xref: /openbmc/linux/net/mac80211/ieee80211_i.h (revision dfc53baa)
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright 2002-2005, Instant802 Networks, Inc.
4  * Copyright 2005, Devicescape Software, Inc.
5  * Copyright 2006-2007	Jiri Benc <jbenc@suse.cz>
6  * Copyright 2007-2010	Johannes Berg <johannes@sipsolutions.net>
7  * Copyright 2013-2015  Intel Mobile Communications GmbH
8  * Copyright (C) 2018-2020 Intel Corporation
9  */
10 
11 #ifndef IEEE80211_I_H
12 #define IEEE80211_I_H
13 
14 #include <linux/kernel.h>
15 #include <linux/device.h>
16 #include <linux/if_ether.h>
17 #include <linux/interrupt.h>
18 #include <linux/list.h>
19 #include <linux/netdevice.h>
20 #include <linux/skbuff.h>
21 #include <linux/workqueue.h>
22 #include <linux/types.h>
23 #include <linux/spinlock.h>
24 #include <linux/etherdevice.h>
25 #include <linux/leds.h>
26 #include <linux/idr.h>
27 #include <linux/rhashtable.h>
28 #include <net/ieee80211_radiotap.h>
29 #include <net/cfg80211.h>
30 #include <net/mac80211.h>
31 #include <net/fq.h>
32 #include "key.h"
33 #include "sta_info.h"
34 #include "debug.h"
35 
36 extern const struct cfg80211_ops mac80211_config_ops;
37 
38 struct ieee80211_local;
39 
40 /* Maximum number of broadcast/multicast frames to buffer when some of the
41  * associated stations are using power saving. */
42 #define AP_MAX_BC_BUFFER 128
43 
44 /* Maximum number of frames buffered to all STAs, including multicast frames.
45  * Note: increasing this limit increases the potential memory requirement. Each
46  * frame can be up to about 2 kB long. */
47 #define TOTAL_MAX_TX_BUFFER 512
48 
49 /* Required encryption head and tailroom */
50 #define IEEE80211_ENCRYPT_HEADROOM 8
51 #define IEEE80211_ENCRYPT_TAILROOM 18
52 
53 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
54  * reception of at least three fragmented frames. This limit can be increased
55  * by changing this define, at the cost of slower frame reassembly and
56  * increased memory use (about 2 kB of RAM per entry). */
57 #define IEEE80211_FRAGMENT_MAX 4
58 
59 /* power level hasn't been configured (or set to automatic) */
60 #define IEEE80211_UNSET_POWER_LEVEL	INT_MIN
61 
62 /*
63  * Some APs experience problems when working with U-APSD. Decreasing the
64  * probability of that happening by using legacy mode for all ACs but VO isn't
65  * enough.
66  *
67  * Cisco 4410N originally forced us to enable VO by default only because it
68  * treated non-VO ACs as legacy.
69  *
70  * However some APs (notably Netgear R7000) silently reclassify packets to
71  * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
72  * clients would never see some frames (e.g. ARP responses) or would fetch them
73  * accidentally after a long time.
74  *
75  * It makes little sense to enable u-APSD queues by default because it needs
76  * userspace applications to be aware of it to actually take advantage of the
77  * possible additional powersavings. Implicitly depending on driver autotrigger
78  * frame support doesn't make much sense.
79  */
80 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
81 
82 #define IEEE80211_DEFAULT_MAX_SP_LEN		\
83 	IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
84 
85 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS];
86 
87 #define IEEE80211_DEAUTH_FRAME_LEN	(24 /* hdr */ + 2 /* reason */)
88 
89 #define IEEE80211_MAX_NAN_INSTANCE_ID 255
90 
91 struct ieee80211_fragment_entry {
92 	struct sk_buff_head skb_list;
93 	unsigned long first_frag_time;
94 	u16 seq;
95 	u16 extra_len;
96 	u16 last_frag;
97 	u8 rx_queue;
98 	bool check_sequential_pn; /* needed for CCMP/GCMP */
99 	u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
100 };
101 
102 
103 struct ieee80211_bss {
104 	u32 device_ts_beacon, device_ts_presp;
105 
106 	bool wmm_used;
107 	bool uapsd_supported;
108 
109 #define IEEE80211_MAX_SUPP_RATES 32
110 	u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
111 	size_t supp_rates_len;
112 	struct ieee80211_rate *beacon_rate;
113 
114 	u32 vht_cap_info;
115 
116 	/*
117 	 * During association, we save an ERP value from a probe response so
118 	 * that we can feed ERP info to the driver when handling the
119 	 * association completes. these fields probably won't be up-to-date
120 	 * otherwise, you probably don't want to use them.
121 	 */
122 	bool has_erp_value;
123 	u8 erp_value;
124 
125 	/* Keep track of the corruption of the last beacon/probe response. */
126 	u8 corrupt_data;
127 
128 	/* Keep track of what bits of information we have valid info for. */
129 	u8 valid_data;
130 };
131 
132 /**
133  * enum ieee80211_corrupt_data_flags - BSS data corruption flags
134  * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
135  * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
136  *
137  * These are bss flags that are attached to a bss in the
138  * @corrupt_data field of &struct ieee80211_bss.
139  */
140 enum ieee80211_bss_corrupt_data_flags {
141 	IEEE80211_BSS_CORRUPT_BEACON		= BIT(0),
142 	IEEE80211_BSS_CORRUPT_PROBE_RESP	= BIT(1)
143 };
144 
145 /**
146  * enum ieee80211_valid_data_flags - BSS valid data flags
147  * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
148  * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
149  * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
150  *
151  * These are bss flags that are attached to a bss in the
152  * @valid_data field of &struct ieee80211_bss.  They show which parts
153  * of the data structure were received as a result of an un-corrupted
154  * beacon/probe response.
155  */
156 enum ieee80211_bss_valid_data_flags {
157 	IEEE80211_BSS_VALID_WMM			= BIT(1),
158 	IEEE80211_BSS_VALID_RATES		= BIT(2),
159 	IEEE80211_BSS_VALID_ERP			= BIT(3)
160 };
161 
162 typedef unsigned __bitwise ieee80211_tx_result;
163 #define TX_CONTINUE	((__force ieee80211_tx_result) 0u)
164 #define TX_DROP		((__force ieee80211_tx_result) 1u)
165 #define TX_QUEUED	((__force ieee80211_tx_result) 2u)
166 
167 #define IEEE80211_TX_UNICAST		BIT(1)
168 #define IEEE80211_TX_PS_BUFFERED	BIT(2)
169 
170 struct ieee80211_tx_data {
171 	struct sk_buff *skb;
172 	struct sk_buff_head skbs;
173 	struct ieee80211_local *local;
174 	struct ieee80211_sub_if_data *sdata;
175 	struct sta_info *sta;
176 	struct ieee80211_key *key;
177 	struct ieee80211_tx_rate rate;
178 
179 	unsigned int flags;
180 };
181 
182 
183 typedef unsigned __bitwise ieee80211_rx_result;
184 #define RX_CONTINUE		((__force ieee80211_rx_result) 0u)
185 #define RX_DROP_UNUSABLE	((__force ieee80211_rx_result) 1u)
186 #define RX_DROP_MONITOR		((__force ieee80211_rx_result) 2u)
187 #define RX_QUEUED		((__force ieee80211_rx_result) 3u)
188 
189 /**
190  * enum ieee80211_packet_rx_flags - packet RX flags
191  * @IEEE80211_RX_AMSDU: a-MSDU packet
192  * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
193  * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
194  *
195  * These are per-frame flags that are attached to a frame in the
196  * @rx_flags field of &struct ieee80211_rx_status.
197  */
198 enum ieee80211_packet_rx_flags {
199 	IEEE80211_RX_AMSDU			= BIT(3),
200 	IEEE80211_RX_MALFORMED_ACTION_FRM	= BIT(4),
201 	IEEE80211_RX_DEFERRED_RELEASE		= BIT(5),
202 };
203 
204 /**
205  * enum ieee80211_rx_flags - RX data flags
206  *
207  * @IEEE80211_RX_CMNTR: received on cooked monitor already
208  * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
209  *	to cfg80211_report_obss_beacon().
210  *
211  * These flags are used across handling multiple interfaces
212  * for a single frame.
213  */
214 enum ieee80211_rx_flags {
215 	IEEE80211_RX_CMNTR		= BIT(0),
216 	IEEE80211_RX_BEACON_REPORTED	= BIT(1),
217 };
218 
219 struct ieee80211_rx_data {
220 	struct list_head *list;
221 	struct sk_buff *skb;
222 	struct ieee80211_local *local;
223 	struct ieee80211_sub_if_data *sdata;
224 	struct sta_info *sta;
225 	struct ieee80211_key *key;
226 
227 	unsigned int flags;
228 
229 	/*
230 	 * Index into sequence numbers array, 0..16
231 	 * since the last (16) is used for non-QoS,
232 	 * will be 16 on non-QoS frames.
233 	 */
234 	int seqno_idx;
235 
236 	/*
237 	 * Index into the security IV/PN arrays, 0..16
238 	 * since the last (16) is used for CCMP-encrypted
239 	 * management frames, will be set to 16 on mgmt
240 	 * frames and 0 on non-QoS frames.
