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 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13 #ifndef IEEE80211_I_H
14 #define IEEE80211_I_H
15
16 #include <linux/kernel.h>
17 #include <linux/device.h>
18 #include <linux/if_ether.h>
19 #include <linux/interrupt.h>
20 #include <linux/list.h>
21 #include <linux/netdevice.h>
22 #include <linux/skbuff.h>
23 #include <linux/workqueue.h>
24 #include <linux/types.h>
25 #include <linux/spinlock.h>
26 #include <linux/etherdevice.h>
27 #include <linux/leds.h>
28 #include <linux/idr.h>
29 #include <linux/rhashtable.h>
30 #include <net/ieee80211_radiotap.h>
31 #include <net/cfg80211.h>
32 #include <net/mac80211.h>
33 #include <net/fq.h>
34 #include "key.h"
35 #include "sta_info.h"
36 #include "debug.h"
37
38 extern const struct cfg80211_ops mac80211_config_ops;
39
40 struct ieee80211_local;
41
42 /* Maximum number of broadcast/multicast frames to buffer when some of the
43 * associated stations are using power saving. */
44 #define AP_MAX_BC_BUFFER 128
45
46 /* Maximum number of frames buffered to all STAs, including multicast frames.
47 * Note: increasing this limit increases the potential memory requirement. Each
48 * frame can be up to about 2 kB long. */
49 #define TOTAL_MAX_TX_BUFFER 512
50
51 /* Required encryption head and tailroom */
52 #define IEEE80211_ENCRYPT_HEADROOM 8
53 #define IEEE80211_ENCRYPT_TAILROOM 18
54
55 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
56 * reception of at least three fragmented frames. This limit can be increased
57 * by changing this define, at the cost of slower frame reassembly and
58 * increased memory use (about 2 kB of RAM per entry). */
59 #define IEEE80211_FRAGMENT_MAX 4
60
61 /* power level hasn't been configured (or set to automatic) */
62 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
63
64 /*
65 * Some APs experience problems when working with U-APSD. Decreasing the
66 * probability of that happening by using legacy mode for all ACs but VO isn't
67 * enough.
68 *
69 * Cisco 4410N originally forced us to enable VO by default only because it
70 * treated non-VO ACs as legacy.
71 *
72 * However some APs (notably Netgear R7000) silently reclassify packets to
73 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
74 * clients would never see some frames (e.g. ARP responses) or would fetch them
75 * accidentally after a long time.
76 *
77 * It makes little sense to enable u-APSD queues by default because it needs
78 * userspace applications to be aware of it to actually take advantage of the
79 * possible additional powersavings. Implicitly depending on driver autotrigger
80 * frame support doesn't make much sense.
81 */
82 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
83
84 #define IEEE80211_DEFAULT_MAX_SP_LEN \
85 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
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_UNICAST BIT(1)
166 #define IEEE80211_TX_PS_BUFFERED BIT(2)
167
168 struct ieee80211_tx_data {
169 struct sk_buff *skb;
170 struct sk_buff_head skbs;
171 struct ieee80211_local *local;
172 struct ieee80211_sub_if_data *sdata;
173 struct sta_info *sta;
174 struct ieee80211_key *key;
175 struct ieee80211_tx_rate rate;
176
177 unsigned int flags;
178 };
179
180
181 typedef unsigned __bitwise__ ieee80211_rx_result;
182 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
183 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
184 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
185 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
186
187 /**
188 * enum ieee80211_packet_rx_flags - packet RX flags
189 * @IEEE80211_RX_AMSDU: a-MSDU packet
190 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
191 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
192 *
193 * These are per-frame flags that are attached to a frame in the
194 * @rx_flags field of &struct ieee80211_rx_status.
195 */
196 enum ieee80211_packet_rx_flags {
197 IEEE80211_RX_AMSDU = BIT(3),
198 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
199 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
200 };
201
202 /**
203 * enum ieee80211_rx_flags - RX data flags
204 *
205 * @IEEE80211_RX_CMNTR: received on cooked monitor already
206 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
207 * to cfg80211_report_obss_beacon().
208 *
209 * These flags are used across handling multiple interfaces
210 * for a single frame.
211 */
212 enum ieee80211_rx_flags {
213 IEEE80211_RX_CMNTR = BIT(0),
214 IEEE80211_RX_BEACON_REPORTED = BIT(1),
215 };
216
217 struct ieee80211_rx_data {
218 struct napi_struct *napi;
219 struct sk_buff *skb;
220 struct ieee80211_local *local;
221 struct ieee80211_sub_if_data *sdata;
222 struct sta_info *sta;
223 struct ieee80211_key *key;
224
225 unsigned int flags;
226
227 /*
228 * Index into sequence numbers array, 0..16
229 * since the last (16) is used for non-QoS,
230 * will be 16 on non-QoS frames.
231 */
232 int seqno_idx;
233
234 /*
235 * Index into the security IV/PN arrays, 0..16
236 * since the last (16) is used for CCMP-encrypted
237 * management frames, will be set to 16 on mgmt
238 * frames and 0 on non-QoS frames.
239 */
240 int security_idx;
241
242 u32 tkip_iv32;
243 u16 tkip_iv16;
244 };
245
246 struct ieee80211_csa_settings {
247 const u16 *counter_offsets_beacon;
248 const u16 *counter_offsets_presp;
249
250 int n_counter_offsets_beacon;
251 int n_counter_offsets_presp;
252
253 u8 count;
254 };
255
256 struct beacon_data {
257 u8 *head, *tail;
258 int head_len, tail_len;
259 struct ieee80211_meshconf_ie *meshconf;
260 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
261 u8 csa_current_counter;
262 struct rcu_head rcu_head;
263 };
264
265 struct probe_resp {
266 struct rcu_head rcu_head;
267 int len;
268 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
269 u8 data[0];
270 };
271
272 struct ps_data {
273 /* yes, this looks ugly, but guarantees that we can later use
274 * bitmap_empty :)
275 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
276 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
277 __aligned(__alignof__(unsigned long));
278 struct sk_buff_head bc_buf;
279 atomic_t num_sta_ps; /* number of stations in PS mode */
280 int dtim_count;
281 bool dtim_bc_mc;
282 };
283
284 struct ieee80211_if_ap {
285 struct beacon_data __rcu *beacon;
286 struct probe_resp __rcu *probe_resp;
287
288 /* to be used after channel switch. */
289 struct cfg80211_beacon_data *next_beacon;
290 struct list_head vlans; /* write-protected with RTNL and local->mtx */
291
292 struct ps_data ps;
293 atomic_t num_mcast_sta; /* number of stations receiving multicast */
294 enum ieee80211_smps_mode req_smps, /* requested smps mode */
295 driver_smps_mode; /* smps mode request */
296
297 struct work_struct request_smps_work;
298 };
299
300 struct ieee80211_if_wds {
301 struct sta_info *sta;
302 u8 remote_addr[ETH_ALEN];
303 };
304
305 struct ieee80211_if_vlan {
