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 frequency, or a negative error code, or 0 for auto.
 271  */
 272 int cfg80211_wext_freq(struct wiphy *wiphy, struct iw_freq *freq)
 273 {
 274         /*
 275          * Parse frequency - return 0 for auto and
 276          * -EINVAL for impossible things.
 277          */
 278         if (freq->e == 0) {
 279                 if (freq->m < 0)
 280                         return 0;
 281                 return ieee80211_channel_to_frequency(freq->m);
 282         } else {
 283                 int i, div = 1000000;
 284                 for (i = 0; i < freq->e; i++)
 285                         div /= 10;
 286                 if (div <= 0)
 287                         return -EINVAL;
 288                 return freq->m / div;
 289         }
 290 }
 291
 292 int cfg80211_wext_siwrts(struct net_device *dev,
 293                          struct iw_request_info *info,
 294                          struct iw_param *rts, char *extra)
 295 {
 296         struct wireless_dev *wdev = dev->ieee80211_ptr;
 297         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 298         u32 orts = wdev->wiphy->rts_threshold;
 299         int err;
 300
 301         if (rts->disabled || !rts->fixed)
 302                 wdev->wiphy->rts_threshold = (u32) -1;
 303         else if (rts->value < 0)
 304                 return -EINVAL;
 305         else
 306                 wdev->wiphy->rts_threshold = rts->value;
 307
 308         err = rdev->ops->set_wiphy_params(wdev->wiphy,
 309                                           WIPHY_PARAM_RTS_THRESHOLD);
 310         if (err)
 311                 wdev->wiphy->rts_threshold = orts;
 312
 313         return err;
 314 }
 315 EXPORT_SYMBOL_GPL(cfg80211_wext_siwrts);
 316
 317 int cfg80211_wext_giwrts(struct net_device *dev,
 318                          struct iw_request_info *info,
 319                          struct iw_param *rts, char *extra)
 320 {
 321         struct wireless_dev *wdev = dev->ieee80211_ptr;
 322
 323         rts->value = wdev->wiphy->rts_threshold;
 324         rts->disabled = rts->value == (u32) -1;
 325         rts->fixed = 1;
 326
 327         return 0;
 328 }
 329 EXPORT_SYMBOL_GPL(cfg80211_wext_giwrts);
 330
 331 int cfg80211_wext_siwfrag(struct net_device *dev,
 332                           struct iw_request_info *info,
 333                           struct iw_param *frag, char *extra)
 334 {
 335         struct wireless_dev *wdev = dev->ieee80211_ptr;
 336         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 337         u32 ofrag = wdev->wiphy->frag_threshold;
 338         int err;
 339
 340         if (frag->disabled || !frag->fixed)
 341                 wdev->wiphy->frag_threshold = (u32) -1;
 342         else if (frag->value < 256)
 343                 return -EINVAL;
 344         else {
 345                 /* Fragment length must be even, so strip LSB. */
 346                 wdev->wiphy->frag_threshold = frag->value & ~0x1;
 347         }
 348
 349         err = rdev->ops->set_wiphy_params(wdev->wiphy,
 350                                           WIPHY_PARAM_FRAG_THRESHOLD);
 351         if (err)
 352                 wdev->wiphy->frag_threshold = ofrag;
 353
 354         return err;
 355 }
 356 EXPORT_SYMBOL_GPL(cfg80211_wext_siwfrag);
 357
 358 int cfg80211_wext_giwfrag(struct net_device *dev,
 359                           struct iw_request_info *info,
 360                           struct iw_param *frag, char *extra)
 361 {
 362         struct wireless_dev *wdev = dev->ieee80211_ptr;
 363
 364         frag->value = wdev->wiphy->frag_threshold;
 365         frag->disabled = frag->value == (u32) -1;
 366         frag->fixed = 1;
 367
 368         return 0;
 369 }
 370 EXPORT_SYMBOL_GPL(cfg80211_wext_giwfrag);
 371
 372 int cfg80211_wext_siwretry(struct net_device *dev,
 373                            struct iw_request_info *info,
 374                            struct iw_param *retry, char *extra)
 375 {
 376         struct wireless_dev *wdev = dev->ieee80211_ptr;
 377         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 378         u32 changed = 0;
 379         u8 olong = wdev->wiphy->retry_long;
 380         u8 oshort = wdev->wiphy->retry_short;
 381         int err;
 382
 383         if (retry->disabled ||
 384             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 385                 return -EINVAL;
 386
 387         if (retry->flags & IW_RETRY_LONG) {
 388                 wdev->wiphy->retry_long = retry->value;
 389                 changed |= WIPHY_PARAM_RETRY_LONG;
 390         } else if (retry->flags & IW_RETRY_SHORT) {
 391                 wdev->wiphy->retry_short = retry->value;
 392                 changed |= WIPHY_PARAM_RETRY_SHORT;
 393         } else {
 394                 wdev->wiphy->retry_short = retry->value;
 395                 wdev->wiphy->retry_long = retry->value;
 396                 changed |= WIPHY_PARAM_RETRY_LONG;
 397                 changed |= WIPHY_PARAM_RETRY_SHORT;
 398         }
 399
 400         if (!changed)
 401                 return 0;
 402
 403         err = rdev->ops->set_wiphy_params(wdev->wiphy, changed);
 404         if (err) {
 405                 wdev->wiphy->retry_short = oshort;
 406                 wdev->wiphy->retry_long = olong;
 407         }
 408
 409         return err;
 410 }
 411 EXPORT_SYMBOL_GPL(cfg80211_wext_siwretry);
 412
 413 int cfg80211_wext_giwretry(struct net_device *dev,
 414                            struct iw_request_info *info,
 415                            struct iw_param *retry, char *extra)
 416 {
