net/wireless/mlme.c

   1 /*
   2  * cfg80211 MLME SAP interface
   3  *
   4  * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
   5  */
   6
   7 #include <linux/kernel.h>
   8 #include <linux/module.h>
   9 #include <linux/netdevice.h>
  10 #include <linux/nl80211.h>
  11 #include <linux/wireless.h>
  12 #include <net/cfg80211.h>
  13 #include <net/iw_handler.h>
  14 #include "core.h"
  15 #include "nl80211.h"
  16
  17 void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len)
  18 {
  19         struct wireless_dev *wdev = dev->ieee80211_ptr;
  20         struct wiphy *wiphy = wdev->wiphy;
  21         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
  22         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
  23         u8 *bssid = mgmt->bssid;
  24         int i;
  25         u16 status = le16_to_cpu(mgmt->u.auth.status_code);
  26         bool done = false;
  27
  28         wdev_lock(wdev);
  29
  30         for (i = 0; i < MAX_AUTH_BSSES; i++) {
  31                 if (wdev->authtry_bsses[i] &&
  32                     memcmp(wdev->authtry_bsses[i]->pub.bssid, bssid,
  33                                                         ETH_ALEN) == 0) {
  34                         if (status == WLAN_STATUS_SUCCESS) {
  35                                 wdev->auth_bsses[i] = wdev->authtry_bsses[i];
  36                         } else {
  37                                 cfg80211_unhold_bss(wdev->authtry_bsses[i]);
  38                                 cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
  39                         }
  40                         wdev->authtry_bsses[i] = NULL;
  41                         done = true;
  42                         break;
  43                 }
  44         }
  45
  46         WARN_ON(!done);
  47
  48         nl80211_send_rx_auth(rdev, dev, buf, len, GFP_KERNEL);
  49         cfg80211_sme_rx_auth(dev, buf, len);
  50
  51         wdev_unlock(wdev);
  52 }
  53 EXPORT_SYMBOL(cfg80211_send_rx_auth);
  54
  55 void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len)
  56 {
  57         u16 status_code;
  58         struct wireless_dev *wdev = dev->ieee80211_ptr;
  59         struct wiphy *wiphy = wdev->wiphy;
  60         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
  61         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
  62         u8 *ie = mgmt->u.assoc_resp.variable;
  63         int i, ieoffs = offsetof(struct ieee80211_mgmt, u.assoc_resp.variable);
  64         struct cfg80211_internal_bss *bss = NULL;
  65
  66         wdev_lock(wdev);
  67
  68         status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
  69
  70         /*
  71          * This is a bit of a hack, we don't notify userspace of
  72          * a (re-)association reply if we tried to send a reassoc
  73          * and got a reject -- we only try again with an assoc
  74          * frame instead of reassoc.
  75          */
  76         if (status_code != WLAN_STATUS_SUCCESS && wdev->conn &&
  77             cfg80211_sme_failed_reassoc(wdev))
  78                 goto out;
  79
  80         nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL);
  81
  82         if (status_code == WLAN_STATUS_SUCCESS) {
  83                 for (i = 0; i < MAX_AUTH_BSSES; i++) {
  84                         if (!wdev->auth_bsses[i])
  85                                 continue;
  86                         if (memcmp(wdev->auth_bsses[i]->pub.bssid, mgmt->bssid,
  87                                    ETH_ALEN) == 0) {
  88                                 bss = wdev->auth_bsses[i];
  89                                 wdev->auth_bsses[i] = NULL;
  90                                 /* additional reference to drop hold */
  91                                 cfg80211_ref_bss(bss);
  92                                 break;
  93                         }
  94                 }
  95
  96                 /*
  97                  * We might be coming here because the driver reported
  98                  * a successful association at the same time as the
  99                  * user requested a deauth. In that case, we will have
 100                  * removed the BSS from the auth_bsses list due to the
 101                  * deauth request when the assoc response makes it. If
 102                  * the two code paths acquire the lock the other way
 103                  * around, that's just the standard situation of a
 104                  * deauth being requested while connected.
 105                  */
 106                 if (!bss)
 107                         goto out;
 108         } else if (wdev->conn) {
 109                 cfg80211_sme_failed_assoc(wdev);
 110                 /*
 111                  * do not call connect_result() now because the
 112                  * sme will schedule work that does it later.
