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) 2018-2024 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 enum ieee80211_status_data {
90 IEEE80211_STATUS_TYPE_MASK = 0x00f,
91 IEEE80211_STATUS_TYPE_INVALID = 0,
92 IEEE80211_STATUS_TYPE_SMPS = 1,
93 IEEE80211_STATUS_TYPE_NEG_TTLM = 2,
94 IEEE80211_STATUS_SUBDATA_MASK = 0x1ff0,
95 };
96
97 static inline bool
ieee80211_sta_keep_active(struct sta_info * sta,u8 ac)98 ieee80211_sta_keep_active(struct sta_info *sta, u8 ac)
99 {
100 /* Keep a station's queues on the active list for deficit accounting
101 * purposes if it was active or queued during the last 100ms.
102 */
103 return time_before_eq(jiffies, sta->airtime[ac].last_active + HZ / 10);
104 }
105
106 struct ieee80211_bss {
107 u32 device_ts_beacon, device_ts_presp;
108
109 bool wmm_used;
110 bool uapsd_supported;
111
112 #define IEEE80211_MAX_SUPP_RATES 32
113 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
114 size_t supp_rates_len;
115 struct ieee80211_rate *beacon_rate;
116
117 u32 vht_cap_info;
118
119 /*
120 * During association, we save an ERP value from a probe response so
121 * that we can feed ERP info to the driver when handling the
122 * association completes. these fields probably won't be up-to-date
123 * otherwise, you probably don't want to use them.
124 */
125 bool has_erp_value;
126 u8 erp_value;
127
128 /* Keep track of the corruption of the last beacon/probe response. */
129 u8 corrupt_data;
130
131 /* Keep track of what bits of information we have valid info for. */
132 u8 valid_data;
133 };
134
135 /**
136 * enum ieee80211_bss_corrupt_data_flags - BSS data corruption flags
137 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
138 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
139 *
140 * These are bss flags that are attached to a bss in the
141 * @corrupt_data field of &struct ieee80211_bss.
142 */
143 enum ieee80211_bss_corrupt_data_flags {
144 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
145 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
146 };
147
148 /**
149 * enum ieee80211_bss_valid_data_flags - BSS valid data flags
150 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
151 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
152 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
153 *
154 * These are bss flags that are attached to a bss in the
155 * @valid_data field of &struct ieee80211_bss. They show which parts
156 * of the data structure were received as a result of an un-corrupted
157 * beacon/probe response.
158 */
159 enum ieee80211_bss_valid_data_flags {
160 IEEE80211_BSS_VALID_WMM = BIT(1),
161 IEEE80211_BSS_VALID_RATES = BIT(2),
162 IEEE80211_BSS_VALID_ERP = BIT(3)
163 };
164
165 typedef unsigned __bitwise ieee80211_tx_result;
166 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
167 #define TX_DROP ((__force ieee80211_tx_result) 1u)
168 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
169
170 #define IEEE80211_TX_UNICAST BIT(1)
171 #define IEEE80211_TX_PS_BUFFERED BIT(2)
172
173 struct ieee80211_tx_data {
174 struct sk_buff *skb;
175 struct sk_buff_head skbs;
176 struct ieee80211_local *local;
177 struct ieee80211_sub_if_data *sdata;
178 struct sta_info *sta;
179 struct ieee80211_key *key;
180 struct ieee80211_tx_rate rate;
181
182 unsigned int flags;
183 };
184
185 /**
186 * enum ieee80211_packet_rx_flags - packet RX flags
187 * @IEEE80211_RX_AMSDU: a-MSDU packet
188 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
189 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
190 *
191 * These are per-frame flags that are attached to a frame in the
192 * @rx_flags field of &struct ieee80211_rx_status.
193 */
194 enum ieee80211_packet_rx_flags {
195 IEEE80211_RX_AMSDU = BIT(3),
196 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
197 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
198 };
199
200 /**
201 * enum ieee80211_rx_flags - RX data flags
202 *
203 * @IEEE80211_RX_CMNTR: received on cooked monitor already
204 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
205 * to cfg80211_report_obss_beacon().
206 *
207 * These flags are used across handling multiple interfaces
208 * for a single frame.
209 */
210 enum ieee80211_rx_flags {
211 IEEE80211_RX_CMNTR = BIT(0),
212 IEEE80211_RX_BEACON_REPORTED = BIT(1),
213 };
214
215 struct ieee80211_rx_data {
216 struct list_head *list;
217 struct sk_buff *skb;
218 struct ieee80211_local *local;
219 struct ieee80211_sub_if_data *sdata;
220 struct ieee80211_link_data *link;
221 struct sta_info *sta;
222 struct link_sta_info *link_sta;
223 struct ieee80211_key *key;
224
225 unsigned int flags;
226
227 /*
228 * Index into sequence numbers array, 0..16
229 * since the last (16) is used for non-QoS,
230 * will be 16 on non-QoS frames.
231 */
232 int seqno_idx;
233
234 /*
235 * Index into the security IV/PN arrays, 0..16
236 * since the last (16) is used for CCMP-encrypted
237 * management frames, will be set to 16 on mgmt
238 * frames and 0 on non-QoS frames.
239 */
240 int security_idx;
241
242 int link_id;
243
244 union {
245 struct {
246 u32 iv32;
247 u16 iv16;
248 } tkip;
249 struct {
250 u8 pn[IEEE80211_CCMP_PN_LEN];
251 } ccm_gcm;
252 };
253 };
254
255 struct ieee80211_csa_settings {
256 const u16 *counter_offsets_beacon;
257 const u16 *counter_offsets_presp;
258
259 int n_counter_offsets_beacon;
260 int n_counter_offsets_presp;
261
262 u8 count;
263 };
264
265 struct ieee80211_color_change_settings {
266 u16 counter_offset_beacon;
267 u16 counter_offset_presp;
268 u8 count;
269 };
270
271 struct beacon_data {
272 u8 *head, *tail;
273 int head_len, tail_len;
274 struct ieee80211_meshconf_ie *meshconf;
275 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
276 u8 cntdwn_current_counter;
277 struct cfg80211_mbssid_elems *mbssid_ies;
278 struct cfg80211_rnr_elems *rnr_ies;
279 struct rcu_head rcu_head;
280 };
281
282 struct probe_resp {
283 struct rcu_head rcu_head;
284 int len;
285 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
286 u8 data[];
287 };
288
289 struct fils_discovery_data {
290 struct rcu_head rcu_head;
291 int len;
292 u8 data[];
293 };
294
295 struct unsol_bcast_probe_resp_data {
296 struct rcu_head rcu_head;
297 int len;
298 u8 data[];
299 };
300
301 struct ps_data {
302 /* yes, this looks ugly, but guarantees that we can later use
303 * bitmap_empty :)
304 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
305 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
306 __aligned(__alignof__(unsigned long));
307 struct sk_buff_head bc_buf;
308 atomic_t num_sta_ps; /* number of stations in PS mode */
309 int dtim_count;
310 bool dtim_bc_mc;
311 };
312
313 struct ieee80211_if_ap {
314 struct list_head vlans; /* write-protected with RTNL and local->mtx */
315
316 struct ps_data ps;
317 atomic_t num_mcast_sta; /* number of stations receiving multicast */
318
319 bool multicast_to_unicast;
320 bool active;
321 };
322
323 struct ieee80211_if_vlan {
324 struct list_head list; /* write-protected with RTNL and local->mtx */
325
326 /* used for all tx if the VLAN is configured to 4-addr mode */
327 struct sta_info __rcu *sta;
328 atomic_t num_mcast_sta; /* number of stations receiving multicast */
329 };
330
331 struct mesh_stats {
332 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
333 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
334 __u32 fwded_frames; /* Mesh total forwarded frames */
335 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
336 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
337 };
338
339 #define PREQ_Q_F_START 0x1
340 #define PREQ_Q_F_REFRESH 0x2
341 struct mesh_preq_queue {
342 struct list_head list;
343 u8 dst[ETH_ALEN];
344 u8 flags;
345 };
346
347 struct ieee80211_roc_work {
348 struct list_head list;
349
350 struct ieee80211_sub_if_data *sdata;
351
352 struct ieee80211_channel *chan;
353
354 bool started, abort, hw_begun, notified;
355 bool on_channel;
356
357 unsigned long start_time;
358
359 u32 duration, req_duration;
360 struct sk_buff *frame;
361 u64 cookie, mgmt_tx_cookie;
362 enum ieee80211_roc_type type;
363 };
364
365 /* flags used in struct ieee80211_if_managed.flags */
366 enum ieee80211_sta_flags {
367 IEEE80211_STA_CONNECTION_POLL = BIT(1),
368 IEEE80211_STA_CONTROL_PORT = BIT(2),
369 IEEE80211_STA_MFP_ENABLED = BIT(6),
370 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
371 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
372 IEEE80211_STA_ENABLE_RRM = BIT(15),
373 };
374
375 enum ieee80211_conn_mode {
376 IEEE80211_CONN_MODE_S1G,
377 IEEE80211_CONN_MODE_LEGACY,
378 IEEE80211_CONN_MODE_HT,
379 IEEE80211_CONN_MODE_VHT,
380 IEEE80211_CONN_MODE_HE,
381 IEEE80211_CONN_MODE_EHT,
382 };
383
384 #define IEEE80211_CONN_MODE_HIGHEST IEEE80211_CONN_MODE_EHT
385
386 enum ieee80211_conn_bw_limit {
387 IEEE80211_CONN_BW_LIMIT_20,
388 IEEE80211_CONN_BW_LIMIT_40,
389 IEEE80211_CONN_BW_LIMIT_80,
390 IEEE80211_CONN_BW_LIMIT_160, /* also 80+80 */
391 IEEE80211_CONN_BW_LIMIT_320,
392 };
393
394 struct ieee80211_conn_settings {
395 enum ieee80211_conn_mode mode;
396 enum ieee80211_conn_bw_limit bw_limit;
397 };
398
399 extern const struct ieee80211_conn_settings ieee80211_conn_settings_unlimited;
400
401 struct ieee80211_mgd_auth_data {
402 struct cfg80211_bss *bss;
403 unsigned long timeout;
404 int tries;
405 u16 algorithm, expected_transaction;
406
407 u8 key[WLAN_KEY_LEN_WEP104];
408 u8 key_len, key_idx;
409 bool done, waiting;
410 bool peer_confirmed;
411 bool timeout_started;
412 int link_id;
413
414 u8 ap_addr[ETH_ALEN] __aligned(2);
415
416 u16 sae_trans, sae_status;
417 size_t data_len;
418 u8 data[];
419 };
420
421 struct ieee80211_mgd_assoc_data {
422 struct {
423 struct cfg80211_bss *bss;
424
425 u8 addr[ETH_ALEN] __aligned(2);
426
427 u8 ap_ht_param;
428
429 struct ieee80211_vht_cap ap_vht_cap;
430
431 size_t elems_len;
432 u8 *elems; /* pointing to inside ie[] below */
433
434 struct ieee80211_conn_settings conn;
435
436 u16 status;
437
438 bool disabled;
439 } link[IEEE80211_MLD_MAX_NUM_LINKS];
440
441 u8 ap_addr[ETH_ALEN] __aligned(2);
442
443 /* this is for a workaround, so we use it only for non-MLO */
444 const u8 *supp_rates;
445 u8 supp_rates_len;
446
447 unsigned long timeout;
448 int tries;
449
450 u8 prev_ap_addr[ETH_ALEN];
451 u8 ssid[IEEE80211_MAX_SSID_LEN];
452 u8 ssid_len;
453 bool wmm, uapsd;
454 bool need_beacon;
455 bool synced;
456 bool timeout_started;
457 bool comeback; /* whether the AP has requested association comeback */
458 bool s1g;
459 bool spp_amsdu;
460
461 unsigned int assoc_link_id;
462
463 u8 fils_nonces[2 * FILS_NONCE_LEN];
464 u8 fils_kek[FILS_MAX_KEK_LEN];
465 size_t fils_kek_len;
466
467 size_t ie_len;
468 u8 *ie_pos; /* used to fill ie[] with link[].elems */
469 u8 ie[];
470 };
471
472 struct ieee80211_sta_tx_tspec {
473 /* timestamp of the first packet in the time slice */
474 unsigned long time_slice_start;
475
476 u32 admitted_time; /* in usecs, unlike over the air */
477 u8 tsid;
478 s8 up; /* signed to be able to invalidate with -1 during teardown */
479
480 /* consumed TX time in microseconds in the time slice */
481 u32 consumed_tx_time;
482 enum {
483 TX_TSPEC_ACTION_NONE = 0,
484 TX_TSPEC_ACTION_DOWNGRADE,
485 TX_TSPEC_ACTION_STOP_DOWNGRADE,
486 } action;
487 bool downgraded;
488 };
489
490 /* Advertised TID-to-link mapping info */
491 struct ieee80211_adv_ttlm_info {
492 /* time in TUs at which the new mapping is established, or 0 if there is
493 * no planned advertised TID-to-link mapping
494 */
495 u16 switch_time;
496 u32 duration; /* duration of the planned T2L map in TUs */
497 u16 map; /* map of usable links for all TIDs */
498 bool active; /* whether the advertised mapping is active or not */
499 };
500
501 DECLARE_EWMA(beacon_signal, 4, 4)
502
503 struct ieee80211_if_managed {
504 struct timer_list timer;
505 struct timer_list conn_mon_timer;
506 struct timer_list bcn_mon_timer;
507 struct wiphy_work monitor_work;
508 struct wiphy_work beacon_connection_loss_work;
509 struct wiphy_work csa_connection_drop_work;
510
511 unsigned long beacon_timeout;
512 unsigned long probe_timeout;
513 int probe_send_count;
514 bool nullfunc_failed;
515 u8 connection_loss:1,
516 driver_disconnect:1,
517 reconnect:1,
518 associated:1;
519
520 struct ieee80211_mgd_auth_data *auth_data;
521 struct ieee80211_mgd_assoc_data *assoc_data;
522
523 bool powersave; /* powersave requested for this iface */
524 bool broken_ap; /* AP is broken -- turn off powersave */
525
526 unsigned int flags;
527
528 u16 mcast_seq_last;
529
530 bool status_acked;
531 bool status_received;
532 __le16 status_fc;
533
534 enum {
535 IEEE80211_MFP_DISABLED,
536 IEEE80211_MFP_OPTIONAL,
537 IEEE80211_MFP_REQUIRED
538 } mfp; /* management frame protection */
539
540 /*
541 * Bitmask of enabled u-apsd queues,
542 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
543 * to take effect.
