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         bool done;
  65
  66         wdev_lock(wdev);
  67
  68         status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
  69
  70         nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL);
  71
  72         __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, ie, len - ieoffs,
  73                                   status_code,
  74                                   status_code == WLAN_STATUS_SUCCESS);
  75
  76         if (status_code == WLAN_STATUS_SUCCESS) {
  77                 for (i = 0; wdev->current_bss && i < MAX_AUTH_BSSES; i++) {
  78                         if (wdev->auth_bsses[i] == wdev->current_bss) {
  79                                 cfg80211_unhold_bss(wdev->auth_bsses[i]);
  80                                 cfg80211_put_bss(&wdev->auth_bsses[i]->pub);
  81                                 wdev->auth_bsses[i] = NULL;
  82                                 done = true;
  83                                 break;
  84                         }
  85                 }
  86
  87                 WARN_ON(!done);
  88         }
  89
  90         wdev_unlock(wdev);
  91 }
  92 EXPORT_SYMBOL(cfg80211_send_rx_assoc);
  93
  94 static void __cfg80211_send_deauth(struct net_device *dev,
  95                                    const u8 *buf, size_t len)
  96 {
  97         struct wireless_dev *wdev = dev->ieee80211_ptr;
  98         struct wiphy *wiphy = wdev->wiphy;
  99         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 100         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
 101         const u8 *bssid = mgmt->bssid;
 102         int i;
 103         bool done = false;
 104
 105         ASSERT_WDEV_LOCK(wdev);
 106
 107         nl80211_send_deauth(rdev, dev, buf, len, GFP_KERNEL);
 108
 109         if (wdev->current_bss &&
 110             memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) {
 111                 done = true;
 112                 cfg80211_unhold_bss(wdev->current_bss);
 113                 cfg80211_put_bss(&wdev->current_bss->pub);
 114                 wdev->current_bss = NULL;
 115         } else for (i = 0; i < MAX_AUTH_BSSES; i++) {
 116                 if (wdev->auth_bsses[i] &&
 117                     memcmp(wdev->auth_bsses[i]->pub.bssid, bssid, ETH_ALEN) == 0) {
 118                         cfg80211_unhold_bss(wdev->auth_bsses[i]);
 119                         cfg80211_put_bss(&wdev->auth_bsses[i]->pub);
 120                         wdev->auth_bsses[i] = NULL;
 121                         done = true;
 122                         break;
 123                 }
 124                 if (wdev->authtry_bsses[i] &&
 125                     memcmp(wdev->authtry_bsses[i]->pub.bssid, bssid, ETH_ALEN) == 0) {
 126                         cfg80211_unhold_bss(wdev->authtry_bsses[i]);
 127                         cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
 128                         wdev->authtry_bsses[i] = NULL;
 129                         done = true;
 130                         break;
 131                 }
 132         }
 133
 134         WARN_ON(!done);
 135
 136         if (wdev->sme_state == CFG80211_SME_CONNECTED) {
 137                 u16 reason_code;
 138                 bool from_ap;
 139
 140                 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
 141
 142                 from_ap = memcmp(mgmt->da, dev->dev_addr, ETH_ALEN) == 0;
 143                 __cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap);
 144         } else if (wdev->sme_state == CFG80211_SME_CONNECTING) {
 145                 __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
 146                                           WLAN_STATUS_UNSPECIFIED_FAILURE,
 147                                           false);
 148         }
 149 }
 150
 151
 152 void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len,
 153                           void *cookie)
 154 {
 155         struct wireless_dev *wdev = dev->ieee80211_ptr;
 156
 157         BUG_ON(cookie && wdev != cookie);
 158
 159         if (cookie) {
 160                 /* called within callback */
 161                 __cfg80211_send_deauth(dev, buf, len);
 162         } else {
 163                 wdev_lock(wdev);
 164                 __cfg80211_send_deauth(dev, buf, len);
 165                 wdev_unlock(wdev);
 166         }
 167 }
 168 EXPORT_SYMBOL(cfg80211_send_deauth);
 169
 170 static void __cfg80211_send_disassoc(struct net_device *dev,
