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) 2018-2022 Intel Corporation
9 */
10
11 #ifndef IEEE80211_I_H
12 #define IEEE80211_I_H
13
14 #include <linux/kernel.h>
15 #include <linux/device.h>
16 #include <linux/if_ether.h>
17 #include <linux/interrupt.h>
18 #include <linux/list.h>
19 #include <linux/netdevice.h>
20 #include <linux/skbuff.h>
21 #include <linux/workqueue.h>
22 #include <linux/types.h>
23 #include <linux/spinlock.h>
24 #include <linux/etherdevice.h>
25 #include <linux/leds.h>
26 #include <linux/idr.h>
27 #include <linux/rhashtable.h>
28 #include <linux/rbtree.h>
29 #include <net/ieee80211_radiotap.h>
30 #include <net/cfg80211.h>
31 #include <net/mac80211.h>
32 #include <net/fq.h>
33 #include "key.h"
34 #include "sta_info.h"
35 #include "debug.h"
36
37 extern const struct cfg80211_ops mac80211_config_ops;
38
39 struct ieee80211_local;
40
41 /* Maximum number of broadcast/multicast frames to buffer when some of the
42 * associated stations are using power saving. */
43 #define AP_MAX_BC_BUFFER 128
44
45 /* Maximum number of frames buffered to all STAs, including multicast frames.
46 * Note: increasing this limit increases the potential memory requirement. Each
47 * frame can be up to about 2 kB long. */
48 #define TOTAL_MAX_TX_BUFFER 512
49
50 /* Required encryption head and tailroom */
51 #define IEEE80211_ENCRYPT_HEADROOM 8
52 #define IEEE80211_ENCRYPT_TAILROOM 18
53
54 /* power level hasn't been configured (or set to automatic) */
55 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
56
57 /*
58 * Some APs experience problems when working with U-APSD. Decreasing the
59 * probability of that happening by using legacy mode for all ACs but VO isn't
60 * enough.
61 *
62 * Cisco 4410N originally forced us to enable VO by default only because it
63 * treated non-VO ACs as legacy.
64 *
65 * However some APs (notably Netgear R7000) silently reclassify packets to
66 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
67 * clients would never see some frames (e.g. ARP responses) or would fetch them
68 * accidentally after a long time.
69 *
70 * It makes little sense to enable u-APSD queues by default because it needs
71 * userspace applications to be aware of it to actually take advantage of the
72 * possible additional powersavings. Implicitly depending on driver autotrigger
73 * frame support doesn't make much sense.
74 */
75 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
76
77 #define IEEE80211_DEFAULT_MAX_SP_LEN \
78 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
79
80 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS];
81
82 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
83
84 #define IEEE80211_MAX_NAN_INSTANCE_ID 255
85
86
87 /*
88 * Keep a station's queues on the active list for deficit accounting purposes
89 * if it was active or queued during the last 100ms
90 */
91 #define AIRTIME_ACTIVE_DURATION (HZ / 10)
92
93 struct ieee80211_bss {
94 u32 device_ts_beacon, device_ts_presp;
95
96 bool wmm_used;
97 bool uapsd_supported;
98
99 #define IEEE80211_MAX_SUPP_RATES 32
100 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
101 size_t supp_rates_len;
102 struct ieee80211_rate *beacon_rate;
103
104 u32 vht_cap_info;
105
106 /*
107 * During association, we save an ERP value from a probe response so
108 * that we can feed ERP info to the driver when handling the
109 * association completes. these fields probably won't be up-to-date
110 * otherwise, you probably don't want to use them.
111 */
112 bool has_erp_value;
113 u8 erp_value;
114
115 /* Keep track of the corruption of the last beacon/probe response. */
116 u8 corrupt_data;
117
118 /* Keep track of what bits of information we have valid info for. */
119 u8 valid_data;
120 };
121
122 /**
123 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
124 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
125 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
126 *
127 * These are bss flags that are attached to a bss in the
128 * @corrupt_data field of &struct ieee80211_bss.
129 */
130 enum ieee80211_bss_corrupt_data_flags {
131 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
132 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
133 };
134
135 /**
136 * enum ieee80211_valid_data_flags - BSS valid data flags
137 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
138 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
139 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
140 *
141 * These are bss flags that are attached to a bss in the
142 * @valid_data field of &struct ieee80211_bss. They show which parts
143 * of the data structure were received as a result of an un-corrupted
144 * beacon/probe response.
145 */
146 enum ieee80211_bss_valid_data_flags {
147 IEEE80211_BSS_VALID_WMM = BIT(1),
148 IEEE80211_BSS_VALID_RATES = BIT(2),
149 IEEE80211_BSS_VALID_ERP = BIT(3)
150 };
151
152 typedef unsigned __bitwise ieee80211_tx_result;
153 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
154 #define TX_DROP ((__force ieee80211_tx_result) 1u)
155 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
156
157 #define IEEE80211_TX_UNICAST BIT(1)
158 #define IEEE80211_TX_PS_BUFFERED BIT(2)
159
160 struct ieee80211_tx_data {
161 struct sk_buff *skb;
162 struct sk_buff_head skbs;
163 struct ieee80211_local *local;
164 struct ieee80211_sub_if_data *sdata;
165 struct sta_info *sta;
166 struct ieee80211_key *key;
167 struct ieee80211_tx_rate rate;
168
169 unsigned int flags;
170 };
171
172
173 typedef unsigned __bitwise ieee80211_rx_result;
174 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
175 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
176 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
177 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
178
179 /**
180 * enum ieee80211_packet_rx_flags - packet RX flags
181 * @IEEE80211_RX_AMSDU: a-MSDU packet
182 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
183 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
184 *
185 * These are per-frame flags that are attached to a frame in the
186 * @rx_flags field of &struct ieee80211_rx_status.
187 */
188 enum ieee80211_packet_rx_flags {
189 IEEE80211_RX_AMSDU = BIT(3),
190 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
191 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
192 };
193
194 /**
195 * enum ieee80211_rx_flags - RX data flags
196 *
197 * @IEEE80211_RX_CMNTR: received on cooked monitor already
198 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
199 * to cfg80211_report_obss_beacon().
200 *
201 * These flags are used across handling multiple interfaces
202 * for a single frame.
203 */
204 enum ieee80211_rx_flags {
205 IEEE80211_RX_CMNTR = BIT(0),
206 IEEE80211_RX_BEACON_REPORTED = BIT(1),
207 };
208
209 struct ieee80211_rx_data {
210 struct list_head *list;
211 struct sk_buff *skb;
212 struct ieee80211_local *local;
213 struct ieee80211_sub_if_data *sdata;
214 struct ieee80211_link_data *link;
215 struct sta_info *sta;
216 struct link_sta_info *link_sta;
217 struct ieee80211_key *key;
218
219 unsigned int flags;
220
221 /*
222 * Index into sequence numbers array, 0..16
223 * since the last (16) is used for non-QoS,
224 * will be 16 on non-QoS frames.
225 */
226 int seqno_idx;
227
228 /*
229 * Index into the security IV/PN arrays, 0..16
230 * since the last (16) is used for CCMP-encrypted
231 * management frames, will be set to 16 on mgmt
232 * frames and 0 on non-QoS frames.
233 */
234 int security_idx;
235
236 int link_id;
237
238 union {
239 struct {
240 u32 iv32;
241 u16 iv16;
242 } tkip;
243 struct {
244 u8 pn[IEEE80211_CCMP_PN_LEN];
245 } ccm_gcm;
246 };
247 };
248
249 struct ieee80211_csa_settings {
250 const u16 *counter_offsets_beacon;
251 const u16 *counter_offsets_presp;
252
253 int n_counter_offsets_beacon;
254 int n_counter_offsets_presp;
255
256 u8 count;
257 };
258
259 struct ieee80211_color_change_settings {
260 u16 counter_offset_beacon;
261 u16 counter_offset_presp;
262 u8 count;
263 };
264
265 struct beacon_data {
266 u8 *head, *tail;
267 int head_len, tail_len;
268 struct ieee80211_meshconf_ie *meshconf;
269 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
270 u8 cntdwn_current_counter;
271 struct cfg80211_mbssid_elems *mbssid_ies;
272 struct rcu_head rcu_head;
273 };
274
275 struct probe_resp {
276 struct rcu_head rcu_head;
277 int len;
278 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
279 u8 data[];
280 };
281
282 struct fils_discovery_data {
283 struct rcu_head rcu_head;
284 int len;
285 u8 data[];
286 };
287
288 struct unsol_bcast_probe_resp_data {
289 struct rcu_head rcu_head;
290 int len;
291 u8 data[];
292 };
293
294 struct ps_data {
295 /* yes, this looks ugly, but guarantees that we can later use
296 * bitmap_empty :)
297 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
298 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
299 __aligned(__alignof__(unsigned long));
300 struct sk_buff_head bc_buf;
301 atomic_t num_sta_ps; /* number of stations in PS mode */
302 int dtim_count;
303 bool dtim_bc_mc;
304 };
305
306 struct ieee80211_if_ap {
307 struct list_head vlans; /* write-protected with RTNL and local->mtx */
308
309 struct ps_data ps;
310 atomic_t num_mcast_sta; /* number of stations receiving multicast */
311
312 bool multicast_to_unicast;
313 bool active;
314 };
315
316 struct ieee80211_if_vlan {
317 struct list_head list; /* write-protected with RTNL and local->mtx */
318
319 /* used for all tx if the VLAN is configured to 4-addr mode */
