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1/*
2 * Wireless configuration interface internals.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
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>
11#include <linux/kref.h>
12#include <linux/rbtree.h>
13#include <linux/debugfs.h>
14#include <linux/rfkill.h>
15#include <linux/workqueue.h>
16#include <net/genetlink.h>
17#include <net/cfg80211.h>
18#include "reg.h"
19
20struct cfg80211_registered_device {
21 const struct cfg80211_ops *ops;
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
29 /* rfkill support */
30 struct rfkill_ops rfkill_ops;
31 struct rfkill *rfkill;
32 struct work_struct rfkill_sync;
33
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
46 /* wiphy index, internal only */
47 int wiphy_idx;
48
49 /* associate netdev list */
50 struct mutex devlist_mtx;
51 /* protected by devlist_mtx or RCU */
52 struct list_head netdev_list;
53 int devlist_generation;
54 int opencount; /* also protected by devlist_mtx */
55 wait_queue_head_t dev_wait;
56
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 */
63 struct cfg80211_sched_scan_request *sched_scan_req;
64 unsigned long suspend_at;
65 struct work_struct scan_done_wk;
66 struct work_struct sched_scan_results_wk;
67
68 struct mutex sched_scan_mtx;
69
70#ifdef CONFIG_NL80211_TESTMODE
71 struct genl_info *testmode_info;
72#endif
73
74 struct work_struct conn_work;
75 struct work_struct event_work;
76
77 struct cfg80211_wowlan *wowlan;
78
79 /* must be last because of the way we do wiphy_priv(),
80 * and it should at least be aligned to NETDEV_ALIGN */
81 struct wiphy wiphy __attribute__((__aligned__(NETDEV_ALIGN)));
82};
83
84static inline
85struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy)
86{
87 BUG_ON(!wiphy);
88 return container_of(wiphy, struct cfg80211_registered_device, wiphy);
89}
90
91/* Note 0 is valid, hence phy0 */
92static inline
93bool wiphy_idx_valid(int wiphy_idx)
94{
95 return wiphy_idx >= 0;
96}
97
98static inline void
99cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
100{
101 int i;
102
103 if (!rdev->wowlan)
104 return;
105 for (i = 0; i < rdev->wowlan->n_patterns; i++)
106 kfree(rdev->wowlan->patterns[i].mask);
107 kfree(rdev->wowlan->patterns);
108 kfree(rdev->wowlan);
109}
110
111extern struct workqueue_struct *cfg80211_wq;
112extern struct mutex cfg80211_mutex;
113extern struct list_head cfg80211_rdev_list;
114extern int cfg80211_rdev_list_generation;
115
116static inline void assert_cfg80211_lock(void)
117{
118 lockdep_assert_held(&cfg80211_mutex);
119}
120
121/*
122 * You can use this to mark a wiphy_idx as not having an associated wiphy.
123 * It guarantees cfg80211_rdev_by_wiphy_idx(wiphy_idx) will return NULL
124 */
125#define WIPHY_IDX_STALE -1
126
127struct cfg80211_internal_bss {
128 struct list_head list;
129 struct rb_node rbn;
130 unsigned long ts;
131 struct kref ref;
132 atomic_t hold;
133 bool beacon_ies_allocated;
134 bool proberesp_ies_allocated;
135
136 /* must be last because of priv member */
137 struct cfg80211_bss pub;
138};
139
140static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub)
141{
142 return container_of(pub, struct cfg80211_internal_bss, pub);
143}
144
145static inline void cfg80211_ref_bss(struct cfg80211_internal_bss *bss)
146{
147 kref_get(&bss->ref);
148}
149
150static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
151{
152 atomic_inc(&bss->hold);
153}
154
155static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
156{
157 int r = atomic_dec_return(&bss->hold);
158 WARN_ON(r < 0);
159}
160
161
162struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
163int get_wiphy_idx(struct wiphy *wiphy);
164
165struct cfg80211_registered_device *
166__cfg80211_rdev_from_info(struct genl_info *info);
167
168/*
169 * This function returns a pointer to the driver
170 * that the genl_info item that is passed refers to.
