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 /* must be last because of the way we do wiphy_priv(),
84 * and it should at least be aligned to NETDEV_ALIGN */
85 struct wiphy wiphy
__aligned(NETDEV_ALIGN
);
89 struct cfg80211_registered_device
*wiphy_to_dev(struct wiphy
*wiphy
)
92 return container_of(wiphy
, struct cfg80211_registered_device
, wiphy
);
96 cfg80211_rdev_free_wowlan(struct cfg80211_registered_device
*rdev
)
101 if (!rdev
->wiphy
.wowlan_config
)
103 for (i
= 0; i
< rdev
->wiphy
.wowlan_config
->n_patterns
; i
++)
104 kfree(rdev
->wiphy
.wowlan_config
->patterns
[i
].mask
);
105 kfree(rdev
->wiphy
.wowlan_config
->patterns
);
106 if (rdev
->wiphy
.wowlan_config
->tcp
&&
107 rdev
->wiphy
.wowlan_config
->tcp
->sock
)
108 sock_release(rdev
->wiphy
.wowlan_config
->tcp
->sock
);
109 kfree(rdev
->wiphy
.wowlan_config
->tcp
);
110 kfree(rdev
->wiphy
.wowlan_config
);
114 extern struct workqueue_struct
*cfg80211_wq
;
115 extern struct list_head cfg80211_rdev_list
;
116 extern int cfg80211_rdev_list_generation
;
118 struct cfg80211_internal_bss
{
119 struct list_head list
;
120 struct list_head hidden_list
;
123 unsigned long refcount
;
126 /* must be last because of priv member */
127 struct cfg80211_bss pub
;
130 static inline struct cfg80211_internal_bss
*bss_from_pub(struct cfg80211_bss
*pub
)
132 return container_of(pub
, struct cfg80211_internal_bss
, pub
);
135 static inline void cfg80211_hold_bss(struct cfg80211_internal_bss
*bss
)
137 atomic_inc(&bss
->hold
);
140 static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss
*bss
)
142 int r
= atomic_dec_return(&bss
->hold
);
147 struct cfg80211_registered_device
*cfg80211_rdev_by_wiphy_idx(int wiphy_idx
);
148 int get_wiphy_idx(struct wiphy
*wiphy
);
150 struct wiphy
*wiphy_idx_to_wiphy(int wiphy_idx
);
152 int cfg80211_switch_netns(struct cfg80211_registered_device
*rdev
,
155 static inline void wdev_lock(struct wireless_dev
*wdev
)
158 mutex_lock(&wdev
->mtx
);
159 __acquire(wdev
->mtx
);
162 static inline void wdev_unlock(struct wireless_dev
*wdev
)
165 __release(wdev
->mtx
);
166 mutex_unlock(&wdev
->mtx
);
169 #define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
171 static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device
*rdev
)
175 return rdev
->num_running_ifaces
== rdev
->num_running_monitor_ifaces
&&
176 rdev
->num_running_ifaces
> 0;
179 enum cfg80211_event_type
{
180 EVENT_CONNECT_RESULT
,
186 struct cfg80211_event
{
187 struct list_head list
;
188 enum cfg80211_event_type type
;
204 struct cfg80211_bss
*bss
;
213 struct ieee80211_channel
*channel
;
218 struct cfg80211_cached_keys
{
219 struct key_params params
[6];
220 u8 data
[6][WLAN_MAX_KEY_LEN
];
224 enum cfg80211_chan_mode
{
230 struct cfg80211_beacon_registration
{
231 struct list_head list
;
236 void cfg80211_dev_free(struct cfg80211_registered_device
*rdev
);
238 int cfg80211_dev_rename(struct cfg80211_registered_device
*rdev
,
241 void ieee80211_set_bitrate_flags(struct wiphy
*wiphy
);
243 void cfg80211_bss_expire(struct cfg80211_registered_device
*dev
);
244 void cfg80211_bss_age(struct cfg80211_registered_device
*dev
,
245 unsigned long age_secs
);
248 int cfg80211_join_ibss(struct cfg80211_registered_device
*rdev
,
249 struct net_device
*dev
,
250 struct cfg80211_ibss_params
*params
,
251 struct cfg80211_cached_keys
*connkeys
);
252 void cfg80211_clear_ibss(struct net_device
*dev
, bool nowext
);
253 int __cfg80211_leave_ibss(struct cfg80211_registered_device
*rdev
,
254 struct net_device
*dev
, bool nowext
);
255 int cfg80211_leave_ibss(struct cfg80211_registered_device
*rdev
,
256 struct net_device
*dev
, bool nowext
);
257 void __cfg80211_ibss_joined(struct net_device
*dev
, const u8
*bssid
,
258 struct ieee80211_channel
*channel
);
259 int cfg80211_ibss_wext_join(struct cfg80211_registered_device
*rdev
,
260 struct wireless_dev
*wdev
);
263 extern const struct mesh_config default_mesh_config
;
264 extern const struct mesh_setup default_mesh_setup
