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) 2018-2022 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 <linux/rbtree.h>
29 #include <net/ieee80211_radiotap.h>
30 #include <net/cfg80211.h>
31 #include <net/mac80211.h>
32 #include <net/fq.h>
33 #include "key.h"
34 #include "sta_info.h"
35 #include "debug.h"
36
37 extern const struct cfg80211_ops mac80211_config_ops;
38
39 struct ieee80211_local;
40
41 /* Maximum number of broadcast/multicast frames to buffer when some of the
42 * associated stations are using power saving. */
43 #define AP_MAX_BC_BUFFER 128
44
45 /* Maximum number of frames buffered to all STAs, including multicast frames.
46 * Note: increasing this limit increases the potential memory requirement. Each
47 * frame can be up to about 2 kB long. */
48 #define TOTAL_MAX_TX_BUFFER 512
49
50 /* Required encryption head and tailroom */
51 #define IEEE80211_ENCRYPT_HEADROOM 8
52 #define IEEE80211_ENCRYPT_TAILROOM 18
53
54 /* power level hasn't been configured (or set to automatic) */
55 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
56
57 /*
58 * Some APs experience problems when working with U-APSD. Decreasing the
59 * probability of that happening by using legacy mode for all ACs but VO isn't
60 * enough.
61 *
62 * Cisco 4410N originally forced us to enable VO by default only because it
63 * treated non-VO ACs as legacy.
64 *
65 * However some APs (notably Netgear R7000) silently reclassify packets to
66 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
67 * clients would never see some frames (e.g. ARP responses) or would fetch them
68 * accidentally after a long time.
69 *
70 * It makes little sense to enable u-APSD queues by default because it needs
71 * userspace applications to be aware of it to actually take advantage of the
72 * possible additional powersavings. Implicitly depending on driver autotrigger
73 * frame support doesn't make much sense.
74 */
75 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
76
77 #define IEEE80211_DEFAULT_MAX_SP_LEN \
78 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
79
80 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS];
81
82 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
83
84 #define IEEE80211_MAX_NAN_INSTANCE_ID 255
85
86
87 /*
88 * Keep a station's queues on the active list for deficit accounting purposes
89 * if it was active or queued during the last 100ms
90 */
91 #define AIRTIME_ACTIVE_DURATION (HZ / 10)
92
93 struct ieee80211_bss {
94 u32 device_ts_beacon, device_ts_presp;
95
96 bool wmm_used;
97 bool uapsd_supported;
98
99 #define IEEE80211_MAX_SUPP_RATES 32
100 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
101 size_t supp_rates_len;
102 struct ieee80211_rate *beacon_rate;
103
104 u32 vht_cap_info;
105
106 /*
107 * During association, we save an ERP value from a probe response so
108 * that we can feed ERP info to the driver when handling the
109 * association completes. these fields probably won't be up-to-date
110 * otherwise, you probably don't want to use them.
111 */
112 bool has_erp_value;
113 u8 erp_value;
114
115 /* Keep track of the corruption of the last beacon/probe response. */
116 u8 corrupt_data;
117
118 /* Keep track of what bits of information we have valid info for. */
119 u8 valid_data;
120 };
121
122 /**
123 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
124 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
125 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
126 *
127 * These are bss flags that are attached to a bss in the
128 * @corrupt_data field of &struct ieee80211_bss.
129 */
130 enum ieee80211_bss_corrupt_data_flags {
131 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
132 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
133 };
134
135 /**
136 * enum ieee80211_valid_data_flags - BSS valid data flags
137 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
138 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
139 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
140 *
141 * These are bss flags that are attached to a bss in the
142 * @valid_data field of &struct ieee80211_bss. They show which parts
143 * of the data structure were received as a result of an un-corrupted
144 * beacon/probe response.
145 */
146 enum ieee80211_bss_valid_data_flags {
147 IEEE80211_BSS_VALID_WMM = BIT(1),
148 IEEE80211_BSS_VALID_RATES = BIT(2),
149 IEEE80211_BSS_VALID_ERP = BIT(3)
150 };
151
152 typedef unsigned __bitwise ieee80211_tx_result;
153 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
154 #define TX_DROP ((__force ieee80211_tx_result) 1u)
155 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
156
157 #define IEEE80211_TX_UNICAST BIT(1)
158 #define IEEE80211_TX_PS_BUFFERED BIT(2)
159
160 struct ieee80211_tx_data {
161 struct sk_buff *skb;
162 struct sk_buff_head skbs;
163 struct ieee80211_local *local;
164 struct ieee80211_sub_if_data *sdata;
165 struct sta_info *sta;
166 struct ieee80211_key *key;
167 struct ieee80211_tx_rate rate;
168
169 unsigned int flags;
170 };
171
172
173 typedef unsigned __bitwise ieee80211_rx_result;
174 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
175 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
176 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
177 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
178
179 /**
180 * enum ieee80211_packet_rx_flags - packet RX flags
181 * @IEEE80211_RX_AMSDU: a-MSDU packet
182 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
183 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
184 *
185 * These are per-frame flags that are attached to a frame in the
186 * @rx_flags field of &struct ieee80211_rx_status.
187 */
188 enum ieee80211_packet_rx_flags {
189 IEEE80211_RX_AMSDU = BIT(3),
190 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
191 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
192 };
193
194 /**
195 * enum ieee80211_rx_flags - RX data flags
196 *
197 * @IEEE80211_RX_CMNTR: received on cooked monitor already
198 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
199 * to cfg80211_report_obss_beacon().
200 *
201 * These flags are used across handling multiple interfaces
202 * for a single frame.
203 */
204 enum ieee80211_rx_flags {
205 IEEE80211_RX_CMNTR = BIT(0),
206 IEEE80211_RX_BEACON_REPORTED = BIT(1),
207 };
208
209 struct ieee80211_rx_data {
210 struct list_head *list;
211 struct sk_buff *skb;
212 struct ieee80211_local *local;
213 struct ieee80211_sub_if_data *sdata;
214 struct ieee80211_link_data *link;
215 struct sta_info *sta;
216 struct link_sta_info *link_sta;
217 struct ieee80211_key *key;
218
219 unsigned int flags;
220
221 /*
222 * Index into sequence numbers array, 0..16
223 * since the last (16) is used for non-QoS,
224 * will be 16 on non-QoS frames.
225 */
226 int seqno_idx;
227
228 /*
229 * Index into the security IV/PN arrays, 0..16
230 * since the last (16) is used for CCMP-encrypted
231 * management frames, will be set to 16 on mgmt
232 * frames and 0 on non-QoS frames.
233 */
234 int security_idx;
235
236 int link_id;
237
238 union {
239 struct {
240 u32 iv32;
241 u16 iv16;
242 } tkip;
243 struct {
244 u8 pn[IEEE80211_CCMP_PN_LEN];
245 } ccm_gcm;
246 };
247 };
248
249 struct ieee80211_csa_settings {
250 const u16 *counter_offsets_beacon;
251 const u16 *counter_offsets_presp;
252
253 int n_counter_offsets_beacon;
254 int n_counter_offsets_presp;
255
256 u8 count;
257 };
258
259 struct ieee80211_color_change_settings {
260 u16 counter_offset_beacon;
261 u16 counter_offset_presp;
262 u8 count;
263 };
264
265 struct beacon_data {
266 u8 *head, *tail;
267 int head_len, tail_len;
268 struct ieee80211_meshconf_ie *meshconf;
269 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
270 u8 cntdwn_current_counter;
271 struct cfg80211_mbssid_elems *mbssid_ies;
272 struct rcu_head rcu_head;
273 };
274
275 struct probe_resp {
276 struct rcu_head rcu_head;
277 int len;
278 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
279 u8 data[];
280 };
281
282 struct fils_discovery_data {
283 struct rcu_head rcu_head;
284 int len;
285 u8 data[];
286 };
287
288 struct unsol_bcast_probe_resp_data {
289 struct rcu_head rcu_head;
290 int len;
291 u8 data[];
292 };
293
294 struct ps_data {
295 /* yes, this looks ugly, but guarantees that we can later use
296 * bitmap_empty :)
297 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
298 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
299 __aligned(__alignof__(unsigned long));
300 struct sk_buff_head bc_buf;
301 atomic_t num_sta_ps; /* number of stations in PS mode */
302 int dtim_count;
303 bool dtim_bc_mc;
304 };
305
306 struct ieee80211_if_ap {
307 struct list_head vlans; /* write-protected with RTNL and local->mtx */
308
309 struct ps_data ps;
310 atomic_t num_mcast_sta; /* number of stations receiving multicast */
311
312 bool multicast_to_unicast;
313 bool active;
314 };
315
316 struct ieee80211_if_vlan {
317 struct list_head list; /* write-protected with RTNL and local->mtx */
318
319 /* used for all tx if the VLAN is configured to 4-addr mode */
320 struct sta_info __rcu *sta;
321 atomic_t num_mcast_sta; /* number of stations receiving multicast */
322 };
323
324 struct mesh_stats {
325 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
