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/list.h>
9 #include <linux/netdevice.h>
10 #include <linux/rbtree.h>
11 #include <linux/debugfs.h>
12 #include <linux/rfkill.h>
13 #include <linux/workqueue.h>
14 #include <linux/rtnetlink.h>
15 #include <net/genetlink.h>
16 #include <net/cfg80211.h>
20 #define WIPHY_IDX_INVALID -1
22 struct cfg80211_registered_device
{
23 const struct cfg80211_ops
*ops
;
24 struct list_head list
;
27 struct rfkill_ops rfkill_ops
;
28 struct rfkill
*rfkill
;
29 struct work_struct rfkill_sync
;
31 /* ISO / IEC 3166 alpha2 for which this device is receiving
32 * country IEs on, this can help disregard country IEs from APs
33 * on the same alpha2 quickly. The alpha2 may differ from
34 * cfg80211_regdomain's alpha2 when an intersection has occurred.
35 * If the AP is reconfigured this can also be used to tell us if
36 * the country on the country IE changed. */
37 char country_ie_alpha2
[2];
39 /* If a Country IE has been received this tells us the environment
40 * which its telling us its in. This defaults to ENVIRON_ANY */
41 enum environment_cap env
;
43 /* wiphy index, internal only */
46 /* associated wireless interfaces, protected by rtnl or RCU */
47 struct list_head wdev_list
;
48 int devlist_generation
, wdev_id
;
49 int opencount
; /* also protected by devlist_mtx */
50 wait_queue_head_t dev_wait
;
52 struct list_head beacon_registrations
;
53 spinlock_t beacon_registrations_lock
;
55 /* protected by RTNL only */
56 int num_running_ifaces
;
57 int num_running_monitor_ifaces
;
61 struct list_head bss_list
;
62 struct rb_root bss_tree
;
64 struct cfg80211_scan_request
*scan_req
; /* protected by RTNL */
65 struct sk_buff
*scan_msg
;
66 struct cfg80211_sched_scan_request
*sched_scan_req
;
67 unsigned long suspend_at
;
68 struct work_struct scan_done_wk
;
69 struct work_struct sched_scan_results_wk
;
71 struct genl_info
*cur_cmd_info
;
73 struct work_struct conn_work
;
74 struct work_struct event_work
;
76 struct delayed_work dfs_update_channels_wk
;
78 /* netlink port which started critical protocol (0 means not started) */
79 u32 crit_proto_nlportid
;
81 struct cfg80211_coalesce
*coalesce
;
83 spinlock_t destroy_list_lock
;
84 struct list_head destroy_list
;
85 struct work_struct destroy_work
;
87 /* must be last because of the way we do wiphy_priv(),
88 * and it should at least be aligned to NETDEV_ALIGN */
89 struct wiphy wiphy
__aligned(NETDEV_ALIGN
);
93 struct cfg80211_registered_device
*wiphy_to_rdev(struct wiphy
*wiphy
)
96 return container_of(wiphy
, struct cfg80211_registered_device
, wiphy
);
100 cfg80211_rdev_free_wowlan(struct cfg80211_registered_device
*rdev
)
105 if (!rdev
->wiphy
.wowlan_config
)
107 for (i
= 0; i
< rdev
->wiphy
.wowlan_config
->n_patterns
; i
++)
108 kfree(rdev
->wiphy
.wowlan_config
->patterns
[i
].mask
);
109 kfree(rdev
->wiphy
.wowlan_config
->patterns
);
110 if (rdev
->wiphy
.wowlan_config
->tcp
&&
111 rdev
->wiphy
.wowlan_config
->tcp
->sock
)
112 sock_release(rdev
->wiphy
.wowlan_config
->tcp
->sock
);
113 kfree(rdev
->wiphy
.wowlan_config
->tcp
);
114 kfree(rdev
->wiphy
.wowlan_config
);
118 extern struct workqueue_struct
*cfg80211_wq
;
119 extern struct list_head cfg80211_rdev_list
;
120 extern int cfg80211_rdev_list_generation
;
122 struct cfg80211_internal_bss
{
123 struct list_head list
;
124 struct list_head hidden_list
;
127 unsigned long refcount
;
130 /* must be last because of priv member */
131 struct cfg80211_bss pub
;
134 static inline struct cfg80211_internal_bss
*bss_from_pub(struct cfg80211_bss
*pub
)
136 return container_of(pub
