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[deliverable/linux.git] / net / mac80211 / ieee80211_i.h
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
329 struct ieee80211_sub_if_data *sdata;
330
331 struct ieee80211_channel *chan;
332
333 bool started, abort, hw_begun, notified;
334 bool on_channel;
335
336 unsigned long start_time;
337
338 u32 duration, req_duration;
339 struct sk_buff *frame;
340 u64 cookie, mgmt_tx_cookie;
341 enum ieee80211_roc_type type;
342 };
343
344 /* flags used in struct ieee80211_if_managed.flags */
345 enum ieee80211_sta_flags {
346 IEEE80211_STA_CONNECTION_POLL = BIT(1),
347 IEEE80211_STA_CONTROL_PORT = BIT(2),
348 IEEE80211_STA_DISABLE_HT = BIT(4),
349 IEEE80211_STA_MFP_ENABLED = BIT(6),
350 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
351 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
352 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
353 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
354 IEEE80211_STA_DISABLE_VHT = BIT(11),
355 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
356 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
357 IEEE80211_STA_DISABLE_WMM = BIT(14),
358 IEEE80211_STA_ENABLE_RRM = BIT(15),
359 };
360
361 struct ieee80211_mgd_auth_data {
362 struct cfg80211_bss *bss;
363 unsigned long timeout;
364 int tries;
365 u16 algorithm, expected_transaction;
366
367 u8 key[WLAN_KEY_LEN_WEP104];
368 u8 key_len, key_idx;
369 bool done;
370 bool timeout_started;
371
372 u16 sae_trans, sae_status;
373 size_t data_len;
374 u8 data[];
375 };
376
377 struct ieee80211_mgd_assoc_data {
378 struct cfg80211_bss *bss;
379 const u8 *supp_rates;
380
381 unsigned long timeout;
382 int tries;
383
384 u16 capability;
385 u8 prev_bssid[ETH_ALEN];
386 u8 ssid[IEEE80211_MAX_SSID_LEN];
387 u8 ssid_len;
388 u8 supp_rates_len;
389 bool wmm, uapsd;
390 bool need_beacon;
391 bool synced;
392 bool timeout_started;
393
394 u8 ap_ht_param;
395
396 struct ieee80211_vht_cap ap_vht_cap;
397
398 size_t ie_len;
399 u8 ie[];
400 };
401
402 struct ieee80211_sta_tx_tspec {
403 /* timestamp of the first packet in the time slice */
404 unsigned long time_slice_start;
405
406 u32 admitted_time; /* in usecs, unlike over the air */
407 u8 tsid;
408 s8 up; /* signed to be able to invalidate with -1 during teardown */
409
410 /* consumed TX time in microseconds in the time slice */
411 u32 consumed_tx_time;
412 enum {
413 TX_TSPEC_ACTION_NONE = 0,
414 TX_TSPEC_ACTION_DOWNGRADE,
415 TX_TSPEC_ACTION_STOP_DOWNGRADE,
416 } action;
417 bool downgraded;
418 };
419
420 DECLARE_EWMA(beacon_signal, 16, 4)
421
422 struct ieee80211_if_managed {
423 struct timer_list timer;
424 struct timer_list conn_mon_timer;
425 struct timer_list bcn_mon_timer;
426 struct timer_list chswitch_timer;
427 struct work_struct monitor_work;
428 struct work_struct chswitch_work;
429 struct work_struct beacon_connection_loss_work;
430 struct work_struct csa_connection_drop_work;
431
432 unsigned long beacon_timeout;
433 unsigned long probe_timeout;
434 int probe_send_count;
435 bool nullfunc_failed;
436 bool connection_loss;
437
438 struct cfg80211_bss *associated;
439 struct ieee80211_mgd_auth_data *auth_data;
440 struct ieee80211_mgd_assoc_data *assoc_data;
441
442 u8 bssid[ETH_ALEN];
443
444 u16 aid;
445
446 bool powersave; /* powersave requested for this iface */
447 bool broken_ap; /* AP is broken -- turn off powersave */
448 bool have_beacon;
449 u8 dtim_period;
450 enum ieee80211_smps_mode req_smps, /* requested smps mode */
451 driver_smps_mode; /* smps mode request */
452
453 struct work_struct request_smps_work;
454
455 unsigned int flags;
456
457 bool csa_waiting_bcn;
458 bool csa_ignored_same_chan;
459
460 bool beacon_crc_valid;
461 u32 beacon_crc;
462
463 bool status_acked;
464 bool status_received;
465 __le16 status_fc;
466
467 enum {
468 IEEE80211_MFP_DISABLED,
469 IEEE80211_MFP_OPTIONAL,
470 IEEE80211_MFP_REQUIRED
471 } mfp; /* management frame protection */
472
473 /*
474 * Bitmask of enabled u-apsd queues,
475 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
476 * to take effect.
477 */
478 unsigned int uapsd_queues;
479
480 /*
481 * Maximum number of buffered frames AP can deliver during a
482 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
483 * Needs a new association to take effect.
484 */
485 unsigned int uapsd_max_sp_len;
486
487 int wmm_last_param_set;
488
489 u8 use_4addr;
490
491 s16 p2p_noa_index;
492
493 struct ewma_beacon_signal ave_beacon_signal;
494
495 /*
496 * Number of Beacon frames used in ave_beacon_signal. This can be used
497 * to avoid generating less reliable cqm events that would be based
498 * only on couple of received frames.
499 */
500 unsigned int count_beacon_signal;
501
502 /* Number of times beacon loss was invoked. */
503 unsigned int beacon_loss_count;
504
505 /*
506 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
507 * that triggered a cqm event. 0 indicates that no event has been
508 * generated for the current association.
509 */
510 int last_cqm_event_signal;
511
512 /*
513 * State variables for keeping track of RSSI of the AP currently
514 * connected to and informing driver when RSSI has gone
515 * below/above a certain threshold.
516 */
517 int rssi_min_thold, rssi_max_thold;
518 int last_ave_beacon_signal;
519
520 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
521 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
522 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
523 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
524
525 /* TDLS support */
526 u8 tdls_peer[ETH_ALEN] __aligned(2);
527 struct delayed_work tdls_peer_del_work;
528 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
529 struct sk_buff *teardown_skb; /* A copy to send through the AP */
530 spinlock_t teardown_lock; /* To lock changing teardown_skb */
531 bool tdls_chan_switch_prohibited;
532 bool tdls_wider_bw_prohibited;
533
534 /* WMM-AC TSPEC support */
535 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
536 /* Use a separate work struct so that we can do something here
537 * while the sdata->work is flushing the queues, for example.
