return -EINVAL;
2982                 case NL80211_CHAN_WIDTH_5:
2983                 case NL80211_CHAN_WIDTH_10:
2984                 case NL80211_CHAN_WIDTH_20_NOHT:
2985                 case NL80211_CHAN_WIDTH_20:
2986                         break;
2987                 default:
2988                         return -EINVAL;
2989                 }
2990
2991                 /* changes into another band are not supported */
2992                 if (sdata->u.ibss.chandef.chan->band !=
2993                     params->chandef.chan->band)
2994                         return -EINVAL;
2995
2996                 /* see comments in the NL80211_IFTYPE_AP block */
2997                 if (params->count > 1) {
2998                         err = ieee80211_ibss_csa_beacon(sdata, params);
2999                         if (err < 0)
3000                                 return err;
3001                         *changed |= err;
3002                 }
3003
3004                 ieee80211_send_action_csa(sdata, params);
3005
3006                 break;
3007 #ifdef CONFIG_MAC80211_MESH
3008         case NL80211_IFTYPE_MESH_POINT: {
3009                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3010
3011                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3012                         return -EINVAL;
3013
3014                 /* changes into another band are not supported */
3015                 if (sdata->vif.bss_conf.chandef.chan->band !=
3016                     params->chandef.chan->band)
3017                         return -EINVAL;
3018
3019                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3020                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3021                         if (!ifmsh->pre_value)
3022                                 ifmsh->pre_value = 1;
3023                         else
3024                                 ifmsh->pre_value++;
3025                 }
3026
3027                 /* see comments in the NL80211_IFTYPE_AP block */
3028                 if (params->count > 1) {
3029                         err = ieee80211_mesh_csa_beacon(sdata, params);
3030                         if (err < 0) {
3031                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3032                                 return err;
3033                         }
3034                         *changed |= err;
3035                 }
3036
3037                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3038                         ieee80211_send_action_csa(sdata, params);
3039
3040                 break;
3041                 }
3042 #endif
3043         default:
3044                 return -EOPNOTSUPP;
3045         }
3046
3047         return 0;
3048 }
3049
3050 static int
3051 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3052                            struct cfg80211_csa_settings *params)
3053 {
3054         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3055         struct ieee80211_local *local = sdata->local;
3056         struct ieee80211_chanctx_conf *conf;
3057         struct ieee80211_chanctx *chanctx;
3058         int err, changed = 0;
3059
3060         sdata_assert_lock(sdata);
3061         lockdep_assert_held(&local->mtx);
3062
3063         if (!list_empty(&local->roc_list) || local->scanning)
3064                 return -EBUSY;
3065
3066         if (sdata->wdev.cac_started)
3067                 return -EBUSY;
3068
3069         if (cfg80211_chandef_identical(&params->chandef,
3070                                        &sdata->vif.bss_conf.chandef))
3071                 return -EINVAL;
3072
3073         /* don't allow another channel switch if one is already active. */
3074         if (sdata->vif.csa_active)
3075                 return -EBUSY;
3076
3077         mutex_lock(&local->chanctx_mtx);
3078         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3079                                          lockdep_is_held(&local->chanctx_mtx));
3080         if (!conf) {
3081                 err = -EBUSY;
3082                 goto out;
3083         }
3084
3085         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3086         if (!chanctx) {
3087                 err = -EBUSY;
3088                 goto out;
3089         }
3090
3091         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3092                                             chanctx->mode,
3093                                             params->radar_required);
3094         if (err)
3095                 goto out;
3096
3097         /* if reservation is invalid then this will fail */
3098         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3099         if (err) {
3100                 ieee80211_vif_unreserve_chanctx(sdata);
3101                 goto out;
3102         }
3103
3104         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3105         if (err) {
3106                 ieee80211_vif_unreserve_chanctx(sdata);
3107                 goto out;