241 	 */
242 	int security_idx;
243 
244 	u32 tkip_iv32;
245 	u16 tkip_iv16;
246 };
247 
248 struct ieee80211_csa_settings {
249 	const u16 *counter_offsets_beacon;
250 	const u16 *counter_offsets_presp;
251 
252 	int n_counter_offsets_beacon;
253 	int n_counter_offsets_presp;
254 
255 	u8 count;
256 };
257 
258 struct beacon_data {
259 	u8 *head, *tail;
260 	int head_len, tail_len;
261 	struct ieee80211_meshconf_ie *meshconf;
262 	u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
263 	u8 csa_current_counter;
264 	struct rcu_head rcu_head;
265 };
266 
267 struct probe_resp {
268 	struct rcu_head rcu_head;
269 	int len;
270 	u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
271 	u8 data[];
272 };
273 
274 struct ps_data {
275 	/* yes, this looks ugly, but guarantees that we can later use
276 	 * bitmap_empty :)
277 	 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
278 	u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
279 			__aligned(__alignof__(unsigned long));
280 	struct sk_buff_head bc_buf;
281 	atomic_t num_sta_ps; /* number of stations in PS mode */
282 	int dtim_count;
283 	bool dtim_bc_mc;
284 };
285 
286 struct ieee80211_if_ap {
287 	struct beacon_data __rcu *beacon;
288 	struct probe_resp __rcu *probe_resp;
289 
290 	/* to be used after channel switch. */
291 	struct cfg80211_beacon_data *next_beacon;
292 	struct list_head vlans; /* write-protected with RTNL and local->mtx */
293 
294 	struct ps_data ps;
295 	atomic_t num_mcast_sta; /* number of stations receiving multicast */
296 
297 	bool multicast_to_unicast;
298 };
299 
300 struct ieee80211_if_wds {
301 	struct sta_info *sta;
302 	u8 remote_addr[ETH_ALEN];
303 };
304 
305 struct ieee80211_if_vlan {
306 	struct list_head list; /* write-protected with RTNL and local->mtx */
307 
308 	/* used for all tx if the VLAN is configured to 4-addr mode */
309 	struct sta_info __rcu *sta;
310 	atomic_t num_mcast_sta; /* number of stations receiving multicast */
311 };
312 
313 struct mesh_stats {
314 	__u32 fwded_mcast;		/* Mesh forwarded multicast frames */
315 	__u32 fwded_unicast;		/* Mesh forwarded unicast frames */
316 	__u32 fwded_frames;		/* Mesh total forwarded frames */
317 	__u32 dropped_frames_ttl;	/* Not transmitted since mesh_ttl == 0*/
318 	__u32 dropped_frames_no_route;	/* Not transmitted, no route found */
319 	__u32 dropped_frames_congestion;/* Not forwarded due to congestion */
320 };
321 
322 #define PREQ_Q_F_START		0x1
323 #define PREQ_Q_F_REFRESH	0x2
324 struct mesh_preq_queue {
325 	struct list_head list;
326 	u8 dst[ETH_ALEN];
327 	u8 flags;
328 };
329 
330 struct ieee80211_roc_work {
331 	struct list_head list;
332 
333 	struct ieee80211_sub_if_data *sdata;
334 
335 	struct ieee80211_channel *chan;
336 
337 	bool started, abort, hw_begun, notified;
338 	bool on_channel;
339 
340 	unsigned long start_time;
341 
342 	u32 duration, req_duration;
343 	struct sk_buff *frame;
344 	u64 cookie, mgmt_tx_cookie;
345 	enum ieee80211_roc_type type;
346 };
347 
348 /* flags used in struct ieee80211_if_managed.flags */
349 enum ieee80211_sta_flags {
350 	IEEE80211_STA_CONNECTION_POLL	= BIT(1),
351 	IEEE80211_STA_CONTROL_PORT	= BIT(2),
352 	IEEE80211_STA_DISABLE_HT	= BIT(4),
353 	IEEE80211_STA_MFP_ENABLED	= BIT(6),
354 	IEEE80211_STA_UAPSD_ENABLED	= BIT(7),
355 	IEEE80211_STA_NULLFUNC_ACKED	= BIT(8),
356 	IEEE80211_STA_RESET_SIGNAL_AVE	= BIT(9),
357 	IEEE80211_STA_DISABLE_40MHZ	= BIT(10),
358 	IEEE80211_STA_DISABLE_VHT	= BIT(11),
359 	IEEE80211_STA_DISABLE_80P80MHZ	= BIT(12),
360 	IEEE80211_STA_DISABLE_160MHZ	= BIT(13),
361 	IEEE80211_STA_DISABLE_WMM	= BIT(14),
362 	IEEE80211_STA_ENABLE_RRM	= BIT(15),
363 	IEEE80211_STA_DISABLE_HE	= BIT(16),
364 };
365 
366 struct ieee80211_mgd_auth_data {
367 	struct cfg80211_bss *bss;
368 	unsigned long timeout;
369 	int tries;
370 	u16 algorithm, expected_transaction;
371 
372 	u8 key[WLAN_KEY_LEN_WEP104];
373 	u8 key_len, key_idx;
374 	bool done;
375 	bool peer_confirmed;
376 	bool timeout_started;
377 
378 	u16 sae_trans, sae_status;
379 	size_t data_len;
380 	u8 data[];
381 };
382 
383 struct ieee80211_mgd_assoc_data {
384 	struct cfg80211_bss *bss;
385 	const u8 *supp_rates;
386 
387 	unsigned long timeout;
388 	int tries;
389 
390 	u16 capability;
391 	u8 prev_bssid[ETH_ALEN];
392 	u8 ssid[IEEE80211_MAX_SSID_LEN];
393 	u8 ssid_len;
394 	u8 supp_rates_len;
395 	bool wmm, uapsd;
396 	bool need_beacon;
397 	bool synced;
398 	bool timeout_started;
399 
400 	u8 ap_ht_param;
401 
402 	struct ieee80211_vht_cap ap_vht_cap;
403 
404 	u8 fils_nonces[2 * FILS_NONCE_LEN];
405 	u8 fils_kek[FILS_MAX_KEK_LEN];
406 	size_t fils_kek_len;
407 
408 	size_t ie_len;
409 	u8 ie[];
410 };
411 
412 struct ieee80211_sta_tx_tspec {
413 	/* timestamp of the first packet in the time slice */
414 	unsigned long time_slice_start;
415 
416 	u32 admitted_time; /* in usecs, unlike over the air */
417 	u8 tsid;
418 	s8 up; /* signed to be able to invalidate with -1 during teardown */
419 
420 	/* consumed TX time in microseconds in the time slice */
421 	u32 consumed_tx_time;
422 	enum {
423 		TX_TSPEC_ACTION_NONE = 0,
424 		TX_TSPEC_ACTION_DOWNGRADE,
425 		TX_TSPEC_ACTION_STOP_DOWNGRADE,
426 	} action;
427 	bool downgraded;
428 };
429 
430 DECLARE_EWMA(beacon_signal, 4, 4)
431 
432 struct ieee80211_if_managed {
433 	struct timer_list timer;
434 	struct timer_list conn_mon_timer;
435 	struct timer_list bcn_mon_timer;
436 	struct timer_list chswitch_timer;
437 	struct work_struct monitor_work;
438 	struct work_struct chswitch_work;
439 	struct work_struct beacon_connection_loss_work;
440 	struct work_struct csa_connection_drop_work;
441 
442 	unsigned long beacon_timeout;
443 	unsigned long probe_timeout;
444 	int probe_send_count;
445 	bool nullfunc_failed;
446 	bool connection_loss;
447 
448 	struct cfg80211_bss *associated;
449 	struct ieee80211_mgd_auth_data *auth_data;
450 	struct ieee80211_mgd_assoc_data *assoc_data;
451 
452 	u8 bssid[ETH_ALEN] __aligned(2);
453 
454 	bool powersave; /* powersave requested for this iface */
455 	bool broken_ap; /* AP is broken -- turn off powersave */
456 	bool have_beacon;
457 	u8 dtim_period;
458 	enum ieee80211_smps_mode req_smps, /* requested smps mode */
459 				 driver_smps_mode; /* smps mode request */
460 
461 	struct work_struct request_smps_work;
462 
463 	unsigned int flags;
464 
465 	bool csa_waiting_bcn;
466 	bool csa_ignored_same_chan;
467 
468 	bool beacon_crc_valid;
469 	u32 beacon_crc;
470 
471 	bool status_acked;
472 	bool status_received;
473 	__le16 status_fc;
474 
475 	enum {
476 		IEEE80211_MFP_DISABLED,
477 		IEEE80211_MFP_OPTIONAL,
478 		IEEE80211_MFP_REQUIRED
479 	} mfp; /* management frame protection */
480 
481 	/*
482 	 * Bitmask of enabled u-apsd queues,
483 	 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
484 	 * to take effect.
485 	 */
486 	unsigned int uapsd_queues;
487 
488 	/*
489 	 * Maximum number of buffered frames AP can deliver during a
490 	 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
491 	 * Needs a new association to take effect.
492 	 */
493 	unsigned int uapsd_max_sp_len;
494 
495 	int wmm_last_param_set;
496 	int mu_edca_last_param_set;
497 
498 	u8 use_4addr;
499 
500 	s16 p2p_noa_index;
501 
502 	struct ewma_beacon_signal ave_beacon_signal;
503 
504 	/*
505 	 * Number of Beacon frames used in ave_beacon_signal. This can be used
506 	 * to avoid generating less reliable cqm events that would be based
507 	 * only on couple of received frames.
508 	 */
509 	unsigned int count_beacon_signal;
510 
511 	/* Number of times beacon loss was invoked. */
512 	unsigned int beacon_loss_count;
513 
514 	/*
515 	 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
516 	 * that triggered a cqm event. 0 indicates that no event has been
517 	 * generated for the current association.
518 	 */
519 	int last_cqm_event_signal;
520 
521 	/*
522 	 * State variables for keeping track of RSSI of the AP currently
523 	 * connected to and informing driver when RSSI has gone
524 	 * below/above a certain threshold.
525 	 */
526 	int rssi_min_thold, rssi_max_thold;
527 	int last_ave_beacon_signal;
528 
529 	struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
530 	struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
531 	struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
532 	struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
533 
534 	/* TDLS support */
535 	u8 tdls_peer[ETH_ALEN] __aligned(2);
536 	struct delayed_work tdls_peer_del_work;
537 	struct sk_buff *orig_teardown_skb; /* The original teardown skb */
538 	struct sk_buff *teardown_skb; /* A copy to send through the AP */
539 	spinlock_t teardown_lock; /* To lock changing teardown_skb */
540 	bool tdls_chan_switch_prohibited;
541 	bool tdls_wider_bw_prohibited;
542 
543 	/* WMM-AC TSPEC support */
544 	struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
545 	/* Use a separate work struct so that we can do something here
546 	 * while the sdata->work is flushing the queues, for example.
