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, waiting;
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, u16 stype,
635 struct ieee80211_mgmt *mgmt, unsigned int len,
636 const struct ieee80211_meshconf_ie *mesh_cfg,
637 struct ieee80211_rx_status *rx_status);
638
639 /* should be called with beacon_data under RCU read lock */
640 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
641 struct beacon_data *beacon);
642 /* add other framework functions here */
643 };
644
645 struct mesh_csa_settings {
646 struct rcu_head rcu_head;
647 struct cfg80211_csa_settings settings;
648 };
649
650 /**
651 * struct mesh_table
652 *
653 * @known_gates: list of known mesh gates and their mpaths by the station. The
654 * gate's mpath may or may not be resolved and active.
655 * @gates_lock: protects updates to known_gates
656 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr
657 * @walk_head: linked list containing all mesh_path objects
658 * @walk_lock: lock protecting walk_head
659 * @entries: number of entries in the table
660 */
661 struct mesh_table {
662 struct hlist_head known_gates;
663 spinlock_t gates_lock;
664 struct rhashtable rhead;
665 struct hlist_head walk_head;
666 spinlock_t walk_lock;
667 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */
668 };
669
670 struct ieee80211_if_mesh {
671 struct timer_list housekeeping_timer;
672 struct timer_list mesh_path_timer;
673 struct timer_list mesh_path_root_timer;
674
675 unsigned long wrkq_flags;
676 unsigned long mbss_changed;
677
678 bool userspace_handles_dfs;
679
680 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
681 size_t mesh_id_len;
682 /* Active Path Selection Protocol Identifier */
683 u8 mesh_pp_id;
684 /* Active Path Selection Metric Identifier */
685 u8 mesh_pm_id;
686 /* Congestion Control Mode Identifier */
687 u8 mesh_cc_id;
688 /* Synchronization Protocol Identifier */
689 u8 mesh_sp_id;
690 /* Authentication Protocol Identifier */
691 u8 mesh_auth_id;
692 /* Local mesh Sequence Number */
693 u32 sn;
694 /* Last used PREQ ID */
695 u32 preq_id;
696 atomic_t mpaths;
697 /* Timestamp of last SN update */
698 unsigned long last_sn_update;
699 /* Time when it's ok to send next PERR */
700 unsigned long next_perr;
701 /* Timestamp of last PREQ sent */
702 unsigned long last_preq;
703 struct mesh_rmc *rmc;
704 spinlock_t mesh_preq_queue_lock;
705 struct mesh_preq_queue preq_queue;
706 int preq_queue_len;
707 struct mesh_stats mshstats;
708 struct mesh_config mshcfg;
709 atomic_t estab_plinks;
710 u32 mesh_seqnum;
711 bool accepting_plinks;
712 int num_gates;
713 struct beacon_data __rcu *beacon;
714 const u8 *ie;
715 u8 ie_len;
716 enum {
717 IEEE80211_MESH_SEC_NONE = 0x0,
718 IEEE80211_MESH_SEC_AUTHED = 0x1,
719 IEEE80211_MESH_SEC_SECURED = 0x2,
720 } security;
721 bool user_mpm;
722 /* Extensible Synchronization Framework */
723 const struct ieee80211_mesh_sync_ops *sync_ops;
724 s64 sync_offset_clockdrift_max;
725 spinlock_t sync_offset_lock;
726 /* mesh power save */
727 enum nl80211_mesh_power_mode nonpeer_pm;
728 int ps_peers_light_sleep;
729 int ps_peers_deep_sleep;
730 struct ps_data ps;
731 /* Channel Switching Support */
732 struct mesh_csa_settings __rcu *csa;
733 enum {
734 IEEE80211_MESH_CSA_ROLE_NONE,
735 IEEE80211_MESH_CSA_ROLE_INIT,
736 IEEE80211_MESH_CSA_ROLE_REPEATER,
737 } csa_role;
738 u8 chsw_ttl;
739 u16 pre_value;
740
741 /* offset from skb->data while building IE */
742 int meshconf_offset;
743
744 struct mesh_table mesh_paths;
745 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */
746 int mesh_paths_generation;
747 int mpp_paths_generation;
748 };
749
750 #ifdef CONFIG_MAC80211_MESH
751 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
752 do { (msh)->mshstats.name++; } while (0)
753 #else
754 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
755 do { } while (0)
756 #endif
757
758 /**
759 * enum ieee80211_sub_if_data_flags - virtual interface flags
760 *
761 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
762 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
763 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
764 * associated stations and deliver multicast frames both
765 * back to wireless media and to the local net stack.
766 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
767 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
768 */
769 enum ieee80211_sub_if_data_flags {
770 IEEE80211_SDATA_ALLMULTI = BIT(0),
771 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
772 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
773 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
774 IEEE80211_SDATA_IN_DRIVER = BIT(5),
775 };
776
777 /**
778 * enum ieee80211_sdata_state_bits - virtual interface state bits
779 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
780 * mirrors netif_running() but is separate for interface type
781 * change handling while the interface is up
782 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
783 * mode, so queues are stopped
784 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
785 * to offchannel, reset when offchannel returns
786 */
787 enum ieee80211_sdata_state_bits {
788 SDATA_STATE_RUNNING,
789 SDATA_STATE_OFFCHANNEL,
790 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
791 };
792
793 /**
794 * enum ieee80211_chanctx_mode - channel context configuration mode
795 *
796 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
797 * multiple interfaces
798 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
799 * only by a single interface. This can be used for example for
800 * non-fixed channel IBSS.
801 */
802 enum ieee80211_chanctx_mode {
803 IEEE80211_CHANCTX_SHARED,
804 IEEE80211_CHANCTX_EXCLUSIVE
805 };
806
807 /**
808 * enum ieee80211_chanctx_replace_state - channel context replacement state
809 *
810 * This is used for channel context in-place reservations that require channel
811 * context switch/swap.
812 *
813 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
814 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
815 * by a (not yet registered) channel context pointed by %replace_ctx.
816 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
817 * replaces an existing channel context pointed to by %replace_ctx.
