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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) 2018-2023 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 work_struct rfkill_block;
31
32 /* ISO / IEC 3166 alpha2 for which this device is receiving
33 * country IEs on, this can help disregard country IEs from APs
34 * on the same alpha2 quickly. The alpha2 may differ from
35 * cfg80211_regdomain's alpha2 when an intersection has occurred.
36 * If the AP is reconfigured this can also be used to tell us if
37 * the country on the country IE changed. */
38 char country_ie_alpha2[2];
39
40 /*
41 * the driver requests the regulatory core to set this regulatory
42 * domain as the wiphy's. Only used for %REGULATORY_WIPHY_SELF_MANAGED
43 * devices using the regulatory_set_wiphy_regd() API
44 */
45 const struct ieee80211_regdomain *requested_regd;
46
47 /* If a Country IE has been received this tells us the environment
48 * which its telling us its in. This defaults to ENVIRON_ANY */
49 enum environment_cap env;
50
51 /* wiphy index, internal only */
52 int wiphy_idx;
53
54 /* protected by RTNL */
55 int devlist_generation, wdev_id;
56 int opencount;
57 wait_queue_head_t dev_wait;
58
59 struct list_head beacon_registrations;
60 spinlock_t beacon_registrations_lock;
61
62 /* protected by RTNL only */
63 int num_running_ifaces;
64 int num_running_monitor_ifaces;
65 u64 cookie_counter;
66
67 /* BSSes/scanning */
68 spinlock_t bss_lock;
69 struct list_head bss_list;
70 struct rb_root bss_tree;
71 u32 bss_generation;
72 u32 bss_entries;
73 struct cfg80211_scan_request *scan_req; /* protected by RTNL */
74 struct cfg80211_scan_request *int_scan_req;
75 struct sk_buff *scan_msg;
76 struct list_head sched_scan_req_list;
77 time64_t suspend_at;
78 struct wiphy_work 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 struct wireless_dev *background_radar_wdev;
88 struct cfg80211_chan_def background_radar_chandef;
89 struct delayed_work background_cac_done_wk;
90 struct work_struct background_cac_abort_wk;
91
92 /* netlink port which started critical protocol (0 means not started) */
93 u32 crit_proto_nlportid;
94
95 struct cfg80211_coalesce *coalesce;
96
97 struct work_struct destroy_work;
98 struct wiphy_work sched_scan_stop_wk;
99 struct work_struct sched_scan_res_wk;
100
101 struct cfg80211_chan_def radar_chandef;
102 struct work_struct propagate_radar_detect_wk;
103
104 struct cfg80211_chan_def cac_done_chandef;
105 struct work_struct propagate_cac_done_wk;
106
107 struct work_struct mgmt_registrations_update_wk;
108 /* lock for all wdev lists */
109 spinlock_t mgmt_registrations_lock;
110
111 struct work_struct wiphy_work;
112 struct list_head wiphy_work_list;
113 /* protects the list above */
114 spinlock_t wiphy_work_lock;
115 bool suspended;
116
117 /* must be last because of the way we do wiphy_priv(),
118 * and it should at least be aligned to NETDEV_ALIGN */
119 struct wiphy wiphy __aligned(NETDEV_ALIGN);
120};
121
122static inline
123struct cfg80211_registered_device *wiphy_to_rdev(struct wiphy *wiphy)
124{
125 BUG_ON(!wiphy);
126 return container_of(wiphy, struct cfg80211_registered_device, wiphy);
127}
128
129static inline void
130cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
131{
132#ifdef CONFIG_PM
133 int i;
134
135 if (!rdev->wiphy.wowlan_config)
136 return;
137 for (i = 0; i < rdev->wiphy.wowlan_config->n_patterns; i++)
138 kfree(rdev->wiphy.wowlan_config->patterns[i].mask);
139 kfree(rdev->wiphy.wowlan_config->patterns);
140 if (rdev->wiphy.wowlan_config->tcp &&
141 rdev->wiphy.wowlan_config->tcp->sock)
142 sock_release(rdev->wiphy.wowlan_config->tcp->sock);
143 kfree(rdev->wiphy.wowlan_config->tcp);
144 kfree(rdev->wiphy.wowlan_config->nd_config);
145 kfree(rdev->wiphy.wowlan_config);
146#endif
147}
148
149static inline u64 cfg80211_assign_cookie(struct cfg80211_registered_device *rdev)
150{
151 u64 r = ++rdev->cookie_counter;
152
153 if (WARN_ON(r == 0))
154 r = ++rdev->cookie_counter;
155
156 return r;
157}
158
159extern struct workqueue_struct *cfg80211_wq;
160extern struct list_head cfg80211_rdev_list;
161extern int cfg80211_rdev_list_generation;
162
163/* This is constructed like this so it can be used in if/else */
164static inline int for_each_rdev_check_rtnl(void)
165{
166 ASSERT_RTNL();
167 return 0;
168}
169#define for_each_rdev(rdev) \
170 if (for_each_rdev_check_rtnl()) {} else \
171 list_for_each_entry(rdev, &cfg80211_rdev_list, list)
172
173struct cfg80211_internal_bss {
174 struct list_head list;
175 struct list_head hidden_list;
176 struct rb_node rbn;
177 u64 ts_boottime;
178 unsigned long ts;
179 unsigned long refcount;
180 atomic_t hold;
181
182 /* time at the start of the reception of the first octet of the
183 * timestamp field of the last beacon/probe received for this BSS.
