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 cfg80211_mbssid_elems *mbssid_ies;
261 struct rcu_head rcu_head;
262 };
263
264 struct probe_resp {
265 struct rcu_head rcu_head;
266 int len;
267 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
268 u8 data[];
269 };
270
271 struct fils_discovery_data {
272 struct rcu_head rcu_head;
273 int len;
274 u8 data[];
275 };
276
277 struct unsol_bcast_probe_resp_data {
278 struct rcu_head rcu_head;
279 int len;
280 u8 data[];
281 };
282
283 struct ps_data {
284 /* yes, this looks ugly, but guarantees that we can later use
285 * bitmap_empty :)
286 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
287 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
288 __aligned(__alignof__(unsigned long));
289 struct sk_buff_head bc_buf;
290 atomic_t num_sta_ps; /* number of stations in PS mode */
291 int dtim_count;
292 bool dtim_bc_mc;
293 };
294
295 struct ieee80211_if_ap {
296 struct beacon_data __rcu *beacon;
297 struct probe_resp __rcu *probe_resp;
298 struct fils_discovery_data __rcu *fils_discovery;
299 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp;
300
301 /* to be used after channel switch. */
302 struct cfg80211_beacon_data *next_beacon;
303 struct list_head vlans; /* write-protected with RTNL and local->mtx */
304
305 struct ps_data ps;
306 atomic_t num_mcast_sta; /* number of stations receiving multicast */
307
308 bool multicast_to_unicast;
309 };
310
311 struct ieee80211_if_vlan {
312 struct list_head list; /* write-protected with RTNL and local->mtx */
313
314 /* used for all tx if the VLAN is configured to 4-addr mode */
315 struct sta_info __rcu *sta;
316 atomic_t num_mcast_sta; /* number of stations receiving multicast */
317 };
318
319 struct mesh_stats {
320 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
321 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
322 __u32 fwded_frames; /* Mesh total forwarded frames */
323 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
324 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
325 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
326 };
327
328 #define PREQ_Q_F_START 0x1
329 #define PREQ_Q_F_REFRESH 0x2
330 struct mesh_preq_queue {
331 struct list_head list;
332 u8 dst[ETH_ALEN];
333 u8 flags;
334 };
335
336 struct ieee80211_roc_work {
337 struct list_head list;
338
339 struct ieee80211_sub_if_data *sdata;
340
341 struct ieee80211_channel *chan;
342
343 bool started, abort, hw_begun, notified;
344 bool on_channel;
345
346 unsigned long start_time;
347
348 u32 duration, req_duration;
349 struct sk_buff *frame;
350 u64 cookie, mgmt_tx_cookie;
351 enum ieee80211_roc_type type;
352 };
353
354 /* flags used in struct ieee80211_if_managed.flags */
355 enum ieee80211_sta_flags {
356 IEEE80211_STA_CONNECTION_POLL = BIT(1),
357 IEEE80211_STA_CONTROL_PORT = BIT(2),
358 IEEE80211_STA_DISABLE_HT = BIT(4),
359 IEEE80211_STA_MFP_ENABLED = BIT(6),
360 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
361 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
362 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
363 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
364 IEEE80211_STA_DISABLE_VHT = BIT(11),
365 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
366 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
367 IEEE80211_STA_DISABLE_WMM = BIT(14),
368 IEEE80211_STA_ENABLE_RRM = BIT(15),
369 IEEE80211_STA_DISABLE_HE = BIT(16),
370 };
371
372 struct ieee80211_mgd_auth_data {
373 struct cfg80211_bss *bss;
374 unsigned long timeout;
375 int tries;
376 u16 algorithm, expected_transaction;
377
378 u8 key[WLAN_KEY_LEN_WEP104];
379 u8 key_len, key_idx;
380 bool done, waiting;
381 bool peer_confirmed;
382 bool timeout_started;
383
384 u16 sae_trans, sae_status;
385 size_t data_len;
386 u8 data[];
387 };
388
389 struct ieee80211_mgd_assoc_data {
390 struct cfg80211_bss *bss;
391 const u8 *supp_rates;
392
393 unsigned long timeout;
394 int tries;
395
396 u16 capability;
397 u8 prev_bssid[ETH_ALEN];
398 u8 ssid[IEEE80211_MAX_SSID_LEN];
399 u8 ssid_len;
400 u8 supp_rates_len;
401 bool wmm, uapsd;
402 bool need_beacon;
403 bool synced;
404 bool timeout_started;
405
406 u8 ap_ht_param;
407
408 struct ieee80211_vht_cap ap_vht_cap;
409
410 u8 fils_nonces[2 * FILS_NONCE_LEN];
411 u8 fils_kek[FILS_MAX_KEK_LEN];
412 size_t fils_kek_len;
413
414 size_t ie_len;
415 u8 ie[];
416 };
417
418 struct ieee80211_sta_tx_tspec {
419 /* timestamp of the first packet in the time slice */
420 unsigned long time_slice_start;
421
422 u32 admitted_time; /* in usecs, unlike over the air */
423 u8 tsid;
424 s8 up; /* signed to be able to invalidate with -1 during teardown */
425
426 /* consumed TX time in microseconds in the time slice */
427 u32 consumed_tx_time;
428 enum {
429 TX_TSPEC_ACTION_NONE = 0,
430 TX_TSPEC_ACTION_DOWNGRADE,
431 TX_TSPEC_ACTION_STOP_DOWNGRADE,
432 } action;
433 bool downgraded;
434 };
435
436 DECLARE_EWMA(beacon_signal, 4, 4)
437
438 struct ieee80211_if_managed {
439 struct timer_list timer;
440 struct timer_list conn_mon_timer;
441 struct timer_list bcn_mon_timer;
442 struct timer_list chswitch_timer;
443 struct work_struct monitor_work;
444 struct work_struct chswitch_work;
445 struct work_struct beacon_connection_loss_work;
446 struct work_struct csa_connection_drop_work;
447
448 unsigned long beacon_timeout;
449 unsigned long probe_timeout;
450 int probe_send_count;
451 bool nullfunc_failed;
452 u8 connection_loss:1,
453 driver_disconnect:1,
454 reconnect:1;
455
456 struct cfg80211_bss *associated;
457 struct ieee80211_mgd_auth_data *auth_data;
458 struct ieee80211_mgd_assoc_data *assoc_data;
459
460 u8 bssid[ETH_ALEN] __aligned(2);
461
462 bool powersave; /* powersave requested for this iface */
463 bool broken_ap; /* AP is broken -- turn off powersave */
464 bool have_beacon;
465 u8 dtim_period;
466 enum ieee80211_smps_mode req_smps, /* requested smps mode */
467 driver_smps_mode; /* smps mode request */
468
469 struct work_struct request_smps_work;
470
471 unsigned int flags;
472
473 bool csa_waiting_bcn;
474 bool csa_ignored_same_chan;
475
476 bool beacon_crc_valid;
477 u32 beacon_crc;
478
479 bool status_acked;
480 bool status_received;
481 __le16 status_fc;
482
483 enum {
484 IEEE80211_MFP_DISABLED,
485 IEEE80211_MFP_OPTIONAL,
486 IEEE80211_MFP_REQUIRED
487 } mfp; /* management frame protection */
488
489 /*
490 * Bitmask of enabled u-apsd queues,
491 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
492 * to take effect.
493 */
494 unsigned int uapsd_queues;
495
496 /*
497 * Maximum number of buffered frames AP can deliver during a
498 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
499 * Needs a new association to take effect.
500 */
501 unsigned int uapsd_max_sp_len;
502
503 int wmm_last_param_set;
504 int mu_edca_last_param_set;
505
506 u8 use_4addr;
507
508 s16 p2p_noa_index;
509
510 struct ewma_beacon_signal ave_beacon_signal;
511
512 /*
513 * Number of Beacon frames used in ave_beacon_signal. This can be used
514 * to avoid generating less reliable cqm events that would be based
515 * only on couple of received frames.
516 */
517 unsigned int count_beacon_signal;
518
519 /* Number of times beacon loss was invoked. */
520 unsigned int beacon_loss_count;
521
522 /*
523 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
524 * that triggered a cqm event. 0 indicates that no event has been
525 * generated for the current association.
526 */
527 int last_cqm_event_signal;
528
529 /*
530 * State variables for keeping track of RSSI of the AP currently
531 * connected to and informing driver when RSSI has gone
532 * below/above a certain threshold.
533 */
534 int rssi_min_thold, rssi_max_thold;
535 int last_ave_beacon_signal;
536
537 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
538 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
539 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
540 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
541 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */
542 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */
543
544 /* TDLS support */
545 u8 tdls_peer[ETH_ALEN] __aligned(2);
546 struct delayed_work tdls_peer_del_work;
547 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
548 struct sk_buff *teardown_skb; /* A copy to send through the AP */
549 spinlock_t teardown_lock; /* To lock changing teardown_skb */
550 bool tdls_chan_switch_prohibited;
551 bool tdls_wider_bw_prohibited;
552
553 /* WMM-AC TSPEC support */
554 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
555 /* Use a separate work struct so that we can do something here
556 * while the sdata->work is flushing the queues, for example.
557 * otherwise, in scenarios where we hardly get any traffic out
558 * on the BE queue, but there's a lot of VO traffic, we might
559 * get stuck in a downgraded situation and flush takes forever.
560 */
561 struct delayed_work tx_tspec_wk;
562
563 /* Information elements from the last transmitted (Re)Association
564 * Request frame.
