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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) 2018-2024 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
173enum bss_source_type {
174 BSS_SOURCE_DIRECT = 0,
175 BSS_SOURCE_MBSSID,
176 BSS_SOURCE_STA_PROFILE,
177};
178
179struct cfg80211_internal_bss {
180 struct list_head list;
181 struct list_head hidden_list;
182 struct rb_node rbn;
183 u64 ts_boottime;
184 unsigned long ts;
185 unsigned long refcount;
186 atomic_t hold;
187
188 /* time at the start of the reception of the first octet of the
189 * timestamp field of the last beacon/probe received for this BSS.
190 * The time is the TSF of the BSS specified by %parent_bssid.
191 */
192 u64 parent_tsf;
193
194 /* the BSS according to which %parent_tsf is set. This is set to
195 * the BSS that the interface that requested the scan was connected to
196 * when the beacon/probe was received.
197 */
198 u8 parent_bssid[ETH_ALEN] __aligned(2);
199
200 enum bss_source_type bss_source;
201
202 /* must be last because of priv member */
203 struct cfg80211_bss pub;
204};
205
206static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub)
207{
208 return container_of(pub, struct cfg80211_internal_bss, pub);
209}
210
211static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
212{
213 atomic_inc(&bss->hold);
214 if (bss->pub.transmitted_bss) {
215 bss = container_of(bss->pub.transmitted_bss,
216 struct cfg80211_internal_bss, pub);
217 atomic_inc(&bss->hold);
218 }
219}
220
221static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
222{
223 int r = atomic_dec_return(&bss->hold);
224 WARN_ON(r < 0);
225 if (bss->pub.transmitted_bss) {
226 bss = container_of(bss->pub.transmitted_bss,
227 struct cfg80211_internal_bss, pub);
228 r = atomic_dec_return(&bss->hold);
229 WARN_ON(r < 0);
230 }
231}
232
233
234struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
235int get_wiphy_idx(struct wiphy *wiphy);
236
237struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
238
239int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
240 struct net *net);
241
242void cfg80211_init_wdev(struct wireless_dev *wdev);
243void cfg80211_register_wdev(struct cfg80211_registered_device *rdev,
244 struct wireless_dev *wdev);
245
246static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
247{
248 lockdep_assert_held(&rdev->wiphy.mtx);
249
250 return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
251 rdev->num_running_ifaces > 0;
252}
253
254enum cfg80211_event_type {
255 EVENT_CONNECT_RESULT,
256 EVENT_ROAMED,
257 EVENT_DISCONNECTED,
258 EVENT_IBSS_JOINED,
259 EVENT_STOPPED,
260 EVENT_PORT_AUTHORIZED,
261};
262
263struct cfg80211_event {
264 struct list_head list;
265 enum cfg80211_event_type type;
266
267 union {
268 struct cfg80211_connect_resp_params cr;
269 struct cfg80211_roam_info rm;
270 struct {
271 const u8 *ie;
272 size_t ie_len;
273 u16 reason;
274 bool locally_generated;
275 } dc;
276 struct {
277 u8 bssid[ETH_ALEN];
278 struct ieee80211_channel *channel;
279 } ij;
280 struct {
281 u8 peer_addr[ETH_ALEN];
282 const u8 *td_bitmap;
283 u8 td_bitmap_len;
284 } pa;
285 };
286};
287
288struct cfg80211_cached_keys {
289 struct key_params params[4];
290 u8 data[4][WLAN_KEY_LEN_WEP104];
291 int def;
292};
293
294struct cfg80211_beacon_registration {
295 struct list_head list;
296 u32 nlportid;
297};
298
299struct cfg80211_cqm_config {
300 struct rcu_head rcu_head;
301 u32 rssi_hyst;
302 s32 last_rssi_event_value;
303 enum nl80211_cqm_rssi_threshold_event last_rssi_event_type;
304 bool use_range_api;
305 int n_rssi_thresholds;
306 s32 rssi_thresholds[] __counted_by(n_rssi_thresholds);
307};
308
309void cfg80211_cqm_rssi_notify_work(struct wiphy *wiphy,
310 struct wiphy_work *work);
311
312void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev);
313
314/* free object */
315void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
316
317int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
318 char *newname);
319
320void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
321
322void cfg80211_bss_expire(struct cfg80211_registered_device *rdev);
323void cfg80211_bss_age(struct cfg80211_registered_device *rdev,
324 unsigned long age_secs);
325void cfg80211_update_assoc_bss_entry(struct wireless_dev *wdev,
326 unsigned int link,
327 struct ieee80211_channel *channel);
328
329/* IBSS */
330int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
331 struct net_device *dev,
332 struct cfg80211_ibss_params *params,
