2 * Wireless configuration interface internals.
4 * Copyright 2006-2009 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 <net/genetlink.h>
17 #include <net/cfg80211.h>
20 struct cfg80211_registered_device
{
21 const struct cfg80211_ops
*ops
;
22 struct list_head list
;
23 /* we hold this mutex during any call so that
24 * we cannot do multiple calls at once, and also
25 * to avoid the deregister call to proceed while
26 * any call is in progress */
30 struct rfkill_ops rfkill_ops
;
31 struct rfkill
*rfkill
;
32 struct work_struct rfkill_sync
;
34 /* ISO / IEC 3166 alpha2 for which this device is receiving
35 * country IEs on, this can help disregard country IEs from APs
36 * on the same alpha2 quickly. The alpha2 may differ from
37 * cfg80211_regdomain's alpha2 when an intersection has occurred.
38 * If the AP is reconfigured this can also be used to tell us if
39 * the country on the country IE changed. */
40 char country_ie_alpha2
[2];
42 /* If a Country IE has been received this tells us the environment
43 * which its telling us its in. This defaults to ENVIRON_ANY */
44 enum environment_cap env
;
46 /* wiphy index, internal only */
49 /* associate netdev list */
50 struct mutex devlist_mtx
;
51 struct list_head netdev_list
;
55 struct list_head bss_list
;
56 struct rb_root bss_tree
;
58 struct cfg80211_scan_request
*scan_req
; /* protected by RTNL */
59 unsigned long suspend_at
;
60 struct work_struct scan_done_wk
;
62 #ifdef CONFIG_NL80211_TESTMODE
63 struct genl_info
*testmode_info
;
66 struct work_struct conn_work
;
67 struct work_struct event_work
;
70 struct ieee80211_channel
*channel
;
72 #ifdef CONFIG_CFG80211_DEBUGFS
74 struct wiphy_debugfsdentries
{
75 struct dentry
*rts_threshold
;
76 struct dentry
*fragmentation_threshold
;
77 struct dentry
*short_retry_limit
;
78 struct dentry
*long_retry_limit
;
79 struct dentry
*ht40allow_map
;
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
__attribute__((__aligned__(NETDEV_ALIGN
)));
89 struct cfg80211_registered_device
*wiphy_to_dev(struct wiphy
*wiphy
)
92 return container_of(wiphy
, struct cfg80211_registered_device
, wiphy
);
95 /* Note 0 is valid, hence phy0 */
97 bool wiphy_idx_valid(int wiphy_idx
)
99 return (wiphy_idx
>= 0);
102 extern struct mutex cfg80211_mutex
;
103 extern struct list_head cfg80211_rdev_list
;
105 #define assert_cfg80211_lock() WARN_ON(!mutex_is_locked(&cfg80211_mutex))
108 * You can use this to mark a wiphy_idx as not having an associated wiphy.
109 * It guarantees cfg80211_rdev_by_wiphy_idx(wiphy_idx) will return NULL
111 #define WIPHY_IDX_STALE -1
113 struct cfg80211_internal_bss
{
114 struct list_head list
;
121 /* must be last because of priv member */
122 struct cfg80211_bss pub
;
125 static inline struct cfg80211_internal_bss
*bss_from_pub(struct cfg80211_bss
*pub
)
127 return container_of(pub
, struct cfg80211_internal_bss
, pub
);
130 static inline void cfg80211_ref_bss(struct cfg80211_internal_bss
*bss
)
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 cfg80211_registered_device
*
151 __cfg80211_rdev_from_info(struct genl_info
*info
);
154 * This function returns a pointer to the driver
155 * that the genl_info item that is passed refers to.
156 * If successful, it returns non-NULL and also locks
157 * the driver's mutex!
159 * This means that you need to call cfg80211_unlock_rdev()
160 * before being allowed to acquire &cfg80211_mutex!
162 * This is necessary because we need to lock the global
163 * mutex to get an item off the list safely, and then
164 * we lock the rdev mutex so it doesn't go away under us.
166 * We don't want to keep cfg80211_mutex locked
167 * for all the time in order to allow requests on
168 * other interfaces to go through at the same time.
