net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006, 2007 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 <net/net_namespace.h>
  13 #include <linux/rcupdate.h>
  14 #include <net/cfg80211.h>
  15 #include "ieee80211_i.h"
  16 #include "cfg.h"
  17 #include "ieee80211_rate.h"
  18
  19 static enum ieee80211_if_types
  20 nl80211_type_to_mac80211_type(enum nl80211_iftype type)
  21 {
  22         switch (type) {
  23         case NL80211_IFTYPE_UNSPECIFIED:
  24                 return IEEE80211_IF_TYPE_STA;
  25         case NL80211_IFTYPE_ADHOC:
  26                 return IEEE80211_IF_TYPE_IBSS;
  27         case NL80211_IFTYPE_STATION:
  28                 return IEEE80211_IF_TYPE_STA;
  29         case NL80211_IFTYPE_MONITOR:
  30                 return IEEE80211_IF_TYPE_MNTR;
  31         default:
  32                 return IEEE80211_IF_TYPE_INVALID;
  33         }
  34 }
  35
  36 static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
  37                                enum nl80211_iftype type, u32 *flags,
  38                                struct vif_params *params)
  39 {
  40         struct ieee80211_local *local = wiphy_priv(wiphy);
  41         enum ieee80211_if_types itype;
  42         struct net_device *dev;
  43         struct ieee80211_sub_if_data *sdata;
  44         int err;
  45
  46         if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
  47                 return -ENODEV;
  48
  49         itype = nl80211_type_to_mac80211_type(type);
  50         if (itype == IEEE80211_IF_TYPE_INVALID)
  51                 return -EINVAL;
  52
  53         err = ieee80211_if_add(local->mdev, name, &dev, itype);
  54         if (err || itype != IEEE80211_IF_TYPE_MNTR || !flags)
  55                 return err;
  56
  57         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  58         sdata->u.mntr_flags = *flags;
  59         return 0;
  60 }
  61
  62 static int ieee80211_del_iface(struct wiphy *wiphy, int ifindex)
  63 {
  64         struct ieee80211_local *local = wiphy_priv(wiphy);
  65         struct net_device *dev;
  66         char *name;
  67
  68         if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
  69                 return -ENODEV;
  70
  71         /* we're under RTNL */
  72         dev = __dev_get_by_index(&init_net, ifindex);
  73         if (!dev)
  74                 return 0;
  75
  76         name = dev->name;
  77
  78         return ieee80211_if_remove(local->mdev, name, -1);
  79 }
  80
  81 static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex,
  82                                   enum nl80211_iftype type, u32 *flags,
  83                                   struct vif_params *params)
  84 {
  85         struct ieee80211_local *local = wiphy_priv(wiphy);
  86         struct net_device *dev;
  87         enum ieee80211_if_types itype;
  88         struct ieee80211_sub_if_data *sdata;
  89
  90         if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED))
  91                 return -ENODEV;
  92
  93         /* we're under RTNL */
  94         dev = __dev_get_by_index(&init_net, ifindex);
  95         if (!dev)
  96                 return -ENODEV;
  97
  98         if (netif_running(dev))
  99                 return -EBUSY;
 100
 101         itype = nl80211_type_to_mac80211_type(type);
 102         if (itype == IEEE80211_IF_TYPE_INVALID)
 103                 return -EINVAL;
 104
 105         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 106
 107         if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
 108                 return -EOPNOTSUPP;
 109
 110         ieee80211_if_reinit(dev);
 111         ieee80211_if_set_type(dev, itype);
 112
 113         if (sdata->vif.type != IEEE80211_IF_TYPE_MNTR || !flags)
 114                 return 0;
 115
 116         sdata->u.mntr_flags = *flags;
 117         return 0;
 118 }
 119
 120 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 121                              u8 key_idx, u8 *mac_addr,
 122                              struct key_params *params)
 123 {
 124         struct ieee80211_sub_if_data *sdata;
 125         struct sta_info *sta = NULL;
 126         enum ieee80211_key_alg alg;
 127         int ret;
 128         struct ieee80211_key *key;
 129
 130         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 131
 132         switch (params->cipher) {
 133         case WLAN_CIPHER_SUITE_WEP40:
 134         case WLAN_CIPHER_SUITE_WEP104:
 135                 alg = ALG_WEP;
 136                 break;
 137         case WLAN_CIPHER_SUITE_TKIP:
 138                 alg = ALG_TKIP;
 139                 break;
 140         case WLAN_CIPHER_SUITE_CCMP:
 141                 alg = ALG_CCMP;
 142                 break;
