1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright 2002-2005, Instant802 Networks, Inc.
4 * Copyright 2005, Devicescape Software, Inc.
5 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
6 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net>
7 * Copyright 2013-2015 Intel Mobile Communications GmbH
8 * Copyright (C) 2018-2019 Intel Corporation
9 */
10
11 #ifndef IEEE80211_I_H
12 #define IEEE80211_I_H
13
14 #include <linux/kernel.h>
15 #include <linux/device.h>
16 #include <linux/if_ether.h>
17 #include <linux/interrupt.h>
18 #include <linux/list.h>
19 #include <linux/netdevice.h>
20 #include <linux/skbuff.h>
21 #include <linux/workqueue.h>
22 #include <linux/types.h>
23 #include <linux/spinlock.h>
24 #include <linux/etherdevice.h>
25 #include <linux/leds.h>
26 #include <linux/idr.h>
27 #include <linux/rhashtable.h>
28 #include <net/ieee80211_radiotap.h>
29 #include <net/cfg80211.h>
30 #include <net/mac80211.h>
31 #include <net/fq.h>
32 #include "key.h"
33 #include "sta_info.h"
34 #include "debug.h"
35
36 extern const struct cfg80211_ops mac80211_config_ops;
37
38 struct ieee80211_local;
39
40 /* Maximum number of broadcast/multicast frames to buffer when some of the
41 * associated stations are using power saving. */
42 #define AP_MAX_BC_BUFFER 128
43
44 /* Maximum number of frames buffered to all STAs, including multicast frames.
45 * Note: increasing this limit increases the potential memory requirement. Each
46 * frame can be up to about 2 kB long. */
47 #define TOTAL_MAX_TX_BUFFER 512
48
49 /* Required encryption head and tailroom */
50 #define IEEE80211_ENCRYPT_HEADROOM 8
51 #define IEEE80211_ENCRYPT_TAILROOM 18
52
53 /* power level hasn't been configured (or set to automatic) */
54 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
55
56 /*
57 * Some APs experience problems when working with U-APSD. Decreasing the
58 * probability of that happening by using legacy mode for all ACs but VO isn't
59 * enough.
60 *
61 * Cisco 4410N originally forced us to enable VO by default only because it
62 * treated non-VO ACs as legacy.
63 *
64 * However some APs (notably Netgear R7000) silently reclassify packets to
65 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
66 * clients would never see some frames (e.g. ARP responses) or would fetch them
67 * accidentally after a long time.
68 *
69 * It makes little sense to enable u-APSD queues by default because it needs
70 * userspace applications to be aware of it to actually take advantage of the
71 * possible additional powersavings. Implicitly depending on driver autotrigger
72 * frame support doesn't make much sense.
73 */
74 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
75
76 #define IEEE80211_DEFAULT_MAX_SP_LEN \
77 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
78
79 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS];
80
81 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
82
83 #define IEEE80211_MAX_NAN_INSTANCE_ID 255
84
85 struct ieee80211_bss {
86 u32 device_ts_beacon, device_ts_presp;
87
88 bool wmm_used;
89 bool uapsd_supported;
90
91 #define IEEE80211_MAX_SUPP_RATES 32
92 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
93 size_t supp_rates_len;
94 struct ieee80211_rate *beacon_rate;
95
96 /*
97 * During association, we save an ERP value from a probe response so
98 * that we can feed ERP info to the driver when handling the
99 * association completes. these fields probably won't be up-to-date
100 * otherwise, you probably don't want to use them.
101 */
102 bool has_erp_value;
103 u8 erp_value;
104
105 /* Keep track of the corruption of the last beacon/probe response. */
106 u8 corrupt_data;
107
108 /* Keep track of what bits of information we have valid info for. */
109 u8 valid_data;
110 };
111
112 /**
113 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
114 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
115 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
116 *
117 * These are bss flags that are attached to a bss in the
118 * @corrupt_data field of &struct ieee80211_bss.
119 */
120 enum ieee80211_bss_corrupt_data_flags {
121 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
122 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
123 };
124
125 /**
126 * enum ieee80211_valid_data_flags - BSS valid data flags
127 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
128 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
129 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
130 *
131 * These are bss flags that are attached to a bss in the
132 * @valid_data field of &struct ieee80211_bss. They show which parts
133 * of the data structure were received as a result of an un-corrupted
134 * beacon/probe response.
135 */
136 enum ieee80211_bss_valid_data_flags {
137 IEEE80211_BSS_VALID_WMM = BIT(1),
138 IEEE80211_BSS_VALID_RATES = BIT(2),
139 IEEE80211_BSS_VALID_ERP = BIT(3)
140 };
141
142 typedef unsigned __bitwise ieee80211_tx_result;
143 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
144 #define TX_DROP ((__force ieee80211_tx_result) 1u)
145 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
146
147 #define IEEE80211_TX_NO_SEQNO BIT(0)
148 #define IEEE80211_TX_UNICAST BIT(1)
149 #define IEEE80211_TX_PS_BUFFERED BIT(2)
150
151 struct ieee80211_tx_data {
152 struct sk_buff *skb;
153 struct sk_buff_head skbs;
154 struct ieee80211_local *local;
155 struct ieee80211_sub_if_data *sdata;
156 struct sta_info *sta;
157 struct ieee80211_key *key;
158 struct ieee80211_tx_rate rate;
159
160 unsigned int flags;
161 };
162
163
164 typedef unsigned __bitwise ieee80211_rx_result;
165 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
166 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
167 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
168 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
169
170 /**
171 * enum ieee80211_packet_rx_flags - packet RX flags
172 * @IEEE80211_RX_AMSDU: a-MSDU packet
173 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
174 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
175 *
176 * These are per-frame flags that are attached to a frame in the
177 * @rx_flags field of &struct ieee80211_rx_status.
178 */
179 enum ieee80211_packet_rx_flags {
180 IEEE80211_RX_AMSDU = BIT(3),
181 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
182 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
183 };
184
185 /**
186 * enum ieee80211_rx_flags - RX data flags
187 *
188 * @IEEE80211_RX_CMNTR: received on cooked monitor already
189 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
190 * to cfg80211_report_obss_beacon().
191 *
192 * These flags are used across handling multiple interfaces
193 * for a single frame.
194 */
195 enum ieee80211_rx_flags {
196 IEEE80211_RX_CMNTR = BIT(0),
197 IEEE80211_RX_BEACON_REPORTED = BIT(1),
198 };
199
200 struct ieee80211_rx_data {
201 struct napi_struct *napi;
202 struct sk_buff *skb;
203 struct ieee80211_local *local;
204 struct ieee80211_sub_if_data *sdata;
205 struct sta_info *sta;
206 struct ieee80211_key *key;
207
208 unsigned int flags;
209
210 /*
211 * Index into sequence numbers array, 0..16
212 * since the last (16) is used for non-QoS,
213 * will be 16 on non-QoS frames.
214 */
215 int seqno_idx;
216
217 /*
218 * Index into the security IV/PN arrays, 0..16
219 * since the last (16) is used for CCMP-encrypted
220 * management frames, will be set to 16 on mgmt
221 * frames and 0 on non-QoS frames.
