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/export.h>
  12 #include <linux/wireless.h>
  13 #include <linux/nl80211.h>
  14 #include <linux/if_arp.h>
  15 #include <linux/etherdevice.h>
  16 #include <linux/slab.h>
  17 #include <net/iw_handler.h>
  18 #include <net/cfg80211.h>
  19 #include <net/cfg80211-wext.h>
  20 #include "wext-compat.h"
  21 #include "core.h"
  22 #include "rdev-ops.h"
  23
  24 int cfg80211_wext_giwname(struct net_device *dev,
  25                           struct iw_request_info *info,
  26                           char *name, char *extra)
  27 {
  28         strcpy(name, "IEEE 802.11");
  29         return 0;
  30 }
  31 EXPORT_WEXT_HANDLER(cfg80211_wext_giwname);
  32
  33 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
  34                           u32 *mode, char *extra)
  35 {
  36         struct wireless_dev *wdev = dev->ieee80211_ptr;
  37         struct cfg80211_registered_device *rdev;
  38         struct vif_params vifparams;
  39         enum nl80211_iftype type;
  40
  41         rdev = wiphy_to_rdev(wdev->wiphy);
  42
  43         switch (*mode) {
  44         case IW_MODE_INFRA:
  45                 type = NL80211_IFTYPE_STATION;
  46                 break;
  47         case IW_MODE_ADHOC:
  48                 type = NL80211_IFTYPE_ADHOC;
  49                 break;
  50         case IW_MODE_REPEAT:
  51                 type = NL80211_IFTYPE_WDS;
  52                 break;
  53         case IW_MODE_MONITOR:
  54                 type = NL80211_IFTYPE_MONITOR;
  55                 break;
  56         default:
  57                 return -EINVAL;
  58         }
  59
  60         if (type == wdev->iftype)
  61                 return 0;
  62
  63         memset(&vifparams, 0, sizeof(vifparams));
  64
  65         return cfg80211_change_iface(rdev, dev, type, NULL, &vifparams);
  66 }
  67 EXPORT_WEXT_HANDLER(cfg80211_wext_siwmode);
  68
  69 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
  70                           u32 *mode, char *extra)
  71 {
  72         struct wireless_dev *wdev = dev->ieee80211_ptr;
  73
  74         if (!wdev)
  75                 return -EOPNOTSUPP;
  76
  77         switch (wdev->iftype) {
  78         case NL80211_IFTYPE_AP:
  79                 *mode = IW_MODE_MASTER;
  80                 break;
  81         case NL80211_IFTYPE_STATION:
  82                 *mode = IW_MODE_INFRA;
  83                 break;
  84         case NL80211_IFTYPE_ADHOC:
  85                 *mode = IW_MODE_ADHOC;
  86                 break;
  87         case NL80211_IFTYPE_MONITOR:
  88                 *mode = IW_MODE_MONITOR;
  89                 break;
  90         case NL80211_IFTYPE_WDS:
  91                 *mode = IW_MODE_REPEAT;
  92                 break;
  93         case NL80211_IFTYPE_AP_VLAN:
  94                 *mode = IW_MODE_SECOND;         /* FIXME */
  95                 break;
  96         default:
  97                 *mode = IW_MODE_AUTO;
  98                 break;
  99         }
 100         return 0;
 101 }
 102 EXPORT_WEXT_HANDLER(cfg80211_wext_giwmode);
 103
 104
 105 int cfg80211_wext_giwrange(struct net_device *dev,
 106                            struct iw_request_info *info,
 107                            struct iw_point *data, char *extra)
 108 {
 109         struct wireless_dev *wdev = dev->ieee80211_ptr;
 110         struct iw_range *range = (struct iw_range *) extra;
 111         enum nl80211_band band;
 112         int i, c = 0;
 113
 114         if (!wdev)
 115                 return -EOPNOTSUPP;
 116
 117         data->length = sizeof(struct iw_range);
 118         memset(range, 0, sizeof(struct iw_range));
 119
 120         range->we_version_compiled = WIRELESS_EXT;
 121         range->we_version_source = 21;
 122         range->retry_capa = IW_RETRY_LIMIT;
 123         range->retry_flags = IW_RETRY_LIMIT;
 124         range->min_retry = 0;
 125         range->max_retry = 255;
 126         range->min_rts = 0;
 127         range->max_rts = 2347;
 128         range->min_frag = 256;
 129         range->max_frag = 2346;
 130
 131         range->max_encoding_tokens = 4;
 132
 133         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
 134
 135         switch (wdev->wiphy->signal_type) {
 136         case CFG80211_SIGNAL_TYPE_NONE:
 137                 break;
 138         case CFG80211_SIGNAL_TYPE_MBM:
 139                 range->max_qual.level = (u8)-110;
 140                 range->max_qual.qual = 70;
 141                 range->avg_qual.qual = 35;
 142                 range->max_qual.updated |= IW_QUAL_DBM;
 143                 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 144                 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 145                 break;
 146         case CFG80211_SIGNAL_TYPE_UNSPEC:
 147                 range->max_qual.level = 100;
 148                 range->max_qual.qual = 100;
 149                 range->avg_qual.qual = 50;
 150                 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 151                 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 152                 break;
 153         }
 154
 155         range->avg_qual.level = range->max_qual.level / 2;
 156         range->avg_qual.noise = range->max_qual.noise / 2;
 157         range->avg_qual.updated = range->max_qual.updated;
 158
 159         for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) {
 160                 switch (wdev->wiphy->cipher_suites[i]) {
 161                 case WLAN_CIPHER_SUITE_TKIP:
 162                         range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
 163                                             IW_ENC_CAPA_WPA);
 164                         break;
 165
 166                 case WLAN_CIPHER_SUITE_CCMP:
 167                         range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
 168                                             IW_ENC_CAPA_WPA2);
 169                         break;
 170
 171                 case WLAN_CIPHER_SUITE_WEP40:
 172                         range->encoding_size[range->num_encoding_sizes++] =
 173                                 WLAN_KEY_LEN_WEP40;
 174                         break;
 175
 176                 case WLAN_CIPHER_SUITE_WEP104:
 177                         range->encoding_size[range->num_encoding_sizes++] =
 178                                 WLAN_KEY_LEN_WEP104;
 179                         break;
 180                 }
 181         }
 182
 183         for (band = 0; band < NUM_NL80211_BANDS; band ++) {
 184                 struct ieee80211_supported_band *sband;
 185
 186                 sband = wdev->wiphy->bands[band];
 187
 188                 if (!sband)
 189                         continue;
 190
 191                 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
 192                         struct ieee80211_channel *chan = &sband->channels[i];
 193
 194                         if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
 195                                 range->freq[c].i =
 196                                         ieee80211_frequency_to_channel(
 197                                                 chan->center_freq);
 198                                 range->freq[c].m = chan->center_freq;
 199                                 range->freq[c].e = 6;
 200                                 c++;
 201                         }
 202                 }
 203         }
 204         range->num_channels = c;
 205         range->num_frequency = c;
 206
 207         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 208         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 209         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
 210
 211         if (wdev->wiphy->max_scan_ssids > 0)
 212                 range->scan_capa |= IW_SCAN_CAPA_ESSID;
 213
 214         return 0;
 215 }
 216 EXPORT_WEXT_HANDLER(cfg80211_wext_giwrange);
 217
 218
 219 /**
 220  * cfg80211_wext_freq - get wext frequency for non-"auto"
 221  * @dev: the net device
 222  * @freq: the wext freq encoding
 223  *
 224  * Returns a frequency, or a negative error code, or 0 for auto.