 171                                      const u8 *buf, size_t len)
 172 {
 173         struct wireless_dev *wdev = dev->ieee80211_ptr;
 174         struct wiphy *wiphy = wdev->wiphy;
 175         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 176         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
 177         const u8 *bssid = mgmt->bssid;
 178         int i;
 179         u16 reason_code;
 180         bool from_ap;
 181         bool done = false;
 182
 183         ASSERT_WDEV_LOCK(wdev);
 184
 185         nl80211_send_disassoc(rdev, dev, buf, len, GFP_KERNEL);
 186
 187         if (wdev->sme_state != CFG80211_SME_CONNECTED)
 188                 return;
 189
 190         if (wdev->current_bss &&
 191             memcmp(wdev->current_bss, bssid, ETH_ALEN) == 0) {
 192                 for (i = 0; i < MAX_AUTH_BSSES; i++) {
 193                         if (wdev->authtry_bsses[i] || wdev->auth_bsses[i])
 194                                 continue;
 195                         wdev->auth_bsses[i] = wdev->current_bss;
 196                         wdev->current_bss = NULL;
 197                         done = true;
 198                         cfg80211_sme_disassoc(dev, i);
 199                         break;
 200                 }
 201                 WARN_ON(!done);
 202         } else
 203                 WARN_ON(1);
 204
 205
 206         reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
 207
 208         from_ap = memcmp(mgmt->da, dev->dev_addr, ETH_ALEN) == 0;
 209         __cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap);
 210 }
 211
 212 void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len,
 213                             void *cookie)
 214 {
 215         struct wireless_dev *wdev = dev->ieee80211_ptr;
 216
 217         BUG_ON(cookie && wdev != cookie);
 218
 219         if (cookie) {
 220                 /* called within callback */
 221                 __cfg80211_send_disassoc(dev, buf, len);
 222         } else {
 223                 wdev_lock(wdev);
 224                 __cfg80211_send_disassoc(dev, buf, len);
 225                 wdev_unlock(wdev);
 226         }
 227 }
 228 EXPORT_SYMBOL(cfg80211_send_disassoc);
 229
 230 void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr)
 231 {
 232         struct wireless_dev *wdev = dev->ieee80211_ptr;
 233         struct wiphy *wiphy = wdev->wiphy;
 234         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 235         int i;
 236         bool done = false;
 237
 238         wdev_lock(wdev);
 239
 240         nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL);
 241         if (wdev->sme_state == CFG80211_SME_CONNECTING)
 242                 __cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
 243                                           WLAN_STATUS_UNSPECIFIED_FAILURE,
 244                                           false);
 245
 246         for (i = 0; addr && i < MAX_AUTH_BSSES; i++) {
 247                 if (wdev->authtry_bsses[i] &&
 248                     memcmp(wdev->authtry_bsses[i]->pub.bssid,
 249                            addr, ETH_ALEN) == 0) {
 250                         cfg80211_unhold_bss(wdev->authtry_bsses[i]);
 251                         cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
 252                         wdev->authtry_bsses[i] = NULL;
 253                         done = true;
 254                         break;
 255                 }
 256         }
 257
 258         WARN_ON(!done);
 259
 260         wdev_unlock(wdev);
 261 }
 262 EXPORT_SYMBOL(cfg80211_send_auth_timeout);
 263
 264 void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr)
 265 {
 266         struct wireless_dev *wdev = dev->ieee80211_ptr;
 267         struct wiphy *wiphy = wdev->wiphy;
 268         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 269         int i;
 270         bool done = false;
 271
 272         wdev_lock(wdev);
 273
 274         nl80211_send_assoc_timeout(rdev, dev, addr, GFP_KERNEL);
 275         if (wdev->sme_state == CFG80211_SME_CONNECTING)
 276                 __cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
 277                                           WLAN_STATUS_UNSPECIFIED_FAILURE,
 278                                           false);
 279
 280         for (i = 0; addr && i < MAX_AUTH_BSSES; i++) {
 281                 if (wdev->auth_bsses[i] &&
 282                     memcmp(wdev->auth_bsses[i]->pub.bssid,
 283                            addr, ETH_ALEN) == 0) {
 284                         cfg80211_unhold_bss(wdev->auth_bsses[i]);