538 * otherwise, in scenarios where we hardly get any traffic out
539 * on the BE queue, but there's a lot of VO traffic, we might
540 * get stuck in a downgraded situation and flush takes forever.
541 */
542 struct delayed_work tx_tspec_wk;
543 };
544
545 struct ieee80211_if_ibss {
546 struct timer_list timer;
547 struct work_struct csa_connection_drop_work;
548
549 unsigned long last_scan_completed;
550
551 u32 basic_rates;
552
553 bool fixed_bssid;
554 bool fixed_channel;
555 bool privacy;
556
557 bool control_port;
558 bool userspace_handles_dfs;
559
560 u8 bssid[ETH_ALEN] __aligned(2);
561 u8 ssid[IEEE80211_MAX_SSID_LEN];
562 u8 ssid_len, ie_len;
563 u8 *ie;
564 struct cfg80211_chan_def chandef;
565
566 unsigned long ibss_join_req;
567 /* probe response/beacon for IBSS */
568 struct beacon_data __rcu *presp;
569
570 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
571 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
572
573 spinlock_t incomplete_lock;
574 struct list_head incomplete_stations;
575
576 enum {
577 IEEE80211_IBSS_MLME_SEARCH,
578 IEEE80211_IBSS_MLME_JOINED,
579 } state;
580 };
581
582 /**
583 * struct ieee80211_if_ocb - OCB mode state
584 *
585 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
586 * @wrkq_flags: OCB deferred task action
587 * @incomplete_lock: delayed STA insertion lock
588 * @incomplete_stations: list of STAs waiting for delayed insertion
589 * @joined: indication if the interface is connected to an OCB network
590 */
591 struct ieee80211_if_ocb {
592 struct timer_list housekeeping_timer;
593 unsigned long wrkq_flags;
594
595 spinlock_t incomplete_lock;
596 struct list_head incomplete_stations;
597
598 bool joined;
599 };
600
601 /**
602 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
603 *
604 * these declarations define the interface, which enables
605 * vendor-specific mesh synchronization
606 *
607 */
608 struct ieee802_11_elems;
609 struct ieee80211_mesh_sync_ops {
610 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
611 u16 stype,
612 struct ieee80211_mgmt *mgmt,
613 struct ieee802_11_elems *elems,
614 struct ieee80211_rx_status *rx_status);
615
616 /* should be called with beacon_data under RCU read lock */
617 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata,
618 struct beacon_data *beacon);
619 /* add other framework functions here */
620 };
621
622 struct mesh_csa_settings {
623 struct rcu_head rcu_head;
624 struct cfg80211_csa_settings settings;
625 };
626
627 struct ieee80211_if_mesh {
628 struct timer_list housekeeping_timer;
629 struct timer_list mesh_path_timer;
630 struct timer_list mesh_path_root_timer;
631
632 unsigned long wrkq_flags;
633 unsigned long mbss_changed;
634
635 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
636 size_t mesh_id_len;
637 /* Active Path Selection Protocol Identifier */
638 u8 mesh_pp_id;
639 /* Active Path Selection Metric Identifier */
640 u8 mesh_pm_id;
641 /* Congestion Control Mode Identifier */
642 u8 mesh_cc_id;
643 /* Synchronization Protocol Identifier */
644 u8 mesh_sp_id;
645 /* Authentication Protocol Identifier */
646 u8 mesh_auth_id;
647 /* Local mesh Sequence Number */
648 u32 sn;
649 /* Last used PREQ ID */
650 u32 preq_id;
651 atomic_t mpaths;
652 /* Timestamp of last SN update */
653 unsigned long last_sn_update;
654 /* Time when it's ok to send next PERR */
655 unsigned long next_perr;
656 /* Timestamp of last PREQ sent */
657 unsigned long last_preq;
658 struct mesh_rmc *rmc;
659 spinlock_t mesh_preq_queue_lock;
660 struct mesh_preq_queue preq_queue;
661 int preq_queue_len;
662 struct mesh_stats mshstats;
663 struct mesh_config mshcfg;
664 atomic_t estab_plinks;
665 u32 mesh_seqnum;
666 bool accepting_plinks;
667 int num_gates;
668 struct beacon_data __rcu *beacon;
669 const u8 *ie;
670 u8 ie_len;
671 enum {
672 IEEE80211_MESH_SEC_NONE = 0x0,
673 IEEE80211_MESH_SEC_AUTHED = 0x1,
674 IEEE80211_MESH_SEC_SECURED = 0x2,
675 } security;
676 bool user_mpm;
677 /* Extensible Synchronization Framework */
678 const struct ieee80211_mesh_sync_ops *sync_ops;
679 s64 sync_offset_clockdrift_max;
680 spinlock_t sync_offset_lock;
681 bool adjusting_tbtt;
682 /* mesh power save */
683 enum nl80211_mesh_power_mode nonpeer_pm;
684 int ps_peers_light_sleep;
685 int ps_peers_deep_sleep;
686 struct ps_data ps;
687 /* Channel Switching Support */
688 struct mesh_csa_settings __rcu *csa;
689 enum {
690 IEEE80211_MESH_CSA_ROLE_NONE,
691 IEEE80211_MESH_CSA_ROLE_INIT,
692 IEEE80211_MESH_CSA_ROLE_REPEATER,
693 } csa_role;
694 u8 chsw_ttl;
695 u16 pre_value;
696
697 /* offset from skb->data while building IE */
698 int meshconf_offset;
699 };
700
701 #ifdef CONFIG_MAC80211_MESH
702 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
703 do { (msh)->mshstats.name++; } while (0)
704 #else
705 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
706 do { } while (0)
707 #endif
708
709 /**
710 * enum ieee80211_sub_if_data_flags - virtual interface flags
711 *
712 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
713 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
714 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
715 * associated stations and deliver multicast frames both
716 * back to wireless media and to the local net stack.