 113                  */
 114                 goto out;
 115         }
 116
 117         if (!wdev->conn && wdev->sme_state == CFG80211_SME_IDLE) {
 118                 /*
 119                  * This is for the userspace SME, the CONNECTING
 120                  * state will be changed to CONNECTED by
 121                  * __cfg80211_connect_result() below.
 122                  */
 123                 wdev->sme_state = CFG80211_SME_CONNECTING;
 124         }
 125
 126         /* this consumes one bss reference (unless bss is NULL) */
 127         __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, ie, len - ieoffs,
 128                                   status_code,
 129                                   status_code == WLAN_STATUS_SUCCESS,
 130                                   bss ? &bss->pub : NULL);
 131         /* drop hold now, and also reference acquired above */
 132         if (bss) {
 133                 cfg80211_unhold_bss(bss);
 134                 cfg80211_put_bss(&bss->pub);
 135         }
 136
 137  out:
 138         wdev_unlock(wdev);
 139 }
 140 EXPORT_SYMBOL(cfg80211_send_rx_assoc);
 141
 142 void __cfg80211_send_deauth(struct net_device *dev,
 143                                    const u8 *buf, size_t len)
 144 {
 145         struct wireless_dev *wdev = dev->ieee80211_ptr;
 146         struct wiphy *wiphy = wdev->wiphy;
 147         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 148         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
 149         const u8 *bssid = mgmt->bssid;
 150         int i;
 151
 152         ASSERT_WDEV_LOCK(wdev);
 153
 154         nl80211_send_deauth(rdev, dev, buf, len, GFP_KERNEL);
 155
 156         if (wdev->current_bss &&
 157             memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) {
 158                 cfg80211_unhold_bss(wdev->current_bss);
 159                 cfg80211_put_bss(&wdev->current_bss->pub);
 160                 wdev->current_bss = NULL;
 161         } else for (i = 0; i < MAX_AUTH_BSSES; i++) {
 162                 if (wdev->auth_bsses[i] &&
 163                     memcmp(wdev->auth_bsses[i]->pub.bssid, bssid, ETH_ALEN) == 0) {
 164                         cfg80211_unhold_bss(wdev->auth_bsses[i]);
 165                         cfg80211_put_bss(&wdev->auth_bsses[i]->pub);
 166                         wdev->auth_bsses[i] = NULL;
 167                         break;
 168                 }
 169                 if (wdev->authtry_bsses[i] &&
 170                     memcmp(wdev->authtry_bsses[i]->pub.bssid, bssid, ETH_ALEN) == 0) {
 171                         cfg80211_unhold_bss(wdev->authtry_bsses[i]);
 172                         cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
 173                         wdev->authtry_bsses[i] = NULL;
 174                         break;
 175                 }
 176         }
 177
 178         if (wdev->sme_state == CFG80211_SME_CONNECTED) {
 179                 u16 reason_code;
 180                 bool from_ap;
 181
 182                 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
 183
 184                 from_ap = memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) != 0;
 185                 __cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap);
 186         } else if (wdev->sme_state == CFG80211_SME_CONNECTING) {
 187                 __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
 188                                           WLAN_STATUS_UNSPECIFIED_FAILURE,
 189                                           false, NULL);
 190         }
 191 }
 192 EXPORT_SYMBOL(__cfg80211_send_deauth);
 193
 194 void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len)
 195 {
 196         struct wireless_dev *wdev = dev->ieee80211_ptr;
 197
 198         wdev_lock(wdev);
 199         __cfg80211_send_deauth(dev, buf, len);
 200         wdev_unlock(wdev);
 201 }
 202 EXPORT_SYMBOL(cfg80211_send_deauth);
 203
 204 void __cfg80211_send_disassoc(struct net_device *dev,
 205                                      const u8 *buf, size_t len)
 206 {
 207         struct wireless_dev *wdev = dev->ieee80211_ptr;
 208         struct wiphy *wiphy = wdev->wiphy;
 209         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 210         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
 211         const u8 *bssid = mgmt->bssid;
 212         int i;
 213         u16 reason_code;
 214         bool from_ap;
 215         bool done = false;
 216
 217         ASSERT_WDEV_LOCK(wdev);
 218
 219         nl80211_send_disassoc(rdev, dev, buf, len, GFP_KERNEL);
 220
 221         if (wdev->sme_state != CFG80211_SME_CONNECTED)
 222                 return;
 223
 224         if (wdev->current_bss &&
 225             memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) {
 226                 for (i = 0; i < MAX_AUTH_BSSES; i++) {
 227                         if (wdev->authtry_bsses[i] || wdev->auth_bsses[i])
 228                                 continue;
 229                         wdev->auth_bsses[i] = wdev->current_bss;
 230                         wdev->current_bss = NULL;