565 */
566 u8 *assoc_req_ies;
567 size_t assoc_req_ies_len;
568 };
569
570 struct ieee80211_if_ibss {
571 struct timer_list timer;
572 struct work_struct csa_connection_drop_work;
573
574 unsigned long last_scan_completed;
575
576 u32 basic_rates;
577
578 bool fixed_bssid;
579 bool fixed_channel;
580 bool privacy;
581
582 bool control_port;
583 bool userspace_handles_dfs;
584
585 u8 bssid[ETH_ALEN] __aligned(2);
586 u8 ssid[IEEE80211_MAX_SSID_LEN];
587 u8 ssid_len, ie_len;
588 u8 *ie;
589 struct cfg80211_chan_def chandef;
590
591 unsigned long ibss_join_req;
592 /* probe response/beacon for IBSS */
593 struct beacon_data __rcu *presp;
594
595 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
596 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
597
598 spinlock_t incomplete_lock;
599 struct list_head incomplete_stations;
600
601 enum {
602 IEEE80211_IBSS_MLME_SEARCH,
603 IEEE80211_IBSS_MLME_JOINED,
604 } state;
605 };
606
607 /**
608 * struct ieee80211_if_ocb - OCB mode state
609 *
610 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
611 * @wrkq_flags: OCB deferred task action
612 * @incomplete_lock: delayed STA insertion lock
613 * @incomplete_stations: list of STAs waiting for delayed insertion
614 * @joined: indication if the interface is connected to an OCB network
615 */
616 struct ieee80211_if_ocb {
617 struct timer_list housekeeping_timer;
618 unsigned long wrkq_flags;
619
620 spinlock_t incomplete_lock;
621 struct list_head incomplete_stations;
622
623 bool joined;
624 };
625
626 /**
627 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
628 *
629 * these declarations define the interface, which enables
630 * vendor-specific mesh synchronization
631 *
632 */
633 struct ieee802_11_elems;
634 struct ieee80211_mesh_sync_ops {
635 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, u16 stype,
636 struct ieee80211_mgmt *mgmt, unsigned int len,
637 const struct ieee80211_meshconf_ie *mesh_cfg,
638 struct ieee80211_rx_status *rx_status);
639
640 /* should be called with beacon_data under RCU read lock */
641 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
642 struct beacon_data *beacon);
643 /* add other framework functions here */
644 };
645
646 struct mesh_csa_settings {
647 struct rcu_head rcu_head;
648 struct cfg80211_csa_settings settings;
649 };
650
651 /**
652 * struct mesh_table
653 *
654 * @known_gates: list of known mesh gates and their mpaths by the station. The
655 * gate's mpath may or may not be resolved and active.
656 * @gates_lock: protects updates to known_gates
657 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr
658 * @walk_head: linked list containing all mesh_path objects
659 * @walk_lock: lock protecting walk_head
660 * @entries: number of entries in the table
661 */
662 struct mesh_table {
663 struct hlist_head known_gates;
664 spinlock_t gates_lock;
665 struct rhashtable rhead;
666 struct hlist_head walk_head;
667 spinlock_t walk_lock;
668 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */
669 };
670
671 struct ieee80211_if_mesh {
672 struct timer_list housekeeping_timer;
673 struct timer_list mesh_path_timer;
674 struct timer_list mesh_path_root_timer;
675
676 unsigned long wrkq_flags;
677 unsigned long mbss_changed;
678
679 bool userspace_handles_dfs;
680
681 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
682 size_t mesh_id_len;
683 /* Active Path Selection Protocol Identifier */
684 u8 mesh_pp_id;
685 /* Active Path Selection Metric Identifier */
686 u8 mesh_pm_id;
687 /* Congestion Control Mode Identifier */
688 u8 mesh_cc_id;
689 /* Synchronization Protocol Identifier */
690 u8 mesh_sp_id;
691 /* Authentication Protocol Identifier */
692 u8 mesh_auth_id;
693 /* Local mesh Sequence Number */
694 u32 sn;
695 /* Last used PREQ ID */
696 u32 preq_id;
697 atomic_t mpaths;
698 /* Timestamp of last SN update */
699 unsigned long last_sn_update;
700 /* Time when it's ok to send next PERR */
701 unsigned long next_perr;
702 /* Timestamp of last PREQ sent */
703 unsigned long last_preq;
704 struct mesh_rmc *rmc;
705 spinlock_t mesh_preq_queue_lock;
706 struct mesh_preq_queue preq_queue;
707 int preq_queue_len;
708 struct mesh_stats mshstats;
709 struct mesh_config mshcfg;
710 atomic_t estab_plinks;
711 u32 mesh_seqnum;
712 bool accepting_plinks;
713 int num_gates;
714 struct beacon_data __rcu *beacon;
715 const u8 *ie;
716 u8 ie_len;
717 enum {
718 IEEE80211_MESH_SEC_NONE = 0x0,
719 IEEE80211_MESH_SEC_AUTHED = 0x1,
720 IEEE80211_MESH_SEC_SECURED = 0x2,
721 } security;
722 bool user_mpm;
723 /* Extensible Synchronization Framework */
724 const struct ieee80211_mesh_sync_ops *sync_ops;
725 s64 sync_offset_clockdrift_max;
726 spinlock_t sync_offset_lock;
727 /* mesh power save */
728 enum nl80211_mesh_power_mode nonpeer_pm;
729 int ps_peers_light_sleep;
730 int ps_peers_deep_sleep;
731 struct ps_data ps;
732 /* Channel Switching Support */
733 struct mesh_csa_settings __rcu *csa;
734 enum {
735 IEEE80211_MESH_CSA_ROLE_NONE,
736 IEEE80211_MESH_CSA_ROLE_INIT,
737 IEEE80211_MESH_CSA_ROLE_REPEATER,
738 } csa_role;
739 u8 chsw_ttl;
740 u16 pre_value;
741
742 /* offset from skb->data while building IE */
743 int meshconf_offset;
744
745 struct mesh_table mesh_paths;
746 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */
747 int mesh_paths_generation;
748 int mpp_paths_generation;
749 };
750
751 #ifdef CONFIG_MAC80211_MESH
752 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
753 do { (msh)->mshstats.name++; } while (0)
754 #else
755 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
756 do { } while (0)
757 #endif
758
759 /**
760 * enum ieee80211_sub_if_data_flags - virtual interface flags
761 *
762 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
763 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
764 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
765 * associated stations and deliver multicast frames both
766 * back to wireless media and to the local net stack.
767 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
768 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
769 */
770 enum ieee80211_sub_if_data_flags {
771 IEEE80211_SDATA_ALLMULTI = BIT(0),
772 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
773 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
774 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
775 IEEE80211_SDATA_IN_DRIVER = BIT(5),
776 };
777
778 /**
779 * enum ieee80211_sdata_state_bits - virtual interface state bits
780 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
781 * mirrors netif_running() but is separate for interface type
782 * change handling while the interface is up
783 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
784 * mode, so queues are stopped
785 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
786 * to offchannel, reset when offchannel returns
787 */
788 enum ieee80211_sdata_state_bits {
789 SDATA_STATE_RUNNING,
790 SDATA_STATE_OFFCHANNEL,
791 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
792 };
793
794 /**
795 * enum ieee80211_chanctx_mode - channel context configuration mode
796 *
797 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
798 * multiple interfaces
799 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
800 * only by a single interface. This can be used for example for
801 * non-fixed channel IBSS.
802 */
803 enum ieee80211_chanctx_mode {
804 IEEE80211_CHANCTX_SHARED,
805 IEEE80211_CHANCTX_EXCLUSIVE
806 };
807
808 /**
809 * enum ieee80211_chanctx_replace_state - channel context replacement state
810 *
811 * This is used for channel context in-place reservations that require channel
812 * context switch/swap.
813 *
814 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
815 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
816 * by a (not yet registered) channel context pointed by %replace_ctx.
817 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
818 * replaces an existing channel context pointed to by %replace_ctx.
