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
1005         mutex_lock(&local->sta_mtx);
1006
1007         sta = sta_info_get_bss(sdata, mac);
1008         if (!sta) {
1009                 mutex_unlock(&local->sta_mtx);
1010                 return -ENOENT;
1011         }
1012
1013         /* in station mode, supported rates are only valid with TDLS */
1014         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1015             params->supported_rates &&
1016             !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1017                 mutex_unlock(&local->sta_mtx);
1018                 return -EINVAL;
1019         }
1020
1021         if (params->vlan && params->vlan != sta->sdata->dev) {
1022                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1023
1024                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1025                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
1026                         mutex_unlock(&local->sta_mtx);
1027                         return -EINVAL;
1028                 }
1029
1030                 if (params->vlan->ieee80211_ptr->use_4addr) {
1031                         if (vlansdata->u.vlan.sta) {
1032                                 mutex_unlock(&local->sta_mtx);
1033                                 return -EBUSY;
1034                         }
1035
1036                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1037                 }
1038
1039                 sta->sdata = vlansdata;
1040                 ieee80211_send_layer2_update(sta);
1041         }
1042
1043         sta_apply_parameters(local, sta, params);
1044
1045         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1046                 rate_control_rate_init(sta);
1047
1048         mutex_unlock(&local->sta_mtx);
1049
1050         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1051             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
1052                 ieee80211_recalc_ps(local, -1);
1053
1054         return 0;
1055 }
1056
1057 #ifdef CONFIG_MAC80211_MESH
1058 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1059                                  u8 *dst, u8 *next_hop)
1060 {
1061         struct ieee80211_sub_if_data *sdata;
1062         struct mesh_path *mpath;
1063         struct sta_info *sta;
1064         int err;
1065
1066         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1067
1068         rcu_read_lock();
1069         sta = sta_info_get(sdata, next_hop);
1070         if (!sta) {
1071                 rcu_read_unlock();
1072                 return -ENOENT;
1073         }
1074
1075         err = mesh_path_add(dst, sdata);
1076         if (err) {
1077                 rcu_read_unlock();
1078                 return err;
1079         }
1080
1081         mpath = mesh_path_lookup(dst, sdata);
1082         if (!mpath) {
1083                 rcu_read_unlock();
1084                 return -ENXIO;
1085         }
1086         mesh_path_fix_nexthop(mpath, sta);
1087
1088         rcu_read_unlock();
1089         return 0;
1090 }
1091
1092 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1093                                  u8 *dst)
1094 {
1095         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1096
1097         if (dst)
1098                 return mesh_path_del(dst, sdata);
1099
1100         mesh_path_flush_by_iface(sdata);
1101         return 0;
1102 }
1103
1104 static int ieee80211_change_mpath(struct wiphy *wiphy,
1105                                     struct net_device *dev,
1106                                     u8 *dst, u8 *next_hop)
1107 {
1108         struct ieee80211_sub_if_data *sdata;
1109         struct mesh_path *mpath;
1110         struct sta_info *sta;
1111
1112         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1113
1114         rcu_read_lock();
1115
1116         sta = sta_info_get(sdata, next_hop);
1117         if (!sta) {
1118                 rcu_read_unlock();
1119                 return -ENOENT;
1120         }
1121
1122         mpath = mesh_path_lookup(dst, sdata);
1123         if (!mpath) {
1124                 rcu_read_unlock();
1125                 return -ENOENT;
1126         }
1127
1128         mesh_path_fix_nexthop(mpath, sta);
1129
1130         rcu_read_unlock();
1131         return 0;
1132 }
1133
1134 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1135                             struct mpath_info *pinfo)
1136 {
1137         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1138
1139         if (next_hop_sta)
1140                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1141         else
1142                 memset(next_hop, 0, ETH_ALEN);
1143
1144         pinfo->generation = mesh_paths_generation;
1145
1146         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1147                         MPATH_INFO_SN |
1148                         MPATH_INFO_METRIC |
1149                         MPATH_INFO_EXPTIME |
1150                         MPATH_INFO_DISCOVERY_TIMEOUT |
1151                         MPATH_INFO_DISCOVERY_RETRIES |
1152                         MPATH_INFO_FLAGS;
1153
1154         pinfo->frame_qlen = mpath->frame_queue.qlen;
1155         pinfo->sn = mpath->sn;
1156         pinfo->metric = mpath->metric;
1157         if (time_before(jiffies, mpath->exp_time))
1158                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1159         pinfo->discovery_timeout =
1160                         jiffies_to_msecs(mpath->discovery_timeout);
1161         pinfo->discovery_retries = mpath->discovery_retries;
1162         pinfo->flags = 0;
1163         if (mpath->flags & MESH_PATH_ACTIVE)
1164                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1165         if (mpath->flags & MESH_PATH_RESOLVING)
1166                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1167         if (mpath->flags & MESH_PATH_SN_VALID)
1168                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1169         if (mpath->flags & MESH_PATH_FIXED)
1170                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1171         if (mpath->flags & MESH_PATH_RESOLVING)
1172                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1173
1174         pinfo->flags = mpath->flags;
1175 }
1176
1177 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1178                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1179
1180 {
1181         struct ieee80211_sub_if_data *sdata;
1182         struct mesh_path *mpath;
1183
1184         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1185
1186         rcu_read_lock();
1187         mpath = mesh_path_lookup(dst, sdata);
1188         if (!mpath) {
1189                 rcu_read_unlock();
1190                 return -ENOENT;
1191         }
1192         memcpy(dst, mpath->dst, ETH_ALEN);
1193         mpath_set_pinfo(mpath, next_hop, pinfo);
1194         rcu_read_unlock();
1195         return 0;
1196 }
1197
1198 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1199                                  int idx, u8 *dst, u8 *next_hop,
1200                                  struct mpath_info *pinfo)
1201 {
1202         struct ieee80211_sub_if_data *sdata;
1203         struct mesh_path *mpath;
1204
1205         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1206
1207         rcu_read_lock();
1208         mpath = mesh_path_lookup_by_idx(idx, sdata);
1209         if (!mpath) {
1210                 rcu_read_unlock();
1211                 return -ENOENT;
1212         }
1213         memcpy(dst, mpath->dst, ETH_ALEN);
1214         mpath_set_pinfo(mpath, next_hop, pinfo);
1215         rcu_read_unlock();
1216         return 0;
1217 }
1218
1219 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1220                                 struct net_device *dev,
1221                                 struct mesh_config *conf)
1222 {
1223         struct ieee80211_sub_if_data *sdata;
1224         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1225
1226         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1227         return 0;
1228 }
1229
1230 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1231 {
1232         return (mask >> (parm-1)) & 0x1;
1233 }
1234
1235 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1236                 const struct mesh_setup *setup)
1237 {
1238         u8 *new_ie;
1239         const u8 *old_ie;
1240         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1241                                         struct ieee80211_sub_if_data, u.mesh);
1242
1243         /* allocate information elements */
1244         new_ie = NULL;
1245         old_ie = ifmsh->ie;
1246
1247         if (setup->ie_len) {
1248                 new_ie = kmemdup(setup->ie, setup->ie_len,
1249                                 GFP_KERNEL);
1250                 if (!new_ie)
1251                         return -ENOMEM;
1252         }
1253         ifmsh->ie_len = setup->ie_len;
1254         ifmsh->ie = new_ie;
1255         kfree(old_ie);
1256
1257         /* now copy the rest of the setup parameters */
1258         ifmsh->mesh_id_len = setup->mesh_id_len;