170 * The result of this can be a PTR_ERR and hence must
171 * be checked with IS_ERR() for errors.
173 extern struct cfg80211_registered_device
*
174 cfg80211_get_dev_from_info(struct genl_info
*info
);
176 /* requires cfg80211_rdev_mutex to be held! */
177 struct wiphy
*wiphy_idx_to_wiphy(int wiphy_idx
);
179 /* identical to cfg80211_get_dev_from_info but only operate on ifindex */
180 extern struct cfg80211_registered_device
*
181 cfg80211_get_dev_from_ifindex(struct net
*net
, int ifindex
);
183 int cfg80211_switch_netns(struct cfg80211_registered_device
*rdev
,
186 static inline void cfg80211_lock_rdev(struct cfg80211_registered_device
*rdev
)
188 mutex_lock(&rdev
->mtx
);
191 static inline void cfg80211_unlock_rdev(struct cfg80211_registered_device
*rdev
)
193 BUG_ON(IS_ERR(rdev
) || !rdev
);
194 mutex_unlock(&rdev
->mtx
);
197 static inline void wdev_lock(struct wireless_dev
*wdev
)
200 mutex_lock(&wdev
->mtx
);
201 __acquire(wdev
->mtx
);
204 static inline void wdev_unlock(struct wireless_dev
*wdev
)
207 __release(wdev
->mtx
);
208 mutex_unlock(&wdev
->mtx
);
211 #define ASSERT_RDEV_LOCK(rdev) WARN_ON(!mutex_is_locked(&(rdev)->mtx));
212 #define ASSERT_WDEV_LOCK(wdev) WARN_ON(!mutex_is_locked(&(wdev)->mtx));
214 enum cfg80211_event_type
{
215 EVENT_CONNECT_RESULT
,
221 struct cfg80211_event
{
222 struct list_head list
;
223 enum cfg80211_event_type type
;
252 struct cfg80211_cached_keys
{
253 struct key_params params
[6];
254 u8 data
[6][WLAN_MAX_KEY_LEN
];
260 extern void cfg80211_dev_free(struct cfg80211_registered_device
*rdev
);
262 extern int cfg80211_dev_rename(struct cfg80211_registered_device
*rdev
,
265 void ieee80211_set_bitrate_flags(struct wiphy
*wiphy
);
266 void wiphy_update_regulatory(struct wiphy
*wiphy
,
267 enum nl80211_reg_initiator setby
);
269 void cfg80211_bss_expire(struct cfg80211_registered_device
*dev
);
270 void cfg80211_bss_age(struct cfg80211_registered_device
*dev
,
271 unsigned long age_secs
);
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 int cfg80211_join_ibss(struct cfg80211_registered_device
*rdev
,
279 struct net_device
*dev
,
280 struct cfg80211_ibss_params
*params
,
281 struct cfg80211_cached_keys
*connkeys
);
282 void cfg80211_clear_ibss(struct net_device
*dev
, bool nowext
);
283 int cfg80211_leave_ibss(struct cfg80211_registered_device
*rdev
,
284 struct net_device
*dev
, bool nowext
);
285 void __cfg80211_ibss_joined(struct net_device
*dev
, const u8
*bssid
);
286 int cfg80211_ibss_wext_join(struct cfg80211_registered_device
*rdev
,
287 struct wireless_dev
*wdev
);
290 int __cfg80211_mlme_auth(struct cfg80211_registered_device
*rdev
,
291 struct net_device
*dev
,
292 struct ieee80211_channel
*chan
,
293 enum nl80211_auth_type auth_type
,
295 const u8
*ssid
, int ssid_len
,
296 const u8
*ie
, int ie_len
,
297 const u8
*key
, int key_len
, int key_idx
);
298 int cfg80211_mlme_auth(struct cfg80211_registered_device
*rdev
,
299 struct net_device
*dev
, struct ieee80211_channel
*chan
,
300 enum nl80211_auth_type auth_type
, const u8
*bssid
,
301 const u8
*ssid
, int ssid_len
,
302 const u8
