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 void sta_set_rate_info_tx(struct sta_info *sta,
 340                           const struct ieee80211_tx_rate *rate,
 341                           struct rate_info *rinfo)
 342 {
 343         rinfo->flags = 0;
 344         if (rate->flags & IEEE80211_TX_RC_MCS)
 345                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 346         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 347                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 348         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 349                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 350         rate_idx_to_bitrate(rinfo, sta, rate->idx);
 351 }
 352
 353 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 354 {
 355         struct ieee80211_sub_if_data *sdata = sta->sdata;
 356         struct timespec uptime;
 357
 358         sinfo->generation = sdata->local->sta_generation;
 359
 360         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 361                         STATION_INFO_RX_BYTES |
 362                         STATION_INFO_TX_BYTES |
 363                         STATION_INFO_RX_PACKETS |
 364                         STATION_INFO_TX_PACKETS |
 365                         STATION_INFO_TX_RETRIES |
 366                         STATION_INFO_TX_FAILED |
 367                         STATION_INFO_TX_BITRATE |
 368                         STATION_INFO_RX_BITRATE |
 369                         STATION_INFO_RX_DROP_MISC |
 370                         STATION_INFO_BSS_PARAM |
 371                         STATION_INFO_CONNECTED_TIME |
 372                         STATION_INFO_STA_FLAGS |
 373                         STATION_INFO_BEACON_LOSS_COUNT;
 374
 375         do_posix_clock_monotonic_gettime(&uptime);
 376         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 377
 378         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 379         sinfo->rx_bytes = sta->rx_bytes;
 380         sinfo->tx_bytes = sta->tx_bytes;
 381         sinfo->rx_packets = sta->rx_packets;
 382         sinfo->tx_packets = sta->tx_packets;
 383         sinfo->tx_retries = sta->tx_retry_count;
 384         sinfo->tx_failed = sta->tx_retry_failed;
 385         sinfo->rx_dropped_misc = sta->rx_dropped;
 386         sinfo->beacon_loss_count = sta->beacon_loss_count;
 387
 388         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 389             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 390                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 391                 sinfo->signal = (s8)sta->last_signal;
 392                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 393         }
 394
 395         sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
 396
 397         sinfo->rxrate.flags = 0;
 398         if (sta->last_rx_rate_flag & RX_FLAG_HT)
 399                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
 400         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 401                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 402         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 403                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 404         rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
 405
 406         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 407 #ifdef CONFIG_MAC80211_MESH
 408                 sinfo->filled |= STATION_INFO_LLID |
 409                                  STATION_INFO_PLID |
 410                                  STATION_INFO_PLINK_STATE;
 411
 412                 sinfo->llid = le16_to_cpu(sta->llid);
 413                 sinfo->plid = le16_to_cpu(sta->plid);
 414                 sinfo->plink_state = sta->plink_state;
 415                 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
 416                         sinfo->filled |= STATION_INFO_T_OFFSET;
 417                         sinfo->t_offset = sta->t_offset;
 418                 }
 419 #endif
 420         }
 421
 422         sinfo->bss_param.flags = 0;
 423         if (sdata->vif.bss_conf.use_cts_prot)
 424                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 425         if (sdata->vif.bss_conf.use_short_preamble)
 426                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 427         if (sdata->vif.bss_conf.use_short_slot)
 428                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 429         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 430         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 431
 432         sinfo->sta_flags.set = 0;
 433         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 434                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 435                                 BIT(NL80211_STA_FLAG_WME) |
 436                                 BIT(NL80211_STA_FLAG_MFP) |
 437                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 438                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 439         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 440                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 441         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 442                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 443         if (test_sta_flag(sta, WLAN_STA_WME))
 444                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 445         if (test_sta_flag(sta, WLAN_STA_MFP))
 446                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 447         if (test_sta_flag(sta, WLAN_STA_AUTH))
 448                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 449         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 450                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 451 }
 452
 453
 454 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 455                                  int idx, u8 *mac, struct station_info *sinfo)
 456 {
 457         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 458         struct sta_info *sta;
 459         int ret = -ENOENT;
 460
 461         rcu_read_lock();
 462
 463         sta = sta_info_get_by_idx(sdata, idx);
 464         if (sta) {
 465                 ret = 0;
 466                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 467                 sta_set_sinfo(sta, sinfo);
 468         }
 469
 470         rcu_read_unlock();
 471
 472         return ret;
 473 }
 474
 475 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 476                                  int idx, struct survey_info *survey)
 477 {
 478         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 479
 480         return drv_get_survey(local, idx, survey);
 481 }
 482
 483 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 484                                  u8 *mac, struct station_info *sinfo)
 485 {
 486         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 487         struct sta_info *sta;
 488         int ret = -ENOENT;
 489
 490         rcu_read_lock();
 491
 492         sta = sta_info_get_bss(sdata, mac);
 493         if (sta) {
 494                 ret = 0;
 495                 sta_set_sinfo(sta, sinfo);
 496         }
 497
 498         rcu_read_unlock();
 499
 500         return ret;
 501 }
 502
 503 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 504                                     const u8 *resp, size_t resp_len)
 505 {
 506         struct sk_buff *new, *old;
 507
 508         if (!resp || !resp_len)
 509                 return 1;
 510
 511         old = rtnl_dereference(sdata->u.ap.probe_resp);
 512
 513         new = dev_alloc_skb(resp_len);
 514         if (!new)
 515                 return -ENOMEM;
 516
 517         memcpy(skb_put(new, resp_len), resp, resp_len);
 518
 519         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 520         if (old) {
 521                 /* TODO: use call_rcu() */
 522                 synchronize_rcu();
 523                 dev_kfree_skb(old);
 524         }
 525
 526         return 0;
 527 }
 528
 529 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 530                                    struct cfg80211_beacon_data *params)
 531 {
 532         struct beacon_data *new, *old;
 533         int new_head_len, new_tail_len;
 534         int size, err;
 535         u32 changed = BSS_CHANGED_BEACON;
 536
 537         old = rtnl_dereference(sdata->u.ap.beacon);
 538
 539         /* Need to have a beacon head if we don't have one yet */
 540         if (!params->head && !old)
 541                 return -EINVAL;
 542
 543         /* new or old head? */
 544         if (params->head)
 545                 new_head_len = params->head_len;
 546         else
 547                 new_head_len = old->head_len;
 548
 549         /* new or old tail? */
 550         if (params->tail || !old)
 551                 /* params->tail_len will be zero for !params->tail */
 552                 new_tail_len = params->tail_len;
 553         else
 554                 new_tail_len = old->tail_len;
 555
 556         size = sizeof(*new) + new_head_len + new_tail_len;
 557
 558         new = kzalloc(size, GFP_KERNEL);
 559         if (!new)
 560                 return -ENOMEM;
 561
 562         /* start filling the new info now */
 563
 564         /*
 565          * pointers go into the block we allocated,
 566          * memory is | beacon_data | head | tail |
 567          */
 568         new->head = ((u8 *) new) + sizeof(*new);
 569         new->tail = new->head + new_head_len;
 570         new->head_len = new_head_len;
 571         new->tail_len = new_tail_len;
 572
 573         /* copy in head */
 574         if (params->head)
 575                 memcpy(new->head, params->head, new_head_len);
 576         else
 577                 memcpy(new->head, old->head, new_head_len);
 578
 579         /* copy in optional tail */
 580         if (params->tail)
 581                 memcpy(new->tail, params->tail, new_tail_len);
 582         else
 583                 if (old)
 584                         memcpy(new->tail, old->tail, new_tail_len);
 585
 586         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 587                                        params->probe_resp_len);
 588         if (err < 0)
 589                 return err;
 590         if (err == 0)
 591                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 592
 593         rcu_assign_pointer(sdata->u.ap.beacon, new);
 594
 595         if (old)
 596                 kfree_rcu(old, rcu_head);
 597
 598         return changed;
 599 }
 600
 601 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 602                               struct cfg80211_ap_settings *params)
 603 {
 604         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 605         struct beacon_data *old;
 606         struct ieee80211_sub_if_data *vlan;
 607         u32 changed = BSS_CHANGED_BEACON_INT |
 608                       BSS_CHANGED_BEACON_ENABLED |
 609                       BSS_CHANGED_BEACON |
 610                       BSS_CHANGED_SSID;
 611         int err;
 612
 613         old = rtnl_dereference(sdata->u.ap.beacon);
 614         if (old)
 615                 return -EALREADY;
 616
 617         /*
 618          * Apply control port protocol, this allows us to
 619          * not encrypt dynamic WEP control frames.
