1 /*
2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
5 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net>
6 * Copyright 2013-2015 Intel Mobile Communications GmbH
7 * Copyright (C) 2018 Intel Corporation
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14 #ifndef IEEE80211_I_H
15 #define IEEE80211_I_H
16
17 #include <linux/kernel.h>
18 #include <linux/device.h>
19 #include <linux/if_ether.h>
20 #include <linux/interrupt.h>
21 #include <linux/list.h>
22 #include <linux/netdevice.h>
23 #include <linux/skbuff.h>
24 #include <linux/workqueue.h>
25 #include <linux/types.h>
26 #include <linux/spinlock.h>
27 #include <linux/etherdevice.h>
28 #include <linux/leds.h>
29 #include <linux/idr.h>
30 #include <linux/rhashtable.h>
31 #include <net/ieee80211_radiotap.h>
32 #include <net/cfg80211.h>
33 #include <net/mac80211.h>
34 #include <net/fq.h>
35 #include "key.h"
36 #include "sta_info.h"
37 #include "debug.h"
38
39 extern const struct cfg80211_ops mac80211_config_ops;
40
41 struct ieee80211_local;
42
43 /* Maximum number of broadcast/multicast frames to buffer when some of the
44 * associated stations are using power saving. */
45 #define AP_MAX_BC_BUFFER 128
46
47 /* Maximum number of frames buffered to all STAs, including multicast frames.
48 * Note: increasing this limit increases the potential memory requirement. Each
49 * frame can be up to about 2 kB long. */
50 #define TOTAL_MAX_TX_BUFFER 512
51
52 /* Required encryption head and tailroom */
53 #define IEEE80211_ENCRYPT_HEADROOM 8
54 #define IEEE80211_ENCRYPT_TAILROOM 18
55
56 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
57 * reception of at least three fragmented frames. This limit can be increased
58 * by changing this define, at the cost of slower frame reassembly and
59 * increased memory use (about 2 kB of RAM per entry). */
60 #define IEEE80211_FRAGMENT_MAX 4
61
62 /* power level hasn't been configured (or set to automatic) */
63 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
64
65 /*
66 * Some APs experience problems when working with U-APSD. Decreasing the
67 * probability of that happening by using legacy mode for all ACs but VO isn't
68 * enough.
69 *
70 * Cisco 4410N originally forced us to enable VO by default only because it
71 * treated non-VO ACs as legacy.
72 *
73 * However some APs (notably Netgear R7000) silently reclassify packets to
74 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
75 * clients would never see some frames (e.g. ARP responses) or would fetch them
76 * accidentally after a long time.
77 *
78 * It makes little sense to enable u-APSD queues by default because it needs
79 * userspace applications to be aware of it to actually take advantage of the
80 * possible additional powersavings. Implicitly depending on driver autotrigger
81 * frame support doesn't make much sense.
82 */
83 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
84
85 #define IEEE80211_DEFAULT_MAX_SP_LEN \
86 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
87
88 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS];
89
90 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
91
92 #define IEEE80211_MAX_NAN_INSTANCE_ID 255
93
94 struct ieee80211_fragment_entry {
95 struct sk_buff_head skb_list;
96 unsigned long first_frag_time;
97 u16 seq;
98 u16 extra_len;
99 u16 last_frag;
100 u8 rx_queue;
101 bool check_sequential_pn; /* needed for CCMP/GCMP */
102 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
103 };
104
105
106 struct ieee80211_bss {
107 u32 device_ts_beacon, device_ts_presp;
108
109 bool wmm_used;
110 bool uapsd_supported;
111
112 #define IEEE80211_MAX_SUPP_RATES 32
113 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
114 size_t supp_rates_len;
115 struct ieee80211_rate *beacon_rate;
116
117 /*
118 * During association, we save an ERP value from a probe response so
119 * that we can feed ERP info to the driver when handling the
120 * association completes. these fields probably won't be up-to-date
121 * otherwise, you probably don't want to use them.
122 */
123 bool has_erp_value;
124 u8 erp_value;
125
126 /* Keep track of the corruption of the last beacon/probe response. */
127 u8 corrupt_data;
128
129 /* Keep track of what bits of information we have valid info for. */
130 u8 valid_data;
131 };
132
133 /**
134 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
135 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
136 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
137 *
138 * These are bss flags that are attached to a bss in the
139 * @corrupt_data field of &struct ieee80211_bss.
140 */
141 enum ieee80211_bss_corrupt_data_flags {
142 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
143 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
144 };
145
146 /**
147 * enum ieee80211_valid_data_flags - BSS valid data flags
148 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
149 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
150 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
151 *
152 * These are bss flags that are attached to a bss in the
153 * @valid_data field of &struct ieee80211_bss. They show which parts
154 * of the data structure were received as a result of an un-corrupted
155 * beacon/probe response.
156 */
157 enum ieee80211_bss_valid_data_flags {
158 IEEE80211_BSS_VALID_WMM = BIT(1),
159 IEEE80211_BSS_VALID_RATES = BIT(2),
160 IEEE80211_BSS_VALID_ERP = BIT(3)
161 };
162
163 typedef unsigned __bitwise ieee80211_tx_result;
164 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
165 #define TX_DROP ((__force ieee80211_tx_result) 1u)
166 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
167
168 #define IEEE80211_TX_NO_SEQNO BIT(0)
169 #define IEEE80211_TX_UNICAST BIT(1)
170 #define IEEE80211_TX_PS_BUFFERED BIT(2)
171
172 struct ieee80211_tx_data {
173 struct sk_buff *skb;
174 struct sk_buff_head skbs;
175 struct ieee80211_local *local;
176 struct ieee80211_sub_if_data *sdata;
177 struct sta_info *sta;
178 struct ieee80211_key *key;
179 struct ieee80211_tx_rate rate;
180
181 unsigned int flags;
182 };
183
184
185 typedef unsigned __bitwise ieee80211_rx_result;
186 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
187 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
188 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
189 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
190
191 /**
192 * enum ieee80211_packet_rx_flags - packet RX flags
193 * @IEEE80211_RX_AMSDU: a-MSDU packet
194 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
195 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
196 *
197 * These are per-frame flags that are attached to a frame in the
198 * @rx_flags field of &struct ieee80211_rx_status.
199 */
200 enum ieee80211_packet_rx_flags {
201 IEEE80211_RX_AMSDU = BIT(3),
202 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
203 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
204 };
205
206 /**
207 * enum ieee80211_rx_flags - RX data flags
208 *
209 * @IEEE80211_RX_CMNTR: received on cooked monitor already
210 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
211 * to cfg80211_report_obss_beacon().
212 *
213 * These flags are used across handling multiple interfaces
214 * for a single frame.
215 */
216 enum ieee80211_rx_flags {
217 IEEE80211_RX_CMNTR = BIT(0),
218 IEEE80211_RX_BEACON_REPORTED = BIT(1),
219 };
220
221 struct ieee80211_rx_data {
222 struct napi_struct *napi;
223 struct sk_buff *skb;
224 struct ieee80211_local *local;
225 struct ieee80211_sub_if_data *sdata;
226 struct sta_info *sta;
227 struct ieee80211_key *key;
228
229 unsigned int flags;
230
231 /*
232 * Index into sequence numbers array, 0..16
233 * since the last (16) is used for non-QoS,
234 * will be 16 on non-QoS frames.
235 */
236 int seqno_idx;
237
238 /*
239 * Index into the security IV/PN arrays, 0..16
240 * since the last (16) is used for CCMP-encrypted
241 * management frames, will be set to 16 on mgmt
242 * frames and 0 on non-QoS frames.
