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];
40 * the driver requests the regulatory core to set this regulatory
41 * domain as the wiphy's. Only used for %REGULATORY_WIPHY_SELF_MANAGED
42 * devices using the regulatory_set_wiphy_regd() API
44 const struct ieee80211_regdomain
*requested_regd
;
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 /* protected by RTNL */
54 int devlist_generation
, wdev_id
;
56 wait_queue_head_t dev_wait
;
58 struct list_head beacon_registrations
;
59 spinlock_t beacon_registrations_lock
;
61 struct list_head mlme_unreg
;
62 spinlock_t mlme_unreg_lock
;
63 struct work_struct mlme_unreg_wk
;
65 /* protected by RTNL only */
66 int num_running_ifaces
;
67 int num_running_monitor_ifaces
;
71 struct list_head bss_list
;
72 struct rb_root bss_tree
;
75 struct cfg80211_scan_request
*scan_req
; /* protected by RTNL */
76 struct sk_buff
*scan_msg
;
77 struct cfg80211_sched_scan_request __rcu
*sched_scan_req
;
78 unsigned long suspend_at
;
79 struct work_struct scan_done_wk
;
80 struct work_struct sched_scan_results_wk
;
82 struct genl_info
*cur_cmd_info
;
84 struct work_struct conn_work
;
85 struct work_struct event_work
;
87 struct delayed_work dfs_update_channels_wk
;
89 /* netlink port which started critical protocol (0 means not started) */
90 u32 crit_proto_nlportid
;
92 struct cfg80211_coalesce
*coalesce
;
94 spinlock_t destroy_list_lock
;
95 struct list_head destroy_list
;
96 struct work_struct destroy_work
;
98 struct work_struct sched_scan_stop_wk
;
100 /* must be last because of the way we do wiphy_priv(),
101 * and it should at least be aligned to NETDEV_ALIGN */
102 struct wiphy wiphy
__aligned(NETDEV_ALIGN
);
106 struct cfg80211_registered_device
*wiphy_to_rdev(struct wiphy
*wiphy
)
109 return container_of(wiphy
, struct cfg80211_registered_device
, wiphy
);
113 cfg80211_rdev_free_wowlan(struct cfg80211_registered_device
*rdev
)
118 if (!rdev
->wiphy
.wowlan_config
)
120 for (i
= 0; i
< rdev
->wiphy
.wowlan_config
->n_patterns
; i
++)
121 kfree(rdev
->wiphy
.wowlan_config
->patterns
[i
].mask
);
122 kfree(rdev
->wiphy
.wowlan_config
->patterns
);
123 if (rdev
->wiphy
.wowlan_config
->tcp
&&
124 rdev
->wiphy
.wowlan_config
->tcp
->sock
)
125 sock_release(rdev
->wiphy
.wowlan_config
->tcp
->sock
);
126 kfree(rdev
->wiphy
.wowlan_config
->tcp
);
127 kfree(rdev
->wiphy
.wowlan_config
->nd_config
);
128 kfree(rdev
->wiphy
.wowlan_config
);
132 extern struct workqueue_struct
*cfg80211_wq
;
133 extern struct list_head cfg80211_rdev_list
;
134 extern int cfg80211_rdev_list_generation
;
136 struct cfg80211_internal_bss
{
137 struct list_head list
;
138 struct list_head hidden_list
;
142 unsigned long refcount
;
145 /* time at the start of the reception of the first octet of the
146 * timestamp field of the last beacon/probe received for this BSS.
147 * The time is the TSF of the BSS specified by %parent_bssid.
151 /* the BSS according to which %parent_tsf is set. This is set to
152 * the BSS that the interface that requested the scan was connected to
153 * when the beacon/probe was received.
