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 <net/cfg80211.h>
  16 #include "ieee80211_i.h"
  17 #include "driver-ops.h"
  18 #include "cfg.h"
  19 #include "rate.h"
  20 #include "mesh.h"
  21
  22 static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
  23                                               enum nl80211_iftype type,
  24                                               u32 *flags,
  25                                               struct vif_params *params)
  26 {
  27         struct ieee80211_local *local = wiphy_priv(wiphy);
  28         struct net_device *dev;
  29         struct ieee80211_sub_if_data *sdata;
  30         int err;
  31
  32         err = ieee80211_if_add(local, name, &dev, type, params);
  33         if (err)
  34                 return ERR_PTR(err);
  35
  36         if (type == NL80211_IFTYPE_MONITOR && flags) {
  37                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  38                 sdata->u.mntr_flags = *flags;
  39         }
  40
  41         return dev;
  42 }
  43
  44 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
  45 {
  46         ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
  47
  48         return 0;
  49 }
  50
  51 static int ieee80211_change_iface(struct wiphy *wiphy,
  52                                   struct net_device *dev,
  53                                   enum nl80211_iftype type, u32 *flags,
  54                                   struct vif_params *params)
  55 {
  56         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  57         int ret;
  58
  59         ret = ieee80211_if_change_type(sdata, type);
  60         if (ret)
  61                 return ret;
  62
  63         if (type == NL80211_IFTYPE_AP_VLAN &&
  64             params && params->use_4addr == 0)
  65                 rcu_assign_pointer(sdata->u.vlan.sta, NULL);
  66         else if (type == NL80211_IFTYPE_STATION &&
  67                  params && params->use_4addr >= 0)
  68                 sdata->u.mgd.use_4addr = params->use_4addr;
  69
  70         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  71                 struct ieee80211_local *local = sdata->local;
  72
  73                 if (ieee80211_sdata_running(sdata)) {
  74                         /*
  75                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  76                          * changed while the interface is up.
  77                          * Else we would need to add a lot of cruft
  78                          * to update everything:
  79                          *      cooked_mntrs, monitor and all fif_* counters
  80                          *      reconfigure hardware
  81                          */
  82                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  83                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  84                                 return -EBUSY;
  85
  86                         ieee80211_adjust_monitor_flags(sdata, -1);
  87                         sdata->u.mntr_flags = *flags;
  88                         ieee80211_adjust_monitor_flags(sdata, 1);
  89
  90                         ieee80211_configure_filter(local);
  91                 } else {
  92                         /*
  93                          * Because the interface is down, ieee80211_do_stop
  94                          * and ieee80211_do_open take care of "everything"
  95                          * mentioned in the comment above.
  96                          */
  97                         sdata->u.mntr_flags = *flags;
  98                 }
  99         }
 100
 101         return 0;
 102 }
 103
 104 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 105                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 106                              struct key_params *params)
 107 {
 108         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 109         struct sta_info *sta = NULL;
 110         struct ieee80211_key *key;
 111         int err;
 112
 113         if (!ieee80211_sdata_running(sdata))
 114                 return -ENETDOWN;
 115
 116         /* reject WEP and TKIP keys if WEP failed to initialize */
 117         switch (params->cipher) {
 118         case WLAN_CIPHER_SUITE_WEP40:
 119         case WLAN_CIPHER_SUITE_TKIP:
 120         case WLAN_CIPHER_SUITE_WEP104:
 121                 if (IS_ERR(sdata->local->wep_tx_tfm))
 122                         return -EINVAL;
 123                 break;
 124         default:
 125                 break;
 126         }
 127
 128         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 129                                   params->key, params->seq_len, params->seq);
 130         if (IS_ERR(key))
 131                 return PTR_ERR(key);
 132
 133         if (pairwise)
 134                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 135
 136         mutex_lock(&sdata->local->sta_mtx);
 137
 138         if (mac_addr) {
 139                 sta = sta_info_get_bss(sdata, mac_addr);
 140                 if (!sta) {
 141                         ieee80211_key_free(sdata->local, key);
 142                         err = -ENOENT;
 143                         goto out_unlock;
 144                 }
 145         }
 146
 147         err = ieee80211_key_link(key, sdata, sta);
 148         if (err)
 149                 ieee80211_key_free(sdata->local, key);
 150
 151  out_unlock:
 152         mutex_unlock(&sdata->local->sta_mtx);
 153
 154         return err;
 155 }
 156
 157 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 158                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 159 {
 160         struct ieee80211_sub_if_data *sdata;
 161         struct sta_info *sta;
 162         int ret;
 163
 164         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 165
 166         mutex_lock(&sdata->local->sta_mtx);
 167
 168         if (mac_addr) {
 169                 ret = -ENOENT;
 170
 171                 sta = sta_info_get_bss(sdata, mac_addr);
 172                 if (!sta)
 173                         goto out_unlock;
 174
 175                 if (pairwise) {
 176                         if (sta->ptk) {
 177                                 ieee80211_key_free(sdata->local, sta->ptk);
 178                                 ret = 0;
 179                         }
 180                 } else {
 181                         if (sta->gtk[key_idx]) {
 182                                 ieee80211_key_free(sdata->local,
 183                                                    sta->gtk[key_idx]);
 184                                 ret = 0;
 185                         }
 186                 }
 187
 188                 goto out_unlock;
 189         }
 190
 191         if (!sdata->keys[key_idx]) {
 192                 ret = -ENOENT;
 193                 goto out_unlock;
 194         }
 195
 196         ieee80211_key_free(sdata->local, sdata->keys[key_idx]);
 197         WARN_ON(sdata->keys[key_idx]);
 198
 199         ret = 0;
 200  out_unlock:
 201         mutex_unlock(&sdata->local->sta_mtx);
 202
 203         return ret;
 204 }
 205
 206 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 207                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 208                              void *cookie,
 209                              void (*callback)(void *cookie,
 210                                               struct key_params *params))
 211 {
 212         struct ieee80211_sub_if_data *sdata;
 213         struct sta_info *sta = NULL;
 214         u8 seq[6] = {0};
 215         struct key_params params;
 216         struct ieee80211_key *key = NULL;
 217         u32 iv32;
 218         u16 iv16;
 219         int err = -ENOENT;
 220
 221         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 222
 223         rcu_read_lock();
 224
 225         if (mac_addr) {
 226                 sta = sta_info_get_bss(sdata, mac_addr);
 227                 if (!sta)
 228                         goto out;
 229
 230                 if (pairwise)
 231                         key = sta->ptk;
 232                 else if (key_idx < NUM_DEFAULT_KEYS)
 233                         key = sta->gtk[key_idx];
 234         } else
 235                 key = sdata->keys[key_idx];
 236
 237         if (!key)
 238                 goto out;
 239
 240         memset(&params, 0, sizeof(params));
 241
 242         params.cipher = key->conf.cipher;
 243
 244         switch (key->conf.cipher) {
 245         case WLAN_CIPHER_SUITE_TKIP:
 246                 iv32 = key->u.tkip.tx.iv32;
 247                 iv16 = key->u.tkip.tx.iv16;
 248
 249                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 250                         drv_get_tkip_seq(sdata->local,
 251                                          key->conf.hw_key_idx,
 252                                          &iv32, &iv16);
 253
 254                 seq[0] = iv16 & 0xff;
 255                 seq[1] = (iv16 >> 8) & 0xff;
 256                 seq[2] = iv32 & 0xff;
 257                 seq[3] = (iv32 >> 8) & 0xff;
 258                 seq[4] = (iv32 >> 16) & 0xff;
 259                 seq[5] = (iv32 >> 24) & 0xff;
 260                 params.seq = seq;
 261                 params.seq_len = 6;
 262                 break;
 263         case WLAN_CIPHER_SUITE_CCMP:
 264                 seq[0] = key->u.ccmp.tx_pn[5];
 265                 seq[1] = key->u.ccmp.tx_pn[4];
 266                 seq[2] = key->u.ccmp.tx_pn[3];
 267                 seq[3] = key->u.ccmp.tx_pn[2];
 268                 seq[4] = key->u.ccmp.tx_pn[1];
 269                 seq[5] = key->u.ccmp.tx_pn[0];
 270                 params.seq = seq;
 271                 params.seq_len = 6;
 272                 break;
 273         case WLAN_CIPHER_SUITE_AES_CMAC:
 274                 seq[0] = key->u.aes_cmac.tx_pn[5];
 275                 seq[1] = key->u.aes_cmac.tx_pn[4];
 276                 seq[2] = key->u.aes_cmac.tx_pn[3];
 277                 seq[3] = key->u.aes_cmac.tx_pn[2];
 278                 seq[4] = key->u.aes_cmac.tx_pn[1];
 279                 seq[5] = key->u.aes_cmac.tx_pn[0];
 280                 params.seq = seq;
 281                 params.seq_len = 6;
 282                 break;
 283         }
 284
 285         params.key = key->conf.key;
 286         params.key_len = key->conf.keylen;
 287
 288         callback(cookie, &params);
 289         err = 0;
 290
 291  out:
 292         rcu_read_unlock();
 293         return err;
 294 }
 295
 296 static int ieee80211_config_default_key(struct wiphy *wiphy,
 297                                         struct net_device *dev,
 298                                         u8 key_idx, bool uni,
 299                                         bool multi)
 300 {
 301         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 302
 303         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 304
 305         return 0;
 306 }
 307
 308 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 309                                              struct net_device *dev,
 310                                              u8 key_idx)
 311 {
 312         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 313
 314         ieee80211_set_default_mgmt_key(sdata, key_idx);
 315
 316         return 0;
 317 }
 318
 319 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
 320 {
 321         if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
 322                 struct ieee80211_supported_band *sband;
 323                 sband = sta->local->hw.wiphy->bands[
 324                                 sta->local->hw.conf.channel->band];
 325                 rate->legacy = sband->bitrates[idx].bitrate;
 326         } else
 327                 rate->mcs = idx;
 328 }
 329
 330 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 331 {
 332         struct ieee80211_sub_if_data *sdata = sta->sdata;
 333
 334         sinfo->generation = sdata->local->sta_generation;
 335
 336         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 337                         STATION_INFO_RX_BYTES |
 338                         STATION_INFO_TX_BYTES |
 339                         STATION_INFO_RX_PACKETS |
 340                         STATION_INFO_TX_PACKETS |
 341                         STATION_INFO_TX_RETRIES |
 342                         STATION_INFO_TX_FAILED |
 343                         STATION_INFO_TX_BITRATE |
 344                         STATION_INFO_RX_BITRATE |
 345                         STATION_INFO_RX_DROP_MISC;
 346
 347         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 348         sinfo->rx_bytes = sta->rx_bytes;
 349         sinfo->tx_bytes = sta->tx_bytes;
 350         sinfo->rx_packets = sta->rx_packets;
 351         sinfo->tx_packets = sta->tx_packets;
 352         sinfo->tx_retries = sta->tx_retry_count;
 353         sinfo->tx_failed = sta->tx_retry_failed;
 354         sinfo->rx_dropped_misc = sta->rx_dropped;
 355
 356         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 357             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 358                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 359                 sinfo->signal = (s8)sta->last_signal;
 360                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 361         }
 362
 363         sinfo->txrate.flags = 0;
 364         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 365                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 366         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 367                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 368         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 369                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 370         rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx);
 371
 372         sinfo->rxrate.flags = 0;
 373         if (sta->last_rx_rate_flag & RX_FLAG_HT)
 374                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
 375         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 376                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 377         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 378                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 379         rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
 380
 381         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 382 #ifdef CONFIG_MAC80211_MESH
 383                 sinfo->filled |= STATION_INFO_LLID |
 384                                  STATION_INFO_PLID |
 385                                  STATION_INFO_PLINK_STATE;
 386
 387                 sinfo->llid = le16_to_cpu(sta->llid);
 388                 sinfo->plid = le16_to_cpu(sta->plid);
 389                 sinfo->plink_state = sta->plink_state;
 390 #endif
 391         }
 392 }
 393
 394
 395 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 396                                  int idx, u8 *mac, struct station_info *sinfo)
 397 {
 398         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 399         struct sta_info *sta;
 400         int ret = -ENOENT;
 401
 402         rcu_read_lock();
 403
 404         sta = sta_info_get_by_idx(sdata, idx);
 405         if (sta) {
 406                 ret = 0;
 407                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 408                 sta_set_sinfo(sta, sinfo);
 409         }
 410
 411         rcu_read_unlock();
 412
 413         return ret;
 414 }
 415
 416 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 417                                  int idx, struct survey_info *survey)
 418 {
 419         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 420
 421         return drv_get_survey(local, idx, survey);
 422 }
 423
 424 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 425                                  u8 *mac, struct station_info *sinfo)
 426 {
 427         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 428         struct sta_info *sta;
 429         int ret = -ENOENT;
 430
 431         rcu_read_lock();
 432
 433         sta = sta_info_get_bss(sdata, mac);
 434         if (sta) {
 435                 ret = 0;
 436                 sta_set_sinfo(sta, sinfo);
 437         }
 438
 439         rcu_read_unlock();
 440
 441         return ret;
 442 }
 443
 444 /*
 445  * This handles both adding a beacon and setting new beacon info
 446  */
 447 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 448                                    struct beacon_parameters *params)
 449 {
 450         struct beacon_data *new, *old;
 451         int new_head_len, new_tail_len;
 452         int size;
 453         int err = -EINVAL;
 454
 455         old = sdata->u.ap.beacon;
 456
 457         /* head must not be zero-length */
 458         if (params->head && !params->head_len)
 459                 return -EINVAL;
 460
 461         /*
 462          * This is a kludge. beacon interval should really be part
 463          * of the beacon information.
