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
;
69 #ifdef CONFIG_CFG80211_DEBUGFS
71 struct wiphy_debugfsdentries
{
72 struct dentry
*rts_threshold
;
73 struct dentry
*fragmentation_threshold
;
74 struct dentry
*short_retry_limit
;
75 struct dentry
*long_retry_limit
;
76 struct dentry
*ht40allow_map
;
80 /* must be last because of the way we do wiphy_priv(),
81 * and it should at least be aligned to NETDEV_ALIGN */
82 struct wiphy wiphy
__attribute__((__aligned__(NETDEV_ALIGN
)));
86 struct cfg80211_registered_device
*wiphy_to_dev(struct wiphy
*wiphy
)
89 return container_of(wiphy
, struct cfg80211_registered_device
, wiphy
);
92 /* Note 0 is valid, hence phy0 */
94 bool wiphy_idx_valid(int wiphy_idx
)
96 return (wiphy_idx
>= 0);
99 extern struct mutex cfg80211_mutex
;
100 extern struct list_head cfg80211_rdev_list
;
102 #define assert_cfg80211_lock() WARN_ON(!mutex_is_locked(&cfg80211_mutex))
105 * You can use this to mark a wiphy_idx as not having an associated wiphy.
106 * It guarantees cfg80211_rdev_by_wiphy_idx(wiphy_idx) will return NULL
108 #define WIPHY_IDX_STALE -1
110 struct cfg80211_internal_bss
{
111 struct list_head list
;
118 /* must be last because of priv member */
119 struct cfg80211_bss pub
;
122 static inline struct cfg80211_internal_bss
*bss_from_pub(struct cfg80211_bss
*pub
)
124 return container_of(pub
, struct cfg80211_internal_bss
, pub
);
127 static inline void cfg80211_hold_bss(struct cfg80211_internal_bss
*bss
)
129 atomic_inc(&bss
->hold
);
132 static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss
*bss
)
134 int r
= atomic_dec_return(&bss
->hold
);
139 struct cfg80211_registered_device
*cfg80211_rdev_by_wiphy_idx(int wiphy_idx
);
140 int get_wiphy_idx(struct wiphy
*wiphy
);
142 struct cfg80211_registered_device
*
143 __cfg80211_rdev_from_info(struct genl_info
*info
);
146 * This function returns a pointer to the driver
147 * that the genl_info item that is passed refers to.
148 * If successful, it returns non-NULL and also locks
149 * the driver's mutex!
151 * This means that you need to call cfg80211_unlock_rdev()
152 * before being allowed to acquire &cfg80211_mutex!
154 * This is necessary because we need to lock the global
155 * mutex to get an item off the list safely, and then
156 * we lock the rdev mutex so it doesn't go away under us.
158 * We don't want to keep cfg80211_mutex locked
159 * for all the time in order to allow requests on
160 * other interfaces to go through at the same time.
162 * The result of this can be a PTR_ERR and hence must
163 * be checked with IS_ERR() for errors.
165 extern struct cfg80211_registered_device
*
166 cfg80211_get_dev_from_info(struct genl_info
*info
);
168 /* requires cfg80211_rdev_mutex to be held! */
169 struct wiphy
*wiphy_idx_to_wiphy(int wiphy_idx
);
171 /* identical to cfg80211_get_dev_from_info but only operate on ifindex */
172 extern struct cfg80211_registered_device
*
173 cfg80211_get_dev_from_ifindex(int ifindex
);
175 static inline void cfg80211_lock_rdev(struct cfg80211_registered_device
*rdev
)
177 mutex_lock(&rdev
->mtx
);
180 static inline void cfg80211_unlock_rdev(struct cfg80211_registered_device
*rdev
)
182 BUG_ON(IS_ERR(rdev
) || !rdev
);
183 mutex_unlock(&rdev
->mtx
);
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_RDEV_LOCK(rdev) WARN_ON(!mutex_is_locked(&(rdev)->mtx));
201 #define ASSERT_WDEV_LOCK(wdev) WARN_ON(!mutex_is_locked(&(wdev)->mtx));
203 enum cfg80211_event_type
{
204 EVENT_CONNECT_RESULT
,
210 struct cfg80211_event
{
211 struct list_head list
;
212 enum cfg80211_event_type type
;
241 struct cfg80211_cached_keys
{
242 struct key_params params
[6];
243 u8 data
[6][WLAN_MAX_KEY_LEN
];
249 extern void cfg80211_dev_free(struct cfg80211_registered_device
*rdev
);
251 extern int cfg80211_dev_rename(struct cfg80211_registered_device
*rdev
,
254 void ieee80211_set_bitrate_flags(struct wiphy
*wiphy
);
255 void wiphy_update_regulatory(struct wiphy
*wiphy
,
256 enum nl80211_reg_initiator setby
);
258 void cfg80211_bss_expire(struct cfg80211_registered_device
*dev
);
259 void cfg80211_bss_age(struct cfg80211_registered_device
*dev
,
260 unsigned long age_secs
);
263 int __cfg80211_join_ibss(struct cfg80211_registered_device
*rdev
,
264 struct net_device
