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staging: lustre: lnet: klnds: socklnd: Move extern declarations to header
[linux-2.6/btrfs-unstable.git] / net / mac80211 / ieee80211_i.h
blobd832bd59236be15c5a6bb86dbb1efc4547025f51
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 2013-2014 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 "key.h"
34 #include "sta_info.h"
35 #include "debug.h"
36
37 extern const struct cfg80211_ops mac80211_config_ops;
38
39 struct ieee80211_local;
40
41 /* Maximum number of broadcast/multicast frames to buffer when some of the
42 * associated stations are using power saving. */
43 #define AP_MAX_BC_BUFFER 128
44
45 /* Maximum number of frames buffered to all STAs, including multicast frames.
46 * Note: increasing this limit increases the potential memory requirement. Each
47 * frame can be up to about 2 kB long. */
48 #define TOTAL_MAX_TX_BUFFER 512
49
50 /* Required encryption head and tailroom */
51 #define IEEE80211_ENCRYPT_HEADROOM 8
52 #define IEEE80211_ENCRYPT_TAILROOM 18
53
54 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
55 * reception of at least three fragmented frames. This limit can be increased
56 * by changing this define, at the cost of slower frame reassembly and
57 * increased memory use (about 2 kB of RAM per entry). */
58 #define IEEE80211_FRAGMENT_MAX 4
59
60 /* power level hasn't been configured (or set to automatic) */
61 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
62
63 /*
64 * Some APs experience problems when working with U-APSD. Decreasing the
65 * probability of that happening by using legacy mode for all ACs but VO isn't
66 * enough.
67 *
68 * Cisco 4410N originally forced us to enable VO by default only because it
69 * treated non-VO ACs as legacy.
70 *
71 * However some APs (notably Netgear R7000) silently reclassify packets to
72 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
73 * clients would never see some frames (e.g. ARP responses) or would fetch them
74 * accidentally after a long time.
75 *
76 * It makes little sense to enable u-APSD queues by default because it needs
77 * userspace applications to be aware of it to actually take advantage of the
78 * possible additional powersavings. Implicitly depending on driver autotrigger
79 * frame support doesn't make much sense.
80 */
81 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
82
83 #define IEEE80211_DEFAULT_MAX_SP_LEN \
84 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
85
86 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
87
88 struct ieee80211_fragment_entry {
89 struct sk_buff_head skb_list;
90 unsigned long first_frag_time;
91 u16 seq;
92 u16 extra_len;
93 u16 last_frag;
94 u8 rx_queue;
95 bool ccmp; /* Whether fragments were encrypted with CCMP */
96 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
97 };
98
99
100 struct ieee80211_bss {
101 u32 device_ts_beacon, device_ts_presp;
102
103 bool wmm_used;
104 bool uapsd_supported;
105
106 #define IEEE80211_MAX_SUPP_RATES 32
107 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
108 size_t supp_rates_len;
109 struct ieee80211_rate *beacon_rate;
110
111 /*
112 * During association, we save an ERP value from a probe response so
113 * that we can feed ERP info to the driver when handling the
114 * association completes. these fields probably won't be up-to-date
115 * otherwise, you probably don't want to use them.
116 */
117 bool has_erp_value;
118 u8 erp_value;
119
120 /* Keep track of the corruption of the last beacon/probe response. */
121 u8 corrupt_data;
122
123 /* Keep track of what bits of information we have valid info for. */
124 u8 valid_data;
125 };
126
127 /**
128 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
129 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
130 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
131 *
132 * These are bss flags that are attached to a bss in the
133 * @corrupt_data field of &struct ieee80211_bss.
134 */
135 enum ieee80211_bss_corrupt_data_flags {
136 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
137 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
138 };
139
140 /**
141 * enum ieee80211_valid_data_flags - BSS valid data flags
142 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
143 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
144 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
145 *
146 * These are bss flags that are attached to a bss in the
147 * @valid_data field of &struct ieee80211_bss. They show which parts
148 * of the data structure were received as a result of an un-corrupted
149 * beacon/probe response.
150 */
151 enum ieee80211_bss_valid_data_flags {
152 IEEE80211_BSS_VALID_WMM = BIT(1),
153 IEEE80211_BSS_VALID_RATES = BIT(2),
154 IEEE80211_BSS_VALID_ERP = BIT(3)
155 };
156
157 typedef unsigned __bitwise__ ieee80211_tx_result;
158 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
159 #define TX_DROP ((__force ieee80211_tx_result) 1u)
160 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
161
162 #define IEEE80211_TX_UNICAST BIT(1)
163 #define IEEE80211_TX_PS_BUFFERED BIT(2)
164
165 struct ieee80211_tx_data {
166 struct sk_buff *skb;
167 struct sk_buff_head skbs;
168 struct ieee80211_local *local;
169 struct ieee80211_sub_if_data *sdata;
170 struct sta_info *sta;
171 struct ieee80211_key *key;
172 struct ieee80211_tx_rate rate;
173
174 unsigned int flags;
175 };
176
177
178 typedef unsigned __bitwise__ ieee80211_rx_result;
179 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
180 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
181 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
182 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
183
184 /**
185 * enum ieee80211_packet_rx_flags - packet RX flags
186 * @IEEE80211_RX_AMSDU: a-MSDU packet
187 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
188 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
189 *
190 * These are per-frame flags that are attached to a frame in the
191 * @rx_flags field of &struct ieee80211_rx_status.
192 */
193 enum ieee80211_packet_rx_flags {
194 IEEE80211_RX_AMSDU = BIT(3),
195 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
196 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
197 };
198
199 /**
200 * enum ieee80211_rx_flags - RX data flags
201 *
202 * @IEEE80211_RX_CMNTR: received on cooked monitor already
203 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
204 * to cfg80211_report_obss_beacon().
205 *
206 * These flags are used across handling multiple interfaces
207 * for a single frame.
208 */
209 enum ieee80211_rx_flags {
210 IEEE80211_RX_CMNTR = BIT(0),
211 IEEE80211_RX_BEACON_REPORTED = BIT(1),
212 };
213
214 struct ieee80211_rx_data {
215 struct napi_struct *napi;
216 struct sk_buff *skb;
217 struct ieee80211_local *local;
218 struct ieee80211_sub_if_data *sdata;
219 struct sta_info *sta;
220 struct ieee80211_key *key;
221
222 unsigned int flags;
223
224 /*
225 * Index into sequence numbers array, 0..16
226 * since the last (16) is used for non-QoS,
227 * will be 16 on non-QoS frames.
228 */
229 int seqno_idx;
230
231 /*
232 * Index into the security IV/PN arrays, 0..16
233 * since the last (16) is used for CCMP-encrypted
234 * management frames, will be set to 16 on mgmt
235 * frames and 0 on non-QoS frames.