326 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
327 __u32 fwded_frames; /* Mesh total forwarded frames */
328 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
329 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
330 };
331
332 #define PREQ_Q_F_START 0x1
333 #define PREQ_Q_F_REFRESH 0x2
334 struct mesh_preq_queue {
335 struct list_head list;
336 u8 dst[ETH_ALEN];
337 u8 flags;
338 };
339
340 struct ieee80211_roc_work {
341 struct list_head list;
342
343 struct ieee80211_sub_if_data *sdata;
344
345 struct ieee80211_channel *chan;
346
347 bool started, abort, hw_begun, notified;
348 bool on_channel;
349
350 unsigned long start_time;
351
352 u32 duration, req_duration;
353 struct sk_buff *frame;
354 u64 cookie, mgmt_tx_cookie;
355 enum ieee80211_roc_type type;
356 };
357
358 /* flags used in struct ieee80211_if_managed.flags */
359 enum ieee80211_sta_flags {
360 IEEE80211_STA_CONNECTION_POLL = BIT(1),
361 IEEE80211_STA_CONTROL_PORT = BIT(2),
362 IEEE80211_STA_MFP_ENABLED = BIT(6),
363 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
364 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
365 IEEE80211_STA_ENABLE_RRM = BIT(15),
366 };
367
368 typedef u32 __bitwise ieee80211_conn_flags_t;
369
370 enum ieee80211_conn_flags {
371 IEEE80211_CONN_DISABLE_HT = (__force ieee80211_conn_flags_t)BIT(0),
372 IEEE80211_CONN_DISABLE_40MHZ = (__force ieee80211_conn_flags_t)BIT(1),
373 IEEE80211_CONN_DISABLE_VHT = (__force ieee80211_conn_flags_t)BIT(2),
374 IEEE80211_CONN_DISABLE_80P80MHZ = (__force ieee80211_conn_flags_t)BIT(3),
375 IEEE80211_CONN_DISABLE_160MHZ = (__force ieee80211_conn_flags_t)BIT(4),
376 IEEE80211_CONN_DISABLE_HE = (__force ieee80211_conn_flags_t)BIT(5),
377 IEEE80211_CONN_DISABLE_EHT = (__force ieee80211_conn_flags_t)BIT(6),
378 IEEE80211_CONN_DISABLE_320MHZ = (__force ieee80211_conn_flags_t)BIT(7),
379 };
380
381 struct ieee80211_mgd_auth_data {
382 struct cfg80211_bss *bss;
383 unsigned long timeout;
384 int tries;
385 u16 algorithm, expected_transaction;
386
387 u8 key[WLAN_KEY_LEN_WEP104];
388 u8 key_len, key_idx;
389 bool done, waiting;
390 bool peer_confirmed;
391 bool timeout_started;
392 int link_id;
393
394 u8 ap_addr[ETH_ALEN] __aligned(2);
395
396 u16 sae_trans, sae_status;
397 size_t data_len;
398 u8 data[];
399 };
400
401 struct ieee80211_mgd_assoc_data {
402 struct {
403 struct cfg80211_bss *bss;
404
405 u8 addr[ETH_ALEN] __aligned(2);
406
407 u8 ap_ht_param;
408
409 struct ieee80211_vht_cap ap_vht_cap;
410
411 size_t elems_len;
412 u8 *elems; /* pointing to inside ie[] below */
413
414 ieee80211_conn_flags_t conn_flags;
415
416 u16 status;
417 } link[IEEE80211_MLD_MAX_NUM_LINKS];
418
419 u8 ap_addr[ETH_ALEN] __aligned(2);
420
421 /* this is for a workaround, so we use it only for non-MLO */
422 const u8 *supp_rates;
423 u8 supp_rates_len;
424
425 unsigned long timeout;
426 int tries;
427
428 u8 prev_ap_addr[ETH_ALEN];
429 u8 ssid[IEEE80211_MAX_SSID_LEN];
430 u8 ssid_len;
431 bool wmm, uapsd;
432 bool need_beacon;
433 bool synced;
434 bool timeout_started;
435 bool s1g;
436
437 unsigned int assoc_link_id;
438
439 u8 fils_nonces[2 * FILS_NONCE_LEN];
440 u8 fils_kek[FILS_MAX_KEK_LEN];
441 size_t fils_kek_len;
442
443 size_t ie_len;
444 u8 *ie_pos; /* used to fill ie[] with link[].elems */
445 u8 ie[];
446 };
447
448 struct ieee80211_sta_tx_tspec {
449 /* timestamp of the first packet in the time slice */
450 unsigned long time_slice_start;
451
452 u32 admitted_time; /* in usecs, unlike over the air */
453 u8 tsid;
454 s8 up; /* signed to be able to invalidate with -1 during teardown */
455
456 /* consumed TX time in microseconds in the time slice */
457 u32 consumed_tx_time;
458 enum {
459 TX_TSPEC_ACTION_NONE = 0,
460 TX_TSPEC_ACTION_DOWNGRADE,
461 TX_TSPEC_ACTION_STOP_DOWNGRADE,
462 } action;
463 bool downgraded;
464 };
465
466 DECLARE_EWMA(beacon_signal, 4, 4)
467
468 struct ieee80211_if_managed {
469 struct timer_list timer;
470 struct timer_list conn_mon_timer;
471 struct timer_list bcn_mon_timer;
472 struct work_struct monitor_work;
473 struct work_struct beacon_connection_loss_work;
474 struct work_struct csa_connection_drop_work;
475
476 unsigned long beacon_timeout;
477 unsigned long probe_timeout;
478 int probe_send_count;
479 bool nullfunc_failed;
480 u8 connection_loss:1,
481 driver_disconnect:1,
482 reconnect:1,
483 associated:1;
484
485 struct ieee80211_mgd_auth_data *auth_data;
486 struct ieee80211_mgd_assoc_data *assoc_data;
487
488 bool powersave; /* powersave requested for this iface */
489 bool broken_ap; /* AP is broken -- turn off powersave */
490
491 unsigned int flags;
492
493 bool status_acked;
494 bool status_received;
495 __le16 status_fc;
496
497 enum {
498 IEEE80211_MFP_DISABLED,
499 IEEE80211_MFP_OPTIONAL,
500 IEEE80211_MFP_REQUIRED
501 } mfp; /* management frame protection */
502
503 /*
504 * Bitmask of enabled u-apsd queues,
505 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
506 * to take effect.
507 */
508 unsigned int uapsd_queues;
509
510 /*
511 * Maximum number of buffered frames AP can deliver during a
512 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
513 * Needs a new association to take effect.
514 */
515 unsigned int uapsd_max_sp_len;
516
517 u8 use_4addr;
518
519 /*
520 * State variables for keeping track of RSSI of the AP currently
521 * connected to and informing driver when RSSI has gone
522 * below/above a certain threshold.
523 */
524 int rssi_min_thold, rssi_max_thold;
525
526 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
527 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
528 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
529 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
530 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */
531 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */
532
533 /* TDLS support */
534 u8 tdls_peer[ETH_ALEN] __aligned(2);
535 struct delayed_work tdls_peer_del_work;
536 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
537 struct sk_buff *teardown_skb; /* A copy to send through the AP */
538 spinlock_t teardown_lock; /* To lock changing teardown_skb */
539 bool tdls_wider_bw_prohibited;
540
541 /* WMM-AC TSPEC support */
542 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
543 /* Use a separate work struct so that we can do something here
544 * while the sdata->work is flushing the queues, for example.
545 * otherwise, in scenarios where we hardly get any traffic out
546 * on the BE queue, but there's a lot of VO traffic, we might
547 * get stuck in a downgraded situation and flush takes forever.
548 */
549 struct delayed_work tx_tspec_wk;
550
551 /* Information elements from the last transmitted (Re)Association
552 * Request frame.
553 */
554 u8 *assoc_req_ies;
555 size_t assoc_req_ies_len;
556 };
557
558 struct ieee80211_if_ibss {
559 struct timer_list timer;
560 struct work_struct csa_connection_drop_work;
561
562 unsigned long last_scan_completed;
563
564 u32 basic_rates;
565
566 bool fixed_bssid;
567 bool fixed_channel;
568 bool privacy;
569
570 bool control_port;
571 bool userspace_handles_dfs;
572
573 u8 bssid[ETH_ALEN] __aligned(2);
574 u8 ssid[IEEE80211_MAX_SSID_LEN];
575 u8 ssid_len, ie_len;
576 u8 *ie;
577 struct cfg80211_chan_def chandef;
578
579 unsigned long ibss_join_req;
580 /* probe response/beacon for IBSS */
581 struct beacon_data __rcu *presp;
582
583 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
584 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
585
586 spinlock_t incomplete_lock;
587 struct list_head incomplete_stations;
588
589 enum {
590 IEEE80211_IBSS_MLME_SEARCH,
591 IEEE80211_IBSS_MLME_JOINED,
592 } state;
593 };
594
595 /**
596 * struct ieee80211_if_ocb - OCB mode state
597 *
598 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
599 * @wrkq_flags: OCB deferred task action
600 * @incomplete_lock: delayed STA insertion lock
601 * @incomplete_stations: list of STAs waiting for delayed insertion
602 * @joined: indication if the interface is connected to an OCB network
603 */
604 struct ieee80211_if_ocb {
605 struct timer_list housekeeping_timer;
606 unsigned long wrkq_flags;
607
608 spinlock_t incomplete_lock;
609 struct list_head incomplete_stations;
610
611 bool joined;
612 };
613
614 /**
615 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
616 *
617 * these declarations define the interface, which enables
618 * vendor-specific mesh synchronization
619 *
620 */
621 struct ieee802_11_elems;
622 struct ieee80211_mesh_sync_ops {
623 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, u16 stype,
624 struct ieee80211_mgmt *mgmt, unsigned int len,
625 const struct ieee80211_meshconf_ie *mesh_cfg,
626 struct ieee80211_rx_status *rx_status);
627
628 /* should be called with beacon_data under RCU read lock */
629 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
630 struct beacon_data *beacon);
631 /* add other framework functions here */
632 };
633
634 struct mesh_csa_settings {
635 struct rcu_head rcu_head;
636 struct cfg80211_csa_settings settings;
637 };
638
639 /**
640 * struct mesh_table
641 *
642 * @known_gates: list of known mesh gates and their mpaths by the station. The
643 * gate's mpath may or may not be resolved and active.
