Commit | Line | Data |
---|---|---|
704232c2 JB |
1 | /* |
2 | * Wireless configuration interface internals. | |
3 | * | |
08645126 | 4 | * Copyright 2006-2009 Johannes Berg <johannes@sipsolutions.net> |
704232c2 JB |
5 | */ |
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> | |
2a519311 JB |
11 | #include <linux/kref.h> |
12 | #include <linux/rbtree.h> | |
1ac61302 | 13 | #include <linux/debugfs.h> |
1f87f7d3 JB |
14 | #include <linux/rfkill.h> |
15 | #include <linux/workqueue.h> | |
704232c2 | 16 | #include <net/genetlink.h> |
704232c2 | 17 | #include <net/cfg80211.h> |
3f2355cb | 18 | #include "reg.h" |
704232c2 JB |
19 | |
20 | struct cfg80211_registered_device { | |
3dcf670b | 21 | const struct cfg80211_ops *ops; |
704232c2 JB |
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 */ | |
27 | struct mutex mtx; | |
28 | ||
1f87f7d3 JB |
29 | /* rfkill support */ |
30 | struct rfkill_ops rfkill_ops; | |
31 | struct rfkill *rfkill; | |
32 | struct work_struct rfkill_sync; | |
33 | ||
3f2355cb LR |
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]; | |
41 | ||
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; | |
45 | ||
704232c2 | 46 | /* wiphy index, internal only */ |
b5850a7a | 47 | int wiphy_idx; |
704232c2 JB |
48 | |
49 | /* associate netdev list */ | |
50 | struct mutex devlist_mtx; | |
51 | struct list_head netdev_list; | |
f5ea9120 | 52 | int devlist_generation; |
704232c2 | 53 | |
2a519311 JB |
54 | /* BSSes/scanning */ |
55 | spinlock_t bss_lock; | |
56 | struct list_head bss_list; | |
57 | struct rb_root bss_tree; | |
58 | u32 bss_generation; | |
59 | struct cfg80211_scan_request *scan_req; /* protected by RTNL */ | |
cb3a8eec | 60 | unsigned long suspend_at; |
667503dd | 61 | struct work_struct scan_done_wk; |
2a519311 | 62 | |
aff89a9b JB |
63 | #ifdef CONFIG_NL80211_TESTMODE |
64 | struct genl_info *testmode_info; | |
65 | #endif | |
66 | ||
6829c878 | 67 | struct work_struct conn_work; |
667503dd | 68 | struct work_struct event_work; |
6829c878 | 69 | |
0e82ffe3 JB |
70 | /* current channel */ |
71 | struct ieee80211_channel *channel; | |
72 | ||
e43e820c | 73 | #ifdef CONFIG_CFG80211_DEBUGFS |
1ac61302 LR |
74 | /* Debugfs entries */ |
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; | |
80a3511d | 80 | struct dentry *ht40allow_map; |
1ac61302 LR |
81 | } debugfs; |
82 | #endif | |
83 | ||
704232c2 JB |
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))); | |
87 | }; | |
88 | ||
89 | static inline | |
90 | struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy) | |
91 | { | |
92 | BUG_ON(!wiphy); | |
93 | return container_of(wiphy, struct cfg80211_registered_device, wiphy); | |
94 | } | |
95 | ||
85fd129a LR |
96 | /* Note 0 is valid, hence phy0 */ |
97 | static inline | |
98 | bool wiphy_idx_valid(int wiphy_idx) | |
99 | { | |
100 | return (wiphy_idx >= 0); | |
101 | } | |
102 | ||
a1794390 | 103 | extern struct mutex cfg80211_mutex; |
79c97e97 | 104 | extern struct list_head cfg80211_rdev_list; |
f5ea9120 | 105 | extern int cfg80211_rdev_list_generation; |
704232c2 | 106 | |
7edfab7a | 107 | #define assert_cfg80211_lock() WARN_ON(!mutex_is_locked(&cfg80211_mutex)) |
761cf7ec | 108 | |
806a9e39 LR |
109 | /* |
110 | * You can use this to mark a wiphy_idx as not having an associated wiphy. | |