243 */
244 int security_idx;
245
246 u32 tkip_iv32;
247 u16 tkip_iv16;
248 };
249
250 struct ieee80211_csa_settings {
251 const u16 *counter_offsets_beacon;
252 const u16 *counter_offsets_presp;
253
254 int n_counter_offsets_beacon;
255 int n_counter_offsets_presp;
256
257 u8 count;
258 };
259
260 struct beacon_data {
261 u8 *head, *tail;
262 int head_len, tail_len;
263 struct ieee80211_meshconf_ie *meshconf;
264 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
265 u8 csa_current_counter;
266 struct rcu_head rcu_head;
267 };
268
269 struct probe_resp {
270 struct rcu_head rcu_head;
271 int len;
272 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
273 u8 data[0];
274 };
275
276 struct ps_data {
277 /* yes, this looks ugly, but guarantees that we can later use
278 * bitmap_empty :)
279 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
280 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
281 __aligned(__alignof__(unsigned long));
282 struct sk_buff_head bc_buf;
283 atomic_t num_sta_ps; /* number of stations in PS mode */
284 int dtim_count;
285 bool dtim_bc_mc;
286 };
287
288 struct ieee80211_if_ap {
289 struct beacon_data __rcu *beacon;
290 struct probe_resp __rcu *probe_resp;
291
292 /* to be used after channel switch. */
293 struct cfg80211_beacon_data *next_beacon;
294 struct list_head vlans; /* write-protected with RTNL and local->mtx */
295
296 struct ps_data ps;
297 atomic_t num_mcast_sta; /* number of stations receiving multicast */
298 enum ieee80211_smps_mode req_smps, /* requested smps mode */
299 driver_smps_mode; /* smps mode request */
300
301 struct work_struct request_smps_work;
302 bool multicast_to_unicast;
303 };
304
305 struct ieee80211_if_wds {
306 struct sta_info *sta;
307 u8 remote_addr[ETH_ALEN];
308 };
309
310 struct ieee80211_if_vlan {
311 struct list_head list; /* write-protected with RTNL and local->mtx */
312
313 /* used for all tx if the VLAN is configured to 4-addr mode */
314 struct sta_info __rcu *sta;
315 atomic_t num_mcast_sta; /* number of stations receiving multicast */
316 };
317
318 struct mesh_stats {
319 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
320 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
321 __u32 fwded_frames; /* Mesh total forwarded frames */
322 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
323 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
324 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
325 };
326
327 #define PREQ_Q_F_START 0x1
328 #define PREQ_Q_F_REFRESH 0x2
329 struct mesh_preq_queue {
330 struct list_head list;
331 u8 dst[ETH_ALEN];
332 u8 flags;
333 };
334
335 struct ieee80211_roc_work {
336 struct list_head list;
337
338 struct ieee80211_sub_if_data *sdata;
339
340 struct ieee80211_channel *chan;
341
342 bool started, abort, hw_begun, notified;
343 bool on_channel;
344
345 unsigned long start_time;
346
347 u32 duration, req_duration;
348 struct sk_buff *frame;
349 u64 cookie, mgmt_tx_cookie;
350 enum ieee80211_roc_type type;
351 };
352
353 /* flags used in struct ieee80211_if_managed.flags */
354 enum ieee80211_sta_flags {
355 IEEE80211_STA_CONNECTION_POLL = BIT(1),
356 IEEE80211_STA_CONTROL_PORT = BIT(2),
357 IEEE80211_STA_DISABLE_HT = BIT(4),
358 IEEE80211_STA_MFP_ENABLED = BIT(6),
359 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
360 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
361 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
362 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
363 IEEE80211_STA_DISABLE_VHT = BIT(11),
364 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
365 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
366 IEEE80211_STA_DISABLE_WMM = BIT(14),
367 IEEE80211_STA_ENABLE_RRM = BIT(15),
368 IEEE80211_STA_DISABLE_HE = BIT(16),
369 };
370
371 struct ieee80211_mgd_auth_data {
372 struct cfg80211_bss *bss;
373 unsigned long timeout;
374 int tries;
375 u16 algorithm, expected_transaction;
376
377 u8 key[WLAN_KEY_LEN_WEP104];
378 u8 key_len, key_idx;
379 bool done;
380 bool timeout_started;
381
382 u16 sae_trans, sae_status;
383 size_t data_len;
384 u8 data[];
385 };
386
387 struct ieee80211_mgd_assoc_data {
388 struct cfg80211_bss *bss;
389 const u8 *supp_rates;
390
391 unsigned long timeout;
392 int tries;
393
394 u16 capability;
395 u8 prev_bssid[ETH_ALEN];
396 u8 ssid[IEEE80211_MAX_SSID_LEN];
397 u8 ssid_len;
398 u8 supp_rates_len;
399 bool wmm, uapsd;
400 bool need_beacon;
401 bool synced;
402 bool timeout_started;
403
404 u8 ap_ht_param;
405
406 struct ieee80211_vht_cap ap_vht_cap;
407
408 u8 fils_nonces[2 * FILS_NONCE_LEN];
409 u8 fils_kek[FILS_MAX_KEK_LEN];
410 size_t fils_kek_len;
411
412 size_t ie_len;
413 u8 ie[];
414 };
415
416 struct ieee80211_sta_tx_tspec {
417 /* timestamp of the first packet in the time slice */
418 unsigned long time_slice_start;
419
420 u32 admitted_time; /* in usecs, unlike over the air */
421 u8 tsid;
422 s8 up; /* signed to be able to invalidate with -1 during teardown */
423
424 /* consumed TX time in microseconds in the time slice */
425 u32 consumed_tx_time;
426 enum {
427 TX_TSPEC_ACTION_NONE = 0,
428 TX_TSPEC_ACTION_DOWNGRADE,
429 TX_TSPEC_ACTION_STOP_DOWNGRADE,
430 } action;
431 bool downgraded;
432 };
433
434 DECLARE_EWMA(beacon_signal, 4, 4)
435
436 struct ieee80211_if_managed {
437 struct timer_list timer;
438 struct timer_list conn_mon_timer;
439 struct timer_list bcn_mon_timer;
440 struct timer_list chswitch_timer;
441 struct work_struct monitor_work;
442 struct work_struct chswitch_work;
443 struct work_struct beacon_connection_loss_work;
444 struct work_struct csa_connection_drop_work;
445
446 unsigned long beacon_timeout;
447 unsigned long probe_timeout;
448 int probe_send_count;
449 bool nullfunc_failed;
450 bool connection_loss;
451
452 struct cfg80211_bss *associated;
453 struct ieee80211_mgd_auth_data *auth_data;
454 struct ieee80211_mgd_assoc_data *assoc_data;
455
456 u8 bssid[ETH_ALEN] __aligned(2);
457
458 u16 aid;
459
460 bool powersave; /* powersave requested for this iface */
461 bool broken_ap; /* AP is broken -- turn off powersave */
462 bool have_beacon;
463 u8 dtim_period;
464 enum ieee80211_smps_mode req_smps, /* requested smps mode */
465 driver_smps_mode; /* smps mode request */
466
467 struct work_struct request_smps_work;
468
469 unsigned int flags;
470
471 bool csa_waiting_bcn;
472 bool csa_ignored_same_chan;
473
474 bool beacon_crc_valid;
475 u32 beacon_crc;
476
477 bool status_acked;
478 bool status_received;
479 __le16 status_fc;
480
481 enum {
482 IEEE80211_MFP_DISABLED,
483 IEEE80211_MFP_OPTIONAL,
484 IEEE80211_MFP_REQUIRED
485 } mfp; /* management frame protection */
486
487 /*
488 * Bitmask of enabled u-apsd queues,
489 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
490 * to take effect.
491 */
492 unsigned int uapsd_queues;
493
494 /*
495 * Maximum number of buffered frames AP can deliver during a
496 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
497 * Needs a new association to take effect.
498 */
499 unsigned int uapsd_max_sp_len;
500
501 int wmm_last_param_set;
502
503 u8 use_4addr;
504
505 s16 p2p_noa_index;
506
507 struct ewma_beacon_signal ave_beacon_signal;
508
509 /*
510 * Number of Beacon frames used in ave_beacon_signal. This can be used
511 * to avoid generating less reliable cqm events that would be based
512 * only on couple of received frames.
513 */
514 unsigned int count_beacon_signal;
515
516 /* Number of times beacon loss was invoked. */
517 unsigned int beacon_loss_count;
518
519 /*
520 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
521 * that triggered a cqm event. 0 indicates that no event has been
522 * generated for the current association.
523 */
524 int last_cqm_event_signal;
525
526 /*
527 * State variables for keeping track of RSSI of the AP currently
528 * connected to and informing driver when RSSI has gone
529 * below/above a certain threshold.
530 */
531 int rssi_min_thold, rssi_max_thold;
532 int last_ave_beacon_signal;
533
534 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
535 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
536 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
537 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
538
539 /* TDLS support */
540 u8 tdls_peer[ETH_ALEN] __aligned(2);
541 struct delayed_work tdls_peer_del_work;
542 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
543 struct sk_buff *teardown_skb; /* A copy to send through the AP */
544 spinlock_t teardown_lock; /* To lock changing teardown_skb */
545 bool tdls_chan_switch_prohibited;
546 bool tdls_wider_bw_prohibited;
547
548 /* WMM-AC TSPEC support */
549 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
550 /* Use a separate work struct so that we can do something here
551 * while the sdata->work is flushing the queues, for example.
