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 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->encoding_size[0] = 5;
 177         range->encoding_size[1] = 13;
 178         range->num_encoding_sizes = 2;
 179         range->max_encoding_tokens = 4;
 180
 181         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
 182
 183         switch (wdev->wiphy->signal_type) {
 184         case CFG80211_SIGNAL_TYPE_NONE:
 185                 break;
 186         case CFG80211_SIGNAL_TYPE_MBM:
 187                 range->max_qual.level = -110;
 188                 range->max_qual.qual = 70;
 189                 range->avg_qual.qual = 35;
 190                 range->max_qual.updated |= IW_QUAL_DBM;
 191                 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 192                 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 193                 break;
 194         case CFG80211_SIGNAL_TYPE_UNSPEC:
 195                 range->max_qual.level = 100;
 196                 range->max_qual.qual = 100;
 197                 range->avg_qual.qual = 50;
 198                 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 199                 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 200                 break;
 201         }
 202
 203         range->avg_qual.level = range->max_qual.level / 2;
 204         range->avg_qual.noise = range->max_qual.noise / 2;
 205         range->avg_qual.updated = range->max_qual.updated;
 206
 207         range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2;
 208
 209         for (c = 0; c < wdev->wiphy->n_cipher_suites; c++) {
 210                 switch (wdev->wiphy->cipher_suites[c]) {
 211                 case WLAN_CIPHER_SUITE_TKIP:
 212                         range->enc_capa |= IW_ENC_CAPA_CIPHER_TKIP;
 213                         break;
 214
 215                 case WLAN_CIPHER_SUITE_CCMP:
 216                         range->enc_capa |= IW_ENC_CAPA_CIPHER_CCMP;
 217                         break;
 218                 }
 219         }
 220
 221         for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
 222                 int i;
 223                 struct ieee80211_supported_band *sband;
 224
 225                 sband = wdev->wiphy->bands[band];
 226
 227                 if (!sband)
 228                         continue;
 229
 230                 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
 231                         struct ieee80211_channel *chan = &sband->channels[i];
 232
 233                         if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
 234                                 range->freq[c].i =
 235                                         ieee80211_frequency_to_channel(
 236                                                 chan->center_freq);
 237                                 range->freq[c].m = chan->center_freq;
 238                                 range->freq[c].e = 6;
 239                                 c++;
 240                         }
 241                 }
 242         }
 243         range->num_channels = c;
 244         range->num_frequency = c;
 245
 246         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 247         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 248         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
 249
 250         range->scan_capa |= IW_SCAN_CAPA_ESSID;
 251
 252         return 0;
 253 }
 254 EXPORT_SYMBOL_GPL(cfg80211_wext_giwrange);
 255
 256 int cfg80211_wext_siwmlme(struct net_device *dev,
 257                           struct iw_request_info *info,
 258                           struct iw_point *data, char *extra)
 259 {
 260         struct wireless_dev *wdev = dev->ieee80211_ptr;
 261         struct iw_mlme *mlme = (struct iw_mlme *)extra;
 262         struct cfg80211_registered_device *rdev;
 263         union {
 264                 struct cfg80211_disassoc_request disassoc;
 265                 struct cfg80211_deauth_request deauth;
 266         } cmd;
 267
 268         if (!wdev)
 269                 return -EOPNOTSUPP;
 270
 271         rdev = wiphy_to_dev(wdev->wiphy);
 272
 273         if (wdev->iftype != NL80211_IFTYPE_STATION)
 274                 return -EINVAL;
 275
 276         if (mlme->addr.sa_family != ARPHRD_ETHER)
 277                 return -EINVAL;
 278
 279         memset(&cmd, 0, sizeof(cmd));
 280
 281         switch (mlme->cmd) {
 282         case IW_MLME_DEAUTH:
 283                 if (!rdev->ops->deauth)
 284                         return -EOPNOTSUPP;
 285                 cmd.deauth.peer_addr = mlme->addr.sa_data;
 286                 cmd.deauth.reason_code = mlme->reason_code;
 287                 return rdev->ops->deauth(wdev->wiphy, dev, &cmd.deauth);
 288         case IW_MLME_DISASSOC:
 289                 if (!rdev->ops->disassoc)
 290                         return -EOPNOTSUPP;
 291                 cmd.disassoc.peer_addr = mlme->addr.sa_data;
 292                 cmd.disassoc.reason_code = mlme->reason_code;
 293                 return rdev->ops->disassoc(wdev->wiphy, dev, &cmd.disassoc);
 294         default:
 295                 return -EOPNOTSUPP;
 296         }
 297 }
 298 EXPORT_SYMBOL_GPL(cfg80211_wext_siwmlme);
 299
 300
 301 /**
 302  * cfg80211_wext_freq - get wext frequency for non-"auto"
 303  * @wiphy: the wiphy
 304  * @freq: the wext freq encoding
 305  *
 306  * Returns a channel, %NULL for auto, or an ERR_PTR for errors!
