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dmfe: kill DEVICE define
[linux/fpc-iii.git] / net / mac80211 / ieee80211_i.h
blob9438c940668719cfea2e1f4b6e03ab5c88c2211d
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 check_sequential_pn; /* needed for CCMP/GCMP */
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 struct mesh_table *mesh_paths;
701 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */
702 int mesh_paths_generation;
703 int mpp_paths_generation;
704 };
705
706 #ifdef CONFIG_MAC80211_MESH
707 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
708 do { (msh)->mshstats.name++; } while (0)
709 #else
710 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
711 do { } while (0)
712 #endif
713
714 /**
715 * enum ieee80211_sub_if_data_flags - virtual interface flags
716 *
717 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
718 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
719 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
720 * associated stations and deliver multicast frames both
721 * back to wireless media and to the local net stack.
722 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
723 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
724 */
725 enum ieee80211_sub_if_data_flags {
726 IEEE80211_SDATA_ALLMULTI = BIT(0),
727 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
728 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
729 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
730 IEEE80211_SDATA_IN_DRIVER = BIT(5),
731 };
732
733 /**
734 * enum ieee80211_sdata_state_bits - virtual interface state bits
735 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
736 * mirrors netif_running() but is separate for interface type
737 * change handling while the interface is up
738 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
739 * mode, so queues are stopped
740 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
741 * to offchannel, reset when offchannel returns
742 */
743 enum ieee80211_sdata_state_bits {
744 SDATA_STATE_RUNNING,
745 SDATA_STATE_OFFCHANNEL,
746 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
747 };
748
749 /**
750 * enum ieee80211_chanctx_mode - channel context configuration mode
751 *
752 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
753 * multiple interfaces
754 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
755 * only by a single interface. This can be used for example for
756 * non-fixed channel IBSS.
757 */
758 enum ieee80211_chanctx_mode {
759 IEEE80211_CHANCTX_SHARED,
760 IEEE80211_CHANCTX_EXCLUSIVE
761 };
762
763 /**
764 * enum ieee80211_chanctx_replace_state - channel context replacement state
765 *
766 * This is used for channel context in-place reservations that require channel
767 * context switch/swap.
768 *
769 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
770 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
771 * by a (not yet registered) channel context pointed by %replace_ctx.
772 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
773 * replaces an existing channel context pointed to by %replace_ctx.
774 */
775 enum ieee80211_chanctx_replace_state {
776 IEEE80211_CHANCTX_REPLACE_NONE,
777 IEEE80211_CHANCTX_WILL_BE_REPLACED,
778 IEEE80211_CHANCTX_REPLACES_OTHER,
779 };
780
781 struct ieee80211_chanctx {
782 struct list_head list;
783 struct rcu_head rcu_head;
784
785 struct list_head assigned_vifs;
786 struct list_head reserved_vifs;
787
788 enum ieee80211_chanctx_replace_state replace_state;
789 struct ieee80211_chanctx *replace_ctx;
790
791 enum ieee80211_chanctx_mode mode;
792 bool driver_present;
793
794 struct ieee80211_chanctx_conf conf;
795 };
796
797 struct mac80211_qos_map {
798 struct cfg80211_qos_map qos_map;
799 struct rcu_head rcu_head;
800 };
801
802 enum txq_info_flags {
803 IEEE80211_TXQ_STOP,
804 IEEE80211_TXQ_AMPDU,
805 IEEE80211_TXQ_NO_AMSDU,
806 };
807
808 struct txq_info {
809 struct sk_buff_head queue;
810 unsigned long flags;
811 unsigned long byte_cnt;
812
813 /* keep last! */
814 struct ieee80211_txq txq;
815 };
816
817 struct ieee80211_sub_if_data {
818 struct list_head list;
819
820 struct wireless_dev wdev;
821
822 /* keys */
823 struct list_head key_list;
824
825 /* count for keys needing tailroom space allocation */
826 int crypto_tx_tailroom_needed_cnt;
827 int crypto_tx_tailroom_pending_dec;
828 struct delayed_work dec_tailroom_needed_wk;
829
830 struct net_device *dev;
831 struct ieee80211_local *local;
832
833 unsigned int flags;
834
835 unsigned long state;
836
837 char name[IFNAMSIZ];
838
839 /* Fragment table for host-based reassembly */
840 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
841 unsigned int fragment_next;
842
843 /* TID bitmap for NoAck policy */
844 u16 noack_map;
845
846 /* bit field of ACM bits (BIT(802.1D tag)) */
847 u8 wmm_acm;
848
849 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
850 struct ieee80211_key __rcu *default_unicast_key;
851 struct ieee80211_key __rcu *default_multicast_key;
852 struct ieee80211_key __rcu *default_mgmt_key;
853
854 u16 sequence_number;
855 __be16 control_port_protocol;
856 bool control_port_no_encrypt;
857 int encrypt_headroom;
858
859 atomic_t txqs_len[IEEE80211_NUM_ACS];
860 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
861 struct mac80211_qos_map __rcu *qos_map;
862
863 struct work_struct csa_finalize_work;
864 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
865 struct cfg80211_chan_def csa_chandef;
866
867 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