818 */
819 enum ieee80211_chanctx_replace_state {
820 IEEE80211_CHANCTX_REPLACE_NONE,
821 IEEE80211_CHANCTX_WILL_BE_REPLACED,
822 IEEE80211_CHANCTX_REPLACES_OTHER,
823 };
824
825 struct ieee80211_chanctx {
826 struct list_head list;
827 struct rcu_head rcu_head;
828
829 struct list_head assigned_vifs;
830 struct list_head reserved_vifs;
831
832 enum ieee80211_chanctx_replace_state replace_state;
833 struct ieee80211_chanctx *replace_ctx;
834
835 enum ieee80211_chanctx_mode mode;
836 bool driver_present;
837
838 struct ieee80211_chanctx_conf conf;
839 };
840
841 struct mac80211_qos_map {
842 struct cfg80211_qos_map qos_map;
843 struct rcu_head rcu_head;
844 };
845
846 enum txq_info_flags {
847 IEEE80211_TXQ_STOP,
848 IEEE80211_TXQ_AMPDU,
849 IEEE80211_TXQ_NO_AMSDU,
850 IEEE80211_TXQ_STOP_NETIF_TX,
851 };
852
853 /**
854 * struct txq_info - per tid queue
855 *
856 * @tin: contains packets split into multiple flows
857 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
858 * a fq_flow which is already owned by a different tin
859 * @def_cvars: codel vars for @def_flow
860 * @schedule_order: used with ieee80211_local->active_txqs
861 * @frags: used to keep fragments created after dequeue
862 */
863 struct txq_info {
864 struct fq_tin tin;
865 struct codel_vars def_cvars;
866 struct codel_stats cstats;
867 struct rb_node schedule_order;
868
869 struct sk_buff_head frags;
870 unsigned long flags;
871
872 /* keep last! */
873 struct ieee80211_txq txq;
874 };
875
876 struct ieee80211_if_mntr {
877 u32 flags;
878 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
879
880 struct list_head list;
881 };
882
883 /**
884 * struct ieee80211_if_nan - NAN state
885 *
886 * @conf: current NAN configuration
887 * @func_ids: a bitmap of available instance_id's
888 */
889 struct ieee80211_if_nan {
890 struct cfg80211_nan_conf conf;
891
892 /* protects function_inst_ids */
893 spinlock_t func_lock;
894 struct idr function_inst_ids;
895 };
896
897 struct ieee80211_sub_if_data {
898 struct list_head list;
899
900 struct wireless_dev wdev;
901
902 /* keys */
903 struct list_head key_list;
904
905 /* count for keys needing tailroom space allocation */
906 int crypto_tx_tailroom_needed_cnt;
907 int crypto_tx_tailroom_pending_dec;
908 struct delayed_work dec_tailroom_needed_wk;
909
910 struct net_device *dev;
911 struct ieee80211_local *local;
912
913 unsigned int flags;
914
915 unsigned long state;
916
917 char name[IFNAMSIZ];
918
919 struct ieee80211_fragment_cache frags;
920
921 /* TID bitmap for NoAck policy */
922 u16 noack_map;
923
924 /* bit field of ACM bits (BIT(802.1D tag)) */
925 u8 wmm_acm;
926
927 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS +
928 NUM_DEFAULT_MGMT_KEYS +
929 NUM_DEFAULT_BEACON_KEYS];
930 struct ieee80211_key __rcu *default_unicast_key;
931 struct ieee80211_key __rcu *default_multicast_key;
932 struct ieee80211_key __rcu *default_mgmt_key;
933 struct ieee80211_key __rcu *default_beacon_key;
934
935 u16 sequence_number;
936 __be16 control_port_protocol;
937 bool control_port_no_encrypt;
938 bool control_port_no_preauth;
939 bool control_port_over_nl80211;
940 int encrypt_headroom;
941
942 atomic_t num_tx_queued;
943 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
944 struct mac80211_qos_map __rcu *qos_map;
945
946 struct airtime_info airtime[IEEE80211_NUM_ACS];
947
948 struct work_struct csa_finalize_work;
949 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
950 struct cfg80211_chan_def csa_chandef;
951
952 struct work_struct color_change_finalize_work;
953
954 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
955 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
956
957 /* context reservation -- protected with chanctx_mtx */
958 struct ieee80211_chanctx *reserved_chanctx;
959 struct cfg80211_chan_def reserved_chandef;
960 bool reserved_radar_required;
961 bool reserved_ready;
962
963 /* used to reconfigure hardware SM PS */
964 struct work_struct recalc_smps;
965
966 struct work_struct work;
967 struct sk_buff_head skb_queue;
968 struct sk_buff_head status_queue;
969
970 u8 needed_rx_chains;
971 enum ieee80211_smps_mode smps_mode;
972
973 int user_power_level; /* in dBm */
974 int ap_power_level; /* in dBm */
975
976 bool radar_required;
977 struct delayed_work dfs_cac_timer_work;
978
979 /*
980 * AP this belongs to: self in AP mode and
981 * corresponding AP in VLAN mode, NULL for
982 * all others (might be needed later in IBSS)
983 */
984 struct ieee80211_if_ap *bss;
985
986 /* bitmap of allowed (non-MCS) rate indexes for rate control */
987 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
988
989 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
990 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
991
992 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
993 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
994
995 /* Beacon frame (non-MCS) rate (as a bitmap) */
996 u32 beacon_rateidx_mask[NUM_NL80211_BANDS];
997 bool beacon_rate_set;
998
999 union {
1000 struct ieee80211_if_ap ap;
1001 struct ieee80211_if_vlan vlan;
1002 struct ieee80211_if_managed mgd;
1003 struct ieee80211_if_ibss ibss;
1004 struct ieee80211_if_mesh mesh;
1005 struct ieee80211_if_ocb ocb;
1006 struct ieee80211_if_mntr mntr;
1007 struct ieee80211_if_nan nan;
1008 } u;
1009
1010 #ifdef CONFIG_MAC80211_DEBUGFS
1011 struct {
1012 struct dentry *subdir_stations;
1013 struct dentry *default_unicast_key;
1014 struct dentry *default_multicast_key;
1015 struct dentry *default_mgmt_key;
1016 struct dentry *default_beacon_key;
1017 } debugfs;
1018 #endif
1019
1020 /* must be last, dynamically sized area in this! */
1021 struct ieee80211_vif vif;
1022 };
1023
1024 static inline
vif_to_sdata(struct ieee80211_vif * p)1025 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
1026 {
1027 return container_of(p, struct ieee80211_sub_if_data, vif);
1028 }
1029
sdata_lock(struct ieee80211_sub_if_data * sdata)1030 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
1031 __acquires(&sdata->wdev.mtx)
1032 {
1033 mutex_lock(&sdata->wdev.mtx);
1034 __acquire(&sdata->wdev.mtx);
1035 }
1036
sdata_unlock(struct ieee80211_sub_if_data * sdata)1037 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
1038 __releases(&sdata->wdev.mtx)
1039 {
1040 mutex_unlock(&sdata->wdev.mtx);
1041 __release(&sdata->wdev.mtx);
1042 }
1043
1044 #define sdata_dereference(p, sdata) \
1045 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
1046
1047 static inline void
sdata_assert_lock(struct ieee80211_sub_if_data * sdata)1048 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
1049 {
1050 lockdep_assert_held(&sdata->wdev.mtx);
1051 }
1052
1053 static inline int
ieee80211_chandef_get_shift(struct cfg80211_chan_def * chandef)1054 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1055 {
1056 switch (chandef->width) {
1057 case NL80211_CHAN_WIDTH_5:
1058 return 2;
1059 case NL80211_CHAN_WIDTH_10:
1060 return 1;
1061 default:
1062 return 0;
1063 }
1064 }
1065
1066 static inline int
ieee80211_vif_get_shift(struct ieee80211_vif * vif)1067 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1068 {
1069 struct ieee80211_chanctx_conf *chanctx_conf;
1070 int shift = 0;
1071
1072 rcu_read_lock();
1073 chanctx_conf = rcu_dereference(vif->chanctx_conf);
1074 if (chanctx_conf)
1075 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1076 rcu_read_unlock();
1077
1078 return shift;
1079 }
1080
1081 enum {
1082 IEEE80211_RX_MSG = 1,
1083 IEEE80211_TX_STATUS_MSG = 2,
1084 };
1085
1086 enum queue_stop_reason {
1087 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1088 IEEE80211_QUEUE_STOP_REASON_PS,
1089 IEEE80211_QUEUE_STOP_REASON_CSA,
1090 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1091 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1092 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1093 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1094 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1095 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1096 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1097 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE,
1098
1099 IEEE80211_QUEUE_STOP_REASONS,
1100 };
1101
1102 #ifdef CONFIG_MAC80211_LEDS
1103 struct tpt_led_trigger {
1104 char name[32];
1105 const struct ieee80211_tpt_blink *blink_table;
1106 unsigned int blink_table_len;
1107 struct timer_list timer;
1108 struct ieee80211_local *local;
1109 unsigned long prev_traffic;
1110 unsigned long tx_bytes, rx_bytes;
1111 unsigned int active, want;
1112 bool running;
1113 };
1114 #endif
1115
1116 /**
1117 * mac80211 scan flags - currently active scan mode
1118 *
1119 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1120 * well be on the operating channel
1121 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1122 * determine if we are on the operating channel or not
1123 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1124 * channel. This should not interrupt normal traffic.
1125 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1126 * that the scan completed.
1127 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1128 * a scan complete for an aborted scan.
1129 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1130 * cancelled.
1131 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR
1132 * and could send a probe request after receiving a beacon.
