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/slab.h>
  12 #include <linux/wireless.h>
  13 #include <net/cfg80211.h>
  14 #include <net/iw_handler.h>
  15 #include "core.h"
  16 #include "nl80211.h"
  17
  18 void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len)
  19 {
  20         struct wireless_dev *wdev = dev->ieee80211_ptr;
  21         struct wiphy *wiphy = wdev->wiphy;
  22         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
  23         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
  24         u8 *bssid = mgmt->bssid;
  25         int i;
  26         u16 status = le16_to_cpu(mgmt->u.auth.status_code);
  27         bool done = false;
  28
  29         wdev_lock(wdev);
  30
  31         for (i = 0; i < MAX_AUTH_BSSES; i++) {
  32                 if (wdev->authtry_bsses[i] &&
  33                     memcmp(wdev->authtry_bsses[i]->pub.bssid, bssid,
  34                                                         ETH_ALEN) == 0) {
  35                         if (status == WLAN_STATUS_SUCCESS) {
  36                                 wdev->auth_bsses[i] = wdev->authtry_bsses[i];
  37                         } else {
  38                                 cfg80211_unhold_bss(wdev->authtry_bsses[i]);
  39                                 cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
  40                         }
  41                         wdev->authtry_bsses[i] = NULL;
  42                         done = true;
  43                         break;
  44                 }
  45         }
  46
  47         if (done) {
  48                 nl80211_send_rx_auth(rdev, dev, buf, len, GFP_KERNEL);
  49                 cfg80211_sme_rx_auth(dev, buf, len);
  50         }
  51
  52         wdev_unlock(wdev);
  53 }
  54 EXPORT_SYMBOL(cfg80211_send_rx_auth);
  55
  56 void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len)
  57 {
  58         u16 status_code;
  59         struct wireless_dev *wdev = dev->ieee80211_ptr;
  60         struct wiphy *wiphy = wdev->wiphy;
  61         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
  62         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
  63         u8 *ie = mgmt->u.assoc_resp.variable;
  64         int i, ieoffs = offsetof(struct ieee80211_mgmt, u.assoc_resp.variable);
  65         struct cfg80211_internal_bss *bss = NULL;
  66
  67         wdev_lock(wdev);
  68
  69         status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
  70
  71         /*
  72          * This is a bit of a hack, we don't notify userspace of
  73          * a (re-)association reply if we tried to send a reassoc
  74          * and got a reject -- we only try again with an assoc
  75          * frame instead of reassoc.
  76          */
  77         if (status_code != WLAN_STATUS_SUCCESS && wdev->conn &&
  78             cfg80211_sme_failed_reassoc(wdev))
  79                 goto out;
  80
  81         nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL);
  82
  83         if (status_code == WLAN_STATUS_SUCCESS) {
  84                 for (i = 0; i < MAX_AUTH_BSSES; i++) {
  85                         if (!wdev->auth_bsses[i])
  86                                 continue;
  87                         if (memcmp(wdev->auth_bsses[i]->pub.bssid, mgmt->bssid,
  88                                    ETH_ALEN) == 0) {
  89                                 bss = wdev->auth_bsses[i];
  90                                 wdev->auth_bsses[i] = NULL;
  91                                 /* additional reference to drop hold */
  92                                 cfg80211_ref_bss(bss);
  93                                 break;
  94                         }
  95                 }
  96
  97                 /*
  98                  * We might be coming here because the driver reported
  99                  * a successful association at the same time as the
 100                  * user requested a deauth. In that case, we will have
 101                  * removed the BSS from the auth_bsses list due to the
 102                  * deauth request when the assoc response makes it. If
 103                  * the two code paths acquire the lock the other way
 104                  * around, that's just the standard situation of a
 105                  * deauth being requested while connected.
 106                  */
 107                 if (!bss)
 108                         goto out;
 109         } else if (wdev->conn) {
 110                 cfg80211_sme_failed_assoc(wdev);
 111                 /*
 112                  * do not call connect_result() now because the
 113                  * sme will schedule work that does it later.
 114                  */
 115                 goto out;
 116         }
 117
 118         if (!wdev->conn && wdev->sme_state == CFG80211_SME_IDLE) {
 119                 /*
 120                  * This is for the userspace SME, the CONNECTING
 121                  * state will be changed to CONNECTED by
 122                  * __cfg80211_connect_result() below.