868 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
869
870 /* context reservation -- protected with chanctx_mtx */
871 struct ieee80211_chanctx *reserved_chanctx;
872 struct cfg80211_chan_def reserved_chandef;
873 bool reserved_radar_required;
874 bool reserved_ready;
875
876 /* used to reconfigure hardware SM PS */
877 struct work_struct recalc_smps;
878
879 struct work_struct work;
880 struct sk_buff_head skb_queue;
881
882 u8 needed_rx_chains;
883 enum ieee80211_smps_mode smps_mode;
884
885 int user_power_level; /* in dBm */
886 int ap_power_level; /* in dBm */
887
888 bool radar_required;
889 struct delayed_work dfs_cac_timer_work;
890
891 /*
892 * AP this belongs to: self in AP mode and
893 * corresponding AP in VLAN mode, NULL for
894 * all others (might be needed later in IBSS)
895 */
896 struct ieee80211_if_ap *bss;
897
898 /* bitmap of allowed (non-MCS) rate indexes for rate control */
899 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
900
901 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
902 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
903
904 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
905 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
906
907 union {
908 struct ieee80211_if_ap ap;
909 struct ieee80211_if_wds wds;
910 struct ieee80211_if_vlan vlan;
911 struct ieee80211_if_managed mgd;
912 struct ieee80211_if_ibss ibss;
913 struct ieee80211_if_mesh mesh;
914 struct ieee80211_if_ocb ocb;
915 u32 mntr_flags;
916 } u;
917
918 #ifdef CONFIG_MAC80211_DEBUGFS
919 struct {
920 struct dentry *subdir_stations;
921 struct dentry *default_unicast_key;
922 struct dentry *default_multicast_key;
923 struct dentry *default_mgmt_key;
924 } debugfs;
925 #endif
926
927 /* must be last, dynamically sized area in this! */
928 struct ieee80211_vif vif;
929 };
930
931 static inline
932 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
933 {
934 return container_of(p, struct ieee80211_sub_if_data, vif);
935 }
936
937 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
938 __acquires(&sdata->wdev.mtx)
939 {
940 mutex_lock(&sdata->wdev.mtx);
941 __acquire(&sdata->wdev.mtx);
942 }
943
944 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
945 __releases(&sdata->wdev.mtx)
946 {
947 mutex_unlock(&sdata->wdev.mtx);
948 __release(&sdata->wdev.mtx);
949 }
950
951 #define sdata_dereference(p, sdata) \
952 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
953
954 static inline void
955 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
956 {
957 lockdep_assert_held(&sdata->wdev.mtx);
958 }
959
960 static inline enum nl80211_band
961 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
962 {
963 enum nl80211_band band = NL80211_BAND_2GHZ;
964 struct ieee80211_chanctx_conf *chanctx_conf;
965
966 rcu_read_lock();
967 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
968 if (!WARN_ON(!chanctx_conf))
969 band = chanctx_conf->def.chan->band;
970 rcu_read_unlock();
971
972 return band;
973 }
974
975 static inline int
976 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
977 {
978 switch (chandef->width) {
979 case NL80211_CHAN_WIDTH_5:
980 return 2;
981 case NL80211_CHAN_WIDTH_10:
982 return 1;
983 default:
984 return 0;
985 }
986 }
987
988 static inline int
989 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
990 {
991 struct ieee80211_chanctx_conf *chanctx_conf;
992 int shift = 0;
993
994 rcu_read_lock();
995 chanctx_conf = rcu_dereference(vif->chanctx_conf);
996 if (chanctx_conf)
997 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
998 rcu_read_unlock();
999
1000 return shift;
1001 }
1002
1003 struct ieee80211_rx_agg {
1004 u8 addr[ETH_ALEN];
1005 u16 tid;
1006 };
1007
1008 enum sdata_queue_type {
1009 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
1010 IEEE80211_SDATA_QUEUE_AGG_START = 1,
1011 IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
1012 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3,
1013 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4,
1014 };
1015
1016 enum {
1017 IEEE80211_RX_MSG = 1,
1018 IEEE80211_TX_STATUS_MSG = 2,
1019 };
1020
1021 enum queue_stop_reason {
1022 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1023 IEEE80211_QUEUE_STOP_REASON_PS,
1024 IEEE80211_QUEUE_STOP_REASON_CSA,
1025 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1026 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1027 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1028 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1029 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1030 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1031 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1032
1033 IEEE80211_QUEUE_STOP_REASONS,
1034 };
1035
1036 #ifdef CONFIG_MAC80211_LEDS
1037 struct tpt_led_trigger {
1038 char name[32];
1039 const struct ieee80211_tpt_blink *blink_table;
1040 unsigned int blink_table_len;
1041 struct timer_list timer;
1042 unsigned long prev_traffic;
1043 unsigned long tx_bytes, rx_bytes;
1044 unsigned int active, want;
1045 bool running;
1046 };
1047 #endif
1048
1049 /**
1050 * mac80211 scan flags - currently active scan mode
1051 *
1052 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1053 * well be on the operating channel
1054 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1055 * determine if we are on the operating channel or not
1056 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1057 * channel. This should not interrupt normal traffic.
1058 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1059 * that the scan completed.