 464          */
 465         if (params->interval &&
 466             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 467                 sdata->vif.bss_conf.beacon_int = params->interval;
 468                 ieee80211_bss_info_change_notify(sdata,
 469                                                  BSS_CHANGED_BEACON_INT);
 470         }
 471
 472         /* Need to have a beacon head if we don't have one yet */
 473         if (!params->head && !old)
 474                 return err;
 475
 476         /* sorry, no way to start beaconing without dtim period */
 477         if (!params->dtim_period && !old)
 478                 return err;
 479
 480         /* new or old head? */
 481         if (params->head)
 482                 new_head_len = params->head_len;
 483         else
 484                 new_head_len = old->head_len;
 485
 486         /* new or old tail? */
 487         if (params->tail || !old)
 488                 /* params->tail_len will be zero for !params->tail */
 489                 new_tail_len = params->tail_len;
 490         else
 491                 new_tail_len = old->tail_len;
 492
 493         size = sizeof(*new) + new_head_len + new_tail_len;
 494
 495         new = kzalloc(size, GFP_KERNEL);
 496         if (!new)
 497                 return -ENOMEM;
 498
 499         /* start filling the new info now */
 500
 501         /* new or old dtim period? */
 502         if (params->dtim_period)
 503                 new->dtim_period = params->dtim_period;
 504         else
 505                 new->dtim_period = old->dtim_period;
 506
 507         /*
 508          * pointers go into the block we allocated,
 509          * memory is | beacon_data | head | tail |
 510          */
 511         new->head = ((u8 *) new) + sizeof(*new);
 512         new->tail = new->head + new_head_len;
 513         new->head_len = new_head_len;
 514         new->tail_len = new_tail_len;
 515
 516         /* copy in head */
 517         if (params->head)
 518                 memcpy(new->head, params->head, new_head_len);
 519         else
 520                 memcpy(new->head, old->head, new_head_len);
 521
 522         /* copy in optional tail */
 523         if (params->tail)
 524                 memcpy(new->tail, params->tail, new_tail_len);
 525         else
 526                 if (old)
 527                         memcpy(new->tail, old->tail, new_tail_len);
 528
 529         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 530
 531         rcu_assign_pointer(sdata->u.ap.beacon, new);
 532
 533         synchronize_rcu();
 534
 535         kfree(old);
 536
 537         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
 538                                                 BSS_CHANGED_BEACON);
 539         return 0;
 540 }
 541
 542 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 543                                 struct beacon_parameters *params)
 544 {
 545         struct ieee80211_sub_if_data *sdata;
 546         struct beacon_data *old;
 547
 548         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 549
 550         old = sdata->u.ap.beacon;
 551
 552         if (old)
 553                 return -EALREADY;
 554
 555         return ieee80211_config_beacon(sdata, params);
 556 }
 557
 558 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 559                                 struct beacon_parameters *params)
 560 {
 561         struct ieee80211_sub_if_data *sdata;
 562         struct beacon_data *old;
 563
 564         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 565
 566         old = sdata->u.ap.beacon;
 567
 568         if (!old)
 569                 return -ENOENT;
 570
 571         return ieee80211_config_beacon(sdata, params);
 572 }
 573
 574 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 575 {
 576         struct ieee80211_sub_if_data *sdata;
 577         struct beacon_data *old;
 578
 579         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 580
 581         old = sdata->u.ap.beacon;
 582
 583         if (!old)
 584                 return -ENOENT;
 585
 586         rcu_assign_pointer(sdata->u.ap.beacon, NULL);
 587         synchronize_rcu();
 588         kfree(old);
 589
 590         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 591         return 0;
 592 }
 593
 594 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 595 struct iapp_layer2_update {
 596         u8 da[ETH_ALEN];        /* broadcast */
 597         u8 sa[ETH_ALEN];        /* STA addr */
 598         __be16 len;             /* 6 */
 599         u8 dsap;                /* 0 */
 600         u8 ssap;                /* 0 */
 601         u8 control;
 602         u8 xid_info[3];
 603 } __packed;
 604
 605 static void ieee80211_send_layer2_update(struct sta_info *sta)
 606 {
 607         struct iapp_layer2_update *msg;
 608         struct sk_buff *skb;
 609
 610         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 611          * bridge devices */
 612
 613         skb = dev_alloc_skb(sizeof(*msg));
 614         if (!skb)
 615                 return;
 616         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 617
 618         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 619          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 620
 621         memset(msg->da, 0xff, ETH_ALEN);
 622         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 623         msg->len = htons(6);
 624         msg->dsap = 0;
 625         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 626         msg->control = 0xaf;    /* XID response lsb.1111F101.
 627                                  * F=0 (no poll command; unsolicited frame) */
 628         msg->xid_info[0] = 0x81;        /* XID format identifier */
 629         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 630         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 631
 632         skb->dev = sta->sdata->dev;
 633         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 634         memset(skb->cb, 0, sizeof(skb->cb));
 635         netif_rx_ni(skb);
 636 }
 637
 638 static void sta_apply_parameters(struct ieee80211_local *local,
 639                                  struct sta_info *sta,
 640                                  struct station_parameters *params)
 641 {
 642         unsigned long flags;
 643         u32 rates;
 644         int i, j;
 645         struct ieee80211_supported_band *sband;
 646         struct ieee80211_sub_if_data *sdata = sta->sdata;
 647         u32 mask, set;
 648
 649         sband = local->hw.wiphy->bands[local->oper_channel->band];
 650
 651         spin_lock_irqsave(&sta->flaglock, flags);
 652         mask = params->sta_flags_mask;
 653         set = params->sta_flags_set;
 654
 655         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 656                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 657                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 658                         sta->flags |= WLAN_STA_AUTHORIZED;
 659         }
 660
 661         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 662                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 663                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 664                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 665         }
 666
 667         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 668                 sta->flags &= ~WLAN_STA_WME;
 669                 if (set & BIT(NL80211_STA_FLAG_WME))
 670                         sta->flags |= WLAN_STA_WME;
 671         }
 672
 673         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 674                 sta->flags &= ~WLAN_STA_MFP;
 675                 if (set & BIT(NL80211_STA_FLAG_MFP))
 676                         sta->flags |= WLAN_STA_MFP;
 677         }
 678         spin_unlock_irqrestore(&sta->flaglock, flags);
 679
 680         /*
 681          * cfg80211 validates this (1-2007) and allows setting the AID
 682          * only when creating a new station entry
 683          */
 684         if (params->aid)
 685                 sta->sta.aid = params->aid;
 686
 687         /*
 688          * FIXME: updating the following information is racy when this
 689          *        function is called from ieee80211_change_station().
 690          *        However, all this information should be static so
 691          *        maybe we should just reject attemps to change it.
 692          */
 693
 694         if (params->listen_interval >= 0)
 695                 sta->listen_interval = params->listen_interval;
 696
 697         if (params->supported_rates) {
 698                 rates = 0;
 699
 700                 for (i = 0; i < params->supported_rates_len; i++) {
 701                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 702                         for (j = 0; j < sband->n_bitrates; j++) {
 703                                 if (sband->bitrates[j].bitrate == rate)
 704                                         rates |= BIT(j);
 705                         }
 706                 }
 707                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 708         }
 709
 710         if (params->ht_capa)
 711                 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
 712                                                   params->ht_capa,
 713                                                   &sta->sta.ht_cap);
 714
 715         if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
 716                 switch (params->plink_action) {
 717                 case PLINK_ACTION_OPEN:
 718                         mesh_plink_open(sta);
 719                         break;
 720                 case PLINK_ACTION_BLOCK:
 721                         mesh_plink_block(sta);
 722                         break;
 723                 }
 724         }
 725 }
 726
 727 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 728                                  u8 *mac, struct station_parameters *params)
 729 {
 730         struct ieee80211_local *local = wiphy_priv(wiphy);
 731         struct sta_info *sta;
 732         struct ieee80211_sub_if_data *sdata;
 733         int err;
 734         int layer2_update;
 735
 736         if (params->vlan) {
 737                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 738
 739                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 740                     sdata->vif.type != NL80211_IFTYPE_AP)
 741                         return -EINVAL;
 742         } else
 743                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 744
 745         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 746                 return -EINVAL;
 747
 748         if (is_multicast_ether_addr(mac))
