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 "core.h"
  18
  19 int cfg80211_wext_giwname(struct net_device *dev,
  20                           struct iw_request_info *info,
  21                           char *name, char *extra)
  22 {
  23         struct wireless_dev *wdev = dev->ieee80211_ptr;
  24         struct ieee80211_supported_band *sband;
  25         bool is_ht = false, is_a = false, is_b = false, is_g = false;
  26
  27         if (!wdev)
  28                 return -EOPNOTSUPP;
  29
  30         sband = wdev->wiphy->bands[IEEE80211_BAND_5GHZ];
  31         if (sband) {
  32                 is_a = true;
  33                 is_ht |= sband->ht_cap.ht_supported;
  34         }
  35
  36         sband = wdev->wiphy->bands[IEEE80211_BAND_2GHZ];
  37         if (sband) {
  38                 int i;
  39                 /* Check for mandatory rates */
  40                 for (i = 0; i < sband->n_bitrates; i++) {
  41                         if (sband->bitrates[i].bitrate == 10)
  42                                 is_b = true;
  43                         if (sband->bitrates[i].bitrate == 60)
  44                                 is_g = true;
  45                 }
  46                 is_ht |= sband->ht_cap.ht_supported;
  47         }
  48
  49         strcpy(name, "IEEE 802.11");
  50         if (is_a)
  51                 strcat(name, "a");
  52         if (is_b)
  53                 strcat(name, "b");
  54         if (is_g)
  55                 strcat(name, "g");
  56         if (is_ht)
  57                 strcat(name, "n");
  58
  59         return 0;
  60 }
  61 EXPORT_SYMBOL_GPL(cfg80211_wext_giwname);
  62
  63 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
  64                           u32 *mode, char *extra)
  65 {
  66         struct wireless_dev *wdev = dev->ieee80211_ptr;
  67         struct cfg80211_registered_device *rdev;
  68         struct vif_params vifparams;
  69         enum nl80211_iftype type;
  70         int ret;
  71
  72         if (!wdev)
  73                 return -EOPNOTSUPP;
  74
  75         rdev = wiphy_to_dev(wdev->wiphy);
  76
  77         if (!rdev->ops->change_virtual_intf)
  78                 return -EOPNOTSUPP;
  79
  80         /* don't support changing VLANs, you just re-create them */
  81         if (wdev->iftype == NL80211_IFTYPE_AP_VLAN)
  82                 return -EOPNOTSUPP;
  83
  84         switch (*mode) {
  85         case IW_MODE_INFRA:
  86                 type = NL80211_IFTYPE_STATION;
  87                 break;
  88         case IW_MODE_ADHOC:
  89                 type = NL80211_IFTYPE_ADHOC;
  90                 break;
  91         case IW_MODE_REPEAT:
  92                 type = NL80211_IFTYPE_WDS;
  93                 break;
  94         case IW_MODE_MONITOR:
  95                 type = NL80211_IFTYPE_MONITOR;
  96                 break;
  97         default:
  98                 return -EINVAL;
  99         }
 100
 101         if (type == wdev->iftype)
 102                 return 0;
 103
 104         memset(&vifparams, 0, sizeof(vifparams));
 105
 106         ret = rdev->ops->change_virtual_intf(wdev->wiphy, dev, type,
 107                                              NULL, &vifparams);
 108         WARN_ON(!ret && wdev->iftype != type);
 109
 110         return ret;
 111 }
 112 EXPORT_SYMBOL_GPL(cfg80211_wext_siwmode);
 113
 114 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
 115                           u32 *mode, char *extra)
 116 {
 117         struct wireless_dev *wdev = dev->ieee80211_ptr;
 118
 119         if (!wdev)
 120                 return -EOPNOTSUPP;
 121
 122         switch (wdev->iftype) {
 123         case NL80211_IFTYPE_AP:
 124                 *mode = IW_MODE_MASTER;
 125                 break;
 126         case NL80211_IFTYPE_STATION:
 127                 *mode = IW_MODE_INFRA;
 128                 break;
 129         case NL80211_IFTYPE_ADHOC:
 130                 *mode = IW_MODE_ADHOC;
 131                 break;
 132         case NL80211_IFTYPE_MONITOR:
 133                 *mode = IW_MODE_MONITOR;
 134                 break;
 135         case NL80211_IFTYPE_WDS:
 136                 *mode = IW_MODE_REPEAT;
 137                 break;
 138         case NL80211_IFTYPE_AP_VLAN:
 139                 *mode = IW_MODE_SECOND;         /* FIXME */
 140                 break;
 141         default:
 142                 *mode = IW_MODE_AUTO;
 143                 break;
 144         }
 145         return 0;
 146 }
 147 EXPORT_SYMBOL_GPL(cfg80211_wext_giwmode);
 148
 149
 150 int cfg80211_wext_giwrange(struct net_device *dev,
 151                            struct iw_request_info *info,
 152                            struct iw_point *data, char *extra)
 153 {
 154         struct wireless_dev *wdev = dev->ieee80211_ptr;
