net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  *
   6  * This file is GPLv2 as found in COPYING.
   7  */
   8
   9 #include <linux/ieee80211.h>
  10 #include <linux/nl80211.h>
  11 #include <linux/rtnetlink.h>
  12 #include <linux/slab.h>
  13 #include <net/net_namespace.h>
  14 #include <linux/rcupdate.h>
  15 #include <linux/if_ether.h>
  16 #include <net/cfg80211.h>
  17 #include "ieee80211_i.h"
  18 #include "driver-ops.h"
  19 #include "cfg.h"
  20 #include "rate.h"
  21 #include "mesh.h"
  22
  23 static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
  24                                               enum nl80211_iftype type,
  25                                               u32 *flags,
  26                                               struct vif_params *params)
  27 {
  28         struct ieee80211_local *local = wiphy_priv(wiphy);
  29         struct net_device *dev;
  30         struct ieee80211_sub_if_data *sdata;
  31         int err;
  32
  33         err = ieee80211_if_add(local, name, &dev, type, params);
  34         if (err)
  35                 return ERR_PTR(err);
  36
  37         if (type == NL80211_IFTYPE_MONITOR && flags) {
  38                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  39                 sdata->u.mntr_flags = *flags;
  40         }
  41
  42         return dev;
  43 }
  44
  45 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
  46 {
  47         ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
  48
  49         return 0;
  50 }
  51
  52 static int ieee80211_change_iface(struct wiphy *wiphy,
  53                                   struct net_device *dev,
  54                                   enum nl80211_iftype type, u32 *flags,
  55                                   struct vif_params *params)
  56 {
  57         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  58         int ret;
  59
  60         ret = ieee80211_if_change_type(sdata, type);
  61         if (ret)
  62                 return ret;
  63
  64         if (type == NL80211_IFTYPE_AP_VLAN &&
  65             params && params->use_4addr == 0)
  66                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  67         else if (type == NL80211_IFTYPE_STATION &&
  68                  params && params->use_4addr >= 0)
  69                 sdata->u.mgd.use_4addr = params->use_4addr;
  70
  71         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  72                 struct ieee80211_local *local = sdata->local;
  73
  74                 if (ieee80211_sdata_running(sdata)) {
  75                         /*
  76                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  77                          * changed while the interface is up.
  78                          * Else we would need to add a lot of cruft
  79                          * to update everything:
  80                          *      cooked_mntrs, monitor and all fif_* counters
  81                          *      reconfigure hardware
  82                          */
  83                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  84                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  85                                 return -EBUSY;
  86
  87                         ieee80211_adjust_monitor_flags(sdata, -1);
  88                         sdata->u.mntr_flags = *flags;
  89                         ieee80211_adjust_monitor_flags(sdata, 1);
  90
  91                         ieee80211_configure_filter(local);
  92                 } else {
  93                         /*
  94                          * Because the interface is down, ieee80211_do_stop
  95                          * and ieee80211_do_open take care of "everything"
  96                          * mentioned in the comment above.
  97                          */
  98                         sdata->u.mntr_flags = *flags;
  99                 }
 100         }
 101
 102         return 0;
 103 }
 104
 105 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 106                                   struct net_device *dev,
 107                                   u16 noack_map)
 108 {
 109         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 110
 111         sdata->noack_map = noack_map;
 112         return 0;
 113 }
 114
 115 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 116                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 117                              struct key_params *params)
 118 {
 119         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 120         struct sta_info *sta = NULL;
 121         struct ieee80211_key *key;
 122         int err;
 123
 124         if (!ieee80211_sdata_running(sdata))
 125                 return -ENETDOWN;
 126
 127         /* reject WEP and TKIP keys if WEP failed to initialize */
 128         switch (params->cipher) {
 129         case WLAN_CIPHER_SUITE_WEP40:
 130         case WLAN_CIPHER_SUITE_TKIP:
 131         case WLAN_CIPHER_SUITE_WEP104:
 132                 if (IS_ERR(sdata->local->wep_tx_tfm))
 133                         return -EINVAL;
 134                 break;
 135         default:
 136                 break;
 137         }
 138
 139         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 140                                   params->key, params->seq_len, params->seq);
 141         if (IS_ERR(key))
 142                 return PTR_ERR(key);
 143
 144         if (pairwise)
 145                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 146
 147         mutex_lock(&sdata->local->sta_mtx);
 148
 149         if (mac_addr) {
 150                 if (ieee80211_vif_is_mesh(&sdata->vif))
 151                         sta = sta_info_get(sdata, mac_addr);
 152                 else
 153                         sta = sta_info_get_bss(sdata, mac_addr);
 154                 if (!sta) {
 155                         ieee80211_key_free(sdata->local, key);
 156                         err = -ENOENT;
 157                         goto out_unlock;
 158                 }
 159         }
 160
 161         err = ieee80211_key_link(key, sdata, sta);
 162         if (err)
 163                 ieee80211_key_free(sdata->local, key);
 164
 165  out_unlock:
 166         mutex_unlock(&sdata->local->sta_mtx);
 167
 168         return err;
 169 }
 170
 171 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 172                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 173 {
 174         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 175         struct ieee80211_local *local = sdata->local;
 176         struct sta_info *sta;
 177         struct ieee80211_key *key = NULL;
 178         int ret;
 179
 180         mutex_lock(&local->sta_mtx);
 181         mutex_lock(&local->key_mtx);
 182
 183         if (mac_addr) {
 184                 ret = -ENOENT;
 185
 186                 sta = sta_info_get_bss(sdata, mac_addr);
 187                 if (!sta)
 188                         goto out_unlock;
 189
 190                 if (pairwise)
 191                         key = key_mtx_dereference(local, sta->ptk);
 192                 else
 193                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 194         } else
 195                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 196
 197         if (!key) {
 198                 ret = -ENOENT;
 199                 goto out_unlock;
 200         }
 201
 202         __ieee80211_key_free(key);
 203
 204         ret = 0;
 205  out_unlock:
 206         mutex_unlock(&local->key_mtx);
 207         mutex_unlock(&local->sta_mtx);
 208
 209         return ret;
 210 }
 211
 212 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 213                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 214                              void *cookie,
 215                              void (*callback)(void *cookie,
 216                                               struct key_params *params))
 217 {
 218         struct ieee80211_sub_if_data *sdata;
 219         struct sta_info *sta = NULL;
 220         u8 seq[6] = {0};
 221         struct key_params params;
 222         struct ieee80211_key *key = NULL;
 223         u64 pn64;
 224         u32 iv32;
 225         u16 iv16;
 226         int err = -ENOENT;
 227
 228         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 229
 230         rcu_read_lock();
 231
 232         if (mac_addr) {
 233                 sta = sta_info_get_bss(sdata, mac_addr);
 234                 if (!sta)
 235                         goto out;
 236
 237                 if (pairwise)
 238                         key = rcu_dereference(sta->ptk);
 239                 else if (key_idx < NUM_DEFAULT_KEYS)
 240                         key = rcu_dereference(sta->gtk[key_idx]);
 241         } else
 242                 key = rcu_dereference(sdata->keys[key_idx]);
 243
 244         if (!key)
 245                 goto out;
 246
 247         memset(&params, 0, sizeof(params));
 248
 249         params.cipher = key->conf.cipher;
 250
 251         switch (key->conf.cipher) {
 252         case WLAN_CIPHER_SUITE_TKIP:
 253                 iv32 = key->u.tkip.tx.iv32;
 254                 iv16 = key->u.tkip.tx.iv16;
 255
 256                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 257                         drv_get_tkip_seq(sdata->local,
 258                                          key->conf.hw_key_idx,
 259                                          &iv32, &iv16);
 260
 261                 seq[0] = iv16 & 0xff;
 262                 seq[1] = (iv16 >> 8) & 0xff;
 263                 seq[2] = iv32 & 0xff;
 264                 seq[3] = (iv32 >> 8) & 0xff;
 265                 seq[4] = (iv32 >> 16) & 0xff;
 266                 seq[5] = (iv32 >> 24) & 0xff;
 267                 params.seq = seq;
 268                 params.seq_len = 6;
 269                 break;
 270         case WLAN_CIPHER_SUITE_CCMP:
 271                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 272                 seq[0] = pn64;
 273                 seq[1] = pn64 >> 8;
 274                 seq[2] = pn64 >> 16;
 275                 seq[3] = pn64 >> 24;
 276                 seq[4] = pn64 >> 32;
 277                 seq[5] = pn64 >> 40;
 278                 params.seq = seq;
 279                 params.seq_len = 6;
 280                 break;
 281         case WLAN_CIPHER_SUITE_AES_CMAC:
 282                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 283                 seq[0] = pn64;
 284                 seq[1] = pn64 >> 8;
 285                 seq[2] = pn64 >> 16;
 286                 seq[3] = pn64 >> 24;
 287                 seq[4] = pn64 >> 32;
 288                 seq[5] = pn64 >> 40;
 289                 params.seq = seq;
 290                 params.seq_len = 6;
 291                 break;
 292         }
 293
 294         params.key = key->conf.key;
 295         params.key_len = key->conf.keylen;
 296
 297         callback(cookie, &params);
 298         err = 0;
 299
 300  out:
 301         rcu_read_unlock();
 302         return err;
 303 }
 304
 305 static int ieee80211_config_default_key(struct wiphy *wiphy,
 306                                         struct net_device *dev,
 307                                         u8 key_idx, bool uni,
 308                                         bool multi)
 309 {
 310         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 311
 312         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 313
 314         return 0;
 315 }
 316
 317 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 318                                              struct net_device *dev,
 319                                              u8 key_idx)
 320 {
 321         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 322
 323         ieee80211_set_default_mgmt_key(sdata, key_idx);
 324
 325         return 0;
 326 }
 327
 328 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
 329 {
 330         if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
 331                 struct ieee80211_supported_band *sband;
 332                 sband = sta->local->hw.wiphy->bands[
 333                                 sta->local->hw.conf.channel->band];
 334                 rate->legacy = sband->bitrates[idx].bitrate;
 335         } else
 336                 rate->mcs = idx;
 337 }
 338
 339 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 340 {
 341         struct ieee80211_sub_if_data *sdata = sta->sdata;
 342         struct timespec uptime;
 343
