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  * Copyright (C) 2019 Intel Corporation
  11  */
  12
  13 #include <linux/export.h>
  14 #include <linux/wireless.h>
  15 #include <linux/nl80211.h>
  16 #include <linux/if_arp.h>
  17 #include <linux/etherdevice.h>
  18 #include <linux/slab.h>
  19 #include <net/iw_handler.h>
  20 #include <net/cfg80211.h>
  21 #include <net/cfg80211-wext.h>
  22 #include "wext-compat.h"
  23 #include "core.h"
  24 #include "rdev-ops.h"
  25
  26 int cfg80211_wext_giwname(struct net_device *dev,
  27                           struct iw_request_info *info,
  28                           char *name, char *extra)
  29 {
  30         strcpy(name, "IEEE 802.11");
  31         return 0;
  32 }
  33 EXPORT_WEXT_HANDLER(cfg80211_wext_giwname);
  34
  35 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
  36                           u32 *mode, char *extra)
  37 {
  38         struct wireless_dev *wdev = dev->ieee80211_ptr;
  39         struct cfg80211_registered_device *rdev;
  40         struct vif_params vifparams;
  41         enum nl80211_iftype type;
  42
  43         rdev = wiphy_to_rdev(wdev->wiphy);
  44
  45         switch (*mode) {
  46         case IW_MODE_INFRA:
  47                 type = NL80211_IFTYPE_STATION;
  48                 break;
  49         case IW_MODE_ADHOC:
  50                 type = NL80211_IFTYPE_ADHOC;
  51                 break;
  52         case IW_MODE_MONITOR:
  53                 type = NL80211_IFTYPE_MONITOR;
  54                 break;
  55         default:
  56                 return -EINVAL;
  57         }
  58
  59         if (type == wdev->iftype)
  60                 return 0;
  61
  62         memset(&vifparams, 0, sizeof(vifparams));
  63
  64         return cfg80211_change_iface(rdev, dev, type, &vifparams);
  65 }
  66 EXPORT_WEXT_HANDLER(cfg80211_wext_siwmode);
  67
  68 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
  69                           u32 *mode, char *extra)
  70 {
  71         struct wireless_dev *wdev = dev->ieee80211_ptr;
  72
  73         if (!wdev)
  74                 return -EOPNOTSUPP;
  75
  76         switch (wdev->iftype) {
  77         case NL80211_IFTYPE_AP:
  78                 *mode = IW_MODE_MASTER;
  79                 break;
  80         case NL80211_IFTYPE_STATION:
  81                 *mode = IW_MODE_INFRA;
  82                 break;
  83         case NL80211_IFTYPE_ADHOC:
  84                 *mode = IW_MODE_ADHOC;
  85                 break;
  86         case NL80211_IFTYPE_MONITOR:
  87                 *mode = IW_MODE_MONITOR;
  88                 break;
  89         case NL80211_IFTYPE_WDS:
  90                 *mode = IW_MODE_REPEAT;
  91                 break;
  92         case NL80211_IFTYPE_AP_VLAN:
  93                 *mode = IW_MODE_SECOND;         /* FIXME */
  94                 break;
  95         default:
  96                 *mode = IW_MODE_AUTO;
  97                 break;
  98         }
  99         return 0;
 100 }
 101 EXPORT_WEXT_HANDLER(cfg80211_wext_giwmode);
 102
 103
 104 int cfg80211_wext_giwrange(struct net_device *dev,
 105                            struct iw_request_info *info,
 106                            struct iw_point *data, char *extra)
 107 {
 108         struct wireless_dev *wdev = dev->ieee80211_ptr;
 109         struct iw_range *range = (struct iw_range *) extra;
 110         enum nl80211_band band;
 111         int i, c = 0;
 112
 113         if (!wdev)
 114                 return -EOPNOTSUPP;
 115
 116         data->length = sizeof(struct iw_range);
 117         memset(range, 0, sizeof(struct iw_range));
 118
 119         range->we_version_compiled = WIRELESS_EXT;
 120         range->we_version_source = 21;
 121         range->retry_capa = IW_RETRY_LIMIT;
 122         range->retry_flags = IW_RETRY_LIMIT;
 123         range->min_retry = 0;
 124         range->max_retry = 255;
 125         range->min_rts = 0;
 126         range->max_rts = 2347;
 127         range->min_frag = 256;
 128         range->max_frag = 2346;
 129
 130         range->max_encoding_tokens = 4;
 131
 132         range->max_qual.updated = IW_QUAL_NOISE_INVALID;
 133
 134         switch (wdev->wiphy->signal_type) {
 135         case CFG80211_SIGNAL_TYPE_NONE:
 136                 break;
 137         case CFG80211_SIGNAL_TYPE_MBM:
 138                 range->max_qual.level = (u8)-110;
 139                 range->max_qual.qual = 70;
 140                 range->avg_qual.qual = 35;
 141                 range->max_qual.updated |= IW_QUAL_DBM;
 142                 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 143                 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 144                 break;
 145         case CFG80211_SIGNAL_TYPE_UNSPEC:
 146                 range->max_qual.level = 100;
 147                 range->max_qual.qual = 100;
 148                 range->avg_qual.qual = 50;
 149                 range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 150                 range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 151                 break;
 152         }
 153
 154         range->avg_qual.level = range->max_qual.level / 2;
 155         range->avg_qual.noise = range->max_qual.noise / 2;
 156         range->avg_qual.updated = range->max_qual.updated;
 157
 158         for (i = 0; i < wdev->wiphy->n_cipher_suites; i++) {
 159                 switch (wdev->wiphy->cipher_suites[i]) {
 160                 case WLAN_CIPHER_SUITE_TKIP:
 161                         range->enc_capa |= (IW_ENC_CAPA_CIPHER_TKIP |
 162                                             IW_ENC_CAPA_WPA);
 163                         break;
 164
 165                 case WLAN_CIPHER_SUITE_CCMP:
 166                         range->enc_capa |= (IW_ENC_CAPA_CIPHER_CCMP |
 167                                             IW_ENC_CAPA_WPA2);
 168                         break;
 169
 170                 case WLAN_CIPHER_SUITE_WEP40:
 171                         range->encoding_size[range->num_encoding_sizes++] =
 172                                 WLAN_KEY_LEN_WEP40;
 173                         break;
 174
 175                 case WLAN_CIPHER_SUITE_WEP104:
 176                         range->encoding_size[range->num_encoding_sizes++] =
 177                                 WLAN_KEY_LEN_WEP104;
 178                         break;
 179                 }
 180         }
 181
 182         for (band = 0; band < NUM_NL80211_BANDS; band ++) {
 183                 struct ieee80211_supported_band *sband;
 184
 185                 sband = wdev->wiphy->bands[band];
 186
 187                 if (!sband)
 188                         continue;
 189
 190                 for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
 191                         struct ieee80211_channel *chan = &sband->channels[i];
 192
 193                         if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
 194                                 range->freq[c].i =
 195                                         ieee80211_frequency_to_channel(
 196                                                 chan->center_freq);
 197                                 range->freq[c].m = chan->center_freq;
 198                                 range->freq[c].e = 6;
 199                                 c++;
 200                         }
 201                 }
 202         }
 203         range->num_channels = c;
 204         range->num_frequency = c;
 205
 206         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 207         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 208         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
 209
 210         if (wdev->wiphy->max_scan_ssids > 0)
 211                 range->scan_capa |= IW_SCAN_CAPA_ESSID;
 212
 213         return 0;
 214 }
 215 EXPORT_WEXT_HANDLER(cfg80211_wext_giwrange);
 216
 217
 218 /**
 219  * cfg80211_wext_freq - get wext frequency for non-"auto"
 220  * @freq: the wext freq encoding
 221  *
 222  * Returns a frequency, or a negative error code, or 0 for auto.
