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 net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
  24                                               enum nl80211_iftype type,
  25                                               u32 *flags,
  26                                               struct vif_params *params)
  27 {
  28         struct ieee80211_local *local = wiphy_priv(wiphy);
  29         struct net_device *dev;
  30         struct ieee80211_sub_if_data *sdata;
  31         int err;
  32
  33         err = ieee80211_if_add(local, name, &dev, type, params);
  34         if (err)
  35                 return ERR_PTR(err);
  36
  37         if (type == NL80211_IFTYPE_MONITOR && flags) {
  38                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  39                 sdata->u.mntr_flags = *flags;
  40         }
  41
  42         return dev;
  43 }
  44
  45 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
  46 {
  47         ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
  48
  49         return 0;
  50 }
  51
  52 static int ieee80211_change_iface(struct wiphy *wiphy,
  53                                   struct net_device *dev,
  54                                   enum nl80211_iftype type, u32 *flags,
  55                                   struct vif_params *params)
  56 {
  57         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  58         int ret;
  59
  60         ret = ieee80211_if_change_type(sdata, type);
  61         if (ret)
  62                 return ret;
  63
  64         if (type == NL80211_IFTYPE_AP_VLAN &&
  65             params && params->use_4addr == 0)
  66                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  67         else if (type == NL80211_IFTYPE_STATION &&
  68                  params && params->use_4addr >= 0)
  69                 sdata->u.mgd.use_4addr = params->use_4addr;
  70
  71         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  72                 struct ieee80211_local *local = sdata->local;
  73
  74                 if (ieee80211_sdata_running(sdata)) {
  75                         /*
  76                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  77                          * changed while the interface is up.
  78                          * Else we would need to add a lot of cruft
  79                          * to update everything:
  80                          *      cooked_mntrs, monitor and all fif_* counters
  81                          *      reconfigure hardware
  82                          */
  83                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  84                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  85                                 return -EBUSY;
  86
  87                         ieee80211_adjust_monitor_flags(sdata, -1);
  88                         sdata->u.mntr_flags = *flags;
  89                         ieee80211_adjust_monitor_flags(sdata, 1);
  90
  91                         ieee80211_configure_filter(local);
  92                 } else {
  93                         /*
  94                          * Because the interface is down, ieee80211_do_stop
  95                          * and ieee80211_do_open take care of "everything"
  96                          * mentioned in the comment above.
  97                          */
  98                         sdata->u.mntr_flags = *flags;
  99                 }
 100         }
 101
 102         return 0;
 103 }
 104
 105 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 106                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 107                              struct key_params *params)
 108 {
 109         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 110         struct sta_info *sta = NULL;
 111         struct ieee80211_key *key;
 112         int err;
 113
 114         if (!ieee80211_sdata_running(sdata))
 115                 return -ENETDOWN;
 116
 117         /* reject WEP and TKIP keys if WEP failed to initialize */
 118         switch (params->cipher) {
 119         case WLAN_CIPHER_SUITE_WEP40:
 120         case WLAN_CIPHER_SUITE_TKIP:
 121         case WLAN_CIPHER_SUITE_WEP104:
 122                 if (IS_ERR(sdata->local->wep_tx_tfm))
 123                         return -EINVAL;
 124                 break;
 125         default:
 126                 break;
 127         }
 128
 129         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 130                                   params->key, params->seq_len, params->seq);
 131         if (IS_ERR(key))
 132                 return PTR_ERR(key);
 133
 134         if (pairwise)
 135                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 136
 137         mutex_lock(&sdata->local->sta_mtx);
 138
 139         if (mac_addr) {
 140                 if (ieee80211_vif_is_mesh(&sdata->vif))
 141                         sta = sta_info_get(sdata, mac_addr);
 142                 else
 143                         sta = sta_info_get_bss(sdata, mac_addr);
 144                 if (!sta) {
 145                         ieee80211_key_free(sdata->local, key);
 146                         err = -ENOENT;
 147                         goto out_unlock;
 148                 }
 149         }
 150
 151         err = ieee80211_key_link(key, sdata, sta);
 152         if (err)
 153                 ieee80211_key_free(sdata->local, key);
 154
 155  out_unlock:
 156         mutex_unlock(&sdata->local->sta_mtx);
 157
 158         return err;
 159 }
 160
 161 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 162                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 163 {
 164         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 165         struct ieee80211_local *local = sdata->local;
 166         struct sta_info *sta;
 167         struct ieee80211_key *key = NULL;
 168         int ret;
 169
 170         mutex_lock(&local->sta_mtx);
 171         mutex_lock(&local->key_mtx);
 172
 173         if (mac_addr) {
 174                 ret = -ENOENT;
 175
 176                 sta = sta_info_get_bss(sdata, mac_addr);
 177                 if (!sta)
 178                         goto out_unlock;
 179
 180                 if (pairwise)
 181                         key = key_mtx_dereference(local, sta->ptk);
 182                 else
 183                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 184         } else
 185                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 186
 187         if (!key) {
 188                 ret = -ENOENT;
 189                 goto out_unlock;
 190         }
 191
 192         __ieee80211_key_free(key);
 193
 194         ret = 0;
 195  out_unlock:
 196         mutex_unlock(&local->key_mtx);
 197         mutex_unlock(&local->sta_mtx);
 198
 199         return ret;
 200 }
 201
 202 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 203                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 204                              void *cookie,
 205                              void (*callback)(void *cookie,
 206                                               struct key_params *params))
 207 {
 208         struct ieee80211_sub_if_data *sdata;
 209         struct sta_info *sta = NULL;
 210         u8 seq[6] = {0};
 211         struct key_params params;
 212         struct ieee80211_key *key = NULL;
 213         u64 pn64;
 214         u32 iv32;
 215         u16 iv16;
 216         int err = -ENOENT;
 217
 218         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 219
 220         rcu_read_lock();
 221
 222         if (mac_addr) {
 223                 sta = sta_info_get_bss(sdata, mac_addr);
 224                 if (!sta)
 225                         goto out;
 226
 227                 if (pairwise)
 228                         key = rcu_dereference(sta->ptk);
 229                 else if (key_idx < NUM_DEFAULT_KEYS)
 230                         key = rcu_dereference(sta->gtk[key_idx]);
 231         } else
 232                 key = rcu_dereference(sdata->keys[key_idx]);
 233
 234         if (!key)
 235                 goto out;
 236
 237         memset(&params, 0, sizeof(params));
 238
 239         params.cipher = key->conf.cipher;
 240
 241         switch (key->conf.cipher) {
 242         case WLAN_CIPHER_SUITE_TKIP:
 243                 iv32 = key->u.tkip.tx.iv32;
 244                 iv16 = key->u.tkip.tx.iv16;
 245
 246                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 247                         drv_get_tkip_seq(sdata->local,
 248                                          key->conf.hw_key_idx,
 249                                          &iv32, &iv16);
 250
 251                 seq[0] = iv16 & 0xff;
 252                 seq[1] = (iv16 >> 8) & 0xff;
 253                 seq[2] = iv32 & 0xff;
 254                 seq[3] = (iv32 >> 8) & 0xff;
 255                 seq[4] = (iv32 >> 16) & 0xff;
 256                 seq[5] = (iv32 >> 24) & 0xff;
 257                 params.seq = seq;
 258                 params.seq_len = 6;
 259                 break;
 260         case WLAN_CIPHER_SUITE_CCMP:
 261                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 262                 seq[0] = pn64;
 263                 seq[1] = pn64 >> 8;
 264                 seq[2] = pn64 >> 16;
 265                 seq[3] = pn64 >> 24;
 266                 seq[4] = pn64 >> 32;
 267                 seq[5] = pn64 >> 40;
 268                 params.seq = seq;
 269                 params.seq_len = 6;
 270                 break;
 271         case WLAN_CIPHER_SUITE_AES_CMAC:
 272                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 273                 seq[0] = pn64;
 274                 seq[1] = pn64 >> 8;
 275                 seq[2] = pn64 >> 16;
 276                 seq[3] = pn64 >> 24;
 277                 seq[4] = pn64 >> 32;
 278                 seq[5] = pn64 >> 40;
 279                 params.seq = seq;
 280                 params.seq_len = 6;
 281                 break;
 282         }
 283
 284         params.key = key->conf.key;
 285         params.key_len = key->conf.keylen;
 286
 287         callback(cookie, &params);
 288         err = 0;
 289
 290  out:
 291         rcu_read_unlock();
 292         return err;
 293 }
 294
 295 static int ieee80211_config_default_key(struct wiphy *wiphy,
 296                                         struct net_device *dev,
 297                                         u8 key_idx, bool uni,
 298                                         bool multi)
 299 {
 300         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 301
 302         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 303
 304         return 0;
 305 }
 306
 307 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 308                                              struct net_device *dev,
 309                                              u8 key_idx)
 310 {
 311         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 312
 313         ieee80211_set_default_mgmt_key(sdata, key_idx);
 314
 315         return 0;
 316 }
 317
 318 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
 319 {
 320         if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
 321                 struct ieee80211_supported_band *sband;
 322                 sband = sta->local->hw.wiphy->bands[
 323                                 sta->local->hw.conf.channel->band];
 324                 rate->legacy = sband->bitrates[idx].bitrate;
 325         } else
 326                 rate->mcs = idx;
 327 }
 328
 329 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 330 {
 331         struct ieee80211_sub_if_data *sdata = sta->sdata;
 332         struct timespec uptime;
 333
 334         sinfo->generation = sdata->local->sta_generation;
 335
 336         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 337                         STATION_INFO_RX_BYTES |
 338                         STATION_INFO_TX_BYTES |
 339                         STATION_INFO_RX_PACKETS |
 340                         STATION_INFO_TX_PACKETS |
 341                         STATION_INFO_TX_RETRIES |
 342                         STATION_INFO_TX_FAILED |
 343                         STATION_INFO_TX_BITRATE |
 344                         STATION_INFO_RX_BITRATE |
 345                         STATION_INFO_RX_DROP_MISC |
 346                         STATION_INFO_BSS_PARAM |
 347                         STATION_INFO_CONNECTED_TIME |
 348                         STATION_INFO_STA_FLAGS;
 349