320 struct sta_info __rcu *sta;
321 atomic_t num_mcast_sta; /* number of stations receiving multicast */
322 };
323
324 struct mesh_stats {
325 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
326 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
327 __u32 fwded_frames; /* Mesh total forwarded frames */
328 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
329 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
330 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
331 };
332
333 #define PREQ_Q_F_START 0x1
334 #define PREQ_Q_F_REFRESH 0x2
335 struct mesh_preq_queue {
336 struct list_head list;
337 u8 dst[ETH_ALEN];
338 u8 flags;
339 };
340
341 struct ieee80211_roc_work {
342 struct list_head list;
343
344 struct ieee80211_sub_if_data *sdata;
345
346 struct ieee80211_channel *chan;
347
348 bool started, abort, hw_begun, notified;
349 bool on_channel;
350
351 unsigned long start_time;
352
353 u32 duration, req_duration;
354 struct sk_buff *frame;
355 u64 cookie, mgmt_tx_cookie;
356 enum ieee80211_roc_type type;
357 };
358
359 /* flags used in struct ieee80211_if_managed.flags */
360 enum ieee80211_sta_flags {
361 IEEE80211_STA_CONNECTION_POLL = BIT(1),
362 IEEE80211_STA_CONTROL_PORT = BIT(2),
363 IEEE80211_STA_MFP_ENABLED = BIT(6),
364 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
365 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
366 IEEE80211_STA_ENABLE_RRM = BIT(15),
367 };
368
369 typedef u32 __bitwise ieee80211_conn_flags_t;
370
371 enum ieee80211_conn_flags {
372 IEEE80211_CONN_DISABLE_HT = (__force ieee80211_conn_flags_t)BIT(0),
373 IEEE80211_CONN_DISABLE_40MHZ = (__force ieee80211_conn_flags_t)BIT(1),
374 IEEE80211_CONN_DISABLE_VHT = (__force ieee80211_conn_flags_t)BIT(2),
375 IEEE80211_CONN_DISABLE_80P80MHZ = (__force ieee80211_conn_flags_t)BIT(3),
376 IEEE80211_CONN_DISABLE_160MHZ = (__force ieee80211_conn_flags_t)BIT(4),
377 IEEE80211_CONN_DISABLE_HE = (__force ieee80211_conn_flags_t)BIT(5),
378 IEEE80211_CONN_DISABLE_EHT = (__force ieee80211_conn_flags_t)BIT(6),
379 IEEE80211_CONN_DISABLE_320MHZ = (__force ieee80211_conn_flags_t)BIT(7),
380 };
381
382 struct ieee80211_mgd_auth_data {
383 struct cfg80211_bss *bss;
384 unsigned long timeout;
385 int tries;
386 u16 algorithm, expected_transaction;
387
388 u8 key[WLAN_KEY_LEN_WEP104];
389 u8 key_len, key_idx;
390 bool done, waiting;
391 bool peer_confirmed;
392 bool timeout_started;
393 int link_id;
394
395 u8 ap_addr[ETH_ALEN] __aligned(2);
396
397 u16 sae_trans, sae_status;
398 size_t data_len;
399 u8 data[];
400 };
401
402 struct ieee80211_mgd_assoc_data {
403 struct {
404 struct cfg80211_bss *bss;
405
406 u8 addr[ETH_ALEN] __aligned(2);
407
408 u8 ap_ht_param;
409
410 struct ieee80211_vht_cap ap_vht_cap;
411
412 size_t elems_len;
413 u8 *elems; /* pointing to inside ie[] below */
414
415 ieee80211_conn_flags_t conn_flags;
416 } link[IEEE80211_MLD_MAX_NUM_LINKS];
417
418 u8 ap_addr[ETH_ALEN] __aligned(2);
419
420 /* this is for a workaround, so we use it only for non-MLO */
421 const u8 *supp_rates;
422 u8 supp_rates_len;
423
424 unsigned long timeout;
425 int tries;
426
427 u8 prev_ap_addr[ETH_ALEN];
428 u8 ssid[IEEE80211_MAX_SSID_LEN];
429 u8 ssid_len;
430 bool wmm, uapsd;
431 bool need_beacon;
432 bool synced;
433 bool timeout_started;
434 bool s1g;
435
436 unsigned int assoc_link_id;
437
438 u8 fils_nonces[2 * FILS_NONCE_LEN];
439 u8 fils_kek[FILS_MAX_KEK_LEN];
440 size_t fils_kek_len;
441
442 size_t ie_len;
443 u8 *ie_pos; /* used to fill ie[] with link[].elems */
444 u8 ie[];
445 };
446
447 struct ieee80211_sta_tx_tspec {
448 /* timestamp of the first packet in the time slice */
449 unsigned long time_slice_start;
450
451 u32 admitted_time; /* in usecs, unlike over the air */
452 u8 tsid;
453 s8 up; /* signed to be able to invalidate with -1 during teardown */
454
455 /* consumed TX time in microseconds in the time slice */
456 u32 consumed_tx_time;
457 enum {
458 TX_TSPEC_ACTION_NONE = 0,
459 TX_TSPEC_ACTION_DOWNGRADE,
460 TX_TSPEC_ACTION_STOP_DOWNGRADE,
461 } action;
462 bool downgraded;
463 };
464
465 DECLARE_EWMA(beacon_signal, 4, 4)
466
467 struct ieee80211_if_managed {
468 struct timer_list timer;
469 struct timer_list conn_mon_timer;
470 struct timer_list bcn_mon_timer;
471 struct work_struct monitor_work;
472 struct work_struct beacon_connection_loss_work;
473 struct work_struct csa_connection_drop_work;
474
475 unsigned long beacon_timeout;
476 unsigned long probe_timeout;
477 int probe_send_count;
478 bool nullfunc_failed;
479 u8 connection_loss:1,
480 driver_disconnect:1,
481 reconnect:1,
482 associated:1;
483
484 struct ieee80211_mgd_auth_data *auth_data;
485 struct ieee80211_mgd_assoc_data *assoc_data;
486
487 bool powersave; /* powersave requested for this iface */
488 bool broken_ap; /* AP is broken -- turn off powersave */
489
490 unsigned int flags;
491
492 bool status_acked;
493 bool status_received;
494 __le16 status_fc;
495
496 enum {
497 IEEE80211_MFP_DISABLED,
498 IEEE80211_MFP_OPTIONAL,
499 IEEE80211_MFP_REQUIRED
500 } mfp; /* management frame protection */
501
502 /*
503 * Bitmask of enabled u-apsd queues,
504 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
505 * to take effect.
506 */
507 unsigned int uapsd_queues;
508
509 /*
510 * Maximum number of buffered frames AP can deliver during a
511 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
512 * Needs a new association to take effect.
513 */
514 unsigned int uapsd_max_sp_len;
515
516 u8 use_4addr;
517
518 /*
519 * State variables for keeping track of RSSI of the AP currently
520 * connected to and informing driver when RSSI has gone
521 * below/above a certain threshold.
522 */
523 int rssi_min_thold, rssi_max_thold;
524
525 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
526 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
527 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
528 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
529 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */
530 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */
531
532 /* TDLS support */
533 u8 tdls_peer[ETH_ALEN] __aligned(2);
534 struct delayed_work tdls_peer_del_work;
535 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
536 struct sk_buff *teardown_skb; /* A copy to send through the AP */
537 spinlock_t teardown_lock; /* To lock changing teardown_skb */
538 bool tdls_wider_bw_prohibited;
539
540 /* WMM-AC TSPEC support */
541 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
542 /* Use a separate work struct so that we can do something here
543 * while the sdata->work is flushing the queues, for example.
544 * otherwise, in scenarios where we hardly get any traffic out
545 * on the BE queue, but there's a lot of VO traffic, we might
546 * get stuck in a downgraded situation and flush takes forever.
547 */
548 struct delayed_work tx_tspec_wk;
549
550 /* Information elements from the last transmitted (Re)Association
551 * Request frame.
552 */
553 u8 *assoc_req_ies;
554 size_t assoc_req_ies_len;
555 };
556
557 struct ieee80211_if_ibss {
558 struct timer_list timer;
559 struct work_struct csa_connection_drop_work;
560
561 unsigned long last_scan_completed;
562
563 u32 basic_rates;
564
565 bool fixed_bssid;
566 bool fixed_channel;
567 bool privacy;
568
569 bool control_port;
570 bool userspace_handles_dfs;
571
572 u8 bssid[ETH_ALEN] __aligned(2);
573 u8 ssid[IEEE80211_MAX_SSID_LEN];
574 u8 ssid_len, ie_len;
575 u8 *ie;
576 struct cfg80211_chan_def chandef;
577
578 unsigned long ibss_join_req;
579 /* probe response/beacon for IBSS */
580 struct beacon_data __rcu *presp;
581
582 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
583 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
584
585 spinlock_t incomplete_lock;
586 struct list_head incomplete_stations;
587
588 enum {
589 IEEE80211_IBSS_MLME_SEARCH,
590 IEEE80211_IBSS_MLME_JOINED,
591 } state;
592 };
593
594 /**
595 * struct ieee80211_if_ocb - OCB mode state
596 *
597 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
598 * @wrkq_flags: OCB deferred task action
599 * @incomplete_lock: delayed STA insertion lock
600 * @incomplete_stations: list of STAs waiting for delayed insertion
601 * @joined: indication if the interface is connected to an OCB network
602 */
603 struct ieee80211_if_ocb {
604 struct timer_list housekeeping_timer;
605 unsigned long wrkq_flags;
606
607 spinlock_t incomplete_lock;
608 struct list_head incomplete_stations;
609
610 bool joined;
611 };
612
613 /**
614 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
615 *
616 * these declarations define the interface, which enables
617 * vendor-specific mesh synchronization
618 *
619 */
620 struct ieee802_11_elems;
621 struct ieee80211_mesh_sync_ops {
622 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, u16 stype,
623 struct ieee80211_mgmt *mgmt, unsigned int len,
624 const struct ieee80211_meshconf_ie *mesh_cfg,
625 struct ieee80211_rx_status *rx_status);
626
627 /* should be called with beacon_data under RCU read lock */
628 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
629 struct beacon_data *beacon);
630 /* add other framework functions here */
631 };
632
633 struct mesh_csa_settings {
634 struct rcu_head rcu_head;
635 struct cfg80211_csa_settings settings;
636 };
637
638 /**
639 * struct mesh_table
640 *
641 * @known_gates: list of known mesh gates and their mpaths by the station. The
642 * gate's mpath may or may not be resolved and active.