333 struct cfg80211_cached_keys *connkeys);
334void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
335int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
336 struct net_device *dev, bool nowext);
337void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid,
338 struct ieee80211_channel *channel);
339int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
340 struct wireless_dev *wdev);
341
342/* mesh */
343extern const struct mesh_config default_mesh_config;
344extern const struct mesh_setup default_mesh_setup;
345int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
346 struct net_device *dev,
347 struct mesh_setup *setup,
348 const struct mesh_config *conf);
349int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
350 struct net_device *dev);
351int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
352 struct wireless_dev *wdev,
353 struct cfg80211_chan_def *chandef);
354
355/* OCB */
356int cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
357 struct net_device *dev,
358 struct ocb_setup *setup);
359int cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
360 struct net_device *dev);
361
362/* AP */
363int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
364 struct net_device *dev, int link,
365 bool notify);
366
367/* MLME */
368int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
369 struct net_device *dev,
370 struct cfg80211_auth_request *req);
371int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
372 struct net_device *dev,
373 struct cfg80211_assoc_request *req,
374 struct netlink_ext_ack *extack);
375int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
376 struct net_device *dev, const u8 *bssid,
377 const u8 *ie, int ie_len, u16 reason,
378 bool local_state_change);
379int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
380 struct net_device *dev, const u8 *ap_addr,
381 const u8 *ie, int ie_len, u16 reason,
382 bool local_state_change);
383void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
384 struct net_device *dev);
385int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
386 u16 frame_type, const u8 *match_data,
387 int match_len, bool multicast_rx,
388 struct netlink_ext_ack *extack);
389void cfg80211_mgmt_registrations_update_wk(struct work_struct *wk);
390void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
391void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
392int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
393 struct wireless_dev *wdev,
394 struct cfg80211_mgmt_tx_params *params,
395 u64 *cookie);
396void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
397 const struct ieee80211_ht_cap *ht_capa_mask);
398void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
399 const struct ieee80211_vht_cap *vht_capa_mask);
400
401/* SME events */
402int cfg80211_connect(struct cfg80211_registered_device *rdev,
403 struct net_device *dev,
404 struct cfg80211_connect_params *connect,
405 struct cfg80211_cached_keys *connkeys,
406 const u8 *prev_bssid);
407void __cfg80211_connect_result(struct net_device *dev,
408 struct cfg80211_connect_resp_params *params,
409 bool wextev);
410void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
411 size_t ie_len, u16 reason, bool from_ap);
412int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
413 struct net_device *dev, u16 reason,
414 bool wextev);
415void __cfg80211_roamed(struct wireless_dev *wdev,
416 struct cfg80211_roam_info *info);
417void __cfg80211_port_authorized(struct wireless_dev *wdev, const u8 *peer_addr,
418 const u8 *td_bitmap, u8 td_bitmap_len);
419int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
420 struct wireless_dev *wdev);
421void cfg80211_autodisconnect_wk(struct work_struct *work);
422
423/* SME implementation */
424void cfg80211_conn_work(struct work_struct *work);
425void cfg80211_sme_scan_done(struct net_device *dev);
426bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status);
427void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len);
428void cfg80211_sme_disassoc(struct wireless_dev *wdev);
429void cfg80211_sme_deauth(struct wireless_dev *wdev);
430void cfg80211_sme_auth_timeout(struct wireless_dev *wdev);
431void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev);
432void cfg80211_sme_abandon_assoc(struct wireless_dev *wdev);
433
434/* internal helpers */
435bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
436bool cfg80211_valid_key_idx(struct cfg80211_registered_device *rdev,