 417         struct wireless_dev *wdev = dev->ieee80211_ptr;
 418
 419         retry->disabled = 0;
 420
 421         if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
 422                 /*
 423                  * First return short value, iwconfig will ask long value
 424                  * later if needed
 425                  */
 426                 retry->flags |= IW_RETRY_LIMIT;
 427                 retry->value = wdev->wiphy->retry_short;
 428                 if (wdev->wiphy->retry_long != wdev->wiphy->retry_short)
 429                         retry->flags |= IW_RETRY_LONG;
 430
 431                 return 0;
 432         }
 433
 434         if (retry->flags & IW_RETRY_LONG) {
 435                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
 436                 retry->value = wdev->wiphy->retry_long;
 437         }
 438
 439         return 0;
 440 }
 441 EXPORT_SYMBOL_GPL(cfg80211_wext_giwretry);
 442
 443 static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 444                                      struct net_device *dev, const u8 *addr,
 445                                      bool remove, bool tx_key, int idx,
 446                                      struct key_params *params)
 447 {
 448         struct wireless_dev *wdev = dev->ieee80211_ptr;
 449         int err, i;
 450
 451         if (!wdev->wext.keys) {
 452                 wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys),
 453                                               GFP_KERNEL);
 454                 if (!wdev->wext.keys)
 455                         return -ENOMEM;
 456                 for (i = 0; i < 6; i++)
 457                         wdev->wext.keys->params[i].key =
 458                                 wdev->wext.keys->data[i];
 459         }
 460
 461         if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
 462             wdev->iftype != NL80211_IFTYPE_STATION)
 463                 return -EOPNOTSUPP;
 464
 465         if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 466                 if (!wdev->current_bss)
 467                         return -ENOLINK;
 468
 469                 if (!rdev->ops->set_default_mgmt_key)
 470                         return -EOPNOTSUPP;
 471
 472                 if (idx < 4 || idx > 5)
 473                         return -EINVAL;
 474         } else if (idx < 0 || idx > 3)
 475                 return -EINVAL;
 476
 477         if (remove) {
 478                 err = 0;
 479                 if (wdev->current_bss)
 480                         err = rdev->ops->del_key(&rdev->wiphy, dev, idx, addr);
 481                 if (!err) {
 482                         if (!addr) {
 483                                 wdev->wext.keys->params[idx].key_len = 0;
 484                                 wdev->wext.keys->params[idx].cipher = 0;
 485                         }
 486                         if (idx == wdev->wext.default_key)
 487                                 wdev->wext.default_key = -1;
 488                         else if (idx == wdev->wext.default_mgmt_key)
 489                                 wdev->wext.default_mgmt_key = -1;
 490                 }
 491                 /*
 492                  * Applications using wireless extensions expect to be
 493                  * able to delete keys that don't exist, so allow that.
 494                  */
 495                 if (err == -ENOENT)
 496                         return 0;
 497
 498                 return err;
 499         }
 500
 501         if (addr)
 502                 tx_key = false;
 503
 504         if (cfg80211_validate_key_settings(rdev, params, idx, addr))
 505                 return -EINVAL;
 506
 507         err = 0;
 508         if (wdev->current_bss)
 509                 err = rdev->ops->add_key(&rdev->wiphy, dev, idx, addr, params);
 510         if (err)
 511                 return err;
 512
 513         if (!addr) {
 514                 wdev->wext.keys->params[idx] = *params;
 515                 memcpy(wdev->wext.keys->data[idx],
 516                         params->key, params->key_len);
 517                 wdev->wext.keys->params[idx].key =
 518                         wdev->wext.keys->data[idx];
 519         }
 520
 521         if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 522              params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 523             (tx_key || (!addr && wdev->wext.default_key == -1))) {
 524                 if (wdev->current_bss)
 525                         err = rdev->ops->set_default_key(&rdev->wiphy,
 526                                                          dev, idx);
 527                 if (!err)
 528                         wdev->wext.default_key = idx;
 529                 return err;
 530         }
 531
 532         if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
 533             (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
 534                 if (wdev->current_bss)
 535                         err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
 536                                                               dev, idx);
 537                 if (!err)
 538                         wdev->wext.default_mgmt_key = idx;
 539                 return err;
 540         }
 541
 542         return 0;
 543 }
 544
 545 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 546                                    struct net_device *dev, const u8 *addr,
 547                                    bool remove, bool tx_key, int idx,
 548                                    struct key_params *params)
 549 {
 550         int err;
 551