155 u8 parent_bssid
[ETH_ALEN
] __aligned(2);
157 /* must be last because of priv member */
158 struct cfg80211_bss pub
;
161 static inline struct cfg80211_internal_bss
*bss_from_pub(struct cfg80211_bss
*pub
)
163 return container_of(pub
, struct cfg80211_internal_bss
, pub
);
166 static inline void cfg80211_hold_bss(struct cfg80211_internal_bss
*bss
)
168 atomic_inc(&bss
->hold
);
171 static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss
*bss
)
173 int r
= atomic_dec_return(&bss
->hold
);
178 struct cfg80211_registered_device
*cfg80211_rdev_by_wiphy_idx(int wiphy_idx
);
179 int get_wiphy_idx(struct wiphy
*wiphy
);
181 struct wiphy
*wiphy_idx_to_wiphy(int wiphy_idx
);
183 int cfg80211_switch_netns(struct cfg80211_registered_device
*rdev
,
186 static inline void wdev_lock(struct wireless_dev
*wdev
)
189 mutex_lock(&wdev
->mtx
);
190 __acquire(wdev
->mtx
);
193 static inline void wdev_unlock(struct wireless_dev
*wdev
)
196 __release(wdev
->mtx
);
197 mutex_unlock(&wdev
->mtx
);
200 #define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
202 static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device
*rdev
)
206 return rdev
->num_running_ifaces
== rdev
->num_running_monitor_ifaces
&&
207 rdev
->num_running_ifaces
> 0;
210 enum cfg80211_event_type
{
211 EVENT_CONNECT_RESULT
,
218 struct cfg80211_event
{
219 struct list_head list
;
220 enum cfg80211_event_type type
;
229 struct cfg80211_bss
*bss
;
230 int status
; /* -1 = failed; 0..65535 = status code */
231 enum nl80211_timeout_reason timeout_reason
;
238 struct cfg80211_bss
*bss
;
244 bool locally_generated
;
248 struct ieee80211_channel
*channel
;
253 struct cfg80211_cached_keys
{
254 struct key_params params
[CFG80211_MAX_WEP_KEYS
];
255 u8 data
[CFG80211_MAX_WEP_KEYS
][WLAN_KEY_LEN_WEP104
];
259 enum cfg80211_chan_mode
{
265 struct cfg80211_beacon_registration
{
266 struct list_head list
;
270 struct cfg80211_iface_destroy
{
271 struct list_head list
;
275 struct cfg80211_cqm_config
{
277 s32 last_rssi_event_value
;
278 int n_rssi_thresholds
;
279 s32 rssi_thresholds
[0];
282 void cfg80211_destroy_ifaces(struct cfg80211_registered_device
*rdev
);
285 void cfg80211_dev_free(struct cfg80211_registered_device
*rdev
);
287 int cfg80211_dev_rename(struct cfg80211_registered_device
*rdev
,
290 void ieee80211_set_bitrate_flags(struct wiphy
*wiphy
);
292 void cfg80211_bss_expire(struct cfg80211_registered_device
*rdev
);
293 void cfg80211_bss_age(struct cfg80211_registered_device
*rdev
,
294 unsigned long age_secs
);
297 int cfg80211_join_ibss(struct cfg80211_registered_device
*rdev
,
298 struct net_device
*dev
,
299 struct cfg80211_ibss_params
*params
,
300 struct cfg80211_cached_keys
*connkeys
);
301 void cfg80211_clear_ibss(struct net_device
*dev
, bool nowext
);
302 int __cfg80211_leave_ibss(struct cfg80211_registered_device
*rdev
,
303 struct net_device
*dev
, bool nowext
);
304 int cfg80211_leave_ibss(struct cfg80211_registered_device
*rdev
,
305 struct net_device
*dev
, bool nowext
);
306 void __cfg80211_ibss_joined(struct net_device
*dev
, const u8
*bssid
,
307 struct ieee80211_channel
*channel
);
308 int cfg80211_ibss_wext_join(struct cfg80211_registered_device
*rdev
,
309 struct wireless_dev
*wdev
);
312 extern const struct mesh_config default_mesh_config
;
313 extern const struct mesh_setup default_mesh_setup
;
314 int __cfg80211_join_mesh(struct cfg80211_registered_device
*rdev
,
315 struct net_device
*dev
,
316 struct mesh_setup
*setup
,
317 const struct mesh_config
*conf
);
318 int cfg80211_join_mesh(struct cfg80211_registered_device
*rdev
,
319 struct net_device
*dev
,
320 struct mesh_setup
*setup
,
321 const struct mesh_config
*conf
);
322 int __cfg80211_leave_mesh(struct cfg80211_registered_device
*rdev
,
323 struct net_device
*dev
);
324 int cfg80211_leave_mesh(struct cfg80211_registered_device
*rdev
,
325 struct net_device
*dev
);
326 int cfg80211_set_mesh_channel(struct cfg80211_registered_device
*rdev
,
327 struct wireless_dev
*wdev
