1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright 2002-2005, Instant802 Networks, Inc.
4 * Copyright 2005, Devicescape Software, Inc.
5 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
6 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net>
7 * Copyright 2013-2015 Intel Mobile Communications GmbH
8 * Copyright (C) 2018-2020 Intel Corporation
9 */
10
11 #ifndef IEEE80211_I_H
12 #define IEEE80211_I_H
13
14 #include <linux/kernel.h>
15 #include <linux/device.h>
16 #include <linux/if_ether.h>
17 #include <linux/interrupt.h>
18 #include <linux/list.h>
19 #include <linux/netdevice.h>
20 #include <linux/skbuff.h>
21 #include <linux/workqueue.h>
22 #include <linux/types.h>
23 #include <linux/spinlock.h>
24 #include <linux/etherdevice.h>
25 #include <linux/leds.h>
26 #include <linux/idr.h>
27 #include <linux/rhashtable.h>
28 #include <net/ieee80211_radiotap.h>
29 #include <net/cfg80211.h>
30 #include <net/mac80211.h>
31 #include <net/fq.h>
32 #include "key.h"
33 #include "sta_info.h"
34 #include "debug.h"
35
36 extern const struct cfg80211_ops mac80211_config_ops;
37
38 struct ieee80211_local;
39
40 /* Maximum number of broadcast/multicast frames to buffer when some of the
41 * associated stations are using power saving. */
42 #define AP_MAX_BC_BUFFER 128
43
44 /* Maximum number of frames buffered to all STAs, including multicast frames.
45 * Note: increasing this limit increases the potential memory requirement. Each
46 * frame can be up to about 2 kB long. */
47 #define TOTAL_MAX_TX_BUFFER 512
48
49 /* Required encryption head and tailroom */
50 #define IEEE80211_ENCRYPT_HEADROOM 8
51 #define IEEE80211_ENCRYPT_TAILROOM 18
52
53 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
54 * reception of at least three fragmented frames. This limit can be increased
55 * by changing this define, at the cost of slower frame reassembly and
56 * increased memory use (about 2 kB of RAM per entry). */
57 #define IEEE80211_FRAGMENT_MAX 4
58
59 /* power level hasn't been configured (or set to automatic) */
60 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
61
62 /*
63 * Some APs experience problems when working with U-APSD. Decreasing the
64 * probability of that happening by using legacy mode for all ACs but VO isn't
65 * enough.
66 *
67 * Cisco 4410N originally forced us to enable VO by default only because it
68 * treated non-VO ACs as legacy.
69 *
70 * However some APs (notably Netgear R7000) silently reclassify packets to
71 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
72 * clients would never see some frames (e.g. ARP responses) or would fetch them
73 * accidentally after a long time.
74 *
75 * It makes little sense to enable u-APSD queues by default because it needs
76 * userspace applications to be aware of it to actually take advantage of the
77 * possible additional powersavings. Implicitly depending on driver autotrigger
78 * frame support doesn't make much sense.
79 */
80 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
81
82 #define IEEE80211_DEFAULT_MAX_SP_LEN \
83 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
84
85 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS];
86
87 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
88
89 #define IEEE80211_MAX_NAN_INSTANCE_ID 255
90
91 struct ieee80211_fragment_entry {
92 struct sk_buff_head skb_list;
93 unsigned long first_frag_time;
94 u16 seq;
95 u16 extra_len;
96 u16 last_frag;
97 u8 rx_queue;
98 bool check_sequential_pn; /* needed for CCMP/GCMP */
99 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
100 };
101
102
103 struct ieee80211_bss {
104 u32 device_ts_beacon, device_ts_presp;
105
106 bool wmm_used;
107 bool uapsd_supported;
108
109 #define IEEE80211_MAX_SUPP_RATES 32
110 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
111 size_t supp_rates_len;
112 struct ieee80211_rate *beacon_rate;
113
114 u32 vht_cap_info;
115
116 /*
117 * During association, we save an ERP value from a probe response so
118 * that we can feed ERP info to the driver when handling the
119 * association completes. these fields probably won't be up-to-date
120 * otherwise, you probably don't want to use them.
121 */
122 bool has_erp_value;
123 u8 erp_value;
124
125 /* Keep track of the corruption of the last beacon/probe response. */
126 u8 corrupt_data;
127
128 /* Keep track of what bits of information we have valid info for. */
129 u8 valid_data;
130 };
131
132 /**
133 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
134 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
135 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
136 *
137 * These are bss flags that are attached to a bss in the
138 * @corrupt_data field of &struct ieee80211_bss.
139 */
140 enum ieee80211_bss_corrupt_data_flags {
141 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
142 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
143 };
144
145 /**
146 * enum ieee80211_valid_data_flags - BSS valid data flags
147 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
148 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
149 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
150 *
151 * These are bss flags that are attached to a bss in the
152 * @valid_data field of &struct ieee80211_bss. They show which parts
153 * of the data structure were received as a result of an un-corrupted
154 * beacon/probe response.
155 */
156 enum ieee80211_bss_valid_data_flags {
157 IEEE80211_BSS_VALID_WMM = BIT(1),
158 IEEE80211_BSS_VALID_RATES = BIT(2),
159 IEEE80211_BSS_VALID_ERP = BIT(3)
160 };
161
162 typedef unsigned __bitwise ieee80211_tx_result;
163 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
164 #define TX_DROP ((__force ieee80211_tx_result) 1u)
165 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
166
167 #define IEEE80211_TX_UNICAST BIT(1)
168 #define IEEE80211_TX_PS_BUFFERED BIT(2)
169
170 struct ieee80211_tx_data {
171 struct sk_buff *skb;
172 struct sk_buff_head skbs;
173 struct ieee80211_local *local;
174 struct ieee80211_sub_if_data *sdata;
175 struct sta_info *sta;
176 struct ieee80211_key *key;
177 struct ieee80211_tx_rate rate;
178
179 unsigned int flags;
180 };
181
182
183 typedef unsigned __bitwise ieee80211_rx_result;
184 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
185 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
186 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
187 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
188
189 /**
190 * enum ieee80211_packet_rx_flags - packet RX flags
191 * @IEEE80211_RX_AMSDU: a-MSDU packet
192 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
193 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
194 *
195 * These are per-frame flags that are attached to a frame in the
196 * @rx_flags field of &struct ieee80211_rx_status.
197 */
198 enum ieee80211_packet_rx_flags {
199 IEEE80211_RX_AMSDU = BIT(3),
200 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
201 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
202 };
203
204 /**
205 * enum ieee80211_rx_flags - RX data flags
206 *
207 * @IEEE80211_RX_CMNTR: received on cooked monitor already
208 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
209 * to cfg80211_report_obss_beacon().
210 *
211 * These flags are used across handling multiple interfaces
212 * for a single frame.
213 */
214 enum ieee80211_rx_flags {
215 IEEE80211_RX_CMNTR = BIT(0),
216 IEEE80211_RX_BEACON_REPORTED = BIT(1),
217 };
218
219 struct ieee80211_rx_data {
220 struct list_head *list;
221 struct sk_buff *skb;
222 struct ieee80211_local *local;
223 struct ieee80211_sub_if_data *sdata;
224 struct sta_info *sta;
225 struct ieee80211_key *key;
226
227 unsigned int flags;
228
229 /*
230 * Index into sequence numbers array, 0..16
231 * since the last (16) is used for non-QoS,
232 * will be 16 on non-QoS frames.
233 */
234 int seqno_idx;
235
236 /*
237 * Index into the security IV/PN arrays, 0..16
238 * since the last (16) is used for CCMP-encrypted
239 * management frames, will be set to 16 on mgmt
240 * frames and 0 on non-QoS frames.