306 struct list_head list; /* write-protected with RTNL and local->mtx */
307
308 /* used for all tx if the VLAN is configured to 4-addr mode */
309 struct sta_info __rcu *sta;
310 };
311
312 struct mesh_stats {
313 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
314 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
315 __u32 fwded_frames; /* Mesh total forwarded frames */
316 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
317 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
318 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
319 };
320
321 #define PREQ_Q_F_START 0x1
322 #define PREQ_Q_F_REFRESH 0x2
323 struct mesh_preq_queue {
324 struct list_head list;
325 u8 dst[ETH_ALEN];
326 u8 flags;
327 };
328
329 struct ieee80211_roc_work {
330 struct list_head list;
331
332 struct ieee80211_sub_if_data *sdata;
333
334 struct ieee80211_channel *chan;
335
336 bool started, abort, hw_begun, notified;
337 bool on_channel;
338
339 unsigned long start_time;
340
341 u32 duration, req_duration;
342 struct sk_buff *frame;
343 u64 cookie, mgmt_tx_cookie;
344 enum ieee80211_roc_type type;
345 };
346
347 /* flags used in struct ieee80211_if_managed.flags */
348 enum ieee80211_sta_flags {
349 IEEE80211_STA_CONNECTION_POLL = BIT(1),
350 IEEE80211_STA_CONTROL_PORT = BIT(2),
351 IEEE80211_STA_DISABLE_HT = BIT(4),
352 IEEE80211_STA_MFP_ENABLED = BIT(6),
353 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
354 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
355 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
356 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
357 IEEE80211_STA_DISABLE_VHT = BIT(11),
358 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
359 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
360 IEEE80211_STA_DISABLE_WMM = BIT(14),
361 IEEE80211_STA_ENABLE_RRM = BIT(15),
362 };
363
364 struct ieee80211_mgd_auth_data {
365 struct cfg80211_bss *bss;
366 unsigned long timeout;
367 int tries;
368 u16 algorithm, expected_transaction;
369
370 u8 key[WLAN_KEY_LEN_WEP104];
371 u8 key_len, key_idx;
372 bool done;
373 bool timeout_started;
374
375 u16 sae_trans, sae_status;
376 size_t data_len;
377 u8 data[];
378 };
379
380 struct ieee80211_mgd_assoc_data {
381 struct cfg80211_bss *bss;
382 const u8 *supp_rates;
383
384 unsigned long timeout;
385 int tries;
386
387 u16 capability;
388 u8 prev_bssid[ETH_ALEN];
389 u8 ssid[IEEE80211_MAX_SSID_LEN];
390 u8 ssid_len;
391 u8 supp_rates_len;
392 bool wmm, uapsd;
393 bool need_beacon;
394 bool synced;
395 bool timeout_started;
396
397 u8 ap_ht_param;
398
399 struct ieee80211_vht_cap ap_vht_cap;
400
401 size_t ie_len;
402 u8 ie[];
403 };
404
405 struct ieee80211_sta_tx_tspec {
406 /* timestamp of the first packet in the time slice */
407 unsigned long time_slice_start;
408
409 u32 admitted_time; /* in usecs, unlike over the air */
410 u8 tsid;
411 s8 up; /* signed to be able to invalidate with -1 during teardown */
412
413 /* consumed TX time in microseconds in the time slice */
414 u32 consumed_tx_time;
415 enum {
416 TX_TSPEC_ACTION_NONE = 0,
417 TX_TSPEC_ACTION_DOWNGRADE,
418 TX_TSPEC_ACTION_STOP_DOWNGRADE,
419 } action;
420 bool downgraded;
421 };
422
423 DECLARE_EWMA(beacon_signal, 16, 4)
424
425 struct ieee80211_if_managed {
426 struct timer_list timer;
427 struct timer_list conn_mon_timer;
428 struct timer_list bcn_mon_timer;
429 struct timer_list chswitch_timer;
430 struct work_struct monitor_work;
431 struct work_struct chswitch_work;
432 struct work_struct beacon_connection_loss_work;
433 struct work_struct csa_connection_drop_work;
434
435 unsigned long beacon_timeout;
436 unsigned long probe_timeout;
437 int probe_send_count;
438 bool nullfunc_failed;
439 bool connection_loss;
440
441 struct cfg80211_bss *associated;
442 struct ieee80211_mgd_auth_data *auth_data;
443 struct ieee80211_mgd_assoc_data *assoc_data;
444
445 u8 bssid[ETH_ALEN];
446
447 u16 aid;
448
449 bool powersave; /* powersave requested for this iface */
450 bool broken_ap; /* AP is broken -- turn off powersave */
451 bool have_beacon;
452 u8 dtim_period;
453 enum ieee80211_smps_mode req_smps, /* requested smps mode */
454 driver_smps_mode; /* smps mode request */
455
456 struct work_struct request_smps_work;
457
458 unsigned int flags;
459
460 bool csa_waiting_bcn;
461 bool csa_ignored_same_chan;
462
463 bool beacon_crc_valid;
464 u32 beacon_crc;
465
466 bool status_acked;
467 bool status_received;
468 __le16 status_fc;
469
470 enum {
471 IEEE80211_MFP_DISABLED,
472 IEEE80211_MFP_OPTIONAL,
473 IEEE80211_MFP_REQUIRED
474 } mfp; /* management frame protection */
475
476 /*
477 * Bitmask of enabled u-apsd queues,
478 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
479 * to take effect.
480 */
481 unsigned int uapsd_queues;
482
483 /*
484 * Maximum number of buffered frames AP can deliver during a
485 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
486 * Needs a new association to take effect.
487 */
488 unsigned int uapsd_max_sp_len;
489
490 int wmm_last_param_set;
491
492 u8 use_4addr;
493
494 s16 p2p_noa_index;
495
496 struct ewma_beacon_signal ave_beacon_signal;
497
498 /*
499 * Number of Beacon frames used in ave_beacon_signal. This can be used
500 * to avoid generating less reliable cqm events that would be based
501 * only on couple of received frames.
502 */
503 unsigned int count_beacon_signal;
504
505 /* Number of times beacon loss was invoked. */
506 unsigned int beacon_loss_count;
507
508 /*
509 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
510 * that triggered a cqm event. 0 indicates that no event has been
511 * generated for the current association.
512 */
513 int last_cqm_event_signal;
514
515 /*
516 * State variables for keeping track of RSSI of the AP currently
517 * connected to and informing driver when RSSI has gone
518 * below/above a certain threshold.
519 */
520 int rssi_min_thold, rssi_max_thold;
521 int last_ave_beacon_signal;
522
523 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
524 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
525 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
526 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
527
528 /* TDLS support */
529 u8 tdls_peer[ETH_ALEN] __aligned(2);
530 struct delayed_work tdls_peer_del_work;
531 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
532 struct sk_buff *teardown_skb; /* A copy to send through the AP */
533 spinlock_t teardown_lock; /* To lock changing teardown_skb */
534 bool tdls_chan_switch_prohibited;
535 bool tdls_wider_bw_prohibited;
536
537 /* WMM-AC TSPEC support */
538 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
539 /* Use a separate work struct so that we can do something here
540 * while the sdata->work is flushing the queues, for example.
541 * otherwise, in scenarios where we hardly get any traffic out
542 * on the BE queue, but there's a lot of VO traffic, we might
543 * get stuck in a downgraded situation and flush takes forever.