547 	 * otherwise, in scenarios where we hardly get any traffic out
548 	 * on the BE queue, but there's a lot of VO traffic, we might
549 	 * get stuck in a downgraded situation and flush takes forever.
550 	 */
551 	struct delayed_work tx_tspec_wk;
552 
553 	/* Information elements from the last transmitted (Re)Association
554 	 * Request frame.
555 	 */
556 	u8 *assoc_req_ies;
557 	size_t assoc_req_ies_len;
558 };
559 
560 struct ieee80211_if_ibss {
561 	struct timer_list timer;
562 	struct work_struct csa_connection_drop_work;
563 
564 	unsigned long last_scan_completed;
565 
566 	u32 basic_rates;
567 
568 	bool fixed_bssid;
569 	bool fixed_channel;
570 	bool privacy;
571 
572 	bool control_port;
573 	bool userspace_handles_dfs;
574 
575 	u8 bssid[ETH_ALEN] __aligned(2);
576 	u8 ssid[IEEE80211_MAX_SSID_LEN];
577 	u8 ssid_len, ie_len;
578 	u8 *ie;
579 	struct cfg80211_chan_def chandef;
580 
581 	unsigned long ibss_join_req;
582 	/* probe response/beacon for IBSS */
583 	struct beacon_data __rcu *presp;
584 
585 	struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
586 	struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
587 
588 	spinlock_t incomplete_lock;
589 	struct list_head incomplete_stations;
590 
591 	enum {
592 		IEEE80211_IBSS_MLME_SEARCH,
593 		IEEE80211_IBSS_MLME_JOINED,
594 	} state;
595 };
596 
597 /**
598  * struct ieee80211_if_ocb - OCB mode state
599  *
600  * @housekeeping_timer: timer for periodic invocation of a housekeeping task
601  * @wrkq_flags: OCB deferred task action
602  * @incomplete_lock: delayed STA insertion lock
603  * @incomplete_stations: list of STAs waiting for delayed insertion
604  * @joined: indication if the interface is connected to an OCB network
605  */
606 struct ieee80211_if_ocb {
607 	struct timer_list housekeeping_timer;
608 	unsigned long wrkq_flags;
609 
610 	spinlock_t incomplete_lock;
611 	struct list_head incomplete_stations;
612 
613 	bool joined;
614 };
615 
616 /**
617  * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
618  *
619  * these declarations define the interface, which enables
620  * vendor-specific mesh synchronization
621  *
622  */
623 struct ieee802_11_elems;
624 struct ieee80211_mesh_sync_ops {
625 	void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
626 			     u16 stype,
627 			     struct ieee80211_mgmt *mgmt,
628 			     struct ieee802_11_elems *elems,
629 			     struct ieee80211_rx_status *rx_status);
630 
631 	/* should be called with beacon_data under RCU read lock */
632 	void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
633 			   struct beacon_data *beacon);
634 	/* add other framework functions here */
635 };
636 
637 struct mesh_csa_settings {
638 	struct rcu_head rcu_head;
639 	struct cfg80211_csa_settings settings;
640 };
641 
642 struct ieee80211_if_mesh {
643 	struct timer_list housekeeping_timer;
644 	struct timer_list mesh_path_timer;
645 	struct timer_list mesh_path_root_timer;
646 
647 	unsigned long wrkq_flags;
648 	unsigned long mbss_changed;
649 
650 	bool userspace_handles_dfs;
651 
652 	u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
653 	size_t mesh_id_len;
654 	/* Active Path Selection Protocol Identifier */
655 	u8 mesh_pp_id;
656 	/* Active Path Selection Metric Identifier */
657 	u8 mesh_pm_id;
658 	/* Congestion Control Mode Identifier */
659 	u8 mesh_cc_id;
660 	/* Synchronization Protocol Identifier */
661 	u8 mesh_sp_id;
662 	/* Authentication Protocol Identifier */
663 	u8 mesh_auth_id;
664 	/* Local mesh Sequence Number */
665 	u32 sn;
666 	/* Last used PREQ ID */
667 	u32 preq_id;
668 	atomic_t mpaths;
669 	/* Timestamp of last SN update */
670 	unsigned long last_sn_update;
671 	/* Time when it's ok to send next PERR */
672 	unsigned long next_perr;
673 	/* Timestamp of last PREQ sent */
674 	unsigned long last_preq;
675 	struct mesh_rmc *rmc;
676 	spinlock_t mesh_preq_queue_lock;
677 	struct mesh_preq_queue preq_queue;
678 	int preq_queue_len;
679 	struct mesh_stats mshstats;
680 	struct mesh_config mshcfg;
681 	atomic_t estab_plinks;
682 	u32 mesh_seqnum;
683 	bool accepting_plinks;
684 	int num_gates;
685 	struct beacon_data __rcu *beacon;
686 	const u8 *ie;
687 	u8 ie_len;
688 	enum {
689 		IEEE80211_MESH_SEC_NONE = 0x0,
690 		IEEE80211_MESH_SEC_AUTHED = 0x1,
691 		IEEE80211_MESH_SEC_SECURED = 0x2,
692 	} security;
693 	bool user_mpm;
694 	/* Extensible Synchronization Framework */
695 	const struct ieee80211_mesh_sync_ops *sync_ops;
696 	s64 sync_offset_clockdrift_max;
697 	spinlock_t sync_offset_lock;
698 	/* mesh power save */
699 	enum nl80211_mesh_power_mode nonpeer_pm;
700 	int ps_peers_light_sleep;
701 	int ps_peers_deep_sleep;
702 	struct ps_data ps;
703 	/* Channel Switching Support */
704 	struct mesh_csa_settings __rcu *csa;
705 	enum {
706 		IEEE80211_MESH_CSA_ROLE_NONE,
707 		IEEE80211_MESH_CSA_ROLE_INIT,
708 		IEEE80211_MESH_CSA_ROLE_REPEATER,
709 	} csa_role;
710 	u8 chsw_ttl;
711 	u16 pre_value;
712 
713 	/* offset from skb->data while building IE */
714 	int meshconf_offset;
715 
716 	struct mesh_table *mesh_paths;
717 	struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */
718 	int mesh_paths_generation;
719 	int mpp_paths_generation;
720 };
721 
722 #ifdef CONFIG_MAC80211_MESH
723 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name)	\
724 	do { (msh)->mshstats.name++; } while (0)
725 #else
726 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
727 	do { } while (0)
728 #endif
729 
730 /**
731  * enum ieee80211_sub_if_data_flags - virtual interface flags
732  *
733  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
734  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
735  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
736  *	associated stations and deliver multicast frames both
737  *	back to wireless media and to the local net stack.
738  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
739  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
740  */
741 enum ieee80211_sub_if_data_flags {
742 	IEEE80211_SDATA_ALLMULTI		= BIT(0),
743 	IEEE80211_SDATA_OPERATING_GMODE		= BIT(2),
744 	IEEE80211_SDATA_DONT_BRIDGE_PACKETS	= BIT(3),
745 	IEEE80211_SDATA_DISCONNECT_RESUME	= BIT(4),
746 	IEEE80211_SDATA_IN_DRIVER		= BIT(5),
747 };
748 
749 /**
750  * enum ieee80211_sdata_state_bits - virtual interface state bits
751  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
752  *	mirrors netif_running() but is separate for interface type
753  *	change handling while the interface is up
754  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
755  *	mode, so queues are stopped
756  * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
757  *	to offchannel, reset when offchannel returns
758  */
759 enum ieee80211_sdata_state_bits {
760 	SDATA_STATE_RUNNING,
761 	SDATA_STATE_OFFCHANNEL,
762 	SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
763 };
764 
765 /**
766  * enum ieee80211_chanctx_mode - channel context configuration mode
767  *
768  * @IEEE80211_CHANCTX_SHARED: channel context may be used by
769  *	multiple interfaces
770  * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
771  *	only by a single interface. This can be used for example for
772  *	non-fixed channel IBSS.
773  */
774 enum ieee80211_chanctx_mode {
775 	IEEE80211_CHANCTX_SHARED,
776 	IEEE80211_CHANCTX_EXCLUSIVE
777 };
778 
779 /**
780  * enum ieee80211_chanctx_replace_state - channel context replacement state
781  *
782  * This is used for channel context in-place reservations that require channel
783  * context switch/swap.
784  *
785  * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
786  * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
787  *	by a (not yet registered) channel context pointed by %replace_ctx.
788  * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
789  *	replaces an existing channel context pointed to by %replace_ctx.
