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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 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_UNICAST            BIT(1)
169 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
170 
171 struct ieee80211_tx_data {
172         struct sk_buff *skb;
173         struct sk_buff_head skbs;
174         struct ieee80211_local *local;
175         struct ieee80211_sub_if_data *sdata;
176         struct sta_info *sta;
177         struct ieee80211_key *key;
178         struct ieee80211_tx_rate rate;
179 
180         unsigned int flags;
181 };
182 
183 
184 typedef unsigned __bitwise ieee80211_rx_result;
185 #define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
186 #define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
187 #define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
188 #define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
189 
190 /**
191  * enum ieee80211_packet_rx_flags - packet RX flags
192  * @IEEE80211_RX_AMSDU: a-MSDU packet
193  * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
194  * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
195  *
196  * These are per-frame flags that are attached to a frame in the
197  * @rx_flags field of &struct ieee80211_rx_status.
198  */
199 enum ieee80211_packet_rx_flags {
200         IEEE80211_RX_AMSDU                      = BIT(3),
201         IEEE80211_RX_MALFORMED_ACTION_FRM       = BIT(4),
202         IEEE80211_RX_DEFERRED_RELEASE           = BIT(5),
203 };
204 
205 /**
206  * enum ieee80211_rx_flags - RX data flags
207  *
208  * @IEEE80211_RX_CMNTR: received on cooked monitor already
209  * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
210  *      to cfg80211_report_obss_beacon().
211  *
212  * These flags are used across handling multiple interfaces
213  * for a single frame.
214  */
215 enum ieee80211_rx_flags {
216         IEEE80211_RX_CMNTR              = BIT(0),
217         IEEE80211_RX_BEACON_REPORTED    = BIT(1),
218 };
219 
220 struct ieee80211_rx_data {
221         struct napi_struct *napi;
222         struct sk_buff *skb;
223         struct ieee80211_local *local;
224         struct ieee80211_sub_if_data *sdata;
225         struct sta_info *sta;
226         struct ieee80211_key *key;
227 
228         unsigned int flags;
229 
230         /*
231          * Index into sequence numbers array, 0..16
232          * since the last (16) is used for non-QoS,
233          * will be 16 on non-QoS frames.
234          */
235         int seqno_idx;
236 
237         /*
238          * Index into the security IV/PN arrays, 0..16
239          * since the last (16) is used for CCMP-encrypted
240          * management frames, will be set to 16 on mgmt
241          * frames and 0 on non-QoS frames.
242          */
243         int security_idx;
244 
245         u32 tkip_iv32;
246         u16 tkip_iv16;
247 };
248 
249 struct ieee80211_csa_settings {
250         const u16 *counter_offsets_beacon;
251         const u16 *counter_offsets_presp;
252 
253         int n_counter_offsets_beacon;
254         int n_counter_offsets_presp;
255 
256         u8 count;
257 };
258 
259 struct beacon_data {
260         u8 *head, *tail;
261         int head_len, tail_len;
262         struct ieee80211_meshconf_ie *meshconf;
263         u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
264         u8 csa_current_counter;
265         struct rcu_head rcu_head;
266 };
267 
268 struct probe_resp {
269         struct rcu_head rcu_head;
270         int len;
271         u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
272         u8 data[0];
273 };
274 
275 struct ps_data {
276         /* yes, this looks ugly, but guarantees that we can later use
277          * bitmap_empty :)
278          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
279         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
280                         __aligned(__alignof__(unsigned long));
281         struct sk_buff_head bc_buf;
282         atomic_t num_sta_ps; /* number of stations in PS mode */
283         int dtim_count;
284         bool dtim_bc_mc;
285 };
286 
287 struct ieee80211_if_ap {
288         struct beacon_data __rcu *beacon;
289         struct probe_resp __rcu *probe_resp;
290 
291         /* to be used after channel switch. */
292         struct cfg80211_beacon_data *next_beacon;
293         struct list_head vlans; /* write-protected with RTNL and local->mtx */
294 
295         struct ps_data ps;
296         atomic_t num_mcast_sta; /* number of stations receiving multicast */
297         enum ieee80211_smps_mode req_smps, /* requested smps mode */
298                          driver_smps_mode; /* smps mode request */
299 
300         struct work_struct request_smps_work;
301         bool multicast_to_unicast;
302 };
303 
304 struct ieee80211_if_wds {
305         struct sta_info *sta;
306         u8 remote_addr[ETH_ALEN];
307 };
308 
309 struct ieee80211_if_vlan {
310         struct list_head list; /* write-protected with RTNL and local->mtx */
311 
312         /* used for all tx if the VLAN is configured to 4-addr mode */
313         struct sta_info __rcu *sta;
314         atomic_t num_mcast_sta; /* number of stations receiving multicast */
315 };
316 
317 struct mesh_stats {
318         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
319         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
320         __u32 fwded_frames;             /* Mesh total forwarded frames */
321         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
322         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
323         __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
324 };
325 
326 #define PREQ_Q_F_START          0x1
327 #define PREQ_Q_F_REFRESH        0x2
328 struct mesh_preq_queue {
329         struct list_head list;
330         u8 dst[ETH_ALEN];
331         u8 flags;
332 };
333 
334 struct ieee80211_roc_work {
335         struct list_head list;
336 
337         struct ieee80211_sub_if_data *sdata;
338 
339         struct ieee80211_channel *chan;
340 
341         bool started, abort, hw_begun, notified;
342         bool on_channel;
343 
344         unsigned long start_time;
345 
346         u32 duration, req_duration;
347         struct sk_buff *frame;
348         u64 cookie, mgmt_tx_cookie;
349         enum ieee80211_roc_type type;
350 };
351 
352 /* flags used in struct ieee80211_if_managed.flags */
353 enum ieee80211_sta_flags {
354         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
355         IEEE80211_STA_CONTROL_PORT      = BIT(2),
356         IEEE80211_STA_DISABLE_HT        = BIT(4),
357         IEEE80211_STA_MFP_ENABLED       = BIT(6),
358         IEEE80211_STA_UAPSD_ENABLED     = BIT(7),
359         IEEE80211_STA_NULLFUNC_ACKED    = BIT(8),
360         IEEE80211_STA_RESET_SIGNAL_AVE  = BIT(9),
361         IEEE80211_STA_DISABLE_40MHZ     = BIT(10),
362         IEEE80211_STA_DISABLE_VHT       = BIT(11),
363         IEEE80211_STA_DISABLE_80P80MHZ  = BIT(12),
364         IEEE80211_STA_DISABLE_160MHZ    = BIT(13),
365         IEEE80211_STA_DISABLE_WMM       = BIT(14),
366         IEEE80211_STA_ENABLE_RRM        = BIT(15),
367 };
368 
369 struct ieee80211_mgd_auth_data {
370         struct cfg80211_bss *bss;
371         unsigned long timeout;
372         int tries;
373         u16 algorithm, expected_transaction;
374 
375         u8 key[WLAN_KEY_LEN_WEP104];
376         u8 key_len, key_idx;
377         bool done;
378         bool timeout_started;
379 
380         u16 sae_trans, sae_status;
381         size_t data_len;
382         u8 data[];
383 };
384 
385 struct ieee80211_mgd_assoc_data {
386         struct cfg80211_bss *bss;
387         const u8 *supp_rates;
388 
389         unsigned long timeout;
390         int tries;
391 
392         u16 capability;
393         u8 prev_bssid[ETH_ALEN];
394         u8 ssid[IEEE80211_MAX_SSID_LEN];
395         u8 ssid_len;
396         u8 supp_rates_len;
397         bool wmm, uapsd;
398         bool need_beacon;
399         bool synced;
400         bool timeout_started;
401 
402         u8 ap_ht_param;
403 
404         struct ieee80211_vht_cap ap_vht_cap;
405 
406         u8 fils_nonces[2 * FILS_NONCE_LEN];
407         u8 fils_kek[FILS_MAX_KEK_LEN];
408         size_t fils_kek_len;
409 
410         size_t ie_len;
411         u8 ie[];
412 };
413 
414 struct ieee80211_sta_tx_tspec {
415         /* timestamp of the first packet in the time slice */
416         unsigned long time_slice_start;
417 
418         u32 admitted_time; /* in usecs, unlike over the air */
419         u8 tsid;
420         s8 up; /* signed to be able to invalidate with -1 during teardown */
421 
422         /* consumed TX time in microseconds in the time slice */
423         u32 consumed_tx_time;
424         enum {
425                 TX_TSPEC_ACTION_NONE = 0,
426                 TX_TSPEC_ACTION_DOWNGRADE,
427                 TX_TSPEC_ACTION_STOP_DOWNGRADE,
428         } action;
429         bool downgraded;
430 };
431 
432 DECLARE_EWMA(beacon_signal, 4, 4)
433 
434 struct ieee80211_if_managed {
435         struct timer_list timer;
436         struct timer_list conn_mon_timer;
437         struct timer_list bcn_mon_timer;
438         struct timer_list chswitch_timer;
439         struct work_struct monitor_work;
440         struct work_struct chswitch_work;
441         struct work_struct beacon_connection_loss_work;
442         struct work_struct csa_connection_drop_work;
443 
444         unsigned long beacon_timeout;
445         unsigned long probe_timeout;
446         int probe_send_count;
447         bool nullfunc_failed;
448         bool connection_loss;
449 
450         struct cfg80211_bss *associated;
451         struct ieee80211_mgd_auth_data *auth_data;
452         struct ieee80211_mgd_assoc_data *assoc_data;
453 
454         u8 bssid[ETH_ALEN] __aligned(2);
455 
456         u16 aid;
457 
458         bool powersave; /* powersave requested for this iface */
459         bool broken_ap; /* AP is broken -- turn off powersave */