643 * @gates_lock: protects updates to known_gates
644 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr
645 * @walk_head: linked list containing all mesh_path objects
646 * @walk_lock: lock protecting walk_head
647 * @entries: number of entries in the table
648 */
649 struct mesh_table {
650 struct hlist_head known_gates;
651 spinlock_t gates_lock;
652 struct rhashtable rhead;
653 struct hlist_head walk_head;
654 spinlock_t walk_lock;
655 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */
656 };
657
658 struct ieee80211_if_mesh {
659 struct timer_list housekeeping_timer;
660 struct timer_list mesh_path_timer;
661 struct timer_list mesh_path_root_timer;
662
663 unsigned long wrkq_flags;
664 unsigned long mbss_changed;
665
666 bool userspace_handles_dfs;
667
668 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
669 size_t mesh_id_len;
670 /* Active Path Selection Protocol Identifier */
671 u8 mesh_pp_id;
672 /* Active Path Selection Metric Identifier */
673 u8 mesh_pm_id;
674 /* Congestion Control Mode Identifier */
675 u8 mesh_cc_id;
676 /* Synchronization Protocol Identifier */
677 u8 mesh_sp_id;
678 /* Authentication Protocol Identifier */
679 u8 mesh_auth_id;
680 /* Local mesh Sequence Number */
681 u32 sn;
682 /* Last used PREQ ID */
683 u32 preq_id;
684 atomic_t mpaths;
685 /* Timestamp of last SN update */
686 unsigned long last_sn_update;
687 /* Time when it's ok to send next PERR */
688 unsigned long next_perr;
689 /* Timestamp of last PREQ sent */
690 unsigned long last_preq;
691 struct mesh_rmc *rmc;
692 spinlock_t mesh_preq_queue_lock;
693 struct mesh_preq_queue preq_queue;
694 int preq_queue_len;
695 struct mesh_stats mshstats;
696 struct mesh_config mshcfg;
697 atomic_t estab_plinks;
698 u32 mesh_seqnum;
699 bool accepting_plinks;
700 int num_gates;
701 struct beacon_data __rcu *beacon;
702 const u8 *ie;
703 u8 ie_len;
704 enum {
705 IEEE80211_MESH_SEC_NONE = 0x0,
706 IEEE80211_MESH_SEC_AUTHED = 0x1,
707 IEEE80211_MESH_SEC_SECURED = 0x2,
708 } security;
709 bool user_mpm;
710 /* Extensible Synchronization Framework */
711 const struct ieee80211_mesh_sync_ops *sync_ops;
712 s64 sync_offset_clockdrift_max;
713 spinlock_t sync_offset_lock;
714 /* mesh power save */
715 enum nl80211_mesh_power_mode nonpeer_pm;
716 int ps_peers_light_sleep;
717 int ps_peers_deep_sleep;
718 struct ps_data ps;
719 /* Channel Switching Support */
720 struct mesh_csa_settings __rcu *csa;
721 enum {
722 IEEE80211_MESH_CSA_ROLE_NONE,
723 IEEE80211_MESH_CSA_ROLE_INIT,
724 IEEE80211_MESH_CSA_ROLE_REPEATER,
725 } csa_role;
726 u8 chsw_ttl;
727 u16 pre_value;
728
729 /* offset from skb->data while building IE */
730 int meshconf_offset;
731
732 struct mesh_table mesh_paths;
733 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */
734 int mesh_paths_generation;
735 int mpp_paths_generation;
736 };
737
738 #ifdef CONFIG_MAC80211_MESH
739 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
740 do { (msh)->mshstats.name++; } while (0)
741 #else
742 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
743 do { } while (0)
744 #endif
745
746 /**
747 * enum ieee80211_sub_if_data_flags - virtual interface flags
748 *
749 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
750 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
751 * associated stations and deliver multicast frames both
752 * back to wireless media and to the local net stack.
753 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
754 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
755 * @IEEE80211_SDATA_DISCONNECT_HW_RESTART: Disconnect after hardware restart
756 * recovery
757 */
758 enum ieee80211_sub_if_data_flags {
759 IEEE80211_SDATA_ALLMULTI = BIT(0),
760 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
761 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
762 IEEE80211_SDATA_IN_DRIVER = BIT(5),
763 IEEE80211_SDATA_DISCONNECT_HW_RESTART = BIT(6),
764 };
765
766 /**
767 * enum ieee80211_sdata_state_bits - virtual interface state bits
768 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
769 * mirrors netif_running() but is separate for interface type
770 * change handling while the interface is up
771 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
772 * mode, so queues are stopped
773 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
774 * to offchannel, reset when offchannel returns
775 */
776 enum ieee80211_sdata_state_bits {
777 SDATA_STATE_RUNNING,
778 SDATA_STATE_OFFCHANNEL,
779 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
780 };
781
782 /**
783 * enum ieee80211_chanctx_mode - channel context configuration mode
784 *
785 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
786 * multiple interfaces
787 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
788 * only by a single interface. This can be used for example for
789 * non-fixed channel IBSS.
790 */
791 enum ieee80211_chanctx_mode {
792 IEEE80211_CHANCTX_SHARED,
793 IEEE80211_CHANCTX_EXCLUSIVE
794 };
795
796 /**
797 * enum ieee80211_chanctx_replace_state - channel context replacement state
798 *
799 * This is used for channel context in-place reservations that require channel
800 * context switch/swap.
801 *
802 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
803 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
804 * by a (not yet registered) channel context pointed by %replace_ctx.
805 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
806 * replaces an existing channel context pointed to by %replace_ctx.
807 */
808 enum ieee80211_chanctx_replace_state {
809 IEEE80211_CHANCTX_REPLACE_NONE,
810 IEEE80211_CHANCTX_WILL_BE_REPLACED,
811 IEEE80211_CHANCTX_REPLACES_OTHER,
812 };
813
814 struct ieee80211_chanctx {
815 struct list_head list;
816 struct rcu_head rcu_head;
817
818 struct list_head assigned_links;
819 struct list_head reserved_links;
820
821 enum ieee80211_chanctx_replace_state replace_state;
822 struct ieee80211_chanctx *replace_ctx;
823
824 enum ieee80211_chanctx_mode mode;
825 bool driver_present;
826
827 struct ieee80211_chanctx_conf conf;
828 };
829
830 struct mac80211_qos_map {
831 struct cfg80211_qos_map qos_map;
832 struct rcu_head rcu_head;
833 };
834
835 enum txq_info_flags {
836 IEEE80211_TXQ_STOP,
837 IEEE80211_TXQ_AMPDU,
838 IEEE80211_TXQ_NO_AMSDU,
839 IEEE80211_TXQ_DIRTY,
840 };
841
842 /**
843 * struct txq_info - per tid queue
844 *
845 * @tin: contains packets split into multiple flows
846 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
847 * a fq_flow which is already owned by a different tin
848 * @def_cvars: codel vars for @def_flow
849 * @frags: used to keep fragments created after dequeue
850 * @schedule_order: used with ieee80211_local->active_txqs
851 * @schedule_round: counter to prevent infinite loops on TXQ scheduling
852 */
853 struct txq_info {
854 struct fq_tin tin;
855 struct codel_vars def_cvars;
856 struct codel_stats cstats;
857
858 u16 schedule_round;
859 struct list_head schedule_order;
860
861 struct sk_buff_head frags;
862
863 unsigned long flags;
864
865 /* keep last! */
866 struct ieee80211_txq txq;
867 };
868
869 struct ieee80211_if_mntr {
870 u32 flags;
871 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
872
873 struct list_head list;
874 };
875
876 /**
877 * struct ieee80211_if_nan - NAN state
878 *
879 * @conf: current NAN configuration
880 * @func_ids: a bitmap of available instance_id's
881 */
882 struct ieee80211_if_nan {
883 struct cfg80211_nan_conf conf;
884
885 /* protects function_inst_ids */
886 spinlock_t func_lock;
887 struct idr function_inst_ids;
888 };
889
890 struct ieee80211_link_data_managed {
891 u8 bssid[ETH_ALEN] __aligned(2);
892
893 u8 dtim_period;
894 enum ieee80211_smps_mode req_smps, /* requested smps mode */
895 driver_smps_mode; /* smps mode request */
896
897 ieee80211_conn_flags_t conn_flags;
898
899 s16 p2p_noa_index;
900
901 bool tdls_chan_switch_prohibited;
902
903 bool have_beacon;
904 bool tracking_signal_avg;
905 bool disable_wmm_tracking;
906 bool operating_11g_mode;
907
908 bool csa_waiting_bcn;
909 bool csa_ignored_same_chan;
910 struct timer_list chswitch_timer;
911 struct work_struct chswitch_work;
912
913 struct work_struct request_smps_work;
914 bool beacon_crc_valid;
915 u32 beacon_crc;
916 struct ewma_beacon_signal ave_beacon_signal;
917 int last_ave_beacon_signal;
918
919 /*
920 * Number of Beacon frames used in ave_beacon_signal. This can be used
921 * to avoid generating less reliable cqm events that would be based
922 * only on couple of received frames.
923 */
924 unsigned int count_beacon_signal;
925
926 /* Number of times beacon loss was invoked. */
927 unsigned int beacon_loss_count;
928
929 /*
930 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
931 * that triggered a cqm event. 0 indicates that no event has been
932 * generated for the current association.
