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) 2018-2021 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 struct ieee80211_bss {
87 u32 device_ts_beacon, device_ts_presp;
88
89 bool wmm_used;
90 bool uapsd_supported;
91
92 #define IEEE80211_MAX_SUPP_RATES 32
93 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
94 size_t supp_rates_len;
95 struct ieee80211_rate *beacon_rate;
96
97 u32 vht_cap_info;
98
99 /*
100 * During association, we save an ERP value from a probe response so
101 * that we can feed ERP info to the driver when handling the
102 * association completes. these fields probably won't be up-to-date
103 * otherwise, you probably don't want to use them.
104 */
105 bool has_erp_value;
106 u8 erp_value;
107
108 /* Keep track of the corruption of the last beacon/probe response. */
109 u8 corrupt_data;
110
111 /* Keep track of what bits of information we have valid info for. */
112 u8 valid_data;
113 };
114
115 /**
116 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
117 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
118 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
119 *
120 * These are bss flags that are attached to a bss in the
121 * @corrupt_data field of &struct ieee80211_bss.
122 */
123 enum ieee80211_bss_corrupt_data_flags {
124 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
125 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
126 };
127
128 /**
129 * enum ieee80211_valid_data_flags - BSS valid data flags
130 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
131 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
132 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
133 *
134 * These are bss flags that are attached to a bss in the
135 * @valid_data field of &struct ieee80211_bss. They show which parts
136 * of the data structure were received as a result of an un-corrupted
137 * beacon/probe response.
138 */
139 enum ieee80211_bss_valid_data_flags {
140 IEEE80211_BSS_VALID_WMM = BIT(1),
141 IEEE80211_BSS_VALID_RATES = BIT(2),
142 IEEE80211_BSS_VALID_ERP = BIT(3)
143 };
144
145 typedef unsigned __bitwise ieee80211_tx_result;
146 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
147 #define TX_DROP ((__force ieee80211_tx_result) 1u)
148 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
149
150 #define IEEE80211_TX_UNICAST BIT(1)
151 #define IEEE80211_TX_PS_BUFFERED BIT(2)
152
153 struct ieee80211_tx_data {
154 struct sk_buff *skb;
155 struct sk_buff_head skbs;
156 struct ieee80211_local *local;
157 struct ieee80211_sub_if_data *sdata;
158 struct sta_info *sta;
159 struct ieee80211_key *key;
160 struct ieee80211_tx_rate rate;
161
162 unsigned int flags;
163 };
164
165
166 typedef unsigned __bitwise ieee80211_rx_result;
167 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
168 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
169 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
170 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
171
172 /**
173 * enum ieee80211_packet_rx_flags - packet RX flags
174 * @IEEE80211_RX_AMSDU: a-MSDU packet
175 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
176 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
177 *
178 * These are per-frame flags that are attached to a frame in the
179 * @rx_flags field of &struct ieee80211_rx_status.
180 */
181 enum ieee80211_packet_rx_flags {
182 IEEE80211_RX_AMSDU = BIT(3),
183 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
184 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
185 };
186
187 /**
188 * enum ieee80211_rx_flags - RX data flags
189 *
190 * @IEEE80211_RX_CMNTR: received on cooked monitor already
191 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
192 * to cfg80211_report_obss_beacon().
193 *
194 * These flags are used across handling multiple interfaces
195 * for a single frame.
196 */
197 enum ieee80211_rx_flags {
198 IEEE80211_RX_CMNTR = BIT(0),
199 IEEE80211_RX_BEACON_REPORTED = BIT(1),
200 };
201
202 struct ieee80211_rx_data {
203 struct list_head *list;
204 struct sk_buff *skb;
205 struct ieee80211_local *local;
206 struct ieee80211_sub_if_data *sdata;
207 struct sta_info *sta;
208 struct ieee80211_key *key;
209
210 unsigned int flags;
211
212 /*
213 * Index into sequence numbers array, 0..16
214 * since the last (16) is used for non-QoS,
215 * will be 16 on non-QoS frames.
216 */
217 int seqno_idx;
218
219 /*
220 * Index into the security IV/PN arrays, 0..16
221 * since the last (16) is used for CCMP-encrypted
222 * management frames, will be set to 16 on mgmt
223 * frames and 0 on non-QoS frames.
224 */
225 int security_idx;
226
227 union {
228 struct {
229 u32 iv32;
230 u16 iv16;
231 } tkip;
232 struct {
233 u8 pn[IEEE80211_CCMP_PN_LEN];
234 } ccm_gcm;
235 };
236 };
237
238 struct ieee80211_csa_settings {
239 const u16 *counter_offsets_beacon;
240 const u16 *counter_offsets_presp;
241
242 int n_counter_offsets_beacon;
243 int n_counter_offsets_presp;
244
245 u8 count;
246 };
247
248 struct ieee80211_color_change_settings {
249 u16 counter_offset_beacon;
250 u16 counter_offset_presp;
251 u8 count;
252 };
253
254 struct beacon_data {
255 u8 *head, *tail;
256 int head_len, tail_len;
257 struct ieee80211_meshconf_ie *meshconf;
258 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
259 u8 cntdwn_current_counter;
260 struct rcu_head rcu_head;
261 };
262
263 struct probe_resp {
264 struct rcu_head rcu_head;
265 int len;
266 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
267 u8 data[];
268 };
269
270 struct fils_discovery_data {
271 struct rcu_head rcu_head;
272 int len;
273 u8 data[];
274 };
275
276 struct unsol_bcast_probe_resp_data {
277 struct rcu_head rcu_head;
278 int len;
279 u8 data[];
280 };
281
282 struct ps_data {
283 /* yes, this looks ugly, but guarantees that we can later use
284 * bitmap_empty :)
285 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
286 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
287 __aligned(__alignof__(unsigned long));
288 struct sk_buff_head bc_buf;
289 atomic_t num_sta_ps; /* number of stations in PS mode */
290 int dtim_count;
291 bool dtim_bc_mc;
292 };
293
294 struct ieee80211_if_ap {
295 struct beacon_data __rcu *beacon;
296 struct probe_resp __rcu *probe_resp;
297 struct fils_discovery_data __rcu *fils_discovery;
298 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp;
299
300 /* to be used after channel switch. */
301 struct cfg80211_beacon_data *next_beacon;
302 struct list_head vlans; /* write-protected with RTNL and local->mtx */
303
304 struct ps_data ps;
305 atomic_t num_mcast_sta; /* number of stations receiving multicast */
306
307 bool multicast_to_unicast;
308 };
309
310 struct ieee80211_if_vlan {
311 struct list_head list; /* write-protected with RTNL and local->mtx */
312
313 /* used for all tx if the VLAN is configured to 4-addr mode */
314 struct sta_info __rcu *sta;
315 atomic_t num_mcast_sta; /* number of stations receiving multicast */
316 };
317
318 struct mesh_stats {
319 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
320 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
321 __u32 fwded_frames; /* Mesh total forwarded frames */
322 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
323 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
324 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
325 };
326
327 #define PREQ_Q_F_START 0x1
328 #define PREQ_Q_F_REFRESH 0x2
329 struct mesh_preq_queue {
330 struct list_head list;
331 u8 dst[ETH_ALEN];
332 u8 flags;
333 };
334
335 struct ieee80211_roc_work {
336 struct list_head list;
337
338 struct ieee80211_sub_if_data *sdata;
339
340 struct ieee80211_channel *chan;
341
342 bool started, abort, hw_begun, notified;
343 bool on_channel;
344
345 unsigned long start_time;
346
347 u32 duration, req_duration;
348 struct sk_buff *frame;
349 u64 cookie, mgmt_tx_cookie;
350 enum ieee80211_roc_type type;
351 };
352
353 /* flags used in struct ieee80211_if_managed.flags */
354 enum ieee80211_sta_flags {
355 IEEE80211_STA_CONNECTION_POLL = BIT(1),
356 IEEE80211_STA_CONTROL_PORT = BIT(2),
357 IEEE80211_STA_DISABLE_HT = BIT(4),
358 IEEE80211_STA_MFP_ENABLED = BIT(6),
359 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
360 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
361 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
362 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
363 IEEE80211_STA_DISABLE_VHT = BIT(11),
364 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
365 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
366 IEEE80211_STA_DISABLE_WMM = BIT(14),
367 IEEE80211_STA_ENABLE_RRM = BIT(15),
368 IEEE80211_STA_DISABLE_HE = BIT(16),
369 };
370
371 struct ieee80211_mgd_auth_data {
372 struct cfg80211_bss *bss;
373 unsigned long timeout;
374 int tries;
375 u16 algorithm, expected_transaction;
376
377 u8 key[WLAN_KEY_LEN_WEP104];
378 u8 key_len, key_idx;
379 bool done;
380 bool peer_confirmed;
381 bool timeout_started;
382
383 u16 sae_trans, sae_status;
384 size_t data_len;
385 u8 data[];
386 };
387
388 struct ieee80211_mgd_assoc_data {
389 struct cfg80211_bss *bss;
390 const u8 *supp_rates;
391
392 unsigned long timeout;
393 int tries;
394
395 u16 capability;
396 u8 prev_bssid[ETH_ALEN];
397 u8 ssid[IEEE80211_MAX_SSID_LEN];
398 u8 ssid_len;
399 u8 supp_rates_len;
400 bool wmm, uapsd;
401 bool need_beacon;
402 bool synced;
403 bool timeout_started;
404
405 u8 ap_ht_param;
406
407 struct ieee80211_vht_cap ap_vht_cap;
408
409 u8 fils_nonces[2 * FILS_NONCE_LEN];
410 u8 fils_kek[FILS_MAX_KEK_LEN];
411 size_t fils_kek_len;
412
413 size_t ie_len;
414 u8 ie[];
415 };
416
417 struct ieee80211_sta_tx_tspec {
418 /* timestamp of the first packet in the time slice */
419 unsigned long time_slice_start;
420
421 u32 admitted_time; /* in usecs, unlike over the air */
422 u8 tsid;
423 s8 up; /* signed to be able to invalidate with -1 during teardown */
424
425 /* consumed TX time in microseconds in the time slice */
426 u32 consumed_tx_time;
427 enum {
428 TX_TSPEC_ACTION_NONE = 0,
429 TX_TSPEC_ACTION_DOWNGRADE,
430 TX_TSPEC_ACTION_STOP_DOWNGRADE,
431 } action;
432 bool downgraded;
433 };
434
435 DECLARE_EWMA(beacon_signal, 4, 4)
436
437 struct ieee80211_if_managed {
438 struct timer_list timer;
439 struct timer_list conn_mon_timer;
440 struct timer_list bcn_mon_timer;
441 struct timer_list chswitch_timer;
442 struct work_struct monitor_work;
443 struct work_struct chswitch_work;
444 struct work_struct beacon_connection_loss_work;
445 struct work_struct csa_connection_drop_work;
446
447 unsigned long beacon_timeout;
448 unsigned long probe_timeout;
449 int probe_send_count;
450 bool nullfunc_failed;
451 u8 connection_loss:1,
452 driver_disconnect:1,
453 reconnect:1;
454
455 struct cfg80211_bss *associated;
456 struct ieee80211_mgd_auth_data *auth_data;
457 struct ieee80211_mgd_assoc_data *assoc_data;
458
459 u8 bssid[ETH_ALEN] __aligned(2);
460
461 bool powersave; /* powersave requested for this iface */
462 bool broken_ap; /* AP is broken -- turn off powersave */
463 bool have_beacon;
464 u8 dtim_period;
465 enum ieee80211_smps_mode req_smps, /* requested smps mode */
466 driver_smps_mode; /* smps mode request */
467
468 struct work_struct request_smps_work;
469
470 unsigned int flags;
471
472 bool csa_waiting_bcn;
473 bool csa_ignored_same_chan;
474
475 bool beacon_crc_valid;
476 u32 beacon_crc;
477
478 bool status_acked;
479 bool status_received;
480 __le16 status_fc;
481
482 enum {
483 IEEE80211_MFP_DISABLED,
484 IEEE80211_MFP_OPTIONAL,
485 IEEE80211_MFP_REQUIRED
486 } mfp; /* management frame protection */
487
488 /*
489 * Bitmask of enabled u-apsd queues,
490 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
491 * to take effect.
