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;
 463
 464         if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 465                 if (!rdev->ops->set_default_mgmt_key)
 466                         return -EOPNOTSUPP;
 467
 468                 if (idx < 4 || idx > 5)
 469                         return -EINVAL;
 470         } else if (idx < 0 || idx > 3)
 471                 return -EINVAL;
 472
 473         if (remove) {
 474                 err = rdev->ops->del_key(&rdev->wiphy, dev, idx, addr);
 475                 if (!err) {
 476                         if (idx == wdev->wext.default_key)
 477                                 wdev->wext.default_key = -1;
 478                         else if (idx == wdev->wext.default_mgmt_key)
 479                                 wdev->wext.default_mgmt_key = -1;
 480                 }
 481                 /*
 482                  * Applications using wireless extensions expect to be
 483                  * able to delete keys that don't exist, so allow that.
 484                  */
 485                 if (err == -ENOENT)
 486                         return 0;
 487
 488                 return err;
 489         } else {
 490                 if (addr)
 491                         tx_key = false;
 492
 493                 if (cfg80211_validate_key_settings(params, idx, addr))
 494                         return -EINVAL;
 495
 496                 err = rdev->ops->add_key(&rdev->wiphy, dev, idx, addr, params);
 497                 if (err)
 498                         return err;
 499
 500                 if (tx_key || (!addr && wdev->wext.default_key == -1)) {
 501                         err = rdev->ops->set_default_key(&rdev->wiphy,
 502                                                          dev, idx);
 503                         if (!err)
 504                                 wdev->wext.default_key = idx;
 505                         return err;
 506                 }
 507
 508                 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
 509                     (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
 510                         err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
 511                                                               dev, idx);
 512                         if (!err)
 513                                 wdev->wext.default_mgmt_key = idx;
 514                         return err;
 515                 }
 516
 517                 return 0;
 518         }
 519 }
 520
 521 int cfg80211_wext_siwencode(struct net_device *dev,
 522                             struct iw_request_info *info,
 523                             struct iw_point *erq, char *keybuf)
 524 {
 525         struct wireless_dev *wdev = dev->ieee80211_ptr;
 526         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 527         int idx, err;
 528         bool remove = false;
 529         struct key_params params;
 530
 531         /* no use -- only MFP (set_default_mgmt_key) is optional */
 532         if (!rdev->ops->del_key ||
 533             !rdev->ops->add_key ||
 534             !rdev->ops->set_default_key)
 535                 return -EOPNOTSUPP;
 536
 537         idx = erq->flags & IW_ENCODE_INDEX;
 538         if (idx == 0) {
 539                 idx = wdev->wext.default_key;
 540                 if (idx < 0)
 541                         idx = 0;
 542         } else if (idx < 1 || idx > 4)
 543                 return -EINVAL;
 544         else
 545                 idx--;
 546
 547         if (erq->flags & IW_ENCODE_DISABLED)
 548                 remove = true;
 549         else if (erq->length == 0) {
 550                 /* No key data - just set the default TX key index */
 551                 err = rdev->ops->set_default_key(&rdev->wiphy, dev, idx);
 552                 if (!err)
 553                         wdev->wext.default_key = idx;
 554                 return err;
 555         }
 556
 557         memset(&params, 0, sizeof(params));
 558         params.key = keybuf;
 559         params.key_len = erq->length;
 560         if (erq->length == 5)
 561                 params.cipher = WLAN_CIPHER_SUITE_WEP40;
 562         else if (erq->length == 13)
 563                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
 564         else if (!remove)
 565                 return -EINVAL;
 566
 567         return cfg80211_set_encryption(rdev, dev, NULL, remove,
 568                                        wdev->wext.default_key == -1,
 569                                        idx, &params);
 570 }
 571 EXPORT_SYMBOL_GPL(cfg80211_wext_siwencode);
 572
 573 int cfg80211_wext_siwencodeext(struct net_device *dev,
 574                                struct iw_request_info *info,
