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hyperv: Add processing of MTU reduced by the host
[linux/fpc-iii.git] / net / mac80211 / ieee80211_i.h
bloba51c993ece7346ed27a40b69fd994d0b6b22fc2a
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 <net/ieee80211_radiotap.h>
30 #include <net/cfg80211.h>
31 #include <net/mac80211.h>
32 #include "key.h"
33 #include "sta_info.h"
34 #include "debug.h"
35
36 struct ieee80211_local;
37
38 /* Maximum number of broadcast/multicast frames to buffer when some of the
39 * associated stations are using power saving. */
40 #define AP_MAX_BC_BUFFER 128
41
42 /* Maximum number of frames buffered to all STAs, including multicast frames.
43 * Note: increasing this limit increases the potential memory requirement. Each
44 * frame can be up to about 2 kB long. */
45 #define TOTAL_MAX_TX_BUFFER 512
46
47 /* Required encryption head and tailroom */
48 #define IEEE80211_ENCRYPT_HEADROOM 8
49 #define IEEE80211_ENCRYPT_TAILROOM 18
50
51 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
52 * reception of at least three fragmented frames. This limit can be increased
53 * by changing this define, at the cost of slower frame reassembly and
54 * increased memory use (about 2 kB of RAM per entry). */
55 #define IEEE80211_FRAGMENT_MAX 4
56
57 /* power level hasn't been configured (or set to automatic) */
58 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
59
60 /*
61 * Some APs experience problems when working with U-APSD. Decrease the
62 * probability of that happening by using legacy mode for all ACs but VO.
63 * The AP that caused us trouble was a Cisco 4410N. It ignores our
64 * setting, and always treats non-VO ACs as legacy.
65 */
66 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
67 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO
68
69 #define IEEE80211_DEFAULT_MAX_SP_LEN \
70 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
71
72 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
73
74 struct ieee80211_fragment_entry {
75 unsigned long first_frag_time;
76 unsigned int seq;
77 unsigned int rx_queue;
78 unsigned int last_frag;
79 unsigned int extra_len;
80 struct sk_buff_head skb_list;
81 int ccmp; /* Whether fragments were encrypted with CCMP */
82 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
83 };
84
85
86 struct ieee80211_bss {
87 u32 device_ts_beacon, device_ts_presp;
88
89 bool wmm_used;
90 bool uapsd_supported;
91
92 #define IEEE80211_MAX_SUPP_RATES 32
93 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
94 size_t supp_rates_len;
95 struct ieee80211_rate *beacon_rate;
96
97 /*
98 * During association, we save an ERP value from a probe response so
99 * that we can feed ERP info to the driver when handling the
100 * association completes. these fields probably won't be up-to-date
101 * otherwise, you probably don't want to use them.
102 */
103 bool has_erp_value;
104 u8 erp_value;
105
106 /* Keep track of the corruption of the last beacon/probe response. */
107 u8 corrupt_data;
108
109 /* Keep track of what bits of information we have valid info for. */
110 u8 valid_data;
111 };
112
113 /**
114 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
115 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
116 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
117 *
118 * These are bss flags that are attached to a bss in the
119 * @corrupt_data field of &struct ieee80211_bss.
120 */
121 enum ieee80211_bss_corrupt_data_flags {
122 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
123 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
124 };
125
126 /**
127 * enum ieee80211_valid_data_flags - BSS valid data flags
128 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
129 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
130 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
131 *
132 * These are bss flags that are attached to a bss in the
133 * @valid_data field of &struct ieee80211_bss. They show which parts
134 * of the data structure were received as a result of an un-corrupted
135 * beacon/probe response.
136 */
137 enum ieee80211_bss_valid_data_flags {
138 IEEE80211_BSS_VALID_WMM = BIT(1),
139 IEEE80211_BSS_VALID_RATES = BIT(2),
140 IEEE80211_BSS_VALID_ERP = BIT(3)
141 };
142
143 typedef unsigned __bitwise__ ieee80211_tx_result;
144 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
145 #define TX_DROP ((__force ieee80211_tx_result) 1u)
146 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
147
148 #define IEEE80211_TX_UNICAST BIT(1)
149 #define IEEE80211_TX_PS_BUFFERED BIT(2)
150
151 struct ieee80211_tx_data {
152 struct sk_buff *skb;
153 struct sk_buff_head skbs;
154 struct ieee80211_local *local;
155 struct ieee80211_sub_if_data *sdata;
156 struct sta_info *sta;
157 struct ieee80211_key *key;
158 struct ieee80211_tx_rate rate;
159
160 unsigned int flags;
161 };
162
163
164 typedef unsigned __bitwise__ ieee80211_rx_result;
165 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
166 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
167 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
168 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
169
170 /**
171 * enum ieee80211_packet_rx_flags - packet RX flags
172 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
173 * (incl. multicast frames)
174 * @IEEE80211_RX_FRAGMENTED: fragmented frame
175 * @IEEE80211_RX_AMSDU: a-MSDU packet
176 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
177 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
178 *
179 * These are per-frame flags that are attached to a frame in the
180 * @rx_flags field of &struct ieee80211_rx_status.
181 */
182 enum ieee80211_packet_rx_flags {
183 IEEE80211_RX_RA_MATCH = BIT(1),
184 IEEE80211_RX_FRAGMENTED = BIT(2),
185 IEEE80211_RX_AMSDU = BIT(3),
186 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
187 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
188 };
189
190 /**
191 * enum ieee80211_rx_flags - RX data flags
192 *
193 * @IEEE80211_RX_CMNTR: received on cooked monitor already
194 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
195 * to cfg80211_report_obss_beacon().
196 *
197 * These flags are used across handling multiple interfaces
198 * for a single frame.
199 */
200 enum ieee80211_rx_flags {
201 IEEE80211_RX_CMNTR = BIT(0),
202 IEEE80211_RX_BEACON_REPORTED = BIT(1),
203 };
204
205 struct ieee80211_rx_data {
206 struct sk_buff *skb;
207 struct ieee80211_local *local;
208 struct ieee80211_sub_if_data *sdata;
209 struct sta_info *sta;
210 struct ieee80211_key *key;
211
212 unsigned int flags;
213
214 /*
215 * Index into sequence numbers array, 0..16
216 * since the last (16) is used for non-QoS,
217 * will be 16 on non-QoS frames.
218 */
219 int seqno_idx;
220
221 /*
222 * Index into the security IV/PN arrays, 0..16
223 * since the last (16) is used for CCMP-encrypted
224 * management frames, will be set to 16 on mgmt
225 * frames and 0 on non-QoS frames.