933 */
934 int last_cqm_event_signal;
935
936 int wmm_last_param_set;
937 int mu_edca_last_param_set;
938
939 struct cfg80211_bss *bss;
940 };
941
942 struct ieee80211_link_data_ap {
943 struct beacon_data __rcu *beacon;
944 struct probe_resp __rcu *probe_resp;
945 struct fils_discovery_data __rcu *fils_discovery;
946 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp;
947
948 /* to be used after channel switch. */
949 struct cfg80211_beacon_data *next_beacon;
950 };
951
952 struct ieee80211_link_data {
953 struct ieee80211_sub_if_data *sdata;
954 unsigned int link_id;
955
956 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
957 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
958
959 /* multicast keys only */
960 struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS +
961 NUM_DEFAULT_MGMT_KEYS +
962 NUM_DEFAULT_BEACON_KEYS];
963 struct ieee80211_key __rcu *default_multicast_key;
964 struct ieee80211_key __rcu *default_mgmt_key;
965 struct ieee80211_key __rcu *default_beacon_key;
966
967 struct work_struct csa_finalize_work;
968 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
969
970 bool operating_11g_mode;
971
972 struct cfg80211_chan_def csa_chandef;
973
974 struct work_struct color_change_finalize_work;
975
976 /* context reservation -- protected with chanctx_mtx */
977 struct ieee80211_chanctx *reserved_chanctx;
978 struct cfg80211_chan_def reserved_chandef;
979 bool reserved_radar_required;
980 bool reserved_ready;
981
982 u8 needed_rx_chains;
983 enum ieee80211_smps_mode smps_mode;
984
985 int user_power_level; /* in dBm */
986 int ap_power_level; /* in dBm */
987
988 bool radar_required;
989 struct delayed_work dfs_cac_timer_work;
990
991 union {
992 struct ieee80211_link_data_managed mgd;
993 struct ieee80211_link_data_ap ap;
994 } u;
995
996 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
997
998 struct ieee80211_bss_conf *conf;
999 };
1000
1001 struct ieee80211_sub_if_data {
1002 struct list_head list;
1003
1004 struct wireless_dev wdev;
1005
1006 /* keys */
1007 struct list_head key_list;
1008
1009 /* count for keys needing tailroom space allocation */
1010 int crypto_tx_tailroom_needed_cnt;
1011 int crypto_tx_tailroom_pending_dec;
1012 struct delayed_work dec_tailroom_needed_wk;
1013
1014 struct net_device *dev;
1015 struct ieee80211_local *local;
1016
1017 unsigned int flags;
1018
1019 unsigned long state;
1020
1021 char name[IFNAMSIZ];
1022
1023 struct ieee80211_fragment_cache frags;
1024
1025 /* TID bitmap for NoAck policy */
1026 u16 noack_map;
1027
1028 /* bit field of ACM bits (BIT(802.1D tag)) */
1029 u8 wmm_acm;
1030
1031 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS];
1032 struct ieee80211_key __rcu *default_unicast_key;
1033
1034 u16 sequence_number;
1035 u16 mld_mcast_seq;
1036 __be16 control_port_protocol;
1037 bool control_port_no_encrypt;
1038 bool control_port_no_preauth;
1039 bool control_port_over_nl80211;
1040
1041 atomic_t num_tx_queued;
1042 struct mac80211_qos_map __rcu *qos_map;
1043
1044 /* used to reconfigure hardware SM PS */
1045 struct work_struct recalc_smps;
1046
1047 struct work_struct work;
1048 struct sk_buff_head skb_queue;
1049 struct sk_buff_head status_queue;
1050
1051 /*
1052 * AP this belongs to: self in AP mode and
1053 * corresponding AP in VLAN mode, NULL for
1054 * all others (might be needed later in IBSS)
1055 */
1056 struct ieee80211_if_ap *bss;
1057
1058 /* bitmap of allowed (non-MCS) rate indexes for rate control */
1059 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
1060
1061 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
1062 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
1063
1064 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
1065 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
1066
1067 /* Beacon frame (non-MCS) rate (as a bitmap) */
1068 u32 beacon_rateidx_mask[NUM_NL80211_BANDS];
1069 bool beacon_rate_set;
1070
1071 union {
1072 struct ieee80211_if_ap ap;
1073 struct ieee80211_if_vlan vlan;
1074 struct ieee80211_if_managed mgd;
1075 struct ieee80211_if_ibss ibss;
1076 struct ieee80211_if_mesh mesh;
1077 struct ieee80211_if_ocb ocb;
1078 struct ieee80211_if_mntr mntr;
1079 struct ieee80211_if_nan nan;
1080 } u;
1081
1082 struct ieee80211_link_data deflink;
1083 struct ieee80211_link_data __rcu *link[IEEE80211_MLD_MAX_NUM_LINKS];
1084
1085 /* for ieee80211_set_active_links_async() */
1086 struct work_struct activate_links_work;
1087 u16 desired_active_links;
1088
1089 #ifdef CONFIG_MAC80211_DEBUGFS
1090 struct {
1091 struct dentry *subdir_stations;
1092 struct dentry *default_unicast_key;
1093 struct dentry *default_multicast_key;
1094 struct dentry *default_mgmt_key;
1095 struct dentry *default_beacon_key;
1096 } debugfs;
1097 #endif
1098
1099 /* must be last, dynamically sized area in this! */
1100 struct ieee80211_vif vif;
1101 };
1102
1103 static inline
vif_to_sdata(struct ieee80211_vif * p)1104 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
1105 {
1106 return container_of(p, struct ieee80211_sub_if_data, vif);
1107 }
1108
sdata_lock(struct ieee80211_sub_if_data * sdata)1109 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
1110 __acquires(&sdata->wdev.mtx)
1111 {
1112 mutex_lock(&sdata->wdev.mtx);
1113 __acquire(&sdata->wdev.mtx);
1114 }
1115
sdata_unlock(struct ieee80211_sub_if_data * sdata)1116 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
1117 __releases(&sdata->wdev.mtx)
1118 {
1119 mutex_unlock(&sdata->wdev.mtx);
1120 __release(&sdata->wdev.mtx);
1121 }
1122
1123 #define sdata_dereference(p, sdata) \
1124 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
1125
1126 static inline void
sdata_assert_lock(struct ieee80211_sub_if_data * sdata)1127 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
1128 {
1129 lockdep_assert_held(&sdata->wdev.mtx);
1130 }
1131
1132 static inline int
ieee80211_chanwidth_get_shift(enum nl80211_chan_width width)1133 ieee80211_chanwidth_get_shift(enum nl80211_chan_width width)
1134 {
1135 switch (width) {
1136 case NL80211_CHAN_WIDTH_5:
1137 return 2;
1138 case NL80211_CHAN_WIDTH_10:
1139 return 1;
1140 default:
1141 return 0;
1142 }
1143 }
1144
1145 static inline int
ieee80211_chandef_get_shift(struct cfg80211_chan_def * chandef)1146 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1147 {
1148 return ieee80211_chanwidth_get_shift(chandef->width);
1149 }
1150
1151 static inline int
ieee80211_vif_get_shift(struct ieee80211_vif * vif)1152 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1153 {
1154 struct ieee80211_chanctx_conf *chanctx_conf;
1155 int shift = 0;
1156
1157 rcu_read_lock();
1158 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf);
1159 if (chanctx_conf)
1160 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1161 rcu_read_unlock();
1162
1163 return shift;
1164 }
1165
1166 static inline int
ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems * elems)1167 ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems)
1168 {
1169 int i, len = 0;
1170
1171 if (!elems)
1172 return 0;
1173
1174 for (i = 0; i < elems->cnt; i++)
1175 len += elems->elem[i].len;
1176
1177 return len;
1178 }
1179
1180 enum {
1181 IEEE80211_RX_MSG = 1,
1182 IEEE80211_TX_STATUS_MSG = 2,
1183 };
1184
1185 enum queue_stop_reason {
1186 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1187 IEEE80211_QUEUE_STOP_REASON_PS,
1188 IEEE80211_QUEUE_STOP_REASON_CSA,
1189 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1190 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1191 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1192 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1193 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1194 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1195 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1196 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE,
1197
1198 IEEE80211_QUEUE_STOP_REASONS,
1199 };
1200
1201 #ifdef CONFIG_MAC80211_LEDS
1202 struct tpt_led_trigger {
1203 char name[32];
1204 const struct ieee80211_tpt_blink *blink_table;
1205 unsigned int blink_table_len;
1206 struct timer_list timer;
1207 struct ieee80211_local *local;
1208 unsigned long prev_traffic;
1209 unsigned long tx_bytes, rx_bytes;
1210 unsigned int active, want;
1211 bool running;
1212 };
1213 #endif
1214
1215 /**
1216 * mac80211 scan flags - currently active scan mode
1217 *
1218 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1219 * well be on the operating channel
1220 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1221 * determine if we are on the operating channel or not
1222 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1223 * channel. This should not interrupt normal traffic.
1224 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1225 * that the scan completed.
1226 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1227 * a scan complete for an aborted scan.
1228 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1229 * cancelled.
1230 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR
1231 * and could send a probe request after receiving a beacon.
1232 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request
1233 */
1234 enum {
1235 SCAN_SW_SCANNING,
1236 SCAN_HW_SCANNING,
1237 SCAN_ONCHANNEL_SCANNING,
1238 SCAN_COMPLETED,
1239 SCAN_ABORTED,
1240 SCAN_HW_CANCELLED,
1241 SCAN_BEACON_WAIT,
1242 SCAN_BEACON_DONE,
1243 };
1244
1245 /**
1246 * enum mac80211_scan_state - scan state machine states
1247 *
1248 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1249 * determines if we should keep on scanning or switch back to the
1250 * operating channel
1251 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1252 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1253 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1254 * send out data
1255 * @SCAN_RESUME: Resume the scan and scan the next channel
1256 * @SCAN_ABORT: Abort the scan and go back to operating channel
1257 */
1258 enum mac80211_scan_state {
1259 SCAN_DECISION,
1260 SCAN_SET_CHANNEL,
1261 SCAN_SEND_PROBE,
1262 SCAN_SUSPEND,
1263 SCAN_RESUME,
1264 SCAN_ABORT,
1265 };
1266
1267 DECLARE_STATIC_KEY_FALSE(aql_disable);
1268
1269 struct ieee80211_local {
1270 /* embed the driver visible part.
1271 * don't cast (use the static inlines below), but we keep
1272 * it first anyway so they become a no-op */
1273 struct ieee80211_hw hw;
1274
1275 struct fq fq;
1276 struct codel_vars *cvars;
1277 struct codel_params cparams;
1278
1279 /* protects active_txqs and txqi->schedule_order */
1280 spinlock_t active_txq_lock[IEEE80211_NUM_ACS];
1281 struct list_head active_txqs[IEEE80211_NUM_ACS];
1282 u16 schedule_round[IEEE80211_NUM_ACS];
1283
1284 u16 airtime_flags;
1285 u32 aql_txq_limit_low[IEEE80211_NUM_ACS];
1286 u32 aql_txq_limit_high[IEEE80211_NUM_ACS];
1287 u32 aql_threshold;
1288 atomic_t aql_total_pending_airtime;
1289 atomic_t aql_ac_pending_airtime[IEEE80211_NUM_ACS];
1290
1291 const struct ieee80211_ops *ops;
1292
1293 /*
1294 * private workqueue to mac80211. mac80211 makes this accessible
1295 * via ieee80211_queue_work()
1296 */
1297 struct workqueue_struct *workqueue;
1298
1299 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1300 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1301 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1302 spinlock_t queue_stop_reason_lock;
1303
1304 int open_count;
1305 int monitors, cooked_mntrs;
1306 /* number of interfaces with corresponding FIF_ flags */
1307 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1308 fif_probe_req;
1309 bool probe_req_reg;
1310 bool rx_mcast_action_reg;
1311 unsigned int filter_flags; /* FIF_* */
1312
1313 bool wiphy_ciphers_allocated;
1314
1315 bool use_chanctx;
1316
1317 /* protects the aggregated multicast list and filter calls */
1318 spinlock_t filter_lock;
1319
1320 /* used for uploading changed mc list */
1321 struct work_struct reconfig_filter;
1322
1323 /* aggregated multicast list */
1324 struct netdev_hw_addr_list mc_list;
1325
1326 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1327
1328 /*
1329 * suspended is true if we finished all the suspend _and_ we have
1330 * not yet come up from resume. This is to be used by mac80211
1331 * to ensure driver sanity during suspend and mac80211's own
1332 * sanity. It can eventually be used for WoW as well.