 575                                struct iw_point *erq, char *extra)
 576 {
 577         struct wireless_dev *wdev = dev->ieee80211_ptr;
 578         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 579         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
 580         const u8 *addr;
 581         int idx;
 582         bool remove = false;
 583         struct key_params params;
 584         u32 cipher;
 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         switch (ext->alg) {
 593         case IW_ENCODE_ALG_NONE:
 594                 remove = true;
 595                 cipher = 0;
 596                 break;
 597         case IW_ENCODE_ALG_WEP:
 598                 if (ext->key_len == 5)
 599                         cipher = WLAN_CIPHER_SUITE_WEP40;
 600                 else if (ext->key_len == 13)
 601                         cipher = WLAN_CIPHER_SUITE_WEP104;
 602                 else
 603                         return -EINVAL;
 604                 break;
 605         case IW_ENCODE_ALG_TKIP:
 606                 cipher = WLAN_CIPHER_SUITE_TKIP;
 607                 break;
 608         case IW_ENCODE_ALG_CCMP:
 609                 cipher = WLAN_CIPHER_SUITE_CCMP;
 610                 break;
 611         case IW_ENCODE_ALG_AES_CMAC:
 612                 cipher = WLAN_CIPHER_SUITE_AES_CMAC;
 613                 break;
 614         default:
 615                 return -EOPNOTSUPP;
 616         }
 617
 618         if (erq->flags & IW_ENCODE_DISABLED)
 619                 remove = true;
 620
 621         idx = erq->flags & IW_ENCODE_INDEX;
 622         if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 623                 if (idx < 4 || idx > 5) {
 624                         idx = wdev->wext.default_mgmt_key;
 625                         if (idx < 0)
 626                                 return -EINVAL;
 627                 } else
 628                         idx--;
 629         } else {
 630                 if (idx < 1 || idx > 4) {
 631                         idx = wdev->wext.default_key;
 632                         if (idx < 0)
 633                                 return -EINVAL;
 634                 } else
 635                         idx--;
 636         }
 637
 638         addr = ext->addr.sa_data;
 639         if (is_broadcast_ether_addr(addr))
 640                 addr = NULL;
 641
 642         memset(&params, 0, sizeof(params));
 643         params.key = ext->key;
 644         params.key_len = ext->key_len;
 645         params.cipher = cipher;
 646
 647         if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
 648                 params.seq = ext->rx_seq;
 649                 params.seq_len = 6;
 650         }
 651
 652         return cfg80211_set_encryption(
 653                         rdev, dev, addr, remove,
 654                         ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
 655                         idx, &params);
 656 }
 657 EXPORT_SYMBOL_GPL(cfg80211_wext_siwencodeext);
 658
 659 struct giwencode_cookie {
 660         size_t buflen;
 661         char *keybuf;
 662 };
 663
 664 static void giwencode_get_key_cb(void *cookie, struct key_params *params)
 665 {
 666         struct giwencode_cookie *data = cookie;
 667
 668         if (!params->key) {
 669                 data->buflen = 0;
 670                 return;
 671         }
 672
 673         data->buflen = min_t(size_t, data->buflen, params->key_len);
 674         memcpy(data->keybuf, params->key, data->buflen);
 675 }
 676
 677 int cfg80211_wext_giwencode(struct net_device *dev,
 678                             struct iw_request_info *info,
 679                             struct iw_point *erq, char *keybuf)
 680 {
 681         struct wireless_dev *wdev = dev->ieee80211_ptr;
 682         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 683         int idx, err;
 684         struct giwencode_cookie data = {
 685                 .keybuf = keybuf,
 686                 .buflen = erq->length,
 687         };
 688
 689         if (!rdev->ops->get_key)
 690                 return -EOPNOTSUPP;
 691
 692         idx = erq->flags & IW_ENCODE_INDEX;
 693         if (idx == 0) {
 694                 idx = wdev->wext.default_key;
 695                 if (idx < 0)
 696                         idx = 0;
 697         } else if (idx < 1 || idx > 4)
 698                 return -EINVAL;
 699         else
 700                 idx--;
 701
 702         erq->flags = idx + 1;
 703
 704         err = rdev->ops->get_key(&rdev->wiphy, dev, idx, NULL, &data,
 705                                  giwencode_get_key_cb);
 706         if (!err) {
 707                 erq->length = data.buflen;
 708                 erq->flags |= IW_ENCODE_ENABLED;
 709                 return 0;
 710         }
 711
