xref: /linux/net/mac80211/ieee80211_i.h (revision 39f75da7bcc829ddc4d40bb60d0e95520de7898b)
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) 2018-2021 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 /* power level hasn't been configured (or set to automatic) */
54 #define IEEE80211_UNSET_POWER_LEVEL	INT_MIN
55 
56 /*
57  * Some APs experience problems when working with U-APSD. Decreasing the
58  * probability of that happening by using legacy mode for all ACs but VO isn't
59  * enough.
60  *
61  * Cisco 4410N originally forced us to enable VO by default only because it
62  * treated non-VO ACs as legacy.
63  *
64  * However some APs (notably Netgear R7000) silently reclassify packets to
65  * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
66  * clients would never see some frames (e.g. ARP responses) or would fetch them
67  * accidentally after a long time.
68  *
69  * It makes little sense to enable u-APSD queues by default because it needs
70  * userspace applications to be aware of it to actually take advantage of the
71  * possible additional powersavings. Implicitly depending on driver autotrigger
72  * frame support doesn't make much sense.
73  */
74 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
75 
76 #define IEEE80211_DEFAULT_MAX_SP_LEN		\
77 	IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
78 
79 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS];
80 
81 #define IEEE80211_DEAUTH_FRAME_LEN	(24 /* hdr */ + 2 /* reason */)
82 
83 #define IEEE80211_MAX_NAN_INSTANCE_ID 255
84 
85 struct ieee80211_bss {
86 	u32 device_ts_beacon, device_ts_presp;
87 
88 	bool wmm_used;
89 	bool uapsd_supported;
90 
91 #define IEEE80211_MAX_SUPP_RATES 32
92 	u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
93 	size_t supp_rates_len;
94 	struct ieee80211_rate *beacon_rate;
95 
96 	u32 vht_cap_info;
97 
98 	/*
99 	 * During association, we save an ERP value from a probe response so
100 	 * that we can feed ERP info to the driver when handling the
101 	 * association completes. these fields probably won't be up-to-date
102 	 * otherwise, you probably don't want to use them.
103 	 */
104 	bool has_erp_value;
105 	u8 erp_value;
106 
107 	/* Keep track of the corruption of the last beacon/probe response. */
108 	u8 corrupt_data;
109 
110 	/* Keep track of what bits of information we have valid info for. */
111 	u8 valid_data;
112 };
113 
114 /**
115  * enum ieee80211_corrupt_data_flags - BSS data corruption flags
116  * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
117  * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
118  *
119  * These are bss flags that are attached to a bss in the
120  * @corrupt_data field of &struct ieee80211_bss.
121  */
122 enum ieee80211_bss_corrupt_data_flags {
123 	IEEE80211_BSS_CORRUPT_BEACON		= BIT(0),
124 	IEEE80211_BSS_CORRUPT_PROBE_RESP	= BIT(1)
125 };
126 
127 /**
128  * enum ieee80211_valid_data_flags - BSS valid data flags
129  * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
130  * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
131  * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
132  *
133  * These are bss flags that are attached to a bss in the
134  * @valid_data field of &struct ieee80211_bss.  They show which parts
135  * of the data structure were received as a result of an un-corrupted
136  * beacon/probe response.
137  */
138 enum ieee80211_bss_valid_data_flags {
139 	IEEE80211_BSS_VALID_WMM			= BIT(1),
140 	IEEE80211_BSS_VALID_RATES		= BIT(2),
141 	IEEE80211_BSS_VALID_ERP			= BIT(3)
142 };
143 
144 typedef unsigned __bitwise ieee80211_tx_result;
145 #define TX_CONTINUE	((__force ieee80211_tx_result) 0u)
146 #define TX_DROP		((__force ieee80211_tx_result) 1u)
147 #define TX_QUEUED	((__force ieee80211_tx_result) 2u)
148 
149 #define IEEE80211_TX_UNICAST		BIT(1)
150 #define IEEE80211_TX_PS_BUFFERED	BIT(2)
151 
152 struct ieee80211_tx_data {
153 	struct sk_buff *skb;
154 	struct sk_buff_head skbs;
155 	struct ieee80211_local *local;
156 	struct ieee80211_sub_if_data *sdata;
157 	struct sta_info *sta;
158 	struct ieee80211_key *key;
159 	struct ieee80211_tx_rate rate;
160 
161 	unsigned int flags;
162 };
163 
164 
165 typedef unsigned __bitwise ieee80211_rx_result;
166 #define RX_CONTINUE		((__force ieee80211_rx_result) 0u)
167 #define RX_DROP_UNUSABLE	((__force ieee80211_rx_result) 1u)
168 #define RX_DROP_MONITOR		((__force ieee80211_rx_result) 2u)
169 #define RX_QUEUED		((__force ieee80211_rx_result) 3u)
170 
171 /**
172  * enum ieee80211_packet_rx_flags - packet RX flags
173  * @IEEE80211_RX_AMSDU: a-MSDU packet
174  * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
175  * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
176  *
177  * These are per-frame flags that are attached to a frame in the
178  * @rx_flags field of &struct ieee80211_rx_status.
179  */
180 enum ieee80211_packet_rx_flags {
181 	IEEE80211_RX_AMSDU			= BIT(3),
182 	IEEE80211_RX_MALFORMED_ACTION_FRM	= BIT(4),
183 	IEEE80211_RX_DEFERRED_RELEASE		= BIT(5),
184 };
185 
186 /**
187  * enum ieee80211_rx_flags - RX data flags
188  *
189  * @IEEE80211_RX_CMNTR: received on cooked monitor already
190  * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
191  *	to cfg80211_report_obss_beacon().
192  *
193  * These flags are used across handling multiple interfaces
194  * for a single frame.
195  */
196 enum ieee80211_rx_flags {
197 	IEEE80211_RX_CMNTR		= BIT(0),
198 	IEEE80211_RX_BEACON_REPORTED	= BIT(1),
199 };
200 
201 struct ieee80211_rx_data {
202 	struct list_head *list;
203 	struct sk_buff *skb;
204 	struct ieee80211_local *local;
205 	struct ieee80211_sub_if_data *sdata;
206 	struct sta_info *sta;
207 	struct ieee80211_key *key;
208 
209 	unsigned int flags;
210 
211 	/*
212 	 * Index into sequence numbers array, 0..16
213 	 * since the last (16) is used for non-QoS,
214 	 * will be 16 on non-QoS frames.
215 	 */
216 	int seqno_idx;
217 
218 	/*
219 	 * Index into the security IV/PN arrays, 0..16
220 	 * since the last (16) is used for CCMP-encrypted
221 	 * management frames, will be set to 16 on mgmt
222 	 * frames and 0 on non-QoS frames.
223 	 */
224 	int security_idx;
225 
226 	union {
227 		struct {
228 			u32 iv32;
229 			u16 iv16;
230 		} tkip;
231 		struct {
232 			u8 pn[IEEE80211_CCMP_PN_LEN];
233 		} ccm_gcm;
234 	};
235 };
236 
237 struct ieee80211_csa_settings {
238 	const u16 *counter_offsets_beacon;
239 	const u16 *counter_offsets_presp;
240 
241 	int n_counter_offsets_beacon;
242 	int n_counter_offsets_presp;
243 
244 	u8 count;
245 };
246 
247 struct beacon_data {
248 	u8 *head, *tail;
249 	int head_len, tail_len;
250 	struct ieee80211_meshconf_ie *meshconf;
251 	u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
252 	u8 cntdwn_current_counter;
253 	struct rcu_head rcu_head;
254 };
255 
256 struct probe_resp {
257 	struct rcu_head rcu_head;
258 	int len;
259 	u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
260 	u8 data[];
261 };
262 
263 struct fils_discovery_data {
264 	struct rcu_head rcu_head;
265 	int len;
266 	u8 data[];
267 };
268 
269 struct unsol_bcast_probe_resp_data {
270 	struct rcu_head rcu_head;
271 	int len;
272 	u8 data[];
273 };
274 
275 struct ps_data {
276 	/* yes, this looks ugly, but guarantees that we can later use
277 	 * bitmap_empty :)
278 	 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
279 	u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
280 			__aligned(__alignof__(unsigned long));
281 	struct sk_buff_head bc_buf;
282 	atomic_t num_sta_ps; /* number of stations in PS mode */
283 	int dtim_count;
284 	bool dtim_bc_mc;
285 };
286 
287 struct ieee80211_if_ap {
288 	struct beacon_data __rcu *beacon;
289 	struct probe_resp __rcu *probe_resp;
290 	struct fils_discovery_data __rcu *fils_discovery;
291 	struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp;
292 
293 	/* to be used after channel switch. */
294 	struct cfg80211_beacon_data *next_beacon;
295 	struct list_head vlans; /* write-protected with RTNL and local->mtx */
296 
297 	struct ps_data ps;
298 	atomic_t num_mcast_sta; /* number of stations receiving multicast */
299 
300 	bool multicast_to_unicast;
301 };
302 
303 struct ieee80211_if_vlan {
304 	struct list_head list; /* write-protected with RTNL and local->mtx */
305 
306 	/* used for all tx if the VLAN is configured to 4-addr mode */
307 	struct sta_info __rcu *sta;
308 	atomic_t num_mcast_sta; /* number of stations receiving multicast */
309 };
310 
311 struct mesh_stats {
312 	__u32 fwded_mcast;		/* Mesh forwarded multicast frames */
313 	__u32 fwded_unicast;		/* Mesh forwarded unicast frames */
314 	__u32 fwded_frames;		/* Mesh total forwarded frames */
315 	__u32 dropped_frames_ttl;	/* Not transmitted since mesh_ttl == 0*/
316 	__u32 dropped_frames_no_route;	/* Not transmitted, no route found */
317 	__u32 dropped_frames_congestion;/* Not forwarded due to congestion */
318 };
319 
320 #define PREQ_Q_F_START		0x1
321 #define PREQ_Q_F_REFRESH	0x2
322 struct mesh_preq_queue {
323 	struct list_head list;
324 	u8 dst[ETH_ALEN];
325 	u8 flags;
326 };
327 
328 struct ieee80211_roc_work {
329 	struct list_head list;
330 
331 	struct ieee80211_sub_if_data *sdata;
332 
333 	struct ieee80211_channel *chan;
334 
335 	bool started, abort, hw_begun, notified;
336 	bool on_channel;
337 
338 	unsigned long start_time;
339 
340 	u32 duration, req_duration;
341 	struct sk_buff *frame;
342 	u64 cookie, mgmt_tx_cookie;
343 	enum ieee80211_roc_type type;
344 };
345 
