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cfg80211/mac80211: clean up cfg80211 SME APIs
[linux-2.6-block.git] / net / wireless / core.h
CommitLineData
704232c2
JB		 1/*
2 * Wireless configuration interface internals.
3 *
5f2aa25e 4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
704232c2
JB		 5 */
6#ifndef __NET_WIRELESS_CORE_H
7#define __NET_WIRELESS_CORE_H
704232c2
JB		 8#include <linux/list.h>
9#include <linux/netdevice.h>
2a519311 10#include <linux/rbtree.h>
1ac61302 11#include <linux/debugfs.h>
1f87f7d3
JB		 12#include <linux/rfkill.h>
13#include <linux/workqueue.h>
c5a7e582 14#include <linux/rtnetlink.h>
704232c2 15#include <net/genetlink.h>
704232c2 16#include <net/cfg80211.h>
3f2355cb 17#include "reg.h"
704232c2 18
f4173766
JB		 19
20#define WIPHY_IDX_INVALID -1
21
704232c2 22struct cfg80211_registered_device {
3dcf670b 23 const struct cfg80211_ops *ops;
704232c2 24 struct list_head list;
704232c2 25
1f87f7d3
JB		 26 /* rfkill support */
27 struct rfkill_ops rfkill_ops;
28 struct rfkill *rfkill;
29 struct work_struct rfkill_sync;
30
3f2355cb
LR		 31 /* ISO / IEC 3166 alpha2 for which this device is receiving
32 * country IEs on, this can help disregard country IEs from APs
33 * on the same alpha2 quickly. The alpha2 may differ from
34 * cfg80211_regdomain's alpha2 when an intersection has occurred.
35 * If the AP is reconfigured this can also be used to tell us if
36 * the country on the country IE changed. */
37 char country_ie_alpha2[2];
38
39 /* If a Country IE has been received this tells us the environment
40 * which its telling us its in. This defaults to ENVIRON_ANY */
41 enum environment_cap env;
42
704232c2 43 /* wiphy index, internal only */
b5850a7a 44 int wiphy_idx;
704232c2 45
5fe231e8 46 /* associated wireless interfaces, protected by rtnl or RCU */
89a54e48
JB		 47 struct list_head wdev_list;
48 int devlist_generation, wdev_id;
ad002395
JB		 49 int opencount; /* also protected by devlist_mtx */
50 wait_queue_head_t dev_wait;
704232c2 51
37c73b5f
BG		 52 struct list_head beacon_registrations;
53 spinlock_t beacon_registrations_lock;
5e760230 54
c5a7e582 55 /* protected by RTNL only */
dbbae26a
MK		 56 int num_running_ifaces;
57 int num_running_monitor_ifaces;
58
2a519311
JB		 59 /* BSSes/scanning */
60 spinlock_t bss_lock;
61 struct list_head bss_list;
62 struct rb_root bss_tree;
63 u32 bss_generation;
64 struct cfg80211_scan_request *scan_req; /* protected by RTNL */
807f8a8c 65 struct cfg80211_sched_scan_request *sched_scan_req;
cb3a8eec 66 unsigned long suspend_at;
667503dd 67 struct work_struct scan_done_wk;
807f8a8c 68 struct work_struct sched_scan_results_wk;
2a519311 69
aff89a9b
JB		 70#ifdef CONFIG_NL80211_TESTMODE
71 struct genl_info *testmode_info;
72#endif
73
6829c878 74 struct work_struct conn_work;
667503dd 75 struct work_struct event_work;
6829c878 76
04f39047
SW		 77 struct delayed_work dfs_update_channels_wk;
78
5de17984
AS		 79 /* netlink port which started critical protocol (0 means not started) */
80 u32 crit_proto_nlportid;
81
704232c2
JB		 82 /* must be last because of the way we do wiphy_priv(),
83 * and it should at least be aligned to NETDEV_ALIGN */
1c06ef98 84 struct wiphy wiphy __aligned(NETDEV_ALIGN);
704232c2
JB		 85};
86
87static inline
88struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy)
89{
90 BUG_ON(!wiphy);
91 return container_of(wiphy, struct cfg80211_registered_device, wiphy);
92}
93
ff1b6e69
JB		 94static inline void
95cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
96{
6abb9cb9 97#ifdef CONFIG_PM
ff1b6e69
JB		 98 int i;
99
6abb9cb9 100 if (!rdev->wiphy.wowlan_config)
ff1b6e69 101 return;
6abb9cb9
JB		 102 for (i = 0; i < rdev->wiphy.wowlan_config->n_patterns; i++)
103 kfree(rdev->wiphy.wowlan_config->patterns[i].mask);
104 kfree(rdev->wiphy.wowlan_config->patterns);
105 if (rdev->wiphy.wowlan_config->tcp &&
106 rdev->wiphy.wowlan_config->tcp->sock)
107 sock_release(rdev->wiphy.wowlan_config->tcp->sock);
108 kfree(rdev->wiphy.wowlan_config->tcp);
109 kfree(rdev->wiphy.wowlan_config);
110#endif
ff1b6e69 111}
e60d7443
AB		 112
113extern struct workqueue_struct *cfg80211_wq;
79c97e97 114extern struct list_head cfg80211_rdev_list;
f5ea9120 115extern int cfg80211_rdev_list_generation;
704232c2 116
2a519311
JB		 117struct cfg80211_internal_bss {
118 struct list_head list;