 344         sinfo->generation = sdata->local->sta_generation;
 345
 346         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 347                         STATION_INFO_RX_BYTES |
 348                         STATION_INFO_TX_BYTES |
 349                         STATION_INFO_RX_PACKETS |
 350                         STATION_INFO_TX_PACKETS |
 351                         STATION_INFO_TX_RETRIES |
 352                         STATION_INFO_TX_FAILED |
 353                         STATION_INFO_TX_BITRATE |
 354                         STATION_INFO_RX_BITRATE |
 355                         STATION_INFO_RX_DROP_MISC |
 356                         STATION_INFO_BSS_PARAM |
 357                         STATION_INFO_CONNECTED_TIME |
 358                         STATION_INFO_STA_FLAGS |
 359                         STATION_INFO_BEACON_LOSS_COUNT;
 360
 361         do_posix_clock_monotonic_gettime(&uptime);
 362         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 363
 364         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 365         sinfo->rx_bytes = sta->rx_bytes;
 366         sinfo->tx_bytes = sta->tx_bytes;
 367         sinfo->rx_packets = sta->rx_packets;
 368         sinfo->tx_packets = sta->tx_packets;
 369         sinfo->tx_retries = sta->tx_retry_count;
 370         sinfo->tx_failed = sta->tx_retry_failed;
 371         sinfo->rx_dropped_misc = sta->rx_dropped;
 372         sinfo->beacon_loss_count = sta->beacon_loss_count;
 373
 374         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 375             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 376                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 377                 sinfo->signal = (s8)sta->last_signal;
 378                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 379         }
 380
 381         sinfo->txrate.flags = 0;
 382         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 383                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 384         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 385                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 386         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 387                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 388         rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx);
 389
 390         sinfo->rxrate.flags = 0;
 391         if (sta->last_rx_rate_flag & RX_FLAG_HT)
 392                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
 393         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 394                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 395         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 396                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 397         rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
 398
 399         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 400 #ifdef CONFIG_MAC80211_MESH
 401                 sinfo->filled |= STATION_INFO_LLID |
 402                                  STATION_INFO_PLID |
 403                                  STATION_INFO_PLINK_STATE;
 404
 405                 sinfo->llid = le16_to_cpu(sta->llid);
 406                 sinfo->plid = le16_to_cpu(sta->plid);
 407                 sinfo->plink_state = sta->plink_state;
 408 #endif
 409         }
 410
 411         sinfo->bss_param.flags = 0;
 412         if (sdata->vif.bss_conf.use_cts_prot)
 413                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 414         if (sdata->vif.bss_conf.use_short_preamble)
 415                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 416         if (sdata->vif.bss_conf.use_short_slot)
 417                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 418         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 419         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 420
 421         sinfo->sta_flags.set = 0;
 422         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 423                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 424                                 BIT(NL80211_STA_FLAG_WME) |
 425                                 BIT(NL80211_STA_FLAG_MFP) |
 426                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 427                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 428         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 429                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 430         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 431                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 432         if (test_sta_flag(sta, WLAN_STA_WME))
 433                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 434         if (test_sta_flag(sta, WLAN_STA_MFP))
 435                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 436         if (test_sta_flag(sta, WLAN_STA_AUTH))
 437                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 438         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 439                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 440 }
 441
 442
 443 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 444                                  int idx, u8 *mac, struct station_info *sinfo)
 445 {
 446         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 447         struct sta_info *sta;
 448         int ret = -ENOENT;
 449
 450         rcu_read_lock();
 451
 452         sta = sta_info_get_by_idx(sdata, idx);
 453         if (sta) {
 454                 ret = 0;
 455                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 456                 sta_set_sinfo(sta, sinfo);
 457         }
 458
 459         rcu_read_unlock();
 460
 461         return ret;
 462 }
 463
 464 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 465                                  int idx, struct survey_info *survey)
 466 {
 467         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 468
 469         return drv_get_survey(local, idx, survey);
 470 }
 471
 472 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 473                                  u8 *mac, struct station_info *sinfo)
 474 {
 475         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 476         struct sta_info *sta;
 477         int ret = -ENOENT;
 478
 479         rcu_read_lock();
 480
 481         sta = sta_info_get_bss(sdata, mac);
 482         if (sta) {
 483                 ret = 0;
 484                 sta_set_sinfo(sta, sinfo);
 485         }
 486
 487         rcu_read_unlock();
 488
 489         return ret;
 490 }
 491
 492 static void ieee80211_config_ap_ssid(struct ieee80211_sub_if_data *sdata,
 493                                      struct beacon_parameters *params)
 494 {
 495         struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
 496
 497         bss_conf->ssid_len = params->ssid_len;
 498
 499         if (params->ssid_len)
 500                 memcpy(bss_conf->ssid, params->ssid, params->ssid_len);
 501
 502         bss_conf->hidden_ssid =
 503                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 504 }
 505
 506 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 507                                     u8 *resp, size_t resp_len)
 508 {
 509         struct sk_buff *new, *old;
 510
 511         if (!resp || !resp_len)
 512                 return -EINVAL;
 513
 514         old = rtnl_dereference(sdata->u.ap.probe_resp);
 515
 516         new = dev_alloc_skb(resp_len);
 517         if (!new)
 518                 return -ENOMEM;
 519
 520         memcpy(skb_put(new, resp_len), resp, resp_len);
 521
 522         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 523         synchronize_rcu();
 524
 525         if (old)
 526                 dev_kfree_skb(old);
 527
 528         return 0;
 529 }
 530
 531 /*
 532  * This handles both adding a beacon and setting new beacon info
 533  */
 534 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 535                                    struct beacon_parameters *params)
 536 {
 537         struct beacon_data *new, *old;
 538         int new_head_len, new_tail_len;
 539         int size;
 540         int err = -EINVAL;
 541         u32 changed = 0;
 542
 543         old = rtnl_dereference(sdata->u.ap.beacon);
 544
 545         /* head must not be zero-length */
 546         if (params->head && !params->head_len)
 547                 return -EINVAL;
 548
 549         /*
 550          * This is a kludge. beacon interval should really be part
 551          * of the beacon information.
 552          */
 553         if (params->interval &&
 554             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 555                 sdata->vif.bss_conf.beacon_int = params->interval;
 556                 ieee80211_bss_info_change_notify(sdata,
 557                                                  BSS_CHANGED_BEACON_INT);
 558         }
 559
 560         /* Need to have a beacon head if we don't have one yet */
 561         if (!params->head && !old)
 562                 return err;
 563
 564         /* sorry, no way to start beaconing without dtim period */
 565         if (!params->dtim_period && !old)
 566                 return err;
 567
 568         /* new or old head? */
 569         if (params->head)
 570                 new_head_len = params->head_len;
 571         else
 572                 new_head_len = old->head_len;
 573
 574         /* new or old tail? */
 575         if (params->tail || !old)
 576                 /* params->tail_len will be zero for !params->tail */
 577                 new_tail_len = params->tail_len;
 578         else
 579                 new_tail_len = old->tail_len;
 580
 581         size = sizeof(*new) + new_head_len + new_tail_len;
 582
 583         new = kzalloc(size, GFP_KERNEL);
 584         if (!new)
 585                 return -ENOMEM;
 586
 587         /* start filling the new info now */
 588
 589         /* new or old dtim period? */
 590         if (params->dtim_period)
 591                 new->dtim_period = params->dtim_period;
 592         else
 593                 new->dtim_period = old->dtim_period;
 594
 595         /*
 596          * pointers go into the block we allocated,
 597          * memory is | beacon_data | head | tail |
 598          */
 599         new->head = ((u8 *) new) + sizeof(*new);
 600         new->tail = new->head + new_head_len;
 601         new->head_len = new_head_len;
 602         new->tail_len = new_tail_len;
 603
 604         /* copy in head */
 605         if (params->head)
 606                 memcpy(new->head, params->head, new_head_len);
 607         else
 608                 memcpy(new->head, old->head, new_head_len);
 609
 610         /* copy in optional tail */
 611         if (params->tail)
 612                 memcpy(new->tail, params->tail, new_tail_len);
 613         else
 614                 if (old)
 615                         memcpy(new->tail, old->tail, new_tail_len);
 616
 617         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 618
 619         rcu_assign_pointer(sdata->u.ap.beacon, new);
 620
 621         synchronize_rcu();
 622
 623         kfree(old);
 624
 625         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 626                                        params->probe_resp_len);
 627         if (!err)
 628                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 629
 630         ieee80211_config_ap_ssid(sdata, params);
 631         changed |= BSS_CHANGED_BEACON_ENABLED |
 632                    BSS_CHANGED_BEACON |
 633                    BSS_CHANGED_SSID;
 634
 635         ieee80211_bss_info_change_notify(sdata, changed);
 636         return 0;
 637 }
 638
 639 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 640                                 struct beacon_parameters *params)
 641 {
 642         struct ieee80211_sub_if_data *sdata;
 643         struct beacon_data *old;
 644         struct ieee80211_sub_if_data *vlan;
 645         int ret;
 646
 647         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 648
 649         old = rtnl_dereference(sdata->u.ap.beacon);
 650         if (old)
 651                 return -EALREADY;
 652
 653         ret = ieee80211_config_beacon(sdata, params);
 654         if (ret)
 655                 return ret;
 656
 657         /*
 658          * Apply control port protocol, this allows us to
 659          * not encrypt dynamic WEP control frames.