 155         struct iw_range *range = (struct iw_range *) extra;
 156         enum ieee80211_band band;
 157         int i, c = 0;
 158
 159         if (!wdev)
 160                 return -EOPNOTSUPP;
 161
 162         data->length = sizeof(struct iw_range);
 163         memset(range, 0, sizeof(struct iw_range));
 164
 165         range->we_version_compiled = WIRELESS_EXT;
 166         range->we_version_source = 21;
 167         range->retry_capa = IW_RETRY_LIMIT;
 168         range->retry_flags = IW_RETRY_LIMIT;
 169         range->min_retry = 0;
 170         range->max_retry = 255;
 171         range->min_rts = 0;
 172         range->max_rts = 2347;
 173         range->min_frag = 256;
 174         range->max_frag = 2346;
 175
 176         range->max_encoding_tokens = 4;
 177
 178         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
 179
 180         switch (wdev->wiphy->signal_type) {
 181         case CFG80211_SIGNAL_TYPE_NONE:
 182                 break;
 183         case CFG80211_SIGNAL_TYPE_MBM:
 184                 range->max_qual.level = -110;
 185                 range->max_qual.qual = 70;
 186                 range->avg_qual.qual = 35;
 187                 range->max_qual.updated |= IW_QUAL_DBM;
 188                 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 189                 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 190                 break;
 191         case CFG80211_SIGNAL_TYPE_UNSPEC:
 192                 range->max_qual.level = 100;
 193                 range->max_qual.qual = 100;
 194                 range->avg_qual.qual = 50;
 195                 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 196                 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 197                 break;
 198         }
 199
 200         range->avg_qual.level = range->max_qual.level / 2;
 201         range->avg_qual.noise = range->max_qual.noise / 2;
 202         range->avg_qual.updated = range->max_qual.updated;
 203
 204         for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) {
 205                 switch (wdev->wiphy->cipher_suites[i]) {
 206                 case WLAN_CIPHER_SUITE_TKIP:
 207                         range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
 208                                             IW_ENC_CAPA_WPA);
 209                         break;
 210
 211                 case WLAN_CIPHER_SUITE_CCMP:
 212                         range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
 213                                             IW_ENC_CAPA_WPA2);
 214                         break;
 215
 216                 case WLAN_CIPHER_SUITE_WEP40:
 217                         range->encoding_size[range->num_encoding_sizes++] =
 218                                 WLAN_KEY_LEN_WEP40;
 219                         break;
 220
 221                 case WLAN_CIPHER_SUITE_WEP104:
 222                         range->encoding_size[range->num_encoding_sizes++] =
 223                                 WLAN_KEY_LEN_WEP104;
 224                         break;
 225                 }
 226         }
 227
 228         for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
 229                 struct ieee80211_supported_band *sband;
 230
 231                 sband = wdev->wiphy->bands[band];
 232
 233                 if (!sband)
 234                         continue;
 235
 236                 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
 237                         struct ieee80211_channel *chan = &sband->channels[i];
 238
 239                         if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
 240                                 range->freq[c].i =
 241                                         ieee80211_frequency_to_channel(
 242                                                 chan->center_freq);
 243                                 range->freq[c].m = chan->center_freq;
 244                                 range->freq[c].e = 6;
 245                                 c++;
 246                         }
 247                 }
 248         }
 249         range->num_channels = c;
 250         range->num_frequency = c;
 251
 252         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 253         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 254         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
 255
 256         if (wdev->wiphy->max_scan_ssids > 0)
 257                 range->scan_capa |= IW_SCAN_CAPA_ESSID;
 258
 259         return 0;
 260 }
 261 EXPORT_SYMBOL_GPL(cfg80211_wext_giwrange);
 262
 263
 264 /**
 265  * cfg80211_wext_freq - get wext frequency for non-"auto"
 266  * @wiphy: the wiphy
 267  * @freq: the wext freq encoding
 268  *
 269  * Returns a channel, %NULL for auto, or an ERR_PTR for errors!