644 * @gates_lock: protects updates to known_gates
645 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr
646 * @walk_head: linked list containing all mesh_path objects
647 * @walk_lock: lock protecting walk_head
648 * @entries: number of entries in the table
649 */
650 struct mesh_table {
651 struct hlist_head known_gates;
652 spinlock_t gates_lock;
653 struct rhashtable rhead;
654 struct hlist_head walk_head;
655 spinlock_t walk_lock;
656 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */
657 };
658
659 struct ieee80211_if_mesh {
660 struct timer_list housekeeping_timer;
661 struct timer_list mesh_path_timer;
662 struct timer_list mesh_path_root_timer;
663
664 unsigned long wrkq_flags;
665 unsigned long mbss_changed;
666
667 bool userspace_handles_dfs;
668
669 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
670 size_t mesh_id_len;
671 /* Active Path Selection Protocol Identifier */
672 u8 mesh_pp_id;
673 /* Active Path Selection Metric Identifier */
674 u8 mesh_pm_id;
675 /* Congestion Control Mode Identifier */
676 u8 mesh_cc_id;
677 /* Synchronization Protocol Identifier */
678 u8 mesh_sp_id;
679 /* Authentication Protocol Identifier */
680 u8 mesh_auth_id;
681 /* Local mesh Sequence Number */
682 u32 sn;
683 /* Last used PREQ ID */
684 u32 preq_id;
685 atomic_t mpaths;
686 /* Timestamp of last SN update */
687 unsigned long last_sn_update;
688 /* Time when it's ok to send next PERR */
689 unsigned long next_perr;
690 /* Timestamp of last PREQ sent */
691 unsigned long last_preq;
692 struct mesh_rmc *rmc;
693 spinlock_t mesh_preq_queue_lock;
694 struct mesh_preq_queue preq_queue;
695 int preq_queue_len;
696 struct mesh_stats mshstats;
697 struct mesh_config mshcfg;
698 atomic_t estab_plinks;
699 u32 mesh_seqnum;
700 bool accepting_plinks;
701 int num_gates;
702 struct beacon_data __rcu *beacon;
703 const u8 *ie;
704 u8 ie_len;
705 enum {
706 IEEE80211_MESH_SEC_NONE = 0x0,
707 IEEE80211_MESH_SEC_AUTHED = 0x1,
708 IEEE80211_MESH_SEC_SECURED = 0x2,
709 } security;
710 bool user_mpm;
711 /* Extensible Synchronization Framework */
712 const struct ieee80211_mesh_sync_ops *sync_ops;
713 s64 sync_offset_clockdrift_max;
714 spinlock_t sync_offset_lock;
715 /* mesh power save */
716 enum nl80211_mesh_power_mode nonpeer_pm;
717 int ps_peers_light_sleep;
718 int ps_peers_deep_sleep;
719 struct ps_data ps;
720 /* Channel Switching Support */
721 struct mesh_csa_settings __rcu *csa;
722 enum {
723 IEEE80211_MESH_CSA_ROLE_NONE,
724 IEEE80211_MESH_CSA_ROLE_INIT,
725 IEEE80211_MESH_CSA_ROLE_REPEATER,
726 } csa_role;
727 u8 chsw_ttl;
728 u16 pre_value;
729
730 /* offset from skb->data while building IE */
731 int meshconf_offset;
732
733 struct mesh_table mesh_paths;
734 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */
735 int mesh_paths_generation;
736 int mpp_paths_generation;
737 };
738
739 #ifdef CONFIG_MAC80211_MESH
740 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
741 do { (msh)->mshstats.name++; } while (0)
742 #else
743 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
744 do { } while (0)
745 #endif
746
747 /**
748 * enum ieee80211_sub_if_data_flags - virtual interface flags
749 *
750 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
751 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
752 * associated stations and deliver multicast frames both
753 * back to wireless media and to the local net stack.
754 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
755 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
756 * @IEEE80211_SDATA_DISCONNECT_HW_RESTART: Disconnect after hardware restart
757 * recovery
758 */
759 enum ieee80211_sub_if_data_flags {
760 IEEE80211_SDATA_ALLMULTI = BIT(0),
761 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
762 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
763 IEEE80211_SDATA_IN_DRIVER = BIT(5),
764 IEEE80211_SDATA_DISCONNECT_HW_RESTART = BIT(6),
765 };
766
767 /**
768 * enum ieee80211_sdata_state_bits - virtual interface state bits
769 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
770 * mirrors netif_running() but is separate for interface type
771 * change handling while the interface is up
772 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
773 * mode, so queues are stopped
774 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
775 * to offchannel, reset when offchannel returns
776 */
777 enum ieee80211_sdata_state_bits {
778 SDATA_STATE_RUNNING,
779 SDATA_STATE_OFFCHANNEL,
780 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
781 };
782
783 /**
784 * enum ieee80211_chanctx_mode - channel context configuration mode
785 *
786 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
787 * multiple interfaces
788 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
789 * only by a single interface. This can be used for example for
790 * non-fixed channel IBSS.
791 */
792 enum ieee80211_chanctx_mode {
793 IEEE80211_CHANCTX_SHARED,
794 IEEE80211_CHANCTX_EXCLUSIVE
795 };
796
797 /**
798 * enum ieee80211_chanctx_replace_state - channel context replacement state
799 *
800 * This is used for channel context in-place reservations that require channel
801 * context switch/swap.
802 *
803 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
804 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
805 * by a (not yet registered) channel context pointed by %replace_ctx.
806 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
807 * replaces an existing channel context pointed to by %replace_ctx.
808 */
809 enum ieee80211_chanctx_replace_state {
810 IEEE80211_CHANCTX_REPLACE_NONE,
811 IEEE80211_CHANCTX_WILL_BE_REPLACED,
812 IEEE80211_CHANCTX_REPLACES_OTHER,
813 };
814
815 struct ieee80211_chanctx {
816 struct list_head list;
817 struct rcu_head rcu_head;
818
819 struct list_head assigned_links;
820 struct list_head reserved_links;
821
822 enum ieee80211_chanctx_replace_state replace_state;
823 struct ieee80211_chanctx *replace_ctx;
824
825 enum ieee80211_chanctx_mode mode;
826 bool driver_present;
827
828 struct ieee80211_chanctx_conf conf;
829 };
830
831 struct mac80211_qos_map {
832 struct cfg80211_qos_map qos_map;
833 struct rcu_head rcu_head;
834 };
835
836 enum txq_info_flags {
837 IEEE80211_TXQ_STOP,
838 IEEE80211_TXQ_AMPDU,
839 IEEE80211_TXQ_NO_AMSDU,
840 IEEE80211_TXQ_DIRTY,
841 };
842
843 /**
844 * struct txq_info - per tid queue
845 *
846 * @tin: contains packets split into multiple flows
847 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
848 * a fq_flow which is already owned by a different tin
849 * @def_cvars: codel vars for @def_flow
850 * @frags: used to keep fragments created after dequeue
851 * @schedule_order: used with ieee80211_local->active_txqs
852 * @schedule_round: counter to prevent infinite loops on TXQ scheduling
853 */
854 struct txq_info {
855 struct fq_tin tin;
856 struct codel_vars def_cvars;
857 struct codel_stats cstats;
858
859 u16 schedule_round;
860 struct list_head schedule_order;
861
862 struct sk_buff_head frags;
863
864 unsigned long flags;
865
866 /* keep last! */
867 struct ieee80211_txq txq;
868 };
869
870 struct ieee80211_if_mntr {
871 u32 flags;
872 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
873
874 struct list_head list;
875 };
876
877 /**
878 * struct ieee80211_if_nan - NAN state
879 *
880 * @conf: current NAN configuration
881 * @func_ids: a bitmap of available instance_id's
882 */
883 struct ieee80211_if_nan {
884 struct cfg80211_nan_conf conf;
885
886 /* protects function_inst_ids */
887 spinlock_t func_lock;
888 struct idr function_inst_ids;
889 };
890
891 struct ieee80211_link_data_managed {
892 u8 bssid[ETH_ALEN] __aligned(2);
893
894 u8 dtim_period;
895 enum ieee80211_smps_mode req_smps, /* requested smps mode */
896 driver_smps_mode; /* smps mode request */
897
898 ieee80211_conn_flags_t conn_flags;
899
900 s16 p2p_noa_index;
901
902 bool tdls_chan_switch_prohibited;
903
904 bool have_beacon;
905 bool tracking_signal_avg;
906 bool disable_wmm_tracking;
907 bool operating_11g_mode;
908
909 bool csa_waiting_bcn;
910 bool csa_ignored_same_chan;
911 struct timer_list chswitch_timer;
912 struct work_struct chswitch_work;
913
914 struct work_struct request_smps_work;
915 bool beacon_crc_valid;
916 u32 beacon_crc;
917 struct ewma_beacon_signal ave_beacon_signal;
918 int last_ave_beacon_signal;
919
920 /*
921 * Number of Beacon frames used in ave_beacon_signal. This can be used
922 * to avoid generating less reliable cqm events that would be based
923 * only on couple of received frames.
924 */
925 unsigned int count_beacon_signal;
926
927 /* Number of times beacon loss was invoked. */
928 unsigned int beacon_loss_count;
929
930 /*
931 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
932 * that triggered a cqm event. 0 indicates that no event has been
933 * generated for the current association.
