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) 2018-2019 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 /*
115 * During association, we save an ERP value from a probe response so
116 * that we can feed ERP info to the driver when handling the
117 * association completes. these fields probably won't be up-to-date
118 * otherwise, you probably don't want to use them.
119 */
120 bool has_erp_value;
121 u8 erp_value;
122
123 /* Keep track of the corruption of the last beacon/probe response. */
124 u8 corrupt_data;
125
126 /* Keep track of what bits of information we have valid info for. */
127 u8 valid_data;
128 };
129
130 /**
131 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
132 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
133 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
134 *
135 * These are bss flags that are attached to a bss in the
136 * @corrupt_data field of &struct ieee80211_bss.
137 */
138 enum ieee80211_bss_corrupt_data_flags {
139 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
140 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
141 };
142
143 /**
144 * enum ieee80211_valid_data_flags - BSS valid data flags
145 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
146 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
147 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
148 *
149 * These are bss flags that are attached to a bss in the
150 * @valid_data field of &struct ieee80211_bss. They show which parts
151 * of the data structure were received as a result of an un-corrupted
152 * beacon/probe response.
153 */
154 enum ieee80211_bss_valid_data_flags {
155 IEEE80211_BSS_VALID_WMM = BIT(1),
156 IEEE80211_BSS_VALID_RATES = BIT(2),
157 IEEE80211_BSS_VALID_ERP = BIT(3)
158 };
159
160 typedef unsigned __bitwise ieee80211_tx_result;
161 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
162 #define TX_DROP ((__force ieee80211_tx_result) 1u)
163 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
164
165 #define IEEE80211_TX_NO_SEQNO BIT(0)
166 #define IEEE80211_TX_UNICAST BIT(1)
167 #define IEEE80211_TX_PS_BUFFERED BIT(2)
168
169 struct ieee80211_tx_data {
170 struct sk_buff *skb;
171 struct sk_buff_head skbs;
172 struct ieee80211_local *local;
173 struct ieee80211_sub_if_data *sdata;
174 struct sta_info *sta;
175 struct ieee80211_key *key;
176 struct ieee80211_tx_rate rate;
177
178 unsigned int flags;
179 };
180
181
182 typedef unsigned __bitwise ieee80211_rx_result;
183 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
184 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
185 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
186 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
187
188 /**
189 * enum ieee80211_packet_rx_flags - packet RX flags
190 * @IEEE80211_RX_AMSDU: a-MSDU packet
191 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
192 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
193 *
194 * These are per-frame flags that are attached to a frame in the
195 * @rx_flags field of &struct ieee80211_rx_status.
196 */
197 enum ieee80211_packet_rx_flags {
198 IEEE80211_RX_AMSDU = BIT(3),
199 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
200 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
201 };
202
203 /**
204 * enum ieee80211_rx_flags - RX data flags
205 *
206 * @IEEE80211_RX_CMNTR: received on cooked monitor already
207 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
208 * to cfg80211_report_obss_beacon().
209 *
210 * These flags are used across handling multiple interfaces
211 * for a single frame.
212 */
213 enum ieee80211_rx_flags {
214 IEEE80211_RX_CMNTR = BIT(0),
215 IEEE80211_RX_BEACON_REPORTED = BIT(1),
216 };
217
218 struct ieee80211_rx_data {
219 struct napi_struct *napi;
220 struct sk_buff *skb;
221 struct ieee80211_local *local;
222 struct ieee80211_sub_if_data *sdata;
223 struct sta_info *sta;
224 struct ieee80211_key *key;
225
226 unsigned int flags;
227
228 /*
229 * Index into sequence numbers array, 0..16
230 * since the last (16) is used for non-QoS,
231 * will be 16 on non-QoS frames.
232 */
233 int seqno_idx;
234
235 /*
236 * Index into the security IV/PN arrays, 0..16
237 * since the last (16) is used for CCMP-encrypted
238 * management frames, will be set to 16 on mgmt
239 * frames and 0 on non-QoS frames.
240 */
241 int security_idx;
242
243 u32 tkip_iv32;
244 u16 tkip_iv16;
245 };
246
247 struct ieee80211_csa_settings {
248 const u16 *counter_offsets_beacon;
249 const u16 *counter_offsets_presp;
250
251 int n_counter_offsets_beacon;
252 int n_counter_offsets_presp;
253
254 u8 count;
255 };
256
257 struct beacon_data {
258 u8 *head, *tail;
259 int head_len, tail_len;
260 struct ieee80211_meshconf_ie *meshconf;
261 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
262 u8 csa_current_counter;
263 struct rcu_head rcu_head;
264 };
265
266 struct probe_resp {
267 struct rcu_head rcu_head;
268 int len;
269 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
270 u8 data[0];
271 };
272
273 struct ps_data {
274 /* yes, this looks ugly, but guarantees that we can later use
275 * bitmap_empty :)
276 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
277 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
278 __aligned(__alignof__(unsigned long));
279 struct sk_buff_head bc_buf;
280 atomic_t num_sta_ps; /* number of stations in PS mode */
281 int dtim_count;
282 bool dtim_bc_mc;
283 };
284
285 struct ieee80211_if_ap {
286 struct beacon_data __rcu *beacon;
287 struct probe_resp __rcu *probe_resp;
288
289 /* to be used after channel switch. */
290 struct cfg80211_beacon_data *next_beacon;
291 struct list_head vlans; /* write-protected with RTNL and local->mtx */
292
293 struct ps_data ps;
294 atomic_t num_mcast_sta; /* number of stations receiving multicast */
295 enum ieee80211_smps_mode req_smps, /* requested smps mode */
296 driver_smps_mode; /* smps mode request */
297
298 struct work_struct request_smps_work;
299 bool multicast_to_unicast;
300 };
301
302 struct ieee80211_if_wds {
303 struct sta_info *sta;
304 u8 remote_addr[ETH_ALEN];
305 };
306
307 struct ieee80211_if_vlan {
308 struct list_head list; /* write-protected with RTNL and local->mtx */
309
310 /* used for all tx if the VLAN is configured to 4-addr mode */
311 struct sta_info __rcu *sta;
312 atomic_t num_mcast_sta; /* number of stations receiving multicast */
313 };
314
315 struct mesh_stats {
316 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
317 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
318 __u32 fwded_frames; /* Mesh total forwarded frames */
319 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
320 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
321 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
322 };
323
324 #define PREQ_Q_F_START 0x1
325 #define PREQ_Q_F_REFRESH 0x2
326 struct mesh_preq_queue {
327 struct list_head list;
328 u8 dst[ETH_ALEN];
329 u8 flags;
330 };
331
332 struct ieee80211_roc_work {
333 struct list_head list;
334
335 struct ieee80211_sub_if_data *sdata;
336
337 struct ieee80211_channel *chan;
338
339 bool started, abort, hw_begun, notified;
340 bool on_channel;
341
342 unsigned long start_time;
343
344 u32 duration, req_duration;
345 struct sk_buff *frame;
346 u64 cookie, mgmt_tx_cookie;
347 enum ieee80211_roc_type type;
348 };
349
350 /* flags used in struct ieee80211_if_managed.flags */
351 enum ieee80211_sta_flags {
352 IEEE80211_STA_CONNECTION_POLL = BIT(1),
353 IEEE80211_STA_CONTROL_PORT = BIT(2),
354 IEEE80211_STA_DISABLE_HT = BIT(4),
355 IEEE80211_STA_MFP_ENABLED = BIT(6),
356 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
357 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
358 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
359 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
360 IEEE80211_STA_DISABLE_VHT = BIT(11),
361 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
362 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
363 IEEE80211_STA_DISABLE_WMM = BIT(14),
364 IEEE80211_STA_ENABLE_RRM = BIT(15),
365 IEEE80211_STA_DISABLE_HE = BIT(16),
366 };
367
368 struct ieee80211_mgd_auth_data {
369 struct cfg80211_bss *bss;
370 unsigned long timeout;
371 int tries;
372 u16 algorithm, expected_transaction;
