SAFE public projects git trees. - safe/jmp/linux-2.6/blob - net/wireless/wext-compat.c

   1 /*
   2  * cfg80211 - wext compat code
   3  *
   4  * This is temporary code until all wireless functionality is migrated
   5  * into cfg80211, when that happens all the exports here go away and
   6  * we directly assign the wireless handlers of wireless interfaces.
   7  *
   8  * Copyright 2008-2009  Johannes Berg <johannes@sipsolutions.net>
   9  */
  10
  11 #include <linux/wireless.h>
  12 #include <linux/nl80211.h>
  13 #include <linux/if_arp.h>
  14 #include <linux/etherdevice.h>
  15 #include <net/iw_handler.h>
  16 #include <net/cfg80211.h>
  17 #include "wext-compat.h"
  18 #include "core.h"
  19
  20 int cfg80211_wext_giwname(struct net_device *dev,
  21                           struct iw_request_info *info,
  22                           char *name, char *extra)
  23 {
  24         struct wireless_dev *wdev = dev->ieee80211_ptr;
  25         struct ieee80211_supported_band *sband;
  26         bool is_ht = false, is_a = false, is_b = false, is_g = false;
  27
  28         if (!wdev)
  29                 return -EOPNOTSUPP;
  30
  31         sband = wdev->wiphy->bands[IEEE80211_BAND_5GHZ];
  32         if (sband) {
  33                 is_a = true;
  34                 is_ht |= sband->ht_cap.ht_supported;
  35         }
  36
  37         sband = wdev->wiphy->bands[IEEE80211_BAND_2GHZ];
  38         if (sband) {
  39                 int i;
  40                 /* Check for mandatory rates */
  41                 for (i = 0; i < sband->n_bitrates; i++) {
  42                         if (sband->bitrates[i].bitrate == 10)
  43                                 is_b = true;
  44                         if (sband->bitrates[i].bitrate == 60)
  45                                 is_g = true;
  46                 }
  47                 is_ht |= sband->ht_cap.ht_supported;
  48         }
  49
  50         strcpy(name, "IEEE 802.11");
  51         if (is_a)
  52                 strcat(name, "a");
  53         if (is_b)
  54                 strcat(name, "b");
  55         if (is_g)
  56                 strcat(name, "g");
  57         if (is_ht)
  58                 strcat(name, "n");
  59
  60         return 0;
  61 }
  62 EXPORT_SYMBOL_GPL(cfg80211_wext_giwname);
  63
  64 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
  65                           u32 *mode, char *extra)
  66 {
  67         struct wireless_dev *wdev = dev->ieee80211_ptr;
  68         struct cfg80211_registered_device *rdev;
  69         struct vif_params vifparams;
  70         enum nl80211_iftype type;
  71         int ret;
  72
  73         if (!wdev)
  74                 return -EOPNOTSUPP;
  75
  76         rdev = wiphy_to_dev(wdev->wiphy);
  77
  78         if (!rdev->ops->change_virtual_intf)
  79                 return -EOPNOTSUPP;
  80
  81         /* don't support changing VLANs, you just re-create them */
  82         if (wdev->iftype == NL80211_IFTYPE_AP_VLAN)
  83                 return -EOPNOTSUPP;
  84
  85         switch (*mode) {
  86         case IW_MODE_INFRA:
  87                 type = NL80211_IFTYPE_STATION;
  88                 break;
  89         case IW_MODE_ADHOC:
  90                 type = NL80211_IFTYPE_ADHOC;
  91                 break;
  92         case IW_MODE_REPEAT:
  93                 type = NL80211_IFTYPE_WDS;
  94                 break;
  95         case IW_MODE_MONITOR:
  96                 type = NL80211_IFTYPE_MONITOR;
  97                 break;
  98         default:
  99                 return -EINVAL;
 100         }
 101
 102         if (type == wdev->iftype)
 103                 return 0;
 104
 105         memset(&vifparams, 0, sizeof(vifparams));
 106
 107         ret = rdev->ops->change_virtual_intf(wdev->wiphy, dev, type,
 108                                              NULL, &vifparams);
 109         WARN_ON(!ret && wdev->iftype != type);
 110
 111         return ret;
 112 }
 113 EXPORT_SYMBOL_GPL(cfg80211_wext_siwmode);
 114
 115 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
 116                           u32 *mode, char *extra)
 117 {
 118         struct wireless_dev *wdev = dev->ieee80211_ptr;
 119
 120         if (!wdev)
 121                 return -EOPNOTSUPP;
 122
 123         switch (wdev->iftype) {
 124         case NL80211_IFTYPE_AP:
 125                 *mode = IW_MODE_MASTER;
 126                 break;
 127         case NL80211_IFTYPE_STATION:
 128                 *mode = IW_MODE_INFRA;
 129                 break;
 130         case NL80211_IFTYPE_ADHOC:
 131                 *mode = IW_MODE_ADHOC;
 132                 break;
 133         case NL80211_IFTYPE_MONITOR:
 134                 *mode = IW_MODE_MONITOR;
 135                 break;
 136         case NL80211_IFTYPE_WDS:
 137                 *mode = IW_MODE_REPEAT;
 138                 break;
 139         case NL80211_IFTYPE_AP_VLAN:
 140                 *mode = IW_MODE_SECOND;         /* FIXME */
 141                 break;
 142         default:
 143                 *mode = IW_MODE_AUTO;
 144                 break;
 145         }
 146         return 0;
 147 }
 148 EXPORT_SYMBOL_GPL(cfg80211_wext_giwmode);
 149
 150
 151 int cfg80211_wext_giwrange(struct net_device *dev,
 152                            struct iw_request_info *info,
 153                            struct iw_point *data, char *extra)
 154 {
 155         struct wireless_dev *wdev = dev->ieee80211_ptr;
 156         struct iw_range *range = (struct iw_range *) extra;
 157         enum ieee80211_band band;
 158         int i, c = 0;
 159
 160         if (!wdev)
