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 #include "drop.h"
37
38 extern const struct cfg80211_ops mac80211_config_ops;
39
40 struct ieee80211_local;
41 struct ieee80211_mesh_fast_tx;
42
43 /* Maximum number of broadcast/multicast frames to buffer when some of the
44 * associated stations are using power saving. */
45 #define AP_MAX_BC_BUFFER 128
46
47 /* Maximum number of frames buffered to all STAs, including multicast frames.
48 * Note: increasing this limit increases the potential memory requirement. Each
49 * frame can be up to about 2 kB long. */
50 #define TOTAL_MAX_TX_BUFFER 512
51
52 /* Required encryption head and tailroom */
53 #define IEEE80211_ENCRYPT_HEADROOM 8
54 #define IEEE80211_ENCRYPT_TAILROOM 18
55
56 /* power level hasn't been configured (or set to automatic) */
57 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
58
59 /*
60 * Some APs experience problems when working with U-APSD. Decreasing the
61 * probability of that happening by using legacy mode for all ACs but VO isn't
62 * enough.
63 *
64 * Cisco 4410N originally forced us to enable VO by default only because it
65 * treated non-VO ACs as legacy.
66 *
67 * However some APs (notably Netgear R7000) silently reclassify packets to
68 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
69 * clients would never see some frames (e.g. ARP responses) or would fetch them
70 * accidentally after a long time.
71 *
72 * It makes little sense to enable u-APSD queues by default because it needs
73 * userspace applications to be aware of it to actually take advantage of the
74 * possible additional powersavings. Implicitly depending on driver autotrigger
75 * frame support doesn't make much sense.
76 */
77 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
78
79 #define IEEE80211_DEFAULT_MAX_SP_LEN \
80 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
81
82 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS];
83
84 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
85
86 #define IEEE80211_MAX_NAN_INSTANCE_ID 255
87
88
89 /*
90 * Keep a station's queues on the active list for deficit accounting purposes
91 * if it was active or queued during the last 100ms
92 */
93 #define AIRTIME_ACTIVE_DURATION (HZ / 10)
94
95 struct ieee80211_bss {
96 u32 device_ts_beacon, device_ts_presp;
97
98 bool wmm_used;
99 bool uapsd_supported;
100
101 #define IEEE80211_MAX_SUPP_RATES 32
102 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
103 size_t supp_rates_len;
104 struct ieee80211_rate *beacon_rate;
105
106 u32 vht_cap_info;
107
108 /*
109 * During association, we save an ERP value from a probe response so
110 * that we can feed ERP info to the driver when handling the
111 * association completes. these fields probably won't be up-to-date
112 * otherwise, you probably don't want to use them.
113 */
114 bool has_erp_value;
115 u8 erp_value;
116
117 /* Keep track of the corruption of the last beacon/probe response. */
118 u8 corrupt_data;
119
120 /* Keep track of what bits of information we have valid info for. */
121 u8 valid_data;
122 };
123
124 /**
125 * enum ieee80211_bss_corrupt_data_flags - BSS data corruption flags
126 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
127 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
128 *
129 * These are bss flags that are attached to a bss in the
130 * @corrupt_data field of &struct ieee80211_bss.
131 */
132 enum ieee80211_bss_corrupt_data_flags {
133 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
134 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
135 };
136
137 /**
138 * enum ieee80211_bss_valid_data_flags - BSS valid data flags
139 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
140 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
141 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
142 *
143 * These are bss flags that are attached to a bss in the
144 * @valid_data field of &struct ieee80211_bss. They show which parts
145 * of the data structure were received as a result of an un-corrupted
146 * beacon/probe response.
147 */
148 enum ieee80211_bss_valid_data_flags {
149 IEEE80211_BSS_VALID_WMM = BIT(1),
150 IEEE80211_BSS_VALID_RATES = BIT(2),
151 IEEE80211_BSS_VALID_ERP = BIT(3)
152 };
153
154 typedef unsigned __bitwise ieee80211_tx_result;
155 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
156 #define TX_DROP ((__force ieee80211_tx_result) 1u)
157 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
158
159 #define IEEE80211_TX_UNICAST BIT(1)
160 #define IEEE80211_TX_PS_BUFFERED BIT(2)
161
162 struct ieee80211_tx_data {
163 struct sk_buff *skb;
164 struct sk_buff_head skbs;
165 struct ieee80211_local *local;
166 struct ieee80211_sub_if_data *sdata;
167 struct sta_info *sta;
168 struct ieee80211_key *key;
169 struct ieee80211_tx_rate rate;
170
171 unsigned int flags;
172 };
173
174 /**
175 * enum ieee80211_packet_rx_flags - packet RX flags
176 * @IEEE80211_RX_AMSDU: a-MSDU packet
177 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
178 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
179 *
180 * These are per-frame flags that are attached to a frame in the
181 * @rx_flags field of &struct ieee80211_rx_status.
182 */
183 enum ieee80211_packet_rx_flags {
184 IEEE80211_RX_AMSDU = BIT(3),
185 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
186 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
187 };
188
189 /**
190 * enum ieee80211_rx_flags - RX data flags
191 *
192 * @IEEE80211_RX_CMNTR: received on cooked monitor already
193 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
194 * to cfg80211_report_obss_beacon().
195 *
196 * These flags are used across handling multiple interfaces
197 * for a single frame.
198 */
199 enum ieee80211_rx_flags {
200 IEEE80211_RX_CMNTR = BIT(0),
201 IEEE80211_RX_BEACON_REPORTED = BIT(1),
202 };
203
204 struct ieee80211_rx_data {
205 struct list_head *list;
206 struct sk_buff *skb;
207 struct ieee80211_local *local;
208 struct ieee80211_sub_if_data *sdata;
209 struct ieee80211_link_data *link;
210 struct sta_info *sta;
211 struct link_sta_info *link_sta;
212 struct ieee80211_key *key;
213
214 unsigned int flags;
215
216 /*
217 * Index into sequence numbers array, 0..16
218 * since the last (16) is used for non-QoS,
219 * will be 16 on non-QoS frames.
220 */
221 int seqno_idx;
222
223 /*
224 * Index into the security IV/PN arrays, 0..16
225 * since the last (16) is used for CCMP-encrypted
226 * management frames, will be set to 16 on mgmt
227 * frames and 0 on non-QoS frames.
228 */
229 int security_idx;
230
231 int link_id;
232
233 union {
234 struct {
235 u32 iv32;
236 u16 iv16;
237 } tkip;
238 struct {
239 u8 pn[IEEE80211_CCMP_PN_LEN];
240 } ccm_gcm;
241 };
242 };
243
244 struct ieee80211_csa_settings {
245 const u16 *counter_offsets_beacon;
246 const u16 *counter_offsets_presp;
247
248 int n_counter_offsets_beacon;
249 int n_counter_offsets_presp;
250
251 u8 count;
252 };
253
254 struct ieee80211_color_change_settings {
255 u16 counter_offset_beacon;
256 u16 counter_offset_presp;
257 u8 count;
258 };
259
260 struct beacon_data {
261 u8 *head, *tail;
262 int head_len, tail_len;
263 struct ieee80211_meshconf_ie *meshconf;
264 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
265 u8 cntdwn_current_counter;
266 struct cfg80211_mbssid_elems *mbssid_ies;
267 struct cfg80211_rnr_elems *rnr_ies;
268 struct rcu_head rcu_head;
269 };
270
271 struct probe_resp {
272 struct rcu_head rcu_head;
273 int len;
274 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
275 u8 data[];
276 };
277
278 struct fils_discovery_data {
279 struct rcu_head rcu_head;
280 int len;
281 u8 data[];
282 };
283
284 struct unsol_bcast_probe_resp_data {
285 struct rcu_head rcu_head;
286 int len;
287 u8 data[];
288 };
289
290 struct ps_data {
291 /* yes, this looks ugly, but guarantees that we can later use
292 * bitmap_empty :)
293 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
294 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
295 __aligned(__alignof__(unsigned long));
296 struct sk_buff_head bc_buf;
297 atomic_t num_sta_ps; /* number of stations in PS mode */
298 int dtim_count;
299 bool dtim_bc_mc;
300 };
301
302 struct ieee80211_if_ap {
303 struct list_head vlans; /* write-protected with RTNL and local->mtx */
304
305 struct ps_data ps;
306 atomic_t num_mcast_sta; /* number of stations receiving multicast */
307
308 bool multicast_to_unicast;
309 bool active;
310 };
311
312 struct ieee80211_if_vlan {
313 struct list_head list; /* write-protected with RTNL and local->mtx */
314
315 /* used for all tx if the VLAN is configured to 4-addr mode */
316 struct sta_info __rcu *sta;
317 atomic_t num_mcast_sta; /* number of stations receiving multicast */
318 };
319
320 struct mesh_stats {
321 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
322 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
323 __u32 fwded_frames; /* Mesh total forwarded frames */
324 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
325 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
326 };
327
328 #define PREQ_Q_F_START 0x1
329 #define PREQ_Q_F_REFRESH 0x2
330 struct mesh_preq_queue {
331 struct list_head list;
332 u8 dst[ETH_ALEN];
333 u8 flags;
334 };
335
336 struct ieee80211_roc_work {
337 struct list_head list;
338
339 struct ieee80211_sub_if_data *sdata;
340
341 struct ieee80211_channel *chan;
342
343 bool started, abort, hw_begun, notified;
344 bool on_channel;
345
346 unsigned long start_time;
347
348 u32 duration, req_duration;
349 struct sk_buff *frame;
350 u64 cookie, mgmt_tx_cookie;
351 enum ieee80211_roc_type type;
352 };
353
354 /* flags used in struct ieee80211_if_managed.flags */
355 enum ieee80211_sta_flags {
356 IEEE80211_STA_CONNECTION_POLL = BIT(1),
357 IEEE80211_STA_CONTROL_PORT = BIT(2),
358 IEEE80211_STA_MFP_ENABLED = BIT(6),
359 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
