1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright 2002-2005, Instant802 Networks, Inc.
4 * Copyright 2005, Devicescape Software, Inc.
5 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
6 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net>
7 * Copyright 2013-2015 Intel Mobile Communications GmbH
8 * Copyright (C) 2018-2024 Intel Corporation
9 */
10
11 #ifndef IEEE80211_I_H
12 #define IEEE80211_I_H
13
14 #include <linux/kernel.h>
15 #include <linux/device.h>
16 #include <linux/if_ether.h>
17 #include <linux/interrupt.h>
18 #include <linux/list.h>
19 #include <linux/netdevice.h>
20 #include <linux/skbuff.h>
21 #include <linux/workqueue.h>
22 #include <linux/types.h>
23 #include <linux/spinlock.h>
24 #include <linux/etherdevice.h>
25 #include <linux/leds.h>
26 #include <linux/idr.h>
27 #include <linux/rhashtable.h>
28 #include <linux/rbtree.h>
29 #include <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 enum ieee80211_status_data {
89 IEEE80211_STATUS_TYPE_MASK = 0x00f,
90 IEEE80211_STATUS_TYPE_INVALID = 0,
91 IEEE80211_STATUS_TYPE_SMPS = 1,
92 IEEE80211_STATUS_TYPE_NEG_TTLM = 2,
93 IEEE80211_STATUS_SUBDATA_MASK = 0x1ff0,
94 };
95
96 static inline bool
ieee80211_sta_keep_active(struct sta_info * sta,u8 ac)97 ieee80211_sta_keep_active(struct sta_info *sta, u8 ac)
98 {
99 /* Keep a station's queues on the active list for deficit accounting
100 * purposes if it was active or queued during the last 100ms.
101 */
102 return time_before_eq(jiffies, sta->airtime[ac].last_active + HZ / 10);
103 }
104
105 struct ieee80211_bss {
106 u32 device_ts_beacon, device_ts_presp;
107
108 bool wmm_used;
109 bool uapsd_supported;
110
111 #define IEEE80211_MAX_SUPP_RATES 32
112 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
113 size_t supp_rates_len;
114 struct ieee80211_rate *beacon_rate;
115
116 u32 vht_cap_info;
117
118 /*
119 * During association, we save an ERP value from a probe response so
120 * that we can feed ERP info to the driver when handling the
121 * association completes. these fields probably won't be up-to-date
122 * otherwise, you probably don't want to use them.
123 */
124 bool has_erp_value;
125 u8 erp_value;
126
127 /* Keep track of the corruption of the last beacon/probe response. */
128 u8 corrupt_data;
129
130 /* Keep track of what bits of information we have valid info for. */
131 u8 valid_data;
132 };
133
134 /**
135 * enum ieee80211_bss_corrupt_data_flags - BSS data corruption flags
136 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
137 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
138 *
139 * These are bss flags that are attached to a bss in the
140 * @corrupt_data field of &struct ieee80211_bss.
141 */
142 enum ieee80211_bss_corrupt_data_flags {
143 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
144 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
145 };
146
147 /**
148 * enum ieee80211_bss_valid_data_flags - BSS valid data flags
149 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
150 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
151 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
152 *
153 * These are bss flags that are attached to a bss in the
154 * @valid_data field of &struct ieee80211_bss. They show which parts
155 * of the data structure were received as a result of an un-corrupted
156 * beacon/probe response.
157 */
158 enum ieee80211_bss_valid_data_flags {
159 IEEE80211_BSS_VALID_WMM = BIT(1),
160 IEEE80211_BSS_VALID_RATES = BIT(2),
161 IEEE80211_BSS_VALID_ERP = BIT(3)
162 };
163
164 typedef unsigned __bitwise ieee80211_tx_result;
165 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
166 #define TX_DROP ((__force ieee80211_tx_result) 1u)
167 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
168
169 #define IEEE80211_TX_UNICAST BIT(1)
170 #define IEEE80211_TX_PS_BUFFERED BIT(2)
171
172 struct ieee80211_tx_data {
173 struct sk_buff *skb;
174 struct sk_buff_head skbs;
175 struct ieee80211_local *local;
176 struct ieee80211_sub_if_data *sdata;
177 struct sta_info *sta;
178 struct ieee80211_key *key;
179 struct ieee80211_tx_rate rate;
180
181 unsigned int flags;
182 };
183
184 /**
185 * enum ieee80211_packet_rx_flags - packet RX flags
186 * @IEEE80211_RX_AMSDU: a-MSDU packet
187 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
188 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
189 *
190 * These are per-frame flags that are attached to a frame in the
191 * @rx_flags field of &struct ieee80211_rx_status.
192 */
193 enum ieee80211_packet_rx_flags {
194 IEEE80211_RX_AMSDU = BIT(3),
195 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
196 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
197 };
198
199 /**
200 * enum ieee80211_rx_flags - RX data flags
201 *
202 * @IEEE80211_RX_CMNTR: received on cooked monitor already
203 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
204 * to cfg80211_report_obss_beacon().
205 *
206 * These flags are used across handling multiple interfaces
207 * for a single frame.
208 */
209 enum ieee80211_rx_flags {
210 IEEE80211_RX_CMNTR = BIT(0),
211 IEEE80211_RX_BEACON_REPORTED = BIT(1),
212 };
213
214 struct ieee80211_rx_data {
215 struct list_head *list;
216 struct sk_buff *skb;
217 struct ieee80211_local *local;
218 struct ieee80211_sub_if_data *sdata;
219 struct ieee80211_link_data *link;
220 struct sta_info *sta;
221 struct link_sta_info *link_sta;
222 struct ieee80211_key *key;
223
224 unsigned int flags;
225
226 /*
227 * Index into sequence numbers array, 0..16
228 * since the last (16) is used for non-QoS,
229 * will be 16 on non-QoS frames.
230 */
231 int seqno_idx;
232
233 /*
234 * Index into the security IV/PN arrays, 0..16
235 * since the last (16) is used for CCMP-encrypted
236 * management frames, will be set to 16 on mgmt
237 * frames and 0 on non-QoS frames.
238 */
239 int security_idx;
240
241 int link_id;
242
243 union {
244 struct {
245 u32 iv32;
246 u16 iv16;
247 } tkip;
248 struct {
249 u8 pn[IEEE80211_CCMP_PN_LEN];
250 } ccm_gcm;
251 };
252 };
253
254 struct ieee80211_csa_settings {
255 const u16 *counter_offsets_beacon;
256 const u16 *counter_offsets_presp;
257
258 int n_counter_offsets_beacon;
259 int n_counter_offsets_presp;
260
261 u8 count;
262 };
263
264 struct ieee80211_color_change_settings {
265 u16 counter_offset_beacon;
266 u16 counter_offset_presp;
267 u8 count;
268 };
269
270 struct beacon_data {
271 u8 *head, *tail;
272 int head_len, tail_len;
273 struct ieee80211_meshconf_ie *meshconf;
274 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
275 u8 cntdwn_current_counter;
276 struct cfg80211_mbssid_elems *mbssid_ies;
277 struct cfg80211_rnr_elems *rnr_ies;
278 struct rcu_head rcu_head;
279 };
280
281 struct probe_resp {
282 struct rcu_head rcu_head;
283 int len;
284 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
285 u8 data[];
286 };
287
288 struct fils_discovery_data {
289 struct rcu_head rcu_head;
290 int len;
291 u8 data[];
292 };
293
294 struct unsol_bcast_probe_resp_data {
295 struct rcu_head rcu_head;
296 int len;
297 u8 data[];
298 };
299
300 struct ps_data {
301 /* yes, this looks ugly, but guarantees that we can later use
302 * bitmap_empty :)
303 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
304 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
305 __aligned(__alignof__(unsigned long));
306 struct sk_buff_head bc_buf;
307 atomic_t num_sta_ps; /* number of stations in PS mode */
308 int dtim_count;
309 bool dtim_bc_mc;
310 };
311
312 struct ieee80211_if_ap {
313 struct list_head vlans; /* write-protected with RTNL and local->mtx */
314
315 struct ps_data ps;
316 atomic_t num_mcast_sta; /* number of stations receiving multicast */
317
318 bool multicast_to_unicast;
319 bool active;
320 };
321
322 struct ieee80211_if_vlan {
323 struct list_head list; /* write-protected with RTNL and local->mtx */
324
325 /* used for all tx if the VLAN is configured to 4-addr mode */
326 struct sta_info __rcu *sta;
327 atomic_t num_mcast_sta; /* number of stations receiving multicast */
328 };
329
330 struct mesh_stats {
331 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
332 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
333 __u32 fwded_frames; /* Mesh total forwarded frames */
334 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
335 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
336 };
337
338 #define PREQ_Q_F_START 0x1
339 #define PREQ_Q_F_REFRESH 0x2
340 struct mesh_preq_queue {
341 struct list_head list;
342 u8 dst[ETH_ALEN];
343 u8 flags;
344 };
345
346 struct ieee80211_roc_work {
347 struct list_head list;
348
349 struct ieee80211_sub_if_data *sdata;
350
351 struct ieee80211_channel *chan;
352
353 bool started, abort, hw_begun, notified;
354 bool on_channel;
355
356 unsigned long start_time;
357
358 u32 duration, req_duration;
359 struct sk_buff *frame;
360 u64 cookie, mgmt_tx_cookie;
361 enum ieee80211_roc_type type;
362 };
363
364 /* flags used in struct ieee80211_if_managed.flags */
365 enum ieee80211_sta_flags {
366 IEEE80211_STA_CONNECTION_POLL = BIT(1),
367 IEEE80211_STA_CONTROL_PORT = BIT(2),
368 IEEE80211_STA_MFP_ENABLED = BIT(6),
369 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
370 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