 350         do_posix_clock_monotonic_gettime(&uptime);
 351         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 352
 353         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 354         sinfo->rx_bytes = sta->rx_bytes;
 355         sinfo->tx_bytes = sta->tx_bytes;
 356         sinfo->rx_packets = sta->rx_packets;
 357         sinfo->tx_packets = sta->tx_packets;
 358         sinfo->tx_retries = sta->tx_retry_count;
 359         sinfo->tx_failed = sta->tx_retry_failed;
 360         sinfo->rx_dropped_misc = sta->rx_dropped;
 361
 362         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 363             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 364                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 365                 sinfo->signal = (s8)sta->last_signal;
 366                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 367         }
 368
 369         sinfo->txrate.flags = 0;
 370         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 371                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 372         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 373                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 374         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 375                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 376         rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx);
 377
 378         sinfo->rxrate.flags = 0;
 379         if (sta->last_rx_rate_flag & RX_FLAG_HT)
 380                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
 381         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 382                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 383         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 384                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 385         rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
 386
 387         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 388 #ifdef CONFIG_MAC80211_MESH
 389                 sinfo->filled |= STATION_INFO_LLID |
 390                                  STATION_INFO_PLID |
 391                                  STATION_INFO_PLINK_STATE;
 392
 393                 sinfo->llid = le16_to_cpu(sta->llid);
 394                 sinfo->plid = le16_to_cpu(sta->plid);
 395                 sinfo->plink_state = sta->plink_state;
 396 #endif
 397         }
 398
 399         sinfo->bss_param.flags = 0;
 400         if (sdata->vif.bss_conf.use_cts_prot)
 401                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 402         if (sdata->vif.bss_conf.use_short_preamble)
 403                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 404         if (sdata->vif.bss_conf.use_short_slot)
 405                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 406         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 407         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 408
 409         sinfo->sta_flags.set = 0;
 410         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 411                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 412                                 BIT(NL80211_STA_FLAG_WME) |
 413                                 BIT(NL80211_STA_FLAG_MFP) |
 414                                 BIT(NL80211_STA_FLAG_AUTHENTICATED);
 415         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 416                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 417         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 418                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 419         if (test_sta_flag(sta, WLAN_STA_WME))
 420                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 421         if (test_sta_flag(sta, WLAN_STA_MFP))
 422                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 423         if (test_sta_flag(sta, WLAN_STA_AUTH))
 424                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 425 }
 426
 427
 428 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 429                                  int idx, u8 *mac, struct station_info *sinfo)
 430 {
 431         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 432         struct sta_info *sta;
 433         int ret = -ENOENT;
 434
 435         rcu_read_lock();
 436
 437         sta = sta_info_get_by_idx(sdata, idx);
 438         if (sta) {
 439                 ret = 0;
 440                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 441                 sta_set_sinfo(sta, sinfo);
 442         }
 443
 444         rcu_read_unlock();
 445
 446         return ret;
 447 }
 448
 449 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 450                                  int idx, struct survey_info *survey)
 451 {
 452         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 453
 454         return drv_get_survey(local, idx, survey);
 455 }
 456
 457 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 458                                  u8 *mac, struct station_info *sinfo)
 459 {
 460         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 461         struct sta_info *sta;
 462         int ret = -ENOENT;
 463
 464         rcu_read_lock();
 465
 466         sta = sta_info_get_bss(sdata, mac);
 467         if (sta) {
 468                 ret = 0;
 469                 sta_set_sinfo(sta, sinfo);
 470         }
 471
 472         rcu_read_unlock();
 473
 474         return ret;
 475 }
 476
 477 static void ieee80211_config_ap_ssid(struct ieee80211_sub_if_data *sdata,
 478                                      struct beacon_parameters *params)
 479 {
 480         struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
 481
 482         bss_conf->ssid_len = params->ssid_len;
 483
 484         if (params->ssid_len)
 485                 memcpy(bss_conf->ssid, params->ssid, params->ssid_len);
 486
 487         bss_conf->hidden_ssid =
 488                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 489 }
 490
 491 /*
 492  * This handles both adding a beacon and setting new beacon info
 493  */
 494 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 495                                    struct beacon_parameters *params)
 496 {
 497         struct beacon_data *new, *old;
 498         int new_head_len, new_tail_len;
 499         int size;
 500         int err = -EINVAL;
 501
 502         old = rtnl_dereference(sdata->u.ap.beacon);
 503
 504         /* head must not be zero-length */
 505         if (params->head && !params->head_len)
 506                 return -EINVAL;
 507
 508         /*
 509          * This is a kludge. beacon interval should really be part
 510          * of the beacon information.
 511          */
 512         if (params->interval &&
 513             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 514                 sdata->vif.bss_conf.beacon_int = params->interval;
 515                 ieee80211_bss_info_change_notify(sdata,
 516                                                  BSS_CHANGED_BEACON_INT);
 517         }
 518
 519         /* Need to have a beacon head if we don't have one yet */
 520         if (!params->head && !old)
 521                 return err;
 522
 523         /* sorry, no way to start beaconing without dtim period */
 524         if (!params->dtim_period && !old)
 525                 return err;
 526
 527         /* new or old head? */
 528         if (params->head)
 529                 new_head_len = params->head_len;
 530         else
 531                 new_head_len = old->head_len;
 532
 533         /* new or old tail? */
 534         if (params->tail || !old)
 535                 /* params->tail_len will be zero for !params->tail */
 536                 new_tail_len = params->tail_len;
 537         else
 538                 new_tail_len = old->tail_len;
 539
 540         size = sizeof(*new) + new_head_len + new_tail_len;
 541
 542         new = kzalloc(size, GFP_KERNEL);
 543         if (!new)
 544                 return -ENOMEM;
 545
 546         /* start filling the new info now */
 547
 548         /* new or old dtim period? */
 549         if (params->dtim_period)
 550                 new->dtim_period = params->dtim_period;
 551         else
 552                 new->dtim_period = old->dtim_period;
 553
 554         /*
 555          * pointers go into the block we allocated,
 556          * memory is | beacon_data | head | tail |
 557          */
 558         new->head = ((u8 *) new) + sizeof(*new);
 559         new->tail = new->head + new_head_len;
 560         new->head_len = new_head_len;
 561         new->tail_len = new_tail_len;
 562
 563         /* copy in head */
 564         if (params->head)
 565                 memcpy(new->head, params->head, new_head_len);
 566         else
 567                 memcpy(new->head, old->head, new_head_len);
 568
 569         /* copy in optional tail */
 570         if (params->tail)
 571                 memcpy(new->tail, params->tail, new_tail_len);
 572         else
 573                 if (old)
 574                         memcpy(new->tail, old->tail, new_tail_len);
 575
 576         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 577
 578         rcu_assign_pointer(sdata->u.ap.beacon, new);
 579
 580         synchronize_rcu();
 581
 582         kfree(old);
 583
 584         ieee80211_config_ap_ssid(sdata, params);
 585
 586         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
 587                                                 BSS_CHANGED_BEACON |
 588                                                 BSS_CHANGED_SSID);
 589         return 0;
 590 }
 591
 592 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 593                                 struct beacon_parameters *params)
 594 {
 595         struct ieee80211_sub_if_data *sdata;
 596         struct beacon_data *old;
 597
 598         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 599
 600         old = rtnl_dereference(sdata->u.ap.beacon);
 601         if (old)
 602                 return -EALREADY;
 603
 604         return ieee80211_config_beacon(sdata, params);
 605 }
 606
 607 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 608                                 struct beacon_parameters *params)
 609 {
 610         struct ieee80211_sub_if_data *sdata;
 611         struct beacon_data *old;
 612
 613         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 614
 615         old = rtnl_dereference(sdata->u.ap.beacon);
 616         if (!old)
 617                 return -ENOENT;
 618
 619         return ieee80211_config_beacon(sdata, params);
 620 }
 621
 622 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 623 {
 624         struct ieee80211_sub_if_data *sdata;
 625         struct beacon_data *old;
 626
 627         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 628
 629         old = rtnl_dereference(sdata->u.ap.beacon);
 630         if (!old)
 631                 return -ENOENT;
 632
 633         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 634         synchronize_rcu();
 635         kfree(old);
 636
 637         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 638         return 0;
 639 }
 640
 641 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 642 struct iapp_layer2_update {
 643         u8 da[ETH_ALEN];        /* broadcast */
 644         u8 sa[ETH_ALEN];        /* STA addr */
 645         __be16 len;             /* 6 */
 646         u8 dsap;                /* 0 */
 647         u8 ssap;                /* 0 */
 648         u8 control;
 649         u8 xid_info[3];
 650 } __packed;
 651
 652 static void ieee80211_send_layer2_update(struct sta_info *sta)
 653 {
 654         struct iapp_layer2_update *msg;
 655         struct sk_buff *skb;
 656
 657         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 658          * bridge devices */
 659
 660         skb = dev_alloc_skb(sizeof(*msg));
 661         if (!skb)
 662                 return;
 663         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 664
 665         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 666          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 667
 668         memset(msg->da, 0xff, ETH_ALEN);
 669         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 670         msg->len = htons(6);
 671         msg->dsap = 0;
 672         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 673         msg->control = 0xaf;    /* XID response lsb.1111F101.