360 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
361 IEEE80211_STA_ENABLE_RRM = BIT(15),
362 };
363
364 typedef u32 __bitwise ieee80211_conn_flags_t;
365
366 enum ieee80211_conn_flags {
367 IEEE80211_CONN_DISABLE_HT = (__force ieee80211_conn_flags_t)BIT(0),
368 IEEE80211_CONN_DISABLE_40MHZ = (__force ieee80211_conn_flags_t)BIT(1),
369 IEEE80211_CONN_DISABLE_VHT = (__force ieee80211_conn_flags_t)BIT(2),
370 IEEE80211_CONN_DISABLE_80P80MHZ = (__force ieee80211_conn_flags_t)BIT(3),
371 IEEE80211_CONN_DISABLE_160MHZ = (__force ieee80211_conn_flags_t)BIT(4),
372 IEEE80211_CONN_DISABLE_HE = (__force ieee80211_conn_flags_t)BIT(5),
373 IEEE80211_CONN_DISABLE_EHT = (__force ieee80211_conn_flags_t)BIT(6),
374 IEEE80211_CONN_DISABLE_320MHZ = (__force ieee80211_conn_flags_t)BIT(7),
375 };
376
377 struct ieee80211_mgd_auth_data {
378 struct cfg80211_bss *bss;
379 unsigned long timeout;
380 int tries;
381 u16 algorithm, expected_transaction;
382
383 u8 key[WLAN_KEY_LEN_WEP104];
384 u8 key_len, key_idx;
385 bool done, waiting;
386 bool peer_confirmed;
387 bool timeout_started;
388 int link_id;
389
390 u8 ap_addr[ETH_ALEN] __aligned(2);
391
392 u16 sae_trans, sae_status;
393 size_t data_len;
394 u8 data[];
395 };
396
397 struct ieee80211_mgd_assoc_data {
398 struct {
399 struct cfg80211_bss *bss;
400
401 u8 addr[ETH_ALEN] __aligned(2);
402
403 u8 ap_ht_param;
404
405 struct ieee80211_vht_cap ap_vht_cap;
406
407 size_t elems_len;
408 u8 *elems; /* pointing to inside ie[] below */
409
410 ieee80211_conn_flags_t conn_flags;
411
412 u16 status;
413
414 bool disabled;
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 wiphy_work beacon_connection_loss_work;
472 struct wiphy_work 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 struct wiphy_delayed_work ml_reconf_work;
556 u16 removed_links;
557 };
558
559 struct ieee80211_if_ibss {
560 struct timer_list timer;
561 struct wiphy_work csa_connection_drop_work;
562
563 unsigned long last_scan_completed;
564
565 u32 basic_rates;
566
567 bool fixed_bssid;
568 bool fixed_channel;
569 bool privacy;
570
571 bool control_port;
572 bool userspace_handles_dfs;
573
574 u8 bssid[ETH_ALEN] __aligned(2);
575 u8 ssid[IEEE80211_MAX_SSID_LEN];
576 u8 ssid_len, ie_len;
577 u8 *ie;
578 struct cfg80211_chan_def chandef;
579
580 unsigned long ibss_join_req;
581 /* probe response/beacon for IBSS */
582 struct beacon_data __rcu *presp;
583
584 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
585 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
586
587 spinlock_t incomplete_lock;
588 struct list_head incomplete_stations;
589
590 enum {
591 IEEE80211_IBSS_MLME_SEARCH,
592 IEEE80211_IBSS_MLME_JOINED,
593 } state;
594 };
595
596 /**
597 * struct ieee80211_if_ocb - OCB mode state
598 *
599 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
600 * @wrkq_flags: OCB deferred task action
601 * @incomplete_lock: delayed STA insertion lock
602 * @incomplete_stations: list of STAs waiting for delayed insertion
603 * @joined: indication if the interface is connected to an OCB network
604 */
605 struct ieee80211_if_ocb {
606 struct timer_list housekeeping_timer;
607 unsigned long wrkq_flags;
608
609 spinlock_t incomplete_lock;
610 struct list_head incomplete_stations;
611
612 bool joined;
613 };
614
615 /**
616 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
617 *
618 * these declarations define the interface, which enables
619 * vendor-specific mesh synchronization
620 *
621 */
622 struct ieee802_11_elems;
623 struct ieee80211_mesh_sync_ops {
624 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, u16 stype,
625 struct ieee80211_mgmt *mgmt, unsigned int len,
626 const struct ieee80211_meshconf_ie *mesh_cfg,
627 struct ieee80211_rx_status *rx_status);
628
629 /* should be called with beacon_data under RCU read lock */
630 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
631 struct beacon_data *beacon);
632 /* add other framework functions here */
633 };
634
635 struct mesh_csa_settings {
636 struct rcu_head rcu_head;
637 struct cfg80211_csa_settings settings;
638 };
639
640 /**
641 * struct mesh_table
642 *
643 * @known_gates: list of known mesh gates and their mpaths by the station. The
644 * gate's mpath may or may not be resolved and active.
645 * @gates_lock: protects updates to known_gates
646 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr
647 * @walk_head: linked list containing all mesh_path objects
648 * @walk_lock: lock protecting walk_head
649 * @entries: number of entries in the table
650 */
651 struct mesh_table {
652 struct hlist_head known_gates;
653 spinlock_t gates_lock;
654 struct rhashtable rhead;
655 struct hlist_head walk_head;
656 spinlock_t walk_lock;
657 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */
658 };
659
660 /**
661 * struct mesh_tx_cache - mesh fast xmit header cache
662 *
663 * @rht: hash table containing struct ieee80211_mesh_fast_tx, using skb DA as key
664 * @walk_head: linked list containing all ieee80211_mesh_fast_tx objects
665 * @walk_lock: lock protecting walk_head and rht
666 */
667 struct mesh_tx_cache {
668 struct rhashtable rht;
669 struct hlist_head walk_head;
670 spinlock_t walk_lock;
671 };
672
673 struct ieee80211_if_mesh {
674 struct timer_list housekeeping_timer;
675 struct timer_list mesh_path_timer;
676 struct timer_list mesh_path_root_timer;
677
678 unsigned long wrkq_flags;
679 unsigned long mbss_changed[64 / BITS_PER_LONG];
680
681 bool userspace_handles_dfs;
682
683 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
684 size_t mesh_id_len;
685 /* Active Path Selection Protocol Identifier */
686 u8 mesh_pp_id;
687 /* Active Path Selection Metric Identifier */
688 u8 mesh_pm_id;
689 /* Congestion Control Mode Identifier */
690 u8 mesh_cc_id;
691 /* Synchronization Protocol Identifier */
692 u8 mesh_sp_id;
693 /* Authentication Protocol Identifier */
694 u8 mesh_auth_id;
695 /* Local mesh Sequence Number */
696 u32 sn;
697 /* Last used PREQ ID */
698 u32 preq_id;
699 atomic_t mpaths;
700 /* Timestamp of last SN update */
701 unsigned long last_sn_update;
702 /* Time when it's ok to send next PERR */
703 unsigned long next_perr;
704 /* Timestamp of last PREQ sent */
705 unsigned long last_preq;
706 struct mesh_rmc *rmc;
707 spinlock_t mesh_preq_queue_lock;
708 struct mesh_preq_queue preq_queue;
709 int preq_queue_len;
710 struct mesh_stats mshstats;
711 struct mesh_config mshcfg;
712 atomic_t estab_plinks;
713 atomic_t mesh_seqnum;
714 bool accepting_plinks;
715 int num_gates;
716 struct beacon_data __rcu *beacon;
717 const u8 *ie;
718 u8 ie_len;
719 enum {
720 IEEE80211_MESH_SEC_NONE = 0x0,
721 IEEE80211_MESH_SEC_AUTHED = 0x1,
722 IEEE80211_MESH_SEC_SECURED = 0x2,
723 } security;
724 bool user_mpm;
725 /* Extensible Synchronization Framework */
726 const struct ieee80211_mesh_sync_ops *sync_ops;
727 s64 sync_offset_clockdrift_max;
728 spinlock_t sync_offset_lock;
729 /* mesh power save */
730 enum nl80211_mesh_power_mode nonpeer_pm;
731 int ps_peers_light_sleep;
732 int ps_peers_deep_sleep;
733 struct ps_data ps;
734 /* Channel Switching Support */
735 struct mesh_csa_settings __rcu *csa;
736 enum {
737 IEEE80211_MESH_CSA_ROLE_NONE,
738 IEEE80211_MESH_CSA_ROLE_INIT,
739 IEEE80211_MESH_CSA_ROLE_REPEATER,
740 } csa_role;
741 u8 chsw_ttl;
742 u16 pre_value;
743
744 /* offset from skb->data while building IE */
745 int meshconf_offset;
746
747 struct mesh_table mesh_paths;
748 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */
749 int mesh_paths_generation;
750 int mpp_paths_generation;
751 struct mesh_tx_cache tx_cache;
752 };
753
754 #ifdef CONFIG_MAC80211_MESH
755 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
756 do { (msh)->mshstats.name++; } while (0)
757 #else
758 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
759 do { } while (0)
760 #endif
761
762 /**
763 * enum ieee80211_sub_if_data_flags - virtual interface flags
764 *
765 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
766 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
767 * associated stations and deliver multicast frames both
768 * back to wireless media and to the local net stack.
769 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
770 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
771 * @IEEE80211_SDATA_DISCONNECT_HW_RESTART: Disconnect after hardware restart
772 * recovery
773 */
774 enum ieee80211_sub_if_data_flags {
775 IEEE80211_SDATA_ALLMULTI = BIT(0),
776 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
777 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
778 IEEE80211_SDATA_IN_DRIVER = BIT(5),
779 IEEE80211_SDATA_DISCONNECT_HW_RESTART = BIT(6),
780 };
781
782 /**
783 * enum ieee80211_sdata_state_bits - virtual interface state bits
784 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
785 * mirrors netif_running() but is separate for interface type
786 * change handling while the interface is up
787 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
788 * mode, so queues are stopped
789 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
790 * to offchannel, reset when offchannel returns
791 */
792 enum ieee80211_sdata_state_bits {
793 SDATA_STATE_RUNNING,
794 SDATA_STATE_OFFCHANNEL,
795 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
796 };
797
798 /**
799 * enum ieee80211_chanctx_mode - channel context configuration mode
800 *
801 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
802 * multiple interfaces
803 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
804 * only by a single interface. This can be used for example for
805 * non-fixed channel IBSS.
806 */
807 enum ieee80211_chanctx_mode {
808 IEEE80211_CHANCTX_SHARED,
809 IEEE80211_CHANCTX_EXCLUSIVE
810 };
811
812 /**
813 * enum ieee80211_chanctx_replace_state - channel context replacement state
814 *
815 * This is used for channel context in-place reservations that require channel
816 * context switch/swap.
