1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Wireless configuration interface internals.
5 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
6 * Copyright (C) 2018 Intel Corporation
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>
22 #define WIPHY_IDX_INVALID -1
24 struct cfg80211_registered_device {
25 const struct cfg80211_ops *ops;
26 struct list_head list;
29 struct rfkill_ops rfkill_ops;
30 struct rfkill *rfkill;
31 struct work_struct rfkill_sync;
33 /* ISO / IEC 3166 alpha2 for which this device is receiving
34 * country IEs on, this can help disregard country IEs from APs
35 * on the same alpha2 quickly. The alpha2 may differ from
36 * cfg80211_regdomain's alpha2 when an intersection has occurred.
37 * If the AP is reconfigured this can also be used to tell us if
38 * the country on the country IE changed. */
39 char country_ie_alpha2[2];
42 * the driver requests the regulatory core to set this regulatory
43 * domain as the wiphy's. Only used for %REGULATORY_WIPHY_SELF_MANAGED
44 * devices using the regulatory_set_wiphy_regd() API
46 const struct ieee80211_regdomain *requested_regd;
48 /* If a Country IE has been received this tells us the environment
49 * which its telling us its in. This defaults to ENVIRON_ANY */
50 enum environment_cap env;
52 /* wiphy index, internal only */
55 /* protected by RTNL */
56 int devlist_generation, wdev_id;
58 wait_queue_head_t dev_wait;
60 struct list_head beacon_registrations;
61 spinlock_t beacon_registrations_lock;
63 struct list_head mlme_unreg;
64 spinlock_t mlme_unreg_lock;
65 struct work_struct mlme_unreg_wk;
67 /* protected by RTNL only */
68 int num_running_ifaces;
69 int num_running_monitor_ifaces;
74 struct list_head bss_list;
75 struct rb_root bss_tree;
78 struct cfg80211_scan_request *scan_req; /* protected by RTNL */
79 struct sk_buff *scan_msg;
80 struct list_head sched_scan_req_list;
82 struct work_struct scan_done_wk;
84 struct genl_info *cur_cmd_info;
86 struct work_struct conn_work;
87 struct work_struct event_work;
89 struct delayed_work dfs_update_channels_wk;
91 /* netlink port which started critical protocol (0 means not started) */
92 u32 crit_proto_nlportid;
94 struct cfg80211_coalesce *coalesce;
96 struct work_struct destroy_work;
97 struct work_struct sched_scan_stop_wk;
98 struct work_struct sched_scan_res_wk;
100 struct cfg80211_chan_def radar_chandef;
101 struct work_struct propagate_radar_detect_wk;
103 struct cfg80211_chan_def cac_done_chandef;
104 struct work_struct propagate_cac_done_wk;
106 /* must be last because of the way we do wiphy_priv(),
107 * and it should at least be aligned to NETDEV_ALIGN */
108 struct wiphy wiphy __aligned(NETDEV_ALIGN);
112 struct cfg80211_registered_device *wiphy_to_rdev(struct wiphy *wiphy)
115 return container_of(wiphy, struct cfg80211_registered_device, wiphy);
119 cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
124 if (!rdev->wiphy.wowlan_config)
126 for (i = 0; i < rdev->wiphy.wowlan_config->n_patterns; i++)
127 kfree(rdev->wiphy.wowlan_config->patterns[i].mask);
128 kfree(rdev->wiphy.wowlan_config->patterns);
129 if (rdev->wiphy.wowlan_config->tcp &&
130 rdev->wiphy.wowlan_config->tcp->sock)
131 sock_release(rdev->wiphy.wowlan_config->tcp->sock);
132 kfree(rdev->wiphy.wowlan_config->tcp);
133 kfree(rdev->wiphy.wowlan_config->nd_config);
134 kfree(rdev->wiphy.wowlan_config);
138 static inline u64 cfg80211_assign_cookie(struct cfg80211_registered_device *rdev)
140 u64 r = ++rdev->cookie_counter;
143 r = ++rdev->cookie_counter;
148 extern struct workqueue_struct *cfg80211_wq;
149 extern struct list_head cfg80211_rdev_list;
150 extern int cfg80211_rdev_list_generation;
152 struct cfg80211_internal_bss {
153 struct list_head list;
154 struct list_head hidden_list;
158 unsigned long refcount;
161 /* time at the start of the reception of the first octet of the
162 * timestamp field of the last beacon/probe received for this BSS.
163 * The time is the TSF of the BSS specified by %parent_bssid.
167 /* the BSS according to which %parent_tsf is set. This is set to
168 * the BSS that the interface that requested the scan was connected to
169 * when the beacon/probe was received.