552 * otherwise, in scenarios where we hardly get any traffic out
553 * on the BE queue, but there's a lot of VO traffic, we might
554 * get stuck in a downgraded situation and flush takes forever.
555 */
556 struct delayed_work tx_tspec_wk;
557 };
558
559 struct ieee80211_if_ibss {
560 struct timer_list timer;
561 struct work_struct csa_connection_drop_work;
562
563 unsigned long last_scan_completed;
564
565 u32 basic_rates;
566
567 bool fixed_bssid;
568 bool fixed_channel;
569 bool privacy;
570
571 bool control_port;
572 bool userspace_handles_dfs;
573
574 u8 bssid[ETH_ALEN] __aligned(2);
575 u8 ssid[IEEE80211_MAX_SSID_LEN];
576 u8 ssid_len, ie_len;
577 u8 *ie;
578 struct cfg80211_chan_def chandef;
579
580 unsigned long ibss_join_req;
581 /* probe response/beacon for IBSS */
582 struct beacon_data __rcu *presp;
583
584 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
585 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
586
587 spinlock_t incomplete_lock;
588 struct list_head incomplete_stations;
589
590 enum {
591 IEEE80211_IBSS_MLME_SEARCH,
592 IEEE80211_IBSS_MLME_JOINED,
593 } state;
594 };
595
596 /**
597 * struct ieee80211_if_ocb - OCB mode state
598 *
599 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
600 * @wrkq_flags: OCB deferred task action
601 * @incomplete_lock: delayed STA insertion lock
602 * @incomplete_stations: list of STAs waiting for delayed insertion
603 * @joined: indication if the interface is connected to an OCB network
604 */
605 struct ieee80211_if_ocb {
606 struct timer_list housekeeping_timer;
607 unsigned long wrkq_flags;
608
609 spinlock_t incomplete_lock;
610 struct list_head incomplete_stations;
611
612 bool joined;
613 };
614
615 /**
616 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
617 *
618 * these declarations define the interface, which enables
619 * vendor-specific mesh synchronization
620 *
621 */
622 struct ieee802_11_elems;
623 struct ieee80211_mesh_sync_ops {
624 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
625 u16 stype,
626 struct ieee80211_mgmt *mgmt,
627 struct ieee802_11_elems *elems,
628 struct ieee80211_rx_status *rx_status);
629
630 /* should be called with beacon_data under RCU read lock */
631 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
632 struct beacon_data *beacon);
633 /* add other framework functions here */
634 };
635
636 struct mesh_csa_settings {
637 struct rcu_head rcu_head;
638 struct cfg80211_csa_settings settings;
639 };
640
641 struct ieee80211_if_mesh {
642 struct timer_list housekeeping_timer;
643 struct timer_list mesh_path_timer;
644 struct timer_list mesh_path_root_timer;
645
646 unsigned long wrkq_flags;
647 unsigned long mbss_changed;
648
649 bool userspace_handles_dfs;
650
651 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
652 size_t mesh_id_len;
653 /* Active Path Selection Protocol Identifier */
654 u8 mesh_pp_id;
655 /* Active Path Selection Metric Identifier */
656 u8 mesh_pm_id;
657 /* Congestion Control Mode Identifier */
658 u8 mesh_cc_id;
659 /* Synchronization Protocol Identifier */
660 u8 mesh_sp_id;
661 /* Authentication Protocol Identifier */
662 u8 mesh_auth_id;
663 /* Local mesh Sequence Number */
664 u32 sn;
665 /* Last used PREQ ID */
666 u32 preq_id;
667 atomic_t mpaths;
668 /* Timestamp of last SN update */
669 unsigned long last_sn_update;
670 /* Time when it's ok to send next PERR */
671 unsigned long next_perr;
672 /* Timestamp of last PREQ sent */
673 unsigned long last_preq;
674 struct mesh_rmc *rmc;
675 spinlock_t mesh_preq_queue_lock;
676 struct mesh_preq_queue preq_queue;
677 int preq_queue_len;
678 struct mesh_stats mshstats;
679 struct mesh_config mshcfg;
680 atomic_t estab_plinks;
681 u32 mesh_seqnum;
682 bool accepting_plinks;
683 int num_gates;
684 struct beacon_data __rcu *beacon;
685 const u8 *ie;
686 u8 ie_len;
687 enum {
688 IEEE80211_MESH_SEC_NONE = 0x0,
689 IEEE80211_MESH_SEC_AUTHED = 0x1,
690 IEEE80211_MESH_SEC_SECURED = 0x2,
691 } security;
692 bool user_mpm;
693 /* Extensible Synchronization Framework */
694 const struct ieee80211_mesh_sync_ops *sync_ops;
695 s64 sync_offset_clockdrift_max;
696 spinlock_t sync_offset_lock;
697 /* mesh power save */
698 enum nl80211_mesh_power_mode nonpeer_pm;
699 int ps_peers_light_sleep;
700 int ps_peers_deep_sleep;
701 struct ps_data ps;
702 /* Channel Switching Support */
703 struct mesh_csa_settings __rcu *csa;
704 enum {
705 IEEE80211_MESH_CSA_ROLE_NONE,
706 IEEE80211_MESH_CSA_ROLE_INIT,
707 IEEE80211_MESH_CSA_ROLE_REPEATER,
708 } csa_role;
709 u8 chsw_ttl;
710 u16 pre_value;
711
712 /* offset from skb->data while building IE */
713 int meshconf_offset;
714
715 struct mesh_table *mesh_paths;
716 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */
717 int mesh_paths_generation;
718 int mpp_paths_generation;
719 };
720
721 #ifdef CONFIG_MAC80211_MESH
722 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
723 do { (msh)->mshstats.name++; } while (0)
724 #else
725 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
726 do { } while (0)
727 #endif
728
729 /**
730 * enum ieee80211_sub_if_data_flags - virtual interface flags
731 *
732 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
733 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
734 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
735 * associated stations and deliver multicast frames both
736 * back to wireless media and to the local net stack.
737 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
738 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
739 */
740 enum ieee80211_sub_if_data_flags {
741 IEEE80211_SDATA_ALLMULTI = BIT(0),
742 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
743 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
744 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
745 IEEE80211_SDATA_IN_DRIVER = BIT(5),
746 };
747
748 /**
749 * enum ieee80211_sdata_state_bits - virtual interface state bits
750 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
751 * mirrors netif_running() but is separate for interface type
752 * change handling while the interface is up
753 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
754 * mode, so queues are stopped
755 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
756 * to offchannel, reset when offchannel returns
757 */
758 enum ieee80211_sdata_state_bits {
759 SDATA_STATE_RUNNING,
760 SDATA_STATE_OFFCHANNEL,
761 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
762 };
763
764 /**
765 * enum ieee80211_chanctx_mode - channel context configuration mode
766 *
767 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
768 * multiple interfaces
769 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
770 * only by a single interface. This can be used for example for
771 * non-fixed channel IBSS.
772 */
773 enum ieee80211_chanctx_mode {
774 IEEE80211_CHANCTX_SHARED,
775 IEEE80211_CHANCTX_EXCLUSIVE
776 };
777
778 /**
779 * enum ieee80211_chanctx_replace_state - channel context replacement state
780 *
781 * This is used for channel context in-place reservations that require channel
782 * context switch/swap.
783 *
784 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
785 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
786 * by a (not yet registered) channel context pointed by %replace_ctx.
787 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
788 * replaces an existing channel context pointed to by %replace_ctx.