 225  */
 226 int cfg80211_wext_freq(struct iw_freq *freq)
 227 {
 228         /*
 229          * Parse frequency - return 0 for auto and
 230          * -EINVAL for impossible things.
 231          */
 232         if (freq->e == 0) {
 233                 enum nl80211_band band = NL80211_BAND_2GHZ;
 234                 if (freq->m < 0)
 235                         return 0;
 236                 if (freq->m > 14)
 237                         band = NL80211_BAND_5GHZ;
 238                 return ieee80211_channel_to_frequency(freq->m, band);
 239         } else {
 240                 int i, div = 1000000;
 241                 for (i = 0; i < freq->e; i++)
 242                         div /= 10;
 243                 if (div <= 0)
 244                         return -EINVAL;
 245                 return freq->m / div;
 246         }
 247 }
 248
 249 int cfg80211_wext_siwrts(struct net_device *dev,
 250                          struct iw_request_info *info,
 251                          struct iw_param *rts, char *extra)
 252 {
 253         struct wireless_dev *wdev = dev->ieee80211_ptr;
 254         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 255         u32 orts = wdev->wiphy->rts_threshold;
 256         int err;
 257
 258         if (rts->disabled || !rts->fixed)
 259                 wdev->wiphy->rts_threshold = (u32) -1;
 260         else if (rts->value < 0)
 261                 return -EINVAL;
 262         else
 263                 wdev->wiphy->rts_threshold = rts->value;
 264
 265         err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_RTS_THRESHOLD);
 266         if (err)
 267                 wdev->wiphy->rts_threshold = orts;
 268
 269         return err;
 270 }
 271 EXPORT_WEXT_HANDLER(cfg80211_wext_siwrts);
 272
 273 int cfg80211_wext_giwrts(struct net_device *dev,
 274                          struct iw_request_info *info,
 275                          struct iw_param *rts, char *extra)
 276 {
 277         struct wireless_dev *wdev = dev->ieee80211_ptr;
 278
 279         rts->value = wdev->wiphy->rts_threshold;
 280         rts->disabled = rts->value == (u32) -1;
 281         rts->fixed = 1;
 282
 283         return 0;
 284 }
 285 EXPORT_WEXT_HANDLER(cfg80211_wext_giwrts);
 286
 287 int cfg80211_wext_siwfrag(struct net_device *dev,
 288                           struct iw_request_info *info,
 289                           struct iw_param *frag, char *extra)
 290 {
 291         struct wireless_dev *wdev = dev->ieee80211_ptr;
 292         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 293         u32 ofrag = wdev->wiphy->frag_threshold;
 294         int err;
 295
 296         if (frag->disabled || !frag->fixed)
 297                 wdev->wiphy->frag_threshold = (u32) -1;
 298         else if (frag->value < 256)
 299                 return -EINVAL;
 300         else {
 301                 /* Fragment length must be even, so strip LSB. */
 302                 wdev->wiphy->frag_threshold = frag->value & ~0x1;
 303         }
 304
 305         err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_FRAG_THRESHOLD);
 306         if (err)
 307                 wdev->wiphy->frag_threshold = ofrag;
 308
 309         return err;
 310 }
 311 EXPORT_WEXT_HANDLER(cfg80211_wext_siwfrag);
 312
 313 int cfg80211_wext_giwfrag(struct net_device *dev,
 314                           struct iw_request_info *info,
 315                           struct iw_param *frag, char *extra)
 316 {
 317         struct wireless_dev *wdev = dev->ieee80211_ptr;
 318
 319         frag->value = wdev->wiphy->frag_threshold;
 320         frag->disabled = frag->value == (u32) -1;
 321         frag->fixed = 1;
 322
 323         return 0;
 324 }
 325 EXPORT_WEXT_HANDLER(cfg80211_wext_giwfrag);
 326
 327 static int cfg80211_wext_siwretry(struct net_device *dev,
 328                                   struct iw_request_info *info,
 329                                   struct iw_param *retry, char *extra)
 330 {
 331         struct wireless_dev *wdev = dev->ieee80211_ptr;
 332         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 333         u32 changed = 0;
 334         u8 olong = wdev->wiphy->retry_long;
 335         u8 oshort = wdev->wiphy->retry_short;
 336         int err;
 337
 338         if (retry->disabled || retry->value < 1 || retry->value > 255 ||
 339             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 340                 return -EINVAL;
 341
 342         if (retry->flags & IW_RETRY_LONG) {
 343                 wdev->wiphy->retry_long = retry->value;
 344                 changed |= WIPHY_PARAM_RETRY_LONG;
 345         } else if (retry->flags & IW_RETRY_SHORT) {
 346                 wdev->wiphy->retry_short = retry->value;
 347                 changed |= WIPHY_PARAM_RETRY_SHORT;
 348         } else {
 349                 wdev->wiphy->retry_short = retry->value;
 350                 wdev->wiphy->retry_long = retry->value;
 351                 changed |= WIPHY_PARAM_RETRY_LONG;
 352                 changed |= WIPHY_PARAM_RETRY_SHORT;
 353         }
 354
 355         if (!changed)
 356                 return 0;
 357
 358         err = rdev_set_wiphy_params(rdev, changed);
 359         if (err) {
 360                 wdev->wiphy->retry_short = oshort;
 361                 wdev->wiphy->retry_long = olong;
 362         }
 363
 364         return err;
 365 }
 366
 367 int cfg80211_wext_giwretry(struct net_device *dev,
 368                            struct iw_request_info *info,
 369                            struct iw_param *retry, char *extra)
 370 {
 371         struct wireless_dev *wdev = dev->ieee80211_ptr;
 372
 373         retry->disabled = 0;
 374
 375         if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
 376                 /*
 377                  * First return short value, iwconfig will ask long value
 378                  * later if needed
 379                  */
 380                 retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT;
 381                 retry->value = wdev->wiphy->retry_short;
 382                 if (wdev->wiphy->retry_long == wdev->wiphy->retry_short)
 383                         retry->flags |= IW_RETRY_LONG;
 384
 385                 return 0;
 386         }
 387
 388         if (retry->flags & IW_RETRY_LONG) {
 389                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
 390                 retry->value = wdev->wiphy->retry_long;
 391         }
 392
 393         return 0;
 394 }
 395 EXPORT_WEXT_HANDLER(cfg80211_wext_giwretry);
 396
 397 static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 398                                      struct net_device *dev, bool pairwise,
 399                                      const u8 *addr, bool remove, bool tx_key,
 400                                      int idx, struct key_params *params)
 401 {
 402         struct wireless_dev *wdev = dev->ieee80211_ptr;
 403         int err, i;
 404         bool rejoin = false;
 405
 406         if (pairwise && !addr)
 407                 return -EINVAL;
 408
 409         /*
 410          * In many cases we won't actually need this, but it's better
 411          * to do it first in case the allocation fails. Don't use wext.