717 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
718 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
719 * @IEEE80211_SDATA_MU_MIMO_OWNER: indicates interface owns MU-MIMO capability
720 */
721 enum ieee80211_sub_if_data_flags {
722 IEEE80211_SDATA_ALLMULTI = BIT(0),
723 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
724 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
725 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
726 IEEE80211_SDATA_IN_DRIVER = BIT(5),
727 IEEE80211_SDATA_MU_MIMO_OWNER = BIT(6),
728 };
729
730 /**
731 * enum ieee80211_sdata_state_bits - virtual interface state bits
732 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
733 * mirrors netif_running() but is separate for interface type
734 * change handling while the interface is up
735 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
736 * mode, so queues are stopped
737 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
738 * to offchannel, reset when offchannel returns
739 */
740 enum ieee80211_sdata_state_bits {
741 SDATA_STATE_RUNNING,
742 SDATA_STATE_OFFCHANNEL,
743 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
744 };
745
746 /**
747 * enum ieee80211_chanctx_mode - channel context configuration mode
748 *
749 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
750 * multiple interfaces
751 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
752 * only by a single interface. This can be used for example for
753 * non-fixed channel IBSS.
754 */
755 enum ieee80211_chanctx_mode {
756 IEEE80211_CHANCTX_SHARED,
757 IEEE80211_CHANCTX_EXCLUSIVE
758 };
759
760 /**
761 * enum ieee80211_chanctx_replace_state - channel context replacement state
762 *
763 * This is used for channel context in-place reservations that require channel
764 * context switch/swap.
765 *
766 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
767 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
768 * by a (not yet registered) channel context pointed by %replace_ctx.
769 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
770 * replaces an existing channel context pointed to by %replace_ctx.
771 */
772 enum ieee80211_chanctx_replace_state {
773 IEEE80211_CHANCTX_REPLACE_NONE,
774 IEEE80211_CHANCTX_WILL_BE_REPLACED,
775 IEEE80211_CHANCTX_REPLACES_OTHER,
776 };
777
778 struct ieee80211_chanctx {
779 struct list_head list;
780 struct rcu_head rcu_head;
781
782 struct list_head assigned_vifs;
783 struct list_head reserved_vifs;
784
785 enum ieee80211_chanctx_replace_state replace_state;
786 struct ieee80211_chanctx *replace_ctx;
787
788 enum ieee80211_chanctx_mode mode;
789 bool driver_present;
790
791 struct ieee80211_chanctx_conf conf;
792 };
793
794 struct mac80211_qos_map {
795 struct cfg80211_qos_map qos_map;
796 struct rcu_head rcu_head;
797 };
798
799 enum txq_info_flags {
800 IEEE80211_TXQ_STOP,
801 IEEE80211_TXQ_AMPDU,
802 };
803
804 struct txq_info {
805 struct sk_buff_head queue;
806 unsigned long flags;
807 unsigned long byte_cnt;
808
809 /* keep last! */
810 struct ieee80211_txq txq;
811 };
812
813 struct ieee80211_sub_if_data {
814 struct list_head list;
815
816 struct wireless_dev wdev;
817
818 /* keys */
819 struct list_head key_list;
820
821 /* count for keys needing tailroom space allocation */
822 int crypto_tx_tailroom_needed_cnt;
823 int crypto_tx_tailroom_pending_dec;
824 struct delayed_work dec_tailroom_needed_wk;
825
826 struct net_device *dev;
827 struct ieee80211_local *local;
828
829 unsigned int flags;
830
831 unsigned long state;
832
833 char name[IFNAMSIZ];
834
835 /* Fragment table for host-based reassembly */
836 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
837 unsigned int fragment_next;
838
839 /* TID bitmap for NoAck policy */
840 u16 noack_map;
841
842 /* bit field of ACM bits (BIT(802.1D tag)) */
843 u8 wmm_acm;
844
845 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
846 struct ieee80211_key __rcu *default_unicast_key;
847 struct ieee80211_key __rcu *default_multicast_key;
848 struct ieee80211_key __rcu *default_mgmt_key;
849
850 u16 sequence_number;
851 __be16 control_port_protocol;
852 bool control_port_no_encrypt;
853 int encrypt_headroom;
854
855 atomic_t txqs_len[IEEE80211_NUM_ACS];
856 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
857 struct mac80211_qos_map __rcu *qos_map;
858
859 struct work_struct csa_finalize_work;
860 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
861 struct cfg80211_chan_def csa_chandef;
862
863 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
864 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
865
866 /* context reservation -- protected with chanctx_mtx */
867 struct ieee80211_chanctx *reserved_chanctx;
868 struct cfg80211_chan_def reserved_chandef;
869 bool reserved_radar_required;
870 bool reserved_ready;
871
872 /* used to reconfigure hardware SM PS */
873 struct work_struct recalc_smps;
874
875 struct work_struct work;
876 struct sk_buff_head skb_queue;
877
878 u8 needed_rx_chains;
879 enum ieee80211_smps_mode smps_mode;
880
881 int user_power_level; /* in dBm */
882 int ap_power_level; /* in dBm */
883
884 bool radar_required;
885 struct delayed_work dfs_cac_timer_work;
886
887 /*
888 * AP this belongs to: self in AP mode and
889 * corresponding AP in VLAN mode, NULL for
890 * all others (might be needed later in IBSS)
891 */
892 struct ieee80211_if_ap *bss;
893
894 /* bitmap of allowed (non-MCS) rate indexes for rate control */
895 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
896
897 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
898 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
899
900 bool rc_has_vht_mcs_mask[IEEE80211_NUM_BANDS];
901 u16 rc_rateidx_vht_mcs_mask[IEEE80211_NUM_BANDS][NL80211_VHT_NSS_MAX];
902
903 union {
904 struct ieee80211_if_ap ap;
905 struct ieee80211_if_wds wds;
906 struct ieee80211_if_vlan vlan;
907 struct ieee80211_if_managed mgd;
908 struct ieee80211_if_ibss ibss;
909 struct ieee80211_if_mesh mesh;
910 struct ieee80211_if_ocb ocb;
911 u32 mntr_flags;
912 } u;
913
914 #ifdef CONFIG_MAC80211_DEBUGFS
915 struct {
916 struct dentry *subdir_stations;
917 struct dentry *default_unicast_key;
918 struct dentry *default_multicast_key;
919 struct dentry *default_mgmt_key;
920 } debugfs;
921 #endif
922
923 /* must be last, dynamically sized area in this! */
924 struct ieee80211_vif vif;
925 };
926
927 static inline
928 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
929 {
930 return container_of(p, struct ieee80211_sub_if_data, vif);
931 }
932
933 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
934 __acquires(&sdata->wdev.mtx)
935 {
936 mutex_lock(&sdata->wdev.mtx);
937 __acquire(&sdata->wdev.mtx);
938 }
939
940 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
941 __releases(&sdata->wdev.mtx)
942 {
943 mutex_unlock(&sdata->wdev.mtx);
944 __release(&sdata->wdev.mtx);
945 }
946
947 #define sdata_dereference(p, sdata) \
948 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
949
950 static inline void
951 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
952 {
953 lockdep_assert_held(&sdata->wdev.mtx);
954 }
955
