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) 2018-2020 Intel Corporation
9 */
10
11 #ifndef IEEE80211_I_H
12 #define IEEE80211_I_H
13
14 #include <linux/kernel.h>
15 #include <linux/device.h>
16 #include <linux/if_ether.h>
17 #include <linux/interrupt.h>
18 #include <linux/list.h>
19 #include <linux/netdevice.h>
20 #include <linux/skbuff.h>
21 #include <linux/workqueue.h>
22 #include <linux/types.h>
23 #include <linux/spinlock.h>
24 #include <linux/etherdevice.h>
25 #include <linux/leds.h>
26 #include <linux/idr.h>
27 #include <linux/rhashtable.h>
28 #include <net/ieee80211_radiotap.h>
29 #include <net/cfg80211.h>
30 #include <net/mac80211.h>
31 #include <net/fq.h>
32 #include "key.h"
33 #include "sta_info.h"
34 #include "debug.h"
35
36 extern const struct cfg80211_ops mac80211_config_ops;
37
38 struct ieee80211_local;
39
40 /* Maximum number of broadcast/multicast frames to buffer when some of the
41 * associated stations are using power saving. */
42 #define AP_MAX_BC_BUFFER 128
43
44 /* Maximum number of frames buffered to all STAs, including multicast frames.
45 * Note: increasing this limit increases the potential memory requirement. Each
46 * frame can be up to about 2 kB long. */
47 #define TOTAL_MAX_TX_BUFFER 512
48
49 /* Required encryption head and tailroom */
50 #define IEEE80211_ENCRYPT_HEADROOM 8
51 #define IEEE80211_ENCRYPT_TAILROOM 18
52
53 /* power level hasn't been configured (or set to automatic) */
54 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
55
56 /*
57 * Some APs experience problems when working with U-APSD. Decreasing the
58 * probability of that happening by using legacy mode for all ACs but VO isn't
59 * enough.
60 *
61 * Cisco 4410N originally forced us to enable VO by default only because it
62 * treated non-VO ACs as legacy.
63 *
64 * However some APs (notably Netgear R7000) silently reclassify packets to
65 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
66 * clients would never see some frames (e.g. ARP responses) or would fetch them
67 * accidentally after a long time.
68 *
69 * It makes little sense to enable u-APSD queues by default because it needs
70 * userspace applications to be aware of it to actually take advantage of the
71 * possible additional powersavings. Implicitly depending on driver autotrigger
72 * frame support doesn't make much sense.
73 */
74 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
75
76 #define IEEE80211_DEFAULT_MAX_SP_LEN \
77 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
78
79 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS];
80
81 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
82
83 #define IEEE80211_MAX_NAN_INSTANCE_ID 255
84
85 struct ieee80211_bss {
86 u32 device_ts_beacon, device_ts_presp;
87
88 bool wmm_used;
89 bool uapsd_supported;
90
91 #define IEEE80211_MAX_SUPP_RATES 32
92 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
93 size_t supp_rates_len;
94 struct ieee80211_rate *beacon_rate;
95
96 u32 vht_cap_info;
97
98 /*
99 * During association, we save an ERP value from a probe response so
100 * that we can feed ERP info to the driver when handling the
101 * association completes. these fields probably won't be up-to-date
102 * otherwise, you probably don't want to use them.
103 */
104 bool has_erp_value;
105 u8 erp_value;
106
107 /* Keep track of the corruption of the last beacon/probe response. */
108 u8 corrupt_data;
109
110 /* Keep track of what bits of information we have valid info for. */
111 u8 valid_data;
112 };
113
114 /**
115 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
116 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
117 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
118 *
119 * These are bss flags that are attached to a bss in the
120 * @corrupt_data field of &struct ieee80211_bss.
121 */
122 enum ieee80211_bss_corrupt_data_flags {
123 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
124 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
125 };
126
127 /**
128 * enum ieee80211_valid_data_flags - BSS valid data flags
129 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
130 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
131 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
132 *
133 * These are bss flags that are attached to a bss in the
134 * @valid_data field of &struct ieee80211_bss. They show which parts
135 * of the data structure were received as a result of an un-corrupted
136 * beacon/probe response.
137 */
138 enum ieee80211_bss_valid_data_flags {
139 IEEE80211_BSS_VALID_WMM = BIT(1),
140 IEEE80211_BSS_VALID_RATES = BIT(2),
141 IEEE80211_BSS_VALID_ERP = BIT(3)
142 };
143
144 typedef unsigned __bitwise ieee80211_tx_result;
145 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
146 #define TX_DROP ((__force ieee80211_tx_result) 1u)
147 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
148
149 #define IEEE80211_TX_UNICAST BIT(1)
150 #define IEEE80211_TX_PS_BUFFERED BIT(2)
151
152 struct ieee80211_tx_data {
153 struct sk_buff *skb;
154 struct sk_buff_head skbs;
155 struct ieee80211_local *local;
156 struct ieee80211_sub_if_data *sdata;
157 struct sta_info *sta;
158 struct ieee80211_key *key;
159 struct ieee80211_tx_rate rate;
160
161 unsigned int flags;
162 };
163
164
165 typedef unsigned __bitwise ieee80211_rx_result;
166 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
167 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
168 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
169 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
170
171 /**
172 * enum ieee80211_packet_rx_flags - packet RX flags
173 * @IEEE80211_RX_AMSDU: a-MSDU packet
174 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
175 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
176 *
177 * These are per-frame flags that are attached to a frame in the
178 * @rx_flags field of &struct ieee80211_rx_status.
179 */
180 enum ieee80211_packet_rx_flags {
181 IEEE80211_RX_AMSDU = BIT(3),
182 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
183 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
184 };
185
186 /**
187 * enum ieee80211_rx_flags - RX data flags
188 *
189 * @IEEE80211_RX_CMNTR: received on cooked monitor already
190 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
191 * to cfg80211_report_obss_beacon().
192 *
193 * These flags are used across handling multiple interfaces
194 * for a single frame.
195 */
196 enum ieee80211_rx_flags {
197 IEEE80211_RX_CMNTR = BIT(0),
198 IEEE80211_RX_BEACON_REPORTED = BIT(1),
199 };
200
201 struct ieee80211_rx_data {
202 struct list_head *list;
203 struct sk_buff *skb;
204 struct ieee80211_local *local;
205 struct ieee80211_sub_if_data *sdata;
206 struct sta_info *sta;
207 struct ieee80211_key *key;
208
209 unsigned int flags;
210
211 /*
212 * Index into sequence numbers array, 0..16
213 * since the last (16) is used for non-QoS,
214 * will be 16 on non-QoS frames.
215 */
216 int seqno_idx;
217
218 /*
219 * Index into the security IV/PN arrays, 0..16
220 * since the last (16) is used for CCMP-encrypted
221 * management frames, will be set to 16 on mgmt
222 * frames and 0 on non-QoS frames.