790  */
791 enum ieee80211_chanctx_replace_state {
792 	IEEE80211_CHANCTX_REPLACE_NONE,
793 	IEEE80211_CHANCTX_WILL_BE_REPLACED,
794 	IEEE80211_CHANCTX_REPLACES_OTHER,
795 };
796 
797 struct ieee80211_chanctx {
798 	struct list_head list;
799 	struct rcu_head rcu_head;
800 
801 	struct list_head assigned_vifs;
802 	struct list_head reserved_vifs;
803 
804 	enum ieee80211_chanctx_replace_state replace_state;
805 	struct ieee80211_chanctx *replace_ctx;
806 
807 	enum ieee80211_chanctx_mode mode;
808 	bool driver_present;
809 
810 	struct ieee80211_chanctx_conf conf;
811 };
812 
813 struct mac80211_qos_map {
814 	struct cfg80211_qos_map qos_map;
815 	struct rcu_head rcu_head;
816 };
817 
818 enum txq_info_flags {
819 	IEEE80211_TXQ_STOP,
820 	IEEE80211_TXQ_AMPDU,
821 	IEEE80211_TXQ_NO_AMSDU,
822 	IEEE80211_TXQ_STOP_NETIF_TX,
823 };
824 
825 /**
826  * struct txq_info - per tid queue
827  *
828  * @tin: contains packets split into multiple flows
829  * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
830  *	a fq_flow which is already owned by a different tin
831  * @def_cvars: codel vars for @def_flow
832  * @frags: used to keep fragments created after dequeue
833  * @schedule_order: used with ieee80211_local->active_txqs
834  * @schedule_round: counter to prevent infinite loops on TXQ scheduling
835  */
836 struct txq_info {
837 	struct fq_tin tin;
838 	struct fq_flow def_flow;
839 	struct codel_vars def_cvars;
840 	struct codel_stats cstats;
841 	struct sk_buff_head frags;
842 	struct list_head schedule_order;
843 	u16 schedule_round;
844 	unsigned long flags;
845 
846 	/* keep last! */
847 	struct ieee80211_txq txq;
848 };
849 
850 struct ieee80211_if_mntr {
851 	u32 flags;
852 	u8 mu_follow_addr[ETH_ALEN] __aligned(2);
853 
854 	struct list_head list;
855 };
856 
857 /**
858  * struct ieee80211_if_nan - NAN state
859  *
860  * @conf: current NAN configuration
861  * @func_ids: a bitmap of available instance_id's
862  */
863 struct ieee80211_if_nan {
864 	struct cfg80211_nan_conf conf;
865 
866 	/* protects function_inst_ids */
867 	spinlock_t func_lock;
868 	struct idr function_inst_ids;
869 };
870 
871 struct ieee80211_sub_if_data {
872 	struct list_head list;
873 
874 	struct wireless_dev wdev;
875 
876 	/* keys */
877 	struct list_head key_list;
878 
879 	/* count for keys needing tailroom space allocation */
880 	int crypto_tx_tailroom_needed_cnt;
881 	int crypto_tx_tailroom_pending_dec;
882 	struct delayed_work dec_tailroom_needed_wk;
883 
884 	struct net_device *dev;
885 	struct ieee80211_local *local;
886 
887 	unsigned int flags;
888 
889 	unsigned long state;
890 
891 	char name[IFNAMSIZ];
892 
893 	/* Fragment table for host-based reassembly */
894 	struct ieee80211_fragment_entry	fragments[IEEE80211_FRAGMENT_MAX];
895 	unsigned int fragment_next;
896 
897 	/* TID bitmap for NoAck policy */
898 	u16 noack_map;
899 
900 	/* bit field of ACM bits (BIT(802.1D tag)) */
901 	u8 wmm_acm;
902 
903 	struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS +
904 					 NUM_DEFAULT_MGMT_KEYS +
905 					 NUM_DEFAULT_BEACON_KEYS];
906 	struct ieee80211_key __rcu *default_unicast_key;
907 	struct ieee80211_key __rcu *default_multicast_key;
908 	struct ieee80211_key __rcu *default_mgmt_key;
909 	struct ieee80211_key __rcu *default_beacon_key;
910 
911 	u16 sequence_number;
912 	__be16 control_port_protocol;
913 	bool control_port_no_encrypt;
914 	bool control_port_no_preauth;
915 	bool control_port_over_nl80211;
916 	int encrypt_headroom;
917 
918 	atomic_t num_tx_queued;
919 	struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
920 	struct mac80211_qos_map __rcu *qos_map;
921 
922 	struct work_struct csa_finalize_work;
923 	bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
924 	struct cfg80211_chan_def csa_chandef;
925 
926 	struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
927 	struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
928 
929 	/* context reservation -- protected with chanctx_mtx */
930 	struct ieee80211_chanctx *reserved_chanctx;
931 	struct cfg80211_chan_def reserved_chandef;
932 	bool reserved_radar_required;
933 	bool reserved_ready;
934 
935 	/* used to reconfigure hardware SM PS */
936 	struct work_struct recalc_smps;
937 
938 	struct work_struct work;
939 	struct sk_buff_head skb_queue;
940 
941 	u8 needed_rx_chains;
942 	enum ieee80211_smps_mode smps_mode;
943 
944 	int user_power_level; /* in dBm */
945 	int ap_power_level; /* in dBm */
946 
947 	bool radar_required;
948 	struct delayed_work dfs_cac_timer_work;
949 
950 	/*
951 	 * AP this belongs to: self in AP mode and
952 	 * corresponding AP in VLAN mode, NULL for
953 	 * all others (might be needed later in IBSS)
954 	 */
955 	struct ieee80211_if_ap *bss;
956 
957 	/* bitmap of allowed (non-MCS) rate indexes for rate control */
958 	u32 rc_rateidx_mask[NUM_NL80211_BANDS];
959 
960 	bool rc_has_mcs_mask[NUM_NL80211_BANDS];
961 	u8  rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
962 
963 	bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
964 	u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
965 
966 	/* Beacon frame (non-MCS) rate (as a bitmap) */
967 	u32 beacon_rateidx_mask[NUM_NL80211_BANDS];
968 	bool beacon_rate_set;
969 
970 	union {
971 		struct ieee80211_if_ap ap;
972 		struct ieee80211_if_wds wds;
973 		struct ieee80211_if_vlan vlan;
974 		struct ieee80211_if_managed mgd;
975 		struct ieee80211_if_ibss ibss;
976 		struct ieee80211_if_mesh mesh;
977 		struct ieee80211_if_ocb ocb;
978 		struct ieee80211_if_mntr mntr;
979 		struct ieee80211_if_nan nan;
980 	} u;
981 
982 #ifdef CONFIG_MAC80211_DEBUGFS
983 	struct {
984 		struct dentry *subdir_stations;
985 		struct dentry *default_unicast_key;
986 		struct dentry *default_multicast_key;
987 		struct dentry *default_mgmt_key;
988 		struct dentry *default_beacon_key;
989 	} debugfs;
990 #endif
991 
992 	bool hw_80211_encap;
993 
994 	/* must be last, dynamically sized area in this! */
995 	struct ieee80211_vif vif;
996 };
997 
998 static inline
999 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
1000 {
1001 	return container_of(p, struct ieee80211_sub_if_data, vif);
1002 }
1003 
1004 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
1005 	__acquires(&sdata->wdev.mtx)
1006 {
1007 	mutex_lock(&sdata->wdev.mtx);
1008 	__acquire(&sdata->wdev.mtx);
1009 }
1010 
1011 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
1012 	__releases(&sdata->wdev.mtx)
1013 {
1014 	mutex_unlock(&sdata->wdev.mtx);
1015 	__release(&sdata->wdev.mtx);
1016 }
1017 
1018 #define sdata_dereference(p, sdata) \
1019 	rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
1020 
1021 static inline void
1022 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
1023 {
1024 	lockdep_assert_held(&sdata->wdev.mtx);
1025 }
1026 
1027 static inline int
1028 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1029 {
1030 	switch (chandef->width) {
1031 	case NL80211_CHAN_WIDTH_5:
1032 		return 2;
1033 	case NL80211_CHAN_WIDTH_10:
1034 		return 1;
1035 	default:
1036 		return 0;
1037 	}
1038 }
1039 
1040 static inline int
1041 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1042 {
1043 	struct ieee80211_chanctx_conf *chanctx_conf;
1044 	int shift = 0;
1045 
1046 	rcu_read_lock();
1047 	chanctx_conf = rcu_dereference(vif->chanctx_conf);
1048 	if (chanctx_conf)
1049 		shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1050 	rcu_read_unlock();
1051 
1052 	return shift;
1053 }
1054 
1055 enum {
1056 	IEEE80211_RX_MSG	= 1,
1057 	IEEE80211_TX_STATUS_MSG	= 2,
1058 };
1059 
1060 enum queue_stop_reason {
1061 	IEEE80211_QUEUE_STOP_REASON_DRIVER,
1062 	IEEE80211_QUEUE_STOP_REASON_PS,
1063 	IEEE80211_QUEUE_STOP_REASON_CSA,
1064 	IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1065 	IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1066 	IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1067 	IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1068 	IEEE80211_QUEUE_STOP_REASON_FLUSH,
1069 	IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1070 	IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1071 
1072 	IEEE80211_QUEUE_STOP_REASONS,
1073 };
1074 
1075 #ifdef CONFIG_MAC80211_LEDS
1076 struct tpt_led_trigger {
1077 	char name[32];
1078 	const struct ieee80211_tpt_blink *blink_table;
1079 	unsigned int blink_table_len;
1080 	struct timer_list timer;
1081 	struct ieee80211_local *local;
1082 	unsigned long prev_traffic;
1083 	unsigned long tx_bytes, rx_bytes;
1084 	unsigned int active, want;
1085 	bool running;
1086 };
1087 #endif
1088 
1089 /**
1090  * mac80211 scan flags - currently active scan mode
1091  *
1092  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1093  *	well be on the operating channel
1094  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1095  *	determine if we are on the operating channel or not
1096  * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
1097  *	channel. This should not interrupt normal traffic.
1098  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1099  *	that the scan completed.
1100  * @SCAN_ABORTED: Set for our scan work function when the driver reported
1101  *	a scan complete for an aborted scan.
1102  * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1103  *	cancelled.
1104  */
1105 enum {
1106 	SCAN_SW_SCANNING,
1107 	SCAN_HW_SCANNING,
1108 	SCAN_ONCHANNEL_SCANNING,
1109 	SCAN_COMPLETED,
1110 	SCAN_ABORTED,
1111 	SCAN_HW_CANCELLED,
1112 };
1113 
1114 /**
1115  * enum mac80211_scan_state - scan state machine states
1116  *
1117  * @SCAN_DECISION: Main entry point to the scan state machine, this state
1118  *	determines if we should keep on scanning or switch back to the
1119  *	operating channel
1120  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1121  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1122  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1123  *	send out data
1124  * @SCAN_RESUME: Resume the scan and scan the next channel
1125  * @SCAN_ABORT: Abort the scan and go back to operating channel
1126  */
1127 enum mac80211_scan_state {
1128 	SCAN_DECISION,
1129 	SCAN_SET_CHANNEL,
1130 	SCAN_SEND_PROBE,
1131 	SCAN_SUSPEND,
1132 	SCAN_RESUME,
1133 	SCAN_ABORT,
1134 };
1135 
1136 struct ieee80211_local {
1137 	/* embed the driver visible part.