236 */
237 int security_idx;
238
239 u32 tkip_iv32;
240 u16 tkip_iv16;
241 };
242
243 struct ieee80211_csa_settings {
244 const u16 *counter_offsets_beacon;
245 const u16 *counter_offsets_presp;
246
247 int n_counter_offsets_beacon;
248 int n_counter_offsets_presp;
249
250 u8 count;
251 };
252
253 struct beacon_data {
254 u8 *head, *tail;
255 int head_len, tail_len;
256 struct ieee80211_meshconf_ie *meshconf;
257 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
258 u8 csa_current_counter;
259 struct rcu_head rcu_head;
260 };
261
262 struct probe_resp {
263 struct rcu_head rcu_head;
264 int len;
265 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
266 u8 data[0];
267 };
268
269 struct ps_data {
270 /* yes, this looks ugly, but guarantees that we can later use
271 * bitmap_empty :)
272 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
273 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
274 __aligned(__alignof__(unsigned long));
275 struct sk_buff_head bc_buf;
276 atomic_t num_sta_ps; /* number of stations in PS mode */
277 int dtim_count;
278 bool dtim_bc_mc;
279 };
280
281 struct ieee80211_if_ap {
282 struct beacon_data __rcu *beacon;
283 struct probe_resp __rcu *probe_resp;
284
285 /* to be used after channel switch. */
286 struct cfg80211_beacon_data *next_beacon;
287 struct list_head vlans; /* write-protected with RTNL and local->mtx */
288
289 struct ps_data ps;
290 atomic_t num_mcast_sta; /* number of stations receiving multicast */
291 enum ieee80211_smps_mode req_smps, /* requested smps mode */
292 driver_smps_mode; /* smps mode request */
293
294 struct work_struct request_smps_work;
295 };
296
297 struct ieee80211_if_wds {
298 struct sta_info *sta;
299 u8 remote_addr[ETH_ALEN];
300 };
301
302 struct ieee80211_if_vlan {
303 struct list_head list; /* write-protected with RTNL and local->mtx */
304
305 /* used for all tx if the VLAN is configured to 4-addr mode */
306 struct sta_info __rcu *sta;
307 };
308
309 struct mesh_stats {
310 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
311 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
312 __u32 fwded_frames; /* Mesh total forwarded frames */
313 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
314 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
315 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
316 };
317
318 #define PREQ_Q_F_START 0x1
319 #define PREQ_Q_F_REFRESH 0x2
320 struct mesh_preq_queue {
321 struct list_head list;
322 u8 dst[ETH_ALEN];
323 u8 flags;
324 };
325
326 struct ieee80211_roc_work {
327 struct list_head list;
328 struct list_head dependents;
329
330 struct delayed_work work;
331
332 struct ieee80211_sub_if_data *sdata;
333
334 struct ieee80211_channel *chan;
335
336 bool started, abort, hw_begun, notified;
337 bool to_be_freed;
338 bool on_channel;
339
340 unsigned long hw_start_time;
341
342 u32 duration, req_duration;
343 struct sk_buff *frame;
344 u64 cookie, mgmt_tx_cookie;
345 enum ieee80211_roc_type type;
346 };
347
348 /* flags used in struct ieee80211_if_managed.flags */
349 enum ieee80211_sta_flags {
350 IEEE80211_STA_CONNECTION_POLL = BIT(1),
351 IEEE80211_STA_CONTROL_PORT = BIT(2),
352 IEEE80211_STA_DISABLE_HT = BIT(4),
353 IEEE80211_STA_MFP_ENABLED = BIT(6),
354 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
355 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
356 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
357 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
358 IEEE80211_STA_DISABLE_VHT = BIT(11),
359 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
360 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
361 IEEE80211_STA_DISABLE_WMM = BIT(14),
362 IEEE80211_STA_ENABLE_RRM = BIT(15),
363 };
364
365 struct ieee80211_mgd_auth_data {
366 struct cfg80211_bss *bss;
367 unsigned long timeout;
368 int tries;
369 u16 algorithm, expected_transaction;
370
371 u8 key[WLAN_KEY_LEN_WEP104];
372 u8 key_len, key_idx;
373 bool done;
374 bool timeout_started;
375
376 u16 sae_trans, sae_status;
377 size_t data_len;
378 u8 data[];
379 };
380
381 struct ieee80211_mgd_assoc_data {
382 struct cfg80211_bss *bss;
383 const u8 *supp_rates;
384
385 unsigned long timeout;
386 int tries;
387
388 u16 capability;
389 u8 prev_bssid[ETH_ALEN];
390 u8 ssid[IEEE80211_MAX_SSID_LEN];
391 u8 ssid_len;
392 u8 supp_rates_len;
393 bool wmm, uapsd;
394 bool need_beacon;
395 bool synced;
396 bool timeout_started;
397
398 u8 ap_ht_param;
399
400 struct ieee80211_vht_cap ap_vht_cap;
401
402 size_t ie_len;
403 u8 ie[];
404 };
405
406 struct ieee80211_sta_tx_tspec {
407 /* timestamp of the first packet in the time slice */
408 unsigned long time_slice_start;
409
410 u32 admitted_time; /* in usecs, unlike over the air */
411 u8 tsid;
412 s8 up; /* signed to be able to invalidate with -1 during teardown */
413
414 /* consumed TX time in microseconds in the time slice */
415 u32 consumed_tx_time;
416 enum {
417 TX_TSPEC_ACTION_NONE = 0,
418 TX_TSPEC_ACTION_DOWNGRADE,
419 TX_TSPEC_ACTION_STOP_DOWNGRADE,
420 } action;
421 bool downgraded;
422 };
423
424 DECLARE_EWMA(beacon_signal, 16, 4)
425
426 struct ieee80211_if_managed {
427 struct timer_list timer;
428 struct timer_list conn_mon_timer;
429 struct timer_list bcn_mon_timer;
430 struct timer_list chswitch_timer;
431 struct work_struct monitor_work;
432 struct work_struct chswitch_work;
433 struct work_struct beacon_connection_loss_work;
434 struct work_struct csa_connection_drop_work;
435
436 unsigned long beacon_timeout;
437 unsigned long probe_timeout;
438 int probe_send_count;
439 bool nullfunc_failed;
440 bool connection_loss;
441
442 struct cfg80211_bss *associated;
443 struct ieee80211_mgd_auth_data *auth_data;
444 struct ieee80211_mgd_assoc_data *assoc_data;
445
446 u8 bssid[ETH_ALEN];
447
448 u16 aid;
449
450 bool powersave; /* powersave requested for this iface */
451 bool broken_ap; /* AP is broken -- turn off powersave */
452 bool have_beacon;
453 u8 dtim_period;
454 enum ieee80211_smps_mode req_smps, /* requested smps mode */
455 driver_smps_mode; /* smps mode request */
456
457 struct work_struct request_smps_work;
458
459 unsigned int flags;
460
461 bool csa_waiting_bcn;
462 bool csa_ignored_same_chan;
463
464 bool beacon_crc_valid;
465 u32 beacon_crc;
466
467 bool status_acked;
468 bool status_received;
469 __le16 status_fc;
470
471 enum {
472 IEEE80211_MFP_DISABLED,
473 IEEE80211_MFP_OPTIONAL,
474 IEEE80211_MFP_REQUIRED
475 } mfp; /* management frame protection */
476
477 /*
478 * Bitmask of enabled u-apsd queues,
479 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
480 * to take effect.
481 */
482 unsigned int uapsd_queues;
483
484 /*
485 * Maximum number of buffered frames AP can deliver during a
486 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
487 * Needs a new association to take effect.
488 */
489 unsigned int uapsd_max_sp_len;
490
491 int wmm_last_param_set;
492
493 u8 use_4addr;
494
495 s16 p2p_noa_index;
496
497 struct ewma_beacon_signal ave_beacon_signal;
498
499 /*
500 * Number of Beacon frames used in ave_beacon_signal. This can be used
501 * to avoid generating less reliable cqm events that would be based
502 * only on couple of received frames.
503 */
504 unsigned int count_beacon_signal;
505
506 /* Number of times beacon loss was invoked. */
507 unsigned int beacon_loss_count;
508
509 /*
510 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
511 * that triggered a cqm event. 0 indicates that no event has been
512 * generated for the current association.
513 */
514 int last_cqm_event_signal;
515
516 /*
517 * State variables for keeping track of RSSI of the AP currently
518 * connected to and informing driver when RSSI has gone
519 * below/above a certain threshold.
520 */
521 int rssi_min_thold, rssi_max_thold;
522 int last_ave_beacon_signal;
523
524 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
525 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
526 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
527 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
528
529 /* TDLS support */
530 u8 tdls_peer[ETH_ALEN] __aligned(2);
531 struct delayed_work tdls_peer_del_work;
532 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
533 struct sk_buff *teardown_skb; /* A copy to send through the AP */
534 spinlock_t teardown_lock; /* To lock changing teardown_skb */
535 bool tdls_chan_switch_prohibited;
536 bool tdls_wider_bw_prohibited;
537
538 /* WMM-AC TSPEC support */
539 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
540 /* Use a separate work struct so that we can do something here
541 * while the sdata->work is flushing the queues, for example.