956 static inline enum ieee80211_band
957 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
958 {
959 enum ieee80211_band band = IEEE80211_BAND_2GHZ;
960 struct ieee80211_chanctx_conf *chanctx_conf;
961
962 rcu_read_lock();
963 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
964 if (!WARN_ON(!chanctx_conf))
965 band = chanctx_conf->def.chan->band;
966 rcu_read_unlock();
967
968 return band;
969 }
970
971 static inline int
972 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
973 {
974 switch (chandef->width) {
975 case NL80211_CHAN_WIDTH_5:
976 return 2;
977 case NL80211_CHAN_WIDTH_10:
978 return 1;
979 default:
980 return 0;
981 }
982 }
983
984 static inline int
985 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
986 {
987 struct ieee80211_chanctx_conf *chanctx_conf;
988 int shift = 0;
989
990 rcu_read_lock();
991 chanctx_conf = rcu_dereference(vif->chanctx_conf);
992 if (chanctx_conf)
993 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
994 rcu_read_unlock();
995
996 return shift;
997 }
998
999 struct ieee80211_rx_agg {
1000 u8 addr[ETH_ALEN];
1001 u16 tid;
1002 };
1003
1004 enum sdata_queue_type {
1005 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
1006 IEEE80211_SDATA_QUEUE_AGG_START = 1,
1007 IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
1008 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3,
1009 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4,
1010 };
1011
1012 enum {
1013 IEEE80211_RX_MSG = 1,
1014 IEEE80211_TX_STATUS_MSG = 2,
1015 };
1016
1017 enum queue_stop_reason {
1018 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1019 IEEE80211_QUEUE_STOP_REASON_PS,
1020 IEEE80211_QUEUE_STOP_REASON_CSA,
1021 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1022 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1023 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1024 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1025 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1026 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1027 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1028
1029 IEEE80211_QUEUE_STOP_REASONS,
1030 };
1031
1032 #ifdef CONFIG_MAC80211_LEDS
1033 struct tpt_led_trigger {
1034 char name[32];
1035 const struct ieee80211_tpt_blink *blink_table;
1036 unsigned int blink_table_len;
1037 struct timer_list timer;
1038 unsigned long prev_traffic;
1039 unsigned long tx_bytes, rx_bytes;
1040 unsigned int active, want;
1041 bool running;
1042 };
1043 #endif
1044
1045 /**
1046 * mac80211 scan flags - currently active scan mode
1047 *
1048 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1049 * well be on the operating channel
1050 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1051 * determine if we are on the operating channel or not
1052 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1053 * channel. This should not interrupt normal traffic.
1054 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1055 * that the scan completed.
1056 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1057 * a scan complete for an aborted scan.
1058 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1059 * cancelled.
1060 */
1061 enum {
1062 SCAN_SW_SCANNING,
1063 SCAN_HW_SCANNING,
1064 SCAN_ONCHANNEL_SCANNING,
1065 SCAN_COMPLETED,
1066 SCAN_ABORTED,
1067 SCAN_HW_CANCELLED,
1068 };
1069
1070 /**
1071 * enum mac80211_scan_state - scan state machine states
1072 *
1073 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1074 * determines if we should keep on scanning or switch back to the
1075 * operating channel
1076 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1077 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1078 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1079 * send out data
1080 * @SCAN_RESUME: Resume the scan and scan the next channel
1081 * @SCAN_ABORT: Abort the scan and go back to operating channel
1082 */
1083 enum mac80211_scan_state {
1084 SCAN_DECISION,
1085 SCAN_SET_CHANNEL,
1086 SCAN_SEND_PROBE,
1087 SCAN_SUSPEND,
1088 SCAN_RESUME,
1089 SCAN_ABORT,
1090 };
1091
1092 struct ieee80211_local {
1093 /* embed the driver visible part.
1094 * don't cast (use the static inlines below), but we keep
1095 * it first anyway so they become a no-op */
1096 struct ieee80211_hw hw;
1097
1098 const struct ieee80211_ops *ops;
1099
1100 /*
1101 * private workqueue to mac80211. mac80211 makes this accessible
1102 * via ieee80211_queue_work()
1103 */
1104 struct workqueue_struct *workqueue;
1105
1106 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1107 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1108 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1109 spinlock_t queue_stop_reason_lock;
1110
1111 int open_count;
1112 int monitors, cooked_mntrs;
1113 /* number of interfaces with corresponding FIF_ flags */
1114 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1115 fif_probe_req;
1116 int probe_req_reg;
1117 unsigned int filter_flags; /* FIF_* */
1118
1119 bool wiphy_ciphers_allocated;
1120
1121 bool use_chanctx;
1122
1123 /* protects the aggregated multicast list and filter calls */
1124 spinlock_t filter_lock;
1125
1126 /* used for uploading changed mc list */
1127 struct work_struct reconfig_filter;
1128
1129 /* aggregated multicast list */
1130 struct netdev_hw_addr_list mc_list;
1131
1132 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1133
1134 /*
1135 * suspended is true if we finished all the suspend _and_ we have
1136 * not yet come up from resume. This is to be used by mac80211
1137 * to ensure driver sanity during suspend and mac80211's own
1138 * sanity. It can eventually be used for WoW as well.
1139 */
1140 bool suspended;
1141
1142 /*
1143 * Resuming is true while suspended, but when we're reprogramming the
1144 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1145 * again even though some other parts of the stack are still suspended
1146 * and we still drop received frames to avoid waking the stack.
1147 */
1148 bool resuming;
1149
1150 /*
1151 * quiescing is true during the suspend process _only_ to
1152 * ease timer cancelling etc.
1153 */
1154 bool quiescing;
1155
1156 /* device is started */
1157 bool started;
1158
1159 /* device is during a HW reconfig */
1160 bool in_reconfig;
1161
1162 /* wowlan is enabled -- don't reconfig on resume */
1163 bool wowlan;
1164
1165 struct work_struct radar_detected_work;
1166
1167 /* number of RX chains the hardware has */
1168 u8 rx_chains;
1169
1170 int tx_headroom; /* required headroom for hardware/radiotap */
1171
1172 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1173 * added to skb_queue will be processed, but frames in
1174 * skb_queue_unreliable may be dropped if the total length of these
1175 * queues increases over the limit. */
1176 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1177 struct tasklet_struct tasklet;
1178 struct sk_buff_head skb_queue;
1179 struct sk_buff_head skb_queue_unreliable;
1180
1181 spinlock_t rx_path_lock;
1182
1183 /* Station data */
1184 /*
1185 * The mutex only protects the list, hash table and
1186 * counter, reads are done with RCU.