1138 	 * don't cast (use the static inlines below), but we keep
1139 	 * it first anyway so they become a no-op */
1140 	struct ieee80211_hw hw;
1141 
1142 	struct fq fq;
1143 	struct codel_vars *cvars;
1144 	struct codel_params cparams;
1145 
1146 	/* protects active_txqs and txqi->schedule_order */
1147 	spinlock_t active_txq_lock[IEEE80211_NUM_ACS];
1148 	struct list_head active_txqs[IEEE80211_NUM_ACS];
1149 	u16 schedule_round[IEEE80211_NUM_ACS];
1150 
1151 	u16 airtime_flags;
1152 	u32 aql_txq_limit_low[IEEE80211_NUM_ACS];
1153 	u32 aql_txq_limit_high[IEEE80211_NUM_ACS];
1154 	u32 aql_threshold;
1155 	atomic_t aql_total_pending_airtime;
1156 
1157 	const struct ieee80211_ops *ops;
1158 
1159 	/*
1160 	 * private workqueue to mac80211. mac80211 makes this accessible
1161 	 * via ieee80211_queue_work()
1162 	 */
1163 	struct workqueue_struct *workqueue;
1164 
1165 	unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1166 	int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1167 	/* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1168 	spinlock_t queue_stop_reason_lock;
1169 
1170 	int open_count;
1171 	int monitors, cooked_mntrs;
1172 	/* number of interfaces with corresponding FIF_ flags */
1173 	int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1174 	    fif_probe_req;
1175 	bool probe_req_reg;
1176 	bool rx_mcast_action_reg;
1177 	unsigned int filter_flags; /* FIF_* */
1178 
1179 	bool wiphy_ciphers_allocated;
1180 
1181 	bool use_chanctx;
1182 
1183 	/* protects the aggregated multicast list and filter calls */
1184 	spinlock_t filter_lock;
1185 
1186 	/* used for uploading changed mc list */
1187 	struct work_struct reconfig_filter;
1188 
1189 	/* aggregated multicast list */
1190 	struct netdev_hw_addr_list mc_list;
1191 
1192 	bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1193 
1194 	/*
1195 	 * suspended is true if we finished all the suspend _and_ we have
1196 	 * not yet come up from resume. This is to be used by mac80211
1197 	 * to ensure driver sanity during suspend and mac80211's own
1198 	 * sanity. It can eventually be used for WoW as well.
1199 	 */
1200 	bool suspended;
1201 
1202 	/*
1203 	 * Resuming is true while suspended, but when we're reprogramming the
1204 	 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1205 	 * again even though some other parts of the stack are still suspended
1206 	 * and we still drop received frames to avoid waking the stack.
1207 	 */
1208 	bool resuming;
1209 
1210 	/*
1211 	 * quiescing is true during the suspend process _only_ to
1212 	 * ease timer cancelling etc.
1213 	 */
1214 	bool quiescing;
1215 
1216 	/* device is started */
1217 	bool started;
1218 
1219 	/* device is during a HW reconfig */
1220 	bool in_reconfig;
1221 
1222 	/* wowlan is enabled -- don't reconfig on resume */
1223 	bool wowlan;
1224 
1225 	struct work_struct radar_detected_work;
1226 
1227 	/* number of RX chains the hardware has */
1228 	u8 rx_chains;
1229 
1230 	/* bitmap of which sbands were copied */
1231 	u8 sband_allocated;
1232 
1233 	int tx_headroom; /* required headroom for hardware/radiotap */
1234 
1235 	/* Tasklet and skb queue to process calls from IRQ mode. All frames
1236 	 * added to skb_queue will be processed, but frames in
1237 	 * skb_queue_unreliable may be dropped if the total length of these
1238 	 * queues increases over the limit. */
1239 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1240 	struct tasklet_struct tasklet;
1241 	struct sk_buff_head skb_queue;
1242 	struct sk_buff_head skb_queue_unreliable;
1243 
1244 	spinlock_t rx_path_lock;
1245 
1246 	/* Station data */
1247 	/*
1248 	 * The mutex only protects the list, hash table and
1249 	 * counter, reads are done with RCU.
1250 	 */
1251 	struct mutex sta_mtx;
1252 	spinlock_t tim_lock;
1253 	unsigned long num_sta;
1254 	struct list_head sta_list;
1255 	struct rhltable sta_hash;
1256 	struct timer_list sta_cleanup;
1257 	int sta_generation;
1258 
1259 	struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1260 	struct tasklet_struct tx_pending_tasklet;
1261 	struct tasklet_struct wake_txqs_tasklet;
1262 
1263 	atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1264 
1265 	/* number of interfaces with allmulti RX */
1266 	atomic_t iff_allmultis;
1267 
1268 	struct rate_control_ref *rate_ctrl;
1269 
1270 	struct arc4_ctx wep_tx_ctx;
1271 	struct arc4_ctx wep_rx_ctx;
1272 	u32 wep_iv;
1273 
1274 	/* see iface.c */
1275 	struct list_head interfaces;
1276 	struct list_head mon_list; /* only that are IFF_UP && !cooked */
1277 	struct mutex iflist_mtx;
1278 
1279 	/*
1280 	 * Key mutex, protects sdata's key_list and sta_info's
1281 	 * key pointers and ptk_idx (write access, they're RCU.)
1282 	 */
1283 	struct mutex key_mtx;
1284 
1285 	/* mutex for scan and work locking */
1286 	struct mutex mtx;
1287 
1288 	/* Scanning and BSS list */
1289 	unsigned long scanning;
1290 	struct cfg80211_ssid scan_ssid;
1291 	struct cfg80211_scan_request *int_scan_req;
1292 	struct cfg80211_scan_request __rcu *scan_req;
1293 	struct ieee80211_scan_request *hw_scan_req;
1294 	struct cfg80211_chan_def scan_chandef;
1295 	enum nl80211_band hw_scan_band;
1296 	int scan_channel_idx;
1297 	int scan_ies_len;
1298 	int hw_scan_ies_bufsize;
1299 	struct cfg80211_scan_info scan_info;
1300 
1301 	struct work_struct sched_scan_stopped_work;
1302 	struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1303 	struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1304 	u8 scan_addr[ETH_ALEN];
1305 
1306 	unsigned long leave_oper_channel_time;
1307 	enum mac80211_scan_state next_scan_state;
1308 	struct delayed_work scan_work;
1309 	struct ieee80211_sub_if_data __rcu *scan_sdata;
1310 	/* For backward compatibility only -- do not use */
1311 	struct cfg80211_chan_def _oper_chandef;
1312 
1313 	/* Temporary remain-on-channel for off-channel operations */
1314 	struct ieee80211_channel *tmp_channel;
1315 
1316 	/* channel contexts */
1317 	struct list_head chanctx_list;
1318 	struct mutex chanctx_mtx;
1319 
1320 #ifdef CONFIG_MAC80211_LEDS
1321 	struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1322 	struct led_trigger tpt_led;
1323 	atomic_t tx_led_active, rx_led_active, assoc_led_active;
1324 	atomic_t radio_led_active, tpt_led_active;
1325 	struct tpt_led_trigger *tpt_led_trigger;
1326 #endif
1327 
1328 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1329 	/* SNMP counters */
1330 	/* dot11CountersTable */
1331 	u32 dot11TransmittedFragmentCount;
1332 	u32 dot11MulticastTransmittedFrameCount;
1333 	u32 dot11FailedCount;
1334 	u32 dot11RetryCount;
1335 	u32 dot11MultipleRetryCount;
1336 	u32 dot11FrameDuplicateCount;
1337 	u32 dot11ReceivedFragmentCount;
1338 	u32 dot11MulticastReceivedFrameCount;
1339 	u32 dot11TransmittedFrameCount;
1340 
1341 	/* TX/RX handler statistics */
1342 	unsigned int tx_handlers_drop;
1343 	unsigned int tx_handlers_queued;
1344 	unsigned int tx_handlers_drop_wep;
1345 	unsigned int tx_handlers_drop_not_assoc;
1346 	unsigned int tx_handlers_drop_unauth_port;
1347 	unsigned int rx_handlers_drop;
1348 	unsigned int rx_handlers_queued;
1349 	unsigned int rx_handlers_drop_nullfunc;
1350 	unsigned int rx_handlers_drop_defrag;
1351 	unsigned int tx_expand_skb_head;
1352 	unsigned int tx_expand_skb_head_cloned;
1353 	unsigned int rx_expand_skb_head_defrag;
1354 	unsigned int rx_handlers_fragments;
1355 	unsigned int tx_status_drop;
1356 #define I802_DEBUG_INC(c) (c)++
1357 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1358 #define I802_DEBUG_INC(c) do { } while (0)
1359 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1360 
1361 
1362 	int total_ps_buffered; /* total number of all buffered unicast and
1363 				* multicast packets for power saving stations
1364 				*/
1365 
1366 	bool pspolling;
1367 	bool offchannel_ps_enabled;
1368 	/*
1369 	 * PS can only be enabled when we have exactly one managed
1370 	 * interface (and monitors) in PS, this then points there.
1371 	 */
1372 	struct ieee80211_sub_if_data *ps_sdata;
1373 	struct work_struct dynamic_ps_enable_work;
1374 	struct work_struct dynamic_ps_disable_work;
1375 	struct timer_list dynamic_ps_timer;
1376 	struct notifier_block ifa_notifier;
1377 	struct notifier_block ifa6_notifier;
1378 
1379 	/*
1380 	 * The dynamic ps timeout configured from user space via WEXT -
1381 	 * this will override whatever chosen by mac80211 internally.