79c97e97 | 111 | * It guarantees cfg80211_rdev_by_wiphy_idx(wiphy_idx) will return NULL |
806a9e39 LR |
112 | */ |
113 | #define WIPHY_IDX_STALE -1 | |
114 | ||
2a519311 JB |
115 | struct cfg80211_internal_bss { |
116 | struct list_head list; | |
117 | struct rb_node rbn; | |
118 | unsigned long ts; | |
119 | struct kref ref; | |
19957bb3 JB |
120 | atomic_t hold; |
121 | bool ies_allocated; | |
a08c1c1a | 122 | |
2a519311 JB |
123 | /* must be last because of priv member */ |
124 | struct cfg80211_bss pub; | |
125 | }; | |
126 | ||
19957bb3 JB |
127 | static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub) |
128 | { | |
129 | return container_of(pub, struct cfg80211_internal_bss, pub); | |
130 | } | |
131 | ||
df7fc0f9 JB |
132 | static inline void cfg80211_ref_bss(struct cfg80211_internal_bss *bss) |
133 | { | |
134 | kref_get(&bss->ref); | |
135 | } | |
136 | ||
19957bb3 JB |
137 | static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss) |
138 | { | |
139 | atomic_inc(&bss->hold); | |
140 | } | |
141 | ||
142 | static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss) | |
143 | { | |
144 | int r = atomic_dec_return(&bss->hold); | |
145 | WARN_ON(r < 0); | |
146 | } | |
147 | ||
148 | ||
79c97e97 | 149 | struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx); |
806a9e39 LR |
150 | int get_wiphy_idx(struct wiphy *wiphy); |
151 | ||
4bbf4d56 | 152 | struct cfg80211_registered_device * |
79c97e97 | 153 | __cfg80211_rdev_from_info(struct genl_info *info); |
4bbf4d56 | 154 | |
55682965 JB |
155 | /* |
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! | |
160 | * | |
4d0c8aea | 161 | * This means that you need to call cfg80211_unlock_rdev() |
a1794390 | 162 | * before being allowed to acquire &cfg80211_mutex! |
55682965 JB |
163 | * |
164 | * This is necessary because we need to lock the global | |
165 | * mutex to get an item off the list safely, and then | |
79c97e97 | 166 | * we lock the rdev mutex so it doesn't go away under us. |
55682965 | 167 | * |
a1794390 | 168 | * We don't want to keep cfg80211_mutex locked |
55682965 JB |
169 | * for all the time in order to allow requests on |
170 | * other interfaces to go through at the same time. | |
171 | * | |
172 | * The result of this can be a PTR_ERR and hence must | |
173 | * be checked with IS_ERR() for errors. | |
174 | */ | |
175 | extern struct cfg80211_registered_device * | |
176 | cfg80211_get_dev_from_info(struct genl_info *info); | |
177 | ||
79c97e97 | 178 | /* requires cfg80211_rdev_mutex to be held! */ |
806a9e39 LR |
179 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx); |
180 | ||
55682965 JB |
181 | /* identical to cfg80211_get_dev_from_info but only operate on ifindex */ |
182 | extern struct cfg80211_registered_device * | |
463d0183 JB |
183 | cfg80211_get_dev_from_ifindex(struct net *net, int ifindex); |
184 | ||
185 | int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, | |
186 | struct net *net); | |
55682965 | 187 | |
79c97e97 | 188 | static inline void cfg80211_lock_rdev(struct cfg80211_registered_device *rdev) |
667503dd | 189 | { |
79c97e97 | 190 | mutex_lock(&rdev->mtx); |
667503dd JB |
191 | } |
192 | ||
79c97e97 | 193 | static inline void cfg80211_unlock_rdev(struct cfg80211_registered_device *rdev) |
4d0c8aea | 194 | { |
79c97e97 JB |
195 | BUG_ON(IS_ERR(rdev) || !rdev); |
