2 * Wireless configuration interface internals.
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
6 #ifndef __NET_WIRELESS_CORE_H
7 #define __NET_WIRELESS_CORE_H
8 #include <linux/list.h>
9 #include <linux/netdevice.h>
10 #include <linux/rbtree.h>
11 #include <linux/debugfs.h>
12 #include <linux/rfkill.h>
13 #include <linux/workqueue.h>
14 #include <linux/rtnetlink.h>
15 #include <net/genetlink.h>
16 #include <net/cfg80211.h>
20 #define WIPHY_IDX_INVALID -1
22 struct cfg80211_registered_device {
23 const struct cfg80211_ops *ops;
24 struct list_head list;
27 struct rfkill_ops rfkill_ops;
28 struct rfkill *rfkill;
29 struct work_struct rfkill_sync;
31 /* ISO / IEC 3166 alpha2 for which this device is receiving
32 * country IEs on, this can help disregard country IEs from APs
33 * on the same alpha2 quickly. The alpha2 may differ from
34 * cfg80211_regdomain's alpha2 when an intersection has occurred.
35 * If the AP is reconfigured this can also be used to tell us if
36 * the country on the country IE changed. */
37 char country_ie_alpha2[2];
39 /* If a Country IE has been received this tells us the environment
40 * which its telling us its in. This defaults to ENVIRON_ANY */
41 enum environment_cap env;
43 /* wiphy index, internal only */
46 /* associated wireless interfaces, protected by rtnl or RCU */
47 struct list_head wdev_list;
48 int devlist_generation, wdev_id;
49 int opencount; /* also protected by devlist_mtx */
50 wait_queue_head_t dev_wait;
52 struct list_head beacon_registrations;
53 spinlock_t beacon_registrations_lock;
55 /* protected by RTNL only */
56 int num_running_ifaces;
57 int num_running_monitor_ifaces;
61 struct list_head bss_list;
62 struct rb_root bss_tree;
64 struct cfg80211_scan_request *scan_req; /* protected by RTNL */
65 struct sk_buff *scan_msg;
66 struct cfg80211_sched_scan_request *sched_scan_req;
67 unsigned long suspend_at;
68 struct work_struct scan_done_wk;
69 struct work_struct sched_scan_results_wk;
71 struct genl_info *cur_cmd_info;
73 struct work_struct conn_work;
74 struct work_struct event_work;
76 struct delayed_work dfs_update_channels_wk;
78 /* netlink port which started critical protocol (0 means not started) */
79 u32 crit_proto_nlportid;
81 struct cfg80211_coalesce *coalesce;
83 /* must be last because of the way we do wiphy_priv(),
84 * and it should at least be aligned to NETDEV_ALIGN */
85 struct wiphy wiphy __aligned(NETDEV_ALIGN);
89 struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy)
92 return container_of(wiphy, struct cfg80211_registered_device, wiphy);
96 cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
101 if (!rdev->wiphy.wowlan_config)
103 for (i = 0; i < rdev->wiphy.wowlan_config->n_patterns; i++)
104 kfree(rdev->wiphy.wowlan_config->patterns[i].mask);
105 kfree(rdev->wiphy.wowlan_config->patterns);
106 if (rdev->wiphy.wowlan_config->tcp &&
107 rdev->wiphy.wowlan_config->tcp->sock)
108 sock_release(rdev->wiphy.wowlan_config->tcp->sock);
109 kfree(rdev->wiphy.wowlan_config->tcp);
110 kfree(rdev->wiphy.wowlan_config);
114 extern struct workqueue_struct *cfg80211_wq;
115 extern struct list_head cfg80211_rdev_list;
116 extern int cfg80211_rdev_list_generation;
118 struct cfg80211_internal_bss {
119 struct list_head list;
120 struct list_head hidden_list;
123 unsigned long refcount;
126 /* must be last because of priv member */
127 struct cfg80211_bss pub;
130 static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub)
132 return container_of(pub, struct cfg80211_internal_bss, pub);
135 static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
137 atomic_inc(&bss->hold);
140 static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
142 int r = atomic_dec_return(&bss->hold);
147 struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
148 int get_wiphy_idx(struct wiphy *wiphy);
150 struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
152 int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
155 static inline void wdev_lock(struct wireless_dev *wdev)
158 mutex_lock(&wdev->mtx);
159 __acquire(wdev->mtx);
162 static inline void wdev_unlock(struct wireless_dev *wdev)
165 __release(wdev->mtx);
166 mutex_unlock(&wdev->mtx);
169 #define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
171 static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
175 return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