789 */
790 enum ieee80211_chanctx_replace_state {
791 IEEE80211_CHANCTX_REPLACE_NONE,
792 IEEE80211_CHANCTX_WILL_BE_REPLACED,
793 IEEE80211_CHANCTX_REPLACES_OTHER,
794 };
795
796 struct ieee80211_chanctx {
797 struct list_head list;
798 struct rcu_head rcu_head;
799
800 struct list_head assigned_vifs;
801 struct list_head reserved_vifs;
802
803 enum ieee80211_chanctx_replace_state replace_state;
804 struct ieee80211_chanctx *replace_ctx;
805
806 enum ieee80211_chanctx_mode mode;
807 bool driver_present;
808
809 struct ieee80211_chanctx_conf conf;
810 };
811
812 struct mac80211_qos_map {
813 struct cfg80211_qos_map qos_map;
814 struct rcu_head rcu_head;
815 };
816
817 enum txq_info_flags {
818 IEEE80211_TXQ_STOP,
819 IEEE80211_TXQ_AMPDU,
820 IEEE80211_TXQ_NO_AMSDU,
821 };
822
823 /**
824 * struct txq_info - per tid queue
825 *
826 * @tin: contains packets split into multiple flows
827 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
828 * a fq_flow which is already owned by a different tin
829 * @def_cvars: codel vars for @def_flow
830 * @frags: used to keep fragments created after dequeue
831 */
832 struct txq_info {
833 struct fq_tin tin;
834 struct fq_flow def_flow;
835 struct codel_vars def_cvars;
836 struct codel_stats cstats;
837 struct sk_buff_head frags;
838 unsigned long flags;
839
840 /* keep last! */
841 struct ieee80211_txq txq;
842 };
843
844 struct ieee80211_if_mntr {
845 u32 flags;
846 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
847
848 struct list_head list;
849 };
850
851 /**
852 * struct ieee80211_if_nan - NAN state
853 *
854 * @conf: current NAN configuration
855 * @func_ids: a bitmap of available instance_id's
856 */
857 struct ieee80211_if_nan {
858 struct cfg80211_nan_conf conf;
859
860 /* protects function_inst_ids */
861 spinlock_t func_lock;
862 struct idr function_inst_ids;
863 };
864
865 struct ieee80211_sub_if_data {
866 struct list_head list;
867
868 struct wireless_dev wdev;
869
870 /* keys */
871 struct list_head key_list;
872
873 /* count for keys needing tailroom space allocation */
874 int crypto_tx_tailroom_needed_cnt;
875 int crypto_tx_tailroom_pending_dec;
876 struct delayed_work dec_tailroom_needed_wk;
877
878 struct net_device *dev;
879 struct ieee80211_local *local;
880
881 unsigned int flags;
882
883 unsigned long state;
884
885 char name[IFNAMSIZ];
886
887 /* Fragment table for host-based reassembly */
888 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
889 unsigned int fragment_next;
890
891 /* TID bitmap for NoAck policy */
892 u16 noack_map;
893
894 /* bit field of ACM bits (BIT(802.1D tag)) */
895 u8 wmm_acm;
896
897 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
898 struct ieee80211_key __rcu *default_unicast_key;
899 struct ieee80211_key __rcu *default_multicast_key;
900 struct ieee80211_key __rcu *default_mgmt_key;
901
902 u16 sequence_number;
903 __be16 control_port_protocol;
904 bool control_port_no_encrypt;
905 bool control_port_over_nl80211;
906 int encrypt_headroom;
907
908 atomic_t num_tx_queued;
909 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
910 struct mac80211_qos_map __rcu *qos_map;
911
912 struct work_struct csa_finalize_work;
913 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
914 struct cfg80211_chan_def csa_chandef;
915
916 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
917 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
918
919 /* context reservation -- protected with chanctx_mtx */
920 struct ieee80211_chanctx *reserved_chanctx;
921 struct cfg80211_chan_def reserved_chandef;
922 bool reserved_radar_required;
923 bool reserved_ready;
924
925 /* used to reconfigure hardware SM PS */
926 struct work_struct recalc_smps;
927
928 struct work_struct work;
929 struct sk_buff_head skb_queue;
930
931 u8 needed_rx_chains;
932 enum ieee80211_smps_mode smps_mode;
933
934 int user_power_level; /* in dBm */
935 int ap_power_level; /* in dBm */
936
937 bool radar_required;
938 struct delayed_work dfs_cac_timer_work;
939
940 /*
941 * AP this belongs to: self in AP mode and
942 * corresponding AP in VLAN mode, NULL for
943 * all others (might be needed later in IBSS)
944 */
945 struct ieee80211_if_ap *bss;
946
947 /* bitmap of allowed (non-MCS) rate indexes for rate control */
948 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
949
950 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
951 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
952
953 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
954 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
955
956 union {
957 struct ieee80211_if_ap ap;
958 struct ieee80211_if_wds wds;
959 struct ieee80211_if_vlan vlan;
960 struct ieee80211_if_managed mgd;
961 struct ieee80211_if_ibss ibss;
962 struct ieee80211_if_mesh mesh;
963 struct ieee80211_if_ocb ocb;
964 struct ieee80211_if_mntr mntr;
965 struct ieee80211_if_nan nan;
966 } u;
967
968 #ifdef CONFIG_MAC80211_DEBUGFS
969 struct {
970 struct dentry *subdir_stations;
971 struct dentry *default_unicast_key;
972 struct dentry *default_multicast_key;
973 struct dentry *default_mgmt_key;
974 } debugfs;
975 #endif
976
977 /* must be last, dynamically sized area in this! */
978 struct ieee80211_vif vif;
979 };
980
981 static inline
vif_to_sdata(struct ieee80211_vif * p)982 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
983 {
984 return container_of(p, struct ieee80211_sub_if_data, vif);
985 }
986
sdata_lock(struct ieee80211_sub_if_data * sdata)987 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
988 __acquires(&sdata->wdev.mtx)
989 {
990 mutex_lock(&sdata->wdev.mtx);
991 __acquire(&sdata->wdev.mtx);
992 }
993
sdata_unlock(struct ieee80211_sub_if_data * sdata)994 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
995 __releases(&sdata->wdev.mtx)
996 {
997 mutex_unlock(&sdata->wdev.mtx);
998 __release(&sdata->wdev.mtx);
999 }
1000
1001 #define sdata_dereference(p, sdata) \
1002 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
1003
1004 static inline void
sdata_assert_lock(struct ieee80211_sub_if_data * sdata)1005 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
1006 {
1007 lockdep_assert_held(&sdata->wdev.mtx);
1008 }
1009
1010 static inline int
ieee80211_chandef_get_shift(struct cfg80211_chan_def * chandef)1011 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1012 {
1013 switch (chandef->width) {
1014 case NL80211_CHAN_WIDTH_5:
1015 return 2;
1016 case NL80211_CHAN_WIDTH_10:
1017 return 1;
1018 default:
1019 return 0;
1020 }
1021 }
1022
1023 static inline int
ieee80211_vif_get_shift(struct ieee80211_vif * vif)1024 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1025 {
1026 struct ieee80211_chanctx_conf *chanctx_conf;
1027 int shift = 0;
1028
1029 rcu_read_lock();
1030 chanctx_conf = rcu_dereference(vif->chanctx_conf);
1031 if (chanctx_conf)
1032 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1033 rcu_read_unlock();
1034
1035 return shift;
1036 }
1037
1038 enum {
1039 IEEE80211_RX_MSG = 1,
1040 IEEE80211_TX_STATUS_MSG = 2,
1041 };
1042
1043 enum queue_stop_reason {
1044 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1045 IEEE80211_QUEUE_STOP_REASON_PS,
1046 IEEE80211_QUEUE_STOP_REASON_CSA,
1047 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1048 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1049 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1050 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1051 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1052 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1053 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1054
1055 IEEE80211_QUEUE_STOP_REASONS,
1056 };
1057
1058 #ifdef CONFIG_MAC80211_LEDS
1059 struct tpt_led_trigger {
1060 char name[32];
1061 const struct ieee80211_tpt_blink *blink_table;
1062 unsigned int blink_table_len;
1063 struct timer_list timer;
1064 struct ieee80211_local *local;
1065 unsigned long prev_traffic;
1066 unsigned long tx_bytes, rx_bytes;
1067 unsigned int active, want;
1068 bool running;
1069 };
1070 #endif
1071
1072 /**
1073 * mac80211 scan flags - currently active scan mode
1074 *
1075 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1076 * well be on the operating channel
1077 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1078 * determine if we are on the operating channel or not
1079 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1080 * channel. This should not interrupt normal traffic.
1081 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1082 * that the scan completed.
1083 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1084 * a scan complete for an aborted scan.
1085 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1086 * cancelled.
1087 */
1088 enum {
1089 SCAN_SW_SCANNING,
1090 SCAN_HW_SCANNING,
1091 SCAN_ONCHANNEL_SCANNING,
1092 SCAN_COMPLETED,
1093 SCAN_ABORTED,
1094 SCAN_HW_CANCELLED,
1095 };
1096
1097 /**
1098 * enum mac80211_scan_state - scan state machine states
1099 *
1100 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1101 * determines if we should keep on scanning or switch back to the
1102 * operating channel
1103 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1104 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1105 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1106 * send out data
1107 * @SCAN_RESUME: Resume the scan and scan the next channel
1108 * @SCAN_ABORT: Abort the scan and go back to operating channel
1109 */
1110 enum mac80211_scan_state {
1111 SCAN_DECISION,
1112 SCAN_SET_CHANNEL,
1113 SCAN_SEND_PROBE,
1114 SCAN_SUSPEND,
1115 SCAN_RESUME,
1116 SCAN_ABORT,
1117 };
1118
1119 struct ieee80211_local {
1120 /* embed the driver visible part.