171 * If successful, it returns non-NULL and also locks
172 * the driver's mutex!
173 *
174 * This means that you need to call cfg80211_unlock_rdev()
175 * before being allowed to acquire &cfg80211_mutex!
176 *
177 * This is necessary because we need to lock the global
178 * mutex to get an item off the list safely, and then
179 * we lock the rdev mutex so it doesn't go away under us.
180 *
181 * We don't want to keep cfg80211_mutex locked
182 * for all the time in order to allow requests on
183 * other interfaces to go through at the same time.
184 *
185 * The result of this can be a PTR_ERR and hence must
186 * be checked with IS_ERR() for errors.
187 */
188extern struct cfg80211_registered_device *
189cfg80211_get_dev_from_info(struct genl_info *info);
190
191/* requires cfg80211_rdev_mutex to be held! */
192struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
193
194/* identical to cfg80211_get_dev_from_info but only operate on ifindex */
195extern struct cfg80211_registered_device *
196cfg80211_get_dev_from_ifindex(struct net *net, int ifindex);
197
198int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
199 struct net *net);
200
201static inline void cfg80211_lock_rdev(struct cfg80211_registered_device *rdev)
202{
203 mutex_lock(&rdev->mtx);
204}
205
206static inline void cfg80211_unlock_rdev(struct cfg80211_registered_device *rdev)
207{
208 BUG_ON(IS_ERR(rdev) || !rdev);
209 mutex_unlock(&rdev->mtx);
210}
211
212static inline void wdev_lock(struct wireless_dev *wdev)
213 __acquires(wdev)
214{
215 mutex_lock(&wdev->mtx);
216 __acquire(wdev->mtx);
217}
218
219static inline void wdev_unlock(struct wireless_dev *wdev)
220 __releases(wdev)
221{
222 __release(wdev->mtx);
223 mutex_unlock(&wdev->mtx);
224}
225
226#define ASSERT_RDEV_LOCK(rdev) lockdep_assert_held(&(rdev)->mtx)
227#define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
228
229enum cfg80211_event_type {
230 EVENT_CONNECT_RESULT,
231 EVENT_ROAMED,
232 EVENT_DISCONNECTED,
233 EVENT_IBSS_JOINED,
234};
235
236struct cfg80211_event {
237 struct list_head list;
238 enum cfg80211_event_type type;
239
240 union {
241 struct {
242 u8 bssid[ETH_ALEN];
243 const u8 *req_ie;
244 const u8 *resp_ie;
245 size_t req_ie_len;
246 size_t resp_ie_len;
247 u16 status;
248 } cr;
249 struct {
250 struct ieee80211_channel *channel;
251 u8 bssid[ETH_ALEN];
252 const u8 *req_ie;
253 const u8 *resp_ie;
254 size_t req_ie_len;
255 size_t resp_ie_len;
256 } rm;
257 struct {
258 const u8 *ie;
259 size_t ie_len;
260 u16 reason;
261 } dc;
262 struct {
263 u8 bssid[ETH_ALEN];
264 } ij;
265 };
266};
267
268struct cfg80211_cached_keys {
269 struct key_params params[6];
270 u8 data[6][WLAN_MAX_KEY_LEN];
271 int def, defmgmt;
272};
273
274
275/* free object */
276extern void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
277
278extern int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
279 char *newname);
280
281void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
282void wiphy_update_regulatory(struct wiphy *wiphy,
283 enum nl80211_reg_initiator setby);
284
285void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
286void cfg80211_bss_age(struct cfg80211_registered_device *dev,
287 unsigned long age_secs);
288
289/* IBSS */
290int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
291 struct net_device *dev,
292 struct cfg80211_ibss_params *params,
293 struct cfg80211_cached_keys *connkeys);
294int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
295 struct net_device *dev,
296 struct cfg80211_ibss_params *params,
297 struct cfg80211_cached_keys *connkeys);
298void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
299int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
300 struct net_device *dev, bool nowext);
301int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
302 struct net_device *dev, bool nowext);
303void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid);
304int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
305 struct wireless_dev *wdev);
306
307/* mesh */
308extern const struct mesh_config default_mesh_config;
309extern const struct mesh_setup default_mesh_setup;
310int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
