net/wireless/core.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Wireless configuration interface internals.
   4  *
   5  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   6  * Copyright (C) 2018-2022 Intel Corporation
   7  */
   8 #ifndef __NET_WIRELESS_CORE_H
   9 #define __NET_WIRELESS_CORE_H
  10 #include <linux/list.h>
  11 #include <linux/netdevice.h>
  12 #include <linux/rbtree.h>
  13 #include <linux/debugfs.h>
  14 #include <linux/rfkill.h>
  15 #include <linux/workqueue.h>
  16 #include <linux/rtnetlink.h>
  17 #include <net/genetlink.h>
  18 #include <net/cfg80211.h>
  19 #include "reg.h"
  20
  21
  22 #define WIPHY_IDX_INVALID       -1
  23
  24 struct cfg80211_registered_device {
  25         const struct cfg80211_ops *ops;
  26         struct list_head list;
  27
  28         /* rfkill support */
  29         struct rfkill_ops rfkill_ops;
  30         struct work_struct rfkill_block;
  31
  32         /* ISO / IEC 3166 alpha2 for which this device is receiving
  33          * country IEs on, this can help disregard country IEs from APs
  34          * on the same alpha2 quickly. The alpha2 may differ from
  35          * cfg80211_regdomain's alpha2 when an intersection has occurred.
  36          * If the AP is reconfigured this can also be used to tell us if
  37          * the country on the country IE changed. */
  38         char country_ie_alpha2[2];
  39
  40         /*
  41          * the driver requests the regulatory core to set this regulatory
  42          * domain as the wiphy's. Only used for %REGULATORY_WIPHY_SELF_MANAGED
  43          * devices using the regulatory_set_wiphy_regd() API
  44          */
  45         const struct ieee80211_regdomain *requested_regd;
  46
  47         /* If a Country IE has been received this tells us the environment
  48          * which its telling us its in. This defaults to ENVIRON_ANY */
  49         enum environment_cap env;
  50
  51         /* wiphy index, internal only */
  52         int wiphy_idx;
  53
  54         /* protected by RTNL */
  55         int devlist_generation, wdev_id;
  56         int opencount;
  57         wait_queue_head_t dev_wait;
  58
  59         struct list_head beacon_registrations;
  60         spinlock_t beacon_registrations_lock;
  61
  62         /* protected by RTNL only */
  63         int num_running_ifaces;
  64         int num_running_monitor_ifaces;
  65         u64 cookie_counter;
  66
  67         /* BSSes/scanning */
  68         spinlock_t bss_lock;
  69         struct list_head bss_list;
  70         struct rb_root bss_tree;
  71         u32 bss_generation;
  72         u32 bss_entries;
  73         struct cfg80211_scan_request *scan_req; /* protected by RTNL */
  74         struct cfg80211_scan_request *int_scan_req;
  75         struct sk_buff *scan_msg;
  76         struct list_head sched_scan_req_list;
  77         time64_t suspend_at;
  78         struct work_struct scan_done_wk;
  79
  80         struct genl_info *cur_cmd_info;
  81
  82         struct work_struct conn_work;
  83         struct work_struct event_work;
  84
  85         struct delayed_work dfs_update_channels_wk;
  86
  87         struct wireless_dev *background_radar_wdev;
  88         struct cfg80211_chan_def background_radar_chandef;
  89         struct delayed_work background_cac_done_wk;
  90         struct work_struct background_cac_abort_wk;
  91
  92         /* netlink port which started critical protocol (0 means not started) */
  93         u32 crit_proto_nlportid;
  94
  95         struct cfg80211_coalesce *coalesce;
  96
  97         struct work_struct destroy_work;
  98         struct work_struct sched_scan_stop_wk;
  99         struct work_struct sched_scan_res_wk;
 100
 101         struct cfg80211_chan_def radar_chandef;
 102         struct work_struct propagate_radar_detect_wk;
 103
 104         struct cfg80211_chan_def cac_done_chandef;
 105         struct work_struct propagate_cac_done_wk;
 106
 107         struct work_struct mgmt_registrations_update_wk;
 108         /* lock for all wdev lists */
 109         spinlock_t mgmt_registrations_lock;
 110
 111         /* must be last because of the way we do wiphy_priv(),
 112          * and it should at least be aligned to NETDEV_ALIGN */
 113         struct wiphy wiphy __aligned(NETDEV_ALIGN);
 114 };
 115
 116 static inline
 117 struct cfg80211_registered_device *wiphy_to_rdev(struct wiphy *wiphy)
 118 {
 119         BUG_ON(!wiphy);
 120         return container_of(wiphy, struct cfg80211_registered_device, wiphy);
 121 }
 122
 123 static inline void
 124 cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
 125 {
 126 #ifdef CONFIG_PM
 127         int i;
 128
 129         if (!rdev->wiphy.wowlan_config)
 130                 return;
 131         for (i = 0; i < rdev->wiphy.wowlan_config->n_patterns; i++)
 132                 kfree(rdev->wiphy.wowlan_config->patterns[i].mask);
 133         kfree(rdev->wiphy.wowlan_config->patterns);
 134         if (rdev->wiphy.wowlan_config->tcp &&