373
374 u8 key[WLAN_KEY_LEN_WEP104];
375 u8 key_len, key_idx;
376 bool done;
377 bool peer_confirmed;
378 bool timeout_started;
379
380 u16 sae_trans, sae_status;
381 size_t data_len;
382 u8 data[];
383 };
384
385 struct ieee80211_mgd_assoc_data {
386 struct cfg80211_bss *bss;
387 const u8 *supp_rates;
388
389 unsigned long timeout;
390 int tries;
391
392 u16 capability;
393 u8 prev_bssid[ETH_ALEN];
394 u8 ssid[IEEE80211_MAX_SSID_LEN];
395 u8 ssid_len;
396 u8 supp_rates_len;
397 bool wmm, uapsd;
398 bool need_beacon;
399 bool synced;
400 bool timeout_started;
401
402 u8 ap_ht_param;
403
404 struct ieee80211_vht_cap ap_vht_cap;
405
406 u8 fils_nonces[2 * FILS_NONCE_LEN];
407 u8 fils_kek[FILS_MAX_KEK_LEN];
408 size_t fils_kek_len;
409
410 size_t ie_len;
411 u8 ie[];
412 };
413
414 struct ieee80211_sta_tx_tspec {
415 /* timestamp of the first packet in the time slice */
416 unsigned long time_slice_start;
417
418 u32 admitted_time; /* in usecs, unlike over the air */
419 u8 tsid;
420 s8 up; /* signed to be able to invalidate with -1 during teardown */
421
422 /* consumed TX time in microseconds in the time slice */
423 u32 consumed_tx_time;
424 enum {
425 TX_TSPEC_ACTION_NONE = 0,
426 TX_TSPEC_ACTION_DOWNGRADE,
427 TX_TSPEC_ACTION_STOP_DOWNGRADE,
428 } action;
429 bool downgraded;
430 };
431
432 DECLARE_EWMA(beacon_signal, 4, 4)
433
434 struct ieee80211_if_managed {
435 struct timer_list timer;
436 struct timer_list conn_mon_timer;
437 struct timer_list bcn_mon_timer;
438 struct timer_list chswitch_timer;
439 struct work_struct monitor_work;
440 struct work_struct chswitch_work;
441 struct work_struct beacon_connection_loss_work;
442 struct work_struct csa_connection_drop_work;
443
444 unsigned long beacon_timeout;
445 unsigned long probe_timeout;
446 int probe_send_count;
447 bool nullfunc_failed;
448 bool connection_loss;
449
450 struct cfg80211_bss *associated;
451 struct ieee80211_mgd_auth_data *auth_data;
452 struct ieee80211_mgd_assoc_data *assoc_data;
453
454 u8 bssid[ETH_ALEN] __aligned(2);
455
456 u16 aid;
457
458 bool powersave; /* powersave requested for this iface */
459 bool broken_ap; /* AP is broken -- turn off powersave */
460 bool have_beacon;
461 u8 dtim_period;
462 enum ieee80211_smps_mode req_smps, /* requested smps mode */
463 driver_smps_mode; /* smps mode request */
464
465 struct work_struct request_smps_work;
466
467 unsigned int flags;
468
469 bool csa_waiting_bcn;
470 bool csa_ignored_same_chan;
471
472 bool beacon_crc_valid;
473 u32 beacon_crc;
474
475 bool status_acked;
476 bool status_received;
477 __le16 status_fc;
478
479 enum {
480 IEEE80211_MFP_DISABLED,
481 IEEE80211_MFP_OPTIONAL,
482 IEEE80211_MFP_REQUIRED
483 } mfp; /* management frame protection */
484
485 /*
486 * Bitmask of enabled u-apsd queues,
487 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
488 * to take effect.
489 */
490 unsigned int uapsd_queues;
491
492 /*
493 * Maximum number of buffered frames AP can deliver during a
494 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
495 * Needs a new association to take effect.
496 */
497 unsigned int uapsd_max_sp_len;
498
499 int wmm_last_param_set;
500 int mu_edca_last_param_set;
501
502 u8 use_4addr;
503
504 s16 p2p_noa_index;
505
506 struct ewma_beacon_signal ave_beacon_signal;
507
508 /*
509 * Number of Beacon frames used in ave_beacon_signal. This can be used
510 * to avoid generating less reliable cqm events that would be based
511 * only on couple of received frames.
512 */
513 unsigned int count_beacon_signal;
514
515 /* Number of times beacon loss was invoked. */
516 unsigned int beacon_loss_count;
517
518 /*
519 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
520 * that triggered a cqm event. 0 indicates that no event has been
521 * generated for the current association.
522 */
523 int last_cqm_event_signal;
524
525 /*
526 * State variables for keeping track of RSSI of the AP currently
527 * connected to and informing driver when RSSI has gone
528 * below/above a certain threshold.
529 */
530 int rssi_min_thold, rssi_max_thold;
531 int last_ave_beacon_signal;
532
533 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
534 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
535 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
536 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
537
538 /* TDLS support */
539 u8 tdls_peer[ETH_ALEN] __aligned(2);
540 struct delayed_work tdls_peer_del_work;
541 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
542 struct sk_buff *teardown_skb; /* A copy to send through the AP */
543 spinlock_t teardown_lock; /* To lock changing teardown_skb */
544 bool tdls_chan_switch_prohibited;
545 bool tdls_wider_bw_prohibited;
546
547 /* WMM-AC TSPEC support */
548 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
549 /* Use a separate work struct so that we can do something here
550 * while the sdata->work is flushing the queues, for example.
551 * otherwise, in scenarios where we hardly get any traffic out
552 * on the BE queue, but there's a lot of VO traffic, we might
553 * get stuck in a downgraded situation and flush takes forever.
554 */
555 struct delayed_work tx_tspec_wk;
556
557 /* Information elements from the last transmitted (Re)Association
558 * Request frame.
559 */
560 u8 *assoc_req_ies;
561 size_t assoc_req_ies_len;
562 };
563
564 struct ieee80211_if_ibss {
565 struct timer_list timer;
566 struct work_struct csa_connection_drop_work;
567
568 unsigned long last_scan_completed;
569
570 u32 basic_rates;
571
572 bool fixed_bssid;
573 bool fixed_channel;
574 bool privacy;
575
576 bool control_port;
577 bool userspace_handles_dfs;
578
579 u8 bssid[ETH_ALEN] __aligned(2);
580 u8 ssid[IEEE80211_MAX_SSID_LEN];
581 u8 ssid_len, ie_len;
582 u8 *ie;
583 struct cfg80211_chan_def chandef;
584
585 unsigned long ibss_join_req;
586 /* probe response/beacon for IBSS */
587 struct beacon_data __rcu *presp;
588
589 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
590 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
591
592 spinlock_t incomplete_lock;
593 struct list_head incomplete_stations;
594
595 enum {
596 IEEE80211_IBSS_MLME_SEARCH,
597 IEEE80211_IBSS_MLME_JOINED,
598 } state;
599 };
600
601 /**
602 * struct ieee80211_if_ocb - OCB mode state
603 *
604 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
605 * @wrkq_flags: OCB deferred task action
606 * @incomplete_lock: delayed STA insertion lock
607 * @incomplete_stations: list of STAs waiting for delayed insertion
608 * @joined: indication if the interface is connected to an OCB network
609 */
610 struct ieee80211_if_ocb {
611 struct timer_list housekeeping_timer;
612 unsigned long wrkq_flags;
613
614 spinlock_t incomplete_lock;
615 struct list_head incomplete_stations;
616
617 bool joined;
618 };
619
620 /**
621 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
622 *
623 * these declarations define the interface, which enables
624 * vendor-specific mesh synchronization
625 *
626 */
627 struct ieee802_11_elems;
628 struct ieee80211_mesh_sync_ops {
629 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
630 u16 stype,
631 struct ieee80211_mgmt *mgmt,
632 struct ieee802_11_elems *elems,
633 struct ieee80211_rx_status *rx_status);
634
635 /* should be called with beacon_data under RCU read lock */
636 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
637 struct beacon_data *beacon);
638 /* add other framework functions here */
639 };
640
641 struct mesh_csa_settings {
642 struct rcu_head rcu_head;
643 struct cfg80211_csa_settings settings;
644 };
645
646 struct ieee80211_if_mesh {
647 struct timer_list housekeeping_timer;
648 struct timer_list mesh_path_timer;
649 struct timer_list mesh_path_root_timer;
650
651 unsigned long wrkq_flags;
652 unsigned long mbss_changed;
653
654 bool userspace_handles_dfs;
655
656 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
657 size_t mesh_id_len;
658 /* Active Path Selection Protocol Identifier */
659 u8 mesh_pp_id;
660 /* Active Path Selection Metric Identifier */
661 u8 mesh_pm_id;
662 /* Congestion Control Mode Identifier */
663 u8 mesh_cc_id;
664 /* Synchronization Protocol Identifier */
665 u8 mesh_sp_id;
666 /* Authentication Protocol Identifier */