492 */
493 unsigned int uapsd_queues;
494
495 /*
496 * Maximum number of buffered frames AP can deliver during a
497 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
498 * Needs a new association to take effect.
499 */
500 unsigned int uapsd_max_sp_len;
501
502 int wmm_last_param_set;
503 int mu_edca_last_param_set;
504
505 u8 use_4addr;
506
507 s16 p2p_noa_index;
508
509 struct ewma_beacon_signal ave_beacon_signal;
510
511 /*
512 * Number of Beacon frames used in ave_beacon_signal. This can be used
513 * to avoid generating less reliable cqm events that would be based
514 * only on couple of received frames.
515 */
516 unsigned int count_beacon_signal;
517
518 /* Number of times beacon loss was invoked. */
519 unsigned int beacon_loss_count;
520
521 /*
522 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
523 * that triggered a cqm event. 0 indicates that no event has been
524 * generated for the current association.
525 */
526 int last_cqm_event_signal;
527
528 /*
529 * State variables for keeping track of RSSI of the AP currently
530 * connected to and informing driver when RSSI has gone
531 * below/above a certain threshold.
532 */
533 int rssi_min_thold, rssi_max_thold;
534 int last_ave_beacon_signal;
535
536 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
537 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
538 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
539 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
540 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */
541 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */
542
543 /* TDLS support */
544 u8 tdls_peer[ETH_ALEN] __aligned(2);
545 struct delayed_work tdls_peer_del_work;
546 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
547 struct sk_buff *teardown_skb; /* A copy to send through the AP */
548 spinlock_t teardown_lock; /* To lock changing teardown_skb */
549 bool tdls_chan_switch_prohibited;
550 bool tdls_wider_bw_prohibited;
551
552 /* WMM-AC TSPEC support */
553 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
554 /* Use a separate work struct so that we can do something here
555 * while the sdata->work is flushing the queues, for example.
556 * otherwise, in scenarios where we hardly get any traffic out
557 * on the BE queue, but there's a lot of VO traffic, we might
558 * get stuck in a downgraded situation and flush takes forever.
559 */
560 struct delayed_work tx_tspec_wk;
561
562 /* Information elements from the last transmitted (Re)Association
563 * Request frame.
564 */
565 u8 *assoc_req_ies;
566 size_t assoc_req_ies_len;
567 };
568
569 struct ieee80211_if_ibss {
570 struct timer_list timer;
571 struct work_struct csa_connection_drop_work;
572
573 unsigned long last_scan_completed;
574
575 u32 basic_rates;
576
577 bool fixed_bssid;
578 bool fixed_channel;
579 bool privacy;
580
581 bool control_port;
582 bool userspace_handles_dfs;
583
584 u8 bssid[ETH_ALEN] __aligned(2);
585 u8 ssid[IEEE80211_MAX_SSID_LEN];
586 u8 ssid_len, ie_len;
587 u8 *ie;
588 struct cfg80211_chan_def chandef;
589
590 unsigned long ibss_join_req;
591 /* probe response/beacon for IBSS */
592 struct beacon_data __rcu *presp;
593
594 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
595 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
596
597 spinlock_t incomplete_lock;
598 struct list_head incomplete_stations;
599
600 enum {
601 IEEE80211_IBSS_MLME_SEARCH,
602 IEEE80211_IBSS_MLME_JOINED,
603 } state;
604 };
605
606 /**
607 * struct ieee80211_if_ocb - OCB mode state
608 *
609 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
610 * @wrkq_flags: OCB deferred task action
611 * @incomplete_lock: delayed STA insertion lock
612 * @incomplete_stations: list of STAs waiting for delayed insertion
613 * @joined: indication if the interface is connected to an OCB network
614 */
615 struct ieee80211_if_ocb {
616 struct timer_list housekeeping_timer;
617 unsigned long wrkq_flags;
618
619 spinlock_t incomplete_lock;
620 struct list_head incomplete_stations;
621
622 bool joined;
623 };
624
625 /**
626 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
627 *
628 * these declarations define the interface, which enables
629 * vendor-specific mesh synchronization
630 *
631 */
632 struct ieee802_11_elems;
633 struct ieee80211_mesh_sync_ops {
634 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
635 u16 stype,
636 struct ieee80211_mgmt *mgmt,
637 struct ieee802_11_elems *elems,
638 struct ieee80211_rx_status *rx_status);
639
640 /* should be called with beacon_data under RCU read lock */
641 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
642 struct beacon_data *beacon);
643 /* add other framework functions here */
644 };
645
646 struct mesh_csa_settings {
647 struct rcu_head rcu_head;
648 struct cfg80211_csa_settings settings;
649 };
650
651 struct ieee80211_if_mesh {
652 struct timer_list housekeeping_timer;
653 struct timer_list mesh_path_timer;
654 struct timer_list mesh_path_root_timer;
655
656 unsigned long wrkq_flags;
657 unsigned long mbss_changed;
658
659 bool userspace_handles_dfs;
660
661 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
662 size_t mesh_id_len;
663 /* Active Path Selection Protocol Identifier */
664 u8 mesh_pp_id;
665 /* Active Path Selection Metric Identifier */
666 u8 mesh_pm_id;
667 /* Congestion Control Mode Identifier */
668 u8 mesh_cc_id;
669 /* Synchronization Protocol Identifier */
670 u8 mesh_sp_id;
671 /* Authentication Protocol Identifier */
672 u8 mesh_auth_id;
673 /* Local mesh Sequence Number */
674 u32 sn;
675 /* Last used PREQ ID */
676 u32 preq_id;
677 atomic_t mpaths;
678 /* Timestamp of last SN update */
679 unsigned long last_sn_update;
680 /* Time when it's ok to send next PERR */
681 unsigned long next_perr;
682 /* Timestamp of last PREQ sent */
683 unsigned long last_preq;
684 struct mesh_rmc *rmc;
685 spinlock_t mesh_preq_queue_lock;
686 struct mesh_preq_queue preq_queue;
687 int preq_queue_len;
688 struct mesh_stats mshstats;
689 struct mesh_config mshcfg;
690 atomic_t estab_plinks;
691 u32 mesh_seqnum;
692 bool accepting_plinks;
693 int num_gates;
694 struct beacon_data __rcu *beacon;
695 const u8 *ie;
696 u8 ie_len;
697 enum {
698 IEEE80211_MESH_SEC_NONE = 0x0,
699 IEEE80211_MESH_SEC_AUTHED = 0x1,
700 IEEE80211_MESH_SEC_SECURED = 0x2,
701 } security;
702 bool user_mpm;
703 /* Extensible Synchronization Framework */
704 const struct ieee80211_mesh_sync_ops *sync_ops;
705 s64 sync_offset_clockdrift_max;
706 spinlock_t sync_offset_lock;
707 /* mesh power save */
708 enum nl80211_mesh_power_mode nonpeer_pm;
709 int ps_peers_light_sleep;
710 int ps_peers_deep_sleep;
711 struct ps_data ps;
712 /* Channel Switching Support */
713 struct mesh_csa_settings __rcu *csa;
714 enum {
715 IEEE80211_MESH_CSA_ROLE_NONE,
716 IEEE80211_MESH_CSA_ROLE_INIT,
717 IEEE80211_MESH_CSA_ROLE_REPEATER,
718 } csa_role;
719 u8 chsw_ttl;
720 u16 pre_value;
721
722 /* offset from skb->data while building IE */
723 int meshconf_offset;
724
725 struct mesh_table *mesh_paths;
726 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */
727 int mesh_paths_generation;
728 int mpp_paths_generation;
729 };
730
731 #ifdef CONFIG_MAC80211_MESH
732 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
733 do { (msh)->mshstats.name++; } while (0)
734 #else
735 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
736 do { } while (0)
737 #endif
738
739 /**
740 * enum ieee80211_sub_if_data_flags - virtual interface flags
741 *
742 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
743 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
744 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
745 * associated stations and deliver multicast frames both
746 * back to wireless media and to the local net stack.