346 /* flags used in struct ieee80211_if_managed.flags */
347 enum ieee80211_sta_flags {
348 	IEEE80211_STA_CONNECTION_POLL	= BIT(1),
349 	IEEE80211_STA_CONTROL_PORT	= BIT(2),
350 	IEEE80211_STA_DISABLE_HT	= BIT(4),
351 	IEEE80211_STA_MFP_ENABLED	= BIT(6),
352 	IEEE80211_STA_UAPSD_ENABLED	= BIT(7),
353 	IEEE80211_STA_NULLFUNC_ACKED	= BIT(8),
354 	IEEE80211_STA_RESET_SIGNAL_AVE	= BIT(9),
355 	IEEE80211_STA_DISABLE_40MHZ	= BIT(10),
356 	IEEE80211_STA_DISABLE_VHT	= BIT(11),
357 	IEEE80211_STA_DISABLE_80P80MHZ	= BIT(12),
358 	IEEE80211_STA_DISABLE_160MHZ	= BIT(13),
359 	IEEE80211_STA_DISABLE_WMM	= BIT(14),
360 	IEEE80211_STA_ENABLE_RRM	= BIT(15),
361 	IEEE80211_STA_DISABLE_HE	= BIT(16),
362 };
363 
364 struct ieee80211_mgd_auth_data {
365 	struct cfg80211_bss *bss;
366 	unsigned long timeout;
367 	int tries;
368 	u16 algorithm, expected_transaction;
369 
370 	u8 key[WLAN_KEY_LEN_WEP104];
371 	u8 key_len, key_idx;
372 	bool done;
373 	bool peer_confirmed;
374 	bool timeout_started;
375 
376 	u16 sae_trans, sae_status;
377 	size_t data_len;
378 	u8 data[];
379 };
380 
381 struct ieee80211_mgd_assoc_data {
382 	struct cfg80211_bss *bss;
383 	const u8 *supp_rates;
384 
385 	unsigned long timeout;
386 	int tries;
387 
388 	u16 capability;
389 	u8 prev_bssid[ETH_ALEN];
390 	u8 ssid[IEEE80211_MAX_SSID_LEN];
391 	u8 ssid_len;
392 	u8 supp_rates_len;
393 	bool wmm, uapsd;
394 	bool need_beacon;
395 	bool synced;
396 	bool timeout_started;
397 
398 	u8 ap_ht_param;
399 
400 	struct ieee80211_vht_cap ap_vht_cap;
401 
402 	u8 fils_nonces[2 * FILS_NONCE_LEN];
403 	u8 fils_kek[FILS_MAX_KEK_LEN];
404 	size_t fils_kek_len;
405 
406 	size_t ie_len;
407 	u8 ie[];
408 };
409 
410 struct ieee80211_sta_tx_tspec {
411 	/* timestamp of the first packet in the time slice */
412 	unsigned long time_slice_start;
413 
414 	u32 admitted_time; /* in usecs, unlike over the air */
415 	u8 tsid;
416 	s8 up; /* signed to be able to invalidate with -1 during teardown */
417 
418 	/* consumed TX time in microseconds in the time slice */
419 	u32 consumed_tx_time;
420 	enum {
421 		TX_TSPEC_ACTION_NONE = 0,
422 		TX_TSPEC_ACTION_DOWNGRADE,
423 		TX_TSPEC_ACTION_STOP_DOWNGRADE,
424 	} action;
425 	bool downgraded;
426 };
427 
428 DECLARE_EWMA(beacon_signal, 4, 4)
429 
430 struct ieee80211_if_managed {
431 	struct timer_list timer;
432 	struct timer_list conn_mon_timer;
433 	struct timer_list bcn_mon_timer;
434 	struct timer_list chswitch_timer;
435 	struct work_struct monitor_work;
436 	struct work_struct chswitch_work;
437 	struct work_struct beacon_connection_loss_work;
438 	struct work_struct csa_connection_drop_work;
439 
440 	unsigned long beacon_timeout;
441 	unsigned long probe_timeout;
442 	int probe_send_count;
443 	bool nullfunc_failed;
444 	u8 connection_loss:1,
445 	   driver_disconnect:1,
446 	   reconnect:1;
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 	struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */
534 	struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */
535 
536 	/* TDLS support */
537 	u8 tdls_peer[ETH_ALEN] __aligned(2);
538 	struct delayed_work tdls_peer_del_work;
539 	struct sk_buff *orig_teardown_skb; /* The original teardown skb */
540 	struct sk_buff *teardown_skb; /* A copy to send through the AP */
541 	spinlock_t teardown_lock; /* To lock changing teardown_skb */
542 	bool tdls_chan_switch_prohibited;
543 	bool tdls_wider_bw_prohibited;
544 
545 	/* WMM-AC TSPEC support */
546 	struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
547 	/* Use a separate work struct so that we can do something here
548 	 * while the sdata->work is flushing the queues, for example.
549 	 * otherwise, in scenarios where we hardly get any traffic out
550 	 * on the BE queue, but there's a lot of VO traffic, we might
551 	 * get stuck in a downgraded situation and flush takes forever.
552 	 */
553 	struct delayed_work tx_tspec_wk;
554 
555 	/* Information elements from the last transmitted (Re)Association
556 	 * Request frame.
557 	 */
558 	u8 *assoc_req_ies;
559 	size_t assoc_req_ies_len;
560 };
561 
562 struct ieee80211_if_ibss {
563 	struct timer_list timer;
564 	struct work_struct csa_connection_drop_work;
565 
566 	unsigned long last_scan_completed;
567 
568 	u32 basic_rates;
569 
570 	bool fixed_bssid;
571 	bool fixed_channel;
572 	bool privacy;
573 
574 	bool control_port;
575 	bool userspace_handles_dfs;
576 
577 	u8 bssid[ETH_ALEN] __aligned(2);
578 	u8 ssid[IEEE80211_MAX_SSID_LEN];
579 	u8 ssid_len, ie_len;
580 	u8 *ie;
581 	struct cfg80211_chan_def chandef;
582 
583 	unsigned long ibss_join_req;
584 	/* probe response/beacon for IBSS */
585 	struct beacon_data __rcu *presp;
586 
587 	struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
588 	struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
589 
590 	spinlock_t incomplete_lock;
591 	struct list_head incomplete_stations;
592 
593 	enum {
594 		IEEE80211_IBSS_MLME_SEARCH,
595 		IEEE80211_IBSS_MLME_JOINED,
596 	} state;
597 };
598 
599 /**
600  * struct ieee80211_if_ocb - OCB mode state
601  *
602  * @housekeeping_timer: timer for periodic invocation of a housekeeping task
603  * @wrkq_flags: OCB deferred task action
604  * @incomplete_lock: delayed STA insertion lock
605  * @incomplete_stations: list of STAs waiting for delayed insertion
606  * @joined: indication if the interface is connected to an OCB network
607  */
608 struct ieee80211_if_ocb {
609 	struct timer_list housekeeping_timer;
610 	unsigned long wrkq_flags;
611 
612 	spinlock_t incomplete_lock;
613 	struct list_head incomplete_stations;
614 
615 	bool joined;
616 };
617 
618 /**
619  * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
620  *
621  * these declarations define the interface, which enables
622  * vendor-specific mesh synchronization
623  *
624  */
625 struct ieee802_11_elems;
626 struct ieee80211_mesh_sync_ops {
627 	void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
628 			     u16 stype,
629 			     struct ieee80211_mgmt *mgmt,
630 			     struct ieee802_11_elems *elems,
631 			     struct ieee80211_rx_status *rx_status);
632 
633 	/* should be called with beacon_data under RCU read lock */
634 	void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
635 			   struct beacon_data *beacon);
636 	/* add other framework functions here */
637 };
638 
639 struct mesh_csa_settings {
640 	struct rcu_head rcu_head;
641 	struct cfg80211_csa_settings settings;
642 };
643 
644 struct ieee80211_if_mesh {
645 	struct timer_list housekeeping_timer;
646 	struct timer_list mesh_path_timer;
647 	struct timer_list mesh_path_root_timer;
648 
649 	unsigned long wrkq_flags;
650 	unsigned long mbss_changed;
651 
652 	bool userspace_handles_dfs;
653 
654 	u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
655 	size_t mesh_id_len;
656 	/* Active Path Selection Protocol Identifier */
657 	u8 mesh_pp_id;
658 	/* Active Path Selection Metric Identifier */
659 	u8 mesh_pm_id;
660 	/* Congestion Control Mode Identifier */
661 	u8 mesh_cc_id;
662 	/* Synchronization Protocol Identifier */
663 	u8 mesh_sp_id;
664 	/* Authentication Protocol Identifier */
665 	u8 mesh_auth_id;
666 	/* Local mesh Sequence Number */
667 	u32 sn;
668 	/* Last used PREQ ID */
669 	u32 preq_id;
670 	atomic_t mpaths;
671 	/* Timestamp of last SN update */
672 	unsigned long last_sn_update;
673 	/* Time when it's ok to send next PERR */
674 	unsigned long next_perr;
675 	/* Timestamp of last PREQ sent */
676 	unsigned long last_preq;
677 	struct mesh_rmc *rmc;
678 	spinlock_t mesh_preq_queue_lock;
679 	struct mesh_preq_queue preq_queue;
680 	int preq_queue_len;
681 	struct mesh_stats mshstats;
682 	struct mesh_config mshcfg;
683 	atomic_t estab_plinks;
684 	u32 mesh_seqnum;
685 	bool accepting_plinks;
686 	int num_gates;
687 	struct beacon_data __rcu *beacon;
688 	const u8 *ie;
689 	u8 ie_len;
690 	enum {
691 		IEEE80211_MESH_SEC_NONE = 0x0,
692 		IEEE80211_MESH_SEC_AUTHED = 0x1,
693 		IEEE80211_MESH_SEC_SECURED = 0x2,
694 	} security;
695 	bool user_mpm;
696 	/* Extensible Synchronization Framework */
697 	const struct ieee80211_mesh_sync_ops *sync_ops;
698 	s64 sync_offset_clockdrift_max;
699 	spinlock_t sync_offset_lock;
700 	/* mesh power save */
701 	enum nl80211_mesh_power_mode nonpeer_pm;
702 	int ps_peers_light_sleep;
703 	int ps_peers_deep_sleep;
704 	struct ps_data ps;
705 	/* Channel Switching Support */
706 	struct mesh_csa_settings __rcu *csa;
707 	enum {
708 		IEEE80211_MESH_CSA_ROLE_NONE,
709 		IEEE80211_MESH_CSA_ROLE_INIT,
710 		IEEE80211_MESH_CSA_ROLE_REPEATER,
711 	} csa_role;
712 	u8 chsw_ttl;
713 	u16 pre_value;
714 
715 	/* offset from skb->data while building IE */
716 	int meshconf_offset;
717 
718 	struct mesh_table *mesh_paths;
719 	struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */
720 	int mesh_paths_generation;
721 	int mpp_paths_generation;
722 };
723 
724 #ifdef CONFIG_MAC80211_MESH
725 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name)	\
726 	do { (msh)->mshstats.name++; } while (0)
727 #else
728 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
729 	do { } while (0)
730 #endif
731 
732 /**
733  * enum ieee80211_sub_if_data_flags - virtual interface flags
734  *
735  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
736  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
737  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
738  *	associated stations and deliver multicast frames both
739  *	back to wireless media and to the local net stack.