 135             rdev->wiphy.wowlan_config->tcp->sock)
 136                 sock_release(rdev->wiphy.wowlan_config->tcp->sock);
 137         kfree(rdev->wiphy.wowlan_config->tcp);
 138         kfree(rdev->wiphy.wowlan_config->nd_config);
 139         kfree(rdev->wiphy.wowlan_config);
 140 #endif
 141 }
 142
 143 static inline u64 cfg80211_assign_cookie(struct cfg80211_registered_device *rdev)
 144 {
 145         u64 r = ++rdev->cookie_counter;
 146
 147         if (WARN_ON(r == 0))
 148                 r = ++rdev->cookie_counter;
 149
 150         return r;
 151 }
 152
 153 extern struct workqueue_struct *cfg80211_wq;
 154 extern struct list_head cfg80211_rdev_list;
 155 extern int cfg80211_rdev_list_generation;
 156
 157 struct cfg80211_internal_bss {
 158         struct list_head list;
 159         struct list_head hidden_list;
 160         struct rb_node rbn;
 161         u64 ts_boottime;
 162         unsigned long ts;
 163         unsigned long refcount;
 164         atomic_t hold;
 165
 166         /* time at the start of the reception of the first octet of the
 167          * timestamp field of the last beacon/probe received for this BSS.
 168          * The time is the TSF of the BSS specified by %parent_bssid.
 169          */
 170         u64 parent_tsf;
 171
 172         /* the BSS according to which %parent_tsf is set. This is set to
 173          * the BSS that the interface that requested the scan was connected to
 174          * when the beacon/probe was received.
 175          */
 176         u8 parent_bssid[ETH_ALEN] __aligned(2);
 177
 178         /* must be last because of priv member */
 179         struct cfg80211_bss pub;
 180 };
 181
 182 static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub)
 183 {
 184         return container_of(pub, struct cfg80211_internal_bss, pub);
 185 }
 186
 187 static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
 188 {
 189         atomic_inc(&bss->hold);
 190         if (bss->pub.transmitted_bss) {
 191                 bss = container_of(bss->pub.transmitted_bss,
 192                                    struct cfg80211_internal_bss, pub);
 193                 atomic_inc(&bss->hold);
 194         }
 195 }
 196
 197 static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
 198 {
 199         int r = atomic_dec_return(&bss->hold);
 200         WARN_ON(r < 0);
 201         if (bss->pub.transmitted_bss) {
 202                 bss = container_of(bss->pub.transmitted_bss,
 203                                    struct cfg80211_internal_bss, pub);
 204                 r = atomic_dec_return(&bss->hold);
 205                 WARN_ON(r < 0);
 206         }
 207 }
 208
 209
 210 struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
 211 int get_wiphy_idx(struct wiphy *wiphy);
 212
 213 struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
 214
 215 int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
 216                           struct net *net);
 217
 218 void cfg80211_init_wdev(struct wireless_dev *wdev);
 219 void cfg80211_register_wdev(struct cfg80211_registered_device *rdev,
 220                             struct wireless_dev *wdev);
 221
 222 static inline void wdev_lock(struct wireless_dev *wdev)
 223         __acquires(wdev)
 224 {
 225         mutex_lock(&wdev->mtx);
 226         __acquire(wdev->mtx);
 227 }
 228
 229 static inline void wdev_unlock(struct wireless_dev *wdev)
 230         __releases(wdev)
 231 {
 232         __release(wdev->mtx);
 233         mutex_unlock(&wdev->mtx);
 234 }
 235
 236 #define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
 237
 238 static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
 239 {
 240         lockdep_assert_held(&rdev->wiphy.mtx);
 241
 242         return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
 243                rdev->num_running_ifaces > 0;
 244 }
 245
 246 enum cfg80211_event_type {
 247         EVENT_CONNECT_RESULT,
 248         EVENT_ROAMED,
 249         EVENT_DISCONNECTED,
 250         EVENT_IBSS_JOINED,
 251         EVENT_STOPPED,
 252         EVENT_PORT_AUTHORIZED,
 253 };
 254
 255 struct cfg80211_event {
 256         struct list_head list;
 257         enum cfg80211_event_type type;
 258
 259         union {
 260                 struct cfg80211_connect_resp_params cr;
 261                 struct cfg80211_roam_info rm;
 262                 struct {
 263                         const u8 *ie;
 264                         size_t ie_len;
 265                         u16 reason;
 266                         bool locally_generated;
 267                 } dc;
 268                 struct {
 269                         u8 bssid[ETH_ALEN];
 270                         struct ieee80211_channel *channel;
 271                 } ij;
 272                 struct {
 273                         u8 bssid[ETH_ALEN];
 274                         const u8 *td_bitmap;
 275                         u8 td_bitmap_len;
 276                 } pa;
 277         };
 278 };
 279