542 * otherwise, in scenarios where we hardly get any traffic out
543 * on the BE queue, but there's a lot of VO traffic, we might
544 * get stuck in a downgraded situation and flush takes forever.
545 */
546 struct delayed_work tx_tspec_wk;
547 };
548
549 struct ieee80211_if_ibss {
550 struct timer_list timer;
551 struct work_struct csa_connection_drop_work;
552
553 unsigned long last_scan_completed;
554
555 u32 basic_rates;
556
557 bool fixed_bssid;
558 bool fixed_channel;
559 bool privacy;
560
561 bool control_port;
562 bool userspace_handles_dfs;
563
564 u8 bssid[ETH_ALEN] __aligned(2);
565 u8 ssid[IEEE80211_MAX_SSID_LEN];
566 u8 ssid_len, ie_len;
567 u8 *ie;
568 struct cfg80211_chan_def chandef;
569
570 unsigned long ibss_join_req;
571 /* probe response/beacon for IBSS */
572 struct beacon_data __rcu *presp;
573
574 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
575 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
576
577 spinlock_t incomplete_lock;
578 struct list_head incomplete_stations;
579
580 enum {
581 IEEE80211_IBSS_MLME_SEARCH,
582 IEEE80211_IBSS_MLME_JOINED,
583 } state;
584 };
585
586 /**
587 * struct ieee80211_if_ocb - OCB mode state
588 *
589 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
590 * @wrkq_flags: OCB deferred task action
591 * @incomplete_lock: delayed STA insertion lock
592 * @incomplete_stations: list of STAs waiting for delayed insertion
593 * @joined: indication if the interface is connected to an OCB network
594 */
595 struct ieee80211_if_ocb {
596 struct timer_list housekeeping_timer;
597 unsigned long wrkq_flags;
598
599 spinlock_t incomplete_lock;
600 struct list_head incomplete_stations;
601
602 bool joined;
603 };
604
605 /**
606 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
607 *
608 * these declarations define the interface, which enables
609 * vendor-specific mesh synchronization
610 *
611 */
612 struct ieee802_11_elems;
613 struct ieee80211_mesh_sync_ops {
614 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
615 u16 stype,
616 struct ieee80211_mgmt *mgmt,
617 struct ieee802_11_elems *elems,
618 struct ieee80211_rx_status *rx_status);
619
620 /* should be called with beacon_data under RCU read lock */
621 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata,
622 struct beacon_data *beacon);
623 /* add other framework functions here */
624 };
625
626 struct mesh_csa_settings {
627 struct rcu_head rcu_head;
628 struct cfg80211_csa_settings settings;
629 };
630
631 struct ieee80211_if_mesh {
632 struct timer_list housekeeping_timer;
633 struct timer_list mesh_path_timer;
634 struct timer_list mesh_path_root_timer;
635
636 unsigned long wrkq_flags;
637 unsigned long mbss_changed;
638
639 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
640 size_t mesh_id_len;
641 /* Active Path Selection Protocol Identifier */
642 u8 mesh_pp_id;
643 /* Active Path Selection Metric Identifier */
644 u8 mesh_pm_id;
645 /* Congestion Control Mode Identifier */
646 u8 mesh_cc_id;
647 /* Synchronization Protocol Identifier */
648 u8 mesh_sp_id;
649 /* Authentication Protocol Identifier */
650 u8 mesh_auth_id;
651 /* Local mesh Sequence Number */
652 u32 sn;
653 /* Last used PREQ ID */
654 u32 preq_id;
655 atomic_t mpaths;
656 /* Timestamp of last SN update */
657 unsigned long last_sn_update;
658 /* Time when it's ok to send next PERR */
659 unsigned long next_perr;
660 /* Timestamp of last PREQ sent */
661 unsigned long last_preq;
662 struct mesh_rmc *rmc;
663 spinlock_t mesh_preq_queue_lock;
664 struct mesh_preq_queue preq_queue;
665 int preq_queue_len;
666 struct mesh_stats mshstats;
667 struct mesh_config mshcfg;
668 atomic_t estab_plinks;
669 u32 mesh_seqnum;
670 bool accepting_plinks;
671 int num_gates;
672 struct beacon_data __rcu *beacon;
673 const u8 *ie;
674 u8 ie_len;
675 enum {
676 IEEE80211_MESH_SEC_NONE = 0x0,
677 IEEE80211_MESH_SEC_AUTHED = 0x1,
678 IEEE80211_MESH_SEC_SECURED = 0x2,
679 } security;
680 bool user_mpm;
681 /* Extensible Synchronization Framework */
682 const struct ieee80211_mesh_sync_ops *sync_ops;
683 s64 sync_offset_clockdrift_max;
684 spinlock_t sync_offset_lock;
685 bool adjusting_tbtt;
686 /* mesh power save */
687 enum nl80211_mesh_power_mode nonpeer_pm;
688 int ps_peers_light_sleep;
689 int ps_peers_deep_sleep;
690 struct ps_data ps;
691 /* Channel Switching Support */
692 struct mesh_csa_settings __rcu *csa;
693 enum {
694 IEEE80211_MESH_CSA_ROLE_NONE,
695 IEEE80211_MESH_CSA_ROLE_INIT,
696 IEEE80211_MESH_CSA_ROLE_REPEATER,
697 } csa_role;
698 u8 chsw_ttl;
699 u16 pre_value;
700
701 /* offset from skb->data while building IE */
702 int meshconf_offset;
703 };
704
705 #ifdef CONFIG_MAC80211_MESH
706 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
707 do { (msh)->mshstats.name++; } while (0)
708 #else
709 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
710 do { } while (0)
711 #endif
712
713 /**
714 * enum ieee80211_sub_if_data_flags - virtual interface flags
715 *
716 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
717 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
718 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
719 * associated stations and deliver multicast frames both
720 * back to wireless media and to the local net stack.
721 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
722 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
723 * @IEEE80211_SDATA_MU_MIMO_OWNER: indicates interface owns MU-MIMO capability
724 */
725 enum ieee80211_sub_if_data_flags {
726 IEEE80211_SDATA_ALLMULTI = BIT(0),
727 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
728 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
729 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
730 IEEE80211_SDATA_IN_DRIVER = BIT(5),
731 IEEE80211_SDATA_MU_MIMO_OWNER = BIT(6),
732 };
733
734 /**
735 * enum ieee80211_sdata_state_bits - virtual interface state bits
736 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
737 * mirrors netif_running() but is separate for interface type
738 * change handling while the interface is up
739 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
740 * mode, so queues are stopped
741 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
742 * to offchannel, reset when offchannel returns
743 */
744 enum ieee80211_sdata_state_bits {
745 SDATA_STATE_RUNNING,
746 SDATA_STATE_OFFCHANNEL,
747 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
748 };
749
750 /**
751 * enum ieee80211_chanctx_mode - channel context configuration mode
752 *
753 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
754 * multiple interfaces
755 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
756 * only by a single interface. This can be used for example for
757 * non-fixed channel IBSS.
758 */
759 enum ieee80211_chanctx_mode {
760 IEEE80211_CHANCTX_SHARED,
761 IEEE80211_CHANCTX_EXCLUSIVE
762 };
763
764 /**
765 * enum ieee80211_chanctx_replace_state - channel context replacement state
766 *
767 * This is used for channel context in-place reservations that require channel
768 * context switch/swap.
769 *
770 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
771 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
772 * by a (not yet registered) channel context pointed by %replace_ctx.
773 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
774 * replaces an existing channel context pointed to by %replace_ctx.
