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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 recieved 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_if_managed {
403 struct timer_list timer;
404 struct timer_list conn_mon_timer;
405 struct timer_list bcn_mon_timer;
406 struct timer_list chswitch_timer;
407 struct work_struct monitor_work;
408 struct work_struct chswitch_work;
409 struct work_struct beacon_connection_loss_work;
410 struct work_struct csa_connection_drop_work;
411
412 unsigned long beacon_timeout;
413 unsigned long probe_timeout;
414 int probe_send_count;
415 bool nullfunc_failed;
416 bool connection_loss;
417
418 struct cfg80211_bss *associated;
419 struct ieee80211_mgd_auth_data *auth_data;
420 struct ieee80211_mgd_assoc_data *assoc_data;
421
422 u8 bssid[ETH_ALEN];
423
424 u16 aid;
425
426 bool powersave; /* powersave requested for this iface */
427 bool broken_ap; /* AP is broken -- turn off powersave */
428 bool have_beacon;
429 u8 dtim_period;
430 enum ieee80211_smps_mode req_smps, /* requested smps mode */
431 driver_smps_mode; /* smps mode request */
432
433 struct work_struct request_smps_work;
434
435 unsigned int flags;
436
437 bool beacon_crc_valid;
438 u32 beacon_crc;
439
440 bool status_acked;
441 bool status_received;
442 __le16 status_fc;
443
444 enum {
445 IEEE80211_MFP_DISABLED,
446 IEEE80211_MFP_OPTIONAL,
447 IEEE80211_MFP_REQUIRED
448 } mfp; /* management frame protection */
449
450 /*
451 * Bitmask of enabled u-apsd queues,
452 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
453 * to take effect.
454 */
455 unsigned int uapsd_queues;
456
457 /*
458 * Maximum number of buffered frames AP can deliver during a
459 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
460 * Needs a new association to take effect.
461 */
462 unsigned int uapsd_max_sp_len;
463
464 int wmm_last_param_set;
465
466 u8 use_4addr;
467
468 s16 p2p_noa_index;
469
470 /* Signal strength from the last Beacon frame in the current BSS. */
471 int last_beacon_signal;
472
473 /*
474 * Weighted average of the signal strength from Beacon frames in the
475 * current BSS. This is in units of 1/16 of the signal unit to maintain
476 * accuracy and to speed up calculations, i.e., the value need to be
477 * divided by 16 to get the actual value.
478 */
479 int ave_beacon_signal;
480
481 /*
482 * Number of Beacon frames used in ave_beacon_signal. This can be used
483 * to avoid generating less reliable cqm events that would be based
484 * only on couple of received frames.
485 */
486 unsigned int count_beacon_signal;
487
488 /*
489 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
490 * that triggered a cqm event. 0 indicates that no event has been
491 * generated for the current association.
492 */
493 int last_cqm_event_signal;
494
495 /*
496 * State variables for keeping track of RSSI of the AP currently
497 * connected to and informing driver when RSSI has gone
498 * below/above a certain threshold.
499 */
500 int rssi_min_thold, rssi_max_thold;
501 int last_ave_beacon_signal;
502
503 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
504 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
505 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
506 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
507
508 u8 tdls_peer[ETH_ALEN] __aligned(2);
509 struct delayed_work tdls_peer_del_work;
510 };
511
512 struct ieee80211_if_ibss {
513 struct timer_list timer;
514 struct work_struct csa_connection_drop_work;
515
516 unsigned long last_scan_completed;
517
518 u32 basic_rates;
519
520 bool fixed_bssid;
521 bool fixed_channel;
522 bool privacy;
523
524 bool control_port;
525 bool userspace_handles_dfs;
526
527 u8 bssid[ETH_ALEN] __aligned(2);
528 u8 ssid[IEEE80211_MAX_SSID_LEN];
529 u8 ssid_len, ie_len;
530 u8 *ie;
531 struct cfg80211_chan_def chandef;
532
533 unsigned long ibss_join_req;
534 /* probe response/beacon for IBSS */