222 */
223 int security_idx;
224
225 union {
226 struct {
227 u32 iv32;
228 u16 iv16;
229 } tkip;
230 struct {
231 u8 pn[IEEE80211_CCMP_PN_LEN];
232 } ccm_gcm;
233 };
234 };
235
236 struct ieee80211_csa_settings {
237 const u16 *counter_offsets_beacon;
238 const u16 *counter_offsets_presp;
239
240 int n_counter_offsets_beacon;
241 int n_counter_offsets_presp;
242
243 u8 count;
244 };
245
246 struct beacon_data {
247 u8 *head, *tail;
248 int head_len, tail_len;
249 struct ieee80211_meshconf_ie *meshconf;
250 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
251 u8 csa_current_counter;
252 struct rcu_head rcu_head;
253 };
254
255 struct probe_resp {
256 struct rcu_head rcu_head;
257 int len;
258 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
259 u8 data[0];
260 };
261
262 struct ps_data {
263 /* yes, this looks ugly, but guarantees that we can later use
264 * bitmap_empty :)
265 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
266 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
267 __aligned(__alignof__(unsigned long));
268 struct sk_buff_head bc_buf;
269 atomic_t num_sta_ps; /* number of stations in PS mode */
270 int dtim_count;
271 bool dtim_bc_mc;
272 };
273
274 struct ieee80211_if_ap {
275 struct beacon_data __rcu *beacon;
276 struct probe_resp __rcu *probe_resp;
277
278 /* to be used after channel switch. */
279 struct cfg80211_beacon_data *next_beacon;
280 struct list_head vlans; /* write-protected with RTNL and local->mtx */
281
282 struct ps_data ps;
283 atomic_t num_mcast_sta; /* number of stations receiving multicast */
284 enum ieee80211_smps_mode req_smps, /* requested smps mode */
285 driver_smps_mode; /* smps mode request */
286
287 struct work_struct request_smps_work;
288 bool multicast_to_unicast;
289 };
290
291 struct ieee80211_if_wds {
292 struct sta_info *sta;
293 u8 remote_addr[ETH_ALEN];
294 };
295
296 struct ieee80211_if_vlan {
297 struct list_head list; /* write-protected with RTNL and local->mtx */
298
299 /* used for all tx if the VLAN is configured to 4-addr mode */
300 struct sta_info __rcu *sta;
301 atomic_t num_mcast_sta; /* number of stations receiving multicast */
302 };
303
304 struct mesh_stats {
305 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
306 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
307 __u32 fwded_frames; /* Mesh total forwarded frames */
308 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
309 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
310 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
311 };
312
313 #define PREQ_Q_F_START 0x1
314 #define PREQ_Q_F_REFRESH 0x2
315 struct mesh_preq_queue {
316 struct list_head list;
317 u8 dst[ETH_ALEN];
318 u8 flags;
319 };
320
321 struct ieee80211_roc_work {
322 struct list_head list;
323
324 struct ieee80211_sub_if_data *sdata;
325
326 struct ieee80211_channel *chan;
327
328 bool started, abort, hw_begun, notified;
329 bool on_channel;
330
331 unsigned long start_time;
332
333 u32 duration, req_duration;
334 struct sk_buff *frame;
335 u64 cookie, mgmt_tx_cookie;
336 enum ieee80211_roc_type type;
337 };
338
339 /* flags used in struct ieee80211_if_managed.flags */
340 enum ieee80211_sta_flags {
341 IEEE80211_STA_CONNECTION_POLL = BIT(1),
342 IEEE80211_STA_CONTROL_PORT = BIT(2),
343 IEEE80211_STA_DISABLE_HT = BIT(4),
344 IEEE80211_STA_MFP_ENABLED = BIT(6),
345 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
346 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
347 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
348 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
349 IEEE80211_STA_DISABLE_VHT = BIT(11),
350 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
351 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
352 IEEE80211_STA_DISABLE_WMM = BIT(14),
353 IEEE80211_STA_ENABLE_RRM = BIT(15),
354 IEEE80211_STA_DISABLE_HE = BIT(16),
355 };
356
357 struct ieee80211_mgd_auth_data {
358 struct cfg80211_bss *bss;
359 unsigned long timeout;
360 int tries;
361 u16 algorithm, expected_transaction;
362
363 u8 key[WLAN_KEY_LEN_WEP104];
364 u8 key_len, key_idx;
365 bool done;
366 bool peer_confirmed;
367 bool timeout_started;
368
369 u16 sae_trans, sae_status;
370 size_t data_len;
371 u8 data[];
372 };
373
374 struct ieee80211_mgd_assoc_data {
375 struct cfg80211_bss *bss;
376 const u8 *supp_rates;
377
378 unsigned long timeout;
379 int tries;
380
381 u16 capability;
382 u8 prev_bssid[ETH_ALEN];
383 u8 ssid[IEEE80211_MAX_SSID_LEN];
384 u8 ssid_len;
385 u8 supp_rates_len;
386 bool wmm, uapsd;
387 bool need_beacon;
388 bool synced;
389 bool timeout_started;
390
391 u8 ap_ht_param;
392
393 struct ieee80211_vht_cap ap_vht_cap;
394
395 u8 fils_nonces[2 * FILS_NONCE_LEN];
396 u8 fils_kek[FILS_MAX_KEK_LEN];
397 size_t fils_kek_len;
398
399 size_t ie_len;
400 u8 ie[];
401 };
402
403 struct ieee80211_sta_tx_tspec {
404 /* timestamp of the first packet in the time slice */
405 unsigned long time_slice_start;
406
407 u32 admitted_time; /* in usecs, unlike over the air */
408 u8 tsid;
409 s8 up; /* signed to be able to invalidate with -1 during teardown */
410
411 /* consumed TX time in microseconds in the time slice */
412 u32 consumed_tx_time;
413 enum {
414 TX_TSPEC_ACTION_NONE = 0,
415 TX_TSPEC_ACTION_DOWNGRADE,
416 TX_TSPEC_ACTION_STOP_DOWNGRADE,
417 } action;
418 bool downgraded;
419 };
420
421 DECLARE_EWMA(beacon_signal, 4, 4)
422
423 struct ieee80211_if_managed {
424 struct timer_list timer;
425 struct timer_list conn_mon_timer;
426 struct timer_list bcn_mon_timer;
427 struct timer_list chswitch_timer;
428 struct work_struct monitor_work;
429 struct work_struct chswitch_work;
430 struct work_struct beacon_connection_loss_work;
431 struct work_struct csa_connection_drop_work;
432
433 unsigned long beacon_timeout;
434 unsigned long probe_timeout;
435 int probe_send_count;
436 bool nullfunc_failed;
437 bool connection_loss;
438
439 struct cfg80211_bss *associated;
440 struct ieee80211_mgd_auth_data *auth_data;
441 struct ieee80211_mgd_assoc_data *assoc_data;
442
443 u8 bssid[ETH_ALEN] __aligned(2);
444
445 u16 aid;
446
447 bool powersave; /* powersave requested for this iface */
448 bool broken_ap; /* AP is broken -- turn off powersave */
449 bool have_beacon;
450 u8 dtim_period;
451 enum ieee80211_smps_mode req_smps, /* requested smps mode */
452 driver_smps_mode; /* smps mode request */
453
454 struct work_struct request_smps_work;
455
456 unsigned int flags;
457
458 bool csa_waiting_bcn;
459 bool csa_ignored_same_chan;
460
461 bool beacon_crc_valid;
462 u32 beacon_crc;
463
464 bool status_acked;
465 bool status_received;
466 __le16 status_fc;
467
468 enum {
469 IEEE80211_MFP_DISABLED,
470 IEEE80211_MFP_OPTIONAL,
471 IEEE80211_MFP_REQUIRED
472 } mfp; /* management frame protection */
473
474 /*
475 * Bitmask of enabled u-apsd queues,
476 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
477 * to take effect.
478 */
479 unsigned int uapsd_queues;
480
481 /*
482 * Maximum number of buffered frames AP can deliver during a
483 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
484 * Needs a new association to take effect.
485 */
486 unsigned int uapsd_max_sp_len;
487
488 int wmm_last_param_set;
489 int mu_edca_last_param_set;
490
491 u8 use_4addr;
492
493 s16 p2p_noa_index;
494
495 struct ewma_beacon_signal ave_beacon_signal;
496
497 /*
498 * Number of Beacon frames used in ave_beacon_signal. This can be used
499 * to avoid generating less reliable cqm events that would be based
500 * only on couple of received frames.
501 */
502 unsigned int count_beacon_signal;
503
504 /* Number of times beacon loss was invoked. */
505 unsigned int beacon_loss_count;
506
507 /*
508 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
509 * that triggered a cqm event. 0 indicates that no event has been
510 * generated for the current association.
511 */
512 int last_cqm_event_signal;
513
514 /*
515 * State variables for keeping track of RSSI of the AP currently
516 * connected to and informing driver when RSSI has gone
517 * below/above a certain threshold.
518 */
519 int rssi_min_thold, rssi_max_thold;
520 int last_ave_beacon_signal;
521
522 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
523 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
524 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
525 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
526
527 /* TDLS support */
528 u8 tdls_peer[ETH_ALEN] __aligned(2);
529 struct delayed_work tdls_peer_del_work;
530 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
531 struct sk_buff *teardown_skb; /* A copy to send through the AP */
532 spinlock_t teardown_lock; /* To lock changing teardown_skb */
533 bool tdls_chan_switch_prohibited;
534 bool tdls_wider_bw_prohibited;
535
536 /* WMM-AC TSPEC support */
537 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
538 /* Use a separate work struct so that we can do something here
539 * while the sdata->work is flushing the queues, for example.
540 * otherwise, in scenarios where we hardly get any traffic out
541 * on the BE queue, but there's a lot of VO traffic, we might
542 * get stuck in a downgraded situation and flush takes forever.
543 */
544 struct delayed_work tx_tspec_wk;
545
546 /* Information elements from the last transmitted (Re)Association
547 * Request frame.