 749                 return -EINVAL;
 750
 751         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 752         if (!sta)
 753                 return -ENOMEM;
 754
 755         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 756
 757         sta_apply_parameters(local, sta, params);
 758
 759         rate_control_rate_init(sta);
 760
 761         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 762                 sdata->vif.type == NL80211_IFTYPE_AP;
 763
 764         err = sta_info_insert_rcu(sta);
 765         if (err) {
 766                 rcu_read_unlock();
 767                 return err;
 768         }
 769
 770         if (layer2_update)
 771                 ieee80211_send_layer2_update(sta);
 772
 773         rcu_read_unlock();
 774
 775         return 0;
 776 }
 777
 778 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 779                                  u8 *mac)
 780 {
 781         struct ieee80211_local *local = wiphy_priv(wiphy);
 782         struct ieee80211_sub_if_data *sdata;
 783
 784         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 785
 786         if (mac)
 787                 return sta_info_destroy_addr_bss(sdata, mac);
 788
 789         sta_info_flush(local, sdata);
 790         return 0;
 791 }
 792
 793 static int ieee80211_change_station(struct wiphy *wiphy,
 794                                     struct net_device *dev,
 795                                     u8 *mac,
 796                                     struct station_parameters *params)
 797 {
 798         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 799         struct ieee80211_local *local = wiphy_priv(wiphy);
 800         struct sta_info *sta;
 801         struct ieee80211_sub_if_data *vlansdata;
 802
 803         rcu_read_lock();
 804
 805         sta = sta_info_get_bss(sdata, mac);
 806         if (!sta) {
 807                 rcu_read_unlock();
 808                 return -ENOENT;
 809         }
 810
 811         if (params->vlan && params->vlan != sta->sdata->dev) {
 812                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 813
 814                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 815                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
 816                         rcu_read_unlock();
 817                         return -EINVAL;
 818                 }
 819
 820                 if (params->vlan->ieee80211_ptr->use_4addr) {
 821                         if (vlansdata->u.vlan.sta) {
 822                                 rcu_read_unlock();
 823                                 return -EBUSY;
 824                         }
 825
 826                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
 827                 }
 828
 829                 sta->sdata = vlansdata;
 830                 ieee80211_send_layer2_update(sta);
 831         }
 832
 833         sta_apply_parameters(local, sta, params);
 834
 835         rcu_read_unlock();
 836
 837         return 0;
 838 }
 839
 840 #ifdef CONFIG_MAC80211_MESH
 841 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 842                                  u8 *dst, u8 *next_hop)
 843 {
 844         struct ieee80211_sub_if_data *sdata;
 845         struct mesh_path *mpath;
 846         struct sta_info *sta;
 847         int err;
 848
 849         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 850
 851         rcu_read_lock();
 852         sta = sta_info_get(sdata, next_hop);
 853         if (!sta) {
 854                 rcu_read_unlock();
 855                 return -ENOENT;
 856         }
 857
 858         err = mesh_path_add(dst, sdata);
 859         if (err) {
 860                 rcu_read_unlock();
 861                 return err;
 862         }
 863
 864         mpath = mesh_path_lookup(dst, sdata);
 865         if (!mpath) {
 866                 rcu_read_unlock();
 867                 return -ENXIO;
 868         }
 869         mesh_path_fix_nexthop(mpath, sta);
 870
 871         rcu_read_unlock();
 872         return 0;
 873 }
 874
 875 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 876                                  u8 *dst)
 877 {
 878         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 879
 880         if (dst)
 881                 return mesh_path_del(dst, sdata);
 882
 883         mesh_path_flush(sdata);
 884         return 0;
 885 }
 886
 887 static int ieee80211_change_mpath(struct wiphy *wiphy,
 888                                     struct net_device *dev,
 889                                     u8 *dst, u8 *next_hop)
 890 {
 891         struct ieee80211_sub_if_data *sdata;
 892         struct mesh_path *mpath;
 893         struct sta_info *sta;
 894
 895         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 896
 897         rcu_read_lock();
 898
 899         sta = sta_info_get(sdata, next_hop);
 900         if (!sta) {
 901                 rcu_read_unlock();
 902                 return -ENOENT;
 903         }
 904
 905         mpath = mesh_path_lookup(dst, sdata);
 906         if (!mpath) {
 907                 rcu_read_unlock();
 908                 return -ENOENT;
 909         }
 910
 911         mesh_path_fix_nexthop(mpath, sta);
 912
 913         rcu_read_unlock();
 914         return 0;
 915 }
 916
 917 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
 918                             struct mpath_info *pinfo)
 919 {
 920         if (mpath->next_hop)
 921                 memcpy(next_hop, mpath->next_hop->sta.addr, ETH_ALEN);
 922         else
 923                 memset(next_hop, 0, ETH_ALEN);
 924
 925         pinfo->generation = mesh_paths_generation;
 926
 927         pinfo->filled = MPATH_INFO_FRAME_QLEN |
 928                         MPATH_INFO_SN |
 929                         MPATH_INFO_METRIC |
 930                         MPATH_INFO_EXPTIME |
 931                         MPATH_INFO_DISCOVERY_TIMEOUT |
 932                         MPATH_INFO_DISCOVERY_RETRIES |
 933                         MPATH_INFO_FLAGS;
 934
 935         pinfo->frame_qlen = mpath->frame_queue.qlen;
 936         pinfo->sn = mpath->sn;
 937         pinfo->metric = mpath->metric;
 938         if (time_before(jiffies, mpath->exp_time))
 939                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
 940         pinfo->discovery_timeout =
 941                         jiffies_to_msecs(mpath->discovery_timeout);
 942         pinfo->discovery_retries = mpath->discovery_retries;
 943         pinfo->flags = 0;
 944         if (mpath->flags & MESH_PATH_ACTIVE)
 945                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
 946         if (mpath->flags & MESH_PATH_RESOLVING)
 947                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 948         if (mpath->flags & MESH_PATH_SN_VALID)
 949                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
 950         if (mpath->flags & MESH_PATH_FIXED)
 951                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
 952         if (mpath->flags & MESH_PATH_RESOLVING)
 953                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 954
 955         pinfo->flags = mpath->flags;
 956 }
 957
 958 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
 959                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
 960
 961 {
 962         struct ieee80211_sub_if_data *sdata;
 963         struct mesh_path *mpath;
 964
 965         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 966
 967         rcu_read_lock();
 968         mpath = mesh_path_lookup(dst, sdata);
 969         if (!mpath) {
 970                 rcu_read_unlock();
 971                 return -ENOENT;
 972         }
 973         memcpy(dst, mpath->dst, ETH_ALEN);
 974         mpath_set_pinfo(mpath, next_hop, pinfo);
 975         rcu_read_unlock();
 976         return 0;
 977 }
 978
 979 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
 980                                  int idx, u8 *dst, u8 *next_hop,
 981                                  struct mpath_info *pinfo)
 982 {
 983         struct ieee80211_sub_if_data *sdata;
 984         struct mesh_path *mpath;
 985
 986         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 987
 988         rcu_read_lock();
 989         mpath = mesh_path_lookup_by_idx(idx, sdata);
 990         if (!mpath) {
 991                 rcu_read_unlock();
 992                 return -ENOENT;
 993         }
 994         memcpy(dst, mpath->dst, ETH_ALEN);
 995         mpath_set_pinfo(mpath, next_hop, pinfo);
 996         rcu_read_unlock();
 997         return 0;
 998 }
 999
1000 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1001                                 struct net_device *dev,
1002                                 struct mesh_config *conf)
1003 {
1004         struct ieee80211_sub_if_data *sdata;
1005         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1006
1007         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1008         return 0;
1009 }
1010
1011 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1012 {
1013         return (mask >> (parm-1)) & 0x1;
1014 }
1015
1016 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1017                 const struct mesh_setup *setup)
1018 {
1019         u8 *new_ie;
1020         const u8 *old_ie;
1021
1022         /* first allocate the new vendor information element */
1023         new_ie = NULL;
1024         old_ie = ifmsh->vendor_ie;
1025
1026         ifmsh->vendor_ie_len = setup->vendor_ie_len;
1027         if (setup->vendor_ie_len) {
1028                 new_ie = kmemdup(setup->vendor_ie, setup->vendor_ie_len,
1029                                 GFP_KERNEL);
1030                 if (!new_ie)
1031                         return -ENOMEM;
1032         }
1033
1034         /* now copy the rest of the setup parameters */
1035         ifmsh->mesh_id_len = setup->mesh_id_len;
1036         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1037         ifmsh->mesh_pp_id = setup->path_sel_proto;
1038         ifmsh->mesh_pm_id = setup->path_metric;
1039         ifmsh->vendor_ie = new_ie;
1040
1041         kfree(old_ie);
1042
1043         return 0;
1044 }
1045
1046 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1047                                         struct net_device *dev, u32 mask,
1048                                         const struct mesh_config *nconf)
1049 {
1050         struct mesh_config *conf;
1051         struct ieee80211_sub_if_data *sdata;
1052         struct ieee80211_if_mesh *ifmsh;
1053
1054         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1055         ifmsh = &sdata->u.mesh;
1056
1057         /* Set the config options which we are interested in setting */
1058         conf = &(sdata->u.mesh.mshcfg);