241 */
242 int security_idx;
243
244 u32 tkip_iv32;
245 u16 tkip_iv16;
246 };
247
248 struct ieee80211_csa_settings {
249 const u16 *counter_offsets_beacon;
250 const u16 *counter_offsets_presp;
251
252 int n_counter_offsets_beacon;
253 int n_counter_offsets_presp;
254
255 u8 count;
256 };
257
258 struct beacon_data {
259 u8 *head, *tail;
260 int head_len, tail_len;
261 struct ieee80211_meshconf_ie *meshconf;
262 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
263 u8 cntdwn_current_counter;
264 struct rcu_head rcu_head;
265 };
266
267 struct probe_resp {
268 struct rcu_head rcu_head;
269 int len;
270 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
271 u8 data[];
272 };
273
274 struct fils_discovery_data {
275 struct rcu_head rcu_head;
276 int len;
277 u8 data[];
278 };
279
280 struct unsol_bcast_probe_resp_data {
281 struct rcu_head rcu_head;
282 int len;
283 u8 data[];
284 };
285
286 struct ps_data {
287 /* yes, this looks ugly, but guarantees that we can later use
288 * bitmap_empty :)
289 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
290 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
291 __aligned(__alignof__(unsigned long));
292 struct sk_buff_head bc_buf;
293 atomic_t num_sta_ps; /* number of stations in PS mode */
294 int dtim_count;
295 bool dtim_bc_mc;
296 };
297
298 struct ieee80211_if_ap {
299 struct beacon_data __rcu *beacon;
300 struct probe_resp __rcu *probe_resp;
301 struct fils_discovery_data __rcu *fils_discovery;
302 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp;
303
304 /* to be used after channel switch. */
305 struct cfg80211_beacon_data *next_beacon;
306 struct list_head vlans; /* write-protected with RTNL and local->mtx */
307
308 struct ps_data ps;
309 atomic_t num_mcast_sta; /* number of stations receiving multicast */
310
311 bool multicast_to_unicast;
312 };
313
314 struct ieee80211_if_wds {
315 struct sta_info *sta;
316 u8 remote_addr[ETH_ALEN];
317 };
318
319 struct ieee80211_if_vlan {
320 struct list_head list; /* write-protected with RTNL and local->mtx */
321
322 /* used for all tx if the VLAN is configured to 4-addr mode */
323 struct sta_info __rcu *sta;
324 atomic_t num_mcast_sta; /* number of stations receiving multicast */
325 };
326
327 struct mesh_stats {
328 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
329 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
330 __u32 fwded_frames; /* Mesh total forwarded frames */
331 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
332 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
333 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
334 };
335
336 #define PREQ_Q_F_START 0x1
337 #define PREQ_Q_F_REFRESH 0x2
338 struct mesh_preq_queue {
339 struct list_head list;
340 u8 dst[ETH_ALEN];
341 u8 flags;
342 };
343
344 struct ieee80211_roc_work {
345 struct list_head list;
346
347 struct ieee80211_sub_if_data *sdata;
348
349 struct ieee80211_channel *chan;
350
351 bool started, abort, hw_begun, notified;
352 bool on_channel;
353
354 unsigned long start_time;
355
356 u32 duration, req_duration;
357 struct sk_buff *frame;
358 u64 cookie, mgmt_tx_cookie;
359 enum ieee80211_roc_type type;
360 };
361
362 /* flags used in struct ieee80211_if_managed.flags */
363 enum ieee80211_sta_flags {
364 IEEE80211_STA_CONNECTION_POLL = BIT(1),
365 IEEE80211_STA_CONTROL_PORT = BIT(2),
366 IEEE80211_STA_DISABLE_HT = BIT(4),
367 IEEE80211_STA_MFP_ENABLED = BIT(6),
368 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
369 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
370 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
371 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
372 IEEE80211_STA_DISABLE_VHT = BIT(11),
373 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
374 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
375 IEEE80211_STA_DISABLE_WMM = BIT(14),
376 IEEE80211_STA_ENABLE_RRM = BIT(15),
377 IEEE80211_STA_DISABLE_HE = BIT(16),
378 };
379
380 struct ieee80211_mgd_auth_data {
381 struct cfg80211_bss *bss;
382 unsigned long timeout;
383 int tries;
384 u16 algorithm, expected_transaction;
385
386 u8 key[WLAN_KEY_LEN_WEP104];
387 u8 key_len, key_idx;
388 bool done;
389 bool peer_confirmed;
390 bool timeout_started;
391
392 u16 sae_trans, sae_status;
393 size_t data_len;
394 u8 data[];
395 };
396
397 struct ieee80211_mgd_assoc_data {
398 struct cfg80211_bss *bss;
399 const u8 *supp_rates;
400
401 unsigned long timeout;
402 int tries;
403
404 u16 capability;
405 u8 prev_bssid[ETH_ALEN];
406 u8 ssid[IEEE80211_MAX_SSID_LEN];
407 u8 ssid_len;
408 u8 supp_rates_len;
409 bool wmm, uapsd;
410 bool need_beacon;
411 bool synced;
412 bool timeout_started;
413
414 u8 ap_ht_param;
415
416 struct ieee80211_vht_cap ap_vht_cap;
417
418 u8 fils_nonces[2 * FILS_NONCE_LEN];
419 u8 fils_kek[FILS_MAX_KEK_LEN];
420 size_t fils_kek_len;
421
422 size_t ie_len;
423 u8 ie[];
424 };
425
426 struct ieee80211_sta_tx_tspec {
427 /* timestamp of the first packet in the time slice */
428 unsigned long time_slice_start;
429
430 u32 admitted_time; /* in usecs, unlike over the air */
431 u8 tsid;
432 s8 up; /* signed to be able to invalidate with -1 during teardown */
433
434 /* consumed TX time in microseconds in the time slice */
435 u32 consumed_tx_time;
436 enum {
437 TX_TSPEC_ACTION_NONE = 0,
438 TX_TSPEC_ACTION_DOWNGRADE,
439 TX_TSPEC_ACTION_STOP_DOWNGRADE,
440 } action;
441 bool downgraded;
442 };
443
444 DECLARE_EWMA(beacon_signal, 4, 4)
445
446 struct ieee80211_if_managed {
447 struct timer_list timer;
448 struct timer_list conn_mon_timer;
449 struct timer_list bcn_mon_timer;
450 struct timer_list chswitch_timer;
451 struct work_struct monitor_work;
452 struct work_struct chswitch_work;
453 struct work_struct beacon_connection_loss_work;
454 struct work_struct csa_connection_drop_work;
455
456 unsigned long beacon_timeout;
457 unsigned long probe_timeout;
458 int probe_send_count;
459 bool nullfunc_failed;
460 bool connection_loss;
461
462 struct cfg80211_bss *associated;
463 struct ieee80211_mgd_auth_data *auth_data;
464 struct ieee80211_mgd_assoc_data *assoc_data;
465
466 u8 bssid[ETH_ALEN] __aligned(2);
467
468 bool powersave; /* powersave requested for this iface */
469 bool broken_ap; /* AP is broken -- turn off powersave */
470 bool have_beacon;
471 u8 dtim_period;
472 enum ieee80211_smps_mode req_smps, /* requested smps mode */
473 driver_smps_mode; /* smps mode request */
474
475 struct work_struct request_smps_work;
476
477 unsigned int flags;
478
479 bool csa_waiting_bcn;
480 bool csa_ignored_same_chan;
481
482 bool beacon_crc_valid;
483 u32 beacon_crc;
484
485 bool status_acked;
486 bool status_received;
487 __le16 status_fc;
488
489 enum {
490 IEEE80211_MFP_DISABLED,
491 IEEE80211_MFP_OPTIONAL,
492 IEEE80211_MFP_REQUIRED
493 } mfp; /* management frame protection */
494
495 /*
496 * Bitmask of enabled u-apsd queues,
497 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
498 * to take effect.
499 */
500 unsigned int uapsd_queues;
501
502 /*
503 * Maximum number of buffered frames AP can deliver during a
504 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
505 * Needs a new association to take effect.
506 */
507 unsigned int uapsd_max_sp_len;
508
509 int wmm_last_param_set;
510 int mu_edca_last_param_set;
511
512 u8 use_4addr;
513
514 s16 p2p_noa_index;
515
516 struct ewma_beacon_signal ave_beacon_signal;
517
518 /*
519 * Number of Beacon frames used in ave_beacon_signal. This can be used
520 * to avoid generating less reliable cqm events that would be based
521 * only on couple of received frames.
522 */
523 unsigned int count_beacon_signal;
524
525 /* Number of times beacon loss was invoked. */
526 unsigned int beacon_loss_count;
527
528 /*
529 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
530 * that triggered a cqm event. 0 indicates that no event has been
531 * generated for the current association.
532 */
533 int last_cqm_event_signal;
534
535 /*
536 * State variables for keeping track of RSSI of the AP currently
537 * connected to and informing driver when RSSI has gone
538 * below/above a certain threshold.
539 */
540 int rssi_min_thold, rssi_max_thold;
541 int last_ave_beacon_signal;
542
543 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
544 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
545 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
546 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
547 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */
548 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */
549
550 /* TDLS support */
551 u8 tdls_peer[ETH_ALEN] __aligned(2);
552 struct delayed_work tdls_peer_del_work;
553 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
554 struct sk_buff *teardown_skb; /* A copy to send through the AP */
555 spinlock_t teardown_lock; /* To lock changing teardown_skb */
556 bool tdls_chan_switch_prohibited;
557 bool tdls_wider_bw_prohibited;
558
559 /* WMM-AC TSPEC support */
560 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
561 /* Use a separate work struct so that we can do something here
562 * while the sdata->work is flushing the queues, for example.
563 * otherwise, in scenarios where we hardly get any traffic out
564 * on the BE queue, but there's a lot of VO traffic, we might
565 * get stuck in a downgraded situation and flush takes forever.
566 */
567 struct delayed_work tx_tspec_wk;
568
569 /* Information elements from the last transmitted (Re)Association
570 * Request frame.