1133 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request
1134 */
1135 enum {
1136 SCAN_SW_SCANNING,
1137 SCAN_HW_SCANNING,
1138 SCAN_ONCHANNEL_SCANNING,
1139 SCAN_COMPLETED,
1140 SCAN_ABORTED,
1141 SCAN_HW_CANCELLED,
1142 SCAN_BEACON_WAIT,
1143 SCAN_BEACON_DONE,
1144 };
1145
1146 /**
1147 * enum mac80211_scan_state - scan state machine states
1148 *
1149 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1150 * determines if we should keep on scanning or switch back to the
1151 * operating channel
1152 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1153 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1154 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1155 * send out data
1156 * @SCAN_RESUME: Resume the scan and scan the next channel
1157 * @SCAN_ABORT: Abort the scan and go back to operating channel
1158 */
1159 enum mac80211_scan_state {
1160 SCAN_DECISION,
1161 SCAN_SET_CHANNEL,
1162 SCAN_SEND_PROBE,
1163 SCAN_SUSPEND,
1164 SCAN_RESUME,
1165 SCAN_ABORT,
1166 };
1167
1168 /**
1169 * struct airtime_sched_info - state used for airtime scheduling and AQL
1170 *
1171 * @lock: spinlock that protects all the fields in this struct
1172 * @active_txqs: rbtree of currently backlogged queues, sorted by virtual time
1173 * @schedule_pos: the current position maintained while a driver walks the tree
1174 * with ieee80211_next_txq()
1175 * @active_list: list of struct airtime_info structs that were active within
1176 * the last AIRTIME_ACTIVE_DURATION (100 ms), used to compute
1177 * weight_sum
1178 * @last_weight_update: used for rate limiting walking active_list
1179 * @last_schedule_time: tracks the last time a transmission was scheduled; used
1180 * for catching up v_t if no stations are eligible for
1181 * transmission.
1182 * @v_t: global virtual time; queues with v_t < this are eligible for
1183 * transmission
1184 * @weight_sum: total sum of all active stations used for dividing airtime
1185 * @weight_sum_reciprocal: reciprocal of weight_sum (to avoid divisions in fast
1186 * path - see comment above
1187 * IEEE80211_RECIPROCAL_DIVISOR_64)
1188 * @aql_txq_limit_low: AQL limit when total outstanding airtime
1189 * is < IEEE80211_AQL_THRESHOLD
1190 * @aql_txq_limit_high: AQL limit when total outstanding airtime
1191 * is > IEEE80211_AQL_THRESHOLD
1192 */
1193 struct airtime_sched_info {
1194 spinlock_t lock;
1195 struct rb_root_cached active_txqs;
1196 struct rb_node *schedule_pos;
1197 struct list_head active_list;
1198 u64 last_weight_update;
1199 u64 last_schedule_activity;
1200 u64 v_t;
1201 u64 weight_sum;
1202 u64 weight_sum_reciprocal;
1203 u32 aql_txq_limit_low;
1204 u32 aql_txq_limit_high;
1205 };
1206 DECLARE_STATIC_KEY_FALSE(aql_disable);
1207
1208 struct ieee80211_local {
1209 /* embed the driver visible part.
1210 * don't cast (use the static inlines below), but we keep
1211 * it first anyway so they become a no-op */
1212 struct ieee80211_hw hw;
1213
1214 struct fq fq;
1215 struct codel_vars *cvars;
1216 struct codel_params cparams;
1217
1218 /* protects active_txqs and txqi->schedule_order */
1219 struct airtime_sched_info airtime[IEEE80211_NUM_ACS];
1220 u16 airtime_flags;
1221 u32 aql_threshold;
1222 atomic_t aql_total_pending_airtime;
1223
1224 const struct ieee80211_ops *ops;
1225
1226 /*
1227 * private workqueue to mac80211. mac80211 makes this accessible
1228 * via ieee80211_queue_work()
1229 */
1230 struct workqueue_struct *workqueue;
1231
1232 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1233 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1234 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1235 spinlock_t queue_stop_reason_lock;
1236
1237 int open_count;
1238 int monitors, cooked_mntrs;
1239 /* number of interfaces with corresponding FIF_ flags */
1240 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1241 fif_probe_req;
1242 bool probe_req_reg;
1243 bool rx_mcast_action_reg;
1244 unsigned int filter_flags; /* FIF_* */
1245
1246 bool wiphy_ciphers_allocated;
1247
1248 bool use_chanctx;
1249
1250 /* protects the aggregated multicast list and filter calls */
1251 spinlock_t filter_lock;
1252
1253 /* used for uploading changed mc list */
1254 struct work_struct reconfig_filter;
1255
1256 /* aggregated multicast list */
1257 struct netdev_hw_addr_list mc_list;
1258
1259 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1260
1261 /*
1262 * suspended is true if we finished all the suspend _and_ we have
1263 * not yet come up from resume. This is to be used by mac80211
1264 * to ensure driver sanity during suspend and mac80211's own
1265 * sanity. It can eventually be used for WoW as well.
1266 */
1267 bool suspended;
1268
1269 /*
1270 * Resuming is true while suspended, but when we're reprogramming the
1271 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1272 * again even though some other parts of the stack are still suspended
1273 * and we still drop received frames to avoid waking the stack.
1274 */
1275 bool resuming;
1276
1277 /*
1278 * quiescing is true during the suspend process _only_ to
1279 * ease timer cancelling etc.
1280 */
1281 bool quiescing;
1282
1283 /* device is started */
1284 bool started;
1285
1286 /* device is during a HW reconfig */
1287 bool in_reconfig;
1288
1289 /* wowlan is enabled -- don't reconfig on resume */
1290 bool wowlan;
1291
1292 struct work_struct radar_detected_work;
1293
1294 /* number of RX chains the hardware has */
1295 u8 rx_chains;
1296
1297 /* bitmap of which sbands were copied */
1298 u8 sband_allocated;
1299
1300 int tx_headroom; /* required headroom for hardware/radiotap */
1301
1302 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1303 * added to skb_queue will be processed, but frames in
1304 * skb_queue_unreliable may be dropped if the total length of these
1305 * queues increases over the limit. */
1306 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1307 struct tasklet_struct tasklet;
1308 struct sk_buff_head skb_queue;
1309 struct sk_buff_head skb_queue_unreliable;
1310
1311 spinlock_t rx_path_lock;
1312
1313 /* Station data */
1314 /*
1315 * The mutex only protects the list, hash table and
1316 * counter, reads are done with RCU.
1317 */
1318 struct mutex sta_mtx;
1319 spinlock_t tim_lock;
1320 unsigned long num_sta;
1321 struct list_head sta_list;
1322 struct rhltable sta_hash;
1323 struct timer_list sta_cleanup;
1324 int sta_generation;
1325
1326 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1327 struct tasklet_struct tx_pending_tasklet;
1328 struct tasklet_struct wake_txqs_tasklet;
1329
1330 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1331
1332 /* number of interfaces with allmulti RX */
1333 atomic_t iff_allmultis;
1334
1335 struct rate_control_ref *rate_ctrl;
1336
1337 struct arc4_ctx wep_tx_ctx;
1338 struct arc4_ctx wep_rx_ctx;
1339 u32 wep_iv;
1340
1341 /* see iface.c */
1342 struct list_head interfaces;
1343 struct list_head mon_list; /* only that are IFF_UP && !cooked */
1344 struct mutex iflist_mtx;
1345
1346 /*
1347 * Key mutex, protects sdata's key_list and sta_info's
1348 * key pointers and ptk_idx (write access, they're RCU.)
