net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  *
   6  * This file is GPLv2 as found in COPYING.
   7  */
   8
   9 #include <linux/ieee80211.h>
  10 #include <linux/nl80211.h>
  11 #include <linux/rtnetlink.h>
  12 #include <linux/slab.h>
  13 #include <net/net_namespace.h>
  14 #include <linux/rcupdate.h>
  15 #include <linux/if_ether.h>
  16 #include <net/cfg80211.h>
  17 #include "ieee80211_i.h"
  18 #include "driver-ops.h"
  19 #include "cfg.h"
  20 #include "rate.h"
  21 #include "mesh.h"
  22
  23 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
  24                                                 const char *name,
  25                                                 enum nl80211_iftype type,
  26                                                 u32 *flags,
  27                                                 struct vif_params *params)
  28 {
  29         struct ieee80211_local *local = wiphy_priv(wiphy);
  30         struct wireless_dev *wdev;
  31         struct ieee80211_sub_if_data *sdata;
  32         int err;
  33
  34         err = ieee80211_if_add(local, name, &wdev, type, params);
  35         if (err)
  36                 return ERR_PTR(err);
  37
  38         if (type == NL80211_IFTYPE_MONITOR && flags) {
  39                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  40                 sdata->u.mntr_flags = *flags;
  41         }
  42
  43         return wdev;
  44 }
  45
  46 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  47 {
  48         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  49
  50         return 0;
  51 }
  52
  53 static int ieee80211_change_iface(struct wiphy *wiphy,
  54                                   struct net_device *dev,
  55                                   enum nl80211_iftype type, u32 *flags,
  56                                   struct vif_params *params)
  57 {
  58         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  59         int ret;
  60
  61         ret = ieee80211_if_change_type(sdata, type);
  62         if (ret)
  63                 return ret;
  64
  65         if (type == NL80211_IFTYPE_AP_VLAN &&
  66             params && params->use_4addr == 0)
  67                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  68         else if (type == NL80211_IFTYPE_STATION &&
  69                  params && params->use_4addr >= 0)
  70                 sdata->u.mgd.use_4addr = params->use_4addr;
  71
  72         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  73                 struct ieee80211_local *local = sdata->local;
  74
  75                 if (ieee80211_sdata_running(sdata)) {
  76                         u32 mask = MONITOR_FLAG_COOK_FRAMES |
  77                                    MONITOR_FLAG_ACTIVE;
  78
  79                         /*
  80                          * Prohibit MONITOR_FLAG_COOK_FRAMES and
  81                          * MONITOR_FLAG_ACTIVE to be changed while the
  82                          * interface is up.
  83                          * Else we would need to add a lot of cruft
  84                          * to update everything:
  85                          *      cooked_mntrs, monitor and all fif_* counters
  86                          *      reconfigure hardware
  87                          */
  88                         if ((*flags & mask) != (sdata->u.mntr_flags & mask))
  89                                 return -EBUSY;
  90
  91                         ieee80211_adjust_monitor_flags(sdata, -1);
  92                         sdata->u.mntr_flags = *flags;
  93                         ieee80211_adjust_monitor_flags(sdata, 1);
  94
  95                         ieee80211_configure_filter(local);
  96                 } else {
  97                         /*
  98                          * Because the interface is down, ieee80211_do_stop
  99                          * and ieee80211_do_open take care of "everything"
 100                          * mentioned in the comment above.
 101                          */
 102                         sdata->u.mntr_flags = *flags;
 103                 }
 104         }
 105
 106         return 0;
 107 }
 108
 109 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 110                                       struct wireless_dev *wdev)
 111 {
 112         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 113         int ret;
 114
 115         mutex_lock(&sdata->local->chanctx_mtx);
 116         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 117         mutex_unlock(&sdata->local->chanctx_mtx);
 118         if (ret < 0)
 119                 return ret;
 120
 121         return ieee80211_do_open(wdev, true);
 122 }
 123
 124 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 125                                       struct wireless_dev *wdev)
 126 {
 127         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 128 }
 129
 130 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 131                                   struct net_device *dev,
 132                                   u16 noack_map)
 133 {
 134         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 135
 136         sdata->noack_map = noack_map;
 137         return 0;
 138 }
 139
 140 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 141                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 142                              struct key_params *params)
 143 {
 144         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 145         struct ieee80211_local *local = sdata->local;
 146         struct sta_info *sta = NULL;
 147         const struct ieee80211_cipher_scheme *cs = NULL;
 148         struct ieee80211_key *key;
 149         int err;
 150
 151         if (!ieee80211_sdata_running(sdata))
 152                 return -ENETDOWN;
 153
 154         /* reject WEP and TKIP keys if WEP failed to initialize */
 155         switch (params->cipher) {
 156         case WLAN_CIPHER_SUITE_WEP40:
 157         case WLAN_CIPHER_SUITE_TKIP:
 158         case WLAN_CIPHER_SUITE_WEP104:
 159                 if (IS_ERR(local->wep_tx_tfm))
 160                         return -EINVAL;
 161                 break;
 162         case WLAN_CIPHER_SUITE_CCMP:
 163         case WLAN_CIPHER_SUITE_AES_CMAC:
 164         case WLAN_CIPHER_SUITE_GCMP:
 165                 break;
 166         default:
 167                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 168                 break;
 169         }
 170
 171         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 172                                   params->key, params->seq_len, params->seq,
 173                                   cs);
 174         if (IS_ERR(key))
 175                 return PTR_ERR(key);
 176
 177         if (pairwise)
 178                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 179
 180         mutex_lock(&local->sta_mtx);
 181
 182         if (mac_addr) {
 183                 if (ieee80211_vif_is_mesh(&sdata->vif))
 184                         sta = sta_info_get(sdata, mac_addr);
 185                 else
 186                         sta = sta_info_get_bss(sdata, mac_addr);
 187                 /*
 188                  * The ASSOC test makes sure the driver is ready to
 189                  * receive the key. When wpa_supplicant has roamed
 190                  * using FT, it attempts to set the key before
 191                  * association has completed, this rejects that attempt
 192                  * so it will set the key again after assocation.
 193                  *
 194                  * TODO: accept the key if we have a station entry and
 195                  *       add it to the device after the station.
 196                  */
 197                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 198                         ieee80211_key_free_unused(key);
 199                         err = -ENOENT;
 200                         goto out_unlock;
 201                 }
 202         }
 203
 204         switch (sdata->vif.type) {
 205         case NL80211_IFTYPE_STATION:
 206                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 207                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 208                 break;
 209         case NL80211_IFTYPE_AP:
 210         case NL80211_IFTYPE_AP_VLAN:
 211                 /* Keys without a station are used for TX only */
 212                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 213                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 214                 break;
 215         case NL80211_IFTYPE_ADHOC:
 216                 /* no MFP (yet) */
 217                 break;
 218         case NL80211_IFTYPE_MESH_POINT:
 219 #ifdef CONFIG_MAC80211_MESH
 220                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 221                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 222                 break;
 223 #endif
 224         case NL80211_IFTYPE_WDS:
 225         case NL80211_IFTYPE_MONITOR:
 226         case NL80211_IFTYPE_P2P_DEVICE:
 227         case NL80211_IFTYPE_UNSPECIFIED:
 228         case NUM_NL80211_IFTYPES:
 229         case NL80211_IFTYPE_P2P_CLIENT:
 230         case NL80211_IFTYPE_P2P_GO:
 231                 /* shouldn't happen */
 232                 WARN_ON_ONCE(1);
 233                 break;
 234         }
 235
 236         if (sta)
 237                 sta->cipher_scheme = cs;
 238
 239         err = ieee80211_key_link(key, sdata, sta);
 240
 241  out_unlock:
 242         mutex_unlock(&local->sta_mtx);
 243
 244         return err;
 245 }
 246
 247 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 248                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 249 {
 250         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 251         struct ieee80211_local *local = sdata->local;
 252         struct sta_info *sta;
 253         struct ieee80211_key *key = NULL;
 254         int ret;
 255
 256         mutex_lock(&local->sta_mtx);
 257         mutex_lock(&local->key_mtx);
 258
 259         if (mac_addr) {
 260                 ret = -ENOENT;
 261
 262                 sta = sta_info_get_bss(sdata, mac_addr);
 263                 if (!sta)
 264                         goto out_unlock;
 265
 266                 if (pairwise)
 267                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 268                 else
 269                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 270         } else
 271                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 272
 273         if (!key) {
 274                 ret = -ENOENT;
 275                 goto out_unlock;
 276         }
 277
 278         ieee80211_key_free(key, true);
 279
 280         ret = 0;
 281  out_unlock:
 282         mutex_unlock(&local->key_mtx);
 283         mutex_unlock(&local->sta_mtx);
 284
 285         return ret;
 286 }
 287
 288 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 289                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 290                              void *cookie,
 291                              void (*callback)(void *cookie,
 292                                               struct key_params *params))
 293 {
 294         struct ieee80211_sub_if_data *sdata;
 295         struct sta_info *sta = NULL;
 296         u8 seq[6] = {0};
 297         struct key_params params;
 298         struct ieee80211_key *key = NULL;
 299         u64 pn64;
 300         u32 iv32;
 301         u16 iv16;
 302         int err = -ENOENT;
 303
 304         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 305
 306         rcu_read_lock();
 307
 308         if (mac_addr) {
 309                 sta = sta_info_get_bss(sdata, mac_addr);
 310                 if (!sta)
 311                         goto out;
 312
 313                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 314                         key = rcu_dereference(sta->ptk[key_idx]);
 315                 else if (!pairwise &&
 316                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 317                         key = rcu_dereference(sta->gtk[key_idx]);
 318         } else
 319                 key = rcu_dereference(sdata->keys[key_idx]);
 320
 321         if (!key)
 322                 goto out;
 323
 324         memset(&params, 0, sizeof(params));
 325
 326         params.cipher = key->conf.cipher;
 327
 328         switch (key->conf.cipher) {
 329         case WLAN_CIPHER_SUITE_TKIP:
 330                 iv32 = key->u.tkip.tx.iv32;
 331                 iv16 = key->u.tkip.tx.iv16;
 332
 333                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 334                         drv_get_tkip_seq(sdata->local,
 335                                          key->conf.hw_key_idx,
 336                                          &iv32, &iv16);
 337
 338                 seq[0] = iv16 & 0xff;
 339                 seq[1] = (iv16 >> 8) & 0xff;
 340                 seq[2] = iv32 & 0xff;
 341                 seq[3] = (iv32 >> 8) & 0xff;
 342                 seq[4] = (iv32 >> 16) & 0xff;
 343                 seq[5] = (iv32 >> 24) & 0xff;
 344                 params.seq = seq;
 345                 params.seq_len = 6;
 346                 break;
 347         case WLAN_CIPHER_SUITE_CCMP:
 348                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 349                 seq[0] = pn64;
 350                 seq[1] = pn64 >> 8;
 351                 seq[2] = pn64 >> 16;
 352                 seq[3] = pn64 >> 24;
 353                 seq[4] = pn64 >> 32;
 354                 seq[5] = pn64 >> 40;
 355                 params.seq = seq;
 356                 params.seq_len = 6;
 357                 break;
 358         case WLAN_CIPHER_SUITE_AES_CMAC:
 359                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 360                 seq[0] = pn64;
 361                 seq[1] = pn64 >> 8;
 362                 seq[2] = pn64 >> 16;
 363                 seq[3] = pn64 >> 24;
 364                 seq[4] = pn64 >> 32;
 365                 seq[5] = pn64 >> 40;
 366                 params.seq = seq;
 367                 params.seq_len = 6;
 368                 break;
 369         }
 370
 371         params.key = key->conf.key;
 372         params.key_len = key->conf.keylen;
 373
 374         callback(cookie, &params);
 375         err = 0;
 376
 377  out:
 378         rcu_read_unlock();
 379         return err;
 380 }
 381
 382 static int ieee80211_config_default_key(struct wiphy *wiphy,
 383                                         struct net_device *dev,
 384                                         u8 key_idx, bool uni,
 385                                         bool multi)
 386 {
 387         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 388
 389         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 390
 391         return 0;
 392 }
 393
 394 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 395                                              struct net_device *dev,
 396                                              u8 key_idx)
 397 {
 398         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 399
 400         ieee80211_set_default_mgmt_key(sdata, key_idx);
 401
 402         return 0;
 403 }
 404
 405 void sta_set_rate_info_tx(struct sta_info *sta,
 406                           const struct ieee80211_tx_rate *rate,
 407                           struct rate_info *rinfo)
 408 {
 409         rinfo->flags = 0;
 410         if (rate->flags & IEEE80211_TX_RC_MCS) {
 411                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 412                 rinfo->mcs = rate->idx;
 413         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 414                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 415                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 416                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 417         } else {
 418                 struct ieee80211_supported_band *sband;
 419                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 420                 u16 brate;
 421
 422                 sband = sta->local->hw.wiphy->bands[
 423                                 ieee80211_get_sdata_band(sta->sdata)];
 424                 brate = sband->bitrates[rate->idx].bitrate;
 425                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 426         }
 427         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 428                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 429         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 430                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 431         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 432                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 433         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 434                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 435 }
 436
 437 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 438 {
 439         rinfo->flags = 0;
 440
 441         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 442                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 443                 rinfo->mcs = sta->last_rx_rate_idx;
 444         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 445                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 446                 rinfo->nss = sta->last_rx_rate_vht_nss;
 447                 rinfo->mcs = sta->last_rx_rate_idx;
 448         } else {
 449                 struct ieee80211_supported_band *sband;
 450                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 451                 u16 brate;
 452
 453                 sband = sta->local->hw.wiphy->bands[
 454                                 ieee80211_get_sdata_band(sta->sdata)];
 455                 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
 456                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 457         }
 458
 459         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 460                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 461         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 462                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 463         if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
 464                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 465         if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80P80MHZ)
 466                 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
 467         if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
 468                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 469 }
 470
 471 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 472 {
 473         struct ieee80211_sub_if_data *sdata = sta->sdata;
 474         struct ieee80211_local *local = sdata->local;
 475         struct rate_control_ref *ref = NULL;
 476         struct timespec uptime;
 477         u64 packets = 0;
 478         u32 thr = 0;
 479         int i, ac;
 480
 481         if (test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
 482                 ref = local->rate_ctrl;
 483
 484         sinfo->generation = sdata->local->sta_generation;
 485
 486         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 487                         STATION_INFO_RX_BYTES64 |
 488                         STATION_INFO_TX_BYTES64 |
 489                         STATION_INFO_RX_PACKETS |
 490                         STATION_INFO_TX_PACKETS |
 491                         STATION_INFO_TX_RETRIES |
 492                         STATION_INFO_TX_FAILED |
 493                         STATION_INFO_TX_BITRATE |
 494                         STATION_INFO_RX_BITRATE |
 495                         STATION_INFO_RX_DROP_MISC |
 496                         STATION_INFO_BSS_PARAM |
 497                         STATION_INFO_CONNECTED_TIME |
 498                         STATION_INFO_STA_FLAGS |
 499                         STATION_INFO_BEACON_LOSS_COUNT;
 500
 501         do_posix_clock_monotonic_gettime(&uptime);
 502         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 503
 504         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 505         sinfo->tx_bytes = 0;
 506         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
 507                 sinfo->tx_bytes += sta->tx_bytes[ac];
 508                 packets += sta->tx_packets[ac];
 509         }