819 */
820 enum ieee80211_chanctx_replace_state {
821 IEEE80211_CHANCTX_REPLACE_NONE,
822 IEEE80211_CHANCTX_WILL_BE_REPLACED,
823 IEEE80211_CHANCTX_REPLACES_OTHER,
824 };
825
826 struct ieee80211_chanctx {
827 struct list_head list;
828 struct rcu_head rcu_head;
829
830 struct list_head assigned_vifs;
831 struct list_head reserved_vifs;
832
833 enum ieee80211_chanctx_replace_state replace_state;
834 struct ieee80211_chanctx *replace_ctx;
835
836 enum ieee80211_chanctx_mode mode;
837 bool driver_present;
838
839 struct ieee80211_chanctx_conf conf;
840 };
841
842 struct mac80211_qos_map {
843 struct cfg80211_qos_map qos_map;
844 struct rcu_head rcu_head;
845 };
846
847 enum txq_info_flags {
848 IEEE80211_TXQ_STOP,
849 IEEE80211_TXQ_AMPDU,
850 IEEE80211_TXQ_NO_AMSDU,
851 IEEE80211_TXQ_STOP_NETIF_TX,
852 };
853
854 /**
855 * struct txq_info - per tid queue
856 *
857 * @tin: contains packets split into multiple flows
858 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
859 * a fq_flow which is already owned by a different tin
860 * @def_cvars: codel vars for @def_flow
861 * @schedule_order: used with ieee80211_local->active_txqs
862 * @frags: used to keep fragments created after dequeue
863 */
864 struct txq_info {
865 struct fq_tin tin;
866 struct codel_vars def_cvars;
867 struct codel_stats cstats;
868 struct rb_node schedule_order;
869
870 struct sk_buff_head frags;
871 unsigned long flags;
872
873 /* keep last! */
874 struct ieee80211_txq txq;
875 };
876
877 struct ieee80211_if_mntr {
878 u32 flags;
879 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
880
881 struct list_head list;
882 };
883
884 /**
885 * struct ieee80211_if_nan - NAN state
886 *
887 * @conf: current NAN configuration
888 * @func_ids: a bitmap of available instance_id's
889 */
890 struct ieee80211_if_nan {
891 struct cfg80211_nan_conf conf;
892
893 /* protects function_inst_ids */
894 spinlock_t func_lock;
895 struct idr function_inst_ids;
896 };
897
898 struct ieee80211_sub_if_data {
899 struct list_head list;
900
901 struct wireless_dev wdev;
902
903 /* keys */
904 struct list_head key_list;
905
906 /* count for keys needing tailroom space allocation */
907 int crypto_tx_tailroom_needed_cnt;
908 int crypto_tx_tailroom_pending_dec;
909 struct delayed_work dec_tailroom_needed_wk;
910
911 struct net_device *dev;
912 struct ieee80211_local *local;
913
914 unsigned int flags;
915
916 unsigned long state;
917
918 char name[IFNAMSIZ];
919
920 struct ieee80211_fragment_cache frags;
921
922 /* TID bitmap for NoAck policy */
923 u16 noack_map;
924
925 /* bit field of ACM bits (BIT(802.1D tag)) */
926 u8 wmm_acm;
927
928 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS +
929 NUM_DEFAULT_MGMT_KEYS +
930 NUM_DEFAULT_BEACON_KEYS];
931 struct ieee80211_key __rcu *default_unicast_key;
932 struct ieee80211_key __rcu *default_multicast_key;
933 struct ieee80211_key __rcu *default_mgmt_key;
934 struct ieee80211_key __rcu *default_beacon_key;
935
936 u16 sequence_number;
937 __be16 control_port_protocol;
938 bool control_port_no_encrypt;
939 bool control_port_no_preauth;
940 bool control_port_over_nl80211;
941 int encrypt_headroom;
942
943 atomic_t num_tx_queued;
944 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
945 struct mac80211_qos_map __rcu *qos_map;
946
947 struct airtime_info airtime[IEEE80211_NUM_ACS];
948
949 struct work_struct csa_finalize_work;
950 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
951 struct cfg80211_chan_def csa_chandef;
952
953 struct work_struct color_change_finalize_work;
954
955 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
956 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
957
958 /* context reservation -- protected with chanctx_mtx */
959 struct ieee80211_chanctx *reserved_chanctx;
960 struct cfg80211_chan_def reserved_chandef;
961 bool reserved_radar_required;
962 bool reserved_ready;
963
964 /* used to reconfigure hardware SM PS */
965 struct work_struct recalc_smps;
966
967 struct work_struct work;
968 struct sk_buff_head skb_queue;
969 struct sk_buff_head status_queue;
970
971 u8 needed_rx_chains;
972 enum ieee80211_smps_mode smps_mode;
973
974 int user_power_level; /* in dBm */
975 int ap_power_level; /* in dBm */
976
977 bool radar_required;
978 struct delayed_work dfs_cac_timer_work;
979
980 /*
981 * AP this belongs to: self in AP mode and
982 * corresponding AP in VLAN mode, NULL for
983 * all others (might be needed later in IBSS)
984 */
985 struct ieee80211_if_ap *bss;
986
987 /* bitmap of allowed (non-MCS) rate indexes for rate control */
988 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
989
990 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
991 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
992
993 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
994 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
995
996 /* Beacon frame (non-MCS) rate (as a bitmap) */
997 u32 beacon_rateidx_mask[NUM_NL80211_BANDS];
998 bool beacon_rate_set;
999
1000 union {
1001 struct ieee80211_if_ap ap;
1002 struct ieee80211_if_vlan vlan;
1003 struct ieee80211_if_managed mgd;
1004 struct ieee80211_if_ibss ibss;
1005 struct ieee80211_if_mesh mesh;
1006 struct ieee80211_if_ocb ocb;
1007 struct ieee80211_if_mntr mntr;
1008 struct ieee80211_if_nan nan;
1009 } u;
1010
1011 #ifdef CONFIG_MAC80211_DEBUGFS
1012 struct {
1013 struct dentry *subdir_stations;
1014 struct dentry *default_unicast_key;
1015 struct dentry *default_multicast_key;
1016 struct dentry *default_mgmt_key;
1017 struct dentry *default_beacon_key;
1018 } debugfs;
1019 #endif
1020
1021 /* must be last, dynamically sized area in this! */
1022 struct ieee80211_vif vif;
1023 };
1024
1025 static inline
vif_to_sdata(struct ieee80211_vif * p)1026 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
1027 {
1028 return container_of(p, struct ieee80211_sub_if_data, vif);
1029 }
1030
sdata_lock(struct ieee80211_sub_if_data * sdata)1031 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
1032 __acquires(&sdata->wdev.mtx)
1033 {
1034 mutex_lock(&sdata->wdev.mtx);
1035 __acquire(&sdata->wdev.mtx);
1036 }
1037
sdata_unlock(struct ieee80211_sub_if_data * sdata)1038 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
1039 __releases(&sdata->wdev.mtx)
1040 {
1041 mutex_unlock(&sdata->wdev.mtx);
1042 __release(&sdata->wdev.mtx);
1043 }
1044
1045 #define sdata_dereference(p, sdata) \
1046 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
1047
1048 static inline void
sdata_assert_lock(struct ieee80211_sub_if_data * sdata)1049 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
1050 {
1051 lockdep_assert_held(&sdata->wdev.mtx);
1052 }
1053
1054 static inline int
ieee80211_chandef_get_shift(struct cfg80211_chan_def * chandef)1055 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1056 {
1057 switch (chandef->width) {
1058 case NL80211_CHAN_WIDTH_5:
1059 return 2;
1060 case NL80211_CHAN_WIDTH_10:
1061 return 1;
1062 default:
1063 return 0;
1064 }
1065 }
1066
1067 static inline int
ieee80211_vif_get_shift(struct ieee80211_vif * vif)1068 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1069 {
1070 struct ieee80211_chanctx_conf *chanctx_conf;
1071 int shift = 0;
1072
1073 rcu_read_lock();
1074 chanctx_conf = rcu_dereference(vif->chanctx_conf);
1075 if (chanctx_conf)
1076 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1077 rcu_read_unlock();
1078
1079 return shift;
1080 }
1081
1082 static inline int
ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems * elems)1083 ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems)
1084 {
1085 int i, len = 0;
1086
1087 if (!elems)
1088 return 0;
1089
1090 for (i = 0; i < elems->cnt; i++)
1091 len += elems->elem[i].len;
1092
1093 return len;
1094 }
1095
1096 enum {
1097 IEEE80211_RX_MSG = 1,
1098 IEEE80211_TX_STATUS_MSG = 2,
1099 };
1100
1101 enum queue_stop_reason {
1102 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1103 IEEE80211_QUEUE_STOP_REASON_PS,
1104 IEEE80211_QUEUE_STOP_REASON_CSA,
1105 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1106 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1107 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1108 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1109 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1110 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1111 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1112 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE,
1113
1114 IEEE80211_QUEUE_STOP_REASONS,
1115 };
1116
1117 #ifdef CONFIG_MAC80211_LEDS
1118 struct tpt_led_trigger {
1119 char name[32];
1120 const struct ieee80211_tpt_blink *blink_table;
1121 unsigned int blink_table_len;
1122 struct timer_list timer;
1123 struct ieee80211_local *local;
1124 unsigned long prev_traffic;
1125 unsigned long tx_bytes, rx_bytes;
1126 unsigned int active, want;
1127 bool running;
1128 };
1129 #endif
1130
1131 /**
1132 * mac80211 scan flags - currently active scan mode
1133 *
1134 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1135 * well be on the operating channel
1136 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1137 * determine if we are on the operating channel or not
1138 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1139 * channel. This should not interrupt normal traffic.
1140 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1141 * that the scan completed.
1142 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1143 * a scan complete for an aborted scan.
1144 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1145 * cancelled.
1146 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR
1147 * and could send a probe request after receiving a beacon.
1148 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request
1149 */
1150 enum {
1151 SCAN_SW_SCANNING,
1152 SCAN_HW_SCANNING,
1153 SCAN_ONCHANNEL_SCANNING,
1154 SCAN_COMPLETED,
1155 SCAN_ABORTED,
1156 SCAN_HW_CANCELLED,
1157 SCAN_BEACON_WAIT,
1158 SCAN_BEACON_DONE,
1159 };
1160
1161 /**
1162 * enum mac80211_scan_state - scan state machine states
1163 *
1164 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1165 * determines if we should keep on scanning or switch back to the
1166 * operating channel
1167 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1168 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1169 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1170 * send out data
1171 * @SCAN_RESUME: Resume the scan and scan the next channel
1172 * @SCAN_ABORT: Abort the scan and go back to operating channel
1173 */
1174 enum mac80211_scan_state {
1175 SCAN_DECISION,
1176 SCAN_SET_CHANNEL,
1177 SCAN_SEND_PROBE,
1178 SCAN_SUSPEND,
1179 SCAN_RESUME,
1180 SCAN_ABORT,
1181 };
1182
1183 /**
1184 * struct airtime_sched_info - state used for airtime scheduling and AQL
1185 *
1186 * @lock: spinlock that protects all the fields in this struct
1187 * @active_txqs: rbtree of currently backlogged queues, sorted by virtual time
1188 * @schedule_pos: the current position maintained while a driver walks the tree
1189 * with ieee80211_next_txq()
1190 * @active_list: list of struct airtime_info structs that were active within
1191 * the last AIRTIME_ACTIVE_DURATION (100 ms), used to compute
1192 * weight_sum
1193 * @last_weight_update: used for rate limiting walking active_list
1194 * @last_schedule_time: tracks the last time a transmission was scheduled; used
1195 * for catching up v_t if no stations are eligible for
1196 * transmission.