 660          */
 661         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 662         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 663         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 664                 vlan->control_port_protocol =
 665                         params->crypto.control_port_ethertype;
 666                 vlan->control_port_no_encrypt =
 667                         params->crypto.control_port_no_encrypt;
 668         }
 669
 670         return 0;
 671 }
 672
 673 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 674                                 struct beacon_parameters *params)
 675 {
 676         struct ieee80211_sub_if_data *sdata;
 677         struct beacon_data *old;
 678
 679         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 680
 681         old = rtnl_dereference(sdata->u.ap.beacon);
 682         if (!old)
 683                 return -ENOENT;
 684
 685         return ieee80211_config_beacon(sdata, params);
 686 }
 687
 688 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 689 {
 690         struct ieee80211_sub_if_data *sdata;
 691         struct beacon_data *old;
 692
 693         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 694
 695         old = rtnl_dereference(sdata->u.ap.beacon);
 696         if (!old)
 697                 return -ENOENT;
 698
 699         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 700         synchronize_rcu();
 701         kfree(old);
 702
 703         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 704         return 0;
 705 }
 706
 707 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 708 struct iapp_layer2_update {
 709         u8 da[ETH_ALEN];        /* broadcast */
 710         u8 sa[ETH_ALEN];        /* STA addr */
 711         __be16 len;             /* 6 */
 712         u8 dsap;                /* 0 */
 713         u8 ssap;                /* 0 */
 714         u8 control;
 715         u8 xid_info[3];
 716 } __packed;
 717
 718 static void ieee80211_send_layer2_update(struct sta_info *sta)
 719 {
 720         struct iapp_layer2_update *msg;
 721         struct sk_buff *skb;
 722
 723         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 724          * bridge devices */
 725
 726         skb = dev_alloc_skb(sizeof(*msg));
 727         if (!skb)
 728                 return;
 729         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 730
 731         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 732          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 733
 734         memset(msg->da, 0xff, ETH_ALEN);
 735         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 736         msg->len = htons(6);
 737         msg->dsap = 0;
 738         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 739         msg->control = 0xaf;    /* XID response lsb.1111F101.
 740                                  * F=0 (no poll command; unsolicited frame) */
 741         msg->xid_info[0] = 0x81;        /* XID format identifier */
 742         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 743         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 744
 745         skb->dev = sta->sdata->dev;
 746         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 747         memset(skb->cb, 0, sizeof(skb->cb));
 748         netif_rx_ni(skb);
 749 }
 750
 751 static int sta_apply_parameters(struct ieee80211_local *local,
 752                                 struct sta_info *sta,
 753                                 struct station_parameters *params)
 754 {
 755         int ret = 0;
 756         u32 rates;
 757         int i, j;
 758         struct ieee80211_supported_band *sband;
 759         struct ieee80211_sub_if_data *sdata = sta->sdata;
 760         u32 mask, set;
 761
 762         sband = local->hw.wiphy->bands[local->oper_channel->band];
 763
 764         mask = params->sta_flags_mask;
 765         set = params->sta_flags_set;
 766
 767         /*
 768          * In mesh mode, we can clear AUTHENTICATED flag but must
 769          * also make ASSOCIATED follow appropriately for the driver
 770          * API. See also below, after AUTHORIZED changes.
 771          */
 772         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 773                 /* cfg80211 should not allow this in non-mesh modes */
 774                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
 775                         return -EINVAL;
 776
 777                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 778                     !test_sta_flag(sta, WLAN_STA_AUTH)) {
 779                         ret = sta_info_move_state_checked(sta,
 780                                         IEEE80211_STA_AUTH);
 781                         if (ret)
 782                                 return ret;
 783                         ret = sta_info_move_state_checked(sta,
 784                                         IEEE80211_STA_ASSOC);
 785                         if (ret)
 786                                 return ret;
 787                 }
 788         }
 789
 790         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 791                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 792                         ret = sta_info_move_state_checked(sta,
 793                                         IEEE80211_STA_AUTHORIZED);
 794                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 795                         ret = sta_info_move_state_checked(sta,
 796                                         IEEE80211_STA_ASSOC);
 797                 if (ret)
 798                         return ret;
 799         }
 800
 801         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 802                 /* cfg80211 should not allow this in non-mesh modes */
 803                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
 804                         return -EINVAL;
 805
 806                 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
 807                     test_sta_flag(sta, WLAN_STA_AUTH)) {
 808                         ret = sta_info_move_state_checked(sta,
 809                                         IEEE80211_STA_AUTH);
 810                         if (ret)
 811                                 return ret;
 812                         ret = sta_info_move_state_checked(sta,
 813                                         IEEE80211_STA_NONE);
 814                         if (ret)
 815                                 return ret;
 816                 }
 817         }
 818
 819
 820         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 821                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 822                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
 823                 else
 824                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
 825         }
 826
 827         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 828                 if (set & BIT(NL80211_STA_FLAG_WME)) {
 829                         set_sta_flag(sta, WLAN_STA_WME);
 830                         sta->sta.wme = true;
 831                 } else {
 832                         clear_sta_flag(sta, WLAN_STA_WME);
 833                         sta->sta.wme = false;
 834                 }
 835         }
 836
 837         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 838                 if (set & BIT(NL80211_STA_FLAG_MFP))
 839                         set_sta_flag(sta, WLAN_STA_MFP);
 840                 else
 841                         clear_sta_flag(sta, WLAN_STA_MFP);
 842         }
 843
 844         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
 845                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
 846                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
 847                 else
 848                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
 849         }
 850
 851         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
 852                 sta->sta.uapsd_queues = params->uapsd_queues;
 853                 sta->sta.max_sp = params->max_sp;
 854         }
 855
 856         /*
 857          * cfg80211 validates this (1-2007) and allows setting the AID
 858          * only when creating a new station entry
 859          */
 860         if (params->aid)
 861                 sta->sta.aid = params->aid;
 862
 863         /*
 864          * FIXME: updating the following information is racy when this
 865          *        function is called from ieee80211_change_station().
 866          *        However, all this information should be static so
 867          *        maybe we should just reject attemps to change it.
 868          */
 869
 870         if (params->listen_interval >= 0)
 871                 sta->listen_interval = params->listen_interval;
 872
 873         if (params->supported_rates) {
 874                 rates = 0;
 875
 876                 for (i = 0; i < params->supported_rates_len; i++) {
 877                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 878                         for (j = 0; j < sband->n_bitrates; j++) {
 879                                 if (sband->bitrates[j].bitrate == rate)
 880                                         rates |= BIT(j);
 881                         }
 882                 }
 883                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 884         }
 885
 886         if (params->ht_capa)
 887                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
 888                                                   params->ht_capa,
 889                                                   &sta->sta.ht_cap);
 890
 891         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 892 #ifdef CONFIG_MAC80211_MESH
 893                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
 894                         switch (params->plink_state) {
 895                         case NL80211_PLINK_LISTEN:
 896                         case NL80211_PLINK_ESTAB:
 897                         case NL80211_PLINK_BLOCKED:
 898                                 sta->plink_state = params->plink_state;
 899                                 break;
 900                         default:
 901                                 /*  nothing  */
 902                                 break;
 903                         }
 904                 else
 905                         switch (params->plink_action) {
 906                         case PLINK_ACTION_OPEN:
 907                                 mesh_plink_open(sta);
 908                                 break;
 909                         case PLINK_ACTION_BLOCK:
 910                                 mesh_plink_block(sta);
 911                                 break;
 912                         }
 913 #endif
 914         }
 915
 916         return 0;
 917 }
 918
 919 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 920                                  u8 *mac, struct station_parameters *params)
 921 {
 922         struct ieee80211_local *local = wiphy_priv(wiphy);
 923         struct sta_info *sta;
 924         struct ieee80211_sub_if_data *sdata;
 925         int err;
 926         int layer2_update;
 927
 928         if (params->vlan) {
 929                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 930
 931                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 932                     sdata->vif.type != NL80211_IFTYPE_AP)
 933                         return -EINVAL;
 934         } else
 935                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 936
 937         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 938                 return -EINVAL;
 939
 940         if (is_multicast_ether_addr(mac))
 941                 return -EINVAL;
 942
 943         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 944         if (!sta)
 945                 return -ENOMEM;
 946
 947         sta_info_move_state(sta, IEEE80211_STA_AUTH);
 948         sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 949
 950         err = sta_apply_parameters(local, sta, params);
 951         if (err) {
 952                 sta_info_free(local, sta);
 953                 return err;
 954         }
 955
 956         /*
 957          * for TDLS, rate control should be initialized only when supported
 958          * rates are known.