 620          */
 621         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 622         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 623         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 624                 vlan->control_port_protocol =
 625                         params->crypto.control_port_ethertype;
 626                 vlan->control_port_no_encrypt =
 627                         params->crypto.control_port_no_encrypt;
 628         }
 629
 630         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 631         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 632
 633         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 634         if (params->ssid_len)
 635                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 636                        params->ssid_len);
 637         sdata->vif.bss_conf.hidden_ssid =
 638                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 639
 640         err = ieee80211_assign_beacon(sdata, &params->beacon);
 641         if (err < 0)
 642                 return err;
 643         changed |= err;
 644
 645         ieee80211_bss_info_change_notify(sdata, changed);
 646
 647         netif_carrier_on(dev);
 648         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 649                 netif_carrier_on(vlan->dev);
 650
 651         return 0;
 652 }
 653
 654 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 655                                    struct cfg80211_beacon_data *params)
 656 {
 657         struct ieee80211_sub_if_data *sdata;
 658         struct beacon_data *old;
 659         int err;
 660
 661         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 662
 663         old = rtnl_dereference(sdata->u.ap.beacon);
 664         if (!old)
 665                 return -ENOENT;
 666
 667         err = ieee80211_assign_beacon(sdata, params);
 668         if (err < 0)
 669                 return err;
 670         ieee80211_bss_info_change_notify(sdata, err);
 671         return 0;
 672 }
 673
 674 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 675 {
 676         struct ieee80211_sub_if_data *sdata, *vlan;
 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         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 686                 netif_carrier_off(vlan->dev);
 687         netif_carrier_off(dev);
 688
 689         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 690
 691         kfree_rcu(old, rcu_head);
 692
 693         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 694
 695         return 0;
 696 }
 697
 698 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 699 struct iapp_layer2_update {
 700         u8 da[ETH_ALEN];        /* broadcast */
 701         u8 sa[ETH_ALEN];        /* STA addr */
 702         __be16 len;             /* 6 */
 703         u8 dsap;                /* 0 */
 704         u8 ssap;                /* 0 */
 705         u8 control;
 706         u8 xid_info[3];
 707 } __packed;
 708
 709 static void ieee80211_send_layer2_update(struct sta_info *sta)
 710 {
 711         struct iapp_layer2_update *msg;
 712         struct sk_buff *skb;
 713
 714         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 715          * bridge devices */
 716
 717         skb = dev_alloc_skb(sizeof(*msg));
 718         if (!skb)
 719                 return;
 720         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 721
 722         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 723          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 724
 725         memset(msg->da, 0xff, ETH_ALEN);
 726         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 727         msg->len = htons(6);
 728         msg->dsap = 0;
 729         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 730         msg->control = 0xaf;    /* XID response lsb.1111F101.
 731                                  * F=0 (no poll command; unsolicited frame) */
 732         msg->xid_info[0] = 0x81;        /* XID format identifier */
 733         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 734         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 735
 736         skb->dev = sta->sdata->dev;
 737         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 738         memset(skb->cb, 0, sizeof(skb->cb));
 739         netif_rx_ni(skb);
 740 }
 741
 742 static int sta_apply_parameters(struct ieee80211_local *local,
 743                                 struct sta_info *sta,
 744                                 struct station_parameters *params)
 745 {
 746         int ret = 0;
 747         u32 rates;
 748         int i, j;
 749         struct ieee80211_supported_band *sband;
 750         struct ieee80211_sub_if_data *sdata = sta->sdata;
 751         u32 mask, set;
 752
 753         sband = local->hw.wiphy->bands[local->oper_channel->band];
 754
 755         mask = params->sta_flags_mask;
 756         set = params->sta_flags_set;
 757
 758         /*
 759          * In mesh mode, we can clear AUTHENTICATED flag but must
 760          * also make ASSOCIATED follow appropriately for the driver
 761          * API. See also below, after AUTHORIZED changes.
 762          */
 763         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 764                 /* cfg80211 should not allow this in non-mesh modes */
 765                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
 766                         return -EINVAL;
 767
 768                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 769                     !test_sta_flag(sta, WLAN_STA_AUTH)) {
 770                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 771                         if (ret)
 772                                 return ret;
 773                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 774                         if (ret)
 775                                 return ret;
 776                 }
 777         }
 778
 779         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 780                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 781                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
 782                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 783                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 784                 if (ret)
 785                         return ret;
 786         }
 787
 788         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 789                 /* cfg80211 should not allow this in non-mesh modes */
 790                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
 791                         return -EINVAL;
 792
 793                 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
 794                     test_sta_flag(sta, WLAN_STA_AUTH)) {
 795                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 796                         if (ret)
 797                                 return ret;
 798                         ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
 799                         if (ret)
 800                                 return ret;
 801                 }
 802         }
 803
 804
 805         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 806                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 807                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
 808                 else
 809                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
 810         }
 811
 812         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 813                 if (set & BIT(NL80211_STA_FLAG_WME)) {
 814                         set_sta_flag(sta, WLAN_STA_WME);
 815                         sta->sta.wme = true;
 816                 } else {
 817                         clear_sta_flag(sta, WLAN_STA_WME);
 818                         sta->sta.wme = false;
 819                 }
 820         }
 821
 822         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 823                 if (set & BIT(NL80211_STA_FLAG_MFP))
 824                         set_sta_flag(sta, WLAN_STA_MFP);
 825                 else
 826                         clear_sta_flag(sta, WLAN_STA_MFP);
 827         }
 828
 829         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
 830                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
 831                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
 832                 else
 833                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
 834         }
 835
 836         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
 837                 sta->sta.uapsd_queues = params->uapsd_queues;
 838                 sta->sta.max_sp = params->max_sp;
 839         }
 840
 841         /*
 842          * cfg80211 validates this (1-2007) and allows setting the AID
 843          * only when creating a new station entry
 844          */
 845         if (params->aid)
 846                 sta->sta.aid = params->aid;
 847
 848         /*
 849          * FIXME: updating the following information is racy when this
 850          *        function is called from ieee80211_change_station().
 851          *        However, all this information should be static so
 852          *        maybe we should just reject attemps to change it.
 853          */
 854
 855         if (params->listen_interval >= 0)
 856                 sta->listen_interval = params->listen_interval;
 857
 858         if (params->supported_rates) {
 859                 rates = 0;
 860
 861                 for (i = 0; i < params->supported_rates_len; i++) {
 862                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 863                         for (j = 0; j < sband->n_bitrates; j++) {
 864                                 if (sband->bitrates[j].bitrate == rate)
 865                                         rates |= BIT(j);
 866                         }
 867                 }
 868                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 869         }
 870
 871         if (params->ht_capa)
 872                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
 873                                                   params->ht_capa,
 874                                                   &sta->sta.ht_cap);
 875
 876         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 877 #ifdef CONFIG_MAC80211_MESH
 878                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
 879                         switch (params->plink_state) {
 880                         case NL80211_PLINK_LISTEN:
 881                         case NL80211_PLINK_ESTAB:
 882                         case NL80211_PLINK_BLOCKED:
 883                                 sta->plink_state = params->plink_state;
 884                                 break;
 885                         default:
 886                                 /*  nothing  */
 887                                 break;
 888                         }
 889                 else
 890                         switch (params->plink_action) {
 891                         case PLINK_ACTION_OPEN:
 892                                 mesh_plink_open(sta);
 893                                 break;
 894                         case PLINK_ACTION_BLOCK:
 895                                 mesh_plink_block(sta);
 896                                 break;
 897                         }
 898 #endif
 899         }
 900
 901         return 0;
 902 }
 903
 904 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 905                                  u8 *mac, struct station_parameters *params)
 906 {
 907         struct ieee80211_local *local = wiphy_priv(wiphy);
 908         struct sta_info *sta;
 909         struct ieee80211_sub_if_data *sdata;
 910         int err;
 911         int layer2_update;
 912
 913         if (params->vlan) {
 914                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 915
 916                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 917                     sdata->vif.type != NL80211_IFTYPE_AP)
 918                         return -EINVAL;
 919         } else
 920                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 921
 922         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 923                 return -EINVAL;
 924
 925         if (is_multicast_ether_addr(mac))
 926                 return -EINVAL;
 927
 928         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 929         if (!sta)
 930                 return -ENOMEM;
 931
 932         sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
 933         sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
 934
 935         err = sta_apply_parameters(local, sta, params);
 936         if (err) {
 937                 sta_info_free(local, sta);
 938                 return err;
 939         }
 940
 941         /*
 942          * for TDLS, rate control should be initialized only when supported
 943          * rates are known.