 674                                  * F=0 (no poll command; unsolicited frame) */
 675         msg->xid_info[0] = 0x81;        /* XID format identifier */
 676         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 677         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 678
 679         skb->dev = sta->sdata->dev;
 680         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 681         memset(skb->cb, 0, sizeof(skb->cb));
 682         netif_rx_ni(skb);
 683 }
 684
 685 static void sta_apply_parameters(struct ieee80211_local *local,
 686                                  struct sta_info *sta,
 687                                  struct station_parameters *params)
 688 {
 689         u32 rates;
 690         int i, j;
 691         struct ieee80211_supported_band *sband;
 692         struct ieee80211_sub_if_data *sdata = sta->sdata;
 693         u32 mask, set;
 694
 695         sband = local->hw.wiphy->bands[local->oper_channel->band];
 696
 697         mask = params->sta_flags_mask;
 698         set = params->sta_flags_set;
 699
 700         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 701                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 702                         set_sta_flag(sta, WLAN_STA_AUTHORIZED);
 703                 else
 704                         clear_sta_flag(sta, WLAN_STA_AUTHORIZED);
 705         }
 706
 707         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 708                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 709                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
 710                 else
 711                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
 712         }
 713
 714         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 715                 if (set & BIT(NL80211_STA_FLAG_WME)) {
 716                         set_sta_flag(sta, WLAN_STA_WME);
 717                         sta->sta.wme = true;
 718                 } else {
 719                         clear_sta_flag(sta, WLAN_STA_WME);
 720                         sta->sta.wme = false;
 721                 }
 722         }
 723
 724         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 725                 if (set & BIT(NL80211_STA_FLAG_MFP))
 726                         set_sta_flag(sta, WLAN_STA_MFP);
 727                 else
 728                         clear_sta_flag(sta, WLAN_STA_MFP);
 729         }
 730
 731         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 732                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
 733                         set_sta_flag(sta, WLAN_STA_AUTH);
 734                 else
 735                         clear_sta_flag(sta, WLAN_STA_AUTH);
 736         }
 737
 738         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
 739                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
 740                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
 741                 else
 742                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
 743         }
 744
 745         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
 746                 sta->sta.uapsd_queues = params->uapsd_queues;
 747                 sta->sta.max_sp = params->max_sp;
 748         }
 749
 750         /*
 751          * cfg80211 validates this (1-2007) and allows setting the AID
 752          * only when creating a new station entry
 753          */
 754         if (params->aid)
 755                 sta->sta.aid = params->aid;
 756
 757         /*
 758          * FIXME: updating the following information is racy when this
 759          *        function is called from ieee80211_change_station().
 760          *        However, all this information should be static so
 761          *        maybe we should just reject attemps to change it.
 762          */
 763
 764         if (params->listen_interval >= 0)
 765                 sta->listen_interval = params->listen_interval;
 766
 767         if (params->supported_rates) {
 768                 rates = 0;
 769
 770                 for (i = 0; i < params->supported_rates_len; i++) {
 771                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 772                         for (j = 0; j < sband->n_bitrates; j++) {
 773                                 if (sband->bitrates[j].bitrate == rate)
 774                                         rates |= BIT(j);
 775                         }
 776                 }
 777                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 778         }
 779
 780         if (params->ht_capa)
 781                 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
 782                                                   params->ht_capa,
 783                                                   &sta->sta.ht_cap);
 784
 785         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 786 #ifdef CONFIG_MAC80211_MESH
 787                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
 788                         switch (params->plink_state) {
 789                         case NL80211_PLINK_LISTEN:
 790                         case NL80211_PLINK_ESTAB:
 791                         case NL80211_PLINK_BLOCKED:
 792                                 sta->plink_state = params->plink_state;
 793                                 break;
 794                         default:
 795                                 /*  nothing  */
 796                                 break;
 797                         }
 798                 else
 799                         switch (params->plink_action) {
 800                         case PLINK_ACTION_OPEN:
 801                                 mesh_plink_open(sta);
 802                                 break;
 803                         case PLINK_ACTION_BLOCK:
 804                                 mesh_plink_block(sta);
 805                                 break;
 806                         }
 807 #endif
 808         }
 809 }
 810
 811 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 812                                  u8 *mac, struct station_parameters *params)
 813 {
 814         struct ieee80211_local *local = wiphy_priv(wiphy);
 815         struct sta_info *sta;
 816         struct ieee80211_sub_if_data *sdata;
 817         int err;
 818         int layer2_update;
 819
 820         if (params->vlan) {
 821                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 822
 823                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 824                     sdata->vif.type != NL80211_IFTYPE_AP)
 825                         return -EINVAL;
 826         } else
 827                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 828
 829         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 830                 return -EINVAL;
 831
 832         if (is_multicast_ether_addr(mac))
 833                 return -EINVAL;
 834
 835         /* Only TDLS-supporting stations can add TDLS peers */
 836         if ((params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
 837             !((wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
 838               sdata->vif.type == NL80211_IFTYPE_STATION))
 839                 return -ENOTSUPP;
 840
 841         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 842         if (!sta)
 843                 return -ENOMEM;
 844
 845         set_sta_flag(sta, WLAN_STA_AUTH);
 846         set_sta_flag(sta, WLAN_STA_ASSOC);
 847
 848         sta_apply_parameters(local, sta, params);
 849
 850         rate_control_rate_init(sta);
 851
 852         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 853                 sdata->vif.type == NL80211_IFTYPE_AP;
 854
 855         err = sta_info_insert_rcu(sta);
 856         if (err) {
 857                 rcu_read_unlock();
 858                 return err;
 859         }
 860
 861         if (layer2_update)
 862                 ieee80211_send_layer2_update(sta);
 863
 864         rcu_read_unlock();
 865
 866         return 0;
 867 }
 868
 869 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 870                                  u8 *mac)
 871 {
 872         struct ieee80211_local *local = wiphy_priv(wiphy);
 873         struct ieee80211_sub_if_data *sdata;
 874
 875         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 876
 877         if (mac)
 878                 return sta_info_destroy_addr_bss(sdata, mac);
 879
 880         sta_info_flush(local, sdata);
 881         return 0;
 882 }
 883
 884 static int ieee80211_change_station(struct wiphy *wiphy,
 885                                     struct net_device *dev,
 886                                     u8 *mac,
 887                                     struct station_parameters *params)
 888 {
 889         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 890         struct ieee80211_local *local = wiphy_priv(wiphy);
 891         struct sta_info *sta;
 892         struct ieee80211_sub_if_data *vlansdata;
 893
 894         rcu_read_lock();
 895
 896         sta = sta_info_get_bss(sdata, mac);
 897         if (!sta) {
 898                 rcu_read_unlock();
 899                 return -ENOENT;
 900         }
 901
 902         /* The TDLS bit cannot be toggled after the STA was added */
 903         if ((params->sta_flags_mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
 904             !!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) !=
 905             !!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
 906                 rcu_read_unlock();
 907                 return -EINVAL;
 908         }
 909
 910         if (params->vlan && params->vlan != sta->sdata->dev) {
 911                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 912
 913                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 914                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
 915                         rcu_read_unlock();
 916                         return -EINVAL;
 917                 }
 918
 919                 if (params->vlan->ieee80211_ptr->use_4addr) {
 920                         if (vlansdata->u.vlan.sta) {
 921                                 rcu_read_unlock();
 922                                 return -EBUSY;
 923                         }
 924
 925                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
 926                 }
 927
 928                 sta->sdata = vlansdata;
 929                 ieee80211_send_layer2_update(sta);
 930         }
 931
 932         sta_apply_parameters(local, sta, params);
 933
 934         rcu_read_unlock();
 935
 936         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
 937             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
 938                 ieee80211_recalc_ps(local, -1);
 939
 940         return 0;
 941 }
 942
 943 #ifdef CONFIG_MAC80211_MESH
 944 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 945                                  u8 *dst, u8 *next_hop)
 946 {
 947         struct ieee80211_sub_if_data *sdata;
 948         struct mesh_path *mpath;
 949         struct sta_info *sta;
 950         int err;
 951
 952         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 953
 954         rcu_read_lock();
 955         sta = sta_info_get(sdata, next_hop);
 956         if (!sta) {
 957                 rcu_read_unlock();
 958                 return -ENOENT;
 959         }
 960
 961         err = mesh_path_add(dst, sdata);
 962         if (err) {
 963                 rcu_read_unlock();
 964                 return err;
 965         }
 966
 967         mpath = mesh_path_lookup(dst, sdata);
 968         if (!mpath) {
 969                 rcu_read_unlock();
 970                 return -ENXIO;
 971         }
 972         mesh_path_fix_nexthop(mpath, sta);
 973
 974         rcu_read_unlock();
 975         return 0;
 976 }
 977
 978 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 979                                  u8 *dst)
 980 {
 981         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 982
 983         if (dst)
 984                 return mesh_path_del(dst, sdata);
 985
 986         mesh_path_flush_by_iface(sdata);
 987         return 0;
 988 }
 989
 990 static int ieee80211_change_mpath(struct wiphy *wiphy,
 991                                     struct net_device *dev,
 992                                     u8 *dst, u8 *next_hop)
 993 {
 994         struct ieee80211_sub_if_data *sdata;
 995         struct mesh_path *mpath;
 996         struct sta_info *sta;
 997
 998         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 999
1000         rcu_read_lock();
1001
1002         sta = sta_info_get(sdata, next_hop);
1003         if (!sta) {
1004                 rcu_read_unlock();
1005                 return -ENOENT;
1006         }
1007
1008         mpath = mesh_path_lookup(dst, sdata);
1009         if (!mpath) {
1010                 rcu_read_unlock();
1011                 return -ENOENT;
1012         }
1013
1014         mesh_path_fix_nexthop(mpath, sta);
1015
1016         rcu_read_unlock();
1017         return 0;
1018 }
1019
1020 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1021                             struct mpath_info *pinfo)
1022 {
1023         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1024