1187 */
1188 struct mutex sta_mtx;
1189 spinlock_t tim_lock;
1190 unsigned long num_sta;
1191 struct list_head sta_list;
1192 struct rhashtable sta_hash;
1193 struct timer_list sta_cleanup;
1194 int sta_generation;
1195
1196 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1197 struct tasklet_struct tx_pending_tasklet;
1198
1199 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1200
1201 /* number of interfaces with allmulti RX */
1202 atomic_t iff_allmultis;
1203
1204 struct rate_control_ref *rate_ctrl;
1205
1206 struct crypto_cipher *wep_tx_tfm;
1207 struct crypto_cipher *wep_rx_tfm;
1208 u32 wep_iv;
1209
1210 /* see iface.c */
1211 struct list_head interfaces;
1212 struct mutex iflist_mtx;
1213
1214 /*
1215 * Key mutex, protects sdata's key_list and sta_info's
1216 * key pointers (write access, they're RCU.)
1217 */
1218 struct mutex key_mtx;
1219
1220 /* mutex for scan and work locking */
1221 struct mutex mtx;
1222
1223 /* Scanning and BSS list */
1224 unsigned long scanning;
1225 struct cfg80211_ssid scan_ssid;
1226 struct cfg80211_scan_request *int_scan_req;
1227 struct cfg80211_scan_request __rcu *scan_req;
1228 struct ieee80211_scan_request *hw_scan_req;
1229 struct cfg80211_chan_def scan_chandef;
1230 enum ieee80211_band hw_scan_band;
1231 int scan_channel_idx;
1232 int scan_ies_len;
1233 int hw_scan_ies_bufsize;
1234
1235 struct work_struct sched_scan_stopped_work;
1236 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1237 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1238 u8 scan_addr[ETH_ALEN];
1239
1240 unsigned long leave_oper_channel_time;
1241 enum mac80211_scan_state next_scan_state;
1242 struct delayed_work scan_work;
1243 struct ieee80211_sub_if_data __rcu *scan_sdata;
1244 /* For backward compatibility only -- do not use */
1245 struct cfg80211_chan_def _oper_chandef;
1246
1247 /* Temporary remain-on-channel for off-channel operations */
1248 struct ieee80211_channel *tmp_channel;
1249
1250 /* channel contexts */
1251 struct list_head chanctx_list;
1252 struct mutex chanctx_mtx;
1253
1254 #ifdef CONFIG_MAC80211_LEDS
1255 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1256 struct led_trigger tpt_led;
1257 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1258 atomic_t radio_led_active, tpt_led_active;
1259 struct tpt_led_trigger *tpt_led_trigger;
1260 #endif
1261
1262 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1263 /* SNMP counters */
1264 /* dot11CountersTable */
1265 u32 dot11TransmittedFragmentCount;
1266 u32 dot11MulticastTransmittedFrameCount;
1267 u32 dot11FailedCount;
1268 u32 dot11RetryCount;
1269 u32 dot11MultipleRetryCount;
1270 u32 dot11FrameDuplicateCount;
1271 u32 dot11ReceivedFragmentCount;
1272 u32 dot11MulticastReceivedFrameCount;
1273 u32 dot11TransmittedFrameCount;
1274
1275 /* TX/RX handler statistics */
1276 unsigned int tx_handlers_drop;
1277 unsigned int tx_handlers_queued;
1278 unsigned int tx_handlers_drop_wep;
1279 unsigned int tx_handlers_drop_not_assoc;
1280 unsigned int tx_handlers_drop_unauth_port;
1281 unsigned int rx_handlers_drop;
1282 unsigned int rx_handlers_queued;
1283 unsigned int rx_handlers_drop_nullfunc;
1284 unsigned int rx_handlers_drop_defrag;
1285 unsigned int tx_expand_skb_head;
1286 unsigned int tx_expand_skb_head_cloned;
1287 unsigned int rx_expand_skb_head_defrag;
1288 unsigned int rx_handlers_fragments;
1289 unsigned int tx_status_drop;
1290 #define I802_DEBUG_INC(c) (c)++
1291 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1292 #define I802_DEBUG_INC(c) do { } while (0)
1293 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1294
1295
1296 int total_ps_buffered; /* total number of all buffered unicast and
1297 * multicast packets for power saving stations
1298 */
1299
1300 bool pspolling;
1301 bool offchannel_ps_enabled;
1302 /*
1303 * PS can only be enabled when we have exactly one managed
1304 * interface (and monitors) in PS, this then points there.
1305 */
1306 struct ieee80211_sub_if_data *ps_sdata;
1307 struct work_struct dynamic_ps_enable_work;
1308 struct work_struct dynamic_ps_disable_work;
1309 struct timer_list dynamic_ps_timer;
1310 struct notifier_block ifa_notifier;
1311 struct notifier_block ifa6_notifier;
1312
1313 /*
1314 * The dynamic ps timeout configured from user space via WEXT -
1315 * this will override whatever chosen by mac80211 internally.
