net/wireless/wext-compat.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * cfg80211 - wext compat code
   4  *
   5  * This is temporary code until all wireless functionality is migrated
   6  * into cfg80211, when that happens all the exports here go away and
   7  * we directly assign the wireless handlers of wireless interfaces.
   8  *
   9  * Copyright 2008-2009  Johannes Berg <johannes@sipsolutions.net>
  10  */
  11
  12 #include <linux/export.h>
  13 #include <linux/wireless.h>
  14 #include <linux/nl80211.h>
  15 #include <linux/if_arp.h>
  16 #include <linux/etherdevice.h>
  17 #include <linux/slab.h>
  18 #include <net/iw_handler.h>
  19 #include <net/cfg80211.h>
  20 #include <net/cfg80211-wext.h>
  21 #include "wext-compat.h"
  22 #include "core.h"
  23 #include "rdev-ops.h"
  24
  25 int cfg80211_wext_giwname(struct net_device *dev,
  26                           struct iw_request_info *info,
  27                           char *name, char *extra)
  28 {
  29         strcpy(name, "IEEE 802.11");
  30         return 0;
  31 }
  32 EXPORT_WEXT_HANDLER(cfg80211_wext_giwname);
  33
  34 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
  35                           u32 *mode, char *extra)
  36 {
  37         struct wireless_dev *wdev = dev->ieee80211_ptr;
  38         struct cfg80211_registered_device *rdev;
  39         struct vif_params vifparams;
  40         enum nl80211_iftype type;
  41
  42         rdev = wiphy_to_rdev(wdev->wiphy);
  43
  44         switch (*mode) {
  45         case IW_MODE_INFRA:
  46                 type = NL80211_IFTYPE_STATION;
  47                 break;
  48         case IW_MODE_ADHOC:
  49                 type = NL80211_IFTYPE_ADHOC;
  50                 break;
  51         case IW_MODE_REPEAT:
  52                 type = NL80211_IFTYPE_WDS;
  53                 break;
  54         case IW_MODE_MONITOR:
  55                 type = NL80211_IFTYPE_MONITOR;
  56                 break;
  57         default:
  58                 return -EINVAL;
  59         }
  60
  61         if (type == wdev->iftype)
  62                 return 0;
  63
  64         memset(&vifparams, 0, sizeof(vifparams));
  65
  66         return cfg80211_change_iface(rdev, dev, type, &vifparams);
  67 }
  68 EXPORT_WEXT_HANDLER(cfg80211_wext_siwmode);
  69
  70 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
  71                           u32 *mode, char *extra)
  72 {
  73         struct wireless_dev *wdev = dev->ieee80211_ptr;
  74
  75         if (!wdev)
  76                 return -EOPNOTSUPP;
  77
  78         switch (wdev->iftype) {
  79         case NL80211_IFTYPE_AP:
  80                 *mode = IW_MODE_MASTER;
  81                 break;
  82         case NL80211_IFTYPE_STATION:
  83                 *mode = IW_MODE_INFRA;
  84                 break;
  85         case NL80211_IFTYPE_ADHOC:
  86                 *mode = IW_MODE_ADHOC;
  87                 break;
  88         case NL80211_IFTYPE_MONITOR:
  89                 *mode = IW_MODE_MONITOR;
  90                 break;
  91         case NL80211_IFTYPE_WDS:
  92                 *mode = IW_MODE_REPEAT;
  93                 break;
  94         case NL80211_IFTYPE_AP_VLAN:
  95                 *mode = IW_MODE_SECOND;         /* FIXME */
  96                 break;
  97         default:
  98                 *mode = IW_MODE_AUTO;
  99                 break;
 100         }
 101         return 0;
 102 }
 103 EXPORT_WEXT_HANDLER(cfg80211_wext_giwmode);
 104
 105
 106 int cfg80211_wext_giwrange(struct net_device *dev,
 107                            struct iw_request_info *info,
 108                            struct iw_point *data, char *extra)
 109 {
 110         struct wireless_dev *wdev = dev->ieee80211_ptr;
 111         struct iw_range *range = (struct iw_range *) extra;
 112         enum nl80211_band band;
 113         int i, c = 0;
 114
 115         if (!wdev)
 116                 return -EOPNOTSUPP;
 117
 118         data->length = sizeof(struct iw_range);
 119         memset(range, 0, sizeof(struct iw_range));
 120
 121         range->we_version_compiled = WIRELESS_EXT;
 122         range->we_version_source = 21;
 123         range->retry_capa = IW_RETRY_LIMIT;
 124         range->retry_flags = IW_RETRY_LIMIT;
 125         range->min_retry = 0;
 126         range->max_retry = 255;
 127         range->min_rts = 0;
 128         range->max_rts = 2347;
 129         range->min_frag = 256;
 130         range->max_frag = 2346;
 131
 132         range->max_encoding_tokens = 4;
 133
 134         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
 135
 136         switch (wdev->wiphy->signal_type) {
 137         case CFG80211_SIGNAL_TYPE_NONE:
 138                 break;
 139         case CFG80211_SIGNAL_TYPE_MBM:
 140                 range->max_qual.level = (u8)-110;
 141                 range->max_qual.qual = 70;
 142                 range->avg_qual.qual = 35;
 143                 range->max_qual.updated |= IW_QUAL_DBM;
 144                 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 145                 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 146                 break;
 147         case CFG80211_SIGNAL_TYPE_UNSPEC:
 148                 range->max_qual.level = 100;
 149                 range->max_qual.qual = 100;
 150                 range->avg_qual.qual = 50;
 151                 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 152                 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 153                 break;
 154         }
 155
 156         range->avg_qual.level = range->max_qual.level / 2;
 157         range->avg_qual.noise = range->max_qual.noise / 2;
 158         range->avg_qual.updated = range->max_qual.updated;