1060 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1061 * a scan complete for an aborted scan.
1062 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1063 * cancelled.
1064 */
1065 enum {
1066 SCAN_SW_SCANNING,
1067 SCAN_HW_SCANNING,
1068 SCAN_ONCHANNEL_SCANNING,
1069 SCAN_COMPLETED,
1070 SCAN_ABORTED,
1071 SCAN_HW_CANCELLED,
1072 };
1073
1074 /**
1075 * enum mac80211_scan_state - scan state machine states
1076 *
1077 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1078 * determines if we should keep on scanning or switch back to the
1079 * operating channel
1080 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1081 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1082 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1083 * send out data
1084 * @SCAN_RESUME: Resume the scan and scan the next channel
1085 * @SCAN_ABORT: Abort the scan and go back to operating channel
1086 */
1087 enum mac80211_scan_state {
1088 SCAN_DECISION,
1089 SCAN_SET_CHANNEL,
1090 SCAN_SEND_PROBE,
1091 SCAN_SUSPEND,
1092 SCAN_RESUME,
1093 SCAN_ABORT,
1094 };
1095
1096 struct ieee80211_local {
1097 /* embed the driver visible part.
1098 * don't cast (use the static inlines below), but we keep
1099 * it first anyway so they become a no-op */
1100 struct ieee80211_hw hw;
1101
1102 const struct ieee80211_ops *ops;
1103
1104 /*
1105 * private workqueue to mac80211. mac80211 makes this accessible
1106 * via ieee80211_queue_work()
1107 */
1108 struct workqueue_struct *workqueue;
1109
1110 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1111 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1112 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1113 spinlock_t queue_stop_reason_lock;
1114
1115 int open_count;
1116 int monitors, cooked_mntrs;
1117 /* number of interfaces with corresponding FIF_ flags */
1118 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1119 fif_probe_req;
1120 int probe_req_reg;
1121 unsigned int filter_flags; /* FIF_* */
1122
1123 bool wiphy_ciphers_allocated;
1124
1125 bool use_chanctx;
1126
1127 /* protects the aggregated multicast list and filter calls */
1128 spinlock_t filter_lock;
1129
1130 /* used for uploading changed mc list */
1131 struct work_struct reconfig_filter;
1132
1133 /* aggregated multicast list */
1134 struct netdev_hw_addr_list mc_list;
1135
1136 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1137
1138 /*
1139 * suspended is true if we finished all the suspend _and_ we have
1140 * not yet come up from resume. This is to be used by mac80211
1141 * to ensure driver sanity during suspend and mac80211's own
1142 * sanity. It can eventually be used for WoW as well.
1143 */
1144 bool suspended;
1145
1146 /*
1147 * Resuming is true while suspended, but when we're reprogramming the
1148 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1149 * again even though some other parts of the stack are still suspended
1150 * and we still drop received frames to avoid waking the stack.
1151 */
1152 bool resuming;
1153
1154 /*
1155 * quiescing is true during the suspend process _only_ to
1156 * ease timer cancelling etc.
1157 */
1158 bool quiescing;
1159
1160 /* device is started */
1161 bool started;
1162
1163 /* device is during a HW reconfig */
1164 bool in_reconfig;
1165
1166 /* wowlan is enabled -- don't reconfig on resume */
1167 bool wowlan;
1168
1169 struct work_struct radar_detected_work;
1170
1171 /* number of RX chains the hardware has */
1172 u8 rx_chains;
1173
1174 int tx_headroom; /* required headroom for hardware/radiotap */
1175
1176 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1177 * added to skb_queue will be processed, but frames in
1178 * skb_queue_unreliable may be dropped if the total length of these
1179 * queues increases over the limit. */
1180 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1181 struct tasklet_struct tasklet;
1182 struct sk_buff_head skb_queue;
1183 struct sk_buff_head skb_queue_unreliable;
1184
1185 spinlock_t rx_path_lock;
1186
1187 /* Station data */
1188 /*
1189 * The mutex only protects the list, hash table and
1190 * counter, reads are done with RCU.
1191 */
1192 struct mutex sta_mtx;
1193 spinlock_t tim_lock;
1194 unsigned long num_sta;
1195 struct list_head sta_list;
1196 struct rhashtable sta_hash;
1197 struct timer_list sta_cleanup;
1198 int sta_generation;
1199
1200 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1201 struct tasklet_struct tx_pending_tasklet;
1202
1203 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1204
1205 /* number of interfaces with allmulti RX */
1206 atomic_t iff_allmultis;
1207
1208 struct rate_control_ref *rate_ctrl;
1209
1210 struct crypto_cipher *wep_tx_tfm;
1211 struct crypto_cipher *wep_rx_tfm;
1212 u32 wep_iv;
1213
1214 /* see iface.c */
1215 struct list_head interfaces;
1216 struct mutex iflist_mtx;
1217
1218 /*
1219 * Key mutex, protects sdata's key_list and sta_info's
1220 * key pointers (write access, they're RCU.)