 231                         done = true;
 232                         cfg80211_sme_disassoc(dev, i);
 233                         break;
 234                 }
 235                 WARN_ON(!done);
 236         } else
 237                 WARN_ON(1);
 238
 239
 240         reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
 241
 242         from_ap = memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) != 0;
 243         __cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap);
 244 }
 245 EXPORT_SYMBOL(__cfg80211_send_disassoc);
 246
 247 void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len)
 248 {
 249         struct wireless_dev *wdev = dev->ieee80211_ptr;
 250
 251         wdev_lock(wdev);
 252         __cfg80211_send_disassoc(dev, buf, len);
 253         wdev_unlock(wdev);
 254 }
 255 EXPORT_SYMBOL(cfg80211_send_disassoc);
 256
 257 static void __cfg80211_auth_remove(struct wireless_dev *wdev, const u8 *addr)
 258 {
 259         int i;
 260         bool done = false;
 261
 262         ASSERT_WDEV_LOCK(wdev);
 263
 264         for (i = 0; addr && i < MAX_AUTH_BSSES; i++) {
 265                 if (wdev->authtry_bsses[i] &&
 266                     memcmp(wdev->authtry_bsses[i]->pub.bssid,
 267                            addr, ETH_ALEN) == 0) {
 268                         cfg80211_unhold_bss(wdev->authtry_bsses[i]);
 269                         cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
 270                         wdev->authtry_bsses[i] = NULL;
 271                         done = true;
 272                         break;
 273                 }
 274         }
 275
 276         WARN_ON(!done);
 277 }
 278
 279 void __cfg80211_auth_canceled(struct net_device *dev, const u8 *addr)
 280 {
 281         __cfg80211_auth_remove(dev->ieee80211_ptr, addr);
 282 }
 283 EXPORT_SYMBOL(__cfg80211_auth_canceled);
 284
 285 void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr)
 286 {
 287         struct wireless_dev *wdev = dev->ieee80211_ptr;
 288         struct wiphy *wiphy = wdev->wiphy;
 289         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 290
 291         wdev_lock(wdev);
 292
 293         nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL);
 294         if (wdev->sme_state == CFG80211_SME_CONNECTING)
 295                 __cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
 296                                           WLAN_STATUS_UNSPECIFIED_FAILURE,
 297                                           false, NULL);
 298
 299         __cfg80211_auth_remove(wdev, addr);
 300
 301         wdev_unlock(wdev);
 302 }
 303 EXPORT_SYMBOL(cfg80211_send_auth_timeout);
 304
 305 void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr)
 306 {
 307         struct wireless_dev *wdev = dev->ieee80211_ptr;
 308         struct wiphy *wiphy = wdev->wiphy;
 309         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 310         int i;
 311         bool done = false;
 312
 313         wdev_lock(wdev);
 314
 315         nl80211_send_assoc_timeout(rdev, dev, addr, GFP_KERNEL);
 316         if (wdev->sme_state == CFG80211_SME_CONNECTING)
 317                 __cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
 318                                           WLAN_STATUS_UNSPECIFIED_FAILURE,
 319                                           false, NULL);
 320
 321         for (i = 0; addr && i < MAX_AUTH_BSSES; i++) {
 322                 if (wdev->auth_bsses[i] &&
 323                     memcmp(wdev->auth_bsses[i]->pub.bssid,
 324                            addr, ETH_ALEN) == 0) {
 325                         cfg80211_unhold_bss(wdev->auth_bsses[i]);
 326                         cfg80211_put_bss(&wdev->auth_bsses[i]->pub);
 327                         wdev->auth_bsses[i] = NULL;
 328                         done = true;
 329                         break;
 330                 }
 331         }
 332
 333         WARN_ON(!done);
 334
 335         wdev_unlock(wdev);
 336 }
 337 EXPORT_SYMBOL(cfg80211_send_assoc_timeout);
 338
 339 void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
 340                                   enum nl80211_key_type key_type, int key_id,
 341                                   const u8 *tsc, gfp_t gfp)
 342 {
 343         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
 344         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 345 #ifdef CONFIG_CFG80211_WEXT
 346         union iwreq_data wrqu;
 347         char *buf = kmalloc(128, gfp);
 348
 349         if (buf) {
 350                 sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
 351                         "keyid=%d %scast addr=%pM)", key_id,
 352                         key_type == NL80211_KEYTYPE_GROUP ? "broad" : "uni",
 353                         addr);
 354                 memset(&wrqu, 0, sizeof(wrqu));
 355                 wrqu.data.length = strlen(buf);
 356                 wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
 357                 kfree(buf);
 358         }
 359 #endif
 360