1316 */
1317 int dynamic_ps_forced_timeout;
1318
1319 int user_power_level; /* in dBm, for all interfaces */
1320
1321 enum ieee80211_smps_mode smps_mode;
1322
1323 struct work_struct restart_work;
1324
1325 #ifdef CONFIG_MAC80211_DEBUGFS
1326 struct local_debugfsdentries {
1327 struct dentry *rcdir;
1328 struct dentry *keys;
1329 } debugfs;
1330 #endif
1331
1332 /*
1333 * Remain-on-channel support
1334 */
1335 struct delayed_work roc_work;
1336 struct list_head roc_list;
1337 struct work_struct hw_roc_start, hw_roc_done;
1338 unsigned long hw_roc_start_time;
1339 u64 roc_cookie_counter;
1340
1341 struct idr ack_status_frames;
1342 spinlock_t ack_status_lock;
1343
1344 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1345
1346 /* virtual monitor interface */
1347 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1348 struct cfg80211_chan_def monitor_chandef;
1349
1350 /* extended capabilities provided by mac80211 */
1351 u8 ext_capa[8];
1352
1353 /* TDLS channel switch */
1354 struct work_struct tdls_chsw_work;
1355 struct sk_buff_head skb_queue_tdls_chsw;
1356 };
1357
1358 static inline struct ieee80211_sub_if_data *
1359 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1360 {
1361 return netdev_priv(dev);
1362 }
1363
1364 static inline struct ieee80211_sub_if_data *
1365 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1366 {
1367 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1368 }
1369
1370 /* this struct represents 802.11n's RA/TID combination */
1371 struct ieee80211_ra_tid {
1372 u8 ra[ETH_ALEN];
1373 u16 tid;
1374 };
1375
1376 /* this struct holds the value parsing from channel switch IE */
1377 struct ieee80211_csa_ie {
1378 struct cfg80211_chan_def chandef;
1379 u8 mode;
1380 u8 count;
1381 u8 ttl;
1382 u16 pre_value;
1383 };
1384
1385 /* Parsed Information Elements */
1386 struct ieee802_11_elems {
1387 const u8 *ie_start;
1388 size_t total_len;
1389
1390 /* pointers to IEs */
1391 const struct ieee80211_tdls_lnkie *lnk_id;
1392 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1393 const u8 *ext_capab;
1394 const u8 *ssid;
1395 const u8 *supp_rates;
1396 const u8 *ds_params;
1397 const struct ieee80211_tim_ie *tim;
1398 const u8 *challenge;
1399 const u8 *rsn;
1400 const u8 *erp_info;
1401 const u8 *ext_supp_rates;
1402 const u8 *wmm_info;
1403 const u8 *wmm_param;
1404 const struct ieee80211_ht_cap *ht_cap_elem;
1405 const struct ieee80211_ht_operation *ht_operation;
1406 const struct ieee80211_vht_cap *vht_cap_elem;
1407 const struct ieee80211_vht_operation *vht_operation;
1408 const struct ieee80211_meshconf_ie *mesh_config;
1409 const u8 *mesh_id;
1410 const u8 *peering;
1411 const __le16 *awake_window;
1412 const u8 *preq;
1413 const u8 *prep;
1414 const u8 *perr;
1415 const struct ieee80211_rann_ie *rann;
1416 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1417 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1418 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1419 const u8 *country_elem;
1420 const u8 *pwr_constr_elem;
1421 const u8 *cisco_dtpc_elem;
1422 const struct ieee80211_timeout_interval_ie *timeout_int;
1423 const u8 *opmode_notif;
1424 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1425 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1426
1427 /* length of them, respectively */
1428 u8 ext_capab_len;
1429 u8 ssid_len;
1430 u8 supp_rates_len;
1431 u8 tim_len;
1432 u8 challenge_len;
1433 u8 rsn_len;
1434 u8 ext_supp_rates_len;
1435 u8 wmm_info_len;
1436 u8 wmm_param_len;
1437 u8 mesh_id_len;
1438 u8 peering_len;
1439 u8 preq_len;
1440 u8 prep_len;
1441 u8 perr_len;
1442 u8 country_elem_len;
1443
1444 /* whether a parse error occurred while retrieving these elements */
1445 bool parse_error;
1446 };
1447
1448 static inline struct ieee80211_local *hw_to_local(
1449 struct ieee80211_hw *hw)
1450 {
1451 return container_of(hw, struct ieee80211_local, hw);
1452 }
1453
1454 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1455 {
1456 return container_of(txq, struct txq_info, txq);
1457 }
1458
1459 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1460 {
1461 return ether_addr_equal(raddr, addr) ||
1462 is_broadcast_ether_addr(raddr);
1463 }
1464
1465 static inline bool
1466 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1467 {
1468 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1469 status->flag & RX_FLAG_MACTIME_END);
1470 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END))
1471 return true;
1472 /* can't handle HT/VHT preamble yet */
1473 if (status->flag & RX_FLAG_MACTIME_PLCP_START &&
1474 !(status->flag & (RX_FLAG_HT | RX_FLAG_VHT)))
1475 return true;
1476 return false;
1477 }
1478
1479 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1480 struct ieee80211_rx_status *status,
1481 unsigned int mpdu_len,
1482 unsigned int mpdu_offset);
1483 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1484 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1485 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1486 u32 changed);
1487 void ieee80211_configure_filter(struct ieee80211_local *local);
1488 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1489
1490 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1491 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1492 u64 *cookie, gfp_t gfp);
1493
1494 /* STA code */
1495 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1496 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1497 struct cfg80211_auth_request *req);
1498 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1499 struct cfg80211_assoc_request *req);
1500 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1501 struct cfg80211_deauth_request *req);
1502 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1503 struct cfg80211_disassoc_request *req);
1504 void ieee80211_send_pspoll(struct ieee80211_local *local,
1505 struct ieee80211_sub_if_data *sdata);
1506 void ieee80211_recalc_ps(struct ieee80211_local *local);
1507 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1508 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1509 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1510 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1511 struct sk_buff *skb);
1512 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1513 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1514 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1515 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1516 __le16 fc, bool acked);
1517 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1518 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1519 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1520
1521 /* IBSS code */
1522 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1523 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1524 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1525 const u8 *bssid, const u8 *addr, u32 supp_rates);
1526 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1527 struct cfg80211_ibss_params *params);
1528 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1529 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1530 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1531 struct sk_buff *skb);
1532 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1533 struct cfg80211_csa_settings *csa_settings);
1534 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1535 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1536
1537 /* OCB code */
1538 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1539 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1540 const u8 *bssid, const u8 *addr, u32 supp_rates);
1541 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1542 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1543 struct ocb_setup *setup);
1544 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1545
1546 /* mesh code */
1547 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1548 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1549 struct sk_buff *skb);
1550 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1551 struct cfg80211_csa_settings *csa_settings);
1552 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1553
1554 /* scan/BSS handling */
1555 void ieee80211_scan_work(struct work_struct *work);
1556 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1557 const u8 *ssid, u8 ssid_len,
1558 struct ieee80211_channel **channels,
1559 unsigned int n_channels,
1560 enum nl80211_bss_scan_width scan_width);
1561 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1562 struct cfg80211_scan_request *req);
