net/wireless/mlme.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * cfg80211 MLME SAP interface
   4  *
   5  * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
   6  * Copyright (c) 2015           Intel Deutschland GmbH
   7  * Copyright (C) 2019-2020, 2022 Intel Corporation
   8  */
   9
  10 #include <linux/kernel.h>
  11 #include <linux/module.h>
  12 #include <linux/etherdevice.h>
  13 #include <linux/netdevice.h>
  14 #include <linux/nl80211.h>
  15 #include <linux/slab.h>
  16 #include <linux/wireless.h>
  17 #include <net/cfg80211.h>
  18 #include <net/iw_handler.h>
  19 #include "core.h"
  20 #include "nl80211.h"
  21 #include "rdev-ops.h"
  22
  23
  24 void cfg80211_rx_assoc_resp(struct net_device *dev,
  25                             struct cfg80211_rx_assoc_resp *data)
  26 {
  27         struct wireless_dev *wdev = dev->ieee80211_ptr;
  28         struct wiphy *wiphy = wdev->wiphy;
  29         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
  30         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)data->buf;
  31         struct cfg80211_connect_resp_params cr = {
  32                 .timeout_reason = NL80211_TIMEOUT_UNSPECIFIED,
  33                 .req_ie = data->req_ies,
  34                 .req_ie_len = data->req_ies_len,
  35                 .resp_ie = mgmt->u.assoc_resp.variable,
  36                 .resp_ie_len = data->len -
  37                                offsetof(struct ieee80211_mgmt,
  38                                         u.assoc_resp.variable),
  39                 .status = le16_to_cpu(mgmt->u.assoc_resp.status_code),
  40                 .ap_mld_addr = data->ap_mld_addr,
  41         };
  42         unsigned int link_id;
  43
  44         for (link_id = 0; link_id < ARRAY_SIZE(data->links); link_id++) {
  45                 cr.links[link_id].status = data->links[link_id].status;
  46                 WARN_ON_ONCE(cr.links[link_id].status != WLAN_STATUS_SUCCESS &&
  47                              (!cr.ap_mld_addr || !cr.links[link_id].bss));
  48
  49                 cr.links[link_id].bss = data->links[link_id].bss;
  50                 if (!cr.links[link_id].bss)
  51                         continue;
  52                 cr.links[link_id].bssid = data->links[link_id].bss->bssid;
  53                 cr.links[link_id].addr = data->links[link_id].addr;
  54                 /* need to have local link addresses for MLO connections */
  55                 WARN_ON(cr.ap_mld_addr &&
  56                         !is_valid_ether_addr(cr.links[link_id].addr));
  57
  58                 BUG_ON(!cr.links[link_id].bss->channel);
  59
  60                 if (cr.links[link_id].bss->channel->band == NL80211_BAND_S1GHZ) {
  61                         WARN_ON(link_id);
  62                         cr.resp_ie = (u8 *)&mgmt->u.s1g_assoc_resp.variable;
  63                         cr.resp_ie_len = data->len -
  64                                          offsetof(struct ieee80211_mgmt,
  65                                                   u.s1g_assoc_resp.variable);
  66                 }
  67
  68                 if (cr.ap_mld_addr)
  69                         cr.valid_links |= BIT(link_id);
  70         }
  71
  72         trace_cfg80211_send_rx_assoc(dev, data);
  73
  74         /*
  75          * This is a bit of a hack, we don't notify userspace of
  76          * a (re-)association reply if we tried to send a reassoc
  77          * and got a reject -- we only try again with an assoc
  78          * frame instead of reassoc.
  79          */
  80         if (cfg80211_sme_rx_assoc_resp(wdev, cr.status)) {
  81                 for (link_id = 0; link_id < ARRAY_SIZE(data->links); link_id++) {
  82                         struct cfg80211_bss *bss = data->links[link_id].bss;
  83
  84                         if (!bss)
  85                                 continue;
  86
  87                         cfg80211_unhold_bss(bss_from_pub(bss));
  88                         cfg80211_put_bss(wiphy, bss);
  89                 }
  90                 return;
  91         }
  92
  93         nl80211_send_rx_assoc(rdev, dev, data);
  94         /* update current_bss etc., consumes the bss reference */
  95         __cfg80211_connect_result(dev, &cr, cr.status == WLAN_STATUS_SUCCESS);
  96 }
  97 EXPORT_SYMBOL(cfg80211_rx_assoc_resp);
  98
  99 static void cfg80211_process_auth(struct wireless_dev *wdev,
 100                                   const u8 *buf, size_t len)
 101 {
 102         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 103
 104         nl80211_send_rx_auth(rdev, wdev->netdev, buf, len, GFP_KERNEL);
 105         cfg80211_sme_rx_auth(wdev, buf, len);
 106 }
 107
 108 static void cfg80211_process_deauth(struct wireless_dev *wdev,
 109                                     const u8 *buf, size_t len,
 110                                     bool reconnect)
 111 {
 112         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 113         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
 114         const u8 *bssid = mgmt->bssid;
 115         u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
 116         bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr);
 117
 118         nl80211_send_deauth(rdev, wdev->netdev, buf, len, reconnect, GFP_KERNEL);
 119
 120         if (!wdev->connected || !ether_addr_equal(wdev->u.client.connected_addr, bssid))
 121                 return;
 122
 123         __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap);
 124         cfg80211_sme_deauth(wdev);
 125 }
 126
 127 static void cfg80211_process_disassoc(struct wireless_dev *wdev,
 128                                       const u8 *buf, size_t len,