311 struct net_device *dev,
312 const struct mesh_setup *setup,
313 const struct mesh_config *conf);
314int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
315 struct net_device *dev,
316 const struct mesh_setup *setup,
317 const struct mesh_config *conf);
318int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
319 struct net_device *dev);
320
321/* MLME */
322int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
323 struct net_device *dev,
324 struct ieee80211_channel *chan,
325 enum nl80211_auth_type auth_type,
326 const u8 *bssid,
327 const u8 *ssid, int ssid_len,
328 const u8 *ie, int ie_len,
329 const u8 *key, int key_len, int key_idx,
330 bool local_state_change);
331int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
332 struct net_device *dev, struct ieee80211_channel *chan,
333 enum nl80211_auth_type auth_type, const u8 *bssid,
334 const u8 *ssid, int ssid_len,
335 const u8 *ie, int ie_len,
336 const u8 *key, int key_len, int key_idx,
337 bool local_state_change);
338int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
339 struct net_device *dev,
340 struct ieee80211_channel *chan,
341 const u8 *bssid, const u8 *prev_bssid,
342 const u8 *ssid, int ssid_len,
343 const u8 *ie, int ie_len, bool use_mfp,
344 struct cfg80211_crypto_settings *crypt);
345int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
346 struct net_device *dev, struct ieee80211_channel *chan,
347 const u8 *bssid, const u8 *prev_bssid,
348 const u8 *ssid, int ssid_len,
349 const u8 *ie, int ie_len, bool use_mfp,
350 struct cfg80211_crypto_settings *crypt);
351int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
352 struct net_device *dev, const u8 *bssid,
353 const u8 *ie, int ie_len, u16 reason,
354 bool local_state_change);
355int 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);
359int 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);
363void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
364 struct net_device *dev);
365void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
366 const u8 *req_ie, size_t req_ie_len,
367 const u8 *resp_ie, size_t resp_ie_len,
368 u16 status, bool wextev,
369 struct cfg80211_bss *bss);
370int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
371 u16 frame_type, const u8 *match_data,
372 int match_len);
373void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
374void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
375int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
376 struct net_device *dev,
377 struct ieee80211_channel *chan, bool offchan,
378 enum nl80211_channel_type channel_type,
379 bool channel_type_valid, unsigned int wait,
380 const u8 *buf, size_t len, u64 *cookie);
381
382/* SME */
383int __cfg80211_connect(struct cfg80211_registered_device *rdev,
384 struct net_device *dev,
385 struct cfg80211_connect_params *connect,
386 struct cfg80211_cached_keys *connkeys,
387 const u8 *prev_bssid);
388int cfg80211_connect(struct cfg80211_registered_device *rdev,
389 struct net_device *dev,
390 struct cfg80211_connect_params *connect,
391 struct cfg80211_cached_keys *connkeys);
392int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
393 struct net_device *dev, u16 reason,
394 bool wextev);
395int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
396 struct net_device *dev, u16 reason,
397 bool wextev);
398void __cfg80211_roamed(struct wireless_dev *wdev,
399 struct ieee80211_channel *channel,
400 const u8 *bssid,
401 const u8 *req_ie, size_t req_ie_len,
402 const u8 *resp_ie, size_t resp_ie_len);
403int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
404 struct wireless_dev *wdev);
405
406void cfg80211_conn_work(struct work_struct *work);
407void cfg80211_sme_failed_assoc(struct wireless_dev *wdev);
408bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev);
409
410/* internal helpers */
411int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
412 struct key_params *params, int key_idx,
413 bool pairwise, const u8 *mac_addr);
414void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
415 size_t ie_len, u16 reason, bool from_ap);
416void cfg80211_sme_scan_done(struct net_device *dev);
417void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