 223  */
 224 int cfg80211_wext_freq(struct iw_freq *freq)
 225 {
 226         /*
 227          * Parse frequency - return 0 for auto and
 228          * -EINVAL for impossible things.
 229          */
 230         if (freq->e == 0) {
 231                 enum nl80211_band band = NL80211_BAND_2GHZ;
 232                 if (freq->m < 0)
 233                         return 0;
 234                 if (freq->m > 14)
 235                         band = NL80211_BAND_5GHZ;
 236                 return ieee80211_channel_to_frequency(freq->m, band);
 237         } else {
 238                 int i, div = 1000000;
 239                 for (i = 0; i < freq->e; i++)
 240                         div /= 10;
 241                 if (div <= 0)
 242                         return -EINVAL;
 243                 return freq->m / div;
 244         }
 245 }
 246
 247 int cfg80211_wext_siwrts(struct net_device *dev,
 248                          struct iw_request_info *info,
 249                          struct iw_param *rts, char *extra)
 250 {
 251         struct wireless_dev *wdev = dev->ieee80211_ptr;
 252         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 253         u32 orts = wdev->wiphy->rts_threshold;
 254         int err;
 255
 256         if (rts->disabled || !rts->fixed)
 257                 wdev->wiphy->rts_threshold = (u32) -1;
 258         else if (rts->value < 0)
 259                 return -EINVAL;
 260         else
 261                 wdev->wiphy->rts_threshold = rts->value;
 262
 263         err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_RTS_THRESHOLD);
 264         if (err)
 265                 wdev->wiphy->rts_threshold = orts;
 266
 267         return err;
 268 }
 269 EXPORT_WEXT_HANDLER(cfg80211_wext_siwrts);
 270
 271 int cfg80211_wext_giwrts(struct net_device *dev,
 272                          struct iw_request_info *info,
 273                          struct iw_param *rts, char *extra)
 274 {
 275         struct wireless_dev *wdev = dev->ieee80211_ptr;
 276
 277         rts->value = wdev->wiphy->rts_threshold;
 278         rts->disabled = rts->value == (u32) -1;
 279         rts->fixed = 1;
 280
 281         return 0;
 282 }
 283 EXPORT_WEXT_HANDLER(cfg80211_wext_giwrts);
 284
 285 int cfg80211_wext_siwfrag(struct net_device *dev,
 286                           struct iw_request_info *info,
 287                           struct iw_param *frag, char *extra)
 288 {
 289         struct wireless_dev *wdev = dev->ieee80211_ptr;
 290         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 291         u32 ofrag = wdev->wiphy->frag_threshold;
 292         int err;
 293
 294         if (frag->disabled || !frag->fixed)
 295                 wdev->wiphy->frag_threshold = (u32) -1;
 296         else if (frag->value < 256)
 297                 return -EINVAL;
 298         else {
 299                 /* Fragment length must be even, so strip LSB. */
 300                 wdev->wiphy->frag_threshold = frag->value & ~0x1;
 301         }
 302
 303         err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_FRAG_THRESHOLD);
 304         if (err)
 305                 wdev->wiphy->frag_threshold = ofrag;
 306
 307         return err;
 308 }
 309 EXPORT_WEXT_HANDLER(cfg80211_wext_siwfrag);
 310
 311 int cfg80211_wext_giwfrag(struct net_device *dev,
 312                           struct iw_request_info *info,
 313                           struct iw_param *frag, char *extra)
 314 {
 315         struct wireless_dev *wdev = dev->ieee80211_ptr;
 316
 317         frag->value = wdev->wiphy->frag_threshold;
 318         frag->disabled = frag->value == (u32) -1;
 319         frag->fixed = 1;
 320
 321         return 0;
 322 }
 323 EXPORT_WEXT_HANDLER(cfg80211_wext_giwfrag);
 324
 325 static int cfg80211_wext_siwretry(struct net_device *dev,
 326                                   struct iw_request_info *info,
 327                                   struct iw_param *retry, char *extra)
 328 {
 329         struct wireless_dev *wdev = dev->ieee80211_ptr;
 330         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 331         u32 changed = 0;
 332         u8 olong = wdev->wiphy->retry_long;
 333         u8 oshort = wdev->wiphy->retry_short;
 334         int err;
 335
 336         if (retry->disabled || retry->value < 1 || retry->value > 255 ||
 337             (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
 338                 return -EINVAL;
 339
 340         if (retry->flags & IW_RETRY_LONG) {
 341                 wdev->wiphy->retry_long = retry->value;
 342                 changed |= WIPHY_PARAM_RETRY_LONG;
 343         } else if (retry->flags & IW_RETRY_SHORT) {
 344                 wdev->wiphy->retry_short = retry->value;
 345                 changed |= WIPHY_PARAM_RETRY_SHORT;
 346         } else {
 347                 wdev->wiphy->retry_short = retry->value;
 348                 wdev->wiphy->retry_long = retry->value;
 349                 changed |= WIPHY_PARAM_RETRY_LONG;
 350                 changed |= WIPHY_PARAM_RETRY_SHORT;
 351         }
 352
 353         err = rdev_set_wiphy_params(rdev, changed);
 354         if (err) {
 355                 wdev->wiphy->retry_short = oshort;
 356                 wdev->wiphy->retry_long = olong;
 357         }
 358
 359         return err;
 360 }
 361
 362 int cfg80211_wext_giwretry(struct net_device *dev,
 363                            struct iw_request_info *info,
 364                            struct iw_param *retry, char *extra)
 365 {
 366         struct wireless_dev *wdev = dev->ieee80211_ptr;
 367
 368         retry->disabled = 0;
 369
 370         if (retry->flags == 0 || (retry->flags & IW_RETRY_SHORT)) {
 371                 /*
 372                  * First return short value, iwconfig will ask long value
 373                  * later if needed
 374                  */
 375                 retry->flags |= IW_RETRY_LIMIT | IW_RETRY_SHORT;
 376                 retry->value = wdev->wiphy->retry_short;
 377                 if (wdev->wiphy->retry_long == wdev->wiphy->retry_short)
 378                         retry->flags |= IW_RETRY_LONG;
 379
 380                 return 0;
 381         }
 382
 383         if (retry->flags & IW_RETRY_LONG) {
 384                 retry->flags = IW_RETRY_LIMIT | IW_RETRY_LONG;
 385                 retry->value = wdev->wiphy->retry_long;
 386         }
 387
 388         return 0;
 389 }
 390 EXPORT_WEXT_HANDLER(cfg80211_wext_giwretry);
 391
 392 static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 393                                      struct net_device *dev, bool pairwise,
 394                                      const u8 *addr, bool remove, bool tx_key,
 395                                      int idx, struct key_params *params)
 396 {
 397         struct wireless_dev *wdev = dev->ieee80211_ptr;
 398         int err, i;
 399         bool rejoin = false;
 400
 401         if (pairwise && !addr)
 402                 return -EINVAL;
 403
 404         /*
 405          * In many cases we won't actually need this, but it's better
 406          * to do it first in case the allocation fails. Don't use wext.