667 u8 mesh_auth_id;
668 /* Local mesh Sequence Number */
669 u32 sn;
670 /* Last used PREQ ID */
671 u32 preq_id;
672 atomic_t mpaths;
673 /* Timestamp of last SN update */
674 unsigned long last_sn_update;
675 /* Time when it's ok to send next PERR */
676 unsigned long next_perr;
677 /* Timestamp of last PREQ sent */
678 unsigned long last_preq;
679 struct mesh_rmc *rmc;
680 spinlock_t mesh_preq_queue_lock;
681 struct mesh_preq_queue preq_queue;
682 int preq_queue_len;
683 struct mesh_stats mshstats;
684 struct mesh_config mshcfg;
685 atomic_t estab_plinks;
686 u32 mesh_seqnum;
687 bool accepting_plinks;
688 int num_gates;
689 struct beacon_data __rcu *beacon;
690 const u8 *ie;
691 u8 ie_len;
692 enum {
693 IEEE80211_MESH_SEC_NONE = 0x0,
694 IEEE80211_MESH_SEC_AUTHED = 0x1,
695 IEEE80211_MESH_SEC_SECURED = 0x2,
696 } security;
697 bool user_mpm;
698 /* Extensible Synchronization Framework */
699 const struct ieee80211_mesh_sync_ops *sync_ops;
700 s64 sync_offset_clockdrift_max;
701 spinlock_t sync_offset_lock;
702 /* mesh power save */
703 enum nl80211_mesh_power_mode nonpeer_pm;
704 int ps_peers_light_sleep;
705 int ps_peers_deep_sleep;
706 struct ps_data ps;
707 /* Channel Switching Support */
708 struct mesh_csa_settings __rcu *csa;
709 enum {
710 IEEE80211_MESH_CSA_ROLE_NONE,
711 IEEE80211_MESH_CSA_ROLE_INIT,
712 IEEE80211_MESH_CSA_ROLE_REPEATER,
713 } csa_role;
714 u8 chsw_ttl;
715 u16 pre_value;
716
717 /* offset from skb->data while building IE */
718 int meshconf_offset;
719
720 struct mesh_table *mesh_paths;
721 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */
722 int mesh_paths_generation;
723 int mpp_paths_generation;
724 };
725
726 #ifdef CONFIG_MAC80211_MESH
727 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
728 do { (msh)->mshstats.name++; } while (0)
729 #else
730 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
731 do { } while (0)
732 #endif
733
734 /**
735 * enum ieee80211_sub_if_data_flags - virtual interface flags
736 *
737 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
738 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
739 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
740 * associated stations and deliver multicast frames both
741 * back to wireless media and to the local net stack.
742 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
743 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
744 */
745 enum ieee80211_sub_if_data_flags {
746 IEEE80211_SDATA_ALLMULTI = BIT(0),
747 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
748 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
749 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
750 IEEE80211_SDATA_IN_DRIVER = BIT(5),
751 };
752
753 /**
754 * enum ieee80211_sdata_state_bits - virtual interface state bits
755 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
756 * mirrors netif_running() but is separate for interface type
757 * change handling while the interface is up
758 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
759 * mode, so queues are stopped
760 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
761 * to offchannel, reset when offchannel returns
762 */
763 enum ieee80211_sdata_state_bits {
764 SDATA_STATE_RUNNING,
765 SDATA_STATE_OFFCHANNEL,
766 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
767 };
768
769 /**
770 * enum ieee80211_chanctx_mode - channel context configuration mode
771 *
772 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
773 * multiple interfaces
774 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
775 * only by a single interface. This can be used for example for
776 * non-fixed channel IBSS.
777 */
778 enum ieee80211_chanctx_mode {
779 IEEE80211_CHANCTX_SHARED,
780 IEEE80211_CHANCTX_EXCLUSIVE
781 };
782
783 /**
784 * enum ieee80211_chanctx_replace_state - channel context replacement state
785 *
786 * This is used for channel context in-place reservations that require channel
787 * context switch/swap.
788 *
789 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
790 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
791 * by a (not yet registered) channel context pointed by %replace_ctx.
792 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
793 * replaces an existing channel context pointed to by %replace_ctx.
794 */
795 enum ieee80211_chanctx_replace_state {
796 IEEE80211_CHANCTX_REPLACE_NONE,
797 IEEE80211_CHANCTX_WILL_BE_REPLACED,
798 IEEE80211_CHANCTX_REPLACES_OTHER,
799 };
800
801 struct ieee80211_chanctx {
802 struct list_head list;
803 struct rcu_head rcu_head;
804
805 struct list_head assigned_vifs;
806 struct list_head reserved_vifs;
807
808 enum ieee80211_chanctx_replace_state replace_state;
809 struct ieee80211_chanctx *replace_ctx;
810
811 enum ieee80211_chanctx_mode mode;
812 bool driver_present;
813
814 struct ieee80211_chanctx_conf conf;
815 };
816
817 struct mac80211_qos_map {
818 struct cfg80211_qos_map qos_map;
819 struct rcu_head rcu_head;
820 };
821
822 enum txq_info_flags {
823 IEEE80211_TXQ_STOP,
824 IEEE80211_TXQ_AMPDU,
825 IEEE80211_TXQ_NO_AMSDU,
826 IEEE80211_TXQ_STOP_NETIF_TX,
827 };
828
829 /**
830 * struct txq_info - per tid queue
831 *
832 * @tin: contains packets split into multiple flows
833 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
834 * a fq_flow which is already owned by a different tin
835 * @def_cvars: codel vars for @def_flow
836 * @frags: used to keep fragments created after dequeue
837 * @schedule_order: used with ieee80211_local->active_txqs
838 * @schedule_round: counter to prevent infinite loops on TXQ scheduling
839 */
840 struct txq_info {
841 struct fq_tin tin;
842 struct fq_flow def_flow;
843 struct codel_vars def_cvars;
844 struct codel_stats cstats;
845 struct sk_buff_head frags;
846 struct list_head schedule_order;
847 u16 schedule_round;
848 unsigned long flags;
849
850 /* keep last! */
851 struct ieee80211_txq txq;
852 };
853
854 struct ieee80211_if_mntr {
855 u32 flags;
856 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
857
858 struct list_head list;
859 };
860
861 /**
862 * struct ieee80211_if_nan - NAN state
863 *
864 * @conf: current NAN configuration
865 * @func_ids: a bitmap of available instance_id's
866 */
867 struct ieee80211_if_nan {
868 struct cfg80211_nan_conf conf;
869
870 /* protects function_inst_ids */
871 spinlock_t func_lock;
872 struct idr function_inst_ids;
873 };
874
875 struct ieee80211_sub_if_data {
876 struct list_head list;
877
878 struct wireless_dev wdev;
879
880 /* keys */
881 struct list_head key_list;
882
883 /* count for keys needing tailroom space allocation */
884 int crypto_tx_tailroom_needed_cnt;
885 int crypto_tx_tailroom_pending_dec;
886 struct delayed_work dec_tailroom_needed_wk;
887
888 struct net_device *dev;
889 struct ieee80211_local *local;
890
891 unsigned int flags;
892
893 unsigned long state;
894
895 char name[IFNAMSIZ];
896
897 /* Fragment table for host-based reassembly */
898 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
899 unsigned int fragment_next;
900
901 /* TID bitmap for NoAck policy */
902 u16 noack_map;
903
904 /* bit field of ACM bits (BIT(802.1D tag)) */
905 u8 wmm_acm;
906
907 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
908 struct ieee80211_key __rcu *default_unicast_key;
909 struct ieee80211_key __rcu *default_multicast_key;
910 struct ieee80211_key __rcu *default_mgmt_key;
911
912 u16 sequence_number;
913 __be16 control_port_protocol;
914 bool control_port_no_encrypt;
915 bool control_port_over_nl80211;
916 int encrypt_headroom;
917
918 atomic_t num_tx_queued;
919 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
920 struct mac80211_qos_map __rcu *qos_map;
921
922 struct work_struct csa_finalize_work;
923 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
924 struct cfg80211_chan_def csa_chandef;
925
926 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
927 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
928
929 /* context reservation -- protected with chanctx_mtx */
930 struct ieee80211_chanctx *reserved_chanctx;
931 struct cfg80211_chan_def reserved_chandef;
932 bool reserved_radar_required;
933 bool reserved_ready;
934
935 /* used to reconfigure hardware SM PS */
936 struct work_struct recalc_smps;
937
938 struct work_struct work;