 129                                       bool reconnect)
 130 {
 131         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 132         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
 133         const u8 *bssid = mgmt->bssid;
 134         u16 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
 135         bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr);
 136
 137         nl80211_send_disassoc(rdev, wdev->netdev, buf, len, reconnect,
 138                               GFP_KERNEL);
 139
 140         if (WARN_ON(!wdev->connected ||
 141                     !ether_addr_equal(wdev->u.client.connected_addr, bssid)))
 142                 return;
 143
 144         __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap);
 145         cfg80211_sme_disassoc(wdev);
 146 }
 147
 148 void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len)
 149 {
 150         struct wireless_dev *wdev = dev->ieee80211_ptr;
 151         struct ieee80211_mgmt *mgmt = (void *)buf;
 152
 153         ASSERT_WDEV_LOCK(wdev);
 154
 155         trace_cfg80211_rx_mlme_mgmt(dev, buf, len);
 156
 157         if (WARN_ON(len < 2))
 158                 return;
 159
 160         if (ieee80211_is_auth(mgmt->frame_control))
 161                 cfg80211_process_auth(wdev, buf, len);
 162         else if (ieee80211_is_deauth(mgmt->frame_control))
 163                 cfg80211_process_deauth(wdev, buf, len, false);
 164         else if (ieee80211_is_disassoc(mgmt->frame_control))
 165                 cfg80211_process_disassoc(wdev, buf, len, false);
 166 }
 167 EXPORT_SYMBOL(cfg80211_rx_mlme_mgmt);
 168
 169 void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr)
 170 {
 171         struct wireless_dev *wdev = dev->ieee80211_ptr;
 172         struct wiphy *wiphy = wdev->wiphy;
 173         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
 174
 175         trace_cfg80211_send_auth_timeout(dev, addr);
 176
 177         nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL);
 178         cfg80211_sme_auth_timeout(wdev);
 179 }
 180 EXPORT_SYMBOL(cfg80211_auth_timeout);
 181
 182 void cfg80211_assoc_failure(struct net_device *dev,
 183                             struct cfg80211_assoc_failure *data)
 184 {
 185         struct wireless_dev *wdev = dev->ieee80211_ptr;
 186         struct wiphy *wiphy = wdev->wiphy;
 187         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
 188         const u8 *addr = data->ap_mld_addr ?: data->bss[0]->bssid;
 189         int i;
 190
 191         trace_cfg80211_send_assoc_failure(dev, data);
 192
 193         if (data->timeout) {
 194                 nl80211_send_assoc_timeout(rdev, dev, addr, GFP_KERNEL);
 195                 cfg80211_sme_assoc_timeout(wdev);
 196         } else {
 197                 cfg80211_sme_abandon_assoc(wdev);
 198         }
 199
 200         for (i = 0; i < ARRAY_SIZE(data->bss); i++) {
 201                 struct cfg80211_bss *bss = data->bss[i];
 202
 203                 if (!bss)
 204                         continue;
 205
 206                 cfg80211_unhold_bss(bss_from_pub(bss));
 207                 cfg80211_put_bss(wiphy, bss);
 208         }
 209 }
 210 EXPORT_SYMBOL(cfg80211_assoc_failure);
 211
 212 void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len,
 213                            bool reconnect)
 214 {
 215         struct wireless_dev *wdev = dev->ieee80211_ptr;
 216         struct ieee80211_mgmt *mgmt = (void *)buf;
 217
 218         ASSERT_WDEV_LOCK(wdev);
 219
 220         trace_cfg80211_tx_mlme_mgmt(dev, buf, len, reconnect);
 221
 222         if (WARN_ON(len < 2))
 223                 return;
 224
 225         if (ieee80211_is_deauth(mgmt->frame_control))
 226                 cfg80211_process_deauth(wdev, buf, len, reconnect);
 227         else
 228                 cfg80211_process_disassoc(wdev, buf, len, reconnect);
 229 }
 230 EXPORT_SYMBOL(cfg80211_tx_mlme_mgmt);
 231
 232 void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
 233                                   enum nl80211_key_type key_type, int key_id,
 234                                   const u8 *tsc, gfp_t gfp)
 235 {
 236         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
 237         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
 238 #ifdef CONFIG_CFG80211_WEXT
 239         union iwreq_data wrqu;
 240         char *buf = kmalloc(128, gfp);
 241
 242         if (buf) {
 243                 sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
 244                         "keyid=%d %scast addr=%pM)", key_id,
 245                         key_type == NL80211_KEYTYPE_GROUP ? "broad" : "uni",
 246                         addr);
 247                 memset(&wrqu, 0, sizeof(wrqu));
 248                 wrqu.data.length = strlen(buf);
 249                 wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
 250                 kfree(buf);
 251         }
 252 #endif
 253
 254         trace_cfg80211_michael_mic_failure(dev, addr, key_type, key_id, tsc);
 255         nl80211_michael_mic_failure(rdev, dev, addr, key_type, key_id, tsc, gfp);
 256 }
 257 EXPORT_SYMBOL(cfg80211_michael_mic_failure);
 258
 259 /* some MLME handling for userspace SME */
 260 int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
 261                        struct net_device *dev,
 262                        struct cfg80211_auth_request *req)
 263 {
 264         struct wireless_dev *wdev = dev->ieee80211_ptr;
 265
 266         ASSERT_WDEV_LOCK(wdev);
 267
 268         if (!req->bss)
 269                 return -ENOENT;
 270
 271         if (req->link_id >= 0 &&
 272             !(wdev->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))
 273                 return -EINVAL;