 412          */
 413         if (!wdev->wext.keys) {
 414                 wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys),
 415                                           GFP_KERNEL);
 416                 if (!wdev->wext.keys)
 417                         return -ENOMEM;
 418                 for (i = 0; i < 4; i++)
 419                         wdev->wext.keys->params[i].key =
 420                                 wdev->wext.keys->data[i];
 421         }
 422
 423         if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
 424             wdev->iftype != NL80211_IFTYPE_STATION)
 425                 return -EOPNOTSUPP;
 426
 427         if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 428                 if (!wdev->current_bss)
 429                         return -ENOLINK;
 430
 431                 if (!rdev->ops->set_default_mgmt_key)
 432                         return -EOPNOTSUPP;
 433
 434                 if (idx < 4 || idx > 5)
 435                         return -EINVAL;
 436         } else if (idx < 0 || idx > 3)
 437                 return -EINVAL;
 438
 439         if (remove) {
 440                 err = 0;
 441                 if (wdev->current_bss) {
 442                         /*
 443                          * If removing the current TX key, we will need to
 444                          * join a new IBSS without the privacy bit clear.
 445                          */
 446                         if (idx == wdev->wext.default_key &&
 447                             wdev->iftype == NL80211_IFTYPE_ADHOC) {
 448                                 __cfg80211_leave_ibss(rdev, wdev->netdev, true);
 449                                 rejoin = true;
 450                         }
 451
 452                         if (!pairwise && addr &&
 453                             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
 454                                 err = -ENOENT;
 455                         else
 456                                 err = rdev_del_key(rdev, dev, idx, pairwise,
 457                                                    addr);
 458                 }
 459                 wdev->wext.connect.privacy = false;
 460                 /*
 461                  * Applications using wireless extensions expect to be
 462                  * able to delete keys that don't exist, so allow that.
 463                  */
 464                 if (err == -ENOENT)
 465                         err = 0;
 466                 if (!err) {
 467                         if (!addr && idx < 4) {
 468                                 memset(wdev->wext.keys->data[idx], 0,
 469                                        sizeof(wdev->wext.keys->data[idx]));
 470                                 wdev->wext.keys->params[idx].key_len = 0;
 471                                 wdev->wext.keys->params[idx].cipher = 0;
 472                         }
 473                         if (idx == wdev->wext.default_key)
 474                                 wdev->wext.default_key = -1;
 475                         else if (idx == wdev->wext.default_mgmt_key)
 476                                 wdev->wext.default_mgmt_key = -1;
 477                 }
 478
 479                 if (!err && rejoin)
 480                         err = cfg80211_ibss_wext_join(rdev, wdev);
 481
 482                 return err;
 483         }
 484
 485         if (addr)
 486                 tx_key = false;
 487
 488         if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr))
 489                 return -EINVAL;
 490
 491         err = 0;
 492         if (wdev->current_bss)
 493                 err = rdev_add_key(rdev, dev, idx, pairwise, addr, params);
 494         else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 &&
 495                  params->cipher != WLAN_CIPHER_SUITE_WEP104)
 496                 return -EINVAL;
 497         if (err)
 498                 return err;
 499
 500         /*
 501          * We only need to store WEP keys, since they're the only keys that
 502          * can be be set before a connection is established and persist after
 503          * disconnecting.
 504          */
 505         if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 506                       params->cipher == WLAN_CIPHER_SUITE_WEP104)) {
 507                 wdev->wext.keys->params[idx] = *params;
 508                 memcpy(wdev->wext.keys->data[idx],
 509                         params->key, params->key_len);
 510                 wdev->wext.keys->params[idx].key =
 511                         wdev->wext.keys->data[idx];
 512         }
 513
 514         if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 515              params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 516             (tx_key || (!addr && wdev->wext.default_key == -1))) {
 517                 if (wdev->current_bss) {
 518                         /*
 519                          * If we are getting a new TX key from not having
 520                          * had one before we need to join a new IBSS with
 521                          * the privacy bit set.
 522                          */
 523                         if (wdev->iftype == NL80211_IFTYPE_ADHOC &&
 524                             wdev->wext.default_key == -1) {
 525                                 __cfg80211_leave_ibss(rdev, wdev->netdev, true);
 526                                 rejoin = true;
 527                         }
 528                         err = rdev_set_default_key(rdev, dev, idx, true, true);
 529                 }
 530                 if (!err) {
 531                         wdev->wext.default_key = idx;
 532                         if (rejoin)
 533                                 err = cfg80211_ibss_wext_join(rdev, wdev);
 534                 }
 535                 return err;
 536         }
 537
 538         if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
 539             (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
 540                 if (wdev->current_bss)
 541                         err = rdev_set_default_mgmt_key(rdev, dev, idx);
 542                 if (!err)
 543                         wdev->wext.default_mgmt_key = idx;
 544                 return err;
 545         }
 546
 547         return 0;
 548 }
 549
 550 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 551                                    struct net_device *dev, bool pairwise,
 552                                    const u8 *addr, bool remove, bool tx_key,
 553                                    int idx, struct key_params *params)
 554 {
 555         int err;
 556
 557         wdev_lock(dev->ieee80211_ptr);
 558         err = __cfg80211_set_encryption(rdev, dev, pairwise, addr,
 559                                         remove, tx_key, idx, params);
 560         wdev_unlock(dev->ieee80211_ptr);
 561
 562         return err;
 563 }
 564
 565 static int cfg80211_wext_siwencode(struct net_device *dev,
 566                                    struct iw_request_info *info,
 567                                    struct iw_point *erq, char *keybuf)
 568 {
 569         struct wireless_dev *wdev = dev->ieee80211_ptr;
 570         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 571         int idx, err;
 572         bool remove = false;
 573         struct key_params params;
 574
 575         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 576             wdev->iftype != NL80211_IFTYPE_ADHOC)
 577                 return -EOPNOTSUPP;
 578
 579         /* no use -- only MFP (set_default_mgmt_key) is optional */