1349 */
1350 struct mutex key_mtx;
1351
1352 /* mutex for scan and work locking */
1353 struct mutex mtx;
1354
1355 /* Scanning and BSS list */
1356 unsigned long scanning;
1357 struct cfg80211_ssid scan_ssid;
1358 struct cfg80211_scan_request *int_scan_req;
1359 struct cfg80211_scan_request __rcu *scan_req;
1360 struct ieee80211_scan_request *hw_scan_req;
1361 struct cfg80211_chan_def scan_chandef;
1362 enum nl80211_band hw_scan_band;
1363 int scan_channel_idx;
1364 int scan_ies_len;
1365 int hw_scan_ies_bufsize;
1366 struct cfg80211_scan_info scan_info;
1367
1368 struct work_struct sched_scan_stopped_work;
1369 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1370 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1371 u8 scan_addr[ETH_ALEN];
1372
1373 unsigned long leave_oper_channel_time;
1374 enum mac80211_scan_state next_scan_state;
1375 struct delayed_work scan_work;
1376 struct ieee80211_sub_if_data __rcu *scan_sdata;
1377 /* For backward compatibility only -- do not use */
1378 struct cfg80211_chan_def _oper_chandef;
1379
1380 /* Temporary remain-on-channel for off-channel operations */
1381 struct ieee80211_channel *tmp_channel;
1382
1383 /* channel contexts */
1384 struct list_head chanctx_list;
1385 struct mutex chanctx_mtx;
1386
1387 #ifdef CONFIG_MAC80211_LEDS
1388 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1389 struct led_trigger tpt_led;
1390 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1391 atomic_t radio_led_active, tpt_led_active;
1392 struct tpt_led_trigger *tpt_led_trigger;
1393 #endif
1394
1395 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1396 /* SNMP counters */
1397 /* dot11CountersTable */
1398 u32 dot11TransmittedFragmentCount;
1399 u32 dot11MulticastTransmittedFrameCount;
1400 u32 dot11FailedCount;
1401 u32 dot11RetryCount;
1402 u32 dot11MultipleRetryCount;
1403 u32 dot11FrameDuplicateCount;
1404 u32 dot11ReceivedFragmentCount;
1405 u32 dot11MulticastReceivedFrameCount;
1406 u32 dot11TransmittedFrameCount;
1407
1408 /* TX/RX handler statistics */
1409 unsigned int tx_handlers_drop;
1410 unsigned int tx_handlers_queued;
1411 unsigned int tx_handlers_drop_wep;
1412 unsigned int tx_handlers_drop_not_assoc;
1413 unsigned int tx_handlers_drop_unauth_port;
1414 unsigned int rx_handlers_drop;
1415 unsigned int rx_handlers_queued;
1416 unsigned int rx_handlers_drop_nullfunc;
1417 unsigned int rx_handlers_drop_defrag;
1418 unsigned int tx_expand_skb_head;
1419 unsigned int tx_expand_skb_head_cloned;
1420 unsigned int rx_expand_skb_head_defrag;
1421 unsigned int rx_handlers_fragments;
1422 unsigned int tx_status_drop;
1423 #define I802_DEBUG_INC(c) (c)++
1424 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1425 #define I802_DEBUG_INC(c) do { } while (0)
1426 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1427
1428
1429 int total_ps_buffered; /* total number of all buffered unicast and
1430 * multicast packets for power saving stations
1431 */
1432
1433 bool pspolling;
1434 /*
1435 * PS can only be enabled when we have exactly one managed
1436 * interface (and monitors) in PS, this then points there.
1437 */
1438 struct ieee80211_sub_if_data *ps_sdata;
1439 struct work_struct dynamic_ps_enable_work;
1440 struct work_struct dynamic_ps_disable_work;
1441 struct timer_list dynamic_ps_timer;
1442 struct notifier_block ifa_notifier;
1443 struct notifier_block ifa6_notifier;
1444
1445 /*
1446 * The dynamic ps timeout configured from user space via WEXT -
1447 * this will override whatever chosen by mac80211 internally.
1448 */
1449 int dynamic_ps_forced_timeout;
1450
1451 int user_power_level; /* in dBm, for all interfaces */
1452
1453 enum ieee80211_smps_mode smps_mode;
1454
1455 struct work_struct restart_work;
1456
1457 #ifdef CONFIG_MAC80211_DEBUGFS
1458 struct local_debugfsdentries {
1459 struct dentry *rcdir;
1460 struct dentry *keys;
1461 } debugfs;
1462 bool force_tx_status;
1463 #endif
1464
1465 /*
1466 * Remain-on-channel support
1467 */
1468 struct delayed_work roc_work;
1469 struct list_head roc_list;
1470 struct work_struct hw_roc_start, hw_roc_done;
1471 unsigned long hw_roc_start_time;
1472 u64 roc_cookie_counter;
1473
1474 struct idr ack_status_frames;
1475 spinlock_t ack_status_lock;
1476
1477 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1478
1479 /* virtual monitor interface */
1480 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1481 struct cfg80211_chan_def monitor_chandef;
1482
1483 /* extended capabilities provided by mac80211 */
1484 u8 ext_capa[8];
1485 };
1486
1487 static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(struct net_device * dev)1488 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1489 {
1490 return netdev_priv(dev);
1491 }
1492
1493 static inline struct ieee80211_sub_if_data *
IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev * wdev)1494 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1495 {
1496 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1497 }
1498
1499 static inline struct ieee80211_supported_band *
ieee80211_get_sband(struct ieee80211_sub_if_data * sdata)1500 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1501 {
1502 struct ieee80211_local *local = sdata->local;
1503 struct ieee80211_chanctx_conf *chanctx_conf;
1504 enum nl80211_band band;
1505
1506 rcu_read_lock();
1507 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1508
1509 if (!chanctx_conf) {
1510 rcu_read_unlock();
1511 return NULL;
1512 }
1513
1514 band = chanctx_conf->def.chan->band;
1515 rcu_read_unlock();
1516
1517 return local->hw.wiphy->bands[band];
1518 }
1519
1520 /* this struct holds the value parsing from channel switch IE */
1521 struct ieee80211_csa_ie {
1522 struct cfg80211_chan_def chandef;
1523 u8 mode;
1524 u8 count;
1525 u8 ttl;
1526 u16 pre_value;
1527 u16 reason_code;
1528 u32 max_switch_time;
1529 };
1530
1531 /* Parsed Information Elements */
1532 struct ieee802_11_elems {
1533 const u8 *ie_start;
1534 size_t total_len;
1535 u32 crc;
1536
1537 /* pointers to IEs */
1538 const struct ieee80211_tdls_lnkie *lnk_id;
1539 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1540 const u8 *ext_capab;
1541 const u8 *ssid;
1542 const u8 *supp_rates;
1543 const u8 *ds_params;
1544 const struct ieee80211_tim_ie *tim;
1545 const u8 *rsn;
1546 const u8 *rsnx;
1547 const u8 *erp_info;
1548 const u8 *ext_supp_rates;
1549 const u8 *wmm_info;
1550 const u8 *wmm_param;
1551 const struct ieee80211_ht_cap *ht_cap_elem;
1552 const struct ieee80211_ht_operation *ht_operation;
1553 const struct ieee80211_vht_cap *vht_cap_elem;
1554 const struct ieee80211_vht_operation *vht_operation;
1555 const struct ieee80211_meshconf_ie *mesh_config;
1556 const u8 *he_cap;
1557 const struct ieee80211_he_operation *he_operation;
1558 const struct ieee80211_he_spr *he_spr;
1559 const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1560 const struct ieee80211_he_6ghz_capa *he_6ghz_capa;
1561 const struct ieee80211_tx_pwr_env *tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT];
1562 const u8 *uora_element;
1563 const u8 *mesh_id;
1564 const u8 *peering;
1565 const __le16 *awake_window;
1566 const u8 *preq;
1567 const u8 *prep;
1568 const u8 *perr;
1569 const struct ieee80211_rann_ie *rann;
1570 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1571 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1572 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1573 const u8 *max_channel_switch_time;
1574 const u8 *country_elem;
1575 const u8 *pwr_constr_elem;
1576 const u8 *cisco_dtpc_elem;
1577 const struct ieee80211_timeout_interval_ie *timeout_int;
1578 const u8 *opmode_notif;
1579 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1580 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1581 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1582 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
1583 const struct ieee80211_bssid_index *bssid_index;
1584 u8 max_bssid_indicator;
1585 u8 dtim_count;
1586 u8 dtim_period;
1587 const struct ieee80211_addba_ext_ie *addba_ext_ie;
1588 const struct ieee80211_s1g_cap *s1g_capab;
1589 const struct ieee80211_s1g_oper_ie *s1g_oper;
1590 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat;
1591 const struct ieee80211_aid_response_ie *aid_resp;
1592
1593 /* length of them, respectively */
1594 u8 ext_capab_len;
1595 u8 ssid_len;
1596 u8 supp_rates_len;
1597 u8 tim_len;
1598 u8 rsn_len;
1599 u8 rsnx_len;
1600 u8 ext_supp_rates_len;
1601 u8 wmm_info_len;
1602 u8 wmm_param_len;
1603 u8 he_cap_len;
1604 u8 mesh_id_len;
1605 u8 peering_len;
1606 u8 preq_len;
1607 u8 prep_len;
1608 u8 perr_len;
1609 u8 country_elem_len;
1610 u8 bssid_index_len;
1611 u8 tx_pwr_env_len[IEEE80211_TPE_MAX_IE_COUNT];
1612 u8 tx_pwr_env_num;
1613
1614 /* whether a parse error occurred while retrieving these elements */
1615 bool parse_error;
1616
1617 /*
1618 * scratch buffer that can be used for various element parsing related
1619 * tasks, e.g., element de-fragmentation etc.