1025         if (next_hop_sta)
1026                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1027         else
1028                 memset(next_hop, 0, ETH_ALEN);
1029
1030         pinfo->generation = mesh_paths_generation;
1031
1032         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1033                         MPATH_INFO_SN |
1034                         MPATH_INFO_METRIC |
1035                         MPATH_INFO_EXPTIME |
1036                         MPATH_INFO_DISCOVERY_TIMEOUT |
1037                         MPATH_INFO_DISCOVERY_RETRIES |
1038                         MPATH_INFO_FLAGS;
1039
1040         pinfo->frame_qlen = mpath->frame_queue.qlen;
1041         pinfo->sn = mpath->sn;
1042         pinfo->metric = mpath->metric;
1043         if (time_before(jiffies, mpath->exp_time))
1044                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1045         pinfo->discovery_timeout =
1046                         jiffies_to_msecs(mpath->discovery_timeout);
1047         pinfo->discovery_retries = mpath->discovery_retries;
1048         pinfo->flags = 0;
1049         if (mpath->flags & MESH_PATH_ACTIVE)
1050                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1051         if (mpath->flags & MESH_PATH_RESOLVING)
1052                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1053         if (mpath->flags & MESH_PATH_SN_VALID)
1054                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1055         if (mpath->flags & MESH_PATH_FIXED)
1056                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1057         if (mpath->flags & MESH_PATH_RESOLVING)
1058                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1059
1060         pinfo->flags = mpath->flags;
1061 }
1062
1063 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1064                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1065
1066 {
1067         struct ieee80211_sub_if_data *sdata;
1068         struct mesh_path *mpath;
1069
1070         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1071
1072         rcu_read_lock();
1073         mpath = mesh_path_lookup(dst, sdata);
1074         if (!mpath) {
1075                 rcu_read_unlock();
1076                 return -ENOENT;
1077         }
1078         memcpy(dst, mpath->dst, ETH_ALEN);
1079         mpath_set_pinfo(mpath, next_hop, pinfo);
1080         rcu_read_unlock();
1081         return 0;
1082 }
1083
1084 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1085                                  int idx, u8 *dst, u8 *next_hop,
1086                                  struct mpath_info *pinfo)
1087 {
1088         struct ieee80211_sub_if_data *sdata;
1089         struct mesh_path *mpath;
1090
1091         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1092
1093         rcu_read_lock();
1094         mpath = mesh_path_lookup_by_idx(idx, sdata);
1095         if (!mpath) {
1096                 rcu_read_unlock();
1097                 return -ENOENT;
1098         }
1099         memcpy(dst, mpath->dst, ETH_ALEN);
1100         mpath_set_pinfo(mpath, next_hop, pinfo);
1101         rcu_read_unlock();
1102         return 0;
1103 }
1104
1105 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1106                                 struct net_device *dev,
1107                                 struct mesh_config *conf)
1108 {
1109         struct ieee80211_sub_if_data *sdata;
1110         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1111
1112         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1113         return 0;
1114 }
1115
1116 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1117 {
1118         return (mask >> (parm-1)) & 0x1;
1119 }
1120
1121 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1122                 const struct mesh_setup *setup)
1123 {
1124         u8 *new_ie;
1125         const u8 *old_ie;
1126
1127         /* allocate information elements */
1128         new_ie = NULL;
1129         old_ie = ifmsh->ie;
1130
1131         if (setup->ie_len) {
1132                 new_ie = kmemdup(setup->ie, setup->ie_len,
1133                                 GFP_KERNEL);
1134                 if (!new_ie)
1135                         return -ENOMEM;
1136         }
1137         ifmsh->ie_len = setup->ie_len;
1138         ifmsh->ie = new_ie;
1139         kfree(old_ie);
1140
1141         /* now copy the rest of the setup parameters */
1142         ifmsh->mesh_id_len = setup->mesh_id_len;
1143         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1144         ifmsh->mesh_pp_id = setup->path_sel_proto;
1145         ifmsh->mesh_pm_id = setup->path_metric;
1146         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1147         if (setup->is_authenticated)
1148                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1149         if (setup->is_secure)
1150                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1151
1152         return 0;
1153 }
1154
1155 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1156                                         struct net_device *dev, u32 mask,
1157                                         const struct mesh_config *nconf)
1158 {
1159         struct mesh_config *conf;
1160         struct ieee80211_sub_if_data *sdata;
1161         struct ieee80211_if_mesh *ifmsh;
1162
1163         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1164         ifmsh = &sdata->u.mesh;
1165
1166         /* Set the config options which we are interested in setting */
1167         conf = &(sdata->u.mesh.mshcfg);
1168         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1169                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1170         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1171                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1172         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1173                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1174         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1175                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1176         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1177                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1178         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1179                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1180         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1181                 conf->dot11MeshTTL = nconf->element_ttl;
1182         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1183                 conf->auto_open_plinks = nconf->auto_open_plinks;
1184         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1185                 conf->dot11MeshHWMPmaxPREQretries =
1186                         nconf->dot11MeshHWMPmaxPREQretries;
1187         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1188                 conf->path_refresh_time = nconf->path_refresh_time;
1189         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1190                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1191         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1192                 conf->dot11MeshHWMPactivePathTimeout =
1193                         nconf->dot11MeshHWMPactivePathTimeout;
1194         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1195                 conf->dot11MeshHWMPpreqMinInterval =
1196                         nconf->dot11MeshHWMPpreqMinInterval;
1197         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1198                            mask))
1199                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1200                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1201         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1202                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1203                 ieee80211_mesh_root_setup(ifmsh);
1204         }
1205         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1206                 /* our current gate announcement implementation rides on root
1207                  * announcements, so require this ifmsh to also be a root node
1208                  * */
1209                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1210                     !conf->dot11MeshHWMPRootMode) {
1211                         conf->dot11MeshHWMPRootMode = 1;
1212                         ieee80211_mesh_root_setup(ifmsh);
1213                 }
1214                 conf->dot11MeshGateAnnouncementProtocol =
1215                         nconf->dot11MeshGateAnnouncementProtocol;
1216         }
1217         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
1218                 conf->dot11MeshHWMPRannInterval =
1219                         nconf->dot11MeshHWMPRannInterval;
1220         }
1221         return 0;
1222 }
1223
1224 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1225                                const struct mesh_config *conf,
1226                                const struct mesh_setup *setup)
1227 {
1228         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1229         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1230         int err;
1231
1232         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1233         err = copy_mesh_setup(ifmsh, setup);
1234         if (err)
1235                 return err;
1236         ieee80211_start_mesh(sdata);
1237
1238         return 0;
1239 }
1240
1241 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1242 {
1243         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1244
1245         ieee80211_stop_mesh(sdata);
1246
1247         return 0;
1248 }
1249 #endif
1250
1251 static int ieee80211_change_bss(struct wiphy *wiphy,
1252                                 struct net_device *dev,
1253                                 struct bss_parameters *params)
1254 {
1255         struct ieee80211_sub_if_data *sdata;
1256         u32 changed = 0;
1257
1258         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1259
1260         if (params->use_cts_prot >= 0) {
1261                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1262                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1263         }
1264         if (params->use_short_preamble >= 0) {
1265                 sdata->vif.bss_conf.use_short_preamble =
1266                         params->use_short_preamble;
1267                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1268         }
1269
1270         if (!sdata->vif.bss_conf.use_short_slot &&
1271             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1272                 sdata->vif.bss_conf.use_short_slot = true;
1273                 changed |= BSS_CHANGED_ERP_SLOT;
1274         }
1275
1276         if (params->use_short_slot_time >= 0) {
1277                 sdata->vif.bss_conf.use_short_slot =
1278                         params->use_short_slot_time;
1279                 changed |= BSS_CHANGED_ERP_SLOT;
1280         }
1281
1282         if (params->basic_rates) {
1283                 int i, j;
1284                 u32 rates = 0;
1285                 struct ieee80211_local *local = wiphy_priv(wiphy);
1286                 struct ieee80211_supported_band *sband =
1287                         wiphy->bands[local->oper_channel->band];
1288
1289                 for (i = 0; i < params->basic_rates_len; i++) {
1290                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1291                         for (j = 0; j < sband->n_bitrates; j++) {
1292                                 if (sband->bitrates[j].bitrate == rate)
1293                                         rates |= BIT(j);
1294                         }
1295                 }
1296                 sdata->vif.bss_conf.basic_rates = rates;
1297                 changed |= BSS_CHANGED_BASIC_RATES;
1298         }
1299
1300         if (params->ap_isolate >= 0) {
1301                 if (params->ap_isolate)
1302                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1303                 else
1304                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1305         }
1306
1307         if (params->ht_opmode >= 0) {
1308                 sdata->vif.bss_conf.ht_operation_mode =
1309                         (u16) params->ht_opmode;
1310                 changed |= BSS_CHANGED_HT;
1311         }
1312
1313         ieee80211_bss_info_change_notify(sdata, changed);
1314
1315         return 0;
1316 }
1317
1318 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1319                                     struct net_device *dev,
1320                                     struct ieee80211_txq_params *params)
1321 {
1322         struct ieee80211_local *local = wiphy_priv(wiphy);
1323         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1324         struct ieee80211_tx_queue_params p;
1325
1326         if (!local->ops->conf_tx)
1327                 return -EOPNOTSUPP;
1328
1329         memset(&p, 0, sizeof(p));
1330         p.aifs = params->aifs;
1331         p.cw_max = params->cwmax;
1332         p.cw_min = params->cwmin;
1333         p.txop = params->txop;
1334
1335         /*
1336          * Setting tx queue params disables u-apsd because it's only
1337          * called in master mode.