 407          */
 408         if (!wdev->wext.keys) {
 409                 wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys),
 410                                           GFP_KERNEL);
 411                 if (!wdev->wext.keys)
 412                         return -ENOMEM;
 413                 for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++)
 414                         wdev->wext.keys->params[i].key =
 415                                 wdev->wext.keys->data[i];
 416         }
 417
 418         if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
 419             wdev->iftype != NL80211_IFTYPE_STATION)
 420                 return -EOPNOTSUPP;
 421
 422         if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 423                 if (!wdev->current_bss)
 424                         return -ENOLINK;
 425
 426                 if (!rdev->ops->set_default_mgmt_key)
 427                         return -EOPNOTSUPP;
 428
 429                 if (idx < 4 || idx > 5)
 430                         return -EINVAL;
 431         } else if (idx < 0 || idx > 3)
 432                 return -EINVAL;
 433
 434         if (remove) {
 435                 err = 0;
 436                 if (wdev->current_bss) {
 437                         /*
 438                          * If removing the current TX key, we will need to
 439                          * join a new IBSS without the privacy bit clear.
 440                          */
 441                         if (idx == wdev->wext.default_key &&
 442                             wdev->iftype == NL80211_IFTYPE_ADHOC) {
 443                                 __cfg80211_leave_ibss(rdev, wdev->netdev, true);
 444                                 rejoin = true;
 445                         }
 446
 447                         if (!pairwise && addr &&
 448                             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
 449                                 err = -ENOENT;
 450                         else
 451                                 err = rdev_del_key(rdev, dev, idx, pairwise,
 452                                                    addr);
 453                 }
 454                 wdev->wext.connect.privacy = false;
 455                 /*
 456                  * Applications using wireless extensions expect to be
 457                  * able to delete keys that don't exist, so allow that.
 458                  */
 459                 if (err == -ENOENT)
 460                         err = 0;
 461                 if (!err) {
 462                         if (!addr && idx < 4) {
 463                                 memset(wdev->wext.keys->data[idx], 0,
 464                                        sizeof(wdev->wext.keys->data[idx]));
 465                                 wdev->wext.keys->params[idx].key_len = 0;
 466                                 wdev->wext.keys->params[idx].cipher = 0;
 467                         }
 468                         if (idx == wdev->wext.default_key)
 469                                 wdev->wext.default_key = -1;
 470                         else if (idx == wdev->wext.default_mgmt_key)
 471                                 wdev->wext.default_mgmt_key = -1;
 472                 }
 473
 474                 if (!err && rejoin)
 475                         err = cfg80211_ibss_wext_join(rdev, wdev);
 476
 477                 return err;
 478         }
 479
 480         if (addr)
 481                 tx_key = false;
 482
 483         if (cfg80211_validate_key_settings(rdev, params, idx, pairwise, addr))
 484                 return -EINVAL;
 485
 486         err = 0;
 487         if (wdev->current_bss)
 488                 err = rdev_add_key(rdev, dev, idx, pairwise, addr, params);
 489         else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 &&
 490                  params->cipher != WLAN_CIPHER_SUITE_WEP104)
 491                 return -EINVAL;
 492         if (err)
 493                 return err;
 494
 495         /*
 496          * We only need to store WEP keys, since they're the only keys that
 497          * can be set before a connection is established and persist after
 498          * disconnecting.
 499          */
 500         if (!addr && (params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 501                       params->cipher == WLAN_CIPHER_SUITE_WEP104)) {
 502                 wdev->wext.keys->params[idx] = *params;
 503                 memcpy(wdev->wext.keys->data[idx],
 504                         params->key, params->key_len);
 505                 wdev->wext.keys->params[idx].key =
 506                         wdev->wext.keys->data[idx];
 507         }
 508
 509         if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
 510              params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 511             (tx_key || (!addr && wdev->wext.default_key == -1))) {
 512                 if (wdev->current_bss) {
 513                         /*
 514                          * If we are getting a new TX key from not having
 515                          * had one before we need to join a new IBSS with
 516                          * the privacy bit set.
 517                          */
 518                         if (wdev->iftype == NL80211_IFTYPE_ADHOC &&
 519                             wdev->wext.default_key == -1) {
 520                                 __cfg80211_leave_ibss(rdev, wdev->netdev, true);
 521                                 rejoin = true;
 522                         }
 523                         err = rdev_set_default_key(rdev, dev, idx, true, true);
 524                 }
 525                 if (!err) {
 526                         wdev->wext.default_key = idx;
 527                         if (rejoin)
 528                                 err = cfg80211_ibss_wext_join(rdev, wdev);
 529                 }
 530                 return err;
 531         }
 532
 533         if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
 534             (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
 535                 if (wdev->current_bss)
 536                         err = rdev_set_default_mgmt_key(rdev, dev, idx);
 537                 if (!err)
 538                         wdev->wext.default_mgmt_key = idx;
 539                 return err;
 540         }
 541
 542         return 0;
 543 }
 544
 545 static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 546                                    struct net_device *dev, bool pairwise,
 547                                    const u8 *addr, bool remove, bool tx_key,
 548                                    int idx, struct key_params *params)
 549 {
 550         int err;
 551
 552         wdev_lock(dev->ieee80211_ptr);
 553         err = __cfg80211_set_encryption(rdev, dev, pairwise, addr,
 554                                         remove, tx_key, idx, params);
 555         wdev_unlock(dev->ieee80211_ptr);
 556
 557         return err;
 558 }
 559
 560 static int cfg80211_wext_siwencode(struct net_device *dev,
 561                                    struct iw_request_info *info,
 562                                    struct iw_point *erq, char *keybuf)
 563 {
 564         struct wireless_dev *wdev = dev->ieee80211_ptr;
 565         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 566         int idx, err;
 567         bool remove = false;
 568         struct key_params params;
 569
 570         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 571             wdev->iftype != NL80211_IFTYPE_ADHOC)
 572                 return -EOPNOTSUPP;
 573
 574         /* no use -- only MFP (set_default_mgmt_key) is optional */
 575         if (!rdev->ops->del_key ||
 576             !rdev->ops->add_key ||