 944          */
 945         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 946                 rate_control_rate_init(sta);
 947
 948         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 949                 sdata->vif.type == NL80211_IFTYPE_AP;
 950
 951         err = sta_info_insert_rcu(sta);
 952         if (err) {
 953                 rcu_read_unlock();
 954                 return err;
 955         }
 956
 957         if (layer2_update)
 958                 ieee80211_send_layer2_update(sta);
 959
 960         rcu_read_unlock();
 961
 962         return 0;
 963 }
 964
 965 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 966                                  u8 *mac)
 967 {
 968         struct ieee80211_local *local = wiphy_priv(wiphy);
 969         struct ieee80211_sub_if_data *sdata;
 970
 971         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 972
 973         if (mac)
 974                 return sta_info_destroy_addr_bss(sdata, mac);
 975
 976         sta_info_flush(local, sdata);
 977         return 0;
 978 }
 979
 980 static int ieee80211_change_station(struct wiphy *wiphy,
 981                                     struct net_device *dev,
 982                                     u8 *mac,
 983                                     struct station_parameters *params)
 984 {
 985         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 986         struct ieee80211_local *local = wiphy_priv(wiphy);
 987         struct sta_info *sta;
 988         struct ieee80211_sub_if_data *vlansdata;
 989         int err;
 990
 991         mutex_lock(&local->sta_mtx);
 992
 993         sta = sta_info_get_bss(sdata, mac);
 994         if (!sta) {
 995                 mutex_unlock(&local->sta_mtx);
 996                 return -ENOENT;
 997         }
 998
 999         /* in station mode, supported rates are only valid with TDLS */
1000         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1001             params->supported_rates &&
1002             !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1003                 mutex_unlock(&local->sta_mtx);
1004                 return -EINVAL;
1005         }
1006
1007         if (params->vlan && params->vlan != sta->sdata->dev) {
1008                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1009
1010                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1011                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
1012                         mutex_unlock(&local->sta_mtx);
1013                         return -EINVAL;
1014                 }
1015
1016                 if (params->vlan->ieee80211_ptr->use_4addr) {
1017                         if (vlansdata->u.vlan.sta) {
1018                                 mutex_unlock(&local->sta_mtx);
1019                                 return -EBUSY;
1020                         }
1021
1022                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1023                 }
1024
1025                 sta->sdata = vlansdata;
1026                 ieee80211_send_layer2_update(sta);
1027         }
1028
1029         err = sta_apply_parameters(local, sta, params);
1030         if (err) {
1031                 mutex_unlock(&local->sta_mtx);
1032                 return err;
1033         }
1034
1035         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1036                 rate_control_rate_init(sta);
1037
1038         mutex_unlock(&local->sta_mtx);
1039
1040         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1041             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
1042                 ieee80211_recalc_ps(local, -1);
1043
1044         return 0;
1045 }
1046
1047 #ifdef CONFIG_MAC80211_MESH
1048 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1049                                  u8 *dst, u8 *next_hop)
1050 {
1051         struct ieee80211_sub_if_data *sdata;
1052         struct mesh_path *mpath;
1053         struct sta_info *sta;
1054         int err;
1055
1056         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1057
1058         rcu_read_lock();
1059         sta = sta_info_get(sdata, next_hop);
1060         if (!sta) {
1061                 rcu_read_unlock();
1062                 return -ENOENT;
1063         }
1064
1065         err = mesh_path_add(dst, sdata);
1066         if (err) {
1067                 rcu_read_unlock();
1068                 return err;
1069         }
1070
1071         mpath = mesh_path_lookup(dst, sdata);
1072         if (!mpath) {
1073                 rcu_read_unlock();
1074                 return -ENXIO;
1075         }
1076         mesh_path_fix_nexthop(mpath, sta);
1077
1078         rcu_read_unlock();
1079         return 0;
1080 }
1081
1082 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1083                                  u8 *dst)
1084 {
1085         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1086
1087         if (dst)
1088                 return mesh_path_del(dst, sdata);
1089
1090         mesh_path_flush_by_iface(sdata);
1091         return 0;
1092 }
1093
1094 static int ieee80211_change_mpath(struct wiphy *wiphy,
1095                                     struct net_device *dev,
1096                                     u8 *dst, u8 *next_hop)
1097 {
1098         struct ieee80211_sub_if_data *sdata;
1099         struct mesh_path *mpath;
1100         struct sta_info *sta;
1101
1102         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1103
1104         rcu_read_lock();
1105
1106         sta = sta_info_get(sdata, next_hop);
1107         if (!sta) {
1108                 rcu_read_unlock();
1109                 return -ENOENT;
1110         }
1111
1112         mpath = mesh_path_lookup(dst, sdata);
1113         if (!mpath) {
1114                 rcu_read_unlock();
1115                 return -ENOENT;
1116         }
1117
1118         mesh_path_fix_nexthop(mpath, sta);
1119
1120         rcu_read_unlock();
1121         return 0;
1122 }
1123
1124 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1125                             struct mpath_info *pinfo)
1126 {
1127         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1128
1129         if (next_hop_sta)
1130                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1131         else
1132                 memset(next_hop, 0, ETH_ALEN);
1133
1134         pinfo->generation = mesh_paths_generation;
1135
1136         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1137                         MPATH_INFO_SN |
1138                         MPATH_INFO_METRIC |
1139                         MPATH_INFO_EXPTIME |
1140                         MPATH_INFO_DISCOVERY_TIMEOUT |
1141                         MPATH_INFO_DISCOVERY_RETRIES |
1142                         MPATH_INFO_FLAGS;
1143
1144         pinfo->frame_qlen = mpath->frame_queue.qlen;
1145         pinfo->sn = mpath->sn;
1146         pinfo->metric = mpath->metric;
1147         if (time_before(jiffies, mpath->exp_time))
1148                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1149         pinfo->discovery_timeout =
1150                         jiffies_to_msecs(mpath->discovery_timeout);
1151         pinfo->discovery_retries = mpath->discovery_retries;
1152         pinfo->flags = 0;
1153         if (mpath->flags & MESH_PATH_ACTIVE)
1154                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1155         if (mpath->flags & MESH_PATH_RESOLVING)
1156                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1157         if (mpath->flags & MESH_PATH_SN_VALID)
1158                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1159         if (mpath->flags & MESH_PATH_FIXED)
1160                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1161         if (mpath->flags & MESH_PATH_RESOLVING)
1162                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1163
1164         pinfo->flags = mpath->flags;
1165 }
1166
1167 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1168                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1169
1170 {
1171         struct ieee80211_sub_if_data *sdata;
1172         struct mesh_path *mpath;
1173
1174         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1175
1176         rcu_read_lock();
1177         mpath = mesh_path_lookup(dst, sdata);
1178         if (!mpath) {
1179                 rcu_read_unlock();
1180                 return -ENOENT;
1181         }
1182         memcpy(dst, mpath->dst, ETH_ALEN);
1183         mpath_set_pinfo(mpath, next_hop, pinfo);
1184         rcu_read_unlock();
1185         return 0;
1186 }
1187
1188 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1189                                  int idx, u8 *dst, u8 *next_hop,
1190                                  struct mpath_info *pinfo)
1191 {
1192         struct ieee80211_sub_if_data *sdata;
1193         struct mesh_path *mpath;
1194
1195         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1196
1197         rcu_read_lock();
1198         mpath = mesh_path_lookup_by_idx(idx, sdata);
1199         if (!mpath) {
1200                 rcu_read_unlock();
1201                 return -ENOENT;
1202         }
1203         memcpy(dst, mpath->dst, ETH_ALEN);
1204         mpath_set_pinfo(mpath, next_hop, pinfo);
1205         rcu_read_unlock();
1206         return 0;
1207 }
1208
1209 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1210                                 struct net_device *dev,
1211                                 struct mesh_config *conf)
1212 {
1213         struct ieee80211_sub_if_data *sdata;
1214         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1215
1216         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1217         return 0;
1218 }
1219
1220 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1221 {
1222         return (mask >> (parm-1)) & 0x1;
1223 }
1224
1225 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1226                 const struct mesh_setup *setup)
1227 {
1228         u8 *new_ie;
1229         const u8 *old_ie;
1230         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1231                                         struct ieee80211_sub_if_data, u.mesh);
1232
1233         /* allocate information elements */
1234         new_ie = NULL;
1235         old_ie = ifmsh->ie;
1236
1237         if (setup->ie_len) {
1238                 new_ie = kmemdup(setup->ie, setup->ie_len,
1239                                 GFP_KERNEL);