544 */
545 unsigned int uapsd_queues;
546
547 /*
548 * Maximum number of buffered frames AP can deliver during a
549 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
550 * Needs a new association to take effect.
551 */
552 unsigned int uapsd_max_sp_len;
553
554 u8 use_4addr;
555
556 /*
557 * State variables for keeping track of RSSI of the AP currently
558 * connected to and informing driver when RSSI has gone
559 * below/above a certain threshold.
560 */
561 int rssi_min_thold, rssi_max_thold;
562
563 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
564 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
565 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
566 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
567 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */
568 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */
569
570 /* TDLS support */
571 u8 tdls_peer[ETH_ALEN] __aligned(2);
572 struct wiphy_delayed_work tdls_peer_del_work;
573 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
574 struct sk_buff *teardown_skb; /* A copy to send through the AP */
575 spinlock_t teardown_lock; /* To lock changing teardown_skb */
576 bool tdls_wider_bw_prohibited;
577
578 /* WMM-AC TSPEC support */
579 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
580 /* Use a separate work struct so that we can do something here
581 * while the sdata->work is flushing the queues, for example.
582 * otherwise, in scenarios where we hardly get any traffic out
583 * on the BE queue, but there's a lot of VO traffic, we might
584 * get stuck in a downgraded situation and flush takes forever.
585 */
586 struct wiphy_delayed_work tx_tspec_wk;
587
588 /* Information elements from the last transmitted (Re)Association
589 * Request frame.
590 */
591 u8 *assoc_req_ies;
592 size_t assoc_req_ies_len;
593
594 struct wiphy_delayed_work ml_reconf_work;
595 u16 removed_links;
596
597 /* TID-to-link mapping support */
598 struct wiphy_delayed_work ttlm_work;
599 struct ieee80211_adv_ttlm_info ttlm_info;
600 struct wiphy_work teardown_ttlm_work;
601
602 /* dialog token enumerator for neg TTLM request */
603 u8 dialog_token_alloc;
604 struct wiphy_delayed_work neg_ttlm_timeout_work;
605 };
606
607 struct ieee80211_if_ibss {
608 struct timer_list timer;
609 struct wiphy_work csa_connection_drop_work;
610
611 unsigned long last_scan_completed;
612
613 u32 basic_rates;
614
615 bool fixed_bssid;
616 bool fixed_channel;
617 bool privacy;
618
619 bool control_port;
620 bool userspace_handles_dfs;
621
622 u8 bssid[ETH_ALEN] __aligned(2);
623 u8 ssid[IEEE80211_MAX_SSID_LEN];
624 u8 ssid_len, ie_len;
625 u8 *ie;
626 struct cfg80211_chan_def chandef;
627
628 unsigned long ibss_join_req;
629 /* probe response/beacon for IBSS */
630 struct beacon_data __rcu *presp;
631
632 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
633 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
634
635 spinlock_t incomplete_lock;
636 struct list_head incomplete_stations;
637
638 enum {
639 IEEE80211_IBSS_MLME_SEARCH,
640 IEEE80211_IBSS_MLME_JOINED,
641 } state;
642 };
643
644 /**
645 * struct ieee80211_if_ocb - OCB mode state
646 *
647 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
648 * @wrkq_flags: OCB deferred task action
649 * @incomplete_lock: delayed STA insertion lock
650 * @incomplete_stations: list of STAs waiting for delayed insertion
651 * @joined: indication if the interface is connected to an OCB network
652 */
653 struct ieee80211_if_ocb {
654 struct timer_list housekeeping_timer;
655 unsigned long wrkq_flags;
656
657 spinlock_t incomplete_lock;
658 struct list_head incomplete_stations;
659
660 bool joined;
661 };
662
663 /**
664 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
665 *
666 * these declarations define the interface, which enables
667 * vendor-specific mesh synchronization
668 *
669 * @rx_bcn_presp: beacon/probe response was received
670 * @adjust_tsf: TSF adjustment method
671 */
672 struct ieee80211_mesh_sync_ops {
673 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, u16 stype,
674 struct ieee80211_mgmt *mgmt, unsigned int len,
675 const struct ieee80211_meshconf_ie *mesh_cfg,
676 struct ieee80211_rx_status *rx_status);
677
678 /* should be called with beacon_data under RCU read lock */
679 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
680 struct beacon_data *beacon);
681 /* add other framework functions here */
682 };
683
684 struct mesh_csa_settings {
685 struct rcu_head rcu_head;
686 struct cfg80211_csa_settings settings;
687 };
688
689 /**
690 * struct mesh_table - mesh hash table
691 *
692 * @known_gates: list of known mesh gates and their mpaths by the station. The
693 * gate's mpath may or may not be resolved and active.
694 * @gates_lock: protects updates to known_gates
695 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr
696 * @walk_head: linked list containing all mesh_path objects
697 * @walk_lock: lock protecting walk_head
698 * @entries: number of entries in the table
699 */
700 struct mesh_table {
701 struct hlist_head known_gates;
702 spinlock_t gates_lock;
703 struct rhashtable rhead;
704 struct hlist_head walk_head;
705 spinlock_t walk_lock;
706 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */
707 };
708
709 /**
710 * struct mesh_tx_cache - mesh fast xmit header cache
711 *
712 * @rht: hash table containing struct ieee80211_mesh_fast_tx, using skb DA as key
713 * @walk_head: linked list containing all ieee80211_mesh_fast_tx objects
714 * @walk_lock: lock protecting walk_head and rht
715 */
716 struct mesh_tx_cache {
717 struct rhashtable rht;
718 struct hlist_head walk_head;
719 spinlock_t walk_lock;
720 };
721
722 struct ieee80211_if_mesh {
723 struct timer_list housekeeping_timer;
724 struct timer_list mesh_path_timer;
725 struct timer_list mesh_path_root_timer;
726
727 unsigned long wrkq_flags;
728 unsigned long mbss_changed[64 / BITS_PER_LONG];
729
730 bool userspace_handles_dfs;
731
732 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
733 size_t mesh_id_len;
734 /* Active Path Selection Protocol Identifier */
735 u8 mesh_pp_id;
736 /* Active Path Selection Metric Identifier */
737 u8 mesh_pm_id;
738 /* Congestion Control Mode Identifier */
739 u8 mesh_cc_id;
740 /* Synchronization Protocol Identifier */
741 u8 mesh_sp_id;
742 /* Authentication Protocol Identifier */
743 u8 mesh_auth_id;
744 /* Local mesh Sequence Number */
745 u32 sn;
746 /* Last used PREQ ID */
747 u32 preq_id;
748 atomic_t mpaths;
749 /* Timestamp of last SN update */
750 unsigned long last_sn_update;
751 /* Time when it's ok to send next PERR */
752 unsigned long next_perr;
753 /* Timestamp of last PREQ sent */
754 unsigned long last_preq;
755 struct mesh_rmc *rmc;
756 spinlock_t mesh_preq_queue_lock;
757 struct mesh_preq_queue preq_queue;
758 int preq_queue_len;
759 struct mesh_stats mshstats;
760 struct mesh_config mshcfg;
761 atomic_t estab_plinks;
762 atomic_t mesh_seqnum;
763 bool accepting_plinks;
764 int num_gates;
765 struct beacon_data __rcu *beacon;
766 const u8 *ie;
767 u8 ie_len;
768 enum {
769 IEEE80211_MESH_SEC_NONE = 0x0,
770 IEEE80211_MESH_SEC_AUTHED = 0x1,
771 IEEE80211_MESH_SEC_SECURED = 0x2,
772 } security;
773 bool user_mpm;
774 /* Extensible Synchronization Framework */
775 const struct ieee80211_mesh_sync_ops *sync_ops;
776 s64 sync_offset_clockdrift_max;
777 spinlock_t sync_offset_lock;
778 /* mesh power save */
779 enum nl80211_mesh_power_mode nonpeer_pm;
780 int ps_peers_light_sleep;
781 int ps_peers_deep_sleep;
782 struct ps_data ps;
783 /* Channel Switching Support */
784 struct mesh_csa_settings __rcu *csa;
785 enum {
786 IEEE80211_MESH_CSA_ROLE_NONE,
787 IEEE80211_MESH_CSA_ROLE_INIT,
788 IEEE80211_MESH_CSA_ROLE_REPEATER,
789 } csa_role;
790 u8 chsw_ttl;
791 u16 pre_value;
792
793 /* offset from skb->data while building IE */
794 int meshconf_offset;
795
796 struct mesh_table mesh_paths;
797 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */
798 int mesh_paths_generation;
799 int mpp_paths_generation;
800 struct mesh_tx_cache tx_cache;
801 };
802
803 #ifdef CONFIG_MAC80211_MESH
804 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
805 do { (msh)->mshstats.name++; } while (0)
806 #else
807 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
808 do { } while (0)
809 #endif
810
811 /**
812 * enum ieee80211_sub_if_data_flags - virtual interface flags
813 *
814 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
815 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
816 * associated stations and deliver multicast frames both
817 * back to wireless media and to the local net stack.