1382 	 */
1383 	int dynamic_ps_forced_timeout;
1384 
1385 	int user_power_level; /* in dBm, for all interfaces */
1386 
1387 	enum ieee80211_smps_mode smps_mode;
1388 
1389 	struct work_struct restart_work;
1390 
1391 #ifdef CONFIG_MAC80211_DEBUGFS
1392 	struct local_debugfsdentries {
1393 		struct dentry *rcdir;
1394 		struct dentry *keys;
1395 	} debugfs;
1396 	bool force_tx_status;
1397 #endif
1398 
1399 	/*
1400 	 * Remain-on-channel support
1401 	 */
1402 	struct delayed_work roc_work;
1403 	struct list_head roc_list;
1404 	struct work_struct hw_roc_start, hw_roc_done;
1405 	unsigned long hw_roc_start_time;
1406 	u64 roc_cookie_counter;
1407 
1408 	struct idr ack_status_frames;
1409 	spinlock_t ack_status_lock;
1410 
1411 	struct ieee80211_sub_if_data __rcu *p2p_sdata;
1412 
1413 	/* virtual monitor interface */
1414 	struct ieee80211_sub_if_data __rcu *monitor_sdata;
1415 	struct cfg80211_chan_def monitor_chandef;
1416 
1417 	/* extended capabilities provided by mac80211 */
1418 	u8 ext_capa[8];
1419 
1420 	/* TDLS channel switch */
1421 	struct work_struct tdls_chsw_work;
1422 	struct sk_buff_head skb_queue_tdls_chsw;
1423 };
1424 
1425 static inline struct ieee80211_sub_if_data *
1426 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1427 {
1428 	return netdev_priv(dev);
1429 }
1430 
1431 static inline struct ieee80211_sub_if_data *
1432 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1433 {
1434 	return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1435 }
1436 
1437 static inline struct ieee80211_supported_band *
1438 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1439 {
1440 	struct ieee80211_local *local = sdata->local;
1441 	struct ieee80211_chanctx_conf *chanctx_conf;
1442 	enum nl80211_band band;
1443 
1444 	rcu_read_lock();
1445 	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1446 
1447 	if (WARN_ON_ONCE(!chanctx_conf)) {
1448 		rcu_read_unlock();
1449 		return NULL;
1450 	}
1451 
1452 	band = chanctx_conf->def.chan->band;
1453 	rcu_read_unlock();
1454 
1455 	return local->hw.wiphy->bands[band];
1456 }
1457 
1458 /* this struct holds the value parsing from channel switch IE  */
1459 struct ieee80211_csa_ie {
1460 	struct cfg80211_chan_def chandef;
1461 	u8 mode;
1462 	u8 count;
1463 	u8 ttl;
1464 	u16 pre_value;
1465 	u16 reason_code;
1466 	u32 max_switch_time;
1467 };
1468 
1469 /* Parsed Information Elements */
1470 struct ieee802_11_elems {
1471 	const u8 *ie_start;
1472 	size_t total_len;
1473 
1474 	/* pointers to IEs */
1475 	const struct ieee80211_tdls_lnkie *lnk_id;
1476 	const struct ieee80211_ch_switch_timing *ch_sw_timing;
1477 	const u8 *ext_capab;
1478 	const u8 *ssid;
1479 	const u8 *supp_rates;
1480 	const u8 *ds_params;
1481 	const struct ieee80211_tim_ie *tim;
1482 	const u8 *challenge;
1483 	const u8 *rsn;
1484 	const u8 *rsnx;
1485 	const u8 *erp_info;
1486 	const u8 *ext_supp_rates;
1487 	const u8 *wmm_info;
1488 	const u8 *wmm_param;
1489 	const struct ieee80211_ht_cap *ht_cap_elem;
1490 	const struct ieee80211_ht_operation *ht_operation;
1491 	const struct ieee80211_vht_cap *vht_cap_elem;
1492 	const struct ieee80211_vht_operation *vht_operation;
1493 	const struct ieee80211_meshconf_ie *mesh_config;
1494 	const u8 *he_cap;
1495 	const struct ieee80211_he_operation *he_operation;
1496 	const struct ieee80211_he_spr *he_spr;
1497 	const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1498 	const struct ieee80211_he_6ghz_capa *he_6ghz_capa;
1499 	const u8 *uora_element;
1500 	const u8 *mesh_id;
1501 	const u8 *peering;
1502 	const __le16 *awake_window;
1503 	const u8 *preq;
1504 	const u8 *prep;
1505 	const u8 *perr;
1506 	const struct ieee80211_rann_ie *rann;
1507 	const struct ieee80211_channel_sw_ie *ch_switch_ie;
1508 	const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1509 	const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1510 	const u8 *max_channel_switch_time;
1511 	const u8 *country_elem;
1512 	const u8 *pwr_constr_elem;
1513 	const u8 *cisco_dtpc_elem;
1514 	const struct ieee80211_timeout_interval_ie *timeout_int;
1515 	const u8 *opmode_notif;
1516 	const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1517 	struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1518 	const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1519 	const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
1520 	const struct ieee80211_bssid_index *bssid_index;
1521 	u8 max_bssid_indicator;
1522 	u8 dtim_count;
1523 	u8 dtim_period;
1524 	const struct ieee80211_addba_ext_ie *addba_ext_ie;
1525 
1526 	/* length of them, respectively */
1527 	u8 ext_capab_len;
1528 	u8 ssid_len;
1529 	u8 supp_rates_len;
1530 	u8 tim_len;
1531 	u8 challenge_len;
1532 	u8 rsn_len;
1533 	u8 rsnx_len;
1534 	u8 ext_supp_rates_len;
1535 	u8 wmm_info_len;
1536 	u8 wmm_param_len;
1537 	u8 he_cap_len;
1538 	u8 mesh_id_len;
1539 	u8 peering_len;
1540 	u8 preq_len;
1541 	u8 prep_len;
1542 	u8 perr_len;
1543 	u8 country_elem_len;
1544 	u8 bssid_index_len;
1545 
1546 	/* whether a parse error occurred while retrieving these elements */
1547 	bool parse_error;
1548 };
1549 
1550 static inline struct ieee80211_local *hw_to_local(
1551 	struct ieee80211_hw *hw)
1552 {
1553 	return container_of(hw, struct ieee80211_local, hw);
1554 }
1555 
1556 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1557 {
1558 	return container_of(txq, struct txq_info, txq);
1559 }
1560 
1561 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1562 {
1563 	struct txq_info *txqi = to_txq_info(txq);
1564 
1565 	return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1566 }
1567 
1568 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1569 {
1570 	return ether_addr_equal(raddr, addr) ||
1571 	       is_broadcast_ether_addr(raddr);
1572 }
1573 
1574 static inline bool
1575 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1576 {
1577 	WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1578 		     status->flag & RX_FLAG_MACTIME_END);
1579 	if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END))
1580 		return true;
1581 	/* can't handle non-legacy preamble yet */
1582 	if (status->flag & RX_FLAG_MACTIME_PLCP_START &&
1583 	    status->encoding == RX_ENC_LEGACY)
1584 		return true;
1585 	return false;
1586 }
1587 
1588 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1589 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1590 
1591 /* This function returns the number of multicast stations connected to this
1592  * interface. It returns -1 if that number is not tracked, that is for netdevs
1593  * not in AP or AP_VLAN mode or when using 4addr.
1594  */
1595 static inline int
1596 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1597 {
1598 	if (sdata->vif.type == NL80211_IFTYPE_AP)
1599 		return atomic_read(&sdata->u.ap.num_mcast_sta);
1600 	if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1601 		return atomic_read(&sdata->u.vlan.num_mcast_sta);
1602 	return -1;
1603 }
1604 
1605 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1606 				     struct ieee80211_rx_status *status,
1607 				     unsigned int mpdu_len,
1608 				     unsigned int mpdu_offset);
1609 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1610 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1611 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1612 				      u32 changed);
1613 void ieee80211_configure_filter(struct ieee80211_local *local);
1614 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1615 
1616 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1617 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1618 			     u64 *cookie, gfp_t gfp);
1619 
1620 void ieee80211_check_fast_rx(struct sta_info *sta);
1621 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1622 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1623 void ieee80211_clear_fast_rx(struct sta_info *sta);
1624 
1625 /* STA code */
1626 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1627 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1628 		       struct cfg80211_auth_request *req);
1629 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1630 			struct cfg80211_assoc_request *req);
1631 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1632 			 struct cfg80211_deauth_request *req);
1633 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1634 			   struct cfg80211_disassoc_request *req);
1635 void ieee80211_send_pspoll(struct ieee80211_local *local,
1636 			   struct ieee80211_sub_if_data *sdata);
1637 void ieee80211_recalc_ps(struct ieee80211_local *local);
1638 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1639 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1640 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1641 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1642 				  struct sk_buff *skb);
1643 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1644 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1645 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1646 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1647 				  __le16 fc, bool acked);
1648 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1649 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1650 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1651 
1652 /* IBSS code */
1653 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1654 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1655 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1656 			      const u8 *bssid, const u8 *addr, u32 supp_rates);
1657 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1658 			struct cfg80211_ibss_params *params);
1659 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1660 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1661 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1662 				   struct sk_buff *skb);
1663 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1664 			      struct cfg80211_csa_settings *csa_settings);
1665 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1666 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1667 
1668 /* OCB code */
1669 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1670 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1671 			     const u8 *bssid, const u8 *addr, u32 supp_rates);
1672 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1673 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1674 		       struct ocb_setup *setup);
1675 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1676 
1677 /* mesh code */
1678 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1679 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1680 				   struct sk_buff *skb);
1681 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1682 			      struct cfg80211_csa_settings *csa_settings);
1683 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1684 
1685 /* scan/BSS handling */
1686 void ieee80211_scan_work(struct work_struct *work);
1687 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1688 				const u8 *ssid, u8 ssid_len,
1689 				struct ieee80211_channel **channels,
1690 				unsigned int n_channels,
1691 				enum nl80211_bss_scan_width scan_width);