1240                 if (!new_ie)
1241                         return -ENOMEM;
1242         }
1243         ifmsh->ie_len = setup->ie_len;
1244         ifmsh->ie = new_ie;
1245         kfree(old_ie);
1246
1247         /* now copy the rest of the setup parameters */
1248         ifmsh->mesh_id_len = setup->mesh_id_len;
1249         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1250         ifmsh->mesh_sp_id = setup->sync_method;
1251         ifmsh->mesh_pp_id = setup->path_sel_proto;
1252         ifmsh->mesh_pm_id = setup->path_metric;
1253         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1254         if (setup->is_authenticated)
1255                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1256         if (setup->is_secure)
1257                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1258
1259         /* mcast rate setting in Mesh Node */
1260         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1261                                                 sizeof(setup->mcast_rate));
1262
1263         return 0;
1264 }
1265
1266 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1267                                         struct net_device *dev, u32 mask,
1268                                         const struct mesh_config *nconf)
1269 {
1270         struct mesh_config *conf;
1271         struct ieee80211_sub_if_data *sdata;
1272         struct ieee80211_if_mesh *ifmsh;
1273
1274         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1275         ifmsh = &sdata->u.mesh;
1276
1277         /* Set the config options which we are interested in setting */
1278         conf = &(sdata->u.mesh.mshcfg);
1279         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1280                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1281         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1282                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1283         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1284                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1285         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1286                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1287         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1288                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1289         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1290                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1291         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1292                 conf->dot11MeshTTL = nconf->element_ttl;
1293         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1294                 conf->auto_open_plinks = nconf->auto_open_plinks;
1295         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1296                 conf->dot11MeshNbrOffsetMaxNeighbor =
1297                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1298         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1299                 conf->dot11MeshHWMPmaxPREQretries =
1300                         nconf->dot11MeshHWMPmaxPREQretries;
1301         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1302                 conf->path_refresh_time = nconf->path_refresh_time;
1303         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1304                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1305         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1306                 conf->dot11MeshHWMPactivePathTimeout =
1307                         nconf->dot11MeshHWMPactivePathTimeout;
1308         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1309                 conf->dot11MeshHWMPpreqMinInterval =
1310                         nconf->dot11MeshHWMPpreqMinInterval;
1311         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1312                 conf->dot11MeshHWMPperrMinInterval =
1313                         nconf->dot11MeshHWMPperrMinInterval;
1314         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1315                            mask))
1316                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1317                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1318         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1319                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1320                 ieee80211_mesh_root_setup(ifmsh);
1321         }
1322         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1323                 /* our current gate announcement implementation rides on root
1324                  * announcements, so require this ifmsh to also be a root node
1325                  * */
1326                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1327                     !conf->dot11MeshHWMPRootMode) {
1328                         conf->dot11MeshHWMPRootMode = 1;
1329                         ieee80211_mesh_root_setup(ifmsh);
1330                 }
1331                 conf->dot11MeshGateAnnouncementProtocol =
1332                         nconf->dot11MeshGateAnnouncementProtocol;
1333         }
1334         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
1335                 conf->dot11MeshHWMPRannInterval =
1336                         nconf->dot11MeshHWMPRannInterval;
1337         }
1338         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1339                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1340         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1341                 /* our RSSI threshold implementation is supported only for
1342                  * devices that report signal in dBm.
1343                  */
1344                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1345                         return -ENOTSUPP;
1346                 conf->rssi_threshold = nconf->rssi_threshold;
1347         }
1348         return 0;
1349 }
1350
1351 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1352                                const struct mesh_config *conf,
1353                                const struct mesh_setup *setup)
1354 {
1355         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1356         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1357         int err;
1358
1359         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1360         err = copy_mesh_setup(ifmsh, setup);
1361         if (err)
1362                 return err;
1363         ieee80211_start_mesh(sdata);
1364
1365         return 0;
1366 }
1367
1368 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1369 {
1370         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1371
1372         ieee80211_stop_mesh(sdata);
1373
1374         return 0;
1375 }
1376 #endif
1377
1378 static int ieee80211_change_bss(struct wiphy *wiphy,
1379                                 struct net_device *dev,
1380                                 struct bss_parameters *params)
1381 {
1382         struct ieee80211_sub_if_data *sdata;
1383         u32 changed = 0;
1384
1385         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1386
1387         if (params->use_cts_prot >= 0) {
1388                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1389                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1390         }
1391         if (params->use_short_preamble >= 0) {
1392                 sdata->vif.bss_conf.use_short_preamble =
1393                         params->use_short_preamble;
1394                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1395         }
1396
1397         if (!sdata->vif.bss_conf.use_short_slot &&
1398             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1399                 sdata->vif.bss_conf.use_short_slot = true;
1400                 changed |= BSS_CHANGED_ERP_SLOT;
1401         }
1402
1403         if (params->use_short_slot_time >= 0) {
1404                 sdata->vif.bss_conf.use_short_slot =
1405                         params->use_short_slot_time;
1406                 changed |= BSS_CHANGED_ERP_SLOT;
1407         }
1408
1409         if (params->basic_rates) {
1410                 int i, j;
1411                 u32 rates = 0;
1412                 struct ieee80211_local *local = wiphy_priv(wiphy);
1413                 struct ieee80211_supported_band *sband =
1414                         wiphy->bands[local->oper_channel->band];
1415
1416                 for (i = 0; i < params->basic_rates_len; i++) {
1417                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1418                         for (j = 0; j < sband->n_bitrates; j++) {
1419                                 if (sband->bitrates[j].bitrate == rate)
1420                                         rates |= BIT(j);
1421                         }
1422                 }
1423                 sdata->vif.bss_conf.basic_rates = rates;
1424                 changed |= BSS_CHANGED_BASIC_RATES;
1425         }
1426
1427         if (params->ap_isolate >= 0) {
1428                 if (params->ap_isolate)
1429                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1430                 else
1431                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1432         }
1433
1434         if (params->ht_opmode >= 0) {
1435                 sdata->vif.bss_conf.ht_operation_mode =
1436                         (u16) params->ht_opmode;
1437                 changed |= BSS_CHANGED_HT;
1438         }
1439
1440         ieee80211_bss_info_change_notify(sdata, changed);
1441
1442         return 0;
1443 }
1444
1445 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1446                                     struct net_device *dev,
1447                                     struct ieee80211_txq_params *params)
1448 {
1449         struct ieee80211_local *local = wiphy_priv(wiphy);
1450         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1451         struct ieee80211_tx_queue_params p;
1452
1453         if (!local->ops->conf_tx)
1454                 return -EOPNOTSUPP;
1455
1456         if (local->hw.queues < IEEE80211_NUM_ACS)
1457                 return -EOPNOTSUPP;
1458
1459         memset(&p, 0, sizeof(p));
1460         p.aifs = params->aifs;
1461         p.cw_max = params->cwmax;
1462         p.cw_min = params->cwmin;
1463         p.txop = params->txop;
1464
1465         /*
1466          * Setting tx queue params disables u-apsd because it's only
1467          * called in master mode.
