xref: /linux/net/mac80211/ieee80211_i.h (revision d91517839e5d95adc0cf4b28caa7af62a71de526)
1 /*
2  * Copyright 2002-2005, Instant802 Networks, Inc.
3  * Copyright 2005, Devicescape Software, Inc.
4  * Copyright 2006-2007	Jiri Benc <jbenc@suse.cz>
5  * Copyright 2007-2010	Johannes Berg <johannes@sipsolutions.net>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 as
9  * published by the Free Software Foundation.
10  */
11 
12 #ifndef IEEE80211_I_H
13 #define IEEE80211_I_H
14 
15 #include <linux/kernel.h>
16 #include <linux/device.h>
17 #include <linux/if_ether.h>
18 #include <linux/interrupt.h>
19 #include <linux/list.h>
20 #include <linux/netdevice.h>
21 #include <linux/skbuff.h>
22 #include <linux/workqueue.h>
23 #include <linux/types.h>
24 #include <linux/spinlock.h>
25 #include <linux/etherdevice.h>
26 #include <linux/leds.h>
27 #include <linux/idr.h>
28 #include <net/ieee80211_radiotap.h>
29 #include <net/cfg80211.h>
30 #include <net/mac80211.h>
31 #include "key.h"
32 #include "sta_info.h"
33 #include "debug.h"
34 
35 struct ieee80211_local;
36 
37 /* Maximum number of broadcast/multicast frames to buffer when some of the
38  * associated stations are using power saving. */
39 #define AP_MAX_BC_BUFFER 128
40 
41 /* Maximum number of frames buffered to all STAs, including multicast frames.
42  * Note: increasing this limit increases the potential memory requirement. Each
43  * frame can be up to about 2 kB long. */
44 #define TOTAL_MAX_TX_BUFFER 512
45 
46 /* Required encryption head and tailroom */
47 #define IEEE80211_ENCRYPT_HEADROOM 8
48 #define IEEE80211_ENCRYPT_TAILROOM 18
49 
50 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
51  * reception of at least three fragmented frames. This limit can be increased
52  * by changing this define, at the cost of slower frame reassembly and
53  * increased memory use (about 2 kB of RAM per entry). */
54 #define IEEE80211_FRAGMENT_MAX 4
55 
56 /* power level hasn't been configured (or set to automatic) */
57 #define IEEE80211_UNSET_POWER_LEVEL	INT_MIN
58 
59 /*
60  * Some APs experience problems when working with U-APSD. Decrease the
61  * probability of that happening by using legacy mode for all ACs but VO.
62  * The AP that caused us trouble was a Cisco 4410N. It ignores our
63  * setting, and always treats non-VO ACs as legacy.
64  */
65 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
66 	IEEE80211_WMM_IE_STA_QOSINFO_AC_VO
67 
68 #define IEEE80211_DEFAULT_MAX_SP_LEN		\
69 	IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
70 
71 #define IEEE80211_DEAUTH_FRAME_LEN	(24 /* hdr */ + 2 /* reason */)
72 
73 struct ieee80211_fragment_entry {
74 	unsigned long first_frag_time;
75 	unsigned int seq;
76 	unsigned int rx_queue;
77 	unsigned int last_frag;
78 	unsigned int extra_len;
79 	struct sk_buff_head skb_list;
80 	int ccmp; /* Whether fragments were encrypted with CCMP */
81 	u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
82 };
83 
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 	/*
97 	 * During association, we save an ERP value from a probe response so
98 	 * that we can feed ERP info to the driver when handling the
99 	 * association completes. these fields probably won't be up-to-date
100 	 * otherwise, you probably don't want to use them.
101 	 */
102 	bool has_erp_value;
103 	u8 erp_value;
104 
105 	/* Keep track of the corruption of the last beacon/probe response. */
106 	u8 corrupt_data;
107 
108 	/* Keep track of what bits of information we have valid info for. */
109 	u8 valid_data;
110 };
111 
112 /**
113  * enum ieee80211_corrupt_data_flags - BSS data corruption flags
114  * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
115  * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
116  *
117  * These are bss flags that are attached to a bss in the
118  * @corrupt_data field of &struct ieee80211_bss.
119  */
120 enum ieee80211_bss_corrupt_data_flags {
121 	IEEE80211_BSS_CORRUPT_BEACON		= BIT(0),
122 	IEEE80211_BSS_CORRUPT_PROBE_RESP	= BIT(1)
123 };
124 
125 /**
126  * enum ieee80211_valid_data_flags - BSS valid data flags
127  * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
128  * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
129  * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
130  *
131  * These are bss flags that are attached to a bss in the
132  * @valid_data field of &struct ieee80211_bss.  They show which parts
133  * of the data structure were recieved as a result of an un-corrupted
134  * beacon/probe response.
135  */
136 enum ieee80211_bss_valid_data_flags {
137 	IEEE80211_BSS_VALID_WMM			= BIT(1),
138 	IEEE80211_BSS_VALID_RATES		= BIT(2),
139 	IEEE80211_BSS_VALID_ERP			= BIT(3)
140 };
141 
142 typedef unsigned __bitwise__ ieee80211_tx_result;
143 #define TX_CONTINUE	((__force ieee80211_tx_result) 0u)
144 #define TX_DROP		((__force ieee80211_tx_result) 1u)
145 #define TX_QUEUED	((__force ieee80211_tx_result) 2u)
146 
147 #define IEEE80211_TX_UNICAST		BIT(1)
148 #define IEEE80211_TX_PS_BUFFERED	BIT(2)
149 
150 struct ieee80211_tx_data {
151 	struct sk_buff *skb;
152 	struct sk_buff_head skbs;
153 	struct ieee80211_local *local;
154 	struct ieee80211_sub_if_data *sdata;
155 	struct sta_info *sta;
156 	struct ieee80211_key *key;
157 	struct ieee80211_tx_rate rate;
158 
159 	unsigned int flags;
160 };
161 
162 
163 typedef unsigned __bitwise__ ieee80211_rx_result;
164 #define RX_CONTINUE		((__force ieee80211_rx_result) 0u)
165 #define RX_DROP_UNUSABLE	((__force ieee80211_rx_result) 1u)
166 #define RX_DROP_MONITOR		((__force ieee80211_rx_result) 2u)
167 #define RX_QUEUED		((__force ieee80211_rx_result) 3u)
168 
169 /**
170  * enum ieee80211_packet_rx_flags - packet RX flags
171  * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
172  *	(incl. multicast frames)
173  * @IEEE80211_RX_FRAGMENTED: fragmented frame
174  * @IEEE80211_RX_AMSDU: a-MSDU packet
175  * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
176  * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
177  *
178  * These are per-frame flags that are attached to a frame in the
179  * @rx_flags field of &struct ieee80211_rx_status.
180  */
181 enum ieee80211_packet_rx_flags {
182 	IEEE80211_RX_RA_MATCH			= BIT(1),
183 	IEEE80211_RX_FRAGMENTED			= BIT(2),
184 	IEEE80211_RX_AMSDU			= BIT(3),
185 	IEEE80211_RX_MALFORMED_ACTION_FRM	= BIT(4),
186 	IEEE80211_RX_DEFERRED_RELEASE		= BIT(5),
187 };
188 
189 /**
190  * enum ieee80211_rx_flags - RX data flags
191  *
192  * @IEEE80211_RX_CMNTR: received on cooked monitor already
193  * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
194  *	to cfg80211_report_obss_beacon().
195  *
196  * These flags are used across handling multiple interfaces
197  * for a single frame.