1620 */
1621 size_t scratch_len;
1622 u8 *scratch_pos;
1623 u8 scratch[];
1624 };
1625
hw_to_local(struct ieee80211_hw * hw)1626 static inline struct ieee80211_local *hw_to_local(
1627 struct ieee80211_hw *hw)
1628 {
1629 return container_of(hw, struct ieee80211_local, hw);
1630 }
1631
to_txq_info(struct ieee80211_txq * txq)1632 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1633 {
1634 return container_of(txq, struct txq_info, txq);
1635 }
1636
txq_has_queue(struct ieee80211_txq * txq)1637 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1638 {
1639 struct txq_info *txqi = to_txq_info(txq);
1640
1641 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1642 }
1643
to_airtime_info(struct ieee80211_txq * txq)1644 static inline struct airtime_info *to_airtime_info(struct ieee80211_txq *txq)
1645 {
1646 struct ieee80211_sub_if_data *sdata;
1647 struct sta_info *sta;
1648
1649 if (txq->sta) {
1650 sta = container_of(txq->sta, struct sta_info, sta);
1651 return &sta->airtime[txq->ac];
1652 }
1653
1654 sdata = vif_to_sdata(txq->vif);
1655 return &sdata->airtime[txq->ac];
1656 }
1657
1658 /* To avoid divisions in the fast path, we keep pre-computed reciprocals for
1659 * airtime weight calculations. There are two different weights to keep track
1660 * of: The per-station weight and the sum of weights per phy.
1661 *
1662 * For the per-station weights (kept in airtime_info below), we use 32-bit
1663 * reciprocals with a devisor of 2^19. This lets us keep the multiplications and
1664 * divisions for the station weights as 32-bit operations at the cost of a bit
1665 * of rounding error for high weights; but the choice of divisor keeps rounding
1666 * errors <10% for weights <2^15, assuming no more than 8ms of airtime is
1667 * reported at a time.
1668 *
1669 * For the per-phy sum of weights the values can get higher, so we use 64-bit
1670 * operations for those with a 32-bit divisor, which should avoid any
1671 * significant rounding errors.
1672 */
1673 #define IEEE80211_RECIPROCAL_DIVISOR_64 0x100000000ULL
1674 #define IEEE80211_RECIPROCAL_SHIFT_64 32
1675 #define IEEE80211_RECIPROCAL_DIVISOR_32 0x80000U
1676 #define IEEE80211_RECIPROCAL_SHIFT_32 19
1677
airtime_weight_set(struct airtime_info * air_info,u16 weight)1678 static inline void airtime_weight_set(struct airtime_info *air_info, u16 weight)
1679 {
1680 if (air_info->weight == weight)
1681 return;
1682
1683 air_info->weight = weight;
1684 if (weight) {
1685 air_info->weight_reciprocal =
1686 IEEE80211_RECIPROCAL_DIVISOR_32 / weight;
1687 } else {
1688 air_info->weight_reciprocal = 0;
1689 }
1690 }
1691
airtime_weight_sum_set(struct airtime_sched_info * air_sched,int weight_sum)1692 static inline void airtime_weight_sum_set(struct airtime_sched_info *air_sched,
1693 int weight_sum)
1694 {
1695 if (air_sched->weight_sum == weight_sum)
1696 return;
1697
1698 air_sched->weight_sum = weight_sum;
1699 if (air_sched->weight_sum) {
1700 air_sched->weight_sum_reciprocal = IEEE80211_RECIPROCAL_DIVISOR_64;
1701 do_div(air_sched->weight_sum_reciprocal, air_sched->weight_sum);
1702 } else {
1703 air_sched->weight_sum_reciprocal = 0;
1704 }
1705 }
1706
1707 /* A problem when trying to enforce airtime fairness is that we want to divide
1708 * the airtime between the currently *active* stations. However, basing this on
1709 * the instantaneous queue state of stations doesn't work, as queues tend to
1710 * oscillate very quickly between empty and occupied, leading to the scheduler
1711 * thinking only a single station is active when deciding whether to allow
1712 * transmission (and thus not throttling correctly).
1713 *
1714 * To fix this we use a timer-based notion of activity: a station is considered
1715 * active if it has been scheduled within the last 100 ms; we keep a separate
1716 * list of all the stations considered active in this manner, and lazily update
1717 * the total weight of active stations from this list (filtering the stations in
1718 * the list by their 'last active' time).
1719 *
1720 * We add one additional safeguard to guard against stations that manage to get
1721 * scheduled every 100 ms but don't transmit a lot of data, and thus don't use
1722 * up any airtime. Such stations would be able to get priority for an extended
1723 * period of time if they do start transmitting at full capacity again, and so
1724 * we add an explicit maximum for how far behind a station is allowed to fall in
1725 * the virtual airtime domain. This limit is set to a relatively high value of
1726 * 20 ms because the main mechanism for catching up idle stations is the active
1727 * state as described above; i.e., the hard limit should only be hit in
1728 * pathological cases.
1729 */
1730 #define AIRTIME_ACTIVE_DURATION (100 * NSEC_PER_MSEC)
1731 #define AIRTIME_MAX_BEHIND 20000 /* 20 ms */
1732
airtime_is_active(struct airtime_info * air_info,u64 now)1733 static inline bool airtime_is_active(struct airtime_info *air_info, u64 now)
1734 {
1735 return air_info->last_scheduled >= now - AIRTIME_ACTIVE_DURATION;
1736 }
1737
airtime_set_active(struct airtime_sched_info * air_sched,struct airtime_info * air_info,u64 now)1738 static inline void airtime_set_active(struct airtime_sched_info *air_sched,
1739 struct airtime_info *air_info, u64 now)
1740 {
1741 air_info->last_scheduled = now;
1742 air_sched->last_schedule_activity = now;
1743 list_move_tail(&air_info->list, &air_sched->active_list);
1744 }
1745
airtime_catchup_v_t(struct airtime_sched_info * air_sched,u64 v_t,u64 now)1746 static inline bool airtime_catchup_v_t(struct airtime_sched_info *air_sched,
1747 u64 v_t, u64 now)
1748 {
1749 air_sched->v_t = v_t;
1750 return true;
1751 }
1752
init_airtime_info(struct airtime_info * air_info,struct airtime_sched_info * air_sched)1753 static inline void init_airtime_info(struct airtime_info *air_info,
1754 struct airtime_sched_info *air_sched)
1755 {
1756 atomic_set(&air_info->aql_tx_pending, 0);
1757 air_info->aql_limit_low = air_sched->aql_txq_limit_low;
1758 air_info->aql_limit_high = air_sched->aql_txq_limit_high;
1759 airtime_weight_set(air_info, IEEE80211_DEFAULT_AIRTIME_WEIGHT);
1760 INIT_LIST_HEAD(&air_info->list);
1761 }
1762
ieee80211_bssid_match(const u8 * raddr,const u8 * addr)1763 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1764 {
1765 return ether_addr_equal(raddr, addr) ||
1766 is_broadcast_ether_addr(raddr);
1767 }
1768
1769 static inline bool
ieee80211_have_rx_timestamp(struct ieee80211_rx_status * status)1770 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1771 {
1772 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1773 status->flag & RX_FLAG_MACTIME_END);
1774 return !!(status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END |
1775 RX_FLAG_MACTIME_PLCP_START));
1776 }
1777
1778 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1779 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1780
1781 /* This function returns the number of multicast stations connected to this
1782 * interface. It returns -1 if that number is not tracked, that is for netdevs
1783 * not in AP or AP_VLAN mode or when using 4addr.