 161                 return -EOPNOTSUPP;
 162
 163         data->length = sizeof(struct iw_range);
 164         memset(range, 0, sizeof(struct iw_range));
 165
 166         range->we_version_compiled = WIRELESS_EXT;
 167         range->we_version_source = 21;
 168         range->retry_capa = IW_RETRY_LIMIT;
 169         range->retry_flags = IW_RETRY_LIMIT;
 170         range->min_retry = 0;
 171         range->max_retry = 255;
 172         range->min_rts = 0;
 173         range->max_rts = 2347;
 174         range->min_frag = 256;
 175         range->max_frag = 2346;
 176
 177         range->max_encoding_tokens = 4;
 178
 179         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
 180
 181         switch (wdev->wiphy->signal_type) {
 182         case CFG80211_SIGNAL_TYPE_NONE:
 183                 break;
 184         case CFG80211_SIGNAL_TYPE_MBM:
 185                 range->max_qual.level = -110;
 186                 range->max_qual.qual = 70;
 187                 range->avg_qual.qual = 35;
 188                 range->max_qual.updated |= IW_QUAL_DBM;
 189                 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 190                 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 191                 break;
 192         case CFG80211_SIGNAL_TYPE_UNSPEC:
 193                 range->max_qual.level = 100;
 194                 range->max_qual.qual = 100;
 195                 range->avg_qual.qual = 50;
 196                 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 197                 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 198                 break;
 199         }
 200
 201         range->avg_qual.level = range->max_qual.level / 2;
 202         range->avg_qual.noise = range->max_qual.noise / 2;
 203         range->avg_qual.updated = range->max_qual.updated;
 204
 205         for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) {
 206                 switch (wdev->wiphy->cipher_suites[i]) {
 207                 case WLAN_CIPHER_SUITE_TKIP:
 208                         range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
 209                                             IW_ENC_CAPA_WPA);
 210                         break;
 211
 212                 case WLAN_CIPHER_SUITE_CCMP:
 213                         range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
 214                                             IW_ENC_CAPA_WPA2);
 215                         break;
 216
 217                 case WLAN_CIPHER_SUITE_WEP40:
 218                         range->encoding_size[range->num_encoding_sizes++] =
 219                                 WLAN_KEY_LEN_WEP40;
 220                         break;
 221
 222                 case WLAN_CIPHER_SUITE_WEP104:
 223                         range->encoding_size[range->num_encoding_sizes++] =
 224                                 WLAN_KEY_LEN_WEP104;
 225                         break;
 226                 }
 227         }
 228
 229         for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
 230                 struct ieee80211_supported_band *sband;
 231
 232                 sband = wdev->wiphy->bands[band];
 233
 234                 if (!sband)
 235                         continue;
 236
 237                 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
 238                         struct ieee80211_channel *chan = &sband->channels[i];
 239
 240                         if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
 241                                 range->freq[c].i =
 242                                         ieee80211_frequency_to_channel(
 243                                                 chan->center_freq);
 244                                 range->freq[c].m = chan->center_freq;
 245                                 range->freq[c].e = 6;
 246                                 c++;
 247                         }
 248                 }
 249         }
 250         range->num_channels = c;
 251         range->num_frequency = c;
 252
 253         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 254         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 255         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
 256
 257         if (wdev->wiphy->max_scan_ssids > 0)
 258                 range->scan_capa |= IW_SCAN_CAPA_ESSID;
 259
 260         return 0;
 261 }
 262 EXPORT_SYMBOL_GPL(cfg80211_wext_giwrange);
 263
 264
 265 /**
 266  * cfg80211_wext_freq - get wext frequency for non-"auto"
 267  * @wiphy: the wiphy
 268  * @freq: the wext freq encoding
 269  *
 270  * Returns a channel, %NULL for auto, or an ERR_PTR for errors!
 271  */
 272 struct ieee80211_channel *cfg80211_wext_freq(struct wiphy *wiphy,
 273                                              struct iw_freq *freq)
 274 {
 275         struct ieee80211_channel *chan;
 276         int f;
 277
 278         /*
 279          * Parse frequency - return NULL for auto and
 280          * -EINVAL for impossible things.
 281          */
 282         if (freq->e == 0) {
 283                 if (freq->m < 0)
 284                         return NULL;
 285                 f = ieee80211_channel_to_frequency(freq->m);
 286         } else {
 287                 int i, div = 1000000;
 288                 for (i = 0; i < freq->e; i++)
 289                         div /= 10;
 290                 if (div <= 0)
 291                         return ERR_PTR(-EINVAL);
 292                 f = freq->m / div;
 293         }
 294
 295         /*
 296          * Look up channel struct and return -EINVAL when
 297          * it cannot be found.