535 struct beacon_data __rcu *presp;
536
537 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
538 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
539
540 spinlock_t incomplete_lock;
541 struct list_head incomplete_stations;
542
543 enum {
544 IEEE80211_IBSS_MLME_SEARCH,
545 IEEE80211_IBSS_MLME_JOINED,
546 } state;
547 };
548
549 /**
550 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
551 *
552 * these declarations define the interface, which enables
553 * vendor-specific mesh synchronization
554 *
555 */
556 struct ieee802_11_elems;
557 struct ieee80211_mesh_sync_ops {
558 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
559 u16 stype,
560 struct ieee80211_mgmt *mgmt,
561 struct ieee802_11_elems *elems,
562 struct ieee80211_rx_status *rx_status);
563
564 /* should be called with beacon_data under RCU read lock */
565 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata,
566 struct beacon_data *beacon);
567 /* add other framework functions here */
568 };
569
570 struct mesh_csa_settings {
571 struct rcu_head rcu_head;
572 struct cfg80211_csa_settings settings;
573 };
574
575 struct ieee80211_if_mesh {
576 struct timer_list housekeeping_timer;
577 struct timer_list mesh_path_timer;
578 struct timer_list mesh_path_root_timer;
579
580 unsigned long wrkq_flags;
581 unsigned long mbss_changed;
582
583 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
584 size_t mesh_id_len;
585 /* Active Path Selection Protocol Identifier */
586 u8 mesh_pp_id;
587 /* Active Path Selection Metric Identifier */
588 u8 mesh_pm_id;
589 /* Congestion Control Mode Identifier */
590 u8 mesh_cc_id;
591 /* Synchronization Protocol Identifier */
592 u8 mesh_sp_id;
593 /* Authentication Protocol Identifier */
594 u8 mesh_auth_id;
595 /* Local mesh Sequence Number */
596 u32 sn;
597 /* Last used PREQ ID */
598 u32 preq_id;
599 atomic_t mpaths;
600 /* Timestamp of last SN update */
601 unsigned long last_sn_update;
602 /* Time when it's ok to send next PERR */
603 unsigned long next_perr;
604 /* Timestamp of last PREQ sent */
605 unsigned long last_preq;
606 struct mesh_rmc *rmc;
607 spinlock_t mesh_preq_queue_lock;
608 struct mesh_preq_queue preq_queue;
609 int preq_queue_len;
610 struct mesh_stats mshstats;
611 struct mesh_config mshcfg;
612 atomic_t estab_plinks;
613 u32 mesh_seqnum;
614 bool accepting_plinks;
615 int num_gates;
616 struct beacon_data __rcu *beacon;
617 const u8 *ie;
618 u8 ie_len;
619 enum {
620 IEEE80211_MESH_SEC_NONE = 0x0,
621 IEEE80211_MESH_SEC_AUTHED = 0x1,
622 IEEE80211_MESH_SEC_SECURED = 0x2,
623 } security;
624 bool user_mpm;
625 /* Extensible Synchronization Framework */
626 const struct ieee80211_mesh_sync_ops *sync_ops;
627 s64 sync_offset_clockdrift_max;
628 spinlock_t sync_offset_lock;
629 bool adjusting_tbtt;
630 /* mesh power save */
631 enum nl80211_mesh_power_mode nonpeer_pm;
632 int ps_peers_light_sleep;
633 int ps_peers_deep_sleep;
634 struct ps_data ps;
635 /* Channel Switching Support */
636 struct mesh_csa_settings __rcu *csa;
637 enum {
638 IEEE80211_MESH_CSA_ROLE_NONE,
639 IEEE80211_MESH_CSA_ROLE_INIT,
640 IEEE80211_MESH_CSA_ROLE_REPEATER,
641 } csa_role;
642 u8 chsw_ttl;
643 u16 pre_value;
644
645 /* offset from skb->data while building IE */
646 int meshconf_offset;
647 };
648
649 #ifdef CONFIG_MAC80211_MESH
650 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
651 do { (msh)->mshstats.name++; } while (0)
652 #else
653 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
654 do { } while (0)
655 #endif
656
657 /**
658 * enum ieee80211_sub_if_data_flags - virtual interface flags
659 *
660 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
661 * @IEEE80211_SDATA_PROMISC: interface is promisc
662 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
663 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
664 * associated stations and deliver multicast frames both
665 * back to wireless media and to the local net stack.