371 IEEE80211_STA_ENABLE_RRM = BIT(15),
372 };
373
374 enum ieee80211_conn_mode {
375 IEEE80211_CONN_MODE_S1G,
376 IEEE80211_CONN_MODE_LEGACY,
377 IEEE80211_CONN_MODE_HT,
378 IEEE80211_CONN_MODE_VHT,
379 IEEE80211_CONN_MODE_HE,
380 IEEE80211_CONN_MODE_EHT,
381 };
382
383 #define IEEE80211_CONN_MODE_HIGHEST IEEE80211_CONN_MODE_EHT
384
385 enum ieee80211_conn_bw_limit {
386 IEEE80211_CONN_BW_LIMIT_20,
387 IEEE80211_CONN_BW_LIMIT_40,
388 IEEE80211_CONN_BW_LIMIT_80,
389 IEEE80211_CONN_BW_LIMIT_160, /* also 80+80 */
390 IEEE80211_CONN_BW_LIMIT_320,
391 };
392
393 struct ieee80211_conn_settings {
394 enum ieee80211_conn_mode mode;
395 enum ieee80211_conn_bw_limit bw_limit;
396 };
397
398 extern const struct ieee80211_conn_settings ieee80211_conn_settings_unlimited;
399
400 struct ieee80211_mgd_auth_data {
401 struct cfg80211_bss *bss;
402 unsigned long timeout;
403 int tries;
404 u16 algorithm, expected_transaction;
405
406 u8 key[WLAN_KEY_LEN_WEP104];
407 u8 key_len, key_idx;
408 bool done, waiting;
409 bool peer_confirmed;
410 bool timeout_started;
411 int link_id;
412
413 u8 ap_addr[ETH_ALEN] __aligned(2);
414
415 u16 sae_trans, sae_status;
416 size_t data_len;
417 u8 data[];
418 };
419
420 struct ieee80211_mgd_assoc_data {
421 struct {
422 struct cfg80211_bss *bss;
423
424 u8 addr[ETH_ALEN] __aligned(2);
425
426 u8 ap_ht_param;
427
428 struct ieee80211_vht_cap ap_vht_cap;
429
430 size_t elems_len;
431 u8 *elems; /* pointing to inside ie[] below */
432
433 struct ieee80211_conn_settings conn;
434
435 u16 status;
436
437 bool disabled;
438 } link[IEEE80211_MLD_MAX_NUM_LINKS];
439
440 u8 ap_addr[ETH_ALEN] __aligned(2);
441
442 /* this is for a workaround, so we use it only for non-MLO */
443 const u8 *supp_rates;
444 u8 supp_rates_len;
445
446 unsigned long timeout;
447 int tries;
448
449 u8 prev_ap_addr[ETH_ALEN];
450 u8 ssid[IEEE80211_MAX_SSID_LEN];
451 u8 ssid_len;
452 bool wmm, uapsd;
453 bool need_beacon;
454 bool synced;
455 bool timeout_started;
456 bool comeback; /* whether the AP has requested association comeback */
457 bool s1g;
458 bool spp_amsdu;
459
460 unsigned int assoc_link_id;
461
462 u8 fils_nonces[2 * FILS_NONCE_LEN];
463 u8 fils_kek[FILS_MAX_KEK_LEN];
464 size_t fils_kek_len;
465
466 size_t ie_len;
467 u8 *ie_pos; /* used to fill ie[] with link[].elems */
468 u8 ie[];
469 };
470
471 struct ieee80211_sta_tx_tspec {
472 /* timestamp of the first packet in the time slice */
473 unsigned long time_slice_start;
474
475 u32 admitted_time; /* in usecs, unlike over the air */
476 u8 tsid;
477 s8 up; /* signed to be able to invalidate with -1 during teardown */
478
479 /* consumed TX time in microseconds in the time slice */
480 u32 consumed_tx_time;
481 enum {
482 TX_TSPEC_ACTION_NONE = 0,
483 TX_TSPEC_ACTION_DOWNGRADE,
484 TX_TSPEC_ACTION_STOP_DOWNGRADE,
485 } action;
486 bool downgraded;
487 };
488
489 /* Advertised TID-to-link mapping info */
490 struct ieee80211_adv_ttlm_info {
491 /* time in TUs at which the new mapping is established, or 0 if there is
492 * no planned advertised TID-to-link mapping
493 */
494 u16 switch_time;
495 u32 duration; /* duration of the planned T2L map in TUs */
496 u16 map; /* map of usable links for all TIDs */
497 bool active; /* whether the advertised mapping is active or not */
498 };
499
500 DECLARE_EWMA(beacon_signal, 4, 4)
501
502 struct ieee80211_if_managed {
503 struct timer_list timer;
504 struct timer_list conn_mon_timer;
505 struct timer_list bcn_mon_timer;
506 struct wiphy_work monitor_work;
507 struct wiphy_work beacon_connection_loss_work;
508 struct wiphy_work csa_connection_drop_work;
509
510 unsigned long beacon_timeout;
511 unsigned long probe_timeout;
512 int probe_send_count;
513 bool nullfunc_failed;
514 u8 connection_loss:1,
515 driver_disconnect:1,
516 reconnect:1,
517 associated:1;
518
519 struct ieee80211_mgd_auth_data *auth_data;
520 struct ieee80211_mgd_assoc_data *assoc_data;
521
522 bool powersave; /* powersave requested for this iface */
523 bool broken_ap; /* AP is broken -- turn off powersave */
524
525 unsigned int flags;
526
527 u16 mcast_seq_last;
528
529 bool status_acked;
530 bool status_received;
531 __le16 status_fc;
532
533 enum {
534 IEEE80211_MFP_DISABLED,
535 IEEE80211_MFP_OPTIONAL,
536 IEEE80211_MFP_REQUIRED
537 } mfp; /* management frame protection */
538
539 /*
540 * Bitmask of enabled u-apsd queues,
541 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
542 * to take effect.
543 */
544 unsigned int uapsd_queues;
545
546 /*
547 * Maximum number of buffered frames AP can deliver during a
548 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
549 * Needs a new association to take effect.
550 */
551 unsigned int uapsd_max_sp_len;
552
553 u8 use_4addr;
554
555 /*
556 * State variables for keeping track of RSSI of the AP currently
557 * connected to and informing driver when RSSI has gone
558 * below/above a certain threshold.
559 */
560 int rssi_min_thold, rssi_max_thold;
561
562 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
563 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
564 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
565 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
566 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */
567 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */
568
569 /* TDLS support */
570 u8 tdls_peer[ETH_ALEN] __aligned(2);
571 struct wiphy_delayed_work tdls_peer_del_work;
572 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
573 struct sk_buff *teardown_skb; /* A copy to send through the AP */
574 spinlock_t teardown_lock; /* To lock changing teardown_skb */
575 bool tdls_wider_bw_prohibited;
576
577 /* WMM-AC TSPEC support */
578 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
579 /* Use a separate work struct so that we can do something here
580 * while the sdata->work is flushing the queues, for example.
581 * otherwise, in scenarios where we hardly get any traffic out
582 * on the BE queue, but there's a lot of VO traffic, we might
583 * get stuck in a downgraded situation and flush takes forever.
584 */
585 struct wiphy_delayed_work tx_tspec_wk;
586
587 /* Information elements from the last transmitted (Re)Association
588 * Request frame.
589 */
590 u8 *assoc_req_ies;
591 size_t assoc_req_ies_len;
592
593 struct wiphy_delayed_work ml_reconf_work;
594 u16 removed_links;
595
596 /* TID-to-link mapping support */
597 struct wiphy_delayed_work ttlm_work;
598 struct ieee80211_adv_ttlm_info ttlm_info;
599 struct wiphy_work teardown_ttlm_work;
600
601 /* dialog token enumerator for neg TTLM request */
602 u8 dialog_token_alloc;
603 struct wiphy_delayed_work neg_ttlm_timeout_work;
604 };
605
606 struct ieee80211_if_ibss {
607 struct timer_list timer;
608 struct wiphy_work csa_connection_drop_work;
609
610 unsigned long last_scan_completed;
611
612 u32 basic_rates;
613
614 bool fixed_bssid;
615 bool fixed_channel;
616 bool privacy;
617
618 bool control_port;
619 bool userspace_handles_dfs;
620
621 u8 bssid[ETH_ALEN] __aligned(2);
622 u8 ssid[IEEE80211_MAX_SSID_LEN];
623 u8 ssid_len, ie_len;
624 u8 *ie;
625 struct cfg80211_chan_def chandef;
626
627 unsigned long ibss_join_req;
628 /* probe response/beacon for IBSS */
629 struct beacon_data __rcu *presp;
630
631 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
632 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
633
634 spinlock_t incomplete_lock;
635 struct list_head incomplete_stations;
636
637 enum {
638 IEEE80211_IBSS_MLME_SEARCH,
639 IEEE80211_IBSS_MLME_JOINED,
640 } state;
641 };
642
643 /**
644 * struct ieee80211_if_ocb - OCB mode state
645 *
646 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
647 * @wrkq_flags: OCB deferred task action
648 * @incomplete_lock: delayed STA insertion lock
649 * @incomplete_stations: list of STAs waiting for delayed insertion
650 * @joined: indication if the interface is connected to an OCB network
651 */
652 struct ieee80211_if_ocb {
653 struct timer_list housekeeping_timer;
654 unsigned long wrkq_flags;
655
656 spinlock_t incomplete_lock;
657 struct list_head incomplete_stations;
658
659 bool joined;
660 };
661
662 /**
663 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
664 *
665 * these declarations define the interface, which enables
666 * vendor-specific mesh synchronization
667 *
668 * @rx_bcn_presp: beacon/probe response was received
669 * @adjust_tsf: TSF adjustment method
670 */
671 struct ieee80211_mesh_sync_ops {
672 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, u16 stype,
673 struct ieee80211_mgmt *mgmt, unsigned int len,
674 const struct ieee80211_meshconf_ie *mesh_cfg,
675 struct ieee80211_rx_status *rx_status);
676
677 /* should be called with beacon_data under RCU read lock */
678 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
679 struct beacon_data *beacon);
680 /* add other framework functions here */
681 };
682
683 struct mesh_csa_settings {
684 struct rcu_head rcu_head;
685 struct cfg80211_csa_settings settings;
686 };
687
688 /**
689 * struct mesh_table - mesh hash table
690 *
691 * @known_gates: list of known mesh gates and their mpaths by the station. The
692 * gate's mpath may or may not be resolved and active.