818 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
819 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
820 * @IEEE80211_SDATA_DISCONNECT_HW_RESTART: Disconnect after hardware restart
821 * recovery
822 */
823 enum ieee80211_sub_if_data_flags {
824 IEEE80211_SDATA_ALLMULTI = BIT(0),
825 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
826 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
827 IEEE80211_SDATA_IN_DRIVER = BIT(5),
828 IEEE80211_SDATA_DISCONNECT_HW_RESTART = BIT(6),
829 };
830
831 /**
832 * enum ieee80211_sdata_state_bits - virtual interface state bits
833 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
834 * mirrors netif_running() but is separate for interface type
835 * change handling while the interface is up
836 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
837 * mode, so queues are stopped
838 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
839 * to offchannel, reset when offchannel returns
840 */
841 enum ieee80211_sdata_state_bits {
842 SDATA_STATE_RUNNING,
843 SDATA_STATE_OFFCHANNEL,
844 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
845 };
846
847 /**
848 * enum ieee80211_chanctx_mode - channel context configuration mode
849 *
850 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
851 * multiple interfaces
852 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
853 * only by a single interface. This can be used for example for
854 * non-fixed channel IBSS.
855 */
856 enum ieee80211_chanctx_mode {
857 IEEE80211_CHANCTX_SHARED,
858 IEEE80211_CHANCTX_EXCLUSIVE
859 };
860
861 /**
862 * enum ieee80211_chanctx_replace_state - channel context replacement state
863 *
864 * This is used for channel context in-place reservations that require channel
865 * context switch/swap.
866 *
867 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
868 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
869 * by a (not yet registered) channel context pointed by %replace_ctx.
870 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
871 * replaces an existing channel context pointed to by %replace_ctx.
872 */
873 enum ieee80211_chanctx_replace_state {
874 IEEE80211_CHANCTX_REPLACE_NONE,
875 IEEE80211_CHANCTX_WILL_BE_REPLACED,
876 IEEE80211_CHANCTX_REPLACES_OTHER,
877 };
878
879 struct ieee80211_chanctx {
880 struct list_head list;
881 struct rcu_head rcu_head;
882
883 struct list_head assigned_links;
884 struct list_head reserved_links;
885
886 enum ieee80211_chanctx_replace_state replace_state;
887 struct ieee80211_chanctx *replace_ctx;
888
889 enum ieee80211_chanctx_mode mode;
890 bool driver_present;
891
892 /* temporary data for search algorithm etc. */
893 struct ieee80211_chan_req req;
894
895 bool radar_detected;
896
897 /* MUST be last - ends in a flexible-array member. */
898 struct ieee80211_chanctx_conf conf;
899 };
900
901 struct mac80211_qos_map {
902 struct cfg80211_qos_map qos_map;
903 struct rcu_head rcu_head;
904 };
905
906 enum txq_info_flags {
907 IEEE80211_TXQ_STOP,
908 IEEE80211_TXQ_AMPDU,
909 IEEE80211_TXQ_NO_AMSDU,
910 IEEE80211_TXQ_DIRTY,
911 };
912
913 /**
914 * struct txq_info - per tid queue
915 *
916 * @tin: contains packets split into multiple flows
917 * @def_cvars: codel vars for the @tin's default_flow
918 * @cstats: code statistics for this queue
919 * @frags: used to keep fragments created after dequeue
920 * @schedule_order: used with ieee80211_local->active_txqs
921 * @schedule_round: counter to prevent infinite loops on TXQ scheduling
922 * @flags: TXQ flags from &enum txq_info_flags
923 * @txq: the driver visible part
924 */
925 struct txq_info {
926 struct fq_tin tin;
927 struct codel_vars def_cvars;
928 struct codel_stats cstats;
929
930 u16 schedule_round;
931 struct list_head schedule_order;
932
933 struct sk_buff_head frags;
934
935 unsigned long flags;
936
937 /* keep last! */
938 struct ieee80211_txq txq;
939 };
940
941 struct ieee80211_if_mntr {
942 u32 flags;
943 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
944
945 struct list_head list;
946 };
947
948 /**
949 * struct ieee80211_if_nan - NAN state
950 *
951 * @conf: current NAN configuration
952 * @func_lock: lock for @func_inst_ids
953 * @function_inst_ids: a bitmap of available instance_id's
954 */
955 struct ieee80211_if_nan {
956 struct cfg80211_nan_conf conf;
957
958 /* protects function_inst_ids */
959 spinlock_t func_lock;
960 struct idr function_inst_ids;
961 };
962
963 struct ieee80211_link_data_managed {
964 u8 bssid[ETH_ALEN] __aligned(2);
965
966 u8 dtim_period;
967 enum ieee80211_smps_mode req_smps, /* requested smps mode */
968 driver_smps_mode; /* smps mode request */
969
970 struct ieee80211_conn_settings conn;
971
972 s16 p2p_noa_index;
973
974 bool tdls_chan_switch_prohibited;
975
976 bool have_beacon;
977 bool tracking_signal_avg;
978 bool disable_wmm_tracking;
979 bool operating_11g_mode;
980
981 struct {
982 struct wiphy_delayed_work switch_work;
983 struct cfg80211_chan_def ap_chandef;
984 struct ieee80211_parsed_tpe tpe;
985 unsigned long time;
986 bool waiting_bcn;
987 bool ignored_same_chan;
988 bool blocked_tx;
989 } csa;
990
991 struct wiphy_work request_smps_work;
992 /* used to reconfigure hardware SM PS */
993 struct wiphy_work recalc_smps;
994
995 bool beacon_crc_valid;
996 u32 beacon_crc;
997 struct ewma_beacon_signal ave_beacon_signal;
998 int last_ave_beacon_signal;
999
1000 /*
1001 * Number of Beacon frames used in ave_beacon_signal. This can be used
1002 * to avoid generating less reliable cqm events that would be based
1003 * only on couple of received frames.
1004 */
1005 unsigned int count_beacon_signal;
1006
1007 /* Number of times beacon loss was invoked. */
1008 unsigned int beacon_loss_count;
1009
1010 /*
1011 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
1012 * that triggered a cqm event. 0 indicates that no event has been
1013 * generated for the current association.
1014 */
1015 int last_cqm_event_signal;
1016
1017 int wmm_last_param_set;
1018 int mu_edca_last_param_set;
1019
1020 u8 bss_param_ch_cnt;
1021 };
1022
1023 struct ieee80211_link_data_ap {
1024 struct beacon_data __rcu *beacon;
1025 struct probe_resp __rcu *probe_resp;
1026 struct fils_discovery_data __rcu *fils_discovery;
1027 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp;
1028
1029 /* to be used after channel switch. */
1030 struct cfg80211_beacon_data *next_beacon;
1031 };
1032
1033 struct ieee80211_link_data {
1034 struct ieee80211_sub_if_data *sdata;
1035 unsigned int link_id;
1036
1037 struct list_head assigned_chanctx_list; /* protected by wiphy mutex */
1038 struct list_head reserved_chanctx_list; /* protected by wiphy mutex */
1039
1040 /* multicast keys only */
1041 struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS +
1042 NUM_DEFAULT_MGMT_KEYS +
1043 NUM_DEFAULT_BEACON_KEYS];
1044 struct ieee80211_key __rcu *default_multicast_key;
1045 struct ieee80211_key __rcu *default_mgmt_key;
1046 struct ieee80211_key __rcu *default_beacon_key;
1047
1048
1049 bool operating_11g_mode;
1050
1051 struct {
1052 struct wiphy_work finalize_work;
1053 struct ieee80211_chan_req chanreq;
1054 } csa;
1055
1056 struct wiphy_work color_change_finalize_work;
1057 struct wiphy_delayed_work color_collision_detect_work;
1058 u64 color_bitmap;
1059
1060 /* context reservation -- protected with wiphy mutex */
1061 struct ieee80211_chanctx *reserved_chanctx;
1062 struct ieee80211_chan_req reserved;
1063 bool reserved_radar_required;
1064 bool reserved_ready;
1065
1066 u8 needed_rx_chains;
1067 enum ieee80211_smps_mode smps_mode;
1068
1069 int user_power_level; /* in dBm */
1070 int ap_power_level; /* in dBm */
1071
1072 bool radar_required;
1073 struct wiphy_delayed_work dfs_cac_timer_work;
1074
1075 union {
1076 struct ieee80211_link_data_managed mgd;
1077 struct ieee80211_link_data_ap ap;
1078 } u;
1079
1080 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
1081
1082 struct ieee80211_bss_conf *conf;
1083
1084 #ifdef CONFIG_MAC80211_DEBUGFS
1085 struct dentry *debugfs_dir;
1086 #endif
1087 };
1088
1089 struct ieee80211_sub_if_data {
1090 struct list_head list;
1091
1092 struct wireless_dev wdev;
1093
1094 /* keys */
1095 struct list_head key_list;
1096
1097 /* count for keys needing tailroom space allocation */
1098 int crypto_tx_tailroom_needed_cnt;
1099 int crypto_tx_tailroom_pending_dec;
1100 struct wiphy_delayed_work dec_tailroom_needed_wk;
1101
1102 struct net_device *dev;
1103 struct ieee80211_local *local;
1104
1105 unsigned int flags;
1106
1107 unsigned long state;
1108
1109 char name[IFNAMSIZ];
1110
1111 struct ieee80211_fragment_cache frags;
1112
1113 /* TID bitmap for NoAck policy */
1114 u16 noack_map;
1115
1116 /* bit field of ACM bits (BIT(802.1D tag)) */
1117 u8 wmm_acm;
1118
1119 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS];
1120 struct ieee80211_key __rcu *default_unicast_key;
1121
1122 u16 sequence_number;
1123 u16 mld_mcast_seq;
1124 __be16 control_port_protocol;
1125 bool control_port_no_encrypt;
1126 bool control_port_no_preauth;
1127 bool control_port_over_nl80211;
1128
1129 atomic_t num_tx_queued;
1130 struct mac80211_qos_map __rcu *qos_map;
1131
1132 struct wiphy_work work;
1133 struct sk_buff_head skb_queue;
1134 struct sk_buff_head status_queue;
1135
1136 /*
1137 * AP this belongs to: self in AP mode and
1138 * corresponding AP in VLAN mode, NULL for
1139 * all others (might be needed later in IBSS)
1140 */
1141 struct ieee80211_if_ap *bss;
1142
1143 /* bitmap of allowed (non-MCS) rate indexes for rate control */
1144 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
1145
1146 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
1147 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
1148
1149 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
1150 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
1151
1152 /* Beacon frame (non-MCS) rate (as a bitmap) */
1153 u32 beacon_rateidx_mask[NUM_NL80211_BANDS];
1154 bool beacon_rate_set;
1155
1156 union {
1157 struct ieee80211_if_ap ap;
1158 struct ieee80211_if_vlan vlan;
1159 struct ieee80211_if_managed mgd;
1160 struct ieee80211_if_ibss ibss;
1161 struct ieee80211_if_mesh mesh;
1162 struct ieee80211_if_ocb ocb;
1163 struct ieee80211_if_mntr mntr;
1164 struct ieee80211_if_nan nan;
1165 } u;
1166
1167 struct ieee80211_link_data deflink;
1168 struct ieee80211_link_data __rcu *link[IEEE80211_MLD_MAX_NUM_LINKS];
1169
1170 /* for ieee80211_set_active_links_async() */
1171 struct wiphy_work activate_links_work;
1172 u16 desired_active_links;
1173
1174 u16 restart_active_links;
1175
1176 #ifdef CONFIG_MAC80211_DEBUGFS
1177 struct {
1178 struct dentry *subdir_stations;
1179 struct dentry *default_unicast_key;
1180 struct dentry *default_multicast_key;
1181 struct dentry *default_mgmt_key;
1182 struct dentry *default_beacon_key;
1183 } debugfs;
1184 #endif
1185
1186 /* must be last, dynamically sized area in this! */
1187 struct ieee80211_vif vif;
1188 };
1189
1190 static inline
vif_to_sdata(struct ieee80211_vif * p)1191 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
1192 {
1193 return container_of(p, struct ieee80211_sub_if_data, vif);
1194 }
1195
1196 #define sdata_dereference(p, sdata) \
1197 wiphy_dereference(sdata->local->hw.wiphy, p)
1198
1199 #define for_each_sdata_link(_local, _link) \
1200 /* outer loop just to define the variables ... */ \
1201 for (struct ieee80211_sub_if_data *___sdata = NULL; \
1202 !___sdata; \
1203 ___sdata = (void *)~0 /* always stop */) \
1204 list_for_each_entry(___sdata, &(_local)->interfaces, list) \
1205 if (ieee80211_sdata_running(___sdata)) \
1206 for (int ___link_id = 0; \
1207 ___link_id < ARRAY_SIZE(___sdata->link); \
1208 ___link_id++) \
1209 if ((_link = wiphy_dereference((local)->hw.wiphy, \
1210 ___sdata->link[___link_id])))
1211
1212 #define for_each_link_data(sdata, __link) \
1213 struct ieee80211_sub_if_data *__sdata = sdata; \
1214 for (int __link_id = 0; \
1215 __link_id < ARRAY_SIZE((__sdata)->link); __link_id++) \
1216 if ((!(__sdata)->vif.valid_links || \
1217 (__sdata)->vif.valid_links & BIT(__link_id)) && \
1218 ((__link) = sdata_dereference((__sdata)->link[__link_id], \
1219 (__sdata))))
1220
1221 static inline int
ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems * elems,struct cfg80211_rnr_elems * rnr_elems,u8 i)1222 ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems,
1223 struct cfg80211_rnr_elems *rnr_elems,
1224 u8 i)
1225 {
1226 int len = 0;
1227
1228 if (!elems || !elems->cnt || i > elems->cnt)
1229 return 0;
1230
1231 if (i < elems->cnt) {
1232 len = elems->elem[i].len;
1233 if (rnr_elems) {
1234 len += rnr_elems->elem[i].len;
1235 for (i = elems->cnt; i < rnr_elems->cnt; i++)
1236 len += rnr_elems->elem[i].len;
1237 }
1238 return len;
1239 }
1240
1241 /* i == elems->cnt, calculate total length of all MBSSID elements */
1242 for (i = 0; i < elems->cnt; i++)
1243 len += elems->elem[i].len;
1244
1245 if (rnr_elems) {
1246 for (i = 0; i < rnr_elems->cnt; i++)
1247 len += rnr_elems->elem[i].len;
1248 }
1249
1250 return len;
1251 }
1252
1253 enum {
1254 IEEE80211_RX_MSG = 1,
1255 IEEE80211_TX_STATUS_MSG = 2,
1256 };
1257
1258 enum queue_stop_reason {
1259 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1260 IEEE80211_QUEUE_STOP_REASON_PS,
1261 IEEE80211_QUEUE_STOP_REASON_CSA,
1262 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1263 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1264 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1265 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1266 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1267 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1268 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1269 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE,
1270
1271 IEEE80211_QUEUE_STOP_REASONS,
1272 };
1273
1274 #ifdef CONFIG_MAC80211_LEDS
1275 struct tpt_led_trigger {
1276 char name[32];
1277 const struct ieee80211_tpt_blink *blink_table;
1278 unsigned int blink_table_len;
1279 struct timer_list timer;
1280 struct ieee80211_local *local;
1281 unsigned long prev_traffic;
1282 unsigned long tx_bytes, rx_bytes;
1283 unsigned int active, want;
1284 bool running;
1285 };
1286 #endif
1287
1288 /**
1289 * enum mac80211_scan_flags - currently active scan mode
1290 *
1291 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1292 * well be on the operating channel
1293 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1294 * determine if we are on the operating channel or not
1295 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1296 * channel. This should not interrupt normal traffic.