939 struct sk_buff_head skb_queue;
940
941 u8 needed_rx_chains;
942 enum ieee80211_smps_mode smps_mode;
943
944 int user_power_level; /* in dBm */
945 int ap_power_level; /* in dBm */
946
947 bool radar_required;
948 struct delayed_work dfs_cac_timer_work;
949
950 /*
951 * AP this belongs to: self in AP mode and
952 * corresponding AP in VLAN mode, NULL for
953 * all others (might be needed later in IBSS)
954 */
955 struct ieee80211_if_ap *bss;
956
957 /* bitmap of allowed (non-MCS) rate indexes for rate control */
958 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
959
960 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
961 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
962
963 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
964 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
965
966 union {
967 struct ieee80211_if_ap ap;
968 struct ieee80211_if_wds wds;
969 struct ieee80211_if_vlan vlan;
970 struct ieee80211_if_managed mgd;
971 struct ieee80211_if_ibss ibss;
972 struct ieee80211_if_mesh mesh;
973 struct ieee80211_if_ocb ocb;
974 struct ieee80211_if_mntr mntr;
975 struct ieee80211_if_nan nan;
976 } u;
977
978 #ifdef CONFIG_MAC80211_DEBUGFS
979 struct {
980 struct dentry *subdir_stations;
981 struct dentry *default_unicast_key;
982 struct dentry *default_multicast_key;
983 struct dentry *default_mgmt_key;
984 } debugfs;
985 #endif
986
987 /* must be last, dynamically sized area in this! */
988 struct ieee80211_vif vif;
989 };
990
991 static inline
vif_to_sdata(struct ieee80211_vif * p)992 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
993 {
994 return container_of(p, struct ieee80211_sub_if_data, vif);
995 }
996
sdata_lock(struct ieee80211_sub_if_data * sdata)997 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
998 __acquires(&sdata->wdev.mtx)
999 {
1000 mutex_lock(&sdata->wdev.mtx);
1001 __acquire(&sdata->wdev.mtx);
1002 }
1003
sdata_unlock(struct ieee80211_sub_if_data * sdata)1004 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
1005 __releases(&sdata->wdev.mtx)
1006 {
1007 mutex_unlock(&sdata->wdev.mtx);
1008 __release(&sdata->wdev.mtx);
1009 }
1010
1011 #define sdata_dereference(p, sdata) \
1012 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
1013
1014 static inline void
sdata_assert_lock(struct ieee80211_sub_if_data * sdata)1015 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
1016 {
1017 lockdep_assert_held(&sdata->wdev.mtx);
1018 }
1019
1020 static inline int
ieee80211_chandef_get_shift(struct cfg80211_chan_def * chandef)1021 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1022 {
1023 switch (chandef->width) {
1024 case NL80211_CHAN_WIDTH_5:
1025 return 2;
1026 case NL80211_CHAN_WIDTH_10:
1027 return 1;
1028 default:
1029 return 0;
1030 }
1031 }
1032
1033 static inline int
ieee80211_vif_get_shift(struct ieee80211_vif * vif)1034 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1035 {
1036 struct ieee80211_chanctx_conf *chanctx_conf;
1037 int shift = 0;
1038
1039 rcu_read_lock();
1040 chanctx_conf = rcu_dereference(vif->chanctx_conf);
1041 if (chanctx_conf)
1042 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1043 rcu_read_unlock();
1044
1045 return shift;
1046 }
1047
1048 enum {
1049 IEEE80211_RX_MSG = 1,
1050 IEEE80211_TX_STATUS_MSG = 2,
1051 };
1052
1053 enum queue_stop_reason {
1054 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1055 IEEE80211_QUEUE_STOP_REASON_PS,
1056 IEEE80211_QUEUE_STOP_REASON_CSA,
1057 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1058 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1059 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1060 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1061 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1062 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1063 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1064
1065 IEEE80211_QUEUE_STOP_REASONS,
1066 };
1067
1068 #ifdef CONFIG_MAC80211_LEDS
1069 struct tpt_led_trigger {
1070 char name[32];
1071 const struct ieee80211_tpt_blink *blink_table;
1072 unsigned int blink_table_len;
1073 struct timer_list timer;
1074 struct ieee80211_local *local;
1075 unsigned long prev_traffic;
1076 unsigned long tx_bytes, rx_bytes;
1077 unsigned int active, want;
1078 bool running;
1079 };
1080 #endif
1081
1082 /**
1083 * mac80211 scan flags - currently active scan mode
1084 *
1085 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1086 * well be on the operating channel
1087 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1088 * determine if we are on the operating channel or not
1089 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1090 * channel. This should not interrupt normal traffic.
1091 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1092 * that the scan completed.
1093 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1094 * a scan complete for an aborted scan.
1095 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1096 * cancelled.
1097 */
1098 enum {
1099 SCAN_SW_SCANNING,
1100 SCAN_HW_SCANNING,
1101 SCAN_ONCHANNEL_SCANNING,
1102 SCAN_COMPLETED,
1103 SCAN_ABORTED,
1104 SCAN_HW_CANCELLED,
1105 };
1106
1107 /**
1108 * enum mac80211_scan_state - scan state machine states
1109 *
1110 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1111 * determines if we should keep on scanning or switch back to the
1112 * operating channel
1113 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1114 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1115 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1116 * send out data
1117 * @SCAN_RESUME: Resume the scan and scan the next channel
1118 * @SCAN_ABORT: Abort the scan and go back to operating channel
1119 */
1120 enum mac80211_scan_state {
1121 SCAN_DECISION,
1122 SCAN_SET_CHANNEL,
1123 SCAN_SEND_PROBE,
1124 SCAN_SUSPEND,
1125 SCAN_RESUME,
1126 SCAN_ABORT,
1127 };
1128
1129 struct ieee80211_local {
1130 /* embed the driver visible part.
1131 * don't cast (use the static inlines below), but we keep
1132 * it first anyway so they become a no-op */
1133 struct ieee80211_hw hw;
1134
1135 struct fq fq;
1136 struct codel_vars *cvars;
1137 struct codel_params cparams;
1138
1139 /* protects active_txqs and txqi->schedule_order */
1140 spinlock_t active_txq_lock[IEEE80211_NUM_ACS];
1141 struct list_head active_txqs[IEEE80211_NUM_ACS];
1142 u16 schedule_round[IEEE80211_NUM_ACS];
1143
1144 u16 airtime_flags;
1145
1146 const struct ieee80211_ops *ops;
1147
1148 /*
1149 * private workqueue to mac80211. mac80211 makes this accessible
1150 * via ieee80211_queue_work()
1151 */
1152 struct workqueue_struct *workqueue;
1153
1154 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1155 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1156 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1157 spinlock_t queue_stop_reason_lock;
1158
1159 int open_count;
1160 int monitors, cooked_mntrs;
1161 /* number of interfaces with corresponding FIF_ flags */
1162 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1163 fif_probe_req;
1164 int probe_req_reg;
1165 unsigned int filter_flags; /* FIF_* */
1166
1167 bool wiphy_ciphers_allocated;
1168
1169 bool use_chanctx;
1170
1171 /* protects the aggregated multicast list and filter calls */
1172 spinlock_t filter_lock;
1173
1174 /* used for uploading changed mc list */
1175 struct work_struct reconfig_filter;
1176
1177 /* aggregated multicast list */
1178 struct netdev_hw_addr_list mc_list;
1179
1180 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1181
1182 /*
1183 * suspended is true if we finished all the suspend _and_ we have
1184 * not yet come up from resume. This is to be used by mac80211
1185 * to ensure driver sanity during suspend and mac80211's own
1186 * sanity. It can eventually be used for WoW as well.
1187 */
1188 bool suspended;
1189
1190 /*
1191 * Resuming is true while suspended, but when we're reprogramming the
1192 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1193 * again even though some other parts of the stack are still suspended
1194 * and we still drop received frames to avoid waking the stack.
1195 */
1196 bool resuming;
1197
1198 /*
1199 * quiescing is true during the suspend process _only_ to
1200 * ease timer cancelling etc.
