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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) 2018-2021 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 <net/ieee80211_radiotap.h>
29#include <net/cfg80211.h>
30#include <net/mac80211.h>
31#include <net/fq.h>
32#include "key.h"
33#include "sta_info.h"
34#include "debug.h"
35
36extern const struct cfg80211_ops mac80211_config_ops;
37
38struct ieee80211_local;
39
40/* Maximum number of broadcast/multicast frames to buffer when some of the
41 * associated stations are using power saving. */
42#define AP_MAX_BC_BUFFER 128
43
44/* Maximum number of frames buffered to all STAs, including multicast frames.
45 * Note: increasing this limit increases the potential memory requirement. Each
46 * frame can be up to about 2 kB long. */
47#define TOTAL_MAX_TX_BUFFER 512
48
49/* Required encryption head and tailroom */
50#define IEEE80211_ENCRYPT_HEADROOM 8
51#define IEEE80211_ENCRYPT_TAILROOM 18
52
53/* power level hasn't been configured (or set to automatic) */
54#define IEEE80211_UNSET_POWER_LEVEL INT_MIN
55
56/*
57 * Some APs experience problems when working with U-APSD. Decreasing the
58 * probability of that happening by using legacy mode for all ACs but VO isn't
59 * enough.
60 *
61 * Cisco 4410N originally forced us to enable VO by default only because it
62 * treated non-VO ACs as legacy.
63 *
64 * However some APs (notably Netgear R7000) silently reclassify packets to
65 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
66 * clients would never see some frames (e.g. ARP responses) or would fetch them
67 * accidentally after a long time.
68 *
69 * It makes little sense to enable u-APSD queues by default because it needs
70 * userspace applications to be aware of it to actually take advantage of the
71 * possible additional powersavings. Implicitly depending on driver autotrigger
72 * frame support doesn't make much sense.
73 */
74#define IEEE80211_DEFAULT_UAPSD_QUEUES 0
75
76#define IEEE80211_DEFAULT_MAX_SP_LEN \
77 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
78
79extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS];
80
81#define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
82
83#define IEEE80211_MAX_NAN_INSTANCE_ID 255
84
85struct ieee80211_bss {
86 u32 device_ts_beacon, device_ts_presp;
87
88 bool wmm_used;
89 bool uapsd_supported;
90
91#define IEEE80211_MAX_SUPP_RATES 32
92 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
93 size_t supp_rates_len;
94 struct ieee80211_rate *beacon_rate;
95
96 u32 vht_cap_info;
97
98 /*
99 * During association, we save an ERP value from a probe response so
100 * that we can feed ERP info to the driver when handling the
101 * association completes. these fields probably won't be up-to-date
102 * otherwise, you probably don't want to use them.
103 */
104 bool has_erp_value;
105 u8 erp_value;
106
107 /* Keep track of the corruption of the last beacon/probe response. */
108 u8 corrupt_data;
109
110 /* Keep track of what bits of information we have valid info for. */
111 u8 valid_data;
112};
113
114/**
115 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
116 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
117 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
118 *
119 * These are bss flags that are attached to a bss in the
120 * @corrupt_data field of &struct ieee80211_bss.
121 */
122enum ieee80211_bss_corrupt_data_flags {
123 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
124 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
125};
126
127/**
128 * enum ieee80211_valid_data_flags - BSS valid data flags
129 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
130 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
131 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
132 *
133 * These are bss flags that are attached to a bss in the
134 * @valid_data field of &struct ieee80211_bss. They show which parts
135 * of the data structure were received as a result of an un-corrupted
136 * beacon/probe response.
137 */
138enum ieee80211_bss_valid_data_flags {
139 IEEE80211_BSS_VALID_WMM = BIT(1),
140 IEEE80211_BSS_VALID_RATES = BIT(2),
141 IEEE80211_BSS_VALID_ERP = BIT(3)
142};
143
144typedef unsigned __bitwise ieee80211_tx_result;
145#define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
146#define TX_DROP ((__force ieee80211_tx_result) 1u)
147#define TX_QUEUED ((__force ieee80211_tx_result) 2u)
148
149#define IEEE80211_TX_UNICAST BIT(1)
150#define IEEE80211_TX_PS_BUFFERED BIT(2)
151
152struct ieee80211_tx_data {
153 struct sk_buff *skb;
154 struct sk_buff_head skbs;
155 struct ieee80211_local *local;
156 struct ieee80211_sub_if_data *sdata;
157 struct sta_info *sta;
158 struct ieee80211_key *key;
159 struct ieee80211_tx_rate rate;
160
161 unsigned int flags;
162};
163
164
165typedef unsigned __bitwise ieee80211_rx_result;
166#define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
167#define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
168#define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
169#define RX_QUEUED ((__force ieee80211_rx_result) 3u)
170
171/**
172 * enum ieee80211_packet_rx_flags - packet RX flags
173 * @IEEE80211_RX_AMSDU: a-MSDU packet
174 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
175 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
176 *
177 * These are per-frame flags that are attached to a frame in the
178 * @rx_flags field of &struct ieee80211_rx_status.
179 */
180enum ieee80211_packet_rx_flags {
181 IEEE80211_RX_AMSDU = BIT(3),
182 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
183 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
184};
185
186/**
187 * enum ieee80211_rx_flags - RX data flags
188 *
189 * @IEEE80211_RX_CMNTR: received on cooked monitor already
190 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
191 * to cfg80211_report_obss_beacon().
192 *
193 * These flags are used across handling multiple interfaces
194 * for a single frame.
195 */
196enum ieee80211_rx_flags {
197 IEEE80211_RX_CMNTR = BIT(0),
198 IEEE80211_RX_BEACON_REPORTED = BIT(1),
199};
200
201struct ieee80211_rx_data {
202 struct list_head *list;
203 struct sk_buff *skb;
204 struct ieee80211_local *local;
205 struct ieee80211_sub_if_data *sdata;
206 struct sta_info *sta;
207 struct ieee80211_key *key;
208
209 unsigned int flags;
210
211 /*
212 * Index into sequence numbers array, 0..16
213 * since the last (16) is used for non-QoS,
214 * will be 16 on non-QoS frames.
215 */
216 int seqno_idx;
217
218 /*
219 * Index into the security IV/PN arrays, 0..16
220 * since the last (16) is used for CCMP-encrypted
221 * management frames, will be set to 16 on mgmt
222 * frames and 0 on non-QoS frames.
223 */
224 int security_idx;
225
226 union {
227 struct {
228 u32 iv32;
229 u16 iv16;
230 } tkip;
231 struct {
232 u8 pn[IEEE80211_CCMP_PN_LEN];
233 } ccm_gcm;
234 };
235};
236
237struct ieee80211_csa_settings {
238 const u16 *counter_offsets_beacon;
239 const u16 *counter_offsets_presp;
240
241 int n_counter_offsets_beacon;
242 int n_counter_offsets_presp;
243
244 u8 count;
245};
246
247struct beacon_data {
248 u8 *head, *tail;
249 int head_len, tail_len;
250 struct ieee80211_meshconf_ie *meshconf;
251 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
252 u8 cntdwn_current_counter;
253 struct rcu_head rcu_head;
254};
255
256struct probe_resp {
257 struct rcu_head rcu_head;
258 int len;
259 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
260 u8 data[];
261};
262
263struct fils_discovery_data {
264 struct rcu_head rcu_head;
265 int len;
266 u8 data[];
267};
268
269struct unsol_bcast_probe_resp_data {
270 struct rcu_head rcu_head;
271 int len;
272 u8 data[];
273};
274
275struct ps_data {
276 /* yes, this looks ugly, but guarantees that we can later use
277 * bitmap_empty :)
278 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
279 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
280 __aligned(__alignof__(unsigned long));
281 struct sk_buff_head bc_buf;
282 atomic_t num_sta_ps; /* number of stations in PS mode */
283 int dtim_count;
284 bool dtim_bc_mc;
285};
286
287struct ieee80211_if_ap {
288 struct beacon_data __rcu *beacon;
289 struct probe_resp __rcu *probe_resp;
290 struct fils_discovery_data __rcu *fils_discovery;
291 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp;
292
293 /* to be used after channel switch. */
294 struct cfg80211_beacon_data *next_beacon;
295 struct list_head vlans; /* write-protected with RTNL and local->mtx */
296
297 struct ps_data ps;
298 atomic_t num_mcast_sta; /* number of stations receiving multicast */
299
300 bool multicast_to_unicast;
301};
302
303struct ieee80211_if_vlan {
304 struct list_head list; /* write-protected with RTNL and local->mtx */
305
306 /* used for all tx if the VLAN is configured to 4-addr mode */
307 struct sta_info __rcu *sta;
308 atomic_t num_mcast_sta; /* number of stations receiving multicast */
309};
310
311struct mesh_stats {
312 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
313 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
314 __u32 fwded_frames; /* Mesh total forwarded frames */
315 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
316 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
317 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
318};
319
320#define PREQ_Q_F_START 0x1
321#define PREQ_Q_F_REFRESH 0x2
322struct mesh_preq_queue {
323 struct list_head list;
324 u8 dst[ETH_ALEN];
325 u8 flags;
326};
327
328struct ieee80211_roc_work {
329 struct list_head list;
330
331 struct ieee80211_sub_if_data *sdata;
332
333 struct ieee80211_channel *chan;
334
335 bool started, abort, hw_begun, notified;
336 bool on_channel;
337
338 unsigned long start_time;
339
340 u32 duration, req_duration;
341 struct sk_buff *frame;
342 u64 cookie, mgmt_tx_cookie;
343 enum ieee80211_roc_type type;
344};
345
346/* flags used in struct ieee80211_if_managed.flags */
347enum ieee80211_sta_flags {
348 IEEE80211_STA_CONNECTION_POLL = BIT(1),
349 IEEE80211_STA_CONTROL_PORT = BIT(2),
350 IEEE80211_STA_DISABLE_HT = BIT(4),
351 IEEE80211_STA_MFP_ENABLED = BIT(6),
352 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
353 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
354 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
355 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
356 IEEE80211_STA_DISABLE_VHT = BIT(11),
357 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
358 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
359 IEEE80211_STA_DISABLE_WMM = BIT(14),
360 IEEE80211_STA_ENABLE_RRM = BIT(15),
361 IEEE80211_STA_DISABLE_HE = BIT(16),
362};
363
364struct ieee80211_mgd_auth_data {
365 struct cfg80211_bss *bss;
366 unsigned long timeout;
367 int tries;
368 u16 algorithm, expected_transaction;
369
370 u8 key[WLAN_KEY_LEN_WEP104];
371 u8 key_len, key_idx;
372 bool done;
373 bool peer_confirmed;
374 bool timeout_started;
375
376 u16 sae_trans, sae_status;
377 size_t data_len;
378 u8 data[];
379};
380
381struct ieee80211_mgd_assoc_data {
382 struct cfg80211_bss *bss;
383 const u8 *supp_rates;
384
385 unsigned long timeout;
386 int tries;
387
388 u16 capability;
389 u8 prev_bssid[ETH_ALEN];
390 u8 ssid[IEEE80211_MAX_SSID_LEN];
391 u8 ssid_len;
392 u8 supp_rates_len;
393 bool wmm, uapsd;
394 bool need_beacon;
395 bool synced;
396 bool timeout_started;
397
398 u8 ap_ht_param;
399
400 struct ieee80211_vht_cap ap_vht_cap;
401
402 u8 fils_nonces[2 * FILS_NONCE_LEN];
403 u8 fils_kek[FILS_MAX_KEK_LEN];
404 size_t fils_kek_len;
405
406 size_t ie_len;
407 u8 ie[];
408};
409
410struct ieee80211_sta_tx_tspec {
411 /* timestamp of the first packet in the time slice */
412 unsigned long time_slice_start;
413
414 u32 admitted_time; /* in usecs, unlike over the air */
415 u8 tsid;
416 s8 up; /* signed to be able to invalidate with -1 during teardown */
417
418 /* consumed TX time in microseconds in the time slice */
419 u32 consumed_tx_time;
420 enum {
421 TX_TSPEC_ACTION_NONE = 0,
422 TX_TSPEC_ACTION_DOWNGRADE,
423 TX_TSPEC_ACTION_STOP_DOWNGRADE,
424 } action;
425 bool downgraded;
426};
427
428DECLARE_EWMA(beacon_signal, 4, 4)
429
430struct ieee80211_if_managed {
431 struct timer_list timer;
432 struct timer_list conn_mon_timer;
433 struct timer_list bcn_mon_timer;
434 struct timer_list chswitch_timer;
435 struct work_struct monitor_work;
436 struct work_struct chswitch_work;
437 struct work_struct beacon_connection_loss_work;
438 struct work_struct csa_connection_drop_work;
439
440 unsigned long beacon_timeout;
441 unsigned long probe_timeout;
442 int probe_send_count;
443 bool nullfunc_failed;
444 u8 connection_loss:1,
445 driver_disconnect:1,
446 reconnect:1;
447
448 struct cfg80211_bss *associated;
449 struct ieee80211_mgd_auth_data *auth_data;
450 struct ieee80211_mgd_assoc_data *assoc_data;
451
452 u8 bssid[ETH_ALEN] __aligned(2);
453
454 bool powersave; /* powersave requested for this iface */
455 bool broken_ap; /* AP is broken -- turn off powersave */
456 bool have_beacon;
457 u8 dtim_period;
458 enum ieee80211_smps_mode req_smps, /* requested smps mode */
459 driver_smps_mode; /* smps mode request */
460
461 struct work_struct request_smps_work;
462
463 unsigned int flags;
464
465 bool csa_waiting_bcn;
466 bool csa_ignored_same_chan;
467
468 bool beacon_crc_valid;
469 u32 beacon_crc;
470
471 bool status_acked;
472 bool status_received;
473 __le16 status_fc;
474
475 enum {
476 IEEE80211_MFP_DISABLED,
477 IEEE80211_MFP_OPTIONAL,
478 IEEE80211_MFP_REQUIRED
479 } mfp; /* management frame protection */
480
481 /*
482 * Bitmask of enabled u-apsd queues,
483 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
484 * to take effect.
485 */
486 unsigned int uapsd_queues;
487
488 /*
489 * Maximum number of buffered frames AP can deliver during a
490 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
491 * Needs a new association to take effect.
492 */
493 unsigned int uapsd_max_sp_len;
494
495 int wmm_last_param_set;
496 int mu_edca_last_param_set;
497
498 u8 use_4addr;
499
500 s16 p2p_noa_index;
501
502 struct ewma_beacon_signal ave_beacon_signal;
503
504 /*
505 * Number of Beacon frames used in ave_beacon_signal. This can be used
506 * to avoid generating less reliable cqm events that would be based
507 * only on couple of received frames.
508 */
509 unsigned int count_beacon_signal;
510
511 /* Number of times beacon loss was invoked. */
512 unsigned int beacon_loss_count;
513
514 /*
515 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
516 * that triggered a cqm event. 0 indicates that no event has been
517 * generated for the current association.
518 */
519 int last_cqm_event_signal;
520
521 /*
522 * State variables for keeping track of RSSI of the AP currently
523 * connected to and informing driver when RSSI has gone
524 * below/above a certain threshold.
525 */
526 int rssi_min_thold, rssi_max_thold;
527 int last_ave_beacon_signal;
528
529 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
530 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
531 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
532 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
533 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */
534 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */
535
536 /* TDLS support */
537 u8 tdls_peer[ETH_ALEN] __aligned(2);
538 struct delayed_work tdls_peer_del_work;
539 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
540 struct sk_buff *teardown_skb; /* A copy to send through the AP */
541 spinlock_t teardown_lock; /* To lock changing teardown_skb */
542 bool tdls_chan_switch_prohibited;
543 bool tdls_wider_bw_prohibited;
544
545 /* WMM-AC TSPEC support */
546 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
547 /* Use a separate work struct so that we can do something here
548 * while the sdata->work is flushing the queues, for example.
549 * otherwise, in scenarios where we hardly get any traffic out
550 * on the BE queue, but there's a lot of VO traffic, we might
551 * get stuck in a downgraded situation and flush takes forever.
552 */
553 struct delayed_work tx_tspec_wk;
554
555 /* Information elements from the last transmitted (Re)Association
556 * Request frame.
