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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/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Wireless configuration interface internals.
4 *
5 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
6 * Copyright (C) 2018-2019 Intel Corporation
7 */
8#ifndef __NET_WIRELESS_CORE_H
9#define __NET_WIRELESS_CORE_H
10#include <linux/list.h>
11#include <linux/netdevice.h>
12#include <linux/rbtree.h>
13#include <linux/debugfs.h>
14#include <linux/rfkill.h>
15#include <linux/workqueue.h>
16#include <linux/rtnetlink.h>
17#include <net/genetlink.h>
18#include <net/cfg80211.h>
19#include "reg.h"
20
21
22#define WIPHY_IDX_INVALID -1
23
24struct cfg80211_registered_device {
25 const struct cfg80211_ops *ops;
26 struct list_head list;
27
28 /* rfkill support */
29 struct rfkill_ops rfkill_ops;
30 struct rfkill *rfkill;
31 struct work_struct rfkill_block;
32
33 /* ISO / IEC 3166 alpha2 for which this device is receiving
34 * country IEs on, this can help disregard country IEs from APs
35 * on the same alpha2 quickly. The alpha2 may differ from
36 * cfg80211_regdomain's alpha2 when an intersection has occurred.
37 * If the AP is reconfigured this can also be used to tell us if
38 * the country on the country IE changed. */
39 char country_ie_alpha2[2];
40
41 /*
42 * the driver requests the regulatory core to set this regulatory
43 * domain as the wiphy's. Only used for %REGULATORY_WIPHY_SELF_MANAGED
44 * devices using the regulatory_set_wiphy_regd() API
45 */
46 const struct ieee80211_regdomain *requested_regd;
47
48 /* If a Country IE has been received this tells us the environment
49 * which its telling us its in. This defaults to ENVIRON_ANY */
50 enum environment_cap env;
51
52 /* wiphy index, internal only */
53 int wiphy_idx;
54
55 /* protected by RTNL */
56 int devlist_generation, wdev_id;
57 int opencount;
58 wait_queue_head_t dev_wait;
59
60 struct list_head beacon_registrations;
61 spinlock_t beacon_registrations_lock;
62
63 /* protected by RTNL only */
64 int num_running_ifaces;
65 int num_running_monitor_ifaces;
66 u64 cookie_counter;
67
68 /* BSSes/scanning */
69 spinlock_t bss_lock;
70 struct list_head bss_list;
71 struct rb_root bss_tree;
72 u32 bss_generation;
73 u32 bss_entries;
74 struct cfg80211_scan_request *scan_req; /* protected by RTNL */
75 struct sk_buff *scan_msg;
76 struct list_head sched_scan_req_list;
77 time64_t suspend_at;
78 struct work_struct scan_done_wk;
79
80 struct genl_info *cur_cmd_info;
81
82 struct work_struct conn_work;
83 struct work_struct event_work;
84
85 struct delayed_work dfs_update_channels_wk;
86
87 /* netlink port which started critical protocol (0 means not started) */
88 u32 crit_proto_nlportid;
89
90 struct cfg80211_coalesce *coalesce;
91
92 struct work_struct destroy_work;
93 struct work_struct sched_scan_stop_wk;
94 struct work_struct sched_scan_res_wk;
95
96 struct cfg80211_chan_def radar_chandef;
97 struct work_struct propagate_radar_detect_wk;
98
99 struct cfg80211_chan_def cac_done_chandef;
100 struct work_struct propagate_cac_done_wk;
101
102 struct work_struct mgmt_registrations_update_wk;
103
104 /* must be last because of the way we do wiphy_priv(),
105 * and it should at least be aligned to NETDEV_ALIGN */
106 struct wiphy wiphy __aligned(NETDEV_ALIGN);
107};
108
109static inline
110struct cfg80211_registered_device *wiphy_to_rdev(struct wiphy *wiphy)
111{
112 BUG_ON(!wiphy);
113 return container_of(wiphy, struct cfg80211_registered_device, wiphy);
114}
115
116static inline void
117cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
118{
119#ifdef CONFIG_PM
120 int i;
121
122 if (!rdev->wiphy.wowlan_config)
123 return;
124 for (i = 0; i < rdev->wiphy.wowlan_config->n_patterns; i++)
125 kfree(rdev->wiphy.wowlan_config->patterns[i].mask);
126 kfree(rdev->wiphy.wowlan_config->patterns);
127 if (rdev->wiphy.wowlan_config->tcp &&
128 rdev->wiphy.wowlan_config->tcp->sock)
129 sock_release(rdev->wiphy.wowlan_config->tcp->sock);
130 kfree(rdev->wiphy.wowlan_config->tcp);
131 kfree(rdev->wiphy.wowlan_config->nd_config);
132 kfree(rdev->wiphy.wowlan_config);
133#endif
134}
135
136static inline u64 cfg80211_assign_cookie(struct cfg80211_registered_device *rdev)
137{
138 u64 r = ++rdev->cookie_counter;
139
140 if (WARN_ON(r == 0))
141 r = ++rdev->cookie_counter;
142
143 return r;
144}
145
146extern struct workqueue_struct *cfg80211_wq;
147extern struct list_head cfg80211_rdev_list;
148extern int cfg80211_rdev_list_generation;
149
150struct cfg80211_internal_bss {
151 struct list_head list;
152 struct list_head hidden_list;
153 struct rb_node rbn;
154 u64 ts_boottime;
155 unsigned long ts;
156 unsigned long refcount;
157 atomic_t hold;
158
159 /* time at the start of the reception of the first octet of the
160 * timestamp field of the last beacon/probe received for this BSS.