223 */
224 int security_idx;
225
226 union {
227 struct {
228 u32 iv32;
229 u16 iv16;
230 } tkip;
231 struct {
232 u8 pn[IEEE80211_CCMP_PN_LEN];
233 } ccm_gcm;
234 };
235 };
236
237 struct ieee80211_csa_settings {
238 const u16 *counter_offsets_beacon;
239 const u16 *counter_offsets_presp;
240
241 int n_counter_offsets_beacon;
242 int n_counter_offsets_presp;
243
244 u8 count;
245 };
246
247 struct beacon_data {
248 u8 *head, *tail;
249 int head_len, tail_len;
250 struct ieee80211_meshconf_ie *meshconf;
251 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
252 u8 cntdwn_current_counter;
253 struct rcu_head rcu_head;
254 };
255
256 struct probe_resp {
257 struct rcu_head rcu_head;
258 int len;
259 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
260 u8 data[];
261 };
262
263 struct fils_discovery_data {
264 struct rcu_head rcu_head;
265 int len;
266 u8 data[];
267 };
268
269 struct unsol_bcast_probe_resp_data {
270 struct rcu_head rcu_head;
271 int len;
272 u8 data[];
273 };
274
275 struct ps_data {
276 /* yes, this looks ugly, but guarantees that we can later use
277 * bitmap_empty :)
278 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
279 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
280 __aligned(__alignof__(unsigned long));
281 struct sk_buff_head bc_buf;
282 atomic_t num_sta_ps; /* number of stations in PS mode */
283 int dtim_count;
284 bool dtim_bc_mc;
285 };
286
287 struct ieee80211_if_ap {
288 struct beacon_data __rcu *beacon;
289 struct probe_resp __rcu *probe_resp;
290 struct fils_discovery_data __rcu *fils_discovery;
291 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp;
292
293 /* to be used after channel switch. */
294 struct cfg80211_beacon_data *next_beacon;
295 struct list_head vlans; /* write-protected with RTNL and local->mtx */
296
297 struct ps_data ps;
298 atomic_t num_mcast_sta; /* number of stations receiving multicast */
299
300 bool multicast_to_unicast;
301 };
302
303 struct ieee80211_if_wds {
304 struct sta_info *sta;
305 u8 remote_addr[ETH_ALEN];
306 };
307
308 struct ieee80211_if_vlan {
309 struct list_head list; /* write-protected with RTNL and local->mtx */
310
311 /* used for all tx if the VLAN is configured to 4-addr mode */
312 struct sta_info __rcu *sta;
313 atomic_t num_mcast_sta; /* number of stations receiving multicast */
314 };
315
316 struct mesh_stats {
317 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
318 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
319 __u32 fwded_frames; /* Mesh total forwarded frames */
320 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
321 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
322 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
323 };
324
325 #define PREQ_Q_F_START 0x1
326 #define PREQ_Q_F_REFRESH 0x2
327 struct mesh_preq_queue {
328 struct list_head list;
329 u8 dst[ETH_ALEN];
330 u8 flags;
331 };
332
333 struct ieee80211_roc_work {
334 struct list_head list;
335
336 struct ieee80211_sub_if_data *sdata;
337
338 struct ieee80211_channel *chan;
339
340 bool started, abort, hw_begun, notified;
341 bool on_channel;
342
343 unsigned long start_time;
344
345 u32 duration, req_duration;
346 struct sk_buff *frame;
347 u64 cookie, mgmt_tx_cookie;
348 enum ieee80211_roc_type type;
349 };
350
351 /* flags used in struct ieee80211_if_managed.flags */
352 enum ieee80211_sta_flags {
353 IEEE80211_STA_CONNECTION_POLL = BIT(1),
354 IEEE80211_STA_CONTROL_PORT = BIT(2),
355 IEEE80211_STA_DISABLE_HT = BIT(4),
356 IEEE80211_STA_MFP_ENABLED = BIT(6),
357 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
358 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
359 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
360 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
361 IEEE80211_STA_DISABLE_VHT = BIT(11),
362 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
363 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
364 IEEE80211_STA_DISABLE_WMM = BIT(14),
365 IEEE80211_STA_ENABLE_RRM = BIT(15),
366 IEEE80211_STA_DISABLE_HE = BIT(16),
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, waiting;
378 bool peer_confirmed;
379 bool timeout_started;
380
381 u16 sae_trans, sae_status;
382 size_t data_len;
383 u8 data[];
384 };
385
386 struct ieee80211_mgd_assoc_data {
387 struct cfg80211_bss *bss;
388 const u8 *supp_rates;
389
390 unsigned long timeout;
391 int tries;
392
393 u16 capability;
394 u8 prev_bssid[ETH_ALEN];
395 u8 ssid[IEEE80211_MAX_SSID_LEN];
396 u8 ssid_len;
397 u8 supp_rates_len;
398 bool wmm, uapsd;
399 bool need_beacon;
400 bool synced;
401 bool timeout_started;
402
403 u8 ap_ht_param;
404
405 struct ieee80211_vht_cap ap_vht_cap;
406
407 u8 fils_nonces[2 * FILS_NONCE_LEN];
408 u8 fils_kek[FILS_MAX_KEK_LEN];
409 size_t fils_kek_len;
410
411 size_t ie_len;
412 u8 ie[];
413 };
414
415 struct ieee80211_sta_tx_tspec {
416 /* timestamp of the first packet in the time slice */
417 unsigned long time_slice_start;
418
419 u32 admitted_time; /* in usecs, unlike over the air */
420 u8 tsid;
421 s8 up; /* signed to be able to invalidate with -1 during teardown */
422
423 /* consumed TX time in microseconds in the time slice */
424 u32 consumed_tx_time;
425 enum {
426 TX_TSPEC_ACTION_NONE = 0,
427 TX_TSPEC_ACTION_DOWNGRADE,
428 TX_TSPEC_ACTION_STOP_DOWNGRADE,
429 } action;
430 bool downgraded;
431 };
432
433 DECLARE_EWMA(beacon_signal, 4, 4)
434
435 struct ieee80211_if_managed {
436 struct timer_list timer;
437 struct timer_list conn_mon_timer;
438 struct timer_list bcn_mon_timer;
439 struct timer_list chswitch_timer;
440 struct work_struct monitor_work;
441 struct work_struct chswitch_work;
442 struct work_struct beacon_connection_loss_work;
443 struct work_struct csa_connection_drop_work;
444
445 unsigned long beacon_timeout;
446 unsigned long probe_timeout;
447 int probe_send_count;
448 bool nullfunc_failed;
449 bool connection_loss;
450
451 struct cfg80211_bss *associated;
452 struct ieee80211_mgd_auth_data *auth_data;
453 struct ieee80211_mgd_assoc_data *assoc_data;
454
455 u8 bssid[ETH_ALEN] __aligned(2);
456
457 bool powersave; /* powersave requested for this iface */
458 bool broken_ap; /* AP is broken -- turn off powersave */
459 bool have_beacon;
460 u8 dtim_period;
461 enum ieee80211_smps_mode req_smps, /* requested smps mode */
462 driver_smps_mode; /* smps mode request */
463
464 struct work_struct request_smps_work;
465
466 unsigned int flags;
467
468 bool csa_waiting_bcn;
469 bool csa_ignored_same_chan;
470
471 bool beacon_crc_valid;
472 u32 beacon_crc;
473
474 bool status_acked;
475 bool status_received;
476 __le16 status_fc;
477
478 enum {
479 IEEE80211_MFP_DISABLED,
480 IEEE80211_MFP_OPTIONAL,
481 IEEE80211_MFP_REQUIRED
482 } mfp; /* management frame protection */
483
484 /*
485 * Bitmask of enabled u-apsd queues,
486 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
487 * to take effect.
488 */
489 unsigned int uapsd_queues;
490
491 /*
492 * Maximum number of buffered frames AP can deliver during a
493 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
494 * Needs a new association to take effect.
495 */
496 unsigned int uapsd_max_sp_len;
497
498 int wmm_last_param_set;
499 int mu_edca_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 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */
537 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */
538
539 /* TDLS support */
540 u8 tdls_peer[ETH_ALEN] __aligned(2);
541 struct delayed_work tdls_peer_del_work;
542 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
543 struct sk_buff *teardown_skb; /* A copy to send through the AP */
544 spinlock_t teardown_lock; /* To lock changing teardown_skb */
545 bool tdls_chan_switch_prohibited;
546 bool tdls_wider_bw_prohibited;
547
548 /* WMM-AC TSPEC support */
549 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
550 /* Use a separate work struct so that we can do something here
551 * while the sdata->work is flushing the queues, for example.
552 * otherwise, in scenarios where we hardly get any traffic out
553 * on the BE queue, but there's a lot of VO traffic, we might
554 * get stuck in a downgraded situation and flush takes forever.
555 */
556 struct delayed_work tx_tspec_wk;
557
558 /* Information elements from the last transmitted (Re)Association
559 * Request frame.
560 */
561 u8 *assoc_req_ies;
562 size_t assoc_req_ies_len;
563 };
564
565 struct ieee80211_if_ibss {
566 struct timer_list timer;
567 struct work_struct csa_connection_drop_work;
568
569 unsigned long last_scan_completed;
570
571 u32 basic_rates;
572
573 bool fixed_bssid;
574 bool fixed_channel;
575 bool privacy;
576
577 bool control_port;
578 bool userspace_handles_dfs;
579
580 u8 bssid[ETH_ALEN] __aligned(2);
581 u8 ssid[IEEE80211_MAX_SSID_LEN];
582 u8 ssid_len, ie_len;
583 u8 *ie;
584 struct cfg80211_chan_def chandef;
585
586 unsigned long ibss_join_req;
587 /* probe response/beacon for IBSS */
588 struct beacon_data __rcu *presp;
589
590 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
591 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
592
593 spinlock_t incomplete_lock;
594 struct list_head incomplete_stations;
595
596 enum {
597 IEEE80211_IBSS_MLME_SEARCH,
598 IEEE80211_IBSS_MLME_JOINED,
599 } state;
600 };
601
602 /**
603 * struct ieee80211_if_ocb - OCB mode state
604 *
605 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
606 * @wrkq_flags: OCB deferred task action
607 * @incomplete_lock: delayed STA insertion lock
608 * @incomplete_stations: list of STAs waiting for delayed insertion
609 * @joined: indication if the interface is connected to an OCB network
610 */
611 struct ieee80211_if_ocb {
612 struct timer_list housekeeping_timer;
613 unsigned long wrkq_flags;
614
615 spinlock_t incomplete_lock;
616 struct list_head incomplete_stations;
617
618 bool joined;
619 };
620
621 /**
622 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
623 *
624 * these declarations define the interface, which enables
625 * vendor-specific mesh synchronization
626 *
627 */
628 struct ieee802_11_elems;
629 struct ieee80211_mesh_sync_ops {
630 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
631 u16 stype,
632 struct ieee80211_mgmt *mgmt,
633 struct ieee802_11_elems *elems,
634 struct ieee80211_rx_status *rx_status);
635
636 /* should be called with beacon_data under RCU read lock */
637 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
638 struct beacon_data *beacon);
639 /* add other framework functions here */
640 };
641
642 struct mesh_csa_settings {
643 struct rcu_head rcu_head;
644 struct cfg80211_csa_settings settings;
645 };
646
647 /**
648 * struct mesh_table
649 *
650 * @known_gates: list of known mesh gates and their mpaths by the station. The
651 * gate's mpath may or may not be resolved and active.