226 */
227 int security_idx;
228
229 u32 tkip_iv32;
230 u16 tkip_iv16;
231 };
232
233 struct ieee80211_csa_settings {
234 const u16 *counter_offsets_beacon;
235 const u16 *counter_offsets_presp;
236
237 int n_counter_offsets_beacon;
238 int n_counter_offsets_presp;
239
240 u8 count;
241 };
242
243 struct beacon_data {
244 u8 *head, *tail;
245 int head_len, tail_len;
246 struct ieee80211_meshconf_ie *meshconf;
247 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
248 u8 csa_current_counter;
249 struct rcu_head rcu_head;
250 };
251
252 struct probe_resp {
253 struct rcu_head rcu_head;
254 int len;
255 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
256 u8 data[0];
257 };
258
259 struct ps_data {
260 /* yes, this looks ugly, but guarantees that we can later use
261 * bitmap_empty :)
262 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
263 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
264 __aligned(__alignof__(unsigned long));
265 struct sk_buff_head bc_buf;
266 atomic_t num_sta_ps; /* number of stations in PS mode */
267 int dtim_count;
268 bool dtim_bc_mc;
269 };
270
271 struct ieee80211_if_ap {
272 struct beacon_data __rcu *beacon;
273 struct probe_resp __rcu *probe_resp;
274
275 /* to be used after channel switch. */
276 struct cfg80211_beacon_data *next_beacon;
277 struct list_head vlans; /* write-protected with RTNL and local->mtx */
278
279 struct ps_data ps;
280 atomic_t num_mcast_sta; /* number of stations receiving multicast */
281 enum ieee80211_smps_mode req_smps, /* requested smps mode */
282 driver_smps_mode; /* smps mode request */
283
284 struct work_struct request_smps_work;
285 };
286
287 struct ieee80211_if_wds {
288 struct sta_info *sta;
289 u8 remote_addr[ETH_ALEN];
290 };
291
292 struct ieee80211_if_vlan {
293 struct list_head list; /* write-protected with RTNL and local->mtx */
294
295 /* used for all tx if the VLAN is configured to 4-addr mode */
296 struct sta_info __rcu *sta;
297 };
298
299 struct mesh_stats {
300 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
301 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
302 __u32 fwded_frames; /* Mesh total forwarded frames */
303 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
304 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
305 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
306 };
307
308 #define PREQ_Q_F_START 0x1
309 #define PREQ_Q_F_REFRESH 0x2
310 struct mesh_preq_queue {
311 struct list_head list;
312 u8 dst[ETH_ALEN];
313 u8 flags;
314 };
315
316 #if HZ/100 == 0
317 #define IEEE80211_ROC_MIN_LEFT 1
318 #else
319 #define IEEE80211_ROC_MIN_LEFT (HZ/100)
320 #endif
321
322 struct ieee80211_roc_work {
323 struct list_head list;
324 struct list_head dependents;
325
326 struct delayed_work work;
327
328 struct ieee80211_sub_if_data *sdata;
329
330 struct ieee80211_channel *chan;
331
332 bool started, abort, hw_begun, notified;
333 bool to_be_freed;
334 bool on_channel;
335
336 unsigned long hw_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 struct ieee80211_if_managed {
421 struct timer_list timer;
422 struct timer_list conn_mon_timer;
423 struct timer_list bcn_mon_timer;
424 struct timer_list chswitch_timer;
425 struct work_struct monitor_work;
426 struct work_struct chswitch_work;
427 struct work_struct beacon_connection_loss_work;
428 struct work_struct csa_connection_drop_work;
429
430 unsigned long beacon_timeout;
431 unsigned long probe_timeout;
432 int probe_send_count;
433 bool nullfunc_failed;
434 bool connection_loss;
435
436 struct cfg80211_bss *associated;
437 struct ieee80211_mgd_auth_data *auth_data;
438 struct ieee80211_mgd_assoc_data *assoc_data;
439
440 u8 bssid[ETH_ALEN];
441
442 u16 aid;
443
444 bool powersave; /* powersave requested for this iface */
445 bool broken_ap; /* AP is broken -- turn off powersave */
446 bool have_beacon;
447 u8 dtim_period;
448 enum ieee80211_smps_mode req_smps, /* requested smps mode */
449 driver_smps_mode; /* smps mode request */
450
451 struct work_struct request_smps_work;
452
453 unsigned int flags;
454
455 bool csa_waiting_bcn;
456
457 bool beacon_crc_valid;
458 u32 beacon_crc;
459
460 bool status_acked;
461 bool status_received;
462 __le16 status_fc;
463
464 enum {
465 IEEE80211_MFP_DISABLED,
466 IEEE80211_MFP_OPTIONAL,
467 IEEE80211_MFP_REQUIRED
468 } mfp; /* management frame protection */
469
470 /*
471 * Bitmask of enabled u-apsd queues,
472 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
473 * to take effect.
474 */
475 unsigned int uapsd_queues;
476
477 /*
478 * Maximum number of buffered frames AP can deliver during a
479 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
480 * Needs a new association to take effect.
481 */
482 unsigned int uapsd_max_sp_len;
483
484 int wmm_last_param_set;
485
486 u8 use_4addr;
487
488 s16 p2p_noa_index;
489
490 /* Signal strength from the last Beacon frame in the current BSS. */
491 int last_beacon_signal;
492
493 /*
494 * Weighted average of the signal strength from Beacon frames in the
495 * current BSS. This is in units of 1/16 of the signal unit to maintain
496 * accuracy and to speed up calculations, i.e., the value need to be
497 * divided by 16 to get the actual value.
498 */
499 int ave_beacon_signal;
500
501 /*
502 * Number of Beacon frames used in ave_beacon_signal. This can be used
503 * to avoid generating less reliable cqm events that would be based
504 * only on couple of received frames.
505 */
506 unsigned int count_beacon_signal;
507
508 /*
509 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
510 * that triggered a cqm event. 0 indicates that no event has been
511 * generated for the current association.
512 */
513 int last_cqm_event_signal;
514
515 /*
516 * State variables for keeping track of RSSI of the AP currently
517 * connected to and informing driver when RSSI has gone
518 * below/above a certain threshold.
519 */
520 int rssi_min_thold, rssi_max_thold;
521 int last_ave_beacon_signal;
522
523 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
524 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
525 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
526 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
527
528 u8 tdls_peer[ETH_ALEN] __aligned(2);
529 struct delayed_work tdls_peer_del_work;
530
531 /* WMM-AC TSPEC support */
532 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
533 /* Use a separate work struct so that we can do something here
534 * while the sdata->work is flushing the queues, for example.
535 * otherwise, in scenarios where we hardly get any traffic out
536 * on the BE queue, but there's a lot of VO traffic, we might
537 * get stuck in a downgraded situation and flush takes forever.