571 */
572 u8 *assoc_req_ies;
573 size_t assoc_req_ies_len;
574 };
575
576 struct ieee80211_if_ibss {
577 struct timer_list timer;
578 struct work_struct csa_connection_drop_work;
579
580 unsigned long last_scan_completed;
581
582 u32 basic_rates;
583
584 bool fixed_bssid;
585 bool fixed_channel;
586 bool privacy;
587
588 bool control_port;
589 bool userspace_handles_dfs;
590
591 u8 bssid[ETH_ALEN] __aligned(2);
592 u8 ssid[IEEE80211_MAX_SSID_LEN];
593 u8 ssid_len, ie_len;
594 u8 *ie;
595 struct cfg80211_chan_def chandef;
596
597 unsigned long ibss_join_req;
598 /* probe response/beacon for IBSS */
599 struct beacon_data __rcu *presp;
600
601 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
602 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
603
604 spinlock_t incomplete_lock;
605 struct list_head incomplete_stations;
606
607 enum {
608 IEEE80211_IBSS_MLME_SEARCH,
609 IEEE80211_IBSS_MLME_JOINED,
610 } state;
611 };
612
613 /**
614 * struct ieee80211_if_ocb - OCB mode state
615 *
616 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
617 * @wrkq_flags: OCB deferred task action
618 * @incomplete_lock: delayed STA insertion lock
619 * @incomplete_stations: list of STAs waiting for delayed insertion
620 * @joined: indication if the interface is connected to an OCB network
621 */
622 struct ieee80211_if_ocb {
623 struct timer_list housekeeping_timer;
624 unsigned long wrkq_flags;
625
626 spinlock_t incomplete_lock;
627 struct list_head incomplete_stations;
628
629 bool joined;
630 };
631
632 /**
633 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
634 *
635 * these declarations define the interface, which enables
636 * vendor-specific mesh synchronization
637 *
638 */
639 struct ieee802_11_elems;
640 struct ieee80211_mesh_sync_ops {
641 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
642 u16 stype,
643 struct ieee80211_mgmt *mgmt,
644 struct ieee802_11_elems *elems,
645 struct ieee80211_rx_status *rx_status);
646
647 /* should be called with beacon_data under RCU read lock */
648 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
649 struct beacon_data *beacon);
650 /* add other framework functions here */
651 };
652
653 struct mesh_csa_settings {
654 struct rcu_head rcu_head;
655 struct cfg80211_csa_settings settings;
656 };
657
658 struct ieee80211_if_mesh {
659 struct timer_list housekeeping_timer;
660 struct timer_list mesh_path_timer;
661 struct timer_list mesh_path_root_timer;
662
663 unsigned long wrkq_flags;
664 unsigned long mbss_changed;
665
666 bool userspace_handles_dfs;
667
668 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
669 size_t mesh_id_len;
670 /* Active Path Selection Protocol Identifier */
671 u8 mesh_pp_id;
672 /* Active Path Selection Metric Identifier */
673 u8 mesh_pm_id;
674 /* Congestion Control Mode Identifier */
675 u8 mesh_cc_id;
676 /* Synchronization Protocol Identifier */
677 u8 mesh_sp_id;
678 /* Authentication Protocol Identifier */
679 u8 mesh_auth_id;
680 /* Local mesh Sequence Number */
681 u32 sn;
682 /* Last used PREQ ID */
683 u32 preq_id;
684 atomic_t mpaths;
685 /* Timestamp of last SN update */
686 unsigned long last_sn_update;
687 /* Time when it's ok to send next PERR */
688 unsigned long next_perr;
689 /* Timestamp of last PREQ sent */
690 unsigned long last_preq;
691 struct mesh_rmc *rmc;
692 spinlock_t mesh_preq_queue_lock;
693 struct mesh_preq_queue preq_queue;
694 int preq_queue_len;
695 struct mesh_stats mshstats;
696 struct mesh_config mshcfg;
697 atomic_t estab_plinks;
698 u32 mesh_seqnum;
699 bool accepting_plinks;
700 int num_gates;
701 struct beacon_data __rcu *beacon;
702 const u8 *ie;
703 u8 ie_len;
704 enum {
705 IEEE80211_MESH_SEC_NONE = 0x0,
706 IEEE80211_MESH_SEC_AUTHED = 0x1,
707 IEEE80211_MESH_SEC_SECURED = 0x2,
708 } security;
709 bool user_mpm;
710 /* Extensible Synchronization Framework */
711 const struct ieee80211_mesh_sync_ops *sync_ops;
712 s64 sync_offset_clockdrift_max;
713 spinlock_t sync_offset_lock;
714 /* mesh power save */
715 enum nl80211_mesh_power_mode nonpeer_pm;
716 int ps_peers_light_sleep;
717 int ps_peers_deep_sleep;
718 struct ps_data ps;
719 /* Channel Switching Support */
720 struct mesh_csa_settings __rcu *csa;
721 enum {
722 IEEE80211_MESH_CSA_ROLE_NONE,
723 IEEE80211_MESH_CSA_ROLE_INIT,
724 IEEE80211_MESH_CSA_ROLE_REPEATER,
725 } csa_role;
726 u8 chsw_ttl;
727 u16 pre_value;
728
729 /* offset from skb->data while building IE */
730 int meshconf_offset;
731
732 struct mesh_table *mesh_paths;
733 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */
734 int mesh_paths_generation;
735 int mpp_paths_generation;
736 };
737
738 #ifdef CONFIG_MAC80211_MESH
739 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
740 do { (msh)->mshstats.name++; } while (0)
741 #else
742 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
743 do { } while (0)
744 #endif
745
746 /**
747 * enum ieee80211_sub_if_data_flags - virtual interface flags
748 *
749 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
750 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
751 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
752 * associated stations and deliver multicast frames both
753 * back to wireless media and to the local net stack.
754 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
755 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
756 */
757 enum ieee80211_sub_if_data_flags {
758 IEEE80211_SDATA_ALLMULTI = BIT(0),
759 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
760 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
761 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
762 IEEE80211_SDATA_IN_DRIVER = BIT(5),
763 };
764
765 /**
766 * enum ieee80211_sdata_state_bits - virtual interface state bits
767 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
768 * mirrors netif_running() but is separate for interface type
769 * change handling while the interface is up
770 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
771 * mode, so queues are stopped
772 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
773 * to offchannel, reset when offchannel returns
774 */
775 enum ieee80211_sdata_state_bits {
776 SDATA_STATE_RUNNING,
777 SDATA_STATE_OFFCHANNEL,
778 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
779 };
780
781 /**
782 * enum ieee80211_chanctx_mode - channel context configuration mode
783 *
784 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
785 * multiple interfaces
786 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
787 * only by a single interface. This can be used for example for
788 * non-fixed channel IBSS.
789 */
790 enum ieee80211_chanctx_mode {
791 IEEE80211_CHANCTX_SHARED,
792 IEEE80211_CHANCTX_EXCLUSIVE
793 };
794
795 /**
796 * enum ieee80211_chanctx_replace_state - channel context replacement state
797 *
798 * This is used for channel context in-place reservations that require channel
799 * context switch/swap.
800 *
801 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
802 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
803 * by a (not yet registered) channel context pointed by %replace_ctx.
804 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
805 * replaces an existing channel context pointed to by %replace_ctx.
