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Commit | Line | Data |
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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; | |
52 | ||
2a519311 JB |
53 | /* BSSes/scanning */ |
54 | spinlock_t bss_lock; | |
55 | struct list_head bss_list; | |
56 | struct rb_root bss_tree; | |
57 | u32 bss_generation; | |
58 | struct cfg80211_scan_request *scan_req; /* protected by RTNL */ | |
cb3a8eec | 59 | unsigned long suspend_at; |
667503dd | 60 | struct work_struct scan_done_wk; |
2a519311 | 61 | |
aff89a9b JB |
62 | #ifdef CONFIG_NL80211_TESTMODE |
63 | struct genl_info *testmode_info; | |
64 | #endif | |
65 | ||
6829c878 | 66 | struct work_struct conn_work; |
667503dd | 67 | struct work_struct event_work; |
6829c878 | 68 | |
e43e820c | 69 | #ifdef CONFIG_CFG80211_DEBUGFS |
1ac61302 LR |
70 | /* Debugfs entries */ |
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; | |
80a3511d | 76 | struct dentry *ht40allow_map; |
1ac61302 LR |
77 | } debugfs; |
78 | #endif | |
79 | ||
704232c2 JB |
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))); | |
83 | }; | |
84 | ||
85 | static inline | |
86 | struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy) | |
87 | { | |
88 | BUG_ON(!wiphy); | |
89 | return container_of(wiphy, struct cfg80211_registered_device, wiphy); | |
90 | } | |
91 | ||
85fd129a LR |
92 | /* Note 0 is valid, hence phy0 */ |
93 | static inline | |
94 | bool wiphy_idx_valid(int wiphy_idx) | |
95 | { | |
96 | return (wiphy_idx >= 0); | |
97 | } | |
98 | ||
a1794390 | 99 | extern struct mutex cfg80211_mutex; |
79c97e97 | 100 | extern struct list_head cfg80211_rdev_list; |
704232c2 | 101 | |
7edfab7a | 102 | #define assert_cfg80211_lock() WARN_ON(!mutex_is_locked(&cfg80211_mutex)) |
761cf7ec | 103 | |
806a9e39 LR |
104 | /* |
105 | * You can use this to mark a wiphy_idx as not having an associated wiphy. | |
79c97e97 | 106 | * It guarantees cfg80211_rdev_by_wiphy_idx(wiphy_idx) will return NULL |
806a9e39 LR |
107 | */ |
108 | #define WIPHY_IDX_STALE -1 | |
109 | ||
2a519311 JB |
110 | struct cfg80211_internal_bss { |
111 | struct list_head list; | |
112 | struct rb_node rbn; | |
113 | unsigned long ts; | |
114 | struct kref ref; | |
19957bb3 JB |
115 | atomic_t hold; |
116 | bool ies_allocated; | |
a08c1c1a | 117 | |
2a519311 JB |
118 | /* must be last because of priv member */ |
119 | struct cfg80211_bss pub; | |
120 | }; | |
121 | ||
19957bb3 JB |
122 | static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub) |
123 | { | |
124 | return container_of(pub, struct cfg80211_internal_bss, pub); | |
125 | } | |
126 | ||
127 | static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss) | |
128 | { | |
129 | atomic_inc(&bss->hold); | |
130 | } | |
131 | ||
132 | static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss) | |
133 | { | |
134 | int r = atomic_dec_return(&bss->hold); | |
135 | WARN_ON(r < 0); | |
136 | } | |
137 | ||
138 | ||
79c97e97 | 139 | struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx); |
806a9e39 LR |
140 | int get_wiphy_idx(struct wiphy *wiphy); |
141 | ||
4bbf4d56 | 142 | struct cfg80211_registered_device * |
79c97e97 | 143 | __cfg80211_rdev_from_info(struct genl_info *info); |
4bbf4d56 | 144 | |
55682965 JB |
145 | /* |
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! | |
150 | * | |
4d0c8aea | 151 | * This means that you need to call cfg80211_unlock_rdev() |
a1794390 | 152 | * before being allowed to acquire &cfg80211_mutex! |
55682965 JB |
153 | * |
154 | * This is necessary because we need to lock the global | |
155 | * mutex to get an item off the list safely, and then | |
79c97e97 | 156 | * we lock the rdev mutex so it doesn't go away under us. |
55682965 | 157 | * |