538 */
539 struct delayed_work tx_tspec_wk;
540 };
541
542 struct ieee80211_if_ibss {
543 struct timer_list timer;
544 struct work_struct csa_connection_drop_work;
545
546 unsigned long last_scan_completed;
547
548 u32 basic_rates;
549
550 bool fixed_bssid;
551 bool fixed_channel;
552 bool privacy;
553
554 bool control_port;
555 bool userspace_handles_dfs;
556
557 u8 bssid[ETH_ALEN] __aligned(2);
558 u8 ssid[IEEE80211_MAX_SSID_LEN];
559 u8 ssid_len, ie_len;
560 u8 *ie;
561 struct cfg80211_chan_def chandef;
562
563 unsigned long ibss_join_req;
564 /* probe response/beacon for IBSS */
565 struct beacon_data __rcu *presp;
566
567 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
568 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
569
570 spinlock_t incomplete_lock;
571 struct list_head incomplete_stations;
572
573 enum {
574 IEEE80211_IBSS_MLME_SEARCH,
575 IEEE80211_IBSS_MLME_JOINED,
576 } state;
577 };
578
579 /**
580 * struct ieee80211_if_ocb - OCB mode state
581 *
582 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
583 * @wrkq_flags: OCB deferred task action
584 * @incomplete_lock: delayed STA insertion lock
585 * @incomplete_stations: list of STAs waiting for delayed insertion
586 * @joined: indication if the interface is connected to an OCB network
587 */
588 struct ieee80211_if_ocb {
589 struct timer_list housekeeping_timer;
590 unsigned long wrkq_flags;
591
592 spinlock_t incomplete_lock;
593 struct list_head incomplete_stations;
594
595 bool joined;
596 };
597
598 /**
599 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
600 *
601 * these declarations define the interface, which enables
602 * vendor-specific mesh synchronization
603 *
604 */
605 struct ieee802_11_elems;
606 struct ieee80211_mesh_sync_ops {
607 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
608 u16 stype,
609 struct ieee80211_mgmt *mgmt,
610 struct ieee802_11_elems *elems,
611 struct ieee80211_rx_status *rx_status);
612
613 /* should be called with beacon_data under RCU read lock */
614 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata,
615 struct beacon_data *beacon);
616 /* add other framework functions here */
617 };
618
619 struct mesh_csa_settings {
620 struct rcu_head rcu_head;
621 struct cfg80211_csa_settings settings;
622 };
623
624 struct ieee80211_if_mesh {
625 struct timer_list housekeeping_timer;
626 struct timer_list mesh_path_timer;
627 struct timer_list mesh_path_root_timer;
628
629 unsigned long wrkq_flags;
630 unsigned long mbss_changed;
631
632 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
633 size_t mesh_id_len;
634 /* Active Path Selection Protocol Identifier */
635 u8 mesh_pp_id;
636 /* Active Path Selection Metric Identifier */
637 u8 mesh_pm_id;
638 /* Congestion Control Mode Identifier */
639 u8 mesh_cc_id;
640 /* Synchronization Protocol Identifier */
641 u8 mesh_sp_id;
642 /* Authentication Protocol Identifier */
643 u8 mesh_auth_id;
644 /* Local mesh Sequence Number */
645 u32 sn;
646 /* Last used PREQ ID */
647 u32 preq_id;
648 atomic_t mpaths;
649 /* Timestamp of last SN update */
650 unsigned long last_sn_update;
651 /* Time when it's ok to send next PERR */
652 unsigned long next_perr;
653 /* Timestamp of last PREQ sent */
654 unsigned long last_preq;
655 struct mesh_rmc *rmc;
656 spinlock_t mesh_preq_queue_lock;
657 struct mesh_preq_queue preq_queue;
658 int preq_queue_len;
659 struct mesh_stats mshstats;
660 struct mesh_config mshcfg;
661 atomic_t estab_plinks;
662 u32 mesh_seqnum;
663 bool accepting_plinks;
664 int num_gates;
665 struct beacon_data __rcu *beacon;
666 const u8 *ie;
667 u8 ie_len;
668 enum {
669 IEEE80211_MESH_SEC_NONE = 0x0,
670 IEEE80211_MESH_SEC_AUTHED = 0x1,
671 IEEE80211_MESH_SEC_SECURED = 0x2,
672 } security;
673 bool user_mpm;
674 /* Extensible Synchronization Framework */
675 const struct ieee80211_mesh_sync_ops *sync_ops;
676 s64 sync_offset_clockdrift_max;
677 spinlock_t sync_offset_lock;
678 bool adjusting_tbtt;
679 /* mesh power save */
680 enum nl80211_mesh_power_mode nonpeer_pm;
681 int ps_peers_light_sleep;
682 int ps_peers_deep_sleep;
683 struct ps_data ps;
684 /* Channel Switching Support */
685 struct mesh_csa_settings __rcu *csa;
686 enum {
687 IEEE80211_MESH_CSA_ROLE_NONE,
688 IEEE80211_MESH_CSA_ROLE_INIT,
689 IEEE80211_MESH_CSA_ROLE_REPEATER,
690 } csa_role;
691 u8 chsw_ttl;
692 u16 pre_value;
693
694 /* offset from skb->data while building IE */
695 int meshconf_offset;
696 };
697
698 #ifdef CONFIG_MAC80211_MESH
699 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
700 do { (msh)->mshstats.name++; } while (0)
701 #else
702 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
703 do { } while (0)
704 #endif
705
706 /**
707 * enum ieee80211_sub_if_data_flags - virtual interface flags
708 *
709 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
710 * @IEEE80211_SDATA_PROMISC: interface is promisc
711 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
712 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
713 * associated stations and deliver multicast frames both
714 * back to wireless media and to the local net stack.
715 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
716 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
717 */
718 enum ieee80211_sub_if_data_flags {
719 IEEE80211_SDATA_ALLMULTI = BIT(0),
720 IEEE80211_SDATA_PROMISC = BIT(1),
721 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
722 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
723 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
724 IEEE80211_SDATA_IN_DRIVER = BIT(5),
725 };
726
727 /**
728 * enum ieee80211_sdata_state_bits - virtual interface state bits
729 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
730 * mirrors netif_running() but is separate for interface type
731 * change handling while the interface is up
732 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
733 * mode, so queues are stopped
734 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
735 * to offchannel, reset when offchannel returns
736 */
737 enum ieee80211_sdata_state_bits {
738 SDATA_STATE_RUNNING,
739 SDATA_STATE_OFFCHANNEL,
740 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
741 };
742
743 /**
744 * enum ieee80211_chanctx_mode - channel context configuration mode
745 *
746 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
747 * multiple interfaces
748 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
749 * only by a single interface. This can be used for example for
750 * non-fixed channel IBSS.
751 */
752 enum ieee80211_chanctx_mode {
753 IEEE80211_CHANCTX_SHARED,
754 IEEE80211_CHANCTX_EXCLUSIVE
755 };
756
757 /**
758 * enum ieee80211_chanctx_replace_state - channel context replacement state
759 *
760 * This is used for channel context in-place reservations that require channel
761 * context switch/swap.
762 *
763 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
764 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
765 * by a (not yet registered) channel context pointed by %replace_ctx.
766 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
767 * replaces an existing channel context pointed to by %replace_ctx.