,
328 struct cfg80211_chan_def
*chandef
);
331 int __cfg80211_join_ocb(struct cfg80211_registered_device
*rdev
,
332 struct net_device
*dev
,
333 struct ocb_setup
*setup
);
334 int cfg80211_join_ocb(struct cfg80211_registered_device
*rdev
,
335 struct net_device
*dev
,
336 struct ocb_setup
*setup
);
337 int __cfg80211_leave_ocb(struct cfg80211_registered_device
*rdev
,
338 struct net_device
*dev
);
339 int cfg80211_leave_ocb(struct cfg80211_registered_device
*rdev
,
340 struct net_device
*dev
);
343 int __cfg80211_stop_ap(struct cfg80211_registered_device
*rdev
,
344 struct net_device
*dev
, bool notify
);
345 int cfg80211_stop_ap(struct cfg80211_registered_device
*rdev
,
346 struct net_device
*dev
, bool notify
);
349 int cfg80211_mlme_auth(struct cfg80211_registered_device
*rdev
,
350 struct net_device
*dev
,
351 struct ieee80211_channel
*chan
,
352 enum nl80211_auth_type auth_type
,
354 const u8
*ssid
, int ssid_len
,
355 const u8
*ie
, int ie_len
,
356 const u8
*key
, int key_len
, int key_idx
,
357 const u8
*auth_data
, int auth_data_len
);
358 int cfg80211_mlme_assoc(struct cfg80211_registered_device
*rdev
,
359 struct net_device
*dev
,
360 struct ieee80211_channel
*chan
,
362 const u8
*ssid
, int ssid_len
,
363 struct cfg80211_assoc_request
*req
);
364 int cfg80211_mlme_deauth(struct cfg80211_registered_device
*rdev
,
365 struct net_device
*dev
, const u8
*bssid
,
366 const u8
*ie
, int ie_len
, u16 reason
,
367 bool local_state_change
);
368 int cfg80211_mlme_disassoc(struct cfg80211_registered_device
*rdev
,
369 struct net_device
*dev
, const u8
*bssid
,
370 const u8
*ie
, int ie_len
, u16 reason
,
371 bool local_state_change
);
372 void cfg80211_mlme_down(struct cfg80211_registered_device
*rdev
,
373 struct net_device
*dev
);
374 int cfg80211_mlme_register_mgmt(struct wireless_dev
*wdev
, u32 snd_pid
,
375 u16 frame_type
, const u8
*match_data
,
377 void cfg80211_mlme_unreg_wk(struct work_struct
*wk
);
378 void cfg80211_mlme_unregister_socket(struct wireless_dev
*wdev
, u32 nlpid
);
379 void cfg80211_mlme_purge_registrations(struct wireless_dev
*wdev
);
380 int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device
*rdev
,
381 struct wireless_dev
*wdev
,
382 struct cfg80211_mgmt_tx_params
*params
,
384 void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap
*ht_capa
,
385 const struct ieee80211_ht_cap
*ht_capa_mask
);
386 void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap
*vht_capa
,
387 const struct ieee80211_vht_cap
*vht_capa_mask
);
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 const u8
*prev_bssid
);
395 void __cfg80211_connect_result(struct net_device
*dev
, const u8
*bssid
,
396 const u8
*req_ie
, size_t req_ie_len
,
397 const u8
*resp_ie
, size_t resp_ie_len
,
398 int status
, bool wextev
,
399 struct cfg80211_bss
*bss
,
400 enum nl80211_timeout_reason timeout_reason
);
401 void __cfg80211_disconnected(struct net_device
*dev
, const u8
*ie
,
402 size_t ie_len
, u16 reason
, bool from_ap
);
403 int cfg80211_disconnect(struct cfg80211_registered_device
*rdev
,
404 struct net_device
*dev
, u16 reason
,
406 void __cfg80211_roamed(struct wireless_dev
*wdev
,
407 struct cfg80211_bss
*bss
,
408 const u8
*req_ie
, size_t req_ie_len
,
409 const u8
*resp_ie
, size_t resp_ie_len
);
410 int cfg80211_mgd_wext_connect(struct cfg80211_registered_device
*rdev
,
411 struct wireless_dev
*wdev
);
412 void cfg80211_autodisconnect_wk(struct work_struct
*work
);
414 /* SME implementation */
415 void cfg80211_conn_work(struct work_struct
*work
);
416 void cfg80211_sme_scan_done(struct net_device
*dev
);
417 bool cfg80211_sme_rx_assoc_resp(struct wireless_dev
*wdev
, u16 status
);
418 void cfg80211_sme_rx_auth(struct wireless_dev
*wdev
, const u8
*buf
, size_t len
);
419 void cfg80211_sme_disassoc(struct wireless_dev
*wdev
);
420 void cfg80211_sme_deauth(struct wireless_dev
*wdev
);
421 void cfg80211_sme_auth_timeout(struct wireless_dev
*wdev
);
422 void cfg80211_sme_assoc_timeout(struct wireless_dev