1692 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1693 			   struct cfg80211_scan_request *req);
1694 void ieee80211_scan_cancel(struct ieee80211_local *local);
1695 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1696 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1697 
1698 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1699 struct ieee80211_bss *
1700 ieee80211_bss_info_update(struct ieee80211_local *local,
1701 			  struct ieee80211_rx_status *rx_status,
1702 			  struct ieee80211_mgmt *mgmt,
1703 			  size_t len,
1704 			  struct ieee80211_channel *channel);
1705 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1706 			  struct ieee80211_bss *bss);
1707 
1708 /* scheduled scan handling */
1709 int
1710 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1711 				     struct cfg80211_sched_scan_request *req);
1712 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1713 				       struct cfg80211_sched_scan_request *req);
1714 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1715 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1716 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1717 
1718 /* off-channel/mgmt-tx */
1719 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1720 void ieee80211_offchannel_return(struct ieee80211_local *local);
1721 void ieee80211_roc_setup(struct ieee80211_local *local);
1722 void ieee80211_start_next_roc(struct ieee80211_local *local);
1723 void ieee80211_roc_purge(struct ieee80211_local *local,
1724 			 struct ieee80211_sub_if_data *sdata);
1725 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1726 				struct ieee80211_channel *chan,
1727 				unsigned int duration, u64 *cookie);
1728 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1729 				       struct wireless_dev *wdev, u64 cookie);
1730 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1731 		      struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1732 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1733 				  struct wireless_dev *wdev, u64 cookie);
1734 
1735 /* channel switch handling */
1736 void ieee80211_csa_finalize_work(struct work_struct *work);
1737 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1738 			     struct cfg80211_csa_settings *params);
1739 
1740 /* interface handling */
1741 #define MAC80211_SUPPORTED_FEATURES_TX	(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
1742 					 NETIF_F_HW_CSUM | NETIF_F_SG | \
1743 					 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE)
1744 #define MAC80211_SUPPORTED_FEATURES_RX	(NETIF_F_RXCSUM)
1745 #define MAC80211_SUPPORTED_FEATURES	(MAC80211_SUPPORTED_FEATURES_TX | \
1746 					 MAC80211_SUPPORTED_FEATURES_RX)
1747 
1748 int ieee80211_iface_init(void);
1749 void ieee80211_iface_exit(void);
1750 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1751 		     unsigned char name_assign_type,
1752 		     struct wireless_dev **new_wdev, enum nl80211_iftype type,
1753 		     struct vif_params *params);
1754 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1755 			     enum nl80211_iftype type);
1756 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1757 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1758 u32 ieee80211_idle_off(struct ieee80211_local *local);
1759 void ieee80211_recalc_idle(struct ieee80211_local *local);
1760 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1761 				    const int offset);
1762 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1763 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1764 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1765 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1766 
1767 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1768 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1769 			      bool update_bss);
1770 
1771 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1772 {
1773 	return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1774 }
1775 
1776 /* tx handling */
1777 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1778 void ieee80211_tx_pending(unsigned long data);
1779 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1780 					 struct net_device *dev);
1781 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1782 				       struct net_device *dev);
1783 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb,
1784 					    struct net_device *dev);
1785 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1786 				  struct net_device *dev,
1787 				  u32 info_flags,
1788 				  u32 ctrl_flags,
1789 				  u64 *cookie);
1790 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1791 			      struct sk_buff_head *skbs);
1792 struct sk_buff *
1793 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1794 			      struct sk_buff *skb, u32 info_flags);
1795 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1796 			  struct ieee80211_supported_band *sband,
1797 			  int retry_count, int shift, bool send_to_cooked,
1798 			  struct ieee80211_tx_status *status);
1799 
1800 void ieee80211_check_fast_xmit(struct sta_info *sta);
1801 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1802 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1803 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1804 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
1805 			      const u8 *buf, size_t len,
1806 			      const u8 *dest, __be16 proto, bool unencrypted,
1807 			      u64 *cookie);
1808 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
1809 			      const u8 *buf, size_t len);
1810 
1811 /* HT */
1812 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1813 				     struct ieee80211_sta_ht_cap *ht_cap);
1814 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1815 				       struct ieee80211_supported_band *sband,
1816 				       const struct ieee80211_ht_cap *ht_cap_ie,
1817 				       struct sta_info *sta);
1818 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1819 			  const u8 *da, u16 tid,
1820 			  u16 initiator, u16 reason_code);
1821 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1822 			       enum ieee80211_smps_mode smps, const u8 *da,
1823 			       const u8 *bssid);
1824 void ieee80211_request_smps_ap_work(struct work_struct *work);
1825 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1826 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1827 				   enum ieee80211_smps_mode smps_mode_new);
1828 
1829 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1830 				     u16 initiator, u16 reason, bool stop);
1831 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1832 				    u16 initiator, u16 reason, bool stop);
1833 void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
1834 				      u8 dialog_token, u16 timeout,
1835 				      u16 start_seq_num, u16 ba_policy, u16 tid,
1836 				      u16 buf_size, bool tx, bool auto_seq,
1837 				      const struct ieee80211_addba_ext_ie *addbaext);
1838 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1839 					 enum ieee80211_agg_stop_reason reason);
1840 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1841 			     struct sta_info *sta,
1842 			     struct ieee80211_mgmt *mgmt, size_t len);
1843 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1844 				  struct sta_info *sta,
1845 				  struct ieee80211_mgmt *mgmt,
1846 				  size_t len);
1847 void ieee80211_process_addba_request(struct ieee80211_local *local,
1848 				     struct sta_info *sta,
1849 				     struct ieee80211_mgmt *mgmt,
1850 				     size_t len);
1851 
1852 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1853 				   enum ieee80211_agg_stop_reason reason);
1854 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1855 				    enum ieee80211_agg_stop_reason reason);
1856 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
1857 			      struct tid_ampdu_tx *tid_tx);
1858 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
1859 			     struct tid_ampdu_tx *tid_tx);
1860 void ieee80211_ba_session_work(struct work_struct *work);
1861 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1862 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1863 
1864 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1865 enum nl80211_smps_mode
1866 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
1867 
1868 /* VHT */
1869 void
1870 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1871 				    struct ieee80211_supported_band *sband,
1872 				    const struct ieee80211_vht_cap *vht_cap_ie,
1873 				    struct sta_info *sta);
1874 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1875 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1876 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1877 enum ieee80211_sta_rx_bandwidth
1878 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
1879 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
1880 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1881 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
1882 				 struct ieee80211_mgmt *mgmt);
1883 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1884                                   struct sta_info *sta, u8 opmode,
1885 				  enum nl80211_band band);
1886 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1887 				 struct sta_info *sta, u8 opmode,
1888 				 enum nl80211_band band);
1889 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1890 				      struct ieee80211_sta_vht_cap *vht_cap);
1891 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
1892 				     u16 vht_mask[NL80211_VHT_NSS_MAX]);
1893 enum nl80211_chan_width
1894 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta);
1895 
1896 /* HE */
1897 void
1898 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
1899 				  struct ieee80211_supported_band *sband,
1900 				  const u8 *he_cap_ie, u8 he_cap_len,
1901 				  const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
1902 				  struct sta_info *sta);
1903 void
1904 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
1905 				const struct ieee80211_he_spr *he_spr_ie_elem);
1906 
1907 void
1908 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
1909 			const struct ieee80211_he_operation *he_op_ie_elem);
1910 
1911 /* Spectrum management */
1912 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1913 				       struct ieee80211_mgmt *mgmt,
1914 				       size_t len);
1915 /**
1916  * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1917  * @sdata: the sdata of the interface which has received the frame
1918  * @elems: parsed 802.11 elements received with the frame
1919  * @current_band: indicates the current band
1920  * @vht_cap_info: VHT capabilities of the transmitter
1921  * @sta_flags: contains information about own capabilities and restrictions
1922  *	to decide which channel switch announcements can be accepted. Only the
1923  *	following subset of &enum ieee80211_sta_flags are evaluated:
1924  *	%IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1925  *	%IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1926  *	%IEEE80211_STA_DISABLE_160MHZ.
1927  * @bssid: the currently connected bssid (for reporting)
1928  * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1929 	All of them will be filled with if success only.