775 */
776 enum ieee80211_chanctx_replace_state {
777 IEEE80211_CHANCTX_REPLACE_NONE,
778 IEEE80211_CHANCTX_WILL_BE_REPLACED,
779 IEEE80211_CHANCTX_REPLACES_OTHER,
780 };
781
782 struct ieee80211_chanctx {
783 struct list_head list;
784 struct rcu_head rcu_head;
785
786 struct list_head assigned_vifs;
787 struct list_head reserved_vifs;
788
789 enum ieee80211_chanctx_replace_state replace_state;
790 struct ieee80211_chanctx *replace_ctx;
791
792 enum ieee80211_chanctx_mode mode;
793 bool driver_present;
794
795 struct ieee80211_chanctx_conf conf;
796 };
797
798 struct mac80211_qos_map {
799 struct cfg80211_qos_map qos_map;
800 struct rcu_head rcu_head;
801 };
802
803 enum txq_info_flags {
804 IEEE80211_TXQ_STOP,
805 IEEE80211_TXQ_AMPDU,
806 };
807
808 struct txq_info {
809 struct sk_buff_head queue;
810 unsigned long flags;
811
812 /* keep last! */
813 struct ieee80211_txq txq;
814 };
815
816 struct ieee80211_sub_if_data {
817 struct list_head list;
818
819 struct wireless_dev wdev;
820
821 /* keys */
822 struct list_head key_list;
823
824 /* count for keys needing tailroom space allocation */
825 int crypto_tx_tailroom_needed_cnt;
826 int crypto_tx_tailroom_pending_dec;
827 struct delayed_work dec_tailroom_needed_wk;
828
829 struct net_device *dev;
830 struct ieee80211_local *local;
831
832 unsigned int flags;
833
834 unsigned long state;
835
836 char name[IFNAMSIZ];
837
838 /* Fragment table for host-based reassembly */
839 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
840 unsigned int fragment_next;
841
842 /* TID bitmap for NoAck policy */
843 u16 noack_map;
844
845 /* bit field of ACM bits (BIT(802.1D tag)) */
846 u8 wmm_acm;
847
848 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
849 struct ieee80211_key __rcu *default_unicast_key;
850 struct ieee80211_key __rcu *default_multicast_key;
851 struct ieee80211_key __rcu *default_mgmt_key;
852
853 u16 sequence_number;
854 __be16 control_port_protocol;
855 bool control_port_no_encrypt;
856 int encrypt_headroom;
857
858 atomic_t txqs_len[IEEE80211_NUM_ACS];
859 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
860 struct mac80211_qos_map __rcu *qos_map;
861
862 struct work_struct csa_finalize_work;
863 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
864 struct cfg80211_chan_def csa_chandef;
865
866 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
867 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
868
869 /* context reservation -- protected with chanctx_mtx */
870 struct ieee80211_chanctx *reserved_chanctx;
871 struct cfg80211_chan_def reserved_chandef;
872 bool reserved_radar_required;
873 bool reserved_ready;
874
875 /* used to reconfigure hardware SM PS */
876 struct work_struct recalc_smps;
877
878 struct work_struct work;
879 struct sk_buff_head skb_queue;
880
881 u8 needed_rx_chains;
882 enum ieee80211_smps_mode smps_mode;
883
884 int user_power_level; /* in dBm */
885 int ap_power_level; /* in dBm */
886
887 bool radar_required;
888 struct delayed_work dfs_cac_timer_work;
889
890 /*
891 * AP this belongs to: self in AP mode and
892 * corresponding AP in VLAN mode, NULL for
893 * all others (might be needed later in IBSS)
894 */
895 struct ieee80211_if_ap *bss;
896
897 /* bitmap of allowed (non-MCS) rate indexes for rate control */
898 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
899
900 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
901 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
902
903 bool rc_has_vht_mcs_mask[IEEE80211_NUM_BANDS];
904 u16 rc_rateidx_vht_mcs_mask[IEEE80211_NUM_BANDS][NL80211_VHT_NSS_MAX];
905
906 union {
907 struct ieee80211_if_ap ap;
908 struct ieee80211_if_wds wds;
909 struct ieee80211_if_vlan vlan;
910 struct ieee80211_if_managed mgd;
911 struct ieee80211_if_ibss ibss;
912 struct ieee80211_if_mesh mesh;
913 struct ieee80211_if_ocb ocb;
914 u32 mntr_flags;
915 } u;
916
917 #ifdef CONFIG_MAC80211_DEBUGFS
918 struct {
919 struct dentry *subdir_stations;
920 struct dentry *default_unicast_key;
921 struct dentry *default_multicast_key;
922 struct dentry *default_mgmt_key;
923 } debugfs;
924 #endif
925
926 /* must be last, dynamically sized area in this! */
927 struct ieee80211_vif vif;
928 };
929
930 static inline
931 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
932 {
933 return container_of(p, struct ieee80211_sub_if_data, vif);
934 }
935
936 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
937 __acquires(&sdata->wdev.mtx)
938 {
939 mutex_lock(&sdata->wdev.mtx);
940 __acquire(&sdata->wdev.mtx);
941 }
942
943 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
944 __releases(&sdata->wdev.mtx)
945 {
946 mutex_unlock(&sdata->wdev.mtx);
947 __release(&sdata->wdev.mtx);
948 }
949
950 #define sdata_dereference(p, sdata) \
951 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
952
953 static inline void
954 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
955 {
956 lockdep_assert_held(&sdata->wdev.mtx);
957 }
958
959 static inline enum ieee80211_band
960 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
961 {
962 enum ieee80211_band band = IEEE80211_BAND_2GHZ;
963 struct ieee80211_chanctx_conf *chanctx_conf;
964
965 rcu_read_lock();
966 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
967 if (!WARN_ON(!chanctx_conf))
968 band = chanctx_conf->def.chan->band;
969 rcu_read_unlock();
970
971 return band;
972 }
973
974 static inline int
975 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
976 {
977 switch (chandef->width) {
978 case NL80211_CHAN_WIDTH_5:
979 return 2;
980 case NL80211_CHAN_WIDTH_10:
981 return 1;
982 default:
983 return 0;
984 }
985 }
986
987 static inline int
988 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
989 {
990 struct ieee80211_chanctx_conf *chanctx_conf;
991 int shift = 0;
992
993 rcu_read_lock();
994 chanctx_conf = rcu_dereference(vif->chanctx_conf);
995 if (chanctx_conf)
996 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
997 rcu_read_unlock();
998
999 return shift;
1000 }
1001
1002 struct ieee80211_rx_agg {
1003 u8 addr[ETH_ALEN];
1004 u16 tid;
1005 };
1006
1007 enum sdata_queue_type {
1008 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
1009 IEEE80211_SDATA_QUEUE_AGG_START = 1,
1010 IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
1011 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3,
1012 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4,
1013 };
1014
1015 enum {
1016 IEEE80211_RX_MSG = 1,
1017 IEEE80211_TX_STATUS_MSG = 2,
1018 };
1019
1020 enum queue_stop_reason {
1021 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1022 IEEE80211_QUEUE_STOP_REASON_PS,
1023 IEEE80211_QUEUE_STOP_REASON_CSA,
1024 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1025 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1026 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1027 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1028 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1029 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1030 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1031
1032 IEEE80211_QUEUE_STOP_REASONS,
1033 };
1034
1035 #ifdef CONFIG_MAC80211_LEDS
1036 struct tpt_led_trigger {
1037 char name[32];
1038 const struct ieee80211_tpt_blink *blink_table;
1039 unsigned int blink_table_len;
1040 struct timer_list timer;
1041 unsigned long prev_traffic;
1042 unsigned long tx_bytes, rx_bytes;
1043 unsigned int active, want;
1044 bool running;
1045 };
1046 #endif
1047
1048 /**
1049 * mac80211 scan flags - currently active scan mode
1050 *
1051 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1052 * well be on the operating channel
1053 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1054 * determine if we are on the operating channel or not
1055 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1056 * channel. This should not interrupt normal traffic.
1057 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1058 * that the scan completed.
1059 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1060 * a scan complete for an aborted scan.
1061 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1062 * cancelled.
