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;
60 /* protected by RTNL only */
61 int num_running_ifaces;
62 int num_running_monitor_ifaces;
64 struct ieee80211_channel *monitor_channel;
65 enum nl80211_channel_type monitor_channel_type;
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 /* must be last because of the way we do wiphy_priv(),
90 * and it should at least be aligned to NETDEV_ALIGN */
91 struct wiphy wiphy __attribute__((__aligned__(NETDEV_ALIGN)));
95 struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy)
98 return container_of(wiphy, struct cfg80211_registered_device, wiphy);
101 /* Note 0 is valid, hence phy0 */
103 bool wiphy_idx_valid(int wiphy_idx)
105 return wiphy_idx >= 0;
109 cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
115 for (i = 0; i < rdev->wowlan->n_patterns; i++)
116 kfree(rdev->wowlan->patterns[i].mask);
117 kfree(rdev->wowlan->patterns);
121 extern struct workqueue_struct *cfg80211_wq;
122 extern struct mutex cfg80211_mutex;
123 extern struct list_head cfg80211_rdev_list;
124 extern int cfg80211_rdev_list_generation;
126 static inline void assert_cfg80211_lock(void)
128 lockdep_assert_held(&cfg80211_mutex);
132 * You can use this to mark a wiphy_idx as not having an associated wiphy.
133 * It guarantees cfg80211_rdev_by_wiphy_idx(wiphy_idx) will return NULL
135 #define WIPHY_IDX_STALE -1
137 struct cfg80211_internal_bss {
138 struct list_head list;
143 bool beacon_ies_allocated;
144 bool proberesp_ies_allocated;
146 /* must be last because of priv member */
147 struct cfg80211_bss pub;
150 static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub)
152 return container_of(pub, struct cfg80211_internal_bss, pub);
155 static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
157 atomic_inc(&bss->hold);
160 static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
162 int r = atomic_dec_return(&bss->hold);
167 struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
168 int get_wiphy_idx(struct wiphy *wiphy);
170 /* requires cfg80211_rdev_mutex to be held! */
171 struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
173 /* identical to cfg80211_get_dev_from_info but only operate on ifindex */
174 extern struct cfg80211_registered_device *
175 cfg80211_get_dev_from_ifindex(struct net *net, int ifindex);
177 int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
180 static inline void cfg80211_lock_rdev(struct cfg80211_registered_device *rdev)
182 mutex_lock(&rdev->mtx);
185 static inline void cfg80211_unlock_rdev(struct cfg80211_registered_device *rdev)
187 BUG_ON(IS_ERR(rdev) || !rdev);
188 mutex_unlock(&rdev->mtx);
191 static inline void wdev_lock(struct wireless_dev *wdev)
194 mutex_lock(&wdev->mtx);
195 __acquire(wdev->mtx);
198 static inline void wdev_unlock(struct wireless_dev *wdev)
201 __release(wdev->mtx);
202 mutex_unlock(&wdev->mtx);
205 #define ASSERT_RDEV_LOCK(rdev) lockdep_assert_held(&(rdev)->mtx)
206 #define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
208 static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
212 return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
213 rdev->num_running_ifaces > 0;
216 enum cfg80211_event_type {
217 EVENT_CONNECT_RESULT,
223 struct cfg80211_event {
224 struct list_head list;
225 enum cfg80211_event_type type;
241 struct cfg80211_bss *bss;
254 struct cfg80211_cached_keys {
255 struct key_params params[6];
256 u8 data[6][WLAN_MAX_KEY_LEN];
260 enum cfg80211_chan_mode {
268 extern void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
270 extern int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
273 void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
275 void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
276 void cfg80211_bss_age(struct cfg80211_registered_device *dev,
277 unsigned long age_secs);
280 int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
281 struct net_device *dev,
282 struct cfg80211_ibss_params *params,
283 struct cfg80211_cached_keys *connkeys);
284 int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
285 struct net_device *dev,
286 struct cfg80211_ibss_params *params,
287 struct cfg80211_cached_keys *connkeys);
288 void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
289 int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
290 struct net_device *dev, bool nowext);
291 int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
292 struct net_device *dev, bool nowext);
293 void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid);
294 int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
295 struct wireless_dev *wdev);
298 extern const struct mesh_config default_mesh_config;
299 extern const struct mesh_setup default_mesh_setup;
300 int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
301 struct net_device *dev,
302 struct mesh_setup *setup,
303 const struct mesh_config *conf);
304 int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
305 struct net_device *dev,
306 struct mesh_setup *setup,
307 const struct mesh_config *conf);
308 int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
309 struct net_device *dev);
310 int cfg80211_set_mesh_freq(struct cfg80211_registered_device *rdev,
311 struct wireless_dev *wdev, int freq,
312 enum nl80211_channel_type channel_type);
315 int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
316 struct net_device *dev);
319 int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
320 struct net_device *dev,
321 struct ieee80211_channel *chan,
322 enum nl80211_auth_type auth_type,
324 const u8 *ssid, int ssid_len,