, struct cfg80211_internal_bss
, pub
);
139 static inline void cfg80211_hold_bss(struct cfg80211_internal_bss
*bss
)
141 atomic_inc(&bss
->hold
);
144 static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss
*bss
)
146 int r
= atomic_dec_return(&bss
->hold
);
151 struct cfg80211_registered_device
*cfg80211_rdev_by_wiphy_idx(int wiphy_idx
);
152 int get_wiphy_idx(struct wiphy
*wiphy
);
154 struct wiphy
*wiphy_idx_to_wiphy(int wiphy_idx
);
156 int cfg80211_switch_netns(struct cfg80211_registered_device
*rdev
,
159 static inline void wdev_lock(struct wireless_dev
*wdev
)
162 mutex_lock(&wdev
->mtx
);
163 __acquire(wdev
->mtx
);
166 static inline void wdev_unlock(struct wireless_dev
*wdev
)
169 __release(wdev
->mtx
);
170 mutex_unlock(&wdev
->mtx
);
173 #define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
175 static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device
*rdev
)
179 return rdev
->num_running_ifaces
== rdev
->num_running_monitor_ifaces
&&
180 rdev
->num_running_ifaces
> 0;
183 enum cfg80211_event_type
{
184 EVENT_CONNECT_RESULT
,
191 struct cfg80211_event
{
192 struct list_head list
;
193 enum cfg80211_event_type type
;
209 struct cfg80211_bss
*bss
;
218 struct ieee80211_channel
*channel
;
223 struct cfg80211_cached_keys
{
224 struct key_params params
[6];
225 u8 data
[6][WLAN_MAX_KEY_LEN
];
229 enum cfg80211_chan_mode
{
235 struct cfg80211_beacon_registration
{
236 struct list_head list
;
240 struct cfg80211_iface_destroy
{
241 struct list_head list
;
245 void cfg80211_destroy_ifaces(struct cfg80211_registered_device
*rdev
);
248 void cfg80211_dev_free(struct cfg80211_registered_device
*rdev
);
250 int cfg80211_dev_rename(struct cfg80211_registered_device
*rdev
,
253 void ieee80211_set_bitrate_flags(struct wiphy
*wiphy
);
255 void cfg80211_bss_expire(struct cfg80211_registered_device
*rdev
);
256 void cfg80211_bss_age(struct cfg80211_registered_device
*rdev
,
257 unsigned long age_secs
);
260 int cfg80211_join_ibss(struct cfg80211_registered_device
*rdev
,
261 struct net_device
*dev
,
262 struct cfg80211_ibss_params
*params
,
263 struct cfg80211_cached_keys
*connkeys
);
264 void cfg80211_clear_ibss(struct net_device
*dev
, bool nowext
);
265 int __cfg80211_leave_ibss(struct cfg80211_registered_device
*rdev
,
266 struct net_device
*dev
, bool nowext
);
267 int cfg80211_leave_ibss(struct cfg80211_registered_device
*rdev
,
268 struct net_device
*dev
, bool nowext
);
269 void __cfg80211_ibss_joined(struct net_device
*dev
, const u8
*bssid
,
270 struct ieee80211_channel
*channel
);
271 int cfg80211_ibss_wext_join(struct cfg80211_registered_device
*rdev
,
272 struct wireless_dev
*wdev
);
275 extern const struct mesh_config default_mesh_config
;
276 extern const struct mesh_setup default_mesh_setup
;
277 int __cfg80211_join_mesh(struct cfg80211_registered_device
*rdev
,
278 struct net_device
*dev
,
279 struct mesh_setup
*setup
,
280 const struct mesh_config
*conf
);
281 int cfg80211_join_mesh(struct cfg80211_registered_device
*rdev
,
282 struct net_device
*dev
,
283 struct mesh_setup
*setup
,
284 const struct mesh_config
*conf
);
285 int __cfg80211_leave_mesh(struct cfg80211_registered_device
*rdev
,
286 struct net_device
*dev
);
287 int cfg80211_leave_mesh(struct cfg80211_registered_device
*rdev
,
288 struct net_device
*dev
);
289 int cfg80211_set_mesh_channel(struct cfg80211_registered_device
*rdev
,
290 struct wireless_dev
*wdev
,
291 struct cfg80211_chan_def
*chandef
);
294 int __cfg80211_join_ocb(struct cfg80211_registered_device
*rdev
,
295 struct net_device
*dev
,
296 struct ocb_setup
*setup
);