 270  */
 271 struct ieee80211_channel *cfg80211_wext_freq(struct wiphy *wiphy,
 272                                              struct iw_freq *freq)
 273 {
 274         struct ieee80211_channel *chan;
 275         int f;
 276
 277         /*
 278          * Parse frequency - return NULL for auto and
 279          * -EINVAL for impossible things.
 280          */
 281         if (freq->e == 0) {
 282                 if (freq->m < 0)
 283                         return NULL;
 284                 f = ieee80211_channel_to_frequency(freq->m);
 285         } else {
 286                 int i, div = 1000000;
 287                 for (i = 0; i < freq->e; i++)
 288                         div /= 10;
 289                 if (div <= 0)
 290                         return ERR_PTR(-EINVAL);
 291                 f = freq->m / div;
 292         }
 293
 294         /*
 295          * Look up channel struct and return -EINVAL when
 296          * it cannot be found.
 297          */
 298         chan = ieee80211_get_channel(wiphy, f);
 299         if (!chan)
 300                 return ERR_PTR(-EINVAL);
 301         return chan;
 302 }
 303 EXPORT_SYMBOL_GPL(cfg80211_wext_freq);
 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_AES_CMAC &&
 535             (tx_key || (!addr && wdev->wext.default_key == -1))) {
 536                 if (wdev->current_bss)
 537                         err = rdev->ops->set_default_key(&rdev->wiphy,
 538                                                          dev, idx);
 539                 if (!err)
 540                         wdev->wext.default_key = idx;
 541                 return err;
 542         }
 543
 544         if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
 545             (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
 546                 if (wdev->current_bss)
 547                         err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
 548                                                               dev, idx);
 549                 if (!err)
 550                         wdev->wext.default_mgmt_key = idx;
 551                 return err;
 552         }
 553
 554         return 0;
 555 }
 556
 557 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 558                                    struct net_device *dev, const u8 *addr,
 559                                    bool remove, bool tx_key, int idx,
 560                                    struct key_params *params)
 561 {
 562         int err;
 563
 564         wdev_lock(dev->ieee80211_ptr);
 565         err = __cfg80211_set_encryption(rdev, dev, addr, remove,
 566                                         tx_key, idx, params);
 567         wdev_unlock(dev->ieee80211_ptr);
 568
 569         return err;
 570 }
 571
 572 int cfg80211_wext_siwencode(struct net_device *dev,
 573                             struct iw_request_info *info,
 574                             struct iw_point *erq, char *keybuf)
 575 {
 576         struct wireless_dev *wdev = dev->ieee80211_ptr;
 577         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 578         int idx, err;
 579         bool remove = false;
 580         struct key_params params;
 581
 582         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 583             wdev->iftype != NL80211_IFTYPE_ADHOC)
 584                 return -EOPNOTSUPP;
 585
 586         /* no use -- only MFP (set_default_mgmt_key) is optional */
 587         if (!rdev->ops->del_key ||
 588             !rdev->ops->add_key ||
 589             !rdev->ops->set_default_key)
 590                 return -EOPNOTSUPP;
 591
 592         idx = erq->flags & IW_ENCODE_INDEX;
 593         if (idx == 0) {
 594                 idx = wdev->wext.default_key;
 595                 if (idx < 0)
 596                         idx = 0;
 597         } else if (idx < 1 || idx > 4)
 598                 return -EINVAL;
 599         else
 600                 idx--;
 601
 602         if (erq->flags & IW_ENCODE_DISABLED)
 603                 remove = true;
 604         else if (erq->length == 0) {
 605                 /* No key data - just set the default TX key index */
 606                 err = 0;
 607                 wdev_lock(wdev);
 608                 if (wdev->current_bss)
 609                         err = rdev->ops->set_default_key(&rdev->wiphy,
 610                                                          dev, idx);
 611                 if (!err)
 612                         wdev->wext.default_key = idx;
 613                 wdev_unlock(wdev);
 614                 return err;
 615         }
 616
 617         memset(&params, 0, sizeof(params));
 618         params.key = keybuf;
 619         params.key_len = erq->length;
 620         if (erq->length == 5)
 621                 params.cipher = WLAN_CIPHER_SUITE_WEP40;