 274
 275         if (req->auth_type == NL80211_AUTHTYPE_SHARED_KEY) {
 276                 if (!req->key || !req->key_len ||
 277                     req->key_idx < 0 || req->key_idx > 3)
 278                         return -EINVAL;
 279         }
 280
 281         if (wdev->connected &&
 282             ether_addr_equal(req->bss->bssid, wdev->u.client.connected_addr))
 283                 return -EALREADY;
 284
 285         if (ether_addr_equal(req->bss->bssid, dev->dev_addr) ||
 286             (req->link_id >= 0 &&
 287              ether_addr_equal(req->ap_mld_addr, dev->dev_addr)))
 288                 return -EINVAL;
 289
 290         return rdev_auth(rdev, dev, req);
 291 }
 292
 293 /*  Do a logical ht_capa &= ht_capa_mask.  */
 294 void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
 295                                const struct ieee80211_ht_cap *ht_capa_mask)
 296 {
 297         int i;
 298         u8 *p1, *p2;
 299         if (!ht_capa_mask) {
 300                 memset(ht_capa, 0, sizeof(*ht_capa));
 301                 return;
 302         }
 303
 304         p1 = (u8*)(ht_capa);
 305         p2 = (u8*)(ht_capa_mask);
 306         for (i = 0; i < sizeof(*ht_capa); i++)
 307                 p1[i] &= p2[i];
 308 }
 309
 310 /*  Do a logical vht_capa &= vht_capa_mask.  */
 311 void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
 312                                 const struct ieee80211_vht_cap *vht_capa_mask)
 313 {
 314         int i;
 315         u8 *p1, *p2;
 316         if (!vht_capa_mask) {
 317                 memset(vht_capa, 0, sizeof(*vht_capa));
 318                 return;
 319         }
 320
 321         p1 = (u8*)(vht_capa);
 322         p2 = (u8*)(vht_capa_mask);
 323         for (i = 0; i < sizeof(*vht_capa); i++)
 324                 p1[i] &= p2[i];
 325 }
 326
 327 /* Note: caller must cfg80211_put_bss() regardless of result */
 328 int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
 329                         struct net_device *dev,
 330                         struct cfg80211_assoc_request *req)
 331 {
 332         struct wireless_dev *wdev = dev->ieee80211_ptr;
 333         int err, i, j;
 334
 335         ASSERT_WDEV_LOCK(wdev);
 336
 337         for (i = 1; i < ARRAY_SIZE(req->links); i++) {
 338                 if (!req->links[i].bss)
 339                         continue;
 340                 for (j = 0; j < i; j++) {
 341                         if (req->links[i].bss == req->links[j].bss)
 342                                 return -EINVAL;
 343                 }
 344
 345                 if (ether_addr_equal(req->links[i].bss->bssid, dev->dev_addr))
 346                         return -EINVAL;
 347         }
 348
 349         if (wdev->connected &&
 350             (!req->prev_bssid ||
 351              !ether_addr_equal(wdev->u.client.connected_addr, req->prev_bssid)))
 352                 return -EALREADY;
 353
 354         if ((req->bss && ether_addr_equal(req->bss->bssid, dev->dev_addr)) ||
 355             (req->link_id >= 0 &&
 356              ether_addr_equal(req->ap_mld_addr, dev->dev_addr)))
 357                 return -EINVAL;
 358
 359         cfg80211_oper_and_ht_capa(&req->ht_capa_mask,
 360                                   rdev->wiphy.ht_capa_mod_mask);
 361         cfg80211_oper_and_vht_capa(&req->vht_capa_mask,
 362                                    rdev->wiphy.vht_capa_mod_mask);
 363
 364         err = rdev_assoc(rdev, dev, req);
 365         if (!err) {
 366                 int link_id;
 367
 368                 if (req->bss) {
 369                         cfg80211_ref_bss(&rdev->wiphy, req->bss);
 370                         cfg80211_hold_bss(bss_from_pub(req->bss));
 371                 }
 372
 373                 for (link_id = 0; link_id < ARRAY_SIZE(req->links); link_id++) {
 374                         if (!req->links[link_id].bss)
 375                                 continue;
 376                         cfg80211_ref_bss(&rdev->wiphy, req->links[link_id].bss);
 377                         cfg80211_hold_bss(bss_from_pub(req->links[link_id].bss));
 378                 }
 379         }
 380         return err;
 381 }
 382
 383 int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
 384                          struct net_device *dev, const u8 *bssid,
 385                          const u8 *ie, int ie_len, u16 reason,
 386                          bool local_state_change)
 387 {
 388         struct wireless_dev *wdev = dev->ieee80211_ptr;
 389         struct cfg80211_deauth_request req = {
 390                 .bssid = bssid,
 391                 .reason_code = reason,
 392                 .ie = ie,
 393                 .ie_len = ie_len,
 394                 .local_state_change = local_state_change,
 395         };
 396
 397         ASSERT_WDEV_LOCK(wdev);
 398
 399         if (local_state_change &&
 400             (!wdev->connected ||
 401              !ether_addr_equal(wdev->u.client.connected_addr, bssid)))
 402                 return 0;
 403
 404         if (ether_addr_equal(wdev->disconnect_bssid, bssid) ||
 405             (wdev->connected &&
 406              ether_addr_equal(wdev->u.client.connected_addr, bssid)))
 407                 wdev->conn_owner_nlportid = 0;
 408
 409         return rdev_deauth(rdev, dev, &req);
 410 }
 411
 412 int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
 413                            struct net_device *dev, const u8 *ap_addr,
 414                            const u8 *ie, int ie_len, u16 reason,
 415                            bool local_state_change)
 416 {
 417         struct wireless_dev *wdev = dev->ieee80211_ptr;
 418         struct cfg80211_disassoc_request req = {
