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
394 u8 ap_addr[ETH_ALEN] __aligned(2);
395
396 u16 sae_trans, sae_status;
397 size_t data_len;
398 u8 data[];
399 };
400
401 struct ieee80211_mgd_assoc_data {
402 struct {
403 struct cfg80211_bss *bss;
404
405 u8 addr[ETH_ALEN] __aligned(2);
406
407 u8 ap_ht_param;
408
409 struct ieee80211_vht_cap ap_vht_cap;
410
411 size_t elems_len;
412 u8 *elems; /* pointing to inside ie[] below */
413
414 ieee80211_conn_flags_t conn_flags;
415 } link[IEEE80211_MLD_MAX_NUM_LINKS];
416
417 u8 ap_addr[ETH_ALEN] __aligned(2);
418
419 /* this is for a workaround, so we use it only for non-MLO */
420 const u8 *supp_rates;
421 u8 supp_rates_len;
422
423 unsigned long timeout;
424 int tries;
425
426 u8 prev_ap_addr[ETH_ALEN];
427 u8 ssid[IEEE80211_MAX_SSID_LEN];
428 u8 ssid_len;
429 bool wmm, uapsd;
430 bool need_beacon;
431 bool synced;
432 bool timeout_started;
433 bool s1g;
434
435 unsigned int assoc_link_id;
436
437 u8 fils_nonces[2 * FILS_NONCE_LEN];
438 u8 fils_kek[FILS_MAX_KEK_LEN];
439 size_t fils_kek_len;
440
441 size_t ie_len;
442 u8 *ie_pos; /* used to fill ie[] with link[].elems */
443 u8 ie[];
444 };
445
446 struct ieee80211_sta_tx_tspec {
447 /* timestamp of the first packet in the time slice */
448 unsigned long time_slice_start;
449
450 u32 admitted_time; /* in usecs, unlike over the air */
451 u8 tsid;
452 s8 up; /* signed to be able to invalidate with -1 during teardown */
453
454 /* consumed TX time in microseconds in the time slice */
455 u32 consumed_tx_time;
456 enum {
457 TX_TSPEC_ACTION_NONE = 0,
458 TX_TSPEC_ACTION_DOWNGRADE,
459 TX_TSPEC_ACTION_STOP_DOWNGRADE,
460 } action;
461 bool downgraded;
462 };
463
464 DECLARE_EWMA(beacon_signal, 4, 4)
465
466 struct ieee80211_if_managed {
467 struct timer_list timer;
468 struct timer_list conn_mon_timer;
469 struct timer_list bcn_mon_timer;
470 struct work_struct monitor_work;
471 struct work_struct beacon_connection_loss_work;
472 struct work_struct csa_connection_drop_work;
473
474 unsigned long beacon_timeout;
475 unsigned long probe_timeout;
476 int probe_send_count;
477 bool nullfunc_failed;
478 u8 connection_loss:1,
479 driver_disconnect:1,
480 reconnect:1,
481 associated:1;
482
483 struct ieee80211_mgd_auth_data *auth_data;
484 struct ieee80211_mgd_assoc_data *assoc_data;
485
486 bool powersave; /* powersave requested for this iface */
487 bool broken_ap; /* AP is broken -- turn off powersave */
488
489 unsigned int flags;
490
491 bool status_acked;
492 bool status_received;
493 __le16 status_fc;
494
495 enum {
496 IEEE80211_MFP_DISABLED,
497 IEEE80211_MFP_OPTIONAL,
498 IEEE80211_MFP_REQUIRED
499 } mfp; /* management frame protection */
500
501 /*
502 * Bitmask of enabled u-apsd queues,
503 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
504 * to take effect.
505 */
506 unsigned int uapsd_queues;
507
508 /*
509 * Maximum number of buffered frames AP can deliver during a
510 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
511 * Needs a new association to take effect.
512 */
513 unsigned int uapsd_max_sp_len;
514
515 u8 use_4addr;
516
517 /*
518 * State variables for keeping track of RSSI of the AP currently
519 * connected to and informing driver when RSSI has gone
520 * below/above a certain threshold.
521 */
522 int rssi_min_thold, rssi_max_thold;
523
524 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
525 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
526 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
527 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
528 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */
529 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */
530
531 /* TDLS support */
532 u8 tdls_peer[ETH_ALEN] __aligned(2);
533 struct delayed_work tdls_peer_del_work;
534 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
535 struct sk_buff *teardown_skb; /* A copy to send through the AP */
536 spinlock_t teardown_lock; /* To lock changing teardown_skb */
537 bool tdls_wider_bw_prohibited;
538
539 /* WMM-AC TSPEC support */
540 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
541 /* Use a separate work struct so that we can do something here
542 * while the sdata->work is flushing the queues, for example.
543 * otherwise, in scenarios where we hardly get any traffic out
544 * on the BE queue, but there's a lot of VO traffic, we might
545 * get stuck in a downgraded situation and flush takes forever.
546 */
547 struct delayed_work tx_tspec_wk;
548
549 /* Information elements from the last transmitted (Re)Association
550 * Request frame.
551 */
552 u8 *assoc_req_ies;
553 size_t assoc_req_ies_len;
554 };
555
556 struct ieee80211_if_ibss {
557 struct timer_list timer;
558 struct work_struct csa_connection_drop_work;
559
560 unsigned long last_scan_completed;
561
562 u32 basic_rates;
563
564 bool fixed_bssid;
565 bool fixed_channel;
566 bool privacy;
567
568 bool control_port;
569 bool userspace_handles_dfs;
570
571 u8 bssid[ETH_ALEN] __aligned(2);
572 u8 ssid[IEEE80211_MAX_SSID_LEN];
573 u8 ssid_len, ie_len;
574 u8 *ie;
575 struct cfg80211_chan_def chandef;
576
577 unsigned long ibss_join_req;
578 /* probe response/beacon for IBSS */
579 struct beacon_data __rcu *presp;
580
581 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
582 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
583
584 spinlock_t incomplete_lock;
585 struct list_head incomplete_stations;
586
587 enum {
588 IEEE80211_IBSS_MLME_SEARCH,
589 IEEE80211_IBSS_MLME_JOINED,
590 } state;
591 };
592
593 /**
594 * struct ieee80211_if_ocb - OCB mode state
595 *
596 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
597 * @wrkq_flags: OCB deferred task action
598 * @incomplete_lock: delayed STA insertion lock
599 * @incomplete_stations: list of STAs waiting for delayed insertion
600 * @joined: indication if the interface is connected to an OCB network
601 */
602 struct ieee80211_if_ocb {
603 struct timer_list housekeeping_timer;
604 unsigned long wrkq_flags;
605
606 spinlock_t incomplete_lock;
607 struct list_head incomplete_stations;
608
609 bool joined;
610 };
611
612 /**
613 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
614 *
615 * these declarations define the interface, which enables
616 * vendor-specific mesh synchronization
617 *
618 */
619 struct ieee802_11_elems;
620 struct ieee80211_mesh_sync_ops {
621 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, u16 stype,
622 struct ieee80211_mgmt *mgmt, unsigned int len,
623 const struct ieee80211_meshconf_ie *mesh_cfg,
624 struct ieee80211_rx_status *rx_status);
625
626 /* should be called with beacon_data under RCU read lock */
627 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
628 struct beacon_data *beacon);
629 /* add other framework functions here */
630 };
631
632 struct mesh_csa_settings {
633 struct rcu_head rcu_head;
634 struct cfg80211_csa_settings settings;
635 };
636
637 /**
638 * struct mesh_table
639 *
640 * @known_gates: list of known mesh gates and their mpaths by the station. The
641 * gate's mpath may or may not be resolved and active.