544 */
545 struct delayed_work tx_tspec_wk;
546 };
547
548 struct ieee80211_if_ibss {
549 struct timer_list timer;
550 struct work_struct csa_connection_drop_work;
551
552 unsigned long last_scan_completed;
553
554 u32 basic_rates;
555
556 bool fixed_bssid;
557 bool fixed_channel;
558 bool privacy;
559
560 bool control_port;
561 bool userspace_handles_dfs;
562
563 u8 bssid[ETH_ALEN] __aligned(2);
564 u8 ssid[IEEE80211_MAX_SSID_LEN];
565 u8 ssid_len, ie_len;
566 u8 *ie;
567 struct cfg80211_chan_def chandef;
568
569 unsigned long ibss_join_req;
570 /* probe response/beacon for IBSS */
571 struct beacon_data __rcu *presp;
572
573 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
574 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
575
576 spinlock_t incomplete_lock;
577 struct list_head incomplete_stations;
578
579 enum {
580 IEEE80211_IBSS_MLME_SEARCH,
581 IEEE80211_IBSS_MLME_JOINED,
582 } state;
583 };
584
585 /**
586 * struct ieee80211_if_ocb - OCB mode state
587 *
588 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
589 * @wrkq_flags: OCB deferred task action
590 * @incomplete_lock: delayed STA insertion lock
591 * @incomplete_stations: list of STAs waiting for delayed insertion
592 * @joined: indication if the interface is connected to an OCB network
593 */
594 struct ieee80211_if_ocb {
595 struct timer_list housekeeping_timer;
596 unsigned long wrkq_flags;
597
598 spinlock_t incomplete_lock;
599 struct list_head incomplete_stations;
600
601 bool joined;
602 };
603
604 /**
605 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
606 *
607 * these declarations define the interface, which enables
608 * vendor-specific mesh synchronization
609 *
610 */
611 struct ieee802_11_elems;
612 struct ieee80211_mesh_sync_ops {
613 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
614 u16 stype,
615 struct ieee80211_mgmt *mgmt,
616 struct ieee802_11_elems *elems,
617 struct ieee80211_rx_status *rx_status);
618
619 /* should be called with beacon_data under RCU read lock */
620 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata,
621 struct beacon_data *beacon);
622 /* add other framework functions here */
623 };
624
625 struct mesh_csa_settings {
626 struct rcu_head rcu_head;
627 struct cfg80211_csa_settings settings;
628 };
629
630 struct ieee80211_if_mesh {
631 struct timer_list housekeeping_timer;
632 struct timer_list mesh_path_timer;
633 struct timer_list mesh_path_root_timer;
634
635 unsigned long wrkq_flags;
636 unsigned long mbss_changed;
637
638 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
639 size_t mesh_id_len;
640 /* Active Path Selection Protocol Identifier */
641 u8 mesh_pp_id;
642 /* Active Path Selection Metric Identifier */
643 u8 mesh_pm_id;
644 /* Congestion Control Mode Identifier */
645 u8 mesh_cc_id;
646 /* Synchronization Protocol Identifier */
647 u8 mesh_sp_id;
648 /* Authentication Protocol Identifier */
649 u8 mesh_auth_id;
650 /* Local mesh Sequence Number */
651 u32 sn;
652 /* Last used PREQ ID */
653 u32 preq_id;
654 atomic_t mpaths;
655 /* Timestamp of last SN update */
656 unsigned long last_sn_update;
657 /* Time when it's ok to send next PERR */
658 unsigned long next_perr;
659 /* Timestamp of last PREQ sent */
660 unsigned long last_preq;
661 struct mesh_rmc *rmc;
662 spinlock_t mesh_preq_queue_lock;
663 struct mesh_preq_queue preq_queue;
664 int preq_queue_len;
665 struct mesh_stats mshstats;
666 struct mesh_config mshcfg;
667 atomic_t estab_plinks;
668 u32 mesh_seqnum;
669 bool accepting_plinks;
670 int num_gates;
671 struct beacon_data __rcu *beacon;
672 const u8 *ie;
673 u8 ie_len;
674 enum {
675 IEEE80211_MESH_SEC_NONE = 0x0,
676 IEEE80211_MESH_SEC_AUTHED = 0x1,
677 IEEE80211_MESH_SEC_SECURED = 0x2,
678 } security;
679 bool user_mpm;
680 /* Extensible Synchronization Framework */
681 const struct ieee80211_mesh_sync_ops *sync_ops;
682 s64 sync_offset_clockdrift_max;
683 spinlock_t sync_offset_lock;
684 /* mesh power save */
685 enum nl80211_mesh_power_mode nonpeer_pm;
686 int ps_peers_light_sleep;
687 int ps_peers_deep_sleep;
688 struct ps_data ps;
689 /* Channel Switching Support */
690 struct mesh_csa_settings __rcu *csa;
691 enum {
692 IEEE80211_MESH_CSA_ROLE_NONE,
693 IEEE80211_MESH_CSA_ROLE_INIT,
694 IEEE80211_MESH_CSA_ROLE_REPEATER,
695 } csa_role;
696 u8 chsw_ttl;
697 u16 pre_value;
698
699 /* offset from skb->data while building IE */
700 int meshconf_offset;
701
702 struct mesh_table *mesh_paths;
703 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */
704 int mesh_paths_generation;
705 int mpp_paths_generation;
706 };
707
708 #ifdef CONFIG_MAC80211_MESH
709 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
710 do { (msh)->mshstats.name++; } while (0)
711 #else
712 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
713 do { } while (0)
714 #endif
715
716 /**
717 * enum ieee80211_sub_if_data_flags - virtual interface flags
718 *
719 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
720 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
721 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
722 * associated stations and deliver multicast frames both
723 * back to wireless media and to the local net stack.
724 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
725 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
726 */
727 enum ieee80211_sub_if_data_flags {
728 IEEE80211_SDATA_ALLMULTI = BIT(0),
729 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
730 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
731 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
732 IEEE80211_SDATA_IN_DRIVER = BIT(5),
733 };
734
735 /**
736 * enum ieee80211_sdata_state_bits - virtual interface state bits
737 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
738 * mirrors netif_running() but is separate for interface type
739 * change handling while the interface is up
740 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
741 * mode, so queues are stopped
742 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
743 * to offchannel, reset when offchannel returns
744 */
745 enum ieee80211_sdata_state_bits {
746 SDATA_STATE_RUNNING,
747 SDATA_STATE_OFFCHANNEL,
748 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
749 };
750
751 /**
752 * enum ieee80211_chanctx_mode - channel context configuration mode
753 *
754 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
755 * multiple interfaces
756 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
757 * only by a single interface. This can be used for example for
758 * non-fixed channel IBSS.
759 */
760 enum ieee80211_chanctx_mode {
761 IEEE80211_CHANCTX_SHARED,
762 IEEE80211_CHANCTX_EXCLUSIVE
763 };
764
765 /**
766 * enum ieee80211_chanctx_replace_state - channel context replacement state
767 *
768 * This is used for channel context in-place reservations that require channel
769 * context switch/swap.
770 *
771 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
772 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
773 * by a (not yet registered) channel context pointed by %replace_ctx.
774 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
775 * replaces an existing channel context pointed to by %replace_ctx.
