Commit | Line | Data |
---|---|---|
704232c2 JB |
1 | /* |
2 | * Wireless configuration interface internals. | |
3 | * | |
5f2aa25e | 4 | * Copyright 2006-2010 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; | |
5f2aa25e | 51 | /* protected by devlist_mtx or RCU */ |
704232c2 | 52 | struct list_head netdev_list; |
f5ea9120 | 53 | int devlist_generation; |
ad002395 JB |
54 | int opencount; /* also protected by devlist_mtx */ |
55 | wait_queue_head_t dev_wait; | |
704232c2 | 56 | |
2a519311 JB |
57 | /* BSSes/scanning */ |
58 | spinlock_t bss_lock; | |
59 | struct list_head bss_list; | |
60 | struct rb_root bss_tree; | |
61 | u32 bss_generation; | |
62 | struct cfg80211_scan_request *scan_req; /* protected by RTNL */ | |
cb3a8eec | 63 | unsigned long suspend_at; |
667503dd | 64 | struct work_struct scan_done_wk; |
2a519311 | 65 | |
aff89a9b JB |
66 | #ifdef CONFIG_NL80211_TESTMODE |
67 | struct genl_info *testmode_info; | |
68 | #endif | |
69 | ||
6829c878 | 70 | struct work_struct conn_work; |
667503dd | 71 | struct work_struct event_work; |
6829c878 | 72 | |
704232c2 JB |
73 | /* must be last because of the way we do wiphy_priv(), |
74 | * and it should at least be aligned to NETDEV_ALIGN */ | |
75 | struct wiphy wiphy __attribute__((__aligned__(NETDEV_ALIGN))); | |
76 | }; | |
77 | ||
78 | static inline | |
79 | struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy) | |
80 | { | |
81 | BUG_ON(!wiphy); | |
82 | return container_of(wiphy, struct cfg80211_registered_device, wiphy); | |
83 | } | |
84 | ||
85fd129a LR |
85 | /* Note 0 is valid, hence phy0 */ |
86 | static inline | |
87 | bool wiphy_idx_valid(int wiphy_idx) | |
88 | { | |
a02cec21 | 89 | return wiphy_idx >= 0; |
85fd129a LR |
90 | } |
91 | ||
e60d7443 AB |
92 | |
93 | extern struct workqueue_struct *cfg80211_wq; | |
a1794390 | 94 | extern struct mutex cfg80211_mutex; |
79c97e97 | 95 | extern struct list_head cfg80211_rdev_list; |
f5ea9120 | 96 | extern int cfg80211_rdev_list_generation; |
704232c2 | 97 | |
46a5ebaf JB |
98 | static inline void assert_cfg80211_lock(void) |
99 | { | |
100 | lockdep_assert_held(&cfg80211_mutex); | |
101 | } | |
761cf7ec | 102 | |
806a9e39 LR |
103 | /* |
104 | * You can use this to mark a wiphy_idx as not having an associated wiphy. | |
79c97e97 | 105 | * It guarantees cfg80211_rdev_by_wiphy_idx(wiphy_idx) will return NULL |
806a9e39 LR |
106 | */ |
107 | #define WIPHY_IDX_STALE -1 | |
108 | ||
2a519311 JB |
109 | struct cfg80211_internal_bss { |
110 | struct list_head list; | |
111 | struct rb_node rbn; | |
112 | unsigned long ts; | |
113 | struct kref ref; | |
19957bb3 | 114 | atomic_t hold; |
34a6eddb JM |
115 | bool beacon_ies_allocated; |
116 | bool proberesp_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 | ||
df7fc0f9 JB |
127 | static inline void cfg80211_ref_bss(struct cfg80211_internal_bss *bss) |
128 | { | |
129 | kref_get(&bss->ref); | |
130 | } | |
131 | ||
19957bb3 JB |
132 | static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss) |
133 | { | |
134 | atomic_inc(&bss->hold); | |
135 | } | |
136 | ||
137 | static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss) | |
138 | { | |
139 | int r = atomic_dec_return(&bss->hold); | |
140 | WARN_ON(r < 0); | |
141 | } | |
142 | ||
143 | ||
79c97e97 | 144 | struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx); |
806a9e39 LR |
145 | int get_wiphy_idx(struct wiphy *wiphy); |
146 | ||
4bbf4d56 | 147 | struct cfg80211_registered_device * |
79c97e97 | 148 | __cfg80211_rdev_from_info(struct genl_info *info); |
4bbf4d56 | 149 | |
55682965 JB |
150 | /* |
151 | * This function returns a pointer to the driver | |
152 | * that the genl_info item that is passed refers to. | |
153 | * If successful, it returns non-NULL and also locks | |
154 | * the driver's mutex! | |
155 | * | |
4d0c8aea | 156 | * This means that you need to call cfg80211_unlock_rdev() |
a1794390 | 157 | * before being allowed to acquire &cfg80211_mutex! |
55682965 JB |
158 | * |
159 | * This is necessary because we need to lock the global | |
160 | * mutex to get an item off the list safely, and then | |