196 | mutex_unlock(&rdev->mtx); | |
4d0c8aea | 197 | } |
55682965 | 198 | |
667503dd JB |
199 | static inline void wdev_lock(struct wireless_dev *wdev) |
200 | __acquires(wdev) | |
201 | { | |
202 | mutex_lock(&wdev->mtx); | |
203 | __acquire(wdev->mtx); | |
204 | } | |
205 | ||
206 | static inline void wdev_unlock(struct wireless_dev *wdev) | |
207 | __releases(wdev) | |
208 | { | |
209 | __release(wdev->mtx); | |
210 | mutex_unlock(&wdev->mtx); | |
211 | } | |
212 | ||
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)); | |
215 | ||
216 | enum cfg80211_event_type { | |
217 | EVENT_CONNECT_RESULT, | |
218 | EVENT_ROAMED, | |
219 | EVENT_DISCONNECTED, | |
220 | EVENT_IBSS_JOINED, | |
221 | }; | |
222 | ||
223 | struct cfg80211_event { | |
224 | struct list_head list; | |
225 | enum cfg80211_event_type type; | |
226 | ||
227 | union { | |
228 | struct { | |
229 | u8 bssid[ETH_ALEN]; | |
230 | const u8 *req_ie; | |
231 | const u8 *resp_ie; | |
232 | size_t req_ie_len; | |
233 | size_t resp_ie_len; | |
234 | u16 status; | |
235 | } cr; | |
236 | struct { | |
237 | u8 bssid[ETH_ALEN]; | |
238 | const u8 *req_ie; | |
239 | const u8 *resp_ie; | |
240 | size_t req_ie_len; | |
241 | size_t resp_ie_len; | |
242 | } rm; | |
243 | struct { | |
244 | const u8 *ie; | |
245 | size_t ie_len; | |
246 | u16 reason; | |
247 | } dc; | |
248 | struct { | |
249 | u8 bssid[ETH_ALEN]; | |
250 | } ij; | |
251 | }; | |
252 | }; | |
253 | ||
fffd0934 JB |
254 | struct cfg80211_cached_keys { |
255 | struct key_params params[6]; | |
256 | u8 data[6][WLAN_MAX_KEY_LEN]; | |
257 | int def, defmgmt; | |
258 | }; | |
259 | ||
667503dd | 260 | |
704232c2 | 261 | /* free object */ |
79c97e97 | 262 | extern void cfg80211_dev_free(struct cfg80211_registered_device *rdev); |
704232c2 | 263 | |
79c97e97 | 264 | extern int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, |
55682965 JB |
265 | char *newname); |
266 | ||
8318d78a | 267 | void ieee80211_set_bitrate_flags(struct wiphy *wiphy); |
7db90f4a LR |
268 | void wiphy_update_regulatory(struct wiphy *wiphy, |
269 | enum nl80211_reg_initiator setby); | |
8318d78a | 270 | |
2a519311 | 271 | void cfg80211_bss_expire(struct cfg80211_registered_device *dev); |
cb3a8eec DW |
272 | void cfg80211_bss_age(struct cfg80211_registered_device *dev, |
273 | unsigned long age_secs); | |
2a519311 | 274 | |
04a773ad | 275 | /* IBSS */ |
667503dd JB |
276 | int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev, |
277 | struct net_device *dev, | |
fffd0934 JB |
278 | struct cfg80211_ibss_params *params, |
279 | struct cfg80211_cached_keys *connkeys); | |
04a773ad JB |
280 | int cfg80211_join_ibss(struct cfg80211_registered_device *rdev, |
281 | struct net_device *dev, | |
fffd0934 JB |
282 | struct cfg80211_ibss_params *params, |
283 | struct cfg80211_cached_keys *connkeys); | |
9d308429 | 284 | void cfg80211_clear_ibss(struct net_device *dev, bool nowext); |
04a773ad | 285 | int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, |
9d308429 | 286 | struct net_device *dev, bool nowext); |
667503dd | 287 | void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid); |
fffd0934 JB |
288 | int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev, |
289 | struct wireless_dev *wdev); | |
04a773ad | 290 | |
19957bb3 | 291 | /* MLME */ |
667503dd JB |