817 *
818 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
819 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
820 * by a (not yet registered) channel context pointed by %replace_ctx.
821 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
822 * replaces an existing channel context pointed to by %replace_ctx.
823 */
824 enum ieee80211_chanctx_replace_state {
825 IEEE80211_CHANCTX_REPLACE_NONE,
826 IEEE80211_CHANCTX_WILL_BE_REPLACED,
827 IEEE80211_CHANCTX_REPLACES_OTHER,
828 };
829
830 struct ieee80211_chanctx {
831 struct list_head list;
832 struct rcu_head rcu_head;
833
834 struct list_head assigned_links;
835 struct list_head reserved_links;
836
837 enum ieee80211_chanctx_replace_state replace_state;
838 struct ieee80211_chanctx *replace_ctx;
839
840 enum ieee80211_chanctx_mode mode;
841 bool driver_present;
842
843 struct ieee80211_chanctx_conf conf;
844 };
845
846 struct mac80211_qos_map {
847 struct cfg80211_qos_map qos_map;
848 struct rcu_head rcu_head;
849 };
850
851 enum txq_info_flags {
852 IEEE80211_TXQ_STOP,
853 IEEE80211_TXQ_AMPDU,
854 IEEE80211_TXQ_NO_AMSDU,
855 IEEE80211_TXQ_DIRTY,
856 };
857
858 /**
859 * struct txq_info - per tid queue
860 *
861 * @tin: contains packets split into multiple flows
862 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
863 * a fq_flow which is already owned by a different tin
864 * @def_cvars: codel vars for @def_flow
865 * @frags: used to keep fragments created after dequeue
866 * @schedule_order: used with ieee80211_local->active_txqs
867 * @schedule_round: counter to prevent infinite loops on TXQ scheduling
868 */
869 struct txq_info {
870 struct fq_tin tin;
871 struct codel_vars def_cvars;
872 struct codel_stats cstats;
873
874 u16 schedule_round;
875 struct list_head schedule_order;
876
877 struct sk_buff_head frags;
878
879 unsigned long flags;
880
881 /* keep last! */
882 struct ieee80211_txq txq;
883 };
884
885 struct ieee80211_if_mntr {
886 u32 flags;
887 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
888
889 struct list_head list;
890 };
891
892 /**
893 * struct ieee80211_if_nan - NAN state
894 *
895 * @conf: current NAN configuration
896 * @func_ids: a bitmap of available instance_id's
897 */
898 struct ieee80211_if_nan {
899 struct cfg80211_nan_conf conf;
900
901 /* protects function_inst_ids */
902 spinlock_t func_lock;
903 struct idr function_inst_ids;
904 };
905
906 struct ieee80211_link_data_managed {
907 u8 bssid[ETH_ALEN] __aligned(2);
908
909 u8 dtim_period;
910 enum ieee80211_smps_mode req_smps, /* requested smps mode */
911 driver_smps_mode; /* smps mode request */
912
913 ieee80211_conn_flags_t conn_flags;
914
915 s16 p2p_noa_index;
916
917 bool tdls_chan_switch_prohibited;
918
919 bool have_beacon;
920 bool tracking_signal_avg;
921 bool disable_wmm_tracking;
922 bool operating_11g_mode;
923
924 bool csa_waiting_bcn;
925 bool csa_ignored_same_chan;
926 struct wiphy_delayed_work chswitch_work;
927
928 struct wiphy_work request_smps_work;
929 bool beacon_crc_valid;
930 u32 beacon_crc;
931 struct ewma_beacon_signal ave_beacon_signal;
932 int last_ave_beacon_signal;
933
934 /*
935 * Number of Beacon frames used in ave_beacon_signal. This can be used
936 * to avoid generating less reliable cqm events that would be based
937 * only on couple of received frames.
938 */
939 unsigned int count_beacon_signal;
940
941 /* Number of times beacon loss was invoked. */
942 unsigned int beacon_loss_count;
943
944 /*
945 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
946 * that triggered a cqm event. 0 indicates that no event has been
947 * generated for the current association.
948 */
949 int last_cqm_event_signal;
950
951 int wmm_last_param_set;
952 int mu_edca_last_param_set;
953
954 u8 bss_param_ch_cnt;
955
956 struct cfg80211_bss *bss;
957 };
958
959 struct ieee80211_link_data_ap {
960 struct beacon_data __rcu *beacon;
961 struct probe_resp __rcu *probe_resp;
962 struct fils_discovery_data __rcu *fils_discovery;
963 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp;
964
965 /* to be used after channel switch. */
966 struct cfg80211_beacon_data *next_beacon;
967 };
968
969 struct ieee80211_link_data {
970 struct ieee80211_sub_if_data *sdata;
971 unsigned int link_id;
972
973 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
974 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
975
976 /* multicast keys only */
977 struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS +
978 NUM_DEFAULT_MGMT_KEYS +
979 NUM_DEFAULT_BEACON_KEYS];
980 struct ieee80211_key __rcu *default_multicast_key;
981 struct ieee80211_key __rcu *default_mgmt_key;
982 struct ieee80211_key __rcu *default_beacon_key;
983
984 struct work_struct csa_finalize_work;
985 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
986
987 bool operating_11g_mode;
988
989 struct cfg80211_chan_def csa_chandef;
990
991 struct work_struct color_change_finalize_work;
992 struct delayed_work color_collision_detect_work;
993 u64 color_bitmap;
994
995 /* context reservation -- protected with chanctx_mtx */
996 struct ieee80211_chanctx *reserved_chanctx;
997 struct cfg80211_chan_def reserved_chandef;
998 bool reserved_radar_required;
999 bool reserved_ready;
1000
1001 u8 needed_rx_chains;
1002 enum ieee80211_smps_mode smps_mode;
1003
1004 int user_power_level; /* in dBm */
1005 int ap_power_level; /* in dBm */
1006
1007 bool radar_required;
1008 struct delayed_work dfs_cac_timer_work;
1009
1010 union {
1011 struct ieee80211_link_data_managed mgd;
1012 struct ieee80211_link_data_ap ap;
1013 } u;
1014
1015 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
1016
1017 struct ieee80211_bss_conf *conf;
1018
1019 #ifdef CONFIG_MAC80211_DEBUGFS
1020 struct dentry *debugfs_dir;
1021 #endif
1022 };
1023
1024 struct ieee80211_sub_if_data {
1025 struct list_head list;
1026
1027 struct wireless_dev wdev;
1028
1029 /* keys */
1030 struct list_head key_list;
1031
1032 /* count for keys needing tailroom space allocation */
1033 int crypto_tx_tailroom_needed_cnt;
1034 int crypto_tx_tailroom_pending_dec;
1035 struct delayed_work dec_tailroom_needed_wk;
1036
1037 struct net_device *dev;
1038 struct ieee80211_local *local;
1039
1040 unsigned int flags;
1041
1042 unsigned long state;
1043
1044 char name[IFNAMSIZ];
1045
1046 struct ieee80211_fragment_cache frags;
1047
1048 /* TID bitmap for NoAck policy */
1049 u16 noack_map;
1050
1051 /* bit field of ACM bits (BIT(802.1D tag)) */
1052 u8 wmm_acm;
1053
1054 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS];
1055 struct ieee80211_key __rcu *default_unicast_key;
1056
1057 u16 sequence_number;
1058 u16 mld_mcast_seq;
1059 __be16 control_port_protocol;
1060 bool control_port_no_encrypt;
1061 bool control_port_no_preauth;
1062 bool control_port_over_nl80211;
1063
1064 atomic_t num_tx_queued;
1065 struct mac80211_qos_map __rcu *qos_map;
1066
1067 /* used to reconfigure hardware SM PS */
1068 struct work_struct recalc_smps;
1069
1070 struct wiphy_work work;
1071 struct sk_buff_head skb_queue;
1072 struct sk_buff_head status_queue;
1073
1074 /*
1075 * AP this belongs to: self in AP mode and
1076 * corresponding AP in VLAN mode, NULL for
1077 * all others (might be needed later in IBSS)
1078 */
1079 struct ieee80211_if_ap *bss;
1080
1081 /* bitmap of allowed (non-MCS) rate indexes for rate control */
1082 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
1083
1084 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
1085 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
1086
1087 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
1088 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
1089
1090 /* Beacon frame (non-MCS) rate (as a bitmap) */
1091 u32 beacon_rateidx_mask[NUM_NL80211_BANDS];
1092 bool beacon_rate_set;
1093
1094 union {
1095 struct ieee80211_if_ap ap;
1096 struct ieee80211_if_vlan vlan;
1097 struct ieee80211_if_managed mgd;
1098 struct ieee80211_if_ibss ibss;
1099 struct ieee80211_if_mesh mesh;
1100 struct ieee80211_if_ocb ocb;
1101 struct ieee80211_if_mntr mntr;
1102 struct ieee80211_if_nan nan;
1103 } u;
1104
1105 struct ieee80211_link_data deflink;
1106 struct ieee80211_link_data __rcu *link[IEEE80211_MLD_MAX_NUM_LINKS];
1107
1108 /* for ieee80211_set_active_links_async() */
1109 struct work_struct activate_links_work;
1110 u16 desired_active_links;
1111
1112 #ifdef CONFIG_MAC80211_DEBUGFS
1113 struct {
1114 struct dentry *subdir_stations;
1115 struct dentry *default_unicast_key;
1116 struct dentry *default_multicast_key;
1117 struct dentry *default_mgmt_key;
1118 struct dentry *default_beacon_key;
1119 } debugfs;
1120 #endif
1121
1122 /* must be last, dynamically sized area in this! */
1123 struct ieee80211_vif vif;
1124 };
1125
1126 static inline
vif_to_sdata(struct ieee80211_vif * p)1127 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
1128 {
1129 return container_of(p, struct ieee80211_sub_if_data, vif);
1130 }
1131
sdata_lock(struct ieee80211_sub_if_data * sdata)1132 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
1133 __acquires(&sdata->wdev.mtx)
1134 {
1135 mutex_lock(&sdata->wdev.mtx);
1136 __acquire(&sdata->wdev.mtx);
1137 }
1138
sdata_unlock(struct ieee80211_sub_if_data * sdata)1139 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
1140 __releases(&sdata->wdev.mtx)
1141 {
1142 mutex_unlock(&sdata->wdev.mtx);
1143 __release(&sdata->wdev.mtx);
1144 }
1145
1146 #define sdata_dereference(p, sdata) \
1147 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
1148
1149 static inline void
sdata_assert_lock(struct ieee80211_sub_if_data * sdata)1150 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
1151 {
1152 lockdep_assert_held(&sdata->wdev.mtx);
1153 }
1154
1155 static inline int