1297 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1298 * that the scan completed.
1299 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1300 * a scan complete for an aborted scan.
1301 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1302 * cancelled.
1303 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR
1304 * and could send a probe request after receiving a beacon.
1305 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request
1306 */
1307 enum mac80211_scan_flags {
1308 SCAN_SW_SCANNING,
1309 SCAN_HW_SCANNING,
1310 SCAN_ONCHANNEL_SCANNING,
1311 SCAN_COMPLETED,
1312 SCAN_ABORTED,
1313 SCAN_HW_CANCELLED,
1314 SCAN_BEACON_WAIT,
1315 SCAN_BEACON_DONE,
1316 };
1317
1318 /**
1319 * enum mac80211_scan_state - scan state machine states
1320 *
1321 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1322 * determines if we should keep on scanning or switch back to the
1323 * operating channel
1324 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1325 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1326 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1327 * send out data
1328 * @SCAN_RESUME: Resume the scan and scan the next channel
1329 * @SCAN_ABORT: Abort the scan and go back to operating channel
1330 */
1331 enum mac80211_scan_state {
1332 SCAN_DECISION,
1333 SCAN_SET_CHANNEL,
1334 SCAN_SEND_PROBE,
1335 SCAN_SUSPEND,
1336 SCAN_RESUME,
1337 SCAN_ABORT,
1338 };
1339
1340 DECLARE_STATIC_KEY_FALSE(aql_disable);
1341
1342 struct ieee80211_local {
1343 /* embed the driver visible part.
1344 * don't cast (use the static inlines below), but we keep
1345 * it first anyway so they become a no-op */
1346 struct ieee80211_hw hw;
1347
1348 struct fq fq;
1349 struct codel_vars *cvars;
1350 struct codel_params cparams;
1351
1352 /* protects active_txqs and txqi->schedule_order */
1353 spinlock_t active_txq_lock[IEEE80211_NUM_ACS];
1354 struct list_head active_txqs[IEEE80211_NUM_ACS];
1355 u16 schedule_round[IEEE80211_NUM_ACS];
1356
1357 /* serializes ieee80211_handle_wake_tx_queue */
1358 spinlock_t handle_wake_tx_queue_lock;
1359
1360 u16 airtime_flags;
1361 u32 aql_txq_limit_low[IEEE80211_NUM_ACS];
1362 u32 aql_txq_limit_high[IEEE80211_NUM_ACS];
1363 u32 aql_threshold;
1364 atomic_t aql_total_pending_airtime;
1365 atomic_t aql_ac_pending_airtime[IEEE80211_NUM_ACS];
1366
1367 const struct ieee80211_ops *ops;
1368
1369 /*
1370 * private workqueue to mac80211. mac80211 makes this accessible
1371 * via ieee80211_queue_work()
1372 */
1373 struct workqueue_struct *workqueue;
1374
1375 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1376 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1377 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1378 spinlock_t queue_stop_reason_lock;
1379
1380 int open_count;
1381 int monitors, cooked_mntrs;
1382 /* number of interfaces with corresponding FIF_ flags */
1383 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1384 fif_probe_req;
1385 bool probe_req_reg;
1386 bool rx_mcast_action_reg;
1387 unsigned int filter_flags; /* FIF_* */
1388
1389 bool wiphy_ciphers_allocated;
1390
1391 struct cfg80211_chan_def dflt_chandef;
1392 bool emulate_chanctx;
1393
1394 /* protects the aggregated multicast list and filter calls */
1395 spinlock_t filter_lock;
1396
1397 /* used for uploading changed mc list */
1398 struct wiphy_work reconfig_filter;
1399
1400 /* aggregated multicast list */
1401 struct netdev_hw_addr_list mc_list;
1402
1403 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1404
1405 /*
1406 * suspended is true if we finished all the suspend _and_ we have
1407 * not yet come up from resume. This is to be used by mac80211
1408 * to ensure driver sanity during suspend and mac80211's own
1409 * sanity. It can eventually be used for WoW as well.
1410 */
1411 bool suspended;
1412
1413 /* suspending is true during the whole suspend process */
1414 bool suspending;
1415
1416 /*
1417 * Resuming is true while suspended, but when we're reprogramming the
1418 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1419 * again even though some other parts of the stack are still suspended
1420 * and we still drop received frames to avoid waking the stack.
1421 */
1422 bool resuming;
1423
1424 /*
1425 * quiescing is true during the suspend process _only_ to
1426 * ease timer cancelling etc.
1427 */
1428 bool quiescing;
1429
1430 /* device is started */
1431 bool started;
1432
1433 /* device is during a HW reconfig */
1434 bool in_reconfig;
1435
1436 /* reconfiguration failed ... suppress some warnings etc. */
1437 bool reconfig_failure;
1438
1439 /* wowlan is enabled -- don't reconfig on resume */
1440 bool wowlan;
1441
1442 struct wiphy_work radar_detected_work;
1443
1444 /* number of RX chains the hardware has */
1445 u8 rx_chains;
1446
1447 /* bitmap of which sbands were copied */
1448 u8 sband_allocated;
1449
1450 int tx_headroom; /* required headroom for hardware/radiotap */
1451
1452 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1453 * added to skb_queue will be processed, but frames in
1454 * skb_queue_unreliable may be dropped if the total length of these
1455 * queues increases over the limit. */
1456 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1457 struct tasklet_struct tasklet;
1458 struct sk_buff_head skb_queue;
1459 struct sk_buff_head skb_queue_unreliable;
1460
1461 spinlock_t rx_path_lock;
1462
1463 /* Station data */
1464 /*
1465 * The list, hash table and counter are protected
1466 * by the wiphy mutex, reads are done with RCU.
1467 */
1468 spinlock_t tim_lock;
1469 unsigned long num_sta;
1470 struct list_head sta_list;
1471 struct rhltable sta_hash;
1472 struct rhltable link_sta_hash;
1473 struct timer_list sta_cleanup;
1474 int sta_generation;
1475
1476 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1477 struct tasklet_struct tx_pending_tasklet;
1478 struct tasklet_struct wake_txqs_tasklet;
1479
1480 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1481
1482 /* number of interfaces with allmulti RX */
1483 atomic_t iff_allmultis;
1484
1485 struct rate_control_ref *rate_ctrl;
1486
1487 struct arc4_ctx wep_tx_ctx;
1488 struct arc4_ctx wep_rx_ctx;
1489 u32 wep_iv;
1490
1491 /* see iface.c */
1492 struct list_head interfaces;
1493 struct list_head mon_list; /* only that are IFF_UP && !cooked */
1494 struct mutex iflist_mtx;
1495
1496 /* Scanning and BSS list */
1497 unsigned long scanning;
1498 struct cfg80211_ssid scan_ssid;
1499 struct cfg80211_scan_request *int_scan_req;
1500 struct cfg80211_scan_request __rcu *scan_req;
1501 struct ieee80211_scan_request *hw_scan_req;
1502 struct cfg80211_chan_def scan_chandef;
1503 enum nl80211_band hw_scan_band;
1504 int scan_channel_idx;
1505 int scan_ies_len;
1506 int hw_scan_ies_bufsize;
1507 struct cfg80211_scan_info scan_info;
1508
1509 struct wiphy_work sched_scan_stopped_work;
1510 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1511 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1512 u8 scan_addr[ETH_ALEN];
1513
1514 unsigned long leave_oper_channel_time;
1515 enum mac80211_scan_state next_scan_state;
1516 struct wiphy_delayed_work scan_work;
1517 struct ieee80211_sub_if_data __rcu *scan_sdata;
1518
1519 /* Temporary remain-on-channel for off-channel operations */
1520 struct ieee80211_channel *tmp_channel;
1521
1522 /* channel contexts */
1523 struct list_head chanctx_list;
1524
1525 #ifdef CONFIG_MAC80211_LEDS
1526 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1527 struct led_trigger tpt_led;
1528 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1529 atomic_t radio_led_active, tpt_led_active;
1530 struct tpt_led_trigger *tpt_led_trigger;
1531 #endif
1532
1533 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1534 /* SNMP counters */
1535 /* dot11CountersTable */
1536 u32 dot11TransmittedFragmentCount;
1537 u32 dot11MulticastTransmittedFrameCount;
1538 u32 dot11FailedCount;
1539 u32 dot11RetryCount;
1540 u32 dot11MultipleRetryCount;
1541 u32 dot11FrameDuplicateCount;
1542 u32 dot11ReceivedFragmentCount;
1543 u32 dot11MulticastReceivedFrameCount;
1544 u32 dot11TransmittedFrameCount;
1545
1546 /* TX/RX handler statistics */
1547 unsigned int tx_handlers_drop;
1548 unsigned int tx_handlers_queued;
1549 unsigned int tx_handlers_drop_wep;
1550 unsigned int tx_handlers_drop_not_assoc;
1551 unsigned int tx_handlers_drop_unauth_port;
1552 unsigned int rx_handlers_drop;
1553 unsigned int rx_handlers_queued;
1554 unsigned int rx_handlers_drop_nullfunc;
1555 unsigned int rx_handlers_drop_defrag;
1556 unsigned int tx_expand_skb_head;
1557 unsigned int tx_expand_skb_head_cloned;
1558 unsigned int rx_expand_skb_head_defrag;
1559 unsigned int rx_handlers_fragments;
1560 unsigned int tx_status_drop;
1561 #define I802_DEBUG_INC(c) (c)++
1562 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1563 #define I802_DEBUG_INC(c) do { } while (0)
1564 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1565
1566
1567 int total_ps_buffered; /* total number of all buffered unicast and
1568 * multicast packets for power saving stations
1569 */
1570
1571 bool pspolling;
1572 /*
1573 * PS can only be enabled when we have exactly one managed
1574 * interface (and monitors) in PS, this then points there.