 298          */
 299         chan = ieee80211_get_channel(wiphy, f);
 300         if (!chan)
 301                 return ERR_PTR(-EINVAL);
 302         return chan;
 303 }
 304
 305 int cfg80211_wext_siwrts(struct net_device *dev,
 306                          struct iw_request_info *info,
 307                          struct iw_param *rts, char *extra)
 308 {
 309         struct wireless_dev *wdev = dev->ieee80211_ptr;
 310         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 311         u32 orts = wdev->wiphy->rts_threshold;
 312         int err;
 313
 314         if (rts->disabled || !rts->fixed)
 315                 wdev->wiphy->rts_threshold = (u32) -1;
 316         else if (rts->value < 0)
 317                 return -EINVAL;
 318         else
 319                 wdev->wiphy->rts_threshold = rts->value;
 320
 321         err = rdev->ops->set_wiphy_params(wdev->wiphy,
 322                                           WIPHY_PARAM_RTS_THRESHOLD);
 323         if (err)
 324                 wdev->wiphy->rts_threshold = orts;
 325
 326         return err;
 327 }
 328 EXPORT_SYMBOL_GPL(cfg80211_wext_siwrts);
 329
 330 int cfg80211_wext_giwrts(struct net_device *dev,
 331                          struct iw_request_info *info,
 332                          struct iw_param *rts, char *extra)
 333 {
 334         struct wireless_dev *wdev = dev->ieee80211_ptr;
 335
 336         rts->value = wdev->wiphy->rts_threshold;
 337         rts->disabled = rts->value == (u32) -1;
 338         rts->fixed = 1;
 339
 340         return 0;
 341 }
 342 EXPORT_SYMBOL_GPL(cfg80211_wext_giwrts);
 343
 344 int cfg80211_wext_siwfrag(struct net_device *dev,
 345                           struct iw_request_info *info,
 346                           struct iw_param *frag, char *extra)
 347 {
 348         struct wireless_dev *wdev = dev->ieee80211_ptr;
 349         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 350         u32 ofrag = wdev->wiphy->frag_threshold;
 351         int err;
 352
 353         if (frag->disabled || !frag->fixed)
 354                 wdev->wiphy->frag_threshold = (u32) -1;
 355         else if (frag->value < 256)
 356                 return -EINVAL;
 357         else {
 358                 /* Fragment length must be even, so strip LSB. */
 359                 wdev->wiphy->frag_threshold = frag->value & ~0x1;
 360         }
 361
 362         err = rdev->ops->set_wiphy_params(wdev->wiphy,
 363                                           WIPHY_PARAM_FRAG_THRESHOLD);
 364         if (err)
 365                 wdev->wiphy->frag_threshold = ofrag;
 366
 367         return err;
 368 }
 369 EXPORT_SYMBOL_GPL(cfg80211_wext_siwfrag);
 370
 371 int cfg80211_wext_giwfrag(struct net_device *dev,
 372                           struct iw_request_info *info,
 373                           struct iw_param *frag, char *extra)
 374 {
 375         struct wireless_dev *wdev = dev->ieee80211_ptr;
 376
 377         frag->value = wdev->wiphy->frag_threshold;
 378         frag->disabled = frag->value == (u32) -1;
 379         frag->fixed = 1;
 380
 381         return 0;
 382 }
 383 EXPORT_SYMBOL_GPL(cfg80211_wext_giwfrag);
 384
 385 int cfg80211_wext_siwretry(struct net_device *dev,
 386                            struct iw_request_info *info,
 387                            struct iw_param *retry, char *extra)
 388 {
 389         struct wireless_dev *wdev = dev->ieee80211_ptr;
 390         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 391         u32 changed = 0;
 392         u8 olong = wdev->wiphy->retry_long;
 393         u8 oshort = wdev->wiphy->retry_short;
 394         int err;
 395
 396         if (retry->disabled ||
 397             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 398                 return -EINVAL;
 399
 400         if (retry->flags & IW_RETRY_LONG) {
 401                 wdev->wiphy->retry_long = retry->value;
 402                 changed |= WIPHY_PARAM_RETRY_LONG;
 403         } else if (retry->flags & IW_RETRY_SHORT) {
 404                 wdev->wiphy->retry_short = retry->value;
 405                 changed |= WIPHY_PARAM_RETRY_SHORT;
 406         } else {
 407                 wdev->wiphy->retry_short = retry->value;
 408                 wdev->wiphy->retry_long = retry->value;
 409                 changed |= WIPHY_PARAM_RETRY_LONG;
 410                 changed |= WIPHY_PARAM_RETRY_SHORT;
 411         }
 412
 413         if (!changed)
 414                 return 0;
 415
 416         err = rdev->ops->set_wiphy_params(wdev->wiphy, changed);
 417         if (err) {
 418                 wdev->wiphy->retry_short = oshort;
 419                 wdev->wiphy->retry_long = olong;
 420         }
 421
 422         return err;
 423 }
 424 EXPORT_SYMBOL_GPL(cfg80211_wext_siwretry);
 425
 426 int cfg80211_wext_giwretry(struct net_device *dev,
 427                            struct iw_request_info *info,
 428                            struct iw_param *retry, char *extra)
 429 {
 430         struct wireless_dev *wdev = dev->ieee80211_ptr;
 431
 432         retry->disabled = 0;
 433
 434         if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
 435                 /*
 436                  * First return short value, iwconfig will ask long value
 437                  * later if needed
 438                  */
 439                 retry->flags |= IW_RETRY_LIMIT;
 440                 retry->value = wdev->wiphy->retry_short;
 441                 if (wdev->wiphy->retry_long != wdev->wiphy->retry_short)
 442                         retry->flags |= IW_RETRY_LONG;
 443
 444                 return 0;
 445         }
 446
 447         if (retry->flags & IW_RETRY_LONG) {
 448                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
 449                 retry->value = wdev->wiphy->retry_long;
 450         }
 451
 452         return 0;
 453 }
 454 EXPORT_SYMBOL_GPL(cfg80211_wext_giwretry);
 455
 456 static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 457                                      struct net_device *dev, const u8 *addr,
 458                                      bool remove, bool tx_key, int idx,
 459                                      struct key_params *params)
 460 {
 461         struct wireless_dev *wdev = dev->ieee80211_ptr;
 462         int err, i;
 463
 464         if (!wdev->wext.keys) {
 465                 wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys),
 466                                               GFP_KERNEL);
 467                 if (!wdev->wext.keys)
 468                         return -ENOMEM;
 469                 for (i = 0; i < 6; i++)
 470                         wdev->wext.keys->params[i].key =
 471                                 wdev->wext.keys->data[i];
 472         }
 473
 474         if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
 475             wdev->iftype != NL80211_IFTYPE_STATION)
 476                 return -EOPNOTSUPP;
 477
 478         if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 479                 if (!wdev->current_bss)
 480                         return -ENOLINK;
 481
 482                 if (!rdev->ops->set_default_mgmt_key)
 483                         return -EOPNOTSUPP;
 484
 485                 if (idx < 4 || idx > 5)
 486                         return -EINVAL;
 487         } else if (idx < 0 || idx > 3)
 488                 return -EINVAL;
 489
 490         if (remove) {
 491                 err = 0;
 492                 if (wdev->current_bss)
 493                         err = rdev->ops->del_key(&rdev->wiphy, dev, idx, addr);
 494                 if (!err) {
 495                         if (!addr) {
 496                                 wdev->wext.keys->params[idx].key_len = 0;
 497                                 wdev->wext.keys->params[idx].cipher = 0;
 498                         }
 499                         if (idx == wdev->wext.default_key)
 500                                 wdev->wext.default_key = -1;
 501                         else if (idx == wdev->wext.default_mgmt_key)
 502                                 wdev->wext.default_mgmt_key = -1;
 503                 }
 504                 /*
 505                  * Applications using wireless extensions expect to be
 506                  * able to delete keys that don't exist, so allow that.