198  */
199 enum ieee80211_rx_flags {
200 	IEEE80211_RX_CMNTR		= BIT(0),
201 	IEEE80211_RX_BEACON_REPORTED	= BIT(1),
202 };
203 
204 struct ieee80211_rx_data {
205 	struct sk_buff *skb;
206 	struct ieee80211_local *local;
207 	struct ieee80211_sub_if_data *sdata;
208 	struct sta_info *sta;
209 	struct ieee80211_key *key;
210 
211 	unsigned int flags;
212 
213 	/*
214 	 * Index into sequence numbers array, 0..16
215 	 * since the last (16) is used for non-QoS,
216 	 * will be 16 on non-QoS frames.
217 	 */
218 	int seqno_idx;
219 
220 	/*
221 	 * Index into the security IV/PN arrays, 0..16
222 	 * since the last (16) is used for CCMP-encrypted
223 	 * management frames, will be set to 16 on mgmt
224 	 * frames and 0 on non-QoS frames.
225 	 */
226 	int security_idx;
227 
228 	u32 tkip_iv32;
229 	u16 tkip_iv16;
230 };
231 
232 struct beacon_data {
233 	u8 *head, *tail;
234 	int head_len, tail_len;
235 	struct ieee80211_meshconf_ie *meshconf;
236 	struct rcu_head rcu_head;
237 };
238 
239 struct probe_resp {
240 	struct rcu_head rcu_head;
241 	int len;
242 	u8 data[0];
243 };
244 
245 struct ps_data {
246 	/* yes, this looks ugly, but guarantees that we can later use
247 	 * bitmap_empty :)
248 	 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
249 	u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
250 			__aligned(__alignof__(unsigned long));
251 	struct sk_buff_head bc_buf;
252 	atomic_t num_sta_ps; /* number of stations in PS mode */
253 	int dtim_count;
254 	bool dtim_bc_mc;
255 };
256 
257 struct ieee80211_if_ap {
258 	struct beacon_data __rcu *beacon;
259 	struct probe_resp __rcu *probe_resp;
260 
261 	/* to be used after channel switch. */
262 	struct cfg80211_beacon_data *next_beacon;
263 	struct list_head vlans;
264 
265 	struct ps_data ps;
266 	atomic_t num_mcast_sta; /* number of stations receiving multicast */
267 	enum ieee80211_smps_mode req_smps, /* requested smps mode */
268 			 driver_smps_mode; /* smps mode request */
269 
270 	struct work_struct request_smps_work;
271 };
272 
273 struct ieee80211_if_wds {
274 	struct sta_info *sta;
275 	u8 remote_addr[ETH_ALEN];
276 };
277 
278 struct ieee80211_if_vlan {
279 	struct list_head list;
280 
281 	/* used for all tx if the VLAN is configured to 4-addr mode */
282 	struct sta_info __rcu *sta;
283 };
284 
285 struct mesh_stats {
286 	__u32 fwded_mcast;		/* Mesh forwarded multicast frames */
287 	__u32 fwded_unicast;		/* Mesh forwarded unicast frames */
288 	__u32 fwded_frames;		/* Mesh total forwarded frames */
289 	__u32 dropped_frames_ttl;	/* Not transmitted since mesh_ttl == 0*/
290 	__u32 dropped_frames_no_route;	/* Not transmitted, no route found */
291 	__u32 dropped_frames_congestion;/* Not forwarded due to congestion */
292 };
293 
294 #define PREQ_Q_F_START		0x1
295 #define PREQ_Q_F_REFRESH	0x2
296 struct mesh_preq_queue {
297 	struct list_head list;
298 	u8 dst[ETH_ALEN];
299 	u8 flags;
300 };
301 
302 #if HZ/100 == 0
303 #define IEEE80211_ROC_MIN_LEFT	1
304 #else
305 #define IEEE80211_ROC_MIN_LEFT	(HZ/100)
306 #endif
307 
308 struct ieee80211_roc_work {
309 	struct list_head list;
310 	struct list_head dependents;
311 
312 	struct delayed_work work;
313 
314 	struct ieee80211_sub_if_data *sdata;
315 
316 	struct ieee80211_channel *chan;
317 
318 	bool started, abort, hw_begun, notified;
319 	bool to_be_freed;
320 
321 	unsigned long hw_start_time;
322 
323 	u32 duration, req_duration;
324 	struct sk_buff *frame;
325 	u64 cookie, mgmt_tx_cookie;
326 	enum ieee80211_roc_type type;
327 };
328 
329 /* flags used in struct ieee80211_if_managed.flags */
330 enum ieee80211_sta_flags {
331 	IEEE80211_STA_CONNECTION_POLL	= BIT(1),
332 	IEEE80211_STA_CONTROL_PORT	= BIT(2),
333 	IEEE80211_STA_DISABLE_HT	= BIT(4),
334 	IEEE80211_STA_CSA_RECEIVED	= BIT(5),
335 	IEEE80211_STA_MFP_ENABLED	= BIT(6),
336 	IEEE80211_STA_UAPSD_ENABLED	= BIT(7),
337 	IEEE80211_STA_NULLFUNC_ACKED	= BIT(8),
338 	IEEE80211_STA_RESET_SIGNAL_AVE	= BIT(9),
339 	IEEE80211_STA_DISABLE_40MHZ	= BIT(10),
340 	IEEE80211_STA_DISABLE_VHT	= BIT(11),
341 	IEEE80211_STA_DISABLE_80P80MHZ	= BIT(12),
342 	IEEE80211_STA_DISABLE_160MHZ	= BIT(13),
343 	IEEE80211_STA_DISABLE_WMM	= BIT(14),
344 };
345 
346 struct ieee80211_mgd_auth_data {
347 	struct cfg80211_bss *bss;
348 	unsigned long timeout;
349 	int tries;
350 	u16 algorithm, expected_transaction;
351 
352 	u8 key[WLAN_KEY_LEN_WEP104];
353 	u8 key_len, key_idx;
354 	bool done;
355 	bool timeout_started;
356 
357 	u16 sae_trans, sae_status;
358 	size_t data_len;
359 	u8 data[];
360 };
361 
362 struct ieee80211_mgd_assoc_data {
363 	struct cfg80211_bss *bss;
364 	const u8 *supp_rates;
365 
366 	unsigned long timeout;
367 	int tries;
368 
369 	u16 capability;
370 	u8 prev_bssid[ETH_ALEN];
371 	u8 ssid[IEEE80211_MAX_SSID_LEN];
372 	u8 ssid_len;
373 	u8 supp_rates_len;
374 	bool wmm, uapsd;
375 	bool need_beacon;
376 	bool synced;
377 	bool timeout_started;
378 
379 	u8 ap_ht_param;
380 
381 	struct ieee80211_vht_cap ap_vht_cap;
382 
383 	size_t ie_len;
384 	u8 ie[];
385 };
386 
387 struct ieee80211_if_managed {
388 	struct timer_list timer;
389 	struct timer_list conn_mon_timer;
390 	struct timer_list bcn_mon_timer;
391 	struct timer_list chswitch_timer;
392 	struct work_struct monitor_work;
393 	struct work_struct chswitch_work;
394 	struct work_struct beacon_connection_loss_work;
395 	struct work_struct csa_connection_drop_work;
396 
397 	unsigned long beacon_timeout;
398 	unsigned long probe_timeout;
399 	int probe_send_count;
400 	bool nullfunc_failed;
401 	bool connection_loss;
402 
403 	struct cfg80211_bss *associated;
404 	struct ieee80211_mgd_auth_data *auth_data;
405 	struct ieee80211_mgd_assoc_data *assoc_data;
406 
407 	u8 bssid[ETH_ALEN];
408 
409 	u16 aid;
410 
411 	bool powersave; /* powersave requested for this iface */
412 	bool broken_ap; /* AP is broken -- turn off powersave */
413 	bool have_beacon;
414 	u8 dtim_period;
415 	enum ieee80211_smps_mode req_smps, /* requested smps mode */
416 				 driver_smps_mode; /* smps mode request */
417 
418 	struct work_struct request_smps_work;
419 
420 	unsigned int flags;
421 
422 	bool beacon_crc_valid;
423 	u32 beacon_crc;
424 
425 	bool status_acked;
426 	bool status_received;
427 	__le16 status_fc;
428 
429 	enum {
430 		IEEE80211_MFP_DISABLED,
431 		IEEE80211_MFP_OPTIONAL,
432 		IEEE80211_MFP_REQUIRED
433 	} mfp; /* management frame protection */
434 
435 	/*
436 	 * Bitmask of enabled u-apsd queues,
437 	 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
438 	 * to take effect.