1201 */
1202 bool quiescing;
1203
1204 /* device is started */
1205 bool started;
1206
1207 /* device is during a HW reconfig */
1208 bool in_reconfig;
1209
1210 /* wowlan is enabled -- don't reconfig on resume */
1211 bool wowlan;
1212
1213 struct work_struct radar_detected_work;
1214
1215 /* number of RX chains the hardware has */
1216 u8 rx_chains;
1217
1218 /* bitmap of which sbands were copied */
1219 u8 sband_allocated;
1220
1221 int tx_headroom; /* required headroom for hardware/radiotap */
1222
1223 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1224 * added to skb_queue will be processed, but frames in
1225 * skb_queue_unreliable may be dropped if the total length of these
1226 * queues increases over the limit. */
1227 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1228 struct tasklet_struct tasklet;
1229 struct sk_buff_head skb_queue;
1230 struct sk_buff_head skb_queue_unreliable;
1231
1232 spinlock_t rx_path_lock;
1233
1234 /* Station data */
1235 /*
1236 * The mutex only protects the list, hash table and
1237 * counter, reads are done with RCU.
1238 */
1239 struct mutex sta_mtx;
1240 spinlock_t tim_lock;
1241 unsigned long num_sta;
1242 struct list_head sta_list;
1243 struct rhltable sta_hash;
1244 struct timer_list sta_cleanup;
1245 int sta_generation;
1246
1247 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1248 struct tasklet_struct tx_pending_tasklet;
1249 struct tasklet_struct wake_txqs_tasklet;
1250
1251 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1252
1253 /* number of interfaces with allmulti RX */
1254 atomic_t iff_allmultis;
1255
1256 struct rate_control_ref *rate_ctrl;
1257
1258 struct arc4_ctx wep_tx_ctx;
1259 struct arc4_ctx wep_rx_ctx;
1260 u32 wep_iv;
1261
1262 /* see iface.c */
1263 struct list_head interfaces;
1264 struct list_head mon_list; /* only that are IFF_UP && !cooked */
1265 struct mutex iflist_mtx;
1266
1267 /*
1268 * Key mutex, protects sdata's key_list and sta_info's
1269 * key pointers and ptk_idx (write access, they're RCU.)
1270 */
1271 struct mutex key_mtx;
1272
1273 /* mutex for scan and work locking */
1274 struct mutex mtx;
1275
1276 /* Scanning and BSS list */
1277 unsigned long scanning;
1278 struct cfg80211_ssid scan_ssid;
1279 struct cfg80211_scan_request *int_scan_req;
1280 struct cfg80211_scan_request __rcu *scan_req;
1281 struct ieee80211_scan_request *hw_scan_req;
1282 struct cfg80211_chan_def scan_chandef;
1283 enum nl80211_band hw_scan_band;
1284 int scan_channel_idx;
1285 int scan_ies_len;
1286 int hw_scan_ies_bufsize;
1287 struct cfg80211_scan_info scan_info;
1288
1289 struct work_struct sched_scan_stopped_work;
1290 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1291 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1292 u8 scan_addr[ETH_ALEN];
1293
1294 unsigned long leave_oper_channel_time;
1295 enum mac80211_scan_state next_scan_state;
1296 struct delayed_work scan_work;
1297 struct ieee80211_sub_if_data __rcu *scan_sdata;
1298 /* For backward compatibility only -- do not use */
1299 struct cfg80211_chan_def _oper_chandef;
1300
1301 /* Temporary remain-on-channel for off-channel operations */
1302 struct ieee80211_channel *tmp_channel;
1303
1304 /* channel contexts */
1305 struct list_head chanctx_list;
1306 struct mutex chanctx_mtx;
1307
1308 #ifdef CONFIG_MAC80211_LEDS
1309 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1310 struct led_trigger tpt_led;
1311 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1312 atomic_t radio_led_active, tpt_led_active;
1313 struct tpt_led_trigger *tpt_led_trigger;
1314 #endif
1315
1316 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1317 /* SNMP counters */
1318 /* dot11CountersTable */
1319 u32 dot11TransmittedFragmentCount;
1320 u32 dot11MulticastTransmittedFrameCount;
1321 u32 dot11FailedCount;
1322 u32 dot11RetryCount;
1323 u32 dot11MultipleRetryCount;
1324 u32 dot11FrameDuplicateCount;
1325 u32 dot11ReceivedFragmentCount;
1326 u32 dot11MulticastReceivedFrameCount;
1327 u32 dot11TransmittedFrameCount;
1328
1329 /* TX/RX handler statistics */
1330 unsigned int tx_handlers_drop;
1331 unsigned int tx_handlers_queued;
1332 unsigned int tx_handlers_drop_wep;
1333 unsigned int tx_handlers_drop_not_assoc;
1334 unsigned int tx_handlers_drop_unauth_port;
1335 unsigned int rx_handlers_drop;
1336 unsigned int rx_handlers_queued;
1337 unsigned int rx_handlers_drop_nullfunc;
1338 unsigned int rx_handlers_drop_defrag;
1339 unsigned int tx_expand_skb_head;
1340 unsigned int tx_expand_skb_head_cloned;
1341 unsigned int rx_expand_skb_head_defrag;
1342 unsigned int rx_handlers_fragments;
1343 unsigned int tx_status_drop;
1344 #define I802_DEBUG_INC(c) (c)++
1345 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1346 #define I802_DEBUG_INC(c) do { } while (0)
1347 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1348
1349
1350 int total_ps_buffered; /* total number of all buffered unicast and
1351 * multicast packets for power saving stations
1352 */
1353
1354 bool pspolling;
1355 bool offchannel_ps_enabled;
1356 /*
1357 * PS can only be enabled when we have exactly one managed
1358 * interface (and monitors) in PS, this then points there.
1359 */
1360 struct ieee80211_sub_if_data *ps_sdata;
1361 struct work_struct dynamic_ps_enable_work;
1362 struct work_struct dynamic_ps_disable_work;
1363 struct timer_list dynamic_ps_timer;
1364 struct notifier_block ifa_notifier;
1365 struct notifier_block ifa6_notifier;
1366
1367 /*
1368 * The dynamic ps timeout configured from user space via WEXT -
1369 * this will override whatever chosen by mac80211 internally.