 361         nl80211_michael_mic_failure(rdev, dev, addr, key_type, key_id, tsc, gfp);
 362 }
 363 EXPORT_SYMBOL(cfg80211_michael_mic_failure);
 364
 365 /* some MLME handling for userspace SME */
 366 int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
 367                          struct net_device *dev,
 368                          struct ieee80211_channel *chan,
 369                          enum nl80211_auth_type auth_type,
 370                          const u8 *bssid,
 371                          const u8 *ssid, int ssid_len,
 372                          const u8 *ie, int ie_len,
 373                          const u8 *key, int key_len, int key_idx)
 374 {
 375         struct wireless_dev *wdev = dev->ieee80211_ptr;
 376         struct cfg80211_auth_request req;
 377         struct cfg80211_internal_bss *bss;
 378         int i, err, slot = -1, nfree = 0;
 379
 380         ASSERT_WDEV_LOCK(wdev);
 381
 382         if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
 383                 if (!key || !key_len || key_idx < 0 || key_idx > 4)
 384                         return -EINVAL;
 385
 386         if (wdev->current_bss &&
 387             memcmp(bssid, wdev->current_bss->pub.bssid, ETH_ALEN) == 0)
 388                 return -EALREADY;
 389
 390         for (i = 0; i < MAX_AUTH_BSSES; i++) {
 391                 if (wdev->authtry_bsses[i] &&
 392                     memcmp(bssid, wdev->authtry_bsses[i]->pub.bssid,
 393                                                 ETH_ALEN) == 0)
 394                         return -EALREADY;
 395                 if (wdev->auth_bsses[i] &&
 396                     memcmp(bssid, wdev->auth_bsses[i]->pub.bssid,
 397                                                 ETH_ALEN) == 0)
 398                         return -EALREADY;
 399         }
 400
 401         memset(&req, 0, sizeof(req));
 402
 403         req.ie = ie;
 404         req.ie_len = ie_len;
 405         req.auth_type = auth_type;
 406         req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
 407                                    WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
 408         req.key = key;
 409         req.key_len = key_len;
 410         req.key_idx = key_idx;
 411         if (!req.bss)
 412                 return -ENOENT;
 413
 414         bss = bss_from_pub(req.bss);
 415
 416         for (i = 0; i < MAX_AUTH_BSSES; i++) {
 417                 if (!wdev->auth_bsses[i] && !wdev->authtry_bsses[i]) {
 418                         slot = i;
 419                         nfree++;
 420                 }
 421         }
 422
 423         /* we need one free slot for disassoc and one for this auth */
 424         if (nfree < 2) {
 425                 err = -ENOSPC;
 426                 goto out;
 427         }
 428
 429         wdev->authtry_bsses[slot] = bss;
 430         cfg80211_hold_bss(bss);
 431
 432         err = rdev->ops->auth(&rdev->wiphy, dev, &req);
 433         if (err) {
 434                 wdev->authtry_bsses[slot] = NULL;
 435                 cfg80211_unhold_bss(bss);
 436         }
 437
 438  out:
 439         if (err)
 440                 cfg80211_put_bss(req.bss);
 441         return err;
 442 }
 443
 444 int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
 445                        struct net_device *dev, struct ieee80211_channel *chan,
 446                        enum nl80211_auth_type auth_type, const u8 *bssid,
 447                        const u8 *ssid, int ssid_len,
 448                        const u8 *ie, int ie_len,
 449                        const u8 *key, int key_len, int key_idx)
 450 {
 451         int err;
 452
 453         wdev_lock(dev->ieee80211_ptr);
 454         err = __cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
 455                                    ssid, ssid_len, ie, ie_len,
 456                                    key, key_len, key_idx);
 457         wdev_unlock(dev->ieee80211_ptr);
 458
 459         return err;
 460 }
 461
 462 int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
 463                           struct net_device *dev,
 464                           struct ieee80211_channel *chan,
 465                           const u8 *bssid, const u8 *prev_bssid,
 466                           const u8 *ssid, int ssid_len,
 467                           const u8 *ie, int ie_len, bool use_mfp,
 468                           struct cfg80211_crypto_settings *crypt)
 469 {
 470         struct wireless_dev *wdev = dev->ieee80211_ptr;
 471         struct cfg80211_assoc_request req;
 472         struct cfg80211_internal_bss *bss;
 473         int i, err, slot = -1;
 474         bool was_connected = false;
 475
 476         ASSERT_WDEV_LOCK(wdev);
 477
 478         memset(&req, 0, sizeof(req));
 479
 480         if (wdev->current_bss && prev_bssid &&
 481             memcmp(wdev->current_bss->pub.bssid, prev_bssid, ETH_ALEN) == 0) {
 482                 /*
 483                  * Trying to reassociate: Allow this to proceed and let the old
 484                  * association to be dropped when the new one is completed.
