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->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 (c = 0; c < wdev->wiphy->n_cipher_suites; c++) {
 205                 switch (wdev->wiphy->cipher_suites[c]) {
 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                 int i;
 230                 struct ieee80211_supported_band *sband;
 231
 232                 sband = wdev->wiphy->bands[band];
 233
 234                 if (!sband)
 235                         continue;
 236
 237                 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
 238                         struct ieee80211_channel *chan = &sband->channels[i];
 239
 240                         if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
 241                                 range->freq[c].i =
 242                                         ieee80211_frequency_to_channel(
 243                                                 chan->center_freq);
 244                                 range->freq[c].m = chan->center_freq;
 245                                 range->freq[c].e = 6;
 246                                 c++;
 247                         }
 248                 }
 249         }
 250         range->num_channels = c;
 251         range->num_frequency = c;
 252
 253         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 254         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 255         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
 256
 257         if (wdev->wiphy->max_scan_ssids > 0)
 258                 range->scan_capa |= IW_SCAN_CAPA_ESSID;
 259
 260         return 0;
 261 }
 262 EXPORT_SYMBOL_GPL(cfg80211_wext_giwrange);
 263
 264
 265 /**
 266  * cfg80211_wext_freq - get wext frequency for non-"auto"
 267  * @wiphy: the wiphy
 268  * @freq: the wext freq encoding
 269  *
 270  * Returns a channel, %NULL for auto, or an ERR_PTR for errors!
 271  */
 272 struct ieee80211_channel *cfg80211_wext_freq(struct wiphy *wiphy,
 273                                              struct iw_freq *freq)
 274 {
 275         struct ieee80211_channel *chan;
 276         int f;
 277
 278         /*
 279          * Parse frequency - return NULL for auto and
 280          * -EINVAL for impossible things.
 281          */
 282         if (freq->e == 0) {
 283                 if (freq->m < 0)
 284                         return NULL;
 285                 f = ieee80211_channel_to_frequency(freq->m);
 286         } else {
 287                 int i, div = 1000000;
 288                 for (i = 0; i < freq->e; i++)
 289                         div /= 10;
 290                 if (div <= 0)
 291                         return ERR_PTR(-EINVAL);
 292                 f = freq->m / div;
 293         }
 294
 295         /*
 296          * Look up channel struct and return -EINVAL when
 297          * it cannot be found.
 298          */
 299         chan = ieee80211_get_channel(wiphy, f);
 300         if (!chan)
 301                 return ERR_PTR(-EINVAL);
 302         return chan;
 303 }
 304 EXPORT_SYMBOL_GPL(cfg80211_wext_freq);
 305
 306 int cfg80211_wext_siwrts(struct net_device *dev,
 307                          struct iw_request_info *info,
 308                          struct iw_param *rts, char *extra)
 309 {
 310         struct wireless_dev *wdev = dev->ieee80211_ptr;
 311         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 312         u32 orts = wdev->wiphy->rts_threshold;
 313         int err;
 314
 315         if (rts->disabled || !rts->fixed)
 316                 wdev->wiphy->rts_threshold = (u32) -1;
 317         else if (rts->value < 0)
 318                 return -EINVAL;
 319         else
 320                 wdev->wiphy->rts_threshold = rts->value;
 321
 322         err = rdev->ops->set_wiphy_params(wdev->wiphy,
 323                                           WIPHY_PARAM_RTS_THRESHOLD);
 324         if (err)
 325                 wdev->wiphy->rts_threshold = orts;
 326
 327         return err;
 328 }
 329 EXPORT_SYMBOL_GPL(cfg80211_wext_siwrts);
 330
 331 int cfg80211_wext_giwrts(struct net_device *dev,
 332                          struct iw_request_info *info,
 333                          struct iw_param *rts, char *extra)
 334 {
 335         struct wireless_dev *wdev = dev->ieee80211_ptr;
 336
 337         rts->value = wdev->wiphy->rts_threshold;
 338         rts->disabled = rts->value == (u32) -1;
 339         rts->fixed = 1;
 340
 341         return 0;
 342 }
 343 EXPORT_SYMBOL_GPL(cfg80211_wext_giwrts);
 344
 345 int cfg80211_wext_siwfrag(struct net_device *dev,
 346                           struct iw_request_info *info,
 347                           struct iw_param *frag, char *extra)
 348 {
 349         struct wireless_dev *wdev = dev->ieee80211_ptr;
 350         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 351         u32 ofrag = wdev->wiphy->frag_threshold;
 352         int err;
 353
 354         if (frag->disabled || !frag->fixed)
 355                 wdev->wiphy->frag_threshold = (u32) -1;
 356         else if (frag->value < 256)