 123                  */
 124                 wdev->sme_state = CFG80211_SME_CONNECTING;
 125         }
 126
 127         /* this consumes one bss reference (unless bss is NULL) */
 128         __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, ie, len - ieoffs,
 129                                   status_code,
 130                                   status_code == WLAN_STATUS_SUCCESS,
 131                                   bss ? &bss->pub : NULL);
 132         /* drop hold now, and also reference acquired above */
 133         if (bss) {
 134                 cfg80211_unhold_bss(bss);
 135                 cfg80211_put_bss(&bss->pub);
 136         }
 137
 138  out:
 139         wdev_unlock(wdev);
 140 }
 141 EXPORT_SYMBOL(cfg80211_send_rx_assoc);
 142
 143 void __cfg80211_send_deauth(struct net_device *dev,
 144                                    const u8 *buf, size_t len)
 145 {
 146         struct wireless_dev *wdev = dev->ieee80211_ptr;
 147         struct wiphy *wiphy = wdev->wiphy;
 148         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 149         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
 150         const u8 *bssid = mgmt->bssid;
 151         int i;
 152         bool found = false, was_current = false;
 153
 154         ASSERT_WDEV_LOCK(wdev);
 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                 found = true;
 162                 was_current = true;
 163         } else for (i = 0; i < MAX_AUTH_BSSES; i++) {
 164                 if (wdev->auth_bsses[i] &&
 165                     memcmp(wdev->auth_bsses[i]->pub.bssid, bssid, ETH_ALEN) == 0) {
 166                         cfg80211_unhold_bss(wdev->auth_bsses[i]);
 167                         cfg80211_put_bss(&wdev->auth_bsses[i]->pub);
 168                         wdev->auth_bsses[i] = NULL;
 169                         found = true;
 170                         break;
 171                 }
 172                 if (wdev->authtry_bsses[i] &&
 173                     memcmp(wdev->authtry_bsses[i]->pub.bssid, bssid,
 174                            ETH_ALEN) == 0 &&
 175                     memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) == 0) {
 176                         cfg80211_unhold_bss(wdev->authtry_bsses[i]);
 177                         cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
 178                         wdev->authtry_bsses[i] = NULL;
 179                         found = true;
 180                         break;
 181                 }
 182         }
 183
 184         if (!found)
 185                 return;
 186
 187         nl80211_send_deauth(rdev, dev, buf, len, GFP_KERNEL);
 188
 189         if (wdev->sme_state == CFG80211_SME_CONNECTED && was_current) {
 190                 u16 reason_code;
 191                 bool from_ap;
 192
 193                 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
 194
 195                 from_ap = memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) != 0;
 196                 __cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap);
 197         } else if (wdev->sme_state == CFG80211_SME_CONNECTING) {
 198                 __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
 199                                           WLAN_STATUS_UNSPECIFIED_FAILURE,
 200                                           false, NULL);
 201         }
 202 }
 203 EXPORT_SYMBOL(__cfg80211_send_deauth);
 204
 205 void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len)
 206 {
 207         struct wireless_dev *wdev = dev->ieee80211_ptr;
 208
 209         wdev_lock(wdev);
 210         __cfg80211_send_deauth(dev, buf, len);
 211         wdev_unlock(wdev);
 212 }
 213 EXPORT_SYMBOL(cfg80211_send_deauth);
 214
 215 void __cfg80211_send_disassoc(struct net_device *dev,
 216                                      const u8 *buf, size_t len)
 217 {
 218         struct wireless_dev *wdev = dev->ieee80211_ptr;
 219         struct wiphy *wiphy = wdev->wiphy;
 220         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 221         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
 222         const u8 *bssid = mgmt->bssid;
 223         int i;
 224         u16 reason_code;
 225         bool from_ap;
 226         bool done = false;
 227
 228         ASSERT_WDEV_LOCK(wdev);
 229
 230         nl80211_send_disassoc(rdev, dev, buf, len, GFP_KERNEL);
 231
 232         if (wdev->sme_state != CFG80211_SME_CONNECTED)
 233                 return;
 234
 235         if (wdev->current_bss &&
 236             memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) {
 237                 for (i = 0; i < MAX_AUTH_BSSES; i++) {
 238                         if (wdev->authtry_bsses[i] || wdev->auth_bsses[i])
 239                                 continue;
 240                         wdev->auth_bsses[i] = wdev->current_bss;
 241                         wdev->current_bss = NULL;
 242                         done = true;
 243                         cfg80211_sme_disassoc(dev, i);
 244                         break;
 245                 }
 246                 WARN_ON(!done);
 247         } else
 248                 WARN_ON(1);
 249
 250
 251         reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
 252
 253         from_ap = memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) != 0;
 254         __cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap);
 255 }
 256 EXPORT_SYMBOL(__cfg80211_send_disassoc);
 257
 258 void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len)
 259 {
 260         struct wireless_dev *wdev = dev->ieee80211_ptr;
 261
 262         wdev_lock(wdev);
 263         __cfg80211_send_disassoc(dev, buf, len);
