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TOMOYO Linux Cross Reference
Linux/net/mac80211/ieee80211_i.h

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  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  * Copyright 2013-2015  Intel Mobile Communications GmbH
  7  * Copyright (C) 2018-2019 Intel Corporation
  8  *
  9  * This program is free software; you can redistribute it and/or modify
 10  * it under the terms of the GNU General Public License version 2 as
 11  * published by the Free Software Foundation.
 12  */
 13 
 14 #ifndef IEEE80211_I_H
 15 #define IEEE80211_I_H
 16 
 17 #include <linux/kernel.h>
 18 #include <linux/device.h>
 19 #include <linux/if_ether.h>
 20 #include <linux/interrupt.h>
 21 #include <linux/list.h>
 22 #include <linux/netdevice.h>
 23 #include <linux/skbuff.h>
 24 #include <linux/workqueue.h>
 25 #include <linux/types.h>
 26 #include <linux/spinlock.h>
 27 #include <linux/etherdevice.h>
 28 #include <linux/leds.h>
 29 #include <linux/idr.h>
 30 #include <linux/rhashtable.h>
 31 #include <net/ieee80211_radiotap.h>
 32 #include <net/cfg80211.h>
 33 #include <net/mac80211.h>
 34 #include <net/fq.h>
 35 #include "key.h"
 36 #include "sta_info.h"
 37 #include "debug.h"
 38 
 39 extern const struct cfg80211_ops mac80211_config_ops;
 40 
 41 struct ieee80211_local;
 42 
 43 /* Maximum number of broadcast/multicast frames to buffer when some of the
 44  * associated stations are using power saving. */
 45 #define AP_MAX_BC_BUFFER 128
 46 
 47 /* Maximum number of frames buffered to all STAs, including multicast frames.
 48  * Note: increasing this limit increases the potential memory requirement. Each
 49  * frame can be up to about 2 kB long. */
 50 #define TOTAL_MAX_TX_BUFFER 512
 51 
 52 /* Required encryption head and tailroom */
 53 #define IEEE80211_ENCRYPT_HEADROOM 8
 54 #define IEEE80211_ENCRYPT_TAILROOM 18
 55 
 56 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
 57  * reception of at least three fragmented frames. This limit can be increased
 58  * by changing this define, at the cost of slower frame reassembly and
 59  * increased memory use (about 2 kB of RAM per entry). */
 60 #define IEEE80211_FRAGMENT_MAX 4
 61 
 62 /* power level hasn't been configured (or set to automatic) */
 63 #define IEEE80211_UNSET_POWER_LEVEL     INT_MIN
 64 
 65 /*
 66  * Some APs experience problems when working with U-APSD. Decreasing the
 67  * probability of that happening by using legacy mode for all ACs but VO isn't
 68  * enough.
 69  *
 70  * Cisco 4410N originally forced us to enable VO by default only because it
 71  * treated non-VO ACs as legacy.
 72  *
 73  * However some APs (notably Netgear R7000) silently reclassify packets to
 74  * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
 75  * clients would never see some frames (e.g. ARP responses) or would fetch them
 76  * accidentally after a long time.
 77  *
 78  * It makes little sense to enable u-APSD queues by default because it needs
 79  * userspace applications to be aware of it to actually take advantage of the
 80  * possible additional powersavings. Implicitly depending on driver autotrigger
 81  * frame support doesn't make much sense.
 82  */
 83 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
 84 
 85 #define IEEE80211_DEFAULT_MAX_SP_LEN            \
 86         IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
 87 
 88 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS];
 89 
 90 #define IEEE80211_DEAUTH_FRAME_LEN      (24 /* hdr */ + 2 /* reason */)
 91 
 92 #define IEEE80211_MAX_NAN_INSTANCE_ID 255
 93 
 94 struct ieee80211_fragment_entry {
 95         struct sk_buff_head skb_list;
 96         unsigned long first_frag_time;
 97         u16 seq;
 98         u16 extra_len;
 99         u16 last_frag;
100         u8 rx_queue;
101         bool check_sequential_pn; /* needed for CCMP/GCMP */
102         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
103 };
104 
105 
106 struct ieee80211_bss {
107         u32 device_ts_beacon, device_ts_presp;
108 
109         bool wmm_used;
110         bool uapsd_supported;
111 
112 #define IEEE80211_MAX_SUPP_RATES 32
113         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
114         size_t supp_rates_len;
115         struct ieee80211_rate *beacon_rate;
116 
117         /*
118          * During association, we save an ERP value from a probe response so
119          * that we can feed ERP info to the driver when handling the
120          * association completes. these fields probably won't be up-to-date
121          * otherwise, you probably don't want to use them.
122          */
123         bool has_erp_value;
124         u8 erp_value;
125 
126         /* Keep track of the corruption of the last beacon/probe response. */
127         u8 corrupt_data;
128 
129         /* Keep track of what bits of information we have valid info for. */
130         u8 valid_data;
131 };
132 
133 /**
134  * enum ieee80211_corrupt_data_flags - BSS data corruption flags
135  * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
136  * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
137  *
138  * These are bss flags that are attached to a bss in the
139  * @corrupt_data field of &struct ieee80211_bss.
140  */
141 enum ieee80211_bss_corrupt_data_flags {
142         IEEE80211_BSS_CORRUPT_BEACON            = BIT(0),
143         IEEE80211_BSS_CORRUPT_PROBE_RESP        = BIT(1)
144 };
145 
146 /**
147  * enum ieee80211_valid_data_flags - BSS valid data flags
148  * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
149  * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
150  * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
151  *
152  * These are bss flags that are attached to a bss in the
153  * @valid_data field of &struct ieee80211_bss.  They show which parts
154  * of the data structure were received as a result of an un-corrupted
155  * beacon/probe response.
156  */
157 enum ieee80211_bss_valid_data_flags {
158         IEEE80211_BSS_VALID_WMM                 = BIT(1),
159         IEEE80211_BSS_VALID_RATES               = BIT(2),
160         IEEE80211_BSS_VALID_ERP                 = BIT(3)
161 };
162 
163 typedef unsigned __bitwise ieee80211_tx_result;
164 #define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
165 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
166 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
167 
168 #define IEEE80211_TX_NO_SEQNO           BIT(0)
169 #define IEEE80211_TX_UNICAST            BIT(1)
170 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
171 
172 struct ieee80211_tx_data {
173         struct sk_buff *skb;
174         struct sk_buff_head skbs;
175         struct ieee80211_local *local;
176         struct ieee80211_sub_if_data *sdata;
177         struct sta_info *sta;
178         struct ieee80211_key *key;
179         struct ieee80211_tx_rate rate;
180 
181         unsigned int flags;
182 };
183 
184 
185 typedef unsigned __bitwise ieee80211_rx_result;
186 #define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
187 #define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
188 #define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
189 #define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
190 
191 /**
192  * enum ieee80211_packet_rx_flags - packet RX flags
193  * @IEEE80211_RX_AMSDU: a-MSDU packet
194  * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
195  * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
196  *
197  * These are per-frame flags that are attached to a frame in the
198  * @rx_flags field of &struct ieee80211_rx_status.
199  */
200 enum ieee80211_packet_rx_flags {
201         IEEE80211_RX_AMSDU                      = BIT(3),
202         IEEE80211_RX_MALFORMED_ACTION_FRM       = BIT(4),
203         IEEE80211_RX_DEFERRED_RELEASE           = BIT(5),
204 };
205 
206 /**
207  * enum ieee80211_rx_flags - RX data flags
208  *
209  * @IEEE80211_RX_CMNTR: received on cooked monitor already
210  * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
211  *      to cfg80211_report_obss_beacon().
212  *
213  * These flags are used across handling multiple interfaces
214  * for a single frame.
215  */
216 enum ieee80211_rx_flags {
217         IEEE80211_RX_CMNTR              = BIT(0),
218         IEEE80211_RX_BEACON_REPORTED    = BIT(1),
219 };
220 
221 struct ieee80211_rx_data {
222         struct napi_struct *napi;
223         struct sk_buff *skb;
224         struct ieee80211_local *local;
225         struct ieee80211_sub_if_data *sdata;
226         struct sta_info *sta;
227         struct ieee80211_key *key;
228 
229         unsigned int flags;
230 
231         /*
232          * Index into sequence numbers array, 0..16
233          * since the last (16) is used for non-QoS,
234          * will be 16 on non-QoS frames.
235          */
236         int seqno_idx;
237 
238         /*
239          * Index into the security IV/PN arrays, 0..16
240          * since the last (16) is used for CCMP-encrypted
241          * management frames, will be set to 16 on mgmt
242          * frames and 0 on non-QoS frames.