460         bool have_beacon;
461         u8 dtim_period;
462         enum ieee80211_smps_mode req_smps, /* requested smps mode */
463                                  driver_smps_mode; /* smps mode request */
464 
465         struct work_struct request_smps_work;
466 
467         unsigned int flags;
468 
469         bool csa_waiting_bcn;
470         bool csa_ignored_same_chan;
471 
472         bool beacon_crc_valid;
473         u32 beacon_crc;
474 
475         bool status_acked;
476         bool status_received;
477         __le16 status_fc;
478 
479         enum {
480                 IEEE80211_MFP_DISABLED,
481                 IEEE80211_MFP_OPTIONAL,
482                 IEEE80211_MFP_REQUIRED
483         } mfp; /* management frame protection */
484 
485         /*
486          * Bitmask of enabled u-apsd queues,
487          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
488          * to take effect.
489          */
490         unsigned int uapsd_queues;
491 
492         /*
493          * Maximum number of buffered frames AP can deliver during a
494          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
495          * Needs a new association to take effect.
496          */
497         unsigned int uapsd_max_sp_len;
498 
499         int wmm_last_param_set;
500 
501         u8 use_4addr;
502 
503         s16 p2p_noa_index;
504 
505         struct ewma_beacon_signal ave_beacon_signal;
506 
507         /*
508          * Number of Beacon frames used in ave_beacon_signal. This can be used
509          * to avoid generating less reliable cqm events that would be based
510          * only on couple of received frames.
511          */
512         unsigned int count_beacon_signal;
513 
514         /* Number of times beacon loss was invoked. */
515         unsigned int beacon_loss_count;
516 
517         /*
518          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
519          * that triggered a cqm event. 0 indicates that no event has been
520          * generated for the current association.
521          */
522         int last_cqm_event_signal;
523 
524         /*
525          * State variables for keeping track of RSSI of the AP currently
526          * connected to and informing driver when RSSI has gone
527          * below/above a certain threshold.
528          */
529         int rssi_min_thold, rssi_max_thold;
530         int last_ave_beacon_signal;
531 
532         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
533         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
534         struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
535         struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
536 
537         /* TDLS support */
538         u8 tdls_peer[ETH_ALEN] __aligned(2);
539         struct delayed_work tdls_peer_del_work;
540         struct sk_buff *orig_teardown_skb; /* The original teardown skb */
541         struct sk_buff *teardown_skb; /* A copy to send through the AP */
542         spinlock_t teardown_lock; /* To lock changing teardown_skb */
543         bool tdls_chan_switch_prohibited;
544         bool tdls_wider_bw_prohibited;
545 
546         /* WMM-AC TSPEC support */
547         struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
548         /* Use a separate work struct so that we can do something here
549          * while the sdata->work is flushing the queues, for example.
550          * otherwise, in scenarios where we hardly get any traffic out
551          * on the BE queue, but there's a lot of VO traffic, we might
552          * get stuck in a downgraded situation and flush takes forever.
553          */
554         struct delayed_work tx_tspec_wk;
555 };
556 
557 struct ieee80211_if_ibss {
558         struct timer_list timer;
559         struct work_struct csa_connection_drop_work;
560 
561         unsigned long last_scan_completed;
562 
563         u32 basic_rates;
564 
565         bool fixed_bssid;
566         bool fixed_channel;
567         bool privacy;
568 
569         bool control_port;
570         bool userspace_handles_dfs;
571 
572         u8 bssid[ETH_ALEN] __aligned(2);
573         u8 ssid[IEEE80211_MAX_SSID_LEN];
574         u8 ssid_len, ie_len;
575         u8 *ie;
576         struct cfg80211_chan_def chandef;
577 
578         unsigned long ibss_join_req;
579         /* probe response/beacon for IBSS */
580         struct beacon_data __rcu *presp;
581 
582         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
583         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
584 
585         spinlock_t incomplete_lock;
586         struct list_head incomplete_stations;
587 
588         enum {
589                 IEEE80211_IBSS_MLME_SEARCH,
590                 IEEE80211_IBSS_MLME_JOINED,
591         } state;
592 };
593 
594 /**
595  * struct ieee80211_if_ocb - OCB mode state
596  *
597  * @housekeeping_timer: timer for periodic invocation of a housekeeping task
598  * @wrkq_flags: OCB deferred task action
599  * @incomplete_lock: delayed STA insertion lock
600  * @incomplete_stations: list of STAs waiting for delayed insertion
601  * @joined: indication if the interface is connected to an OCB network
602  */
603 struct ieee80211_if_ocb {
604         struct timer_list housekeeping_timer;
605         unsigned long wrkq_flags;
606 
607         spinlock_t incomplete_lock;
608         struct list_head incomplete_stations;
609 
610         bool joined;
611 };
612 
613 /**
614  * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
615  *
616  * these declarations define the interface, which enables
617  * vendor-specific mesh synchronization
618  *
619  */
620 struct ieee802_11_elems;
621 struct ieee80211_mesh_sync_ops {
622         void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
623                              u16 stype,
624                              struct ieee80211_mgmt *mgmt,
625                              struct ieee802_11_elems *elems,
626                              struct ieee80211_rx_status *rx_status);
627 
628         /* should be called with beacon_data under RCU read lock */
629         void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
630                            struct beacon_data *beacon);
631         /* add other framework functions here */
632 };
633 
634 struct mesh_csa_settings {
635         struct rcu_head rcu_head;
636         struct cfg80211_csa_settings settings;
637 };
638 
639 struct ieee80211_if_mesh {
640         struct timer_list housekeeping_timer;
641         struct timer_list mesh_path_timer;
642         struct timer_list mesh_path_root_timer;
643 
644         unsigned long wrkq_flags;
645         unsigned long mbss_changed;
646 
647         bool userspace_handles_dfs;
648 
649         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
650         size_t mesh_id_len;
651         /* Active Path Selection Protocol Identifier */
652         u8 mesh_pp_id;
653         /* Active Path Selection Metric Identifier */
654         u8 mesh_pm_id;
655         /* Congestion Control Mode Identifier */
656         u8 mesh_cc_id;
657         /* Synchronization Protocol Identifier */
658         u8 mesh_sp_id;
659         /* Authentication Protocol Identifier */
660         u8 mesh_auth_id;
661         /* Local mesh Sequence Number */
662         u32 sn;
663         /* Last used PREQ ID */
664         u32 preq_id;
665         atomic_t mpaths;
666         /* Timestamp of last SN update */
667         unsigned long last_sn_update;
668         /* Time when it's ok to send next PERR */
669         unsigned long next_perr;
670         /* Timestamp of last PREQ sent */
671         unsigned long last_preq;
672         struct mesh_rmc *rmc;
673         spinlock_t mesh_preq_queue_lock;
674         struct mesh_preq_queue preq_queue;
675         int preq_queue_len;
676         struct mesh_stats mshstats;
677         struct mesh_config mshcfg;
678         atomic_t estab_plinks;
679         u32 mesh_seqnum;
680         bool accepting_plinks;
681         int num_gates;
682         struct beacon_data __rcu *beacon;
683         const u8 *ie;
684         u8 ie_len;
685         enum {
686                 IEEE80211_MESH_SEC_NONE = 0x0,
687                 IEEE80211_MESH_SEC_AUTHED = 0x1,
688                 IEEE80211_MESH_SEC_SECURED = 0x2,
689         } security;
690         bool user_mpm;
691         /* Extensible Synchronization Framework */
692         const struct ieee80211_mesh_sync_ops *sync_ops;
693         s64 sync_offset_clockdrift_max;
694         spinlock_t sync_offset_lock;
695         /* mesh power save */
696         enum nl80211_mesh_power_mode nonpeer_pm;
697         int ps_peers_light_sleep;
698         int ps_peers_deep_sleep;
699         struct ps_data ps;
700         /* Channel Switching Support */
701         struct mesh_csa_settings __rcu *csa;
702         enum {
703                 IEEE80211_MESH_CSA_ROLE_NONE,
704                 IEEE80211_MESH_CSA_ROLE_INIT,
705                 IEEE80211_MESH_CSA_ROLE_REPEATER,
706         } csa_role;
707         u8 chsw_ttl;
708         u16 pre_value;
709 
710         /* offset from skb->data while building IE */
711         int meshconf_offset;
712 
713         struct mesh_table *mesh_paths;
714         struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */
715         int mesh_paths_generation;
716         int mpp_paths_generation;
717 };
718 
719 #ifdef CONFIG_MAC80211_MESH
720 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
721         do { (msh)->mshstats.name++; } while (0)
722 #else
723 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
724         do { } while (0)
725 #endif
726 
727 /**
728  * enum ieee80211_sub_if_data_flags - virtual interface flags
729  *
730  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
731  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
732  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
733  *      associated stations and deliver multicast frames both
734  *      back to wireless media and to the local net stack.