 159
 160         for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) {
 161                 switch (wdev->wiphy->cipher_suites[i]) {
 162                 case WLAN_CIPHER_SUITE_TKIP:
 163                         range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
 164                                             IW_ENC_CAPA_WPA);
 165                         break;
 166
 167                 case WLAN_CIPHER_SUITE_CCMP:
 168                         range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
 169                                             IW_ENC_CAPA_WPA2);
 170                         break;
 171
 172                 case WLAN_CIPHER_SUITE_WEP40:
 173                         range->encoding_size[range->num_encoding_sizes++] =
 174                                 WLAN_KEY_LEN_WEP40;
 175                         break;
 176
 177                 case WLAN_CIPHER_SUITE_WEP104:
 178                         range->encoding_size[range->num_encoding_sizes++] =
 179                                 WLAN_KEY_LEN_WEP104;
 180                         break;
 181                 }
 182         }
 183
 184         for (band = 0; band < NUM_NL80211_BANDS; band ++) {
 185                 struct ieee80211_supported_band *sband;
 186
 187                 sband = wdev->wiphy->bands[band];
 188
 189                 if (!sband)
 190                         continue;
 191
 192                 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
 193                         struct ieee80211_channel *chan = &sband->channels[i];
 194
 195                         if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
 196                                 range->freq[c].i =
 197                                         ieee80211_frequency_to_channel(
 198                                                 chan->center_freq);
 199                                 range->freq[c].m = chan->center_freq;
 200                                 range->freq[c].e = 6;
 201                                 c++;
 202                         }
 203                 }
 204         }
 205         range->num_channels = c;
 206         range->num_frequency = c;
 207
 208         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 209         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 210         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
 211
 212         if (wdev->wiphy->max_scan_ssids > 0)
 213                 range->scan_capa |= IW_SCAN_CAPA_ESSID;
 214
 215         return 0;
 216 }
 217 EXPORT_WEXT_HANDLER(cfg80211_wext_giwrange);
 218
 219
 220 /**
 221  * cfg80211_wext_freq - get wext frequency for non-"auto"
 222  * @dev: the net device
 223  * @freq: the wext freq encoding
 224  *
 225  * Returns a frequency, or a negative error code, or 0 for auto.
 226  */
 227 int cfg80211_wext_freq(struct iw_freq *freq)
 228 {
 229         /*
 230          * Parse frequency - return 0 for auto and
 231          * -EINVAL for impossible things.
 232          */
 233         if (freq->e == 0) {
 234                 enum nl80211_band band = NL80211_BAND_2GHZ;
 235                 if (freq->m < 0)
 236                         return 0;
 237                 if (freq->m > 14)
 238                         band = NL80211_BAND_5GHZ;
 239                 return ieee80211_channel_to_frequency(freq->m, band);
 240         } else {
 241                 int i, div = 1000000;
 242                 for (i = 0; i < freq->e; i++)
 243                         div /= 10;
 244                 if (div <= 0)
 245                         return -EINVAL;
 246                 return freq->m / div;
 247         }
 248 }
 249
 250 int cfg80211_wext_siwrts(struct net_device *dev,
 251                          struct iw_request_info *info,
 252                          struct iw_param *rts, char *extra)
 253 {
 254         struct wireless_dev *wdev = dev->ieee80211_ptr;
 255         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 256         u32 orts = wdev->wiphy->rts_threshold;
 257         int err;
 258
 259         if (rts->disabled || !rts->fixed)
 260                 wdev->wiphy->rts_threshold = (u32) -1;
 261         else if (rts->value < 0)
 262                 return -EINVAL;
 263         else
 264                 wdev->wiphy->rts_threshold = rts->value;
 265
 266         err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_RTS_THRESHOLD);
 267         if (err)
 268                 wdev->wiphy->rts_threshold = orts;
 269
 270         return err;
 271 }
 272 EXPORT_WEXT_HANDLER(cfg80211_wext_siwrts);
 273
 274 int cfg80211_wext_giwrts(struct net_device *dev,
 275                          struct iw_request_info *info,
 276                          struct iw_param *rts, char *extra)
 277 {
 278         struct wireless_dev *wdev = dev->ieee80211_ptr;
 279
 280         rts->value = wdev->wiphy->rts_threshold;
 281         rts->disabled = rts->value == (u32) -1;
 282         rts->fixed = 1;
 283
 284         return 0;
 285 }
 286 EXPORT_WEXT_HANDLER(cfg80211_wext_giwrts);
 287
 288 int cfg80211_wext_siwfrag(struct net_device *dev,
 289                           struct iw_request_info *info,
 290                           struct iw_param *frag, char *extra)
 291 {
 292         struct wireless_dev *wdev = dev->ieee80211_ptr;
 293         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 294         u32 ofrag = wdev->wiphy->frag_threshold;
 295         int err;
 296
 297         if (frag->disabled || !frag->fixed)
 298                 wdev->wiphy->frag_threshold = (u32) -1;
 299         else if (frag->value < 256)
 300                 return -EINVAL;
 301         else {
 302                 /* Fragment length must be even, so strip LSB. */