 264         wdev_unlock(wdev);
 265 }
 266 EXPORT_SYMBOL(cfg80211_send_disassoc);
 267
 268 void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf,
 269                                  size_t len)
 270 {
 271         struct wireless_dev *wdev = dev->ieee80211_ptr;
 272         struct wiphy *wiphy = wdev->wiphy;
 273         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 274
 275         nl80211_send_unprot_deauth(rdev, dev, buf, len, GFP_ATOMIC);
 276 }
 277 EXPORT_SYMBOL(cfg80211_send_unprot_deauth);
 278
 279 void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf,
 280                                    size_t len)
 281 {
 282         struct wireless_dev *wdev = dev->ieee80211_ptr;
 283         struct wiphy *wiphy = wdev->wiphy;
 284         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 285
 286         nl80211_send_unprot_disassoc(rdev, dev, buf, len, GFP_ATOMIC);
 287 }
 288 EXPORT_SYMBOL(cfg80211_send_unprot_disassoc);
 289
 290 static void __cfg80211_auth_remove(struct wireless_dev *wdev, const u8 *addr)
 291 {
 292         int i;
 293         bool done = false;
 294
 295         ASSERT_WDEV_LOCK(wdev);
 296
 297         for (i = 0; addr && i < MAX_AUTH_BSSES; i++) {
 298                 if (wdev->authtry_bsses[i] &&
 299                     memcmp(wdev->authtry_bsses[i]->pub.bssid,
 300                            addr, ETH_ALEN) == 0) {
 301                         cfg80211_unhold_bss(wdev->authtry_bsses[i]);
 302                         cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
 303                         wdev->authtry_bsses[i] = NULL;
 304                         done = true;
 305                         break;
 306                 }
 307         }
 308
 309         WARN_ON(!done);
 310 }
 311
 312 void __cfg80211_auth_canceled(struct net_device *dev, const u8 *addr)
 313 {
 314         __cfg80211_auth_remove(dev->ieee80211_ptr, addr);
 315 }
 316 EXPORT_SYMBOL(__cfg80211_auth_canceled);
 317
 318 void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr)
 319 {
 320         struct wireless_dev *wdev = dev->ieee80211_ptr;
 321         struct wiphy *wiphy = wdev->wiphy;
 322         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 323
 324         wdev_lock(wdev);
 325
 326         nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL);
 327         if (wdev->sme_state == CFG80211_SME_CONNECTING)
 328                 __cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
 329                                           WLAN_STATUS_UNSPECIFIED_FAILURE,
 330                                           false, NULL);
 331
 332         __cfg80211_auth_remove(wdev, addr);
 333
 334         wdev_unlock(wdev);
 335 }
 336 EXPORT_SYMBOL(cfg80211_send_auth_timeout);
 337
 338 void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr)
 339 {
 340         struct wireless_dev *wdev = dev->ieee80211_ptr;
 341         struct wiphy *wiphy = wdev->wiphy;
 342         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 343         int i;
 344         bool done = false;
 345
 346         wdev_lock(wdev);
 347
 348         nl80211_send_assoc_timeout(rdev, dev, addr, GFP_KERNEL);
 349         if (wdev->sme_state == CFG80211_SME_CONNECTING)
 350                 __cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
 351                                           WLAN_STATUS_UNSPECIFIED_FAILURE,
 352                                           false, NULL);
 353
 354         for (i = 0; addr && i < MAX_AUTH_BSSES; i++) {
 355                 if (wdev->auth_bsses[i] &&
 356                     memcmp(wdev->auth_bsses[i]->pub.bssid,
 357                            addr, ETH_ALEN) == 0) {
 358                         cfg80211_unhold_bss(wdev->auth_bsses[i]);
 359                         cfg80211_put_bss(&wdev->auth_bsses[i]->pub);
 360                         wdev->auth_bsses[i] = NULL;
 361                         done = true;
 362                         break;
 363                 }
 364         }
 365
 366         WARN_ON(!done);
 367
 368         wdev_unlock(wdev);
 369 }
 370 EXPORT_SYMBOL(cfg80211_send_assoc_timeout);
 371
 372 void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
 373                                   enum nl80211_key_type key_type, int key_id,
 374                                   const u8 *tsc, gfp_t gfp)
 375 {
 376         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
 377         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 378 #ifdef CONFIG_CFG80211_WEXT
 379         union iwreq_data wrqu;
 380         char *buf = kmalloc(128, gfp);
 381
 382         if (buf) {
 383                 sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
 384                         "keyid=%d %scast addr=%pM)", key_id,
 385                         key_type == NL80211_KEYTYPE_GROUP ? "broad" : "uni",
 386                         addr);
 387                 memset(&wrqu, 0, sizeof(wrqu));
 388                 wrqu.data.length = strlen(buf);
 389                 wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
 390                 kfree(buf);
 391         }
 392 #endif
 393
 394         nl80211_michael_mic_failure(rdev, dev, addr, key_type, key_id, tsc, gfp);
 395 }
 396 EXPORT_SYMBOL(cfg80211_michael_mic_failure);
 397
 398 /* some MLME handling for userspace SME */
 399 int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
 400                          struct net_device *dev,
 401                          struct ieee80211_channel *chan,
 402                          enum nl80211_auth_type auth_type,
 403                          const u8 *bssid,
 404                          const u8 *ssid, int ssid_len,