642 * @gates_lock: protects updates to known_gates
643 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr
644 * @walk_head: linked list containing all mesh_path objects
645 * @walk_lock: lock protecting walk_head
646 * @entries: number of entries in the table
647 */
648 struct mesh_table {
649 struct hlist_head known_gates;
650 spinlock_t gates_lock;
651 struct rhashtable rhead;
652 struct hlist_head walk_head;
653 spinlock_t walk_lock;
654 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */
655 };
656
657 struct ieee80211_if_mesh {
658 struct timer_list housekeeping_timer;
659 struct timer_list mesh_path_timer;
660 struct timer_list mesh_path_root_timer;
661
662 unsigned long wrkq_flags;
663 unsigned long mbss_changed;
664
665 bool userspace_handles_dfs;
666
667 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
668 size_t mesh_id_len;
669 /* Active Path Selection Protocol Identifier */
670 u8 mesh_pp_id;
671 /* Active Path Selection Metric Identifier */
672 u8 mesh_pm_id;
673 /* Congestion Control Mode Identifier */
674 u8 mesh_cc_id;
675 /* Synchronization Protocol Identifier */
676 u8 mesh_sp_id;
677 /* Authentication Protocol Identifier */
678 u8 mesh_auth_id;
679 /* Local mesh Sequence Number */
680 u32 sn;
681 /* Last used PREQ ID */
682 u32 preq_id;
683 atomic_t mpaths;
684 /* Timestamp of last SN update */
685 unsigned long last_sn_update;
686 /* Time when it's ok to send next PERR */
687 unsigned long next_perr;
688 /* Timestamp of last PREQ sent */
689 unsigned long last_preq;
690 struct mesh_rmc *rmc;
691 spinlock_t mesh_preq_queue_lock;
692 struct mesh_preq_queue preq_queue;
693 int preq_queue_len;
694 struct mesh_stats mshstats;
695 struct mesh_config mshcfg;
696 atomic_t estab_plinks;
697 u32 mesh_seqnum;
698 bool accepting_plinks;
699 int num_gates;
700 struct beacon_data __rcu *beacon;
701 const u8 *ie;
702 u8 ie_len;
703 enum {
704 IEEE80211_MESH_SEC_NONE = 0x0,
705 IEEE80211_MESH_SEC_AUTHED = 0x1,
706 IEEE80211_MESH_SEC_SECURED = 0x2,
707 } security;
708 bool user_mpm;
709 /* Extensible Synchronization Framework */
710 const struct ieee80211_mesh_sync_ops *sync_ops;
711 s64 sync_offset_clockdrift_max;
712 spinlock_t sync_offset_lock;
713 /* mesh power save */
714 enum nl80211_mesh_power_mode nonpeer_pm;
715 int ps_peers_light_sleep;
716 int ps_peers_deep_sleep;
717 struct ps_data ps;
718 /* Channel Switching Support */
719 struct mesh_csa_settings __rcu *csa;
720 enum {
721 IEEE80211_MESH_CSA_ROLE_NONE,
722 IEEE80211_MESH_CSA_ROLE_INIT,
723 IEEE80211_MESH_CSA_ROLE_REPEATER,
724 } csa_role;
725 u8 chsw_ttl;
726 u16 pre_value;
727
728 /* offset from skb->data while building IE */
729 int meshconf_offset;
730
731 struct mesh_table mesh_paths;
732 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */
733 int mesh_paths_generation;
734 int mpp_paths_generation;
735 };
736
737 #ifdef CONFIG_MAC80211_MESH
738 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
739 do { (msh)->mshstats.name++; } while (0)
740 #else
741 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
742 do { } while (0)
743 #endif
744
745 /**
746 * enum ieee80211_sub_if_data_flags - virtual interface flags
747 *
748 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
749 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
750 * associated stations and deliver multicast frames both
751 * back to wireless media and to the local net stack.
752 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
753 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
754 * @IEEE80211_SDATA_DISCONNECT_HW_RESTART: Disconnect after hardware restart
755 * recovery
756 */
757 enum ieee80211_sub_if_data_flags {
758 IEEE80211_SDATA_ALLMULTI = BIT(0),
759 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
760 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
761 IEEE80211_SDATA_IN_DRIVER = BIT(5),
762 IEEE80211_SDATA_DISCONNECT_HW_RESTART = BIT(6),
763 };
764
765 /**
766 * enum ieee80211_sdata_state_bits - virtual interface state bits
767 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
768 * mirrors netif_running() but is separate for interface type
769 * change handling while the interface is up
770 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
771 * mode, so queues are stopped
772 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
773 * to offchannel, reset when offchannel returns
774 */
775 enum ieee80211_sdata_state_bits {
776 SDATA_STATE_RUNNING,
777 SDATA_STATE_OFFCHANNEL,
778 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
779 };
780
781 /**
782 * enum ieee80211_chanctx_mode - channel context configuration mode
783 *
784 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
785 * multiple interfaces
786 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
787 * only by a single interface. This can be used for example for
788 * non-fixed channel IBSS.
789 */
790 enum ieee80211_chanctx_mode {
791 IEEE80211_CHANCTX_SHARED,
792 IEEE80211_CHANCTX_EXCLUSIVE
793 };
794
795 /**
796 * enum ieee80211_chanctx_replace_state - channel context replacement state
797 *
798 * This is used for channel context in-place reservations that require channel
799 * context switch/swap.
800 *
801 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
802 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
803 * by a (not yet registered) channel context pointed by %replace_ctx.
804 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
805 * replaces an existing channel context pointed to by %replace_ctx.
806 */
807 enum ieee80211_chanctx_replace_state {
808 IEEE80211_CHANCTX_REPLACE_NONE,
809 IEEE80211_CHANCTX_WILL_BE_REPLACED,
810 IEEE80211_CHANCTX_REPLACES_OTHER,
811 };
812
813 struct ieee80211_chanctx {
814 struct list_head list;
815 struct rcu_head rcu_head;
816
817 struct list_head assigned_links;
818 struct list_head reserved_links;
819
820 enum ieee80211_chanctx_replace_state replace_state;
821 struct ieee80211_chanctx *replace_ctx;
822
823 enum ieee80211_chanctx_mode mode;
824 bool driver_present;
825
826 struct ieee80211_chanctx_conf conf;
827 };
828
829 struct mac80211_qos_map {
830 struct cfg80211_qos_map qos_map;
831 struct rcu_head rcu_head;
832 };
833
834 enum txq_info_flags {
835 IEEE80211_TXQ_STOP,
836 IEEE80211_TXQ_AMPDU,
837 IEEE80211_TXQ_NO_AMSDU,
838 IEEE80211_TXQ_STOP_NETIF_TX,
839 };
840
841 /**
842 * struct txq_info - per tid queue
843 *
844 * @tin: contains packets split into multiple flows
845 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
846 * a fq_flow which is already owned by a different tin
847 * @def_cvars: codel vars for @def_flow
848 * @frags: used to keep fragments created after dequeue
849 * @schedule_order: used with ieee80211_local->active_txqs
850 * @schedule_round: counter to prevent infinite loops on TXQ scheduling
851 */
852 struct txq_info {
853 struct fq_tin tin;
854 struct codel_vars def_cvars;
855 struct codel_stats cstats;
856
857 u16 schedule_round;
858 struct list_head schedule_order;
859
860 struct sk_buff_head frags;
861
862 unsigned long flags;
863
864 /* keep last! */
865 struct ieee80211_txq txq;
866 };
867
868 struct ieee80211_if_mntr {
869 u32 flags;
870 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
871
872 struct list_head list;
873 };
874
875 /**
876 * struct ieee80211_if_nan - NAN state
877 *
878 * @conf: current NAN configuration
879 * @func_ids: a bitmap of available instance_id's
880 */
881 struct ieee80211_if_nan {
882 struct cfg80211_nan_conf conf;
883
884 /* protects function_inst_ids */
885 spinlock_t func_lock;
886 struct idr function_inst_ids;
887 };
888
889 struct ieee80211_link_data_managed {
890 u8 bssid[ETH_ALEN] __aligned(2);
891
892 u8 dtim_period;
893 enum ieee80211_smps_mode req_smps, /* requested smps mode */
894 driver_smps_mode; /* smps mode request */
895
896 ieee80211_conn_flags_t conn_flags;
897
898 s16 p2p_noa_index;
899
900 bool tdls_chan_switch_prohibited;
901
902 bool have_beacon;
903 bool tracking_signal_avg;
904 bool disable_wmm_tracking;
905 bool operating_11g_mode;
906
907 bool csa_waiting_bcn;
908 bool csa_ignored_same_chan;
909 struct timer_list chswitch_timer;
910 struct work_struct chswitch_work;
911
912 struct work_struct request_smps_work;
913 bool beacon_crc_valid;
914 u32 beacon_crc;
915 struct ewma_beacon_signal ave_beacon_signal;
916 int last_ave_beacon_signal;
917
918 /*
919 * Number of Beacon frames used in ave_beacon_signal. This can be used
920 * to avoid generating less reliable cqm events that would be based
921 * only on couple of received frames.
922 */
923 unsigned int count_beacon_signal;
924
925 /* Number of times beacon loss was invoked. */
926 unsigned int beacon_loss_count;
927
928 /*
929 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
930 * that triggered a cqm event. 0 indicates that no event has been
931 * generated for the current association.