3108         }
3109
3110         sdata->csa_chandef = params->chandef;
3111         sdata->csa_block_tx = params->block_tx;
3112         sdata->vif.csa_active = true;
3113
3114         if (sdata->csa_block_tx)
3115                 ieee80211_stop_vif_queues(local, sdata,
3116                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3117
3118         if (changed) {
3119                 ieee80211_bss_info_change_notify(sdata, changed);
3120                 drv_channel_switch_beacon(sdata, &params->chandef);
3121         } else {
3122                 /* if the beacon didn't change, we can finalize immediately */
3123                 ieee80211_csa_finalize(sdata);
3124         }
3125
3126 out:
3127         mutex_unlock(&local->chanctx_mtx);
3128         return err;
3129 }
3130
3131 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3132                              struct cfg80211_csa_settings *params)
3133 {
3134         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3135         struct ieee80211_local *local = sdata->local;
3136         int err;
3137
3138         mutex_lock(&local->mtx);
3139         err = __ieee80211_channel_switch(wiphy, dev, params);
3140         mutex_unlock(&local->mtx);
3141
3142         return err;
3143 }
3144
3145 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3146                              struct cfg80211_mgmt_tx_params *params,
3147                              u64 *cookie)
3148 {
3149         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3150         struct ieee80211_local *local = sdata->local;
3151         struct sk_buff *skb;
3152         struct sta_info *sta;
3153         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3154         bool need_offchan = false;
3155         u32 flags;
3156         int ret;
3157         u8 *data;
3158
3159         if (params->dont_wait_for_ack)
3160                 flags = IEEE80211_TX_CTL_NO_ACK;
3161         else
3162                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3163                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3164
3165         if (params->no_cck)
3166                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3167
3168         switch (sdata->vif.type) {
3169         case NL80211_IFTYPE_ADHOC:
3170                 if (!sdata->vif.bss_conf.ibss_joined)
3171                         need_offchan = true;
3172                 /* fall through */
3173 #ifdef CONFIG_MAC80211_MESH
3174         case NL80211_IFTYPE_MESH_POINT:
3175                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3176                     !sdata->u.mesh.mesh_id_len)
3177                         need_offchan = true;
3178                 /* fall through */
3179 #endif
3180         case NL80211_IFTYPE_AP:
3181         case NL80211_IFTYPE_AP_VLAN:
3182         case NL80211_IFTYPE_P2P_GO:
3183                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3184                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3185                     !rcu_access_pointer(sdata->bss->beacon))
3186                         need_offchan = true;
3187                 if (!ieee80211_is_action(mgmt->frame_control) ||
3188                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3189                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3190                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3191                         break;
3192                 rcu_read_lock();
3193                 sta = sta_info_get(sdata, mgmt->da);
3194                 rcu_read_unlock();
3195                 if (!sta)
3196                         return -ENOLINK;
3197                 break;
3198         case NL80211_IFTYPE_STATION:
3199         case NL80211_IFTYPE_P2P_CLIENT:
3200                 if (!sdata->u.mgd.associated)
3201                         need_offchan = true;
3202                 break;
3203         case NL80211_IFTYPE_P2P_DEVICE:
3204                 need_offchan = true;
3205                 break;
3206         default:
3207                 return -EOPNOTSUPP;
3208         }
3209
3210         /* configurations requiring offchan cannot work if no channel has been
3211          * specified
3212          */
3213         if (need_offchan && !params->chan)
3214                 return -EINVAL;
3215
3216         mutex_lock(&local->mtx);
3217
3218         /* Check if the operating channel is the requested channel */
3219         if (!need_offchan) {
3220                 struct ieee80211_chanctx_conf *chanctx_conf;
3221
3222                 rcu_read_lock();
3223                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3224
3225                 if (chanctx_conf) {
3226                         need_offchan = params->chan &&
3227                                        (params->chan !=
3228                                         chanctx_conf->def.chan);
3229                 } else if (!params->chan) {