 580         if (!rdev->ops->del_key ||
 581             !rdev->ops->add_key ||
 582             !rdev->ops->set_default_key)
 583                 return -EOPNOTSUPP;
 584
 585         idx = erq->flags & IW_ENCODE_INDEX;
 586         if (idx == 0) {
 587                 idx = wdev->wext.default_key;
 588                 if (idx < 0)
 589                         idx = 0;
 590         } else if (idx < 1 || idx > 4)
 591                 return -EINVAL;
 592         else
 593                 idx--;
 594
 595         if (erq->flags & IW_ENCODE_DISABLED)
 596                 remove = true;
 597         else if (erq->length == 0) {
 598                 /* No key data - just set the default TX key index */
 599                 err = 0;
 600                 wdev_lock(wdev);
 601                 if (wdev->current_bss)
 602                         err = rdev_set_default_key(rdev, dev, idx, true,
 603                                                    true);
 604                 if (!err)
 605                         wdev->wext.default_key = idx;
 606                 wdev_unlock(wdev);
 607                 return err;
 608         }
 609
 610         memset(&params, 0, sizeof(params));
 611         params.key = keybuf;
 612         params.key_len = erq->length;
 613         if (erq->length == 5)
 614                 params.cipher = WLAN_CIPHER_SUITE_WEP40;
 615         else if (erq->length == 13)
 616                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
 617         else if (!remove)
 618                 return -EINVAL;
 619
 620         return cfg80211_set_encryption(rdev, dev, false, NULL, remove,
 621                                        wdev->wext.default_key == -1,
 622                                        idx, &params);
 623 }
 624
 625 static int cfg80211_wext_siwencodeext(struct net_device *dev,
 626                                       struct iw_request_info *info,
 627                                       struct iw_point *erq, char *extra)
 628 {
 629         struct wireless_dev *wdev = dev->ieee80211_ptr;
 630         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 631         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
 632         const u8 *addr;
 633         int idx;
 634         bool remove = false;
 635         struct key_params params;
 636         u32 cipher;
 637
 638         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 639             wdev->iftype != NL80211_IFTYPE_ADHOC)
 640                 return -EOPNOTSUPP;
 641
 642         /* no use -- only MFP (set_default_mgmt_key) is optional */
 643         if (!rdev->ops->del_key ||
 644             !rdev->ops->add_key ||
 645             !rdev->ops->set_default_key)
 646                 return -EOPNOTSUPP;
 647
 648         switch (ext->alg) {
 649         case IW_ENCODE_ALG_NONE:
 650                 remove = true;
 651                 cipher = 0;
 652                 break;
 653         case IW_ENCODE_ALG_WEP:
 654                 if (ext->key_len == 5)
 655                         cipher = WLAN_CIPHER_SUITE_WEP40;
 656                 else if (ext->key_len == 13)
 657                         cipher = WLAN_CIPHER_SUITE_WEP104;
 658                 else
 659                         return -EINVAL;
 660                 break;
 661         case IW_ENCODE_ALG_TKIP:
 662                 cipher = WLAN_CIPHER_SUITE_TKIP;
 663                 break;
 664         case IW_ENCODE_ALG_CCMP:
 665                 cipher = WLAN_CIPHER_SUITE_CCMP;
 666                 break;
 667         case IW_ENCODE_ALG_AES_CMAC:
 668                 cipher = WLAN_CIPHER_SUITE_AES_CMAC;
 669                 break;
 670         default:
 671                 return -EOPNOTSUPP;
 672         }
 673
 674         if (erq->flags & IW_ENCODE_DISABLED)
 675                 remove = true;
 676
 677         idx = erq->flags & IW_ENCODE_INDEX;
 678         if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 679                 if (idx < 4 || idx > 5) {
 680                         idx = wdev->wext.default_mgmt_key;
 681                         if (idx < 0)
 682                                 return -EINVAL;
 683                 } else
 684                         idx--;
 685         } else {
 686                 if (idx < 1 || idx > 4) {
 687                         idx = wdev->wext.default_key;
 688                         if (idx < 0)
 689                                 return -EINVAL;
 690                 } else
 691                         idx--;
 692         }
 693
 694         addr = ext->addr.sa_data;
 695         if (is_broadcast_ether_addr(addr))
 696                 addr = NULL;
 697
 698         memset(&params, 0, sizeof(params));
 699         params.key = ext->key;
 700         params.key_len = ext->key_len;
 701         params.cipher = cipher;
 702
 703         if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
 704                 params.seq = ext->rx_seq;
 705                 params.seq_len = 6;
 706         }
 707
 708         return cfg80211_set_encryption(
 709                         rdev, dev,
 710                         !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY),
 711                         addr, remove,
 712                         ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
 713                         idx, &params);
 714 }
 715
 716 static int cfg80211_wext_giwencode(struct net_device *dev,
 717                                    struct iw_request_info *info,
 718                                    struct iw_point *erq, char *keybuf)
 719 {
 720         struct wireless_dev *wdev = dev->ieee80211_ptr;
 721         int idx;
 722
 723         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 724             wdev->iftype != NL80211_IFTYPE_ADHOC)
 725                 return -EOPNOTSUPP;
 726
 727         idx = erq->flags & IW_ENCODE_INDEX;
 728         if (idx == 0) {
 729                 idx = wdev->wext.default_key;
 730                 if (idx < 0)
 731                         idx = 0;
 732         } else if (idx < 1 || idx > 4)
 733                 return -EINVAL;
 734         else
 735                 idx--;
 736
 737         erq->flags = idx + 1;
 738
 739         if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
 740                 erq->flags |= IW_ENCODE_DISABLED;
 741                 erq->length = 0;
 742                 return 0;
 743         }
 744
 745         erq->length = min_t(size_t, erq->length,
 746                             wdev->wext.keys->params[idx].key_len);
 747         memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
 748         erq->flags |= IW_ENCODE_ENABLED;
 749
 750         return 0;
 751 }
 752
 753 static int cfg80211_wext_siwfreq(struct net_device *dev,
 754                                  struct iw_request_info *info,
 755                                  struct iw_freq *wextfreq, char *extra)
 756 {
 757         struct wireless_dev *wdev = dev->ieee80211_ptr;
 758         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 759         struct cfg80211_chan_def chandef = {
 760                 .width = NL80211_CHAN_WIDTH_20_NOHT,
 761         };
 762         int freq;
 763
 764         switch (wdev->iftype) {
 765         case NL80211_IFTYPE_STATION:
 766                 return cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
 767         case NL80211_IFTYPE_ADHOC:
 768                 return cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
 769         case NL80211_IFTYPE_MONITOR:
 770                 freq = cfg80211_wext_freq(wextfreq);