1059         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1060                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1061         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1062                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1063         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1064                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1065         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1066                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1067         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1068                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1069         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1070                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1071         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1072                 conf->dot11MeshTTL = nconf->element_ttl;
1073         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1074                 conf->auto_open_plinks = nconf->auto_open_plinks;
1075         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1076                 conf->dot11MeshHWMPmaxPREQretries =
1077                         nconf->dot11MeshHWMPmaxPREQretries;
1078         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1079                 conf->path_refresh_time = nconf->path_refresh_time;
1080         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1081                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1082         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1083                 conf->dot11MeshHWMPactivePathTimeout =
1084                         nconf->dot11MeshHWMPactivePathTimeout;
1085         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1086                 conf->dot11MeshHWMPpreqMinInterval =
1087                         nconf->dot11MeshHWMPpreqMinInterval;
1088         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1089                            mask))
1090                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1091                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1092         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1093                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1094                 ieee80211_mesh_root_setup(ifmsh);
1095         }
1096         return 0;
1097 }
1098
1099 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1100                                const struct mesh_config *conf,
1101                                const struct mesh_setup *setup)
1102 {
1103         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1104         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1105         int err;
1106
1107         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1108         err = copy_mesh_setup(ifmsh, setup);
1109         if (err)
1110                 return err;
1111         ieee80211_start_mesh(sdata);
1112
1113         return 0;
1114 }
1115
1116 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1117 {
1118         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1119
1120         ieee80211_stop_mesh(sdata);
1121
1122         return 0;
1123 }
1124 #endif
1125
1126 static int ieee80211_change_bss(struct wiphy *wiphy,
1127                                 struct net_device *dev,
1128                                 struct bss_parameters *params)
1129 {
1130         struct ieee80211_sub_if_data *sdata;
1131         u32 changed = 0;
1132
1133         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1134
1135         if (params->use_cts_prot >= 0) {
1136                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1137                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1138         }
1139         if (params->use_short_preamble >= 0) {
1140                 sdata->vif.bss_conf.use_short_preamble =
1141                         params->use_short_preamble;
1142                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1143         }
1144
1145         if (!sdata->vif.bss_conf.use_short_slot &&
1146             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1147                 sdata->vif.bss_conf.use_short_slot = true;
1148                 changed |= BSS_CHANGED_ERP_SLOT;
1149         }
1150
1151         if (params->use_short_slot_time >= 0) {
1152                 sdata->vif.bss_conf.use_short_slot =
1153                         params->use_short_slot_time;
1154                 changed |= BSS_CHANGED_ERP_SLOT;
1155         }
1156
1157         if (params->basic_rates) {
1158                 int i, j;
1159                 u32 rates = 0;
1160                 struct ieee80211_local *local = wiphy_priv(wiphy);
1161                 struct ieee80211_supported_band *sband =
1162                         wiphy->bands[local->oper_channel->band];
1163
1164                 for (i = 0; i < params->basic_rates_len; i++) {
1165                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1166                         for (j = 0; j < sband->n_bitrates; j++) {
1167                                 if (sband->bitrates[j].bitrate == rate)
1168                                         rates |= BIT(j);
1169                         }
1170                 }
1171                 sdata->vif.bss_conf.basic_rates = rates;
1172                 changed |= BSS_CHANGED_BASIC_RATES;
1173         }
1174
1175         if (params->ap_isolate >= 0) {
1176                 if (params->ap_isolate)
1177                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1178                 else
1179                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1180         }
1181
1182         if (params->ht_opmode >= 0) {
1183                 sdata->vif.bss_conf.ht_operation_mode =
1184                         (u16) params->ht_opmode;
1185                 changed |= BSS_CHANGED_HT;
1186         }
1187
1188         ieee80211_bss_info_change_notify(sdata, changed);
1189
1190         return 0;
1191 }
1192
1193 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1194                                     struct ieee80211_txq_params *params)
1195 {
1196         struct ieee80211_local *local = wiphy_priv(wiphy);
1197         struct ieee80211_tx_queue_params p;
1198
1199         if (!local->ops->conf_tx)
1200                 return -EOPNOTSUPP;
1201
1202         memset(&p, 0, sizeof(p));
1203         p.aifs = params->aifs;
1204         p.cw_max = params->cwmax;
1205         p.cw_min = params->cwmin;
1206         p.txop = params->txop;
1207
1208         /*
1209          * Setting tx queue params disables u-apsd because it's only
1210          * called in master mode.
1211          */
1212         p.uapsd = false;
1213
1214         if (drv_conf_tx(local, params->queue, &p)) {
1215                 wiphy_debug(local->hw.wiphy,
1216                             "failed to set TX queue parameters for queue %d\n",
1217                             params->queue);
1218                 return -EINVAL;
1219         }
1220
1221         return 0;
1222 }
1223
1224 static int ieee80211_set_channel(struct wiphy *wiphy,
1225                                  struct net_device *netdev,
1226                                  struct ieee80211_channel *chan,
1227                                  enum nl80211_channel_type channel_type)
1228 {
1229         struct ieee80211_local *local = wiphy_priv(wiphy);
1230         struct ieee80211_sub_if_data *sdata = NULL;
1231         struct ieee80211_channel *old_oper;
1232         enum nl80211_channel_type old_oper_type;
1233         enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1234
1235         if (netdev)
1236                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1237
1238         switch (ieee80211_get_channel_mode(local, NULL)) {
1239         case CHAN_MODE_HOPPING:
1240                 return -EBUSY;
1241         case CHAN_MODE_FIXED:
1242                 if (local->oper_channel != chan)
1243                         return -EBUSY;
1244                 if (!sdata && local->_oper_channel_type == channel_type)
1245                         return 0;
1246                 break;
1247         case CHAN_MODE_UNDEFINED:
1248                 break;
1249         }
1250
1251         if (sdata)
1252                 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1253         old_oper_type = local->_oper_channel_type;
1254
1255         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1256                 return -EBUSY;
1257
1258         old_oper = local->oper_channel;
1259         local->oper_channel = chan;
1260
1261         /* Update driver if changes were actually made. */
1262         if ((old_oper != local->oper_channel) ||
1263             (old_oper_type != local->_oper_channel_type))
1264                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1265
1266         if ((sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR) &&
1267             old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1268                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1269
1270         return 0;
1271 }
1272
1273 #ifdef CONFIG_PM
1274 static int ieee80211_suspend(struct wiphy *wiphy)
1275 {
1276         return __ieee80211_suspend(wiphy_priv(wiphy));
1277 }
1278
1279 static int ieee80211_resume(struct wiphy *wiphy)
1280 {
1281         return __ieee80211_resume(wiphy_priv(wiphy));
1282 }
1283 #else
1284 #define ieee80211_suspend NULL
1285 #define ieee80211_resume NULL
1286 #endif
1287
1288 static int ieee80211_scan(struct wiphy *wiphy,
1289                           struct net_device *dev,
1290                           struct cfg80211_scan_request *req)
1291 {
1292         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1293
1294         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1295         case NL80211_IFTYPE_STATION:
1296         case NL80211_IFTYPE_ADHOC:
1297         case NL80211_IFTYPE_MESH_POINT:
1298         case NL80211_IFTYPE_P2P_CLIENT:
1299                 break;
1300         case NL80211_IFTYPE_P2P_GO:
1301                 if (sdata->local->ops->hw_scan)
1302                         break;
1303                 /*
1304                  * FIXME: implement NoA while scanning in software,
1305                  * for now fall through to allow scanning only when
1306                  * beaconing hasn't been configured yet
1307                  */
1308         case NL80211_IFTYPE_AP:
1309                 if (sdata->u.ap.beacon)
1310                         return -EOPNOTSUPP;
1311                 break;
1312         default:
1313                 return -EOPNOTSUPP;
1314         }
1315
1316         return ieee80211_request_scan(sdata, req);
1317 }
1318
1319 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1320                           struct cfg80211_auth_request *req)