934 */
935 int last_cqm_event_signal;
936
937 int wmm_last_param_set;
938 int mu_edca_last_param_set;
939
940 struct cfg80211_bss *bss;
941 };
942
943 struct ieee80211_link_data_ap {
944 struct beacon_data __rcu *beacon;
945 struct probe_resp __rcu *probe_resp;
946 struct fils_discovery_data __rcu *fils_discovery;
947 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp;
948
949 /* to be used after channel switch. */
950 struct cfg80211_beacon_data *next_beacon;
951 };
952
953 struct ieee80211_link_data {
954 struct ieee80211_sub_if_data *sdata;
955 unsigned int link_id;
956
957 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
958 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
959
960 /* multicast keys only */
961 struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS +
962 NUM_DEFAULT_MGMT_KEYS +
963 NUM_DEFAULT_BEACON_KEYS];
964 struct ieee80211_key __rcu *default_multicast_key;
965 struct ieee80211_key __rcu *default_mgmt_key;
966 struct ieee80211_key __rcu *default_beacon_key;
967
968 struct work_struct csa_finalize_work;
969 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
970
971 bool operating_11g_mode;
972
973 struct cfg80211_chan_def csa_chandef;
974
975 struct work_struct color_change_finalize_work;
976 struct delayed_work color_collision_detect_work;
977 u64 color_bitmap;
978
979 /* context reservation -- protected with chanctx_mtx */
980 struct ieee80211_chanctx *reserved_chanctx;
981 struct cfg80211_chan_def reserved_chandef;
982 bool reserved_radar_required;
983 bool reserved_ready;
984
985 u8 needed_rx_chains;
986 enum ieee80211_smps_mode smps_mode;
987
988 int user_power_level; /* in dBm */
989 int ap_power_level; /* in dBm */
990
991 bool radar_required;
992 struct delayed_work dfs_cac_timer_work;
993
994 union {
995 struct ieee80211_link_data_managed mgd;
996 struct ieee80211_link_data_ap ap;
997 } u;
998
999 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
1000
1001 struct ieee80211_bss_conf *conf;
1002 };
1003
1004 struct ieee80211_sub_if_data {
1005 struct list_head list;
1006
1007 struct wireless_dev wdev;
1008
1009 /* keys */
1010 struct list_head key_list;
1011
1012 /* count for keys needing tailroom space allocation */
1013 int crypto_tx_tailroom_needed_cnt;
1014 int crypto_tx_tailroom_pending_dec;
1015 struct delayed_work dec_tailroom_needed_wk;
1016
1017 struct net_device *dev;
1018 struct ieee80211_local *local;
1019
1020 unsigned int flags;
1021
1022 unsigned long state;
1023
1024 char name[IFNAMSIZ];
1025
1026 struct ieee80211_fragment_cache frags;
1027
1028 /* TID bitmap for NoAck policy */
1029 u16 noack_map;
1030
1031 /* bit field of ACM bits (BIT(802.1D tag)) */
1032 u8 wmm_acm;
1033
1034 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS];
1035 struct ieee80211_key __rcu *default_unicast_key;
1036
1037 u16 sequence_number;
1038 u16 mld_mcast_seq;
1039 __be16 control_port_protocol;
1040 bool control_port_no_encrypt;
1041 bool control_port_no_preauth;
1042 bool control_port_over_nl80211;
1043
1044 atomic_t num_tx_queued;
1045 struct mac80211_qos_map __rcu *qos_map;
1046
1047 /* used to reconfigure hardware SM PS */
1048 struct work_struct recalc_smps;
1049
1050 struct work_struct work;
1051 struct sk_buff_head skb_queue;
1052 struct sk_buff_head status_queue;
1053
1054 /*
1055 * AP this belongs to: self in AP mode and
1056 * corresponding AP in VLAN mode, NULL for
1057 * all others (might be needed later in IBSS)
1058 */
1059 struct ieee80211_if_ap *bss;
1060
1061 /* bitmap of allowed (non-MCS) rate indexes for rate control */
1062 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
1063
1064 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
1065 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
1066
1067 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
1068 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
1069
1070 /* Beacon frame (non-MCS) rate (as a bitmap) */
1071 u32 beacon_rateidx_mask[NUM_NL80211_BANDS];
1072 bool beacon_rate_set;
1073
1074 union {
1075 struct ieee80211_if_ap ap;
1076 struct ieee80211_if_vlan vlan;
1077 struct ieee80211_if_managed mgd;
1078 struct ieee80211_if_ibss ibss;
1079 struct ieee80211_if_mesh mesh;
1080 struct ieee80211_if_ocb ocb;
1081 struct ieee80211_if_mntr mntr;
1082 struct ieee80211_if_nan nan;
1083 } u;
1084
1085 struct ieee80211_link_data deflink;
1086 struct ieee80211_link_data __rcu *link[IEEE80211_MLD_MAX_NUM_LINKS];
1087
1088 /* for ieee80211_set_active_links_async() */
1089 struct work_struct activate_links_work;
1090 u16 desired_active_links;
1091
1092 #ifdef CONFIG_MAC80211_DEBUGFS
1093 struct {
1094 struct dentry *subdir_stations;
1095 struct dentry *default_unicast_key;
1096 struct dentry *default_multicast_key;
1097 struct dentry *default_mgmt_key;
1098 struct dentry *default_beacon_key;
1099 } debugfs;
1100 #endif
1101
1102 /* must be last, dynamically sized area in this! */
1103 struct ieee80211_vif vif;
1104 };
1105
1106 static inline
vif_to_sdata(struct ieee80211_vif * p)1107 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
1108 {
1109 return container_of(p, struct ieee80211_sub_if_data, vif);
1110 }
1111
sdata_lock(struct ieee80211_sub_if_data * sdata)1112 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
1113 __acquires(&sdata->wdev.mtx)
1114 {
1115 mutex_lock(&sdata->wdev.mtx);
1116 __acquire(&sdata->wdev.mtx);
1117 }
1118
sdata_unlock(struct ieee80211_sub_if_data * sdata)1119 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
1120 __releases(&sdata->wdev.mtx)
1121 {
1122 mutex_unlock(&sdata->wdev.mtx);
1123 __release(&sdata->wdev.mtx);
1124 }
1125
1126 #define sdata_dereference(p, sdata) \
1127 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
1128
1129 static inline void
sdata_assert_lock(struct ieee80211_sub_if_data * sdata)1130 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
1131 {
1132 lockdep_assert_held(&sdata->wdev.mtx);
1133 }
1134
1135 static inline int
ieee80211_chanwidth_get_shift(enum nl80211_chan_width width)1136 ieee80211_chanwidth_get_shift(enum nl80211_chan_width width)
1137 {
1138 switch (width) {
1139 case NL80211_CHAN_WIDTH_5:
1140 return 2;
1141 case NL80211_CHAN_WIDTH_10:
1142 return 1;
1143 default:
1144 return 0;
1145 }
1146 }
1147
1148 static inline int
ieee80211_chandef_get_shift(struct cfg80211_chan_def * chandef)1149 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1150 {
1151 return ieee80211_chanwidth_get_shift(chandef->width);
1152 }
1153
1154 static inline int
ieee80211_vif_get_shift(struct ieee80211_vif * vif)1155 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1156 {
1157 struct ieee80211_chanctx_conf *chanctx_conf;
1158 int shift = 0;
1159
1160 rcu_read_lock();
1161 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf);
1162 if (chanctx_conf)
1163 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1164 rcu_read_unlock();
1165
1166 return shift;
1167 }
1168
1169 static inline int
ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems * elems)1170 ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems)
1171 {
1172 int i, len = 0;
1173
1174 if (!elems)
1175 return 0;
1176
1177 for (i = 0; i < elems->cnt; i++)
1178 len += elems->elem[i].len;
1179
1180 return len;
1181 }
1182
1183 enum {
1184 IEEE80211_RX_MSG = 1,
1185 IEEE80211_TX_STATUS_MSG = 2,
1186 };
1187
1188 enum queue_stop_reason {
1189 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1190 IEEE80211_QUEUE_STOP_REASON_PS,
1191 IEEE80211_QUEUE_STOP_REASON_CSA,
1192 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1193 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1194 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1195 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1196 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1197 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1198 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1199 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE,
1200
1201 IEEE80211_QUEUE_STOP_REASONS,
1202 };
1203
1204 #ifdef CONFIG_MAC80211_LEDS
1205 struct tpt_led_trigger {
1206 char name[32];
1207 const struct ieee80211_tpt_blink *blink_table;
1208 unsigned int blink_table_len;
1209 struct timer_list timer;
1210 struct ieee80211_local *local;
1211 unsigned long prev_traffic;
1212 unsigned long tx_bytes, rx_bytes;
1213 unsigned int active, want;
1214 bool running;
1215 };
1216 #endif
1217
1218 /**
1219 * mac80211 scan flags - currently active scan mode
1220 *
1221 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1222 * well be on the operating channel
1223 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1224 * determine if we are on the operating channel or not
1225 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1226 * channel. This should not interrupt normal traffic.
1227 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1228 * that the scan completed.
1229 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1230 * a scan complete for an aborted scan.
1231 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1232 * cancelled.
1233 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR
1234 * and could send a probe request after receiving a beacon.
1235 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request
1236 */
1237 enum {
1238 SCAN_SW_SCANNING,
1239 SCAN_HW_SCANNING,
1240 SCAN_ONCHANNEL_SCANNING,
1241 SCAN_COMPLETED,
1242 SCAN_ABORTED,
1243 SCAN_HW_CANCELLED,
1244 SCAN_BEACON_WAIT,
1245 SCAN_BEACON_DONE,
1246 };
1247
1248 /**
1249 * enum mac80211_scan_state - scan state machine states
1250 *
1251 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1252 * determines if we should keep on scanning or switch back to the
1253 * operating channel
1254 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1255 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1256 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1257 * send out data
1258 * @SCAN_RESUME: Resume the scan and scan the next channel
1259 * @SCAN_ABORT: Abort the scan and go back to operating channel
1260 */
1261 enum mac80211_scan_state {
1262 SCAN_DECISION,
1263 SCAN_SET_CHANNEL,
1264 SCAN_SEND_PROBE,
1265 SCAN_SUSPEND,
1266 SCAN_RESUME,
1267 SCAN_ABORT,
1268 };
1269
1270 DECLARE_STATIC_KEY_FALSE(aql_disable);
1271
1272 struct ieee80211_local {
1273 /* embed the driver visible part.
1274 * don't cast (use the static inlines below), but we keep
1275 * it first anyway so they become a no-op */
1276 struct ieee80211_hw hw;
1277
1278 struct fq fq;
1279 struct codel_vars *cvars;
1280 struct codel_params cparams;
1281
1282 /* protects active_txqs and txqi->schedule_order */
1283 spinlock_t active_txq_lock[IEEE80211_NUM_ACS];
1284 struct list_head active_txqs[IEEE80211_NUM_ACS];
1285 u16 schedule_round[IEEE80211_NUM_ACS];
1286
1287 u16 airtime_flags;
1288 u32 aql_txq_limit_low[IEEE80211_NUM_ACS];
1289 u32 aql_txq_limit_high[IEEE80211_NUM_ACS];
1290 u32 aql_threshold;
1291 atomic_t aql_total_pending_airtime;
1292 atomic_t aql_ac_pending_airtime[IEEE80211_NUM_ACS];
1293
1294 const struct ieee80211_ops *ops;
1295
1296 /*
1297 * private workqueue to mac80211. mac80211 makes this accessible
1298 * via ieee80211_queue_work()
1299 */
1300 struct workqueue_struct *workqueue;
1301
1302 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1303 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1304 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1305 spinlock_t queue_stop_reason_lock;
1306
1307 int open_count;
1308 int monitors, cooked_mntrs;
1309 /* number of interfaces with corresponding FIF_ flags */
1310 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1311 fif_probe_req;
1312 bool probe_req_reg;
1313 bool rx_mcast_action_reg;
1314 unsigned int filter_flags; /* FIF_* */
1315
1316 bool wiphy_ciphers_allocated;
1317
1318 bool use_chanctx;
1319
1320 /* protects the aggregated multicast list and filter calls */
1321 spinlock_t filter_lock;
1322
1323 /* used for uploading changed mc list */
1324 struct work_struct reconfig_filter;
1325
1326 /* aggregated multicast list */
1327 struct netdev_hw_addr_list mc_list;
1328
1329 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1330
1331 /*
1332 * suspended is true if we finished all the suspend _and_ we have
1333 * not yet come up from resume. This is to be used by mac80211
1334 * to ensure driver sanity during suspend and mac80211's own
1335 * sanity. It can eventually be used for WoW as well.
1336 */
1337 bool suspended;
1338
1339 /* suspending is true during the whole suspend process */
1340 bool suspending;
1341
1342 /*
1343 * Resuming is true while suspended, but when we're reprogramming the
1344 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1345 * again even though some other parts of the stack are still suspended
1346 * and we still drop received frames to avoid waking the stack.