557 */
558 u8 *assoc_req_ies;
559 size_t assoc_req_ies_len;
560};
561
562struct ieee80211_if_ibss {
563 struct timer_list timer;
564 struct work_struct csa_connection_drop_work;
565
566 unsigned long last_scan_completed;
567
568 u32 basic_rates;
569
570 bool fixed_bssid;
571 bool fixed_channel;
572 bool privacy;
573
574 bool control_port;
575 bool userspace_handles_dfs;
576
577 u8 bssid[ETH_ALEN] __aligned(2);
578 u8 ssid[IEEE80211_MAX_SSID_LEN];
579 u8 ssid_len, ie_len;
580 u8 *ie;
581 struct cfg80211_chan_def chandef;
582
583 unsigned long ibss_join_req;
584 /* probe response/beacon for IBSS */
585 struct beacon_data __rcu *presp;
586
587 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
588 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
589
590 spinlock_t incomplete_lock;
591 struct list_head incomplete_stations;
592
593 enum {
594 IEEE80211_IBSS_MLME_SEARCH,
595 IEEE80211_IBSS_MLME_JOINED,
596 } state;
597};
598
599/**
600 * struct ieee80211_if_ocb - OCB mode state
601 *
602 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
603 * @wrkq_flags: OCB deferred task action
604 * @incomplete_lock: delayed STA insertion lock
605 * @incomplete_stations: list of STAs waiting for delayed insertion
606 * @joined: indication if the interface is connected to an OCB network
607 */
608struct ieee80211_if_ocb {
609 struct timer_list housekeeping_timer;
610 unsigned long wrkq_flags;
611
612 spinlock_t incomplete_lock;
613 struct list_head incomplete_stations;
614
615 bool joined;
616};
617
618/**
619 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
620 *
621 * these declarations define the interface, which enables
622 * vendor-specific mesh synchronization
623 *
624 */
625struct ieee802_11_elems;
626struct ieee80211_mesh_sync_ops {
627 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
628 u16 stype,
629 struct ieee80211_mgmt *mgmt,
630 struct ieee802_11_elems *elems,
631 struct ieee80211_rx_status *rx_status);
632
633 /* should be called with beacon_data under RCU read lock */
634 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
635 struct beacon_data *beacon);
636 /* add other framework functions here */
637};
638
639struct mesh_csa_settings {
640 struct rcu_head rcu_head;
641 struct cfg80211_csa_settings settings;
642};
643
644struct ieee80211_if_mesh {
645 struct timer_list housekeeping_timer;
646 struct timer_list mesh_path_timer;
647 struct timer_list mesh_path_root_timer;
648
649 unsigned long wrkq_flags;
650 unsigned long mbss_changed;
651
652 bool userspace_handles_dfs;
653
654 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
655 size_t mesh_id_len;
656 /* Active Path Selection Protocol Identifier */
657 u8 mesh_pp_id;
658 /* Active Path Selection Metric Identifier */
659 u8 mesh_pm_id;
660 /* Congestion Control Mode Identifier */
661 u8 mesh_cc_id;
662 /* Synchronization Protocol Identifier */
663 u8 mesh_sp_id;
664 /* Authentication Protocol Identifier */
665 u8 mesh_auth_id;
666 /* Local mesh Sequence Number */
667 u32 sn;
668 /* Last used PREQ ID */
669 u32 preq_id;
670 atomic_t mpaths;
671 /* Timestamp of last SN update */
672 unsigned long last_sn_update;
673 /* Time when it's ok to send next PERR */
674 unsigned long next_perr;
675 /* Timestamp of last PREQ sent */
676 unsigned long last_preq;
677 struct mesh_rmc *rmc;
678 spinlock_t mesh_preq_queue_lock;
679 struct mesh_preq_queue preq_queue;
680 int preq_queue_len;
681 struct mesh_stats mshstats;
682 struct mesh_config mshcfg;
683 atomic_t estab_plinks;
684 u32 mesh_seqnum;
685 bool accepting_plinks;
686 int num_gates;
687 struct beacon_data __rcu *beacon;
688 const u8 *ie;
689 u8 ie_len;
690 enum {
691 IEEE80211_MESH_SEC_NONE = 0x0,
692 IEEE80211_MESH_SEC_AUTHED = 0x1,
693 IEEE80211_MESH_SEC_SECURED = 0x2,
694 } security;
695 bool user_mpm;
696 /* Extensible Synchronization Framework */
697 const struct ieee80211_mesh_sync_ops *sync_ops;
698 s64 sync_offset_clockdrift_max;
699 spinlock_t sync_offset_lock;
700 /* mesh power save */
701 enum nl80211_mesh_power_mode nonpeer_pm;
702 int ps_peers_light_sleep;
703 int ps_peers_deep_sleep;
704 struct ps_data ps;
705 /* Channel Switching Support */
706 struct mesh_csa_settings __rcu *csa;
707 enum {
708 IEEE80211_MESH_CSA_ROLE_NONE,
709 IEEE80211_MESH_CSA_ROLE_INIT,
710 IEEE80211_MESH_CSA_ROLE_REPEATER,
711 } csa_role;
712 u8 chsw_ttl;
713 u16 pre_value;
714
715 /* offset from skb->data while building IE */
716 int meshconf_offset;
717
718 struct mesh_table *mesh_paths;
719 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */
720 int mesh_paths_generation;
721 int mpp_paths_generation;
722};
723
724#ifdef CONFIG_MAC80211_MESH
725#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
726 do { (msh)->mshstats.name++; } while (0)
727#else
728#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
729 do { } while (0)
730#endif
731
732/**
733 * enum ieee80211_sub_if_data_flags - virtual interface flags
734 *
735 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
736 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
737 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
738 * associated stations and deliver multicast frames both
739 * back to wireless media and to the local net stack.
740 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
741 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
742 */
743enum ieee80211_sub_if_data_flags {
744 IEEE80211_SDATA_ALLMULTI = BIT(0),
745 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
746 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
747 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
748 IEEE80211_SDATA_IN_DRIVER = BIT(5),
749};
750
751/**
752 * enum ieee80211_sdata_state_bits - virtual interface state bits
753 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
754 * mirrors netif_running() but is separate for interface type
755 * change handling while the interface is up
756 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
757 * mode, so queues are stopped
758 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
759 * to offchannel, reset when offchannel returns
760 */
761enum ieee80211_sdata_state_bits {
762 SDATA_STATE_RUNNING,
763 SDATA_STATE_OFFCHANNEL,
764 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
765};
766
767/**
768 * enum ieee80211_chanctx_mode - channel context configuration mode
769 *
770 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
771 * multiple interfaces
772 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
773 * only by a single interface. This can be used for example for
774 * non-fixed channel IBSS.
775 */
776enum ieee80211_chanctx_mode {
777 IEEE80211_CHANCTX_SHARED,
778 IEEE80211_CHANCTX_EXCLUSIVE
779};
780
781/**
782 * enum ieee80211_chanctx_replace_state - channel context replacement state
783 *
784 * This is used for channel context in-place reservations that require channel
785 * context switch/swap.
786 *
787 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
788 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
789 * by a (not yet registered) channel context pointed by %replace_ctx.
790 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
791 * replaces an existing channel context pointed to by %replace_ctx.
792 */
793enum ieee80211_chanctx_replace_state {
794 IEEE80211_CHANCTX_REPLACE_NONE,
795 IEEE80211_CHANCTX_WILL_BE_REPLACED,
796 IEEE80211_CHANCTX_REPLACES_OTHER,
797};
798
799struct ieee80211_chanctx {
800 struct list_head list;
801 struct rcu_head rcu_head;
802
803 struct list_head assigned_vifs;
804 struct list_head reserved_vifs;
805
806 enum ieee80211_chanctx_replace_state replace_state;
807 struct ieee80211_chanctx *replace_ctx;
808
809 enum ieee80211_chanctx_mode mode;
810 bool driver_present;
811
812 struct ieee80211_chanctx_conf conf;
813};
814
815struct mac80211_qos_map {
816 struct cfg80211_qos_map qos_map;
817 struct rcu_head rcu_head;
818};
819
820enum txq_info_flags {
821 IEEE80211_TXQ_STOP,
822 IEEE80211_TXQ_AMPDU,
823 IEEE80211_TXQ_NO_AMSDU,
824 IEEE80211_TXQ_STOP_NETIF_TX,
825};
826
827/**
828 * struct txq_info - per tid queue
829 *
830 * @tin: contains packets split into multiple flows
831 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
832 * a fq_flow which is already owned by a different tin
833 * @def_cvars: codel vars for @def_flow
834 * @schedule_order: used with ieee80211_local->active_txqs
835 * @frags: used to keep fragments created after dequeue
836 */
837struct txq_info {
838 struct fq_tin tin;
839 struct codel_vars def_cvars;
840 struct codel_stats cstats;
841 struct rb_node schedule_order;
842
843 struct sk_buff_head frags;
844 unsigned long flags;
845
846 /* keep last! */
847 struct ieee80211_txq txq;
848};
849
850struct ieee80211_if_mntr {
851 u32 flags;
852 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
853
854 struct list_head list;
855};
856
857/**
858 * struct ieee80211_if_nan - NAN state
859 *
860 * @conf: current NAN configuration
861 * @func_ids: a bitmap of available instance_id's
862 */
863struct ieee80211_if_nan {
864 struct cfg80211_nan_conf conf;
865
866 /* protects function_inst_ids */
867 spinlock_t func_lock;
868 struct idr function_inst_ids;
869};
870
871struct ieee80211_sub_if_data {
872 struct list_head list;
873
874 struct wireless_dev wdev;
875
876 /* keys */
877 struct list_head key_list;
878
879 /* count for keys needing tailroom space allocation */
880 int crypto_tx_tailroom_needed_cnt;
881 int crypto_tx_tailroom_pending_dec;
882 struct delayed_work dec_tailroom_needed_wk;
883
884 struct net_device *dev;
885 struct ieee80211_local *local;
886
887 unsigned int flags;
888
889 unsigned long state;
890
891 char name[IFNAMSIZ];
892
893 struct ieee80211_fragment_cache frags;
894
895 /* TID bitmap for NoAck policy */
896 u16 noack_map;
897
898 /* bit field of ACM bits (BIT(802.1D tag)) */
899 u8 wmm_acm;
900
901 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS +
902 NUM_DEFAULT_MGMT_KEYS +
903 NUM_DEFAULT_BEACON_KEYS];
904 struct ieee80211_key __rcu *default_unicast_key;
905 struct ieee80211_key __rcu *default_multicast_key;
906 struct ieee80211_key __rcu *default_mgmt_key;
907 struct ieee80211_key __rcu *default_beacon_key;
908
909 u16 sequence_number;
910 __be16 control_port_protocol;
911 bool control_port_no_encrypt;
912 bool control_port_no_preauth;
913 bool control_port_over_nl80211;
914 int encrypt_headroom;
915
916 atomic_t num_tx_queued;
917 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
918 struct mac80211_qos_map __rcu *qos_map;
919
920 struct airtime_info airtime[IEEE80211_NUM_ACS];
921
922 struct work_struct csa_finalize_work;
923 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
924 struct cfg80211_chan_def csa_chandef;
925
926 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
927 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
928
929 /* context reservation -- protected with chanctx_mtx */
930 struct ieee80211_chanctx *reserved_chanctx;
931 struct cfg80211_chan_def reserved_chandef;
932 bool reserved_radar_required;
933 bool reserved_ready;
934
935 /* used to reconfigure hardware SM PS */
936 struct work_struct recalc_smps;
937
938 struct work_struct work;
939 struct sk_buff_head skb_queue;
940
941 u8 needed_rx_chains;
942 enum ieee80211_smps_mode smps_mode;
943
944 int user_power_level; /* in dBm */
945 int ap_power_level; /* in dBm */
946
947 bool radar_required;
948 struct delayed_work dfs_cac_timer_work;
949
950 /*
951 * AP this belongs to: self in AP mode and
952 * corresponding AP in VLAN mode, NULL for
953 * all others (might be needed later in IBSS)
954 */
955 struct ieee80211_if_ap *bss;
956
957 /* bitmap of allowed (non-MCS) rate indexes for rate control */
958 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
959
960 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
961 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
962
963 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
964 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
965
966 /* Beacon frame (non-MCS) rate (as a bitmap) */
967 u32 beacon_rateidx_mask[NUM_NL80211_BANDS];
968 bool beacon_rate_set;
969
970 union {
971 struct ieee80211_if_ap ap;
972 struct ieee80211_if_vlan vlan;
973 struct ieee80211_if_managed mgd;
974 struct ieee80211_if_ibss ibss;
975 struct ieee80211_if_mesh mesh;
976 struct ieee80211_if_ocb ocb;
977 struct ieee80211_if_mntr mntr;
978 struct ieee80211_if_nan nan;
979 } u;
980
981#ifdef CONFIG_MAC80211_DEBUGFS
982 struct {
983 struct dentry *subdir_stations;
984 struct dentry *default_unicast_key;
985 struct dentry *default_multicast_key;
986 struct dentry *default_mgmt_key;
987 struct dentry *default_beacon_key;
988 } debugfs;
989#endif
990
991 /* must be last, dynamically sized area in this! */
992 struct ieee80211_vif vif;
993};
994
995static inline
996struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
997{
998 return container_of(p, struct ieee80211_sub_if_data, vif);
999}
1000
1001static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
1002 __acquires(&sdata->wdev.mtx)
1003{
1004 mutex_lock(&sdata->wdev.mtx);
1005 __acquire(&sdata->wdev.mtx);
1006}
1007
1008static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
1009 __releases(&sdata->wdev.mtx)
1010{
1011 mutex_unlock(&sdata->wdev.mtx);
1012 __release(&sdata->wdev.mtx);
1013}
1014
1015#define sdata_dereference(p, sdata) \
1016 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
1017
1018static inline void
1019sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
1020{
1021 lockdep_assert_held(&sdata->wdev.mtx);
1022}
1023
1024static inline int
1025ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1026{
1027 switch (chandef->width) {
1028 case NL80211_CHAN_WIDTH_5:
1029 return 2;
1030 case NL80211_CHAN_WIDTH_10:
1031 return 1;
1032 default:
1033 return 0;
1034 }
1035}
1036
1037static inline int
1038ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1039{
1040 struct ieee80211_chanctx_conf *chanctx_conf;
1041 int shift = 0;
1042
1043 rcu_read_lock();
1044 chanctx_conf = rcu_dereference(vif->chanctx_conf);
1045 if (chanctx_conf)
1046 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1047 rcu_read_unlock();
1048
1049 return shift;
1050}
1051
1052enum {
1053 IEEE80211_RX_MSG = 1,
1054 IEEE80211_TX_STATUS_MSG = 2,
1055};
1056
1057enum queue_stop_reason {
1058 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1059 IEEE80211_QUEUE_STOP_REASON_PS,
1060 IEEE80211_QUEUE_STOP_REASON_CSA,
1061 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1062 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1063 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1064 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1065 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1066 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1067 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1068 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE,
1069
1070 IEEE80211_QUEUE_STOP_REASONS,
1071};
1072
1073#ifdef CONFIG_MAC80211_LEDS
1074struct tpt_led_trigger {
1075 char name[32];
1076 const struct ieee80211_tpt_blink *blink_table;
1077 unsigned int blink_table_len;
1078 struct timer_list timer;
1079 struct ieee80211_local *local;
1080 unsigned long prev_traffic;
1081 unsigned long tx_bytes, rx_bytes;
1082 unsigned int active, want;
1083 bool running;
1084};
1085#endif
1086
1087/**
1088 * mac80211 scan flags - currently active scan mode
1089 *
1090 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1091 * well be on the operating channel
1092 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1093 * determine if we are on the operating channel or not
1094 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1095 * channel. This should not interrupt normal traffic.
1096 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1097 * that the scan completed.
1098 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1099 * a scan complete for an aborted scan.
1100 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1101 * cancelled.
1102 */
1103enum {
1104 SCAN_SW_SCANNING,
1105 SCAN_HW_SCANNING,
1106 SCAN_ONCHANNEL_SCANNING,
1107 SCAN_COMPLETED,
1108 SCAN_ABORTED,
1109 SCAN_HW_CANCELLED,
1110};
1111
1112/**
1113 * enum mac80211_scan_state - scan state machine states
1114 *
1115 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1116 * determines if we should keep on scanning or switch back to the
1117 * operating channel
1118 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1119 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1120 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1121 * send out data
1122 * @SCAN_RESUME: Resume the scan and scan the next channel
1123 * @SCAN_ABORT: Abort the scan and go back to operating channel
1124 */
1125enum mac80211_scan_state {
1126 SCAN_DECISION,
1127 SCAN_SET_CHANNEL,
1128 SCAN_SEND_PROBE,
1129 SCAN_SUSPEND,
1130 SCAN_RESUME,
1131 SCAN_ABORT,
1132};
1133
1134/**
1135 * struct airtime_sched_info - state used for airtime scheduling and AQL
1136 *
1137 * @lock: spinlock that protects all the fields in this struct
1138 * @active_txqs: rbtree of currently backlogged queues, sorted by virtual time
1139 * @schedule_pos: the current position maintained while a driver walks the tree
1140 * with ieee80211_next_txq()
1141 * @active_list: list of struct airtime_info structs that were active within
1142 * the last AIRTIME_ACTIVE_DURATION (100 ms), used to compute
1143 * weight_sum
1144 * @last_weight_update: used for rate limiting walking active_list
1145 * @last_schedule_time: tracks the last time a transmission was scheduled; used
1146 * for catching up v_t if no stations are eligible for
1147 * transmission.
1148 * @v_t: global virtual time; queues with v_t < this are eligible for
1149 * transmission
1150 * @weight_sum: total sum of all active stations used for dividing airtime
1151 * @weight_sum_reciprocal: reciprocal of weight_sum (to avoid divisions in fast
1152 * path - see comment above
1153 * IEEE80211_RECIPROCAL_DIVISOR_64)
1154 * @aql_txq_limit_low: AQL limit when total outstanding airtime
1155 * is < IEEE80211_AQL_THRESHOLD
1156 * @aql_txq_limit_high: AQL limit when total outstanding airtime
1157 * is > IEEE80211_AQL_THRESHOLD
1158 */
1159struct airtime_sched_info {
1160 spinlock_t lock;
1161 struct rb_root_cached active_txqs;
1162 struct rb_node *schedule_pos;
1163 struct list_head active_list;
1164 u64 last_weight_update;
1165 u64 last_schedule_activity;
1166 u64 v_t;
1167 u64 weight_sum;
1168 u64 weight_sum_reciprocal;
1169 u32 aql_txq_limit_low;
1170 u32 aql_txq_limit_high;
1171};
1172DECLARE_STATIC_KEY_FALSE(aql_disable);
1173
1174struct ieee80211_local {
1175 /* embed the driver visible part.
1176 * don't cast (use the static inlines below), but we keep
1177 * it first anyway so they become a no-op */
1178 struct ieee80211_hw hw;
1179
1180 struct fq fq;
1181 struct codel_vars *cvars;
1182 struct codel_params cparams;
1183
1184 /* protects active_txqs and txqi->schedule_order */
1185 struct airtime_sched_info airtime[IEEE80211_NUM_ACS];
1186 u16 airtime_flags;
1187 u32 aql_threshold;
1188 atomic_t aql_total_pending_airtime;
1189
1190 const struct ieee80211_ops *ops;
1191
1192 /*
1193 * private workqueue to mac80211. mac80211 makes this accessible
1194 * via ieee80211_queue_work()
1195 */
1196 struct workqueue_struct *workqueue;
1197
1198 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1199 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1200 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1201 spinlock_t queue_stop_reason_lock;
1202
1203 int open_count;
1204 int monitors, cooked_mntrs;
1205 /* number of interfaces with corresponding FIF_ flags */
1206 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1207 fif_probe_req;
1208 bool probe_req_reg;
1209 bool rx_mcast_action_reg;
1210 unsigned int filter_flags; /* FIF_* */
1211
1212 bool wiphy_ciphers_allocated;
1213
1214 bool use_chanctx;
1215
1216 /* protects the aggregated multicast list and filter calls */
1217 spinlock_t filter_lock;
1218
1219 /* used for uploading changed mc list */
1220 struct work_struct reconfig_filter;
1221
1222 /* aggregated multicast list */
1223 struct netdev_hw_addr_list mc_list;
1224
1225 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1226
1227 /*
1228 * suspended is true if we finished all the suspend _and_ we have
1229 * not yet come up from resume. This is to be used by mac80211
1230 * to ensure driver sanity during suspend and mac80211's own
1231 * sanity. It can eventually be used for WoW as well.