 577             !rdev->ops->set_default_key)
 578                 return -EOPNOTSUPP;
 579
 580         idx = erq->flags & IW_ENCODE_INDEX;
 581         if (idx == 0) {
 582                 idx = wdev->wext.default_key;
 583                 if (idx < 0)
 584                         idx = 0;
 585         } else if (idx < 1 || idx > 4)
 586                 return -EINVAL;
 587         else
 588                 idx--;
 589
 590         if (erq->flags & IW_ENCODE_DISABLED)
 591                 remove = true;
 592         else if (erq->length == 0) {
 593                 /* No key data - just set the default TX key index */
 594                 err = 0;
 595                 wdev_lock(wdev);
 596                 if (wdev->current_bss)
 597                         err = rdev_set_default_key(rdev, dev, idx, true,
 598                                                    true);
 599                 if (!err)
 600                         wdev->wext.default_key = idx;
 601                 wdev_unlock(wdev);
 602                 return err;
 603         }
 604
 605         memset(&params, 0, sizeof(params));
 606         params.key = keybuf;
 607         params.key_len = erq->length;
 608         if (erq->length == 5)
 609                 params.cipher = WLAN_CIPHER_SUITE_WEP40;
 610         else if (erq->length == 13)
 611                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
 612         else if (!remove)
 613                 return -EINVAL;
 614
 615         return cfg80211_set_encryption(rdev, dev, false, NULL, remove,
 616                                        wdev->wext.default_key == -1,
 617                                        idx, &params);
 618 }
 619
 620 static int cfg80211_wext_siwencodeext(struct net_device *dev,
 621                                       struct iw_request_info *info,
 622                                       struct iw_point *erq, char *extra)
 623 {
 624         struct wireless_dev *wdev = dev->ieee80211_ptr;
 625         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 626         struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
 627         const u8 *addr;
 628         int idx;
 629         bool remove = false;
 630         struct key_params params;
 631         u32 cipher;
 632
 633         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 634             wdev->iftype != NL80211_IFTYPE_ADHOC)
 635                 return -EOPNOTSUPP;
 636
 637         /* no use -- only MFP (set_default_mgmt_key) is optional */
 638         if (!rdev->ops->del_key ||
 639             !rdev->ops->add_key ||
 640             !rdev->ops->set_default_key)
 641                 return -EOPNOTSUPP;
 642
 643         switch (ext->alg) {
 644         case IW_ENCODE_ALG_NONE:
 645                 remove = true;
 646                 cipher = 0;
 647                 break;
 648         case IW_ENCODE_ALG_WEP:
 649                 if (ext->key_len == 5)
 650                         cipher = WLAN_CIPHER_SUITE_WEP40;
 651                 else if (ext->key_len == 13)
 652                         cipher = WLAN_CIPHER_SUITE_WEP104;
 653                 else
 654                         return -EINVAL;
 655                 break;
 656         case IW_ENCODE_ALG_TKIP:
 657                 cipher = WLAN_CIPHER_SUITE_TKIP;
 658                 break;
 659         case IW_ENCODE_ALG_CCMP:
 660                 cipher = WLAN_CIPHER_SUITE_CCMP;
 661                 break;
 662         case IW_ENCODE_ALG_AES_CMAC:
 663                 cipher = WLAN_CIPHER_SUITE_AES_CMAC;
 664                 break;
 665         default:
 666                 return -EOPNOTSUPP;
 667         }
 668
 669         if (erq->flags & IW_ENCODE_DISABLED)
 670                 remove = true;
 671
 672         idx = erq->flags & IW_ENCODE_INDEX;
 673         if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
 674                 if (idx < 4 || idx > 5) {
 675                         idx = wdev->wext.default_mgmt_key;
 676                         if (idx < 0)
 677                                 return -EINVAL;
 678                 } else
 679                         idx--;
 680         } else {
 681                 if (idx < 1 || idx > 4) {
 682                         idx = wdev->wext.default_key;
 683                         if (idx < 0)
 684                                 return -EINVAL;
 685                 } else
 686                         idx--;
 687         }
 688
 689         addr = ext->addr.sa_data;
 690         if (is_broadcast_ether_addr(addr))
 691                 addr = NULL;
 692
 693         memset(&params, 0, sizeof(params));
 694         params.key = ext->key;
 695         params.key_len = ext->key_len;
 696         params.cipher = cipher;
 697
 698         if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID) {
 699                 params.seq = ext->rx_seq;
 700                 params.seq_len = 6;
 701         }
 702
 703         return cfg80211_set_encryption(
 704                         rdev, dev,
 705                         !(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY),
 706                         addr, remove,
 707                         ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
 708                         idx, &params);
 709 }
 710
 711 static int cfg80211_wext_giwencode(struct net_device *dev,
 712                                    struct iw_request_info *info,
 713                                    struct iw_point *erq, char *keybuf)
 714 {
 715         struct wireless_dev *wdev = dev->ieee80211_ptr;
 716         int idx;
 717
 718         if (wdev->iftype != NL80211_IFTYPE_STATION &&
 719             wdev->iftype != NL80211_IFTYPE_ADHOC)
 720                 return -EOPNOTSUPP;
 721
 722         idx = erq->flags & IW_ENCODE_INDEX;
 723         if (idx == 0) {
 724                 idx = wdev->wext.default_key;
 725                 if (idx < 0)
 726                         idx = 0;
 727         } else if (idx < 1 || idx > 4)
 728                 return -EINVAL;
 729         else
 730                 idx--;
 731
 732         erq->flags = idx + 1;
 733
 734         if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
 735                 erq->flags |= IW_ENCODE_DISABLED;
 736                 erq->length = 0;
 737                 return 0;
 738         }
 739
 740         erq->length = min_t(size_t, erq->length,
 741                             wdev->wext.keys->params[idx].key_len);
 742         memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
 743         erq->flags |= IW_ENCODE_ENABLED;
 744
 745         return 0;
 746 }
 747
 748 static int cfg80211_wext_siwfreq(struct net_device *dev,
 749                                  struct iw_request_info *info,
 750                                  struct iw_freq *wextfreq, char *extra)
 751 {
 752         struct wireless_dev *wdev = dev->ieee80211_ptr;
 753         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 754         struct cfg80211_chan_def chandef = {
 755                 .width = NL80211_CHAN_WIDTH_20_NOHT,
 756         };
 757         int freq;
 758
 759         switch (wdev->iftype) {
 760         case NL80211_IFTYPE_STATION:
 761                 return cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
 762         case NL80211_IFTYPE_ADHOC:
 763                 return cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
 764         case NL80211_IFTYPE_MONITOR:
 765                 freq = cfg80211_wext_freq(wextfreq);
 766                 if (freq < 0)
 767                         return freq;
 768                 if (freq == 0)
 769                         return -EINVAL;
 770                 chandef.center_freq1 = freq;
 771                 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