747 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
748 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
749 */
750 enum ieee80211_sub_if_data_flags {
751 IEEE80211_SDATA_ALLMULTI = BIT(0),
752 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
753 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
754 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
755 IEEE80211_SDATA_IN_DRIVER = BIT(5),
756 };
757
758 /**
759 * enum ieee80211_sdata_state_bits - virtual interface state bits
760 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
761 * mirrors netif_running() but is separate for interface type
762 * change handling while the interface is up
763 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
764 * mode, so queues are stopped
765 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
766 * to offchannel, reset when offchannel returns
767 */
768 enum ieee80211_sdata_state_bits {
769 SDATA_STATE_RUNNING,
770 SDATA_STATE_OFFCHANNEL,
771 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
772 };
773
774 /**
775 * enum ieee80211_chanctx_mode - channel context configuration mode
776 *
777 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
778 * multiple interfaces
779 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
780 * only by a single interface. This can be used for example for
781 * non-fixed channel IBSS.
782 */
783 enum ieee80211_chanctx_mode {
784 IEEE80211_CHANCTX_SHARED,
785 IEEE80211_CHANCTX_EXCLUSIVE
786 };
787
788 /**
789 * enum ieee80211_chanctx_replace_state - channel context replacement state
790 *
791 * This is used for channel context in-place reservations that require channel
792 * context switch/swap.
793 *
794 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
795 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
796 * by a (not yet registered) channel context pointed by %replace_ctx.
797 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
798 * replaces an existing channel context pointed to by %replace_ctx.
799 */
800 enum ieee80211_chanctx_replace_state {
801 IEEE80211_CHANCTX_REPLACE_NONE,
802 IEEE80211_CHANCTX_WILL_BE_REPLACED,
803 IEEE80211_CHANCTX_REPLACES_OTHER,
804 };
805
806 struct ieee80211_chanctx {
807 struct list_head list;
808 struct rcu_head rcu_head;
809
810 struct list_head assigned_vifs;
811 struct list_head reserved_vifs;
812
813 enum ieee80211_chanctx_replace_state replace_state;
814 struct ieee80211_chanctx *replace_ctx;
815
816 enum ieee80211_chanctx_mode mode;
817 bool driver_present;
818
819 struct ieee80211_chanctx_conf conf;
820 };
821
822 struct mac80211_qos_map {
823 struct cfg80211_qos_map qos_map;
824 struct rcu_head rcu_head;
825 };
826
827 enum txq_info_flags {
828 IEEE80211_TXQ_STOP,
829 IEEE80211_TXQ_AMPDU,
830 IEEE80211_TXQ_NO_AMSDU,
831 IEEE80211_TXQ_STOP_NETIF_TX,
832 };
833
834 /**
835 * struct txq_info - per tid queue
836 *
837 * @tin: contains packets split into multiple flows
838 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
839 * a fq_flow which is already owned by a different tin
840 * @def_cvars: codel vars for @def_flow
841 * @schedule_order: used with ieee80211_local->active_txqs
842 * @frags: used to keep fragments created after dequeue
843 */
844 struct txq_info {
845 struct fq_tin tin;
846 struct codel_vars def_cvars;
847 struct codel_stats cstats;
848 struct rb_node schedule_order;
849
850 struct sk_buff_head frags;
851 unsigned long flags;
852
853 /* keep last! */
854 struct ieee80211_txq txq;
855 };
856
857 struct ieee80211_if_mntr {
858 u32 flags;
859 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
860
861 struct list_head list;
862 };
863
864 /**
865 * struct ieee80211_if_nan - NAN state
866 *
867 * @conf: current NAN configuration
868 * @func_ids: a bitmap of available instance_id's
869 */
870 struct ieee80211_if_nan {
871 struct cfg80211_nan_conf conf;
872
873 /* protects function_inst_ids */
874 spinlock_t func_lock;
875 struct idr function_inst_ids;
876 };
877
878 struct ieee80211_sub_if_data {
879 struct list_head list;
880
881 struct wireless_dev wdev;
882
883 /* keys */
884 struct list_head key_list;
885
886 /* count for keys needing tailroom space allocation */
887 int crypto_tx_tailroom_needed_cnt;
888 int crypto_tx_tailroom_pending_dec;
889 struct delayed_work dec_tailroom_needed_wk;
890
891 struct net_device *dev;
892 struct ieee80211_local *local;
893
894 unsigned int flags;
895
896 unsigned long state;
897
898 char name[IFNAMSIZ];
899
900 struct ieee80211_fragment_cache frags;
901
902 /* TID bitmap for NoAck policy */
903 u16 noack_map;
904
905 /* bit field of ACM bits (BIT(802.1D tag)) */
906 u8 wmm_acm;
907
908 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS +
909 NUM_DEFAULT_MGMT_KEYS +
910 NUM_DEFAULT_BEACON_KEYS];
911 struct ieee80211_key __rcu *default_unicast_key;
912 struct ieee80211_key __rcu *default_multicast_key;
913 struct ieee80211_key __rcu *default_mgmt_key;
914 struct ieee80211_key __rcu *default_beacon_key;
915
916 u16 sequence_number;
917 __be16 control_port_protocol;
918 bool control_port_no_encrypt;
919 bool control_port_no_preauth;
920 bool control_port_over_nl80211;
921 int encrypt_headroom;
922
923 atomic_t num_tx_queued;
924 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
925 struct mac80211_qos_map __rcu *qos_map;
926
927 struct airtime_info airtime[IEEE80211_NUM_ACS];
928
929 struct work_struct csa_finalize_work;
930 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
931 struct cfg80211_chan_def csa_chandef;
932
933 struct work_struct color_change_finalize_work;
934
935 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
936 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
937
938 /* context reservation -- protected with chanctx_mtx */
939 struct ieee80211_chanctx *reserved_chanctx;
940 struct cfg80211_chan_def reserved_chandef;
941 bool reserved_radar_required;
942 bool reserved_ready;
943
944 /* used to reconfigure hardware SM PS */
945 struct work_struct recalc_smps;
946
947 struct work_struct work;
948 struct sk_buff_head skb_queue;
949 struct sk_buff_head status_queue;
950
951 u8 needed_rx_chains;
952 enum ieee80211_smps_mode smps_mode;
953
954 int user_power_level; /* in dBm */
955 int ap_power_level; /* in dBm */
956
957 bool radar_required;
958 struct delayed_work dfs_cac_timer_work;
959
960 /*
961 * AP this belongs to: self in AP mode and
962 * corresponding AP in VLAN mode, NULL for
963 * all others (might be needed later in IBSS)
964 */
965 struct ieee80211_if_ap *bss;
966
967 /* bitmap of allowed (non-MCS) rate indexes for rate control */
968 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
969
970 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
971 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
972
973 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
974 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
975
976 /* Beacon frame (non-MCS) rate (as a bitmap) */
977 u32 beacon_rateidx_mask[NUM_NL80211_BANDS];
978 bool beacon_rate_set;
979
980 union {
981 struct ieee80211_if_ap ap;
982 struct ieee80211_if_vlan vlan;
983 struct ieee80211_if_managed mgd;
984 struct ieee80211_if_ibss ibss;
985 struct ieee80211_if_mesh mesh;
986 struct ieee80211_if_ocb ocb;
987 struct ieee80211_if_mntr mntr;
988 struct ieee80211_if_nan nan;
989 } u;
990
991 #ifdef CONFIG_MAC80211_DEBUGFS
992 struct {
993 struct dentry *subdir_stations;
994 struct dentry *default_unicast_key;
995 struct dentry *default_multicast_key;
996 struct dentry *default_mgmt_key;
997 struct dentry *default_beacon_key;
998 } debugfs;
999 #endif
1000
1001 /* must be last, dynamically sized area in this! */
1002 struct ieee80211_vif vif;
1003 };
1004
1005 static inline
vif_to_sdata(struct ieee80211_vif * p)1006 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
1007 {
1008 return container_of(p, struct ieee80211_sub_if_data, vif);
1009 }
1010
sdata_lock(struct ieee80211_sub_if_data * sdata)1011 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
1012 __acquires(&sdata->wdev.mtx)
1013 {
1014 mutex_lock(&sdata->wdev.mtx);
1015 __acquire(&sdata->wdev.mtx);
1016 }
1017
sdata_unlock(struct ieee80211_sub_if_data * sdata)1018 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
1019 __releases(&sdata->wdev.mtx)
1020 {
1021 mutex_unlock(&sdata->wdev.mtx);
1022 __release(&sdata->wdev.mtx);
1023 }
1024
1025 #define sdata_dereference(p, sdata) \
1026 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
1027
1028 static inline void
sdata_assert_lock(struct ieee80211_sub_if_data * sdata)1029 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
1030 {
1031 lockdep_assert_held(&sdata->wdev.mtx);
1032 }
1033
1034 static inline int
ieee80211_chandef_get_shift(struct cfg80211_chan_def * chandef)1035 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1036 {
1037 switch (chandef->width) {
1038 case NL80211_CHAN_WIDTH_5:
1039 return 2;
1040 case NL80211_CHAN_WIDTH_10:
1041 return 1;
1042 default:
1043 return 0;
1044 }
1045 }
1046
1047 static inline int
ieee80211_vif_get_shift(struct ieee80211_vif * vif)1048 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1049 {
1050 struct ieee80211_chanctx_conf *chanctx_conf;
1051 int shift = 0;
1052
1053 rcu_read_lock();
1054 chanctx_conf = rcu_dereference(vif->chanctx_conf);
1055 if (chanctx_conf)
1056 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1057 rcu_read_unlock();
1058
1059 return shift;
1060 }
1061
1062 enum {
1063 IEEE80211_RX_MSG = 1,
1064 IEEE80211_TX_STATUS_MSG = 2,
1065 };
1066
1067 enum queue_stop_reason {
1068 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1069 IEEE80211_QUEUE_STOP_REASON_PS,
1070 IEEE80211_QUEUE_STOP_REASON_CSA,
1071 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1072 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1073 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1074 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1075 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1076 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1077 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1078 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE,
1079
1080 IEEE80211_QUEUE_STOP_REASONS,
1081 };
1082
1083 #ifdef CONFIG_MAC80211_LEDS
1084 struct tpt_led_trigger {
1085 char name[32];
1086 const struct ieee80211_tpt_blink *blink_table;
1087 unsigned int blink_table_len;
1088 struct timer_list timer;
1089 struct ieee80211_local *local;
1090 unsigned long prev_traffic;
1091 unsigned long tx_bytes, rx_bytes;
1092 unsigned int active, want;
1093 bool running;
1094 };
1095 #endif
1096
1097 /**
1098 * mac80211 scan flags - currently active scan mode
1099 *
1100 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1101 * well be on the operating channel
1102 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1103 * determine if we are on the operating channel or not
1104 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1105 * channel. This should not interrupt normal traffic.