ieee80211_chanwidth_get_shift(enum nl80211_chan_width width)1156 ieee80211_chanwidth_get_shift(enum nl80211_chan_width width)
1157 {
1158 switch (width) {
1159 case NL80211_CHAN_WIDTH_5:
1160 return 2;
1161 case NL80211_CHAN_WIDTH_10:
1162 return 1;
1163 default:
1164 return 0;
1165 }
1166 }
1167
1168 static inline int
ieee80211_chandef_get_shift(struct cfg80211_chan_def * chandef)1169 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1170 {
1171 return ieee80211_chanwidth_get_shift(chandef->width);
1172 }
1173
1174 static inline int
ieee80211_vif_get_shift(struct ieee80211_vif * vif)1175 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1176 {
1177 struct ieee80211_chanctx_conf *chanctx_conf;
1178 int shift = 0;
1179
1180 rcu_read_lock();
1181 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf);
1182 if (chanctx_conf)
1183 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1184 rcu_read_unlock();
1185
1186 return shift;
1187 }
1188
1189 static inline int
ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems * elems,struct cfg80211_rnr_elems * rnr_elems,u8 i)1190 ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems,
1191 struct cfg80211_rnr_elems *rnr_elems,
1192 u8 i)
1193 {
1194 int len = 0;
1195
1196 if (!elems || !elems->cnt || i > elems->cnt)
1197 return 0;
1198
1199 if (i < elems->cnt) {
1200 len = elems->elem[i].len;
1201 if (rnr_elems) {
1202 len += rnr_elems->elem[i].len;
1203 for (i = elems->cnt; i < rnr_elems->cnt; i++)
1204 len += rnr_elems->elem[i].len;
1205 }
1206 return len;
1207 }
1208
1209 /* i == elems->cnt, calculate total length of all MBSSID elements */
1210 for (i = 0; i < elems->cnt; i++)
1211 len += elems->elem[i].len;
1212
1213 if (rnr_elems) {
1214 for (i = 0; i < rnr_elems->cnt; i++)
1215 len += rnr_elems->elem[i].len;
1216 }
1217
1218 return len;
1219 }
1220
1221 enum {
1222 IEEE80211_RX_MSG = 1,
1223 IEEE80211_TX_STATUS_MSG = 2,
1224 };
1225
1226 enum queue_stop_reason {
1227 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1228 IEEE80211_QUEUE_STOP_REASON_PS,
1229 IEEE80211_QUEUE_STOP_REASON_CSA,
1230 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1231 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1232 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1233 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1234 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1235 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1236 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1237 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE,
1238
1239 IEEE80211_QUEUE_STOP_REASONS,
1240 };
1241
1242 #ifdef CONFIG_MAC80211_LEDS
1243 struct tpt_led_trigger {
1244 char name[32];
1245 const struct ieee80211_tpt_blink *blink_table;
1246 unsigned int blink_table_len;
1247 struct timer_list timer;
1248 struct ieee80211_local *local;
1249 unsigned long prev_traffic;
1250 unsigned long tx_bytes, rx_bytes;
1251 unsigned int active, want;
1252 bool running;
1253 };
1254 #endif
1255
1256 /**
1257 * mac80211 scan flags - currently active scan mode
1258 *
1259 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1260 * well be on the operating channel
1261 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1262 * determine if we are on the operating channel or not
1263 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1264 * channel. This should not interrupt normal traffic.
1265 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1266 * that the scan completed.
1267 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1268 * a scan complete for an aborted scan.
1269 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1270 * cancelled.
1271 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR
1272 * and could send a probe request after receiving a beacon.
1273 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request
1274 */
1275 enum {
1276 SCAN_SW_SCANNING,
1277 SCAN_HW_SCANNING,
1278 SCAN_ONCHANNEL_SCANNING,
1279 SCAN_COMPLETED,
1280 SCAN_ABORTED,
1281 SCAN_HW_CANCELLED,
1282 SCAN_BEACON_WAIT,
1283 SCAN_BEACON_DONE,
1284 };
1285
1286 /**
1287 * enum mac80211_scan_state - scan state machine states
1288 *
1289 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1290 * determines if we should keep on scanning or switch back to the
1291 * operating channel
1292 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1293 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1294 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1295 * send out data
1296 * @SCAN_RESUME: Resume the scan and scan the next channel
1297 * @SCAN_ABORT: Abort the scan and go back to operating channel
1298 */
1299 enum mac80211_scan_state {
1300 SCAN_DECISION,
1301 SCAN_SET_CHANNEL,
1302 SCAN_SEND_PROBE,
1303 SCAN_SUSPEND,
1304 SCAN_RESUME,
1305 SCAN_ABORT,
1306 };
1307
1308 DECLARE_STATIC_KEY_FALSE(aql_disable);
1309
1310 struct ieee80211_local {
1311 /* embed the driver visible part.
1312 * don't cast (use the static inlines below), but we keep
1313 * it first anyway so they become a no-op */
1314 struct ieee80211_hw hw;
1315
1316 struct fq fq;
1317 struct codel_vars *cvars;
1318 struct codel_params cparams;
1319
1320 /* protects active_txqs and txqi->schedule_order */
1321 spinlock_t active_txq_lock[IEEE80211_NUM_ACS];
1322 struct list_head active_txqs[IEEE80211_NUM_ACS];
1323 u16 schedule_round[IEEE80211_NUM_ACS];
1324
1325 /* serializes ieee80211_handle_wake_tx_queue */
1326 spinlock_t handle_wake_tx_queue_lock;
1327
1328 u16 airtime_flags;
1329 u32 aql_txq_limit_low[IEEE80211_NUM_ACS];
1330 u32 aql_txq_limit_high[IEEE80211_NUM_ACS];
1331 u32 aql_threshold;
1332 atomic_t aql_total_pending_airtime;
1333 atomic_t aql_ac_pending_airtime[IEEE80211_NUM_ACS];
1334
1335 const struct ieee80211_ops *ops;
1336
1337 /*
1338 * private workqueue to mac80211. mac80211 makes this accessible
1339 * via ieee80211_queue_work()
1340 */
1341 struct workqueue_struct *workqueue;
1342
1343 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1344 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1345 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1346 spinlock_t queue_stop_reason_lock;
1347
1348 int open_count;
1349 int monitors, cooked_mntrs;
1350 /* number of interfaces with corresponding FIF_ flags */
1351 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1352 fif_probe_req;
1353 bool probe_req_reg;
1354 bool rx_mcast_action_reg;
1355 unsigned int filter_flags; /* FIF_* */
1356
1357 bool wiphy_ciphers_allocated;
1358
1359 bool use_chanctx;
1360
1361 /* protects the aggregated multicast list and filter calls */
1362 spinlock_t filter_lock;
1363
1364 /* used for uploading changed mc list */
1365 struct work_struct reconfig_filter;
1366
1367 /* aggregated multicast list */
1368 struct netdev_hw_addr_list mc_list;
1369
1370 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1371
1372 /*
1373 * suspended is true if we finished all the suspend _and_ we have
1374 * not yet come up from resume. This is to be used by mac80211
1375 * to ensure driver sanity during suspend and mac80211's own
1376 * sanity. It can eventually be used for WoW as well.
1377 */
1378 bool suspended;
1379
1380 /* suspending is true during the whole suspend process */
1381 bool suspending;
1382
1383 /*
1384 * Resuming is true while suspended, but when we're reprogramming the
1385 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1386 * again even though some other parts of the stack are still suspended
1387 * and we still drop received frames to avoid waking the stack.
1388 */
1389 bool resuming;
1390
1391 /*
1392 * quiescing is true during the suspend process _only_ to
1393 * ease timer cancelling etc.
1394 */
1395 bool quiescing;
1396
1397 /* device is started */
1398 bool started;
1399
1400 /* device is during a HW reconfig */
1401 bool in_reconfig;
1402
1403 /* reconfiguration failed ... suppress some warnings etc. */
1404 bool reconfig_failure;
1405
1406 /* wowlan is enabled -- don't reconfig on resume */
1407 bool wowlan;
1408
1409 struct wiphy_work radar_detected_work;
1410
1411 /* number of RX chains the hardware has */
1412 u8 rx_chains;
1413
1414 /* bitmap of which sbands were copied */
1415 u8 sband_allocated;
1416
1417 int tx_headroom; /* required headroom for hardware/radiotap */
1418
1419 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1420 * added to skb_queue will be processed, but frames in
1421 * skb_queue_unreliable may be dropped if the total length of these
1422 * queues increases over the limit. */
1423 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1424 struct tasklet_struct tasklet;
1425 struct sk_buff_head skb_queue;
1426 struct sk_buff_head skb_queue_unreliable;
1427
1428 spinlock_t rx_path_lock;
1429
1430 /* Station data */
1431 /*
1432 * The mutex only protects the list, hash table and
1433 * counter, reads are done with RCU.
1434 */
1435 struct mutex sta_mtx;
1436 spinlock_t tim_lock;
1437 unsigned long num_sta;
1438 struct list_head sta_list;
1439 struct rhltable sta_hash;
1440 struct rhltable link_sta_hash;
1441 struct timer_list sta_cleanup;
1442 int sta_generation;
1443
1444 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1445 struct tasklet_struct tx_pending_tasklet;
1446 struct tasklet_struct wake_txqs_tasklet;
1447
1448 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1449
1450 /* number of interfaces with allmulti RX */
1451 atomic_t iff_allmultis;
1452
1453 struct rate_control_ref *rate_ctrl;
1454
1455 struct arc4_ctx wep_tx_ctx;
1456 struct arc4_ctx wep_rx_ctx;
1457 u32 wep_iv;
1458
1459 /* see iface.c */
1460 struct list_head interfaces;
1461 struct list_head mon_list; /* only that are IFF_UP && !cooked */
1462 struct mutex iflist_mtx;
1463
1464 /*
1465 * Key mutex, protects sdata's key_list and sta_info's
1466 * key pointers and ptk_idx (write access, they're RCU.)