 303                 wdev->wiphy->frag_threshold = frag->value & ~0x1;
 304         }
 305
 306         err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_FRAG_THRESHOLD);
 307         if (err)
 308                 wdev->wiphy->frag_threshold = ofrag;
 309
 310         return err;
 311 }
 312 EXPORT_WEXT_HANDLER(cfg80211_wext_siwfrag);
 313
 314 int cfg80211_wext_giwfrag(struct net_device *dev,
 315                           struct iw_request_info *info,
 316                           struct iw_param *frag, char *extra)
 317 {
 318         struct wireless_dev *wdev = dev->ieee80211_ptr;
 319
 320         frag->value = wdev->wiphy->frag_threshold;
 321         frag->disabled = frag->value == (u32) -1;
 322         frag->fixed = 1;
 323
 324         return 0;
 325 }
 326 EXPORT_WEXT_HANDLER(cfg80211_wext_giwfrag);
 327
 328 static int cfg80211_wext_siwretry(struct net_device *dev,
 329                                   struct iw_request_info *info,
 330                                   struct iw_param *retry, char *extra)
 331 {
 332         struct wireless_dev *wdev = dev->ieee80211_ptr;
 333         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 334         u32 changed = 0;
 335         u8 olong = wdev->wiphy->retry_long;
 336         u8 oshort = wdev->wiphy->retry_short;
 337         int err;
 338
 339         if (retry->disabled || retry->value < 1 || retry->value > 255 ||
 340             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 341                 return -EINVAL;
 342
 343         if (retry->flags & IW_RETRY_LONG) {
 344                 wdev->wiphy->retry_long = retry->value;
 345                 changed |= WIPHY_PARAM_RETRY_LONG;
 346         } else if (retry->flags & IW_RETRY_SHORT) {
 347                 wdev->wiphy->retry_short = retry->value;
 348                 changed |= WIPHY_PARAM_RETRY_SHORT;
 349         } else {
 350                 wdev->wiphy->retry_short = retry->value;
 351                 wdev->wiphy->retry_long = retry->value;
 352                 changed |= WIPHY_PARAM_RETRY_LONG;
 353                 changed |= WIPHY_PARAM_RETRY_SHORT;
 354         }
 355
 356         if (!changed)
 357                 return 0;
 358
 359         err = rdev_set_wiphy_params(rdev, changed);
 360         if (err) {
 361                 wdev->wiphy->retry_short = oshort;
 362                 wdev->wiphy->retry_long = olong;
 363         }
 364
 365         return err;
 366 }
 367
 368 int cfg80211_wext_giwretry(struct net_device *dev,
 369                            struct iw_request_info *info,
 370                            struct iw_param *retry, char *extra)
 371 {
 372         struct wireless_dev *wdev = dev->ieee80211_ptr;
 373
 374         retry->disabled = 0;
 375
 376         if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
 377                 /*
 378                  * First return short value, iwconfig will ask long value
 379                  * later if needed
 380                  */
 381                 retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT;
 382                 retry->value = wdev->wiphy->retry_short;
 383                 if (wdev->wiphy->retry_long == wdev->wiphy->retry_short)
 384                         retry->flags |= IW_RETRY_LONG;
 385
 386                 return 0;
 387         }
 388
 389         if (retry->flags & IW_RETRY_LONG) {
 390                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
 391                 retry->value = wdev->wiphy->retry_long;
 392         }
 393
 394         return 0;
 395 }
 396 EXPORT_WEXT_HANDLER(cfg80211_wext_giwretry);
 397
 398 static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 399                                      struct net_device *dev, bool pairwise,
 400                                      const u8 *addr, bool remove, bool tx_key,
 401                                      int idx, struct key_params *params)
 402 {
 403         struct wireless_dev *wdev = dev->ieee80211_ptr;
 404         int err, i;
 405         bool rejoin = false;
 406
 407         if (pairwise && !addr)
 408                 return -EINVAL;
 409
 410         /*
 411          * In many cases we won't actually need this, but it's better
 412          * to do it first in case the allocation fails. Don't use wext.
 413          */
 414         if (!wdev->wext.keys) {
 415                 wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys),
 416                                           GFP_KERNEL);
 417                 if (!wdev->wext.keys)
 418                         return -ENOMEM;
 419                 for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++)
 420                         wdev->wext.keys->params[i].key =
 421                                 wdev->wext.keys->data[i];
 422         }
 423
 424         if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
 425             wdev->iftype != NL80211_IFTYPE_STATION)
 426                 return -EOPNOTSUPP;
 427
 428         if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 429                 if (!wdev->current_bss)
 430                         return -ENOLINK;
 431
 432                 if (!rdev->ops->set_default_mgmt_key)
 433                         return -EOPNOTSUPP;
 434
 435                 if (idx < 4 || idx > 5)
 436                         return -EINVAL;
 437         } else if (idx < 0 || idx > 3)
 438                 return -EINVAL;
 439
 440         if (remove) {
 441                 err = 0;
 442                 if (wdev->current_bss) {
 443                         /*
 444                          * If removing the current TX key, we will need to
 445                          * join a new IBSS without the privacy bit clear.