1468          */
1469         p.uapsd = false;
1470
1471         sdata->tx_conf[params->ac] = p;
1472         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1473                 wiphy_debug(local->hw.wiphy,
1474                             "failed to set TX queue parameters for AC %d\n",
1475                             params->ac);
1476                 return -EINVAL;
1477         }
1478
1479         return 0;
1480 }
1481
1482 static int ieee80211_set_channel(struct wiphy *wiphy,
1483                                  struct net_device *netdev,
1484                                  struct ieee80211_channel *chan,
1485                                  enum nl80211_channel_type channel_type)
1486 {
1487         struct ieee80211_local *local = wiphy_priv(wiphy);
1488         struct ieee80211_sub_if_data *sdata = NULL;
1489         struct ieee80211_channel *old_oper;
1490         enum nl80211_channel_type old_oper_type;
1491         enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1492
1493         if (netdev)
1494                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1495
1496         switch (ieee80211_get_channel_mode(local, NULL)) {
1497         case CHAN_MODE_HOPPING:
1498                 return -EBUSY;
1499         case CHAN_MODE_FIXED:
1500                 if (local->oper_channel != chan)
1501                         return -EBUSY;
1502                 if (!sdata && local->_oper_channel_type == channel_type)
1503                         return 0;
1504                 break;
1505         case CHAN_MODE_UNDEFINED:
1506                 break;
1507         }
1508
1509         if (sdata)
1510                 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1511         old_oper_type = local->_oper_channel_type;
1512
1513         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1514                 return -EBUSY;
1515
1516         old_oper = local->oper_channel;
1517         local->oper_channel = chan;
1518
1519         /* Update driver if changes were actually made. */
1520         if ((old_oper != local->oper_channel) ||
1521             (old_oper_type != local->_oper_channel_type))
1522                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1523
1524         if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1525             old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1526                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1527
1528         return 0;
1529 }
1530
1531 #ifdef CONFIG_PM
1532 static int ieee80211_suspend(struct wiphy *wiphy,
1533                              struct cfg80211_wowlan *wowlan)
1534 {
1535         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1536 }
1537
1538 static int ieee80211_resume(struct wiphy *wiphy)
1539 {
1540         return __ieee80211_resume(wiphy_priv(wiphy));
1541 }
1542 #else
1543 #define ieee80211_suspend NULL
1544 #define ieee80211_resume NULL
1545 #endif
1546
1547 static int ieee80211_scan(struct wiphy *wiphy,
1548                           struct net_device *dev,
1549                           struct cfg80211_scan_request *req)
1550 {
1551         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1552
1553         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1554         case NL80211_IFTYPE_STATION:
1555         case NL80211_IFTYPE_ADHOC:
1556         case NL80211_IFTYPE_MESH_POINT:
1557         case NL80211_IFTYPE_P2P_CLIENT:
1558                 break;
1559         case NL80211_IFTYPE_P2P_GO:
1560                 if (sdata->local->ops->hw_scan)
1561                         break;
1562                 /*
1563                  * FIXME: implement NoA while scanning in software,
1564                  * for now fall through to allow scanning only when
1565                  * beaconing hasn't been configured yet
1566                  */
1567         case NL80211_IFTYPE_AP:
1568                 if (sdata->u.ap.beacon)
1569                         return -EOPNOTSUPP;
1570                 break;
1571         default:
1572                 return -EOPNOTSUPP;
1573         }
1574
1575         return ieee80211_request_scan(sdata, req);
1576 }
1577
1578 static int
1579 ieee80211_sched_scan_start(struct wiphy *wiphy,
1580                            struct net_device *dev,
1581                            struct cfg80211_sched_scan_request *req)
1582 {
1583         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1584
1585         if (!sdata->local->ops->sched_scan_start)
1586                 return -EOPNOTSUPP;
1587
1588         return ieee80211_request_sched_scan_start(sdata, req);
1589 }
1590
1591 static int
1592 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1593 {
1594         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1595
1596         if (!sdata->local->ops->sched_scan_stop)
1597                 return -EOPNOTSUPP;
1598
1599         return ieee80211_request_sched_scan_stop(sdata);
1600 }
1601
1602 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1603                           struct cfg80211_auth_request *req)
1604 {
1605         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1606 }
1607
1608 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1609                            struct cfg80211_assoc_request *req)
1610 {
1611         struct ieee80211_local *local = wiphy_priv(wiphy);
1612         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1613
1614         switch (ieee80211_get_channel_mode(local, sdata)) {
1615         case CHAN_MODE_HOPPING:
1616                 return -EBUSY;
1617         case CHAN_MODE_FIXED:
1618                 if (local->oper_channel == req->bss->channel)
1619                         break;
1620                 return -EBUSY;
1621         case CHAN_MODE_UNDEFINED:
1622                 break;
1623         }
1624
1625         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1626 }
1627
1628 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1629                             struct cfg80211_deauth_request *req)
1630 {
1631         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1632 }
1633
1634 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1635                               struct cfg80211_disassoc_request *req)
1636 {
1637         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
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_vif *vif = &sdata->vif;
1872         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1873
1874         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1875             rssi_hyst == bss_conf->cqm_rssi_hyst)
1876                 return 0;
1877
1878         bss_conf->cqm_rssi_thold = rssi_thold;
1879         bss_conf->cqm_rssi_hyst = rssi_hyst;
1880
1881         /* tell the driver upon association, unless already associated */
1882         if (sdata->u.mgd.associated &&
1883             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
1884                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1885
1886         return 0;
1887 }
1888
1889 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1890                                       struct net_device *dev,
1891                                       const u8 *addr,
1892                                       const struct cfg80211_bitrate_mask *mask)
1893 {
1894         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1895         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1896         int i, ret;
1897
1898         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1899                 ret = drv_set_bitrate_mask(local, sdata, mask);
1900                 if (ret)
1901                         return ret;
1902         }
1903
1904         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
1905                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1906                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
1907                        sizeof(mask->control[i].mcs));
1908         }
1909
1910         return 0;
1911 }
1912
1913 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1914                                           struct net_device *dev,
1915                                           struct ieee80211_channel *chan,
1916                                           enum nl80211_channel_type chantype,
1917                                           unsigned int duration, u64 *cookie)
1918 {
1919         int ret;
1920         u32 random_cookie;
1921
1922         lockdep_assert_held(&local->mtx);
1923
1924         if (local->hw_roc_cookie)
1925                 return -EBUSY;
1926         /* must be nonzero */
1927         random_cookie = random32() | 1;
1928
1929         *cookie = random_cookie;
1930         local->hw_roc_dev = dev;
1931         local->hw_roc_cookie = random_cookie;
1932         local->hw_roc_channel = chan;
1933         local->hw_roc_channel_type = chantype;
1934         local->hw_roc_duration = duration;
1935         ret = drv_remain_on_channel(local, chan, chantype, duration);
1936         if (ret) {
1937                 local->hw_roc_channel = NULL;
1938                 local->hw_roc_cookie = 0;
1939         }
1940
1941         return ret;
1942 }
1943
1944 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1945                                        struct net_device *dev,
1946                                        struct ieee80211_channel *chan,
1947                                        enum nl80211_channel_type channel_type,
1948                                        unsigned int duration,
1949                                        u64 *cookie)
1950 {
1951         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1952         struct ieee80211_local *local = sdata->local;
1953
1954         if (local->ops->remain_on_channel) {
1955                 int ret;
1956
1957                 mutex_lock(&local->mtx);
1958                 ret = ieee80211_remain_on_channel_hw(local, dev,
1959                                                      chan, channel_type,
1960                                                      duration, cookie);
1961                 local->hw_roc_for_tx = false;
1962                 mutex_unlock(&local->mtx);
1963
1964                 return ret;
1965         }
1966
1967         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1968                                               duration, cookie);
1969 }
1970
1971 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1972                                                  u64 cookie)
1973 {
1974         int ret;
1975
1976         lockdep_assert_held(&local->mtx);
1977
1978         if (local->hw_roc_cookie != cookie)
1979                 return -ENOENT;
1980
1981         ret = drv_cancel_remain_on_channel(local);
1982         if (ret)
1983                 return ret;
1984
1985         local->hw_roc_cookie = 0;
1986         local->hw_roc_channel = NULL;
1987
1988         ieee80211_recalc_idle(local);
1989
1990         return 0;
1991 }
1992
1993 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1994                                               struct net_device *dev,
1995                                               u64 cookie)
1996 {
1997         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1998         struct ieee80211_local *local = sdata->local;
1999
2000         if (local->ops->cancel_remain_on_channel) {
2001                 int ret;
2002
2003                 mutex_lock(&local->mtx);
2004                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2005                 mutex_unlock(&local->mtx);
2006
2007                 return ret;
2008         }
2009
2010         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
2011 }
2012
2013 static enum work_done_result
2014 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
2015 {
2016         /*
2017          * Use the data embedded in the work struct for reporting
2018          * here so if the driver mangled the SKB before dropping
2019          * it (which is the only way we really should get here)
2020          * then we don't report mangled data.