666 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
667 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
668 */
669 enum ieee80211_sub_if_data_flags {
670 IEEE80211_SDATA_ALLMULTI = BIT(0),
671 IEEE80211_SDATA_PROMISC = BIT(1),
672 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
673 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
674 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
675 IEEE80211_SDATA_IN_DRIVER = BIT(5),
676 };
677
678 /**
679 * enum ieee80211_sdata_state_bits - virtual interface state bits
680 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
681 * mirrors netif_running() but is separate for interface type
682 * change handling while the interface is up
683 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
684 * mode, so queues are stopped
685 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
686 * to offchannel, reset when offchannel returns
687 */
688 enum ieee80211_sdata_state_bits {
689 SDATA_STATE_RUNNING,
690 SDATA_STATE_OFFCHANNEL,
691 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
692 };
693
694 /**
695 * enum ieee80211_chanctx_mode - channel context configuration mode
696 *
697 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
698 * multiple interfaces
699 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
700 * only by a single interface. This can be used for example for
701 * non-fixed channel IBSS.
702 */
703 enum ieee80211_chanctx_mode {
704 IEEE80211_CHANCTX_SHARED,
705 IEEE80211_CHANCTX_EXCLUSIVE
706 };
707
708 /**
709 * enum ieee80211_chanctx_replace_state - channel context replacement state
710 *
711 * This is used for channel context in-place reservations that require channel
712 * context switch/swap.
713 *
714 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
715 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
716 * by a (not yet registered) channel context pointed by %replace_ctx.
717 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
718 * replaces an existing channel context pointed to by %replace_ctx.
719 */
720 enum ieee80211_chanctx_replace_state {
721 IEEE80211_CHANCTX_REPLACE_NONE,
722 IEEE80211_CHANCTX_WILL_BE_REPLACED,
723 IEEE80211_CHANCTX_REPLACES_OTHER,
724 };
725
726 struct ieee80211_chanctx {
727 struct list_head list;
728 struct rcu_head rcu_head;
729
730 struct list_head assigned_vifs;
731 struct list_head reserved_vifs;
732
733 enum ieee80211_chanctx_replace_state replace_state;
734 struct ieee80211_chanctx *replace_ctx;
735
736 enum ieee80211_chanctx_mode mode;
737 bool driver_present;
738
739 struct ieee80211_chanctx_conf conf;
740 };
741
742 struct mac80211_qos_map {
743 struct cfg80211_qos_map qos_map;
744 struct rcu_head rcu_head;
745 };
746
747 struct ieee80211_sub_if_data {
748 struct list_head list;
749
750 struct wireless_dev wdev;
751
752 /* keys */
753 struct list_head key_list;
754
755 /* count for keys needing tailroom space allocation */
756 int crypto_tx_tailroom_needed_cnt;
757 int crypto_tx_tailroom_pending_dec;
758 struct delayed_work dec_tailroom_needed_wk;
759
760 struct net_device *dev;
761 struct ieee80211_local *local;
762
763 unsigned int flags;
764
765 unsigned long state;
766
767 int drop_unencrypted;
768
769 char name[IFNAMSIZ];
770
771 /* Fragment table for host-based reassembly */
772 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
773 unsigned int fragment_next;
774
775 /* TID bitmap for NoAck policy */
776 u16 noack_map;
777
778 /* bit field of ACM bits (BIT(802.1D tag)) */
779 u8 wmm_acm;
780
781 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
782 struct ieee80211_key __rcu *default_unicast_key;
783 struct ieee80211_key __rcu *default_multicast_key;
784 struct ieee80211_key __rcu *default_mgmt_key;
785
786 u16 sequence_number;
787 __be16 control_port_protocol;
788 bool control_port_no_encrypt;
789 int encrypt_headroom;
790
791 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
792 struct mac80211_qos_map __rcu *qos_map;
793
794 struct work_struct csa_finalize_work;
795 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
796 struct cfg80211_chan_def csa_chandef;
797
798 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
799 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
800
801 /* context reservation -- protected with chanctx_mtx */
802 struct ieee80211_chanctx *reserved_chanctx;
803 struct cfg80211_chan_def reserved_chandef;
804 bool reserved_radar_required;
805 bool reserved_ready;
806
807 /* used to reconfigure hardware SM PS */
808 struct work_struct recalc_smps;
809
810 struct work_struct work;
811 struct sk_buff_head skb_queue;
812
813 u8 needed_rx_chains;
814 enum ieee80211_smps_mode smps_mode;