1106 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1107 * that the scan completed.
1108 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1109 * a scan complete for an aborted scan.
1110 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1111 * cancelled.
1112 */
1113 enum {
1114 SCAN_SW_SCANNING,
1115 SCAN_HW_SCANNING,
1116 SCAN_ONCHANNEL_SCANNING,
1117 SCAN_COMPLETED,
1118 SCAN_ABORTED,
1119 SCAN_HW_CANCELLED,
1120 };
1121
1122 /**
1123 * enum mac80211_scan_state - scan state machine states
1124 *
1125 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1126 * determines if we should keep on scanning or switch back to the
1127 * operating channel
1128 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1129 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1130 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1131 * send out data
1132 * @SCAN_RESUME: Resume the scan and scan the next channel
1133 * @SCAN_ABORT: Abort the scan and go back to operating channel
1134 */
1135 enum mac80211_scan_state {
1136 SCAN_DECISION,
1137 SCAN_SET_CHANNEL,
1138 SCAN_SEND_PROBE,
1139 SCAN_SUSPEND,
1140 SCAN_RESUME,
1141 SCAN_ABORT,
1142 };
1143
1144 /**
1145 * struct airtime_sched_info - state used for airtime scheduling and AQL
1146 *
1147 * @lock: spinlock that protects all the fields in this struct
1148 * @active_txqs: rbtree of currently backlogged queues, sorted by virtual time
1149 * @schedule_pos: the current position maintained while a driver walks the tree
1150 * with ieee80211_next_txq()
1151 * @active_list: list of struct airtime_info structs that were active within
1152 * the last AIRTIME_ACTIVE_DURATION (100 ms), used to compute
1153 * weight_sum
1154 * @last_weight_update: used for rate limiting walking active_list
1155 * @last_schedule_time: tracks the last time a transmission was scheduled; used
1156 * for catching up v_t if no stations are eligible for
1157 * transmission.
1158 * @v_t: global virtual time; queues with v_t < this are eligible for
1159 * transmission
1160 * @weight_sum: total sum of all active stations used for dividing airtime
1161 * @weight_sum_reciprocal: reciprocal of weight_sum (to avoid divisions in fast
1162 * path - see comment above
1163 * IEEE80211_RECIPROCAL_DIVISOR_64)
1164 * @aql_txq_limit_low: AQL limit when total outstanding airtime
1165 * is < IEEE80211_AQL_THRESHOLD
1166 * @aql_txq_limit_high: AQL limit when total outstanding airtime
1167 * is > IEEE80211_AQL_THRESHOLD
1168 */
1169 struct airtime_sched_info {
1170 spinlock_t lock;
1171 struct rb_root_cached active_txqs;
1172 struct rb_node *schedule_pos;
1173 struct list_head active_list;
1174 u64 last_weight_update;
1175 u64 last_schedule_activity;
1176 u64 v_t;
1177 u64 weight_sum;
1178 u64 weight_sum_reciprocal;
1179 u32 aql_txq_limit_low;
1180 u32 aql_txq_limit_high;
1181 };
1182 DECLARE_STATIC_KEY_FALSE(aql_disable);
1183
1184 struct ieee80211_local {
1185 /* embed the driver visible part.
1186 * don't cast (use the static inlines below), but we keep
1187 * it first anyway so they become a no-op */
1188 struct ieee80211_hw hw;
1189
1190 struct fq fq;
1191 struct codel_vars *cvars;
1192 struct codel_params cparams;
1193
1194 /* protects active_txqs and txqi->schedule_order */
1195 struct airtime_sched_info airtime[IEEE80211_NUM_ACS];
1196 u16 airtime_flags;
1197 u32 aql_threshold;
1198 atomic_t aql_total_pending_airtime;
1199
1200 const struct ieee80211_ops *ops;
1201
1202 /*
1203 * private workqueue to mac80211. mac80211 makes this accessible
1204 * via ieee80211_queue_work()
1205 */
1206 struct workqueue_struct *workqueue;
1207
1208 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1209 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1210 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1211 spinlock_t queue_stop_reason_lock;
1212
1213 int open_count;
1214 int monitors, cooked_mntrs;
1215 /* number of interfaces with corresponding FIF_ flags */
1216 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1217 fif_probe_req;
1218 bool probe_req_reg;
1219 bool rx_mcast_action_reg;
1220 unsigned int filter_flags; /* FIF_* */
1221
1222 bool wiphy_ciphers_allocated;
1223
1224 bool use_chanctx;
1225
1226 /* protects the aggregated multicast list and filter calls */
1227 spinlock_t filter_lock;
1228
1229 /* used for uploading changed mc list */
1230 struct work_struct reconfig_filter;
1231
1232 /* aggregated multicast list */
1233 struct netdev_hw_addr_list mc_list;
1234
1235 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1236
1237 /*
1238 * suspended is true if we finished all the suspend _and_ we have
1239 * not yet come up from resume. This is to be used by mac80211
1240 * to ensure driver sanity during suspend and mac80211's own
1241 * sanity. It can eventually be used for WoW as well.
1242 */
1243 bool suspended;
1244
1245 /*
1246 * Resuming is true while suspended, but when we're reprogramming the
1247 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1248 * again even though some other parts of the stack are still suspended
1249 * and we still drop received frames to avoid waking the stack.
1250 */
1251 bool resuming;
1252
1253 /*
1254 * quiescing is true during the suspend process _only_ to
1255 * ease timer cancelling etc.
1256 */
1257 bool quiescing;
1258
1259 /* device is started */
1260 bool started;
1261
1262 /* device is during a HW reconfig */
1263 bool in_reconfig;
1264
1265 /* wowlan is enabled -- don't reconfig on resume */
1266 bool wowlan;
1267
1268 struct work_struct radar_detected_work;
1269
1270 /* number of RX chains the hardware has */
1271 u8 rx_chains;
1272
1273 /* bitmap of which sbands were copied */
1274 u8 sband_allocated;
1275
1276 int tx_headroom; /* required headroom for hardware/radiotap */
1277
1278 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1279 * added to skb_queue will be processed, but frames in
1280 * skb_queue_unreliable may be dropped if the total length of these
1281 * queues increases over the limit. */
1282 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1283 struct tasklet_struct tasklet;
1284 struct sk_buff_head skb_queue;
1285 struct sk_buff_head skb_queue_unreliable;
1286
1287 spinlock_t rx_path_lock;
1288
1289 /* Station data */
1290 /*
1291 * The mutex only protects the list, hash table and
1292 * counter, reads are done with RCU.
1293 */
1294 struct mutex sta_mtx;
1295 spinlock_t tim_lock;
1296 unsigned long num_sta;
1297 struct list_head sta_list;
1298 struct rhltable sta_hash;
1299 struct timer_list sta_cleanup;
1300 int sta_generation;
1301
1302 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1303 struct tasklet_struct tx_pending_tasklet;
1304 struct tasklet_struct wake_txqs_tasklet;
1305
1306 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1307
1308 /* number of interfaces with allmulti RX */
1309 atomic_t iff_allmultis;
1310
1311 struct rate_control_ref *rate_ctrl;
1312
1313 struct arc4_ctx wep_tx_ctx;
1314 struct arc4_ctx wep_rx_ctx;
1315 u32 wep_iv;
1316
1317 /* see iface.c */
1318 struct list_head interfaces;
1319 struct list_head mon_list; /* only that are IFF_UP && !cooked */
1320 struct mutex iflist_mtx;
1321
1322 /*
1323 * Key mutex, protects sdata's key_list and sta_info's
1324 * key pointers and ptk_idx (write access, they're RCU.)