1333 */
1334 bool suspended;
1335
1336 /* suspending is true during the whole suspend process */
1337 bool suspending;
1338
1339 /*
1340 * Resuming is true while suspended, but when we're reprogramming the
1341 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1342 * again even though some other parts of the stack are still suspended
1343 * and we still drop received frames to avoid waking the stack.
1344 */
1345 bool resuming;
1346
1347 /*
1348 * quiescing is true during the suspend process _only_ to
1349 * ease timer cancelling etc.
1350 */
1351 bool quiescing;
1352
1353 /* device is started */
1354 bool started;
1355
1356 /* device is during a HW reconfig */
1357 bool in_reconfig;
1358
1359 /* wowlan is enabled -- don't reconfig on resume */
1360 bool wowlan;
1361
1362 struct work_struct radar_detected_work;
1363
1364 /* number of RX chains the hardware has */
1365 u8 rx_chains;
1366
1367 /* bitmap of which sbands were copied */
1368 u8 sband_allocated;
1369
1370 int tx_headroom; /* required headroom for hardware/radiotap */
1371
1372 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1373 * added to skb_queue will be processed, but frames in
1374 * skb_queue_unreliable may be dropped if the total length of these
1375 * queues increases over the limit. */
1376 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1377 struct tasklet_struct tasklet;
1378 struct sk_buff_head skb_queue;
1379 struct sk_buff_head skb_queue_unreliable;
1380
1381 spinlock_t rx_path_lock;
1382
1383 /* Station data */
1384 /*
1385 * The mutex only protects the list, hash table and
1386 * counter, reads are done with RCU.
1387 */
1388 struct mutex sta_mtx;
1389 spinlock_t tim_lock;
1390 unsigned long num_sta;
1391 struct list_head sta_list;
1392 struct rhltable sta_hash;
1393 struct rhltable link_sta_hash;
1394 struct timer_list sta_cleanup;
1395 int sta_generation;
1396
1397 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1398 struct tasklet_struct tx_pending_tasklet;
1399 struct tasklet_struct wake_txqs_tasklet;
1400
1401 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1402
1403 /* number of interfaces with allmulti RX */
1404 atomic_t iff_allmultis;
1405
1406 struct rate_control_ref *rate_ctrl;
1407
1408 struct arc4_ctx wep_tx_ctx;
1409 struct arc4_ctx wep_rx_ctx;
1410 u32 wep_iv;
1411
1412 /* see iface.c */
1413 struct list_head interfaces;
1414 struct list_head mon_list; /* only that are IFF_UP && !cooked */
1415 struct mutex iflist_mtx;
1416
1417 /*
1418 * Key mutex, protects sdata's key_list and sta_info's
1419 * key pointers and ptk_idx (write access, they're RCU.)
1420 */
1421 struct mutex key_mtx;
1422
1423 /* mutex for scan and work locking */
1424 struct mutex mtx;
1425
1426 /* Scanning and BSS list */
1427 unsigned long scanning;
1428 struct cfg80211_ssid scan_ssid;
1429 struct cfg80211_scan_request *int_scan_req;
1430 struct cfg80211_scan_request __rcu *scan_req;
1431 struct ieee80211_scan_request *hw_scan_req;
1432 struct cfg80211_chan_def scan_chandef;
1433 enum nl80211_band hw_scan_band;
1434 int scan_channel_idx;
1435 int scan_ies_len;
1436 int hw_scan_ies_bufsize;
1437 struct cfg80211_scan_info scan_info;
1438
1439 struct work_struct sched_scan_stopped_work;
1440 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1441 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1442 u8 scan_addr[ETH_ALEN];
1443
1444 unsigned long leave_oper_channel_time;
1445 enum mac80211_scan_state next_scan_state;
1446 struct delayed_work scan_work;
1447 struct ieee80211_sub_if_data __rcu *scan_sdata;
1448 /* For backward compatibility only -- do not use */
1449 struct cfg80211_chan_def _oper_chandef;
1450
1451 /* Temporary remain-on-channel for off-channel operations */
1452 struct ieee80211_channel *tmp_channel;
1453
1454 /* channel contexts */
1455 struct list_head chanctx_list;
1456 struct mutex chanctx_mtx;
1457
1458 #ifdef CONFIG_MAC80211_LEDS
1459 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1460 struct led_trigger tpt_led;
1461 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1462 atomic_t radio_led_active, tpt_led_active;
1463 struct tpt_led_trigger *tpt_led_trigger;
1464 #endif
1465
1466 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1467 /* SNMP counters */
1468 /* dot11CountersTable */
1469 u32 dot11TransmittedFragmentCount;
1470 u32 dot11MulticastTransmittedFrameCount;
1471 u32 dot11FailedCount;
1472 u32 dot11RetryCount;
1473 u32 dot11MultipleRetryCount;
1474 u32 dot11FrameDuplicateCount;
1475 u32 dot11ReceivedFragmentCount;
1476 u32 dot11MulticastReceivedFrameCount;
1477 u32 dot11TransmittedFrameCount;
1478
1479 /* TX/RX handler statistics */
1480 unsigned int tx_handlers_drop;
1481 unsigned int tx_handlers_queued;
1482 unsigned int tx_handlers_drop_wep;
1483 unsigned int tx_handlers_drop_not_assoc;
1484 unsigned int tx_handlers_drop_unauth_port;
1485 unsigned int rx_handlers_drop;
1486 unsigned int rx_handlers_queued;
1487 unsigned int rx_handlers_drop_nullfunc;
1488 unsigned int rx_handlers_drop_defrag;
1489 unsigned int tx_expand_skb_head;
1490 unsigned int tx_expand_skb_head_cloned;
1491 unsigned int rx_expand_skb_head_defrag;
1492 unsigned int rx_handlers_fragments;
1493 unsigned int tx_status_drop;
1494 #define I802_DEBUG_INC(c) (c)++
1495 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1496 #define I802_DEBUG_INC(c) do { } while (0)
1497 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1498
1499
1500 int total_ps_buffered; /* total number of all buffered unicast and
1501 * multicast packets for power saving stations
1502 */
1503
1504 bool pspolling;
1505 /*
1506 * PS can only be enabled when we have exactly one managed
1507 * interface (and monitors) in PS, this then points there.
1508 */
1509 struct ieee80211_sub_if_data *ps_sdata;
1510 struct work_struct dynamic_ps_enable_work;
1511 struct work_struct dynamic_ps_disable_work;
1512 struct timer_list dynamic_ps_timer;
1513 struct notifier_block ifa_notifier;
1514 struct notifier_block ifa6_notifier;
1515
1516 /*
1517 * The dynamic ps timeout configured from user space via WEXT -
1518 * this will override whatever chosen by mac80211 internally.
1519 */
1520 int dynamic_ps_forced_timeout;
1521
1522 int user_power_level; /* in dBm, for all interfaces */
1523
1524 enum ieee80211_smps_mode smps_mode;
1525
1526 struct work_struct restart_work;
1527
1528 #ifdef CONFIG_MAC80211_DEBUGFS
1529 struct local_debugfsdentries {
1530 struct dentry *rcdir;
1531 struct dentry *keys;
1532 } debugfs;
1533 bool force_tx_status;
1534 #endif
1535
1536 /*
1537 * Remain-on-channel support
1538 */
1539 struct delayed_work roc_work;
1540 struct list_head roc_list;
1541 struct work_struct hw_roc_start, hw_roc_done;
1542 unsigned long hw_roc_start_time;
1543 u64 roc_cookie_counter;
1544
1545 struct idr ack_status_frames;
1546 spinlock_t ack_status_lock;
1547
1548 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1549
1550 /* virtual monitor interface */
1551 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1552 struct cfg80211_chan_def monitor_chandef;
1553
1554 /* extended capabilities provided by mac80211 */
1555 u8 ext_capa[8];
1556 };
1557
1558 static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(const struct net_device * dev)1559 IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev)
1560 {
1561 return netdev_priv(dev);
1562 }
1563
1564 static inline struct ieee80211_sub_if_data *
IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev * wdev)1565 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1566 {
1567 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1568 }
1569
1570 static inline struct ieee80211_supported_band *
ieee80211_get_sband(struct ieee80211_sub_if_data * sdata)1571 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1572 {
1573 struct ieee80211_local *local = sdata->local;
1574 struct ieee80211_chanctx_conf *chanctx_conf;
1575 enum nl80211_band band;
1576
1577 WARN_ON(sdata->vif.valid_links);
1578
1579 rcu_read_lock();
1580 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
1581
1582 if (!chanctx_conf) {
1583 rcu_read_unlock();
1584 return NULL;
1585 }
1586
1587 band = chanctx_conf->def.chan->band;
1588 rcu_read_unlock();
1589
1590 return local->hw.wiphy->bands[band];
1591 }
1592
1593 static inline struct ieee80211_supported_band *
ieee80211_get_link_sband(struct ieee80211_link_data * link)1594 ieee80211_get_link_sband(struct ieee80211_link_data *link)
1595 {
1596 struct ieee80211_local *local = link->sdata->local;
1597 struct ieee80211_chanctx_conf *chanctx_conf;
1598 enum nl80211_band band;
1599
1600 rcu_read_lock();
1601 chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
1602 if (!chanctx_conf) {
1603 rcu_read_unlock();
1604 return NULL;
1605 }
1606
1607 band = chanctx_conf->def.chan->band;
1608 rcu_read_unlock();
1609
1610 return local->hw.wiphy->bands[band];
1611 }
1612
1613 /* this struct holds the value parsing from channel switch IE */
1614 struct ieee80211_csa_ie {
1615 struct cfg80211_chan_def chandef;
1616 u8 mode;
1617 u8 count;
1618 u8 ttl;
1619 u16 pre_value;
1620 u16 reason_code;
1621 u32 max_switch_time;
1622 };
1623
1624 /* Parsed Information Elements */
1625 struct ieee802_11_elems {
1626 const u8 *ie_start;
1627 size_t total_len;
1628 u32 crc;
1629
1630 /* pointers to IEs */
1631 const struct ieee80211_tdls_lnkie *lnk_id;
1632 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1633 const u8 *ext_capab;
1634 const u8 *ssid;
1635 const u8 *supp_rates;
1636 const u8 *ds_params;
1637 const struct ieee80211_tim_ie *tim;
1638 const u8 *rsn;
1639 const u8 *rsnx;
1640 const u8 *erp_info;
1641 const u8 *ext_supp_rates;
1642 const u8 *wmm_info;
1643 const u8 *wmm_param;
1644 const struct ieee80211_ht_cap *ht_cap_elem;
1645 const struct ieee80211_ht_operation *ht_operation;
1646 const struct ieee80211_vht_cap *vht_cap_elem;
1647 const struct ieee80211_vht_operation *vht_operation;
1648 const struct ieee80211_meshconf_ie *mesh_config;
1649 const u8 *he_cap;
1650 const struct ieee80211_he_operation *he_operation;
1651 const struct ieee80211_he_spr *he_spr;
1652 const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1653 const struct ieee80211_he_6ghz_capa *he_6ghz_capa;
1654 const struct ieee80211_tx_pwr_env *tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT];
1655 const u8 *uora_element;
1656 const u8 *mesh_id;
1657 const u8 *peering;
1658 const __le16 *awake_window;
1659 const u8 *preq;
1660 const u8 *prep;
1661 const u8 *perr;
1662 const struct ieee80211_rann_ie *rann;
1663 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1664 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1665 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1666 const u8 *max_channel_switch_time;
1667 const u8 *country_elem;
1668 const u8 *pwr_constr_elem;
1669 const u8 *cisco_dtpc_elem;
1670 const struct ieee80211_timeout_interval_ie *timeout_int;
1671 const u8 *opmode_notif;
1672 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1673 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1674 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1675 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
1676 const struct ieee80211_bssid_index *bssid_index;
1677 u8 max_bssid_indicator;
1678 u8 dtim_count;
1679 u8 dtim_period;
1680 const struct ieee80211_addba_ext_ie *addba_ext_ie;
1681 const struct ieee80211_s1g_cap *s1g_capab;
1682 const struct ieee80211_s1g_oper_ie *s1g_oper;
1683 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat;
1684 const struct ieee80211_aid_response_ie *aid_resp;
1685 const struct ieee80211_eht_cap_elem *eht_cap;
1686 const struct ieee80211_eht_operation *eht_operation;
1687 const struct ieee80211_multi_link_elem *multi_link;
1688
1689 /* length of them, respectively */
1690 u8 ext_capab_len;
1691 u8 ssid_len;
1692 u8 supp_rates_len;
1693 u8 tim_len;
1694 u8 rsn_len;
1695 u8 rsnx_len;
1696 u8 ext_supp_rates_len;
1697 u8 wmm_info_len;
1698 u8 wmm_param_len;
1699 u8 he_cap_len;
1700 u8 mesh_id_len;
1701 u8 peering_len;
1702 u8 preq_len;
1703 u8 prep_len;
1704 u8 perr_len;
1705 u8 country_elem_len;
1706 u8 bssid_index_len;
1707 u8 tx_pwr_env_len[IEEE80211_TPE_MAX_IE_COUNT];
1708 u8 tx_pwr_env_num;
1709 u8 eht_cap_len;
1710
1711 /* whether a parse error occurred while retrieving these elements */
1712 bool parse_error;
1713
1714 /*
1715 * scratch buffer that can be used for various element parsing related