1467 */
1468 struct mutex key_mtx;
1469
1470 /* mutex for scan and work locking */
1471 struct mutex mtx;
1472
1473 /* Scanning and BSS list */
1474 unsigned long scanning;
1475 struct cfg80211_ssid scan_ssid;
1476 struct cfg80211_scan_request *int_scan_req;
1477 struct cfg80211_scan_request __rcu *scan_req;
1478 struct ieee80211_scan_request *hw_scan_req;
1479 struct cfg80211_chan_def scan_chandef;
1480 enum nl80211_band hw_scan_band;
1481 int scan_channel_idx;
1482 int scan_ies_len;
1483 int hw_scan_ies_bufsize;
1484 struct cfg80211_scan_info scan_info;
1485
1486 struct wiphy_work sched_scan_stopped_work;
1487 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1488 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1489 u8 scan_addr[ETH_ALEN];
1490
1491 unsigned long leave_oper_channel_time;
1492 enum mac80211_scan_state next_scan_state;
1493 struct wiphy_delayed_work scan_work;
1494 struct ieee80211_sub_if_data __rcu *scan_sdata;
1495 /* For backward compatibility only -- do not use */
1496 struct cfg80211_chan_def _oper_chandef;
1497
1498 /* Temporary remain-on-channel for off-channel operations */
1499 struct ieee80211_channel *tmp_channel;
1500
1501 /* channel contexts */
1502 struct list_head chanctx_list;
1503 struct mutex chanctx_mtx;
1504
1505 #ifdef CONFIG_MAC80211_LEDS
1506 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1507 struct led_trigger tpt_led;
1508 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1509 atomic_t radio_led_active, tpt_led_active;
1510 struct tpt_led_trigger *tpt_led_trigger;
1511 #endif
1512
1513 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1514 /* SNMP counters */
1515 /* dot11CountersTable */
1516 u32 dot11TransmittedFragmentCount;
1517 u32 dot11MulticastTransmittedFrameCount;
1518 u32 dot11FailedCount;
1519 u32 dot11RetryCount;
1520 u32 dot11MultipleRetryCount;
1521 u32 dot11FrameDuplicateCount;
1522 u32 dot11ReceivedFragmentCount;
1523 u32 dot11MulticastReceivedFrameCount;
1524 u32 dot11TransmittedFrameCount;
1525
1526 /* TX/RX handler statistics */
1527 unsigned int tx_handlers_drop;
1528 unsigned int tx_handlers_queued;
1529 unsigned int tx_handlers_drop_wep;
1530 unsigned int tx_handlers_drop_not_assoc;
1531 unsigned int tx_handlers_drop_unauth_port;
1532 unsigned int rx_handlers_drop;
1533 unsigned int rx_handlers_queued;
1534 unsigned int rx_handlers_drop_nullfunc;
1535 unsigned int rx_handlers_drop_defrag;
1536 unsigned int tx_expand_skb_head;
1537 unsigned int tx_expand_skb_head_cloned;
1538 unsigned int rx_expand_skb_head_defrag;
1539 unsigned int rx_handlers_fragments;
1540 unsigned int tx_status_drop;
1541 #define I802_DEBUG_INC(c) (c)++
1542 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1543 #define I802_DEBUG_INC(c) do { } while (0)
1544 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1545
1546
1547 int total_ps_buffered; /* total number of all buffered unicast and
1548 * multicast packets for power saving stations
1549 */
1550
1551 bool pspolling;
1552 /*
1553 * PS can only be enabled when we have exactly one managed
1554 * interface (and monitors) in PS, this then points there.
1555 */
1556 struct ieee80211_sub_if_data *ps_sdata;
1557 struct work_struct dynamic_ps_enable_work;
1558 struct work_struct dynamic_ps_disable_work;
1559 struct timer_list dynamic_ps_timer;
1560 struct notifier_block ifa_notifier;
1561 struct notifier_block ifa6_notifier;
1562
1563 /*
1564 * The dynamic ps timeout configured from user space via WEXT -
1565 * this will override whatever chosen by mac80211 internally.
1566 */
1567 int dynamic_ps_forced_timeout;
1568
1569 int user_power_level; /* in dBm, for all interfaces */
1570
1571 enum ieee80211_smps_mode smps_mode;
1572
1573 struct work_struct restart_work;
1574
1575 #ifdef CONFIG_MAC80211_DEBUGFS
1576 struct local_debugfsdentries {
1577 struct dentry *rcdir;
1578 struct dentry *keys;
1579 } debugfs;
1580 bool force_tx_status;
1581 #endif
1582
1583 /*
1584 * Remain-on-channel support
1585 */
1586 struct wiphy_delayed_work roc_work;
1587 struct list_head roc_list;
1588 struct wiphy_work hw_roc_start, hw_roc_done;
1589 unsigned long hw_roc_start_time;
1590 u64 roc_cookie_counter;
1591
1592 struct idr ack_status_frames;
1593 spinlock_t ack_status_lock;
1594
1595 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1596
1597 /* virtual monitor interface */
1598 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1599 struct cfg80211_chan_def monitor_chandef;
1600
1601 /* extended capabilities provided by mac80211 */
1602 u8 ext_capa[8];
1603 };
1604
1605 static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(const struct net_device * dev)1606 IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev)
1607 {
1608 return netdev_priv(dev);
1609 }
1610
1611 static inline struct ieee80211_sub_if_data *
IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev * wdev)1612 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1613 {
1614 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1615 }
1616
1617 static inline struct ieee80211_supported_band *
ieee80211_get_sband(struct ieee80211_sub_if_data * sdata)1618 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1619 {
1620 struct ieee80211_local *local = sdata->local;
1621 struct ieee80211_chanctx_conf *chanctx_conf;
1622 enum nl80211_band band;
1623
1624 WARN_ON(ieee80211_vif_is_mld(&sdata->vif));
1625
1626 rcu_read_lock();
1627 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
1628
1629 if (!chanctx_conf) {
1630 rcu_read_unlock();
1631 return NULL;
1632 }
1633
1634 band = chanctx_conf->def.chan->band;
1635 rcu_read_unlock();
1636
1637 return local->hw.wiphy->bands[band];
1638 }
1639
1640 static inline struct ieee80211_supported_band *
ieee80211_get_link_sband(struct ieee80211_link_data * link)1641 ieee80211_get_link_sband(struct ieee80211_link_data *link)
1642 {
1643 struct ieee80211_local *local = link->sdata->local;
1644 struct ieee80211_chanctx_conf *chanctx_conf;
1645 enum nl80211_band band;
1646
1647 rcu_read_lock();
1648 chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
1649 if (!chanctx_conf) {
1650 rcu_read_unlock();
1651 return NULL;
1652 }
1653
1654 band = chanctx_conf->def.chan->band;
1655 rcu_read_unlock();
1656
1657 return local->hw.wiphy->bands[band];
1658 }
1659
1660 /* this struct holds the value parsing from channel switch IE */
1661 struct ieee80211_csa_ie {
1662 struct cfg80211_chan_def chandef;
1663 u8 mode;
1664 u8 count;
1665 u8 ttl;
1666 u16 pre_value;
1667 u16 reason_code;
1668 u32 max_switch_time;
1669 };
1670
1671 /* Parsed Information Elements */
1672 struct ieee802_11_elems {
1673 const u8 *ie_start;
1674 size_t total_len;
1675 u32 crc;
1676
1677 /* pointers to IEs */
1678 const struct ieee80211_tdls_lnkie *lnk_id;
1679 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1680 const u8 *ext_capab;
1681 const u8 *ssid;
1682 const u8 *supp_rates;
1683 const u8 *ds_params;
1684 const struct ieee80211_tim_ie *tim;
1685 const u8 *rsn;
1686 const u8 *rsnx;
1687 const u8 *erp_info;
1688 const u8 *ext_supp_rates;
1689 const u8 *wmm_info;
1690 const u8 *wmm_param;
1691 const struct ieee80211_ht_cap *ht_cap_elem;
1692 const struct ieee80211_ht_operation *ht_operation;
1693 const struct ieee80211_vht_cap *vht_cap_elem;
1694 const struct ieee80211_vht_operation *vht_operation;
1695 const struct ieee80211_meshconf_ie *mesh_config;
1696 const u8 *he_cap;
1697 const struct ieee80211_he_operation *he_operation;
1698 const struct ieee80211_he_spr *he_spr;
1699 const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1700 const struct ieee80211_he_6ghz_capa *he_6ghz_capa;
1701 const struct ieee80211_tx_pwr_env *tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT];
1702 const u8 *uora_element;
1703 const u8 *mesh_id;
1704 const u8 *peering;
1705 const __le16 *awake_window;
1706 const u8 *preq;
1707 const u8 *prep;
1708 const u8 *perr;
1709 const struct ieee80211_rann_ie *rann;
1710 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1711 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1712 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1713 const u8 *max_channel_switch_time;
1714 const u8 *country_elem;
1715 const u8 *pwr_constr_elem;
1716 const u8 *cisco_dtpc_elem;
1717 const struct ieee80211_timeout_interval_ie *timeout_int;
1718 const u8 *opmode_notif;
1719 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1720 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1721 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1722 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
1723 const struct ieee80211_bssid_index *bssid_index;
1724 u8 max_bssid_indicator;
1725 u8 dtim_count;
1726 u8 dtim_period;
1727 const struct ieee80211_addba_ext_ie *addba_ext_ie;
1728 const struct ieee80211_s1g_cap *s1g_capab;
1729 const struct ieee80211_s1g_oper_ie *s1g_oper;
1730 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat;
1731 const struct ieee80211_aid_response_ie *aid_resp;
1732 const struct ieee80211_eht_cap_elem *eht_cap;
1733 const struct ieee80211_eht_operation *eht_operation;
1734 const struct ieee80211_multi_link_elem *ml_basic;
1735 const struct ieee80211_multi_link_elem *ml_reconf;
1736
1737 /* length of them, respectively */
1738 u8 ext_capab_len;
1739 u8 ssid_len;
1740 u8 supp_rates_len;
1741 u8 tim_len;
1742 u8 rsn_len;
1743 u8 rsnx_len;
1744 u8 ext_supp_rates_len;
1745 u8 wmm_info_len;
1746 u8 wmm_param_len;
1747 u8 he_cap_len;
1748 u8 mesh_id_len;
1749 u8 peering_len;
1750 u8 preq_len;
1751 u8 prep_len;
1752 u8 perr_len;
1753 u8 country_elem_len;
1754 u8 bssid_index_len;
1755 u8 tx_pwr_env_len[IEEE80211_TPE_MAX_IE_COUNT];
1756 u8 tx_pwr_env_num;
1757 u8 eht_cap_len;
1758
1759 /* mult-link element can be de-fragmented and thus u8 is not sufficient */
1760 size_t ml_basic_len;
1761 size_t ml_reconf_len;
1762
1763 /* The basic Multi-Link element in the original IEs */
1764 const struct element *ml_basic_elem;
1765
1766 /* The reconfiguration Multi-Link element in the original IEs */
1767 const struct element *ml_reconf_elem;
1768
1769 /*
1770 * store the per station profile pointer and length in case that the
1771 * parsing also handled Multi-Link element parsing for a specific link
1772 * ID.