1221 */
1222 struct mutex key_mtx;
1223
1224 /* mutex for scan and work locking */
1225 struct mutex mtx;
1226
1227 /* Scanning and BSS list */
1228 unsigned long scanning;
1229 struct cfg80211_ssid scan_ssid;
1230 struct cfg80211_scan_request *int_scan_req;
1231 struct cfg80211_scan_request __rcu *scan_req;
1232 struct ieee80211_scan_request *hw_scan_req;
1233 struct cfg80211_chan_def scan_chandef;
1234 enum nl80211_band hw_scan_band;
1235 int scan_channel_idx;
1236 int scan_ies_len;
1237 int hw_scan_ies_bufsize;
1238
1239 struct work_struct sched_scan_stopped_work;
1240 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1241 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1242 u8 scan_addr[ETH_ALEN];
1243
1244 unsigned long leave_oper_channel_time;
1245 enum mac80211_scan_state next_scan_state;
1246 struct delayed_work scan_work;
1247 struct ieee80211_sub_if_data __rcu *scan_sdata;
1248 /* For backward compatibility only -- do not use */
1249 struct cfg80211_chan_def _oper_chandef;
1250
1251 /* Temporary remain-on-channel for off-channel operations */
1252 struct ieee80211_channel *tmp_channel;
1253
1254 /* channel contexts */
1255 struct list_head chanctx_list;
1256 struct mutex chanctx_mtx;
1257
1258 #ifdef CONFIG_MAC80211_LEDS
1259 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1260 struct led_trigger tpt_led;
1261 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1262 atomic_t radio_led_active, tpt_led_active;
1263 struct tpt_led_trigger *tpt_led_trigger;
1264 #endif
1265
1266 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1267 /* SNMP counters */
1268 /* dot11CountersTable */
1269 u32 dot11TransmittedFragmentCount;
1270 u32 dot11MulticastTransmittedFrameCount;
1271 u32 dot11FailedCount;
1272 u32 dot11RetryCount;
1273 u32 dot11MultipleRetryCount;
1274 u32 dot11FrameDuplicateCount;
1275 u32 dot11ReceivedFragmentCount;
1276 u32 dot11MulticastReceivedFrameCount;
1277 u32 dot11TransmittedFrameCount;
1278
1279 /* TX/RX handler statistics */
1280 unsigned int tx_handlers_drop;
1281 unsigned int tx_handlers_queued;
1282 unsigned int tx_handlers_drop_wep;
1283 unsigned int tx_handlers_drop_not_assoc;
1284 unsigned int tx_handlers_drop_unauth_port;
1285 unsigned int rx_handlers_drop;
1286 unsigned int rx_handlers_queued;
1287 unsigned int rx_handlers_drop_nullfunc;
1288 unsigned int rx_handlers_drop_defrag;
1289 unsigned int tx_expand_skb_head;
1290 unsigned int tx_expand_skb_head_cloned;
1291 unsigned int rx_expand_skb_head_defrag;
1292 unsigned int rx_handlers_fragments;
1293 unsigned int tx_status_drop;
1294 #define I802_DEBUG_INC(c) (c)++
1295 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1296 #define I802_DEBUG_INC(c) do { } while (0)
1297 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1298
1299
1300 int total_ps_buffered; /* total number of all buffered unicast and
1301 * multicast packets for power saving stations
1302 */
1303
1304 bool pspolling;
1305 bool offchannel_ps_enabled;
1306 /*
1307 * PS can only be enabled when we have exactly one managed
1308 * interface (and monitors) in PS, this then points there.
1309 */
1310 struct ieee80211_sub_if_data *ps_sdata;
1311 struct work_struct dynamic_ps_enable_work;
1312 struct work_struct dynamic_ps_disable_work;
1313 struct timer_list dynamic_ps_timer;
1314 struct notifier_block ifa_notifier;
1315 struct notifier_block ifa6_notifier;
1316
1317 /*
1318 * The dynamic ps timeout configured from user space via WEXT -
1319 * this will override whatever chosen by mac80211 internally.