297 int cfg80211_join_ocb(struct cfg80211_registered_device
*rdev
,
298 struct net_device
*dev
,
299 struct ocb_setup
*setup
);
300 int __cfg80211_leave_ocb(struct cfg80211_registered_device
*rdev
,
301 struct net_device
*dev
);
302 int cfg80211_leave_ocb(struct cfg80211_registered_device
*rdev
,
303 struct net_device
*dev
);
306 int __cfg80211_stop_ap(struct cfg80211_registered_device
*rdev
,
307 struct net_device
*dev
, bool notify
);
308 int cfg80211_stop_ap(struct cfg80211_registered_device
*rdev
,
309 struct net_device
*dev
, bool notify
);
312 int cfg80211_mlme_auth(struct cfg80211_registered_device
*rdev
,
313 struct net_device
*dev
,
314 struct ieee80211_channel
*chan
,
315 enum nl80211_auth_type auth_type
,
317 const u8
*ssid
, int ssid_len
,
318 const u8
*ie
, int ie_len
,
319 const u8
*key
, int key_len
, int key_idx
,
320 const u8
*sae_data
, int sae_data_len
);
321 int cfg80211_mlme_assoc(struct cfg80211_registered_device
*rdev
,
322 struct net_device
*dev
,
323 struct ieee80211_channel
*chan
,
325 const u8
*ssid
, int ssid_len
,
326 struct cfg80211_assoc_request
*req
);
327 int cfg80211_mlme_deauth(struct cfg80211_registered_device
*rdev
,
328 struct net_device
*dev
, const u8
*bssid
,
329 const u8
*ie
, int ie_len
, u16 reason
,
330 bool local_state_change
);
331 int cfg80211_mlme_disassoc(struct cfg80211_registered_device
*rdev
,
332 struct net_device
*dev
, const u8
*bssid
,
333 const u8
*ie
, int ie_len
, u16 reason
,
334 bool local_state_change
);
335 void cfg80211_mlme_down(struct cfg80211_registered_device
*rdev
,
336 struct net_device
*dev
);
337 int cfg80211_mlme_register_mgmt(struct wireless_dev
*wdev
, u32 snd_pid
,
338 u16 frame_type
, const u8
*match_data
,
340 void cfg80211_mlme_unregister_socket(struct wireless_dev
*wdev
, u32 nlpid
);
341 void cfg80211_mlme_purge_registrations(struct wireless_dev
*wdev
);
342 int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device
*rdev
,
343 struct wireless_dev
*wdev
,
344 struct cfg80211_mgmt_tx_params
*params
,
346 void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap
*ht_capa
,
347 const struct ieee80211_ht_cap
*ht_capa_mask
);
348 void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap
*vht_capa
,
349 const struct ieee80211_vht_cap
*vht_capa_mask
);
352 int cfg80211_connect(struct cfg80211_registered_device
*rdev
,
353 struct net_device
*dev
,
354 struct cfg80211_connect_params
*connect
,
355 struct cfg80211_cached_keys
*connkeys
,
356 const u8
*prev_bssid
);
357 void __cfg80211_connect_result(struct net_device
*dev
, const u8
*bssid
,
358 const u8
*req_ie
, size_t req_ie_len
,
359 const u8
*resp_ie
, size_t resp_ie_len
,
360 u16 status
, bool wextev
,
361 struct cfg80211_bss
*bss
);
362 void __cfg80211_disconnected(struct net_device
*dev
, const u8
*ie
,
363 size_t ie_len
, u16 reason
, bool from_ap
);
364 int cfg80211_disconnect(struct cfg80211_registered_device
*rdev
,
365 struct net_device
*dev
, u16 reason
,
367 void __cfg80211_roamed(struct wireless_dev
*wdev
,
368 struct cfg80211_bss
*bss
,
369 const u8
*req_ie
, size_t req_ie_len
,
370 const u8
*resp_ie
, size_t resp_ie_len
);
371 int cfg80211_mgd_wext_connect(struct cfg80211_registered_device
*rdev
,
372 struct wireless_dev
*wdev
);
374 /* SME implementation */
375 void cfg80211_conn_work(struct work_struct
*work
);
376 void cfg80211_sme_scan_done(struct net_device
*dev
);
377 bool cfg80211_sme_rx_assoc_resp(struct wireless_dev
*wdev
, u16 status
);
378 void cfg80211_sme_rx_auth(struct wireless_dev
*wdev
, const u8
*buf
, size_t len
);
379 void cfg80211_sme_disassoc(struct wireless_dev
*wdev
);