1232 */
1233 bool suspended;
1234
1235 /*
1236 * Resuming is true while suspended, but when we're reprogramming the
1237 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1238 * again even though some other parts of the stack are still suspended
1239 * and we still drop received frames to avoid waking the stack.
1240 */
1241 bool resuming;
1242
1243 /*
1244 * quiescing is true during the suspend process _only_ to
1245 * ease timer cancelling etc.
1246 */
1247 bool quiescing;
1248
1249 /* device is started */
1250 bool started;
1251
1252 /* device is during a HW reconfig */
1253 bool in_reconfig;
1254
1255 /* wowlan is enabled -- don't reconfig on resume */
1256 bool wowlan;
1257
1258 struct work_struct radar_detected_work;
1259
1260 /* number of RX chains the hardware has */
1261 u8 rx_chains;
1262
1263 /* bitmap of which sbands were copied */
1264 u8 sband_allocated;
1265
1266 int tx_headroom; /* required headroom for hardware/radiotap */
1267
1268 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1269 * added to skb_queue will be processed, but frames in
1270 * skb_queue_unreliable may be dropped if the total length of these
1271 * queues increases over the limit. */
1272#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1273 struct tasklet_struct tasklet;
1274 struct sk_buff_head skb_queue;
1275 struct sk_buff_head skb_queue_unreliable;
1276
1277 spinlock_t rx_path_lock;
1278
1279 /* Station data */
1280 /*
1281 * The mutex only protects the list, hash table and
1282 * counter, reads are done with RCU.
1283 */
1284 struct mutex sta_mtx;
1285 spinlock_t tim_lock;
1286 unsigned long num_sta;
1287 struct list_head sta_list;
1288 struct rhltable sta_hash;
1289 struct timer_list sta_cleanup;
1290 int sta_generation;
1291
1292 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1293 struct tasklet_struct tx_pending_tasklet;
1294 struct tasklet_struct wake_txqs_tasklet;
1295
1296 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1297
1298 /* number of interfaces with allmulti RX */
1299 atomic_t iff_allmultis;
1300
1301 struct rate_control_ref *rate_ctrl;
1302
1303 struct arc4_ctx wep_tx_ctx;
1304 struct arc4_ctx wep_rx_ctx;
1305 u32 wep_iv;
1306
1307 /* see iface.c */
1308 struct list_head interfaces;
1309 struct list_head mon_list; /* only that are IFF_UP && !cooked */
1310 struct mutex iflist_mtx;
1311
1312 /*
1313 * Key mutex, protects sdata's key_list and sta_info's
1314 * key pointers and ptk_idx (write access, they're RCU.)
1315 */
1316 struct mutex key_mtx;
1317
1318 /* mutex for scan and work locking */
1319 struct mutex mtx;
1320
1321 /* Scanning and BSS list */
1322 unsigned long scanning;
1323 struct cfg80211_ssid scan_ssid;
1324 struct cfg80211_scan_request *int_scan_req;
1325 struct cfg80211_scan_request __rcu *scan_req;
1326 struct ieee80211_scan_request *hw_scan_req;
1327 struct cfg80211_chan_def scan_chandef;
1328 enum nl80211_band hw_scan_band;
1329 int scan_channel_idx;
1330 int scan_ies_len;
1331 int hw_scan_ies_bufsize;
1332 struct cfg80211_scan_info scan_info;
1333
1334 struct work_struct sched_scan_stopped_work;
1335 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1336 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1337 u8 scan_addr[ETH_ALEN];
1338
1339 unsigned long leave_oper_channel_time;
1340 enum mac80211_scan_state next_scan_state;
1341 struct delayed_work scan_work;
1342 struct ieee80211_sub_if_data __rcu *scan_sdata;
1343 /* For backward compatibility only -- do not use */
1344 struct cfg80211_chan_def _oper_chandef;
1345
1346 /* Temporary remain-on-channel for off-channel operations */
1347 struct ieee80211_channel *tmp_channel;
1348
1349 /* channel contexts */
1350 struct list_head chanctx_list;
1351 struct mutex chanctx_mtx;
1352
1353#ifdef CONFIG_MAC80211_LEDS
1354 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1355 struct led_trigger tpt_led;
1356 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1357 atomic_t radio_led_active, tpt_led_active;
1358 struct tpt_led_trigger *tpt_led_trigger;
1359#endif
1360
1361#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1362 /* SNMP counters */
1363 /* dot11CountersTable */
1364 u32 dot11TransmittedFragmentCount;
1365 u32 dot11MulticastTransmittedFrameCount;
1366 u32 dot11FailedCount;
1367 u32 dot11RetryCount;
1368 u32 dot11MultipleRetryCount;
1369 u32 dot11FrameDuplicateCount;
1370 u32 dot11ReceivedFragmentCount;
1371 u32 dot11MulticastReceivedFrameCount;
1372 u32 dot11TransmittedFrameCount;
1373
1374 /* TX/RX handler statistics */
1375 unsigned int tx_handlers_drop;
1376 unsigned int tx_handlers_queued;
1377 unsigned int tx_handlers_drop_wep;
1378 unsigned int tx_handlers_drop_not_assoc;
1379 unsigned int tx_handlers_drop_unauth_port;
1380 unsigned int rx_handlers_drop;
1381 unsigned int rx_handlers_queued;
1382 unsigned int rx_handlers_drop_nullfunc;
1383 unsigned int rx_handlers_drop_defrag;
1384 unsigned int tx_expand_skb_head;
1385 unsigned int tx_expand_skb_head_cloned;
1386 unsigned int rx_expand_skb_head_defrag;
1387 unsigned int rx_handlers_fragments;
1388 unsigned int tx_status_drop;
1389#define I802_DEBUG_INC(c) (c)++
1390#else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1391#define I802_DEBUG_INC(c) do { } while (0)
1392#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1393
1394
1395 int total_ps_buffered; /* total number of all buffered unicast and
1396 * multicast packets for power saving stations
1397 */
1398
1399 bool pspolling;
1400 /*
1401 * PS can only be enabled when we have exactly one managed
1402 * interface (and monitors) in PS, this then points there.
1403 */
1404 struct ieee80211_sub_if_data *ps_sdata;
1405 struct work_struct dynamic_ps_enable_work;
1406 struct work_struct dynamic_ps_disable_work;
1407 struct timer_list dynamic_ps_timer;
1408 struct notifier_block ifa_notifier;
1409 struct notifier_block ifa6_notifier;
1410
1411 /*
1412 * The dynamic ps timeout configured from user space via WEXT -
1413 * this will override whatever chosen by mac80211 internally.
1414 */
1415 int dynamic_ps_forced_timeout;
1416
1417 int user_power_level; /* in dBm, for all interfaces */
1418
1419 enum ieee80211_smps_mode smps_mode;
1420
1421 struct work_struct restart_work;
1422
1423#ifdef CONFIG_MAC80211_DEBUGFS
1424 struct local_debugfsdentries {
1425 struct dentry *rcdir;
1426 struct dentry *keys;
1427 } debugfs;
1428 bool force_tx_status;
1429#endif
1430
1431 /*
1432 * Remain-on-channel support
1433 */
1434 struct delayed_work roc_work;
1435 struct list_head roc_list;
1436 struct work_struct hw_roc_start, hw_roc_done;
1437 unsigned long hw_roc_start_time;
1438 u64 roc_cookie_counter;
1439
1440 struct idr ack_status_frames;
1441 spinlock_t ack_status_lock;
1442
1443 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1444
1445 /* virtual monitor interface */
1446 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1447 struct cfg80211_chan_def monitor_chandef;
1448
1449 /* extended capabilities provided by mac80211 */
1450 u8 ext_capa[8];
1451};
1452
1453static inline struct ieee80211_sub_if_data *
1454IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1455{
1456 return netdev_priv(dev);
1457}
1458
1459static inline struct ieee80211_sub_if_data *
1460IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1461{
1462 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1463}
1464
1465static inline struct ieee80211_supported_band *
1466ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1467{
1468 struct ieee80211_local *local = sdata->local;
1469 struct ieee80211_chanctx_conf *chanctx_conf;
1470 enum nl80211_band band;
1471
1472 rcu_read_lock();
1473 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1474
1475 if (!chanctx_conf) {
1476 rcu_read_unlock();
1477 return NULL;
1478 }
1479
1480 band = chanctx_conf->def.chan->band;
1481 rcu_read_unlock();
1482
1483 return local->hw.wiphy->bands[band];
1484}
1485
1486/* this struct holds the value parsing from channel switch IE */
1487struct ieee80211_csa_ie {
1488 struct cfg80211_chan_def chandef;
1489 u8 mode;
1490 u8 count;
1491 u8 ttl;
1492 u16 pre_value;
1493 u16 reason_code;
1494 u32 max_switch_time;
1495};
1496
1497/* Parsed Information Elements */
1498struct ieee802_11_elems {
1499 const u8 *ie_start;
1500 size_t total_len;
1501
1502 /* pointers to IEs */
1503 const struct ieee80211_tdls_lnkie *lnk_id;
1504 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1505 const u8 *ext_capab;
1506 const u8 *ssid;
1507 const u8 *supp_rates;
1508 const u8 *ds_params;
1509 const struct ieee80211_tim_ie *tim;
1510 const u8 *challenge;
1511 const u8 *rsn;
1512 const u8 *rsnx;
1513 const u8 *erp_info;
1514 const u8 *ext_supp_rates;
1515 const u8 *wmm_info;
1516 const u8 *wmm_param;
1517 const struct ieee80211_ht_cap *ht_cap_elem;
1518 const struct ieee80211_ht_operation *ht_operation;
1519 const struct ieee80211_vht_cap *vht_cap_elem;
1520 const struct ieee80211_vht_operation *vht_operation;
1521 const struct ieee80211_meshconf_ie *mesh_config;
1522 const u8 *he_cap;
1523 const struct ieee80211_he_operation *he_operation;
1524 const struct ieee80211_he_spr *he_spr;
1525 const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1526 const struct ieee80211_he_6ghz_capa *he_6ghz_capa;
1527 const u8 *uora_element;
1528 const u8 *mesh_id;
1529 const u8 *peering;
1530 const __le16 *awake_window;
1531 const u8 *preq;
1532 const u8 *prep;
1533 const u8 *perr;
1534 const struct ieee80211_rann_ie *rann;
1535 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1536 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1537 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1538 const u8 *max_channel_switch_time;
1539 const u8 *country_elem;
1540 const u8 *pwr_constr_elem;
1541 const u8 *cisco_dtpc_elem;
1542 const struct ieee80211_timeout_interval_ie *timeout_int;
1543 const u8 *opmode_notif;
1544 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1545 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1546 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1547 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
1548 const struct ieee80211_bssid_index *bssid_index;
1549 u8 max_bssid_indicator;
1550 u8 dtim_count;
1551 u8 dtim_period;
1552 const struct ieee80211_addba_ext_ie *addba_ext_ie;
1553 const struct ieee80211_s1g_cap *s1g_capab;
1554 const struct ieee80211_s1g_oper_ie *s1g_oper;
1555 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat;
1556 const struct ieee80211_aid_response_ie *aid_resp;
1557
1558 /* length of them, respectively */
1559 u8 ext_capab_len;
1560 u8 ssid_len;
1561 u8 supp_rates_len;
1562 u8 tim_len;
1563 u8 challenge_len;
1564 u8 rsn_len;
1565 u8 rsnx_len;
1566 u8 ext_supp_rates_len;
1567 u8 wmm_info_len;
1568 u8 wmm_param_len;
1569 u8 he_cap_len;
1570 u8 mesh_id_len;
1571 u8 peering_len;
1572 u8 preq_len;
1573 u8 prep_len;
1574 u8 perr_len;
1575 u8 country_elem_len;
1576 u8 bssid_index_len;
1577
1578 /* whether a parse error occurred while retrieving these elements */
1579 bool parse_error;
1580};
1581
1582static inline struct ieee80211_local *hw_to_local(
1583 struct ieee80211_hw *hw)
1584{
1585 return container_of(hw, struct ieee80211_local, hw);
1586}
1587
1588static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1589{
1590 return container_of(txq, struct txq_info, txq);
1591}
1592
1593static inline bool txq_has_queue(struct ieee80211_txq *txq)
1594{
1595 struct txq_info *txqi = to_txq_info(txq);
1596
1597 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1598}
1599
1600static inline struct airtime_info *to_airtime_info(struct ieee80211_txq *txq)
1601{
1602 struct ieee80211_sub_if_data *sdata;
1603 struct sta_info *sta;
1604
1605 if (txq->sta) {
1606 sta = container_of(txq->sta, struct sta_info, sta);
1607 return &sta->airtime[txq->ac];
1608 }
1609
1610 sdata = vif_to_sdata(txq->vif);
1611 return &sdata->airtime[txq->ac];
1612}
1613
1614/* To avoid divisions in the fast path, we keep pre-computed reciprocals for
1615 * airtime weight calculations. There are two different weights to keep track
1616 * of: The per-station weight and the sum of weights per phy.
1617 *
1618 * For the per-station weights (kept in airtime_info below), we use 32-bit
1619 * reciprocals with a devisor of 2^19. This lets us keep the multiplications and
1620 * divisions for the station weights as 32-bit operations at the cost of a bit
1621 * of rounding error for high weights; but the choice of divisor keeps rounding
1622 * errors <10% for weights <2^15, assuming no more than 8ms of airtime is
1623 * reported at a time.
1624 *
1625 * For the per-phy sum of weights the values can get higher, so we use 64-bit
1626 * operations for those with a 32-bit divisor, which should avoid any
1627 * significant rounding errors.
1628 */
1629#define IEEE80211_RECIPROCAL_DIVISOR_64 0x100000000ULL
1630#define IEEE80211_RECIPROCAL_SHIFT_64 32
1631#define IEEE80211_RECIPROCAL_DIVISOR_32 0x80000U
1632#define IEEE80211_RECIPROCAL_SHIFT_32 19
1633
1634static inline void airtime_weight_set(struct airtime_info *air_info, u16 weight)
1635{
1636 if (air_info->weight == weight)
1637 return;
1638
1639 air_info->weight = weight;
1640 if (weight) {
1641 air_info->weight_reciprocal =
1642 IEEE80211_RECIPROCAL_DIVISOR_32 / weight;
1643 } else {
1644 air_info->weight_reciprocal = 0;
1645 }
1646}
1647
1648static inline void airtime_weight_sum_set(struct airtime_sched_info *air_sched,
1649 int weight_sum)
1650{
1651 if (air_sched->weight_sum == weight_sum)
1652 return;
1653
1654 air_sched->weight_sum = weight_sum;
1655 if (air_sched->weight_sum) {
1656 air_sched->weight_sum_reciprocal = IEEE80211_RECIPROCAL_DIVISOR_64;
1657 do_div(air_sched->weight_sum_reciprocal, air_sched->weight_sum);
1658 } else {
1659 air_sched->weight_sum_reciprocal = 0;
1660 }
1661}
1662
1663/* A problem when trying to enforce airtime fairness is that we want to divide
1664 * the airtime between the currently *active* stations. However, basing this on
1665 * the instantaneous queue state of stations doesn't work, as queues tend to
1666 * oscillate very quickly between empty and occupied, leading to the scheduler
1667 * thinking only a single station is active when deciding whether to allow
1668 * transmission (and thus not throttling correctly).
1669 *
1670 * To fix this we use a timer-based notion of activity: a station is considered
1671 * active if it has been scheduled within the last 100 ms; we keep a separate
1672 * list of all the stations considered active in this manner, and lazily update
1673 * the total weight of active stations from this list (filtering the stations in
1674 * the list by their 'last active' time).
1675 *
1676 * We add one additional safeguard to guard against stations that manage to get
1677 * scheduled every 100 ms but don't transmit a lot of data, and thus don't use
1678 * up any airtime. Such stations would be able to get priority for an extended
1679 * period of time if they do start transmitting at full capacity again, and so
1680 * we add an explicit maximum for how far behind a station is allowed to fall in
1681 * the virtual airtime domain. This limit is set to a relatively high value of
1682 * 20 ms because the main mechanism for catching up idle stations is the active
1683 * state as described above; i.e., the hard limit should only be hit in
1684 * pathological cases.
1685 */
1686#define AIRTIME_ACTIVE_DURATION (100 * NSEC_PER_MSEC)
1687#define AIRTIME_MAX_BEHIND 20000 /* 20 ms */
1688
1689static inline bool airtime_is_active(struct airtime_info *air_info, u64 now)
1690{
1691 return air_info->last_scheduled >= now - AIRTIME_ACTIVE_DURATION;
1692}
1693
1694static inline void airtime_set_active(struct airtime_sched_info *air_sched,
1695 struct airtime_info *air_info, u64 now)
1696{
1697 air_info->last_scheduled = now;
1698 air_sched->last_schedule_activity = now;
1699 list_move_tail(&air_info->list, &air_sched->active_list);
1700}
1701
1702static inline bool airtime_catchup_v_t(struct airtime_sched_info *air_sched,
1703 u64 v_t, u64 now)
1704{
1705 air_sched->v_t = v_t;
1706 return true;
1707}
1708
1709static inline void init_airtime_info(struct airtime_info *air_info,
1710 struct airtime_sched_info *air_sched)
1711{
1712 atomic_set(&air_info->aql_tx_pending, 0);
1713 air_info->aql_limit_low = air_sched->aql_txq_limit_low;
1714 air_info->aql_limit_high = air_sched->aql_txq_limit_high;
1715 airtime_weight_set(air_info, IEEE80211_DEFAULT_AIRTIME_WEIGHT);
1716 INIT_LIST_HEAD(&air_info->list);
1717}
1718
1719static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1720{
1721 return ether_addr_equal(raddr, addr) ||
1722 is_broadcast_ether_addr(raddr);
1723}
1724
1725static inline bool
1726ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1727{
1728 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1729 status->flag & RX_FLAG_MACTIME_END);
1730 return !!(status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END |
1731 RX_FLAG_MACTIME_PLCP_START));
1732}
1733
1734void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1735void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1736
1737/* This function returns the number of multicast stations connected to this
1738 * interface. It returns -1 if that number is not tracked, that is for netdevs
1739 * not in AP or AP_VLAN mode or when using 4addr.