 405                          const u8 *ie, int ie_len,
 406                          const u8 *key, int key_len, int key_idx,
 407                          bool local_state_change)
 408 {
 409         struct wireless_dev *wdev = dev->ieee80211_ptr;
 410         struct cfg80211_auth_request req;
 411         struct cfg80211_internal_bss *bss;
 412         int i, err, slot = -1, nfree = 0;
 413
 414         ASSERT_WDEV_LOCK(wdev);
 415
 416         if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
 417                 if (!key || !key_len || key_idx < 0 || key_idx > 4)
 418                         return -EINVAL;
 419
 420         if (wdev->current_bss &&
 421             memcmp(bssid, wdev->current_bss->pub.bssid, ETH_ALEN) == 0)
 422                 return -EALREADY;
 423
 424         for (i = 0; i < MAX_AUTH_BSSES; i++) {
 425                 if (wdev->authtry_bsses[i] &&
 426                     memcmp(bssid, wdev->authtry_bsses[i]->pub.bssid,
 427                                                 ETH_ALEN) == 0)
 428                         return -EALREADY;
 429                 if (wdev->auth_bsses[i] &&
 430                     memcmp(bssid, wdev->auth_bsses[i]->pub.bssid,
 431                                                 ETH_ALEN) == 0)
 432                         return -EALREADY;
 433         }
 434
 435         memset(&req, 0, sizeof(req));
 436
 437         req.local_state_change = local_state_change;
 438         req.ie = ie;
 439         req.ie_len = ie_len;
 440         req.auth_type = auth_type;
 441         req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
 442                                    WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
 443         req.key = key;
 444         req.key_len = key_len;
 445         req.key_idx = key_idx;
 446         if (!req.bss)
 447                 return -ENOENT;
 448
 449         bss = bss_from_pub(req.bss);
 450
 451         for (i = 0; i < MAX_AUTH_BSSES; i++) {
 452                 if (!wdev->auth_bsses[i] && !wdev->authtry_bsses[i]) {
 453                         slot = i;
 454                         nfree++;
 455                 }
 456         }
 457
 458         /* we need one free slot for disassoc and one for this auth */
 459         if (nfree < 2) {
 460                 err = -ENOSPC;
 461                 goto out;
 462         }
 463
 464         if (local_state_change)
 465                 wdev->auth_bsses[slot] = bss;
 466         else
 467                 wdev->authtry_bsses[slot] = bss;
 468         cfg80211_hold_bss(bss);
 469
 470         err = rdev->ops->auth(&rdev->wiphy, dev, &req);
 471         if (err) {
 472                 if (local_state_change)
 473                         wdev->auth_bsses[slot] = NULL;
 474                 else
 475                         wdev->authtry_bsses[slot] = NULL;
 476                 cfg80211_unhold_bss(bss);
 477         }
 478
 479  out:
 480         if (err)
 481                 cfg80211_put_bss(req.bss);
 482         return err;
 483 }
 484
 485 int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
 486                        struct net_device *dev, struct ieee80211_channel *chan,
 487                        enum nl80211_auth_type auth_type, const u8 *bssid,
 488                        const u8 *ssid, int ssid_len,
 489                        const u8 *ie, int ie_len,
 490                        const u8 *key, int key_len, int key_idx,
 491                        bool local_state_change)
 492 {
 493         int err;
 494
 495         wdev_lock(dev->ieee80211_ptr);
 496         err = __cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
 497                                    ssid, ssid_len, ie, ie_len,
 498                                    key, key_len, key_idx, local_state_change);
 499         wdev_unlock(dev->ieee80211_ptr);
 500
 501         return err;
 502 }
 503
 504 /*  Do a logical ht_capa &= ht_capa_mask.  */
 505 void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
 506                                const struct ieee80211_ht_cap *ht_capa_mask)
 507 {
 508         int i;
 509         u8 *p1, *p2;
 510         if (!ht_capa_mask) {
 511                 memset(ht_capa, 0, sizeof(*ht_capa));
 512                 return;
 513         }
 514
 515         p1 = (u8*)(ht_capa);
 516         p2 = (u8*)(ht_capa_mask);
 517         for (i = 0; i<sizeof(*ht_capa); i++)
 518                 p1[i] &= p2[i];
 519 }
 520
 521 int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
 522                           struct net_device *dev,
 523                           struct ieee80211_channel *chan,
 524                           const u8 *bssid, const u8 *prev_bssid,
 525                           const u8 *ssid, int ssid_len,
 526                           const u8 *ie, int ie_len, bool use_mfp,
 527                           struct cfg80211_crypto_settings *crypt,
 528                           u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,
 529                           struct ieee80211_ht_cap *ht_capa_mask)
 530 {
 531         struct wireless_dev *wdev = dev->ieee80211_ptr;
 532         struct cfg80211_assoc_request req;
 533         struct cfg80211_internal_bss *bss;
 534         int i, err, slot = -1;
 535         bool was_connected = false;
 536
 537         ASSERT_WDEV_LOCK(wdev);
 538
 539         memset(&req, 0, sizeof(req));
 540
 541         if (wdev->current_bss && prev_bssid &&
 542             memcmp(wdev->current_bss->pub.bssid, prev_bssid, ETH_ALEN) == 0) {
 543                 /*
 544                  * Trying to reassociate: Allow this to proceed and let the old
 545                  * association to be dropped when the new one is completed.