776 */
777 enum ieee80211_chanctx_replace_state {
778 IEEE80211_CHANCTX_REPLACE_NONE,
779 IEEE80211_CHANCTX_WILL_BE_REPLACED,
780 IEEE80211_CHANCTX_REPLACES_OTHER,
781 };
782
783 struct ieee80211_chanctx {
784 struct list_head list;
785 struct rcu_head rcu_head;
786
787 struct list_head assigned_vifs;
788 struct list_head reserved_vifs;
789
790 enum ieee80211_chanctx_replace_state replace_state;
791 struct ieee80211_chanctx *replace_ctx;
792
793 enum ieee80211_chanctx_mode mode;
794 bool driver_present;
795
796 struct ieee80211_chanctx_conf conf;
797 };
798
799 struct mac80211_qos_map {
800 struct cfg80211_qos_map qos_map;
801 struct rcu_head rcu_head;
802 };
803
804 enum txq_info_flags {
805 IEEE80211_TXQ_STOP,
806 IEEE80211_TXQ_AMPDU,
807 IEEE80211_TXQ_NO_AMSDU,
808 };
809
810 /**
811 * struct txq_info - per tid queue
812 *
813 * @tin: contains packets split into multiple flows
814 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
815 * a fq_flow which is already owned by a different tin
816 * @def_cvars: codel vars for @def_flow
817 * @frags: used to keep fragments created after dequeue
818 */
819 struct txq_info {
820 struct fq_tin tin;
821 struct fq_flow def_flow;
822 struct codel_vars def_cvars;
823 struct codel_stats cstats;
824 struct sk_buff_head frags;
825 unsigned long flags;
826
827 /* keep last! */
828 struct ieee80211_txq txq;
829 };
830
831 struct ieee80211_if_mntr {
832 u32 flags;
833 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
834 };
835
836 /**
837 * struct ieee80211_if_nan - NAN state
838 *
839 * @conf: current NAN configuration
840 * @func_ids: a bitmap of available instance_id's
841 */
842 struct ieee80211_if_nan {
843 struct cfg80211_nan_conf conf;
844
845 /* protects function_inst_ids */
846 spinlock_t func_lock;
847 struct idr function_inst_ids;
848 };
849
850 struct ieee80211_sub_if_data {
851 struct list_head list;
852
853 struct wireless_dev wdev;
854
855 /* keys */
856 struct list_head key_list;
857
858 /* count for keys needing tailroom space allocation */
859 int crypto_tx_tailroom_needed_cnt;
860 int crypto_tx_tailroom_pending_dec;
861 struct delayed_work dec_tailroom_needed_wk;
862
863 struct net_device *dev;
864 struct ieee80211_local *local;
865
866 unsigned int flags;
867
868 unsigned long state;
869
870 char name[IFNAMSIZ];
871
872 /* Fragment table for host-based reassembly */
873 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
874 unsigned int fragment_next;
875
876 /* TID bitmap for NoAck policy */
877 u16 noack_map;
878
879 /* bit field of ACM bits (BIT(802.1D tag)) */
880 u8 wmm_acm;
881
882 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
883 struct ieee80211_key __rcu *default_unicast_key;
884 struct ieee80211_key __rcu *default_multicast_key;
885 struct ieee80211_key __rcu *default_mgmt_key;
886
887 u16 sequence_number;
888 __be16 control_port_protocol;
889 bool control_port_no_encrypt;
890 int encrypt_headroom;
891
892 atomic_t num_tx_queued;
893 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
894 struct mac80211_qos_map __rcu *qos_map;
895
896 struct work_struct csa_finalize_work;
897 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
898 struct cfg80211_chan_def csa_chandef;
899
900 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
901 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
902
903 /* context reservation -- protected with chanctx_mtx */
904 struct ieee80211_chanctx *reserved_chanctx;
905 struct cfg80211_chan_def reserved_chandef;
906 bool reserved_radar_required;
907 bool reserved_ready;
908
909 /* used to reconfigure hardware SM PS */
910 struct work_struct recalc_smps;
911
912 struct work_struct work;
913 struct sk_buff_head skb_queue;
914
915 u8 needed_rx_chains;
916 enum ieee80211_smps_mode smps_mode;
917
918 int user_power_level; /* in dBm */
919 int ap_power_level; /* in dBm */
920
921 bool radar_required;
922 struct delayed_work dfs_cac_timer_work;
923
924 /*
925 * AP this belongs to: self in AP mode and
926 * corresponding AP in VLAN mode, NULL for
927 * all others (might be needed later in IBSS)
928 */
929 struct ieee80211_if_ap *bss;
930
931 /* bitmap of allowed (non-MCS) rate indexes for rate control */
932 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
933
934 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
935 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
936
937 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
938 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
939
940 union {
941 struct ieee80211_if_ap ap;
942 struct ieee80211_if_wds wds;
943 struct ieee80211_if_vlan vlan;
944 struct ieee80211_if_managed mgd;
945 struct ieee80211_if_ibss ibss;
946 struct ieee80211_if_mesh mesh;
947 struct ieee80211_if_ocb ocb;
948 struct ieee80211_if_mntr mntr;
949 struct ieee80211_if_nan nan;
950 } u;
951
952 #ifdef CONFIG_MAC80211_DEBUGFS
953 struct {
954 struct dentry *subdir_stations;
955 struct dentry *default_unicast_key;
956 struct dentry *default_multicast_key;
957 struct dentry *default_mgmt_key;
958 } debugfs;
959 #endif
960
961 /* must be last, dynamically sized area in this! */
962 struct ieee80211_vif vif;
963 };
964
965 static inline
vif_to_sdata(struct ieee80211_vif * p)966 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
967 {
968 return container_of(p, struct ieee80211_sub_if_data, vif);
969 }
970
sdata_lock(struct ieee80211_sub_if_data * sdata)971 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
972 __acquires(&sdata->wdev.mtx)
973 {
974 mutex_lock(&sdata->wdev.mtx);
975 __acquire(&sdata->wdev.mtx);
976 }
977
sdata_unlock(struct ieee80211_sub_if_data * sdata)978 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
979 __releases(&sdata->wdev.mtx)
980 {
981 mutex_unlock(&sdata->wdev.mtx);
982 __release(&sdata->wdev.mtx);
983 }
984
985 #define sdata_dereference(p, sdata) \
986 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
987
988 static inline void
sdata_assert_lock(struct ieee80211_sub_if_data * sdata)989 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
990 {
991 lockdep_assert_held(&sdata->wdev.mtx);
992 }
993
994 static inline int
ieee80211_chandef_get_shift(struct cfg80211_chan_def * chandef)995 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
996 {
997 switch (chandef->width) {
998 case NL80211_CHAN_WIDTH_5:
999 return 2;
1000 case NL80211_CHAN_WIDTH_10:
1001 return 1;
1002 default:
1003 return 0;
1004 }
1005 }
1006
1007 static inline int
ieee80211_vif_get_shift(struct ieee80211_vif * vif)1008 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1009 {
1010 struct ieee80211_chanctx_conf *chanctx_conf;
1011 int shift = 0;
1012
1013 rcu_read_lock();
1014 chanctx_conf = rcu_dereference(vif->chanctx_conf);
1015 if (chanctx_conf)
1016 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1017 rcu_read_unlock();
1018
1019 return shift;
1020 }
1021
1022 struct ieee80211_rx_agg {
1023 u8 addr[ETH_ALEN];
1024 u16 tid;
1025 };
1026
1027 enum sdata_queue_type {
1028 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
1029 IEEE80211_SDATA_QUEUE_AGG_START = 1,
1030 IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
1031 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3,
1032 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4,
1033 };
1034
1035 enum {
1036 IEEE80211_RX_MSG = 1,
1037 IEEE80211_TX_STATUS_MSG = 2,
1038 };
1039
1040 enum queue_stop_reason {
1041 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1042 IEEE80211_QUEUE_STOP_REASON_PS,
1043 IEEE80211_QUEUE_STOP_REASON_CSA,
1044 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1045 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1046 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1047 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1048 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1049 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1050 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1051
1052 IEEE80211_QUEUE_STOP_REASONS,
1053 };
1054
1055 #ifdef CONFIG_MAC80211_LEDS
1056 struct tpt_led_trigger {
1057 char name[32];
1058 const struct ieee80211_tpt_blink *blink_table;
1059 unsigned int blink_table_len;
1060 struct timer_list timer;
1061 unsigned long prev_traffic;
1062 unsigned long tx_bytes, rx_bytes;
1063 unsigned int active, want;
1064 bool running;
1065 };
1066 #endif
1067
1068 /**
1069 * mac80211 scan flags - currently active scan mode
1070 *
1071 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1072 * well be on the operating channel
1073 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1074 * determine if we are on the operating channel or not
1075 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1076 * channel. This should not interrupt normal traffic.
1077 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1078 * that the scan completed.
1079 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1080 * a scan complete for an aborted scan.
1081 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1082 * cancelled.
1083 */
1084 enum {
1085 SCAN_SW_SCANNING,
1086 SCAN_HW_SCANNING,
1087 SCAN_ONCHANNEL_SCANNING,
1088 SCAN_COMPLETED,
1089 SCAN_ABORTED,
1090 SCAN_HW_CANCELLED,
1091 };
1092
1093 /**
1094 * enum mac80211_scan_state - scan state machine states
1095 *
1096 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1097 * determines if we should keep on scanning or switch back to the
1098 * operating channel
1099 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1100 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1101 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1102 * send out data
1103 * @SCAN_RESUME: Resume the scan and scan the next channel
1104 * @SCAN_ABORT: Abort the scan and go back to operating channel
1105 */
1106 enum mac80211_scan_state {
1107 SCAN_DECISION,
1108 SCAN_SET_CHANNEL,
1109 SCAN_SEND_PROBE,
1110 SCAN_SUSPEND,
1111 SCAN_RESUME,
1112 SCAN_ABORT,
1113 };
1114
1115 struct ieee80211_local {
1116 /* embed the driver visible part.
