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 cfg80211_sched_scan_request *sched_scan_req;
66 unsigned long suspend_at;
67 struct work_struct scan_done_wk;
68 struct work_struct sched_scan_results_wk;
70 #ifdef CONFIG_NL80211_TESTMODE
71 struct genl_info *testmode_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 /* must be last because of the way we do wiphy_priv(),
83 * and it should at least be aligned to NETDEV_ALIGN */
84 struct wiphy wiphy __aligned(NETDEV_ALIGN);
88 struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy)
91 return container_of(wiphy, struct cfg80211_registered_device, wiphy);
95 cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
100 if (!rdev->wiphy.wowlan_config)
102 for (i = 0; i < rdev->wiphy.wowlan_config->n_patterns; i++)
103 kfree(rdev->wiphy.wowlan_config->patterns[i].mask);
104 kfree(rdev->wiphy.wowlan_config->patterns);
105 if (rdev->wiphy.wowlan_config->tcp &&
106 rdev->wiphy.wowlan_config->tcp->sock)
107 sock_release(rdev->wiphy.wowlan_config->tcp->sock);
108 kfree(rdev->wiphy.wowlan_config->tcp);
109 kfree(rdev->wiphy.wowlan_config);
113 extern struct workqueue_struct *cfg80211_wq;
114 extern struct list_head cfg80211_rdev_list;
115 extern int cfg80211_rdev_list_generation;
117 struct cfg80211_internal_bss {
118 struct list_head list;
119 struct list_head hidden_list;
122 unsigned long refcount;
125 /* must be last because of priv member */
126 struct cfg80211_bss pub;
129 static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub)
131 return container_of(pub, struct cfg80211_internal_bss, pub);
134 static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
136 atomic_inc(&bss->hold);
139 static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
141 int r = atomic_dec_return(&bss->hold);
146 struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
147 int get_wiphy_idx(struct wiphy *wiphy);
149 struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
151 int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
154 static inline void wdev_lock(struct wireless_dev *wdev)
157 mutex_lock(&wdev->mtx);
158 __acquire(wdev->mtx);
161 static inline void wdev_unlock(struct wireless_dev *wdev)
164 __release(wdev->mtx);
165 mutex_unlock(&wdev->mtx);
168 #define ASSERT_RDEV_LOCK(rdev) ASSERT_RTNL()
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;
217 struct cfg80211_cached_keys {
218 struct key_params params[6];
219 u8 data[6][WLAN_MAX_KEY_LEN];
223 enum cfg80211_chan_mode {
229 struct cfg80211_beacon_registration {
230 struct list_head list;
235 extern void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
237 extern int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
240 void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
242 void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
243 void cfg80211_bss_age(struct cfg80211_registered_device *dev,
244 unsigned long age_secs);
247 int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
248 struct net_device *dev,
249 struct cfg80211_ibss_params *params,
250 struct cfg80211_cached_keys *connkeys);
251 int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
252 struct net_device *dev,
253 struct cfg80211_ibss_params *params,
254 struct cfg80211_cached_keys *connkeys);
255 void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
256 int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
257 struct net_device *dev, bool nowext);
258 int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
259 struct net_device *dev, bool nowext);
260 void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid);
261 int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
262 struct wireless_dev *wdev);
265 extern const struct mesh_config default_mesh_config;
266 extern const struct mesh_setup default_mesh_setup;
267 int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
268 struct net_device *dev,
269 struct mesh_setup *setup,
270 const struct mesh_config *conf);
271 int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
272 struct net_device *dev,
273 struct mesh_setup *setup,
274 const struct mesh_config *conf);
275 int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
276 struct net_device *dev);
277 int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
278 struct wireless_dev *wdev,
279 struct cfg80211_chan_def *chandef);
282 int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
283 struct net_device *dev);
286 int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
287 struct net_device *dev,
288 struct ieee80211_channel *chan,
289 enum nl80211_auth_type auth_type,
291 const u8 *ssid, int ssid_len,
292 const u8 *ie, int ie_len,
293 const u8 *key, int key_len, int key_idx,
294 const u8 *sae_data, int sae_data_len);