1259         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1260         ifmsh->mesh_pp_id = setup->path_sel_proto;
1261         ifmsh->mesh_pm_id = setup->path_metric;
1262         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1263         if (setup->is_authenticated)
1264                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1265         if (setup->is_secure)
1266                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1267
1268         /* mcast rate setting in Mesh Node */
1269         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1270                                                 sizeof(setup->mcast_rate));
1271
1272         return 0;
1273 }
1274
1275 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1276                                         struct net_device *dev, u32 mask,
1277                                         const struct mesh_config *nconf)
1278 {
1279         struct mesh_config *conf;
1280         struct ieee80211_sub_if_data *sdata;
1281         struct ieee80211_if_mesh *ifmsh;
1282
1283         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1284         ifmsh = &sdata->u.mesh;
1285
1286         /* Set the config options which we are interested in setting */
1287         conf = &(sdata->u.mesh.mshcfg);
1288         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1289                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1290         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1291                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1292         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1293                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1294         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1295                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1296         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1297                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1298         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1299                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1300         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1301                 conf->dot11MeshTTL = nconf->element_ttl;
1302         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1303                 conf->auto_open_plinks = nconf->auto_open_plinks;
1304         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1305                 conf->dot11MeshHWMPmaxPREQretries =
1306                         nconf->dot11MeshHWMPmaxPREQretries;
1307         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1308                 conf->path_refresh_time = nconf->path_refresh_time;
1309         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1310                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1311         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1312                 conf->dot11MeshHWMPactivePathTimeout =
1313                         nconf->dot11MeshHWMPactivePathTimeout;
1314         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1315                 conf->dot11MeshHWMPpreqMinInterval =
1316                         nconf->dot11MeshHWMPpreqMinInterval;
1317         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1318                 conf->dot11MeshHWMPperrMinInterval =
1319                         nconf->dot11MeshHWMPperrMinInterval;
1320         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1321                            mask))
1322                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1323                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1324         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1325                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1326                 ieee80211_mesh_root_setup(ifmsh);
1327         }
1328         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1329                 /* our current gate announcement implementation rides on root
1330                  * announcements, so require this ifmsh to also be a root node
1331                  * */
1332                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1333                     !conf->dot11MeshHWMPRootMode) {
1334                         conf->dot11MeshHWMPRootMode = 1;
1335                         ieee80211_mesh_root_setup(ifmsh);
1336                 }
1337                 conf->dot11MeshGateAnnouncementProtocol =
1338                         nconf->dot11MeshGateAnnouncementProtocol;
1339         }
1340         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
1341                 conf->dot11MeshHWMPRannInterval =
1342                         nconf->dot11MeshHWMPRannInterval;
1343         }
1344         return 0;
1345 }
1346
1347 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1348                                const struct mesh_config *conf,
1349                                const struct mesh_setup *setup)
1350 {
1351         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1352         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1353         int err;
1354
1355         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1356         err = copy_mesh_setup(ifmsh, setup);
1357         if (err)
1358                 return err;
1359         ieee80211_start_mesh(sdata);
1360
1361         return 0;
1362 }
1363
1364 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1365 {
1366         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1367
1368         ieee80211_stop_mesh(sdata);
1369
1370         return 0;
1371 }
1372 #endif
1373
1374 static int ieee80211_change_bss(struct wiphy *wiphy,
1375                                 struct net_device *dev,
1376                                 struct bss_parameters *params)
1377 {
1378         struct ieee80211_sub_if_data *sdata;
1379         u32 changed = 0;
1380
1381         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1382
1383         if (params->use_cts_prot >= 0) {
1384                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1385                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1386         }
1387         if (params->use_short_preamble >= 0) {
1388                 sdata->vif.bss_conf.use_short_preamble =
1389                         params->use_short_preamble;
1390                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1391         }
1392
1393         if (!sdata->vif.bss_conf.use_short_slot &&
1394             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1395                 sdata->vif.bss_conf.use_short_slot = true;
1396                 changed |= BSS_CHANGED_ERP_SLOT;
1397         }
1398
1399         if (params->use_short_slot_time >= 0) {
1400                 sdata->vif.bss_conf.use_short_slot =
1401                         params->use_short_slot_time;
1402                 changed |= BSS_CHANGED_ERP_SLOT;
1403         }
1404
1405         if (params->basic_rates) {
1406                 int i, j;
1407                 u32 rates = 0;
1408                 struct ieee80211_local *local = wiphy_priv(wiphy);
1409                 struct ieee80211_supported_band *sband =
1410                         wiphy->bands[local->oper_channel->band];
1411
1412                 for (i = 0; i < params->basic_rates_len; i++) {
1413                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1414                         for (j = 0; j < sband->n_bitrates; j++) {
1415                                 if (sband->bitrates[j].bitrate == rate)
1416                                         rates |= BIT(j);
1417                         }
1418                 }
1419                 sdata->vif.bss_conf.basic_rates = rates;
1420                 changed |= BSS_CHANGED_BASIC_RATES;
1421         }
1422
1423         if (params->ap_isolate >= 0) {
1424                 if (params->ap_isolate)
1425                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1426                 else
1427                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1428         }
1429
1430         if (params->ht_opmode >= 0) {
1431                 sdata->vif.bss_conf.ht_operation_mode =
1432                         (u16) params->ht_opmode;
1433                 changed |= BSS_CHANGED_HT;
1434         }
1435
1436         ieee80211_bss_info_change_notify(sdata, changed);
1437
1438         return 0;
1439 }
1440
1441 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1442                                     struct net_device *dev,
1443                                     struct ieee80211_txq_params *params)
1444 {
1445         struct ieee80211_local *local = wiphy_priv(wiphy);
1446         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1447         struct ieee80211_tx_queue_params p;
1448
1449         if (!local->ops->conf_tx)
1450                 return -EOPNOTSUPP;
1451
1452         memset(&p, 0, sizeof(p));
1453         p.aifs = params->aifs;
1454         p.cw_max = params->cwmax;
1455         p.cw_min = params->cwmin;
1456         p.txop = params->txop;
1457
1458         /*
1459          * Setting tx queue params disables u-apsd because it's only
1460          * called in master mode.