 772                 if (!chandef.chan)
 773                         return -EINVAL;
 774                 return cfg80211_set_monitor_channel(rdev, &chandef);
 775         case NL80211_IFTYPE_MESH_POINT:
 776                 freq = cfg80211_wext_freq(wextfreq);
 777                 if (freq < 0)
 778                         return freq;
 779                 if (freq == 0)
 780                         return -EINVAL;
 781                 chandef.center_freq1 = freq;
 782                 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
 783                 if (!chandef.chan)
 784                         return -EINVAL;
 785                 return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
 786         default:
 787                 return -EOPNOTSUPP;
 788         }
 789 }
 790
 791 static int cfg80211_wext_giwfreq(struct net_device *dev,
 792                                  struct iw_request_info *info,
 793                                  struct iw_freq *freq, char *extra)
 794 {
 795         struct wireless_dev *wdev = dev->ieee80211_ptr;
 796         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 797         struct cfg80211_chan_def chandef = {};
 798         int ret;
 799
 800         switch (wdev->iftype) {
 801         case NL80211_IFTYPE_STATION:
 802                 return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
 803         case NL80211_IFTYPE_ADHOC:
 804                 return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
 805         case NL80211_IFTYPE_MONITOR:
 806                 if (!rdev->ops->get_channel)
 807                         return -EINVAL;
 808
 809                 ret = rdev_get_channel(rdev, wdev, &chandef);
 810                 if (ret)
 811                         return ret;
 812                 freq->m = chandef.chan->center_freq;
 813                 freq->e = 6;
 814                 return 0;
 815         default:
 816                 return -EINVAL;
 817         }
 818 }
 819
 820 static int cfg80211_wext_siwtxpower(struct net_device *dev,
 821                                     struct iw_request_info *info,
 822                                     union iwreq_data *data, char *extra)
 823 {
 824         struct wireless_dev *wdev = dev->ieee80211_ptr;
 825         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 826         enum nl80211_tx_power_setting type;
 827         int dbm = 0;
 828
 829         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 830                 return -EINVAL;
 831         if (data->txpower.flags & IW_TXPOW_RANGE)
 832                 return -EINVAL;
 833
 834         if (!rdev->ops->set_tx_power)
 835                 return -EOPNOTSUPP;
 836
 837         /* only change when not disabling */
 838         if (!data->txpower.disabled) {
 839                 rfkill_set_sw_state(rdev->rfkill, false);
 840
 841                 if (data->txpower.fixed) {
 842                         /*
 843                          * wext doesn't support negative values, see
 844                          * below where it's for automatic
 845                          */
 846                         if (data->txpower.value < 0)
 847                                 return -EINVAL;
 848                         dbm = data->txpower.value;
 849                         type = NL80211_TX_POWER_FIXED;
 850                         /* TODO: do regulatory check! */
 851                 } else {
 852                         /*
 853                          * Automatic power level setting, max being the value
 854                          * passed in from userland.
 855                          */
 856                         if (data->txpower.value < 0) {
 857                                 type = NL80211_TX_POWER_AUTOMATIC;
 858                         } else {
 859                                 dbm = data->txpower.value;
 860                                 type = NL80211_TX_POWER_LIMITED;
 861                         }
 862                 }
 863         } else {
 864                 if (rfkill_set_sw_state(rdev->rfkill, true))
 865                         schedule_work(&rdev->rfkill_block);
 866                 return 0;
 867         }
 868
 869         return rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm));
 870 }
 871
 872 static int cfg80211_wext_giwtxpower(struct net_device *dev,
 873                                     struct iw_request_info *info,
 874                                     union iwreq_data *data, char *extra)
 875 {
 876         struct wireless_dev *wdev = dev->ieee80211_ptr;
 877         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 878         int err, val;
 879
 880         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 881                 return -EINVAL;
 882         if (data->txpower.flags & IW_TXPOW_RANGE)
 883                 return -EINVAL;
 884
 885         if (!rdev->ops->get_tx_power)
 886                 return -EOPNOTSUPP;
 887
 888         err = rdev_get_tx_power(rdev, wdev, &val);
 889         if (err)
 890                 return err;
 891
 892         /* well... oh well */
 893         data->txpower.fixed = 1;
 894         data->txpower.disabled = rfkill_blocked(rdev->rfkill);
 895         data->txpower.value = val;
 896         data->txpower.flags = IW_TXPOW_DBM;
 897
 898         return 0;
 899 }
 900
 901 static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
 902                                  s32 auth_alg)
 903 {
 904         int nr_alg = 0;
 905
 906         if (!auth_alg)
 907                 return -EINVAL;
 908
 909         if (auth_alg & ~(IW_AUTH_ALG_OPEN_SYSTEM |
 910                          IW_AUTH_ALG_SHARED_KEY |
 911                          IW_AUTH_ALG_LEAP))
 912                 return -EINVAL;
 913
 914         if (auth_alg & IW_AUTH_ALG_OPEN_SYSTEM) {
 915                 nr_alg++;
 916                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
 917         }
 918
 919         if (auth_alg & IW_AUTH_ALG_SHARED_KEY) {
 920                 nr_alg++;
 921                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_SHARED_KEY;
 922         }
 923
 924         if (auth_alg & IW_AUTH_ALG_LEAP) {
 925                 nr_alg++;
 926                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_NETWORK_EAP;
 927         }
 928
 929         if (nr_alg > 1)
 930                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
 931
 932         return 0;
 933 }
 934
 935 static int cfg80211_set_wpa_version(struct wireless_dev *wdev, u32 wpa_versions)
 936 {
 937         if (wpa_versions & ~(IW_AUTH_WPA_VERSION_WPA |
 938                              IW_AUTH_WPA_VERSION_WPA2|
 939                              IW_AUTH_WPA_VERSION_DISABLED))
 940                 return -EINVAL;
 941
 942         if ((wpa_versions & IW_AUTH_WPA_VERSION_DISABLED) &&
 943             (wpa_versions & (IW_AUTH_WPA_VERSION_WPA|
 944                              IW_AUTH_WPA_VERSION_WPA2)))
 945                 return -EINVAL;
 946
 947         if (wpa_versions & IW_AUTH_WPA_VERSION_DISABLED)
 948                 wdev->wext.connect.crypto.wpa_versions &=
 949                         ~(NL80211_WPA_VERSION_1|NL80211_WPA_VERSION_2);
 950
 951         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA)
 952                 wdev->wext.connect.crypto.wpa_versions |=
 953                         NL80211_WPA_VERSION_1;
 954
 955         if (wpa_versions & IW_AUTH_WPA_VERSION_WPA2)
 956                 wdev->wext.connect.crypto.wpa_versions |=
 957                         NL80211_WPA_VERSION_2;
 958
 959         return 0;
 960 }
 961
 962 static int cfg80211_set_cipher_group(struct wireless_dev *wdev, u32 cipher)
 963 {
 964         if (cipher & IW_AUTH_CIPHER_WEP40)