 446                          */
 447                         if (idx == wdev->wext.default_key &&
 448                             wdev->iftype == NL80211_IFTYPE_ADHOC) {
 449                                 __cfg80211_leave_ibss(rdev, wdev->netdev, true);
 450                                 rejoin = true;
 451                         }
 452
 453                         if (!pairwise && addr &&
 454                             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
 455                                 err = -ENOENT;
 456                         else
 457                                 err = rdev_del_key(rdev, dev, idx, pairwise,
 458                                                    addr);
 459                 }
 460                 wdev->wext.connect.privacy = false;
 461                 /*
 462                  * Applications using wireless extensions expect to be
 463                  * able to delete keys that don't exist, so allow that.
 464                  */
 465                 if (err == -ENOENT)
 466                         err = 0;
 467                 if (!err) {
 468                         if (!addr && idx < 4) {
 469                                 memset(wdev->wext.keys->data[idx], 0,
 470                                        sizeof(wdev->wext.keys->data[idx]));
 471                                 wdev->wext.keys->params[idx].key_len = 0;
 472                                 wdev->wext.keys->params[idx].cipher = 0;
 473                         }
 474                         if (idx == wdev->wext.default_key)
 475                                 wdev->wext.default_key = -1;
 476                         else if (idx == wdev->wext.default_mgmt_key)
 477                                 wdev->wext.default_mgmt_key = -1;
 478                 }
 479
 480                 if (!err && rejoin)
 481                         err = cfg80211_ibss_wext_join(rdev, wdev);
 482
 483                 return err;
 484         }
 485
 486         if (addr)
 487                 tx_key = false;
 488
 489         if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr))
 490                 return -EINVAL;
 491
 492         err = 0;
 493         if (wdev->current_bss)
 494                 err = rdev_add_key(rdev, dev, idx, pairwise, addr, params);
 495         else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 &&
 496                  params->cipher != WLAN_CIPHER_SUITE_WEP104)
 497                 return -EINVAL;
 498         if (err)
 499                 return err;
 500
 501         /*
 502          * We only need to store WEP keys, since they're the only keys that
 503          * can be be set before a connection is established and persist after
 504          * disconnecting.
 505          */
 506         if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 507                       params->cipher == WLAN_CIPHER_SUITE_WEP104)) {
 508                 wdev->wext.keys->params[idx] = *params;
 509                 memcpy(wdev->wext.keys->data[idx],
 510                         params->key, params->key_len);
 511                 wdev->wext.keys->params[idx].key =
 512                         wdev->wext.keys->data[idx];
 513         }
 514
 515         if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 516              params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 517             (tx_key || (!addr && wdev->wext.default_key == -1))) {
 518                 if (wdev->current_bss) {
 519                         /*
 520                          * If we are getting a new TX key from not having
 521                          * had one before we need to join a new IBSS with
 522                          * the privacy bit set.
 523                          */
 524                         if (wdev->iftype == NL80211_IFTYPE_ADHOC &&
 525                             wdev->wext.default_key == -1) {
 526                                 __cfg80211_leave_ibss(rdev, wdev->netdev, true);
 527                                 rejoin = true;
 528                         }
 529                         err = rdev_set_default_key(rdev, dev, idx, true, true);
 530                 }
 531                 if (!err) {
 532                         wdev->wext.default_key = idx;
 533                         if (rejoin)
 534                                 err = cfg80211_ibss_wext_join(rdev, wdev);
 535                 }
 536                 return err;
 537         }
 538
 539         if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
 540             (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
 541                 if (wdev->current_bss)
 542                         err = rdev_set_default_mgmt_key(rdev, dev, idx);
 543                 if (!err)
 544                         wdev->wext.default_mgmt_key = idx;
 545                 return err;
 546         }
 547
 548         return 0;
 549 }
 550
 551 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 552                                    struct net_device *dev, bool pairwise,
 553                                    const u8 *addr, bool remove, bool tx_key,
 554                                    int idx, struct key_params *params)
 555 {
 556         int err;
 557
 558         wdev_lock(dev->ieee80211_ptr);
 559         err = __cfg80211_set_encryption(rdev, dev, pairwise, addr,
 560                                         remove, tx_key, idx, params);
 561         wdev_unlock(dev->ieee80211_ptr);
 562
 563         return err;
 564 }
 565
 566 static int cfg80211_wext_siwencode(struct net_device *dev,
 567                                    struct iw_request_info *info,
 568                                    struct iw_point *erq, char *keybuf)
 569 {
 570         struct wireless_dev *wdev = dev->ieee80211_ptr;
 571         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 572         int idx, err;
 573         bool remove = false;
 574         struct key_params params;
 575
 576         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 577             wdev->iftype != NL80211_IFTYPE_ADHOC)
 578                 return -EOPNOTSUPP;
 579
 580         /* no use -- only MFP (set_default_mgmt_key) is optional */
 581         if (!rdev->ops->del_key ||
 582             !rdev->ops->add_key ||
 583             !rdev->ops->set_default_key)
 584                 return -EOPNOTSUPP;
 585
 586         idx = erq->flags & IW_ENCODE_INDEX;
 587         if (idx == 0) {
 588                 idx = wdev->wext.default_key;
 589                 if (idx < 0)
