1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright 2002-2005, Instant802 Networks, Inc.
4 * Copyright 2005, Devicescape Software, Inc.
5 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
6 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net>
7 * Copyright 2013-2015 Intel Mobile Communications GmbH
8 * Copyright (C) 2018-2026 Intel Corporation
9 */
10
11 #ifndef IEEE80211_I_H
12 #define IEEE80211_I_H
13
14 #include <linux/kernel.h>
15 #include <linux/device.h>
16 #include <linux/if_ether.h>
17 #include <linux/interrupt.h>
18 #include <linux/list.h>
19 #include <linux/netdevice.h>
20 #include <linux/skbuff.h>
21 #include <linux/workqueue.h>
22 #include <linux/types.h>
23 #include <linux/spinlock.h>
24 #include <linux/etherdevice.h>
25 #include <linux/leds.h>
26 #include <linux/idr.h>
27 #include <linux/rhashtable.h>
28 #include <linux/rbtree.h>
29 #include <kunit/visibility.h>
30 #include <net/ieee80211_radiotap.h>
31 #include <net/cfg80211.h>
32 #include <net/mac80211.h>
33 #include <net/fq.h>
34 #include "key.h"
35 #include "sta_info.h"
36 #include "debug.h"
37 #include "drop.h"
38
39 extern const struct cfg80211_ops mac80211_config_ops;
40
41 struct ieee80211_local;
42 struct ieee80211_mesh_fast_tx;
43
44 /* Maximum number of broadcast/multicast frames to buffer when some of the
45 * associated stations are using power saving. */
46 #define AP_MAX_BC_BUFFER 128
47
48 /* Maximum number of frames buffered to all STAs, including multicast frames.
49 * Note: increasing this limit increases the potential memory requirement. Each
50 * frame can be up to about 2 kB long. */
51 #define TOTAL_MAX_TX_BUFFER 512
52
53 /* Required encryption head and tailroom */
54 #define IEEE80211_ENCRYPT_HEADROOM 8
55 #define IEEE80211_ENCRYPT_TAILROOM 18
56
57 /* power level hasn't been configured (or set to automatic) */
58 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
59
60 /*
61 * Some APs experience problems when working with U-APSD. Decreasing the
62 * probability of that happening by using legacy mode for all ACs but VO isn't
63 * enough.
64 *
65 * Cisco 4410N originally forced us to enable VO by default only because it
66 * treated non-VO ACs as legacy.
67 *
68 * However some APs (notably Netgear R7000) silently reclassify packets to
69 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
70 * clients would never see some frames (e.g. ARP responses) or would fetch them
71 * accidentally after a long time.
72 *
73 * It makes little sense to enable u-APSD queues by default because it needs
74 * userspace applications to be aware of it to actually take advantage of the
75 * possible additional powersavings. Implicitly depending on driver autotrigger
76 * frame support doesn't make much sense.
77 */
78 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
79
80 #define IEEE80211_DEFAULT_MAX_SP_LEN \
81 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
82
83 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS];
84
85 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
86
87 #define IEEE80211_MAX_NAN_INSTANCE_ID 255
88
89 /*
90 * Current mac80211 implementation supports a maximum of 1600 AIDS
91 * for S1G interfaces. With regards to an S1G TIM, this covers 25 blocks
92 * as each block is 64 AIDs.
93 */
94 #define IEEE80211_MAX_SUPPORTED_S1G_AID 1600
95 #define IEEE80211_MAX_SUPPORTED_S1G_TIM_BLOCKS 25
96
97 enum ieee80211_status_data {
98 IEEE80211_STATUS_TYPE_MASK = 0x00f,
99 IEEE80211_STATUS_TYPE_INVALID = 0,
100 IEEE80211_STATUS_TYPE_SMPS = 1,
101 IEEE80211_STATUS_TYPE_NEG_TTLM = 2,
102 IEEE80211_STATUS_SUBDATA_MASK = 0x1ff0,
103 };
104
105 static inline bool
ieee80211_sta_keep_active(struct sta_info * sta,u8 ac)106 ieee80211_sta_keep_active(struct sta_info *sta, u8 ac)
107 {
108 /* Keep a station's queues on the active list for deficit accounting
109 * purposes if it was active or queued during the last 100ms.
110 */
111 return time_before_eq(jiffies, sta->airtime[ac].last_active + HZ / 10);
112 }
113
114 struct ieee80211_bss {
115 u32 device_ts_beacon, device_ts_presp;
116
117 bool wmm_used;
118 bool uapsd_supported;
119
120 #define IEEE80211_MAX_SUPP_RATES 32
121 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
122 size_t supp_rates_len;
123 struct ieee80211_rate *beacon_rate;
124
125 u32 vht_cap_info;
126
127 /*
128 * During association, we save an ERP value from a probe response so
129 * that we can feed ERP info to the driver when handling the
130 * association completes. these fields probably won't be up-to-date
131 * otherwise, you probably don't want to use them.
132 */
133 bool has_erp_value;
134 u8 erp_value;
135
136 /* Keep track of the corruption of the last beacon/probe response. */
137 u8 corrupt_data;
138
139 /* Keep track of what bits of information we have valid info for. */
140 u8 valid_data;
141 };
142
143 /**
144 * enum ieee80211_bss_corrupt_data_flags - BSS data corruption flags
145 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
146 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
147 *
148 * These are bss flags that are attached to a bss in the
149 * @corrupt_data field of &struct ieee80211_bss.
150 */
151 enum ieee80211_bss_corrupt_data_flags {
152 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
153 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
154 };
155
156 /**
157 * enum ieee80211_bss_valid_data_flags - BSS valid data flags
158 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
159 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
160 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
161 *
162 * These are bss flags that are attached to a bss in the
163 * @valid_data field of &struct ieee80211_bss. They show which parts
164 * of the data structure were received as a result of an un-corrupted
165 * beacon/probe response.
166 */
167 enum ieee80211_bss_valid_data_flags {
168 IEEE80211_BSS_VALID_WMM = BIT(1),
169 IEEE80211_BSS_VALID_RATES = BIT(2),
170 IEEE80211_BSS_VALID_ERP = BIT(3)
171 };
172
173 typedef unsigned __bitwise ieee80211_tx_result;
174 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
175 #define TX_DROP ((__force ieee80211_tx_result) 1u)
176 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
177
178 #define IEEE80211_TX_UNICAST BIT(1)
179 #define IEEE80211_TX_PS_BUFFERED BIT(2)
180
181 struct ieee80211_tx_data {
182 struct sk_buff *skb;
183 struct sk_buff_head skbs;
184 struct ieee80211_local *local;
185 struct ieee80211_sub_if_data *sdata;
186 struct sta_info *sta;
187 struct ieee80211_key *key;
188 struct ieee80211_tx_rate rate;
189
190 unsigned int flags;
191 };
192
193 /**
194 * enum ieee80211_packet_rx_flags - packet RX flags
195 * @IEEE80211_RX_AMSDU: a-MSDU packet
196 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
197 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
198 *
199 * These are per-frame flags that are attached to a frame in the
200 * @rx_flags field of &struct ieee80211_rx_status.
201 */
202 enum ieee80211_packet_rx_flags {
203 IEEE80211_RX_AMSDU = BIT(3),
204 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
205 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
206 };
207
208 /**
209 * enum ieee80211_rx_flags - RX data flags
210 *
211 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
212 * to cfg80211_report_obss_beacon().
213 *
214 * These flags are used across handling multiple interfaces
215 * for a single frame.
216 */
217 enum ieee80211_rx_flags {
218 IEEE80211_RX_BEACON_REPORTED = BIT(0),
219 };
220
221 struct ieee80211_rx_data {
222 struct list_head *list;
223 struct sk_buff *skb;
224 struct ieee80211_local *local;
225 struct ieee80211_sub_if_data *sdata;
226 struct ieee80211_link_data *link;
227 struct sta_info *sta;
228 struct link_sta_info *link_sta;
229 struct ieee80211_key *key;
230
231 unsigned int flags;
232
233 /*
234 * Index into sequence numbers array, 0..16
235 * since the last (16) is used for non-QoS,
236 * will be 16 on non-QoS frames.
237 */
238 int seqno_idx;
239
240 /*
241 * Index into the security IV/PN arrays, 0..16
242 * since the last (16) is used for CCMP-encrypted
243 * management frames, will be set to 16 on mgmt
244 * frames and 0 on non-QoS frames.
245 */
246 int security_idx;
247
248 int link_id;
249
250 union {
251 struct {
252 u32 iv32;
253 u16 iv16;
254 } tkip;
255 struct {
256 u8 pn[IEEE80211_CCMP_PN_LEN];
257 } ccm_gcm;
258 };
259 };
260
261 struct ieee80211_csa_settings {
262 const u16 *counter_offsets_beacon;
263 const u16 *counter_offsets_presp;
264
265 int n_counter_offsets_beacon;
266 int n_counter_offsets_presp;
267
268 u8 count;
269 };
270
271 struct ieee80211_color_change_settings {
272 u16 counter_offset_beacon;
273 u16 counter_offset_presp;
274 u8 count;
275 };
276
277 struct beacon_data {
278 u8 *head, *tail;
279 int head_len, tail_len;
280 struct ieee80211_meshconf_ie *meshconf;
281 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
282 u8 cntdwn_current_counter;
283 struct cfg80211_mbssid_elems *mbssid_ies;
284 struct cfg80211_rnr_elems *rnr_ies;
285 struct rcu_head rcu_head;
286 };
287
288 struct probe_resp {
289 struct rcu_head rcu_head;
290 int len;
291 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
292 u8 data[];
293 };
294
295 struct fils_discovery_data {
296 struct rcu_head rcu_head;
297 int len;
298 u8 data[];
299 };
300
301 struct unsol_bcast_probe_resp_data {
302 struct rcu_head rcu_head;
303 int len;
304 u8 data[];
305 };
306
307 struct s1g_short_beacon_data {
308 struct rcu_head rcu_head;
309 u8 *short_head;
310 u8 *short_tail;
311 int short_head_len;
312 int short_tail_len;
313 };
314
315 struct ps_data {
316 /* yes, this looks ugly, but guarantees that we can later use
317 * bitmap_empty :)
318 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
319 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
320 __aligned(__alignof__(unsigned long));
321 struct sk_buff_head bc_buf;
322 atomic_t num_sta_ps; /* number of stations in PS mode */
323 int dtim_count;
324 bool dtim_bc_mc;
325 int sb_count; /* num short beacons til next long beacon */
326 };
327
328 struct ieee80211_if_ap {
329 struct list_head vlans; /* write-protected with RTNL and local->mtx */
330
331 struct ps_data ps;
332 atomic_t num_mcast_sta; /* number of stations receiving multicast */
333
334 bool multicast_to_unicast;
335 bool active;
336 };
337
338 struct ieee80211_if_vlan {
339 struct list_head list; /* write-protected with RTNL and local->mtx */
340
341 /* used for all tx if the VLAN is configured to 4-addr mode */
342 struct sta_info __rcu *sta;
343 atomic_t num_mcast_sta; /* number of stations receiving multicast */
344 };
345
346 struct mesh_stats {
347 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
348 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
349 __u32 fwded_frames; /* Mesh total forwarded frames */
350 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
351 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
352 };
353
354 #define PREQ_Q_F_START 0x1
355 #define PREQ_Q_F_REFRESH 0x2
356 struct mesh_preq_queue {
357 struct list_head list;
358 u8 dst[ETH_ALEN];
359 u8 flags;
360 };
361
362 struct ieee80211_roc_work {
363 struct list_head list;
364
365 struct ieee80211_sub_if_data *sdata;
366
367 struct ieee80211_channel *chan;
368
369 bool started, abort, hw_begun, notified;
370 bool on_channel;
371
372 unsigned long start_time;
373
374 u32 duration, req_duration;
375 struct sk_buff *frame;
376 u64 cookie, mgmt_tx_cookie;
377 enum ieee80211_roc_type type;
378 };
379
380 /* flags used in struct ieee80211_if_managed.flags */
381 enum ieee80211_sta_flags {
382 IEEE80211_STA_CONNECTION_POLL = BIT(1),
383 IEEE80211_STA_CONTROL_PORT = BIT(2),
384 IEEE80211_STA_MFP_ENABLED = BIT(6),
385 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
386 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
387 IEEE80211_STA_ENABLE_RRM = BIT(15),
388 };
389
390 enum ieee80211_conn_mode {
391 IEEE80211_CONN_MODE_S1G,
392 IEEE80211_CONN_MODE_LEGACY,
393 IEEE80211_CONN_MODE_HT,
394 IEEE80211_CONN_MODE_VHT,
395 IEEE80211_CONN_MODE_HE,
396 IEEE80211_CONN_MODE_EHT,
397 IEEE80211_CONN_MODE_UHR,
398 };
399
400 #define IEEE80211_CONN_MODE_HIGHEST IEEE80211_CONN_MODE_UHR
401
402 enum ieee80211_conn_bw_limit {
403 IEEE80211_CONN_BW_LIMIT_20,
404 IEEE80211_CONN_BW_LIMIT_40,
405 IEEE80211_CONN_BW_LIMIT_80,
406 IEEE80211_CONN_BW_LIMIT_160, /* also 80+80 */
407 IEEE80211_CONN_BW_LIMIT_320,
408 };
409
410 struct ieee80211_conn_settings {
411 enum ieee80211_conn_mode mode;
412 enum ieee80211_conn_bw_limit bw_limit;
413 };
414
415 extern const struct ieee80211_conn_settings ieee80211_conn_settings_unlimited;
416
417 struct ieee80211_mgd_auth_data {
418 struct cfg80211_bss *bss;
