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;
52 int devlist_generation;
56 struct list_head bss_list;
57 struct rb_root bss_tree;
59 struct cfg80211_scan_request *scan_req; /* protected by RTNL */
60 unsigned long suspend_at;
61 struct work_struct scan_done_wk;
63 #ifdef CONFIG_NL80211_TESTMODE
64 struct genl_info *testmode_info;
67 struct work_struct conn_work;
68 struct work_struct event_work;
71 struct ieee80211_channel *channel;
73 #ifdef CONFIG_CFG80211_DEBUGFS
75 struct wiphy_debugfsdentries {
76 struct dentry *rts_threshold;
77 struct dentry *fragmentation_threshold;
78 struct dentry *short_retry_limit;
79 struct dentry *long_retry_limit;
80 struct dentry *ht40allow_map;
84 /* must be last because of the way we do wiphy_priv(),
85 * and it should at least be aligned to NETDEV_ALIGN */
86 struct wiphy wiphy __attribute__((__aligned__(NETDEV_ALIGN)));
90 struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy)
93 return container_of(wiphy, struct cfg80211_registered_device, wiphy);
96 /* Note 0 is valid, hence phy0 */
98 bool wiphy_idx_valid(int wiphy_idx)
100 return (wiphy_idx >= 0);
103 extern struct mutex cfg80211_mutex;
104 extern struct list_head cfg80211_rdev_list;
105 extern int cfg80211_rdev_list_generation;
107 #define assert_cfg80211_lock() WARN_ON(!mutex_is_locked(&cfg80211_mutex))
110 * You can use this to mark a wiphy_idx as not having an associated wiphy.
111 * It guarantees cfg80211_rdev_by_wiphy_idx(wiphy_idx) will return NULL
113 #define WIPHY_IDX_STALE -1
115 struct cfg80211_internal_bss {
116 struct list_head list;
123 /* must be last because of priv member */
124 struct cfg80211_bss pub;
127 static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub)
129 return container_of(pub, struct cfg80211_internal_bss, pub);
132 static inline void cfg80211_ref_bss(struct cfg80211_internal_bss *bss)
137 static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
139 atomic_inc(&bss->hold);
142 static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
144 int r = atomic_dec_return(&bss->hold);
149 struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
150 int get_wiphy_idx(struct wiphy *wiphy);
152 struct cfg80211_registered_device *
153 __cfg80211_rdev_from_info(struct genl_info *info);
156 * This function returns a pointer to the driver
157 * that the genl_info item that is passed refers to.
158 * If successful, it returns non-NULL and also locks
159 * the driver's mutex!
161 * This means that you need to call cfg80211_unlock_rdev()
162 * before being allowed to acquire &cfg80211_mutex!
164 * This is necessary because we need to lock the global
165 * mutex to get an item off the list safely, and then
166 * we lock the rdev mutex so it doesn't go away under us.
168 * We don't want to keep cfg80211_mutex locked
169 * for all the time in order to allow requests on
170 * other interfaces to go through at the same time.
172 * The result of this can be a PTR_ERR and hence must
173 * be checked with IS_ERR() for errors.
175 extern struct cfg80211_registered_device *
176 cfg80211_get_dev_from_info(struct genl_info *info);
178 /* requires cfg80211_rdev_mutex to be held! */
179 struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
181 /* identical to cfg80211_get_dev_from_info but only operate on ifindex */
182 extern struct cfg80211_registered_device *
183 cfg80211_get_dev_from_ifindex(struct net *net, int ifindex);
185 int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
188 static inline void cfg80211_lock_rdev(struct cfg80211_registered_device *rdev)
190 mutex_lock(&rdev->mtx);
193 static inline void cfg80211_unlock_rdev(struct cfg80211_registered_device *rdev)
195 BUG_ON(IS_ERR(rdev) || !rdev);
196 mutex_unlock(&rdev->mtx);
199 static inline void wdev_lock(struct wireless_dev *wdev)
202 mutex_lock(&wdev->mtx);
203 __acquire(wdev->mtx);
206 static inline void wdev_unlock(struct wireless_dev *wdev)
209 __release(wdev->mtx);
210 mutex_unlock(&wdev->mtx);
213 #define ASSERT_RDEV_LOCK(rdev) WARN_ON(!mutex_is_locked(&(rdev)->mtx));
214 #define ASSERT_WDEV_LOCK(wdev) WARN_ON(!mutex_is_locked(&(wdev)->mtx));
216 enum cfg80211_event_type {
217 EVENT_CONNECT_RESULT,
223 struct cfg80211_event {
224 struct list_head list;
225 enum cfg80211_event_type type;
254 struct cfg80211_cached_keys {
255 struct key_params params[6];
256 u8 data[6][WLAN_MAX_KEY_LEN];
262 extern void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
264 extern int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
267 void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
268 void wiphy_update_regulatory(struct wiphy *wiphy,