295 int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
296 struct net_device *dev,
297 struct ieee80211_channel *chan,
299 const u8 *ssid, int ssid_len,
300 struct cfg80211_assoc_request *req);
301 int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
302 struct net_device *dev, const u8 *bssid,
303 const u8 *ie, int ie_len, u16 reason,
304 bool local_state_change);
305 int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
306 struct net_device *dev, const u8 *bssid,
307 const u8 *ie, int ie_len, u16 reason,
308 bool local_state_change);
309 void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
310 struct net_device *dev);
311 void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
312 const u8 *req_ie, size_t req_ie_len,
313 const u8 *resp_ie, size_t resp_ie_len,
314 u16 status, bool wextev,
315 struct cfg80211_bss *bss);
316 int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
317 u16 frame_type, const u8 *match_data,
319 void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
320 void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
321 int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
322 struct wireless_dev *wdev,
323 struct ieee80211_channel *chan, bool offchan,
324 unsigned int wait, const u8 *buf, size_t len,
325 bool no_cck, bool dont_wait_for_ack, u64 *cookie);
326 void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
327 const struct ieee80211_ht_cap *ht_capa_mask);
328 void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
329 const struct ieee80211_vht_cap *vht_capa_mask);
332 int cfg80211_connect(struct cfg80211_registered_device *rdev,
333 struct net_device *dev,
334 struct cfg80211_connect_params *connect,
335 struct cfg80211_cached_keys *connkeys,
336 const u8 *prev_bssid);
337 int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
338 struct net_device *dev, u16 reason,
340 void __cfg80211_roamed(struct wireless_dev *wdev,
341 struct cfg80211_bss *bss,
342 const u8 *req_ie, size_t req_ie_len,
343 const u8 *resp_ie, size_t resp_ie_len);
344 int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
345 struct wireless_dev *wdev);
347 void cfg80211_conn_work(struct work_struct *work);
348 void cfg80211_sme_failed_assoc(struct wireless_dev *wdev);
349 bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev);
351 /* internal helpers */
352 bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
353 int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
354 struct key_params *params, int key_idx,
355 bool pairwise, const u8 *mac_addr);
356 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
357 size_t ie_len, u16 reason, bool from_ap);
358 void cfg80211_sme_scan_done(struct net_device *dev);
359 void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
360 void cfg80211_sme_disassoc(struct net_device *dev,
361 struct cfg80211_internal_bss *bss);
362 void __cfg80211_scan_done(struct work_struct *wk);
363 void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak);
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_required - checks if radar detection is required
383 * @wiphy: the wiphy to validate against
384 * @chandef: the channel definition to check
385 * Return: 1 if radar detection is required, 0 if it is not, < 0 on error
387 int cfg80211_chandef_dfs_required(struct wiphy *wiphy,
388 const struct cfg80211_chan_def *c);
390 void cfg80211_set_dfs_state(struct wiphy *wiphy,
391 const struct cfg80211_chan_def *chandef,
392 enum nl80211_dfs_state dfs_state);
394 void cfg80211_dfs_channels_update_work(struct work_struct *work);
398 cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
399 struct wireless_dev *wdev,
400 enum nl80211_iftype iftype)
402 return cfg80211_can_use_iftype_chan(rdev, wdev, iftype, NULL,
403 CHAN_MODE_UNDEFINED, 0);
407 cfg80211_can_add_interface(struct cfg80211_registered_device *rdev,
408 enum nl80211_iftype iftype)
410 return cfg80211_can_change_interface(rdev, NULL, iftype);
414 cfg80211_can_use_chan(struct cfg80211_registered_device *rdev,
415 struct wireless_dev *wdev,
416 struct ieee80211_channel *chan,
417 enum cfg80211_chan_mode chanmode)
419 return cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
423 static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
425 unsigned long end = jiffies;
428 return jiffies_to_msecs(end - start);
430 return jiffies_to_msecs(end + (MAX_JIFFY_OFFSET - start) + 1);
434 cfg80211_get_chan_state(struct wireless_dev *wdev,
435 struct ieee80211_channel **chan,
436 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);
454 void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
455 struct wireless_dev *wdev);
457 #define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
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 */