1740 */
1741static inline int
1742ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1743{
1744 if (sdata->vif.type == NL80211_IFTYPE_AP)
1745 return atomic_read(&sdata->u.ap.num_mcast_sta);
1746 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1747 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1748 return -1;
1749}
1750
1751u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1752 struct ieee80211_rx_status *status,
1753 unsigned int mpdu_len,
1754 unsigned int mpdu_offset);
1755int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1756void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1757void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1758 u32 changed);
1759void ieee80211_configure_filter(struct ieee80211_local *local);
1760u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1761
1762u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1763int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1764 u64 *cookie, gfp_t gfp);
1765
1766void ieee80211_check_fast_rx(struct sta_info *sta);
1767void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1768void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1769void ieee80211_clear_fast_rx(struct sta_info *sta);
1770
1771/* STA code */
1772void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1773int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1774 struct cfg80211_auth_request *req);
1775int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1776 struct cfg80211_assoc_request *req);
1777int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1778 struct cfg80211_deauth_request *req);
1779int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1780 struct cfg80211_disassoc_request *req);
1781void ieee80211_send_pspoll(struct ieee80211_local *local,
1782 struct ieee80211_sub_if_data *sdata);
1783void ieee80211_recalc_ps(struct ieee80211_local *local);
1784void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1785int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1786void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1787void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1788 struct sk_buff *skb);
1789void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
1790 struct sk_buff *skb);
1791void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1792void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1793void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1794void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1795 __le16 fc, bool acked);
1796void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1797void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1798void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1799void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
1800 u8 *bssid, u8 reason, bool tx);
1801
1802/* IBSS code */
1803void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1804void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1805void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1806 const u8 *bssid, const u8 *addr, u32 supp_rates);
1807int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1808 struct cfg80211_ibss_params *params);
1809int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1810void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1811void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1812 struct sk_buff *skb);
1813int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1814 struct cfg80211_csa_settings *csa_settings);
1815int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1816void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1817
1818/* OCB code */
1819void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1820void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1821 const u8 *bssid, const u8 *addr, u32 supp_rates);
1822void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1823int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1824 struct ocb_setup *setup);
1825int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1826
1827/* mesh code */
1828void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1829void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1830 struct sk_buff *skb);
1831int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1832 struct cfg80211_csa_settings *csa_settings);
1833int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1834
1835/* scan/BSS handling */
1836void ieee80211_scan_work(struct work_struct *work);
1837int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1838 const u8 *ssid, u8 ssid_len,
1839 struct ieee80211_channel **channels,
1840 unsigned int n_channels,
1841 enum nl80211_bss_scan_width scan_width);
1842int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1843 struct cfg80211_scan_request *req);
1844void ieee80211_scan_cancel(struct ieee80211_local *local);
1845void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1846void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1847
1848void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1849struct ieee80211_bss *
1850ieee80211_bss_info_update(struct ieee80211_local *local,
1851 struct ieee80211_rx_status *rx_status,
1852 struct ieee80211_mgmt *mgmt,
1853 size_t len,
1854 struct ieee80211_channel *channel);
1855void ieee80211_rx_bss_put(struct ieee80211_local *local,
1856 struct ieee80211_bss *bss);
1857
1858/* scheduled scan handling */
1859int
1860__ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1861 struct cfg80211_sched_scan_request *req);
1862int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1863 struct cfg80211_sched_scan_request *req);
1864int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1865void ieee80211_sched_scan_end(struct ieee80211_local *local);
1866void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1867
1868/* off-channel/mgmt-tx */
1869void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1870void ieee80211_offchannel_return(struct ieee80211_local *local);
1871void ieee80211_roc_setup(struct ieee80211_local *local);
1872void ieee80211_start_next_roc(struct ieee80211_local *local);
1873void ieee80211_roc_purge(struct ieee80211_local *local,
1874 struct ieee80211_sub_if_data *sdata);
1875int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1876 struct ieee80211_channel *chan,
1877 unsigned int duration, u64 *cookie);
1878int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1879 struct wireless_dev *wdev, u64 cookie);
1880int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1881 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1882int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1883 struct wireless_dev *wdev, u64 cookie);
1884
1885/* channel switch handling */
1886void ieee80211_csa_finalize_work(struct work_struct *work);
1887int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1888 struct cfg80211_csa_settings *params);
1889
1890/* interface handling */
1891#define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
1892 NETIF_F_HW_CSUM | NETIF_F_SG | \
1893 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE)
1894#define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM)
1895#define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \
1896 MAC80211_SUPPORTED_FEATURES_RX)
1897
1898int ieee80211_iface_init(void);
1899void ieee80211_iface_exit(void);
1900int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1901 unsigned char name_assign_type,
1902 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1903 struct vif_params *params);
1904int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1905 enum nl80211_iftype type);
1906void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1907void ieee80211_remove_interfaces(struct ieee80211_local *local);
1908u32 ieee80211_idle_off(struct ieee80211_local *local);
1909void ieee80211_recalc_idle(struct ieee80211_local *local);
1910void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1911 const int offset);
1912int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1913void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1914int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1915void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1916
1917bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1918void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1919 bool update_bss);
1920void ieee80211_recalc_offload(struct ieee80211_local *local);
1921
1922static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1923{
1924 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1925}
1926
1927/* tx handling */
1928void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1929void ieee80211_tx_pending(struct tasklet_struct *t);
1930netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1931 struct net_device *dev);
1932netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1933 struct net_device *dev);
1934netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb,
1935 struct net_device *dev);
1936void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1937 struct net_device *dev,
1938 u32 info_flags,
1939 u32 ctrl_flags,
1940 u64 *cookie);
1941void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1942 struct sk_buff_head *skbs);
1943struct sk_buff *
1944ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1945 struct sk_buff *skb, u32 info_flags);
1946void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1947 struct ieee80211_supported_band *sband,
1948 int retry_count, int shift, bool send_to_cooked,
1949 struct ieee80211_tx_status *status);
1950
1951void ieee80211_check_fast_xmit(struct sta_info *sta);
1952void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1953void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1954void ieee80211_clear_fast_xmit(struct sta_info *sta);
1955int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
1956 const u8 *buf, size_t len,
1957 const u8 *dest, __be16 proto, bool unencrypted,
1958 u64 *cookie);
1959int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
1960 const u8 *buf, size_t len);
1961void ieee80211_resort_txq(struct ieee80211_hw *hw,
1962 struct ieee80211_txq *txq);
1963void ieee80211_unschedule_txq(struct ieee80211_hw *hw,
1964 struct ieee80211_txq *txq,
1965 bool purge);
1966void ieee80211_update_airtime_weight(struct ieee80211_local *local,
1967 struct airtime_sched_info *air_sched,
1968 u64 now, bool force);
1969
1970/* HT */
1971void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1972 struct ieee80211_sta_ht_cap *ht_cap);
1973bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1974 struct ieee80211_supported_band *sband,
1975 const struct ieee80211_ht_cap *ht_cap_ie,
1976 struct sta_info *sta);
1977void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1978 const u8 *da, u16 tid,
1979 u16 initiator, u16 reason_code);
1980int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1981 enum ieee80211_smps_mode smps, const u8 *da,
1982 const u8 *bssid);
1983void ieee80211_request_smps_ap_work(struct work_struct *work);
1984void ieee80211_request_smps_mgd_work(struct work_struct *work);
1985bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1986 enum ieee80211_smps_mode smps_mode_new);
1987
1988void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1989 u16 initiator, u16 reason, bool stop);
1990void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1991 u16 initiator, u16 reason, bool stop);
1992void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
1993 u8 dialog_token, u16 timeout,
1994 u16 start_seq_num, u16 ba_policy, u16 tid,
1995 u16 buf_size, bool tx, bool auto_seq,
1996 const struct ieee80211_addba_ext_ie *addbaext);
1997void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1998 enum ieee80211_agg_stop_reason reason);
1999void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
2000 struct sta_info *sta,
2001 struct ieee80211_mgmt *mgmt, size_t len);
2002void ieee80211_process_addba_resp(struct ieee80211_local *local,
2003 struct sta_info *sta,
2004 struct ieee80211_mgmt *mgmt,
2005 size_t len);
2006void ieee80211_process_addba_request(struct ieee80211_local *local,
2007 struct sta_info *sta,
2008 struct ieee80211_mgmt *mgmt,
2009 size_t len);
2010
2011int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2012 enum ieee80211_agg_stop_reason reason);
2013int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2014 enum ieee80211_agg_stop_reason reason);
2015void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
2016 struct tid_ampdu_tx *tid_tx);
2017void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
2018 struct tid_ampdu_tx *tid_tx);
2019void ieee80211_ba_session_work(struct work_struct *work);
2020void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
2021void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
2022
2023u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
2024enum nl80211_smps_mode
2025ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
2026
2027/* VHT */
2028void
2029ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
2030 struct ieee80211_supported_band *sband,
2031 const struct ieee80211_vht_cap *vht_cap_ie,
2032 struct sta_info *sta);
2033enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
2034enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
2035void ieee80211_sta_set_rx_nss(struct sta_info *sta);
2036enum ieee80211_sta_rx_bandwidth
2037ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
2038enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
2039void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
2040 struct ieee80211_mgmt *mgmt);
2041u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2042 struct sta_info *sta, u8 opmode,
2043 enum nl80211_band band);
2044void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2045 struct sta_info *sta, u8 opmode,
2046 enum nl80211_band band);
2047void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
2048 struct ieee80211_sta_vht_cap *vht_cap);
2049void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
2050 u16 vht_mask[NL80211_VHT_NSS_MAX]);
2051enum nl80211_chan_width
2052ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta);
2053
2054/* HE */
2055void
2056ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
2057 struct ieee80211_supported_band *sband,
2058 const u8 *he_cap_ie, u8 he_cap_len,
2059 const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
2060 struct sta_info *sta);
2061void
2062ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
2063 const struct ieee80211_he_spr *he_spr_ie_elem);
2064
2065void
2066ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
2067 const struct ieee80211_he_operation *he_op_ie_elem);
2068
2069/* S1G */
2070void ieee80211_s1g_sta_rate_init(struct sta_info *sta);
2071
2072/* Spectrum management */
2073void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
2074 struct ieee80211_mgmt *mgmt,
2075 size_t len);
2076/**
2077 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
2078 * @sdata: the sdata of the interface which has received the frame
2079 * @elems: parsed 802.11 elements received with the frame
2080 * @current_band: indicates the current band
2081 * @vht_cap_info: VHT capabilities of the transmitter
2082 * @sta_flags: contains information about own capabilities and restrictions
2083 * to decide which channel switch announcements can be accepted. Only the
2084 * following subset of &enum ieee80211_sta_flags are evaluated:
2085 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
2086 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
2087 * %IEEE80211_STA_DISABLE_160MHZ.
2088 * @bssid: the currently connected bssid (for reporting)
2089 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
2090 All of them will be filled with if success only.
2091 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
2092 */
2093int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
2094 struct ieee802_11_elems *elems,
2095 enum nl80211_band current_band,
2096 u32 vht_cap_info,
2097 u32 sta_flags, u8 *bssid,
2098 struct ieee80211_csa_ie *csa_ie);
2099
2100/* Suspend/resume and hw reconfiguration */
2101int ieee80211_reconfig(struct ieee80211_local *local);
2102void ieee80211_stop_device(struct ieee80211_local *local);
2103
2104int __ieee80211_suspend(struct ieee80211_hw *hw,
2105 struct cfg80211_wowlan *wowlan);
2106
2107static inline int __ieee80211_resume(struct ieee80211_hw *hw)
2108{
2109 struct ieee80211_local *local = hw_to_local(hw);
2110
2111 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
2112 !test_bit(SCAN_COMPLETED, &local->scanning),
2113 "%s: resume with hardware scan still in progress\n",
2114 wiphy_name(hw->wiphy));
2115
2116 return ieee80211_reconfig(hw_to_local(hw));
2117}
2118
2119/* utility functions/constants */
2120extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
2121int ieee80211_frame_duration(enum nl80211_band band, size_t len,
2122 int rate, int erp, int short_preamble,
2123 int shift);
2124void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
2125 struct ieee80211_tx_queue_params *qparam,
2126 int ac);
2127void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
2128 bool bss_notify, bool enable_qos);
2129void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
2130 struct sta_info *sta, struct sk_buff *skb);
2131
2132void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2133 struct sk_buff *skb, int tid,
2134 enum nl80211_band band);
2135
2136/* sta_out needs to be checked for ERR_PTR() before using */
2137int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata,
2138 struct sk_buff *skb,
2139 struct sta_info **sta_out);
2140
2141static inline void
2142ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2143 struct sk_buff *skb, int tid,
2144 enum nl80211_band band)
2145{
2146 rcu_read_lock();
2147 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
2148 rcu_read_unlock();
2149}
2150
2151static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
2152 struct sk_buff *skb, int tid)
2153{
2154 struct ieee80211_chanctx_conf *chanctx_conf;
2155
2156 rcu_read_lock();
2157 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2158 if (WARN_ON(!chanctx_conf)) {
2159 rcu_read_unlock();
2160 kfree_skb(skb);
2161 return;
2162 }
2163
2164 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
2165 chanctx_conf->def.chan->band);
2166 rcu_read_unlock();
2167}
2168
2169static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
2170 struct sk_buff *skb)
2171{
2172 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
2173 ieee80211_tx_skb_tid(sdata, skb, 7);
2174}
2175
2176u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
2177 struct ieee802_11_elems *elems,
2178 u64 filter, u32 crc, u8 *transmitter_bssid,
2179 u8 *bss_bssid);
2180static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
2181 bool action,
2182 struct ieee802_11_elems *elems,
2183 u8 *transmitter_bssid,
2184 u8 *bss_bssid)
2185{
2186 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0,
2187 transmitter_bssid, bss_bssid);
2188}
2189
2190
2191extern const int ieee802_1d_to_ac[8];
2192
2193static inline int ieee80211_ac_from_tid(int tid)
2194{
2195 return ieee802_1d_to_ac[tid & 7];
2196}
2197
2198void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
2199void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
2200void ieee80211_dynamic_ps_timer(struct timer_list *t);
2201void ieee80211_send_nullfunc(struct ieee80211_local *local,
2202 struct ieee80211_sub_if_data *sdata,
2203 bool powersave);
2204void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
2205 struct ieee80211_sub_if_data *sdata);
2206void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2207 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
2208
2209void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
2210 unsigned long queues,
2211 enum queue_stop_reason reason,
2212 bool refcounted);
2213void ieee80211_stop_vif_queues(struct ieee80211_local *local,
2214 struct ieee80211_sub_if_data *sdata,
2215 enum queue_stop_reason reason);
2216void ieee80211_wake_vif_queues(struct ieee80211_local *local,
2217 struct ieee80211_sub_if_data *sdata,
2218 enum queue_stop_reason reason);
2219void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
2220 unsigned long queues,
2221 enum queue_stop_reason reason,
2222 bool refcounted);
2223void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
2224 enum queue_stop_reason reason,
2225 bool refcounted);
2226void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
2227 enum queue_stop_reason reason,
2228 bool refcounted);
2229void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
2230void ieee80211_add_pending_skb(struct ieee80211_local *local,
2231 struct sk_buff *skb);
2232void ieee80211_add_pending_skbs(struct ieee80211_local *local,
2233 struct sk_buff_head *skbs);
2234void ieee80211_flush_queues(struct ieee80211_local *local,
2235 struct ieee80211_sub_if_data *sdata, bool drop);
2236void __ieee80211_flush_queues(struct ieee80211_local *local,
2237 struct ieee80211_sub_if_data *sdata,
2238 unsigned int queues, bool drop);
2239
2240static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2241{
2242 /*
2243 * It's unsafe to try to do any work during reconfigure flow.
2244 * When the flow ends the work will be requeued.
2245 */
2246 if (local->in_reconfig)
2247 return false;
2248
2249 /*
2250 * If quiescing is set, we are racing with __ieee80211_suspend.
2251 * __ieee80211_suspend flushes the workers after setting quiescing,
2252 * and we check quiescing / suspended before enqueing new workers.
2253 * We should abort the worker to avoid the races below.
2254 */
2255 if (local->quiescing)
2256 return false;
2257
2258 /*
2259 * We might already be suspended if the following scenario occurs:
2260 * __ieee80211_suspend Control path
2261 *
2262 * if (local->quiescing)
2263 * return;
2264 * local->quiescing = true;
2265 * flush_workqueue();
2266 * queue_work(...);
2267 * local->suspended = true;
2268 * local->quiescing = false;
2269 * worker starts running...
