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];
40 * the driver requests the regulatory core to set this regulatory
41 * domain as the wiphy's. Only used for %REGULATORY_WIPHY_SELF_MANAGED
42 * devices using the regulatory_set_wiphy_regd() API
44 const struct ieee80211_regdomain *requested_regd;
46 /* If a Country IE has been received this tells us the environment
47 * which its telling us its in. This defaults to ENVIRON_ANY */
48 enum environment_cap env;
50 /* wiphy index, internal only */
53 /* protected by RTNL */
54 int devlist_generation, wdev_id;
56 wait_queue_head_t dev_wait;
58 struct list_head beacon_registrations;
59 spinlock_t beacon_registrations_lock;
61 struct list_head mlme_unreg;
62 spinlock_t mlme_unreg_lock;
63 struct work_struct mlme_unreg_wk;
65 /* protected by RTNL only */
66 int num_running_ifaces;
67 int num_running_monitor_ifaces;
71 struct list_head bss_list;
72 struct rb_root bss_tree;
74 struct cfg80211_scan_request *scan_req; /* protected by RTNL */
75 struct sk_buff *scan_msg;
76 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
77 unsigned long suspend_at;
78 struct work_struct scan_done_wk;
79 struct work_struct sched_scan_results_wk;
81 struct genl_info *cur_cmd_info;
83 struct work_struct conn_work;
84 struct work_struct event_work;
86 struct delayed_work dfs_update_channels_wk;
88 /* netlink port which started critical protocol (0 means not started) */
89 u32 crit_proto_nlportid;
91 struct cfg80211_coalesce *coalesce;
93 spinlock_t destroy_list_lock;
94 struct list_head destroy_list;
95 struct work_struct destroy_work;
97 struct work_struct sched_scan_stop_wk;
99 /* must be last because of the way we do wiphy_priv(),
100 * and it should at least be aligned to NETDEV_ALIGN */
101 struct wiphy wiphy __aligned(NETDEV_ALIGN);
105 struct cfg80211_registered_device *wiphy_to_rdev(struct wiphy *wiphy)
108 return container_of(wiphy, struct cfg80211_registered_device, wiphy);
112 cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
117 if (!rdev->wiphy.wowlan_config)
119 for (i = 0; i < rdev->wiphy.wowlan_config->n_patterns; i++)
120 kfree(rdev->wiphy.wowlan_config->patterns[i].mask);
121 kfree(rdev->wiphy.wowlan_config->patterns);
122 if (rdev->wiphy.wowlan_config->tcp &&
123 rdev->wiphy.wowlan_config->tcp->sock)
124 sock_release(rdev->wiphy.wowlan_config->tcp->sock);
125 kfree(rdev->wiphy.wowlan_config->tcp);
126 kfree(rdev->wiphy.wowlan_config->nd_config);
127 kfree(rdev->wiphy.wowlan_config);
131 extern struct workqueue_struct *cfg80211_wq;
132 extern struct list_head cfg80211_rdev_list;
133 extern int cfg80211_rdev_list_generation;
135 struct cfg80211_internal_bss {
136 struct list_head list;
137 struct list_head hidden_list;
141 unsigned long refcount;
144 /* time at the start of the reception of the first octet of the
145 * timestamp field of the last beacon/probe received for this BSS.
146 * The time is the TSF of the BSS specified by %parent_bssid.
150 /* the BSS according to which %parent_tsf is set. This is set to
151 * the BSS that the interface that requested the scan was connected to
152 * when the beacon/probe was received.