1117 * don't cast (use the static inlines below), but we keep
1118 * it first anyway so they become a no-op */
1119 struct ieee80211_hw hw;
1120
1121 struct fq fq;
1122 struct codel_vars *cvars;
1123 struct codel_params cparams;
1124
1125 const struct ieee80211_ops *ops;
1126
1127 /*
1128 * private workqueue to mac80211. mac80211 makes this accessible
1129 * via ieee80211_queue_work()
1130 */
1131 struct workqueue_struct *workqueue;
1132
1133 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1134 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1135 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1136 spinlock_t queue_stop_reason_lock;
1137
1138 int open_count;
1139 int monitors, cooked_mntrs;
1140 /* number of interfaces with corresponding FIF_ flags */
1141 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1142 fif_probe_req;
1143 int probe_req_reg;
1144 unsigned int filter_flags; /* FIF_* */
1145
1146 bool wiphy_ciphers_allocated;
1147
1148 bool use_chanctx;
1149
1150 /* protects the aggregated multicast list and filter calls */
1151 spinlock_t filter_lock;
1152
1153 /* used for uploading changed mc list */
1154 struct work_struct reconfig_filter;
1155
1156 /* aggregated multicast list */
1157 struct netdev_hw_addr_list mc_list;
1158
1159 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1160
1161 /*
1162 * suspended is true if we finished all the suspend _and_ we have
1163 * not yet come up from resume. This is to be used by mac80211
1164 * to ensure driver sanity during suspend and mac80211's own
1165 * sanity. It can eventually be used for WoW as well.
1166 */
1167 bool suspended;
1168
1169 /*
1170 * Resuming is true while suspended, but when we're reprogramming the
1171 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1172 * again even though some other parts of the stack are still suspended
1173 * and we still drop received frames to avoid waking the stack.
1174 */
1175 bool resuming;
1176
1177 /*
1178 * quiescing is true during the suspend process _only_ to
1179 * ease timer cancelling etc.
1180 */
1181 bool quiescing;
1182
1183 /* device is started */
1184 bool started;
1185
1186 /* device is during a HW reconfig */
1187 bool in_reconfig;
1188
1189 /* wowlan is enabled -- don't reconfig on resume */
1190 bool wowlan;
1191
1192 struct work_struct radar_detected_work;
1193
1194 /* number of RX chains the hardware has */
1195 u8 rx_chains;
1196
1197 int tx_headroom; /* required headroom for hardware/radiotap */
1198
1199 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1200 * added to skb_queue will be processed, but frames in
1201 * skb_queue_unreliable may be dropped if the total length of these
1202 * queues increases over the limit. */
1203 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1204 struct tasklet_struct tasklet;
1205 struct sk_buff_head skb_queue;
1206 struct sk_buff_head skb_queue_unreliable;
1207
1208 spinlock_t rx_path_lock;
1209
1210 /* Station data */
1211 /*
1212 * The mutex only protects the list, hash table and
1213 * counter, reads are done with RCU.
1214 */
1215 struct mutex sta_mtx;
1216 spinlock_t tim_lock;
1217 unsigned long num_sta;
1218 struct list_head sta_list;
1219 struct rhltable sta_hash;
1220 struct timer_list sta_cleanup;
1221 int sta_generation;
1222
1223 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1224 struct tasklet_struct tx_pending_tasklet;
1225
1226 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1227
1228 /* number of interfaces with allmulti RX */
1229 atomic_t iff_allmultis;
1230
1231 struct rate_control_ref *rate_ctrl;
1232
1233 struct crypto_cipher *wep_tx_tfm;
1234 struct crypto_cipher *wep_rx_tfm;
1235 u32 wep_iv;
1236
1237 /* see iface.c */
1238 struct list_head interfaces;
1239 struct mutex iflist_mtx;
1240
1241 /*
1242 * Key mutex, protects sdata's key_list and sta_info's
1243 * key pointers (write access, they're RCU.)
1244 */
1245 struct mutex key_mtx;
1246
1247 /* mutex for scan and work locking */
1248 struct mutex mtx;
1249
1250 /* Scanning and BSS list */
1251 unsigned long scanning;
1252 struct cfg80211_ssid scan_ssid;
1253 struct cfg80211_scan_request *int_scan_req;
1254 struct cfg80211_scan_request __rcu *scan_req;
1255 struct ieee80211_scan_request *hw_scan_req;
1256 struct cfg80211_chan_def scan_chandef;
1257 enum nl80211_band hw_scan_band;
1258 int scan_channel_idx;
1259 int scan_ies_len;
1260 int hw_scan_ies_bufsize;
1261 struct cfg80211_scan_info scan_info;
1262
1263 struct work_struct sched_scan_stopped_work;
1264 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1265 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1266 u8 scan_addr[ETH_ALEN];
1267
1268 unsigned long leave_oper_channel_time;
1269 enum mac80211_scan_state next_scan_state;
1270 struct delayed_work scan_work;
1271 struct ieee80211_sub_if_data __rcu *scan_sdata;
1272 /* For backward compatibility only -- do not use */
1273 struct cfg80211_chan_def _oper_chandef;
1274
1275 /* Temporary remain-on-channel for off-channel operations */
1276 struct ieee80211_channel *tmp_channel;
1277
1278 /* channel contexts */
1279 struct list_head chanctx_list;
1280 struct mutex chanctx_mtx;
1281
1282 #ifdef CONFIG_MAC80211_LEDS
1283 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1284 struct led_trigger tpt_led;
1285 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1286 atomic_t radio_led_active, tpt_led_active;
1287 struct tpt_led_trigger *tpt_led_trigger;
1288 #endif
1289
1290 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1291 /* SNMP counters */
1292 /* dot11CountersTable */
1293 u32 dot11TransmittedFragmentCount;
1294 u32 dot11MulticastTransmittedFrameCount;
1295 u32 dot11FailedCount;
1296 u32 dot11RetryCount;
1297 u32 dot11MultipleRetryCount;
1298 u32 dot11FrameDuplicateCount;
1299 u32 dot11ReceivedFragmentCount;
1300 u32 dot11MulticastReceivedFrameCount;
1301 u32 dot11TransmittedFrameCount;
1302
1303 /* TX/RX handler statistics */
1304 unsigned int tx_handlers_drop;
1305 unsigned int tx_handlers_queued;
1306 unsigned int tx_handlers_drop_wep;
1307 unsigned int tx_handlers_drop_not_assoc;
1308 unsigned int tx_handlers_drop_unauth_port;
1309 unsigned int rx_handlers_drop;
1310 unsigned int rx_handlers_queued;
1311 unsigned int rx_handlers_drop_nullfunc;
1312 unsigned int rx_handlers_drop_defrag;
1313 unsigned int tx_expand_skb_head;
1314 unsigned int tx_expand_skb_head_cloned;
1315 unsigned int rx_expand_skb_head_defrag;
1316 unsigned int rx_handlers_fragments;
1317 unsigned int tx_status_drop;
1318 #define I802_DEBUG_INC(c) (c)++
1319 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1320 #define I802_DEBUG_INC(c) do { } while (0)
1321 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1322
1323
1324 int total_ps_buffered; /* total number of all buffered unicast and
1325 * multicast packets for power saving stations
1326 */
1327
1328 bool pspolling;
1329 bool offchannel_ps_enabled;
1330 /*
1331 * PS can only be enabled when we have exactly one managed
1332 * interface (and monitors) in PS, this then points there.
1333 */
1334 struct ieee80211_sub_if_data *ps_sdata;
1335 struct work_struct dynamic_ps_enable_work;
1336 struct work_struct dynamic_ps_disable_work;
1337 struct timer_list dynamic_ps_timer;
1338 struct notifier_block ifa_notifier;
1339 struct notifier_block ifa6_notifier;
1340
1341 /*
1342 * The dynamic ps timeout configured from user space via WEXT -
1343 * this will override whatever chosen by mac80211 internally.