 485                  */
 486                 if (wdev->sme_state == CFG80211_SME_CONNECTED) {
 487                         was_connected = true;
 488                         wdev->sme_state = CFG80211_SME_CONNECTING;
 489                 }
 490         } else if (wdev->current_bss)
 491                 return -EALREADY;
 492
 493         req.ie = ie;
 494         req.ie_len = ie_len;
 495         memcpy(&req.crypto, crypt, sizeof(req.crypto));
 496         req.use_mfp = use_mfp;
 497         req.prev_bssid = prev_bssid;
 498         req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
 499                                    WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
 500         if (!req.bss) {
 501                 if (was_connected)
 502                         wdev->sme_state = CFG80211_SME_CONNECTED;
 503                 return -ENOENT;
 504         }
 505
 506         bss = bss_from_pub(req.bss);
 507
 508         for (i = 0; i < MAX_AUTH_BSSES; i++) {
 509                 if (bss == wdev->auth_bsses[i]) {
 510                         slot = i;
 511                         break;
 512                 }
 513         }
 514
 515         if (slot < 0) {
 516                 err = -ENOTCONN;
 517                 goto out;
 518         }
 519
 520         err = rdev->ops->assoc(&rdev->wiphy, dev, &req);
 521  out:
 522         if (err && was_connected)
 523                 wdev->sme_state = CFG80211_SME_CONNECTED;
 524         /* still a reference in wdev->auth_bsses[slot] */
 525         cfg80211_put_bss(req.bss);
 526         return err;
 527 }
 528
 529 int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
 530                         struct net_device *dev,
 531                         struct ieee80211_channel *chan,
 532                         const u8 *bssid, const u8 *prev_bssid,
 533                         const u8 *ssid, int ssid_len,
 534                         const u8 *ie, int ie_len, bool use_mfp,
 535                         struct cfg80211_crypto_settings *crypt)
 536 {
 537         struct wireless_dev *wdev = dev->ieee80211_ptr;
 538         int err;
 539
 540         wdev_lock(wdev);
 541         err = __cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
 542                                     ssid, ssid_len, ie, ie_len, use_mfp, crypt);
 543         wdev_unlock(wdev);
 544
 545         return err;
 546 }
 547
 548 int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
 549                            struct net_device *dev, const u8 *bssid,
 550                            const u8 *ie, int ie_len, u16 reason)
 551 {
 552         struct wireless_dev *wdev = dev->ieee80211_ptr;
 553         struct cfg80211_deauth_request req;
 554         int i;
 555
 556         ASSERT_WDEV_LOCK(wdev);
 557
 558         memset(&req, 0, sizeof(req));
 559         req.reason_code = reason;
 560         req.ie = ie;
 561         req.ie_len = ie_len;
 562         if (wdev->current_bss &&
 563             memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) {
 564                 req.bss = &wdev->current_bss->pub;
 565         } else for (i = 0; i < MAX_AUTH_BSSES; i++) {
 566                 if (wdev->auth_bsses[i] &&
 567                     memcmp(bssid, wdev->auth_bsses[i]->pub.bssid, ETH_ALEN) == 0) {
 568                         req.bss = &wdev->auth_bsses[i]->pub;
 569                         break;
 570                 }
 571                 if (wdev->authtry_bsses[i] &&
 572                     memcmp(bssid, wdev->authtry_bsses[i]->pub.bssid, ETH_ALEN) == 0) {
 573                         req.bss = &wdev->authtry_bsses[i]->pub;
 574                         break;
 575                 }
 576         }
 577
 578         if (!req.bss)
 579                 return -ENOTCONN;
 580
 581         return rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
 582 }
 583
 584 int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
 585                          struct net_device *dev, const u8 *bssid,