 965                 wdev->wext.connect.crypto.cipher_group =
 966                         WLAN_CIPHER_SUITE_WEP40;
 967         else if (cipher & IW_AUTH_CIPHER_WEP104)
 968                 wdev->wext.connect.crypto.cipher_group =
 969                         WLAN_CIPHER_SUITE_WEP104;
 970         else if (cipher & IW_AUTH_CIPHER_TKIP)
 971                 wdev->wext.connect.crypto.cipher_group =
 972                         WLAN_CIPHER_SUITE_TKIP;
 973         else if (cipher & IW_AUTH_CIPHER_CCMP)
 974                 wdev->wext.connect.crypto.cipher_group =
 975                         WLAN_CIPHER_SUITE_CCMP;
 976         else if (cipher & IW_AUTH_CIPHER_AES_CMAC)
 977                 wdev->wext.connect.crypto.cipher_group =
 978                         WLAN_CIPHER_SUITE_AES_CMAC;
 979         else if (cipher & IW_AUTH_CIPHER_NONE)
 980                 wdev->wext.connect.crypto.cipher_group = 0;
 981         else
 982                 return -EINVAL;
 983
 984         return 0;
 985 }
 986
 987 static int cfg80211_set_cipher_pairwise(struct wireless_dev *wdev, u32 cipher)
 988 {
 989         int nr_ciphers = 0;
 990         u32 *ciphers_pairwise = wdev->wext.connect.crypto.ciphers_pairwise;
 991
 992         if (cipher & IW_AUTH_CIPHER_WEP40) {
 993                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP40;
 994                 nr_ciphers++;
 995         }
 996
 997         if (cipher & IW_AUTH_CIPHER_WEP104) {
 998                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_WEP104;
 999                 nr_ciphers++;
1000         }
1001
1002         if (cipher & IW_AUTH_CIPHER_TKIP) {
1003                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_TKIP;
1004                 nr_ciphers++;
1005         }
1006
1007         if (cipher & IW_AUTH_CIPHER_CCMP) {
1008                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_CCMP;
1009                 nr_ciphers++;
1010         }
1011
1012         if (cipher & IW_AUTH_CIPHER_AES_CMAC) {
1013                 ciphers_pairwise[nr_ciphers] = WLAN_CIPHER_SUITE_AES_CMAC;
1014                 nr_ciphers++;
1015         }
1016
1017         BUILD_BUG_ON(NL80211_MAX_NR_CIPHER_SUITES < 5);
1018
1019         wdev->wext.connect.crypto.n_ciphers_pairwise = nr_ciphers;
1020
1021         return 0;
1022 }
1023
1024
1025 static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
1026 {
1027         int nr_akm_suites = 0;
1028
1029         if (key_mgt & ~(IW_AUTH_KEY_MGMT_802_1X |
1030                         IW_AUTH_KEY_MGMT_PSK))
1031                 return -EINVAL;
1032
1033         if (key_mgt & IW_AUTH_KEY_MGMT_802_1X) {
1034                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1035                         WLAN_AKM_SUITE_8021X;
1036                 nr_akm_suites++;
1037         }
1038
1039         if (key_mgt & IW_AUTH_KEY_MGMT_PSK) {
1040                 wdev->wext.connect.crypto.akm_suites[nr_akm_suites] =
1041                         WLAN_AKM_SUITE_PSK;
1042                 nr_akm_suites++;
1043         }
1044
1045         wdev->wext.connect.crypto.n_akm_suites = nr_akm_suites;
1046
1047         return 0;
1048 }
1049
1050 static int cfg80211_wext_siwauth(struct net_device *dev,
1051                                  struct iw_request_info *info,
1052                                  struct iw_param *data, char *extra)
1053 {
1054         struct wireless_dev *wdev = dev->ieee80211_ptr;
1055
1056         if (wdev->iftype != NL80211_IFTYPE_STATION)
1057                 return -EOPNOTSUPP;
1058
1059         switch (data->flags & IW_AUTH_INDEX) {
1060         case IW_AUTH_PRIVACY_INVOKED:
1061                 wdev->wext.connect.privacy = data->value;
1062                 return 0;
1063         case IW_AUTH_WPA_VERSION:
1064                 return cfg80211_set_wpa_version(wdev, data->value);
1065         case IW_AUTH_CIPHER_GROUP:
1066                 return cfg80211_set_cipher_group(wdev, data->value);
1067         case IW_AUTH_KEY_MGMT:
1068                 return cfg80211_set_key_mgt(wdev, data->value);
1069         case IW_AUTH_CIPHER_PAIRWISE:
1070                 return cfg80211_set_cipher_pairwise(wdev, data->value);
1071         case IW_AUTH_80211_AUTH_ALG:
1072                 return cfg80211_set_auth_alg(wdev, data->value);
1073         case IW_AUTH_WPA_ENABLED:
1074         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1075         case IW_AUTH_DROP_UNENCRYPTED:
1076         case IW_AUTH_MFP:
1077                 return 0;
1078         default:
1079                 return -EOPNOTSUPP;
1080         }
1081 }
1082
1083 static int cfg80211_wext_giwauth(struct net_device *dev,
1084                                  struct iw_request_info *info,
1085                                  struct iw_param *data, char *extra)
1086 {
1087         /* XXX: what do we need? */
1088
1089         return -EOPNOTSUPP;
1090 }
1091
1092 static int cfg80211_wext_siwpower(struct net_device *dev,
1093                                   struct iw_request_info *info,
1094                                   struct iw_param *wrq, char *extra)
1095 {
1096         struct wireless_dev *wdev = dev->ieee80211_ptr;
1097         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1098         bool ps = wdev->ps;
1099         int timeout = wdev->ps_timeout;
1100         int err;
1101
1102         if (wdev->iftype != NL80211_IFTYPE_STATION)
1103                 return -EINVAL;
1104
1105         if (!rdev->ops->set_power_mgmt)
1106                 return -EOPNOTSUPP;
1107
1108         if (wrq->disabled) {
1109                 ps = false;
1110         } else {
1111                 switch (wrq->flags & IW_POWER_MODE) {
1112                 case IW_POWER_ON:       /* If not specified */
1113                 case IW_POWER_MODE:     /* If set all mask */
1114                 case IW_POWER_ALL_R:    /* If explicitely state all */
1115                         ps = true;
1116                         break;
1117                 default:                /* Otherwise we ignore */
1118                         return -EINVAL;
1119                 }
1120
1121                 if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
1122                         return -EINVAL;
1123
1124                 if (wrq->flags & IW_POWER_TIMEOUT)
1125                         timeout = wrq->value / 1000;
1126         }
1127
1128         err = rdev_set_power_mgmt(rdev, dev, ps, timeout);
1129         if (err)
1130                 return err;
1131
1132         wdev->ps = ps;
1133         wdev->ps_timeout = timeout;
1134
1135         return 0;
1136
1137 }
1138
1139 static int cfg80211_wext_giwpower(struct net_device *dev,
1140                                   struct iw_request_info *info,
1141                                   struct iw_param *wrq, char *extra)
1142 {
1143         struct wireless_dev *wdev = dev->ieee80211_ptr;
1144
1145         wrq->disabled = !wdev->ps;
1146
1147         return 0;
1148 }
1149
1150 static int cfg80211_wext_siwrate(struct net_device *dev,
1151                                  struct iw_request_info *info,
1152                                  struct iw_param *rate, char *extra)
1153 {
1154         struct wireless_dev *wdev = dev->ieee80211_ptr;
1155         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1156         struct cfg80211_bitrate_mask mask;
1157         u32 fixed, maxrate;
1158         struct ieee80211_supported_band *sband;
1159         int band, ridx;
1160         bool match = false;
1161
1162         if (!rdev->ops->set_bitrate_mask)
1163                 return -EOPNOTSUPP;
1164
1165         memset(&mask, 0, sizeof(mask));
1166         fixed = 0;
1167         maxrate = (u32)-1;
1168
1169         if (rate->value < 0) {
