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
;
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 int cfg80211_mlme_auth(struct cfg80211_registered_device
*rdev
,
325 struct net_device
*dev
, struct ieee80211_channel
*chan
,
326 enum nl80211_auth_type auth_type
, const u8
*bssid
,
327 const u8
*ssid
, int ssid_len
,
328 const u8
*ie
, int ie_len
,
329 const u8
*key
, int key_len
, int key_idx
);
330 int __cfg80211_mlme_assoc(struct cfg80211_registered_device
*rdev
,
331 struct net_device
*dev
,
332 struct ieee80211_channel
*chan
,
333 const u8
*bssid
, const u8
*prev_bssid
,
334 const u8
*ssid
, int ssid_len
,
335 const u8
*ie
, int ie_len
, bool use_mfp
,
336 struct cfg80211_crypto_settings
*crypt
,
337 u32 assoc_flags
, struct ieee80211_ht_cap
*ht_capa
,
338 struct ieee80211_ht_cap
*ht_capa_mask
);
339 int cfg80211_mlme_assoc(struct cfg80211_registered_device
*rdev
,
340 struct net_device
*dev
, struct ieee80211_channel
*chan
,
341 const u8
*bssid
, const u8
*prev_bssid
,
342 const u8
*ssid
, int ssid_len
,
343 const u8
*ie
, int ie_len
, bool use_mfp
,
344 struct cfg80211_crypto_settings
*crypt
,
345 u32 assoc_flags
, struct ieee80211_ht_cap
*ht_capa
,
346 struct ieee80211_ht_cap
*ht_capa_mask
);
347 int __cfg80211_mlme_deauth(struct cfg80211_registered_device
*rdev
,
348 struct net_device
*dev
, const u8
*bssid
,
349 const u8
*ie
, int ie_len
, u16 reason
,
350 bool local_state_change
);
351 int cfg80211_mlme_deauth(struct cfg80211_registered_device
*rdev
,
352 struct net_device
*dev
, const u8
*bssid
,
353 const u8
*ie
, int ie_len
, u16 reason
,
354 bool local_state_change
);
355 int cfg80211_mlme_disassoc(struct cfg80211_registered_device
*rdev
,
356 struct net_device
*dev
, const u8
*bssid
,
357 const u8
*ie
, int ie_len
, u16 reason
,
358 bool local_state_change
);
359 void cfg80211_mlme_down(struct cfg80211_registered_device
*rdev
,
360 struct net_device
*dev
);
361 void __cfg80211_connect_result(struct net_device
*dev
, const u8
*bssid
,
362 const u8
*req_ie
, size_t req_ie_len
,
363 const u8
*resp_ie
, size_t resp_ie_len
,
364 u16 status
, bool wextev
,
365 struct cfg80211_bss
*bss
);
366 int cfg80211_mlme_register_mgmt(struct wireless_dev
*wdev
, u32 snd_pid
,
367 u16 frame_type
, const u8
*match_data
,
369 void cfg80211_mlme_unregister_socket(struct wireless_dev
*wdev
, u32 nlpid
);
370 void cfg80211_mlme_purge_registrations(struct wireless_dev
*wdev
);
371 int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device
*rdev
,
372 struct wireless_dev
*wdev
,
373 struct ieee80211_channel
*chan
, bool offchan
,
374 enum nl80211_channel_type channel_type
,
375 bool channel_type_valid
, unsigned int wait
,
376 const u8
*buf
, size_t len
, bool no_cck
,
377 bool dont_wait_for_ack
, u64
*cookie
);
378 void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap
*ht_capa
,
379 const struct ieee80211_ht_cap
*ht_capa_mask
);
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 const u8
*prev_bssid
);
387 int cfg80211_connect(struct cfg80211_registered_device
*rdev
,
388 struct net_device
*dev
,
389 struct cfg80211_connect_params
*connect
,
390 struct cfg80211_cached_keys
*connkeys
);
391 int __cfg80211_disconnect(struct cfg80211_registered_device
*rdev
,
392 struct net_device
*dev
, u16 reason
,
394 int cfg80211_disconnect(struct cfg80211_registered_device
*rdev
,
395 struct net_device
*dev
, u16 reason
,
397 void __cfg80211_roamed(struct wireless_dev
*wdev
,
398 struct cfg80211_bss
*bss
,
399 const u8
*req_ie
, size_t req_ie_len
,
400 const u8
*resp_ie
, size_t resp_ie_len
);