 552         wdev_lock(dev->ieee80211_ptr);
 553         err = __cfg80211_set_encryption(rdev, dev, addr, remove,
 554                                         tx_key, idx, params);
 555         wdev_unlock(dev->ieee80211_ptr);
 556
 557         return err;
 558 }
 559
 560 int cfg80211_wext_siwencode(struct net_device *dev,
 561                             struct iw_request_info *info,
 562                             struct iw_point *erq, char *keybuf)
 563 {
 564         struct wireless_dev *wdev = dev->ieee80211_ptr;
 565         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 566         int idx, err;
 567         bool remove = false;
 568         struct key_params params;
 569
 570         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 571             wdev->iftype != NL80211_IFTYPE_ADHOC)
 572                 return -EOPNOTSUPP;
 573
 574         /* no use -- only MFP (set_default_mgmt_key) is optional */
 575         if (!rdev->ops->del_key ||
 576             !rdev->ops->add_key ||
 577             !rdev->ops->set_default_key)
 578                 return -EOPNOTSUPP;
 579
 580         idx = erq->flags & IW_ENCODE_INDEX;
 581         if (idx == 0) {
 582                 idx = wdev->wext.default_key;
 583                 if (idx < 0)
 584                         idx = 0;
 585         } else if (idx < 1 || idx > 4)
 586                 return -EINVAL;
 587         else
 588                 idx--;
 589
 590         if (erq->flags & IW_ENCODE_DISABLED)
 591                 remove = true;
 592         else if (erq->length == 0) {
 593                 /* No key data - just set the default TX key index */
 594                 err = 0;
 595                 wdev_lock(wdev);
 596                 if (wdev->current_bss)
 597                         err = rdev->ops->set_default_key(&rdev->wiphy,
 598                                                          dev, idx);
 599                 if (!err)
 600                         wdev->wext.default_key = idx;
 601                 wdev_unlock(wdev);
 602                 return err;
 603         }
 604
 605         memset(&params, 0, sizeof(params));
 606         params.key = keybuf;
 607         params.key_len = erq->length;
 608         if (erq->length == 5)
 609                 params.cipher = WLAN_CIPHER_SUITE_WEP40;
 610         else if (erq->length == 13)
 611                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
 612         else if (!remove)
 613                 return -EINVAL;
 614
 615         return cfg80211_set_encryption(rdev, dev, NULL, remove,
 616                                        wdev->wext.default_key == -1,
 617                                        idx, &params);
 618 }
 619 EXPORT_SYMBOL_GPL(cfg80211_wext_siwencode);
 620
 621 int cfg80211_wext_siwencodeext(struct net_device *dev,
 622                                struct iw_request_info *info,
 623                                struct iw_point *erq, char *extra)
 624 {
 625         struct wireless_dev *wdev = dev->ieee80211_ptr;
 626         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 627         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
 628         const u8 *addr;
 629         int idx;
 630         bool remove = false;
 631         struct key_params params;
 632         u32 cipher;
 633
 634         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 635             wdev->iftype != NL80211_IFTYPE_ADHOC)
 636                 return -EOPNOTSUPP;
 637
 638         /* no use -- only MFP (set_default_mgmt_key) is optional */
 639         if (!rdev->ops->del_key ||
 640             !rdev->ops->add_key ||
 641             !rdev->ops->set_default_key)
 642                 return -EOPNOTSUPP;
 643
 644         switch (ext->alg) {
 645         case IW_ENCODE_ALG_NONE:
 646                 remove = true;
 647                 cipher = 0;
 648                 break;
 649         case IW_ENCODE_ALG_WEP:
 650                 if (ext->key_len == 5)
 651                         cipher = WLAN_CIPHER_SUITE_WEP40;
 652                 else if (ext->key_len == 13)
 653                         cipher = WLAN_CIPHER_SUITE_WEP104;
 654                 else
 655                         return -EINVAL;
 656                 break;
 657         case IW_ENCODE_ALG_TKIP:
 658                 cipher = WLAN_CIPHER_SUITE_TKIP;
 659                 break;
 660         case IW_ENCODE_ALG_CCMP:
 661                 cipher = WLAN_CIPHER_SUITE_CCMP;
 662                 break;
 663         case IW_ENCODE_ALG_AES_CMAC:
 664                 cipher = WLAN_CIPHER_SUITE_AES_CMAC;
 665                 break;
 666         default:
 667                 return -EOPNOTSUPP;
 668         }
 669
 670         if (erq->flags & IW_ENCODE_DISABLED)
 671                 remove = true;
 672
 673         idx = erq->flags & IW_ENCODE_INDEX;
 674         if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 675                 if (idx < 4 || idx > 5) {
 676                         idx = wdev->wext.default_mgmt_key;
 677                         if (idx < 0)
 678                                 return -EINVAL;
 679                 } else
 680                         idx--;
 681         } else {
 682                 if (idx < 1 || idx > 4) {
 683                         idx = wdev->wext.default_key;
 684                         if (idx < 0)
 685                                 return -EINVAL;
 686                 } else
 687                         idx--;
 688         }
 689
 690         addr = ext->addr.sa_data;
 691         if (is_broadcast_ether_addr(addr))
 692                 addr = NULL;
 693