 771                 if (freq < 0)
 772                         return freq;
 773                 if (freq == 0)
 774                         return -EINVAL;
 775                 chandef.center_freq1 = freq;
 776                 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
 777                 if (!chandef.chan)
 778                         return -EINVAL;
 779                 return cfg80211_set_monitor_channel(rdev, &chandef);
 780         case NL80211_IFTYPE_MESH_POINT:
 781                 freq = cfg80211_wext_freq(wextfreq);
 782                 if (freq < 0)
 783                         return freq;
 784                 if (freq == 0)
 785                         return -EINVAL;
 786                 chandef.center_freq1 = freq;
 787                 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
 788                 if (!chandef.chan)
 789                         return -EINVAL;
 790                 return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
 791         default:
 792                 return -EOPNOTSUPP;
 793         }
 794 }
 795
 796 static int cfg80211_wext_giwfreq(struct net_device *dev,
 797                                  struct iw_request_info *info,
 798                                  struct iw_freq *freq, char *extra)
 799 {
 800         struct wireless_dev *wdev = dev->ieee80211_ptr;
 801         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 802         struct cfg80211_chan_def chandef;
 803         int ret;
 804
 805         switch (wdev->iftype) {
 806         case NL80211_IFTYPE_STATION:
 807                 return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
 808         case NL80211_IFTYPE_ADHOC:
 809                 return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
 810         case NL80211_IFTYPE_MONITOR:
 811                 if (!rdev->ops->get_channel)
 812                         return -EINVAL;
 813
 814                 ret = rdev_get_channel(rdev, wdev, &chandef);
 815                 if (ret)
 816                         return ret;
 817                 freq->m = chandef.chan->center_freq;
 818                 freq->e = 6;
 819                 return 0;
 820         default:
 821                 return -EINVAL;
 822         }
 823 }
 824
 825 static int cfg80211_wext_siwtxpower(struct net_device *dev,
 826                                     struct iw_request_info *info,
 827                                     union iwreq_data *data, char *extra)
 828 {
 829         struct wireless_dev *wdev = dev->ieee80211_ptr;
 830         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 831         enum nl80211_tx_power_setting type;
 832         int dbm = 0;
 833
 834         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 835                 return -EINVAL;
 836         if (data->txpower.flags & IW_TXPOW_RANGE)
 837                 return -EINVAL;
 838
 839         if (!rdev->ops->set_tx_power)
 840                 return -EOPNOTSUPP;
 841
 842         /* only change when not disabling */
 843         if (!data->txpower.disabled) {
 844                 rfkill_set_sw_state(rdev->rfkill, false);
 845
 846                 if (data->txpower.fixed) {
 847                         /*
 848                          * wext doesn't support negative values, see
 849                          * below where it's for automatic
 850                          */
 851                         if (data->txpower.value < 0)
 852                                 return -EINVAL;
 853                         dbm = data->txpower.value;
 854                         type = NL80211_TX_POWER_FIXED;
 855                         /* TODO: do regulatory check! */
 856                 } else {
 857                         /*
 858                          * Automatic power level setting, max being the value
 859                          * passed in from userland.
 860                          */
 861                         if (data->txpower.value < 0) {
 862                                 type = NL80211_TX_POWER_AUTOMATIC;
 863                         } else {
 864                                 dbm = data->txpower.value;
 865                                 type = NL80211_TX_POWER_LIMITED;
 866                         }
 867                 }
 868         } else {
 869                 rfkill_set_sw_state(rdev->rfkill, true);
 870                 schedule_work(&rdev->rfkill_sync);
 871                 return 0;
 872         }
 873
 874         return rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm));
 875 }
 876
 877 static int cfg80211_wext_giwtxpower(struct net_device *dev,
 878                                     struct iw_request_info *info,
 879                                     union iwreq_data *data, char *extra)
 880 {
 881         struct wireless_dev *wdev = dev->ieee80211_ptr;
 882         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 883         int err, val;
 884
 885         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 886                 return -EINVAL;
 887         if (data->txpower.flags & IW_TXPOW_RANGE)
 888                 return -EINVAL;
 889
 890         if (!rdev->ops->get_tx_power)
 891                 return -EOPNOTSUPP;
 892
 893         err = rdev_get_tx_power(rdev, wdev, &val);
 894         if (err)
 895                 return err;
 896
 897         /* well... oh well */
 898         data->txpower.fixed = 1;
 899         data->txpower.disabled = rfkill_blocked(rdev->rfkill);
 900         data->txpower.value = val;
 901         data->txpower.flags = IW_TXPOW_DBM;
 902
 903         return 0;
 904 }
 905
 906 static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
 907                                  s32 auth_alg)
 908 {
 909         int nr_alg = 0;
 910
 911         if (!auth_alg)
 912                 return -EINVAL;
 913
 914         if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
 915                          IW_AUTH_ALG_SHARED_KEY |
 916                          IW_AUTH_ALG_LEAP))
 917                 return -EINVAL;
 918
 919         if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
 920                 nr_alg++;
 921                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 922         }
 923
 924         if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
 925                 nr_alg++;
 926                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
 927         }
 928
 929         if (auth_alg & IW_AUTH_ALG_LEAP) {
 930                 nr_alg++;
 931                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
 932         }
 933
 934         if (nr_alg > 1)
 935                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
 936
 937         return 0;
 938 }
 939
 940 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
 941 {
 942         if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
 943                              IW_AUTH_WPA_VERSION_WPA2|
 944                              IW_AUTH_WPA_VERSION_DISABLED))
 945                 return -EINVAL;
 946
 947         if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) &&
 948             (wpa_versions & (IW_AUTH_WPA_VERSION_WPA|
 949                              IW_AUTH_WPA_VERSION_WPA2)))
 950                 return -EINVAL;
 951
 952         if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED)
 953                 wdev->wext.connect.crypto.wpa_versions &=
 954                         ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2);
 955
 956         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