 307  */
 308 struct ieee80211_channel *cfg80211_wext_freq(struct wiphy *wiphy,
 309                                              struct iw_freq *freq)
 310 {
 311         struct ieee80211_channel *chan;
 312         int f;
 313
 314         /*
 315          * Parse frequency - return NULL for auto and
 316          * -EINVAL for impossible things.
 317          */
 318         if (freq->e == 0) {
 319                 if (freq->m < 0)
 320                         return NULL;
 321                 f = ieee80211_channel_to_frequency(freq->m);
 322         } else {
 323                 int i, div = 1000000;
 324                 for (i = 0; i < freq->e; i++)
 325                         div /= 10;
 326                 if (div <= 0)
 327                         return ERR_PTR(-EINVAL);
 328                 f = freq->m / div;
 329         }
 330
 331         /*
 332          * Look up channel struct and return -EINVAL when
 333          * it cannot be found.
 334          */
 335         chan = ieee80211_get_channel(wiphy, f);
 336         if (!chan)
 337                 return ERR_PTR(-EINVAL);
 338         return chan;
 339 }
 340 EXPORT_SYMBOL_GPL(cfg80211_wext_freq);
 341
 342 int cfg80211_wext_siwrts(struct net_device *dev,
 343                          struct iw_request_info *info,
 344                          struct iw_param *rts, char *extra)
 345 {
 346         struct wireless_dev *wdev = dev->ieee80211_ptr;
 347         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 348         u32 orts = wdev->wiphy->rts_threshold;
 349         int err;
 350
 351         if (rts->disabled || !rts->fixed)
 352                 wdev->wiphy->rts_threshold = (u32) -1;
 353         else if (rts->value < 0)
 354                 return -EINVAL;
 355         else
 356                 wdev->wiphy->rts_threshold = rts->value;
 357
 358         err = rdev->ops->set_wiphy_params(wdev->wiphy,
 359                                           WIPHY_PARAM_RTS_THRESHOLD);
 360         if (err)
 361                 wdev->wiphy->rts_threshold = orts;
 362
 363         return err;
 364 }
 365 EXPORT_SYMBOL_GPL(cfg80211_wext_siwrts);
 366
 367 int cfg80211_wext_giwrts(struct net_device *dev,
 368                          struct iw_request_info *info,
 369                          struct iw_param *rts, char *extra)
 370 {
 371         struct wireless_dev *wdev = dev->ieee80211_ptr;
 372
 373         rts->value = wdev->wiphy->rts_threshold;
 374         rts->disabled = rts->value == (u32) -1;
 375         rts->fixed = 1;
 376
 377         return 0;
 378 }
 379 EXPORT_SYMBOL_GPL(cfg80211_wext_giwrts);
 380
 381 int cfg80211_wext_siwfrag(struct net_device *dev,
 382                           struct iw_request_info *info,
 383                           struct iw_param *frag, char *extra)
 384 {
 385         struct wireless_dev *wdev = dev->ieee80211_ptr;
 386         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 387         u32 ofrag = wdev->wiphy->frag_threshold;
 388         int err;
 389
 390         if (frag->disabled || !frag->fixed)
 391                 wdev->wiphy->frag_threshold = (u32) -1;
 392         else if (frag->value < 256)
 393                 return -EINVAL;
 394         else {
 395                 /* Fragment length must be even, so strip LSB. */
 396                 wdev->wiphy->frag_threshold = frag->value & ~0x1;
 397         }
 398
 399         err = rdev->ops->set_wiphy_params(wdev->wiphy,
 400                                           WIPHY_PARAM_FRAG_THRESHOLD);
 401         if (err)
 402                 wdev->wiphy->frag_threshold = ofrag;
 403
 404         return err;
 405 }
 406 EXPORT_SYMBOL_GPL(cfg80211_wext_siwfrag);
 407
 408 int cfg80211_wext_giwfrag(struct net_device *dev,
 409                           struct iw_request_info *info,
 410                           struct iw_param *frag, char *extra)
 411 {
 412         struct wireless_dev *wdev = dev->ieee80211_ptr;
 413
 414         frag->value = wdev->wiphy->frag_threshold;
 415         frag->disabled = frag->value == (u32) -1;
 416         frag->fixed = 1;
 417
 418         return 0;
 419 }