740  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
741  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
742  */
743 enum ieee80211_sub_if_data_flags {
744 	IEEE80211_SDATA_ALLMULTI		= BIT(0),
745 	IEEE80211_SDATA_OPERATING_GMODE		= BIT(2),
746 	IEEE80211_SDATA_DONT_BRIDGE_PACKETS	= BIT(3),
747 	IEEE80211_SDATA_DISCONNECT_RESUME	= BIT(4),
748 	IEEE80211_SDATA_IN_DRIVER		= BIT(5),
749 };
750 
751 /**
752  * enum ieee80211_sdata_state_bits - virtual interface state bits
753  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
754  *	mirrors netif_running() but is separate for interface type
755  *	change handling while the interface is up
756  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
757  *	mode, so queues are stopped
758  * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
759  *	to offchannel, reset when offchannel returns
760  */
761 enum ieee80211_sdata_state_bits {
762 	SDATA_STATE_RUNNING,
763 	SDATA_STATE_OFFCHANNEL,
764 	SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
765 };
766 
767 /**
768  * enum ieee80211_chanctx_mode - channel context configuration mode
769  *
770  * @IEEE80211_CHANCTX_SHARED: channel context may be used by
771  *	multiple interfaces
772  * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
773  *	only by a single interface. This can be used for example for
774  *	non-fixed channel IBSS.
775  */
776 enum ieee80211_chanctx_mode {
777 	IEEE80211_CHANCTX_SHARED,
778 	IEEE80211_CHANCTX_EXCLUSIVE
779 };
780 
781 /**
782  * enum ieee80211_chanctx_replace_state - channel context replacement state
783  *
784  * This is used for channel context in-place reservations that require channel
785  * context switch/swap.
786  *
787  * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
788  * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
789  *	by a (not yet registered) channel context pointed by %replace_ctx.
790  * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
791  *	replaces an existing channel context pointed to by %replace_ctx.
792  */
793 enum ieee80211_chanctx_replace_state {
794 	IEEE80211_CHANCTX_REPLACE_NONE,
795 	IEEE80211_CHANCTX_WILL_BE_REPLACED,
796 	IEEE80211_CHANCTX_REPLACES_OTHER,
797 };
798 
799 struct ieee80211_chanctx {
800 	struct list_head list;
801 	struct rcu_head rcu_head;
802 
803 	struct list_head assigned_vifs;
804 	struct list_head reserved_vifs;
805 
806 	enum ieee80211_chanctx_replace_state replace_state;
807 	struct ieee80211_chanctx *replace_ctx;
808 
809 	enum ieee80211_chanctx_mode mode;
810 	bool driver_present;
811 
812 	struct ieee80211_chanctx_conf conf;
813 };
814 
815 struct mac80211_qos_map {
816 	struct cfg80211_qos_map qos_map;
817 	struct rcu_head rcu_head;
818 };
819 
820 enum txq_info_flags {
821 	IEEE80211_TXQ_STOP,
822 	IEEE80211_TXQ_AMPDU,
823 	IEEE80211_TXQ_NO_AMSDU,
824 	IEEE80211_TXQ_STOP_NETIF_TX,
825 };
826 
827 /**
828  * struct txq_info - per tid queue
829  *
830  * @tin: contains packets split into multiple flows
831  * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
832  *	a fq_flow which is already owned by a different tin
833  * @def_cvars: codel vars for @def_flow
834  * @schedule_order: used with ieee80211_local->active_txqs
835  * @frags: used to keep fragments created after dequeue
836  */
837 struct txq_info {
838 	struct fq_tin tin;
839 	struct codel_vars def_cvars;
840 	struct codel_stats cstats;
841 	struct rb_node schedule_order;
842 
843 	struct sk_buff_head frags;
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 	struct ieee80211_fragment_cache frags;
894 
895 	/* TID bitmap for NoAck policy */
896 	u16 noack_map;
897 
898 	/* bit field of ACM bits (BIT(802.1D tag)) */
899 	u8 wmm_acm;
900 
901 	struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS +
902 					 NUM_DEFAULT_MGMT_KEYS +
903 					 NUM_DEFAULT_BEACON_KEYS];
904 	struct ieee80211_key __rcu *default_unicast_key;
905 	struct ieee80211_key __rcu *default_multicast_key;
906 	struct ieee80211_key __rcu *default_mgmt_key;
907 	struct ieee80211_key __rcu *default_beacon_key;
908 
909 	u16 sequence_number;
910 	__be16 control_port_protocol;
911 	bool control_port_no_encrypt;
912 	bool control_port_no_preauth;
913 	bool control_port_over_nl80211;
914 	int encrypt_headroom;
915 
916 	atomic_t num_tx_queued;
917 	struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
918 	struct mac80211_qos_map __rcu *qos_map;
919 
920 	struct airtime_info airtime[IEEE80211_NUM_ACS];
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_vlan vlan;
973 		struct ieee80211_if_managed mgd;
974 		struct ieee80211_if_ibss ibss;
975 		struct ieee80211_if_mesh mesh;
976 		struct ieee80211_if_ocb ocb;
977 		struct ieee80211_if_mntr mntr;
978 		struct ieee80211_if_nan nan;
979 	} u;
980 
981 #ifdef CONFIG_MAC80211_DEBUGFS
982 	struct {
983 		struct dentry *subdir_stations;
984 		struct dentry *default_unicast_key;
985 		struct dentry *default_multicast_key;
986 		struct dentry *default_mgmt_key;
987 		struct dentry *default_beacon_key;
988 	} debugfs;
989 #endif
990 
991 	/* must be last, dynamically sized area in this! */
992 	struct ieee80211_vif vif;
993 };
994 
995 static inline
996 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
997 {
998 	return container_of(p, struct ieee80211_sub_if_data, vif);
999 }
1000 
1001 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
1002 	__acquires(&sdata->wdev.mtx)
1003 {
1004 	mutex_lock(&sdata->wdev.mtx);
1005 	__acquire(&sdata->wdev.mtx);
1006 }
1007 
1008 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
1009 	__releases(&sdata->wdev.mtx)
1010 {
1011 	mutex_unlock(&sdata->wdev.mtx);
1012 	__release(&sdata->wdev.mtx);
1013 }
1014 
1015 #define sdata_dereference(p, sdata) \
1016 	rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
1017 
1018 static inline void
1019 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
1020 {
1021 	lockdep_assert_held(&sdata->wdev.mtx);
1022 }
1023 
1024 static inline int
1025 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1026 {
1027 	switch (chandef->width) {
1028 	case NL80211_CHAN_WIDTH_5:
1029 		return 2;
1030 	case NL80211_CHAN_WIDTH_10:
1031 		return 1;
1032 	default:
1033 		return 0;
1034 	}
1035 }
1036 
1037 static inline int
1038 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1039 {
1040 	struct ieee80211_chanctx_conf *chanctx_conf;
1041 	int shift = 0;
1042 
1043 	rcu_read_lock();
1044 	chanctx_conf = rcu_dereference(vif->chanctx_conf);
1045 	if (chanctx_conf)
1046 		shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1047 	rcu_read_unlock();
1048 
1049 	return shift;
1050 }
1051 
1052 enum {
1053 	IEEE80211_RX_MSG	= 1,
1054 	IEEE80211_TX_STATUS_MSG	= 2,
1055 };
1056 
1057 enum queue_stop_reason {
1058 	IEEE80211_QUEUE_STOP_REASON_DRIVER,
1059 	IEEE80211_QUEUE_STOP_REASON_PS,
1060 	IEEE80211_QUEUE_STOP_REASON_CSA,
1061 	IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1062 	IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1063 	IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1064 	IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1065 	IEEE80211_QUEUE_STOP_REASON_FLUSH,
1066 	IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1067 	IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1068 	IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE,
1069 
1070 	IEEE80211_QUEUE_STOP_REASONS,
1071 };
1072 
1073 #ifdef CONFIG_MAC80211_LEDS
1074 struct tpt_led_trigger {
1075 	char name[32];
1076 	const struct ieee80211_tpt_blink *blink_table;
1077 	unsigned int blink_table_len;
1078 	struct timer_list timer;
1079 	struct ieee80211_local *local;
1080 	unsigned long prev_traffic;
1081 	unsigned long tx_bytes, rx_bytes;
1082 	unsigned int active, want;
1083 	bool running;
1084 };
1085 #endif
1086 
1087 /**
1088  * mac80211 scan flags - currently active scan mode
1089  *
1090  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1091  *	well be on the operating channel
1092  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1093  *	determine if we are on the operating channel or not
1094  * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
1095  *	channel. This should not interrupt normal traffic.