a1794390 | 158 | * We don't want to keep cfg80211_mutex locked |
55682965 JB |
159 | * for all the time in order to allow requests on |
160 | * other interfaces to go through at the same time. | |
161 | * | |
162 | * The result of this can be a PTR_ERR and hence must | |
163 | * be checked with IS_ERR() for errors. | |
164 | */ | |
165 | extern struct cfg80211_registered_device * | |
166 | cfg80211_get_dev_from_info(struct genl_info *info); | |
167 | ||
79c97e97 | 168 | /* requires cfg80211_rdev_mutex to be held! */ |
806a9e39 LR |
169 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx); |
170 | ||
55682965 JB |
171 | /* identical to cfg80211_get_dev_from_info but only operate on ifindex */ |
172 | extern struct cfg80211_registered_device * | |
463d0183 JB |
173 | cfg80211_get_dev_from_ifindex(struct net *net, int ifindex); |
174 | ||
175 | int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, | |
176 | struct net *net); | |
55682965 | 177 | |
79c97e97 | 178 | static inline void cfg80211_lock_rdev(struct cfg80211_registered_device *rdev) |
667503dd | 179 | { |
79c97e97 | 180 | mutex_lock(&rdev->mtx); |
667503dd JB |
181 | } |
182 | ||
79c97e97 | 183 | static inline void cfg80211_unlock_rdev(struct cfg80211_registered_device *rdev) |
4d0c8aea | 184 | { |
79c97e97 JB |
185 | BUG_ON(IS_ERR(rdev) || !rdev); |
186 | mutex_unlock(&rdev->mtx); | |
4d0c8aea | 187 | } |
55682965 | 188 | |
667503dd JB |
189 | static inline void wdev_lock(struct wireless_dev *wdev) |
190 | __acquires(wdev) | |
191 | { | |
192 | mutex_lock(&wdev->mtx); | |
193 | __acquire(wdev->mtx); | |
194 | } | |
195 | ||
196 | static inline void wdev_unlock(struct wireless_dev *wdev) | |
197 | __releases(wdev) | |
198 | { | |
199 | __release(wdev->mtx); | |
200 | mutex_unlock(&wdev->mtx); | |
201 | } | |
202 | ||
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)); | |
205 | ||
206 | enum cfg80211_event_type { | |
207 | EVENT_CONNECT_RESULT, | |
208 | EVENT_ROAMED, | |
209 | EVENT_DISCONNECTED, | |
210 | EVENT_IBSS_JOINED, | |
211 | }; | |
212 | ||
213 | struct cfg80211_event { | |
214 | struct list_head list; | |
215 | enum cfg80211_event_type type; | |
216 | ||
217 | union { | |
218 | struct { | |
219 | u8 bssid[ETH_ALEN]; | |
220 | const u8 *req_ie; | |
221 | const u8 *resp_ie; | |
222 | size_t req_ie_len; | |
223 | size_t resp_ie_len; | |
224 | u16 status; | |
225 | } cr; | |
226 | struct { | |
227 | u8 bssid[ETH_ALEN]; | |
228 | const u8 *req_ie; | |
229 | const u8 *resp_ie; | |
230 | size_t req_ie_len; | |
231 | size_t resp_ie_len; | |
232 | } rm; | |
233 | struct { | |
234 | const u8 *ie; | |
235 | size_t ie_len; | |
236 | u16 reason; | |
237 | } dc; | |
238 | struct { | |
239 | u8 bssid[ETH_ALEN]; | |
240 | } ij; | |
241 | }; | |
242 | }; | |
243 | ||
fffd0934 JB |
244 | struct cfg80211_cached_keys { |
245 | struct key_params params[6]; | |
246 | u8 data[6][WLAN_MAX_KEY_LEN]; | |
247 | int def, defmgmt; | |
248 | }; | |
249 | ||
667503dd | 250 | |
704232c2 | 251 | /* free object */ |
79c97e97 | 252 | extern void cfg80211_dev_free(struct cfg80211_registered_device *rdev); |
704232c2 | 253 | |
79c97e97 | 254 | extern int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, |
55682965 JB |
255 | char *newname); |
256 | ||
8318d78a | 257 | void ieee80211_set_bitrate_flags(struct wiphy *wiphy); |
7db90f4a LR |
258 | void wiphy_update_regulatory(struct wiphy *wiphy, |
259 | enum nl80211_reg_initiator setby); | |
8318d78a | 260 | |
2a519311 | 261 | void cfg80211_bss_expire(struct cfg80211_registered_device *dev); |
cb3a8eec DW |
262 | void cfg80211_bss_age(struct cfg80211_registered_device *dev, |
263 | unsigned long age_secs); | |
2a519311 | 264 | |
04a773ad | 265 | /* IBSS */ |
667503dd JB |