 546                  */
 547                 if (wdev->sme_state == CFG80211_SME_CONNECTED) {
 548                         was_connected = true;
 549                         wdev->sme_state = CFG80211_SME_CONNECTING;
 550                 }
 551         } else if (wdev->current_bss)
 552                 return -EALREADY;
 553
 554         req.ie = ie;
 555         req.ie_len = ie_len;
 556         memcpy(&req.crypto, crypt, sizeof(req.crypto));
 557         req.use_mfp = use_mfp;
 558         req.prev_bssid = prev_bssid;
 559         req.flags = assoc_flags;
 560         if (ht_capa)
 561                 memcpy(&req.ht_capa, ht_capa, sizeof(req.ht_capa));
 562         if (ht_capa_mask)
 563                 memcpy(&req.ht_capa_mask, ht_capa_mask,
 564                        sizeof(req.ht_capa_mask));
 565         cfg80211_oper_and_ht_capa(&req.ht_capa_mask,
 566                                   rdev->wiphy.ht_capa_mod_mask);
 567
 568         req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
 569                                    WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
 570         if (!req.bss) {
 571                 if (was_connected)
 572                         wdev->sme_state = CFG80211_SME_CONNECTED;
 573                 return -ENOENT;
 574         }
 575
 576         bss = bss_from_pub(req.bss);
 577
 578         for (i = 0; i < MAX_AUTH_BSSES; i++) {
 579                 if (bss == wdev->auth_bsses[i]) {
 580                         slot = i;
 581                         break;
 582                 }
 583         }
 584
 585         if (slot < 0) {
 586                 err = -ENOTCONN;
 587                 goto out;
 588         }
 589
 590         err = rdev->ops->assoc(&rdev->wiphy, dev, &req);
 591  out:
 592         if (err && was_connected)
 593                 wdev->sme_state = CFG80211_SME_CONNECTED;
 594         /* still a reference in wdev->auth_bsses[slot] */
 595         cfg80211_put_bss(req.bss);
 596         return err;
 597 }
 598
 599 int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
 600                         struct net_device *dev,
 601                         struct ieee80211_channel *chan,
 602                         const u8 *bssid, const u8 *prev_bssid,
 603                         const u8 *ssid, int ssid_len,
 604                         const u8 *ie, int ie_len, bool use_mfp,
 605                         struct cfg80211_crypto_settings *crypt,
 606                         u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,
 607                         struct ieee80211_ht_cap *ht_capa_mask)
 608 {
 609         struct wireless_dev *wdev = dev->ieee80211_ptr;
 610         int err;
 611
 612         wdev_lock(wdev);
 613         err = __cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
 614                                     ssid, ssid_len, ie, ie_len, use_mfp, crypt,
 615                                     assoc_flags, ht_capa, ht_capa_mask);
 616         wdev_unlock(wdev);
 617
 618         return err;
 619 }
 620
 621 int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
 622                            struct net_device *dev, const u8 *bssid,
 623                            const u8 *ie, int ie_len, u16 reason,
 624                            bool local_state_change)
 625 {
 626         struct wireless_dev *wdev = dev->ieee80211_ptr;
 627         struct cfg80211_deauth_request req;
 628         int i;
 629
 630         ASSERT_WDEV_LOCK(wdev);
 631
 632         memset(&req, 0, sizeof(req));
 633         req.reason_code = reason;
 634         req.local_state_change = local_state_change;
 635         req.ie = ie;
 636         req.ie_len = ie_len;
 637         if (wdev->current_bss &&
 638             memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0) {
 639                 req.bss = &wdev->current_bss->pub;
 640         } else for (i = 0; i < MAX_AUTH_BSSES; i++) {
 641                 if (wdev->auth_bsses[i] &&
 642                     memcmp(bssid, wdev->auth_bsses[i]->pub.bssid, ETH_ALEN) == 0) {
 643                         req.bss = &wdev->auth_bsses[i]->pub;
 644                         break;
 645                 }
 646                 if (wdev->authtry_bsses[i] &&
 647                     memcmp(bssid, wdev->authtry_bsses[i]->pub.bssid, ETH_ALEN) == 0) {
 648                         req.bss = &wdev->authtry_bsses[i]->pub;
 649                         break;
 650                 }
 651         }
 652
 653         if (!req.bss)
 654                 return -ENOTCONN;
 655
 656         return rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
 657 }
 658
 659 int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
 660                          struct net_device *dev, const u8 *bssid,
 661                          const u8 *ie, int ie_len, u16 reason,
 662                          bool local_state_change)
 663 {
 664         struct wireless_dev *wdev = dev->ieee80211_ptr;
 665         int err;
 666
 667         wdev_lock(wdev);
 668         err = __cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason,
 669                                      local_state_change);
 670         wdev_unlock(wdev);
 671
 672         return err;
 673 }
 674
 675 static int __cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
 676                                     struct net_device *dev, const u8 *bssid,
 677                                     const u8 *ie, int ie_len, u16 reason,
 678                                     bool local_state_change)
 679 {
 680         struct wireless_dev *wdev = dev->ieee80211_ptr;
 681         struct cfg80211_disassoc_request req;
 682
 683         ASSERT_WDEV_LOCK(wdev);
 684
 685         if (wdev->sme_state != CFG80211_SME_CONNECTED)
 686                 return -ENOTCONN;
 687
 688         if (WARN_ON(!wdev->current_bss))
 689                 return -ENOTCONN;
 690
 691         memset(&req, 0, sizeof(req));
 692         req.reason_code = reason;
 693         req.local_state_change = local_state_change;
 694         req.ie = ie;
 695         req.ie_len = ie_len;
 696         if (memcmp(wdev->current_bss->pub.bssid, bssid, ETH_ALEN) == 0)
 697                 req.bss = &wdev->current_bss->pub;
 698         else
 699                 return -ENOTCONN;
 700
 701         return rdev->ops->disassoc(&rdev->wiphy, dev, &req, wdev);