1344 */
1345 int dynamic_ps_forced_timeout;
1346
1347 int user_power_level; /* in dBm, for all interfaces */
1348
1349 enum ieee80211_smps_mode smps_mode;
1350
1351 struct work_struct restart_work;
1352
1353 #ifdef CONFIG_MAC80211_DEBUGFS
1354 struct local_debugfsdentries {
1355 struct dentry *rcdir;
1356 struct dentry *keys;
1357 } debugfs;
1358 #endif
1359
1360 /*
1361 * Remain-on-channel support
1362 */
1363 struct delayed_work roc_work;
1364 struct list_head roc_list;
1365 struct work_struct hw_roc_start, hw_roc_done;
1366 unsigned long hw_roc_start_time;
1367 u64 roc_cookie_counter;
1368
1369 struct idr ack_status_frames;
1370 spinlock_t ack_status_lock;
1371
1372 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1373
1374 /* virtual monitor interface */
1375 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1376 struct cfg80211_chan_def monitor_chandef;
1377
1378 /* extended capabilities provided by mac80211 */
1379 u8 ext_capa[8];
1380
1381 /* TDLS channel switch */
1382 struct work_struct tdls_chsw_work;
1383 struct sk_buff_head skb_queue_tdls_chsw;
1384 };
1385
1386 static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(struct net_device * dev)1387 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1388 {
1389 return netdev_priv(dev);
1390 }
1391
1392 static inline struct ieee80211_sub_if_data *
IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev * wdev)1393 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1394 {
1395 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1396 }
1397
1398 static inline struct ieee80211_supported_band *
ieee80211_get_sband(struct ieee80211_sub_if_data * sdata)1399 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1400 {
1401 struct ieee80211_local *local = sdata->local;
1402 struct ieee80211_chanctx_conf *chanctx_conf;
1403 enum nl80211_band band;
1404
1405 rcu_read_lock();
1406 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1407
1408 if (WARN_ON(!chanctx_conf)) {
1409 rcu_read_unlock();
1410 return NULL;
1411 }
1412
1413 band = chanctx_conf->def.chan->band;
1414 rcu_read_unlock();
1415
1416 return local->hw.wiphy->bands[band];
1417 }
1418
1419 /* this struct represents 802.11n's RA/TID combination */
1420 struct ieee80211_ra_tid {
1421 u8 ra[ETH_ALEN];
1422 u16 tid;
1423 };
1424
1425 /* this struct holds the value parsing from channel switch IE */
1426 struct ieee80211_csa_ie {
1427 struct cfg80211_chan_def chandef;
1428 u8 mode;
1429 u8 count;
1430 u8 ttl;
1431 u16 pre_value;
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 *mesh_id;
1459 const u8 *peering;
1460 const __le16 *awake_window;
1461 const u8 *preq;
1462 const u8 *prep;
1463 const u8 *perr;
1464 const struct ieee80211_rann_ie *rann;
1465 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1466 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1467 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1468 const u8 *country_elem;
1469 const u8 *pwr_constr_elem;
1470 const u8 *cisco_dtpc_elem;
1471 const struct ieee80211_timeout_interval_ie *timeout_int;
1472 const u8 *opmode_notif;
1473 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1474 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1475
1476 /* length of them, respectively */
1477 u8 ext_capab_len;
1478 u8 ssid_len;
1479 u8 supp_rates_len;
1480 u8 tim_len;
1481 u8 challenge_len;
1482 u8 rsn_len;
1483 u8 ext_supp_rates_len;
1484 u8 wmm_info_len;
1485 u8 wmm_param_len;
1486 u8 mesh_id_len;
1487 u8 peering_len;
1488 u8 preq_len;
1489 u8 prep_len;
1490 u8 perr_len;
1491 u8 country_elem_len;
1492
1493 /* whether a parse error occurred while retrieving these elements */
1494 bool parse_error;
1495 };
1496
hw_to_local(struct ieee80211_hw * hw)1497 static inline struct ieee80211_local *hw_to_local(
1498 struct ieee80211_hw *hw)
1499 {
1500 return container_of(hw, struct ieee80211_local, hw);
1501 }
1502
to_txq_info(struct ieee80211_txq * txq)1503 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1504 {
1505 return container_of(txq, struct txq_info, txq);
1506 }
1507
txq_has_queue(struct ieee80211_txq * txq)1508 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1509 {
1510 struct txq_info *txqi = to_txq_info(txq);
1511
1512 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1513 }
1514
ieee80211_bssid_match(const u8 * raddr,const u8 * addr)1515 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1516 {
1517 return ether_addr_equal(raddr, addr) ||
1518 is_broadcast_ether_addr(raddr);
1519 }
1520
1521 static inline bool
ieee80211_have_rx_timestamp(struct ieee80211_rx_status * status)1522 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1523 {
1524 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1525 status->flag & RX_FLAG_MACTIME_END);
1526 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END))
1527 return true;
1528 /* can't handle HT/VHT preamble yet */
1529 if (status->flag & RX_FLAG_MACTIME_PLCP_START &&
1530 !(status->flag & (RX_FLAG_HT | RX_FLAG_VHT)))
1531 return true;
1532 return false;
1533 }
1534
1535 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1536 struct ieee80211_rx_status *status,
1537 unsigned int mpdu_len,
1538 unsigned int mpdu_offset);
1539 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1540 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1541 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1542 u32 changed);
1543 void ieee80211_configure_filter(struct ieee80211_local *local);
1544 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1545
1546 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1547 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1548 u64 *cookie, gfp_t gfp);
1549
1550 void ieee80211_check_fast_rx(struct sta_info *sta);
1551 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1552 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1553 void ieee80211_clear_fast_rx(struct sta_info *sta);
1554
1555 /* STA code */
1556 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1557 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1558 struct cfg80211_auth_request *req);
1559 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1560 struct cfg80211_assoc_request *req);
1561 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1562 struct cfg80211_deauth_request *req);
1563 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1564 struct cfg80211_disassoc_request *req);
1565 void ieee80211_send_pspoll(struct ieee80211_local *local,
1566 struct ieee80211_sub_if_data *sdata);
1567 void ieee80211_recalc_ps(struct ieee80211_local *local);
1568 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1569 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1570 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1571 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1572 struct sk_buff *skb);
1573 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1574 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1575 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1576 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1577 __le16 fc, bool acked);
1578 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1579 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1580 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1581
1582 /* IBSS code */
1583 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1584 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1585 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1586 const u8 *bssid, const u8 *addr, u32 supp_rates);
1587 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1588 struct cfg80211_ibss_params *params);
1589 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1590 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1591 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1592 struct sk_buff *skb);
1593 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1594 struct cfg80211_csa_settings *csa_settings);
1595 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1596 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1597
1598 /* OCB code */
1599 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1600 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1601 const u8 *bssid, const u8 *addr, u32 supp_rates);
1602 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1603 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1604 struct ocb_setup *setup);
1605 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1606
1607 /* mesh code */
1608 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1609 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1610 struct sk_buff *skb);
1611 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1612 struct cfg80211_csa_settings *csa_settings);
1613 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1614
1615 /* scan/BSS handling */
1616 void ieee80211_scan_work(struct work_struct *work);
1617 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1618 const u8 *ssid, u8 ssid_len,
1619 struct ieee80211_channel **channels,