1321 {
1322         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1323 }
1324
1325 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1326                            struct cfg80211_assoc_request *req)
1327 {
1328         struct ieee80211_local *local = wiphy_priv(wiphy);
1329         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1330
1331         switch (ieee80211_get_channel_mode(local, sdata)) {
1332         case CHAN_MODE_HOPPING:
1333                 return -EBUSY;
1334         case CHAN_MODE_FIXED:
1335                 if (local->oper_channel == req->bss->channel)
1336                         break;
1337                 return -EBUSY;
1338         case CHAN_MODE_UNDEFINED:
1339                 break;
1340         }
1341
1342         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1343 }
1344
1345 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1346                             struct cfg80211_deauth_request *req,
1347                             void *cookie)
1348 {
1349         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1350                                     req, cookie);
1351 }
1352
1353 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1354                               struct cfg80211_disassoc_request *req,
1355                               void *cookie)
1356 {
1357         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1358                                       req, cookie);
1359 }
1360
1361 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1362                                struct cfg80211_ibss_params *params)
1363 {
1364         struct ieee80211_local *local = wiphy_priv(wiphy);
1365         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1366
1367         switch (ieee80211_get_channel_mode(local, sdata)) {
1368         case CHAN_MODE_HOPPING:
1369                 return -EBUSY;
1370         case CHAN_MODE_FIXED:
1371                 if (!params->channel_fixed)
1372                         return -EBUSY;
1373                 if (local->oper_channel == params->channel)
1374                         break;
1375                 return -EBUSY;
1376         case CHAN_MODE_UNDEFINED:
1377                 break;
1378         }
1379
1380         return ieee80211_ibss_join(sdata, params);
1381 }
1382
1383 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1384 {
1385         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1386
1387         return ieee80211_ibss_leave(sdata);
1388 }
1389
1390 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1391 {
1392         struct ieee80211_local *local = wiphy_priv(wiphy);
1393         int err;
1394
1395         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1396                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1397
1398                 if (err)
1399                         return err;
1400         }
1401
1402         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1403                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1404
1405                 if (err)
1406                         return err;
1407         }
1408
1409         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1410                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1411
1412                 if (err)
1413                         return err;
1414         }
1415
1416         if (changed & WIPHY_PARAM_RETRY_SHORT)
1417                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1418         if (changed & WIPHY_PARAM_RETRY_LONG)
1419                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1420         if (changed &
1421             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1422                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1423
1424         return 0;
1425 }
1426
1427 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1428                                   enum nl80211_tx_power_setting type, int mbm)
1429 {
1430         struct ieee80211_local *local = wiphy_priv(wiphy);
1431         struct ieee80211_channel *chan = local->hw.conf.channel;
1432         u32 changes = 0;
1433
1434         switch (type) {
1435         case NL80211_TX_POWER_AUTOMATIC:
1436                 local->user_power_level = -1;
1437                 break;
1438         case NL80211_TX_POWER_LIMITED:
1439                 if (mbm < 0 || (mbm % 100))
1440                         return -EOPNOTSUPP;
1441                 local->user_power_level = MBM_TO_DBM(mbm);
1442                 break;
1443         case NL80211_TX_POWER_FIXED:
1444                 if (mbm < 0 || (mbm % 100))
1445                         return -EOPNOTSUPP;
1446                 /* TODO: move to cfg80211 when it knows the channel */
1447                 if (MBM_TO_DBM(mbm) > chan->max_power)
1448                         return -EINVAL;
1449                 local->user_power_level = MBM_TO_DBM(mbm);
1450                 break;
1451         }
1452
1453         ieee80211_hw_config(local, changes);
1454
1455         return 0;
1456 }
1457
1458 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1459 {
1460         struct ieee80211_local *local = wiphy_priv(wiphy);
1461
1462         *dbm = local->hw.conf.power_level;
1463
1464         return 0;
1465 }
1466
1467 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1468                                   const u8 *addr)
1469 {
1470         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1471
1472         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1473
1474         return 0;
1475 }
1476
1477 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1478 {
1479         struct ieee80211_local *local = wiphy_priv(wiphy);
1480
1481         drv_rfkill_poll(local);
1482 }
1483
1484 #ifdef CONFIG_NL80211_TESTMODE
1485 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1486 {
1487         struct ieee80211_local *local = wiphy_priv(wiphy);
1488
1489         if (!local->ops->testmode_cmd)
1490                 return -EOPNOTSUPP;
1491
1492         return local->ops->testmode_cmd(&local->hw, data, len);
1493 }
1494 #endif
1495
1496 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1497                              enum ieee80211_smps_mode smps_mode)
1498 {
1499         const u8 *ap;
1500         enum ieee80211_smps_mode old_req;
1501         int err;
1502
1503         old_req = sdata->u.mgd.req_smps;
1504         sdata->u.mgd.req_smps = smps_mode;
1505
1506         if (old_req == smps_mode &&
1507             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1508                 return 0;
1509
1510         /*
1511          * If not associated, or current association is not an HT
1512          * association, there's no need to send an action frame.
1513          */
1514         if (!sdata->u.mgd.associated ||
1515             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1516                 mutex_lock(&sdata->local->iflist_mtx);
1517                 ieee80211_recalc_smps(sdata->local);
1518                 mutex_unlock(&sdata->local->iflist_mtx);
1519                 return 0;
1520         }
1521
1522         ap = sdata->u.mgd.associated->bssid;
1523
1524         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1525                 if (sdata->u.mgd.powersave)
1526                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1527                 else
1528                         smps_mode = IEEE80211_SMPS_OFF;
1529         }
1530
1531         /* send SM PS frame to AP */
1532         err = ieee80211_send_smps_action(sdata, smps_mode,
1533                                          ap, ap);
1534         if (err)
1535                 sdata->u.mgd.req_smps = old_req;
1536
1537         return err;
1538 }
1539
1540 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1541                                     bool enabled, int timeout)
1542 {
1543         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1544         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1545
1546         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1547                 return -EOPNOTSUPP;
1548
1549         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1550                 return -EOPNOTSUPP;
1551
1552         if (enabled == sdata->u.mgd.powersave &&
1553             timeout == local->dynamic_ps_forced_timeout)
1554                 return 0;
1555
1556         sdata->u.mgd.powersave = enabled;
1557         local->dynamic_ps_forced_timeout = timeout;
1558
1559         /* no change, but if automatic follow powersave */
1560         mutex_lock(&sdata->u.mgd.mtx);
1561         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1562         mutex_unlock(&sdata->u.mgd.mtx);
1563
1564         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1565                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1566
1567         ieee80211_recalc_ps(local, -1);
1568
1569         return 0;
1570 }
1571
1572 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1573                                          struct net_device *dev,
1574                                          s32 rssi_thold, u32 rssi_hyst)
1575 {
1576         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1577         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1578         struct ieee80211_vif *vif = &sdata->vif;
1579         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1580
1581         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1582             rssi_hyst == bss_conf->cqm_rssi_hyst)
1583                 return 0;
1584
1585         bss_conf->cqm_rssi_thold = rssi_thold;
1586         bss_conf->cqm_rssi_hyst = rssi_hyst;
1587
1588         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1589                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1590                         return -EOPNOTSUPP;
1591                 return 0;
1592         }
1593
1594         /* tell the driver upon association, unless already associated */
1595         if (sdata->u.mgd.associated)
1596                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1597
1598         return 0;
1599 }
1600
1601 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1602                                       struct net_device *dev,
1603                                       const u8 *addr,
1604                                       const struct cfg80211_bitrate_mask *mask)
1605 {
1606         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1607         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1608         int i;
1609
1610         /*
1611          * This _could_ be supported by providing a hook for
1612          * drivers for this function, but at this point it
1613          * doesn't seem worth bothering.
