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
__attribute__((__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
);
431 cfg80211_can_change_interface(struct cfg80211_registered_device
*rdev
,
432 struct wireless_dev
*wdev
,
433 enum nl80211_iftype iftype
)
435 return cfg80211_can_use_iftype_chan(rdev
, wdev
, iftype
, NULL
,
436 CHAN_MODE_UNDEFINED
);
440 cfg80211_can_add_interface(struct cfg80211_registered_device
*rdev
,
441 enum nl80211_iftype iftype
)
443 return cfg80211_can_change_interface(rdev
, NULL
, iftype
);
447 cfg80211_can_use_chan(struct cfg80211_registered_device
*rdev
,
448 struct wireless_dev
*wdev
,
449 struct ieee80211_channel
*chan
,
450 enum cfg80211_chan_mode chanmode
)
452 return cfg80211_can_use_iftype_chan(rdev
, wdev
, wdev
->iftype
,
457 cfg80211_get_chan_state(struct wireless_dev
*wdev
,
458 struct ieee80211_channel
**chan
,
459 enum cfg80211_chan_mode
*chanmode
);
461 int cfg80211_set_monitor_channel(struct cfg80211_registered_device
*rdev
,
462 struct cfg80211_chan_def
*chandef
);
464 int ieee80211_get_ratemask(struct ieee80211_supported_band
*sband
,
465 const u8
*rates
, unsigned int n_rates
,
468 int cfg80211_validate_beacon_int(struct cfg80211_registered_device
*rdev
,
471 void cfg80211_update_iface_num(struct cfg80211_registered_device
*rdev
,
472 enum nl80211_iftype iftype
, int num
);
474 #define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
476 #ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
477 #define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
480 * Trick to enable using it as a condition,
481 * and also not give a warning when it's
484 #define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
487 #endif /* __NET_WIRELESS_CORE_H */