548 */
549 u8 *assoc_req_ies;
550 size_t assoc_req_ies_len;
551 };
552
553 struct ieee80211_if_ibss {
554 struct timer_list timer;
555 struct work_struct csa_connection_drop_work;
556
557 unsigned long last_scan_completed;
558
559 u32 basic_rates;
560
561 bool fixed_bssid;
562 bool fixed_channel;
563 bool privacy;
564
565 bool control_port;
566 bool userspace_handles_dfs;
567
568 u8 bssid[ETH_ALEN] __aligned(2);
569 u8 ssid[IEEE80211_MAX_SSID_LEN];
570 u8 ssid_len, ie_len;
571 u8 *ie;
572 struct cfg80211_chan_def chandef;
573
574 unsigned long ibss_join_req;
575 /* probe response/beacon for IBSS */
576 struct beacon_data __rcu *presp;
577
578 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
579 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
580
581 spinlock_t incomplete_lock;
582 struct list_head incomplete_stations;
583
584 enum {
585 IEEE80211_IBSS_MLME_SEARCH,
586 IEEE80211_IBSS_MLME_JOINED,
587 } state;
588 };
589
590 /**
591 * struct ieee80211_if_ocb - OCB mode state
592 *
593 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
594 * @wrkq_flags: OCB deferred task action
595 * @incomplete_lock: delayed STA insertion lock
596 * @incomplete_stations: list of STAs waiting for delayed insertion
597 * @joined: indication if the interface is connected to an OCB network
598 */
599 struct ieee80211_if_ocb {
600 struct timer_list housekeeping_timer;
601 unsigned long wrkq_flags;
602
603 spinlock_t incomplete_lock;
604 struct list_head incomplete_stations;
605
606 bool joined;
607 };
608
609 /**
610 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
611 *
612 * these declarations define the interface, which enables
613 * vendor-specific mesh synchronization
614 *
615 */
616 struct ieee802_11_elems;
617 struct ieee80211_mesh_sync_ops {
618 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
619 u16 stype,
620 struct ieee80211_mgmt *mgmt,
621 struct ieee802_11_elems *elems,
622 struct ieee80211_rx_status *rx_status);
623
624 /* should be called with beacon_data under RCU read lock */
625 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
626 struct beacon_data *beacon);
627 /* add other framework functions here */
628 };
629
630 struct mesh_csa_settings {
631 struct rcu_head rcu_head;
632 struct cfg80211_csa_settings settings;
633 };
634
635 /**
636 * struct mesh_table
637 *
638 * @known_gates: list of known mesh gates and their mpaths by the station. The
639 * gate's mpath may or may not be resolved and active.
640 * @gates_lock: protects updates to known_gates
641 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr
642 * @walk_head: linked list containing all mesh_path objects
643 * @walk_lock: lock protecting walk_head
644 * @entries: number of entries in the table
645 */
646 struct mesh_table {
647 struct hlist_head known_gates;
648 spinlock_t gates_lock;
649 struct rhashtable rhead;
650 struct hlist_head walk_head;
651 spinlock_t walk_lock;
652 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */
653 };
654
655 struct ieee80211_if_mesh {
656 struct timer_list housekeeping_timer;
657 struct timer_list mesh_path_timer;
658 struct timer_list mesh_path_root_timer;
659
660 unsigned long wrkq_flags;
661 unsigned long mbss_changed;
662
663 bool userspace_handles_dfs;
664
665 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
666 size_t mesh_id_len;
667 /* Active Path Selection Protocol Identifier */
668 u8 mesh_pp_id;
669 /* Active Path Selection Metric Identifier */
670 u8 mesh_pm_id;
671 /* Congestion Control Mode Identifier */
672 u8 mesh_cc_id;
673 /* Synchronization Protocol Identifier */
674 u8 mesh_sp_id;
675 /* Authentication Protocol Identifier */
676 u8 mesh_auth_id;
677 /* Local mesh Sequence Number */
678 u32 sn;
679 /* Last used PREQ ID */
680 u32 preq_id;
681 atomic_t mpaths;
682 /* Timestamp of last SN update */
683 unsigned long last_sn_update;
684 /* Time when it's ok to send next PERR */
685 unsigned long next_perr;
686 /* Timestamp of last PREQ sent */
687 unsigned long last_preq;
688 struct mesh_rmc *rmc;
689 spinlock_t mesh_preq_queue_lock;
690 struct mesh_preq_queue preq_queue;
691 int preq_queue_len;
692 struct mesh_stats mshstats;
693 struct mesh_config mshcfg;
694 atomic_t estab_plinks;
695 u32 mesh_seqnum;
696 bool accepting_plinks;
697 int num_gates;
698 struct beacon_data __rcu *beacon;
699 const u8 *ie;
700 u8 ie_len;
701 enum {
702 IEEE80211_MESH_SEC_NONE = 0x0,
703 IEEE80211_MESH_SEC_AUTHED = 0x1,
704 IEEE80211_MESH_SEC_SECURED = 0x2,
705 } security;
706 bool user_mpm;
707 /* Extensible Synchronization Framework */
708 const struct ieee80211_mesh_sync_ops *sync_ops;
709 s64 sync_offset_clockdrift_max;
710 spinlock_t sync_offset_lock;
711 /* mesh power save */
712 enum nl80211_mesh_power_mode nonpeer_pm;
713 int ps_peers_light_sleep;
714 int ps_peers_deep_sleep;
715 struct ps_data ps;
716 /* Channel Switching Support */
717 struct mesh_csa_settings __rcu *csa;
718 enum {
719 IEEE80211_MESH_CSA_ROLE_NONE,
720 IEEE80211_MESH_CSA_ROLE_INIT,
721 IEEE80211_MESH_CSA_ROLE_REPEATER,
722 } csa_role;
723 u8 chsw_ttl;
724 u16 pre_value;
725
726 /* offset from skb->data while building IE */
727 int meshconf_offset;
728
729 struct mesh_table mesh_paths;
730 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */
731 int mesh_paths_generation;
732 int mpp_paths_generation;
733 };
734
735 #ifdef CONFIG_MAC80211_MESH
736 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
737 do { (msh)->mshstats.name++; } while (0)
738 #else
739 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
740 do { } while (0)
741 #endif
742
743 /**
744 * enum ieee80211_sub_if_data_flags - virtual interface flags
745 *
746 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
747 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
748 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
749 * associated stations and deliver multicast frames both
750 * back to wireless media and to the local net stack.
751 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
752 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
753 */
754 enum ieee80211_sub_if_data_flags {
755 IEEE80211_SDATA_ALLMULTI = BIT(0),
756 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
757 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
758 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
759 IEEE80211_SDATA_IN_DRIVER = BIT(5),
760 };
761
762 /**
763 * enum ieee80211_sdata_state_bits - virtual interface state bits
764 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
765 * mirrors netif_running() but is separate for interface type
766 * change handling while the interface is up
767 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
768 * mode, so queues are stopped
769 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
770 * to offchannel, reset when offchannel returns
771 */
772 enum ieee80211_sdata_state_bits {
773 SDATA_STATE_RUNNING,
774 SDATA_STATE_OFFCHANNEL,
775 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
776 };
777
778 /**
779 * enum ieee80211_chanctx_mode - channel context configuration mode
780 *
781 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
782 * multiple interfaces
783 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
784 * only by a single interface. This can be used for example for
785 * non-fixed channel IBSS.
786 */
787 enum ieee80211_chanctx_mode {
788 IEEE80211_CHANCTX_SHARED,
789 IEEE80211_CHANCTX_EXCLUSIVE
790 };
791
792 /**
793 * enum ieee80211_chanctx_replace_state - channel context replacement state
794 *
795 * This is used for channel context in-place reservations that require channel
796 * context switch/swap.
797 *
798 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
799 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
800 * by a (not yet registered) channel context pointed by %replace_ctx.
801 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
802 * replaces an existing channel context pointed to by %replace_ctx.