1320 */
1321 int dynamic_ps_forced_timeout;
1322
1323 int user_power_level; /* in dBm, for all interfaces */
1324
1325 enum ieee80211_smps_mode smps_mode;
1326
1327 struct work_struct restart_work;
1328
1329 #ifdef CONFIG_MAC80211_DEBUGFS
1330 struct local_debugfsdentries {
1331 struct dentry *rcdir;
1332 struct dentry *keys;
1333 } debugfs;
1334 #endif
1335
1336 /*
1337 * Remain-on-channel support
1338 */
1339 struct delayed_work roc_work;
1340 struct list_head roc_list;
1341 struct work_struct hw_roc_start, hw_roc_done;
1342 unsigned long hw_roc_start_time;
1343 u64 roc_cookie_counter;
1344
1345 struct idr ack_status_frames;
1346 spinlock_t ack_status_lock;
1347
1348 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1349
1350 /* virtual monitor interface */
1351 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1352 struct cfg80211_chan_def monitor_chandef;
1353
1354 /* extended capabilities provided by mac80211 */
1355 u8 ext_capa[8];
1356
1357 /* TDLS channel switch */
1358 struct work_struct tdls_chsw_work;
1359 struct sk_buff_head skb_queue_tdls_chsw;
1360 };
1361
1362 static inline struct ieee80211_sub_if_data *
1363 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1364 {
1365 return netdev_priv(dev);
1366 }
1367
1368 static inline struct ieee80211_sub_if_data *
1369 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1370 {
1371 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1372 }
1373
1374 /* this struct represents 802.11n's RA/TID combination */
1375 struct ieee80211_ra_tid {
1376 u8 ra[ETH_ALEN];
1377 u16 tid;
1378 };
1379
1380 /* this struct holds the value parsing from channel switch IE */
1381 struct ieee80211_csa_ie {
1382 struct cfg80211_chan_def chandef;
1383 u8 mode;
1384 u8 count;
1385 u8 ttl;
1386 u16 pre_value;
1387 };
1388
1389 /* Parsed Information Elements */
1390 struct ieee802_11_elems {
1391 const u8 *ie_start;
1392 size_t total_len;
1393
1394 /* pointers to IEs */
1395 const struct ieee80211_tdls_lnkie *lnk_id;
1396 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1397 const u8 *ext_capab;
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 ext_capab_len;
1433 u8 ssid_len;
1434 u8 supp_rates_len;
1435 u8 tim_len;
1436 u8 challenge_len;
1437 u8 rsn_len;
1438 u8 ext_supp_rates_len;
1439 u8 wmm_info_len;
1440 u8 wmm_param_len;
1441 u8 mesh_id_len;
1442 u8 peering_len;
1443 u8 preq_len;
1444 u8 prep_len;
1445 u8 perr_len;
1446 u8 country_elem_len;
1447
1448 /* whether a parse error occurred while retrieving these elements */
1449 bool parse_error;
1450 };
1451
1452 static inline struct ieee80211_local *hw_to_local(
1453 struct ieee80211_hw *hw)
1454 {
1455 return container_of(hw, struct ieee80211_local, hw);
1456 }
1457
1458 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1459 {
1460 return container_of(txq, struct txq_info, txq);
1461 }
1462
1463 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1464 {
1465 return ether_addr_equal(raddr, addr) ||
1466 is_broadcast_ether_addr(raddr);
1467 }
1468
1469 static inline bool
1470 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1471 {
1472 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1473 status->flag & RX_FLAG_MACTIME_END);
1474 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END))
1475 return true;
1476 /* can't handle HT/VHT preamble yet */
1477 if (status->flag & RX_FLAG_MACTIME_PLCP_START &&
1478 !(status->flag & (RX_FLAG_HT | RX_FLAG_VHT)))
1479 return true;
1480 return false;
1481 }
1482
1483 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1484 struct ieee80211_rx_status *status,
1485 unsigned int mpdu_len,
1486 unsigned int mpdu_offset);
1487 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1488 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1489 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1490 u32 changed);
1491 void ieee80211_configure_filter(struct ieee80211_local *local);
1492 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1493
1494 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1495 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1496 u64 *cookie, gfp_t gfp);
1497
1498 void ieee80211_check_fast_rx(struct sta_info *sta);
1499 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1500 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1501 void ieee80211_clear_fast_rx(struct sta_info *sta);
1502
1503 /* STA code */
1504 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1505 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1506 struct cfg80211_auth_request *req);
1507 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1508 struct cfg80211_assoc_request *req);
1509 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1510 struct cfg80211_deauth_request *req);
1511 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1512 struct cfg80211_disassoc_request *req);
1513 void ieee80211_send_pspoll(struct ieee80211_local *local,
1514 struct ieee80211_sub_if_data *sdata);
1515 void ieee80211_recalc_ps(struct ieee80211_local *local);
1516 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1517 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1518 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1519 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1520 struct sk_buff *skb);
1521 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1522 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1523 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1524 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1525 __le16 fc, bool acked);
1526 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1527 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1528 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1529
1530 /* IBSS code */
1531 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1532 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1533 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1534 const u8 *bssid, const u8 *addr, u32 supp_rates);
1535 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1536 struct cfg80211_ibss_params *params);
1537 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1538 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1539 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1540 struct sk_buff *skb);
1541 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1542 struct cfg80211_csa_settings *csa_settings);
1543 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1544 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1545
1546 /* OCB code */
1547 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1548 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1549 const u8 *bssid, const u8 *addr, u32 supp_rates);
1550 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1551 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1552 struct ocb_setup *setup);
1553 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1554
1555 /* mesh code */
1556 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1557 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1558 struct sk_buff *skb);
1559 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1560 struct cfg80211_csa_settings *csa_settings);
1561 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1562
1563 /* scan/BSS handling */
1564 void ieee80211_scan_work(struct work_struct *work);
1565 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1566 const u8 *ssid, u8 ssid_len,
1567 struct ieee80211_channel **channels,
1568 unsigned int n_channels,
1569 enum nl80211_bss_scan_width scan_width);
1570 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1571 struct cfg80211_scan_request *req);
1572 void ieee80211_scan_cancel(struct ieee80211_local *local);
1573 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1574 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1575
1576 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1577 struct ieee80211_bss *
1578 ieee80211_bss_info_update(struct ieee80211_local *local,
1579 struct ieee80211_rx_status *rx_status,
1580 struct ieee80211_mgmt *mgmt,
1581 size_t len,
1582 struct ieee802_11_elems *elems,