418void cfg80211_sme_disassoc(struct net_device *dev, int idx);
419void __cfg80211_scan_done(struct work_struct *wk);
420void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak);
421void __cfg80211_sched_scan_results(struct work_struct *wk);
422int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
423 bool driver_initiated);
424void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
425int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
426 struct net_device *dev, enum nl80211_iftype ntype,
427 u32 *flags, struct vif_params *params);
428void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
429
430int cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
431 struct wireless_dev *wdev,
432 enum nl80211_iftype iftype);
433
434static inline int
435cfg80211_can_add_interface(struct cfg80211_registered_device *rdev,
436 enum nl80211_iftype iftype)
437{
438 return cfg80211_can_change_interface(rdev, NULL, iftype);
439}
440
441struct ieee80211_channel *
442rdev_freq_to_chan(struct cfg80211_registered_device *rdev,
443 int freq, enum nl80211_channel_type channel_type);
444int cfg80211_set_freq(struct cfg80211_registered_device *rdev,
445 struct wireless_dev *wdev, int freq,
446 enum nl80211_channel_type channel_type);
447
448u16 cfg80211_calculate_bitrate(struct rate_info *rate);
449
450int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
451 const u8 *rates, unsigned int n_rates,
452 u32 *mask);
453
454int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
455 u32 beacon_int);
456
457#ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
458#define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
459#else
460/*
461 * Trick to enable using it as a condition,
462 * and also not give a warning when it's
463 * not used that way.
464 */
465#define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
466#endif
467
468#endif /* __NET_WIRELESS_CORE_H */
1/*
2 * Wireless configuration interface internals.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 */
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>
17#include "reg.h"
18
19
20#define WIPHY_IDX_INVALID -1
21
22struct cfg80211_registered_device {
23 const struct cfg80211_ops *ops;
24 struct list_head list;
25
26 /* rfkill support */
27 struct rfkill_ops rfkill_ops;
28 struct rfkill *rfkill;
29 struct work_struct rfkill_sync;
30
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];
38
39 /*
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
43 */
44 const struct ieee80211_regdomain *requested_regd;
45
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;
49
50 /* wiphy index, internal only */
51 int wiphy_idx;
52
53 /* associated wireless interfaces, protected by rtnl or RCU */
54 struct list_head wdev_list;
55 int devlist_generation, wdev_id;
56 int opencount; /* also protected by devlist_mtx */
57 wait_queue_head_t dev_wait;
58
59 struct list_head beacon_registrations;
60 spinlock_t beacon_registrations_lock;
61
62 struct list_head mlme_unreg;
63 spinlock_t mlme_unreg_lock;
64 struct work_struct mlme_unreg_wk;
65
66 /* protected by RTNL only */
67 int num_running_ifaces;
68 int num_running_monitor_ifaces;
69
70 /* BSSes/scanning */
71 spinlock_t bss_lock;
72 struct list_head bss_list;
73 struct rb_root bss_tree;
74 u32 bss_generation;
75 struct cfg80211_scan_request *scan_req; /* protected by RTNL */
76 struct sk_buff *scan_msg;
77 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
78 unsigned long suspend_at;
79 struct work_struct scan_done_wk;
80 struct work_struct sched_scan_results_wk;
81
82 struct genl_info *cur_cmd_info;
83
84 struct work_struct conn_work;
85 struct work_struct event_work;
86
87 struct delayed_work dfs_update_channels_wk;
88
89 /* netlink port which started critical protocol (0 means not started) */
90 u32 crit_proto_nlportid;
91
92 struct cfg80211_coalesce *coalesce;
93
94 spinlock_t destroy_list_lock;
95 struct list_head destroy_list;
96 struct work_struct destroy_work;
97
98 struct work_struct sched_scan_stop_wk;
99
100 /* must be last because of the way we do wiphy_priv(),
101 * and it should at least be aligned to NETDEV_ALIGN */
102 struct wiphy wiphy __aligned(NETDEV_ALIGN);
103};
104