 590                         idx = 0;
 591         } else if (idx < 1 || idx > 4)
 592                 return -EINVAL;
 593         else
 594                 idx--;
 595
 596         if (erq->flags & IW_ENCODE_DISABLED)
 597                 remove = true;
 598         else if (erq->length == 0) {
 599                 /* No key data - just set the default TX key index */
 600                 err = 0;
 601                 wdev_lock(wdev);
 602                 if (wdev->current_bss)
 603                         err = rdev_set_default_key(rdev, dev, idx, true,
 604                                                    true);
 605                 if (!err)
 606                         wdev->wext.default_key = idx;
 607                 wdev_unlock(wdev);
 608                 return err;
 609         }
 610
 611         memset(&params, 0, sizeof(params));
 612         params.key = keybuf;
 613         params.key_len = erq->length;
 614         if (erq->length == 5)
 615                 params.cipher = WLAN_CIPHER_SUITE_WEP40;
 616         else if (erq->length == 13)
 617                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
 618         else if (!remove)
 619                 return -EINVAL;
 620
 621         return cfg80211_set_encryption(rdev, dev, false, NULL, remove,
 622                                        wdev->wext.default_key == -1,
 623                                        idx, &params);
 624 }
 625
 626 static int cfg80211_wext_siwencodeext(struct net_device *dev,
 627                                       struct iw_request_info *info,
 628                                       struct iw_point *erq, char *extra)
 629 {
 630         struct wireless_dev *wdev = dev->ieee80211_ptr;
 631         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 632         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
 633         const u8 *addr;
 634         int idx;
 635         bool remove = false;
 636         struct key_params params;
 637         u32 cipher;
 638
 639         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 640             wdev->iftype != NL80211_IFTYPE_ADHOC)
 641                 return -EOPNOTSUPP;
 642
 643         /* no use -- only MFP (set_default_mgmt_key) is optional */
 644         if (!rdev->ops->del_key ||
 645             !rdev->ops->add_key ||
 646             !rdev->ops->set_default_key)
 647                 return -EOPNOTSUPP;
 648
 649         switch (ext->alg) {
 650         case IW_ENCODE_ALG_NONE:
 651                 remove = true;
 652                 cipher = 0;
 653                 break;
 654         case IW_ENCODE_ALG_WEP:
 655                 if (ext->key_len == 5)
 656                         cipher = WLAN_CIPHER_SUITE_WEP40;
 657                 else if (ext->key_len == 13)
 658                         cipher = WLAN_CIPHER_SUITE_WEP104;
 659                 else
 660                         return -EINVAL;
 661                 break;
 662         case IW_ENCODE_ALG_TKIP:
 663                 cipher = WLAN_CIPHER_SUITE_TKIP;
 664                 break;
 665         case IW_ENCODE_ALG_CCMP:
 666                 cipher = WLAN_CIPHER_SUITE_CCMP;
 667                 break;
 668         case IW_ENCODE_ALG_AES_CMAC:
 669                 cipher = WLAN_CIPHER_SUITE_AES_CMAC;
 670                 break;
 671         default:
 672                 return -EOPNOTSUPP;
 673         }
 674
 675         if (erq->flags & IW_ENCODE_DISABLED)
 676                 remove = true;
 677
 678         idx = erq->flags & IW_ENCODE_INDEX;
 679         if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 680                 if (idx < 4 || idx > 5) {
 681                         idx = wdev->wext.default_mgmt_key;
 682                         if (idx < 0)
 683                                 return -EINVAL;
 684                 } else
 685                         idx--;
 686         } else {
 687                 if (idx < 1 || idx > 4) {
 688                         idx = wdev->wext.default_key;
 689                         if (idx < 0)
 690                                 return -EINVAL;
 691                 } else
 692                         idx--;
 693         }
 694
 695         addr = ext->addr.sa_data;
 696         if (is_broadcast_ether_addr(addr))
 697                 addr = NULL;
 698
 699         memset(&params, 0, sizeof(params));
 700         params.key = ext->key;
 701         params.key_len = ext->key_len;
 702         params.cipher = cipher;
 703
 704         if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
 705                 params.seq = ext->rx_seq;
 706                 params.seq_len = 6;
 707         }
 708
 709         return cfg80211_set_encryption(
 710                         rdev, dev,
 711                         !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY),
 712                         addr, remove,
 713                         ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
 714                         idx, &params);
 715 }
 716
 717 static int cfg80211_wext_giwencode(struct net_device *dev,
 718                                    struct iw_request_info *info,
 719                                    struct iw_point *erq, char *keybuf)
 720 {
 721         struct wireless_dev *wdev = dev->ieee80211_ptr;
 722         int idx;
 723
 724         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 725             wdev->iftype != NL80211_IFTYPE_ADHOC)
 726                 return -EOPNOTSUPP;
 727
 728         idx = erq->flags & IW_ENCODE_INDEX;
 729         if (idx == 0) {
 730                 idx = wdev->wext.default_key;
 731                 if (idx < 0)
 732                         idx = 0;
 733         } else if (idx < 1 || idx > 4)
 734                 return -EINVAL;
 735         else
 736                 idx--;
 737
 738         erq->flags = idx + 1;
 739
 740         if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
 741                 erq->flags |= IW_ENCODE_DISABLED;
 742                 erq->length = 0;
 743                 return 0;
 744         }
 745
 746         erq->length = min_t(size_t, erq->length,
 747                             wdev->wext.keys->params[idx].key_len);
 748         memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
 749         erq->flags |= IW_ENCODE_ENABLED;
 750
 751         return 0;
 752 }
 753
 754 static int cfg80211_wext_siwfreq(struct net_device *dev,
 755                                  struct iw_request_info *info,
 756                                  struct iw_freq *wextfreq, char *extra)