1716 * tasks, e.g., element de-fragmentation etc.
1717 */
1718 size_t scratch_len;
1719 u8 *scratch_pos;
1720 u8 scratch[];
1721 };
1722
hw_to_local(struct ieee80211_hw * hw)1723 static inline struct ieee80211_local *hw_to_local(
1724 struct ieee80211_hw *hw)
1725 {
1726 return container_of(hw, struct ieee80211_local, hw);
1727 }
1728
to_txq_info(struct ieee80211_txq * txq)1729 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1730 {
1731 return container_of(txq, struct txq_info, txq);
1732 }
1733
txq_has_queue(struct ieee80211_txq * txq)1734 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1735 {
1736 struct txq_info *txqi = to_txq_info(txq);
1737
1738 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1739 }
1740
1741 static inline bool
ieee80211_have_rx_timestamp(struct ieee80211_rx_status * status)1742 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1743 {
1744 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1745 status->flag & RX_FLAG_MACTIME_END);
1746 return !!(status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END |
1747 RX_FLAG_MACTIME_PLCP_START));
1748 }
1749
1750 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1751 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1752
1753 /* This function returns the number of multicast stations connected to this
1754 * interface. It returns -1 if that number is not tracked, that is for netdevs
1755 * not in AP or AP_VLAN mode or when using 4addr.
1756 */
1757 static inline int
ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data * sdata)1758 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1759 {
1760 if (sdata->vif.type == NL80211_IFTYPE_AP)
1761 return atomic_read(&sdata->u.ap.num_mcast_sta);
1762 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1763 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1764 return -1;
1765 }
1766
1767 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1768 struct ieee80211_rx_status *status,
1769 unsigned int mpdu_len,
1770 unsigned int mpdu_offset);
1771 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1772 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1773 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1774 u64 changed);
1775 void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata,
1776 u64 changed);
1777 void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata,
1778 struct ieee80211_link_data *link,
1779 u64 changed);
1780 void ieee80211_configure_filter(struct ieee80211_local *local);
1781 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1782
1783 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1784 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1785 u64 *cookie, gfp_t gfp);
1786
1787 void ieee80211_check_fast_rx(struct sta_info *sta);
1788 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1789 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1790 void ieee80211_clear_fast_rx(struct sta_info *sta);
1791
1792 bool ieee80211_is_our_addr(struct ieee80211_sub_if_data *sdata,
1793 const u8 *addr, int *out_link_id);
1794
1795 /* STA code */
1796 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1797 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1798 struct cfg80211_auth_request *req);
1799 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1800 struct cfg80211_assoc_request *req);
1801 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1802 struct cfg80211_deauth_request *req);
1803 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1804 struct cfg80211_disassoc_request *req);
1805 void ieee80211_send_pspoll(struct ieee80211_local *local,
1806 struct ieee80211_sub_if_data *sdata);
1807 void ieee80211_recalc_ps(struct ieee80211_local *local);
1808 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1809 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1810 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1811 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1812 struct sk_buff *skb);
1813 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
1814 struct sk_buff *skb);
1815 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1816 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1817 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1818 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1819 __le16 fc, bool acked);
1820 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1821 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1822 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1823 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
1824 u8 reason, bool tx);
1825 void ieee80211_mgd_setup_link(struct ieee80211_link_data *link);
1826 void ieee80211_mgd_stop_link(struct ieee80211_link_data *link);
1827 void ieee80211_mgd_set_link_qos_params(struct ieee80211_link_data *link);
1828
1829 /* IBSS code */
1830 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1831 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1832 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1833 const u8 *bssid, const u8 *addr, u32 supp_rates);
1834 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1835 struct cfg80211_ibss_params *params);
1836 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1837 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1838 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1839 struct sk_buff *skb);
1840 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1841 struct cfg80211_csa_settings *csa_settings);
1842 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1843 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1844
1845 /* OCB code */
1846 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1847 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1848 const u8 *bssid, const u8 *addr, u32 supp_rates);
1849 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1850 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1851 struct ocb_setup *setup);
1852 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1853
1854 /* mesh code */
1855 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1856 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1857 struct sk_buff *skb);
1858 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1859 struct cfg80211_csa_settings *csa_settings);
1860 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1861
1862 /* scan/BSS handling */
1863 void ieee80211_scan_work(struct work_struct *work);
1864 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1865 const u8 *ssid, u8 ssid_len,
1866 struct ieee80211_channel **channels,
1867 unsigned int n_channels,
1868 enum nl80211_bss_scan_width scan_width);
1869 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1870 struct cfg80211_scan_request *req);
1871 void ieee80211_scan_cancel(struct ieee80211_local *local);
1872 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1873 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1874
1875 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1876 struct ieee80211_bss *
1877 ieee80211_bss_info_update(struct ieee80211_local *local,
1878 struct ieee80211_rx_status *rx_status,
1879 struct ieee80211_mgmt *mgmt,
1880 size_t len,
1881 struct ieee80211_channel *channel);
1882 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1883 struct ieee80211_bss *bss);
1884
1885 /* scheduled scan handling */
1886 int
1887 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1888 struct cfg80211_sched_scan_request *req);
1889 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1890 struct cfg80211_sched_scan_request *req);
1891 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1892 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1893 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1894
1895 /* off-channel/mgmt-tx */
1896 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1897 void ieee80211_offchannel_return(struct ieee80211_local *local);
1898 void ieee80211_roc_setup(struct ieee80211_local *local);
1899 void ieee80211_start_next_roc(struct ieee80211_local *local);
1900 void ieee80211_roc_purge(struct ieee80211_local *local,
1901 struct ieee80211_sub_if_data *sdata);
1902 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1903 struct ieee80211_channel *chan,
1904 unsigned int duration, u64 *cookie);
1905 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1906 struct wireless_dev *wdev, u64 cookie);
1907 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1908 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1909 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1910 struct wireless_dev *wdev, u64 cookie);
1911
1912 /* channel switch handling */
1913 void ieee80211_csa_finalize_work(struct work_struct *work);
1914 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1915 struct cfg80211_csa_settings *params);
1916
1917 /* color change handling */
1918 void ieee80211_color_change_finalize_work(struct work_struct *work);
1919
1920 /* interface handling */
1921 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
1922 NETIF_F_HW_CSUM | NETIF_F_SG | \
1923 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE)
1924 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM)
1925 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \
1926 MAC80211_SUPPORTED_FEATURES_RX)
1927
1928 int ieee80211_iface_init(void);
1929 void ieee80211_iface_exit(void);
1930 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1931 unsigned char name_assign_type,
1932 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1933 struct vif_params *params);
1934 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1935 enum nl80211_iftype type);
1936 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1937 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1938 u32 ieee80211_idle_off(struct ieee80211_local *local);
1939 void ieee80211_recalc_idle(struct ieee80211_local *local);
1940 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1941 const int offset);
1942 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1943 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1944 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1945 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1946
1947 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1948 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1949 bool update_bss);
1950 void ieee80211_recalc_offload(struct ieee80211_local *local);
1951
ieee80211_sdata_running(struct ieee80211_sub_if_data * sdata)1952 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1953 {
1954 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1955 }
1956
1957 /* link handling */
1958 void ieee80211_link_setup(struct ieee80211_link_data *link);
1959 void ieee80211_link_init(struct ieee80211_sub_if_data *sdata,
1960 int link_id,
1961 struct ieee80211_link_data *link,
1962 struct ieee80211_bss_conf *link_conf);
1963 void ieee80211_link_stop(struct ieee80211_link_data *link);
1964 int ieee80211_vif_set_links(struct ieee80211_sub_if_data *sdata,
1965 u16 new_links);
1966 void ieee80211_vif_clear_links(struct ieee80211_sub_if_data *sdata);
1967
1968 /* tx handling */
1969 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1970 void ieee80211_tx_pending(struct tasklet_struct *t);
1971 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1972 struct net_device *dev);
1973 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1974 struct net_device *dev);
1975 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb,
1976 struct net_device *dev);
1977 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1978 struct net_device *dev,
1979 u32 info_flags,
1980 u32 ctrl_flags,
1981 u64 *cookie);
1982 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1983 struct sk_buff_head *skbs);
1984 struct sk_buff *
1985 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1986 struct sk_buff *skb, u32 info_flags);
1987 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1988 int retry_count, int shift, bool send_to_cooked,
1989 struct ieee80211_tx_status *status);
1990
1991 void ieee80211_check_fast_xmit(struct sta_info *sta);
1992 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1993 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1994 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1995 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
1996 const u8 *buf, size_t len,
1997 const u8 *dest, __be16 proto, bool unencrypted,
1998 int link_id, u64 *cookie);
1999 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