 702 }
 703
 704 int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
 705                            struct net_device *dev, const u8 *bssid,
 706                            const u8 *ie, int ie_len, u16 reason,
 707                            bool local_state_change)
 708 {
 709         struct wireless_dev *wdev = dev->ieee80211_ptr;
 710         int err;
 711
 712         wdev_lock(wdev);
 713         err = __cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason,
 714                                        local_state_change);
 715         wdev_unlock(wdev);
 716
 717         return err;
 718 }
 719
 720 void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
 721                         struct net_device *dev)
 722 {
 723         struct wireless_dev *wdev = dev->ieee80211_ptr;
 724         struct cfg80211_deauth_request req;
 725         int i;
 726
 727         ASSERT_WDEV_LOCK(wdev);
 728
 729         if (!rdev->ops->deauth)
 730                 return;
 731
 732         memset(&req, 0, sizeof(req));
 733         req.reason_code = WLAN_REASON_DEAUTH_LEAVING;
 734         req.ie = NULL;
 735         req.ie_len = 0;
 736
 737         if (wdev->current_bss) {
 738                 req.bss = &wdev->current_bss->pub;
 739                 rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
 740                 if (wdev->current_bss) {
 741                         cfg80211_unhold_bss(wdev->current_bss);
 742                         cfg80211_put_bss(&wdev->current_bss->pub);
 743                         wdev->current_bss = NULL;
 744                 }
 745         }
 746
 747         for (i = 0; i < MAX_AUTH_BSSES; i++) {
 748                 if (wdev->auth_bsses[i]) {
 749                         req.bss = &wdev->auth_bsses[i]->pub;
 750                         rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
 751                         if (wdev->auth_bsses[i]) {
 752                                 cfg80211_unhold_bss(wdev->auth_bsses[i]);
 753                                 cfg80211_put_bss(&wdev->auth_bsses[i]->pub);
 754                                 wdev->auth_bsses[i] = NULL;
 755                         }
 756                 }
 757                 if (wdev->authtry_bsses[i]) {
 758                         req.bss = &wdev->authtry_bsses[i]->pub;
 759                         rdev->ops->deauth(&rdev->wiphy, dev, &req, wdev);
 760                         if (wdev->authtry_bsses[i]) {
 761                                 cfg80211_unhold_bss(wdev->authtry_bsses[i]);
 762                                 cfg80211_put_bss(&wdev->authtry_bsses[i]->pub);
 763                                 wdev->authtry_bsses[i] = NULL;
 764                         }
 765                 }
 766         }
 767 }
 768
 769 void cfg80211_ready_on_channel(struct net_device *dev, u64 cookie,
 770                                struct ieee80211_channel *chan,
 771                                enum nl80211_channel_type channel_type,
 772                                unsigned int duration, gfp_t gfp)
 773 {
 774         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
 775         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 776
 777         nl80211_send_remain_on_channel(rdev, dev, cookie, chan, channel_type,
 778                                        duration, gfp);
 779 }
 780 EXPORT_SYMBOL(cfg80211_ready_on_channel);
 781
 782 void cfg80211_remain_on_channel_expired(struct net_device *dev,
 783                                         u64 cookie,
 784                                         struct ieee80211_channel *chan,
 785                                         enum nl80211_channel_type channel_type,
 786                                         gfp_t gfp)
 787 {
 788         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
 789         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 790
 791         nl80211_send_remain_on_channel_cancel(rdev, dev, cookie, chan,
 792                                               channel_type, gfp);
 793 }
 794 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
 795
 796 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
 797                       struct station_info *sinfo, gfp_t gfp)
 798 {
 799         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
 800         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 801
 802         nl80211_send_sta_event(rdev, dev, mac_addr, sinfo, gfp);
 803 }
 804 EXPORT_SYMBOL(cfg80211_new_sta);
 805
 806 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
 807 {
 808         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
 809         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 810
 811         nl80211_send_sta_del_event(rdev, dev, mac_addr, gfp);
 812 }
 813 EXPORT_SYMBOL(cfg80211_del_sta);
 814
 815 struct cfg80211_mgmt_registration {
 816         struct list_head list;
 817
 818         u32 nlpid;
 819
 820         int match_len;
 821
 822         __le16 frame_type;
 823
 824         u8 match[];
 825 };
 826
 827 int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
 828                                 u16 frame_type, const u8 *match_data,
 829                                 int match_len)
 830 {
 831         struct wiphy *wiphy = wdev->wiphy;
 832         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 833         struct cfg80211_mgmt_registration *reg, *nreg;
 834         int err = 0;
 835         u16 mgmt_type;
 836
 837         if (!wdev->wiphy->mgmt_stypes)
 838                 return -EOPNOTSUPP;
 839
 840         if ((frame_type & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT)
 841                 return -EINVAL;
 842
 843         if (frame_type & ~(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE))
 844                 return -EINVAL;
 845
 846         mgmt_type = (frame_type & IEEE80211_FCTL_STYPE) >> 4;
 847         if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].rx & BIT(mgmt_type)))
 848                 return -EINVAL;
 849
 850         nreg = kzalloc(sizeof(*reg) + match_len, GFP_KERNEL);
 851         if (!nreg)
 852                 return -ENOMEM;
 853
 854         spin_lock_bh(&wdev->mgmt_registrations_lock);
 855
 856         list_for_each_entry(reg, &wdev->mgmt_registrations, list) {
 857                 int mlen = min(match_len, reg->match_len);