1347 */
1348 bool resuming;
1349
1350 /*
1351 * quiescing is true during the suspend process _only_ to
1352 * ease timer cancelling etc.
1353 */
1354 bool quiescing;
1355
1356 /* device is started */
1357 bool started;
1358
1359 /* device is during a HW reconfig */
1360 bool in_reconfig;
1361
1362 /* wowlan is enabled -- don't reconfig on resume */
1363 bool wowlan;
1364
1365 struct work_struct radar_detected_work;
1366
1367 /* number of RX chains the hardware has */
1368 u8 rx_chains;
1369
1370 /* bitmap of which sbands were copied */
1371 u8 sband_allocated;
1372
1373 int tx_headroom; /* required headroom for hardware/radiotap */
1374
1375 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1376 * added to skb_queue will be processed, but frames in
1377 * skb_queue_unreliable may be dropped if the total length of these
1378 * queues increases over the limit. */
1379 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1380 struct tasklet_struct tasklet;
1381 struct sk_buff_head skb_queue;
1382 struct sk_buff_head skb_queue_unreliable;
1383
1384 spinlock_t rx_path_lock;
1385
1386 /* Station data */
1387 /*
1388 * The mutex only protects the list, hash table and
1389 * counter, reads are done with RCU.
1390 */
1391 struct mutex sta_mtx;
1392 spinlock_t tim_lock;
1393 unsigned long num_sta;
1394 struct list_head sta_list;
1395 struct rhltable sta_hash;
1396 struct rhltable link_sta_hash;
1397 struct timer_list sta_cleanup;
1398 int sta_generation;
1399
1400 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1401 struct tasklet_struct tx_pending_tasklet;
1402 struct tasklet_struct wake_txqs_tasklet;
1403
1404 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1405
1406 /* number of interfaces with allmulti RX */
1407 atomic_t iff_allmultis;
1408
1409 struct rate_control_ref *rate_ctrl;
1410
1411 struct arc4_ctx wep_tx_ctx;
1412 struct arc4_ctx wep_rx_ctx;
1413 u32 wep_iv;
1414
1415 /* see iface.c */
1416 struct list_head interfaces;
1417 struct list_head mon_list; /* only that are IFF_UP && !cooked */
1418 struct mutex iflist_mtx;
1419
1420 /*
1421 * Key mutex, protects sdata's key_list and sta_info's
1422 * key pointers and ptk_idx (write access, they're RCU.)
1423 */
1424 struct mutex key_mtx;
1425
1426 /* mutex for scan and work locking */
1427 struct mutex mtx;
1428
1429 /* Scanning and BSS list */
1430 unsigned long scanning;
1431 struct cfg80211_ssid scan_ssid;
1432 struct cfg80211_scan_request *int_scan_req;
1433 struct cfg80211_scan_request __rcu *scan_req;
1434 struct ieee80211_scan_request *hw_scan_req;
1435 struct cfg80211_chan_def scan_chandef;
1436 enum nl80211_band hw_scan_band;
1437 int scan_channel_idx;
1438 int scan_ies_len;
1439 int hw_scan_ies_bufsize;
1440 struct cfg80211_scan_info scan_info;
1441
1442 struct work_struct sched_scan_stopped_work;
1443 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1444 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1445 u8 scan_addr[ETH_ALEN];
1446
1447 unsigned long leave_oper_channel_time;
1448 enum mac80211_scan_state next_scan_state;
1449 struct delayed_work scan_work;
1450 struct ieee80211_sub_if_data __rcu *scan_sdata;
1451 /* For backward compatibility only -- do not use */
1452 struct cfg80211_chan_def _oper_chandef;
1453
1454 /* Temporary remain-on-channel for off-channel operations */
1455 struct ieee80211_channel *tmp_channel;
1456
1457 /* channel contexts */
1458 struct list_head chanctx_list;
1459 struct mutex chanctx_mtx;
1460
1461 #ifdef CONFIG_MAC80211_LEDS
1462 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1463 struct led_trigger tpt_led;
1464 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1465 atomic_t radio_led_active, tpt_led_active;
1466 struct tpt_led_trigger *tpt_led_trigger;
1467 #endif
1468
1469 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1470 /* SNMP counters */
1471 /* dot11CountersTable */
1472 u32 dot11TransmittedFragmentCount;
1473 u32 dot11MulticastTransmittedFrameCount;
1474 u32 dot11FailedCount;
1475 u32 dot11RetryCount;
1476 u32 dot11MultipleRetryCount;
1477 u32 dot11FrameDuplicateCount;
1478 u32 dot11ReceivedFragmentCount;
1479 u32 dot11MulticastReceivedFrameCount;
1480 u32 dot11TransmittedFrameCount;
1481
1482 /* TX/RX handler statistics */
1483 unsigned int tx_handlers_drop;
1484 unsigned int tx_handlers_queued;
1485 unsigned int tx_handlers_drop_wep;
1486 unsigned int tx_handlers_drop_not_assoc;
1487 unsigned int tx_handlers_drop_unauth_port;
1488 unsigned int rx_handlers_drop;
1489 unsigned int rx_handlers_queued;
1490 unsigned int rx_handlers_drop_nullfunc;
1491 unsigned int rx_handlers_drop_defrag;
1492 unsigned int tx_expand_skb_head;
1493 unsigned int tx_expand_skb_head_cloned;
1494 unsigned int rx_expand_skb_head_defrag;
1495 unsigned int rx_handlers_fragments;
1496 unsigned int tx_status_drop;
1497 #define I802_DEBUG_INC(c) (c)++
1498 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1499 #define I802_DEBUG_INC(c) do { } while (0)
1500 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1501
1502
1503 int total_ps_buffered; /* total number of all buffered unicast and
1504 * multicast packets for power saving stations
1505 */
1506
1507 bool pspolling;
1508 /*
1509 * PS can only be enabled when we have exactly one managed
1510 * interface (and monitors) in PS, this then points there.
1511 */
1512 struct ieee80211_sub_if_data *ps_sdata;
1513 struct work_struct dynamic_ps_enable_work;
1514 struct work_struct dynamic_ps_disable_work;
1515 struct timer_list dynamic_ps_timer;
1516 struct notifier_block ifa_notifier;
1517 struct notifier_block ifa6_notifier;
1518
1519 /*
1520 * The dynamic ps timeout configured from user space via WEXT -
1521 * this will override whatever chosen by mac80211 internally.
1522 */
1523 int dynamic_ps_forced_timeout;
1524
1525 int user_power_level; /* in dBm, for all interfaces */
1526
1527 enum ieee80211_smps_mode smps_mode;
1528
1529 struct work_struct restart_work;
1530
1531 #ifdef CONFIG_MAC80211_DEBUGFS
1532 struct local_debugfsdentries {
1533 struct dentry *rcdir;
1534 struct dentry *keys;
1535 } debugfs;
1536 bool force_tx_status;
1537 #endif
1538
1539 /*
1540 * Remain-on-channel support
1541 */
1542 struct delayed_work roc_work;
1543 struct list_head roc_list;
1544 struct work_struct hw_roc_start, hw_roc_done;
1545 unsigned long hw_roc_start_time;
1546 u64 roc_cookie_counter;
1547
1548 struct idr ack_status_frames;
1549 spinlock_t ack_status_lock;
1550
1551 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1552
1553 /* virtual monitor interface */
1554 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1555 struct cfg80211_chan_def monitor_chandef;
1556
1557 /* extended capabilities provided by mac80211 */
1558 u8 ext_capa[8];
1559 };
1560
1561 static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(const struct net_device * dev)1562 IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev)
1563 {
1564 return netdev_priv(dev);
1565 }
1566
1567 static inline struct ieee80211_sub_if_data *
IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev * wdev)1568 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1569 {
1570 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1571 }
1572
1573 static inline struct ieee80211_supported_band *
ieee80211_get_sband(struct ieee80211_sub_if_data * sdata)1574 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1575 {
1576 struct ieee80211_local *local = sdata->local;
1577 struct ieee80211_chanctx_conf *chanctx_conf;
1578 enum nl80211_band band;
1579
1580 WARN_ON(sdata->vif.valid_links);
1581
1582 rcu_read_lock();
1583 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
1584
1585 if (!chanctx_conf) {
1586 rcu_read_unlock();
1587 return NULL;
1588 }
1589
1590 band = chanctx_conf->def.chan->band;
1591 rcu_read_unlock();
1592
1593 return local->hw.wiphy->bands[band];
1594 }
1595
1596 static inline struct ieee80211_supported_band *
ieee80211_get_link_sband(struct ieee80211_link_data * link)1597 ieee80211_get_link_sband(struct ieee80211_link_data *link)
1598 {
1599 struct ieee80211_local *local = link->sdata->local;
1600 struct ieee80211_chanctx_conf *chanctx_conf;
1601 enum nl80211_band band;
1602
1603 rcu_read_lock();
1604 chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
1605 if (!chanctx_conf) {
1606 rcu_read_unlock();
1607 return NULL;
1608 }
1609
1610 band = chanctx_conf->def.chan->band;
1611 rcu_read_unlock();
1612
1613 return local->hw.wiphy->bands[band];
1614 }
1615
1616 /* this struct holds the value parsing from channel switch IE */
1617 struct ieee80211_csa_ie {
1618 struct cfg80211_chan_def chandef;
1619 u8 mode;
1620 u8 count;
1621 u8 ttl;
1622 u16 pre_value;
1623 u16 reason_code;
1624 u32 max_switch_time;
1625 };
1626
1627 /* Parsed Information Elements */
1628 struct ieee802_11_elems {
1629 const u8 *ie_start;
1630 size_t total_len;
1631 u32 crc;
1632
1633 /* pointers to IEs */
1634 const struct ieee80211_tdls_lnkie *lnk_id;
1635 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1636 const u8 *ext_capab;
1637 const u8 *ssid;
1638 const u8 *supp_rates;
1639 const u8 *ds_params;
1640 const struct ieee80211_tim_ie *tim;
1641 const u8 *rsn;
1642 const u8 *rsnx;
1643 const u8 *erp_info;
1644 const u8 *ext_supp_rates;
1645 const u8 *wmm_info;
1646 const u8 *wmm_param;
1647 const struct ieee80211_ht_cap *ht_cap_elem;
1648 const struct ieee80211_ht_operation *ht_operation;
1649 const struct ieee80211_vht_cap *vht_cap_elem;
1650 const struct ieee80211_vht_operation *vht_operation;
1651 const struct ieee80211_meshconf_ie *mesh_config;
1652 const u8 *he_cap;
1653 const struct ieee80211_he_operation *he_operation;
1654 const struct ieee80211_he_spr *he_spr;
1655 const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1656 const struct ieee80211_he_6ghz_capa *he_6ghz_capa;
1657 const struct ieee80211_tx_pwr_env *tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT];
1658 const u8 *uora_element;
1659 const u8 *mesh_id;
1660 const u8 *peering;
1661 const __le16 *awake_window;
1662 const u8 *preq;
1663 const u8 *prep;
1664 const u8 *perr;
1665 const struct ieee80211_rann_ie *rann;
1666 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1667 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1668 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1669 const u8 *max_channel_switch_time;
1670 const u8 *country_elem;
1671 const u8 *pwr_constr_elem;
1672 const u8 *cisco_dtpc_elem;
1673 const struct ieee80211_timeout_interval_ie *timeout_int;
1674 const u8 *opmode_notif;
1675 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1676 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1677 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1678 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
1679 const struct ieee80211_bssid_index *bssid_index;
1680 u8 max_bssid_indicator;
1681 u8 dtim_count;
1682 u8 dtim_period;
1683 const struct ieee80211_addba_ext_ie *addba_ext_ie;
1684 const struct ieee80211_s1g_cap *s1g_capab;
1685 const struct ieee80211_s1g_oper_ie *s1g_oper;
1686 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat;
1687 const struct ieee80211_aid_response_ie *aid_resp;
1688 const struct ieee80211_eht_cap_elem *eht_cap;
1689 const struct ieee80211_eht_operation *eht_operation;
1690 const struct ieee80211_multi_link_elem *multi_link;
1691
1692 /* length of them, respectively */
1693 u8 ext_capab_len;
1694 u8 ssid_len;
1695 u8 supp_rates_len;
1696 u8 tim_len;
1697 u8 rsn_len;
1698 u8 rsnx_len;
1699 u8 ext_supp_rates_len;
1700 u8 wmm_info_len;
1701 u8 wmm_param_len;
1702 u8 he_cap_len;
1703 u8 mesh_id_len;
1704 u8 peering_len;
1705 u8 preq_len;
1706 u8 prep_len;
1707 u8 perr_len;
1708 u8 country_elem_len;
1709 u8 bssid_index_len;
1710 u8 tx_pwr_env_len[IEEE80211_TPE_MAX_IE_COUNT];
1711 u8 tx_pwr_env_num;
1712 u8 eht_cap_len;
1713
1714 /* mult-link element can be de-fragmented and thus u8 is not sufficient */
1715 size_t multi_link_len;
1716
1717 /*
1718 * store the per station profile pointer and length in case that the
1719 * parsing also handled Multi-Link element parsing for a specific link
1720 * ID.