776b3580 119 struct list_head hidden_list;
2a519311
JB		 120 struct rb_node rbn;
121 unsigned long ts;
776b3580 122 unsigned long refcount;
19957bb3 123 atomic_t hold;
a08c1c1a 124
2a519311
JB		 125 /* must be last because of priv member */
126 struct cfg80211_bss pub;
127};
128
19957bb3
JB		 129static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub)
130{
131 return container_of(pub, struct cfg80211_internal_bss, pub);
132}
133
134static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
135{
136 atomic_inc(&bss->hold);
137}
138
139static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
140{
141 int r = atomic_dec_return(&bss->hold);
142 WARN_ON(r < 0);
143}
144
145
79c97e97 146struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
806a9e39
LR		 147int get_wiphy_idx(struct wiphy *wiphy);
148
806a9e39
LR		 149struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
150
463d0183
JB		 151int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
152 struct net *net);
55682965 153
667503dd
JB		 154static inline void wdev_lock(struct wireless_dev *wdev)
155 __acquires(wdev)
156{
157 mutex_lock(&wdev->mtx);
158 __acquire(wdev->mtx);
159}
160
161static inline void wdev_unlock(struct wireless_dev *wdev)
162 __releases(wdev)
163{
164 __release(wdev->mtx);
165 mutex_unlock(&wdev->mtx);
166}
167
5fe231e8 168#define ASSERT_RDEV_LOCK(rdev) ASSERT_RTNL()
46a5ebaf 169#define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
667503dd 170
dbbae26a
MK		 171static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
172{
c5a7e582 173 ASSERT_RTNL();
dbbae26a
MK		 174
175 return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
176 rdev->num_running_ifaces > 0;
177}
178
667503dd
JB		 179enum cfg80211_event_type {
180 EVENT_CONNECT_RESULT,
181 EVENT_ROAMED,
182 EVENT_DISCONNECTED,
183 EVENT_IBSS_JOINED,
184};
185
186struct cfg80211_event {
187 struct list_head list;
188 enum cfg80211_event_type type;
189
190 union {
191 struct {
192 u8 bssid[ETH_ALEN];
193 const u8 *req_ie;
194 const u8 *resp_ie;
195 size_t req_ie_len;
196 size_t resp_ie_len;
197 u16 status;
198 } cr;
199 struct {
667503dd
JB		 200 const u8 *req_ie;
201 const u8 *resp_ie;
202 size_t req_ie_len;
203 size_t resp_ie_len;
adbde344 204 struct cfg80211_bss *bss;
667503dd
JB		 205 } rm;
206 struct {
207 const u8 *ie;
208 size_t ie_len;
209 u16 reason;
210 } dc;
211 struct {
212 u8 bssid[ETH_ALEN];
213 } ij;
214 };
215};
216
fffd0934
JB		 217struct cfg80211_cached_keys {
218 struct key_params params[6];
219 u8 data[6][WLAN_MAX_KEY_LEN];
220 int def, defmgmt;
221};
222
26ab9a0c
MK		 223enum cfg80211_chan_mode {
224 CHAN_MODE_UNDEFINED,
225 CHAN_MODE_SHARED,
226 CHAN_MODE_EXCLUSIVE,
227};
228
37c73b5f
BG		 229struct cfg80211_beacon_registration {
230 struct list_head list;
231 u32 nlportid;
232};
667503dd 233
704232c2 234/* free object */
79c97e97 235extern void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
704232c2 236
79c97e97 237extern int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
55682965
JB		 238 char *newname);
239
8318d78a 240void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
8318d78a 241
2a519311 242void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
cb3a8eec
DW		 243void cfg80211_bss_age(struct cfg80211_registered_device *dev,
244 unsigned long age_secs);
2a519311 245
04a773ad 246/* IBSS */
667503dd
JB		 247int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
248 struct net_device *dev,
fffd0934
JB		 249 struct cfg80211_ibss_params *params,
250 struct cfg80211_cached_keys *connkeys);
04a773ad
JB		 251int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
252 struct net_device *dev,
fffd0934
JB		 253 struct cfg80211_ibss_params *params,
254 struct cfg80211_cached_keys *connkeys);
9d308429 255void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
98d3a7ca
JB		 256int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
257 struct net_device *dev, bool nowext);
04a773ad 258int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
9d308429 259 struct net_device *dev, bool nowext);
667503dd 260void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid);
fffd0934
JB		 261int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
262 struct wireless_dev *wdev);
04a773ad 263
29cbe68c
JB		 264/* mesh */
265extern const struct mesh_config default_mesh_config;