1614          */
1615         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
1616                 return -EOPNOTSUPP;
1617
1618
1619         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1620                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1621
1622         return 0;
1623 }
1624
1625 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1626                                           struct net_device *dev,
1627                                           struct ieee80211_channel *chan,
1628                                           enum nl80211_channel_type chantype,
1629                                           unsigned int duration, u64 *cookie)
1630 {
1631         int ret;
1632         u32 random_cookie;
1633
1634         lockdep_assert_held(&local->mtx);
1635
1636         if (local->hw_roc_cookie)
1637                 return -EBUSY;
1638         /* must be nonzero */
1639         random_cookie = random32() | 1;
1640
1641         *cookie = random_cookie;
1642         local->hw_roc_dev = dev;
1643         local->hw_roc_cookie = random_cookie;
1644         local->hw_roc_channel = chan;
1645         local->hw_roc_channel_type = chantype;
1646         local->hw_roc_duration = duration;
1647         ret = drv_remain_on_channel(local, chan, chantype, duration);
1648         if (ret) {
1649                 local->hw_roc_channel = NULL;
1650                 local->hw_roc_cookie = 0;
1651         }
1652
1653         return ret;
1654 }
1655
1656 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1657                                        struct net_device *dev,
1658                                        struct ieee80211_channel *chan,
1659                                        enum nl80211_channel_type channel_type,
1660                                        unsigned int duration,
1661                                        u64 *cookie)
1662 {
1663         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1664         struct ieee80211_local *local = sdata->local;
1665
1666         if (local->ops->remain_on_channel) {
1667                 int ret;
1668
1669                 mutex_lock(&local->mtx);
1670                 ret = ieee80211_remain_on_channel_hw(local, dev,
1671                                                      chan, channel_type,
1672                                                      duration, cookie);
1673                 local->hw_roc_for_tx = false;
1674                 mutex_unlock(&local->mtx);
1675
1676                 return ret;
1677         }
1678
1679         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1680                                               duration, cookie);
1681 }
1682
1683 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1684                                                  u64 cookie)
1685 {
1686         int ret;
1687
1688         lockdep_assert_held(&local->mtx);
1689
1690         if (local->hw_roc_cookie != cookie)
1691                 return -ENOENT;
1692
1693         ret = drv_cancel_remain_on_channel(local);
1694         if (ret)
1695                 return ret;
1696
1697         local->hw_roc_cookie = 0;
1698         local->hw_roc_channel = NULL;
1699
1700         ieee80211_recalc_idle(local);
1701
1702         return 0;
1703 }
1704
1705 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1706                                               struct net_device *dev,
1707                                               u64 cookie)
1708 {
1709         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1710         struct ieee80211_local *local = sdata->local;
1711
1712         if (local->ops->cancel_remain_on_channel) {
1713                 int ret;
1714
1715                 mutex_lock(&local->mtx);
1716                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
1717                 mutex_unlock(&local->mtx);
1718
1719                 return ret;
1720         }
1721
1722         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1723 }
1724
1725 static enum work_done_result
1726 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
1727 {
1728         /*
1729          * Use the data embedded in the work struct for reporting
1730          * here so if the driver mangled the SKB before dropping
1731          * it (which is the only way we really should get here)
1732          * then we don't report mangled data.
1733          *
1734          * If there was no wait time, then by the time we get here
1735          * the driver will likely not have reported the status yet,
1736          * so in that case userspace will have to deal with it.
1737          */
1738
1739         if (wk->offchan_tx.wait && wk->offchan_tx.frame)
1740                 cfg80211_mgmt_tx_status(wk->sdata->dev,
1741                                         (unsigned long) wk->offchan_tx.frame,
1742                                         wk->ie, wk->ie_len, false, GFP_KERNEL);
1743
1744         return WORK_DONE_DESTROY;
1745 }
1746
1747 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
1748                              struct ieee80211_channel *chan, bool offchan,
1749                              enum nl80211_channel_type channel_type,
1750                              bool channel_type_valid, unsigned int wait,
1751                              const u8 *buf, size_t len, u64 *cookie)
1752 {
1753         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1754         struct ieee80211_local *local = sdata->local;
1755         struct sk_buff *skb;
1756         struct sta_info *sta;
1757         struct ieee80211_work *wk;
1758         const struct ieee80211_mgmt *mgmt = (void *)buf;
1759         u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
1760                     IEEE80211_TX_CTL_REQ_TX_STATUS;
1761         bool is_offchan = false;
1762
1763         /* Check that we are on the requested channel for transmission */
1764         if (chan != local->tmp_channel &&
1765             chan != local->oper_channel)
1766                 is_offchan = true;
1767         if (channel_type_valid &&
1768             (channel_type != local->tmp_channel_type &&
1769              channel_type != local->_oper_channel_type))
1770                 is_offchan = true;
1771
1772         if (chan == local->hw_roc_channel) {
1773                 /* TODO: check channel type? */
1774                 is_offchan = false;
1775                 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
1776         }
1777
1778         if (is_offchan && !offchan)
1779                 return -EBUSY;
1780
1781         switch (sdata->vif.type) {
1782         case NL80211_IFTYPE_ADHOC:
1783         case NL80211_IFTYPE_AP:
1784         case NL80211_IFTYPE_AP_VLAN:
1785         case NL80211_IFTYPE_P2P_GO:
1786         case NL80211_IFTYPE_MESH_POINT:
1787                 if (!ieee80211_is_action(mgmt->frame_control) ||
1788                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
1789                         break;
1790                 rcu_read_lock();
1791                 sta = sta_info_get(sdata, mgmt->da);
1792                 rcu_read_unlock();
1793                 if (!sta)
1794                         return -ENOLINK;
1795                 break;
1796         case NL80211_IFTYPE_STATION:
1797         case NL80211_IFTYPE_P2P_CLIENT:
1798                 break;
1799         default:
1800                 return -EOPNOTSUPP;
1801         }
1802
1803         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
1804         if (!skb)
1805                 return -ENOMEM;
1806         skb_reserve(skb, local->hw.extra_tx_headroom);
1807
1808         memcpy(skb_put(skb, len), buf, len);
1809
1810         IEEE80211_SKB_CB(skb)->flags = flags;
1811
1812         skb->dev = sdata->dev;
1813
1814         *cookie = (unsigned long) skb;
1815
1816         if (is_offchan && local->ops->offchannel_tx) {
1817                 int ret;
1818
1819                 IEEE80211_SKB_CB(skb)->band = chan->band;
1820
1821                 mutex_lock(&local->mtx);
1822
1823                 if (local->hw_offchan_tx_cookie) {
1824                         mutex_unlock(&local->mtx);
1825                         return -EBUSY;
1826                 }
1827
1828                 /* TODO: bitrate control, TX processing? */
1829                 ret = drv_offchannel_tx(local, skb, chan, channel_type, wait);
1830
1831                 if (ret == 0)
1832                         local->hw_offchan_tx_cookie = *cookie;
1833                 mutex_unlock(&local->mtx);
1834
1835                 /*
1836                  * Allow driver to return 1 to indicate it wants to have the
1837                  * frame transmitted with a remain_on_channel + regular TX.