419 unsigned long timeout;
420 int tries;
421 u16 algorithm, expected_transaction;
422
423 unsigned long userspace_selectors[BITS_TO_LONGS(128)];
424
425 u8 key[WLAN_KEY_LEN_WEP104];
426 u8 key_len, key_idx;
427 bool done, waiting;
428 bool peer_confirmed;
429 bool timeout_started;
430 int link_id;
431
432 u8 ap_addr[ETH_ALEN] __aligned(2);
433
434 u16 trans, status;
435 size_t data_len;
436 u8 data[];
437 };
438
439 struct ieee80211_mgd_assoc_data {
440 struct {
441 struct cfg80211_bss *bss;
442
443 u8 addr[ETH_ALEN] __aligned(2);
444
445 u8 ap_ht_param;
446
447 struct ieee80211_vht_cap ap_vht_cap;
448
449 size_t elems_len;
450 u8 *elems; /* pointing to inside ie[] below */
451
452 struct ieee80211_conn_settings conn;
453
454 u16 status;
455 } link[IEEE80211_MLD_MAX_NUM_LINKS];
456
457 u8 ap_addr[ETH_ALEN] __aligned(2);
458
459 /* this is for a workaround, so we use it only for non-MLO */
460 const u8 *supp_rates;
461 u8 supp_rates_len;
462
463 unsigned long timeout;
464 int tries;
465
466 u8 prev_ap_addr[ETH_ALEN];
467 u8 ssid[IEEE80211_MAX_SSID_LEN];
468 u8 ssid_len;
469 bool wmm, uapsd;
470 bool need_beacon;
471 bool synced;
472 bool timeout_started;
473 bool comeback; /* whether the AP has requested association comeback */
474 bool s1g;
475 bool spp_amsdu;
476
477 s8 assoc_link_id;
478
479 __le16 ext_mld_capa_ops;
480
481 u8 fils_nonces[2 * FILS_NONCE_LEN];
482 u8 fils_kek[FILS_MAX_KEK_LEN];
483 size_t fils_kek_len;
484
485 size_t ie_len;
486 u8 *ie_pos; /* used to fill ie[] with link[].elems */
487 u8 ie[];
488 };
489
490 struct ieee80211_sta_tx_tspec {
491 /* timestamp of the first packet in the time slice */
492 unsigned long time_slice_start;
493
494 u32 admitted_time; /* in usecs, unlike over the air */
495 u8 tsid;
496 s8 up; /* signed to be able to invalidate with -1 during teardown */
497
498 /* consumed TX time in microseconds in the time slice */
499 u32 consumed_tx_time;
500 enum {
501 TX_TSPEC_ACTION_NONE = 0,
502 TX_TSPEC_ACTION_DOWNGRADE,
503 TX_TSPEC_ACTION_STOP_DOWNGRADE,
504 } action;
505 bool downgraded;
506 };
507
508 /* Advertised TID-to-link mapping info */
509 struct ieee80211_adv_ttlm_info {
510 /* time in TUs at which the new mapping is established, or 0 if there is
511 * no planned advertised TID-to-link mapping
512 */
513 u16 switch_time;
514 u32 duration; /* duration of the planned T2L map in TUs */
515 u16 map; /* map of usable links for all TIDs */
516 bool active; /* whether the advertised mapping is active or not */
517 };
518
519 DECLARE_EWMA(beacon_signal, 4, 4)
520
521 struct ieee80211_if_managed {
522 struct timer_list timer;
523 struct timer_list conn_mon_timer;
524 struct timer_list bcn_mon_timer;
525 struct wiphy_work monitor_work;
526 struct wiphy_work beacon_connection_loss_work;
527 struct wiphy_work csa_connection_drop_work;
528
529 unsigned long beacon_timeout;
530 unsigned long probe_timeout;
531 int probe_send_count;
532 bool nullfunc_failed;
533 u8 connection_loss:1,
534 driver_disconnect:1,
535 reconnect:1,
536 associated:1;
537
538 struct ieee80211_mgd_auth_data *auth_data;
539 struct ieee80211_mgd_assoc_data *assoc_data;
540
541 unsigned long userspace_selectors[BITS_TO_LONGS(128)];
542
543 bool powersave; /* powersave requested for this iface */
544 bool broken_ap; /* AP is broken -- turn off powersave */
545
546 unsigned int flags;
547
548 u16 mcast_seq_last;
549
550 bool status_acked;
551 bool status_received;
552 __le16 status_fc;
553
554 enum {
555 IEEE80211_MFP_DISABLED,
556 IEEE80211_MFP_OPTIONAL,
557 IEEE80211_MFP_REQUIRED
558 } mfp; /* management frame protection */
559
560 /*
561 * Bitmask of enabled u-apsd queues,
562 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
563 * to take effect.
564 */
565 unsigned int uapsd_queues;
566
567 /*
568 * Maximum number of buffered frames AP can deliver during a
569 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
570 * Needs a new association to take effect.
571 */
572 unsigned int uapsd_max_sp_len;
573
574 u8 use_4addr;
575
576 /*
577 * State variables for keeping track of RSSI of the AP currently
578 * connected to and informing driver when RSSI has gone
579 * below/above a certain threshold.
580 */
581 int rssi_min_thold, rssi_max_thold;
582
583 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
584 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
585 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
586 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
587 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */
588 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */
589
590 /* TDLS support */
591 u8 tdls_peer[ETH_ALEN] __aligned(2);
592 struct wiphy_delayed_work tdls_peer_del_work;
593 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
594 struct sk_buff *teardown_skb; /* A copy to send through the AP */
595 spinlock_t teardown_lock; /* To lock changing teardown_skb */
596 bool tdls_wider_bw_prohibited;
597
598 /* WMM-AC TSPEC support */
599 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
600 /* Use a separate work struct so that we can do something here
601 * while the sdata->work is flushing the queues, for example.
602 * otherwise, in scenarios where we hardly get any traffic out
603 * on the BE queue, but there's a lot of VO traffic, we might
604 * get stuck in a downgraded situation and flush takes forever.
605 */
606 struct wiphy_delayed_work tx_tspec_wk;
607
608 /* Information elements from the last transmitted (Re)Association
609 * Request frame.
610 */
611 u8 *assoc_req_ies;
612 size_t assoc_req_ies_len;
613
614 struct wiphy_hrtimer_work ml_reconf_work;
615 u16 removed_links;
616
617 /* TID-to-link mapping support */
618 struct wiphy_hrtimer_work ttlm_work;
619 struct ieee80211_adv_ttlm_info ttlm_info;
620 struct wiphy_work teardown_ttlm_work;
621
622 /* dialog token enumerator for neg TTLM request */
623 u8 dialog_token_alloc;
624 struct wiphy_delayed_work neg_ttlm_timeout_work;
625
626 /* Locally initiated multi-link reconfiguration */
627 struct {
628 struct ieee80211_mgd_assoc_data *add_links_data;
629 struct wiphy_delayed_work wk;
630 u16 removed_links;
631 u16 added_links;
632 u8 dialog_token;
633 } reconf;
634
635 /* Support for epcs */
636 struct {
637 bool enabled;
638 u8 dialog_token;
639 } epcs;
640 };
641
642 struct ieee80211_if_ibss {
643 struct timer_list timer;
644 struct wiphy_work csa_connection_drop_work;
645
646 unsigned long last_scan_completed;
647
648 u32 basic_rates;
649
650 bool fixed_bssid;
651 bool fixed_channel;
652 bool privacy;
653
654 bool control_port;
655 bool userspace_handles_dfs;
656
657 u8 bssid[ETH_ALEN] __aligned(2);
658 u8 ssid[IEEE80211_MAX_SSID_LEN];
659 u8 ssid_len, ie_len;
660 u8 *ie;
661 struct cfg80211_chan_def chandef;
662
663 unsigned long ibss_join_req;
664 /* probe response/beacon for IBSS */
665 struct beacon_data __rcu *presp;
666
667 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
668 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
669
670 spinlock_t incomplete_lock;
671 struct list_head incomplete_stations;
672
673 enum {
674 IEEE80211_IBSS_MLME_SEARCH,
675 IEEE80211_IBSS_MLME_JOINED,
676 } state;
677 };
678
679 /**
680 * struct ieee80211_if_ocb - OCB mode state
681 *
682 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
683 * @wrkq_flags: OCB deferred task action
684 * @incomplete_lock: delayed STA insertion lock
685 * @incomplete_stations: list of STAs waiting for delayed insertion
686 * @joined: indication if the interface is connected to an OCB network
687 */
688 struct ieee80211_if_ocb {
689 struct timer_list housekeeping_timer;
690 unsigned long wrkq_flags;
691
692 spinlock_t incomplete_lock;
693 struct list_head incomplete_stations;
694
695 bool joined;
696 };
697
698 /**
699 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
700 *
701 * these declarations define the interface, which enables
702 * vendor-specific mesh synchronization
703 *
704 * @rx_bcn_presp: beacon/probe response was received
705 * @adjust_tsf: TSF adjustment method
706 */
707 struct ieee80211_mesh_sync_ops {
708 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, u16 stype,
709 struct ieee80211_mgmt *mgmt, unsigned int len,
710 const struct ieee80211_meshconf_ie *mesh_cfg,
711 struct ieee80211_rx_status *rx_status);
712
713 /* should be called with beacon_data under RCU read lock */
714 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
715 struct beacon_data *beacon);
716 /* add other framework functions here */
717 };
718
719 struct mesh_csa_settings {
720 struct rcu_head rcu_head;
721 struct cfg80211_csa_settings settings;
722 };
723
724 /**
725 * struct mesh_table - mesh hash table
726 *
727 * @known_gates: list of known mesh gates and their mpaths by the station. The
728 * gate's mpath may or may not be resolved and active.
729 * @gates_lock: protects updates to known_gates
730 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr
731 * @walk_head: linked list containing all mesh_path objects
732 * @walk_lock: lock protecting walk_head
733 * @entries: number of entries in the table
734 */
735 struct mesh_table {
736 struct hlist_head known_gates;
737 spinlock_t gates_lock;
738 struct rhashtable rhead;
739 struct hlist_head walk_head;
740 spinlock_t walk_lock;
741 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */
742 };
743
744 /**
745 * struct mesh_tx_cache - mesh fast xmit header cache
746 *
747 * @rht: hash table containing struct ieee80211_mesh_fast_tx, using skb DA as key
748 * @walk_head: linked list containing all ieee80211_mesh_fast_tx objects
749 * @walk_lock: lock protecting walk_head and rht
750 */
751 struct mesh_tx_cache {
752 struct rhashtable rht;
753 struct hlist_head walk_head;
754 spinlock_t walk_lock;
755 };
756
757 struct ieee80211_if_mesh {
758 struct timer_list housekeeping_timer;
759 struct timer_list mesh_path_timer;
760 struct timer_list mesh_path_root_timer;
761
762 unsigned long wrkq_flags;
763 unsigned long mbss_changed[64 / BITS_PER_LONG];
764
765 bool userspace_handles_dfs;
766
767 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
768 size_t mesh_id_len;
769 /* Active Path Selection Protocol Identifier */
770 u8 mesh_pp_id;
771 /* Active Path Selection Metric Identifier */
772 u8 mesh_pm_id;
773 /* Congestion Control Mode Identifier */
774 u8 mesh_cc_id;
775 /* Synchronization Protocol Identifier */
776 u8 mesh_sp_id;
777 /* Authentication Protocol Identifier */
778 u8 mesh_auth_id;
779 /* Local mesh Sequence Number */
780 u32 sn;
781 /* Last used PREQ ID */
782 u32 preq_id;
783 atomic_t mpaths;
784 /* Timestamp of last SN update */
785 unsigned long last_sn_update;
786 /* Time when it's ok to send next PERR */
787 unsigned long next_perr;
788 /* Timestamp of last PREQ sent */
789 unsigned long last_preq;
790 struct mesh_rmc *rmc;
791 spinlock_t mesh_preq_queue_lock;
792 struct mesh_preq_queue preq_queue;
793 int preq_queue_len;
794 struct mesh_stats mshstats;
795 struct mesh_config mshcfg;
796 atomic_t estab_plinks;
797 atomic_t mesh_seqnum;
798 bool accepting_plinks;
799 int num_gates;
800 struct beacon_data __rcu *beacon;
801 const u8 *ie;
802 u8 ie_len;
803 enum {
804 IEEE80211_MESH_SEC_NONE = 0x0,
805 IEEE80211_MESH_SEC_AUTHED = 0x1,
806 IEEE80211_MESH_SEC_SECURED = 0x2,
807 } security;
808 bool user_mpm;
809 /* Extensible Synchronization Framework */
810 const struct ieee80211_mesh_sync_ops *sync_ops;
811 s64 sync_offset_clockdrift_max;
812 spinlock_t sync_offset_lock;
813 /* mesh power save */
814 enum nl80211_mesh_power_mode nonpeer_pm;
815 int ps_peers_light_sleep;
816 int ps_peers_deep_sleep;
817 struct ps_data ps;
818 /* Channel Switching Support */
819 struct mesh_csa_settings __rcu *csa;
820 enum {
821 IEEE80211_MESH_CSA_ROLE_NONE,
822 IEEE80211_MESH_CSA_ROLE_INIT,
823 IEEE80211_MESH_CSA_ROLE_REPEATER,
824 } csa_role;
825 u8 chsw_ttl;
826 u16 pre_value;
827
828 /* offset from skb->data while building IE */
829 int meshconf_offset;
830
831 struct mesh_table mesh_paths;
832 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */
833 int mesh_paths_generation;
834 int mpp_paths_generation;
835 struct mesh_tx_cache tx_cache;
836 };
837
838 #ifdef CONFIG_MAC80211_MESH
839 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
840 do { (msh)->mshstats.name++; } while (0)
841 #else
842 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
843 do { } while (0)
844 #endif
845
846 /**
847 * enum ieee80211_sub_if_data_flags - virtual interface flags
848 *
849 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
850 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
851 * associated stations and deliver multicast frames both
852 * back to wireless media and to the local net stack.