 959          */
 960         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 961                 rate_control_rate_init(sta);
 962
 963         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 964                 sdata->vif.type == NL80211_IFTYPE_AP;
 965
 966         err = sta_info_insert_rcu(sta);
 967         if (err) {
 968                 rcu_read_unlock();
 969                 return err;
 970         }
 971
 972         if (layer2_update)
 973                 ieee80211_send_layer2_update(sta);
 974
 975         rcu_read_unlock();
 976
 977         return 0;
 978 }
 979
 980 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 981                                  u8 *mac)
 982 {
 983         struct ieee80211_local *local = wiphy_priv(wiphy);
 984         struct ieee80211_sub_if_data *sdata;
 985
 986         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 987
 988         if (mac)
 989                 return sta_info_destroy_addr_bss(sdata, mac);
 990
 991         sta_info_flush(local, sdata);
 992         return 0;
 993 }
 994
 995 static int ieee80211_change_station(struct wiphy *wiphy,
 996                                     struct net_device *dev,
 997                                     u8 *mac,
 998                                     struct station_parameters *params)
 999 {
1000         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1001         struct ieee80211_local *local = wiphy_priv(wiphy);
1002         struct sta_info *sta;
1003         struct ieee80211_sub_if_data *vlansdata;
1004         int err;
1005
1006         mutex_lock(&local->sta_mtx);
1007
1008         sta = sta_info_get_bss(sdata, mac);
1009         if (!sta) {
1010                 mutex_unlock(&local->sta_mtx);
1011                 return -ENOENT;
1012         }
1013
1014         /* in station mode, supported rates are only valid with TDLS */
1015         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1016             params->supported_rates &&
1017             !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1018                 mutex_unlock(&local->sta_mtx);
1019                 return -EINVAL;
1020         }
1021
1022         if (params->vlan && params->vlan != sta->sdata->dev) {
1023                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1024
1025                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1026                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
1027                         mutex_unlock(&local->sta_mtx);
1028                         return -EINVAL;
1029                 }
1030
1031                 if (params->vlan->ieee80211_ptr->use_4addr) {
1032                         if (vlansdata->u.vlan.sta) {
1033                                 mutex_unlock(&local->sta_mtx);
1034                                 return -EBUSY;
1035                         }
1036
1037                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1038                 }
1039
1040                 sta->sdata = vlansdata;
1041                 ieee80211_send_layer2_update(sta);
1042         }
1043
1044         err = sta_apply_parameters(local, sta, params);
1045         if (err) {
1046                 mutex_unlock(&local->sta_mtx);
1047                 return err;
1048         }
1049
1050         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1051                 rate_control_rate_init(sta);
1052
1053         mutex_unlock(&local->sta_mtx);
1054
1055         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1056             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
1057                 ieee80211_recalc_ps(local, -1);
1058
1059         return 0;
1060 }
1061
1062 #ifdef CONFIG_MAC80211_MESH
1063 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1064                                  u8 *dst, u8 *next_hop)
1065 {
1066         struct ieee80211_sub_if_data *sdata;
1067         struct mesh_path *mpath;
1068         struct sta_info *sta;
1069         int err;
1070
1071         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1072
1073         rcu_read_lock();
1074         sta = sta_info_get(sdata, next_hop);
1075         if (!sta) {
1076                 rcu_read_unlock();
1077                 return -ENOENT;
1078         }
1079
1080         err = mesh_path_add(dst, sdata);
1081         if (err) {
1082                 rcu_read_unlock();
1083                 return err;
1084         }
1085
1086         mpath = mesh_path_lookup(dst, sdata);
1087         if (!mpath) {
1088                 rcu_read_unlock();
1089                 return -ENXIO;
1090         }
1091         mesh_path_fix_nexthop(mpath, sta);
1092
1093         rcu_read_unlock();
1094         return 0;
1095 }
1096
1097 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1098                                  u8 *dst)
1099 {
1100         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1101
1102         if (dst)
1103                 return mesh_path_del(dst, sdata);
1104
1105         mesh_path_flush_by_iface(sdata);
1106         return 0;
1107 }
1108
1109 static int ieee80211_change_mpath(struct wiphy *wiphy,
1110                                     struct net_device *dev,
1111                                     u8 *dst, u8 *next_hop)
1112 {
1113         struct ieee80211_sub_if_data *sdata;
1114         struct mesh_path *mpath;
1115         struct sta_info *sta;
1116
1117         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1118
1119         rcu_read_lock();
1120
1121         sta = sta_info_get(sdata, next_hop);
1122         if (!sta) {
1123                 rcu_read_unlock();
1124                 return -ENOENT;
1125         }
1126
1127         mpath = mesh_path_lookup(dst, sdata);
1128         if (!mpath) {
1129                 rcu_read_unlock();
1130                 return -ENOENT;
1131         }
1132
1133         mesh_path_fix_nexthop(mpath, sta);
1134
1135         rcu_read_unlock();
1136         return 0;
1137 }
1138
1139 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1140                             struct mpath_info *pinfo)
1141 {
1142         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1143
1144         if (next_hop_sta)
1145                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1146         else
1147                 memset(next_hop, 0, ETH_ALEN);
1148
1149         pinfo->generation = mesh_paths_generation;
1150
1151         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1152                         MPATH_INFO_SN |
1153                         MPATH_INFO_METRIC |
1154                         MPATH_INFO_EXPTIME |
1155                         MPATH_INFO_DISCOVERY_TIMEOUT |
1156                         MPATH_INFO_DISCOVERY_RETRIES |
1157                         MPATH_INFO_FLAGS;
1158
1159         pinfo->frame_qlen = mpath->frame_queue.qlen;
1160         pinfo->sn = mpath->sn;
1161         pinfo->metric = mpath->metric;
1162         if (time_before(jiffies, mpath->exp_time))
1163                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1164         pinfo->discovery_timeout =
1165                         jiffies_to_msecs(mpath->discovery_timeout);
1166         pinfo->discovery_retries = mpath->discovery_retries;
1167         pinfo->flags = 0;
1168         if (mpath->flags & MESH_PATH_ACTIVE)
1169                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1170         if (mpath->flags & MESH_PATH_RESOLVING)
1171                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1172         if (mpath->flags & MESH_PATH_SN_VALID)
1173                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1174         if (mpath->flags & MESH_PATH_FIXED)
1175                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1176         if (mpath->flags & MESH_PATH_RESOLVING)
1177                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1178
1179         pinfo->flags = mpath->flags;
1180 }
1181
1182 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1183                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1184
1185 {
1186         struct ieee80211_sub_if_data *sdata;
1187         struct mesh_path *mpath;
1188
1189         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1190
1191         rcu_read_lock();
1192         mpath = mesh_path_lookup(dst, sdata);
1193         if (!mpath) {
1194                 rcu_read_unlock();
1195                 return -ENOENT;
1196         }
1197         memcpy(dst, mpath->dst, ETH_ALEN);
1198         mpath_set_pinfo(mpath, next_hop, pinfo);
1199         rcu_read_unlock();
1200         return 0;
1201 }
1202
1203 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1204                                  int idx, u8 *dst, u8 *next_hop,
1205                                  struct mpath_info *pinfo)
1206 {
1207         struct ieee80211_sub_if_data *sdata;
1208         struct mesh_path *mpath;
1209
1210         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1211
1212         rcu_read_lock();
1213         mpath = mesh_path_lookup_by_idx(idx, sdata);
1214         if (!mpath) {
1215                 rcu_read_unlock();
1216                 return -ENOENT;
1217         }
1218         memcpy(dst, mpath->dst, ETH_ALEN);
1219         mpath_set_pinfo(mpath, next_hop, pinfo);
1220         rcu_read_unlock();
1221         return 0;
1222 }
1223
1224 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1225                                 struct net_device *dev,
1226                                 struct mesh_config *conf)
1227 {
1228         struct ieee80211_sub_if_data *sdata;
1229         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1230
1231         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1232         return 0;
1233 }
1234
1235 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1236 {
1237         return (mask >> (parm-1)) & 0x1;
1238 }
1239
1240 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1241                 const struct mesh_setup *setup)
1242 {
1243         u8 *new_ie;
1244         const u8 *old_ie;
1245         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1246                                         struct ieee80211_sub_if_data, u.mesh);
1247
1248         /* allocate information elements */
1249         new_ie = NULL;
1250         old_ie = ifmsh->ie;
1251
1252         if (setup->ie_len) {
1253                 new_ie = kmemdup(setup->ie, setup->ie_len,
1254                                 GFP_KERNEL);
1255                 if (!new_ie)
1256                         return -ENOMEM;
1257         }
1258         ifmsh->ie_len = setup->ie_len;
1259         ifmsh->ie = new_ie;
1260         kfree(old_ie);
1261
1262         /* now copy the rest of the setup parameters */
1263         ifmsh->mesh_id_len = setup->mesh_id_len;
1264         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1265         ifmsh->mesh_pp_id = setup->path_sel_proto;
1266         ifmsh->mesh_pm_id = setup->path_metric;
1267         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1268         if (setup->is_authenticated)
1269                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1270         if (setup->is_secure)
1271                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1272
1273         /* mcast rate setting in Mesh Node */
1274         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1275                                                 sizeof(setup->mcast_rate));
1276
1277         return 0;
1278 }
1279
1280 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1281                                         struct net_device *dev, u32 mask,
1282                                         const struct mesh_config *nconf)
1283 {
1284         struct mesh_config *conf;
1285         struct ieee80211_sub_if_data *sdata;
1286         struct ieee80211_if_mesh *ifmsh;
1287
1288         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1289         ifmsh = &sdata->u.mesh;
1290
1291         /* Set the config options which we are interested in setting */
1292         conf = &(sdata->u.mesh.mshcfg);
1293         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1294                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1295         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1296                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1297         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1298                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1299         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1300                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1301         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1302                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1303         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1304                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1305         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1306                 conf->dot11MeshTTL = nconf->element_ttl;
1307         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1308                 conf->auto_open_plinks = nconf->auto_open_plinks;
1309         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1310                 conf->dot11MeshHWMPmaxPREQretries =
1311                         nconf->dot11MeshHWMPmaxPREQretries;
1312         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1313                 conf->path_refresh_time = nconf->path_refresh_time;
1314         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1315                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1316         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1317                 conf->dot11MeshHWMPactivePathTimeout =
1318                         nconf->dot11MeshHWMPactivePathTimeout;
1319         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1320                 conf->dot11MeshHWMPpreqMinInterval =
1321                         nconf->dot11MeshHWMPpreqMinInterval;
1322         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1323                 conf->dot11MeshHWMPperrMinInterval =
1324                         nconf->dot11MeshHWMPperrMinInterval;
1325         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1326                            mask))
1327                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1328                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1329         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1330                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1331                 ieee80211_mesh_root_setup(ifmsh);
1332         }
1333         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1334                 /* our current gate announcement implementation rides on root
1335                  * announcements, so require this ifmsh to also be a root node
1336                  * */
1337                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1338                     !conf->dot11MeshHWMPRootMode) {
1339                         conf->dot11MeshHWMPRootMode = 1;
1340                         ieee80211_mesh_root_setup(ifmsh);
1341                 }
1342                 conf->dot11MeshGateAnnouncementProtocol =
1343                         nconf->dot11MeshGateAnnouncementProtocol;
1344         }
1345         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
1346                 conf->dot11MeshHWMPRannInterval =
1347                         nconf->dot11MeshHWMPRannInterval;
1348         }
1349         return 0;
1350 }
1351
1352 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1353                                const struct mesh_config *conf,
1354                                const struct mesh_setup *setup)
1355 {
1356         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1357         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1358         int err;
1359
1360         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1361         err = copy_mesh_setup(ifmsh, setup);
1362         if (err)
1363                 return err;
1364         ieee80211_start_mesh(sdata);
1365
1366         return 0;
1367 }
1368
1369 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1370 {
1371         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1372
1373         ieee80211_stop_mesh(sdata);
1374
1375         return 0;
1376 }
1377 #endif
1378
1379 static int ieee80211_change_bss(struct wiphy *wiphy,
1380                                 struct net_device *dev,
1381                                 struct bss_parameters *params)
1382 {
1383         struct ieee80211_sub_if_data *sdata;
1384         u32 changed = 0;
1385
1386         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1387
1388         if (params->use_cts_prot >= 0) {
1389                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1390                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1391         }
1392         if (params->use_short_preamble >= 0) {
1393                 sdata->vif.bss_conf.use_short_preamble =
1394                         params->use_short_preamble;
1395                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1396         }
1397
1398         if (!sdata->vif.bss_conf.use_short_slot &&
1399             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1400                 sdata->vif.bss_conf.use_short_slot = true;
1401                 changed |= BSS_CHANGED_ERP_SLOT;
1402         }
1403
1404         if (params->use_short_slot_time >= 0) {
1405                 sdata->vif.bss_conf.use_short_slot =
1406                         params->use_short_slot_time;
1407                 changed |= BSS_CHANGED_ERP_SLOT;
1408         }
1409
1410         if (params->basic_rates) {
1411                 int i, j;
1412                 u32 rates = 0;
1413                 struct ieee80211_local *local = wiphy_priv(wiphy);
1414                 struct ieee80211_supported_band *sband =
1415                         wiphy->bands[local->oper_channel->band];
1416
1417                 for (i = 0; i < params->basic_rates_len; i++) {
1418                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1419                         for (j = 0; j < sband->n_bitrates; j++) {
1420                                 if (sband->bitrates[j].bitrate == rate)
1421                                         rates |= BIT(j);
1422                         }
1423                 }
1424                 sdata->vif.bss_conf.basic_rates = rates;
1425                 changed |= BSS_CHANGED_BASIC_RATES;
1426         }
1427
1428         if (params->ap_isolate >= 0) {
1429                 if (params->ap_isolate)
1430                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1431                 else
1432                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1433         }
1434
1435         if (params->ht_opmode >= 0) {
1436                 sdata->vif.bss_conf.ht_operation_mode =
1437                         (u16) params->ht_opmode;
1438                 changed |= BSS_CHANGED_HT;
1439         }
1440
1441         ieee80211_bss_info_change_notify(sdata, changed);
1442
1443         return 0;
1444 }
1445
1446 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1447                                     struct net_device *dev,
1448                                     struct ieee80211_txq_params *params)
1449 {
1450         struct ieee80211_local *local = wiphy_priv(wiphy);
1451         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1452         struct ieee80211_tx_queue_params p;
1453
1454         if (!local->ops->conf_tx)
1455                 return -EOPNOTSUPP;
1456
1457         memset(&p, 0, sizeof(p));
1458         p.aifs = params->aifs;
1459         p.cw_max = params->cwmax;
1460         p.cw_min = params->cwmin;
1461         p.txop = params->txop;
1462
1463         /*
1464          * Setting tx queue params disables u-apsd because it's only
1465          * called in master mode.