1575 */
1576 struct ieee80211_sub_if_data *ps_sdata;
1577 struct wiphy_work dynamic_ps_enable_work;
1578 struct wiphy_work dynamic_ps_disable_work;
1579 struct timer_list dynamic_ps_timer;
1580 struct notifier_block ifa_notifier;
1581 struct notifier_block ifa6_notifier;
1582
1583 /*
1584 * The dynamic ps timeout configured from user space via WEXT -
1585 * this will override whatever chosen by mac80211 internally.
1586 */
1587 int dynamic_ps_forced_timeout;
1588
1589 int user_power_level; /* in dBm, for all interfaces */
1590
1591 struct work_struct restart_work;
1592
1593 #ifdef CONFIG_MAC80211_DEBUGFS
1594 struct local_debugfsdentries {
1595 struct dentry *rcdir;
1596 struct dentry *keys;
1597 } debugfs;
1598 bool force_tx_status;
1599 #endif
1600
1601 /*
1602 * Remain-on-channel support
1603 */
1604 struct wiphy_delayed_work roc_work;
1605 struct list_head roc_list;
1606 struct wiphy_work hw_roc_start, hw_roc_done;
1607 unsigned long hw_roc_start_time;
1608 u64 roc_cookie_counter;
1609
1610 struct idr ack_status_frames;
1611 spinlock_t ack_status_lock;
1612
1613 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1614
1615 /* virtual monitor interface */
1616 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1617 struct ieee80211_chan_req monitor_chanreq;
1618
1619 /* extended capabilities provided by mac80211 */
1620 u8 ext_capa[8];
1621
1622 bool wbrf_supported;
1623 };
1624
1625 static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(const struct net_device * dev)1626 IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev)
1627 {
1628 return netdev_priv(dev);
1629 }
1630
1631 static inline struct ieee80211_sub_if_data *
IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev * wdev)1632 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1633 {
1634 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1635 }
1636
1637 static inline struct ieee80211_supported_band *
ieee80211_get_sband(struct ieee80211_sub_if_data * sdata)1638 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1639 {
1640 struct ieee80211_local *local = sdata->local;
1641 struct ieee80211_chanctx_conf *chanctx_conf;
1642 enum nl80211_band band;
1643
1644 WARN_ON(ieee80211_vif_is_mld(&sdata->vif));
1645
1646 rcu_read_lock();
1647 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
1648
1649 if (!chanctx_conf) {
1650 rcu_read_unlock();
1651 return NULL;
1652 }
1653
1654 band = chanctx_conf->def.chan->band;
1655 rcu_read_unlock();
1656
1657 return local->hw.wiphy->bands[band];
1658 }
1659
1660 static inline struct ieee80211_supported_band *
ieee80211_get_link_sband(struct ieee80211_link_data * link)1661 ieee80211_get_link_sband(struct ieee80211_link_data *link)
1662 {
1663 struct ieee80211_local *local = link->sdata->local;
1664 struct ieee80211_chanctx_conf *chanctx_conf;
1665 enum nl80211_band band;
1666
1667 rcu_read_lock();
1668 chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
1669 if (!chanctx_conf) {
1670 rcu_read_unlock();
1671 return NULL;
1672 }
1673
1674 band = chanctx_conf->def.chan->band;
1675 rcu_read_unlock();
1676
1677 return local->hw.wiphy->bands[band];
1678 }
1679
1680 /* this struct holds the value parsing from channel switch IE */
1681 struct ieee80211_csa_ie {
1682 struct ieee80211_chan_req chanreq;
1683 u8 mode;
1684 u8 count;
1685 u8 ttl;
1686 u16 pre_value;
1687 u16 reason_code;
1688 u32 max_switch_time;
1689 };
1690
1691 enum ieee80211_elems_parse_error {
1692 IEEE80211_PARSE_ERR_INVALID_END = BIT(0),
1693 IEEE80211_PARSE_ERR_DUP_ELEM = BIT(1),
1694 IEEE80211_PARSE_ERR_BAD_ELEM_SIZE = BIT(2),
1695 IEEE80211_PARSE_ERR_UNEXPECTED_ELEM = BIT(3),
1696 IEEE80211_PARSE_ERR_DUP_NEST_ML_BASIC = BIT(4),
1697 };
1698
1699 /* Parsed Information Elements */
1700 struct ieee802_11_elems {
1701 const u8 *ie_start;
1702 size_t total_len;
1703 u32 crc;
1704
1705 /* pointers to IEs */
1706 const struct ieee80211_tdls_lnkie *lnk_id;
1707 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1708 const u8 *ext_capab;
1709 const u8 *ssid;
1710 const u8 *supp_rates;
1711 const u8 *ds_params;
1712 const struct ieee80211_tim_ie *tim;
1713 const u8 *rsn;
1714 const u8 *rsnx;
1715 const u8 *erp_info;
1716 const u8 *ext_supp_rates;
1717 const u8 *wmm_info;
1718 const u8 *wmm_param;
1719 const struct ieee80211_ht_cap *ht_cap_elem;
1720 const struct ieee80211_ht_operation *ht_operation;
1721 const struct ieee80211_vht_cap *vht_cap_elem;
1722 const struct ieee80211_vht_operation *vht_operation;
1723 const struct ieee80211_meshconf_ie *mesh_config;
1724 const u8 *he_cap;
1725 const struct ieee80211_he_operation *he_operation;
1726 const struct ieee80211_he_spr *he_spr;
1727 const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1728 const struct ieee80211_he_6ghz_capa *he_6ghz_capa;
1729 const u8 *uora_element;
1730 const u8 *mesh_id;
1731 const u8 *peering;
1732 const __le16 *awake_window;
1733 const u8 *preq;
1734 const u8 *prep;
1735 const u8 *perr;
1736 const struct ieee80211_rann_ie *rann;
1737 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1738 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1739 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1740 const u8 *max_channel_switch_time;
1741 const u8 *country_elem;
1742 const u8 *pwr_constr_elem;
1743 const u8 *cisco_dtpc_elem;
1744 const struct ieee80211_timeout_interval_ie *timeout_int;
1745 const u8 *opmode_notif;
1746 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1747 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1748 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1749 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
1750 const struct ieee80211_bssid_index *bssid_index;
1751 u8 max_bssid_indicator;
1752 u8 dtim_count;
1753 u8 dtim_period;
1754 const struct ieee80211_addba_ext_ie *addba_ext_ie;
1755 const struct ieee80211_s1g_cap *s1g_capab;
1756 const struct ieee80211_s1g_oper_ie *s1g_oper;
1757 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat;
1758 const struct ieee80211_aid_response_ie *aid_resp;
1759 const struct ieee80211_eht_cap_elem *eht_cap;
1760 const struct ieee80211_eht_operation *eht_operation;
1761 const struct ieee80211_multi_link_elem *ml_basic;
1762 const struct ieee80211_multi_link_elem *ml_reconf;
1763 const struct ieee80211_multi_link_elem *ml_epcs;
1764 const struct ieee80211_bandwidth_indication *bandwidth_indication;
1765 const struct ieee80211_ttlm_elem *ttlm[IEEE80211_TTLM_MAX_CNT];
1766
1767 /* not the order in the psd values is per element, not per chandef */
1768 struct ieee80211_parsed_tpe tpe;
1769 struct ieee80211_parsed_tpe csa_tpe;
1770
1771 /* length of them, respectively */
1772 u8 ext_capab_len;
1773 u8 ssid_len;
1774 u8 supp_rates_len;
1775 u8 tim_len;
1776 u8 rsn_len;
1777 u8 rsnx_len;
1778 u8 ext_supp_rates_len;
1779 u8 wmm_info_len;
1780 u8 wmm_param_len;
1781 u8 he_cap_len;
1782 u8 mesh_id_len;
1783 u8 peering_len;
1784 u8 preq_len;
1785 u8 prep_len;
1786 u8 perr_len;
1787 u8 country_elem_len;
1788 u8 bssid_index_len;
1789 u8 eht_cap_len;
1790
1791 /* mult-link element can be de-fragmented and thus u8 is not sufficient */
1792 size_t ml_basic_len;
1793 size_t ml_reconf_len;
1794 size_t ml_epcs_len;
1795
1796 u8 ttlm_num;
1797
1798 /*
1799 * store the per station profile pointer and length in case that the
1800 * parsing also handled Multi-Link element parsing for a specific link
1801 * ID.
1802 */
1803 struct ieee80211_mle_per_sta_profile *prof;
1804 size_t sta_prof_len;
1805
1806 /* whether/which parse error occurred while retrieving these elements */
1807 u8 parse_error;
1808 };
1809
hw_to_local(struct ieee80211_hw * hw)1810 static inline struct ieee80211_local *hw_to_local(
1811 struct ieee80211_hw *hw)
1812 {
1813 return container_of(hw, struct ieee80211_local, hw);
1814 }
1815
to_txq_info(struct ieee80211_txq * txq)1816 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1817 {
1818 return container_of(txq, struct txq_info, txq);
1819 }
1820
txq_has_queue(struct ieee80211_txq * txq)1821 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1822 {
1823 struct txq_info *txqi = to_txq_info(txq);
1824
1825 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1826 }
1827
1828 static inline bool
ieee80211_have_rx_timestamp(struct ieee80211_rx_status * status)1829 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1830 {
1831 return status->flag & RX_FLAG_MACTIME;
1832 }
1833
1834 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1835 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1836
1837 void ieee80211_vif_block_queues_csa(struct ieee80211_sub_if_data *sdata);
1838 void ieee80211_vif_unblock_queues_csa(struct ieee80211_sub_if_data *sdata);
1839
1840 /* This function returns the number of multicast stations connected to this
1841 * interface. It returns -1 if that number is not tracked, that is for netdevs
1842 * not in AP or AP_VLAN mode or when using 4addr.