1773 */
1774 struct ieee80211_mle_per_sta_profile *prof;
1775 size_t sta_prof_len;
1776
1777 /* whether a parse error occurred while retrieving these elements */
1778 bool parse_error;
1779
1780 /*
1781 * scratch buffer that can be used for various element parsing related
1782 * tasks, e.g., element de-fragmentation etc.
1783 */
1784 size_t scratch_len;
1785 u8 *scratch_pos;
1786 u8 scratch[];
1787 };
1788
hw_to_local(struct ieee80211_hw * hw)1789 static inline struct ieee80211_local *hw_to_local(
1790 struct ieee80211_hw *hw)
1791 {
1792 return container_of(hw, struct ieee80211_local, hw);
1793 }
1794
to_txq_info(struct ieee80211_txq * txq)1795 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1796 {
1797 return container_of(txq, struct txq_info, txq);
1798 }
1799
txq_has_queue(struct ieee80211_txq * txq)1800 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1801 {
1802 struct txq_info *txqi = to_txq_info(txq);
1803
1804 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1805 }
1806
1807 static inline bool
ieee80211_have_rx_timestamp(struct ieee80211_rx_status * status)1808 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1809 {
1810 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1811 status->flag & RX_FLAG_MACTIME_END);
1812 return !!(status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END |
1813 RX_FLAG_MACTIME_PLCP_START));
1814 }
1815
1816 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1817 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1818
1819 /* This function returns the number of multicast stations connected to this
1820 * interface. It returns -1 if that number is not tracked, that is for netdevs
1821 * not in AP or AP_VLAN mode or when using 4addr.
1822 */
1823 static inline int
ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data * sdata)1824 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1825 {
1826 if (sdata->vif.type == NL80211_IFTYPE_AP)
1827 return atomic_read(&sdata->u.ap.num_mcast_sta);
1828 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1829 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1830 return -1;
1831 }
1832
1833 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1834 struct ieee80211_rx_status *status,
1835 unsigned int mpdu_len,
1836 unsigned int mpdu_offset);
1837 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1838 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1839 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1840 u64 changed);
1841 void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata,
1842 u64 changed);
1843 void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata,
1844 struct ieee80211_link_data *link,
1845 u64 changed);
1846 void ieee80211_configure_filter(struct ieee80211_local *local);
1847 u64 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1848
1849 void ieee80211_handle_queued_frames(struct ieee80211_local *local);
1850
1851 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1852 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1853 u64 *cookie, gfp_t gfp);
1854
1855 void ieee80211_check_fast_rx(struct sta_info *sta);
1856 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1857 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1858 void ieee80211_clear_fast_rx(struct sta_info *sta);
1859
1860 bool ieee80211_is_our_addr(struct ieee80211_sub_if_data *sdata,
1861 const u8 *addr, int *out_link_id);
1862
1863 /* STA code */
1864 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1865 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1866 struct cfg80211_auth_request *req);
1867 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1868 struct cfg80211_assoc_request *req);
1869 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1870 struct cfg80211_deauth_request *req);
1871 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1872 struct cfg80211_disassoc_request *req);
1873 void ieee80211_send_pspoll(struct ieee80211_local *local,
1874 struct ieee80211_sub_if_data *sdata);
1875 void ieee80211_recalc_ps(struct ieee80211_local *local);
1876 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1877 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1878 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1879 struct sk_buff *skb);
1880 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
1881 struct sk_buff *skb);
1882 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1883 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1884 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1885 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1886 __le16 fc, bool acked);
1887 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1888 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1889 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1890 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
1891 u8 reason, bool tx);
1892 void ieee80211_mgd_setup_link(struct ieee80211_link_data *link);
1893 void ieee80211_mgd_stop_link(struct ieee80211_link_data *link);
1894 void ieee80211_mgd_set_link_qos_params(struct ieee80211_link_data *link);
1895
1896 /* IBSS code */
1897 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1898 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1899 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1900 const u8 *bssid, const u8 *addr, u32 supp_rates);
1901 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1902 struct cfg80211_ibss_params *params);
1903 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1904 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1905 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1906 struct sk_buff *skb);
1907 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1908 struct cfg80211_csa_settings *csa_settings,
1909 u64 *changed);
1910 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata,
1911 u64 *changed);
1912 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1913
1914 /* OCB code */
1915 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1916 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1917 const u8 *bssid, const u8 *addr, u32 supp_rates);
1918 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1919 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1920 struct ocb_setup *setup);
1921 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1922
1923 /* mesh code */
1924 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1925 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1926 struct sk_buff *skb);
1927 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1928 struct cfg80211_csa_settings *csa_settings,
1929 u64 *changed);
1930 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata,
1931 u64 *changed);
1932
1933 /* scan/BSS handling */
1934 void ieee80211_scan_work(struct wiphy *wiphy, struct wiphy_work *work);
1935 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1936 const u8 *ssid, u8 ssid_len,
1937 struct ieee80211_channel **channels,
1938 unsigned int n_channels);
1939 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1940 struct cfg80211_scan_request *req);
1941 void ieee80211_scan_cancel(struct ieee80211_local *local);
1942 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1943 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1944
1945 void ieee80211_inform_bss(struct wiphy *wiphy, struct cfg80211_bss *bss,
1946 const struct cfg80211_bss_ies *ies, void *data);
1947
1948 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1949 struct ieee80211_bss *
1950 ieee80211_bss_info_update(struct ieee80211_local *local,
1951 struct ieee80211_rx_status *rx_status,
1952 struct ieee80211_mgmt *mgmt,
1953 size_t len,
1954 struct ieee80211_channel *channel);
1955 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1956 struct ieee80211_bss *bss);
1957
1958 /* scheduled scan handling */
1959 int
1960 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1961 struct cfg80211_sched_scan_request *req);
1962 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1963 struct cfg80211_sched_scan_request *req);
1964 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1965 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1966 void ieee80211_sched_scan_stopped_work(struct wiphy *wiphy,
1967 struct wiphy_work *work);
1968
1969 /* off-channel/mgmt-tx */
1970 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1971 void ieee80211_offchannel_return(struct ieee80211_local *local);
1972 void ieee80211_roc_setup(struct ieee80211_local *local);
1973 void ieee80211_start_next_roc(struct ieee80211_local *local);
1974 void ieee80211_roc_purge(struct ieee80211_local *local,
1975 struct ieee80211_sub_if_data *sdata);
1976 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1977 struct ieee80211_channel *chan,
1978 unsigned int duration, u64 *cookie);
1979 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1980 struct wireless_dev *wdev, u64 cookie);
1981 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1982 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1983 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1984 struct wireless_dev *wdev, u64 cookie);
1985
1986 /* channel switch handling */
1987 void ieee80211_csa_finalize_work(struct work_struct *work);
1988 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1989 struct cfg80211_csa_settings *params);
1990
1991 /* color change handling */
1992 void ieee80211_color_change_finalize_work(struct work_struct *work);
1993 void ieee80211_color_collision_detection_work(struct work_struct *work);
1994
1995 /* interface handling */
1996 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
1997 NETIF_F_HW_CSUM | NETIF_F_SG | \
1998 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE | \
1999 NETIF_F_HW_TC)
2000 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM)
2001 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \
2002 MAC80211_SUPPORTED_FEATURES_RX)
2003
2004 int ieee80211_iface_init(void);
2005 void ieee80211_iface_exit(void);
2006 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
2007 unsigned char name_assign_type,
2008 struct wireless_dev **new_wdev, enum nl80211_iftype type,
2009 struct vif_params *params);
2010 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
2011 enum nl80211_iftype type);
2012 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
2013 void ieee80211_remove_interfaces(struct ieee80211_local *local);
2014 u32 ieee80211_idle_off(struct ieee80211_local *local);
2015 void ieee80211_recalc_idle(struct ieee80211_local *local);
2016 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
2017 const int offset);
2018 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
2019 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
2020 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
2021 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
2022
2023 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
2024 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
2025 bool update_bss);
2026 void ieee80211_recalc_offload(struct ieee80211_local *local);
2027
ieee80211_sdata_running(struct ieee80211_sub_if_data * sdata)2028 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
2029 {
2030 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
2031 }
2032
2033 /* link handling */
2034 void ieee80211_link_setup(struct ieee80211_link_data *link);
2035 void ieee80211_link_init(struct ieee80211_sub_if_data *sdata,
2036 int link_id,
2037 struct ieee80211_link_data *link,
2038 struct ieee80211_bss_conf *link_conf);
2039 void ieee80211_link_stop(struct ieee80211_link_data *link);
2040 int ieee80211_vif_set_links(struct ieee80211_sub_if_data *sdata,
2041 u16 new_links, u16 dormant_links);
2042 void ieee80211_vif_clear_links(struct ieee80211_sub_if_data *sdata);
2043 int __ieee80211_set_active_links(struct ieee80211_vif *vif, u16 active_links);
2044
2045 /* tx handling */
2046 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
2047 void ieee80211_tx_pending(struct tasklet_struct *t);
2048 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
2049 struct net_device *dev);
2050 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
2051 struct net_device *dev);
2052 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb,
2053 struct net_device *dev);
2054 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
2055 struct net_device *dev,
2056 u32 info_flags,
2057 u32 ctrl_flags,
2058 u64 *cookie);
2059 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
2060 struct sk_buff_head *skbs);
2061 struct sk_buff *
2062 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
2063 struct sk_buff *skb, u32 info_flags);
2064 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
2065 int retry_count, int shift, bool send_to_cooked,
2066 struct ieee80211_tx_status *status);
2067
2068 void ieee80211_check_fast_xmit(struct sta_info *sta);
2069 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
2070 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
2071 void ieee80211_clear_fast_xmit(struct sta_info *sta);