1197 * @v_t: global virtual time; queues with v_t < this are eligible for
1198 * transmission
1199 * @weight_sum: total sum of all active stations used for dividing airtime
1200 * @weight_sum_reciprocal: reciprocal of weight_sum (to avoid divisions in fast
1201 * path - see comment above
1202 * IEEE80211_RECIPROCAL_DIVISOR_64)
1203 * @aql_txq_limit_low: AQL limit when total outstanding airtime
1204 * is < IEEE80211_AQL_THRESHOLD
1205 * @aql_txq_limit_high: AQL limit when total outstanding airtime
1206 * is > IEEE80211_AQL_THRESHOLD
1207 */
1208 struct airtime_sched_info {
1209 spinlock_t lock;
1210 struct rb_root_cached active_txqs;
1211 struct rb_node *schedule_pos;
1212 struct list_head active_list;
1213 u64 last_weight_update;
1214 u64 last_schedule_activity;
1215 u64 v_t;
1216 u64 weight_sum;
1217 u64 weight_sum_reciprocal;
1218 u32 aql_txq_limit_low;
1219 u32 aql_txq_limit_high;
1220 };
1221 DECLARE_STATIC_KEY_FALSE(aql_disable);
1222
1223 struct ieee80211_local {
1224 /* embed the driver visible part.
1225 * don't cast (use the static inlines below), but we keep
1226 * it first anyway so they become a no-op */
1227 struct ieee80211_hw hw;
1228
1229 struct fq fq;
1230 struct codel_vars *cvars;
1231 struct codel_params cparams;
1232
1233 /* protects active_txqs and txqi->schedule_order */
1234 struct airtime_sched_info airtime[IEEE80211_NUM_ACS];
1235 u16 airtime_flags;
1236 u32 aql_threshold;
1237 atomic_t aql_total_pending_airtime;
1238
1239 const struct ieee80211_ops *ops;
1240
1241 /*
1242 * private workqueue to mac80211. mac80211 makes this accessible
1243 * via ieee80211_queue_work()
1244 */
1245 struct workqueue_struct *workqueue;
1246
1247 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1248 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1249 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1250 spinlock_t queue_stop_reason_lock;
1251
1252 int open_count;
1253 int monitors, cooked_mntrs;
1254 /* number of interfaces with corresponding FIF_ flags */
1255 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1256 fif_probe_req;
1257 bool probe_req_reg;
1258 bool rx_mcast_action_reg;
1259 unsigned int filter_flags; /* FIF_* */
1260
1261 bool wiphy_ciphers_allocated;
1262
1263 bool use_chanctx;
1264
1265 /* protects the aggregated multicast list and filter calls */
1266 spinlock_t filter_lock;
1267
1268 /* used for uploading changed mc list */
1269 struct work_struct reconfig_filter;
1270
1271 /* aggregated multicast list */
1272 struct netdev_hw_addr_list mc_list;
1273
1274 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1275
1276 /*
1277 * suspended is true if we finished all the suspend _and_ we have
1278 * not yet come up from resume. This is to be used by mac80211
1279 * to ensure driver sanity during suspend and mac80211's own
1280 * sanity. It can eventually be used for WoW as well.
1281 */
1282 bool suspended;
1283
1284 /*
1285 * Resuming is true while suspended, but when we're reprogramming the
1286 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1287 * again even though some other parts of the stack are still suspended
1288 * and we still drop received frames to avoid waking the stack.
1289 */
1290 bool resuming;
1291
1292 /*
1293 * quiescing is true during the suspend process _only_ to
1294 * ease timer cancelling etc.
1295 */
1296 bool quiescing;
1297
1298 /* device is started */
1299 bool started;
1300
1301 /* device is during a HW reconfig */
1302 bool in_reconfig;
1303
1304 /* wowlan is enabled -- don't reconfig on resume */
1305 bool wowlan;
1306
1307 struct work_struct radar_detected_work;
1308
1309 /* number of RX chains the hardware has */
1310 u8 rx_chains;
1311
1312 /* bitmap of which sbands were copied */
1313 u8 sband_allocated;
1314
1315 int tx_headroom; /* required headroom for hardware/radiotap */
1316
1317 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1318 * added to skb_queue will be processed, but frames in
1319 * skb_queue_unreliable may be dropped if the total length of these
1320 * queues increases over the limit. */
1321 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1322 struct tasklet_struct tasklet;
1323 struct sk_buff_head skb_queue;
1324 struct sk_buff_head skb_queue_unreliable;
1325
1326 spinlock_t rx_path_lock;
1327
1328 /* Station data */
1329 /*
1330 * The mutex only protects the list, hash table and
1331 * counter, reads are done with RCU.
1332 */
1333 struct mutex sta_mtx;
1334 spinlock_t tim_lock;
1335 unsigned long num_sta;
1336 struct list_head sta_list;
1337 struct rhltable sta_hash;
1338 struct timer_list sta_cleanup;
1339 int sta_generation;
1340
1341 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1342 struct tasklet_struct tx_pending_tasklet;
1343 struct tasklet_struct wake_txqs_tasklet;
1344
1345 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1346
1347 /* number of interfaces with allmulti RX */
1348 atomic_t iff_allmultis;
1349
1350 struct rate_control_ref *rate_ctrl;
1351
1352 struct arc4_ctx wep_tx_ctx;
1353 struct arc4_ctx wep_rx_ctx;
1354 u32 wep_iv;
1355
1356 /* see iface.c */
1357 struct list_head interfaces;
1358 struct list_head mon_list; /* only that are IFF_UP && !cooked */
1359 struct mutex iflist_mtx;
1360
1361 /*
1362 * Key mutex, protects sdata's key_list and sta_info's
1363 * key pointers and ptk_idx (write access, they're RCU.)
1364 */
1365 struct mutex key_mtx;
1366
1367 /* mutex for scan and work locking */
1368 struct mutex mtx;
1369
1370 /* Scanning and BSS list */
1371 unsigned long scanning;
1372 struct cfg80211_ssid scan_ssid;
1373 struct cfg80211_scan_request *int_scan_req;
1374 struct cfg80211_scan_request __rcu *scan_req;
1375 struct ieee80211_scan_request *hw_scan_req;
1376 struct cfg80211_chan_def scan_chandef;
1377 enum nl80211_band hw_scan_band;
1378 int scan_channel_idx;
1379 int scan_ies_len;
1380 int hw_scan_ies_bufsize;
1381 struct cfg80211_scan_info scan_info;
1382
1383 struct work_struct sched_scan_stopped_work;
1384 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1385 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1386 u8 scan_addr[ETH_ALEN];
1387
1388 unsigned long leave_oper_channel_time;
1389 enum mac80211_scan_state next_scan_state;
1390 struct delayed_work scan_work;
1391 struct ieee80211_sub_if_data __rcu *scan_sdata;
1392 /* For backward compatibility only -- do not use */
1393 struct cfg80211_chan_def _oper_chandef;
1394
1395 /* Temporary remain-on-channel for off-channel operations */
1396 struct ieee80211_channel *tmp_channel;
1397
1398 /* channel contexts */
1399 struct list_head chanctx_list;
1400 struct mutex chanctx_mtx;
1401
1402 #ifdef CONFIG_MAC80211_LEDS
1403 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1404 struct led_trigger tpt_led;
1405 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1406 atomic_t radio_led_active, tpt_led_active;
1407 struct tpt_led_trigger *tpt_led_trigger;
1408 #endif
1409
1410 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1411 /* SNMP counters */
1412 /* dot11CountersTable */
1413 u32 dot11TransmittedFragmentCount;
1414 u32 dot11MulticastTransmittedFrameCount;
1415 u32 dot11FailedCount;
1416 u32 dot11RetryCount;
1417 u32 dot11MultipleRetryCount;
1418 u32 dot11FrameDuplicateCount;
1419 u32 dot11ReceivedFragmentCount;
1420 u32 dot11MulticastReceivedFrameCount;
1421 u32 dot11TransmittedFrameCount;
1422
1423 /* TX/RX handler statistics */
1424 unsigned int tx_handlers_drop;
1425 unsigned int tx_handlers_queued;
1426 unsigned int tx_handlers_drop_wep;
1427 unsigned int tx_handlers_drop_not_assoc;
1428 unsigned int tx_handlers_drop_unauth_port;
1429 unsigned int rx_handlers_drop;
1430 unsigned int rx_handlers_queued;
1431 unsigned int rx_handlers_drop_nullfunc;
1432 unsigned int rx_handlers_drop_defrag;
1433 unsigned int tx_expand_skb_head;
1434 unsigned int tx_expand_skb_head_cloned;
1435 unsigned int rx_expand_skb_head_defrag;
1436 unsigned int rx_handlers_fragments;
1437 unsigned int tx_status_drop;
1438 #define I802_DEBUG_INC(c) (c)++
1439 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1440 #define I802_DEBUG_INC(c) do { } while (0)
1441 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1442
1443
1444 int total_ps_buffered; /* total number of all buffered unicast and
1445 * multicast packets for power saving stations
1446 */
1447
1448 bool pspolling;
1449 /*
1450 * PS can only be enabled when we have exactly one managed
1451 * interface (and monitors) in PS, this then points there.