 510         sinfo->tx_packets = packets;
 511         sinfo->rx_bytes = sta->rx_bytes;
 512         sinfo->rx_packets = sta->rx_packets;
 513         sinfo->tx_retries = sta->tx_retry_count;
 514         sinfo->tx_failed = sta->tx_retry_failed;
 515         sinfo->rx_dropped_misc = sta->rx_dropped;
 516         sinfo->beacon_loss_count = sta->beacon_loss_count;
 517
 518         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 519             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 520                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 521                 if (!local->ops->get_rssi ||
 522                     drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
 523                         sinfo->signal = (s8)sta->last_signal;
 524                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 525         }
 526         if (sta->chains) {
 527                 sinfo->filled |= STATION_INFO_CHAIN_SIGNAL |
 528                                  STATION_INFO_CHAIN_SIGNAL_AVG;
 529
 530                 sinfo->chains = sta->chains;
 531                 for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) {
 532                         sinfo->chain_signal[i] = sta->chain_signal_last[i];
 533                         sinfo->chain_signal_avg[i] =
 534                                 (s8) -ewma_read(&sta->chain_signal_avg[i]);
 535                 }
 536         }
 537
 538         sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
 539         sta_set_rate_info_rx(sta, &sinfo->rxrate);
 540
 541         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 542 #ifdef CONFIG_MAC80211_MESH
 543                 sinfo->filled |= STATION_INFO_LLID |
 544                                  STATION_INFO_PLID |
 545                                  STATION_INFO_PLINK_STATE |
 546                                  STATION_INFO_LOCAL_PM |
 547                                  STATION_INFO_PEER_PM |
 548                                  STATION_INFO_NONPEER_PM;
 549
 550                 sinfo->llid = sta->llid;
 551                 sinfo->plid = sta->plid;
 552                 sinfo->plink_state = sta->plink_state;
 553                 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
 554                         sinfo->filled |= STATION_INFO_T_OFFSET;
 555                         sinfo->t_offset = sta->t_offset;
 556                 }
 557                 sinfo->local_pm = sta->local_pm;
 558                 sinfo->peer_pm = sta->peer_pm;
 559                 sinfo->nonpeer_pm = sta->nonpeer_pm;
 560 #endif
 561         }
 562
 563         sinfo->bss_param.flags = 0;
 564         if (sdata->vif.bss_conf.use_cts_prot)
 565                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 566         if (sdata->vif.bss_conf.use_short_preamble)
 567                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 568         if (sdata->vif.bss_conf.use_short_slot)
 569                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 570         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 571         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 572
 573         sinfo->sta_flags.set = 0;
 574         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 575                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 576                                 BIT(NL80211_STA_FLAG_WME) |
 577                                 BIT(NL80211_STA_FLAG_MFP) |
 578                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 579                                 BIT(NL80211_STA_FLAG_ASSOCIATED) |
 580                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 581         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 582                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 583         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 584                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 585         if (test_sta_flag(sta, WLAN_STA_WME))
 586                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 587         if (test_sta_flag(sta, WLAN_STA_MFP))
 588                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 589         if (test_sta_flag(sta, WLAN_STA_AUTH))
 590                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 591         if (test_sta_flag(sta, WLAN_STA_ASSOC))
 592                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
 593         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 594                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 595
 596         /* check if the driver has a SW RC implementation */
 597         if (ref && ref->ops->get_expected_throughput)
 598                 thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv);
 599         else
 600                 thr = drv_get_expected_throughput(local, &sta->sta);
 601
 602         if (thr != 0) {
 603                 sinfo->filled |= STATION_INFO_EXPECTED_THROUGHPUT;
 604                 sinfo->expected_throughput = thr;
 605         }
 606 }
 607
 608 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
 609         "rx_packets", "rx_bytes", "wep_weak_iv_count",
 610         "rx_duplicates", "rx_fragments", "rx_dropped",
 611         "tx_packets", "tx_bytes", "tx_fragments",
 612         "tx_filtered", "tx_retry_failed", "tx_retries",
 613         "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
 614         "channel", "noise", "ch_time", "ch_time_busy",
 615         "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
 616 };
 617 #define STA_STATS_LEN   ARRAY_SIZE(ieee80211_gstrings_sta_stats)
 618
 619 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
 620                                        struct net_device *dev,
 621                                        int sset)
 622 {
 623         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 624         int rv = 0;
 625
 626         if (sset == ETH_SS_STATS)
 627                 rv += STA_STATS_LEN;
 628
 629         rv += drv_get_et_sset_count(sdata, sset);
 630
 631         if (rv == 0)
 632                 return -EOPNOTSUPP;
 633         return rv;
 634 }
 635
 636 static void ieee80211_get_et_stats(struct wiphy *wiphy,
 637                                    struct net_device *dev,
 638                                    struct ethtool_stats *stats,
 639                                    u64 *data)
 640 {
 641         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 642         struct ieee80211_chanctx_conf *chanctx_conf;
 643         struct ieee80211_channel *channel;
 644         struct sta_info *sta;
 645         struct ieee80211_local *local = sdata->local;
 646         struct station_info sinfo;
 647         struct survey_info survey;
 648         int i, q;
 649 #define STA_STATS_SURVEY_LEN 7
 650
 651         memset(data, 0, sizeof(u64) * STA_STATS_LEN);
 652
 653 #define ADD_STA_STATS(sta)                              \
 654         do {                                            \
 655                 data[i++] += sta->rx_packets;           \
 656                 data[i++] += sta->rx_bytes;             \
 657                 data[i++] += sta->wep_weak_iv_count;    \
 658                 data[i++] += sta->num_duplicates;       \
 659                 data[i++] += sta->rx_fragments;         \
 660                 data[i++] += sta->rx_dropped;           \
 661                                                         \
 662                 data[i++] += sinfo.tx_packets;          \
 663                 data[i++] += sinfo.tx_bytes;            \
 664                 data[i++] += sta->tx_fragments;         \
 665                 data[i++] += sta->tx_filtered_count;    \
 666                 data[i++] += sta->tx_retry_failed;      \
 667                 data[i++] += sta->tx_retry_count;       \
 668                 data[i++] += sta->beacon_loss_count;    \
 669         } while (0)
 670
 671         /* For Managed stations, find the single station based on BSSID
 672          * and use that.  For interface types, iterate through all available
 673          * stations and add stats for any station that is assigned to this
 674          * network device.
 675          */
 676
 677         mutex_lock(&local->sta_mtx);
 678
 679         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 680                 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
 681
 682                 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
 683                         goto do_survey;
 684
 685                 sinfo.filled = 0;
 686                 sta_set_sinfo(sta, &sinfo);
 687
 688                 i = 0;
 689                 ADD_STA_STATS(sta);
 690
 691                 data[i++] = sta->sta_state;
 692
 693
 694                 if (sinfo.filled & STATION_INFO_TX_BITRATE)
 695                         data[i] = 100000 *
 696                                 cfg80211_calculate_bitrate(&sinfo.txrate);
 697                 i++;
 698                 if (sinfo.filled & STATION_INFO_RX_BITRATE)
 699                         data[i] = 100000 *
 700                                 cfg80211_calculate_bitrate(&sinfo.rxrate);
 701                 i++;
 702
 703                 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
 704                         data[i] = (u8)sinfo.signal_avg;
 705                 i++;
 706         } else {
 707                 list_for_each_entry(sta, &local->sta_list, list) {
 708                         /* Make sure this station belongs to the proper dev */
 709                         if (sta->sdata->dev != dev)
 710                                 continue;
 711
 712                         sinfo.filled = 0;
 713                         sta_set_sinfo(sta, &sinfo);
 714                         i = 0;
 715                         ADD_STA_STATS(sta);
 716                 }
 717         }
 718
 719 do_survey:
 720         i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
 721         /* Get survey stats for current channel */
 722         survey.filled = 0;
 723
 724         rcu_read_lock();
 725         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 726         if (chanctx_conf)
 727                 channel = chanctx_conf->def.chan;
 728         else
 729                 channel = NULL;
 730         rcu_read_unlock();
 731
 732         if (channel) {
 733                 q = 0;
 734                 do {
 735                         survey.filled = 0;
 736                         if (drv_get_survey(local, q, &survey) != 0) {
 737                                 survey.filled = 0;
 738                                 break;
 739                         }
 740                         q++;
 741                 } while (channel != survey.channel);
 742         }
 743
 744         if (survey.filled)
 745                 data[i++] = survey.channel->center_freq;
 746         else
 747                 data[i++] = 0;
 748         if (survey.filled & SURVEY_INFO_NOISE_DBM)
 749                 data[i++] = (u8)survey.noise;
 750         else
 751                 data[i++] = -1LL;
 752         if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
 753                 data[i++] = survey.channel_time;
 754         else
 755                 data[i++] = -1LL;
 756         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
 757                 data[i++] = survey.channel_time_busy;
 758         else
 759                 data[i++] = -1LL;
 760         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
 761                 data[i++] = survey.channel_time_ext_busy;
 762         else
 763                 data[i++] = -1LL;
 764         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
 765                 data[i++] = survey.channel_time_rx;
 766         else
 767                 data[i++] = -1LL;
 768         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
 769                 data[i++] = survey.channel_time_tx;
 770         else
 771                 data[i++] = -1LL;
 772
 773         mutex_unlock(&local->sta_mtx);
 774
 775         if (WARN_ON(i != STA_STATS_LEN))
 776                 return;
 777
 778         drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
 779 }
 780
 781 static void ieee80211_get_et_strings(struct wiphy *wiphy,
 782                                      struct net_device *dev,
 783                                      u32 sset, u8 *data)
 784 {
 785         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 786         int sz_sta_stats = 0;
 787
 788         if (sset == ETH_SS_STATS) {
 789                 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
 790                 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats);
 791         }
 792         drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
 793 }
 794
 795 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 796                                   int idx, u8 *mac, struct station_info *sinfo)
 797 {
 798         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 799         struct ieee80211_local *local = sdata->local;
 800         struct sta_info *sta;
 801         int ret = -ENOENT;
 802
 803         mutex_lock(&local->sta_mtx);
 804
 805         sta = sta_info_get_by_idx(sdata, idx);
 806         if (sta) {
 807                 ret = 0;
 808                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 809                 sta_set_sinfo(sta, sinfo);
 810         }
 811
 812         mutex_unlock(&local->sta_mtx);
 813
 814         return ret;
 815 }
 816
 817 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 818                                  int idx, struct survey_info *survey)
 819 {
 820         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 821
 822         return drv_get_survey(local, idx, survey);
 823 }
 824
 825 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 826                                  const u8 *mac, struct station_info *sinfo)
 827 {
 828         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 829         struct ieee80211_local *local = sdata->local;
 830         struct sta_info *sta;
 831         int ret = -ENOENT;
 832
 833         mutex_lock(&local->sta_mtx);
 834
 835         sta = sta_info_get_bss(sdata, mac);
 836         if (sta) {
 837                 ret = 0;
 838                 sta_set_sinfo(sta, sinfo);
 839         }
 840
 841         mutex_unlock(&local->sta_mtx);
 842
 843         return ret;
 844 }
 845
 846 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 847                                          struct cfg80211_chan_def *chandef)
 848 {
 849         struct ieee80211_local *local = wiphy_priv(wiphy);
 850         struct ieee80211_sub_if_data *sdata;
 851         int ret = 0;
 852
 853         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 854                 return 0;
 855
 856         mutex_lock(&local->mtx);
 857         mutex_lock(&local->iflist_mtx);
 858         if (local->use_chanctx) {
 859                 sdata = rcu_dereference_protected(
 860                                 local->monitor_sdata,
 861                                 lockdep_is_held(&local->iflist_mtx));
 862                 if (sdata) {
 863                         ieee80211_vif_release_channel(sdata);
 864                         ret = ieee80211_vif_use_channel(sdata, chandef,
 865                                         IEEE80211_CHANCTX_EXCLUSIVE);
 866                 }
 867         } else if (local->open_count == local->monitors) {
 868                 local->_oper_chandef = *chandef;
 869                 ieee80211_hw_config(local, 0);
 870         }
 871
 872         if (ret == 0)
 873                 local->monitor_chandef = *chandef;
 874         mutex_unlock(&local->iflist_mtx);
 875         mutex_unlock(&local->mtx);
 876
 877         return ret;
 878 }
 879
 880 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 881                                     const u8 *resp, size_t resp_len)
 882 {
 883         struct probe_resp *new, *old;
 884
 885         if (!resp || !resp_len)
 886                 return 1;
 887
 888         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 889
 890         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 891         if (!new)
 892                 return -ENOMEM;
 893
 894         new->len = resp_len;
 895         memcpy(new->data, resp, resp_len);
 896
 897         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 898         if (old)
 899                 kfree_rcu(old, rcu_head);
 900
 901         return 0;
 902 }
 903
 904 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 905                                    struct cfg80211_beacon_data *params)
 906 {
 907         struct beacon_data *new, *old;
 908         int new_head_len, new_tail_len;
 909         int size, err;
 910         u32 changed = BSS_CHANGED_BEACON;
 911
 912         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 913
 914
 915         /* Need to have a beacon head if we don't have one yet */
 916         if (!params->head && !old)
 917                 return -EINVAL;
 918
 919         /* new or old head? */
 920         if (params->head)
 921                 new_head_len = params->head_len;
 922         else
 923                 new_head_len = old->head_len;
 924
 925         /* new or old tail? */
 926         if (params->tail || !old)
 927                 /* params->tail_len will be zero for !params->tail */
 928                 new_tail_len = params->tail_len;
 929         else
 930                 new_tail_len = old->tail_len;
 931
 932         size = sizeof(*new) + new_head_len + new_tail_len;
 933
 934         new = kzalloc(size, GFP_KERNEL);
 935         if (!new)
 936                 return -ENOMEM;
 937
 938         /* start filling the new info now */
 939
 940         /*
 941          * pointers go into the block we allocated,
 942          * memory is | beacon_data | head | tail |
 943          */
 944         new->head = ((u8 *) new) + sizeof(*new);
 945         new->tail = new->head + new_head_len;
 946         new->head_len = new_head_len;
 947         new->tail_len = new_tail_len;
 948
 949         /* copy in head */
 950         if (params->head)
 951                 memcpy(new->head, params->head, new_head_len);
 952         else
 953                 memcpy(new->head, old->head, new_head_len);
 954
 955         /* copy in optional tail */
 956         if (params->tail)
 957                 memcpy(new->tail, params->tail, new_tail_len);
 958         else
 959                 if (old)
 960                         memcpy(new->tail, old->tail, new_tail_len);
 961
 962         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 963                                        params->probe_resp_len);
 964         if (err < 0)
 965                 return err;
 966         if (err == 0)
 967                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 968
 969         rcu_assign_pointer(sdata->u.ap.beacon, new);
 970
 971         if (old)
 972                 kfree_rcu(old, rcu_head);
 973
 974         return changed;
 975 }
 976
 977 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 978                               struct cfg80211_ap_settings *params)
 979 {
 980         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 981         struct ieee80211_local *local = sdata->local;
 982         struct beacon_data *old;
 983         struct ieee80211_sub_if_data *vlan;
 984         u32 changed = BSS_CHANGED_BEACON_INT |
 985                       BSS_CHANGED_BEACON_ENABLED |
 986                       BSS_CHANGED_BEACON |
 987                       BSS_CHANGED_SSID |
 988                       BSS_CHANGED_P2P_PS;
 989         int err;
 990
 991         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 992         if (old)
 993                 return -EALREADY;
 994
 995         /* TODO: make hostapd tell us what it wants */
 996         sdata->smps_mode = IEEE80211_SMPS_OFF;
 997         sdata->needed_rx_chains = sdata->local->rx_chains;
 998
 999         mutex_lock(&local->mtx);
1000         err = ieee80211_vif_use_channel(sdata, &params->chandef,
1001                                         IEEE80211_CHANCTX_SHARED);
1002         if (!err)
1003                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
1004         mutex_unlock(&local->mtx);
1005         if (err)
1006                 return err;
1007
1008         /*
1009          * Apply control port protocol, this allows us to
1010          * not encrypt dynamic WEP control frames.