652 * @gates_lock: protects updates to known_gates
653 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr
654 * @walk_head: linked list containing all mesh_path objects
655 * @walk_lock: lock protecting walk_head
656 * @entries: number of entries in the table
657 */
658 struct mesh_table {
659 struct hlist_head known_gates;
660 spinlock_t gates_lock;
661 struct rhashtable rhead;
662 struct hlist_head walk_head;
663 spinlock_t walk_lock;
664 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */
665 };
666
667 struct ieee80211_if_mesh {
668 struct timer_list housekeeping_timer;
669 struct timer_list mesh_path_timer;
670 struct timer_list mesh_path_root_timer;
671
672 unsigned long wrkq_flags;
673 unsigned long mbss_changed;
674
675 bool userspace_handles_dfs;
676
677 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
678 size_t mesh_id_len;
679 /* Active Path Selection Protocol Identifier */
680 u8 mesh_pp_id;
681 /* Active Path Selection Metric Identifier */
682 u8 mesh_pm_id;
683 /* Congestion Control Mode Identifier */
684 u8 mesh_cc_id;
685 /* Synchronization Protocol Identifier */
686 u8 mesh_sp_id;
687 /* Authentication Protocol Identifier */
688 u8 mesh_auth_id;
689 /* Local mesh Sequence Number */
690 u32 sn;
691 /* Last used PREQ ID */
692 u32 preq_id;
693 atomic_t mpaths;
694 /* Timestamp of last SN update */
695 unsigned long last_sn_update;
696 /* Time when it's ok to send next PERR */
697 unsigned long next_perr;
698 /* Timestamp of last PREQ sent */
699 unsigned long last_preq;
700 struct mesh_rmc *rmc;
701 spinlock_t mesh_preq_queue_lock;
702 struct mesh_preq_queue preq_queue;
703 int preq_queue_len;
704 struct mesh_stats mshstats;
705 struct mesh_config mshcfg;
706 atomic_t estab_plinks;
707 u32 mesh_seqnum;
708 bool accepting_plinks;
709 int num_gates;
710 struct beacon_data __rcu *beacon;
711 const u8 *ie;
712 u8 ie_len;
713 enum {
714 IEEE80211_MESH_SEC_NONE = 0x0,
715 IEEE80211_MESH_SEC_AUTHED = 0x1,
716 IEEE80211_MESH_SEC_SECURED = 0x2,
717 } security;
718 bool user_mpm;
719 /* Extensible Synchronization Framework */
720 const struct ieee80211_mesh_sync_ops *sync_ops;
721 s64 sync_offset_clockdrift_max;
722 spinlock_t sync_offset_lock;
723 /* mesh power save */
724 enum nl80211_mesh_power_mode nonpeer_pm;
725 int ps_peers_light_sleep;
726 int ps_peers_deep_sleep;
727 struct ps_data ps;
728 /* Channel Switching Support */
729 struct mesh_csa_settings __rcu *csa;
730 enum {
731 IEEE80211_MESH_CSA_ROLE_NONE,
732 IEEE80211_MESH_CSA_ROLE_INIT,
733 IEEE80211_MESH_CSA_ROLE_REPEATER,
734 } csa_role;
735 u8 chsw_ttl;
736 u16 pre_value;
737
738 /* offset from skb->data while building IE */
739 int meshconf_offset;
740
741 struct mesh_table mesh_paths;
742 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */
743 int mesh_paths_generation;
744 int mpp_paths_generation;
745 };
746
747 #ifdef CONFIG_MAC80211_MESH
748 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
749 do { (msh)->mshstats.name++; } while (0)
750 #else
751 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
752 do { } while (0)
753 #endif
754
755 /**
756 * enum ieee80211_sub_if_data_flags - virtual interface flags
757 *
758 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
759 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
760 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
761 * associated stations and deliver multicast frames both
762 * back to wireless media and to the local net stack.
763 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
764 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
765 */
766 enum ieee80211_sub_if_data_flags {
767 IEEE80211_SDATA_ALLMULTI = BIT(0),
768 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
769 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
770 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
771 IEEE80211_SDATA_IN_DRIVER = BIT(5),
772 };
773
774 /**
775 * enum ieee80211_sdata_state_bits - virtual interface state bits
776 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
777 * mirrors netif_running() but is separate for interface type
778 * change handling while the interface is up
779 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
780 * mode, so queues are stopped
781 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
782 * to offchannel, reset when offchannel returns
783 */
784 enum ieee80211_sdata_state_bits {
785 SDATA_STATE_RUNNING,
786 SDATA_STATE_OFFCHANNEL,
787 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
788 };
789
790 /**
791 * enum ieee80211_chanctx_mode - channel context configuration mode
792 *
793 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
794 * multiple interfaces
795 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
796 * only by a single interface. This can be used for example for
797 * non-fixed channel IBSS.
798 */
799 enum ieee80211_chanctx_mode {
800 IEEE80211_CHANCTX_SHARED,
801 IEEE80211_CHANCTX_EXCLUSIVE
802 };
803
804 /**
805 * enum ieee80211_chanctx_replace_state - channel context replacement state
806 *
807 * This is used for channel context in-place reservations that require channel
808 * context switch/swap.
809 *
810 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
811 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
812 * by a (not yet registered) channel context pointed by %replace_ctx.
813 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
814 * replaces an existing channel context pointed to by %replace_ctx.
815 */
816 enum ieee80211_chanctx_replace_state {
817 IEEE80211_CHANCTX_REPLACE_NONE,
818 IEEE80211_CHANCTX_WILL_BE_REPLACED,
819 IEEE80211_CHANCTX_REPLACES_OTHER,
820 };
821
822 struct ieee80211_chanctx {
823 struct list_head list;
824 struct rcu_head rcu_head;
825
826 struct list_head assigned_vifs;
827 struct list_head reserved_vifs;
828
829 enum ieee80211_chanctx_replace_state replace_state;
830 struct ieee80211_chanctx *replace_ctx;
831
832 enum ieee80211_chanctx_mode mode;
833 bool driver_present;
834
835 struct ieee80211_chanctx_conf conf;
836 };
837
838 struct mac80211_qos_map {
839 struct cfg80211_qos_map qos_map;
840 struct rcu_head rcu_head;
841 };
842
843 enum txq_info_flags {
844 IEEE80211_TXQ_STOP,
845 IEEE80211_TXQ_AMPDU,
846 IEEE80211_TXQ_NO_AMSDU,
847 IEEE80211_TXQ_STOP_NETIF_TX,
848 };
849
850 /**
851 * struct txq_info - per tid queue
852 *
853 * @tin: contains packets split into multiple flows
854 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
855 * a fq_flow which is already owned by a different tin
856 * @def_cvars: codel vars for @def_flow
857 * @frags: used to keep fragments created after dequeue
858 * @schedule_order: used with ieee80211_local->active_txqs
859 * @schedule_round: counter to prevent infinite loops on TXQ scheduling
860 */
861 struct txq_info {
862 struct fq_tin tin;
863 struct fq_flow def_flow;
864 struct codel_vars def_cvars;
865 struct codel_stats cstats;
866 struct sk_buff_head frags;
867 struct list_head schedule_order;
868 u16 schedule_round;
869 unsigned long flags;
870
871 /* keep last! */
872 struct ieee80211_txq txq;
873 };
874
875 struct ieee80211_if_mntr {
876 u32 flags;
877 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
878
879 struct list_head list;
880 };
881
882 /**
883 * struct ieee80211_if_nan - NAN state
884 *
885 * @conf: current NAN configuration
886 * @func_ids: a bitmap of available instance_id's
887 */
888 struct ieee80211_if_nan {
889 struct cfg80211_nan_conf conf;
890
891 /* protects function_inst_ids */
892 spinlock_t func_lock;
893 struct idr function_inst_ids;
894 };
895
896 struct ieee80211_sub_if_data {
897 struct list_head list;
898
899 struct wireless_dev wdev;
900
901 /* keys */
902 struct list_head key_list;
903
904 /* count for keys needing tailroom space allocation */
905 int crypto_tx_tailroom_needed_cnt;
906 int crypto_tx_tailroom_pending_dec;
907 struct delayed_work dec_tailroom_needed_wk;
908
909 struct net_device *dev;
910 struct ieee80211_local *local;
911
912 unsigned int flags;
913
914 unsigned long state;
915
916 char name[IFNAMSIZ];
917
918 struct ieee80211_fragment_cache frags;
919
920 /* TID bitmap for NoAck policy */
921 u16 noack_map;
922
923 /* bit field of ACM bits (BIT(802.1D tag)) */
924 u8 wmm_acm;
925
926 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS +
927 NUM_DEFAULT_MGMT_KEYS +
928 NUM_DEFAULT_BEACON_KEYS];
929 struct ieee80211_key __rcu *default_unicast_key;
930 struct ieee80211_key __rcu *default_multicast_key;
931 struct ieee80211_key __rcu *default_mgmt_key;
932 struct ieee80211_key __rcu *default_beacon_key;
933
934 u16 sequence_number;
935 __be16 control_port_protocol;
936 bool control_port_no_encrypt;
937 bool control_port_no_preauth;
938 bool control_port_over_nl80211;
939 int encrypt_headroom;
940
941 atomic_t num_tx_queued;
942 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
943 struct mac80211_qos_map __rcu *qos_map;
944
945 struct work_struct csa_finalize_work;
946 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
