2 * Wireless configuration interface internals.
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
6 #ifndef __NET_WIRELESS_CORE_H
7 #define __NET_WIRELESS_CORE_H
8 #include <linux/mutex.h>
9 #include <linux/list.h>
10 #include <linux/netdevice.h>
11 #include <linux/rbtree.h>
12 #include <linux/debugfs.h>
13 #include <linux/rfkill.h>
14 #include <linux/workqueue.h>
15 #include <linux/rtnetlink.h>
16 #include <net/genetlink.h>
17 #include <net/cfg80211.h>
21 #define WIPHY_IDX_INVALID -1
23 struct cfg80211_registered_device {
24 const struct cfg80211_ops *ops;
25 struct list_head list;
26 /* we hold this mutex during any call so that
27 * we cannot do multiple calls at once, and also
28 * to avoid the deregister call to proceed while
29 * any call is in progress */
33 struct rfkill_ops rfkill_ops;
34 struct rfkill *rfkill;
35 struct work_struct rfkill_sync;
37 /* ISO / IEC 3166 alpha2 for which this device is receiving
38 * country IEs on, this can help disregard country IEs from APs
39 * on the same alpha2 quickly. The alpha2 may differ from
40 * cfg80211_regdomain's alpha2 when an intersection has occurred.
41 * If the AP is reconfigured this can also be used to tell us if
42 * the country on the country IE changed. */
43 char country_ie_alpha2[2];
45 /* If a Country IE has been received this tells us the environment
46 * which its telling us its in. This defaults to ENVIRON_ANY */
47 enum environment_cap env;
49 /* wiphy index, internal only */
52 /* associated wireless interfaces */
53 struct mutex devlist_mtx;
54 /* protected by devlist_mtx or RCU */
55 struct list_head wdev_list;
56 int devlist_generation, wdev_id;
57 int opencount; /* also protected by devlist_mtx */
58 wait_queue_head_t dev_wait;
60 struct list_head beacon_registrations;
61 spinlock_t beacon_registrations_lock;
63 /* protected by RTNL only */
64 int num_running_ifaces;
65 int num_running_monitor_ifaces;
69 struct list_head bss_list;
70 struct rb_root bss_tree;
72 struct cfg80211_scan_request *scan_req; /* protected by RTNL */
73 struct cfg80211_sched_scan_request *sched_scan_req;
74 unsigned long suspend_at;
75 struct work_struct scan_done_wk;
76 struct work_struct sched_scan_results_wk;
78 struct mutex sched_scan_mtx;
80 #ifdef CONFIG_NL80211_TESTMODE
81 struct genl_info *testmode_info;
84 struct work_struct conn_work;
85 struct work_struct event_work;
87 struct cfg80211_wowlan *wowlan;
89 struct delayed_work dfs_update_channels_wk;
91 /* must be last because of the way we do wiphy_priv(),
92 * and it should at least be aligned to NETDEV_ALIGN */
93 struct wiphy wiphy __aligned(NETDEV_ALIGN);
97 struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy)
100 return container_of(wiphy, struct cfg80211_registered_device, wiphy);
104 cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
110 for (i = 0; i < rdev->wowlan->n_patterns; i++)
111 kfree(rdev->wowlan->patterns[i].mask);
112 kfree(rdev->wowlan->patterns);
113 if (rdev->wowlan->tcp && rdev->wowlan->tcp->sock)
114 sock_release(rdev->wowlan->tcp->sock);
115 kfree(rdev->wowlan->tcp);
119 extern struct workqueue_struct *cfg80211_wq;
120 extern struct mutex cfg80211_mutex;
121 extern struct list_head cfg80211_rdev_list;
122 extern int cfg80211_rdev_list_generation;
124 static inline void assert_cfg80211_lock(void)
126 lockdep_assert_held(&cfg80211_mutex);
129 struct cfg80211_internal_bss {
130 struct list_head list;
131 struct list_head hidden_list;
134 unsigned long refcount;
137 /* must be last because of priv member */
138 struct cfg80211_bss pub;
141 static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub)
143 return container_of(pub, struct cfg80211_internal_bss, pub);
146 static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
148 atomic_inc(&bss->hold);
151 static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
153 int r = atomic_dec_return(&bss->hold);
158 struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
159 int get_wiphy_idx(struct wiphy *wiphy);
161 /* requires cfg80211_rdev_mutex to be held! */
162 struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
164 /* identical to cfg80211_get_dev_from_info but only operate on ifindex */
165 extern struct cfg80211_registered_device *
166 cfg80211_get_dev_from_ifindex(struct net *net, int ifindex);
168 int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
171 static inline void cfg80211_lock_rdev(struct cfg80211_registered_device *rdev)
173 mutex_lock(&rdev->mtx);
176 static inline void cfg80211_unlock_rdev(struct cfg80211_registered_device *rdev)
178 BUG_ON(IS_ERR(rdev) || !rdev);
179 mutex_unlock(&rdev->mtx);
182 static inline void wdev_lock(struct wireless_dev *wdev)
185 mutex_lock(&wdev->mtx);
186 __acquire(wdev->mtx);
189 static inline void wdev_unlock(struct wireless_dev *wdev)
192 __release(wdev->mtx);
193 mutex_unlock(&wdev->mtx);
196 #define ASSERT_RDEV_LOCK(rdev) lockdep_assert_held(&(rdev)->mtx)
197 #define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