1461          */
1462         p.uapsd = false;
1463
1464         if (params->queue >= local->hw.queues)
1465                 return -EINVAL;
1466
1467         sdata->tx_conf[params->queue] = p;
1468         if (drv_conf_tx(local, sdata, params->queue, &p)) {
1469                 wiphy_debug(local->hw.wiphy,
1470                             "failed to set TX queue parameters for queue %d\n",
1471                             params->queue);
1472                 return -EINVAL;
1473         }
1474
1475         return 0;
1476 }
1477
1478 static int ieee80211_set_channel(struct wiphy *wiphy,
1479                                  struct net_device *netdev,
1480                                  struct ieee80211_channel *chan,
1481                                  enum nl80211_channel_type channel_type)
1482 {
1483         struct ieee80211_local *local = wiphy_priv(wiphy);
1484         struct ieee80211_sub_if_data *sdata = NULL;
1485         struct ieee80211_channel *old_oper;
1486         enum nl80211_channel_type old_oper_type;
1487         enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1488
1489         if (netdev)
1490                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1491
1492         switch (ieee80211_get_channel_mode(local, NULL)) {
1493         case CHAN_MODE_HOPPING:
1494                 return -EBUSY;
1495         case CHAN_MODE_FIXED:
1496                 if (local->oper_channel != chan)
1497                         return -EBUSY;
1498                 if (!sdata && local->_oper_channel_type == channel_type)
1499                         return 0;
1500                 break;
1501         case CHAN_MODE_UNDEFINED:
1502                 break;
1503         }
1504
1505         if (sdata)
1506                 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1507         old_oper_type = local->_oper_channel_type;
1508
1509         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1510                 return -EBUSY;
1511
1512         old_oper = local->oper_channel;
1513         local->oper_channel = chan;
1514
1515         /* Update driver if changes were actually made. */
1516         if ((old_oper != local->oper_channel) ||
1517             (old_oper_type != local->_oper_channel_type))
1518                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1519
1520         if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1521             old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1522                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1523
1524         return 0;
1525 }
1526
1527 #ifdef CONFIG_PM
1528 static int ieee80211_suspend(struct wiphy *wiphy,
1529                              struct cfg80211_wowlan *wowlan)
1530 {
1531         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1532 }
1533
1534 static int ieee80211_resume(struct wiphy *wiphy)
1535 {
1536         return __ieee80211_resume(wiphy_priv(wiphy));
1537 }
1538 #else
1539 #define ieee80211_suspend NULL
1540 #define ieee80211_resume NULL
1541 #endif
1542
1543 static int ieee80211_scan(struct wiphy *wiphy,
1544                           struct net_device *dev,
1545                           struct cfg80211_scan_request *req)
1546 {
1547         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1548
1549         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1550         case NL80211_IFTYPE_STATION:
1551         case NL80211_IFTYPE_ADHOC:
1552         case NL80211_IFTYPE_MESH_POINT:
1553         case NL80211_IFTYPE_P2P_CLIENT:
1554                 break;
1555         case NL80211_IFTYPE_P2P_GO:
1556                 if (sdata->local->ops->hw_scan)
1557                         break;
1558                 /*
1559                  * FIXME: implement NoA while scanning in software,
1560                  * for now fall through to allow scanning only when
1561                  * beaconing hasn't been configured yet
1562                  */
1563         case NL80211_IFTYPE_AP:
1564                 if (sdata->u.ap.beacon)
1565                         return -EOPNOTSUPP;
1566                 break;
1567         default:
1568                 return -EOPNOTSUPP;
1569         }
1570
1571         return ieee80211_request_scan(sdata, req);
1572 }
1573
1574 static int
1575 ieee80211_sched_scan_start(struct wiphy *wiphy,
1576                            struct net_device *dev,
1577                            struct cfg80211_sched_scan_request *req)
1578 {
1579         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1580
1581         if (!sdata->local->ops->sched_scan_start)
1582                 return -EOPNOTSUPP;
1583
1584         return ieee80211_request_sched_scan_start(sdata, req);
1585 }
1586
1587 static int
1588 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1589 {
1590         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1591
1592         if (!sdata->local->ops->sched_scan_stop)
1593                 return -EOPNOTSUPP;
1594
1595         return ieee80211_request_sched_scan_stop(sdata);
1596 }
1597
1598 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1599                           struct cfg80211_auth_request *req)
1600 {
1601         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1602 }
1603
1604 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1605                            struct cfg80211_assoc_request *req)
1606 {
1607         struct ieee80211_local *local = wiphy_priv(wiphy);
1608         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1609
1610         switch (ieee80211_get_channel_mode(local, sdata)) {
1611         case CHAN_MODE_HOPPING:
1612                 return -EBUSY;
1613         case CHAN_MODE_FIXED:
1614                 if (local->oper_channel == req->bss->channel)
1615                         break;
1616                 return -EBUSY;
1617         case CHAN_MODE_UNDEFINED:
1618                 break;
1619         }
1620
1621         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1622 }
1623
1624 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1625                             struct cfg80211_deauth_request *req,
1626                             void *cookie)
1627 {
1628         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1629                                     req, cookie);
1630 }
1631
1632 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1633                               struct cfg80211_disassoc_request *req,
1634                               void *cookie)
1635 {
1636         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1637                                       req, cookie);
1638 }
1639
1640 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1641                                struct cfg80211_ibss_params *params)
1642 {
1643         struct ieee80211_local *local = wiphy_priv(wiphy);
1644         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1645
1646         switch (ieee80211_get_channel_mode(local, sdata)) {
1647         case CHAN_MODE_HOPPING:
1648                 return -EBUSY;
1649         case CHAN_MODE_FIXED:
1650                 if (!params->channel_fixed)
1651                         return -EBUSY;
1652                 if (local->oper_channel == params->channel)
1653                         break;
1654                 return -EBUSY;
1655         case CHAN_MODE_UNDEFINED:
1656                 break;
1657         }
1658
1659         return ieee80211_ibss_join(sdata, params);
1660 }
1661
1662 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1663 {
1664         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1665
1666         return ieee80211_ibss_leave(sdata);
1667 }
1668
1669 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1670 {
1671         struct ieee80211_local *local = wiphy_priv(wiphy);
1672         int err;
1673
1674         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1675                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1676
1677                 if (err)
1678                         return err;
1679         }
1680
1681         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1682                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1683
1684                 if (err)
1685                         return err;
1686         }
1687
1688         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1689                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1690