1011          */
1012         sdata->control_port_protocol = params->crypto.control_port_ethertype;
1013         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
1014         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
1015                                                         &params->crypto,
1016                                                         sdata->vif.type);
1017
1018         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
1019                 vlan->control_port_protocol =
1020                         params->crypto.control_port_ethertype;
1021                 vlan->control_port_no_encrypt =
1022                         params->crypto.control_port_no_encrypt;
1023                 vlan->encrypt_headroom =
1024                         ieee80211_cs_headroom(sdata->local,
1025                                               &params->crypto,
1026                                               vlan->vif.type);
1027         }
1028
1029         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
1030         sdata->vif.bss_conf.dtim_period = params->dtim_period;
1031         sdata->vif.bss_conf.enable_beacon = true;
1032
1033         sdata->vif.bss_conf.ssid_len = params->ssid_len;
1034         if (params->ssid_len)
1035                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
1036                        params->ssid_len);
1037         sdata->vif.bss_conf.hidden_ssid =
1038                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
1039
1040         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
1041                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
1042         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
1043                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1044         if (params->p2p_opp_ps)
1045                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1046                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1047
1048         err = ieee80211_assign_beacon(sdata, &params->beacon);
1049         if (err < 0) {
1050                 ieee80211_vif_release_channel(sdata);
1051                 return err;
1052         }
1053         changed |= err;
1054
1055         err = drv_start_ap(sdata->local, sdata);
1056         if (err) {
1057                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
1058
1059                 if (old)
1060                         kfree_rcu(old, rcu_head);
1061                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1062                 ieee80211_vif_release_channel(sdata);
1063                 return err;
1064         }
1065
1066         ieee80211_recalc_dtim(local, sdata);
1067         ieee80211_bss_info_change_notify(sdata, changed);
1068
1069         netif_carrier_on(dev);
1070         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1071                 netif_carrier_on(vlan->dev);
1072
1073         return 0;
1074 }
1075
1076 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1077                                    struct cfg80211_beacon_data *params)
1078 {
1079         struct ieee80211_sub_if_data *sdata;
1080         struct beacon_data *old;
1081         int err;
1082
1083         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1084         sdata_assert_lock(sdata);
1085
1086         /* don't allow changing the beacon while CSA is in place - offset
1087          * of channel switch counter may change
1088          */
1089         if (sdata->vif.csa_active)
1090                 return -EBUSY;
1091
1092         old = sdata_dereference(sdata->u.ap.beacon, sdata);
1093         if (!old)
1094                 return -ENOENT;
1095
1096         err = ieee80211_assign_beacon(sdata, params);
1097         if (err < 0)
1098                 return err;
1099         ieee80211_bss_info_change_notify(sdata, err);
1100         return 0;
1101 }
1102
1103 bool ieee80211_csa_needs_block_tx(struct ieee80211_local *local)
1104 {
1105         struct ieee80211_sub_if_data *sdata;
1106
1107         lockdep_assert_held(&local->mtx);
1108
1109         rcu_read_lock();
1110         list_for_each_entry_rcu(sdata, &local->interfaces, list) {
1111                 if (!ieee80211_sdata_running(sdata))
1112                         continue;
1113
1114                 if (!sdata->vif.csa_active)
1115                         continue;
1116
1117                 if (!sdata->csa_block_tx)
1118                         continue;
1119
1120                 rcu_read_unlock();
1121                 return true;
1122         }
1123         rcu_read_unlock();
1124
1125         return false;
1126 }
1127
1128 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1129 {
1130         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1131         struct ieee80211_sub_if_data *vlan;
1132         struct ieee80211_local *local = sdata->local;
1133         struct beacon_data *old_beacon;
1134         struct probe_resp *old_probe_resp;
1135         struct cfg80211_chan_def chandef;
1136
1137         sdata_assert_lock(sdata);
1138
1139         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1140         if (!old_beacon)
1141                 return -ENOENT;
1142         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1143
1144         /* abort any running channel switch */
1145         mutex_lock(&local->mtx);
1146         sdata->vif.csa_active = false;
1147         if (!ieee80211_csa_needs_block_tx(local))
1148                 ieee80211_wake_queues_by_reason(&local->hw,
1149                                         IEEE80211_MAX_QUEUE_MAP,
1150                                         IEEE80211_QUEUE_STOP_REASON_CSA);
1151         mutex_unlock(&local->mtx);
1152
1153         kfree(sdata->u.ap.next_beacon);
1154         sdata->u.ap.next_beacon = NULL;
1155
1156         /* turn off carrier for this interface and dependent VLANs */
1157         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1158                 netif_carrier_off(vlan->dev);
1159         netif_carrier_off(dev);
1160
1161         /* remove beacon and probe response */
1162         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1163         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1164         kfree_rcu(old_beacon, rcu_head);
1165         if (old_probe_resp)
1166                 kfree_rcu(old_probe_resp, rcu_head);
1167         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
1168
1169         __sta_info_flush(sdata, true);
1170         ieee80211_free_keys(sdata, true);
1171
1172         sdata->vif.bss_conf.enable_beacon = false;
1173         sdata->vif.bss_conf.ssid_len = 0;
1174         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1175         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1176
1177         if (sdata->wdev.cac_started) {
1178                 chandef = sdata->vif.bss_conf.chandef;
1179                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1180                 cfg80211_cac_event(sdata->dev, &chandef,
1181                                    NL80211_RADAR_CAC_ABORTED,
1182                                    GFP_KERNEL);
1183         }
1184
1185         drv_stop_ap(sdata->local, sdata);
1186
1187         /* free all potentially still buffered bcast frames */
1188         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1189         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1190
1191         mutex_lock(&local->mtx);
1192         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1193         ieee80211_vif_release_channel(sdata);
1194         mutex_unlock(&local->mtx);
1195
1196         return 0;
1197 }
1198
1199 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1200 struct iapp_layer2_update {
1201         u8 da[ETH_ALEN];        /* broadcast */
1202         u8 sa[ETH_ALEN];        /* STA addr */
1203         __be16 len;             /* 6 */
1204         u8 dsap;                /* 0 */
1205         u8 ssap;                /* 0 */
1206         u8 control;
1207         u8 xid_info[3];
1208 } __packed;
1209
1210 static void ieee80211_send_layer2_update(struct sta_info *sta)
1211 {
1212         struct iapp_layer2_update *msg;
1213         struct sk_buff *skb;
1214
1215         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1216          * bridge devices */
1217
1218         skb = dev_alloc_skb(sizeof(*msg));
1219         if (!skb)
1220                 return;
1221         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1222
1223         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1224          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1225
1226         eth_broadcast_addr(msg->da);
1227         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1228         msg->len = htons(6);
1229         msg->dsap = 0;
1230         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1231         msg->control = 0xaf;    /* XID response lsb.1111F101.
1232                                  * F=0 (no poll command; unsolicited frame) */
1233         msg->xid_info[0] = 0x81;        /* XID format identifier */
1234         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1235         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1236
1237         skb->dev = sta->sdata->dev;
1238         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1239         memset(skb->cb, 0, sizeof(skb->cb));
1240         netif_rx_ni(skb);
1241 }
1242
1243 static int sta_apply_auth_flags(struct ieee80211_local *local,
1244                                 struct sta_info *sta,
1245                                 u32 mask, u32 set)
1246 {
1247         int ret;
1248
1249         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1250             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1251             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1252                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1253                 if (ret)
1254                         return ret;
1255         }
1256
1257         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1258             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1259             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1260                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1261                 if (ret)
1262                         return ret;
1263         }
1264
1265         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1266                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1267                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1268                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1269                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1270                 else
1271                         ret = 0;
1272                 if (ret)
1273                         return ret;
1274         }
1275
1276         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1277             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1278             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1279                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1280                 if (ret)
1281                         return ret;
1282         }
1283
1284         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1285             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1286             test_sta_flag(sta, WLAN_STA_AUTH)) {
1287                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1288                 if (ret)
1289                         return ret;
1290         }
1291
1292         return 0;
1293 }
1294
1295 static int sta_apply_parameters(struct ieee80211_local *local,
1296                                 struct sta_info *sta,
1297                                 struct station_parameters *params)
1298 {
1299         int ret = 0;
1300         struct ieee80211_supported_band *sband;
1301         struct ieee80211_sub_if_data *sdata = sta->sdata;
1302         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1303         u32 mask, set;
1304
1305         sband = local->hw.wiphy->bands[band];
1306
1307         mask = params->sta_flags_mask;
1308         set = params->sta_flags_set;
1309
1310         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1311                 /*
1312                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1313                  * API but must follow AUTHENTICATED for driver state.
1314                  */
1315                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1316                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1317                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1318                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1319         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1320                 /*
1321                  * TDLS -- everything follows authorized, but
1322                  * only becoming authorized is possible, not
1323                  * going back
1324                  */
1325                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1326                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1327                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1328                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1329                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1330                 }
1331         }
1332
1333         ret = sta_apply_auth_flags(local, sta, mask, set);
1334         if (ret)
1335                 return ret;
1336
1337         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1338                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1339                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1340                 else
1341                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1342         }
1343
1344         if (mask & BIT(NL80211_STA_FLAG_WME)) {
1345                 if (set & BIT(NL80211_STA_FLAG_WME)) {
1346                         set_sta_flag(sta, WLAN_STA_WME);
1347                         sta->sta.wme = true;
1348                 } else {
1349                         clear_sta_flag(sta, WLAN_STA_WME);
1350                         sta->sta.wme = false;
1351                 }
1352         }
1353
1354         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1355                 if (set & BIT(NL80211_STA_FLAG_MFP))
1356                         set_sta_flag(sta, WLAN_STA_MFP);
1357                 else
1358                         clear_sta_flag(sta, WLAN_STA_MFP);
1359         }
1360
1361         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1362                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1363                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1364                 else
1365                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1366         }
1367
1368         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1369                 sta->sta.uapsd_queues = params->uapsd_queues;
1370                 sta->sta.max_sp = params->max_sp;
1371         }
1372
1373         /*
1374          * cfg80211 validates this (1-2007) and allows setting the AID
1375          * only when creating a new station entry
1376          */
1377         if (params->aid)
1378                 sta->sta.aid = params->aid;
1379
1380         /*
1381          * Some of the following updates would be racy if called on an
1382          * existing station, via ieee80211_change_station(). However,
1383          * all such changes are rejected by cfg80211 except for updates
1384          * changing the supported rates on an existing but not yet used
1385          * TDLS peer.