161 * The time is the TSF of the BSS specified by %parent_bssid.
162 */
163 u64 parent_tsf;
164
165 /* the BSS according to which %parent_tsf is set. This is set to
166 * the BSS that the interface that requested the scan was connected to
167 * when the beacon/probe was received.
168 */
169 u8 parent_bssid[ETH_ALEN] __aligned(2);
170
171 /* must be last because of priv member */
172 struct cfg80211_bss pub;
173};
174
175static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub)
176{
177 return container_of(pub, struct cfg80211_internal_bss, pub);
178}
179
180static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
181{
182 atomic_inc(&bss->hold);
183 if (bss->pub.transmitted_bss) {
184 bss = container_of(bss->pub.transmitted_bss,
185 struct cfg80211_internal_bss, pub);
186 atomic_inc(&bss->hold);
187 }
188}
189
190static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
191{
192 int r = atomic_dec_return(&bss->hold);
193 WARN_ON(r < 0);
194 if (bss->pub.transmitted_bss) {
195 bss = container_of(bss->pub.transmitted_bss,
196 struct cfg80211_internal_bss, pub);
197 r = atomic_dec_return(&bss->hold);
198 WARN_ON(r < 0);
199 }
200}
201
202
203struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
204int get_wiphy_idx(struct wiphy *wiphy);
205
206struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
207
208int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
209 struct net *net);
210
211void cfg80211_init_wdev(struct cfg80211_registered_device *rdev,
212 struct wireless_dev *wdev);
213
214static inline void wdev_lock(struct wireless_dev *wdev)
215 __acquires(wdev)
216{
217 mutex_lock(&wdev->mtx);
218 __acquire(wdev->mtx);
219}
220
221static inline void wdev_unlock(struct wireless_dev *wdev)
222 __releases(wdev)
223{
224 __release(wdev->mtx);
225 mutex_unlock(&wdev->mtx);
226}
227
228#define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
229
230static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
231{
232 ASSERT_RTNL();
233
234 return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
235 rdev->num_running_ifaces > 0;
236}
237
238enum cfg80211_event_type {
239 EVENT_CONNECT_RESULT,
240 EVENT_ROAMED,
241 EVENT_DISCONNECTED,
242 EVENT_IBSS_JOINED,
243 EVENT_STOPPED,
244 EVENT_PORT_AUTHORIZED,
245};
246
247struct cfg80211_event {
248 struct list_head list;
249 enum cfg80211_event_type type;
250
251 union {
252 struct cfg80211_connect_resp_params cr;
253 struct cfg80211_roam_info rm;
254 struct {
255 const u8 *ie;
256 size_t ie_len;
257 u16 reason;
258 bool locally_generated;
259 } dc;
260 struct {
261 u8 bssid[ETH_ALEN];
262 struct ieee80211_channel *channel;
263 } ij;
264 struct {
265 u8 bssid[ETH_ALEN];
266 } pa;
267 };
268};
269
270struct cfg80211_cached_keys {
271 struct key_params params[CFG80211_MAX_WEP_KEYS];
272 u8 data[CFG80211_MAX_WEP_KEYS][WLAN_KEY_LEN_WEP104];
273 int def;
274};
275
276enum cfg80211_chan_mode {
277 CHAN_MODE_UNDEFINED,
278 CHAN_MODE_SHARED,
279 CHAN_MODE_EXCLUSIVE,
280};
281
282struct cfg80211_beacon_registration {
283 struct list_head list;
284 u32 nlportid;
285};
286
287struct cfg80211_cqm_config {
288 u32 rssi_hyst;
289 s32 last_rssi_event_value;
290 int n_rssi_thresholds;
291 s32 rssi_thresholds[];
292};
293
294void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev);
295
296/* free object */
297void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
298
299int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
300 char *newname);
301
302void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
303
304void cfg80211_bss_expire(struct cfg80211_registered_device *rdev);
305void cfg80211_bss_age(struct cfg80211_registered_device *rdev,
306 unsigned long age_secs);
307void cfg80211_update_assoc_bss_entry(struct wireless_dev *wdev,
308 struct ieee80211_channel *channel);
309
310/* IBSS */
311int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
312 struct net_device *dev,
313 struct cfg80211_ibss_params *params,
314 struct cfg80211_cached_keys *connkeys);
315void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
316int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
317 struct net_device *dev, bool nowext);
318int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
319 struct net_device *dev, bool nowext);
320void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid,
321 struct ieee80211_channel *channel);
322int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
323 struct wireless_dev *wdev);
324
325/* mesh */
326extern const struct mesh_config default_mesh_config;