1338          */
1339         p.uapsd = false;
1340
1341         if (params->queue >= local->hw.queues)
1342                 return -EINVAL;
1343
1344         sdata->tx_conf[params->queue] = p;
1345         if (drv_conf_tx(local, sdata, params->queue, &p)) {
1346                 wiphy_debug(local->hw.wiphy,
1347                             "failed to set TX queue parameters for queue %d\n",
1348                             params->queue);
1349                 return -EINVAL;
1350         }
1351
1352         return 0;
1353 }
1354
1355 static int ieee80211_set_channel(struct wiphy *wiphy,
1356                                  struct net_device *netdev,
1357                                  struct ieee80211_channel *chan,
1358                                  enum nl80211_channel_type channel_type)
1359 {
1360         struct ieee80211_local *local = wiphy_priv(wiphy);
1361         struct ieee80211_sub_if_data *sdata = NULL;
1362         struct ieee80211_channel *old_oper;
1363         enum nl80211_channel_type old_oper_type;
1364         enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1365
1366         if (netdev)
1367                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1368
1369         switch (ieee80211_get_channel_mode(local, NULL)) {
1370         case CHAN_MODE_HOPPING:
1371                 return -EBUSY;
1372         case CHAN_MODE_FIXED:
1373                 if (local->oper_channel != chan)
1374                         return -EBUSY;
1375                 if (!sdata && local->_oper_channel_type == channel_type)
1376                         return 0;
1377                 break;
1378         case CHAN_MODE_UNDEFINED:
1379                 break;
1380         }
1381
1382         if (sdata)
1383                 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1384         old_oper_type = local->_oper_channel_type;
1385
1386         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1387                 return -EBUSY;
1388
1389         old_oper = local->oper_channel;
1390         local->oper_channel = chan;
1391
1392         /* Update driver if changes were actually made. */
1393         if ((old_oper != local->oper_channel) ||
1394             (old_oper_type != local->_oper_channel_type))
1395                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1396
1397         if ((sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR) &&
1398             old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1399                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1400
1401         return 0;
1402 }
1403
1404 #ifdef CONFIG_PM
1405 static int ieee80211_suspend(struct wiphy *wiphy,
1406                              struct cfg80211_wowlan *wowlan)
1407 {
1408         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1409 }
1410
1411 static int ieee80211_resume(struct wiphy *wiphy)
1412 {
1413         return __ieee80211_resume(wiphy_priv(wiphy));
1414 }
1415 #else
1416 #define ieee80211_suspend NULL
1417 #define ieee80211_resume NULL
1418 #endif
1419
1420 static int ieee80211_scan(struct wiphy *wiphy,
1421                           struct net_device *dev,
1422                           struct cfg80211_scan_request *req)
1423 {
1424         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1425
1426         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1427         case NL80211_IFTYPE_STATION:
1428         case NL80211_IFTYPE_ADHOC:
1429         case NL80211_IFTYPE_MESH_POINT:
1430         case NL80211_IFTYPE_P2P_CLIENT:
1431                 break;
1432         case NL80211_IFTYPE_P2P_GO:
1433                 if (sdata->local->ops->hw_scan)
1434                         break;
1435                 /*
1436                  * FIXME: implement NoA while scanning in software,
1437                  * for now fall through to allow scanning only when
1438                  * beaconing hasn't been configured yet
1439                  */
1440         case NL80211_IFTYPE_AP:
1441                 if (sdata->u.ap.beacon)
1442                         return -EOPNOTSUPP;
1443                 break;
1444         default:
1445                 return -EOPNOTSUPP;
1446         }
1447
1448         return ieee80211_request_scan(sdata, req);
1449 }
1450
1451 static int
1452 ieee80211_sched_scan_start(struct wiphy *wiphy,
1453                            struct net_device *dev,
1454                            struct cfg80211_sched_scan_request *req)
1455 {
1456         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1457
1458         if (!sdata->local->ops->sched_scan_start)
1459                 return -EOPNOTSUPP;
1460
1461         return ieee80211_request_sched_scan_start(sdata, req);
1462 }
1463
1464 static int
1465 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1466 {
1467         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1468
1469         if (!sdata->local->ops->sched_scan_stop)
1470                 return -EOPNOTSUPP;
1471
1472         return ieee80211_request_sched_scan_stop(sdata);
1473 }
1474
1475 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1476                           struct cfg80211_auth_request *req)
1477 {
1478         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1479 }
1480
1481 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1482                            struct cfg80211_assoc_request *req)
1483 {
1484         struct ieee80211_local *local = wiphy_priv(wiphy);
1485         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1486
1487         switch (ieee80211_get_channel_mode(local, sdata)) {
1488         case CHAN_MODE_HOPPING:
1489                 return -EBUSY;
1490         case CHAN_MODE_FIXED:
1491                 if (local->oper_channel == req->bss->channel)
1492                         break;
1493                 return -EBUSY;
1494         case CHAN_MODE_UNDEFINED:
1495                 break;
1496         }
1497
1498         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1499 }
1500
1501 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1502                             struct cfg80211_deauth_request *req,
1503                             void *cookie)
1504 {
1505         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1506                                     req, cookie);
1507 }
1508
1509 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1510                               struct cfg80211_disassoc_request *req,
1511                               void *cookie)
1512 {
1513         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1514                                       req, cookie);
1515 }
1516
1517 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1518                                struct cfg80211_ibss_params *params)
1519 {
1520         struct ieee80211_local *local = wiphy_priv(wiphy);
1521         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1522
1523         switch (ieee80211_get_channel_mode(local, sdata)) {
1524         case CHAN_MODE_HOPPING:
1525                 return -EBUSY;
1526         case CHAN_MODE_FIXED:
1527                 if (!params->channel_fixed)
1528                         return -EBUSY;
1529                 if (local->oper_channel == params->channel)
1530                         break;
1531                 return -EBUSY;
1532         case CHAN_MODE_UNDEFINED:
1533                 break;
1534         }
1535
1536         return ieee80211_ibss_join(sdata, params);
1537 }
1538
1539 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1540 {
1541         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1542
1543         return ieee80211_ibss_leave(sdata);
1544 }
1545
1546 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1547 {
1548         struct ieee80211_local *local = wiphy_priv(wiphy);
1549         int err;
1550
1551         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1552                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1553
1554                 if (err)
1555                         return err;
1556         }
1557
1558         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1559                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1560
1561                 if (err)
1562                         return err;
1563         }
1564
1565         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1566                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1567
1568                 if (err)
1569                         return err;
1570         }
1571
1572         if (changed & WIPHY_PARAM_RETRY_SHORT)
1573                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1574         if (changed & WIPHY_PARAM_RETRY_LONG)
1575                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1576         if (changed &
1577             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1578                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1579
1580         return 0;
1581 }
1582
1583 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1584                                   enum nl80211_tx_power_setting type, int mbm)
1585 {
1586         struct ieee80211_local *local = wiphy_priv(wiphy);
1587         struct ieee80211_channel *chan = local->hw.conf.channel;
1588         u32 changes = 0;
1589
1590         switch (type) {
1591         case NL80211_TX_POWER_AUTOMATIC:
1592                 local->user_power_level = -1;
1593                 break;
1594         case NL80211_TX_POWER_LIMITED:
1595                 if (mbm < 0 || (mbm % 100))
1596                         return -EOPNOTSUPP;
1597                 local->user_power_level = MBM_TO_DBM(mbm);
1598                 break;
1599         case NL80211_TX_POWER_FIXED:
1600                 if (mbm < 0 || (mbm % 100))
1601                         return -EOPNOTSUPP;
1602                 /* TODO: move to cfg80211 when it knows the channel */
1603                 if (MBM_TO_DBM(mbm) > chan->max_power)
1604                         return -EINVAL;
1605                 local->user_power_level = MBM_TO_DBM(mbm);
1606                 break;
1607         }
1608
1609         ieee80211_hw_config(local, changes);
1610
1611         return 0;
1612 }
1613
1614 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1615 {
1616         struct ieee80211_local *local = wiphy_priv(wiphy);
1617
1618         *dbm = local->hw.conf.power_level;
1619
1620         return 0;
1621 }
1622
1623 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1624                                   const u8 *addr)
1625 {
1626         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1627
1628         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1629
1630         return 0;
1631 }
1632
1633 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1634 {
1635         struct ieee80211_local *local = wiphy_priv(wiphy);
1636
1637         drv_rfkill_poll(local);
1638 }
1639
1640 #ifdef CONFIG_NL80211_TESTMODE
1641 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1642 {
1643         struct ieee80211_local *local = wiphy_priv(wiphy);
1644
1645         if (!local->ops->testmode_cmd)
1646                 return -EOPNOTSUPP;
1647
1648         return local->ops->testmode_cmd(&local->hw, data, len);
1649 }
1650
1651 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1652                                    struct sk_buff *skb,
1653                                    struct netlink_callback *cb,
1654                                    void *data, int len)
1655 {
1656         struct ieee80211_local *local = wiphy_priv(wiphy);
1657
1658         if (!local->ops->testmode_dump)
1659                 return -EOPNOTSUPP;
1660
1661         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1662 }
1663 #endif
1664
1665 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1666                              enum ieee80211_smps_mode smps_mode)
1667 {
1668         const u8 *ap;
1669         enum ieee80211_smps_mode old_req;
1670         int err;
1671
1672         lockdep_assert_held(&sdata->u.mgd.mtx);
1673
1674         old_req = sdata->u.mgd.req_smps;
1675         sdata->u.mgd.req_smps = smps_mode;
1676
1677         if (old_req == smps_mode &&
1678             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1679                 return 0;
1680
1681         /*
1682          * If not associated, or current association is not an HT
1683          * association, there's no need to send an action frame.