439 	 */
440 	unsigned int uapsd_queues;
441 
442 	/*
443 	 * Maximum number of buffered frames AP can deliver during a
444 	 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
445 	 * Needs a new association to take effect.
446 	 */
447 	unsigned int uapsd_max_sp_len;
448 
449 	int wmm_last_param_set;
450 
451 	u8 use_4addr;
452 
453 	s16 p2p_noa_index;
454 
455 	/* Signal strength from the last Beacon frame in the current BSS. */
456 	int last_beacon_signal;
457 
458 	/*
459 	 * Weighted average of the signal strength from Beacon frames in the
460 	 * current BSS. This is in units of 1/16 of the signal unit to maintain
461 	 * accuracy and to speed up calculations, i.e., the value need to be
462 	 * divided by 16 to get the actual value.
463 	 */
464 	int ave_beacon_signal;
465 
466 	/*
467 	 * Number of Beacon frames used in ave_beacon_signal. This can be used
468 	 * to avoid generating less reliable cqm events that would be based
469 	 * only on couple of received frames.
470 	 */
471 	unsigned int count_beacon_signal;
472 
473 	/*
474 	 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
475 	 * that triggered a cqm event. 0 indicates that no event has been
476 	 * generated for the current association.
477 	 */
478 	int last_cqm_event_signal;
479 
480 	/*
481 	 * State variables for keeping track of RSSI of the AP currently
482 	 * connected to and informing driver when RSSI has gone
483 	 * below/above a certain threshold.
484 	 */
485 	int rssi_min_thold, rssi_max_thold;
486 	int last_ave_beacon_signal;
487 
488 	struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
489 	struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
490 	struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
491 	struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
492 };
493 
494 struct ieee80211_if_ibss {
495 	struct timer_list timer;
496 	struct work_struct csa_connection_drop_work;
497 
498 	unsigned long last_scan_completed;
499 
500 	u32 basic_rates;
501 
502 	bool fixed_bssid;
503 	bool fixed_channel;
504 	bool privacy;
505 
506 	bool control_port;
507 	bool userspace_handles_dfs;
508 
509 	u8 bssid[ETH_ALEN] __aligned(2);
510 	u8 ssid[IEEE80211_MAX_SSID_LEN];
511 	u8 ssid_len, ie_len;
512 	u8 *ie;
513 	struct cfg80211_chan_def chandef;
514 
515 	unsigned long ibss_join_req;
516 	/* probe response/beacon for IBSS */
517 	struct beacon_data __rcu *presp;
518 
519 	struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
520 	struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
521 
522 	spinlock_t incomplete_lock;
523 	struct list_head incomplete_stations;
524 
525 	enum {
526 		IEEE80211_IBSS_MLME_SEARCH,
527 		IEEE80211_IBSS_MLME_JOINED,
528 	} state;
529 };
530 
531 /**
532  * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
533  *
534  * these declarations define the interface, which enables
535  * vendor-specific mesh synchronization
536  *
537  */
538 struct ieee802_11_elems;
539 struct ieee80211_mesh_sync_ops {
540 	void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
541 			     u16 stype,
542 			     struct ieee80211_mgmt *mgmt,
543 			     struct ieee802_11_elems *elems,
544 			     struct ieee80211_rx_status *rx_status);
545 
546 	/* should be called with beacon_data under RCU read lock */
547 	void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata,
548 			    struct beacon_data *beacon);
549 	/* add other framework functions here */
550 };
551 
552 struct mesh_csa_settings {
553 	struct rcu_head rcu_head;
554 	struct cfg80211_csa_settings settings;
555 };
556 
557 struct ieee80211_if_mesh {
558 	struct timer_list housekeeping_timer;
559 	struct timer_list mesh_path_timer;
560 	struct timer_list mesh_path_root_timer;
561 
562 	unsigned long wrkq_flags;
563 	unsigned long mbss_changed;
564 
565 	u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
566 	size_t mesh_id_len;
567 	/* Active Path Selection Protocol Identifier */
568 	u8 mesh_pp_id;
569 	/* Active Path Selection Metric Identifier */
570 	u8 mesh_pm_id;
571 	/* Congestion Control Mode Identifier */
572 	u8 mesh_cc_id;
573 	/* Synchronization Protocol Identifier */
574 	u8 mesh_sp_id;
575 	/* Authentication Protocol Identifier */
576 	u8 mesh_auth_id;
577 	/* Local mesh Sequence Number */
578 	u32 sn;
579 	/* Last used PREQ ID */
580 	u32 preq_id;
581 	atomic_t mpaths;
582 	/* Timestamp of last SN update */
583 	unsigned long last_sn_update;
584 	/* Time when it's ok to send next PERR */
585 	unsigned long next_perr;
586 	/* Timestamp of last PREQ sent */
587 	unsigned long last_preq;
588 	struct mesh_rmc *rmc;
589 	spinlock_t mesh_preq_queue_lock;
590 	struct mesh_preq_queue preq_queue;
591 	int preq_queue_len;
592 	struct mesh_stats mshstats;
593 	struct mesh_config mshcfg;
594 	atomic_t estab_plinks;
595 	u32 mesh_seqnum;
596 	bool accepting_plinks;
597 	int num_gates;
598 	struct beacon_data __rcu *beacon;
599 	const u8 *ie;
600 	u8 ie_len;
601 	enum {
602 		IEEE80211_MESH_SEC_NONE = 0x0,
603 		IEEE80211_MESH_SEC_AUTHED = 0x1,
604 		IEEE80211_MESH_SEC_SECURED = 0x2,
605 	} security;
606 	bool user_mpm;
607 	/* Extensible Synchronization Framework */
608 	const struct ieee80211_mesh_sync_ops *sync_ops;
609 	s64 sync_offset_clockdrift_max;
610 	spinlock_t sync_offset_lock;
611 	bool adjusting_tbtt;
612 	/* mesh power save */
613 	enum nl80211_mesh_power_mode nonpeer_pm;
614 	int ps_peers_light_sleep;
615 	int ps_peers_deep_sleep;
616 	struct ps_data ps;
617 	/* Channel Switching Support */
618 	struct mesh_csa_settings __rcu *csa;
619 	bool chsw_init;
620 	u8 chsw_ttl;
621 	u16 pre_value;
622 
623 	/* offset from skb->data while building IE */
624 	int meshconf_offset;
625 };
626 
627 #ifdef CONFIG_MAC80211_MESH
628 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name)	\
629 	do { (msh)->mshstats.name++; } while (0)
630 #else
631 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
632 	do { } while (0)
633 #endif
634 
635 /**
636  * enum ieee80211_sub_if_data_flags - virtual interface flags
637  *
638  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
639  * @IEEE80211_SDATA_PROMISC: interface is promisc
640  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
641  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
642  *	associated stations and deliver multicast frames both
643  *	back to wireless media and to the local net stack.