327extern const struct mesh_setup default_mesh_setup;
328int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
329 struct net_device *dev,
330 struct mesh_setup *setup,
331 const struct mesh_config *conf);
332int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
333 struct net_device *dev);
334int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
335 struct net_device *dev);
336int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
337 struct wireless_dev *wdev,
338 struct cfg80211_chan_def *chandef);
339
340/* OCB */
341int __cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
342 struct net_device *dev,
343 struct ocb_setup *setup);
344int cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
345 struct net_device *dev,
346 struct ocb_setup *setup);
347int __cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
348 struct net_device *dev);
349int cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
350 struct net_device *dev);
351
352/* AP */
353int __cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
354 struct net_device *dev, bool notify);
355int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
356 struct net_device *dev, bool notify);
357
358/* MLME */
359int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
360 struct net_device *dev,
361 struct ieee80211_channel *chan,
362 enum nl80211_auth_type auth_type,
363 const u8 *bssid,
364 const u8 *ssid, int ssid_len,
365 const u8 *ie, int ie_len,
366 const u8 *key, int key_len, int key_idx,
367 const u8 *auth_data, int auth_data_len);
368int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
369 struct net_device *dev,
370 struct ieee80211_channel *chan,
371 const u8 *bssid,
372 const u8 *ssid, int ssid_len,
373 struct cfg80211_assoc_request *req);
374int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
375 struct net_device *dev, const u8 *bssid,
376 const u8 *ie, int ie_len, u16 reason,
377 bool local_state_change);
378int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
379 struct net_device *dev, const u8 *bssid,
380 const u8 *ie, int ie_len, u16 reason,
381 bool local_state_change);
382void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
383 struct net_device *dev);
384int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
385 u16 frame_type, const u8 *match_data,
386 int match_len, bool multicast_rx,
387 struct netlink_ext_ack *extack);
388void cfg80211_mgmt_registrations_update_wk(struct work_struct *wk);
389void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
390void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
391int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
392 struct wireless_dev *wdev,
393 struct cfg80211_mgmt_tx_params *params,
394 u64 *cookie);
395void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
396 const struct ieee80211_ht_cap *ht_capa_mask);
397void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
398 const struct ieee80211_vht_cap *vht_capa_mask);
399
400/* SME events */
401int cfg80211_connect(struct cfg80211_registered_device *rdev,
402 struct net_device *dev,
403 struct cfg80211_connect_params *connect,
404 struct cfg80211_cached_keys *connkeys,
405 const u8 *prev_bssid);
406void __cfg80211_connect_result(struct net_device *dev,
407 struct cfg80211_connect_resp_params *params,
408 bool wextev);
409void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
410 size_t ie_len, u16 reason, bool from_ap);
411int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
412 struct net_device *dev, u16 reason,
413 bool wextev);
414void __cfg80211_roamed(struct wireless_dev *wdev,
415 struct cfg80211_roam_info *info);
416void __cfg80211_port_authorized(struct wireless_dev *wdev, const u8 *bssid);
417int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
418 struct wireless_dev *wdev);
419void cfg80211_autodisconnect_wk(struct work_struct *work);
420
421/* SME implementation */
422void cfg80211_conn_work(struct work_struct *work);
423void cfg80211_sme_scan_done(struct net_device *dev);
424bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status);
425void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len);
426void cfg80211_sme_disassoc(struct wireless_dev *wdev);
427void cfg80211_sme_deauth(struct wireless_dev *wdev);
428void cfg80211_sme_auth_timeout(struct wireless_dev *wdev);
429void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev);
430void cfg80211_sme_abandon_assoc(struct wireless_dev *wdev);
431
432/* internal helpers */
433bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
434int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