1563 void ieee80211_scan_cancel(struct ieee80211_local *local);
1564 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1565 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1566
1567 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1568 struct ieee80211_bss *
1569 ieee80211_bss_info_update(struct ieee80211_local *local,
1570 struct ieee80211_rx_status *rx_status,
1571 struct ieee80211_mgmt *mgmt,
1572 size_t len,
1573 struct ieee802_11_elems *elems,
1574 struct ieee80211_channel *channel);
1575 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1576 struct ieee80211_bss *bss);
1577
1578 /* scheduled scan handling */
1579 int
1580 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1581 struct cfg80211_sched_scan_request *req);
1582 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1583 struct cfg80211_sched_scan_request *req);
1584 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1585 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1586 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1587
1588 /* off-channel/mgmt-tx */
1589 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1590 void ieee80211_offchannel_return(struct ieee80211_local *local);
1591 void ieee80211_roc_setup(struct ieee80211_local *local);
1592 void ieee80211_start_next_roc(struct ieee80211_local *local);
1593 void ieee80211_roc_purge(struct ieee80211_local *local,
1594 struct ieee80211_sub_if_data *sdata);
1595 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1596 struct ieee80211_channel *chan,
1597 unsigned int duration, u64 *cookie);
1598 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1599 struct wireless_dev *wdev, u64 cookie);
1600 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1601 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1602 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1603 struct wireless_dev *wdev, u64 cookie);
1604
1605 /* channel switch handling */
1606 void ieee80211_csa_finalize_work(struct work_struct *work);
1607 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1608 struct cfg80211_csa_settings *params);
1609
1610 /* interface handling */
1611 int ieee80211_iface_init(void);
1612 void ieee80211_iface_exit(void);
1613 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1614 unsigned char name_assign_type,
1615 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1616 struct vif_params *params);
1617 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1618 enum nl80211_iftype type);
1619 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1620 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1621 u32 ieee80211_idle_off(struct ieee80211_local *local);
1622 void ieee80211_recalc_idle(struct ieee80211_local *local);
1623 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1624 const int offset);
1625 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1626 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1627 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1628 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1629
1630 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1631 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1632 bool update_bss);
1633
1634 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1635 {
1636 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1637 }
1638
1639 /* tx handling */
1640 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1641 void ieee80211_tx_pending(unsigned long data);
1642 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1643 struct net_device *dev);
1644 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1645 struct net_device *dev);
1646 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1647 struct net_device *dev,
1648 u32 info_flags);
1649 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1650 struct sk_buff_head *skbs);
1651 struct sk_buff *
1652 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1653 struct sk_buff *skb, u32 info_flags);
1654 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1655 struct ieee80211_supported_band *sband,
1656 int retry_count, int shift, bool send_to_cooked);
1657
1658 void ieee80211_check_fast_xmit(struct sta_info *sta);
1659 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1660 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1661 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1662
1663 /* HT */
1664 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1665 struct ieee80211_sta_ht_cap *ht_cap);
1666 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1667 struct ieee80211_supported_band *sband,
1668 const struct ieee80211_ht_cap *ht_cap_ie,
1669 struct sta_info *sta);
1670 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1671 const u8 *da, u16 tid,
1672 u16 initiator, u16 reason_code);
1673 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1674 enum ieee80211_smps_mode smps, const u8 *da,
1675 const u8 *bssid);
1676 void ieee80211_request_smps_ap_work(struct work_struct *work);
1677 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1678 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1679 enum ieee80211_smps_mode smps_mode_new);
1680
1681 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1682 u16 initiator, u16 reason, bool stop);
1683 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1684 u16 initiator, u16 reason, bool stop);
1685 void __ieee80211_start_rx_ba_session(struct sta_info *sta,
1686 u8 dialog_token, u16 timeout,
1687 u16 start_seq_num, u16 ba_policy, u16 tid,
1688 u16 buf_size, bool tx, bool auto_seq);
1689 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1690 enum ieee80211_agg_stop_reason reason);
1691 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1692 struct sta_info *sta,
1693 struct ieee80211_mgmt *mgmt, size_t len);
1694 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1695 struct sta_info *sta,
1696 struct ieee80211_mgmt *mgmt,
1697 size_t len);
1698 void ieee80211_process_addba_request(struct ieee80211_local *local,
1699 struct sta_info *sta,
1700 struct ieee80211_mgmt *mgmt,
1701 size_t len);
1702
1703 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1704 enum ieee80211_agg_stop_reason reason);
1705 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1706 enum ieee80211_agg_stop_reason reason);
1707 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1708 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1709 void ieee80211_ba_session_work(struct work_struct *work);
1710 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1711 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1712
1713 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1714
1715 /* VHT */
1716 void
1717 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1718 struct ieee80211_supported_band *sband,
1719 const struct ieee80211_vht_cap *vht_cap_ie,
1720 struct sta_info *sta);
1721 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1722 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1723 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1724 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
1725 struct ieee80211_mgmt *mgmt);
1726 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1727 struct sta_info *sta, u8 opmode,
1728 enum ieee80211_band band);
1729 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1730 struct sta_info *sta, u8 opmode,
1731 enum ieee80211_band band);
1732 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1733 struct ieee80211_sta_vht_cap *vht_cap);
1734 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
1735 u16 vht_mask[NL80211_VHT_NSS_MAX]);
1736
1737 /* Spectrum management */
1738 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1739 struct ieee80211_mgmt *mgmt,
1740 size_t len);
1741 /**
1742 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1743 * @sdata: the sdata of the interface which has received the frame
1744 * @elems: parsed 802.11 elements received with the frame
1745 * @current_band: indicates the current band
1746 * @sta_flags: contains information about own capabilities and restrictions
1747 * to decide which channel switch announcements can be accepted. Only the
1748 * following subset of &enum ieee80211_sta_flags are evaluated:
1749 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1750 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1751 * %IEEE80211_STA_DISABLE_160MHZ.
1752 * @bssid: the currently connected bssid (for reporting)
1753 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1754 All of them will be filled with if success only.