 420 EXPORT_SYMBOL_GPL(cfg80211_wext_giwfrag);
 421
 422 int cfg80211_wext_siwretry(struct net_device *dev,
 423                            struct iw_request_info *info,
 424                            struct iw_param *retry, char *extra)
 425 {
 426         struct wireless_dev *wdev = dev->ieee80211_ptr;
 427         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 428         u32 changed = 0;
 429         u8 olong = wdev->wiphy->retry_long;
 430         u8 oshort = wdev->wiphy->retry_short;
 431         int err;
 432
 433         if (retry->disabled ||
 434             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 435                 return -EINVAL;
 436
 437         if (retry->flags & IW_RETRY_LONG) {
 438                 wdev->wiphy->retry_long = retry->value;
 439                 changed |= WIPHY_PARAM_RETRY_LONG;
 440         } else if (retry->flags & IW_RETRY_SHORT) {
 441                 wdev->wiphy->retry_short = retry->value;
 442                 changed |= WIPHY_PARAM_RETRY_SHORT;
 443         } else {
 444                 wdev->wiphy->retry_short = retry->value;
 445                 wdev->wiphy->retry_long = retry->value;
 446                 changed |= WIPHY_PARAM_RETRY_LONG;
 447                 changed |= WIPHY_PARAM_RETRY_SHORT;
 448         }
 449
 450         if (!changed)
 451                 return 0;
 452
 453         err = rdev->ops->set_wiphy_params(wdev->wiphy, changed);
 454         if (err) {
 455                 wdev->wiphy->retry_short = oshort;
 456                 wdev->wiphy->retry_long = olong;
 457         }
 458
 459         return err;
 460 }
 461 EXPORT_SYMBOL_GPL(cfg80211_wext_siwretry);
 462
 463 int cfg80211_wext_giwretry(struct net_device *dev,
 464                            struct iw_request_info *info,
 465                            struct iw_param *retry, char *extra)
 466 {
 467         struct wireless_dev *wdev = dev->ieee80211_ptr;
 468
 469         retry->disabled = 0;
 470
 471         if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
 472                 /*
 473                  * First return short value, iwconfig will ask long value
 474                  * later if needed
 475                  */
 476                 retry->flags |= IW_RETRY_LIMIT;
 477                 retry->value = wdev->wiphy->retry_short;
 478                 if (wdev->wiphy->retry_long != wdev->wiphy->retry_short)
 479                         retry->flags |= IW_RETRY_LONG;
 480
 481                 return 0;
 482         }
 483
 484         if (retry->flags & IW_RETRY_LONG) {
 485                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
 486                 retry->value = wdev->wiphy->retry_long;
 487         }
 488
 489         return 0;
 490 }
 491 EXPORT_SYMBOL_GPL(cfg80211_wext_giwretry);
 492
 493 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 494                                    struct net_device *dev, const u8 *addr,
 495                                    bool remove, bool tx_key, int idx,
 496                                    struct key_params *params)
 497 {
 498         struct wireless_dev *wdev = dev->ieee80211_ptr;
 499         int err;
 500
 501         if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 502                 if (!rdev->ops->set_default_mgmt_key)
 503                         return -EOPNOTSUPP;
 504
 505                 if (idx < 4 || idx > 5)
 506                         return -EINVAL;
 507         } else if (idx < 0 || idx > 3)
 508                 return -EINVAL;
 509
 510         if (remove) {
 511                 err = rdev->ops->del_key(&rdev->wiphy, dev, idx, addr);
 512                 if (!err) {
 513                         if (idx == wdev->wext.default_key)
 514                                 wdev->wext.default_key = -1;
 515                         else if (idx == wdev->wext.default_mgmt_key)
 516                                 wdev->wext.default_mgmt_key = -1;
 517                 }
 518                 /*
 519                  * Applications using wireless extensions expect to be
 520                  * able to delete keys that don't exist, so allow that.