 957                 wdev->wext.connect.crypto.wpa_versions |=
 958                         NL80211_WPA_VERSION_1;
 959
 960         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
 961                 wdev->wext.connect.crypto.wpa_versions |=
 962                         NL80211_WPA_VERSION_2;
 963
 964         return 0;
 965 }
 966
 967 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
 968 {
 969         if (cipher & IW_AUTH_CIPHER_WEP40)
 970                 wdev->wext.connect.crypto.cipher_group =
 971                         WLAN_CIPHER_SUITE_WEP40;
 972         else if (cipher & IW_AUTH_CIPHER_WEP104)
 973                 wdev->wext.connect.crypto.cipher_group =
 974                         WLAN_CIPHER_SUITE_WEP104;
 975         else if (cipher & IW_AUTH_CIPHER_TKIP)
 976                 wdev->wext.connect.crypto.cipher_group =
 977                         WLAN_CIPHER_SUITE_TKIP;
 978         else if (cipher & IW_AUTH_CIPHER_CCMP)
 979                 wdev->wext.connect.crypto.cipher_group =
 980                         WLAN_CIPHER_SUITE_CCMP;
 981         else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
 982                 wdev->wext.connect.crypto.cipher_group =
 983                         WLAN_CIPHER_SUITE_AES_CMAC;
 984         else if (cipher & IW_AUTH_CIPHER_NONE)
 985                 wdev->wext.connect.crypto.cipher_group = 0;
 986         else
 987                 return -EINVAL;
 988
 989         return 0;
 990 }
 991
 992 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
 993 {
 994         int nr_ciphers = 0;
 995         u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
 996
 997         if (cipher & IW_AUTH_CIPHER_WEP40) {
 998                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
 999                 nr_ciphers++;
1000         }
1001
1002         if (cipher & IW_AUTH_CIPHER_WEP104) {
1003                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
1004                 nr_ciphers++;
1005         }
1006
1007         if (cipher & IW_AUTH_CIPHER_TKIP) {
1008                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
1009                 nr_ciphers++;
1010         }
1011
1012         if (cipher & IW_AUTH_CIPHER_CCMP) {
1013                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
1014                 nr_ciphers++;
1015         }
1016
1017         if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
1018                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
1019                 nr_ciphers++;
1020         }
1021
1022         BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
1023
1024         wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
1025
1026         return 0;
1027 }
1028
1029
1030 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
1031 {
1032         int nr_akm_suites = 0;
1033
1034         if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
1035                         IW_AUTH_KEY_MGMT_PSK))
1036                 return -EINVAL;
1037
1038         if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
1039                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1040                         WLAN_AKM_SUITE_8021X;
1041                 nr_akm_suites++;
1042         }
1043
1044         if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
1045                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1046                         WLAN_AKM_SUITE_PSK;
1047                 nr_akm_suites++;
1048         }
1049
1050         wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
1051
1052         return 0;
1053 }
1054
1055 static int cfg80211_wext_siwauth(struct net_device *dev,
1056                                  struct iw_request_info *info,
1057                                  struct iw_param *data, char *extra)
1058 {
1059         struct wireless_dev *wdev = dev->ieee80211_ptr;
1060
1061         if (wdev->iftype != NL80211_IFTYPE_STATION)
1062                 return -EOPNOTSUPP;
1063
1064         switch (data->flags & IW_AUTH_INDEX) {
1065         case IW_AUTH_PRIVACY_INVOKED:
1066                 wdev->wext.connect.privacy = data->value;
1067                 return 0;
1068         case IW_AUTH_WPA_VERSION:
1069                 return cfg80211_set_wpa_version(wdev, data->value);
1070         case IW_AUTH_CIPHER_GROUP:
1071                 return cfg80211_set_cipher_group(wdev, data->value);
1072         case IW_AUTH_KEY_MGMT:
1073                 return cfg80211_set_key_mgt(wdev, data->value);
1074         case IW_AUTH_CIPHER_PAIRWISE:
1075                 return cfg80211_set_cipher_pairwise(wdev, data->value);
1076         case IW_AUTH_80211_AUTH_ALG:
1077                 return cfg80211_set_auth_alg(wdev, data->value);
1078         case IW_AUTH_WPA_ENABLED:
1079         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1080         case IW_AUTH_DROP_UNENCRYPTED:
1081         case IW_AUTH_MFP:
1082                 return 0;
1083         default:
1084                 return -EOPNOTSUPP;
1085         }
1086 }
1087
1088 static int cfg80211_wext_giwauth(struct net_device *dev,
1089                                  struct iw_request_info *info,
1090                                  struct iw_param *data, char *extra)
1091 {
1092         /* XXX: what do we need? */
1093
1094         return -EOPNOTSUPP;
1095 }
1096
1097 static int cfg80211_wext_siwpower(struct net_device *dev,
1098                                   struct iw_request_info *info,
1099                                   struct iw_param *wrq, char *extra)
1100 {
1101         struct wireless_dev *wdev = dev->ieee80211_ptr;
1102         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1103         bool ps = wdev->ps;
1104         int timeout = wdev->ps_timeout;
1105         int err;
1106
1107         if (wdev->iftype != NL80211_IFTYPE_STATION)
1108                 return -EINVAL;
1109
1110         if (!rdev->ops->set_power_mgmt)
1111                 return -EOPNOTSUPP;
1112
1113         if (wrq->disabled) {
1114                 ps = false;
1115         } else {
1116                 switch (wrq->flags & IW_POWER_MODE) {
1117                 case IW_POWER_ON:       /* If not specified */
1118                 case IW_POWER_MODE:     /* If set all mask */
1119                 case IW_POWER_ALL_R:    /* If explicitely state all */
1120                         ps = true;
1121                         break;
1122                 default:                /* Otherwise we ignore */
1123                         return -EINVAL;
1124                 }
1125
1126                 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1127                         return -EINVAL;
1128
1129                 if (wrq->flags & IW_POWER_TIMEOUT)
1130                         timeout = wrq->value / 1000;
1131         }
1132
1133         err = rdev_set_power_mgmt(rdev, dev, ps, timeout);
1134         if (err)
1135                 return err;
1136
1137         wdev->ps = ps;
1138         wdev->ps_timeout = timeout;
1139
1140         return 0;
1141
1142 }
1143
1144 static int cfg80211_wext_giwpower(struct net_device *dev,
1145                                   struct iw_request_info *info,
1146                                   struct iw_param *wrq, char *extra)
1147 {
1148         struct wireless_dev *wdev = dev->ieee80211_ptr;
1149
1150         wrq->disabled = !wdev->ps;
1151
1152         return 0;
1153 }
1154
1155 static int cfg80211_wds_wext_siwap(struct net_device *dev,
1156                                    struct iw_request_info *info,
1157                                    struct sockaddr *addr, char *extra)