 694         memset(&params, 0, sizeof(params));
 695         params.key = ext->key;
 696         params.key_len = ext->key_len;
 697         params.cipher = cipher;
 698
 699         if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
 700                 params.seq = ext->rx_seq;
 701                 params.seq_len = 6;
 702         }
 703
 704         return cfg80211_set_encryption(
 705                         rdev, dev, addr, remove,
 706                         ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
 707                         idx, &params);
 708 }
 709 EXPORT_SYMBOL_GPL(cfg80211_wext_siwencodeext);
 710
 711 int cfg80211_wext_giwencode(struct net_device *dev,
 712                             struct iw_request_info *info,
 713                             struct iw_point *erq, char *keybuf)
 714 {
 715         struct wireless_dev *wdev = dev->ieee80211_ptr;
 716         int idx;
 717
 718         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 719             wdev->iftype != NL80211_IFTYPE_ADHOC)
 720                 return -EOPNOTSUPP;
 721
 722         idx = erq->flags & IW_ENCODE_INDEX;
 723         if (idx == 0) {
 724                 idx = wdev->wext.default_key;
 725                 if (idx < 0)
 726                         idx = 0;
 727         } else if (idx < 1 || idx > 4)
 728                 return -EINVAL;
 729         else
 730                 idx--;
 731
 732         erq->flags = idx + 1;
 733
 734         if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
 735                 erq->flags |= IW_ENCODE_DISABLED;
 736                 erq->length = 0;
 737                 return 0;
 738         }
 739
 740         erq->length = min_t(size_t, erq->length,
 741                             wdev->wext.keys->params[idx].key_len);
 742         memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
 743         erq->flags |= IW_ENCODE_ENABLED;
 744
 745         return 0;
 746 }
 747 EXPORT_SYMBOL_GPL(cfg80211_wext_giwencode);
 748
 749 int cfg80211_wext_siwfreq(struct net_device *dev,
 750                           struct iw_request_info *info,
 751                           struct iw_freq *wextfreq, char *extra)
 752 {
 753         struct wireless_dev *wdev = dev->ieee80211_ptr;
 754         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 755         int freq, err;
 756
 757         switch (wdev->iftype) {
 758         case NL80211_IFTYPE_STATION:
 759                 return cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
 760         case NL80211_IFTYPE_ADHOC:
 761                 return cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
 762         default:
 763                 freq = cfg80211_wext_freq(wdev->wiphy, wextfreq);
 764                 if (freq < 0)
 765                         return freq;
 766                 if (freq == 0)
 767                         return -EINVAL;
 768                 mutex_lock(&rdev->devlist_mtx);
 769                 err = rdev_set_freq(rdev, NULL, freq, NL80211_CHAN_NO_HT);
 770                 mutex_unlock(&rdev->devlist_mtx);
 771                 return err;
 772         }
 773 }
 774
 775 int cfg80211_wext_giwfreq(struct net_device *dev,
 776                           struct iw_request_info *info,
 777                           struct iw_freq *freq, char *extra)
 778 {
 779         struct wireless_dev *wdev = dev->ieee80211_ptr;
 780         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 781
 782         switch (wdev->iftype) {
 783         case NL80211_IFTYPE_STATION:
 784                 return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
 785         case NL80211_IFTYPE_ADHOC:
 786                 return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
 787         default:
 788                 if (!rdev->channel)
 789                         return -EINVAL;
 790                 freq->m = rdev->channel->center_freq;
 791                 freq->e = 6;
 792                 return 0;
 793         }
 794 }
 795 EXPORT_SYMBOL_GPL(cfg80211_wext_giwfreq);
 796
 797 int cfg80211_wext_siwtxpower(struct net_device *dev,
 798                              struct iw_request_info *info,
 799                              union iwreq_data *data, char *extra)
 800 {
 801         struct wireless_dev *wdev = dev->ieee80211_ptr;
 802         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 803         enum tx_power_setting type;
 804         int dbm = 0;
 805
 806         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 807                 return -EINVAL;
 808         if (data->txpower.flags & IW_TXPOW_RANGE)
 809                 return -EINVAL;
 810
 811         if (!rdev->ops->set_tx_power)
 812                 return -EOPNOTSUPP;
 813
 814         /* only change when not disabling */
 815         if (!data->txpower.disabled) {
 816                 rfkill_set_sw_state(rdev->rfkill, false);
 817
 818                 if (data->txpower.fixed) {
 819                         /*
 820                          * wext doesn't support negative values, see
 821                          * below where it's for automatic
 822                          */
 823                         if (data->txpower.value < 0)
 824                                 return -EINVAL;
 825                         dbm = data->txpower.value;
 826                         type = TX_POWER_FIXED;
 827                         /* TODO: do regulatory check! */
 828                 } else {
 829                         /*
 830                          * Automatic power level setting, max being the value
 831                          * passed in from userland.