269 enum nl80211_reg_initiator setby);
271 void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
272 void cfg80211_bss_age(struct cfg80211_registered_device *dev,
273 unsigned long age_secs);
276 int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
277 struct net_device *dev,
278 struct cfg80211_ibss_params *params,
279 struct cfg80211_cached_keys *connkeys);
280 int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
281 struct net_device *dev,
282 struct cfg80211_ibss_params *params,
283 struct cfg80211_cached_keys *connkeys);
284 void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
285 int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
286 struct net_device *dev, bool nowext);
287 void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid);
288 int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
289 struct wireless_dev *wdev);
292 int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
293 struct net_device *dev,
294 struct ieee80211_channel *chan,
295 enum nl80211_auth_type auth_type,
297 const u8 *ssid, int ssid_len,
298 const u8 *ie, int ie_len,
299 const u8 *key, int key_len, int key_idx);
300 int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
301 struct net_device *dev, struct ieee80211_channel *chan,
302 enum nl80211_auth_type auth_type, const u8 *bssid,
303 const u8 *ssid, int ssid_len,
304 const u8 *ie, int ie_len,
305 const u8 *key, int key_len, int key_idx);
306 int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
307 struct net_device *dev,
308 struct ieee80211_channel *chan,
309 const u8 *bssid, const u8 *prev_bssid,
310 const u8 *ssid, int ssid_len,
311 const u8 *ie, int ie_len, bool use_mfp,
312 struct cfg80211_crypto_settings *crypt);
313 int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
314 struct net_device *dev, struct ieee80211_channel *chan,
315 const u8 *bssid, const u8 *prev_bssid,
316 const u8 *ssid, int ssid_len,
317 const u8 *ie, int ie_len, bool use_mfp,
318 struct cfg80211_crypto_settings *crypt);
319 int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
320 struct net_device *dev, const u8 *bssid,
321 const u8 *ie, int ie_len, u16 reason);
322 int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
323 struct net_device *dev, const u8 *bssid,
324 const u8 *ie, int ie_len, u16 reason);
325 int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
326 struct net_device *dev, const u8 *bssid,
327 const u8 *ie, int ie_len, u16 reason);
328 void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
329 struct net_device *dev);
330 void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
331 const u8 *req_ie, size_t req_ie_len,
332 const u8 *resp_ie, size_t resp_ie_len,
333 u16 status, bool wextev,
334 struct cfg80211_bss *bss);
337 int __cfg80211_connect(struct cfg80211_registered_device *rdev,
338 struct net_device *dev,
339 struct cfg80211_connect_params *connect,
340 struct cfg80211_cached_keys *connkeys,
341 const u8 *prev_bssid);
342 int cfg80211_connect(struct cfg80211_registered_device *rdev,
343 struct net_device *dev,
344 struct cfg80211_connect_params *connect,
345 struct cfg80211_cached_keys *connkeys);
346 int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
347 struct net_device *dev, u16 reason,
349 int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
350 struct net_device *dev, u16 reason,
352 void __cfg80211_roamed(struct wireless_dev *wdev, const u8 *bssid,
353 const u8 *req_ie, size_t req_ie_len,
354 const u8 *resp_ie, size_t resp_ie_len);
355 int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
356 struct wireless_dev *wdev);
358 void cfg80211_conn_work(struct work_struct *work);
359 bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev);
361 /* internal helpers */
362 int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
363 struct key_params *params, int key_idx,
365 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
366 size_t ie_len, u16 reason, bool from_ap);
367 void cfg80211_sme_scan_done(struct net_device *dev);
368 void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
369 void cfg80211_sme_disassoc(struct net_device *dev, int idx);
370 void __cfg80211_scan_done(struct work_struct *wk);
371 void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev);
372 void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
374 struct ieee80211_channel *
375 rdev_fixed_channel(struct cfg80211_registered_device *rdev,
376 struct wireless_dev *for_wdev);
377 int rdev_set_freq(struct cfg80211_registered_device *rdev,
378 struct wireless_dev *for_wdev,
379 int freq, enum nl80211_channel_type channel_type);
381 #endif /* __NET_WIRELESS_CORE_H */