932 */
933 int last_cqm_event_signal;
934
935 int wmm_last_param_set;
936 int mu_edca_last_param_set;
937
938 struct cfg80211_bss *bss;
939 };
940
941 struct ieee80211_link_data_ap {
942 struct beacon_data __rcu *beacon;
943 struct probe_resp __rcu *probe_resp;
944 struct fils_discovery_data __rcu *fils_discovery;
945 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp;
946
947 /* to be used after channel switch. */
948 struct cfg80211_beacon_data *next_beacon;
949 };
950
951 struct ieee80211_link_data {
952 struct ieee80211_sub_if_data *sdata;
953 unsigned int link_id;
954
955 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
956 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
957
958 /* multicast keys only */
959 struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS +
960 NUM_DEFAULT_MGMT_KEYS +
961 NUM_DEFAULT_BEACON_KEYS];
962 struct ieee80211_key __rcu *default_multicast_key;
963 struct ieee80211_key __rcu *default_mgmt_key;
964 struct ieee80211_key __rcu *default_beacon_key;
965
966 struct work_struct csa_finalize_work;
967 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
968
969 bool operating_11g_mode;
970
971 struct cfg80211_chan_def csa_chandef;
972
973 struct work_struct color_change_finalize_work;
974
975 /* context reservation -- protected with chanctx_mtx */
976 struct ieee80211_chanctx *reserved_chanctx;
977 struct cfg80211_chan_def reserved_chandef;
978 bool reserved_radar_required;
979 bool reserved_ready;
980
981 u8 needed_rx_chains;
982 enum ieee80211_smps_mode smps_mode;
983
984 int user_power_level; /* in dBm */
985 int ap_power_level; /* in dBm */
986
987 bool radar_required;
988 struct delayed_work dfs_cac_timer_work;
989
990 union {
991 struct ieee80211_link_data_managed mgd;
992 struct ieee80211_link_data_ap ap;
993 } u;
994
995 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
996
997 struct ieee80211_bss_conf *conf;
998 };
999
1000 struct ieee80211_sub_if_data {
1001 struct list_head list;
1002
1003 struct wireless_dev wdev;
1004
1005 /* keys */
1006 struct list_head key_list;
1007
1008 /* count for keys needing tailroom space allocation */
1009 int crypto_tx_tailroom_needed_cnt;
1010 int crypto_tx_tailroom_pending_dec;
1011 struct delayed_work dec_tailroom_needed_wk;
1012
1013 struct net_device *dev;
1014 struct ieee80211_local *local;
1015
1016 unsigned int flags;
1017
1018 unsigned long state;
1019
1020 char name[IFNAMSIZ];
1021
1022 struct ieee80211_fragment_cache frags;
1023
1024 /* TID bitmap for NoAck policy */
1025 u16 noack_map;
1026
1027 /* bit field of ACM bits (BIT(802.1D tag)) */
1028 u8 wmm_acm;
1029
1030 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS];
1031 struct ieee80211_key __rcu *default_unicast_key;
1032
1033 u16 sequence_number;
1034 u16 mld_mcast_seq;
1035 __be16 control_port_protocol;
1036 bool control_port_no_encrypt;
1037 bool control_port_no_preauth;
1038 bool control_port_over_nl80211;
1039
1040 atomic_t num_tx_queued;
1041 struct mac80211_qos_map __rcu *qos_map;
1042
1043 /* used to reconfigure hardware SM PS */
1044 struct work_struct recalc_smps;
1045
1046 struct work_struct work;
1047 struct sk_buff_head skb_queue;
1048 struct sk_buff_head status_queue;
1049
1050 /*
1051 * AP this belongs to: self in AP mode and
1052 * corresponding AP in VLAN mode, NULL for
1053 * all others (might be needed later in IBSS)
1054 */
1055 struct ieee80211_if_ap *bss;
1056
1057 /* bitmap of allowed (non-MCS) rate indexes for rate control */
1058 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
1059
1060 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
1061 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
1062
1063 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
1064 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
1065
1066 /* Beacon frame (non-MCS) rate (as a bitmap) */
1067 u32 beacon_rateidx_mask[NUM_NL80211_BANDS];
1068 bool beacon_rate_set;
1069
1070 union {
1071 struct ieee80211_if_ap ap;
1072 struct ieee80211_if_vlan vlan;
1073 struct ieee80211_if_managed mgd;
1074 struct ieee80211_if_ibss ibss;
1075 struct ieee80211_if_mesh mesh;
1076 struct ieee80211_if_ocb ocb;
1077 struct ieee80211_if_mntr mntr;
1078 struct ieee80211_if_nan nan;
1079 } u;
1080
1081 struct ieee80211_link_data deflink;
1082 struct ieee80211_link_data __rcu *link[IEEE80211_MLD_MAX_NUM_LINKS];
1083
1084 /* for ieee80211_set_active_links_async() */
1085 struct work_struct activate_links_work;
1086 u16 desired_active_links;
1087
1088 #ifdef CONFIG_MAC80211_DEBUGFS
1089 struct {
1090 struct dentry *subdir_stations;
1091 struct dentry *default_unicast_key;
1092 struct dentry *default_multicast_key;
1093 struct dentry *default_mgmt_key;
1094 struct dentry *default_beacon_key;
1095 } debugfs;
1096 #endif
1097
1098 /* must be last, dynamically sized area in this! */
1099 struct ieee80211_vif vif;
1100 };
1101
1102 static inline
vif_to_sdata(struct ieee80211_vif * p)1103 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
1104 {
1105 return container_of(p, struct ieee80211_sub_if_data, vif);
1106 }
1107
sdata_lock(struct ieee80211_sub_if_data * sdata)1108 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
1109 __acquires(&sdata->wdev.mtx)
1110 {
1111 mutex_lock(&sdata->wdev.mtx);
1112 __acquire(&sdata->wdev.mtx);
1113 }
1114
sdata_unlock(struct ieee80211_sub_if_data * sdata)1115 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
1116 __releases(&sdata->wdev.mtx)
1117 {
1118 mutex_unlock(&sdata->wdev.mtx);
1119 __release(&sdata->wdev.mtx);
1120 }
1121
1122 #define sdata_dereference(p, sdata) \
1123 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
1124
1125 static inline void
sdata_assert_lock(struct ieee80211_sub_if_data * sdata)1126 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
1127 {
1128 lockdep_assert_held(&sdata->wdev.mtx);
1129 }
1130
1131 static inline int
ieee80211_chanwidth_get_shift(enum nl80211_chan_width width)1132 ieee80211_chanwidth_get_shift(enum nl80211_chan_width width)
1133 {
1134 switch (width) {
1135 case NL80211_CHAN_WIDTH_5:
1136 return 2;
1137 case NL80211_CHAN_WIDTH_10:
1138 return 1;
1139 default:
1140 return 0;
1141 }
1142 }
1143
1144 static inline int
ieee80211_chandef_get_shift(struct cfg80211_chan_def * chandef)1145 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1146 {
1147 return ieee80211_chanwidth_get_shift(chandef->width);
1148 }
1149
1150 static inline int
ieee80211_vif_get_shift(struct ieee80211_vif * vif)1151 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1152 {
1153 struct ieee80211_chanctx_conf *chanctx_conf;
1154 int shift = 0;
1155
1156 rcu_read_lock();
1157 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf);
1158 if (chanctx_conf)
1159 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1160 rcu_read_unlock();
1161
1162 return shift;
1163 }
1164
1165 static inline int
ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems * elems)1166 ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems)
1167 {
1168 int i, len = 0;
1169
1170 if (!elems)
1171 return 0;
1172
1173 for (i = 0; i < elems->cnt; i++)
1174 len += elems->elem[i].len;
1175
1176 return len;
1177 }
1178
1179 enum {
1180 IEEE80211_RX_MSG = 1,
1181 IEEE80211_TX_STATUS_MSG = 2,
1182 };
1183
1184 enum queue_stop_reason {
1185 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1186 IEEE80211_QUEUE_STOP_REASON_PS,
1187 IEEE80211_QUEUE_STOP_REASON_CSA,
1188 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1189 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1190 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1191 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1192 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1193 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1194 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1195 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE,
1196
1197 IEEE80211_QUEUE_STOP_REASONS,
1198 };
1199
1200 #ifdef CONFIG_MAC80211_LEDS
1201 struct tpt_led_trigger {
1202 char name[32];
1203 const struct ieee80211_tpt_blink *blink_table;
1204 unsigned int blink_table_len;
1205 struct timer_list timer;
1206 struct ieee80211_local *local;
1207 unsigned long prev_traffic;
1208 unsigned long tx_bytes, rx_bytes;
1209 unsigned int active, want;
1210 bool running;
1211 };
1212 #endif
1213
1214 /**
1215 * mac80211 scan flags - currently active scan mode
1216 *
1217 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1218 * well be on the operating channel
1219 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1220 * determine if we are on the operating channel or not
1221 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1222 * channel. This should not interrupt normal traffic.
1223 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1224 * that the scan completed.
1225 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1226 * a scan complete for an aborted scan.
1227 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1228 * cancelled.
1229 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR
1230 * and could send a probe request after receiving a beacon.
