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/kref.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;
27 /* we hold this mutex during any call so that
28 * we cannot do multiple calls at once, and also
29 * to avoid the deregister call to proceed while
30 * any call is in progress */
34 struct rfkill_ops rfkill_ops;
35 struct rfkill *rfkill;
36 struct work_struct rfkill_sync;
38 /* ISO / IEC 3166 alpha2 for which this device is receiving
39 * country IEs on, this can help disregard country IEs from APs
40 * on the same alpha2 quickly. The alpha2 may differ from
41 * cfg80211_regdomain's alpha2 when an intersection has occurred.
42 * If the AP is reconfigured this can also be used to tell us if
43 * the country on the country IE changed. */
44 char country_ie_alpha2[2];
46 /* If a Country IE has been received this tells us the environment
47 * which its telling us its in. This defaults to ENVIRON_ANY */
48 enum environment_cap env;
50 /* wiphy index, internal only */
53 /* associated wireless interfaces */
54 struct mutex devlist_mtx;
55 /* protected by devlist_mtx or RCU */
56 struct list_head wdev_list;
57 int devlist_generation, wdev_id;
58 int opencount; /* also protected by devlist_mtx */
59 wait_queue_head_t dev_wait;
61 struct list_head beacon_registrations;
62 spinlock_t beacon_registrations_lock;
64 /* protected by RTNL only */
65 int num_running_ifaces;
66 int num_running_monitor_ifaces;
70 struct list_head bss_list;
71 struct rb_root bss_tree;
73 struct cfg80211_scan_request *scan_req; /* protected by RTNL */
74 struct cfg80211_sched_scan_request *sched_scan_req;
75 unsigned long suspend_at;
76 struct work_struct scan_done_wk;
77 struct work_struct sched_scan_results_wk;
79 struct mutex sched_scan_mtx;
81 #ifdef CONFIG_NL80211_TESTMODE
82 struct genl_info *testmode_info;
85 struct work_struct conn_work;
86 struct work_struct event_work;
88 struct cfg80211_wowlan *wowlan;
90 /* must be last because of the way we do wiphy_priv(),
91 * and it should at least be aligned to NETDEV_ALIGN */
92 struct wiphy wiphy __aligned(NETDEV_ALIGN);
96 struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy)
99 return container_of(wiphy, struct cfg80211_registered_device, wiphy);
103 cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
109 for (i = 0; i < rdev->wowlan->n_patterns; i++)
110 kfree(rdev->wowlan->patterns[i].mask);
111 kfree(rdev->wowlan->patterns);
115 extern struct workqueue_struct *cfg80211_wq;
116 extern struct mutex cfg80211_mutex;
117 extern struct list_head cfg80211_rdev_list;
118 extern int cfg80211_rdev_list_generation;
120 static inline void assert_cfg80211_lock(void)
122 lockdep_assert_held(&cfg80211_mutex);
125 struct cfg80211_internal_bss {
126 struct list_head list;
132 /* must be last because of priv member */
133 struct cfg80211_bss pub;
136 static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub)
138 return container_of(pub, struct cfg80211_internal_bss, pub);
141 static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
143 atomic_inc(&bss->hold);
146 static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
148 int r = atomic_dec_return(&bss->hold);
153 struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
154 int get_wiphy_idx(struct wiphy *wiphy);
156 /* requires cfg80211_rdev_mutex to be held! */
157 struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
159 /* identical to cfg80211_get_dev_from_info but only operate on ifindex */
160 extern struct cfg80211_registered_device *
161 cfg80211_get_dev_from_ifindex(struct net *net, int ifindex);
163 int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
166 static inline void cfg80211_lock_rdev(struct cfg80211_registered_device *rdev)
168 mutex_lock(&rdev->mtx);
171 static inline void cfg80211_unlock_rdev(struct cfg80211_registered_device *rdev)
173 BUG_ON(IS_ERR(rdev) || !rdev);
174 mutex_unlock(&rdev->mtx);
177 static inline void wdev_lock(struct wireless_dev *wdev)
180 mutex_lock(&wdev->mtx);
181 __acquire(wdev->mtx);
184 static inline void wdev_unlock(struct wireless_dev *wdev)
187 __release(wdev->mtx);
188 mutex_unlock(&wdev->mtx);
191 #define ASSERT_RDEV_LOCK(rdev) lockdep_assert_held(&(rdev)->mtx)
192 #define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
194 static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
198 return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
199 rdev->num_running_ifaces > 0;
202 enum cfg80211_event_type {
203 EVENT_CONNECT_RESULT,
209 struct cfg80211_event {
210 struct list_head list;
211 enum cfg80211_event_type type;
227 struct cfg80211_bss *bss;
240 struct cfg80211_cached_keys {
241 struct key_params params[6];
242 u8 data[6][WLAN_MAX_KEY_LEN];
246 enum cfg80211_chan_mode {
252 struct cfg80211_beacon_registration {
253 struct list_head list;
258 extern void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
260 extern int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
263 void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
265 void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
266 void cfg80211_bss_age(struct cfg80211_registered_device *dev,
267 unsigned long age_secs);
270 int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
271 struct net_device *dev,
272 struct cfg80211_ibss_params *params,
273 struct cfg80211_cached_keys *connkeys);
274 int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
275 struct net_device *dev,
276 struct cfg80211_ibss_params *params,
277 struct cfg80211_cached_keys *connkeys);
278 void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
279 int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
280 struct net_device *dev, bool nowext);
281 int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
282 struct net_device *dev, bool nowext);
283 void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid);
284 int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
285 struct wireless_dev *wdev);
288 extern const struct mesh_config default_mesh_config;
289 extern const struct mesh_setup default_mesh_setup;