154 u8 parent_bssid[ETH_ALEN] __aligned(2);
156 /* must be last because of priv member */
157 struct cfg80211_bss pub;
160 static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub)
162 return container_of(pub, struct cfg80211_internal_bss, pub);
165 static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
167 atomic_inc(&bss->hold);
170 static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
172 int r = atomic_dec_return(&bss->hold);
177 struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
178 int get_wiphy_idx(struct wiphy *wiphy);
180 struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
182 int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
185 static inline void wdev_lock(struct wireless_dev *wdev)
188 mutex_lock(&wdev->mtx);
189 __acquire(wdev->mtx);
192 static inline void wdev_unlock(struct wireless_dev *wdev)
195 __release(wdev->mtx);
196 mutex_unlock(&wdev->mtx);
199 #define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
201 static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
205 return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
206 rdev->num_running_ifaces > 0;
209 enum cfg80211_event_type {
210 EVENT_CONNECT_RESULT,
217 struct cfg80211_event {
218 struct list_head list;
219 enum cfg80211_event_type type;
228 struct cfg80211_bss *bss;
229 int status; /* -1 = failed; 0..65535 = status code */
236 struct cfg80211_bss *bss;
242 bool locally_generated;
246 struct ieee80211_channel *channel;
251 struct cfg80211_cached_keys {
252 struct key_params params[CFG80211_MAX_WEP_KEYS];
253 u8 data[CFG80211_MAX_WEP_KEYS][WLAN_KEY_LEN_WEP104];
257 enum cfg80211_chan_mode {
263 struct cfg80211_beacon_registration {
264 struct list_head list;
268 struct cfg80211_iface_destroy {
269 struct list_head list;
273 void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev);
276 void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
278 int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
281 void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
283 void cfg80211_bss_expire(struct cfg80211_registered_device *rdev);
284 void cfg80211_bss_age(struct cfg80211_registered_device *rdev,
285 unsigned long age_secs);
288 int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
289 struct net_device *dev,
290 struct cfg80211_ibss_params *params,
291 struct cfg80211_cached_keys *connkeys);
292 void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
293 int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
294 struct net_device *dev, bool nowext);
295 int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
296 struct net_device *dev, bool nowext);
297 void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid,
298 struct ieee80211_channel *channel);
299 int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
300 struct wireless_dev *wdev);
303 extern const struct mesh_config default_mesh_config;
304 extern const struct mesh_setup default_mesh_setup;
305 int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
306 struct net_device *dev,
307 struct mesh_setup *setup,
308 const struct mesh_config *conf);
309 int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
310 struct net_device *dev,
311 struct mesh_setup *setup,
312 const struct mesh_config *conf);
313 int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
314 struct net_device *dev);
315 int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
316 struct net_device *dev);
317 int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
318 struct wireless_dev *wdev,
319 struct cfg80211_chan_def *chandef);
322 int __cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
323 struct net_device *dev,
324 struct ocb_setup *setup);
325 int cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
326 struct net_device *dev,
327 struct ocb_setup *setup);
328 int __cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
329 struct net_device *dev);
330 int cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
331 struct net_device *dev);
334 int __cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
335 struct net_device *dev, bool notify);
336 int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
337 struct net_device *dev, bool notify);
340 int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
341 struct net_device *dev,
342 struct ieee80211_channel *chan,
343 enum nl80211_auth_type auth_type,
345 const u8 *ssid, int ssid_len,
346 const u8 *ie, int ie_len,
347 const u8 *key, int key_len, int key_idx,
348 const u8 *sae_data, int sae_data_len);
349 int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
350 struct net_device *dev,
351 struct ieee80211_channel *chan,
353 const u8 *ssid, int ssid_len,
354 struct cfg80211_assoc_request *req);
355 int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
356 struct net_device *dev, const u8 *bssid,
357 const u8 *ie, int ie_len, u16 reason,
358 bool local_state_change);
359 int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
360 struct net_device *dev, const u8 *bssid,
361 const u8 *ie, int ie_len, u16 reason,
362 bool local_state_change);
363 void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