 757 {
 758         struct wireless_dev *wdev = dev->ieee80211_ptr;
 759         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 760         struct cfg80211_chan_def chandef = {
 761                 .width = NL80211_CHAN_WIDTH_20_NOHT,
 762         };
 763         int freq;
 764
 765         switch (wdev->iftype) {
 766         case NL80211_IFTYPE_STATION:
 767                 return cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
 768         case NL80211_IFTYPE_ADHOC:
 769                 return cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
 770         case NL80211_IFTYPE_MONITOR:
 771                 freq = cfg80211_wext_freq(wextfreq);
 772                 if (freq < 0)
 773                         return freq;
 774                 if (freq == 0)
 775                         return -EINVAL;
 776                 chandef.center_freq1 = freq;
 777                 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
 778                 if (!chandef.chan)
 779                         return -EINVAL;
 780                 return cfg80211_set_monitor_channel(rdev, &chandef);
 781         case NL80211_IFTYPE_MESH_POINT:
 782                 freq = cfg80211_wext_freq(wextfreq);
 783                 if (freq < 0)
 784                         return freq;
 785                 if (freq == 0)
 786                         return -EINVAL;
 787                 chandef.center_freq1 = freq;
 788                 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
 789                 if (!chandef.chan)
 790                         return -EINVAL;
 791                 return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
 792         default:
 793                 return -EOPNOTSUPP;
 794         }
 795 }
 796
 797 static int cfg80211_wext_giwfreq(struct net_device *dev,
 798                                  struct iw_request_info *info,
 799                                  struct iw_freq *freq, char *extra)
 800 {
 801         struct wireless_dev *wdev = dev->ieee80211_ptr;
 802         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 803         struct cfg80211_chan_def chandef;
 804         int ret;
 805
 806         switch (wdev->iftype) {
 807         case NL80211_IFTYPE_STATION:
 808                 return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
 809         case NL80211_IFTYPE_ADHOC:
 810                 return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
 811         case NL80211_IFTYPE_MONITOR:
 812                 if (!rdev->ops->get_channel)
 813                         return -EINVAL;
 814
 815                 ret = rdev_get_channel(rdev, wdev, &chandef);
 816                 if (ret)
 817                         return ret;
 818                 freq->m = chandef.chan->center_freq;
 819                 freq->e = 6;
 820                 return 0;
 821         default:
 822                 return -EINVAL;
 823         }
 824 }
 825
 826 static int cfg80211_wext_siwtxpower(struct net_device *dev,
 827                                     struct iw_request_info *info,
 828                                     union iwreq_data *data, char *extra)
 829 {
 830         struct wireless_dev *wdev = dev->ieee80211_ptr;
 831         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 832         enum nl80211_tx_power_setting type;
 833         int dbm = 0;
 834
 835         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 836                 return -EINVAL;
 837         if (data->txpower.flags & IW_TXPOW_RANGE)
 838                 return -EINVAL;
 839
 840         if (!rdev->ops->set_tx_power)
 841                 return -EOPNOTSUPP;
 842
 843         /* only change when not disabling */
 844         if (!data->txpower.disabled) {
 845                 rfkill_set_sw_state(rdev->rfkill, false);
 846
 847                 if (data->txpower.fixed) {
 848                         /*
 849                          * wext doesn't support negative values, see
 850                          * below where it's for automatic
 851                          */
 852                         if (data->txpower.value < 0)
 853                                 return -EINVAL;
 854                         dbm = data->txpower.value;
 855                         type = NL80211_TX_POWER_FIXED;
 856                         /* TODO: do regulatory check! */
 857                 } else {
 858                         /*
 859                          * Automatic power level setting, max being the value
 860                          * passed in from userland.
 861                          */
 862                         if (data->txpower.value < 0) {
 863                                 type = NL80211_TX_POWER_AUTOMATIC;
 864                         } else {
 865                                 dbm = data->txpower.value;
 866                                 type = NL80211_TX_POWER_LIMITED;
 867                         }
 868                 }
 869         } else {
 870                 rfkill_set_sw_state(rdev->rfkill, true);
 871                 schedule_work(&rdev->rfkill_sync);
 872                 return 0;
 873         }
 874
 875         return rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm));
 876 }
 877
 878 static int cfg80211_wext_giwtxpower(struct net_device *dev,
 879                                     struct iw_request_info *info,
 880                                     union iwreq_data *data, char *extra)
 881 {
 882         struct wireless_dev *wdev = dev->ieee80211_ptr;
 883         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 884         int err, val;
 885
 886         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 887                 return -EINVAL;
 888         if (data->txpower.flags & IW_TXPOW_RANGE)
 889                 return -EINVAL;
 890
 891         if (!rdev->ops->get_tx_power)
 892                 return -EOPNOTSUPP;
 893
 894         err = rdev_get_tx_power(rdev, wdev, &val);
 895         if (err)
 896                 return err;
 897
 898         /* well... oh well */
 899         data->txpower.fixed = 1;
 900         data->txpower.disabled = rfkill_blocked(rdev->rfkill);
 901         data->txpower.value = val;
 902         data->txpower.flags = IW_TXPOW_DBM;
 903
 904         return 0;
 905 }
 906
 907 static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
 908                                  s32 auth_alg)
 909 {
 910         int nr_alg = 0;
 911
 912         if (!auth_alg)
 913                 return -EINVAL;
 914
 915         if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