 419                 .reason_code = reason,
 420                 .local_state_change = local_state_change,
 421                 .ie = ie,
 422                 .ie_len = ie_len,
 423                 .ap_addr = ap_addr,
 424         };
 425         int err;
 426
 427         ASSERT_WDEV_LOCK(wdev);
 428
 429         if (!wdev->connected)
 430                 return -ENOTCONN;
 431
 432         if (memcmp(wdev->u.client.connected_addr, ap_addr, ETH_ALEN))
 433                 return -ENOTCONN;
 434
 435         err = rdev_disassoc(rdev, dev, &req);
 436         if (err)
 437                 return err;
 438
 439         /* driver should have reported the disassoc */
 440         WARN_ON(wdev->connected);
 441         return 0;
 442 }
 443
 444 void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
 445                         struct net_device *dev)
 446 {
 447         struct wireless_dev *wdev = dev->ieee80211_ptr;
 448         u8 bssid[ETH_ALEN];
 449
 450         ASSERT_WDEV_LOCK(wdev);
 451
 452         if (!rdev->ops->deauth)
 453                 return;
 454
 455         if (!wdev->connected)
 456                 return;
 457
 458         memcpy(bssid, wdev->u.client.connected_addr, ETH_ALEN);
 459         cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0,
 460                              WLAN_REASON_DEAUTH_LEAVING, false);
 461 }
 462
 463 struct cfg80211_mgmt_registration {
 464         struct list_head list;
 465         struct wireless_dev *wdev;
 466
 467         u32 nlportid;
 468
 469         int match_len;
 470
 471         __le16 frame_type;
 472
 473         bool multicast_rx;
 474
 475         u8 match[];
 476 };
 477
 478 static void cfg80211_mgmt_registrations_update(struct wireless_dev *wdev)
 479 {
 480         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 481         struct wireless_dev *tmp;
 482         struct cfg80211_mgmt_registration *reg;
 483         struct mgmt_frame_regs upd = {};
 484
 485         lockdep_assert_held(&rdev->wiphy.mtx);
 486
 487         spin_lock_bh(&rdev->mgmt_registrations_lock);
 488         if (!wdev->mgmt_registrations_need_update) {
 489                 spin_unlock_bh(&rdev->mgmt_registrations_lock);
 490                 return;
 491         }
 492
 493         rcu_read_lock();
 494         list_for_each_entry_rcu(tmp, &rdev->wiphy.wdev_list, list) {
 495                 list_for_each_entry(reg, &tmp->mgmt_registrations, list) {
 496                         u32 mask = BIT(le16_to_cpu(reg->frame_type) >> 4);
 497                         u32 mcast_mask = 0;
 498
 499                         if (reg->multicast_rx)
 500                                 mcast_mask = mask;
 501
 502                         upd.global_stypes |= mask;
 503                         upd.global_mcast_stypes |= mcast_mask;
 504
 505                         if (tmp == wdev) {
 506                                 upd.interface_stypes |= mask;
 507                                 upd.interface_mcast_stypes |= mcast_mask;
 508                         }
 509                 }
 510         }
 511         rcu_read_unlock();
 512
 513         wdev->mgmt_registrations_need_update = 0;
 514         spin_unlock_bh(&rdev->mgmt_registrations_lock);
 515
 516         rdev_update_mgmt_frame_registrations(rdev, wdev, &upd);
 517 }
 518
 519 void cfg80211_mgmt_registrations_update_wk(struct work_struct *wk)
 520 {
 521         struct cfg80211_registered_device *rdev;
 522         struct wireless_dev *wdev;
 523
 524         rdev = container_of(wk, struct cfg80211_registered_device,
 525                             mgmt_registrations_update_wk);
 526
 527         wiphy_lock(&rdev->wiphy);
 528         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list)
 529                 cfg80211_mgmt_registrations_update(wdev);
 530         wiphy_unlock(&rdev->wiphy);
 531 }
 532
 533 int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_portid,
 534                                 u16 frame_type, const u8 *match_data,
 535                                 int match_len, bool multicast_rx,
 536                                 struct netlink_ext_ack *extack)
 537 {
 538         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 539         struct cfg80211_mgmt_registration *reg, *nreg;
 540         int err = 0;
 541         u16 mgmt_type;
 542         bool update_multicast = false;
 543
 544         if (!wdev->wiphy->mgmt_stypes)
 545                 return -EOPNOTSUPP;
 546
 547         if ((frame_type & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT) {
 548                 NL_SET_ERR_MSG(extack, "frame type not management");
 549                 return -EINVAL;
 550         }
 551
 552         if (frame_type & ~(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) {
 553                 NL_SET_ERR_MSG(extack, "Invalid frame type");
 554                 return -EINVAL;
 555         }
 556
 557         mgmt_type = (frame_type & IEEE80211_FCTL_STYPE) >> 4;
 558         if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].rx & BIT(mgmt_type))) {
 559                 NL_SET_ERR_MSG(extack,
 560                                "Registration to specific type not supported");
 561                 return -EINVAL;
 562         }
 563
 564         /*
 565          * To support Pre Association Security Negotiation (PASN), registration
 566          * for authentication frames should be supported. However, as some
 567          * versions of the user space daemons wrongly register to all types of
 568          * authentication frames (which might result in unexpected behavior)
 569          * allow such registration if the request is for a specific
 570          * authentication algorithm number.