735  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
736  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
737  */
738 enum ieee80211_sub_if_data_flags {
739         IEEE80211_SDATA_ALLMULTI                = BIT(0),
740         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
741         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
742         IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
743         IEEE80211_SDATA_IN_DRIVER               = BIT(5),
744 };
745 
746 /**
747  * enum ieee80211_sdata_state_bits - virtual interface state bits
748  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
749  *      mirrors netif_running() but is separate for interface type
750  *      change handling while the interface is up
751  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
752  *      mode, so queues are stopped
753  * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
754  *      to offchannel, reset when offchannel returns
755  */
756 enum ieee80211_sdata_state_bits {
757         SDATA_STATE_RUNNING,
758         SDATA_STATE_OFFCHANNEL,
759         SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
760 };
761 
762 /**
763  * enum ieee80211_chanctx_mode - channel context configuration mode
764  *
765  * @IEEE80211_CHANCTX_SHARED: channel context may be used by
766  *      multiple interfaces
767  * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
768  *      only by a single interface. This can be used for example for
769  *      non-fixed channel IBSS.
770  */
771 enum ieee80211_chanctx_mode {
772         IEEE80211_CHANCTX_SHARED,
773         IEEE80211_CHANCTX_EXCLUSIVE
774 };
775 
776 /**
777  * enum ieee80211_chanctx_replace_state - channel context replacement state
778  *
779  * This is used for channel context in-place reservations that require channel
780  * context switch/swap.
781  *
782  * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
783  * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
784  *      by a (not yet registered) channel context pointed by %replace_ctx.
785  * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
786  *      replaces an existing channel context pointed to by %replace_ctx.
787  */
788 enum ieee80211_chanctx_replace_state {
789         IEEE80211_CHANCTX_REPLACE_NONE,
790         IEEE80211_CHANCTX_WILL_BE_REPLACED,
791         IEEE80211_CHANCTX_REPLACES_OTHER,
792 };
793 
794 struct ieee80211_chanctx {
795         struct list_head list;
796         struct rcu_head rcu_head;
797 
798         struct list_head assigned_vifs;
799         struct list_head reserved_vifs;
800 
801         enum ieee80211_chanctx_replace_state replace_state;
802         struct ieee80211_chanctx *replace_ctx;
803 
804         enum ieee80211_chanctx_mode mode;
805         bool driver_present;
806 
807         struct ieee80211_chanctx_conf conf;
808 };
809 
810 struct mac80211_qos_map {
811         struct cfg80211_qos_map qos_map;
812         struct rcu_head rcu_head;
813 };
814 
815 enum txq_info_flags {
816         IEEE80211_TXQ_STOP,
817         IEEE80211_TXQ_AMPDU,
818         IEEE80211_TXQ_NO_AMSDU,
819 };
820 
821 /**
822  * struct txq_info - per tid queue
823  *
824  * @tin: contains packets split into multiple flows
825  * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
826  *      a fq_flow which is already owned by a different tin
827  * @def_cvars: codel vars for @def_flow
828  * @frags: used to keep fragments created after dequeue
829  */
830 struct txq_info {
831         struct fq_tin tin;
832         struct fq_flow def_flow;
833         struct codel_vars def_cvars;
834         struct codel_stats cstats;
835         struct sk_buff_head frags;
836         unsigned long flags;
837 
838         /* keep last! */
839         struct ieee80211_txq txq;
840 };
841 
842 struct ieee80211_if_mntr {
843         u32 flags;
844         u8 mu_follow_addr[ETH_ALEN] __aligned(2);
845 
846         struct list_head list;
847 };
848 
849 /**
850  * struct ieee80211_if_nan - NAN state
851  *
852  * @conf: current NAN configuration
853  * @func_ids: a bitmap of available instance_id's
854  */
855 struct ieee80211_if_nan {
856         struct cfg80211_nan_conf conf;
857 
858         /* protects function_inst_ids */
859         spinlock_t func_lock;
860         struct idr function_inst_ids;
861 };
862 
863 struct ieee80211_sub_if_data {
864         struct list_head list;
865 
866         struct wireless_dev wdev;
867 
868         /* keys */
869         struct list_head key_list;
870 
871         /* count for keys needing tailroom space allocation */
872         int crypto_tx_tailroom_needed_cnt;
873         int crypto_tx_tailroom_pending_dec;
874         struct delayed_work dec_tailroom_needed_wk;
875 
876         struct net_device *dev;
877         struct ieee80211_local *local;
878 
879         unsigned int flags;
880 
881         unsigned long state;
882 
883         char name[IFNAMSIZ];
884 
885         /* Fragment table for host-based reassembly */
886         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
887         unsigned int fragment_next;
888 
889         /* TID bitmap for NoAck policy */
890         u16 noack_map;
891 
892         /* bit field of ACM bits (BIT(802.1D tag)) */
893         u8 wmm_acm;
894 
895         struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
896         struct ieee80211_key __rcu *default_unicast_key;
897         struct ieee80211_key __rcu *default_multicast_key;
898         struct ieee80211_key __rcu *default_mgmt_key;
899 
900         u16 sequence_number;
901         __be16 control_port_protocol;
902         bool control_port_no_encrypt;
903         bool control_port_over_nl80211;
904         int encrypt_headroom;
905 
906         atomic_t num_tx_queued;
907         struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
908         struct mac80211_qos_map __rcu *qos_map;
909 
910         struct work_struct csa_finalize_work;
911         bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
912         struct cfg80211_chan_def csa_chandef;
913 
914         struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
915         struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
916 
917         /* context reservation -- protected with chanctx_mtx */
918         struct ieee80211_chanctx *reserved_chanctx;
919         struct cfg80211_chan_def reserved_chandef;
920         bool reserved_radar_required;
921         bool reserved_ready;
922 
923         /* used to reconfigure hardware SM PS */
924         struct work_struct recalc_smps;
925 
926         struct work_struct work;
927         struct sk_buff_head skb_queue;
928 
929         u8 needed_rx_chains;
930         enum ieee80211_smps_mode smps_mode;
931 
932         int user_power_level; /* in dBm */
933         int ap_power_level; /* in dBm */
934 
935         bool radar_required;
936         struct delayed_work dfs_cac_timer_work;
937 
938         /*
939          * AP this belongs to: self in AP mode and
940          * corresponding AP in VLAN mode, NULL for
941          * all others (might be needed later in IBSS)
942          */
943         struct ieee80211_if_ap *bss;
944 
945         /* bitmap of allowed (non-MCS) rate indexes for rate control */
946         u32 rc_rateidx_mask[NUM_NL80211_BANDS];
947 
948         bool rc_has_mcs_mask[NUM_NL80211_BANDS];
949         u8  rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
950 
951         bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
952         u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
953 
954         union {
955                 struct ieee80211_if_ap ap;
956                 struct ieee80211_if_wds wds;
957                 struct ieee80211_if_vlan vlan;
958                 struct ieee80211_if_managed mgd;
959                 struct ieee80211_if_ibss ibss;
960                 struct ieee80211_if_mesh mesh;