 507                  */
 508                 if (err == -ENOENT)
 509                         return 0;
 510
 511                 return err;
 512         }
 513
 514         if (addr)
 515                 tx_key = false;
 516
 517         if (cfg80211_validate_key_settings(rdev, params, idx, addr))
 518                 return -EINVAL;
 519
 520         err = 0;
 521         if (wdev->current_bss)
 522                 err = rdev->ops->add_key(&rdev->wiphy, dev, idx, addr, params);
 523         if (err)
 524                 return err;
 525
 526         if (!addr) {
 527                 wdev->wext.keys->params[idx] = *params;
 528                 memcpy(wdev->wext.keys->data[idx],
 529                         params->key, params->key_len);
 530                 wdev->wext.keys->params[idx].key =
 531                         wdev->wext.keys->data[idx];
 532         }
 533
 534         if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 535              params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 536             (tx_key || (!addr && wdev->wext.default_key == -1))) {
 537                 if (wdev->current_bss)
 538                         err = rdev->ops->set_default_key(&rdev->wiphy,
 539                                                          dev, idx);
 540                 if (!err)
 541                         wdev->wext.default_key = idx;
 542                 return err;
 543         }
 544
 545         if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
 546             (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
 547                 if (wdev->current_bss)
 548                         err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
 549                                                               dev, idx);
 550                 if (!err)
 551                         wdev->wext.default_mgmt_key = idx;
 552                 return err;
 553         }
 554
 555         return 0;
 556 }
 557
 558 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 559                                    struct net_device *dev, const u8 *addr,
 560                                    bool remove, bool tx_key, int idx,
 561                                    struct key_params *params)
 562 {
 563         int err;
 564
 565         wdev_lock(dev->ieee80211_ptr);
 566         err = __cfg80211_set_encryption(rdev, dev, addr, remove,
 567                                         tx_key, idx, params);
 568         wdev_unlock(dev->ieee80211_ptr);
 569
 570         return err;
 571 }
 572
 573 int cfg80211_wext_siwencode(struct net_device *dev,
 574                             struct iw_request_info *info,
 575                             struct iw_point *erq, char *keybuf)
 576 {
 577         struct wireless_dev *wdev = dev->ieee80211_ptr;
 578         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 579         int idx, err;
 580         bool remove = false;
 581         struct key_params params;
 582
 583         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 584             wdev->iftype != NL80211_IFTYPE_ADHOC)
 585                 return -EOPNOTSUPP;
 586
 587         /* no use -- only MFP (set_default_mgmt_key) is optional */
 588         if (!rdev->ops->del_key ||
 589             !rdev->ops->add_key ||
 590             !rdev->ops->set_default_key)
 591                 return -EOPNOTSUPP;
 592
 593         idx = erq->flags & IW_ENCODE_INDEX;
 594         if (idx == 0) {
 595                 idx = wdev->wext.default_key;
 596                 if (idx < 0)
 597                         idx = 0;
 598         } else if (idx < 1 || idx > 4)
 599                 return -EINVAL;
 600         else
 601                 idx--;
 602
 603         if (erq->flags & IW_ENCODE_DISABLED)
 604                 remove = true;
 605         else if (erq->length == 0) {
 606                 /* No key data - just set the default TX key index */
 607                 err = 0;
 608                 wdev_lock(wdev);
 609                 if (wdev->current_bss)
 610                         err = rdev->ops->set_default_key(&rdev->wiphy,
 611                                                          dev, idx);
 612                 if (!err)
 613                         wdev->wext.default_key = idx;
 614                 wdev_unlock(wdev);
 615                 return err;
 616         }
 617
 618         memset(&params, 0, sizeof(params));
 619         params.key = keybuf;
 620         params.key_len = erq->length;
 621         if (erq->length == 5)
 622                 params.cipher = WLAN_CIPHER_SUITE_WEP40;
 623         else if (erq->length == 13)
 624                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
 625         else if (!remove)
 626                 return -EINVAL;
 627
 628         return cfg80211_set_encryption(rdev, dev, NULL, remove,
 629                                        wdev->wext.default_key == -1,
 630                                        idx, &params);
 631 }
 632 EXPORT_SYMBOL_GPL(cfg80211_wext_siwencode);
 633
 634 int cfg80211_wext_siwencodeext(struct net_device *dev,
 635                                struct iw_request_info *info,
 636                                struct iw_point *erq, char *extra)
 637 {
 638         struct wireless_dev *wdev = dev->ieee80211_ptr;
 639         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 640         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
 641         const u8 *addr;
 642         int idx;
 643         bool remove = false;
 644         struct key_params params;
 645         u32 cipher;
 646
 647         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 648             wdev->iftype != NL80211_IFTYPE_ADHOC)
 649                 return -EOPNOTSUPP;
 650
 651         /* no use -- only MFP (set_default_mgmt_key) is optional */
 652         if (!rdev->ops->del_key ||
 653             !rdev->ops->add_key ||
 654             !rdev->ops->set_default_key)
 655                 return -EOPNOTSUPP;
 656
 657         switch (ext->alg) {
 658         case IW_ENCODE_ALG_NONE:
 659                 remove = true;
 660                 cipher = 0;
 661                 break;
 662         case IW_ENCODE_ALG_WEP:
 663                 if (ext->key_len == 5)
 664                         cipher = WLAN_CIPHER_SUITE_WEP40;
 665                 else if (ext->key_len == 13)
 666                         cipher = WLAN_CIPHER_SUITE_WEP104;
 667                 else
 668                         return -EINVAL;
 669                 break;
 670         case IW_ENCODE_ALG_TKIP:
 671                 cipher = WLAN_CIPHER_SUITE_TKIP;
 672                 break;
 673         case IW_ENCODE_ALG_CCMP:
 674                 cipher = WLAN_CIPHER_SUITE_CCMP;
 675                 break;
 676         case IW_ENCODE_ALG_AES_CMAC:
 677                 cipher = WLAN_CIPHER_SUITE_AES_CMAC;
 678                 break;
 679         default:
 680                 return -EOPNOTSUPP;
 681         }
 682
 683         if (erq->flags & IW_ENCODE_DISABLED)
 684                 remove = true;
 685
 686         idx = erq->flags & IW_ENCODE_INDEX;
 687         if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 688                 if (idx < 4 || idx > 5) {
 689                         idx = wdev->wext.default_mgmt_key;
 690                         if (idx < 0)
 691                                 return -EINVAL;
 692                 } else
 693                         idx--;
 694         } else {
 695                 if (idx < 1 || idx > 4) {
 696                         idx = wdev->wext.default_key;
 697                         if (idx < 0)
 698                                 return -EINVAL;
 699                 } else
 700                         idx--;
 701         }
 702
 703         addr = ext->addr.sa_data;
 704         if (is_broadcast_ether_addr(addr))
 705                 addr = NULL;
 706
 707         memset(&params, 0, sizeof(params));
 708         params.key = ext->key;
 709         params.key_len = ext->key_len;
 710         params.cipher = cipher;
 711
 712         if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
 713                 params.seq = ext->rx_seq;
 714                 params.seq_len = 6;
 715         }
 716
 717         return cfg80211_set_encryption(
 718                         rdev, dev, addr, remove,
 719                         ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
 720                         idx, &params);
 721 }
 722 EXPORT_SYMBOL_GPL(cfg80211_wext_siwencodeext);
 723
 724 int cfg80211_wext_giwencode(struct net_device *dev,
 725                             struct iw_request_info *info,
 726                             struct iw_point *erq, char *keybuf)
 727 {
 728         struct wireless_dev *wdev = dev->ieee80211_ptr;
 729         int idx;
 730
 731         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 732             wdev->iftype != NL80211_IFTYPE_ADHOC)
 733                 return -EOPNOTSUPP;
 734
 735         idx = erq->flags & IW_ENCODE_INDEX;
 736         if (idx == 0) {
 737                 idx = wdev->wext.default_key;
 738                 if (idx < 0)
 739                         idx = 0;
 740         } else if (idx < 1 || idx > 4)
 741                 return -EINVAL;
 742         else
 743                 idx--;
 744
 745         erq->flags = idx + 1;
 746
 747         if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
 748                 erq->flags |= IW_ENCODE_DISABLED;
 749                 erq->length = 0;
 750                 return 0;
 751         }
 752
 753         erq->length = min_t(size_t, erq->length,
 754                             wdev->wext.keys->params[idx].key_len);
 755         memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
 756         erq->flags |= IW_ENCODE_ENABLED;
 757
 758         return 0;
 759 }
 760 EXPORT_SYMBOL_GPL(cfg80211_wext_giwencode);
 761
 762 int cfg80211_wext_siwfreq(struct net_device *dev,
 763                           struct iw_request_info *info,
 764                           struct iw_freq *freq, char *extra)
 765 {
 766         struct wireless_dev *wdev = dev->ieee80211_ptr;
 767         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 768         struct ieee80211_channel *chan;
 769         int err;
 770
 771         switch (wdev->iftype) {
 772         case NL80211_IFTYPE_STATION:
 773                 return cfg80211_mgd_wext_siwfreq(dev, info, freq, extra);
 774         case NL80211_IFTYPE_ADHOC:
 775                 return cfg80211_ibss_wext_siwfreq(dev, info, freq, extra);
 776         default:
 777                 chan = cfg80211_wext_freq(wdev->wiphy, freq);
 778                 if (!chan)
 779                         return -EINVAL;
 780                 if (IS_ERR(chan))
 781                         return PTR_ERR(chan);
 782                 err = rdev->ops->set_channel(wdev->wiphy, chan,
 783                                              NL80211_CHAN_NO_HT);
 784                 if (err)
 785                         return err;
 786                 rdev->channel = chan;
 787                 return 0;
 788         }
 789 }
 790 EXPORT_SYMBOL_GPL(cfg80211_wext_siwfreq);
 791
 792 int cfg80211_wext_giwfreq(struct net_device *dev,
 793                           struct iw_request_info *info,
 794                           struct iw_freq *freq, char *extra)
 795 {
 796         struct wireless_dev *wdev = dev->ieee80211_ptr;
 797         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 798
 799         switch (wdev->iftype) {
 800         case NL80211_IFTYPE_STATION:
 801                 return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
 802         case NL80211_IFTYPE_ADHOC:
 803                 return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
 804         default:
 805                 if (!rdev->channel)
 806                         return -EINVAL;
 807                 freq->m = rdev->channel->center_freq;
 808                 freq->e = 6;
 809                 return 0;
 810         }
 811 }
 812 EXPORT_SYMBOL_GPL(cfg80211_wext_giwfreq);
 813
 814 int cfg80211_wext_siwtxpower(struct net_device *dev,
 815                              struct iw_request_info *info,
 816                              union iwreq_data *data, char *extra)
 817 {
 818         struct wireless_dev *wdev = dev->ieee80211_ptr;
 819         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 820         enum tx_power_setting type;
 821         int dbm = 0;
 822
 823         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 824                 return -EINVAL;
 825         if (data->txpower.flags & IW_TXPOW_RANGE)
 826                 return -EINVAL;
 827
 828         if (!rdev->ops->set_tx_power)
 829                 return -EOPNOTSUPP;
 830
 831         /* only change when not disabling */
 832         if (!data->txpower.disabled) {
 833                 rfkill_set_sw_state(rdev->rfkill, false);
 834
 835                 if (data->txpower.fixed) {
 836                         /*
 837                          * wext doesn't support negative values, see
 838                          * below where it's for automatic
 839                          */
 840                         if (data->txpower.value < 0)
 841                                 return -EINVAL;
 842                         dbm = data->txpower.value;
 843                         type = TX_POWER_FIXED;
 844                         /* TODO: do regulatory check! */
 845                 } else {
 846                         /*
 847                          * Automatic power level setting, max being the value
 848                          * passed in from userland.