1691                 if (err)
1692                         return err;
1693         }
1694
1695         if (changed & WIPHY_PARAM_RETRY_SHORT)
1696                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1697         if (changed & WIPHY_PARAM_RETRY_LONG)
1698                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1699         if (changed &
1700             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1701                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1702
1703         return 0;
1704 }
1705
1706 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1707                                   enum nl80211_tx_power_setting type, int mbm)
1708 {
1709         struct ieee80211_local *local = wiphy_priv(wiphy);
1710         struct ieee80211_channel *chan = local->hw.conf.channel;
1711         u32 changes = 0;
1712
1713         switch (type) {
1714         case NL80211_TX_POWER_AUTOMATIC:
1715                 local->user_power_level = -1;
1716                 break;
1717         case NL80211_TX_POWER_LIMITED:
1718                 if (mbm < 0 || (mbm % 100))
1719                         return -EOPNOTSUPP;
1720                 local->user_power_level = MBM_TO_DBM(mbm);
1721                 break;
1722         case NL80211_TX_POWER_FIXED:
1723                 if (mbm < 0 || (mbm % 100))
1724                         return -EOPNOTSUPP;
1725                 /* TODO: move to cfg80211 when it knows the channel */
1726                 if (MBM_TO_DBM(mbm) > chan->max_power)
1727                         return -EINVAL;
1728                 local->user_power_level = MBM_TO_DBM(mbm);
1729                 break;
1730         }
1731
1732         ieee80211_hw_config(local, changes);
1733
1734         return 0;
1735 }
1736
1737 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1738 {
1739         struct ieee80211_local *local = wiphy_priv(wiphy);
1740
1741         *dbm = local->hw.conf.power_level;
1742
1743         return 0;
1744 }
1745
1746 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1747                                   const u8 *addr)
1748 {
1749         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1750
1751         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1752
1753         return 0;
1754 }
1755
1756 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1757 {
1758         struct ieee80211_local *local = wiphy_priv(wiphy);
1759
1760         drv_rfkill_poll(local);
1761 }
1762
1763 #ifdef CONFIG_NL80211_TESTMODE
1764 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1765 {
1766         struct ieee80211_local *local = wiphy_priv(wiphy);
1767
1768         if (!local->ops->testmode_cmd)
1769                 return -EOPNOTSUPP;
1770
1771         return local->ops->testmode_cmd(&local->hw, data, len);
1772 }
1773
1774 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1775                                    struct sk_buff *skb,
1776                                    struct netlink_callback *cb,
1777                                    void *data, int len)
1778 {
1779         struct ieee80211_local *local = wiphy_priv(wiphy);
1780
1781         if (!local->ops->testmode_dump)
1782                 return -EOPNOTSUPP;
1783
1784         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1785 }
1786 #endif
1787
1788 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1789                              enum ieee80211_smps_mode smps_mode)
1790 {
1791         const u8 *ap;
1792         enum ieee80211_smps_mode old_req;
1793         int err;
1794
1795         lockdep_assert_held(&sdata->u.mgd.mtx);
1796
1797         old_req = sdata->u.mgd.req_smps;
1798         sdata->u.mgd.req_smps = smps_mode;
1799
1800         if (old_req == smps_mode &&
1801             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1802                 return 0;
1803
1804         /*
1805          * If not associated, or current association is not an HT
1806          * association, there's no need to send an action frame.
1807          */
1808         if (!sdata->u.mgd.associated ||
1809             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1810                 mutex_lock(&sdata->local->iflist_mtx);
1811                 ieee80211_recalc_smps(sdata->local);
1812                 mutex_unlock(&sdata->local->iflist_mtx);
1813                 return 0;
1814         }
1815
1816         ap = sdata->u.mgd.associated->bssid;
1817
1818         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1819                 if (sdata->u.mgd.powersave)
1820                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1821                 else
1822                         smps_mode = IEEE80211_SMPS_OFF;
1823         }
1824
1825         /* send SM PS frame to AP */
1826         err = ieee80211_send_smps_action(sdata, smps_mode,
1827                                          ap, ap);
1828         if (err)
1829                 sdata->u.mgd.req_smps = old_req;
1830
1831         return err;
1832 }
1833
1834 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1835                                     bool enabled, int timeout)
1836 {
1837         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1838         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1839
1840         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1841                 return -EOPNOTSUPP;
1842
1843         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1844                 return -EOPNOTSUPP;
1845
1846         if (enabled == sdata->u.mgd.powersave &&
1847             timeout == local->dynamic_ps_forced_timeout)
1848                 return 0;
1849
1850         sdata->u.mgd.powersave = enabled;
1851         local->dynamic_ps_forced_timeout = timeout;
1852
1853         /* no change, but if automatic follow powersave */
1854         mutex_lock(&sdata->u.mgd.mtx);
1855         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1856         mutex_unlock(&sdata->u.mgd.mtx);
1857
1858         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1859                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1860
1861         ieee80211_recalc_ps(local, -1);
1862
1863         return 0;
1864 }
1865
1866 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1867                                          struct net_device *dev,
1868                                          s32 rssi_thold, u32 rssi_hyst)
1869 {
1870         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1871         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1872         struct ieee80211_vif *vif = &sdata->vif;
1873         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1874
1875         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1876             rssi_hyst == bss_conf->cqm_rssi_hyst)
1877                 return 0;
1878
1879         bss_conf->cqm_rssi_thold = rssi_thold;
1880         bss_conf->cqm_rssi_hyst = rssi_hyst;
1881
1882         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1883                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1884                         return -EOPNOTSUPP;
1885                 return 0;
1886         }
1887
1888         /* tell the driver upon association, unless already associated */
1889         if (sdata->u.mgd.associated)
1890                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1891
1892         return 0;
1893 }
1894
1895 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1896                                       struct net_device *dev,
1897                                       const u8 *addr,
1898                                       const struct cfg80211_bitrate_mask *mask)
1899 {
1900         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1901         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1902         int i, ret;
1903
1904         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1905                 ret = drv_set_bitrate_mask(local, sdata, mask);
1906                 if (ret)
1907                         return ret;
1908         }
1909
1910         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1911                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1912
1913         return 0;
1914 }
1915