2270 */
2271 if (local->suspended)
2272 return false;
2273
2274 return true;
2275}
2276
2277int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2278void ieee80211_txq_set_params(struct ieee80211_local *local);
2279void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2280void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2281 struct sta_info *sta,
2282 struct txq_info *txq, int tid);
2283void ieee80211_txq_purge(struct ieee80211_local *local,
2284 struct txq_info *txqi);
2285void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2286 struct ieee80211_sub_if_data *sdata);
2287void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2288 struct txq_info *txqi);
2289void ieee80211_wake_txqs(struct tasklet_struct *t);
2290void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2291 u16 transaction, u16 auth_alg, u16 status,
2292 const u8 *extra, size_t extra_len, const u8 *bssid,
2293 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2294 u32 tx_flags);
2295void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2296 const u8 *da, const u8 *bssid,
2297 u16 stype, u16 reason,
2298 bool send_frame, u8 *frame_buf);
2299
2300enum {
2301 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
2302 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
2303 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
2304};
2305
2306int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2307 size_t buffer_len,
2308 struct ieee80211_scan_ies *ie_desc,
2309 const u8 *ie, size_t ie_len,
2310 u8 bands_used, u32 *rate_masks,
2311 struct cfg80211_chan_def *chandef,
2312 u32 flags);
2313struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2314 const u8 *src, const u8 *dst,
2315 u32 ratemask,
2316 struct ieee80211_channel *chan,
2317 const u8 *ssid, size_t ssid_len,
2318 const u8 *ie, size_t ie_len,
2319 u32 flags);
2320u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2321 struct ieee802_11_elems *elems,
2322 enum nl80211_band band, u32 *basic_rates);
2323int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2324 enum ieee80211_smps_mode smps_mode);
2325void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
2326void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
2327
2328size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2329u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2330 u16 cap);
2331u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2332 const struct cfg80211_chan_def *chandef,
2333 u16 prot_mode, bool rifs_mode);
2334void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2335 const struct cfg80211_chan_def *chandef);
2336u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2337 u32 cap);
2338u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2339 const struct cfg80211_chan_def *chandef);
2340u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2341u8 *ieee80211_ie_build_he_cap(u8 *pos,
2342 const struct ieee80211_sta_he_cap *he_cap,
2343 u8 *end);
2344void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2345 struct sk_buff *skb);
2346u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef);
2347int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2348 const struct ieee80211_supported_band *sband,
2349 const u8 *srates, int srates_len, u32 *rates);
2350int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2351 struct sk_buff *skb, bool need_basic,
2352 enum nl80211_band band);
2353int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2354 struct sk_buff *skb, bool need_basic,
2355 enum nl80211_band band);
2356u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2357void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
2358 struct ieee80211_sta_s1g_cap *caps,
2359 struct sk_buff *skb);
2360void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
2361 struct sk_buff *skb);
2362
2363/* channel management */
2364bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2365 struct cfg80211_chan_def *chandef);
2366bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
2367 const struct ieee80211_vht_operation *oper,
2368 const struct ieee80211_ht_operation *htop,
2369 struct cfg80211_chan_def *chandef);
2370bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
2371 const struct ieee80211_he_operation *he_oper,
2372 struct cfg80211_chan_def *chandef);
2373bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
2374 struct cfg80211_chan_def *chandef);
2375u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2376
2377int __must_check
2378ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
2379 const struct cfg80211_chan_def *chandef,
2380 enum ieee80211_chanctx_mode mode);
2381int __must_check
2382ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
2383 const struct cfg80211_chan_def *chandef,
2384 enum ieee80211_chanctx_mode mode,
2385 bool radar_required);
2386int __must_check
2387ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2388int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2389
2390int __must_check
2391ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2392 const struct cfg80211_chan_def *chandef,
2393 u32 *changed);
2394void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2395void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2396void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2397 bool clear);
2398int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2399 struct ieee80211_chanctx *ctx);
2400
2401void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2402 struct ieee80211_chanctx *chanctx);
2403void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2404 struct ieee80211_chanctx *ctx);
2405bool ieee80211_is_radar_required(struct ieee80211_local *local);
2406
2407void ieee80211_dfs_cac_timer(unsigned long data);
2408void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2409void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2410void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2411int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2412 struct cfg80211_csa_settings *csa_settings);
2413
2414bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2415bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2416const struct ieee80211_cipher_scheme *
2417ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2418 enum nl80211_iftype iftype);
2419int ieee80211_cs_headroom(struct ieee80211_local *local,
2420 struct cfg80211_crypto_settings *crypto,
2421 enum nl80211_iftype iftype);
2422void ieee80211_recalc_dtim(struct ieee80211_local *local,
2423 struct ieee80211_sub_if_data *sdata);
2424int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2425 const struct cfg80211_chan_def *chandef,
2426 enum ieee80211_chanctx_mode chanmode,
2427 u8 radar_detect);
2428int ieee80211_max_num_channels(struct ieee80211_local *local);
2429void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2430 struct ieee80211_chanctx *ctx);
2431
2432/* TDLS */
2433int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2434 const u8 *peer, u8 action_code, u8 dialog_token,
2435 u16 status_code, u32 peer_capability,
2436 bool initiator, const u8 *extra_ies,
2437 size_t extra_ies_len);
2438int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2439 const u8 *peer, enum nl80211_tdls_operation oper);
2440void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2441int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2442 const u8 *addr, u8 oper_class,
2443 struct cfg80211_chan_def *chandef);
2444void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2445 struct net_device *dev,
2446 const u8 *addr);
2447void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2448void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2449 const u8 *peer, u16 reason);
2450void
2451ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata,
2452 struct sk_buff *skb);
2453
2454
2455const char *ieee80211_get_reason_code_string(u16 reason_code);
2456u16 ieee80211_encode_usf(int val);
2457u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
2458 enum nl80211_iftype type);
2459
2460extern const struct ethtool_ops ieee80211_ethtool_ops;
2461
2462u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw,
2463 struct ieee80211_vif *vif,
2464 struct ieee80211_sta *pubsta,
2465 int len, bool ampdu);
2466#ifdef CONFIG_MAC80211_NOINLINE
2467#define debug_noinline noinline
2468#else
2469#define debug_noinline
2470#endif
2471
2472void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache);
2473void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache);
2474
2475#endif /* IEEE80211_I_H */
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) 2018-2020 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 <net/ieee80211_radiotap.h>
29#include <net/cfg80211.h>
30#include <net/mac80211.h>
31#include <net/fq.h>
32#include "key.h"
33#include "sta_info.h"
34#include "debug.h"
35
36extern const struct cfg80211_ops mac80211_config_ops;
37
38struct ieee80211_local;
39
40/* Maximum number of broadcast/multicast frames to buffer when some of the
41 * associated stations are using power saving. */
42#define AP_MAX_BC_BUFFER 128
43
44/* Maximum number of frames buffered to all STAs, including multicast frames.
45 * Note: increasing this limit increases the potential memory requirement. Each
46 * frame can be up to about 2 kB long. */
47#define TOTAL_MAX_TX_BUFFER 512
48
49/* Required encryption head and tailroom */
50#define IEEE80211_ENCRYPT_HEADROOM 8
51#define IEEE80211_ENCRYPT_TAILROOM 18
52
53/* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
54 * reception of at least three fragmented frames. This limit can be increased
55 * by changing this define, at the cost of slower frame reassembly and
56 * increased memory use (about 2 kB of RAM per entry). */
57#define IEEE80211_FRAGMENT_MAX 4
58
59/* power level hasn't been configured (or set to automatic) */
60#define IEEE80211_UNSET_POWER_LEVEL INT_MIN
61
62/*
63 * Some APs experience problems when working with U-APSD. Decreasing the
64 * probability of that happening by using legacy mode for all ACs but VO isn't
65 * enough.
66 *
67 * Cisco 4410N originally forced us to enable VO by default only because it
68 * treated non-VO ACs as legacy.
69 *
70 * However some APs (notably Netgear R7000) silently reclassify packets to
71 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
72 * clients would never see some frames (e.g. ARP responses) or would fetch them
73 * accidentally after a long time.
74 *
75 * It makes little sense to enable u-APSD queues by default because it needs
76 * userspace applications to be aware of it to actually take advantage of the
77 * possible additional powersavings. Implicitly depending on driver autotrigger
78 * frame support doesn't make much sense.
79 */
80#define IEEE80211_DEFAULT_UAPSD_QUEUES 0
81
82#define IEEE80211_DEFAULT_MAX_SP_LEN \
83 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
84
85extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS];
86
87#define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
88
89#define IEEE80211_MAX_NAN_INSTANCE_ID 255
90
91struct ieee80211_fragment_entry {
92 struct sk_buff_head skb_list;
93 unsigned long first_frag_time;
94 u16 seq;
95 u16 extra_len;
96 u16 last_frag;
97 u8 rx_queue;
98 bool check_sequential_pn; /* needed for CCMP/GCMP */
99 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
100};
101
102
103struct ieee80211_bss {
104 u32 device_ts_beacon, device_ts_presp;
105
106 bool wmm_used;
107 bool uapsd_supported;
108
109#define IEEE80211_MAX_SUPP_RATES 32
110 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
111 size_t supp_rates_len;
112 struct ieee80211_rate *beacon_rate;
113
114 u32 vht_cap_info;
115
116 /*
117 * During association, we save an ERP value from a probe response so
118 * that we can feed ERP info to the driver when handling the
119 * association completes. these fields probably won't be up-to-date
120 * otherwise, you probably don't want to use them.
121 */
122 bool has_erp_value;
123 u8 erp_value;
124
125 /* Keep track of the corruption of the last beacon/probe response. */
126 u8 corrupt_data;
127
128 /* Keep track of what bits of information we have valid info for. */
129 u8 valid_data;
130};
131
132/**
133 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
134 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
135 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
136 *
137 * These are bss flags that are attached to a bss in the
138 * @corrupt_data field of &struct ieee80211_bss.
139 */
140enum ieee80211_bss_corrupt_data_flags {
141 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
142 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
143};
144
145/**
146 * enum ieee80211_valid_data_flags - BSS valid data flags
147 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
148 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
149 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
150 *
151 * These are bss flags that are attached to a bss in the
152 * @valid_data field of &struct ieee80211_bss. They show which parts
153 * of the data structure were received as a result of an un-corrupted
154 * beacon/probe response.
155 */
156enum ieee80211_bss_valid_data_flags {
157 IEEE80211_BSS_VALID_WMM = BIT(1),
158 IEEE80211_BSS_VALID_RATES = BIT(2),
159 IEEE80211_BSS_VALID_ERP = BIT(3)
160};
161
162typedef unsigned __bitwise ieee80211_tx_result;
163#define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
164#define TX_DROP ((__force ieee80211_tx_result) 1u)
165#define TX_QUEUED ((__force ieee80211_tx_result) 2u)
166
167#define IEEE80211_TX_UNICAST BIT(1)
168#define IEEE80211_TX_PS_BUFFERED BIT(2)
169
170struct ieee80211_tx_data {
171 struct sk_buff *skb;
172 struct sk_buff_head skbs;
173 struct ieee80211_local *local;
174 struct ieee80211_sub_if_data *sdata;
175 struct sta_info *sta;
176 struct ieee80211_key *key;
177 struct ieee80211_tx_rate rate;
178
179 unsigned int flags;
180};
181
182
183typedef unsigned __bitwise ieee80211_rx_result;
184#define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
185#define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
186#define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
187#define RX_QUEUED ((__force ieee80211_rx_result) 3u)
188
189/**
190 * enum ieee80211_packet_rx_flags - packet RX flags
191 * @IEEE80211_RX_AMSDU: a-MSDU packet
192 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
193 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
194 *
195 * These are per-frame flags that are attached to a frame in the
196 * @rx_flags field of &struct ieee80211_rx_status.
197 */
198enum ieee80211_packet_rx_flags {
199 IEEE80211_RX_AMSDU = BIT(3),
200 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
201 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
202};
203
204/**
205 * enum ieee80211_rx_flags - RX data flags
206 *
207 * @IEEE80211_RX_CMNTR: received on cooked monitor already
208 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
209 * to cfg80211_report_obss_beacon().
210 *
211 * These flags are used across handling multiple interfaces
212 * for a single frame.
213 */
214enum ieee80211_rx_flags {
215 IEEE80211_RX_CMNTR = BIT(0),
216 IEEE80211_RX_BEACON_REPORTED = BIT(1),
217};
218
219struct ieee80211_rx_data {
220 struct list_head *list;
221 struct sk_buff *skb;
222 struct ieee80211_local *local;
223 struct ieee80211_sub_if_data *sdata;
224 struct sta_info *sta;
225 struct ieee80211_key *key;
226
227 unsigned int flags;
228
229 /*
230 * Index into sequence numbers array, 0..16
231 * since the last (16) is used for non-QoS,
232 * will be 16 on non-QoS frames.
233 */
234 int seqno_idx;
235
236 /*
237 * Index into the security IV/PN arrays, 0..16
238 * since the last (16) is used for CCMP-encrypted
239 * management frames, will be set to 16 on mgmt
240 * frames and 0 on non-QoS frames.
241 */
242 int security_idx;
243
244 u32 tkip_iv32;
245 u16 tkip_iv16;
246};
247
248struct ieee80211_csa_settings {
249 const u16 *counter_offsets_beacon;
250 const u16 *counter_offsets_presp;
251
252 int n_counter_offsets_beacon;
253 int n_counter_offsets_presp;
254
255 u8 count;
256};
257
258struct beacon_data {
259 u8 *head, *tail;
260 int head_len, tail_len;
261 struct ieee80211_meshconf_ie *meshconf;
262 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
263 u8 csa_current_counter;
264 struct rcu_head rcu_head;
265};
266
267struct probe_resp {
268 struct rcu_head rcu_head;
269 int len;
270 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
271 u8 data[];
272};
273
274struct ps_data {
275 /* yes, this looks ugly, but guarantees that we can later use
276 * bitmap_empty :)
277 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
278 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
279 __aligned(__alignof__(unsigned long));
280 struct sk_buff_head bc_buf;
281 atomic_t num_sta_ps; /* number of stations in PS mode */
282 int dtim_count;
283 bool dtim_bc_mc;
284};
285
286struct ieee80211_if_ap {
287 struct beacon_data __rcu *beacon;
288 struct probe_resp __rcu *probe_resp;
289
290 /* to be used after channel switch. */
291 struct cfg80211_beacon_data *next_beacon;
292 struct list_head vlans; /* write-protected with RTNL and local->mtx */
293
294 struct ps_data ps;
295 atomic_t num_mcast_sta; /* number of stations receiving multicast */
296
297 bool multicast_to_unicast;
298};
299
300struct ieee80211_if_wds {
301 struct sta_info *sta;
302 u8 remote_addr[ETH_ALEN];
303};
304
305struct ieee80211_if_vlan {
306 struct list_head list; /* write-protected with RTNL and local->mtx */
307
308 /* used for all tx if the VLAN is configured to 4-addr mode */
309 struct sta_info __rcu *sta;
310 atomic_t num_mcast_sta; /* number of stations receiving multicast */
311};
312
313struct mesh_stats {
314 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
315 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
316 __u32 fwded_frames; /* Mesh total forwarded frames */
317 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
318 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
319 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
320};
321
322#define PREQ_Q_F_START 0x1
323#define PREQ_Q_F_REFRESH 0x2
324struct mesh_preq_queue {
325 struct list_head list;
326 u8 dst[ETH_ALEN];
327 u8 flags;
328};
329
330struct ieee80211_roc_work {
331 struct list_head list;
332
333 struct ieee80211_sub_if_data *sdata;
334
335 struct ieee80211_channel *chan;
336
337 bool started, abort, hw_begun, notified;
338 bool on_channel;
339
340 unsigned long start_time;
341
342 u32 duration, req_duration;
343 struct sk_buff *frame;
344 u64 cookie, mgmt_tx_cookie;
345 enum ieee80211_roc_type type;
346};
347
348/* flags used in struct ieee80211_if_managed.flags */
349enum ieee80211_sta_flags {
350 IEEE80211_STA_CONNECTION_POLL = BIT(1),
351 IEEE80211_STA_CONTROL_PORT = BIT(2),
352 IEEE80211_STA_DISABLE_HT = BIT(4),
353 IEEE80211_STA_MFP_ENABLED = BIT(6),
354 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
355 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
356 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
357 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
358 IEEE80211_STA_DISABLE_VHT = BIT(11),
359 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
360 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
361 IEEE80211_STA_DISABLE_WMM = BIT(14),
362 IEEE80211_STA_ENABLE_RRM = BIT(15),
363 IEEE80211_STA_DISABLE_HE = BIT(16),
364};
365
366struct ieee80211_mgd_auth_data {
367 struct cfg80211_bss *bss;
368 unsigned long timeout;
369 int tries;
370 u16 algorithm, expected_transaction;
371
372 u8 key[WLAN_KEY_LEN_WEP104];
373 u8 key_len, key_idx;
374 bool done;
375 bool peer_confirmed;
376 bool timeout_started;
377
378 u16 sae_trans, sae_status;
379 size_t data_len;
380 u8 data[];
381};
382
383struct ieee80211_mgd_assoc_data {
384 struct cfg80211_bss *bss;
385 const u8 *supp_rates;
386
387 unsigned long timeout;
388 int tries;
389
390 u16 capability;
391 u8 prev_bssid[ETH_ALEN];
392 u8 ssid[IEEE80211_MAX_SSID_LEN];
393 u8 ssid_len;
394 u8 supp_rates_len;
395 bool wmm, uapsd;
396 bool need_beacon;
397 bool synced;
398 bool timeout_started;
399
400 u8 ap_ht_param;
401
402 struct ieee80211_vht_cap ap_vht_cap;
403
404 u8 fils_nonces[2 * FILS_NONCE_LEN];
405 u8 fils_kek[FILS_MAX_KEK_LEN];
406 size_t fils_kek_len;
407
408 size_t ie_len;
409 u8 ie[];
410};
411
412struct ieee80211_sta_tx_tspec {
413 /* timestamp of the first packet in the time slice */
414 unsigned long time_slice_start;
415
416 u32 admitted_time; /* in usecs, unlike over the air */
417 u8 tsid;
418 s8 up; /* signed to be able to invalidate with -1 during teardown */
419
420 /* consumed TX time in microseconds in the time slice */
421 u32 consumed_tx_time;
422 enum {
423 TX_TSPEC_ACTION_NONE = 0,
424 TX_TSPEC_ACTION_DOWNGRADE,
425 TX_TSPEC_ACTION_STOP_DOWNGRADE,
426 } action;
427 bool downgraded;
428};
429
430DECLARE_EWMA(beacon_signal, 4, 4)
431
432struct ieee80211_if_managed {
433 struct timer_list timer;
434 struct timer_list conn_mon_timer;
435 struct timer_list bcn_mon_timer;
436 struct timer_list chswitch_timer;
437 struct work_struct monitor_work;
438 struct work_struct chswitch_work;
439 struct work_struct beacon_connection_loss_work;
440 struct work_struct csa_connection_drop_work;
441
442 unsigned long beacon_timeout;
443 unsigned long probe_timeout;
444 int probe_send_count;
445 bool nullfunc_failed;
446 bool connection_loss;
447
448 struct cfg80211_bss *associated;
449 struct ieee80211_mgd_auth_data *auth_data;
450 struct ieee80211_mgd_assoc_data *assoc_data;
451
452 u8 bssid[ETH_ALEN] __aligned(2);
453
454 bool powersave; /* powersave requested for this iface */
455 bool broken_ap; /* AP is broken -- turn off powersave */
456 bool have_beacon;
457 u8 dtim_period;
458 enum ieee80211_smps_mode req_smps, /* requested smps mode */
459 driver_smps_mode; /* smps mode request */
460
461 struct work_struct request_smps_work;
462
463 unsigned int flags;
464
465 bool csa_waiting_bcn;
466 bool csa_ignored_same_chan;
467
468 bool beacon_crc_valid;
469 u32 beacon_crc;
470
471 bool status_acked;
472 bool status_received;
473 __le16 status_fc;
474
475 enum {
476 IEEE80211_MFP_DISABLED,
477 IEEE80211_MFP_OPTIONAL,
478 IEEE80211_MFP_REQUIRED
479 } mfp; /* management frame protection */
480
481 /*
482 * Bitmask of enabled u-apsd queues,
483 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
484 * to take effect.
485 */
486 unsigned int uapsd_queues;
487
488 /*
489 * Maximum number of buffered frames AP can deliver during a
490 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
491 * Needs a new association to take effect.