 143         default:
 144                 return -EINVAL;
 145         }
 146
 147         key = ieee80211_key_alloc(alg, key_idx, params->key_len, params->key);
 148         if (!key)
 149                 return -ENOMEM;
 150
 151         if (mac_addr) {
 152                 sta = sta_info_get(sdata->local, mac_addr);
 153                 if (!sta) {
 154                         ieee80211_key_free(key);
 155                         return -ENOENT;
 156                 }
 157         }
 158
 159         ieee80211_key_link(key, sdata, sta);
 160
 161         ret = 0;
 162
 163         if (sta)
 164                 sta_info_put(sta);
 165
 166         return ret;
 167 }
 168
 169 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 170                              u8 key_idx, u8 *mac_addr)
 171 {
 172         struct ieee80211_sub_if_data *sdata;
 173         struct sta_info *sta;
 174         int ret;
 175         struct ieee80211_key *key;
 176
 177         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 178
 179         if (mac_addr) {
 180                 sta = sta_info_get(sdata->local, mac_addr);
 181                 if (!sta)
 182                         return -ENOENT;
 183
 184                 ret = 0;
 185                 if (sta->key) {
 186                         key = sta->key;
 187                         ieee80211_key_free(key);
 188                         WARN_ON(sta->key);
 189                 } else
 190                         ret = -ENOENT;
 191
 192                 sta_info_put(sta);
 193                 return ret;
 194         }
 195
 196         if (!sdata->keys[key_idx])
 197                 return -ENOENT;
 198
 199         key = sdata->keys[key_idx];
 200         ieee80211_key_free(key);
 201         WARN_ON(sdata->keys[key_idx]);
 202
 203         return 0;
 204 }
 205
 206 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 207                              u8 key_idx, u8 *mac_addr, void *cookie,
 208                              void (*callback)(void *cookie,
 209                                               struct key_params *params))
 210 {
 211         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 212         struct sta_info *sta = NULL;
 213         u8 seq[6] = {0};
 214         struct key_params params;
 215         struct ieee80211_key *key;
 216         u32 iv32;
 217         u16 iv16;
 218         int err = -ENOENT;
 219
 220         if (mac_addr) {
 221                 sta = sta_info_get(sdata->local, mac_addr);
 222                 if (!sta)
 223                         goto out;
 224
 225                 key = sta->key;
 226         } else
 227                 key = sdata->keys[key_idx];
 228
 229         if (!key)
 230                 goto out;
 231
 232         memset(&params, 0, sizeof(params));
 233
 234         switch (key->conf.alg) {
 235         case ALG_TKIP:
 236                 params.cipher = WLAN_CIPHER_SUITE_TKIP;
 237
 238                 iv32 = key->u.tkip.iv32;
 239                 iv16 = key->u.tkip.iv16;
 240
 241                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 242                     sdata->local->ops->get_tkip_seq)
 243                         sdata->local->ops->get_tkip_seq(
 244                                 local_to_hw(sdata->local),
 245                                 key->conf.hw_key_idx,
 246                                 &iv32, &iv16);
 247
 248                 seq[0] = iv16 & 0xff;
 249                 seq[1] = (iv16 >> 8) & 0xff;
 250                 seq[2] = iv32 & 0xff;
 251                 seq[3] = (iv32 >> 8) & 0xff;
 252                 seq[4] = (iv32 >> 16) & 0xff;
 253                 seq[5] = (iv32 >> 24) & 0xff;
 254                 params.seq = seq;
 255                 params.seq_len = 6;
 256                 break;
 257         case ALG_CCMP:
 258                 params.cipher = WLAN_CIPHER_SUITE_CCMP;
 259                 seq[0] = key->u.ccmp.tx_pn[5];
 260                 seq[1] = key->u.ccmp.tx_pn[4];
 261                 seq[2] = key->u.ccmp.tx_pn[3];
 262                 seq[3] = key->u.ccmp.tx_pn[2];
 263                 seq[4] = key->u.ccmp.tx_pn[1];
 264                 seq[5] = key->u.ccmp.tx_pn[0];
 265                 params.seq = seq;
 266                 params.seq_len = 6;
 267                 break;
 268         case ALG_WEP:
 269                 if (key->conf.keylen == 5)
 270                         params.cipher = WLAN_CIPHER_SUITE_WEP40;
 271                 else
 272                         params.cipher = WLAN_CIPHER_SUITE_WEP104;
 273                 break;
 274         }
 275
 276         params.key = key->conf.key;
 277         params.key_len = key->conf.keylen;
 278
 279         callback(cookie, &params);