693 * @gates_lock: protects updates to known_gates
694 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr
695 * @walk_head: linked list containing all mesh_path objects
696 * @walk_lock: lock protecting walk_head
697 * @entries: number of entries in the table
698 */
699 struct mesh_table {
700 struct hlist_head known_gates;
701 spinlock_t gates_lock;
702 struct rhashtable rhead;
703 struct hlist_head walk_head;
704 spinlock_t walk_lock;
705 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */
706 };
707
708 /**
709 * struct mesh_tx_cache - mesh fast xmit header cache
710 *
711 * @rht: hash table containing struct ieee80211_mesh_fast_tx, using skb DA as key
712 * @walk_head: linked list containing all ieee80211_mesh_fast_tx objects
713 * @walk_lock: lock protecting walk_head and rht
714 */
715 struct mesh_tx_cache {
716 struct rhashtable rht;
717 struct hlist_head walk_head;
718 spinlock_t walk_lock;
719 };
720
721 struct ieee80211_if_mesh {
722 struct timer_list housekeeping_timer;
723 struct timer_list mesh_path_timer;
724 struct timer_list mesh_path_root_timer;
725
726 unsigned long wrkq_flags;
727 unsigned long mbss_changed[64 / BITS_PER_LONG];
728
729 bool userspace_handles_dfs;
730
731 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
732 size_t mesh_id_len;
733 /* Active Path Selection Protocol Identifier */
734 u8 mesh_pp_id;
735 /* Active Path Selection Metric Identifier */
736 u8 mesh_pm_id;
737 /* Congestion Control Mode Identifier */
738 u8 mesh_cc_id;
739 /* Synchronization Protocol Identifier */
740 u8 mesh_sp_id;
741 /* Authentication Protocol Identifier */
742 u8 mesh_auth_id;
743 /* Local mesh Sequence Number */
744 u32 sn;
745 /* Last used PREQ ID */
746 u32 preq_id;
747 atomic_t mpaths;
748 /* Timestamp of last SN update */
749 unsigned long last_sn_update;
750 /* Time when it's ok to send next PERR */
751 unsigned long next_perr;
752 /* Timestamp of last PREQ sent */
753 unsigned long last_preq;
754 struct mesh_rmc *rmc;
755 spinlock_t mesh_preq_queue_lock;
756 struct mesh_preq_queue preq_queue;
757 int preq_queue_len;
758 struct mesh_stats mshstats;
759 struct mesh_config mshcfg;
760 atomic_t estab_plinks;
761 atomic_t mesh_seqnum;
762 bool accepting_plinks;
763 int num_gates;
764 struct beacon_data __rcu *beacon;
765 const u8 *ie;
766 u8 ie_len;
767 enum {
768 IEEE80211_MESH_SEC_NONE = 0x0,
769 IEEE80211_MESH_SEC_AUTHED = 0x1,
770 IEEE80211_MESH_SEC_SECURED = 0x2,
771 } security;
772 bool user_mpm;
773 /* Extensible Synchronization Framework */
774 const struct ieee80211_mesh_sync_ops *sync_ops;
775 s64 sync_offset_clockdrift_max;
776 spinlock_t sync_offset_lock;
777 /* mesh power save */
778 enum nl80211_mesh_power_mode nonpeer_pm;
779 int ps_peers_light_sleep;
780 int ps_peers_deep_sleep;
781 struct ps_data ps;
782 /* Channel Switching Support */
783 struct mesh_csa_settings __rcu *csa;
784 enum {
785 IEEE80211_MESH_CSA_ROLE_NONE,
786 IEEE80211_MESH_CSA_ROLE_INIT,
787 IEEE80211_MESH_CSA_ROLE_REPEATER,
788 } csa_role;
789 u8 chsw_ttl;
790 u16 pre_value;
791
792 /* offset from skb->data while building IE */
793 int meshconf_offset;
794
795 struct mesh_table mesh_paths;
796 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */
797 int mesh_paths_generation;
798 int mpp_paths_generation;
799 struct mesh_tx_cache tx_cache;
800 };
801
802 #ifdef CONFIG_MAC80211_MESH
803 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
804 do { (msh)->mshstats.name++; } while (0)
805 #else
806 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
807 do { } while (0)
808 #endif
809
810 /**
811 * enum ieee80211_sub_if_data_flags - virtual interface flags
812 *
813 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
814 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
815 * associated stations and deliver multicast frames both
816 * back to wireless media and to the local net stack.
817 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
818 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
819 * @IEEE80211_SDATA_DISCONNECT_HW_RESTART: Disconnect after hardware restart
820 * recovery
821 */
822 enum ieee80211_sub_if_data_flags {
823 IEEE80211_SDATA_ALLMULTI = BIT(0),
824 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
825 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
826 IEEE80211_SDATA_IN_DRIVER = BIT(5),
827 IEEE80211_SDATA_DISCONNECT_HW_RESTART = BIT(6),
828 };
829
830 /**
831 * enum ieee80211_sdata_state_bits - virtual interface state bits
832 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
833 * mirrors netif_running() but is separate for interface type
834 * change handling while the interface is up
835 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
836 * mode, so queues are stopped
837 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
838 * to offchannel, reset when offchannel returns
839 */
840 enum ieee80211_sdata_state_bits {
841 SDATA_STATE_RUNNING,
842 SDATA_STATE_OFFCHANNEL,
843 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
844 };
845
846 /**
847 * enum ieee80211_chanctx_mode - channel context configuration mode
848 *
849 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
850 * multiple interfaces
851 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
852 * only by a single interface. This can be used for example for
853 * non-fixed channel IBSS.
854 */
855 enum ieee80211_chanctx_mode {
856 IEEE80211_CHANCTX_SHARED,
857 IEEE80211_CHANCTX_EXCLUSIVE
858 };
859
860 /**
861 * enum ieee80211_chanctx_replace_state - channel context replacement state
862 *
863 * This is used for channel context in-place reservations that require channel
864 * context switch/swap.
865 *
866 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
867 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
868 * by a (not yet registered) channel context pointed by %replace_ctx.
869 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
870 * replaces an existing channel context pointed to by %replace_ctx.
871 */
872 enum ieee80211_chanctx_replace_state {
873 IEEE80211_CHANCTX_REPLACE_NONE,
874 IEEE80211_CHANCTX_WILL_BE_REPLACED,
875 IEEE80211_CHANCTX_REPLACES_OTHER,
876 };
877
878 struct ieee80211_chanctx {
879 struct list_head list;
880 struct rcu_head rcu_head;
881
882 struct list_head assigned_links;
883 struct list_head reserved_links;
884
885 enum ieee80211_chanctx_replace_state replace_state;
886 struct ieee80211_chanctx *replace_ctx;
887
888 enum ieee80211_chanctx_mode mode;
889 bool driver_present;
890
891 /* temporary data for search algorithm etc. */
892 struct ieee80211_chan_req req;
893
894 struct ieee80211_chanctx_conf conf;
895 };
896
897 struct mac80211_qos_map {
898 struct cfg80211_qos_map qos_map;
899 struct rcu_head rcu_head;
900 };
901
902 enum txq_info_flags {
903 IEEE80211_TXQ_STOP,
904 IEEE80211_TXQ_AMPDU,
905 IEEE80211_TXQ_NO_AMSDU,
906 IEEE80211_TXQ_DIRTY,
907 };
908
909 /**
910 * struct txq_info - per tid queue
911 *
912 * @tin: contains packets split into multiple flows
913 * @def_cvars: codel vars for the @tin's default_flow
914 * @cstats: code statistics for this queue
915 * @frags: used to keep fragments created after dequeue
916 * @schedule_order: used with ieee80211_local->active_txqs
917 * @schedule_round: counter to prevent infinite loops on TXQ scheduling
918 * @flags: TXQ flags from &enum txq_info_flags
919 * @txq: the driver visible part
920 */
921 struct txq_info {
922 struct fq_tin tin;
923 struct codel_vars def_cvars;
924 struct codel_stats cstats;
925
926 u16 schedule_round;
927 struct list_head schedule_order;
928
929 struct sk_buff_head frags;
930
931 unsigned long flags;
932
933 /* keep last! */
934 struct ieee80211_txq txq;
935 };
936
937 struct ieee80211_if_mntr {
938 u32 flags;
939 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
940
941 struct list_head list;
942 };
943
944 /**
945 * struct ieee80211_if_nan - NAN state
946 *
947 * @conf: current NAN configuration
948 * @func_lock: lock for @func_inst_ids
949 * @function_inst_ids: a bitmap of available instance_id's
950 */
951 struct ieee80211_if_nan {
952 struct cfg80211_nan_conf conf;
953
954 /* protects function_inst_ids */
955 spinlock_t func_lock;
956 struct idr function_inst_ids;
957 };
958
959 struct ieee80211_link_data_managed {
960 u8 bssid[ETH_ALEN] __aligned(2);
961
962 u8 dtim_period;
963 enum ieee80211_smps_mode req_smps, /* requested smps mode */
964 driver_smps_mode; /* smps mode request */
965
966 struct ieee80211_conn_settings conn;
967
968 s16 p2p_noa_index;
969
970 bool tdls_chan_switch_prohibited;
971
972 bool have_beacon;
973 bool tracking_signal_avg;
974 bool disable_wmm_tracking;
975 bool operating_11g_mode;
976
977 bool csa_waiting_bcn;
978 bool csa_ignored_same_chan;
979 bool csa_blocked_tx;
980 struct wiphy_delayed_work chswitch_work;
981
982 struct wiphy_work request_smps_work;
983 /* used to reconfigure hardware SM PS */
984 struct wiphy_work recalc_smps;
985
986 bool beacon_crc_valid;
987 u32 beacon_crc;
988 struct ewma_beacon_signal ave_beacon_signal;
989 int last_ave_beacon_signal;
990
991 /*
992 * Number of Beacon frames used in ave_beacon_signal. This can be used
993 * to avoid generating less reliable cqm events that would be based
994 * only on couple of received frames.
995 */
996 unsigned int count_beacon_signal;
997
998 /* Number of times beacon loss was invoked. */
999 unsigned int beacon_loss_count;
1000
1001 /*
1002 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
1003 * that triggered a cqm event. 0 indicates that no event has been
1004 * generated for the current association.