199 static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
203 return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
204 rdev->num_running_ifaces > 0;
207 enum cfg80211_event_type {
208 EVENT_CONNECT_RESULT,
214 struct cfg80211_event {
215 struct list_head list;
216 enum cfg80211_event_type type;
232 struct cfg80211_bss *bss;
245 struct cfg80211_cached_keys {
246 struct key_params params[6];
247 u8 data[6][WLAN_MAX_KEY_LEN];
251 enum cfg80211_chan_mode {
257 struct cfg80211_beacon_registration {
258 struct list_head list;
263 extern void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
265 extern int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
268 void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
270 void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
271 void cfg80211_bss_age(struct cfg80211_registered_device *dev,
272 unsigned long age_secs);
275 int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
276 struct net_device *dev,
277 struct cfg80211_ibss_params *params,
278 struct cfg80211_cached_keys *connkeys);
279 int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
280 struct net_device *dev,
281 struct cfg80211_ibss_params *params,
282 struct cfg80211_cached_keys *connkeys);
283 void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
284 int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
285 struct net_device *dev, bool nowext);
286 int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
287 struct net_device *dev, bool nowext);
288 void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid);
289 int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
290 struct wireless_dev *wdev);
293 extern const struct mesh_config default_mesh_config;
294 extern const struct mesh_setup default_mesh_setup;
295 int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
296 struct net_device *dev,
297 struct mesh_setup *setup,
298 const struct mesh_config *conf);
299 int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
300 struct net_device *dev,
301 struct mesh_setup *setup,
302 const struct mesh_config *conf);
303 int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
304 struct net_device *dev);
305 int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
306 struct wireless_dev *wdev,
307 struct cfg80211_chan_def *chandef);
310 int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
311 struct net_device *dev);
314 int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
315 struct net_device *dev,
316 struct ieee80211_channel *chan,
317 enum nl80211_auth_type auth_type,
319 const u8 *ssid, int ssid_len,
320 const u8 *ie, int ie_len,
321 const u8 *key, int key_len, int key_idx,
322 const u8 *sae_data, int sae_data_len);
323 int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
324 struct net_device *dev, struct ieee80211_channel *chan,
325 enum nl80211_auth_type auth_type, const u8 *bssid,
326 const u8 *ssid, int ssid_len,
327 const u8 *ie, int ie_len,
328 const u8 *key, int key_len, int key_idx,
329 const u8 *sae_data, int sae_data_len);
330 int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
331 struct net_device *dev,
332 struct ieee80211_channel *chan,
334 const u8 *ssid, int ssid_len,
335 struct cfg80211_assoc_request *req);
336 int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
337 struct net_device *dev,
338 struct ieee80211_channel *chan,
340 const u8 *ssid, int ssid_len,
341 struct cfg80211_assoc_request *req);
342 int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
343 struct net_device *dev, const u8 *bssid,
344 const u8 *ie, int ie_len, u16 reason,
345 bool local_state_change);
346 int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
347 struct net_device *dev, const u8 *bssid,
348 const u8 *ie, int ie_len, u16 reason,
349 bool local_state_change);
350 int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
351 struct net_device *dev, const u8 *bssid,
352 const u8 *ie, int ie_len, u16 reason,
353 bool local_state_change);
354 void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
355 struct net_device *dev);
356 void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
357 const u8 *req_ie, size_t req_ie_len,
358 const u8 *resp_ie, size_t resp_ie_len,
359 u16 status, bool wextev,
360 struct cfg80211_bss *bss);
361 int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
362 u16 frame_type, const u8 *match_data,
364 void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
365 void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
366 int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
367 struct wireless_dev *wdev,
368 struct ieee80211_channel *chan, bool offchan,
369 unsigned int wait, const u8 *buf, size_t len,
370 bool no_cck, bool dont_wait_for_ack, u64 *cookie);
371 void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
372 const struct ieee80211_ht_cap *ht_capa_mask);
373 void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