 280         err = 0;
 281
 282  out:
 283         if (sta)
 284                 sta_info_put(sta);
 285         return err;
 286 }
 287
 288 static int ieee80211_config_default_key(struct wiphy *wiphy,
 289                                         struct net_device *dev,
 290                                         u8 key_idx)
 291 {
 292         struct ieee80211_sub_if_data *sdata;
 293
 294         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 295         ieee80211_set_default_key(sdata, key_idx);
 296
 297         return 0;
 298 }
 299
 300 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 301                                  u8 *mac, struct station_info *sinfo)
 302 {
 303         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 304         struct sta_info *sta;
 305
 306         sta = sta_info_get(local, mac);
 307         if (!sta)
 308                 return -ENOENT;
 309
 310         /* XXX: verify sta->dev == dev */
 311
 312         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 313                         STATION_INFO_RX_BYTES |
 314                         STATION_INFO_TX_BYTES;
 315
 316         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 317         sinfo->rx_bytes = sta->rx_bytes;
 318         sinfo->tx_bytes = sta->tx_bytes;
 319
 320         sta_info_put(sta);
 321
 322         return 0;
 323 }
 324
 325 /*
 326  * This handles both adding a beacon and setting new beacon info
 327  */
 328 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 329                                    struct beacon_parameters *params)
 330 {
 331         struct beacon_data *new, *old;
 332         int new_head_len, new_tail_len;
 333         int size;
 334         int err = -EINVAL;
 335
 336         old = sdata->u.ap.beacon;
 337
 338         /* head must not be zero-length */
 339         if (params->head && !params->head_len)
 340                 return -EINVAL;
 341
 342         /*
 343          * This is a kludge. beacon interval should really be part
 344          * of the beacon information.
 345          */
 346         if (params->interval) {
 347                 sdata->local->hw.conf.beacon_int = params->interval;
 348                 if (ieee80211_hw_config(sdata->local))
 349                         return -EINVAL;
 350                 /*
 351                  * We updated some parameter so if below bails out
 352                  * it's not an error.
 353                  */
 354                 err = 0;
 355         }
 356
 357         /* Need to have a beacon head if we don't have one yet */
 358         if (!params->head && !old)
 359                 return err;
 360
 361         /* sorry, no way to start beaconing without dtim period */
 362         if (!params->dtim_period && !old)
 363                 return err;
 364
 365         /* new or old head? */
 366         if (params->head)
 367                 new_head_len = params->head_len;
 368         else
 369                 new_head_len = old->head_len;
 370
 371         /* new or old tail? */
 372         if (params->tail || !old)
 373                 /* params->tail_len will be zero for !params->tail */
 374                 new_tail_len = params->tail_len;
 375         else
 376                 new_tail_len = old->tail_len;
 377
 378         size = sizeof(*new) + new_head_len + new_tail_len;
 379
 380         new = kzalloc(size, GFP_KERNEL);
 381         if (!new)
 382                 return -ENOMEM;
 383
 384         /* start filling the new info now */
 385
 386         /* new or old dtim period? */
 387         if (params->dtim_period)
 388                 new->dtim_period = params->dtim_period;
 389         else
 390                 new->dtim_period = old->dtim_period;
 391
 392         /*
 393          * pointers go into the block we allocated,
 394          * memory is | beacon_data | head | tail |
 395          */
 396         new->head = ((u8 *) new) + sizeof(*new);
 397         new->tail = new->head + new_head_len;
 398         new->head_len = new_head_len;
 399         new->tail_len = new_tail_len;
 400
 401         /* copy in head */
 402         if (params->head)
 403                 memcpy(new->head, params->head, new_head_len);
 404         else
 405                 memcpy(new->head, old->head, new_head_len);
 406
 407         /* copy in optional tail */
 408         if (params->tail)
 409                 memcpy(new->tail, params->tail, new_tail_len);
 410         else
 411                 if (old)
 412                         memcpy(new->tail, old->tail, new_tail_len);
 413
 414         rcu_assign_pointer(sdata->u.ap.beacon, new);
 415
 416         synchronize_rcu();
 417
 418         kfree(old);
 419
 420         return ieee80211_if_config_beacon(sdata->dev);