2021          *
2022          * If there was no wait time, then by the time we get here
2023          * the driver will likely not have reported the status yet,
2024          * so in that case userspace will have to deal with it.
2025          */
2026
2027         if (wk->offchan_tx.wait && !wk->offchan_tx.status)
2028                 cfg80211_mgmt_tx_status(wk->sdata->dev,
2029                                         (unsigned long) wk->offchan_tx.frame,
2030                                         wk->data, wk->data_len, false, GFP_KERNEL);
2031
2032         return WORK_DONE_DESTROY;
2033 }
2034
2035 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
2036                              struct ieee80211_channel *chan, bool offchan,
2037                              enum nl80211_channel_type channel_type,
2038                              bool channel_type_valid, unsigned int wait,
2039                              const u8 *buf, size_t len, bool no_cck,
2040                              bool dont_wait_for_ack, u64 *cookie)
2041 {
2042         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2043         struct ieee80211_local *local = sdata->local;
2044         struct sk_buff *skb;
2045         struct sta_info *sta;
2046         struct ieee80211_work *wk;
2047         const struct ieee80211_mgmt *mgmt = (void *)buf;
2048         u32 flags;
2049         bool is_offchan = false;
2050
2051         if (dont_wait_for_ack)
2052                 flags = IEEE80211_TX_CTL_NO_ACK;
2053         else
2054                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2055                         IEEE80211_TX_CTL_REQ_TX_STATUS;
2056
2057         /* Check that we are on the requested channel for transmission */
2058         if (chan != local->tmp_channel &&
2059             chan != local->oper_channel)
2060                 is_offchan = true;
2061         if (channel_type_valid &&
2062             (channel_type != local->tmp_channel_type &&
2063              channel_type != local->_oper_channel_type))
2064                 is_offchan = true;
2065
2066         if (chan == local->hw_roc_channel) {
2067                 /* TODO: check channel type? */
2068                 is_offchan = false;
2069                 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2070         }
2071
2072         if (no_cck)
2073                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2074
2075         if (is_offchan && !offchan)
2076                 return -EBUSY;
2077
2078         switch (sdata->vif.type) {
2079         case NL80211_IFTYPE_ADHOC:
2080         case NL80211_IFTYPE_AP:
2081         case NL80211_IFTYPE_AP_VLAN:
2082         case NL80211_IFTYPE_P2P_GO:
2083         case NL80211_IFTYPE_MESH_POINT:
2084                 if (!ieee80211_is_action(mgmt->frame_control) ||
2085                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2086                         break;
2087                 rcu_read_lock();
2088                 sta = sta_info_get(sdata, mgmt->da);
2089                 rcu_read_unlock();
2090                 if (!sta)
2091                         return -ENOLINK;
2092                 break;
2093         case NL80211_IFTYPE_STATION:
2094         case NL80211_IFTYPE_P2P_CLIENT:
2095                 break;
2096         default:
2097                 return -EOPNOTSUPP;
2098         }
2099
2100         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2101         if (!skb)
2102                 return -ENOMEM;
2103         skb_reserve(skb, local->hw.extra_tx_headroom);
2104
2105         memcpy(skb_put(skb, len), buf, len);
2106
2107         IEEE80211_SKB_CB(skb)->flags = flags;
2108
2109         if (flags & IEEE80211_TX_CTL_TX_OFFCHAN)
2110                 IEEE80211_SKB_CB(skb)->hw_queue =
2111                         local->hw.offchannel_tx_hw_queue;
2112
2113         skb->dev = sdata->dev;
2114
2115         *cookie = (unsigned long) skb;
2116
2117         if (is_offchan && local->ops->remain_on_channel) {
2118                 unsigned int duration;
2119                 int ret;
2120
2121                 mutex_lock(&local->mtx);
2122                 /*
2123                  * If the duration is zero, then the driver
2124                  * wouldn't actually do anything. Set it to
2125                  * 100 for now.
2126                  *
2127                  * TODO: cancel the off-channel operation
2128                  *       when we get the SKB's TX status and
2129                  *       the wait time was zero before.
2130                  */
2131                 duration = 100;
2132                 if (wait)
2133                         duration = wait;
2134                 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
2135                                                      channel_type,
2136                                                      duration, cookie);
2137                 if (ret) {
2138                         kfree_skb(skb);
2139                         mutex_unlock(&local->mtx);
2140                         return ret;
2141                 }
2142
2143                 local->hw_roc_for_tx = true;
2144                 local->hw_roc_duration = wait;
2145
2146                 /*
2147                  * queue up frame for transmission after
2148                  * ieee80211_ready_on_channel call
2149                  */
2150
2151                 /* modify cookie to prevent API mismatches */
2152                 *cookie ^= 2;
2153                 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2154                 IEEE80211_SKB_CB(skb)->hw_queue =
2155                         local->hw.offchannel_tx_hw_queue;
2156                 local->hw_roc_skb = skb;
2157                 local->hw_roc_skb_for_status = skb;
2158                 mutex_unlock(&local->mtx);
2159
2160                 return 0;
2161         }
2162
2163         /*
2164          * Can transmit right away if the channel was the
2165          * right one and there's no wait involved... If a
2166          * wait is involved, we might otherwise not be on
2167          * the right channel for long enough!