1684          */
1685         if (!sdata->u.mgd.associated ||
1686             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1687                 mutex_lock(&sdata->local->iflist_mtx);
1688                 ieee80211_recalc_smps(sdata->local);
1689                 mutex_unlock(&sdata->local->iflist_mtx);
1690                 return 0;
1691         }
1692
1693         ap = sdata->u.mgd.associated->bssid;
1694
1695         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1696                 if (sdata->u.mgd.powersave)
1697                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1698                 else
1699                         smps_mode = IEEE80211_SMPS_OFF;
1700         }
1701
1702         /* send SM PS frame to AP */
1703         err = ieee80211_send_smps_action(sdata, smps_mode,
1704                                          ap, ap);
1705         if (err)
1706                 sdata->u.mgd.req_smps = old_req;
1707
1708         return err;
1709 }
1710
1711 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1712                                     bool enabled, int timeout)
1713 {
1714         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1715         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1716
1717         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1718                 return -EOPNOTSUPP;
1719
1720         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1721                 return -EOPNOTSUPP;
1722
1723         if (enabled == sdata->u.mgd.powersave &&
1724             timeout == local->dynamic_ps_forced_timeout)
1725                 return 0;
1726
1727         sdata->u.mgd.powersave = enabled;
1728         local->dynamic_ps_forced_timeout = timeout;
1729
1730         /* no change, but if automatic follow powersave */
1731         mutex_lock(&sdata->u.mgd.mtx);
1732         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1733         mutex_unlock(&sdata->u.mgd.mtx);
1734
1735         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1736                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1737
1738         ieee80211_recalc_ps(local, -1);
1739
1740         return 0;
1741 }
1742
1743 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1744                                          struct net_device *dev,
1745                                          s32 rssi_thold, u32 rssi_hyst)
1746 {
1747         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1748         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1749         struct ieee80211_vif *vif = &sdata->vif;
1750         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1751
1752         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1753             rssi_hyst == bss_conf->cqm_rssi_hyst)
1754                 return 0;
1755
1756         bss_conf->cqm_rssi_thold = rssi_thold;
1757         bss_conf->cqm_rssi_hyst = rssi_hyst;
1758
1759         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1760                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1761                         return -EOPNOTSUPP;
1762                 return 0;
1763         }
1764
1765         /* tell the driver upon association, unless already associated */
1766         if (sdata->u.mgd.associated)
1767                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1768
1769         return 0;
1770 }
1771
1772 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1773                                       struct net_device *dev,
1774                                       const u8 *addr,
1775                                       const struct cfg80211_bitrate_mask *mask)
1776 {
1777         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1778         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1779         int i, ret;
1780
1781         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1782                 ret = drv_set_bitrate_mask(local, sdata, mask);
1783                 if (ret)
1784                         return ret;
1785         }
1786
1787         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1788                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1789
1790         return 0;
1791 }
1792
1793 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1794                                           struct net_device *dev,
1795                                           struct ieee80211_channel *chan,
1796                                           enum nl80211_channel_type chantype,
1797                                           unsigned int duration, u64 *cookie)
1798 {
1799         int ret;
1800         u32 random_cookie;
1801
1802         lockdep_assert_held(&local->mtx);
1803
1804         if (local->hw_roc_cookie)
1805                 return -EBUSY;
1806         /* must be nonzero */
1807         random_cookie = random32() | 1;
1808
1809         *cookie = random_cookie;
1810         local->hw_roc_dev = dev;
1811         local->hw_roc_cookie = random_cookie;
1812         local->hw_roc_channel = chan;
1813         local->hw_roc_channel_type = chantype;
1814         local->hw_roc_duration = duration;
1815         ret = drv_remain_on_channel(local, chan, chantype, duration);
1816         if (ret) {
1817                 local->hw_roc_channel = NULL;
1818                 local->hw_roc_cookie = 0;
1819         }
1820
1821         return ret;
1822 }
1823
1824 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1825                                        struct net_device *dev,
1826                                        struct ieee80211_channel *chan,
1827                                        enum nl80211_channel_type channel_type,
1828                                        unsigned int duration,
1829                                        u64 *cookie)
1830 {
1831         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1832         struct ieee80211_local *local = sdata->local;
1833
1834         if (local->ops->remain_on_channel) {
1835                 int ret;
1836
1837                 mutex_lock(&local->mtx);
1838                 ret = ieee80211_remain_on_channel_hw(local, dev,
1839                                                      chan, channel_type,
1840                                                      duration, cookie);
1841                 local->hw_roc_for_tx = false;
1842                 mutex_unlock(&local->mtx);
1843
1844                 return ret;
1845         }
1846
1847         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1848                                               duration, cookie);
1849 }
1850
1851 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1852                                                  u64 cookie)
1853 {
1854         int ret;
1855
1856         lockdep_assert_held(&local->mtx);
1857
1858         if (local->hw_roc_cookie != cookie)
1859                 return -ENOENT;
1860
1861         ret = drv_cancel_remain_on_channel(local);
1862         if (ret)
1863                 return ret;
1864
1865         local->hw_roc_cookie = 0;
1866         local->hw_roc_channel = NULL;
1867
1868         ieee80211_recalc_idle(local);
1869
1870         return 0;
1871 }
1872
1873 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1874                                               struct net_device *dev,
1875                                               u64 cookie)
1876 {
1877         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1878         struct ieee80211_local *local = sdata->local;
1879
1880         if (local->ops->cancel_remain_on_channel) {
1881                 int ret;
1882
1883                 mutex_lock(&local->mtx);
1884                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
1885                 mutex_unlock(&local->mtx);
1886
1887                 return ret;
1888         }
1889
1890         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1891 }
1892
1893 static enum work_done_result
1894 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
1895 {
1896         /*
1897          * Use the data embedded in the work struct for reporting
1898          * here so if the driver mangled the SKB before dropping
1899          * it (which is the only way we really should get here)
1900          * then we don't report mangled data.
1901          *
1902          * If there was no wait time, then by the time we get here
1903          * the driver will likely not have reported the status yet,
1904          * so in that case userspace will have to deal with it.
1905          */
1906
1907         if (wk->offchan_tx.wait && !wk->offchan_tx.status)
1908                 cfg80211_mgmt_tx_status(wk->sdata->dev,
1909                                         (unsigned long) wk->offchan_tx.frame,
1910                                         wk->ie, wk->ie_len, false, GFP_KERNEL);
1911
1912         return WORK_DONE_DESTROY;
1913 }
1914
1915 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
1916                              struct ieee80211_channel *chan, bool offchan,
1917                              enum nl80211_channel_type channel_type,
1918                              bool channel_type_valid, unsigned int wait,
1919                              const u8 *buf, size_t len, bool no_cck,
1920                              u64 *cookie)
1921 {
1922         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1923         struct ieee80211_local *local = sdata->local;
1924         struct sk_buff *skb;
1925         struct sta_info *sta;
1926         struct ieee80211_work *wk;
1927         const struct ieee80211_mgmt *mgmt = (void *)buf;
1928         u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
1929                     IEEE80211_TX_CTL_REQ_TX_STATUS;
1930         bool is_offchan = false;
1931
1932         /* Check that we are on the requested channel for transmission */
1933         if (chan != local->tmp_channel &&
1934             chan != local->oper_channel)
1935                 is_offchan = true;
1936         if (channel_type_valid &&
1937             (channel_type != local->tmp_channel_type &&
1938              channel_type != local->_oper_channel_type))
1939                 is_offchan = true;
1940
1941         if (chan == local->hw_roc_channel) {
1942                 /* TODO: check channel type? */
1943                 is_offchan = false;
1944                 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
1945         }
1946
1947         if (no_cck)
1948                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
1949
1950         if (is_offchan && !offchan)
1951                 return -EBUSY;
1952
1953         switch (sdata->vif.type) {
1954         case NL80211_IFTYPE_ADHOC:
1955         case NL80211_IFTYPE_AP:
1956         case NL80211_IFTYPE_AP_VLAN:
1957         case NL80211_IFTYPE_P2P_GO:
1958         case NL80211_IFTYPE_MESH_POINT:
1959                 if (!ieee80211_is_action(mgmt->frame_control) ||
1960                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
1961                         break;
1962                 rcu_read_lock();
1963                 sta = sta_info_get(sdata, mgmt->da);
1964                 rcu_read_unlock();
1965                 if (!sta)
1966                         return -ENOLINK;
1967                 break;
1968         case NL80211_IFTYPE_STATION:
1969         case NL80211_IFTYPE_P2P_CLIENT:
1970                 break;
1971         default:
1972                 return -EOPNOTSUPP;
1973         }
1974
1975         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
1976         if (!skb)
1977                 return -ENOMEM;
1978         skb_reserve(skb, local->hw.extra_tx_headroom);
1979
1980         memcpy(skb_put(skb, len), buf, len);
1981
1982         IEEE80211_SKB_CB(skb)->flags = flags;
1983
1984         skb->dev = sdata->dev;
1985
1986         *cookie = (unsigned long) skb;
1987
1988         if (is_offchan && local->ops->remain_on_channel) {
1989                 unsigned int duration;
1990                 int ret;
1991
1992                 mutex_lock(&local->mtx);
1993                 /*
1994                  * If the duration is zero, then the driver
1995                  * wouldn't actually do anything. Set it to
1996                  * 100 for now.