 357                 return -EINVAL;
 358         else {
 359                 /* Fragment length must be even, so strip LSB. */
 360                 wdev->wiphy->frag_threshold = frag->value & ~0x1;
 361         }
 362
 363         err = rdev->ops->set_wiphy_params(wdev->wiphy,
 364                                           WIPHY_PARAM_FRAG_THRESHOLD);
 365         if (err)
 366                 wdev->wiphy->frag_threshold = ofrag;
 367
 368         return err;
 369 }
 370 EXPORT_SYMBOL_GPL(cfg80211_wext_siwfrag);
 371
 372 int cfg80211_wext_giwfrag(struct net_device *dev,
 373                           struct iw_request_info *info,
 374                           struct iw_param *frag, char *extra)
 375 {
 376         struct wireless_dev *wdev = dev->ieee80211_ptr;
 377
 378         frag->value = wdev->wiphy->frag_threshold;
 379         frag->disabled = frag->value == (u32) -1;
 380         frag->fixed = 1;
 381
 382         return 0;
 383 }
 384 EXPORT_SYMBOL_GPL(cfg80211_wext_giwfrag);
 385
 386 int cfg80211_wext_siwretry(struct net_device *dev,
 387                            struct iw_request_info *info,
 388                            struct iw_param *retry, char *extra)
 389 {
 390         struct wireless_dev *wdev = dev->ieee80211_ptr;
 391         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 392         u32 changed = 0;
 393         u8 olong = wdev->wiphy->retry_long;
 394         u8 oshort = wdev->wiphy->retry_short;
 395         int err;
 396
 397         if (retry->disabled ||
 398             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 399                 return -EINVAL;
 400
 401         if (retry->flags & IW_RETRY_LONG) {
 402                 wdev->wiphy->retry_long = retry->value;
 403                 changed |= WIPHY_PARAM_RETRY_LONG;
 404         } else if (retry->flags & IW_RETRY_SHORT) {
 405                 wdev->wiphy->retry_short = retry->value;
 406                 changed |= WIPHY_PARAM_RETRY_SHORT;
 407         } else {
 408                 wdev->wiphy->retry_short = retry->value;
 409                 wdev->wiphy->retry_long = retry->value;
 410                 changed |= WIPHY_PARAM_RETRY_LONG;
 411                 changed |= WIPHY_PARAM_RETRY_SHORT;
 412         }
 413
 414         if (!changed)
 415                 return 0;
 416
 417         err = rdev->ops->set_wiphy_params(wdev->wiphy, changed);
 418         if (err) {
 419                 wdev->wiphy->retry_short = oshort;
 420                 wdev->wiphy->retry_long = olong;
 421         }
 422
 423         return err;
 424 }
 425 EXPORT_SYMBOL_GPL(cfg80211_wext_siwretry);
 426
 427 int cfg80211_wext_giwretry(struct net_device *dev,
 428                            struct iw_request_info *info,
 429                            struct iw_param *retry, char *extra)
 430 {
 431         struct wireless_dev *wdev = dev->ieee80211_ptr;
 432
 433         retry->disabled = 0;
 434
 435         if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
 436                 /*
 437                  * First return short value, iwconfig will ask long value
 438                  * later if needed
 439                  */
 440                 retry->flags |= IW_RETRY_LIMIT;
 441                 retry->value = wdev->wiphy->retry_short;
 442                 if (wdev->wiphy->retry_long != wdev->wiphy->retry_short)
 443                         retry->flags |= IW_RETRY_LONG;
 444
 445                 return 0;
 446         }
 447
 448         if (retry->flags & IW_RETRY_LONG) {
 449                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
 450                 retry->value = wdev->wiphy->retry_long;
 451         }
 452
 453         return 0;
 454 }
 455 EXPORT_SYMBOL_GPL(cfg80211_wext_giwretry);
 456
 457 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 458                                    struct net_device *dev, const u8 *addr,
 459                                    bool remove, bool tx_key, int idx,
 460                                    struct key_params *params)
 461 {
 462         struct wireless_dev *wdev = dev->ieee80211_ptr;
 463         int err;
 464
 465         if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 466                 if (!rdev->ops->set_default_mgmt_key)
 467                         return -EOPNOTSUPP;
 468
 469                 if (idx < 4 || idx > 5)
 470                         return -EINVAL;
 471         } else if (idx < 0 || idx > 3)
 472                 return -EINVAL;
 473
 474         if (remove) {
 475                 err = rdev->ops->del_key(&rdev->wiphy, dev, idx, addr);
 476                 if (!err) {
 477                         if (idx == wdev->wext.default_key)
 478                                 wdev->wext.default_key = -1;
 479                         else if (idx == wdev->wext.default_mgmt_key)
 480                                 wdev->wext.default_mgmt_key = -1;
 481                 }
 482                 /*
 483                  * Applications using wireless extensions expect to be
 484                  * able to delete keys that don't exist, so allow that.