266 | int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev, |
267 | struct net_device *dev, | |
fffd0934 JB |
268 | struct cfg80211_ibss_params *params, |
269 | struct cfg80211_cached_keys *connkeys); | |
04a773ad JB |
270 | int cfg80211_join_ibss(struct cfg80211_registered_device *rdev, |
271 | struct net_device *dev, | |
fffd0934 JB |
272 | struct cfg80211_ibss_params *params, |
273 | struct cfg80211_cached_keys *connkeys); | |
9d308429 | 274 | void cfg80211_clear_ibss(struct net_device *dev, bool nowext); |
04a773ad | 275 | int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, |
9d308429 | 276 | struct net_device *dev, bool nowext); |
667503dd | 277 | void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid); |
fffd0934 JB |
278 | int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev, |
279 | struct wireless_dev *wdev); | |
04a773ad | 280 | |
19957bb3 | 281 | /* MLME */ |
667503dd JB |
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, | |
286 | const u8 *bssid, | |
287 | const u8 *ssid, int ssid_len, | |
fffd0934 JB |
288 | const u8 *ie, int ie_len, |
289 | const u8 *key, int key_len, int key_idx); | |
19957bb3 JB |
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, | |
fffd0934 JB |
294 | const u8 *ie, int ie_len, |
295 | const u8 *key, int key_len, int key_idx); | |
667503dd JB |
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); | |
19957bb3 JB |
303 | int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev, |
304 | struct net_device *dev, struct ieee80211_channel *chan, | |
3e5d7649 JB |
305 | const u8 *bssid, const u8 *prev_bssid, |
306 | const u8 *ssid, int ssid_len, | |
19957bb3 JB |
307 | const u8 *ie, int ie_len, bool use_mfp, |
308 | struct cfg80211_crypto_settings *crypt); | |
667503dd JB |
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); | |
19957bb3 JB |
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); | |
667503dd JB |
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); | |
19957bb3 | 324 | |
b23aa676 | 325 | /* SME */ |
667503dd JB |
326 | int __cfg80211_connect(struct cfg80211_registered_device *rdev, |
327 | struct net_device *dev, | |
fffd0934 JB |
328 | struct cfg80211_connect_params *connect, |
329 | struct cfg80211_cached_keys *connkeys); | |
b23aa676 SO |
330 | int cfg80211_connect(struct cfg80211_registered_device *rdev, |
331 | struct net_device *dev, | |
fffd0934 JB |
332 | struct cfg80211_connect_params *connect, |
333 | struct cfg80211_cached_keys *connkeys); | |
667503dd JB |
334 | int __cfg80211_disconnect(struct cfg80211_registered_device *rdev, |
335 | struct net_device *dev, u16 reason, | |
336 | bool wextev); | |
b23aa676 | 337 | int cfg80211_disconnect(struct cfg80211_registered_device *rdev, |
f2129354 JB |
338 | struct net_device *dev, u16 reason, |
339 | bool wextev); | |
667503dd JB |
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); | |
fffd0934 JB |
343 | int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev, |
344 | struct wireless_dev *wdev); | |
b23aa676 | 345 | |
6829c878 JB |
346 | void cfg80211_conn_work(struct work_struct *work); |
347 | ||
08645126 | 348 | /* internal helpers */ |
fffd0934 JB |
349 | int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev, |
350 | struct key_params *params, int key_idx, | |
08645126 | 351 | const u8 *mac_addr); |
667503dd | 352 | void __cfg80211_disconnected(struct net_device *dev, const u8 *ie, |
6829c878 JB |
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); | |
19957bb3 | 356 | void cfg80211_sme_disassoc(struct net_device *dev, int idx); |
667503dd | 357 | void __cfg80211_scan_done(struct work_struct *wk); |
fffd0934 | 358 | void cfg80211_upload_connect_keys(struct wireless_dev *wdev); |
08645126 | 359 | |
704232c2 | 360 | #endif /* __NET_WIRELESS_CORE_H */ |