1231 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request
1232 */
1233 enum {
1234 SCAN_SW_SCANNING,
1235 SCAN_HW_SCANNING,
1236 SCAN_ONCHANNEL_SCANNING,
1237 SCAN_COMPLETED,
1238 SCAN_ABORTED,
1239 SCAN_HW_CANCELLED,
1240 SCAN_BEACON_WAIT,
1241 SCAN_BEACON_DONE,
1242 };
1243
1244 /**
1245 * enum mac80211_scan_state - scan state machine states
1246 *
1247 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1248 * determines if we should keep on scanning or switch back to the
1249 * operating channel
1250 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1251 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1252 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1253 * send out data
1254 * @SCAN_RESUME: Resume the scan and scan the next channel
1255 * @SCAN_ABORT: Abort the scan and go back to operating channel
1256 */
1257 enum mac80211_scan_state {
1258 SCAN_DECISION,
1259 SCAN_SET_CHANNEL,
1260 SCAN_SEND_PROBE,
1261 SCAN_SUSPEND,
1262 SCAN_RESUME,
1263 SCAN_ABORT,
1264 };
1265
1266 DECLARE_STATIC_KEY_FALSE(aql_disable);
1267
1268 struct ieee80211_local {
1269 /* embed the driver visible part.
1270 * don't cast (use the static inlines below), but we keep
1271 * it first anyway so they become a no-op */
1272 struct ieee80211_hw hw;
1273
1274 struct fq fq;
1275 struct codel_vars *cvars;
1276 struct codel_params cparams;
1277
1278 /* protects active_txqs and txqi->schedule_order */
1279 spinlock_t active_txq_lock[IEEE80211_NUM_ACS];
1280 struct list_head active_txqs[IEEE80211_NUM_ACS];
1281 u16 schedule_round[IEEE80211_NUM_ACS];
1282
1283 u16 airtime_flags;
1284 u32 aql_txq_limit_low[IEEE80211_NUM_ACS];
1285 u32 aql_txq_limit_high[IEEE80211_NUM_ACS];
1286 u32 aql_threshold;
1287 atomic_t aql_total_pending_airtime;
1288 atomic_t aql_ac_pending_airtime[IEEE80211_NUM_ACS];
1289
1290 const struct ieee80211_ops *ops;
1291
1292 /*
1293 * private workqueue to mac80211. mac80211 makes this accessible
1294 * via ieee80211_queue_work()
1295 */
1296 struct workqueue_struct *workqueue;
1297
1298 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1299 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1300 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1301 spinlock_t queue_stop_reason_lock;
1302
1303 int open_count;
1304 int monitors, cooked_mntrs;
1305 /* number of interfaces with corresponding FIF_ flags */
1306 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1307 fif_probe_req;
1308 bool probe_req_reg;
1309 bool rx_mcast_action_reg;
1310 unsigned int filter_flags; /* FIF_* */
1311
1312 bool wiphy_ciphers_allocated;
1313
1314 bool use_chanctx;
1315
1316 /* protects the aggregated multicast list and filter calls */
1317 spinlock_t filter_lock;
1318
1319 /* used for uploading changed mc list */
1320 struct work_struct reconfig_filter;
1321
1322 /* aggregated multicast list */
1323 struct netdev_hw_addr_list mc_list;
1324
1325 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1326
1327 /*
1328 * suspended is true if we finished all the suspend _and_ we have
1329 * not yet come up from resume. This is to be used by mac80211
1330 * to ensure driver sanity during suspend and mac80211's own
1331 * sanity. It can eventually be used for WoW as well.
1332 */
1333 bool suspended;
1334
1335 /* suspending is true during the whole suspend process */
1336 bool suspending;
1337
1338 /*
1339 * Resuming is true while suspended, but when we're reprogramming the
1340 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1341 * again even though some other parts of the stack are still suspended
1342 * and we still drop received frames to avoid waking the stack.
1343 */
1344 bool resuming;
1345
1346 /*
1347 * quiescing is true during the suspend process _only_ to
1348 * ease timer cancelling etc.
1349 */
1350 bool quiescing;
1351
1352 /* device is started */
1353 bool started;
1354
1355 /* device is during a HW reconfig */
1356 bool in_reconfig;
1357
1358 /* wowlan is enabled -- don't reconfig on resume */
1359 bool wowlan;
1360
1361 struct work_struct radar_detected_work;
1362
1363 /* number of RX chains the hardware has */
1364 u8 rx_chains;
1365
1366 /* bitmap of which sbands were copied */
1367 u8 sband_allocated;
1368
1369 int tx_headroom; /* required headroom for hardware/radiotap */
1370
1371 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1372 * added to skb_queue will be processed, but frames in
1373 * skb_queue_unreliable may be dropped if the total length of these
1374 * queues increases over the limit. */
1375 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1376 struct tasklet_struct tasklet;
1377 struct sk_buff_head skb_queue;
1378 struct sk_buff_head skb_queue_unreliable;
1379
1380 spinlock_t rx_path_lock;
1381
1382 /* Station data */
1383 /*
1384 * The mutex only protects the list, hash table and
1385 * counter, reads are done with RCU.
1386 */
1387 struct mutex sta_mtx;
1388 spinlock_t tim_lock;
1389 unsigned long num_sta;
1390 struct list_head sta_list;
1391 struct rhltable sta_hash;
1392 struct rhltable link_sta_hash;
1393 struct timer_list sta_cleanup;
1394 int sta_generation;
1395
1396 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1397 struct tasklet_struct tx_pending_tasklet;
1398 struct tasklet_struct wake_txqs_tasklet;
1399
1400 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1401
1402 /* number of interfaces with allmulti RX */
1403 atomic_t iff_allmultis;
1404
1405 struct rate_control_ref *rate_ctrl;
1406
1407 struct arc4_ctx wep_tx_ctx;
1408 struct arc4_ctx wep_rx_ctx;
1409 u32 wep_iv;
1410
1411 /* see iface.c */
1412 struct list_head interfaces;
1413 struct list_head mon_list; /* only that are IFF_UP && !cooked */
1414 struct mutex iflist_mtx;
1415
1416 /*
1417 * Key mutex, protects sdata's key_list and sta_info's
1418 * key pointers and ptk_idx (write access, they're RCU.)
1419 */
1420 struct mutex key_mtx;
1421
1422 /* mutex for scan and work locking */
1423 struct mutex mtx;
1424
1425 /* Scanning and BSS list */
1426 unsigned long scanning;
1427 struct cfg80211_ssid scan_ssid;
1428 struct cfg80211_scan_request *int_scan_req;
1429 struct cfg80211_scan_request __rcu *scan_req;
1430 struct ieee80211_scan_request *hw_scan_req;
1431 struct cfg80211_chan_def scan_chandef;
1432 enum nl80211_band hw_scan_band;
1433 int scan_channel_idx;
1434 int scan_ies_len;
1435 int hw_scan_ies_bufsize;
1436 struct cfg80211_scan_info scan_info;
1437
1438 struct work_struct sched_scan_stopped_work;
1439 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1440 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1441 u8 scan_addr[ETH_ALEN];
1442
1443 unsigned long leave_oper_channel_time;
1444 enum mac80211_scan_state next_scan_state;
1445 struct delayed_work scan_work;
1446 struct ieee80211_sub_if_data __rcu *scan_sdata;
1447 /* For backward compatibility only -- do not use */
1448 struct cfg80211_chan_def _oper_chandef;
1449
1450 /* Temporary remain-on-channel for off-channel operations */
1451 struct ieee80211_channel *tmp_channel;
1452
1453 /* channel contexts */
1454 struct list_head chanctx_list;
1455 struct mutex chanctx_mtx;
1456
1457 #ifdef CONFIG_MAC80211_LEDS
1458 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1459 struct led_trigger tpt_led;
1460 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1461 atomic_t radio_led_active, tpt_led_active;
1462 struct tpt_led_trigger *tpt_led_trigger;
1463 #endif
1464
1465 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1466 /* SNMP counters */
1467 /* dot11CountersTable */
1468 u32 dot11TransmittedFragmentCount;
1469 u32 dot11MulticastTransmittedFrameCount;
1470 u32 dot11FailedCount;
1471 u32 dot11RetryCount;
1472 u32 dot11MultipleRetryCount;
1473 u32 dot11FrameDuplicateCount;
1474 u32 dot11ReceivedFragmentCount;
1475 u32 dot11MulticastReceivedFrameCount;
1476 u32 dot11TransmittedFrameCount;
1477
1478 /* TX/RX handler statistics */
1479 unsigned int tx_handlers_drop;
1480 unsigned int tx_handlers_queued;
1481 unsigned int tx_handlers_drop_wep;
1482 unsigned int tx_handlers_drop_not_assoc;
1483 unsigned int tx_handlers_drop_unauth_port;
1484 unsigned int rx_handlers_drop;
1485 unsigned int rx_handlers_queued;
1486 unsigned int rx_handlers_drop_nullfunc;
1487 unsigned int rx_handlers_drop_defrag;
1488 unsigned int tx_expand_skb_head;
1489 unsigned int tx_expand_skb_head_cloned;
1490 unsigned int rx_expand_skb_head_defrag;
1491 unsigned int rx_handlers_fragments;
1492 unsigned int tx_status_drop;
1493 #define I802_DEBUG_INC(c) (c)++
1494 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1495 #define I802_DEBUG_INC(c) do { } while (0)
1496 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1497
1498
1499 int total_ps_buffered; /* total number of all buffered unicast and
1500 * multicast packets for power saving stations
1501 */
1502
1503 bool pspolling;
1504 /*
1505 * PS can only be enabled when we have exactly one managed
1506 * interface (and monitors) in PS, this then points there.