243          */
244         int security_idx;
245 
246         u32 tkip_iv32;
247         u16 tkip_iv16;
248 };
249 
250 struct ieee80211_csa_settings {
251         const u16 *counter_offsets_beacon;
252         const u16 *counter_offsets_presp;
253 
254         int n_counter_offsets_beacon;
255         int n_counter_offsets_presp;
256 
257         u8 count;
258 };
259 
260 struct beacon_data {
261         u8 *head, *tail;
262         int head_len, tail_len;
263         struct ieee80211_meshconf_ie *meshconf;
264         u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
265         u8 csa_current_counter;
266         struct rcu_head rcu_head;
267 };
268 
269 struct probe_resp {
270         struct rcu_head rcu_head;
271         int len;
272         u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
273         u8 data[0];
274 };
275 
276 struct ps_data {
277         /* yes, this looks ugly, but guarantees that we can later use
278          * bitmap_empty :)
279          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
280         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
281                         __aligned(__alignof__(unsigned long));
282         struct sk_buff_head bc_buf;
283         atomic_t num_sta_ps; /* number of stations in PS mode */
284         int dtim_count;
285         bool dtim_bc_mc;
286 };
287 
288 struct ieee80211_if_ap {
289         struct beacon_data __rcu *beacon;
290         struct probe_resp __rcu *probe_resp;
291 
292         /* to be used after channel switch. */
293         struct cfg80211_beacon_data *next_beacon;
294         struct list_head vlans; /* write-protected with RTNL and local->mtx */
295 
296         struct ps_data ps;
297         atomic_t num_mcast_sta; /* number of stations receiving multicast */
298         enum ieee80211_smps_mode req_smps, /* requested smps mode */
299                          driver_smps_mode; /* smps mode request */
300 
301         struct work_struct request_smps_work;
302         bool multicast_to_unicast;
303 };
304 
305 struct ieee80211_if_wds {
306         struct sta_info *sta;
307         u8 remote_addr[ETH_ALEN];
308 };
309 
310 struct ieee80211_if_vlan {
311         struct list_head list; /* write-protected with RTNL and local->mtx */
312 
313         /* used for all tx if the VLAN is configured to 4-addr mode */
314         struct sta_info __rcu *sta;
315         atomic_t num_mcast_sta; /* number of stations receiving multicast */
316 };
317 
318 struct mesh_stats {
319         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
320         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
321         __u32 fwded_frames;             /* Mesh total forwarded frames */
322         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
323         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
324         __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
325 };
326 
327 #define PREQ_Q_F_START          0x1
328 #define PREQ_Q_F_REFRESH        0x2
329 struct mesh_preq_queue {
330         struct list_head list;
331         u8 dst[ETH_ALEN];
332         u8 flags;
333 };
334 
335 struct ieee80211_roc_work {
336         struct list_head list;
337 
338         struct ieee80211_sub_if_data *sdata;
339 
340         struct ieee80211_channel *chan;
341 
342         bool started, abort, hw_begun, notified;
343         bool on_channel;
344 
345         unsigned long start_time;
346 
347         u32 duration, req_duration;
348         struct sk_buff *frame;
349         u64 cookie, mgmt_tx_cookie;
350         enum ieee80211_roc_type type;
351 };
352 
353 /* flags used in struct ieee80211_if_managed.flags */
354 enum ieee80211_sta_flags {
355         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
356         IEEE80211_STA_CONTROL_PORT      = BIT(2),
357         IEEE80211_STA_DISABLE_HT        = BIT(4),
358         IEEE80211_STA_MFP_ENABLED       = BIT(6),
359         IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
360         IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
361         IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
362         IEEE80211_STA_DISABLE_40MHZ     = BIT(10),
363         IEEE80211_STA_DISABLE_VHT       = BIT(11),
364         IEEE80211_STA_DISABLE_80P80MHZ  = BIT(12),
365         IEEE80211_STA_DISABLE_160MHZ    = BIT(13),
366         IEEE80211_STA_DISABLE_WMM       = BIT(14),
367         IEEE80211_STA_ENABLE_RRM        = BIT(15),
368         IEEE80211_STA_DISABLE_HE        = BIT(16),
369 };
370 
371 struct ieee80211_mgd_auth_data {
372         struct cfg80211_bss *bss;
373         unsigned long timeout;
374         int tries;
375         u16 algorithm, expected_transaction;
376 
377         u8 key[WLAN_KEY_LEN_WEP104];
378         u8 key_len, key_idx;
379         bool done;
380         bool peer_confirmed;
381         bool timeout_started;
382 
383         u16 sae_trans, sae_status;
384         size_t data_len;
385         u8 data[];
386 };
387 
388 struct ieee80211_mgd_assoc_data {
389         struct cfg80211_bss *bss;
390         const u8 *supp_rates;
391 
392         unsigned long timeout;
393         int tries;
394 
395         u16 capability;
396         u8 prev_bssid[ETH_ALEN];
397         u8 ssid[IEEE80211_MAX_SSID_LEN];
398         u8 ssid_len;
399         u8 supp_rates_len;
400         bool wmm, uapsd;
401         bool need_beacon;
402         bool synced;
403         bool timeout_started;
404 
405         u8 ap_ht_param;
406 
407         struct ieee80211_vht_cap ap_vht_cap;
408 
409         u8 fils_nonces[2 * FILS_NONCE_LEN];
410         u8 fils_kek[FILS_MAX_KEK_LEN];
411         size_t fils_kek_len;
412 
413         size_t ie_len;
414         u8 ie[];
415 };
416 
417 struct ieee80211_sta_tx_tspec {
418         /* timestamp of the first packet in the time slice */
419         unsigned long time_slice_start;
420 
421         u32 admitted_time; /* in usecs, unlike over the air */
422         u8 tsid;
423         s8 up; /* signed to be able to invalidate with -1 during teardown */
424 
425         /* consumed TX time in microseconds in the time slice */
426         u32 consumed_tx_time;
427         enum {
428                 TX_TSPEC_ACTION_NONE = 0,
429                 TX_TSPEC_ACTION_DOWNGRADE,
430                 TX_TSPEC_ACTION_STOP_DOWNGRADE,
431         } action;
432         bool downgraded;
433 };
434 
435 DECLARE_EWMA(beacon_signal, 4, 4)
436 
437 struct ieee80211_if_managed {
438         struct timer_list timer;
439         struct timer_list conn_mon_timer;
440         struct timer_list bcn_mon_timer;
441         struct timer_list chswitch_timer;
442         struct work_struct monitor_work;
443         struct work_struct chswitch_work;
444         struct work_struct beacon_connection_loss_work;
445         struct work_struct csa_connection_drop_work;
446 
447         unsigned long beacon_timeout;
448         unsigned long probe_timeout;
449         int probe_send_count;
450         bool nullfunc_failed;
451         bool connection_loss;
452 
453         struct cfg80211_bss *associated;
454         struct ieee80211_mgd_auth_data *auth_data;
455         struct ieee80211_mgd_assoc_data *assoc_data;
456 
457         u8 bssid[ETH_ALEN] __aligned(2);
458 
459         u16 aid;
460 
461         bool powersave; /* powersave requested for this iface */
462         bool broken_ap; /* AP is broken -- turn off powersave */
463         bool have_beacon;
464         u8 dtim_period;
465         enum ieee80211_smps_mode req_smps, /* requested smps mode */
466                                  driver_smps_mode; /* smps mode request */
467 
468         struct work_struct request_smps_work;
469 
470         unsigned int flags;
471 
472         bool csa_waiting_bcn;
473         bool csa_ignored_same_chan;
474 
475         bool beacon_crc_valid;
476         u32 beacon_crc;
477 
478         bool status_acked;
479         bool status_received;
480         __le16 status_fc;
481 
482         enum {
483                 IEEE80211_MFP_DISABLED,
484                 IEEE80211_MFP_OPTIONAL,
485                 IEEE80211_MFP_REQUIRED
486         } mfp; /* management frame protection */
487 
488         /*
489          * Bitmask of enabled u-apsd queues,
490          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
491          * to take effect.
492          */
493         unsigned int uapsd_queues;
494 
495         /*
496          * Maximum number of buffered frames AP can deliver during a
497          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
498          * Needs a new association to take effect.
499          */
500         unsigned int uapsd_max_sp_len;
501 
502         int wmm_last_param_set;
503         int mu_edca_last_param_set;
504 
505         u8 use_4addr;
506 
507         s16 p2p_noa_index;
508 
509         struct ewma_beacon_signal ave_beacon_signal;
510 
511         /*
512          * Number of Beacon frames used in ave_beacon_signal. This can be used
513          * to avoid generating less reliable cqm events that would be based
514          * only on couple of received frames.
515          */
516         unsigned int count_beacon_signal;
517 
518         /* Number of times beacon loss was invoked. */
519         unsigned int beacon_loss_count;
520 
521         /*
522          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
523          * that triggered a cqm event. 0 indicates that no event has been
524          * generated for the current association.
525          */
526         int last_cqm_event_signal;
527 
528         /*
529          * State variables for keeping track of RSSI of the AP currently
530          * connected to and informing driver when RSSI has gone
531          * below/above a certain threshold.
532          */
533         int rssi_min_thold, rssi_max_thold;
534         int last_ave_beacon_signal;
535 
536         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
537         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
538         struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
539         struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
540 
541         /* TDLS support */
542         u8 tdls_peer[ETH_ALEN] __aligned(2);
543         struct delayed_work tdls_peer_del_work;
544         struct sk_buff *orig_teardown_skb; /* The original teardown skb */
545         struct sk_buff *teardown_skb; /* A copy to send through the AP */
546         spinlock_t teardown_lock; /* To lock changing teardown_skb */
547         bool tdls_chan_switch_prohibited;
548         bool tdls_wider_bw_prohibited;
549 
550         /* WMM-AC TSPEC support */
551         struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
552         /* Use a separate work struct so that we can do something here
553          * while the sdata->work is flushing the queues, for example.