1005 */
1006 int last_cqm_event_signal;
1007
1008 int wmm_last_param_set;
1009 int mu_edca_last_param_set;
1010
1011 u8 bss_param_ch_cnt;
1012 };
1013
1014 struct ieee80211_link_data_ap {
1015 struct beacon_data __rcu *beacon;
1016 struct probe_resp __rcu *probe_resp;
1017 struct fils_discovery_data __rcu *fils_discovery;
1018 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp;
1019
1020 /* to be used after channel switch. */
1021 struct cfg80211_beacon_data *next_beacon;
1022 };
1023
1024 struct ieee80211_link_data {
1025 struct ieee80211_sub_if_data *sdata;
1026 unsigned int link_id;
1027
1028 struct list_head assigned_chanctx_list; /* protected by wiphy mutex */
1029 struct list_head reserved_chanctx_list; /* protected by wiphy mutex */
1030
1031 /* multicast keys only */
1032 struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS +
1033 NUM_DEFAULT_MGMT_KEYS +
1034 NUM_DEFAULT_BEACON_KEYS];
1035 struct ieee80211_key __rcu *default_multicast_key;
1036 struct ieee80211_key __rcu *default_mgmt_key;
1037 struct ieee80211_key __rcu *default_beacon_key;
1038
1039 struct wiphy_work csa_finalize_work;
1040
1041 bool operating_11g_mode;
1042
1043 struct ieee80211_chan_req csa_chanreq;
1044
1045 struct wiphy_work color_change_finalize_work;
1046 struct delayed_work color_collision_detect_work;
1047 u64 color_bitmap;
1048
1049 /* context reservation -- protected with wiphy mutex */
1050 struct ieee80211_chanctx *reserved_chanctx;
1051 struct ieee80211_chan_req reserved;
1052 bool reserved_radar_required;
1053 bool reserved_ready;
1054
1055 u8 needed_rx_chains;
1056 enum ieee80211_smps_mode smps_mode;
1057
1058 int user_power_level; /* in dBm */
1059 int ap_power_level; /* in dBm */
1060
1061 bool radar_required;
1062 struct wiphy_delayed_work dfs_cac_timer_work;
1063
1064 union {
1065 struct ieee80211_link_data_managed mgd;
1066 struct ieee80211_link_data_ap ap;
1067 } u;
1068
1069 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
1070
1071 struct ieee80211_bss_conf *conf;
1072
1073 #ifdef CONFIG_MAC80211_DEBUGFS
1074 struct dentry *debugfs_dir;
1075 #endif
1076 };
1077
1078 struct ieee80211_sub_if_data {
1079 struct list_head list;
1080
1081 struct wireless_dev wdev;
1082
1083 /* keys */
1084 struct list_head key_list;
1085
1086 /* count for keys needing tailroom space allocation */
1087 int crypto_tx_tailroom_needed_cnt;
1088 int crypto_tx_tailroom_pending_dec;
1089 struct wiphy_delayed_work dec_tailroom_needed_wk;
1090
1091 struct net_device *dev;
1092 struct ieee80211_local *local;
1093
1094 unsigned int flags;
1095
1096 unsigned long state;
1097
1098 bool csa_blocked_queues;
1099
1100 char name[IFNAMSIZ];
1101
1102 struct ieee80211_fragment_cache frags;
1103
1104 /* TID bitmap for NoAck policy */
1105 u16 noack_map;
1106
1107 /* bit field of ACM bits (BIT(802.1D tag)) */
1108 u8 wmm_acm;
1109
1110 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS];
1111 struct ieee80211_key __rcu *default_unicast_key;
1112
1113 u16 sequence_number;
1114 u16 mld_mcast_seq;
1115 __be16 control_port_protocol;
1116 bool control_port_no_encrypt;
1117 bool control_port_no_preauth;
1118 bool control_port_over_nl80211;
1119
1120 atomic_t num_tx_queued;
1121 struct mac80211_qos_map __rcu *qos_map;
1122
1123 struct wiphy_work work;
1124 struct sk_buff_head skb_queue;
1125 struct sk_buff_head status_queue;
1126
1127 /*
1128 * AP this belongs to: self in AP mode and
1129 * corresponding AP in VLAN mode, NULL for
1130 * all others (might be needed later in IBSS)
1131 */
1132 struct ieee80211_if_ap *bss;
1133
1134 /* bitmap of allowed (non-MCS) rate indexes for rate control */
1135 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
1136
1137 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
1138 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
1139
1140 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
1141 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
1142
1143 /* Beacon frame (non-MCS) rate (as a bitmap) */
1144 u32 beacon_rateidx_mask[NUM_NL80211_BANDS];
1145 bool beacon_rate_set;
1146
1147 union {
1148 struct ieee80211_if_ap ap;
1149 struct ieee80211_if_vlan vlan;
1150 struct ieee80211_if_managed mgd;
1151 struct ieee80211_if_ibss ibss;
1152 struct ieee80211_if_mesh mesh;
1153 struct ieee80211_if_ocb ocb;
1154 struct ieee80211_if_mntr mntr;
1155 struct ieee80211_if_nan nan;
1156 } u;
1157
1158 struct ieee80211_link_data deflink;
1159 struct ieee80211_link_data __rcu *link[IEEE80211_MLD_MAX_NUM_LINKS];
1160
1161 /* for ieee80211_set_active_links_async() */
1162 struct wiphy_work activate_links_work;
1163 u16 desired_active_links;
1164
1165 u16 restart_active_links;
1166
1167 #ifdef CONFIG_MAC80211_DEBUGFS
1168 struct {
1169 struct dentry *subdir_stations;
1170 struct dentry *default_unicast_key;
1171 struct dentry *default_multicast_key;
1172 struct dentry *default_mgmt_key;
1173 struct dentry *default_beacon_key;
1174 } debugfs;
1175 #endif
1176
1177 /* must be last, dynamically sized area in this! */
1178 struct ieee80211_vif vif;
1179 };
1180
1181 static inline
vif_to_sdata(struct ieee80211_vif * p)1182 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
1183 {
1184 return container_of(p, struct ieee80211_sub_if_data, vif);
1185 }
1186
1187 #define sdata_dereference(p, sdata) \
1188 wiphy_dereference(sdata->local->hw.wiphy, p)
1189
1190 #define for_each_sdata_link(_local, _link) \
1191 /* outer loop just to define the variables ... */ \
1192 for (struct ieee80211_sub_if_data *___sdata = NULL; \
1193 !___sdata; \
1194 ___sdata = (void *)~0 /* always stop */) \
1195 list_for_each_entry(___sdata, &(_local)->interfaces, list) \
1196 if (ieee80211_sdata_running(___sdata)) \
1197 for (int ___link_id = 0; \
1198 ___link_id < ARRAY_SIZE(___sdata->link); \
1199 ___link_id++) \
1200 if ((_link = wiphy_dereference((local)->hw.wiphy, \
1201 ___sdata->link[___link_id])))
1202
1203 static inline int
ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems * elems,struct cfg80211_rnr_elems * rnr_elems,u8 i)1204 ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems,
1205 struct cfg80211_rnr_elems *rnr_elems,
1206 u8 i)
1207 {
1208 int len = 0;
1209
1210 if (!elems || !elems->cnt || i > elems->cnt)
1211 return 0;
1212
1213 if (i < elems->cnt) {
1214 len = elems->elem[i].len;
1215 if (rnr_elems) {
1216 len += rnr_elems->elem[i].len;
1217 for (i = elems->cnt; i < rnr_elems->cnt; i++)
1218 len += rnr_elems->elem[i].len;
1219 }
1220 return len;
1221 }
1222
1223 /* i == elems->cnt, calculate total length of all MBSSID elements */
1224 for (i = 0; i < elems->cnt; i++)
1225 len += elems->elem[i].len;
1226
1227 if (rnr_elems) {
1228 for (i = 0; i < rnr_elems->cnt; i++)
1229 len += rnr_elems->elem[i].len;
1230 }
1231
1232 return len;
1233 }
1234
1235 enum {
1236 IEEE80211_RX_MSG = 1,
1237 IEEE80211_TX_STATUS_MSG = 2,
1238 };
1239
1240 enum queue_stop_reason {
1241 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1242 IEEE80211_QUEUE_STOP_REASON_PS,
1243 IEEE80211_QUEUE_STOP_REASON_CSA,
1244 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1245 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1246 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1247 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1248 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1249 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1250 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1251 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE,
1252
1253 IEEE80211_QUEUE_STOP_REASONS,
1254 };
1255
1256 #ifdef CONFIG_MAC80211_LEDS
1257 struct tpt_led_trigger {
1258 char name[32];
1259 const struct ieee80211_tpt_blink *blink_table;
1260 unsigned int blink_table_len;
1261 struct timer_list timer;
1262 struct ieee80211_local *local;
1263 unsigned long prev_traffic;
1264 unsigned long tx_bytes, rx_bytes;
1265 unsigned int active, want;
1266 bool running;
1267 };
1268 #endif
1269
1270 /**
1271 * enum mac80211_scan_flags - currently active scan mode
1272 *
1273 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1274 * well be on the operating channel
1275 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1276 * determine if we are on the operating channel or not
1277 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1278 * channel. This should not interrupt normal traffic.
1279 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1280 * that the scan completed.
1281 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1282 * a scan complete for an aborted scan.
1283 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1284 * cancelled.
1285 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR
1286 * and could send a probe request after receiving a beacon.
1287 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request
1288 */
1289 enum mac80211_scan_flags {
1290 SCAN_SW_SCANNING,
1291 SCAN_HW_SCANNING,
1292 SCAN_ONCHANNEL_SCANNING,
1293 SCAN_COMPLETED,
1294 SCAN_ABORTED,
1295 SCAN_HW_CANCELLED,
1296 SCAN_BEACON_WAIT,
1297 SCAN_BEACON_DONE,
1298 };
1299
1300 /**
1301 * enum mac80211_scan_state - scan state machine states
1302 *
1303 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1304 * determines if we should keep on scanning or switch back to the
1305 * operating channel
1306 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1307 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1308 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1309 * send out data
1310 * @SCAN_RESUME: Resume the scan and scan the next channel
1311 * @SCAN_ABORT: Abort the scan and go back to operating channel
1312 */
1313 enum mac80211_scan_state {
1314 SCAN_DECISION,
1315 SCAN_SET_CHANNEL,
1316 SCAN_SEND_PROBE,
1317 SCAN_SUSPEND,
1318 SCAN_RESUME,
1319 SCAN_ABORT,
1320 };
1321
1322 DECLARE_STATIC_KEY_FALSE(aql_disable);
1323
1324 struct ieee80211_local {
1325 /* embed the driver visible part.
1326 * don't cast (use the static inlines below), but we keep
1327 * it first anyway so they become a no-op */
1328 struct ieee80211_hw hw;
1329
1330 struct fq fq;
1331 struct codel_vars *cvars;
1332 struct codel_params cparams;
1333
1334 /* protects active_txqs and txqi->schedule_order */
1335 spinlock_t active_txq_lock[IEEE80211_NUM_ACS];
1336 struct list_head active_txqs[IEEE80211_NUM_ACS];
1337 u16 schedule_round[IEEE80211_NUM_ACS];
1338
1339 /* serializes ieee80211_handle_wake_tx_queue */
1340 spinlock_t handle_wake_tx_queue_lock;
1341
1342 u16 airtime_flags;
1343 u32 aql_txq_limit_low[IEEE80211_NUM_ACS];
1344 u32 aql_txq_limit_high[IEEE80211_NUM_ACS];
1345 u32 aql_threshold;
1346 atomic_t aql_total_pending_airtime;
1347 atomic_t aql_ac_pending_airtime[IEEE80211_NUM_ACS];
1348
1349 const struct ieee80211_ops *ops;
1350
1351 /*
1352 * private workqueue to mac80211. mac80211 makes this accessible
1353 * via ieee80211_queue_work()
1354 */
1355 struct workqueue_struct *workqueue;
1356
1357 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1358 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1359 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1360 spinlock_t queue_stop_reason_lock;
1361
1362 int open_count;
1363 int monitors, cooked_mntrs;
1364 /* number of interfaces with corresponding FIF_ flags */
1365 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1366 fif_probe_req;
1367 bool probe_req_reg;
1368 bool rx_mcast_action_reg;
1369 unsigned int filter_flags; /* FIF_* */
1370
1371 bool wiphy_ciphers_allocated;
1372
1373 struct cfg80211_chan_def dflt_chandef;
1374 bool emulate_chanctx;
1375
1376 /* protects the aggregated multicast list and filter calls */
1377 spinlock_t filter_lock;
1378
1379 /* used for uploading changed mc list */
1380 struct wiphy_work reconfig_filter;
1381
1382 /* aggregated multicast list */
1383 struct netdev_hw_addr_list mc_list;
1384
1385 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1386
1387 /*
1388 * suspended is true if we finished all the suspend _and_ we have
1389 * not yet come up from resume. This is to be used by mac80211
1390 * to ensure driver sanity during suspend and mac80211's own
1391 * sanity. It can eventually be used for WoW as well.