853 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
854 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
855 * @IEEE80211_SDATA_DISCONNECT_HW_RESTART: Disconnect after hardware restart
856 * recovery
857 */
858 enum ieee80211_sub_if_data_flags {
859 IEEE80211_SDATA_ALLMULTI = BIT(0),
860 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
861 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
862 IEEE80211_SDATA_IN_DRIVER = BIT(5),
863 IEEE80211_SDATA_DISCONNECT_HW_RESTART = BIT(6),
864 };
865
866 /**
867 * enum ieee80211_sdata_state_bits - virtual interface state bits
868 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
869 * mirrors netif_running() but is separate for interface type
870 * change handling while the interface is up
871 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
872 * mode, so queues are stopped
873 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
874 * to offchannel, reset when offchannel returns
875 */
876 enum ieee80211_sdata_state_bits {
877 SDATA_STATE_RUNNING,
878 SDATA_STATE_OFFCHANNEL,
879 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
880 };
881
882 /**
883 * enum ieee80211_chanctx_mode - channel context configuration mode
884 *
885 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
886 * multiple interfaces
887 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
888 * only by a single interface. This can be used for example for
889 * non-fixed channel IBSS.
890 */
891 enum ieee80211_chanctx_mode {
892 IEEE80211_CHANCTX_SHARED,
893 IEEE80211_CHANCTX_EXCLUSIVE
894 };
895
896 /**
897 * enum ieee80211_chanctx_replace_state - channel context replacement state
898 *
899 * This is used for channel context in-place reservations that require channel
900 * context switch/swap.
901 *
902 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
903 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
904 * by a (not yet registered) channel context pointed by %replace_ctx.
905 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
906 * replaces an existing channel context pointed to by %replace_ctx.
907 */
908 enum ieee80211_chanctx_replace_state {
909 IEEE80211_CHANCTX_REPLACE_NONE,
910 IEEE80211_CHANCTX_WILL_BE_REPLACED,
911 IEEE80211_CHANCTX_REPLACES_OTHER,
912 };
913
914 struct ieee80211_chanctx {
915 struct list_head list;
916 struct rcu_head rcu_head;
917
918 enum ieee80211_chanctx_replace_state replace_state;
919 struct ieee80211_chanctx *replace_ctx;
920
921 enum ieee80211_chanctx_mode mode;
922 bool driver_present;
923
924 /* temporary data for search algorithm etc. */
925 struct ieee80211_chan_req req;
926
927 bool radar_detected;
928
929 /* MUST be last - ends in a flexible-array member. */
930 struct ieee80211_chanctx_conf conf;
931 };
932
933 struct mac80211_qos_map {
934 struct cfg80211_qos_map qos_map;
935 struct rcu_head rcu_head;
936 };
937
938 enum txq_info_flags {
939 IEEE80211_TXQ_STOP,
940 IEEE80211_TXQ_AMPDU,
941 IEEE80211_TXQ_NO_AMSDU,
942 IEEE80211_TXQ_DIRTY,
943 };
944
945 /**
946 * struct txq_info - per tid queue
947 *
948 * @tin: contains packets split into multiple flows
949 * @def_cvars: codel vars for the @tin's default_flow
950 * @cstats: code statistics for this queue
951 * @frags: used to keep fragments created after dequeue
952 * @schedule_order: used with ieee80211_local->active_txqs
953 * @schedule_round: counter to prevent infinite loops on TXQ scheduling
954 * @flags: TXQ flags from &enum txq_info_flags
955 * @txq: the driver visible part
956 */
957 struct txq_info {
958 struct fq_tin tin;
959 struct codel_vars def_cvars;
960 struct codel_stats cstats;
961
962 u16 schedule_round;
963 struct list_head schedule_order;
964
965 struct sk_buff_head frags;
966
967 unsigned long flags;
968
969 /* keep last! */
970 struct ieee80211_txq txq;
971 };
972
973 struct ieee80211_if_mntr {
974 u32 flags;
975 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
976
977 struct list_head list;
978 };
979
980 /**
981 * struct ieee80211_if_nan - NAN state
982 *
983 * @conf: current NAN configuration
984 * @started: true iff NAN is started
985 * @func_lock: lock for @func_inst_ids
986 * @function_inst_ids: a bitmap of available instance_id's
987 */
988 struct ieee80211_if_nan {
989 struct cfg80211_nan_conf conf;
990 bool started;
991
992 /* protects function_inst_ids */
993 spinlock_t func_lock;
994 struct idr function_inst_ids;
995 };
996
997 struct ieee80211_link_data_managed {
998 u8 bssid[ETH_ALEN] __aligned(2);
999
1000 u8 dtim_period;
1001 enum ieee80211_smps_mode req_smps, /* requested smps mode */
1002 driver_smps_mode; /* smps mode request */
1003
1004 struct ieee80211_conn_settings conn;
1005
1006 s16 p2p_noa_index;
1007
1008 bool tdls_chan_switch_prohibited;
1009
1010 bool have_beacon;
1011 bool tracking_signal_avg;
1012 bool disable_wmm_tracking;
1013 bool operating_11g_mode;
1014
1015 struct {
1016 struct wiphy_hrtimer_work switch_work;
1017 struct cfg80211_chan_def ap_chandef;
1018 struct ieee80211_parsed_tpe tpe;
1019 ktime_t time;
1020 bool waiting_bcn;
1021 bool ignored_same_chan;
1022 bool blocked_tx;
1023 } csa;
1024
1025 struct wiphy_work request_smps_work;
1026 /* used to reconfigure hardware SM PS */
1027 struct wiphy_work recalc_smps;
1028
1029 bool beacon_crc_valid;
1030 u32 beacon_crc;
1031 struct ewma_beacon_signal ave_beacon_signal;
1032 int last_ave_beacon_signal;
1033
1034 /*
1035 * Number of Beacon frames used in ave_beacon_signal. This can be used
1036 * to avoid generating less reliable cqm events that would be based
1037 * only on couple of received frames.
1038 */
1039 unsigned int count_beacon_signal;
1040
1041 /* Number of times beacon loss was invoked. */
1042 unsigned int beacon_loss_count;
1043
1044 /*
1045 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
1046 * that triggered a cqm event. 0 indicates that no event has been
1047 * generated for the current association.
1048 */
1049 int last_cqm_event_signal;
1050
1051 int wmm_last_param_set;
1052 int mu_edca_last_param_set;
1053 };
1054
1055 struct ieee80211_link_data_ap {
1056 struct beacon_data __rcu *beacon;
1057 struct probe_resp __rcu *probe_resp;
1058 struct fils_discovery_data __rcu *fils_discovery;
1059 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp;
1060 struct s1g_short_beacon_data __rcu *s1g_short_beacon;
1061
1062 /* to be used after channel switch. */
1063 struct cfg80211_beacon_data *next_beacon;
1064 };
1065
1066 struct ieee80211_link_data {
1067 struct ieee80211_sub_if_data *sdata;
1068 unsigned int link_id;
1069
1070 /* multicast keys only */
1071 struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS +
1072 NUM_DEFAULT_MGMT_KEYS +
1073 NUM_DEFAULT_BEACON_KEYS];
1074 struct ieee80211_key __rcu *default_multicast_key;
1075 struct ieee80211_key __rcu *default_mgmt_key;
1076 struct ieee80211_key __rcu *default_beacon_key;
1077
1078
1079 bool operating_11g_mode;
1080
1081 struct {
1082 struct wiphy_work finalize_work;
1083 struct ieee80211_chan_req chanreq;
1084 } csa;
1085
1086 struct wiphy_work color_change_finalize_work;
1087 struct wiphy_delayed_work color_collision_detect_work;
1088 u64 color_bitmap;
1089
1090 /* context reservation -- protected with wiphy mutex */
1091 struct ieee80211_chanctx *reserved_chanctx;
1092 struct ieee80211_chan_req reserved;
1093 bool reserved_radar_required;
1094 bool reserved_ready;
1095
1096 u8 needed_rx_chains;
1097 enum ieee80211_smps_mode smps_mode;
1098
1099 int user_power_level; /* in dBm */
1100 int ap_power_level; /* in dBm */
1101
1102 bool radar_required;
1103 struct wiphy_hrtimer_work dfs_cac_timer_work;
1104
1105 union {
1106 struct ieee80211_link_data_managed mgd;
1107 struct ieee80211_link_data_ap ap;
1108 } u;
1109
1110 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
1111
1112 struct ieee80211_bss_conf *conf;
1113
1114 #ifdef CONFIG_MAC80211_DEBUGFS
1115 struct dentry *debugfs_dir;
1116 #endif
1117 };
1118
1119 struct ieee80211_sub_if_data {
1120 struct list_head list;
1121
1122 struct wireless_dev wdev;
1123
1124 /* keys */
1125 struct list_head key_list;
1126
1127 /* count for keys needing tailroom space allocation */
1128 int crypto_tx_tailroom_needed_cnt;
1129 int crypto_tx_tailroom_pending_dec;
1130 struct wiphy_delayed_work dec_tailroom_needed_wk;
1131
1132 struct net_device *dev;
1133 struct ieee80211_local *local;
1134
1135 unsigned int flags;
1136
1137 unsigned long state;
1138
1139 char name[IFNAMSIZ];
1140
1141 struct ieee80211_fragment_cache frags;
1142
1143 /* TID bitmap for NoAck policy */
1144 u16 noack_map;
1145
1146 /* bit field of ACM bits (BIT(802.1D tag)) */
1147 u8 wmm_acm;
1148
1149 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS];
1150 struct ieee80211_key __rcu *default_unicast_key;
1151
1152 u16 sequence_number;
1153 u16 mld_mcast_seq;
1154 __be16 control_port_protocol;
1155 bool control_port_no_encrypt;
1156 bool control_port_no_preauth;
1157 bool control_port_over_nl80211;
1158
1159 atomic_t num_tx_queued;
1160 struct mac80211_qos_map __rcu *qos_map;
1161
1162 struct wiphy_work work;
1163 struct sk_buff_head skb_queue;
1164 struct sk_buff_head status_queue;
1165
1166 /*
1167 * AP this belongs to: self in AP mode and
1168 * corresponding AP in VLAN mode, NULL for
1169 * all others (might be needed later in IBSS)
1170 */
1171 struct ieee80211_if_ap *bss;
1172
1173 /* bitmap of allowed (non-MCS) rate indexes for rate control */
1174 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
1175
1176 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
1177 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
1178
1179 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
1180 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
1181
1182 /* Beacon frame (non-MCS) rate (as a bitmap) */
1183 u32 beacon_rateidx_mask[NUM_NL80211_BANDS];
1184 bool beacon_rate_set;
1185
1186 union {
1187 struct ieee80211_if_ap ap;
1188 struct ieee80211_if_vlan vlan;
1189 struct ieee80211_if_managed mgd;
1190 struct ieee80211_if_ibss ibss;
1191 struct ieee80211_if_mesh mesh;
1192 struct ieee80211_if_ocb ocb;
1193 struct ieee80211_if_mntr mntr;
1194 struct ieee80211_if_nan nan;
1195 } u;
1196
1197 struct ieee80211_link_data deflink;
1198 struct ieee80211_link_data __rcu *link[IEEE80211_MLD_MAX_NUM_LINKS];
1199
1200 /* for ieee80211_set_active_links_async() */
1201 struct wiphy_work activate_links_work;
1202 u16 desired_active_links;
1203
1204 u16 restart_active_links;
1205
1206 #ifdef CONFIG_MAC80211_DEBUGFS
1207 struct {
1208 struct dentry *subdir_stations;
1209 struct dentry *default_unicast_key;
1210 struct dentry *default_multicast_key;
1211 struct dentry *default_mgmt_key;
1212 struct dentry *default_beacon_key;
1213 } debugfs;
1214 #endif
1215
1216 u32 tx_handlers_drop;
1217 /* must be last, dynamically sized area in this! */
1218 struct ieee80211_vif vif;
1219 };
1220
1221 static inline
vif_to_sdata(struct ieee80211_vif * p)1222 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
1223 {
1224 return container_of(p, struct ieee80211_sub_if_data, vif);
1225 }
1226
1227 #define sdata_dereference(p, sdata) \
1228 wiphy_dereference(sdata->local->hw.wiphy, p)
1229
1230 #define for_each_sdata_link(_local, _link) \
1231 /* outer loop just to define the variables ... */ \
1232 for (struct ieee80211_sub_if_data *___sdata = NULL; \
1233 !___sdata; \
1234 ___sdata = (void *)~0 /* always stop */) \
1235 for (int ___link_id = ARRAY_SIZE(___sdata->link); \
1236 ___link_id; ___link_id = 0 /* always stop */) \
1237 list_for_each_entry(___sdata, &(_local)->interfaces, list) \
1238 if (___link_id == ARRAY_SIZE(___sdata->link) && \
1239 ieee80211_sdata_running(___sdata)) \
1240 for (___link_id = 0; \
1241 ___link_id < ARRAY_SIZE(___sdata->link); \
1242 ___link_id++) \
1243 if ((_link = wiphy_dereference((_local)->hw.wiphy, \
1244 ___sdata->link[___link_id])))
1245
1246 /*
1247 * for_each_sdata_link_rcu() must be used under RCU read lock.