554          * otherwise, in scenarios where we hardly get any traffic out
555          * on the BE queue, but there's a lot of VO traffic, we might
556          * get stuck in a downgraded situation and flush takes forever.
557          */
558         struct delayed_work tx_tspec_wk;
559 
560         /* Information elements from the last transmitted (Re)Association
561          * Request frame.
562          */
563         u8 *assoc_req_ies;
564         size_t assoc_req_ies_len;
565 };
566 
567 struct ieee80211_if_ibss {
568         struct timer_list timer;
569         struct work_struct csa_connection_drop_work;
570 
571         unsigned long last_scan_completed;
572 
573         u32 basic_rates;
574 
575         bool fixed_bssid;
576         bool fixed_channel;
577         bool privacy;
578 
579         bool control_port;
580         bool userspace_handles_dfs;
581 
582         u8 bssid[ETH_ALEN] __aligned(2);
583         u8 ssid[IEEE80211_MAX_SSID_LEN];
584         u8 ssid_len, ie_len;
585         u8 *ie;
586         struct cfg80211_chan_def chandef;
587 
588         unsigned long ibss_join_req;
589         /* probe response/beacon for IBSS */
590         struct beacon_data __rcu *presp;
591 
592         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
593         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
594 
595         spinlock_t incomplete_lock;
596         struct list_head incomplete_stations;
597 
598         enum {
599                 IEEE80211_IBSS_MLME_SEARCH,
600                 IEEE80211_IBSS_MLME_JOINED,
601         } state;
602 };
603 
604 /**
605  * struct ieee80211_if_ocb - OCB mode state
606  *
607  * @housekeeping_timer: timer for periodic invocation of a housekeeping task
608  * @wrkq_flags: OCB deferred task action
609  * @incomplete_lock: delayed STA insertion lock
610  * @incomplete_stations: list of STAs waiting for delayed insertion
611  * @joined: indication if the interface is connected to an OCB network
612  */
613 struct ieee80211_if_ocb {
614         struct timer_list housekeeping_timer;
615         unsigned long wrkq_flags;
616 
617         spinlock_t incomplete_lock;
618         struct list_head incomplete_stations;
619 
620         bool joined;
621 };
622 
623 /**
624  * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
625  *
626  * these declarations define the interface, which enables
627  * vendor-specific mesh synchronization
628  *
629  */
630 struct ieee802_11_elems;
631 struct ieee80211_mesh_sync_ops {
632         void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
633                              u16 stype,
634                              struct ieee80211_mgmt *mgmt,
635                              struct ieee802_11_elems *elems,
636                              struct ieee80211_rx_status *rx_status);
637 
638         /* should be called with beacon_data under RCU read lock */
639         void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
640                            struct beacon_data *beacon);
641         /* add other framework functions here */
642 };
643 
644 struct mesh_csa_settings {
645         struct rcu_head rcu_head;
646         struct cfg80211_csa_settings settings;
647 };
648 
649 struct ieee80211_if_mesh {
650         struct timer_list housekeeping_timer;
651         struct timer_list mesh_path_timer;
652         struct timer_list mesh_path_root_timer;
653 
654         unsigned long wrkq_flags;
655         unsigned long mbss_changed;
656 
657         bool userspace_handles_dfs;
658 
659         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
660         size_t mesh_id_len;
661         /* Active Path Selection Protocol Identifier */
662         u8 mesh_pp_id;
663         /* Active Path Selection Metric Identifier */
664         u8 mesh_pm_id;
665         /* Congestion Control Mode Identifier */
666         u8 mesh_cc_id;
667         /* Synchronization Protocol Identifier */
668         u8 mesh_sp_id;
669         /* Authentication Protocol Identifier */
670         u8 mesh_auth_id;
671         /* Local mesh Sequence Number */
672         u32 sn;
673         /* Last used PREQ ID */
674         u32 preq_id;
675         atomic_t mpaths;
676         /* Timestamp of last SN update */
677         unsigned long last_sn_update;
678         /* Time when it's ok to send next PERR */
679         unsigned long next_perr;
680         /* Timestamp of last PREQ sent */
681         unsigned long last_preq;
682         struct mesh_rmc *rmc;
683         spinlock_t mesh_preq_queue_lock;
684         struct mesh_preq_queue preq_queue;
685         int preq_queue_len;
686         struct mesh_stats mshstats;
687         struct mesh_config mshcfg;
688         atomic_t estab_plinks;
689         u32 mesh_seqnum;
690         bool accepting_plinks;
691         int num_gates;
692         struct beacon_data __rcu *beacon;
693         const u8 *ie;
694         u8 ie_len;
695         enum {
696                 IEEE80211_MESH_SEC_NONE = 0x0,
697                 IEEE80211_MESH_SEC_AUTHED = 0x1,
698                 IEEE80211_MESH_SEC_SECURED = 0x2,
699         } security;
700         bool user_mpm;
701         /* Extensible Synchronization Framework */
702         const struct ieee80211_mesh_sync_ops *sync_ops;
703         s64 sync_offset_clockdrift_max;
704         spinlock_t sync_offset_lock;
705         /* mesh power save */
706         enum nl80211_mesh_power_mode nonpeer_pm;
707         int ps_peers_light_sleep;
708         int ps_peers_deep_sleep;
709         struct ps_data ps;
710         /* Channel Switching Support */
711         struct mesh_csa_settings __rcu *csa;
712         enum {
713                 IEEE80211_MESH_CSA_ROLE_NONE,
714                 IEEE80211_MESH_CSA_ROLE_INIT,
715                 IEEE80211_MESH_CSA_ROLE_REPEATER,
716         } csa_role;
717         u8 chsw_ttl;
718         u16 pre_value;
719 
720         /* offset from skb->data while building IE */
721         int meshconf_offset;
722 
723         struct mesh_table *mesh_paths;
724         struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */
725         int mesh_paths_generation;
726         int mpp_paths_generation;
727 };
728 
729 #ifdef CONFIG_MAC80211_MESH
730 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
731         do { (msh)->mshstats.name++; } while (0)
732 #else
733 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
734         do { } while (0)
735 #endif
736 
737 /**
738  * enum ieee80211_sub_if_data_flags - virtual interface flags
739  *
740  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
741  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
742  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
743  *      associated stations and deliver multicast frames both
744  *      back to wireless media and to the local net stack.
745  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
746  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
747  */
748 enum ieee80211_sub_if_data_flags {
749         IEEE80211_SDATA_ALLMULTI                = BIT(0),
750         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
751         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
752         IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
753         IEEE80211_SDATA_IN_DRIVER               = BIT(5),
754 };
755 
756 /**
757  * enum ieee80211_sdata_state_bits - virtual interface state bits
758  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
759  *      mirrors netif_running() but is separate for interface type
760  *      change handling while the interface is up
761  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
762  *      mode, so queues are stopped
763  * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
764  *      to offchannel, reset when offchannel returns
765  */
766 enum ieee80211_sdata_state_bits {
767         SDATA_STATE_RUNNING,
768         SDATA_STATE_OFFCHANNEL,
769         SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
770 };
771 
772 /**
773  * enum ieee80211_chanctx_mode - channel context configuration mode
774  *
775  * @IEEE80211_CHANCTX_SHARED: channel context may be used by
776  *      multiple interfaces
777  * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
778  *      only by a single interface. This can be used for example for
779  *      non-fixed channel IBSS.
780  */
781 enum ieee80211_chanctx_mode {
782         IEEE80211_CHANCTX_SHARED,
783         IEEE80211_CHANCTX_EXCLUSIVE
784 };
785 
786 /**
787  * enum ieee80211_chanctx_replace_state - channel context replacement state
788  *
789  * This is used for channel context in-place reservations that require channel
790  * context switch/swap.
791  *
792  * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
793  * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
794  *      by a (not yet registered) channel context pointed by %replace_ctx.
795  * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
796  *      replaces an existing channel context pointed to by %replace_ctx.