 916                          IW_AUTH_ALG_SHARED_KEY |
 917                          IW_AUTH_ALG_LEAP))
 918                 return -EINVAL;
 919
 920         if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
 921                 nr_alg++;
 922                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 923         }
 924
 925         if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
 926                 nr_alg++;
 927                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
 928         }
 929
 930         if (auth_alg & IW_AUTH_ALG_LEAP) {
 931                 nr_alg++;
 932                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
 933         }
 934
 935         if (nr_alg > 1)
 936                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
 937
 938         return 0;
 939 }
 940
 941 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
 942 {
 943         if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
 944                              IW_AUTH_WPA_VERSION_WPA2|
 945                              IW_AUTH_WPA_VERSION_DISABLED))
 946                 return -EINVAL;
 947
 948         if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) &&
 949             (wpa_versions & (IW_AUTH_WPA_VERSION_WPA|
 950                              IW_AUTH_WPA_VERSION_WPA2)))
 951                 return -EINVAL;
 952
 953         if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED)
 954                 wdev->wext.connect.crypto.wpa_versions &=
 955                         ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2);
 956
 957         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
 958                 wdev->wext.connect.crypto.wpa_versions |=
 959                         NL80211_WPA_VERSION_1;
 960
 961         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
 962                 wdev->wext.connect.crypto.wpa_versions |=
 963                         NL80211_WPA_VERSION_2;
 964
 965         return 0;
 966 }
 967
 968 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
 969 {
 970         if (cipher & IW_AUTH_CIPHER_WEP40)
 971                 wdev->wext.connect.crypto.cipher_group =
 972                         WLAN_CIPHER_SUITE_WEP40;
 973         else if (cipher & IW_AUTH_CIPHER_WEP104)
 974                 wdev->wext.connect.crypto.cipher_group =
 975                         WLAN_CIPHER_SUITE_WEP104;
 976         else if (cipher & IW_AUTH_CIPHER_TKIP)
 977                 wdev->wext.connect.crypto.cipher_group =
 978                         WLAN_CIPHER_SUITE_TKIP;
 979         else if (cipher & IW_AUTH_CIPHER_CCMP)
 980                 wdev->wext.connect.crypto.cipher_group =
 981                         WLAN_CIPHER_SUITE_CCMP;
 982         else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
 983                 wdev->wext.connect.crypto.cipher_group =
 984                         WLAN_CIPHER_SUITE_AES_CMAC;
 985         else if (cipher & IW_AUTH_CIPHER_NONE)
 986                 wdev->wext.connect.crypto.cipher_group = 0;
 987         else
 988                 return -EINVAL;
 989
 990         return 0;
 991 }
 992
 993 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
 994 {
 995         int nr_ciphers = 0;
 996         u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
 997
 998         if (cipher & IW_AUTH_CIPHER_WEP40) {
 999                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
1000                 nr_ciphers++;
1001         }
1002
1003         if (cipher & IW_AUTH_CIPHER_WEP104) {
1004                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
1005                 nr_ciphers++;
1006         }
1007
1008         if (cipher & IW_AUTH_CIPHER_TKIP) {
1009                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
1010                 nr_ciphers++;
1011         }
1012
1013         if (cipher & IW_AUTH_CIPHER_CCMP) {
1014                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
1015                 nr_ciphers++;
1016         }
1017
1018         if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
1019                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
1020                 nr_ciphers++;
1021         }
1022
1023         BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
1024
1025         wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
1026
1027         return 0;
1028 }
1029
1030
1031 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
1032 {
1033         int nr_akm_suites = 0;
1034
1035         if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
1036                         IW_AUTH_KEY_MGMT_PSK))
1037                 return -EINVAL;
1038
1039         if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
1040                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1041                         WLAN_AKM_SUITE_8021X;
1042                 nr_akm_suites++;
1043         }
1044
1045         if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
1046                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1047                         WLAN_AKM_SUITE_PSK;
1048                 nr_akm_suites++;
1049         }
1050
1051         wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
1052
1053         return 0;
1054 }
1055
1056 static int cfg80211_wext_siwauth(struct net_device *dev,
1057                                  struct iw_request_info *info,
1058                                  struct iw_param *data, char *extra)
1059 {
1060         struct wireless_dev *wdev = dev->ieee80211_ptr;
1061
1062         if (wdev->iftype != NL80211_IFTYPE_STATION)
1063                 return -EOPNOTSUPP;
1064
1065         switch (data->flags & IW_AUTH_INDEX) {
1066         case IW_AUTH_PRIVACY_INVOKED:
1067                 wdev->wext.connect.privacy = data->value;
1068                 return 0;
1069         case IW_AUTH_WPA_VERSION:
1070                 return cfg80211_set_wpa_version(wdev, data->value);
1071         case IW_AUTH_CIPHER_GROUP:
1072                 return cfg80211_set_cipher_group(wdev, data->value);
1073         case IW_AUTH_KEY_MGMT:
1074                 return cfg80211_set_key_mgt(wdev, data->value);
1075         case IW_AUTH_CIPHER_PAIRWISE:
1076                 return cfg80211_set_cipher_pairwise(wdev, data->value);
1077         case IW_AUTH_80211_AUTH_ALG:
1078                 return cfg80211_set_auth_alg(wdev, data->value);
1079         case IW_AUTH_WPA_ENABLED:
1080         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1081         case IW_AUTH_DROP_UNENCRYPTED:
1082         case IW_AUTH_MFP:
1083                 return 0;
1084         default:
1085                 return -EOPNOTSUPP;
1086         }
1087 }
1088
1089 static int cfg80211_wext_giwauth(struct net_device *dev,
1090                                  struct iw_request_info *info,
1091                                  struct iw_param *data, char *extra)
1092 {
1093         /* XXX: what do we need? */
1094
1095         return -EOPNOTSUPP;
1096 }
1097
1098 static int cfg80211_wext_siwpower(struct net_device *dev,
1099                                   struct iw_request_info *info,
1100                                   struct iw_param *wrq, char *extra)
1101 {
1102         struct wireless_dev *wdev = dev->ieee80211_ptr;
1103         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1104         bool ps = wdev->ps;
1105         int timeout = wdev->ps_timeout;
1106         int err;
1107
1108         if (wdev->iftype != NL80211_IFTYPE_STATION)
1109                 return -EINVAL;
1110
1111         if (!rdev->ops->set_power_mgmt)
1112                 return -EOPNOTSUPP;
1113
1114         if (wrq->disabled) {
1115                 ps = false;
1116         } else {
1117                 switch (wrq->flags & IW_POWER_MODE) {
1118                 case IW_POWER_ON:       /* If not specified */
1119                 case IW_POWER_MODE:     /* If set all mask */
1120                 case IW_POWER_ALL_R:    /* If explicitely state all */
1121                         ps = true;
1122                         break;
1123                 default:                /* Otherwise we ignore */
1124                         return -EINVAL;
1125                 }
1126
1127                 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1128                         return -EINVAL;
1129
1130                 if (wrq->flags & IW_POWER_TIMEOUT)
1131                         timeout = wrq->value / 1000;
1132         }
1133
1134         err = rdev_set_power_mgmt(rdev, dev, ps, timeout);
1135         if (err)
1136                 return err;
1137
1138         wdev->ps = ps;
1139         wdev->ps_timeout = timeout;
1140
1141         return 0;
1142
1143 }
1144
1145 static int cfg80211_wext_giwpower(struct net_device *dev,
1146                                   struct iw_request_info *info,
1147                                   struct iw_param *wrq, char *extra)
1148 {
1149         struct wireless_dev *wdev = dev->ieee80211_ptr;
1150
1151         wrq->disabled = !wdev->ps;
1152
1153         return 0;
1154 }
1155
1156 static int cfg80211_wds_wext_siwap(struct net_device *dev,
1157                                    struct iw_request_info *info,
1158                                    struct sockaddr *addr, char *extra)
1159 {
1160         struct wireless_dev *wdev = dev->ieee80211_ptr;
1161         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1162         int err;
1163
1164         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1165                 return -EINVAL;
1166
1167         if (addr->sa_family != ARPHRD_ETHER)
1168                 return -EINVAL;
1169
1170         if (netif_running(dev))
1171                 return -EBUSY;
1172
1173         if (!rdev->ops->set_wds_peer)
1174                 return -EOPNOTSUPP;
1175
1176         err = rdev_set_wds_peer(rdev, dev, (u8 *)&addr->sa_data);
1177         if (err)
1178                 return err;
1179
1180         memcpy(&wdev->wext.bssid, (u8 *) &addr->sa_data, ETH_ALEN);
1181
1182         return 0;
1183 }
1184
1185 static int cfg80211_wds_wext_giwap(struct net_device *dev,
1186                                    struct iw_request_info *info,
1187                                    struct sockaddr *addr, char *extra)
1188 {
1189         struct wireless_dev *wdev = dev->ieee80211_ptr;
1190
1191         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_WDS))
1192                 return -EINVAL;
1193
1194         addr->sa_family = ARPHRD_ETHER;
1195         memcpy(&addr->sa_data, wdev->wext.bssid, ETH_ALEN);
1196
1197         return 0;
1198 }
1199
1200 static int cfg80211_wext_siwrate(struct net_device *dev,
1201                                  struct iw_request_info *info,
1202                                  struct iw_param *rate, char *extra)
1203 {
1204         struct wireless_dev *wdev = dev->ieee80211_ptr;
1205         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1206         struct cfg80211_bitrate_mask mask;
1207         u32 fixed, maxrate;
1208         struct ieee80211_supported_band *sband;
1209         int band, ridx;
1210         bool match = false;
1211
1212         if (!rdev->ops->set_bitrate_mask)
1213                 return -EOPNOTSUPP;
1214
1215         memset(&mask, 0, sizeof(mask));
1216         fixed = 0;
1217         maxrate = (u32)-1;
1218
1219         if (rate->value < 0) {
1220                 /* nothing */
1221         } else if (rate->fixed) {
1222                 fixed = rate->value / 100000;
1223         } else {
1224                 maxrate = rate->value / 100000;
1225         }
1226
1227         for (band = 0; band < NUM_NL80211_BANDS; band++) {
1228                 sband = wdev->wiphy->bands[band];
1229                 if (sband == NULL)
1230                         continue;
1231                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
1232                         struct ieee80211_rate *srate = &sband->bitrates[ridx];
1233                         if (fixed == srate->bitrate) {
1234                                 mask.control[band].legacy = 1 << ridx;
1235                                 match = true;
1236                                 break;
1237                         }
1238                         if (srate->bitrate <= maxrate) {
1239                                 mask.control[band].legacy |= 1 << ridx;
1240                                 match = true;
1241                         }
1242                 }
1243         }
1244
1245         if (!match)
1246                 return -EINVAL;
1247
1248         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
1249 }
1250
1251 static int cfg80211_wext_giwrate(struct net_device *dev,
1252                                  struct iw_request_info *info,
1253                                  struct iw_param *rate, char *extra)
1254 {
1255         struct wireless_dev *wdev = dev->ieee80211_ptr;
1256         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1257         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 };