1721 */
1722 struct ieee80211_mle_per_sta_profile *prof;
1723 size_t sta_prof_len;
1724
1725 /* whether a parse error occurred while retrieving these elements */
1726 bool parse_error;
1727
1728 /*
1729 * scratch buffer that can be used for various element parsing related
1730 * tasks, e.g., element de-fragmentation etc.
1731 */
1732 size_t scratch_len;
1733 u8 *scratch_pos;
1734 u8 scratch[];
1735 };
1736
hw_to_local(struct ieee80211_hw * hw)1737 static inline struct ieee80211_local *hw_to_local(
1738 struct ieee80211_hw *hw)
1739 {
1740 return container_of(hw, struct ieee80211_local, hw);
1741 }
1742
to_txq_info(struct ieee80211_txq * txq)1743 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1744 {
1745 return container_of(txq, struct txq_info, txq);
1746 }
1747
txq_has_queue(struct ieee80211_txq * txq)1748 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1749 {
1750 struct txq_info *txqi = to_txq_info(txq);
1751
1752 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1753 }
1754
1755 static inline bool
ieee80211_have_rx_timestamp(struct ieee80211_rx_status * status)1756 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1757 {
1758 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1759 status->flag & RX_FLAG_MACTIME_END);
1760 return !!(status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END |
1761 RX_FLAG_MACTIME_PLCP_START));
1762 }
1763
1764 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1765 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1766
1767 /* This function returns the number of multicast stations connected to this
1768 * interface. It returns -1 if that number is not tracked, that is for netdevs
1769 * not in AP or AP_VLAN mode or when using 4addr.
1770 */
1771 static inline int
ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data * sdata)1772 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1773 {
1774 if (sdata->vif.type == NL80211_IFTYPE_AP)
1775 return atomic_read(&sdata->u.ap.num_mcast_sta);
1776 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1777 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1778 return -1;
1779 }
1780
1781 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1782 struct ieee80211_rx_status *status,
1783 unsigned int mpdu_len,
1784 unsigned int mpdu_offset);
1785 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1786 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1787 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1788 u64 changed);
1789 void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata,
1790 u64 changed);
1791 void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata,
1792 struct ieee80211_link_data *link,
1793 u64 changed);
1794 void ieee80211_configure_filter(struct ieee80211_local *local);
1795 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1796
1797 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1798 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1799 u64 *cookie, gfp_t gfp);
1800
1801 void ieee80211_check_fast_rx(struct sta_info *sta);
1802 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1803 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1804 void ieee80211_clear_fast_rx(struct sta_info *sta);
1805
1806 bool ieee80211_is_our_addr(struct ieee80211_sub_if_data *sdata,
1807 const u8 *addr, int *out_link_id);
1808
1809 /* STA code */
1810 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1811 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1812 struct cfg80211_auth_request *req);
1813 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1814 struct cfg80211_assoc_request *req);
1815 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1816 struct cfg80211_deauth_request *req);
1817 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1818 struct cfg80211_disassoc_request *req);
1819 void ieee80211_send_pspoll(struct ieee80211_local *local,
1820 struct ieee80211_sub_if_data *sdata);
1821 void ieee80211_recalc_ps(struct ieee80211_local *local);
1822 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1823 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1824 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1825 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1826 struct sk_buff *skb);
1827 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
1828 struct sk_buff *skb);
1829 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1830 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1831 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1832 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1833 __le16 fc, bool acked);
1834 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1835 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1836 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1837 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
1838 u8 reason, bool tx);
1839 void ieee80211_mgd_setup_link(struct ieee80211_link_data *link);
1840 void ieee80211_mgd_stop_link(struct ieee80211_link_data *link);
1841 void ieee80211_mgd_set_link_qos_params(struct ieee80211_link_data *link);
1842
1843 /* IBSS code */
1844 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1845 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1846 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1847 const u8 *bssid, const u8 *addr, u32 supp_rates);
1848 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1849 struct cfg80211_ibss_params *params);
1850 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1851 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1852 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1853 struct sk_buff *skb);
1854 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1855 struct cfg80211_csa_settings *csa_settings);
1856 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1857 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1858
1859 /* OCB code */
1860 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1861 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1862 const u8 *bssid, const u8 *addr, u32 supp_rates);
1863 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1864 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1865 struct ocb_setup *setup);
1866 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1867
1868 /* mesh code */
1869 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1870 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1871 struct sk_buff *skb);
1872 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1873 struct cfg80211_csa_settings *csa_settings);
1874 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1875
1876 /* scan/BSS handling */
1877 void ieee80211_scan_work(struct work_struct *work);
1878 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1879 const u8 *ssid, u8 ssid_len,
1880 struct ieee80211_channel **channels,
1881 unsigned int n_channels,
1882 enum nl80211_bss_scan_width scan_width);
1883 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1884 struct cfg80211_scan_request *req);
1885 void ieee80211_scan_cancel(struct ieee80211_local *local);
1886 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1887 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1888
1889 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1890 struct ieee80211_bss *
1891 ieee80211_bss_info_update(struct ieee80211_local *local,
1892 struct ieee80211_rx_status *rx_status,
1893 struct ieee80211_mgmt *mgmt,
1894 size_t len,
1895 struct ieee80211_channel *channel);
1896 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1897 struct ieee80211_bss *bss);
1898
1899 /* scheduled scan handling */
1900 int
1901 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1902 struct cfg80211_sched_scan_request *req);
1903 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1904 struct cfg80211_sched_scan_request *req);
1905 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1906 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1907 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1908
1909 /* off-channel/mgmt-tx */
1910 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1911 void ieee80211_offchannel_return(struct ieee80211_local *local);
1912 void ieee80211_roc_setup(struct ieee80211_local *local);
1913 void ieee80211_start_next_roc(struct ieee80211_local *local);
1914 void ieee80211_roc_purge(struct ieee80211_local *local,
1915 struct ieee80211_sub_if_data *sdata);
1916 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1917 struct ieee80211_channel *chan,
1918 unsigned int duration, u64 *cookie);
1919 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1920 struct wireless_dev *wdev, u64 cookie);
1921 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1922 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1923 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1924 struct wireless_dev *wdev, u64 cookie);
1925
1926 /* channel switch handling */
1927 void ieee80211_csa_finalize_work(struct work_struct *work);
1928 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1929 struct cfg80211_csa_settings *params);
1930
1931 /* color change handling */
1932 void ieee80211_color_change_finalize_work(struct work_struct *work);
1933 void ieee80211_color_collision_detection_work(struct work_struct *work);
1934
1935 /* interface handling */
1936 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
1937 NETIF_F_HW_CSUM | NETIF_F_SG | \
1938 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE)
1939 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM)
1940 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \
1941 MAC80211_SUPPORTED_FEATURES_RX)
1942
1943 int ieee80211_iface_init(void);
1944 void ieee80211_iface_exit(void);
1945 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1946 unsigned char name_assign_type,
1947 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1948 struct vif_params *params);
1949 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1950 enum nl80211_iftype type);
1951 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1952 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1953 u32 ieee80211_idle_off(struct ieee80211_local *local);
1954 void ieee80211_recalc_idle(struct ieee80211_local *local);
1955 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1956 const int offset);
1957 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1958 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1959 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1960 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1961
1962 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1963 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1964 bool update_bss);
1965 void ieee80211_recalc_offload(struct ieee80211_local *local);
1966
ieee80211_sdata_running(struct ieee80211_sub_if_data * sdata)1967 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1968 {
1969 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1970 }
1971
1972 /* link handling */
1973 void ieee80211_link_setup(struct ieee80211_link_data *link);