803 */
804 enum ieee80211_chanctx_replace_state {
805 IEEE80211_CHANCTX_REPLACE_NONE,
806 IEEE80211_CHANCTX_WILL_BE_REPLACED,
807 IEEE80211_CHANCTX_REPLACES_OTHER,
808 };
809
810 struct ieee80211_chanctx {
811 struct list_head list;
812 struct rcu_head rcu_head;
813
814 struct list_head assigned_vifs;
815 struct list_head reserved_vifs;
816
817 enum ieee80211_chanctx_replace_state replace_state;
818 struct ieee80211_chanctx *replace_ctx;
819
820 enum ieee80211_chanctx_mode mode;
821 bool driver_present;
822
823 struct ieee80211_chanctx_conf conf;
824 };
825
826 struct mac80211_qos_map {
827 struct cfg80211_qos_map qos_map;
828 struct rcu_head rcu_head;
829 };
830
831 enum txq_info_flags {
832 IEEE80211_TXQ_STOP,
833 IEEE80211_TXQ_AMPDU,
834 IEEE80211_TXQ_NO_AMSDU,
835 IEEE80211_TXQ_STOP_NETIF_TX,
836 };
837
838 /**
839 * struct txq_info - per tid queue
840 *
841 * @tin: contains packets split into multiple flows
842 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
843 * a fq_flow which is already owned by a different tin
844 * @def_cvars: codel vars for @def_flow
845 * @frags: used to keep fragments created after dequeue
846 * @schedule_order: used with ieee80211_local->active_txqs
847 * @schedule_round: counter to prevent infinite loops on TXQ scheduling
848 */
849 struct txq_info {
850 struct fq_tin tin;
851 struct fq_flow def_flow;
852 struct codel_vars def_cvars;
853 struct codel_stats cstats;
854 struct sk_buff_head frags;
855 struct list_head schedule_order;
856 u16 schedule_round;
857 unsigned long flags;
858
859 /* keep last! */
860 struct ieee80211_txq txq;
861 };
862
863 struct ieee80211_if_mntr {
864 u32 flags;
865 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
866
867 struct list_head list;
868 };
869
870 /**
871 * struct ieee80211_if_nan - NAN state
872 *
873 * @conf: current NAN configuration
874 * @func_ids: a bitmap of available instance_id's
875 */
876 struct ieee80211_if_nan {
877 struct cfg80211_nan_conf conf;
878
879 /* protects function_inst_ids */
880 spinlock_t func_lock;
881 struct idr function_inst_ids;
882 };
883
884 struct ieee80211_sub_if_data {
885 struct list_head list;
886
887 struct wireless_dev wdev;
888
889 /* keys */
890 struct list_head key_list;
891
892 /* count for keys needing tailroom space allocation */
893 int crypto_tx_tailroom_needed_cnt;
894 int crypto_tx_tailroom_pending_dec;
895 struct delayed_work dec_tailroom_needed_wk;
896
897 struct net_device *dev;
898 struct ieee80211_local *local;
899
900 unsigned int flags;
901
902 unsigned long state;
903
904 char name[IFNAMSIZ];
905
906 struct ieee80211_fragment_cache frags;
907
908 /* TID bitmap for NoAck policy */
909 u16 noack_map;
910
911 /* bit field of ACM bits (BIT(802.1D tag)) */
912 u8 wmm_acm;
913
914 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
915 struct ieee80211_key __rcu *default_unicast_key;
916 struct ieee80211_key __rcu *default_multicast_key;
917 struct ieee80211_key __rcu *default_mgmt_key;
918
919 u16 sequence_number;
920 __be16 control_port_protocol;
921 bool control_port_no_encrypt;
922 bool control_port_over_nl80211;
923 int encrypt_headroom;
924
925 atomic_t num_tx_queued;
926 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
927 struct mac80211_qos_map __rcu *qos_map;
928
929 struct work_struct csa_finalize_work;
930 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
931 struct cfg80211_chan_def csa_chandef;
932
933 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
934 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
935
936 /* context reservation -- protected with chanctx_mtx */
937 struct ieee80211_chanctx *reserved_chanctx;
938 struct cfg80211_chan_def reserved_chandef;
939 bool reserved_radar_required;
940 bool reserved_ready;
941
942 /* used to reconfigure hardware SM PS */
943 struct work_struct recalc_smps;
944
945 struct work_struct work;
946 struct sk_buff_head skb_queue;
947
948 u8 needed_rx_chains;
949 enum ieee80211_smps_mode smps_mode;
950
951 int user_power_level; /* in dBm */
952 int ap_power_level; /* in dBm */
953
954 bool radar_required;
955 struct delayed_work dfs_cac_timer_work;
956
957 /*
958 * AP this belongs to: self in AP mode and
959 * corresponding AP in VLAN mode, NULL for
960 * all others (might be needed later in IBSS)
961 */
962 struct ieee80211_if_ap *bss;
963
964 /* bitmap of allowed (non-MCS) rate indexes for rate control */
965 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
966
967 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
968 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
969
970 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
971 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
972
973 union {
974 struct ieee80211_if_ap ap;
975 struct ieee80211_if_wds wds;
976 struct ieee80211_if_vlan vlan;
977 struct ieee80211_if_managed mgd;
978 struct ieee80211_if_ibss ibss;
979 struct ieee80211_if_mesh mesh;
980 struct ieee80211_if_ocb ocb;
981 struct ieee80211_if_mntr mntr;
982 struct ieee80211_if_nan nan;
983 } u;
984
985 #ifdef CONFIG_MAC80211_DEBUGFS
986 struct {
987 struct dentry *subdir_stations;
988 struct dentry *default_unicast_key;
989 struct dentry *default_multicast_key;
990 struct dentry *default_mgmt_key;
991 } debugfs;
992 #endif
993
994 /* must be last, dynamically sized area in this! */
995 struct ieee80211_vif vif;
996 };
997
998 static inline
vif_to_sdata(struct ieee80211_vif * p)999 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
1000 {
1001 return container_of(p, struct ieee80211_sub_if_data, vif);
1002 }
1003
sdata_lock(struct ieee80211_sub_if_data * sdata)1004 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
1005 __acquires(&sdata->wdev.mtx)
1006 {
1007 mutex_lock(&sdata->wdev.mtx);
1008 __acquire(&sdata->wdev.mtx);
1009 }
1010
sdata_unlock(struct ieee80211_sub_if_data * sdata)1011 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
1012 __releases(&sdata->wdev.mtx)
1013 {
1014 mutex_unlock(&sdata->wdev.mtx);
1015 __release(&sdata->wdev.mtx);
1016 }
1017
1018 #define sdata_dereference(p, sdata) \
1019 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
1020
1021 static inline void
sdata_assert_lock(struct ieee80211_sub_if_data * sdata)1022 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
1023 {
1024 lockdep_assert_held(&sdata->wdev.mtx);
1025 }
1026
1027 static inline int
ieee80211_chandef_get_shift(struct cfg80211_chan_def * chandef)1028 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1029 {
1030 switch (chandef->width) {
1031 case NL80211_CHAN_WIDTH_5:
1032 return 2;
1033 case NL80211_CHAN_WIDTH_10:
1034 return 1;
1035 default:
1036 return 0;
1037 }
1038 }
1039
1040 static inline int
ieee80211_vif_get_shift(struct ieee80211_vif * vif)1041 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1042 {
1043 struct ieee80211_chanctx_conf *chanctx_conf;
1044 int shift = 0;
1045
1046 rcu_read_lock();
1047 chanctx_conf = rcu_dereference(vif->chanctx_conf);
1048 if (chanctx_conf)
1049 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1050 rcu_read_unlock();
1051
1052 return shift;
1053 }
1054
1055 enum {
1056 IEEE80211_RX_MSG = 1,
1057 IEEE80211_TX_STATUS_MSG = 2,
1058 };
1059
1060 enum queue_stop_reason {
1061 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1062 IEEE80211_QUEUE_STOP_REASON_PS,
1063 IEEE80211_QUEUE_STOP_REASON_CSA,
1064 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1065 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1066 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1067 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1068 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1069 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1070 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1071 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE,
1072
1073 IEEE80211_QUEUE_STOP_REASONS,
1074 };
1075
1076 #ifdef CONFIG_MAC80211_LEDS
1077 struct tpt_led_trigger {
1078 char name[32];
1079 const struct ieee80211_tpt_blink *blink_table;
1080 unsigned int blink_table_len;
1081 struct timer_list timer;
1082 struct ieee80211_local *local;
1083 unsigned long prev_traffic;
1084 unsigned long tx_bytes, rx_bytes;
1085 unsigned int active, want;
1086 bool running;
1087 };
1088 #endif
1089
1090 /**
1091 * mac80211 scan flags - currently active scan mode
1092 *
1093 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1094 * well be on the operating channel
1095 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1096 * determine if we are on the operating channel or not
1097 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1098 * channel. This should not interrupt normal traffic.
1099 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1100 * that the scan completed.
1101 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1102 * a scan complete for an aborted scan.
1103 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1104 * cancelled.
1105 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR
1106 * and could send a probe request after receiving a beacon.
1107 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request
1108 */
1109 enum {
1110 SCAN_SW_SCANNING,
1111 SCAN_HW_SCANNING,
1112 SCAN_ONCHANNEL_SCANNING,
1113 SCAN_COMPLETED,
1114 SCAN_ABORTED,
1115 SCAN_HW_CANCELLED,
1116 SCAN_BEACON_WAIT,
1117 SCAN_BEACON_DONE,
1118 };
1119
1120 /**
1121 * enum mac80211_scan_state - scan state machine states
1122 *
1123 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1124 * determines if we should keep on scanning or switch back to the
1125 * operating channel
1126 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1127 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1128 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1129 * send out data
1130 * @SCAN_RESUME: Resume the scan and scan the next channel
1131 * @SCAN_ABORT: Abort the scan and go back to operating channel
1132 */
1133 enum mac80211_scan_state {
1134 SCAN_DECISION,
1135 SCAN_SET_CHANNEL,
1136 SCAN_SEND_PROBE,
1137 SCAN_SUSPEND,
1138 SCAN_RESUME,
1139 SCAN_ABORT,
1140 };
1141
1142 struct ieee80211_local {
1143 /* embed the driver visible part.