806 */
807 enum ieee80211_chanctx_replace_state {
808 IEEE80211_CHANCTX_REPLACE_NONE,
809 IEEE80211_CHANCTX_WILL_BE_REPLACED,
810 IEEE80211_CHANCTX_REPLACES_OTHER,
811 };
812
813 struct ieee80211_chanctx {
814 struct list_head list;
815 struct rcu_head rcu_head;
816
817 struct list_head assigned_vifs;
818 struct list_head reserved_vifs;
819
820 enum ieee80211_chanctx_replace_state replace_state;
821 struct ieee80211_chanctx *replace_ctx;
822
823 enum ieee80211_chanctx_mode mode;
824 bool driver_present;
825
826 struct ieee80211_chanctx_conf conf;
827 };
828
829 struct mac80211_qos_map {
830 struct cfg80211_qos_map qos_map;
831 struct rcu_head rcu_head;
832 };
833
834 enum txq_info_flags {
835 IEEE80211_TXQ_STOP,
836 IEEE80211_TXQ_AMPDU,
837 IEEE80211_TXQ_NO_AMSDU,
838 IEEE80211_TXQ_STOP_NETIF_TX,
839 };
840
841 /**
842 * struct txq_info - per tid queue
843 *
844 * @tin: contains packets split into multiple flows
845 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
846 * a fq_flow which is already owned by a different tin
847 * @def_cvars: codel vars for @def_flow
848 * @frags: used to keep fragments created after dequeue
849 * @schedule_order: used with ieee80211_local->active_txqs
850 * @schedule_round: counter to prevent infinite loops on TXQ scheduling
851 */
852 struct txq_info {
853 struct fq_tin tin;
854 struct fq_flow def_flow;
855 struct codel_vars def_cvars;
856 struct codel_stats cstats;
857 struct sk_buff_head frags;
858 struct list_head schedule_order;
859 u16 schedule_round;
860 unsigned long flags;
861
862 /* keep last! */
863 struct ieee80211_txq txq;
864 };
865
866 struct ieee80211_if_mntr {
867 u32 flags;
868 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
869
870 struct list_head list;
871 };
872
873 /**
874 * struct ieee80211_if_nan - NAN state
875 *
876 * @conf: current NAN configuration
877 * @func_ids: a bitmap of available instance_id's
878 */
879 struct ieee80211_if_nan {
880 struct cfg80211_nan_conf conf;
881
882 /* protects function_inst_ids */
883 spinlock_t func_lock;
884 struct idr function_inst_ids;
885 };
886
887 struct ieee80211_sub_if_data {
888 struct list_head list;
889
890 struct wireless_dev wdev;
891
892 /* keys */
893 struct list_head key_list;
894
895 /* count for keys needing tailroom space allocation */
896 int crypto_tx_tailroom_needed_cnt;
897 int crypto_tx_tailroom_pending_dec;
898 struct delayed_work dec_tailroom_needed_wk;
899
900 struct net_device *dev;
901 struct ieee80211_local *local;
902
903 unsigned int flags;
904
905 unsigned long state;
906
907 char name[IFNAMSIZ];
908
909 /* Fragment table for host-based reassembly */
910 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
911 unsigned int fragment_next;
912
913 /* TID bitmap for NoAck policy */
914 u16 noack_map;
915
916 /* bit field of ACM bits (BIT(802.1D tag)) */
917 u8 wmm_acm;
918
919 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS +
920 NUM_DEFAULT_MGMT_KEYS +
921 NUM_DEFAULT_BEACON_KEYS];
922 struct ieee80211_key __rcu *default_unicast_key;
923 struct ieee80211_key __rcu *default_multicast_key;
924 struct ieee80211_key __rcu *default_mgmt_key;
925 struct ieee80211_key __rcu *default_beacon_key;
926
927 u16 sequence_number;
928 __be16 control_port_protocol;
929 bool control_port_no_encrypt;
930 bool control_port_no_preauth;
931 bool control_port_over_nl80211;
932 int encrypt_headroom;
933
934 atomic_t num_tx_queued;
935 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
936 struct mac80211_qos_map __rcu *qos_map;
937
938 struct work_struct csa_finalize_work;
939 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
940 struct cfg80211_chan_def csa_chandef;
941
942 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
943 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
944
945 /* context reservation -- protected with chanctx_mtx */
946 struct ieee80211_chanctx *reserved_chanctx;
947 struct cfg80211_chan_def reserved_chandef;
948 bool reserved_radar_required;
949 bool reserved_ready;
950
951 /* used to reconfigure hardware SM PS */
952 struct work_struct recalc_smps;
953
954 struct work_struct work;
955 struct sk_buff_head skb_queue;
956
957 u8 needed_rx_chains;
958 enum ieee80211_smps_mode smps_mode;
959
960 int user_power_level; /* in dBm */
961 int ap_power_level; /* in dBm */
962
963 bool radar_required;
964 struct delayed_work dfs_cac_timer_work;
965
966 /*
967 * AP this belongs to: self in AP mode and
968 * corresponding AP in VLAN mode, NULL for
969 * all others (might be needed later in IBSS)
970 */
971 struct ieee80211_if_ap *bss;
972
973 /* bitmap of allowed (non-MCS) rate indexes for rate control */
974 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
975
976 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
977 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
978
979 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
980 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
981
982 /* Beacon frame (non-MCS) rate (as a bitmap) */
983 u32 beacon_rateidx_mask[NUM_NL80211_BANDS];
984 bool beacon_rate_set;
985
986 union {
987 struct ieee80211_if_ap ap;
988 struct ieee80211_if_wds wds;
989 struct ieee80211_if_vlan vlan;
990 struct ieee80211_if_managed mgd;
991 struct ieee80211_if_ibss ibss;
992 struct ieee80211_if_mesh mesh;
993 struct ieee80211_if_ocb ocb;
994 struct ieee80211_if_mntr mntr;
995 struct ieee80211_if_nan nan;
996 } u;
997
998 #ifdef CONFIG_MAC80211_DEBUGFS
999 struct {
1000 struct dentry *subdir_stations;
1001 struct dentry *default_unicast_key;
1002 struct dentry *default_multicast_key;
1003 struct dentry *default_mgmt_key;
1004 struct dentry *default_beacon_key;
1005 } debugfs;
1006 #endif
1007
1008 /* must be last, dynamically sized area in this! */
1009 struct ieee80211_vif vif;
1010 };
1011
1012 static inline
vif_to_sdata(struct ieee80211_vif * p)1013 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
1014 {
1015 return container_of(p, struct ieee80211_sub_if_data, vif);
1016 }
1017
sdata_lock(struct ieee80211_sub_if_data * sdata)1018 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
1019 __acquires(&sdata->wdev.mtx)
1020 {
1021 mutex_lock(&sdata->wdev.mtx);
1022 __acquire(&sdata->wdev.mtx);
1023 }
1024
sdata_unlock(struct ieee80211_sub_if_data * sdata)1025 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
1026 __releases(&sdata->wdev.mtx)
1027 {
1028 mutex_unlock(&sdata->wdev.mtx);
1029 __release(&sdata->wdev.mtx);
1030 }
1031
1032 #define sdata_dereference(p, sdata) \
1033 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
1034
1035 static inline void
sdata_assert_lock(struct ieee80211_sub_if_data * sdata)1036 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
1037 {
1038 lockdep_assert_held(&sdata->wdev.mtx);
1039 }
1040
1041 static inline int
ieee80211_chandef_get_shift(struct cfg80211_chan_def * chandef)1042 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1043 {
1044 switch (chandef->width) {
1045 case NL80211_CHAN_WIDTH_5:
1046 return 2;
1047 case NL80211_CHAN_WIDTH_10:
1048 return 1;
1049 default:
1050 return 0;
1051 }
1052 }
1053
1054 static inline int
ieee80211_vif_get_shift(struct ieee80211_vif * vif)1055 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1056 {
1057 struct ieee80211_chanctx_conf *chanctx_conf;
1058 int shift = 0;
1059
1060 rcu_read_lock();
1061 chanctx_conf = rcu_dereference(vif->chanctx_conf);
1062 if (chanctx_conf)
1063 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1064 rcu_read_unlock();
1065
1066 return shift;
1067 }
1068
1069 enum {
1070 IEEE80211_RX_MSG = 1,
1071 IEEE80211_TX_STATUS_MSG = 2,
1072 };
1073
1074 enum queue_stop_reason {
1075 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1076 IEEE80211_QUEUE_STOP_REASON_PS,
1077 IEEE80211_QUEUE_STOP_REASON_CSA,
1078 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1079 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1080 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1081 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1082 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1083 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1084 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1085
1086 IEEE80211_QUEUE_STOP_REASONS,
1087 };
1088
1089 #ifdef CONFIG_MAC80211_LEDS
1090 struct tpt_led_trigger {
1091 char name[32];
1092 const struct ieee80211_tpt_blink *blink_table;
1093 unsigned int blink_table_len;
1094 struct timer_list timer;
1095 struct ieee80211_local *local;
1096 unsigned long prev_traffic;
1097 unsigned long tx_bytes, rx_bytes;
1098 unsigned int active, want;
1099 bool running;
1100 };
1101 #endif
1102
1103 /**
1104 * mac80211 scan flags - currently active scan mode
1105 *
1106 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1107 * well be on the operating channel
1108 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1109 * determine if we are on the operating channel or not
1110 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1111 * channel. This should not interrupt normal traffic.
1112 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1113 * that the scan completed.
1114 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1115 * a scan complete for an aborted scan.
1116 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1117 * cancelled.
1118 */
1119 enum {
1120 SCAN_SW_SCANNING,
1121 SCAN_HW_SCANNING,
1122 SCAN_ONCHANNEL_SCANNING,
1123 SCAN_COMPLETED,
1124 SCAN_ABORTED,
1125 SCAN_HW_CANCELLED,
1126 };
1127
1128 /**
1129 * enum mac80211_scan_state - scan state machine states
1130 *
1131 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1132 * determines if we should keep on scanning or switch back to the
1133 * operating channel
1134 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1135 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1136 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1137 * send out data
1138 * @SCAN_RESUME: Resume the scan and scan the next channel
1139 * @SCAN_ABORT: Abort the scan and go back to operating channel
1140 */
1141 enum mac80211_scan_state {
1142 SCAN_DECISION,
1143 SCAN_SET_CHANNEL,
1144 SCAN_SEND_PROBE,
1145 SCAN_SUSPEND,
1146 SCAN_RESUME,
1147 SCAN_ABORT,
1148 };
1149
1150 struct ieee80211_local {
1151 /* embed the driver visible part.
1152 * don't cast (use the static inlines below), but we keep
1153 * it first anyway so they become a no-op */
1154 struct ieee80211_hw hw;
1155
1156 struct fq fq;
1157 struct codel_vars *cvars;
1158 struct codel_params cparams;
1159
1160 /* protects active_txqs and txqi->schedule_order */
1161 spinlock_t active_txq_lock[IEEE80211_NUM_ACS];
1162 struct list_head active_txqs[IEEE80211_NUM_ACS];
1163 u16 schedule_round[IEEE80211_NUM_ACS];
1164
1165 u16 airtime_flags;
1166 u32 aql_txq_limit_low[IEEE80211_NUM_ACS];
1167 u32 aql_txq_limit_high[IEEE80211_NUM_ACS];
1168 u32 aql_threshold;
1169 atomic_t aql_total_pending_airtime;
1170
1171 const struct ieee80211_ops *ops;
1172
1173 /*
1174 * private workqueue to mac80211. mac80211 makes this accessible
1175 * via ieee80211_queue_work()
1176 */
1177 struct workqueue_struct *workqueue;
1178
1179 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1180 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1181 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1182 spinlock_t queue_stop_reason_lock;
1183
1184 int open_count;
1185 int monitors, cooked_mntrs;
1186 /* number of interfaces with corresponding FIF_ flags */
1187 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1188 fif_probe_req;
1189 bool probe_req_reg;
1190 bool rx_mcast_action_reg;
1191 unsigned int filter_flags; /* FIF_* */
1192
1193 bool wiphy_ciphers_allocated;
1194
1195 bool use_chanctx;
1196
1197 /* protects the aggregated multicast list and filter calls */
1198 spinlock_t filter_lock;
1199
1200 /* used for uploading changed mc list */
1201 struct work_struct reconfig_filter;
1202
1203 /* aggregated multicast list */
1204 struct netdev_hw_addr_list mc_list;
1205
1206 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1207
1208 /*
1209 * suspended is true if we finished all the suspend _and_ we have
1210 * not yet come up from resume. This is to be used by mac80211
1211 * to ensure driver sanity during suspend and mac80211's own
1212 * sanity. It can eventually be used for WoW as well.