768 */
769 enum ieee80211_chanctx_replace_state {
770 IEEE80211_CHANCTX_REPLACE_NONE,
771 IEEE80211_CHANCTX_WILL_BE_REPLACED,
772 IEEE80211_CHANCTX_REPLACES_OTHER,
773 };
774
775 struct ieee80211_chanctx {
776 struct list_head list;
777 struct rcu_head rcu_head;
778
779 struct list_head assigned_vifs;
780 struct list_head reserved_vifs;
781
782 enum ieee80211_chanctx_replace_state replace_state;
783 struct ieee80211_chanctx *replace_ctx;
784
785 enum ieee80211_chanctx_mode mode;
786 bool driver_present;
787
788 struct ieee80211_chanctx_conf conf;
789 };
790
791 struct mac80211_qos_map {
792 struct cfg80211_qos_map qos_map;
793 struct rcu_head rcu_head;
794 };
795
796 struct ieee80211_sub_if_data {
797 struct list_head list;
798
799 struct wireless_dev wdev;
800
801 /* keys */
802 struct list_head key_list;
803
804 /* count for keys needing tailroom space allocation */
805 int crypto_tx_tailroom_needed_cnt;
806 int crypto_tx_tailroom_pending_dec;
807 struct delayed_work dec_tailroom_needed_wk;
808
809 struct net_device *dev;
810 struct ieee80211_local *local;
811
812 unsigned int flags;
813
814 unsigned long state;
815
816 int drop_unencrypted;
817
818 char name[IFNAMSIZ];
819
820 /* Fragment table for host-based reassembly */
821 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
822 unsigned int fragment_next;
823
824 /* TID bitmap for NoAck policy */
825 u16 noack_map;
826
827 /* bit field of ACM bits (BIT(802.1D tag)) */
828 u8 wmm_acm;
829
830 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
831 struct ieee80211_key __rcu *default_unicast_key;
832 struct ieee80211_key __rcu *default_multicast_key;
833 struct ieee80211_key __rcu *default_mgmt_key;
834
835 u16 sequence_number;
836 __be16 control_port_protocol;
837 bool control_port_no_encrypt;
838 int encrypt_headroom;
839
840 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
841 struct mac80211_qos_map __rcu *qos_map;
842
843 struct work_struct csa_finalize_work;
844 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
845 struct cfg80211_chan_def csa_chandef;
846
847 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
848 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
849
850 /* context reservation -- protected with chanctx_mtx */
851 struct ieee80211_chanctx *reserved_chanctx;
852 struct cfg80211_chan_def reserved_chandef;
853 bool reserved_radar_required;
854 bool reserved_ready;
855
856 /* used to reconfigure hardware SM PS */
857 struct work_struct recalc_smps;
858
859 struct work_struct work;
860 struct sk_buff_head skb_queue;
861
862 u8 needed_rx_chains;
863 enum ieee80211_smps_mode smps_mode;
864
865 int user_power_level; /* in dBm */
866 int ap_power_level; /* in dBm */
867
868 bool radar_required;
869 struct delayed_work dfs_cac_timer_work;
870
871 /*
872 * AP this belongs to: self in AP mode and
873 * corresponding AP in VLAN mode, NULL for
874 * all others (might be needed later in IBSS)
875 */
876 struct ieee80211_if_ap *bss;
877
878 /* bitmap of allowed (non-MCS) rate indexes for rate control */
879 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
880
881 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
882 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
883
884 union {
885 struct ieee80211_if_ap ap;
886 struct ieee80211_if_wds wds;
887 struct ieee80211_if_vlan vlan;
888 struct ieee80211_if_managed mgd;
889 struct ieee80211_if_ibss ibss;
890 struct ieee80211_if_mesh mesh;
891 struct ieee80211_if_ocb ocb;
892 u32 mntr_flags;
893 } u;
894
895 #ifdef CONFIG_MAC80211_DEBUGFS
896 struct {
897 struct dentry *subdir_stations;
898 struct dentry *default_unicast_key;
899 struct dentry *default_multicast_key;
900 struct dentry *default_mgmt_key;
901 } debugfs;
902 #endif
903
904 /* must be last, dynamically sized area in this! */
905 struct ieee80211_vif vif;
906 };
907
908 static inline
909 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
910 {
911 return container_of(p, struct ieee80211_sub_if_data, vif);
912 }
913
914 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
915 __acquires(&sdata->wdev.mtx)
916 {
917 mutex_lock(&sdata->wdev.mtx);
918 __acquire(&sdata->wdev.mtx);
919 }
920
921 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
922 __releases(&sdata->wdev.mtx)
923 {
924 mutex_unlock(&sdata->wdev.mtx);
925 __release(&sdata->wdev.mtx);
926 }
927
928 #define sdata_dereference(p, sdata) \
929 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
930
931 static inline void
932 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
933 {
934 lockdep_assert_held(&sdata->wdev.mtx);
935 }
936
937 static inline enum ieee80211_band
938 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
939 {
940 enum ieee80211_band band = IEEE80211_BAND_2GHZ;
941 struct ieee80211_chanctx_conf *chanctx_conf;
942
943 rcu_read_lock();
944 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
945 if (!WARN_ON(!chanctx_conf))
946 band = chanctx_conf->def.chan->band;
947 rcu_read_unlock();
948
949 return band;
950 }
951
952 static inline int
953 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
954 {
955 switch (chandef->width) {
956 case NL80211_CHAN_WIDTH_5:
957 return 2;
958 case NL80211_CHAN_WIDTH_10:
959 return 1;
960 default:
961 return 0;
962 }
963 }
964
965 static inline int
966 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
967 {
968 struct ieee80211_chanctx_conf *chanctx_conf;
969 int shift = 0;
970
971 rcu_read_lock();
972 chanctx_conf = rcu_dereference(vif->chanctx_conf);
973 if (chanctx_conf)
974 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
975 rcu_read_unlock();
976
977 return shift;
978 }
979
980 struct ieee80211_rx_agg {
981 u8 addr[ETH_ALEN];
982 u16 tid;
983 };
984
985 enum sdata_queue_type {
986 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
987 IEEE80211_SDATA_QUEUE_AGG_START = 1,
988 IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
989 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3,
990 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4,
991 };
992
993 enum {
994 IEEE80211_RX_MSG = 1,
995 IEEE80211_TX_STATUS_MSG = 2,
996 };
997
998 enum queue_stop_reason {
999 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1000 IEEE80211_QUEUE_STOP_REASON_PS,
1001 IEEE80211_QUEUE_STOP_REASON_CSA,
1002 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1003 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1004 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1005 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1006 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1007 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1008
1009 IEEE80211_QUEUE_STOP_REASONS,
1010 };
1011
1012 #ifdef CONFIG_MAC80211_LEDS
1013 struct tpt_led_trigger {
1014 struct led_trigger trig;
1015 char name[32];
1016 const struct ieee80211_tpt_blink *blink_table;
1017 unsigned int blink_table_len;
1018 struct timer_list timer;
1019 unsigned long prev_traffic;
1020 unsigned long tx_bytes, rx_bytes;
1021 unsigned int active, want;
1022 bool running;
1023 };
1024 #endif
1025
1026 /*
1027 * struct ieee80211_tx_latency_bin_ranges - Tx latency statistics bins ranges
1028 *
1029 * Measuring Tx latency statistics. Counts how many Tx frames transmitted in a
1030 * certain latency range (in Milliseconds). Each station that uses these
1031 * ranges will have bins to count the amount of frames received in that range.
1032 * The user can configure the ranges via debugfs.
1033 * If ranges is NULL then Tx latency statistics bins are disabled for all
1034 * stations.
1035 *
1036 * @n_ranges: number of ranges that are taken in account
1037 * @ranges: the ranges that the user requested or NULL if disabled.
1038 */
1039 struct ieee80211_tx_latency_bin_ranges {
1040 int n_ranges;
1041 u32 ranges[];
1042 };
1043
1044 /**
1045 * mac80211 scan flags - currently active scan mode
1046 *
1047 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1048 * well be on the operating channel
1049 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1050 * determine if we are on the operating channel or not
1051 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1052 * channel. This should not interrupt normal traffic.
1053 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1054 * that the scan completed.
1055 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1056 * a scan complete for an aborted scan.
1057 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1058 * cancelled.