797  */
798 enum ieee80211_chanctx_replace_state {
799         IEEE80211_CHANCTX_REPLACE_NONE,
800         IEEE80211_CHANCTX_WILL_BE_REPLACED,
801         IEEE80211_CHANCTX_REPLACES_OTHER,
802 };
803 
804 struct ieee80211_chanctx {
805         struct list_head list;
806         struct rcu_head rcu_head;
807 
808         struct list_head assigned_vifs;
809         struct list_head reserved_vifs;
810 
811         enum ieee80211_chanctx_replace_state replace_state;
812         struct ieee80211_chanctx *replace_ctx;
813 
814         enum ieee80211_chanctx_mode mode;
815         bool driver_present;
816 
817         struct ieee80211_chanctx_conf conf;
818 };
819 
820 struct mac80211_qos_map {
821         struct cfg80211_qos_map qos_map;
822         struct rcu_head rcu_head;
823 };
824 
825 enum txq_info_flags {
826         IEEE80211_TXQ_STOP,
827         IEEE80211_TXQ_AMPDU,
828         IEEE80211_TXQ_NO_AMSDU,
829         IEEE80211_TXQ_STOP_NETIF_TX,
830 };
831 
832 /**
833  * struct txq_info - per tid queue
834  *
835  * @tin: contains packets split into multiple flows
836  * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
837  *      a fq_flow which is already owned by a different tin
838  * @def_cvars: codel vars for @def_flow
839  * @frags: used to keep fragments created after dequeue
840  * @schedule_order: used with ieee80211_local->active_txqs
841  * @schedule_round: counter to prevent infinite loops on TXQ scheduling
842  */
843 struct txq_info {
844         struct fq_tin tin;
845         struct fq_flow def_flow;
846         struct codel_vars def_cvars;
847         struct codel_stats cstats;
848         struct sk_buff_head frags;
849         struct list_head schedule_order;
850         u16 schedule_round;
851         unsigned long flags;
852 
853         /* keep last! */
854         struct ieee80211_txq txq;
855 };
856 
857 struct ieee80211_if_mntr {
858         u32 flags;
859         u8 mu_follow_addr[ETH_ALEN] __aligned(2);
860 
861         struct list_head list;
862 };
863 
864 /**
865  * struct ieee80211_if_nan - NAN state
866  *
867  * @conf: current NAN configuration
868  * @func_ids: a bitmap of available instance_id's
869  */
870 struct ieee80211_if_nan {
871         struct cfg80211_nan_conf conf;
872 
873         /* protects function_inst_ids */
874         spinlock_t func_lock;
875         struct idr function_inst_ids;
876 };
877 
878 struct ieee80211_sub_if_data {
879         struct list_head list;
880 
881         struct wireless_dev wdev;
882 
883         /* keys */
884         struct list_head key_list;
885 
886         /* count for keys needing tailroom space allocation */
887         int crypto_tx_tailroom_needed_cnt;
888         int crypto_tx_tailroom_pending_dec;
889         struct delayed_work dec_tailroom_needed_wk;
890 
891         struct net_device *dev;
892         struct ieee80211_local *local;
893 
894         unsigned int flags;
895 
896         unsigned long state;
897 
898         char name[IFNAMSIZ];
899 
900         /* Fragment table for host-based reassembly */
901         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
902         unsigned int fragment_next;
903 
904         /* TID bitmap for NoAck policy */
905         u16 noack_map;
906 
907         /* bit field of ACM bits (BIT(802.1D tag)) */
908         u8 wmm_acm;
909 
910         struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
911         struct ieee80211_key __rcu *default_unicast_key;
912         struct ieee80211_key __rcu *default_multicast_key;
913         struct ieee80211_key __rcu *default_mgmt_key;
914 
915         u16 sequence_number;
916         __be16 control_port_protocol;
917         bool control_port_no_encrypt;
918         bool control_port_over_nl80211;
919         int encrypt_headroom;
920 
921         atomic_t num_tx_queued;
922         struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
923         struct mac80211_qos_map __rcu *qos_map;
924 
925         struct work_struct csa_finalize_work;
926         bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
927         struct cfg80211_chan_def csa_chandef;
928 
929         struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
930         struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
931 
932         /* context reservation -- protected with chanctx_mtx */
933         struct ieee80211_chanctx *reserved_chanctx;
934         struct cfg80211_chan_def reserved_chandef;
935         bool reserved_radar_required;
936         bool reserved_ready;
937 
938         /* used to reconfigure hardware SM PS */
939         struct work_struct recalc_smps;
940 
941         struct work_struct work;
942         struct sk_buff_head skb_queue;
943 
944         u8 needed_rx_chains;
945         enum ieee80211_smps_mode smps_mode;
946 
947         int user_power_level; /* in dBm */
948         int ap_power_level; /* in dBm */
949 
950         bool radar_required;
951         struct delayed_work dfs_cac_timer_work;
952 
953         /*
954          * AP this belongs to: self in AP mode and
955          * corresponding AP in VLAN mode, NULL for
956          * all others (might be needed later in IBSS)
957          */
958         struct ieee80211_if_ap *bss;
959 
960         /* bitmap of allowed (non-MCS) rate indexes for rate control */
961         u32 rc_rateidx_mask[NUM_NL80211_BANDS];
962 
963         bool rc_has_mcs_mask[NUM_NL80211_BANDS];
964         u8  rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
965 
966         bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
967         u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
968 
969         union {
970                 struct ieee80211_if_ap ap;
971                 struct ieee80211_if_wds wds;
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         } debugfs;
988 #endif
989 
990         /* must be last, dynamically sized area in this! */
991         struct ieee80211_vif vif;
992 };
993 
994 static inline
995 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
996 {
997         return container_of(p, struct ieee80211_sub_if_data, vif);
998 }
999 
1000 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
1001         __acquires(&sdata->wdev.mtx)
1002 {
1003         mutex_lock(&sdata->wdev.mtx);
1004         __acquire(&sdata->wdev.mtx);
1005 }
1006 
1007 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
1008         __releases(&sdata->wdev.mtx)
1009 {
1010         mutex_unlock(&sdata->wdev.mtx);
1011         __release(&sdata->wdev.mtx);
1012 }
1013 
1014 #define sdata_dereference(p, sdata) \
1015         rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
1016 
1017 static inline void
1018 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
1019 {
1020         lockdep_assert_held(&sdata->wdev.mtx);
1021 }
1022 
1023 static inline int
1024 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1025 {
1026         switch (chandef->width) {
1027         case NL80211_CHAN_WIDTH_5:
1028                 return 2;
1029         case NL80211_CHAN_WIDTH_10:
1030                 return 1;
1031         default:
1032                 return 0;
1033         }
1034 }
1035 
1036 static inline int
1037 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1038 {
1039         struct ieee80211_chanctx_conf *chanctx_conf;
1040         int shift = 0;
1041 
1042         rcu_read_lock();
1043         chanctx_conf = rcu_dereference(vif->chanctx_conf);
1044         if (chanctx_conf)
1045                 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1046         rcu_read_unlock();
1047 
1048         return shift;
1049 }
1050 
1051 enum {
1052         IEEE80211_RX_MSG        = 1,
1053         IEEE80211_TX_STATUS_MSG = 2,
1054 };
1055 
1056 enum queue_stop_reason {
1057         IEEE80211_QUEUE_STOP_REASON_DRIVER,
1058         IEEE80211_QUEUE_STOP_REASON_PS,
1059         IEEE80211_QUEUE_STOP_REASON_CSA,
1060         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1061         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1062         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1063         IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1064         IEEE80211_QUEUE_STOP_REASON_FLUSH,
1065         IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1066         IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1067 
1068         IEEE80211_QUEUE_STOP_REASONS,
1069 };
1070 
1071 #ifdef CONFIG_MAC80211_LEDS
1072 struct tpt_led_trigger {
1073         char name[32];
1074         const struct ieee80211_tpt_blink *blink_table;
1075         unsigned int blink_table_len;
1076         struct timer_list timer;
1077         struct ieee80211_local *local;
1078         unsigned long prev_traffic;
1079         unsigned long tx_bytes, rx_bytes;
1080         unsigned int active, want;
1081         bool running;
1082 };
1083 #endif
1084 
1085 /**
1086  * mac80211 scan flags - currently active scan mode
1087  *
1088  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1089  *      well be on the operating channel
1090  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1091  *      determine if we are on the operating channel or not
1092  * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
1093  *      channel. This should not interrupt normal traffic.
1094  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1095  *      that the scan completed.
1096  * @SCAN_ABORTED: Set for our scan work function when the driver reported
1097  *      a scan complete for an aborted scan.
1098  * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1099  *      cancelled.
1100  */
1101 enum {
1102         SCAN_SW_SCANNING,
1103         SCAN_HW_SCANNING,
1104         SCAN_ONCHANNEL_SCANNING,
1105         SCAN_COMPLETED,
1106         SCAN_ABORTED,
1107         SCAN_HW_CANCELLED,
1108 };
1109 
1110 /**
1111  * enum mac80211_scan_state - scan state machine states
1112  *
1113  * @SCAN_DECISION: Main entry point to the scan state machine, this state
1114  *      determines if we should keep on scanning or switch back to the
1115  *      operating channel
1116  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1117  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1118  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1119  *      send out data
1120  * @SCAN_RESUME: Resume the scan and scan the next channel
1121  * @SCAN_ABORT: Abort the scan and go back to operating channel
1122  */
1123 enum mac80211_scan_state {
1124         SCAN_DECISION,
1125         SCAN_SET_CHANNEL,
1126         SCAN_SEND_PROBE,
1127         SCAN_SUSPEND,
1128         SCAN_RESUME,
1129         SCAN_ABORT,
1130 };
1131 
1132 struct ieee80211_local {
1133         /* embed the driver visible part.