 832                          */
 833                         if (data->txpower.value < 0) {
 834                                 type = TX_POWER_AUTOMATIC;
 835                         } else {
 836                                 dbm = data->txpower.value;
 837                                 type = TX_POWER_LIMITED;
 838                         }
 839                 }
 840         } else {
 841                 rfkill_set_sw_state(rdev->rfkill, true);
 842                 schedule_work(&rdev->rfkill_sync);
 843                 return 0;
 844         }
 845
 846         return rdev->ops->set_tx_power(wdev->wiphy, type, dbm);;
 847 }
 848 EXPORT_SYMBOL_GPL(cfg80211_wext_siwtxpower);
 849
 850 int cfg80211_wext_giwtxpower(struct net_device *dev,
 851                              struct iw_request_info *info,
 852                              union iwreq_data *data, char *extra)
 853 {
 854         struct wireless_dev *wdev = dev->ieee80211_ptr;
 855         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 856         int err, val;
 857
 858         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 859                 return -EINVAL;
 860         if (data->txpower.flags & IW_TXPOW_RANGE)
 861                 return -EINVAL;
 862
 863         if (!rdev->ops->get_tx_power)
 864                 return -EOPNOTSUPP;
 865
 866         err = rdev->ops->get_tx_power(wdev->wiphy, &val);
 867         if (err)
 868                 return err;
 869
 870         /* well... oh well */
 871         data->txpower.fixed = 1;
 872         data->txpower.disabled = rfkill_blocked(rdev->rfkill);
 873         data->txpower.value = val;
 874         data->txpower.flags = IW_TXPOW_DBM;
 875
 876         return 0;
 877 }
 878 EXPORT_SYMBOL_GPL(cfg80211_wext_giwtxpower);
 879
 880 static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
 881                                  s32 auth_alg)
 882 {
 883         int nr_alg = 0;
 884
 885         if (!auth_alg)
 886                 return -EINVAL;
 887
 888         if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
 889                          IW_AUTH_ALG_SHARED_KEY |
 890                          IW_AUTH_ALG_LEAP))
 891                 return -EINVAL;
 892
 893         if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
 894                 nr_alg++;
 895                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 896         }
 897
 898         if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
 899                 nr_alg++;
 900                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
 901         }
 902
 903         if (auth_alg & IW_AUTH_ALG_LEAP) {
 904                 nr_alg++;
 905                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
 906         }
 907
 908         if (nr_alg > 1)
 909                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
 910
 911         return 0;
 912 }
 913
 914 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
 915 {
 916         wdev->wext.connect.crypto.wpa_versions = 0;
 917
 918         if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
 919                              IW_AUTH_WPA_VERSION_WPA2|
 920                              IW_AUTH_WPA_VERSION_DISABLED))
 921                 return -EINVAL;
 922
 923         if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) &&
 924             (wpa_versions & (IW_AUTH_WPA_VERSION_WPA|
 925                              IW_AUTH_WPA_VERSION_WPA2)))
 926                 return -EINVAL;
 927
 928         if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED)
 929                 wdev->wext.connect.crypto.wpa_versions &=
 930                         ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2);
 931
 932         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
 933                 wdev->wext.connect.crypto.wpa_versions |=
 934                         NL80211_WPA_VERSION_1;
 935
 936         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
 937                 wdev->wext.connect.crypto.wpa_versions |=
 938                         NL80211_WPA_VERSION_2;
 939
 940         return 0;
 941 }
 942
 943 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
 944 {
 945         wdev->wext.connect.crypto.cipher_group = 0;
 946
 947         if (cipher & IW_AUTH_CIPHER_WEP40)
 948                 wdev->wext.connect.crypto.cipher_group =
 949                         WLAN_CIPHER_SUITE_WEP40;
 950         else if (cipher & IW_AUTH_CIPHER_WEP104)
 951                 wdev->wext.connect.crypto.cipher_group =
 952                         WLAN_CIPHER_SUITE_WEP104;
 953         else if (cipher & IW_AUTH_CIPHER_TKIP)
 954                 wdev->wext.connect.crypto.cipher_group =
 955                         WLAN_CIPHER_SUITE_TKIP;
 956         else if (cipher & IW_AUTH_CIPHER_CCMP)
 957                 wdev->wext.connect.crypto.cipher_group =
 958                         WLAN_CIPHER_SUITE_CCMP;
 959         else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
 960                 wdev->wext.connect.crypto.cipher_group =
 961                         WLAN_CIPHER_SUITE_AES_CMAC;
 962         else
 963                 return -EINVAL;
 964
 965         return 0;
 966 }
 967
 968 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
 969 {
 970         int nr_ciphers = 0;
 971         u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
 972
 973         if (cipher & IW_AUTH_CIPHER_WEP40) {
 974                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
 975                 nr_ciphers++;
 976         }
 977
 978         if (cipher & IW_AUTH_CIPHER_WEP104) {
 979                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
 980                 nr_ciphers++;
 981         }
 982
 983         if (cipher & IW_AUTH_CIPHER_TKIP) {
 984                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
 985                 nr_ciphers++;
 986         }
 987
 988         if (cipher & IW_AUTH_CIPHER_CCMP) {