 858
 859                 if (frame_type != le16_to_cpu(reg->frame_type))
 860                         continue;
 861
 862                 if (memcmp(reg->match, match_data, mlen) == 0) {
 863                         err = -EALREADY;
 864                         break;
 865                 }
 866         }
 867
 868         if (err) {
 869                 kfree(nreg);
 870                 goto out;
 871         }
 872
 873         memcpy(nreg->match, match_data, match_len);
 874         nreg->match_len = match_len;
 875         nreg->nlpid = snd_pid;
 876         nreg->frame_type = cpu_to_le16(frame_type);
 877         list_add(&nreg->list, &wdev->mgmt_registrations);
 878
 879         if (rdev->ops->mgmt_frame_register)
 880                 rdev->ops->mgmt_frame_register(wiphy, wdev->netdev,
 881                                                frame_type, true);
 882
 883  out:
 884         spin_unlock_bh(&wdev->mgmt_registrations_lock);
 885
 886         return err;
 887 }
 888
 889 void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid)
 890 {
 891         struct wiphy *wiphy = wdev->wiphy;
 892         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 893         struct cfg80211_mgmt_registration *reg, *tmp;
 894
 895         spin_lock_bh(&wdev->mgmt_registrations_lock);
 896
 897         list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) {
 898                 if (reg->nlpid != nlpid)
 899                         continue;
 900
 901                 if (rdev->ops->mgmt_frame_register) {
 902                         u16 frame_type = le16_to_cpu(reg->frame_type);
 903
 904                         rdev->ops->mgmt_frame_register(wiphy, wdev->netdev,
 905                                                        frame_type, false);
 906                 }
 907
 908                 list_del(&reg->list);
 909                 kfree(reg);
 910         }
 911
 912         spin_unlock_bh(&wdev->mgmt_registrations_lock);
 913
 914         if (nlpid == wdev->ap_unexpected_nlpid)
 915                 wdev->ap_unexpected_nlpid = 0;
 916 }
 917
 918 void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev)
 919 {
 920         struct cfg80211_mgmt_registration *reg, *tmp;
 921
 922         spin_lock_bh(&wdev->mgmt_registrations_lock);
 923
 924         list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) {
 925                 list_del(&reg->list);
 926                 kfree(reg);
 927         }
 928
 929         spin_unlock_bh(&wdev->mgmt_registrations_lock);
 930 }
 931
 932 int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
 933                           struct net_device *dev,
 934                           struct ieee80211_channel *chan, bool offchan,
 935                           enum nl80211_channel_type channel_type,
 936                           bool channel_type_valid, unsigned int wait,
 937                           const u8 *buf, size_t len, bool no_cck,
 938                           bool dont_wait_for_ack, u64 *cookie)
 939 {
 940         struct wireless_dev *wdev = dev->ieee80211_ptr;
 941         const struct ieee80211_mgmt *mgmt;
 942         u16 stype;
 943
 944         if (!wdev->wiphy->mgmt_stypes)
 945                 return -EOPNOTSUPP;
 946
 947         if (!rdev->ops->mgmt_tx)
 948                 return -EOPNOTSUPP;
 949
 950         if (len < 24 + 1)
 951                 return -EINVAL;
 952
 953         mgmt = (const struct ieee80211_mgmt *) buf;
 954
 955         if (!ieee80211_is_mgmt(mgmt->frame_control))
 956                 return -EINVAL;
 957
 958         stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE;
 959         if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].tx & BIT(stype >> 4)))
 960                 return -EINVAL;
 961
 962         if (ieee80211_is_action(mgmt->frame_control) &&
 963             mgmt->u.action.category != WLAN_CATEGORY_PUBLIC) {
 964                 int err = 0;
 965
 966                 wdev_lock(wdev);
 967
 968                 switch (wdev->iftype) {
 969                 case NL80211_IFTYPE_ADHOC:
 970                 case NL80211_IFTYPE_STATION:
 971                 case NL80211_IFTYPE_P2P_CLIENT:
 972                         if (!wdev->current_bss) {
 973                                 err = -ENOTCONN;
 974                                 break;
 975                         }
 976
 977                         if (memcmp(wdev->current_bss->pub.bssid,
 978                                    mgmt->bssid, ETH_ALEN)) {
 979                                 err = -ENOTCONN;
 980                                 break;
 981                         }
 982
 983                         /*
 984                          * check for IBSS DA must be done by driver as
 985                          * cfg80211 doesn't track the stations
 986                          */
 987                         if (wdev->iftype == NL80211_IFTYPE_ADHOC)
 988                                 break;
 989
 990                         /* for station, check that DA is the AP */
 991                         if (memcmp(wdev->current_bss->pub.bssid,
 992                                    mgmt->da, ETH_ALEN)) {
 993                                 err = -ENOTCONN;
 994                                 break;
 995                         }
 996                         break;
 997                 case NL80211_IFTYPE_AP:
 998                 case NL80211_IFTYPE_P2P_GO:
 999                 case NL80211_IFTYPE_AP_VLAN:
1000                         if (memcmp(mgmt->bssid, dev->dev_addr, ETH_ALEN))
1001                                 err = -EINVAL;
1002                         break;
1003                 case NL80211_IFTYPE_MESH_POINT:
1004                         if (memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN)) {
1005                                 err = -EINVAL;
1006                                 break;
1007                         }
1008                         /*
1009                          * check for mesh DA must be done by driver as
1010                          * cfg80211 doesn't track the stations
1011                          */
1012                         break;
1013                 default:
1014                         err = -EOPNOTSUPP;
1015                         break;
1016                 }