1386          */
1387
1388         if (params->listen_interval >= 0)
1389                 sta->listen_interval = params->listen_interval;
1390
1391         if (params->supported_rates) {
1392                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1393                                          sband, params->supported_rates,
1394                                          params->supported_rates_len,
1395                                          &sta->sta.supp_rates[band]);
1396         }
1397
1398         if (params->ht_capa)
1399                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1400                                                   params->ht_capa, sta);
1401
1402         if (params->vht_capa)
1403                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1404                                                     params->vht_capa, sta);
1405
1406         if (params->opmode_notif_used) {
1407                 /* returned value is only needed for rc update, but the
1408                  * rc isn't initialized here yet, so ignore it
1409                  */
1410                 __ieee80211_vht_handle_opmode(sdata, sta,
1411                                               params->opmode_notif,
1412                                               band, false);
1413         }
1414
1415         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1416 #ifdef CONFIG_MAC80211_MESH
1417                 u32 changed = 0;
1418
1419                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1420                         switch (params->plink_state) {
1421                         case NL80211_PLINK_ESTAB:
1422                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1423                                         changed = mesh_plink_inc_estab_count(
1424                                                         sdata);
1425                                 sta->plink_state = params->plink_state;
1426
1427                                 ieee80211_mps_sta_status_update(sta);
1428                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1429                                               sdata->u.mesh.mshcfg.power_mode);
1430                                 break;
1431                         case NL80211_PLINK_LISTEN:
1432                         case NL80211_PLINK_BLOCKED:
1433                         case NL80211_PLINK_OPN_SNT:
1434                         case NL80211_PLINK_OPN_RCVD:
1435                         case NL80211_PLINK_CNF_RCVD:
1436                         case NL80211_PLINK_HOLDING:
1437                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1438                                         changed = mesh_plink_dec_estab_count(
1439                                                         sdata);
1440                                 sta->plink_state = params->plink_state;
1441
1442                                 ieee80211_mps_sta_status_update(sta);
1443                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1444                                                 NL80211_MESH_POWER_UNKNOWN);
1445                                 break;
1446                         default:
1447                                 /*  nothing  */
1448                                 break;
1449                         }
1450                 }
1451
1452                 switch (params->plink_action) {
1453                 case NL80211_PLINK_ACTION_NO_ACTION:
1454                         /* nothing */
1455                         break;
1456                 case NL80211_PLINK_ACTION_OPEN:
1457                         changed |= mesh_plink_open(sta);
1458                         break;
1459                 case NL80211_PLINK_ACTION_BLOCK:
1460                         changed |= mesh_plink_block(sta);
1461                         break;
1462                 }
1463
1464                 if (params->local_pm)
1465                         changed |=
1466                               ieee80211_mps_set_sta_local_pm(sta,
1467                                                              params->local_pm);
1468                 ieee80211_mbss_info_change_notify(sdata, changed);
1469 #endif
1470         }
1471
1472         return 0;
1473 }
1474
1475 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1476                                  const u8 *mac,
1477                                  struct station_parameters *params)
1478 {
1479         struct ieee80211_local *local = wiphy_priv(wiphy);
1480         struct sta_info *sta;
1481         struct ieee80211_sub_if_data *sdata;
1482         int err;
1483         int layer2_update;
1484
1485         if (params->vlan) {
1486                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1487
1488                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1489                     sdata->vif.type != NL80211_IFTYPE_AP)
1490                         return -EINVAL;
1491         } else
1492                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1493
1494         if (ether_addr_equal(mac, sdata->vif.addr))
1495                 return -EINVAL;
1496
1497         if (is_multicast_ether_addr(mac))
1498                 return -EINVAL;
1499
1500         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1501         if (!sta)
1502                 return -ENOMEM;
1503
1504         /*
1505          * defaults -- if userspace wants something else we'll
1506          * change it accordingly in sta_apply_parameters()
1507          */
1508         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1509                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1510                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1511         } else {
1512                 sta->sta.tdls = true;
1513         }
1514
1515         err = sta_apply_parameters(local, sta, params);
1516         if (err) {
1517                 sta_info_free(local, sta);
1518                 return err;
1519         }
1520
1521         /*
1522          * for TDLS, rate control should be initialized only when
1523          * rates are known and station is marked authorized
1524          */
1525         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1526                 rate_control_rate_init(sta);
1527
1528         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1529                 sdata->vif.type == NL80211_IFTYPE_AP;
1530
1531         err = sta_info_insert_rcu(sta);
1532         if (err) {
1533                 rcu_read_unlock();
1534                 return err;
1535         }
1536
1537         if (layer2_update)
1538                 ieee80211_send_layer2_update(sta);
1539
1540         rcu_read_unlock();
1541
1542         return 0;
1543 }
1544
1545 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1546                                  const u8 *mac)
1547 {
1548         struct ieee80211_sub_if_data *sdata;
1549
1550         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1551
1552         if (mac)
1553                 return sta_info_destroy_addr_bss(sdata, mac);
1554
1555         sta_info_flush(sdata);
1556         return 0;
1557 }
1558
1559 static int ieee80211_change_station(struct wiphy *wiphy,
1560                                     struct net_device *dev, const u8 *mac,
1561                                     struct station_parameters *params)
1562 {
1563         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1564         struct ieee80211_local *local = wiphy_priv(wiphy);
1565         struct sta_info *sta;
1566         struct ieee80211_sub_if_data *vlansdata;
1567         enum cfg80211_station_type statype;
1568         int err;
1569
1570         mutex_lock(&local->sta_mtx);
1571
1572         sta = sta_info_get_bss(sdata, mac);
1573         if (!sta) {
1574                 err = -ENOENT;
1575                 goto out_err;
1576         }
1577
1578         switch (sdata->vif.type) {
1579         case NL80211_IFTYPE_MESH_POINT:
1580                 if (sdata->u.mesh.user_mpm)
1581                         statype = CFG80211_STA_MESH_PEER_USER;
1582                 else
1583                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1584                 break;
1585         case NL80211_IFTYPE_ADHOC:
1586                 statype = CFG80211_STA_IBSS;
1587                 break;
1588         case NL80211_IFTYPE_STATION:
1589                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1590                         statype = CFG80211_STA_AP_STA;
1591                         break;
1592                 }
1593                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1594                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1595                 else
1596                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1597                 break;
1598         case NL80211_IFTYPE_AP:
1599         case NL80211_IFTYPE_AP_VLAN:
1600                 statype = CFG80211_STA_AP_CLIENT;
1601                 break;
1602         default:
1603                 err = -EOPNOTSUPP;
1604                 goto out_err;
1605         }
1606
1607         err = cfg80211_check_station_change(wiphy, params, statype);
1608         if (err)
1609                 goto out_err;
1610
1611         if (params->vlan && params->vlan != sta->sdata->dev) {
1612                 bool prev_4addr = false;
1613                 bool new_4addr = false;
1614
1615                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1616
1617                 if (params->vlan->ieee80211_ptr->use_4addr) {
1618                         if (vlansdata->u.vlan.sta) {
1619                                 err = -EBUSY;
1620                                 goto out_err;
1621                         }
1622
1623                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1624                         new_4addr = true;
1625                 }
1626
1627                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1628                     sta->sdata->u.vlan.sta) {
1629                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1630                         prev_4addr = true;
1631                 }
1632
1633                 sta->sdata = vlansdata;
1634
1635                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1636                     prev_4addr != new_4addr) {
1637                         if (new_4addr)
1638                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1639                         else
1640                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1641                 }
1642
1643                 ieee80211_send_layer2_update(sta);
1644         }
1645
1646         err = sta_apply_parameters(local, sta, params);
1647         if (err)
1648                 goto out_err;
1649
1650         /* When peer becomes authorized, init rate control as well */
1651         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1652             test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1653                 rate_control_rate_init(sta);
1654
1655         mutex_unlock(&local->sta_mtx);
1656
1657         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1658              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1659             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1660             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1661             sta_info_tx_streams(sta) != 1) {
1662                 ht_dbg(sta->sdata,
1663                        "%pM just authorized and MIMO capable - update SMPS\n",
1664                        sta->sta.addr);
1665                 ieee80211_send_smps_action(sta->sdata,
1666                         sta->sdata->bss->req_smps,
1667                         sta->sta.addr,
1668                         sta->sdata->vif.bss_conf.bssid);
1669         }
1670
1671         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1672             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1673                 ieee80211_recalc_ps(local, -1);
1674                 ieee80211_recalc_ps_vif(sdata);
1675         }
1676
1677         return 0;
1678 out_err:
1679         mutex_unlock(&local->sta_mtx);
1680         return err;
1681 }
1682
1683 #ifdef CONFIG_MAC80211_MESH
1684 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1685                                const u8 *dst, const u8 *next_hop)
1686 {
1687         struct ieee80211_sub_if_data *sdata;
1688         struct mesh_path *mpath;
1689         struct sta_info *sta;
1690
1691         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1692
1693         rcu_read_lock();
1694         sta = sta_info_get(sdata, next_hop);
1695         if (!sta) {
1696                 rcu_read_unlock();
1697                 return -ENOENT;
1698         }
1699
1700         mpath = mesh_path_add(sdata, dst);
1701         if (IS_ERR(mpath)) {
1702                 rcu_read_unlock();
1703                 return PTR_ERR(mpath);
1704         }
1705
1706         mesh_path_fix_nexthop(mpath, sta);
1707
1708         rcu_read_unlock();
1709         return 0;
1710 }
1711
1712 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1713                                const u8 *dst)
1714 {
1715         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1716
1717         if (dst)
1718                 return mesh_path_del(sdata, dst);
1719
1720         mesh_path_flush_by_iface(sdata);
1721         return 0;
1722 }
1723
1724 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1725                                   const u8 *dst, const u8 *next_hop)
1726 {
1727         struct ieee80211_sub_if_data *sdata;
1728         struct mesh_path *mpath;
1729         struct sta_info *sta;
1730
1731         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1732
1733         rcu_read_lock();
1734
1735         sta = sta_info_get(sdata, next_hop);
1736         if (!sta) {
1737                 rcu_read_unlock();
1738                 return -ENOENT;
1739         }
1740
1741         mpath = mesh_path_lookup(sdata, dst);
1742         if (!mpath) {
1743                 rcu_read_unlock();
1744                 return -ENOENT;
1745         }
1746
1747         mesh_path_fix_nexthop(mpath, sta);
1748
1749         rcu_read_unlock();
1750         return 0;
1751 }
1752
1753 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1754                             struct mpath_info *pinfo)
1755 {
1756         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1757
1758         if (next_hop_sta)
1759                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1760         else
1761                 memset(next_hop, 0, ETH_ALEN);
1762
1763         memset(pinfo, 0, sizeof(*pinfo));
1764
1765         pinfo->generation = mesh_paths_generation;
1766
1767         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1768                         MPATH_INFO_SN |
1769                         MPATH_INFO_METRIC |
1770                         MPATH_INFO_EXPTIME |
1771                         MPATH_INFO_DISCOVERY_TIMEOUT |
1772                         MPATH_INFO_DISCOVERY_RETRIES |
1773                         MPATH_INFO_FLAGS;
1774
1775         pinfo->frame_qlen = mpath->frame_queue.qlen;
1776         pinfo->sn = mpath->sn;
1777         pinfo->metric = mpath->metric;
1778         if (time_before(jiffies, mpath->exp_time))
1779                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1780         pinfo->discovery_timeout =
1781                         jiffies_to_msecs(mpath->discovery_timeout);
1782         pinfo->discovery_retries = mpath->discovery_retries;
1783         if (mpath->flags & MESH_PATH_ACTIVE)
1784                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1785         if (mpath->flags & MESH_PATH_RESOLVING)
1786                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1787         if (mpath->flags & MESH_PATH_SN_VALID)
1788                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1789         if (mpath->flags & MESH_PATH_FIXED)
1790                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1791         if (mpath->flags & MESH_PATH_RESOLVED)
1792                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1793 }
1794
1795 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1796                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1797
1798 {
1799         struct ieee80211_sub_if_data *sdata;
1800         struct mesh_path *mpath;
1801
1802         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1803
1804         rcu_read_lock();
1805         mpath = mesh_path_lookup(sdata, dst);
1806         if (!mpath) {
1807                 rcu_read_unlock();
1808                 return -ENOENT;
1809         }
1810         memcpy(dst, mpath->dst, ETH_ALEN);
1811         mpath_set_pinfo(mpath, next_hop, pinfo);
1812         rcu_read_unlock();
1813         return 0;
1814 }
1815
1816 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1817                                 int idx, u8 *dst, u8 *next_hop,
1818                                 struct mpath_info *pinfo)
1819 {
1820         struct ieee80211_sub_if_data *sdata;
1821         struct mesh_path *mpath;
1822
1823         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1824
1825         rcu_read_lock();
1826         mpath = mesh_path_lookup_by_idx(sdata, idx);
1827         if (!mpath) {
1828                 rcu_read_unlock();
1829                 return -ENOENT;
1830         }
1831         memcpy(dst, mpath->dst, ETH_ALEN);
1832         mpath_set_pinfo(mpath, next_hop, pinfo);
1833         rcu_read_unlock();
1834         return 0;
1835 }
1836
1837 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1838                                 struct net_device *dev,
1839                                 struct mesh_config *conf)
1840 {
1841         struct ieee80211_sub_if_data *sdata;
1842         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1843
1844         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1845         return 0;
1846 }
1847
1848 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1849 {
1850         return (mask >> (parm-1)) & 0x1;
1851 }
1852
1853 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1854                 const struct mesh_setup *setup)
1855 {
1856         u8 *new_ie;
1857         const u8 *old_ie;
1858         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1859                                         struct ieee80211_sub_if_data, u.mesh);
1860
1861         /* allocate information elements */
1862         new_ie = NULL;
1863         old_ie = ifmsh->ie;
1864
1865         if (setup->ie_len) {
1866                 new_ie = kmemdup(setup->ie, setup->ie_len,
1867                                 GFP_KERNEL);
1868                 if (!new_ie)
1869                         return -ENOMEM;
1870         }
1871         ifmsh->ie_len = setup->ie_len;
1872         ifmsh->ie = new_ie;
1873         kfree(old_ie);
1874
1875         /* now copy the rest of the setup parameters */
1876         ifmsh->mesh_id_len = setup->mesh_id_len;
1877         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1878         ifmsh->mesh_sp_id = setup->sync_method;
1879         ifmsh->mesh_pp_id = setup->path_sel_proto;
1880         ifmsh->mesh_pm_id = setup->path_metric;
1881         ifmsh->user_mpm = setup->user_mpm;
1882         ifmsh->mesh_auth_id = setup->auth_id;
1883         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1884         if (setup->is_authenticated)
1885                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1886         if (setup->is_secure)
1887                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1888
1889         /* mcast rate setting in Mesh Node */
1890         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1891                                                 sizeof(setup->mcast_rate));
1892         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1893
1894         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1895         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1896
1897         return 0;
1898 }
1899
1900 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1901                                         struct net_device *dev, u32 mask,
1902                                         const struct mesh_config *nconf)
1903 {
1904         struct mesh_config *conf;
1905         struct ieee80211_sub_if_data *sdata;
1906         struct ieee80211_if_mesh *ifmsh;
1907
1908         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1909         ifmsh = &sdata->u.mesh;
1910
1911         /* Set the config options which we are interested in setting */
1912         conf = &(sdata->u.mesh.mshcfg);
1913         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1914                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1915         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1916                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1917         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1918                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1919         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1920                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1921         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1922                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1923         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1924                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1925         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1926                 conf->element_ttl = nconf->element_ttl;
1927         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1928                 if (ifmsh->user_mpm)
1929                         return -EBUSY;
1930                 conf->auto_open_plinks = nconf->auto_open_plinks;
1931         }
1932         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1933                 conf->dot11MeshNbrOffsetMaxNeighbor =
1934                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1935         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1936                 conf->dot11MeshHWMPmaxPREQretries =
1937                         nconf->dot11MeshHWMPmaxPREQretries;
1938         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1939                 conf->path_refresh_time = nconf->path_refresh_time;
1940         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1941                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1942         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1943                 conf->dot11MeshHWMPactivePathTimeout =
1944                         nconf->dot11MeshHWMPactivePathTimeout;
1945         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1946                 conf->dot11MeshHWMPpreqMinInterval =
1947                         nconf->dot11MeshHWMPpreqMinInterval;
1948         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1949                 conf->dot11MeshHWMPperrMinInterval =
1950                         nconf->dot11MeshHWMPperrMinInterval;
1951         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1952                            mask))
1953                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1954                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1955         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1956                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1957                 ieee80211_mesh_root_setup(ifmsh);
1958         }
1959         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1960                 /* our current gate announcement implementation rides on root
1961                  * announcements, so require this ifmsh to also be a root node
1962                  * */
1963                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1964                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1965                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1966                         ieee80211_mesh_root_setup(ifmsh);
1967                 }
1968                 conf->dot11MeshGateAnnouncementProtocol =
1969                         nconf->dot11MeshGateAnnouncementProtocol;
1970         }
1971         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1972                 conf->dot11MeshHWMPRannInterval =
1973                         nconf->dot11MeshHWMPRannInterval;
1974         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1975                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1976         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1977                 /* our RSSI threshold implementation is supported only for
1978                  * devices that report signal in dBm.