2072 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
2073 const u8 *buf, size_t len,
2074 const u8 *dest, __be16 proto, bool unencrypted,
2075 int link_id, u64 *cookie);
2076 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
2077 const u8 *buf, size_t len);
2078 void __ieee80211_xmit_fast(struct ieee80211_sub_if_data *sdata,
2079 struct sta_info *sta,
2080 struct ieee80211_fast_tx *fast_tx,
2081 struct sk_buff *skb, bool ampdu,
2082 const u8 *da, const u8 *sa);
2083 void ieee80211_aggr_check(struct ieee80211_sub_if_data *sdata,
2084 struct sta_info *sta, struct sk_buff *skb);
2085
2086 /* HT */
2087 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
2088 struct ieee80211_sta_ht_cap *ht_cap);
2089 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
2090 struct ieee80211_supported_band *sband,
2091 const struct ieee80211_ht_cap *ht_cap_ie,
2092 struct link_sta_info *link_sta);
2093 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
2094 const u8 *da, u16 tid,
2095 u16 initiator, u16 reason_code);
2096 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
2097 enum ieee80211_smps_mode smps, const u8 *da,
2098 const u8 *bssid);
2099 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
2100 enum ieee80211_smps_mode smps_mode_new);
2101
2102 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
2103 u16 initiator, u16 reason, bool stop);
2104 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
2105 u16 initiator, u16 reason, bool stop);
2106 void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
2107 u8 dialog_token, u16 timeout,
2108 u16 start_seq_num, u16 ba_policy, u16 tid,
2109 u16 buf_size, bool tx, bool auto_seq,
2110 const struct ieee80211_addba_ext_ie *addbaext);
2111 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
2112 enum ieee80211_agg_stop_reason reason);
2113 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
2114 struct sta_info *sta,
2115 struct ieee80211_mgmt *mgmt, size_t len);
2116 void ieee80211_process_addba_resp(struct ieee80211_local *local,
2117 struct sta_info *sta,
2118 struct ieee80211_mgmt *mgmt,
2119 size_t len);
2120 void ieee80211_process_addba_request(struct ieee80211_local *local,
2121 struct sta_info *sta,
2122 struct ieee80211_mgmt *mgmt,
2123 size_t len);
2124
2125 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2126 enum ieee80211_agg_stop_reason reason);
2127 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2128 enum ieee80211_agg_stop_reason reason);
2129 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
2130 struct tid_ampdu_tx *tid_tx);
2131 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
2132 struct tid_ampdu_tx *tid_tx);
2133 void ieee80211_ba_session_work(struct work_struct *work);
2134 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
2135 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
2136
2137 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
2138 enum nl80211_smps_mode
2139 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
2140
2141 /* VHT */
2142 void
2143 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
2144 struct ieee80211_supported_band *sband,
2145 const struct ieee80211_vht_cap *vht_cap_ie,
2146 const struct ieee80211_vht_cap *vht_cap_ie2,
2147 struct link_sta_info *link_sta);
2148 enum ieee80211_sta_rx_bandwidth
2149 ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta);
2150 enum ieee80211_sta_rx_bandwidth
2151 ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta);
2152 void ieee80211_sta_init_nss(struct link_sta_info *link_sta);
2153 enum ieee80211_sta_rx_bandwidth
2154 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
2155 enum nl80211_chan_width
2156 ieee80211_sta_cap_chan_bw(struct link_sta_info *link_sta);
2157 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
2158 struct ieee80211_link_data *link,
2159 struct ieee80211_mgmt *mgmt);
2160 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2161 struct link_sta_info *sta,
2162 u8 opmode, enum nl80211_band band);
2163 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2164 struct link_sta_info *sta,
2165 u8 opmode, enum nl80211_band band);
2166 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
2167 struct ieee80211_sta_vht_cap *vht_cap);
2168 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
2169 u16 vht_mask[NL80211_VHT_NSS_MAX]);
2170 enum nl80211_chan_width
2171 ieee80211_sta_rx_bw_to_chan_width(struct link_sta_info *sta);
2172
2173 /* HE */
2174 void
2175 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
2176 struct ieee80211_supported_band *sband,
2177 const u8 *he_cap_ie, u8 he_cap_len,
2178 const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
2179 struct link_sta_info *link_sta);
2180 void
2181 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
2182 const struct ieee80211_he_spr *he_spr_ie_elem);
2183
2184 void
2185 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
2186 const struct ieee80211_he_operation *he_op_ie_elem);
2187
2188 /* S1G */
2189 void ieee80211_s1g_sta_rate_init(struct sta_info *sta);
2190 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb);
2191 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata,
2192 struct sk_buff *skb);
2193 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata,
2194 struct sk_buff *skb);
2195
2196 /* Spectrum management */
2197 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
2198 struct ieee80211_mgmt *mgmt,
2199 size_t len);
2200 /**
2201 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
2202 * @sdata: the sdata of the interface which has received the frame
2203 * @elems: parsed 802.11 elements received with the frame
2204 * @current_band: indicates the current band
2205 * @vht_cap_info: VHT capabilities of the transmitter
2206 * @conn_flags: contains information about own capabilities and restrictions
2207 * to decide which channel switch announcements can be accepted, using
2208 * flags from &enum ieee80211_conn_flags.
2209 * @bssid: the currently connected bssid (for reporting)
2210 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
2211 All of them will be filled with if success only.
2212 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
2213 */
2214 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
2215 struct ieee802_11_elems *elems,
2216 enum nl80211_band current_band,
2217 u32 vht_cap_info,
2218 ieee80211_conn_flags_t conn_flags, u8 *bssid,
2219 struct ieee80211_csa_ie *csa_ie);
2220
2221 /* Suspend/resume and hw reconfiguration */
2222 int ieee80211_reconfig(struct ieee80211_local *local);
2223 void ieee80211_stop_device(struct ieee80211_local *local);
2224
2225 int __ieee80211_suspend(struct ieee80211_hw *hw,
2226 struct cfg80211_wowlan *wowlan);
2227
__ieee80211_resume(struct ieee80211_hw * hw)2228 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
2229 {
2230 struct ieee80211_local *local = hw_to_local(hw);
2231
2232 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
2233 !test_bit(SCAN_COMPLETED, &local->scanning),
2234 "%s: resume with hardware scan still in progress\n",
2235 wiphy_name(hw->wiphy));
2236
2237 return ieee80211_reconfig(hw_to_local(hw));
2238 }
2239
2240 /* utility functions/constants */
2241 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
2242 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
2243 int rate, int erp, int short_preamble,
2244 int shift);
2245 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
2246 struct ieee80211_tx_queue_params *qparam,
2247 int ac);
2248 void ieee80211_set_wmm_default(struct ieee80211_link_data *link,
2249 bool bss_notify, bool enable_qos);
2250 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
2251 struct sta_info *sta, struct sk_buff *skb);
2252
2253 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2254 struct sk_buff *skb, int tid, int link_id,
2255 enum nl80211_band band);
2256
2257 /* sta_out needs to be checked for ERR_PTR() before using */
2258 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata,
2259 struct sk_buff *skb,
2260 struct sta_info **sta_out);
2261
2262 static inline void
ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid,enum nl80211_band band)2263 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2264 struct sk_buff *skb, int tid,
2265 enum nl80211_band band)
2266 {
2267 rcu_read_lock();
2268 __ieee80211_tx_skb_tid_band(sdata, skb, tid, -1, band);
2269 rcu_read_unlock();
2270 }
2271
2272 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
2273 struct sk_buff *skb, int tid, int link_id);
2274
ieee80211_tx_skb(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb)2275 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
2276 struct sk_buff *skb)
2277 {
2278 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
2279 ieee80211_tx_skb_tid(sdata, skb, 7, -1);
2280 }
2281
2282 /**
2283 * struct ieee80211_elems_parse_params - element parsing parameters
2284 * @start: pointer to the elements
2285 * @len: length of the elements
2286 * @action: %true if the elements came from an action frame
2287 * @filter: bitmap of element IDs to filter out while calculating
2288 * the element CRC
2289 * @crc: CRC starting value
2290 * @bss: the BSS to parse this as, for multi-BSSID cases this can
2291 * represent a non-transmitting BSS in which case the data
2292 * for that non-transmitting BSS is returned
2293 * @link_id: the link ID to parse elements for, if a STA profile
2294 * is present in the multi-link element, or -1 to ignore;
2295 * note that the code currently assumes parsing an association
2296 * (or re-association) response frame if this is given
2297 * @from_ap: frame is received from an AP (currently used only
2298 * for EHT capabilities parsing)
2299 */
2300 struct ieee80211_elems_parse_params {
2301 const u8 *start;
2302 size_t len;
2303 bool action;
2304 u64 filter;
2305 u32 crc;
2306 struct cfg80211_bss *bss;
2307 int link_id;
2308 bool from_ap;
2309 };
2310
2311 struct ieee802_11_elems *
2312 ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params);
2313
2314 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)2315 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
2316 u64 filter, u32 crc,
2317 struct cfg80211_bss *bss)
2318 {
2319 struct ieee80211_elems_parse_params params = {
2320 .start = start,
2321 .len = len,
2322 .action = action,
2323 .filter = filter,
2324 .crc = crc,
2325 .bss = bss,
2326 .link_id = -1,
2327 };
2328
2329 return ieee802_11_parse_elems_full(¶ms);
2330 }
2331
2332 static inline struct ieee802_11_elems *
ieee802_11_parse_elems(const u8 * start,size_t len,bool action,struct cfg80211_bss * bss)2333 ieee802_11_parse_elems(const u8 *start, size_t len, bool action,
2334 struct cfg80211_bss *bss)
2335 {
2336 return ieee802_11_parse_elems_crc(start, len, action, 0, 0, bss);
2337 }
2338
2339 void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos, u8 frag_id);
2340
2341 extern const int ieee802_1d_to_ac[8];
2342
ieee80211_ac_from_tid(int tid)2343 static inline int ieee80211_ac_from_tid(int tid)
2344 {
2345 return ieee802_1d_to_ac[tid & 7];
2346 }
2347
2348 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
2349 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
2350 void ieee80211_dynamic_ps_timer(struct timer_list *t);
2351 void ieee80211_send_nullfunc(struct ieee80211_local *local,
2352 struct ieee80211_sub_if_data *sdata,
2353 bool powersave);
2354 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
2355 struct ieee80211_sub_if_data *sdata);
2356 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2357 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
2358
2359 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
2360 unsigned long queues,
2361 enum queue_stop_reason reason,
2362 bool refcounted);
2363 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
2364 struct ieee80211_sub_if_data *sdata,
2365 enum queue_stop_reason reason);
2366 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
2367 struct ieee80211_sub_if_data *sdata,
2368 enum queue_stop_reason reason);
2369 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
2370 unsigned long queues,
2371 enum queue_stop_reason reason,
2372 bool refcounted);
2373 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
2374 enum queue_stop_reason reason,
2375 bool refcounted);
2376 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
2377 enum queue_stop_reason reason,
2378 bool refcounted);
2379 void ieee80211_add_pending_skb(struct ieee80211_local *local,
2380 struct sk_buff *skb);
2381 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
2382 struct sk_buff_head *skbs);
2383 void ieee80211_flush_queues(struct ieee80211_local *local,
2384 struct ieee80211_sub_if_data *sdata, bool drop);
2385 void __ieee80211_flush_queues(struct ieee80211_local *local,
2386 struct ieee80211_sub_if_data *sdata,
2387 unsigned int queues, bool drop);
2388
ieee80211_can_run_worker(struct ieee80211_local * local)2389 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2390 {
2391 /*
2392 * It's unsafe to try to do any work during reconfigure flow.