1930  * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1931  */
1932 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1933 				 struct ieee802_11_elems *elems,
1934 				 enum nl80211_band current_band,
1935 				 u32 vht_cap_info,
1936 				 u32 sta_flags, u8 *bssid,
1937 				 struct ieee80211_csa_ie *csa_ie);
1938 
1939 /* Suspend/resume and hw reconfiguration */
1940 int ieee80211_reconfig(struct ieee80211_local *local);
1941 void ieee80211_stop_device(struct ieee80211_local *local);
1942 
1943 int __ieee80211_suspend(struct ieee80211_hw *hw,
1944 			struct cfg80211_wowlan *wowlan);
1945 
1946 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1947 {
1948 	struct ieee80211_local *local = hw_to_local(hw);
1949 
1950 	WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
1951 	     !test_bit(SCAN_COMPLETED, &local->scanning),
1952 		"%s: resume with hardware scan still in progress\n",
1953 		wiphy_name(hw->wiphy));
1954 
1955 	return ieee80211_reconfig(hw_to_local(hw));
1956 }
1957 
1958 /* utility functions/constants */
1959 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1960 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
1961 			     int rate, int erp, int short_preamble,
1962 			     int shift);
1963 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1964 					   struct ieee80211_tx_queue_params *qparam,
1965 					   int ac);
1966 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1967 			       bool bss_notify, bool enable_qos);
1968 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
1969 		    struct sta_info *sta, struct sk_buff *skb);
1970 
1971 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1972 				 struct sk_buff *skb, int tid,
1973 				 enum nl80211_band band);
1974 
1975 /* sta_out needs to be checked for ERR_PTR() before using */
1976 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata,
1977 			    struct sk_buff *skb,
1978 			    struct sta_info **sta_out);
1979 
1980 static inline void
1981 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1982 			  struct sk_buff *skb, int tid,
1983 			  enum nl80211_band band)
1984 {
1985 	rcu_read_lock();
1986 	__ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1987 	rcu_read_unlock();
1988 }
1989 
1990 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1991 					struct sk_buff *skb, int tid)
1992 {
1993 	struct ieee80211_chanctx_conf *chanctx_conf;
1994 
1995 	rcu_read_lock();
1996 	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1997 	if (WARN_ON(!chanctx_conf)) {
1998 		rcu_read_unlock();
1999 		kfree_skb(skb);
2000 		return;
2001 	}
2002 
2003 	__ieee80211_tx_skb_tid_band(sdata, skb, tid,
2004 				    chanctx_conf->def.chan->band);
2005 	rcu_read_unlock();
2006 }
2007 
2008 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
2009 				    struct sk_buff *skb)
2010 {
2011 	/* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
2012 	ieee80211_tx_skb_tid(sdata, skb, 7);
2013 }
2014 
2015 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
2016 			       struct ieee802_11_elems *elems,
2017 			       u64 filter, u32 crc, u8 *transmitter_bssid,
2018 			       u8 *bss_bssid);
2019 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
2020 					  bool action,
2021 					  struct ieee802_11_elems *elems,
2022 					  u8 *transmitter_bssid,
2023 					  u8 *bss_bssid)
2024 {
2025 	ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0,
2026 				   transmitter_bssid, bss_bssid);
2027 }
2028 
2029 
2030 extern const int ieee802_1d_to_ac[8];
2031 
2032 static inline int ieee80211_ac_from_tid(int tid)
2033 {
2034 	return ieee802_1d_to_ac[tid & 7];
2035 }
2036 
2037 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
2038 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
2039 void ieee80211_dynamic_ps_timer(struct timer_list *t);
2040 void ieee80211_send_nullfunc(struct ieee80211_local *local,
2041 			     struct ieee80211_sub_if_data *sdata,
2042 			     bool powersave);
2043 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
2044 			     struct ieee80211_hdr *hdr);
2045 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2046 			     struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
2047 
2048 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
2049 				     unsigned long queues,
2050 				     enum queue_stop_reason reason,
2051 				     bool refcounted);
2052 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
2053 			       struct ieee80211_sub_if_data *sdata,
2054 			       enum queue_stop_reason reason);
2055 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
2056 			       struct ieee80211_sub_if_data *sdata,
2057 			       enum queue_stop_reason reason);
2058 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
2059 				     unsigned long queues,
2060 				     enum queue_stop_reason reason,
2061 				     bool refcounted);
2062 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
2063 				    enum queue_stop_reason reason,
2064 				    bool refcounted);
2065 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
2066 				    enum queue_stop_reason reason,
2067 				    bool refcounted);
2068 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
2069 void ieee80211_add_pending_skb(struct ieee80211_local *local,
2070 			       struct sk_buff *skb);
2071 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
2072 				struct sk_buff_head *skbs);
2073 void ieee80211_flush_queues(struct ieee80211_local *local,
2074 			    struct ieee80211_sub_if_data *sdata, bool drop);
2075 void __ieee80211_flush_queues(struct ieee80211_local *local,
2076 			      struct ieee80211_sub_if_data *sdata,
2077 			      unsigned int queues, bool drop);
2078 
2079 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2080 {
2081 	/*
2082 	 * It's unsafe to try to do any work during reconfigure flow.
2083 	 * When the flow ends the work will be requeued.
2084 	 */
2085 	if (local->in_reconfig)
2086 		return false;
2087 
2088 	/*
2089 	 * If quiescing is set, we are racing with __ieee80211_suspend.
2090 	 * __ieee80211_suspend flushes the workers after setting quiescing,
2091 	 * and we check quiescing / suspended before enqueing new workers.
2092 	 * We should abort the worker to avoid the races below.
2093 	 */
2094 	if (local->quiescing)
2095 		return false;
2096 
2097 	/*
2098 	 * We might already be suspended if the following scenario occurs:
2099 	 * __ieee80211_suspend		Control path
2100 	 *
2101 	 *				if (local->quiescing)
2102 	 *					return;
2103 	 * local->quiescing = true;
2104 	 * flush_workqueue();
2105 	 *				queue_work(...);
2106 	 * local->suspended = true;
2107 	 * local->quiescing = false;
2108 	 *				worker starts running...
2109 	 */
2110 	if (local->suspended)
2111 		return false;
2112 
2113 	return true;
2114 }
2115 
2116 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2117 void ieee80211_txq_set_params(struct ieee80211_local *local);
2118 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2119 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2120 			struct sta_info *sta,
2121 			struct txq_info *txq, int tid);
2122 void ieee80211_txq_purge(struct ieee80211_local *local,
2123 			 struct txq_info *txqi);
2124 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2125 			       struct ieee80211_sub_if_data *sdata);
2126 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2127 			      struct txq_info *txqi);
2128 void ieee80211_wake_txqs(unsigned long data);
2129 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2130 			 u16 transaction, u16 auth_alg, u16 status,
2131 			 const u8 *extra, size_t extra_len, const u8 *bssid,
2132 			 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2133 			 u32 tx_flags);
2134 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2135 				    const u8 *da, const u8 *bssid,
2136 				    u16 stype, u16 reason,
2137 				    bool send_frame, u8 *frame_buf);
2138 
2139 enum {
2140 	IEEE80211_PROBE_FLAG_DIRECTED		= BIT(0),
2141 	IEEE80211_PROBE_FLAG_MIN_CONTENT	= BIT(1),
2142 	IEEE80211_PROBE_FLAG_RANDOM_SN		= BIT(2),
2143 };
2144 
2145 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2146 			     size_t buffer_len,
2147 			     struct ieee80211_scan_ies *ie_desc,
2148 			     const u8 *ie, size_t ie_len,
2149 			     u8 bands_used, u32 *rate_masks,
2150 			     struct cfg80211_chan_def *chandef,
2151 			     u32 flags);
2152 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2153 					  const u8 *src, const u8 *dst,
2154 					  u32 ratemask,
2155 					  struct ieee80211_channel *chan,
2156 					  const u8 *ssid, size_t ssid_len,
2157 					  const u8 *ie, size_t ie_len,
2158 					  u32 flags);
2159 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2160 			    struct ieee802_11_elems *elems,
2161 			    enum nl80211_band band, u32 *basic_rates);
2162 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2163 				 enum ieee80211_smps_mode smps_mode);
2164 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
2165 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
2166 
2167 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2168 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2169 			      u16 cap);
2170 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2171 			       const struct cfg80211_chan_def *chandef,
2172 			       u16 prot_mode, bool rifs_mode);
2173 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2174 				   const struct cfg80211_chan_def *chandef);
2175 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2176 			       u32 cap);
2177 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2178 				const struct cfg80211_chan_def *chandef);
2179 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2180 u8 *ieee80211_ie_build_he_cap(u8 *pos,
2181 			      const struct ieee80211_sta_he_cap *he_cap,
2182 			      u8 *end);
2183 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2184 				    struct sk_buff *skb);
2185 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef);
2186 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2187 			     const struct ieee80211_supported_band *sband,
2188 			     const u8 *srates, int srates_len, u32 *rates);
2189 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2190 			    struct sk_buff *skb, bool need_basic,
2191 			    enum nl80211_band band);
2192 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2193 				struct sk_buff *skb, bool need_basic,
2194 				enum nl80211_band band);
2195 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2196 
2197 /* channel management */
2198 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2199 			       struct cfg80211_chan_def *chandef);
2200 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
2201 				const struct ieee80211_vht_operation *oper,
2202 				const struct ieee80211_ht_operation *htop,
2203 				struct cfg80211_chan_def *chandef);
2204 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
2205 				    const struct ieee80211_he_operation *he_oper,
2206 				    struct cfg80211_chan_def *chandef);
2207 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2208 
2209 int __must_check
2210 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
2211 			  const struct cfg80211_chan_def *chandef,
2212 			  enum ieee80211_chanctx_mode mode);
2213 int __must_check
2214 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
2215 			      const struct cfg80211_chan_def *chandef,
2216 			      enum ieee80211_chanctx_mode mode,
2217 			      bool radar_required);
2218 int __must_check
2219 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2220 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2221 
2222 int __must_check
2223 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2224 			       const struct cfg80211_chan_def *chandef,
2225 			       u32 *changed);
2226 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2227 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2228 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2229 					 bool clear);
2230 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2231 			       struct ieee80211_chanctx *ctx);
2232 
2233 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2234 				   struct ieee80211_chanctx *chanctx);
2235 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2236 				      struct ieee80211_chanctx *ctx);
2237 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2238 
2239 void ieee80211_dfs_cac_timer(unsigned long data);
2240 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2241 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2242 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2243 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2244 			      struct cfg80211_csa_settings *csa_settings);
2245 
2246 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2247 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2248 const struct ieee80211_cipher_scheme *
2249 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2250 		 enum nl80211_iftype iftype);
2251 int ieee80211_cs_headroom(struct ieee80211_local *local,
2252 			  struct cfg80211_crypto_settings *crypto,
2253 			  enum nl80211_iftype iftype);
2254 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2255 			   struct ieee80211_sub_if_data *sdata);
2256 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2257 				 const struct cfg80211_chan_def *chandef,
2258 				 enum ieee80211_chanctx_mode chanmode,
2259 				 u8 radar_detect);
2260 int ieee80211_max_num_channels(struct ieee80211_local *local);
2261 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta);
2262 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2263 				       struct ieee80211_chanctx *ctx);
2264 
2265 /* TDLS */
2266 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2267 			const u8 *peer, u8 action_code, u8 dialog_token,
2268 			u16 status_code, u32 peer_capability,
2269 			bool initiator, const u8 *extra_ies,
2270 			size_t extra_ies_len);
2271 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2272 			const u8 *peer, enum nl80211_tdls_operation oper);
2273 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2274 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2275 				  const u8 *addr, u8 oper_class,
2276 				  struct cfg80211_chan_def *chandef);
2277 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2278 					  struct net_device *dev,
2279 					  const u8 *addr);
2280 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2281 void ieee80211_tdls_chsw_work(struct work_struct *wk);
2282 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2283 				      const u8 *peer, u16 reason);
2284 const char *ieee80211_get_reason_code_string(u16 reason_code);
2285 
2286 extern const struct ethtool_ops ieee80211_ethtool_ops;
2287 
2288 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw,
2289 				       struct ieee80211_vif *vif,
2290 				       struct ieee80211_sta *pubsta,
2291 				       int len, bool ampdu);
2292 #ifdef CONFIG_MAC80211_NOINLINE
2293 #define debug_noinline noinline
2294 #else
2295 #define debug_noinline
2296 #endif
2297 
2298 #endif /* IEEE80211_I_H */
2299