105static inline
106struct cfg80211_registered_device *wiphy_to_rdev(struct wiphy *wiphy)
107{
108 BUG_ON(!wiphy);
109 return container_of(wiphy, struct cfg80211_registered_device, wiphy);
110}
111
112static inline void
113cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
114{
115#ifdef CONFIG_PM
116 int i;
117
118 if (!rdev->wiphy.wowlan_config)
119 return;
120 for (i = 0; i < rdev->wiphy.wowlan_config->n_patterns; i++)
121 kfree(rdev->wiphy.wowlan_config->patterns[i].mask);
122 kfree(rdev->wiphy.wowlan_config->patterns);
123 if (rdev->wiphy.wowlan_config->tcp &&
124 rdev->wiphy.wowlan_config->tcp->sock)
125 sock_release(rdev->wiphy.wowlan_config->tcp->sock);
126 kfree(rdev->wiphy.wowlan_config->tcp);
127 kfree(rdev->wiphy.wowlan_config->nd_config);
128 kfree(rdev->wiphy.wowlan_config);
129#endif
130}
131
132extern struct workqueue_struct *cfg80211_wq;
133extern struct list_head cfg80211_rdev_list;
134extern int cfg80211_rdev_list_generation;
135
136struct cfg80211_internal_bss {
137 struct list_head list;
138 struct list_head hidden_list;
139 struct rb_node rbn;
140 u64 ts_boottime;
141 unsigned long ts;
142 unsigned long refcount;
143 atomic_t hold;
144
145 /* must be last because of priv member */
146 struct cfg80211_bss pub;
147};
148
149static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub)
150{
151 return container_of(pub, struct cfg80211_internal_bss, pub);
152}
153
154static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
155{
156 atomic_inc(&bss->hold);
157}
158
159static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
160{
161 int r = atomic_dec_return(&bss->hold);
162 WARN_ON(r < 0);
163}
164
165
166struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
167int get_wiphy_idx(struct wiphy *wiphy);
168
169struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
170
171int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
172 struct net *net);
173
174static inline void wdev_lock(struct wireless_dev *wdev)
175 __acquires(wdev)
176{
177 mutex_lock(&wdev->mtx);
178 __acquire(wdev->mtx);
179}
180
181static inline void wdev_unlock(struct wireless_dev *wdev)
182 __releases(wdev)
183{
184 __release(wdev->mtx);
185 mutex_unlock(&wdev->mtx);
186}
187
188#define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
189
190static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
191{
192 ASSERT_RTNL();
193
194 return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
195 rdev->num_running_ifaces > 0;
196}
197
198enum cfg80211_event_type {
199 EVENT_CONNECT_RESULT,
200 EVENT_ROAMED,
201 EVENT_DISCONNECTED,
202 EVENT_IBSS_JOINED,
203 EVENT_STOPPED,
204};
205
206struct cfg80211_event {
207 struct list_head list;
208 enum cfg80211_event_type type;
209
210 union {
211 struct {
212 u8 bssid[ETH_ALEN];
213 const u8 *req_ie;
214 const u8 *resp_ie;
215 size_t req_ie_len;
216 size_t resp_ie_len;
217 u16 status;
218 } cr;
219 struct {
220 const u8 *req_ie;
221 const u8 *resp_ie;
222 size_t req_ie_len;
223 size_t resp_ie_len;
224 struct cfg80211_bss *bss;
225 } rm;
226 struct {
227 const u8 *ie;
228 size_t ie_len;
229 u16 reason;
230 bool locally_generated;
231 } dc;
232 struct {
233 u8 bssid[ETH_ALEN];
234 struct ieee80211_channel *channel;
235 } ij;
236 };
237};
238
239struct cfg80211_cached_keys {
240 struct key_params params[6];
241 u8 data[6][WLAN_MAX_KEY_LEN];
242 int def, defmgmt;
243};
244
245enum cfg80211_chan_mode {
246 CHAN_MODE_UNDEFINED,
247 CHAN_MODE_SHARED,
248 CHAN_MODE_EXCLUSIVE,
249};
250
251struct cfg80211_beacon_registration {
252 struct list_head list;
253 u32 nlportid;
254};
255
256struct cfg80211_iface_destroy {
257 struct list_head list;
258 u32 nlportid;
259};
260
261void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev);
262
263/* free object */
264void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
265
266int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
267 char *newname);
268
269void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
270
271void cfg80211_bss_expire(struct cfg80211_registered_device *rdev);
272void cfg80211_bss_age(struct cfg80211_registered_device *rdev,
273 unsigned long age_secs);
274
275/* IBSS */
276int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