 421 }
 422
 423 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 424                                 struct beacon_parameters *params)
 425 {
 426         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 427         struct beacon_data *old;
 428
 429         if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
 430                 return -EINVAL;
 431
 432         old = sdata->u.ap.beacon;
 433
 434         if (old)
 435                 return -EALREADY;
 436
 437         return ieee80211_config_beacon(sdata, params);
 438 }
 439
 440 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 441                                 struct beacon_parameters *params)
 442 {
 443         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 444         struct beacon_data *old;
 445
 446         if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
 447                 return -EINVAL;
 448
 449         old = sdata->u.ap.beacon;
 450
 451         if (!old)
 452                 return -ENOENT;
 453
 454         return ieee80211_config_beacon(sdata, params);
 455 }
 456
 457 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 458 {
 459         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 460         struct beacon_data *old;
 461
 462         if (sdata->vif.type != IEEE80211_IF_TYPE_AP)
 463                 return -EINVAL;
 464
 465         old = sdata->u.ap.beacon;
 466
 467         if (!old)
 468                 return -ENOENT;
 469
 470         rcu_assign_pointer(sdata->u.ap.beacon, NULL);
 471         synchronize_rcu();
 472         kfree(old);
 473
 474         return ieee80211_if_config_beacon(dev);
 475 }
 476
 477 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 478 struct iapp_layer2_update {
 479         u8 da[ETH_ALEN];        /* broadcast */
 480         u8 sa[ETH_ALEN];        /* STA addr */
 481         __be16 len;             /* 6 */
 482         u8 dsap;                /* 0 */
 483         u8 ssap;                /* 0 */
 484         u8 control;
 485         u8 xid_info[3];
 486 } __attribute__ ((packed));
 487
 488 static void ieee80211_send_layer2_update(struct sta_info *sta)
 489 {
 490         struct iapp_layer2_update *msg;
 491         struct sk_buff *skb;
 492
 493         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 494          * bridge devices */
 495
 496         skb = dev_alloc_skb(sizeof(*msg));
 497         if (!skb)
 498                 return;
 499         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 500
 501         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 502          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 503
 504         memset(msg->da, 0xff, ETH_ALEN);
 505         memcpy(msg->sa, sta->addr, ETH_ALEN);
 506         msg->len = htons(6);
 507         msg->dsap = 0;
 508         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 509         msg->control = 0xaf;    /* XID response lsb.1111F101.
 510                                  * F=0 (no poll command; unsolicited frame) */
 511         msg->xid_info[0] = 0x81;        /* XID format identifier */
 512         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 513         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 514
 515         skb->dev = sta->dev;
 516         skb->protocol = eth_type_trans(skb, sta->dev);
 517         memset(skb->cb, 0, sizeof(skb->cb));
 518         netif_rx(skb);
 519 }
 520
 521 static void sta_apply_parameters(struct ieee80211_local *local,
 522                                  struct sta_info *sta,
 523                                  struct station_parameters *params)
 524 {
 525         u32 rates;
 526         int i, j;
 527         struct ieee80211_supported_band *sband;
 528
 529         if (params->station_flags & STATION_FLAG_CHANGED) {
 530                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 531                 if (params->station_flags & STATION_FLAG_AUTHORIZED)
 532                         sta->flags |= WLAN_STA_AUTHORIZED;
 533
 534                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 535                 if (params->station_flags & STATION_FLAG_SHORT_PREAMBLE)
 536                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 537
 538                 sta->flags &= ~WLAN_STA_WME;
 539                 if (params->station_flags & STATION_FLAG_WME)
 540                         sta->flags |= WLAN_STA_WME;
 541         }
 542
 543         if (params->aid) {
 544                 sta->aid = params->aid;
 545                 if (sta->aid > IEEE80211_MAX_AID)
 546                         sta->aid = 0; /* XXX: should this be an error? */
 547         }
 548
 549         if (params->listen_interval >= 0)