1916 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1917                                           struct net_device *dev,
1918                                           struct ieee80211_channel *chan,
1919                                           enum nl80211_channel_type chantype,
1920                                           unsigned int duration, u64 *cookie)
1921 {
1922         int ret;
1923         u32 random_cookie;
1924
1925         lockdep_assert_held(&local->mtx);
1926
1927         if (local->hw_roc_cookie)
1928                 return -EBUSY;
1929         /* must be nonzero */
1930         random_cookie = random32() | 1;
1931
1932         *cookie = random_cookie;
1933         local->hw_roc_dev = dev;
1934         local->hw_roc_cookie = random_cookie;
1935         local->hw_roc_channel = chan;
1936         local->hw_roc_channel_type = chantype;
1937         local->hw_roc_duration = duration;
1938         ret = drv_remain_on_channel(local, chan, chantype, duration);
1939         if (ret) {
1940                 local->hw_roc_channel = NULL;
1941                 local->hw_roc_cookie = 0;
1942         }
1943
1944         return ret;
1945 }
1946
1947 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1948                                        struct net_device *dev,
1949                                        struct ieee80211_channel *chan,
1950                                        enum nl80211_channel_type channel_type,
1951                                        unsigned int duration,
1952                                        u64 *cookie)
1953 {
1954         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1955         struct ieee80211_local *local = sdata->local;
1956
1957         if (local->ops->remain_on_channel) {
1958                 int ret;
1959
1960                 mutex_lock(&local->mtx);
1961                 ret = ieee80211_remain_on_channel_hw(local, dev,
1962                                                      chan, channel_type,
1963                                                      duration, cookie);
1964                 local->hw_roc_for_tx = false;
1965                 mutex_unlock(&local->mtx);
1966
1967                 return ret;
1968         }
1969
1970         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1971                                               duration, cookie);
1972 }
1973
1974 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1975                                                  u64 cookie)
1976 {
1977         int ret;
1978
1979         lockdep_assert_held(&local->mtx);
1980
1981         if (local->hw_roc_cookie != cookie)
1982                 return -ENOENT;
1983
1984         ret = drv_cancel_remain_on_channel(local);
1985         if (ret)
1986                 return ret;
1987
1988         local->hw_roc_cookie = 0;
1989         local->hw_roc_channel = NULL;
1990
1991         ieee80211_recalc_idle(local);
1992
1993         return 0;
1994 }
1995
1996 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1997                                               struct net_device *dev,
1998                                               u64 cookie)
1999 {
2000         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2001         struct ieee80211_local *local = sdata->local;
2002
2003         if (local->ops->cancel_remain_on_channel) {
2004                 int ret;
2005
2006                 mutex_lock(&local->mtx);
2007                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2008                 mutex_unlock(&local->mtx);
2009
2010                 return ret;
2011         }
2012
2013         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
2014 }
2015
2016 static enum work_done_result
2017 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
2018 {
2019         /*
2020          * Use the data embedded in the work struct for reporting
2021          * here so if the driver mangled the SKB before dropping
2022          * it (which is the only way we really should get here)
2023          * then we don't report mangled data.
2024          *
2025          * If there was no wait time, then by the time we get here
2026          * the driver will likely not have reported the status yet,
2027          * so in that case userspace will have to deal with it.
2028          */
2029
2030         if (wk->offchan_tx.wait && !wk->offchan_tx.status)
2031                 cfg80211_mgmt_tx_status(wk->sdata->dev,
2032                                         (unsigned long) wk->offchan_tx.frame,
2033                                         wk->ie, wk->ie_len, false, GFP_KERNEL);
2034
2035         return WORK_DONE_DESTROY;
2036 }
2037
2038 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
2039                              struct ieee80211_channel *chan, bool offchan,
2040                              enum nl80211_channel_type channel_type,
2041                              bool channel_type_valid, unsigned int wait,
2042                              const u8 *buf, size_t len, bool no_cck,
2043                              bool dont_wait_for_ack, u64 *cookie)
2044 {
2045         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2046         struct ieee80211_local *local = sdata->local;
2047         struct sk_buff *skb;
2048         struct sta_info *sta;
2049         struct ieee80211_work *wk;
2050         const struct ieee80211_mgmt *mgmt = (void *)buf;
2051         u32 flags;
2052         bool is_offchan = false;
2053
2054         if (dont_wait_for_ack)
2055                 flags = IEEE80211_TX_CTL_NO_ACK;
2056         else
2057                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2058                         IEEE80211_TX_CTL_REQ_TX_STATUS;
2059
2060         /* Check that we are on the requested channel for transmission */
2061         if (chan != local->tmp_channel &&
2062             chan != local->oper_channel)
2063                 is_offchan = true;
2064         if (channel_type_valid &&
2065             (channel_type != local->tmp_channel_type &&
2066              channel_type != local->_oper_channel_type))
2067                 is_offchan = true;
2068
2069         if (chan == local->hw_roc_channel) {
2070                 /* TODO: check channel type? */
2071                 is_offchan = false;
2072                 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2073         }
2074
2075         if (no_cck)
2076                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2077
2078         if (is_offchan && !offchan)
2079                 return -EBUSY;
2080
2081         switch (sdata->vif.type) {
2082         case NL80211_IFTYPE_ADHOC:
2083         case NL80211_IFTYPE_AP:
2084         case NL80211_IFTYPE_AP_VLAN:
2085         case NL80211_IFTYPE_P2P_GO:
2086         case NL80211_IFTYPE_MESH_POINT:
2087                 if (!ieee80211_is_action(mgmt->frame_control) ||
2088                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2089                         break;
2090                 rcu_read_lock();
2091                 sta = sta_info_get(sdata, mgmt->da);
2092                 rcu_read_unlock();
2093                 if (!sta)
2094                         return -ENOLINK;
2095                 break;
2096         case NL80211_IFTYPE_STATION:
2097         case NL80211_IFTYPE_P2P_CLIENT:
2098                 break;
2099         default:
2100                 return -EOPNOTSUPP;
2101         }
2102
2103         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2104         if (!skb)
2105                 return -ENOMEM;
2106         skb_reserve(skb, local->hw.extra_tx_headroom);
2107
2108         memcpy(skb_put(skb, len), buf, len);
2109
2110         IEEE80211_SKB_CB(skb)->flags = flags;
2111
2112         skb->dev = sdata->dev;
2113
2114         *cookie = (unsigned long) skb;
2115
2116         if (is_offchan && local->ops->remain_on_channel) {
2117                 unsigned int duration;
2118                 int ret;
2119
2120                 mutex_lock(&local->mtx);
2121                 /*
2122                  * If the duration is zero, then the driver
2123                  * wouldn't actually do anything. Set it to
2124                  * 100 for now.
2125                  *
2126                  * TODO: cancel the off-channel operation
2127                  *       when we get the SKB's TX status and
2128                  *       the wait time was zero before.