1392 */
1393 bool suspended;
1394
1395 /* suspending is true during the whole suspend process */
1396 bool suspending;
1397
1398 /*
1399 * Resuming is true while suspended, but when we're reprogramming the
1400 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1401 * again even though some other parts of the stack are still suspended
1402 * and we still drop received frames to avoid waking the stack.
1403 */
1404 bool resuming;
1405
1406 /*
1407 * quiescing is true during the suspend process _only_ to
1408 * ease timer cancelling etc.
1409 */
1410 bool quiescing;
1411
1412 /* device is started */
1413 bool started;
1414
1415 /* device is during a HW reconfig */
1416 bool in_reconfig;
1417
1418 /* reconfiguration failed ... suppress some warnings etc. */
1419 bool reconfig_failure;
1420
1421 /* wowlan is enabled -- don't reconfig on resume */
1422 bool wowlan;
1423
1424 struct wiphy_work radar_detected_work;
1425
1426 /* number of RX chains the hardware has */
1427 u8 rx_chains;
1428
1429 /* bitmap of which sbands were copied */
1430 u8 sband_allocated;
1431
1432 int tx_headroom; /* required headroom for hardware/radiotap */
1433
1434 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1435 * added to skb_queue will be processed, but frames in
1436 * skb_queue_unreliable may be dropped if the total length of these
1437 * queues increases over the limit. */
1438 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1439 struct tasklet_struct tasklet;
1440 struct sk_buff_head skb_queue;
1441 struct sk_buff_head skb_queue_unreliable;
1442
1443 spinlock_t rx_path_lock;
1444
1445 /* Station data */
1446 /*
1447 * The list, hash table and counter are protected
1448 * by the wiphy mutex, reads are done with RCU.
1449 */
1450 spinlock_t tim_lock;
1451 unsigned long num_sta;
1452 struct list_head sta_list;
1453 struct rhltable sta_hash;
1454 struct rhltable link_sta_hash;
1455 struct timer_list sta_cleanup;
1456 int sta_generation;
1457
1458 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1459 struct tasklet_struct tx_pending_tasklet;
1460 struct tasklet_struct wake_txqs_tasklet;
1461
1462 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1463
1464 /* number of interfaces with allmulti RX */
1465 atomic_t iff_allmultis;
1466
1467 struct rate_control_ref *rate_ctrl;
1468
1469 struct arc4_ctx wep_tx_ctx;
1470 struct arc4_ctx wep_rx_ctx;
1471 u32 wep_iv;
1472
1473 /* see iface.c */
1474 struct list_head interfaces;
1475 struct list_head mon_list; /* only that are IFF_UP && !cooked */
1476 struct mutex iflist_mtx;
1477
1478 /* Scanning and BSS list */
1479 unsigned long scanning;
1480 struct cfg80211_ssid scan_ssid;
1481 struct cfg80211_scan_request *int_scan_req;
1482 struct cfg80211_scan_request __rcu *scan_req;
1483 struct ieee80211_scan_request *hw_scan_req;
1484 struct cfg80211_chan_def scan_chandef;
1485 enum nl80211_band hw_scan_band;
1486 int scan_channel_idx;
1487 int scan_ies_len;
1488 int hw_scan_ies_bufsize;
1489 struct cfg80211_scan_info scan_info;
1490
1491 struct wiphy_work sched_scan_stopped_work;
1492 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1493 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1494 u8 scan_addr[ETH_ALEN];
1495
1496 unsigned long leave_oper_channel_time;
1497 enum mac80211_scan_state next_scan_state;
1498 struct wiphy_delayed_work scan_work;
1499 struct ieee80211_sub_if_data __rcu *scan_sdata;
1500
1501 /* Temporary remain-on-channel for off-channel operations */
1502 struct ieee80211_channel *tmp_channel;
1503
1504 /* channel contexts */
1505 struct list_head chanctx_list;
1506
1507 #ifdef CONFIG_MAC80211_LEDS
1508 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1509 struct led_trigger tpt_led;
1510 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1511 atomic_t radio_led_active, tpt_led_active;
1512 struct tpt_led_trigger *tpt_led_trigger;
1513 #endif
1514
1515 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1516 /* SNMP counters */
1517 /* dot11CountersTable */
1518 u32 dot11TransmittedFragmentCount;
1519 u32 dot11MulticastTransmittedFrameCount;
1520 u32 dot11FailedCount;
1521 u32 dot11RetryCount;
1522 u32 dot11MultipleRetryCount;
1523 u32 dot11FrameDuplicateCount;
1524 u32 dot11ReceivedFragmentCount;
1525 u32 dot11MulticastReceivedFrameCount;
1526 u32 dot11TransmittedFrameCount;
1527
1528 /* TX/RX handler statistics */
1529 unsigned int tx_handlers_drop;
1530 unsigned int tx_handlers_queued;
1531 unsigned int tx_handlers_drop_wep;
1532 unsigned int tx_handlers_drop_not_assoc;
1533 unsigned int tx_handlers_drop_unauth_port;
1534 unsigned int rx_handlers_drop;
1535 unsigned int rx_handlers_queued;
1536 unsigned int rx_handlers_drop_nullfunc;
1537 unsigned int rx_handlers_drop_defrag;
1538 unsigned int tx_expand_skb_head;
1539 unsigned int tx_expand_skb_head_cloned;
1540 unsigned int rx_expand_skb_head_defrag;
1541 unsigned int rx_handlers_fragments;
1542 unsigned int tx_status_drop;
1543 #define I802_DEBUG_INC(c) (c)++
1544 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1545 #define I802_DEBUG_INC(c) do { } while (0)
1546 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1547
1548
1549 int total_ps_buffered; /* total number of all buffered unicast and
1550 * multicast packets for power saving stations
1551 */
1552
1553 bool pspolling;
1554 /*
1555 * PS can only be enabled when we have exactly one managed
1556 * interface (and monitors) in PS, this then points there.
1557 */
1558 struct ieee80211_sub_if_data *ps_sdata;
1559 struct wiphy_work dynamic_ps_enable_work;
1560 struct wiphy_work dynamic_ps_disable_work;
1561 struct timer_list dynamic_ps_timer;
1562 struct notifier_block ifa_notifier;
1563 struct notifier_block ifa6_notifier;
1564
1565 /*
1566 * The dynamic ps timeout configured from user space via WEXT -
1567 * this will override whatever chosen by mac80211 internally.
1568 */
1569 int dynamic_ps_forced_timeout;
1570
1571 int user_power_level; /* in dBm, for all interfaces */
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 ieee80211_chan_req monitor_chanreq;
1600
1601 /* extended capabilities provided by mac80211 */
1602 u8 ext_capa[8];
1603
1604 bool wbrf_supported;
1605 };
1606
1607 static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(const struct net_device * dev)1608 IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev)
1609 {
1610 return netdev_priv(dev);
1611 }
1612
1613 static inline struct ieee80211_sub_if_data *
IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev * wdev)1614 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1615 {
1616 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1617 }
1618
1619 static inline struct ieee80211_supported_band *
ieee80211_get_sband(struct ieee80211_sub_if_data * sdata)1620 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1621 {
1622 struct ieee80211_local *local = sdata->local;
1623 struct ieee80211_chanctx_conf *chanctx_conf;
1624 enum nl80211_band band;
1625
1626 WARN_ON(ieee80211_vif_is_mld(&sdata->vif));
1627
1628 rcu_read_lock();
1629 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
1630
1631 if (!chanctx_conf) {
1632 rcu_read_unlock();
1633 return NULL;
1634 }
1635
1636 band = chanctx_conf->def.chan->band;
1637 rcu_read_unlock();
1638
1639 return local->hw.wiphy->bands[band];
1640 }
1641
1642 static inline struct ieee80211_supported_band *
ieee80211_get_link_sband(struct ieee80211_link_data * link)1643 ieee80211_get_link_sband(struct ieee80211_link_data *link)
1644 {
1645 struct ieee80211_local *local = link->sdata->local;
1646 struct ieee80211_chanctx_conf *chanctx_conf;
1647 enum nl80211_band band;
1648
1649 rcu_read_lock();
1650 chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
1651 if (!chanctx_conf) {
1652 rcu_read_unlock();
1653 return NULL;
1654 }
1655
1656 band = chanctx_conf->def.chan->band;
1657 rcu_read_unlock();
1658
1659 return local->hw.wiphy->bands[band];
1660 }
1661
1662 /* this struct holds the value parsing from channel switch IE */
1663 struct ieee80211_csa_ie {
1664 struct ieee80211_chan_req chanreq;
1665 u8 mode;
1666 u8 count;
1667 u8 ttl;
1668 u16 pre_value;
1669 u16 reason_code;
1670 u32 max_switch_time;
1671 };
1672
1673 enum ieee80211_elems_parse_error {
1674 IEEE80211_PARSE_ERR_INVALID_END = BIT(0),
1675 IEEE80211_PARSE_ERR_DUP_ELEM = BIT(1),
1676 IEEE80211_PARSE_ERR_BAD_ELEM_SIZE = BIT(2),
1677 IEEE80211_PARSE_ERR_UNEXPECTED_ELEM = BIT(3),
1678 IEEE80211_PARSE_ERR_DUP_NEST_ML_BASIC = BIT(4),
1679 };
1680
1681 /* Parsed Information Elements */
1682 struct ieee802_11_elems {
1683 const u8 *ie_start;
1684 size_t total_len;
1685 u32 crc;
1686
1687 /* pointers to IEs */
1688 const struct ieee80211_tdls_lnkie *lnk_id;
1689 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1690 const u8 *ext_capab;
1691 const u8 *ssid;
1692 const u8 *supp_rates;
1693 const u8 *ds_params;
1694 const struct ieee80211_tim_ie *tim;
1695 const u8 *rsn;
1696 const u8 *rsnx;
1697 const u8 *erp_info;
1698 const u8 *ext_supp_rates;
1699 const u8 *wmm_info;
1700 const u8 *wmm_param;
1701 const struct ieee80211_ht_cap *ht_cap_elem;
1702 const struct ieee80211_ht_operation *ht_operation;
1703 const struct ieee80211_vht_cap *vht_cap_elem;
1704 const struct ieee80211_vht_operation *vht_operation;
1705 const struct ieee80211_meshconf_ie *mesh_config;
1706 const u8 *he_cap;
1707 const struct ieee80211_he_operation *he_operation;
1708 const struct ieee80211_he_spr *he_spr;
1709 const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1710 const struct ieee80211_he_6ghz_capa *he_6ghz_capa;
1711 const struct ieee80211_tx_pwr_env *tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT];
1712 const u8 *uora_element;
1713 const u8 *mesh_id;
1714 const u8 *peering;
1715 const __le16 *awake_window;
1716 const u8 *preq;
1717 const u8 *prep;
1718 const u8 *perr;
1719 const struct ieee80211_rann_ie *rann;
1720 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1721 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1722 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1723 const u8 *max_channel_switch_time;
1724 const u8 *country_elem;
1725 const u8 *pwr_constr_elem;
1726 const u8 *cisco_dtpc_elem;
1727 const struct ieee80211_timeout_interval_ie *timeout_int;
1728 const u8 *opmode_notif;
1729 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1730 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1731 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1732 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
1733 const struct ieee80211_bssid_index *bssid_index;
1734 u8 max_bssid_indicator;
1735 u8 dtim_count;
1736 u8 dtim_period;
1737 const struct ieee80211_addba_ext_ie *addba_ext_ie;
1738 const struct ieee80211_s1g_cap *s1g_capab;
1739 const struct ieee80211_s1g_oper_ie *s1g_oper;
1740 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat;
1741 const struct ieee80211_aid_response_ie *aid_resp;
1742 const struct ieee80211_eht_cap_elem *eht_cap;
1743 const struct ieee80211_eht_operation *eht_operation;
1744 const struct ieee80211_multi_link_elem *ml_basic;
1745 const struct ieee80211_multi_link_elem *ml_reconf;
1746 const struct ieee80211_bandwidth_indication *bandwidth_indication;