1059 */
1060 enum {
1061 SCAN_SW_SCANNING,
1062 SCAN_HW_SCANNING,
1063 SCAN_ONCHANNEL_SCANNING,
1064 SCAN_COMPLETED,
1065 SCAN_ABORTED,
1066 SCAN_HW_CANCELLED,
1067 };
1068
1069 /**
1070 * enum mac80211_scan_state - scan state machine states
1071 *
1072 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1073 * determines if we should keep on scanning or switch back to the
1074 * operating channel
1075 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1076 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1077 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1078 * send out data
1079 * @SCAN_RESUME: Resume the scan and scan the next channel
1080 * @SCAN_ABORT: Abort the scan and go back to operating channel
1081 */
1082 enum mac80211_scan_state {
1083 SCAN_DECISION,
1084 SCAN_SET_CHANNEL,
1085 SCAN_SEND_PROBE,
1086 SCAN_SUSPEND,
1087 SCAN_RESUME,
1088 SCAN_ABORT,
1089 };
1090
1091 struct ieee80211_local {
1092 /* embed the driver visible part.
1093 * don't cast (use the static inlines below), but we keep
1094 * it first anyway so they become a no-op */
1095 struct ieee80211_hw hw;
1096
1097 const struct ieee80211_ops *ops;
1098
1099 /*
1100 * private workqueue to mac80211. mac80211 makes this accessible
1101 * via ieee80211_queue_work()
1102 */
1103 struct workqueue_struct *workqueue;
1104
1105 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1106 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1107 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1108 spinlock_t queue_stop_reason_lock;
1109
1110 int open_count;
1111 int monitors, cooked_mntrs;
1112 /* number of interfaces with corresponding FIF_ flags */
1113 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1114 fif_probe_req;
1115 int probe_req_reg;
1116 unsigned int filter_flags; /* FIF_* */
1117
1118 bool wiphy_ciphers_allocated;
1119
1120 bool use_chanctx;
1121
1122 /* protects the aggregated multicast list and filter calls */
1123 spinlock_t filter_lock;
1124
1125 /* used for uploading changed mc list */
1126 struct work_struct reconfig_filter;
1127
1128 /* aggregated multicast list */
1129 struct netdev_hw_addr_list mc_list;
1130
1131 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1132
1133 /*
1134 * suspended is true if we finished all the suspend _and_ we have
1135 * not yet come up from resume. This is to be used by mac80211
1136 * to ensure driver sanity during suspend and mac80211's own
1137 * sanity. It can eventually be used for WoW as well.
1138 */
1139 bool suspended;
1140
1141 /*
1142 * Resuming is true while suspended, but when we're reprogramming the
1143 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1144 * again even though some other parts of the stack are still suspended
1145 * and we still drop received frames to avoid waking the stack.
1146 */
1147 bool resuming;
1148
1149 /*
1150 * quiescing is true during the suspend process _only_ to
1151 * ease timer cancelling etc.
1152 */
1153 bool quiescing;
1154
1155 /* device is started */
1156 bool started;
1157
1158 /* device is during a HW reconfig */
1159 bool in_reconfig;
1160
1161 /* wowlan is enabled -- don't reconfig on resume */
1162 bool wowlan;
1163
1164 /* DFS/radar detection is enabled */
1165 bool radar_detect_enabled;
1166 struct work_struct radar_detected_work;
1167
1168 /* number of RX chains the hardware has */
1169 u8 rx_chains;
1170
1171 int tx_headroom; /* required headroom for hardware/radiotap */
1172
1173 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1174 * added to skb_queue will be processed, but frames in
1175 * skb_queue_unreliable may be dropped if the total length of these
1176 * queues increases over the limit. */
1177 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1178 struct tasklet_struct tasklet;
1179 struct sk_buff_head skb_queue;
1180 struct sk_buff_head skb_queue_unreliable;
1181
1182 spinlock_t rx_path_lock;
1183
1184 /* Station data */
1185 /*
1186 * The mutex only protects the list, hash table and
1187 * counter, reads are done with RCU.
1188 */
1189 struct mutex sta_mtx;
1190 spinlock_t tim_lock;
1191 unsigned long num_sta;
1192 struct list_head sta_list;
1193 struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
1194 struct timer_list sta_cleanup;
1195 int sta_generation;
1196
1197 /*
1198 * Tx latency statistics parameters for all stations.
1199 * Can enable via debugfs (NULL when disabled).
1200 */
1201 struct ieee80211_tx_latency_bin_ranges __rcu *tx_latency;
1202
1203 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1204 struct tasklet_struct tx_pending_tasklet;
1205
1206 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1207
1208 /* number of interfaces with corresponding IFF_ flags */
1209 atomic_t iff_allmultis, iff_promiscs;
1210
1211 struct rate_control_ref *rate_ctrl;
1212
1213 struct crypto_cipher *wep_tx_tfm;
1214 struct crypto_cipher *wep_rx_tfm;
1215 u32 wep_iv;
1216
1217 /* see iface.c */
1218 struct list_head interfaces;
1219 struct mutex iflist_mtx;
1220
1221 /*
1222 * Key mutex, protects sdata's key_list and sta_info's
1223 * key pointers (write access, they're RCU.)
1224 */
1225 struct mutex key_mtx;
1226
1227 /* mutex for scan and work locking */
1228 struct mutex mtx;
1229
1230 /* Scanning and BSS list */
1231 unsigned long scanning;
1232 struct cfg80211_ssid scan_ssid;
1233 struct cfg80211_scan_request *int_scan_req;
1234 struct cfg80211_scan_request *scan_req;
1235 struct ieee80211_scan_request *hw_scan_req;
1236 struct cfg80211_chan_def scan_chandef;
1237 enum ieee80211_band hw_scan_band;
1238 int scan_channel_idx;
1239 int scan_ies_len;
1240 int hw_scan_ies_bufsize;
1241
1242 struct work_struct sched_scan_stopped_work;
1243 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1244 struct cfg80211_sched_scan_request *sched_scan_req;
1245
1246 unsigned long leave_oper_channel_time;
1247 enum mac80211_scan_state next_scan_state;
1248 struct delayed_work scan_work;
1249 struct ieee80211_sub_if_data __rcu *scan_sdata;
1250 /* For backward compatibility only -- do not use */
1251 struct cfg80211_chan_def _oper_chandef;
1252
1253 /* Temporary remain-on-channel for off-channel operations */
1254 struct ieee80211_channel *tmp_channel;
1255
1256 /* channel contexts */
1257 struct list_head chanctx_list;
1258 struct mutex chanctx_mtx;
1259
1260 /* SNMP counters */
1261 /* dot11CountersTable */
1262 u32 dot11TransmittedFragmentCount;
1263 u32 dot11MulticastTransmittedFrameCount;
1264 u32 dot11FailedCount;
1265 u32 dot11RetryCount;
1266 u32 dot11MultipleRetryCount;
1267 u32 dot11FrameDuplicateCount;
1268 u32 dot11ReceivedFragmentCount;
1269 u32 dot11MulticastReceivedFrameCount;
1270 u32 dot11TransmittedFrameCount;
1271
1272 #ifdef CONFIG_MAC80211_LEDS
1273 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1274 struct tpt_led_trigger *tpt_led_trigger;
1275 char tx_led_name[32], rx_led_name[32],
1276 assoc_led_name[32], radio_led_name[32];
1277 #endif
1278
1279 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1280 /* TX/RX handler statistics */
1281 unsigned int tx_handlers_drop;
1282 unsigned int tx_handlers_queued;
1283 unsigned int tx_handlers_drop_unencrypted;
1284 unsigned int tx_handlers_drop_fragment;
1285 unsigned int tx_handlers_drop_wep;
1286 unsigned int tx_handlers_drop_not_assoc;
1287 unsigned int tx_handlers_drop_unauth_port;
1288 unsigned int rx_handlers_drop;
1289 unsigned int rx_handlers_queued;
1290 unsigned int rx_handlers_drop_nullfunc;
1291 unsigned int rx_handlers_drop_defrag;
1292 unsigned int rx_handlers_drop_short;
1293 unsigned int tx_expand_skb_head;
1294 unsigned int tx_expand_skb_head_cloned;
1295 unsigned int rx_expand_skb_head;
1296 unsigned int rx_expand_skb_head2;
1297 unsigned int rx_handlers_fragments;
1298 unsigned int tx_status_drop;
1299 #define I802_DEBUG_INC(c) (c)++
1300 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1301 #define I802_DEBUG_INC(c) do { } while (0)
1302 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1303
1304
1305 int total_ps_buffered; /* total number of all buffered unicast and
1306 * multicast packets for power saving stations
1307 */
1308
1309 bool pspolling;
1310 bool offchannel_ps_enabled;
1311 /*
1312 * PS can only be enabled when we have exactly one managed
1313 * interface (and monitors) in PS, this then points there.