2129                  */
2130                 duration = 100;
2131                 if (wait)
2132                         duration = wait;
2133                 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
2134                                                      channel_type,
2135                                                      duration, cookie);
2136                 if (ret) {
2137                         kfree_skb(skb);
2138                         mutex_unlock(&local->mtx);
2139                         return ret;
2140                 }
2141
2142                 local->hw_roc_for_tx = true;
2143                 local->hw_roc_duration = wait;
2144
2145                 /*
2146                  * queue up frame for transmission after
2147                  * ieee80211_ready_on_channel call
2148                  */
2149
2150                 /* modify cookie to prevent API mismatches */
2151                 *cookie ^= 2;
2152                 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2153                 local->hw_roc_skb = skb;
2154                 local->hw_roc_skb_for_status = skb;
2155                 mutex_unlock(&local->mtx);
2156
2157                 return 0;
2158         }
2159
2160         /*
2161          * Can transmit right away if the channel was the
2162          * right one and there's no wait involved... If a
2163          * wait is involved, we might otherwise not be on
2164          * the right channel for long enough!
2165          */
2166         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
2167                 ieee80211_tx_skb(sdata, skb);
2168                 return 0;
2169         }
2170
2171         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
2172         if (!wk) {
2173                 kfree_skb(skb);
2174                 return -ENOMEM;
2175         }
2176
2177         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
2178         wk->chan = chan;
2179         wk->chan_type = channel_type;
2180         wk->sdata = sdata;
2181         wk->done = ieee80211_offchan_tx_done;
2182         wk->offchan_tx.frame = skb;
2183         wk->offchan_tx.wait = wait;
2184         wk->ie_len = len;
2185         memcpy(wk->ie, buf, len);
2186
2187         ieee80211_add_work(wk);
2188         return 0;
2189 }
2190
2191 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2192                                          struct net_device *dev,
2193                                          u64 cookie)
2194 {
2195         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2196         struct ieee80211_local *local = sdata->local;
2197         struct ieee80211_work *wk;
2198         int ret = -ENOENT;
2199
2200         mutex_lock(&local->mtx);
2201
2202         if (local->ops->cancel_remain_on_channel) {
2203                 cookie ^= 2;
2204                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2205
2206                 if (ret == 0) {
2207                         kfree_skb(local->hw_roc_skb);
2208                         local->hw_roc_skb = NULL;
2209                         local->hw_roc_skb_for_status = NULL;
2210                 }
2211
2212                 mutex_unlock(&local->mtx);
2213
2214                 return ret;
2215         }
2216
2217         list_for_each_entry(wk, &local->work_list, list) {
2218                 if (wk->sdata != sdata)
2219                         continue;
2220
2221                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2222                         continue;
2223
2224                 if (cookie != (unsigned long) wk->offchan_tx.frame)
2225                         continue;
2226
2227                 wk->timeout = jiffies;
2228
2229                 ieee80211_queue_work(&local->hw, &local->work_work);
2230                 ret = 0;
2231                 break;
2232         }
2233         mutex_unlock(&local->mtx);
2234
2235         return ret;
2236 }
2237
2238 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2239                                           struct net_device *dev,
2240                                           u16 frame_type, bool reg)
2241 {
2242         struct ieee80211_local *local = wiphy_priv(wiphy);
2243
2244         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2245                 return;
2246
2247         if (reg)
2248                 local->probe_req_reg++;
2249         else
2250                 local->probe_req_reg--;
2251
2252         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2253 }
2254
2255 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2256 {
2257         struct ieee80211_local *local = wiphy_priv(wiphy);
2258
2259         if (local->started)
2260                 return -EOPNOTSUPP;
2261
2262         return drv_set_antenna(local, tx_ant, rx_ant);
2263 }
2264
2265 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2266 {
2267         struct ieee80211_local *local = wiphy_priv(wiphy);
2268
2269         return drv_get_antenna(local, tx_ant, rx_ant);
2270 }
2271
2272 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2273 {
2274         struct ieee80211_local *local = wiphy_priv(wiphy);
2275
2276         return drv_set_ringparam(local, tx, rx);
2277 }
2278
2279 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2280                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2281 {
2282         struct ieee80211_local *local = wiphy_priv(wiphy);
2283
2284         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2285 }
2286
2287 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2288                                     struct net_device *dev,
2289                                     struct cfg80211_gtk_rekey_data *data)
2290 {
2291         struct ieee80211_local *local = wiphy_priv(wiphy);
2292         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2293
2294         if (!local->ops->set_rekey_data)
2295                 return -EOPNOTSUPP;
2296
2297         drv_set_rekey_data(local, sdata, data);
2298
2299         return 0;
2300 }
2301
2302 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2303 {
2304         u8 *pos = (void *)skb_put(skb, 7);
2305
2306         *pos++ = WLAN_EID_EXT_CAPABILITY;
2307         *pos++ = 5; /* len */
2308         *pos++ = 0x0;
2309         *pos++ = 0x0;
2310         *pos++ = 0x0;
2311         *pos++ = 0x0;
2312         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2313 }
2314
2315 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2316 {
2317         struct ieee80211_local *local = sdata->local;
2318         u16 capab;
2319
2320         capab = 0;
2321         if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2322                 return capab;
2323
2324         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2325                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2326         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2327                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2328
2329         return capab;
2330 }
2331
2332 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2333                                        u8 *peer, u8 *bssid)
2334 {
2335         struct ieee80211_tdls_lnkie *lnkid;
2336
2337         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2338
2339         lnkid->ie_type = WLAN_EID_LINK_ID;
2340         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2341
2342         memcpy(lnkid->bssid, bssid, ETH_ALEN);
2343         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2344         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2345 }
2346
2347 static int
2348 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2349                                u8 *peer, u8 action_code, u8 dialog_token,
2350                                u16 status_code, struct sk_buff *skb)
2351 {
2352         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2353         struct ieee80211_tdls_data *tf;
2354
2355         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2356
2357         memcpy(tf->da, peer, ETH_ALEN);
2358         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2359         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2360         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2361
2362         switch (action_code) {