 280 struct cfg80211_cached_keys {
 281         struct key_params params[CFG80211_MAX_WEP_KEYS];
 282         u8 data[CFG80211_MAX_WEP_KEYS][WLAN_KEY_LEN_WEP104];
 283         int def;
 284 };
 285
 286 struct cfg80211_beacon_registration {
 287         struct list_head list;
 288         u32 nlportid;
 289 };
 290
 291 struct cfg80211_cqm_config {
 292         u32 rssi_hyst;
 293         s32 last_rssi_event_value;
 294         int n_rssi_thresholds;
 295         s32 rssi_thresholds[];
 296 };
 297
 298 void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev);
 299
 300 /* free object */
 301 void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
 302
 303 int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
 304                         char *newname);
 305
 306 void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
 307
 308 void cfg80211_bss_expire(struct cfg80211_registered_device *rdev);
 309 void cfg80211_bss_age(struct cfg80211_registered_device *rdev,
 310                       unsigned long age_secs);
 311 void cfg80211_update_assoc_bss_entry(struct wireless_dev *wdev,
 312                                      unsigned int link,
 313                                      struct ieee80211_channel *channel);
 314
 315 /* IBSS */
 316 int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
 317                          struct net_device *dev,
 318                          struct cfg80211_ibss_params *params,
 319                          struct cfg80211_cached_keys *connkeys);
 320 void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
 321 int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
 322                           struct net_device *dev, bool nowext);
 323 int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
 324                         struct net_device *dev, bool nowext);
 325 void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid,
 326                             struct ieee80211_channel *channel);
 327 int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
 328                             struct wireless_dev *wdev);
 329
 330 /* mesh */
 331 extern const struct mesh_config default_mesh_config;
 332 extern const struct mesh_setup default_mesh_setup;
 333 int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
 334                          struct net_device *dev,
 335                          struct mesh_setup *setup,
 336                          const struct mesh_config *conf);
 337 int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
 338                           struct net_device *dev);
 339 int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
 340                         struct net_device *dev);
 341 int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
 342                               struct wireless_dev *wdev,
 343                               struct cfg80211_chan_def *chandef);
 344
 345 /* OCB */
 346 int __cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
 347                         struct net_device *dev,
 348                         struct ocb_setup *setup);
 349 int cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
 350                       struct net_device *dev,
 351                       struct ocb_setup *setup);
 352 int __cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
 353                          struct net_device *dev);
 354 int cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
 355                        struct net_device *dev);
 356
 357 /* AP */
 358 int __cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
 359                        struct net_device *dev, int link,
 360                        bool notify);
 361 int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
 362                      struct net_device *dev, int link,
 363                      bool notify);
 364
 365 /* MLME */
 366 int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
 367                        struct net_device *dev,
 368                        struct cfg80211_auth_request *req);
 369 int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
 370                         struct net_device *dev,
 371                         struct cfg80211_assoc_request *req);
 372 int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
 373                          struct net_device *dev, const u8 *bssid,
 374                          const u8 *ie, int ie_len, u16 reason,
 375                          bool local_state_change);
 376 int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
 377                            struct net_device *dev, const u8 *ap_addr,
 378                            const u8 *ie, int ie_len, u16 reason,
 379                            bool local_state_change);
 380 void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
 381                         struct net_device *dev);
 382 int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
 383                                 u16 frame_type, const u8 *match_data,