290 int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
291 struct net_device *dev,
292 struct mesh_setup *setup,
293 const struct mesh_config *conf);
294 int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
295 struct net_device *dev,
296 struct mesh_setup *setup,
297 const struct mesh_config *conf);
298 int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
299 struct net_device *dev);
300 int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
301 struct wireless_dev *wdev,
302 struct cfg80211_chan_def *chandef);
305 int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
306 struct net_device *dev);
309 int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
310 struct net_device *dev,
311 struct ieee80211_channel *chan,
312 enum nl80211_auth_type auth_type,
314 const u8 *ssid, int ssid_len,
315 const u8 *ie, int ie_len,
316 const u8 *key, int key_len, int key_idx,
317 const u8 *sae_data, int sae_data_len);
318 int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
319 struct net_device *dev, struct ieee80211_channel *chan,
320 enum nl80211_auth_type auth_type, const u8 *bssid,
321 const u8 *ssid, int ssid_len,
322 const u8 *ie, int ie_len,
323 const u8 *key, int key_len, int key_idx,
324 const u8 *sae_data, int sae_data_len);
325 int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
326 struct net_device *dev,
327 struct ieee80211_channel *chan,
328 const u8 *bssid, const u8 *prev_bssid,
329 const u8 *ssid, int ssid_len,
330 const u8 *ie, int ie_len, bool use_mfp,
331 struct cfg80211_crypto_settings *crypt,
332 u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,
333 struct ieee80211_ht_cap *ht_capa_mask);
334 int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
335 struct net_device *dev, struct ieee80211_channel *chan,
336 const u8 *bssid, const u8 *prev_bssid,
337 const u8 *ssid, int ssid_len,
338 const u8 *ie, int ie_len, bool use_mfp,
339 struct cfg80211_crypto_settings *crypt,
340 u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,
341 struct ieee80211_ht_cap *ht_capa_mask);
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);
375 int __cfg80211_connect(struct cfg80211_registered_device *rdev,
376 struct net_device *dev,
377 struct cfg80211_connect_params *connect,
378 struct cfg80211_cached_keys *connkeys,
379 const u8 *prev_bssid);
380 int cfg80211_connect(struct cfg80211_registered_device *rdev,
381 struct net_device *dev,
382 struct cfg80211_connect_params *connect,
383 struct cfg80211_cached_keys *connkeys);
384 int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
385 struct net_device *dev, u16 reason,
387 int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
388 struct net_device *dev, u16 reason,
390 void __cfg80211_roamed(struct wireless_dev *wdev,
391 struct cfg80211_bss *bss,
392 const u8 *req_ie, size_t req_ie_len,
393 const u8 *resp_ie, size_t resp_ie_len);
394 int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
395 struct wireless_dev *wdev);
397 void cfg80211_conn_work(struct work_struct *work);
398 void cfg80211_sme_failed_assoc(struct wireless_dev *wdev);
399 bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev);
401 /* internal helpers */
402 bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
403 int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
404 struct key_params *params, int key_idx,
405 bool pairwise, const u8 *mac_addr);
406 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
407 size_t ie_len, u16 reason, bool from_ap);
408 void cfg80211_sme_scan_done(struct net_device *dev);
409 void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
410 void cfg80211_sme_disassoc(struct net_device *dev,
411 struct cfg80211_internal_bss *bss);
412 void __cfg80211_scan_done(struct work_struct *wk);
413 void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak);
414 void __cfg80211_sched_scan_results(struct work_struct *wk);
415 int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
416 bool driver_initiated);
417 void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
418 int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
419 struct net_device *dev, enum nl80211_iftype ntype,
420 u32 *flags, struct vif_params *params);
421 void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
422 void cfg80211_process_wdev_events(struct wireless_dev *wdev);
424 int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
425 struct wireless_dev *wdev,
426 enum nl80211_iftype iftype,
427 struct ieee80211_channel *chan,
428 enum cfg80211_chan_mode chanmode,
432 cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
433 struct wireless_dev *wdev,
434 enum nl80211_iftype iftype)
436 return cfg80211_can_use_iftype_chan(rdev, wdev, iftype, NULL,
437 CHAN_MODE_UNDEFINED, 0);
441 cfg80211_can_add_interface(struct cfg80211_registered_device *rdev,
442 enum nl80211_iftype iftype)
444 return cfg80211_can_change_interface(rdev, NULL, iftype);
448 cfg80211_can_use_chan(struct cfg80211_registered_device *rdev,
449 struct wireless_dev *wdev,
450 struct ieee80211_channel *chan,
451 enum cfg80211_chan_mode chanmode)
453 return cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
458 cfg80211_get_chan_state(struct wireless_dev *wdev,
459 struct ieee80211_channel **chan,
460 enum cfg80211_chan_mode *chanmode);
462 int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
463 struct cfg80211_chan_def *chandef);
465 int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
466 const u8 *rates, unsigned int n_rates,
469 int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
472 void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
473 enum nl80211_iftype iftype, int num);
475 #define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
477 #ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
478 #define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
481 * Trick to enable using it as a condition,
482 * and also not give a warning when it's
485 #define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
488 #endif /* __NET_WIRELESS_CORE_H */