1314 */
1315 struct ieee80211_sub_if_data *ps_sdata;
1316 struct work_struct dynamic_ps_enable_work;
1317 struct work_struct dynamic_ps_disable_work;
1318 struct timer_list dynamic_ps_timer;
1319 struct notifier_block network_latency_notifier;
1320 struct notifier_block ifa_notifier;
1321 struct notifier_block ifa6_notifier;
1322
1323 /*
1324 * The dynamic ps timeout configured from user space via WEXT -
1325 * this will override whatever chosen by mac80211 internally.
1326 */
1327 int dynamic_ps_forced_timeout;
1328
1329 int user_power_level; /* in dBm, for all interfaces */
1330
1331 enum ieee80211_smps_mode smps_mode;
1332
1333 struct work_struct restart_work;
1334
1335 #ifdef CONFIG_MAC80211_DEBUGFS
1336 struct local_debugfsdentries {
1337 struct dentry *rcdir;
1338 struct dentry *keys;
1339 } debugfs;
1340 #endif
1341
1342 /*
1343 * Remain-on-channel support
1344 */
1345 struct list_head roc_list;
1346 struct work_struct hw_roc_start, hw_roc_done;
1347 unsigned long hw_roc_start_time;
1348 u64 roc_cookie_counter;
1349
1350 struct idr ack_status_frames;
1351 spinlock_t ack_status_lock;
1352
1353 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1354
1355 struct napi_struct *napi;
1356
1357 /* virtual monitor interface */
1358 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1359 struct cfg80211_chan_def monitor_chandef;
1360
1361 /* extended capabilities provided by mac80211 */
1362 u8 ext_capa[8];
1363 };
1364
1365 static inline struct ieee80211_sub_if_data *
1366 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1367 {
1368 return netdev_priv(dev);
1369 }
1370
1371 static inline struct ieee80211_sub_if_data *
1372 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1373 {
1374 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1375 }
1376
1377 /* this struct represents 802.11n's RA/TID combination */
1378 struct ieee80211_ra_tid {
1379 u8 ra[ETH_ALEN];
1380 u16 tid;
1381 };
1382
1383 /* this struct holds the value parsing from channel switch IE */
1384 struct ieee80211_csa_ie {
1385 struct cfg80211_chan_def chandef;
1386 u8 mode;
1387 u8 count;
1388 u8 ttl;
1389 u16 pre_value;
1390 };
1391
1392 /* Parsed Information Elements */
1393 struct ieee802_11_elems {
1394 const u8 *ie_start;
1395 size_t total_len;
1396
1397 /* pointers to IEs */
1398 const u8 *ssid;
1399 const u8 *supp_rates;
1400 const u8 *ds_params;
1401 const struct ieee80211_tim_ie *tim;
1402 const u8 *challenge;
1403 const u8 *rsn;
1404 const u8 *erp_info;
1405 const u8 *ext_supp_rates;
1406 const u8 *wmm_info;
1407 const u8 *wmm_param;
1408 const struct ieee80211_ht_cap *ht_cap_elem;
1409 const struct ieee80211_ht_operation *ht_operation;
1410 const struct ieee80211_vht_cap *vht_cap_elem;
1411 const struct ieee80211_vht_operation *vht_operation;
1412 const struct ieee80211_meshconf_ie *mesh_config;
1413 const u8 *mesh_id;
1414 const u8 *peering;
1415 const __le16 *awake_window;
1416 const u8 *preq;
1417 const u8 *prep;
1418 const u8 *perr;
1419 const struct ieee80211_rann_ie *rann;
1420 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1421 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1422 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1423 const u8 *country_elem;
1424 const u8 *pwr_constr_elem;
1425 const u8 *cisco_dtpc_elem;
1426 const struct ieee80211_timeout_interval_ie *timeout_int;
1427 const u8 *opmode_notif;
1428 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1429 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1430
1431 /* length of them, respectively */
1432 u8 ssid_len;
1433 u8 supp_rates_len;
1434 u8 tim_len;
1435 u8 challenge_len;
1436 u8 rsn_len;
1437 u8 ext_supp_rates_len;
1438 u8 wmm_info_len;
1439 u8 wmm_param_len;
1440 u8 mesh_id_len;
1441 u8 peering_len;
1442 u8 preq_len;
1443 u8 prep_len;
1444 u8 perr_len;
1445 u8 country_elem_len;
1446
1447 /* whether a parse error occurred while retrieving these elements */
1448 bool parse_error;
1449 };
1450
1451 static inline struct ieee80211_local *hw_to_local(
1452 struct ieee80211_hw *hw)
1453 {
1454 return container_of(hw, struct ieee80211_local, hw);
1455 }
1456
1457
1458 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1459 {
1460 return ether_addr_equal(raddr, addr) ||
1461 is_broadcast_ether_addr(raddr);
1462 }
1463
1464 static inline bool
1465 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1466 {
1467 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1468 status->flag & RX_FLAG_MACTIME_END);
1469 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1470 }
1471
1472 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1473 struct ieee80211_rx_status *status,
1474 unsigned int mpdu_len,
1475 unsigned int mpdu_offset);
1476 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1477 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1478 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1479 u32 changed);
1480 void ieee80211_configure_filter(struct ieee80211_local *local);
1481 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1482
1483 /* STA code */
1484 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1485 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1486 struct cfg80211_auth_request *req);
1487 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1488 struct cfg80211_assoc_request *req);
1489 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1490 struct cfg80211_deauth_request *req);
1491 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1492 struct cfg80211_disassoc_request *req);
1493 void ieee80211_send_pspoll(struct ieee80211_local *local,
1494 struct ieee80211_sub_if_data *sdata);
1495 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1496 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1497 int ieee80211_max_network_latency(struct notifier_block *nb,
1498 unsigned long data, void *dummy);
1499 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1500 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1501 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1502 struct sk_buff *skb);
1503 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1504 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1505 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1506 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1507 __le16 fc, bool acked);
1508 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1509 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1510 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1511
1512 /* IBSS code */
1513 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1514 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1515 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1516 const u8 *bssid, const u8 *addr, u32 supp_rates);
1517 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1518 struct cfg80211_ibss_params *params);
1519 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1520 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1521 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1522 struct sk_buff *skb);
1523 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1524 struct cfg80211_csa_settings *csa_settings);
1525 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1526 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1527
1528 /* OCB code */
1529 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1530 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1531 const u8 *bssid, const u8 *addr, u32 supp_rates);
1532 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1533 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1534 struct ocb_setup *setup);
1535 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1536
1537 /* mesh code */
1538 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1539 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1540 struct sk_buff *skb);