1747 const struct ieee80211_ttlm_elem *ttlm[IEEE80211_TTLM_MAX_CNT];
1748
1749 /* length of them, respectively */
1750 u8 ext_capab_len;
1751 u8 ssid_len;
1752 u8 supp_rates_len;
1753 u8 tim_len;
1754 u8 rsn_len;
1755 u8 rsnx_len;
1756 u8 ext_supp_rates_len;
1757 u8 wmm_info_len;
1758 u8 wmm_param_len;
1759 u8 he_cap_len;
1760 u8 mesh_id_len;
1761 u8 peering_len;
1762 u8 preq_len;
1763 u8 prep_len;
1764 u8 perr_len;
1765 u8 country_elem_len;
1766 u8 bssid_index_len;
1767 u8 tx_pwr_env_len[IEEE80211_TPE_MAX_IE_COUNT];
1768 u8 tx_pwr_env_num;
1769 u8 eht_cap_len;
1770
1771 /* mult-link element can be de-fragmented and thus u8 is not sufficient */
1772 size_t ml_basic_len;
1773 size_t ml_reconf_len;
1774
1775 u8 ttlm_num;
1776
1777 /*
1778 * store the per station profile pointer and length in case that the
1779 * parsing also handled Multi-Link element parsing for a specific link
1780 * ID.
1781 */
1782 struct ieee80211_mle_per_sta_profile *prof;
1783 size_t sta_prof_len;
1784
1785 /* whether/which parse error occurred while retrieving these elements */
1786 u8 parse_error;
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 return status->flag & RX_FLAG_MACTIME;
1811 }
1812
1813 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1814 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1815
1816 /* This function returns the number of multicast stations connected to this
1817 * interface. It returns -1 if that number is not tracked, that is for netdevs
1818 * not in AP or AP_VLAN mode or when using 4addr.
1819 */
1820 static inline int
ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data * sdata)1821 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1822 {
1823 if (sdata->vif.type == NL80211_IFTYPE_AP)
1824 return atomic_read(&sdata->u.ap.num_mcast_sta);
1825 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1826 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1827 return -1;
1828 }
1829
1830 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1831 struct ieee80211_rx_status *status,
1832 unsigned int mpdu_len,
1833 unsigned int mpdu_offset);
1834 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1835 int ieee80211_hw_conf_chan(struct ieee80211_local *local);
1836 void ieee80211_hw_conf_init(struct ieee80211_local *local);
1837 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1838 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1839 u64 changed);
1840 void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata,
1841 u64 changed);
1842 void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata,
1843 struct ieee80211_link_data *link,
1844 u64 changed);
1845 void ieee80211_configure_filter(struct ieee80211_local *local);
1846 u64 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1847
1848 void ieee80211_handle_queued_frames(struct ieee80211_local *local);
1849
1850 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1851 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1852 u64 *cookie, gfp_t gfp);
1853
1854 void ieee80211_check_fast_rx(struct sta_info *sta);
1855 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1856 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1857 void ieee80211_clear_fast_rx(struct sta_info *sta);
1858
1859 bool ieee80211_is_our_addr(struct ieee80211_sub_if_data *sdata,
1860 const u8 *addr, int *out_link_id);
1861
1862 /* STA code */
1863 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1864 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1865 struct cfg80211_auth_request *req);
1866 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1867 struct cfg80211_assoc_request *req);
1868 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1869 struct cfg80211_deauth_request *req);
1870 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1871 struct cfg80211_disassoc_request *req);
1872 void ieee80211_send_pspoll(struct ieee80211_local *local,
1873 struct ieee80211_sub_if_data *sdata);
1874 void ieee80211_recalc_ps(struct ieee80211_local *local);
1875 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1876 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1877 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1878 struct sk_buff *skb);
1879 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
1880 struct sk_buff *skb);
1881 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1882 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1883 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1884 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1885 __le16 fc, bool acked);
1886 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1887 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1888 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1889 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
1890 u8 reason, bool tx);
1891 void ieee80211_mgd_setup_link(struct ieee80211_link_data *link);
1892 void ieee80211_mgd_stop_link(struct ieee80211_link_data *link);
1893 void ieee80211_mgd_set_link_qos_params(struct ieee80211_link_data *link);
1894
1895 /* IBSS code */
1896 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1897 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1898 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1899 const u8 *bssid, const u8 *addr, u32 supp_rates);
1900 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1901 struct cfg80211_ibss_params *params);
1902 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1903 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1904 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1905 struct sk_buff *skb);
1906 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1907 struct cfg80211_csa_settings *csa_settings,
1908 u64 *changed);
1909 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata,
1910 u64 *changed);
1911 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1912
1913 /* OCB code */
1914 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1915 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1916 const u8 *bssid, const u8 *addr, u32 supp_rates);
1917 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1918 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1919 struct ocb_setup *setup);
1920 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1921
1922 /* mesh code */
1923 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1924 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1925 struct sk_buff *skb);
1926 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1927 struct cfg80211_csa_settings *csa_settings,
1928 u64 *changed);
1929 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata,
1930 u64 *changed);
1931
1932 /* scan/BSS handling */
1933 void ieee80211_scan_work(struct wiphy *wiphy, struct wiphy_work *work);
1934 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1935 const u8 *ssid, u8 ssid_len,
1936 struct ieee80211_channel **channels,
1937 unsigned int n_channels);
1938 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1939 struct cfg80211_scan_request *req);
1940 void ieee80211_scan_cancel(struct ieee80211_local *local);
1941 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1942 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1943
1944 void ieee80211_inform_bss(struct wiphy *wiphy, struct cfg80211_bss *bss,
1945 const struct cfg80211_bss_ies *ies, void *data);
1946
1947 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1948 struct ieee80211_bss *
1949 ieee80211_bss_info_update(struct ieee80211_local *local,
1950 struct ieee80211_rx_status *rx_status,
1951 struct ieee80211_mgmt *mgmt,
1952 size_t len,
1953 struct ieee80211_channel *channel);
1954 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1955 struct ieee80211_bss *bss);
1956
1957 /* scheduled scan handling */
1958 int
1959 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1960 struct cfg80211_sched_scan_request *req);
1961 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1962 struct cfg80211_sched_scan_request *req);
1963 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1964 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1965 void ieee80211_sched_scan_stopped_work(struct wiphy *wiphy,
1966 struct wiphy_work *work);
1967
1968 /* off-channel/mgmt-tx */
1969 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1970 void ieee80211_offchannel_return(struct ieee80211_local *local);
1971 void ieee80211_roc_setup(struct ieee80211_local *local);
1972 void ieee80211_start_next_roc(struct ieee80211_local *local);
1973 void ieee80211_roc_purge(struct ieee80211_local *local,
1974 struct ieee80211_sub_if_data *sdata);
1975 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1976 struct ieee80211_channel *chan,
1977 unsigned int duration, u64 *cookie);
1978 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1979 struct wireless_dev *wdev, u64 cookie);
1980 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1981 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1982 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1983 struct wireless_dev *wdev, u64 cookie);
1984
1985 /* channel switch handling */
1986 void ieee80211_csa_finalize_work(struct wiphy *wiphy, struct wiphy_work *work);
1987 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1988 struct cfg80211_csa_settings *params);
1989
1990 /* color change handling */
1991 void ieee80211_color_change_finalize_work(struct wiphy *wiphy,
1992 struct wiphy_work *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);
ieee80211_vif_clear_links(struct ieee80211_sub_if_data * sdata)2042 static inline void ieee80211_vif_clear_links(struct ieee80211_sub_if_data *sdata)
2043 {
2044 ieee80211_vif_set_links(sdata, 0, 0);
2045 }
2046
2047 /* tx handling */
2048 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
2049 void ieee80211_tx_pending(struct tasklet_struct *t);
2050 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
2051 struct net_device *dev);
2052 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
2053 struct net_device *dev);
2054 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb,
2055 struct net_device *dev);
2056 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
2057 struct net_device *dev,
2058 u32 info_flags,
2059 u32 ctrl_flags,
2060 u64 *cookie);
2061 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
2062 struct sk_buff_head *skbs);
2063 struct sk_buff *
2064 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
2065 struct sk_buff *skb, u32 info_flags);
2066 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
2067 int retry_count, bool send_to_cooked,
2068 struct ieee80211_tx_status *status);
2069
2070 void ieee80211_check_fast_xmit(struct sta_info *sta);
2071 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
2072 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
2073 void ieee80211_clear_fast_xmit(struct sta_info *sta);
2074 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
2075 const u8 *buf, size_t len,
2076 const u8 *dest, __be16 proto, bool unencrypted,
2077 int link_id, u64 *cookie);
2078 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
2079 const u8 *buf, size_t len);
2080 void __ieee80211_xmit_fast(struct ieee80211_sub_if_data *sdata,