171 u8 parent_bssid[ETH_ALEN] __aligned(2);
173 /* must be last because of priv member */
174 struct cfg80211_bss pub;
177 static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub)
179 return container_of(pub, struct cfg80211_internal_bss, pub);
182 static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
184 atomic_inc(&bss->hold);
187 static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
189 int r = atomic_dec_return(&bss->hold);
194 struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
195 int get_wiphy_idx(struct wiphy *wiphy);
197 struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
199 int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
202 void cfg80211_init_wdev(struct cfg80211_registered_device *rdev,
203 struct wireless_dev *wdev);
205 static inline void wdev_lock(struct wireless_dev *wdev)
208 mutex_lock(&wdev->mtx);
209 __acquire(wdev->mtx);
212 static inline void wdev_unlock(struct wireless_dev *wdev)
215 __release(wdev->mtx);
216 mutex_unlock(&wdev->mtx);
219 #define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
221 static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
225 return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
226 rdev->num_running_ifaces > 0;
229 enum cfg80211_event_type {
230 EVENT_CONNECT_RESULT,
235 EVENT_PORT_AUTHORIZED,
238 struct cfg80211_event {
239 struct list_head list;
240 enum cfg80211_event_type type;
243 struct cfg80211_connect_resp_params cr;
244 struct cfg80211_roam_info rm;
249 bool locally_generated;
253 struct ieee80211_channel *channel;
261 struct cfg80211_cached_keys {
262 struct key_params params[CFG80211_MAX_WEP_KEYS];
263 u8 data[CFG80211_MAX_WEP_KEYS][WLAN_KEY_LEN_WEP104];
267 enum cfg80211_chan_mode {
273 struct cfg80211_beacon_registration {
274 struct list_head list;
278 struct cfg80211_cqm_config {
280 s32 last_rssi_event_value;
281 int n_rssi_thresholds;
282 s32 rssi_thresholds[0];
285 void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev);
288 void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
290 int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
293 void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
295 void cfg80211_bss_expire(struct cfg80211_registered_device *rdev);
296 void cfg80211_bss_age(struct cfg80211_registered_device *rdev,
297 unsigned long age_secs);
300 int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
301 struct net_device *dev,
302 struct cfg80211_ibss_params *params,
303 struct cfg80211_cached_keys *connkeys);
304 void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
305 int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
306 struct net_device *dev, bool nowext);
307 int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
308 struct net_device *dev, bool nowext);
309 void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid,
310 struct ieee80211_channel *channel);
311 int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
312 struct wireless_dev *wdev);
315 extern const struct mesh_config default_mesh_config;
316 extern const struct mesh_setup default_mesh_setup;
317 int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
318 struct net_device *dev,
319 struct mesh_setup *setup,
320 const struct mesh_config *conf);
321 int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
322 struct net_device *dev);
323 int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
324 struct net_device *dev);
325 int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
326 struct wireless_dev *wdev,
327 struct cfg80211_chan_def *chandef);
330 int __cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
331 struct net_device *dev,
332 struct ocb_setup *setup);
333 int cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
334 struct net_device *dev,
335 struct ocb_setup *setup);
336 int __cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
337 struct net_device *dev);
338 int cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
339 struct net_device *dev);
342 int __cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
343 struct net_device *dev, bool notify);
344 int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
345 struct net_device *dev, bool notify);
348 int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
349 struct net_device *dev,
350 struct ieee80211_channel *chan,
351 enum nl80211_auth_type auth_type,
353 const u8 *ssid, int ssid_len,
354 const u8 *ie, int ie_len,
355 const u8 *key, int key_len, int key_idx,
356 const u8 *auth_data, int auth_data_len);
357 int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
358 struct net_device *dev,
359 struct ieee80211_channel *chan,
361 const u8 *ssid, int ssid_len,
362 struct cfg80211_assoc_request *req);
363 int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
364 struct net_device *dev, const u8 *bssid,
365 const u8 *ie, int ie_len, u16 reason,
366 bool local_state_change);
367 int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
368 struct net_device *dev, const u8 *bssid,
369 const u8 *ie, int ie_len, u16 reason,
370 bool local_state_change);
371 void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
372 struct net_device *dev);
373 int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
374 u16 frame_type, const u8 *match_data,
376 void cfg80211_mlme_unreg_wk(struct work_struct *wk);
377 void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
378 void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
379 int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
380 struct wireless_dev *wdev,
381 struct cfg80211_mgmt_tx_params *params,
383 void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
384 const struct ieee80211_ht_cap *ht_capa_mask);