c80d545d 266extern const struct mesh_setup default_mesh_setup;
29cbe68c
JB		 267int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
268 struct net_device *dev,
cc1d2806 269 struct mesh_setup *setup,
29cbe68c
JB		 270 const struct mesh_config *conf);
271int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
272 struct net_device *dev,
cc1d2806 273 struct mesh_setup *setup,
29cbe68c
JB		 274 const struct mesh_config *conf);
275int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
276 struct net_device *dev);
683b6d3b
JB		 277int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
278 struct wireless_dev *wdev,
279 struct cfg80211_chan_def *chandef);
29cbe68c 280
60771780
MK		 281/* AP */
282int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
283 struct net_device *dev);
284
19957bb3
JB		 285/* MLME */
286int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
91bf9b26
JB		 287 struct net_device *dev,
288 struct ieee80211_channel *chan,
289 enum nl80211_auth_type auth_type,
290 const u8 *bssid,
19957bb3 291 const u8 *ssid, int ssid_len,
fffd0934 292 const u8 *ie, int ie_len,
e39e5b5e
JM		 293 const u8 *key, int key_len, int key_idx,
294 const u8 *sae_data, int sae_data_len);
19957bb3 295int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
f62fab73
JB		 296 struct net_device *dev,
297 struct ieee80211_channel *chan,
298 const u8 *bssid,
3e5d7649 299 const u8 *ssid, int ssid_len,
f62fab73 300 struct cfg80211_assoc_request *req);
19957bb3
JB		 301int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
302 struct net_device *dev, const u8 *bssid,
d5cdfacb
JM		 303 const u8 *ie, int ie_len, u16 reason,
304 bool local_state_change);
19957bb3
JB		 305int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
306 struct net_device *dev, const u8 *bssid,
d5cdfacb
JM		 307 const u8 *ie, int ie_len, u16 reason,
308 bool local_state_change);
19957bb3
JB		 309void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
310 struct net_device *dev);
667503dd
JB		 311void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
312 const u8 *req_ie, size_t req_ie_len,
313 const u8 *resp_ie, size_t resp_ie_len,
df7fc0f9
JB		 314 u16 status, bool wextev,
315 struct cfg80211_bss *bss);
2e161f78
JB		 316int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
317 u16 frame_type, const u8 *match_data,
318 int match_len);
319void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
320void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
321int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
71bbc994 322 struct wireless_dev *wdev,
f7ca38df 323 struct ieee80211_channel *chan, bool offchan,
42d97a59
JB		 324 unsigned int wait, const u8 *buf, size_t len,
325 bool no_cck, bool dont_wait_for_ack, u64 *cookie);
7e7c8926
BG		 326void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
327 const struct ieee80211_ht_cap *ht_capa_mask);
ee2aca34
JB		 328void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
329 const struct ieee80211_vht_cap *vht_capa_mask);
19957bb3 330
b23aa676
SO		 331/* SME */
332int cfg80211_connect(struct cfg80211_registered_device *rdev,
333 struct net_device *dev,
fffd0934 334 struct cfg80211_connect_params *connect,
83739b03
JB		 335 struct cfg80211_cached_keys *connkeys,
336 const u8 *prev_bssid);
b23aa676 337int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
f2129354
JB		 338 struct net_device *dev, u16 reason,
339 bool wextev);
ed9d0102 340void __cfg80211_roamed(struct wireless_dev *wdev,
adbde344 341 struct cfg80211_bss *bss,
667503dd
JB		 342 const u8 *req_ie, size_t req_ie_len,
343 const u8 *resp_ie, size_t resp_ie_len);
fffd0934
JB		 344int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
345 struct wireless_dev *wdev);
b23aa676 346
6829c878 347void cfg80211_conn_work(struct work_struct *work);
7d930bc3 348void cfg80211_sme_failed_assoc(struct wireless_dev *wdev);
f401a6f7 349bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev);
6829c878 350
08645126 351/* internal helpers */
38ba3c57 352bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
fffd0934
JB		 353int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
354 struct key_params *params, int key_idx,
e31b8213 355 bool pairwise, const u8 *mac_addr);
667503dd 356void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
6829c878