1466          */
1467         p.uapsd = false;
1468
1469         if (params->queue >= local->hw.queues)
1470                 return -EINVAL;
1471
1472         sdata->tx_conf[params->queue] = p;
1473         if (drv_conf_tx(local, sdata, params->queue, &p)) {
1474                 wiphy_debug(local->hw.wiphy,
1475                             "failed to set TX queue parameters for queue %d\n",
1476                             params->queue);
1477                 return -EINVAL;
1478         }
1479
1480         return 0;
1481 }
1482
1483 static int ieee80211_set_channel(struct wiphy *wiphy,
1484                                  struct net_device *netdev,
1485                                  struct ieee80211_channel *chan,
1486                                  enum nl80211_channel_type channel_type)
1487 {
1488         struct ieee80211_local *local = wiphy_priv(wiphy);
1489         struct ieee80211_sub_if_data *sdata = NULL;
1490         struct ieee80211_channel *old_oper;
1491         enum nl80211_channel_type old_oper_type;
1492         enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1493
1494         if (netdev)
1495                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1496
1497         switch (ieee80211_get_channel_mode(local, NULL)) {
1498         case CHAN_MODE_HOPPING:
1499                 return -EBUSY;
1500         case CHAN_MODE_FIXED:
1501                 if (local->oper_channel != chan)
1502                         return -EBUSY;
1503                 if (!sdata && local->_oper_channel_type == channel_type)
1504                         return 0;
1505                 break;
1506         case CHAN_MODE_UNDEFINED:
1507                 break;
1508         }
1509
1510         if (sdata)
1511                 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1512         old_oper_type = local->_oper_channel_type;
1513
1514         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1515                 return -EBUSY;
1516
1517         old_oper = local->oper_channel;
1518         local->oper_channel = chan;
1519
1520         /* Update driver if changes were actually made. */
1521         if ((old_oper != local->oper_channel) ||
1522             (old_oper_type != local->_oper_channel_type))
1523                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1524
1525         if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1526             old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1527                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1528
1529         return 0;
1530 }
1531
1532 #ifdef CONFIG_PM
1533 static int ieee80211_suspend(struct wiphy *wiphy,
1534                              struct cfg80211_wowlan *wowlan)
1535 {
1536         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1537 }
1538
1539 static int ieee80211_resume(struct wiphy *wiphy)
1540 {
1541         return __ieee80211_resume(wiphy_priv(wiphy));
1542 }
1543 #else
1544 #define ieee80211_suspend NULL
1545 #define ieee80211_resume NULL
1546 #endif
1547
1548 static int ieee80211_scan(struct wiphy *wiphy,
1549                           struct net_device *dev,
1550                           struct cfg80211_scan_request *req)
1551 {
1552         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1553
1554         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1555         case NL80211_IFTYPE_STATION:
1556         case NL80211_IFTYPE_ADHOC:
1557         case NL80211_IFTYPE_MESH_POINT:
1558         case NL80211_IFTYPE_P2P_CLIENT:
1559                 break;
1560         case NL80211_IFTYPE_P2P_GO:
1561                 if (sdata->local->ops->hw_scan)
1562                         break;
1563                 /*
1564                  * FIXME: implement NoA while scanning in software,
1565                  * for now fall through to allow scanning only when
1566                  * beaconing hasn't been configured yet
1567                  */
1568         case NL80211_IFTYPE_AP:
1569                 if (sdata->u.ap.beacon)
1570                         return -EOPNOTSUPP;
1571                 break;
1572         default:
1573                 return -EOPNOTSUPP;
1574         }
1575
1576         return ieee80211_request_scan(sdata, req);
1577 }
1578
1579 static int
1580 ieee80211_sched_scan_start(struct wiphy *wiphy,
1581                            struct net_device *dev,
1582                            struct cfg80211_sched_scan_request *req)
1583 {
1584         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1585
1586         if (!sdata->local->ops->sched_scan_start)
1587                 return -EOPNOTSUPP;
1588
1589         return ieee80211_request_sched_scan_start(sdata, req);
1590 }
1591
1592 static int
1593 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1594 {
1595         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1596
1597         if (!sdata->local->ops->sched_scan_stop)
1598                 return -EOPNOTSUPP;
1599
1600         return ieee80211_request_sched_scan_stop(sdata);
1601 }
1602
1603 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1604                           struct cfg80211_auth_request *req)
1605 {
1606         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1607 }
1608
1609 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1610                            struct cfg80211_assoc_request *req)
1611 {
1612         struct ieee80211_local *local = wiphy_priv(wiphy);
1613         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1614
1615         switch (ieee80211_get_channel_mode(local, sdata)) {
1616         case CHAN_MODE_HOPPING:
1617                 return -EBUSY;
1618         case CHAN_MODE_FIXED:
1619                 if (local->oper_channel == req->bss->channel)
1620                         break;
1621                 return -EBUSY;
1622         case CHAN_MODE_UNDEFINED:
1623                 break;
1624         }
1625
1626         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1627 }
1628
1629 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1630                             struct cfg80211_deauth_request *req,
1631                             void *cookie)
1632 {
1633         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1634                                     req, cookie);
1635 }
1636
1637 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1638                               struct cfg80211_disassoc_request *req,
1639                               void *cookie)
1640 {
1641         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1642                                       req, cookie);
1643 }
1644
1645 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1646                                struct cfg80211_ibss_params *params)
1647 {
1648         struct ieee80211_local *local = wiphy_priv(wiphy);
1649         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1650
1651         switch (ieee80211_get_channel_mode(local, sdata)) {
1652         case CHAN_MODE_HOPPING:
1653                 return -EBUSY;
1654         case CHAN_MODE_FIXED:
1655                 if (!params->channel_fixed)
1656                         return -EBUSY;
1657                 if (local->oper_channel == params->channel)
1658                         break;
1659                 return -EBUSY;
1660         case CHAN_MODE_UNDEFINED:
1661                 break;
1662         }
1663
1664         return ieee80211_ibss_join(sdata, params);
1665 }
1666
1667 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1668 {
1669         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1670
1671         return ieee80211_ibss_leave(sdata);
1672 }
1673
1674 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1675 {
1676         struct ieee80211_local *local = wiphy_priv(wiphy);
1677         int err;
1678
1679         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1680                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1681
1682                 if (err)
1683                         return err;
1684         }
1685
1686         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1687                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1688
1689                 if (err)
1690                         return err;
1691         }
1692
1693         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1694                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1695
1696                 if (err)
1697                         return err;
1698         }
1699
1700         if (changed & WIPHY_PARAM_RETRY_SHORT)
1701                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1702         if (changed & WIPHY_PARAM_RETRY_LONG)
1703                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1704         if (changed &
1705             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1706                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1707
1708         return 0;
1709 }
1710
1711 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1712                                   enum nl80211_tx_power_setting type, int mbm)
1713 {
1714         struct ieee80211_local *local = wiphy_priv(wiphy);
1715         struct ieee80211_channel *chan = local->hw.conf.channel;
1716         u32 changes = 0;
1717
1718         switch (type) {
1719         case NL80211_TX_POWER_AUTOMATIC:
1720                 local->user_power_level = -1;
1721                 break;
1722         case NL80211_TX_POWER_LIMITED:
1723                 if (mbm < 0 || (mbm % 100))
1724                         return -EOPNOTSUPP;
1725                 local->user_power_level = MBM_TO_DBM(mbm);
1726                 break;
1727         case NL80211_TX_POWER_FIXED:
1728                 if (mbm < 0 || (mbm % 100))
1729                         return -EOPNOTSUPP;
1730                 /* TODO: move to cfg80211 when it knows the channel */
1731                 if (MBM_TO_DBM(mbm) > chan->max_power)
1732                         return -EINVAL;
1733                 local->user_power_level = MBM_TO_DBM(mbm);
1734                 break;
1735         }
1736
1737         ieee80211_hw_config(local, changes);
1738
1739         return 0;
1740 }
1741
1742 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1743 {
1744         struct ieee80211_local *local = wiphy_priv(wiphy);
1745
1746         *dbm = local->hw.conf.power_level;
1747
1748         return 0;
1749 }
1750
1751 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1752                                   const u8 *addr)
1753 {
1754         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1755
1756         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1757
1758         return 0;
1759 }
1760
1761 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1762 {
1763         struct ieee80211_local *local = wiphy_priv(wiphy);
1764
1765         drv_rfkill_poll(local);
1766 }
1767
1768 #ifdef CONFIG_NL80211_TESTMODE
1769 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1770 {
1771         struct ieee80211_local *local = wiphy_priv(wiphy);
1772
1773         if (!local->ops->testmode_cmd)
1774                 return -EOPNOTSUPP;
1775
1776         return local->ops->testmode_cmd(&local->hw, data, len);
1777 }
1778
1779 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1780                                    struct sk_buff *skb,
1781                                    struct netlink_callback *cb,
1782                                    void *data, int len)
1783 {
1784         struct ieee80211_local *local = wiphy_priv(wiphy);
1785
1786         if (!local->ops->testmode_dump)
1787                 return -EOPNOTSUPP;
1788
1789         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1790 }
1791 #endif
1792
1793 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1794                              enum ieee80211_smps_mode smps_mode)
1795 {
1796         const u8 *ap;
1797         enum ieee80211_smps_mode old_req;
1798         int err;
1799
1800         lockdep_assert_held(&sdata->u.mgd.mtx);
1801
1802         old_req = sdata->u.mgd.req_smps;
1803         sdata->u.mgd.req_smps = smps_mode;
1804
1805         if (old_req == smps_mode &&
1806             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1807                 return 0;
1808
1809         /*
1810          * If not associated, or current association is not an HT
1811          * association, there's no need to send an action frame.