1144 * don't cast (use the static inlines below), but we keep
1145 * it first anyway so they become a no-op */
1146 struct ieee80211_hw hw;
1147
1148 struct fq fq;
1149 struct codel_vars *cvars;
1150 struct codel_params cparams;
1151
1152 /* protects active_txqs and txqi->schedule_order */
1153 spinlock_t active_txq_lock[IEEE80211_NUM_ACS];
1154 struct list_head active_txqs[IEEE80211_NUM_ACS];
1155 u16 schedule_round[IEEE80211_NUM_ACS];
1156
1157 u16 airtime_flags;
1158
1159 const struct ieee80211_ops *ops;
1160
1161 /*
1162 * private workqueue to mac80211. mac80211 makes this accessible
1163 * via ieee80211_queue_work()
1164 */
1165 struct workqueue_struct *workqueue;
1166
1167 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1168 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1169 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1170 spinlock_t queue_stop_reason_lock;
1171
1172 int open_count;
1173 int monitors, cooked_mntrs;
1174 /* number of interfaces with corresponding FIF_ flags */
1175 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1176 fif_probe_req;
1177 int probe_req_reg;
1178 unsigned int filter_flags; /* FIF_* */
1179
1180 bool wiphy_ciphers_allocated;
1181
1182 bool use_chanctx;
1183
1184 /* protects the aggregated multicast list and filter calls */
1185 spinlock_t filter_lock;
1186
1187 /* used for uploading changed mc list */
1188 struct work_struct reconfig_filter;
1189
1190 /* aggregated multicast list */
1191 struct netdev_hw_addr_list mc_list;
1192
1193 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1194
1195 /*
1196 * suspended is true if we finished all the suspend _and_ we have
1197 * not yet come up from resume. This is to be used by mac80211
1198 * to ensure driver sanity during suspend and mac80211's own
1199 * sanity. It can eventually be used for WoW as well.
1200 */
1201 bool suspended;
1202
1203 /*
1204 * Resuming is true while suspended, but when we're reprogramming the
1205 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1206 * again even though some other parts of the stack are still suspended
1207 * and we still drop received frames to avoid waking the stack.
1208 */
1209 bool resuming;
1210
1211 /*
1212 * quiescing is true during the suspend process _only_ to
1213 * ease timer cancelling etc.
1214 */
1215 bool quiescing;
1216
1217 /* device is started */
1218 bool started;
1219
1220 /* device is during a HW reconfig */
1221 bool in_reconfig;
1222
1223 /* wowlan is enabled -- don't reconfig on resume */
1224 bool wowlan;
1225
1226 struct work_struct radar_detected_work;
1227
1228 /* number of RX chains the hardware has */
1229 u8 rx_chains;
1230
1231 /* bitmap of which sbands were copied */
1232 u8 sband_allocated;
1233
1234 int tx_headroom; /* required headroom for hardware/radiotap */
1235
1236 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1237 * added to skb_queue will be processed, but frames in
1238 * skb_queue_unreliable may be dropped if the total length of these
1239 * queues increases over the limit. */
1240 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1241 struct tasklet_struct tasklet;
1242 struct sk_buff_head skb_queue;
1243 struct sk_buff_head skb_queue_unreliable;
1244
1245 spinlock_t rx_path_lock;
1246
1247 /* Station data */
1248 /*
1249 * The mutex only protects the list, hash table and
1250 * counter, reads are done with RCU.
1251 */
1252 struct mutex sta_mtx;
1253 spinlock_t tim_lock;
1254 unsigned long num_sta;
1255 struct list_head sta_list;
1256 struct rhltable sta_hash;
1257 struct timer_list sta_cleanup;
1258 int sta_generation;
1259
1260 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1261 struct tasklet_struct tx_pending_tasklet;
1262 struct tasklet_struct wake_txqs_tasklet;
1263
1264 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1265
1266 /* number of interfaces with allmulti RX */
1267 atomic_t iff_allmultis;
1268
1269 struct rate_control_ref *rate_ctrl;
1270
1271 struct arc4_ctx wep_tx_ctx;
1272 struct arc4_ctx wep_rx_ctx;
1273 u32 wep_iv;
1274
1275 /* see iface.c */
1276 struct list_head interfaces;
1277 struct list_head mon_list; /* only that are IFF_UP && !cooked */
1278 struct mutex iflist_mtx;
1279
1280 /*
1281 * Key mutex, protects sdata's key_list and sta_info's
1282 * key pointers and ptk_idx (write access, they're RCU.)
1283 */
1284 struct mutex key_mtx;
1285
1286 /* mutex for scan and work locking */
1287 struct mutex mtx;
1288
1289 /* Scanning and BSS list */
1290 unsigned long scanning;
1291 struct cfg80211_ssid scan_ssid;
1292 struct cfg80211_scan_request *int_scan_req;
1293 struct cfg80211_scan_request __rcu *scan_req;
1294 struct ieee80211_scan_request *hw_scan_req;
1295 struct cfg80211_chan_def scan_chandef;
1296 enum nl80211_band hw_scan_band;
1297 int scan_channel_idx;
1298 int scan_ies_len;
1299 int hw_scan_ies_bufsize;
1300 struct cfg80211_scan_info scan_info;
1301
1302 struct work_struct sched_scan_stopped_work;
1303 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1304 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1305 u8 scan_addr[ETH_ALEN];
1306
1307 unsigned long leave_oper_channel_time;
1308 enum mac80211_scan_state next_scan_state;
1309 struct delayed_work scan_work;
1310 struct ieee80211_sub_if_data __rcu *scan_sdata;
1311 /* For backward compatibility only -- do not use */
1312 struct cfg80211_chan_def _oper_chandef;
1313
1314 /* Temporary remain-on-channel for off-channel operations */
1315 struct ieee80211_channel *tmp_channel;
1316
1317 /* channel contexts */
1318 struct list_head chanctx_list;
1319 struct mutex chanctx_mtx;
1320
1321 #ifdef CONFIG_MAC80211_LEDS
1322 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1323 struct led_trigger tpt_led;
1324 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1325 atomic_t radio_led_active, tpt_led_active;
1326 struct tpt_led_trigger *tpt_led_trigger;
1327 #endif
1328
1329 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1330 /* SNMP counters */
1331 /* dot11CountersTable */
1332 u32 dot11TransmittedFragmentCount;
1333 u32 dot11MulticastTransmittedFrameCount;
1334 u32 dot11FailedCount;
1335 u32 dot11RetryCount;
1336 u32 dot11MultipleRetryCount;
1337 u32 dot11FrameDuplicateCount;
1338 u32 dot11ReceivedFragmentCount;
1339 u32 dot11MulticastReceivedFrameCount;
1340 u32 dot11TransmittedFrameCount;
1341
1342 /* TX/RX handler statistics */
1343 unsigned int tx_handlers_drop;
1344 unsigned int tx_handlers_queued;
1345 unsigned int tx_handlers_drop_wep;
1346 unsigned int tx_handlers_drop_not_assoc;
1347 unsigned int tx_handlers_drop_unauth_port;
1348 unsigned int rx_handlers_drop;
1349 unsigned int rx_handlers_queued;
1350 unsigned int rx_handlers_drop_nullfunc;
1351 unsigned int rx_handlers_drop_defrag;
1352 unsigned int tx_expand_skb_head;
1353 unsigned int tx_expand_skb_head_cloned;
1354 unsigned int rx_expand_skb_head_defrag;
1355 unsigned int rx_handlers_fragments;
1356 unsigned int tx_status_drop;
1357 #define I802_DEBUG_INC(c) (c)++
1358 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1359 #define I802_DEBUG_INC(c) do { } while (0)
1360 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1361
1362
1363 int total_ps_buffered; /* total number of all buffered unicast and
1364 * multicast packets for power saving stations
1365 */
1366
1367 bool pspolling;
1368 bool offchannel_ps_enabled;
1369 /*
1370 * PS can only be enabled when we have exactly one managed
1371 * interface (and monitors) in PS, this then points there.
1372 */
1373 struct ieee80211_sub_if_data *ps_sdata;
1374 struct work_struct dynamic_ps_enable_work;
1375 struct work_struct dynamic_ps_disable_work;
1376 struct timer_list dynamic_ps_timer;
1377 struct notifier_block ifa_notifier;
1378 struct notifier_block ifa6_notifier;
1379
1380 /*
1381 * The dynamic ps timeout configured from user space via WEXT -
1382 * this will override whatever chosen by mac80211 internally.