1507 */
1508 struct ieee80211_sub_if_data *ps_sdata;
1509 struct work_struct dynamic_ps_enable_work;
1510 struct work_struct dynamic_ps_disable_work;
1511 struct timer_list dynamic_ps_timer;
1512 struct notifier_block ifa_notifier;
1513 struct notifier_block ifa6_notifier;
1514
1515 /*
1516 * The dynamic ps timeout configured from user space via WEXT -
1517 * this will override whatever chosen by mac80211 internally.
1518 */
1519 int dynamic_ps_forced_timeout;
1520
1521 int user_power_level; /* in dBm, for all interfaces */
1522
1523 enum ieee80211_smps_mode smps_mode;
1524
1525 struct work_struct restart_work;
1526
1527 #ifdef CONFIG_MAC80211_DEBUGFS
1528 struct local_debugfsdentries {
1529 struct dentry *rcdir;
1530 struct dentry *keys;
1531 } debugfs;
1532 bool force_tx_status;
1533 #endif
1534
1535 /*
1536 * Remain-on-channel support
1537 */
1538 struct delayed_work roc_work;
1539 struct list_head roc_list;
1540 struct work_struct hw_roc_start, hw_roc_done;
1541 unsigned long hw_roc_start_time;
1542 u64 roc_cookie_counter;
1543
1544 struct idr ack_status_frames;
1545 spinlock_t ack_status_lock;
1546
1547 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1548
1549 /* virtual monitor interface */
1550 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1551 struct cfg80211_chan_def monitor_chandef;
1552
1553 /* extended capabilities provided by mac80211 */
1554 u8 ext_capa[8];
1555 };
1556
1557 static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(const struct net_device * dev)1558 IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev)
1559 {
1560 return netdev_priv(dev);
1561 }
1562
1563 static inline struct ieee80211_sub_if_data *
IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev * wdev)1564 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1565 {
1566 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1567 }
1568
1569 static inline struct ieee80211_supported_band *
ieee80211_get_sband(struct ieee80211_sub_if_data * sdata)1570 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1571 {
1572 struct ieee80211_local *local = sdata->local;
1573 struct ieee80211_chanctx_conf *chanctx_conf;
1574 enum nl80211_band band;
1575
1576 WARN_ON(sdata->vif.valid_links);
1577
1578 rcu_read_lock();
1579 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
1580
1581 if (!chanctx_conf) {
1582 rcu_read_unlock();
1583 return NULL;
1584 }
1585
1586 band = chanctx_conf->def.chan->band;
1587 rcu_read_unlock();
1588
1589 return local->hw.wiphy->bands[band];
1590 }
1591
1592 static inline struct ieee80211_supported_band *
ieee80211_get_link_sband(struct ieee80211_link_data * link)1593 ieee80211_get_link_sband(struct ieee80211_link_data *link)
1594 {
1595 struct ieee80211_local *local = link->sdata->local;
1596 struct ieee80211_chanctx_conf *chanctx_conf;
1597 enum nl80211_band band;
1598
1599 rcu_read_lock();
1600 chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
1601 if (!chanctx_conf) {
1602 rcu_read_unlock();
1603 return NULL;
1604 }
1605
1606 band = chanctx_conf->def.chan->band;
1607 rcu_read_unlock();
1608
1609 return local->hw.wiphy->bands[band];
1610 }
1611
1612 /* this struct holds the value parsing from channel switch IE */
1613 struct ieee80211_csa_ie {
1614 struct cfg80211_chan_def chandef;
1615 u8 mode;
1616 u8 count;
1617 u8 ttl;
1618 u16 pre_value;
1619 u16 reason_code;
1620 u32 max_switch_time;
1621 };
1622
1623 /* Parsed Information Elements */
1624 struct ieee802_11_elems {
1625 const u8 *ie_start;
1626 size_t total_len;
1627 u32 crc;
1628
1629 /* pointers to IEs */
1630 const struct ieee80211_tdls_lnkie *lnk_id;
1631 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1632 const u8 *ext_capab;
1633 const u8 *ssid;
1634 const u8 *supp_rates;
1635 const u8 *ds_params;
1636 const struct ieee80211_tim_ie *tim;
1637 const u8 *rsn;
1638 const u8 *rsnx;
1639 const u8 *erp_info;
1640 const u8 *ext_supp_rates;
1641 const u8 *wmm_info;
1642 const u8 *wmm_param;
1643 const struct ieee80211_ht_cap *ht_cap_elem;
1644 const struct ieee80211_ht_operation *ht_operation;
1645 const struct ieee80211_vht_cap *vht_cap_elem;
1646 const struct ieee80211_vht_operation *vht_operation;
1647 const struct ieee80211_meshconf_ie *mesh_config;
1648 const u8 *he_cap;
1649 const struct ieee80211_he_operation *he_operation;
1650 const struct ieee80211_he_spr *he_spr;
1651 const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1652 const struct ieee80211_he_6ghz_capa *he_6ghz_capa;
1653 const struct ieee80211_tx_pwr_env *tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT];
1654 const u8 *uora_element;
1655 const u8 *mesh_id;
1656 const u8 *peering;
1657 const __le16 *awake_window;
1658 const u8 *preq;
1659 const u8 *prep;
1660 const u8 *perr;
1661 const struct ieee80211_rann_ie *rann;
1662 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1663 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1664 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1665 const u8 *max_channel_switch_time;
1666 const u8 *country_elem;
1667 const u8 *pwr_constr_elem;
1668 const u8 *cisco_dtpc_elem;
1669 const struct ieee80211_timeout_interval_ie *timeout_int;
1670 const u8 *opmode_notif;
1671 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1672 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1673 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1674 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
1675 const struct ieee80211_bssid_index *bssid_index;
1676 u8 max_bssid_indicator;
1677 u8 dtim_count;
1678 u8 dtim_period;
1679 const struct ieee80211_addba_ext_ie *addba_ext_ie;
1680 const struct ieee80211_s1g_cap *s1g_capab;
1681 const struct ieee80211_s1g_oper_ie *s1g_oper;
1682 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat;
1683 const struct ieee80211_aid_response_ie *aid_resp;
1684 const struct ieee80211_eht_cap_elem *eht_cap;
1685 const struct ieee80211_eht_operation *eht_operation;
1686 const struct ieee80211_multi_link_elem *multi_link;
1687
1688 /* length of them, respectively */
1689 u8 ext_capab_len;
1690 u8 ssid_len;
1691 u8 supp_rates_len;
1692 u8 tim_len;
1693 u8 rsn_len;
1694 u8 rsnx_len;
1695 u8 ext_supp_rates_len;
1696 u8 wmm_info_len;
1697 u8 wmm_param_len;
1698 u8 he_cap_len;
1699 u8 mesh_id_len;
1700 u8 peering_len;
1701 u8 preq_len;
1702 u8 prep_len;
1703 u8 perr_len;
1704 u8 country_elem_len;
1705 u8 bssid_index_len;
1706 u8 tx_pwr_env_len[IEEE80211_TPE_MAX_IE_COUNT];
1707 u8 tx_pwr_env_num;
1708 u8 eht_cap_len;
1709
1710 /* whether a parse error occurred while retrieving these elements */
1711 bool parse_error;
1712
1713 /*
1714 * scratch buffer that can be used for various element parsing related
1715 * tasks, e.g., element de-fragmentation etc.
1716 */
1717 size_t scratch_len;
1718 u8 *scratch_pos;
1719 u8 scratch[];
1720 };
1721
hw_to_local(struct ieee80211_hw * hw)1722 static inline struct ieee80211_local *hw_to_local(
1723 struct ieee80211_hw *hw)
1724 {
1725 return container_of(hw, struct ieee80211_local, hw);
1726 }
1727
to_txq_info(struct ieee80211_txq * txq)1728 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1729 {
1730 return container_of(txq, struct txq_info, txq);
1731 }
1732
txq_has_queue(struct ieee80211_txq * txq)1733 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1734 {
1735 struct txq_info *txqi = to_txq_info(txq);
1736
1737 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1738 }
1739
1740 static inline bool
ieee80211_have_rx_timestamp(struct ieee80211_rx_status * status)1741 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1742 {
1743 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1744 status->flag & RX_FLAG_MACTIME_END);
1745 return !!(status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END |
1746 RX_FLAG_MACTIME_PLCP_START));
1747 }
1748
1749 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1750 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1751
1752 /* This function returns the number of multicast stations connected to this
1753 * interface. It returns -1 if that number is not tracked, that is for netdevs
1754 * not in AP or AP_VLAN mode or when using 4addr.