1325 */
1326 struct mutex key_mtx;
1327
1328 /* mutex for scan and work locking */
1329 struct mutex mtx;
1330
1331 /* Scanning and BSS list */
1332 unsigned long scanning;
1333 struct cfg80211_ssid scan_ssid;
1334 struct cfg80211_scan_request *int_scan_req;
1335 struct cfg80211_scan_request __rcu *scan_req;
1336 struct ieee80211_scan_request *hw_scan_req;
1337 struct cfg80211_chan_def scan_chandef;
1338 enum nl80211_band hw_scan_band;
1339 int scan_channel_idx;
1340 int scan_ies_len;
1341 int hw_scan_ies_bufsize;
1342 struct cfg80211_scan_info scan_info;
1343
1344 struct work_struct sched_scan_stopped_work;
1345 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1346 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1347 u8 scan_addr[ETH_ALEN];
1348
1349 unsigned long leave_oper_channel_time;
1350 enum mac80211_scan_state next_scan_state;
1351 struct delayed_work scan_work;
1352 struct ieee80211_sub_if_data __rcu *scan_sdata;
1353 /* For backward compatibility only -- do not use */
1354 struct cfg80211_chan_def _oper_chandef;
1355
1356 /* Temporary remain-on-channel for off-channel operations */
1357 struct ieee80211_channel *tmp_channel;
1358
1359 /* channel contexts */
1360 struct list_head chanctx_list;
1361 struct mutex chanctx_mtx;
1362
1363 #ifdef CONFIG_MAC80211_LEDS
1364 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1365 struct led_trigger tpt_led;
1366 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1367 atomic_t radio_led_active, tpt_led_active;
1368 struct tpt_led_trigger *tpt_led_trigger;
1369 #endif
1370
1371 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1372 /* SNMP counters */
1373 /* dot11CountersTable */
1374 u32 dot11TransmittedFragmentCount;
1375 u32 dot11MulticastTransmittedFrameCount;
1376 u32 dot11FailedCount;
1377 u32 dot11RetryCount;
1378 u32 dot11MultipleRetryCount;
1379 u32 dot11FrameDuplicateCount;
1380 u32 dot11ReceivedFragmentCount;
1381 u32 dot11MulticastReceivedFrameCount;
1382 u32 dot11TransmittedFrameCount;
1383
1384 /* TX/RX handler statistics */
1385 unsigned int tx_handlers_drop;
1386 unsigned int tx_handlers_queued;
1387 unsigned int tx_handlers_drop_wep;
1388 unsigned int tx_handlers_drop_not_assoc;
1389 unsigned int tx_handlers_drop_unauth_port;
1390 unsigned int rx_handlers_drop;
1391 unsigned int rx_handlers_queued;
1392 unsigned int rx_handlers_drop_nullfunc;
1393 unsigned int rx_handlers_drop_defrag;
1394 unsigned int tx_expand_skb_head;
1395 unsigned int tx_expand_skb_head_cloned;
1396 unsigned int rx_expand_skb_head_defrag;
1397 unsigned int rx_handlers_fragments;
1398 unsigned int tx_status_drop;
1399 #define I802_DEBUG_INC(c) (c)++
1400 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1401 #define I802_DEBUG_INC(c) do { } while (0)
1402 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1403
1404
1405 int total_ps_buffered; /* total number of all buffered unicast and
1406 * multicast packets for power saving stations
1407 */
1408
1409 bool pspolling;
1410 /*
1411 * PS can only be enabled when we have exactly one managed
1412 * interface (and monitors) in PS, this then points there.
1413 */
1414 struct ieee80211_sub_if_data *ps_sdata;
1415 struct work_struct dynamic_ps_enable_work;
1416 struct work_struct dynamic_ps_disable_work;
1417 struct timer_list dynamic_ps_timer;
1418 struct notifier_block ifa_notifier;
1419 struct notifier_block ifa6_notifier;
1420
1421 /*
1422 * The dynamic ps timeout configured from user space via WEXT -
1423 * this will override whatever chosen by mac80211 internally.
1424 */
1425 int dynamic_ps_forced_timeout;
1426
1427 int user_power_level; /* in dBm, for all interfaces */
1428
1429 enum ieee80211_smps_mode smps_mode;
1430
1431 struct work_struct restart_work;
1432
1433 #ifdef CONFIG_MAC80211_DEBUGFS
1434 struct local_debugfsdentries {
1435 struct dentry *rcdir;
1436 struct dentry *keys;
1437 } debugfs;
1438 bool force_tx_status;
1439 #endif
1440
1441 /*
1442 * Remain-on-channel support
1443 */
1444 struct delayed_work roc_work;
1445 struct list_head roc_list;
1446 struct work_struct hw_roc_start, hw_roc_done;
1447 unsigned long hw_roc_start_time;
1448 u64 roc_cookie_counter;
1449
1450 struct idr ack_status_frames;
1451 spinlock_t ack_status_lock;
1452
1453 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1454
1455 /* virtual monitor interface */
1456 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1457 struct cfg80211_chan_def monitor_chandef;
1458
1459 /* extended capabilities provided by mac80211 */
1460 u8 ext_capa[8];
1461 };
1462
1463 static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(struct net_device * dev)1464 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1465 {
1466 return netdev_priv(dev);
1467 }
1468
1469 static inline struct ieee80211_sub_if_data *
IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev * wdev)1470 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1471 {
1472 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1473 }
1474
1475 static inline struct ieee80211_supported_band *
ieee80211_get_sband(struct ieee80211_sub_if_data * sdata)1476 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1477 {
1478 struct ieee80211_local *local = sdata->local;
1479 struct ieee80211_chanctx_conf *chanctx_conf;
1480 enum nl80211_band band;
1481
1482 rcu_read_lock();
1483 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1484
1485 if (!chanctx_conf) {
1486 rcu_read_unlock();
1487 return NULL;
1488 }
1489
1490 band = chanctx_conf->def.chan->band;
1491 rcu_read_unlock();
1492
1493 return local->hw.wiphy->bands[band];
1494 }
1495
1496 /* this struct holds the value parsing from channel switch IE */
1497 struct ieee80211_csa_ie {
1498 struct cfg80211_chan_def chandef;
1499 u8 mode;
1500 u8 count;
1501 u8 ttl;
1502 u16 pre_value;
1503 u16 reason_code;
1504 u32 max_switch_time;
1505 };
1506
1507 /* Parsed Information Elements */
1508 struct ieee802_11_elems {
1509 const u8 *ie_start;
1510 size_t total_len;
1511
1512 /* pointers to IEs */
1513 const struct ieee80211_tdls_lnkie *lnk_id;
1514 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1515 const u8 *ext_capab;
1516 const u8 *ssid;
1517 const u8 *supp_rates;
1518 const u8 *ds_params;
1519 const struct ieee80211_tim_ie *tim;
1520 const u8 *challenge;
1521 const u8 *rsn;
1522 const u8 *rsnx;
1523 const u8 *erp_info;
1524 const u8 *ext_supp_rates;
1525 const u8 *wmm_info;
1526 const u8 *wmm_param;
1527 const struct ieee80211_ht_cap *ht_cap_elem;
1528 const struct ieee80211_ht_operation *ht_operation;
1529 const struct ieee80211_vht_cap *vht_cap_elem;
1530 const struct ieee80211_vht_operation *vht_operation;
1531 const struct ieee80211_meshconf_ie *mesh_config;
1532 const u8 *he_cap;
1533 const struct ieee80211_he_operation *he_operation;
1534 const struct ieee80211_he_spr *he_spr;
1535 const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1536 const struct ieee80211_he_6ghz_capa *he_6ghz_capa;
1537 const struct ieee80211_tx_pwr_env *tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT];
1538 const u8 *uora_element;
1539 const u8 *mesh_id;
1540 const u8 *peering;
1541 const __le16 *awake_window;
1542 const u8 *preq;
1543 const u8 *prep;
1544 const u8 *perr;
1545 const struct ieee80211_rann_ie *rann;
1546 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1547 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1548 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1549 const u8 *max_channel_switch_time;
1550 const u8 *country_elem;
1551 const u8 *pwr_constr_elem;
1552 const u8 *cisco_dtpc_elem;
1553 const struct ieee80211_timeout_interval_ie *timeout_int;
1554 const u8 *opmode_notif;
1555 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1556 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1557 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1558 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
1559 const struct ieee80211_bssid_index *bssid_index;
1560 u8 max_bssid_indicator;
1561 u8 dtim_count;
1562 u8 dtim_period;
1563 const struct ieee80211_addba_ext_ie *addba_ext_ie;
1564 const struct ieee80211_s1g_cap *s1g_capab;
1565 const struct ieee80211_s1g_oper_ie *s1g_oper;
1566 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat;
1567 const struct ieee80211_aid_response_ie *aid_resp;
1568
1569 /* length of them, respectively */
1570 u8 ext_capab_len;
1571 u8 ssid_len;
1572 u8 supp_rates_len;
1573 u8 tim_len;
1574 u8 challenge_len;
1575 u8 rsn_len;
1576 u8 rsnx_len;
1577 u8 ext_supp_rates_len;
1578 u8 wmm_info_len;
1579 u8 wmm_param_len;
1580 u8 he_cap_len;
1581 u8 mesh_id_len;
1582 u8 peering_len;
1583 u8 preq_len;
1584 u8 prep_len;
1585 u8 perr_len;
1586 u8 country_elem_len;
1587 u8 bssid_index_len;
1588 u8 tx_pwr_env_len[IEEE80211_TPE_MAX_IE_COUNT];
1589 u8 tx_pwr_env_num;
1590
1591 /* whether a parse error occurred while retrieving these elements */
1592 bool parse_error;
1593 };
1594
hw_to_local(struct ieee80211_hw * hw)1595 static inline struct ieee80211_local *hw_to_local(
1596 struct ieee80211_hw *hw)
1597 {
1598 return container_of(hw, struct ieee80211_local, hw);
1599 }
1600
to_txq_info(struct ieee80211_txq * txq)1601 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1602 {
1603 return container_of(txq, struct txq_info, txq);
1604 }
1605
txq_has_queue(struct ieee80211_txq * txq)1606 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1607 {
1608 struct txq_info *txqi = to_txq_info(txq);
1609
1610 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1611 }
1612
to_airtime_info(struct ieee80211_txq * txq)1613 static inline struct airtime_info *to_airtime_info(struct ieee80211_txq *txq)
1614 {
1615 struct ieee80211_sub_if_data *sdata;
1616 struct sta_info *sta;
1617
1618 if (txq->sta) {
1619 sta = container_of(txq->sta, struct sta_info, sta);
1620 return &sta->airtime[txq->ac];
1621 }
1622
1623 sdata = vif_to_sdata(txq->vif);
1624 return &sdata->airtime[txq->ac];
1625 }
1626
1627 /* To avoid divisions in the fast path, we keep pre-computed reciprocals for
1628 * airtime weight calculations. There are two different weights to keep track
1629 * of: The per-station weight and the sum of weights per phy.