1843 */
1844 static inline int
ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data * sdata)1845 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1846 {
1847 if (sdata->vif.type == NL80211_IFTYPE_AP)
1848 return atomic_read(&sdata->u.ap.num_mcast_sta);
1849 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1850 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1851 return -1;
1852 }
1853
1854 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1855 struct ieee80211_rx_status *status,
1856 unsigned int mpdu_len,
1857 unsigned int mpdu_offset);
1858 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1859 int ieee80211_hw_conf_chan(struct ieee80211_local *local);
1860 void ieee80211_hw_conf_init(struct ieee80211_local *local);
1861 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1862 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1863 u64 changed);
1864 void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata,
1865 u64 changed);
1866 void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata,
1867 struct ieee80211_link_data *link,
1868 u64 changed);
1869 void ieee80211_configure_filter(struct ieee80211_local *local);
1870 u64 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1871
1872 void ieee80211_handle_queued_frames(struct ieee80211_local *local);
1873
1874 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1875 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1876 u64 *cookie, gfp_t gfp);
1877
1878 void ieee80211_check_fast_rx(struct sta_info *sta);
1879 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1880 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1881 void ieee80211_clear_fast_rx(struct sta_info *sta);
1882
1883 bool ieee80211_is_our_addr(struct ieee80211_sub_if_data *sdata,
1884 const u8 *addr, int *out_link_id);
1885
1886 /* STA code */
1887 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1888 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1889 struct cfg80211_auth_request *req);
1890 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1891 struct cfg80211_assoc_request *req);
1892 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1893 struct cfg80211_deauth_request *req);
1894 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1895 struct cfg80211_disassoc_request *req);
1896 void ieee80211_send_pspoll(struct ieee80211_local *local,
1897 struct ieee80211_sub_if_data *sdata);
1898 void ieee80211_recalc_ps(struct ieee80211_local *local);
1899 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1900 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1901 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1902 struct sk_buff *skb);
1903 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
1904 struct sk_buff *skb);
1905 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1906 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1907 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1908 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1909 __le16 fc, bool acked);
1910 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1911 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1912 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1913 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
1914 u8 reason, bool tx);
1915 void ieee80211_mgd_setup_link(struct ieee80211_link_data *link);
1916 void ieee80211_mgd_stop_link(struct ieee80211_link_data *link);
1917 void ieee80211_mgd_set_link_qos_params(struct ieee80211_link_data *link);
1918
1919 /* IBSS code */
1920 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1921 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1922 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1923 const u8 *bssid, const u8 *addr, u32 supp_rates);
1924 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1925 struct cfg80211_ibss_params *params);
1926 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1927 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1928 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1929 struct sk_buff *skb);
1930 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1931 struct cfg80211_csa_settings *csa_settings,
1932 u64 *changed);
1933 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata,
1934 u64 *changed);
1935 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1936
1937 /* OCB code */
1938 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1939 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1940 const u8 *bssid, const u8 *addr, u32 supp_rates);
1941 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1942 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1943 struct ocb_setup *setup);
1944 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1945
1946 /* mesh code */
1947 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1948 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1949 struct sk_buff *skb);
1950 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1951 struct cfg80211_csa_settings *csa_settings,
1952 u64 *changed);
1953 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata,
1954 u64 *changed);
1955
1956 /* scan/BSS handling */
1957 void ieee80211_scan_work(struct wiphy *wiphy, struct wiphy_work *work);
1958 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1959 const u8 *ssid, u8 ssid_len,
1960 struct ieee80211_channel **channels,
1961 unsigned int n_channels);
1962 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1963 struct cfg80211_scan_request *req);
1964 void ieee80211_scan_cancel(struct ieee80211_local *local);
1965 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1966 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1967
1968 void ieee80211_inform_bss(struct wiphy *wiphy, struct cfg80211_bss *bss,
1969 const struct cfg80211_bss_ies *ies, void *data);
1970
1971 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1972 struct ieee80211_bss *
1973 ieee80211_bss_info_update(struct ieee80211_local *local,
1974 struct ieee80211_rx_status *rx_status,
1975 struct ieee80211_mgmt *mgmt,
1976 size_t len,
1977 struct ieee80211_channel *channel);
1978 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1979 struct ieee80211_bss *bss);
1980
1981 /* scheduled scan handling */
1982 int
1983 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1984 struct cfg80211_sched_scan_request *req);
1985 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1986 struct cfg80211_sched_scan_request *req);
1987 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1988 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1989 void ieee80211_sched_scan_stopped_work(struct wiphy *wiphy,
1990 struct wiphy_work *work);
1991
1992 /* off-channel/mgmt-tx */
1993 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1994 void ieee80211_offchannel_return(struct ieee80211_local *local);
1995 void ieee80211_roc_setup(struct ieee80211_local *local);
1996 void ieee80211_start_next_roc(struct ieee80211_local *local);
1997 void ieee80211_reconfig_roc(struct ieee80211_local *local);
1998 void ieee80211_roc_purge(struct ieee80211_local *local,
1999 struct ieee80211_sub_if_data *sdata);
2000 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
2001 struct ieee80211_channel *chan,
2002 unsigned int duration, u64 *cookie);
2003 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2004 struct wireless_dev *wdev, u64 cookie);
2005 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
2006 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
2007 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2008 struct wireless_dev *wdev, u64 cookie);
2009
2010 /* channel switch handling */
2011 void ieee80211_csa_finalize_work(struct wiphy *wiphy, struct wiphy_work *work);
2012 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2013 struct cfg80211_csa_settings *params);
2014
2015 /* color change handling */
2016 void ieee80211_color_change_finalize_work(struct wiphy *wiphy,
2017 struct wiphy_work *work);
2018 void ieee80211_color_collision_detection_work(struct wiphy *wiphy,
2019 struct wiphy_work *work);
2020
2021 /* interface handling */
2022 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
2023 NETIF_F_HW_CSUM | NETIF_F_SG | \
2024 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE | \
2025 NETIF_F_HW_TC)
2026 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM)
2027 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \
2028 MAC80211_SUPPORTED_FEATURES_RX)
2029
2030 int ieee80211_iface_init(void);
2031 void ieee80211_iface_exit(void);
2032 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
2033 unsigned char name_assign_type,
2034 struct wireless_dev **new_wdev, enum nl80211_iftype type,
2035 struct vif_params *params);
2036 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
2037 enum nl80211_iftype type);
2038 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
2039 void ieee80211_remove_interfaces(struct ieee80211_local *local);
2040 u32 ieee80211_idle_off(struct ieee80211_local *local);
2041 void ieee80211_recalc_idle(struct ieee80211_local *local);
2042 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
2043 const int offset);
2044 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
2045 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
2046 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
2047 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
2048
2049 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
2050 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
2051 bool update_bss);
2052 void ieee80211_recalc_offload(struct ieee80211_local *local);
2053
ieee80211_sdata_running(struct ieee80211_sub_if_data * sdata)2054 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
2055 {
2056 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
2057 }
2058
2059 /* link handling */
2060 void ieee80211_link_setup(struct ieee80211_link_data *link);
2061 void ieee80211_link_init(struct ieee80211_sub_if_data *sdata,
2062 int link_id,
2063 struct ieee80211_link_data *link,
2064 struct ieee80211_bss_conf *link_conf);
2065 void ieee80211_link_stop(struct ieee80211_link_data *link);
2066 int ieee80211_vif_set_links(struct ieee80211_sub_if_data *sdata,
2067 u16 new_links, u16 dormant_links);
ieee80211_vif_clear_links(struct ieee80211_sub_if_data * sdata)2068 static inline void ieee80211_vif_clear_links(struct ieee80211_sub_if_data *sdata)
2069 {
2070 ieee80211_vif_set_links(sdata, 0, 0);
2071 }
2072
2073 void ieee80211_apvlan_link_setup(struct ieee80211_sub_if_data *sdata);
2074 void ieee80211_apvlan_link_clear(struct ieee80211_sub_if_data *sdata);
2075
2076 /* tx handling */
2077 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
2078 void ieee80211_tx_pending(struct tasklet_struct *t);
2079 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
2080 struct net_device *dev);
2081 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
2082 struct net_device *dev);
2083 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb,
2084 struct net_device *dev);
2085 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
2086 struct net_device *dev,
2087 u32 info_flags,
2088 u32 ctrl_flags,
2089 u64 *cookie);
2090 struct sk_buff *
2091 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
2092 struct sk_buff *skb, u32 info_flags);
2093 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
2094 int retry_count, bool send_to_cooked,
2095 struct ieee80211_tx_status *status);
2096
2097 void ieee80211_check_fast_xmit(struct sta_info *sta);
2098 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
2099 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
2100 void ieee80211_clear_fast_xmit(struct sta_info *sta);
2101 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
2102 const u8 *buf, size_t len,
2103 const u8 *dest, __be16 proto, bool unencrypted,
2104 int link_id, u64 *cookie);
2105 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
2106 const u8 *buf, size_t len);
2107 void __ieee80211_xmit_fast(struct ieee80211_sub_if_data *sdata,
2108 struct sta_info *sta,
2109 struct ieee80211_fast_tx *fast_tx,
2110 struct sk_buff *skb, bool ampdu,
2111 const u8 *da, const u8 *sa);
2112 void ieee80211_aggr_check(struct ieee80211_sub_if_data *sdata,
2113 struct sta_info *sta, struct sk_buff *skb);
2114
2115 /* HT */
2116 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
2117 struct ieee80211_sta_ht_cap *ht_cap);
2118 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
2119 struct ieee80211_supported_band *sband,
2120 const struct ieee80211_ht_cap *ht_cap_ie,
2121 struct link_sta_info *link_sta);
2122 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
2123 const u8 *da, u16 tid,
2124 u16 initiator, u16 reason_code);
2125 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
2126 enum ieee80211_smps_mode smps, const u8 *da,
2127 const u8 *bssid, int link_id);
2128 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
2129 enum ieee80211_smps_mode smps_mode_new);
2130
2131 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
2132 u16 initiator, u16 reason, bool stop);
2133 void __ieee80211_start_rx_ba_session(struct sta_info *sta,
2134 u8 dialog_token, u16 timeout,
2135 u16 start_seq_num, u16 ba_policy, u16 tid,
2136 u16 buf_size, bool tx, bool auto_seq,
2137 const struct ieee80211_addba_ext_ie *addbaext);
2138 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
2139 enum ieee80211_agg_stop_reason reason);
2140 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
2141 struct sta_info *sta,
2142 struct ieee80211_mgmt *mgmt, size_t len);
2143 void ieee80211_process_addba_resp(struct ieee80211_local *local,
2144 struct sta_info *sta,
2145 struct ieee80211_mgmt *mgmt,
2146 size_t len);
2147 void ieee80211_process_addba_request(struct ieee80211_local *local,
2148 struct sta_info *sta,
2149 struct ieee80211_mgmt *mgmt,
2150 size_t len);
2151
2152 static inline struct ieee80211_mgmt *
ieee80211_mgmt_ba(struct sk_buff * skb,const u8 * da,struct ieee80211_sub_if_data * sdata)2153 ieee80211_mgmt_ba(struct sk_buff *skb, const u8 *da,
2154 struct ieee80211_sub_if_data *sdata)
2155 {
2156 struct ieee80211_mgmt *mgmt = skb_put_zero(skb, 24);
2157
2158 ether_addr_copy(mgmt->da, da);
2159 ether_addr_copy(mgmt->sa, sdata->vif.addr);
2160
2161 if (sdata->vif.type == NL80211_IFTYPE_AP ||
2162 sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
2163 sdata->vif.type == NL80211_IFTYPE_MESH_POINT)
2164 ether_addr_copy(mgmt->bssid, sdata->vif.addr);
2165 else if (sdata->vif.type == NL80211_IFTYPE_STATION)
2166 ether_addr_copy(mgmt->bssid, sdata->vif.cfg.ap_addr);
2167 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
2168 ether_addr_copy(mgmt->bssid, sdata->u.ibss.bssid);
2169
2170 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2171 IEEE80211_STYPE_ACTION);
2172 return mgmt;
2173 }
2174
2175 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2176 enum ieee80211_agg_stop_reason reason);
2177 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
2178 struct tid_ampdu_tx *tid_tx);
2179 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
2180 struct tid_ampdu_tx *tid_tx);
2181 void ieee80211_ba_session_work(struct wiphy *wiphy, struct wiphy_work *work);
2182 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
2183 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
2184
2185 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
2186 enum nl80211_smps_mode
2187 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
2188
2189 /* VHT */
2190 void
2191 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
2192 struct ieee80211_supported_band *sband,
2193 const struct ieee80211_vht_cap *vht_cap_ie,
2194 const struct ieee80211_vht_cap *vht_cap_ie2,
2195 struct link_sta_info *link_sta);
2196 enum ieee80211_sta_rx_bandwidth
2197 _ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta,
2198 struct cfg80211_chan_def *chandef);
2199 static inline enum ieee80211_sta_rx_bandwidth
ieee80211_sta_cap_rx_bw(struct link_sta_info * link_sta)2200 ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta)
2201 {
2202 return _ieee80211_sta_cap_rx_bw(link_sta, NULL);
2203 }
2204 enum ieee80211_sta_rx_bandwidth
2205 _ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta,
2206 struct cfg80211_chan_def *chandef);
2207 static inline enum ieee80211_sta_rx_bandwidth
ieee80211_sta_cur_vht_bw(struct link_sta_info * link_sta)2208 ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta)
2209 {
2210 return _ieee80211_sta_cur_vht_bw(link_sta, NULL);
2211 }
2212 void ieee80211_sta_init_nss(struct link_sta_info *link_sta);
2213 enum ieee80211_sta_rx_bandwidth
2214 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
2215 enum nl80211_chan_width
2216 ieee80211_sta_cap_chan_bw(struct link_sta_info *link_sta);
2217 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
2218 struct ieee80211_link_data *link,
2219 struct ieee80211_mgmt *mgmt);
2220 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2221 struct link_sta_info *sta,
2222 u8 opmode, enum nl80211_band band);
2223 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2224 struct link_sta_info *sta,
2225 u8 opmode, enum nl80211_band band);
2226 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
2227 struct ieee80211_sta_vht_cap *vht_cap);
2228 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
2229 u16 vht_mask[NL80211_VHT_NSS_MAX]);
2230 enum nl80211_chan_width
2231 ieee80211_sta_rx_bw_to_chan_width(struct link_sta_info *sta);
2232
2233 /* HE */
2234 void
2235 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
2236 struct ieee80211_supported_band *sband,
2237 const u8 *he_cap_ie, u8 he_cap_len,
2238 const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
2239 struct link_sta_info *link_sta);
2240 void
2241 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
2242 const struct ieee80211_he_spr *he_spr_ie_elem);
2243
2244 void
2245 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
2246 const struct ieee80211_he_operation *he_op_ie_elem);
2247
2248 /* S1G */
2249 void ieee80211_s1g_sta_rate_init(struct sta_info *sta);
2250 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb);
2251 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata,
2252 struct sk_buff *skb);
2253 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata,
2254 struct sk_buff *skb);
2255
2256 /* Spectrum management */
2257 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
2258 struct ieee80211_mgmt *mgmt,
2259 size_t len);
2260 /**
2261 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
2262 * @sdata: the sdata of the interface which has received the frame
2263 * @elems: parsed 802.11 elements received with the frame
2264 * @current_band: indicates the current band
2265 * @vht_cap_info: VHT capabilities of the transmitter
2266 * @conn: contains information about own capabilities and restrictions
2267 * to decide which channel switch announcements can be accepted
2268 * @bssid: the currently connected bssid (for reporting)
2269 * @unprot_action: whether the frame was an unprotected frame or not,
2270 * used for reporting
2271 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
2272 * All of them will be filled with if success only.