277 struct net_device *dev,
278 struct cfg80211_ibss_params *params,
279 struct cfg80211_cached_keys *connkeys);
280void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
281int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
282 struct net_device *dev, bool nowext);
283int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
284 struct net_device *dev, bool nowext);
285void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid,
286 struct ieee80211_channel *channel);
287int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
288 struct wireless_dev *wdev);
289
290/* mesh */
291extern const struct mesh_config default_mesh_config;
292extern const struct mesh_setup default_mesh_setup;
293int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
294 struct net_device *dev,
295 struct mesh_setup *setup,
296 const struct mesh_config *conf);
297int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
298 struct net_device *dev,
299 struct mesh_setup *setup,
300 const struct mesh_config *conf);
301int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
302 struct net_device *dev);
303int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
304 struct net_device *dev);
305int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
306 struct wireless_dev *wdev,
307 struct cfg80211_chan_def *chandef);
308
309/* OCB */
310int __cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
311 struct net_device *dev,
312 struct ocb_setup *setup);
313int cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
314 struct net_device *dev,
315 struct ocb_setup *setup);
316int __cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
317 struct net_device *dev);
318int cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
319 struct net_device *dev);
320
321/* AP */
322int __cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
323 struct net_device *dev, bool notify);
324int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
325 struct net_device *dev, bool notify);
326
327/* MLME */
328int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
329 struct net_device *dev,
330 struct ieee80211_channel *chan,
331 enum nl80211_auth_type auth_type,
332 const u8 *bssid,
333 const u8 *ssid, int ssid_len,
334 const u8 *ie, int ie_len,
335 const u8 *key, int key_len, int key_idx,
336 const u8 *sae_data, int sae_data_len);
337int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
338 struct net_device *dev,
339 struct ieee80211_channel *chan,
340 const u8 *bssid,
341 const u8 *ssid, int ssid_len,
342 struct cfg80211_assoc_request *req);
343int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
344 struct net_device *dev, const u8 *bssid,
345 const u8 *ie, int ie_len, u16 reason,
346 bool local_state_change);
347int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
348 struct net_device *dev, const u8 *bssid,
349 const u8 *ie, int ie_len, u16 reason,
350 bool local_state_change);
351void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
352 struct net_device *dev);
353int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
354 u16 frame_type, const u8 *match_data,
355 int match_len);
356void cfg80211_mlme_unreg_wk(struct work_struct *wk);
357void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
358void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
359int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
360 struct wireless_dev *wdev,
361 struct cfg80211_mgmt_tx_params *params,
362 u64 *cookie);
363void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
364 const struct ieee80211_ht_cap *ht_capa_mask);
365void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
366 const struct ieee80211_vht_cap *vht_capa_mask);
367
368/* SME events */
369int cfg80211_connect(struct cfg80211_registered_device *rdev,
370 struct net_device *dev,
371 struct cfg80211_connect_params *connect,
372 struct cfg80211_cached_keys *connkeys,
373 const u8 *prev_bssid);
374void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
375 const u8 *req_ie, size_t req_ie_len,
376 const u8 *resp_ie, size_t resp_ie_len,
377 u16 status, bool wextev,
378 struct cfg80211_bss *bss);
379void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