1620 unsigned int n_channels,
1621 enum nl80211_bss_scan_width scan_width);
1622 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1623 struct cfg80211_scan_request *req);
1624 void ieee80211_scan_cancel(struct ieee80211_local *local);
1625 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1626 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1627
1628 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1629 struct ieee80211_bss *
1630 ieee80211_bss_info_update(struct ieee80211_local *local,
1631 struct ieee80211_rx_status *rx_status,
1632 struct ieee80211_mgmt *mgmt,
1633 size_t len,
1634 struct ieee802_11_elems *elems,
1635 struct ieee80211_channel *channel);
1636 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1637 struct ieee80211_bss *bss);
1638
1639 /* scheduled scan handling */
1640 int
1641 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1642 struct cfg80211_sched_scan_request *req);
1643 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1644 struct cfg80211_sched_scan_request *req);
1645 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1646 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1647 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1648
1649 /* off-channel/mgmt-tx */
1650 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1651 void ieee80211_offchannel_return(struct ieee80211_local *local);
1652 void ieee80211_roc_setup(struct ieee80211_local *local);
1653 void ieee80211_start_next_roc(struct ieee80211_local *local);
1654 void ieee80211_roc_purge(struct ieee80211_local *local,
1655 struct ieee80211_sub_if_data *sdata);
1656 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1657 struct ieee80211_channel *chan,
1658 unsigned int duration, u64 *cookie);
1659 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1660 struct wireless_dev *wdev, u64 cookie);
1661 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1662 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1663 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1664 struct wireless_dev *wdev, u64 cookie);
1665
1666 /* channel switch handling */
1667 void ieee80211_csa_finalize_work(struct work_struct *work);
1668 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1669 struct cfg80211_csa_settings *params);
1670
1671 /* interface handling */
1672 int ieee80211_iface_init(void);
1673 void ieee80211_iface_exit(void);
1674 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1675 unsigned char name_assign_type,
1676 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1677 struct vif_params *params);
1678 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1679 enum nl80211_iftype type);
1680 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1681 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1682 u32 ieee80211_idle_off(struct ieee80211_local *local);
1683 void ieee80211_recalc_idle(struct ieee80211_local *local);
1684 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1685 const int offset);
1686 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1687 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1688 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1689 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1690
1691 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1692 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1693 bool update_bss);
1694
ieee80211_sdata_running(struct ieee80211_sub_if_data * sdata)1695 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1696 {
1697 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1698 }
1699
1700 /* tx handling */
1701 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1702 void ieee80211_tx_pending(unsigned long data);
1703 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1704 struct net_device *dev);
1705 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1706 struct net_device *dev);
1707 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1708 struct net_device *dev,
1709 u32 info_flags);
1710 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1711 struct sk_buff_head *skbs);
1712 struct sk_buff *
1713 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1714 struct sk_buff *skb, u32 info_flags);
1715 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1716 struct ieee80211_supported_band *sband,
1717 int retry_count, int shift, bool send_to_cooked);
1718
1719 void ieee80211_check_fast_xmit(struct sta_info *sta);
1720 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1721 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1722 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1723
1724 /* HT */
1725 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1726 struct ieee80211_sta_ht_cap *ht_cap);
1727 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1728 struct ieee80211_supported_band *sband,
1729 const struct ieee80211_ht_cap *ht_cap_ie,
1730 struct sta_info *sta);
1731 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1732 const u8 *da, u16 tid,
1733 u16 initiator, u16 reason_code);
1734 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1735 enum ieee80211_smps_mode smps, const u8 *da,
1736 const u8 *bssid);
1737 void ieee80211_request_smps_ap_work(struct work_struct *work);
1738 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1739 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1740 enum ieee80211_smps_mode smps_mode_new);
1741
1742 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1743 u16 initiator, u16 reason, bool stop);
1744 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1745 u16 initiator, u16 reason, bool stop);
1746 void __ieee80211_start_rx_ba_session(struct sta_info *sta,
1747 u8 dialog_token, u16 timeout,
1748 u16 start_seq_num, u16 ba_policy, u16 tid,
1749 u16 buf_size, bool tx, bool auto_seq);
1750 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1751 enum ieee80211_agg_stop_reason reason);
1752 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1753 struct sta_info *sta,
1754 struct ieee80211_mgmt *mgmt, size_t len);
1755 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1756 struct sta_info *sta,
1757 struct ieee80211_mgmt *mgmt,
1758 size_t len);
1759 void ieee80211_process_addba_request(struct ieee80211_local *local,
1760 struct sta_info *sta,
1761 struct ieee80211_mgmt *mgmt,
1762 size_t len);
1763
1764 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1765 enum ieee80211_agg_stop_reason reason);
1766 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1767 enum ieee80211_agg_stop_reason reason);
1768 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1769 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1770 void ieee80211_ba_session_work(struct work_struct *work);
1771 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1772 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1773
1774 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1775
1776 /* VHT */
1777 void
1778 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1779 struct ieee80211_supported_band *sband,
1780 const struct ieee80211_vht_cap *vht_cap_ie,
1781 struct sta_info *sta);
1782 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1783 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1784 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1785 enum ieee80211_sta_rx_bandwidth
1786 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
1787 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
1788 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1789 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
1790 struct ieee80211_mgmt *mgmt);
1791 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1792 struct sta_info *sta, u8 opmode,
1793 enum nl80211_band band);
1794 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1795 struct sta_info *sta, u8 opmode,
1796 enum nl80211_band band);
1797 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1798 struct ieee80211_sta_vht_cap *vht_cap);
1799 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
1800 u16 vht_mask[NL80211_VHT_NSS_MAX]);
1801
1802 /* Spectrum management */
1803 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1804 struct ieee80211_mgmt *mgmt,
1805 size_t len);
1806 /**
1807 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1808 * @sdata: the sdata of the interface which has received the frame
1809 * @elems: parsed 802.11 elements received with the frame
1810 * @current_band: indicates the current band
1811 * @sta_flags: contains information about own capabilities and restrictions
1812 * to decide which channel switch announcements can be accepted. Only the
1813 * following subset of &enum ieee80211_sta_flags are evaluated:
1814 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1815 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1816 * %IEEE80211_STA_DISABLE_160MHZ.
1817 * @bssid: the currently connected bssid (for reporting)
1818 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1819 All of them will be filled with if success only.