1121 * don't cast (use the static inlines below), but we keep
1122 * it first anyway so they become a no-op */
1123 struct ieee80211_hw hw;
1124
1125 struct fq fq;
1126 struct codel_vars *cvars;
1127 struct codel_params cparams;
1128
1129 const struct ieee80211_ops *ops;
1130
1131 /*
1132 * private workqueue to mac80211. mac80211 makes this accessible
1133 * via ieee80211_queue_work()
1134 */
1135 struct workqueue_struct *workqueue;
1136
1137 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1138 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1139 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1140 spinlock_t queue_stop_reason_lock;
1141
1142 int open_count;
1143 int monitors, cooked_mntrs;
1144 /* number of interfaces with corresponding FIF_ flags */
1145 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1146 fif_probe_req;
1147 int probe_req_reg;
1148 unsigned int filter_flags; /* FIF_* */
1149
1150 bool wiphy_ciphers_allocated;
1151
1152 bool use_chanctx;
1153
1154 /* protects the aggregated multicast list and filter calls */
1155 spinlock_t filter_lock;
1156
1157 /* used for uploading changed mc list */
1158 struct work_struct reconfig_filter;
1159
1160 /* aggregated multicast list */
1161 struct netdev_hw_addr_list mc_list;
1162
1163 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1164
1165 /*
1166 * suspended is true if we finished all the suspend _and_ we have
1167 * not yet come up from resume. This is to be used by mac80211
1168 * to ensure driver sanity during suspend and mac80211's own
1169 * sanity. It can eventually be used for WoW as well.
1170 */
1171 bool suspended;
1172
1173 /*
1174 * Resuming is true while suspended, but when we're reprogramming the
1175 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1176 * again even though some other parts of the stack are still suspended
1177 * and we still drop received frames to avoid waking the stack.
1178 */
1179 bool resuming;
1180
1181 /*
1182 * quiescing is true during the suspend process _only_ to
1183 * ease timer cancelling etc.
1184 */
1185 bool quiescing;
1186
1187 /* device is started */
1188 bool started;
1189
1190 /* device is during a HW reconfig */
1191 bool in_reconfig;
1192
1193 /* wowlan is enabled -- don't reconfig on resume */
1194 bool wowlan;
1195
1196 struct work_struct radar_detected_work;
1197
1198 /* number of RX chains the hardware has */
1199 u8 rx_chains;
1200
1201 int tx_headroom; /* required headroom for hardware/radiotap */
1202
1203 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1204 * added to skb_queue will be processed, but frames in
1205 * skb_queue_unreliable may be dropped if the total length of these
1206 * queues increases over the limit. */
1207 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1208 struct tasklet_struct tasklet;
1209 struct sk_buff_head skb_queue;
1210 struct sk_buff_head skb_queue_unreliable;
1211
1212 spinlock_t rx_path_lock;
1213
1214 /* Station data */
1215 /*
1216 * The mutex only protects the list, hash table and
1217 * counter, reads are done with RCU.
1218 */
1219 struct mutex sta_mtx;
1220 spinlock_t tim_lock;
1221 unsigned long num_sta;
1222 struct list_head sta_list;
1223 struct rhltable sta_hash;
1224 struct timer_list sta_cleanup;
1225 int sta_generation;
1226
1227 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1228 struct tasklet_struct tx_pending_tasklet;
1229
1230 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1231
1232 /* number of interfaces with allmulti RX */
1233 atomic_t iff_allmultis;
1234
1235 struct rate_control_ref *rate_ctrl;
1236
1237 struct crypto_cipher *wep_tx_tfm;
1238 struct crypto_cipher *wep_rx_tfm;
1239 u32 wep_iv;
1240
1241 /* see iface.c */
1242 struct list_head interfaces;
1243 struct list_head mon_list; /* only that are IFF_UP && !cooked */
1244 struct mutex iflist_mtx;
1245
1246 /*
1247 * Key mutex, protects sdata's key_list and sta_info's
1248 * key pointers (write access, they're RCU.)
1249 */
1250 struct mutex key_mtx;
1251
1252 /* mutex for scan and work locking */
1253 struct mutex mtx;
1254
1255 /* Scanning and BSS list */
1256 unsigned long scanning;
1257 struct cfg80211_ssid scan_ssid;
1258 struct cfg80211_scan_request *int_scan_req;
1259 struct cfg80211_scan_request __rcu *scan_req;
1260 struct ieee80211_scan_request *hw_scan_req;
1261 struct cfg80211_chan_def scan_chandef;
1262 enum nl80211_band hw_scan_band;
1263 int scan_channel_idx;
1264 int scan_ies_len;
1265 int hw_scan_ies_bufsize;
1266 struct cfg80211_scan_info scan_info;
1267
1268 struct work_struct sched_scan_stopped_work;
1269 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1270 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1271 u8 scan_addr[ETH_ALEN];
1272
1273 unsigned long leave_oper_channel_time;
1274 enum mac80211_scan_state next_scan_state;
1275 struct delayed_work scan_work;
1276 struct ieee80211_sub_if_data __rcu *scan_sdata;
1277 /* For backward compatibility only -- do not use */
1278 struct cfg80211_chan_def _oper_chandef;
1279
1280 /* Temporary remain-on-channel for off-channel operations */
1281 struct ieee80211_channel *tmp_channel;
1282
1283 /* channel contexts */
1284 struct list_head chanctx_list;
1285 struct mutex chanctx_mtx;
1286
1287 #ifdef CONFIG_MAC80211_LEDS
1288 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1289 struct led_trigger tpt_led;
1290 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1291 atomic_t radio_led_active, tpt_led_active;
1292 struct tpt_led_trigger *tpt_led_trigger;
1293 #endif
1294
1295 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1296 /* SNMP counters */
1297 /* dot11CountersTable */
1298 u32 dot11TransmittedFragmentCount;
1299 u32 dot11MulticastTransmittedFrameCount;
1300 u32 dot11FailedCount;
1301 u32 dot11RetryCount;
1302 u32 dot11MultipleRetryCount;
1303 u32 dot11FrameDuplicateCount;
1304 u32 dot11ReceivedFragmentCount;
1305 u32 dot11MulticastReceivedFrameCount;
1306 u32 dot11TransmittedFrameCount;
1307
1308 /* TX/RX handler statistics */
1309 unsigned int tx_handlers_drop;
1310 unsigned int tx_handlers_queued;
1311 unsigned int tx_handlers_drop_wep;
1312 unsigned int tx_handlers_drop_not_assoc;
1313 unsigned int tx_handlers_drop_unauth_port;
1314 unsigned int rx_handlers_drop;
1315 unsigned int rx_handlers_queued;
1316 unsigned int rx_handlers_drop_nullfunc;
1317 unsigned int rx_handlers_drop_defrag;
1318 unsigned int tx_expand_skb_head;
1319 unsigned int tx_expand_skb_head_cloned;
1320 unsigned int rx_expand_skb_head_defrag;
1321 unsigned int rx_handlers_fragments;
1322 unsigned int tx_status_drop;
1323 #define I802_DEBUG_INC(c) (c)++
1324 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1325 #define I802_DEBUG_INC(c) do { } while (0)
1326 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1327
1328
1329 int total_ps_buffered; /* total number of all buffered unicast and
1330 * multicast packets for power saving stations
1331 */
1332
1333 bool pspolling;
1334 bool offchannel_ps_enabled;
1335 /*
1336 * PS can only be enabled when we have exactly one managed
1337 * interface (and monitors) in PS, this then points there.
1338 */
1339 struct ieee80211_sub_if_data *ps_sdata;
1340 struct work_struct dynamic_ps_enable_work;
1341 struct work_struct dynamic_ps_disable_work;
1342 struct timer_list dynamic_ps_timer;
1343 struct notifier_block ifa_notifier;
1344 struct notifier_block ifa6_notifier;
1345
1346 /*
1347 * The dynamic ps timeout configured from user space via WEXT -
1348 * this will override whatever chosen by mac80211 internally.