 849                          */
 850                         if (data->txpower.value < 0) {
 851                                 type = TX_POWER_AUTOMATIC;
 852                         } else {
 853                                 dbm = data->txpower.value;
 854                                 type = TX_POWER_LIMITED;
 855                         }
 856                 }
 857         } else {
 858                 rfkill_set_sw_state(rdev->rfkill, true);
 859                 schedule_work(&rdev->rfkill_sync);
 860                 return 0;
 861         }
 862
 863         return rdev->ops->set_tx_power(wdev->wiphy, type, dbm);;
 864 }
 865 EXPORT_SYMBOL_GPL(cfg80211_wext_siwtxpower);
 866
 867 int cfg80211_wext_giwtxpower(struct net_device *dev,
 868                              struct iw_request_info *info,
 869                              union iwreq_data *data, char *extra)
 870 {
 871         struct wireless_dev *wdev = dev->ieee80211_ptr;
 872         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 873         int err, val;
 874
 875         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 876                 return -EINVAL;
 877         if (data->txpower.flags & IW_TXPOW_RANGE)
 878                 return -EINVAL;
 879
 880         if (!rdev->ops->get_tx_power)
 881                 return -EOPNOTSUPP;
 882
 883         err = rdev->ops->get_tx_power(wdev->wiphy, &val);
 884         if (err)
 885                 return err;
 886
 887         /* well... oh well */
 888         data->txpower.fixed = 1;
 889         data->txpower.disabled = rfkill_blocked(rdev->rfkill);
 890         data->txpower.value = val;
 891         data->txpower.flags = IW_TXPOW_DBM;
 892
 893         return 0;
 894 }
 895 EXPORT_SYMBOL_GPL(cfg80211_wext_giwtxpower);
 896
 897 static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
 898                                  s32 auth_alg)
 899 {
 900         int nr_alg = 0;
 901
 902         if (!auth_alg)
 903                 return -EINVAL;
 904
 905         if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
 906                          IW_AUTH_ALG_SHARED_KEY |
 907                          IW_AUTH_ALG_LEAP))
 908                 return -EINVAL;
 909
 910         if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
 911                 nr_alg++;
 912                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 913         }
 914
 915         if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
 916                 nr_alg++;
 917                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
 918         }
 919
 920         if (auth_alg & IW_AUTH_ALG_LEAP) {
 921                 nr_alg++;
 922                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
 923         }
 924
 925         if (nr_alg > 1)
 926                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
 927
 928         return 0;
 929 }
 930
 931 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
 932 {
 933         wdev->wext.connect.crypto.wpa_versions = 0;
 934
 935         if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
 936                              IW_AUTH_WPA_VERSION_WPA2|
 937                              IW_AUTH_WPA_VERSION_DISABLED))
 938                 return -EINVAL;
 939
 940         if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) &&
 941             (wpa_versions & (IW_AUTH_WPA_VERSION_WPA|
 942                              IW_AUTH_WPA_VERSION_WPA2)))
 943                 return -EINVAL;
 944
 945         if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED)
 946                 wdev->wext.connect.crypto.wpa_versions &=
 947                         ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2);
 948
 949         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
 950                 wdev->wext.connect.crypto.wpa_versions |=
 951                         NL80211_WPA_VERSION_1;
 952
 953         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
 954                 wdev->wext.connect.crypto.wpa_versions |=
 955                         NL80211_WPA_VERSION_2;
 956
 957         return 0;
 958 }
 959
 960 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
 961 {
 962         wdev->wext.connect.crypto.cipher_group = 0;
 963
 964         if (cipher & IW_AUTH_CIPHER_WEP40)
 965                 wdev->wext.connect.crypto.cipher_group =
 966                         WLAN_CIPHER_SUITE_WEP40;
 967         else if (cipher & IW_AUTH_CIPHER_WEP104)
 968                 wdev->wext.connect.crypto.cipher_group =
 969                         WLAN_CIPHER_SUITE_WEP104;
 970         else if (cipher & IW_AUTH_CIPHER_TKIP)
 971                 wdev->wext.connect.crypto.cipher_group =
 972                         WLAN_CIPHER_SUITE_TKIP;
 973         else if (cipher & IW_AUTH_CIPHER_CCMP)
 974                 wdev->wext.connect.crypto.cipher_group =
 975                         WLAN_CIPHER_SUITE_CCMP;
 976         else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
 977                 wdev->wext.connect.crypto.cipher_group =
 978                         WLAN_CIPHER_SUITE_AES_CMAC;
 979         else
 980                 return -EINVAL;
 981
 982         return 0;
 983 }
 984
 985 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
 986 {
 987         int nr_ciphers = 0;
 988         u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
 989
 990         if (cipher & IW_AUTH_CIPHER_WEP40) {
 991                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
 992                 nr_ciphers++;
 993         }
 994
 995         if (cipher & IW_AUTH_CIPHER_WEP104) {
 996                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
 997                 nr_ciphers++;
 998         }
 999
1000         if (cipher & IW_AUTH_CIPHER_TKIP) {
1001                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
1002                 nr_ciphers++;
1003         }
1004
1005         if (cipher & IW_AUTH_CIPHER_CCMP) {
1006                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
1007                 nr_ciphers++;
1008         }
1009
1010         if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
1011                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
1012                 nr_ciphers++;
1013         }
1014
1015         BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
1016
1017         wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
1018
1019         return 0;
1020 }
1021
1022
1023 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