 521                  */
 522                 if (err == -ENOENT)
 523                         return 0;
 524
 525                 return err;
 526         } else {
 527                 if (addr)
 528                         tx_key = false;
 529
 530                 if (cfg80211_validate_key_settings(params, idx, addr))
 531                         return -EINVAL;
 532
 533                 err = rdev->ops->add_key(&rdev->wiphy, dev, idx, addr, params);
 534                 if (err)
 535                         return err;
 536
 537                 if (tx_key || (!addr && wdev->wext.default_key == -1)) {
 538                         err = rdev->ops->set_default_key(&rdev->wiphy,
 539                                                          dev, idx);
 540                         if (!err)
 541                                 wdev->wext.default_key = idx;
 542                         return err;
 543                 }
 544
 545                 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
 546                     (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
 547                         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
 558 int cfg80211_wext_siwencode(struct net_device *dev,
 559                             struct iw_request_info *info,
 560                             struct iw_point *erq, char *keybuf)
 561 {
 562         struct wireless_dev *wdev = dev->ieee80211_ptr;
 563         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 564         int idx, err;
 565         bool remove = false;
 566         struct key_params params;
 567
 568         /* no use -- only MFP (set_default_mgmt_key) is optional */
 569         if (!rdev->ops->del_key ||
 570             !rdev->ops->add_key ||
 571             !rdev->ops->set_default_key)
 572                 return -EOPNOTSUPP;
 573
 574         idx = erq->flags & IW_ENCODE_INDEX;
 575         if (idx == 0) {
 576                 idx = wdev->wext.default_key;
 577                 if (idx < 0)
 578                         idx = 0;
 579         } else if (idx < 1 || idx > 4)
 580                 return -EINVAL;
 581         else
 582                 idx--;
 583
 584         if (erq->flags & IW_ENCODE_DISABLED)
 585                 remove = true;
 586         else if (erq->length == 0) {
 587                 /* No key data - just set the default TX key index */
 588                 err = rdev->ops->set_default_key(&rdev->wiphy, dev, idx);
 589                 if (!err)
 590                         wdev->wext.default_key = idx;
 591                 return err;
 592         }
 593
 594         memset(&params, 0, sizeof(params));
 595         params.key = keybuf;
 596         params.key_len = erq->length;
 597         if (erq->length == 5)
 598                 params.cipher = WLAN_CIPHER_SUITE_WEP40;
 599         else if (erq->length == 13)
 600                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
 601         else if (!remove)
 602                 return -EINVAL;
 603
 604         return cfg80211_set_encryption(rdev, dev, NULL, remove,
 605                                        wdev->wext.default_key == -1,
 606                                        idx, &params);
 607 }
 608 EXPORT_SYMBOL_GPL(cfg80211_wext_siwencode);
 609
 610 int cfg80211_wext_siwencodeext(struct net_device *dev,
 611                                struct iw_request_info *info,
 612                                struct iw_point *erq, char *extra)
 613 {
 614         struct wireless_dev *wdev = dev->ieee80211_ptr;
 615         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 616         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
 617         const u8 *addr;
 618         int idx;
 619         bool remove = false;
 620         struct key_params params;
 621         u32 cipher;
 622
 623         /* no use -- only MFP (set_default_mgmt_key) is optional */
 624         if (!rdev->ops->del_key ||
 625             !rdev->ops->add_key ||