 712         if (err == -ENOENT) {
 713                 erq->flags |= IW_ENCODE_DISABLED;
 714                 erq->length = 0;
 715                 return 0;
 716         }
 717
 718         return err;
 719 }
 720 EXPORT_SYMBOL_GPL(cfg80211_wext_giwencode);
 721
 722 int cfg80211_wext_siwtxpower(struct net_device *dev,
 723                              struct iw_request_info *info,
 724                              union iwreq_data *data, char *extra)
 725 {
 726         struct wireless_dev *wdev = dev->ieee80211_ptr;
 727         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 728         enum tx_power_setting type;
 729         int dbm = 0;
 730
 731         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 732                 return -EINVAL;
 733         if (data->txpower.flags & IW_TXPOW_RANGE)
 734                 return -EINVAL;
 735
 736         if (!rdev->ops->set_tx_power)
 737                 return -EOPNOTSUPP;
 738
 739         /* only change when not disabling */
 740         if (!data->txpower.disabled) {
 741                 rfkill_set_sw_state(rdev->rfkill, false);
 742
 743                 if (data->txpower.fixed) {
 744                         /*
 745                          * wext doesn't support negative values, see
 746                          * below where it's for automatic
 747                          */
 748                         if (data->txpower.value < 0)
 749                                 return -EINVAL;
 750                         dbm = data->txpower.value;
 751                         type = TX_POWER_FIXED;
 752                         /* TODO: do regulatory check! */
 753                 } else {
 754                         /*
 755                          * Automatic power level setting, max being the value
 756                          * passed in from userland.
 757                          */
 758                         if (data->txpower.value < 0) {
 759                                 type = TX_POWER_AUTOMATIC;
 760                         } else {
 761                                 dbm = data->txpower.value;
 762                                 type = TX_POWER_LIMITED;
 763                         }
 764                 }
 765         } else {
 766                 rfkill_set_sw_state(rdev->rfkill, true);
 767                 schedule_work(&rdev->rfkill_sync);
 768                 return 0;
 769         }
 770
 771         return rdev->ops->set_tx_power(wdev->wiphy, type, dbm);;
 772 }
 773 EXPORT_SYMBOL_GPL(cfg80211_wext_siwtxpower);
 774
 775 int cfg80211_wext_giwtxpower(struct net_device *dev,
 776                              struct iw_request_info *info,
 777                              union iwreq_data *data, char *extra)
 778 {
 779         struct wireless_dev *wdev = dev->ieee80211_ptr;
 780         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 781         int err, val;
 782
 783         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 784                 return -EINVAL;
 785         if (data->txpower.flags & IW_TXPOW_RANGE)
 786                 return -EINVAL;
 787
 788         if (!rdev->ops->get_tx_power)
 789                 return -EOPNOTSUPP;
 790
 791         err = rdev->ops->get_tx_power(wdev->wiphy, &val);
 792         if (err)
 793                 return err;
 794
 795         /* well... oh well */
 796         data->txpower.fixed = 1;
 797         data->txpower.disabled = rfkill_blocked(rdev->rfkill);
 798         data->txpower.value = val;
 799         data->txpower.flags = IW_TXPOW_DBM;
 800
 801         return 0;
 802 }
 803 EXPORT_SYMBOL_GPL(cfg80211_wext_giwtxpower);
 804
 805 static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
 806                                  s32 auth_alg)
 807 {
 808         int nr_alg = 0;
 809
 810         if (!auth_alg)
 811                 return -EINVAL;
 812
 813         if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
 814                          IW_AUTH_ALG_SHARED_KEY |
 815                          IW_AUTH_ALG_LEAP))
 816                 return -EINVAL;
 817
 818         if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
 819                 nr_alg++;
 820                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 821         }
 822
 823         if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
 824                 nr_alg++;
 825                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
 826         }
 827
 828         if (auth_alg & IW_AUTH_ALG_LEAP) {
 829                 nr_alg++;
 830                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
 831         }
 832
 833         if (nr_alg > 1)
 834                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
 835
 836         return 0;