961                 struct ieee80211_if_ocb ocb;
962                 struct ieee80211_if_mntr mntr;
963                 struct ieee80211_if_nan nan;
964         } u;
965 
966 #ifdef CONFIG_MAC80211_DEBUGFS
967         struct {
968                 struct dentry *subdir_stations;
969                 struct dentry *default_unicast_key;
970                 struct dentry *default_multicast_key;
971                 struct dentry *default_mgmt_key;
972         } debugfs;
973 #endif
974 
975         /* must be last, dynamically sized area in this! */
976         struct ieee80211_vif vif;
977 };
978 
979 static inline
980 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
981 {
982         return container_of(p, struct ieee80211_sub_if_data, vif);
983 }
984 
985 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
986         __acquires(&sdata->wdev.mtx)
987 {
988         mutex_lock(&sdata->wdev.mtx);
989         __acquire(&sdata->wdev.mtx);
990 }
991 
992 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
993         __releases(&sdata->wdev.mtx)
994 {
995         mutex_unlock(&sdata->wdev.mtx);
996         __release(&sdata->wdev.mtx);
997 }
998 
999 #define sdata_dereference(p, sdata) \
1000         rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
1001 
1002 static inline void
1003 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
1004 {
1005         lockdep_assert_held(&sdata->wdev.mtx);
1006 }
1007 
1008 static inline int
1009 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1010 {
1011         switch (chandef->width) {
1012         case NL80211_CHAN_WIDTH_5:
1013                 return 2;
1014         case NL80211_CHAN_WIDTH_10:
1015                 return 1;
1016         default:
1017                 return 0;
1018         }
1019 }
1020 
1021 static inline int
1022 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1023 {
1024         struct ieee80211_chanctx_conf *chanctx_conf;
1025         int shift = 0;
1026 
1027         rcu_read_lock();
1028         chanctx_conf = rcu_dereference(vif->chanctx_conf);
1029         if (chanctx_conf)
1030                 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1031         rcu_read_unlock();
1032 
1033         return shift;
1034 }
1035 
1036 enum {
1037         IEEE80211_RX_MSG        = 1,
1038         IEEE80211_TX_STATUS_MSG = 2,
1039 };
1040 
1041 enum queue_stop_reason {
1042         IEEE80211_QUEUE_STOP_REASON_DRIVER,
1043         IEEE80211_QUEUE_STOP_REASON_PS,
1044         IEEE80211_QUEUE_STOP_REASON_CSA,
1045         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1046         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1047         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1048         IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1049         IEEE80211_QUEUE_STOP_REASON_FLUSH,
1050         IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1051         IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1052 
1053         IEEE80211_QUEUE_STOP_REASONS,
1054 };
1055 
1056 #ifdef CONFIG_MAC80211_LEDS
1057 struct tpt_led_trigger {
1058         char name[32];
1059         const struct ieee80211_tpt_blink *blink_table;
1060         unsigned int blink_table_len;
1061         struct timer_list timer;
1062         struct ieee80211_local *local;
1063         unsigned long prev_traffic;
1064         unsigned long tx_bytes, rx_bytes;
1065         unsigned int active, want;
1066         bool running;
1067 };
1068 #endif
1069 
1070 /**
1071  * mac80211 scan flags - currently active scan mode
1072  *
1073  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1074  *      well be on the operating channel
1075  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1076  *      determine if we are on the operating channel or not
1077  * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
1078  *      channel. This should not interrupt normal traffic.
1079  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1080  *      that the scan completed.
1081  * @SCAN_ABORTED: Set for our scan work function when the driver reported
1082  *      a scan complete for an aborted scan.
1083  * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1084  *      cancelled.
1085  */
1086 enum {
1087         SCAN_SW_SCANNING,
1088         SCAN_HW_SCANNING,
1089         SCAN_ONCHANNEL_SCANNING,
1090         SCAN_COMPLETED,
1091         SCAN_ABORTED,
1092         SCAN_HW_CANCELLED,
1093 };
1094 
1095 /**
1096  * enum mac80211_scan_state - scan state machine states
1097  *
1098  * @SCAN_DECISION: Main entry point to the scan state machine, this state
1099  *      determines if we should keep on scanning or switch back to the
1100  *      operating channel
1101  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1102  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1103  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1104  *      send out data
1105  * @SCAN_RESUME: Resume the scan and scan the next channel
1106  * @SCAN_ABORT: Abort the scan and go back to operating channel
1107  */
1108 enum mac80211_scan_state {
1109         SCAN_DECISION,
1110         SCAN_SET_CHANNEL,
1111         SCAN_SEND_PROBE,
1112         SCAN_SUSPEND,
1113         SCAN_RESUME,
1114         SCAN_ABORT,
1115 };
1116 
1117 struct ieee80211_local {
1118         /* embed the driver visible part.
1119          * don't cast (use the static inlines below), but we keep
1120          * it first anyway so they become a no-op */
1121         struct ieee80211_hw hw;
1122 
1123         struct fq fq;
1124         struct codel_vars *cvars;
1125         struct codel_params cparams;
1126 
1127         const struct ieee80211_ops *ops;
1128 
1129         /*
1130          * private workqueue to mac80211. mac80211 makes this accessible
1131          * via ieee80211_queue_work()
1132          */
1133         struct workqueue_struct *workqueue;
1134 
1135         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1136         int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1137         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1138         spinlock_t queue_stop_reason_lock;
1139 
1140         int open_count;
1141         int monitors, cooked_mntrs;
1142         /* number of interfaces with corresponding FIF_ flags */
1143         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1144             fif_probe_req;
1145         int probe_req_reg;
1146         unsigned int filter_flags; /* FIF_* */
1147 
1148         bool wiphy_ciphers_allocated;
1149 
1150         bool use_chanctx;
1151 
1152         /* protects the aggregated multicast list and filter calls */
1153         spinlock_t filter_lock;
1154 
1155         /* used for uploading changed mc list */
1156         struct work_struct reconfig_filter;
1157 
1158         /* aggregated multicast list */
1159         struct netdev_hw_addr_list mc_list;
1160 
1161         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1162 
1163         /*
1164          * suspended is true if we finished all the suspend _and_ we have
1165          * not yet come up from resume. This is to be used by mac80211
1166          * to ensure driver sanity during suspend and mac80211's own
1167          * sanity. It can eventually be used for WoW as well.
1168          */
1169         bool suspended;
1170 
1171         /*
1172          * Resuming is true while suspended, but when we're reprogramming the
1173          * hardware -- at that time it's allowed to use ieee80211_queue_work()
1174          * again even though some other parts of the stack are still suspended
1175          * and we still drop received frames to avoid waking the stack.
1176          */
1177         bool resuming;
1178 
1179         /*
1180          * quiescing is true during the suspend process _only_ to
1181          * ease timer cancelling etc.