815
816 int user_power_level; /* in dBm */
817 int ap_power_level; /* in dBm */
818
819 bool radar_required;
820 struct delayed_work dfs_cac_timer_work;
821
822 /*
823 * AP this belongs to: self in AP mode and
824 * corresponding AP in VLAN mode, NULL for
825 * all others (might be needed later in IBSS)
826 */
827 struct ieee80211_if_ap *bss;
828
829 /* bitmap of allowed (non-MCS) rate indexes for rate control */
830 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
831
832 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
833 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
834
835 union {
836 struct ieee80211_if_ap ap;
837 struct ieee80211_if_wds wds;
838 struct ieee80211_if_vlan vlan;
839 struct ieee80211_if_managed mgd;
840 struct ieee80211_if_ibss ibss;
841 struct ieee80211_if_mesh mesh;
842 u32 mntr_flags;
843 } u;
844
845 #ifdef CONFIG_MAC80211_DEBUGFS
846 struct {
847 struct dentry *subdir_stations;
848 struct dentry *default_unicast_key;
849 struct dentry *default_multicast_key;
850 struct dentry *default_mgmt_key;
851 } debugfs;
852 #endif
853
854 /* must be last, dynamically sized area in this! */
855 struct ieee80211_vif vif;
856 };
857
858 static inline
859 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
860 {
861 return container_of(p, struct ieee80211_sub_if_data, vif);
862 }
863
864 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
865 __acquires(&sdata->wdev.mtx)
866 {
867 mutex_lock(&sdata->wdev.mtx);
868 __acquire(&sdata->wdev.mtx);
869 }
870
871 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
872 __releases(&sdata->wdev.mtx)
873 {
874 mutex_unlock(&sdata->wdev.mtx);
875 __release(&sdata->wdev.mtx);
876 }
877
878 #define sdata_dereference(p, sdata) \
879 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
880
881 static inline void
882 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
883 {
884 lockdep_assert_held(&sdata->wdev.mtx);
885 }
886
887 static inline enum ieee80211_band
888 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
889 {
890 enum ieee80211_band band = IEEE80211_BAND_2GHZ;
891 struct ieee80211_chanctx_conf *chanctx_conf;
892
893 rcu_read_lock();
894 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
895 if (!WARN_ON(!chanctx_conf))
896 band = chanctx_conf->def.chan->band;
897 rcu_read_unlock();
898
899 return band;
900 }
901
902 static inline int
903 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
904 {
905 switch (chandef->width) {
906 case NL80211_CHAN_WIDTH_5:
907 return 2;
908 case NL80211_CHAN_WIDTH_10:
909 return 1;
910 default:
911 return 0;
912 }
913 }
914
915 static inline int
916 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
917 {
918 struct ieee80211_chanctx_conf *chanctx_conf;
919 int shift = 0;
920
921 rcu_read_lock();
922 chanctx_conf = rcu_dereference(vif->chanctx_conf);
923 if (chanctx_conf)
924 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
925 rcu_read_unlock();
926
927 return shift;
928 }
929
930 struct ieee80211_rx_agg {
931 u8 addr[ETH_ALEN];
932 u16 tid;
933 };
934
935 enum sdata_queue_type {
936 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
937 IEEE80211_SDATA_QUEUE_AGG_START = 1,
938 IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
939 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3,
940 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4,
941 };
942
943 enum {
944 IEEE80211_RX_MSG = 1,
945 IEEE80211_TX_STATUS_MSG = 2,
946 };
947
948 enum queue_stop_reason {
949 IEEE80211_QUEUE_STOP_REASON_DRIVER,
950 IEEE80211_QUEUE_STOP_REASON_PS,
951 IEEE80211_QUEUE_STOP_REASON_CSA,
952 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
953 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
954 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
955 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
956 IEEE80211_QUEUE_STOP_REASON_FLUSH,
957 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
958
959 IEEE80211_QUEUE_STOP_REASONS,
960 };
961
962 #ifdef CONFIG_MAC80211_LEDS
963 struct tpt_led_trigger {
964 struct led_trigger trig;
965 char name[32];
966 const struct ieee80211_tpt_blink *blink_table;
967 unsigned int blink_table_len;
968 struct timer_list timer;
969 unsigned long prev_traffic;
970 unsigned long tx_bytes, rx_bytes;
971 unsigned int active, want;
972 bool running;
973 };
974 #endif
975
976 /*
977 * struct ieee80211_tx_latency_bin_ranges - Tx latency statistics bins ranges
978 *
979 * Measuring Tx latency statistics. Counts how many Tx frames transmitted in a
980 * certain latency range (in Milliseconds). Each station that uses these
981 * ranges will have bins to count the amount of frames received in that range.