 384                                 int match_len, bool multicast_rx,
 385                                 struct netlink_ext_ack *extack);
 386 void cfg80211_mgmt_registrations_update_wk(struct work_struct *wk);
 387 void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
 388 void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
 389 int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
 390                           struct wireless_dev *wdev,
 391                           struct cfg80211_mgmt_tx_params *params,
 392                           u64 *cookie);
 393 void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
 394                                const struct ieee80211_ht_cap *ht_capa_mask);
 395 void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
 396                                 const struct ieee80211_vht_cap *vht_capa_mask);
 397
 398 /* SME events */
 399 int cfg80211_connect(struct cfg80211_registered_device *rdev,
 400                      struct net_device *dev,
 401                      struct cfg80211_connect_params *connect,
 402                      struct cfg80211_cached_keys *connkeys,
 403                      const u8 *prev_bssid);
 404 void __cfg80211_connect_result(struct net_device *dev,
 405                                struct cfg80211_connect_resp_params *params,
 406                                bool wextev);
 407 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
 408                              size_t ie_len, u16 reason, bool from_ap);
 409 int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
 410                         struct net_device *dev, u16 reason,
 411                         bool wextev);
 412 void __cfg80211_roamed(struct wireless_dev *wdev,
 413                        struct cfg80211_roam_info *info);
 414 void __cfg80211_port_authorized(struct wireless_dev *wdev, const u8 *bssid,
 415                                 const u8 *td_bitmap, u8 td_bitmap_len);
 416 int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
 417                               struct wireless_dev *wdev);
 418 void cfg80211_autodisconnect_wk(struct work_struct *work);
 419
 420 /* SME implementation */
 421 void cfg80211_conn_work(struct work_struct *work);
 422 void cfg80211_sme_scan_done(struct net_device *dev);
 423 bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status);
 424 void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len);
 425 void cfg80211_sme_disassoc(struct wireless_dev *wdev);
 426 void cfg80211_sme_deauth(struct wireless_dev *wdev);
 427 void cfg80211_sme_auth_timeout(struct wireless_dev *wdev);
 428 void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev);
 429 void cfg80211_sme_abandon_assoc(struct wireless_dev *wdev);
 430
 431 /* internal helpers */
 432 bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
 433 bool cfg80211_valid_key_idx(struct cfg80211_registered_device *rdev,
 434                             int key_idx, bool pairwise);
 435 int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
 436                                    struct key_params *params, int key_idx,
 437                                    bool pairwise, const u8 *mac_addr);
 438 void __cfg80211_scan_done(struct work_struct *wk);
 439 void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,
 440                            bool send_message);
 441 void cfg80211_add_sched_scan_req(struct cfg80211_registered_device *rdev,
 442                                  struct cfg80211_sched_scan_request *req);
 443 int cfg80211_sched_scan_req_possible(struct cfg80211_registered_device *rdev,
 444                                      bool want_multi);
 445 void cfg80211_sched_scan_results_wk(struct work_struct *work);
 446 int cfg80211_stop_sched_scan_req(struct cfg80211_registered_device *rdev,
 447                                  struct cfg80211_sched_scan_request *req,
 448                                  bool driver_initiated);
 449 int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
 450                                u64 reqid, bool driver_initiated);
 451 void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
 452 int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
 453                           struct net_device *dev, enum nl80211_iftype ntype,
 454                           struct vif_params *params);
 455 void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
 456 void cfg80211_process_wdev_events(struct wireless_dev *wdev);
 457
 458 bool cfg80211_does_bw_fit_range(const struct ieee80211_freq_range *freq_range,
 459                                 u32 center_freq_khz, u32 bw_khz);
 460
 461 int cfg80211_scan(struct cfg80211_registered_device *rdev);
 462
 463 extern struct work_struct cfg80211_disconnect_work;
 464
 465 /**
 466  * cfg80211_chandef_dfs_usable - checks if chandef is DFS usable
 467  * @wiphy: the wiphy to validate against
 468  * @chandef: the channel definition to check
 469  *
 470  * Checks if chandef is usable and we can/need start CAC on such channel.
