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>
21 struct cfg80211_registered_device {
22 const struct cfg80211_ops *ops;
23 struct list_head list;
24 /* we hold this mutex during any call so that
25 * we cannot do multiple calls at once, and also
26 * to avoid the deregister call to proceed while
27 * any call is in progress */
31 struct rfkill_ops rfkill_ops;
32 struct rfkill *rfkill;
33 struct work_struct rfkill_sync;
35 /* ISO / IEC 3166 alpha2 for which this device is receiving
36 * country IEs on, this can help disregard country IEs from APs
37 * on the same alpha2 quickly. The alpha2 may differ from
38 * cfg80211_regdomain's alpha2 when an intersection has occurred.
39 * If the AP is reconfigured this can also be used to tell us if
40 * the country on the country IE changed. */
41 char country_ie_alpha2[2];
43 /* If a Country IE has been received this tells us the environment
44 * which its telling us its in. This defaults to ENVIRON_ANY */
45 enum environment_cap env;
47 /* wiphy index, internal only */
50 /* associated wireless interfaces */
51 struct mutex devlist_mtx;
52 /* protected by devlist_mtx or RCU */
53 struct list_head wdev_list;
54 int devlist_generation, wdev_id;
55 int opencount; /* also protected by devlist_mtx */
56 wait_queue_head_t dev_wait;
58 u32 ap_beacons_nlportid;
60 /* protected by RTNL only */
61 int num_running_ifaces;
62 int num_running_monitor_ifaces;
66 struct list_head bss_list;
67 struct rb_root bss_tree;
69 struct cfg80211_scan_request *scan_req; /* protected by RTNL */
70 struct cfg80211_sched_scan_request *sched_scan_req;
71 unsigned long suspend_at;
72 struct work_struct scan_done_wk;
73 struct work_struct sched_scan_results_wk;
75 struct mutex sched_scan_mtx;
77 #ifdef CONFIG_NL80211_TESTMODE
78 struct genl_info *testmode_info;
81 struct work_struct conn_work;
82 struct work_struct event_work;
84 struct cfg80211_wowlan *wowlan;
86 /* must be last because of the way we do wiphy_priv(),
87 * and it should at least be aligned to NETDEV_ALIGN */
88 struct wiphy wiphy __attribute__((__aligned__(NETDEV_ALIGN)));
92 struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy)
95 return container_of(wiphy, struct cfg80211_registered_device, wiphy);
98 /* Note 0 is valid, hence phy0 */
100 bool wiphy_idx_valid(int wiphy_idx)
102 return wiphy_idx >= 0;
106 cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
112 for (i = 0; i < rdev->wowlan->n_patterns; i++)
113 kfree(rdev->wowlan->patterns[i].mask);
114 kfree(rdev->wowlan->patterns);
118 extern struct workqueue_struct *cfg80211_wq;
119 extern struct mutex cfg80211_mutex;
120 extern struct list_head cfg80211_rdev_list;
121 extern int cfg80211_rdev_list_generation;
123 static inline void assert_cfg80211_lock(void)
125 lockdep_assert_held(&cfg80211_mutex);
129 * You can use this to mark a wiphy_idx as not having an associated wiphy.