2081 struct sta_info *sta,
2082 struct ieee80211_fast_tx *fast_tx,
2083 struct sk_buff *skb, bool ampdu,
2084 const u8 *da, const u8 *sa);
2085 void ieee80211_aggr_check(struct ieee80211_sub_if_data *sdata,
2086 struct sta_info *sta, struct sk_buff *skb);
2087
2088 /* HT */
2089 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
2090 struct ieee80211_sta_ht_cap *ht_cap);
2091 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
2092 struct ieee80211_supported_band *sband,
2093 const struct ieee80211_ht_cap *ht_cap_ie,
2094 struct link_sta_info *link_sta);
2095 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
2096 const u8 *da, u16 tid,
2097 u16 initiator, u16 reason_code);
2098 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
2099 enum ieee80211_smps_mode smps, const u8 *da,
2100 const u8 *bssid, int link_id);
2101 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
2102 enum ieee80211_smps_mode smps_mode_new);
2103
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 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
2128 struct tid_ampdu_tx *tid_tx);
2129 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
2130 struct tid_ampdu_tx *tid_tx);
2131 void ieee80211_ba_session_work(struct wiphy *wiphy, struct wiphy_work *work);
2132 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
2133 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
2134
2135 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
2136 enum nl80211_smps_mode
2137 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
2138
2139 /* VHT */
2140 void
2141 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
2142 struct ieee80211_supported_band *sband,
2143 const struct ieee80211_vht_cap *vht_cap_ie,
2144 const struct ieee80211_vht_cap *vht_cap_ie2,
2145 struct link_sta_info *link_sta);
2146 enum ieee80211_sta_rx_bandwidth
2147 ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta);
2148 enum ieee80211_sta_rx_bandwidth
2149 ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta);
2150 void ieee80211_sta_init_nss(struct link_sta_info *link_sta);
2151 enum ieee80211_sta_rx_bandwidth
2152 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
2153 enum nl80211_chan_width
2154 ieee80211_sta_cap_chan_bw(struct link_sta_info *link_sta);
2155 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
2156 struct ieee80211_link_data *link,
2157 struct ieee80211_mgmt *mgmt);
2158 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2159 struct link_sta_info *sta,
2160 u8 opmode, enum nl80211_band band);
2161 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2162 struct link_sta_info *sta,
2163 u8 opmode, enum nl80211_band band);
2164 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
2165 struct ieee80211_sta_vht_cap *vht_cap);
2166 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
2167 u16 vht_mask[NL80211_VHT_NSS_MAX]);
2168 enum nl80211_chan_width
2169 ieee80211_sta_rx_bw_to_chan_width(struct link_sta_info *sta);
2170
2171 /* HE */
2172 void
2173 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
2174 struct ieee80211_supported_band *sband,
2175 const u8 *he_cap_ie, u8 he_cap_len,
2176 const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
2177 struct link_sta_info *link_sta);
2178 void
2179 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
2180 const struct ieee80211_he_spr *he_spr_ie_elem);
2181
2182 void
2183 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
2184 const struct ieee80211_he_operation *he_op_ie_elem);
2185
2186 /* S1G */
2187 void ieee80211_s1g_sta_rate_init(struct sta_info *sta);
2188 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb);
2189 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata,
2190 struct sk_buff *skb);
2191 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata,
2192 struct sk_buff *skb);
2193
2194 /* Spectrum management */
2195 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
2196 struct ieee80211_mgmt *mgmt,
2197 size_t len);
2198 /**
2199 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
2200 * @sdata: the sdata of the interface which has received the frame
2201 * @elems: parsed 802.11 elements received with the frame
2202 * @current_band: indicates the current band
2203 * @vht_cap_info: VHT capabilities of the transmitter
2204 * @conn: contains information about own capabilities and restrictions
2205 * to decide which channel switch announcements can be accepted
2206 * @bssid: the currently connected bssid (for reporting)
2207 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
2208 * All of them will be filled with if success only.
2209 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
2210 */
2211 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
2212 struct ieee802_11_elems *elems,
2213 enum nl80211_band current_band,
2214 u32 vht_cap_info,
2215 struct ieee80211_conn_settings *conn,
2216 u8 *bssid,
2217 struct ieee80211_csa_ie *csa_ie);
2218
2219 /* Suspend/resume and hw reconfiguration */
2220 int ieee80211_reconfig(struct ieee80211_local *local);
2221 void ieee80211_stop_device(struct ieee80211_local *local);
2222
2223 int __ieee80211_suspend(struct ieee80211_hw *hw,
2224 struct cfg80211_wowlan *wowlan);
2225
__ieee80211_resume(struct ieee80211_hw * hw)2226 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
2227 {
2228 struct ieee80211_local *local = hw_to_local(hw);
2229
2230 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
2231 !test_bit(SCAN_COMPLETED, &local->scanning),
2232 "%s: resume with hardware scan still in progress\n",
2233 wiphy_name(hw->wiphy));
2234
2235 return ieee80211_reconfig(hw_to_local(hw));
2236 }
2237
2238 /* utility functions/constants */
2239 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
2240 const char *ieee80211_conn_mode_str(enum ieee80211_conn_mode mode);
2241 enum ieee80211_conn_bw_limit
2242 ieee80211_min_bw_limit_from_chandef(struct cfg80211_chan_def *chandef);
2243 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
2244 int rate, int erp, int short_preamble);
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 * @mode: connection mode for parsing
2285 * @start: pointer to the elements
2286 * @len: length of the elements
2287 * @action: %true if the elements came from an action frame
2288 * @filter: bitmap of element IDs to filter out while calculating
2289 * the element CRC
2290 * @crc: CRC starting value
2291 * @bss: the BSS to parse this as, for multi-BSSID cases this can
2292 * represent a non-transmitting BSS in which case the data
2293 * for that non-transmitting BSS is returned
2294 * @link_id: the link ID to parse elements for, if a STA profile
2295 * is present in the multi-link element, or -1 to ignore;
2296 * note that the code currently assumes parsing an association
2297 * (or re-association) response frame if this is given
2298 * @from_ap: frame is received from an AP (currently used only
2299 * for EHT capabilities parsing)
2300 */
2301 struct ieee80211_elems_parse_params {
2302 enum ieee80211_conn_mode mode;
2303 const u8 *start;
2304 size_t len;
2305 bool action;
2306 u64 filter;
2307 u32 crc;
2308 struct cfg80211_bss *bss;
2309 int link_id;
2310 bool from_ap;
2311 };
2312
2313 struct ieee802_11_elems *
2314 ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params);
2315
2316 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)2317 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
2318 u64 filter, u32 crc,
2319 struct cfg80211_bss *bss)
2320 {
2321 struct ieee80211_elems_parse_params params = {
2322 .mode = IEEE80211_CONN_MODE_HIGHEST,
2323 .start = start,
2324 .len = len,
2325 .action = action,
2326 .filter = filter,
2327 .crc = crc,
2328 .bss = bss,
2329 .link_id = -1,
2330 };
2331
2332 return ieee802_11_parse_elems_full(¶ms);
2333 }
2334
2335 static inline struct ieee802_11_elems *
ieee802_11_parse_elems(const u8 * start,size_t len,bool action,struct cfg80211_bss * bss)2336 ieee802_11_parse_elems(const u8 *start, size_t len, bool action,
2337 struct cfg80211_bss *bss)
2338 {
2339 return ieee802_11_parse_elems_crc(start, len, action, 0, 0, bss);
2340 }
2341
2342 extern const int ieee802_1d_to_ac[8];
2343
ieee80211_ac_from_tid(int tid)2344 static inline int ieee80211_ac_from_tid(int tid)
2345 {
2346 return ieee802_1d_to_ac[tid & 7];
2347 }
2348
2349 void ieee80211_dynamic_ps_enable_work(struct wiphy *wiphy,
2350 struct wiphy_work *work);
2351 void ieee80211_dynamic_ps_disable_work(struct wiphy *wiphy,
2352 struct wiphy_work *work);
2353 void ieee80211_dynamic_ps_timer(struct timer_list *t);
2354 void ieee80211_send_nullfunc(struct ieee80211_local *local,
2355 struct ieee80211_sub_if_data *sdata,
2356 bool powersave);
2357 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
2358 struct ieee80211_sub_if_data *sdata);
2359 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2360 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
2361
2362 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
2363 unsigned long queues,
2364 enum queue_stop_reason reason,
2365 bool refcounted);
2366 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
2367 struct ieee80211_sub_if_data *sdata,
2368 enum queue_stop_reason reason);
2369 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
2370 struct ieee80211_sub_if_data *sdata,
2371 enum queue_stop_reason reason);
2372 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
2373 unsigned long queues,
2374 enum queue_stop_reason reason,
2375 bool refcounted);
2376 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
2377 enum queue_stop_reason reason,
2378 bool refcounted);
2379 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
2380 enum queue_stop_reason reason,
2381 bool refcounted);
2382 void ieee80211_add_pending_skb(struct ieee80211_local *local,
2383 struct sk_buff *skb);
2384 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
2385 struct sk_buff_head *skbs);
2386 void ieee80211_flush_queues(struct ieee80211_local *local,
2387 struct ieee80211_sub_if_data *sdata, bool drop);
2388 void __ieee80211_flush_queues(struct ieee80211_local *local,
2389 struct ieee80211_sub_if_data *sdata,
2390 unsigned int queues, bool drop);
2391
ieee80211_can_run_worker(struct ieee80211_local * local)2392 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2393 {
2394 /*
2395 * It's unsafe to try to do any work during reconfigure flow.
2396 * When the flow ends the work will be requeued.
2397 */
2398 if (local->in_reconfig)
2399 return false;
2400
2401 /*
2402 * If quiescing is set, we are racing with __ieee80211_suspend.
2403 * __ieee80211_suspend flushes the workers after setting quiescing,
2404 * and we check quiescing / suspended before enqueing new workers.
2405 * We should abort the worker to avoid the races below.
2406 */
2407 if (local->quiescing)
2408 return false;
2409
2410 /*
2411 * We might already be suspended if the following scenario occurs:
2412 * __ieee80211_suspend Control path
2413 *
2414 * if (local->quiescing)
2415 * return;
2416 * local->quiescing = true;
2417 * flush_workqueue();
2418 * queue_work(...);
2419 * local->suspended = true;
2420 * local->quiescing = false;
2421 * worker starts running...