2168          */
2169         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
2170                 ieee80211_tx_skb(sdata, skb);
2171                 return 0;
2172         }
2173
2174         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
2175         if (!wk) {
2176                 kfree_skb(skb);
2177                 return -ENOMEM;
2178         }
2179
2180         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
2181         wk->chan = chan;
2182         wk->chan_type = channel_type;
2183         wk->sdata = sdata;
2184         wk->done = ieee80211_offchan_tx_done;
2185         wk->offchan_tx.frame = skb;
2186         wk->offchan_tx.wait = wait;
2187         wk->data_len = len;
2188         memcpy(wk->data, buf, len);
2189
2190         ieee80211_add_work(wk);
2191         return 0;
2192 }
2193
2194 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2195                                          struct net_device *dev,
2196                                          u64 cookie)
2197 {
2198         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2199         struct ieee80211_local *local = sdata->local;
2200         struct ieee80211_work *wk;
2201         int ret = -ENOENT;
2202
2203         mutex_lock(&local->mtx);
2204
2205         if (local->ops->cancel_remain_on_channel) {
2206                 cookie ^= 2;
2207                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2208
2209                 if (ret == 0) {
2210                         kfree_skb(local->hw_roc_skb);
2211                         local->hw_roc_skb = NULL;
2212                         local->hw_roc_skb_for_status = NULL;
2213                 }
2214
2215                 mutex_unlock(&local->mtx);
2216
2217                 return ret;
2218         }
2219
2220         list_for_each_entry(wk, &local->work_list, list) {
2221                 if (wk->sdata != sdata)
2222                         continue;
2223
2224                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2225                         continue;
2226
2227                 if (cookie != (unsigned long) wk->offchan_tx.frame)
2228                         continue;
2229
2230                 wk->timeout = jiffies;
2231
2232                 ieee80211_queue_work(&local->hw, &local->work_work);
2233                 ret = 0;
2234                 break;
2235         }
2236         mutex_unlock(&local->mtx);
2237
2238         return ret;
2239 }
2240
2241 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2242                                           struct net_device *dev,
2243                                           u16 frame_type, bool reg)
2244 {
2245         struct ieee80211_local *local = wiphy_priv(wiphy);
2246
2247         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2248                 return;
2249
2250         if (reg)
2251                 local->probe_req_reg++;
2252         else
2253                 local->probe_req_reg--;
2254
2255         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2256 }
2257
2258 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2259 {
2260         struct ieee80211_local *local = wiphy_priv(wiphy);
2261
2262         if (local->started)
2263                 return -EOPNOTSUPP;
2264
2265         return drv_set_antenna(local, tx_ant, rx_ant);
2266 }
2267
2268 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2269 {
2270         struct ieee80211_local *local = wiphy_priv(wiphy);
2271
2272         return drv_get_antenna(local, tx_ant, rx_ant);
2273 }
2274
2275 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2276 {
2277         struct ieee80211_local *local = wiphy_priv(wiphy);
2278
2279         return drv_set_ringparam(local, tx, rx);
2280 }
2281
2282 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2283                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2284 {
2285         struct ieee80211_local *local = wiphy_priv(wiphy);
2286
2287         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2288 }
2289
2290 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2291                                     struct net_device *dev,
2292                                     struct cfg80211_gtk_rekey_data *data)
2293 {
2294         struct ieee80211_local *local = wiphy_priv(wiphy);
2295         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2296
2297         if (!local->ops->set_rekey_data)
2298                 return -EOPNOTSUPP;
2299
2300         drv_set_rekey_data(local, sdata, data);
2301
2302         return 0;
2303 }
2304
2305 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2306 {
2307         u8 *pos = (void *)skb_put(skb, 7);
2308
2309         *pos++ = WLAN_EID_EXT_CAPABILITY;
2310         *pos++ = 5; /* len */
2311         *pos++ = 0x0;
2312         *pos++ = 0x0;
2313         *pos++ = 0x0;
2314         *pos++ = 0x0;
2315         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2316 }
2317
2318 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2319 {
2320         struct ieee80211_local *local = sdata->local;
2321         u16 capab;
2322
2323         capab = 0;
2324         if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2325                 return capab;
2326
2327         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2328                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2329         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2330                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2331
2332         return capab;
2333 }
2334
2335 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2336                                        u8 *peer, u8 *bssid)
2337 {
2338         struct ieee80211_tdls_lnkie *lnkid;
2339
2340         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2341
2342         lnkid->ie_type = WLAN_EID_LINK_ID;
2343         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2344
2345         memcpy(lnkid->bssid, bssid, ETH_ALEN);
2346         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2347         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2348 }
2349
2350 static int
2351 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2352                                u8 *peer, u8 action_code, u8 dialog_token,
2353                                u16 status_code, struct sk_buff *skb)
2354 {
2355         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2356         struct ieee80211_tdls_data *tf;
2357
2358         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2359
2360         memcpy(tf->da, peer, ETH_ALEN);
2361         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2362         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2363         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2364
2365         switch (action_code) {
2366         case WLAN_TDLS_SETUP_REQUEST:
2367                 tf->category = WLAN_CATEGORY_TDLS;
2368                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2369
2370                 skb_put(skb, sizeof(tf->u.setup_req));
2371                 tf->u.setup_req.dialog_token = dialog_token;
2372                 tf->u.setup_req.capability =
2373                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2374
2375                 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2376                 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2377                 ieee80211_tdls_add_ext_capab(skb);
2378                 break;
2379         case WLAN_TDLS_SETUP_RESPONSE:
2380                 tf->category = WLAN_CATEGORY_TDLS;
2381                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2382
2383                 skb_put(skb, sizeof(tf->u.setup_resp));
2384                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2385                 tf->u.setup_resp.dialog_token = dialog_token;
2386                 tf->u.setup_resp.capability =
2387                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2388
2389                 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2390                 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2391                 ieee80211_tdls_add_ext_capab(skb);
2392                 break;
2393         case WLAN_TDLS_SETUP_CONFIRM:
2394                 tf->category = WLAN_CATEGORY_TDLS;
2395                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2396
2397                 skb_put(skb, sizeof(tf->u.setup_cfm));
2398                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2399                 tf->u.setup_cfm.dialog_token = dialog_token;
2400                 break;
2401         case WLAN_TDLS_TEARDOWN:
2402                 tf->category = WLAN_CATEGORY_TDLS;
2403                 tf->action_code = WLAN_TDLS_TEARDOWN;
2404
2405                 skb_put(skb, sizeof(tf->u.teardown));
2406                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2407                 break;
2408         case WLAN_TDLS_DISCOVERY_REQUEST:
2409                 tf->category = WLAN_CATEGORY_TDLS;
2410                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2411
2412                 skb_put(skb, sizeof(tf->u.discover_req));
2413                 tf->u.discover_req.dialog_token = dialog_token;
2414                 break;
2415         default:
2416                 return -EINVAL;
2417         }
2418
2419         return 0;
2420 }
2421
2422 static int
2423 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2424                            u8 *peer, u8 action_code, u8 dialog_token,
2425                            u16 status_code, struct sk_buff *skb)
2426 {
2427         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2428         struct ieee80211_mgmt *mgmt;
2429
2430         mgmt = (void *)skb_put(skb, 24);
2431         memset(mgmt, 0, 24);
2432         memcpy(mgmt->da, peer, ETH_ALEN);
2433         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2434         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2435
2436         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2437                                           IEEE80211_STYPE_ACTION);
2438
2439         switch (action_code) {
2440         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2441                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2442                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2443                 mgmt->u.action.u.tdls_discover_resp.action_code =
2444                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2445                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2446                         dialog_token;
2447                 mgmt->u.action.u.tdls_discover_resp.capability =
2448                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2449
2450                 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2451                 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2452                 ieee80211_tdls_add_ext_capab(skb);
2453                 break;
2454         default:
2455                 return -EINVAL;
2456         }
2457
2458         return 0;
2459 }
2460
2461 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2462                                u8 *peer, u8 action_code, u8 dialog_token,
2463                                u16 status_code, const u8 *extra_ies,
2464                                size_t extra_ies_len)
2465 {
2466         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2467         struct ieee80211_local *local = sdata->local;
2468         struct ieee80211_tx_info *info;
2469         struct sk_buff *skb = NULL;
2470         bool send_direct;
2471         int ret;
2472
2473         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2474                 return -ENOTSUPP;
2475
2476         /* make sure we are in managed mode, and associated */
2477         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2478             !sdata->u.mgd.associated)
2479                 return -EINVAL;
2480
2481 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2482         printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer);
2483 #endif
2484
2485         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2486                             max(sizeof(struct ieee80211_mgmt),
2487                                 sizeof(struct ieee80211_tdls_data)) +
2488                             50 + /* supported rates */
2489                             7 + /* ext capab */
2490                             extra_ies_len +
2491                             sizeof(struct ieee80211_tdls_lnkie));
2492         if (!skb)
2493                 return -ENOMEM;
2494
2495         info = IEEE80211_SKB_CB(skb);
2496         skb_reserve(skb, local->hw.extra_tx_headroom);
2497
2498         switch (action_code) {
2499         case WLAN_TDLS_SETUP_REQUEST:
2500         case WLAN_TDLS_SETUP_RESPONSE:
2501         case WLAN_TDLS_SETUP_CONFIRM:
2502         case WLAN_TDLS_TEARDOWN:
2503         case WLAN_TDLS_DISCOVERY_REQUEST:
2504                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2505                                                      action_code, dialog_token,
2506                                                      status_code, skb);
2507                 send_direct = false;
2508                 break;
2509         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2510                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2511                                                  dialog_token, status_code,
2512                                                  skb);
2513                 send_direct = true;
2514                 break;
2515         default:
2516                 ret = -ENOTSUPP;
2517                 break;
2518         }
2519
2520         if (ret < 0)
2521                 goto fail;
2522
2523         if (extra_ies_len)
2524                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2525
2526         /* the TDLS link IE is always added last */
2527         switch (action_code) {
2528         case WLAN_TDLS_SETUP_REQUEST:
2529         case WLAN_TDLS_SETUP_CONFIRM:
2530         case WLAN_TDLS_TEARDOWN:
2531         case WLAN_TDLS_DISCOVERY_REQUEST:
2532                 /* we are the initiator */
2533                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2534                                            sdata->u.mgd.bssid);
2535                 break;
2536         case WLAN_TDLS_SETUP_RESPONSE:
2537         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2538                 /* we are the responder */
2539                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2540                                            sdata->u.mgd.bssid);
2541                 break;
2542         default:
2543                 ret = -ENOTSUPP;
2544                 goto fail;
2545         }
2546
2547         if (send_direct) {
2548                 ieee80211_tx_skb(sdata, skb);
2549                 return 0;
2550         }
2551
2552         /*
2553          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2554          * we should default to AC_VI.