79c97e97 | 161 | * we lock the rdev mutex so it doesn't go away under us. |
55682965 | 162 | * |
a1794390 | 163 | * We don't want to keep cfg80211_mutex locked |
55682965 JB |
164 | * for all the time in order to allow requests on |
165 | * other interfaces to go through at the same time. | |
166 | * | |
167 | * The result of this can be a PTR_ERR and hence must | |
168 | * be checked with IS_ERR() for errors. | |
169 | */ | |
170 | extern struct cfg80211_registered_device * | |
171 | cfg80211_get_dev_from_info(struct genl_info *info); | |
172 | ||
79c97e97 | 173 | /* requires cfg80211_rdev_mutex to be held! */ |
806a9e39 LR |
174 | struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx); |
175 | ||
55682965 JB |
176 | /* identical to cfg80211_get_dev_from_info but only operate on ifindex */ |
177 | extern struct cfg80211_registered_device * | |
463d0183 JB |
178 | cfg80211_get_dev_from_ifindex(struct net *net, int ifindex); |
179 | ||
180 | int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, | |
181 | struct net *net); | |
55682965 | 182 | |
79c97e97 | 183 | static inline void cfg80211_lock_rdev(struct cfg80211_registered_device *rdev) |
667503dd | 184 | { |
79c97e97 | 185 | mutex_lock(&rdev->mtx); |
667503dd JB |
186 | } |
187 | ||
79c97e97 | 188 | static inline void cfg80211_unlock_rdev(struct cfg80211_registered_device *rdev) |
4d0c8aea | 189 | { |
79c97e97 JB |
190 | BUG_ON(IS_ERR(rdev) || !rdev); |
191 | mutex_unlock(&rdev->mtx); | |
4d0c8aea | 192 | } |
55682965 | 193 | |
667503dd JB |
194 | static inline void wdev_lock(struct wireless_dev *wdev) |
195 | __acquires(wdev) | |
196 | { | |
197 | mutex_lock(&wdev->mtx); | |
198 | __acquire(wdev->mtx); | |
199 | } | |
200 | ||
201 | static inline void wdev_unlock(struct wireless_dev *wdev) | |
202 | __releases(wdev) | |
203 | { | |
204 | __release(wdev->mtx); | |
205 | mutex_unlock(&wdev->mtx); | |
206 | } | |
207 | ||
46a5ebaf JB |
208 | #define ASSERT_RDEV_LOCK(rdev) lockdep_assert_held(&(rdev)->mtx) |
209 | #define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx) | |
667503dd JB |
210 | |
211 | enum cfg80211_event_type { | |
212 | EVENT_CONNECT_RESULT, | |
213 | EVENT_ROAMED, | |
214 | EVENT_DISCONNECTED, | |
215 | EVENT_IBSS_JOINED, | |
216 | }; | |
217 | ||
218 | struct cfg80211_event { | |
219 | struct list_head list; | |
220 | enum cfg80211_event_type type; | |
221 | ||
222 | union { | |
223 | struct { | |
224 | u8 bssid[ETH_ALEN]; | |
225 | const u8 *req_ie; | |
226 | const u8 *resp_ie; | |
227 | size_t req_ie_len; | |
228 | size_t resp_ie_len; | |
229 | u16 status; | |
230 | } cr; | |
231 | struct { | |
232 | u8 bssid[ETH_ALEN]; | |
233 | const u8 *req_ie; | |
234 | const u8 *resp_ie; | |
235 | size_t req_ie_len; | |
236 | size_t resp_ie_len; | |
237 | } rm; | |
238 | struct { | |
239 | const u8 *ie; | |
240 | size_t ie_len; | |
241 | u16 reason; | |
242 | } dc; | |
243 | struct { | |
244 | u8 bssid[ETH_ALEN]; | |
245 | } ij; | |
246 | }; | |
247 | }; | |
248 | ||
fffd0934 JB |
249 | struct cfg80211_cached_keys { |
250 | struct key_params params[6]; | |
251 | u8 data[6][WLAN_MAX_KEY_LEN]; | |
252 | int def, defmgmt; | |
253 | }; | |
254 | ||
667503dd | 255 | |
704232c2 | 256 | /* free object */ |
79c97e97 | 257 | extern void cfg80211_dev_free(struct cfg80211_registered_device *rdev); |
704232c2 | 258 | |
79c97e97 | 259 | extern int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, |
55682965 JB |
260 | char *newname); |
261 | ||
8318d78a | 262 | void ieee80211_set_bitrate_flags(struct wiphy *wiphy); |
7db90f4a LR |
263 | void wiphy_update_regulatory(struct wiphy *wiphy, |
264 | enum nl80211_reg_initiator setby); | |
8318d78a | 265 | |
2a519311 | 266 | void cfg80211_bss_expire(struct cfg80211_registered_device *dev); |
cb3a8eec DW |
267 | void cfg80211_bss_age(struct cfg80211_registered_device *dev, |
268 | unsigned long age_secs); | |
2a519311 | 269 | |
04a773ad | 270 | /* IBSS */ |
667503dd JB |
271 | int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev, |
272 | struct net_device *dev, | |
fffd0934 JB |
273 | struct cfg80211_ibss_params *params, |