947 struct cfg80211_chan_def csa_chandef;
948
949 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
950 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
951
952 /* context reservation -- protected with chanctx_mtx */
953 struct ieee80211_chanctx *reserved_chanctx;
954 struct cfg80211_chan_def reserved_chandef;
955 bool reserved_radar_required;
956 bool reserved_ready;
957
958 /* used to reconfigure hardware SM PS */
959 struct work_struct recalc_smps;
960
961 struct work_struct work;
962 struct sk_buff_head skb_queue;
963
964 u8 needed_rx_chains;
965 enum ieee80211_smps_mode smps_mode;
966
967 int user_power_level; /* in dBm */
968 int ap_power_level; /* in dBm */
969
970 bool radar_required;
971 struct delayed_work dfs_cac_timer_work;
972
973 /*
974 * AP this belongs to: self in AP mode and
975 * corresponding AP in VLAN mode, NULL for
976 * all others (might be needed later in IBSS)
977 */
978 struct ieee80211_if_ap *bss;
979
980 /* bitmap of allowed (non-MCS) rate indexes for rate control */
981 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
982
983 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
984 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
985
986 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
987 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
988
989 /* Beacon frame (non-MCS) rate (as a bitmap) */
990 u32 beacon_rateidx_mask[NUM_NL80211_BANDS];
991 bool beacon_rate_set;
992
993 union {
994 struct ieee80211_if_ap ap;
995 struct ieee80211_if_wds wds;
996 struct ieee80211_if_vlan vlan;
997 struct ieee80211_if_managed mgd;
998 struct ieee80211_if_ibss ibss;
999 struct ieee80211_if_mesh mesh;
1000 struct ieee80211_if_ocb ocb;
1001 struct ieee80211_if_mntr mntr;
1002 struct ieee80211_if_nan nan;
1003 } u;
1004
1005 #ifdef CONFIG_MAC80211_DEBUGFS
1006 struct {
1007 struct dentry *subdir_stations;
1008 struct dentry *default_unicast_key;
1009 struct dentry *default_multicast_key;
1010 struct dentry *default_mgmt_key;
1011 struct dentry *default_beacon_key;
1012 } debugfs;
1013 #endif
1014
1015 /* must be last, dynamically sized area in this! */
1016 struct ieee80211_vif vif;
1017 };
1018
1019 static inline
vif_to_sdata(struct ieee80211_vif * p)1020 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
1021 {
1022 return container_of(p, struct ieee80211_sub_if_data, vif);
1023 }
1024
sdata_lock(struct ieee80211_sub_if_data * sdata)1025 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
1026 __acquires(&sdata->wdev.mtx)
1027 {
1028 mutex_lock(&sdata->wdev.mtx);
1029 __acquire(&sdata->wdev.mtx);
1030 }
1031
sdata_unlock(struct ieee80211_sub_if_data * sdata)1032 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
1033 __releases(&sdata->wdev.mtx)
1034 {
1035 mutex_unlock(&sdata->wdev.mtx);
1036 __release(&sdata->wdev.mtx);
1037 }
1038
1039 #define sdata_dereference(p, sdata) \
1040 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
1041
1042 static inline void
sdata_assert_lock(struct ieee80211_sub_if_data * sdata)1043 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
1044 {
1045 lockdep_assert_held(&sdata->wdev.mtx);
1046 }
1047
1048 static inline int
ieee80211_chandef_get_shift(struct cfg80211_chan_def * chandef)1049 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1050 {
1051 switch (chandef->width) {
1052 case NL80211_CHAN_WIDTH_5:
1053 return 2;
1054 case NL80211_CHAN_WIDTH_10:
1055 return 1;
1056 default:
1057 return 0;
1058 }
1059 }
1060
1061 static inline int
ieee80211_vif_get_shift(struct ieee80211_vif * vif)1062 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1063 {
1064 struct ieee80211_chanctx_conf *chanctx_conf;
1065 int shift = 0;
1066
1067 rcu_read_lock();
1068 chanctx_conf = rcu_dereference(vif->chanctx_conf);
1069 if (chanctx_conf)
1070 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1071 rcu_read_unlock();
1072
1073 return shift;
1074 }
1075
1076 enum {
1077 IEEE80211_RX_MSG = 1,
1078 IEEE80211_TX_STATUS_MSG = 2,
1079 };
1080
1081 enum queue_stop_reason {
1082 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1083 IEEE80211_QUEUE_STOP_REASON_PS,
1084 IEEE80211_QUEUE_STOP_REASON_CSA,
1085 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1086 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1087 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1088 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1089 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1090 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1091 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1092 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE,
1093
1094 IEEE80211_QUEUE_STOP_REASONS,
1095 };
1096
1097 #ifdef CONFIG_MAC80211_LEDS
1098 struct tpt_led_trigger {
1099 char name[32];
1100 const struct ieee80211_tpt_blink *blink_table;
1101 unsigned int blink_table_len;
1102 struct timer_list timer;
1103 struct ieee80211_local *local;
1104 unsigned long prev_traffic;
1105 unsigned long tx_bytes, rx_bytes;
1106 unsigned int active, want;
1107 bool running;
1108 };
1109 #endif
1110
1111 /**
1112 * mac80211 scan flags - currently active scan mode
1113 *
1114 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1115 * well be on the operating channel
1116 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1117 * determine if we are on the operating channel or not
1118 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1119 * channel. This should not interrupt normal traffic.
1120 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1121 * that the scan completed.
1122 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1123 * a scan complete for an aborted scan.
1124 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1125 * cancelled.
1126 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR
1127 * and could send a probe request after receiving a beacon.
1128 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request
1129 */
1130 enum {
1131 SCAN_SW_SCANNING,
1132 SCAN_HW_SCANNING,
1133 SCAN_ONCHANNEL_SCANNING,
1134 SCAN_COMPLETED,
1135 SCAN_ABORTED,
1136 SCAN_HW_CANCELLED,
1137 SCAN_BEACON_WAIT,
1138 SCAN_BEACON_DONE,
1139 };
1140
1141 /**
1142 * enum mac80211_scan_state - scan state machine states
1143 *
1144 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1145 * determines if we should keep on scanning or switch back to the
1146 * operating channel
1147 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1148 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1149 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1150 * send out data
1151 * @SCAN_RESUME: Resume the scan and scan the next channel
1152 * @SCAN_ABORT: Abort the scan and go back to operating channel
1153 */
1154 enum mac80211_scan_state {
1155 SCAN_DECISION,
1156 SCAN_SET_CHANNEL,
1157 SCAN_SEND_PROBE,
1158 SCAN_SUSPEND,
1159 SCAN_RESUME,
1160 SCAN_ABORT,
1161 };
1162
1163 struct ieee80211_local {
1164 /* embed the driver visible part.
1165 * don't cast (use the static inlines below), but we keep
1166 * it first anyway so they become a no-op */
1167 struct ieee80211_hw hw;
1168
1169 struct fq fq;
1170 struct codel_vars *cvars;
1171 struct codel_params cparams;
1172
1173 /* protects active_txqs and txqi->schedule_order */
1174 spinlock_t active_txq_lock[IEEE80211_NUM_ACS];
1175 struct list_head active_txqs[IEEE80211_NUM_ACS];
1176 u16 schedule_round[IEEE80211_NUM_ACS];
1177
1178 u16 airtime_flags;
1179 u32 aql_txq_limit_low[IEEE80211_NUM_ACS];
1180 u32 aql_txq_limit_high[IEEE80211_NUM_ACS];
1181 u32 aql_threshold;
1182 atomic_t aql_total_pending_airtime;
1183
1184 const struct ieee80211_ops *ops;
1185
1186 /*
1187 * private workqueue to mac80211. mac80211 makes this accessible
1188 * via ieee80211_queue_work()
1189 */
1190 struct workqueue_struct *workqueue;
1191
1192 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1193 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1194 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1195 spinlock_t queue_stop_reason_lock;
1196
1197 int open_count;
1198 int monitors, cooked_mntrs;
1199 /* number of interfaces with corresponding FIF_ flags */
1200 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1201 fif_probe_req;
1202 bool probe_req_reg;
1203 bool rx_mcast_action_reg;
1204 unsigned int filter_flags; /* FIF_* */
1205
1206 bool wiphy_ciphers_allocated;
1207
1208 bool use_chanctx;
1209
1210 /* protects the aggregated multicast list and filter calls */
1211 spinlock_t filter_lock;
1212
1213 /* used for uploading changed mc list */
1214 struct work_struct reconfig_filter;
1215
1216 /* aggregated multicast list */
1217 struct netdev_hw_addr_list mc_list;
1218
1219 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1220
1221 /*
1222 * suspended is true if we finished all the suspend _and_ we have
1223 * not yet come up from resume. This is to be used by mac80211
1224 * to ensure driver sanity during suspend and mac80211's own
1225 * sanity. It can eventually be used for WoW as well.