380 size_t ie_len, u16 reason, bool from_ap);
381int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
382 struct net_device *dev, u16 reason,
383 bool wextev);
384void __cfg80211_roamed(struct wireless_dev *wdev,
385 struct cfg80211_bss *bss,
386 const u8 *req_ie, size_t req_ie_len,
387 const u8 *resp_ie, size_t resp_ie_len);
388int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
389 struct wireless_dev *wdev);
390
391/* SME implementation */
392void cfg80211_conn_work(struct work_struct *work);
393void cfg80211_sme_scan_done(struct net_device *dev);
394bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status);
395void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len);
396void cfg80211_sme_disassoc(struct wireless_dev *wdev);
397void cfg80211_sme_deauth(struct wireless_dev *wdev);
398void cfg80211_sme_auth_timeout(struct wireless_dev *wdev);
399void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev);
400
401/* internal helpers */
402bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
403int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
404 struct key_params *params, int key_idx,
405 bool pairwise, const u8 *mac_addr);
406void __cfg80211_scan_done(struct work_struct *wk);
407void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,
408 bool send_message);
409void __cfg80211_sched_scan_results(struct work_struct *wk);
410int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
411 bool driver_initiated);
412void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
413int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
414 struct net_device *dev, enum nl80211_iftype ntype,
415 u32 *flags, struct vif_params *params);
416void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
417void cfg80211_process_wdev_events(struct wireless_dev *wdev);
418
419/**
420 * cfg80211_chandef_dfs_usable - checks if chandef is DFS usable
421 * @wiphy: the wiphy to validate against
422 * @chandef: the channel definition to check
423 *
424 * Checks if chandef is usable and we can/need start CAC on such channel.
425 *
426 * Return: Return true if all channels available and at least
427 * one channel require CAC (NL80211_DFS_USABLE)
428 */
429bool cfg80211_chandef_dfs_usable(struct wiphy *wiphy,
430 const struct cfg80211_chan_def *chandef);
431
432void cfg80211_set_dfs_state(struct wiphy *wiphy,
433 const struct cfg80211_chan_def *chandef,
434 enum nl80211_dfs_state dfs_state);
435
436void cfg80211_dfs_channels_update_work(struct work_struct *work);
437
438unsigned int
439cfg80211_chandef_dfs_cac_time(struct wiphy *wiphy,
440 const struct cfg80211_chan_def *chandef);
441
442static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
443{
444 unsigned long end = jiffies;
445
446 if (end >= start)
447 return jiffies_to_msecs(end - start);
448
449 return jiffies_to_msecs(end + (ULONG_MAX - start) + 1);
450}
451
452void
453cfg80211_get_chan_state(struct wireless_dev *wdev,
454 struct ieee80211_channel **chan,
455 enum cfg80211_chan_mode *chanmode,
456 u8 *radar_detect);
457
458int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
459 struct cfg80211_chan_def *chandef);
460
461int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
462 const u8 *rates, unsigned int n_rates,
463 u32 *mask);
464
465int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
466 u32 beacon_int);
467
468void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
469 enum nl80211_iftype iftype, int num);
470
471void __cfg80211_leave(struct cfg80211_registered_device *rdev,
472 struct wireless_dev *wdev);
473void cfg80211_leave(struct cfg80211_registered_device *rdev,
474 struct wireless_dev *wdev);
475
476void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
477 struct wireless_dev *wdev);
478
479#define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
480
481#ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
482#define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
483#else
484/*
485 * Trick to enable using it as a condition,
486 * and also not give a warning when it's
487 * not used that way.
488 */
489#define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
490#endif
491
492#endif /* __NET_WIRELESS_CORE_H */