644  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
645  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
646  */
647 enum ieee80211_sub_if_data_flags {
648 	IEEE80211_SDATA_ALLMULTI		= BIT(0),
649 	IEEE80211_SDATA_PROMISC			= BIT(1),
650 	IEEE80211_SDATA_OPERATING_GMODE		= BIT(2),
651 	IEEE80211_SDATA_DONT_BRIDGE_PACKETS	= BIT(3),
652 	IEEE80211_SDATA_DISCONNECT_RESUME	= BIT(4),
653 	IEEE80211_SDATA_IN_DRIVER		= BIT(5),
654 };
655 
656 /**
657  * enum ieee80211_sdata_state_bits - virtual interface state bits
658  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
659  *	mirrors netif_running() but is separate for interface type
660  *	change handling while the interface is up
661  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
662  *	mode, so queues are stopped
663  * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
664  *	to offchannel, reset when offchannel returns
665  */
666 enum ieee80211_sdata_state_bits {
667 	SDATA_STATE_RUNNING,
668 	SDATA_STATE_OFFCHANNEL,
669 	SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
670 };
671 
672 /**
673  * enum ieee80211_chanctx_mode - channel context configuration mode
674  *
675  * @IEEE80211_CHANCTX_SHARED: channel context may be used by
676  *	multiple interfaces
677  * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
678  *	only by a single interface. This can be used for example for
679  *	non-fixed channel IBSS.
680  */
681 enum ieee80211_chanctx_mode {
682 	IEEE80211_CHANCTX_SHARED,
683 	IEEE80211_CHANCTX_EXCLUSIVE
684 };
685 
686 struct ieee80211_chanctx {
687 	struct list_head list;
688 	struct rcu_head rcu_head;
689 
690 	enum ieee80211_chanctx_mode mode;
691 	int refcount;
692 	bool driver_present;
693 
694 	struct ieee80211_chanctx_conf conf;
695 };
696 
697 struct mac80211_qos_map {
698 	struct cfg80211_qos_map qos_map;
699 	struct rcu_head rcu_head;
700 };
701 
702 struct ieee80211_sub_if_data {
703 	struct list_head list;
704 
705 	struct wireless_dev wdev;
706 
707 	/* keys */
708 	struct list_head key_list;
709 
710 	/* count for keys needing tailroom space allocation */
711 	int crypto_tx_tailroom_needed_cnt;
712 	int crypto_tx_tailroom_pending_dec;
713 	struct delayed_work dec_tailroom_needed_wk;
714 
715 	struct net_device *dev;
716 	struct ieee80211_local *local;
717 
718 	unsigned int flags;
719 
720 	unsigned long state;
721 
722 	int drop_unencrypted;
723 
724 	char name[IFNAMSIZ];
725 
726 	/* Fragment table for host-based reassembly */
727 	struct ieee80211_fragment_entry	fragments[IEEE80211_FRAGMENT_MAX];
728 	unsigned int fragment_next;
729 
730 	/* TID bitmap for NoAck policy */
731 	u16 noack_map;
732 
733 	/* bit field of ACM bits (BIT(802.1D tag)) */
734 	u8 wmm_acm;
735 
736 	struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
737 	struct ieee80211_key __rcu *default_unicast_key;
738 	struct ieee80211_key __rcu *default_multicast_key;
739 	struct ieee80211_key __rcu *default_mgmt_key;
740 
741 	u16 sequence_number;
742 	__be16 control_port_protocol;
743 	bool control_port_no_encrypt;
744 	int encrypt_headroom;
745 
746 	struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
747 	struct mac80211_qos_map __rcu *qos_map;
748 
749 	struct work_struct csa_finalize_work;
750 	int csa_counter_offset_beacon;
751 	int csa_counter_offset_presp;
752 	bool csa_radar_required;
753 	struct cfg80211_chan_def csa_chandef;
754 
755 	/* used to reconfigure hardware SM PS */
756 	struct work_struct recalc_smps;
757 
758 	struct work_struct work;
759 	struct sk_buff_head skb_queue;
760 
761 	u8 needed_rx_chains;
762 	enum ieee80211_smps_mode smps_mode;
763 
764 	int user_power_level; /* in dBm */
765 	int ap_power_level; /* in dBm */
766 
767 	bool radar_required;
768 	struct delayed_work dfs_cac_timer_work;
769 
770 	/*
771 	 * AP this belongs to: self in AP mode and
772 	 * corresponding AP in VLAN mode, NULL for
773 	 * all others (might be needed later in IBSS)
774 	 */
775 	struct ieee80211_if_ap *bss;
776 
777 	/* bitmap of allowed (non-MCS) rate indexes for rate control */
778 	u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
779 
780 	bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
781 	u8  rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
782 
783 	union {
784 		struct ieee80211_if_ap ap;
785 		struct ieee80211_if_wds wds;
786 		struct ieee80211_if_vlan vlan;
787 		struct ieee80211_if_managed mgd;
788 		struct ieee80211_if_ibss ibss;
789 		struct ieee80211_if_mesh mesh;
790 		u32 mntr_flags;
791 	} u;
792 
793 #ifdef CONFIG_MAC80211_DEBUGFS
794 	struct {
795 		struct dentry *subdir_stations;
796 		struct dentry *default_unicast_key;
797 		struct dentry *default_multicast_key;
798 		struct dentry *default_mgmt_key;
799 	} debugfs;
800 #endif
801 
802 	/* must be last, dynamically sized area in this! */
803 	struct ieee80211_vif vif;
804 };
805 
806 static inline
807 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
808 {
809 	return container_of(p, struct ieee80211_sub_if_data, vif);
810 }
811 
812 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
813 	__acquires(&sdata->wdev.mtx)
814 {
815 	mutex_lock(&sdata->wdev.mtx);
816 	__acquire(&sdata->wdev.mtx);
817 }
818 
819 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
820 	__releases(&sdata->wdev.mtx)
821 {
822 	mutex_unlock(&sdata->wdev.mtx);
823 	__release(&sdata->wdev.mtx);
824 }
825 
826 #define sdata_dereference(p, sdata) \
827 	rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
828 
829 static inline void
830 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
831 {
832 	lockdep_assert_held(&sdata->wdev.mtx);
833 }
834 
835 static inline enum ieee80211_band
836 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
837 {
838 	enum ieee80211_band band = IEEE80211_BAND_2GHZ;
839 	struct ieee80211_chanctx_conf *chanctx_conf;
840 
841 	rcu_read_lock();
842 	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
843 	if (!WARN_ON(!chanctx_conf))
844 		band = chanctx_conf->def.chan->band;
845 	rcu_read_unlock();
846 
847 	return band;
848 }
849 
850 static inline int
851 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
852 {
853 	switch (chandef->width) {
854 	case NL80211_CHAN_WIDTH_5:
855 		return 2;
856 	case NL80211_CHAN_WIDTH_10:
857 		return 1;
858 	default:
859 		return 0;
860 	}
861 }
862 
863 static inline int
864 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
865 {
866 	struct ieee80211_chanctx_conf *chanctx_conf;
867 	int shift = 0;
868 
869 	rcu_read_lock();
870 	chanctx_conf = rcu_dereference(vif->chanctx_conf);
871 	if (chanctx_conf)
872 		shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
873 	rcu_read_unlock();
874 
875 	return shift;
876 }
877 
878 enum sdata_queue_type {
879 	IEEE80211_SDATA_QUEUE_TYPE_FRAME	= 0,
880 	IEEE80211_SDATA_QUEUE_AGG_START		= 1,
881 	IEEE80211_SDATA_QUEUE_AGG_STOP		= 2,
882 };
883 
884 enum {
885 	IEEE80211_RX_MSG	= 1,
886 	IEEE80211_TX_STATUS_MSG	= 2,
887 };
888 
889 enum queue_stop_reason {
890 	IEEE80211_QUEUE_STOP_REASON_DRIVER,
891 	IEEE80211_QUEUE_STOP_REASON_PS,
892 	IEEE80211_QUEUE_STOP_REASON_CSA,
893 	IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
894 	IEEE80211_QUEUE_STOP_REASON_SUSPEND,
895 	IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
896 	IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
897 	IEEE80211_QUEUE_STOP_REASON_FLUSH,
898 };
899 
900 #ifdef CONFIG_MAC80211_LEDS
901 struct tpt_led_trigger {
902 	struct led_trigger trig;
903 	char name[32];
904 	const struct ieee80211_tpt_blink *blink_table;
905 	unsigned int blink_table_len;
906 	struct timer_list timer;
907 	unsigned long prev_traffic;
908 	unsigned long tx_bytes, rx_bytes;
909 	unsigned int active, want;
910 	bool running;
911 };
912 #endif
913 
914 /*
915  * struct ieee80211_tx_latency_bin_ranges - Tx latency statistics bins ranges
916  *
917  * Measuring Tx latency statistics. Counts how many Tx frames transmitted in a
918  * certain latency range (in Milliseconds). Each station that uses these
919  * ranges will have bins to count the amount of frames received in that range.