1820 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1821 */
1822 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1823 struct ieee802_11_elems *elems,
1824 enum nl80211_band current_band,
1825 u32 sta_flags, u8 *bssid,
1826 struct ieee80211_csa_ie *csa_ie);
1827
1828 /* Suspend/resume and hw reconfiguration */
1829 int ieee80211_reconfig(struct ieee80211_local *local);
1830 void ieee80211_stop_device(struct ieee80211_local *local);
1831
1832 int __ieee80211_suspend(struct ieee80211_hw *hw,
1833 struct cfg80211_wowlan *wowlan);
1834
__ieee80211_resume(struct ieee80211_hw * hw)1835 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1836 {
1837 struct ieee80211_local *local = hw_to_local(hw);
1838
1839 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
1840 !test_bit(SCAN_COMPLETED, &local->scanning),
1841 "%s: resume with hardware scan still in progress\n",
1842 wiphy_name(hw->wiphy));
1843
1844 return ieee80211_reconfig(hw_to_local(hw));
1845 }
1846
1847 /* utility functions/constants */
1848 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1849 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
1850 int rate, int erp, int short_preamble,
1851 int shift);
1852 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1853 bool bss_notify, bool enable_qos);
1854 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
1855 struct sta_info *sta, struct sk_buff *skb);
1856
1857 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1858 struct sk_buff *skb, int tid,
1859 enum nl80211_band band);
1860
1861 static inline void
ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid,enum nl80211_band band)1862 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1863 struct sk_buff *skb, int tid,
1864 enum nl80211_band band)
1865 {
1866 rcu_read_lock();
1867 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1868 rcu_read_unlock();
1869 }
1870
ieee80211_tx_skb_tid(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid)1871 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1872 struct sk_buff *skb, int tid)
1873 {
1874 struct ieee80211_chanctx_conf *chanctx_conf;
1875
1876 rcu_read_lock();
1877 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1878 if (WARN_ON(!chanctx_conf)) {
1879 rcu_read_unlock();
1880 kfree_skb(skb);
1881 return;
1882 }
1883
1884 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1885 chanctx_conf->def.chan->band);
1886 rcu_read_unlock();
1887 }
1888
ieee80211_tx_skb(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb)1889 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1890 struct sk_buff *skb)
1891 {
1892 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1893 ieee80211_tx_skb_tid(sdata, skb, 7);
1894 }
1895
1896 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1897 struct ieee802_11_elems *elems,
1898 u64 filter, u32 crc);
ieee802_11_parse_elems(const u8 * start,size_t len,bool action,struct ieee802_11_elems * elems)1899 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1900 bool action,
1901 struct ieee802_11_elems *elems)
1902 {
1903 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1904 }
1905
1906
1907 extern const int ieee802_1d_to_ac[8];
1908
ieee80211_ac_from_tid(int tid)1909 static inline int ieee80211_ac_from_tid(int tid)
1910 {
1911 return ieee802_1d_to_ac[tid & 7];
1912 }
1913
1914 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1915 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1916 void ieee80211_dynamic_ps_timer(unsigned long data);
1917 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1918 struct ieee80211_sub_if_data *sdata,
1919 bool powersave);
1920 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1921 struct ieee80211_hdr *hdr);
1922 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1923 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
1924
1925 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1926 unsigned long queues,
1927 enum queue_stop_reason reason,
1928 bool refcounted);
1929 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1930 struct ieee80211_sub_if_data *sdata,
1931 enum queue_stop_reason reason);
1932 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1933 struct ieee80211_sub_if_data *sdata,
1934 enum queue_stop_reason reason);
1935 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1936 unsigned long queues,
1937 enum queue_stop_reason reason,
1938 bool refcounted);
1939 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1940 enum queue_stop_reason reason,
1941 bool refcounted);
1942 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1943 enum queue_stop_reason reason,
1944 bool refcounted);
1945 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1946 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1947 struct sk_buff *skb);
1948 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1949 struct sk_buff_head *skbs);
1950 void ieee80211_flush_queues(struct ieee80211_local *local,
1951 struct ieee80211_sub_if_data *sdata, bool drop);
1952 void __ieee80211_flush_queues(struct ieee80211_local *local,
1953 struct ieee80211_sub_if_data *sdata,
1954 unsigned int queues, bool drop);
1955
ieee80211_can_run_worker(struct ieee80211_local * local)1956 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
1957 {
1958 /*
1959 * If quiescing is set, we are racing with __ieee80211_suspend.
1960 * __ieee80211_suspend flushes the workers after setting quiescing,
1961 * and we check quiescing / suspended before enqueing new workers.
1962 * We should abort the worker to avoid the races below.
1963 */
1964 if (local->quiescing)
1965 return false;
1966
1967 /*
1968 * We might already be suspended if the following scenario occurs:
1969 * __ieee80211_suspend Control path
1970 *
1971 * if (local->quiescing)
1972 * return;
1973 * local->quiescing = true;
1974 * flush_workqueue();
1975 * queue_work(...);
1976 * local->suspended = true;
1977 * local->quiescing = false;
1978 * worker starts running...
1979 */
1980 if (local->suspended)
1981 return false;
1982
1983 return true;
1984 }
1985
1986 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
1987 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
1988 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
1989 struct sta_info *sta,
1990 struct txq_info *txq, int tid);
1991 void ieee80211_txq_purge(struct ieee80211_local *local,
1992 struct txq_info *txqi);
1993 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1994 u16 transaction, u16 auth_alg, u16 status,
1995 const u8 *extra, size_t extra_len, const u8 *bssid,
1996 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1997 u32 tx_flags);
1998 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1999 const u8 *bssid, u16 stype, u16 reason,
2000 bool send_frame, u8 *frame_buf);
2001 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
2002 size_t buffer_len,
2003 struct ieee80211_scan_ies *ie_desc,
2004 const u8 *ie, size_t ie_len,
2005 u8 bands_used, u32 *rate_masks,
2006 struct cfg80211_chan_def *chandef);
2007 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2008 const u8 *src, const u8 *dst,
2009 u32 ratemask,
2010 struct ieee80211_channel *chan,
2011 const u8 *ssid, size_t ssid_len,
2012 const u8 *ie, size_t ie_len,
2013 bool directed);
2014 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
2015 const u8 *src, const u8 *dst,
2016 const u8 *ssid, size_t ssid_len,
2017 const u8 *ie, size_t ie_len,
2018 u32 ratemask, bool directed, u32 tx_flags,
2019 struct ieee80211_channel *channel, bool scan);
2020
2021 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2022 struct ieee802_11_elems *elems,
2023 enum nl80211_band band, u32 *basic_rates);
2024 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2025 enum ieee80211_smps_mode smps_mode);
2026 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2027 enum ieee80211_smps_mode smps_mode);
2028 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
2029 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
2030
2031 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2032 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2033 u16 cap);
2034 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2035 const struct cfg80211_chan_def *chandef,
2036 u16 prot_mode, bool rifs_mode);
2037 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2038 u32 cap);
2039 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2040 const struct cfg80211_chan_def *chandef);
2041 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2042 const struct ieee80211_supported_band *sband,
2043 const u8 *srates, int srates_len, u32 *rates);
2044 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2045 struct sk_buff *skb, bool need_basic,
2046 enum nl80211_band band);
2047 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2048 struct sk_buff *skb, bool need_basic,
2049 enum nl80211_band band);
2050 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2051
2052 /* channel management */
2053 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2054 struct cfg80211_chan_def *chandef);
2055 bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper,
2056 struct cfg80211_chan_def *chandef);
2057 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2058
2059 int __must_check
2060 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
2061 const struct cfg80211_chan_def *chandef,
2062 enum ieee80211_chanctx_mode mode);
2063 int __must_check
2064 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
2065 const struct cfg80211_chan_def *chandef,
2066 enum ieee80211_chanctx_mode mode,
2067 bool radar_required);
2068 int __must_check
2069 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2070 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2071
2072 int __must_check
2073 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2074 const struct cfg80211_chan_def *chandef,
2075 u32 *changed);
2076 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2077 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2078 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2079 bool clear);
2080 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2081 struct ieee80211_chanctx *ctx);
2082
2083 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2084 struct ieee80211_chanctx *chanctx);
2085 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2086 struct ieee80211_chanctx *ctx);
2087 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2088
2089 void ieee80211_dfs_cac_timer(unsigned long data);
2090 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2091 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2092 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2093 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2094 struct cfg80211_csa_settings *csa_settings);
2095
2096 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2097 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2098 const struct ieee80211_cipher_scheme *
2099 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2100 enum nl80211_iftype iftype);
2101 int ieee80211_cs_headroom(struct ieee80211_local *local,
2102 struct cfg80211_crypto_settings *crypto,
2103 enum nl80211_iftype iftype);
2104 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2105 struct ieee80211_sub_if_data *sdata);
2106 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2107 const struct cfg80211_chan_def *chandef,
2108 enum ieee80211_chanctx_mode chanmode,
2109 u8 radar_detect);
2110 int ieee80211_max_num_channels(struct ieee80211_local *local);
2111 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta);
2112 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2113 struct ieee80211_chanctx *ctx);
2114
2115 /* TDLS */
2116 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2117 const u8 *peer, u8 action_code, u8 dialog_token,
2118 u16 status_code, u32 peer_capability,
2119 bool initiator, const u8 *extra_ies,
2120 size_t extra_ies_len);
2121 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2122 const u8 *peer, enum nl80211_tdls_operation oper);
2123 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2124 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2125 const u8 *addr, u8 oper_class,
2126 struct cfg80211_chan_def *chandef);
2127 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2128 struct net_device *dev,
2129 const u8 *addr);
2130 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2131 void ieee80211_tdls_chsw_work(struct work_struct *wk);
2132
2133 extern const struct ethtool_ops ieee80211_ethtool_ops;
2134
2135 #ifdef CONFIG_MAC80211_NOINLINE
2136 #define debug_noinline noinline
2137 #else
2138 #define debug_noinline
2139 #endif
2140
2141 #endif /* IEEE80211_I_H */
2142