1182          */
1183         bool quiescing;
1184 
1185         /* device is started */
1186         bool started;
1187 
1188         /* device is during a HW reconfig */
1189         bool in_reconfig;
1190 
1191         /* wowlan is enabled -- don't reconfig on resume */
1192         bool wowlan;
1193 
1194         struct work_struct radar_detected_work;
1195 
1196         /* number of RX chains the hardware has */
1197         u8 rx_chains;
1198 
1199         int tx_headroom; /* required headroom for hardware/radiotap */
1200 
1201         /* Tasklet and skb queue to process calls from IRQ mode. All frames
1202          * added to skb_queue will be processed, but frames in
1203          * skb_queue_unreliable may be dropped if the total length of these
1204          * queues increases over the limit. */
1205 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1206         struct tasklet_struct tasklet;
1207         struct sk_buff_head skb_queue;
1208         struct sk_buff_head skb_queue_unreliable;
1209 
1210         spinlock_t rx_path_lock;
1211 
1212         /* Station data */
1213         /*
1214          * The mutex only protects the list, hash table and
1215          * counter, reads are done with RCU.
1216          */
1217         struct mutex sta_mtx;
1218         spinlock_t tim_lock;
1219         unsigned long num_sta;
1220         struct list_head sta_list;
1221         struct rhltable sta_hash;
1222         struct timer_list sta_cleanup;
1223         int sta_generation;
1224 
1225         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1226         struct tasklet_struct tx_pending_tasklet;
1227 
1228         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1229 
1230         /* number of interfaces with allmulti RX */
1231         atomic_t iff_allmultis;
1232 
1233         struct rate_control_ref *rate_ctrl;
1234 
1235         struct crypto_cipher *wep_tx_tfm;
1236         struct crypto_cipher *wep_rx_tfm;
1237         u32 wep_iv;
1238 
1239         /* see iface.c */
1240         struct list_head interfaces;
1241         struct list_head mon_list; /* only that are IFF_UP && !cooked */
1242         struct mutex iflist_mtx;
1243 
1244         /*
1245          * Key mutex, protects sdata's key_list and sta_info's
1246          * key pointers (write access, they're RCU.)
1247          */
1248         struct mutex key_mtx;
1249 
1250         /* mutex for scan and work locking */
1251         struct mutex mtx;
1252 
1253         /* Scanning and BSS list */
1254         unsigned long scanning;
1255         struct cfg80211_ssid scan_ssid;
1256         struct cfg80211_scan_request *int_scan_req;
1257         struct cfg80211_scan_request __rcu *scan_req;
1258         struct ieee80211_scan_request *hw_scan_req;
1259         struct cfg80211_chan_def scan_chandef;
1260         enum nl80211_band hw_scan_band;
1261         int scan_channel_idx;
1262         int scan_ies_len;
1263         int hw_scan_ies_bufsize;
1264         struct cfg80211_scan_info scan_info;
1265 
1266         struct work_struct sched_scan_stopped_work;
1267         struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1268         struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1269         u8 scan_addr[ETH_ALEN];
1270 
1271         unsigned long leave_oper_channel_time;
1272         enum mac80211_scan_state next_scan_state;
1273         struct delayed_work scan_work;
1274         struct ieee80211_sub_if_data __rcu *scan_sdata;
1275         /* For backward compatibility only -- do not use */
1276         struct cfg80211_chan_def _oper_chandef;
1277 
1278         /* Temporary remain-on-channel for off-channel operations */
1279         struct ieee80211_channel *tmp_channel;
1280 
1281         /* channel contexts */
1282         struct list_head chanctx_list;
1283         struct mutex chanctx_mtx;
1284 
1285 #ifdef CONFIG_MAC80211_LEDS
1286         struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1287         struct led_trigger tpt_led;
1288         atomic_t tx_led_active, rx_led_active, assoc_led_active;
1289         atomic_t radio_led_active, tpt_led_active;
1290         struct tpt_led_trigger *tpt_led_trigger;
1291 #endif
1292 
1293 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1294         /* SNMP counters */
1295         /* dot11CountersTable */
1296         u32 dot11TransmittedFragmentCount;
1297         u32 dot11MulticastTransmittedFrameCount;
1298         u32 dot11FailedCount;
1299         u32 dot11RetryCount;
1300         u32 dot11MultipleRetryCount;
1301         u32 dot11FrameDuplicateCount;
1302         u32 dot11ReceivedFragmentCount;
1303         u32 dot11MulticastReceivedFrameCount;
1304         u32 dot11TransmittedFrameCount;
1305 
1306         /* TX/RX handler statistics */
1307         unsigned int tx_handlers_drop;
1308         unsigned int tx_handlers_queued;
1309         unsigned int tx_handlers_drop_wep;
1310         unsigned int tx_handlers_drop_not_assoc;
1311         unsigned int tx_handlers_drop_unauth_port;
1312         unsigned int rx_handlers_drop;
1313         unsigned int rx_handlers_queued;
1314         unsigned int rx_handlers_drop_nullfunc;
1315         unsigned int rx_handlers_drop_defrag;
1316         unsigned int tx_expand_skb_head;
1317         unsigned int tx_expand_skb_head_cloned;
1318         unsigned int rx_expand_skb_head_defrag;
1319         unsigned int rx_handlers_fragments;
1320         unsigned int tx_status_drop;
1321 #define I802_DEBUG_INC(c) (c)++
1322 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1323 #define I802_DEBUG_INC(c) do { } while (0)
1324 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1325 
1326 
1327         int total_ps_buffered; /* total number of all buffered unicast and
1328                                 * multicast packets for power saving stations
1329                                 */
1330 
1331         bool pspolling;
1332         bool offchannel_ps_enabled;
1333         /*
1334          * PS can only be enabled when we have exactly one managed
1335          * interface (and monitors) in PS, this then points there.
1336          */
1337         struct ieee80211_sub_if_data *ps_sdata;
1338         struct work_struct dynamic_ps_enable_work;
1339         struct work_struct dynamic_ps_disable_work;
1340         struct timer_list dynamic_ps_timer;
1341         struct notifier_block ifa_notifier;
1342         struct notifier_block ifa6_notifier;
1343 
1344         /*
1345          * The dynamic ps timeout configured from user space via WEXT -
1346          * this will override whatever chosen by mac80211 internally.