920  * The user can configure the ranges via debugfs.
921  * If ranges is NULL then Tx latency statistics bins are disabled for all
922  * stations.
923  *
924  * @n_ranges: number of ranges that are taken in account
925  * @ranges: the ranges that the user requested or NULL if disabled.
926  */
927 struct ieee80211_tx_latency_bin_ranges {
928 	int n_ranges;
929 	u32 ranges[];
930 };
931 
932 /**
933  * mac80211 scan flags - currently active scan mode
934  *
935  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
936  *	well be on the operating channel
937  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
938  *	determine if we are on the operating channel or not
939  * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
940  *	channel. This should not interrupt normal traffic.
941  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
942  *	that the scan completed.
943  * @SCAN_ABORTED: Set for our scan work function when the driver reported
944  *	a scan complete for an aborted scan.
945  * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
946  *	cancelled.
947  */
948 enum {
949 	SCAN_SW_SCANNING,
950 	SCAN_HW_SCANNING,
951 	SCAN_ONCHANNEL_SCANNING,
952 	SCAN_COMPLETED,
953 	SCAN_ABORTED,
954 	SCAN_HW_CANCELLED,
955 };
956 
957 /**
958  * enum mac80211_scan_state - scan state machine states
959  *
960  * @SCAN_DECISION: Main entry point to the scan state machine, this state
961  *	determines if we should keep on scanning or switch back to the
962  *	operating channel
963  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
964  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
965  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
966  *	send out data
967  * @SCAN_RESUME: Resume the scan and scan the next channel
968  * @SCAN_ABORT: Abort the scan and go back to operating channel
969  */
970 enum mac80211_scan_state {
971 	SCAN_DECISION,
972 	SCAN_SET_CHANNEL,
973 	SCAN_SEND_PROBE,
974 	SCAN_SUSPEND,
975 	SCAN_RESUME,
976 	SCAN_ABORT,
977 };
978 
979 struct ieee80211_local {
980 	/* embed the driver visible part.
981 	 * don't cast (use the static inlines below), but we keep
982 	 * it first anyway so they become a no-op */
983 	struct ieee80211_hw hw;
984 
985 	const struct ieee80211_ops *ops;
986 
987 	/*
988 	 * private workqueue to mac80211. mac80211 makes this accessible
989 	 * via ieee80211_queue_work()
990 	 */
991 	struct workqueue_struct *workqueue;
992 
993 	unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
994 	/* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
995 	spinlock_t queue_stop_reason_lock;
996 
997 	int open_count;
998 	int monitors, cooked_mntrs;
999 	/* number of interfaces with corresponding FIF_ flags */
1000 	int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1001 	    fif_probe_req;
1002 	int probe_req_reg;
1003 	unsigned int filter_flags; /* FIF_* */
1004 
1005 	bool wiphy_ciphers_allocated;
1006 
1007 	bool use_chanctx;
1008 
1009 	/* protects the aggregated multicast list and filter calls */
1010 	spinlock_t filter_lock;
1011 
1012 	/* used for uploading changed mc list */
1013 	struct work_struct reconfig_filter;
1014 
1015 	/* aggregated multicast list */
1016 	struct netdev_hw_addr_list mc_list;
1017 
1018 	bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1019 
1020 	/*
1021 	 * suspended is true if we finished all the suspend _and_ we have
1022 	 * not yet come up from resume. This is to be used by mac80211
1023 	 * to ensure driver sanity during suspend and mac80211's own
1024 	 * sanity. It can eventually be used for WoW as well.
1025 	 */
1026 	bool suspended;
1027 
1028 	/*
1029 	 * Resuming is true while suspended, but when we're reprogramming the
1030 	 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1031 	 * again even though some other parts of the stack are still suspended
1032 	 * and we still drop received frames to avoid waking the stack.
1033 	 */
1034 	bool resuming;
1035 
1036 	/*
1037 	 * quiescing is true during the suspend process _only_ to
1038 	 * ease timer cancelling etc.
1039 	 */
1040 	bool quiescing;
1041 
1042 	/* device is started */
1043 	bool started;
1044 
1045 	/* device is during a HW reconfig */
1046 	bool in_reconfig;
1047 
1048 	/* wowlan is enabled -- don't reconfig on resume */
1049 	bool wowlan;
1050 
1051 	/* DFS/radar detection is enabled */
1052 	bool radar_detect_enabled;
1053 	struct work_struct radar_detected_work;
1054 
1055 	/* number of RX chains the hardware has */
1056 	u8 rx_chains;
1057 
1058 	int tx_headroom; /* required headroom for hardware/radiotap */
1059 
1060 	/* Tasklet and skb queue to process calls from IRQ mode. All frames
1061 	 * added to skb_queue will be processed, but frames in
1062 	 * skb_queue_unreliable may be dropped if the total length of these
1063 	 * queues increases over the limit. */
1064 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1065 	struct tasklet_struct tasklet;
1066 	struct sk_buff_head skb_queue;
1067 	struct sk_buff_head skb_queue_unreliable;
1068 
1069 	spinlock_t rx_path_lock;
1070 
1071 	/* Station data */
1072 	/*
1073 	 * The mutex only protects the list, hash table and
1074 	 * counter, reads are done with RCU.
1075 	 */
1076 	struct mutex sta_mtx;
1077 	spinlock_t tim_lock;
1078 	unsigned long num_sta;
1079 	struct list_head sta_list;
1080 	struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
1081 	struct timer_list sta_cleanup;
1082 	int sta_generation;
1083 
1084 	/*
1085 	 * Tx latency statistics parameters for all stations.
1086 	 * Can enable via debugfs (NULL when disabled).
1087 	 */
1088 	struct ieee80211_tx_latency_bin_ranges __rcu *tx_latency;
1089 
1090 	struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1091 	struct tasklet_struct tx_pending_tasklet;
1092 
1093 	atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1094 
1095 	/* number of interfaces with corresponding IFF_ flags */
1096 	atomic_t iff_allmultis, iff_promiscs;
1097 
1098 	struct rate_control_ref *rate_ctrl;
1099 
1100 	struct crypto_cipher *wep_tx_tfm;
1101 	struct crypto_cipher *wep_rx_tfm;
1102 	u32 wep_iv;
1103 
1104 	/* see iface.c */
1105 	struct list_head interfaces;
1106 	struct mutex iflist_mtx;
1107 
1108 	/*
1109 	 * Key mutex, protects sdata's key_list and sta_info's
1110 	 * key pointers (write access, they're RCU.)