 571          */
 572         if (wdev->iftype == NL80211_IFTYPE_STATION &&
 573             (frame_type & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_AUTH &&
 574             !(match_data && match_len >= 2)) {
 575                 NL_SET_ERR_MSG(extack,
 576                                "Authentication algorithm number required");
 577                 return -EINVAL;
 578         }
 579
 580         nreg = kzalloc(sizeof(*reg) + match_len, GFP_KERNEL);
 581         if (!nreg)
 582                 return -ENOMEM;
 583
 584         spin_lock_bh(&rdev->mgmt_registrations_lock);
 585
 586         list_for_each_entry(reg, &wdev->mgmt_registrations, list) {
 587                 int mlen = min(match_len, reg->match_len);
 588
 589                 if (frame_type != le16_to_cpu(reg->frame_type))
 590                         continue;
 591
 592                 if (memcmp(reg->match, match_data, mlen) == 0) {
 593                         if (reg->multicast_rx != multicast_rx) {
 594                                 update_multicast = true;
 595                                 reg->multicast_rx = multicast_rx;
 596                                 break;
 597                         }
 598                         NL_SET_ERR_MSG(extack, "Match already configured");
 599                         err = -EALREADY;
 600                         break;
 601                 }
 602         }
 603
 604         if (err)
 605                 goto out;
 606
 607         if (update_multicast) {
 608                 kfree(nreg);
 609         } else {
 610                 memcpy(nreg->match, match_data, match_len);
 611                 nreg->match_len = match_len;
 612                 nreg->nlportid = snd_portid;
 613                 nreg->frame_type = cpu_to_le16(frame_type);
 614                 nreg->wdev = wdev;
 615                 nreg->multicast_rx = multicast_rx;
 616                 list_add(&nreg->list, &wdev->mgmt_registrations);
 617         }
 618         wdev->mgmt_registrations_need_update = 1;
 619         spin_unlock_bh(&rdev->mgmt_registrations_lock);
 620
 621         cfg80211_mgmt_registrations_update(wdev);
 622
 623         return 0;
 624
 625  out:
 626         kfree(nreg);
 627         spin_unlock_bh(&rdev->mgmt_registrations_lock);
 628
 629         return err;
 630 }
 631
 632 void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlportid)
 633 {
 634         struct wiphy *wiphy = wdev->wiphy;
 635         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
 636         struct cfg80211_mgmt_registration *reg, *tmp;
 637
 638         spin_lock_bh(&rdev->mgmt_registrations_lock);
 639
 640         list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) {
 641                 if (reg->nlportid != nlportid)
 642                         continue;
 643
 644                 list_del(&reg->list);
 645                 kfree(reg);
 646
 647                 wdev->mgmt_registrations_need_update = 1;
 648                 schedule_work(&rdev->mgmt_registrations_update_wk);
 649         }
 650
 651         spin_unlock_bh(&rdev->mgmt_registrations_lock);
 652
 653         if (nlportid && rdev->crit_proto_nlportid == nlportid) {
 654                 rdev->crit_proto_nlportid = 0;
 655                 rdev_crit_proto_stop(rdev, wdev);
 656         }
 657
 658         if (nlportid == wdev->ap_unexpected_nlportid)
 659                 wdev->ap_unexpected_nlportid = 0;
 660 }
 661
 662 void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev)
 663 {
 664         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 665         struct cfg80211_mgmt_registration *reg, *tmp;
 666
 667         spin_lock_bh(&rdev->mgmt_registrations_lock);
 668         list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) {
 669                 list_del(&reg->list);
 670                 kfree(reg);
 671         }
 672         wdev->mgmt_registrations_need_update = 1;
 673         spin_unlock_bh(&rdev->mgmt_registrations_lock);
 674
 675         cfg80211_mgmt_registrations_update(wdev);
 676 }
 677
 678 static bool cfg80211_allowed_address(struct wireless_dev *wdev, const u8 *addr)
 679 {
 680         int i;
 681
 682         for_each_valid_link(wdev, i) {
 683                 if (ether_addr_equal(addr, wdev->links[i].addr))
 684                         return true;
 685         }
 686
 687         return ether_addr_equal(addr, wdev_address(wdev));
 688 }
 689
 690 static bool cfg80211_allowed_random_address(struct wireless_dev *wdev,
 691                                             const struct ieee80211_mgmt *mgmt)
 692 {
 693         if (ieee80211_is_auth(mgmt->frame_control) ||
 694             ieee80211_is_deauth(mgmt->frame_control)) {
 695                 /* Allow random TA to be used with authentication and
 696                  * deauthentication frames if the driver has indicated support.
 697                  */
 698                 if (wiphy_ext_feature_isset(
 699                             wdev->wiphy,
 700                             NL80211_EXT_FEATURE_AUTH_AND_DEAUTH_RANDOM_TA))
 701                         return true;
 702         } else if (ieee80211_is_action(mgmt->frame_control) &&
 703                    mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
 704                 /* Allow random TA to be used with Public Action frames if the
 705                  * driver has indicated support.