1370 */
1371 int dynamic_ps_forced_timeout;
1372
1373 int user_power_level; /* in dBm, for all interfaces */
1374
1375 enum ieee80211_smps_mode smps_mode;
1376
1377 struct work_struct restart_work;
1378
1379 #ifdef CONFIG_MAC80211_DEBUGFS
1380 struct local_debugfsdentries {
1381 struct dentry *rcdir;
1382 struct dentry *keys;
1383 } debugfs;
1384 bool force_tx_status;
1385 #endif
1386
1387 /*
1388 * Remain-on-channel support
1389 */
1390 struct delayed_work roc_work;
1391 struct list_head roc_list;
1392 struct work_struct hw_roc_start, hw_roc_done;
1393 unsigned long hw_roc_start_time;
1394 u64 roc_cookie_counter;
1395
1396 struct idr ack_status_frames;
1397 spinlock_t ack_status_lock;
1398
1399 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1400
1401 /* virtual monitor interface */
1402 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1403 struct cfg80211_chan_def monitor_chandef;
1404
1405 /* extended capabilities provided by mac80211 */
1406 u8 ext_capa[8];
1407
1408 /* TDLS channel switch */
1409 struct work_struct tdls_chsw_work;
1410 struct sk_buff_head skb_queue_tdls_chsw;
1411 };
1412
1413 static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(struct net_device * dev)1414 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1415 {
1416 return netdev_priv(dev);
1417 }
1418
1419 static inline struct ieee80211_sub_if_data *
IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev * wdev)1420 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1421 {
1422 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1423 }
1424
1425 static inline struct ieee80211_supported_band *
ieee80211_get_sband(struct ieee80211_sub_if_data * sdata)1426 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1427 {
1428 struct ieee80211_local *local = sdata->local;
1429 struct ieee80211_chanctx_conf *chanctx_conf;
1430 enum nl80211_band band;
1431
1432 rcu_read_lock();
1433 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1434
1435 if (WARN_ON_ONCE(!chanctx_conf)) {
1436 rcu_read_unlock();
1437 return NULL;
1438 }
1439
1440 band = chanctx_conf->def.chan->band;
1441 rcu_read_unlock();
1442
1443 return local->hw.wiphy->bands[band];
1444 }
1445
1446 /* this struct holds the value parsing from channel switch IE */
1447 struct ieee80211_csa_ie {
1448 struct cfg80211_chan_def chandef;
1449 u8 mode;
1450 u8 count;
1451 u8 ttl;
1452 u16 pre_value;
1453 u16 reason_code;
1454 u32 max_switch_time;
1455 };
1456
1457 /* Parsed Information Elements */
1458 struct ieee802_11_elems {
1459 const u8 *ie_start;
1460 size_t total_len;
1461
1462 /* pointers to IEs */
1463 const struct ieee80211_tdls_lnkie *lnk_id;
1464 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1465 const u8 *ext_capab;
1466 const u8 *ssid;
1467 const u8 *supp_rates;
1468 const u8 *ds_params;
1469 const struct ieee80211_tim_ie *tim;
1470 const u8 *challenge;
1471 const u8 *rsn;
1472 const u8 *erp_info;
1473 const u8 *ext_supp_rates;
1474 const u8 *wmm_info;
1475 const u8 *wmm_param;
1476 const struct ieee80211_ht_cap *ht_cap_elem;
1477 const struct ieee80211_ht_operation *ht_operation;
1478 const struct ieee80211_vht_cap *vht_cap_elem;
1479 const struct ieee80211_vht_operation *vht_operation;
1480 const struct ieee80211_meshconf_ie *mesh_config;
1481 const u8 *he_cap;
1482 const struct ieee80211_he_operation *he_operation;
1483 const struct ieee80211_he_spr *he_spr;
1484 const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1485 const u8 *uora_element;
1486 const u8 *mesh_id;
1487 const u8 *peering;
1488 const __le16 *awake_window;
1489 const u8 *preq;
1490 const u8 *prep;
1491 const u8 *perr;
1492 const struct ieee80211_rann_ie *rann;
1493 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1494 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1495 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1496 const u8 *max_channel_switch_time;
1497 const u8 *country_elem;
1498 const u8 *pwr_constr_elem;
1499 const u8 *cisco_dtpc_elem;
1500 const struct ieee80211_timeout_interval_ie *timeout_int;
1501 const u8 *opmode_notif;
1502 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1503 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1504 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1505 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
1506 const struct ieee80211_bssid_index *bssid_index;
1507 u8 max_bssid_indicator;
1508 u8 dtim_count;
1509 u8 dtim_period;
1510 const struct ieee80211_addba_ext_ie *addba_ext_ie;
1511
1512 /* length of them, respectively */
1513 u8 ext_capab_len;
1514 u8 ssid_len;
1515 u8 supp_rates_len;
1516 u8 tim_len;
1517 u8 challenge_len;
1518 u8 rsn_len;
1519 u8 ext_supp_rates_len;
1520 u8 wmm_info_len;
1521 u8 wmm_param_len;
1522 u8 he_cap_len;
1523 u8 mesh_id_len;
1524 u8 peering_len;
1525 u8 preq_len;
1526 u8 prep_len;
1527 u8 perr_len;
1528 u8 country_elem_len;
1529 u8 bssid_index_len;
1530
1531 /* whether a parse error occurred while retrieving these elements */
1532 bool parse_error;
1533 };
1534
hw_to_local(struct ieee80211_hw * hw)1535 static inline struct ieee80211_local *hw_to_local(
1536 struct ieee80211_hw *hw)
1537 {
1538 return container_of(hw, struct ieee80211_local, hw);
1539 }
1540
to_txq_info(struct ieee80211_txq * txq)1541 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1542 {
1543 return container_of(txq, struct txq_info, txq);
1544 }
1545
txq_has_queue(struct ieee80211_txq * txq)1546 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1547 {
1548 struct txq_info *txqi = to_txq_info(txq);
1549
1550 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1551 }
1552
ieee80211_bssid_match(const u8 * raddr,const u8 * addr)1553 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1554 {
1555 return ether_addr_equal(raddr, addr) ||
1556 is_broadcast_ether_addr(raddr);
1557 }
1558
1559 static inline bool
ieee80211_have_rx_timestamp(struct ieee80211_rx_status * status)1560 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1561 {
1562 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1563 status->flag & RX_FLAG_MACTIME_END);
1564 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END))
1565 return true;
1566 /* can't handle non-legacy preamble yet */
1567 if (status->flag & RX_FLAG_MACTIME_PLCP_START &&
1568 status->encoding == RX_ENC_LEGACY)
1569 return true;
1570 return false;
1571 }
1572
1573 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1574 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1575
1576 /* This function returns the number of multicast stations connected to this
1577 * interface. It returns -1 if that number is not tracked, that is for netdevs
1578 * not in AP or AP_VLAN mode or when using 4addr.
1579 */
1580 static inline int
ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data * sdata)1581 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1582 {
1583 if (sdata->vif.type == NL80211_IFTYPE_AP)
1584 return atomic_read(&sdata->u.ap.num_mcast_sta);
1585 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1586 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1587 return -1;
1588 }
1589
1590 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1591 struct ieee80211_rx_status *status,
1592 unsigned int mpdu_len,
1593 unsigned int mpdu_offset);
1594 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1595 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1596 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1597 u32 changed);
1598 void ieee80211_configure_filter(struct ieee80211_local *local);
1599 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1600
1601 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1602 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1603 u64 *cookie, gfp_t gfp);
1604
1605 void ieee80211_check_fast_rx(struct sta_info *sta);
1606 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1607 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1608 void ieee80211_clear_fast_rx(struct sta_info *sta);
1609
1610 /* STA code */
1611 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1612 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1613 struct cfg80211_auth_request *req);
1614 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1615 struct cfg80211_assoc_request *req);
1616 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1617 struct cfg80211_deauth_request *req);
1618 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1619 struct cfg80211_disassoc_request *req);
1620 void ieee80211_send_pspoll(struct ieee80211_local *local,
1621 struct ieee80211_sub_if_data *sdata);
1622 void ieee80211_recalc_ps(struct ieee80211_local *local);
1623 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1624 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1625 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1626 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1627 struct sk_buff *skb);
1628 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1629 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1630 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1631 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1632 __le16 fc, bool acked);
1633 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1634 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1635 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1636
1637 /* IBSS code */
1638 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1639 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1640 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1641 const u8 *bssid, const u8 *addr, u32 supp_rates);
1642 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1643 struct cfg80211_ibss_params *params);
1644 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1645 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1646 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1647 struct sk_buff *skb);
1648 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1649 struct cfg80211_csa_settings *csa_settings);
1650 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1651 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1652
1653 /* OCB code */
1654 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1655 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1656 const u8 *bssid, const u8 *addr, u32 supp_rates);
1657 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1658 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1659 struct ocb_setup *setup);
1660 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1661
1662 /* mesh code */
1663 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1664 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1665 struct sk_buff *skb);
1666 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1667 struct cfg80211_csa_settings *csa_settings);
1668 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1669
1670 /* scan/BSS handling */
1671 void ieee80211_scan_work(struct work_struct *work);
1672 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1673 const u8 *ssid, u8 ssid_len,
1674 struct ieee80211_channel **channels,
1675 unsigned int n_channels,
1676 enum nl80211_bss_scan_width scan_width);
1677 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1678 struct cfg80211_scan_request *req);
1679 void ieee80211_scan_cancel(struct ieee80211_local *local);
1680 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1681 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1682
1683 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1684 struct ieee80211_bss *
1685 ieee80211_bss_info_update(struct ieee80211_local *local,
1686 struct ieee80211_rx_status *rx_status,
1687 struct ieee80211_mgmt *mgmt,
1688 size_t len,
1689 struct ieee80211_channel *channel);
1690 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1691 struct ieee80211_bss *bss);
1692
1693 /* scheduled scan handling */
1694 int
1695 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1696 struct cfg80211_sched_scan_request *req);
1697 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1698 struct cfg80211_sched_scan_request *req);
1699 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1700 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1701 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1702
1703 /* off-channel/mgmt-tx */
1704 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1705 void ieee80211_offchannel_return(struct ieee80211_local *local);
1706 void ieee80211_roc_setup(struct ieee80211_local *local);
1707 void ieee80211_start_next_roc(struct ieee80211_local *local);
1708 void ieee80211_roc_purge(struct ieee80211_local *local,
1709 struct ieee80211_sub_if_data *sdata);
1710 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1711 struct ieee80211_channel *chan,
1712 unsigned int duration, u64 *cookie);
1713 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1714 struct wireless_dev *wdev, u64 cookie);
1715 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1716 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1717 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1718 struct wireless_dev *wdev, u64 cookie);
1719
1720 /* channel switch handling */
1721 void ieee80211_csa_finalize_work(struct work_struct *work);
1722 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1723 struct cfg80211_csa_settings *params);
1724
1725 /* interface handling */