1452 */
1453 struct ieee80211_sub_if_data *ps_sdata;
1454 struct work_struct dynamic_ps_enable_work;
1455 struct work_struct dynamic_ps_disable_work;
1456 struct timer_list dynamic_ps_timer;
1457 struct notifier_block ifa_notifier;
1458 struct notifier_block ifa6_notifier;
1459
1460 /*
1461 * The dynamic ps timeout configured from user space via WEXT -
1462 * this will override whatever chosen by mac80211 internally.
1463 */
1464 int dynamic_ps_forced_timeout;
1465
1466 int user_power_level; /* in dBm, for all interfaces */
1467
1468 enum ieee80211_smps_mode smps_mode;
1469
1470 struct work_struct restart_work;
1471
1472 #ifdef CONFIG_MAC80211_DEBUGFS
1473 struct local_debugfsdentries {
1474 struct dentry *rcdir;
1475 struct dentry *keys;
1476 } debugfs;
1477 bool force_tx_status;
1478 #endif
1479
1480 /*
1481 * Remain-on-channel support
1482 */
1483 struct delayed_work roc_work;
1484 struct list_head roc_list;
1485 struct work_struct hw_roc_start, hw_roc_done;
1486 unsigned long hw_roc_start_time;
1487 u64 roc_cookie_counter;
1488
1489 struct idr ack_status_frames;
1490 spinlock_t ack_status_lock;
1491
1492 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1493
1494 /* virtual monitor interface */
1495 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1496 struct cfg80211_chan_def monitor_chandef;
1497
1498 /* extended capabilities provided by mac80211 */
1499 u8 ext_capa[8];
1500 };
1501
1502 static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(struct net_device * dev)1503 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1504 {
1505 return netdev_priv(dev);
1506 }
1507
1508 static inline struct ieee80211_sub_if_data *
IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev * wdev)1509 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1510 {
1511 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1512 }
1513
1514 static inline struct ieee80211_supported_band *
ieee80211_get_sband(struct ieee80211_sub_if_data * sdata)1515 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1516 {
1517 struct ieee80211_local *local = sdata->local;
1518 struct ieee80211_chanctx_conf *chanctx_conf;
1519 enum nl80211_band band;
1520
1521 rcu_read_lock();
1522 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1523
1524 if (!chanctx_conf) {
1525 rcu_read_unlock();
1526 return NULL;
1527 }
1528
1529 band = chanctx_conf->def.chan->band;
1530 rcu_read_unlock();
1531
1532 return local->hw.wiphy->bands[band];
1533 }
1534
1535 /* this struct holds the value parsing from channel switch IE */
1536 struct ieee80211_csa_ie {
1537 struct cfg80211_chan_def chandef;
1538 u8 mode;
1539 u8 count;
1540 u8 ttl;
1541 u16 pre_value;
1542 u16 reason_code;
1543 u32 max_switch_time;
1544 };
1545
1546 /* Parsed Information Elements */
1547 struct ieee802_11_elems {
1548 const u8 *ie_start;
1549 size_t total_len;
1550 u32 crc;
1551
1552 /* pointers to IEs */
1553 const struct ieee80211_tdls_lnkie *lnk_id;
1554 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1555 const u8 *ext_capab;
1556 const u8 *ssid;
1557 const u8 *supp_rates;
1558 const u8 *ds_params;
1559 const struct ieee80211_tim_ie *tim;
1560 const u8 *rsn;
1561 const u8 *rsnx;
1562 const u8 *erp_info;
1563 const u8 *ext_supp_rates;
1564 const u8 *wmm_info;
1565 const u8 *wmm_param;
1566 const struct ieee80211_ht_cap *ht_cap_elem;
1567 const struct ieee80211_ht_operation *ht_operation;
1568 const struct ieee80211_vht_cap *vht_cap_elem;
1569 const struct ieee80211_vht_operation *vht_operation;
1570 const struct ieee80211_meshconf_ie *mesh_config;
1571 const u8 *he_cap;
1572 const struct ieee80211_he_operation *he_operation;
1573 const struct ieee80211_he_spr *he_spr;
1574 const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1575 const struct ieee80211_he_6ghz_capa *he_6ghz_capa;
1576 const struct ieee80211_tx_pwr_env *tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT];
1577 const u8 *uora_element;
1578 const u8 *mesh_id;
1579 const u8 *peering;
1580 const __le16 *awake_window;
1581 const u8 *preq;
1582 const u8 *prep;
1583 const u8 *perr;
1584 const struct ieee80211_rann_ie *rann;
1585 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1586 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1587 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1588 const u8 *max_channel_switch_time;
1589 const u8 *country_elem;
1590 const u8 *pwr_constr_elem;
1591 const u8 *cisco_dtpc_elem;
1592 const struct ieee80211_timeout_interval_ie *timeout_int;
1593 const u8 *opmode_notif;
1594 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1595 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1596 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1597 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
1598 const struct ieee80211_bssid_index *bssid_index;
1599 u8 max_bssid_indicator;
1600 u8 dtim_count;
1601 u8 dtim_period;
1602 const struct ieee80211_addba_ext_ie *addba_ext_ie;
1603 const struct ieee80211_s1g_cap *s1g_capab;
1604 const struct ieee80211_s1g_oper_ie *s1g_oper;
1605 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat;
1606 const struct ieee80211_aid_response_ie *aid_resp;
1607
1608 /* length of them, respectively */
1609 u8 ext_capab_len;
1610 u8 ssid_len;
1611 u8 supp_rates_len;
1612 u8 tim_len;
1613 u8 rsn_len;
1614 u8 rsnx_len;
1615 u8 ext_supp_rates_len;
1616 u8 wmm_info_len;
1617 u8 wmm_param_len;
1618 u8 he_cap_len;
1619 u8 mesh_id_len;
1620 u8 peering_len;
1621 u8 preq_len;
1622 u8 prep_len;
1623 u8 perr_len;
1624 u8 country_elem_len;
1625 u8 bssid_index_len;
1626 u8 tx_pwr_env_len[IEEE80211_TPE_MAX_IE_COUNT];
1627 u8 tx_pwr_env_num;
1628
1629 /* whether a parse error occurred while retrieving these elements */
1630 bool parse_error;
1631
1632 /*
1633 * scratch buffer that can be used for various element parsing related
1634 * tasks, e.g., element de-fragmentation etc.
1635 */
1636 size_t scratch_len;
1637 u8 *scratch_pos;
1638 u8 scratch[];
1639 };
1640
hw_to_local(struct ieee80211_hw * hw)1641 static inline struct ieee80211_local *hw_to_local(
1642 struct ieee80211_hw *hw)
1643 {
1644 return container_of(hw, struct ieee80211_local, hw);
1645 }
1646
to_txq_info(struct ieee80211_txq * txq)1647 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1648 {
1649 return container_of(txq, struct txq_info, txq);
1650 }
1651
txq_has_queue(struct ieee80211_txq * txq)1652 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1653 {
1654 struct txq_info *txqi = to_txq_info(txq);
1655
1656 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1657 }
1658
to_airtime_info(struct ieee80211_txq * txq)1659 static inline struct airtime_info *to_airtime_info(struct ieee80211_txq *txq)
1660 {
1661 struct ieee80211_sub_if_data *sdata;
1662 struct sta_info *sta;
1663
1664 if (txq->sta) {
1665 sta = container_of(txq->sta, struct sta_info, sta);
1666 return &sta->airtime[txq->ac];
1667 }
1668
1669 sdata = vif_to_sdata(txq->vif);
1670 return &sdata->airtime[txq->ac];
1671 }
1672
1673 /* To avoid divisions in the fast path, we keep pre-computed reciprocals for
1674 * airtime weight calculations. There are two different weights to keep track
1675 * of: The per-station weight and the sum of weights per phy.
1676 *
1677 * For the per-station weights (kept in airtime_info below), we use 32-bit
1678 * reciprocals with a devisor of 2^19. This lets us keep the multiplications and
1679 * divisions for the station weights as 32-bit operations at the cost of a bit
1680 * of rounding error for high weights; but the choice of divisor keeps rounding
1681 * errors <10% for weights <2^15, assuming no more than 8ms of airtime is
1682 * reported at a time.
1683 *
1684 * For the per-phy sum of weights the values can get higher, so we use 64-bit
1685 * operations for those with a 32-bit divisor, which should avoid any
1686 * significant rounding errors.