1248 */
1249 #define for_each_sdata_link_rcu(_local, _link) \
1250 /* outer loop just to define the variables ... */ \
1251 for (struct ieee80211_sub_if_data *___sdata = NULL; \
1252 !___sdata; \
1253 ___sdata = (void *)~0 /* always stop */) \
1254 for (int ___link_id = ARRAY_SIZE(___sdata->link); \
1255 ___link_id; ___link_id = 0 /* always stop */) \
1256 list_for_each_entry(___sdata, &(_local)->interfaces, list) \
1257 if (___link_id == ARRAY_SIZE(___sdata->link) && \
1258 ieee80211_sdata_running(___sdata)) \
1259 for (___link_id = 0; \
1260 ___link_id < ARRAY_SIZE((___sdata)->link); \
1261 ___link_id++) \
1262 if ((_link = rcu_dereference((___sdata)->link[___link_id])))
1263
1264 #define for_each_link_data(sdata, __link) \
1265 /* outer loop just to define the variable ... */ \
1266 for (struct ieee80211_sub_if_data *__sdata = (sdata); __sdata; \
1267 __sdata = NULL /* always stop */) \
1268 for (int __link_id = 0; \
1269 __link_id < ARRAY_SIZE((__sdata)->link); __link_id++) \
1270 if ((!(__sdata)->vif.valid_links || \
1271 (__sdata)->vif.valid_links & BIT(__link_id)) && \
1272 ((__link) = sdata_dereference((__sdata)->link[__link_id], \
1273 (__sdata))))
1274
1275 /*
1276 * for_each_link_data_rcu should be used under RCU read lock.
1277 */
1278 #define for_each_link_data_rcu(sdata, __link) \
1279 /* outer loop just to define the variable ... */ \
1280 for (struct ieee80211_sub_if_data *__sdata = (sdata); __sdata; \
1281 __sdata = NULL /* always stop */) \
1282 for (int __link_id = 0; \
1283 __link_id < ARRAY_SIZE((__sdata)->link); __link_id++) \
1284 if ((!(__sdata)->vif.valid_links || \
1285 (__sdata)->vif.valid_links & BIT(__link_id)) && \
1286 ((__link) = rcu_dereference((__sdata)->link[__link_id]))) \
1287
1288 static inline int
ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems * elems,struct cfg80211_rnr_elems * rnr_elems,u8 i)1289 ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems,
1290 struct cfg80211_rnr_elems *rnr_elems,
1291 u8 i)
1292 {
1293 int len = 0;
1294
1295 if (!elems || !elems->cnt || i > elems->cnt)
1296 return 0;
1297
1298 if (i < elems->cnt) {
1299 len = elems->elem[i].len;
1300 if (rnr_elems) {
1301 len += rnr_elems->elem[i].len;
1302 for (i = elems->cnt; i < rnr_elems->cnt; i++)
1303 len += rnr_elems->elem[i].len;
1304 }
1305 return len;
1306 }
1307
1308 /* i == elems->cnt, calculate total length of all MBSSID elements */
1309 for (i = 0; i < elems->cnt; i++)
1310 len += elems->elem[i].len;
1311
1312 if (rnr_elems) {
1313 for (i = 0; i < rnr_elems->cnt; i++)
1314 len += rnr_elems->elem[i].len;
1315 }
1316
1317 return len;
1318 }
1319
1320 enum {
1321 IEEE80211_RX_MSG = 1,
1322 IEEE80211_TX_STATUS_MSG = 2,
1323 };
1324
1325 enum queue_stop_reason {
1326 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1327 IEEE80211_QUEUE_STOP_REASON_PS,
1328 IEEE80211_QUEUE_STOP_REASON_CSA,
1329 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1330 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1331 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1332 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1333 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1334 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1335 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1336 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE,
1337
1338 IEEE80211_QUEUE_STOP_REASONS,
1339 };
1340
1341 #ifdef CONFIG_MAC80211_LEDS
1342 struct tpt_led_trigger {
1343 char name[32];
1344 const struct ieee80211_tpt_blink *blink_table;
1345 unsigned int blink_table_len;
1346 struct timer_list timer;
1347 struct ieee80211_local *local;
1348 unsigned long prev_traffic;
1349 unsigned long tx_bytes, rx_bytes;
1350 unsigned int active, want;
1351 bool running;
1352 };
1353 #endif
1354
1355 /**
1356 * enum mac80211_scan_flags - currently active scan mode
1357 *
1358 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1359 * well be on the operating channel
1360 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1361 * determine if we are on the operating channel or not
1362 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1363 * channel. This should not interrupt normal traffic.
1364 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1365 * that the scan completed.
1366 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1367 * a scan complete for an aborted scan.
1368 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1369 * cancelled.
1370 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR
1371 * and could send a probe request after receiving a beacon.
1372 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request
1373 */
1374 enum mac80211_scan_flags {
1375 SCAN_SW_SCANNING,
1376 SCAN_HW_SCANNING,
1377 SCAN_ONCHANNEL_SCANNING,
1378 SCAN_COMPLETED,
1379 SCAN_ABORTED,
1380 SCAN_HW_CANCELLED,
1381 SCAN_BEACON_WAIT,
1382 SCAN_BEACON_DONE,
1383 };
1384
1385 /**
1386 * enum mac80211_scan_state - scan state machine states
1387 *
1388 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1389 * determines if we should keep on scanning or switch back to the
1390 * operating channel
1391 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1392 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1393 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1394 * send out data
1395 * @SCAN_RESUME: Resume the scan and scan the next channel
1396 * @SCAN_ABORT: Abort the scan and go back to operating channel
1397 */
1398 enum mac80211_scan_state {
1399 SCAN_DECISION,
1400 SCAN_SET_CHANNEL,
1401 SCAN_SEND_PROBE,
1402 SCAN_SUSPEND,
1403 SCAN_RESUME,
1404 SCAN_ABORT,
1405 };
1406
1407 DECLARE_STATIC_KEY_FALSE(aql_disable);
1408
1409 struct ieee80211_local {
1410 /* embed the driver visible part.
1411 * don't cast (use the static inlines below), but we keep
1412 * it first anyway so they become a no-op */
1413 struct ieee80211_hw hw;
1414
1415 struct fq fq;
1416 struct codel_vars *cvars;
1417 struct codel_params cparams;
1418
1419 /* protects active_txqs and txqi->schedule_order */
1420 spinlock_t active_txq_lock[IEEE80211_NUM_ACS];
1421 struct list_head active_txqs[IEEE80211_NUM_ACS];
1422 u16 schedule_round[IEEE80211_NUM_ACS];
1423
1424 /* serializes ieee80211_handle_wake_tx_queue */
1425 spinlock_t handle_wake_tx_queue_lock;
1426
1427 u16 airtime_flags;
1428 u32 aql_txq_limit_low[IEEE80211_NUM_ACS];
1429 u32 aql_txq_limit_high[IEEE80211_NUM_ACS];
1430 u32 aql_threshold;
1431 atomic_t aql_total_pending_airtime;
1432 atomic_t aql_ac_pending_airtime[IEEE80211_NUM_ACS];
1433
1434 const struct ieee80211_ops *ops;
1435
1436 /*
1437 * private workqueue to mac80211. mac80211 makes this accessible
1438 * via ieee80211_queue_work()
1439 */
1440 struct workqueue_struct *workqueue;
1441
1442 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1443 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1444 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1445 spinlock_t queue_stop_reason_lock;
1446
1447 int open_count;
1448 int monitors, virt_monitors, tx_mntrs;
1449 /* number of interfaces with corresponding FIF_ flags */
1450 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1451 fif_probe_req;
1452 bool probe_req_reg;
1453 bool rx_mcast_action_reg;
1454 unsigned int filter_flags; /* FIF_* */
1455
1456 struct cfg80211_chan_def dflt_chandef;
1457 bool emulate_chanctx;
1458
1459 /* protects the aggregated multicast list and filter calls */
1460 spinlock_t filter_lock;
1461
1462 /* used for uploading changed mc list */
1463 struct wiphy_work reconfig_filter;
1464
1465 /* aggregated multicast list */
1466 struct netdev_hw_addr_list mc_list;
1467
1468 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1469
1470 /*
1471 * suspended is true if we finished all the suspend _and_ we have
1472 * not yet come up from resume. This is to be used by mac80211
1473 * to ensure driver sanity during suspend and mac80211's own
1474 * sanity. It can eventually be used for WoW as well.
1475 */
1476 bool suspended;
1477
1478 /* suspending is true during the whole suspend process */
1479 bool suspending;
1480
1481 /*
1482 * Resuming is true while suspended, but when we're reprogramming the
1483 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1484 * again even though some other parts of the stack are still suspended
1485 * and we still drop received frames to avoid waking the stack.
1486 */
1487 bool resuming;
1488
1489 /*
1490 * quiescing is true during the suspend process _only_ to
1491 * ease timer cancelling etc.
1492 */
1493 bool quiescing;
1494
1495 /* device is started */
1496 bool started;
1497
1498 /* device is during a HW reconfig */
1499 bool in_reconfig;
1500
1501 /* reconfiguration failed ... suppress some warnings etc. */
1502 bool reconfig_failure;
1503
1504 /* wowlan is enabled -- don't reconfig on resume */
1505 bool wowlan;
1506
1507 struct wiphy_work radar_detected_work;
1508
1509 /* number of RX chains the hardware has */
1510 u8 rx_chains;
1511
1512 /* bitmap of which sbands were copied */
1513 u8 sband_allocated;
1514
1515 int tx_headroom; /* required headroom for hardware/radiotap */
1516
1517 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1518 * added to skb_queue will be processed, but frames in
1519 * skb_queue_unreliable may be dropped if the total length of these
1520 * queues increases over the limit. */
1521 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1522 struct tasklet_struct tasklet;
1523 struct sk_buff_head skb_queue;
1524 struct sk_buff_head skb_queue_unreliable;
1525
1526 spinlock_t rx_path_lock;
1527
1528 /* Station data */
1529 /*
1530 * The list, hash table and counter are protected
1531 * by the wiphy mutex, reads are done with RCU.
1532 */
1533 spinlock_t tim_lock;
1534 unsigned long num_sta;
1535 struct list_head sta_list;
1536 struct rhltable sta_hash;
1537 struct rhltable link_sta_hash;
1538 struct timer_list sta_cleanup;
1539 int sta_generation;
1540
1541 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1542 struct tasklet_struct tx_pending_tasklet;
1543 struct tasklet_struct wake_txqs_tasklet;
1544
1545 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1546
1547 /* number of interfaces with allmulti RX */
1548 atomic_t iff_allmultis;
1549
1550 struct rate_control_ref *rate_ctrl;
1551
1552 struct arc4_ctx wep_tx_ctx;
1553 struct arc4_ctx wep_rx_ctx;
1554 u32 wep_iv;
1555
1556 /* see iface.c */
1557 struct list_head interfaces;
1558 struct list_head mon_list; /* only that are IFF_UP */
1559 struct mutex iflist_mtx;
1560
1561 /* Scanning and BSS list */
1562 unsigned long scanning;
1563 struct cfg80211_ssid scan_ssid;
1564 struct cfg80211_scan_request *int_scan_req;
1565 struct cfg80211_scan_request __rcu *scan_req;
1566 struct ieee80211_scan_request *hw_scan_req;
1567 struct cfg80211_chan_def scan_chandef;
1568 enum nl80211_band hw_scan_band;
1569 int scan_channel_idx;
1570 int scan_ies_len;
1571 int hw_scan_ies_bufsize;
1572 struct cfg80211_scan_info scan_info;
1573
1574 struct wiphy_work sched_scan_stopped_work;
1575 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1576 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1577 u8 scan_addr[ETH_ALEN];
1578
1579 unsigned long leave_oper_channel_time;
1580 enum mac80211_scan_state next_scan_state;
1581 struct wiphy_delayed_work scan_work;
1582 struct ieee80211_sub_if_data __rcu *scan_sdata;
1583
1584 /* Temporary remain-on-channel for off-channel operations */
1585 struct ieee80211_channel *tmp_channel;
1586
1587 /* channel contexts */
1588 struct list_head chanctx_list;
1589
1590 #ifdef CONFIG_MAC80211_LEDS
1591 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1592 struct led_trigger tpt_led;
1593 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1594 atomic_t radio_led_active, tpt_led_active;
1595 struct tpt_led_trigger *tpt_led_trigger;
1596 #endif
1597
1598 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1599 /* SNMP counters */
1600 /* dot11CountersTable */
1601 u32 dot11TransmittedFragmentCount;
1602 u32 dot11MulticastTransmittedFrameCount;
1603 u32 dot11FailedCount;
1604 u32 dot11RetryCount;
1605 u32 dot11MultipleRetryCount;
1606 u32 dot11FrameDuplicateCount;
1607 u32 dot11ReceivedFragmentCount;
1608 u32 dot11MulticastReceivedFrameCount;
1609 u32 dot11TransmittedFrameCount;
1610
1611 /* TX/RX handler statistics */
1612 unsigned int tx_handlers_queued;
1613 unsigned int tx_handlers_drop_wep;
1614 unsigned int tx_handlers_drop_not_assoc;
1615 unsigned int tx_handlers_drop_unauth_port;
1616 unsigned int rx_handlers_drop;
1617 unsigned int rx_handlers_queued;
1618 unsigned int rx_handlers_drop_nullfunc;
1619 unsigned int rx_handlers_drop_defrag;
1620 unsigned int tx_expand_skb_head;
1621 unsigned int tx_expand_skb_head_cloned;
1622 unsigned int rx_expand_skb_head_defrag;
1623 unsigned int rx_handlers_fragments;
1624 unsigned int tx_status_drop;
1625 #define I802_DEBUG_INC(c) (c)++
1626 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1627 #define I802_DEBUG_INC(c) do { } while (0)
1628 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1629
1630
1631 int total_ps_buffered; /* total number of all buffered unicast and
1632 * multicast packets for power saving stations
1633 */
1634
1635 bool pspolling;
1636 /*
1637 * PS can only be enabled when we have exactly one managed
1638 * interface (and monitors) in PS, this then points there.