1974 void ieee80211_link_init(struct ieee80211_sub_if_data *sdata,
1975 int link_id,
1976 struct ieee80211_link_data *link,
1977 struct ieee80211_bss_conf *link_conf);
1978 void ieee80211_link_stop(struct ieee80211_link_data *link);
1979 int ieee80211_vif_set_links(struct ieee80211_sub_if_data *sdata,
1980 u16 new_links);
1981 void ieee80211_vif_clear_links(struct ieee80211_sub_if_data *sdata);
1982
1983 /* tx handling */
1984 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1985 void ieee80211_tx_pending(struct tasklet_struct *t);
1986 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1987 struct net_device *dev);
1988 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1989 struct net_device *dev);
1990 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb,
1991 struct net_device *dev);
1992 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1993 struct net_device *dev,
1994 u32 info_flags,
1995 u32 ctrl_flags,
1996 u64 *cookie);
1997 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1998 struct sk_buff_head *skbs);
1999 struct sk_buff *
2000 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
2001 struct sk_buff *skb, u32 info_flags);
2002 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
2003 int retry_count, int shift, bool send_to_cooked,
2004 struct ieee80211_tx_status *status);
2005
2006 void ieee80211_check_fast_xmit(struct sta_info *sta);
2007 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
2008 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
2009 void ieee80211_clear_fast_xmit(struct sta_info *sta);
2010 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
2011 const u8 *buf, size_t len,
2012 const u8 *dest, __be16 proto, bool unencrypted,
2013 int link_id, u64 *cookie);
2014 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
2015 const u8 *buf, size_t len);
2016
2017 /* HT */
2018 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
2019 struct ieee80211_sta_ht_cap *ht_cap);
2020 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
2021 struct ieee80211_supported_band *sband,
2022 const struct ieee80211_ht_cap *ht_cap_ie,
2023 struct link_sta_info *link_sta);
2024 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
2025 const u8 *da, u16 tid,
2026 u16 initiator, u16 reason_code);
2027 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
2028 enum ieee80211_smps_mode smps, const u8 *da,
2029 const u8 *bssid);
2030 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
2031 enum ieee80211_smps_mode smps_mode_new);
2032
2033 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
2034 u16 initiator, u16 reason, bool stop);
2035 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
2036 u16 initiator, u16 reason, bool stop);
2037 void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
2038 u8 dialog_token, u16 timeout,
2039 u16 start_seq_num, u16 ba_policy, u16 tid,
2040 u16 buf_size, bool tx, bool auto_seq,
2041 const struct ieee80211_addba_ext_ie *addbaext);
2042 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
2043 enum ieee80211_agg_stop_reason reason);
2044 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
2045 struct sta_info *sta,
2046 struct ieee80211_mgmt *mgmt, size_t len);
2047 void ieee80211_process_addba_resp(struct ieee80211_local *local,
2048 struct sta_info *sta,
2049 struct ieee80211_mgmt *mgmt,
2050 size_t len);
2051 void ieee80211_process_addba_request(struct ieee80211_local *local,
2052 struct sta_info *sta,
2053 struct ieee80211_mgmt *mgmt,
2054 size_t len);
2055
2056 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2057 enum ieee80211_agg_stop_reason reason);
2058 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2059 enum ieee80211_agg_stop_reason reason);
2060 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
2061 struct tid_ampdu_tx *tid_tx);
2062 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
2063 struct tid_ampdu_tx *tid_tx);
2064 void ieee80211_ba_session_work(struct work_struct *work);
2065 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
2066 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
2067
2068 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
2069 enum nl80211_smps_mode
2070 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
2071
2072 /* VHT */
2073 void
2074 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
2075 struct ieee80211_supported_band *sband,
2076 const struct ieee80211_vht_cap *vht_cap_ie,
2077 struct link_sta_info *link_sta);
2078 enum ieee80211_sta_rx_bandwidth
2079 ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta);
2080 enum ieee80211_sta_rx_bandwidth
2081 ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta);
2082 void ieee80211_sta_set_rx_nss(struct link_sta_info *link_sta);
2083 enum ieee80211_sta_rx_bandwidth
2084 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
2085 enum nl80211_chan_width
2086 ieee80211_sta_cap_chan_bw(struct link_sta_info *link_sta);
2087 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
2088 struct ieee80211_link_data *link,
2089 struct ieee80211_mgmt *mgmt);
2090 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2091 struct link_sta_info *sta,
2092 u8 opmode, enum nl80211_band band);
2093 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2094 struct link_sta_info *sta,
2095 u8 opmode, enum nl80211_band band);
2096 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
2097 struct ieee80211_sta_vht_cap *vht_cap);
2098 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
2099 u16 vht_mask[NL80211_VHT_NSS_MAX]);
2100 enum nl80211_chan_width
2101 ieee80211_sta_rx_bw_to_chan_width(struct link_sta_info *sta);
2102
2103 /* HE */
2104 void
2105 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
2106 struct ieee80211_supported_band *sband,
2107 const u8 *he_cap_ie, u8 he_cap_len,
2108 const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
2109 struct link_sta_info *link_sta);
2110 void
2111 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
2112 const struct ieee80211_he_spr *he_spr_ie_elem);
2113
2114 void
2115 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
2116 const struct ieee80211_he_operation *he_op_ie_elem);
2117
2118 /* S1G */
2119 void ieee80211_s1g_sta_rate_init(struct sta_info *sta);
2120 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb);
2121 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata,
2122 struct sk_buff *skb);
2123 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata,
2124 struct sk_buff *skb);
2125
2126 /* Spectrum management */
2127 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
2128 struct ieee80211_mgmt *mgmt,
2129 size_t len);
2130 /**
2131 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
2132 * @sdata: the sdata of the interface which has received the frame
2133 * @elems: parsed 802.11 elements received with the frame
2134 * @current_band: indicates the current band
2135 * @vht_cap_info: VHT capabilities of the transmitter
2136 * @conn_flags: contains information about own capabilities and restrictions
2137 * to decide which channel switch announcements can be accepted, using
2138 * flags from &enum ieee80211_conn_flags.
2139 * @bssid: the currently connected bssid (for reporting)
2140 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
2141 All of them will be filled with if success only.
2142 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
2143 */
2144 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
2145 struct ieee802_11_elems *elems,
2146 enum nl80211_band current_band,
2147 u32 vht_cap_info,
2148 ieee80211_conn_flags_t conn_flags, u8 *bssid,
2149 struct ieee80211_csa_ie *csa_ie);
2150
2151 /* Suspend/resume and hw reconfiguration */
2152 int ieee80211_reconfig(struct ieee80211_local *local);
2153 void ieee80211_stop_device(struct ieee80211_local *local);
2154
2155 int __ieee80211_suspend(struct ieee80211_hw *hw,
2156 struct cfg80211_wowlan *wowlan);
2157
__ieee80211_resume(struct ieee80211_hw * hw)2158 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
2159 {
2160 struct ieee80211_local *local = hw_to_local(hw);
2161
2162 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
2163 !test_bit(SCAN_COMPLETED, &local->scanning),
2164 "%s: resume with hardware scan still in progress\n",
2165 wiphy_name(hw->wiphy));
2166
2167 return ieee80211_reconfig(hw_to_local(hw));
2168 }
2169
2170 /* utility functions/constants */
2171 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
2172 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
2173 int rate, int erp, int short_preamble,
2174 int shift);
2175 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
2176 struct ieee80211_tx_queue_params *qparam,
2177 int ac);
2178 void ieee80211_set_wmm_default(struct ieee80211_link_data *link,
2179 bool bss_notify, bool enable_qos);
2180 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
2181 struct sta_info *sta, struct sk_buff *skb);
2182
2183 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2184 struct sk_buff *skb, int tid, int link_id,
2185 enum nl80211_band band);
2186
2187 /* sta_out needs to be checked for ERR_PTR() before using */
2188 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata,
2189 struct sk_buff *skb,
2190 struct sta_info **sta_out);
2191
2192 static inline void
ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid,enum nl80211_band band)2193 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2194 struct sk_buff *skb, int tid,
2195 enum nl80211_band band)
2196 {
2197 rcu_read_lock();
2198 __ieee80211_tx_skb_tid_band(sdata, skb, tid, -1, band);
2199 rcu_read_unlock();
2200 }
2201
2202 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
2203 struct sk_buff *skb, int tid, int link_id);
2204
ieee80211_tx_skb(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb)2205 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
2206 struct sk_buff *skb)
2207 {
2208 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
2209 ieee80211_tx_skb_tid(sdata, skb, 7, -1);
2210 }
2211
2212 /**
2213 * struct ieee80211_elems_parse_params - element parsing parameters
2214 * @start: pointer to the elements
2215 * @len: length of the elements
2216 * @action: %true if the elements came from an action frame
2217 * @filter: bitmap of element IDs to filter out while calculating
2218 * the element CRC
2219 * @crc: CRC starting value
2220 * @bss: the BSS to parse this as, for multi-BSSID cases this can
2221 * represent a non-transmitting BSS in which case the data
2222 * for that non-transmitting BSS is returned
2223 * @link_id: the link ID to parse elements for, if a STA profile
2224 * is present in the multi-link element, or -1 to ignore;
2225 * note that the code currently assumes parsing an association
2226 * (or re-association) response frame if this is given
2227 * @from_ap: frame is received from an AP (currently used only
2228 * for EHT capabilities parsing)
2229 * @scratch_len: if non zero, specifies the requested length of the scratch
2230 * buffer; otherwise, 'len' is used.