1812          */
1813         if (!sdata->u.mgd.associated ||
1814             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1815                 mutex_lock(&sdata->local->iflist_mtx);
1816                 ieee80211_recalc_smps(sdata->local);
1817                 mutex_unlock(&sdata->local->iflist_mtx);
1818                 return 0;
1819         }
1820
1821         ap = sdata->u.mgd.associated->bssid;
1822
1823         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1824                 if (sdata->u.mgd.powersave)
1825                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1826                 else
1827                         smps_mode = IEEE80211_SMPS_OFF;
1828         }
1829
1830         /* send SM PS frame to AP */
1831         err = ieee80211_send_smps_action(sdata, smps_mode,
1832                                          ap, ap);
1833         if (err)
1834                 sdata->u.mgd.req_smps = old_req;
1835
1836         return err;
1837 }
1838
1839 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1840                                     bool enabled, int timeout)
1841 {
1842         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1843         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1844
1845         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1846                 return -EOPNOTSUPP;
1847
1848         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1849                 return -EOPNOTSUPP;
1850
1851         if (enabled == sdata->u.mgd.powersave &&
1852             timeout == local->dynamic_ps_forced_timeout)
1853                 return 0;
1854
1855         sdata->u.mgd.powersave = enabled;
1856         local->dynamic_ps_forced_timeout = timeout;
1857
1858         /* no change, but if automatic follow powersave */
1859         mutex_lock(&sdata->u.mgd.mtx);
1860         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1861         mutex_unlock(&sdata->u.mgd.mtx);
1862
1863         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1864                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1865
1866         ieee80211_recalc_ps(local, -1);
1867
1868         return 0;
1869 }
1870
1871 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1872                                          struct net_device *dev,
1873                                          s32 rssi_thold, u32 rssi_hyst)
1874 {
1875         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1876         struct ieee80211_vif *vif = &sdata->vif;
1877         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1878
1879         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1880             rssi_hyst == bss_conf->cqm_rssi_hyst)
1881                 return 0;
1882
1883         bss_conf->cqm_rssi_thold = rssi_thold;
1884         bss_conf->cqm_rssi_hyst = rssi_hyst;
1885
1886         /* tell the driver upon association, unless already associated */
1887         if (sdata->u.mgd.associated &&
1888             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
1889                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1890
1891         return 0;
1892 }
1893
1894 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1895                                       struct net_device *dev,
1896                                       const u8 *addr,
1897                                       const struct cfg80211_bitrate_mask *mask)
1898 {
1899         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1900         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1901         int i, ret;
1902
1903         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1904                 ret = drv_set_bitrate_mask(local, sdata, mask);
1905                 if (ret)
1906                         return ret;
1907         }
1908
1909         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1910                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1911
1912         return 0;
1913 }
1914
1915 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1916                                           struct net_device *dev,
1917                                           struct ieee80211_channel *chan,
1918                                           enum nl80211_channel_type chantype,
1919                                           unsigned int duration, u64 *cookie)
1920 {
1921         int ret;
1922         u32 random_cookie;
1923
1924         lockdep_assert_held(&local->mtx);
1925
1926         if (local->hw_roc_cookie)
1927                 return -EBUSY;
1928         /* must be nonzero */
1929         random_cookie = random32() | 1;
1930
1931         *cookie = random_cookie;
1932         local->hw_roc_dev = dev;
1933         local->hw_roc_cookie = random_cookie;
1934         local->hw_roc_channel = chan;
1935         local->hw_roc_channel_type = chantype;
1936         local->hw_roc_duration = duration;
1937         ret = drv_remain_on_channel(local, chan, chantype, duration);
1938         if (ret) {
1939                 local->hw_roc_channel = NULL;
1940                 local->hw_roc_cookie = 0;
1941         }
1942
1943         return ret;
1944 }
1945
1946 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1947                                        struct net_device *dev,
1948                                        struct ieee80211_channel *chan,
1949                                        enum nl80211_channel_type channel_type,
1950                                        unsigned int duration,
1951                                        u64 *cookie)
1952 {
1953         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1954         struct ieee80211_local *local = sdata->local;
1955
1956         if (local->ops->remain_on_channel) {
1957                 int ret;
1958
1959                 mutex_lock(&local->mtx);
1960                 ret = ieee80211_remain_on_channel_hw(local, dev,
1961                                                      chan, channel_type,
1962                                                      duration, cookie);
1963                 local->hw_roc_for_tx = false;
1964                 mutex_unlock(&local->mtx);
1965
1966                 return ret;
1967         }
1968
1969         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1970                                               duration, cookie);
1971 }
1972
1973 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1974                                                  u64 cookie)
1975 {
1976         int ret;
1977
1978         lockdep_assert_held(&local->mtx);
1979
1980         if (local->hw_roc_cookie != cookie)
1981                 return -ENOENT;
1982
1983         ret = drv_cancel_remain_on_channel(local);
1984         if (ret)
1985                 return ret;
1986
1987         local->hw_roc_cookie = 0;
1988         local->hw_roc_channel = NULL;
1989
1990         ieee80211_recalc_idle(local);
1991
1992         return 0;
1993 }
1994
1995 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1996                                               struct net_device *dev,
1997                                               u64 cookie)
1998 {
1999         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2000         struct ieee80211_local *local = sdata->local;
2001
2002         if (local->ops->cancel_remain_on_channel) {
2003                 int ret;
2004
2005                 mutex_lock(&local->mtx);
2006                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2007                 mutex_unlock(&local->mtx);
2008
2009                 return ret;
2010         }
2011
2012         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
2013 }
2014
2015 static enum work_done_result
2016 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
2017 {
2018         /*
2019          * Use the data embedded in the work struct for reporting
2020          * here so if the driver mangled the SKB before dropping
2021          * it (which is the only way we really should get here)
2022          * then we don't report mangled data.
2023          *
2024          * If there was no wait time, then by the time we get here
2025          * the driver will likely not have reported the status yet,
2026          * so in that case userspace will have to deal with it.
2027          */
2028
2029         if (wk->offchan_tx.wait && !wk->offchan_tx.status)
2030                 cfg80211_mgmt_tx_status(wk->sdata->dev,
2031                                         (unsigned long) wk->offchan_tx.frame,
2032                                         wk->ie, wk->ie_len, false, GFP_KERNEL);
2033
2034         return WORK_DONE_DESTROY;
2035 }
2036
2037 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
2038                              struct ieee80211_channel *chan, bool offchan,
2039                              enum nl80211_channel_type channel_type,
2040                              bool channel_type_valid, unsigned int wait,
2041                              const u8 *buf, size_t len, bool no_cck,
2042                              bool dont_wait_for_ack, u64 *cookie)
2043 {
2044         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2045         struct ieee80211_local *local = sdata->local;
2046         struct sk_buff *skb;
2047         struct sta_info *sta;
2048         struct ieee80211_work *wk;
2049         const struct ieee80211_mgmt *mgmt = (void *)buf;
2050         u32 flags;
2051         bool is_offchan = false;
2052
2053         if (dont_wait_for_ack)
2054                 flags = IEEE80211_TX_CTL_NO_ACK;
2055         else
2056                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2057                         IEEE80211_TX_CTL_REQ_TX_STATUS;
2058
2059         /* Check that we are on the requested channel for transmission */
2060         if (chan != local->tmp_channel &&
2061             chan != local->oper_channel)
2062                 is_offchan = true;
2063         if (channel_type_valid &&
2064             (channel_type != local->tmp_channel_type &&
2065              channel_type != local->_oper_channel_type))
2066                 is_offchan = true;
2067
2068         if (chan == local->hw_roc_channel) {
2069                 /* TODO: check channel type? */
2070                 is_offchan = false;
2071                 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2072         }
2073
2074         if (no_cck)
2075                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2076
2077         if (is_offchan && !offchan)
2078                 return -EBUSY;
2079
2080         switch (sdata->vif.type) {
2081         case NL80211_IFTYPE_ADHOC:
2082         case NL80211_IFTYPE_AP:
2083         case NL80211_IFTYPE_AP_VLAN:
2084         case NL80211_IFTYPE_P2P_GO:
2085         case NL80211_IFTYPE_MESH_POINT:
2086                 if (!ieee80211_is_action(mgmt->frame_control) ||
2087                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2088                         break;
2089                 rcu_read_lock();
2090                 sta = sta_info_get(sdata, mgmt->da);
2091                 rcu_read_unlock();
2092                 if (!sta)
2093                         return -ENOLINK;
2094                 break;
2095         case NL80211_IFTYPE_STATION:
2096         case NL80211_IFTYPE_P2P_CLIENT:
2097                 break;
2098         default:
2099                 return -EOPNOTSUPP;
2100         }
2101
2102         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2103         if (!skb)
2104                 return -ENOMEM;
2105         skb_reserve(skb, local->hw.extra_tx_headroom);
2106
2107         memcpy(skb_put(skb, len), buf, len);
2108
2109         IEEE80211_SKB_CB(skb)->flags = flags;
2110
2111         skb->dev = sdata->dev;
2112
2113         *cookie = (unsigned long) skb;
2114
2115         if (is_offchan && local->ops->remain_on_channel) {
2116                 unsigned int duration;
2117                 int ret;
2118
2119                 mutex_lock(&local->mtx);
2120                 /*
2121                  * If the duration is zero, then the driver
2122                  * wouldn't actually do anything. Set it to
2123                  * 100 for now.