*dev
,
265 struct cfg80211_ibss_params
*params
,
266 struct cfg80211_cached_keys
*connkeys
);
267 int cfg80211_join_ibss(struct cfg80211_registered_device
*rdev
,
268 struct net_device
*dev
,
269 struct cfg80211_ibss_params
*params
,
270 struct cfg80211_cached_keys
*connkeys
);
271 void cfg80211_clear_ibss(struct net_device
*dev
, bool nowext
);
272 int cfg80211_leave_ibss(struct cfg80211_registered_device
*rdev
,
273 struct net_device
*dev
, bool nowext
);
274 void __cfg80211_ibss_joined(struct net_device
*dev
, const u8
*bssid
);
275 int cfg80211_ibss_wext_join(struct cfg80211_registered_device
*rdev
,
276 struct wireless_dev
*wdev
);
279 int __cfg80211_mlme_auth(struct cfg80211_registered_device
*rdev
,
280 struct net_device
*dev
,
281 struct ieee80211_channel
*chan
,
282 enum nl80211_auth_type auth_type
,
284 const u8
*ssid
, int ssid_len
,
285 const u8
*ie
, int ie_len
,
286 const u8
*key
, int key_len
, int key_idx
);
287 int cfg80211_mlme_auth(struct cfg80211_registered_device
*rdev
,
288 struct net_device
*dev
, struct ieee80211_channel
*chan
,
289 enum nl80211_auth_type auth_type
, const u8
*bssid
,
290 const u8
*ssid
, int ssid_len
,
291 const u8
*ie
, int ie_len
,
292 const u8
*key
, int key_len
, int key_idx
);
293 int __cfg80211_mlme_assoc(struct cfg80211_registered_device
*rdev
,
294 struct net_device
*dev
,
295 struct ieee80211_channel
*chan
,
296 const u8
*bssid
, const u8
*prev_bssid
,
297 const u8
*ssid
, int ssid_len
,
298 const u8
*ie
, int ie_len
, bool use_mfp
,
299 struct cfg80211_crypto_settings
*crypt
);
300 int cfg80211_mlme_assoc(struct cfg80211_registered_device
*rdev
,
301 struct net_device
*dev
, struct ieee80211_channel
*chan
,
302 const u8
*bssid
, const u8
*prev_bssid
,
303 const u8
*ssid
, int ssid_len
,
304 const u8
*ie
, int ie_len
, bool use_mfp
,
305 struct cfg80211_crypto_settings
*crypt
);
306 int __cfg80211_mlme_deauth(struct cfg80211_registered_device
*rdev
,
307 struct net_device
*dev
, const u8
*bssid
,
308 const u8
*ie
, int ie_len
, u16 reason
);
309 int cfg80211_mlme_deauth(struct cfg80211_registered_device
*rdev
,
310 struct net_device
*dev
, const u8
*bssid
,
311 const u8
*ie
, int ie_len
, u16 reason
);
312 int cfg80211_mlme_disassoc(struct cfg80211_registered_device
*rdev
,
313 struct net_device
*dev
, const u8
*bssid
,
314 const u8
*ie
, int ie_len
, u16 reason
);
315 void cfg80211_mlme_down(struct cfg80211_registered_device
*rdev
,
316 struct net_device
*dev
);
317 void __cfg80211_connect_result(struct net_device
*dev
, const u8
*bssid
,
318 const u8
*req_ie
, size_t req_ie_len
,
319 const u8
*resp_ie
, size_t resp_ie_len
,
320 u16 status
, bool wextev
);
323 int __cfg80211_connect(struct cfg80211_registered_device
*rdev
,
324 struct net_device
*dev
,
325 struct cfg80211_connect_params
*connect
,
326 struct cfg80211_cached_keys
*connkeys
);
327 int cfg80211_connect(struct cfg80211_registered_device
*rdev
,
328 struct net_device
*dev
,
329 struct cfg80211_connect_params
*connect
,
330 struct cfg80211_cached_keys
*connkeys
);
331 int __cfg80211_disconnect(struct cfg80211_registered_device
*rdev
,
332 struct net_device
*dev
, u16 reason
,
334 int cfg80211_disconnect(struct cfg80211_registered_device
*rdev
,
335 struct net_device
*dev
, u16 reason
,
337 void __cfg80211_roamed(struct wireless_dev
*wdev
, const u8
*bssid
,
338 const u8
*req_ie
, size_t req_ie_len
,
339 const u8
*resp_ie
, size_t resp_ie_len
);
340 int cfg80211_mgd_wext_connect(struct cfg80211_registered_device
*rdev
,
341 struct wireless_dev
*wdev
);
343 void cfg80211_conn_work(struct work_struct
*work
);
345 /* internal helpers */
346 int cfg80211_validate_key_settings(struct cfg80211_registered_device
*rdev
,
347 struct key_params
*params
, int key_idx
,
349 void __cfg80211_disconnected(struct net_device
*dev
, const u8
*ie
,
350 size_t ie_len
, u16 reason
, bool from_ap
);
351 void cfg80211_sme_scan_done(struct net_device
*dev
);
352 void cfg80211_sme_rx_auth(struct net_device
*dev
, const u8
*buf
, size_t len
);
353 void cfg80211_sme_disassoc(struct net_device
*dev
, int idx
);
354 void __cfg80211_scan_done(struct work_struct
*wk
);
355 void cfg80211_upload_connect_keys(struct wireless_dev
*wdev
);
357 #endif /* __NET_WIRELESS_CORE_H */