1541 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1542 struct cfg80211_csa_settings *csa_settings);
1543 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1544
1545 /* scan/BSS handling */
1546 void ieee80211_scan_work(struct work_struct *work);
1547 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1548 const u8 *ssid, u8 ssid_len,
1549 struct ieee80211_channel *chan,
1550 enum nl80211_bss_scan_width scan_width);
1551 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1552 struct cfg80211_scan_request *req);
1553 void ieee80211_scan_cancel(struct ieee80211_local *local);
1554 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1555 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1556
1557 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1558 struct ieee80211_bss *
1559 ieee80211_bss_info_update(struct ieee80211_local *local,
1560 struct ieee80211_rx_status *rx_status,
1561 struct ieee80211_mgmt *mgmt,
1562 size_t len,
1563 struct ieee802_11_elems *elems,
1564 struct ieee80211_channel *channel);
1565 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1566 struct ieee80211_bss *bss);
1567
1568 /* scheduled scan handling */
1569 int
1570 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1571 struct cfg80211_sched_scan_request *req);
1572 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1573 struct cfg80211_sched_scan_request *req);
1574 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1575 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1576 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1577
1578 /* off-channel helpers */
1579 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1580 void ieee80211_offchannel_return(struct ieee80211_local *local);
1581 void ieee80211_roc_setup(struct ieee80211_local *local);
1582 void ieee80211_start_next_roc(struct ieee80211_local *local);
1583 void ieee80211_roc_purge(struct ieee80211_local *local,
1584 struct ieee80211_sub_if_data *sdata);
1585 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1586 void ieee80211_sw_roc_work(struct work_struct *work);
1587 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1588
1589 /* channel switch handling */
1590 void ieee80211_csa_finalize_work(struct work_struct *work);
1591 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1592 struct cfg80211_csa_settings *params);
1593
1594 /* interface handling */
1595 int ieee80211_iface_init(void);
1596 void ieee80211_iface_exit(void);
1597 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1598 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1599 struct vif_params *params);
1600 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1601 enum nl80211_iftype type);
1602 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1603 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1604 u32 ieee80211_idle_off(struct ieee80211_local *local);
1605 void ieee80211_recalc_idle(struct ieee80211_local *local);
1606 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1607 const int offset);
1608 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1609 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1610 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1611 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1612
1613 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1614 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1615
1616 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1617 {
1618 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1619 }
1620
1621 /* tx handling */
1622 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1623 void ieee80211_tx_pending(unsigned long data);
1624 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1625 struct net_device *dev);
1626 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1627 struct net_device *dev);
1628 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1629 struct sk_buff_head *skbs);
1630
1631 /* HT */
1632 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1633 struct ieee80211_sta_ht_cap *ht_cap);
1634 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1635 struct ieee80211_supported_band *sband,
1636 const struct ieee80211_ht_cap *ht_cap_ie,
1637 struct sta_info *sta);
1638 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1639 const u8 *da, u16 tid,
1640 u16 initiator, u16 reason_code);
1641 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1642 enum ieee80211_smps_mode smps, const u8 *da,
1643 const u8 *bssid);
1644 void ieee80211_request_smps_ap_work(struct work_struct *work);
1645 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1646 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1647 enum ieee80211_smps_mode smps_mode_new);
1648
1649 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1650 u16 initiator, u16 reason, bool stop);
1651 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1652 u16 initiator, u16 reason, bool stop);
1653 void __ieee80211_start_rx_ba_session(struct sta_info *sta,
1654 u8 dialog_token, u16 timeout,
1655 u16 start_seq_num, u16 ba_policy, u16 tid,
1656 u16 buf_size, bool tx, bool auto_seq);
1657 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1658 enum ieee80211_agg_stop_reason reason);
1659 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1660 struct sta_info *sta,
1661 struct ieee80211_mgmt *mgmt, size_t len);
1662 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1663 struct sta_info *sta,
1664 struct ieee80211_mgmt *mgmt,
1665 size_t len);
1666 void ieee80211_process_addba_request(struct ieee80211_local *local,
1667 struct sta_info *sta,
1668 struct ieee80211_mgmt *mgmt,
1669 size_t len);
1670
1671 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1672 enum ieee80211_agg_stop_reason reason);
1673 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1674 enum ieee80211_agg_stop_reason reason);
1675 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1676 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1677 void ieee80211_ba_session_work(struct work_struct *work);
1678 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1679 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1680
1681 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1682
1683 /* VHT */
1684 void
1685 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1686 struct ieee80211_supported_band *sband,
1687 const struct ieee80211_vht_cap *vht_cap_ie,
1688 struct sta_info *sta);
1689 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1690 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1691 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1692 struct sta_info *sta, u8 opmode,
1693 enum ieee80211_band band, bool nss_only);
1694 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1695 struct sta_info *sta, u8 opmode,
1696 enum ieee80211_band band, bool nss_only);
1697 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1698 struct ieee80211_sta_vht_cap *vht_cap);
1699
1700 /* Spectrum management */
1701 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1702 struct ieee80211_mgmt *mgmt,
1703 size_t len);
1704 /**
1705 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1706 * @sdata: the sdata of the interface which has received the frame
1707 * @elems: parsed 802.11 elements received with the frame
1708 * @beacon: indicates if the frame was a beacon or probe response
1709 * @current_band: indicates the current band
1710 * @sta_flags: contains information about own capabilities and restrictions
1711 * to decide which channel switch announcements can be accepted. Only the
1712 * following subset of &enum ieee80211_sta_flags are evaluated:
1713 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1714 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1715 * %IEEE80211_STA_DISABLE_160MHZ.
1716 * @bssid: the currently connected bssid (for reporting)
1717 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1718 All of them will be filled with if success only.