1226 */
1227 bool suspended;
1228
1229 /*
1230 * Resuming is true while suspended, but when we're reprogramming the
1231 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1232 * again even though some other parts of the stack are still suspended
1233 * and we still drop received frames to avoid waking the stack.
1234 */
1235 bool resuming;
1236
1237 /*
1238 * quiescing is true during the suspend process _only_ to
1239 * ease timer cancelling etc.
1240 */
1241 bool quiescing;
1242
1243 /* device is started */
1244 bool started;
1245
1246 /* device is during a HW reconfig */
1247 bool in_reconfig;
1248
1249 /* wowlan is enabled -- don't reconfig on resume */
1250 bool wowlan;
1251
1252 struct work_struct radar_detected_work;
1253
1254 /* number of RX chains the hardware has */
1255 u8 rx_chains;
1256
1257 /* bitmap of which sbands were copied */
1258 u8 sband_allocated;
1259
1260 int tx_headroom; /* required headroom for hardware/radiotap */
1261
1262 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1263 * added to skb_queue will be processed, but frames in
1264 * skb_queue_unreliable may be dropped if the total length of these
1265 * queues increases over the limit. */
1266 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1267 struct tasklet_struct tasklet;
1268 struct sk_buff_head skb_queue;
1269 struct sk_buff_head skb_queue_unreliable;
1270
1271 spinlock_t rx_path_lock;
1272
1273 /* Station data */
1274 /*
1275 * The mutex only protects the list, hash table and
1276 * counter, reads are done with RCU.
1277 */
1278 struct mutex sta_mtx;
1279 spinlock_t tim_lock;
1280 unsigned long num_sta;
1281 struct list_head sta_list;
1282 struct rhltable sta_hash;
1283 struct timer_list sta_cleanup;
1284 int sta_generation;
1285
1286 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1287 struct tasklet_struct tx_pending_tasklet;
1288 struct tasklet_struct wake_txqs_tasklet;
1289
1290 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1291
1292 /* number of interfaces with allmulti RX */
1293 atomic_t iff_allmultis;
1294
1295 struct rate_control_ref *rate_ctrl;
1296
1297 struct arc4_ctx wep_tx_ctx;
1298 struct arc4_ctx wep_rx_ctx;
1299 u32 wep_iv;
1300
1301 /* see iface.c */
1302 struct list_head interfaces;
1303 struct list_head mon_list; /* only that are IFF_UP && !cooked */
1304 struct mutex iflist_mtx;
1305
1306 /*
1307 * Key mutex, protects sdata's key_list and sta_info's
1308 * key pointers and ptk_idx (write access, they're RCU.)
1309 */
1310 struct mutex key_mtx;
1311
1312 /* mutex for scan and work locking */
1313 struct mutex mtx;
1314
1315 /* Scanning and BSS list */
1316 unsigned long scanning;
1317 struct cfg80211_ssid scan_ssid;
1318 struct cfg80211_scan_request *int_scan_req;
1319 struct cfg80211_scan_request __rcu *scan_req;
1320 struct ieee80211_scan_request *hw_scan_req;
1321 struct cfg80211_chan_def scan_chandef;
1322 enum nl80211_band hw_scan_band;
1323 int scan_channel_idx;
1324 int scan_ies_len;
1325 int hw_scan_ies_bufsize;
1326 struct cfg80211_scan_info scan_info;
1327
1328 struct work_struct sched_scan_stopped_work;
1329 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1330 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1331 u8 scan_addr[ETH_ALEN];
1332
1333 unsigned long leave_oper_channel_time;
1334 enum mac80211_scan_state next_scan_state;
1335 struct delayed_work scan_work;
1336 struct ieee80211_sub_if_data __rcu *scan_sdata;
1337 /* For backward compatibility only -- do not use */
1338 struct cfg80211_chan_def _oper_chandef;
1339
1340 /* Temporary remain-on-channel for off-channel operations */
1341 struct ieee80211_channel *tmp_channel;
1342
1343 /* channel contexts */
1344 struct list_head chanctx_list;
1345 struct mutex chanctx_mtx;
1346
1347 #ifdef CONFIG_MAC80211_LEDS
1348 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1349 struct led_trigger tpt_led;
1350 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1351 atomic_t radio_led_active, tpt_led_active;
1352 struct tpt_led_trigger *tpt_led_trigger;
1353 #endif
1354
1355 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1356 /* SNMP counters */
1357 /* dot11CountersTable */
1358 u32 dot11TransmittedFragmentCount;
1359 u32 dot11MulticastTransmittedFrameCount;
1360 u32 dot11FailedCount;
1361 u32 dot11RetryCount;
1362 u32 dot11MultipleRetryCount;
1363 u32 dot11FrameDuplicateCount;
1364 u32 dot11ReceivedFragmentCount;
1365 u32 dot11MulticastReceivedFrameCount;
1366 u32 dot11TransmittedFrameCount;
1367
1368 /* TX/RX handler statistics */
1369 unsigned int tx_handlers_drop;
1370 unsigned int tx_handlers_queued;
1371 unsigned int tx_handlers_drop_wep;
1372 unsigned int tx_handlers_drop_not_assoc;
1373 unsigned int tx_handlers_drop_unauth_port;
1374 unsigned int rx_handlers_drop;
1375 unsigned int rx_handlers_queued;
1376 unsigned int rx_handlers_drop_nullfunc;
1377 unsigned int rx_handlers_drop_defrag;
1378 unsigned int tx_expand_skb_head;
1379 unsigned int tx_expand_skb_head_cloned;
1380 unsigned int rx_expand_skb_head_defrag;
1381 unsigned int rx_handlers_fragments;
1382 unsigned int tx_status_drop;
1383 #define I802_DEBUG_INC(c) (c)++
1384 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1385 #define I802_DEBUG_INC(c) do { } while (0)
1386 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1387
1388
1389 int total_ps_buffered; /* total number of all buffered unicast and
1390 * multicast packets for power saving stations
1391 */
1392
1393 bool pspolling;
1394 /*
1395 * PS can only be enabled when we have exactly one managed
1396 * interface (and monitors) in PS, this then points there.
1397 */
1398 struct ieee80211_sub_if_data *ps_sdata;
1399 struct work_struct dynamic_ps_enable_work;
1400 struct work_struct dynamic_ps_disable_work;
1401 struct timer_list dynamic_ps_timer;
1402 struct notifier_block ifa_notifier;
1403 struct notifier_block ifa6_notifier;
1404
1405 /*
1406 * The dynamic ps timeout configured from user space via WEXT -
1407 * this will override whatever chosen by mac80211 internally.