401 int cfg80211_mgd_wext_connect(struct cfg80211_registered_device
*rdev
,
402 struct wireless_dev
*wdev
);
404 void cfg80211_conn_work(struct work_struct
*work
);
405 void cfg80211_sme_failed_assoc(struct wireless_dev
*wdev
);
406 bool cfg80211_sme_failed_reassoc(struct wireless_dev
*wdev
);
408 /* internal helpers */
409 bool cfg80211_supported_cipher_suite(struct wiphy
*wiphy
, u32 cipher
);
410 int cfg80211_validate_key_settings(struct cfg80211_registered_device
*rdev
,
411 struct key_params
*params
, int key_idx
,
412 bool pairwise
, const u8
*mac_addr
);
413 void __cfg80211_disconnected(struct net_device
*dev
, const u8
*ie
,
414 size_t ie_len
, u16 reason
, bool from_ap
);
415 void cfg80211_sme_scan_done(struct net_device
*dev
);
416 void cfg80211_sme_rx_auth(struct net_device
*dev
, const u8
*buf
, size_t len
);
417 void cfg80211_sme_disassoc(struct net_device
*dev
,
418 struct cfg80211_internal_bss
*bss
);
419 void __cfg80211_scan_done(struct work_struct
*wk
);
420 void ___cfg80211_scan_done(struct cfg80211_registered_device
*rdev
, bool leak
);
421 void __cfg80211_sched_scan_results(struct work_struct
*wk
);
422 int __cfg80211_stop_sched_scan(struct cfg80211_registered_device
*rdev
,
423 bool driver_initiated
);
424 void cfg80211_upload_connect_keys(struct wireless_dev
*wdev
);
425 int cfg80211_change_iface(struct cfg80211_registered_device
*rdev
,
426 struct net_device
*dev
, enum nl80211_iftype ntype
,
427 u32
*flags
, struct vif_params
*params
);
428 void cfg80211_process_rdev_events(struct cfg80211_registered_device
*rdev
);
429 void cfg80211_process_wdev_events(struct wireless_dev
*wdev
);
431 int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device
*rdev
,
432 struct wireless_dev
*wdev
,
433 enum nl80211_iftype iftype
,
434 struct ieee80211_channel
*chan
,
435 enum cfg80211_chan_mode chanmode
);
438 cfg80211_can_change_interface(struct cfg80211_registered_device
*rdev
,
439 struct wireless_dev
*wdev
,
440 enum nl80211_iftype iftype
)
442 return cfg80211_can_use_iftype_chan(rdev
, wdev
, iftype
, NULL
,
443 CHAN_MODE_UNDEFINED
);
447 cfg80211_can_add_interface(struct cfg80211_registered_device
*rdev
,
448 enum nl80211_iftype iftype
)
450 return cfg80211_can_change_interface(rdev
, NULL
, iftype
);
454 cfg80211_can_use_chan(struct cfg80211_registered_device
*rdev
,
455 struct wireless_dev
*wdev
,
456 struct ieee80211_channel
*chan
,
457 enum cfg80211_chan_mode chanmode
)
459 return cfg80211_can_use_iftype_chan(rdev
, wdev
, wdev
->iftype
,
464 cfg80211_get_chan_state(struct wireless_dev
*wdev
,
465 struct ieee80211_channel
**chan
,
466 enum cfg80211_chan_mode
*chanmode
);
468 struct ieee80211_channel
*
469 rdev_freq_to_chan(struct cfg80211_registered_device
*rdev
,
470 int freq
, enum nl80211_channel_type channel_type
);
471 int cfg80211_set_monitor_channel(struct cfg80211_registered_device
*rdev
,
472 int freq
, enum nl80211_channel_type chantype
);
474 int ieee80211_get_ratemask(struct ieee80211_supported_band
*sband
,
475 const u8
*rates
, unsigned int n_rates
,
478 int cfg80211_validate_beacon_int(struct cfg80211_registered_device
*rdev
,
481 void cfg80211_update_iface_num(struct cfg80211_registered_device
*rdev
,
482 enum nl80211_iftype iftype
, int num
);
484 #define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
486 #ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
487 #define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
490 * Trick to enable using it as a condition,
491 * and also not give a warning when it's
494 #define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
497 #endif /* __NET_WIRELESS_CORE_H */