437 int key_idx, bool pairwise);
438int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
439 struct key_params *params, int key_idx,
440 bool pairwise, const u8 *mac_addr);
441void __cfg80211_scan_done(struct wiphy *wiphy, struct wiphy_work *wk);
442void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,
443 bool send_message);
444void cfg80211_add_sched_scan_req(struct cfg80211_registered_device *rdev,
445 struct cfg80211_sched_scan_request *req);
446int cfg80211_sched_scan_req_possible(struct cfg80211_registered_device *rdev,
447 bool want_multi);
448void cfg80211_sched_scan_results_wk(struct work_struct *work);
449int cfg80211_stop_sched_scan_req(struct cfg80211_registered_device *rdev,
450 struct cfg80211_sched_scan_request *req,
451 bool driver_initiated);
452int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
453 u64 reqid, bool driver_initiated);
454void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
455int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
456 struct net_device *dev, enum nl80211_iftype ntype,
457 struct vif_params *params);
458void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
459void cfg80211_process_wiphy_works(struct cfg80211_registered_device *rdev,
460 struct wiphy_work *end);
461void cfg80211_process_wdev_events(struct wireless_dev *wdev);
462
463bool cfg80211_does_bw_fit_range(const struct ieee80211_freq_range *freq_range,
464 u32 center_freq_khz, u32 bw_khz);
465
466int cfg80211_scan(struct cfg80211_registered_device *rdev);
467
468extern struct work_struct cfg80211_disconnect_work;
469
470#define NL80211_BSS_USE_FOR_ALL (NL80211_BSS_USE_FOR_NORMAL | \
471 NL80211_BSS_USE_FOR_MLD_LINK)
472
473void cfg80211_set_dfs_state(struct wiphy *wiphy,
474 const struct cfg80211_chan_def *chandef,
475 enum nl80211_dfs_state dfs_state);
476
477void cfg80211_dfs_channels_update_work(struct work_struct *work);
478
479void cfg80211_sched_dfs_chan_update(struct cfg80211_registered_device *rdev);
480
481int
482cfg80211_start_background_radar_detection(struct cfg80211_registered_device *rdev,
483 struct wireless_dev *wdev,
484 struct cfg80211_chan_def *chandef);
485
486void cfg80211_stop_background_radar_detection(struct wireless_dev *wdev);
487
488void cfg80211_background_cac_done_wk(struct work_struct *work);
489
490void cfg80211_background_cac_abort_wk(struct work_struct *work);
491
492bool cfg80211_any_wiphy_oper_chan(struct wiphy *wiphy,
493 struct ieee80211_channel *chan);
494
495bool cfg80211_beaconing_iface_active(struct wireless_dev *wdev);
496
497bool cfg80211_is_sub_chan(struct cfg80211_chan_def *chandef,
498 struct ieee80211_channel *chan,
499 bool primary_only);
500bool cfg80211_wdev_on_sub_chan(struct wireless_dev *wdev,
501 struct ieee80211_channel *chan,
502 bool primary_only);
503bool _cfg80211_chandef_usable(struct wiphy *wiphy,
504 const struct cfg80211_chan_def *chandef,
505 u32 prohibited_flags,
506 u32 permitting_flags);
507
508static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
509{
510 unsigned long end = jiffies;
511
512 if (end >= start)
513 return jiffies_to_msecs(end - start);
514
515 return jiffies_to_msecs(end + (ULONG_MAX - start) + 1);
516}
517
518int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
519 struct net_device *dev,
520 struct cfg80211_chan_def *chandef);
521
522int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
523 const u8 *rates, unsigned int n_rates,
524 u32 *mask);
525
526int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
527 enum nl80211_iftype iftype, u32 beacon_int);
528
529void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
530 enum nl80211_iftype iftype, int num);
531
532void cfg80211_leave(struct cfg80211_registered_device *rdev,
533 struct wireless_dev *wdev);
534
535void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
536 struct wireless_dev *wdev);
537
538void cfg80211_stop_nan(struct cfg80211_registered_device *rdev,
539 struct wireless_dev *wdev);
540
541struct cfg80211_internal_bss *
542cfg80211_bss_update(struct cfg80211_registered_device *rdev,
543 struct cfg80211_internal_bss *tmp,
544 bool signal_valid, unsigned long ts);
545
546enum ieee80211_ap_reg_power
547cfg80211_get_6ghz_power_type(const u8 *elems, size_t elems_len);
548
549#ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
550#define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
551#else
552/*
553 * Trick to enable using it as a condition,
554 * and also not give a warning when it's
555 * not used that way.