325 const u8 *ie, int ie_len,
326 const u8 *key, int key_len, int key_idx);
327 int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
328 struct net_device *dev, struct ieee80211_channel *chan,
329 enum nl80211_auth_type auth_type, const u8 *bssid,
330 const u8 *ssid, int ssid_len,
331 const u8 *ie, int ie_len,
332 const u8 *key, int key_len, int key_idx);
333 int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
334 struct net_device *dev,
335 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_assoc(struct cfg80211_registered_device *rdev,
343 struct net_device *dev, struct ieee80211_channel *chan,
344 const u8 *bssid, const u8 *prev_bssid,
345 const u8 *ssid, int ssid_len,
346 const u8 *ie, int ie_len, bool use_mfp,
347 struct cfg80211_crypto_settings *crypt,
348 u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,
349 struct ieee80211_ht_cap *ht_capa_mask);
350 int __cfg80211_mlme_deauth(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 int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
355 struct net_device *dev, const u8 *bssid,
356 const u8 *ie, int ie_len, u16 reason,
357 bool local_state_change);
358 int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
359 struct net_device *dev, const u8 *bssid,
360 const u8 *ie, int ie_len, u16 reason,
361 bool local_state_change);
362 void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
363 struct net_device *dev);
364 void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
365 const u8 *req_ie, size_t req_ie_len,
366 const u8 *resp_ie, size_t resp_ie_len,
367 u16 status, bool wextev,
368 struct cfg80211_bss *bss);
369 int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
370 u16 frame_type, const u8 *match_data,
372 void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
373 void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
374 int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
375 struct net_device *dev,
376 struct ieee80211_channel *chan, bool offchan,
377 enum nl80211_channel_type channel_type,
378 bool channel_type_valid, unsigned int wait,
379 const u8 *buf, size_t len, bool no_cck,
380 bool dont_wait_for_ack, u64 *cookie);
381 void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
382 const struct ieee80211_ht_cap *ht_capa_mask);
385 int __cfg80211_connect(struct cfg80211_registered_device *rdev,
386 struct net_device *dev,
387 struct cfg80211_connect_params *connect,
388 struct cfg80211_cached_keys *connkeys,
389 const u8 *prev_bssid);
390 int cfg80211_connect(struct cfg80211_registered_device *rdev,
391 struct net_device *dev,
392 struct cfg80211_connect_params *connect,
393 struct cfg80211_cached_keys *connkeys);
394 int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
395 struct net_device *dev, u16 reason,
397 int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
398 struct net_device *dev, u16 reason,
400 void __cfg80211_roamed(struct wireless_dev *wdev,
401 struct cfg80211_bss *bss,
402 const u8 *req_ie, size_t req_ie_len,
403 const u8 *resp_ie, size_t resp_ie_len);
404 int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
405 struct wireless_dev *wdev);
407 void cfg80211_conn_work(struct work_struct *work);
408 void cfg80211_sme_failed_assoc(struct wireless_dev *wdev);
409 bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev);
411 /* internal helpers */
412 bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
413 int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
414 struct key_params *params, int key_idx,
415 bool pairwise, const u8 *mac_addr);
416 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
417 size_t ie_len, u16 reason, bool from_ap);
418 void cfg80211_sme_scan_done(struct net_device *dev);
419 void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
420 void cfg80211_sme_disassoc(struct net_device *dev,
421 struct cfg80211_internal_bss *bss);
422 void __cfg80211_scan_done(struct work_struct *wk);
423 void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak);
424 void __cfg80211_sched_scan_results(struct work_struct *wk);
425 int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
426 bool driver_initiated);
427 void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
428 int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
429 struct net_device *dev, enum nl80211_iftype ntype,
430 u32 *flags, struct vif_params *params);
431 void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
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 cfg80211_registered_device *rdev,
467 struct wireless_dev *wdev,
468 struct ieee80211_channel **chan,
469 enum cfg80211_chan_mode *chanmode);
471 struct ieee80211_channel *
472 rdev_freq_to_chan(struct cfg80211_registered_device *rdev,
473 int freq, enum nl80211_channel_type channel_type);
474 int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
475 int freq, enum nl80211_channel_type chantype);
477 int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
478 const u8 *rates, unsigned int n_rates,
481 int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
484 void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
485 enum nl80211_iftype iftype, int num);
487 #define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
489 #ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
490 #define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
493 * Trick to enable using it as a condition,
494 * and also not give a warning when it's
497 #define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
500 #endif /* __NET_WIRELESS_CORE_H */