 706                  */
 707                 if (!wdev->connected &&
 708                     wiphy_ext_feature_isset(
 709                             wdev->wiphy,
 710                             NL80211_EXT_FEATURE_MGMT_TX_RANDOM_TA))
 711                         return true;
 712
 713                 if (wdev->connected &&
 714                     wiphy_ext_feature_isset(
 715                             wdev->wiphy,
 716                             NL80211_EXT_FEATURE_MGMT_TX_RANDOM_TA_CONNECTED))
 717                         return true;
 718         }
 719
 720         return false;
 721 }
 722
 723 int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
 724                           struct wireless_dev *wdev,
 725                           struct cfg80211_mgmt_tx_params *params, u64 *cookie)
 726 {
 727         const struct ieee80211_mgmt *mgmt;
 728         u16 stype;
 729
 730         if (!wdev->wiphy->mgmt_stypes)
 731                 return -EOPNOTSUPP;
 732
 733         if (!rdev->ops->mgmt_tx)
 734                 return -EOPNOTSUPP;
 735
 736         if (params->len < 24 + 1)
 737                 return -EINVAL;
 738
 739         mgmt = (const struct ieee80211_mgmt *)params->buf;
 740
 741         if (!ieee80211_is_mgmt(mgmt->frame_control))
 742                 return -EINVAL;
 743
 744         stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE;
 745         if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].tx & BIT(stype >> 4)))
 746                 return -EINVAL;
 747
 748         if (ieee80211_is_action(mgmt->frame_control) &&
 749             mgmt->u.action.category != WLAN_CATEGORY_PUBLIC) {
 750                 int err = 0;
 751
 752                 wdev_lock(wdev);
 753
 754                 switch (wdev->iftype) {
 755                 case NL80211_IFTYPE_ADHOC:
 756                         /*
 757                          * check for IBSS DA must be done by driver as
 758                          * cfg80211 doesn't track the stations
 759                          */
 760                         if (!wdev->u.ibss.current_bss ||
 761                             !ether_addr_equal(wdev->u.ibss.current_bss->pub.bssid,
 762                                               mgmt->bssid)) {
 763                                 err = -ENOTCONN;
 764                                 break;
 765                         }
 766                         break;
 767                 case NL80211_IFTYPE_STATION:
 768                 case NL80211_IFTYPE_P2P_CLIENT:
 769                         if (!wdev->connected) {
 770                                 err = -ENOTCONN;
 771                                 break;
 772                         }
 773
 774                         /* FIXME: MLD may address this differently */
 775
 776                         if (!ether_addr_equal(wdev->u.client.connected_addr,
 777                                               mgmt->bssid)) {
 778                                 err = -ENOTCONN;
 779                                 break;
 780                         }
 781
 782                         /* for station, check that DA is the AP */
 783                         if (!ether_addr_equal(wdev->u.client.connected_addr,
 784                                               mgmt->da)) {
 785                                 err = -ENOTCONN;
 786                                 break;
 787                         }
 788                         break;
 789                 case NL80211_IFTYPE_AP:
 790                 case NL80211_IFTYPE_P2P_GO:
 791                 case NL80211_IFTYPE_AP_VLAN:
 792                         if (!ether_addr_equal(mgmt->bssid, wdev_address(wdev)) &&
 793                             (params->link_id < 0 ||
 794                              !ether_addr_equal(mgmt->bssid,
 795                                                wdev->links[params->link_id].addr)))
 796                                 err = -EINVAL;
 797                         break;
 798                 case NL80211_IFTYPE_MESH_POINT:
 799                         if (!ether_addr_equal(mgmt->sa, mgmt->bssid)) {
 800                                 err = -EINVAL;
 801                                 break;
 802                         }
 803                         /*
 804                          * check for mesh DA must be done by driver as
 805                          * cfg80211 doesn't track the stations
 806                          */
 807                         break;
 808                 case NL80211_IFTYPE_P2P_DEVICE:
 809                         /*
 810                          * fall through, P2P device only supports
 811                          * public action frames
 812                          */
 813                 case NL80211_IFTYPE_NAN:
 814                 default:
 815                         err = -EOPNOTSUPP;
 816                         break;
 817                 }
 818                 wdev_unlock(wdev);
 819
 820                 if (err)
 821                         return err;
 822         }
 823
 824         if (!cfg80211_allowed_address(wdev, mgmt->sa) &&
 825             !cfg80211_allowed_random_address(wdev, mgmt))
 826                 return -EINVAL;
 827
 828         /* Transmit the management frame as requested by user space */
 829         return rdev_mgmt_tx(rdev, wdev, params, cookie);
 830 }
 831
 832 bool cfg80211_rx_mgmt_ext(struct wireless_dev *wdev,
 833                           struct cfg80211_rx_info *info)
 834 {
 835         struct wiphy *wiphy = wdev->wiphy;
 836         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
 837         struct cfg80211_mgmt_registration *reg;
 838         const struct ieee80211_txrx_stypes *stypes =
 839                 &wiphy->mgmt_stypes[wdev->iftype];
 840         struct ieee80211_mgmt *mgmt = (void *)info->buf;
 841         const u8 *data;
 842         int data_len;
 843         bool result = false;
 844         __le16 ftype = mgmt->frame_control &
 845                 cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE);
 846         u16 stype;
 847
 848         trace_cfg80211_rx_mgmt(wdev, info);
 849         stype = (le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE) >> 4;
 850
 851         if (!(stypes->rx & BIT(stype))) {
 852                 trace_cfg80211_return_bool(false);
 853                 return false;
 854         }
 855
 856         data = info->buf + ieee80211_hdrlen(mgmt->frame_control);
 857         data_len = info->len - ieee80211_hdrlen(mgmt->frame_control);
 858
 859         spin_lock_bh(&rdev->mgmt_registrations_lock);
 860
 861         list_for_each_entry(reg, &wdev->mgmt_registrations, list) {
 862                 if (reg->frame_type != ftype)
 863                         continue;
 864