1096  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1097  *	that the scan completed.
1098  * @SCAN_ABORTED: Set for our scan work function when the driver reported
1099  *	a scan complete for an aborted scan.
1100  * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1101  *	cancelled.
1102  */
1103 enum {
1104 	SCAN_SW_SCANNING,
1105 	SCAN_HW_SCANNING,
1106 	SCAN_ONCHANNEL_SCANNING,
1107 	SCAN_COMPLETED,
1108 	SCAN_ABORTED,
1109 	SCAN_HW_CANCELLED,
1110 };
1111 
1112 /**
1113  * enum mac80211_scan_state - scan state machine states
1114  *
1115  * @SCAN_DECISION: Main entry point to the scan state machine, this state
1116  *	determines if we should keep on scanning or switch back to the
1117  *	operating channel
1118  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1119  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1120  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1121  *	send out data
1122  * @SCAN_RESUME: Resume the scan and scan the next channel
1123  * @SCAN_ABORT: Abort the scan and go back to operating channel
1124  */
1125 enum mac80211_scan_state {
1126 	SCAN_DECISION,
1127 	SCAN_SET_CHANNEL,
1128 	SCAN_SEND_PROBE,
1129 	SCAN_SUSPEND,
1130 	SCAN_RESUME,
1131 	SCAN_ABORT,
1132 };
1133 
1134 /**
1135  * struct airtime_sched_info - state used for airtime scheduling and AQL
1136  *
1137  * @lock: spinlock that protects all the fields in this struct
1138  * @active_txqs: rbtree of currently backlogged queues, sorted by virtual time
1139  * @schedule_pos: the current position maintained while a driver walks the tree
1140  *                with ieee80211_next_txq()
1141  * @active_list: list of struct airtime_info structs that were active within
1142  *               the last AIRTIME_ACTIVE_DURATION (100 ms), used to compute
1143  *               weight_sum
1144  * @last_weight_update: used for rate limiting walking active_list
1145  * @last_schedule_time: tracks the last time a transmission was scheduled; used
1146  *                      for catching up v_t if no stations are eligible for
1147  *                      transmission.
1148  * @v_t: global virtual time; queues with v_t < this are eligible for
1149  *       transmission
1150  * @weight_sum: total sum of all active stations used for dividing airtime
1151  * @weight_sum_reciprocal: reciprocal of weight_sum (to avoid divisions in fast
1152  *                         path - see comment above
1153  *                         IEEE80211_RECIPROCAL_DIVISOR_64)
1154  * @aql_txq_limit_low: AQL limit when total outstanding airtime
1155  *                     is < IEEE80211_AQL_THRESHOLD
1156  * @aql_txq_limit_high: AQL limit when total outstanding airtime
1157  *                      is > IEEE80211_AQL_THRESHOLD
1158  */
1159 struct airtime_sched_info {
1160 	spinlock_t lock;
1161 	struct rb_root_cached active_txqs;
1162 	struct rb_node *schedule_pos;
1163 	struct list_head active_list;
1164 	u64 last_weight_update;
1165 	u64 last_schedule_activity;
1166 	u64 v_t;
1167 	u64 weight_sum;
1168 	u64 weight_sum_reciprocal;
1169 	u32 aql_txq_limit_low;
1170 	u32 aql_txq_limit_high;
1171 };
1172 DECLARE_STATIC_KEY_FALSE(aql_disable);
1173 
1174 struct ieee80211_local {
1175 	/* embed the driver visible part.
1176 	 * don't cast (use the static inlines below), but we keep
1177 	 * it first anyway so they become a no-op */
1178 	struct ieee80211_hw hw;
1179 
1180 	struct fq fq;
1181 	struct codel_vars *cvars;
1182 	struct codel_params cparams;
1183 
1184 	/* protects active_txqs and txqi->schedule_order */
1185 	struct airtime_sched_info airtime[IEEE80211_NUM_ACS];
1186 	u16 airtime_flags;
1187 	u32 aql_threshold;
1188 	atomic_t aql_total_pending_airtime;
1189 
1190 	const struct ieee80211_ops *ops;
1191 
1192 	/*
1193 	 * private workqueue to mac80211. mac80211 makes this accessible
1194 	 * via ieee80211_queue_work()
1195 	 */
1196 	struct workqueue_struct *workqueue;
1197 
1198 	unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1199 	int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1200 	/* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1201 	spinlock_t queue_stop_reason_lock;
1202 
1203 	int open_count;
1204 	int monitors, cooked_mntrs;
1205 	/* number of interfaces with corresponding FIF_ flags */
1206 	int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1207 	    fif_probe_req;
1208 	bool probe_req_reg;
1209 	bool rx_mcast_action_reg;
1210 	unsigned int filter_flags; /* FIF_* */
1211 
1212 	bool wiphy_ciphers_allocated;
1213 
1214 	bool use_chanctx;
1215 
1216 	/* protects the aggregated multicast list and filter calls */
1217 	spinlock_t filter_lock;
1218 
1219 	/* used for uploading changed mc list */
1220 	struct work_struct reconfig_filter;
1221 
1222 	/* aggregated multicast list */
1223 	struct netdev_hw_addr_list mc_list;
1224 
1225 	bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1226 
1227 	/*
1228 	 * suspended is true if we finished all the suspend _and_ we have
1229 	 * not yet come up from resume. This is to be used by mac80211
1230 	 * to ensure driver sanity during suspend and mac80211's own
1231 	 * sanity. It can eventually be used for WoW as well.
1232 	 */
1233 	bool suspended;
1234 
1235 	/*
1236 	 * Resuming is true while suspended, but when we're reprogramming the
1237 	 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1238 	 * again even though some other parts of the stack are still suspended
1239 	 * and we still drop received frames to avoid waking the stack.
1240 	 */
1241 	bool resuming;
1242 
1243 	/*
1244 	 * quiescing is true during the suspend process _only_ to
1245 	 * ease timer cancelling etc.
1246 	 */
1247 	bool quiescing;
1248 
1249 	/* device is started */
1250 	bool started;
1251 
1252 	/* device is during a HW reconfig */
1253 	bool in_reconfig;
1254 
1255 	/* wowlan is enabled -- don't reconfig on resume */
1256 	bool wowlan;
1257 
1258 	struct work_struct radar_detected_work;
1259 
1260 	/* number of RX chains the hardware has */
1261 	u8 rx_chains;
1262 
1263 	/* bitmap of which sbands were copied */
1264 	u8 sband_allocated;
1265 
1266 	int tx_headroom; /* required headroom for hardware/radiotap */
1267 
1268 	/* Tasklet and skb queue to process calls from IRQ mode. All frames
1269 	 * added to skb_queue will be processed, but frames in
1270 	 * skb_queue_unreliable may be dropped if the total length of these
1271 	 * queues increases over the limit. */
1272 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1273 	struct tasklet_struct tasklet;
1274 	struct sk_buff_head skb_queue;
1275 	struct sk_buff_head skb_queue_unreliable;
1276 
1277 	spinlock_t rx_path_lock;
1278 
1279 	/* Station data */
1280 	/*
1281 	 * The mutex only protects the list, hash table and
1282 	 * counter, reads are done with RCU.
1283 	 */
1284 	struct mutex sta_mtx;
1285 	spinlock_t tim_lock;
1286 	unsigned long num_sta;
1287 	struct list_head sta_list;
1288 	struct rhltable sta_hash;
1289 	struct timer_list sta_cleanup;
1290 	int sta_generation;
1291 
1292 	struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1293 	struct tasklet_struct tx_pending_tasklet;
1294 	struct tasklet_struct wake_txqs_tasklet;
1295 
1296 	atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1297 
1298 	/* number of interfaces with allmulti RX */
1299 	atomic_t iff_allmultis;
1300 
1301 	struct rate_control_ref *rate_ctrl;
1302 
1303 	struct arc4_ctx wep_tx_ctx;
1304 	struct arc4_ctx wep_rx_ctx;
1305 	u32 wep_iv;
1306 
1307 	/* see iface.c */
1308 	struct list_head interfaces;
1309 	struct list_head mon_list; /* only that are IFF_UP && !cooked */
1310 	struct mutex iflist_mtx;
1311 
1312 	/*
1313 	 * Key mutex, protects sdata's key_list and sta_info's
1314 	 * key pointers and ptk_idx (write access, they're RCU.)