1639 */
1640 struct ieee80211_sub_if_data *ps_sdata;
1641 struct wiphy_work dynamic_ps_enable_work;
1642 struct wiphy_work dynamic_ps_disable_work;
1643 struct timer_list dynamic_ps_timer;
1644 struct notifier_block ifa_notifier;
1645 struct notifier_block ifa6_notifier;
1646
1647 /*
1648 * The dynamic ps timeout configured from user space via WEXT -
1649 * this will override whatever chosen by mac80211 internally.
1650 */
1651 int dynamic_ps_forced_timeout;
1652
1653 int user_power_level; /* in dBm, for all interfaces */
1654
1655 struct work_struct restart_work;
1656
1657 #ifdef CONFIG_MAC80211_DEBUGFS
1658 struct local_debugfsdentries {
1659 struct dentry *rcdir;
1660 struct dentry *keys;
1661 } debugfs;
1662 bool force_tx_status;
1663 #endif
1664
1665 /*
1666 * Remain-on-channel support
1667 */
1668 struct wiphy_delayed_work roc_work;
1669 struct list_head roc_list;
1670 struct wiphy_work hw_roc_start, hw_roc_done;
1671 unsigned long hw_roc_start_time;
1672 u64 roc_cookie_counter;
1673
1674 struct idr ack_status_frames;
1675 spinlock_t ack_status_lock;
1676
1677 /* virtual monitor interface */
1678 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1679 struct ieee80211_chan_req monitor_chanreq;
1680
1681 /* extended capabilities provided by mac80211 */
1682 u8 ext_capa[8];
1683
1684 bool wbrf_supported;
1685 };
1686
1687 static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(const struct net_device * dev)1688 IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev)
1689 {
1690 return netdev_priv(dev);
1691 }
1692
1693 static inline struct ieee80211_sub_if_data *
IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev * wdev)1694 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1695 {
1696 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1697 }
1698
1699 static inline struct ieee80211_supported_band *
ieee80211_get_sband(struct ieee80211_sub_if_data * sdata)1700 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1701 {
1702 struct ieee80211_local *local = sdata->local;
1703 struct ieee80211_chanctx_conf *chanctx_conf;
1704 enum nl80211_band band;
1705
1706 WARN_ON(ieee80211_vif_is_mld(&sdata->vif));
1707
1708 rcu_read_lock();
1709 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
1710
1711 if (!chanctx_conf) {
1712 rcu_read_unlock();
1713 return NULL;
1714 }
1715
1716 band = chanctx_conf->def.chan->band;
1717 rcu_read_unlock();
1718
1719 return local->hw.wiphy->bands[band];
1720 }
1721
1722 static inline struct ieee80211_supported_band *
ieee80211_get_link_sband(struct ieee80211_link_data * link)1723 ieee80211_get_link_sband(struct ieee80211_link_data *link)
1724 {
1725 struct ieee80211_local *local = link->sdata->local;
1726 struct ieee80211_chanctx_conf *chanctx_conf;
1727 enum nl80211_band band;
1728
1729 rcu_read_lock();
1730 chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
1731 if (!chanctx_conf) {
1732 rcu_read_unlock();
1733 return NULL;
1734 }
1735
1736 band = chanctx_conf->def.chan->band;
1737 rcu_read_unlock();
1738
1739 return local->hw.wiphy->bands[band];
1740 }
1741
1742 /* this struct holds the value parsing from channel switch IE */
1743 struct ieee80211_csa_ie {
1744 struct ieee80211_chan_req chanreq;
1745 u8 mode;
1746 u8 count;
1747 u8 ttl;
1748 u16 pre_value;
1749 u16 reason_code;
1750 u32 max_switch_time;
1751 };
1752
1753 enum ieee80211_elems_parse_error {
1754 IEEE80211_PARSE_ERR_INVALID_END = BIT(0),
1755 IEEE80211_PARSE_ERR_DUP_ELEM = BIT(1),
1756 IEEE80211_PARSE_ERR_BAD_ELEM_SIZE = BIT(2),
1757 IEEE80211_PARSE_ERR_UNEXPECTED_ELEM = BIT(3),
1758 IEEE80211_PARSE_ERR_DUP_NEST_ML_BASIC = BIT(4),
1759 };
1760
1761 /* Parsed Information Elements */
1762 struct ieee802_11_elems {
1763 const u8 *ie_start;
1764 size_t total_len;
1765 u32 crc;
1766
1767 /* pointers to IEs */
1768 const struct ieee80211_tdls_lnkie *lnk_id;
1769 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1770 const u8 *ext_capab;
1771 const u8 *ssid;
1772 const u8 *supp_rates;
1773 const u8 *ds_params;
1774 const struct ieee80211_tim_ie *tim;
1775 const u8 *rsn;
1776 const u8 *rsnx;
1777 const u8 *erp_info;
1778 const u8 *ext_supp_rates;
1779 const u8 *wmm_info;
1780 const u8 *wmm_param;
1781 const struct ieee80211_ht_cap *ht_cap_elem;
1782 const struct ieee80211_ht_operation *ht_operation;
1783 const struct ieee80211_vht_cap *vht_cap_elem;
1784 const struct ieee80211_vht_operation *vht_operation;
1785 const struct ieee80211_meshconf_ie *mesh_config;
1786 const u8 *he_cap;
1787 const struct ieee80211_he_operation *he_operation;
1788 const struct ieee80211_he_spr *he_spr;
1789 const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1790 const struct ieee80211_he_6ghz_capa *he_6ghz_capa;
1791 const u8 *uora_element;
1792 const u8 *mesh_id;
1793 const u8 *peering;
1794 const __le16 *awake_window;
1795 const u8 *preq;
1796 const u8 *prep;
1797 const u8 *perr;
1798 const struct ieee80211_rann_ie *rann;
1799 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1800 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1801 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1802 const u8 *max_channel_switch_time;
1803 const u8 *country_elem;
1804 const u8 *pwr_constr_elem;
1805 const u8 *cisco_dtpc_elem;
1806 const struct ieee80211_timeout_interval_ie *timeout_int;
1807 const u8 *opmode_notif;
1808 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1809 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1810 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1811 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
1812 const struct ieee80211_bssid_index *bssid_index;
1813 u8 max_bssid_indicator;
1814 u8 dtim_count;
1815 u8 dtim_period;
1816 const struct ieee80211_addba_ext_ie *addba_ext_ie;
1817 const struct ieee80211_s1g_cap *s1g_capab;
1818 const struct ieee80211_s1g_oper_ie *s1g_oper;
1819 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat;
1820 const struct ieee80211_aid_response_ie *aid_resp;
1821 const struct ieee80211_eht_cap_elem *eht_cap;
1822 const struct ieee80211_eht_operation *eht_operation;
1823 const struct ieee80211_multi_link_elem *ml_basic;
1824 const struct ieee80211_multi_link_elem *ml_reconf;
1825 const struct ieee80211_multi_link_elem *ml_epcs;
1826 const struct ieee80211_bandwidth_indication *bandwidth_indication;
1827 const struct ieee80211_ttlm_elem *ttlm[IEEE80211_TTLM_MAX_CNT];
1828 const struct ieee80211_uhr_cap *uhr_cap;
1829 const struct ieee80211_uhr_operation *uhr_operation;
1830
1831 /* not the order in the psd values is per element, not per chandef */
1832 struct ieee80211_parsed_tpe tpe;
1833 struct ieee80211_parsed_tpe csa_tpe;
1834
1835 /* length of them, respectively */
1836 u8 ext_capab_len;
1837 u8 ssid_len;
1838 u8 supp_rates_len;
1839 u8 tim_len;
1840 u8 rsn_len;
1841 u8 rsnx_len;
1842 u8 ext_supp_rates_len;
1843 u8 wmm_info_len;
1844 u8 wmm_param_len;
1845 u8 he_cap_len;
1846 u8 mesh_id_len;
1847 u8 peering_len;
1848 u8 preq_len;
1849 u8 prep_len;
1850 u8 perr_len;
1851 u8 country_elem_len;
1852 u8 bssid_index_len;
1853 u8 eht_cap_len;
1854 u8 uhr_cap_len;
1855 u8 uhr_operation_len;
1856
1857 /* mult-link element can be de-fragmented and thus u8 is not sufficient */
1858 size_t ml_basic_len;
1859 size_t ml_reconf_len;
1860 size_t ml_epcs_len;
1861
1862 u8 ttlm_num;
1863
1864 /*
1865 * store the per station profile pointer and length in case that the
1866 * parsing also handled Multi-Link element parsing for a specific link
1867 * ID.
1868 */
1869 struct ieee80211_mle_per_sta_profile *prof;
1870 size_t sta_prof_len;
1871
1872 /* whether/which parse error occurred while retrieving these elements */
1873 u8 parse_error;
1874 };
1875
hw_to_local(struct ieee80211_hw * hw)1876 static inline struct ieee80211_local *hw_to_local(
1877 struct ieee80211_hw *hw)
1878 {
1879 return container_of(hw, struct ieee80211_local, hw);
1880 }
1881
to_txq_info(struct ieee80211_txq * txq)1882 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1883 {
1884 return container_of(txq, struct txq_info, txq);
1885 }
1886
txq_has_queue(struct ieee80211_txq * txq)1887 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1888 {
1889 struct txq_info *txqi = to_txq_info(txq);
1890
1891 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1892 }
1893
1894 static inline bool
ieee80211_have_rx_timestamp(struct ieee80211_rx_status * status)1895 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1896 {
1897 return status->flag & RX_FLAG_MACTIME;
1898 }
1899
1900 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1901 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1902
1903 void ieee80211_vif_block_queues_csa(struct ieee80211_sub_if_data *sdata);
1904 void ieee80211_vif_unblock_queues_csa(struct ieee80211_sub_if_data *sdata);
1905
1906 /* This function returns the number of multicast stations connected to this
1907 * interface. It returns -1 if that number is not tracked, that is for netdevs
1908 * not in AP or AP_VLAN mode or when using 4addr.