1583 struct ieee80211_channel *channel);
1584 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1585 struct ieee80211_bss *bss);
1586
1587 /* scheduled scan handling */
1588 int
1589 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1590 struct cfg80211_sched_scan_request *req);
1591 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1592 struct cfg80211_sched_scan_request *req);
1593 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1594 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1595 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1596
1597 /* off-channel/mgmt-tx */
1598 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1599 void ieee80211_offchannel_return(struct ieee80211_local *local);
1600 void ieee80211_roc_setup(struct ieee80211_local *local);
1601 void ieee80211_start_next_roc(struct ieee80211_local *local);
1602 void ieee80211_roc_purge(struct ieee80211_local *local,
1603 struct ieee80211_sub_if_data *sdata);
1604 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1605 struct ieee80211_channel *chan,
1606 unsigned int duration, u64 *cookie);
1607 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1608 struct wireless_dev *wdev, u64 cookie);
1609 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1610 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1611 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1612 struct wireless_dev *wdev, u64 cookie);
1613
1614 /* channel switch handling */
1615 void ieee80211_csa_finalize_work(struct work_struct *work);
1616 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1617 struct cfg80211_csa_settings *params);
1618
1619 /* interface handling */
1620 int ieee80211_iface_init(void);
1621 void ieee80211_iface_exit(void);
1622 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1623 unsigned char name_assign_type,
1624 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1625 struct vif_params *params);
1626 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1627 enum nl80211_iftype type);
1628 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1629 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1630 u32 ieee80211_idle_off(struct ieee80211_local *local);
1631 void ieee80211_recalc_idle(struct ieee80211_local *local);
1632 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1633 const int offset);
1634 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1635 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1636 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1637 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1638
1639 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1640 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1641 bool update_bss);
1642
1643 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1644 {
1645 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1646 }
1647
1648 /* tx handling */
1649 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1650 void ieee80211_tx_pending(unsigned long data);
1651 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1652 struct net_device *dev);
1653 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1654 struct net_device *dev);
1655 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1656 struct net_device *dev,
1657 u32 info_flags);
1658 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1659 struct sk_buff_head *skbs);
1660 struct sk_buff *
1661 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1662 struct sk_buff *skb, u32 info_flags);
1663 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1664 struct ieee80211_supported_band *sband,
1665 int retry_count, int shift, bool send_to_cooked);
1666
1667 void ieee80211_check_fast_xmit(struct sta_info *sta);
1668 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1669 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1670 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1671
1672 /* HT */
1673 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1674 struct ieee80211_sta_ht_cap *ht_cap);
1675 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1676 struct ieee80211_supported_band *sband,
1677 const struct ieee80211_ht_cap *ht_cap_ie,
1678 struct sta_info *sta);
1679 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1680 const u8 *da, u16 tid,
1681 u16 initiator, u16 reason_code);
1682 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1683 enum ieee80211_smps_mode smps, const u8 *da,
1684 const u8 *bssid);
1685 void ieee80211_request_smps_ap_work(struct work_struct *work);
1686 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1687 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1688 enum ieee80211_smps_mode smps_mode_new);
1689
1690 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1691 u16 initiator, u16 reason, bool stop);
1692 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1693 u16 initiator, u16 reason, bool stop);
1694 void __ieee80211_start_rx_ba_session(struct sta_info *sta,
1695 u8 dialog_token, u16 timeout,
1696 u16 start_seq_num, u16 ba_policy, u16 tid,
1697 u16 buf_size, bool tx, bool auto_seq);
1698 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1699 enum ieee80211_agg_stop_reason reason);
1700 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1701 struct sta_info *sta,
1702 struct ieee80211_mgmt *mgmt, size_t len);
1703 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1704 struct sta_info *sta,
1705 struct ieee80211_mgmt *mgmt,
1706 size_t len);
1707 void ieee80211_process_addba_request(struct ieee80211_local *local,
1708 struct sta_info *sta,
1709 struct ieee80211_mgmt *mgmt,
1710 size_t len);
1711
1712 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1713 enum ieee80211_agg_stop_reason reason);
1714 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1715 enum ieee80211_agg_stop_reason reason);
1716 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1717 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1718 void ieee80211_ba_session_work(struct work_struct *work);
1719 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1720 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1721
1722 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1723
1724 /* VHT */
1725 void
1726 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1727 struct ieee80211_supported_band *sband,
1728 const struct ieee80211_vht_cap *vht_cap_ie,
1729 struct sta_info *sta);
1730 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1731 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1732 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1733 enum ieee80211_sta_rx_bandwidth
1734 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
1735 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
1736 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1737 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
1738 struct ieee80211_mgmt *mgmt);
1739 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1740 struct sta_info *sta, u8 opmode,
1741 enum nl80211_band band);
1742 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1743 struct sta_info *sta, u8 opmode,
1744 enum nl80211_band band);
1745 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1746 struct ieee80211_sta_vht_cap *vht_cap);
1747 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
1748 u16 vht_mask[NL80211_VHT_NSS_MAX]);
1749
1750 /* Spectrum management */
1751 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1752 struct ieee80211_mgmt *mgmt,
1753 size_t len);
1754 /**
1755 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1756 * @sdata: the sdata of the interface which has received the frame
1757 * @elems: parsed 802.11 elements received with the frame
1758 * @current_band: indicates the current band
1759 * @sta_flags: contains information about own capabilities and restrictions
1760 * to decide which channel switch announcements can be accepted. Only the
1761 * following subset of &enum ieee80211_sta_flags are evaluated:
1762 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1763 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1764 * %IEEE80211_STA_DISABLE_160MHZ.