374 const struct ieee80211_vht_cap *vht_capa_mask);
377 int __cfg80211_connect(struct cfg80211_registered_device *rdev,
378 struct net_device *dev,
379 struct cfg80211_connect_params *connect,
380 struct cfg80211_cached_keys *connkeys,
381 const u8 *prev_bssid);
382 int cfg80211_connect(struct cfg80211_registered_device *rdev,
383 struct net_device *dev,
384 struct cfg80211_connect_params *connect,
385 struct cfg80211_cached_keys *connkeys);
386 int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
387 struct net_device *dev, u16 reason,
389 int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
390 struct net_device *dev, u16 reason,
392 void __cfg80211_roamed(struct wireless_dev *wdev,
393 struct cfg80211_bss *bss,
394 const u8 *req_ie, size_t req_ie_len,
395 const u8 *resp_ie, size_t resp_ie_len);
396 int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
397 struct wireless_dev *wdev);
399 void cfg80211_conn_work(struct work_struct *work);
400 void cfg80211_sme_failed_assoc(struct wireless_dev *wdev);
401 bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev);
403 /* internal helpers */
404 bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
405 int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
406 struct key_params *params, int key_idx,
407 bool pairwise, const u8 *mac_addr);
408 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
409 size_t ie_len, u16 reason, bool from_ap);
410 void cfg80211_sme_scan_done(struct net_device *dev);
411 void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
412 void cfg80211_sme_disassoc(struct net_device *dev,
413 struct cfg80211_internal_bss *bss);
414 void __cfg80211_scan_done(struct work_struct *wk);
415 void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak);
416 void __cfg80211_sched_scan_results(struct work_struct *wk);
417 int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
418 bool driver_initiated);
419 void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
420 int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
421 struct net_device *dev, enum nl80211_iftype ntype,
422 u32 *flags, struct vif_params *params);
423 void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
424 void cfg80211_process_wdev_events(struct wireless_dev *wdev);
426 int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
427 struct wireless_dev *wdev,
428 enum nl80211_iftype iftype,
429 struct ieee80211_channel *chan,
430 enum cfg80211_chan_mode chanmode,
434 * cfg80211_chandef_dfs_required - checks if radar detection is required
435 * @wiphy: the wiphy to validate against
436 * @chandef: the channel definition to check
437 * Return: 1 if radar detection is required, 0 if it is not, < 0 on error
439 int cfg80211_chandef_dfs_required(struct wiphy *wiphy,
440 const struct cfg80211_chan_def *c);
442 void cfg80211_set_dfs_state(struct wiphy *wiphy,
443 const struct cfg80211_chan_def *chandef,
444 enum nl80211_dfs_state dfs_state);
446 void cfg80211_dfs_channels_update_work(struct work_struct *work);
450 cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
451 struct wireless_dev *wdev,
452 enum nl80211_iftype iftype)
454 return cfg80211_can_use_iftype_chan(rdev, wdev, iftype, NULL,
455 CHAN_MODE_UNDEFINED, 0);
459 cfg80211_can_add_interface(struct cfg80211_registered_device *rdev,
460 enum nl80211_iftype iftype)
462 return cfg80211_can_change_interface(rdev, NULL, iftype);
466 cfg80211_can_use_chan(struct cfg80211_registered_device *rdev,
467 struct wireless_dev *wdev,
468 struct ieee80211_channel *chan,
469 enum cfg80211_chan_mode chanmode)
471 return cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
475 static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
477 unsigned long end = jiffies;
480 return jiffies_to_msecs(end - start);
482 return jiffies_to_msecs(end + (MAX_JIFFY_OFFSET - start) + 1);
486 cfg80211_get_chan_state(struct wireless_dev *wdev,
487 struct ieee80211_channel **chan,
488 enum cfg80211_chan_mode *chanmode);
490 int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
491 struct cfg80211_chan_def *chandef);
493 int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
494 const u8 *rates, unsigned int n_rates,
497 int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
500 void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
501 enum nl80211_iftype iftype, int num);
503 void cfg80211_leave(struct cfg80211_registered_device *rdev,
504 struct wireless_dev *wdev);
506 void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
507 struct wireless_dev *wdev);
509 #define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
511 #ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
512 #define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
515 * Trick to enable using it as a condition,
516 * and also not give a warning when it's
519 #define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
522 #endif /* __NET_WIRELESS_CORE_H */