2273 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
2274 */
2275 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
2276 struct ieee802_11_elems *elems,
2277 enum nl80211_band current_band,
2278 u32 vht_cap_info,
2279 struct ieee80211_conn_settings *conn,
2280 u8 *bssid, bool unprot_action,
2281 struct ieee80211_csa_ie *csa_ie);
2282
2283 /* Suspend/resume and hw reconfiguration */
2284 int ieee80211_reconfig(struct ieee80211_local *local);
2285 void ieee80211_stop_device(struct ieee80211_local *local, bool suspend);
2286
2287 int __ieee80211_suspend(struct ieee80211_hw *hw,
2288 struct cfg80211_wowlan *wowlan);
2289
__ieee80211_resume(struct ieee80211_hw * hw)2290 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
2291 {
2292 struct ieee80211_local *local = hw_to_local(hw);
2293
2294 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
2295 !test_bit(SCAN_COMPLETED, &local->scanning),
2296 "%s: resume with hardware scan still in progress\n",
2297 wiphy_name(hw->wiphy));
2298
2299 return ieee80211_reconfig(hw_to_local(hw));
2300 }
2301
2302 /* utility functions/constants */
2303 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
2304 const char *ieee80211_conn_mode_str(enum ieee80211_conn_mode mode);
2305 enum ieee80211_conn_bw_limit
2306 ieee80211_min_bw_limit_from_chandef(struct cfg80211_chan_def *chandef);
2307 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
2308 int rate, int erp, int short_preamble);
2309 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
2310 struct ieee80211_tx_queue_params *qparam,
2311 int ac);
2312 void ieee80211_clear_tpe(struct ieee80211_parsed_tpe *tpe);
2313 void ieee80211_set_wmm_default(struct ieee80211_link_data *link,
2314 bool bss_notify, bool enable_qos);
2315 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
2316 struct sta_info *sta, struct sk_buff *skb);
2317
2318 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2319 struct sk_buff *skb, int tid, int link_id,
2320 enum nl80211_band band);
2321
2322 /* sta_out needs to be checked for ERR_PTR() before using */
2323 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata,
2324 struct sk_buff *skb,
2325 struct sta_info **sta_out);
2326
2327 static inline void
ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid,enum nl80211_band band)2328 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2329 struct sk_buff *skb, int tid,
2330 enum nl80211_band band)
2331 {
2332 rcu_read_lock();
2333 __ieee80211_tx_skb_tid_band(sdata, skb, tid, -1, band);
2334 rcu_read_unlock();
2335 }
2336
2337 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
2338 struct sk_buff *skb, int tid, int link_id);
2339
ieee80211_tx_skb(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb)2340 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
2341 struct sk_buff *skb)
2342 {
2343 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
2344 ieee80211_tx_skb_tid(sdata, skb, 7, -1);
2345 }
2346
2347 /**
2348 * struct ieee80211_elems_parse_params - element parsing parameters
2349 * @mode: connection mode for parsing
2350 * @start: pointer to the elements
2351 * @len: length of the elements
2352 * @action: %true if the elements came from an action frame
2353 * @filter: bitmap of element IDs to filter out while calculating
2354 * the element CRC
2355 * @crc: CRC starting value
2356 * @bss: the BSS to parse this as, for multi-BSSID cases this can
2357 * represent a non-transmitting BSS in which case the data
2358 * for that non-transmitting BSS is returned
2359 * @link_id: the link ID to parse elements for, if a STA profile
2360 * is present in the multi-link element, or -1 to ignore;
2361 * note that the code currently assumes parsing an association
2362 * (or re-association) response frame if this is given
2363 * @from_ap: frame is received from an AP (currently used only
2364 * for EHT capabilities parsing)
2365 */
2366 struct ieee80211_elems_parse_params {
2367 enum ieee80211_conn_mode mode;
2368 const u8 *start;
2369 size_t len;
2370 bool action;
2371 u64 filter;
2372 u32 crc;
2373 struct cfg80211_bss *bss;
2374 int link_id;
2375 bool from_ap;
2376 };
2377
2378 struct ieee802_11_elems *
2379 ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params);
2380
2381 static inline struct ieee802_11_elems *
ieee802_11_parse_elems_crc(const u8 * start,size_t len,bool action,u64 filter,u32 crc,struct cfg80211_bss * bss)2382 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
2383 u64 filter, u32 crc,
2384 struct cfg80211_bss *bss)
2385 {
2386 struct ieee80211_elems_parse_params params = {
2387 .mode = IEEE80211_CONN_MODE_HIGHEST,
2388 .start = start,
2389 .len = len,
2390 .action = action,
2391 .filter = filter,
2392 .crc = crc,
2393 .bss = bss,
2394 .link_id = -1,
2395 };
2396
2397 return ieee802_11_parse_elems_full(¶ms);
2398 }
2399
2400 static inline struct ieee802_11_elems *
ieee802_11_parse_elems(const u8 * start,size_t len,bool action,struct cfg80211_bss * bss)2401 ieee802_11_parse_elems(const u8 *start, size_t len, bool action,
2402 struct cfg80211_bss *bss)
2403 {
2404 return ieee802_11_parse_elems_crc(start, len, action, 0, 0, bss);
2405 }
2406
2407 extern const int ieee802_1d_to_ac[8];
2408
ieee80211_ac_from_tid(int tid)2409 static inline int ieee80211_ac_from_tid(int tid)
2410 {
2411 return ieee802_1d_to_ac[tid & 7];
2412 }
2413
2414 void ieee80211_dynamic_ps_enable_work(struct wiphy *wiphy,
2415 struct wiphy_work *work);
2416 void ieee80211_dynamic_ps_disable_work(struct wiphy *wiphy,
2417 struct wiphy_work *work);
2418 void ieee80211_dynamic_ps_timer(struct timer_list *t);
2419 void ieee80211_send_nullfunc(struct ieee80211_local *local,
2420 struct ieee80211_sub_if_data *sdata,
2421 bool powersave);
2422 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
2423 struct ieee80211_sub_if_data *sdata);
2424 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2425 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
2426 unsigned int
2427 ieee80211_get_vif_queues(struct ieee80211_local *local,
2428 struct ieee80211_sub_if_data *sdata);
2429 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
2430 unsigned long queues,
2431 enum queue_stop_reason reason,
2432 bool refcounted);
2433 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
2434 unsigned long queues,
2435 enum queue_stop_reason reason,
2436 bool refcounted);
2437 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
2438 enum queue_stop_reason reason,
2439 bool refcounted);
2440 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
2441 enum queue_stop_reason reason,
2442 bool refcounted);
2443 static inline void
ieee80211_stop_vif_queues(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,enum queue_stop_reason reason)2444 ieee80211_stop_vif_queues(struct ieee80211_local *local,
2445 struct ieee80211_sub_if_data *sdata,
2446 enum queue_stop_reason reason)
2447 {
2448 ieee80211_stop_queues_by_reason(&local->hw,
2449 ieee80211_get_vif_queues(local, sdata),
2450 reason, true);
2451 }
2452
2453 static inline void
ieee80211_wake_vif_queues(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,enum queue_stop_reason reason)2454 ieee80211_wake_vif_queues(struct ieee80211_local *local,
2455 struct ieee80211_sub_if_data *sdata,
2456 enum queue_stop_reason reason)
2457 {
2458 ieee80211_wake_queues_by_reason(&local->hw,
2459 ieee80211_get_vif_queues(local, sdata),
2460 reason, true);
2461 }
2462 static inline void
ieee80211_stop_vif_queues_norefcount(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,enum queue_stop_reason reason)2463 ieee80211_stop_vif_queues_norefcount(struct ieee80211_local *local,
2464 struct ieee80211_sub_if_data *sdata,
2465 enum queue_stop_reason reason)
2466 {
2467 ieee80211_stop_queues_by_reason(&local->hw,
2468 ieee80211_get_vif_queues(local, sdata),
2469 reason, false);
2470 }
2471 static inline void
ieee80211_wake_vif_queues_norefcount(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,enum queue_stop_reason reason)2472 ieee80211_wake_vif_queues_norefcount(struct ieee80211_local *local,
2473 struct ieee80211_sub_if_data *sdata,
2474 enum queue_stop_reason reason)
2475 {
2476 ieee80211_wake_queues_by_reason(&local->hw,
2477 ieee80211_get_vif_queues(local, sdata),
2478 reason, false);
2479 }
2480 void ieee80211_add_pending_skb(struct ieee80211_local *local,
2481 struct sk_buff *skb);
2482 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
2483 struct sk_buff_head *skbs);
2484 void ieee80211_flush_queues(struct ieee80211_local *local,
2485 struct ieee80211_sub_if_data *sdata, bool drop);
2486 void __ieee80211_flush_queues(struct ieee80211_local *local,
2487 struct ieee80211_sub_if_data *sdata,
2488 unsigned int queues, bool drop);
2489
ieee80211_can_run_worker(struct ieee80211_local * local)2490 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2491 {
2492 /*
2493 * It's unsafe to try to do any work during reconfigure flow.
2494 * When the flow ends the work will be requeued.
2495 */
2496 if (local->in_reconfig)
2497 return false;
2498
2499 /*
2500 * If quiescing is set, we are racing with __ieee80211_suspend.
2501 * __ieee80211_suspend flushes the workers after setting quiescing,
2502 * and we check quiescing / suspended before enqueing new workers.