1687 */
1688 #define IEEE80211_RECIPROCAL_DIVISOR_64 0x100000000ULL
1689 #define IEEE80211_RECIPROCAL_SHIFT_64 32
1690 #define IEEE80211_RECIPROCAL_DIVISOR_32 0x80000U
1691 #define IEEE80211_RECIPROCAL_SHIFT_32 19
1692
airtime_weight_set(struct airtime_info * air_info,u16 weight)1693 static inline void airtime_weight_set(struct airtime_info *air_info, u16 weight)
1694 {
1695 if (air_info->weight == weight)
1696 return;
1697
1698 air_info->weight = weight;
1699 if (weight) {
1700 air_info->weight_reciprocal =
1701 IEEE80211_RECIPROCAL_DIVISOR_32 / weight;
1702 } else {
1703 air_info->weight_reciprocal = 0;
1704 }
1705 }
1706
airtime_weight_sum_set(struct airtime_sched_info * air_sched,int weight_sum)1707 static inline void airtime_weight_sum_set(struct airtime_sched_info *air_sched,
1708 int weight_sum)
1709 {
1710 if (air_sched->weight_sum == weight_sum)
1711 return;
1712
1713 air_sched->weight_sum = weight_sum;
1714 if (air_sched->weight_sum) {
1715 air_sched->weight_sum_reciprocal = IEEE80211_RECIPROCAL_DIVISOR_64;
1716 do_div(air_sched->weight_sum_reciprocal, air_sched->weight_sum);
1717 } else {
1718 air_sched->weight_sum_reciprocal = 0;
1719 }
1720 }
1721
1722 /* A problem when trying to enforce airtime fairness is that we want to divide
1723 * the airtime between the currently *active* stations. However, basing this on
1724 * the instantaneous queue state of stations doesn't work, as queues tend to
1725 * oscillate very quickly between empty and occupied, leading to the scheduler
1726 * thinking only a single station is active when deciding whether to allow
1727 * transmission (and thus not throttling correctly).
1728 *
1729 * To fix this we use a timer-based notion of activity: a station is considered
1730 * active if it has been scheduled within the last 100 ms; we keep a separate
1731 * list of all the stations considered active in this manner, and lazily update
1732 * the total weight of active stations from this list (filtering the stations in
1733 * the list by their 'last active' time).
1734 *
1735 * We add one additional safeguard to guard against stations that manage to get
1736 * scheduled every 100 ms but don't transmit a lot of data, and thus don't use
1737 * up any airtime. Such stations would be able to get priority for an extended
1738 * period of time if they do start transmitting at full capacity again, and so
1739 * we add an explicit maximum for how far behind a station is allowed to fall in
1740 * the virtual airtime domain. This limit is set to a relatively high value of
1741 * 20 ms because the main mechanism for catching up idle stations is the active
1742 * state as described above; i.e., the hard limit should only be hit in
1743 * pathological cases.
1744 */
1745 #define AIRTIME_ACTIVE_DURATION (100 * NSEC_PER_MSEC)
1746 #define AIRTIME_MAX_BEHIND 20000 /* 20 ms */
1747
airtime_is_active(struct airtime_info * air_info,u64 now)1748 static inline bool airtime_is_active(struct airtime_info *air_info, u64 now)
1749 {
1750 return air_info->last_scheduled >= now - AIRTIME_ACTIVE_DURATION;
1751 }
1752
airtime_set_active(struct airtime_sched_info * air_sched,struct airtime_info * air_info,u64 now)1753 static inline void airtime_set_active(struct airtime_sched_info *air_sched,
1754 struct airtime_info *air_info, u64 now)
1755 {
1756 air_info->last_scheduled = now;
1757 air_sched->last_schedule_activity = now;
1758 list_move_tail(&air_info->list, &air_sched->active_list);
1759 }
1760
airtime_catchup_v_t(struct airtime_sched_info * air_sched,u64 v_t,u64 now)1761 static inline bool airtime_catchup_v_t(struct airtime_sched_info *air_sched,
1762 u64 v_t, u64 now)
1763 {
1764 air_sched->v_t = v_t;
1765 return true;
1766 }
1767
init_airtime_info(struct airtime_info * air_info,struct airtime_sched_info * air_sched)1768 static inline void init_airtime_info(struct airtime_info *air_info,
1769 struct airtime_sched_info *air_sched)
1770 {
1771 atomic_set(&air_info->aql_tx_pending, 0);
1772 air_info->aql_limit_low = air_sched->aql_txq_limit_low;
1773 air_info->aql_limit_high = air_sched->aql_txq_limit_high;
1774 airtime_weight_set(air_info, IEEE80211_DEFAULT_AIRTIME_WEIGHT);
1775 INIT_LIST_HEAD(&air_info->list);
1776 }
1777
ieee80211_bssid_match(const u8 * raddr,const u8 * addr)1778 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1779 {
1780 return ether_addr_equal(raddr, addr) ||
1781 is_broadcast_ether_addr(raddr);
1782 }
1783
1784 static inline bool
ieee80211_have_rx_timestamp(struct ieee80211_rx_status * status)1785 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1786 {
1787 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1788 status->flag & RX_FLAG_MACTIME_END);
1789 return !!(status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END |
1790 RX_FLAG_MACTIME_PLCP_START));
1791 }
1792
1793 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1794 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1795
1796 /* This function returns the number of multicast stations connected to this
1797 * interface. It returns -1 if that number is not tracked, that is for netdevs
1798 * not in AP or AP_VLAN mode or when using 4addr.
1799 */
1800 static inline int
ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data * sdata)1801 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1802 {
1803 if (sdata->vif.type == NL80211_IFTYPE_AP)
1804 return atomic_read(&sdata->u.ap.num_mcast_sta);
1805 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1806 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1807 return -1;
1808 }
1809
1810 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1811 struct ieee80211_rx_status *status,
1812 unsigned int mpdu_len,
1813 unsigned int mpdu_offset);
1814 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1815 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1816 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1817 u32 changed);
1818 void ieee80211_configure_filter(struct ieee80211_local *local);
1819 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1820
1821 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1822 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1823 u64 *cookie, gfp_t gfp);
1824
1825 void ieee80211_check_fast_rx(struct sta_info *sta);
1826 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1827 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1828 void ieee80211_clear_fast_rx(struct sta_info *sta);
1829
1830 /* STA code */
1831 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1832 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1833 struct cfg80211_auth_request *req);
1834 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1835 struct cfg80211_assoc_request *req);
1836 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1837 struct cfg80211_deauth_request *req);
1838 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1839 struct cfg80211_disassoc_request *req);
1840 void ieee80211_send_pspoll(struct ieee80211_local *local,
1841 struct ieee80211_sub_if_data *sdata);
1842 void ieee80211_recalc_ps(struct ieee80211_local *local);
1843 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1844 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1845 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1846 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1847 struct sk_buff *skb);
1848 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
1849 struct sk_buff *skb);
1850 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1851 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1852 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1853 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1854 __le16 fc, bool acked);
1855 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1856 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1857 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1858 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
1859 u8 *bssid, u8 reason, bool tx);
1860
1861 /* IBSS code */
1862 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1863 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1864 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1865 const u8 *bssid, const u8 *addr, u32 supp_rates);
1866 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1867 struct cfg80211_ibss_params *params);
1868 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1869 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1870 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1871 struct sk_buff *skb);
1872 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1873 struct cfg80211_csa_settings *csa_settings);
1874 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1875 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1876
1877 /* OCB code */
1878 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1879 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1880 const u8 *bssid, const u8 *addr, u32 supp_rates);
1881 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1882 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1883 struct ocb_setup *setup);
1884 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1885
1886 /* mesh code */
1887 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1888 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1889 struct sk_buff *skb);
1890 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1891 struct cfg80211_csa_settings *csa_settings);
1892 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1893
1894 /* scan/BSS handling */
1895 void ieee80211_scan_work(struct work_struct *work);
1896 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1897 const u8 *ssid, u8 ssid_len,
1898 struct ieee80211_channel **channels,
1899 unsigned int n_channels,
1900 enum nl80211_bss_scan_width scan_width);
1901 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1902 struct cfg80211_scan_request *req);
1903 void ieee80211_scan_cancel(struct ieee80211_local *local);
1904 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1905 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1906
1907 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1908 struct ieee80211_bss *
1909 ieee80211_bss_info_update(struct ieee80211_local *local,
1910 struct ieee80211_rx_status *rx_status,
1911 struct ieee80211_mgmt *mgmt,
1912 size_t len,
1913 struct ieee80211_channel *channel);
1914 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1915 struct ieee80211_bss *bss);
1916
1917 /* scheduled scan handling */
1918 int
1919 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1920 struct cfg80211_sched_scan_request *req);
1921 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1922 struct cfg80211_sched_scan_request *req);
1923 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1924 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1925 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1926
1927 /* off-channel/mgmt-tx */
1928 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1929 void ieee80211_offchannel_return(struct ieee80211_local *local);
1930 void ieee80211_roc_setup(struct ieee80211_local *local);
1931 void ieee80211_start_next_roc(struct ieee80211_local *local);
1932 void ieee80211_roc_purge(struct ieee80211_local *local,
1933 struct ieee80211_sub_if_data *sdata);
1934 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1935 struct ieee80211_channel *chan,
1936 unsigned int duration, u64 *cookie);
1937 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1938 struct wireless_dev *wdev, u64 cookie);
1939 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1940 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1941 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1942 struct wireless_dev *wdev, u64 cookie);
1943
1944 /* channel switch handling */
1945 void ieee80211_csa_finalize_work(struct work_struct *work);
1946 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1947 struct cfg80211_csa_settings *params);
1948
1949 /* color change handling */
1950 void ieee80211_color_change_finalize_work(struct work_struct *work);
1951
1952 /* interface handling */
1953 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
1954 NETIF_F_HW_CSUM | NETIF_F_SG | \
1955 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE)
1956 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM)
1957 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \
1958 MAC80211_SUPPORTED_FEATURES_RX)
1959
1960 int ieee80211_iface_init(void);
1961 void ieee80211_iface_exit(void);
1962 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1963 unsigned char name_assign_type,
1964 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1965 struct vif_params *params);
1966 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1967 enum nl80211_iftype type);
1968 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1969 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1970 u32 ieee80211_idle_off(struct ieee80211_local *local);
1971 void ieee80211_recalc_idle(struct ieee80211_local *local);
1972 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1973 const int offset);
1974 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1975 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1976 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1977 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1978
1979 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1980 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1981 bool update_bss);