2363         case WLAN_TDLS_SETUP_REQUEST:
2364                 tf->category = WLAN_CATEGORY_TDLS;
2365                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2366
2367                 skb_put(skb, sizeof(tf->u.setup_req));
2368                 tf->u.setup_req.dialog_token = dialog_token;
2369                 tf->u.setup_req.capability =
2370                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2371
2372                 ieee80211_add_srates_ie(&sdata->vif, skb);
2373                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2374                 ieee80211_tdls_add_ext_capab(skb);
2375                 break;
2376         case WLAN_TDLS_SETUP_RESPONSE:
2377                 tf->category = WLAN_CATEGORY_TDLS;
2378                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2379
2380                 skb_put(skb, sizeof(tf->u.setup_resp));
2381                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2382                 tf->u.setup_resp.dialog_token = dialog_token;
2383                 tf->u.setup_resp.capability =
2384                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2385
2386                 ieee80211_add_srates_ie(&sdata->vif, skb);
2387                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2388                 ieee80211_tdls_add_ext_capab(skb);
2389                 break;
2390         case WLAN_TDLS_SETUP_CONFIRM:
2391                 tf->category = WLAN_CATEGORY_TDLS;
2392                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2393
2394                 skb_put(skb, sizeof(tf->u.setup_cfm));
2395                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2396                 tf->u.setup_cfm.dialog_token = dialog_token;
2397                 break;
2398         case WLAN_TDLS_TEARDOWN:
2399                 tf->category = WLAN_CATEGORY_TDLS;
2400                 tf->action_code = WLAN_TDLS_TEARDOWN;
2401
2402                 skb_put(skb, sizeof(tf->u.teardown));
2403                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2404                 break;
2405         case WLAN_TDLS_DISCOVERY_REQUEST:
2406                 tf->category = WLAN_CATEGORY_TDLS;
2407                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2408
2409                 skb_put(skb, sizeof(tf->u.discover_req));
2410                 tf->u.discover_req.dialog_token = dialog_token;
2411                 break;
2412         default:
2413                 return -EINVAL;
2414         }
2415
2416         return 0;
2417 }
2418
2419 static int
2420 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2421                            u8 *peer, u8 action_code, u8 dialog_token,
2422                            u16 status_code, struct sk_buff *skb)
2423 {
2424         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2425         struct ieee80211_mgmt *mgmt;
2426
2427         mgmt = (void *)skb_put(skb, 24);
2428         memset(mgmt, 0, 24);
2429         memcpy(mgmt->da, peer, ETH_ALEN);
2430         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2431         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2432
2433         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2434                                           IEEE80211_STYPE_ACTION);
2435
2436         switch (action_code) {
2437         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2438                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2439                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2440                 mgmt->u.action.u.tdls_discover_resp.action_code =
2441                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2442                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2443                         dialog_token;
2444                 mgmt->u.action.u.tdls_discover_resp.capability =
2445                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2446
2447                 ieee80211_add_srates_ie(&sdata->vif, skb);
2448                 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2449                 ieee80211_tdls_add_ext_capab(skb);
2450                 break;
2451         default:
2452                 return -EINVAL;
2453         }
2454
2455         return 0;
2456 }
2457
2458 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2459                                u8 *peer, u8 action_code, u8 dialog_token,
2460                                u16 status_code, const u8 *extra_ies,
2461                                size_t extra_ies_len)
2462 {
2463         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2464         struct ieee80211_local *local = sdata->local;
2465         struct ieee80211_tx_info *info;
2466         struct sk_buff *skb = NULL;
2467         bool send_direct;
2468         int ret;
2469
2470         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2471                 return -ENOTSUPP;
2472
2473         /* make sure we are in managed mode, and associated */
2474         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2475             !sdata->u.mgd.associated)
2476                 return -EINVAL;
2477
2478 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2479         printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer);
2480 #endif
2481
2482         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2483                             max(sizeof(struct ieee80211_mgmt),
2484                                 sizeof(struct ieee80211_tdls_data)) +
2485                             50 + /* supported rates */
2486                             7 + /* ext capab */
2487                             extra_ies_len +
2488                             sizeof(struct ieee80211_tdls_lnkie));
2489         if (!skb)
2490                 return -ENOMEM;
2491
2492         info = IEEE80211_SKB_CB(skb);
2493         skb_reserve(skb, local->hw.extra_tx_headroom);
2494
2495         switch (action_code) {
2496         case WLAN_TDLS_SETUP_REQUEST:
2497         case WLAN_TDLS_SETUP_RESPONSE:
2498         case WLAN_TDLS_SETUP_CONFIRM:
2499         case WLAN_TDLS_TEARDOWN:
2500         case WLAN_TDLS_DISCOVERY_REQUEST:
2501                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2502                                                      action_code, dialog_token,
2503                                                      status_code, skb);
2504                 send_direct = false;
2505                 break;
2506         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2507                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2508                                                  dialog_token, status_code,
2509                                                  skb);
2510                 send_direct = true;
2511                 break;
2512         default:
2513                 ret = -ENOTSUPP;
2514                 break;
2515         }
2516
2517         if (ret < 0)
2518                 goto fail;
2519
2520         if (extra_ies_len)
2521                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2522
2523         /* the TDLS link IE is always added last */
2524         switch (action_code) {
2525         case WLAN_TDLS_SETUP_REQUEST:
2526         case WLAN_TDLS_SETUP_CONFIRM:
2527         case WLAN_TDLS_TEARDOWN:
2528         case WLAN_TDLS_DISCOVERY_REQUEST:
2529                 /* we are the initiator */
2530                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2531                                            sdata->u.mgd.bssid);
2532                 break;
2533         case WLAN_TDLS_SETUP_RESPONSE:
2534         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2535                 /* we are the responder */
2536                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2537                                            sdata->u.mgd.bssid);
2538                 break;
2539         default:
2540                 ret = -ENOTSUPP;
2541                 goto fail;
2542         }
2543
2544         if (send_direct) {
2545                 ieee80211_tx_skb(sdata, skb);
2546                 return 0;
2547         }
2548
2549         /*
2550          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2551          * we should default to AC_VI.