1726 int ieee80211_iface_init(void);
1727 void ieee80211_iface_exit(void);
1728 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1729 unsigned char name_assign_type,
1730 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1731 struct vif_params *params);
1732 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1733 enum nl80211_iftype type);
1734 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1735 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1736 u32 ieee80211_idle_off(struct ieee80211_local *local);
1737 void ieee80211_recalc_idle(struct ieee80211_local *local);
1738 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1739 const int offset);
1740 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1741 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1742 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1743 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1744
1745 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1746 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1747 bool update_bss);
1748
ieee80211_sdata_running(struct ieee80211_sub_if_data * sdata)1749 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1750 {
1751 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1752 }
1753
1754 /* tx handling */
1755 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1756 void ieee80211_tx_pending(unsigned long data);
1757 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1758 struct net_device *dev);
1759 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1760 struct net_device *dev);
1761 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1762 struct net_device *dev,
1763 u32 info_flags,
1764 u32 ctrl_flags);
1765 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1766 struct sk_buff_head *skbs);
1767 struct sk_buff *
1768 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1769 struct sk_buff *skb, u32 info_flags);
1770 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1771 struct ieee80211_supported_band *sband,
1772 int retry_count, int shift, bool send_to_cooked,
1773 struct ieee80211_tx_status *status);
1774
1775 void ieee80211_check_fast_xmit(struct sta_info *sta);
1776 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1777 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1778 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1779 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
1780 const u8 *buf, size_t len,
1781 const u8 *dest, __be16 proto, bool unencrypted);
1782 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
1783 const u8 *buf, size_t len);
1784
1785 /* HT */
1786 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1787 struct ieee80211_sta_ht_cap *ht_cap);
1788 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1789 struct ieee80211_supported_band *sband,
1790 const struct ieee80211_ht_cap *ht_cap_ie,
1791 struct sta_info *sta);
1792 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1793 const u8 *da, u16 tid,
1794 u16 initiator, u16 reason_code);
1795 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1796 enum ieee80211_smps_mode smps, const u8 *da,
1797 const u8 *bssid);
1798 void ieee80211_request_smps_ap_work(struct work_struct *work);
1799 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1800 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1801 enum ieee80211_smps_mode smps_mode_new);
1802
1803 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1804 u16 initiator, u16 reason, bool stop);
1805 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1806 u16 initiator, u16 reason, bool stop);
1807 void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
1808 u8 dialog_token, u16 timeout,
1809 u16 start_seq_num, u16 ba_policy, u16 tid,
1810 u16 buf_size, bool tx, bool auto_seq,
1811 const struct ieee80211_addba_ext_ie *addbaext);
1812 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1813 enum ieee80211_agg_stop_reason reason);
1814 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1815 struct sta_info *sta,
1816 struct ieee80211_mgmt *mgmt, size_t len);
1817 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1818 struct sta_info *sta,
1819 struct ieee80211_mgmt *mgmt,
1820 size_t len);
1821 void ieee80211_process_addba_request(struct ieee80211_local *local,
1822 struct sta_info *sta,
1823 struct ieee80211_mgmt *mgmt,
1824 size_t len);
1825
1826 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1827 enum ieee80211_agg_stop_reason reason);
1828 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1829 enum ieee80211_agg_stop_reason reason);
1830 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
1831 struct tid_ampdu_tx *tid_tx);
1832 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
1833 struct tid_ampdu_tx *tid_tx);
1834 void ieee80211_ba_session_work(struct work_struct *work);
1835 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1836 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1837
1838 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1839 enum nl80211_smps_mode
1840 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
1841
1842 /* VHT */
1843 void
1844 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1845 struct ieee80211_supported_band *sband,
1846 const struct ieee80211_vht_cap *vht_cap_ie,
1847 struct sta_info *sta);
1848 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1849 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1850 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1851 enum ieee80211_sta_rx_bandwidth
1852 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
1853 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
1854 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1855 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
1856 struct ieee80211_mgmt *mgmt);
1857 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1858 struct sta_info *sta, u8 opmode,
1859 enum nl80211_band band);
1860 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1861 struct sta_info *sta, u8 opmode,
1862 enum nl80211_band band);
1863 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1864 struct ieee80211_sta_vht_cap *vht_cap);
1865 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
1866 u16 vht_mask[NL80211_VHT_NSS_MAX]);
1867 enum nl80211_chan_width
1868 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta);
1869
1870 /* HE */
1871 void
1872 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
1873 struct ieee80211_supported_band *sband,
1874 const u8 *he_cap_ie, u8 he_cap_len,
1875 struct sta_info *sta);
1876 void
1877 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
1878 const struct ieee80211_he_spr *he_spr_ie_elem);
1879
1880 void
1881 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
1882 const struct ieee80211_he_operation *he_op_ie_elem);
1883
1884 /* Spectrum management */
1885 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1886 struct ieee80211_mgmt *mgmt,
1887 size_t len);
1888 /**
1889 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1890 * @sdata: the sdata of the interface which has received the frame
1891 * @elems: parsed 802.11 elements received with the frame
1892 * @current_band: indicates the current band
1893 * @sta_flags: contains information about own capabilities and restrictions
1894 * to decide which channel switch announcements can be accepted. Only the
1895 * following subset of &enum ieee80211_sta_flags are evaluated:
1896 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1897 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1898 * %IEEE80211_STA_DISABLE_160MHZ.
1899 * @bssid: the currently connected bssid (for reporting)
1900 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1901 All of them will be filled with if success only.
1902 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1903 */
1904 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1905 struct ieee802_11_elems *elems,
1906 enum nl80211_band current_band,
1907 u32 sta_flags, u8 *bssid,
1908 struct ieee80211_csa_ie *csa_ie);
1909
1910 /* Suspend/resume and hw reconfiguration */
1911 int ieee80211_reconfig(struct ieee80211_local *local);
1912 void ieee80211_stop_device(struct ieee80211_local *local);
1913
1914 int __ieee80211_suspend(struct ieee80211_hw *hw,
1915 struct cfg80211_wowlan *wowlan);
1916
__ieee80211_resume(struct ieee80211_hw * hw)1917 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1918 {
1919 struct ieee80211_local *local = hw_to_local(hw);
1920
1921 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
1922 !test_bit(SCAN_COMPLETED, &local->scanning),
1923 "%s: resume with hardware scan still in progress\n",
1924 wiphy_name(hw->wiphy));
1925
1926 return ieee80211_reconfig(hw_to_local(hw));
1927 }
1928
1929 /* utility functions/constants */
1930 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1931 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
1932 int rate, int erp, int short_preamble,
1933 int shift);
1934 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1935 struct ieee80211_tx_queue_params *qparam,
1936 int ac);
1937 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1938 bool bss_notify, bool enable_qos);
1939 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
1940 struct sta_info *sta, struct sk_buff *skb,
1941 u32 txdata_flags);
1942
1943 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1944 struct sk_buff *skb, int tid,
1945 enum nl80211_band band, u32 txdata_flags);
1946
1947 static inline void
ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid,enum nl80211_band band,u32 txdata_flags)1948 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1949 struct sk_buff *skb, int tid,
1950 enum nl80211_band band, u32 txdata_flags)
1951 {
1952 rcu_read_lock();
1953 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band, txdata_flags);
1954 rcu_read_unlock();
1955 }
1956
ieee80211_tx_skb_tid(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid)1957 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1958 struct sk_buff *skb, int tid)
1959 {
1960 struct ieee80211_chanctx_conf *chanctx_conf;
1961
1962 rcu_read_lock();
1963 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1964 if (WARN_ON(!chanctx_conf)) {
1965 rcu_read_unlock();
1966 kfree_skb(skb);
1967 return;
1968 }
1969
1970 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1971 chanctx_conf->def.chan->band, 0);
1972 rcu_read_unlock();
1973 }
1974
ieee80211_tx_skb(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb)1975 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1976 struct sk_buff *skb)
1977 {
1978 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1979 ieee80211_tx_skb_tid(sdata, skb, 7);
1980 }
1981
1982 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1983 struct ieee802_11_elems *elems,
1984 u64 filter, u32 crc, u8 *transmitter_bssid,
1985 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)1986 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1987 bool action,
1988 struct ieee802_11_elems *elems,
1989 u8 *transmitter_bssid,
1990 u8 *bss_bssid)
1991 {
1992 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0,
1993 transmitter_bssid, bss_bssid);
1994 }
1995
1996
1997 extern const int ieee802_1d_to_ac[8];
1998
ieee80211_ac_from_tid(int tid)1999 static inline int ieee80211_ac_from_tid(int tid)
2000 {
2001 return ieee802_1d_to_ac[tid & 7];
2002 }
2003
2004 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
2005 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
2006 void ieee80211_dynamic_ps_timer(struct timer_list *t);
2007 void ieee80211_send_nullfunc(struct ieee80211_local *local,
2008 struct ieee80211_sub_if_data *sdata,
2009 bool powersave);
2010 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
2011 struct ieee80211_hdr *hdr);
2012 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2013 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
2014
2015 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
2016 unsigned long queues,
2017 enum queue_stop_reason reason,
2018 bool refcounted);
2019 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
2020 struct ieee80211_sub_if_data *sdata,
2021 enum queue_stop_reason reason);
2022 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
2023 struct ieee80211_sub_if_data *sdata,
2024 enum queue_stop_reason reason);
2025 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
2026 unsigned long queues,
2027 enum queue_stop_reason reason,
2028 bool refcounted);
2029 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
2030 enum queue_stop_reason reason,
2031 bool refcounted);
2032 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
2033 enum queue_stop_reason reason,
2034 bool refcounted);
2035 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
2036 void ieee80211_add_pending_skb(struct ieee80211_local *local,
2037 struct sk_buff *skb);
2038 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
2039 struct sk_buff_head *skbs);
2040 void ieee80211_flush_queues(struct ieee80211_local *local,
2041 struct ieee80211_sub_if_data *sdata, bool drop);
2042 void __ieee80211_flush_queues(struct ieee80211_local *local,
2043 struct ieee80211_sub_if_data *sdata,
2044 unsigned int queues, bool drop);
2045
ieee80211_can_run_worker(struct ieee80211_local * local)2046 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2047 {
2048 /*
2049 * It's unsafe to try to do any work during reconfigure flow.