1347          */
1348         int dynamic_ps_forced_timeout;
1349 
1350         int user_power_level; /* in dBm, for all interfaces */
1351 
1352         enum ieee80211_smps_mode smps_mode;
1353 
1354         struct work_struct restart_work;
1355 
1356 #ifdef CONFIG_MAC80211_DEBUGFS
1357         struct local_debugfsdentries {
1358                 struct dentry *rcdir;
1359                 struct dentry *keys;
1360         } debugfs;
1361 #endif
1362 
1363         /*
1364          * Remain-on-channel support
1365          */
1366         struct delayed_work roc_work;
1367         struct list_head roc_list;
1368         struct work_struct hw_roc_start, hw_roc_done;
1369         unsigned long hw_roc_start_time;
1370         u64 roc_cookie_counter;
1371 
1372         struct idr ack_status_frames;
1373         spinlock_t ack_status_lock;
1374 
1375         struct ieee80211_sub_if_data __rcu *p2p_sdata;
1376 
1377         /* virtual monitor interface */
1378         struct ieee80211_sub_if_data __rcu *monitor_sdata;
1379         struct cfg80211_chan_def monitor_chandef;
1380 
1381         /* extended capabilities provided by mac80211 */
1382         u8 ext_capa[8];
1383 
1384         /* TDLS channel switch */
1385         struct work_struct tdls_chsw_work;
1386         struct sk_buff_head skb_queue_tdls_chsw;
1387 };
1388 
1389 static inline struct ieee80211_sub_if_data *
1390 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1391 {
1392         return netdev_priv(dev);
1393 }
1394 
1395 static inline struct ieee80211_sub_if_data *
1396 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1397 {
1398         return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1399 }
1400 
1401 static inline struct ieee80211_supported_band *
1402 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1403 {
1404         struct ieee80211_local *local = sdata->local;
1405         struct ieee80211_chanctx_conf *chanctx_conf;
1406         enum nl80211_band band;
1407 
1408         rcu_read_lock();
1409         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1410 
1411         if (WARN_ON(!chanctx_conf)) {
1412                 rcu_read_unlock();
1413                 return NULL;
1414         }
1415 
1416         band = chanctx_conf->def.chan->band;
1417         rcu_read_unlock();
1418 
1419         return local->hw.wiphy->bands[band];
1420 }
1421 
1422 /* this struct holds the value parsing from channel switch IE  */
1423 struct ieee80211_csa_ie {
1424         struct cfg80211_chan_def chandef;
1425         u8 mode;
1426         u8 count;
1427         u8 ttl;
1428         u16 pre_value;
1429         u16 reason_code;
1430 };
1431 
1432 /* Parsed Information Elements */
1433 struct ieee802_11_elems {
1434         const u8 *ie_start;
1435         size_t total_len;
1436 
1437         /* pointers to IEs */
1438         const struct ieee80211_tdls_lnkie *lnk_id;
1439         const struct ieee80211_ch_switch_timing *ch_sw_timing;
1440         const u8 *ext_capab;
1441         const u8 *ssid;
1442         const u8 *supp_rates;
1443         const u8 *ds_params;
1444         const struct ieee80211_tim_ie *tim;
1445         const u8 *challenge;
1446         const u8 *rsn;
1447         const u8 *erp_info;
1448         const u8 *ext_supp_rates;
1449         const u8 *wmm_info;
1450         const u8 *wmm_param;
1451         const struct ieee80211_ht_cap *ht_cap_elem;
1452         const struct ieee80211_ht_operation *ht_operation;
1453         const struct ieee80211_vht_cap *vht_cap_elem;
1454         const struct ieee80211_vht_operation *vht_operation;
1455         const struct ieee80211_meshconf_ie *mesh_config;
1456         const u8 *mesh_id;
1457         const u8 *peering;
1458         const __le16 *awake_window;
1459         const u8 *preq;
1460         const u8 *prep;
1461         const u8 *perr;
1462         const struct ieee80211_rann_ie *rann;
1463         const struct ieee80211_channel_sw_ie *ch_switch_ie;
1464         const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1465         const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1466         const u8 *country_elem;
1467         const u8 *pwr_constr_elem;
1468         const u8 *cisco_dtpc_elem;
1469         const struct ieee80211_timeout_interval_ie *timeout_int;
1470         const u8 *opmode_notif;
1471         const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1472         struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1473         const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1474 
1475         /* length of them, respectively */
1476         u8 ext_capab_len;
1477         u8 ssid_len;
1478         u8 supp_rates_len;
1479         u8 tim_len;
1480         u8 challenge_len;
1481         u8 rsn_len;
1482         u8 ext_supp_rates_len;
1483         u8 wmm_info_len;
1484         u8 wmm_param_len;
1485         u8 mesh_id_len;
1486         u8 peering_len;
1487         u8 preq_len;
1488         u8 prep_len;
1489         u8 perr_len;
1490         u8 country_elem_len;
1491 
1492         /* whether a parse error occurred while retrieving these elements */
1493         bool parse_error;
1494 };
1495 
1496 static inline struct ieee80211_local *hw_to_local(
1497         struct ieee80211_hw *hw)
1498 {
1499         return container_of(hw, struct ieee80211_local, hw);
1500 }
1501 
1502 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1503 {
1504         return container_of(txq, struct txq_info, txq);
1505 }
1506 
1507 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1508 {
1509         struct txq_info *txqi = to_txq_info(txq);
1510 
1511         return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1512 }
1513 
1514 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1515 {
1516         return ether_addr_equal(raddr, addr) ||
1517                is_broadcast_ether_addr(raddr);
1518 }
1519 
1520 static inline bool
1521 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1522 {
1523         WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1524                      status->flag & RX_FLAG_MACTIME_END);
1525         if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END))
1526                 return true;
1527         /* can't handle non-legacy preamble yet */
1528         if (status->flag & RX_FLAG_MACTIME_PLCP_START &&
1529             status->encoding == RX_ENC_LEGACY)
1530                 return true;
1531         return false;
1532 }
1533 
1534 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1535 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1536 
1537 /* This function returns the number of multicast stations connected to this
1538  * interface. It returns -1 if that number is not tracked, that is for netdevs
1539  * not in AP or AP_VLAN mode or when using 4addr.
1540  */
1541 static inline int
1542 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1543 {
1544         if (sdata->vif.type == NL80211_IFTYPE_AP)
1545                 return atomic_read(&sdata->u.ap.num_mcast_sta);
1546         if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1547                 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1548         return -1;
1549 }
1550 
1551 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1552                                      struct ieee80211_rx_status *status,
1553                                      unsigned int mpdu_len,
1554                                      unsigned int mpdu_offset);
1555 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1556 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1557 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1558                                       u32 changed);
1559 void ieee80211_configure_filter(struct ieee80211_local *local);
1560 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1561 
1562 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1563 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1564                              u64 *cookie, gfp_t gfp);
1565 
1566 void ieee80211_check_fast_rx(struct sta_info *sta);
1567 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1568 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1569 void ieee80211_clear_fast_rx(struct sta_info *sta);
1570 
1571 /* STA code */
1572 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1573 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1574                        struct cfg80211_auth_request *req);
1575 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1576                         struct cfg80211_assoc_request *req);
1577 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1578                          struct cfg80211_deauth_request *req);
1579 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1580                            struct cfg80211_disassoc_request *req);
1581 void ieee80211_send_pspoll(struct ieee80211_local *local,
1582                            struct ieee80211_sub_if_data *sdata);
1583 void ieee80211_recalc_ps(struct ieee80211_local *local);
1584 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1585 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1586 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1587 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1588                                   struct sk_buff *skb);
1589 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1590 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1591 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1592 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1593                                   __le16 fc, bool acked);
1594 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1595 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1596 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1597 
1598 /* IBSS code */
1599 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1600 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1601 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1602                               const u8 *bssid, const u8 *addr, u32 supp_rates);
1603 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1604                         struct cfg80211_ibss_params *params);
1605 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1606 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1607 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1608                                    struct sk_buff *skb);
1609 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1610                               struct cfg80211_csa_settings *csa_settings);
1611 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1612 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1613 
1614 /* OCB code */
1615 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1616 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1617                              const u8 *bssid, const u8 *addr, u32 supp_rates);
1618 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1619 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1620                        struct ocb_setup *setup);
1621 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1622 
1623 /* mesh code */
1624 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1625 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1626                                    struct sk_buff *skb);
1627 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1628                               struct cfg80211_csa_settings *csa_settings);
1629 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1630 
1631 /* scan/BSS handling */
1632 void ieee80211_scan_work(struct work_struct *work);
1633 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1634                                 const u8 *ssid, u8 ssid_len,
1635                                 struct ieee80211_channel **channels,
1636                                 unsigned int n_channels,
1637                                 enum nl80211_bss_scan_width scan_width);
1638 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1639                            struct cfg80211_scan_request *req);
1640 void ieee80211_scan_cancel(struct ieee80211_local *local);
1641 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1642 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1643 
1644 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1645 struct ieee80211_bss *
1646 ieee80211_bss_info_update(struct ieee80211_local *local,
1647                           struct ieee80211_rx_status *rx_status,
1648                           struct ieee80211_mgmt *mgmt,
1649                           size_t len,
1650                           struct ieee802_11_elems *elems,
1651                           struct ieee80211_channel *channel);
1652 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1653                           struct ieee80211_bss *bss);
1654 
1655 /* scheduled scan handling */
1656 int
1657 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1658                                      struct cfg80211_sched_scan_request *req);
1659 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1660                                        struct cfg80211_sched_scan_request *req);
1661 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1662 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1663 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1664 
1665 /* off-channel/mgmt-tx */
1666 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1667 void ieee80211_offchannel_return(struct ieee80211_local *local);
1668 void ieee80211_roc_setup(struct ieee80211_local *local);
1669 void ieee80211_start_next_roc(struct ieee80211_local *local);
1670 void ieee80211_roc_purge(struct ieee80211_local *local,
1671                          struct ieee80211_sub_if_data *sdata);
1672 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1673                                 struct ieee80211_channel *chan,
1674                                 unsigned int duration, u64 *cookie);
1675 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1676                                        struct wireless_dev *wdev, u64 cookie);
1677 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1678                       struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1679 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1680                                   struct wireless_dev *wdev, u64 cookie);
1681 
1682 /* channel switch handling */
1683 void ieee80211_csa_finalize_work(struct work_struct *work);
1684 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1685                              struct cfg80211_csa_settings *params);
1686 
1687 /* interface handling */
1688 int ieee80211_iface_init(void);
1689 void ieee80211_iface_exit(void);
1690 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1691                      unsigned char name_assign_type,
1692                      struct wireless_dev **new_wdev, enum nl80211_iftype type,
1693                      struct vif_params *params);
1694 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1695                              enum nl80211_iftype type);