1909 */
1910 static inline int
ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data * sdata)1911 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1912 {
1913 if (sdata->vif.type == NL80211_IFTYPE_AP)
1914 return atomic_read(&sdata->u.ap.num_mcast_sta);
1915 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1916 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1917 return -1;
1918 }
1919
1920 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1921 struct ieee80211_rx_status *status,
1922 unsigned int mpdu_len,
1923 unsigned int mpdu_offset);
1924 int ieee80211_hw_config(struct ieee80211_local *local, int radio_idx,
1925 u32 changed);
1926 int ieee80211_hw_conf_chan(struct ieee80211_local *local);
1927 void ieee80211_hw_conf_init(struct ieee80211_local *local);
1928 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1929 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1930 u64 changed);
1931 void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata,
1932 u64 changed);
1933 void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata,
1934 struct ieee80211_link_data *link,
1935 u64 changed);
1936 void ieee80211_configure_filter(struct ieee80211_local *local);
1937 u64 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1938
1939 void ieee80211_handle_queued_frames(struct ieee80211_local *local);
1940
1941 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1942 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1943 u64 *cookie, gfp_t gfp);
1944
1945 void ieee80211_check_fast_rx(struct sta_info *sta);
1946 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1947 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1948 void ieee80211_clear_fast_rx(struct sta_info *sta);
1949
1950 bool ieee80211_is_our_addr(struct ieee80211_sub_if_data *sdata,
1951 const u8 *addr, int *out_link_id);
1952
1953 /* STA code */
1954 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1955 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1956 struct cfg80211_auth_request *req);
1957 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1958 struct cfg80211_assoc_request *req);
1959 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1960 struct cfg80211_deauth_request *req);
1961 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1962 struct cfg80211_disassoc_request *req);
1963 void ieee80211_send_pspoll(struct ieee80211_local *local,
1964 struct ieee80211_sub_if_data *sdata);
1965 void ieee80211_recalc_ps(struct ieee80211_local *local);
1966 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1967 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1968 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1969 struct sk_buff *skb);
1970 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
1971 struct sk_buff *skb);
1972 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1973 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1974 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1975 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1976 __le16 fc, bool acked);
1977 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1978 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1979 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1980 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
1981 u8 reason, bool tx);
1982 void ieee80211_mgd_setup_link(struct ieee80211_link_data *link);
1983 void ieee80211_mgd_stop_link(struct ieee80211_link_data *link);
1984 void ieee80211_mgd_set_link_qos_params(struct ieee80211_link_data *link);
1985
1986 /* IBSS code */
1987 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1988 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1989 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1990 const u8 *bssid, const u8 *addr, u32 supp_rates);
1991 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1992 struct cfg80211_ibss_params *params);
1993 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1994 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1995 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1996 struct sk_buff *skb);
1997 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1998 struct cfg80211_csa_settings *csa_settings,
1999 u64 *changed);
2000 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata,
2001 u64 *changed);
2002 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
2003
2004 /* OCB code */
2005 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
2006 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
2007 const u8 *bssid, const u8 *addr, u32 supp_rates);
2008 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
2009 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
2010 struct ocb_setup *setup);
2011 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
2012
2013 /* mesh code */
2014 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
2015 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
2016 struct sk_buff *skb);
2017 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
2018 struct cfg80211_csa_settings *csa_settings,
2019 u64 *changed);
2020 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata,
2021 u64 *changed);
2022
2023 /* scan/BSS handling */
2024 void ieee80211_scan_work(struct wiphy *wiphy, struct wiphy_work *work);
2025 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
2026 const u8 *ssid, u8 ssid_len,
2027 struct ieee80211_channel **channels,
2028 unsigned int n_channels);
2029 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
2030 struct cfg80211_scan_request *req);
2031 void ieee80211_scan_cancel(struct ieee80211_local *local);
2032 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
2033 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
2034
2035 void ieee80211_inform_bss(struct wiphy *wiphy, struct cfg80211_bss *bss,
2036 const struct cfg80211_bss_ies *ies, void *data);
2037
2038 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
2039 struct ieee80211_bss *
2040 ieee80211_bss_info_update(struct ieee80211_local *local,
2041 struct ieee80211_rx_status *rx_status,
2042 struct ieee80211_mgmt *mgmt,
2043 size_t len,
2044 struct ieee80211_channel *channel);
2045 void ieee80211_rx_bss_put(struct ieee80211_local *local,
2046 struct ieee80211_bss *bss);
2047
2048 /* scheduled scan handling */
2049 int
2050 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
2051 struct cfg80211_sched_scan_request *req);
2052 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
2053 struct cfg80211_sched_scan_request *req);
2054 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
2055 void ieee80211_sched_scan_end(struct ieee80211_local *local);
2056 void ieee80211_sched_scan_stopped_work(struct wiphy *wiphy,
2057 struct wiphy_work *work);
2058
2059 /* off-channel/mgmt-tx */
2060 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
2061 void ieee80211_offchannel_return(struct ieee80211_local *local);
2062 void ieee80211_roc_setup(struct ieee80211_local *local);
2063 void ieee80211_start_next_roc(struct ieee80211_local *local);
2064 void ieee80211_reconfig_roc(struct ieee80211_local *local);
2065 void ieee80211_roc_purge(struct ieee80211_local *local,
2066 struct ieee80211_sub_if_data *sdata);
2067 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
2068 struct ieee80211_channel *chan,
2069 unsigned int duration, u64 *cookie);
2070 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2071 struct wireless_dev *wdev, u64 cookie);
2072 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
2073 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
2074 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2075 struct wireless_dev *wdev, u64 cookie);
2076
2077 /* channel switch handling */
2078 void ieee80211_csa_finalize_work(struct wiphy *wiphy, struct wiphy_work *work);
2079 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2080 struct cfg80211_csa_settings *params);
2081
2082 /* color change handling */
2083 void ieee80211_color_change_finalize_work(struct wiphy *wiphy,
2084 struct wiphy_work *work);
2085 void ieee80211_color_collision_detection_work(struct wiphy *wiphy,
2086 struct wiphy_work *work);
2087
2088 /* interface handling */
2089 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
2090 NETIF_F_HW_CSUM | NETIF_F_SG | \
2091 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE | \
2092 NETIF_F_HW_TC)
2093 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM)
2094 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \
2095 MAC80211_SUPPORTED_FEATURES_RX)
2096
2097 int ieee80211_iface_init(void);
2098 void ieee80211_iface_exit(void);
2099 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
2100 unsigned char name_assign_type,
2101 struct wireless_dev **new_wdev, enum nl80211_iftype type,
2102 struct vif_params *params);
2103 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
2104 enum nl80211_iftype type);
2105 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
2106 void ieee80211_remove_interfaces(struct ieee80211_local *local);
2107 u32 ieee80211_idle_off(struct ieee80211_local *local);
2108 void ieee80211_recalc_idle(struct ieee80211_local *local);
2109 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
2110 const int offset);
2111 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
2112 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
2113 int ieee80211_add_virtual_monitor(struct ieee80211_local *local,
2114 struct ieee80211_sub_if_data *creator_sdata);
2115 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
2116
2117 bool __ieee80211_recalc_txpower(struct ieee80211_link_data *link);
2118 void ieee80211_recalc_txpower(struct ieee80211_link_data *link,
2119 bool update_bss);
2120 void ieee80211_recalc_offload(struct ieee80211_local *local);
2121
ieee80211_sdata_running(struct ieee80211_sub_if_data * sdata)2122 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
2123 {
2124 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
2125 }
2126
2127 /* link handling */
2128 void ieee80211_link_setup(struct ieee80211_link_data *link);
2129 void ieee80211_link_init(struct ieee80211_sub_if_data *sdata,
2130 int link_id,
2131 struct ieee80211_link_data *link,
2132 struct ieee80211_bss_conf *link_conf);
2133 void ieee80211_link_stop(struct ieee80211_link_data *link);
2134 int ieee80211_vif_set_links(struct ieee80211_sub_if_data *sdata,
2135 u16 new_links, u16 dormant_links);
ieee80211_vif_clear_links(struct ieee80211_sub_if_data * sdata)2136 static inline void ieee80211_vif_clear_links(struct ieee80211_sub_if_data *sdata)
2137 {
2138 ieee80211_vif_set_links(sdata, 0, 0);
2139 }
2140
2141 void ieee80211_apvlan_link_setup(struct ieee80211_sub_if_data *sdata);
2142 void ieee80211_apvlan_link_clear(struct ieee80211_sub_if_data *sdata);
2143
2144 /* tx handling */
2145 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
2146 void ieee80211_tx_pending(struct tasklet_struct *t);
2147 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
2148 struct net_device *dev);
2149 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
2150 struct net_device *dev);
2151 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb,
2152 struct net_device *dev);
2153 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
2154 struct net_device *dev,
2155 u32 info_flags,
2156 u32 ctrl_flags,
2157 u64 *cookie);
2158 struct sk_buff *
2159 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
2160 struct sk_buff *skb, u32 info_flags);
2161 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
2162 int retry_count, struct ieee80211_tx_status *status);
2163
2164 void ieee80211_check_fast_xmit(struct sta_info *sta);
2165 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
2166 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
2167 void ieee80211_clear_fast_xmit(struct sta_info *sta);
2168 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
2169 const u8 *buf, size_t len,
2170 const u8 *dest, __be16 proto, bool unencrypted,
2171 int link_id, u64 *cookie);
2172 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
2173 const u8 *buf, size_t len);
2174 void __ieee80211_xmit_fast(struct ieee80211_sub_if_data *sdata,
2175 struct sta_info *sta,
2176 struct ieee80211_fast_tx *fast_tx,
2177 struct sk_buff *skb, bool ampdu,
2178 const u8 *da, const u8 *sa);
2179 void ieee80211_aggr_check(struct ieee80211_sub_if_data *sdata,
2180 struct sta_info *sta, struct sk_buff *skb);
2181
2182 /* HT */
2183 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
2184 struct ieee80211_sta_ht_cap *ht_cap);
2185 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
2186 struct ieee80211_supported_band *sband,
2187 const struct ieee80211_ht_cap *ht_cap_ie,
2188 struct link_sta_info *link_sta);
2189 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
2190 const u8 *da, u16 tid,
2191 u16 initiator, u16 reason_code);
2192 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
2193 enum ieee80211_smps_mode smps, const u8 *da,
2194 const u8 *bssid, int link_id);
2195 void ieee80211_add_addbaext(struct sk_buff *skb,
2196 const u8 req_addba_ext_data,
2197 u16 buf_size);
2198 u8 ieee80211_retrieve_addba_ext_data(struct sta_info *sta,
2199 const void *elem_data, ssize_t elem_len,
2200 u16 *buf_size);
2201 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
2202 u16 initiator, u16 reason, bool stop);
2203 void __ieee80211_start_rx_ba_session(struct sta_info *sta,
2204 u8 dialog_token, u16 timeout,
2205 u16 start_seq_num, u16 ba_policy, u16 tid,
2206 u16 buf_size, bool tx, bool auto_seq,
2207 const u8 addba_ext_data);
2208 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
2209 enum ieee80211_agg_stop_reason reason);
2210 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
2211 struct sta_info *sta,
2212 struct ieee80211_mgmt *mgmt, size_t len);
2213 void ieee80211_process_addba_resp(struct ieee80211_local *local,
2214 struct sta_info *sta,
2215 struct ieee80211_mgmt *mgmt,
2216 size_t len);
2217 void ieee80211_process_addba_request(struct ieee80211_local *local,
2218 struct sta_info *sta,
2219 struct ieee80211_mgmt *mgmt,
2220 size_t len);
2221
2222 static inline struct ieee80211_mgmt *
ieee80211_mgmt_ba(struct sk_buff * skb,const u8 * da,struct ieee80211_sub_if_data * sdata)2223 ieee80211_mgmt_ba(struct sk_buff *skb, const u8 *da,
2224 struct ieee80211_sub_if_data *sdata)
2225 {
2226 struct ieee80211_mgmt *mgmt = skb_put_zero(skb, 24);
2227
2228 ether_addr_copy(mgmt->da, da);
2229 ether_addr_copy(mgmt->sa, sdata->vif.addr);
2230
2231 if (sdata->vif.type == NL80211_IFTYPE_AP ||
2232 sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
2233 sdata->vif.type == NL80211_IFTYPE_MESH_POINT)
2234 ether_addr_copy(mgmt->bssid, sdata->vif.addr);
2235 else if (sdata->vif.type == NL80211_IFTYPE_STATION)
2236 ether_addr_copy(mgmt->bssid, sdata->vif.cfg.ap_addr);
2237 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
2238 ether_addr_copy(mgmt->bssid, sdata->u.ibss.bssid);
2239
2240 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2241 IEEE80211_STYPE_ACTION);
2242 return mgmt;
2243 }
2244
2245 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2246 enum ieee80211_agg_stop_reason reason);
2247 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
2248 struct tid_ampdu_tx *tid_tx);
2249 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
2250 struct tid_ampdu_tx *tid_tx);
2251 void ieee80211_ba_session_work(struct wiphy *wiphy, struct wiphy_work *work);
2252 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
2253 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
2254
2255 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
2256 enum nl80211_smps_mode
2257 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
2258
2259 void ieee80211_ht_handle_chanwidth_notif(struct ieee80211_local *local,
2260 struct ieee80211_sub_if_data *sdata,
2261 struct sta_info *sta,
2262 struct link_sta_info *link_sta,
2263 u8 chanwidth, enum nl80211_band band);
2264
2265 /* VHT */
2266 void
2267 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
2268 struct ieee80211_supported_band *sband,
2269 const struct ieee80211_vht_cap *vht_cap_ie,
2270 const struct ieee80211_vht_cap *vht_cap_ie2,
2271 struct link_sta_info *link_sta);
2272 enum ieee80211_sta_rx_bandwidth
2273 _ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta,
2274 struct cfg80211_chan_def *chandef);
2275 static inline enum ieee80211_sta_rx_bandwidth
ieee80211_sta_cap_rx_bw(struct link_sta_info * link_sta)2276 ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta)
2277 {
2278 return _ieee80211_sta_cap_rx_bw(link_sta, NULL);
2279 }
2280 enum ieee80211_sta_rx_bandwidth
2281 _ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta,
2282 struct cfg80211_chan_def *chandef);
2283 static inline enum ieee80211_sta_rx_bandwidth
ieee80211_sta_cur_vht_bw(struct link_sta_info * link_sta)2284 ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta)
2285 {
2286 return _ieee80211_sta_cur_vht_bw(link_sta, NULL);
2287 }
2288 void ieee80211_sta_init_nss(struct link_sta_info *link_sta);
2289 enum nl80211_chan_width
2290 ieee80211_sta_cap_chan_bw(struct link_sta_info *link_sta);
2291 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
2292 struct ieee80211_link_data *link,
2293 struct ieee80211_mgmt *mgmt);
2294 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2295 struct link_sta_info *sta,
2296 u8 opmode, enum nl80211_band band);
2297 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2298 struct link_sta_info *sta,
2299 u8 opmode, enum nl80211_band band);
2300 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
2301 struct ieee80211_sta_vht_cap *vht_cap);
2302 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
2303 u16 vht_mask[NL80211_VHT_NSS_MAX]);
2304 enum nl80211_chan_width
2305 ieee80211_sta_rx_bw_to_chan_width(struct link_sta_info *sta);
2306
2307 /* HE */
2308 void
2309 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
2310 struct ieee80211_supported_band *sband,
2311 const u8 *he_cap_ie, u8 he_cap_len,
2312 const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
2313 struct link_sta_info *link_sta);
2314 void
2315 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
2316 const struct ieee80211_he_spr *he_spr_ie_elem);
2317
2318 void
2319 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
2320 const struct ieee80211_he_operation *he_op_ie_elem);
2321
2322 /* S1G */
2323 void ieee80211_s1g_sta_rate_init(struct sta_info *sta);
2324 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb);
2325 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata,
2326 struct sk_buff *skb);
2327 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata,
2328 struct sk_buff *skb);
2329 void ieee80211_s1g_cap_to_sta_s1g_cap(struct ieee80211_sub_if_data *sdata,
2330 const struct ieee80211_s1g_cap *s1g_cap_ie,
2331 struct link_sta_info *link_sta);
2332
2333 /* Spectrum management */
2334 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
2335 struct ieee80211_mgmt *mgmt,
2336 size_t len);
2337 /**
2338 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
2339 * @sdata: the sdata of the interface which has received the frame
2340 * @elems: parsed 802.11 elements received with the frame
2341 * @current_band: indicates the current band
2342 * @vht_cap_info: VHT capabilities of the transmitter
2343 * @conn: contains information about own capabilities and restrictions
2344 * to decide which channel switch announcements can be accepted
2345 * @bssid: the currently connected bssid (for reporting)
2346 * @unprot_action: whether the frame was an unprotected frame or not,
2347 * used for reporting
2348 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
2349 * All of them will be filled with if success only.