1979                  */
1980                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1981                         return -ENOTSUPP;
1982                 conf->rssi_threshold = nconf->rssi_threshold;
1983         }
1984         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1985                 conf->ht_opmode = nconf->ht_opmode;
1986                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1987                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1988         }
1989         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1990                 conf->dot11MeshHWMPactivePathToRootTimeout =
1991                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1992         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1993                 conf->dot11MeshHWMProotInterval =
1994                         nconf->dot11MeshHWMProotInterval;
1995         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1996                 conf->dot11MeshHWMPconfirmationInterval =
1997                         nconf->dot11MeshHWMPconfirmationInterval;
1998         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1999                 conf->power_mode = nconf->power_mode;
2000                 ieee80211_mps_local_status_update(sdata);
2001         }
2002         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
2003                 conf->dot11MeshAwakeWindowDuration =
2004                         nconf->dot11MeshAwakeWindowDuration;
2005         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
2006                 conf->plink_timeout = nconf->plink_timeout;
2007         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
2008         return 0;
2009 }
2010
2011 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
2012                                const struct mesh_config *conf,
2013                                const struct mesh_setup *setup)
2014 {
2015         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2016         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2017         int err;
2018
2019         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
2020         err = copy_mesh_setup(ifmsh, setup);
2021         if (err)
2022                 return err;
2023
2024         /* can mesh use other SMPS modes? */
2025         sdata->smps_mode = IEEE80211_SMPS_OFF;
2026         sdata->needed_rx_chains = sdata->local->rx_chains;
2027
2028         mutex_lock(&sdata->local->mtx);
2029         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
2030                                         IEEE80211_CHANCTX_SHARED);
2031         mutex_unlock(&sdata->local->mtx);
2032         if (err)
2033                 return err;
2034
2035         return ieee80211_start_mesh(sdata);
2036 }
2037
2038 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
2039 {
2040         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2041
2042         ieee80211_stop_mesh(sdata);
2043         mutex_lock(&sdata->local->mtx);
2044         ieee80211_vif_release_channel(sdata);
2045         mutex_unlock(&sdata->local->mtx);
2046
2047         return 0;
2048 }
2049 #endif
2050
2051 static int ieee80211_change_bss(struct wiphy *wiphy,
2052                                 struct net_device *dev,
2053                                 struct bss_parameters *params)
2054 {
2055         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2056         enum ieee80211_band band;
2057         u32 changed = 0;
2058
2059         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
2060                 return -ENOENT;
2061
2062         band = ieee80211_get_sdata_band(sdata);
2063
2064         if (params->use_cts_prot >= 0) {
2065                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2066                 changed |= BSS_CHANGED_ERP_CTS_PROT;
2067         }
2068         if (params->use_short_preamble >= 0) {
2069                 sdata->vif.bss_conf.use_short_preamble =
2070                         params->use_short_preamble;
2071                 changed |= BSS_CHANGED_ERP_PREAMBLE;
2072         }
2073
2074         if (!sdata->vif.bss_conf.use_short_slot &&
2075             band == IEEE80211_BAND_5GHZ) {
2076                 sdata->vif.bss_conf.use_short_slot = true;
2077                 changed |= BSS_CHANGED_ERP_SLOT;
2078         }
2079
2080         if (params->use_short_slot_time >= 0) {
2081                 sdata->vif.bss_conf.use_short_slot =
2082                         params->use_short_slot_time;
2083                 changed |= BSS_CHANGED_ERP_SLOT;
2084         }
2085
2086         if (params->basic_rates) {
2087                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2088                                          wiphy->bands[band],
2089                                          params->basic_rates,
2090                                          params->basic_rates_len,
2091                                          &sdata->vif.bss_conf.basic_rates);
2092                 changed |= BSS_CHANGED_BASIC_RATES;
2093         }
2094
2095         if (params->ap_isolate >= 0) {
2096                 if (params->ap_isolate)
2097                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2098                 else
2099                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2100         }
2101
2102         if (params->ht_opmode >= 0) {
2103                 sdata->vif.bss_conf.ht_operation_mode =
2104                         (u16) params->ht_opmode;
2105                 changed |= BSS_CHANGED_HT;
2106         }
2107
2108         if (params->p2p_ctwindow >= 0) {
2109                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2110                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2111                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2112                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2113                 changed |= BSS_CHANGED_P2P_PS;
2114         }
2115
2116         if (params->p2p_opp_ps > 0) {
2117                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2118                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2119                 changed |= BSS_CHANGED_P2P_PS;
2120         } else if (params->p2p_opp_ps == 0) {
2121                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2122                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2123                 changed |= BSS_CHANGED_P2P_PS;
2124         }
2125
2126         ieee80211_bss_info_change_notify(sdata, changed);
2127
2128         return 0;
2129 }
2130
2131 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2132                                     struct net_device *dev,
2133                                     struct ieee80211_txq_params *params)
2134 {
2135         struct ieee80211_local *local = wiphy_priv(wiphy);
2136         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2137         struct ieee80211_tx_queue_params p;
2138
2139         if (!local->ops->conf_tx)
2140                 return -EOPNOTSUPP;
2141
2142         if (local->hw.queues < IEEE80211_NUM_ACS)
2143                 return -EOPNOTSUPP;
2144
2145         memset(&p, 0, sizeof(p));
2146         p.aifs = params->aifs;
2147         p.cw_max = params->cwmax;
2148         p.cw_min = params->cwmin;
2149         p.txop = params->txop;
2150
2151         /*
2152          * Setting tx queue params disables u-apsd because it's only
2153          * called in master mode.
2154          */
2155         p.uapsd = false;
2156
2157         sdata->tx_conf[params->ac] = p;
2158         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2159                 wiphy_debug(local->hw.wiphy,
2160                             "failed to set TX queue parameters for AC %d\n",
2161                             params->ac);
2162                 return -EINVAL;
2163         }
2164
2165         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2166
2167         return 0;
2168 }
2169
2170 #ifdef CONFIG_PM
2171 static int ieee80211_suspend(struct wiphy *wiphy,
2172                              struct cfg80211_wowlan *wowlan)
2173 {
2174         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2175 }
2176
2177 static int ieee80211_resume(struct wiphy *wiphy)
2178 {
2179         return __ieee80211_resume(wiphy_priv(wiphy));
2180 }
2181 #else
2182 #define ieee80211_suspend NULL
2183 #define ieee80211_resume NULL
2184 #endif
2185
2186 static int ieee80211_scan(struct wiphy *wiphy,
2187                           struct cfg80211_scan_request *req)
2188 {
2189         struct ieee80211_sub_if_data *sdata;
2190
2191         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2192
2193         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2194         case NL80211_IFTYPE_STATION:
2195         case NL80211_IFTYPE_ADHOC:
2196         case NL80211_IFTYPE_MESH_POINT:
2197         case NL80211_IFTYPE_P2P_CLIENT:
2198         case NL80211_IFTYPE_P2P_DEVICE:
2199                 break;
2200         case NL80211_IFTYPE_P2P_GO:
2201                 if (sdata->local->ops->hw_scan)
2202                         break;
2203                 /*
2204                  * FIXME: implement NoA while scanning in software,
2205                  * for now fall through to allow scanning only when
2206                  * beaconing hasn't been configured yet
2207                  */
2208         case NL80211_IFTYPE_AP:
2209                 /*
2210                  * If the scan has been forced (and the driver supports
2211                  * forcing), don't care about being beaconing already.
2212                  * This will create problems to the attached stations (e.g. all
2213                  * the  frames sent while scanning on other channel will be
2214                  * lost)
2215                  */
2216                 if (sdata->u.ap.beacon &&
2217                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2218                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2219                         return -EOPNOTSUPP;
2220                 break;
2221         default:
2222                 return -EOPNOTSUPP;
2223         }
2224
2225         return ieee80211_request_scan(sdata, req);
2226 }
2227
2228 static int
2229 ieee80211_sched_scan_start(struct wiphy *wiphy,
2230                            struct net_device *dev,
2231                            struct cfg80211_sched_scan_request *req)
2232 {
2233         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2234
2235         if (!sdata->local->ops->sched_scan_start)
2236                 return -EOPNOTSUPP;
2237
2238         return ieee80211_request_sched_scan_start(sdata, req);
2239 }
2240
2241 static int
2242 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2243 {
2244         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2245
2246         if (!sdata->local->ops->sched_scan_stop)
2247                 return -EOPNOTSUPP;
2248
2249         return ieee80211_request_sched_scan_stop(sdata);
2250 }
2251
2252 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2253                           struct cfg80211_auth_request *req)
2254 {
2255         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2256 }
2257
2258 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2259                            struct cfg80211_assoc_request *req)
2260 {
2261         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2262 }
2263
2264 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2265                             struct cfg80211_deauth_request *req)
2266 {
2267         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2268 }
2269
2270 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2271                               struct cfg80211_disassoc_request *req)
2272 {
2273         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2274 }
2275
2276 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2277                                struct cfg80211_ibss_params *params)
2278 {
2279         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2280 }
2281
2282 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2283 {
2284         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2285 }
2286
2287 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2288                                     int rate[IEEE80211_NUM_BANDS])
2289 {
2290         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2291
2292         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2293                sizeof(int) * IEEE80211_NUM_BANDS);
2294
2295         return 0;
2296 }
2297
2298 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2299 {
2300         struct ieee80211_local *local = wiphy_priv(wiphy);
2301         int err;
2302
2303         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2304                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2305
2306                 if (err)
2307                         return err;
2308         }
2309
2310         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2311                 err = drv_set_coverage_class(local, wiphy->coverage_class);
2312
2313                 if (err)
2314                         return err;
2315         }
2316
2317         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2318                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2319
2320                 if (err)
2321                         return err;
2322         }
2323
2324         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2325                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2326                         return -EINVAL;
2327                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2328         }
2329         if (changed & WIPHY_PARAM_RETRY_LONG) {
2330                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2331                         return -EINVAL;
2332                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2333         }
2334         if (changed &
2335             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2336                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2337
2338         return 0;
2339 }
2340
2341 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2342                                   struct wireless_dev *wdev,
2343                                   enum nl80211_tx_power_setting type, int mbm)
2344 {
2345         struct ieee80211_local *local = wiphy_priv(wiphy);
2346         struct ieee80211_sub_if_data *sdata;
2347
2348         if (wdev) {
2349                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2350
2351                 switch (type) {
2352                 case NL80211_TX_POWER_AUTOMATIC:
2353                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2354                         break;
2355                 case NL80211_TX_POWER_LIMITED:
2356                 case NL80211_TX_POWER_FIXED:
2357                         if (mbm < 0 || (mbm % 100))
2358                                 return -EOPNOTSUPP;
2359                         sdata->user_power_level = MBM_TO_DBM(mbm);
2360                         break;
2361                 }
2362
2363                 ieee80211_recalc_txpower(sdata);
2364
2365                 return 0;
2366         }
2367
2368         switch (type) {
2369         case NL80211_TX_POWER_AUTOMATIC:
2370                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2371                 break;
2372         case NL80211_TX_POWER_LIMITED:
2373         case NL80211_TX_POWER_FIXED:
2374                 if (mbm < 0 || (mbm % 100))
2375                         return -EOPNOTSUPP;
2376                 local->user_power_level = MBM_TO_DBM(mbm);
2377                 break;
2378         }
2379
2380         mutex_lock(&local->iflist_mtx);
2381         list_for_each_entry(sdata, &local->interfaces, list)
2382                 sdata->user_power_level = local->user_power_level;
2383         list_for_each_entry(sdata, &local->interfaces, list)
2384                 ieee80211_recalc_txpower(sdata);
2385         mutex_unlock(&local->iflist_mtx);
2386
2387         return 0;
2388 }
2389
2390 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2391                                   struct wireless_dev *wdev,
2392                                   int *dbm)
2393 {
2394         struct ieee80211_local *local = wiphy_priv(wiphy);
2395         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2396
2397         if (!local->use_chanctx)
2398                 *dbm = local->hw.conf.power_level;
2399         else
2400                 *dbm = sdata->vif.bss_conf.txpower;
2401
2402         return 0;
2403 }
2404
2405 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2406                                   const u8 *addr)
2407 {
2408         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2409
2410         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2411
2412         return 0;
2413 }
2414
2415 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2416 {
2417         struct ieee80211_local *local = wiphy_priv(wiphy);
2418
2419         drv_rfkill_poll(local);
2420 }
2421
2422 #ifdef CONFIG_NL80211_TESTMODE
2423 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2424                                   struct wireless_dev *wdev,
2425                                   void *data, int len)
2426 {
2427         struct ieee80211_local *local = wiphy_priv(wiphy);
2428         struct ieee80211_vif *vif = NULL;
2429
2430         if (!local->ops->testmode_cmd)
2431                 return -EOPNOTSUPP;
2432
2433         if (wdev) {
2434                 struct ieee80211_sub_if_data *sdata;
2435
2436                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2437                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2438                         vif = &sdata->vif;
2439         }
2440
2441         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2442 }
2443
2444 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2445                                    struct sk_buff *skb,
2446                                    struct netlink_callback *cb,
2447                                    void *data, int len)
2448 {
2449         struct ieee80211_local *local = wiphy_priv(wiphy);
2450
2451         if (!local->ops->testmode_dump)
2452                 return -EOPNOTSUPP;
2453
2454         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2455 }
2456 #endif
2457
2458 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2459                                 enum ieee80211_smps_mode smps_mode)
2460 {
2461         struct sta_info *sta;
2462         enum ieee80211_smps_mode old_req;
2463         int i;
2464
2465         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2466                 return -EINVAL;
2467
2468         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2469                 return 0;
2470
2471         old_req = sdata->u.ap.req_smps;
2472         sdata->u.ap.req_smps = smps_mode;
2473
2474         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2475         if (old_req == smps_mode ||
2476             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2477                 return 0;
2478
2479          /* If no associated stations, there's no need to do anything */
2480         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2481                 sdata->smps_mode = smps_mode;
2482                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2483                 return 0;
2484         }
2485
2486         ht_dbg(sdata,
2487                "SMSP %d requested in AP mode, sending Action frame to %d stations\n",
2488                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2489
2490         mutex_lock(&sdata->local->sta_mtx);
2491         for (i = 0; i < STA_HASH_SIZE; i++) {
2492                 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i],
2493                                 lockdep_is_held(&sdata->local->sta_mtx));
2494                      sta;
2495                      sta = rcu_dereference_protected(sta->hnext,
2496                                 lockdep_is_held(&sdata->local->sta_mtx))) {
2497                         /*
2498                          * Only stations associated to our AP and
2499                          * associated VLANs
2500                          */
2501                         if (sta->sdata->bss != &sdata->u.ap)
2502                                 continue;
2503
2504                         /* This station doesn't support MIMO - skip it */
2505                         if (sta_info_tx_streams(sta) == 1)
2506                                 continue;
2507
2508                         /*
2509                          * Don't wake up a STA just to send the action frame
2510                          * unless we are getting more restrictive.