1134          * don't cast (use the static inlines below), but we keep
1135          * it first anyway so they become a no-op */
1136         struct ieee80211_hw hw;
1137 
1138         struct fq fq;
1139         struct codel_vars *cvars;
1140         struct codel_params cparams;
1141 
1142         /* protects active_txqs and txqi->schedule_order */
1143         spinlock_t active_txq_lock[IEEE80211_NUM_ACS];
1144         struct list_head active_txqs[IEEE80211_NUM_ACS];
1145         u16 schedule_round[IEEE80211_NUM_ACS];
1146 
1147         u16 airtime_flags;
1148 
1149         const struct ieee80211_ops *ops;
1150 
1151         /*
1152          * private workqueue to mac80211. mac80211 makes this accessible
1153          * via ieee80211_queue_work()
1154          */
1155         struct workqueue_struct *workqueue;
1156 
1157         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1158         int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1159         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1160         spinlock_t queue_stop_reason_lock;
1161 
1162         int open_count;
1163         int monitors, cooked_mntrs;
1164         /* number of interfaces with corresponding FIF_ flags */
1165         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1166             fif_probe_req;
1167         int probe_req_reg;
1168         unsigned int filter_flags; /* FIF_* */
1169 
1170         bool wiphy_ciphers_allocated;
1171 
1172         bool use_chanctx;
1173 
1174         /* protects the aggregated multicast list and filter calls */
1175         spinlock_t filter_lock;
1176 
1177         /* used for uploading changed mc list */
1178         struct work_struct reconfig_filter;
1179 
1180         /* aggregated multicast list */
1181         struct netdev_hw_addr_list mc_list;
1182 
1183         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1184 
1185         /*
1186          * suspended is true if we finished all the suspend _and_ we have
1187          * not yet come up from resume. This is to be used by mac80211
1188          * to ensure driver sanity during suspend and mac80211's own
1189          * sanity. It can eventually be used for WoW as well.
1190          */
1191         bool suspended;
1192 
1193         /*
1194          * Resuming is true while suspended, but when we're reprogramming the
1195          * hardware -- at that time it's allowed to use ieee80211_queue_work()
1196          * again even though some other parts of the stack are still suspended
1197          * and we still drop received frames to avoid waking the stack.
1198          */
1199         bool resuming;
1200 
1201         /*
1202          * quiescing is true during the suspend process _only_ to
1203          * ease timer cancelling etc.
1204          */
1205         bool quiescing;
1206 
1207         /* device is started */
1208         bool started;
1209 
1210         /* device is during a HW reconfig */
1211         bool in_reconfig;
1212 
1213         /* wowlan is enabled -- don't reconfig on resume */
1214         bool wowlan;
1215 
1216         struct work_struct radar_detected_work;
1217 
1218         /* number of RX chains the hardware has */
1219         u8 rx_chains;
1220 
1221         /* bitmap of which sbands were copied */
1222         u8 sband_allocated;
1223 
1224         int tx_headroom; /* required headroom for hardware/radiotap */
1225 
1226         /* Tasklet and skb queue to process calls from IRQ mode. All frames
1227          * added to skb_queue will be processed, but frames in
1228          * skb_queue_unreliable may be dropped if the total length of these
1229          * queues increases over the limit. */
1230 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1231         struct tasklet_struct tasklet;
1232         struct sk_buff_head skb_queue;
1233         struct sk_buff_head skb_queue_unreliable;
1234 
1235         spinlock_t rx_path_lock;
1236 
1237         /* Station data */
1238         /*
1239          * The mutex only protects the list, hash table and
1240          * counter, reads are done with RCU.
1241          */
1242         struct mutex sta_mtx;
1243         spinlock_t tim_lock;
1244         unsigned long num_sta;
1245         struct list_head sta_list;
1246         struct rhltable sta_hash;
1247         struct timer_list sta_cleanup;
1248         int sta_generation;
1249 
1250         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1251         struct tasklet_struct tx_pending_tasklet;
1252         struct tasklet_struct wake_txqs_tasklet;
1253 
1254         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1255 
1256         /* number of interfaces with allmulti RX */
1257         atomic_t iff_allmultis;
1258 
1259         struct rate_control_ref *rate_ctrl;
1260 
1261         struct crypto_cipher *wep_tx_tfm;
1262         struct crypto_cipher *wep_rx_tfm;
1263         u32 wep_iv;
1264 
1265         /* see iface.c */
1266         struct list_head interfaces;
1267         struct list_head mon_list; /* only that are IFF_UP && !cooked */
1268         struct mutex iflist_mtx;
1269 
1270         /*
1271          * Key mutex, protects sdata's key_list and sta_info's
1272          * key pointers (write access, they're RCU.)
1273          */
1274         struct mutex key_mtx;
1275 
1276         /* mutex for scan and work locking */
1277         struct mutex mtx;
1278 
1279         /* Scanning and BSS list */
1280         unsigned long scanning;
1281         struct cfg80211_ssid scan_ssid;
1282         struct cfg80211_scan_request *int_scan_req;
1283         struct cfg80211_scan_request __rcu *scan_req;
1284         struct ieee80211_scan_request *hw_scan_req;
1285         struct cfg80211_chan_def scan_chandef;
1286         enum nl80211_band hw_scan_band;
1287         int scan_channel_idx;
1288         int scan_ies_len;
1289         int hw_scan_ies_bufsize;
1290         struct cfg80211_scan_info scan_info;
1291 
1292         struct work_struct sched_scan_stopped_work;
1293         struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1294         struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1295         u8 scan_addr[ETH_ALEN];
1296 
1297         unsigned long leave_oper_channel_time;
1298         enum mac80211_scan_state next_scan_state;
1299         struct delayed_work scan_work;
1300         struct ieee80211_sub_if_data __rcu *scan_sdata;
1301         /* For backward compatibility only -- do not use */
1302         struct cfg80211_chan_def _oper_chandef;
1303 
1304         /* Temporary remain-on-channel for off-channel operations */
1305         struct ieee80211_channel *tmp_channel;
1306 
1307         /* channel contexts */
1308         struct list_head chanctx_list;
1309         struct mutex chanctx_mtx;
1310 
1311 #ifdef CONFIG_MAC80211_LEDS
1312         struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1313         struct led_trigger tpt_led;
1314         atomic_t tx_led_active, rx_led_active, assoc_led_active;
1315         atomic_t radio_led_active, tpt_led_active;
1316         struct tpt_led_trigger *tpt_led_trigger;
1317 #endif
1318 
1319 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1320         /* SNMP counters */
1321         /* dot11CountersTable */
1322         u32 dot11TransmittedFragmentCount;
1323         u32 dot11MulticastTransmittedFrameCount;
1324         u32 dot11FailedCount;
1325         u32 dot11RetryCount;
1326         u32 dot11MultipleRetryCount;
1327         u32 dot11FrameDuplicateCount;
1328         u32 dot11ReceivedFragmentCount;
1329         u32 dot11MulticastReceivedFrameCount;
1330         u32 dot11TransmittedFrameCount;
1331 
1332         /* TX/RX handler statistics */
1333         unsigned int tx_handlers_drop;
1334         unsigned int tx_handlers_queued;
1335         unsigned int tx_handlers_drop_wep;
1336         unsigned int tx_handlers_drop_not_assoc;
1337         unsigned int tx_handlers_drop_unauth_port;
1338         unsigned int rx_handlers_drop;
1339         unsigned int rx_handlers_queued;
1340         unsigned int rx_handlers_drop_nullfunc;
1341         unsigned int rx_handlers_drop_defrag;
1342         unsigned int tx_expand_skb_head;
1343         unsigned int tx_expand_skb_head_cloned;
1344         unsigned int rx_expand_skb_head_defrag;
1345         unsigned int rx_handlers_fragments;
1346         unsigned int tx_status_drop;
1347 #define I802_DEBUG_INC(c) (c)++
1348 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1349 #define I802_DEBUG_INC(c) do { } while (0)
1350 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1351 
1352 
1353         int total_ps_buffered; /* total number of all buffered unicast and
1354                                 * multicast packets for power saving stations
1355                                 */
1356 
1357         bool pspolling;
1358         bool offchannel_ps_enabled;
1359         /*
1360          * PS can only be enabled when we have exactly one managed
1361          * interface (and monitors) in PS, this then points there.
1362          */
1363         struct ieee80211_sub_if_data *ps_sdata;
1364         struct work_struct dynamic_ps_enable_work;
1365         struct work_struct dynamic_ps_disable_work;
1366         struct timer_list dynamic_ps_timer;
1367         struct notifier_block ifa_notifier;
1368         struct notifier_block ifa6_notifier;
1369 
1370         /*
1371          * The dynamic ps timeout configured from user space via WEXT -
1372          * this will override whatever chosen by mac80211 internally.