3230                         ret = -EINVAL;
3231                         rcu_read_unlock();
3232                         goto out_unlock;
3233                 } else {
3234                         need_offchan = true;
3235                 }
3236                 rcu_read_unlock();
3237         }
3238
3239         if (need_offchan && !params->offchan) {
3240                 ret = -EBUSY;
3241                 goto out_unlock;
3242         }
3243
3244         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3245         if (!skb) {
3246                 ret = -ENOMEM;
3247                 goto out_unlock;
3248         }
3249         skb_reserve(skb, local->hw.extra_tx_headroom);
3250
3251         data = skb_put(skb, params->len);
3252         memcpy(data, params->buf, params->len);
3253
3254         /* Update CSA counters */
3255         if (sdata->vif.csa_active &&
3256             (sdata->vif.type == NL80211_IFTYPE_AP ||
3257              sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3258             params->n_csa_offsets) {
3259                 int i;
3260                 struct beacon_data *beacon = NULL;
3261
3262                 rcu_read_lock();
3263
3264                 if (sdata->vif.type == NL80211_IFTYPE_AP)
3265                         beacon = rcu_dereference(sdata->u.ap.beacon);
3266                 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3267                         beacon = rcu_dereference(sdata->u.ibss.presp);
3268                 else if (ieee80211_vif_is_mesh(&sdata->vif))
3269                         beacon = rcu_dereference(sdata->u.mesh.beacon);
3270
3271                 if (beacon)
3272                         for (i = 0; i < params->n_csa_offsets; i++)
3273                                 data[params->csa_offsets[i]] =
3274                                         beacon->csa_current_counter;
3275
3276                 rcu_read_unlock();
3277         }
3278
3279         IEEE80211_SKB_CB(skb)->flags = flags;
3280
3281         skb->dev = sdata->dev;
3282
3283         if (!need_offchan) {
3284                 *cookie = (unsigned long) skb;
3285                 ieee80211_tx_skb(sdata, skb);
3286                 ret = 0;
3287                 goto out_unlock;
3288         }
3289
3290         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3291                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3292         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3293                 IEEE80211_SKB_CB(skb)->hw_queue =
3294                         local->hw.offchannel_tx_hw_queue;
3295
3296         /* This will handle all kinds of coalescing and immediate TX */
3297         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3298                                        params->wait, cookie, skb,
3299                                        IEEE80211_ROC_TYPE_MGMT_TX);
3300         if (ret)
3301                 kfree_skb(skb);
3302  out_unlock:
3303         mutex_unlock(&local->mtx);
3304         return ret;
3305 }
3306
3307 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3308                                          struct wireless_dev *wdev,
3309                                          u64 cookie)
3310 {
3311         struct ieee80211_local *local = wiphy_priv(wiphy);
3312
3313         return ieee80211_cancel_roc(local, cookie, true);
3314 }
3315
3316 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3317                                           struct wireless_dev *wdev,
3318                                           u16 frame_type, bool reg)
3319 {
3320         struct ieee80211_local *local = wiphy_priv(wiphy);
3321
3322         switch (frame_type) {
3323         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3324                 if (reg)
3325                         local->probe_req_reg++;
3326                 else
3327                         local->probe_req_reg--;
3328
3329                 if (!local->open_count)
3330                         break;
3331
3332                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3333                 break;
3334         default:
3335                 break;
3336         }
3337 }
3338
3339 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3340 {
3341         struct ieee80211_local *local = wiphy_priv(wiphy);
3342
3343         if (local->started)
3344                 return -EOPNOTSUPP;
3345
3346         return drv_set_antenna(local, tx_ant, rx_ant);
3347 }
3348
3349 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3350 {
3351         struct ieee80211_local *local = wiphy_priv(wiphy);
3352
3353         return drv_get_antenna(local, tx_ant, rx_ant);
3354 }
3355
3356 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3357                                     struct net_device *dev,
3358                                     struct cfg80211_gtk_rekey_data *data)
3359 {
3360         struct ieee80211_local *local = wiphy_priv(wiphy);
3361         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3362