1696 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1697 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1698 u32 ieee80211_idle_off(struct ieee80211_local *local);
1699 void ieee80211_recalc_idle(struct ieee80211_local *local);
1700 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1701                                     const int offset);
1702 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1703 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1704 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1705 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1706 
1707 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1708 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1709                               bool update_bss);
1710 
1711 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1712 {
1713         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1714 }
1715 
1716 /* tx handling */
1717 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1718 void ieee80211_tx_pending(unsigned long data);
1719 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1720                                          struct net_device *dev);
1721 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1722                                        struct net_device *dev);
1723 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1724                                   struct net_device *dev,
1725                                   u32 info_flags);
1726 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1727                               struct sk_buff_head *skbs);
1728 struct sk_buff *
1729 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1730                               struct sk_buff *skb, u32 info_flags);
1731 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1732                           struct ieee80211_supported_band *sband,
1733                           int retry_count, int shift, bool send_to_cooked);
1734 
1735 void ieee80211_check_fast_xmit(struct sta_info *sta);
1736 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1737 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1738 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1739 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
1740                               const u8 *buf, size_t len,
1741                               const u8 *dest, __be16 proto, bool unencrypted);
1742 
1743 /* HT */
1744 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1745                                      struct ieee80211_sta_ht_cap *ht_cap);
1746 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1747                                        struct ieee80211_supported_band *sband,
1748                                        const struct ieee80211_ht_cap *ht_cap_ie,
1749                                        struct sta_info *sta);
1750 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1751                           const u8 *da, u16 tid,
1752                           u16 initiator, u16 reason_code);
1753 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1754                                enum ieee80211_smps_mode smps, const u8 *da,
1755                                const u8 *bssid);
1756 void ieee80211_request_smps_ap_work(struct work_struct *work);
1757 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1758 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1759                                    enum ieee80211_smps_mode smps_mode_new);
1760 
1761 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1762                                      u16 initiator, u16 reason, bool stop);
1763 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1764                                     u16 initiator, u16 reason, bool stop);
1765 void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
1766                                       u8 dialog_token, u16 timeout,
1767                                       u16 start_seq_num, u16 ba_policy, u16 tid,
1768                                       u16 buf_size, bool tx, bool auto_seq);
1769 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1770                                          enum ieee80211_agg_stop_reason reason);
1771 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1772                              struct sta_info *sta,
1773                              struct ieee80211_mgmt *mgmt, size_t len);
1774 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1775                                   struct sta_info *sta,
1776                                   struct ieee80211_mgmt *mgmt,
1777                                   size_t len);
1778 void ieee80211_process_addba_request(struct ieee80211_local *local,
1779                                      struct sta_info *sta,
1780                                      struct ieee80211_mgmt *mgmt,
1781                                      size_t len);
1782 
1783 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1784                                    enum ieee80211_agg_stop_reason reason);
1785 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1786                                     enum ieee80211_agg_stop_reason reason);
1787 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
1788                               struct tid_ampdu_tx *tid_tx);
1789 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
1790                              struct tid_ampdu_tx *tid_tx);
1791 void ieee80211_ba_session_work(struct work_struct *work);
1792 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1793 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1794 
1795 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1796 enum nl80211_smps_mode
1797 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
1798 
1799 /* VHT */
1800 void
1801 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1802                                     struct ieee80211_supported_band *sband,
1803                                     const struct ieee80211_vht_cap *vht_cap_ie,
1804                                     struct sta_info *sta);
1805 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1806 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1807 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1808 enum ieee80211_sta_rx_bandwidth
1809 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
1810 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
1811 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1812 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
1813                                  struct ieee80211_mgmt *mgmt);
1814 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1815                                   struct sta_info *sta, u8 opmode,
1816                                   enum nl80211_band band);
1817 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1818                                  struct sta_info *sta, u8 opmode,
1819                                  enum nl80211_band band);
1820 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1821                                       struct ieee80211_sta_vht_cap *vht_cap);
1822 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
1823                                      u16 vht_mask[NL80211_VHT_NSS_MAX]);
1824 enum nl80211_chan_width
1825 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta);
1826 
1827 /* Spectrum management */
1828 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1829                                        struct ieee80211_mgmt *mgmt,
1830                                        size_t len);
1831 /**
1832  * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1833  * @sdata: the sdata of the interface which has received the frame
1834  * @elems: parsed 802.11 elements received with the frame
1835  * @current_band: indicates the current band
1836  * @sta_flags: contains information about own capabilities and restrictions
1837  *      to decide which channel switch announcements can be accepted. Only the
1838  *      following subset of &enum ieee80211_sta_flags are evaluated:
1839  *      %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1840  *      %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1841  *      %IEEE80211_STA_DISABLE_160MHZ.
1842  * @bssid: the currently connected bssid (for reporting)
1843  * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1844         All of them will be filled with if success only.
1845  * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1846  */
1847 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1848                                  struct ieee802_11_elems *elems,
1849                                  enum nl80211_band current_band,
1850                                  u32 sta_flags, u8 *bssid,
1851                                  struct ieee80211_csa_ie *csa_ie);
1852 
1853 /* Suspend/resume and hw reconfiguration */
1854 int ieee80211_reconfig(struct ieee80211_local *local);
1855 void ieee80211_stop_device(struct ieee80211_local *local);
1856 
1857 int __ieee80211_suspend(struct ieee80211_hw *hw,
1858                         struct cfg80211_wowlan *wowlan);
1859 
1860 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1861 {
1862         struct ieee80211_local *local = hw_to_local(hw);
1863 
1864         WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
1865              !test_bit(SCAN_COMPLETED, &local->scanning),
1866                 "%s: resume with hardware scan still in progress\n",
1867                 wiphy_name(hw->wiphy));
1868 
1869         return ieee80211_reconfig(hw_to_local(hw));
1870 }
1871 
1872 /* utility functions/constants */
1873 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1874 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
1875                              int rate, int erp, int short_preamble,
1876                              int shift);
1877 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1878                                            struct ieee80211_tx_queue_params *qparam,
1879                                            int ac);
1880 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1881                                bool bss_notify, bool enable_qos);
1882 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
1883                     struct sta_info *sta, struct sk_buff *skb);
1884 
1885 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1886                                  struct sk_buff *skb, int tid,
1887                                  enum nl80211_band band);
1888 
1889 static inline void
1890 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1891                           struct sk_buff *skb, int tid,
1892                           enum nl80211_band band)
1893 {
1894         rcu_read_lock();
1895         __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1896         rcu_read_unlock();
1897 }
1898 
1899 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1900                                         struct sk_buff *skb, int tid)
1901 {
1902         struct ieee80211_chanctx_conf *chanctx_conf;
1903 
1904         rcu_read_lock();
1905         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1906         if (WARN_ON(!chanctx_conf)) {
1907                 rcu_read_unlock();
1908                 kfree_skb(skb);
1909                 return;
1910         }
1911 
1912         __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1913                                     chanctx_conf->def.chan->band);
1914         rcu_read_unlock();
1915 }
1916 
1917 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1918                                     struct sk_buff *skb)
1919 {
1920         /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1921         ieee80211_tx_skb_tid(sdata, skb, 7);
1922 }
1923 
1924 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1925                                struct ieee802_11_elems *elems,
1926                                u64 filter, u32 crc);
1927 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1928                                           bool action,
1929                                           struct ieee802_11_elems *elems)
1930 {
1931         ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1932 }
1933 
1934 
1935 extern const int ieee802_1d_to_ac[8];
1936 
1937 static inline int ieee80211_ac_from_tid(int tid)
1938 {
1939         return ieee802_1d_to_ac[tid & 7];
1940 }
1941 
1942 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1943 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1944 void ieee80211_dynamic_ps_timer(struct timer_list *t);
1945 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1946                              struct ieee80211_sub_if_data *sdata,
1947                              bool powersave);
1948 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1949                              struct ieee80211_hdr *hdr);
1950 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1951                              struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
1952 
1953 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1954                                      unsigned long queues,
1955                                      enum queue_stop_reason reason,
1956                                      bool refcounted);
1957 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1958                                struct ieee80211_sub_if_data *sdata,
1959                                enum queue_stop_reason reason);
1960 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1961                                struct ieee80211_sub_if_data *sdata,
1962                                enum queue_stop_reason reason);
1963 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1964                                      unsigned long queues,
1965                                      enum queue_stop_reason reason,
1966                                      bool refcounted);
1967 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1968                                     enum queue_stop_reason reason,
1969                                     bool refcounted);
1970 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1971                                     enum queue_stop_reason reason,
1972                                     bool refcounted);
1973 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1974 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1975                                struct sk_buff *skb);
1976 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1977                                 struct sk_buff_head *skbs);
1978 void ieee80211_flush_queues(struct ieee80211_local *local,
1979                             struct ieee80211_sub_if_data *sdata, bool drop);
1980 void __ieee80211_flush_queues(struct ieee80211_local *local,
1981                               struct ieee80211_sub_if_data *sdata,
1982                               unsigned int queues, bool drop);
1983 
1984 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
1985 {
1986         /*
1987          * If quiescing is set, we are racing with __ieee80211_suspend.