1349 */
1350 int dynamic_ps_forced_timeout;
1351
1352 int user_power_level; /* in dBm, for all interfaces */
1353
1354 enum ieee80211_smps_mode smps_mode;
1355
1356 struct work_struct restart_work;
1357
1358 #ifdef CONFIG_MAC80211_DEBUGFS
1359 struct local_debugfsdentries {
1360 struct dentry *rcdir;
1361 struct dentry *keys;
1362 } debugfs;
1363 #endif
1364
1365 /*
1366 * Remain-on-channel support
1367 */
1368 struct delayed_work roc_work;
1369 struct list_head roc_list;
1370 struct work_struct hw_roc_start, hw_roc_done;
1371 unsigned long hw_roc_start_time;
1372 u64 roc_cookie_counter;
1373
1374 struct idr ack_status_frames;
1375 spinlock_t ack_status_lock;
1376
1377 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1378
1379 /* virtual monitor interface */
1380 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1381 struct cfg80211_chan_def monitor_chandef;
1382
1383 /* extended capabilities provided by mac80211 */
1384 u8 ext_capa[8];
1385
1386 /* TDLS channel switch */
1387 struct work_struct tdls_chsw_work;
1388 struct sk_buff_head skb_queue_tdls_chsw;
1389 };
1390
1391 static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(struct net_device * dev)1392 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1393 {
1394 return netdev_priv(dev);
1395 }
1396
1397 static inline struct ieee80211_sub_if_data *
IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev * wdev)1398 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1399 {
1400 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1401 }
1402
1403 static inline struct ieee80211_supported_band *
ieee80211_get_sband(struct ieee80211_sub_if_data * sdata)1404 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1405 {
1406 struct ieee80211_local *local = sdata->local;
1407 struct ieee80211_chanctx_conf *chanctx_conf;
1408 enum nl80211_band band;
1409
1410 rcu_read_lock();
1411 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1412
1413 if (WARN_ON(!chanctx_conf)) {
1414 rcu_read_unlock();
1415 return NULL;
1416 }
1417
1418 band = chanctx_conf->def.chan->band;
1419 rcu_read_unlock();
1420
1421 return local->hw.wiphy->bands[band];
1422 }
1423
1424 /* this struct holds the value parsing from channel switch IE */
1425 struct ieee80211_csa_ie {
1426 struct cfg80211_chan_def chandef;
1427 u8 mode;
1428 u8 count;
1429 u8 ttl;
1430 u16 pre_value;
1431 u16 reason_code;
1432 };
1433
1434 /* Parsed Information Elements */
1435 struct ieee802_11_elems {
1436 const u8 *ie_start;
1437 size_t total_len;
1438
1439 /* pointers to IEs */
1440 const struct ieee80211_tdls_lnkie *lnk_id;
1441 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1442 const u8 *ext_capab;
1443 const u8 *ssid;
1444 const u8 *supp_rates;
1445 const u8 *ds_params;
1446 const struct ieee80211_tim_ie *tim;
1447 const u8 *challenge;
1448 const u8 *rsn;
1449 const u8 *erp_info;
1450 const u8 *ext_supp_rates;
1451 const u8 *wmm_info;
1452 const u8 *wmm_param;
1453 const struct ieee80211_ht_cap *ht_cap_elem;
1454 const struct ieee80211_ht_operation *ht_operation;
1455 const struct ieee80211_vht_cap *vht_cap_elem;
1456 const struct ieee80211_vht_operation *vht_operation;
1457 const struct ieee80211_meshconf_ie *mesh_config;
1458 const u8 *he_cap;
1459 const struct ieee80211_he_operation *he_operation;
1460 const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1461 const u8 *uora_element;
1462 const u8 *mesh_id;
1463 const u8 *peering;
1464 const __le16 *awake_window;
1465 const u8 *preq;
1466 const u8 *prep;
1467 const u8 *perr;
1468 const struct ieee80211_rann_ie *rann;
1469 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1470 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1471 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1472 const u8 *country_elem;
1473 const u8 *pwr_constr_elem;
1474 const u8 *cisco_dtpc_elem;
1475 const struct ieee80211_timeout_interval_ie *timeout_int;
1476 const u8 *opmode_notif;
1477 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1478 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1479 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1480
1481 /* length of them, respectively */
1482 u8 ext_capab_len;
1483 u8 ssid_len;
1484 u8 supp_rates_len;
1485 u8 tim_len;
1486 u8 challenge_len;
1487 u8 rsn_len;
1488 u8 ext_supp_rates_len;
1489 u8 wmm_info_len;
1490 u8 wmm_param_len;
1491 u8 he_cap_len;
1492 u8 mesh_id_len;
1493 u8 peering_len;
1494 u8 preq_len;
1495 u8 prep_len;
1496 u8 perr_len;
1497 u8 country_elem_len;
1498
1499 /* whether a parse error occurred while retrieving these elements */
1500 bool parse_error;
1501 };
1502
hw_to_local(struct ieee80211_hw * hw)1503 static inline struct ieee80211_local *hw_to_local(
1504 struct ieee80211_hw *hw)
1505 {
1506 return container_of(hw, struct ieee80211_local, hw);
1507 }
1508
to_txq_info(struct ieee80211_txq * txq)1509 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1510 {
1511 return container_of(txq, struct txq_info, txq);
1512 }
1513
txq_has_queue(struct ieee80211_txq * txq)1514 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1515 {
1516 struct txq_info *txqi = to_txq_info(txq);
1517
1518 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1519 }
1520
ieee80211_bssid_match(const u8 * raddr,const u8 * addr)1521 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1522 {
1523 return ether_addr_equal(raddr, addr) ||
1524 is_broadcast_ether_addr(raddr);
1525 }
1526
1527 static inline bool
ieee80211_have_rx_timestamp(struct ieee80211_rx_status * status)1528 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1529 {
1530 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1531 status->flag & RX_FLAG_MACTIME_END);
1532 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END))
1533 return true;
1534 /* can't handle non-legacy preamble yet */
1535 if (status->flag & RX_FLAG_MACTIME_PLCP_START &&
1536 status->encoding == RX_ENC_LEGACY)
1537 return true;
1538 return false;
1539 }
1540
1541 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1542 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1543
1544 /* This function returns the number of multicast stations connected to this
1545 * interface. It returns -1 if that number is not tracked, that is for netdevs
1546 * not in AP or AP_VLAN mode or when using 4addr.
1547 */
1548 static inline int
ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data * sdata)1549 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1550 {
1551 if (sdata->vif.type == NL80211_IFTYPE_AP)
1552 return atomic_read(&sdata->u.ap.num_mcast_sta);
1553 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1554 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1555 return -1;
1556 }
1557
1558 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1559 struct ieee80211_rx_status *status,
1560 unsigned int mpdu_len,
1561 unsigned int mpdu_offset);
1562 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1563 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1564 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1565 u32 changed);
1566 void ieee80211_configure_filter(struct ieee80211_local *local);
1567 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1568
1569 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1570 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1571 u64 *cookie, gfp_t gfp);
1572
1573 void ieee80211_check_fast_rx(struct sta_info *sta);
1574 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1575 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1576 void ieee80211_clear_fast_rx(struct sta_info *sta);
1577
1578 /* STA code */
1579 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1580 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1581 struct cfg80211_auth_request *req);
1582 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1583 struct cfg80211_assoc_request *req);
1584 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1585 struct cfg80211_deauth_request *req);
1586 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1587 struct cfg80211_disassoc_request *req);
1588 void ieee80211_send_pspoll(struct ieee80211_local *local,
1589 struct ieee80211_sub_if_data *sdata);
1590 void ieee80211_recalc_ps(struct ieee80211_local *local);
1591 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1592 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1593 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1594 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1595 struct sk_buff *skb);
1596 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1597 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1598 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1599 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1600 __le16 fc, bool acked);
1601 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1602 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1603 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1604
1605 /* IBSS code */
1606 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1607 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1608 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1609 const u8 *bssid, const u8 *addr, u32 supp_rates);
1610 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1611 struct cfg80211_ibss_params *params);
1612 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1613 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1614 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1615 struct sk_buff *skb);
1616 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1617 struct cfg80211_csa_settings *csa_settings);
1618 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1619 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1620
1621 /* OCB code */
1622 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1623 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1624 const u8 *bssid, const u8 *addr, u32 supp_rates);
1625 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1626 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1627 struct ocb_setup *setup);
1628 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1629
1630 /* mesh code */