1158 {
1159         struct wireless_dev *wdev = dev->ieee80211_ptr;
1160         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1161         int err;
1162
1163         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1164                 return -EINVAL;
1165
1166         if (addr->sa_family != ARPHRD_ETHER)
1167                 return -EINVAL;
1168
1169         if (netif_running(dev))
1170                 return -EBUSY;
1171
1172         if (!rdev->ops->set_wds_peer)
1173                 return -EOPNOTSUPP;
1174
1175         err = rdev_set_wds_peer(rdev, dev, (u8 *)&addr->sa_data);
1176         if (err)
1177                 return err;
1178
1179         memcpy(&wdev->wext.bssid, (u8 *) &addr->sa_data, ETH_ALEN);
1180
1181         return 0;
1182 }
1183
1184 static int cfg80211_wds_wext_giwap(struct net_device *dev,
1185                                    struct iw_request_info *info,
1186                                    struct sockaddr *addr, char *extra)
1187 {
1188         struct wireless_dev *wdev = dev->ieee80211_ptr;
1189
1190         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1191                 return -EINVAL;
1192
1193         addr->sa_family = ARPHRD_ETHER;
1194         memcpy(&addr->sa_data, wdev->wext.bssid, ETH_ALEN);
1195
1196         return 0;
1197 }
1198
1199 static int cfg80211_wext_siwrate(struct net_device *dev,
1200                                  struct iw_request_info *info,
1201                                  struct iw_param *rate, char *extra)
1202 {
1203         struct wireless_dev *wdev = dev->ieee80211_ptr;
1204         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1205         struct cfg80211_bitrate_mask mask;
1206         u32 fixed, maxrate;
1207         struct ieee80211_supported_band *sband;
1208         int band, ridx;
1209         bool match = false;
1210
1211         if (!rdev->ops->set_bitrate_mask)
1212                 return -EOPNOTSUPP;
1213
1214         memset(&mask, 0, sizeof(mask));
1215         fixed = 0;
1216         maxrate = (u32)-1;
1217
1218         if (rate->value < 0) {
1219                 /* nothing */
1220         } else if (rate->fixed) {
1221                 fixed = rate->value / 100000;
1222         } else {
1223                 maxrate = rate->value / 100000;
1224         }
1225
1226         for (band = 0; band < NUM_NL80211_BANDS; band++) {
1227                 sband = wdev->wiphy->bands[band];
1228                 if (sband == NULL)
1229                         continue;
1230                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
1231                         struct ieee80211_rate *srate = &sband->bitrates[ridx];
1232                         if (fixed == srate->bitrate) {
1233                                 mask.control[band].legacy = 1 << ridx;
1234                                 match = true;
1235                                 break;
1236                         }
1237                         if (srate->bitrate <= maxrate) {
1238                                 mask.control[band].legacy |= 1 << ridx;
1239                                 match = true;
1240                         }
1241                 }
1242         }
1243
1244         if (!match)
1245                 return -EINVAL;
1246
1247         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
1248 }
1249
1250 static int cfg80211_wext_giwrate(struct net_device *dev,
1251                                  struct iw_request_info *info,
1252                                  struct iw_param *rate, char *extra)
1253 {
1254         struct wireless_dev *wdev = dev->ieee80211_ptr;
1255         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1256         /* we are under RTNL - globally locked - so can use a static struct */
1257         static struct station_info sinfo;
1258         u8 addr[ETH_ALEN];
1259         int err;
1260
1261         if (wdev->iftype != NL80211_IFTYPE_STATION)
1262                 return -EOPNOTSUPP;
1263
1264         if (!rdev->ops->get_station)
1265                 return -EOPNOTSUPP;
1266
1267         err = 0;
1268         wdev_lock(wdev);
1269         if (wdev->current_bss)
1270                 memcpy(addr, wdev->current_bss->pub.bssid, ETH_ALEN);
1271         else
1272                 err = -EOPNOTSUPP;
1273         wdev_unlock(wdev);
1274         if (err)
1275                 return err;
1276
1277         err = rdev_get_station(rdev, dev, addr, &sinfo);
1278         if (err)
1279                 return err;
1280
1281         if (!(sinfo.filled & BIT(NL80211_STA_INFO_TX_BITRATE)))
1282                 return -EOPNOTSUPP;
1283
1284         rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate);
1285
1286         return 0;
1287 }
1288
1289 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
1290 static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
1291 {
1292         struct wireless_dev *wdev = dev->ieee80211_ptr;
1293         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1294         /* we are under RTNL - globally locked - so can use static structs */
1295         static struct iw_statistics wstats;
1296         static struct station_info sinfo;
1297         u8 bssid[ETH_ALEN];
1298
1299         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1300                 return NULL;
1301
1302         if (!rdev->ops->get_station)
1303                 return NULL;
1304
1305         /* Grab BSSID of current BSS, if any */
1306         wdev_lock(wdev);
1307         if (!wdev->current_bss) {
1308                 wdev_unlock(wdev);
1309                 return NULL;
1310         }
1311         memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
1312         wdev_unlock(wdev);
1313
1314         memset(&sinfo, 0, sizeof(sinfo));
1315
1316         if (rdev_get_station(rdev, dev, bssid, &sinfo))
1317                 return NULL;
1318
1319         memset(&wstats, 0, sizeof(wstats));
1320
1321         switch (rdev->wiphy.signal_type) {
1322         case CFG80211_SIGNAL_TYPE_MBM:
1323                 if (sinfo.filled & BIT(NL80211_STA_INFO_SIGNAL)) {
1324                         int sig = sinfo.signal;
1325                         wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1326                         wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1327                         wstats.qual.updated |= IW_QUAL_DBM;
1328                         wstats.qual.level = sig;
1329                         if (sig < -110)
1330                                 sig = -110;
1331                         else if (sig > -40)
1332                                 sig = -40;
1333                         wstats.qual.qual = sig + 110;
1334                         break;
1335                 }
1336         case CFG80211_SIGNAL_TYPE_UNSPEC:
1337                 if (sinfo.filled & BIT(NL80211_STA_INFO_SIGNAL)) {
1338                         wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1339                         wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1340                         wstats.qual.level = sinfo.signal;
1341                         wstats.qual.qual = sinfo.signal;
1342                         break;
1343                 }
1344         default:
1345                 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1346                 wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1347         }
1348
1349         wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1350         if (sinfo.filled & BIT(NL80211_STA_INFO_RX_DROP_MISC))
1351                 wstats.discard.misc = sinfo.rx_dropped_misc;