1063 */
1064 enum {
1065 SCAN_SW_SCANNING,
1066 SCAN_HW_SCANNING,
1067 SCAN_ONCHANNEL_SCANNING,
1068 SCAN_COMPLETED,
1069 SCAN_ABORTED,
1070 SCAN_HW_CANCELLED,
1071 };
1072
1073 /**
1074 * enum mac80211_scan_state - scan state machine states
1075 *
1076 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1077 * determines if we should keep on scanning or switch back to the
1078 * operating channel
1079 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1080 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1081 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1082 * send out data
1083 * @SCAN_RESUME: Resume the scan and scan the next channel
1084 * @SCAN_ABORT: Abort the scan and go back to operating channel
1085 */
1086 enum mac80211_scan_state {
1087 SCAN_DECISION,
1088 SCAN_SET_CHANNEL,
1089 SCAN_SEND_PROBE,
1090 SCAN_SUSPEND,
1091 SCAN_RESUME,
1092 SCAN_ABORT,
1093 };
1094
1095 struct ieee80211_local {
1096 /* embed the driver visible part.
1097 * don't cast (use the static inlines below), but we keep
1098 * it first anyway so they become a no-op */
1099 struct ieee80211_hw hw;
1100
1101 const struct ieee80211_ops *ops;
1102
1103 /*
1104 * private workqueue to mac80211. mac80211 makes this accessible
1105 * via ieee80211_queue_work()
1106 */
1107 struct workqueue_struct *workqueue;
1108
1109 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1110 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1111 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1112 spinlock_t queue_stop_reason_lock;
1113
1114 int open_count;
1115 int monitors, cooked_mntrs;
1116 /* number of interfaces with corresponding FIF_ flags */
1117 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1118 fif_probe_req;
1119 int probe_req_reg;
1120 unsigned int filter_flags; /* FIF_* */
1121
1122 bool wiphy_ciphers_allocated;
1123
1124 bool use_chanctx;
1125
1126 /* protects the aggregated multicast list and filter calls */
1127 spinlock_t filter_lock;
1128
1129 /* used for uploading changed mc list */
1130 struct work_struct reconfig_filter;
1131
1132 /* aggregated multicast list */
1133 struct netdev_hw_addr_list mc_list;
1134
1135 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1136
1137 /*
1138 * suspended is true if we finished all the suspend _and_ we have
1139 * not yet come up from resume. This is to be used by mac80211
1140 * to ensure driver sanity during suspend and mac80211's own
1141 * sanity. It can eventually be used for WoW as well.
1142 */
1143 bool suspended;
1144
1145 /*
1146 * Resuming is true while suspended, but when we're reprogramming the
1147 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1148 * again even though some other parts of the stack are still suspended
1149 * and we still drop received frames to avoid waking the stack.
1150 */
1151 bool resuming;
1152
1153 /*
1154 * quiescing is true during the suspend process _only_ to
1155 * ease timer cancelling etc.
1156 */
1157 bool quiescing;
1158
1159 /* device is started */
1160 bool started;
1161
1162 /* device is during a HW reconfig */
1163 bool in_reconfig;
1164
1165 /* wowlan is enabled -- don't reconfig on resume */
1166 bool wowlan;
1167
1168 struct work_struct radar_detected_work;
1169
1170 /* number of RX chains the hardware has */
1171 u8 rx_chains;
1172
1173 int tx_headroom; /* required headroom for hardware/radiotap */
1174
1175 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1176 * added to skb_queue will be processed, but frames in
1177 * skb_queue_unreliable may be dropped if the total length of these
1178 * queues increases over the limit. */
1179 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1180 struct tasklet_struct tasklet;
1181 struct sk_buff_head skb_queue;
1182 struct sk_buff_head skb_queue_unreliable;
1183
1184 spinlock_t rx_path_lock;
1185
1186 /* Station data */
1187 /*
1188 * The mutex only protects the list, hash table and
1189 * counter, reads are done with RCU.
1190 */
1191 struct mutex sta_mtx;
1192 spinlock_t tim_lock;
1193 unsigned long num_sta;
1194 struct list_head sta_list;
1195 struct rhashtable sta_hash;
1196 struct timer_list sta_cleanup;
1197 int sta_generation;
1198
1199 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1200 struct tasklet_struct tx_pending_tasklet;
1201
1202 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1203
1204 /* number of interfaces with allmulti RX */
1205 atomic_t iff_allmultis;
1206
1207 struct rate_control_ref *rate_ctrl;
1208
1209 struct crypto_cipher *wep_tx_tfm;
1210 struct crypto_cipher *wep_rx_tfm;
1211 u32 wep_iv;
1212
1213 /* see iface.c */
1214 struct list_head interfaces;
1215 struct mutex iflist_mtx;
1216
1217 /*
1218 * Key mutex, protects sdata's key_list and sta_info's
1219 * key pointers (write access, they're RCU.)
1220 */
1221 struct mutex key_mtx;
1222
1223 /* mutex for scan and work locking */
1224 struct mutex mtx;
1225
1226 /* Scanning and BSS list */
1227 unsigned long scanning;
1228 struct cfg80211_ssid scan_ssid;
1229 struct cfg80211_scan_request *int_scan_req;
1230 struct cfg80211_scan_request __rcu *scan_req;
1231 struct ieee80211_scan_request *hw_scan_req;
1232 struct cfg80211_chan_def scan_chandef;
1233 enum ieee80211_band hw_scan_band;
1234 int scan_channel_idx;
1235 int scan_ies_len;
1236 int hw_scan_ies_bufsize;
1237
1238 struct work_struct sched_scan_stopped_work;
1239 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1240 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1241 u8 scan_addr[ETH_ALEN];
1242
1243 unsigned long leave_oper_channel_time;
1244 enum mac80211_scan_state next_scan_state;
1245 struct delayed_work scan_work;
1246 struct ieee80211_sub_if_data __rcu *scan_sdata;
1247 /* For backward compatibility only -- do not use */
1248 struct cfg80211_chan_def _oper_chandef;
1249
1250 /* Temporary remain-on-channel for off-channel operations */
1251 struct ieee80211_channel *tmp_channel;
1252
1253 /* channel contexts */
1254 struct list_head chanctx_list;
1255 struct mutex chanctx_mtx;
1256
1257 #ifdef CONFIG_MAC80211_LEDS
1258 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1259 struct led_trigger tpt_led;
1260 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1261 atomic_t radio_led_active, tpt_led_active;
1262 struct tpt_led_trigger *tpt_led_trigger;
1263 #endif
1264
1265 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1266 /* SNMP counters */
1267 /* dot11CountersTable */
1268 u32 dot11TransmittedFragmentCount;
1269 u32 dot11MulticastTransmittedFrameCount;
1270 u32 dot11FailedCount;
1271 u32 dot11RetryCount;
1272 u32 dot11MultipleRetryCount;
1273 u32 dot11FrameDuplicateCount;
1274 u32 dot11ReceivedFragmentCount;
1275 u32 dot11MulticastReceivedFrameCount;
1276 u32 dot11TransmittedFrameCount;
1277
1278 /* TX/RX handler statistics */
1279 unsigned int tx_handlers_drop;
1280 unsigned int tx_handlers_queued;
1281 unsigned int tx_handlers_drop_wep;
1282 unsigned int tx_handlers_drop_not_assoc;
1283 unsigned int tx_handlers_drop_unauth_port;
1284 unsigned int rx_handlers_drop;
1285 unsigned int rx_handlers_queued;
1286 unsigned int rx_handlers_drop_nullfunc;
1287 unsigned int rx_handlers_drop_defrag;
1288 unsigned int tx_expand_skb_head;
1289 unsigned int tx_expand_skb_head_cloned;
1290 unsigned int rx_expand_skb_head_defrag;
1291 unsigned int rx_handlers_fragments;
1292 unsigned int tx_status_drop;
1293 #define I802_DEBUG_INC(c) (c)++
1294 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1295 #define I802_DEBUG_INC(c) do { } while (0)
1296 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1297
1298
1299 int total_ps_buffered; /* total number of all buffered unicast and
1300 * multicast packets for power saving stations
1301 */
1302
1303 bool pspolling;
1304 bool offchannel_ps_enabled;
1305 /*
1306 * PS can only be enabled when we have exactly one managed
1307 * interface (and monitors) in PS, this then points there.