2503 * We should abort the worker to avoid the races below.
2504 */
2505 if (local->quiescing)
2506 return false;
2507
2508 /*
2509 * We might already be suspended if the following scenario occurs:
2510 * __ieee80211_suspend Control path
2511 *
2512 * if (local->quiescing)
2513 * return;
2514 * local->quiescing = true;
2515 * flush_workqueue();
2516 * queue_work(...);
2517 * local->suspended = true;
2518 * local->quiescing = false;
2519 * worker starts running...
2520 */
2521 if (local->suspended)
2522 return false;
2523
2524 return true;
2525 }
2526
2527 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2528 void ieee80211_txq_set_params(struct ieee80211_local *local);
2529 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2530 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2531 struct sta_info *sta,
2532 struct txq_info *txq, int tid);
2533 void ieee80211_txq_purge(struct ieee80211_local *local,
2534 struct txq_info *txqi);
2535 void ieee80211_purge_sta_txqs(struct sta_info *sta);
2536 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2537 struct ieee80211_sub_if_data *sdata);
2538 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2539 struct txq_info *txqi);
2540 void ieee80211_wake_txqs(struct tasklet_struct *t);
2541 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2542 u16 transaction, u16 auth_alg, u16 status,
2543 const u8 *extra, size_t extra_len, const u8 *bssid,
2544 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2545 u32 tx_flags);
2546 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2547 const u8 *da, const u8 *bssid,
2548 u16 stype, u16 reason,
2549 bool send_frame, u8 *frame_buf);
2550
2551 enum {
2552 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
2553 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
2554 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
2555 };
2556
2557 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2558 size_t buffer_len,
2559 struct ieee80211_scan_ies *ie_desc,
2560 const u8 *ie, size_t ie_len,
2561 u8 bands_used, u32 *rate_masks,
2562 struct cfg80211_chan_def *chandef,
2563 u32 flags);
2564 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2565 const u8 *src, const u8 *dst,
2566 u32 ratemask,
2567 struct ieee80211_channel *chan,
2568 const u8 *ssid, size_t ssid_len,
2569 const u8 *ie, size_t ie_len,
2570 u32 flags);
2571 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2572 struct ieee802_11_elems *elems,
2573 enum nl80211_band band, u32 *basic_rates);
2574 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2575 struct ieee80211_link_data *link,
2576 enum ieee80211_smps_mode smps_mode);
2577 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata,
2578 struct ieee80211_link_data *link);
2579 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata,
2580 int link_id);
2581
2582 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2583 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2584 u16 cap);
2585 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2586 const struct cfg80211_chan_def *chandef,
2587 u16 prot_mode, bool rifs_mode);
2588 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2589 const struct cfg80211_chan_def *chandef);
2590 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2591 u32 cap);
2592 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2593 const struct cfg80211_chan_def *chandef);
2594 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata);
2595 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef);
2596 u8 *ieee80211_ie_build_eht_oper(u8 *pos, struct cfg80211_chan_def *chandef,
2597 const struct ieee80211_sta_eht_cap *eht_cap);
2598 int ieee80211_parse_bitrates(enum nl80211_chan_width width,
2599 const struct ieee80211_supported_band *sband,
2600 const u8 *srates, int srates_len, u32 *rates);
2601 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2602 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
2603 struct ieee80211_sta_s1g_cap *caps,
2604 struct sk_buff *skb);
2605 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
2606 struct sk_buff *skb);
2607
2608 /* element building in SKBs */
2609 int ieee80211_put_srates_elem(struct sk_buff *skb,
2610 const struct ieee80211_supported_band *sband,
2611 u32 basic_rates, u32 rate_flags, u32 masked_rates,
2612 u8 element_id);
2613 int ieee80211_put_he_cap(struct sk_buff *skb,
2614 struct ieee80211_sub_if_data *sdata,
2615 const struct ieee80211_supported_band *sband,
2616 const struct ieee80211_conn_settings *conn);
2617 int ieee80211_put_he_6ghz_cap(struct sk_buff *skb,
2618 struct ieee80211_sub_if_data *sdata,
2619 enum ieee80211_smps_mode smps_mode);
2620 int ieee80211_put_eht_cap(struct sk_buff *skb,
2621 struct ieee80211_sub_if_data *sdata,
2622 const struct ieee80211_supported_band *sband,
2623 const struct ieee80211_conn_settings *conn);
2624
2625 /* channel management */
2626 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2627 struct cfg80211_chan_def *chandef);
2628 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
2629 const struct ieee80211_vht_operation *oper,
2630 const struct ieee80211_ht_operation *htop,
2631 struct cfg80211_chan_def *chandef);
2632 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation_info *info,
2633 struct cfg80211_chan_def *chandef);
2634 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_local *local,
2635 const struct ieee80211_he_operation *he_oper,
2636 const struct ieee80211_eht_operation *eht_oper,
2637 struct cfg80211_chan_def *chandef);
2638 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
2639 struct cfg80211_chan_def *chandef);
2640 void ieee80211_chandef_downgrade(struct cfg80211_chan_def *chandef,
2641 struct ieee80211_conn_settings *conn);
2642 static inline void
ieee80211_chanreq_downgrade(struct ieee80211_chan_req * chanreq,struct ieee80211_conn_settings * conn)2643 ieee80211_chanreq_downgrade(struct ieee80211_chan_req *chanreq,
2644 struct ieee80211_conn_settings *conn)
2645 {
2646 ieee80211_chandef_downgrade(&chanreq->oper, conn);
2647 if (WARN_ON(!conn))
2648 return;
2649 if (conn->mode < IEEE80211_CONN_MODE_EHT)
2650 chanreq->ap.chan = NULL;
2651 }
2652
2653 bool ieee80211_chanreq_identical(const struct ieee80211_chan_req *a,
2654 const struct ieee80211_chan_req *b);
2655
2656 int __must_check
2657 _ieee80211_link_use_channel(struct ieee80211_link_data *link,
2658 const struct ieee80211_chan_req *req,
2659 enum ieee80211_chanctx_mode mode,
2660 bool assign_on_failure);
2661
2662 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)2663 ieee80211_link_use_channel(struct ieee80211_link_data *link,
2664 const struct ieee80211_chan_req *req,
2665 enum ieee80211_chanctx_mode mode)
2666 {
2667 return _ieee80211_link_use_channel(link, req, mode, false);
2668 }
2669
2670 int __must_check
2671 ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link,
2672 const struct ieee80211_chan_req *req,
2673 enum ieee80211_chanctx_mode mode,
2674 bool radar_required);
2675 int __must_check
2676 ieee80211_link_use_reserved_context(struct ieee80211_link_data *link);
2677 int ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link);
2678
2679 int __must_check
2680 ieee80211_link_change_chanreq(struct ieee80211_link_data *link,
2681 const struct ieee80211_chan_req *req,
2682 u64 *changed);
2683 void __ieee80211_link_release_channel(struct ieee80211_link_data *link,
2684 bool skip_idle_recalc);
2685 void ieee80211_link_release_channel(struct ieee80211_link_data *link);
2686 void ieee80211_link_vlan_copy_chanctx(struct ieee80211_link_data *link);
2687 void ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link,
2688 bool clear);
2689 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2690 struct ieee80211_chanctx *ctx);
2691
2692 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2693 struct ieee80211_chanctx *chanctx);
2694 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2695 struct ieee80211_chanctx *ctx,
2696 struct ieee80211_link_data *rsvd_for,
2697 bool check_reserved);
2698 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2699
2700 void ieee80211_dfs_cac_timer_work(struct wiphy *wiphy, struct wiphy_work *work);
2701 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local,
2702 struct ieee80211_chanctx *chanctx);
2703 void ieee80211_dfs_radar_detected_work(struct wiphy *wiphy,
2704 struct wiphy_work *work);
2705 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2706 struct cfg80211_csa_settings *csa_settings);
2707
2708 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2709 struct ieee80211_sub_if_data *sdata);
2710 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2711 const struct cfg80211_chan_def *chandef,
2712 enum ieee80211_chanctx_mode chanmode,
2713 u8 radar_detect, int radio_idx);
2714 int ieee80211_max_num_channels(struct ieee80211_local *local, int radio_idx);
2715 u32 ieee80211_get_radio_mask(struct wiphy *wiphy, struct net_device *dev);
2716 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2717 struct ieee80211_chanctx *ctx);
2718
2719 /* TDLS */
2720 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2721 const u8 *peer, int link_id,
2722 u8 action_code, u8 dialog_token, u16 status_code,
2723 u32 peer_capability, bool initiator,
2724 const u8 *extra_ies, size_t extra_ies_len);
2725 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2726 const u8 *peer, enum nl80211_tdls_operation oper);
2727 void ieee80211_tdls_peer_del_work(struct wiphy *wiphy, struct wiphy_work *wk);
2728 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2729 const u8 *addr, u8 oper_class,
2730 struct cfg80211_chan_def *chandef);
2731 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2732 struct net_device *dev,
2733 const u8 *addr);
2734 void ieee80211_teardown_tdls_peers(struct ieee80211_link_data *link);
2735 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2736 const u8 *peer, u16 reason);
2737 void
2738 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata,
2739 struct sk_buff *skb);
2740
2741
2742 const char *ieee80211_get_reason_code_string(u16 reason_code);
2743 u16 ieee80211_encode_usf(int val);
2744 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
2745 enum nl80211_iftype type);
2746
2747 extern const struct ethtool_ops ieee80211_ethtool_ops;
2748
2749 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw,
2750 struct ieee80211_vif *vif,
2751 struct ieee80211_sta *pubsta,
2752 int len, bool ampdu);
2753 #ifdef CONFIG_MAC80211_NOINLINE
2754 #define debug_noinline noinline
2755 #else
2756 #define debug_noinline
2757 #endif
2758
2759 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache);
2760 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache);
2761
2762 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata);
2763
2764 void
2765 ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata,
2766 struct ieee80211_supported_band *sband,
2767 const u8 *he_cap_ie, u8 he_cap_len,
2768 const struct ieee80211_eht_cap_elem *eht_cap_ie_elem,
2769 u8 eht_cap_len,
2770 struct link_sta_info *link_sta);
2771 void ieee80211_process_neg_ttlm_req(struct ieee80211_sub_if_data *sdata,
2772 struct ieee80211_mgmt *mgmt, size_t len);
2773 void ieee80211_process_neg_ttlm_res(struct ieee80211_sub_if_data *sdata,
2774 struct ieee80211_mgmt *mgmt, size_t len);
2775 int ieee80211_req_neg_ttlm(struct ieee80211_sub_if_data *sdata,
2776 struct cfg80211_ttlm_params *params);
2777
2778 void ieee80211_check_wbrf_support(struct ieee80211_local *local);
2779 void ieee80211_add_wbrf(struct ieee80211_local *local, struct cfg80211_chan_def *chandef);
2780 void ieee80211_remove_wbrf(struct ieee80211_local *local, struct cfg80211_chan_def *chandef);
2781
2782 #if IS_ENABLED(CONFIG_MAC80211_KUNIT_TEST)
2783 #define EXPORT_SYMBOL_IF_MAC80211_KUNIT(sym) EXPORT_SYMBOL_IF_KUNIT(sym)
2784 #define VISIBLE_IF_MAC80211_KUNIT
2785 ieee80211_rx_result
2786 ieee80211_drop_unencrypted_mgmt(struct ieee80211_rx_data *rx);
2787 int ieee80211_calc_chandef_subchan_offset(const struct cfg80211_chan_def *ap,
2788 u8 n_partial_subchans);
2789 void ieee80211_rearrange_tpe_psd(struct ieee80211_parsed_tpe_psd *psd,
2790 const struct cfg80211_chan_def *ap,
2791 const struct cfg80211_chan_def *used);
2792 #else
2793 #define EXPORT_SYMBOL_IF_MAC80211_KUNIT(sym)
2794 #define VISIBLE_IF_MAC80211_KUNIT static
2795 #endif
2796
2797 #endif /* IEEE80211_I_H */
2798