184 * The time is the TSF of the BSS specified by %parent_bssid.
185 */
186 u64 parent_tsf;
187
188 /* the BSS according to which %parent_tsf is set. This is set to
189 * the BSS that the interface that requested the scan was connected to
190 * when the beacon/probe was received.
191 */
192 u8 parent_bssid[ETH_ALEN] __aligned(2);
193
194 /* must be last because of priv member */
195 struct cfg80211_bss pub;
196};
197
198static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub)
199{
200 return container_of(pub, struct cfg80211_internal_bss, pub);
201}
202
203static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
204{
205 atomic_inc(&bss->hold);
206 if (bss->pub.transmitted_bss) {
207 bss = container_of(bss->pub.transmitted_bss,
208 struct cfg80211_internal_bss, pub);
209 atomic_inc(&bss->hold);
210 }
211}
212
213static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
214{
215 int r = atomic_dec_return(&bss->hold);
216 WARN_ON(r < 0);
217 if (bss->pub.transmitted_bss) {
218 bss = container_of(bss->pub.transmitted_bss,
219 struct cfg80211_internal_bss, pub);
220 r = atomic_dec_return(&bss->hold);
221 WARN_ON(r < 0);
222 }
223}
224
225
226struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
227int get_wiphy_idx(struct wiphy *wiphy);
228
229struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
230
231int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
232 struct net *net);
233
234void cfg80211_init_wdev(struct wireless_dev *wdev);
235void cfg80211_register_wdev(struct cfg80211_registered_device *rdev,
236 struct wireless_dev *wdev);
237
238static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
239{
240 lockdep_assert_held(&rdev->wiphy.mtx);
241
242 return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
243 rdev->num_running_ifaces > 0;
244}
245
246enum cfg80211_event_type {
247 EVENT_CONNECT_RESULT,
248 EVENT_ROAMED,
249 EVENT_DISCONNECTED,
250 EVENT_IBSS_JOINED,
251 EVENT_STOPPED,
252 EVENT_PORT_AUTHORIZED,
253};
254
255struct cfg80211_event {
256 struct list_head list;
257 enum cfg80211_event_type type;
258
259 union {
260 struct cfg80211_connect_resp_params cr;
261 struct cfg80211_roam_info rm;
262 struct {
263 const u8 *ie;
264 size_t ie_len;
265 u16 reason;
266 bool locally_generated;
267 } dc;
268 struct {
269 u8 bssid[ETH_ALEN];
270 struct ieee80211_channel *channel;
271 } ij;
272 struct {
273 u8 peer_addr[ETH_ALEN];
274 const u8 *td_bitmap;
275 u8 td_bitmap_len;
276 } pa;
277 };
278};
279
280struct cfg80211_cached_keys {
281 struct key_params params[4];
282 u8 data[4][WLAN_KEY_LEN_WEP104];
283 int def;
284};
285
286struct cfg80211_beacon_registration {
287 struct list_head list;
288 u32 nlportid;
289};
290
291struct cfg80211_cqm_config {
292 struct rcu_head rcu_head;
293 u32 rssi_hyst;
294 s32 last_rssi_event_value;
295 enum nl80211_cqm_rssi_threshold_event last_rssi_event_type;
296 bool use_range_api;
297 int n_rssi_thresholds;
298 s32 rssi_thresholds[] __counted_by(n_rssi_thresholds);
299};
300
301void cfg80211_cqm_rssi_notify_work(struct wiphy *wiphy,
302 struct wiphy_work *work);
303
304void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev);
305
306/* free object */
307void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
308
309int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
310 char *newname);
311
312void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
313
314void cfg80211_bss_expire(struct cfg80211_registered_device *rdev);
315void cfg80211_bss_age(struct cfg80211_registered_device *rdev,
316 unsigned long age_secs);
317void cfg80211_update_assoc_bss_entry(struct wireless_dev *wdev,
318 unsigned int link,
319 struct ieee80211_channel *channel);
320
321/* IBSS */
322int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
323 struct net_device *dev,
324 struct cfg80211_ibss_params *params,
325 struct cfg80211_cached_keys *connkeys);
326void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
327int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
328 struct net_device *dev, bool nowext);
329void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid,
330 struct ieee80211_channel *channel);
331int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
332 struct wireless_dev *wdev);
333
334/* mesh */
335extern const struct mesh_config default_mesh_config;
336extern const struct mesh_setup default_mesh_setup;
337int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
338 struct net_device *dev,
339 struct mesh_setup *setup,