556 */
557#define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
558#endif
559
560void cfg80211_release_pmsr(struct wireless_dev *wdev, u32 portid);
561void cfg80211_pmsr_wdev_down(struct wireless_dev *wdev);
562void cfg80211_pmsr_free_wk(struct work_struct *work);
563
564void cfg80211_remove_link(struct wireless_dev *wdev, unsigned int link_id);
565void cfg80211_remove_links(struct wireless_dev *wdev);
566int cfg80211_remove_virtual_intf(struct cfg80211_registered_device *rdev,
567 struct wireless_dev *wdev);
568void cfg80211_wdev_release_link_bsses(struct wireless_dev *wdev, u16 link_mask);
569
570/**
571 * struct cfg80211_colocated_ap - colocated AP information
572 *
573 * @list: linked list to all colocated APs
574 * @bssid: BSSID of the reported AP
575 * @ssid: SSID of the reported AP
576 * @ssid_len: length of the ssid
577 * @center_freq: frequency the reported AP is on
578 * @unsolicited_probe: the reported AP is part of an ESS, where all the APs
579 * that operate in the same channel as the reported AP and that might be
580 * detected by a STA receiving this frame, are transmitting unsolicited
581 * Probe Response frames every 20 TUs
582 * @oct_recommended: OCT is recommended to exchange MMPDUs with the reported AP
583 * @same_ssid: the reported AP has the same SSID as the reporting AP
584 * @multi_bss: the reported AP is part of a multiple BSSID set
585 * @transmitted_bssid: the reported AP is the transmitting BSSID
586 * @colocated_ess: all the APs that share the same ESS as the reported AP are
587 * colocated and can be discovered via legacy bands.
588 * @short_ssid_valid: short_ssid is valid and can be used
589 * @short_ssid: the short SSID for this SSID
590 * @psd_20: The 20MHz PSD EIRP of the primary 20MHz channel for the reported AP
591 */
592struct cfg80211_colocated_ap {
593 struct list_head list;
594 u8 bssid[ETH_ALEN];
595 u8 ssid[IEEE80211_MAX_SSID_LEN];
596 size_t ssid_len;
597 u32 short_ssid;
598 u32 center_freq;
599 u8 unsolicited_probe:1,
600 oct_recommended:1,
601 same_ssid:1,
602 multi_bss:1,
603 transmitted_bssid:1,
604 colocated_ess:1,
605 short_ssid_valid:1;
606 s8 psd_20;
607};
608
609#if IS_ENABLED(CONFIG_CFG80211_KUNIT_TEST)
610#define EXPORT_SYMBOL_IF_CFG80211_KUNIT(sym) EXPORT_SYMBOL_IF_KUNIT(sym)
611#define VISIBLE_IF_CFG80211_KUNIT
612void cfg80211_free_coloc_ap_list(struct list_head *coloc_ap_list);
613
614int cfg80211_parse_colocated_ap(const struct cfg80211_bss_ies *ies,
615 struct list_head *list);
616
617size_t cfg80211_gen_new_ie(const u8 *ie, size_t ielen,
618 const u8 *subie, size_t subie_len,
619 u8 *new_ie, size_t new_ie_len);
620#else
621#define EXPORT_SYMBOL_IF_CFG80211_KUNIT(sym)
622#define VISIBLE_IF_CFG80211_KUNIT static
623#endif /* IS_ENABLED(CONFIG_CFG80211_KUNIT_TEST) */
624
625#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/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 */