 837 }
 838
 839 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
 840 {
 841         wdev->wext.connect.crypto.wpa_versions = 0;
 842
 843         if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
 844                              IW_AUTH_WPA_VERSION_WPA2))
 845                 return -EINVAL;
 846
 847         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
 848                 wdev->wext.connect.crypto.wpa_versions |=
 849                         NL80211_WPA_VERSION_1;
 850
 851         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
 852                 wdev->wext.connect.crypto.wpa_versions |=
 853                         NL80211_WPA_VERSION_2;
 854
 855         return 0;
 856 }
 857
 858 int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
 859 {
 860         wdev->wext.connect.crypto.cipher_group = 0;
 861
 862         if (cipher & IW_AUTH_CIPHER_WEP40)
 863                 wdev->wext.connect.crypto.cipher_group =
 864                         WLAN_CIPHER_SUITE_WEP40;
 865         else if (cipher & IW_AUTH_CIPHER_WEP104)
 866                 wdev->wext.connect.crypto.cipher_group =
 867                         WLAN_CIPHER_SUITE_WEP104;
 868         else if (cipher & IW_AUTH_CIPHER_TKIP)
 869                 wdev->wext.connect.crypto.cipher_group =
 870                         WLAN_CIPHER_SUITE_TKIP;
 871         else if (cipher & IW_AUTH_CIPHER_CCMP)
 872                 wdev->wext.connect.crypto.cipher_group =
 873                         WLAN_CIPHER_SUITE_CCMP;
 874         else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
 875                 wdev->wext.connect.crypto.cipher_group =
 876                         WLAN_CIPHER_SUITE_AES_CMAC;
 877         else
 878                 return -EINVAL;
 879
 880         return 0;
 881 }
 882
 883 int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
 884 {
 885         int nr_ciphers = 0;
 886         u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
 887
 888         if (cipher & IW_AUTH_CIPHER_WEP40) {
 889                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
 890                 nr_ciphers++;
 891         }
 892
 893         if (cipher & IW_AUTH_CIPHER_WEP104) {
 894                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
 895                 nr_ciphers++;
 896         }
 897
 898         if (cipher & IW_AUTH_CIPHER_TKIP) {
 899                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
 900                 nr_ciphers++;
 901         }
 902
 903         if (cipher & IW_AUTH_CIPHER_CCMP) {
 904                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
 905                 nr_ciphers++;
 906         }
 907
 908         if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
 909                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
 910                 nr_ciphers++;
 911         }
 912
 913         BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
 914
 915         wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
 916
 917         return 0;
 918 }
 919
 920
 921 int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
 922 {
 923         int nr_akm_suites = 0;
 924
 925         if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
 926                         IW_AUTH_KEY_MGMT_PSK))
 927                 return -EINVAL;
 928
 929         if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
 930                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
 931                         WLAN_AKM_SUITE_8021X;
 932                 nr_akm_suites++;
 933         }
 934
 935         if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
 936                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
 937                         WLAN_AKM_SUITE_PSK;
 938                 nr_akm_suites++;
 939         }
 940
 941         wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
 942
 943         return 0;
 944 }
 945
 946 int cfg80211_wext_siwauth(struct net_device *dev,
 947                           struct iw_request_info *info,
 948                           struct iw_param *data, char *extra)
 949 {
 950         struct wireless_dev *wdev = dev->ieee80211_ptr;
 951
 952         if (wdev->iftype != NL80211_IFTYPE_STATION)
 953                 return -EOPNOTSUPP;
 954
 955         switch (data->flags & IW_AUTH_INDEX) {
 956         case IW_AUTH_PRIVACY_INVOKED:
 957                 wdev->wext.connect.privacy = data->value;
 958                 return 0;
 959         case IW_AUTH_WPA_VERSION:
 960                 return cfg80211_set_wpa_version(wdev, data->value);
 961         case IW_AUTH_CIPHER_GROUP:
 962                 return cfg80211_set_cipher_group(wdev, data->value);
 963         case IW_AUTH_KEY_MGMT:
 964                 return cfg80211_set_key_mgt(wdev, data->value);
 965         case IW_AUTH_CIPHER_PAIRWISE:
 966                 return cfg80211_set_cipher_pairwise(wdev, data->value);
 967         case IW_AUTH_80211_AUTH_ALG:
 968                 return cfg80211_set_auth_alg(wdev, data->value);
 969         case IW_AUTH_WPA_ENABLED:
 970         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
 971         case IW_AUTH_DROP_UNENCRYPTED:
 972         case IW_AUTH_MFP:
 973                 return 0;
 974         default:
 975                 return -EOPNOTSUPP;
 976         }
 977 }
 978 EXPORT_SYMBOL_GPL(cfg80211_wext_siwauth);
 979
 980 int cfg80211_wext_giwauth(struct net_device *dev,
 981                           struct iw_request_info *info,
 982                           struct iw_param *data, char *extra)
 983 {
 984         /* XXX: what do we need? */
 985
 986         return -EOPNOTSUPP;
 987 }
 988 EXPORT_SYMBOL_GPL(cfg80211_wext_giwauth);
 989
 990 int cfg80211_wext_siwpower(struct net_device *dev,
 991                            struct iw_request_info *info,
 992                            struct iw_param *wrq, char *extra)
 993 {
 994         struct wireless_dev *wdev = dev->ieee80211_ptr;
 995         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 996         bool ps = wdev->wext.ps;
 997         int timeout = wdev->wext.ps_timeout;
 998         int err;
 999
1000         if (wdev->iftype != NL80211_IFTYPE_STATION)
1001                 return -EINVAL;
1002
1003         if (!rdev->ops->set_power_mgmt)
1004                 return -EOPNOTSUPP;
1005
1006         if (wrq->disabled) {
1007                 ps = false;
1008         } else {
1009                 switch (wrq->flags & IW_POWER_MODE) {
1010                 case IW_POWER_ON:       /* If not specified */
1011                 case IW_POWER_MODE:     /* If set all mask */
1012                 case IW_POWER_ALL_R:    /* If explicitely state all */
1013                         ps = true;
1014                         break;
1015                 default:                /* Otherwise we ignore */
1016                         return -EINVAL;
1017                 }
1018
1019                 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1020                         return -EINVAL;
1021
1022                 if (wrq->flags & IW_POWER_TIMEOUT)
1023                         timeout = wrq->value / 1000;
1024         }
1025
1026         err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, ps, timeout);
1027         if (err)
1028                 return err;
1029
1030         wdev->wext.ps = ps;
1031         wdev->wext.ps_timeout = timeout;
1032
1033         return 0;
1034
1035 }
1036 EXPORT_SYMBOL_GPL(cfg80211_wext_siwpower);
1037
1038 int cfg80211_wext_giwpower(struct net_device *dev,
1039                            struct iw_request_info *info,
1040                            struct iw_param *wrq, char *extra)
1041 {
1042         struct wireless_dev *wdev = dev->ieee80211_ptr;
1043
1044         wrq->disabled = !wdev->wext.ps;
1045
1046         return 0;
1047 }
1048 EXPORT_SYMBOL_GPL(cfg80211_wext_giwpower);
1049
1050 int cfg80211_wds_wext_siwap(struct net_device *dev,
1051                             struct iw_request_info *info,
1052                             struct sockaddr *addr, char *extra)
1053 {
1054         struct wireless_dev *wdev = dev->ieee80211_ptr;
1055         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1056         int err;
1057
1058         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1059                 return -EINVAL;
1060
1061         if (addr->sa_family != ARPHRD_ETHER)
1062                 return -EINVAL;
1063
1064         if (netif_running(dev))
1065                 return -EBUSY;
1066
1067         if (!rdev->ops->set_wds_peer)
1068                 return -EOPNOTSUPP;
1069
1070         err = rdev->ops->set_wds_peer(wdev->wiphy, dev, (u8 *) &addr->sa_data);
1071         if (err)
1072                 return err;
1073
1074         memcpy(&wdev->wext.bssid, (u8 *) &addr->sa_data, ETH_ALEN);
1075
1076         return 0;
1077 }
1078 EXPORT_SYMBOL_GPL(cfg80211_wds_wext_siwap);
1079
1080 int cfg80211_wds_wext_giwap(struct net_device *dev,
1081                             struct iw_request_info *info,
1082                             struct sockaddr *addr, char *extra)
1083 {
1084         struct wireless_dev *wdev = dev->ieee80211_ptr;
1085
1086         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1087                 return -EINVAL;
1088
1089         addr->sa_family = ARPHRD_ETHER;
1090         memcpy(&addr->sa_data, wdev->wext.bssid, ETH_ALEN);
1091
1092         return 0;
1093 }
1094 EXPORT_SYMBOL_GPL(cfg80211_wds_wext_giwap);
1095