1765 * @bssid: the currently connected bssid (for reporting)
1766 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1767 All of them will be filled with if success only.
1768 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1769 */
1770 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1771 struct ieee802_11_elems *elems,
1772 enum nl80211_band current_band,
1773 u32 sta_flags, u8 *bssid,
1774 struct ieee80211_csa_ie *csa_ie);
1775
1776 /* Suspend/resume and hw reconfiguration */
1777 int ieee80211_reconfig(struct ieee80211_local *local);
1778 void ieee80211_stop_device(struct ieee80211_local *local);
1779
1780 int __ieee80211_suspend(struct ieee80211_hw *hw,
1781 struct cfg80211_wowlan *wowlan);
1782
1783 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1784 {
1785 struct ieee80211_local *local = hw_to_local(hw);
1786
1787 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
1788 !test_bit(SCAN_COMPLETED, &local->scanning),
1789 "%s: resume with hardware scan still in progress\n",
1790 wiphy_name(hw->wiphy));
1791
1792 return ieee80211_reconfig(hw_to_local(hw));
1793 }
1794
1795 /* utility functions/constants */
1796 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1797 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
1798 int rate, int erp, int short_preamble,
1799 int shift);
1800 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1801 bool bss_notify, bool enable_qos);
1802 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
1803 struct sta_info *sta, struct sk_buff *skb);
1804
1805 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1806 struct sk_buff *skb, int tid,
1807 enum nl80211_band band);
1808
1809 static inline void
1810 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1811 struct sk_buff *skb, int tid,
1812 enum nl80211_band band)
1813 {
1814 rcu_read_lock();
1815 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1816 rcu_read_unlock();
1817 }
1818
1819 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1820 struct sk_buff *skb, int tid)
1821 {
1822 struct ieee80211_chanctx_conf *chanctx_conf;
1823
1824 rcu_read_lock();
1825 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1826 if (WARN_ON(!chanctx_conf)) {
1827 rcu_read_unlock();
1828 kfree_skb(skb);
1829 return;
1830 }
1831
1832 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1833 chanctx_conf->def.chan->band);
1834 rcu_read_unlock();
1835 }
1836
1837 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1838 struct sk_buff *skb)
1839 {
1840 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1841 ieee80211_tx_skb_tid(sdata, skb, 7);
1842 }
1843
1844 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1845 struct ieee802_11_elems *elems,
1846 u64 filter, u32 crc);
1847 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1848 bool action,
1849 struct ieee802_11_elems *elems)
1850 {
1851 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1852 }
1853
1854
1855 extern const int ieee802_1d_to_ac[8];
1856
1857 static inline int ieee80211_ac_from_tid(int tid)
1858 {
1859 return ieee802_1d_to_ac[tid & 7];
1860 }
1861
1862 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1863 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1864 void ieee80211_dynamic_ps_timer(unsigned long data);
1865 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1866 struct ieee80211_sub_if_data *sdata,
1867 bool powersave);
1868 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1869 struct ieee80211_hdr *hdr);
1870 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1871 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
1872
1873 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1874 unsigned long queues,
1875 enum queue_stop_reason reason,
1876 bool refcounted);
1877 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1878 struct ieee80211_sub_if_data *sdata,
1879 enum queue_stop_reason reason);
1880 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1881 struct ieee80211_sub_if_data *sdata,
1882 enum queue_stop_reason reason);
1883 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1884 unsigned long queues,
1885 enum queue_stop_reason reason,
1886 bool refcounted);
1887 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1888 enum queue_stop_reason reason,
1889 bool refcounted);
1890 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1891 enum queue_stop_reason reason,
1892 bool refcounted);
1893 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1894 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1895 struct sk_buff *skb);
1896 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1897 struct sk_buff_head *skbs);
1898 void ieee80211_flush_queues(struct ieee80211_local *local,
1899 struct ieee80211_sub_if_data *sdata, bool drop);
1900 void __ieee80211_flush_queues(struct ieee80211_local *local,
1901 struct ieee80211_sub_if_data *sdata,
1902 unsigned int queues, bool drop);
1903
1904 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
1905 {
1906 /*
1907 * If quiescing is set, we are racing with __ieee80211_suspend.
1908 * __ieee80211_suspend flushes the workers after setting quiescing,
1909 * and we check quiescing / suspended before enqueing new workers.
1910 * We should abort the worker to avoid the races below.
1911 */
1912 if (local->quiescing)
1913 return false;
1914
1915 /*
1916 * We might already be suspended if the following scenario occurs:
1917 * __ieee80211_suspend Control path
1918 *
1919 * if (local->quiescing)
1920 * return;
1921 * local->quiescing = true;
1922 * flush_workqueue();
1923 * queue_work(...);
1924 * local->suspended = true;
1925 * local->quiescing = false;
1926 * worker starts running...