3363         if (!local->ops->set_rekey_data)
3364                 return -EOPNOTSUPP;
3365
3366         drv_set_rekey_data(local, sdata, data);
3367
3368         return 0;
3369 }
3370
3371 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3372                                   const u8 *peer, u64 *cookie)
3373 {
3374         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3375         struct ieee80211_local *local = sdata->local;
3376         struct ieee80211_qos_hdr *nullfunc;
3377         struct sk_buff *skb;
3378         int size = sizeof(*nullfunc);
3379         __le16 fc;
3380         bool qos;
3381         struct ieee80211_tx_info *info;
3382         struct sta_info *sta;
3383         struct ieee80211_chanctx_conf *chanctx_conf;
3384         enum ieee80211_band band;
3385
3386         rcu_read_lock();
3387         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3388         if (WARN_ON(!chanctx_conf)) {
3389                 rcu_read_unlock();
3390                 return -EINVAL;
3391         }
3392         band = chanctx_conf->def.chan->band;
3393         sta = sta_info_get_bss(sdata, peer);
3394         if (sta) {
3395                 qos = sta->sta.wme;
3396         } else {
3397                 rcu_read_unlock();
3398                 return -ENOLINK;
3399         }
3400
3401         if (qos) {
3402                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3403                                  IEEE80211_STYPE_QOS_NULLFUNC |
3404                                  IEEE80211_FCTL_FROMDS);
3405         } else {
3406                 size -= 2;
3407                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3408                                  IEEE80211_STYPE_NULLFUNC |
3409                                  IEEE80211_FCTL_FROMDS);
3410         }
3411
3412         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3413         if (!skb) {
3414                 rcu_read_unlock();
3415                 return -ENOMEM;
3416         }
3417
3418         skb->dev = dev;
3419
3420         skb_reserve(skb, local->hw.extra_tx_headroom);
3421
3422         nullfunc = (void *) skb_put(skb, size);
3423         nullfunc->frame_control = fc;
3424         nullfunc->duration_id = 0;
3425         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3426         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3427         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3428         nullfunc->seq_ctrl = 0;
3429
3430         info = IEEE80211_SKB_CB(skb);
3431
3432         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3433                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3434
3435         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3436         skb->priority = 7;
3437         if (qos)
3438                 nullfunc->qos_ctrl = cpu_to_le16(7);
3439
3440         local_bh_disable();
3441         ieee80211_xmit(sdata, skb, band);
3442         local_bh_enable();
3443         rcu_read_unlock();
3444
3445         *cookie = (unsigned long) skb;
3446         return 0;
3447 }
3448
3449 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3450                                      struct wireless_dev *wdev,
3451                                      struct cfg80211_chan_def *chandef)
3452 {
3453         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3454         struct ieee80211_local *local = wiphy_priv(wiphy);
3455         struct ieee80211_chanctx_conf *chanctx_conf;
3456         int ret = -ENODATA;
3457
3458         rcu_read_lock();
3459         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3460         if (chanctx_conf) {
3461                 *chandef = sdata->vif.bss_conf.chandef;
3462                 ret = 0;
3463         } else if (local->open_count > 0 &&
3464                    local->open_count == local->monitors &&
3465                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3466                 if (local->use_chanctx)
3467                         *chandef = local->monitor_chandef;
3468                 else
3469                         *chandef = local->_oper_chandef;
3470                 ret = 0;
3471         }
3472         rcu_read_unlock();
3473
3474         return ret;
3475 }
3476
3477 #ifdef CONFIG_PM
3478 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3479 {
3480         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3481 }
3482 #endif
3483
3484 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3485                                  struct net_device *dev,
3486                                  struct cfg80211_qos_map *qos_map)
3487 {
3488         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3489         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3490
3491         if (qos_map) {
3492                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3493                 if (!new_qos_map)
3494                         return -ENOMEM;