1111 	 */
1112 	struct mutex key_mtx;
1113 
1114 	/* mutex for scan and work locking */
1115 	struct mutex mtx;
1116 
1117 	/* Scanning and BSS list */
1118 	unsigned long scanning;
1119 	struct cfg80211_ssid scan_ssid;
1120 	struct cfg80211_scan_request *int_scan_req;
1121 	struct cfg80211_scan_request *scan_req, *hw_scan_req;
1122 	struct cfg80211_chan_def scan_chandef;
1123 	enum ieee80211_band hw_scan_band;
1124 	int scan_channel_idx;
1125 	int scan_ies_len;
1126 	int hw_scan_ies_bufsize;
1127 
1128 	struct work_struct sched_scan_stopped_work;
1129 	struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1130 	struct cfg80211_sched_scan_request *sched_scan_req;
1131 
1132 	unsigned long leave_oper_channel_time;
1133 	enum mac80211_scan_state next_scan_state;
1134 	struct delayed_work scan_work;
1135 	struct ieee80211_sub_if_data __rcu *scan_sdata;
1136 	/* For backward compatibility only -- do not use */
1137 	struct cfg80211_chan_def _oper_chandef;
1138 
1139 	/* Temporary remain-on-channel for off-channel operations */
1140 	struct ieee80211_channel *tmp_channel;
1141 
1142 	/* channel contexts */
1143 	struct list_head chanctx_list;
1144 	struct mutex chanctx_mtx;
1145 
1146 	/* SNMP counters */
1147 	/* dot11CountersTable */
1148 	u32 dot11TransmittedFragmentCount;
1149 	u32 dot11MulticastTransmittedFrameCount;
1150 	u32 dot11FailedCount;
1151 	u32 dot11RetryCount;
1152 	u32 dot11MultipleRetryCount;
1153 	u32 dot11FrameDuplicateCount;
1154 	u32 dot11ReceivedFragmentCount;
1155 	u32 dot11MulticastReceivedFrameCount;
1156 	u32 dot11TransmittedFrameCount;
1157 
1158 #ifdef CONFIG_MAC80211_LEDS
1159 	struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1160 	struct tpt_led_trigger *tpt_led_trigger;
1161 	char tx_led_name[32], rx_led_name[32],
1162 	     assoc_led_name[32], radio_led_name[32];
1163 #endif
1164 
1165 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1166 	/* TX/RX handler statistics */
1167 	unsigned int tx_handlers_drop;
1168 	unsigned int tx_handlers_queued;
1169 	unsigned int tx_handlers_drop_unencrypted;
1170 	unsigned int tx_handlers_drop_fragment;
1171 	unsigned int tx_handlers_drop_wep;
1172 	unsigned int tx_handlers_drop_not_assoc;
1173 	unsigned int tx_handlers_drop_unauth_port;
1174 	unsigned int rx_handlers_drop;
1175 	unsigned int rx_handlers_queued;
1176 	unsigned int rx_handlers_drop_nullfunc;
1177 	unsigned int rx_handlers_drop_defrag;
1178 	unsigned int rx_handlers_drop_short;
1179 	unsigned int tx_expand_skb_head;
1180 	unsigned int tx_expand_skb_head_cloned;
1181 	unsigned int rx_expand_skb_head;
1182 	unsigned int rx_expand_skb_head2;
1183 	unsigned int rx_handlers_fragments;
1184 	unsigned int tx_status_drop;
1185 #define I802_DEBUG_INC(c) (c)++
1186 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1187 #define I802_DEBUG_INC(c) do { } while (0)
1188 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1189 
1190 
1191 	int total_ps_buffered; /* total number of all buffered unicast and
1192 				* multicast packets for power saving stations
1193 				*/
1194 
1195 	bool pspolling;
1196 	bool offchannel_ps_enabled;
1197 	/*
1198 	 * PS can only be enabled when we have exactly one managed
1199 	 * interface (and monitors) in PS, this then points there.
1200 	 */
1201 	struct ieee80211_sub_if_data *ps_sdata;
1202 	struct work_struct dynamic_ps_enable_work;
1203 	struct work_struct dynamic_ps_disable_work;
1204 	struct timer_list dynamic_ps_timer;
1205 	struct notifier_block network_latency_notifier;
1206 	struct notifier_block ifa_notifier;
1207 	struct notifier_block ifa6_notifier;
1208 
1209 	/*
1210 	 * The dynamic ps timeout configured from user space via WEXT -
1211 	 * this will override whatever chosen by mac80211 internally.
1212 	 */
1213 	int dynamic_ps_forced_timeout;
1214 
1215 	int user_power_level; /* in dBm, for all interfaces */
1216 
1217 	enum ieee80211_smps_mode smps_mode;
1218 
1219 	struct work_struct restart_work;
1220 
1221 #ifdef CONFIG_MAC80211_DEBUGFS
1222 	struct local_debugfsdentries {
1223 		struct dentry *rcdir;
1224 		struct dentry *keys;
1225 	} debugfs;
1226 #endif
1227 
1228 	/*
1229 	 * Remain-on-channel support
1230 	 */
1231 	struct list_head roc_list;
1232 	struct work_struct hw_roc_start, hw_roc_done;
1233 	unsigned long hw_roc_start_time;
1234 	u64 roc_cookie_counter;
1235 
1236 	struct idr ack_status_frames;
1237 	spinlock_t ack_status_lock;
1238 
1239 	struct ieee80211_sub_if_data __rcu *p2p_sdata;
1240 
1241 	/* virtual monitor interface */
1242 	struct ieee80211_sub_if_data __rcu *monitor_sdata;
1243 	struct cfg80211_chan_def monitor_chandef;
1244 };
1245 
1246 static inline struct ieee80211_sub_if_data *
1247 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1248 {
1249 	return netdev_priv(dev);
1250 }
1251 
1252 static inline struct ieee80211_sub_if_data *
1253 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1254 {
1255 	return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1256 }
1257 
1258 /* this struct represents 802.11n's RA/TID combination */
1259 struct ieee80211_ra_tid {
1260 	u8 ra[ETH_ALEN];
1261 	u16 tid;
1262 };
1263 
1264 /* this struct holds the value parsing from channel switch IE  */
1265 struct ieee80211_csa_ie {
1266 	struct cfg80211_chan_def chandef;
1267 	u8 mode;
1268 	u8 count;
1269 	u8 ttl;
1270 	u16 pre_value;
1271 };
1272 
1273 /* Parsed Information Elements */
1274 struct ieee802_11_elems {
1275 	const u8 *ie_start;
1276 	size_t total_len;
1277 
1278 	/* pointers to IEs */
1279 	const u8 *ssid;
1280 	const u8 *supp_rates;
1281 	const u8 *ds_params;
1282 	const struct ieee80211_tim_ie *tim;
1283 	const u8 *challenge;
1284 	const u8 *rsn;
1285 	const u8 *erp_info;
1286 	const u8 *ext_supp_rates;
1287 	const u8 *wmm_info;
1288 	const u8 *wmm_param;
1289 	const struct ieee80211_ht_cap *ht_cap_elem;
1290 	const struct ieee80211_ht_operation *ht_operation;
1291 	const struct ieee80211_vht_cap *vht_cap_elem;
1292 	const struct ieee80211_vht_operation *vht_operation;
1293 	const struct ieee80211_meshconf_ie *mesh_config;
1294 	const u8 *mesh_id;
1295 	const u8 *peering;
1296 	const __le16 *awake_window;
1297 	const u8 *preq;
1298 	const u8 *prep;
1299 	const u8 *perr;
1300 	const struct ieee80211_rann_ie *rann;
1301 	const struct ieee80211_channel_sw_ie *ch_switch_ie;
1302 	const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1303 	const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1304 	const u8 *country_elem;
1305 	const u8 *pwr_constr_elem;
1306 	const struct ieee80211_timeout_interval_ie *timeout_int;
1307 	const u8 *opmode_notif;
1308 	const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1309 	const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1310 
1311 	/* length of them, respectively */
1312 	u8 ssid_len;
1313 	u8 supp_rates_len;
1314 	u8 tim_len;
1315 	u8 challenge_len;
1316 	u8 rsn_len;
1317 	u8 ext_supp_rates_len;
1318 	u8 wmm_info_len;
1319 	u8 wmm_param_len;
1320 	u8 mesh_id_len;
1321 	u8 peering_len;
1322 	u8 preq_len;
1323 	u8 prep_len;
1324 	u8 perr_len;
1325 	u8 country_elem_len;
1326 
1327 	/* whether a parse error occurred while retrieving these elements */
1328 	bool parse_error;
1329 };
1330 
1331 static inline struct ieee80211_local *hw_to_local(
1332 	struct ieee80211_hw *hw)
1333 {
1334 	return container_of(hw, struct ieee80211_local, hw);
1335 }
1336 
1337 
1338 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1339 {
1340 	return ether_addr_equal(raddr, addr) ||
1341 	       is_broadcast_ether_addr(raddr);
1342 }
1343 
1344 static inline bool
1345 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1346 {
1347 	WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1348 		     status->flag & RX_FLAG_MACTIME_END);
1349 	return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1350 }
1351 
1352 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1353 				     struct ieee80211_rx_status *status,
1354 				     unsigned int mpdu_len,
1355 				     unsigned int mpdu_offset);
1356 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1357 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1358 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1359 				      u32 changed);
1360 void ieee80211_configure_filter(struct ieee80211_local *local);
1361 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1362 
1363 /* STA code */
1364 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1365 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1366 		       struct cfg80211_auth_request *req);
1367 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1368 			struct cfg80211_assoc_request *req);
1369 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1370 			 struct cfg80211_deauth_request *req);
1371 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1372 			   struct cfg80211_disassoc_request *req);
1373 void ieee80211_send_pspoll(struct ieee80211_local *local,
1374 			   struct ieee80211_sub_if_data *sdata);
1375 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1376 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1377 int ieee80211_max_network_latency(struct notifier_block *nb,
1378 				  unsigned long data, void *dummy);