 626             !rdev->ops->set_default_key)
 627                 return -EOPNOTSUPP;
 628
 629         switch (ext->alg) {
 630         case IW_ENCODE_ALG_NONE:
 631                 remove = true;
 632                 cipher = 0;
 633                 break;
 634         case IW_ENCODE_ALG_WEP:
 635                 if (ext->key_len == 5)
 636                         cipher = WLAN_CIPHER_SUITE_WEP40;
 637                 else if (ext->key_len == 13)
 638                         cipher = WLAN_CIPHER_SUITE_WEP104;
 639                 else
 640                         return -EINVAL;
 641                 break;
 642         case IW_ENCODE_ALG_TKIP:
 643                 cipher = WLAN_CIPHER_SUITE_TKIP;
 644                 break;
 645         case IW_ENCODE_ALG_CCMP:
 646                 cipher = WLAN_CIPHER_SUITE_CCMP;
 647                 break;
 648         case IW_ENCODE_ALG_AES_CMAC:
 649                 cipher = WLAN_CIPHER_SUITE_AES_CMAC;
 650                 break;
 651         default:
 652                 return -EOPNOTSUPP;
 653         }
 654
 655         if (erq->flags & IW_ENCODE_DISABLED)
 656                 remove = true;
 657
 658         idx = erq->flags & IW_ENCODE_INDEX;
 659         if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 660                 if (idx < 4 || idx > 5) {
 661                         idx = wdev->wext.default_mgmt_key;
 662                         if (idx < 0)
 663                                 return -EINVAL;
 664                 } else
 665                         idx--;
 666         } else {
 667                 if (idx < 1 || idx > 4) {
 668                         idx = wdev->wext.default_key;
 669                         if (idx < 0)
 670                                 return -EINVAL;
 671                 } else
 672                         idx--;
 673         }
 674
 675         addr = ext->addr.sa_data;
 676         if (is_broadcast_ether_addr(addr))
 677                 addr = NULL;
 678
 679         memset(&params, 0, sizeof(params));
 680         params.key = ext->key;
 681         params.key_len = ext->key_len;
 682         params.cipher = cipher;
 683
 684         if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
 685                 params.seq = ext->rx_seq;
 686                 params.seq_len = 6;
 687         }
 688
 689         return cfg80211_set_encryption(
 690                         rdev, dev, addr, remove,
 691                         ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
 692                         idx, &params);
 693 }
 694 EXPORT_SYMBOL_GPL(cfg80211_wext_siwencodeext);
 695
 696 struct giwencode_cookie {
 697         size_t buflen;
 698         char *keybuf;
 699 };
 700
 701 static void giwencode_get_key_cb(void *cookie, struct key_params *params)
 702 {
 703         struct giwencode_cookie *data = cookie;
 704
 705         if (!params->key) {
 706                 data->buflen = 0;
 707                 return;
 708         }
 709
 710         data->buflen = min_t(size_t, data->buflen, params->key_len);
 711         memcpy(data->keybuf, params->key, data->buflen);
 712 }
 713
 714 int cfg80211_wext_giwencode(struct net_device *dev,
 715                             struct iw_request_info *info,
 716                             struct iw_point *erq, char *keybuf)
 717 {
 718         struct wireless_dev *wdev = dev->ieee80211_ptr;
 719         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 720         int idx, err;
 721         struct giwencode_cookie data = {
 722                 .keybuf = keybuf,
 723                 .buflen = erq->length,
 724         };
 725
 726         if (!rdev->ops->get_key)
 727                 return -EOPNOTSUPP;
 728
 729         idx = erq->flags & IW_ENCODE_INDEX;
 730         if (idx == 0) {
 731                 idx = wdev->wext.default_key;
 732                 if (idx < 0)
 733                         idx = 0;
 734         } else if (idx < 1 || idx > 4)
 735                 return -EINVAL;
 736         else