*ie
, int ie_len
,
303 const u8
*key
, int key_len
, int key_idx
);
304 int __cfg80211_mlme_assoc(struct cfg80211_registered_device
*rdev
,
305 struct net_device
*dev
,
306 struct ieee80211_channel
*chan
,
307 const u8
*bssid
, const u8
*prev_bssid
,
308 const u8
*ssid
, int ssid_len
,
309 const u8
*ie
, int ie_len
, bool use_mfp
,
310 struct cfg80211_crypto_settings
*crypt
);
311 int cfg80211_mlme_assoc(struct cfg80211_registered_device
*rdev
,
312 struct net_device
*dev
, struct ieee80211_channel
*chan
,
313 const u8
*bssid
, const u8
*prev_bssid
,
314 const u8
*ssid
, int ssid_len
,
315 const u8
*ie
, int ie_len
, bool use_mfp
,
316 struct cfg80211_crypto_settings
*crypt
);
317 int __cfg80211_mlme_deauth(struct cfg80211_registered_device
*rdev
,
318 struct net_device
*dev
, const u8
*bssid
,
319 const u8
*ie
, int ie_len
, u16 reason
);
320 int cfg80211_mlme_deauth(struct cfg80211_registered_device
*rdev
,
321 struct net_device
*dev
, const u8
*bssid
,
322 const u8
*ie
, int ie_len
, u16 reason
);
323 int cfg80211_mlme_disassoc(struct cfg80211_registered_device
*rdev
,
324 struct net_device
*dev
, const u8
*bssid
,
325 const u8
*ie
, int ie_len
, u16 reason
);
326 void cfg80211_mlme_down(struct cfg80211_registered_device
*rdev
,
327 struct net_device
*dev
);
328 void __cfg80211_connect_result(struct net_device
*dev
, const u8
*bssid
,
329 const u8
*req_ie
, size_t req_ie_len
,
330 const u8
*resp_ie
, size_t resp_ie_len
,
331 u16 status
, bool wextev
,
332 struct cfg80211_bss
*bss
);
335 int __cfg80211_connect(struct cfg80211_registered_device
*rdev
,
336 struct net_device
*dev
,
337 struct cfg80211_connect_params
*connect
,
338 struct cfg80211_cached_keys
*connkeys
);
339 int cfg80211_connect(struct cfg80211_registered_device
*rdev
,
340 struct net_device
*dev
,
341 struct cfg80211_connect_params
*connect
,
342 struct cfg80211_cached_keys
*connkeys
);
343 int __cfg80211_disconnect(struct cfg80211_registered_device
*rdev
,
344 struct net_device
*dev
, u16 reason
,
346 int cfg80211_disconnect(struct cfg80211_registered_device
*rdev
,
347 struct net_device
*dev
, u16 reason
,
349 void __cfg80211_roamed(struct wireless_dev
*wdev
, const u8
*bssid
,
350 const u8
*req_ie
, size_t req_ie_len
,
351 const u8
*resp_ie
, size_t resp_ie_len
);
352 int cfg80211_mgd_wext_connect(struct cfg80211_registered_device
*rdev
,
353 struct wireless_dev
*wdev
);
355 void cfg80211_conn_work(struct work_struct
*work
);
357 /* internal helpers */
358 int cfg80211_validate_key_settings(struct cfg80211_registered_device
*rdev
,
359 struct key_params
*params
, int key_idx
,
361 void __cfg80211_disconnected(struct net_device
*dev
, const u8
*ie
,
362 size_t ie_len
, u16 reason
, bool from_ap
);
363 void cfg80211_sme_scan_done(struct net_device
*dev
);
364 void cfg80211_sme_rx_auth(struct net_device
*dev
, const u8
*buf
, size_t len
);
365 void cfg80211_sme_disassoc(struct net_device
*dev
, int idx
);
366 void __cfg80211_scan_done(struct work_struct
*wk
);
367 void cfg80211_upload_connect_keys(struct wireless_dev
*wdev
);
369 #endif /* __NET_WIRELESS_CORE_H */