176 rdev->num_running_ifaces > 0;
179 enum cfg80211_event_type {
180 EVENT_CONNECT_RESULT,
186 struct cfg80211_event {
187 struct list_head list;
188 enum cfg80211_event_type type;
204 struct cfg80211_bss *bss;
213 struct ieee80211_channel *channel;
218 struct cfg80211_cached_keys {
219 struct key_params params[6];
220 u8 data[6][WLAN_MAX_KEY_LEN];
224 enum cfg80211_chan_mode {
230 struct cfg80211_beacon_registration {
231 struct list_head list;
236 void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
238 int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
241 void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
243 void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
244 void cfg80211_bss_age(struct cfg80211_registered_device *dev,
245 unsigned long age_secs);
248 int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
249 struct net_device *dev,
250 struct cfg80211_ibss_params *params,
251 struct cfg80211_cached_keys *connkeys);
252 void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
253 int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
254 struct net_device *dev, bool nowext);
255 int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
256 struct net_device *dev, bool nowext);
257 void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid,
258 struct ieee80211_channel *channel);
259 int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
260 struct wireless_dev *wdev);
263 extern const struct mesh_config default_mesh_config;
264 extern const struct mesh_setup default_mesh_setup;
265 int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
266 struct net_device *dev,
267 struct mesh_setup *setup,
268 const struct mesh_config *conf);
269 int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
270 struct net_device *dev,
271 struct mesh_setup *setup,
272 const struct mesh_config *conf);
273 int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
274 struct net_device *dev);
275 int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
276 struct wireless_dev *wdev,
277 struct cfg80211_chan_def *chandef);
280 int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
281 struct net_device *dev, bool notify);
284 int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
285 struct net_device *dev,
286 struct ieee80211_channel *chan,
287 enum nl80211_auth_type auth_type,
289 const u8 *ssid, int ssid_len,
290 const u8 *ie, int ie_len,
291 const u8 *key, int key_len, int key_idx,
292 const u8 *sae_data, int sae_data_len);
293 int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
294 struct net_device *dev,
295 struct ieee80211_channel *chan,
297 const u8 *ssid, int ssid_len,
298 struct cfg80211_assoc_request *req);
299 int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
300 struct net_device *dev, const u8 *bssid,
301 const u8 *ie, int ie_len, u16 reason,
302 bool local_state_change);
303 int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
304 struct net_device *dev, const u8 *bssid,
305 const u8 *ie, int ie_len, u16 reason,
306 bool local_state_change);
307 void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
308 struct net_device *dev);
309 int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
310 u16 frame_type, const u8 *match_data,
312 void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
313 void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
314 int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
315 struct wireless_dev *wdev,
316 struct cfg80211_mgmt_tx_params *params,
318 void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
319 const struct ieee80211_ht_cap *ht_capa_mask);
320 void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
321 const struct ieee80211_vht_cap *vht_capa_mask);
324 int cfg80211_connect(struct cfg80211_registered_device *rdev,
325 struct net_device *dev,
326 struct cfg80211_connect_params *connect,
327 struct cfg80211_cached_keys *connkeys,
328 const u8 *prev_bssid);
329 void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
330 const u8 *req_ie, size_t req_ie_len,
331 const u8 *resp_ie, size_t resp_ie_len,
332 u16 status, bool wextev,
333 struct cfg80211_bss *bss);
334 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
335 size_t ie_len, u16 reason, bool from_ap);
336 int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
337 struct net_device *dev, u16 reason,
339 void __cfg80211_roamed(struct wireless_dev *wdev,