1630 *
1631 * For the per-station weights (kept in airtime_info below), we use 32-bit
1632 * reciprocals with a devisor of 2^19. This lets us keep the multiplications and
1633 * divisions for the station weights as 32-bit operations at the cost of a bit
1634 * of rounding error for high weights; but the choice of divisor keeps rounding
1635 * errors <10% for weights <2^15, assuming no more than 8ms of airtime is
1636 * reported at a time.
1637 *
1638 * For the per-phy sum of weights the values can get higher, so we use 64-bit
1639 * operations for those with a 32-bit divisor, which should avoid any
1640 * significant rounding errors.
1641 */
1642 #define IEEE80211_RECIPROCAL_DIVISOR_64 0x100000000ULL
1643 #define IEEE80211_RECIPROCAL_SHIFT_64 32
1644 #define IEEE80211_RECIPROCAL_DIVISOR_32 0x80000U
1645 #define IEEE80211_RECIPROCAL_SHIFT_32 19
1646
airtime_weight_set(struct airtime_info * air_info,u16 weight)1647 static inline void airtime_weight_set(struct airtime_info *air_info, u16 weight)
1648 {
1649 if (air_info->weight == weight)
1650 return;
1651
1652 air_info->weight = weight;
1653 if (weight) {
1654 air_info->weight_reciprocal =
1655 IEEE80211_RECIPROCAL_DIVISOR_32 / weight;
1656 } else {
1657 air_info->weight_reciprocal = 0;
1658 }
1659 }
1660
airtime_weight_sum_set(struct airtime_sched_info * air_sched,int weight_sum)1661 static inline void airtime_weight_sum_set(struct airtime_sched_info *air_sched,
1662 int weight_sum)
1663 {
1664 if (air_sched->weight_sum == weight_sum)
1665 return;
1666
1667 air_sched->weight_sum = weight_sum;
1668 if (air_sched->weight_sum) {
1669 air_sched->weight_sum_reciprocal = IEEE80211_RECIPROCAL_DIVISOR_64;
1670 do_div(air_sched->weight_sum_reciprocal, air_sched->weight_sum);
1671 } else {
1672 air_sched->weight_sum_reciprocal = 0;
1673 }
1674 }
1675
1676 /* A problem when trying to enforce airtime fairness is that we want to divide
1677 * the airtime between the currently *active* stations. However, basing this on
1678 * the instantaneous queue state of stations doesn't work, as queues tend to
1679 * oscillate very quickly between empty and occupied, leading to the scheduler
1680 * thinking only a single station is active when deciding whether to allow
1681 * transmission (and thus not throttling correctly).
1682 *
1683 * To fix this we use a timer-based notion of activity: a station is considered
1684 * active if it has been scheduled within the last 100 ms; we keep a separate
1685 * list of all the stations considered active in this manner, and lazily update
1686 * the total weight of active stations from this list (filtering the stations in
1687 * the list by their 'last active' time).
1688 *
1689 * We add one additional safeguard to guard against stations that manage to get
1690 * scheduled every 100 ms but don't transmit a lot of data, and thus don't use
1691 * up any airtime. Such stations would be able to get priority for an extended
1692 * period of time if they do start transmitting at full capacity again, and so
1693 * we add an explicit maximum for how far behind a station is allowed to fall in
1694 * the virtual airtime domain. This limit is set to a relatively high value of
1695 * 20 ms because the main mechanism for catching up idle stations is the active
1696 * state as described above; i.e., the hard limit should only be hit in
1697 * pathological cases.
1698 */
1699 #define AIRTIME_ACTIVE_DURATION (100 * NSEC_PER_MSEC)
1700 #define AIRTIME_MAX_BEHIND 20000 /* 20 ms */
1701
airtime_is_active(struct airtime_info * air_info,u64 now)1702 static inline bool airtime_is_active(struct airtime_info *air_info, u64 now)
1703 {
1704 return air_info->last_scheduled >= now - AIRTIME_ACTIVE_DURATION;
1705 }
1706
airtime_set_active(struct airtime_sched_info * air_sched,struct airtime_info * air_info,u64 now)1707 static inline void airtime_set_active(struct airtime_sched_info *air_sched,
1708 struct airtime_info *air_info, u64 now)
1709 {
1710 air_info->last_scheduled = now;
1711 air_sched->last_schedule_activity = now;
1712 list_move_tail(&air_info->list, &air_sched->active_list);
1713 }
1714
airtime_catchup_v_t(struct airtime_sched_info * air_sched,u64 v_t,u64 now)1715 static inline bool airtime_catchup_v_t(struct airtime_sched_info *air_sched,
1716 u64 v_t, u64 now)
1717 {
1718 air_sched->v_t = v_t;
1719 return true;
1720 }
1721
init_airtime_info(struct airtime_info * air_info,struct airtime_sched_info * air_sched)1722 static inline void init_airtime_info(struct airtime_info *air_info,
1723 struct airtime_sched_info *air_sched)
1724 {
1725 atomic_set(&air_info->aql_tx_pending, 0);
1726 air_info->aql_limit_low = air_sched->aql_txq_limit_low;
1727 air_info->aql_limit_high = air_sched->aql_txq_limit_high;
1728 airtime_weight_set(air_info, IEEE80211_DEFAULT_AIRTIME_WEIGHT);
1729 INIT_LIST_HEAD(&air_info->list);
1730 }
1731
ieee80211_bssid_match(const u8 * raddr,const u8 * addr)1732 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1733 {
1734 return ether_addr_equal(raddr, addr) ||
1735 is_broadcast_ether_addr(raddr);
1736 }
1737
1738 static inline bool
ieee80211_have_rx_timestamp(struct ieee80211_rx_status * status)1739 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1740 {
1741 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1742 status->flag & RX_FLAG_MACTIME_END);
1743 return !!(status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END |
1744 RX_FLAG_MACTIME_PLCP_START));
1745 }
1746
1747 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1748 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1749
1750 /* This function returns the number of multicast stations connected to this
1751 * interface. It returns -1 if that number is not tracked, that is for netdevs
1752 * not in AP or AP_VLAN mode or when using 4addr.
1753 */
1754 static inline int
ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data * sdata)1755 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1756 {
1757 if (sdata->vif.type == NL80211_IFTYPE_AP)
1758 return atomic_read(&sdata->u.ap.num_mcast_sta);
1759 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1760 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1761 return -1;
1762 }
1763
1764 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1765 struct ieee80211_rx_status *status,
1766 unsigned int mpdu_len,
1767 unsigned int mpdu_offset);
1768 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1769 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1770 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1771 u32 changed);
1772 void ieee80211_configure_filter(struct ieee80211_local *local);
1773 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1774
1775 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1776 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1777 u64 *cookie, gfp_t gfp);
1778
1779 void ieee80211_check_fast_rx(struct sta_info *sta);
1780 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1781 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1782 void ieee80211_clear_fast_rx(struct sta_info *sta);
1783
1784 /* STA code */
1785 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1786 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1787 struct cfg80211_auth_request *req);
1788 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1789 struct cfg80211_assoc_request *req);
1790 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1791 struct cfg80211_deauth_request *req);
1792 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1793 struct cfg80211_disassoc_request *req);
1794 void ieee80211_send_pspoll(struct ieee80211_local *local,
1795 struct ieee80211_sub_if_data *sdata);
1796 void ieee80211_recalc_ps(struct ieee80211_local *local);
1797 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1798 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1799 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1800 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1801 struct sk_buff *skb);
1802 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
1803 struct sk_buff *skb);
1804 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1805 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1806 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1807 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1808 __le16 fc, bool acked);
1809 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1810 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1811 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1812 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
1813 u8 *bssid, u8 reason, bool tx);
1814
1815 /* IBSS code */
1816 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1817 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1818 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1819 const u8 *bssid, const u8 *addr, u32 supp_rates);
1820 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1821 struct cfg80211_ibss_params *params);
1822 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1823 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1824 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1825 struct sk_buff *skb);
1826 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1827 struct cfg80211_csa_settings *csa_settings);
1828 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1829 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1830
1831 /* OCB code */
1832 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1833 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1834 const u8 *bssid, const u8 *addr, u32 supp_rates);
1835 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1836 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1837 struct ocb_setup *setup);
1838 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1839
1840 /* mesh code */
1841 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1842 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1843 struct sk_buff *skb);
1844 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1845 struct cfg80211_csa_settings *csa_settings);
1846 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1847
1848 /* scan/BSS handling */
1849 void ieee80211_scan_work(struct work_struct *work);
1850 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1851 const u8 *ssid, u8 ssid_len,
1852 struct ieee80211_channel **channels,
1853 unsigned int n_channels,
1854 enum nl80211_bss_scan_width scan_width);
1855 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1856 struct cfg80211_scan_request *req);
1857 void ieee80211_scan_cancel(struct ieee80211_local *local);
1858 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1859 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1860
1861 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1862 struct ieee80211_bss *