492 */
493 unsigned int uapsd_max_sp_len;
494
495 int wmm_last_param_set;
496 int mu_edca_last_param_set;
497
498 u8 use_4addr;
499
500 s16 p2p_noa_index;
501
502 struct ewma_beacon_signal ave_beacon_signal;
503
504 /*
505 * Number of Beacon frames used in ave_beacon_signal. This can be used
506 * to avoid generating less reliable cqm events that would be based
507 * only on couple of received frames.
508 */
509 unsigned int count_beacon_signal;
510
511 /* Number of times beacon loss was invoked. */
512 unsigned int beacon_loss_count;
513
514 /*
515 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
516 * that triggered a cqm event. 0 indicates that no event has been
517 * generated for the current association.
518 */
519 int last_cqm_event_signal;
520
521 /*
522 * State variables for keeping track of RSSI of the AP currently
523 * connected to and informing driver when RSSI has gone
524 * below/above a certain threshold.
525 */
526 int rssi_min_thold, rssi_max_thold;
527 int last_ave_beacon_signal;
528
529 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
530 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
531 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
532 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
533
534 /* TDLS support */
535 u8 tdls_peer[ETH_ALEN] __aligned(2);
536 struct delayed_work tdls_peer_del_work;
537 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
538 struct sk_buff *teardown_skb; /* A copy to send through the AP */
539 spinlock_t teardown_lock; /* To lock changing teardown_skb */
540 bool tdls_chan_switch_prohibited;
541 bool tdls_wider_bw_prohibited;
542
543 /* WMM-AC TSPEC support */
544 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
545 /* Use a separate work struct so that we can do something here
546 * while the sdata->work is flushing the queues, for example.
547 * otherwise, in scenarios where we hardly get any traffic out
548 * on the BE queue, but there's a lot of VO traffic, we might
549 * get stuck in a downgraded situation and flush takes forever.
550 */
551 struct delayed_work tx_tspec_wk;
552
553 /* Information elements from the last transmitted (Re)Association
554 * Request frame.
555 */
556 u8 *assoc_req_ies;
557 size_t assoc_req_ies_len;
558};
559
560struct ieee80211_if_ibss {
561 struct timer_list timer;
562 struct work_struct csa_connection_drop_work;
563
564 unsigned long last_scan_completed;
565
566 u32 basic_rates;
567
568 bool fixed_bssid;
569 bool fixed_channel;
570 bool privacy;
571
572 bool control_port;
573 bool userspace_handles_dfs;
574
575 u8 bssid[ETH_ALEN] __aligned(2);
576 u8 ssid[IEEE80211_MAX_SSID_LEN];
577 u8 ssid_len, ie_len;
578 u8 *ie;
579 struct cfg80211_chan_def chandef;
580
581 unsigned long ibss_join_req;
582 /* probe response/beacon for IBSS */
583 struct beacon_data __rcu *presp;
584
585 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
586 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
587
588 spinlock_t incomplete_lock;
589 struct list_head incomplete_stations;
590
591 enum {
592 IEEE80211_IBSS_MLME_SEARCH,
593 IEEE80211_IBSS_MLME_JOINED,
594 } state;
595};
596
597/**
598 * struct ieee80211_if_ocb - OCB mode state
599 *
600 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
601 * @wrkq_flags: OCB deferred task action
602 * @incomplete_lock: delayed STA insertion lock
603 * @incomplete_stations: list of STAs waiting for delayed insertion
604 * @joined: indication if the interface is connected to an OCB network
605 */
606struct ieee80211_if_ocb {
607 struct timer_list housekeeping_timer;
608 unsigned long wrkq_flags;
609
610 spinlock_t incomplete_lock;
611 struct list_head incomplete_stations;
612
613 bool joined;
614};
615
616/**
617 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
618 *
619 * these declarations define the interface, which enables
620 * vendor-specific mesh synchronization
621 *
622 */
623struct ieee802_11_elems;
624struct ieee80211_mesh_sync_ops {
625 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
626 u16 stype,
627 struct ieee80211_mgmt *mgmt,
628 struct ieee802_11_elems *elems,
629 struct ieee80211_rx_status *rx_status);
630
631 /* should be called with beacon_data under RCU read lock */
632 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
633 struct beacon_data *beacon);
634 /* add other framework functions here */
635};
636
637struct mesh_csa_settings {
638 struct rcu_head rcu_head;
639 struct cfg80211_csa_settings settings;
640};
641
642struct ieee80211_if_mesh {
643 struct timer_list housekeeping_timer;
644 struct timer_list mesh_path_timer;
645 struct timer_list mesh_path_root_timer;
646
647 unsigned long wrkq_flags;
648 unsigned long mbss_changed;
649
650 bool userspace_handles_dfs;
651
652 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
653 size_t mesh_id_len;
654 /* Active Path Selection Protocol Identifier */
655 u8 mesh_pp_id;
656 /* Active Path Selection Metric Identifier */
657 u8 mesh_pm_id;
658 /* Congestion Control Mode Identifier */
659 u8 mesh_cc_id;
660 /* Synchronization Protocol Identifier */
661 u8 mesh_sp_id;
662 /* Authentication Protocol Identifier */
663 u8 mesh_auth_id;
664 /* Local mesh Sequence Number */
665 u32 sn;
666 /* Last used PREQ ID */
667 u32 preq_id;
668 atomic_t mpaths;
669 /* Timestamp of last SN update */
670 unsigned long last_sn_update;
671 /* Time when it's ok to send next PERR */
672 unsigned long next_perr;
673 /* Timestamp of last PREQ sent */
674 unsigned long last_preq;
675 struct mesh_rmc *rmc;
676 spinlock_t mesh_preq_queue_lock;
677 struct mesh_preq_queue preq_queue;
678 int preq_queue_len;
679 struct mesh_stats mshstats;
680 struct mesh_config mshcfg;
681 atomic_t estab_plinks;
682 u32 mesh_seqnum;
683 bool accepting_plinks;
684 int num_gates;
685 struct beacon_data __rcu *beacon;
686 const u8 *ie;
687 u8 ie_len;
688 enum {
689 IEEE80211_MESH_SEC_NONE = 0x0,
690 IEEE80211_MESH_SEC_AUTHED = 0x1,
691 IEEE80211_MESH_SEC_SECURED = 0x2,
692 } security;
693 bool user_mpm;
694 /* Extensible Synchronization Framework */
695 const struct ieee80211_mesh_sync_ops *sync_ops;
696 s64 sync_offset_clockdrift_max;
697 spinlock_t sync_offset_lock;
698 /* mesh power save */
699 enum nl80211_mesh_power_mode nonpeer_pm;
700 int ps_peers_light_sleep;
701 int ps_peers_deep_sleep;
702 struct ps_data ps;
703 /* Channel Switching Support */
704 struct mesh_csa_settings __rcu *csa;
705 enum {
706 IEEE80211_MESH_CSA_ROLE_NONE,
707 IEEE80211_MESH_CSA_ROLE_INIT,
708 IEEE80211_MESH_CSA_ROLE_REPEATER,
709 } csa_role;
710 u8 chsw_ttl;
711 u16 pre_value;
712
713 /* offset from skb->data while building IE */
714 int meshconf_offset;
715
716 struct mesh_table *mesh_paths;
717 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */
718 int mesh_paths_generation;
719 int mpp_paths_generation;
720};
721
722#ifdef CONFIG_MAC80211_MESH
723#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
724 do { (msh)->mshstats.name++; } while (0)
725#else
726#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
727 do { } while (0)
728#endif
729
730/**
731 * enum ieee80211_sub_if_data_flags - virtual interface flags
732 *
733 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
734 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
735 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
736 * associated stations and deliver multicast frames both
737 * back to wireless media and to the local net stack.
738 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
739 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
740 */
741enum ieee80211_sub_if_data_flags {
742 IEEE80211_SDATA_ALLMULTI = BIT(0),
743 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
744 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
745 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
746 IEEE80211_SDATA_IN_DRIVER = BIT(5),
747};
748
749/**
750 * enum ieee80211_sdata_state_bits - virtual interface state bits
751 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
752 * mirrors netif_running() but is separate for interface type
753 * change handling while the interface is up
754 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
755 * mode, so queues are stopped
756 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
757 * to offchannel, reset when offchannel returns
758 */
759enum ieee80211_sdata_state_bits {
760 SDATA_STATE_RUNNING,
761 SDATA_STATE_OFFCHANNEL,
762 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
763};
764
765/**
766 * enum ieee80211_chanctx_mode - channel context configuration mode
767 *
768 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
769 * multiple interfaces
770 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
771 * only by a single interface. This can be used for example for
772 * non-fixed channel IBSS.
773 */
774enum ieee80211_chanctx_mode {
775 IEEE80211_CHANCTX_SHARED,
776 IEEE80211_CHANCTX_EXCLUSIVE
777};
778
779/**
780 * enum ieee80211_chanctx_replace_state - channel context replacement state
781 *
782 * This is used for channel context in-place reservations that require channel
783 * context switch/swap.
784 *
785 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
786 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
787 * by a (not yet registered) channel context pointed by %replace_ctx.
788 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
789 * replaces an existing channel context pointed to by %replace_ctx.
790 */
791enum ieee80211_chanctx_replace_state {
792 IEEE80211_CHANCTX_REPLACE_NONE,
793 IEEE80211_CHANCTX_WILL_BE_REPLACED,
794 IEEE80211_CHANCTX_REPLACES_OTHER,
795};
796
797struct ieee80211_chanctx {
798 struct list_head list;
799 struct rcu_head rcu_head;
800
801 struct list_head assigned_vifs;
802 struct list_head reserved_vifs;
803
804 enum ieee80211_chanctx_replace_state replace_state;
805 struct ieee80211_chanctx *replace_ctx;
806
807 enum ieee80211_chanctx_mode mode;
808 bool driver_present;
809
810 struct ieee80211_chanctx_conf conf;
811};
812
813struct mac80211_qos_map {
814 struct cfg80211_qos_map qos_map;
815 struct rcu_head rcu_head;
816};
817
818enum txq_info_flags {
819 IEEE80211_TXQ_STOP,
820 IEEE80211_TXQ_AMPDU,
821 IEEE80211_TXQ_NO_AMSDU,
822 IEEE80211_TXQ_STOP_NETIF_TX,
823};
824
825/**
826 * struct txq_info - per tid queue
827 *
828 * @tin: contains packets split into multiple flows
829 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
830 * a fq_flow which is already owned by a different tin
831 * @def_cvars: codel vars for @def_flow
832 * @frags: used to keep fragments created after dequeue
833 * @schedule_order: used with ieee80211_local->active_txqs
834 * @schedule_round: counter to prevent infinite loops on TXQ scheduling
835 */
836struct txq_info {
837 struct fq_tin tin;
838 struct fq_flow def_flow;
839 struct codel_vars def_cvars;
840 struct codel_stats cstats;
841 struct sk_buff_head frags;
842 struct list_head schedule_order;
843 u16 schedule_round;
844 unsigned long flags;
845
846 /* keep last! */
847 struct ieee80211_txq txq;
848};
849
850struct ieee80211_if_mntr {
851 u32 flags;
852 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
853
854 struct list_head list;
855};
856
857/**
858 * struct ieee80211_if_nan - NAN state
859 *
860 * @conf: current NAN configuration
861 * @func_ids: a bitmap of available instance_id's
862 */
863struct ieee80211_if_nan {
864 struct cfg80211_nan_conf conf;
865
866 /* protects function_inst_ids */
867 spinlock_t func_lock;
868 struct idr function_inst_ids;
869};
870
871struct ieee80211_sub_if_data {
872 struct list_head list;
873
874 struct wireless_dev wdev;
875
876 /* keys */
877 struct list_head key_list;
878
879 /* count for keys needing tailroom space allocation */
880 int crypto_tx_tailroom_needed_cnt;
881 int crypto_tx_tailroom_pending_dec;
882 struct delayed_work dec_tailroom_needed_wk;
883
884 struct net_device *dev;
885 struct ieee80211_local *local;
886
887 unsigned int flags;
888
889 unsigned long state;
890
891 char name[IFNAMSIZ];
892
893 /* Fragment table for host-based reassembly */
894 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
895 unsigned int fragment_next;
896
897 /* TID bitmap for NoAck policy */
898 u16 noack_map;
899
900 /* bit field of ACM bits (BIT(802.1D tag)) */
901 u8 wmm_acm;
902
903 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS +
904 NUM_DEFAULT_MGMT_KEYS +
905 NUM_DEFAULT_BEACON_KEYS];
906 struct ieee80211_key __rcu *default_unicast_key;
907 struct ieee80211_key __rcu *default_multicast_key;
908 struct ieee80211_key __rcu *default_mgmt_key;
909 struct ieee80211_key __rcu *default_beacon_key;
910
911 u16 sequence_number;
912 __be16 control_port_protocol;
913 bool control_port_no_encrypt;
914 bool control_port_no_preauth;
915 bool control_port_over_nl80211;
916 int encrypt_headroom;
917
918 atomic_t num_tx_queued;
919 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
920 struct mac80211_qos_map __rcu *qos_map;
921
922 struct work_struct csa_finalize_work;
923 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
924 struct cfg80211_chan_def csa_chandef;
925
926 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
927 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
928
929 /* context reservation -- protected with chanctx_mtx */
930 struct ieee80211_chanctx *reserved_chanctx;
931 struct cfg80211_chan_def reserved_chandef;
932 bool reserved_radar_required;
933 bool reserved_ready;
934
935 /* used to reconfigure hardware SM PS */
936 struct work_struct recalc_smps;
937
938 struct work_struct work;
939 struct sk_buff_head skb_queue;
940
941 u8 needed_rx_chains;
942 enum ieee80211_smps_mode smps_mode;
943
944 int user_power_level; /* in dBm */
945 int ap_power_level; /* in dBm */
946
947 bool radar_required;
948 struct delayed_work dfs_cac_timer_work;
949
950 /*
951 * AP this belongs to: self in AP mode and
952 * corresponding AP in VLAN mode, NULL for
953 * all others (might be needed later in IBSS)
954 */
955 struct ieee80211_if_ap *bss;
956
957 /* bitmap of allowed (non-MCS) rate indexes for rate control */
958 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
959
960 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
961 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
962
963 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
964 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
965
966 /* Beacon frame (non-MCS) rate (as a bitmap) */
967 u32 beacon_rateidx_mask[NUM_NL80211_BANDS];
968 bool beacon_rate_set;
969
970 union {
971 struct ieee80211_if_ap ap;
972 struct ieee80211_if_wds wds;
973 struct ieee80211_if_vlan vlan;
974 struct ieee80211_if_managed mgd;
975 struct ieee80211_if_ibss ibss;
976 struct ieee80211_if_mesh mesh;
977 struct ieee80211_if_ocb ocb;
978 struct ieee80211_if_mntr mntr;
979 struct ieee80211_if_nan nan;
980 } u;
981
982#ifdef CONFIG_MAC80211_DEBUGFS
983 struct {
984 struct dentry *subdir_stations;
985 struct dentry *default_unicast_key;
986 struct dentry *default_multicast_key;
987 struct dentry *default_mgmt_key;
988 struct dentry *default_beacon_key;
989 } debugfs;
990#endif
991
992 bool hw_80211_encap;
993
994 /* must be last, dynamically sized area in this! */
995 struct ieee80211_vif vif;
996};
997
998static inline
999struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
1000{
1001 return container_of(p, struct ieee80211_sub_if_data, vif);
1002}
1003
1004static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
1005 __acquires(&sdata->wdev.mtx)
1006{
1007 mutex_lock(&sdata->wdev.mtx);
1008 __acquire(&sdata->wdev.mtx);
1009}
1010
1011static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
1012 __releases(&sdata->wdev.mtx)
1013{
1014 mutex_unlock(&sdata->wdev.mtx);
1015 __release(&sdata->wdev.mtx);
1016}
1017
1018#define sdata_dereference(p, sdata) \
1019 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
1020
1021static inline void
1022sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
1023{
1024 lockdep_assert_held(&sdata->wdev.mtx);
1025}
1026
1027static inline int
1028ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1029{
1030 switch (chandef->width) {
1031 case NL80211_CHAN_WIDTH_5:
1032 return 2;
1033 case NL80211_CHAN_WIDTH_10:
1034 return 1;
1035 default:
1036 return 0;
1037 }
1038}
1039
1040static inline int
1041ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1042{
1043 struct ieee80211_chanctx_conf *chanctx_conf;
1044 int shift = 0;
1045
1046 rcu_read_lock();
1047 chanctx_conf = rcu_dereference(vif->chanctx_conf);
1048 if (chanctx_conf)
1049 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1050 rcu_read_unlock();
1051
1052 return shift;
1053}
1054
1055enum {
1056 IEEE80211_RX_MSG = 1,
1057 IEEE80211_TX_STATUS_MSG = 2,
1058};
1059
1060enum queue_stop_reason {
1061 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1062 IEEE80211_QUEUE_STOP_REASON_PS,
1063 IEEE80211_QUEUE_STOP_REASON_CSA,
1064 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1065 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1066 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1067 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1068 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1069 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1070 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1071
1072 IEEE80211_QUEUE_STOP_REASONS,
1073};
1074
1075#ifdef CONFIG_MAC80211_LEDS
1076struct tpt_led_trigger {
1077 char name[32];
1078 const struct ieee80211_tpt_blink *blink_table;
1079 unsigned int blink_table_len;
1080 struct timer_list timer;
1081 struct ieee80211_local *local;
1082 unsigned long prev_traffic;
1083 unsigned long tx_bytes, rx_bytes;
1084 unsigned int active, want;
1085 bool running;
1086};
1087#endif
1088
1089/**
1090 * mac80211 scan flags - currently active scan mode
1091 *
1092 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1093 * well be on the operating channel
1094 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1095 * determine if we are on the operating channel or not
1096 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1097 * channel. This should not interrupt normal traffic.
1098 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1099 * that the scan completed.
1100 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1101 * a scan complete for an aborted scan.
1102 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1103 * cancelled.
1104 */
1105enum {
1106 SCAN_SW_SCANNING,
1107 SCAN_HW_SCANNING,
1108 SCAN_ONCHANNEL_SCANNING,
1109 SCAN_COMPLETED,
1110 SCAN_ABORTED,
1111 SCAN_HW_CANCELLED,
1112};
1113
1114/**
1115 * enum mac80211_scan_state - scan state machine states
1116 *
1117 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1118 * determines if we should keep on scanning or switch back to the
1119 * operating channel
1120 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1121 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1122 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1123 * send out data
1124 * @SCAN_RESUME: Resume the scan and scan the next channel
1125 * @SCAN_ABORT: Abort the scan and go back to operating channel
1126 */
1127enum mac80211_scan_state {
1128 SCAN_DECISION,
1129 SCAN_SET_CHANNEL,
1130 SCAN_SEND_PROBE,
1131 SCAN_SUSPEND,
1132 SCAN_RESUME,
1133 SCAN_ABORT,
1134};
1135
1136struct ieee80211_local {
1137 /* embed the driver visible part.