2555          */
2556         switch (action_code) {
2557         case WLAN_TDLS_SETUP_REQUEST:
2558         case WLAN_TDLS_SETUP_RESPONSE:
2559                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2560                 skb->priority = 2;
2561                 break;
2562         default:
2563                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2564                 skb->priority = 5;
2565                 break;
2566         }
2567
2568         /* disable bottom halves when entering the Tx path */
2569         local_bh_disable();
2570         ret = ieee80211_subif_start_xmit(skb, dev);
2571         local_bh_enable();
2572
2573         return ret;
2574
2575 fail:
2576         dev_kfree_skb(skb);
2577         return ret;
2578 }
2579
2580 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2581                                u8 *peer, enum nl80211_tdls_operation oper)
2582 {
2583         struct sta_info *sta;
2584         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2585
2586         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2587                 return -ENOTSUPP;
2588
2589         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2590                 return -EINVAL;
2591
2592 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2593         printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer);
2594 #endif
2595
2596         switch (oper) {
2597         case NL80211_TDLS_ENABLE_LINK:
2598                 rcu_read_lock();
2599                 sta = sta_info_get(sdata, peer);
2600                 if (!sta) {
2601                         rcu_read_unlock();
2602                         return -ENOLINK;
2603                 }
2604
2605                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2606                 rcu_read_unlock();
2607                 break;
2608         case NL80211_TDLS_DISABLE_LINK:
2609                 return sta_info_destroy_addr(sdata, peer);
2610         case NL80211_TDLS_TEARDOWN:
2611         case NL80211_TDLS_SETUP:
2612         case NL80211_TDLS_DISCOVERY_REQ:
2613                 /* We don't support in-driver setup/teardown/discovery */
2614                 return -ENOTSUPP;
2615         default:
2616                 return -ENOTSUPP;
2617         }
2618
2619         return 0;
2620 }
2621
2622 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2623                                   const u8 *peer, u64 *cookie)
2624 {
2625         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2626         struct ieee80211_local *local = sdata->local;
2627         struct ieee80211_qos_hdr *nullfunc;
2628         struct sk_buff *skb;
2629         int size = sizeof(*nullfunc);
2630         __le16 fc;
2631         bool qos;
2632         struct ieee80211_tx_info *info;
2633         struct sta_info *sta;
2634
2635         rcu_read_lock();
2636         sta = sta_info_get(sdata, peer);
2637         if (sta) {
2638                 qos = test_sta_flag(sta, WLAN_STA_WME);
2639                 rcu_read_unlock();
2640         } else {
2641                 rcu_read_unlock();
2642                 return -ENOLINK;
2643         }
2644
2645         if (qos) {
2646                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2647                                  IEEE80211_STYPE_QOS_NULLFUNC |
2648                                  IEEE80211_FCTL_FROMDS);
2649         } else {
2650                 size -= 2;
2651                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2652                                  IEEE80211_STYPE_NULLFUNC |
2653                                  IEEE80211_FCTL_FROMDS);
2654         }
2655
2656         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
2657         if (!skb)
2658                 return -ENOMEM;
2659
2660         skb->dev = dev;
2661
2662         skb_reserve(skb, local->hw.extra_tx_headroom);
2663
2664         nullfunc = (void *) skb_put(skb, size);
2665         nullfunc->frame_control = fc;
2666         nullfunc->duration_id = 0;
2667         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
2668         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
2669         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
2670         nullfunc->seq_ctrl = 0;
2671
2672         info = IEEE80211_SKB_CB(skb);
2673
2674         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
2675                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
2676
2677         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
2678         skb->priority = 7;
2679         if (qos)
2680                 nullfunc->qos_ctrl = cpu_to_le16(7);
2681
2682         local_bh_disable();
2683         ieee80211_xmit(sdata, skb);
2684         local_bh_enable();
2685
2686         *cookie = (unsigned long) skb;
2687         return 0;
2688 }
2689
2690 static struct ieee80211_channel *
2691 ieee80211_wiphy_get_channel(struct wiphy *wiphy)
2692 {
2693         struct ieee80211_local *local = wiphy_priv(wiphy);
2694
2695         return local->oper_channel;
2696 }
2697
2698 #ifdef CONFIG_PM
2699 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
2700 {
2701         drv_set_wakeup(wiphy_priv(wiphy), enabled);
2702 }
2703 #endif
2704
2705 struct cfg80211_ops mac80211_config_ops = {
2706         .add_virtual_intf = ieee80211_add_iface,
2707         .del_virtual_intf = ieee80211_del_iface,
2708         .change_virtual_intf = ieee80211_change_iface,
2709         .add_key = ieee80211_add_key,
2710         .del_key = ieee80211_del_key,
2711         .get_key = ieee80211_get_key,
2712         .set_default_key = ieee80211_config_default_key,
2713         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2714         .start_ap = ieee80211_start_ap,
2715         .change_beacon = ieee80211_change_beacon,
2716         .stop_ap = ieee80211_stop_ap,
2717         .add_station = ieee80211_add_station,
2718         .del_station = ieee80211_del_station,
2719         .change_station = ieee80211_change_station,
2720         .get_station = ieee80211_get_station,
2721         .dump_station = ieee80211_dump_station,
2722         .dump_survey = ieee80211_dump_survey,
2723 #ifdef CONFIG_MAC80211_MESH
2724         .add_mpath = ieee80211_add_mpath,
2725         .del_mpath = ieee80211_del_mpath,
2726         .change_mpath = ieee80211_change_mpath,
2727         .get_mpath = ieee80211_get_mpath,
2728         .dump_mpath = ieee80211_dump_mpath,
2729         .update_mesh_config = ieee80211_update_mesh_config,
2730         .get_mesh_config = ieee80211_get_mesh_config,
2731         .join_mesh = ieee80211_join_mesh,
2732         .leave_mesh = ieee80211_leave_mesh,
2733 #endif
2734         .change_bss = ieee80211_change_bss,
2735         .set_txq_params = ieee80211_set_txq_params,
2736         .set_channel = ieee80211_set_channel,
2737         .suspend = ieee80211_suspend,
2738         .resume = ieee80211_resume,
2739         .scan = ieee80211_scan,
2740         .sched_scan_start = ieee80211_sched_scan_start,
2741         .sched_scan_stop = ieee80211_sched_scan_stop,
2742         .auth = ieee80211_auth,
2743         .assoc = ieee80211_assoc,
2744         .deauth = ieee80211_deauth,
2745         .disassoc = ieee80211_disassoc,
2746         .join_ibss = ieee80211_join_ibss,
2747         .leave_ibss = ieee80211_leave_ibss,
2748         .set_wiphy_params = ieee80211_set_wiphy_params,
2749         .set_tx_power = ieee80211_set_tx_power,
2750         .get_tx_power = ieee80211_get_tx_power,
2751         .set_wds_peer = ieee80211_set_wds_peer,
2752         .rfkill_poll = ieee80211_rfkill_poll,
2753         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2754         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2755         .set_power_mgmt = ieee80211_set_power_mgmt,
2756         .set_bitrate_mask = ieee80211_set_bitrate_mask,
2757         .remain_on_channel = ieee80211_remain_on_channel,
2758         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2759         .mgmt_tx = ieee80211_mgmt_tx,
2760         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2761         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2762         .mgmt_frame_register = ieee80211_mgmt_frame_register,
2763         .set_antenna = ieee80211_set_antenna,
2764         .get_antenna = ieee80211_get_antenna,
2765         .set_ringparam = ieee80211_set_ringparam,
2766         .get_ringparam = ieee80211_get_ringparam,
2767         .set_rekey_data = ieee80211_set_rekey_data,
2768         .tdls_oper = ieee80211_tdls_oper,
2769         .tdls_mgmt = ieee80211_tdls_mgmt,
2770         .probe_client = ieee80211_probe_client,
2771         .get_channel = ieee80211_wiphy_get_channel,
2772         .set_noack_map = ieee80211_set_noack_map,
2773 #ifdef CONFIG_PM
2774         .set_wakeup = ieee80211_set_wakeup,
2775 #endif
2776 };