2000 const u8 *buf, size_t len);
2001
2002 /* HT */
2003 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
2004 struct ieee80211_sta_ht_cap *ht_cap);
2005 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
2006 struct ieee80211_supported_band *sband,
2007 const struct ieee80211_ht_cap *ht_cap_ie,
2008 struct link_sta_info *link_sta);
2009 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
2010 const u8 *da, u16 tid,
2011 u16 initiator, u16 reason_code);
2012 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
2013 enum ieee80211_smps_mode smps, const u8 *da,
2014 const u8 *bssid);
2015 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
2016 enum ieee80211_smps_mode smps_mode_new);
2017
2018 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
2019 u16 initiator, u16 reason, bool stop);
2020 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
2021 u16 initiator, u16 reason, bool stop);
2022 void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
2023 u8 dialog_token, u16 timeout,
2024 u16 start_seq_num, u16 ba_policy, u16 tid,
2025 u16 buf_size, bool tx, bool auto_seq,
2026 const struct ieee80211_addba_ext_ie *addbaext);
2027 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
2028 enum ieee80211_agg_stop_reason reason);
2029 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
2030 struct sta_info *sta,
2031 struct ieee80211_mgmt *mgmt, size_t len);
2032 void ieee80211_process_addba_resp(struct ieee80211_local *local,
2033 struct sta_info *sta,
2034 struct ieee80211_mgmt *mgmt,
2035 size_t len);
2036 void ieee80211_process_addba_request(struct ieee80211_local *local,
2037 struct sta_info *sta,
2038 struct ieee80211_mgmt *mgmt,
2039 size_t len);
2040
2041 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2042 enum ieee80211_agg_stop_reason reason);
2043 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2044 enum ieee80211_agg_stop_reason reason);
2045 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
2046 struct tid_ampdu_tx *tid_tx);
2047 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
2048 struct tid_ampdu_tx *tid_tx);
2049 void ieee80211_ba_session_work(struct work_struct *work);
2050 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
2051 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
2052
2053 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
2054 enum nl80211_smps_mode
2055 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
2056
2057 /* VHT */
2058 void
2059 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
2060 struct ieee80211_supported_band *sband,
2061 const struct ieee80211_vht_cap *vht_cap_ie,
2062 struct link_sta_info *link_sta);
2063 enum ieee80211_sta_rx_bandwidth
2064 ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta);
2065 enum ieee80211_sta_rx_bandwidth
2066 ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta);
2067 void ieee80211_sta_set_rx_nss(struct link_sta_info *link_sta);
2068 enum ieee80211_sta_rx_bandwidth
2069 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
2070 enum nl80211_chan_width
2071 ieee80211_sta_cap_chan_bw(struct link_sta_info *link_sta);
2072 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
2073 struct ieee80211_link_data *link,
2074 struct ieee80211_mgmt *mgmt);
2075 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2076 struct link_sta_info *sta,
2077 u8 opmode, enum nl80211_band band);
2078 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2079 struct link_sta_info *sta,
2080 u8 opmode, enum nl80211_band band);
2081 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
2082 struct ieee80211_sta_vht_cap *vht_cap);
2083 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
2084 u16 vht_mask[NL80211_VHT_NSS_MAX]);
2085 enum nl80211_chan_width
2086 ieee80211_sta_rx_bw_to_chan_width(struct link_sta_info *sta);
2087
2088 /* HE */
2089 void
2090 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
2091 struct ieee80211_supported_band *sband,
2092 const u8 *he_cap_ie, u8 he_cap_len,
2093 const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
2094 struct link_sta_info *link_sta);
2095 void
2096 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
2097 const struct ieee80211_he_spr *he_spr_ie_elem);
2098
2099 void
2100 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
2101 const struct ieee80211_he_operation *he_op_ie_elem);
2102
2103 /* S1G */
2104 void ieee80211_s1g_sta_rate_init(struct sta_info *sta);
2105 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb);
2106 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata,
2107 struct sk_buff *skb);
2108 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata,
2109 struct sk_buff *skb);
2110
2111 /* Spectrum management */
2112 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
2113 struct ieee80211_mgmt *mgmt,
2114 size_t len);
2115 /**
2116 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
2117 * @sdata: the sdata of the interface which has received the frame
2118 * @elems: parsed 802.11 elements received with the frame
2119 * @current_band: indicates the current band
2120 * @vht_cap_info: VHT capabilities of the transmitter
2121 * @conn_flags: contains information about own capabilities and restrictions
2122 * to decide which channel switch announcements can be accepted, using
2123 * flags from &enum ieee80211_conn_flags.
2124 * @bssid: the currently connected bssid (for reporting)
2125 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
2126 All of them will be filled with if success only.
2127 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
2128 */
2129 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
2130 struct ieee802_11_elems *elems,
2131 enum nl80211_band current_band,
2132 u32 vht_cap_info,
2133 ieee80211_conn_flags_t conn_flags, u8 *bssid,
2134 struct ieee80211_csa_ie *csa_ie);
2135
2136 /* Suspend/resume and hw reconfiguration */
2137 int ieee80211_reconfig(struct ieee80211_local *local);
2138 void ieee80211_stop_device(struct ieee80211_local *local);
2139
2140 int __ieee80211_suspend(struct ieee80211_hw *hw,
2141 struct cfg80211_wowlan *wowlan);
2142
__ieee80211_resume(struct ieee80211_hw * hw)2143 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
2144 {
2145 struct ieee80211_local *local = hw_to_local(hw);
2146
2147 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
2148 !test_bit(SCAN_COMPLETED, &local->scanning),
2149 "%s: resume with hardware scan still in progress\n",
2150 wiphy_name(hw->wiphy));
2151
2152 return ieee80211_reconfig(hw_to_local(hw));
2153 }
2154
2155 /* utility functions/constants */
2156 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
2157 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
2158 int rate, int erp, int short_preamble,
2159 int shift);
2160 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
2161 struct ieee80211_tx_queue_params *qparam,
2162 int ac);
2163 void ieee80211_set_wmm_default(struct ieee80211_link_data *link,
2164 bool bss_notify, bool enable_qos);
2165 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
2166 struct sta_info *sta, struct sk_buff *skb);
2167
2168 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2169 struct sk_buff *skb, int tid, int link_id,
2170 enum nl80211_band band);
2171
2172 /* sta_out needs to be checked for ERR_PTR() before using */
2173 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata,
2174 struct sk_buff *skb,
2175 struct sta_info **sta_out);
2176
2177 static inline void
ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid,enum nl80211_band band)2178 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2179 struct sk_buff *skb, int tid,
2180 enum nl80211_band band)
2181 {
2182 rcu_read_lock();
2183 __ieee80211_tx_skb_tid_band(sdata, skb, tid, -1, band);
2184 rcu_read_unlock();
2185 }
2186
2187 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
2188 struct sk_buff *skb, int tid, int link_id);
2189
ieee80211_tx_skb(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb)2190 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
2191 struct sk_buff *skb)
2192 {
2193 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
2194 ieee80211_tx_skb_tid(sdata, skb, 7, -1);
2195 }
2196
2197 /**
2198 * struct ieee80211_elems_parse_params - element parsing parameters
2199 * @start: pointer to the elements
2200 * @len: length of the elements
2201 * @action: %true if the elements came from an action frame
2202 * @filter: bitmap of element IDs to filter out while calculating
2203 * the element CRC
2204 * @crc: CRC starting value
2205 * @bss: the BSS to parse this as, for multi-BSSID cases this can
2206 * represent a non-transmitting BSS in which case the data
2207 * for that non-transmitting BSS is returned
2208 * @link_id: the link ID to parse elements for, if a STA profile
2209 * is present in the multi-link element, or -1 to ignore
2210 * @from_ap: frame is received from an AP (currently used only
2211 * for EHT capabilities parsing)
2212 */
2213 struct ieee80211_elems_parse_params {
2214 const u8 *start;
2215 size_t len;
2216 bool action;
2217 u64 filter;
2218 u32 crc;
2219 struct cfg80211_bss *bss;
2220 int link_id;
2221 bool from_ap;
2222 };
2223
2224 struct ieee802_11_elems *
2225 ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params);
2226
2227 static inline struct ieee802_11_elems *
ieee802_11_parse_elems_crc(const u8 * start,size_t len,bool action,u64 filter,u32 crc,struct cfg80211_bss * bss)2228 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
2229 u64 filter, u32 crc,
2230 struct cfg80211_bss *bss)
2231 {
2232 struct ieee80211_elems_parse_params params = {
2233 .start = start,
2234 .len = len,
2235 .action = action,
2236 .filter = filter,
2237 .crc = crc,
2238 .bss = bss,
2239 .link_id = -1,
2240 };
2241
2242 return ieee802_11_parse_elems_full(¶ms);
2243 }
2244
2245 static inline struct ieee802_11_elems *
ieee802_11_parse_elems(const u8 * start,size_t len,bool action,struct cfg80211_bss * bss)2246 ieee802_11_parse_elems(const u8 *start, size_t len, bool action,
2247 struct cfg80211_bss *bss)
2248 {
2249 return ieee802_11_parse_elems_crc(start, len, action, 0, 0, bss);
2250 }
2251
2252 void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos);
2253
2254 extern const int ieee802_1d_to_ac[8];
2255
ieee80211_ac_from_tid(int tid)2256 static inline int ieee80211_ac_from_tid(int tid)
2257 {
2258 return ieee802_1d_to_ac[tid & 7];
2259 }
2260
2261 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
2262 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
2263 void ieee80211_dynamic_ps_timer(struct timer_list *t);
2264 void ieee80211_send_nullfunc(struct ieee80211_local *local,
2265 struct ieee80211_sub_if_data *sdata,
2266 bool powersave);
2267 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
2268 struct ieee80211_sub_if_data *sdata);
2269 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2270 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
2271
2272 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
2273 unsigned long queues,
2274 enum queue_stop_reason reason,
2275 bool refcounted);
2276 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
2277 struct ieee80211_sub_if_data *sdata,
2278 enum queue_stop_reason reason);
2279 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
2280 struct ieee80211_sub_if_data *sdata,
2281 enum queue_stop_reason reason);
2282 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
2283 unsigned long queues,
2284 enum queue_stop_reason reason,
2285 bool refcounted);
2286 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
2287 enum queue_stop_reason reason,
2288 bool refcounted);
2289 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
2290 enum queue_stop_reason reason,
2291 bool refcounted);
2292 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
2293 void ieee80211_add_pending_skb(struct ieee80211_local *local,
2294 struct sk_buff *skb);
2295 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
2296 struct sk_buff_head *skbs);
2297 void ieee80211_flush_queues(struct ieee80211_local *local,
2298 struct ieee80211_sub_if_data *sdata, bool drop);
2299 void __ieee80211_flush_queues(struct ieee80211_local *local,
2300 struct ieee80211_sub_if_data *sdata,
2301 unsigned int queues, bool drop);
2302
ieee80211_can_run_worker(struct ieee80211_local * local)2303 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2304 {
2305 /*
2306 * It's unsafe to try to do any work during reconfigure flow.