1755 */
1756 static inline int
ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data * sdata)1757 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1758 {
1759 if (sdata->vif.type == NL80211_IFTYPE_AP)
1760 return atomic_read(&sdata->u.ap.num_mcast_sta);
1761 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1762 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1763 return -1;
1764 }
1765
1766 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1767 struct ieee80211_rx_status *status,
1768 unsigned int mpdu_len,
1769 unsigned int mpdu_offset);
1770 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1771 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1772 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1773 u64 changed);
1774 void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata,
1775 u64 changed);
1776 void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata,
1777 struct ieee80211_link_data *link,
1778 u64 changed);
1779 void ieee80211_configure_filter(struct ieee80211_local *local);
1780 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1781
1782 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1783 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1784 u64 *cookie, gfp_t gfp);
1785
1786 void ieee80211_check_fast_rx(struct sta_info *sta);
1787 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1788 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1789 void ieee80211_clear_fast_rx(struct sta_info *sta);
1790
1791 bool ieee80211_is_our_addr(struct ieee80211_sub_if_data *sdata,
1792 const u8 *addr, int *out_link_id);
1793
1794 /* STA code */
1795 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1796 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1797 struct cfg80211_auth_request *req);
1798 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1799 struct cfg80211_assoc_request *req);
1800 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1801 struct cfg80211_deauth_request *req);
1802 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1803 struct cfg80211_disassoc_request *req);
1804 void ieee80211_send_pspoll(struct ieee80211_local *local,
1805 struct ieee80211_sub_if_data *sdata);
1806 void ieee80211_recalc_ps(struct ieee80211_local *local);
1807 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1808 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1809 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1810 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1811 struct sk_buff *skb);
1812 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
1813 struct sk_buff *skb);
1814 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1815 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1816 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1817 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1818 __le16 fc, bool acked);
1819 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1820 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1821 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1822 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
1823 u8 reason, bool tx);
1824 void ieee80211_mgd_setup_link(struct ieee80211_link_data *link);
1825 void ieee80211_mgd_stop_link(struct ieee80211_link_data *link);
1826 void ieee80211_mgd_set_link_qos_params(struct ieee80211_link_data *link);
1827
1828 /* IBSS code */
1829 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1830 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1831 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1832 const u8 *bssid, const u8 *addr, u32 supp_rates);
1833 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1834 struct cfg80211_ibss_params *params);
1835 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1836 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1837 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1838 struct sk_buff *skb);
1839 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1840 struct cfg80211_csa_settings *csa_settings);
1841 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1842 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1843
1844 /* OCB code */
1845 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1846 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1847 const u8 *bssid, const u8 *addr, u32 supp_rates);
1848 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1849 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1850 struct ocb_setup *setup);
1851 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1852
1853 /* mesh code */
1854 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1855 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1856 struct sk_buff *skb);
1857 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1858 struct cfg80211_csa_settings *csa_settings);
1859 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1860
1861 /* scan/BSS handling */
1862 void ieee80211_scan_work(struct work_struct *work);
1863 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1864 const u8 *ssid, u8 ssid_len,
1865 struct ieee80211_channel **channels,
1866 unsigned int n_channels,
1867 enum nl80211_bss_scan_width scan_width);
1868 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1869 struct cfg80211_scan_request *req);
1870 void ieee80211_scan_cancel(struct ieee80211_local *local);
1871 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1872 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1873
1874 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1875 struct ieee80211_bss *
1876 ieee80211_bss_info_update(struct ieee80211_local *local,
1877 struct ieee80211_rx_status *rx_status,
1878 struct ieee80211_mgmt *mgmt,
1879 size_t len,
1880 struct ieee80211_channel *channel);
1881 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1882 struct ieee80211_bss *bss);
1883
1884 /* scheduled scan handling */
1885 int
1886 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1887 struct cfg80211_sched_scan_request *req);
1888 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1889 struct cfg80211_sched_scan_request *req);
1890 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1891 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1892 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1893
1894 /* off-channel/mgmt-tx */
1895 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1896 void ieee80211_offchannel_return(struct ieee80211_local *local);
1897 void ieee80211_roc_setup(struct ieee80211_local *local);
1898 void ieee80211_start_next_roc(struct ieee80211_local *local);
1899 void ieee80211_roc_purge(struct ieee80211_local *local,
1900 struct ieee80211_sub_if_data *sdata);
1901 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1902 struct ieee80211_channel *chan,
1903 unsigned int duration, u64 *cookie);
1904 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1905 struct wireless_dev *wdev, u64 cookie);
1906 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1907 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1908 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1909 struct wireless_dev *wdev, u64 cookie);
1910
1911 /* channel switch handling */
1912 void ieee80211_csa_finalize_work(struct work_struct *work);
1913 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1914 struct cfg80211_csa_settings *params);
1915
1916 /* color change handling */
1917 void ieee80211_color_change_finalize_work(struct work_struct *work);
1918
1919 /* interface handling */
1920 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
1921 NETIF_F_HW_CSUM | NETIF_F_SG | \
1922 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE)
1923 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM)
1924 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \
1925 MAC80211_SUPPORTED_FEATURES_RX)
1926
1927 int ieee80211_iface_init(void);
1928 void ieee80211_iface_exit(void);
1929 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1930 unsigned char name_assign_type,
1931 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1932 struct vif_params *params);
1933 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1934 enum nl80211_iftype type);
1935 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1936 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1937 u32 ieee80211_idle_off(struct ieee80211_local *local);
1938 void ieee80211_recalc_idle(struct ieee80211_local *local);
1939 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1940 const int offset);
1941 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1942 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1943 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1944 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1945
1946 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1947 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1948 bool update_bss);
1949 void ieee80211_recalc_offload(struct ieee80211_local *local);
1950
ieee80211_sdata_running(struct ieee80211_sub_if_data * sdata)1951 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1952 {
1953 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1954 }
1955
1956 /* link handling */
1957 void ieee80211_link_setup(struct ieee80211_link_data *link);
1958 void ieee80211_link_init(struct ieee80211_sub_if_data *sdata,
1959 int link_id,
1960 struct ieee80211_link_data *link,
1961 struct ieee80211_bss_conf *link_conf);
1962 void ieee80211_link_stop(struct ieee80211_link_data *link);
1963 int ieee80211_vif_set_links(struct ieee80211_sub_if_data *sdata,
1964 u16 new_links);
1965 void ieee80211_vif_clear_links(struct ieee80211_sub_if_data *sdata);
1966
1967 /* tx handling */
1968 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1969 void ieee80211_tx_pending(struct tasklet_struct *t);
1970 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1971 struct net_device *dev);
1972 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1973 struct net_device *dev);
1974 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb,
1975 struct net_device *dev);
1976 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1977 struct net_device *dev,
1978 u32 info_flags,
1979 u32 ctrl_flags,
1980 u64 *cookie);
1981 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1982 struct sk_buff_head *skbs);
1983 struct sk_buff *
1984 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1985 struct sk_buff *skb, u32 info_flags);
1986 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1987 int retry_count, int shift, bool send_to_cooked,
1988 struct ieee80211_tx_status *status);
1989
1990 void ieee80211_check_fast_xmit(struct sta_info *sta);
1991 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1992 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1993 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1994 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
1995 const u8 *buf, size_t len,
1996 const u8 *dest, __be16 proto, bool unencrypted,
1997 int link_id, u64 *cookie);
1998 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
1999 const u8 *buf, size_t len);
2000
2001 /* HT */
2002 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
2003 struct ieee80211_sta_ht_cap *ht_cap);
2004 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
2005 struct ieee80211_supported_band *sband,
2006 const struct ieee80211_ht_cap *ht_cap_ie,
2007 struct link_sta_info *link_sta);
2008 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
2009 const u8 *da, u16 tid,
2010 u16 initiator, u16 reason_code);
2011 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
2012 enum ieee80211_smps_mode smps, const u8 *da,
2013 const u8 *bssid);
2014 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