1024 {
1025         int nr_akm_suites = 0;
1026
1027         if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
1028                         IW_AUTH_KEY_MGMT_PSK))
1029                 return -EINVAL;
1030
1031         if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
1032                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1033                         WLAN_AKM_SUITE_8021X;
1034                 nr_akm_suites++;
1035         }
1036
1037         if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
1038                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1039                         WLAN_AKM_SUITE_PSK;
1040                 nr_akm_suites++;
1041         }
1042
1043         wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
1044
1045         return 0;
1046 }
1047
1048 int cfg80211_wext_siwauth(struct net_device *dev,
1049                           struct iw_request_info *info,
1050                           struct iw_param *data, char *extra)
1051 {
1052         struct wireless_dev *wdev = dev->ieee80211_ptr;
1053
1054         if (wdev->iftype != NL80211_IFTYPE_STATION)
1055                 return -EOPNOTSUPP;
1056
1057         switch (data->flags & IW_AUTH_INDEX) {
1058         case IW_AUTH_PRIVACY_INVOKED:
1059                 wdev->wext.connect.privacy = data->value;
1060                 return 0;
1061         case IW_AUTH_WPA_VERSION:
1062                 return cfg80211_set_wpa_version(wdev, data->value);
1063         case IW_AUTH_CIPHER_GROUP:
1064                 return cfg80211_set_cipher_group(wdev, data->value);
1065         case IW_AUTH_KEY_MGMT:
1066                 return cfg80211_set_key_mgt(wdev, data->value);
1067         case IW_AUTH_CIPHER_PAIRWISE:
1068                 return cfg80211_set_cipher_pairwise(wdev, data->value);
1069         case IW_AUTH_80211_AUTH_ALG:
1070                 return cfg80211_set_auth_alg(wdev, data->value);
1071         case IW_AUTH_WPA_ENABLED:
1072         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1073         case IW_AUTH_DROP_UNENCRYPTED:
1074         case IW_AUTH_MFP:
1075                 return 0;
1076         default:
1077                 return -EOPNOTSUPP;
1078         }
1079 }
1080 EXPORT_SYMBOL_GPL(cfg80211_wext_siwauth);
1081
1082 int cfg80211_wext_giwauth(struct net_device *dev,
1083                           struct iw_request_info *info,
1084                           struct iw_param *data, char *extra)
1085 {
1086         /* XXX: what do we need? */
1087
1088         return -EOPNOTSUPP;
1089 }
1090 EXPORT_SYMBOL_GPL(cfg80211_wext_giwauth);
1091
1092 int cfg80211_wext_siwpower(struct net_device *dev,
1093                            struct iw_request_info *info,
1094                            struct iw_param *wrq, char *extra)
1095 {
1096         struct wireless_dev *wdev = dev->ieee80211_ptr;
1097         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1098         bool ps = wdev->wext.ps;
1099         int timeout = wdev->wext.ps_timeout;
1100         int err;
1101
1102         if (wdev->iftype != NL80211_IFTYPE_STATION)
1103                 return -EINVAL;
1104
1105         if (!rdev->ops->set_power_mgmt)
1106                 return -EOPNOTSUPP;
1107
1108         if (wrq->disabled) {
1109                 ps = false;
1110         } else {
1111                 switch (wrq->flags & IW_POWER_MODE) {
1112                 case IW_POWER_ON:       /* If not specified */
1113                 case IW_POWER_MODE:     /* If set all mask */
1114                 case IW_POWER_ALL_R:    /* If explicitely state all */
1115                         ps = true;
1116                         break;
1117                 default:                /* Otherwise we ignore */
1118                         return -EINVAL;
1119                 }
1120
1121                 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1122                         return -EINVAL;
1123
1124                 if (wrq->flags & IW_POWER_TIMEOUT)
1125                         timeout = wrq->value / 1000;
1126         }
1127
1128         err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, ps, timeout);
1129         if (err)
1130                 return err;
1131
1132         wdev->wext.ps = ps;
1133         wdev->wext.ps_timeout = timeout;
1134
1135         return 0;
1136
1137 }
1138 EXPORT_SYMBOL_GPL(cfg80211_wext_siwpower);
1139
1140 int cfg80211_wext_giwpower(struct net_device *dev,
1141                            struct iw_request_info *info,
1142                            struct iw_param *wrq, char *extra)
1143 {
1144         struct wireless_dev *wdev = dev->ieee80211_ptr;
1145
1146         wrq->disabled = !wdev->wext.ps;
1147
1148         return 0;
1149 }
1150 EXPORT_SYMBOL_GPL(cfg80211_wext_giwpower);
1151
1152 static int cfg80211_wds_wext_siwap(struct net_device *dev,
1153                                    struct iw_request_info *info,
1154                                    struct sockaddr *addr, char *extra)
1155 {
1156         struct wireless_dev *wdev = dev->ieee80211_ptr;
1157         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1158         int err;
1159
1160         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1161                 return -EINVAL;
1162
1163         if (addr->sa_family != ARPHRD_ETHER)
1164                 return -EINVAL;
1165
1166         if (netif_running(dev))
1167                 return -EBUSY;
1168
1169         if (!rdev->ops->set_wds_peer)
1170                 return -EOPNOTSUPP;
1171
1172         err = rdev->ops->set_wds_peer(wdev->wiphy, dev, (u8 *) &addr->sa_data);
1173         if (err)
1174                 return err;
1175
1176         memcpy(&wdev->wext.bssid, (u8 *) &addr->sa_data, ETH_ALEN);
1177
1178         return 0;
1179 }
1180
1181 static int cfg80211_wds_wext_giwap(struct net_device *dev,
1182                                    struct iw_request_info *info,
1183                                    struct sockaddr *addr, char *extra)
1184 {
1185         struct wireless_dev *wdev = dev->ieee80211_ptr;
1186
1187         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1188                 return -EINVAL;
1189
1190         addr->sa_family = ARPHRD_ETHER;
1191         memcpy(&addr->sa_data, wdev->wext.bssid, ETH_ALEN);
1192
1193         return 0;
1194 }
1195
1196 int cfg80211_wext_siwrate(struct net_device *dev,
1197                           struct iw_request_info *info,
1198                           struct iw_param *rate, char *extra)
1199 {
1200         struct wireless_dev *wdev = dev->ieee80211_ptr;