1838                  */
1839                 if (ret != 1)
1840                         return ret;
1841         }
1842
1843         if (is_offchan && local->ops->remain_on_channel) {
1844                 unsigned int duration;
1845                 int ret;
1846
1847                 mutex_lock(&local->mtx);
1848                 /*
1849                  * If the duration is zero, then the driver
1850                  * wouldn't actually do anything. Set it to
1851                  * 100 for now.
1852                  *
1853                  * TODO: cancel the off-channel operation
1854                  *       when we get the SKB's TX status and
1855                  *       the wait time was zero before.
1856                  */
1857                 duration = 100;
1858                 if (wait)
1859                         duration = wait;
1860                 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
1861                                                      channel_type,
1862                                                      duration, cookie);
1863                 if (ret) {
1864                         kfree_skb(skb);
1865                         mutex_unlock(&local->mtx);
1866                         return ret;
1867                 }
1868
1869                 local->hw_roc_for_tx = true;
1870                 local->hw_roc_duration = wait;
1871
1872                 /*
1873                  * queue up frame for transmission after
1874                  * ieee80211_ready_on_channel call
1875                  */
1876
1877                 /* modify cookie to prevent API mismatches */
1878                 *cookie ^= 2;
1879                 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
1880                 local->hw_roc_skb = skb;
1881                 local->hw_roc_skb_for_status = skb;
1882                 mutex_unlock(&local->mtx);
1883
1884                 return 0;
1885         }
1886
1887         /*
1888          * Can transmit right away if the channel was the
1889          * right one and there's no wait involved... If a
1890          * wait is involved, we might otherwise not be on
1891          * the right channel for long enough!
1892          */
1893         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
1894                 ieee80211_tx_skb(sdata, skb);
1895                 return 0;
1896         }
1897
1898         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
1899         if (!wk) {
1900                 kfree_skb(skb);
1901                 return -ENOMEM;
1902         }
1903
1904         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
1905         wk->chan = chan;
1906         wk->chan_type = channel_type;
1907         wk->sdata = sdata;
1908         wk->done = ieee80211_offchan_tx_done;
1909         wk->offchan_tx.frame = skb;
1910         wk->offchan_tx.wait = wait;
1911         wk->ie_len = len;
1912         memcpy(wk->ie, buf, len);
1913
1914         ieee80211_add_work(wk);
1915         return 0;
1916 }
1917
1918 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1919                                          struct net_device *dev,
1920                                          u64 cookie)
1921 {
1922         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1923         struct ieee80211_local *local = sdata->local;
1924         struct ieee80211_work *wk;
1925         int ret = -ENOENT;
1926
1927         mutex_lock(&local->mtx);
1928
1929         if (local->ops->offchannel_tx_cancel_wait &&
1930             local->hw_offchan_tx_cookie == cookie) {
1931                 ret = drv_offchannel_tx_cancel_wait(local);
1932
1933                 if (!ret)
1934                         local->hw_offchan_tx_cookie = 0;
1935
1936                 mutex_unlock(&local->mtx);
1937
1938                 return ret;
1939         }
1940
1941         if (local->ops->cancel_remain_on_channel) {
1942                 cookie ^= 2;
1943                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
1944
1945                 if (ret == 0) {
1946                         kfree_skb(local->hw_roc_skb);
1947                         local->hw_roc_skb = NULL;
1948                         local->hw_roc_skb_for_status = NULL;
1949                 }
1950
1951                 mutex_unlock(&local->mtx);
1952
1953                 return ret;
1954         }
1955
1956         list_for_each_entry(wk, &local->work_list, list) {
1957                 if (wk->sdata != sdata)
1958                         continue;
1959
1960                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
1961                         continue;
1962
1963                 if (cookie != (unsigned long) wk->offchan_tx.frame)
1964                         continue;
1965
1966                 wk->timeout = jiffies;
1967
1968                 ieee80211_queue_work(&local->hw, &local->work_work);
1969                 ret = 0;
1970                 break;
1971         }
1972         mutex_unlock(&local->mtx);
1973
1974         return ret;
1975 }
1976
1977 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
1978                                           struct net_device *dev,
1979                                           u16 frame_type, bool reg)
1980 {
1981         struct ieee80211_local *local = wiphy_priv(wiphy);
1982
1983         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
1984                 return;
1985
1986         if (reg)
1987                 local->probe_req_reg++;
1988         else
1989                 local->probe_req_reg--;
1990
1991         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
1992 }
1993
1994 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
1995 {
1996         struct ieee80211_local *local = wiphy_priv(wiphy);
1997
1998         if (local->started)
1999                 return -EOPNOTSUPP;
2000
2001         return drv_set_antenna(local, tx_ant, rx_ant);
2002 }
2003
2004 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2005 {
2006         struct ieee80211_local *local = wiphy_priv(wiphy);
2007
2008         return drv_get_antenna(local, tx_ant, rx_ant);
2009 }
2010
2011 struct cfg80211_ops mac80211_config_ops = {
2012         .add_virtual_intf = ieee80211_add_iface,
2013         .del_virtual_intf = ieee80211_del_iface,
2014         .change_virtual_intf = ieee80211_change_iface,
2015         .add_key = ieee80211_add_key,
2016         .del_key = ieee80211_del_key,
2017         .get_key = ieee80211_get_key,
2018         .set_default_key = ieee80211_config_default_key,
2019         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2020         .add_beacon = ieee80211_add_beacon,
2021         .set_beacon = ieee80211_set_beacon,
2022         .del_beacon = ieee80211_del_beacon,
2023         .add_station = ieee80211_add_station,
2024         .del_station = ieee80211_del_station,
2025         .change_station = ieee80211_change_station,
2026         .get_station = ieee80211_get_station,
2027         .dump_station = ieee80211_dump_station,
2028         .dump_survey = ieee80211_dump_survey,
2029 #ifdef CONFIG_MAC80211_MESH
2030         .add_mpath = ieee80211_add_mpath,
2031         .del_mpath = ieee80211_del_mpath,
2032         .change_mpath = ieee80211_change_mpath,
2033         .get_mpath = ieee80211_get_mpath,
2034         .dump_mpath = ieee80211_dump_mpath,
2035         .update_mesh_config = ieee80211_update_mesh_config,
2036         .get_mesh_config = ieee80211_get_mesh_config,
2037         .join_mesh = ieee80211_join_mesh,
2038         .leave_mesh = ieee80211_leave_mesh,
2039 #endif
2040         .change_bss = ieee80211_change_bss,
2041         .set_txq_params = ieee80211_set_txq_params,
2042         .set_channel = ieee80211_set_channel,
2043         .suspend = ieee80211_suspend,
2044         .resume = ieee80211_resume,
2045         .scan = ieee80211_scan,
2046         .auth = ieee80211_auth,
2047         .assoc = ieee80211_assoc,
2048         .deauth = ieee80211_deauth,
2049         .disassoc = ieee80211_disassoc,
2050         .join_ibss = ieee80211_join_ibss,
2051         .leave_ibss = ieee80211_leave_ibss,
2052         .set_wiphy_params = ieee80211_set_wiphy_params,
2053         .set_tx_power = ieee80211_set_tx_power,
2054         .get_tx_power = ieee80211_get_tx_power,
2055         .set_wds_peer = ieee80211_set_wds_peer,
2056         .rfkill_poll = ieee80211_rfkill_poll,
2057         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2058         .set_power_mgmt = ieee80211_set_power_mgmt,
2059         .set_bitrate_mask = ieee80211_set_bitrate_mask,
2060         .remain_on_channel = ieee80211_remain_on_channel,
2061         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2062         .mgmt_tx = ieee80211_mgmt_tx,
2063         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2064         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2065         .mgmt_frame_register = ieee80211_mgmt_frame_register,
2066         .set_antenna = ieee80211_set_antenna,
2067         .get_antenna = ieee80211_get_antenna,
2068 };