340 const struct mesh_config *conf);
341int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
342 struct net_device *dev);
343int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
344 struct wireless_dev *wdev,
345 struct cfg80211_chan_def *chandef);
346
347/* OCB */
348int cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
349 struct net_device *dev,
350 struct ocb_setup *setup);
351int cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
352 struct net_device *dev);
353
354/* AP */
355int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
356 struct net_device *dev, int link,
357 bool notify);
358
359/* MLME */
360int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
361 struct net_device *dev,
362 struct cfg80211_auth_request *req);
363int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
364 struct net_device *dev,
365 struct cfg80211_assoc_request *req);
366int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
367 struct net_device *dev, const u8 *bssid,
368 const u8 *ie, int ie_len, u16 reason,
369 bool local_state_change);
370int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
371 struct net_device *dev, const u8 *ap_addr,
372 const u8 *ie, int ie_len, u16 reason,
373 bool local_state_change);
374void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
375 struct net_device *dev);
376int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
377 u16 frame_type, const u8 *match_data,
378 int match_len, bool multicast_rx,
379 struct netlink_ext_ack *extack);
380void cfg80211_mgmt_registrations_update_wk(struct work_struct *wk);
381void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
382void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
383int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
384 struct wireless_dev *wdev,
385 struct cfg80211_mgmt_tx_params *params,
386 u64 *cookie);
387void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
388 const struct ieee80211_ht_cap *ht_capa_mask);
389void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
390 const struct ieee80211_vht_cap *vht_capa_mask);
391
392/* SME events */
393int cfg80211_connect(struct cfg80211_registered_device *rdev,
394 struct net_device *dev,
395 struct cfg80211_connect_params *connect,
396 struct cfg80211_cached_keys *connkeys,
397 const u8 *prev_bssid);
398void __cfg80211_connect_result(struct net_device *dev,
399 struct cfg80211_connect_resp_params *params,
400 bool wextev);
401void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
402 size_t ie_len, u16 reason, bool from_ap);
403int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
404 struct net_device *dev, u16 reason,
405 bool wextev);
406void __cfg80211_roamed(struct wireless_dev *wdev,
407 struct cfg80211_roam_info *info);
408void __cfg80211_port_authorized(struct wireless_dev *wdev, const u8 *peer_addr,
409 const u8 *td_bitmap, u8 td_bitmap_len);
410int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
411 struct wireless_dev *wdev);
412void cfg80211_autodisconnect_wk(struct work_struct *work);
413
414/* SME implementation */
415void cfg80211_conn_work(struct work_struct *work);
416void cfg80211_sme_scan_done(struct net_device *dev);
417bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status);
418void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len);
419void cfg80211_sme_disassoc(struct wireless_dev *wdev);
420void cfg80211_sme_deauth(struct wireless_dev *wdev);
421void cfg80211_sme_auth_timeout(struct wireless_dev *wdev);
422void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev);
423void cfg80211_sme_abandon_assoc(struct wireless_dev *wdev);
424
425/* internal helpers */
426bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
427bool cfg80211_valid_key_idx(struct cfg80211_registered_device *rdev,
428 int key_idx, bool pairwise);
429int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
430 struct key_params *params, int key_idx,
431 bool pairwise, const u8 *mac_addr);
432void __cfg80211_scan_done(struct wiphy *wiphy, struct wiphy_work *wk);
433void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,
434 bool send_message);
435void cfg80211_add_sched_scan_req(struct cfg80211_registered_device *rdev,
436 struct cfg80211_sched_scan_request *req);
437int cfg80211_sched_scan_req_possible(struct cfg80211_registered_device *rdev,
438 bool want_multi);
439void cfg80211_sched_scan_results_wk(struct work_struct *work);
440int cfg80211_stop_sched_scan_req(struct cfg80211_registered_device *rdev,