2511                          */
2512                         if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2513                             !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2514                                                            smps_mode)) {
2515                                 ht_dbg(sdata,
2516                                        "Won't send SMPS to sleeping STA %pM\n",
2517                                        sta->sta.addr);
2518                                 continue;
2519                         }
2520
2521                         /*
2522                          * If the STA is not authorized, wait until it gets
2523                          * authorized and the action frame will be sent then.
2524                          */
2525                         if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2526                                 continue;
2527
2528                         ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2529                         ieee80211_send_smps_action(sdata, smps_mode,
2530                                                    sta->sta.addr,
2531                                                    sdata->vif.bss_conf.bssid);
2532                 }
2533         }
2534         mutex_unlock(&sdata->local->sta_mtx);
2535
2536         sdata->smps_mode = smps_mode;
2537         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2538
2539         return 0;
2540 }
2541
2542 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2543                                  enum ieee80211_smps_mode smps_mode)
2544 {
2545         const u8 *ap;
2546         enum ieee80211_smps_mode old_req;
2547         int err;
2548
2549         lockdep_assert_held(&sdata->wdev.mtx);
2550
2551         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2552                 return -EINVAL;
2553
2554         old_req = sdata->u.mgd.req_smps;
2555         sdata->u.mgd.req_smps = smps_mode;
2556
2557         if (old_req == smps_mode &&
2558             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2559                 return 0;
2560
2561         /*
2562          * If not associated, or current association is not an HT
2563          * association, there's no need to do anything, just store
2564          * the new value until we associate.
2565          */
2566         if (!sdata->u.mgd.associated ||
2567             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2568                 return 0;
2569
2570         ap = sdata->u.mgd.associated->bssid;
2571
2572         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2573                 if (sdata->u.mgd.powersave)
2574                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2575                 else
2576                         smps_mode = IEEE80211_SMPS_OFF;
2577         }
2578
2579         /* send SM PS frame to AP */
2580         err = ieee80211_send_smps_action(sdata, smps_mode,
2581                                          ap, ap);
2582         if (err)
2583                 sdata->u.mgd.req_smps = old_req;
2584
2585         return err;
2586 }
2587
2588 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2589                                     bool enabled, int timeout)
2590 {
2591         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2592         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2593
2594         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2595                 return -EOPNOTSUPP;
2596
2597         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2598                 return -EOPNOTSUPP;
2599
2600         if (enabled == sdata->u.mgd.powersave &&
2601             timeout == local->dynamic_ps_forced_timeout)
2602                 return 0;
2603
2604         sdata->u.mgd.powersave = enabled;
2605         local->dynamic_ps_forced_timeout = timeout;
2606
2607         /* no change, but if automatic follow powersave */
2608         sdata_lock(sdata);
2609         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2610         sdata_unlock(sdata);
2611
2612         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2613                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2614
2615         ieee80211_recalc_ps(local, -1);
2616         ieee80211_recalc_ps_vif(sdata);
2617
2618         return 0;
2619 }
2620
2621 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2622                                          struct net_device *dev,
2623                                          s32 rssi_thold, u32 rssi_hyst)
2624 {
2625         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2626         struct ieee80211_vif *vif = &sdata->vif;
2627         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2628
2629         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2630             rssi_hyst == bss_conf->cqm_rssi_hyst)
2631                 return 0;
2632
2633         bss_conf->cqm_rssi_thold = rssi_thold;
2634         bss_conf->cqm_rssi_hyst = rssi_hyst;
2635
2636         /* tell the driver upon association, unless already associated */
2637         if (sdata->u.mgd.associated &&
2638             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2639                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2640
2641         return 0;
2642 }
2643
2644 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2645                                       struct net_device *dev,
2646                                       const u8 *addr,
2647                                       const struct cfg80211_bitrate_mask *mask)
2648 {
2649         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2650         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2651         int i, ret;
2652
2653         if (!ieee80211_sdata_running(sdata))
2654                 return -ENETDOWN;
2655
2656         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2657                 ret = drv_set_bitrate_mask(local, sdata, mask);
2658                 if (ret)
2659                         return ret;
2660         }
2661
2662         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2663                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2664                 int j;
2665
2666                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2667                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2668                        sizeof(mask->control[i].ht_mcs));
2669
2670                 sdata->rc_has_mcs_mask[i] = false;
2671                 if (!sband)
2672                         continue;
2673
2674                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2675                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2676                                 sdata->rc_has_mcs_mask[i] = true;
2677                                 break;
2678                         }
2679         }
2680
2681         return 0;
2682 }
2683
2684 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2685                                     struct ieee80211_sub_if_data *sdata,
2686                                     struct ieee80211_channel *channel,
2687                                     unsigned int duration, u64 *cookie,
2688                                     struct sk_buff *txskb,
2689                                     enum ieee80211_roc_type type)
2690 {
2691         struct ieee80211_roc_work *roc, *tmp;
2692         bool queued = false;
2693         int ret;
2694
2695         lockdep_assert_held(&local->mtx);
2696
2697         if (local->use_chanctx && !local->ops->remain_on_channel)
2698                 return -EOPNOTSUPP;
2699
2700         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2701         if (!roc)
2702                 return -ENOMEM;
2703
2704         /*
2705          * If the duration is zero, then the driver
2706          * wouldn't actually do anything. Set it to
2707          * 10 for now.
2708          *
2709          * TODO: cancel the off-channel operation
2710          *       when we get the SKB's TX status and
2711          *       the wait time was zero before.
2712          */
2713         if (!duration)
2714                 duration = 10;
2715
2716         roc->chan = channel;
2717         roc->duration = duration;
2718         roc->req_duration = duration;
2719         roc->frame = txskb;
2720         roc->type = type;
2721         roc->mgmt_tx_cookie = (unsigned long)txskb;
2722         roc->sdata = sdata;
2723         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2724         INIT_LIST_HEAD(&roc->dependents);
2725
2726         /*
2727          * cookie is either the roc cookie (for normal roc)
2728          * or the SKB (for mgmt TX)
2729          */
2730         if (!txskb) {
2731                 /* local->mtx protects this */
2732                 local->roc_cookie_counter++;
2733                 roc->cookie = local->roc_cookie_counter;
2734                 /* wow, you wrapped 64 bits ... more likely a bug */
2735                 if (WARN_ON(roc->cookie == 0)) {
2736                         roc->cookie = 1;
2737                         local->roc_cookie_counter++;
2738                 }
2739                 *cookie = roc->cookie;
2740         } else {
2741                 *cookie = (unsigned long)txskb;
2742         }
2743
2744         /* if there's one pending or we're scanning, queue this one */
2745         if (!list_empty(&local->roc_list) ||
2746             local->scanning || local->radar_detect_enabled)
2747                 goto out_check_combine;
2748
2749         /* if not HW assist, just queue & schedule work */
2750         if (!local->ops->remain_on_channel) {
2751                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2752                 goto out_queue;
2753         }
2754
2755         /* otherwise actually kick it off here (for error handling) */
2756
2757         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2758         if (ret) {
2759                 kfree(roc);
2760                 return ret;
2761         }
2762
2763         roc->started = true;
2764         goto out_queue;
2765
2766  out_check_combine:
2767         list_for_each_entry(tmp, &local->roc_list, list) {
2768                 if (tmp->chan != channel || tmp->sdata != sdata)
2769                         continue;
2770
2771                 /*
2772                  * Extend this ROC if possible:
2773                  *
2774                  * If it hasn't started yet, just increase the duration
2775                  * and add the new one to the list of dependents.
2776                  * If the type of the new ROC has higher priority, modify the
2777                  * type of the previous one to match that of the new one.
2778                  */
2779                 if (!tmp->started) {
2780                         list_add_tail(&roc->list, &tmp->dependents);
2781                         tmp->duration = max(tmp->duration, roc->duration);
2782                         tmp->type = max(tmp->type, roc->type);
2783                         queued = true;
2784                         break;
2785                 }
2786
2787                 /* If it has already started, it's more difficult ... */
2788                 if (local->ops->remain_on_channel) {
2789                         unsigned long j = jiffies;
2790
2791                         /*
2792                          * In the offloaded ROC case, if it hasn't begun, add
2793                          * this new one to the dependent list to be handled
2794                          * when the master one begins. If it has begun,
2795                          * check that there's still a minimum time left and
2796                          * if so, start this one, transmitting the frame, but
2797                          * add it to the list directly after this one with
2798                          * a reduced time so we'll ask the driver to execute
2799                          * it right after finishing the previous one, in the
2800                          * hope that it'll also be executed right afterwards,
2801                          * effectively extending the old one.
2802                          * If there's no minimum time left, just add it to the
2803                          * normal list.
2804                          * TODO: the ROC type is ignored here, assuming that it
2805                          * is better to immediately use the current ROC.
2806                          */
2807                         if (!tmp->hw_begun) {
2808                                 list_add_tail(&roc->list, &tmp->dependents);
2809                                 queued = true;
2810                                 break;
2811                         }
2812
2813                         if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2814                                         tmp->hw_start_time +
2815                                         msecs_to_jiffies(tmp->duration))) {
2816                                 int new_dur;
2817
2818                                 ieee80211_handle_roc_started(roc);
2819
2820                                 new_dur = roc->duration -
2821                                           jiffies_to_msecs(tmp->hw_start_time +
2822                                                            msecs_to_jiffies(
2823                                                                 tmp->duration) -
2824                                                            j);
2825
2826                                 if (new_dur > 0) {
2827                                         /* add right after tmp */
2828                                         list_add(&roc->list, &tmp->list);
2829                                 } else {
2830                                         list_add_tail(&roc->list,
2831                                                       &tmp->dependents);
2832                                 }
2833                                 queued = true;
2834                         }
2835                 } else if (del_timer_sync(&tmp->work.timer)) {
2836                         unsigned long new_end;
2837
2838                         /*
2839                          * In the software ROC case, cancel the timer, if
2840                          * that fails then the finish work is already
2841                          * queued/pending and thus we queue the new ROC
2842                          * normally, if that succeeds then we can extend
2843                          * the timer duration and TX the frame (if any.)
2844                          */
2845
2846                         list_add_tail(&roc->list, &tmp->dependents);
2847                         queued = true;
2848
2849                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2850
2851                         /* ok, it was started & we canceled timer */
2852                         if (time_after(new_end, tmp->work.timer.expires))
2853                                 mod_timer(&tmp->work.timer, new_end);
2854                         else
2855                                 add_timer(&tmp->work.timer);
2856
2857                         ieee80211_handle_roc_started(roc);
2858                 }
2859                 break;
2860         }
2861
2862  out_queue:
2863         if (!queued)
2864                 list_add_tail(&roc->list, &local->roc_list);
2865
2866         return 0;
2867 }
2868
2869 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2870                                        struct wireless_dev *wdev,
2871                                        struct ieee80211_channel *chan,
2872                                        unsigned int duration,
2873                                        u64 *cookie)
2874 {
2875         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2876         struct ieee80211_local *local = sdata->local;
2877         int ret;
2878
2879         mutex_lock(&local->mtx);
2880         ret = ieee80211_start_roc_work(local, sdata, chan,
2881                                        duration, cookie, NULL,
2882                                        IEEE80211_ROC_TYPE_NORMAL);
2883         mutex_unlock(&local->mtx);
2884
2885         return ret;
2886 }
2887
2888 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2889                                 u64 cookie, bool mgmt_tx)
2890 {
2891         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2892         int ret;
2893
2894         mutex_lock(&local->mtx);
2895         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2896                 struct ieee80211_roc_work *dep, *tmp2;
2897
2898                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2899                         if (!mgmt_tx && dep->cookie != cookie)
2900                                 continue;
2901                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2902                                 continue;
2903                         /* found dependent item -- just remove it */
2904                         list_del(&dep->list);
2905                         mutex_unlock(&local->mtx);
2906
2907                         ieee80211_roc_notify_destroy(dep, true);
2908                         return 0;
2909                 }
2910
2911                 if (!mgmt_tx && roc->cookie != cookie)
2912                         continue;
2913                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2914                         continue;
2915
2916                 found = roc;
2917                 break;
2918         }
2919
2920         if (!found) {
2921                 mutex_unlock(&local->mtx);
2922                 return -ENOENT;
2923         }
2924
2925         /*
2926          * We found the item to cancel, so do that. Note that it
2927          * may have dependents, which we also cancel (and send
2928          * the expired signal for.) Not doing so would be quite
2929          * tricky here, but we may need to fix it later.