 622         else if (erq->length == 13)
 623                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
 624         else if (!remove)
 625                 return -EINVAL;
 626
 627         return cfg80211_set_encryption(rdev, dev, NULL, remove,
 628                                        wdev->wext.default_key == -1,
 629                                        idx, &params);
 630 }
 631 EXPORT_SYMBOL_GPL(cfg80211_wext_siwencode);
 632
 633 int cfg80211_wext_siwencodeext(struct net_device *dev,
 634                                struct iw_request_info *info,
 635                                struct iw_point *erq, char *extra)
 636 {
 637         struct wireless_dev *wdev = dev->ieee80211_ptr;
 638         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 639         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
 640         const u8 *addr;
 641         int idx;
 642         bool remove = false;
 643         struct key_params params;
 644         u32 cipher;
 645
 646         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 647             wdev->iftype != NL80211_IFTYPE_ADHOC)
 648                 return -EOPNOTSUPP;
 649
 650         /* no use -- only MFP (set_default_mgmt_key) is optional */
 651         if (!rdev->ops->del_key ||
 652             !rdev->ops->add_key ||
 653             !rdev->ops->set_default_key)
 654                 return -EOPNOTSUPP;
 655
 656         switch (ext->alg) {
 657         case IW_ENCODE_ALG_NONE:
 658                 remove = true;
 659                 cipher = 0;
 660                 break;
 661         case IW_ENCODE_ALG_WEP:
 662                 if (ext->key_len == 5)
 663                         cipher = WLAN_CIPHER_SUITE_WEP40;
 664                 else if (ext->key_len == 13)
 665                         cipher = WLAN_CIPHER_SUITE_WEP104;
 666                 else
 667                         return -EINVAL;
 668                 break;
 669         case IW_ENCODE_ALG_TKIP:
 670                 cipher = WLAN_CIPHER_SUITE_TKIP;
 671                 break;
 672         case IW_ENCODE_ALG_CCMP:
 673                 cipher = WLAN_CIPHER_SUITE_CCMP;
 674                 break;
 675         case IW_ENCODE_ALG_AES_CMAC:
 676                 cipher = WLAN_CIPHER_SUITE_AES_CMAC;
 677                 break;
 678         default:
 679                 return -EOPNOTSUPP;
 680         }
 681
 682         if (erq->flags & IW_ENCODE_DISABLED)
 683                 remove = true;
 684
 685         idx = erq->flags & IW_ENCODE_INDEX;
 686         if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 687                 if (idx < 4 || idx > 5) {
 688                         idx = wdev->wext.default_mgmt_key;
 689                         if (idx < 0)
 690                                 return -EINVAL;
 691                 } else
 692                         idx--;
 693         } else {
 694                 if (idx < 1 || idx > 4) {
 695                         idx = wdev->wext.default_key;
 696                         if (idx < 0)
 697                                 return -EINVAL;
 698                 } else
 699                         idx--;
 700         }
 701
 702         addr = ext->addr.sa_data;
 703         if (is_broadcast_ether_addr(addr))
 704                 addr = NULL;
 705
 706         memset(&params, 0, sizeof(params));
 707         params.key = ext->key;
 708         params.key_len = ext->key_len;
 709         params.cipher = cipher;
 710
 711         if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
 712                 params.seq = ext->rx_seq;
 713                 params.seq_len = 6;
 714         }
 715
 716         return cfg80211_set_encryption(
 717                         rdev, dev, addr, remove,
 718                         ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
 719                         idx, &params);
 720 }
 721 EXPORT_SYMBOL_GPL(cfg80211_wext_siwencodeext);
 722
 723 int cfg80211_wext_giwencode(struct net_device *dev,
 724                             struct iw_request_info *info,
 725                             struct iw_point *erq, char *keybuf)
 726 {
 727         struct wireless_dev *wdev = dev->ieee80211_ptr;
 728         int idx;
 729
 730         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 731             wdev->iftype != NL80211_IFTYPE_ADHOC)
 732                 return -EOPNOTSUPP;
 733
 734         idx = erq->flags & IW_ENCODE_INDEX;
 735         if (idx == 0) {
 736                 idx = wdev->wext.default_key;
 737                 if (idx < 0)
 738                         idx = 0;
 739         } else if (idx < 1 || idx > 4)
 740                 return -EINVAL;
 741         else
 742                 idx--;
 743
 744         erq->flags = idx + 1;
 745
 746         if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