 285                         cfg80211_put_bss(&wdev->auth_bsses[i]->pub);
 286                         wdev->auth_bsses[i] = NULL;
 287                         done = true;
 288                         break;
 289                 }
 290         }
 291
 292         WARN_ON(!done);
 293
 294         wdev_unlock(wdev);
 295 }
 296 EXPORT_SYMBOL(cfg80211_send_assoc_timeout);
 297
 298 void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
 299                                   enum nl80211_key_type key_type, int key_id,
 300                                   const u8 *tsc, gfp_t gfp)
 301 {
 302         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
 303         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 304 #ifdef CONFIG_WIRELESS_EXT
 305         union iwreq_data wrqu;
 306         char *buf = kmalloc(128, gfp);
 307
 308         if (buf) {
 309                 sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
 310                         "keyid=%d %scast addr=%pM)", key_id,
 311                         key_type == NL80211_KEYTYPE_GROUP ? "broad" : "uni",
 312                         addr);
 313                 memset(&wrqu, 0, sizeof(wrqu));
 314                 wrqu.data.length = strlen(buf);
 315                 wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
 316                 kfree(buf);
 317         }
 318 #endif
 319
 320         nl80211_michael_mic_failure(rdev, dev, addr, key_type, key_id, tsc, gfp);
 321 }
 322 EXPORT_SYMBOL(cfg80211_michael_mic_failure);
 323
 324 /* some MLME handling for userspace SME */
 325 int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
 326                          struct net_device *dev,
 327                          struct ieee80211_channel *chan,
 328                          enum nl80211_auth_type auth_type,
 329                          const u8 *bssid,
 330                          const u8 *ssid, int ssid_len,
 331                          const u8 *ie, int ie_len,
 332                          const u8 *key, int key_len, int key_idx)
 333 {
 334         struct wireless_dev *wdev = dev->ieee80211_ptr;
 335         struct cfg80211_auth_request req;
 336         struct cfg80211_internal_bss *bss;
 337         int i, err, slot = -1, nfree = 0;
 338
 339         ASSERT_WDEV_LOCK(wdev);
 340
 341         if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
 342                 if (!key || !key_len || key_idx < 0 || key_idx > 4)
 343                         return -EINVAL;
 344
 345         if (wdev->current_bss &&
 346             memcmp(bssid, wdev->current_bss->pub.bssid, ETH_ALEN) == 0)
 347                 return -EALREADY;
 348
 349         for (i = 0; i < MAX_AUTH_BSSES; i++) {
 350                 if (wdev->authtry_bsses[i] &&
 351                     memcmp(bssid, wdev->authtry_bsses[i]->pub.bssid,
 352                                                 ETH_ALEN) == 0)
 353                         return -EALREADY;
 354                 if (wdev->auth_bsses[i] &&
 355                     memcmp(bssid, wdev->auth_bsses[i]->pub.bssid,
 356                                                 ETH_ALEN) == 0)
 357                         return -EALREADY;
 358         }
 359
 360         memset(&req, 0, sizeof(req));
 361
 362         req.ie = ie;
 363         req.ie_len = ie_len;
 364         req.auth_type = auth_type;
 365         req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
 366                                    WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
 367         req.key = key;
 368         req.key_len = key_len;
 369         req.key_idx = key_idx;
 370         if (!req.bss)
 371                 return -ENOENT;
 372
 373         bss = bss_from_pub(req.bss);
 374
 375         for (i = 0; i < MAX_AUTH_BSSES; i++) {
 376                 if (!wdev->auth_bsses[i] && !wdev->authtry_bsses[i]) {
 377                         slot = i;
 378                         nfree++;
 379                 }
 380         }
 381
 382         /* we need one free slot for disassoc and one for this auth */
 383         if (nfree < 2) {
 384                 err = -ENOSPC;
 385                 goto out;
 386         }
 387
 388         wdev->authtry_bsses[slot] = bss;
 389         cfg80211_hold_bss(bss);
 390
 391         err = rdev->ops->auth(&rdev->wiphy, dev, &req);
 392         if (err) {
 393                 wdev->authtry_bsses[slot] = NULL;
 394                 cfg80211_unhold_bss(bss);
 395         }
 396
 397  out:
 398         if (err)
 399                 cfg80211_put_bss(req.bss);