274 | struct cfg80211_cached_keys *connkeys); | |
04a773ad JB |
275 | int cfg80211_join_ibss(struct cfg80211_registered_device *rdev, |
276 | struct net_device *dev, | |
fffd0934 JB |
277 | struct cfg80211_ibss_params *params, |
278 | struct cfg80211_cached_keys *connkeys); | |
9d308429 | 279 | void cfg80211_clear_ibss(struct net_device *dev, bool nowext); |
98d3a7ca JB |
280 | int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, |
281 | struct net_device *dev, bool nowext); | |
04a773ad | 282 | int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev, |
9d308429 | 283 | struct net_device *dev, bool nowext); |
667503dd | 284 | void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid); |
fffd0934 JB |
285 | int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev, |
286 | struct wireless_dev *wdev); | |
04a773ad | 287 | |
29cbe68c JB |
288 | /* mesh */ |
289 | extern const struct mesh_config default_mesh_config; | |
290 | int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev, | |
291 | struct net_device *dev, | |
292 | const u8 *mesh_id, u8 mesh_id_len, | |
293 | const struct mesh_config *conf); | |
294 | int cfg80211_join_mesh(struct cfg80211_registered_device *rdev, | |
295 | struct net_device *dev, | |
296 | const u8 *mesh_id, u8 mesh_id_len, | |
297 | const struct mesh_config *conf); | |
298 | int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev, | |
299 | struct net_device *dev); | |
300 | ||
19957bb3 | 301 | /* MLME */ |
667503dd JB |
302 | int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev, |
303 | struct net_device *dev, | |
304 | struct ieee80211_channel *chan, | |
305 | enum nl80211_auth_type auth_type, | |
306 | const u8 *bssid, | |
307 | const u8 *ssid, int ssid_len, | |
fffd0934 | 308 | const u8 *ie, int ie_len, |
d5cdfacb JM |
309 | const u8 *key, int key_len, int key_idx, |
310 | bool local_state_change); | |
19957bb3 JB |
311 | int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev, |
312 | struct net_device *dev, struct ieee80211_channel *chan, | |
313 | enum nl80211_auth_type auth_type, const u8 *bssid, | |
314 | const u8 *ssid, int ssid_len, | |
fffd0934 | 315 | const u8 *ie, int ie_len, |
d5cdfacb JM |
316 | const u8 *key, int key_len, int key_idx, |
317 | bool local_state_change); | |
667503dd JB |
318 | int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev, |
319 | struct net_device *dev, | |
320 | struct ieee80211_channel *chan, | |
321 | const u8 *bssid, const u8 *prev_bssid, | |
322 | const u8 *ssid, int ssid_len, | |
323 | const u8 *ie, int ie_len, bool use_mfp, | |
324 | struct cfg80211_crypto_settings *crypt); | |
19957bb3 JB |
325 | int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev, |
326 | struct net_device *dev, struct ieee80211_channel *chan, | |
3e5d7649 JB |
327 | const u8 *bssid, const u8 *prev_bssid, |
328 | const u8 *ssid, int ssid_len, | |
19957bb3 JB |
329 | const u8 *ie, int ie_len, bool use_mfp, |
330 | struct cfg80211_crypto_settings *crypt); | |
667503dd JB |
331 | int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev, |
332 | struct net_device *dev, const u8 *bssid, | |
d5cdfacb JM |
333 | const u8 *ie, int ie_len, u16 reason, |
334 | bool local_state_change); | |
19957bb3 JB |
335 | int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev, |
336 | struct net_device *dev, const u8 *bssid, | |
d5cdfacb JM |
337 | const u8 *ie, int ie_len, u16 reason, |
338 | bool local_state_change); | |
19957bb3 JB |
339 | int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev, |
340 | struct net_device *dev, const u8 *bssid, | |
d5cdfacb JM |
341 | const u8 *ie, int ie_len, u16 reason, |
342 | bool local_state_change); | |
19957bb3 JB |
343 | void cfg80211_mlme_down(struct cfg80211_registered_device *rdev, |
344 | struct net_device *dev); | |
667503dd JB |
345 | void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid, |
346 | const u8 *req_ie, size_t req_ie_len, | |
347 | const u8 *resp_ie, size_t resp_ie_len, | |
df7fc0f9 JB |
348 | u16 status, bool wextev, |
349 | struct cfg80211_bss *bss); | |
2e161f78 JB |
350 | int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid, |