435 struct key_params *params, int key_idx,
436 bool pairwise, const u8 *mac_addr);
437void __cfg80211_scan_done(struct work_struct *wk);
438void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,
439 bool send_message);
440void cfg80211_add_sched_scan_req(struct cfg80211_registered_device *rdev,
441 struct cfg80211_sched_scan_request *req);
442int cfg80211_sched_scan_req_possible(struct cfg80211_registered_device *rdev,
443 bool want_multi);
444void cfg80211_sched_scan_results_wk(struct work_struct *work);
445int cfg80211_stop_sched_scan_req(struct cfg80211_registered_device *rdev,
446 struct cfg80211_sched_scan_request *req,
447 bool driver_initiated);
448int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
449 u64 reqid, bool driver_initiated);
450void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
451int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
452 struct net_device *dev, enum nl80211_iftype ntype,
453 struct vif_params *params);
454void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
455void cfg80211_process_wdev_events(struct wireless_dev *wdev);
456
457bool cfg80211_does_bw_fit_range(const struct ieee80211_freq_range *freq_range,
458 u32 center_freq_khz, u32 bw_khz);
459
460extern struct work_struct cfg80211_disconnect_work;
461
462/**
463 * cfg80211_chandef_dfs_usable - checks if chandef is DFS usable
464 * @wiphy: the wiphy to validate against
465 * @chandef: the channel definition to check
466 *
467 * Checks if chandef is usable and we can/need start CAC on such channel.
468 *
469 * Return: Return true if all channels available and at least
470 * one channel require CAC (NL80211_DFS_USABLE)
471 */
472bool cfg80211_chandef_dfs_usable(struct wiphy *wiphy,
473 const struct cfg80211_chan_def *chandef);
474
475void cfg80211_set_dfs_state(struct wiphy *wiphy,
476 const struct cfg80211_chan_def *chandef,
477 enum nl80211_dfs_state dfs_state);
478
479void cfg80211_dfs_channels_update_work(struct work_struct *work);
480
481unsigned int
482cfg80211_chandef_dfs_cac_time(struct wiphy *wiphy,
483 const struct cfg80211_chan_def *chandef);
484
485void cfg80211_sched_dfs_chan_update(struct cfg80211_registered_device *rdev);
486
487bool cfg80211_any_wiphy_oper_chan(struct wiphy *wiphy,
488 struct ieee80211_channel *chan);
489
490bool cfg80211_beaconing_iface_active(struct wireless_dev *wdev);
491
492bool cfg80211_is_sub_chan(struct cfg80211_chan_def *chandef,
493 struct ieee80211_channel *chan);
494
495static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
496{
497 unsigned long end = jiffies;
498
499 if (end >= start)
500 return jiffies_to_msecs(end - start);
501
502 return jiffies_to_msecs(end + (ULONG_MAX - start) + 1);
503}
504
505void
506cfg80211_get_chan_state(struct wireless_dev *wdev,
507 struct ieee80211_channel **chan,
508 enum cfg80211_chan_mode *chanmode,
509 u8 *radar_detect);
510
511int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
512 struct cfg80211_chan_def *chandef);
513
514int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
515 const u8 *rates, unsigned int n_rates,
516 u32 *mask);
517
518int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
519 enum nl80211_iftype iftype, u32 beacon_int);
520
521void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
522 enum nl80211_iftype iftype, int num);
523
524void __cfg80211_leave(struct cfg80211_registered_device *rdev,
525 struct wireless_dev *wdev);
526void cfg80211_leave(struct cfg80211_registered_device *rdev,
527 struct wireless_dev *wdev);
528
529void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
530 struct wireless_dev *wdev);
531
532void cfg80211_stop_nan(struct cfg80211_registered_device *rdev,
533 struct wireless_dev *wdev);
534
535struct cfg80211_internal_bss *
536cfg80211_bss_update(struct cfg80211_registered_device *rdev,
537 struct cfg80211_internal_bss *tmp,
538 bool signal_valid, unsigned long ts);
539#ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
540#define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
541#else
542/*
543 * Trick to enable using it as a condition,
544 * and also not give a warning when it's
545 * not used that way.
546 */
547#define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
548#endif
549
550void cfg80211_cqm_config_free(struct wireless_dev *wdev);
551
552void cfg80211_release_pmsr(struct wireless_dev *wdev, u32 portid);
553void cfg80211_pmsr_wdev_down(struct wireless_dev *wdev);
554void cfg80211_pmsr_free_wk(struct work_struct *work);
555
556#endif /* __NET_WIRELESS_CORE_H */