1784 */
1785 static inline int
ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data * sdata)1786 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1787 {
1788 if (sdata->vif.type == NL80211_IFTYPE_AP)
1789 return atomic_read(&sdata->u.ap.num_mcast_sta);
1790 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1791 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1792 return -1;
1793 }
1794
1795 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1796 struct ieee80211_rx_status *status,
1797 unsigned int mpdu_len,
1798 unsigned int mpdu_offset);
1799 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1800 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1801 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1802 u32 changed);
1803 void ieee80211_configure_filter(struct ieee80211_local *local);
1804 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1805
1806 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1807 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1808 u64 *cookie, gfp_t gfp);
1809
1810 void ieee80211_check_fast_rx(struct sta_info *sta);
1811 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1812 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1813 void ieee80211_clear_fast_rx(struct sta_info *sta);
1814
1815 /* STA code */
1816 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1817 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1818 struct cfg80211_auth_request *req);
1819 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1820 struct cfg80211_assoc_request *req);
1821 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1822 struct cfg80211_deauth_request *req);
1823 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1824 struct cfg80211_disassoc_request *req);
1825 void ieee80211_send_pspoll(struct ieee80211_local *local,
1826 struct ieee80211_sub_if_data *sdata);
1827 void ieee80211_recalc_ps(struct ieee80211_local *local);
1828 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1829 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1830 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1831 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1832 struct sk_buff *skb);
1833 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
1834 struct sk_buff *skb);
1835 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1836 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1837 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1838 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1839 __le16 fc, bool acked);
1840 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1841 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1842 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1843 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
1844 u8 *bssid, u8 reason, bool tx);
1845
1846 /* IBSS code */
1847 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1848 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1849 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1850 const u8 *bssid, const u8 *addr, u32 supp_rates);
1851 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1852 struct cfg80211_ibss_params *params);
1853 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1854 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1855 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1856 struct sk_buff *skb);
1857 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1858 struct cfg80211_csa_settings *csa_settings);
1859 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1860 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1861
1862 /* OCB code */
1863 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1864 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1865 const u8 *bssid, const u8 *addr, u32 supp_rates);
1866 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1867 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1868 struct ocb_setup *setup);
1869 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1870
1871 /* mesh code */
1872 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1873 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1874 struct sk_buff *skb);
1875 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1876 struct cfg80211_csa_settings *csa_settings);
1877 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1878
1879 /* scan/BSS handling */
1880 void ieee80211_scan_work(struct work_struct *work);
1881 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1882 const u8 *ssid, u8 ssid_len,
1883 struct ieee80211_channel **channels,
1884 unsigned int n_channels,
1885 enum nl80211_bss_scan_width scan_width);
1886 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1887 struct cfg80211_scan_request *req);
1888 void ieee80211_scan_cancel(struct ieee80211_local *local);
1889 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1890 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1891
1892 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1893 struct ieee80211_bss *
1894 ieee80211_bss_info_update(struct ieee80211_local *local,
1895 struct ieee80211_rx_status *rx_status,
1896 struct ieee80211_mgmt *mgmt,
1897 size_t len,
1898 struct ieee80211_channel *channel);
1899 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1900 struct ieee80211_bss *bss);
1901
1902 /* scheduled scan handling */
1903 int
1904 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1905 struct cfg80211_sched_scan_request *req);
1906 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1907 struct cfg80211_sched_scan_request *req);
1908 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1909 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1910 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1911
1912 /* off-channel/mgmt-tx */
1913 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1914 void ieee80211_offchannel_return(struct ieee80211_local *local);
1915 void ieee80211_roc_setup(struct ieee80211_local *local);
1916 void ieee80211_start_next_roc(struct ieee80211_local *local);
1917 void ieee80211_roc_purge(struct ieee80211_local *local,
1918 struct ieee80211_sub_if_data *sdata);
1919 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1920 struct ieee80211_channel *chan,
1921 unsigned int duration, u64 *cookie);
1922 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1923 struct wireless_dev *wdev, u64 cookie);
1924 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1925 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1926 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1927 struct wireless_dev *wdev, u64 cookie);
1928
1929 /* channel switch handling */
1930 void ieee80211_csa_finalize_work(struct work_struct *work);
1931 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1932 struct cfg80211_csa_settings *params);
1933
1934 /* color change handling */
1935 void ieee80211_color_change_finalize_work(struct work_struct *work);
1936
1937 /* interface handling */
1938 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
1939 NETIF_F_HW_CSUM | NETIF_F_SG | \
1940 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE)
1941 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM)
1942 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \
1943 MAC80211_SUPPORTED_FEATURES_RX)
1944
1945 int ieee80211_iface_init(void);
1946 void ieee80211_iface_exit(void);
1947 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1948 unsigned char name_assign_type,
1949 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1950 struct vif_params *params);
1951 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1952 enum nl80211_iftype type);
1953 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1954 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1955 u32 ieee80211_idle_off(struct ieee80211_local *local);
1956 void ieee80211_recalc_idle(struct ieee80211_local *local);
1957 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1958 const int offset);
1959 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1960 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1961 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1962 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1963
1964 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1965 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1966 bool update_bss);
1967 void ieee80211_recalc_offload(struct ieee80211_local *local);
1968
ieee80211_sdata_running(struct ieee80211_sub_if_data * sdata)1969 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1970 {
1971 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1972 }
1973
1974 /* tx handling */
1975 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1976 void ieee80211_tx_pending(struct tasklet_struct *t);
1977 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1978 struct net_device *dev);
1979 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1980 struct net_device *dev);
1981 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb,
1982 struct net_device *dev);
1983 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1984 struct net_device *dev,
1985 u32 info_flags,
1986 u32 ctrl_flags,
1987 u64 *cookie);
1988 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1989 struct sk_buff_head *skbs);
1990 struct sk_buff *
1991 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1992 struct sk_buff *skb, u32 info_flags);
1993 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1994 struct ieee80211_supported_band *sband,
1995 int retry_count, int shift, bool send_to_cooked,
1996 struct ieee80211_tx_status *status);
1997
1998 void ieee80211_check_fast_xmit(struct sta_info *sta);
1999 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
2000 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
2001 void ieee80211_clear_fast_xmit(struct sta_info *sta);
2002 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
2003 const u8 *buf, size_t len,
2004 const u8 *dest, __be16 proto, bool unencrypted,
2005 int link_id, u64 *cookie);
2006 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
2007 const u8 *buf, size_t len);
2008 void ieee80211_resort_txq(struct ieee80211_hw *hw,
2009 struct ieee80211_txq *txq);
2010 void ieee80211_unschedule_txq(struct ieee80211_hw *hw,
2011 struct ieee80211_txq *txq,
2012 bool purge);
2013 void ieee80211_update_airtime_weight(struct ieee80211_local *local,
2014 struct airtime_sched_info *air_sched,
2015 u64 now, bool force);
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 sta_info *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 void ieee80211_request_smps_ap_work(struct work_struct *work);
2031 void ieee80211_request_smps_mgd_work(struct work_struct *work);
2032 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