351 | u16 frame_type, const u8 *match_data, | |
352 | int match_len); | |
353 | void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid); | |
354 | void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev); | |
355 | int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev, | |
356 | struct net_device *dev, | |
f7ca38df | 357 | struct ieee80211_channel *chan, bool offchan, |
2e161f78 | 358 | enum nl80211_channel_type channel_type, |
f7ca38df | 359 | bool channel_type_valid, unsigned int wait, |
2e161f78 | 360 | const u8 *buf, size_t len, u64 *cookie); |
19957bb3 | 361 | |
b23aa676 | 362 | /* SME */ |
667503dd JB |
363 | int __cfg80211_connect(struct cfg80211_registered_device *rdev, |
364 | struct net_device *dev, | |
fffd0934 | 365 | struct cfg80211_connect_params *connect, |
f401a6f7 JB |
366 | struct cfg80211_cached_keys *connkeys, |
367 | const u8 *prev_bssid); | |
b23aa676 SO |
368 | int cfg80211_connect(struct cfg80211_registered_device *rdev, |
369 | struct net_device *dev, | |
fffd0934 JB |
370 | struct cfg80211_connect_params *connect, |
371 | struct cfg80211_cached_keys *connkeys); | |
667503dd JB |
372 | int __cfg80211_disconnect(struct cfg80211_registered_device *rdev, |
373 | struct net_device *dev, u16 reason, | |
374 | bool wextev); | |
b23aa676 | 375 | int cfg80211_disconnect(struct cfg80211_registered_device *rdev, |
f2129354 JB |
376 | struct net_device *dev, u16 reason, |
377 | bool wextev); | |
667503dd JB |
378 | void __cfg80211_roamed(struct wireless_dev *wdev, const u8 *bssid, |
379 | const u8 *req_ie, size_t req_ie_len, | |
380 | const u8 *resp_ie, size_t resp_ie_len); | |
fffd0934 JB |
381 | int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev, |
382 | struct wireless_dev *wdev); | |
b23aa676 | 383 | |
6829c878 | 384 | void cfg80211_conn_work(struct work_struct *work); |
7d930bc3 | 385 | void cfg80211_sme_failed_assoc(struct wireless_dev *wdev); |
f401a6f7 | 386 | bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev); |
6829c878 | 387 | |
08645126 | 388 | /* internal helpers */ |
fffd0934 JB |
389 | int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev, |
390 | struct key_params *params, int key_idx, | |
e31b8213 | 391 | bool pairwise, const u8 *mac_addr); |
667503dd | 392 | void __cfg80211_disconnected(struct net_device *dev, const u8 *ie, |
6829c878 JB |
393 | size_t ie_len, u16 reason, bool from_ap); |
394 | void cfg80211_sme_scan_done(struct net_device *dev); | |
395 | void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len); | |
19957bb3 | 396 | void cfg80211_sme_disassoc(struct net_device *dev, int idx); |
667503dd | 397 | void __cfg80211_scan_done(struct work_struct *wk); |
01a0ac41 | 398 | void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak); |
fffd0934 | 399 | void cfg80211_upload_connect_keys(struct wireless_dev *wdev); |
3d54d255 JB |
400 | int cfg80211_change_iface(struct cfg80211_registered_device *rdev, |
401 | struct net_device *dev, enum nl80211_iftype ntype, | |
402 | u32 *flags, struct vif_params *params); | |
403 | void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev); | |
08645126 | 404 | |
9588bbd5 JM |
405 | struct ieee80211_channel * |
406 | rdev_freq_to_chan(struct cfg80211_registered_device *rdev, | |
407 | int freq, enum nl80211_channel_type channel_type); | |
f444de05 JB |
408 | int cfg80211_set_freq(struct cfg80211_registered_device *rdev, |
409 | struct wireless_dev *wdev, int freq, | |
410 | enum nl80211_channel_type channel_type); | |
59bbb6f7 | 411 | |
254416aa JL |
412 | u16 cfg80211_calculate_bitrate(struct rate_info *rate); |
413 | ||
f7969969 JB |
414 | #ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS |
415 | #define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond) | |
416 | #else | |
417 | /* | |
418 | * Trick to enable using it as a condition, | |
419 | * and also not give a warning when it's | |
420 | * not used that way. | |
421 | */ | |
422 | #define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; }) | |
423 | #endif | |
424 | ||
704232c2 | 425 | #endif /* __NET_WIRELESS_CORE_H */ |