 989                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
 990                 nr_ciphers++;
 991         }
 992
 993         if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
 994                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
 995                 nr_ciphers++;
 996         }
 997
 998         BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
 999
1000         wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
1001
1002         return 0;
1003 }
1004
1005
1006 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
1007 {
1008         int nr_akm_suites = 0;
1009
1010         if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
1011                         IW_AUTH_KEY_MGMT_PSK))
1012                 return -EINVAL;
1013
1014         if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
1015                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1016                         WLAN_AKM_SUITE_8021X;
1017                 nr_akm_suites++;
1018         }
1019
1020         if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
1021                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1022                         WLAN_AKM_SUITE_PSK;
1023                 nr_akm_suites++;
1024         }
1025
1026         wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
1027
1028         return 0;
1029 }
1030
1031 int cfg80211_wext_siwauth(struct net_device *dev,
1032                           struct iw_request_info *info,
1033                           struct iw_param *data, char *extra)
1034 {
1035         struct wireless_dev *wdev = dev->ieee80211_ptr;
1036
1037         if (wdev->iftype != NL80211_IFTYPE_STATION)
1038                 return -EOPNOTSUPP;
1039
1040         switch (data->flags & IW_AUTH_INDEX) {
1041         case IW_AUTH_PRIVACY_INVOKED:
1042                 wdev->wext.connect.privacy = data->value;
1043                 return 0;
1044         case IW_AUTH_WPA_VERSION:
1045                 return cfg80211_set_wpa_version(wdev, data->value);
1046         case IW_AUTH_CIPHER_GROUP:
1047                 return cfg80211_set_cipher_group(wdev, data->value);
1048         case IW_AUTH_KEY_MGMT:
1049                 return cfg80211_set_key_mgt(wdev, data->value);
1050         case IW_AUTH_CIPHER_PAIRWISE:
1051                 return cfg80211_set_cipher_pairwise(wdev, data->value);
1052         case IW_AUTH_80211_AUTH_ALG:
1053                 return cfg80211_set_auth_alg(wdev, data->value);
1054         case IW_AUTH_WPA_ENABLED:
1055         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1056         case IW_AUTH_DROP_UNENCRYPTED:
1057         case IW_AUTH_MFP:
1058                 return 0;
1059         default:
1060                 return -EOPNOTSUPP;
1061         }
1062 }
1063 EXPORT_SYMBOL_GPL(cfg80211_wext_siwauth);
1064
1065 int cfg80211_wext_giwauth(struct net_device *dev,
1066                           struct iw_request_info *info,
1067                           struct iw_param *data, char *extra)
1068 {
1069         /* XXX: what do we need? */
1070
1071         return -EOPNOTSUPP;
1072 }
1073 EXPORT_SYMBOL_GPL(cfg80211_wext_giwauth);
1074
1075 int cfg80211_wext_siwpower(struct net_device *dev,
1076                            struct iw_request_info *info,
1077                            struct iw_param *wrq, char *extra)
1078 {
1079         struct wireless_dev *wdev = dev->ieee80211_ptr;
1080         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1081         bool ps = wdev->wext.ps;
1082         int timeout = wdev->wext.ps_timeout;
1083         int err;
1084
1085         if (wdev->iftype != NL80211_IFTYPE_STATION)
1086                 return -EINVAL;
1087
1088         if (!rdev->ops->set_power_mgmt)
1089                 return -EOPNOTSUPP;
1090
1091         if (wrq->disabled) {
1092                 ps = false;
1093         } else {
1094                 switch (wrq->flags & IW_POWER_MODE) {
1095                 case IW_POWER_ON:       /* If not specified */
1096                 case IW_POWER_MODE:     /* If set all mask */
1097                 case IW_POWER_ALL_R:    /* If explicitely state all */
1098                         ps = true;
1099                         break;
1100                 default:                /* Otherwise we ignore */
1101                         return -EINVAL;
1102                 }
1103
1104                 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1105                         return -EINVAL;
1106
1107                 if (wrq->flags & IW_POWER_TIMEOUT)
1108                         timeout = wrq->value / 1000;
1109         }
1110
1111         err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, ps, timeout);
1112         if (err)
1113                 return err;
1114
1115         wdev->wext.ps = ps;
1116         wdev->wext.ps_timeout = timeout;
1117
1118         return 0;
1119
1120 }
1121 EXPORT_SYMBOL_GPL(cfg80211_wext_siwpower);
1122
1123 int cfg80211_wext_giwpower(struct net_device *dev,
1124                            struct iw_request_info *info,
1125                            struct iw_param *wrq, char *extra)
1126 {
1127         struct wireless_dev *wdev = dev->ieee80211_ptr;
1128
1129         wrq->disabled = !wdev->wext.ps;
1130
1131         return 0;
1132 }
1133 EXPORT_SYMBOL_GPL(cfg80211_wext_giwpower);
1134
1135 static int cfg80211_wds_wext_siwap(struct net_device *dev,
1136                                    struct iw_request_info *info,
1137                                    struct sockaddr *addr, char *extra)
1138 {
1139         struct wireless_dev *wdev = dev->ieee80211_ptr;
1140         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1141         int err;
1142
1143         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1144                 return -EINVAL;
1145
1146         if (addr->sa_family != ARPHRD_ETHER)
1147                 return -EINVAL;
1148
1149         if (netif_running(dev))
1150                 return -EBUSY;