 747                 erq->flags |= IW_ENCODE_DISABLED;
 748                 erq->length = 0;
 749                 return 0;
 750         }
 751
 752         erq->length = min_t(size_t, erq->length,
 753                             wdev->wext.keys->params[idx].key_len);
 754         memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
 755         erq->flags |= IW_ENCODE_ENABLED;
 756
 757         return 0;
 758 }
 759 EXPORT_SYMBOL_GPL(cfg80211_wext_giwencode);
 760
 761 int cfg80211_wext_siwtxpower(struct net_device *dev,
 762                              struct iw_request_info *info,
 763                              union iwreq_data *data, char *extra)
 764 {
 765         struct wireless_dev *wdev = dev->ieee80211_ptr;
 766         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 767         enum tx_power_setting type;
 768         int dbm = 0;
 769
 770         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 771                 return -EINVAL;
 772         if (data->txpower.flags & IW_TXPOW_RANGE)
 773                 return -EINVAL;
 774
 775         if (!rdev->ops->set_tx_power)
 776                 return -EOPNOTSUPP;
 777
 778         /* only change when not disabling */
 779         if (!data->txpower.disabled) {
 780                 rfkill_set_sw_state(rdev->rfkill, false);
 781
 782                 if (data->txpower.fixed) {
 783                         /*
 784                          * wext doesn't support negative values, see
 785                          * below where it's for automatic
 786                          */
 787                         if (data->txpower.value < 0)
 788                                 return -EINVAL;
 789                         dbm = data->txpower.value;
 790                         type = TX_POWER_FIXED;
 791                         /* TODO: do regulatory check! */
 792                 } else {
 793                         /*
 794                          * Automatic power level setting, max being the value
 795                          * passed in from userland.
 796                          */
 797                         if (data->txpower.value < 0) {
 798                                 type = TX_POWER_AUTOMATIC;
 799                         } else {
 800                                 dbm = data->txpower.value;
 801                                 type = TX_POWER_LIMITED;
 802                         }
 803                 }
 804         } else {
 805                 rfkill_set_sw_state(rdev->rfkill, true);
 806                 schedule_work(&rdev->rfkill_sync);
 807                 return 0;
 808         }
 809
 810         return rdev->ops->set_tx_power(wdev->wiphy, type, dbm);;
 811 }
 812 EXPORT_SYMBOL_GPL(cfg80211_wext_siwtxpower);
 813
 814 int cfg80211_wext_giwtxpower(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         int err, val;
 821
 822         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 823                 return -EINVAL;
 824         if (data->txpower.flags & IW_TXPOW_RANGE)
 825                 return -EINVAL;
 826
 827         if (!rdev->ops->get_tx_power)
 828                 return -EOPNOTSUPP;
 829
 830         err = rdev->ops->get_tx_power(wdev->wiphy, &val);
 831         if (err)
 832                 return err;
 833
 834         /* well... oh well */
 835         data->txpower.fixed = 1;
 836         data->txpower.disabled = rfkill_blocked(rdev->rfkill);
 837         data->txpower.value = val;
 838         data->txpower.flags = IW_TXPOW_DBM;
 839
 840         return 0;
 841 }
 842 EXPORT_SYMBOL_GPL(cfg80211_wext_giwtxpower);
 843
 844 static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
 845                                  s32 auth_alg)
 846 {
 847         int nr_alg = 0;
 848
 849         if (!auth_alg)
 850                 return -EINVAL;
 851
 852         if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
 853                          IW_AUTH_ALG_SHARED_KEY |
 854                          IW_AUTH_ALG_LEAP))
 855                 return -EINVAL;
 856
 857         if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
 858                 nr_alg++;
 859                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 860         }
 861
 862         if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
 863                 nr_alg++;
 864                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
 865         }
 866
 867         if (auth_alg & IW_AUTH_ALG_LEAP) {
 868                 nr_alg++;
 869                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
 870         }
 871
 872         if (nr_alg > 1)
 873                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
 874
 875         return 0;
 876 }
 877
 878 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