 550                 sta->listen_interval = params->listen_interval;
 551
 552         if (params->supported_rates) {
 553                 rates = 0;
 554                 sband = local->hw.wiphy->bands[local->oper_channel->band];
 555
 556                 for (i = 0; i < params->supported_rates_len; i++) {
 557                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 558                         for (j = 0; j < sband->n_bitrates; j++) {
 559                                 if (sband->bitrates[j].bitrate == rate)
 560                                         rates |= BIT(j);
 561                         }
 562                 }
 563                 sta->supp_rates[local->oper_channel->band] = rates;
 564         }
 565 }
 566
 567 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 568                                  u8 *mac, struct station_parameters *params)
 569 {
 570         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 571         struct sta_info *sta;
 572         struct ieee80211_sub_if_data *sdata;
 573
 574         /* Prevent a race with changing the rate control algorithm */
 575         if (!netif_running(dev))
 576                 return -ENETDOWN;
 577
 578         if (params->vlan) {
 579                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 580
 581                 if (sdata->vif.type != IEEE80211_IF_TYPE_VLAN ||
 582                     sdata->vif.type != IEEE80211_IF_TYPE_AP)
 583                         return -EINVAL;
 584         } else
 585                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 586
 587         sta = sta_info_add(local, dev, mac, GFP_KERNEL);
 588         if (IS_ERR(sta))
 589                 return PTR_ERR(sta);
 590
 591         sta->dev = sdata->dev;
 592         if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN ||
 593             sdata->vif.type == IEEE80211_IF_TYPE_AP)
 594                 ieee80211_send_layer2_update(sta);
 595
 596         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 597
 598         sta_apply_parameters(local, sta, params);
 599
 600         rate_control_rate_init(sta, local);
 601
 602         sta_info_put(sta);
 603
 604         return 0;
 605 }
 606
 607 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 608                                  u8 *mac)
 609 {
 610         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 611         struct sta_info *sta;
 612
 613         if (mac) {
 614                 /* XXX: get sta belonging to dev */
 615                 sta = sta_info_get(local, mac);
 616                 if (!sta)
 617                         return -ENOENT;
 618
 619                 sta_info_free(sta);
 620                 sta_info_put(sta);
 621         } else
 622                 sta_info_flush(local, dev);
 623
 624         return 0;
 625 }
 626
 627 static int ieee80211_change_station(struct wiphy *wiphy,
 628                                     struct net_device *dev,
 629                                     u8 *mac,
 630                                     struct station_parameters *params)
 631 {
 632         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 633         struct sta_info *sta;
 634         struct ieee80211_sub_if_data *vlansdata;
 635
 636         /* XXX: get sta belonging to dev */
 637         sta = sta_info_get(local, mac);
 638         if (!sta)
 639                 return -ENOENT;
 640
 641         if (params->vlan && params->vlan != sta->dev) {
 642                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 643
 644                 if (vlansdata->vif.type != IEEE80211_IF_TYPE_VLAN ||
 645                     vlansdata->vif.type != IEEE80211_IF_TYPE_AP)
 646                         return -EINVAL;
 647
 648                 sta->dev = params->vlan;
 649                 ieee80211_send_layer2_update(sta);
 650         }
 651
 652         sta_apply_parameters(local, sta, params);
 653
 654         sta_info_put(sta);
 655
 656         return 0;
 657 }
 658
 659 struct cfg80211_ops mac80211_config_ops = {
 660         .add_virtual_intf = ieee80211_add_iface,
 661         .del_virtual_intf = ieee80211_del_iface,
 662         .change_virtual_intf = ieee80211_change_iface,
 663         .add_key = ieee80211_add_key,
 664         .del_key = ieee80211_del_key,
 665         .get_key = ieee80211_get_key,
 666         .set_default_key = ieee80211_config_default_key,
 667         .add_beacon = ieee80211_add_beacon,
 668         .set_beacon = ieee80211_set_beacon,
 669         .del_beacon = ieee80211_del_beacon,
 670         .add_station = ieee80211_add_station,
 671         .del_station = ieee80211_del_station,
 672         .change_station = ieee80211_change_station,
 673         .get_station = ieee80211_get_station,
 674 };