1373          */
1374         int dynamic_ps_forced_timeout;
1375 
1376         int user_power_level; /* in dBm, for all interfaces */
1377 
1378         enum ieee80211_smps_mode smps_mode;
1379 
1380         struct work_struct restart_work;
1381 
1382 #ifdef CONFIG_MAC80211_DEBUGFS
1383         struct local_debugfsdentries {
1384                 struct dentry *rcdir;
1385                 struct dentry *keys;
1386         } debugfs;
1387 #endif
1388 
1389         /*
1390          * Remain-on-channel support
1391          */
1392         struct delayed_work roc_work;
1393         struct list_head roc_list;
1394         struct work_struct hw_roc_start, hw_roc_done;
1395         unsigned long hw_roc_start_time;
1396         u64 roc_cookie_counter;
1397 
1398         struct idr ack_status_frames;
1399         spinlock_t ack_status_lock;
1400 
1401         struct ieee80211_sub_if_data __rcu *p2p_sdata;
1402 
1403         /* virtual monitor interface */
1404         struct ieee80211_sub_if_data __rcu *monitor_sdata;
1405         struct cfg80211_chan_def monitor_chandef;
1406 
1407         /* extended capabilities provided by mac80211 */
1408         u8 ext_capa[8];
1409 
1410         /* TDLS channel switch */
1411         struct work_struct tdls_chsw_work;
1412         struct sk_buff_head skb_queue_tdls_chsw;
1413 };
1414 
1415 static inline struct ieee80211_sub_if_data *
1416 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1417 {
1418         return netdev_priv(dev);
1419 }
1420 
1421 static inline struct ieee80211_sub_if_data *
1422 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1423 {
1424         return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1425 }
1426 
1427 static inline struct ieee80211_supported_band *
1428 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1429 {
1430         struct ieee80211_local *local = sdata->local;
1431         struct ieee80211_chanctx_conf *chanctx_conf;
1432         enum nl80211_band band;
1433 
1434         rcu_read_lock();
1435         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1436 
1437         if (WARN_ON_ONCE(!chanctx_conf)) {
1438                 rcu_read_unlock();
1439                 return NULL;
1440         }
1441 
1442         band = chanctx_conf->def.chan->band;
1443         rcu_read_unlock();
1444 
1445         return local->hw.wiphy->bands[band];
1446 }
1447 
1448 /* this struct holds the value parsing from channel switch IE  */
1449 struct ieee80211_csa_ie {
1450         struct cfg80211_chan_def chandef;
1451         u8 mode;
1452         u8 count;
1453         u8 ttl;
1454         u16 pre_value;
1455         u16 reason_code;
1456         u32 max_switch_time;
1457 };
1458 
1459 /* Parsed Information Elements */
1460 struct ieee802_11_elems {
1461         const u8 *ie_start;
1462         size_t total_len;
1463 
1464         /* pointers to IEs */
1465         const struct ieee80211_tdls_lnkie *lnk_id;
1466         const struct ieee80211_ch_switch_timing *ch_sw_timing;
1467         const u8 *ext_capab;
1468         const u8 *ssid;
1469         const u8 *supp_rates;
1470         const u8 *ds_params;
1471         const struct ieee80211_tim_ie *tim;
1472         const u8 *challenge;
1473         const u8 *rsn;
1474         const u8 *erp_info;
1475         const u8 *ext_supp_rates;
1476         const u8 *wmm_info;
1477         const u8 *wmm_param;
1478         const struct ieee80211_ht_cap *ht_cap_elem;
1479         const struct ieee80211_ht_operation *ht_operation;
1480         const struct ieee80211_vht_cap *vht_cap_elem;
1481         const struct ieee80211_vht_operation *vht_operation;
1482         const struct ieee80211_meshconf_ie *mesh_config;
1483         const u8 *he_cap;
1484         const struct ieee80211_he_operation *he_operation;
1485         const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1486         const u8 *uora_element;
1487         const u8 *mesh_id;
1488         const u8 *peering;
1489         const __le16 *awake_window;
1490         const u8 *preq;
1491         const u8 *prep;
1492         const u8 *perr;
1493         const struct ieee80211_rann_ie *rann;
1494         const struct ieee80211_channel_sw_ie *ch_switch_ie;
1495         const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1496         const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1497         const u8 *max_channel_switch_time;
1498         const u8 *country_elem;
1499         const u8 *pwr_constr_elem;
1500         const u8 *cisco_dtpc_elem;
1501         const struct ieee80211_timeout_interval_ie *timeout_int;
1502         const u8 *opmode_notif;
1503         const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1504         struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1505         const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1506         const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
1507         const struct ieee80211_bssid_index *bssid_index;
1508         const u8 *nontransmitted_bssid_profile;
1509         u8 max_bssid_indicator;
1510         u8 dtim_count;
1511         u8 dtim_period;
1512 
1513         /* length of them, respectively */
1514         u8 ext_capab_len;
1515         u8 ssid_len;
1516         u8 supp_rates_len;
1517         u8 tim_len;
1518         u8 challenge_len;
1519         u8 rsn_len;
1520         u8 ext_supp_rates_len;
1521         u8 wmm_info_len;
1522         u8 wmm_param_len;
1523         u8 he_cap_len;
1524         u8 mesh_id_len;
1525         u8 peering_len;
1526         u8 preq_len;
1527         u8 prep_len;
1528         u8 perr_len;
1529         u8 country_elem_len;
1530         u8 bssid_index_len;
1531 
1532         /* whether a parse error occurred while retrieving these elements */
1533         bool parse_error;
1534 };
1535 
1536 static inline struct ieee80211_local *hw_to_local(
1537         struct ieee80211_hw *hw)
1538 {
1539         return container_of(hw, struct ieee80211_local, hw);
1540 }
1541 
1542 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1543 {
1544         return container_of(txq, struct txq_info, txq);
1545 }
1546 
1547 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1548 {
1549         struct txq_info *txqi = to_txq_info(txq);
1550 
1551         return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1552 }
1553 
1554 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1555 {
1556         return ether_addr_equal(raddr, addr) ||
1557                is_broadcast_ether_addr(raddr);
1558 }
1559 
1560 static inline bool
1561 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1562 {
1563         WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1564                      status->flag & RX_FLAG_MACTIME_END);
1565         if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END))
1566                 return true;
1567         /* can't handle non-legacy preamble yet */
1568         if (status->flag & RX_FLAG_MACTIME_PLCP_START &&
1569             status->encoding == RX_ENC_LEGACY)
1570                 return true;
1571         return false;
1572 }
1573 
1574 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1575 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1576 
1577 /* This function returns the number of multicast stations connected to this
1578  * interface. It returns -1 if that number is not tracked, that is for netdevs
1579  * not in AP or AP_VLAN mode or when using 4addr.
1580  */
1581 static inline int
1582 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1583 {
1584         if (sdata->vif.type == NL80211_IFTYPE_AP)
1585                 return atomic_read(&sdata->u.ap.num_mcast_sta);
1586         if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1587                 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1588         return -1;
1589 }
1590 
1591 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1592                                      struct ieee80211_rx_status *status,
1593                                      unsigned int mpdu_len,
1594                                      unsigned int mpdu_offset);
1595 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1596 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1597 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1598                                       u32 changed);
1599 void ieee80211_configure_filter(struct ieee80211_local *local);
1600 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1601 
1602 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1603 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1604                              u64 *cookie, gfp_t gfp);
1605 
1606 void ieee80211_check_fast_rx(struct sta_info *sta);
1607 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1608 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1609 void ieee80211_clear_fast_rx(struct sta_info *sta);
1610 
1611 /* STA code */
1612 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1613 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1614                        struct cfg80211_auth_request *req);
1615 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1616                         struct cfg80211_assoc_request *req);
1617 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1618                          struct cfg80211_deauth_request *req);
1619 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1620                            struct cfg80211_disassoc_request *req);
1621 void ieee80211_send_pspoll(struct ieee80211_local *local,
1622                            struct ieee80211_sub_if_data *sdata);
1623 void ieee80211_recalc_ps(struct ieee80211_local *local);
1624 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1625 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1626 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1627 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1628                                   struct sk_buff *skb);
1629 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1630 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1631 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1632 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1633                                   __le16 fc, bool acked);
1634 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1635 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1636 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1637 
1638 /* IBSS code */
1639 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1640 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1641 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1642                               const u8 *bssid, const u8 *addr, u32 supp_rates);
1643 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1644                         struct cfg80211_ibss_params *params);
1645 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1646 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1647 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1648                                    struct sk_buff *skb);
1649 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1650                               struct cfg80211_csa_settings *csa_settings);
1651 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1652 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1653 
1654 /* OCB code */
1655 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1656 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1657                              const u8 *bssid, const u8 *addr, u32 supp_rates);
1658 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1659 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1660                        struct ocb_setup *setup);
1661 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1662 
1663 /* mesh code */
1664 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1665 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1666                                    struct sk_buff *skb);
1667 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1668                               struct cfg80211_csa_settings *csa_settings);
1669 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1670 
1671 /* scan/BSS handling */
1672 void ieee80211_scan_work(struct work_struct *work);
1673 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1674                                 const u8 *ssid, u8 ssid_len,
1675                                 struct ieee80211_channel **channels,
1676                                 unsigned int n_channels,
1677                                 enum nl80211_bss_scan_width scan_width);
1678 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1679                            struct cfg80211_scan_request *req);
1680 void ieee80211_scan_cancel(struct ieee80211_local *local);
1681 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1682 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1683 
1684 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1685 struct ieee80211_bss *
1686 ieee80211_bss_info_update(struct ieee80211_local *local,
1687                           struct ieee80211_rx_status *rx_status,
1688                           struct ieee80211_mgmt *mgmt,
1689                           size_t len,
1690                           struct ieee80211_channel *channel);
1691 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1692                           struct ieee80211_bss *bss);
1693 
1694 /* scheduled scan handling */
1695 int
1696 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1697                                      struct cfg80211_sched_scan_request *req);
1698 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1699                                        struct cfg80211_sched_scan_request *req);
1700 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1701 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1702 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1703 
1704 /* off-channel/mgmt-tx */
1705 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1706 void ieee80211_offchannel_return(struct ieee80211_local *local);
1707 void ieee80211_roc_setup(struct ieee80211_local *local);
1708 void ieee80211_start_next_roc(struct ieee80211_local *local);
1709 void ieee80211_roc_purge(struct ieee80211_local *local,
1710                          struct ieee80211_sub_if_data *sdata);
1711 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1712                                 struct ieee80211_channel *chan,
1713                                 unsigned int duration, u64 *cookie);
1714 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1715                                        struct wireless_dev *wdev, u64 cookie);
1716 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1717                       struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1718 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1719                                   struct wireless_dev *wdev, u64 cookie);
1720 
1721 /* channel switch handling */
1722 void ieee80211_csa_finalize_work(struct work_struct *work);
1723 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1724                              struct cfg80211_csa_settings *params);
1725 
1726 /* interface handling */
1727 int ieee80211_iface_init(void);
1728 void ieee80211_iface_exit(void);
1729 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1730                      unsigned char name_assign_type,
1731                      struct wireless_dev **new_wdev, enum nl80211_iftype type,
1732                      struct vif_params *params);
1733 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1734                              enum nl80211_iftype type);
1735 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1736 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1737 u32 ieee80211_idle_off(struct ieee80211_local *local);