1213 */
1214 bool suspended;
1215
1216 /*
1217 * Resuming is true while suspended, but when we're reprogramming the
1218 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1219 * again even though some other parts of the stack are still suspended
1220 * and we still drop received frames to avoid waking the stack.
1221 */
1222 bool resuming;
1223
1224 /*
1225 * quiescing is true during the suspend process _only_ to
1226 * ease timer cancelling etc.
1227 */
1228 bool quiescing;
1229
1230 /* device is started */
1231 bool started;
1232
1233 /* device is during a HW reconfig */
1234 bool in_reconfig;
1235
1236 /* wowlan is enabled -- don't reconfig on resume */
1237 bool wowlan;
1238
1239 struct work_struct radar_detected_work;
1240
1241 /* number of RX chains the hardware has */
1242 u8 rx_chains;
1243
1244 /* bitmap of which sbands were copied */
1245 u8 sband_allocated;
1246
1247 int tx_headroom; /* required headroom for hardware/radiotap */
1248
1249 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1250 * added to skb_queue will be processed, but frames in
1251 * skb_queue_unreliable may be dropped if the total length of these
1252 * queues increases over the limit. */
1253 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1254 struct tasklet_struct tasklet;
1255 struct sk_buff_head skb_queue;
1256 struct sk_buff_head skb_queue_unreliable;
1257
1258 spinlock_t rx_path_lock;
1259
1260 /* Station data */
1261 /*
1262 * The mutex only protects the list, hash table and
1263 * counter, reads are done with RCU.
1264 */
1265 struct mutex sta_mtx;
1266 spinlock_t tim_lock;
1267 unsigned long num_sta;
1268 struct list_head sta_list;
1269 struct rhltable sta_hash;
1270 struct timer_list sta_cleanup;
1271 int sta_generation;
1272
1273 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1274 struct tasklet_struct tx_pending_tasklet;
1275 struct tasklet_struct wake_txqs_tasklet;
1276
1277 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1278
1279 /* number of interfaces with allmulti RX */
1280 atomic_t iff_allmultis;
1281
1282 struct rate_control_ref *rate_ctrl;
1283
1284 struct arc4_ctx wep_tx_ctx;
1285 struct arc4_ctx wep_rx_ctx;
1286 u32 wep_iv;
1287
1288 /* see iface.c */
1289 struct list_head interfaces;
1290 struct list_head mon_list; /* only that are IFF_UP && !cooked */
1291 struct mutex iflist_mtx;
1292
1293 /*
1294 * Key mutex, protects sdata's key_list and sta_info's
1295 * key pointers and ptk_idx (write access, they're RCU.)
1296 */
1297 struct mutex key_mtx;
1298
1299 /* mutex for scan and work locking */
1300 struct mutex mtx;
1301
1302 /* Scanning and BSS list */
1303 unsigned long scanning;
1304 struct cfg80211_ssid scan_ssid;
1305 struct cfg80211_scan_request *int_scan_req;
1306 struct cfg80211_scan_request __rcu *scan_req;
1307 struct ieee80211_scan_request *hw_scan_req;
1308 struct cfg80211_chan_def scan_chandef;
1309 enum nl80211_band hw_scan_band;
1310 int scan_channel_idx;
1311 int scan_ies_len;
1312 int hw_scan_ies_bufsize;
1313 struct cfg80211_scan_info scan_info;
1314
1315 struct work_struct sched_scan_stopped_work;
1316 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1317 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1318 u8 scan_addr[ETH_ALEN];
1319
1320 unsigned long leave_oper_channel_time;
1321 enum mac80211_scan_state next_scan_state;
1322 struct delayed_work scan_work;
1323 struct ieee80211_sub_if_data __rcu *scan_sdata;
1324 /* For backward compatibility only -- do not use */
1325 struct cfg80211_chan_def _oper_chandef;
1326
1327 /* Temporary remain-on-channel for off-channel operations */
1328 struct ieee80211_channel *tmp_channel;
1329
1330 /* channel contexts */
1331 struct list_head chanctx_list;
1332 struct mutex chanctx_mtx;
1333
1334 #ifdef CONFIG_MAC80211_LEDS
1335 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1336 struct led_trigger tpt_led;
1337 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1338 atomic_t radio_led_active, tpt_led_active;
1339 struct tpt_led_trigger *tpt_led_trigger;
1340 #endif
1341
1342 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1343 /* SNMP counters */
1344 /* dot11CountersTable */
1345 u32 dot11TransmittedFragmentCount;
1346 u32 dot11MulticastTransmittedFrameCount;
1347 u32 dot11FailedCount;
1348 u32 dot11RetryCount;
1349 u32 dot11MultipleRetryCount;
1350 u32 dot11FrameDuplicateCount;
1351 u32 dot11ReceivedFragmentCount;
1352 u32 dot11MulticastReceivedFrameCount;
1353 u32 dot11TransmittedFrameCount;
1354
1355 /* TX/RX handler statistics */
1356 unsigned int tx_handlers_drop;
1357 unsigned int tx_handlers_queued;
1358 unsigned int tx_handlers_drop_wep;
1359 unsigned int tx_handlers_drop_not_assoc;
1360 unsigned int tx_handlers_drop_unauth_port;
1361 unsigned int rx_handlers_drop;
1362 unsigned int rx_handlers_queued;
1363 unsigned int rx_handlers_drop_nullfunc;
1364 unsigned int rx_handlers_drop_defrag;
1365 unsigned int tx_expand_skb_head;
1366 unsigned int tx_expand_skb_head_cloned;
1367 unsigned int rx_expand_skb_head_defrag;
1368 unsigned int rx_handlers_fragments;
1369 unsigned int tx_status_drop;
1370 #define I802_DEBUG_INC(c) (c)++
1371 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1372 #define I802_DEBUG_INC(c) do { } while (0)
1373 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1374
1375
1376 int total_ps_buffered; /* total number of all buffered unicast and
1377 * multicast packets for power saving stations
1378 */
1379
1380 bool pspolling;
1381 /*
1382 * PS can only be enabled when we have exactly one managed
1383 * interface (and monitors) in PS, this then points there.
1384 */
1385 struct ieee80211_sub_if_data *ps_sdata;
1386 struct work_struct dynamic_ps_enable_work;
1387 struct work_struct dynamic_ps_disable_work;
1388 struct timer_list dynamic_ps_timer;
1389 struct notifier_block ifa_notifier;
1390 struct notifier_block ifa6_notifier;
1391
1392 /*
1393 * The dynamic ps timeout configured from user space via WEXT -
1394 * this will override whatever chosen by mac80211 internally.