 471  *
 472  * Return: true if all channels available and at least
 473  *         one channel requires CAC (NL80211_DFS_USABLE)
 474  */
 475 bool cfg80211_chandef_dfs_usable(struct wiphy *wiphy,
 476                                  const struct cfg80211_chan_def *chandef);
 477
 478 void cfg80211_set_dfs_state(struct wiphy *wiphy,
 479                             const struct cfg80211_chan_def *chandef,
 480                             enum nl80211_dfs_state dfs_state);
 481
 482 void cfg80211_dfs_channels_update_work(struct work_struct *work);
 483
 484 unsigned int
 485 cfg80211_chandef_dfs_cac_time(struct wiphy *wiphy,
 486                               const struct cfg80211_chan_def *chandef);
 487
 488 void cfg80211_sched_dfs_chan_update(struct cfg80211_registered_device *rdev);
 489
 490 int
 491 cfg80211_start_background_radar_detection(struct cfg80211_registered_device *rdev,
 492                                           struct wireless_dev *wdev,
 493                                           struct cfg80211_chan_def *chandef);
 494
 495 void cfg80211_stop_background_radar_detection(struct wireless_dev *wdev);
 496
 497 void cfg80211_background_cac_done_wk(struct work_struct *work);
 498
 499 void cfg80211_background_cac_abort_wk(struct work_struct *work);
 500
 501 bool cfg80211_any_wiphy_oper_chan(struct wiphy *wiphy,
 502                                   struct ieee80211_channel *chan);
 503
 504 bool cfg80211_beaconing_iface_active(struct wireless_dev *wdev);
 505
 506 bool cfg80211_is_sub_chan(struct cfg80211_chan_def *chandef,
 507                           struct ieee80211_channel *chan,
 508                           bool primary_only);
 509 bool cfg80211_wdev_on_sub_chan(struct wireless_dev *wdev,
 510                                struct ieee80211_channel *chan,
 511                                bool primary_only);
 512
 513 static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
 514 {
 515         unsigned long end = jiffies;
 516
 517         if (end >= start)
 518                 return jiffies_to_msecs(end - start);
 519
 520         return jiffies_to_msecs(end + (ULONG_MAX - start) + 1);
 521 }
 522
 523 int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
 524                                  struct cfg80211_chan_def *chandef);
 525
 526 int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
 527                            const u8 *rates, unsigned int n_rates,
 528                            u32 *mask);
 529
 530 int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
 531                                  enum nl80211_iftype iftype, u32 beacon_int);
 532
 533 void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
 534                                enum nl80211_iftype iftype, int num);
 535
 536 void __cfg80211_leave(struct cfg80211_registered_device *rdev,
 537                       struct wireless_dev *wdev);
 538 void cfg80211_leave(struct cfg80211_registered_device *rdev,
 539                     struct wireless_dev *wdev);
 540
 541 void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
 542                               struct wireless_dev *wdev);
 543
 544 void cfg80211_stop_nan(struct cfg80211_registered_device *rdev,
 545                        struct wireless_dev *wdev);
 546
 547 struct cfg80211_internal_bss *
 548 cfg80211_bss_update(struct cfg80211_registered_device *rdev,
 549                     struct cfg80211_internal_bss *tmp,
 550                     bool signal_valid, unsigned long ts);
 551 #ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
 552 #define CFG80211_DEV_WARN_ON(cond)      WARN_ON(cond)
 553 #else
 554 /*
 555  * Trick to enable using it as a condition,
 556  * and also not give a warning when it's
 557  * not used that way.
 558  */
 559 #define CFG80211_DEV_WARN_ON(cond)      ({bool __r = (cond); __r; })
 560 #endif
 561
 562 void cfg80211_cqm_config_free(struct wireless_dev *wdev);
 563
 564 void cfg80211_release_pmsr(struct wireless_dev *wdev, u32 portid);
 565 void cfg80211_pmsr_wdev_down(struct wireless_dev *wdev);
 566 void cfg80211_pmsr_free_wk(struct work_struct *work);
 567
 568 void cfg80211_remove_link(struct wireless_dev *wdev, unsigned int link_id);
 569 void cfg80211_remove_links(struct wireless_dev *wdev);
 570 int cfg80211_remove_virtual_intf(struct cfg80211_registered_device *rdev,
 571                                  struct wireless_dev *wdev);
 572
 573 #endif /* __NET_WIRELESS_CORE_H */