130 * It guarantees cfg80211_rdev_by_wiphy_idx(wiphy_idx) will return NULL
132 #define WIPHY_IDX_STALE -1
134 struct cfg80211_internal_bss {
135 struct list_head list;
140 bool beacon_ies_allocated;
141 bool proberesp_ies_allocated;
143 /* must be last because of priv member */
144 struct cfg80211_bss pub;
147 static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub)
149 return container_of(pub, struct cfg80211_internal_bss, pub);
152 static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
154 atomic_inc(&bss->hold);
157 static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
159 int r = atomic_dec_return(&bss->hold);
164 struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
165 int get_wiphy_idx(struct wiphy *wiphy);
167 /* requires cfg80211_rdev_mutex to be held! */
168 struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
170 /* identical to cfg80211_get_dev_from_info but only operate on ifindex */
171 extern struct cfg80211_registered_device *
172 cfg80211_get_dev_from_ifindex(struct net *net, int ifindex);
174 int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
177 static inline void cfg80211_lock_rdev(struct cfg80211_registered_device *rdev)
179 mutex_lock(&rdev->mtx);
182 static inline void cfg80211_unlock_rdev(struct cfg80211_registered_device *rdev)
184 BUG_ON(IS_ERR(rdev) || !rdev);
185 mutex_unlock(&rdev->mtx);
188 static inline void wdev_lock(struct wireless_dev *wdev)
191 mutex_lock(&wdev->mtx);
192 __acquire(wdev->mtx);
195 static inline void wdev_unlock(struct wireless_dev *wdev)
198 __release(wdev->mtx);
199 mutex_unlock(&wdev->mtx);
202 #define ASSERT_RDEV_LOCK(rdev) lockdep_assert_held(&(rdev)->mtx)
203 #define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
205 static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
209 return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
210 rdev->num_running_ifaces > 0;
213 enum cfg80211_event_type {
214 EVENT_CONNECT_RESULT,
220 struct cfg80211_event {
221 struct list_head list;
222 enum cfg80211_event_type type;
238 struct cfg80211_bss *bss;
251 struct cfg80211_cached_keys {
252 struct key_params params[6];
253 u8 data[6][WLAN_MAX_KEY_LEN];
257 enum cfg80211_chan_mode {
265 extern void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
267 extern int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
270 void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
272 void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
273 void cfg80211_bss_age(struct cfg80211_registered_device *dev,
274 unsigned long age_secs);
277 int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
278 struct net_device *dev,
279 struct cfg80211_ibss_params *params,
280 struct cfg80211_cached_keys *connkeys);
281 int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
282 struct net_device *dev,
283 struct cfg80211_ibss_params *params,
284 struct cfg80211_cached_keys *connkeys);
285 void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
286 int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
287 struct net_device *dev, bool nowext);
288 int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
289 struct net_device *dev, bool nowext);
290 void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid);
291 int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
292 struct wireless_dev *wdev);
295 extern const struct mesh_config default_mesh_config;
296 extern const struct mesh_setup default_mesh_setup;
297 int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
298 struct net_device *dev,
299 struct mesh_setup *setup,
300 const struct mesh_config *conf);
301 int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
302 struct net_device *dev,
303 struct mesh_setup *setup,
304 const struct mesh_config *conf);
305 int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
306 struct net_device *dev);
307 int cfg80211_set_mesh_freq(struct cfg80211_registered_device *rdev,
308 struct wireless_dev *wdev, int freq,
309 enum nl80211_channel_type channel_type);
312 int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
313 struct net_device *dev);
316 int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
317 struct net_device *dev,
318 struct ieee80211_channel *chan,
319 enum nl80211_auth_type auth_type,
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_auth(struct cfg80211_registered_device *rdev,
326 struct net_device *dev, struct ieee80211_channel *chan,
327 enum nl80211_auth_type auth_type, const u8 *bssid,
328 const u8 *ssid, int ssid_len,
329 const u8 *ie, int ie_len,
330 const u8 *key, int key_len, int key_idx,
331 const u8 *sae_data, int sae_data_len);
332 int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
333 struct net_device *dev,
334 struct ieee80211_channel *chan,
335 const u8 *bssid, const u8 *prev_bssid,
336 const u8 *ssid, int ssid_len,
337 const u8 *ie, int ie_len, bool use_mfp,
338 struct cfg80211_crypto_settings *crypt,
339 u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,
340 struct ieee80211_ht_cap *ht_capa_mask);
341 int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
342 struct net_device *dev, struct ieee80211_channel *chan,
343 const u8 *bssid, const u8 *prev_bssid,
344 const u8 *ssid, int ssid_len,
345 const u8 *ie, int ie_len, bool use_mfp,
346 struct cfg80211_crypto_settings *crypt,
347 u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,
348 struct ieee80211_ht_cap *ht_capa_mask);