1308 */
1309 struct ieee80211_sub_if_data *ps_sdata;
1310 struct work_struct dynamic_ps_enable_work;
1311 struct work_struct dynamic_ps_disable_work;
1312 struct timer_list dynamic_ps_timer;
1313 struct notifier_block ifa_notifier;
1314 struct notifier_block ifa6_notifier;
1315
1316 /*
1317 * The dynamic ps timeout configured from user space via WEXT -
1318 * this will override whatever chosen by mac80211 internally.
1319 */
1320 int dynamic_ps_forced_timeout;
1321
1322 int user_power_level; /* in dBm, for all interfaces */
1323
1324 enum ieee80211_smps_mode smps_mode;
1325
1326 struct work_struct restart_work;
1327
1328 #ifdef CONFIG_MAC80211_DEBUGFS
1329 struct local_debugfsdentries {
1330 struct dentry *rcdir;
1331 struct dentry *keys;
1332 } debugfs;
1333 #endif
1334
1335 /*
1336 * Remain-on-channel support
1337 */
1338 struct list_head roc_list;
1339 struct work_struct hw_roc_start, hw_roc_done;
1340 unsigned long hw_roc_start_time;
1341 u64 roc_cookie_counter;
1342
1343 struct idr ack_status_frames;
1344 spinlock_t ack_status_lock;
1345
1346 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1347
1348 /* virtual monitor interface */
1349 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1350 struct cfg80211_chan_def monitor_chandef;
1351
1352 /* extended capabilities provided by mac80211 */
1353 u8 ext_capa[8];
1354
1355 /* TDLS channel switch */
1356 struct work_struct tdls_chsw_work;
1357 struct sk_buff_head skb_queue_tdls_chsw;
1358 };
1359
1360 static inline struct ieee80211_sub_if_data *
1361 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1362 {
1363 return netdev_priv(dev);
1364 }
1365
1366 static inline struct ieee80211_sub_if_data *
1367 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1368 {
1369 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1370 }
1371
1372 /* this struct represents 802.11n's RA/TID combination */
1373 struct ieee80211_ra_tid {
1374 u8 ra[ETH_ALEN];
1375 u16 tid;
1376 };
1377
1378 /* this struct holds the value parsing from channel switch IE */
1379 struct ieee80211_csa_ie {
1380 struct cfg80211_chan_def chandef;
1381 u8 mode;
1382 u8 count;
1383 u8 ttl;
1384 u16 pre_value;
1385 };
1386
1387 /* Parsed Information Elements */
1388 struct ieee802_11_elems {
1389 const u8 *ie_start;
1390 size_t total_len;
1391
1392 /* pointers to IEs */
1393 const struct ieee80211_tdls_lnkie *lnk_id;
1394 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1395 const u8 *ext_capab;
1396 const u8 *ssid;
1397 const u8 *supp_rates;
1398 const u8 *ds_params;
1399 const struct ieee80211_tim_ie *tim;
1400 const u8 *challenge;
1401 const u8 *rsn;
1402 const u8 *erp_info;
1403 const u8 *ext_supp_rates;
1404 const u8 *wmm_info;
1405 const u8 *wmm_param;
1406 const struct ieee80211_ht_cap *ht_cap_elem;
1407 const struct ieee80211_ht_operation *ht_operation;
1408 const struct ieee80211_vht_cap *vht_cap_elem;
1409 const struct ieee80211_vht_operation *vht_operation;
1410 const struct ieee80211_meshconf_ie *mesh_config;
1411 const u8 *mesh_id;
1412 const u8 *peering;
1413 const __le16 *awake_window;
1414 const u8 *preq;
1415 const u8 *prep;
1416 const u8 *perr;
1417 const struct ieee80211_rann_ie *rann;
1418 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1419 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1420 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1421 const u8 *country_elem;
1422 const u8 *pwr_constr_elem;
1423 const u8 *cisco_dtpc_elem;
1424 const struct ieee80211_timeout_interval_ie *timeout_int;
1425 const u8 *opmode_notif;
1426 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1427 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1428
1429 /* length of them, respectively */
1430 u8 ext_capab_len;
1431 u8 ssid_len;
1432 u8 supp_rates_len;
1433 u8 tim_len;
1434 u8 challenge_len;
1435 u8 rsn_len;
1436 u8 ext_supp_rates_len;
1437 u8 wmm_info_len;
1438 u8 wmm_param_len;
1439 u8 mesh_id_len;
1440 u8 peering_len;
1441 u8 preq_len;
1442 u8 prep_len;
1443 u8 perr_len;
1444 u8 country_elem_len;
1445
1446 /* whether a parse error occurred while retrieving these elements */
1447 bool parse_error;
1448 };
1449
1450 static inline struct ieee80211_local *hw_to_local(
1451 struct ieee80211_hw *hw)
1452 {
1453 return container_of(hw, struct ieee80211_local, hw);
1454 }
1455
1456 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1457 {
1458 return container_of(txq, struct txq_info, txq);
1459 }
1460
1461 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1462 {
1463 return ether_addr_equal(raddr, addr) ||
1464 is_broadcast_ether_addr(raddr);
1465 }
1466
1467 static inline bool
1468 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1469 {
1470 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1471 status->flag & RX_FLAG_MACTIME_END);
1472 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1473 }
1474
1475 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1476 struct ieee80211_rx_status *status,
1477 unsigned int mpdu_len,
1478 unsigned int mpdu_offset);
1479 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1480 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1481 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1482 u32 changed);
1483 void ieee80211_configure_filter(struct ieee80211_local *local);
1484 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1485
1486 /* STA code */
1487 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1488 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1489 struct cfg80211_auth_request *req);
1490 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1491 struct cfg80211_assoc_request *req);
1492 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1493 struct cfg80211_deauth_request *req);
1494 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1495 struct cfg80211_disassoc_request *req);
1496 void ieee80211_send_pspoll(struct ieee80211_local *local,
1497 struct ieee80211_sub_if_data *sdata);
1498 void ieee80211_recalc_ps(struct ieee80211_local *local);
1499 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1500 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1501 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1502 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1503 struct sk_buff *skb);
1504 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1505 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1506 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1507 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1508 __le16 fc, bool acked);
1509 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1510 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1511 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1512
1513 /* IBSS code */
1514 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1515 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1516 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1517 const u8 *bssid, const u8 *addr, u32 supp_rates);
1518 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1519 struct cfg80211_ibss_params *params);
1520 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1521 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1522 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1523 struct sk_buff *skb);
1524 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1525 struct cfg80211_csa_settings *csa_settings);
1526 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1527 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1528
1529 /* OCB code */
1530 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1531 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1532 const u8 *bssid, const u8 *addr, u32 supp_rates);
1533 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1534 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1535 struct ocb_setup *setup);
1536 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1537
1538 /* mesh code */
1539 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1540 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1541 struct sk_buff *skb);
1542 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1543 struct cfg80211_csa_settings *csa_settings);
1544 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1545
1546 /* scan/BSS handling */
1547 void ieee80211_scan_work(struct work_struct *work);
1548 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1549 const u8 *ssid, u8 ssid_len,
1550 struct ieee80211_channel **channels,
1551 unsigned int n_channels,
1552 enum nl80211_bss_scan_width scan_width);
1553 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1554 struct cfg80211_scan_request *req);
1555 void ieee80211_scan_cancel(struct ieee80211_local *local);
1556 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1557 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1558
1559 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1560 struct ieee80211_bss *
1561 ieee80211_bss_info_update(struct ieee80211_local *local,
1562 struct ieee80211_rx_status *rx_status,
1563 struct ieee80211_mgmt *mgmt,
1564 size_t len,
1565 struct ieee802_11_elems *elems,
1566 struct ieee80211_channel *channel);
1567 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1568 struct ieee80211_bss *bss);
1569
1570 /* scheduled scan handling */
1571 int
1572 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1573 struct cfg80211_sched_scan_request *req);
1574 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1575 struct cfg80211_sched_scan_request *req);
1576 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1577 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1578 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1579
1580 /* off-channel helpers */
1581 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1582 void ieee80211_offchannel_return(struct ieee80211_local *local);
1583 void ieee80211_roc_setup(struct ieee80211_local *local);
1584 void ieee80211_start_next_roc(struct ieee80211_local *local);
1585 void ieee80211_roc_purge(struct ieee80211_local *local,
1586 struct ieee80211_sub_if_data *sdata);
1587 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1588 void ieee80211_sw_roc_work(struct work_struct *work);
1589 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1590
1591 /* channel switch handling */
1592 void ieee80211_csa_finalize_work(struct work_struct *work);
1593 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1594 struct cfg80211_csa_settings *params);
1595
1596 /* interface handling */
1597 int ieee80211_iface_init(void);
1598 void ieee80211_iface_exit(void);
1599 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1600 unsigned char name_assign_type,
1601 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1602 struct vif_params *params);
1603 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1604 enum nl80211_iftype type);
1605 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1606 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1607 u32 ieee80211_idle_off(struct ieee80211_local *local);