1863 ieee80211_bss_info_update(struct ieee80211_local *local,
1864 struct ieee80211_rx_status *rx_status,
1865 struct ieee80211_mgmt *mgmt,
1866 size_t len,
1867 struct ieee80211_channel *channel);
1868 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1869 struct ieee80211_bss *bss);
1870
1871 /* scheduled scan handling */
1872 int
1873 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1874 struct cfg80211_sched_scan_request *req);
1875 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1876 struct cfg80211_sched_scan_request *req);
1877 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1878 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1879 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1880
1881 /* off-channel/mgmt-tx */
1882 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1883 void ieee80211_offchannel_return(struct ieee80211_local *local);
1884 void ieee80211_roc_setup(struct ieee80211_local *local);
1885 void ieee80211_start_next_roc(struct ieee80211_local *local);
1886 void ieee80211_roc_purge(struct ieee80211_local *local,
1887 struct ieee80211_sub_if_data *sdata);
1888 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1889 struct ieee80211_channel *chan,
1890 unsigned int duration, u64 *cookie);
1891 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1892 struct wireless_dev *wdev, u64 cookie);
1893 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1894 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1895 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1896 struct wireless_dev *wdev, u64 cookie);
1897
1898 /* channel switch handling */
1899 void ieee80211_csa_finalize_work(struct work_struct *work);
1900 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1901 struct cfg80211_csa_settings *params);
1902
1903 /* color change handling */
1904 void ieee80211_color_change_finalize_work(struct work_struct *work);
1905
1906 /* interface handling */
1907 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
1908 NETIF_F_HW_CSUM | NETIF_F_SG | \
1909 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE)
1910 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM)
1911 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \
1912 MAC80211_SUPPORTED_FEATURES_RX)
1913
1914 int ieee80211_iface_init(void);
1915 void ieee80211_iface_exit(void);
1916 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1917 unsigned char name_assign_type,
1918 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1919 struct vif_params *params);
1920 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1921 enum nl80211_iftype type);
1922 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1923 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1924 u32 ieee80211_idle_off(struct ieee80211_local *local);
1925 void ieee80211_recalc_idle(struct ieee80211_local *local);
1926 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1927 const int offset);
1928 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1929 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1930 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1931 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1932
1933 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1934 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1935 bool update_bss);
1936 void ieee80211_recalc_offload(struct ieee80211_local *local);
1937
ieee80211_sdata_running(struct ieee80211_sub_if_data * sdata)1938 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1939 {
1940 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1941 }
1942
1943 /* tx handling */
1944 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1945 void ieee80211_tx_pending(struct tasklet_struct *t);
1946 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1947 struct net_device *dev);
1948 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1949 struct net_device *dev);
1950 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb,
1951 struct net_device *dev);
1952 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1953 struct net_device *dev,
1954 u32 info_flags,
1955 u32 ctrl_flags,
1956 u64 *cookie);
1957 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1958 struct sk_buff_head *skbs);
1959 struct sk_buff *
1960 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1961 struct sk_buff *skb, u32 info_flags);
1962 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1963 struct ieee80211_supported_band *sband,
1964 int retry_count, int shift, bool send_to_cooked,
1965 struct ieee80211_tx_status *status);
1966
1967 void ieee80211_check_fast_xmit(struct sta_info *sta);
1968 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1969 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1970 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1971 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
1972 const u8 *buf, size_t len,
1973 const u8 *dest, __be16 proto, bool unencrypted,
1974 u64 *cookie);
1975 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
1976 const u8 *buf, size_t len);
1977 void ieee80211_resort_txq(struct ieee80211_hw *hw,
1978 struct ieee80211_txq *txq);
1979 void ieee80211_unschedule_txq(struct ieee80211_hw *hw,
1980 struct ieee80211_txq *txq,
1981 bool purge);
1982 void ieee80211_update_airtime_weight(struct ieee80211_local *local,
1983 struct airtime_sched_info *air_sched,
1984 u64 now, bool force);
1985
1986 /* HT */
1987 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1988 struct ieee80211_sta_ht_cap *ht_cap);
1989 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1990 struct ieee80211_supported_band *sband,
1991 const struct ieee80211_ht_cap *ht_cap_ie,
1992 struct sta_info *sta);
1993 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1994 const u8 *da, u16 tid,
1995 u16 initiator, u16 reason_code);
1996 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1997 enum ieee80211_smps_mode smps, const u8 *da,
1998 const u8 *bssid);
1999 void ieee80211_request_smps_ap_work(struct work_struct *work);
2000 void ieee80211_request_smps_mgd_work(struct work_struct *work);
2001 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
2002 enum ieee80211_smps_mode smps_mode_new);
2003
2004 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
2005 u16 initiator, u16 reason, bool stop);
2006 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
2007 u16 initiator, u16 reason, bool stop);
2008 void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
2009 u8 dialog_token, u16 timeout,
2010 u16 start_seq_num, u16 ba_policy, u16 tid,
2011 u16 buf_size, bool tx, bool auto_seq,
2012 const struct ieee80211_addba_ext_ie *addbaext);
2013 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
2014 enum ieee80211_agg_stop_reason reason);
2015 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
2016 struct sta_info *sta,
2017 struct ieee80211_mgmt *mgmt, size_t len);
2018 void ieee80211_process_addba_resp(struct ieee80211_local *local,
2019 struct sta_info *sta,
2020 struct ieee80211_mgmt *mgmt,
2021 size_t len);
2022 void ieee80211_process_addba_request(struct ieee80211_local *local,
2023 struct sta_info *sta,
2024 struct ieee80211_mgmt *mgmt,
2025 size_t len);
2026
2027 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2028 enum ieee80211_agg_stop_reason reason);
2029 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2030 enum ieee80211_agg_stop_reason reason);
2031 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
2032 struct tid_ampdu_tx *tid_tx);
2033 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
2034 struct tid_ampdu_tx *tid_tx);
2035 void ieee80211_ba_session_work(struct work_struct *work);
2036 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
2037 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
2038
2039 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
2040 enum nl80211_smps_mode
2041 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
2042
2043 /* VHT */
2044 void
2045 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
2046 struct ieee80211_supported_band *sband,
2047 const struct ieee80211_vht_cap *vht_cap_ie,
2048 struct sta_info *sta);
2049 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
2050 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
2051 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
2052 enum ieee80211_sta_rx_bandwidth
2053 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
2054 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
2055 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
2056 struct ieee80211_mgmt *mgmt);
2057 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2058 struct sta_info *sta, u8 opmode,
2059 enum nl80211_band band);
2060 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2061 struct sta_info *sta, u8 opmode,
2062 enum nl80211_band band);
2063 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
2064 struct ieee80211_sta_vht_cap *vht_cap);
2065 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
2066 u16 vht_mask[NL80211_VHT_NSS_MAX]);
2067 enum nl80211_chan_width
2068 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta);
2069
2070 /* HE */
2071 void
2072 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
2073 struct ieee80211_supported_band *sband,
2074 const u8 *he_cap_ie, u8 he_cap_len,
2075 const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
2076 struct sta_info *sta);
2077 void
2078 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
2079 const struct ieee80211_he_spr *he_spr_ie_elem);
2080
2081 void
2082 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
2083 const struct ieee80211_he_operation *he_op_ie_elem);
2084
2085 /* S1G */
2086 void ieee80211_s1g_sta_rate_init(struct sta_info *sta);
2087 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb);
2088 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata,
2089 struct sk_buff *skb);
2090 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata,
2091 struct sk_buff *skb);
2092
2093 /* Spectrum management */
2094 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
2095 struct ieee80211_mgmt *mgmt,
2096 size_t len);
2097 /**
2098 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
2099 * @sdata: the sdata of the interface which has received the frame
2100 * @elems: parsed 802.11 elements received with the frame
2101 * @current_band: indicates the current band
2102 * @vht_cap_info: VHT capabilities of the transmitter
2103 * @sta_flags: contains information about own capabilities and restrictions
2104 * to decide which channel switch announcements can be accepted. Only the
2105 * following subset of &enum ieee80211_sta_flags are evaluated:
2106 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
2107 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
2108 * %IEEE80211_STA_DISABLE_160MHZ.
2109 * @bssid: the currently connected bssid (for reporting)