1738 void ieee80211_recalc_idle(struct ieee80211_local *local);
1739 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1740                                     const int offset);
1741 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1742 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1743 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1744 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1745 
1746 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1747 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1748                               bool update_bss);
1749 
1750 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1751 {
1752         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1753 }
1754 
1755 /* tx handling */
1756 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1757 void ieee80211_tx_pending(unsigned long data);
1758 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1759                                          struct net_device *dev);
1760 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1761                                        struct net_device *dev);
1762 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1763                                   struct net_device *dev,
1764                                   u32 info_flags);
1765 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1766                               struct sk_buff_head *skbs);
1767 struct sk_buff *
1768 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1769                               struct sk_buff *skb, u32 info_flags);
1770 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1771                           struct ieee80211_supported_band *sband,
1772                           int retry_count, int shift, bool send_to_cooked);
1773 
1774 void ieee80211_check_fast_xmit(struct sta_info *sta);
1775 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1776 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1777 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1778 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
1779                               const u8 *buf, size_t len,
1780                               const u8 *dest, __be16 proto, bool unencrypted);
1781 
1782 /* HT */
1783 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1784                                      struct ieee80211_sta_ht_cap *ht_cap);
1785 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1786                                        struct ieee80211_supported_band *sband,
1787                                        const struct ieee80211_ht_cap *ht_cap_ie,
1788                                        struct sta_info *sta);
1789 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1790                           const u8 *da, u16 tid,
1791                           u16 initiator, u16 reason_code);
1792 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1793                                enum ieee80211_smps_mode smps, const u8 *da,
1794                                const u8 *bssid);
1795 void ieee80211_request_smps_ap_work(struct work_struct *work);
1796 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1797 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1798                                    enum ieee80211_smps_mode smps_mode_new);
1799 
1800 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1801                                      u16 initiator, u16 reason, bool stop);
1802 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1803                                     u16 initiator, u16 reason, bool stop);
1804 void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
1805                                       u8 dialog_token, u16 timeout,
1806                                       u16 start_seq_num, u16 ba_policy, u16 tid,
1807                                       u16 buf_size, bool tx, bool auto_seq);
1808 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1809                                          enum ieee80211_agg_stop_reason reason);
1810 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1811                              struct sta_info *sta,
1812                              struct ieee80211_mgmt *mgmt, size_t len);
1813 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1814                                   struct sta_info *sta,
1815                                   struct ieee80211_mgmt *mgmt,
1816                                   size_t len);
1817 void ieee80211_process_addba_request(struct ieee80211_local *local,
1818                                      struct sta_info *sta,
1819                                      struct ieee80211_mgmt *mgmt,
1820                                      size_t len);
1821 
1822 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1823                                    enum ieee80211_agg_stop_reason reason);
1824 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1825                                     enum ieee80211_agg_stop_reason reason);
1826 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
1827                               struct tid_ampdu_tx *tid_tx);
1828 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
1829                              struct tid_ampdu_tx *tid_tx);
1830 void ieee80211_ba_session_work(struct work_struct *work);
1831 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1832 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1833 
1834 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1835 enum nl80211_smps_mode
1836 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
1837 
1838 /* VHT */
1839 void
1840 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1841                                     struct ieee80211_supported_band *sband,
1842                                     const struct ieee80211_vht_cap *vht_cap_ie,
1843                                     struct sta_info *sta);
1844 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1845 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1846 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1847 enum ieee80211_sta_rx_bandwidth
1848 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
1849 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
1850 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1851 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
1852                                  struct ieee80211_mgmt *mgmt);
1853 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1854                                   struct sta_info *sta, u8 opmode,
1855                                   enum nl80211_band band);
1856 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1857                                  struct sta_info *sta, u8 opmode,
1858                                  enum nl80211_band band);
1859 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1860                                       struct ieee80211_sta_vht_cap *vht_cap);
1861 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
1862                                      u16 vht_mask[NL80211_VHT_NSS_MAX]);
1863 enum nl80211_chan_width
1864 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta);
1865 
1866 /* HE */
1867 void
1868 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
1869                                   struct ieee80211_supported_band *sband,
1870                                   const u8 *he_cap_ie, u8 he_cap_len,
1871                                   struct sta_info *sta);
1872 
1873 /* Spectrum management */
1874 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1875                                        struct ieee80211_mgmt *mgmt,
1876                                        size_t len);
1877 /**
1878  * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1879  * @sdata: the sdata of the interface which has received the frame
1880  * @elems: parsed 802.11 elements received with the frame
1881  * @current_band: indicates the current band
1882  * @sta_flags: contains information about own capabilities and restrictions
1883  *      to decide which channel switch announcements can be accepted. Only the
1884  *      following subset of &enum ieee80211_sta_flags are evaluated:
1885  *      %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1886  *      %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1887  *      %IEEE80211_STA_DISABLE_160MHZ.
1888  * @bssid: the currently connected bssid (for reporting)
1889  * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1890         All of them will be filled with if success only.
1891  * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1892  */
1893 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1894                                  struct ieee802_11_elems *elems,
1895                                  enum nl80211_band current_band,
1896                                  u32 sta_flags, u8 *bssid,
1897                                  struct ieee80211_csa_ie *csa_ie);
1898 
1899 /* Suspend/resume and hw reconfiguration */
1900 int ieee80211_reconfig(struct ieee80211_local *local);
1901 void ieee80211_stop_device(struct ieee80211_local *local);
1902 
1903 int __ieee80211_suspend(struct ieee80211_hw *hw,
1904                         struct cfg80211_wowlan *wowlan);
1905 
1906 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1907 {
1908         struct ieee80211_local *local = hw_to_local(hw);
1909 
1910         WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
1911              !test_bit(SCAN_COMPLETED, &local->scanning),
1912                 "%s: resume with hardware scan still in progress\n",
1913                 wiphy_name(hw->wiphy));
1914 
1915         return ieee80211_reconfig(hw_to_local(hw));
1916 }
1917 
1918 /* utility functions/constants */
1919 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1920 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
1921                              int rate, int erp, int short_preamble,
1922                              int shift);
1923 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1924                                            struct ieee80211_tx_queue_params *qparam,
1925                                            int ac);
1926 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1927                                bool bss_notify, bool enable_qos);
1928 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
1929                     struct sta_info *sta, struct sk_buff *skb,
1930                     u32 txdata_flags);
1931 
1932 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1933                                  struct sk_buff *skb, int tid,
1934                                  enum nl80211_band band, u32 txdata_flags);
1935 
1936 static inline void
1937 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1938                           struct sk_buff *skb, int tid,
1939                           enum nl80211_band band, u32 txdata_flags)
1940 {
1941         rcu_read_lock();
1942         __ieee80211_tx_skb_tid_band(sdata, skb, tid, band, txdata_flags);
1943         rcu_read_unlock();
1944 }
1945 
1946 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1947                                         struct sk_buff *skb, int tid)
1948 {
1949         struct ieee80211_chanctx_conf *chanctx_conf;
1950 
1951         rcu_read_lock();
1952         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1953         if (WARN_ON(!chanctx_conf)) {
1954                 rcu_read_unlock();
1955                 kfree_skb(skb);
1956                 return;
1957         }
1958 
1959         __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1960                                     chanctx_conf->def.chan->band, 0);
1961         rcu_read_unlock();
1962 }
1963 
1964 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1965                                     struct sk_buff *skb)
1966 {
1967         /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1968         ieee80211_tx_skb_tid(sdata, skb, 7);
1969 }
1970 
1971 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1972                                struct ieee802_11_elems *elems,
1973                                u64 filter, u32 crc, u8 *transmitter_bssid,
1974                                u8 *bss_bssid);
1975 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1976                                           bool action,
1977                                           struct ieee802_11_elems *elems,
1978                                           u8 *transmitter_bssid,
1979                                           u8 *bss_bssid)
1980 {
1981         ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0,
1982                                    transmitter_bssid, bss_bssid);
1983 }
1984 
1985 
1986 extern const int ieee802_1d_to_ac[8];
1987 
1988 static inline int ieee80211_ac_from_tid(int tid)
1989 {
1990         return ieee802_1d_to_ac[tid & 7];
1991 }
1992 
1993 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1994 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1995 void ieee80211_dynamic_ps_timer(struct timer_list *t);
1996 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1997                              struct ieee80211_sub_if_data *sdata,
1998                              bool powersave);
1999 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
2000                              struct ieee80211_hdr *hdr);
2001 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2002                              struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
2003 
2004 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
2005                                      unsigned long queues,
2006                                      enum queue_stop_reason reason,
2007                                      bool refcounted);
2008 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
2009                                struct ieee80211_sub_if_data *sdata,
2010                                enum queue_stop_reason reason);
2011 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
2012                                struct ieee80211_sub_if_data *sdata,
2013                                enum queue_stop_reason reason);
2014 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
2015                                      unsigned long queues,
2016                                      enum queue_stop_reason reason,
2017                                      bool refcounted);
2018 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
2019                                     enum queue_stop_reason reason,
2020                                     bool refcounted);
2021 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
2022                                     enum queue_stop_reason reason,
2023                                     bool refcounted);
2024 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
2025 void ieee80211_add_pending_skb(struct ieee80211_local *local,
2026                                struct sk_buff *skb);
2027 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
2028                                 struct sk_buff_head *skbs);
2029 void ieee80211_flush_queues(struct ieee80211_local *local,
2030                             struct ieee80211_sub_if_data *sdata, bool drop);
2031 void __ieee80211_flush_queues(struct ieee80211_local *local,
2032                               struct ieee80211_sub_if_data *sdata,
2033                               unsigned int queues, bool drop);
2034 
2035 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2036 {
2037         /*
2038          * It's unsafe to try to do any work during reconfigure flow.