1982 void ieee80211_recalc_offload(struct ieee80211_local *local);
1983
ieee80211_sdata_running(struct ieee80211_sub_if_data * sdata)1984 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1985 {
1986 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1987 }
1988
1989 /* tx handling */
1990 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1991 void ieee80211_tx_pending(struct tasklet_struct *t);
1992 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1993 struct net_device *dev);
1994 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1995 struct net_device *dev);
1996 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb,
1997 struct net_device *dev);
1998 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1999 struct net_device *dev,
2000 u32 info_flags,
2001 u32 ctrl_flags,
2002 u64 *cookie);
2003 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
2004 struct sk_buff_head *skbs);
2005 struct sk_buff *
2006 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
2007 struct sk_buff *skb, u32 info_flags);
2008 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
2009 struct ieee80211_supported_band *sband,
2010 int retry_count, int shift, bool send_to_cooked,
2011 struct ieee80211_tx_status *status);
2012
2013 void ieee80211_check_fast_xmit(struct sta_info *sta);
2014 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
2015 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
2016 void ieee80211_clear_fast_xmit(struct sta_info *sta);
2017 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
2018 const u8 *buf, size_t len,
2019 const u8 *dest, __be16 proto, bool unencrypted,
2020 int link_id, u64 *cookie);
2021 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
2022 const u8 *buf, size_t len);
2023 void ieee80211_resort_txq(struct ieee80211_hw *hw,
2024 struct ieee80211_txq *txq);
2025 void ieee80211_unschedule_txq(struct ieee80211_hw *hw,
2026 struct ieee80211_txq *txq,
2027 bool purge);
2028 void ieee80211_update_airtime_weight(struct ieee80211_local *local,
2029 struct airtime_sched_info *air_sched,
2030 u64 now, bool force);
2031
2032 /* HT */
2033 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
2034 struct ieee80211_sta_ht_cap *ht_cap);
2035 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
2036 struct ieee80211_supported_band *sband,
2037 const struct ieee80211_ht_cap *ht_cap_ie,
2038 struct sta_info *sta);
2039 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
2040 const u8 *da, u16 tid,
2041 u16 initiator, u16 reason_code);
2042 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
2043 enum ieee80211_smps_mode smps, const u8 *da,
2044 const u8 *bssid);
2045 void ieee80211_request_smps_ap_work(struct work_struct *work);
2046 void ieee80211_request_smps_mgd_work(struct work_struct *work);
2047 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
2048 enum ieee80211_smps_mode smps_mode_new);
2049
2050 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
2051 u16 initiator, u16 reason, bool stop);
2052 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
2053 u16 initiator, u16 reason, bool stop);
2054 void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
2055 u8 dialog_token, u16 timeout,
2056 u16 start_seq_num, u16 ba_policy, u16 tid,
2057 u16 buf_size, bool tx, bool auto_seq,
2058 const struct ieee80211_addba_ext_ie *addbaext);
2059 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
2060 enum ieee80211_agg_stop_reason reason);
2061 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
2062 struct sta_info *sta,
2063 struct ieee80211_mgmt *mgmt, size_t len);
2064 void ieee80211_process_addba_resp(struct ieee80211_local *local,
2065 struct sta_info *sta,
2066 struct ieee80211_mgmt *mgmt,
2067 size_t len);
2068 void ieee80211_process_addba_request(struct ieee80211_local *local,
2069 struct sta_info *sta,
2070 struct ieee80211_mgmt *mgmt,
2071 size_t len);
2072
2073 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2074 enum ieee80211_agg_stop_reason reason);
2075 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2076 enum ieee80211_agg_stop_reason reason);
2077 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
2078 struct tid_ampdu_tx *tid_tx);
2079 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
2080 struct tid_ampdu_tx *tid_tx);
2081 void ieee80211_ba_session_work(struct work_struct *work);
2082 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
2083 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
2084
2085 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
2086 enum nl80211_smps_mode
2087 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
2088
2089 /* VHT */
2090 void
2091 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
2092 struct ieee80211_supported_band *sband,
2093 const struct ieee80211_vht_cap *vht_cap_ie,
2094 struct sta_info *sta);
2095 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
2096 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
2097 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
2098 enum ieee80211_sta_rx_bandwidth
2099 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
2100 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
2101 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
2102 struct ieee80211_mgmt *mgmt);
2103 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2104 struct sta_info *sta, u8 opmode,
2105 enum nl80211_band band);
2106 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2107 struct sta_info *sta, u8 opmode,
2108 enum nl80211_band band);
2109 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
2110 struct ieee80211_sta_vht_cap *vht_cap);
2111 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
2112 u16 vht_mask[NL80211_VHT_NSS_MAX]);
2113 enum nl80211_chan_width
2114 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta);
2115
2116 /* HE */
2117 void
2118 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
2119 struct ieee80211_supported_band *sband,
2120 const u8 *he_cap_ie, u8 he_cap_len,
2121 const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
2122 struct sta_info *sta);
2123 void
2124 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
2125 const struct ieee80211_he_spr *he_spr_ie_elem);
2126
2127 void
2128 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
2129 const struct ieee80211_he_operation *he_op_ie_elem);
2130
2131 /* S1G */
2132 void ieee80211_s1g_sta_rate_init(struct sta_info *sta);
2133 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb);
2134 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata,
2135 struct sk_buff *skb);
2136 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata,
2137 struct sk_buff *skb);
2138
2139 /* Spectrum management */
2140 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
2141 struct ieee80211_mgmt *mgmt,
2142 size_t len);
2143 /**
2144 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
2145 * @sdata: the sdata of the interface which has received the frame
2146 * @elems: parsed 802.11 elements received with the frame
2147 * @current_band: indicates the current band
2148 * @vht_cap_info: VHT capabilities of the transmitter
2149 * @sta_flags: contains information about own capabilities and restrictions
2150 * to decide which channel switch announcements can be accepted. Only the
2151 * following subset of &enum ieee80211_sta_flags are evaluated:
2152 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
2153 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
2154 * %IEEE80211_STA_DISABLE_160MHZ.
2155 * @bssid: the currently connected bssid (for reporting)
2156 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
2157 All of them will be filled with if success only.
2158 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
2159 */
2160 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
2161 struct ieee802_11_elems *elems,
2162 enum nl80211_band current_band,
2163 u32 vht_cap_info,
2164 u32 sta_flags, u8 *bssid,
2165 struct ieee80211_csa_ie *csa_ie);
2166
2167 /* Suspend/resume and hw reconfiguration */
2168 int ieee80211_reconfig(struct ieee80211_local *local);
2169 void ieee80211_stop_device(struct ieee80211_local *local);
2170
2171 int __ieee80211_suspend(struct ieee80211_hw *hw,
2172 struct cfg80211_wowlan *wowlan);
2173
__ieee80211_resume(struct ieee80211_hw * hw)2174 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
2175 {
2176 struct ieee80211_local *local = hw_to_local(hw);
2177
2178 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
2179 !test_bit(SCAN_COMPLETED, &local->scanning),
2180 "%s: resume with hardware scan still in progress\n",
2181 wiphy_name(hw->wiphy));
2182
2183 return ieee80211_reconfig(hw_to_local(hw));
2184 }
2185
2186 /* utility functions/constants */
2187 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
2188 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
2189 int rate, int erp, int short_preamble,
2190 int shift);
2191 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
2192 struct ieee80211_tx_queue_params *qparam,
2193 int ac);
2194 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
2195 bool bss_notify, bool enable_qos);
2196 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
2197 struct sta_info *sta, struct sk_buff *skb);
2198
2199 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2200 struct sk_buff *skb, int tid,
2201 enum nl80211_band band);
2202
2203 /* sta_out needs to be checked for ERR_PTR() before using */
2204 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata,
2205 struct sk_buff *skb,
2206 struct sta_info **sta_out);
2207
2208 static inline void
ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid,enum nl80211_band band)2209 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2210 struct sk_buff *skb, int tid,
2211 enum nl80211_band band)
2212 {
2213 rcu_read_lock();
2214 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
2215 rcu_read_unlock();
2216 }
2217
ieee80211_tx_skb_tid(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid)2218 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
2219 struct sk_buff *skb, int tid)
2220 {
2221 struct ieee80211_chanctx_conf *chanctx_conf;
2222
2223 rcu_read_lock();
2224 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2225 if (WARN_ON(!chanctx_conf)) {
2226 rcu_read_unlock();
2227 kfree_skb(skb);
2228 return;
2229 }
2230
2231 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
2232 chanctx_conf->def.chan->band);
2233 rcu_read_unlock();
2234 }
2235
ieee80211_tx_skb(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb)2236 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
2237 struct sk_buff *skb)
2238 {
2239 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
2240 ieee80211_tx_skb_tid(sdata, skb, 7);
2241 }
2242
2243 struct ieee802_11_elems *ieee802_11_parse_elems_crc(const u8 *start, size_t len,
2244 bool action,
2245 u64 filter, u32 crc,
2246 const u8 *transmitter_bssid,
2247 const u8 *bss_bssid);
2248 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)2249 ieee802_11_parse_elems(const u8 *start, size_t len, bool action,
2250 const u8 *transmitter_bssid,
2251 const u8 *bss_bssid)
2252 {
2253 return ieee802_11_parse_elems_crc(start, len, action, 0, 0,
2254 transmitter_bssid, bss_bssid);
2255 }
2256
2257
2258 extern const int ieee802_1d_to_ac[8];
2259
ieee80211_ac_from_tid(int tid)2260 static inline int ieee80211_ac_from_tid(int tid)
2261 {
2262 return ieee802_1d_to_ac[tid & 7];
2263 }
2264
2265 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
2266 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
2267 void ieee80211_dynamic_ps_timer(struct timer_list *t);
2268 void ieee80211_send_nullfunc(struct ieee80211_local *local,
2269 struct ieee80211_sub_if_data *sdata,
2270 bool powersave);
2271 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
2272 struct ieee80211_sub_if_data *sdata);
2273 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2274 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
2275
2276 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
2277 unsigned long queues,
2278 enum queue_stop_reason reason,
2279 bool refcounted);
2280 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
2281 struct ieee80211_sub_if_data *sdata,
2282 enum queue_stop_reason reason);
2283 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
2284 struct ieee80211_sub_if_data *sdata,
2285 enum queue_stop_reason reason);
2286 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
2287 unsigned long queues,
2288 enum queue_stop_reason reason,
2289 bool refcounted);
2290 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
2291 enum queue_stop_reason reason,
2292 bool refcounted);
2293 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
2294 enum queue_stop_reason reason,
2295 bool refcounted);
2296 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
2297 void ieee80211_add_pending_skb(struct ieee80211_local *local,
2298 struct sk_buff *skb);
2299 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
2300 struct sk_buff_head *skbs);
2301 void ieee80211_flush_queues(struct ieee80211_local *local,
2302 struct ieee80211_sub_if_data *sdata, bool drop);
2303 void __ieee80211_flush_queues(struct ieee80211_local *local,
2304 struct ieee80211_sub_if_data *sdata,
2305 unsigned int queues, bool drop);
2306
ieee80211_can_run_worker(struct ieee80211_local * local)2307 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2308 {
2309 /*
2310 * It's unsafe to try to do any work during reconfigure flow.