 485                  */
 486                 if (err == -ENOENT)
 487                         return 0;
 488
 489                 return err;
 490         } else {
 491                 if (addr)
 492                         tx_key = false;
 493
 494                 if (cfg80211_validate_key_settings(params, idx, addr))
 495                         return -EINVAL;
 496
 497                 err = rdev->ops->add_key(&rdev->wiphy, dev, idx, addr, params);
 498                 if (err)
 499                         return err;
 500
 501                 if (tx_key || (!addr && wdev->wext.default_key == -1)) {
 502                         err = rdev->ops->set_default_key(&rdev->wiphy,
 503                                                          dev, idx);
 504                         if (!err)
 505                                 wdev->wext.default_key = idx;
 506                         return err;
 507                 }
 508
 509                 if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
 510                     (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
 511                         err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
 512                                                               dev, idx);
 513                         if (!err)
 514                                 wdev->wext.default_mgmt_key = idx;
 515                         return err;
 516                 }
 517
 518                 return 0;
 519         }
 520 }
 521
 522 int cfg80211_wext_siwencode(struct net_device *dev,
 523                             struct iw_request_info *info,
 524                             struct iw_point *erq, char *keybuf)
 525 {
 526         struct wireless_dev *wdev = dev->ieee80211_ptr;
 527         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 528         int idx, err;
 529         bool remove = false;
 530         struct key_params params;
 531
 532         /* no use -- only MFP (set_default_mgmt_key) is optional */
 533         if (!rdev->ops->del_key ||
 534             !rdev->ops->add_key ||
 535             !rdev->ops->set_default_key)
 536                 return -EOPNOTSUPP;
 537
 538         idx = erq->flags & IW_ENCODE_INDEX;
 539         if (idx == 0) {
 540                 idx = wdev->wext.default_key;
 541                 if (idx < 0)
 542                         idx = 0;
 543         } else if (idx < 1 || idx > 4)
 544                 return -EINVAL;
 545         else
 546                 idx--;
 547
 548         if (erq->flags & IW_ENCODE_DISABLED)
 549                 remove = true;
 550         else if (erq->length == 0) {
 551                 /* No key data - just set the default TX key index */
 552                 err = rdev->ops->set_default_key(&rdev->wiphy, dev, idx);
 553                 if (!err)
 554                         wdev->wext.default_key = idx;
 555                 return err;
 556         }
 557
 558         memset(&params, 0, sizeof(params));
 559         params.key = keybuf;
 560         params.key_len = erq->length;
 561         if (erq->length == 5)
 562                 params.cipher = WLAN_CIPHER_SUITE_WEP40;
 563         else if (erq->length == 13)
 564                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
 565         else if (!remove)
 566                 return -EINVAL;
 567
 568         return cfg80211_set_encryption(rdev, dev, NULL, remove,
 569                                        wdev->wext.default_key == -1,
 570                                        idx, &params);
 571 }
 572 EXPORT_SYMBOL_GPL(cfg80211_wext_siwencode);
 573
 574 int cfg80211_wext_siwencodeext(struct net_device *dev,
 575                                struct iw_request_info *info,
 576                                struct iw_point *erq, char *extra)
 577 {
 578         struct wireless_dev *wdev = dev->ieee80211_ptr;
 579         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 580         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
 581         const u8 *addr;
 582         int idx;
 583         bool remove = false;
 584         struct key_params params;
 585         u32 cipher;
 586
 587         /* no use -- only MFP (set_default_mgmt_key) is optional */
 588         if (!rdev->ops->del_key ||
 589             !rdev->ops->add_key ||
 590             !rdev->ops->set_default_key)
 591                 return -EOPNOTSUPP;
 592
 593         switch (ext->alg) {
 594         case IW_ENCODE_ALG_NONE:
 595                 remove = true;
 596                 cipher = 0;
 597                 break;
 598         case IW_ENCODE_ALG_WEP:
 599                 if (ext->key_len == 5)
 600                         cipher = WLAN_CIPHER_SUITE_WEP40;
 601                 else if (ext->key_len == 13)
 602                         cipher = WLAN_CIPHER_SUITE_WEP104;
 603                 else
 604                         return -EINVAL;
 605                 break;
 606         case IW_ENCODE_ALG_TKIP:
 607                 cipher = WLAN_CIPHER_SUITE_TKIP;
 608                 break;
 609         case IW_ENCODE_ALG_CCMP:
 610                 cipher = WLAN_CIPHER_SUITE_CCMP;
 611                 break;
 612         case IW_ENCODE_ALG_AES_CMAC:
 613                 cipher = WLAN_CIPHER_SUITE_AES_CMAC;
 614                 break;
 615         default:
 616                 return -EOPNOTSUPP;
 617         }
 618
 619         if (erq->flags & IW_ENCODE_DISABLED)
 620                 remove = true;
 621
 622         idx = erq->flags & IW_ENCODE_INDEX;
 623         if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 624                 if (idx < 4 || idx > 5) {
 625                         idx = wdev->wext.default_mgmt_key;
 626                         if (idx < 0)
 627                                 return -EINVAL;
 628                 } else
 629                         idx--;
 630         } else {
 631                 if (idx < 1 || idx > 4) {
 632                         idx = wdev->wext.default_key;
 633                         if (idx < 0)
 634                                 return -EINVAL;
 635                 } else
 636                         idx--;
 637         }
 638
 639         addr = ext->addr.sa_data;
 640         if (is_broadcast_ether_addr(addr))
 641                 addr = NULL;
 642
 643         memset(&params, 0, sizeof(params));
 644         params.key = ext->key;
 645         params.key_len = ext->key_len;
 646         params.cipher = cipher;
 647
 648         if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
 649                 params.seq = ext->rx_seq;
 650                 params.seq_len = 6;
 651         }
 652
 653         return cfg80211_set_encryption(
 654                         rdev, dev, addr, remove,
 655                         ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
 656                         idx, &params);
 657 }
 658 EXPORT_SYMBOL_GPL(cfg80211_wext_siwencodeext);
 659
 660 struct giwencode_cookie {
 661         size_t buflen;
 662         char *keybuf;
 663 };
 664
 665 static void giwencode_get_key_cb(void *cookie, struct key_params *params)
 666 {
 667         struct giwencode_cookie *data = cookie;
 668
 669         if (!params->key) {
 670                 data->buflen = 0;
 671                 return;
 672         }
 673
 674         data->buflen = min_t(size_t, data->buflen, params->key_len);
 675         memcpy(data->keybuf, params->key, data->buflen);
 676 }
 677
 678 int cfg80211_wext_giwencode(struct net_device *dev,
 679                             struct iw_request_info *info,
 680                             struct iw_point *erq, char *keybuf)
 681 {
 682         struct wireless_dev *wdev = dev->ieee80211_ptr;
 683         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 684         int idx, err;
 685         struct giwencode_cookie data = {
 686                 .keybuf = keybuf,
 687                 .buflen = erq->length,
 688         };
 689
 690         if (!rdev->ops->get_key)
 691                 return -EOPNOTSUPP;
 692
 693         idx = erq->flags & IW_ENCODE_INDEX;
 694         if (idx == 0) {
 695                 idx = wdev->wext.default_key;
 696                 if (idx < 0)
 697                         idx = 0;
 698         } else if (idx < 1 || idx > 4)
 699                 return -EINVAL;
 700         else
 701                 idx--;
 702
 703         erq->flags = idx + 1;
 704
 705         err = rdev->ops->get_key(&rdev->wiphy, dev, idx, NULL, &data,
 706                                  giwencode_get_key_cb);
 707         if (!err) {
 708                 erq->length = data.buflen;
 709                 erq->flags |= IW_ENCODE_ENABLED;
 710                 return 0;
 711         }
 712
 713         if (err == -ENOENT) {
 714                 erq->flags |= IW_ENCODE_DISABLED;
 715                 erq->length = 0;
 716                 return 0;
 717         }
 718
 719         return err;
 720 }
 721 EXPORT_SYMBOL_GPL(cfg80211_wext_giwencode);
 722
 723 int cfg80211_wext_siwtxpower(struct net_device *dev,
 724                              struct iw_request_info *info,
 725                              union iwreq_data *data, char *extra)
 726 {