1315 	 */
1316 	struct mutex key_mtx;
1317 
1318 	/* mutex for scan and work locking */
1319 	struct mutex mtx;
1320 
1321 	/* Scanning and BSS list */
1322 	unsigned long scanning;
1323 	struct cfg80211_ssid scan_ssid;
1324 	struct cfg80211_scan_request *int_scan_req;
1325 	struct cfg80211_scan_request __rcu *scan_req;
1326 	struct ieee80211_scan_request *hw_scan_req;
1327 	struct cfg80211_chan_def scan_chandef;
1328 	enum nl80211_band hw_scan_band;
1329 	int scan_channel_idx;
1330 	int scan_ies_len;
1331 	int hw_scan_ies_bufsize;
1332 	struct cfg80211_scan_info scan_info;
1333 
1334 	struct work_struct sched_scan_stopped_work;
1335 	struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1336 	struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1337 	u8 scan_addr[ETH_ALEN];
1338 
1339 	unsigned long leave_oper_channel_time;
1340 	enum mac80211_scan_state next_scan_state;
1341 	struct delayed_work scan_work;
1342 	struct ieee80211_sub_if_data __rcu *scan_sdata;
1343 	/* For backward compatibility only -- do not use */
1344 	struct cfg80211_chan_def _oper_chandef;
1345 
1346 	/* Temporary remain-on-channel for off-channel operations */
1347 	struct ieee80211_channel *tmp_channel;
1348 
1349 	/* channel contexts */
1350 	struct list_head chanctx_list;
1351 	struct mutex chanctx_mtx;
1352 
1353 #ifdef CONFIG_MAC80211_LEDS
1354 	struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1355 	struct led_trigger tpt_led;
1356 	atomic_t tx_led_active, rx_led_active, assoc_led_active;
1357 	atomic_t radio_led_active, tpt_led_active;
1358 	struct tpt_led_trigger *tpt_led_trigger;
1359 #endif
1360 
1361 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1362 	/* SNMP counters */
1363 	/* dot11CountersTable */
1364 	u32 dot11TransmittedFragmentCount;
1365 	u32 dot11MulticastTransmittedFrameCount;
1366 	u32 dot11FailedCount;
1367 	u32 dot11RetryCount;
1368 	u32 dot11MultipleRetryCount;
1369 	u32 dot11FrameDuplicateCount;
1370 	u32 dot11ReceivedFragmentCount;
1371 	u32 dot11MulticastReceivedFrameCount;
1372 	u32 dot11TransmittedFrameCount;
1373 
1374 	/* TX/RX handler statistics */
1375 	unsigned int tx_handlers_drop;
1376 	unsigned int tx_handlers_queued;
1377 	unsigned int tx_handlers_drop_wep;
1378 	unsigned int tx_handlers_drop_not_assoc;
1379 	unsigned int tx_handlers_drop_unauth_port;
1380 	unsigned int rx_handlers_drop;
1381 	unsigned int rx_handlers_queued;
1382 	unsigned int rx_handlers_drop_nullfunc;
1383 	unsigned int rx_handlers_drop_defrag;
1384 	unsigned int tx_expand_skb_head;
1385 	unsigned int tx_expand_skb_head_cloned;
1386 	unsigned int rx_expand_skb_head_defrag;
1387 	unsigned int rx_handlers_fragments;
1388 	unsigned int tx_status_drop;
1389 #define I802_DEBUG_INC(c) (c)++
1390 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1391 #define I802_DEBUG_INC(c) do { } while (0)
1392 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1393 
1394 
1395 	int total_ps_buffered; /* total number of all buffered unicast and
1396 				* multicast packets for power saving stations
1397 				*/
1398 
1399 	bool pspolling;
1400 	/*
1401 	 * PS can only be enabled when we have exactly one managed
1402 	 * interface (and monitors) in PS, this then points there.
1403 	 */
1404 	struct ieee80211_sub_if_data *ps_sdata;
1405 	struct work_struct dynamic_ps_enable_work;
1406 	struct work_struct dynamic_ps_disable_work;
1407 	struct timer_list dynamic_ps_timer;
1408 	struct notifier_block ifa_notifier;
1409 	struct notifier_block ifa6_notifier;
1410 
1411 	/*
1412 	 * The dynamic ps timeout configured from user space via WEXT -
1413 	 * this will override whatever chosen by mac80211 internally.
1414 	 */
1415 	int dynamic_ps_forced_timeout;
1416 
1417 	int user_power_level; /* in dBm, for all interfaces */
1418 
1419 	enum ieee80211_smps_mode smps_mode;
1420 
1421 	struct work_struct restart_work;
1422 
1423 #ifdef CONFIG_MAC80211_DEBUGFS
1424 	struct local_debugfsdentries {
1425 		struct dentry *rcdir;
1426 		struct dentry *keys;
1427 	} debugfs;
1428 	bool force_tx_status;
1429 #endif
1430 
1431 	/*
1432 	 * Remain-on-channel support
1433 	 */
1434 	struct delayed_work roc_work;
1435 	struct list_head roc_list;
1436 	struct work_struct hw_roc_start, hw_roc_done;
1437 	unsigned long hw_roc_start_time;
1438 	u64 roc_cookie_counter;
1439 
1440 	struct idr ack_status_frames;
1441 	spinlock_t ack_status_lock;
1442 
1443 	struct ieee80211_sub_if_data __rcu *p2p_sdata;
1444 
1445 	/* virtual monitor interface */
1446 	struct ieee80211_sub_if_data __rcu *monitor_sdata;
1447 	struct cfg80211_chan_def monitor_chandef;
1448 
1449 	/* extended capabilities provided by mac80211 */
1450 	u8 ext_capa[8];
1451 };
1452 
1453 static inline struct ieee80211_sub_if_data *
1454 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1455 {
1456 	return netdev_priv(dev);
1457 }
1458 
1459 static inline struct ieee80211_sub_if_data *
1460 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1461 {
1462 	return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1463 }
1464 
1465 static inline struct ieee80211_supported_band *
1466 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1467 {
1468 	struct ieee80211_local *local = sdata->local;
1469 	struct ieee80211_chanctx_conf *chanctx_conf;
1470 	enum nl80211_band band;
1471 
1472 	rcu_read_lock();
1473 	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1474 
1475 	if (!chanctx_conf) {
1476 		rcu_read_unlock();
1477 		return NULL;
1478 	}
1479 
1480 	band = chanctx_conf->def.chan->band;
1481 	rcu_read_unlock();
1482 
1483 	return local->hw.wiphy->bands[band];
1484 }
1485 
1486 /* this struct holds the value parsing from channel switch IE  */
1487 struct ieee80211_csa_ie {
1488 	struct cfg80211_chan_def chandef;
1489 	u8 mode;
1490 	u8 count;
1491 	u8 ttl;
1492 	u16 pre_value;
1493 	u16 reason_code;
1494 	u32 max_switch_time;
1495 };
1496 
1497 /* Parsed Information Elements */
1498 struct ieee802_11_elems {
1499 	const u8 *ie_start;
1500 	size_t total_len;
1501 
1502 	/* pointers to IEs */
1503 	const struct ieee80211_tdls_lnkie *lnk_id;
1504 	const struct ieee80211_ch_switch_timing *ch_sw_timing;
1505 	const u8 *ext_capab;
1506 	const u8 *ssid;
1507 	const u8 *supp_rates;
1508 	const u8 *ds_params;
1509 	const struct ieee80211_tim_ie *tim;
1510 	const u8 *challenge;
1511 	const u8 *rsn;
1512 	const u8 *rsnx;
1513 	const u8 *erp_info;
1514 	const u8 *ext_supp_rates;
1515 	const u8 *wmm_info;
1516 	const u8 *wmm_param;
1517 	const struct ieee80211_ht_cap *ht_cap_elem;
1518 	const struct ieee80211_ht_operation *ht_operation;
1519 	const struct ieee80211_vht_cap *vht_cap_elem;
1520 	const struct ieee80211_vht_operation *vht_operation;
1521 	const struct ieee80211_meshconf_ie *mesh_config;
1522 	const u8 *he_cap;
1523 	const struct ieee80211_he_operation *he_operation;
1524 	const struct ieee80211_he_spr *he_spr;
1525 	const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1526 	const struct ieee80211_he_6ghz_capa *he_6ghz_capa;
1527 	const u8 *uora_element;
1528 	const u8 *mesh_id;
1529 	const u8 *peering;
1530 	const __le16 *awake_window;
1531 	const u8 *preq;
1532 	const u8 *prep;
1533 	const u8 *perr;
1534 	const struct ieee80211_rann_ie *rann;
1535 	const struct ieee80211_channel_sw_ie *ch_switch_ie;
1536 	const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1537 	const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1538 	const u8 *max_channel_switch_time;
1539 	const u8 *country_elem;
1540 	const u8 *pwr_constr_elem;
1541 	const u8 *cisco_dtpc_elem;
1542 	const struct ieee80211_timeout_interval_ie *timeout_int;
1543 	const u8 *opmode_notif;
1544 	const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1545 	struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1546 	const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1547 	const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
1548 	const struct ieee80211_bssid_index *bssid_index;
1549 	u8 max_bssid_indicator;
1550 	u8 dtim_count;
1551 	u8 dtim_period;
1552 	const struct ieee80211_addba_ext_ie *addba_ext_ie;
1553 	const struct ieee80211_s1g_cap *s1g_capab;
1554 	const struct ieee80211_s1g_oper_ie *s1g_oper;
1555 	const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat;
1556 	const struct ieee80211_aid_response_ie *aid_resp;
1557 
1558 	/* length of them, respectively */
1559 	u8 ext_capab_len;
1560 	u8 ssid_len;
1561 	u8 supp_rates_len;
1562 	u8 tim_len;
1563 	u8 challenge_len;
1564 	u8 rsn_len;
1565 	u8 rsnx_len;
1566 	u8 ext_supp_rates_len;
1567 	u8 wmm_info_len;
1568 	u8 wmm_param_len;
1569 	u8 he_cap_len;
1570 	u8 mesh_id_len;
1571 	u8 peering_len;
1572 	u8 preq_len;
1573 	u8 prep_len;
1574 	u8 perr_len;
1575 	u8 country_elem_len;
1576 	u8 bssid_index_len;
1577 
1578 	/* whether a parse error occurred while retrieving these elements */
1579 	bool parse_error;
1580 };
1581 
1582 static inline struct ieee80211_local *hw_to_local(
1583 	struct ieee80211_hw *hw)
1584 {
1585 	return container_of(hw, struct ieee80211_local, hw);
1586 }
1587 
1588 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1589 {
1590 	return container_of(txq, struct txq_info, txq);
1591 }
1592 
1593 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1594 {
1595 	struct txq_info *txqi = to_txq_info(txq);
1596 
1597 	return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1598 }
1599 
1600 static inline struct airtime_info *to_airtime_info(struct ieee80211_txq *txq)
1601 {
1602 	struct ieee80211_sub_if_data *sdata;
1603 	struct sta_info *sta;
1604 
1605 	if (txq->sta) {
1606 		sta = container_of(txq->sta, struct sta_info, sta);
1607 		return &sta->airtime[txq->ac];
1608 	}
1609 
1610 	sdata = vif_to_sdata(txq->vif);
1611 	return &sdata->airtime[txq->ac];
1612 }
1613 
1614 /* To avoid divisions in the fast path, we keep pre-computed reciprocals for
1615  * airtime weight calculations. There are two different weights to keep track
1616  * of: The per-station weight and the sum of weights per phy.