1631 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1632 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1633 struct sk_buff *skb);
1634 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1635 struct cfg80211_csa_settings *csa_settings);
1636 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1637
1638 /* scan/BSS handling */
1639 void ieee80211_scan_work(struct work_struct *work);
1640 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1641 const u8 *ssid, u8 ssid_len,
1642 struct ieee80211_channel **channels,
1643 unsigned int n_channels,
1644 enum nl80211_bss_scan_width scan_width);
1645 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1646 struct cfg80211_scan_request *req);
1647 void ieee80211_scan_cancel(struct ieee80211_local *local);
1648 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1649 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1650
1651 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1652 struct ieee80211_bss *
1653 ieee80211_bss_info_update(struct ieee80211_local *local,
1654 struct ieee80211_rx_status *rx_status,
1655 struct ieee80211_mgmt *mgmt,
1656 size_t len,
1657 struct ieee802_11_elems *elems,
1658 struct ieee80211_channel *channel);
1659 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1660 struct ieee80211_bss *bss);
1661
1662 /* scheduled scan handling */
1663 int
1664 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1665 struct cfg80211_sched_scan_request *req);
1666 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1667 struct cfg80211_sched_scan_request *req);
1668 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1669 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1670 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1671
1672 /* off-channel/mgmt-tx */
1673 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1674 void ieee80211_offchannel_return(struct ieee80211_local *local);
1675 void ieee80211_roc_setup(struct ieee80211_local *local);
1676 void ieee80211_start_next_roc(struct ieee80211_local *local);
1677 void ieee80211_roc_purge(struct ieee80211_local *local,
1678 struct ieee80211_sub_if_data *sdata);
1679 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1680 struct ieee80211_channel *chan,
1681 unsigned int duration, u64 *cookie);
1682 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1683 struct wireless_dev *wdev, u64 cookie);
1684 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1685 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1686 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1687 struct wireless_dev *wdev, u64 cookie);
1688
1689 /* channel switch handling */
1690 void ieee80211_csa_finalize_work(struct work_struct *work);
1691 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1692 struct cfg80211_csa_settings *params);
1693
1694 /* interface handling */
1695 int ieee80211_iface_init(void);
1696 void ieee80211_iface_exit(void);
1697 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1698 unsigned char name_assign_type,
1699 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1700 struct vif_params *params);
1701 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1702 enum nl80211_iftype type);
1703 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1704 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1705 u32 ieee80211_idle_off(struct ieee80211_local *local);
1706 void ieee80211_recalc_idle(struct ieee80211_local *local);
1707 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1708 const int offset);
1709 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1710 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1711 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1712 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1713
1714 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1715 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1716 bool update_bss);
1717
ieee80211_sdata_running(struct ieee80211_sub_if_data * sdata)1718 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1719 {
1720 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1721 }
1722
1723 /* tx handling */
1724 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1725 void ieee80211_tx_pending(unsigned long data);
1726 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1727 struct net_device *dev);
1728 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1729 struct net_device *dev);
1730 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1731 struct net_device *dev,
1732 u32 info_flags);
1733 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1734 struct sk_buff_head *skbs);
1735 struct sk_buff *
1736 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1737 struct sk_buff *skb, u32 info_flags);
1738 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1739 struct ieee80211_supported_band *sband,
1740 int retry_count, int shift, bool send_to_cooked);
1741
1742 void ieee80211_check_fast_xmit(struct sta_info *sta);
1743 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1744 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1745 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1746 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
1747 const u8 *buf, size_t len,
1748 const u8 *dest, __be16 proto, bool unencrypted);
1749
1750 /* HT */
1751 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1752 struct ieee80211_sta_ht_cap *ht_cap);
1753 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1754 struct ieee80211_supported_band *sband,
1755 const struct ieee80211_ht_cap *ht_cap_ie,
1756 struct sta_info *sta);
1757 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1758 const u8 *da, u16 tid,
1759 u16 initiator, u16 reason_code);
1760 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1761 enum ieee80211_smps_mode smps, const u8 *da,
1762 const u8 *bssid);
1763 void ieee80211_request_smps_ap_work(struct work_struct *work);
1764 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1765 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1766 enum ieee80211_smps_mode smps_mode_new);
1767
1768 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1769 u16 initiator, u16 reason, bool stop);
1770 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1771 u16 initiator, u16 reason, bool stop);
1772 void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
1773 u8 dialog_token, u16 timeout,
1774 u16 start_seq_num, u16 ba_policy, u16 tid,
1775 u16 buf_size, bool tx, bool auto_seq);
1776 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1777 enum ieee80211_agg_stop_reason reason);
1778 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1779 struct sta_info *sta,
1780 struct ieee80211_mgmt *mgmt, size_t len);
1781 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1782 struct sta_info *sta,
1783 struct ieee80211_mgmt *mgmt,
1784 size_t len);
1785 void ieee80211_process_addba_request(struct ieee80211_local *local,
1786 struct sta_info *sta,
1787 struct ieee80211_mgmt *mgmt,
1788 size_t len);
1789
1790 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1791 enum ieee80211_agg_stop_reason reason);
1792 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1793 enum ieee80211_agg_stop_reason reason);
1794 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
1795 struct tid_ampdu_tx *tid_tx);
1796 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
1797 struct tid_ampdu_tx *tid_tx);
1798 void ieee80211_ba_session_work(struct work_struct *work);
1799 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1800 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1801
1802 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1803 enum nl80211_smps_mode
1804 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
1805
1806 /* VHT */
1807 void
1808 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1809 struct ieee80211_supported_band *sband,
1810 const struct ieee80211_vht_cap *vht_cap_ie,
1811 struct sta_info *sta);
1812 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1813 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1814 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1815 enum ieee80211_sta_rx_bandwidth
1816 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
1817 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
1818 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1819 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
1820 struct ieee80211_mgmt *mgmt);
1821 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1822 struct sta_info *sta, u8 opmode,
1823 enum nl80211_band band);
1824 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1825 struct sta_info *sta, u8 opmode,
1826 enum nl80211_band band);
1827 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1828 struct ieee80211_sta_vht_cap *vht_cap);
1829 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
1830 u16 vht_mask[NL80211_VHT_NSS_MAX]);
1831 enum nl80211_chan_width
1832 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta);
1833
1834 /* HE */
1835 void
1836 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
1837 struct ieee80211_supported_band *sband,
1838 const u8 *he_cap_ie, u8 he_cap_len,
1839 struct sta_info *sta);
1840
1841 /* Spectrum management */
1842 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1843 struct ieee80211_mgmt *mgmt,
1844 size_t len);
1845 /**
1846 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1847 * @sdata: the sdata of the interface which has received the frame
1848 * @elems: parsed 802.11 elements received with the frame
1849 * @current_band: indicates the current band
1850 * @sta_flags: contains information about own capabilities and restrictions
1851 * to decide which channel switch announcements can be accepted. Only the
1852 * following subset of &enum ieee80211_sta_flags are evaluated:
1853 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1854 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1855 * %IEEE80211_STA_DISABLE_160MHZ.
1856 * @bssid: the currently connected bssid (for reporting)
1857 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1858 All of them will be filled with if success only.