 727         struct wireless_dev *wdev = dev->ieee80211_ptr;
 728         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 729         enum tx_power_setting type;
 730         int dbm = 0;
 731
 732         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 733                 return -EINVAL;
 734         if (data->txpower.flags & IW_TXPOW_RANGE)
 735                 return -EINVAL;
 736
 737         if (!rdev->ops->set_tx_power)
 738                 return -EOPNOTSUPP;
 739
 740         /* only change when not disabling */
 741         if (!data->txpower.disabled) {
 742                 rfkill_set_sw_state(rdev->rfkill, false);
 743
 744                 if (data->txpower.fixed) {
 745                         /*
 746                          * wext doesn't support negative values, see
 747                          * below where it's for automatic
 748                          */
 749                         if (data->txpower.value < 0)
 750                                 return -EINVAL;
 751                         dbm = data->txpower.value;
 752                         type = TX_POWER_FIXED;
 753                         /* TODO: do regulatory check! */
 754                 } else {
 755                         /*
 756                          * Automatic power level setting, max being the value
 757                          * passed in from userland.
 758                          */
 759                         if (data->txpower.value < 0) {
 760                                 type = TX_POWER_AUTOMATIC;
 761                         } else {
 762                                 dbm = data->txpower.value;
 763                                 type = TX_POWER_LIMITED;
 764                         }
 765                 }
 766         } else {
 767                 rfkill_set_sw_state(rdev->rfkill, true);
 768                 schedule_work(&rdev->rfkill_sync);
 769                 return 0;
 770         }
 771
 772         return rdev->ops->set_tx_power(wdev->wiphy, type, dbm);;
 773 }
 774 EXPORT_SYMBOL_GPL(cfg80211_wext_siwtxpower);
 775
 776 int cfg80211_wext_giwtxpower(struct net_device *dev,
 777                              struct iw_request_info *info,
 778                              union iwreq_data *data, char *extra)
 779 {
 780         struct wireless_dev *wdev = dev->ieee80211_ptr;
 781         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 782         int err, val;
 783
 784         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 785                 return -EINVAL;
 786         if (data->txpower.flags & IW_TXPOW_RANGE)
 787                 return -EINVAL;
 788
 789         if (!rdev->ops->get_tx_power)
 790                 return -EOPNOTSUPP;
 791
 792         err = rdev->ops->get_tx_power(wdev->wiphy, &val);
 793         if (err)
 794                 return err;
 795
 796         /* well... oh well */
 797         data->txpower.fixed = 1;
 798         data->txpower.disabled = rfkill_blocked(rdev->rfkill);
 799         data->txpower.value = val;
 800         data->txpower.flags = IW_TXPOW_DBM;
 801
 802         return 0;
 803 }
 804 EXPORT_SYMBOL_GPL(cfg80211_wext_giwtxpower);
 805
 806 static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
 807                                  s32 auth_alg)
 808 {
 809         int nr_alg = 0;
 810
 811         if (!auth_alg)
 812                 return -EINVAL;
 813
 814         if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
 815                          IW_AUTH_ALG_SHARED_KEY |
 816                          IW_AUTH_ALG_LEAP))
 817                 return -EINVAL;
 818
 819         if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
 820                 nr_alg++;
 821                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 822         }
 823
 824         if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
 825                 nr_alg++;
 826                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
 827         }
 828
 829         if (auth_alg & IW_AUTH_ALG_LEAP) {
 830                 nr_alg++;
 831                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
 832         }
 833
 834         if (nr_alg > 1)
 835                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
 836
 837         return 0;
 838 }
 839
 840 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
 841 {
 842         wdev->wext.connect.crypto.wpa_versions = 0;
 843
 844         if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
 845                              IW_AUTH_WPA_VERSION_WPA2))
 846                 return -EINVAL;
 847