1170                 /* nothing */
1171         } else if (rate->fixed) {
1172                 fixed = rate->value / 100000;
1173         } else {
1174                 maxrate = rate->value / 100000;
1175         }
1176
1177         for (band = 0; band < NUM_NL80211_BANDS; band++) {
1178                 sband = wdev->wiphy->bands[band];
1179                 if (sband == NULL)
1180                         continue;
1181                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
1182                         struct ieee80211_rate *srate = &sband->bitrates[ridx];
1183                         if (fixed == srate->bitrate) {
1184                                 mask.control[band].legacy = 1 << ridx;
1185                                 match = true;
1186                                 break;
1187                         }
1188                         if (srate->bitrate <= maxrate) {
1189                                 mask.control[band].legacy |= 1 << ridx;
1190                                 match = true;
1191                         }
1192                 }
1193         }
1194
1195         if (!match)
1196                 return -EINVAL;
1197
1198         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
1199 }
1200
1201 static int cfg80211_wext_giwrate(struct net_device *dev,
1202                                  struct iw_request_info *info,
1203                                  struct iw_param *rate, char *extra)
1204 {
1205         struct wireless_dev *wdev = dev->ieee80211_ptr;
1206         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1207         struct station_info sinfo = {};
1208         u8 addr[ETH_ALEN];
1209         int err;
1210
1211         if (wdev->iftype != NL80211_IFTYPE_STATION)
1212                 return -EOPNOTSUPP;
1213
1214         if (!rdev->ops->get_station)
1215                 return -EOPNOTSUPP;
1216
1217         err = 0;
1218         wdev_lock(wdev);
1219         if (wdev->current_bss)
1220                 memcpy(addr, wdev->current_bss->pub.bssid, ETH_ALEN);
1221         else
1222                 err = -EOPNOTSUPP;
1223         wdev_unlock(wdev);
1224         if (err)
1225                 return err;
1226
1227         err = rdev_get_station(rdev, dev, addr, &sinfo);
1228         if (err)
1229                 return err;
1230
1231         if (!(sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))) {
1232                 err = -EOPNOTSUPP;
1233                 goto free;
1234         }
1235
1236         rate->value = 100000 * cfg80211_calculate_bitrate(&sinfo.txrate);
1237
1238 free:
1239         cfg80211_sinfo_release_content(&sinfo);
1240         return err;
1241 }
1242
1243 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
1244 static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
1245 {
1246         struct wireless_dev *wdev = dev->ieee80211_ptr;
1247         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1248         /* we are under RTNL - globally locked - so can use static structs */
1249         static struct iw_statistics wstats;
1250         static struct station_info sinfo = {};
1251         u8 bssid[ETH_ALEN];
1252
1253         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
1254                 return NULL;
1255
1256         if (!rdev->ops->get_station)
1257                 return NULL;
1258
1259         /* Grab BSSID of current BSS, if any */
1260         wdev_lock(wdev);
1261         if (!wdev->current_bss) {
1262                 wdev_unlock(wdev);
1263                 return NULL;
1264         }
1265         memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
1266         wdev_unlock(wdev);
1267
1268         memset(&sinfo, 0, sizeof(sinfo));
1269
1270         if (rdev_get_station(rdev, dev, bssid, &sinfo))
1271                 return NULL;
1272
1273         memset(&wstats, 0, sizeof(wstats));
1274
1275         switch (rdev->wiphy.signal_type) {
1276         case CFG80211_SIGNAL_TYPE_MBM:
1277                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) {
1278                         int sig = sinfo.signal;
1279                         wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1280                         wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1281                         wstats.qual.updated |= IW_QUAL_DBM;
1282                         wstats.qual.level = sig;
1283                         if (sig < -110)
1284                                 sig = -110;
1285                         else if (sig > -40)
1286                                 sig = -40;
1287                         wstats.qual.qual = sig + 110;
1288                         break;
1289                 }
1290                 fallthrough;
1291         case CFG80211_SIGNAL_TYPE_UNSPEC:
1292                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL)) {
1293                         wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
1294                         wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
1295                         wstats.qual.level = sinfo.signal;
1296                         wstats.qual.qual = sinfo.signal;
1297                         break;
1298                 }
1299                 fallthrough;
1300         default:
1301                 wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
1302                 wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
1303         }
1304
1305         wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
1306         if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC))
1307                 wstats.discard.misc = sinfo.rx_dropped_misc;
1308         if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_FAILED))
1309                 wstats.discard.retries = sinfo.tx_failed;
1310
1311         cfg80211_sinfo_release_content(&sinfo);
1312
1313         return &wstats;
1314 }
1315
1316 static int cfg80211_wext_siwap(struct net_device *dev,
1317                                struct iw_request_info *info,
1318                                struct sockaddr *ap_addr, char *extra)
1319 {
1320         struct wireless_dev *wdev = dev->ieee80211_ptr;
1321
1322         switch (wdev->iftype) {
1323         case NL80211_IFTYPE_ADHOC:
1324                 return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
1325         case NL80211_IFTYPE_STATION:
1326                 return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
1327         default:
1328                 return -EOPNOTSUPP;
1329         }
1330 }
1331
1332 static int cfg80211_wext_giwap(struct net_device *dev,
1333                                struct iw_request_info *info,
1334                                struct sockaddr *ap_addr, char *extra)
1335 {
1336         struct wireless_dev *wdev = dev->ieee80211_ptr;
1337
1338         switch (wdev->iftype) {
1339         case NL80211_IFTYPE_ADHOC:
1340                 return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
1341         case NL80211_IFTYPE_STATION:
1342                 return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
1343         default:
1344                 return -EOPNOTSUPP;
1345         }
1346 }
1347
1348 static int cfg80211_wext_siwessid(struct net_device *dev,
1349                                   struct iw_request_info *info,
1350                                   struct iw_point *data, char *ssid)
1351 {
1352         struct wireless_dev *wdev = dev->ieee80211_ptr;
1353
1354         switch (wdev->iftype) {
1355         case NL80211_IFTYPE_ADHOC:
1356                 return cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
1357         case NL80211_IFTYPE_STATION:
1358                 return cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
1359         default:
1360                 return -EOPNOTSUPP;