441 struct cfg80211_sched_scan_request *req,
442 bool driver_initiated);
443int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
444 u64 reqid, bool driver_initiated);
445void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
446int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
447 struct net_device *dev, enum nl80211_iftype ntype,
448 struct vif_params *params);
449void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
450void cfg80211_process_wiphy_works(struct cfg80211_registered_device *rdev,
451 struct wiphy_work *end);
452void cfg80211_process_wdev_events(struct wireless_dev *wdev);
453
454bool cfg80211_does_bw_fit_range(const struct ieee80211_freq_range *freq_range,
455 u32 center_freq_khz, u32 bw_khz);
456
457int cfg80211_scan(struct cfg80211_registered_device *rdev);
458
459extern struct work_struct cfg80211_disconnect_work;
460
461#define NL80211_BSS_USE_FOR_ALL (NL80211_BSS_USE_FOR_NORMAL | \
462 NL80211_BSS_USE_FOR_MLD_LINK)
463
464void cfg80211_set_dfs_state(struct wiphy *wiphy,
465 const struct cfg80211_chan_def *chandef,
466 enum nl80211_dfs_state dfs_state);
467
468void cfg80211_dfs_channels_update_work(struct work_struct *work);
469
470void cfg80211_sched_dfs_chan_update(struct cfg80211_registered_device *rdev);
471
472int
473cfg80211_start_background_radar_detection(struct cfg80211_registered_device *rdev,
474 struct wireless_dev *wdev,
475 struct cfg80211_chan_def *chandef);
476
477void cfg80211_stop_background_radar_detection(struct wireless_dev *wdev);
478
479void cfg80211_background_cac_done_wk(struct work_struct *work);
480
481void cfg80211_background_cac_abort_wk(struct work_struct *work);
482
483bool cfg80211_any_wiphy_oper_chan(struct wiphy *wiphy,
484 struct ieee80211_channel *chan);
485
486bool cfg80211_beaconing_iface_active(struct wireless_dev *wdev);
487
488bool cfg80211_is_sub_chan(struct cfg80211_chan_def *chandef,
489 struct ieee80211_channel *chan,
490 bool primary_only);
491bool cfg80211_wdev_on_sub_chan(struct wireless_dev *wdev,
492 struct ieee80211_channel *chan,
493 bool primary_only);
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
505int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
506 struct cfg80211_chan_def *chandef);
507
508int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
509 const u8 *rates, unsigned int n_rates,
510 u32 *mask);
511
512int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
513 enum nl80211_iftype iftype, u32 beacon_int);
514
515void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
516 enum nl80211_iftype iftype, int num);
517
518void cfg80211_leave(struct cfg80211_registered_device *rdev,
519 struct wireless_dev *wdev);
520
521void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
522 struct wireless_dev *wdev);
523
524void cfg80211_stop_nan(struct cfg80211_registered_device *rdev,
525 struct wireless_dev *wdev);
526
527struct cfg80211_internal_bss *
528cfg80211_bss_update(struct cfg80211_registered_device *rdev,
529 struct cfg80211_internal_bss *tmp,
530 bool signal_valid, unsigned long ts);
531#ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
532#define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
533#else
534/*
535 * Trick to enable using it as a condition,
536 * and also not give a warning when it's
537 * not used that way.
538 */
539#define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
540#endif
541
542void cfg80211_release_pmsr(struct wireless_dev *wdev, u32 portid);
543void cfg80211_pmsr_wdev_down(struct wireless_dev *wdev);
544void cfg80211_pmsr_free_wk(struct work_struct *work);
545
546void cfg80211_remove_link(struct wireless_dev *wdev, unsigned int link_id);
547void cfg80211_remove_links(struct wireless_dev *wdev);
548int cfg80211_remove_virtual_intf(struct cfg80211_registered_device *rdev,
549 struct wireless_dev *wdev);
550void cfg80211_wdev_release_link_bsses(struct wireless_dev *wdev, u16 link_mask);
551
552#if IS_ENABLED(CONFIG_CFG80211_KUNIT_TEST)
553#define EXPORT_SYMBOL_IF_CFG80211_KUNIT(sym) EXPORT_SYMBOL_IF_KUNIT(sym)
554#define VISIBLE_IF_CFG80211_KUNIT
555size_t cfg80211_gen_new_ie(const u8 *ie, size_t ielen,
556 const u8 *subie, size_t subie_len,
557 u8 *new_ie, size_t new_ie_len);
558#else
559#define EXPORT_SYMBOL_IF_CFG80211_KUNIT(sym)
560#define VISIBLE_IF_CFG80211_KUNIT static
561#endif /* IS_ENABLED(CONFIG_CFG80211_KUNIT_TEST) */
562
563#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 */