2311 * When the flow ends the work will be requeued.
2312 */
2313 if (local->in_reconfig)
2314 return false;
2315
2316 /*
2317 * If quiescing is set, we are racing with __ieee80211_suspend.
2318 * __ieee80211_suspend flushes the workers after setting quiescing,
2319 * and we check quiescing / suspended before enqueing new workers.
2320 * We should abort the worker to avoid the races below.
2321 */
2322 if (local->quiescing)
2323 return false;
2324
2325 /*
2326 * We might already be suspended if the following scenario occurs:
2327 * __ieee80211_suspend Control path
2328 *
2329 * if (local->quiescing)
2330 * return;
2331 * local->quiescing = true;
2332 * flush_workqueue();
2333 * queue_work(...);
2334 * local->suspended = true;
2335 * local->quiescing = false;
2336 * worker starts running...
2337 */
2338 if (local->suspended)
2339 return false;
2340
2341 return true;
2342 }
2343
2344 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2345 void ieee80211_txq_set_params(struct ieee80211_local *local);
2346 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2347 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2348 struct sta_info *sta,
2349 struct txq_info *txq, int tid);
2350 void ieee80211_txq_purge(struct ieee80211_local *local,
2351 struct txq_info *txqi);
2352 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2353 struct ieee80211_sub_if_data *sdata);
2354 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2355 struct txq_info *txqi);
2356 void ieee80211_wake_txqs(struct tasklet_struct *t);
2357 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2358 u16 transaction, u16 auth_alg, u16 status,
2359 const u8 *extra, size_t extra_len, const u8 *bssid,
2360 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2361 u32 tx_flags);
2362 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2363 const u8 *da, const u8 *bssid,
2364 u16 stype, u16 reason,
2365 bool send_frame, u8 *frame_buf);
2366
2367 enum {
2368 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
2369 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
2370 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
2371 };
2372
2373 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2374 size_t buffer_len,
2375 struct ieee80211_scan_ies *ie_desc,
2376 const u8 *ie, size_t ie_len,
2377 u8 bands_used, u32 *rate_masks,
2378 struct cfg80211_chan_def *chandef,
2379 u32 flags);
2380 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2381 const u8 *src, const u8 *dst,
2382 u32 ratemask,
2383 struct ieee80211_channel *chan,
2384 const u8 *ssid, size_t ssid_len,
2385 const u8 *ie, size_t ie_len,
2386 u32 flags);
2387 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2388 struct ieee802_11_elems *elems,
2389 enum nl80211_band band, u32 *basic_rates);
2390 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2391 enum ieee80211_smps_mode smps_mode);
2392 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
2393 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
2394
2395 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2396 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2397 u16 cap);
2398 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2399 const struct cfg80211_chan_def *chandef,
2400 u16 prot_mode, bool rifs_mode);
2401 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2402 const struct cfg80211_chan_def *chandef);
2403 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2404 u32 cap);
2405 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2406 const struct cfg80211_chan_def *chandef);
2407 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2408 u8 *ieee80211_ie_build_he_cap(u32 disable_flags, u8 *pos,
2409 const struct ieee80211_sta_he_cap *he_cap,
2410 u8 *end);
2411 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2412 struct sk_buff *skb);
2413 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef);
2414 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2415 const struct ieee80211_supported_band *sband,
2416 const u8 *srates, int srates_len, u32 *rates);
2417 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2418 struct sk_buff *skb, bool need_basic,
2419 enum nl80211_band band);
2420 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2421 struct sk_buff *skb, bool need_basic,
2422 enum nl80211_band band);
2423 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2424 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
2425 struct ieee80211_sta_s1g_cap *caps,
2426 struct sk_buff *skb);
2427 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
2428 struct sk_buff *skb);
2429
2430 /* channel management */
2431 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2432 struct cfg80211_chan_def *chandef);
2433 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
2434 const struct ieee80211_vht_operation *oper,
2435 const struct ieee80211_ht_operation *htop,
2436 struct cfg80211_chan_def *chandef);
2437 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
2438 const struct ieee80211_he_operation *he_oper,
2439 struct cfg80211_chan_def *chandef);
2440 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
2441 struct cfg80211_chan_def *chandef);
2442 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2443
2444 int __must_check
2445 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
2446 const struct cfg80211_chan_def *chandef,
2447 enum ieee80211_chanctx_mode mode);
2448 int __must_check
2449 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
2450 const struct cfg80211_chan_def *chandef,
2451 enum ieee80211_chanctx_mode mode,
2452 bool radar_required);
2453 int __must_check
2454 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2455 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2456
2457 int __must_check
2458 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2459 const struct cfg80211_chan_def *chandef,
2460 u32 *changed);
2461 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2462 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2463 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2464 bool clear);
2465 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2466 struct ieee80211_chanctx *ctx);
2467
2468 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2469 struct ieee80211_chanctx *chanctx);
2470 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2471 struct ieee80211_chanctx *ctx);
2472 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2473
2474 void ieee80211_dfs_cac_timer(unsigned long data);
2475 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2476 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2477 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2478 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2479 struct cfg80211_csa_settings *csa_settings);
2480
2481 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2482 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2483 const struct ieee80211_cipher_scheme *
2484 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2485 enum nl80211_iftype iftype);
2486 int ieee80211_cs_headroom(struct ieee80211_local *local,
2487 struct cfg80211_crypto_settings *crypto,
2488 enum nl80211_iftype iftype);
2489 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2490 struct ieee80211_sub_if_data *sdata);
2491 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2492 const struct cfg80211_chan_def *chandef,
2493 enum ieee80211_chanctx_mode chanmode,
2494 u8 radar_detect);
2495 int ieee80211_max_num_channels(struct ieee80211_local *local);
2496 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2497 struct ieee80211_chanctx *ctx);
2498
2499 /* TDLS */
2500 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2501 const u8 *peer, u8 action_code, u8 dialog_token,
2502 u16 status_code, u32 peer_capability,
2503 bool initiator, const u8 *extra_ies,
2504 size_t extra_ies_len);
2505 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2506 const u8 *peer, enum nl80211_tdls_operation oper);
2507 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2508 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2509 const u8 *addr, u8 oper_class,
2510 struct cfg80211_chan_def *chandef);
2511 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2512 struct net_device *dev,
2513 const u8 *addr);
2514 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2515 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2516 const u8 *peer, u16 reason);
2517 void
2518 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata,
2519 struct sk_buff *skb);
2520
2521
2522 const char *ieee80211_get_reason_code_string(u16 reason_code);
2523 u16 ieee80211_encode_usf(int val);
2524 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
2525 enum nl80211_iftype type);
2526
2527 extern const struct ethtool_ops ieee80211_ethtool_ops;
2528
2529 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw,
2530 struct ieee80211_vif *vif,
2531 struct ieee80211_sta *pubsta,
2532 int len, bool ampdu);
2533 #ifdef CONFIG_MAC80211_NOINLINE
2534 #define debug_noinline noinline
2535 #else
2536 #define debug_noinline
2537 #endif
2538
2539 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache);
2540 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache);
2541
2542 #endif /* IEEE80211_I_H */
2543