1927 */
1928 if (local->suspended)
1929 return false;
1930
1931 return true;
1932 }
1933
1934 void ieee80211_init_tx_queue(struct ieee80211_sub_if_data *sdata,
1935 struct sta_info *sta,
1936 struct txq_info *txq, int tid);
1937 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1938 u16 transaction, u16 auth_alg, u16 status,
1939 const u8 *extra, size_t extra_len, const u8 *bssid,
1940 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1941 u32 tx_flags);
1942 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1943 const u8 *bssid, u16 stype, u16 reason,
1944 bool send_frame, u8 *frame_buf);
1945 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1946 size_t buffer_len,
1947 struct ieee80211_scan_ies *ie_desc,
1948 const u8 *ie, size_t ie_len,
1949 u8 bands_used, u32 *rate_masks,
1950 struct cfg80211_chan_def *chandef);
1951 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1952 const u8 *src, const u8 *dst,
1953 u32 ratemask,
1954 struct ieee80211_channel *chan,
1955 const u8 *ssid, size_t ssid_len,
1956 const u8 *ie, size_t ie_len,
1957 bool directed);
1958 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
1959 const u8 *src, const u8 *dst,
1960 const u8 *ssid, size_t ssid_len,
1961 const u8 *ie, size_t ie_len,
1962 u32 ratemask, bool directed, u32 tx_flags,
1963 struct ieee80211_channel *channel, bool scan);
1964
1965 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1966 struct ieee802_11_elems *elems,
1967 enum nl80211_band band, u32 *basic_rates);
1968 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1969 enum ieee80211_smps_mode smps_mode);
1970 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1971 enum ieee80211_smps_mode smps_mode);
1972 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1973 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
1974
1975 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1976 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1977 u16 cap);
1978 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1979 const struct cfg80211_chan_def *chandef,
1980 u16 prot_mode, bool rifs_mode);
1981 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1982 u32 cap);
1983 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1984 const struct cfg80211_chan_def *chandef);
1985 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1986 const struct ieee80211_supported_band *sband,
1987 const u8 *srates, int srates_len, u32 *rates);
1988 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1989 struct sk_buff *skb, bool need_basic,
1990 enum nl80211_band band);
1991 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1992 struct sk_buff *skb, bool need_basic,
1993 enum nl80211_band band);
1994 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
1995
1996 /* channel management */
1997 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
1998 struct cfg80211_chan_def *chandef);
1999 bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper,
2000 struct cfg80211_chan_def *chandef);
2001 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2002
2003 int __must_check
2004 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
2005 const struct cfg80211_chan_def *chandef,
2006 enum ieee80211_chanctx_mode mode);
2007 int __must_check
2008 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
2009 const struct cfg80211_chan_def *chandef,
2010 enum ieee80211_chanctx_mode mode,
2011 bool radar_required);
2012 int __must_check
2013 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2014 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2015
2016 int __must_check
2017 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2018 const struct cfg80211_chan_def *chandef,
2019 u32 *changed);
2020 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2021 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2022 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2023 bool clear);
2024 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2025 struct ieee80211_chanctx *ctx);
2026
2027 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2028 struct ieee80211_chanctx *chanctx);
2029 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2030 struct ieee80211_chanctx *ctx);
2031 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2032
2033 void ieee80211_dfs_cac_timer(unsigned long data);
2034 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2035 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2036 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2037 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2038 struct cfg80211_csa_settings *csa_settings);
2039
2040 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2041 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2042 const struct ieee80211_cipher_scheme *
2043 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2044 enum nl80211_iftype iftype);
2045 int ieee80211_cs_headroom(struct ieee80211_local *local,
2046 struct cfg80211_crypto_settings *crypto,
2047 enum nl80211_iftype iftype);
2048 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2049 struct ieee80211_sub_if_data *sdata);
2050 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2051 const struct cfg80211_chan_def *chandef,
2052 enum ieee80211_chanctx_mode chanmode,
2053 u8 radar_detect);
2054 int ieee80211_max_num_channels(struct ieee80211_local *local);
2055 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta);
2056 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2057 struct ieee80211_chanctx *ctx);
2058
2059 /* TDLS */
2060 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2061 const u8 *peer, u8 action_code, u8 dialog_token,
2062 u16 status_code, u32 peer_capability,
2063 bool initiator, const u8 *extra_ies,
2064 size_t extra_ies_len);
2065 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2066 const u8 *peer, enum nl80211_tdls_operation oper);
2067 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2068 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2069 const u8 *addr, u8 oper_class,
2070 struct cfg80211_chan_def *chandef);
2071 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2072 struct net_device *dev,
2073 const u8 *addr);
2074 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2075 void ieee80211_tdls_chsw_work(struct work_struct *wk);
2076
2077 extern const struct ethtool_ops ieee80211_ethtool_ops;
2078
2079 #ifdef CONFIG_MAC80211_NOINLINE
2080 #define debug_noinline noinline
2081 #else
2082 #define debug_noinline
2083 #endif
2084
2085 #endif /* IEEE80211_I_H */
Linux with added FPC-III support