*wdev
);
423 void cfg80211_sme_abandon_assoc(struct wireless_dev
*wdev
);
425 /* internal helpers */
426 bool cfg80211_supported_cipher_suite(struct wiphy
*wiphy
, u32 cipher
);
427 int cfg80211_validate_key_settings(struct cfg80211_registered_device
*rdev
,
428 struct key_params
*params
, int key_idx
,
429 bool pairwise
, const u8
*mac_addr
);
430 void __cfg80211_scan_done(struct work_struct
*wk
);
431 void ___cfg80211_scan_done(struct cfg80211_registered_device
*rdev
,
433 void __cfg80211_sched_scan_results(struct work_struct
*wk
);
434 int __cfg80211_stop_sched_scan(struct cfg80211_registered_device
*rdev
,
435 bool driver_initiated
);
436 void cfg80211_upload_connect_keys(struct wireless_dev
*wdev
);
437 int cfg80211_change_iface(struct cfg80211_registered_device
*rdev
,
438 struct net_device
*dev
, enum nl80211_iftype ntype
,
439 u32
*flags
, struct vif_params
*params
);
440 void cfg80211_process_rdev_events(struct cfg80211_registered_device
*rdev
);
441 void cfg80211_process_wdev_events(struct wireless_dev
*wdev
);
443 bool cfg80211_does_bw_fit_range(const struct ieee80211_freq_range
*freq_range
,
444 u32 center_freq_khz
, u32 bw_khz
);
447 * cfg80211_chandef_dfs_usable - checks if chandef is DFS usable
448 * @wiphy: the wiphy to validate against
449 * @chandef: the channel definition to check
451 * Checks if chandef is usable and we can/need start CAC on such channel.
453 * Return: Return true if all channels available and at least
454 * one channel require CAC (NL80211_DFS_USABLE)
456 bool cfg80211_chandef_dfs_usable(struct wiphy
*wiphy
,
457 const struct cfg80211_chan_def
*chandef
);
459 void cfg80211_set_dfs_state(struct wiphy
*wiphy
,
460 const struct cfg80211_chan_def
*chandef
,
461 enum nl80211_dfs_state dfs_state
);
463 void cfg80211_dfs_channels_update_work(struct work_struct
*work
);
466 cfg80211_chandef_dfs_cac_time(struct wiphy
*wiphy
,
467 const struct cfg80211_chan_def
*chandef
);
469 void cfg80211_sched_dfs_chan_update(struct cfg80211_registered_device
*rdev
);
471 bool cfg80211_any_wiphy_oper_chan(struct wiphy
*wiphy
,
472 struct ieee80211_channel
*chan
);
474 bool cfg80211_beaconing_iface_active(struct wireless_dev
*wdev
);
476 bool cfg80211_is_sub_chan(struct cfg80211_chan_def
*chandef
,
477 struct ieee80211_channel
*chan
);
479 static inline unsigned int elapsed_jiffies_msecs(unsigned long start
)
481 unsigned long end
= jiffies
;
484 return jiffies_to_msecs(end
- start
);
486 return jiffies_to_msecs(end
+ (ULONG_MAX
- start
) + 1);
490 cfg80211_get_chan_state(struct wireless_dev
*wdev
,
491 struct ieee80211_channel
**chan
,
492 enum cfg80211_chan_mode
*chanmode
,
495 int cfg80211_set_monitor_channel(struct cfg80211_registered_device
*rdev
,
496 struct cfg80211_chan_def
*chandef
);
498 int ieee80211_get_ratemask(struct ieee80211_supported_band
*sband
,
499 const u8
*rates
, unsigned int n_rates
,
502 int cfg80211_validate_beacon_int(struct cfg80211_registered_device
*rdev
,
503 enum nl80211_iftype iftype
, u32 beacon_int
);
505 void cfg80211_update_iface_num(struct cfg80211_registered_device
*rdev
,
506 enum nl80211_iftype iftype
, int num
);
508 void __cfg80211_leave(struct cfg80211_registered_device
*rdev
,
509 struct wireless_dev
*wdev
);
510 void cfg80211_leave(struct cfg80211_registered_device
*rdev
,
511 struct wireless_dev
*wdev
);
513 void cfg80211_stop_p2p_device(struct cfg80211_registered_device
*rdev
,
514 struct wireless_dev
*wdev
);
516 void cfg80211_stop_nan(struct cfg80211_registered_device
*rdev
,
517 struct wireless_dev
*wdev
);
519 #define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
521 #ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
522 #define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
525 * Trick to enable using it as a condition,
526 * and also not give a warning when it's
529 #define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
532 void cfg80211_cqm_config_free(struct wireless_dev
*wdev
);
534 #endif /* __NET_WIRELESS_CORE_H */