1997                  *
1998                  * TODO: cancel the off-channel operation
1999                  *       when we get the SKB's TX status and
2000                  *       the wait time was zero before.
2001                  */
2002                 duration = 100;
2003                 if (wait)
2004                         duration = wait;
2005                 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
2006                                                      channel_type,
2007                                                      duration, cookie);
2008                 if (ret) {
2009                         kfree_skb(skb);
2010                         mutex_unlock(&local->mtx);
2011                         return ret;
2012                 }
2013
2014                 local->hw_roc_for_tx = true;
2015                 local->hw_roc_duration = wait;
2016
2017                 /*
2018                  * queue up frame for transmission after
2019                  * ieee80211_ready_on_channel call
2020                  */
2021
2022                 /* modify cookie to prevent API mismatches */
2023                 *cookie ^= 2;
2024                 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2025                 local->hw_roc_skb = skb;
2026                 local->hw_roc_skb_for_status = skb;
2027                 mutex_unlock(&local->mtx);
2028
2029                 return 0;
2030         }
2031
2032         /*
2033          * Can transmit right away if the channel was the
2034          * right one and there's no wait involved... If a
2035          * wait is involved, we might otherwise not be on
2036          * the right channel for long enough!
2037          */
2038         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
2039                 ieee80211_tx_skb(sdata, skb);
2040                 return 0;
2041         }
2042
2043         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
2044         if (!wk) {
2045                 kfree_skb(skb);
2046                 return -ENOMEM;
2047         }
2048
2049         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
2050         wk->chan = chan;
2051         wk->chan_type = channel_type;
2052         wk->sdata = sdata;
2053         wk->done = ieee80211_offchan_tx_done;
2054         wk->offchan_tx.frame = skb;
2055         wk->offchan_tx.wait = wait;
2056         wk->ie_len = len;
2057         memcpy(wk->ie, buf, len);
2058
2059         ieee80211_add_work(wk);
2060         return 0;
2061 }
2062
2063 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2064                                          struct net_device *dev,
2065                                          u64 cookie)
2066 {
2067         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2068         struct ieee80211_local *local = sdata->local;
2069         struct ieee80211_work *wk;
2070         int ret = -ENOENT;
2071
2072         mutex_lock(&local->mtx);
2073
2074         if (local->ops->cancel_remain_on_channel) {
2075                 cookie ^= 2;
2076                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2077
2078                 if (ret == 0) {
2079                         kfree_skb(local->hw_roc_skb);
2080                         local->hw_roc_skb = NULL;
2081                         local->hw_roc_skb_for_status = NULL;
2082                 }
2083
2084                 mutex_unlock(&local->mtx);
2085
2086                 return ret;
2087         }
2088
2089         list_for_each_entry(wk, &local->work_list, list) {
2090                 if (wk->sdata != sdata)
2091                         continue;
2092
2093                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2094                         continue;
2095
2096                 if (cookie != (unsigned long) wk->offchan_tx.frame)
2097                         continue;
2098
2099                 wk->timeout = jiffies;
2100
2101                 ieee80211_queue_work(&local->hw, &local->work_work);
2102                 ret = 0;
2103                 break;
2104         }
2105         mutex_unlock(&local->mtx);
2106
2107         return ret;
2108 }
2109
2110 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2111                                           struct net_device *dev,
2112                                           u16 frame_type, bool reg)
2113 {
2114         struct ieee80211_local *local = wiphy_priv(wiphy);
2115
2116         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2117                 return;
2118
2119         if (reg)
2120                 local->probe_req_reg++;
2121         else
2122                 local->probe_req_reg--;
2123
2124         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2125 }
2126
2127 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2128 {
2129         struct ieee80211_local *local = wiphy_priv(wiphy);
2130
2131         if (local->started)
2132                 return -EOPNOTSUPP;
2133
2134         return drv_set_antenna(local, tx_ant, rx_ant);
2135 }
2136
2137 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2138 {
2139         struct ieee80211_local *local = wiphy_priv(wiphy);
2140
2141         return drv_get_antenna(local, tx_ant, rx_ant);
2142 }
2143
2144 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2145 {
2146         struct ieee80211_local *local = wiphy_priv(wiphy);
2147
2148         return drv_set_ringparam(local, tx, rx);
2149 }
2150
2151 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2152                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2153 {
2154         struct ieee80211_local *local = wiphy_priv(wiphy);
2155
2156         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2157 }
2158
2159 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2160                                     struct net_device *dev,
2161                                     struct cfg80211_gtk_rekey_data *data)
2162 {
2163         struct ieee80211_local *local = wiphy_priv(wiphy);
2164         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2165
2166         if (!local->ops->set_rekey_data)
2167                 return -EOPNOTSUPP;
2168
2169         drv_set_rekey_data(local, sdata, data);
2170
2171         return 0;
2172 }
2173
2174 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2175 {
2176         u8 *pos = (void *)skb_put(skb, 7);
2177
2178         *pos++ = WLAN_EID_EXT_CAPABILITY;
2179         *pos++ = 5; /* len */
2180         *pos++ = 0x0;
2181         *pos++ = 0x0;
2182         *pos++ = 0x0;
2183         *pos++ = 0x0;
2184         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2185 }
2186
2187 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2188 {
2189         struct ieee80211_local *local = sdata->local;
2190         u16 capab;
2191
2192         capab = 0;
2193         if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2194                 return capab;
2195
2196         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2197                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2198         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2199                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2200
2201         return capab;
2202 }
2203
2204 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2205                                        u8 *peer, u8 *bssid)
2206 {
2207         struct ieee80211_tdls_lnkie *lnkid;
2208
2209         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2210
2211         lnkid->ie_type = WLAN_EID_LINK_ID;
2212         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2213
2214         memcpy(lnkid->bssid, bssid, ETH_ALEN);
2215         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2216         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2217 }
2218
2219 static int
2220 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2221                                u8 *peer, u8 action_code, u8 dialog_token,
2222                                u16 status_code, struct sk_buff *skb)
2223 {
2224         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2225         struct ieee80211_tdls_data *tf;
2226
2227         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2228
2229         memcpy(tf->da, peer, ETH_ALEN);
2230         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2231         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2232         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2233
2234         switch (action_code) {
2235         case WLAN_TDLS_SETUP_REQUEST:
2236                 tf->category = WLAN_CATEGORY_TDLS;
2237                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2238
2239                 skb_put(skb, sizeof(tf->u.setup_req));
2240                 tf->u.setup_req.dialog_token = dialog_token;
2241                 tf->u.setup_req.capability =
2242                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2243
2244                 ieee80211_add_srates_ie(&sdata->vif, skb);
2245                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2246                 ieee80211_tdls_add_ext_capab(skb);
2247                 break;
2248         case WLAN_TDLS_SETUP_RESPONSE:
2249                 tf->category = WLAN_CATEGORY_TDLS;
2250                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2251
2252                 skb_put(skb, sizeof(tf->u.setup_resp));
2253                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2254                 tf->u.setup_resp.dialog_token = dialog_token;
2255                 tf->u.setup_resp.capability =
2256                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2257
2258                 ieee80211_add_srates_ie(&sdata->vif, skb);
2259                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2260                 ieee80211_tdls_add_ext_capab(skb);
2261                 break;
2262         case WLAN_TDLS_SETUP_CONFIRM:
2263                 tf->category = WLAN_CATEGORY_TDLS;
2264                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2265
2266                 skb_put(skb, sizeof(tf->u.setup_cfm));
2267                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2268                 tf->u.setup_cfm.dialog_token = dialog_token;
2269                 break;
2270         case WLAN_TDLS_TEARDOWN:
2271                 tf->category = WLAN_CATEGORY_TDLS;
2272                 tf->action_code = WLAN_TDLS_TEARDOWN;
2273
2274                 skb_put(skb, sizeof(tf->u.teardown));
2275                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2276                 break;
2277         case WLAN_TDLS_DISCOVERY_REQUEST:
2278                 tf->category = WLAN_CATEGORY_TDLS;
2279                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2280
2281                 skb_put(skb, sizeof(tf->u.discover_req));
2282                 tf->u.discover_req.dialog_token = dialog_token;
2283                 break;
2284         default:
2285                 return -EINVAL;
2286         }
2287
2288         return 0;
2289 }
2290
2291 static int
2292 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2293                            u8 *peer, u8 action_code, u8 dialog_token,