2110 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
2111 All of them will be filled with if success only.
2112 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
2113 */
2114 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
2115 struct ieee802_11_elems *elems,
2116 enum nl80211_band current_band,
2117 u32 vht_cap_info,
2118 u32 sta_flags, u8 *bssid,
2119 struct ieee80211_csa_ie *csa_ie);
2120
2121 /* Suspend/resume and hw reconfiguration */
2122 int ieee80211_reconfig(struct ieee80211_local *local);
2123 void ieee80211_stop_device(struct ieee80211_local *local);
2124
2125 int __ieee80211_suspend(struct ieee80211_hw *hw,
2126 struct cfg80211_wowlan *wowlan);
2127
__ieee80211_resume(struct ieee80211_hw * hw)2128 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
2129 {
2130 struct ieee80211_local *local = hw_to_local(hw);
2131
2132 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
2133 !test_bit(SCAN_COMPLETED, &local->scanning),
2134 "%s: resume with hardware scan still in progress\n",
2135 wiphy_name(hw->wiphy));
2136
2137 return ieee80211_reconfig(hw_to_local(hw));
2138 }
2139
2140 /* utility functions/constants */
2141 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
2142 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
2143 int rate, int erp, int short_preamble,
2144 int shift);
2145 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
2146 struct ieee80211_tx_queue_params *qparam,
2147 int ac);
2148 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
2149 bool bss_notify, bool enable_qos);
2150 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
2151 struct sta_info *sta, struct sk_buff *skb);
2152
2153 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2154 struct sk_buff *skb, int tid,
2155 enum nl80211_band band);
2156
2157 /* sta_out needs to be checked for ERR_PTR() before using */
2158 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata,
2159 struct sk_buff *skb,
2160 struct sta_info **sta_out);
2161
2162 static inline void
ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid,enum nl80211_band band)2163 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2164 struct sk_buff *skb, int tid,
2165 enum nl80211_band band)
2166 {
2167 rcu_read_lock();
2168 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
2169 rcu_read_unlock();
2170 }
2171
ieee80211_tx_skb_tid(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid)2172 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
2173 struct sk_buff *skb, int tid)
2174 {
2175 struct ieee80211_chanctx_conf *chanctx_conf;
2176
2177 rcu_read_lock();
2178 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2179 if (WARN_ON(!chanctx_conf)) {
2180 rcu_read_unlock();
2181 kfree_skb(skb);
2182 return;
2183 }
2184
2185 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
2186 chanctx_conf->def.chan->band);
2187 rcu_read_unlock();
2188 }
2189
ieee80211_tx_skb(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb)2190 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
2191 struct sk_buff *skb)
2192 {
2193 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
2194 ieee80211_tx_skb_tid(sdata, skb, 7);
2195 }
2196
2197 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
2198 struct ieee802_11_elems *elems,
2199 u64 filter, u32 crc, u8 *transmitter_bssid,
2200 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)2201 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
2202 bool action,
2203 struct ieee802_11_elems *elems,
2204 u8 *transmitter_bssid,
2205 u8 *bss_bssid)
2206 {
2207 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0,
2208 transmitter_bssid, bss_bssid);
2209 }
2210
2211
2212 extern const int ieee802_1d_to_ac[8];
2213
ieee80211_ac_from_tid(int tid)2214 static inline int ieee80211_ac_from_tid(int tid)
2215 {
2216 return ieee802_1d_to_ac[tid & 7];
2217 }
2218
2219 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
2220 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
2221 void ieee80211_dynamic_ps_timer(struct timer_list *t);
2222 void ieee80211_send_nullfunc(struct ieee80211_local *local,
2223 struct ieee80211_sub_if_data *sdata,
2224 bool powersave);
2225 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
2226 struct ieee80211_sub_if_data *sdata);
2227 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2228 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
2229
2230 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
2231 unsigned long queues,
2232 enum queue_stop_reason reason,
2233 bool refcounted);
2234 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
2235 struct ieee80211_sub_if_data *sdata,
2236 enum queue_stop_reason reason);
2237 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
2238 struct ieee80211_sub_if_data *sdata,
2239 enum queue_stop_reason reason);
2240 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
2241 unsigned long queues,
2242 enum queue_stop_reason reason,
2243 bool refcounted);
2244 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
2245 enum queue_stop_reason reason,
2246 bool refcounted);
2247 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
2248 enum queue_stop_reason reason,
2249 bool refcounted);
2250 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
2251 void ieee80211_add_pending_skb(struct ieee80211_local *local,
2252 struct sk_buff *skb);
2253 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
2254 struct sk_buff_head *skbs);
2255 void ieee80211_flush_queues(struct ieee80211_local *local,
2256 struct ieee80211_sub_if_data *sdata, bool drop);
2257 void __ieee80211_flush_queues(struct ieee80211_local *local,
2258 struct ieee80211_sub_if_data *sdata,
2259 unsigned int queues, bool drop);
2260
ieee80211_can_run_worker(struct ieee80211_local * local)2261 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2262 {
2263 /*
2264 * It's unsafe to try to do any work during reconfigure flow.
2265 * When the flow ends the work will be requeued.
2266 */
2267 if (local->in_reconfig)
2268 return false;
2269
2270 /*
2271 * If quiescing is set, we are racing with __ieee80211_suspend.
2272 * __ieee80211_suspend flushes the workers after setting quiescing,
2273 * and we check quiescing / suspended before enqueing new workers.
2274 * We should abort the worker to avoid the races below.
2275 */
2276 if (local->quiescing)
2277 return false;
2278
2279 /*
2280 * We might already be suspended if the following scenario occurs:
2281 * __ieee80211_suspend Control path
2282 *
2283 * if (local->quiescing)
2284 * return;
2285 * local->quiescing = true;
2286 * flush_workqueue();
2287 * queue_work(...);
2288 * local->suspended = true;
2289 * local->quiescing = false;
2290 * worker starts running...
2291 */
2292 if (local->suspended)
2293 return false;
2294
2295 return true;
2296 }
2297
2298 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2299 void ieee80211_txq_set_params(struct ieee80211_local *local);
2300 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2301 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2302 struct sta_info *sta,
2303 struct txq_info *txq, int tid);
2304 void ieee80211_txq_purge(struct ieee80211_local *local,
2305 struct txq_info *txqi);
2306 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2307 struct ieee80211_sub_if_data *sdata);
2308 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2309 struct txq_info *txqi);
2310 void ieee80211_wake_txqs(struct tasklet_struct *t);
2311 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2312 u16 transaction, u16 auth_alg, u16 status,
2313 const u8 *extra, size_t extra_len, const u8 *bssid,
2314 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2315 u32 tx_flags);
2316 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2317 const u8 *da, const u8 *bssid,
2318 u16 stype, u16 reason,
2319 bool send_frame, u8 *frame_buf);
2320
2321 enum {
2322 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
2323 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
2324 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
2325 };
2326
2327 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2328 size_t buffer_len,
2329 struct ieee80211_scan_ies *ie_desc,
2330 const u8 *ie, size_t ie_len,
2331 u8 bands_used, u32 *rate_masks,
2332 struct cfg80211_chan_def *chandef,
2333 u32 flags);
2334 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2335 const u8 *src, const u8 *dst,
2336 u32 ratemask,
2337 struct ieee80211_channel *chan,
2338 const u8 *ssid, size_t ssid_len,
2339 const u8 *ie, size_t ie_len,
2340 u32 flags);
2341 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2342 struct ieee802_11_elems *elems,
2343 enum nl80211_band band, u32 *basic_rates);
2344 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2345 enum ieee80211_smps_mode smps_mode);
2346 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
2347 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
2348
2349 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2350 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2351 u16 cap);
2352 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2353 const struct cfg80211_chan_def *chandef,
2354 u16 prot_mode, bool rifs_mode);
2355 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2356 const struct cfg80211_chan_def *chandef);
2357 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2358 u32 cap);
2359 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2360 const struct cfg80211_chan_def *chandef);
2361 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2362 u8 *ieee80211_ie_build_he_cap(u8 *pos,
2363 const struct ieee80211_sta_he_cap *he_cap,
2364 u8 *end);
2365 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2366 struct sk_buff *skb);
2367 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef);
2368 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2369 const struct ieee80211_supported_band *sband,
2370 const u8 *srates, int srates_len, u32 *rates);
2371 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2372 struct sk_buff *skb, bool need_basic,
2373 enum nl80211_band band);
2374 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2375 struct sk_buff *skb, bool need_basic,
2376 enum nl80211_band band);
2377 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2378 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
2379 struct ieee80211_sta_s1g_cap *caps,
2380 struct sk_buff *skb);
2381 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
2382 struct sk_buff *skb);
2383
2384 /* channel management */
2385 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2386 struct cfg80211_chan_def *chandef);
2387 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
2388 const struct ieee80211_vht_operation *oper,
2389 const struct ieee80211_ht_operation *htop,
2390 struct cfg80211_chan_def *chandef);
2391 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
2392 const struct ieee80211_he_operation *he_oper,
2393 struct cfg80211_chan_def *chandef);
2394 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
2395 struct cfg80211_chan_def *chandef);
2396 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2397
2398 int __must_check
2399 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
2400 const struct cfg80211_chan_def *chandef,
2401 enum ieee80211_chanctx_mode mode);
2402 int __must_check
2403 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
2404 const struct cfg80211_chan_def *chandef,
2405 enum ieee80211_chanctx_mode mode,
2406 bool radar_required);
2407 int __must_check
2408 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2409 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2410
2411 int __must_check
2412 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2413 const struct cfg80211_chan_def *chandef,
2414 u32 *changed);
2415 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2416 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2417 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2418 bool clear);
2419 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2420 struct ieee80211_chanctx *ctx);
2421
2422 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2423 struct ieee80211_chanctx *chanctx);
2424 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2425 struct ieee80211_chanctx *ctx);
2426 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2427
2428 void ieee80211_dfs_cac_timer(unsigned long data);
2429 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2430 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2431 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2432 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2433 struct cfg80211_csa_settings *csa_settings);
2434
2435 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2436 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2437 const struct ieee80211_cipher_scheme *
2438 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2439 enum nl80211_iftype iftype);
2440 int ieee80211_cs_headroom(struct ieee80211_local *local,
2441 struct cfg80211_crypto_settings *crypto,
2442 enum nl80211_iftype iftype);
2443 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2444 struct ieee80211_sub_if_data *sdata);
2445 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2446 const struct cfg80211_chan_def *chandef,
2447 enum ieee80211_chanctx_mode chanmode,
2448 u8 radar_detect);
2449 int ieee80211_max_num_channels(struct ieee80211_local *local);
2450 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2451 struct ieee80211_chanctx *ctx);
2452
2453 /* TDLS */
2454 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2455 const u8 *peer, u8 action_code, u8 dialog_token,
2456 u16 status_code, u32 peer_capability,
2457 bool initiator, const u8 *extra_ies,
2458 size_t extra_ies_len);
2459 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2460 const u8 *peer, enum nl80211_tdls_operation oper);
2461 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2462 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2463 const u8 *addr, u8 oper_class,
2464 struct cfg80211_chan_def *chandef);
2465 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2466 struct net_device *dev,
2467 const u8 *addr);
2468 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2469 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2470 const u8 *peer, u16 reason);
2471 void
2472 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata,
2473 struct sk_buff *skb);
2474
2475
2476 const char *ieee80211_get_reason_code_string(u16 reason_code);
2477 u16 ieee80211_encode_usf(int val);
2478 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
2479 enum nl80211_iftype type);
2480
2481 extern const struct ethtool_ops ieee80211_ethtool_ops;
2482
2483 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw,
2484 struct ieee80211_vif *vif,
2485 struct ieee80211_sta *pubsta,
2486 int len, bool ampdu);
2487 #ifdef CONFIG_MAC80211_NOINLINE
2488 #define debug_noinline noinline
2489 #else
2490 #define debug_noinline
2491 #endif
2492
2493 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache);
2494 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache);
2495
2496 #endif /* IEEE80211_I_H */
2497