1017                 wdev_unlock(wdev);
1018
1019                 if (err)
1020                         return err;
1021         }
1022
1023         if (memcmp(mgmt->sa, dev->dev_addr, ETH_ALEN) != 0)
1024                 return -EINVAL;
1025
1026         /* Transmit the Action frame as requested by user space */
1027         return rdev->ops->mgmt_tx(&rdev->wiphy, dev, chan, offchan,
1028                                   channel_type, channel_type_valid,
1029                                   wait, buf, len, no_cck, dont_wait_for_ack,
1030                                   cookie);
1031 }
1032
1033 bool cfg80211_rx_mgmt(struct net_device *dev, int freq, const u8 *buf,
1034                       size_t len, gfp_t gfp)
1035 {
1036         struct wireless_dev *wdev = dev->ieee80211_ptr;
1037         struct wiphy *wiphy = wdev->wiphy;
1038         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
1039         struct cfg80211_mgmt_registration *reg;
1040         const struct ieee80211_txrx_stypes *stypes =
1041                 &wiphy->mgmt_stypes[wdev->iftype];
1042         struct ieee80211_mgmt *mgmt = (void *)buf;
1043         const u8 *data;
1044         int data_len;
1045         bool result = false;
1046         __le16 ftype = mgmt->frame_control &
1047                 cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE);
1048         u16 stype;
1049
1050         stype = (le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE) >> 4;
1051
1052         if (!(stypes->rx & BIT(stype)))
1053                 return false;
1054
1055         data = buf + ieee80211_hdrlen(mgmt->frame_control);
1056         data_len = len - ieee80211_hdrlen(mgmt->frame_control);
1057
1058         spin_lock_bh(&wdev->mgmt_registrations_lock);
1059
1060         list_for_each_entry(reg, &wdev->mgmt_registrations, list) {
1061                 if (reg->frame_type != ftype)
1062                         continue;
1063
1064                 if (reg->match_len > data_len)
1065                         continue;
1066
1067                 if (memcmp(reg->match, data, reg->match_len))
1068                         continue;
1069
1070                 /* found match! */
1071
1072                 /* Indicate the received Action frame to user space */
1073                 if (nl80211_send_mgmt(rdev, dev, reg->nlpid, freq,
1074                                       buf, len, gfp))
1075                         continue;
1076
1077                 result = true;
1078                 break;
1079         }
1080
1081         spin_unlock_bh(&wdev->mgmt_registrations_lock);
1082
1083         return result;
1084 }
1085 EXPORT_SYMBOL(cfg80211_rx_mgmt);
1086
1087 void cfg80211_mgmt_tx_status(struct net_device *dev, u64 cookie,
1088                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
1089 {
1090         struct wireless_dev *wdev = dev->ieee80211_ptr;
1091         struct wiphy *wiphy = wdev->wiphy;
1092         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
1093
1094         /* Indicate TX status of the Action frame to user space */
1095         nl80211_send_mgmt_tx_status(rdev, dev, cookie, buf, len, ack, gfp);
1096 }
1097 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
1098
1099 void cfg80211_cqm_rssi_notify(struct net_device *dev,
1100                               enum nl80211_cqm_rssi_threshold_event rssi_event,
1101                               gfp_t gfp)
1102 {
1103         struct wireless_dev *wdev = dev->ieee80211_ptr;
1104         struct wiphy *wiphy = wdev->wiphy;
1105         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
1106
1107         /* Indicate roaming trigger event to user space */
1108         nl80211_send_cqm_rssi_notify(rdev, dev, rssi_event, gfp);
1109 }
1110 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
1111
1112 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
1113                                  const u8 *peer, u32 num_packets, gfp_t gfp)
1114 {
1115         struct wireless_dev *wdev = dev->ieee80211_ptr;
1116         struct wiphy *wiphy = wdev->wiphy;
1117         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
1118
1119         /* Indicate roaming trigger event to user space */
1120         nl80211_send_cqm_pktloss_notify(rdev, dev, peer, num_packets, gfp);
1121 }
1122 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
1123
1124 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
1125                                const u8 *replay_ctr, gfp_t gfp)
1126 {
1127         struct wireless_dev *wdev = dev->ieee80211_ptr;
1128         struct wiphy *wiphy = wdev->wiphy;
1129         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
1130
1131         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
1132 }
1133 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
1134
1135 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
1136                                      const u8 *bssid, bool preauth, gfp_t gfp)
1137 {
1138         struct wireless_dev *wdev = dev->ieee80211_ptr;
1139         struct wiphy *wiphy = wdev->wiphy;
1140         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
1141
1142         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
1143 }
1144 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
1145
1146 bool cfg80211_rx_spurious_frame(struct net_device *dev,
1147                                 const u8 *addr, gfp_t gfp)
1148 {
1149         struct wireless_dev *wdev = dev->ieee80211_ptr;
1150
1151         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
1152                     wdev->iftype != NL80211_IFTYPE_P2P_GO))
1153                 return false;
1154
1155         return nl80211_unexpected_frame(dev, addr, gfp);
1156 }
1157 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
1158
1159 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
1160                                         const u8 *addr, gfp_t gfp)
1161 {
1162         struct wireless_dev *wdev = dev->ieee80211_ptr;
1163
1164         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
1165                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
1166                     wdev->iftype != NL80211_IFTYPE_AP_VLAN))
1167                 return false;
1168
1169         return nl80211_unexpected_4addr_frame(dev, addr, gfp);
1170 }
1171 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);