JB		 357 size_t ie_len, u16 reason, bool from_ap);
358void cfg80211_sme_scan_done(struct net_device *dev);
359void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
95de817b
JB		 360void cfg80211_sme_disassoc(struct net_device *dev,
361 struct cfg80211_internal_bss *bss);
667503dd 362void __cfg80211_scan_done(struct work_struct *wk);
01a0ac41 363void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak);
807f8a8c
LC		 364void __cfg80211_sched_scan_results(struct work_struct *wk);
365int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
366 bool driver_initiated);
fffd0934 367void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
3d54d255
JB		 368int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
369 struct net_device *dev, enum nl80211_iftype ntype,
370 u32 *flags, struct vif_params *params);
371void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
1f6fc43e 372void cfg80211_process_wdev_events(struct wireless_dev *wdev);
08645126 373
d4e50c59
MK		 374int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
375 struct wireless_dev *wdev,
376 enum nl80211_iftype iftype,
377 struct ieee80211_channel *chan,
11c4a075
SW		 378 enum cfg80211_chan_mode chanmode,
379 u8 radar_detect);
d4e50c59 380
04f39047
SW		 381/**
382 * cfg80211_chandef_dfs_required - checks if radar detection is required
383 * @wiphy: the wiphy to validate against
384 * @chandef: the channel definition to check
385 * Return: 1 if radar detection is required, 0 if it is not, < 0 on error
386 */
387int cfg80211_chandef_dfs_required(struct wiphy *wiphy,
388 const struct cfg80211_chan_def *c);
389
390void cfg80211_set_dfs_state(struct wiphy *wiphy,
391 const struct cfg80211_chan_def *chandef,
392 enum nl80211_dfs_state dfs_state);
393
394void cfg80211_dfs_channels_update_work(struct work_struct *work);
395
396
d4e50c59
MK		 397static inline int
398cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
399 struct wireless_dev *wdev,
400 enum nl80211_iftype iftype)
401{
402 return cfg80211_can_use_iftype_chan(rdev, wdev, iftype, NULL,
11c4a075 403 CHAN_MODE_UNDEFINED, 0);
d4e50c59 404}
7527a782
JB		 405
406static inline int
407cfg80211_can_add_interface(struct cfg80211_registered_device *rdev,
408 enum nl80211_iftype iftype)
409{
410 return cfg80211_can_change_interface(rdev, NULL, iftype);
411}
412
d4e50c59
MK		 413static inline int
414cfg80211_can_use_chan(struct cfg80211_registered_device *rdev,
415 struct wireless_dev *wdev,
416 struct ieee80211_channel *chan,
417 enum cfg80211_chan_mode chanmode)
418{
419 return cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
11c4a075 420 chan, chanmode, 0);
d4e50c59
MK		 421}
422
04f39047
SW		 423static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
424{
425 unsigned long end = jiffies;
426
427 if (end >= start)
428 return jiffies_to_msecs(end - start);
429
430 return jiffies_to_msecs(end + (MAX_JIFFY_OFFSET - start) + 1);
431}
432
26ab9a0c 433void
8e95ea49 434cfg80211_get_chan_state(struct wireless_dev *wdev,
26ab9a0c
MK		 435 struct ieee80211_channel **chan,
436 enum cfg80211_chan_mode *chanmode);
437
e8c9bd5b 438int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
683b6d3b 439 struct cfg80211_chan_def *chandef);
59bbb6f7 440
34850ab2
JB		 441int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
442 const u8 *rates, unsigned int n_rates,
443 u32 *mask);
444
56d1893d
JB		 445int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
446 u32 beacon_int);
447
dbbae26a
MK		 448void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
449 enum nl80211_iftype iftype, int num);
450
81256969
SG		 451void cfg80211_leave(struct cfg80211_registered_device *rdev,
452 struct wireless_dev *wdev);
453
f9f47529
JB		 454void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
455 struct wireless_dev *wdev);
456
d4e50c59
MK		 457#define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
458
f7969969
JB		 459#ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
460#define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
461#else
462/*
463 * Trick to enable using it as a condition,
464 * and also not give a warning when it's
465 * not used that way.
466 */
467#define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
468#endif
469
704232c2 470#endif /* __NET_WIRELESS_CORE_H */
Linux 6.x block layer and io_uring tree(s)