 737                 idx--;
 738
 739         erq->flags = idx + 1;
 740
 741         err = rdev->ops->get_key(&rdev->wiphy, dev, idx, NULL, &data,
 742                                  giwencode_get_key_cb);
 743         if (!err) {
 744                 erq->length = data.buflen;
 745                 erq->flags |= IW_ENCODE_ENABLED;
 746                 return 0;
 747         }
 748
 749         if (err == -ENOENT) {
 750                 erq->flags |= IW_ENCODE_DISABLED;
 751                 erq->length = 0;
 752                 return 0;
 753         }
 754
 755         return err;
 756 }
 757 EXPORT_SYMBOL_GPL(cfg80211_wext_giwencode);
 758
 759 int cfg80211_wext_siwtxpower(struct net_device *dev,
 760                              struct iw_request_info *info,
 761                              union iwreq_data *data, char *extra)
 762 {
 763         struct wireless_dev *wdev = dev->ieee80211_ptr;
 764         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 765         enum tx_power_setting type;
 766         int dbm = 0;
 767
 768         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 769                 return -EINVAL;
 770         if (data->txpower.flags & IW_TXPOW_RANGE)
 771                 return -EINVAL;
 772
 773         if (!rdev->ops->set_tx_power)
 774                 return -EOPNOTSUPP;
 775
 776         /* only change when not disabling */
 777         if (!data->txpower.disabled) {
 778                 rfkill_set_sw_state(rdev->rfkill, false);
 779
 780                 if (data->txpower.fixed) {
 781                         /*
 782                          * wext doesn't support negative values, see
 783                          * below where it's for automatic
 784                          */
 785                         if (data->txpower.value < 0)
 786                                 return -EINVAL;
 787                         dbm = data->txpower.value;
 788                         type = TX_POWER_FIXED;
 789                         /* TODO: do regulatory check! */
 790                 } else {
 791                         /*
 792                          * Automatic power level setting, max being the value
 793                          * passed in from userland.
 794                          */
 795                         if (data->txpower.value < 0) {
 796                                 type = TX_POWER_AUTOMATIC;
 797                         } else {
 798                                 dbm = data->txpower.value;
 799                                 type = TX_POWER_LIMITED;
 800                         }
 801                 }
 802         } else {
 803                 rfkill_set_sw_state(rdev->rfkill, true);
 804                 schedule_work(&rdev->rfkill_sync);
 805                 return 0;
 806         }
 807
 808         return rdev->ops->set_tx_power(wdev->wiphy, type, dbm);;
 809 }
 810 EXPORT_SYMBOL_GPL(cfg80211_wext_siwtxpower);
 811
 812 int cfg80211_wext_giwtxpower(struct net_device *dev,
 813                              struct iw_request_info *info,
 814                              union iwreq_data *data, char *extra)
 815 {
 816         struct wireless_dev *wdev = dev->ieee80211_ptr;
 817         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 818         int err, val;
 819
 820         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 821                 return -EINVAL;
 822         if (data->txpower.flags & IW_TXPOW_RANGE)
 823                 return -EINVAL;
 824
 825         if (!rdev->ops->get_tx_power)
 826                 return -EOPNOTSUPP;
 827
 828         err = rdev->ops->get_tx_power(wdev->wiphy, &val);
 829         if (err)
 830                 return err;
 831
 832         /* well... oh well */
 833         data->txpower.fixed = 1;
 834         data->txpower.disabled = rfkill_blocked(rdev->rfkill);
 835         data->txpower.value = val;
 836         data->txpower.flags = IW_TXPOW_DBM;
 837
 838         return 0;
 839 }
 840 EXPORT_SYMBOL_GPL(cfg80211_wext_giwtxpower);