1608 void ieee80211_recalc_idle(struct ieee80211_local *local);
1609 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1610 const int offset);
1611 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1612 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1613 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1614 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1615
1616 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1617 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1618 bool update_bss);
1619
1620 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1621 {
1622 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1623 }
1624
1625 /* tx handling */
1626 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1627 void ieee80211_tx_pending(unsigned long data);
1628 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1629 struct net_device *dev);
1630 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1631 struct net_device *dev);
1632 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1633 struct net_device *dev,
1634 u32 info_flags);
1635 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1636 struct sk_buff_head *skbs);
1637 struct sk_buff *
1638 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1639 struct sk_buff *skb, u32 info_flags);
1640 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1641 struct ieee80211_supported_band *sband,
1642 int retry_count, int shift, bool send_to_cooked);
1643
1644 void ieee80211_check_fast_xmit(struct sta_info *sta);
1645 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1646 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1647 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1648
1649 /* HT */
1650 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1651 struct ieee80211_sta_ht_cap *ht_cap);
1652 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1653 struct ieee80211_supported_band *sband,
1654 const struct ieee80211_ht_cap *ht_cap_ie,
1655 struct sta_info *sta);
1656 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1657 const u8 *da, u16 tid,
1658 u16 initiator, u16 reason_code);
1659 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1660 enum ieee80211_smps_mode smps, const u8 *da,
1661 const u8 *bssid);
1662 void ieee80211_request_smps_ap_work(struct work_struct *work);
1663 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1664 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1665 enum ieee80211_smps_mode smps_mode_new);
1666
1667 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1668 u16 initiator, u16 reason, bool stop);
1669 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1670 u16 initiator, u16 reason, bool stop);
1671 void __ieee80211_start_rx_ba_session(struct sta_info *sta,
1672 u8 dialog_token, u16 timeout,
1673 u16 start_seq_num, u16 ba_policy, u16 tid,
1674 u16 buf_size, bool tx, bool auto_seq);
1675 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1676 enum ieee80211_agg_stop_reason reason);
1677 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1678 struct sta_info *sta,
1679 struct ieee80211_mgmt *mgmt, size_t len);
1680 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1681 struct sta_info *sta,
1682 struct ieee80211_mgmt *mgmt,
1683 size_t len);
1684 void ieee80211_process_addba_request(struct ieee80211_local *local,
1685 struct sta_info *sta,
1686 struct ieee80211_mgmt *mgmt,
1687 size_t len);
1688
1689 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1690 enum ieee80211_agg_stop_reason reason);
1691 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1692 enum ieee80211_agg_stop_reason reason);
1693 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1694 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1695 void ieee80211_ba_session_work(struct work_struct *work);
1696 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1697 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1698
1699 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1700
1701 /* VHT */
1702 void
1703 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1704 struct ieee80211_supported_band *sband,
1705 const struct ieee80211_vht_cap *vht_cap_ie,
1706 struct sta_info *sta);
1707 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1708 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1709 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1710 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1711 struct sta_info *sta, u8 opmode,
1712 enum ieee80211_band band, bool nss_only);
1713 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1714 struct sta_info *sta, u8 opmode,
1715 enum ieee80211_band band, bool nss_only);
1716 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1717 struct ieee80211_sta_vht_cap *vht_cap);
1718 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
1719 u16 vht_mask[NL80211_VHT_NSS_MAX]);
1720
1721 /* Spectrum management */
1722 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1723 struct ieee80211_mgmt *mgmt,
1724 size_t len);
1725 /**
1726 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1727 * @sdata: the sdata of the interface which has received the frame
1728 * @elems: parsed 802.11 elements received with the frame
1729 * @current_band: indicates the current band
1730 * @sta_flags: contains information about own capabilities and restrictions
1731 * to decide which channel switch announcements can be accepted. Only the
1732 * following subset of &enum ieee80211_sta_flags are evaluated:
1733 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1734 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1735 * %IEEE80211_STA_DISABLE_160MHZ.
1736 * @bssid: the currently connected bssid (for reporting)
1737 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1738 All of them will be filled with if success only.
1739 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1740 */
1741 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1742 struct ieee802_11_elems *elems,
1743 enum ieee80211_band current_band,
1744 u32 sta_flags, u8 *bssid,
1745 struct ieee80211_csa_ie *csa_ie);
1746
1747 /* Suspend/resume and hw reconfiguration */
1748 int ieee80211_reconfig(struct ieee80211_local *local);
1749 void ieee80211_stop_device(struct ieee80211_local *local);
1750
1751 int __ieee80211_suspend(struct ieee80211_hw *hw,
1752 struct cfg80211_wowlan *wowlan);
1753
1754 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1755 {
1756 struct ieee80211_local *local = hw_to_local(hw);
1757
1758 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
1759 !test_bit(SCAN_COMPLETED, &local->scanning),
1760 "%s: resume with hardware scan still in progress\n",
1761 wiphy_name(hw->wiphy));
1762
1763 return ieee80211_reconfig(hw_to_local(hw));
1764 }
1765
1766 /* utility functions/constants */
1767 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1768 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1769 int rate, int erp, int short_preamble,
1770 int shift);
1771 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1772 bool bss_notify, bool enable_qos);
1773 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
1774 struct sta_info *sta, struct sk_buff *skb);
1775
1776 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1777 struct sk_buff *skb, int tid,
1778 enum ieee80211_band band);
1779
1780 static inline void
1781 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1782 struct sk_buff *skb, int tid,
1783 enum ieee80211_band band)
1784 {
1785 rcu_read_lock();
1786 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1787 rcu_read_unlock();
1788 }
1789
1790 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1791 struct sk_buff *skb, int tid)
1792 {
1793 struct ieee80211_chanctx_conf *chanctx_conf;
1794
1795 rcu_read_lock();
1796 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1797 if (WARN_ON(!chanctx_conf)) {
1798 rcu_read_unlock();
1799 kfree_skb(skb);
1800 return;
1801 }
1802
1803 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1804 chanctx_conf->def.chan->band);
1805 rcu_read_unlock();
1806 }
1807
1808 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1809 struct sk_buff *skb)
1810 {
1811 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1812 ieee80211_tx_skb_tid(sdata, skb, 7);
1813 }
1814
1815 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1816 struct ieee802_11_elems *elems,
1817 u64 filter, u32 crc);
1818 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1819 bool action,
1820 struct ieee802_11_elems *elems)
1821 {
1822 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1823 }
1824
1825 static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames)
1826 {
1827 struct sk_buff *tail = skb_peek_tail(frames);
1828 struct ieee80211_rx_status *status;
1829
1830 if (!tail)
1831 return false;
1832
1833 status = IEEE80211_SKB_RXCB(tail);
1834 if (status->flag & RX_FLAG_AMSDU_MORE)
1835 return false;
1836
1837 return true;
1838 }
1839
1840 extern const int ieee802_1d_to_ac[8];
1841
1842 static inline int ieee80211_ac_from_tid(int tid)
1843 {
1844 return ieee802_1d_to_ac[tid & 7];
1845 }
1846
1847 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1848 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1849 void ieee80211_dynamic_ps_timer(unsigned long data);
1850 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1851 struct ieee80211_sub_if_data *sdata,
1852 bool powersave);
1853 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1854 struct ieee80211_hdr *hdr);
1855 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1856 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
1857
1858 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1859 unsigned long queues,
1860 enum queue_stop_reason reason,
1861 bool refcounted);
1862 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1863 struct ieee80211_sub_if_data *sdata,
1864 enum queue_stop_reason reason);
1865 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1866 struct ieee80211_sub_if_data *sdata,
1867 enum queue_stop_reason reason);
1868 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1869 unsigned long queues,
1870 enum queue_stop_reason reason,
1871 bool refcounted);
1872 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1873 enum queue_stop_reason reason,
1874 bool refcounted);
1875 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1876 enum queue_stop_reason reason,
1877 bool refcounted);
1878 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1879 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1880 struct sk_buff *skb);
1881 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1882 struct sk_buff_head *skbs);
1883 void ieee80211_flush_queues(struct ieee80211_local *local,
1884 struct ieee80211_sub_if_data *sdata, bool drop);
1885 void __ieee80211_flush_queues(struct ieee80211_local *local,
1886 struct ieee80211_sub_if_data *sdata,
1887 unsigned int queues, bool drop);
1888
1889 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
1890 {
1891 /*
1892 * If quiescing is set, we are racing with __ieee80211_suspend.
