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