1383 */
1384 int dynamic_ps_forced_timeout;
1385
1386 int user_power_level; /* in dBm, for all interfaces */
1387
1388 enum ieee80211_smps_mode smps_mode;
1389
1390 struct work_struct restart_work;
1391
1392 #ifdef CONFIG_MAC80211_DEBUGFS
1393 struct local_debugfsdentries {
1394 struct dentry *rcdir;
1395 struct dentry *keys;
1396 } debugfs;
1397 bool force_tx_status;
1398 #endif
1399
1400 /*
1401 * Remain-on-channel support
1402 */
1403 struct delayed_work roc_work;
1404 struct list_head roc_list;
1405 struct work_struct hw_roc_start, hw_roc_done;
1406 unsigned long hw_roc_start_time;
1407 u64 roc_cookie_counter;
1408
1409 struct idr ack_status_frames;
1410 spinlock_t ack_status_lock;
1411
1412 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1413
1414 /* virtual monitor interface */
1415 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1416 struct cfg80211_chan_def monitor_chandef;
1417
1418 /* extended capabilities provided by mac80211 */
1419 u8 ext_capa[8];
1420
1421 /* TDLS channel switch */
1422 struct work_struct tdls_chsw_work;
1423 struct sk_buff_head skb_queue_tdls_chsw;
1424 };
1425
1426 static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(struct net_device * dev)1427 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1428 {
1429 return netdev_priv(dev);
1430 }
1431
1432 static inline struct ieee80211_sub_if_data *
IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev * wdev)1433 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1434 {
1435 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1436 }
1437
1438 static inline struct ieee80211_supported_band *
ieee80211_get_sband(struct ieee80211_sub_if_data * sdata)1439 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1440 {
1441 struct ieee80211_local *local = sdata->local;
1442 struct ieee80211_chanctx_conf *chanctx_conf;
1443 enum nl80211_band band;
1444
1445 rcu_read_lock();
1446 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1447
1448 if (!chanctx_conf) {
1449 rcu_read_unlock();
1450 return NULL;
1451 }
1452
1453 band = chanctx_conf->def.chan->band;
1454 rcu_read_unlock();
1455
1456 return local->hw.wiphy->bands[band];
1457 }
1458
1459 /* this struct holds the value parsing from channel switch IE */
1460 struct ieee80211_csa_ie {
1461 struct cfg80211_chan_def chandef;
1462 u8 mode;
1463 u8 count;
1464 u8 ttl;
1465 u16 pre_value;
1466 u16 reason_code;
1467 u32 max_switch_time;
1468 };
1469
1470 /* Parsed Information Elements */
1471 struct ieee802_11_elems {
1472 const u8 *ie_start;
1473 size_t total_len;
1474
1475 /* pointers to IEs */
1476 const struct ieee80211_tdls_lnkie *lnk_id;
1477 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1478 const u8 *ext_capab;
1479 const u8 *ssid;
1480 const u8 *supp_rates;
1481 const u8 *ds_params;
1482 const struct ieee80211_tim_ie *tim;
1483 const u8 *rsn;
1484 const u8 *erp_info;
1485 const u8 *ext_supp_rates;
1486 const u8 *wmm_info;
1487 const u8 *wmm_param;
1488 const struct ieee80211_ht_cap *ht_cap_elem;
1489 const struct ieee80211_ht_operation *ht_operation;
1490 const struct ieee80211_vht_cap *vht_cap_elem;
1491 const struct ieee80211_vht_operation *vht_operation;
1492 const struct ieee80211_meshconf_ie *mesh_config;
1493 const u8 *he_cap;
1494 const struct ieee80211_he_operation *he_operation;
1495 const struct ieee80211_he_spr *he_spr;
1496 const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1497 const u8 *uora_element;
1498 const u8 *mesh_id;
1499 const u8 *peering;
1500 const __le16 *awake_window;
1501 const u8 *preq;
1502 const u8 *prep;
1503 const u8 *perr;
1504 const struct ieee80211_rann_ie *rann;
1505 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1506 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1507 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1508 const u8 *max_channel_switch_time;
1509 const u8 *country_elem;
1510 const u8 *pwr_constr_elem;
1511 const u8 *cisco_dtpc_elem;
1512 const struct ieee80211_timeout_interval_ie *timeout_int;
1513 const u8 *opmode_notif;
1514 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1515 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1516 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1517 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
1518 const struct ieee80211_bssid_index *bssid_index;
1519 u8 max_bssid_indicator;
1520 u8 dtim_count;
1521 u8 dtim_period;
1522 const struct ieee80211_addba_ext_ie *addba_ext_ie;
1523
1524 /* length of them, respectively */
1525 u8 ext_capab_len;
1526 u8 ssid_len;
1527 u8 supp_rates_len;
1528 u8 tim_len;
1529 u8 rsn_len;
1530 u8 ext_supp_rates_len;
1531 u8 wmm_info_len;
1532 u8 wmm_param_len;
1533 u8 he_cap_len;
1534 u8 mesh_id_len;
1535 u8 peering_len;
1536 u8 preq_len;
1537 u8 prep_len;
1538 u8 perr_len;
1539 u8 country_elem_len;
1540 u8 bssid_index_len;
1541
1542 void *nontx_profile;
1543
1544 /* whether a parse error occurred while retrieving these elements */
1545 bool parse_error;
1546 };
1547
hw_to_local(struct ieee80211_hw * hw)1548 static inline struct ieee80211_local *hw_to_local(
1549 struct ieee80211_hw *hw)
1550 {
1551 return container_of(hw, struct ieee80211_local, hw);
1552 }
1553
to_txq_info(struct ieee80211_txq * txq)1554 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1555 {
1556 return container_of(txq, struct txq_info, txq);
1557 }
1558
txq_has_queue(struct ieee80211_txq * txq)1559 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1560 {
1561 struct txq_info *txqi = to_txq_info(txq);
1562
1563 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1564 }
1565
ieee80211_bssid_match(const u8 * raddr,const u8 * addr)1566 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1567 {
1568 return ether_addr_equal(raddr, addr) ||
1569 is_broadcast_ether_addr(raddr);
1570 }
1571
1572 static inline bool
ieee80211_have_rx_timestamp(struct ieee80211_rx_status * status)1573 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1574 {
1575 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1576 status->flag & RX_FLAG_MACTIME_END);
1577 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END))
1578 return true;
1579 /* can't handle non-legacy preamble yet */
1580 if (status->flag & RX_FLAG_MACTIME_PLCP_START &&
1581 status->encoding == RX_ENC_LEGACY)
1582 return true;
1583 return false;
1584 }
1585
1586 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1587 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1588
1589 /* This function returns the number of multicast stations connected to this
1590 * interface. It returns -1 if that number is not tracked, that is for netdevs
1591 * not in AP or AP_VLAN mode or when using 4addr.
1592 */
1593 static inline int
ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data * sdata)1594 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1595 {
1596 if (sdata->vif.type == NL80211_IFTYPE_AP)
1597 return atomic_read(&sdata->u.ap.num_mcast_sta);
1598 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1599 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1600 return -1;
1601 }
1602
1603 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1604 struct ieee80211_rx_status *status,
1605 unsigned int mpdu_len,
1606 unsigned int mpdu_offset);
1607 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1608 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1609 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1610 u32 changed);
1611 void ieee80211_configure_filter(struct ieee80211_local *local);
1612 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1613
1614 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1615 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1616 u64 *cookie, gfp_t gfp);
1617
1618 void ieee80211_check_fast_rx(struct sta_info *sta);
1619 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1620 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1621 void ieee80211_clear_fast_rx(struct sta_info *sta);
1622
1623 /* STA code */
1624 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1625 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1626 struct cfg80211_auth_request *req);
1627 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1628 struct cfg80211_assoc_request *req);
1629 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1630 struct cfg80211_deauth_request *req);
1631 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1632 struct cfg80211_disassoc_request *req);
1633 void ieee80211_send_pspoll(struct ieee80211_local *local,
1634 struct ieee80211_sub_if_data *sdata);
1635 void ieee80211_recalc_ps(struct ieee80211_local *local);
1636 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1637 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1638 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1639 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1640 struct sk_buff *skb);
1641 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1642 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1643 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1644 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1645 __le16 fc, bool acked);
1646 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1647 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1648 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1649
1650 /* IBSS code */
1651 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1652 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1653 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1654 const u8 *bssid, const u8 *addr, u32 supp_rates);
1655 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1656 struct cfg80211_ibss_params *params);
1657 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1658 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1659 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1660 struct sk_buff *skb);
1661 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1662 struct cfg80211_csa_settings *csa_settings);
1663 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1664 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1665
1666 /* OCB code */
1667 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1668 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1669 const u8 *bssid, const u8 *addr, u32 supp_rates);
1670 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1671 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1672 struct ocb_setup *setup);
1673 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1674
1675 /* mesh code */
1676 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1677 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1678 struct sk_buff *skb);
1679 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1680 struct cfg80211_csa_settings *csa_settings);
1681 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1682
1683 /* scan/BSS handling */
1684 void ieee80211_scan_work(struct work_struct *work);
1685 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1686 const u8 *ssid, u8 ssid_len,
1687 struct ieee80211_channel **channels,
1688 unsigned int n_channels,
1689 enum nl80211_bss_scan_width scan_width);
1690 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1691 struct cfg80211_scan_request *req);
1692 void ieee80211_scan_cancel(struct ieee80211_local *local);
1693 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1694 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1695
1696 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1697 struct ieee80211_bss *
1698 ieee80211_bss_info_update(struct ieee80211_local *local,
1699 struct ieee80211_rx_status *rx_status,
1700 struct ieee80211_mgmt *mgmt,
1701 size_t len,
1702 struct ieee80211_channel *channel);
1703 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1704 struct ieee80211_bss *bss);
1705
1706 /* scheduled scan handling */
1707 int
1708 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1709 struct cfg80211_sched_scan_request *req);
1710 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1711 struct cfg80211_sched_scan_request *req);
1712 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1713 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1714 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1715
1716 /* off-channel/mgmt-tx */
1717 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1718 void ieee80211_offchannel_return(struct ieee80211_local *local);
1719 void ieee80211_roc_setup(struct ieee80211_local *local);
1720 void ieee80211_start_next_roc(struct ieee80211_local *local);
1721 void ieee80211_roc_purge(struct ieee80211_local *local,
1722 struct ieee80211_sub_if_data *sdata);
1723 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1724 struct ieee80211_channel *chan,
1725 unsigned int duration, u64 *cookie);
1726 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1727 struct wireless_dev *wdev, u64 cookie);
1728 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1729 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1730 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1731 struct wireless_dev *wdev, u64 cookie);
1732
1733 /* channel switch handling */
1734 void ieee80211_csa_finalize_work(struct work_struct *work);
1735 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1736 struct cfg80211_csa_settings *params);
1737
1738 /* interface handling */
1739 int ieee80211_iface_init(void);
1740 void ieee80211_iface_exit(void);