2393 * When the flow ends the work will be requeued.
2394 */
2395 if (local->in_reconfig)
2396 return false;
2397
2398 /*
2399 * If quiescing is set, we are racing with __ieee80211_suspend.
2400 * __ieee80211_suspend flushes the workers after setting quiescing,
2401 * and we check quiescing / suspended before enqueing new workers.
2402 * We should abort the worker to avoid the races below.
2403 */
2404 if (local->quiescing)
2405 return false;
2406
2407 /*
2408 * We might already be suspended if the following scenario occurs:
2409 * __ieee80211_suspend Control path
2410 *
2411 * if (local->quiescing)
2412 * return;
2413 * local->quiescing = true;
2414 * flush_workqueue();
2415 * queue_work(...);
2416 * local->suspended = true;
2417 * local->quiescing = false;
2418 * worker starts running...
2419 */
2420 if (local->suspended)
2421 return false;
2422
2423 return true;
2424 }
2425
2426 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2427 void ieee80211_txq_set_params(struct ieee80211_local *local);
2428 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2429 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2430 struct sta_info *sta,
2431 struct txq_info *txq, int tid);
2432 void ieee80211_txq_purge(struct ieee80211_local *local,
2433 struct txq_info *txqi);
2434 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2435 struct ieee80211_sub_if_data *sdata);
2436 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2437 struct txq_info *txqi);
2438 void ieee80211_wake_txqs(struct tasklet_struct *t);
2439 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2440 u16 transaction, u16 auth_alg, u16 status,
2441 const u8 *extra, size_t extra_len, const u8 *bssid,
2442 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2443 u32 tx_flags);
2444 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2445 const u8 *da, const u8 *bssid,
2446 u16 stype, u16 reason,
2447 bool send_frame, u8 *frame_buf);
2448 u8 *ieee80211_write_he_6ghz_cap(u8 *pos, __le16 cap, u8 *end);
2449
2450 enum {
2451 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
2452 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
2453 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
2454 };
2455
2456 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2457 size_t buffer_len,
2458 struct ieee80211_scan_ies *ie_desc,
2459 const u8 *ie, size_t ie_len,
2460 u8 bands_used, u32 *rate_masks,
2461 struct cfg80211_chan_def *chandef,
2462 u32 flags);
2463 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2464 const u8 *src, const u8 *dst,
2465 u32 ratemask,
2466 struct ieee80211_channel *chan,
2467 const u8 *ssid, size_t ssid_len,
2468 const u8 *ie, size_t ie_len,
2469 u32 flags);
2470 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2471 struct ieee802_11_elems *elems,
2472 enum nl80211_band band, u32 *basic_rates);
2473 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2474 struct ieee80211_link_data *link,
2475 enum ieee80211_smps_mode smps_mode);
2476 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata,
2477 struct ieee80211_link_data *link);
2478 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata,
2479 int link_id);
2480
2481 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2482 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2483 u16 cap);
2484 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2485 const struct cfg80211_chan_def *chandef,
2486 u16 prot_mode, bool rifs_mode);
2487 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2488 const struct cfg80211_chan_def *chandef);
2489 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2490 u32 cap);
2491 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2492 const struct cfg80211_chan_def *chandef);
2493 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2494 u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos,
2495 const struct ieee80211_sta_he_cap *he_cap,
2496 u8 *end);
2497 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2498 enum ieee80211_smps_mode smps_mode,
2499 struct sk_buff *skb);
2500 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef);
2501 u8 *ieee80211_ie_build_eht_oper(u8 *pos, struct cfg80211_chan_def *chandef,
2502 const struct ieee80211_sta_eht_cap *eht_cap);
2503 int ieee80211_parse_bitrates(enum nl80211_chan_width width,
2504 const struct ieee80211_supported_band *sband,
2505 const u8 *srates, int srates_len, u32 *rates);
2506 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2507 struct sk_buff *skb, bool need_basic,
2508 enum nl80211_band band);
2509 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2510 struct sk_buff *skb, bool need_basic,
2511 enum nl80211_band band);
2512 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2513 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
2514 struct ieee80211_sta_s1g_cap *caps,
2515 struct sk_buff *skb);
2516 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
2517 struct sk_buff *skb);
2518 u8 *ieee80211_ie_build_s1g_cap(u8 *pos, struct ieee80211_sta_s1g_cap *s1g_cap);
2519
2520 /* channel management */
2521 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2522 struct cfg80211_chan_def *chandef);
2523 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
2524 const struct ieee80211_vht_operation *oper,
2525 const struct ieee80211_ht_operation *htop,
2526 struct cfg80211_chan_def *chandef);
2527 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation *eht_oper,
2528 bool support_160, bool support_320,
2529 struct cfg80211_chan_def *chandef);
2530 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
2531 const struct ieee80211_he_operation *he_oper,
2532 const struct ieee80211_eht_operation *eht_oper,
2533 struct cfg80211_chan_def *chandef);
2534 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
2535 struct cfg80211_chan_def *chandef);
2536 ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2537
2538 int __must_check
2539 ieee80211_link_use_channel(struct ieee80211_link_data *link,
2540 const struct cfg80211_chan_def *chandef,
2541 enum ieee80211_chanctx_mode mode);
2542 int __must_check
2543 ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link,
2544 const struct cfg80211_chan_def *chandef,
2545 enum ieee80211_chanctx_mode mode,
2546 bool radar_required);
2547 int __must_check
2548 ieee80211_link_use_reserved_context(struct ieee80211_link_data *link);
2549 int ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link);
2550
2551 int __must_check
2552 ieee80211_link_change_bandwidth(struct ieee80211_link_data *link,
2553 const struct cfg80211_chan_def *chandef,
2554 u64 *changed);
2555 void ieee80211_link_release_channel(struct ieee80211_link_data *link);
2556 void ieee80211_link_vlan_copy_chanctx(struct ieee80211_link_data *link);
2557 void ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link,
2558 bool clear);
2559 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2560 struct ieee80211_chanctx *ctx);
2561
2562 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2563 struct ieee80211_chanctx *chanctx);
2564 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2565 struct ieee80211_chanctx *ctx,
2566 struct ieee80211_link_data *rsvd_for);
2567 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2568
2569 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2570 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2571 void ieee80211_dfs_radar_detected_work(struct wiphy *wiphy,
2572 struct wiphy_work *work);
2573 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2574 struct cfg80211_csa_settings *csa_settings);
2575
2576 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2577 struct ieee80211_sub_if_data *sdata);
2578 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2579 const struct cfg80211_chan_def *chandef,
2580 enum ieee80211_chanctx_mode chanmode,
2581 u8 radar_detect);
2582 int ieee80211_max_num_channels(struct ieee80211_local *local);
2583 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2584 struct ieee80211_chanctx *ctx);
2585
2586 /* TDLS */
2587 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2588 const u8 *peer, int link_id,
2589 u8 action_code, u8 dialog_token, u16 status_code,
2590 u32 peer_capability, bool initiator,
2591 const u8 *extra_ies, size_t extra_ies_len);
2592 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2593 const u8 *peer, enum nl80211_tdls_operation oper);
2594 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2595 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2596 const u8 *addr, u8 oper_class,
2597 struct cfg80211_chan_def *chandef);
2598 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2599 struct net_device *dev,
2600 const u8 *addr);
2601 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2602 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2603 const u8 *peer, u16 reason);
2604 void
2605 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata,
2606 struct sk_buff *skb);
2607
2608
2609 const char *ieee80211_get_reason_code_string(u16 reason_code);
2610 u16 ieee80211_encode_usf(int val);
2611 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
2612 enum nl80211_iftype type);
2613
2614 extern const struct ethtool_ops ieee80211_ethtool_ops;
2615
2616 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw,
2617 struct ieee80211_vif *vif,
2618 struct ieee80211_sta *pubsta,
2619 int len, bool ampdu);
2620 #ifdef CONFIG_MAC80211_NOINLINE
2621 #define debug_noinline noinline
2622 #else
2623 #define debug_noinline
2624 #endif
2625
2626 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache);
2627 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache);
2628
2629 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2630 u8 *ieee80211_ie_build_eht_cap(u8 *pos,
2631 const struct ieee80211_sta_he_cap *he_cap,
2632 const struct ieee80211_sta_eht_cap *eht_cap,
2633 u8 *end,
2634 bool for_ap);
2635
2636 void
2637 ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata,
2638 struct ieee80211_supported_band *sband,
2639 const u8 *he_cap_ie, u8 he_cap_len,
2640 const struct ieee80211_eht_cap_elem *eht_cap_ie_elem,
2641 u8 eht_cap_len,
2642 struct link_sta_info *link_sta);
2643 #endif /* IEEE80211_I_H */
2644