2231 */
2232 struct ieee80211_elems_parse_params {
2233 const u8 *start;
2234 size_t len;
2235 bool action;
2236 u64 filter;
2237 u32 crc;
2238 struct cfg80211_bss *bss;
2239 int link_id;
2240 bool from_ap;
2241 size_t scratch_len;
2242 };
2243
2244 struct ieee802_11_elems *
2245 ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params);
2246
2247 static inline struct ieee802_11_elems *
ieee802_11_parse_elems_crc(const u8 * start,size_t len,bool action,u64 filter,u32 crc,struct cfg80211_bss * bss)2248 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
2249 u64 filter, u32 crc,
2250 struct cfg80211_bss *bss)
2251 {
2252 struct ieee80211_elems_parse_params params = {
2253 .start = start,
2254 .len = len,
2255 .action = action,
2256 .filter = filter,
2257 .crc = crc,
2258 .bss = bss,
2259 .link_id = -1,
2260 };
2261
2262 return ieee802_11_parse_elems_full(¶ms);
2263 }
2264
2265 static inline struct ieee802_11_elems *
ieee802_11_parse_elems(const u8 * start,size_t len,bool action,struct cfg80211_bss * bss)2266 ieee802_11_parse_elems(const u8 *start, size_t len, bool action,
2267 struct cfg80211_bss *bss)
2268 {
2269 return ieee802_11_parse_elems_crc(start, len, action, 0, 0, bss);
2270 }
2271
2272 void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos);
2273
2274 extern const int ieee802_1d_to_ac[8];
2275
ieee80211_ac_from_tid(int tid)2276 static inline int ieee80211_ac_from_tid(int tid)
2277 {
2278 return ieee802_1d_to_ac[tid & 7];
2279 }
2280
2281 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
2282 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
2283 void ieee80211_dynamic_ps_timer(struct timer_list *t);
2284 void ieee80211_send_nullfunc(struct ieee80211_local *local,
2285 struct ieee80211_sub_if_data *sdata,
2286 bool powersave);
2287 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
2288 struct ieee80211_sub_if_data *sdata);
2289 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2290 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
2291
2292 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
2293 unsigned long queues,
2294 enum queue_stop_reason reason,
2295 bool refcounted);
2296 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
2297 struct ieee80211_sub_if_data *sdata,
2298 enum queue_stop_reason reason);
2299 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
2300 struct ieee80211_sub_if_data *sdata,
2301 enum queue_stop_reason reason);
2302 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
2303 unsigned long queues,
2304 enum queue_stop_reason reason,
2305 bool refcounted);
2306 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
2307 enum queue_stop_reason reason,
2308 bool refcounted);
2309 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
2310 enum queue_stop_reason reason,
2311 bool refcounted);
2312 void ieee80211_add_pending_skb(struct ieee80211_local *local,
2313 struct sk_buff *skb);
2314 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
2315 struct sk_buff_head *skbs);
2316 void ieee80211_flush_queues(struct ieee80211_local *local,
2317 struct ieee80211_sub_if_data *sdata, bool drop);
2318 void __ieee80211_flush_queues(struct ieee80211_local *local,
2319 struct ieee80211_sub_if_data *sdata,
2320 unsigned int queues, bool drop);
2321
ieee80211_can_run_worker(struct ieee80211_local * local)2322 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2323 {
2324 /*
2325 * It's unsafe to try to do any work during reconfigure flow.
2326 * When the flow ends the work will be requeued.
2327 */
2328 if (local->in_reconfig)
2329 return false;
2330
2331 /*
2332 * If quiescing is set, we are racing with __ieee80211_suspend.
2333 * __ieee80211_suspend flushes the workers after setting quiescing,
2334 * and we check quiescing / suspended before enqueing new workers.
2335 * We should abort the worker to avoid the races below.
2336 */
2337 if (local->quiescing)
2338 return false;
2339
2340 /*
2341 * We might already be suspended if the following scenario occurs:
2342 * __ieee80211_suspend Control path
2343 *
2344 * if (local->quiescing)
2345 * return;
2346 * local->quiescing = true;
2347 * flush_workqueue();
2348 * queue_work(...);
2349 * local->suspended = true;
2350 * local->quiescing = false;
2351 * worker starts running...
2352 */
2353 if (local->suspended)
2354 return false;
2355
2356 return true;
2357 }
2358
2359 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2360 void ieee80211_txq_set_params(struct ieee80211_local *local);
2361 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2362 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2363 struct sta_info *sta,
2364 struct txq_info *txq, int tid);
2365 void ieee80211_txq_purge(struct ieee80211_local *local,
2366 struct txq_info *txqi);
2367 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2368 struct ieee80211_sub_if_data *sdata);
2369 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2370 struct txq_info *txqi);
2371 void ieee80211_wake_txqs(struct tasklet_struct *t);
2372 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2373 u16 transaction, u16 auth_alg, u16 status,
2374 const u8 *extra, size_t extra_len, const u8 *bssid,
2375 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2376 u32 tx_flags);
2377 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2378 const u8 *da, const u8 *bssid,
2379 u16 stype, u16 reason,
2380 bool send_frame, u8 *frame_buf);
2381
2382 enum {
2383 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
2384 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
2385 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
2386 };
2387
2388 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2389 size_t buffer_len,
2390 struct ieee80211_scan_ies *ie_desc,
2391 const u8 *ie, size_t ie_len,
2392 u8 bands_used, u32 *rate_masks,
2393 struct cfg80211_chan_def *chandef,
2394 u32 flags);
2395 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2396 const u8 *src, const u8 *dst,
2397 u32 ratemask,
2398 struct ieee80211_channel *chan,
2399 const u8 *ssid, size_t ssid_len,
2400 const u8 *ie, size_t ie_len,
2401 u32 flags);
2402 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2403 struct ieee802_11_elems *elems,
2404 enum nl80211_band band, u32 *basic_rates);
2405 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2406 struct ieee80211_link_data *link,
2407 enum ieee80211_smps_mode smps_mode);
2408 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata,
2409 struct ieee80211_link_data *link);
2410 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata,
2411 int link_id);
2412
2413 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2414 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2415 u16 cap);
2416 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2417 const struct cfg80211_chan_def *chandef,
2418 u16 prot_mode, bool rifs_mode);
2419 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2420 const struct cfg80211_chan_def *chandef);
2421 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2422 u32 cap);
2423 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2424 const struct cfg80211_chan_def *chandef);
2425 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2426 u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos,
2427 const struct ieee80211_sta_he_cap *he_cap,
2428 u8 *end);
2429 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2430 enum ieee80211_smps_mode smps_mode,
2431 struct sk_buff *skb);
2432 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef);
2433 int ieee80211_parse_bitrates(enum nl80211_chan_width width,
2434 const struct ieee80211_supported_band *sband,
2435 const u8 *srates, int srates_len, u32 *rates);
2436 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2437 struct sk_buff *skb, bool need_basic,
2438 enum nl80211_band band);
2439 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2440 struct sk_buff *skb, bool need_basic,
2441 enum nl80211_band band);
2442 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2443 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
2444 struct ieee80211_sta_s1g_cap *caps,
2445 struct sk_buff *skb);
2446 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
2447 struct sk_buff *skb);
2448
2449 /* channel management */
2450 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2451 struct cfg80211_chan_def *chandef);
2452 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
2453 const struct ieee80211_vht_operation *oper,
2454 const struct ieee80211_ht_operation *htop,
2455 struct cfg80211_chan_def *chandef);
2456 void ieee80211_chandef_eht_oper(const struct ieee80211_eht_operation *eht_oper,
2457 bool support_160, bool support_320,
2458 struct cfg80211_chan_def *chandef);
2459 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
2460 const struct ieee80211_he_operation *he_oper,
2461 const struct ieee80211_eht_operation *eht_oper,
2462 struct cfg80211_chan_def *chandef);
2463 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
2464 struct cfg80211_chan_def *chandef);
2465 ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2466
2467 int __must_check
2468 ieee80211_link_use_channel(struct ieee80211_link_data *link,
2469 const struct cfg80211_chan_def *chandef,
2470 enum ieee80211_chanctx_mode mode);
2471 int __must_check
2472 ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link,
2473 const struct cfg80211_chan_def *chandef,
2474 enum ieee80211_chanctx_mode mode,
2475 bool radar_required);
2476 int __must_check
2477 ieee80211_link_use_reserved_context(struct ieee80211_link_data *link);
2478 int ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link);
2479
2480 int __must_check
2481 ieee80211_link_change_bandwidth(struct ieee80211_link_data *link,
2482 const struct cfg80211_chan_def *chandef,
2483 u64 *changed);
2484 void ieee80211_link_release_channel(struct ieee80211_link_data *link);
2485 void ieee80211_link_vlan_copy_chanctx(struct ieee80211_link_data *link);
2486 void ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link,
2487 bool clear);
2488 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2489 struct ieee80211_chanctx *ctx);
2490
2491 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2492 struct ieee80211_chanctx *chanctx);
2493 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2494 struct ieee80211_chanctx *ctx);
2495 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2496
2497 void ieee80211_dfs_cac_timer(unsigned long data);
2498 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2499 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2500 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2501 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2502 struct cfg80211_csa_settings *csa_settings);
2503
2504 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2505 struct ieee80211_sub_if_data *sdata);
2506 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2507 const struct cfg80211_chan_def *chandef,
2508 enum ieee80211_chanctx_mode chanmode,
2509 u8 radar_detect);
2510 int ieee80211_max_num_channels(struct ieee80211_local *local);
2511 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2512 struct ieee80211_chanctx *ctx);
2513
2514 /* TDLS */
2515 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2516 const u8 *peer, u8 action_code, u8 dialog_token,
2517 u16 status_code, u32 peer_capability,
2518 bool initiator, const u8 *extra_ies,
2519 size_t extra_ies_len);
2520 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2521 const u8 *peer, enum nl80211_tdls_operation oper);
2522 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2523 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2524 const u8 *addr, u8 oper_class,
2525 struct cfg80211_chan_def *chandef);
2526 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2527 struct net_device *dev,
2528 const u8 *addr);
2529 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2530 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2531 const u8 *peer, u16 reason);
2532 void
2533 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata,
2534 struct sk_buff *skb);
2535
2536
2537 const char *ieee80211_get_reason_code_string(u16 reason_code);
2538 u16 ieee80211_encode_usf(int val);
2539 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
2540 enum nl80211_iftype type);
2541
2542 extern const struct ethtool_ops ieee80211_ethtool_ops;
2543
2544 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw,
2545 struct ieee80211_vif *vif,
2546 struct ieee80211_sta *pubsta,
2547 int len, bool ampdu);
2548 #ifdef CONFIG_MAC80211_NOINLINE
2549 #define debug_noinline noinline
2550 #else
2551 #define debug_noinline
2552 #endif
2553
2554 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache);
2555 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache);
2556
2557 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2558 u8 *ieee80211_ie_build_eht_cap(u8 *pos,
2559 const struct ieee80211_sta_he_cap *he_cap,
2560 const struct ieee80211_sta_eht_cap *eht_cap,
2561 u8 *end,
2562 bool for_ap);
2563
2564 void
2565 ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata,
2566 struct ieee80211_supported_band *sband,
2567 const u8 *he_cap_ie, u8 he_cap_len,
2568 const struct ieee80211_eht_cap_elem *eht_cap_ie_elem,
2569 u8 eht_cap_len,
2570 struct link_sta_info *link_sta);
2571 #endif /* IEEE80211_I_H */
2572