1408 */
1409 int dynamic_ps_forced_timeout;
1410
1411 int user_power_level; /* in dBm, for all interfaces */
1412
1413 enum ieee80211_smps_mode smps_mode;
1414
1415 struct work_struct restart_work;
1416
1417 #ifdef CONFIG_MAC80211_DEBUGFS
1418 struct local_debugfsdentries {
1419 struct dentry *rcdir;
1420 struct dentry *keys;
1421 } debugfs;
1422 bool force_tx_status;
1423 #endif
1424
1425 /*
1426 * Remain-on-channel support
1427 */
1428 struct delayed_work roc_work;
1429 struct list_head roc_list;
1430 struct work_struct hw_roc_start, hw_roc_done;
1431 unsigned long hw_roc_start_time;
1432 u64 roc_cookie_counter;
1433
1434 struct idr ack_status_frames;
1435 spinlock_t ack_status_lock;
1436
1437 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1438
1439 /* virtual monitor interface */
1440 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1441 struct cfg80211_chan_def monitor_chandef;
1442
1443 /* extended capabilities provided by mac80211 */
1444 u8 ext_capa[8];
1445
1446 /* TDLS channel switch */
1447 struct work_struct tdls_chsw_work;
1448 struct sk_buff_head skb_queue_tdls_chsw;
1449 };
1450
1451 static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(struct net_device * dev)1452 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1453 {
1454 return netdev_priv(dev);
1455 }
1456
1457 static inline struct ieee80211_sub_if_data *
IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev * wdev)1458 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1459 {
1460 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1461 }
1462
1463 static inline struct ieee80211_supported_band *
ieee80211_get_sband(struct ieee80211_sub_if_data * sdata)1464 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1465 {
1466 struct ieee80211_local *local = sdata->local;
1467 struct ieee80211_chanctx_conf *chanctx_conf;
1468 enum nl80211_band band;
1469
1470 rcu_read_lock();
1471 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1472
1473 if (!chanctx_conf) {
1474 rcu_read_unlock();
1475 return NULL;
1476 }
1477
1478 band = chanctx_conf->def.chan->band;
1479 rcu_read_unlock();
1480
1481 return local->hw.wiphy->bands[band];
1482 }
1483
1484 /* this struct holds the value parsing from channel switch IE */
1485 struct ieee80211_csa_ie {
1486 struct cfg80211_chan_def chandef;
1487 u8 mode;
1488 u8 count;
1489 u8 ttl;
1490 u16 pre_value;
1491 u16 reason_code;
1492 u32 max_switch_time;
1493 };
1494
1495 /* Parsed Information Elements */
1496 struct ieee802_11_elems {
1497 const u8 *ie_start;
1498 size_t total_len;
1499
1500 /* pointers to IEs */
1501 const struct ieee80211_tdls_lnkie *lnk_id;
1502 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1503 const u8 *ext_capab;
1504 const u8 *ssid;
1505 const u8 *supp_rates;
1506 const u8 *ds_params;
1507 const struct ieee80211_tim_ie *tim;
1508 const u8 *rsn;
1509 const u8 *rsnx;
1510 const u8 *erp_info;
1511 const u8 *ext_supp_rates;
1512 const u8 *wmm_info;
1513 const u8 *wmm_param;
1514 const struct ieee80211_ht_cap *ht_cap_elem;
1515 const struct ieee80211_ht_operation *ht_operation;
1516 const struct ieee80211_vht_cap *vht_cap_elem;
1517 const struct ieee80211_vht_operation *vht_operation;
1518 const struct ieee80211_meshconf_ie *mesh_config;
1519 const u8 *he_cap;
1520 const struct ieee80211_he_operation *he_operation;
1521 const struct ieee80211_he_spr *he_spr;
1522 const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1523 const struct ieee80211_he_6ghz_capa *he_6ghz_capa;
1524 const u8 *uora_element;
1525 const u8 *mesh_id;
1526 const u8 *peering;
1527 const __le16 *awake_window;
1528 const u8 *preq;
1529 const u8 *prep;
1530 const u8 *perr;
1531 const struct ieee80211_rann_ie *rann;
1532 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1533 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1534 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1535 const u8 *max_channel_switch_time;
1536 const u8 *country_elem;
1537 const u8 *pwr_constr_elem;
1538 const u8 *cisco_dtpc_elem;
1539 const struct ieee80211_timeout_interval_ie *timeout_int;
1540 const u8 *opmode_notif;
1541 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1542 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1543 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1544 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
1545 const struct ieee80211_bssid_index *bssid_index;
1546 u8 max_bssid_indicator;
1547 u8 dtim_count;
1548 u8 dtim_period;
1549 const struct ieee80211_addba_ext_ie *addba_ext_ie;
1550 const struct ieee80211_s1g_cap *s1g_capab;
1551 const struct ieee80211_s1g_oper_ie *s1g_oper;
1552 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat;
1553 const struct ieee80211_aid_response_ie *aid_resp;
1554
1555 /* length of them, respectively */
1556 u8 ext_capab_len;
1557 u8 ssid_len;
1558 u8 supp_rates_len;
1559 u8 tim_len;
1560 u8 rsn_len;
1561 u8 rsnx_len;
1562 u8 ext_supp_rates_len;
1563 u8 wmm_info_len;
1564 u8 wmm_param_len;
1565 u8 he_cap_len;
1566 u8 mesh_id_len;
1567 u8 peering_len;
1568 u8 preq_len;
1569 u8 prep_len;
1570 u8 perr_len;
1571 u8 country_elem_len;
1572 u8 bssid_index_len;
1573
1574 void *nontx_profile;
1575
1576 /* whether a parse error occurred while retrieving these elements */
1577 bool parse_error;
1578 };
1579
hw_to_local(struct ieee80211_hw * hw)1580 static inline struct ieee80211_local *hw_to_local(
1581 struct ieee80211_hw *hw)
1582 {
1583 return container_of(hw, struct ieee80211_local, hw);
1584 }
1585
to_txq_info(struct ieee80211_txq * txq)1586 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1587 {
1588 return container_of(txq, struct txq_info, txq);
1589 }
1590
txq_has_queue(struct ieee80211_txq * txq)1591 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1592 {
1593 struct txq_info *txqi = to_txq_info(txq);
1594
1595 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1596 }
1597
ieee80211_bssid_match(const u8 * raddr,const u8 * addr)1598 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1599 {
1600 return ether_addr_equal(raddr, addr) ||
1601 is_broadcast_ether_addr(raddr);
1602 }
1603
1604 static inline bool
ieee80211_have_rx_timestamp(struct ieee80211_rx_status * status)1605 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1606 {
1607 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1608 status->flag & RX_FLAG_MACTIME_END);
1609 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END))
1610 return true;
1611 /* can't handle non-legacy preamble yet */
1612 if (status->flag & RX_FLAG_MACTIME_PLCP_START &&
1613 status->encoding == RX_ENC_LEGACY)
1614 return true;
1615 return false;
1616 }
1617
1618 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1619 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1620
1621 /* This function returns the number of multicast stations connected to this
1622 * interface. It returns -1 if that number is not tracked, that is for netdevs
1623 * not in AP or AP_VLAN mode or when using 4addr.
1624 */
1625 static inline int
ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data * sdata)1626 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1627 {
1628 if (sdata->vif.type == NL80211_IFTYPE_AP)
1629 return atomic_read(&sdata->u.ap.num_mcast_sta);
1630 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1631 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1632 return -1;
1633 }
1634
1635 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1636 struct ieee80211_rx_status *status,
1637 unsigned int mpdu_len,
1638 unsigned int mpdu_offset);
1639 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1640 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1641 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1642 u32 changed);
1643 void ieee80211_configure_filter(struct ieee80211_local *local);
1644 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1645
1646 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1647 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1648 u64 *cookie, gfp_t gfp);
1649
1650 void ieee80211_check_fast_rx(struct sta_info *sta);
1651 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1652 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1653 void ieee80211_clear_fast_rx(struct sta_info *sta);
1654
1655 /* STA code */
1656 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1657 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1658 struct cfg80211_auth_request *req);
1659 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1660 struct cfg80211_assoc_request *req);
1661 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1662 struct cfg80211_deauth_request *req);
1663 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1664 struct cfg80211_disassoc_request *req);
1665 void ieee80211_send_pspoll(struct ieee80211_local *local,
1666 struct ieee80211_sub_if_data *sdata);
1667 void ieee80211_recalc_ps(struct ieee80211_local *local);
1668 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1669 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1670 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1671 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1672 struct sk_buff *skb);
1673 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
1674 struct sk_buff *skb);
1675 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1676 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1677 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1678 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1679 __le16 fc, bool acked);
1680 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1681 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1682 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1683
1684 /* IBSS code */
1685 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1686 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1687 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1688 const u8 *bssid, const u8 *addr, u32 supp_rates);
1689 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1690 struct cfg80211_ibss_params *params);
1691 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1692 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1693 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1694 struct sk_buff *skb);
1695 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1696 struct cfg80211_csa_settings *csa_settings);
1697 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1698 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1699
1700 /* OCB code */
1701 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1702 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1703 const u8 *bssid, const u8 *addr, u32 supp_rates);
1704 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1705 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1706 struct ocb_setup *setup);
1707 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1708
1709 /* mesh code */
1710 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1711 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1712 struct sk_buff *skb);
1713 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1714 struct cfg80211_csa_settings *csa_settings);
1715 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1716
1717 /* scan/BSS handling */
1718 void ieee80211_scan_work(struct work_struct *work);
1719 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1720 const u8 *ssid, u8 ssid_len,
1721 struct ieee80211_channel **channels,
1722 unsigned int n_channels,
1723 enum nl80211_bss_scan_width scan_width);
1724 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1725 struct cfg80211_scan_request *req);
1726 void ieee80211_scan_cancel(struct ieee80211_local *local);
1727 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1728 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1729
1730 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1731 struct ieee80211_bss *
1732 ieee80211_bss_info_update(struct ieee80211_local *local,
1733 struct ieee80211_rx_status *rx_status,
1734 struct ieee80211_mgmt *mgmt,
1735 size_t len,
1736 struct ieee80211_channel *channel);
1737 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1738 struct ieee80211_bss *bss);
1739
1740 /* scheduled scan handling */
1741 int
1742 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1743 struct cfg80211_sched_scan_request *req);
1744 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1745 struct cfg80211_sched_scan_request *req);
1746 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1747 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1748 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1749
1750 /* off-channel/mgmt-tx */
1751 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1752 void ieee80211_offchannel_return(struct ieee80211_local *local);
1753 void ieee80211_roc_setup(struct ieee80211_local *local);
1754 void ieee80211_start_next_roc(struct ieee80211_local *local);
1755 void ieee80211_roc_purge(struct ieee80211_local *local,
1756 struct ieee80211_sub_if_data *sdata);
1757 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1758 struct ieee80211_channel *chan,
1759 unsigned int duration, u64 *cookie);
1760 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1761 struct wireless_dev *wdev, u64 cookie);
1762 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1763 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1764 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1765 struct wireless_dev *wdev, u64 cookie);
1766
1767 /* channel switch handling */
1768 void ieee80211_csa_finalize_work(struct work_struct *work);
1769 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1770 struct cfg80211_csa_settings *params);
1771
1772 /* interface handling */
1773 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
1774 NETIF_F_HW_CSUM | NETIF_F_SG | \
1775 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE)
1776 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM)
1777 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \
1778 MAC80211_SUPPORTED_FEATURES_RX)
1779
1780 int ieee80211_iface_init(void);
1781 void ieee80211_iface_exit(void);
1782 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1783 unsigned char name_assign_type,
1784 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1785 struct vif_params *params);
1786 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1787 enum nl80211_iftype type);
1788 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1789 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1790 u32 ieee80211_idle_off(struct ieee80211_local *local);
1791 void ieee80211_recalc_idle(struct ieee80211_local *local);
1792 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1793 const int offset);
1794 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1795 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1796 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1797 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1798
1799 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1800 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1801 bool update_bss);
1802 void ieee80211_recalc_offload(struct ieee80211_local *local);
1803
ieee80211_sdata_running(struct ieee80211_sub_if_data * sdata)1804 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1805 {
1806 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1807 }
1808
1809 /* tx handling */
1810 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1811 void ieee80211_tx_pending(unsigned long data);
1812 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1813 struct net_device *dev);
1814 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1815 struct net_device *dev);
1816 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb,
1817 struct net_device *dev);
1818 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1819 struct net_device *dev,
1820 u32 info_flags,
1821 u32 ctrl_flags,
1822 u64 *cookie);
1823 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1824 struct sk_buff_head *skbs);
1825 struct sk_buff *
1826 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1827 struct sk_buff *skb, u32 info_flags);
1828 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1829 struct ieee80211_supported_band *sband,
1830 int retry_count, int shift, bool send_to_cooked,
1831 struct ieee80211_tx_status *status);
1832
1833 void ieee80211_check_fast_xmit(struct sta_info *sta);
1834 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1835 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1836 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1837 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
1838 const u8 *buf, size_t len,
1839 const u8 *dest, __be16 proto, bool unencrypted,
1840 u64 *cookie);
1841 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
1842 const u8 *buf, size_t len);
1843
1844 /* HT */
1845 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1846 struct ieee80211_sta_ht_cap *ht_cap);
1847 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1848 struct ieee80211_supported_band *sband,
1849 const struct ieee80211_ht_cap *ht_cap_ie,
1850 struct sta_info *sta);
1851 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1852 const u8 *da, u16 tid,
1853 u16 initiator, u16 reason_code);
1854 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1855 enum ieee80211_smps_mode smps, const u8 *da,
1856 const u8 *bssid);
1857 void ieee80211_request_smps_ap_work(struct work_struct *work);
1858 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1859 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1860 enum ieee80211_smps_mode smps_mode_new);
1861
1862 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1863 u16 initiator, u16 reason, bool stop);
1864 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1865 u16 initiator, u16 reason, bool stop);
1866 void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
1867 u8 dialog_token, u16 timeout,
1868 u16 start_seq_num, u16 ba_policy, u16 tid,
1869 u16 buf_size, bool tx, bool auto_seq,
1870 const struct ieee80211_addba_ext_ie *addbaext);
1871 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1872 enum ieee80211_agg_stop_reason reason);
1873 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1874 struct sta_info *sta,
1875 struct ieee80211_mgmt *mgmt, size_t len);
1876 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1877 struct sta_info *sta,
1878 struct ieee80211_mgmt *mgmt,
1879 size_t len);
1880 void ieee80211_process_addba_request(struct ieee80211_local *local,
1881 struct sta_info *sta,
1882 struct ieee80211_mgmt *mgmt,
1883 size_t len);
1884
1885 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1886 enum ieee80211_agg_stop_reason reason);
1887 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1888 enum ieee80211_agg_stop_reason reason);
1889 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
1890 struct tid_ampdu_tx *tid_tx);
1891 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
1892 struct tid_ampdu_tx *tid_tx);
1893 void ieee80211_ba_session_work(struct work_struct *work);
1894 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1895 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1896
1897 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1898 enum nl80211_smps_mode
1899 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
1900
1901 /* VHT */
1902 void
1903 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1904 struct ieee80211_supported_band *sband,
1905 const struct ieee80211_vht_cap *vht_cap_ie,
1906 struct sta_info *sta);
1907 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1908 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1909 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1910 enum ieee80211_sta_rx_bandwidth
1911 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
1912 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
1913 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1914 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
1915 struct ieee80211_mgmt *mgmt);
1916 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1917 struct sta_info *sta, u8 opmode,
1918 enum nl80211_band band);
1919 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1920 struct sta_info *sta, u8 opmode,
1921 enum nl80211_band band);
1922 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1923 struct ieee80211_sta_vht_cap *vht_cap);
1924 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
1925 u16 vht_mask[NL80211_VHT_NSS_MAX]);
1926 enum nl80211_chan_width
1927 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta);
1928
1929 /* HE */
1930 void
1931 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
1932 struct ieee80211_supported_band *sband,
1933 const u8 *he_cap_ie, u8 he_cap_len,
1934 const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
1935 struct sta_info *sta);
1936 void
1937 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
1938 const struct ieee80211_he_spr *he_spr_ie_elem);
1939
1940 void
1941 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
1942 const struct ieee80211_he_operation *he_op_ie_elem);
1943
1944 /* S1G */
1945 void ieee80211_s1g_sta_rate_init(struct sta_info *sta);
1946
1947 /* Spectrum management */
1948 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1949 struct ieee80211_mgmt *mgmt,
1950 size_t len);
1951 /**
1952 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1953 * @sdata: the sdata of the interface which has received the frame
1954 * @elems: parsed 802.11 elements received with the frame
1955 * @current_band: indicates the current band
1956 * @vht_cap_info: VHT capabilities of the transmitter
1957 * @sta_flags: contains information about own capabilities and restrictions
1958 * to decide which channel switch announcements can be accepted. Only the
1959 * following subset of &enum ieee80211_sta_flags are evaluated:
1960 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1961 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1962 * %IEEE80211_STA_DISABLE_160MHZ.
1963 * @bssid: the currently connected bssid (for reporting)
1964 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1965 All of them will be filled with if success only.
1966 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1967 */
1968 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1969 struct ieee802_11_elems *elems,
1970 enum nl80211_band current_band,
1971 u32 vht_cap_info,
1972 u32 sta_flags, u8 *bssid,
1973 struct ieee80211_csa_ie *csa_ie);
1974
1975 /* Suspend/resume and hw reconfiguration */
1976 int ieee80211_reconfig(struct ieee80211_local *local);
1977 void ieee80211_stop_device(struct ieee80211_local *local);
1978
1979 int __ieee80211_suspend(struct ieee80211_hw *hw,
1980 struct cfg80211_wowlan *wowlan);
1981
__ieee80211_resume(struct ieee80211_hw * hw)1982 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1983 {
1984 struct ieee80211_local *local = hw_to_local(hw);
1985
1986 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
1987 !test_bit(SCAN_COMPLETED, &local->scanning),
1988 "%s: resume with hardware scan still in progress\n",
1989 wiphy_name(hw->wiphy));
1990
1991 return ieee80211_reconfig(hw_to_local(hw));
1992 }
1993
1994 /* utility functions/constants */
1995 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1996 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
1997 int rate, int erp, int short_preamble,
1998 int shift);
1999 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
2000 struct ieee80211_tx_queue_params *qparam,
2001 int ac);
2002 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
2003 bool bss_notify, bool enable_qos);
2004 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
2005 struct sta_info *sta, struct sk_buff *skb);
2006
2007 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2008 struct sk_buff *skb, int tid,
2009 enum nl80211_band band);
2010
2011 /* sta_out needs to be checked for ERR_PTR() before using */
2012 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata,
2013 struct sk_buff *skb,
2014 struct sta_info **sta_out);
2015
2016 static inline void
ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid,enum nl80211_band band)2017 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2018 struct sk_buff *skb, int tid,
2019 enum nl80211_band band)
2020 {
2021 rcu_read_lock();
2022 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
2023 rcu_read_unlock();
2024 }
2025
ieee80211_tx_skb_tid(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid)2026 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
2027 struct sk_buff *skb, int tid)
2028 {
2029 struct ieee80211_chanctx_conf *chanctx_conf;
2030
2031 rcu_read_lock();
2032 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2033 if (WARN_ON(!chanctx_conf)) {
2034 rcu_read_unlock();
2035 kfree_skb(skb);
2036 return;
2037 }
2038
2039 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
2040 chanctx_conf->def.chan->band);
2041 rcu_read_unlock();
2042 }
2043
ieee80211_tx_skb(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb)2044 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
2045 struct sk_buff *skb)
2046 {
2047 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
2048 ieee80211_tx_skb_tid(sdata, skb, 7);
2049 }
2050
2051 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
2052 struct ieee802_11_elems *elems,
2053 u64 filter, u32 crc, u8 *transmitter_bssid,
2054 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)2055 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
2056 bool action,
2057 struct ieee802_11_elems *elems,
2058 u8 *transmitter_bssid,
2059 u8 *bss_bssid)
2060 {
2061 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0,
2062 transmitter_bssid, bss_bssid);
2063 }
2064
2065
2066 extern const int ieee802_1d_to_ac[8];
2067
ieee80211_ac_from_tid(int tid)2068 static inline int ieee80211_ac_from_tid(int tid)
2069 {
2070 return ieee802_1d_to_ac[tid & 7];
2071 }
2072
2073 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
2074 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
2075 void ieee80211_dynamic_ps_timer(struct timer_list *t);
2076 void ieee80211_send_nullfunc(struct ieee80211_local *local,
2077 struct ieee80211_sub_if_data *sdata,
2078 bool powersave);
2079 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
2080 struct ieee80211_sub_if_data *sdata);
2081 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2082 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
2083
2084 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
2085 unsigned long queues,
2086 enum queue_stop_reason reason,
2087 bool refcounted);
2088 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
2089 struct ieee80211_sub_if_data *sdata,
2090 enum queue_stop_reason reason);
2091 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
2092 struct ieee80211_sub_if_data *sdata,
2093 enum queue_stop_reason reason);
2094 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
2095 unsigned long queues,
2096 enum queue_stop_reason reason,
2097 bool refcounted);
2098 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
2099 enum queue_stop_reason reason,
2100 bool refcounted);
2101 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
2102 enum queue_stop_reason reason,
2103 bool refcounted);
2104 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
2105 void ieee80211_add_pending_skb(struct ieee80211_local *local,
2106 struct sk_buff *skb);
2107 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
2108 struct sk_buff_head *skbs);
2109 void ieee80211_flush_queues(struct ieee80211_local *local,
2110 struct ieee80211_sub_if_data *sdata, bool drop);
2111 void __ieee80211_flush_queues(struct ieee80211_local *local,
2112 struct ieee80211_sub_if_data *sdata,
2113 unsigned int queues, bool drop);
2114
ieee80211_can_run_worker(struct ieee80211_local * local)2115 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2116 {
2117 /*
2118 * It's unsafe to try to do any work during reconfigure flow.