;
265 int __cfg80211_join_mesh(struct cfg80211_registered_device
*rdev
,
266 struct net_device
*dev
,
267 struct mesh_setup
*setup
,
268 const struct mesh_config
*conf
);
269 int cfg80211_join_mesh(struct cfg80211_registered_device
*rdev
,
270 struct net_device
*dev
,
271 struct mesh_setup
*setup
,
272 const struct mesh_config
*conf
);
273 int cfg80211_leave_mesh(struct cfg80211_registered_device
*rdev
,
274 struct net_device
*dev
);
275 int cfg80211_set_mesh_channel(struct cfg80211_registered_device
*rdev
,
276 struct wireless_dev
*wdev
,
277 struct cfg80211_chan_def
*chandef
);
280 int cfg80211_stop_ap(struct cfg80211_registered_device
*rdev
,
281 struct net_device
*dev
, bool notify
);
284 int cfg80211_mlme_auth(struct cfg80211_registered_device
*rdev
,
285 struct net_device
*dev
,
286 struct ieee80211_channel
*chan
,
287 enum nl80211_auth_type auth_type
,
289 const u8
*ssid
, int ssid_len
,
290 const u8
*ie
, int ie_len
,
291 const u8
*key
, int key_len
, int key_idx
,
292 const u8
*sae_data
, int sae_data_len
);
293 int cfg80211_mlme_assoc(struct cfg80211_registered_device
*rdev
,
294 struct net_device
*dev
,
295 struct ieee80211_channel
*chan
,
297 const u8
*ssid
, int ssid_len
,
298 struct cfg80211_assoc_request
*req
);
299 int cfg80211_mlme_deauth(struct cfg80211_registered_device
*rdev
,
300 struct net_device
*dev
, const u8
*bssid
,
301 const u8
*ie
, int ie_len
, u16 reason
,
302 bool local_state_change
);
303 int cfg80211_mlme_disassoc(struct cfg80211_registered_device
*rdev
,
304 struct net_device
*dev
, const u8
*bssid
,
305 const u8
*ie
, int ie_len
, u16 reason
,
306 bool local_state_change
);
307 void cfg80211_mlme_down(struct cfg80211_registered_device
*rdev
,
308 struct net_device
*dev
);
309 int cfg80211_mlme_register_mgmt(struct wireless_dev
*wdev
, u32 snd_pid
,
310 u16 frame_type
, const u8
*match_data
,
312 void cfg80211_mlme_unregister_socket(struct wireless_dev
*wdev
, u32 nlpid
);
313 void cfg80211_mlme_purge_registrations(struct wireless_dev
*wdev
);
314 int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device
*rdev
,
315 struct wireless_dev
*wdev
,
316 struct cfg80211_mgmt_tx_params
*params
,
318 void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap
*ht_capa
,
319 const struct ieee80211_ht_cap
*ht_capa_mask
);
320 void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap
*vht_capa
,
321 const struct ieee80211_vht_cap
*vht_capa_mask
);
324 int cfg80211_connect(struct cfg80211_registered_device
*rdev
,
325 struct net_device
*dev
,
326 struct cfg80211_connect_params
*connect
,
327 struct cfg80211_cached_keys
*connkeys
,
328 const u8
*prev_bssid
);
329 void __cfg80211_connect_result(struct net_device
*dev
, const u8
*bssid
,
330 const u8
*req_ie
, size_t req_ie_len
,
331 const u8
*resp_ie
, size_t resp_ie_len
,
332 u16 status
, bool wextev
,
333 struct cfg80211_bss
*bss
);
334 void __cfg80211_disconnected(struct net_device
*dev
, const u8
*ie
,
335 size_t ie_len
, u16 reason
, bool from_ap
);
336 int cfg80211_disconnect(struct cfg80211_registered_device
*rdev
,
337 struct net_device
*dev
, u16 reason
,
339 void __cfg80211_roamed(struct wireless_dev
*wdev
,
340 struct cfg80211_bss
*bss
,
341 const u8
*req_ie
, size_t req_ie_len
,
342 const u8
*resp_ie
, size_t resp_ie_len
);
343 int cfg80211_mgd_wext_connect(struct cfg80211_registered_device
*rdev
,
344 struct wireless_dev
*wdev
);
346 /* SME implementation */
347 void cfg80211_conn_work(struct work_struct
*work
);
348 void cfg80211_sme_scan_done(struct net_device
*dev
);
349 bool cfg80211_sme_rx_assoc_resp(struct wireless_dev
*wdev
, u16 status
);
350 void cfg80211_sme_rx_auth(struct wireless_dev
*wdev
, const u8
*buf
, size_t len
);
351 void cfg80211_sme_disassoc(struct wireless_dev
*wdev
);
352 void cfg80211_sme_deauth(struct wireless_dev
*wdev
);
353 void cfg80211_sme_auth_timeout(struct wireless_dev
*wdev
);
354 void cfg80211_sme_assoc_timeout(struct wireless_dev
*wdev
);
356 /* internal helpers */