2033 enum ieee80211_smps_mode smps_mode_new);
2034
2035 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
2036 u16 initiator, u16 reason, bool stop);
2037 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
2038 u16 initiator, u16 reason, bool stop);
2039 void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
2040 u8 dialog_token, u16 timeout,
2041 u16 start_seq_num, u16 ba_policy, u16 tid,
2042 u16 buf_size, bool tx, bool auto_seq,
2043 const struct ieee80211_addba_ext_ie *addbaext);
2044 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
2045 enum ieee80211_agg_stop_reason reason);
2046 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
2047 struct sta_info *sta,
2048 struct ieee80211_mgmt *mgmt, size_t len);
2049 void ieee80211_process_addba_resp(struct ieee80211_local *local,
2050 struct sta_info *sta,
2051 struct ieee80211_mgmt *mgmt,
2052 size_t len);
2053 void ieee80211_process_addba_request(struct ieee80211_local *local,
2054 struct sta_info *sta,
2055 struct ieee80211_mgmt *mgmt,
2056 size_t len);
2057
2058 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2059 enum ieee80211_agg_stop_reason reason);
2060 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2061 enum ieee80211_agg_stop_reason reason);
2062 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
2063 struct tid_ampdu_tx *tid_tx);
2064 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
2065 struct tid_ampdu_tx *tid_tx);
2066 void ieee80211_ba_session_work(struct work_struct *work);
2067 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
2068 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
2069
2070 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
2071 enum nl80211_smps_mode
2072 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
2073
2074 /* VHT */
2075 void
2076 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
2077 struct ieee80211_supported_band *sband,
2078 const struct ieee80211_vht_cap *vht_cap_ie,
2079 struct sta_info *sta);
2080 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
2081 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
2082 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
2083 enum ieee80211_sta_rx_bandwidth
2084 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
2085 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
2086 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
2087 struct ieee80211_mgmt *mgmt);
2088 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2089 struct sta_info *sta, u8 opmode,
2090 enum nl80211_band band);
2091 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2092 struct sta_info *sta, u8 opmode,
2093 enum nl80211_band band);
2094 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
2095 struct ieee80211_sta_vht_cap *vht_cap);
2096 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
2097 u16 vht_mask[NL80211_VHT_NSS_MAX]);
2098 enum nl80211_chan_width
2099 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta);
2100
2101 /* HE */
2102 void
2103 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
2104 struct ieee80211_supported_band *sband,
2105 const u8 *he_cap_ie, u8 he_cap_len,
2106 const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
2107 struct sta_info *sta);
2108 void
2109 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
2110 const struct ieee80211_he_spr *he_spr_ie_elem);
2111
2112 void
2113 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
2114 const struct ieee80211_he_operation *he_op_ie_elem);
2115
2116 /* S1G */
2117 void ieee80211_s1g_sta_rate_init(struct sta_info *sta);
2118 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb);
2119 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata,
2120 struct sk_buff *skb);
2121 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata,
2122 struct sk_buff *skb);
2123
2124 /* Spectrum management */
2125 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
2126 struct ieee80211_mgmt *mgmt,
2127 size_t len);
2128 /**
2129 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
2130 * @sdata: the sdata of the interface which has received the frame
2131 * @elems: parsed 802.11 elements received with the frame
2132 * @current_band: indicates the current band
2133 * @vht_cap_info: VHT capabilities of the transmitter
2134 * @sta_flags: contains information about own capabilities and restrictions
2135 * to decide which channel switch announcements can be accepted. Only the
2136 * following subset of &enum ieee80211_sta_flags are evaluated:
2137 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
2138 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
2139 * %IEEE80211_STA_DISABLE_160MHZ.
2140 * @bssid: the currently connected bssid (for reporting)
2141 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
2142 All of them will be filled with if success only.
2143 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
2144 */
2145 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
2146 struct ieee802_11_elems *elems,
2147 enum nl80211_band current_band,
2148 u32 vht_cap_info,
2149 u32 sta_flags, u8 *bssid,
2150 struct ieee80211_csa_ie *csa_ie);
2151
2152 /* Suspend/resume and hw reconfiguration */
2153 int ieee80211_reconfig(struct ieee80211_local *local);
2154 void ieee80211_stop_device(struct ieee80211_local *local);
2155
2156 int __ieee80211_suspend(struct ieee80211_hw *hw,
2157 struct cfg80211_wowlan *wowlan);
2158
__ieee80211_resume(struct ieee80211_hw * hw)2159 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
2160 {
2161 struct ieee80211_local *local = hw_to_local(hw);
2162
2163 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
2164 !test_bit(SCAN_COMPLETED, &local->scanning),
2165 "%s: resume with hardware scan still in progress\n",
2166 wiphy_name(hw->wiphy));
2167
2168 return ieee80211_reconfig(hw_to_local(hw));
2169 }
2170
2171 /* utility functions/constants */
2172 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
2173 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
2174 int rate, int erp, int short_preamble,
2175 int shift);
2176 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
2177 struct ieee80211_tx_queue_params *qparam,
2178 int ac);
2179 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
2180 bool bss_notify, bool enable_qos);
2181 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
2182 struct sta_info *sta, struct sk_buff *skb);
2183
2184 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2185 struct sk_buff *skb, int tid,
2186 enum nl80211_band band);
2187
2188 /* sta_out needs to be checked for ERR_PTR() before using */
2189 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata,
2190 struct sk_buff *skb,
2191 struct sta_info **sta_out);
2192
2193 static inline void
ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid,enum nl80211_band band)2194 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2195 struct sk_buff *skb, int tid,
2196 enum nl80211_band band)
2197 {
2198 rcu_read_lock();
2199 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
2200 rcu_read_unlock();
2201 }
2202
ieee80211_tx_skb_tid(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid)2203 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
2204 struct sk_buff *skb, int tid)
2205 {
2206 struct ieee80211_chanctx_conf *chanctx_conf;
2207
2208 rcu_read_lock();
2209 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2210 if (WARN_ON(!chanctx_conf)) {
2211 rcu_read_unlock();
2212 kfree_skb(skb);
2213 return;
2214 }
2215
2216 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
2217 chanctx_conf->def.chan->band);
2218 rcu_read_unlock();
2219 }
2220
ieee80211_tx_skb(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb)2221 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
2222 struct sk_buff *skb)
2223 {
2224 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
2225 ieee80211_tx_skb_tid(sdata, skb, 7);
2226 }
2227
2228 struct ieee802_11_elems *ieee802_11_parse_elems_crc(const u8 *start, size_t len,
2229 bool action,
2230 u64 filter, u32 crc,
2231 const u8 *transmitter_bssid,
2232 const u8 *bss_bssid);
2233 static inline struct ieee802_11_elems *
ieee802_11_parse_elems(const u8 * start,size_t len,bool action,const u8 * transmitter_bssid,const u8 * bss_bssid)2234 ieee802_11_parse_elems(const u8 *start, size_t len, bool action,
2235 const u8 *transmitter_bssid,
2236 const u8 *bss_bssid)
2237 {
2238 return ieee802_11_parse_elems_crc(start, len, action, 0, 0,
2239 transmitter_bssid, bss_bssid);
2240 }
2241
2242
2243 extern const int ieee802_1d_to_ac[8];
2244
ieee80211_ac_from_tid(int tid)2245 static inline int ieee80211_ac_from_tid(int tid)
2246 {
2247 return ieee802_1d_to_ac[tid & 7];
2248 }
2249
2250 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
2251 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
2252 void ieee80211_dynamic_ps_timer(struct timer_list *t);
2253 void ieee80211_send_nullfunc(struct ieee80211_local *local,
2254 struct ieee80211_sub_if_data *sdata,
2255 bool powersave);
2256 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
2257 struct ieee80211_sub_if_data *sdata);
2258 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2259 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
2260
2261 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
2262 unsigned long queues,
2263 enum queue_stop_reason reason,
2264 bool refcounted);
2265 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
2266 struct ieee80211_sub_if_data *sdata,
2267 enum queue_stop_reason reason);
2268 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
2269 struct ieee80211_sub_if_data *sdata,
2270 enum queue_stop_reason reason);
2271 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
2272 unsigned long queues,
2273 enum queue_stop_reason reason,
2274 bool refcounted);
2275 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
2276 enum queue_stop_reason reason,
2277 bool refcounted);
2278 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
2279 enum queue_stop_reason reason,
2280 bool refcounted);
2281 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
2282 void ieee80211_add_pending_skb(struct ieee80211_local *local,
2283 struct sk_buff *skb);
2284 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
2285 struct sk_buff_head *skbs);
2286 void ieee80211_flush_queues(struct ieee80211_local *local,
2287 struct ieee80211_sub_if_data *sdata, bool drop);
2288 void __ieee80211_flush_queues(struct ieee80211_local *local,
2289 struct ieee80211_sub_if_data *sdata,
2290 unsigned int queues, bool drop);
2291
ieee80211_can_run_worker(struct ieee80211_local * local)2292 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2293 {
2294 /*
2295 * It's unsafe to try to do any work during reconfigure flow.