1395 */
1396 int dynamic_ps_forced_timeout;
1397
1398 int user_power_level; /* in dBm, for all interfaces */
1399
1400 enum ieee80211_smps_mode smps_mode;
1401
1402 struct work_struct restart_work;
1403
1404 #ifdef CONFIG_MAC80211_DEBUGFS
1405 struct local_debugfsdentries {
1406 struct dentry *rcdir;
1407 struct dentry *keys;
1408 } debugfs;
1409 bool force_tx_status;
1410 #endif
1411
1412 /*
1413 * Remain-on-channel support
1414 */
1415 struct delayed_work roc_work;
1416 struct list_head roc_list;
1417 struct work_struct hw_roc_start, hw_roc_done;
1418 unsigned long hw_roc_start_time;
1419 u64 roc_cookie_counter;
1420
1421 struct idr ack_status_frames;
1422 spinlock_t ack_status_lock;
1423
1424 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1425
1426 /* virtual monitor interface */
1427 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1428 struct cfg80211_chan_def monitor_chandef;
1429
1430 /* extended capabilities provided by mac80211 */
1431 u8 ext_capa[8];
1432
1433 /* TDLS channel switch */
1434 struct work_struct tdls_chsw_work;
1435 struct sk_buff_head skb_queue_tdls_chsw;
1436 };
1437
1438 static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(struct net_device * dev)1439 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1440 {
1441 return netdev_priv(dev);
1442 }
1443
1444 static inline struct ieee80211_sub_if_data *
IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev * wdev)1445 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1446 {
1447 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1448 }
1449
1450 static inline struct ieee80211_supported_band *
ieee80211_get_sband(struct ieee80211_sub_if_data * sdata)1451 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1452 {
1453 struct ieee80211_local *local = sdata->local;
1454 struct ieee80211_chanctx_conf *chanctx_conf;
1455 enum nl80211_band band;
1456
1457 rcu_read_lock();
1458 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1459
1460 if (WARN_ON_ONCE(!chanctx_conf)) {
1461 rcu_read_unlock();
1462 return NULL;
1463 }
1464
1465 band = chanctx_conf->def.chan->band;
1466 rcu_read_unlock();
1467
1468 return local->hw.wiphy->bands[band];
1469 }
1470
1471 /* this struct holds the value parsing from channel switch IE */
1472 struct ieee80211_csa_ie {
1473 struct cfg80211_chan_def chandef;
1474 u8 mode;
1475 u8 count;
1476 u8 ttl;
1477 u16 pre_value;
1478 u16 reason_code;
1479 u32 max_switch_time;
1480 };
1481
1482 /* Parsed Information Elements */
1483 struct ieee802_11_elems {
1484 const u8 *ie_start;
1485 size_t total_len;
1486
1487 /* pointers to IEs */
1488 const struct ieee80211_tdls_lnkie *lnk_id;
1489 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1490 const u8 *ext_capab;
1491 const u8 *ssid;
1492 const u8 *supp_rates;
1493 const u8 *ds_params;
1494 const struct ieee80211_tim_ie *tim;
1495 const u8 *challenge;
1496 const u8 *rsn;
1497 const u8 *rsnx;
1498 const u8 *erp_info;
1499 const u8 *ext_supp_rates;
1500 const u8 *wmm_info;
1501 const u8 *wmm_param;
1502 const struct ieee80211_ht_cap *ht_cap_elem;
1503 const struct ieee80211_ht_operation *ht_operation;
1504 const struct ieee80211_vht_cap *vht_cap_elem;
1505 const struct ieee80211_vht_operation *vht_operation;
1506 const struct ieee80211_meshconf_ie *mesh_config;
1507 const u8 *he_cap;
1508 const struct ieee80211_he_operation *he_operation;
1509 const struct ieee80211_he_spr *he_spr;
1510 const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1511 const struct ieee80211_he_6ghz_capa *he_6ghz_capa;
1512 const u8 *uora_element;
1513 const u8 *mesh_id;
1514 const u8 *peering;
1515 const __le16 *awake_window;
1516 const u8 *preq;
1517 const u8 *prep;
1518 const u8 *perr;
1519 const struct ieee80211_rann_ie *rann;
1520 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1521 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1522 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1523 const u8 *max_channel_switch_time;
1524 const u8 *country_elem;
1525 const u8 *pwr_constr_elem;
1526 const u8 *cisco_dtpc_elem;
1527 const struct ieee80211_timeout_interval_ie *timeout_int;
1528 const u8 *opmode_notif;
1529 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1530 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1531 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1532 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
1533 const struct ieee80211_bssid_index *bssid_index;
1534 u8 max_bssid_indicator;
1535 u8 dtim_count;
1536 u8 dtim_period;
1537 const struct ieee80211_addba_ext_ie *addba_ext_ie;
1538 const struct ieee80211_s1g_cap *s1g_capab;
1539 const struct ieee80211_s1g_oper_ie *s1g_oper;
1540 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat;
1541 const struct ieee80211_aid_response_ie *aid_resp;
1542
1543 /* length of them, respectively */
1544 u8 ext_capab_len;
1545 u8 ssid_len;
1546 u8 supp_rates_len;
1547 u8 tim_len;
1548 u8 challenge_len;
1549 u8 rsn_len;
1550 u8 rsnx_len;
1551 u8 ext_supp_rates_len;
1552 u8 wmm_info_len;
1553 u8 wmm_param_len;
1554 u8 he_cap_len;
1555 u8 mesh_id_len;
1556 u8 peering_len;
1557 u8 preq_len;
1558 u8 prep_len;
1559 u8 perr_len;
1560 u8 country_elem_len;
1561 u8 bssid_index_len;
1562
1563 /* whether a parse error occurred while retrieving these elements */
1564 bool parse_error;
1565 };
1566
hw_to_local(struct ieee80211_hw * hw)1567 static inline struct ieee80211_local *hw_to_local(
1568 struct ieee80211_hw *hw)
1569 {
1570 return container_of(hw, struct ieee80211_local, hw);
1571 }
1572
to_txq_info(struct ieee80211_txq * txq)1573 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1574 {
1575 return container_of(txq, struct txq_info, txq);
1576 }
1577
txq_has_queue(struct ieee80211_txq * txq)1578 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1579 {
1580 struct txq_info *txqi = to_txq_info(txq);
1581
1582 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1583 }
1584
ieee80211_bssid_match(const u8 * raddr,const u8 * addr)1585 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1586 {
1587 return ether_addr_equal(raddr, addr) ||
1588 is_broadcast_ether_addr(raddr);
1589 }
1590
1591 static inline bool
ieee80211_have_rx_timestamp(struct ieee80211_rx_status * status)1592 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1593 {
1594 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1595 status->flag & RX_FLAG_MACTIME_END);
1596 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END))
1597 return true;
1598 /* can't handle non-legacy preamble yet */
1599 if (status->flag & RX_FLAG_MACTIME_PLCP_START &&
1600 status->encoding == RX_ENC_LEGACY)
1601 return true;
1602 return false;
1603 }
1604
1605 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1606 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1607
1608 /* This function returns the number of multicast stations connected to this
1609 * interface. It returns -1 if that number is not tracked, that is for netdevs
1610 * not in AP or AP_VLAN mode or when using 4addr.
1611 */
1612 static inline int
ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data * sdata)1613 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1614 {
1615 if (sdata->vif.type == NL80211_IFTYPE_AP)
1616 return atomic_read(&sdata->u.ap.num_mcast_sta);
1617 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1618 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1619 return -1;
1620 }
1621
1622 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1623 struct ieee80211_rx_status *status,
1624 unsigned int mpdu_len,
1625 unsigned int mpdu_offset);
1626 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1627 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1628 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1629 u32 changed);
1630 void ieee80211_configure_filter(struct ieee80211_local *local);
1631 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1632
1633 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1634 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1635 u64 *cookie, gfp_t gfp);
1636
1637 void ieee80211_check_fast_rx(struct sta_info *sta);
1638 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1639 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1640 void ieee80211_clear_fast_rx(struct sta_info *sta);
1641
1642 /* STA code */
1643 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1644 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1645 struct cfg80211_auth_request *req);
1646 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1647 struct cfg80211_assoc_request *req);
1648 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1649 struct cfg80211_deauth_request *req);
1650 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1651 struct cfg80211_disassoc_request *req);
1652 void ieee80211_send_pspoll(struct ieee80211_local *local,
1653 struct ieee80211_sub_if_data *sdata);
1654 void ieee80211_recalc_ps(struct ieee80211_local *local);
1655 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1656 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1657 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1658 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1659 struct sk_buff *skb);
1660 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
1661 struct sk_buff *skb);
1662 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1663 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1664 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1665 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1666 __le16 fc, bool acked);
1667 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1668 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1669 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1670
1671 /* IBSS code */
1672 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1673 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1674 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1675 const u8 *bssid, const u8 *addr, u32 supp_rates);
1676 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1677 struct cfg80211_ibss_params *params);
1678 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1679 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1680 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1681 struct sk_buff *skb);
1682 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1683 struct cfg80211_csa_settings *csa_settings);
1684 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1685 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1686
1687 /* OCB code */
1688 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1689 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1690 const u8 *bssid, const u8 *addr, u32 supp_rates);
1691 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1692 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1693 struct ocb_setup *setup);
1694 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1695
1696 /* mesh code */
1697 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1698 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1699 struct sk_buff *skb);
1700 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1701 struct cfg80211_csa_settings *csa_settings);
1702 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1703
1704 /* scan/BSS handling */
1705 void ieee80211_scan_work(struct work_struct *work);
1706 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1707 const u8 *ssid, u8 ssid_len,
1708 struct ieee80211_channel **channels,
1709 unsigned int n_channels,
1710 enum nl80211_bss_scan_width scan_width);
1711 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1712 struct cfg80211_scan_request *req);
1713 void ieee80211_scan_cancel(struct ieee80211_local *local);
1714 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1715 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1716
1717 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1718 struct ieee80211_bss *
1719 ieee80211_bss_info_update(struct ieee80211_local *local,
1720 struct ieee80211_rx_status *rx_status,
1721 struct ieee80211_mgmt *mgmt,
1722 size_t len,
1723 struct ieee80211_channel *channel);
1724 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1725 struct ieee80211_bss *bss);
1726
1727 /* scheduled scan handling */
1728 int
1729 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1730 struct cfg80211_sched_scan_request *req);
1731 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1732 struct cfg80211_sched_scan_request *req);
1733 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1734 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1735 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1736
1737 /* off-channel/mgmt-tx */
1738 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1739 void ieee80211_offchannel_return(struct ieee80211_local *local);
1740 void ieee80211_roc_setup(struct ieee80211_local *local);
1741 void ieee80211_start_next_roc(struct ieee80211_local *local);
1742 void ieee80211_roc_purge(struct ieee80211_local *local,
1743 struct ieee80211_sub_if_data *sdata);
1744 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1745 struct ieee80211_channel *chan,
1746 unsigned int duration, u64 *cookie);
1747 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1748 struct wireless_dev *wdev, u64 cookie);
1749 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1750 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1751 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1752 struct wireless_dev *wdev, u64 cookie);
1753
1754 /* channel switch handling */
1755 void ieee80211_csa_finalize_work(struct work_struct *work);
1756 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1757 struct cfg80211_csa_settings *params);
1758
1759 /* interface handling */
1760 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
1761 NETIF_F_HW_CSUM | NETIF_F_SG | \
1762 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE)
1763 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM)
