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;
65 struct cfg80211_scan_request *scan_req; /* protected by RTNL */
66 struct sk_buff *scan_msg;
67 struct cfg80211_sched_scan_request *sched_scan_req;
68 unsigned long suspend_at;
69 struct work_struct scan_done_wk;
70 struct work_struct sched_scan_results_wk;
72 struct genl_info *cur_cmd_info;
74 struct work_struct conn_work;
75 struct work_struct event_work;
77 struct delayed_work dfs_update_channels_wk;
79 /* netlink port which started critical protocol (0 means not started) */
80 u32 crit_proto_nlportid;
82 struct cfg80211_coalesce *coalesce;
84 spinlock_t destroy_list_lock;
85 struct list_head destroy_list;
86 struct work_struct destroy_work;
88 /* must be last because of the way we do wiphy_priv(),
89 * and it should at least be aligned to NETDEV_ALIGN */
90 struct wiphy wiphy __aligned(NETDEV_ALIGN);
94 struct cfg80211_registered_device *wiphy_to_rdev(struct wiphy *wiphy)
97 return container_of(wiphy, struct cfg80211_registered_device, wiphy);
101 cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
106 if (!rdev->wiphy.wowlan_config)
108 for (i = 0; i < rdev->wiphy.wowlan_config->n_patterns; i++)
109 kfree(rdev->wiphy.wowlan_config->patterns[i].mask);
110 kfree(rdev->wiphy.wowlan_config->patterns);
111 if (rdev->wiphy.wowlan_config->tcp &&
112 rdev->wiphy.wowlan_config->tcp->sock)
113 sock_release(rdev->wiphy.wowlan_config->tcp->sock);
114 kfree(rdev->wiphy.wowlan_config->tcp);
115 kfree(rdev->wiphy.wowlan_config);
119 extern struct workqueue_struct *cfg80211_wq;
120 extern struct list_head cfg80211_rdev_list;
121 extern int cfg80211_rdev_list_generation;
123 struct cfg80211_internal_bss {
124 struct list_head list;
125 struct list_head hidden_list;
128 unsigned long refcount;
131 /* must be last because of priv member */
132 struct cfg80211_bss pub;
135 static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub)
137 return container_of(pub, struct cfg80211_internal_bss, pub);
140 static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
142 atomic_inc(&bss->hold);
145 static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
147 int r = atomic_dec_return(&bss->hold);
152 struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
153 int get_wiphy_idx(struct wiphy *wiphy);
155 struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
157 int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
160 static inline void wdev_lock(struct wireless_dev *wdev)
163 mutex_lock(&wdev->mtx);
164 __acquire(wdev->mtx);
167 static inline void wdev_unlock(struct wireless_dev *wdev)
170 __release(wdev->mtx);
171 mutex_unlock(&wdev->mtx);
174 #define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
176 static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
180 return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
181 rdev->num_running_ifaces > 0;
184 enum cfg80211_event_type {
185 EVENT_CONNECT_RESULT,
192 struct cfg80211_event {
193 struct list_head list;
194 enum cfg80211_event_type type;
210 struct cfg80211_bss *bss;
219 struct ieee80211_channel *channel;
224 struct cfg80211_cached_keys {
225 struct key_params params[6];
226 u8 data[6][WLAN_MAX_KEY_LEN];
230 enum cfg80211_chan_mode {
236 struct cfg80211_beacon_registration {
237 struct list_head list;
241 struct cfg80211_iface_destroy {
242 struct list_head list;
246 void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev);
249 void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
251 int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
254 void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
256 void cfg80211_bss_expire(struct cfg80211_registered_device *rdev);
257 void cfg80211_bss_age(struct cfg80211_registered_device *rdev,
258 unsigned long age_secs);
261 int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
262 struct net_device *dev,
263 struct cfg80211_ibss_params *params,
264 struct cfg80211_cached_keys *connkeys);
265 void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
266 int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
267 struct net_device *dev, bool nowext);
268 int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
269 struct net_device *dev, bool nowext);
270 void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid,
271 struct ieee80211_channel *channel);
272 int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
273 struct wireless_dev *wdev);
276 extern const struct mesh_config default_mesh_config;
277 extern const struct mesh_setup default_mesh_setup;
278 int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
279 struct net_device *dev,
280 struct mesh_setup *setup,
281 const struct mesh_config *conf);
282 int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
283 struct net_device *dev,
284 struct mesh_setup *setup,
285 const struct mesh_config *conf);
286 int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
287 struct net_device *dev);
288 int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
289 struct net_device *dev);
290 int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
291 struct wireless_dev *wdev,
292 struct cfg80211_chan_def *chandef);
295 int __cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
296 struct net_device *dev, bool notify);
297 int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
298 struct net_device *dev, bool notify);
301 int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
302 struct net_device *dev,
303 struct ieee80211_channel *chan,
304 enum nl80211_auth_type auth_type,
306 const u8 *ssid, int ssid_len,
307 const u8 *ie, int ie_len,
308 const u8 *key, int key_len, int key_idx,
309 const u8 *sae_data, int sae_data_len);
310 int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
311 struct net_device *dev,