 400         return err;
 401 }
 402
 403 int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
 404                        struct net_device *dev, struct ieee80211_channel *chan,
 405                        enum nl80211_auth_type auth_type, const u8 *bssid,
 406                        const u8 *ssid, int ssid_len,
 407                        const u8 *ie, int ie_len,
 408                        const u8 *key, int key_len, int key_idx)
 409 {
 410         int err;
 411
 412         wdev_lock(dev->ieee80211_ptr);
 413         err = __cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
 414                                    ssid, ssid_len, ie, ie_len,
 415                                    key, key_len, key_idx);
 416         wdev_unlock(dev->ieee80211_ptr);
 417
 418         return err;
 419 }
 420
 421 int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
 422                           struct net_device *dev,
 423                           struct ieee80211_channel *chan,
 424                           const u8 *bssid, const u8 *prev_bssid,
 425                           const u8 *ssid, int ssid_len,
 426                           const u8 *ie, int ie_len, bool use_mfp,
 427                           struct cfg80211_crypto_settings *crypt)
 428 {
 429         struct wireless_dev *wdev = dev->ieee80211_ptr;
 430         struct cfg80211_assoc_request req;
 431         struct cfg80211_internal_bss *bss;
 432         int i, err, slot = -1;
 433
 434         ASSERT_WDEV_LOCK(wdev);
 435
 436         memset(&req, 0, sizeof(req));
 437
 438         if (wdev->current_bss)
 439                 return -EALREADY;
 440
 441         req.ie = ie;
 442         req.ie_len = ie_len;
 443         memcpy(&req.crypto, crypt, sizeof(req.crypto));
 444         req.use_mfp = use_mfp;
 445         req.prev_bssid = prev_bssid;
 446         req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
 447                                    WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
 448         if (!req.bss)
 449                 return -ENOENT;
 450
 451         bss = bss_from_pub(req.bss);
 452
 453         for (i = 0; i < MAX_AUTH_BSSES; i++) {
 454                 if (bss == wdev->auth_bsses[i]) {
 455                         slot = i;
 456                         break;
 457                 }
 458         }
 459
 460         if (slot < 0) {
 461                 err = -ENOTCONN;
 462                 goto out;
 463         }
 464
 465         err = rdev->ops->assoc(&rdev->wiphy, dev, &req);
 466  out:
 467         /* still a reference in wdev->auth_bsses[slot] */
 468         cfg80211_put_bss(req.bss);
 469         return err;
 470 }
 471
 472 int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
 473                         struct net_device *dev,
 474                         struct ieee80211_channel *chan,
 475                         const u8 *bssid, const u8 *prev_bssid,
 476                         const u8 *ssid, int ssid_len,
 477                         const u8 *ie, int ie_len, bool use_mfp,
 478                         struct cfg80211_crypto_settings *crypt)
 479 {
 480         struct wireless_dev *wdev = dev->ieee80211_ptr;
 481         int err;
 482
 483         wdev_lock(wdev);
 484         err = __cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
 485                                     ssid, ssid_len, ie, ie_len, use_mfp, crypt);
 486         wdev_unlock(wdev);
 487
 488         return err;
 489 }
 490
 491 int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
 492                            struct net_device *dev, const u8 *bssid,
 493                            const u8 *ie, int ie_len, u16 reason)
 494 {
 495         struct wireless_dev *wdev = dev->ieee80211_ptr;
 496         struct cfg80211_deauth_request req;
 497         int i;
 498
 499         ASSERT_WDEV_LOCK(wdev);
 500
 501         memset(&req, 0, sizeof(req));
 502         req.reason_code = reason;
 503         req.ie = ie;
 504         req.ie_len = ie_len;
 505         if (wdev->current_bss &&
 506             memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) {
 507                 req.bss = &wdev->current_bss->pub;
 508         } else for (i = 0; i < MAX_AUTH_BSSES; i++) {
 509                 if (wdev->auth_bsses[i] &&
 510                     memcmp(bssid, wdev->auth_bsses[i]->pub.bssid, ETH_ALEN) == 0) {
 511                         req.bss = &wdev->auth_bsses[i]->pub;
 512                         break;
 513                 }
 514                 if (wdev->authtry_bsses[i] &&