1138 * don't cast (use the static inlines below), but we keep
1139 * it first anyway so they become a no-op */
1140 struct ieee80211_hw hw;
1141
1142 struct fq fq;
1143 struct codel_vars *cvars;
1144 struct codel_params cparams;
1145
1146 /* protects active_txqs and txqi->schedule_order */
1147 spinlock_t active_txq_lock[IEEE80211_NUM_ACS];
1148 struct list_head active_txqs[IEEE80211_NUM_ACS];
1149 u16 schedule_round[IEEE80211_NUM_ACS];
1150
1151 u16 airtime_flags;
1152 u32 aql_txq_limit_low[IEEE80211_NUM_ACS];
1153 u32 aql_txq_limit_high[IEEE80211_NUM_ACS];
1154 u32 aql_threshold;
1155 atomic_t aql_total_pending_airtime;
1156
1157 const struct ieee80211_ops *ops;
1158
1159 /*
1160 * private workqueue to mac80211. mac80211 makes this accessible
1161 * via ieee80211_queue_work()
1162 */
1163 struct workqueue_struct *workqueue;
1164
1165 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1166 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1167 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1168 spinlock_t queue_stop_reason_lock;
1169
1170 int open_count;
1171 int monitors, cooked_mntrs;
1172 /* number of interfaces with corresponding FIF_ flags */
1173 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1174 fif_probe_req;
1175 bool probe_req_reg;
1176 bool rx_mcast_action_reg;
1177 unsigned int filter_flags; /* FIF_* */
1178
1179 bool wiphy_ciphers_allocated;
1180
1181 bool use_chanctx;
1182
1183 /* protects the aggregated multicast list and filter calls */
1184 spinlock_t filter_lock;
1185
1186 /* used for uploading changed mc list */
1187 struct work_struct reconfig_filter;
1188
1189 /* aggregated multicast list */
1190 struct netdev_hw_addr_list mc_list;
1191
1192 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1193
1194 /*
1195 * suspended is true if we finished all the suspend _and_ we have
1196 * not yet come up from resume. This is to be used by mac80211
1197 * to ensure driver sanity during suspend and mac80211's own
1198 * sanity. It can eventually be used for WoW as well.
1199 */
1200 bool suspended;
1201
1202 /*
1203 * Resuming is true while suspended, but when we're reprogramming the
1204 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1205 * again even though some other parts of the stack are still suspended
1206 * and we still drop received frames to avoid waking the stack.
1207 */
1208 bool resuming;
1209
1210 /*
1211 * quiescing is true during the suspend process _only_ to
1212 * ease timer cancelling etc.
1213 */
1214 bool quiescing;
1215
1216 /* device is started */
1217 bool started;
1218
1219 /* device is during a HW reconfig */
1220 bool in_reconfig;
1221
1222 /* wowlan is enabled -- don't reconfig on resume */
1223 bool wowlan;
1224
1225 struct work_struct radar_detected_work;
1226
1227 /* number of RX chains the hardware has */
1228 u8 rx_chains;
1229
1230 /* bitmap of which sbands were copied */
1231 u8 sband_allocated;
1232
1233 int tx_headroom; /* required headroom for hardware/radiotap */
1234
1235 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1236 * added to skb_queue will be processed, but frames in
1237 * skb_queue_unreliable may be dropped if the total length of these
1238 * queues increases over the limit. */
1239#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1240 struct tasklet_struct tasklet;
1241 struct sk_buff_head skb_queue;
1242 struct sk_buff_head skb_queue_unreliable;
1243
1244 spinlock_t rx_path_lock;
1245
1246 /* Station data */
1247 /*
1248 * The mutex only protects the list, hash table and
1249 * counter, reads are done with RCU.
1250 */
1251 struct mutex sta_mtx;
1252 spinlock_t tim_lock;
1253 unsigned long num_sta;
1254 struct list_head sta_list;
1255 struct rhltable sta_hash;
1256 struct timer_list sta_cleanup;
1257 int sta_generation;
1258
1259 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1260 struct tasklet_struct tx_pending_tasklet;
1261 struct tasklet_struct wake_txqs_tasklet;
1262
1263 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1264
1265 /* number of interfaces with allmulti RX */
1266 atomic_t iff_allmultis;
1267
1268 struct rate_control_ref *rate_ctrl;
1269
1270 struct arc4_ctx wep_tx_ctx;
1271 struct arc4_ctx wep_rx_ctx;
1272 u32 wep_iv;
1273
1274 /* see iface.c */
1275 struct list_head interfaces;
1276 struct list_head mon_list; /* only that are IFF_UP && !cooked */
1277 struct mutex iflist_mtx;
1278
1279 /*
1280 * Key mutex, protects sdata's key_list and sta_info's
1281 * key pointers and ptk_idx (write access, they're RCU.)
1282 */
1283 struct mutex key_mtx;
1284
1285 /* mutex for scan and work locking */
1286 struct mutex mtx;
1287
1288 /* Scanning and BSS list */
1289 unsigned long scanning;
1290 struct cfg80211_ssid scan_ssid;
1291 struct cfg80211_scan_request *int_scan_req;
1292 struct cfg80211_scan_request __rcu *scan_req;
1293 struct ieee80211_scan_request *hw_scan_req;
1294 struct cfg80211_chan_def scan_chandef;
1295 enum nl80211_band hw_scan_band;
1296 int scan_channel_idx;
1297 int scan_ies_len;
1298 int hw_scan_ies_bufsize;
1299 struct cfg80211_scan_info scan_info;
1300
1301 struct work_struct sched_scan_stopped_work;
1302 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1303 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1304 u8 scan_addr[ETH_ALEN];
1305
1306 unsigned long leave_oper_channel_time;
1307 enum mac80211_scan_state next_scan_state;
1308 struct delayed_work scan_work;
1309 struct ieee80211_sub_if_data __rcu *scan_sdata;
1310 /* For backward compatibility only -- do not use */
1311 struct cfg80211_chan_def _oper_chandef;
1312
1313 /* Temporary remain-on-channel for off-channel operations */
1314 struct ieee80211_channel *tmp_channel;
1315
1316 /* channel contexts */
1317 struct list_head chanctx_list;
1318 struct mutex chanctx_mtx;
1319
1320#ifdef CONFIG_MAC80211_LEDS
1321 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1322 struct led_trigger tpt_led;
1323 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1324 atomic_t radio_led_active, tpt_led_active;
1325 struct tpt_led_trigger *tpt_led_trigger;
1326#endif
1327
1328#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1329 /* SNMP counters */
1330 /* dot11CountersTable */
1331 u32 dot11TransmittedFragmentCount;
1332 u32 dot11MulticastTransmittedFrameCount;
1333 u32 dot11FailedCount;
1334 u32 dot11RetryCount;
1335 u32 dot11MultipleRetryCount;
1336 u32 dot11FrameDuplicateCount;
1337 u32 dot11ReceivedFragmentCount;
1338 u32 dot11MulticastReceivedFrameCount;
1339 u32 dot11TransmittedFrameCount;
1340
1341 /* TX/RX handler statistics */
1342 unsigned int tx_handlers_drop;
1343 unsigned int tx_handlers_queued;
1344 unsigned int tx_handlers_drop_wep;
1345 unsigned int tx_handlers_drop_not_assoc;
1346 unsigned int tx_handlers_drop_unauth_port;
1347 unsigned int rx_handlers_drop;
1348 unsigned int rx_handlers_queued;
1349 unsigned int rx_handlers_drop_nullfunc;
1350 unsigned int rx_handlers_drop_defrag;
1351 unsigned int tx_expand_skb_head;
1352 unsigned int tx_expand_skb_head_cloned;
1353 unsigned int rx_expand_skb_head_defrag;
1354 unsigned int rx_handlers_fragments;
1355 unsigned int tx_status_drop;
1356#define I802_DEBUG_INC(c) (c)++
1357#else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1358#define I802_DEBUG_INC(c) do { } while (0)
1359#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1360
1361
1362 int total_ps_buffered; /* total number of all buffered unicast and
1363 * multicast packets for power saving stations
1364 */
1365
1366 bool pspolling;
1367 bool offchannel_ps_enabled;
1368 /*
1369 * PS can only be enabled when we have exactly one managed
1370 * interface (and monitors) in PS, this then points there.
1371 */
1372 struct ieee80211_sub_if_data *ps_sdata;
1373 struct work_struct dynamic_ps_enable_work;
1374 struct work_struct dynamic_ps_disable_work;
1375 struct timer_list dynamic_ps_timer;
1376 struct notifier_block ifa_notifier;
1377 struct notifier_block ifa6_notifier;
1378
1379 /*
1380 * The dynamic ps timeout configured from user space via WEXT -
1381 * this will override whatever chosen by mac80211 internally.
1382 */
1383 int dynamic_ps_forced_timeout;
1384
1385 int user_power_level; /* in dBm, for all interfaces */
1386
1387 enum ieee80211_smps_mode smps_mode;
1388
1389 struct work_struct restart_work;
1390
1391#ifdef CONFIG_MAC80211_DEBUGFS
1392 struct local_debugfsdentries {
1393 struct dentry *rcdir;
1394 struct dentry *keys;
1395 } debugfs;
1396 bool force_tx_status;
1397#endif
1398
1399 /*
1400 * Remain-on-channel support
1401 */
1402 struct delayed_work roc_work;
1403 struct list_head roc_list;
1404 struct work_struct hw_roc_start, hw_roc_done;
1405 unsigned long hw_roc_start_time;
1406 u64 roc_cookie_counter;
1407
1408 struct idr ack_status_frames;
1409 spinlock_t ack_status_lock;
1410
1411 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1412
1413 /* virtual monitor interface */
1414 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1415 struct cfg80211_chan_def monitor_chandef;
1416
1417 /* extended capabilities provided by mac80211 */
1418 u8 ext_capa[8];
1419
1420 /* TDLS channel switch */
1421 struct work_struct tdls_chsw_work;
1422 struct sk_buff_head skb_queue_tdls_chsw;
1423};
1424
1425static inline struct ieee80211_sub_if_data *
1426IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1427{
1428 return netdev_priv(dev);
1429}
1430
1431static inline struct ieee80211_sub_if_data *
1432IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1433{
1434 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1435}
1436
1437static inline struct ieee80211_supported_band *
1438ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1439{
1440 struct ieee80211_local *local = sdata->local;
1441 struct ieee80211_chanctx_conf *chanctx_conf;
1442 enum nl80211_band band;
1443
1444 rcu_read_lock();
1445 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1446
1447 if (WARN_ON_ONCE(!chanctx_conf)) {
1448 rcu_read_unlock();
1449 return NULL;
1450 }
1451
1452 band = chanctx_conf->def.chan->band;
1453 rcu_read_unlock();
1454
1455 return local->hw.wiphy->bands[band];
1456}
1457
1458/* this struct holds the value parsing from channel switch IE */
1459struct ieee80211_csa_ie {
1460 struct cfg80211_chan_def chandef;
1461 u8 mode;
1462 u8 count;
1463 u8 ttl;
1464 u16 pre_value;
1465 u16 reason_code;
1466 u32 max_switch_time;
1467};
1468
1469/* Parsed Information Elements */
1470struct ieee802_11_elems {
1471 const u8 *ie_start;
1472 size_t total_len;
1473
1474 /* pointers to IEs */
1475 const struct ieee80211_tdls_lnkie *lnk_id;
1476 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1477 const u8 *ext_capab;
1478 const u8 *ssid;
1479 const u8 *supp_rates;
1480 const u8 *ds_params;
1481 const struct ieee80211_tim_ie *tim;
1482 const u8 *challenge;
1483 const u8 *rsn;
1484 const u8 *rsnx;
1485 const u8 *erp_info;
1486 const u8 *ext_supp_rates;
1487 const u8 *wmm_info;
1488 const u8 *wmm_param;
1489 const struct ieee80211_ht_cap *ht_cap_elem;
1490 const struct ieee80211_ht_operation *ht_operation;
1491 const struct ieee80211_vht_cap *vht_cap_elem;
1492 const struct ieee80211_vht_operation *vht_operation;
1493 const struct ieee80211_meshconf_ie *mesh_config;
1494 const u8 *he_cap;
1495 const struct ieee80211_he_operation *he_operation;
1496 const struct ieee80211_he_spr *he_spr;
1497 const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1498 const struct ieee80211_he_6ghz_capa *he_6ghz_capa;
1499 const u8 *uora_element;
1500 const u8 *mesh_id;
1501 const u8 *peering;
1502 const __le16 *awake_window;
1503 const u8 *preq;
1504 const u8 *prep;
1505 const u8 *perr;
1506 const struct ieee80211_rann_ie *rann;
1507 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1508 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1509 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1510 const u8 *max_channel_switch_time;
1511 const u8 *country_elem;
1512 const u8 *pwr_constr_elem;
1513 const u8 *cisco_dtpc_elem;
1514 const struct ieee80211_timeout_interval_ie *timeout_int;
1515 const u8 *opmode_notif;
1516 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1517 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1518 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1519 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
1520 const struct ieee80211_bssid_index *bssid_index;
1521 u8 max_bssid_indicator;
1522 u8 dtim_count;
1523 u8 dtim_period;
1524 const struct ieee80211_addba_ext_ie *addba_ext_ie;
1525
1526 /* length of them, respectively */
1527 u8 ext_capab_len;
1528 u8 ssid_len;
1529 u8 supp_rates_len;
1530 u8 tim_len;
1531 u8 challenge_len;
1532 u8 rsn_len;
1533 u8 rsnx_len;
1534 u8 ext_supp_rates_len;
1535 u8 wmm_info_len;
1536 u8 wmm_param_len;
1537 u8 he_cap_len;
1538 u8 mesh_id_len;
1539 u8 peering_len;
1540 u8 preq_len;
1541 u8 prep_len;
1542 u8 perr_len;
1543 u8 country_elem_len;
1544 u8 bssid_index_len;
1545
1546 /* whether a parse error occurred while retrieving these elements */
1547 bool parse_error;
1548};
1549
1550static inline struct ieee80211_local *hw_to_local(
1551 struct ieee80211_hw *hw)
1552{
1553 return container_of(hw, struct ieee80211_local, hw);
1554}
1555
1556static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1557{
1558 return container_of(txq, struct txq_info, txq);
1559}
1560
1561static inline bool txq_has_queue(struct ieee80211_txq *txq)
1562{
1563 struct txq_info *txqi = to_txq_info(txq);
1564
1565 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1566}
1567
1568static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1569{
1570 return ether_addr_equal(raddr, addr) ||
1571 is_broadcast_ether_addr(raddr);
1572}
1573
1574static inline bool
1575ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1576{
1577 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1578 status->flag & RX_FLAG_MACTIME_END);
1579 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END))
1580 return true;
1581 /* can't handle non-legacy preamble yet */
1582 if (status->flag & RX_FLAG_MACTIME_PLCP_START &&
1583 status->encoding == RX_ENC_LEGACY)
1584 return true;
1585 return false;
1586}
1587
1588void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1589void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1590
1591/* This function returns the number of multicast stations connected to this
1592 * interface. It returns -1 if that number is not tracked, that is for netdevs
1593 * not in AP or AP_VLAN mode or when using 4addr.