1151
1152         if (!rdev->ops->set_wds_peer)
1153                 return -EOPNOTSUPP;
1154
1155         err = rdev->ops->set_wds_peer(wdev->wiphy, dev, (u8 *) &addr->sa_data);
1156         if (err)
1157                 return err;
1158
1159         memcpy(&wdev->wext.bssid, (u8 *) &addr->sa_data, ETH_ALEN);
1160
1161         return 0;
1162 }
1163
1164 static int cfg80211_wds_wext_giwap(struct net_device *dev,
1165                                    struct iw_request_info *info,
1166                                    struct sockaddr *addr, char *extra)
1167 {
1168         struct wireless_dev *wdev = dev->ieee80211_ptr;
1169
1170         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1171                 return -EINVAL;
1172
1173         addr->sa_family = ARPHRD_ETHER;
1174         memcpy(&addr->sa_data, wdev->wext.bssid, ETH_ALEN);
1175
1176         return 0;
1177 }
1178
1179 int cfg80211_wext_siwrate(struct net_device *dev,
1180                           struct iw_request_info *info,
1181                           struct iw_param *rate, char *extra)
1182 {
1183         struct wireless_dev *wdev = dev->ieee80211_ptr;
1184         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1185         struct cfg80211_bitrate_mask mask;
1186
1187         if (!rdev->ops->set_bitrate_mask)
1188                 return -EOPNOTSUPP;
1189
1190         mask.fixed = 0;
1191         mask.maxrate = 0;
1192
1193         if (rate->value < 0) {
1194                 /* nothing */
1195         } else if (rate->fixed) {
1196                 mask.fixed = rate->value / 1000; /* kbps */
1197         } else {
1198                 mask.maxrate = rate->value / 1000; /* kbps */
1199         }
1200
1201         return rdev->ops->set_bitrate_mask(wdev->wiphy, dev, NULL, &mask);
1202 }
1203 EXPORT_SYMBOL_GPL(cfg80211_wext_siwrate);
1204
1205 int cfg80211_wext_giwrate(struct net_device *dev,
1206                           struct iw_request_info *info,
1207                           struct iw_param *rate, char *extra)
1208 {
1209         struct wireless_dev *wdev = dev->ieee80211_ptr;
1210         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1211         /* we are under RTNL - globally locked - so can use a static struct */
1212         static struct station_info sinfo;
1213         u8 addr[ETH_ALEN];
1214         int err;
1215
1216         if (wdev->iftype != NL80211_IFTYPE_STATION)
1217                 return -EOPNOTSUPP;
1218
1219         if (!rdev->ops->get_station)
1220                 return -EOPNOTSUPP;
1221
1222         err = 0;
1223         wdev_lock(wdev);
1224         if (wdev->current_bss)
1225                 memcpy(addr, wdev->current_bss->pub.bssid, ETH_ALEN);
1226         else
1227                 err = -EOPNOTSUPP;
1228         wdev_unlock(wdev);
1229         if (err)
1230                 return err;
1231
1232         err = rdev->ops->get_station(&rdev->wiphy, dev, addr, &sinfo);
1233         if (err)
1234                 return err;
1235
1236         if (!(sinfo.filled & STATION_INFO_TX_BITRATE))
1237                 return -EOPNOTSUPP;
1238
1239         rate->value = 0;
1240
1241         if (!(sinfo.txrate.flags & RATE_INFO_FLAGS_MCS))
1242                 rate->value = 100000 * sinfo.txrate.legacy;
1243
1244         return 0;
1245 }
1246 EXPORT_SYMBOL_GPL(cfg80211_wext_giwrate);
1247
1248 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
1249 struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
1250 {
1251         struct wireless_dev *wdev = dev->ieee80211_ptr;
1252         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1253         /* we are under RTNL - globally locked - so can use static structs */
1254         static struct iw_statistics wstats;
1255         static struct station_info sinfo;
1256         u8 bssid[ETH_ALEN];
1257
1258         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1259                 return NULL;
1260
1261         if (!rdev->ops->get_station)
1262                 return NULL;
1263
1264         /* Grab BSSID of current BSS, if any */
1265         wdev_lock(wdev);
1266         if (!wdev->current_bss) {
1267                 wdev_unlock(wdev);
1268                 return NULL;
1269         }
1270         memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
1271         wdev_unlock(wdev);
1272
1273         if (rdev->ops->get_station(&rdev->wiphy, dev, bssid, &sinfo))
1274                 return NULL;
1275
1276         memset(&wstats, 0, sizeof(wstats));
1277
1278         switch (rdev->wiphy.signal_type) {
1279         case CFG80211_SIGNAL_TYPE_MBM:
1280                 if (sinfo.filled & STATION_INFO_SIGNAL) {
1281                         int sig = sinfo.signal;
1282                         wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1283                         wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1284                         wstats.qual.updated |= IW_QUAL_DBM;
1285                         wstats.qual.level = sig;
1286                         if (sig < -110)
1287                                 sig = -110;
1288                         else if (sig > -40)
1289                                 sig = -40;
1290                         wstats.qual.qual = sig + 110;
1291                         break;
1292                 }
1293         case CFG80211_SIGNAL_TYPE_UNSPEC:
1294                 if (sinfo.filled & STATION_INFO_SIGNAL) {
1295                         wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1296                         wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1297                         wstats.qual.level = sinfo.signal;
1298                         wstats.qual.qual = sinfo.signal;
1299                         break;
1300                 }
1301         default:
1302                 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1303                 wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1304         }
1305
1306         wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1307