349 int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
350 struct net_device *dev, const u8 *bssid,
351 const u8 *ie, int ie_len, u16 reason,
352 bool local_state_change);
353 int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
354 struct net_device *dev, const u8 *bssid,
355 const u8 *ie, int ie_len, u16 reason,
356 bool local_state_change);
357 int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
358 struct net_device *dev, const u8 *bssid,
359 const u8 *ie, int ie_len, u16 reason,
360 bool local_state_change);
361 void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
362 struct net_device *dev);
363 void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
364 const u8 *req_ie, size_t req_ie_len,
365 const u8 *resp_ie, size_t resp_ie_len,
366 u16 status, bool wextev,
367 struct cfg80211_bss *bss);
368 int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
369 u16 frame_type, const u8 *match_data,
371 void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
372 void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
373 int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
374 struct wireless_dev *wdev,
375 struct ieee80211_channel *chan, bool offchan,
376 enum nl80211_channel_type channel_type,
377 bool channel_type_valid, unsigned int wait,
378 const u8 *buf, size_t len, bool no_cck,
379 bool dont_wait_for_ack, u64 *cookie);
380 void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
381 const struct ieee80211_ht_cap *ht_capa_mask);
384 int __cfg80211_connect(struct cfg80211_registered_device *rdev,
385 struct net_device *dev,
386 struct cfg80211_connect_params *connect,
387 struct cfg80211_cached_keys *connkeys,
388 const u8 *prev_bssid);
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 int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
394 struct net_device *dev, u16 reason,
396 int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
397 struct net_device *dev, u16 reason,
399 void __cfg80211_roamed(struct wireless_dev *wdev,
400 struct cfg80211_bss *bss,
401 const u8 *req_ie, size_t req_ie_len,
402 const u8 *resp_ie, size_t resp_ie_len);
403 int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
404 struct wireless_dev *wdev);
406 void cfg80211_conn_work(struct work_struct *work);
407 void cfg80211_sme_failed_assoc(struct wireless_dev *wdev);
408 bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev);
410 /* internal helpers */
411 bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
412 int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
413 struct key_params *params, int key_idx,
414 bool pairwise, const u8 *mac_addr);
415 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
416 size_t ie_len, u16 reason, bool from_ap);
417 void cfg80211_sme_scan_done(struct net_device *dev);
418 void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
419 void cfg80211_sme_disassoc(struct net_device *dev,
420 struct cfg80211_internal_bss *bss);
421 void __cfg80211_scan_done(struct work_struct *wk);
422 void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak);
423 void __cfg80211_sched_scan_results(struct work_struct *wk);
424 int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
425 bool driver_initiated);
426 void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
427 int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
428 struct net_device *dev, enum nl80211_iftype ntype,
429 u32 *flags, struct vif_params *params);
430 void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
431 void cfg80211_process_wdev_events(struct wireless_dev *wdev);
433 int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
434 struct wireless_dev *wdev,
435 enum nl80211_iftype iftype,
436 struct ieee80211_channel *chan,
437 enum cfg80211_chan_mode chanmode);
440 cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
441 struct wireless_dev *wdev,
442 enum nl80211_iftype iftype)
444 return cfg80211_can_use_iftype_chan(rdev, wdev, iftype, NULL,
445 CHAN_MODE_UNDEFINED);
449 cfg80211_can_add_interface(struct cfg80211_registered_device *rdev,
450 enum nl80211_iftype iftype)
452 return cfg80211_can_change_interface(rdev, NULL, iftype);
456 cfg80211_can_use_chan(struct cfg80211_registered_device *rdev,
457 struct wireless_dev *wdev,
458 struct ieee80211_channel *chan,
459 enum cfg80211_chan_mode chanmode)
461 return cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
466 cfg80211_get_chan_state(struct wireless_dev *wdev,
467 struct ieee80211_channel **chan,
468 enum cfg80211_chan_mode *chanmode);
470 struct ieee80211_channel *
471 rdev_freq_to_chan(struct cfg80211_registered_device *rdev,
472 int freq, enum nl80211_channel_type channel_type);
473 int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
474 int freq, enum nl80211_channel_type chantype);
476 int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
477 const u8 *rates, unsigned int n_rates,
480 int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
483 void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
484 enum nl80211_iftype iftype, int num);
486 #define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
488 #ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
489 #define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
492 * Trick to enable using it as a condition,
493 * and also not give a warning when it's
496 #define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
499 #endif /* __NET_WIRELESS_CORE_H */