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(struct net *net, int ifindex);
175 int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
178 static inline void cfg80211_lock_rdev(struct cfg80211_registered_device *rdev)
180 mutex_lock(&rdev->mtx);
183 static inline void cfg80211_unlock_rdev(struct cfg80211_registered_device *rdev)
185 BUG_ON(IS_ERR(rdev) || !rdev);
186 mutex_unlock(&rdev->mtx);
189 static inline void wdev_lock(struct wireless_dev *wdev)
192 mutex_lock(&wdev->mtx);
193 __acquire(wdev->mtx);
196 static inline void wdev_unlock(struct wireless_dev *wdev)
199 __release(wdev->mtx);
200 mutex_unlock(&wdev->mtx);
203 #define ASSERT_RDEV_LOCK(rdev) WARN_ON(!mutex_is_locked(&(rdev)->mtx));
204 #define ASSERT_WDEV_LOCK(wdev) WARN_ON(!mutex_is_locked(&(wdev)->mtx));
206 enum cfg80211_event_type {
207 EVENT_CONNECT_RESULT,
213 struct cfg80211_event {
214 struct list_head list;
215 enum cfg80211_event_type type;
244 struct cfg80211_cached_keys {
245 struct key_params params[6];
246 u8 data[6][WLAN_MAX_KEY_LEN];
252 extern void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
254 extern int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
257 void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
258 void wiphy_update_regulatory(struct wiphy *wiphy,
259 enum nl80211_reg_initiator setby);
261 void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
262 void cfg80211_bss_age(struct cfg80211_registered_device *dev,
263 unsigned long age_secs);
266 int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
267 struct net_device *dev,
268 struct cfg80211_ibss_params *params,
269 struct cfg80211_cached_keys *connkeys);
270 int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
271 struct net_device *dev,
272 struct cfg80211_ibss_params *params,
273 struct cfg80211_cached_keys *connkeys);
274 void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
275 int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
276 struct net_device *dev, bool nowext);
277 void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid);
278 int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
279 struct wireless_dev *wdev);
282 int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
283 struct net_device *dev,
284 struct ieee80211_channel *chan,
285 enum nl80211_auth_type auth_type,
287 const u8 *ssid, int ssid_len,
288 const u8 *ie, int ie_len,
289 const u8 *key, int key_len, int key_idx);
290 int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
291 struct net_device *dev, struct ieee80211_channel *chan,
292 enum nl80211_auth_type auth_type, const u8 *bssid,
293 const u8 *ssid, int ssid_len,
294 const u8 *ie, int ie_len,
295 const u8 *key, int key_len, int key_idx);
296 int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
297 struct net_device *dev,
298 struct ieee80211_channel *chan,
299 const u8 *bssid, const u8 *prev_bssid,
300 const u8 *ssid, int ssid_len,
301 const u8 *ie, int ie_len, bool use_mfp,
302 struct cfg80211_crypto_settings *crypt);
303 int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
304 struct net_device *dev, struct ieee80211_channel *chan,
305 const u8 *bssid, const u8 *prev_bssid,
306 const u8 *ssid, int ssid_len,
307 const u8 *ie, int ie_len, bool use_mfp,
308 struct cfg80211_crypto_settings *crypt);
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_deauth(struct cfg80211_registered_device *rdev,
313 struct net_device *dev, const u8 *bssid,
314 const u8 *ie, int ie_len, u16 reason);
315 int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
316 struct net_device *dev, const u8 *bssid,
317 const u8 *ie, int ie_len, u16 reason);
318 void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
319 struct net_device *dev);
320 void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
321 const u8 *req_ie, size_t req_ie_len,
322 const u8 *resp_ie, size_t resp_ie_len,
323 u16 status, bool wextev);
326 int __cfg80211_connect(struct cfg80211_registered_device *rdev,
327 struct net_device *dev,
328 struct cfg80211_connect_params *connect,
329 struct cfg80211_cached_keys *connkeys);
330 int cfg80211_connect(struct cfg80211_registered_device *rdev,
331 struct net_device *dev,
332 struct cfg80211_connect_params *connect,
333 struct cfg80211_cached_keys *connkeys);
334 int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
335 struct net_device *dev, u16 reason,
337 int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
338 struct net_device *dev, u16 reason,
340 void __cfg80211_roamed(struct wireless_dev *wdev, const u8 *bssid,
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 void cfg80211_conn_work(struct work_struct *work);
348 /* internal helpers */
349 int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
350 struct key_params *params, int key_idx,
352 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
353 size_t ie_len, u16 reason, bool from_ap);
354 void cfg80211_sme_scan_done(struct net_device *dev);
355 void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
356 void cfg80211_sme_disassoc(struct net_device *dev, int idx);
357 void __cfg80211_scan_done(struct work_struct *wk);
358 void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
360 #endif /* __NET_WIRELESS_CORE_H */