1352         if (sinfo.filled & BIT(NL80211_STA_INFO_TX_FAILED))
1353                 wstats.discard.retries = sinfo.tx_failed;
1354
1355         return &wstats;
1356 }
1357
1358 static int cfg80211_wext_siwap(struct net_device *dev,
1359                                struct iw_request_info *info,
1360                                struct sockaddr *ap_addr, char *extra)
1361 {
1362         struct wireless_dev *wdev = dev->ieee80211_ptr;
1363
1364         switch (wdev->iftype) {
1365         case NL80211_IFTYPE_ADHOC:
1366                 return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
1367         case NL80211_IFTYPE_STATION:
1368                 return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
1369         case NL80211_IFTYPE_WDS:
1370                 return cfg80211_wds_wext_siwap(dev, info, ap_addr, extra);
1371         default:
1372                 return -EOPNOTSUPP;
1373         }
1374 }
1375
1376 static int cfg80211_wext_giwap(struct net_device *dev,
1377                                struct iw_request_info *info,
1378                                struct sockaddr *ap_addr, char *extra)
1379 {
1380         struct wireless_dev *wdev = dev->ieee80211_ptr;
1381
1382         switch (wdev->iftype) {
1383         case NL80211_IFTYPE_ADHOC:
1384                 return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
1385         case NL80211_IFTYPE_STATION:
1386                 return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
1387         case NL80211_IFTYPE_WDS:
1388                 return cfg80211_wds_wext_giwap(dev, info, ap_addr, extra);
1389         default:
1390                 return -EOPNOTSUPP;
1391         }
1392 }
1393
1394 static int cfg80211_wext_siwessid(struct net_device *dev,
1395                                   struct iw_request_info *info,
1396                                   struct iw_point *data, char *ssid)
1397 {
1398         struct wireless_dev *wdev = dev->ieee80211_ptr;
1399
1400         switch (wdev->iftype) {
1401         case NL80211_IFTYPE_ADHOC:
1402                 return cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
1403         case NL80211_IFTYPE_STATION:
1404                 return cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
1405         default:
1406                 return -EOPNOTSUPP;
1407         }
1408 }
1409
1410 static int cfg80211_wext_giwessid(struct net_device *dev,
1411                                   struct iw_request_info *info,
1412                                   struct iw_point *data, char *ssid)
1413 {
1414         struct wireless_dev *wdev = dev->ieee80211_ptr;
1415
1416         data->flags = 0;
1417         data->length = 0;
1418
1419         switch (wdev->iftype) {
1420         case NL80211_IFTYPE_ADHOC:
1421                 return cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
1422         case NL80211_IFTYPE_STATION:
1423                 return cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
1424         default:
1425                 return -EOPNOTSUPP;
1426         }
1427 }
1428
1429 static int cfg80211_wext_siwpmksa(struct net_device *dev,
1430                                   struct iw_request_info *info,
1431                                   struct iw_point *data, char *extra)
1432 {
1433         struct wireless_dev *wdev = dev->ieee80211_ptr;
1434         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1435         struct cfg80211_pmksa cfg_pmksa;
1436         struct iw_pmksa *pmksa = (struct iw_pmksa *)extra;
1437
1438         memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa));
1439
1440         if (wdev->iftype != NL80211_IFTYPE_STATION)
1441                 return -EINVAL;
1442
1443         cfg_pmksa.bssid = pmksa->bssid.sa_data;
1444         cfg_pmksa.pmkid = pmksa->pmkid;
1445
1446         switch (pmksa->cmd) {
1447         case IW_PMKSA_ADD:
1448                 if (!rdev->ops->set_pmksa)
1449                         return -EOPNOTSUPP;
1450
1451                 return rdev_set_pmksa(rdev, dev, &cfg_pmksa);
1452
1453         case IW_PMKSA_REMOVE:
1454                 if (!rdev->ops->del_pmksa)
1455                         return -EOPNOTSUPP;
1456
1457                 return rdev_del_pmksa(rdev, dev, &cfg_pmksa);
1458
1459         case IW_PMKSA_FLUSH:
1460                 if (!rdev->ops->flush_pmksa)
1461                         return -EOPNOTSUPP;
1462
1463                 return rdev_flush_pmksa(rdev, dev);
1464
1465         default:
1466                 return -EOPNOTSUPP;
1467         }
1468 }
1469
1470 static const iw_handler cfg80211_handlers[] = {
1471         [IW_IOCTL_IDX(SIOCGIWNAME)]     = (iw_handler) cfg80211_wext_giwname,
1472         [IW_IOCTL_IDX(SIOCSIWFREQ)]     = (iw_handler) cfg80211_wext_siwfreq,
1473         [IW_IOCTL_IDX(SIOCGIWFREQ)]     = (iw_handler) cfg80211_wext_giwfreq,
1474         [IW_IOCTL_IDX(SIOCSIWMODE)]     = (iw_handler) cfg80211_wext_siwmode,
1475         [IW_IOCTL_IDX(SIOCGIWMODE)]     = (iw_handler) cfg80211_wext_giwmode,
1476         [IW_IOCTL_IDX(SIOCGIWRANGE)]    = (iw_handler) cfg80211_wext_giwrange,
1477         [IW_IOCTL_IDX(SIOCSIWAP)]       = (iw_handler) cfg80211_wext_siwap,
1478         [IW_IOCTL_IDX(SIOCGIWAP)]       = (iw_handler) cfg80211_wext_giwap,
1479         [IW_IOCTL_IDX(SIOCSIWMLME)]     = (iw_handler) cfg80211_wext_siwmlme,
1480         [IW_IOCTL_IDX(SIOCSIWSCAN)]     = (iw_handler) cfg80211_wext_siwscan,
1481         [IW_IOCTL_IDX(SIOCGIWSCAN)]     = (iw_handler) cfg80211_wext_giwscan,
1482         [IW_IOCTL_IDX(SIOCSIWESSID)]    = (iw_handler) cfg80211_wext_siwessid,
1483         [IW_IOCTL_IDX(SIOCGIWESSID)]    = (iw_handler) cfg80211_wext_giwessid,
1484         [IW_IOCTL_IDX(SIOCSIWRATE)]     = (iw_handler) cfg80211_wext_siwrate,
1485         [IW_IOCTL_IDX(SIOCGIWRATE)]     = (iw_handler) cfg80211_wext_giwrate,
1486         [IW_IOCTL_IDX(SIOCSIWRTS)]      = (iw_handler) cfg80211_wext_siwrts,
1487         [IW_IOCTL_IDX(SIOCGIWRTS)]      = (iw_handler) cfg80211_wext_giwrts,
1488         [IW_IOCTL_IDX(SIOCSIWFRAG)]     = (iw_handler) cfg80211_wext_siwfrag,
1489         [IW_IOCTL_IDX(SIOCGIWFRAG)]     = (iw_handler) cfg80211_wext_giwfrag,
1490         [IW_IOCTL_IDX(SIOCSIWTXPOW)]    = (iw_handler) cfg80211_wext_siwtxpower,
1491         [IW_IOCTL_IDX(SIOCGIWTXPOW)]    = (iw_handler) cfg80211_wext_giwtxpower,
1492         [IW_IOCTL_IDX(SIOCSIWRETRY)]    = (iw_handler) cfg80211_wext_siwretry,
1493         [IW_IOCTL_IDX(SIOCGIWRETRY)]    = (iw_handler) cfg80211_wext_giwretry,
1494         [IW_IOCTL_IDX(SIOCSIWENCODE)]   = (iw_handler) cfg80211_wext_siwencode,
1495         [IW_IOCTL_IDX(SIOCGIWENCODE)]   = (iw_handler) cfg80211_wext_giwencode,
1496         [IW_IOCTL_IDX(SIOCSIWPOWER)]    = (iw_handler) cfg80211_wext_siwpower,
1497         [IW_IOCTL_IDX(SIOCGIWPOWER)]    = (iw_handler) cfg80211_wext_giwpower,
1498         [IW_IOCTL_IDX(SIOCSIWGENIE)]    = (iw_handler) cfg80211_wext_siwgenie,
1499         [IW_IOCTL_IDX(SIOCSIWAUTH)]     = (iw_handler) cfg80211_wext_siwauth,
1500         [IW_IOCTL_IDX(SIOCGIWAUTH)]     = (iw_handler) cfg80211_wext_giwauth,
1501         [IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= (iw_handler) cfg80211_wext_siwencodeext,
1502         [IW_IOCTL_IDX(SIOCSIWPMKSA)]    = (iw_handler) cfg80211_wext_siwpmksa,
1503 };
1504
1505 const struct iw_handler_def cfg80211_wext_handler = {
1506         .num_standard           = ARRAY_SIZE(cfg80211_handlers),
1507         .standard               = cfg80211_handlers,
1508         .get_wireless_stats = cfg80211_wireless_stats,
1509 };