2119 * When the flow ends the work will be requeued.
2120 */
2121 if (local->in_reconfig)
2122 return false;
2123
2124 /*
2125 * If quiescing is set, we are racing with __ieee80211_suspend.
2126 * __ieee80211_suspend flushes the workers after setting quiescing,
2127 * and we check quiescing / suspended before enqueing new workers.
2128 * We should abort the worker to avoid the races below.
2129 */
2130 if (local->quiescing)
2131 return false;
2132
2133 /*
2134 * We might already be suspended if the following scenario occurs:
2135 * __ieee80211_suspend Control path
2136 *
2137 * if (local->quiescing)
2138 * return;
2139 * local->quiescing = true;
2140 * flush_workqueue();
2141 * queue_work(...);
2142 * local->suspended = true;
2143 * local->quiescing = false;
2144 * worker starts running...
2145 */
2146 if (local->suspended)
2147 return false;
2148
2149 return true;
2150 }
2151
2152 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2153 void ieee80211_txq_set_params(struct ieee80211_local *local);
2154 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2155 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2156 struct sta_info *sta,
2157 struct txq_info *txq, int tid);
2158 void ieee80211_txq_purge(struct ieee80211_local *local,
2159 struct txq_info *txqi);
2160 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2161 struct ieee80211_sub_if_data *sdata);
2162 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2163 struct txq_info *txqi);
2164 void ieee80211_wake_txqs(unsigned long data);
2165 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2166 u16 transaction, u16 auth_alg, u16 status,
2167 const u8 *extra, size_t extra_len, const u8 *bssid,
2168 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2169 u32 tx_flags);
2170 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2171 const u8 *da, const u8 *bssid,
2172 u16 stype, u16 reason,
2173 bool send_frame, u8 *frame_buf);
2174
2175 enum {
2176 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
2177 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
2178 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
2179 };
2180
2181 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2182 size_t buffer_len,
2183 struct ieee80211_scan_ies *ie_desc,
2184 const u8 *ie, size_t ie_len,
2185 u8 bands_used, u32 *rate_masks,
2186 struct cfg80211_chan_def *chandef,
2187 u32 flags);
2188 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2189 const u8 *src, const u8 *dst,
2190 u32 ratemask,
2191 struct ieee80211_channel *chan,
2192 const u8 *ssid, size_t ssid_len,
2193 const u8 *ie, size_t ie_len,
2194 u32 flags);
2195 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2196 struct ieee802_11_elems *elems,
2197 enum nl80211_band band, u32 *basic_rates);
2198 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2199 enum ieee80211_smps_mode smps_mode);
2200 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
2201 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
2202
2203 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2204 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2205 u16 cap);
2206 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2207 const struct cfg80211_chan_def *chandef,
2208 u16 prot_mode, bool rifs_mode);
2209 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2210 const struct cfg80211_chan_def *chandef);
2211 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2212 u32 cap);
2213 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2214 const struct cfg80211_chan_def *chandef);
2215 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2216 u8 *ieee80211_ie_build_he_cap(u8 *pos,
2217 const struct ieee80211_sta_he_cap *he_cap,
2218 u8 *end);
2219 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2220 struct sk_buff *skb);
2221 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef);
2222 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2223 const struct ieee80211_supported_band *sband,
2224 const u8 *srates, int srates_len, u32 *rates);
2225 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2226 struct sk_buff *skb, bool need_basic,
2227 enum nl80211_band band);
2228 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2229 struct sk_buff *skb, bool need_basic,
2230 enum nl80211_band band);
2231 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2232 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
2233 struct ieee80211_sta_s1g_cap *caps,
2234 struct sk_buff *skb);
2235 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
2236 struct sk_buff *skb);
2237
2238 /* channel management */
2239 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2240 struct cfg80211_chan_def *chandef);
2241 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
2242 const struct ieee80211_vht_operation *oper,
2243 const struct ieee80211_ht_operation *htop,
2244 struct cfg80211_chan_def *chandef);
2245 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
2246 const struct ieee80211_he_operation *he_oper,
2247 struct cfg80211_chan_def *chandef);
2248 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
2249 struct cfg80211_chan_def *chandef);
2250 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2251
2252 int __must_check
2253 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
2254 const struct cfg80211_chan_def *chandef,
2255 enum ieee80211_chanctx_mode mode);
2256 int __must_check
2257 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
2258 const struct cfg80211_chan_def *chandef,
2259 enum ieee80211_chanctx_mode mode,
2260 bool radar_required);
2261 int __must_check
2262 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2263 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2264
2265 int __must_check
2266 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2267 const struct cfg80211_chan_def *chandef,
2268 u32 *changed);
2269 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2270 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2271 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2272 bool clear);
2273 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2274 struct ieee80211_chanctx *ctx);
2275
2276 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2277 struct ieee80211_chanctx *chanctx);
2278 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2279 struct ieee80211_chanctx *ctx);
2280 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2281
2282 void ieee80211_dfs_cac_timer(unsigned long data);
2283 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2284 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2285 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2286 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2287 struct cfg80211_csa_settings *csa_settings);
2288
2289 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2290 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2291 const struct ieee80211_cipher_scheme *
2292 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2293 enum nl80211_iftype iftype);
2294 int ieee80211_cs_headroom(struct ieee80211_local *local,
2295 struct cfg80211_crypto_settings *crypto,
2296 enum nl80211_iftype iftype);
2297 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2298 struct ieee80211_sub_if_data *sdata);
2299 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2300 const struct cfg80211_chan_def *chandef,
2301 enum ieee80211_chanctx_mode chanmode,
2302 u8 radar_detect);
2303 int ieee80211_max_num_channels(struct ieee80211_local *local);
2304 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta);
2305 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2306 struct ieee80211_chanctx *ctx);
2307
2308 /* TDLS */
2309 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2310 const u8 *peer, u8 action_code, u8 dialog_token,
2311 u16 status_code, u32 peer_capability,
2312 bool initiator, const u8 *extra_ies,
2313 size_t extra_ies_len);
2314 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2315 const u8 *peer, enum nl80211_tdls_operation oper);
2316 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2317 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2318 const u8 *addr, u8 oper_class,
2319 struct cfg80211_chan_def *chandef);
2320 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2321 struct net_device *dev,
2322 const u8 *addr);
2323 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2324 void ieee80211_tdls_chsw_work(struct work_struct *wk);
2325 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2326 const u8 *peer, u16 reason);
2327 const char *ieee80211_get_reason_code_string(u16 reason_code);
2328 u16 ieee80211_encode_usf(int val);
2329 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
2330 enum nl80211_iftype type);
2331
2332 extern const struct ethtool_ops ieee80211_ethtool_ops;
2333
2334 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw,
2335 struct ieee80211_vif *vif,
2336 struct ieee80211_sta *pubsta,
2337 int len, bool ampdu);
2338 #ifdef CONFIG_MAC80211_NOINLINE
2339 #define debug_noinline noinline
2340 #else
2341 #define debug_noinline
2342 #endif
2343
2344 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache);
2345 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache);
2346
2347 #endif /* IEEE80211_I_H */
2348