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, | |
296 | const u8 *bssid, | |
297 | const u8 *ssid, int ssid_len, | |
fffd0934 JB |
298 | const u8 *ie, int ie_len, |
299 | const u8 *key, int key_len, int key_idx); | |
19957bb3 JB |
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, | |
fffd0934 JB |
304 | const u8 *ie, int ie_len, |
305 | const u8 *key, int key_len, int key_idx); | |
667503dd JB |
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); | |
19957bb3 JB |
313 | int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev, |
314 | struct net_device *dev, struct ieee80211_channel *chan, | |
3e5d7649 JB |
315 | const u8 *bssid, const u8 *prev_bssid, |
316 | const u8 *ssid, int ssid_len, | |
19957bb3 JB |
317 | const u8 *ie, int ie_len, bool use_mfp, |
318 | struct cfg80211_crypto_settings *crypt); | |
667503dd JB |
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); | |
19957bb3 JB |
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); | |
667503dd JB |
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, | |
df7fc0f9 JB |
333 | u16 status, bool wextev, |
334 | struct cfg80211_bss *bss); | |
19957bb3 | 335 | |
b23aa676 | 336 | /* SME */ |
667503dd JB |
337 | int __cfg80211_connect(struct cfg80211_registered_device *rdev, |
338 | struct net_device *dev, | |
fffd0934 | 339 | struct cfg80211_connect_params *connect, |
f401a6f7 JB |
340 | struct cfg80211_cached_keys *connkeys, |
341 | const u8 *prev_bssid); | |
b23aa676 SO |
342 | int cfg80211_connect(struct cfg80211_registered_device *rdev, |
343 | struct net_device *dev, | |
fffd0934 JB |
344 | struct cfg80211_connect_params *connect, |
345 | struct cfg80211_cached_keys *connkeys); | |
667503dd JB |
346 | int __cfg80211_disconnect(struct cfg80211_registered_device *rdev, |
347 | struct net_device *dev, u16 reason, | |
348 | bool wextev); | |
b23aa676 | 349 | int cfg80211_disconnect(struct cfg80211_registered_device *rdev, |
f2129354 JB |
350 | struct net_device *dev, u16 reason, |
351 | bool wextev); | |
667503dd JB |
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); | |
fffd0934 JB |
355 | int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev, |
356 | struct wireless_dev *wdev); | |
b23aa676 | 357 | |
6829c878 | 358 | void cfg80211_conn_work(struct work_struct *work); |
f401a6f7 | 359 | bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev); |
6829c878 | 360 | |
08645126 | 361 | /* internal helpers */ |
fffd0934 JB |
362 | int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev, |
363 | struct key_params *params, int key_idx, | |
08645126 | 364 | const u8 *mac_addr); |
667503dd | 365 | void __cfg80211_disconnected(struct net_device *dev, const u8 *ie, |
6829c878 JB |
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); | |
19957bb3 | 369 | void cfg80211_sme_disassoc(struct net_device *dev, int idx); |
667503dd | 370 | void __cfg80211_scan_done(struct work_struct *wk); |
36e6fea8 | 371 | void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev); |
fffd0934 | 372 | void cfg80211_upload_connect_keys(struct wireless_dev *wdev); |
08645126 | 373 | |
59bbb6f7 JB |
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, | |
4b181144 | 378 | struct wireless_dev *for_wdev, |
59bbb6f7 JB |
379 | int freq, enum nl80211_channel_type channel_type); |
380 | ||
704232c2 | 381 | #endif /* __NET_WIRELESS_CORE_H */ |