1764 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \
1765 MAC80211_SUPPORTED_FEATURES_RX)
1766
1767 int ieee80211_iface_init(void);
1768 void ieee80211_iface_exit(void);
1769 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1770 unsigned char name_assign_type,
1771 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1772 struct vif_params *params);
1773 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1774 enum nl80211_iftype type);
1775 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1776 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1777 u32 ieee80211_idle_off(struct ieee80211_local *local);
1778 void ieee80211_recalc_idle(struct ieee80211_local *local);
1779 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1780 const int offset);
1781 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1782 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1783 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1784 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1785
1786 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1787 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1788 bool update_bss);
1789 void ieee80211_recalc_offload(struct ieee80211_local *local);
1790
ieee80211_sdata_running(struct ieee80211_sub_if_data * sdata)1791 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1792 {
1793 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1794 }
1795
1796 /* tx handling */
1797 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1798 void ieee80211_tx_pending(unsigned long data);
1799 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1800 struct net_device *dev);
1801 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1802 struct net_device *dev);
1803 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb,
1804 struct net_device *dev);
1805 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1806 struct net_device *dev,
1807 u32 info_flags,
1808 u32 ctrl_flags,
1809 u64 *cookie);
1810 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1811 struct sk_buff_head *skbs);
1812 struct sk_buff *
1813 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1814 struct sk_buff *skb, u32 info_flags);
1815 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1816 struct ieee80211_supported_band *sband,
1817 int retry_count, int shift, bool send_to_cooked,
1818 struct ieee80211_tx_status *status);
1819
1820 void ieee80211_check_fast_xmit(struct sta_info *sta);
1821 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1822 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1823 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1824 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
1825 const u8 *buf, size_t len,
1826 const u8 *dest, __be16 proto, bool unencrypted,
1827 u64 *cookie);
1828 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
1829 const u8 *buf, size_t len);
1830
1831 /* HT */
1832 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1833 struct ieee80211_sta_ht_cap *ht_cap);
1834 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1835 struct ieee80211_supported_band *sband,
1836 const struct ieee80211_ht_cap *ht_cap_ie,
1837 struct sta_info *sta);
1838 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1839 const u8 *da, u16 tid,
1840 u16 initiator, u16 reason_code);
1841 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1842 enum ieee80211_smps_mode smps, const u8 *da,
1843 const u8 *bssid);
1844 void ieee80211_request_smps_ap_work(struct work_struct *work);
1845 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1846 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1847 enum ieee80211_smps_mode smps_mode_new);
1848
1849 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1850 u16 initiator, u16 reason, bool stop);
1851 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1852 u16 initiator, u16 reason, bool stop);
1853 void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
1854 u8 dialog_token, u16 timeout,
1855 u16 start_seq_num, u16 ba_policy, u16 tid,
1856 u16 buf_size, bool tx, bool auto_seq,
1857 const struct ieee80211_addba_ext_ie *addbaext);
1858 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1859 enum ieee80211_agg_stop_reason reason);
1860 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1861 struct sta_info *sta,
1862 struct ieee80211_mgmt *mgmt, size_t len);
1863 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1864 struct sta_info *sta,
1865 struct ieee80211_mgmt *mgmt,
1866 size_t len);
1867 void ieee80211_process_addba_request(struct ieee80211_local *local,
1868 struct sta_info *sta,
1869 struct ieee80211_mgmt *mgmt,
1870 size_t len);
1871
1872 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1873 enum ieee80211_agg_stop_reason reason);
1874 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1875 enum ieee80211_agg_stop_reason reason);
1876 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
1877 struct tid_ampdu_tx *tid_tx);
1878 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
1879 struct tid_ampdu_tx *tid_tx);
1880 void ieee80211_ba_session_work(struct work_struct *work);
1881 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1882 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1883
1884 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1885 enum nl80211_smps_mode
1886 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
1887
1888 /* VHT */
1889 void
1890 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1891 struct ieee80211_supported_band *sband,
1892 const struct ieee80211_vht_cap *vht_cap_ie,
1893 struct sta_info *sta);
1894 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1895 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1896 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1897 enum ieee80211_sta_rx_bandwidth
1898 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
1899 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
1900 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1901 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
1902 struct ieee80211_mgmt *mgmt);
1903 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1904 struct sta_info *sta, u8 opmode,
1905 enum nl80211_band band);
1906 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1907 struct sta_info *sta, u8 opmode,
1908 enum nl80211_band band);
1909 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1910 struct ieee80211_sta_vht_cap *vht_cap);
1911 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
1912 u16 vht_mask[NL80211_VHT_NSS_MAX]);
1913 enum nl80211_chan_width
1914 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta);
1915
1916 /* HE */
1917 void
1918 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
1919 struct ieee80211_supported_band *sband,
1920 const u8 *he_cap_ie, u8 he_cap_len,
1921 const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
1922 struct sta_info *sta);
1923 void
1924 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
1925 const struct ieee80211_he_spr *he_spr_ie_elem);
1926
1927 void
1928 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
1929 const struct ieee80211_he_operation *he_op_ie_elem);
1930
1931 /* S1G */
1932 void ieee80211_s1g_sta_rate_init(struct sta_info *sta);
1933
1934 /* Spectrum management */
1935 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1936 struct ieee80211_mgmt *mgmt,
1937 size_t len);
1938 /**
1939 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1940 * @sdata: the sdata of the interface which has received the frame
1941 * @elems: parsed 802.11 elements received with the frame
1942 * @current_band: indicates the current band
1943 * @vht_cap_info: VHT capabilities of the transmitter
1944 * @sta_flags: contains information about own capabilities and restrictions
1945 * to decide which channel switch announcements can be accepted. Only the
1946 * following subset of &enum ieee80211_sta_flags are evaluated:
1947 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1948 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1949 * %IEEE80211_STA_DISABLE_160MHZ.
1950 * @bssid: the currently connected bssid (for reporting)
1951 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1952 All of them will be filled with if success only.
1953 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1954 */
1955 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1956 struct ieee802_11_elems *elems,
1957 enum nl80211_band current_band,
1958 u32 vht_cap_info,
1959 u32 sta_flags, u8 *bssid,
1960 struct ieee80211_csa_ie *csa_ie);
1961
1962 /* Suspend/resume and hw reconfiguration */
1963 int ieee80211_reconfig(struct ieee80211_local *local);
1964 void ieee80211_stop_device(struct ieee80211_local *local);
1965
1966 int __ieee80211_suspend(struct ieee80211_hw *hw,
1967 struct cfg80211_wowlan *wowlan);
1968
__ieee80211_resume(struct ieee80211_hw * hw)1969 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1970 {
1971 struct ieee80211_local *local = hw_to_local(hw);
1972
1973 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
1974 !test_bit(SCAN_COMPLETED, &local->scanning),
1975 "%s: resume with hardware scan still in progress\n",
1976 wiphy_name(hw->wiphy));
1977
1978 return ieee80211_reconfig(hw_to_local(hw));
1979 }
1980
1981 /* utility functions/constants */
1982 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1983 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
1984 int rate, int erp, int short_preamble,
1985 int shift);
1986 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1987 struct ieee80211_tx_queue_params *qparam,
1988 int ac);
1989 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1990 bool bss_notify, bool enable_qos);
1991 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
1992 struct sta_info *sta, struct sk_buff *skb);
1993
1994 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1995 struct sk_buff *skb, int tid,
1996 enum nl80211_band band);
1997
1998 /* sta_out needs to be checked for ERR_PTR() before using */
1999 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata,
2000 struct sk_buff *skb,
2001 struct sta_info **sta_out);
2002
2003 static inline void
ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid,enum nl80211_band band)2004 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2005 struct sk_buff *skb, int tid,
2006 enum nl80211_band band)
2007 {
2008 rcu_read_lock();
2009 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
2010 rcu_read_unlock();
2011 }
2012
ieee80211_tx_skb_tid(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid)2013 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
2014 struct sk_buff *skb, int tid)
2015 {
2016 struct ieee80211_chanctx_conf *chanctx_conf;
2017
2018 rcu_read_lock();
2019 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2020 if (WARN_ON(!chanctx_conf)) {
2021 rcu_read_unlock();
2022 kfree_skb(skb);
2023 return;
2024 }
2025
2026 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
2027 chanctx_conf->def.chan->band);
2028 rcu_read_unlock();
2029 }
2030
ieee80211_tx_skb(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb)2031 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
2032 struct sk_buff *skb)
2033 {
2034 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
2035 ieee80211_tx_skb_tid(sdata, skb, 7);
2036 }
2037
2038 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
2039 struct ieee802_11_elems *elems,
2040 u64 filter, u32 crc, u8 *transmitter_bssid,
2041 u8 *bss_bssid);
ieee802_11_parse_elems(const u8 * start,size_t len,bool action,struct ieee802_11_elems * elems,u8 * transmitter_bssid,u8 * bss_bssid)2042 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
2043 bool action,
2044 struct ieee802_11_elems *elems,
2045 u8 *transmitter_bssid,
2046 u8 *bss_bssid)
2047 {
2048 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0,
2049 transmitter_bssid, bss_bssid);
2050 }
2051
2052
2053 extern const int ieee802_1d_to_ac[8];
2054
ieee80211_ac_from_tid(int tid)2055 static inline int ieee80211_ac_from_tid(int tid)
2056 {
2057 return ieee802_1d_to_ac[tid & 7];
2058 }
2059
2060 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
2061 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
2062 void ieee80211_dynamic_ps_timer(struct timer_list *t);
2063 void ieee80211_send_nullfunc(struct ieee80211_local *local,
2064 struct ieee80211_sub_if_data *sdata,
2065 bool powersave);
2066 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2067 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
2068
2069 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
2070 unsigned long queues,
2071 enum queue_stop_reason reason,
2072 bool refcounted);
2073 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
2074 struct ieee80211_sub_if_data *sdata,
2075 enum queue_stop_reason reason);
2076 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
2077 struct ieee80211_sub_if_data *sdata,
2078 enum queue_stop_reason reason);
2079 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
2080 unsigned long queues,
2081 enum queue_stop_reason reason,
2082 bool refcounted);
2083 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
2084 enum queue_stop_reason reason,
2085 bool refcounted);
2086 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
2087 enum queue_stop_reason reason,
2088 bool refcounted);
2089 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
2090 void ieee80211_add_pending_skb(struct ieee80211_local *local,
2091 struct sk_buff *skb);
2092 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
2093 struct sk_buff_head *skbs);
2094 void ieee80211_flush_queues(struct ieee80211_local *local,
2095 struct ieee80211_sub_if_data *sdata, bool drop);
2096 void __ieee80211_flush_queues(struct ieee80211_local *local,
2097 struct ieee80211_sub_if_data *sdata,
2098 unsigned int queues, bool drop);
2099
ieee80211_can_run_worker(struct ieee80211_local * local)2100 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2101 {
2102 /*
2103 * It's unsafe to try to do any work during reconfigure flow.