 865                 if (reg->match_len > data_len)
 866                         continue;
 867
 868                 if (memcmp(reg->match, data, reg->match_len))
 869                         continue;
 870
 871                 /* found match! */
 872
 873                 /* Indicate the received Action frame to user space */
 874                 if (nl80211_send_mgmt(rdev, wdev, reg->nlportid, info,
 875                                       GFP_ATOMIC))
 876                         continue;
 877
 878                 result = true;
 879                 break;
 880         }
 881
 882         spin_unlock_bh(&rdev->mgmt_registrations_lock);
 883
 884         trace_cfg80211_return_bool(result);
 885         return result;
 886 }
 887 EXPORT_SYMBOL(cfg80211_rx_mgmt_ext);
 888
 889 void cfg80211_sched_dfs_chan_update(struct cfg80211_registered_device *rdev)
 890 {
 891         cancel_delayed_work(&rdev->dfs_update_channels_wk);
 892         queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk, 0);
 893 }
 894
 895 void cfg80211_dfs_channels_update_work(struct work_struct *work)
 896 {
 897         struct delayed_work *delayed_work = to_delayed_work(work);
 898         struct cfg80211_registered_device *rdev;
 899         struct cfg80211_chan_def chandef;
 900         struct ieee80211_supported_band *sband;
 901         struct ieee80211_channel *c;
 902         struct wiphy *wiphy;
 903         bool check_again = false;
 904         unsigned long timeout, next_time = 0;
 905         unsigned long time_dfs_update;
 906         enum nl80211_radar_event radar_event;
 907         int bandid, i;
 908
 909         rdev = container_of(delayed_work, struct cfg80211_registered_device,
 910                             dfs_update_channels_wk);
 911         wiphy = &rdev->wiphy;
 912
 913         rtnl_lock();
 914         for (bandid = 0; bandid < NUM_NL80211_BANDS; bandid++) {
 915                 sband = wiphy->bands[bandid];
 916                 if (!sband)
 917                         continue;
 918
 919                 for (i = 0; i < sband->n_channels; i++) {
 920                         c = &sband->channels[i];
 921
 922                         if (!(c->flags & IEEE80211_CHAN_RADAR))
 923                                 continue;
 924
 925                         if (c->dfs_state != NL80211_DFS_UNAVAILABLE &&
 926                             c->dfs_state != NL80211_DFS_AVAILABLE)
 927                                 continue;
 928
 929                         if (c->dfs_state == NL80211_DFS_UNAVAILABLE) {
 930                                 time_dfs_update = IEEE80211_DFS_MIN_NOP_TIME_MS;
 931                                 radar_event = NL80211_RADAR_NOP_FINISHED;
 932                         } else {
 933                                 if (regulatory_pre_cac_allowed(wiphy) ||
 934                                     cfg80211_any_wiphy_oper_chan(wiphy, c))
 935                                         continue;
 936
 937                                 time_dfs_update = REG_PRE_CAC_EXPIRY_GRACE_MS;
 938                                 radar_event = NL80211_RADAR_PRE_CAC_EXPIRED;
 939                         }
 940
 941                         timeout = c->dfs_state_entered +
 942                                   msecs_to_jiffies(time_dfs_update);
 943
 944                         if (time_after_eq(jiffies, timeout)) {
 945                                 c->dfs_state = NL80211_DFS_USABLE;
 946                                 c->dfs_state_entered = jiffies;
 947
 948                                 cfg80211_chandef_create(&chandef, c,
 949                                                         NL80211_CHAN_NO_HT);
 950
 951                                 nl80211_radar_notify(rdev, &chandef,
 952                                                      radar_event, NULL,
 953                                                      GFP_ATOMIC);
 954
 955                                 regulatory_propagate_dfs_state(wiphy, &chandef,
 956                                                                c->dfs_state,
 957                                                                radar_event);
 958                                 continue;
 959                         }
 960
 961                         if (!check_again)
 962                                 next_time = timeout - jiffies;
 963                         else
 964                                 next_time = min(next_time, timeout - jiffies);
 965                         check_again = true;
 966                 }
 967         }
 968         rtnl_unlock();
 969
 970         /* reschedule if there are other channels waiting to be cleared again */
 971         if (check_again)
 972                 queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk,
 973                                    next_time);
 974 }
 975
 976
 977 void __cfg80211_radar_event(struct wiphy *wiphy,
 978                             struct cfg80211_chan_def *chandef,
 979                             bool offchan, gfp_t gfp)
 980 {
 981         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
 982
 983         trace_cfg80211_radar_event(wiphy, chandef, offchan);
 984
 985         /* only set the chandef supplied channel to unavailable, in
 986          * case the radar is detected on only one of multiple channels
 987          * spanned by the chandef.
 988          */
 989         cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_UNAVAILABLE);
 990
 991         if (offchan)
 992                 queue_work(cfg80211_wq, &rdev->background_cac_abort_wk);
 993
 994         cfg80211_sched_dfs_chan_update(rdev);
 995
 996         nl80211_radar_notify(rdev, chandef, NL80211_RADAR_DETECTED, NULL, gfp);
 997
 998         memcpy(&rdev->radar_chandef, chandef, sizeof(struct cfg80211_chan_def));
 999         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
1000 }
1001 EXPORT_SYMBOL(__cfg80211_radar_event);
1002
1003 void cfg80211_cac_event(struct net_device *netdev,
1004                         const struct cfg80211_chan_def *chandef,
1005                         enum nl80211_radar_event event, gfp_t gfp)
1006 {
1007         struct wireless_dev *wdev = netdev->ieee80211_ptr;
1008         struct wiphy *wiphy = wdev->wiphy;
1009         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
1010         unsigned long timeout;
1011
1012         /* not yet supported */
1013         if (wdev->valid_links)
1014                 return;
1015
1016         trace_cfg80211_cac_event(netdev, event);
1017
1018         if (WARN_ON(!wdev->cac_started && event != NL80211_RADAR_CAC_STARTED))
1019                 return;
1020
1021         switch (event) {
1022         case NL80211_RADAR_CAC_FINISHED:
1023                 timeout = wdev->cac_start_time +