2015 enum ieee80211_smps_mode smps_mode_new);
2016
2017 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
2018 u16 initiator, u16 reason, bool stop);
2019 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
2020 u16 initiator, u16 reason, bool stop);
2021 void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
2022 u8 dialog_token, u16 timeout,
2023 u16 start_seq_num, u16 ba_policy, u16 tid,
2024 u16 buf_size, bool tx, bool auto_seq,
2025 const struct ieee80211_addba_ext_ie *addbaext);
2026 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
2027 enum ieee80211_agg_stop_reason reason);
2028 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
2029 struct sta_info *sta,
2030 struct ieee80211_mgmt *mgmt, size_t len);
2031 void ieee80211_process_addba_resp(struct ieee80211_local *local,
2032 struct sta_info *sta,
2033 struct ieee80211_mgmt *mgmt,
2034 size_t len);
2035 void ieee80211_process_addba_request(struct ieee80211_local *local,
2036 struct sta_info *sta,
2037 struct ieee80211_mgmt *mgmt,
2038 size_t len);
2039
2040 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2041 enum ieee80211_agg_stop_reason reason);
2042 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2043 enum ieee80211_agg_stop_reason reason);
2044 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
2045 struct tid_ampdu_tx *tid_tx);
2046 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
2047 struct tid_ampdu_tx *tid_tx);
2048 void ieee80211_ba_session_work(struct work_struct *work);
2049 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
2050 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
2051
2052 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
2053 enum nl80211_smps_mode
2054 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
2055
2056 /* VHT */
2057 void
2058 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
2059 struct ieee80211_supported_band *sband,
2060 const struct ieee80211_vht_cap *vht_cap_ie,
2061 struct link_sta_info *link_sta);
2062 enum ieee80211_sta_rx_bandwidth
2063 ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta);
2064 enum ieee80211_sta_rx_bandwidth
2065 ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta);
2066 void ieee80211_sta_set_rx_nss(struct link_sta_info *link_sta);
2067 enum ieee80211_sta_rx_bandwidth
2068 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
2069 enum nl80211_chan_width
2070 ieee80211_sta_cap_chan_bw(struct link_sta_info *link_sta);
2071 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
2072 struct ieee80211_link_data *link,
2073 struct ieee80211_mgmt *mgmt);
2074 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2075 struct link_sta_info *sta,
2076 u8 opmode, enum nl80211_band band);
2077 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2078 struct link_sta_info *sta,
2079 u8 opmode, enum nl80211_band band);
2080 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
2081 struct ieee80211_sta_vht_cap *vht_cap);
2082 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
2083 u16 vht_mask[NL80211_VHT_NSS_MAX]);
2084 enum nl80211_chan_width
2085 ieee80211_sta_rx_bw_to_chan_width(struct link_sta_info *sta);
2086
2087 /* HE */
2088 void
2089 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
2090 struct ieee80211_supported_band *sband,
2091 const u8 *he_cap_ie, u8 he_cap_len,
2092 const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
2093 struct link_sta_info *link_sta);
2094 void
2095 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
2096 const struct ieee80211_he_spr *he_spr_ie_elem);
2097
2098 void
2099 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
2100 const struct ieee80211_he_operation *he_op_ie_elem);
2101
2102 /* S1G */
2103 void ieee80211_s1g_sta_rate_init(struct sta_info *sta);
2104 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb);
2105 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata,
2106 struct sk_buff *skb);
2107 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata,
2108 struct sk_buff *skb);
2109
2110 /* Spectrum management */
2111 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
2112 struct ieee80211_mgmt *mgmt,
2113 size_t len);
2114 /**
2115 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
2116 * @sdata: the sdata of the interface which has received the frame
2117 * @elems: parsed 802.11 elements received with the frame
2118 * @current_band: indicates the current band
2119 * @vht_cap_info: VHT capabilities of the transmitter
2120 * @conn_flags: contains information about own capabilities and restrictions
2121 * to decide which channel switch announcements can be accepted, using
2122 * flags from &enum ieee80211_conn_flags.
2123 * @bssid: the currently connected bssid (for reporting)
2124 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
2125 All of them will be filled with if success only.
2126 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
2127 */
2128 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
2129 struct ieee802_11_elems *elems,
2130 enum nl80211_band current_band,
2131 u32 vht_cap_info,
2132 ieee80211_conn_flags_t conn_flags, u8 *bssid,
2133 struct ieee80211_csa_ie *csa_ie);
2134
2135 /* Suspend/resume and hw reconfiguration */
2136 int ieee80211_reconfig(struct ieee80211_local *local);
2137 void ieee80211_stop_device(struct ieee80211_local *local);
2138
2139 int __ieee80211_suspend(struct ieee80211_hw *hw,
2140 struct cfg80211_wowlan *wowlan);
2141
__ieee80211_resume(struct ieee80211_hw * hw)2142 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
2143 {
2144 struct ieee80211_local *local = hw_to_local(hw);
2145
2146 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
2147 !test_bit(SCAN_COMPLETED, &local->scanning),
2148 "%s: resume with hardware scan still in progress\n",
2149 wiphy_name(hw->wiphy));
2150
2151 return ieee80211_reconfig(hw_to_local(hw));
2152 }
2153
2154 /* utility functions/constants */
2155 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
2156 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
2157 int rate, int erp, int short_preamble,
2158 int shift);
2159 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
2160 struct ieee80211_tx_queue_params *qparam,
2161 int ac);
2162 void ieee80211_set_wmm_default(struct ieee80211_link_data *link,
2163 bool bss_notify, bool enable_qos);
2164 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
2165 struct sta_info *sta, struct sk_buff *skb);
2166
2167 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2168 struct sk_buff *skb, int tid, int link_id,
2169 enum nl80211_band band);
2170
2171 /* sta_out needs to be checked for ERR_PTR() before using */
2172 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata,
2173 struct sk_buff *skb,
2174 struct sta_info **sta_out);
2175
2176 static inline void
ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid,enum nl80211_band band)2177 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2178 struct sk_buff *skb, int tid,
2179 enum nl80211_band band)
2180 {
2181 rcu_read_lock();
2182 __ieee80211_tx_skb_tid_band(sdata, skb, tid, -1, band);
2183 rcu_read_unlock();
2184 }
2185
2186 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
2187 struct sk_buff *skb, int tid, int link_id);
2188
ieee80211_tx_skb(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb)2189 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
2190 struct sk_buff *skb)
2191 {
2192 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
2193 ieee80211_tx_skb_tid(sdata, skb, 7, -1);
2194 }
2195
2196 /**
2197 * struct ieee80211_elems_parse_params - element parsing parameters
2198 * @start: pointer to the elements
2199 * @len: length of the elements
2200 * @action: %true if the elements came from an action frame
2201 * @filter: bitmap of element IDs to filter out while calculating
2202 * the element CRC
2203 * @crc: CRC starting value
2204 * @bss: the BSS to parse this as, for multi-BSSID cases this can
2205 * represent a non-transmitting BSS in which case the data
2206 * for that non-transmitting BSS is returned
2207 * @link_id: the link ID to parse elements for, if a STA profile
2208 * is present in the multi-link element, or -1 to ignore
2209 * @from_ap: frame is received from an AP (currently used only
2210 * for EHT capabilities parsing)
2211 */
2212 struct ieee80211_elems_parse_params {
2213 const u8 *start;
2214 size_t len;
2215 bool action;
2216 u64 filter;
2217 u32 crc;
2218 struct cfg80211_bss *bss;
2219 int link_id;
2220 bool from_ap;
2221 };
2222
2223 struct ieee802_11_elems *
2224 ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params);
2225
2226 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)2227 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
2228 u64 filter, u32 crc,
2229 struct cfg80211_bss *bss)
2230 {
2231 struct ieee80211_elems_parse_params params = {
2232 .start = start,
2233 .len = len,
2234 .action = action,
2235 .filter = filter,
2236 .crc = crc,
2237 .bss = bss,
2238 .link_id = -1,
2239 };
2240
2241 return ieee802_11_parse_elems_full(¶ms);
2242 }
2243
2244 static inline struct ieee802_11_elems *
ieee802_11_parse_elems(const u8 * start,size_t len,bool action,struct cfg80211_bss * bss)2245 ieee802_11_parse_elems(const u8 *start, size_t len, bool action,
2246 struct cfg80211_bss *bss)
2247 {
2248 return ieee802_11_parse_elems_crc(start, len, action, 0, 0, bss);
2249 }
2250
2251 void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos);
2252
2253 extern const int ieee802_1d_to_ac[8];
2254
ieee80211_ac_from_tid(int tid)2255 static inline int ieee80211_ac_from_tid(int tid)
2256 {
2257 return ieee802_1d_to_ac[tid & 7];
2258 }
2259
2260 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
2261 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
2262 void ieee80211_dynamic_ps_timer(struct timer_list *t);
2263 void ieee80211_send_nullfunc(struct ieee80211_local *local,
2264 struct ieee80211_sub_if_data *sdata,
2265 bool powersave);
2266 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
2267 struct ieee80211_sub_if_data *sdata);
2268 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2269 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
2270
2271 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
2272 unsigned long queues,
2273 enum queue_stop_reason reason,
2274 bool refcounted);
2275 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
2276 struct ieee80211_sub_if_data *sdata,
2277 enum queue_stop_reason reason);
2278 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
2279 struct ieee80211_sub_if_data *sdata,
2280 enum queue_stop_reason reason);
2281 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
2282 unsigned long queues,
2283 enum queue_stop_reason reason,
2284 bool refcounted);
2285 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
2286 enum queue_stop_reason reason,
2287 bool refcounted);
2288 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
2289 enum queue_stop_reason reason,
2290 bool refcounted);
2291 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
2292 void ieee80211_add_pending_skb(struct ieee80211_local *local,
2293 struct sk_buff *skb);
2294 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
2295 struct sk_buff_head *skbs);
2296 void ieee80211_flush_queues(struct ieee80211_local *local,
2297 struct ieee80211_sub_if_data *sdata, bool drop);
2298 void __ieee80211_flush_queues(struct ieee80211_local *local,
2299 struct ieee80211_sub_if_data *sdata,
2300 unsigned int queues, bool drop);
2301
ieee80211_can_run_worker(struct ieee80211_local * local)2302 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2303 {
2304 /*
2305 * It's unsafe to try to do any work during reconfigure flow.