2124                  *
2125                  * TODO: cancel the off-channel operation
2126                  *       when we get the SKB's TX status and
2127                  *       the wait time was zero before.
2128                  */
2129                 duration = 100;
2130                 if (wait)
2131                         duration = wait;
2132                 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
2133                                                      channel_type,
2134                                                      duration, cookie);
2135                 if (ret) {
2136                         kfree_skb(skb);
2137                         mutex_unlock(&local->mtx);
2138                         return ret;
2139                 }
2140
2141                 local->hw_roc_for_tx = true;
2142                 local->hw_roc_duration = wait;
2143
2144                 /*
2145                  * queue up frame for transmission after
2146                  * ieee80211_ready_on_channel call
2147                  */
2148
2149                 /* modify cookie to prevent API mismatches */
2150                 *cookie ^= 2;
2151                 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2152                 local->hw_roc_skb = skb;
2153                 local->hw_roc_skb_for_status = skb;
2154                 mutex_unlock(&local->mtx);
2155
2156                 return 0;
2157         }
2158
2159         /*
2160          * Can transmit right away if the channel was the
2161          * right one and there's no wait involved... If a
2162          * wait is involved, we might otherwise not be on
2163          * the right channel for long enough!
2164          */
2165         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
2166                 ieee80211_tx_skb(sdata, skb);
2167                 return 0;
2168         }
2169
2170         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
2171         if (!wk) {
2172                 kfree_skb(skb);
2173                 return -ENOMEM;
2174         }
2175
2176         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
2177         wk->chan = chan;
2178         wk->chan_type = channel_type;
2179         wk->sdata = sdata;
2180         wk->done = ieee80211_offchan_tx_done;
2181         wk->offchan_tx.frame = skb;
2182         wk->offchan_tx.wait = wait;
2183         wk->ie_len = len;
2184         memcpy(wk->ie, buf, len);
2185
2186         ieee80211_add_work(wk);
2187         return 0;
2188 }
2189
2190 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2191                                          struct net_device *dev,
2192                                          u64 cookie)
2193 {
2194         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2195         struct ieee80211_local *local = sdata->local;
2196         struct ieee80211_work *wk;
2197         int ret = -ENOENT;
2198
2199         mutex_lock(&local->mtx);
2200
2201         if (local->ops->cancel_remain_on_channel) {
2202                 cookie ^= 2;
2203                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2204
2205                 if (ret == 0) {
2206                         kfree_skb(local->hw_roc_skb);
2207                         local->hw_roc_skb = NULL;
2208                         local->hw_roc_skb_for_status = NULL;
2209                 }
2210
2211                 mutex_unlock(&local->mtx);
2212
2213                 return ret;
2214         }
2215
2216         list_for_each_entry(wk, &local->work_list, list) {
2217                 if (wk->sdata != sdata)
2218                         continue;
2219
2220                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2221                         continue;
2222
2223                 if (cookie != (unsigned long) wk->offchan_tx.frame)
2224                         continue;
2225
2226                 wk->timeout = jiffies;
2227
2228                 ieee80211_queue_work(&local->hw, &local->work_work);
2229                 ret = 0;
2230                 break;
2231         }
2232         mutex_unlock(&local->mtx);
2233
2234         return ret;
2235 }
2236
2237 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2238                                           struct net_device *dev,
2239                                           u16 frame_type, bool reg)
2240 {
2241         struct ieee80211_local *local = wiphy_priv(wiphy);
2242
2243         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2244                 return;
2245
2246         if (reg)
2247                 local->probe_req_reg++;
2248         else
2249                 local->probe_req_reg--;
2250
2251         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2252 }
2253
2254 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2255 {
2256         struct ieee80211_local *local = wiphy_priv(wiphy);
2257
2258         if (local->started)
2259                 return -EOPNOTSUPP;
2260
2261         return drv_set_antenna(local, tx_ant, rx_ant);
2262 }
2263
2264 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2265 {
2266         struct ieee80211_local *local = wiphy_priv(wiphy);
2267
2268         return drv_get_antenna(local, tx_ant, rx_ant);
2269 }
2270
2271 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2272 {
2273         struct ieee80211_local *local = wiphy_priv(wiphy);
2274
2275         return drv_set_ringparam(local, tx, rx);
2276 }
2277
2278 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2279                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2280 {
2281         struct ieee80211_local *local = wiphy_priv(wiphy);
2282
2283         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2284 }
2285
2286 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2287                                     struct net_device *dev,
2288                                     struct cfg80211_gtk_rekey_data *data)
2289 {
2290         struct ieee80211_local *local = wiphy_priv(wiphy);
2291         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2292
2293         if (!local->ops->set_rekey_data)
2294                 return -EOPNOTSUPP;
2295
2296         drv_set_rekey_data(local, sdata, data);
2297
2298         return 0;
2299 }
2300
2301 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2302 {
2303         u8 *pos = (void *)skb_put(skb, 7);
2304
2305         *pos++ = WLAN_EID_EXT_CAPABILITY;
2306         *pos++ = 5; /* len */
2307         *pos++ = 0x0;
2308         *pos++ = 0x0;
2309         *pos++ = 0x0;
2310         *pos++ = 0x0;
2311         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2312 }
2313
2314 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2315 {
2316         struct ieee80211_local *local = sdata->local;
2317         u16 capab;
2318
2319         capab = 0;
2320         if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2321                 return capab;
2322
2323         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2324                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2325         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2326                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2327
2328         return capab;
2329 }
2330
2331 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2332                                        u8 *peer, u8 *bssid)
2333 {
2334         struct ieee80211_tdls_lnkie *lnkid;
2335
2336         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2337
2338         lnkid->ie_type = WLAN_EID_LINK_ID;
2339         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2340
2341         memcpy(lnkid->bssid, bssid, ETH_ALEN);
2342         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2343         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2344 }
2345
2346 static int
2347 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2348                                u8 *peer, u8 action_code, u8 dialog_token,
2349                                u16 status_code, struct sk_buff *skb)
2350 {
2351         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2352         struct ieee80211_tdls_data *tf;
2353
2354         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2355
2356         memcpy(tf->da, peer, ETH_ALEN);
2357         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2358         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2359         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2360
2361         switch (action_code) {
2362         case WLAN_TDLS_SETUP_REQUEST:
2363                 tf->category = WLAN_CATEGORY_TDLS;
2364                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2365
2366                 skb_put(skb, sizeof(tf->u.setup_req));
2367                 tf->u.setup_req.dialog_token = dialog_token;
2368                 tf->u.setup_req.capability =
2369                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2370
2371                 ieee80211_add_srates_ie(&sdata->vif, skb);
2372                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2373                 ieee80211_tdls_add_ext_capab(skb);
2374                 break;
2375         case WLAN_TDLS_SETUP_RESPONSE:
2376                 tf->category = WLAN_CATEGORY_TDLS;
2377                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2378
2379                 skb_put(skb, sizeof(tf->u.setup_resp));
2380                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2381                 tf->u.setup_resp.dialog_token = dialog_token;
2382                 tf->u.setup_resp.capability =
2383                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2384
2385                 ieee80211_add_srates_ie(&sdata->vif, skb);
2386                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2387                 ieee80211_tdls_add_ext_capab(skb);
2388                 break;
2389         case WLAN_TDLS_SETUP_CONFIRM:
2390                 tf->category = WLAN_CATEGORY_TDLS;
2391                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2392
2393                 skb_put(skb, sizeof(tf->u.setup_cfm));
2394                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2395                 tf->u.setup_cfm.dialog_token = dialog_token;
2396                 break;
2397         case WLAN_TDLS_TEARDOWN:
2398                 tf->category = WLAN_CATEGORY_TDLS;
2399                 tf->action_code = WLAN_TDLS_TEARDOWN;
2400
2401                 skb_put(skb, sizeof(tf->u.teardown));
2402                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2403                 break;
2404         case WLAN_TDLS_DISCOVERY_REQUEST:
2405                 tf->category = WLAN_CATEGORY_TDLS;
2406                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2407
2408                 skb_put(skb, sizeof(tf->u.discover_req));
2409                 tf->u.discover_req.dialog_token = dialog_token;
2410                 break;
2411         default:
2412                 return -EINVAL;
2413         }
2414
2415         return 0;
2416 }
2417
2418 static int
2419 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2420                            u8 *peer, u8 action_code, u8 dialog_token,
2421                            u16 status_code, struct sk_buff *skb)
2422 {
2423         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2424         struct ieee80211_mgmt *mgmt;
2425
2426         mgmt = (void *)skb_put(skb, 24);
2427         memset(mgmt, 0, 24);
2428         memcpy(mgmt->da, peer, ETH_ALEN);
2429         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2430         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2431
2432         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2433                                           IEEE80211_STYPE_ACTION);
2434
2435         switch (action_code) {
2436         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2437                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2438                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2439                 mgmt->u.action.u.tdls_discover_resp.action_code =
2440                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2441                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2442                         dialog_token;
2443                 mgmt->u.action.u.tdls_discover_resp.capability =
2444                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2445
2446                 ieee80211_add_srates_ie(&sdata->vif, skb);
2447                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2448                 ieee80211_tdls_add_ext_capab(skb);
2449                 break;
2450         default:
2451                 return -EINVAL;
2452         }
2453
2454         return 0;
2455 }
2456
2457 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2458                                u8 *peer, u8 action_code, u8 dialog_token,
2459                                u16 status_code, const u8 *extra_ies,
2460                                size_t extra_ies_len)
2461 {
2462         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2463         struct ieee80211_local *local = sdata->local;
2464         struct ieee80211_tx_info *info;
2465         struct sk_buff *skb = NULL;
2466         bool send_direct;
2467         int ret;
2468
2469         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2470                 return -ENOTSUPP;
2471
2472         /* make sure we are in managed mode, and associated */
2473         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2474             !sdata->u.mgd.associated)
2475                 return -EINVAL;
2476
2477 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2478         printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer);
2479 #endif
2480
2481         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2482                             max(sizeof(struct ieee80211_mgmt),
2483                                 sizeof(struct ieee80211_tdls_data)) +
2484                             50 + /* supported rates */
2485                             7 + /* ext capab */
2486                             extra_ies_len +
2487                             sizeof(struct ieee80211_tdls_lnkie));
2488         if (!skb)
2489                 return -ENOMEM;
2490
2491         info = IEEE80211_SKB_CB(skb);
2492         skb_reserve(skb, local->hw.extra_tx_headroom);
2493
2494         switch (action_code) {
2495         case WLAN_TDLS_SETUP_REQUEST:
2496         case WLAN_TDLS_SETUP_RESPONSE:
2497         case WLAN_TDLS_SETUP_CONFIRM:
2498         case WLAN_TDLS_TEARDOWN:
2499         case WLAN_TDLS_DISCOVERY_REQUEST:
2500                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2501                                                      action_code, dialog_token,
2502                                                      status_code, skb);
2503                 send_direct = false;
2504                 break;
2505         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2506                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2507                                                  dialog_token, status_code,
2508                                                  skb);
2509                 send_direct = true;
2510                 break;
2511         default:
2512                 ret = -ENOTSUPP;
2513                 break;
2514         }
2515
2516         if (ret < 0)
2517                 goto fail;
2518
2519         if (extra_ies_len)
2520                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2521
2522         /* the TDLS link IE is always added last */
2523         switch (action_code) {
2524         case WLAN_TDLS_SETUP_REQUEST:
2525         case WLAN_TDLS_SETUP_CONFIRM:
2526         case WLAN_TDLS_TEARDOWN:
2527         case WLAN_TDLS_DISCOVERY_REQUEST:
2528                 /* we are the initiator */
2529                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2530                                            sdata->u.mgd.bssid);
2531                 break;
2532         case WLAN_TDLS_SETUP_RESPONSE:
2533         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2534                 /* we are the responder */
2535                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2536                                            sdata->u.mgd.bssid);
2537                 break;
2538         default:
2539                 ret = -ENOTSUPP;
2540                 goto fail;
2541         }
2542
2543         if (send_direct) {
2544                 ieee80211_tx_skb(sdata, skb);
2545                 return 0;
2546         }
2547
2548         /*
2549          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2550          * we should default to AC_VI.