2350 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
2351 */
2352 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
2353 struct ieee802_11_elems *elems,
2354 enum nl80211_band current_band,
2355 u32 vht_cap_info,
2356 struct ieee80211_conn_settings *conn,
2357 u8 *bssid, bool unprot_action,
2358 struct ieee80211_csa_ie *csa_ie);
2359
2360 /* Suspend/resume and hw reconfiguration */
2361 int ieee80211_reconfig(struct ieee80211_local *local);
2362 void ieee80211_stop_device(struct ieee80211_local *local, bool suspend);
2363
2364 int __ieee80211_suspend(struct ieee80211_hw *hw,
2365 struct cfg80211_wowlan *wowlan);
2366
__ieee80211_resume(struct ieee80211_hw * hw)2367 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
2368 {
2369 struct ieee80211_local *local = hw_to_local(hw);
2370
2371 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
2372 !test_bit(SCAN_COMPLETED, &local->scanning),
2373 "%s: resume with hardware scan still in progress\n",
2374 wiphy_name(hw->wiphy));
2375
2376 return ieee80211_reconfig(hw_to_local(hw));
2377 }
2378
2379 /* utility functions/constants */
2380 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
2381 const char *ieee80211_conn_mode_str(enum ieee80211_conn_mode mode);
2382 enum ieee80211_conn_bw_limit
2383 ieee80211_min_bw_limit_from_chandef(struct cfg80211_chan_def *chandef);
2384 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
2385 int rate, int erp, int short_preamble);
2386 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
2387 struct ieee80211_tx_queue_params *qparam,
2388 int ac);
2389 void ieee80211_clear_tpe(struct ieee80211_parsed_tpe *tpe);
2390 void ieee80211_set_wmm_default(struct ieee80211_link_data *link,
2391 bool bss_notify, bool enable_qos);
2392 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
2393 struct sta_info *sta, struct sk_buff *skb);
2394
2395 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2396 struct sk_buff *skb, int tid, int link_id,
2397 enum nl80211_band band);
2398
ieee80211_require_encrypted_assoc(__le16 fc,struct sta_info * sta)2399 static inline bool ieee80211_require_encrypted_assoc(__le16 fc,
2400 struct sta_info *sta)
2401 {
2402 return (sta && sta->sta.epp_peer &&
2403 (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc) ||
2404 ieee80211_is_assoc_resp(fc) || ieee80211_is_reassoc_resp(fc)));
2405 }
2406
2407 /* sta_out needs to be checked for ERR_PTR() before using */
2408 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata,
2409 struct sk_buff *skb,
2410 struct sta_info **sta_out);
2411
2412 static inline void
ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid,enum nl80211_band band)2413 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2414 struct sk_buff *skb, int tid,
2415 enum nl80211_band band)
2416 {
2417 rcu_read_lock();
2418 __ieee80211_tx_skb_tid_band(sdata, skb, tid, -1, band);
2419 rcu_read_unlock();
2420 }
2421
2422 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
2423 struct sk_buff *skb, int tid, int link_id);
2424
ieee80211_tx_skb(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb)2425 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
2426 struct sk_buff *skb)
2427 {
2428 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
2429 ieee80211_tx_skb_tid(sdata, skb, 7, -1);
2430 }
2431
2432 /**
2433 * struct ieee80211_elems_parse_params - element parsing parameters
2434 * @mode: connection mode for parsing
2435 * @start: pointer to the elements
2436 * @len: length of the elements
2437 * @type: type of the frame the elements came from
2438 * (action, probe response, beacon, etc.)
2439 * @filter: bitmap of element IDs to filter out while calculating
2440 * the element CRC
2441 * @crc: CRC starting value
2442 * @bss: the BSS to parse this as, for multi-BSSID cases this can
2443 * represent a non-transmitting BSS in which case the data
2444 * for that non-transmitting BSS is returned
2445 * @link_id: the link ID to parse elements for, if a STA profile
2446 * is present in the multi-link element, or -1 to ignore;
2447 * note that the code currently assumes parsing an association
2448 * (or re-association) response frame if this is given
2449 * @from_ap: frame is received from an AP (currently used only
2450 * for EHT capabilities parsing)
2451 */
2452 struct ieee80211_elems_parse_params {
2453 enum ieee80211_conn_mode mode;
2454 const u8 *start;
2455 size_t len;
2456 u8 type;
2457 u64 filter;
2458 u32 crc;
2459 struct cfg80211_bss *bss;
2460 int link_id;
2461 bool from_ap;
2462 };
2463
2464 struct ieee802_11_elems *
2465 ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params);
2466
2467 static inline struct ieee802_11_elems *
ieee802_11_parse_elems(const u8 * start,size_t len,u8 type,struct cfg80211_bss * bss)2468 ieee802_11_parse_elems(const u8 *start, size_t len, u8 type,
2469 struct cfg80211_bss *bss)
2470 {
2471 struct ieee80211_elems_parse_params params = {
2472 .mode = IEEE80211_CONN_MODE_HIGHEST,
2473 .start = start,
2474 .len = len,
2475 .type = type,
2476 .bss = bss,
2477 .link_id = -1,
2478 };
2479
2480 return ieee802_11_parse_elems_full(¶ms);
2481 }
2482
2483 extern const int ieee802_1d_to_ac[8];
2484
ieee80211_ac_from_tid(int tid)2485 static inline int ieee80211_ac_from_tid(int tid)
2486 {
2487 return ieee802_1d_to_ac[tid & 7];
2488 }
2489
2490 void ieee80211_dynamic_ps_enable_work(struct wiphy *wiphy,
2491 struct wiphy_work *work);
2492 void ieee80211_dynamic_ps_disable_work(struct wiphy *wiphy,
2493 struct wiphy_work *work);
2494 void ieee80211_dynamic_ps_timer(struct timer_list *t);
2495 void ieee80211_send_nullfunc(struct ieee80211_local *local,
2496 struct ieee80211_sub_if_data *sdata,
2497 bool powersave);
2498 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
2499 struct ieee80211_sub_if_data *sdata);
2500 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2501 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
2502 unsigned int
2503 ieee80211_get_vif_queues(struct ieee80211_local *local,
2504 struct ieee80211_sub_if_data *sdata);
2505 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
2506 unsigned long queues,
2507 enum queue_stop_reason reason,
2508 bool refcounted);
2509 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
2510 unsigned long queues,
2511 enum queue_stop_reason reason,
2512 bool refcounted);
2513 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
2514 enum queue_stop_reason reason,
2515 bool refcounted);
2516 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
2517 enum queue_stop_reason reason,
2518 bool refcounted);
2519 static inline void
ieee80211_stop_vif_queues(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,enum queue_stop_reason reason)2520 ieee80211_stop_vif_queues(struct ieee80211_local *local,
2521 struct ieee80211_sub_if_data *sdata,
2522 enum queue_stop_reason reason)
2523 {
2524 ieee80211_stop_queues_by_reason(&local->hw,
2525 ieee80211_get_vif_queues(local, sdata),
2526 reason, true);
2527 }
2528
2529 static inline void
ieee80211_wake_vif_queues(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,enum queue_stop_reason reason)2530 ieee80211_wake_vif_queues(struct ieee80211_local *local,
2531 struct ieee80211_sub_if_data *sdata,
2532 enum queue_stop_reason reason)
2533 {
2534 ieee80211_wake_queues_by_reason(&local->hw,
2535 ieee80211_get_vif_queues(local, sdata),
2536 reason, true);
2537 }
2538 static inline void
ieee80211_stop_vif_queues_norefcount(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,enum queue_stop_reason reason)2539 ieee80211_stop_vif_queues_norefcount(struct ieee80211_local *local,
2540 struct ieee80211_sub_if_data *sdata,
2541 enum queue_stop_reason reason)
2542 {
2543 ieee80211_stop_queues_by_reason(&local->hw,
2544 ieee80211_get_vif_queues(local, sdata),
2545 reason, false);
2546 }
2547 static inline void
ieee80211_wake_vif_queues_norefcount(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,enum queue_stop_reason reason)2548 ieee80211_wake_vif_queues_norefcount(struct ieee80211_local *local,
2549 struct ieee80211_sub_if_data *sdata,
2550 enum queue_stop_reason reason)
2551 {
2552 ieee80211_wake_queues_by_reason(&local->hw,
2553 ieee80211_get_vif_queues(local, sdata),
2554 reason, false);
2555 }
2556 void ieee80211_add_pending_skb(struct ieee80211_local *local,
2557 struct sk_buff *skb);
2558 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
2559 struct sk_buff_head *skbs);
2560 void ieee80211_flush_queues(struct ieee80211_local *local,
2561 struct ieee80211_sub_if_data *sdata, bool drop);
2562 void __ieee80211_flush_queues(struct ieee80211_local *local,
2563 struct ieee80211_sub_if_data *sdata,
2564 unsigned int queues, bool drop);
2565
ieee80211_can_run_worker(struct ieee80211_local * local)2566 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2567 {
2568 /*
2569 * It's unsafe to try to do any work during reconfigure flow.
2570 * When the flow ends the work will be requeued.
2571 */
2572 if (local->in_reconfig)
2573 return false;
2574
2575 /*
2576 * If quiescing is set, we are racing with __ieee80211_suspend.
2577 * __ieee80211_suspend flushes the workers after setting quiescing,
2578 * and we check quiescing / suspended before enqueuing new workers.
2579 * We should abort the worker to avoid the races below.
2580 */
2581 if (local->quiescing)
2582 return false;
2583
2584 /*
2585 * We might already be suspended if the following scenario occurs:
2586 * __ieee80211_suspend Control path
2587 *
2588 * if (local->quiescing)
2589 * return;
2590 * local->quiescing = true;
2591 * flush_workqueue();
2592 * queue_work(...);
2593 * local->suspended = true;
2594 * local->quiescing = false;
2595 * worker starts running...