1741 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1742 unsigned char name_assign_type,
1743 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1744 struct vif_params *params);
1745 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1746 enum nl80211_iftype type);
1747 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1748 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1749 u32 ieee80211_idle_off(struct ieee80211_local *local);
1750 void ieee80211_recalc_idle(struct ieee80211_local *local);
1751 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1752 const int offset);
1753 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1754 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1755 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1756 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1757
1758 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1759 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1760 bool update_bss);
1761
ieee80211_sdata_running(struct ieee80211_sub_if_data * sdata)1762 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1763 {
1764 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1765 }
1766
1767 /* tx handling */
1768 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1769 void ieee80211_tx_pending(unsigned long data);
1770 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1771 struct net_device *dev);
1772 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1773 struct net_device *dev);
1774 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1775 struct net_device *dev,
1776 u32 info_flags,
1777 u32 ctrl_flags);
1778 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1779 struct sk_buff_head *skbs);
1780 struct sk_buff *
1781 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1782 struct sk_buff *skb, u32 info_flags);
1783 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1784 struct ieee80211_supported_band *sband,
1785 int retry_count, int shift, bool send_to_cooked,
1786 struct ieee80211_tx_status *status);
1787
1788 void ieee80211_check_fast_xmit(struct sta_info *sta);
1789 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1790 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1791 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1792 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
1793 const u8 *buf, size_t len,
1794 const u8 *dest, __be16 proto, bool unencrypted);
1795 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
1796 const u8 *buf, size_t len);
1797
1798 /* HT */
1799 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1800 struct ieee80211_sta_ht_cap *ht_cap);
1801 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1802 struct ieee80211_supported_band *sband,
1803 const struct ieee80211_ht_cap *ht_cap_ie,
1804 struct sta_info *sta);
1805 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1806 const u8 *da, u16 tid,
1807 u16 initiator, u16 reason_code);
1808 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1809 enum ieee80211_smps_mode smps, const u8 *da,
1810 const u8 *bssid);
1811 void ieee80211_request_smps_ap_work(struct work_struct *work);
1812 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1813 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1814 enum ieee80211_smps_mode smps_mode_new);
1815
1816 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1817 u16 initiator, u16 reason, bool stop);
1818 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1819 u16 initiator, u16 reason, bool stop);
1820 void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
1821 u8 dialog_token, u16 timeout,
1822 u16 start_seq_num, u16 ba_policy, u16 tid,
1823 u16 buf_size, bool tx, bool auto_seq,
1824 const struct ieee80211_addba_ext_ie *addbaext);
1825 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1826 enum ieee80211_agg_stop_reason reason);
1827 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1828 struct sta_info *sta,
1829 struct ieee80211_mgmt *mgmt, size_t len);
1830 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1831 struct sta_info *sta,
1832 struct ieee80211_mgmt *mgmt,
1833 size_t len);
1834 void ieee80211_process_addba_request(struct ieee80211_local *local,
1835 struct sta_info *sta,
1836 struct ieee80211_mgmt *mgmt,
1837 size_t len);
1838
1839 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1840 enum ieee80211_agg_stop_reason reason);
1841 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1842 enum ieee80211_agg_stop_reason reason);
1843 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
1844 struct tid_ampdu_tx *tid_tx);
1845 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
1846 struct tid_ampdu_tx *tid_tx);
1847 void ieee80211_ba_session_work(struct work_struct *work);
1848 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1849 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1850
1851 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1852 enum nl80211_smps_mode
1853 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
1854
1855 /* VHT */
1856 void
1857 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1858 struct ieee80211_supported_band *sband,
1859 const struct ieee80211_vht_cap *vht_cap_ie,
1860 struct sta_info *sta);
1861 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1862 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1863 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1864 enum ieee80211_sta_rx_bandwidth
1865 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
1866 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
1867 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1868 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
1869 struct ieee80211_mgmt *mgmt);
1870 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1871 struct sta_info *sta, u8 opmode,
1872 enum nl80211_band band);
1873 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1874 struct sta_info *sta, u8 opmode,
1875 enum nl80211_band band);
1876 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1877 struct ieee80211_sta_vht_cap *vht_cap);
1878 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
1879 u16 vht_mask[NL80211_VHT_NSS_MAX]);
1880 enum nl80211_chan_width
1881 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta);
1882
1883 /* HE */
1884 void
1885 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
1886 struct ieee80211_supported_band *sband,
1887 const u8 *he_cap_ie, u8 he_cap_len,
1888 struct sta_info *sta);
1889 void
1890 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
1891 const struct ieee80211_he_spr *he_spr_ie_elem);
1892
1893 void
1894 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
1895 const struct ieee80211_he_operation *he_op_ie_elem);
1896
1897 /* Spectrum management */
1898 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1899 struct ieee80211_mgmt *mgmt,
1900 size_t len);
1901 /**
1902 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1903 * @sdata: the sdata of the interface which has received the frame
1904 * @elems: parsed 802.11 elements received with the frame
1905 * @current_band: indicates the current band
1906 * @sta_flags: contains information about own capabilities and restrictions
1907 * to decide which channel switch announcements can be accepted. Only the
1908 * following subset of &enum ieee80211_sta_flags are evaluated:
1909 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1910 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1911 * %IEEE80211_STA_DISABLE_160MHZ.
1912 * @bssid: the currently connected bssid (for reporting)
1913 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1914 All of them will be filled with if success only.
1915 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1916 */
1917 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1918 struct ieee802_11_elems *elems,
1919 enum nl80211_band current_band,
1920 u32 sta_flags, u8 *bssid,
1921 struct ieee80211_csa_ie *csa_ie);
1922
1923 /* Suspend/resume and hw reconfiguration */
1924 int ieee80211_reconfig(struct ieee80211_local *local);
1925 void ieee80211_stop_device(struct ieee80211_local *local);
1926
1927 int __ieee80211_suspend(struct ieee80211_hw *hw,
1928 struct cfg80211_wowlan *wowlan);
1929
__ieee80211_resume(struct ieee80211_hw * hw)1930 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1931 {
1932 struct ieee80211_local *local = hw_to_local(hw);
1933
1934 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
1935 !test_bit(SCAN_COMPLETED, &local->scanning),
1936 "%s: resume with hardware scan still in progress\n",
1937 wiphy_name(hw->wiphy));
1938
1939 return ieee80211_reconfig(hw_to_local(hw));
1940 }
1941
1942 /* utility functions/constants */
1943 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1944 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
1945 int rate, int erp, int short_preamble,
1946 int shift);
1947 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1948 struct ieee80211_tx_queue_params *qparam,
1949 int ac);
1950 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1951 bool bss_notify, bool enable_qos);
1952 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
1953 struct sta_info *sta, struct sk_buff *skb,
1954 u32 txdata_flags);
1955
1956 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1957 struct sk_buff *skb, int tid,
1958 enum nl80211_band band, u32 txdata_flags);
1959
1960 static inline void
ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid,enum nl80211_band band,u32 txdata_flags)1961 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1962 struct sk_buff *skb, int tid,
1963 enum nl80211_band band, u32 txdata_flags)
1964 {
1965 rcu_read_lock();
1966 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band, txdata_flags);
1967 rcu_read_unlock();
1968 }
1969
ieee80211_tx_skb_tid(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid)1970 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1971 struct sk_buff *skb, int tid)
1972 {
1973 struct ieee80211_chanctx_conf *chanctx_conf;
1974
1975 rcu_read_lock();
1976 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1977 if (WARN_ON(!chanctx_conf)) {
1978 rcu_read_unlock();
1979 kfree_skb(skb);
1980 return;
1981 }
1982
1983 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1984 chanctx_conf->def.chan->band, 0);
1985 rcu_read_unlock();
1986 }
1987
ieee80211_tx_skb(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb)1988 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1989 struct sk_buff *skb)
1990 {
1991 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1992 ieee80211_tx_skb_tid(sdata, skb, 7);
1993 }
1994
1995 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1996 struct ieee802_11_elems *elems,
1997 u64 filter, u32 crc, u8 *transmitter_bssid,
1998 u8 *bss_bssid);
ieee802_11_parse_elems(const u8 * start,size_t len,bool action,struct ieee802_11_elems * elems,u8 * transmitter_bssid,u8 * bss_bssid)1999 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
2000 bool action,
2001 struct ieee802_11_elems *elems,
2002 u8 *transmitter_bssid,
2003 u8 *bss_bssid)
2004 {
2005 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0,
2006 transmitter_bssid, bss_bssid);
2007 }
2008
2009
2010 extern const int ieee802_1d_to_ac[8];
2011
ieee80211_ac_from_tid(int tid)2012 static inline int ieee80211_ac_from_tid(int tid)
2013 {
2014 return ieee802_1d_to_ac[tid & 7];
2015 }
2016
2017 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
2018 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
2019 void ieee80211_dynamic_ps_timer(struct timer_list *t);
2020 void ieee80211_send_nullfunc(struct ieee80211_local *local,
2021 struct ieee80211_sub_if_data *sdata,
2022 bool powersave);
2023 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
2024 struct ieee80211_hdr *hdr);
2025 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2026 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
2027
2028 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
2029 unsigned long queues,
2030 enum queue_stop_reason reason,
2031 bool refcounted);
2032 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
2033 struct ieee80211_sub_if_data *sdata,
2034 enum queue_stop_reason reason);
2035 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
2036 struct ieee80211_sub_if_data *sdata,
2037 enum queue_stop_reason reason);
2038 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
2039 unsigned long queues,
2040 enum queue_stop_reason reason,
2041 bool refcounted);
2042 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
2043 enum queue_stop_reason reason,
2044 bool refcounted);
2045 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
2046 enum queue_stop_reason reason,
2047 bool refcounted);
2048 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
2049 void ieee80211_add_pending_skb(struct ieee80211_local *local,
2050 struct sk_buff *skb);
2051 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
2052 struct sk_buff_head *skbs);
2053 void ieee80211_flush_queues(struct ieee80211_local *local,
2054 struct ieee80211_sub_if_data *sdata, bool drop);
2055 void __ieee80211_flush_queues(struct ieee80211_local *local,
2056 struct ieee80211_sub_if_data *sdata,
2057 unsigned int queues, bool drop);
2058
ieee80211_can_run_worker(struct ieee80211_local * local)2059 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2060 {
2061 /*
2062 * It's unsafe to try to do any work during reconfigure flow.