2930          */
2931
2932         if (local->ops->remain_on_channel) {
2933                 if (found->started) {
2934                         ret = drv_cancel_remain_on_channel(local);
2935                         if (WARN_ON_ONCE(ret)) {
2936                                 mutex_unlock(&local->mtx);
2937                                 return ret;
2938                         }
2939                 }
2940
2941                 list_del(&found->list);
2942
2943                 if (found->started)
2944                         ieee80211_start_next_roc(local);
2945                 mutex_unlock(&local->mtx);
2946
2947                 ieee80211_roc_notify_destroy(found, true);
2948         } else {
2949                 /* work may be pending so use it all the time */
2950                 found->abort = true;
2951                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2952
2953                 mutex_unlock(&local->mtx);
2954
2955                 /* work will clean up etc */
2956                 flush_delayed_work(&found->work);
2957                 WARN_ON(!found->to_be_freed);
2958                 kfree(found);
2959         }
2960
2961         return 0;
2962 }
2963
2964 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2965                                               struct wireless_dev *wdev,
2966                                               u64 cookie)
2967 {
2968         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2969         struct ieee80211_local *local = sdata->local;
2970
2971         return ieee80211_cancel_roc(local, cookie, false);
2972 }
2973
2974 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2975                                            struct net_device *dev,
2976                                            struct cfg80211_chan_def *chandef,
2977                                            u32 cac_time_ms)
2978 {
2979         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2980         struct ieee80211_local *local = sdata->local;
2981         int err;
2982
2983         mutex_lock(&local->mtx);
2984         if (!list_empty(&local->roc_list) || local->scanning) {
2985                 err = -EBUSY;
2986                 goto out_unlock;
2987         }
2988
2989         /* whatever, but channel contexts should not complain about that one */
2990         sdata->smps_mode = IEEE80211_SMPS_OFF;
2991         sdata->needed_rx_chains = local->rx_chains;
2992
2993         err = ieee80211_vif_use_channel(sdata, chandef,
2994                                         IEEE80211_CHANCTX_SHARED);
2995         if (err)
2996                 goto out_unlock;
2997
2998         ieee80211_queue_delayed_work(&sdata->local->hw,
2999                                      &sdata->dfs_cac_timer_work,
3000                                      msecs_to_jiffies(cac_time_ms));
3001
3002  out_unlock:
3003         mutex_unlock(&local->mtx);
3004         return err;
3005 }
3006
3007 static struct cfg80211_beacon_data *
3008 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
3009 {
3010         struct cfg80211_beacon_data *new_beacon;
3011         u8 *pos;
3012         int len;
3013
3014         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
3015               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
3016               beacon->probe_resp_len;
3017
3018         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
3019         if (!new_beacon)
3020                 return NULL;
3021
3022         pos = (u8 *)(new_beacon + 1);
3023         if (beacon->head_len) {
3024                 new_beacon->head_len = beacon->head_len;
3025                 new_beacon->head = pos;
3026                 memcpy(pos, beacon->head, beacon->head_len);
3027                 pos += beacon->head_len;
3028         }
3029         if (beacon->tail_len) {
3030                 new_beacon->tail_len = beacon->tail_len;
3031                 new_beacon->tail = pos;
3032                 memcpy(pos, beacon->tail, beacon->tail_len);
3033                 pos += beacon->tail_len;
3034         }
3035         if (beacon->beacon_ies_len) {
3036                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
3037                 new_beacon->beacon_ies = pos;
3038                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
3039                 pos += beacon->beacon_ies_len;
3040         }
3041         if (beacon->proberesp_ies_len) {
3042                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
3043                 new_beacon->proberesp_ies = pos;
3044                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
3045                 pos += beacon->proberesp_ies_len;
3046         }
3047         if (beacon->assocresp_ies_len) {
3048                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
3049                 new_beacon->assocresp_ies = pos;
3050                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
3051                 pos += beacon->assocresp_ies_len;
3052         }
3053         if (beacon->probe_resp_len) {
3054                 new_beacon->probe_resp_len = beacon->probe_resp_len;
3055                 beacon->probe_resp = pos;
3056                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
3057                 pos += beacon->probe_resp_len;
3058         }
3059
3060         return new_beacon;
3061 }
3062
3063 void ieee80211_csa_finish(struct ieee80211_vif *vif)
3064 {
3065         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3066
3067         ieee80211_queue_work(&sdata->local->hw,
3068                              &sdata->csa_finalize_work);
3069 }
3070 EXPORT_SYMBOL(ieee80211_csa_finish);
3071
3072 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
3073                                           u32 *changed)
3074 {
3075         int err;
3076
3077         switch (sdata->vif.type) {
3078         case NL80211_IFTYPE_AP:
3079                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon);
3080                 kfree(sdata->u.ap.next_beacon);
3081                 sdata->u.ap.next_beacon = NULL;
3082
3083                 if (err < 0)
3084                         return err;
3085                 *changed |= err;
3086                 break;
3087         case NL80211_IFTYPE_ADHOC:
3088                 err = ieee80211_ibss_finish_csa(sdata);
3089                 if (err < 0)
3090                         return err;
3091                 *changed |= err;
3092                 break;
3093 #ifdef CONFIG_MAC80211_MESH
3094         case NL80211_IFTYPE_MESH_POINT:
3095                 err = ieee80211_mesh_finish_csa(sdata);
3096                 if (err < 0)
3097                         return err;
3098                 *changed |= err;
3099                 break;
3100 #endif
3101         default:
3102                 WARN_ON(1);
3103                 return -EINVAL;
3104         }
3105
3106         return 0;
3107 }
3108
3109 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3110 {
3111         struct ieee80211_local *local = sdata->local;
3112         u32 changed = 0;
3113         int err;
3114
3115         sdata_assert_lock(sdata);
3116         lockdep_assert_held(&local->mtx);
3117
3118         sdata->radar_required = sdata->csa_radar_required;
3119         err = ieee80211_vif_change_channel(sdata, &changed);
3120         if (err < 0)
3121                 return err;
3122
3123         if (!local->use_chanctx) {
3124                 local->_oper_chandef = sdata->csa_chandef;
3125                 ieee80211_hw_config(local, 0);
3126         }
3127
3128         sdata->vif.csa_active = false;
3129
3130         err = ieee80211_set_after_csa_beacon(sdata, &changed);
3131         if (err)
3132                 return err;
3133
3134         ieee80211_bss_info_change_notify(sdata, changed);
3135         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3136
3137         if (!ieee80211_csa_needs_block_tx(local))
3138                 ieee80211_wake_queues_by_reason(&local->hw,
3139                                         IEEE80211_MAX_QUEUE_MAP,
3140                                         IEEE80211_QUEUE_STOP_REASON_CSA);
3141
3142         return 0;
3143 }
3144
3145 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3146 {
3147         if (__ieee80211_csa_finalize(sdata)) {
3148                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3149                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3150                                     GFP_KERNEL);
3151         }
3152 }
3153
3154 void ieee80211_csa_finalize_work(struct work_struct *work)
3155 {
3156         struct ieee80211_sub_if_data *sdata =
3157                 container_of(work, struct ieee80211_sub_if_data,
3158                              csa_finalize_work);
3159         struct ieee80211_local *local = sdata->local;
3160
3161         sdata_lock(sdata);
3162         mutex_lock(&local->mtx);
3163
3164         /* AP might have been stopped while waiting for the lock. */
3165         if (!sdata->vif.csa_active)
3166                 goto unlock;
3167
3168         if (!ieee80211_sdata_running(sdata))
3169                 goto unlock;
3170
3171         ieee80211_csa_finalize(sdata);
3172
3173 unlock:
3174         mutex_unlock(&local->mtx);
3175         sdata_unlock(sdata);
3176 }
3177
3178 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3179                                     struct cfg80211_csa_settings *params,
3180                                     u32 *changed)
3181 {
3182         int err;
3183
3184         switch (sdata->vif.type) {
3185         case NL80211_IFTYPE_AP:
3186                 sdata->u.ap.next_beacon =
3187                         cfg80211_beacon_dup(&params->beacon_after);
3188                 if (!sdata->u.ap.next_beacon)
3189                         return -ENOMEM;
3190
3191                 /*
3192                  * With a count of 0, we don't have to wait for any
3193                  * TBTT before switching, so complete the CSA
3194                  * immediately.  In theory, with a count == 1 we
3195                  * should delay the switch until just before the next
3196                  * TBTT, but that would complicate things so we switch
3197                  * immediately too.  If we would delay the switch
3198                  * until the next TBTT, we would have to set the probe
3199                  * response here.
3200                  *
3201                  * TODO: A channel switch with count <= 1 without
3202                  * sending a CSA action frame is kind of useless,
3203                  * because the clients won't know we're changing
3204                  * channels.  The action frame must be implemented
3205                  * either here or in the userspace.
3206                  */
3207                 if (params->count <= 1)
3208                         break;
3209
3210                 if ((params->n_counter_offsets_beacon >
3211                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3212                     (params->n_counter_offsets_presp >
3213                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3214                         return -EINVAL;
3215
3216                 /* make sure we don't have garbage in other counters */
3217                 memset(sdata->csa_counter_offset_beacon, 0,
3218                        sizeof(sdata->csa_counter_offset_beacon));
3219                 memset(sdata->csa_counter_offset_presp, 0,
3220                        sizeof(sdata->csa_counter_offset_presp));
3221
3222                 memcpy(sdata->csa_counter_offset_beacon,
3223                        params->counter_offsets_beacon,
3224                        params->n_counter_offsets_beacon * sizeof(u16));
3225                 memcpy(sdata->csa_counter_offset_presp,
3226                        params->counter_offsets_presp,
3227                        params->n_counter_offsets_presp * sizeof(u16));
3228
3229                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa);
3230                 if (err < 0) {
3231                         kfree(sdata->u.ap.next_beacon);
3232                         return err;
3233                 }
3234                 *changed |= err;
3235
3236                 break;
3237         case NL80211_IFTYPE_ADHOC:
3238                 if (!sdata->vif.bss_conf.ibss_joined)
3239                         return -EINVAL;
3240
3241                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3242                         return -EINVAL;
3243
3244                 switch (params->chandef.width) {
3245                 case NL80211_CHAN_WIDTH_40:
3246                         if (cfg80211_get_chandef_type(&params->chandef) !=
3247                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3248                                 return -EINVAL;
3249                 case NL80211_CHAN_WIDTH_5:
3250                 case NL80211_CHAN_WIDTH_10:
3251                 case NL80211_CHAN_WIDTH_20_NOHT:
3252                 case NL80211_CHAN_WIDTH_20:
3253                         break;
3254                 default:
3255                         return -EINVAL;
3256                 }
3257
3258                 /* changes into another band are not supported */
3259                 if (sdata->u.ibss.chandef.chan->band !=
3260                     params->chandef.chan->band)
3261                         return -EINVAL;
3262
3263                 /* see comments in the NL80211_IFTYPE_AP block */
3264                 if (params->count > 1) {
3265                         err = ieee80211_ibss_csa_beacon(sdata, params);
3266                         if (err < 0)
3267                                 return err;
3268                         *changed |= err;
3269                 }
3270
3271                 ieee80211_send_action_csa(sdata, params);
3272
3273                 break;
3274 #ifdef CONFIG_MAC80211_MESH
3275         case NL80211_IFTYPE_MESH_POINT: {
3276                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3277
3278                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3279                         return -EINVAL;
3280
3281                 /* changes into another band are not supported */
3282                 if (sdata->vif.bss_conf.chandef.chan->band !=
3283                     params->chandef.chan->band)
3284                         return -EINVAL;
3285
3286                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3287                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3288                         if (!ifmsh->pre_value)
3289                                 ifmsh->pre_value = 1;
3290                         else
3291                                 ifmsh->pre_value++;
3292                 }
3293
3294                 /* see comments in the NL80211_IFTYPE_AP block */
3295                 if (params->count > 1) {
3296                         err = ieee80211_mesh_csa_beacon(sdata, params);
3297                         if (err < 0) {
3298                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3299                                 return err;
3300                         }
3301                         *changed |= err;
3302                 }
3303
3304                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3305                         ieee80211_send_action_csa(sdata, params);
3306
3307                 break;
3308                 }
3309 #endif
3310         default:
3311                 return -EOPNOTSUPP;
3312         }
3313
3314         return 0;
3315 }
3316
3317 static int
3318 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3319                            struct cfg80211_csa_settings *params)
3320 {
3321         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3322         struct ieee80211_local *local = sdata->local;
3323         struct ieee80211_chanctx_conf *conf;
3324         struct ieee80211_chanctx *chanctx;
3325         int err, num_chanctx, changed = 0;
3326
3327         sdata_assert_lock(sdata);
3328         lockdep_assert_held(&local->mtx);
3329
3330         if (!list_empty(&local->roc_list) || local->scanning)
3331                 return -EBUSY;
3332
3333         if (sdata->wdev.cac_started)
3334                 return -EBUSY;
3335
3336         if (cfg80211_chandef_identical(&params->chandef,
3337                                        &sdata->vif.bss_conf.chandef))
3338                 return -EINVAL;
3339
3340         mutex_lock(&local->chanctx_mtx);
3341         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3342                                          lockdep_is_held(&local->chanctx_mtx));
3343         if (!conf) {
3344                 mutex_unlock(&local->chanctx_mtx);
3345                 return -EBUSY;
3346         }
3347
3348         /* don't handle for multi-VIF cases */
3349         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3350         if (ieee80211_chanctx_refcount(local, chanctx) > 1) {
3351                 mutex_unlock(&local->chanctx_mtx);
3352                 return -EBUSY;
3353         }
3354         num_chanctx = 0;
3355         list_for_each_entry_rcu(chanctx, &local->chanctx_list, list)
3356                 num_chanctx++;
3357         mutex_unlock(&local->chanctx_mtx);
3358
3359         if (num_chanctx > 1)
3360                 return -EBUSY;
3361
3362         /* don't allow another channel switch if one is already active. */
3363         if (sdata->vif.csa_active)
3364                 return -EBUSY;
3365
3366         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3367         if (err)
3368                 return err;
3369
3370         sdata->csa_radar_required = params->radar_required;
3371         sdata->csa_chandef = params->chandef;
3372         sdata->csa_block_tx = params->block_tx;
3373         sdata->csa_current_counter = params->count;
3374         sdata->vif.csa_active = true;
3375
3376         if (sdata->csa_block_tx)
3377                 ieee80211_stop_queues_by_reason(&local->hw,
3378                                         IEEE80211_MAX_QUEUE_MAP,
3379                                         IEEE80211_QUEUE_STOP_REASON_CSA);
3380
3381         if (changed) {
3382                 ieee80211_bss_info_change_notify(sdata, changed);
3383                 drv_channel_switch_beacon(sdata, &params->chandef);
3384         } else {
3385                 /* if the beacon didn't change, we can finalize immediately */
3386                 ieee80211_csa_finalize(sdata);
3387         }
3388
3389         return 0;
3390 }
3391
3392 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3393                              struct cfg80211_csa_settings *params)
3394 {
3395         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3396         struct ieee80211_local *local = sdata->local;
3397         int err;
3398
3399         mutex_lock(&local->mtx);