1988          * __ieee80211_suspend flushes the workers after setting quiescing,
1989          * and we check quiescing / suspended before enqueing new workers.
1990          * We should abort the worker to avoid the races below.
1991          */
1992         if (local->quiescing)
1993                 return false;
1994 
1995         /*
1996          * We might already be suspended if the following scenario occurs:
1997          * __ieee80211_suspend          Control path
1998          *
1999          *                              if (local->quiescing)
2000          *                                      return;
2001          * local->quiescing = true;
2002          * flush_workqueue();
2003          *                              queue_work(...);
2004          * local->suspended = true;
2005          * local->quiescing = false;
2006          *                              worker starts running...
2007          */
2008         if (local->suspended)
2009                 return false;
2010 
2011         return true;
2012 }
2013 
2014 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2015 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2016 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2017                         struct sta_info *sta,
2018                         struct txq_info *txq, int tid);
2019 void ieee80211_txq_purge(struct ieee80211_local *local,
2020                          struct txq_info *txqi);
2021 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2022                                struct ieee80211_sub_if_data *sdata);
2023 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2024                          u16 transaction, u16 auth_alg, u16 status,
2025                          const u8 *extra, size_t extra_len, const u8 *bssid,
2026                          const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2027                          u32 tx_flags);
2028 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2029                                     const u8 *bssid, u16 stype, u16 reason,
2030                                     bool send_frame, u8 *frame_buf);
2031 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
2032                              size_t buffer_len,
2033                              struct ieee80211_scan_ies *ie_desc,
2034                              const u8 *ie, size_t ie_len,
2035                              u8 bands_used, u32 *rate_masks,
2036                              struct cfg80211_chan_def *chandef);
2037 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2038                                           const u8 *src, const u8 *dst,
2039                                           u32 ratemask,
2040                                           struct ieee80211_channel *chan,
2041                                           const u8 *ssid, size_t ssid_len,
2042                                           const u8 *ie, size_t ie_len,
2043                                           bool directed);
2044 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
2045                               const u8 *src, const u8 *dst,
2046                               const u8 *ssid, size_t ssid_len,
2047                               const u8 *ie, size_t ie_len,
2048                               u32 ratemask, bool directed, u32 tx_flags,
2049                               struct ieee80211_channel *channel, bool scan);
2050 
2051 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2052                             struct ieee802_11_elems *elems,
2053                             enum nl80211_band band, u32 *basic_rates);
2054 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2055                                  enum ieee80211_smps_mode smps_mode);
2056 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2057                                 enum ieee80211_smps_mode smps_mode);
2058 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
2059 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
2060 
2061 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2062 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2063                               u16 cap);
2064 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2065                                const struct cfg80211_chan_def *chandef,
2066                                u16 prot_mode, bool rifs_mode);
2067 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2068                                    const struct cfg80211_chan_def *chandef);
2069 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2070                                u32 cap);
2071 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2072                                 const struct cfg80211_chan_def *chandef);
2073 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2074                              const struct ieee80211_supported_band *sband,
2075                              const u8 *srates, int srates_len, u32 *rates);
2076 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2077                             struct sk_buff *skb, bool need_basic,
2078                             enum nl80211_band band);
2079 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2080                                 struct sk_buff *skb, bool need_basic,
2081                                 enum nl80211_band band);
2082 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2083 
2084 /* channel management */
2085 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2086                                struct cfg80211_chan_def *chandef);
2087 bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper,
2088                                 struct cfg80211_chan_def *chandef);
2089 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2090 
2091 int __must_check
2092 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
2093                           const struct cfg80211_chan_def *chandef,
2094                           enum ieee80211_chanctx_mode mode);
2095 int __must_check
2096 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
2097                               const struct cfg80211_chan_def *chandef,
2098                               enum ieee80211_chanctx_mode mode,
2099                               bool radar_required);
2100 int __must_check
2101 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2102 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2103 
2104 int __must_check
2105 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2106                                const struct cfg80211_chan_def *chandef,
2107                                u32 *changed);
2108 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2109 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2110 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2111                                          bool clear);
2112 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2113                                struct ieee80211_chanctx *ctx);
2114 
2115 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2116                                    struct ieee80211_chanctx *chanctx);
2117 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2118                                       struct ieee80211_chanctx *ctx);
2119 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2120 
2121 void ieee80211_dfs_cac_timer(unsigned long data);
2122 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2123 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2124 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2125 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2126                               struct cfg80211_csa_settings *csa_settings);
2127 
2128 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2129 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2130 const struct ieee80211_cipher_scheme *
2131 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2132                  enum nl80211_iftype iftype);
2133 int ieee80211_cs_headroom(struct ieee80211_local *local,
2134                           struct cfg80211_crypto_settings *crypto,
2135                           enum nl80211_iftype iftype);
2136 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2137                            struct ieee80211_sub_if_data *sdata);
2138 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2139                                  const struct cfg80211_chan_def *chandef,
2140                                  enum ieee80211_chanctx_mode chanmode,
2141                                  u8 radar_detect);
2142 int ieee80211_max_num_channels(struct ieee80211_local *local);
2143 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta);
2144 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2145                                        struct ieee80211_chanctx *ctx);
2146 
2147 /* TDLS */
2148 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2149                         const u8 *peer, u8 action_code, u8 dialog_token,
2150                         u16 status_code, u32 peer_capability,
2151                         bool initiator, const u8 *extra_ies,
2152                         size_t extra_ies_len);
2153 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2154                         const u8 *peer, enum nl80211_tdls_operation oper);
2155 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2156 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2157                                   const u8 *addr, u8 oper_class,
2158                                   struct cfg80211_chan_def *chandef);
2159 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2160                                           struct net_device *dev,
2161                                           const u8 *addr);
2162 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2163 void ieee80211_tdls_chsw_work(struct work_struct *wk);
2164 
2165 extern const struct ethtool_ops ieee80211_ethtool_ops;
2166 
2167 #ifdef CONFIG_MAC80211_NOINLINE
2168 #define debug_noinline noinline
2169 #else
2170 #define debug_noinline
2171 #endif
2172 
2173 #endif /* IEEE80211_I_H */
2174 

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