2063 * When the flow ends the work will be requeued.
2064 */
2065 if (local->in_reconfig)
2066 return false;
2067
2068 /*
2069 * If quiescing is set, we are racing with __ieee80211_suspend.
2070 * __ieee80211_suspend flushes the workers after setting quiescing,
2071 * and we check quiescing / suspended before enqueing new workers.
2072 * We should abort the worker to avoid the races below.
2073 */
2074 if (local->quiescing)
2075 return false;
2076
2077 /*
2078 * We might already be suspended if the following scenario occurs:
2079 * __ieee80211_suspend Control path
2080 *
2081 * if (local->quiescing)
2082 * return;
2083 * local->quiescing = true;
2084 * flush_workqueue();
2085 * queue_work(...);
2086 * local->suspended = true;
2087 * local->quiescing = false;
2088 * worker starts running...
2089 */
2090 if (local->suspended)
2091 return false;
2092
2093 return true;
2094 }
2095
2096 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2097 void ieee80211_txq_set_params(struct ieee80211_local *local);
2098 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2099 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2100 struct sta_info *sta,
2101 struct txq_info *txq, int tid);
2102 void ieee80211_txq_purge(struct ieee80211_local *local,
2103 struct txq_info *txqi);
2104 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2105 struct ieee80211_sub_if_data *sdata);
2106 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2107 struct txq_info *txqi);
2108 void ieee80211_wake_txqs(unsigned long data);
2109 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2110 u16 transaction, u16 auth_alg, u16 status,
2111 const u8 *extra, size_t extra_len, const u8 *bssid,
2112 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2113 u32 tx_flags);
2114 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2115 const u8 *da, const u8 *bssid,
2116 u16 stype, u16 reason,
2117 bool send_frame, u8 *frame_buf);
2118
2119 enum {
2120 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
2121 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
2122 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
2123 };
2124
2125 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2126 size_t buffer_len,
2127 struct ieee80211_scan_ies *ie_desc,
2128 const u8 *ie, size_t ie_len,
2129 u8 bands_used, u32 *rate_masks,
2130 struct cfg80211_chan_def *chandef,
2131 u32 flags);
2132 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2133 const u8 *src, const u8 *dst,
2134 u32 ratemask,
2135 struct ieee80211_channel *chan,
2136 const u8 *ssid, size_t ssid_len,
2137 const u8 *ie, size_t ie_len,
2138 u32 flags);
2139 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2140 struct ieee802_11_elems *elems,
2141 enum nl80211_band band, u32 *basic_rates);
2142 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2143 enum ieee80211_smps_mode smps_mode);
2144 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2145 enum ieee80211_smps_mode smps_mode);
2146 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
2147 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
2148
2149 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2150 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2151 u16 cap);
2152 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2153 const struct cfg80211_chan_def *chandef,
2154 u16 prot_mode, bool rifs_mode);
2155 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2156 const struct cfg80211_chan_def *chandef);
2157 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2158 u32 cap);
2159 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2160 const struct cfg80211_chan_def *chandef);
2161 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2162 u8 *ieee80211_ie_build_he_cap(u8 *pos,
2163 const struct ieee80211_sta_he_cap *he_cap,
2164 u8 *end);
2165 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2166 struct sk_buff *skb);
2167 u8 *ieee80211_ie_build_he_oper(u8 *pos);
2168 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2169 const struct ieee80211_supported_band *sband,
2170 const u8 *srates, int srates_len, u32 *rates);
2171 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2172 struct sk_buff *skb, bool need_basic,
2173 enum nl80211_band band);
2174 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2175 struct sk_buff *skb, bool need_basic,
2176 enum nl80211_band band);
2177 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2178
2179 /* channel management */
2180 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2181 struct cfg80211_chan_def *chandef);
2182 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw,
2183 const struct ieee80211_vht_operation *oper,
2184 const struct ieee80211_ht_operation *htop,
2185 struct cfg80211_chan_def *chandef);
2186 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2187
2188 int __must_check
2189 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
2190 const struct cfg80211_chan_def *chandef,
2191 enum ieee80211_chanctx_mode mode);
2192 int __must_check
2193 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
2194 const struct cfg80211_chan_def *chandef,
2195 enum ieee80211_chanctx_mode mode,
2196 bool radar_required);
2197 int __must_check
2198 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2199 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2200
2201 int __must_check
2202 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2203 const struct cfg80211_chan_def *chandef,
2204 u32 *changed);
2205 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2206 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2207 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2208 bool clear);
2209 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2210 struct ieee80211_chanctx *ctx);
2211
2212 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2213 struct ieee80211_chanctx *chanctx);
2214 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2215 struct ieee80211_chanctx *ctx);
2216 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2217
2218 void ieee80211_dfs_cac_timer(unsigned long data);
2219 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2220 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2221 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2222 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2223 struct cfg80211_csa_settings *csa_settings);
2224
2225 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2226 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2227 const struct ieee80211_cipher_scheme *
2228 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2229 enum nl80211_iftype iftype);
2230 int ieee80211_cs_headroom(struct ieee80211_local *local,
2231 struct cfg80211_crypto_settings *crypto,
2232 enum nl80211_iftype iftype);
2233 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2234 struct ieee80211_sub_if_data *sdata);
2235 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2236 const struct cfg80211_chan_def *chandef,
2237 enum ieee80211_chanctx_mode chanmode,
2238 u8 radar_detect);
2239 int ieee80211_max_num_channels(struct ieee80211_local *local);
2240 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta);
2241 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2242 struct ieee80211_chanctx *ctx);
2243
2244 /* TDLS */
2245 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2246 const u8 *peer, u8 action_code, u8 dialog_token,
2247 u16 status_code, u32 peer_capability,
2248 bool initiator, const u8 *extra_ies,
2249 size_t extra_ies_len);
2250 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2251 const u8 *peer, enum nl80211_tdls_operation oper);
2252 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2253 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2254 const u8 *addr, u8 oper_class,
2255 struct cfg80211_chan_def *chandef);
2256 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2257 struct net_device *dev,
2258 const u8 *addr);
2259 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2260 void ieee80211_tdls_chsw_work(struct work_struct *wk);
2261 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2262 const u8 *peer, u16 reason);
2263 const char *ieee80211_get_reason_code_string(u16 reason_code);
2264
2265 extern const struct ethtool_ops ieee80211_ethtool_ops;
2266
2267 #ifdef CONFIG_MAC80211_NOINLINE
2268 #define debug_noinline noinline
2269 #else
2270 #define debug_noinline
2271 #endif
2272
2273 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache);
2274 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache);
2275
2276 #endif /* IEEE80211_I_H */
2277