2551          */
2552         switch (action_code) {
2553         case WLAN_TDLS_SETUP_REQUEST:
2554         case WLAN_TDLS_SETUP_RESPONSE:
2555                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2556                 skb->priority = 2;
2557                 break;
2558         default:
2559                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2560                 skb->priority = 5;
2561                 break;
2562         }
2563
2564         /* disable bottom halves when entering the Tx path */
2565         local_bh_disable();
2566         ret = ieee80211_subif_start_xmit(skb, dev);
2567         local_bh_enable();
2568
2569         return ret;
2570
2571 fail:
2572         dev_kfree_skb(skb);
2573         return ret;
2574 }
2575
2576 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2577                                u8 *peer, enum nl80211_tdls_operation oper)
2578 {
2579         struct sta_info *sta;
2580         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2581
2582         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2583                 return -ENOTSUPP;
2584
2585         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2586                 return -EINVAL;
2587
2588 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2589         printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer);
2590 #endif
2591
2592         switch (oper) {
2593         case NL80211_TDLS_ENABLE_LINK:
2594                 rcu_read_lock();
2595                 sta = sta_info_get(sdata, peer);
2596                 if (!sta) {
2597                         rcu_read_unlock();
2598                         return -ENOLINK;
2599                 }
2600
2601                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2602                 rcu_read_unlock();
2603                 break;
2604         case NL80211_TDLS_DISABLE_LINK:
2605                 return sta_info_destroy_addr(sdata, peer);
2606         case NL80211_TDLS_TEARDOWN:
2607         case NL80211_TDLS_SETUP:
2608         case NL80211_TDLS_DISCOVERY_REQ:
2609                 /* We don't support in-driver setup/teardown/discovery */
2610                 return -ENOTSUPP;
2611         default:
2612                 return -ENOTSUPP;
2613         }
2614
2615         return 0;
2616 }
2617
2618 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2619                                   const u8 *peer, u64 *cookie)
2620 {
2621         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2622         struct ieee80211_local *local = sdata->local;
2623         struct ieee80211_qos_hdr *nullfunc;
2624         struct sk_buff *skb;
2625         int size = sizeof(*nullfunc);
2626         __le16 fc;
2627         bool qos;
2628         struct ieee80211_tx_info *info;
2629         struct sta_info *sta;
2630
2631         rcu_read_lock();
2632         sta = sta_info_get(sdata, peer);
2633         if (sta) {
2634                 qos = test_sta_flag(sta, WLAN_STA_WME);
2635                 rcu_read_unlock();
2636         } else {
2637                 rcu_read_unlock();
2638                 return -ENOLINK;
2639         }
2640
2641         if (qos) {
2642                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2643                                  IEEE80211_STYPE_QOS_NULLFUNC |
2644                                  IEEE80211_FCTL_FROMDS);
2645         } else {
2646                 size -= 2;
2647                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2648                                  IEEE80211_STYPE_NULLFUNC |
2649                                  IEEE80211_FCTL_FROMDS);
2650         }
2651
2652         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
2653         if (!skb)
2654                 return -ENOMEM;
2655
2656         skb->dev = dev;
2657
2658         skb_reserve(skb, local->hw.extra_tx_headroom);
2659
2660         nullfunc = (void *) skb_put(skb, size);
2661         nullfunc->frame_control = fc;
2662         nullfunc->duration_id = 0;
2663         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
2664         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
2665         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
2666         nullfunc->seq_ctrl = 0;
2667
2668         info = IEEE80211_SKB_CB(skb);
2669
2670         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
2671                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
2672
2673         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
2674         skb->priority = 7;
2675         if (qos)
2676                 nullfunc->qos_ctrl = cpu_to_le16(7);
2677
2678         local_bh_disable();
2679         ieee80211_xmit(sdata, skb);
2680         local_bh_enable();
2681
2682         *cookie = (unsigned long) skb;
2683         return 0;
2684 }
2685
2686 static struct ieee80211_channel *
2687 ieee80211_wiphy_get_channel(struct wiphy *wiphy)
2688 {
2689         struct ieee80211_local *local = wiphy_priv(wiphy);
2690
2691         return local->oper_channel;
2692 }
2693
2694 struct cfg80211_ops mac80211_config_ops = {
2695         .add_virtual_intf = ieee80211_add_iface,
2696         .del_virtual_intf = ieee80211_del_iface,
2697         .change_virtual_intf = ieee80211_change_iface,
2698         .add_key = ieee80211_add_key,
2699         .del_key = ieee80211_del_key,
2700         .get_key = ieee80211_get_key,
2701         .set_default_key = ieee80211_config_default_key,
2702         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2703         .add_beacon = ieee80211_add_beacon,
2704         .set_beacon = ieee80211_set_beacon,
2705         .del_beacon = ieee80211_del_beacon,
2706         .add_station = ieee80211_add_station,
2707         .del_station = ieee80211_del_station,
2708         .change_station = ieee80211_change_station,
2709         .get_station = ieee80211_get_station,
2710         .dump_station = ieee80211_dump_station,
2711         .dump_survey = ieee80211_dump_survey,
2712 #ifdef CONFIG_MAC80211_MESH
2713         .add_mpath = ieee80211_add_mpath,
2714         .del_mpath = ieee80211_del_mpath,
2715         .change_mpath = ieee80211_change_mpath,
2716         .get_mpath = ieee80211_get_mpath,
2717         .dump_mpath = ieee80211_dump_mpath,
2718         .update_mesh_config = ieee80211_update_mesh_config,
2719         .get_mesh_config = ieee80211_get_mesh_config,
2720         .join_mesh = ieee80211_join_mesh,
2721         .leave_mesh = ieee80211_leave_mesh,
2722 #endif
2723         .change_bss = ieee80211_change_bss,
2724         .set_txq_params = ieee80211_set_txq_params,
2725         .set_channel = ieee80211_set_channel,
2726         .suspend = ieee80211_suspend,
2727         .resume = ieee80211_resume,
2728         .scan = ieee80211_scan,
2729         .sched_scan_start = ieee80211_sched_scan_start,
2730         .sched_scan_stop = ieee80211_sched_scan_stop,
2731         .auth = ieee80211_auth,
2732         .assoc = ieee80211_assoc,
2733         .deauth = ieee80211_deauth,
2734         .disassoc = ieee80211_disassoc,
2735         .join_ibss = ieee80211_join_ibss,
2736         .leave_ibss = ieee80211_leave_ibss,
2737         .set_wiphy_params = ieee80211_set_wiphy_params,
2738         .set_tx_power = ieee80211_set_tx_power,
2739         .get_tx_power = ieee80211_get_tx_power,
2740         .set_wds_peer = ieee80211_set_wds_peer,
2741         .rfkill_poll = ieee80211_rfkill_poll,
2742         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2743         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2744         .set_power_mgmt = ieee80211_set_power_mgmt,
2745         .set_bitrate_mask = ieee80211_set_bitrate_mask,
2746         .remain_on_channel = ieee80211_remain_on_channel,
2747         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2748         .mgmt_tx = ieee80211_mgmt_tx,
2749         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2750         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2751         .mgmt_frame_register = ieee80211_mgmt_frame_register,
2752         .set_antenna = ieee80211_set_antenna,
2753         .get_antenna = ieee80211_get_antenna,
2754         .set_ringparam = ieee80211_set_ringparam,
2755         .get_ringparam = ieee80211_get_ringparam,
2756         .set_rekey_data = ieee80211_set_rekey_data,
2757         .tdls_oper = ieee80211_tdls_oper,
2758         .tdls_mgmt = ieee80211_tdls_mgmt,
2759         .probe_client = ieee80211_probe_client,
2760         .get_channel = ieee80211_wiphy_get_channel,
2761         .set_noack_map = ieee80211_set_noack_map,
2762 };