1024                           msecs_to_jiffies(wdev->cac_time_ms);
1025                 WARN_ON(!time_after_eq(jiffies, timeout));
1026                 cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_AVAILABLE);
1027                 memcpy(&rdev->cac_done_chandef, chandef,
1028                        sizeof(struct cfg80211_chan_def));
1029                 queue_work(cfg80211_wq, &rdev->propagate_cac_done_wk);
1030                 cfg80211_sched_dfs_chan_update(rdev);
1031                 fallthrough;
1032         case NL80211_RADAR_CAC_ABORTED:
1033                 wdev->cac_started = false;
1034                 break;
1035         case NL80211_RADAR_CAC_STARTED:
1036                 wdev->cac_started = true;
1037                 break;
1038         default:
1039                 WARN_ON(1);
1040                 return;
1041         }
1042
1043         nl80211_radar_notify(rdev, chandef, event, netdev, gfp);
1044 }
1045 EXPORT_SYMBOL(cfg80211_cac_event);
1046
1047 static void
1048 __cfg80211_background_cac_event(struct cfg80211_registered_device *rdev,
1049                                 struct wireless_dev *wdev,
1050                                 const struct cfg80211_chan_def *chandef,
1051                                 enum nl80211_radar_event event)
1052 {
1053         struct wiphy *wiphy = &rdev->wiphy;
1054         struct net_device *netdev;
1055
1056         lockdep_assert_wiphy(&rdev->wiphy);
1057
1058         if (!cfg80211_chandef_valid(chandef))
1059                 return;
1060
1061         if (!rdev->background_radar_wdev)
1062                 return;
1063
1064         switch (event) {
1065         case NL80211_RADAR_CAC_FINISHED:
1066                 cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_AVAILABLE);
1067                 memcpy(&rdev->cac_done_chandef, chandef, sizeof(*chandef));
1068                 queue_work(cfg80211_wq, &rdev->propagate_cac_done_wk);
1069                 cfg80211_sched_dfs_chan_update(rdev);
1070                 wdev = rdev->background_radar_wdev;
1071                 break;
1072         case NL80211_RADAR_CAC_ABORTED:
1073                 if (!cancel_delayed_work(&rdev->background_cac_done_wk))
1074                         return;
1075                 wdev = rdev->background_radar_wdev;
1076                 break;
1077         case NL80211_RADAR_CAC_STARTED:
1078                 break;
1079         default:
1080                 return;
1081         }
1082
1083         netdev = wdev ? wdev->netdev : NULL;
1084         nl80211_radar_notify(rdev, chandef, event, netdev, GFP_KERNEL);
1085 }
1086
1087 static void
1088 cfg80211_background_cac_event(struct cfg80211_registered_device *rdev,
1089                               const struct cfg80211_chan_def *chandef,
1090                               enum nl80211_radar_event event)
1091 {
1092         wiphy_lock(&rdev->wiphy);
1093         __cfg80211_background_cac_event(rdev, rdev->background_radar_wdev,
1094                                         chandef, event);
1095         wiphy_unlock(&rdev->wiphy);
1096 }
1097
1098 void cfg80211_background_cac_done_wk(struct work_struct *work)
1099 {
1100         struct delayed_work *delayed_work = to_delayed_work(work);
1101         struct cfg80211_registered_device *rdev;
1102
1103         rdev = container_of(delayed_work, struct cfg80211_registered_device,
1104                             background_cac_done_wk);
1105         cfg80211_background_cac_event(rdev, &rdev->background_radar_chandef,
1106                                       NL80211_RADAR_CAC_FINISHED);
1107 }
1108
1109 void cfg80211_background_cac_abort_wk(struct work_struct *work)
1110 {
1111         struct cfg80211_registered_device *rdev;
1112
1113         rdev = container_of(work, struct cfg80211_registered_device,
1114                             background_cac_abort_wk);
1115         cfg80211_background_cac_event(rdev, &rdev->background_radar_chandef,
1116                                       NL80211_RADAR_CAC_ABORTED);
1117 }
1118
1119 void cfg80211_background_cac_abort(struct wiphy *wiphy)
1120 {
1121         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
1122
1123         queue_work(cfg80211_wq, &rdev->background_cac_abort_wk);
1124 }
1125 EXPORT_SYMBOL(cfg80211_background_cac_abort);
1126
1127 int
1128 cfg80211_start_background_radar_detection(struct cfg80211_registered_device *rdev,
1129                                           struct wireless_dev *wdev,
1130                                           struct cfg80211_chan_def *chandef)
1131 {
1132         unsigned int cac_time_ms;
1133         int err;
1134
1135         lockdep_assert_wiphy(&rdev->wiphy);
1136
1137         if (!wiphy_ext_feature_isset(&rdev->wiphy,
1138                                      NL80211_EXT_FEATURE_RADAR_BACKGROUND))
1139                 return -EOPNOTSUPP;
1140
1141         /* Offchannel chain already locked by another wdev */
1142         if (rdev->background_radar_wdev && rdev->background_radar_wdev != wdev)
1143                 return -EBUSY;
1144
1145         /* CAC already in progress on the offchannel chain */
1146         if (rdev->background_radar_wdev == wdev &&
1147             delayed_work_pending(&rdev->background_cac_done_wk))
1148                 return -EBUSY;
1149
1150         err = rdev_set_radar_background(rdev, chandef);
1151         if (err)
1152                 return err;
1153
1154         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, chandef);
1155         if (!cac_time_ms)
1156                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
1157
1158         rdev->background_radar_chandef = *chandef;
1159         rdev->background_radar_wdev = wdev; /* Get offchain ownership */
1160
1161         __cfg80211_background_cac_event(rdev, wdev, chandef,
1162                                         NL80211_RADAR_CAC_STARTED);
1163         queue_delayed_work(cfg80211_wq, &rdev->background_cac_done_wk,
1164                            msecs_to_jiffies(cac_time_ms));
1165
1166         return 0;
1167 }
1168
1169 void cfg80211_stop_background_radar_detection(struct wireless_dev *wdev)
1170 {
1171         struct wiphy *wiphy = wdev->wiphy;
1172         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
1173
1174         lockdep_assert_wiphy(wiphy);
1175
1176         if (wdev != rdev->background_radar_wdev)
1177                 return;
1178
1179         rdev_set_radar_background(rdev, NULL);
1180         rdev->background_radar_wdev = NULL; /* Release offchain ownership */
1181
1182         __cfg80211_background_cac_event(rdev, wdev,
1183                                         &rdev->background_radar_chandef,
1184                                         NL80211_RADAR_CAC_ABORTED);
1185 }