2596 */
2597 if (local->suspended)
2598 return false;
2599
2600 return true;
2601 }
2602
2603 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2604 void ieee80211_txq_set_params(struct ieee80211_local *local, int radio_idx);
2605 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2606 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2607 struct sta_info *sta,
2608 struct txq_info *txq, int tid);
2609 void ieee80211_txq_purge(struct ieee80211_local *local,
2610 struct txq_info *txqi);
2611 void ieee80211_purge_sta_txqs(struct sta_info *sta);
2612 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2613 struct ieee80211_sub_if_data *sdata);
2614 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2615 struct txq_info *txqi);
2616 void ieee80211_wake_txqs(struct tasklet_struct *t);
2617 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2618 u16 transaction, u16 auth_alg, u16 status,
2619 const u8 *extra, size_t extra_len, const u8 *bssid,
2620 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2621 u32 tx_flags);
2622 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2623 const u8 *da, const u8 *bssid,
2624 u16 stype, u16 reason,
2625 bool send_frame, u8 *frame_buf);
2626
2627 enum {
2628 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
2629 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
2630 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
2631 };
2632
2633 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2634 size_t buffer_len,
2635 struct ieee80211_scan_ies *ie_desc,
2636 const u8 *ie, size_t ie_len,
2637 u8 bands_used, u32 *rate_masks,
2638 struct cfg80211_chan_def *chandef,
2639 u32 flags);
2640 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2641 const u8 *src, const u8 *dst,
2642 u32 ratemask,
2643 struct ieee80211_channel *chan,
2644 const u8 *ssid, size_t ssid_len,
2645 const u8 *ie, size_t ie_len,
2646 u32 flags);
2647 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2648 struct ieee802_11_elems *elems,
2649 enum nl80211_band band, u32 *basic_rates);
2650 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2651 struct ieee80211_link_data *link,
2652 enum ieee80211_smps_mode smps_mode);
2653 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata,
2654 struct ieee80211_link_data *link);
2655 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata,
2656 int link_id);
2657
2658 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2659 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2660 u16 cap);
2661 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2662 const struct cfg80211_chan_def *chandef,
2663 u16 prot_mode, bool rifs_mode);
2664 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2665 const struct cfg80211_chan_def *chandef);
2666 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2667 u32 cap);
2668 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2669 const struct cfg80211_chan_def *chandef);
2670 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata);
2671 u8 *ieee80211_ie_build_he_oper(u8 *pos, const struct cfg80211_chan_def *chandef);
2672 u8 *ieee80211_ie_build_eht_oper(u8 *pos, const struct cfg80211_chan_def *chandef,
2673 const struct ieee80211_sta_eht_cap *eht_cap);
2674 int ieee80211_parse_bitrates(const struct ieee80211_supported_band *sband,
2675 const u8 *srates, int srates_len, u32 *rates);
2676 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2677 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
2678 struct ieee80211_sta_s1g_cap *caps,
2679 struct sk_buff *skb);
2680 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
2681 struct sk_buff *skb);
2682
2683 /* element building in SKBs */
2684 int ieee80211_put_srates_elem(struct sk_buff *skb,
2685 const struct ieee80211_supported_band *sband,
2686 u32 basic_rates, u32 masked_rates,
2687 u8 element_id);
2688 int ieee80211_put_he_cap(struct sk_buff *skb,
2689 struct ieee80211_sub_if_data *sdata,
2690 const struct ieee80211_supported_band *sband,
2691 const struct ieee80211_conn_settings *conn);
2692 int ieee80211_put_he_6ghz_cap(struct sk_buff *skb,
2693 struct ieee80211_sub_if_data *sdata,
2694 enum ieee80211_smps_mode smps_mode);
2695 int ieee80211_put_eht_cap(struct sk_buff *skb,
2696 struct ieee80211_sub_if_data *sdata,
2697 const struct ieee80211_supported_band *sband,
2698 const struct ieee80211_conn_settings *conn);
2699 int ieee80211_put_uhr_cap(struct sk_buff *skb,
2700 struct ieee80211_sub_if_data *sdata,
2701 const struct ieee80211_supported_band *sband);
2702 int ieee80211_put_reg_conn(struct sk_buff *skb,
2703 enum ieee80211_channel_flags flags);
2704
2705 /* channel management */
2706 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2707 struct cfg80211_chan_def *chandef);
2708 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
2709 const struct ieee80211_vht_operation *oper,
2710 const struct ieee80211_ht_operation *htop,
2711 struct cfg80211_chan_def *chandef);
2712 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation_info *info,
2713 struct cfg80211_chan_def *chandef);
2714 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_local *local,
2715 const struct ieee80211_he_operation *he_oper,
2716 const struct ieee80211_eht_operation *eht_oper,
2717 struct cfg80211_chan_def *chandef);
2718 bool ieee80211_chandef_s1g_oper(struct ieee80211_local *local,
2719 const struct ieee80211_s1g_oper_ie *oper,
2720 struct cfg80211_chan_def *chandef);
2721 void ieee80211_chandef_downgrade(struct cfg80211_chan_def *chandef,
2722 struct ieee80211_conn_settings *conn);
2723 static inline void
ieee80211_chanreq_downgrade(struct ieee80211_chan_req * chanreq,struct ieee80211_conn_settings * conn)2724 ieee80211_chanreq_downgrade(struct ieee80211_chan_req *chanreq,
2725 struct ieee80211_conn_settings *conn)
2726 {
2727 ieee80211_chandef_downgrade(&chanreq->oper, conn);
2728 if (WARN_ON(!conn))
2729 return;
2730 if (conn->mode < IEEE80211_CONN_MODE_EHT)
2731 chanreq->ap.chan = NULL;
2732 }
2733
2734 bool ieee80211_chanreq_identical(const struct ieee80211_chan_req *a,
2735 const struct ieee80211_chan_req *b);
2736
2737 int __must_check
2738 _ieee80211_link_use_channel(struct ieee80211_link_data *link,
2739 const struct ieee80211_chan_req *req,
2740 enum ieee80211_chanctx_mode mode,
2741 bool assign_on_failure);
2742
2743 static inline int __must_check
ieee80211_link_use_channel(struct ieee80211_link_data * link,const struct ieee80211_chan_req * req,enum ieee80211_chanctx_mode mode)2744 ieee80211_link_use_channel(struct ieee80211_link_data *link,
2745 const struct ieee80211_chan_req *req,
2746 enum ieee80211_chanctx_mode mode)
2747 {
2748 return _ieee80211_link_use_channel(link, req, mode, false);
2749 }
2750
2751 int __must_check
2752 ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link,
2753 const struct ieee80211_chan_req *req,
2754 enum ieee80211_chanctx_mode mode,
2755 bool radar_required);
2756 int __must_check
2757 ieee80211_link_use_reserved_context(struct ieee80211_link_data *link);
2758 void ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link);
2759
2760 int __must_check
2761 ieee80211_link_change_chanreq(struct ieee80211_link_data *link,
2762 const struct ieee80211_chan_req *req,
2763 u64 *changed);
2764 void __ieee80211_link_release_channel(struct ieee80211_link_data *link,
2765 bool skip_idle_recalc);
2766 void ieee80211_link_release_channel(struct ieee80211_link_data *link);
2767 void ieee80211_link_vlan_copy_chanctx(struct ieee80211_link_data *link);
2768 void ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link,
2769 bool clear);
2770 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2771 struct ieee80211_chanctx *ctx);
2772
2773 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2774 struct ieee80211_chanctx *chanctx);
2775 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2776 struct ieee80211_chanctx *ctx);
2777 bool ieee80211_is_radar_required(struct ieee80211_local *local,
2778 struct cfg80211_scan_request *req);
2779 bool ieee80211_is_radio_idx_in_scan_req(struct wiphy *wiphy,
2780 struct cfg80211_scan_request *scan_req,
2781 int radio_idx);
2782
2783 void ieee80211_dfs_cac_timer_work(struct wiphy *wiphy, struct wiphy_work *work);
2784 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local,
2785 struct ieee80211_chanctx *chanctx);
2786 void ieee80211_dfs_radar_detected_work(struct wiphy *wiphy,
2787 struct wiphy_work *work);
2788 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2789 struct cfg80211_csa_settings *csa_settings);
2790 void ieee80211_recalc_sb_count(struct ieee80211_sub_if_data *sdata, u64 tsf);
2791 void ieee80211_recalc_dtim(struct ieee80211_sub_if_data *sdata, u64 tsf);
2792 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2793 const struct cfg80211_chan_def *chandef,
2794 enum ieee80211_chanctx_mode chanmode,
2795 u8 radar_detect, int radio_idx);
2796 int ieee80211_max_num_channels(struct ieee80211_local *local, int radio_idx);
2797 u32 ieee80211_get_radio_mask(struct wiphy *wiphy, struct net_device *dev);
2798 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2799 struct ieee80211_chanctx *ctx);
2800
2801 /* TDLS */
2802 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2803 const u8 *peer, int link_id,
2804 u8 action_code, u8 dialog_token, u16 status_code,
2805 u32 peer_capability, bool initiator,
2806 const u8 *extra_ies, size_t extra_ies_len);
2807 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2808 const u8 *peer, enum nl80211_tdls_operation oper);
2809 void ieee80211_tdls_peer_del_work(struct wiphy *wiphy, struct wiphy_work *wk);
2810 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2811 const u8 *addr, u8 oper_class,
2812 struct cfg80211_chan_def *chandef);
2813 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2814 struct net_device *dev,
2815 const u8 *addr);
2816 void ieee80211_teardown_tdls_peers(struct ieee80211_link_data *link);
2817 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2818 const u8 *peer, u16 reason);
2819 void
2820 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata,
2821 struct sk_buff *skb);
2822
2823
2824 const char *ieee80211_get_reason_code_string(u16 reason_code);
2825 u16 ieee80211_encode_usf(int val);
2826 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
2827 enum nl80211_iftype type);
2828
2829 extern const struct ethtool_ops ieee80211_ethtool_ops;
2830
2831 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw,
2832 struct ieee80211_vif *vif,
2833 struct ieee80211_sta *pubsta,
2834 int len, bool ampdu);
2835 #ifdef CONFIG_MAC80211_NOINLINE
2836 #define debug_noinline noinline
2837 #else
2838 #define debug_noinline
2839 #endif
2840
2841 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache);
2842 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache);
2843
2844 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata);
2845
2846 void ieee80211_rx_eml_op_mode_notif(struct ieee80211_sub_if_data *sdata,
2847 struct sk_buff *skb);
2848 void
2849 ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata,
2850 struct ieee80211_supported_band *sband,
2851 const u8 *he_cap_ie, u8 he_cap_len,
2852 const struct ieee80211_eht_cap_elem *eht_cap_ie_elem,
2853 u8 eht_cap_len,
2854 struct link_sta_info *link_sta);
2855 void ieee80211_process_neg_ttlm_req(struct ieee80211_sub_if_data *sdata,
2856 struct ieee80211_mgmt *mgmt, size_t len);
2857 void ieee80211_process_neg_ttlm_res(struct ieee80211_sub_if_data *sdata,
2858 struct ieee80211_mgmt *mgmt, size_t len);
2859 int ieee80211_req_neg_ttlm(struct ieee80211_sub_if_data *sdata,
2860 struct cfg80211_ttlm_params *params);
2861 void ieee80211_process_ttlm_teardown(struct ieee80211_sub_if_data *sdata);
2862
2863 void ieee80211_check_wbrf_support(struct ieee80211_local *local);
2864 void ieee80211_add_wbrf(struct ieee80211_local *local, struct cfg80211_chan_def *chandef);
2865 void ieee80211_remove_wbrf(struct ieee80211_local *local, struct cfg80211_chan_def *chandef);
2866 int ieee80211_mgd_set_epcs(struct ieee80211_sub_if_data *sdata, bool enable);
2867 void ieee80211_process_epcs_ena_resp(struct ieee80211_sub_if_data *sdata,
2868 struct ieee80211_mgmt *mgmt, size_t len);
2869 void ieee80211_process_epcs_teardown(struct ieee80211_sub_if_data *sdata,
2870 struct ieee80211_mgmt *mgmt, size_t len);
2871
2872 int ieee80211_mgd_assoc_ml_reconf(struct ieee80211_sub_if_data *sdata,
2873 struct cfg80211_ml_reconf_req *req);
2874
2875 void ieee80211_process_ml_reconf_resp(struct ieee80211_sub_if_data *sdata,
2876 struct ieee80211_mgmt *mgmt, size_t len);
2877 void ieee80211_stop_mbssid(struct ieee80211_sub_if_data *sdata);
2878
2879 void
2880 ieee80211_uhr_cap_ie_to_sta_uhr_cap(struct ieee80211_sub_if_data *sdata,
2881 struct ieee80211_supported_band *sband,
2882 const struct ieee80211_uhr_cap *uhr_cap,
2883 u8 uhr_cap_len,
2884 struct link_sta_info *link_sta);
2885
2886 #if IS_ENABLED(CONFIG_MAC80211_KUNIT_TEST)
2887 #define EXPORT_SYMBOL_IF_MAC80211_KUNIT(sym) EXPORT_SYMBOL_IF_KUNIT(sym)
2888 #define VISIBLE_IF_MAC80211_KUNIT
2889 ieee80211_rx_result
2890 ieee80211_drop_unencrypted_mgmt(struct ieee80211_rx_data *rx);
2891 int ieee80211_calc_chandef_subchan_offset(const struct cfg80211_chan_def *ap,
2892 u8 n_partial_subchans);
2893 void ieee80211_rearrange_tpe_psd(struct ieee80211_parsed_tpe_psd *psd,
2894 const struct cfg80211_chan_def *ap,
2895 const struct cfg80211_chan_def *used);
2896 struct ieee802_11_elems *
2897 ieee80211_determine_chan_mode(struct ieee80211_sub_if_data *sdata,
2898 struct ieee80211_conn_settings *conn,
2899 struct cfg80211_bss *cbss, int link_id,
2900 struct ieee80211_chan_req *chanreq,
2901 struct cfg80211_chan_def *ap_chandef,
2902 unsigned long *userspace_selectors);
2903 #else
2904 #define EXPORT_SYMBOL_IF_MAC80211_KUNIT(sym)
2905 #define VISIBLE_IF_MAC80211_KUNIT static
2906 #endif
2907
2908 #endif /* IEEE80211_I_H */
2909