 879 {
 880         wdev->wext.connect.crypto.wpa_versions = 0;
 881
 882         if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
 883                              IW_AUTH_WPA_VERSION_WPA2))
 884                 return -EINVAL;
 885
 886         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
 887                 wdev->wext.connect.crypto.wpa_versions |=
 888                         NL80211_WPA_VERSION_1;
 889
 890         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
 891                 wdev->wext.connect.crypto.wpa_versions |=
 892                         NL80211_WPA_VERSION_2;
 893
 894         return 0;
 895 }
 896
 897 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
 898 {
 899         wdev->wext.connect.crypto.cipher_group = 0;
 900
 901         if (cipher & IW_AUTH_CIPHER_WEP40)
 902                 wdev->wext.connect.crypto.cipher_group =
 903                         WLAN_CIPHER_SUITE_WEP40;
 904         else if (cipher & IW_AUTH_CIPHER_WEP104)
 905                 wdev->wext.connect.crypto.cipher_group =
 906                         WLAN_CIPHER_SUITE_WEP104;
 907         else if (cipher & IW_AUTH_CIPHER_TKIP)
 908                 wdev->wext.connect.crypto.cipher_group =
 909                         WLAN_CIPHER_SUITE_TKIP;
 910         else if (cipher & IW_AUTH_CIPHER_CCMP)
 911                 wdev->wext.connect.crypto.cipher_group =
 912                         WLAN_CIPHER_SUITE_CCMP;
 913         else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
 914                 wdev->wext.connect.crypto.cipher_group =
 915                         WLAN_CIPHER_SUITE_AES_CMAC;
 916         else
 917                 return -EINVAL;
 918
 919         return 0;
 920 }
 921
 922 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
 923 {
 924         int nr_ciphers = 0;
 925         u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
 926
 927         if (cipher & IW_AUTH_CIPHER_WEP40) {
 928                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
 929                 nr_ciphers++;
 930         }
 931
 932         if (cipher & IW_AUTH_CIPHER_WEP104) {
 933                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
 934                 nr_ciphers++;
 935         }
 936
 937         if (cipher & IW_AUTH_CIPHER_TKIP) {
 938                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
 939                 nr_ciphers++;
 940         }
 941
 942         if (cipher & IW_AUTH_CIPHER_CCMP) {
 943                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
 944                 nr_ciphers++;
 945         }
 946
 947         if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
 948                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
 949                 nr_ciphers++;
 950         }
 951
 952         BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
 953
 954         wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
 955
 956         return 0;
 957 }
 958
 959
 960 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
 961 {
 962         int nr_akm_suites = 0;
 963
 964         if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
 965                         IW_AUTH_KEY_MGMT_PSK))
 966                 return -EINVAL;
 967
 968         if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
 969                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
 970                         WLAN_AKM_SUITE_8021X;
 971                 nr_akm_suites++;
 972         }
 973
 974         if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
 975                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
 976                         WLAN_AKM_SUITE_PSK;
 977                 nr_akm_suites++;
 978         }
 979
 980         wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
 981
 982         return 0;
 983 }
 984
 985 int cfg80211_wext_siwauth(struct net_device *dev,
 986                           struct iw_request_info *info,
 987                           struct iw_param *data, char *extra)
 988 {
 989         struct wireless_dev *wdev = dev->ieee80211_ptr;
 990
 991         if (wdev->iftype != NL80211_IFTYPE_STATION)
 992                 return -EOPNOTSUPP;
 993
 994         switch (data->flags & IW_AUTH_INDEX) {
 995         case IW_AUTH_PRIVACY_INVOKED:
 996                 wdev->wext.connect.privacy = data->value;
 997                 return 0;
 998         case IW_AUTH_WPA_VERSION:
 999                 return cfg80211_set_wpa_version(wdev, data->value);
1000         case IW_AUTH_CIPHER_GROUP:
1001                 return cfg80211_set_cipher_group(wdev, data->value);
1002         case IW_AUTH_KEY_MGMT:
1003                 return cfg80211_set_key_mgt(wdev, data->value);
1004         case IW_AUTH_CIPHER_PAIRWISE:
1005                 return cfg80211_set_cipher_pairwise(wdev, data->value);
1006         case IW_AUTH_80211_AUTH_ALG:
1007                 return cfg80211_set_auth_alg(wdev, data->value);
1008         case IW_AUTH_WPA_ENABLED:
1009         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1010         case IW_AUTH_DROP_UNENCRYPTED:
1011         case IW_AUTH_MFP:
1012                 return 0;
1013         default:
1014                 return -EOPNOTSUPP;
1015         }
1016 }
1017 EXPORT_SYMBOL_GPL(cfg80211_wext_siwauth);
1018
1019 int cfg80211_wext_giwauth(struct net_device *dev,
1020                           struct iw_request_info *info,
1021                           struct iw_param *data, char *extra)
1022 {
1023         /* XXX: what do we need? */
1024
1025         return -EOPNOTSUPP;
1026 }
1027 EXPORT_SYMBOL_GPL(cfg80211_wext_giwauth);
1028
1029 int cfg80211_wext_siwpower(struct net_device *dev,
1030                            struct iw_request_info *info,
1031                            struct iw_param *wrq, char *extra)
1032 {
1033         struct wireless_dev *wdev = dev->ieee80211_ptr;
1034         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1035         bool ps = wdev->wext.ps;
1036         int timeout = wdev->wext.ps_timeout;
1037         int err;
1038
1039         if (wdev->iftype != NL80211_IFTYPE_STATION)
1040                 return -EINVAL;
1041
1042         if (!rdev->ops->set_power_mgmt)
1043                 return -EOPNOTSUPP;
1044
1045         if (wrq->disabled) {
1046                 ps = false;
1047         } else {
1048                 switch (wrq->flags & IW_POWER_MODE) {
1049                 case IW_POWER_ON:       /* If not specified */
1050                 case IW_POWER_MODE:     /* If set all mask */
1051                 case IW_POWER_ALL_R:    /* If explicitely state all */
1052                         ps = true;
1053                         break;
1054                 default:                /* Otherwise we ignore */
1055                         return -EINVAL;
1056                 }
1057
1058                 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1059                         return -EINVAL;
1060
1061                 if (wrq->flags & IW_POWER_TIMEOUT)
1062                         timeout = wrq->value / 1000;
1063         }
1064
1065         err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, ps, timeout);
1066         if (err)
1067                 return err;
1068
1069         wdev->wext.ps = ps;
1070         wdev->wext.ps_timeout = timeout;
1071
1072         return 0;
1073
1074 }
1075 EXPORT_SYMBOL_GPL(cfg80211_wext_siwpower);
1076
1077 int cfg80211_wext_giwpower(struct net_device *dev,
1078                            struct iw_request_info *info,
1079                            struct iw_param *wrq, char *extra)
1080 {
1081         struct wireless_dev *wdev = dev->ieee80211_ptr;
1082
1083         wrq->disabled = !wdev->wext.ps;
1084
1085         return 0;
1086 }
1087 EXPORT_SYMBOL_GPL(cfg80211_wext_giwpower);
1088
1089 int cfg80211_wds_wext_siwap(struct net_device *dev,
1090                             struct iw_request_info *info,
1091                             struct sockaddr *addr, char *extra)
1092 {
1093         struct wireless_dev *wdev = dev->ieee80211_ptr;
1094         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1095         int err;
1096
1097         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1098                 return -EINVAL;
1099
1100         if (addr->sa_family != ARPHRD_ETHER)
1101                 return -EINVAL;
1102
1103         if (netif_running(dev))
1104                 return -EBUSY;
1105
1106         if (!rdev->ops->set_wds_peer)
1107                 return -EOPNOTSUPP;
1108
1109         err = rdev->ops->set_wds_peer(wdev->wiphy, dev, (u8 *) &addr->sa_data);
1110         if (err)
1111                 return err;
1112
1113         memcpy(&wdev->wext.bssid, (u8 *) &addr->sa_data, ETH_ALEN);
1114
1115         return 0;
1116 }
1117 EXPORT_SYMBOL_GPL(cfg80211_wds_wext_siwap);
1118
1119 int cfg80211_wds_wext_giwap(struct net_device *dev,
1120                             struct iw_request_info *info,
1121                             struct sockaddr *addr, char *extra)
1122 {
1123         struct wireless_dev *wdev = dev->ieee80211_ptr;
1124
1125         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1126                 return -EINVAL;
1127
1128         addr->sa_family = ARPHRD_ETHER;
1129         memcpy(&addr->sa_data, wdev->wext.bssid, ETH_ALEN);
1130
1131         return 0;
1132 }
1133 EXPORT_SYMBOL_GPL(cfg80211_wds_wext_giwap);
1134
1135 int cfg80211_wext_siwrate(struct net_device *dev,
1136                           struct iw_request_info *info,
1137                           struct iw_param *rate, char *extra)