2294                            u16 status_code, struct sk_buff *skb)
2295 {
2296         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2297         struct ieee80211_mgmt *mgmt;
2298
2299         mgmt = (void *)skb_put(skb, 24);
2300         memset(mgmt, 0, 24);
2301         memcpy(mgmt->da, peer, ETH_ALEN);
2302         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2303         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2304
2305         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2306                                           IEEE80211_STYPE_ACTION);
2307
2308         switch (action_code) {
2309         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2310                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2311                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2312                 mgmt->u.action.u.tdls_discover_resp.action_code =
2313                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2314                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2315                         dialog_token;
2316                 mgmt->u.action.u.tdls_discover_resp.capability =
2317                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2318
2319                 ieee80211_add_srates_ie(&sdata->vif, skb);
2320                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2321                 ieee80211_tdls_add_ext_capab(skb);
2322                 break;
2323         default:
2324                 return -EINVAL;
2325         }
2326
2327         return 0;
2328 }
2329
2330 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2331                                u8 *peer, u8 action_code, u8 dialog_token,
2332                                u16 status_code, const u8 *extra_ies,
2333                                size_t extra_ies_len)
2334 {
2335         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2336         struct ieee80211_local *local = sdata->local;
2337         struct ieee80211_tx_info *info;
2338         struct sk_buff *skb = NULL;
2339         bool send_direct;
2340         int ret;
2341
2342         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2343                 return -ENOTSUPP;
2344
2345         /* make sure we are in managed mode, and associated */
2346         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2347             !sdata->u.mgd.associated)
2348                 return -EINVAL;
2349
2350 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2351         printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer);
2352 #endif
2353
2354         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2355                             max(sizeof(struct ieee80211_mgmt),
2356                                 sizeof(struct ieee80211_tdls_data)) +
2357                             50 + /* supported rates */
2358                             7 + /* ext capab */
2359                             extra_ies_len +
2360                             sizeof(struct ieee80211_tdls_lnkie));
2361         if (!skb)
2362                 return -ENOMEM;
2363
2364         info = IEEE80211_SKB_CB(skb);
2365         skb_reserve(skb, local->hw.extra_tx_headroom);
2366
2367         switch (action_code) {
2368         case WLAN_TDLS_SETUP_REQUEST:
2369         case WLAN_TDLS_SETUP_RESPONSE:
2370         case WLAN_TDLS_SETUP_CONFIRM:
2371         case WLAN_TDLS_TEARDOWN:
2372         case WLAN_TDLS_DISCOVERY_REQUEST:
2373                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2374                                                      action_code, dialog_token,
2375                                                      status_code, skb);
2376                 send_direct = false;
2377                 break;
2378         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2379                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2380                                                  dialog_token, status_code,
2381                                                  skb);
2382                 send_direct = true;
2383                 break;
2384         default:
2385                 ret = -ENOTSUPP;
2386                 break;
2387         }
2388
2389         if (ret < 0)
2390                 goto fail;
2391
2392         if (extra_ies_len)
2393                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2394
2395         /* the TDLS link IE is always added last */
2396         switch (action_code) {
2397         case WLAN_TDLS_SETUP_REQUEST:
2398         case WLAN_TDLS_SETUP_CONFIRM:
2399         case WLAN_TDLS_TEARDOWN:
2400         case WLAN_TDLS_DISCOVERY_REQUEST:
2401                 /* we are the initiator */
2402                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2403                                            sdata->u.mgd.bssid);
2404                 break;
2405         case WLAN_TDLS_SETUP_RESPONSE:
2406         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2407                 /* we are the responder */
2408                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2409                                            sdata->u.mgd.bssid);
2410                 break;
2411         default:
2412                 ret = -ENOTSUPP;
2413                 goto fail;
2414         }
2415
2416         if (send_direct) {
2417                 ieee80211_tx_skb(sdata, skb);
2418                 return 0;
2419         }
2420
2421         /*
2422          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2423          * we should default to AC_VI.
2424          */
2425         switch (action_code) {
2426         case WLAN_TDLS_SETUP_REQUEST:
2427         case WLAN_TDLS_SETUP_RESPONSE:
2428                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2429                 skb->priority = 2;
2430                 break;
2431         default:
2432                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2433                 skb->priority = 5;
2434                 break;
2435         }
2436
2437         /* disable bottom halves when entering the Tx path */
2438         local_bh_disable();
2439         ret = ieee80211_subif_start_xmit(skb, dev);
2440         local_bh_enable();
2441
2442         return ret;
2443
2444 fail:
2445         dev_kfree_skb(skb);
2446         return ret;
2447 }
2448
2449 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2450                                u8 *peer, enum nl80211_tdls_operation oper)
2451 {
2452         struct sta_info *sta;
2453         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2454
2455         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2456                 return -ENOTSUPP;
2457
2458         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2459                 return -EINVAL;
2460
2461 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2462         printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer);
2463 #endif
2464
2465         switch (oper) {
2466         case NL80211_TDLS_ENABLE_LINK:
2467                 rcu_read_lock();
2468                 sta = sta_info_get(sdata, peer);
2469                 if (!sta) {
2470                         rcu_read_unlock();
2471                         return -ENOLINK;
2472                 }
2473
2474                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2475                 rcu_read_unlock();
2476                 break;
2477         case NL80211_TDLS_DISABLE_LINK:
2478                 return sta_info_destroy_addr(sdata, peer);
2479         case NL80211_TDLS_TEARDOWN:
2480         case NL80211_TDLS_SETUP:
2481         case NL80211_TDLS_DISCOVERY_REQ:
2482                 /* We don't support in-driver setup/teardown/discovery */
2483                 return -ENOTSUPP;
2484         default:
2485                 return -ENOTSUPP;
2486         }
2487
2488         return 0;
2489 }
2490
2491 struct cfg80211_ops mac80211_config_ops = {
2492         .add_virtual_intf = ieee80211_add_iface,
2493         .del_virtual_intf = ieee80211_del_iface,
2494         .change_virtual_intf = ieee80211_change_iface,
2495         .add_key = ieee80211_add_key,
2496         .del_key = ieee80211_del_key,
2497         .get_key = ieee80211_get_key,
2498         .set_default_key = ieee80211_config_default_key,
2499         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2500         .add_beacon = ieee80211_add_beacon,
2501         .set_beacon = ieee80211_set_beacon,
2502         .del_beacon = ieee80211_del_beacon,
2503         .add_station = ieee80211_add_station,
2504         .del_station = ieee80211_del_station,
2505         .change_station = ieee80211_change_station,
2506         .get_station = ieee80211_get_station,
2507         .dump_station = ieee80211_dump_station,
2508         .dump_survey = ieee80211_dump_survey,
2509 #ifdef CONFIG_MAC80211_MESH
2510         .add_mpath = ieee80211_add_mpath,
2511         .del_mpath = ieee80211_del_mpath,
2512         .change_mpath = ieee80211_change_mpath,
2513         .get_mpath = ieee80211_get_mpath,
2514         .dump_mpath = ieee80211_dump_mpath,
2515         .update_mesh_config = ieee80211_update_mesh_config,
2516         .get_mesh_config = ieee80211_get_mesh_config,
2517         .join_mesh = ieee80211_join_mesh,
2518         .leave_mesh = ieee80211_leave_mesh,
2519 #endif
2520         .change_bss = ieee80211_change_bss,
2521         .set_txq_params = ieee80211_set_txq_params,
2522         .set_channel = ieee80211_set_channel,
2523         .suspend = ieee80211_suspend,
2524         .resume = ieee80211_resume,
2525         .scan = ieee80211_scan,
2526         .sched_scan_start = ieee80211_sched_scan_start,
2527         .sched_scan_stop = ieee80211_sched_scan_stop,
2528         .auth = ieee80211_auth,
2529         .assoc = ieee80211_assoc,
2530         .deauth = ieee80211_deauth,
2531         .disassoc = ieee80211_disassoc,
2532         .join_ibss = ieee80211_join_ibss,
2533         .leave_ibss = ieee80211_leave_ibss,
2534         .set_wiphy_params = ieee80211_set_wiphy_params,
2535         .set_tx_power = ieee80211_set_tx_power,
2536         .get_tx_power = ieee80211_get_tx_power,
2537         .set_wds_peer = ieee80211_set_wds_peer,
2538         .rfkill_poll = ieee80211_rfkill_poll,
2539         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2540         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2541         .set_power_mgmt = ieee80211_set_power_mgmt,
2542         .set_bitrate_mask = ieee80211_set_bitrate_mask,
2543         .remain_on_channel = ieee80211_remain_on_channel,
2544         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2545         .mgmt_tx = ieee80211_mgmt_tx,
2546         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2547         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2548         .mgmt_frame_register = ieee80211_mgmt_frame_register,
2549         .set_antenna = ieee80211_set_antenna,
2550         .get_antenna = ieee80211_get_antenna,
2551         .set_ringparam = ieee80211_set_ringparam,
2552         .get_ringparam = ieee80211_get_ringparam,
2553         .set_rekey_data = ieee80211_set_rekey_data,
2554         .tdls_oper = ieee80211_tdls_oper,
2555         .tdls_mgmt = ieee80211_tdls_mgmt,
2556 };