3400         err = __ieee80211_channel_switch(wiphy, dev, params);
3401         mutex_unlock(&local->mtx);
3402
3403         return err;
3404 }
3405
3406 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3407                              struct cfg80211_mgmt_tx_params *params,
3408                              u64 *cookie)
3409 {
3410         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3411         struct ieee80211_local *local = sdata->local;
3412         struct sk_buff *skb;
3413         struct sta_info *sta;
3414         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3415         bool need_offchan = false;
3416         u32 flags;
3417         int ret;
3418         u8 *data;
3419
3420         if (params->dont_wait_for_ack)
3421                 flags = IEEE80211_TX_CTL_NO_ACK;
3422         else
3423                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3424                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3425
3426         if (params->no_cck)
3427                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3428
3429         switch (sdata->vif.type) {
3430         case NL80211_IFTYPE_ADHOC:
3431                 if (!sdata->vif.bss_conf.ibss_joined)
3432                         need_offchan = true;
3433                 /* fall through */
3434 #ifdef CONFIG_MAC80211_MESH
3435         case NL80211_IFTYPE_MESH_POINT:
3436                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3437                     !sdata->u.mesh.mesh_id_len)
3438                         need_offchan = true;
3439                 /* fall through */
3440 #endif
3441         case NL80211_IFTYPE_AP:
3442         case NL80211_IFTYPE_AP_VLAN:
3443         case NL80211_IFTYPE_P2P_GO:
3444                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3445                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3446                     !rcu_access_pointer(sdata->bss->beacon))
3447                         need_offchan = true;
3448                 if (!ieee80211_is_action(mgmt->frame_control) ||
3449                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3450                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3451                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3452                         break;
3453                 rcu_read_lock();
3454                 sta = sta_info_get(sdata, mgmt->da);
3455                 rcu_read_unlock();
3456                 if (!sta)
3457                         return -ENOLINK;
3458                 break;
3459         case NL80211_IFTYPE_STATION:
3460         case NL80211_IFTYPE_P2P_CLIENT:
3461                 if (!sdata->u.mgd.associated)
3462                         need_offchan = true;
3463                 break;
3464         case NL80211_IFTYPE_P2P_DEVICE:
3465                 need_offchan = true;
3466                 break;
3467         default:
3468                 return -EOPNOTSUPP;
3469         }
3470
3471         /* configurations requiring offchan cannot work if no channel has been
3472          * specified
3473          */
3474         if (need_offchan && !params->chan)
3475                 return -EINVAL;
3476
3477         mutex_lock(&local->mtx);
3478
3479         /* Check if the operating channel is the requested channel */
3480         if (!need_offchan) {
3481                 struct ieee80211_chanctx_conf *chanctx_conf;
3482
3483                 rcu_read_lock();
3484                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3485
3486                 if (chanctx_conf) {
3487                         need_offchan = params->chan &&
3488                                        (params->chan !=
3489                                         chanctx_conf->def.chan);
3490                 } else if (!params->chan) {
3491                         ret = -EINVAL;
3492                         rcu_read_unlock();
3493                         goto out_unlock;
3494                 } else {
3495                         need_offchan = true;
3496                 }
3497                 rcu_read_unlock();
3498         }
3499
3500         if (need_offchan && !params->offchan) {
3501                 ret = -EBUSY;
3502                 goto out_unlock;
3503         }
3504
3505         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3506         if (!skb) {
3507                 ret = -ENOMEM;
3508                 goto out_unlock;
3509         }
3510         skb_reserve(skb, local->hw.extra_tx_headroom);
3511
3512         data = skb_put(skb, params->len);
3513         memcpy(data, params->buf, params->len);
3514
3515         /* Update CSA counters */
3516         if (sdata->vif.csa_active &&
3517             (sdata->vif.type == NL80211_IFTYPE_AP ||
3518              sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3519             params->n_csa_offsets) {
3520                 int i;
3521                 u8 c = sdata->csa_current_counter;
3522
3523                 for (i = 0; i < params->n_csa_offsets; i++)
3524                         data[params->csa_offsets[i]] = c;
3525         }
3526
3527         IEEE80211_SKB_CB(skb)->flags = flags;
3528
3529         skb->dev = sdata->dev;
3530
3531         if (!need_offchan) {
3532                 *cookie = (unsigned long) skb;
3533                 ieee80211_tx_skb(sdata, skb);
3534                 ret = 0;
3535                 goto out_unlock;
3536         }
3537
3538         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3539                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3540         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3541                 IEEE80211_SKB_CB(skb)->hw_queue =
3542                         local->hw.offchannel_tx_hw_queue;
3543
3544         /* This will handle all kinds of coalescing and immediate TX */
3545         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3546                                        params->wait, cookie, skb,
3547                                        IEEE80211_ROC_TYPE_MGMT_TX);
3548         if (ret)
3549                 kfree_skb(skb);
3550  out_unlock:
3551         mutex_unlock(&local->mtx);
3552         return ret;
3553 }
3554
3555 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3556                                          struct wireless_dev *wdev,
3557                                          u64 cookie)
3558 {
3559         struct ieee80211_local *local = wiphy_priv(wiphy);
3560
3561         return ieee80211_cancel_roc(local, cookie, true);
3562 }
3563
3564 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3565                                           struct wireless_dev *wdev,
3566                                           u16 frame_type, bool reg)
3567 {
3568         struct ieee80211_local *local = wiphy_priv(wiphy);
3569
3570         switch (frame_type) {
3571         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3572                 if (reg)
3573                         local->probe_req_reg++;
3574                 else
3575                         local->probe_req_reg--;
3576
3577                 if (!local->open_count)
3578                         break;
3579
3580                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3581                 break;
3582         default:
3583                 break;
3584         }
3585 }
3586
3587 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3588 {
3589         struct ieee80211_local *local = wiphy_priv(wiphy);
3590
3591         if (local->started)
3592                 return -EOPNOTSUPP;
3593
3594         return drv_set_antenna(local, tx_ant, rx_ant);
3595 }
3596
3597 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3598 {
3599         struct ieee80211_local *local = wiphy_priv(wiphy);
3600
3601         return drv_get_antenna(local, tx_ant, rx_ant);
3602 }
3603
3604 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
3605 {
3606         struct ieee80211_local *local = wiphy_priv(wiphy);
3607
3608         return drv_set_ringparam(local, tx, rx);
3609 }
3610
3611 static void ieee80211_get_ringparam(struct wiphy *wiphy,
3612                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
3613 {
3614         struct ieee80211_local *local = wiphy_priv(wiphy);
3615
3616         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
3617 }
3618
3619 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3620                                     struct net_device *dev,
3621                                     struct cfg80211_gtk_rekey_data *data)
3622 {
3623         struct ieee80211_local *local = wiphy_priv(wiphy);
3624         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3625
3626         if (!local->ops->set_rekey_data)
3627                 return -EOPNOTSUPP;
3628
3629         drv_set_rekey_data(local, sdata, data);
3630
3631         return 0;
3632 }
3633
3634 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3635                                   const u8 *peer, u64 *cookie)
3636 {
3637         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3638         struct ieee80211_local *local = sdata->local;
3639         struct ieee80211_qos_hdr *nullfunc;
3640         struct sk_buff *skb;
3641         int size = sizeof(*nullfunc);
3642         __le16 fc;
3643         bool qos;
3644         struct ieee80211_tx_info *info;
3645         struct sta_info *sta;
3646         struct ieee80211_chanctx_conf *chanctx_conf;
3647         enum ieee80211_band band;
3648
3649         rcu_read_lock();
3650         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3651         if (WARN_ON(!chanctx_conf)) {
3652                 rcu_read_unlock();
3653                 return -EINVAL;
3654         }
3655         band = chanctx_conf->def.chan->band;
3656         sta = sta_info_get_bss(sdata, peer);
3657         if (sta) {
3658                 qos = test_sta_flag(sta, WLAN_STA_WME);
3659         } else {
3660                 rcu_read_unlock();
3661                 return -ENOLINK;
3662         }
3663
3664         if (qos) {
3665                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3666                                  IEEE80211_STYPE_QOS_NULLFUNC |
3667                                  IEEE80211_FCTL_FROMDS);
3668         } else {
3669                 size -= 2;
3670                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3671                                  IEEE80211_STYPE_NULLFUNC |
3672                                  IEEE80211_FCTL_FROMDS);
3673         }
3674
3675         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3676         if (!skb) {
3677                 rcu_read_unlock();
3678                 return -ENOMEM;
3679         }
3680
3681         skb->dev = dev;
3682
3683         skb_reserve(skb, local->hw.extra_tx_headroom);
3684
3685         nullfunc = (void *) skb_put(skb, size);
3686         nullfunc->frame_control = fc;
3687         nullfunc->duration_id = 0;
3688         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3689         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3690         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3691         nullfunc->seq_ctrl = 0;
3692
3693         info = IEEE80211_SKB_CB(skb);
3694
3695         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3696                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3697
3698         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3699         skb->priority = 7;
3700         if (qos)
3701                 nullfunc->qos_ctrl = cpu_to_le16(7);
3702
3703         local_bh_disable();
3704         ieee80211_xmit(sdata, skb, band);
3705         local_bh_enable();
3706         rcu_read_unlock();
3707
3708         *cookie = (unsigned long) skb;
3709         return 0;
3710 }
3711
3712 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3713                                      struct wireless_dev *wdev,
3714                                      struct cfg80211_chan_def *chandef)
3715 {
3716         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3717         struct ieee80211_local *local = wiphy_priv(wiphy);
3718         struct ieee80211_chanctx_conf *chanctx_conf;
3719         int ret = -ENODATA;
3720
3721         rcu_read_lock();
3722         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3723         if (chanctx_conf) {
3724                 *chandef = chanctx_conf->def;
3725                 ret = 0;
3726         } else if (local->open_count > 0 &&
3727                    local->open_count == local->monitors &&
3728                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3729                 if (local->use_chanctx)
3730                         *chandef = local->monitor_chandef;
3731                 else
3732                         *chandef = local->_oper_chandef;
3733                 ret = 0;
3734         }
3735         rcu_read_unlock();
3736
3737         return ret;
3738 }
3739
3740 #ifdef CONFIG_PM
3741 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3742 {
3743         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3744 }
3745 #endif
3746
3747 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3748                                  struct net_device *dev,
3749                                  struct cfg80211_qos_map *qos_map)
3750 {
3751         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3752         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3753
3754         if (qos_map) {
3755                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3756                 if (!new_qos_map)
3757                         return -ENOMEM;
3758                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3759         } else {
3760                 /* A NULL qos_map was passed to disable QoS mapping */
3761                 new_qos_map = NULL;
3762         }
3763
3764         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3765         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3766         if (old_qos_map)
3767                 kfree_rcu(old_qos_map, rcu_head);
3768
3769         return 0;
3770 }
3771
3772 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3773                                       struct net_device *dev,
3774                                       struct cfg80211_chan_def *chandef)
3775 {
3776         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3777         int ret;
3778         u32 changed = 0;
3779
3780         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3781         if (ret == 0)
3782                 ieee80211_bss_info_change_notify(sdata, changed);
3783
3784         return ret;
3785 }
3786
3787 const struct cfg80211_ops mac80211_config_ops = {
3788         .add_virtual_intf = ieee80211_add_iface,
3789         .del_virtual_intf = ieee80211_del_iface,
3790         .change_virtual_intf = ieee80211_change_iface,
3791         .start_p2p_device = ieee80211_start_p2p_device,
3792         .stop_p2p_device = ieee80211_stop_p2p_device,
3793         .add_key = ieee80211_add_key,
3794         .del_key = ieee80211_del_key,
3795         .get_key = ieee80211_get_key,
3796         .set_default_key = ieee80211_config_default_key,
3797         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3798         .start_ap = ieee80211_start_ap,
3799         .change_beacon = ieee80211_change_beacon,
3800         .stop_ap = ieee80211_stop_ap,
3801         .add_station = ieee80211_add_station,
3802         .del_station = ieee80211_del_station,
3803         .change_station = ieee80211_change_station,
3804         .get_station = ieee80211_get_station,
3805         .dump_station = ieee80211_dump_station,
3806         .dump_survey = ieee80211_dump_survey,
3807 #ifdef CONFIG_MAC80211_MESH
3808         .add_mpath = ieee80211_add_mpath,
3809         .del_mpath = ieee80211_del_mpath,
3810         .change_mpath = ieee80211_change_mpath,
3811         .get_mpath = ieee80211_get_mpath,
3812         .dump_mpath = ieee80211_dump_mpath,
3813         .update_mesh_config = ieee80211_update_mesh_config,
3814         .get_mesh_config = ieee80211_get_mesh_config,
3815         .join_mesh = ieee80211_join_mesh,
3816         .leave_mesh = ieee80211_leave_mesh,
3817 #endif
3818         .change_bss = ieee80211_change_bss,
3819         .set_txq_params = ieee80211_set_txq_params,
3820         .set_monitor_channel = ieee80211_set_monitor_channel,
3821         .suspend = ieee80211_suspend,
3822         .resume = ieee80211_resume,
3823         .scan = ieee80211_scan,
3824         .sched_scan_start = ieee80211_sched_scan_start,
3825         .sched_scan_stop = ieee80211_sched_scan_stop,
3826         .auth = ieee80211_auth,
3827         .assoc = ieee80211_assoc,
3828         .deauth = ieee80211_deauth,
3829         .disassoc = ieee80211_disassoc,
3830         .join_ibss = ieee80211_join_ibss,
3831         .leave_ibss = ieee80211_leave_ibss,
3832         .set_mcast_rate = ieee80211_set_mcast_rate,
3833         .set_wiphy_params = ieee80211_set_wiphy_params,
3834         .set_tx_power = ieee80211_set_tx_power,
3835         .get_tx_power = ieee80211_get_tx_power,
3836         .set_wds_peer = ieee80211_set_wds_peer,
3837         .rfkill_poll = ieee80211_rfkill_poll,
3838         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3839         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3840         .set_power_mgmt = ieee80211_set_power_mgmt,
3841         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3842         .remain_on_channel = ieee80211_remain_on_channel,
3843         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3844         .mgmt_tx = ieee80211_mgmt_tx,
3845         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3846         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3847         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3848         .set_antenna = ieee80211_set_antenna,
3849         .get_antenna = ieee80211_get_antenna,
3850         .set_ringparam = ieee80211_set_ringparam,
3851         .get_ringparam = ieee80211_get_ringparam,
3852         .set_rekey_data = ieee80211_set_rekey_data,
3853         .tdls_oper = ieee80211_tdls_oper,
3854         .tdls_mgmt = ieee80211_tdls_mgmt,
3855         .probe_client = ieee80211_probe_client,
3856         .set_noack_map = ieee80211_set_noack_map,
3857 #ifdef CONFIG_PM
3858         .set_wakeup = ieee80211_set_wakeup,
3859 #endif
3860         .get_et_sset_count = ieee80211_get_et_sset_count,
3861         .get_et_stats = ieee80211_get_et_stats,
3862         .get_et_strings = ieee80211_get_et_strings,
3863         .get_channel = ieee80211_cfg_get_channel,
3864         .start_radar_detection = ieee80211_start_radar_detection,
3865         .channel_switch = ieee80211_channel_switch,
3866         .set_qos_map = ieee80211_set_qos_map,
3867         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3868 };