1893 * __ieee80211_suspend flushes the workers after setting quiescing,
1894 * and we check quiescing / suspended before enqueing new workers.
1895 * We should abort the worker to avoid the races below.
1896 */
1897 if (local->quiescing)
1898 return false;
1899
1900 /*
1901 * We might already be suspended if the following scenario occurs:
1902 * __ieee80211_suspend Control path
1903 *
1904 * if (local->quiescing)
1905 * return;
1906 * local->quiescing = true;
1907 * flush_workqueue();
1908 * queue_work(...);
1909 * local->suspended = true;
1910 * local->quiescing = false;
1911 * worker starts running...
1912 */
1913 if (local->suspended)
1914 return false;
1915
1916 return true;
1917 }
1918
1919 void ieee80211_init_tx_queue(struct ieee80211_sub_if_data *sdata,
1920 struct sta_info *sta,
1921 struct txq_info *txq, int tid);
1922 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1923 u16 transaction, u16 auth_alg, u16 status,
1924 const u8 *extra, size_t extra_len, const u8 *bssid,
1925 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1926 u32 tx_flags);
1927 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1928 const u8 *bssid, u16 stype, u16 reason,
1929 bool send_frame, u8 *frame_buf);
1930 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1931 size_t buffer_len,
1932 struct ieee80211_scan_ies *ie_desc,
1933 const u8 *ie, size_t ie_len,
1934 u8 bands_used, u32 *rate_masks,
1935 struct cfg80211_chan_def *chandef);
1936 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1937 const u8 *src, const u8 *dst,
1938 u32 ratemask,
1939 struct ieee80211_channel *chan,
1940 const u8 *ssid, size_t ssid_len,
1941 const u8 *ie, size_t ie_len,
1942 bool directed);
1943 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
1944 const u8 *src, const u8 *dst,
1945 const u8 *ssid, size_t ssid_len,
1946 const u8 *ie, size_t ie_len,
1947 u32 ratemask, bool directed, u32 tx_flags,
1948 struct ieee80211_channel *channel, bool scan);
1949
1950 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1951 struct ieee802_11_elems *elems,
1952 enum ieee80211_band band, u32 *basic_rates);
1953 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1954 enum ieee80211_smps_mode smps_mode);
1955 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1956 enum ieee80211_smps_mode smps_mode);
1957 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1958 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
1959
1960 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1961 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1962 u16 cap);
1963 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1964 const struct cfg80211_chan_def *chandef,
1965 u16 prot_mode, bool rifs_mode);
1966 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1967 u32 cap);
1968 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1969 const struct cfg80211_chan_def *chandef);
1970 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1971 const struct ieee80211_supported_band *sband,
1972 const u8 *srates, int srates_len, u32 *rates);
1973 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1974 struct sk_buff *skb, bool need_basic,
1975 enum ieee80211_band band);
1976 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1977 struct sk_buff *skb, bool need_basic,
1978 enum ieee80211_band band);
1979 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
1980
1981 /* channel management */
1982 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1983 const struct ieee80211_ht_operation *ht_oper,
1984 struct cfg80211_chan_def *chandef);
1985 void ieee80211_vht_oper_to_chandef(struct ieee80211_channel *control_chan,
1986 const struct ieee80211_vht_operation *oper,
1987 struct cfg80211_chan_def *chandef);
1988 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
1989
1990 int __must_check
1991 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1992 const struct cfg80211_chan_def *chandef,
1993 enum ieee80211_chanctx_mode mode);
1994 int __must_check
1995 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
1996 const struct cfg80211_chan_def *chandef,
1997 enum ieee80211_chanctx_mode mode,
1998 bool radar_required);
1999 int __must_check
2000 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2001 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2002
2003 int __must_check
2004 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2005 const struct cfg80211_chan_def *chandef,
2006 u32 *changed);
2007 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2008 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2009 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2010 bool clear);
2011 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2012 struct ieee80211_chanctx *ctx);
2013
2014 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2015 struct ieee80211_chanctx *chanctx);
2016 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2017 struct ieee80211_chanctx *ctx);
2018 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2019
2020 void ieee80211_dfs_cac_timer(unsigned long data);
2021 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2022 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2023 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2024 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2025 struct cfg80211_csa_settings *csa_settings);
2026
2027 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2028 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2029 const struct ieee80211_cipher_scheme *
2030 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2031 enum nl80211_iftype iftype);
2032 int ieee80211_cs_headroom(struct ieee80211_local *local,
2033 struct cfg80211_crypto_settings *crypto,
2034 enum nl80211_iftype iftype);
2035 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2036 struct ieee80211_sub_if_data *sdata);
2037 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2038 const struct cfg80211_chan_def *chandef,
2039 enum ieee80211_chanctx_mode chanmode,
2040 u8 radar_detect);
2041 int ieee80211_max_num_channels(struct ieee80211_local *local);
2042 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta);
2043 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2044 struct ieee80211_chanctx *ctx);
2045
2046 /* TDLS */
2047 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2048 const u8 *peer, u8 action_code, u8 dialog_token,
2049 u16 status_code, u32 peer_capability,
2050 bool initiator, const u8 *extra_ies,
2051 size_t extra_ies_len);
2052 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2053 const u8 *peer, enum nl80211_tdls_operation oper);
2054 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2055 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2056 const u8 *addr, u8 oper_class,
2057 struct cfg80211_chan_def *chandef);
2058 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2059 struct net_device *dev,
2060 const u8 *addr);
2061 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2062 void ieee80211_tdls_chsw_work(struct work_struct *wk);
2063
2064 extern const struct ethtool_ops ieee80211_ethtool_ops;
2065
2066 #ifdef CONFIG_MAC80211_NOINLINE
2067 #define debug_noinline noinline
2068 #else
2069 #define debug_noinline
2070 #endif
2071
2072 #endif /* IEEE80211_I_H */
(deprecated) Btrfs devel tree