1379 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1380 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1381 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1382 				  struct sk_buff *skb);
1383 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1384 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1385 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1386 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1387 				  __le16 fc, bool acked);
1388 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1389 
1390 /* IBSS code */
1391 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1392 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1393 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1394 			      const u8 *bssid, const u8 *addr, u32 supp_rates);
1395 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1396 			struct cfg80211_ibss_params *params);
1397 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1398 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1399 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1400 				   struct sk_buff *skb);
1401 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1402 			      struct cfg80211_csa_settings *csa_settings);
1403 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1404 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1405 
1406 /* mesh code */
1407 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1408 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1409 				   struct sk_buff *skb);
1410 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1411 			      struct cfg80211_csa_settings *csa_settings,
1412 			      bool csa_action);
1413 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1414 
1415 /* scan/BSS handling */
1416 void ieee80211_scan_work(struct work_struct *work);
1417 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1418 				const u8 *ssid, u8 ssid_len,
1419 				struct ieee80211_channel *chan,
1420 				enum nl80211_bss_scan_width scan_width);
1421 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1422 			   struct cfg80211_scan_request *req);
1423 void ieee80211_scan_cancel(struct ieee80211_local *local);
1424 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1425 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1426 
1427 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1428 struct ieee80211_bss *
1429 ieee80211_bss_info_update(struct ieee80211_local *local,
1430 			  struct ieee80211_rx_status *rx_status,
1431 			  struct ieee80211_mgmt *mgmt,
1432 			  size_t len,
1433 			  struct ieee802_11_elems *elems,
1434 			  struct ieee80211_channel *channel);
1435 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1436 			  struct ieee80211_bss *bss);
1437 
1438 /* scheduled scan handling */
1439 int
1440 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1441 				     struct cfg80211_sched_scan_request *req);
1442 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1443 				       struct cfg80211_sched_scan_request *req);
1444 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1445 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1446 
1447 /* off-channel helpers */
1448 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1449 void ieee80211_offchannel_return(struct ieee80211_local *local);
1450 void ieee80211_roc_setup(struct ieee80211_local *local);
1451 void ieee80211_start_next_roc(struct ieee80211_local *local);
1452 void ieee80211_roc_purge(struct ieee80211_local *local,
1453 			 struct ieee80211_sub_if_data *sdata);
1454 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1455 void ieee80211_sw_roc_work(struct work_struct *work);
1456 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1457 
1458 /* channel switch handling */
1459 void ieee80211_csa_finalize_work(struct work_struct *work);
1460 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1461 			     struct cfg80211_csa_settings *params);
1462 
1463 /* interface handling */
1464 int ieee80211_iface_init(void);
1465 void ieee80211_iface_exit(void);
1466 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1467 		     struct wireless_dev **new_wdev, enum nl80211_iftype type,
1468 		     struct vif_params *params);
1469 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1470 			     enum nl80211_iftype type);
1471 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1472 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1473 u32 ieee80211_idle_off(struct ieee80211_local *local);
1474 void ieee80211_recalc_idle(struct ieee80211_local *local);
1475 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1476 				    const int offset);
1477 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1478 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1479 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1480 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1481 
1482 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1483 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1484 
1485 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1486 {
1487 	return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1488 }
1489 
1490 /* tx handling */
1491 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1492 void ieee80211_tx_pending(unsigned long data);
1493 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1494 					 struct net_device *dev);
1495 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1496 				       struct net_device *dev);
1497 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1498 			      struct sk_buff_head *skbs);
1499 
1500 /* HT */
1501 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1502 				     struct ieee80211_sta_ht_cap *ht_cap);
1503 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1504 				       struct ieee80211_supported_band *sband,
1505 				       const struct ieee80211_ht_cap *ht_cap_ie,
1506 				       struct sta_info *sta);
1507 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1508 			  const u8 *da, u16 tid,
1509 			  u16 initiator, u16 reason_code);
1510 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1511 			       enum ieee80211_smps_mode smps, const u8 *da,
1512 			       const u8 *bssid);
1513 void ieee80211_request_smps_ap_work(struct work_struct *work);
1514 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1515 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1516 				   enum ieee80211_smps_mode smps_mode_new);
1517 
1518 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1519 				     u16 initiator, u16 reason, bool stop);
1520 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1521 				    u16 initiator, u16 reason, bool stop);
1522 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1523 					 enum ieee80211_agg_stop_reason reason);
1524 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1525 			     struct sta_info *sta,
1526 			     struct ieee80211_mgmt *mgmt, size_t len);
1527 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1528 				  struct sta_info *sta,
1529 				  struct ieee80211_mgmt *mgmt,
1530 				  size_t len);
1531 void ieee80211_process_addba_request(struct ieee80211_local *local,
1532 				     struct sta_info *sta,
1533 				     struct ieee80211_mgmt *mgmt,
1534 				     size_t len);
1535 
1536 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1537 				   enum ieee80211_agg_stop_reason reason);
1538 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1539 				    enum ieee80211_agg_stop_reason reason);
1540 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1541 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1542 void ieee80211_ba_session_work(struct work_struct *work);
1543 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1544 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1545 
1546 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1547 
1548 /* VHT */
1549 void
1550 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1551 				    struct ieee80211_supported_band *sband,
1552 				    const struct ieee80211_vht_cap *vht_cap_ie,
1553 				    struct sta_info *sta);
1554 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1555 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1556 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1557 				 struct sta_info *sta, u8 opmode,
1558 				 enum ieee80211_band band, bool nss_only);
1559 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1560 				      struct ieee80211_sta_vht_cap *vht_cap);
1561 
1562 /* Spectrum management */
1563 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1564 				       struct ieee80211_mgmt *mgmt,
1565 				       size_t len);
1566 /**
1567  * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1568  * @sdata: the sdata of the interface which has received the frame
1569  * @elems: parsed 802.11 elements received with the frame
1570  * @beacon: indicates if the frame was a beacon or probe response
1571  * @current_band: indicates the current band
1572  * @sta_flags: contains information about own capabilities and restrictions
1573  *	to decide which channel switch announcements can be accepted. Only the
1574  *	following subset of &enum ieee80211_sta_flags are evaluated:
1575  *	%IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1576  *	%IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1577  *	%IEEE80211_STA_DISABLE_160MHZ.