 586                          const u8 *ie, int ie_len, u16 reason)
 587 {
 588         struct wireless_dev *wdev = dev->ieee80211_ptr;
 589         int err;
 590
 591         wdev_lock(wdev);
 592         err = __cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason);
 593         wdev_unlock(wdev);
 594
 595         return err;
 596 }
 597
 598 static int __cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
 599                                     struct net_device *dev, const u8 *bssid,
 600                                     const u8 *ie, int ie_len, u16 reason)
 601 {
 602         struct wireless_dev *wdev = dev->ieee80211_ptr;
 603         struct cfg80211_disassoc_request req;
 604
 605         ASSERT_WDEV_LOCK(wdev);
 606
 607         if (wdev->sme_state != CFG80211_SME_CONNECTED)
 608                 return -ENOTCONN;
 609
 610         if (WARN_ON(!wdev->current_bss))
 611                 return -ENOTCONN;
 612
 613         memset(&req, 0, sizeof(req));
 614         req.reason_code = reason;
 615         req.ie = ie;
 616         req.ie_len = ie_len;
 617         if (memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0)
 618                 req.bss = &wdev->current_bss->pub;
 619         else
 620                 return -ENOTCONN;
 621
 622         return rdev->ops->disassoc(&rdev->wiphy, dev, &req, wdev);
 623 }
 624
 625 int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
 626                            struct net_device *dev, const u8 *bssid,
 627                            const u8 *ie, int ie_len, u16 reason)
 628 {
 629         struct wireless_dev *wdev = dev->ieee80211_ptr;
 630         int err;
 631
 632         wdev_lock(wdev);
 633         err = __cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason);
 634         wdev_unlock(wdev);
 635
 636         return err;
 637 }
 638
 639 void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
 640                         struct net_device *dev)
 641 {
 642         struct wireless_dev *wdev = dev->ieee80211_ptr;
 643         struct cfg80211_deauth_request req;
 644         int i;
 645
 646         ASSERT_WDEV_LOCK(wdev);
 647
 648         if (!rdev->ops->deauth)
 649                 return;
 650
 651         memset(&req, 0, sizeof(req));
 652         req.reason_code = WLAN_REASON_DEAUTH_LEAVING;
 653         req.ie = NULL;
 654         req.ie_len = 0;
 655
 656         if (wdev->current_bss) {
 657                 req.bss = &wdev->current_bss->pub;
 658                 rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
 659                 if (wdev->current_bss) {
 660                         cfg80211_unhold_bss(wdev->current_bss);
 661                         cfg80211_put_bss(&wdev->current_bss->pub);
 662                         wdev->current_bss = NULL;
 663                 }
 664         }
 665
 666         for (i = 0; i < MAX_AUTH_BSSES; i++) {
 667                 if (wdev->auth_bsses[i]) {
 668                         req.bss = &wdev->auth_bsses[i]->pub;
 669                         rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
 670                         if (wdev->auth_bsses[i]) {
 671                                 cfg80211_unhold_bss(wdev->auth_bsses[i]);
 672                                 cfg80211_put_bss(&wdev->auth_bsses[i]->pub);
 673                                 wdev->auth_bsses[i] = NULL;
 674                         }
 675                 }
 676                 if (wdev->authtry_bsses[i]) {
 677                         req.bss = &wdev->authtry_bsses[i]->pub;
 678                         rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
 679                         if (wdev->authtry_bsses[i]) {
 680                                 cfg80211_unhold_bss(wdev->authtry_bsses[i]);
 681                                 cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
 682                                 wdev->authtry_bsses[i] = NULL;
 683                         }
 684                 }
 685         }
 686 }