2422 */
2423 if (local->suspended)
2424 return false;
2425
2426 return true;
2427 }
2428
2429 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2430 void ieee80211_txq_set_params(struct ieee80211_local *local);
2431 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2432 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2433 struct sta_info *sta,
2434 struct txq_info *txq, int tid);
2435 void ieee80211_txq_purge(struct ieee80211_local *local,
2436 struct txq_info *txqi);
2437 void ieee80211_purge_sta_txqs(struct sta_info *sta);
2438 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2439 struct ieee80211_sub_if_data *sdata);
2440 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2441 struct txq_info *txqi);
2442 void ieee80211_wake_txqs(struct tasklet_struct *t);
2443 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2444 u16 transaction, u16 auth_alg, u16 status,
2445 const u8 *extra, size_t extra_len, const u8 *bssid,
2446 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2447 u32 tx_flags);
2448 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2449 const u8 *da, const u8 *bssid,
2450 u16 stype, u16 reason,
2451 bool send_frame, u8 *frame_buf);
2452
2453 enum {
2454 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
2455 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
2456 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
2457 };
2458
2459 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2460 size_t buffer_len,
2461 struct ieee80211_scan_ies *ie_desc,
2462 const u8 *ie, size_t ie_len,
2463 u8 bands_used, u32 *rate_masks,
2464 struct cfg80211_chan_def *chandef,
2465 u32 flags);
2466 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2467 const u8 *src, const u8 *dst,
2468 u32 ratemask,
2469 struct ieee80211_channel *chan,
2470 const u8 *ssid, size_t ssid_len,
2471 const u8 *ie, size_t ie_len,
2472 u32 flags);
2473 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2474 struct ieee802_11_elems *elems,
2475 enum nl80211_band band, u32 *basic_rates);
2476 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2477 struct ieee80211_link_data *link,
2478 enum ieee80211_smps_mode smps_mode);
2479 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata,
2480 struct ieee80211_link_data *link);
2481 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata,
2482 int link_id);
2483
2484 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2485 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2486 u16 cap);
2487 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2488 const struct cfg80211_chan_def *chandef,
2489 u16 prot_mode, bool rifs_mode);
2490 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2491 const struct cfg80211_chan_def *chandef);
2492 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2493 u32 cap);
2494 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2495 const struct cfg80211_chan_def *chandef);
2496 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata);
2497 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef);
2498 u8 *ieee80211_ie_build_eht_oper(u8 *pos, struct cfg80211_chan_def *chandef,
2499 const struct ieee80211_sta_eht_cap *eht_cap);
2500 int ieee80211_parse_bitrates(enum nl80211_chan_width width,
2501 const struct ieee80211_supported_band *sband,
2502 const u8 *srates, int srates_len, u32 *rates);
2503 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2504 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
2505 struct ieee80211_sta_s1g_cap *caps,
2506 struct sk_buff *skb);
2507 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
2508 struct sk_buff *skb);
2509
2510 /* element building in SKBs */
2511 int ieee80211_put_srates_elem(struct sk_buff *skb,
2512 const struct ieee80211_supported_band *sband,
2513 u32 basic_rates, u32 rate_flags, u32 masked_rates,
2514 u8 element_id);
2515 int ieee80211_put_he_cap(struct sk_buff *skb,
2516 struct ieee80211_sub_if_data *sdata,
2517 const struct ieee80211_supported_band *sband,
2518 const struct ieee80211_conn_settings *conn);
2519 int ieee80211_put_he_6ghz_cap(struct sk_buff *skb,
2520 struct ieee80211_sub_if_data *sdata,
2521 enum ieee80211_smps_mode smps_mode);
2522 int ieee80211_put_eht_cap(struct sk_buff *skb,
2523 struct ieee80211_sub_if_data *sdata,
2524 const struct ieee80211_supported_band *sband,
2525 const struct ieee80211_conn_settings *conn);
2526
2527 /* channel management */
2528 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2529 struct cfg80211_chan_def *chandef);
2530 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
2531 const struct ieee80211_vht_operation *oper,
2532 const struct ieee80211_ht_operation *htop,
2533 struct cfg80211_chan_def *chandef);
2534 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation_info *info,
2535 struct cfg80211_chan_def *chandef);
2536 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_local *local,
2537 const struct ieee80211_he_operation *he_oper,
2538 const struct ieee80211_eht_operation *eht_oper,
2539 struct cfg80211_chan_def *chandef);
2540 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
2541 struct cfg80211_chan_def *chandef);
2542 void ieee80211_chandef_downgrade(struct cfg80211_chan_def *chandef,
2543 struct ieee80211_conn_settings *conn);
2544 static inline void
ieee80211_chanreq_downgrade(struct ieee80211_chan_req * chanreq,struct ieee80211_conn_settings * conn)2545 ieee80211_chanreq_downgrade(struct ieee80211_chan_req *chanreq,
2546 struct ieee80211_conn_settings *conn)
2547 {
2548 ieee80211_chandef_downgrade(&chanreq->oper, conn);
2549 if (WARN_ON(!conn))
2550 return;
2551 if (conn->mode < IEEE80211_CONN_MODE_EHT)
2552 chanreq->ap.chan = NULL;
2553 }
2554
2555 bool ieee80211_chanreq_identical(const struct ieee80211_chan_req *a,
2556 const struct ieee80211_chan_req *b);
2557
2558 int __must_check
2559 _ieee80211_link_use_channel(struct ieee80211_link_data *link,
2560 const struct ieee80211_chan_req *req,
2561 enum ieee80211_chanctx_mode mode,
2562 bool assign_on_failure);
2563
2564 static inline int __must_check
ieee80211_link_use_channel(struct ieee80211_link_data * link,const struct ieee80211_chan_req * req,enum ieee80211_chanctx_mode mode)2565 ieee80211_link_use_channel(struct ieee80211_link_data *link,
2566 const struct ieee80211_chan_req *req,
2567 enum ieee80211_chanctx_mode mode)
2568 {
2569 return _ieee80211_link_use_channel(link, req, mode, false);
2570 }
2571
2572 int __must_check
2573 ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link,
2574 const struct ieee80211_chan_req *req,
2575 enum ieee80211_chanctx_mode mode,
2576 bool radar_required);
2577 int __must_check
2578 ieee80211_link_use_reserved_context(struct ieee80211_link_data *link);
2579 int ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link);
2580
2581 int __must_check
2582 ieee80211_link_change_chanreq(struct ieee80211_link_data *link,
2583 const struct ieee80211_chan_req *req,
2584 u64 *changed);
2585 void __ieee80211_link_release_channel(struct ieee80211_link_data *link,
2586 bool skip_idle_recalc);
2587 void ieee80211_link_release_channel(struct ieee80211_link_data *link);
2588 void ieee80211_link_vlan_copy_chanctx(struct ieee80211_link_data *link);
2589 void ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link,
2590 bool clear);
2591 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2592 struct ieee80211_chanctx *ctx);
2593
2594 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2595 struct ieee80211_chanctx *chanctx);
2596 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2597 struct ieee80211_chanctx *ctx,
2598 struct ieee80211_link_data *rsvd_for);
2599 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2600
2601 void ieee80211_dfs_cac_timer_work(struct wiphy *wiphy, struct wiphy_work *work);
2602 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2603 void ieee80211_dfs_radar_detected_work(struct wiphy *wiphy,
2604 struct wiphy_work *work);
2605 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2606 struct cfg80211_csa_settings *csa_settings);
2607
2608 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2609 struct ieee80211_sub_if_data *sdata);
2610 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2611 const struct cfg80211_chan_def *chandef,
2612 enum ieee80211_chanctx_mode chanmode,
2613 u8 radar_detect);
2614 int ieee80211_max_num_channels(struct ieee80211_local *local);
2615 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2616 struct ieee80211_chanctx *ctx);
2617
2618 /* TDLS */
2619 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2620 const u8 *peer, int link_id,
2621 u8 action_code, u8 dialog_token, u16 status_code,
2622 u32 peer_capability, bool initiator,
2623 const u8 *extra_ies, size_t extra_ies_len);
2624 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2625 const u8 *peer, enum nl80211_tdls_operation oper);
2626 void ieee80211_tdls_peer_del_work(struct wiphy *wiphy, struct wiphy_work *wk);
2627 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2628 const u8 *addr, u8 oper_class,
2629 struct cfg80211_chan_def *chandef);
2630 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2631 struct net_device *dev,
2632 const u8 *addr);
2633 void ieee80211_teardown_tdls_peers(struct ieee80211_link_data *link);
2634 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2635 const u8 *peer, u16 reason);
2636 void
2637 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata,
2638 struct sk_buff *skb);
2639
2640
2641 const char *ieee80211_get_reason_code_string(u16 reason_code);
2642 u16 ieee80211_encode_usf(int val);
2643 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
2644 enum nl80211_iftype type);
2645
2646 extern const struct ethtool_ops ieee80211_ethtool_ops;
2647
2648 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw,
2649 struct ieee80211_vif *vif,
2650 struct ieee80211_sta *pubsta,
2651 int len, bool ampdu);
2652 #ifdef CONFIG_MAC80211_NOINLINE
2653 #define debug_noinline noinline
2654 #else
2655 #define debug_noinline
2656 #endif
2657
2658 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache);
2659 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache);
2660
2661 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata);
2662
2663 void
2664 ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata,
2665 struct ieee80211_supported_band *sband,
2666 const u8 *he_cap_ie, u8 he_cap_len,
2667 const struct ieee80211_eht_cap_elem *eht_cap_ie_elem,
2668 u8 eht_cap_len,
2669 struct link_sta_info *link_sta);
2670 void ieee80211_process_neg_ttlm_req(struct ieee80211_sub_if_data *sdata,
2671 struct ieee80211_mgmt *mgmt, size_t len);
2672 void ieee80211_process_neg_ttlm_res(struct ieee80211_sub_if_data *sdata,
2673 struct ieee80211_mgmt *mgmt, size_t len);
2674 int ieee80211_req_neg_ttlm(struct ieee80211_sub_if_data *sdata,
2675 struct cfg80211_ttlm_params *params);
2676
2677 void ieee80211_check_wbrf_support(struct ieee80211_local *local);
2678 void ieee80211_add_wbrf(struct ieee80211_local *local, struct cfg80211_chan_def *chandef);
2679 void ieee80211_remove_wbrf(struct ieee80211_local *local, struct cfg80211_chan_def *chandef);
2680
2681 #if IS_ENABLED(CONFIG_MAC80211_KUNIT_TEST)
2682 #define EXPORT_SYMBOL_IF_MAC80211_KUNIT(sym) EXPORT_SYMBOL_IF_KUNIT(sym)
2683 #define VISIBLE_IF_MAC80211_KUNIT
2684 ieee80211_rx_result
2685 ieee80211_drop_unencrypted_mgmt(struct ieee80211_rx_data *rx);
2686 #else
2687 #define EXPORT_SYMBOL_IF_MAC80211_KUNIT(sym)
2688 #define VISIBLE_IF_MAC80211_KUNIT static
2689 #endif
2690
2691 #endif /* IEEE80211_I_H */
2692