2307 * When the flow ends the work will be requeued.
2308 */
2309 if (local->in_reconfig)
2310 return false;
2311
2312 /*
2313 * If quiescing is set, we are racing with __ieee80211_suspend.
2314 * __ieee80211_suspend flushes the workers after setting quiescing,
2315 * and we check quiescing / suspended before enqueing new workers.
2316 * We should abort the worker to avoid the races below.
2317 */
2318 if (local->quiescing)
2319 return false;
2320
2321 /*
2322 * We might already be suspended if the following scenario occurs:
2323 * __ieee80211_suspend Control path
2324 *
2325 * if (local->quiescing)
2326 * return;
2327 * local->quiescing = true;
2328 * flush_workqueue();
2329 * queue_work(...);
2330 * local->suspended = true;
2331 * local->quiescing = false;
2332 * worker starts running...
2333 */
2334 if (local->suspended)
2335 return false;
2336
2337 return true;
2338 }
2339
2340 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2341 void ieee80211_txq_set_params(struct ieee80211_local *local);
2342 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2343 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2344 struct sta_info *sta,
2345 struct txq_info *txq, int tid);
2346 void ieee80211_txq_purge(struct ieee80211_local *local,
2347 struct txq_info *txqi);
2348 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2349 struct ieee80211_sub_if_data *sdata);
2350 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2351 struct txq_info *txqi);
2352 void ieee80211_wake_txqs(struct tasklet_struct *t);
2353 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2354 u16 transaction, u16 auth_alg, u16 status,
2355 const u8 *extra, size_t extra_len, const u8 *bssid,
2356 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2357 u32 tx_flags);
2358 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2359 const u8 *da, const u8 *bssid,
2360 u16 stype, u16 reason,
2361 bool send_frame, u8 *frame_buf);
2362
2363 enum {
2364 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
2365 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
2366 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
2367 };
2368
2369 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2370 size_t buffer_len,
2371 struct ieee80211_scan_ies *ie_desc,
2372 const u8 *ie, size_t ie_len,
2373 u8 bands_used, u32 *rate_masks,
2374 struct cfg80211_chan_def *chandef,
2375 u32 flags);
2376 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2377 const u8 *src, const u8 *dst,
2378 u32 ratemask,
2379 struct ieee80211_channel *chan,
2380 const u8 *ssid, size_t ssid_len,
2381 const u8 *ie, size_t ie_len,
2382 u32 flags);
2383 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2384 struct ieee802_11_elems *elems,
2385 enum nl80211_band band, u32 *basic_rates);
2386 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2387 struct ieee80211_link_data *link,
2388 enum ieee80211_smps_mode smps_mode);
2389 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata,
2390 struct ieee80211_link_data *link);
2391 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata,
2392 int link_id);
2393
2394 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2395 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2396 u16 cap);
2397 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2398 const struct cfg80211_chan_def *chandef,
2399 u16 prot_mode, bool rifs_mode);
2400 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2401 const struct cfg80211_chan_def *chandef);
2402 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2403 u32 cap);
2404 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2405 const struct cfg80211_chan_def *chandef);
2406 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2407 u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos,
2408 const struct ieee80211_sta_he_cap *he_cap,
2409 u8 *end);
2410 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2411 enum ieee80211_smps_mode smps_mode,
2412 struct sk_buff *skb);
2413 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef);
2414 int ieee80211_parse_bitrates(enum nl80211_chan_width width,
2415 const struct ieee80211_supported_band *sband,
2416 const u8 *srates, int srates_len, u32 *rates);
2417 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2418 struct sk_buff *skb, bool need_basic,
2419 enum nl80211_band band);
2420 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2421 struct sk_buff *skb, bool need_basic,
2422 enum nl80211_band band);
2423 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2424 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
2425 struct ieee80211_sta_s1g_cap *caps,
2426 struct sk_buff *skb);
2427 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
2428 struct sk_buff *skb);
2429
2430 /* channel management */
2431 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2432 struct cfg80211_chan_def *chandef);
2433 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
2434 const struct ieee80211_vht_operation *oper,
2435 const struct ieee80211_ht_operation *htop,
2436 struct cfg80211_chan_def *chandef);
2437 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation *eht_oper,
2438 bool support_160, bool support_320,
2439 struct cfg80211_chan_def *chandef);
2440 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
2441 const struct ieee80211_he_operation *he_oper,
2442 const struct ieee80211_eht_operation *eht_oper,
2443 struct cfg80211_chan_def *chandef);
2444 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
2445 struct cfg80211_chan_def *chandef);
2446 ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2447
2448 int __must_check
2449 ieee80211_link_use_channel(struct ieee80211_link_data *link,
2450 const struct cfg80211_chan_def *chandef,
2451 enum ieee80211_chanctx_mode mode);
2452 int __must_check
2453 ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link,
2454 const struct cfg80211_chan_def *chandef,
2455 enum ieee80211_chanctx_mode mode,
2456 bool radar_required);
2457 int __must_check
2458 ieee80211_link_use_reserved_context(struct ieee80211_link_data *link);
2459 int ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link);
2460
2461 int __must_check
2462 ieee80211_link_change_bandwidth(struct ieee80211_link_data *link,
2463 const struct cfg80211_chan_def *chandef,
2464 u32 *changed);
2465 void ieee80211_link_release_channel(struct ieee80211_link_data *link);
2466 void ieee80211_link_vlan_copy_chanctx(struct ieee80211_link_data *link);
2467 void ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link,
2468 bool clear);
2469 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2470 struct ieee80211_chanctx *ctx);
2471
2472 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2473 struct ieee80211_chanctx *chanctx);
2474 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2475 struct ieee80211_chanctx *ctx);
2476 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2477
2478 void ieee80211_dfs_cac_timer(unsigned long data);
2479 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2480 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2481 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2482 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2483 struct cfg80211_csa_settings *csa_settings);
2484
2485 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2486 struct ieee80211_sub_if_data *sdata);
2487 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2488 const struct cfg80211_chan_def *chandef,
2489 enum ieee80211_chanctx_mode chanmode,
2490 u8 radar_detect);
2491 int ieee80211_max_num_channels(struct ieee80211_local *local);
2492 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2493 struct ieee80211_chanctx *ctx);
2494
2495 /* TDLS */
2496 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2497 const u8 *peer, u8 action_code, u8 dialog_token,
2498 u16 status_code, u32 peer_capability,
2499 bool initiator, const u8 *extra_ies,
2500 size_t extra_ies_len);
2501 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2502 const u8 *peer, enum nl80211_tdls_operation oper);
2503 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2504 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2505 const u8 *addr, u8 oper_class,
2506 struct cfg80211_chan_def *chandef);
2507 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2508 struct net_device *dev,
2509 const u8 *addr);
2510 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2511 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2512 const u8 *peer, u16 reason);
2513 void
2514 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata,
2515 struct sk_buff *skb);
2516
2517
2518 const char *ieee80211_get_reason_code_string(u16 reason_code);
2519 u16 ieee80211_encode_usf(int val);
2520 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
2521 enum nl80211_iftype type);
2522
2523 extern const struct ethtool_ops ieee80211_ethtool_ops;
2524
2525 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw,
2526 struct ieee80211_vif *vif,
2527 struct ieee80211_sta *pubsta,
2528 int len, bool ampdu);
2529 #ifdef CONFIG_MAC80211_NOINLINE
2530 #define debug_noinline noinline
2531 #else
2532 #define debug_noinline
2533 #endif
2534
2535 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache);
2536 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache);
2537
2538 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2539 u8 *ieee80211_ie_build_eht_cap(u8 *pos,
2540 const struct ieee80211_sta_he_cap *he_cap,
2541 const struct ieee80211_sta_eht_cap *eht_cap,
2542 u8 *end,
2543 bool for_ap);
2544
2545 void
2546 ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata,
2547 struct ieee80211_supported_band *sband,
2548 const u8 *he_cap_ie, u8 he_cap_len,
2549 const struct ieee80211_eht_cap_elem *eht_cap_ie_elem,
2550 u8 eht_cap_len,
2551 struct link_sta_info *link_sta);
2552 #endif /* IEEE80211_I_H */
2553