1617  *
1618  * For the per-station weights (kept in airtime_info below), we use 32-bit
1619  * reciprocals with a devisor of 2^19. This lets us keep the multiplications and
1620  * divisions for the station weights as 32-bit operations at the cost of a bit
1621  * of rounding error for high weights; but the choice of divisor keeps rounding
1622  * errors <10% for weights <2^15, assuming no more than 8ms of airtime is
1623  * reported at a time.
1624  *
1625  * For the per-phy sum of weights the values can get higher, so we use 64-bit
1626  * operations for those with a 32-bit divisor, which should avoid any
1627  * significant rounding errors.
1628  */
1629 #define IEEE80211_RECIPROCAL_DIVISOR_64 0x100000000ULL
1630 #define IEEE80211_RECIPROCAL_SHIFT_64 32
1631 #define IEEE80211_RECIPROCAL_DIVISOR_32 0x80000U
1632 #define IEEE80211_RECIPROCAL_SHIFT_32 19
1633 
1634 static inline void airtime_weight_set(struct airtime_info *air_info, u16 weight)
1635 {
1636 	if (air_info->weight == weight)
1637 		return;
1638 
1639 	air_info->weight = weight;
1640 	if (weight) {
1641 		air_info->weight_reciprocal =
1642 			IEEE80211_RECIPROCAL_DIVISOR_32 / weight;
1643 	} else {
1644 		air_info->weight_reciprocal = 0;
1645 	}
1646 }
1647 
1648 static inline void airtime_weight_sum_set(struct airtime_sched_info *air_sched,
1649 					  int weight_sum)
1650 {
1651 	if (air_sched->weight_sum == weight_sum)
1652 		return;
1653 
1654 	air_sched->weight_sum = weight_sum;
1655 	if (air_sched->weight_sum) {
1656 		air_sched->weight_sum_reciprocal = IEEE80211_RECIPROCAL_DIVISOR_64;
1657 		do_div(air_sched->weight_sum_reciprocal, air_sched->weight_sum);
1658 	} else {
1659 		air_sched->weight_sum_reciprocal = 0;
1660 	}
1661 }
1662 
1663 /* A problem when trying to enforce airtime fairness is that we want to divide
1664  * the airtime between the currently *active* stations. However, basing this on
1665  * the instantaneous queue state of stations doesn't work, as queues tend to
1666  * oscillate very quickly between empty and occupied, leading to the scheduler
1667  * thinking only a single station is active when deciding whether to allow
1668  * transmission (and thus not throttling correctly).
1669  *
1670  * To fix this we use a timer-based notion of activity: a station is considered
1671  * active if it has been scheduled within the last 100 ms; we keep a separate
1672  * list of all the stations considered active in this manner, and lazily update
1673  * the total weight of active stations from this list (filtering the stations in
1674  * the list by their 'last active' time).
1675  *
1676  * We add one additional safeguard to guard against stations that manage to get
1677  * scheduled every 100 ms but don't transmit a lot of data, and thus don't use
1678  * up any airtime. Such stations would be able to get priority for an extended
1679  * period of time if they do start transmitting at full capacity again, and so
1680  * we add an explicit maximum for how far behind a station is allowed to fall in
1681  * the virtual airtime domain. This limit is set to a relatively high value of
1682  * 20 ms because the main mechanism for catching up idle stations is the active
1683  * state as described above; i.e., the hard limit should only be hit in
1684  * pathological cases.
1685  */
1686 #define AIRTIME_ACTIVE_DURATION (100 * NSEC_PER_MSEC)
1687 #define AIRTIME_MAX_BEHIND 20000 /* 20 ms */
1688 
1689 static inline bool airtime_is_active(struct airtime_info *air_info, u64 now)
1690 {
1691 	return air_info->last_scheduled >= now - AIRTIME_ACTIVE_DURATION;
1692 }
1693 
1694 static inline void airtime_set_active(struct airtime_sched_info *air_sched,
1695 				      struct airtime_info *air_info, u64 now)
1696 {
1697 	air_info->last_scheduled = now;
1698 	air_sched->last_schedule_activity = now;
1699 	list_move_tail(&air_info->list, &air_sched->active_list);
1700 }
1701 
1702 static inline bool airtime_catchup_v_t(struct airtime_sched_info *air_sched,
1703 				       u64 v_t, u64 now)
1704 {
1705 	air_sched->v_t = v_t;
1706 	return true;
1707 }
1708 
1709 static inline void init_airtime_info(struct airtime_info *air_info,
1710 				     struct airtime_sched_info *air_sched)
1711 {
1712 	atomic_set(&air_info->aql_tx_pending, 0);
1713 	air_info->aql_limit_low = air_sched->aql_txq_limit_low;
1714 	air_info->aql_limit_high = air_sched->aql_txq_limit_high;
1715 	airtime_weight_set(air_info, IEEE80211_DEFAULT_AIRTIME_WEIGHT);
1716 	INIT_LIST_HEAD(&air_info->list);
1717 }
1718 
1719 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1720 {
1721 	return ether_addr_equal(raddr, addr) ||
1722 	       is_broadcast_ether_addr(raddr);
1723 }
1724 
1725 static inline bool
1726 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1727 {
1728 	WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1729 		     status->flag & RX_FLAG_MACTIME_END);
1730 	return !!(status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END |
1731 				  RX_FLAG_MACTIME_PLCP_START));
1732 }
1733 
1734 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1735 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1736 
1737 /* This function returns the number of multicast stations connected to this
1738  * interface. It returns -1 if that number is not tracked, that is for netdevs
1739  * not in AP or AP_VLAN mode or when using 4addr.
1740  */
1741 static inline int
1742 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1743 {
1744 	if (sdata->vif.type == NL80211_IFTYPE_AP)
1745 		return atomic_read(&sdata->u.ap.num_mcast_sta);
1746 	if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1747 		return atomic_read(&sdata->u.vlan.num_mcast_sta);
1748 	return -1;
1749 }
1750 
1751 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1752 				     struct ieee80211_rx_status *status,
1753 				     unsigned int mpdu_len,
1754 				     unsigned int mpdu_offset);
1755 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1756 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1757 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1758 				      u32 changed);
1759 void ieee80211_configure_filter(struct ieee80211_local *local);
1760 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1761 
1762 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1763 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1764 			     u64 *cookie, gfp_t gfp);
1765 
1766 void ieee80211_check_fast_rx(struct sta_info *sta);
1767 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1768 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1769 void ieee80211_clear_fast_rx(struct sta_info *sta);
1770 
1771 /* STA code */
1772 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1773 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1774 		       struct cfg80211_auth_request *req);
1775 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1776 			struct cfg80211_assoc_request *req);
1777 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1778 			 struct cfg80211_deauth_request *req);
1779 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1780 			   struct cfg80211_disassoc_request *req);
1781 void ieee80211_send_pspoll(struct ieee80211_local *local,
1782 			   struct ieee80211_sub_if_data *sdata);
1783 void ieee80211_recalc_ps(struct ieee80211_local *local);
1784 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1785 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1786 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1787 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1788 				  struct sk_buff *skb);
1789 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
1790 				 struct sk_buff *skb);
1791 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1792 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1793 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1794 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1795 				  __le16 fc, bool acked);
1796 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1797 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1798 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1799 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
1800 				   u8 *bssid, u8 reason, bool tx);
1801 
1802 /* IBSS code */
1803 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1804 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1805 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1806 			      const u8 *bssid, const u8 *addr, u32 supp_rates);
1807 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1808 			struct cfg80211_ibss_params *params);
1809 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1810 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1811 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1812 				   struct sk_buff *skb);
1813 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1814 			      struct cfg80211_csa_settings *csa_settings);
1815 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1816 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1817 
1818 /* OCB code */
1819 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1820 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1821 			     const u8 *bssid, const u8 *addr, u32 supp_rates);
1822 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1823 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1824 		       struct ocb_setup *setup);
1825 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1826 
1827 /* mesh code */
1828 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1829 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1830 				   struct sk_buff *skb);
1831 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1832 			      struct cfg80211_csa_settings *csa_settings);
1833 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1834 
1835 /* scan/BSS handling */
1836 void ieee80211_scan_work(struct work_struct *work);
1837 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1838 				const u8 *ssid, u8 ssid_len,
1839 				struct ieee80211_channel **channels,
1840 				unsigned int n_channels,
1841 				enum nl80211_bss_scan_width scan_width);
1842 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1843 			   struct cfg80211_scan_request *req);
1844 void ieee80211_scan_cancel(struct ieee80211_local *local);
1845 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1846 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1847 
1848 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1849 struct ieee80211_bss *
1850 ieee80211_bss_info_update(struct ieee80211_local *local,
1851 			  struct ieee80211_rx_status *rx_status,
1852 			  struct ieee80211_mgmt *mgmt,
1853 			  size_t len,
1854 			  struct ieee80211_channel *channel);
1855 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1856 			  struct ieee80211_bss *bss);
1857 
1858 /* scheduled scan handling */
1859 int
1860 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1861 				     struct cfg80211_sched_scan_request *req);
1862 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1863 				       struct cfg80211_sched_scan_request *req);
1864 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1865 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1866 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1867 
1868 /* off-channel/mgmt-tx */
1869 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1870 void ieee80211_offchannel_return(struct ieee80211_local *local);
1871 void ieee80211_roc_setup(struct ieee80211_local *local);
1872 void ieee80211_start_next_roc(struct ieee80211_local *local);
1873 void ieee80211_roc_purge(struct ieee80211_local *local,
1874 			 struct ieee80211_sub_if_data *sdata);
1875 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1876 				struct ieee80211_channel *chan,
1877 				unsigned int duration, u64 *cookie);
1878 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1879 				       struct wireless_dev *wdev, u64 cookie);
1880 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1881 		      struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1882 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1883 				  struct wireless_dev *wdev, u64 cookie);
1884 
1885 /* channel switch handling */
1886 void ieee80211_csa_finalize_work(struct work_struct *work);
1887 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1888 			     struct cfg80211_csa_settings *params);
1889 
1890 /* interface handling */
1891 #define MAC80211_SUPPORTED_FEATURES_TX	(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
1892 					 NETIF_F_HW_CSUM | NETIF_F_SG | \
1893 					 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE)
1894 #define MAC80211_SUPPORTED_FEATURES_RX	(NETIF_F_RXCSUM)
1895 #define MAC80211_SUPPORTED_FEATURES	(MAC80211_SUPPORTED_FEATURES_TX | \
1896 					 MAC80211_SUPPORTED_FEATURES_RX)
1897 
1898 int ieee80211_iface_init(void);
1899 void ieee80211_iface_exit(void);
1900 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1901 		     unsigned char name_assign_type,
1902 		     struct wireless_dev **new_wdev, enum nl80211_iftype type,
1903 		     struct vif_params *params);
1904 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1905 			     enum nl80211_iftype type);
1906 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1907 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1908 u32 ieee80211_idle_off(struct ieee80211_local *local);
1909 void ieee80211_recalc_idle(struct ieee80211_local *local);
1910 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1911 				    const int offset);
1912 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1913 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1914 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1915 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1916 