1361         }
1362 }
1363
1364 static int cfg80211_wext_giwessid(struct net_device *dev,
1365                                   struct iw_request_info *info,
1366                                   struct iw_point *data, char *ssid)
1367 {
1368         struct wireless_dev *wdev = dev->ieee80211_ptr;
1369
1370         data->flags = 0;
1371         data->length = 0;
1372
1373         switch (wdev->iftype) {
1374         case NL80211_IFTYPE_ADHOC:
1375                 return cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
1376         case NL80211_IFTYPE_STATION:
1377                 return cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
1378         default:
1379                 return -EOPNOTSUPP;
1380         }
1381 }
1382
1383 static int cfg80211_wext_siwpmksa(struct net_device *dev,
1384                                   struct iw_request_info *info,
1385                                   struct iw_point *data, char *extra)
1386 {
1387         struct wireless_dev *wdev = dev->ieee80211_ptr;
1388         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
1389         struct cfg80211_pmksa cfg_pmksa;
1390         struct iw_pmksa *pmksa = (struct iw_pmksa *)extra;
1391
1392         memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa));
1393
1394         if (wdev->iftype != NL80211_IFTYPE_STATION)
1395                 return -EINVAL;
1396
1397         cfg_pmksa.bssid = pmksa->bssid.sa_data;
1398         cfg_pmksa.pmkid = pmksa->pmkid;
1399
1400         switch (pmksa->cmd) {
1401         case IW_PMKSA_ADD:
1402                 if (!rdev->ops->set_pmksa)
1403                         return -EOPNOTSUPP;
1404
1405                 return rdev_set_pmksa(rdev, dev, &cfg_pmksa);
1406
1407         case IW_PMKSA_REMOVE:
1408                 if (!rdev->ops->del_pmksa)
1409                         return -EOPNOTSUPP;
1410
1411                 return rdev_del_pmksa(rdev, dev, &cfg_pmksa);
1412
1413         case IW_PMKSA_FLUSH:
1414                 if (!rdev->ops->flush_pmksa)
1415                         return -EOPNOTSUPP;
1416
1417                 return rdev_flush_pmksa(rdev, dev);
1418
1419         default:
1420                 return -EOPNOTSUPP;
1421         }
1422 }
1423
1424 #define DEFINE_WEXT_COMPAT_STUB(func, type)                     \
1425         static int __ ## func(struct net_device *dev,           \
1426                               struct iw_request_info *info,     \
1427                               union iwreq_data *wrqu,           \
1428                               char *extra)                      \
1429         {                                                       \
1430                 return func(dev, info, (type *)wrqu, extra);    \
1431         }
1432
1433 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwname, char)
1434 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwfreq, struct iw_freq)
1435 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwfreq, struct iw_freq)
1436 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwmode, u32)
1437 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwmode, u32)
1438 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrange, struct iw_point)
1439 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwap, struct sockaddr)
1440 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwap, struct sockaddr)
1441 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwmlme, struct iw_point)
1442 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwscan, struct iw_point)
1443 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwessid, struct iw_point)
1444 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwessid, struct iw_point)
1445 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwrate, struct iw_param)
1446 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrate, struct iw_param)
1447 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwrts, struct iw_param)
1448 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwrts, struct iw_param)
1449 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwfrag, struct iw_param)
1450 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwfrag, struct iw_param)
1451 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwretry, struct iw_param)
1452 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwretry, struct iw_param)
1453 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwencode, struct iw_point)
1454 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwencode, struct iw_point)
1455 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwpower, struct iw_param)
1456 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwpower, struct iw_param)
1457 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwgenie, struct iw_point)
1458 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_giwauth, struct iw_param)
1459 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwauth, struct iw_param)
1460 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwencodeext, struct iw_point)
1461 DEFINE_WEXT_COMPAT_STUB(cfg80211_wext_siwpmksa, struct iw_point)
1462
1463 static const iw_handler cfg80211_handlers[] = {
1464         [IW_IOCTL_IDX(SIOCGIWNAME)]     = __cfg80211_wext_giwname,
1465         [IW_IOCTL_IDX(SIOCSIWFREQ)]     = __cfg80211_wext_siwfreq,
1466         [IW_IOCTL_IDX(SIOCGIWFREQ)]     = __cfg80211_wext_giwfreq,
1467         [IW_IOCTL_IDX(SIOCSIWMODE)]     = __cfg80211_wext_siwmode,
1468         [IW_IOCTL_IDX(SIOCGIWMODE)]     = __cfg80211_wext_giwmode,
1469         [IW_IOCTL_IDX(SIOCGIWRANGE)]    = __cfg80211_wext_giwrange,
1470         [IW_IOCTL_IDX(SIOCSIWAP)]       = __cfg80211_wext_siwap,
1471         [IW_IOCTL_IDX(SIOCGIWAP)]       = __cfg80211_wext_giwap,
1472         [IW_IOCTL_IDX(SIOCSIWMLME)]     = __cfg80211_wext_siwmlme,
1473         [IW_IOCTL_IDX(SIOCSIWSCAN)]     = cfg80211_wext_siwscan,
1474         [IW_IOCTL_IDX(SIOCGIWSCAN)]     = __cfg80211_wext_giwscan,
1475         [IW_IOCTL_IDX(SIOCSIWESSID)]    = __cfg80211_wext_siwessid,
1476         [IW_IOCTL_IDX(SIOCGIWESSID)]    = __cfg80211_wext_giwessid,
1477         [IW_IOCTL_IDX(SIOCSIWRATE)]     = __cfg80211_wext_siwrate,
1478         [IW_IOCTL_IDX(SIOCGIWRATE)]     = __cfg80211_wext_giwrate,
1479         [IW_IOCTL_IDX(SIOCSIWRTS)]      = __cfg80211_wext_siwrts,
1480         [IW_IOCTL_IDX(SIOCGIWRTS)]      = __cfg80211_wext_giwrts,
1481         [IW_IOCTL_IDX(SIOCSIWFRAG)]     = __cfg80211_wext_siwfrag,
1482         [IW_IOCTL_IDX(SIOCGIWFRAG)]     = __cfg80211_wext_giwfrag,
1483         [IW_IOCTL_IDX(SIOCSIWTXPOW)]    = cfg80211_wext_siwtxpower,
1484         [IW_IOCTL_IDX(SIOCGIWTXPOW)]    = cfg80211_wext_giwtxpower,
1485         [IW_IOCTL_IDX(SIOCSIWRETRY)]    = __cfg80211_wext_siwretry,
1486         [IW_IOCTL_IDX(SIOCGIWRETRY)]    = __cfg80211_wext_giwretry,
1487         [IW_IOCTL_IDX(SIOCSIWENCODE)]   = __cfg80211_wext_siwencode,
1488         [IW_IOCTL_IDX(SIOCGIWENCODE)]   = __cfg80211_wext_giwencode,
1489         [IW_IOCTL_IDX(SIOCSIWPOWER)]    = __cfg80211_wext_siwpower,
1490         [IW_IOCTL_IDX(SIOCGIWPOWER)]    = __cfg80211_wext_giwpower,
1491         [IW_IOCTL_IDX(SIOCSIWGENIE)]    = __cfg80211_wext_siwgenie,
1492         [IW_IOCTL_IDX(SIOCSIWAUTH)]     = __cfg80211_wext_siwauth,
1493         [IW_IOCTL_IDX(SIOCGIWAUTH)]     = __cfg80211_wext_giwauth,
1494         [IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= __cfg80211_wext_siwencodeext,
1495         [IW_IOCTL_IDX(SIOCSIWPMKSA)]    = __cfg80211_wext_siwpmksa,
1496 };
1497
1498 const struct iw_handler_def cfg80211_wext_handler = {
1499         .num_standard           = ARRAY_SIZE(cfg80211_handlers),
1500         .standard               = cfg80211_handlers,
1501         .get_wireless_stats = cfg80211_wireless_stats,
1502 };