2039          * When the flow ends the work will be requeued.
2040          */
2041         if (local->in_reconfig)
2042                 return false;
2043 
2044         /*
2045          * If quiescing is set, we are racing with __ieee80211_suspend.
2046          * __ieee80211_suspend flushes the workers after setting quiescing,
2047          * and we check quiescing / suspended before enqueing new workers.
2048          * We should abort the worker to avoid the races below.
2049          */
2050         if (local->quiescing)
2051                 return false;
2052 
2053         /*
2054          * We might already be suspended if the following scenario occurs:
2055          * __ieee80211_suspend          Control path
2056          *
2057          *                              if (local->quiescing)
2058          *                                      return;
2059          * local->quiescing = true;
2060          * flush_workqueue();
2061          *                              queue_work(...);
2062          * local->suspended = true;
2063          * local->quiescing = false;
2064          *                              worker starts running...
2065          */
2066         if (local->suspended)
2067                 return false;
2068 
2069         return true;
2070 }
2071 
2072 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2073 void ieee80211_txq_set_params(struct ieee80211_local *local);
2074 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2075 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2076                         struct sta_info *sta,
2077                         struct txq_info *txq, int tid);
2078 void ieee80211_txq_purge(struct ieee80211_local *local,
2079                          struct txq_info *txqi);
2080 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2081                                struct ieee80211_sub_if_data *sdata);
2082 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2083                               struct txq_info *txqi);
2084 void ieee80211_wake_txqs(unsigned long data);
2085 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2086                          u16 transaction, u16 auth_alg, u16 status,
2087                          const u8 *extra, size_t extra_len, const u8 *bssid,
2088                          const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2089                          u32 tx_flags);
2090 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2091                                     const u8 *bssid, u16 stype, u16 reason,
2092                                     bool send_frame, u8 *frame_buf);
2093 
2094 enum {
2095         IEEE80211_PROBE_FLAG_DIRECTED           = BIT(0),
2096         IEEE80211_PROBE_FLAG_MIN_CONTENT        = BIT(1),
2097         IEEE80211_PROBE_FLAG_RANDOM_SN          = BIT(2),
2098 };
2099 
2100 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
2101                              size_t buffer_len,
2102                              struct ieee80211_scan_ies *ie_desc,
2103                              const u8 *ie, size_t ie_len,
2104                              u8 bands_used, u32 *rate_masks,
2105                              struct cfg80211_chan_def *chandef,
2106                              u32 flags);
2107 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2108                                           const u8 *src, const u8 *dst,
2109                                           u32 ratemask,
2110                                           struct ieee80211_channel *chan,
2111                                           const u8 *ssid, size_t ssid_len,
2112                                           const u8 *ie, size_t ie_len,
2113                                           u32 flags);
2114 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2115                             struct ieee802_11_elems *elems,
2116                             enum nl80211_band band, u32 *basic_rates);
2117 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2118                                  enum ieee80211_smps_mode smps_mode);
2119 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2120                                 enum ieee80211_smps_mode smps_mode);
2121 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
2122 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
2123 
2124 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2125 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2126                               u16 cap);
2127 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2128                                const struct cfg80211_chan_def *chandef,
2129                                u16 prot_mode, bool rifs_mode);
2130 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2131                                    const struct cfg80211_chan_def *chandef);
2132 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2133                                u32 cap);
2134 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2135                                 const struct cfg80211_chan_def *chandef);
2136 u8 *ieee80211_ie_build_he_cap(u8 *pos,
2137                               const struct ieee80211_sta_he_cap *he_cap,
2138                               u8 *end);
2139 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2140                              const struct ieee80211_supported_band *sband,
2141                              const u8 *srates, int srates_len, u32 *rates);
2142 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2143                             struct sk_buff *skb, bool need_basic,
2144                             enum nl80211_band band);
2145 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2146                                 struct sk_buff *skb, bool need_basic,
2147                                 enum nl80211_band band);
2148 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2149 
2150 /* channel management */
2151 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2152                                struct cfg80211_chan_def *chandef);
2153 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw,
2154                                 const struct ieee80211_vht_operation *oper,
2155                                 const struct ieee80211_ht_operation *htop,
2156                                 struct cfg80211_chan_def *chandef);
2157 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2158 
2159 int __must_check
2160 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
2161                           const struct cfg80211_chan_def *chandef,
2162                           enum ieee80211_chanctx_mode mode);
2163 int __must_check
2164 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
2165                               const struct cfg80211_chan_def *chandef,
2166                               enum ieee80211_chanctx_mode mode,
2167                               bool radar_required);
2168 int __must_check
2169 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2170 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2171 
2172 int __must_check
2173 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2174                                const struct cfg80211_chan_def *chandef,
2175                                u32 *changed);
2176 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2177 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2178 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2179                                          bool clear);
2180 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2181                                struct ieee80211_chanctx *ctx);
2182 
2183 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2184                                    struct ieee80211_chanctx *chanctx);
2185 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2186                                       struct ieee80211_chanctx *ctx);
2187 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2188 
2189 void ieee80211_dfs_cac_timer(unsigned long data);
2190 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2191 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2192 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2193 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2194                               struct cfg80211_csa_settings *csa_settings);
2195 
2196 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2197 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2198 const struct ieee80211_cipher_scheme *
2199 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2200                  enum nl80211_iftype iftype);
2201 int ieee80211_cs_headroom(struct ieee80211_local *local,
2202                           struct cfg80211_crypto_settings *crypto,
2203                           enum nl80211_iftype iftype);
2204 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2205                            struct ieee80211_sub_if_data *sdata);
2206 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2207                                  const struct cfg80211_chan_def *chandef,
2208                                  enum ieee80211_chanctx_mode chanmode,
2209                                  u8 radar_detect);
2210 int ieee80211_max_num_channels(struct ieee80211_local *local);
2211 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta);
2212 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2213                                        struct ieee80211_chanctx *ctx);
2214 
2215 /* TDLS */
2216 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2217                         const u8 *peer, u8 action_code, u8 dialog_token,
2218                         u16 status_code, u32 peer_capability,
2219                         bool initiator, const u8 *extra_ies,
2220                         size_t extra_ies_len);
2221 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2222                         const u8 *peer, enum nl80211_tdls_operation oper);
2223 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2224 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2225                                   const u8 *addr, u8 oper_class,
2226                                   struct cfg80211_chan_def *chandef);
2227 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2228                                           struct net_device *dev,
2229                                           const u8 *addr);
2230 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2231 void ieee80211_tdls_chsw_work(struct work_struct *wk);
2232 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2233                                       const u8 *peer, u16 reason);
2234 const char *ieee80211_get_reason_code_string(u16 reason_code);
2235 
2236 extern const struct ethtool_ops ieee80211_ethtool_ops;
2237 
2238 #ifdef CONFIG_MAC80211_NOINLINE
2239 #define debug_noinline noinline
2240 #else
2241 #define debug_noinline
2242 #endif
2243 
2244 #endif /* IEEE80211_I_H */
2245 

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