1917 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1918 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1919 			      bool update_bss);
1920 void ieee80211_recalc_offload(struct ieee80211_local *local);
1921 
1922 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1923 {
1924 	return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1925 }
1926 
1927 /* tx handling */
1928 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1929 void ieee80211_tx_pending(struct tasklet_struct *t);
1930 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1931 					 struct net_device *dev);
1932 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1933 				       struct net_device *dev);
1934 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb,
1935 					    struct net_device *dev);
1936 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1937 				  struct net_device *dev,
1938 				  u32 info_flags,
1939 				  u32 ctrl_flags,
1940 				  u64 *cookie);
1941 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1942 			      struct sk_buff_head *skbs);
1943 struct sk_buff *
1944 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1945 			      struct sk_buff *skb, u32 info_flags);
1946 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1947 			  struct ieee80211_supported_band *sband,
1948 			  int retry_count, int shift, bool send_to_cooked,
1949 			  struct ieee80211_tx_status *status);
1950 
1951 void ieee80211_check_fast_xmit(struct sta_info *sta);
1952 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1953 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1954 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1955 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
1956 			      const u8 *buf, size_t len,
1957 			      const u8 *dest, __be16 proto, bool unencrypted,
1958 			      u64 *cookie);
1959 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
1960 			      const u8 *buf, size_t len);
1961 void ieee80211_resort_txq(struct ieee80211_hw *hw,
1962 			  struct ieee80211_txq *txq);
1963 void ieee80211_unschedule_txq(struct ieee80211_hw *hw,
1964 			      struct ieee80211_txq *txq,
1965 			      bool purge);
1966 void ieee80211_update_airtime_weight(struct ieee80211_local *local,
1967 				     struct airtime_sched_info *air_sched,
1968 				     u64 now, bool force);
1969 
1970 /* HT */
1971 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1972 				     struct ieee80211_sta_ht_cap *ht_cap);
1973 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1974 				       struct ieee80211_supported_band *sband,
1975 				       const struct ieee80211_ht_cap *ht_cap_ie,
1976 				       struct sta_info *sta);
1977 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1978 			  const u8 *da, u16 tid,
1979 			  u16 initiator, u16 reason_code);
1980 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1981 			       enum ieee80211_smps_mode smps, const u8 *da,
1982 			       const u8 *bssid);
1983 void ieee80211_request_smps_ap_work(struct work_struct *work);
1984 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1985 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1986 				   enum ieee80211_smps_mode smps_mode_new);
1987 
1988 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1989 				     u16 initiator, u16 reason, bool stop);
1990 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1991 				    u16 initiator, u16 reason, bool stop);
1992 void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
1993 				      u8 dialog_token, u16 timeout,
1994 				      u16 start_seq_num, u16 ba_policy, u16 tid,
1995 				      u16 buf_size, bool tx, bool auto_seq,
1996 				      const struct ieee80211_addba_ext_ie *addbaext);
1997 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1998 					 enum ieee80211_agg_stop_reason reason);
1999 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
2000 			     struct sta_info *sta,
2001 			     struct ieee80211_mgmt *mgmt, size_t len);
2002 void ieee80211_process_addba_resp(struct ieee80211_local *local,
2003 				  struct sta_info *sta,
2004 				  struct ieee80211_mgmt *mgmt,
2005 				  size_t len);
2006 void ieee80211_process_addba_request(struct ieee80211_local *local,
2007 				     struct sta_info *sta,
2008 				     struct ieee80211_mgmt *mgmt,
2009 				     size_t len);
2010 
2011 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2012 				   enum ieee80211_agg_stop_reason reason);
2013 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2014 				    enum ieee80211_agg_stop_reason reason);
2015 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
2016 			      struct tid_ampdu_tx *tid_tx);
2017 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
2018 			     struct tid_ampdu_tx *tid_tx);
2019 void ieee80211_ba_session_work(struct work_struct *work);
2020 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
2021 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
2022 
2023 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
2024 enum nl80211_smps_mode
2025 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
2026 
2027 /* VHT */
2028 void
2029 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
2030 				    struct ieee80211_supported_band *sband,
2031 				    const struct ieee80211_vht_cap *vht_cap_ie,
2032 				    struct sta_info *sta);
2033 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
2034 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
2035 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
2036 enum ieee80211_sta_rx_bandwidth
2037 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
2038 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
2039 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
2040 				 struct ieee80211_mgmt *mgmt);
2041 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2042                                   struct sta_info *sta, u8 opmode,
2043 				  enum nl80211_band band);
2044 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2045 				 struct sta_info *sta, u8 opmode,
2046 				 enum nl80211_band band);
2047 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
2048 				      struct ieee80211_sta_vht_cap *vht_cap);
2049 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
2050 				     u16 vht_mask[NL80211_VHT_NSS_MAX]);
2051 enum nl80211_chan_width
2052 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta);
2053 
2054 /* HE */
2055 void
2056 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
2057 				  struct ieee80211_supported_band *sband,
2058 				  const u8 *he_cap_ie, u8 he_cap_len,
2059 				  const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
2060 				  struct sta_info *sta);
2061 void
2062 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
2063 				const struct ieee80211_he_spr *he_spr_ie_elem);
2064 
2065 void
2066 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
2067 			const struct ieee80211_he_operation *he_op_ie_elem);
2068 
2069 /* S1G */
2070 void ieee80211_s1g_sta_rate_init(struct sta_info *sta);
2071 
2072 /* Spectrum management */
2073 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
2074 				       struct ieee80211_mgmt *mgmt,
2075 				       size_t len);
2076 /**
2077  * ieee80211_parse_ch_switch_ie - parses channel switch IEs
2078  * @sdata: the sdata of the interface which has received the frame
2079  * @elems: parsed 802.11 elements received with the frame
2080  * @current_band: indicates the current band
2081  * @vht_cap_info: VHT capabilities of the transmitter
2082  * @sta_flags: contains information about own capabilities and restrictions
2083  *	to decide which channel switch announcements can be accepted. Only the
2084  *	following subset of &enum ieee80211_sta_flags are evaluated:
2085  *	%IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
2086  *	%IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
2087  *	%IEEE80211_STA_DISABLE_160MHZ.
2088  * @bssid: the currently connected bssid (for reporting)
2089  * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
2090 	All of them will be filled with if success only.
2091  * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
2092  */
2093 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
2094 				 struct ieee802_11_elems *elems,
2095 				 enum nl80211_band current_band,
2096 				 u32 vht_cap_info,
2097 				 u32 sta_flags, u8 *bssid,
2098 				 struct ieee80211_csa_ie *csa_ie);
2099 
2100 /* Suspend/resume and hw reconfiguration */
2101 int ieee80211_reconfig(struct ieee80211_local *local);
2102 void ieee80211_stop_device(struct ieee80211_local *local);
2103 
2104 int __ieee80211_suspend(struct ieee80211_hw *hw,
2105 			struct cfg80211_wowlan *wowlan);
2106 
2107 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
2108 {
2109 	struct ieee80211_local *local = hw_to_local(hw);
2110 
2111 	WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
2112 	     !test_bit(SCAN_COMPLETED, &local->scanning),
2113 		"%s: resume with hardware scan still in progress\n",
2114 		wiphy_name(hw->wiphy));
2115 
2116 	return ieee80211_reconfig(hw_to_local(hw));
2117 }
2118 
2119 /* utility functions/constants */
2120 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
2121 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
2122 			     int rate, int erp, int short_preamble,
2123 			     int shift);
2124 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
2125 					   struct ieee80211_tx_queue_params *qparam,
2126 					   int ac);
2127 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
2128 			       bool bss_notify, bool enable_qos);
2129 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
2130 		    struct sta_info *sta, struct sk_buff *skb);
2131 
2132 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2133 				 struct sk_buff *skb, int tid,
2134 				 enum nl80211_band band);
2135 
2136 /* sta_out needs to be checked for ERR_PTR() before using */
2137 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata,
2138 			    struct sk_buff *skb,
2139 			    struct sta_info **sta_out);
2140 
2141 static inline void
2142 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2143 			  struct sk_buff *skb, int tid,
2144 			  enum nl80211_band band)
2145 {
2146 	rcu_read_lock();
2147 	__ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
2148 	rcu_read_unlock();
2149 }
2150 
2151 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
2152 					struct sk_buff *skb, int tid)
2153 {
2154 	struct ieee80211_chanctx_conf *chanctx_conf;
2155 
2156 	rcu_read_lock();
2157 	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2158 	if (WARN_ON(!chanctx_conf)) {
2159 		rcu_read_unlock();
2160 		kfree_skb(skb);
2161 		return;
2162 	}
2163 
2164 	__ieee80211_tx_skb_tid_band(sdata, skb, tid,
2165 				    chanctx_conf->def.chan->band);
2166 	rcu_read_unlock();
2167 }
2168 
2169 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
2170 				    struct sk_buff *skb)
2171 {
2172 	/* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
2173 	ieee80211_tx_skb_tid(sdata, skb, 7);
2174 }
2175 
2176 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
2177 			       struct ieee802_11_elems *elems,
2178 			       u64 filter, u32 crc, u8 *transmitter_bssid,
2179 			       u8 *bss_bssid);
2180 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
2181 					  bool action,
2182 					  struct ieee802_11_elems *elems,
2183 					  u8 *transmitter_bssid,
2184 					  u8 *bss_bssid)
2185 {
2186 	ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0,
2187 				   transmitter_bssid, bss_bssid);
2188 }
2189 
2190 
2191 extern const int ieee802_1d_to_ac[8];
2192 
2193 static inline int ieee80211_ac_from_tid(int tid)
2194 {
2195 	return ieee802_1d_to_ac[tid & 7];
2196 }
2197 
2198 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
2199 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
2200 void ieee80211_dynamic_ps_timer(struct timer_list *t);
2201 void ieee80211_send_nullfunc(struct ieee80211_local *local,
2202 			     struct ieee80211_sub_if_data *sdata,
2203 			     bool powersave);
2204 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
2205 				   struct ieee80211_sub_if_data *sdata);
2206 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2207 			     struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
2208 
2209 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
2210 				     unsigned long queues,
2211 				     enum queue_stop_reason reason,
2212 				     bool refcounted);
2213 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
2214 			       struct ieee80211_sub_if_data *sdata,
2215 			       enum queue_stop_reason reason);
2216 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
2217 			       struct ieee80211_sub_if_data *sdata,
2218 			       enum queue_stop_reason reason);
2219 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
2220 				     unsigned long queues,
2221 				     enum queue_stop_reason reason,
2222 				     bool refcounted);
2223 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
2224 				    enum queue_stop_reason reason,
2225 				    bool refcounted);
2226 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
2227 				    enum queue_stop_reason reason,
2228 				    bool refcounted);
2229 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
2230 void ieee80211_add_pending_skb(struct ieee80211_local *local,
2231 			       struct sk_buff *skb);
2232 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
2233 				struct sk_buff_head *skbs);
2234 void ieee80211_flush_queues(struct ieee80211_local *local,
2235 			    struct ieee80211_sub_if_data *sdata, bool drop);
2236 void __ieee80211_flush_queues(struct ieee80211_local *local,
2237 			      struct ieee80211_sub_if_data *sdata,
2238 			      unsigned int queues, bool drop);
2239 
2240 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2241 {
2242 	/*
2243 	 * It's unsafe to try to do any work during reconfigure flow.