1755 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1756 */
1757 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1758 struct ieee802_11_elems *elems,
1759 enum ieee80211_band current_band,
1760 u32 sta_flags, u8 *bssid,
1761 struct ieee80211_csa_ie *csa_ie);
1762
1763 /* Suspend/resume and hw reconfiguration */
1764 int ieee80211_reconfig(struct ieee80211_local *local);
1765 void ieee80211_stop_device(struct ieee80211_local *local);
1766
1767 int __ieee80211_suspend(struct ieee80211_hw *hw,
1768 struct cfg80211_wowlan *wowlan);
1769
1770 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1771 {
1772 struct ieee80211_local *local = hw_to_local(hw);
1773
1774 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
1775 !test_bit(SCAN_COMPLETED, &local->scanning),
1776 "%s: resume with hardware scan still in progress\n",
1777 wiphy_name(hw->wiphy));
1778
1779 return ieee80211_reconfig(hw_to_local(hw));
1780 }
1781
1782 /* utility functions/constants */
1783 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1784 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1785 int rate, int erp, int short_preamble,
1786 int shift);
1787 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1788 bool bss_notify, bool enable_qos);
1789 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
1790 struct sta_info *sta, struct sk_buff *skb);
1791
1792 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1793 struct sk_buff *skb, int tid,
1794 enum ieee80211_band band);
1795
1796 static inline void
1797 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1798 struct sk_buff *skb, int tid,
1799 enum ieee80211_band band)
1800 {
1801 rcu_read_lock();
1802 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1803 rcu_read_unlock();
1804 }
1805
1806 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1807 struct sk_buff *skb, int tid)
1808 {
1809 struct ieee80211_chanctx_conf *chanctx_conf;
1810
1811 rcu_read_lock();
1812 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1813 if (WARN_ON(!chanctx_conf)) {
1814 rcu_read_unlock();
1815 kfree_skb(skb);
1816 return;
1817 }
1818
1819 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1820 chanctx_conf->def.chan->band);
1821 rcu_read_unlock();
1822 }
1823
1824 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1825 struct sk_buff *skb)
1826 {
1827 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1828 ieee80211_tx_skb_tid(sdata, skb, 7);
1829 }
1830
1831 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1832 struct ieee802_11_elems *elems,
1833 u64 filter, u32 crc);
1834 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1835 bool action,
1836 struct ieee802_11_elems *elems)
1837 {
1838 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1839 }
1840
1841
1842 extern const int ieee802_1d_to_ac[8];
1843
1844 static inline int ieee80211_ac_from_tid(int tid)
1845 {
1846 return ieee802_1d_to_ac[tid & 7];
1847 }
1848
1849 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1850 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1851 void ieee80211_dynamic_ps_timer(unsigned long data);
1852 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1853 struct ieee80211_sub_if_data *sdata,
1854 bool powersave);
1855 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1856 struct ieee80211_hdr *hdr);
1857 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1858 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
1859
1860 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1861 unsigned long queues,
1862 enum queue_stop_reason reason,
1863 bool refcounted);
1864 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1865 struct ieee80211_sub_if_data *sdata,
1866 enum queue_stop_reason reason);
1867 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1868 struct ieee80211_sub_if_data *sdata,
1869 enum queue_stop_reason reason);
1870 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1871 unsigned long queues,
1872 enum queue_stop_reason reason,
1873 bool refcounted);
1874 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1875 enum queue_stop_reason reason,
1876 bool refcounted);
1877 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1878 enum queue_stop_reason reason,
1879 bool refcounted);
1880 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1881 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1882 struct sk_buff *skb);
1883 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1884 struct sk_buff_head *skbs);
1885 void ieee80211_flush_queues(struct ieee80211_local *local,
1886 struct ieee80211_sub_if_data *sdata, bool drop);
1887 void __ieee80211_flush_queues(struct ieee80211_local *local,
1888 struct ieee80211_sub_if_data *sdata,
1889 unsigned int queues, bool drop);
1890
1891 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
1892 {
1893 /*
1894 * If quiescing is set, we are racing with __ieee80211_suspend.
1895 * __ieee80211_suspend flushes the workers after setting quiescing,
1896 * and we check quiescing / suspended before enqueing new workers.
1897 * We should abort the worker to avoid the races below.
1898 */
1899 if (local->quiescing)
1900 return false;
1901
1902 /*
1903 * We might already be suspended if the following scenario occurs:
1904 * __ieee80211_suspend Control path
1905 *
1906 * if (local->quiescing)
1907 * return;
1908 * local->quiescing = true;
1909 * flush_workqueue();
1910 * queue_work(...);
1911 * local->suspended = true;
1912 * local->quiescing = false;
1913 * worker starts running...
1914 */
1915 if (local->suspended)
1916 return false;
1917
1918 return true;
1919 }
1920
1921 void ieee80211_init_tx_queue(struct ieee80211_sub_if_data *sdata,
1922 struct sta_info *sta,
1923 struct txq_info *txq, int tid);
1924 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1925 u16 transaction, u16 auth_alg, u16 status,
1926 const u8 *extra, size_t extra_len, const u8 *bssid,
1927 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1928 u32 tx_flags);
1929 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1930 const u8 *bssid, u16 stype, u16 reason,
1931 bool send_frame, u8 *frame_buf);
1932 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1933 size_t buffer_len,
1934 struct ieee80211_scan_ies *ie_desc,
1935 const u8 *ie, size_t ie_len,
1936 u8 bands_used, u32 *rate_masks,
1937 struct cfg80211_chan_def *chandef);
1938 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1939 const u8 *src, const u8 *dst,
1940 u32 ratemask,
1941 struct ieee80211_channel *chan,
1942 const u8 *ssid, size_t ssid_len,
1943 const u8 *ie, size_t ie_len,
1944 bool directed);
1945 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
1946 const u8 *src, const u8 *dst,
1947 const u8 *ssid, size_t ssid_len,
1948 const u8 *ie, size_t ie_len,
1949 u32 ratemask, bool directed, u32 tx_flags,
1950 struct ieee80211_channel *channel, bool scan);
1951
1952 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1953 struct ieee802_11_elems *elems,
1954 enum ieee80211_band band, u32 *basic_rates);
1955 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1956 enum ieee80211_smps_mode smps_mode);
1957 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1958 enum ieee80211_smps_mode smps_mode);
1959 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1960 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
1961
1962 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1963 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1964 u16 cap);
1965 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1966 const struct cfg80211_chan_def *chandef,
1967 u16 prot_mode, bool rifs_mode);
1968 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1969 u32 cap);
1970 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1971 const struct cfg80211_chan_def *chandef);
1972 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1973 const struct ieee80211_supported_band *sband,
1974 const u8 *srates, int srates_len, u32 *rates);
1975 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1976 struct sk_buff *skb, bool need_basic,
1977 enum ieee80211_band band);
1978 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1979 struct sk_buff *skb, bool need_basic,
1980 enum ieee80211_band band);
1981 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
1982
1983 /* channel management */
1984 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
1985 struct cfg80211_chan_def *chandef);
1986 bool ieee80211_chandef_vht_oper(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 */
Linux kernel - Deliverables
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