2296 * When the flow ends the work will be requeued.
2297 */
2298 if (local->in_reconfig)
2299 return false;
2300
2301 /*
2302 * If quiescing is set, we are racing with __ieee80211_suspend.
2303 * __ieee80211_suspend flushes the workers after setting quiescing,
2304 * and we check quiescing / suspended before enqueing new workers.
2305 * We should abort the worker to avoid the races below.
2306 */
2307 if (local->quiescing)
2308 return false;
2309
2310 /*
2311 * We might already be suspended if the following scenario occurs:
2312 * __ieee80211_suspend Control path
2313 *
2314 * if (local->quiescing)
2315 * return;
2316 * local->quiescing = true;
2317 * flush_workqueue();
2318 * queue_work(...);
2319 * local->suspended = true;
2320 * local->quiescing = false;
2321 * worker starts running...
2322 */
2323 if (local->suspended)
2324 return false;
2325
2326 return true;
2327 }
2328
2329 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2330 void ieee80211_txq_set_params(struct ieee80211_local *local);
2331 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2332 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2333 struct sta_info *sta,
2334 struct txq_info *txq, int tid);
2335 void ieee80211_txq_purge(struct ieee80211_local *local,
2336 struct txq_info *txqi);
2337 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2338 struct ieee80211_sub_if_data *sdata);
2339 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2340 struct txq_info *txqi);
2341 void ieee80211_wake_txqs(struct tasklet_struct *t);
2342 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2343 u16 transaction, u16 auth_alg, u16 status,
2344 const u8 *extra, size_t extra_len, const u8 *bssid,
2345 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2346 u32 tx_flags);
2347 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2348 const u8 *da, const u8 *bssid,
2349 u16 stype, u16 reason,
2350 bool send_frame, u8 *frame_buf);
2351
2352 enum {
2353 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
2354 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
2355 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
2356 };
2357
2358 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2359 size_t buffer_len,
2360 struct ieee80211_scan_ies *ie_desc,
2361 const u8 *ie, size_t ie_len,
2362 u8 bands_used, u32 *rate_masks,
2363 struct cfg80211_chan_def *chandef,
2364 u32 flags);
2365 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2366 const u8 *src, const u8 *dst,
2367 u32 ratemask,
2368 struct ieee80211_channel *chan,
2369 const u8 *ssid, size_t ssid_len,
2370 const u8 *ie, size_t ie_len,
2371 u32 flags);
2372 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2373 struct ieee802_11_elems *elems,
2374 enum nl80211_band band, u32 *basic_rates);
2375 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2376 enum ieee80211_smps_mode smps_mode);
2377 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
2378 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
2379
2380 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2381 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2382 u16 cap);
2383 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2384 const struct cfg80211_chan_def *chandef,
2385 u16 prot_mode, bool rifs_mode);
2386 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2387 const struct cfg80211_chan_def *chandef);
2388 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2389 u32 cap);
2390 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2391 const struct cfg80211_chan_def *chandef);
2392 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2393 u8 *ieee80211_ie_build_he_cap(u32 disable_flags, u8 *pos,
2394 const struct ieee80211_sta_he_cap *he_cap,
2395 u8 *end);
2396 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2397 struct sk_buff *skb);
2398 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef);
2399 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2400 const struct ieee80211_supported_band *sband,
2401 const u8 *srates, int srates_len, u32 *rates);
2402 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2403 struct sk_buff *skb, bool need_basic,
2404 enum nl80211_band band);
2405 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2406 struct sk_buff *skb, bool need_basic,
2407 enum nl80211_band band);
2408 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2409 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
2410 struct ieee80211_sta_s1g_cap *caps,
2411 struct sk_buff *skb);
2412 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
2413 struct sk_buff *skb);
2414
2415 /* channel management */
2416 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2417 struct cfg80211_chan_def *chandef);
2418 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
2419 const struct ieee80211_vht_operation *oper,
2420 const struct ieee80211_ht_operation *htop,
2421 struct cfg80211_chan_def *chandef);
2422 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
2423 const struct ieee80211_he_operation *he_oper,
2424 struct cfg80211_chan_def *chandef);
2425 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
2426 struct cfg80211_chan_def *chandef);
2427 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2428
2429 int __must_check
2430 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
2431 const struct cfg80211_chan_def *chandef,
2432 enum ieee80211_chanctx_mode mode);
2433 int __must_check
2434 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
2435 const struct cfg80211_chan_def *chandef,
2436 enum ieee80211_chanctx_mode mode,
2437 bool radar_required);
2438 int __must_check
2439 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2440 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2441
2442 int __must_check
2443 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2444 const struct cfg80211_chan_def *chandef,
2445 u32 *changed);
2446 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2447 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2448 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2449 bool clear);
2450 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2451 struct ieee80211_chanctx *ctx);
2452
2453 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2454 struct ieee80211_chanctx *chanctx);
2455 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2456 struct ieee80211_chanctx *ctx);
2457 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2458
2459 void ieee80211_dfs_cac_timer(unsigned long data);
2460 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2461 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2462 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2463 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2464 struct cfg80211_csa_settings *csa_settings);
2465
2466 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2467 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2468 const struct ieee80211_cipher_scheme *
2469 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2470 enum nl80211_iftype iftype);
2471 int ieee80211_cs_headroom(struct ieee80211_local *local,
2472 struct cfg80211_crypto_settings *crypto,
2473 enum nl80211_iftype iftype);
2474 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2475 struct ieee80211_sub_if_data *sdata);
2476 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2477 const struct cfg80211_chan_def *chandef,
2478 enum ieee80211_chanctx_mode chanmode,
2479 u8 radar_detect);
2480 int ieee80211_max_num_channels(struct ieee80211_local *local);
2481 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2482 struct ieee80211_chanctx *ctx);
2483
2484 /* TDLS */
2485 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2486 const u8 *peer, u8 action_code, u8 dialog_token,
2487 u16 status_code, u32 peer_capability,
2488 bool initiator, const u8 *extra_ies,
2489 size_t extra_ies_len);
2490 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2491 const u8 *peer, enum nl80211_tdls_operation oper);
2492 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2493 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2494 const u8 *addr, u8 oper_class,
2495 struct cfg80211_chan_def *chandef);
2496 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2497 struct net_device *dev,
2498 const u8 *addr);
2499 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2500 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2501 const u8 *peer, u16 reason);
2502 void
2503 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata,
2504 struct sk_buff *skb);
2505
2506
2507 const char *ieee80211_get_reason_code_string(u16 reason_code);
2508 u16 ieee80211_encode_usf(int val);
2509 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
2510 enum nl80211_iftype type);
2511
2512 extern const struct ethtool_ops ieee80211_ethtool_ops;
2513
2514 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw,
2515 struct ieee80211_vif *vif,
2516 struct ieee80211_sta *pubsta,
2517 int len, bool ampdu);
2518 #ifdef CONFIG_MAC80211_NOINLINE
2519 #define debug_noinline noinline
2520 #else
2521 #define debug_noinline
2522 #endif
2523
2524 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache);
2525 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache);
2526
2527 #endif /* IEEE80211_I_H */
2528