1138 {
1139         struct wireless_dev *wdev = dev->ieee80211_ptr;
1140         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1141         struct cfg80211_bitrate_mask mask;
1142
1143         if (!rdev->ops->set_bitrate_mask)
1144                 return -EOPNOTSUPP;
1145
1146         mask.fixed = 0;
1147         mask.maxrate = 0;
1148
1149         if (rate->value < 0) {
1150                 /* nothing */
1151         } else if (rate->fixed) {
1152                 mask.fixed = rate->value / 1000; /* kbps */
1153         } else {
1154                 mask.maxrate = rate->value / 1000; /* kbps */
1155         }
1156
1157         return rdev->ops->set_bitrate_mask(wdev->wiphy, dev, NULL, &mask);
1158 }
1159 EXPORT_SYMBOL_GPL(cfg80211_wext_siwrate);
1160
1161 int cfg80211_wext_giwrate(struct net_device *dev,
1162                           struct iw_request_info *info,
1163                           struct iw_param *rate, char *extra)
1164 {
1165         struct wireless_dev *wdev = dev->ieee80211_ptr;
1166         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1167         /* we are under RTNL - globally locked - so can use a static struct */
1168         static struct station_info sinfo;
1169         u8 addr[ETH_ALEN];
1170         int err;
1171
1172         if (wdev->iftype != NL80211_IFTYPE_STATION)
1173                 return -EOPNOTSUPP;
1174
1175         if (!rdev->ops->get_station)
1176                 return -EOPNOTSUPP;
1177
1178         err = 0;
1179         wdev_lock(wdev);
1180         if (wdev->current_bss)
1181                 memcpy(addr, wdev->current_bss->pub.bssid, ETH_ALEN);
1182         else
1183                 err = -EOPNOTSUPP;
1184         wdev_unlock(wdev);
1185         if (err)
1186                 return err;
1187
1188         err = rdev->ops->get_station(&rdev->wiphy, dev, addr, &sinfo);
1189         if (err)
1190                 return err;
1191
1192         if (!(sinfo.filled & STATION_INFO_TX_BITRATE))
1193                 return -EOPNOTSUPP;
1194
1195         rate->value = 0;
1196
1197         if (!(sinfo.txrate.flags & RATE_INFO_FLAGS_MCS))
1198                 rate->value = 100000 * sinfo.txrate.legacy;
1199
1200         return 0;
1201 }
1202 EXPORT_SYMBOL_GPL(cfg80211_wext_giwrate);
1203
1204 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
1205 struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
1206 {
1207         struct wireless_dev *wdev = dev->ieee80211_ptr;
1208         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1209         /* we are under RTNL - globally locked - so can use static structs */
1210         static struct iw_statistics wstats;
1211         static struct station_info sinfo;
1212         u8 *addr;
1213
1214         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1215                 return NULL;
1216
1217         if (!rdev->ops->get_station)
1218                 return NULL;
1219
1220         addr = wdev->wext.connect.bssid;
1221         if (!addr)
1222                 return NULL;
1223
1224         if (rdev->ops->get_station(&rdev->wiphy, dev, addr, &sinfo))
1225                 return NULL;
1226
1227         memset(&wstats, 0, sizeof(wstats));
1228
1229         switch (rdev->wiphy.signal_type) {
1230         case CFG80211_SIGNAL_TYPE_MBM:
1231                 if (sinfo.filled & STATION_INFO_SIGNAL) {
1232                         int sig = sinfo.signal;
1233                         wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1234                         wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1235                         wstats.qual.updated |= IW_QUAL_DBM;
1236                         wstats.qual.level = sig;
1237                         if (sig < -110)
1238                                 sig = -110;
1239                         else if (sig > -40)
1240                                 sig = -40;
1241                         wstats.qual.qual = sig + 110;
1242                         break;
1243                 }
1244         case CFG80211_SIGNAL_TYPE_UNSPEC:
1245                 if (sinfo.filled & STATION_INFO_SIGNAL) {
1246                         wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1247                         wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1248                         wstats.qual.level = sinfo.signal;
1249                         wstats.qual.qual = sinfo.signal;
1250                         break;
1251                 }
1252         default:
1253                 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1254                 wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1255         }
1256
1257         wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1258
1259         return &wstats;
1260 }
1261 EXPORT_SYMBOL_GPL(cfg80211_wireless_stats);