357 bool cfg80211_supported_cipher_suite(struct wiphy
*wiphy
, u32 cipher
);
358 int cfg80211_validate_key_settings(struct cfg80211_registered_device
*rdev
,
359 struct key_params
*params
, int key_idx
,
360 bool pairwise
, const u8
*mac_addr
);
361 void __cfg80211_scan_done(struct work_struct
*wk
);
362 void ___cfg80211_scan_done(struct cfg80211_registered_device
*rdev
,
364 void __cfg80211_sched_scan_results(struct work_struct
*wk
);
365 int __cfg80211_stop_sched_scan(struct cfg80211_registered_device
*rdev
,
366 bool driver_initiated
);
367 void cfg80211_upload_connect_keys(struct wireless_dev
*wdev
);
368 int cfg80211_change_iface(struct cfg80211_registered_device
*rdev
,
369 struct net_device
*dev
, enum nl80211_iftype ntype
,
370 u32
*flags
, struct vif_params
*params
);
371 void cfg80211_process_rdev_events(struct cfg80211_registered_device
*rdev
);
372 void cfg80211_process_wdev_events(struct wireless_dev
*wdev
);
374 int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device
*rdev
,
375 struct wireless_dev
*wdev
,
376 enum nl80211_iftype iftype
,
377 struct ieee80211_channel
*chan
,
378 enum cfg80211_chan_mode chanmode
,
382 * cfg80211_chandef_dfs_usable - checks if chandef is DFS usable
383 * @wiphy: the wiphy to validate against
384 * @chandef: the channel definition to check
386 * Checks if chandef is usable and we can/need start CAC on such channel.
388 * Return: Return true if all channels available and at least
389 * one channel require CAC (NL80211_DFS_USABLE)
391 bool cfg80211_chandef_dfs_usable(struct wiphy
*wiphy
,
392 const struct cfg80211_chan_def
*chandef
);
394 void cfg80211_set_dfs_state(struct wiphy
*wiphy
,
395 const struct cfg80211_chan_def
*chandef
,
396 enum nl80211_dfs_state dfs_state
);
398 void cfg80211_dfs_channels_update_work(struct work_struct
*work
);
401 cfg80211_chandef_dfs_cac_time(struct wiphy
*wiphy
,
402 const struct cfg80211_chan_def
*chandef
);
405 cfg80211_can_change_interface(struct cfg80211_registered_device
*rdev
,
406 struct wireless_dev
*wdev
,
407 enum nl80211_iftype iftype
)
409 return cfg80211_can_use_iftype_chan(rdev
, wdev
, iftype
, NULL
,
410 CHAN_MODE_UNDEFINED
, 0);
414 cfg80211_can_add_interface(struct cfg80211_registered_device
*rdev
,
415 enum nl80211_iftype iftype
)
417 if (rfkill_blocked(rdev
->rfkill
))
420 return cfg80211_can_change_interface(rdev
, NULL
, iftype
);
424 cfg80211_can_use_chan(struct cfg80211_registered_device
*rdev
,
425 struct wireless_dev
*wdev
,
426 struct ieee80211_channel
*chan
,
427 enum cfg80211_chan_mode chanmode
)
429 return cfg80211_can_use_iftype_chan(rdev
, wdev
, wdev
->iftype
,
433 static inline unsigned int elapsed_jiffies_msecs(unsigned long start
)
435 unsigned long end
= jiffies
;
438 return jiffies_to_msecs(end
- start
);
440 return jiffies_to_msecs(end
+ (MAX_JIFFY_OFFSET
- start
) + 1);
444 cfg80211_get_chan_state(struct wireless_dev
*wdev
,
445 struct ieee80211_channel
**chan
,
446 enum cfg80211_chan_mode
*chanmode
,
449 int cfg80211_set_monitor_channel(struct cfg80211_registered_device
*rdev
,
450 struct cfg80211_chan_def
*chandef
);
452 int ieee80211_get_ratemask(struct ieee80211_supported_band
*sband
,
453 const u8
*rates
, unsigned int n_rates
,
456 int cfg80211_validate_beacon_int(struct cfg80211_registered_device
*rdev
,
459 void cfg80211_update_iface_num(struct cfg80211_registered_device
*rdev
,
460 enum nl80211_iftype iftype
, int num
);
462 void cfg80211_leave(struct cfg80211_registered_device
*rdev
,
463 struct wireless_dev
*wdev
);
465 void cfg80211_stop_p2p_device(struct cfg80211_registered_device
*rdev
,
466 struct wireless_dev
*wdev
);
468 #define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
470 #ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
471 #define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
474 * Trick to enable using it as a condition,
475 * and also not give a warning when it's
478 #define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
481 #endif /* __NET_WIRELESS_CORE_H */