3495                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3496         } else {
3497                 /* A NULL qos_map was passed to disable QoS mapping */
3498                 new_qos_map = NULL;
3499         }
3500
3501         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3502         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3503         if (old_qos_map)
3504                 kfree_rcu(old_qos_map, rcu_head);
3505
3506         return 0;
3507 }
3508
3509 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3510                                       struct net_device *dev,
3511                                       struct cfg80211_chan_def *chandef)
3512 {
3513         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3514         int ret;
3515         u32 changed = 0;
3516
3517         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3518         if (ret == 0)
3519                 ieee80211_bss_info_change_notify(sdata, changed);
3520
3521         return ret;
3522 }
3523
3524 const struct cfg80211_ops mac80211_config_ops = {
3525         .add_virtual_intf = ieee80211_add_iface,
3526         .del_virtual_intf = ieee80211_del_iface,
3527         .change_virtual_intf = ieee80211_change_iface,
3528         .start_p2p_device = ieee80211_start_p2p_device,
3529         .stop_p2p_device = ieee80211_stop_p2p_device,
3530         .add_key = ieee80211_add_key,
3531         .del_key = ieee80211_del_key,
3532         .get_key = ieee80211_get_key,
3533         .set_default_key = ieee80211_config_default_key,
3534         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3535         .start_ap = ieee80211_start_ap,
3536         .change_beacon = ieee80211_change_beacon,
3537         .stop_ap = ieee80211_stop_ap,
3538         .add_station = ieee80211_add_station,
3539         .del_station = ieee80211_del_station,
3540         .change_station = ieee80211_change_station,
3541         .get_station = ieee80211_get_station,
3542         .dump_station = ieee80211_dump_station,
3543         .dump_survey = ieee80211_dump_survey,
3544 #ifdef CONFIG_MAC80211_MESH
3545         .add_mpath = ieee80211_add_mpath,
3546         .del_mpath = ieee80211_del_mpath,
3547         .change_mpath = ieee80211_change_mpath,
3548         .get_mpath = ieee80211_get_mpath,
3549         .dump_mpath = ieee80211_dump_mpath,
3550         .update_mesh_config = ieee80211_update_mesh_config,
3551         .get_mesh_config = ieee80211_get_mesh_config,
3552         .join_mesh = ieee80211_join_mesh,
3553         .leave_mesh = ieee80211_leave_mesh,
3554 #endif
3555         .change_bss = ieee80211_change_bss,
3556         .set_txq_params = ieee80211_set_txq_params,
3557         .set_monitor_channel = ieee80211_set_monitor_channel,
3558         .suspend = ieee80211_suspend,
3559         .resume = ieee80211_resume,
3560         .scan = ieee80211_scan,
3561         .sched_scan_start = ieee80211_sched_scan_start,
3562         .sched_scan_stop = ieee80211_sched_scan_stop,
3563         .auth = ieee80211_auth,
3564         .assoc = ieee80211_assoc,
3565         .deauth = ieee80211_deauth,
3566         .disassoc = ieee80211_disassoc,
3567         .join_ibss = ieee80211_join_ibss,
3568         .leave_ibss = ieee80211_leave_ibss,
3569         .set_mcast_rate = ieee80211_set_mcast_rate,
3570         .set_wiphy_params = ieee80211_set_wiphy_params,
3571         .set_tx_power = ieee80211_set_tx_power,
3572         .get_tx_power = ieee80211_get_tx_power,
3573         .set_wds_peer = ieee80211_set_wds_peer,
3574         .rfkill_poll = ieee80211_rfkill_poll,
3575         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3576         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3577         .set_power_mgmt = ieee80211_set_power_mgmt,
3578         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3579         .remain_on_channel = ieee80211_remain_on_channel,
3580         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3581         .mgmt_tx = ieee80211_mgmt_tx,
3582         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3583         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3584         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3585         .set_antenna = ieee80211_set_antenna,
3586         .get_antenna = ieee80211_get_antenna,
3587         .set_rekey_data = ieee80211_set_rekey_data,
3588         .tdls_oper = ieee80211_tdls_oper,
3589         .tdls_mgmt = ieee80211_tdls_mgmt,
3590         .probe_client = ieee80211_probe_client,
3591         .set_noack_map = ieee80211_set_noack_map,
3592 #ifdef CONFIG_PM
3593         .set_wakeup = ieee80211_set_wakeup,
3594 #endif
3595         .get_channel = ieee80211_cfg_get_channel,
3596         .start_radar_detection = ieee80211_start_radar_detection,
3597         .channel_switch = ieee80211_channel_switch,
3598         .set_qos_map = ieee80211_set_qos_map,
3599         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3600 };