1096 int cfg80211_wext_siwrate(struct net_device *dev,
1097                           struct iw_request_info *info,
1098                           struct iw_param *rate, char *extra)
1099 {
1100         struct wireless_dev *wdev = dev->ieee80211_ptr;
1101         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1102         struct cfg80211_bitrate_mask mask;
1103
1104         if (!rdev->ops->set_bitrate_mask)
1105                 return -EOPNOTSUPP;
1106
1107         mask.fixed = 0;
1108         mask.maxrate = 0;
1109
1110         if (rate->value < 0) {
1111                 /* nothing */
1112         } else if (rate->fixed) {
1113                 mask.fixed = rate->value / 1000; /* kbps */
1114         } else {
1115                 mask.maxrate = rate->value / 1000; /* kbps */
1116         }
1117
1118         return rdev->ops->set_bitrate_mask(wdev->wiphy, dev, NULL, &mask);
1119 }
1120 EXPORT_SYMBOL_GPL(cfg80211_wext_siwrate);
1121
1122 int cfg80211_wext_giwrate(struct net_device *dev,
1123                           struct iw_request_info *info,
1124                           struct iw_param *rate, char *extra)
1125 {
1126         struct wireless_dev *wdev = dev->ieee80211_ptr;
1127         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1128         /* we are under RTNL - globally locked - so can use a static struct */
1129         static struct station_info sinfo;
1130         u8 *addr;
1131         int err;
1132
1133         if (wdev->iftype != NL80211_IFTYPE_STATION)
1134                 return -EOPNOTSUPP;
1135
1136         if (!rdev->ops->get_station)
1137                 return -EOPNOTSUPP;
1138
1139         if (wdev->current_bss)
1140                 addr = wdev->current_bss->pub.bssid;
1141         else if (wdev->wext.connect.bssid)
1142                 addr = wdev->wext.connect.bssid;
1143         else
1144                 return -EOPNOTSUPP;
1145
1146         err = rdev->ops->get_station(&rdev->wiphy, dev, addr, &sinfo);
1147         if (err)
1148                 return err;
1149
1150         if (!(sinfo.filled & STATION_INFO_TX_BITRATE))
1151                 return -EOPNOTSUPP;
1152
1153         rate->value = 0;
1154
1155         if (!(sinfo.txrate.flags & RATE_INFO_FLAGS_MCS))
1156                 rate->value = 100000 * sinfo.txrate.legacy;
1157
1158         return 0;
1159 }
1160 EXPORT_SYMBOL_GPL(cfg80211_wext_giwrate);
1161
1162 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
1163 struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
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 static structs */
1168         static struct iw_statistics wstats;
1169         static struct station_info sinfo;
1170         u8 *addr;
1171
1172         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1173                 return NULL;
1174
1175         if (!rdev->ops->get_station)
1176                 return NULL;
1177
1178         addr = wdev->wext.connect.bssid;
1179         if (!addr)
1180                 return NULL;
1181
1182         if (rdev->ops->get_station(&rdev->wiphy, dev, addr, &sinfo))
1183                 return NULL;
1184
1185         memset(&wstats, 0, sizeof(wstats));
1186
1187         switch (rdev->wiphy.signal_type) {
1188         case CFG80211_SIGNAL_TYPE_MBM:
1189                 if (sinfo.filled & STATION_INFO_SIGNAL) {
1190                         int sig = sinfo.signal;
1191                         wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1192                         wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1193                         wstats.qual.updated |= IW_QUAL_DBM;
1194                         wstats.qual.level = sig;
1195                         if (sig < -110)
1196                                 sig = -110;
1197                         else if (sig > -40)
1198                                 sig = -40;
1199                         wstats.qual.qual = sig + 110;
1200                         break;
1201                 }
1202         case CFG80211_SIGNAL_TYPE_UNSPEC:
1203                 if (sinfo.filled & STATION_INFO_SIGNAL) {
1204                         wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1205                         wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1206                         wstats.qual.level = sinfo.signal;
1207                         wstats.qual.qual = sinfo.signal;
1208                         break;
1209                 }
1210         default:
1211                 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1212                 wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1213         }
1214
1215         wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1216
1217         return &wstats;
1218 }
1219 EXPORT_SYMBOL_GPL(cfg80211_wireless_stats);