2306 * When the flow ends the work will be requeued.
2307 */
2308 if (local->in_reconfig)
2309 return false;
2310
2311 /*
2312 * If quiescing is set, we are racing with __ieee80211_suspend.
2313 * __ieee80211_suspend flushes the workers after setting quiescing,
2314 * and we check quiescing / suspended before enqueing new workers.
2315 * We should abort the worker to avoid the races below.
2316 */
2317 if (local->quiescing)
2318 return false;
2319
2320 /*
2321 * We might already be suspended if the following scenario occurs:
2322 * __ieee80211_suspend Control path
2323 *
2324 * if (local->quiescing)
2325 * return;
2326 * local->quiescing = true;
2327 * flush_workqueue();
2328 * queue_work(...);
2329 * local->suspended = true;
2330 * local->quiescing = false;
2331 * worker starts running...
2332 */
2333 if (local->suspended)
2334 return false;
2335
2336 return true;
2337 }
2338
2339 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2340 void ieee80211_txq_set_params(struct ieee80211_local *local);
2341 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2342 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2343 struct sta_info *sta,
2344 struct txq_info *txq, int tid);
2345 void ieee80211_txq_purge(struct ieee80211_local *local,
2346 struct txq_info *txqi);
2347 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2348 struct ieee80211_sub_if_data *sdata);
2349 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2350 struct txq_info *txqi);
2351 void ieee80211_wake_txqs(struct tasklet_struct *t);
2352 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2353 u16 transaction, u16 auth_alg, u16 status,
2354 const u8 *extra, size_t extra_len, const u8 *bssid,
2355 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2356 u32 tx_flags);
2357 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2358 const u8 *da, const u8 *bssid,
2359 u16 stype, u16 reason,
2360 bool send_frame, u8 *frame_buf);
2361
2362 enum {
2363 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
2364 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
2365 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
2366 };
2367
2368 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2369 size_t buffer_len,
2370 struct ieee80211_scan_ies *ie_desc,
2371 const u8 *ie, size_t ie_len,
2372 u8 bands_used, u32 *rate_masks,
2373 struct cfg80211_chan_def *chandef,
2374 u32 flags);
2375 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2376 const u8 *src, const u8 *dst,
2377 u32 ratemask,
2378 struct ieee80211_channel *chan,
2379 const u8 *ssid, size_t ssid_len,
2380 const u8 *ie, size_t ie_len,
2381 u32 flags);
2382 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2383 struct ieee802_11_elems *elems,
2384 enum nl80211_band band, u32 *basic_rates);
2385 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2386 struct ieee80211_link_data *link,
2387 enum ieee80211_smps_mode smps_mode);
2388 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata,
2389 struct ieee80211_link_data *link);
2390 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata,
2391 int link_id);
2392
2393 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2394 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2395 u16 cap);
2396 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2397 const struct cfg80211_chan_def *chandef,
2398 u16 prot_mode, bool rifs_mode);
2399 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2400 const struct cfg80211_chan_def *chandef);
2401 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2402 u32 cap);
2403 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2404 const struct cfg80211_chan_def *chandef);
2405 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2406 u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos,
2407 const struct ieee80211_sta_he_cap *he_cap,
2408 u8 *end);
2409 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2410 enum ieee80211_smps_mode smps_mode,
2411 struct sk_buff *skb);
2412 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef);
2413 int ieee80211_parse_bitrates(enum nl80211_chan_width width,
2414 const struct ieee80211_supported_band *sband,
2415 const u8 *srates, int srates_len, u32 *rates);
2416 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2417 struct sk_buff *skb, bool need_basic,
2418 enum nl80211_band band);
2419 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2420 struct sk_buff *skb, bool need_basic,
2421 enum nl80211_band band);
2422 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2423 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
2424 struct ieee80211_sta_s1g_cap *caps,
2425 struct sk_buff *skb);
2426 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
2427 struct sk_buff *skb);
2428
2429 /* channel management */
2430 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2431 struct cfg80211_chan_def *chandef);
2432 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
2433 const struct ieee80211_vht_operation *oper,
2434 const struct ieee80211_ht_operation *htop,
2435 struct cfg80211_chan_def *chandef);
2436 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation *eht_oper,
2437 bool support_160, bool support_320,
2438 struct cfg80211_chan_def *chandef);
2439 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
2440 const struct ieee80211_he_operation *he_oper,
2441 const struct ieee80211_eht_operation *eht_oper,
2442 struct cfg80211_chan_def *chandef);
2443 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
2444 struct cfg80211_chan_def *chandef);
2445 ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2446
2447 int __must_check
2448 ieee80211_link_use_channel(struct ieee80211_link_data *link,
2449 const struct cfg80211_chan_def *chandef,
2450 enum ieee80211_chanctx_mode mode);
2451 int __must_check
2452 ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link,
2453 const struct cfg80211_chan_def *chandef,
2454 enum ieee80211_chanctx_mode mode,
2455 bool radar_required);
2456 int __must_check
2457 ieee80211_link_use_reserved_context(struct ieee80211_link_data *link);
2458 int ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link);
2459
2460 int __must_check
2461 ieee80211_link_change_bandwidth(struct ieee80211_link_data *link,
2462 const struct cfg80211_chan_def *chandef,
2463 u32 *changed);
2464 void ieee80211_link_release_channel(struct ieee80211_link_data *link);
2465 void ieee80211_link_vlan_copy_chanctx(struct ieee80211_link_data *link);
2466 void ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link,
2467 bool clear);
2468 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2469 struct ieee80211_chanctx *ctx);
2470
2471 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2472 struct ieee80211_chanctx *chanctx);
2473 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2474 struct ieee80211_chanctx *ctx);
2475 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2476
2477 void ieee80211_dfs_cac_timer(unsigned long data);
2478 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2479 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2480 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2481 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2482 struct cfg80211_csa_settings *csa_settings);
2483
2484 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2485 struct ieee80211_sub_if_data *sdata);
2486 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2487 const struct cfg80211_chan_def *chandef,
2488 enum ieee80211_chanctx_mode chanmode,
2489 u8 radar_detect);
2490 int ieee80211_max_num_channels(struct ieee80211_local *local);
2491 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2492 struct ieee80211_chanctx *ctx);
2493
2494 /* TDLS */
2495 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2496 const u8 *peer, u8 action_code, u8 dialog_token,
2497 u16 status_code, u32 peer_capability,
2498 bool initiator, const u8 *extra_ies,
2499 size_t extra_ies_len);
2500 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2501 const u8 *peer, enum nl80211_tdls_operation oper);
2502 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2503 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2504 const u8 *addr, u8 oper_class,
2505 struct cfg80211_chan_def *chandef);
2506 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2507 struct net_device *dev,
2508 const u8 *addr);
2509 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2510 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2511 const u8 *peer, u16 reason);
2512 void
2513 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata,
2514 struct sk_buff *skb);
2515
2516
2517 const char *ieee80211_get_reason_code_string(u16 reason_code);
2518 u16 ieee80211_encode_usf(int val);
2519 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
2520 enum nl80211_iftype type);
2521
2522 extern const struct ethtool_ops ieee80211_ethtool_ops;
2523
2524 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw,
2525 struct ieee80211_vif *vif,
2526 struct ieee80211_sta *pubsta,
2527 int len, bool ampdu);
2528 #ifdef CONFIG_MAC80211_NOINLINE
2529 #define debug_noinline noinline
2530 #else
2531 #define debug_noinline
2532 #endif
2533
2534 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache);
2535 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache);
2536
2537 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2538 u8 *ieee80211_ie_build_eht_cap(u8 *pos,
2539 const struct ieee80211_sta_he_cap *he_cap,
2540 const struct ieee80211_sta_eht_cap *eht_cap,
2541 u8 *end,
2542 bool for_ap);
2543
2544 void
2545 ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata,
2546 struct ieee80211_supported_band *sband,
2547 const u8 *he_cap_ie, u8 he_cap_len,
2548 const struct ieee80211_eht_cap_elem *eht_cap_ie_elem,
2549 u8 eht_cap_len,
2550 struct link_sta_info *link_sta);
2551 #endif /* IEEE80211_I_H */
2552