2104 * When the flow ends the work will be requeued.
2105 */
2106 if (local->in_reconfig)
2107 return false;
2108
2109 /*
2110 * If quiescing is set, we are racing with __ieee80211_suspend.
2111 * __ieee80211_suspend flushes the workers after setting quiescing,
2112 * and we check quiescing / suspended before enqueing new workers.
2113 * We should abort the worker to avoid the races below.
2114 */
2115 if (local->quiescing)
2116 return false;
2117
2118 /*
2119 * We might already be suspended if the following scenario occurs:
2120 * __ieee80211_suspend Control path
2121 *
2122 * if (local->quiescing)
2123 * return;
2124 * local->quiescing = true;
2125 * flush_workqueue();
2126 * queue_work(...);
2127 * local->suspended = true;
2128 * local->quiescing = false;
2129 * worker starts running...
2130 */
2131 if (local->suspended)
2132 return false;
2133
2134 return true;
2135 }
2136
2137 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2138 void ieee80211_txq_set_params(struct ieee80211_local *local);
2139 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2140 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2141 struct sta_info *sta,
2142 struct txq_info *txq, int tid);
2143 void ieee80211_txq_purge(struct ieee80211_local *local,
2144 struct txq_info *txqi);
2145 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2146 struct ieee80211_sub_if_data *sdata);
2147 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2148 struct txq_info *txqi);
2149 void ieee80211_wake_txqs(unsigned long data);
2150 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2151 u16 transaction, u16 auth_alg, u16 status,
2152 const u8 *extra, size_t extra_len, const u8 *bssid,
2153 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2154 u32 tx_flags);
2155 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2156 const u8 *da, const u8 *bssid,
2157 u16 stype, u16 reason,
2158 bool send_frame, u8 *frame_buf);
2159
2160 enum {
2161 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
2162 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
2163 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
2164 };
2165
2166 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2167 size_t buffer_len,
2168 struct ieee80211_scan_ies *ie_desc,
2169 const u8 *ie, size_t ie_len,
2170 u8 bands_used, u32 *rate_masks,
2171 struct cfg80211_chan_def *chandef,
2172 u32 flags);
2173 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2174 const u8 *src, const u8 *dst,
2175 u32 ratemask,
2176 struct ieee80211_channel *chan,
2177 const u8 *ssid, size_t ssid_len,
2178 const u8 *ie, size_t ie_len,
2179 u32 flags);
2180 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2181 struct ieee802_11_elems *elems,
2182 enum nl80211_band band, u32 *basic_rates);
2183 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2184 enum ieee80211_smps_mode smps_mode);
2185 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
2186 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
2187
2188 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2189 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2190 u16 cap);
2191 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2192 const struct cfg80211_chan_def *chandef,
2193 u16 prot_mode, bool rifs_mode);
2194 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2195 const struct cfg80211_chan_def *chandef);
2196 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2197 u32 cap);
2198 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2199 const struct cfg80211_chan_def *chandef);
2200 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2201 u8 *ieee80211_ie_build_he_cap(u8 *pos,
2202 const struct ieee80211_sta_he_cap *he_cap,
2203 u8 *end);
2204 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2205 struct sk_buff *skb);
2206 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef);
2207 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2208 const struct ieee80211_supported_band *sband,
2209 const u8 *srates, int srates_len, u32 *rates);
2210 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2211 struct sk_buff *skb, bool need_basic,
2212 enum nl80211_band band);
2213 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2214 struct sk_buff *skb, bool need_basic,
2215 enum nl80211_band band);
2216 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2217 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
2218 struct ieee80211_sta_s1g_cap *caps,
2219 struct sk_buff *skb);
2220 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
2221 struct sk_buff *skb);
2222
2223 /* channel management */
2224 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2225 struct cfg80211_chan_def *chandef);
2226 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
2227 const struct ieee80211_vht_operation *oper,
2228 const struct ieee80211_ht_operation *htop,
2229 struct cfg80211_chan_def *chandef);
2230 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
2231 const struct ieee80211_he_operation *he_oper,
2232 struct cfg80211_chan_def *chandef);
2233 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
2234 struct cfg80211_chan_def *chandef);
2235 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2236
2237 int __must_check
2238 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
2239 const struct cfg80211_chan_def *chandef,
2240 enum ieee80211_chanctx_mode mode);
2241 int __must_check
2242 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
2243 const struct cfg80211_chan_def *chandef,
2244 enum ieee80211_chanctx_mode mode,
2245 bool radar_required);
2246 int __must_check
2247 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2248 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2249
2250 int __must_check
2251 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2252 const struct cfg80211_chan_def *chandef,
2253 u32 *changed);
2254 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2255 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2256 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2257 bool clear);
2258 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2259 struct ieee80211_chanctx *ctx);
2260
2261 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2262 struct ieee80211_chanctx *chanctx);
2263 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2264 struct ieee80211_chanctx *ctx);
2265 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2266
2267 void ieee80211_dfs_cac_timer(unsigned long data);
2268 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2269 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2270 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2271 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2272 struct cfg80211_csa_settings *csa_settings);
2273
2274 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2275 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2276 const struct ieee80211_cipher_scheme *
2277 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2278 enum nl80211_iftype iftype);
2279 int ieee80211_cs_headroom(struct ieee80211_local *local,
2280 struct cfg80211_crypto_settings *crypto,
2281 enum nl80211_iftype iftype);
2282 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2283 struct ieee80211_sub_if_data *sdata);
2284 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2285 const struct cfg80211_chan_def *chandef,
2286 enum ieee80211_chanctx_mode chanmode,
2287 u8 radar_detect);
2288 int ieee80211_max_num_channels(struct ieee80211_local *local);
2289 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta);
2290 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2291 struct ieee80211_chanctx *ctx);
2292
2293 /* TDLS */
2294 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2295 const u8 *peer, u8 action_code, u8 dialog_token,
2296 u16 status_code, u32 peer_capability,
2297 bool initiator, const u8 *extra_ies,
2298 size_t extra_ies_len);
2299 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2300 const u8 *peer, enum nl80211_tdls_operation oper);
2301 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2302 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2303 const u8 *addr, u8 oper_class,
2304 struct cfg80211_chan_def *chandef);
2305 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2306 struct net_device *dev,
2307 const u8 *addr);
2308 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2309 void ieee80211_tdls_chsw_work(struct work_struct *wk);
2310 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2311 const u8 *peer, u16 reason);
2312 const char *ieee80211_get_reason_code_string(u16 reason_code);
2313 u16 ieee80211_encode_usf(int val);
2314 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
2315 enum nl80211_iftype type);
2316
2317 extern const struct ethtool_ops ieee80211_ethtool_ops;
2318
2319 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw,
2320 struct ieee80211_vif *vif,
2321 struct ieee80211_sta *pubsta,
2322 int len, bool ampdu);
2323 #ifdef CONFIG_MAC80211_NOINLINE
2324 #define debug_noinline noinline
2325 #else
2326 #define debug_noinline
2327 #endif
2328
2329 #endif /* IEEE80211_I_H */
2330