312 struct ieee80211_channel *chan,
314 const u8 *ssid, int ssid_len,
315 struct cfg80211_assoc_request *req);
316 int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
317 struct net_device *dev, const u8 *bssid,
318 const u8 *ie, int ie_len, u16 reason,
319 bool local_state_change);
320 int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
321 struct net_device *dev, const u8 *bssid,
322 const u8 *ie, int ie_len, u16 reason,
323 bool local_state_change);
324 void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
325 struct net_device *dev);
326 int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
327 u16 frame_type, const u8 *match_data,
329 void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
330 void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
331 int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
332 struct wireless_dev *wdev,
333 struct cfg80211_mgmt_tx_params *params,
335 void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
336 const struct ieee80211_ht_cap *ht_capa_mask);
337 void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
338 const struct ieee80211_vht_cap *vht_capa_mask);
341 int cfg80211_connect(struct cfg80211_registered_device *rdev,
342 struct net_device *dev,
343 struct cfg80211_connect_params *connect,
344 struct cfg80211_cached_keys *connkeys,
345 const u8 *prev_bssid);
346 void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
347 const u8 *req_ie, size_t req_ie_len,
348 const u8 *resp_ie, size_t resp_ie_len,
349 u16 status, bool wextev,
350 struct cfg80211_bss *bss);
351 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
352 size_t ie_len, u16 reason, bool from_ap);
353 int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
354 struct net_device *dev, u16 reason,
356 void __cfg80211_roamed(struct wireless_dev *wdev,
357 struct cfg80211_bss *bss,
358 const u8 *req_ie, size_t req_ie_len,
359 const u8 *resp_ie, size_t resp_ie_len);
360 int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
361 struct wireless_dev *wdev);
363 /* SME implementation */
364 void cfg80211_conn_work(struct work_struct *work);
365 void cfg80211_sme_scan_done(struct net_device *dev);
366 bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status);
367 void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len);
368 void cfg80211_sme_disassoc(struct wireless_dev *wdev);
369 void cfg80211_sme_deauth(struct wireless_dev *wdev);
370 void cfg80211_sme_auth_timeout(struct wireless_dev *wdev);
371 void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev);
372 void cfg80211_sme_abandon_assoc(struct wireless_dev *wdev);
374 /* internal helpers */
375 bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
376 int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
377 struct key_params *params, int key_idx,
378 bool pairwise, const u8 *mac_addr);
379 void __cfg80211_scan_done(struct work_struct *wk);
380 void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,
382 void __cfg80211_sched_scan_results(struct work_struct *wk);
383 int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
384 bool driver_initiated);
385 void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
386 int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
387 struct net_device *dev, enum nl80211_iftype ntype,
388 u32 *flags, struct vif_params *params);
389 void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
390 void cfg80211_process_wdev_events(struct wireless_dev *wdev);
392 int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
393 struct wireless_dev *wdev,
394 enum nl80211_iftype iftype,
395 struct ieee80211_channel *chan,
396 enum cfg80211_chan_mode chanmode,
400 * cfg80211_chandef_dfs_usable - checks if chandef is DFS usable
401 * @wiphy: the wiphy to validate against
402 * @chandef: the channel definition to check
404 * Checks if chandef is usable and we can/need start CAC on such channel.
406 * Return: Return true if all channels available and at least
407 * one channel require CAC (NL80211_DFS_USABLE)
409 bool cfg80211_chandef_dfs_usable(struct wiphy *wiphy,
410 const struct cfg80211_chan_def *chandef);
412 void cfg80211_set_dfs_state(struct wiphy *wiphy,
413 const struct cfg80211_chan_def *chandef,
414 enum nl80211_dfs_state dfs_state);
416 void cfg80211_dfs_channels_update_work(struct work_struct *work);
419 cfg80211_chandef_dfs_cac_time(struct wiphy *wiphy,
420 const struct cfg80211_chan_def *chandef);
422 static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
424 unsigned long end = jiffies;
427 return jiffies_to_msecs(end - start);
429 return jiffies_to_msecs(end + (ULONG_MAX - start) + 1);
433 cfg80211_get_chan_state(struct wireless_dev *wdev,
434 struct ieee80211_channel **chan,
435 enum cfg80211_chan_mode *chanmode,
438 int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
439 struct cfg80211_chan_def *chandef);
441 int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
442 const u8 *rates, unsigned int n_rates,
445 int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
448 void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
449 enum nl80211_iftype iftype, int num);
451 void __cfg80211_leave(struct cfg80211_registered_device *rdev,
452 struct wireless_dev *wdev);
453 void cfg80211_leave(struct cfg80211_registered_device *rdev,
454 struct wireless_dev *wdev);
456 void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
457 struct wireless_dev *wdev);
459 #ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
460 #define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
463 * Trick to enable using it as a condition,
464 * and also not give a warning when it's
467 #define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
470 #endif /* __NET_WIRELESS_CORE_H */