2244 	 * When the flow ends the work will be requeued.
2245 	 */
2246 	if (local->in_reconfig)
2247 		return false;
2248 
2249 	/*
2250 	 * If quiescing is set, we are racing with __ieee80211_suspend.
2251 	 * __ieee80211_suspend flushes the workers after setting quiescing,
2252 	 * and we check quiescing / suspended before enqueing new workers.
2253 	 * We should abort the worker to avoid the races below.
2254 	 */
2255 	if (local->quiescing)
2256 		return false;
2257 
2258 	/*
2259 	 * We might already be suspended if the following scenario occurs:
2260 	 * __ieee80211_suspend		Control path
2261 	 *
2262 	 *				if (local->quiescing)
2263 	 *					return;
2264 	 * local->quiescing = true;
2265 	 * flush_workqueue();
2266 	 *				queue_work(...);
2267 	 * local->suspended = true;
2268 	 * local->quiescing = false;
2269 	 *				worker starts running...
2270 	 */
2271 	if (local->suspended)
2272 		return false;
2273 
2274 	return true;
2275 }
2276 
2277 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2278 void ieee80211_txq_set_params(struct ieee80211_local *local);
2279 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2280 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2281 			struct sta_info *sta,
2282 			struct txq_info *txq, int tid);
2283 void ieee80211_txq_purge(struct ieee80211_local *local,
2284 			 struct txq_info *txqi);
2285 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2286 			       struct ieee80211_sub_if_data *sdata);
2287 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2288 			      struct txq_info *txqi);
2289 void ieee80211_wake_txqs(struct tasklet_struct *t);
2290 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2291 			 u16 transaction, u16 auth_alg, u16 status,
2292 			 const u8 *extra, size_t extra_len, const u8 *bssid,
2293 			 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2294 			 u32 tx_flags);
2295 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2296 				    const u8 *da, const u8 *bssid,
2297 				    u16 stype, u16 reason,
2298 				    bool send_frame, u8 *frame_buf);
2299 
2300 enum {
2301 	IEEE80211_PROBE_FLAG_DIRECTED		= BIT(0),
2302 	IEEE80211_PROBE_FLAG_MIN_CONTENT	= BIT(1),
2303 	IEEE80211_PROBE_FLAG_RANDOM_SN		= BIT(2),
2304 };
2305 
2306 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2307 			     size_t buffer_len,
2308 			     struct ieee80211_scan_ies *ie_desc,
2309 			     const u8 *ie, size_t ie_len,
2310 			     u8 bands_used, u32 *rate_masks,
2311 			     struct cfg80211_chan_def *chandef,
2312 			     u32 flags);
2313 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2314 					  const u8 *src, const u8 *dst,
2315 					  u32 ratemask,
2316 					  struct ieee80211_channel *chan,
2317 					  const u8 *ssid, size_t ssid_len,
2318 					  const u8 *ie, size_t ie_len,
2319 					  u32 flags);
2320 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2321 			    struct ieee802_11_elems *elems,
2322 			    enum nl80211_band band, u32 *basic_rates);
2323 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2324 				 enum ieee80211_smps_mode smps_mode);
2325 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
2326 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
2327 
2328 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2329 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2330 			      u16 cap);
2331 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2332 			       const struct cfg80211_chan_def *chandef,
2333 			       u16 prot_mode, bool rifs_mode);
2334 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2335 				   const struct cfg80211_chan_def *chandef);
2336 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2337 			       u32 cap);
2338 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2339 				const struct cfg80211_chan_def *chandef);
2340 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2341 u8 *ieee80211_ie_build_he_cap(u8 *pos,
2342 			      const struct ieee80211_sta_he_cap *he_cap,
2343 			      u8 *end);
2344 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2345 				    struct sk_buff *skb);
2346 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef);
2347 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2348 			     const struct ieee80211_supported_band *sband,
2349 			     const u8 *srates, int srates_len, u32 *rates);
2350 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2351 			    struct sk_buff *skb, bool need_basic,
2352 			    enum nl80211_band band);
2353 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2354 				struct sk_buff *skb, bool need_basic,
2355 				enum nl80211_band band);
2356 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2357 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
2358 				struct ieee80211_sta_s1g_cap *caps,
2359 				struct sk_buff *skb);
2360 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
2361 				  struct sk_buff *skb);
2362 
2363 /* channel management */
2364 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2365 			       struct cfg80211_chan_def *chandef);
2366 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
2367 				const struct ieee80211_vht_operation *oper,
2368 				const struct ieee80211_ht_operation *htop,
2369 				struct cfg80211_chan_def *chandef);
2370 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
2371 				    const struct ieee80211_he_operation *he_oper,
2372 				    struct cfg80211_chan_def *chandef);
2373 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
2374 				struct cfg80211_chan_def *chandef);
2375 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2376 
2377 int __must_check
2378 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
2379 			  const struct cfg80211_chan_def *chandef,
2380 			  enum ieee80211_chanctx_mode mode);
2381 int __must_check
2382 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
2383 			      const struct cfg80211_chan_def *chandef,
2384 			      enum ieee80211_chanctx_mode mode,
2385 			      bool radar_required);
2386 int __must_check
2387 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2388 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2389 
2390 int __must_check
2391 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2392 			       const struct cfg80211_chan_def *chandef,
2393 			       u32 *changed);
2394 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2395 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2396 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2397 					 bool clear);
2398 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2399 			       struct ieee80211_chanctx *ctx);
2400 
2401 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2402 				   struct ieee80211_chanctx *chanctx);
2403 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2404 				      struct ieee80211_chanctx *ctx);
2405 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2406 
2407 void ieee80211_dfs_cac_timer(unsigned long data);
2408 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2409 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2410 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2411 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2412 			      struct cfg80211_csa_settings *csa_settings);
2413 
2414 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2415 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2416 const struct ieee80211_cipher_scheme *
2417 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2418 		 enum nl80211_iftype iftype);
2419 int ieee80211_cs_headroom(struct ieee80211_local *local,
2420 			  struct cfg80211_crypto_settings *crypto,
2421 			  enum nl80211_iftype iftype);
2422 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2423 			   struct ieee80211_sub_if_data *sdata);
2424 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2425 				 const struct cfg80211_chan_def *chandef,
2426 				 enum ieee80211_chanctx_mode chanmode,
2427 				 u8 radar_detect);
2428 int ieee80211_max_num_channels(struct ieee80211_local *local);
2429 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2430 				       struct ieee80211_chanctx *ctx);
2431 
2432 /* TDLS */
2433 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2434 			const u8 *peer, u8 action_code, u8 dialog_token,
2435 			u16 status_code, u32 peer_capability,
2436 			bool initiator, const u8 *extra_ies,
2437 			size_t extra_ies_len);
2438 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2439 			const u8 *peer, enum nl80211_tdls_operation oper);
2440 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2441 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2442 				  const u8 *addr, u8 oper_class,
2443 				  struct cfg80211_chan_def *chandef);
2444 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2445 					  struct net_device *dev,
2446 					  const u8 *addr);
2447 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2448 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2449 				      const u8 *peer, u16 reason);
2450 void
2451 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata,
2452 				      struct sk_buff *skb);
2453 
2454 
2455 const char *ieee80211_get_reason_code_string(u16 reason_code);
2456 u16 ieee80211_encode_usf(int val);
2457 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
2458 			enum nl80211_iftype type);
2459 
2460 extern const struct ethtool_ops ieee80211_ethtool_ops;
2461 
2462 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw,
2463 				       struct ieee80211_vif *vif,
2464 				       struct ieee80211_sta *pubsta,
2465 				       int len, bool ampdu);
2466 #ifdef CONFIG_MAC80211_NOINLINE
2467 #define debug_noinline noinline
2468 #else
2469 #define debug_noinline
2470 #endif
2471 
2472 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache);
2473 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache);
2474 
2475 #endif /* IEEE80211_I_H */
2476