364 struct net_device *dev);
365 int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
366 u16 frame_type, const u8 *match_data,
368 void cfg80211_mlme_unreg_wk(struct work_struct *wk);
369 void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
370 void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
371 int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
372 struct wireless_dev *wdev,
373 struct cfg80211_mgmt_tx_params *params,
375 void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
376 const struct ieee80211_ht_cap *ht_capa_mask);
377 void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
378 const struct ieee80211_vht_cap *vht_capa_mask);
381 int cfg80211_connect(struct cfg80211_registered_device *rdev,
382 struct net_device *dev,
383 struct cfg80211_connect_params *connect,
384 struct cfg80211_cached_keys *connkeys,
385 const u8 *prev_bssid);
386 void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
387 const u8 *req_ie, size_t req_ie_len,
388 const u8 *resp_ie, size_t resp_ie_len,
389 int status, bool wextev,
390 struct cfg80211_bss *bss);
391 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
392 size_t ie_len, u16 reason, bool from_ap);
393 int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
394 struct net_device *dev, u16 reason,
396 void __cfg80211_roamed(struct wireless_dev *wdev,
397 struct cfg80211_bss *bss,
398 const u8 *req_ie, size_t req_ie_len,
399 const u8 *resp_ie, size_t resp_ie_len);
400 int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
401 struct wireless_dev *wdev);
403 /* SME implementation */
404 void cfg80211_conn_work(struct work_struct *work);
405 void cfg80211_sme_scan_done(struct net_device *dev);
406 bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status);
407 void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len);
408 void cfg80211_sme_disassoc(struct wireless_dev *wdev);
409 void cfg80211_sme_deauth(struct wireless_dev *wdev);
410 void cfg80211_sme_auth_timeout(struct wireless_dev *wdev);
411 void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev);
413 /* internal helpers */
414 bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
415 int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
416 struct key_params *params, int key_idx,
417 bool pairwise, const u8 *mac_addr);
418 void __cfg80211_scan_done(struct work_struct *wk);
419 void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,
421 void __cfg80211_sched_scan_results(struct work_struct *wk);
422 int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
423 bool driver_initiated);
424 void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
425 int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
426 struct net_device *dev, enum nl80211_iftype ntype,
427 u32 *flags, struct vif_params *params);
428 void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
429 void cfg80211_process_wdev_events(struct wireless_dev *wdev);
432 * cfg80211_chandef_dfs_usable - checks if chandef is DFS usable
433 * @wiphy: the wiphy to validate against
434 * @chandef: the channel definition to check
436 * Checks if chandef is usable and we can/need start CAC on such channel.
438 * Return: Return true if all channels available and at least
439 * one channel require CAC (NL80211_DFS_USABLE)
441 bool cfg80211_chandef_dfs_usable(struct wiphy *wiphy,
442 const struct cfg80211_chan_def *chandef);
444 void cfg80211_set_dfs_state(struct wiphy *wiphy,
445 const struct cfg80211_chan_def *chandef,
446 enum nl80211_dfs_state dfs_state);
448 void cfg80211_dfs_channels_update_work(struct work_struct *work);
451 cfg80211_chandef_dfs_cac_time(struct wiphy *wiphy,
452 const struct cfg80211_chan_def *chandef);
454 static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
456 unsigned long end = jiffies;
459 return jiffies_to_msecs(end - start);
461 return jiffies_to_msecs(end + (ULONG_MAX - start) + 1);
465 cfg80211_get_chan_state(struct wireless_dev *wdev,
466 struct ieee80211_channel **chan,
467 enum cfg80211_chan_mode *chanmode,
470 int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
471 struct cfg80211_chan_def *chandef);
473 int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
474 const u8 *rates, unsigned int n_rates,
477 int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
480 void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
481 enum nl80211_iftype iftype, int num);
483 void __cfg80211_leave(struct cfg80211_registered_device *rdev,
484 struct wireless_dev *wdev);
485 void cfg80211_leave(struct cfg80211_registered_device *rdev,
486 struct wireless_dev *wdev);
488 void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
489 struct wireless_dev *wdev);
491 void cfg80211_stop_nan(struct cfg80211_registered_device *rdev,
492 struct wireless_dev *wdev);
494 #define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
496 #ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
497 #define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
500 * Trick to enable using it as a condition,
501 * and also not give a warning when it's
504 #define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
507 #endif /* __NET_WIRELESS_CORE_H */