1578  * @bssid: the currently connected bssid (for reporting)
1579  * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1580 	All of them will be filled with if success only.
1581  * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1582  */
1583 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1584 				 struct ieee802_11_elems *elems, bool beacon,
1585 				 enum ieee80211_band current_band,
1586 				 u32 sta_flags, u8 *bssid,
1587 				 struct ieee80211_csa_ie *csa_ie);
1588 
1589 /* Suspend/resume and hw reconfiguration */
1590 int ieee80211_reconfig(struct ieee80211_local *local);
1591 void ieee80211_stop_device(struct ieee80211_local *local);
1592 
1593 int __ieee80211_suspend(struct ieee80211_hw *hw,
1594 			struct cfg80211_wowlan *wowlan);
1595 
1596 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1597 {
1598 	struct ieee80211_local *local = hw_to_local(hw);
1599 
1600 	WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1601 		"%s: resume with hardware scan still in progress\n",
1602 		wiphy_name(hw->wiphy));
1603 
1604 	return ieee80211_reconfig(hw_to_local(hw));
1605 }
1606 
1607 /* utility functions/constants */
1608 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1609 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1610 			enum nl80211_iftype type);
1611 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1612 			     int rate, int erp, int short_preamble,
1613 			     int shift);
1614 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1615 				     struct ieee80211_hdr *hdr, const u8 *tsc,
1616 				     gfp_t gfp);
1617 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1618 			       bool bss_notify);
1619 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1620 		    enum ieee80211_band band);
1621 
1622 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1623 				 struct sk_buff *skb, int tid,
1624 				 enum ieee80211_band band);
1625 
1626 static inline void
1627 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1628 			  struct sk_buff *skb, int tid,
1629 			  enum ieee80211_band band)
1630 {
1631 	rcu_read_lock();
1632 	__ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1633 	rcu_read_unlock();
1634 }
1635 
1636 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1637 					struct sk_buff *skb, int tid)
1638 {
1639 	struct ieee80211_chanctx_conf *chanctx_conf;
1640 
1641 	rcu_read_lock();
1642 	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1643 	if (WARN_ON(!chanctx_conf)) {
1644 		rcu_read_unlock();
1645 		kfree_skb(skb);
1646 		return;
1647 	}
1648 
1649 	__ieee80211_tx_skb_tid_band(sdata, skb, tid,
1650 				    chanctx_conf->def.chan->band);
1651 	rcu_read_unlock();
1652 }
1653 
1654 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1655 				    struct sk_buff *skb)
1656 {
1657 	/* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1658 	ieee80211_tx_skb_tid(sdata, skb, 7);
1659 }
1660 
1661 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1662 			       struct ieee802_11_elems *elems,
1663 			       u64 filter, u32 crc);
1664 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1665 					  bool action,
1666 					  struct ieee802_11_elems *elems)
1667 {
1668 	ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1669 }
1670 
1671 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1672 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1673 void ieee80211_dynamic_ps_timer(unsigned long data);
1674 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1675 			     struct ieee80211_sub_if_data *sdata,
1676 			     int powersave);
1677 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1678 			     struct ieee80211_hdr *hdr);
1679 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1680 			     struct ieee80211_hdr *hdr, bool ack);
1681 
1682 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1683 				     unsigned long queues,
1684 				     enum queue_stop_reason reason);
1685 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1686 				     unsigned long queues,
1687 				     enum queue_stop_reason reason);
1688 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1689 				    enum queue_stop_reason reason);
1690 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1691 				    enum queue_stop_reason reason);
1692 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1693 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1694 			       struct sk_buff *skb);
1695 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1696 				   struct sk_buff_head *skbs,
1697 				   void (*fn)(void *data), void *data);
1698 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1699 					      struct sk_buff_head *skbs)
1700 {
1701 	ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL);
1702 }
1703 void ieee80211_flush_queues(struct ieee80211_local *local,
1704 			    struct ieee80211_sub_if_data *sdata);
1705 
1706 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1707 			 u16 transaction, u16 auth_alg, u16 status,
1708 			 const u8 *extra, size_t extra_len, const u8 *bssid,
1709 			 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1710 			 u32 tx_flags);
1711 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1712 				    const u8 *bssid, u16 stype, u16 reason,
1713 				    bool send_frame, u8 *frame_buf);
1714 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1715 			     size_t buffer_len, const u8 *ie, size_t ie_len,
1716 			     enum ieee80211_band band, u32 rate_mask,
1717 			     struct cfg80211_chan_def *chandef);
1718 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1719 					  u8 *dst, u32 ratemask,
1720 					  struct ieee80211_channel *chan,
1721 					  const u8 *ssid, size_t ssid_len,
1722 					  const u8 *ie, size_t ie_len,
1723 					  bool directed);
1724 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1725 			      const u8 *ssid, size_t ssid_len,
1726 			      const u8 *ie, size_t ie_len,
1727 			      u32 ratemask, bool directed, u32 tx_flags,
1728 			      struct ieee80211_channel *channel, bool scan);
1729 
1730 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1731 			    struct ieee802_11_elems *elems,
1732 			    enum ieee80211_band band, u32 *basic_rates);
1733 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1734 				 enum ieee80211_smps_mode smps_mode);
1735 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1736 				enum ieee80211_smps_mode smps_mode);
1737 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1738 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
1739 
1740 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1741 			  const u8 *ids, int n_ids, size_t offset);
1742 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1743 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1744 			      u16 cap);
1745 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1746 			       const struct cfg80211_chan_def *chandef,
1747 			       u16 prot_mode);
1748 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1749 			       u32 cap);
1750 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1751 			     const struct ieee80211_supported_band *sband,
1752 			     const u8 *srates, int srates_len, u32 *rates);
1753 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1754 			    struct sk_buff *skb, bool need_basic,
1755 			    enum ieee80211_band band);
1756 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1757 				struct sk_buff *skb, bool need_basic,
1758 				enum ieee80211_band band);
1759 
1760 /* channel management */
1761 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1762 				  const struct ieee80211_ht_operation *ht_oper,
1763 				  struct cfg80211_chan_def *chandef);
1764 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
1765 
1766 int __must_check
1767 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1768 			  const struct cfg80211_chan_def *chandef,
1769 			  enum ieee80211_chanctx_mode mode);
1770 int __must_check
1771 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
1772 			       const struct cfg80211_chan_def *chandef,
1773 			       u32 *changed);
1774 /* NOTE: only use ieee80211_vif_change_channel() for channel switch */
1775 int __must_check
1776 ieee80211_vif_change_channel(struct ieee80211_sub_if_data *sdata,
1777 			     u32 *changed);
1778 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
1779 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
1780 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
1781 					 bool clear);
1782 
1783 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
1784 				   struct ieee80211_chanctx *chanctx);
1785 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
1786 				      struct ieee80211_chanctx *ctx);
1787 
1788 void ieee80211_dfs_cac_timer(unsigned long data);
1789 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
1790 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
1791 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
1792 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
1793 			      struct cfg80211_csa_settings *csa_settings);
1794 
1795 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
1796 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
1797 const struct ieee80211_cipher_scheme *
1798 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
1799 		 enum nl80211_iftype iftype);
1800 int ieee80211_cs_headroom(struct ieee80211_local *local,
1801 			  struct cfg80211_crypto_settings *crypto,
1802 			  enum nl80211_iftype iftype);
1803 void ieee80211_recalc_dtim(struct ieee80211_local *local,
1804 			   struct ieee80211_sub_if_data *sdata);
1805 
1806 #ifdef CONFIG_MAC80211_NOINLINE
1807 #define debug_noinline noinline
1808 #else
1809 #define debug_noinline
1810 #endif
1811 
1812 #endif /* IEEE80211_I_H */
1813