1719 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1720 */
1721 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1722 struct ieee802_11_elems *elems, bool beacon,
1723 enum ieee80211_band current_band,
1724 u32 sta_flags, u8 *bssid,
1725 struct ieee80211_csa_ie *csa_ie);
1726
1727 /* Suspend/resume and hw reconfiguration */
1728 int ieee80211_reconfig(struct ieee80211_local *local);
1729 void ieee80211_stop_device(struct ieee80211_local *local);
1730
1731 int __ieee80211_suspend(struct ieee80211_hw *hw,
1732 struct cfg80211_wowlan *wowlan);
1733
1734 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1735 {
1736 struct ieee80211_local *local = hw_to_local(hw);
1737
1738 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1739 "%s: resume with hardware scan still in progress\n",
1740 wiphy_name(hw->wiphy));
1741
1742 return ieee80211_reconfig(hw_to_local(hw));
1743 }
1744
1745 /* utility functions/constants */
1746 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1747 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1748 enum nl80211_iftype type);
1749 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1750 int rate, int erp, int short_preamble,
1751 int shift);
1752 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1753 struct ieee80211_hdr *hdr, const u8 *tsc,
1754 gfp_t gfp);
1755 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1756 bool bss_notify);
1757 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1758 enum ieee80211_band band);
1759
1760 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1761 struct sk_buff *skb, int tid,
1762 enum ieee80211_band band);
1763
1764 static inline void
1765 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1766 struct sk_buff *skb, int tid,
1767 enum ieee80211_band band)
1768 {
1769 rcu_read_lock();
1770 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1771 rcu_read_unlock();
1772 }
1773
1774 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1775 struct sk_buff *skb, int tid)
1776 {
1777 struct ieee80211_chanctx_conf *chanctx_conf;
1778
1779 rcu_read_lock();
1780 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1781 if (WARN_ON(!chanctx_conf)) {
1782 rcu_read_unlock();
1783 kfree_skb(skb);
1784 return;
1785 }
1786
1787 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1788 chanctx_conf->def.chan->band);
1789 rcu_read_unlock();
1790 }
1791
1792 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1793 struct sk_buff *skb)
1794 {
1795 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1796 ieee80211_tx_skb_tid(sdata, skb, 7);
1797 }
1798
1799 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1800 struct ieee802_11_elems *elems,
1801 u64 filter, u32 crc);
1802 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1803 bool action,
1804 struct ieee802_11_elems *elems)
1805 {
1806 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1807 }
1808
1809 static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames)
1810 {
1811 struct sk_buff *tail = skb_peek_tail(frames);
1812 struct ieee80211_rx_status *status;
1813
1814 if (!tail)
1815 return false;
1816
1817 status = IEEE80211_SKB_RXCB(tail);
1818 if (status->flag & RX_FLAG_AMSDU_MORE)
1819 return false;
1820
1821 return true;
1822 }
1823
1824 extern const int ieee802_1d_to_ac[8];
1825
1826 static inline int ieee80211_ac_from_tid(int tid)
1827 {
1828 return ieee802_1d_to_ac[tid & 7];
1829 }
1830
1831 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1832 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1833 void ieee80211_dynamic_ps_timer(unsigned long data);
1834 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1835 struct ieee80211_sub_if_data *sdata,
1836 int powersave);
1837 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1838 struct ieee80211_hdr *hdr);
1839 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1840 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
1841
1842 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1843 unsigned long queues,
1844 enum queue_stop_reason reason,
1845 bool refcounted);
1846 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1847 struct ieee80211_sub_if_data *sdata,
1848 enum queue_stop_reason reason);
1849 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1850 struct ieee80211_sub_if_data *sdata,
1851 enum queue_stop_reason reason);
1852 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1853 unsigned long queues,
1854 enum queue_stop_reason reason,
1855 bool refcounted);
1856 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1857 enum queue_stop_reason reason,
1858 bool refcounted);
1859 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1860 enum queue_stop_reason reason,
1861 bool refcounted);
1862 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1863 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1864 struct sk_buff *skb);
1865 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1866 struct sk_buff_head *skbs);
1867 void ieee80211_flush_queues(struct ieee80211_local *local,
1868 struct ieee80211_sub_if_data *sdata);
1869
1870 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1871 u16 transaction, u16 auth_alg, u16 status,
1872 const u8 *extra, size_t extra_len, const u8 *bssid,
1873 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1874 u32 tx_flags);
1875 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1876 const u8 *bssid, u16 stype, u16 reason,
1877 bool send_frame, u8 *frame_buf);
1878 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1879 size_t buffer_len,
1880 struct ieee80211_scan_ies *ie_desc,
1881 const u8 *ie, size_t ie_len,
1882 u8 bands_used, u32 *rate_masks,
1883 struct cfg80211_chan_def *chandef);
1884 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1885 u8 *dst, u32 ratemask,
1886 struct ieee80211_channel *chan,
1887 const u8 *ssid, size_t ssid_len,
1888 const u8 *ie, size_t ie_len,
1889 bool directed);
1890 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1891 const u8 *ssid, size_t ssid_len,
1892 const u8 *ie, size_t ie_len,
1893 u32 ratemask, bool directed, u32 tx_flags,
1894 struct ieee80211_channel *channel, bool scan);
1895
1896 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1897 struct ieee802_11_elems *elems,
1898 enum ieee80211_band band, u32 *basic_rates);
1899 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1900 enum ieee80211_smps_mode smps_mode);
1901 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1902 enum ieee80211_smps_mode smps_mode);
1903 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1904 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
1905
1906 size_t ieee80211_ie_split_ric(const u8 *ies, size_t ielen,
1907 const u8 *ids, int n_ids,
1908 const u8 *after_ric, int n_after_ric,
1909 size_t offset);
1910 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1911 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1912 u16 cap);
1913 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1914 const struct cfg80211_chan_def *chandef,
1915 u16 prot_mode);
1916 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1917 u32 cap);
1918 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1919 const struct ieee80211_supported_band *sband,
1920 const u8 *srates, int srates_len, u32 *rates);
1921 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1922 struct sk_buff *skb, bool need_basic,
1923 enum ieee80211_band band);
1924 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1925 struct sk_buff *skb, bool need_basic,
1926 enum ieee80211_band band);
1927 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
1928
1929 /* channel management */
1930 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1931 const struct ieee80211_ht_operation *ht_oper,
1932 struct cfg80211_chan_def *chandef);
1933 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
1934
1935 int __must_check
1936 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1937 const struct cfg80211_chan_def *chandef,
1938 enum ieee80211_chanctx_mode mode);
1939 int __must_check
1940 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
1941 const struct cfg80211_chan_def *chandef,
1942 enum ieee80211_chanctx_mode mode,
1943 bool radar_required);
1944 int __must_check
1945 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
1946 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
1947
1948 int __must_check
1949 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
1950 const struct cfg80211_chan_def *chandef,
1951 u32 *changed);
1952 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
1953 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
1954 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
1955 bool clear);
1956 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
1957 struct ieee80211_chanctx *ctx);
1958
1959 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
1960 struct ieee80211_chanctx *chanctx);
1961 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
1962 struct ieee80211_chanctx *ctx);
1963
1964 void ieee80211_dfs_cac_timer(unsigned long data);
1965 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
1966 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
1967 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
1968 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
1969 struct cfg80211_csa_settings *csa_settings);
1970
1971 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
1972 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
1973 const struct ieee80211_cipher_scheme *
1974 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
1975 enum nl80211_iftype iftype);
1976 int ieee80211_cs_headroom(struct ieee80211_local *local,
1977 struct cfg80211_crypto_settings *crypto,
1978 enum nl80211_iftype iftype);
1979 void ieee80211_recalc_dtim(struct ieee80211_local *local,
1980 struct ieee80211_sub_if_data *sdata);
1981 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
1982 const struct cfg80211_chan_def *chandef,
1983 enum ieee80211_chanctx_mode chanmode,
1984 u8 radar_detect);
1985 int ieee80211_max_num_channels(struct ieee80211_local *local);
1986
1987 /* TDLS */
1988 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
1989 const u8 *peer, u8 action_code, u8 dialog_token,
1990 u16 status_code, u32 peer_capability,
1991 bool initiator, const u8 *extra_ies,
1992 size_t extra_ies_len);
1993 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
1994 const u8 *peer, enum nl80211_tdls_operation oper);
1995 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
1996
1997 extern const struct ethtool_ops ieee80211_ethtool_ops;
1998
1999 #ifdef CONFIG_MAC80211_NOINLINE
2000 #define debug_noinline noinline
2001 #else
2002 #define debug_noinline
2003 #endif
2004
2005 #endif /* IEEE80211_I_H */
Linux with added FPC-III support