1201         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1202         struct cfg80211_bitrate_mask mask;
1203
1204         if (!rdev->ops->set_bitrate_mask)
1205                 return -EOPNOTSUPP;
1206
1207         mask.fixed = 0;
1208         mask.maxrate = 0;
1209
1210         if (rate->value < 0) {
1211                 /* nothing */
1212         } else if (rate->fixed) {
1213                 mask.fixed = rate->value / 1000; /* kbps */
1214         } else {
1215                 mask.maxrate = rate->value / 1000; /* kbps */
1216         }
1217
1218         return rdev->ops->set_bitrate_mask(wdev->wiphy, dev, NULL, &mask);
1219 }
1220 EXPORT_SYMBOL_GPL(cfg80211_wext_siwrate);
1221
1222 int cfg80211_wext_giwrate(struct net_device *dev,
1223                           struct iw_request_info *info,
1224                           struct iw_param *rate, char *extra)
1225 {
1226         struct wireless_dev *wdev = dev->ieee80211_ptr;
1227         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1228         /* we are under RTNL - globally locked - so can use a static struct */
1229         static struct station_info sinfo;
1230         u8 addr[ETH_ALEN];
1231         int err;
1232
1233         if (wdev->iftype != NL80211_IFTYPE_STATION)
1234                 return -EOPNOTSUPP;
1235
1236         if (!rdev->ops->get_station)
1237                 return -EOPNOTSUPP;
1238
1239         err = 0;
1240         wdev_lock(wdev);
1241         if (wdev->current_bss)
1242                 memcpy(addr, wdev->current_bss->pub.bssid, ETH_ALEN);
1243         else
1244                 err = -EOPNOTSUPP;
1245         wdev_unlock(wdev);
1246         if (err)
1247                 return err;
1248
1249         err = rdev->ops->get_station(&rdev->wiphy, dev, addr, &sinfo);
1250         if (err)
1251                 return err;
1252
1253         if (!(sinfo.filled & STATION_INFO_TX_BITRATE))
1254                 return -EOPNOTSUPP;
1255
1256         rate->value = 0;
1257
1258         if (!(sinfo.txrate.flags & RATE_INFO_FLAGS_MCS))
1259                 rate->value = 100000 * sinfo.txrate.legacy;
1260
1261         return 0;
1262 }
1263 EXPORT_SYMBOL_GPL(cfg80211_wext_giwrate);
1264
1265 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
1266 struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
1267 {
1268         struct wireless_dev *wdev = dev->ieee80211_ptr;
1269         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1270         /* we are under RTNL - globally locked - so can use static structs */
1271         static struct iw_statistics wstats;
1272         static struct station_info sinfo;
1273         u8 bssid[ETH_ALEN];
1274
1275         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1276                 return NULL;
1277
1278         if (!rdev->ops->get_station)
1279                 return NULL;
1280
1281         /* Grab BSSID of current BSS, if any */
1282         wdev_lock(wdev);
1283         if (!wdev->current_bss) {
1284                 wdev_unlock(wdev);
1285                 return NULL;
1286         }
1287         memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
1288         wdev_unlock(wdev);
1289
1290         if (rdev->ops->get_station(&rdev->wiphy, dev, bssid, &sinfo))
1291                 return NULL;
1292
1293         memset(&wstats, 0, sizeof(wstats));
1294
1295         switch (rdev->wiphy.signal_type) {
1296         case CFG80211_SIGNAL_TYPE_MBM:
1297                 if (sinfo.filled & STATION_INFO_SIGNAL) {
1298                         int sig = sinfo.signal;
1299                         wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1300                         wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1301                         wstats.qual.updated |= IW_QUAL_DBM;
1302                         wstats.qual.level = sig;
1303                         if (sig < -110)
1304                                 sig = -110;
1305                         else if (sig > -40)
1306                                 sig = -40;
1307                         wstats.qual.qual = sig + 110;
1308                         break;
1309                 }
1310         case CFG80211_SIGNAL_TYPE_UNSPEC:
1311                 if (sinfo.filled & STATION_INFO_SIGNAL) {
1312                         wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1313                         wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1314                         wstats.qual.level = sinfo.signal;
1315                         wstats.qual.qual = sinfo.signal;
1316                         break;
1317                 }
1318         default:
1319                 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1320                 wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1321         }
1322
1323         wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1324
1325         return &wstats;
1326 }
1327 EXPORT_SYMBOL_GPL(cfg80211_wireless_stats);
1328
1329 int cfg80211_wext_siwap(struct net_device *dev,
1330                         struct iw_request_info *info,
1331                         struct sockaddr *ap_addr, char *extra)
1332 {
1333         struct wireless_dev *wdev = dev->ieee80211_ptr;
1334
1335         switch (wdev->iftype) {
1336         case NL80211_IFTYPE_ADHOC:
1337                 return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
1338         case NL80211_IFTYPE_STATION:
1339                 return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
1340         case NL80211_IFTYPE_WDS:
1341                 return cfg80211_wds_wext_siwap(dev, info, ap_addr, extra);
1342         default:
1343                 return -EOPNOTSUPP;
1344         }
1345 }
1346 EXPORT_SYMBOL_GPL(cfg80211_wext_siwap);
1347
1348 int cfg80211_wext_giwap(struct net_device *dev,
1349                         struct iw_request_info *info,
1350                         struct sockaddr *ap_addr, char *extra)
1351 {
1352         struct wireless_dev *wdev = dev->ieee80211_ptr;
1353
1354         switch (wdev->iftype) {
1355         case NL80211_IFTYPE_ADHOC:
1356                 return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
1357         case NL80211_IFTYPE_STATION:
1358                 return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
1359         case NL80211_IFTYPE_WDS:
1360                 return cfg80211_wds_wext_giwap(dev, info, ap_addr, extra);
1361         default:
1362                 return -EOPNOTSUPP;
1363         }
1364 }
1365 EXPORT_SYMBOL_GPL(cfg80211_wext_giwap);