 848         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
 849                 wdev->wext.connect.crypto.wpa_versions |=
 850                         NL80211_WPA_VERSION_1;
 851
 852         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
 853                 wdev->wext.connect.crypto.wpa_versions |=
 854                         NL80211_WPA_VERSION_2;
 855
 856         return 0;
 857 }
 858
 859 int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
 860 {
 861         wdev->wext.connect.crypto.cipher_group = 0;
 862
 863         if (cipher & IW_AUTH_CIPHER_WEP40)
 864                 wdev->wext.connect.crypto.cipher_group =
 865                         WLAN_CIPHER_SUITE_WEP40;
 866         else if (cipher & IW_AUTH_CIPHER_WEP104)
 867                 wdev->wext.connect.crypto.cipher_group =
 868                         WLAN_CIPHER_SUITE_WEP104;
 869         else if (cipher & IW_AUTH_CIPHER_TKIP)
 870                 wdev->wext.connect.crypto.cipher_group =
 871                         WLAN_CIPHER_SUITE_TKIP;
 872         else if (cipher & IW_AUTH_CIPHER_CCMP)
 873                 wdev->wext.connect.crypto.cipher_group =
 874                         WLAN_CIPHER_SUITE_CCMP;
 875         else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
 876                 wdev->wext.connect.crypto.cipher_group =
 877                         WLAN_CIPHER_SUITE_AES_CMAC;
 878         else
 879                 return -EINVAL;
 880
 881         return 0;
 882 }
 883
 884 int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
 885 {
 886         int nr_ciphers = 0;
 887         u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
 888
 889         if (cipher & IW_AUTH_CIPHER_WEP40) {
 890                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
 891                 nr_ciphers++;
 892         }
 893
 894         if (cipher & IW_AUTH_CIPHER_WEP104) {
 895                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
 896                 nr_ciphers++;
 897         }
 898
 899         if (cipher & IW_AUTH_CIPHER_TKIP) {
 900                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
 901                 nr_ciphers++;
 902         }
 903
 904         if (cipher & IW_AUTH_CIPHER_CCMP) {
 905                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
 906                 nr_ciphers++;
 907         }
 908
 909         if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
 910                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
 911                 nr_ciphers++;
 912         }
 913
 914         BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
 915
 916         wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
 917
 918         return 0;
 919 }
 920
 921
 922 int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
 923 {
 924         int nr_akm_suites = 0;
 925
 926         if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
 927                         IW_AUTH_KEY_MGMT_PSK))
 928                 return -EINVAL;
 929
 930         if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
 931                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
 932                         WLAN_AKM_SUITE_8021X;
 933                 nr_akm_suites++;
 934         }
 935
 936         if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
 937                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
 938                         WLAN_AKM_SUITE_PSK;
 939                 nr_akm_suites++;
 940         }
 941
 942         wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
 943
 944         return 0;
 945 }
 946
 947 int cfg80211_wext_siwauth(struct net_device *dev,
 948                           struct iw_request_info *info,
 949                           struct iw_param *data, char *extra)
 950 {
 951         struct wireless_dev *wdev = dev->ieee80211_ptr;
 952
 953         if (wdev->iftype != NL80211_IFTYPE_STATION)
 954                 return -EOPNOTSUPP;
 955
 956         switch (data->flags & IW_AUTH_INDEX) {
 957         case IW_AUTH_PRIVACY_INVOKED:
 958                 wdev->wext.connect.privacy = data->value;
 959                 return 0;
 960         case IW_AUTH_WPA_VERSION:
 961                 return cfg80211_set_wpa_version(wdev, data->value);
 962         case IW_AUTH_CIPHER_GROUP:
 963                 return cfg80211_set_cipher_group(wdev, data->value);
 964         case IW_AUTH_KEY_MGMT:
 965                 return cfg80211_set_key_mgt(wdev, data->value);
 966         case IW_AUTH_CIPHER_PAIRWISE:
 967                 return cfg80211_set_cipher_pairwise(wdev, data->value);
 968         case IW_AUTH_80211_AUTH_ALG:
 969                 return cfg80211_set_auth_alg(wdev, data->value);
 970         case IW_AUTH_WPA_ENABLED:
 971         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
 972         case IW_AUTH_DROP_UNENCRYPTED:
 973         case IW_AUTH_MFP:
 974                 return 0;
 975         default:
 976                 return -EOPNOTSUPP;
 977         }
 978 }
 979 EXPORT_SYMBOL_GPL(cfg80211_wext_siwauth);
 980
 981 int cfg80211_wext_giwauth(struct net_device *dev,
 982                           struct iw_request_info *info,
 983                           struct iw_param *data, char *extra)
 984 {
 985         /* XXX: what do we need? */
 986
 987         return -EOPNOTSUPP;
 988 }
 989 EXPORT_SYMBOL_GPL(cfg80211_wext_giwauth);
 990
 991 int cfg80211_wext_siwpower(struct net_device *dev,
 992                            struct iw_request_info *info,
 993                            struct iw_param *wrq, char *extra)
 994 {
 995         struct wireless_dev *wdev = dev->ieee80211_ptr;
 996         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 997         bool ps = wdev->wext.ps;
 998         int timeout = wdev->wext.ps_timeout;
 999         int err;
1000
1001         if (wdev->iftype != NL80211_IFTYPE_STATION)
1002                 return -EINVAL;
1003
1004         if (!rdev->ops->set_power_mgmt)
1005                 return -EOPNOTSUPP;
1006
1007         if (wrq->disabled) {
1008                 ps = false;
1009         } else {
1010                 switch (wrq->flags & IW_POWER_MODE) {
1011                 case IW_POWER_ON:       /* If not specified */
1012                 case IW_POWER_MODE:     /* If set all mask */
1013                 case IW_POWER_ALL_R:    /* If explicitely state all */
1014                         ps = true;
1015                         break;
1016                 default:                /* Otherwise we ignore */
1017                         return -EINVAL;
1018                 }
1019
1020                 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1021                         return -EINVAL;
1022
1023                 if (wrq->flags & IW_POWER_TIMEOUT)
1024                         timeout = wrq->value / 1000;
1025         }
1026
1027         err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, ps, timeout);
1028         if (err)
1029                 return err;
1030
1031         wdev->wext.ps = ps;
1032         wdev->wext.ps_timeout = timeout;
1033
1034         return 0;
1035
1036 }
1037 EXPORT_SYMBOL_GPL(cfg80211_wext_siwpower);
1038
1039 int cfg80211_wext_giwpower(struct net_device *dev,
1040                            struct iw_request_info *info,
1041                            struct iw_param *wrq, char *extra)
1042 {
1043         struct wireless_dev *wdev = dev->ieee80211_ptr;
1044
1045         wrq->disabled = !wdev->wext.ps;
1046
1047         return 0;
1048 }
1049 EXPORT_SYMBOL_GPL(cfg80211_wext_giwpower);
1050
1051 int cfg80211_wds_wext_siwap(struct net_device *dev,
1052                             struct iw_request_info *info,
1053                             struct sockaddr *addr, char *extra)
1054 {
1055         struct wireless_dev *wdev = dev->ieee80211_ptr;
1056         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
1057         int err;
1058
1059         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1060                 return -EINVAL;
1061
1062         if (addr->sa_family != ARPHRD_ETHER)
1063                 return -EINVAL;
1064
1065         if (netif_running(dev))
1066                 return -EBUSY;
1067
1068         if (!rdev->ops->set_wds_peer)
1069                 return -EOPNOTSUPP;
1070
1071         err = rdev->ops->set_wds_peer(wdev->wiphy, dev, (u8 *) &addr->sa_data);
1072         if (err)
1073                 return err;
1074
1075         memcpy(&wdev->wext.bssid, (u8 *) &addr->sa_data, ETH_ALEN);
1076
1077         return 0;
1078 }
1079 EXPORT_SYMBOL_GPL(cfg80211_wds_wext_siwap);
1080
1081 int cfg80211_wds_wext_giwap(struct net_device *dev,
1082                             struct iw_request_info *info,
1083                             struct sockaddr *addr, char *extra)
1084 {
1085         struct wireless_dev *wdev = dev->ieee80211_ptr;
1086
1087         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1088                 return -EINVAL;
1089
1090         addr->sa_family = ARPHRD_ETHER;
1091         memcpy(&addr->sa_data, wdev->wext.bssid, ETH_ALEN);
1092
1093         return 0;
1094 }
1095 EXPORT_SYMBOL_GPL(cfg80211_wds_wext_giwap);