340 struct cfg80211_bss *bss,
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 /* SME implementation */
347 void cfg80211_conn_work(struct work_struct *work);
348 void cfg80211_sme_scan_done(struct net_device *dev);
349 bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status);
350 void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len);
351 void cfg80211_sme_disassoc(struct wireless_dev *wdev);
352 void cfg80211_sme_deauth(struct wireless_dev *wdev);
353 void cfg80211_sme_auth_timeout(struct wireless_dev *wdev);
354 void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev);
356 /* internal helpers */
357 bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
358 int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
359 struct key_params *params, int key_idx,
360 bool pairwise, const u8 *mac_addr);
361 void __cfg80211_scan_done(struct work_struct *wk);
362 void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,
364 void __cfg80211_sched_scan_results(struct work_struct *wk);
365 int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
366 bool driver_initiated);
367 void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
368 int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
369 struct net_device *dev, enum nl80211_iftype ntype,
370 u32 *flags, struct vif_params *params);
371 void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
372 void cfg80211_process_wdev_events(struct wireless_dev *wdev);
374 int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
375 struct wireless_dev *wdev,
376 enum nl80211_iftype iftype,
377 struct ieee80211_channel *chan,
378 enum cfg80211_chan_mode chanmode,
382 * cfg80211_chandef_dfs_usable - checks if chandef is DFS usable
383 * @wiphy: the wiphy to validate against
384 * @chandef: the channel definition to check
386 * Checks if chandef is usable and we can/need start CAC on such channel.
388 * Return: Return true if all channels available and at least
389 * one channel require CAC (NL80211_DFS_USABLE)
391 bool cfg80211_chandef_dfs_usable(struct wiphy *wiphy,
392 const struct cfg80211_chan_def *chandef);
394 void cfg80211_set_dfs_state(struct wiphy *wiphy,
395 const struct cfg80211_chan_def *chandef,
396 enum nl80211_dfs_state dfs_state);
398 void cfg80211_dfs_channels_update_work(struct work_struct *work);
401 cfg80211_chandef_dfs_cac_time(struct wiphy *wiphy,
402 const struct cfg80211_chan_def *chandef);
405 cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
406 struct wireless_dev *wdev,
407 enum nl80211_iftype iftype)
409 return cfg80211_can_use_iftype_chan(rdev, wdev, iftype, NULL,
410 CHAN_MODE_UNDEFINED, 0);
414 cfg80211_can_add_interface(struct cfg80211_registered_device *rdev,
415 enum nl80211_iftype iftype)
417 if (rfkill_blocked(rdev->rfkill))
420 return cfg80211_can_change_interface(rdev, NULL, iftype);
424 cfg80211_can_use_chan(struct cfg80211_registered_device *rdev,
425 struct wireless_dev *wdev,
426 struct ieee80211_channel *chan,
427 enum cfg80211_chan_mode chanmode)
429 return cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
433 static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
435 unsigned long end = jiffies;
438 return jiffies_to_msecs(end - start);
440 return jiffies_to_msecs(end + (MAX_JIFFY_OFFSET - start) + 1);
444 cfg80211_get_chan_state(struct wireless_dev *wdev,
445 struct ieee80211_channel **chan,
446 enum cfg80211_chan_mode *chanmode,
449 int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
450 struct cfg80211_chan_def *chandef);
452 int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
453 const u8 *rates, unsigned int n_rates,
456 int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
459 void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
460 enum nl80211_iftype iftype, int num);
462 void cfg80211_leave(struct cfg80211_registered_device *rdev,
463 struct wireless_dev *wdev);
465 void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
466 struct wireless_dev *wdev);
468 #define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
470 #ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
471 #define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
474 * Trick to enable using it as a condition,
475 * and also not give a warning when it's
478 #define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
481 #endif /* __NET_WIRELESS_CORE_H */