385 void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
386 const struct ieee80211_vht_cap *vht_capa_mask);
389 int cfg80211_connect(struct cfg80211_registered_device *rdev,
390 struct net_device *dev,
391 struct cfg80211_connect_params *connect,
392 struct cfg80211_cached_keys *connkeys,
393 const u8 *prev_bssid);
394 void __cfg80211_connect_result(struct net_device *dev,
395 struct cfg80211_connect_resp_params *params,
397 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
398 size_t ie_len, u16 reason, bool from_ap);
399 int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
400 struct net_device *dev, u16 reason,
402 void __cfg80211_roamed(struct wireless_dev *wdev,
403 struct cfg80211_roam_info *info);
404 void __cfg80211_port_authorized(struct wireless_dev *wdev, const u8 *bssid);
405 int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
406 struct wireless_dev *wdev);
407 void cfg80211_autodisconnect_wk(struct work_struct *work);
409 /* SME implementation */
410 void cfg80211_conn_work(struct work_struct *work);
411 void cfg80211_sme_scan_done(struct net_device *dev);
412 bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status);
413 void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len);
414 void cfg80211_sme_disassoc(struct wireless_dev *wdev);
415 void cfg80211_sme_deauth(struct wireless_dev *wdev);
416 void cfg80211_sme_auth_timeout(struct wireless_dev *wdev);
417 void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev);
418 void cfg80211_sme_abandon_assoc(struct wireless_dev *wdev);
420 /* internal helpers */
421 bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
422 int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
423 struct key_params *params, int key_idx,
424 bool pairwise, const u8 *mac_addr);
425 void __cfg80211_scan_done(struct work_struct *wk);
426 void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,
428 void cfg80211_add_sched_scan_req(struct cfg80211_registered_device *rdev,
429 struct cfg80211_sched_scan_request *req);
430 int cfg80211_sched_scan_req_possible(struct cfg80211_registered_device *rdev,
432 void cfg80211_sched_scan_results_wk(struct work_struct *work);
433 int cfg80211_stop_sched_scan_req(struct cfg80211_registered_device *rdev,
434 struct cfg80211_sched_scan_request *req,
435 bool driver_initiated);
436 int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
437 u64 reqid, bool driver_initiated);
438 void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
439 int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
440 struct net_device *dev, enum nl80211_iftype ntype,
441 struct vif_params *params);
442 void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
443 void cfg80211_process_wdev_events(struct wireless_dev *wdev);
445 bool cfg80211_does_bw_fit_range(const struct ieee80211_freq_range *freq_range,
446 u32 center_freq_khz, u32 bw_khz);
449 * cfg80211_chandef_dfs_usable - checks if chandef is DFS usable
450 * @wiphy: the wiphy to validate against
451 * @chandef: the channel definition to check
453 * Checks if chandef is usable and we can/need start CAC on such channel.
455 * Return: Return true if all channels available and at least
456 * one channel require CAC (NL80211_DFS_USABLE)
458 bool cfg80211_chandef_dfs_usable(struct wiphy *wiphy,
459 const struct cfg80211_chan_def *chandef);
461 void cfg80211_set_dfs_state(struct wiphy *wiphy,
462 const struct cfg80211_chan_def *chandef,
463 enum nl80211_dfs_state dfs_state);
465 void cfg80211_dfs_channels_update_work(struct work_struct *work);
468 cfg80211_chandef_dfs_cac_time(struct wiphy *wiphy,
469 const struct cfg80211_chan_def *chandef);
471 void cfg80211_sched_dfs_chan_update(struct cfg80211_registered_device *rdev);
473 bool cfg80211_any_wiphy_oper_chan(struct wiphy *wiphy,
474 struct ieee80211_channel *chan);
476 bool cfg80211_beaconing_iface_active(struct wireless_dev *wdev);
478 bool cfg80211_is_sub_chan(struct cfg80211_chan_def *chandef,
479 struct ieee80211_channel *chan);
481 static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
483 unsigned long end = jiffies;
486 return jiffies_to_msecs(end - start);
488 return jiffies_to_msecs(end + (ULONG_MAX - start) + 1);
492 cfg80211_get_chan_state(struct wireless_dev *wdev,
493 struct ieee80211_channel **chan,
494 enum cfg80211_chan_mode *chanmode,
497 int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
498 struct cfg80211_chan_def *chandef);
500 int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
501 const u8 *rates, unsigned int n_rates,
504 int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
505 enum nl80211_iftype iftype, u32 beacon_int);
507 void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
508 enum nl80211_iftype iftype, int num);
510 void __cfg80211_leave(struct cfg80211_registered_device *rdev,
511 struct wireless_dev *wdev);
512 void cfg80211_leave(struct cfg80211_registered_device *rdev,
513 struct wireless_dev *wdev);
515 void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
516 struct wireless_dev *wdev);
518 void cfg80211_stop_nan(struct cfg80211_registered_device *rdev,
519 struct wireless_dev *wdev);
521 #ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
522 #define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
525 * Trick to enable using it as a condition,
526 * and also not give a warning when it's
529 #define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
532 void cfg80211_cqm_config_free(struct wireless_dev *wdev);
534 void cfg80211_release_pmsr(struct wireless_dev *wdev, u32 portid);
535 void cfg80211_pmsr_wdev_down(struct wireless_dev *wdev);
536 void cfg80211_pmsr_free_wk(struct work_struct *work);
538 #endif /* __NET_WIRELESS_CORE_H */