380 void cfg80211_sme_deauth(struct wireless_dev
*wdev
);
381 void cfg80211_sme_auth_timeout(struct wireless_dev
*wdev
);
382 void cfg80211_sme_assoc_timeout(struct wireless_dev
*wdev
);
384 /* internal helpers */
385 bool cfg80211_supported_cipher_suite(struct wiphy
*wiphy
, u32 cipher
);
386 int cfg80211_validate_key_settings(struct cfg80211_registered_device
*rdev
,
387 struct key_params
*params
, int key_idx
,
388 bool pairwise
, const u8
*mac_addr
);
389 void __cfg80211_scan_done(struct work_struct
*wk
);
390 void ___cfg80211_scan_done(struct cfg80211_registered_device
*rdev
,
392 void __cfg80211_sched_scan_results(struct work_struct
*wk
);
393 int __cfg80211_stop_sched_scan(struct cfg80211_registered_device
*rdev
,
394 bool driver_initiated
);
395 void cfg80211_upload_connect_keys(struct wireless_dev
*wdev
);
396 int cfg80211_change_iface(struct cfg80211_registered_device
*rdev
,
397 struct net_device
*dev
, enum nl80211_iftype ntype
,
398 u32
*flags
, struct vif_params
*params
);
399 void cfg80211_process_rdev_events(struct cfg80211_registered_device
*rdev
);
400 void cfg80211_process_wdev_events(struct wireless_dev
*wdev
);
402 int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device
*rdev
,
403 struct wireless_dev
*wdev
,
404 enum nl80211_iftype iftype
,
405 struct ieee80211_channel
*chan
,
406 enum cfg80211_chan_mode chanmode
,
410 * cfg80211_chandef_dfs_usable - checks if chandef is DFS usable
411 * @wiphy: the wiphy to validate against
412 * @chandef: the channel definition to check
414 * Checks if chandef is usable and we can/need start CAC on such channel.
416 * Return: Return true if all channels available and at least
417 * one channel require CAC (NL80211_DFS_USABLE)
419 bool cfg80211_chandef_dfs_usable(struct wiphy
*wiphy
,
420 const struct cfg80211_chan_def
*chandef
);
422 void cfg80211_set_dfs_state(struct wiphy
*wiphy
,
423 const struct cfg80211_chan_def
*chandef
,
424 enum nl80211_dfs_state dfs_state
);
426 void cfg80211_dfs_channels_update_work(struct work_struct
*work
);
429 cfg80211_chandef_dfs_cac_time(struct wiphy
*wiphy
,
430 const struct cfg80211_chan_def
*chandef
);
432 static inline unsigned int elapsed_jiffies_msecs(unsigned long start
)
434 unsigned long end
= jiffies
;
437 return jiffies_to_msecs(end
- start
);
439 return jiffies_to_msecs(end
+ (ULONG_MAX
- start
) + 1);
443 cfg80211_get_chan_state(struct wireless_dev
*wdev
,
444 struct ieee80211_channel
**chan
,
445 enum cfg80211_chan_mode
*chanmode
,
448 int cfg80211_set_monitor_channel(struct cfg80211_registered_device
*rdev
,
449 struct cfg80211_chan_def
*chandef
);
451 int ieee80211_get_ratemask(struct ieee80211_supported_band
*sband
,
452 const u8
*rates
, unsigned int n_rates
,
455 int cfg80211_validate_beacon_int(struct cfg80211_registered_device
*rdev
,
458 void cfg80211_update_iface_num(struct cfg80211_registered_device
*rdev
,
459 enum nl80211_iftype iftype
, int num
);
461 void __cfg80211_leave(struct cfg80211_registered_device
*rdev
,
462 struct wireless_dev
*wdev
);
463 void cfg80211_leave(struct cfg80211_registered_device
*rdev
,
464 struct wireless_dev
*wdev
);
466 void cfg80211_stop_p2p_device(struct cfg80211_registered_device
*rdev
,
467 struct wireless_dev
*wdev
);
469 #define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
471 #ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
472 #define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
475 * Trick to enable using it as a condition,
476 * and also not give a warning when it's
479 #define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
482 #endif /* __NET_WIRELESS_CORE_H */