2552          */
2553         switch (action_code) {
2554         case WLAN_TDLS_SETUP_REQUEST:
2555         case WLAN_TDLS_SETUP_RESPONSE:
2556                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2557                 skb->priority = 2;
2558                 break;
2559         default:
2560                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2561                 skb->priority = 5;
2562                 break;
2563         }
2564
2565         /* disable bottom halves when entering the Tx path */
2566         local_bh_disable();
2567         ret = ieee80211_subif_start_xmit(skb, dev);
2568         local_bh_enable();
2569
2570         return ret;
2571
2572 fail:
2573         dev_kfree_skb(skb);
2574         return ret;
2575 }
2576
2577 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2578                                u8 *peer, enum nl80211_tdls_operation oper)
2579 {
2580         struct sta_info *sta;
2581         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2582
2583         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2584                 return -ENOTSUPP;
2585
2586         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2587                 return -EINVAL;
2588
2589 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2590         printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer);
2591 #endif
2592
2593         switch (oper) {
2594         case NL80211_TDLS_ENABLE_LINK:
2595                 rcu_read_lock();
2596                 sta = sta_info_get(sdata, peer);
2597                 if (!sta) {
2598                         rcu_read_unlock();
2599                         return -ENOLINK;
2600                 }
2601
2602                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2603                 rcu_read_unlock();
2604                 break;
2605         case NL80211_TDLS_DISABLE_LINK:
2606                 return sta_info_destroy_addr(sdata, peer);
2607         case NL80211_TDLS_TEARDOWN:
2608         case NL80211_TDLS_SETUP:
2609         case NL80211_TDLS_DISCOVERY_REQ:
2610                 /* We don't support in-driver setup/teardown/discovery */
2611                 return -ENOTSUPP;
2612         default:
2613                 return -ENOTSUPP;
2614         }
2615
2616         return 0;
2617 }
2618
2619 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2620                                   const u8 *peer, u64 *cookie)
2621 {
2622         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2623         struct ieee80211_local *local = sdata->local;
2624         struct ieee80211_qos_hdr *nullfunc;
2625         struct sk_buff *skb;
2626         int size = sizeof(*nullfunc);
2627         __le16 fc;
2628         bool qos;
2629         struct ieee80211_tx_info *info;
2630         struct sta_info *sta;
2631
2632         rcu_read_lock();
2633         sta = sta_info_get(sdata, peer);
2634         if (sta) {
2635                 qos = test_sta_flag(sta, WLAN_STA_WME);
2636                 rcu_read_unlock();
2637         } else {
2638                 rcu_read_unlock();
2639                 return -ENOLINK;
2640         }
2641
2642         if (qos) {
2643                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2644                                  IEEE80211_STYPE_QOS_NULLFUNC |
2645                                  IEEE80211_FCTL_FROMDS);
2646         } else {
2647                 size -= 2;
2648                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2649                                  IEEE80211_STYPE_NULLFUNC |
2650                                  IEEE80211_FCTL_FROMDS);
2651         }
2652
2653         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
2654         if (!skb)
2655                 return -ENOMEM;
2656
2657         skb->dev = dev;
2658
2659         skb_reserve(skb, local->hw.extra_tx_headroom);
2660
2661         nullfunc = (void *) skb_put(skb, size);
2662         nullfunc->frame_control = fc;
2663         nullfunc->duration_id = 0;
2664         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
2665         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
2666         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
2667         nullfunc->seq_ctrl = 0;
2668
2669         info = IEEE80211_SKB_CB(skb);
2670
2671         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
2672                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
2673
2674         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
2675         skb->priority = 7;
2676         if (qos)
2677                 nullfunc->qos_ctrl = cpu_to_le16(7);
2678
2679         local_bh_disable();
2680         ieee80211_xmit(sdata, skb);
2681         local_bh_enable();
2682
2683         *cookie = (unsigned long) skb;
2684         return 0;
2685 }
2686
2687 static struct ieee80211_channel *
2688 ieee80211_wiphy_get_channel(struct wiphy *wiphy)
2689 {
2690         struct ieee80211_local *local = wiphy_priv(wiphy);
2691
2692         return local->oper_channel;
2693 }
2694
2695 struct cfg80211_ops mac80211_config_ops = {
2696         .add_virtual_intf = ieee80211_add_iface,
2697         .del_virtual_intf = ieee80211_del_iface,
2698         .change_virtual_intf = ieee80211_change_iface,
2699         .add_key = ieee80211_add_key,
2700         .del_key = ieee80211_del_key,
2701         .get_key = ieee80211_get_key,
2702         .set_default_key = ieee80211_config_default_key,
2703         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2704         .add_beacon = ieee80211_add_beacon,
2705         .set_beacon = ieee80211_set_beacon,
2706         .del_beacon = ieee80211_del_beacon,
2707         .add_station = ieee80211_add_station,
2708         .del_station = ieee80211_del_station,
2709         .change_station = ieee80211_change_station,
2710         .get_station = ieee80211_get_station,
2711         .dump_station = ieee80211_dump_station,
2712         .dump_survey = ieee80211_dump_survey,
2713 #ifdef CONFIG_MAC80211_MESH
2714         .add_mpath = ieee80211_add_mpath,
2715         .del_mpath = ieee80211_del_mpath,
2716         .change_mpath = ieee80211_change_mpath,
2717         .get_mpath = ieee80211_get_mpath,
2718         .dump_mpath = ieee80211_dump_mpath,
2719         .update_mesh_config = ieee80211_update_mesh_config,
2720         .get_mesh_config = ieee80211_get_mesh_config,
2721         .join_mesh = ieee80211_join_mesh,
2722         .leave_mesh = ieee80211_leave_mesh,
2723 #endif
2724         .change_bss = ieee80211_change_bss,
2725         .set_txq_params = ieee80211_set_txq_params,
2726         .set_channel = ieee80211_set_channel,
2727         .suspend = ieee80211_suspend,
2728         .resume = ieee80211_resume,
2729         .scan = ieee80211_scan,
2730         .sched_scan_start = ieee80211_sched_scan_start,
2731         .sched_scan_stop = ieee80211_sched_scan_stop,
2732         .auth = ieee80211_auth,
2733         .assoc = ieee80211_assoc,
2734         .deauth = ieee80211_deauth,
2735         .disassoc = ieee80211_disassoc,
2736         .join_ibss = ieee80211_join_ibss,
2737         .leave_ibss = ieee80211_leave_ibss,
2738         .set_wiphy_params = ieee80211_set_wiphy_params,
2739         .set_tx_power = ieee80211_set_tx_power,
2740         .get_tx_power = ieee80211_get_tx_power,
2741         .set_wds_peer = ieee80211_set_wds_peer,
2742         .rfkill_poll = ieee80211_rfkill_poll,
2743         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2744         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2745         .set_power_mgmt = ieee80211_set_power_mgmt,
2746         .set_bitrate_mask = ieee80211_set_bitrate_mask,
2747         .remain_on_channel = ieee80211_remain_on_channel,
2748         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2749         .mgmt_tx = ieee80211_mgmt_tx,
2750         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2751         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2752         .mgmt_frame_register = ieee80211_mgmt_frame_register,
2753         .set_antenna = ieee80211_set_antenna,
2754         .get_antenna = ieee80211_get_antenna,
2755         .set_ringparam = ieee80211_set_ringparam,
2756         .get_ringparam = ieee80211_get_ringparam,
2757         .set_rekey_data = ieee80211_set_rekey_data,
2758         .tdls_oper = ieee80211_tdls_oper,
2759         .tdls_mgmt = ieee80211_tdls_mgmt,
2760         .probe_client = ieee80211_probe_client,
2761         .get_channel = ieee80211_wiphy_get_channel,
2762         .set_noack_map = ieee80211_set_noack_map,
2763 };