1859 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1860 */
1861 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1862 struct ieee802_11_elems *elems,
1863 enum nl80211_band current_band,
1864 u32 sta_flags, u8 *bssid,
1865 struct ieee80211_csa_ie *csa_ie);
1866
1867 /* Suspend/resume and hw reconfiguration */
1868 int ieee80211_reconfig(struct ieee80211_local *local);
1869 void ieee80211_stop_device(struct ieee80211_local *local);
1870
1871 int __ieee80211_suspend(struct ieee80211_hw *hw,
1872 struct cfg80211_wowlan *wowlan);
1873
__ieee80211_resume(struct ieee80211_hw * hw)1874 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1875 {
1876 struct ieee80211_local *local = hw_to_local(hw);
1877
1878 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
1879 !test_bit(SCAN_COMPLETED, &local->scanning),
1880 "%s: resume with hardware scan still in progress\n",
1881 wiphy_name(hw->wiphy));
1882
1883 return ieee80211_reconfig(hw_to_local(hw));
1884 }
1885
1886 /* utility functions/constants */
1887 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1888 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
1889 int rate, int erp, int short_preamble,
1890 int shift);
1891 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1892 struct ieee80211_tx_queue_params *qparam,
1893 int ac);
1894 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1895 bool bss_notify, bool enable_qos);
1896 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
1897 struct sta_info *sta, struct sk_buff *skb,
1898 u32 txdata_flags);
1899
1900 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1901 struct sk_buff *skb, int tid,
1902 enum nl80211_band band, u32 txdata_flags);
1903
1904 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)1905 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1906 struct sk_buff *skb, int tid,
1907 enum nl80211_band band, u32 txdata_flags)
1908 {
1909 rcu_read_lock();
1910 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band, txdata_flags);
1911 rcu_read_unlock();
1912 }
1913
ieee80211_tx_skb_tid(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid)1914 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1915 struct sk_buff *skb, int tid)
1916 {
1917 struct ieee80211_chanctx_conf *chanctx_conf;
1918
1919 rcu_read_lock();
1920 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1921 if (WARN_ON(!chanctx_conf)) {
1922 rcu_read_unlock();
1923 kfree_skb(skb);
1924 return;
1925 }
1926
1927 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1928 chanctx_conf->def.chan->band, 0);
1929 rcu_read_unlock();
1930 }
1931
ieee80211_tx_skb(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb)1932 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1933 struct sk_buff *skb)
1934 {
1935 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1936 ieee80211_tx_skb_tid(sdata, skb, 7);
1937 }
1938
1939 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1940 struct ieee802_11_elems *elems,
1941 u64 filter, u32 crc);
ieee802_11_parse_elems(const u8 * start,size_t len,bool action,struct ieee802_11_elems * elems)1942 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1943 bool action,
1944 struct ieee802_11_elems *elems)
1945 {
1946 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1947 }
1948
1949
1950 extern const int ieee802_1d_to_ac[8];
1951
ieee80211_ac_from_tid(int tid)1952 static inline int ieee80211_ac_from_tid(int tid)
1953 {
1954 return ieee802_1d_to_ac[tid & 7];
1955 }
1956
1957 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1958 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1959 void ieee80211_dynamic_ps_timer(struct timer_list *t);
1960 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1961 struct ieee80211_sub_if_data *sdata,
1962 bool powersave);
1963 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1964 struct ieee80211_hdr *hdr);
1965 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1966 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
1967
1968 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1969 unsigned long queues,
1970 enum queue_stop_reason reason,
1971 bool refcounted);
1972 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1973 struct ieee80211_sub_if_data *sdata,
1974 enum queue_stop_reason reason);
1975 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1976 struct ieee80211_sub_if_data *sdata,
1977 enum queue_stop_reason reason);
1978 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1979 unsigned long queues,
1980 enum queue_stop_reason reason,
1981 bool refcounted);
1982 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1983 enum queue_stop_reason reason,
1984 bool refcounted);
1985 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1986 enum queue_stop_reason reason,
1987 bool refcounted);
1988 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1989 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1990 struct sk_buff *skb);
1991 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1992 struct sk_buff_head *skbs);
1993 void ieee80211_flush_queues(struct ieee80211_local *local,
1994 struct ieee80211_sub_if_data *sdata, bool drop);
1995 void __ieee80211_flush_queues(struct ieee80211_local *local,
1996 struct ieee80211_sub_if_data *sdata,
1997 unsigned int queues, bool drop);
1998
ieee80211_can_run_worker(struct ieee80211_local * local)1999 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2000 {
2001 /*
2002 * If quiescing is set, we are racing with __ieee80211_suspend.
2003 * __ieee80211_suspend flushes the workers after setting quiescing,
2004 * and we check quiescing / suspended before enqueing new workers.
2005 * We should abort the worker to avoid the races below.
2006 */
2007 if (local->quiescing)
2008 return false;
2009
2010 /*
2011 * We might already be suspended if the following scenario occurs:
2012 * __ieee80211_suspend Control path
2013 *
2014 * if (local->quiescing)
2015 * return;
2016 * local->quiescing = true;
2017 * flush_workqueue();
2018 * queue_work(...);
2019 * local->suspended = true;
2020 * local->quiescing = false;
2021 * worker starts running...
2022 */
2023 if (local->suspended)
2024 return false;
2025
2026 return true;
2027 }
2028
2029 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2030 void ieee80211_txq_set_params(struct ieee80211_local *local);
2031 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2032 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2033 struct sta_info *sta,
2034 struct txq_info *txq, int tid);
2035 void ieee80211_txq_purge(struct ieee80211_local *local,
2036 struct txq_info *txqi);
2037 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2038 struct ieee80211_sub_if_data *sdata);
2039 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2040 struct txq_info *txqi);
2041 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2042 u16 transaction, u16 auth_alg, u16 status,
2043 const u8 *extra, size_t extra_len, const u8 *bssid,
2044 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2045 u32 tx_flags);
2046 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2047 const u8 *bssid, u16 stype, u16 reason,
2048 bool send_frame, u8 *frame_buf);
2049
2050 enum {
2051 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
2052 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
2053 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
2054 };
2055
2056 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
2057 size_t buffer_len,
2058 struct ieee80211_scan_ies *ie_desc,
2059 const u8 *ie, size_t ie_len,
2060 u8 bands_used, u32 *rate_masks,
2061 struct cfg80211_chan_def *chandef,
2062 u32 flags);
2063 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2064 const u8 *src, const u8 *dst,
2065 u32 ratemask,
2066 struct ieee80211_channel *chan,
2067 const u8 *ssid, size_t ssid_len,
2068 const u8 *ie, size_t ie_len,
2069 u32 flags);
2070 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2071 struct ieee802_11_elems *elems,
2072 enum nl80211_band band, u32 *basic_rates);
2073 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2074 enum ieee80211_smps_mode smps_mode);
2075 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2076 enum ieee80211_smps_mode smps_mode);
2077 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
2078 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
2079
2080 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2081 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2082 u16 cap);
2083 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2084 const struct cfg80211_chan_def *chandef,
2085 u16 prot_mode, bool rifs_mode);
2086 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2087 const struct cfg80211_chan_def *chandef);
2088 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2089 u32 cap);
2090 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2091 const struct cfg80211_chan_def *chandef);
2092 u8 *ieee80211_ie_build_he_cap(u8 *pos,
2093 const struct ieee80211_sta_he_cap *he_cap,
2094 u8 *end);
2095 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2096 const struct ieee80211_supported_band *sband,
2097 const u8 *srates, int srates_len, u32 *rates);
2098 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2099 struct sk_buff *skb, bool need_basic,
2100 enum nl80211_band band);
2101 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2102 struct sk_buff *skb, bool need_basic,
2103 enum nl80211_band band);
2104 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2105
2106 /* channel management */
2107 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2108 struct cfg80211_chan_def *chandef);
2109 bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper,
2110 struct cfg80211_chan_def *chandef);
2111 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2112
2113 int __must_check
2114 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
2115 const struct cfg80211_chan_def *chandef,
2116 enum ieee80211_chanctx_mode mode);
2117 int __must_check
2118 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
2119 const struct cfg80211_chan_def *chandef,
2120 enum ieee80211_chanctx_mode mode,
2121 bool radar_required);
2122 int __must_check
2123 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2124 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2125
2126 int __must_check
2127 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2128 const struct cfg80211_chan_def *chandef,
2129 u32 *changed);
2130 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2131 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2132 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2133 bool clear);
2134 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2135 struct ieee80211_chanctx *ctx);
2136
2137 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2138 struct ieee80211_chanctx *chanctx);
2139 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2140 struct ieee80211_chanctx *ctx);
2141 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2142
2143 void ieee80211_dfs_cac_timer(unsigned long data);
2144 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2145 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2146 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2147 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2148 struct cfg80211_csa_settings *csa_settings);
2149
2150 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2151 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2152 const struct ieee80211_cipher_scheme *
2153 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2154 enum nl80211_iftype iftype);
2155 int ieee80211_cs_headroom(struct ieee80211_local *local,
2156 struct cfg80211_crypto_settings *crypto,
2157 enum nl80211_iftype iftype);
2158 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2159 struct ieee80211_sub_if_data *sdata);
2160 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2161 const struct cfg80211_chan_def *chandef,
2162 enum ieee80211_chanctx_mode chanmode,
2163 u8 radar_detect);
2164 int ieee80211_max_num_channels(struct ieee80211_local *local);
2165 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta);
2166 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2167 struct ieee80211_chanctx *ctx);
2168
2169 /* TDLS */
2170 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2171 const u8 *peer, u8 action_code, u8 dialog_token,
2172 u16 status_code, u32 peer_capability,
2173 bool initiator, const u8 *extra_ies,
2174 size_t extra_ies_len);
2175 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2176 const u8 *peer, enum nl80211_tdls_operation oper);
2177 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2178 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2179 const u8 *addr, u8 oper_class,
2180 struct cfg80211_chan_def *chandef);
2181 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2182 struct net_device *dev,
2183 const u8 *addr);
2184 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2185 void ieee80211_tdls_chsw_work(struct work_struct *wk);
2186
2187 extern const struct ethtool_ops ieee80211_ethtool_ops;
2188
2189 #ifdef CONFIG_MAC80211_NOINLINE
2190 #define debug_noinline noinline
2191 #else
2192 #define debug_noinline
2193 #endif
2194
2195 #endif /* IEEE80211_I_H */
2196