2050 * When the flow ends the work will be requeued.
2051 */
2052 if (local->in_reconfig)
2053 return false;
2054
2055 /*
2056 * If quiescing is set, we are racing with __ieee80211_suspend.
2057 * __ieee80211_suspend flushes the workers after setting quiescing,
2058 * and we check quiescing / suspended before enqueing new workers.
2059 * We should abort the worker to avoid the races below.
2060 */
2061 if (local->quiescing)
2062 return false;
2063
2064 /*
2065 * We might already be suspended if the following scenario occurs:
2066 * __ieee80211_suspend Control path
2067 *
2068 * if (local->quiescing)
2069 * return;
2070 * local->quiescing = true;
2071 * flush_workqueue();
2072 * queue_work(...);
2073 * local->suspended = true;
2074 * local->quiescing = false;
2075 * worker starts running...
2076 */
2077 if (local->suspended)
2078 return false;
2079
2080 return true;
2081 }
2082
2083 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2084 void ieee80211_txq_set_params(struct ieee80211_local *local);
2085 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2086 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2087 struct sta_info *sta,
2088 struct txq_info *txq, int tid);
2089 void ieee80211_txq_purge(struct ieee80211_local *local,
2090 struct txq_info *txqi);
2091 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2092 struct ieee80211_sub_if_data *sdata);
2093 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2094 struct txq_info *txqi);
2095 void ieee80211_wake_txqs(unsigned long data);
2096 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2097 u16 transaction, u16 auth_alg, u16 status,
2098 const u8 *extra, size_t extra_len, const u8 *bssid,
2099 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2100 u32 tx_flags);
2101 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2102 const u8 *da, const u8 *bssid,
2103 u16 stype, u16 reason,
2104 bool send_frame, u8 *frame_buf);
2105
2106 enum {
2107 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
2108 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
2109 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
2110 };
2111
2112 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
2113 size_t buffer_len,
2114 struct ieee80211_scan_ies *ie_desc,
2115 const u8 *ie, size_t ie_len,
2116 u8 bands_used, u32 *rate_masks,
2117 struct cfg80211_chan_def *chandef,
2118 u32 flags);
2119 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2120 const u8 *src, const u8 *dst,
2121 u32 ratemask,
2122 struct ieee80211_channel *chan,
2123 const u8 *ssid, size_t ssid_len,
2124 const u8 *ie, size_t ie_len,
2125 u32 flags);
2126 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2127 struct ieee802_11_elems *elems,
2128 enum nl80211_band band, u32 *basic_rates);
2129 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2130 enum ieee80211_smps_mode smps_mode);
2131 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2132 enum ieee80211_smps_mode smps_mode);
2133 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
2134 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
2135
2136 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2137 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2138 u16 cap);
2139 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2140 const struct cfg80211_chan_def *chandef,
2141 u16 prot_mode, bool rifs_mode);
2142 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2143 const struct cfg80211_chan_def *chandef);
2144 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2145 u32 cap);
2146 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2147 const struct cfg80211_chan_def *chandef);
2148 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2149 u8 *ieee80211_ie_build_he_cap(u8 *pos,
2150 const struct ieee80211_sta_he_cap *he_cap,
2151 u8 *end);
2152 u8 *ieee80211_ie_build_he_oper(u8 *pos);
2153 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2154 const struct ieee80211_supported_band *sband,
2155 const u8 *srates, int srates_len, u32 *rates);
2156 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2157 struct sk_buff *skb, bool need_basic,
2158 enum nl80211_band band);
2159 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2160 struct sk_buff *skb, bool need_basic,
2161 enum nl80211_band band);
2162 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2163
2164 /* channel management */
2165 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2166 struct cfg80211_chan_def *chandef);
2167 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw,
2168 const struct ieee80211_vht_operation *oper,
2169 const struct ieee80211_ht_operation *htop,
2170 struct cfg80211_chan_def *chandef);
2171 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2172
2173 int __must_check
2174 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
2175 const struct cfg80211_chan_def *chandef,
2176 enum ieee80211_chanctx_mode mode);
2177 int __must_check
2178 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
2179 const struct cfg80211_chan_def *chandef,
2180 enum ieee80211_chanctx_mode mode,
2181 bool radar_required);
2182 int __must_check
2183 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2184 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2185
2186 int __must_check
2187 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2188 const struct cfg80211_chan_def *chandef,
2189 u32 *changed);
2190 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2191 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2192 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2193 bool clear);
2194 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2195 struct ieee80211_chanctx *ctx);
2196
2197 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2198 struct ieee80211_chanctx *chanctx);
2199 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2200 struct ieee80211_chanctx *ctx);
2201 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2202
2203 void ieee80211_dfs_cac_timer(unsigned long data);
2204 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2205 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2206 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2207 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2208 struct cfg80211_csa_settings *csa_settings);
2209
2210 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2211 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2212 const struct ieee80211_cipher_scheme *
2213 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2214 enum nl80211_iftype iftype);
2215 int ieee80211_cs_headroom(struct ieee80211_local *local,
2216 struct cfg80211_crypto_settings *crypto,
2217 enum nl80211_iftype iftype);
2218 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2219 struct ieee80211_sub_if_data *sdata);
2220 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2221 const struct cfg80211_chan_def *chandef,
2222 enum ieee80211_chanctx_mode chanmode,
2223 u8 radar_detect);
2224 int ieee80211_max_num_channels(struct ieee80211_local *local);
2225 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta);
2226 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2227 struct ieee80211_chanctx *ctx);
2228
2229 /* TDLS */
2230 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2231 const u8 *peer, u8 action_code, u8 dialog_token,
2232 u16 status_code, u32 peer_capability,
2233 bool initiator, const u8 *extra_ies,
2234 size_t extra_ies_len);
2235 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2236 const u8 *peer, enum nl80211_tdls_operation oper);
2237 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2238 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2239 const u8 *addr, u8 oper_class,
2240 struct cfg80211_chan_def *chandef);
2241 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2242 struct net_device *dev,
2243 const u8 *addr);
2244 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2245 void ieee80211_tdls_chsw_work(struct work_struct *wk);
2246 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2247 const u8 *peer, u16 reason);
2248 const char *ieee80211_get_reason_code_string(u16 reason_code);
2249
2250 extern const struct ethtool_ops ieee80211_ethtool_ops;
2251
2252 #ifdef CONFIG_MAC80211_NOINLINE
2253 #define debug_noinline noinline
2254 #else
2255 #define debug_noinline
2256 #endif
2257
2258 #endif /* IEEE80211_I_H */
2259