1308         return &wstats;
1309 }
1310 EXPORT_SYMBOL_GPL(cfg80211_wireless_stats);
1311
1312 int cfg80211_wext_siwap(struct net_device *dev,
1313                         struct iw_request_info *info,
1314                         struct sockaddr *ap_addr, char *extra)
1315 {
1316         struct wireless_dev *wdev = dev->ieee80211_ptr;
1317
1318         switch (wdev->iftype) {
1319         case NL80211_IFTYPE_ADHOC:
1320                 return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
1321         case NL80211_IFTYPE_STATION:
1322                 return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
1323         case NL80211_IFTYPE_WDS:
1324                 return cfg80211_wds_wext_siwap(dev, info, ap_addr, extra);
1325         default:
1326                 return -EOPNOTSUPP;
1327         }
1328 }
1329 EXPORT_SYMBOL_GPL(cfg80211_wext_siwap);
1330
1331 int cfg80211_wext_giwap(struct net_device *dev,
1332                         struct iw_request_info *info,
1333                         struct sockaddr *ap_addr, char *extra)
1334 {
1335         struct wireless_dev *wdev = dev->ieee80211_ptr;
1336
1337         switch (wdev->iftype) {
1338         case NL80211_IFTYPE_ADHOC:
1339                 return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
1340         case NL80211_IFTYPE_STATION:
1341                 return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
1342         case NL80211_IFTYPE_WDS:
1343                 return cfg80211_wds_wext_giwap(dev, info, ap_addr, extra);
1344         default:
1345                 return -EOPNOTSUPP;
1346         }
1347 }
1348 EXPORT_SYMBOL_GPL(cfg80211_wext_giwap);
1349
1350 int cfg80211_wext_siwessid(struct net_device *dev,
1351                            struct iw_request_info *info,
1352                            struct iw_point *data, char *ssid)
1353 {
1354         struct wireless_dev *wdev = dev->ieee80211_ptr;
1355
1356         switch (wdev->iftype) {
1357         case NL80211_IFTYPE_ADHOC:
1358                 return cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
1359         case NL80211_IFTYPE_STATION:
1360                 return cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
1361         default:
1362                 return -EOPNOTSUPP;
1363         }
1364 }
1365 EXPORT_SYMBOL_GPL(cfg80211_wext_siwessid);
1366
1367 int cfg80211_wext_giwessid(struct net_device *dev,
1368                            struct iw_request_info *info,
1369                            struct iw_point *data, char *ssid)
1370 {
1371         struct wireless_dev *wdev = dev->ieee80211_ptr;
1372
1373         switch (wdev->iftype) {
1374         case NL80211_IFTYPE_ADHOC:
1375                 return cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
1376         case NL80211_IFTYPE_STATION:
1377                 return cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
1378         default:
1379                 return -EOPNOTSUPP;
1380         }
1381 }
1382 EXPORT_SYMBOL_GPL(cfg80211_wext_giwessid);
1383
1384 static const iw_handler cfg80211_handlers[] = {
1385         [IW_IOCTL_IDX(SIOCGIWNAME)]     = (iw_handler) cfg80211_wext_giwname,
1386         [IW_IOCTL_IDX(SIOCSIWFREQ)]     = (iw_handler) cfg80211_wext_siwfreq,
1387         [IW_IOCTL_IDX(SIOCGIWFREQ)]     = (iw_handler) cfg80211_wext_giwfreq,
1388         [IW_IOCTL_IDX(SIOCSIWMODE)]     = (iw_handler) cfg80211_wext_siwmode,
1389         [IW_IOCTL_IDX(SIOCGIWMODE)]     = (iw_handler) cfg80211_wext_giwmode,
1390         [IW_IOCTL_IDX(SIOCGIWRANGE)]    = (iw_handler) cfg80211_wext_giwrange,
1391         [IW_IOCTL_IDX(SIOCSIWAP)]       = (iw_handler) cfg80211_wext_siwap,
1392         [IW_IOCTL_IDX(SIOCGIWAP)]       = (iw_handler) cfg80211_wext_giwap,
1393         [IW_IOCTL_IDX(SIOCSIWMLME)]     = (iw_handler) cfg80211_wext_siwmlme,
1394         [IW_IOCTL_IDX(SIOCSIWSCAN)]     = (iw_handler) cfg80211_wext_siwscan,
1395         [IW_IOCTL_IDX(SIOCGIWSCAN)]     = (iw_handler) cfg80211_wext_giwscan,
1396         [IW_IOCTL_IDX(SIOCSIWESSID)]    = (iw_handler) cfg80211_wext_siwessid,
1397         [IW_IOCTL_IDX(SIOCGIWESSID)]    = (iw_handler) cfg80211_wext_giwessid,
1398         [IW_IOCTL_IDX(SIOCSIWRATE)]     = (iw_handler) cfg80211_wext_siwrate,
1399         [IW_IOCTL_IDX(SIOCGIWRATE)]     = (iw_handler) cfg80211_wext_giwrate,
1400         [IW_IOCTL_IDX(SIOCSIWRTS)]      = (iw_handler) cfg80211_wext_siwrts,
1401         [IW_IOCTL_IDX(SIOCGIWRTS)]      = (iw_handler) cfg80211_wext_giwrts,
1402         [IW_IOCTL_IDX(SIOCSIWFRAG)]     = (iw_handler) cfg80211_wext_siwfrag,
1403         [IW_IOCTL_IDX(SIOCGIWFRAG)]     = (iw_handler) cfg80211_wext_giwfrag,
1404         [IW_IOCTL_IDX(SIOCSIWTXPOW)]    = (iw_handler) cfg80211_wext_siwtxpower,
1405         [IW_IOCTL_IDX(SIOCGIWTXPOW)]    = (iw_handler) cfg80211_wext_giwtxpower,
1406         [IW_IOCTL_IDX(SIOCSIWRETRY)]    = (iw_handler) cfg80211_wext_siwretry,
1407         [IW_IOCTL_IDX(SIOCGIWRETRY)]    = (iw_handler) cfg80211_wext_giwretry,
1408         [IW_IOCTL_IDX(SIOCSIWENCODE)]   = (iw_handler) cfg80211_wext_siwencode,
1409         [IW_IOCTL_IDX(SIOCGIWENCODE)]   = (iw_handler) cfg80211_wext_giwencode,
1410         [IW_IOCTL_IDX(SIOCSIWPOWER)]    = (iw_handler) cfg80211_wext_siwpower,
1411         [IW_IOCTL_IDX(SIOCGIWPOWER)]    = (iw_handler) cfg80211_wext_giwpower,
1412         [IW_IOCTL_IDX(SIOCSIWGENIE)]    = (iw_handler) cfg80211_wext_siwgenie,
1413         [IW_IOCTL_IDX(SIOCSIWAUTH)]     = (iw_handler) cfg80211_wext_siwauth,
1414         [IW_IOCTL_IDX(SIOCGIWAUTH)]     = (iw_handler) cfg80211_wext_giwauth,
1415         [IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= (iw_handler) cfg80211_wext_siwencodeext,
1416 };
1417
1418 const struct iw_handler_def cfg80211_wext_handler = {
1419         .num_standard           = ARRAY_SIZE(cfg80211_handlers),
1420         .standard               = cfg80211_handlers,
1421         .get_wireless_stats = cfg80211_wireless_stats,
1422 };