 515                     memcmp(bssid, wdev->authtry_bsses[i]->pub.bssid, ETH_ALEN) == 0) {
 516                         req.bss = &wdev->authtry_bsses[i]->pub;
 517                         break;
 518                 }
 519         }
 520
 521         if (!req.bss)
 522                 return -ENOTCONN;
 523
 524         return rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
 525 }
 526
 527 int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
 528                          struct net_device *dev, const u8 *bssid,
 529                          const u8 *ie, int ie_len, u16 reason)
 530 {
 531         struct wireless_dev *wdev = dev->ieee80211_ptr;
 532         int err;
 533
 534         wdev_lock(wdev);
 535         err = __cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason);
 536         wdev_unlock(wdev);
 537
 538         return err;
 539 }
 540
 541 static int __cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
 542                                     struct net_device *dev, const u8 *bssid,
 543                                     const u8 *ie, int ie_len, u16 reason)
 544 {
 545         struct wireless_dev *wdev = dev->ieee80211_ptr;
 546         struct cfg80211_disassoc_request req;
 547
 548         ASSERT_WDEV_LOCK(wdev);
 549
 550         if (wdev->sme_state != CFG80211_SME_CONNECTED)
 551                 return -ENOTCONN;
 552
 553         if (WARN_ON(!wdev->current_bss))
 554                 return -ENOTCONN;
 555
 556         memset(&req, 0, sizeof(req));
 557         req.reason_code = reason;
 558         req.ie = ie;
 559         req.ie_len = ie_len;
 560         if (memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0)
 561                 req.bss = &wdev->current_bss->pub;
 562         else
 563                 return -ENOTCONN;
 564
 565         return rdev->ops->disassoc(&rdev->wiphy, dev, &req, wdev);
 566 }
 567
 568 int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
 569                            struct net_device *dev, const u8 *bssid,
 570                            const u8 *ie, int ie_len, u16 reason)
 571 {
 572         struct wireless_dev *wdev = dev->ieee80211_ptr;
 573         int err;
 574
 575         wdev_lock(wdev);
 576         err = __cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason);
 577         wdev_unlock(wdev);
 578
 579         return err;
 580 }
 581
 582 void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
 583                         struct net_device *dev)
 584 {
 585         struct wireless_dev *wdev = dev->ieee80211_ptr;
 586         struct cfg80211_deauth_request req;
 587         int i;
 588
 589         ASSERT_WDEV_LOCK(wdev);
 590
 591         if (!rdev->ops->deauth)
 592                 return;
 593
 594         memset(&req, 0, sizeof(req));
 595         req.reason_code = WLAN_REASON_DEAUTH_LEAVING;
 596         req.ie = NULL;
 597         req.ie_len = 0;
 598
 599         if (wdev->current_bss) {
 600                 req.bss = &wdev->current_bss->pub;
 601                 rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
 602                 if (wdev->current_bss) {
 603                         cfg80211_unhold_bss(wdev->current_bss);
 604                         cfg80211_put_bss(&wdev->current_bss->pub);
 605                         wdev->current_bss = NULL;
 606                 }
 607         }
 608
 609         for (i = 0; i < MAX_AUTH_BSSES; i++) {
 610                 if (wdev->auth_bsses[i]) {
 611                         req.bss = &wdev->auth_bsses[i]->pub;
 612                         rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
 613                         if (wdev->auth_bsses[i]) {
 614                                 cfg80211_unhold_bss(wdev->auth_bsses[i]);
 615                                 cfg80211_put_bss(&wdev->auth_bsses[i]->pub);
 616                                 wdev->auth_bsses[i] = NULL;
 617                         }
 618                 }
 619                 if (wdev->authtry_bsses[i]) {
 620                         req.bss = &wdev->authtry_bsses[i]->pub;
 621                         rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
 622                         if (wdev->authtry_bsses[i]) {
 623                                 cfg80211_unhold_bss(wdev->authtry_bsses[i]);
 624                                 cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
 625                                 wdev->authtry_bsses[i] = NULL;
 626                         }
 627                 }
 628         }
 629 }