1594 */
1595static inline int
1596ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1597{
1598 if (sdata->vif.type == NL80211_IFTYPE_AP)
1599 return atomic_read(&sdata->u.ap.num_mcast_sta);
1600 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1601 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1602 return -1;
1603}
1604
1605u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1606 struct ieee80211_rx_status *status,
1607 unsigned int mpdu_len,
1608 unsigned int mpdu_offset);
1609int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1610void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1611void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1612 u32 changed);
1613void ieee80211_configure_filter(struct ieee80211_local *local);
1614u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1615
1616u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1617int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1618 u64 *cookie, gfp_t gfp);
1619
1620void ieee80211_check_fast_rx(struct sta_info *sta);
1621void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1622void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1623void ieee80211_clear_fast_rx(struct sta_info *sta);
1624
1625/* STA code */
1626void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1627int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1628 struct cfg80211_auth_request *req);
1629int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1630 struct cfg80211_assoc_request *req);
1631int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1632 struct cfg80211_deauth_request *req);
1633int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1634 struct cfg80211_disassoc_request *req);
1635void ieee80211_send_pspoll(struct ieee80211_local *local,
1636 struct ieee80211_sub_if_data *sdata);
1637void ieee80211_recalc_ps(struct ieee80211_local *local);
1638void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1639int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1640void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1641void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1642 struct sk_buff *skb);
1643void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1644void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1645void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1646void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1647 __le16 fc, bool acked);
1648void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1649void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1650void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1651
1652/* IBSS code */
1653void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1654void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1655void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1656 const u8 *bssid, const u8 *addr, u32 supp_rates);
1657int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1658 struct cfg80211_ibss_params *params);
1659int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1660void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1661void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1662 struct sk_buff *skb);
1663int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1664 struct cfg80211_csa_settings *csa_settings);
1665int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1666void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1667
1668/* OCB code */
1669void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1670void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1671 const u8 *bssid, const u8 *addr, u32 supp_rates);
1672void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1673int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1674 struct ocb_setup *setup);
1675int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1676
1677/* mesh code */
1678void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1679void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1680 struct sk_buff *skb);
1681int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1682 struct cfg80211_csa_settings *csa_settings);
1683int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1684
1685/* scan/BSS handling */
1686void ieee80211_scan_work(struct work_struct *work);
1687int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1688 const u8 *ssid, u8 ssid_len,
1689 struct ieee80211_channel **channels,
1690 unsigned int n_channels,
1691 enum nl80211_bss_scan_width scan_width);
1692int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1693 struct cfg80211_scan_request *req);
1694void ieee80211_scan_cancel(struct ieee80211_local *local);
1695void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1696void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1697
1698void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1699struct ieee80211_bss *
1700ieee80211_bss_info_update(struct ieee80211_local *local,
1701 struct ieee80211_rx_status *rx_status,
1702 struct ieee80211_mgmt *mgmt,
1703 size_t len,
1704 struct ieee80211_channel *channel);
1705void ieee80211_rx_bss_put(struct ieee80211_local *local,
1706 struct ieee80211_bss *bss);
1707
1708/* scheduled scan handling */
1709int
1710__ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1711 struct cfg80211_sched_scan_request *req);
1712int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1713 struct cfg80211_sched_scan_request *req);
1714int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1715void ieee80211_sched_scan_end(struct ieee80211_local *local);
1716void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1717
1718/* off-channel/mgmt-tx */
1719void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1720void ieee80211_offchannel_return(struct ieee80211_local *local);
1721void ieee80211_roc_setup(struct ieee80211_local *local);
1722void ieee80211_start_next_roc(struct ieee80211_local *local);
1723void ieee80211_roc_purge(struct ieee80211_local *local,
1724 struct ieee80211_sub_if_data *sdata);
1725int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1726 struct ieee80211_channel *chan,
1727 unsigned int duration, u64 *cookie);
1728int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1729 struct wireless_dev *wdev, u64 cookie);
1730int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1731 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1732int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1733 struct wireless_dev *wdev, u64 cookie);
1734
1735/* channel switch handling */
1736void ieee80211_csa_finalize_work(struct work_struct *work);
1737int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1738 struct cfg80211_csa_settings *params);
1739
1740/* interface handling */
1741#define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
1742 NETIF_F_HW_CSUM | NETIF_F_SG | \
1743 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE)
1744#define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM)
1745#define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \
1746 MAC80211_SUPPORTED_FEATURES_RX)
1747
1748int ieee80211_iface_init(void);
1749void ieee80211_iface_exit(void);
1750int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1751 unsigned char name_assign_type,
1752 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1753 struct vif_params *params);
1754int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1755 enum nl80211_iftype type);
1756void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1757void ieee80211_remove_interfaces(struct ieee80211_local *local);
1758u32 ieee80211_idle_off(struct ieee80211_local *local);
1759void ieee80211_recalc_idle(struct ieee80211_local *local);
1760void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1761 const int offset);
1762int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1763void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1764int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1765void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1766
1767bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1768void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1769 bool update_bss);
1770
1771static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1772{
1773 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1774}
1775
1776/* tx handling */
1777void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1778void ieee80211_tx_pending(unsigned long data);
1779netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1780 struct net_device *dev);
1781netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1782 struct net_device *dev);
1783netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb,
1784 struct net_device *dev);
1785void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1786 struct net_device *dev,
1787 u32 info_flags,
1788 u32 ctrl_flags,
1789 u64 *cookie);
1790void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1791 struct sk_buff_head *skbs);
1792struct sk_buff *
1793ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1794 struct sk_buff *skb, u32 info_flags);
1795void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1796 struct ieee80211_supported_band *sband,
1797 int retry_count, int shift, bool send_to_cooked,
1798 struct ieee80211_tx_status *status);
1799
1800void ieee80211_check_fast_xmit(struct sta_info *sta);
1801void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1802void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1803void ieee80211_clear_fast_xmit(struct sta_info *sta);
1804int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
1805 const u8 *buf, size_t len,
1806 const u8 *dest, __be16 proto, bool unencrypted,
1807 u64 *cookie);
1808int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
1809 const u8 *buf, size_t len);
1810
1811/* HT */
1812void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1813 struct ieee80211_sta_ht_cap *ht_cap);
1814bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1815 struct ieee80211_supported_band *sband,
1816 const struct ieee80211_ht_cap *ht_cap_ie,
1817 struct sta_info *sta);
1818void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1819 const u8 *da, u16 tid,
1820 u16 initiator, u16 reason_code);
1821int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1822 enum ieee80211_smps_mode smps, const u8 *da,
1823 const u8 *bssid);
1824void ieee80211_request_smps_ap_work(struct work_struct *work);
1825void ieee80211_request_smps_mgd_work(struct work_struct *work);
1826bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1827 enum ieee80211_smps_mode smps_mode_new);
1828
1829void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1830 u16 initiator, u16 reason, bool stop);
1831void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1832 u16 initiator, u16 reason, bool stop);
1833void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
1834 u8 dialog_token, u16 timeout,
1835 u16 start_seq_num, u16 ba_policy, u16 tid,
1836 u16 buf_size, bool tx, bool auto_seq,
1837 const struct ieee80211_addba_ext_ie *addbaext);
1838void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1839 enum ieee80211_agg_stop_reason reason);
1840void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1841 struct sta_info *sta,
1842 struct ieee80211_mgmt *mgmt, size_t len);
1843void ieee80211_process_addba_resp(struct ieee80211_local *local,
1844 struct sta_info *sta,
1845 struct ieee80211_mgmt *mgmt,
1846 size_t len);
1847void ieee80211_process_addba_request(struct ieee80211_local *local,
1848 struct sta_info *sta,
1849 struct ieee80211_mgmt *mgmt,
1850 size_t len);
1851
1852int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1853 enum ieee80211_agg_stop_reason reason);
1854int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1855 enum ieee80211_agg_stop_reason reason);
1856void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
1857 struct tid_ampdu_tx *tid_tx);
1858void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
1859 struct tid_ampdu_tx *tid_tx);
1860void ieee80211_ba_session_work(struct work_struct *work);
1861void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1862void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1863
1864u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1865enum nl80211_smps_mode
1866ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
1867
1868/* VHT */
1869void
1870ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1871 struct ieee80211_supported_band *sband,
1872 const struct ieee80211_vht_cap *vht_cap_ie,
1873 struct sta_info *sta);
1874enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1875enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1876void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1877enum ieee80211_sta_rx_bandwidth
1878ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
1879enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
1880void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1881void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
1882 struct ieee80211_mgmt *mgmt);
1883u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1884 struct sta_info *sta, u8 opmode,
1885 enum nl80211_band band);
1886void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1887 struct sta_info *sta, u8 opmode,
1888 enum nl80211_band band);
1889void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1890 struct ieee80211_sta_vht_cap *vht_cap);
1891void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
1892 u16 vht_mask[NL80211_VHT_NSS_MAX]);
1893enum nl80211_chan_width
1894ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta);
1895
1896/* HE */
1897void
1898ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
1899 struct ieee80211_supported_band *sband,
1900 const u8 *he_cap_ie, u8 he_cap_len,
1901 const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
1902 struct sta_info *sta);
1903void
1904ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
1905 const struct ieee80211_he_spr *he_spr_ie_elem);
1906
1907void
1908ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
1909 const struct ieee80211_he_operation *he_op_ie_elem);
1910
1911/* Spectrum management */
1912void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1913 struct ieee80211_mgmt *mgmt,
1914 size_t len);
1915/**
1916 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1917 * @sdata: the sdata of the interface which has received the frame
1918 * @elems: parsed 802.11 elements received with the frame
1919 * @current_band: indicates the current band
1920 * @vht_cap_info: VHT capabilities of the transmitter
1921 * @sta_flags: contains information about own capabilities and restrictions
1922 * to decide which channel switch announcements can be accepted. Only the
1923 * following subset of &enum ieee80211_sta_flags are evaluated:
1924 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1925 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1926 * %IEEE80211_STA_DISABLE_160MHZ.
1927 * @bssid: the currently connected bssid (for reporting)
1928 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1929 All of them will be filled with if success only.
1930 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1931 */
1932int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1933 struct ieee802_11_elems *elems,
1934 enum nl80211_band current_band,
1935 u32 vht_cap_info,
1936 u32 sta_flags, u8 *bssid,
1937 struct ieee80211_csa_ie *csa_ie);
1938
1939/* Suspend/resume and hw reconfiguration */
1940int ieee80211_reconfig(struct ieee80211_local *local);
1941void ieee80211_stop_device(struct ieee80211_local *local);
1942
1943int __ieee80211_suspend(struct ieee80211_hw *hw,
1944 struct cfg80211_wowlan *wowlan);
1945
1946static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1947{
1948 struct ieee80211_local *local = hw_to_local(hw);
1949
1950 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
1951 !test_bit(SCAN_COMPLETED, &local->scanning),
1952 "%s: resume with hardware scan still in progress\n",
1953 wiphy_name(hw->wiphy));
1954
1955 return ieee80211_reconfig(hw_to_local(hw));
1956}
1957
1958/* utility functions/constants */
1959extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1960int ieee80211_frame_duration(enum nl80211_band band, size_t len,
1961 int rate, int erp, int short_preamble,
1962 int shift);
1963void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1964 struct ieee80211_tx_queue_params *qparam,
1965 int ac);
1966void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1967 bool bss_notify, bool enable_qos);
1968void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
1969 struct sta_info *sta, struct sk_buff *skb);
1970
1971void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1972 struct sk_buff *skb, int tid,
1973 enum nl80211_band band);
1974
1975/* sta_out needs to be checked for ERR_PTR() before using */
1976int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata,
1977 struct sk_buff *skb,
1978 struct sta_info **sta_out);
1979
1980static inline void
1981ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1982 struct sk_buff *skb, int tid,
1983 enum nl80211_band band)
1984{
1985 rcu_read_lock();
1986 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1987 rcu_read_unlock();
1988}
1989
1990static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1991 struct sk_buff *skb, int tid)
1992{
1993 struct ieee80211_chanctx_conf *chanctx_conf;
1994
1995 rcu_read_lock();
1996 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1997 if (WARN_ON(!chanctx_conf)) {
1998 rcu_read_unlock();
1999 kfree_skb(skb);
2000 return;
2001 }
2002
2003 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
2004 chanctx_conf->def.chan->band);
2005 rcu_read_unlock();
2006}
2007
2008static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
2009 struct sk_buff *skb)
2010{
2011 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
2012 ieee80211_tx_skb_tid(sdata, skb, 7);
2013}
2014
2015u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
2016 struct ieee802_11_elems *elems,
2017 u64 filter, u32 crc, u8 *transmitter_bssid,
2018 u8 *bss_bssid);
2019static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
2020 bool action,
2021 struct ieee802_11_elems *elems,
2022 u8 *transmitter_bssid,
2023 u8 *bss_bssid)
2024{
2025 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0,
2026 transmitter_bssid, bss_bssid);
2027}
2028
2029
2030extern const int ieee802_1d_to_ac[8];
2031
2032static inline int ieee80211_ac_from_tid(int tid)
2033{
2034 return ieee802_1d_to_ac[tid & 7];
2035}
2036
2037void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
2038void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
2039void ieee80211_dynamic_ps_timer(struct timer_list *t);
2040void ieee80211_send_nullfunc(struct ieee80211_local *local,
2041 struct ieee80211_sub_if_data *sdata,
2042 bool powersave);
2043void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
2044 struct ieee80211_hdr *hdr);
2045void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2046 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
2047
2048void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
2049 unsigned long queues,
2050 enum queue_stop_reason reason,
2051 bool refcounted);
2052void ieee80211_stop_vif_queues(struct ieee80211_local *local,
2053 struct ieee80211_sub_if_data *sdata,
2054 enum queue_stop_reason reason);
2055void ieee80211_wake_vif_queues(struct ieee80211_local *local,
2056 struct ieee80211_sub_if_data *sdata,
2057 enum queue_stop_reason reason);
2058void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
2059 unsigned long queues,
2060 enum queue_stop_reason reason,
2061 bool refcounted);
2062void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
2063 enum queue_stop_reason reason,
2064 bool refcounted);
2065void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
2066 enum queue_stop_reason reason,
2067 bool refcounted);
2068void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
2069void ieee80211_add_pending_skb(struct ieee80211_local *local,
2070 struct sk_buff *skb);
2071void ieee80211_add_pending_skbs(struct ieee80211_local *local,
2072 struct sk_buff_head *skbs);
2073void ieee80211_flush_queues(struct ieee80211_local *local,
2074 struct ieee80211_sub_if_data *sdata, bool drop);
2075void __ieee80211_flush_queues(struct ieee80211_local *local,
2076 struct ieee80211_sub_if_data *sdata,
2077 unsigned int queues, bool drop);
2078
2079static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2080{
2081 /*
2082 * It's unsafe to try to do any work during reconfigure flow.
2083 * When the flow ends the work will be requeued.
2084 */
2085 if (local->in_reconfig)
2086 return false;
2087
2088 /*
2089 * If quiescing is set, we are racing with __ieee80211_suspend.
2090 * __ieee80211_suspend flushes the workers after setting quiescing,
2091 * and we check quiescing / suspended before enqueing new workers.
2092 * We should abort the worker to avoid the races below.
2093 */
2094 if (local->quiescing)
2095 return false;
2096
2097 /*
2098 * We might already be suspended if the following scenario occurs:
2099 * __ieee80211_suspend Control path
2100 *
2101 * if (local->quiescing)
2102 * return;
2103 * local->quiescing = true;
2104 * flush_workqueue();
2105 * queue_work(...);
2106 * local->suspended = true;
2107 * local->quiescing = false;
2108 * worker starts running...
2109 */
2110 if (local->suspended)
2111 return false;
2112
2113 return true;
2114}
2115
2116int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2117void ieee80211_txq_set_params(struct ieee80211_local *local);
2118void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2119void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2120 struct sta_info *sta,
2121 struct txq_info *txq, int tid);
2122void ieee80211_txq_purge(struct ieee80211_local *local,
2123 struct txq_info *txqi);
2124void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2125 struct ieee80211_sub_if_data *sdata);
2126void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2127 struct txq_info *txqi);
2128void ieee80211_wake_txqs(unsigned long data);
2129void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2130 u16 transaction, u16 auth_alg, u16 status,
2131 const u8 *extra, size_t extra_len, const u8 *bssid,
2132 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2133 u32 tx_flags);
2134void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2135 const u8 *da, const u8 *bssid,
2136 u16 stype, u16 reason,
2137 bool send_frame, u8 *frame_buf);
2138
2139enum {
2140 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
2141 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
2142 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
2143};
2144
2145int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2146 size_t buffer_len,
2147 struct ieee80211_scan_ies *ie_desc,
2148 const u8 *ie, size_t ie_len,
2149 u8 bands_used, u32 *rate_masks,
2150 struct cfg80211_chan_def *chandef,
2151 u32 flags);
2152struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2153 const u8 *src, const u8 *dst,
2154 u32 ratemask,
2155 struct ieee80211_channel *chan,
2156 const u8 *ssid, size_t ssid_len,
2157 const u8 *ie, size_t ie_len,
2158 u32 flags);
2159u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2160 struct ieee802_11_elems *elems,
2161 enum nl80211_band band, u32 *basic_rates);
2162int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2163 enum ieee80211_smps_mode smps_mode);
2164void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
2165void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
2166
2167size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2168u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2169 u16 cap);
2170u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2171 const struct cfg80211_chan_def *chandef,
2172 u16 prot_mode, bool rifs_mode);
2173void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2174 const struct cfg80211_chan_def *chandef);
2175u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2176 u32 cap);
2177u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2178 const struct cfg80211_chan_def *chandef);
2179u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2180u8 *ieee80211_ie_build_he_cap(u8 *pos,
2181 const struct ieee80211_sta_he_cap *he_cap,
2182 u8 *end);
2183void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2184 struct sk_buff *skb);
2185u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef);
2186int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2187 const struct ieee80211_supported_band *sband,
2188 const u8 *srates, int srates_len, u32 *rates);
2189int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2190 struct sk_buff *skb, bool need_basic,
2191 enum nl80211_band band);
2192int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2193 struct sk_buff *skb, bool need_basic,
2194 enum nl80211_band band);
2195u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2196
2197/* channel management */
2198bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2199 struct cfg80211_chan_def *chandef);
2200bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
2201 const struct ieee80211_vht_operation *oper,
2202 const struct ieee80211_ht_operation *htop,
2203 struct cfg80211_chan_def *chandef);
2204bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
2205 const struct ieee80211_he_operation *he_oper,
2206 struct cfg80211_chan_def *chandef);
2207u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2208
2209int __must_check
2210ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
2211 const struct cfg80211_chan_def *chandef,
2212 enum ieee80211_chanctx_mode mode);
2213int __must_check
2214ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
2215 const struct cfg80211_chan_def *chandef,
2216 enum ieee80211_chanctx_mode mode,
2217 bool radar_required);
2218int __must_check
2219ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2220int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2221
2222int __must_check
2223ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2224 const struct cfg80211_chan_def *chandef,
2225 u32 *changed);
2226void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2227void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2228void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2229 bool clear);
2230int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2231 struct ieee80211_chanctx *ctx);
2232
2233void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2234 struct ieee80211_chanctx *chanctx);
2235void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2236 struct ieee80211_chanctx *ctx);
2237bool ieee80211_is_radar_required(struct ieee80211_local *local);
2238
2239void ieee80211_dfs_cac_timer(unsigned long data);
2240void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2241void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2242void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2243int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2244 struct cfg80211_csa_settings *csa_settings);
2245
2246bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2247bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2248const struct ieee80211_cipher_scheme *
2249ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2250 enum nl80211_iftype iftype);
2251int ieee80211_cs_headroom(struct ieee80211_local *local,
2252 struct cfg80211_crypto_settings *crypto,
2253 enum nl80211_iftype iftype);
2254void ieee80211_recalc_dtim(struct ieee80211_local *local,
2255 struct ieee80211_sub_if_data *sdata);
2256int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2257 const struct cfg80211_chan_def *chandef,
2258 enum ieee80211_chanctx_mode chanmode,
2259 u8 radar_detect);
2260int ieee80211_max_num_channels(struct ieee80211_local *local);
2261enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta);
2262void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2263 struct ieee80211_chanctx *ctx);
2264
2265/* TDLS */
2266int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2267 const u8 *peer, u8 action_code, u8 dialog_token,
2268 u16 status_code, u32 peer_capability,
2269 bool initiator, const u8 *extra_ies,
2270 size_t extra_ies_len);
2271int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2272 const u8 *peer, enum nl80211_tdls_operation oper);
2273void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2274int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2275 const u8 *addr, u8 oper_class,
2276 struct cfg80211_chan_def *chandef);
2277void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2278 struct net_device *dev,
2279 const u8 *addr);
2280void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2281void ieee80211_tdls_chsw_work(struct work_struct *wk);
2282void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2283 const u8 *peer, u16 reason);
2284const char *ieee80211_get_reason_code_string(u16 reason_code);
2285
2286extern const struct ethtool_ops ieee80211_ethtool_ops;
2287
2288u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw,
2289 struct ieee80211_vif *vif,
2290 struct ieee80211_sta *pubsta,
2291 int len, bool ampdu);
2292#ifdef CONFIG_MAC80211_NOINLINE
2293#define debug_noinline noinline
2294#else
2295#define debug_noinline
2296#endif
2297
2298#endif /* IEEE80211_I_H */