982 * The user can configure the ranges via debugfs.
983 * If ranges is NULL then Tx latency statistics bins are disabled for all
984 * stations.
985 *
986 * @n_ranges: number of ranges that are taken in account
987 * @ranges: the ranges that the user requested or NULL if disabled.
988 */
989 struct ieee80211_tx_latency_bin_ranges {
990 int n_ranges;
991 u32 ranges[];
992 };
993
994 /**
995 * mac80211 scan flags - currently active scan mode
996 *
997 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
998 * well be on the operating channel
999 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1000 * determine if we are on the operating channel or not
1001 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1002 * channel. This should not interrupt normal traffic.
1003 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1004 * that the scan completed.
1005 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1006 * a scan complete for an aborted scan.
1007 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1008 * cancelled.
1009 */
1010 enum {
1011 SCAN_SW_SCANNING,
1012 SCAN_HW_SCANNING,
1013 SCAN_ONCHANNEL_SCANNING,
1014 SCAN_COMPLETED,
1015 SCAN_ABORTED,
1016 SCAN_HW_CANCELLED,
1017 };
1018
1019 /**
1020 * enum mac80211_scan_state - scan state machine states
1021 *
1022 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1023 * determines if we should keep on scanning or switch back to the
1024 * operating channel
1025 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1026 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1027 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1028 * send out data
1029 * @SCAN_RESUME: Resume the scan and scan the next channel
1030 * @SCAN_ABORT: Abort the scan and go back to operating channel
1031 */
1032 enum mac80211_scan_state {
1033 SCAN_DECISION,
1034 SCAN_SET_CHANNEL,
1035 SCAN_SEND_PROBE,
1036 SCAN_SUSPEND,
1037 SCAN_RESUME,
1038 SCAN_ABORT,
1039 };
1040
1041 struct ieee80211_local {
1042 /* embed the driver visible part.
1043 * don't cast (use the static inlines below), but we keep
1044 * it first anyway so they become a no-op */
1045 struct ieee80211_hw hw;
1046
1047 const struct ieee80211_ops *ops;
1048
1049 /*
1050 * private workqueue to mac80211. mac80211 makes this accessible
1051 * via ieee80211_queue_work()
1052 */
1053 struct workqueue_struct *workqueue;
1054
1055 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1056 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1057 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1058 spinlock_t queue_stop_reason_lock;
1059
1060 int open_count;
1061 int monitors, cooked_mntrs;
1062 /* number of interfaces with corresponding FIF_ flags */
1063 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1064 fif_probe_req;
1065 int probe_req_reg;
1066 unsigned int filter_flags; /* FIF_* */
1067
1068 bool wiphy_ciphers_allocated;
1069
1070 bool use_chanctx;
1071
1072 /* protects the aggregated multicast list and filter calls */
1073 spinlock_t filter_lock;
1074
1075 /* used for uploading changed mc list */
1076 struct work_struct reconfig_filter;
1077
1078 /* aggregated multicast list */
1079 struct netdev_hw_addr_list mc_list;
1080
1081 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1082
1083 /*
1084 * suspended is true if we finished all the suspend _and_ we have
1085 * not yet come up from resume. This is to be used by mac80211
1086 * to ensure driver sanity during suspend and mac80211's own
1087 * sanity. It can eventually be used for WoW as well.
1088 */
1089 bool suspended;
1090
1091 /*
1092 * Resuming is true while suspended, but when we're reprogramming the
1093 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1094 * again even though some other parts of the stack are still suspended
1095 * and we still drop received frames to avoid waking the stack.
1096 */
1097 bool resuming;
1098
1099 /*
1100 * quiescing is true during the suspend process _only_ to
1101 * ease timer cancelling etc.
1102 */
1103 bool quiescing;
1104
1105 /* device is started */
1106 bool started;
1107
1108 /* device is during a HW reconfig */
1109 bool in_reconfig;
1110
1111 /* wowlan is enabled -- don't reconfig on resume */
1112 bool wowlan;
1113
1114 /* DFS/radar detection is enabled */
1115 bool radar_detect_enabled;
1116 struct work_struct radar_detected_work;
1117
1118 /* number of RX chains the hardware has */
1119 u8 rx_chains;
1120
1121 int tx_headroom; /* required headroom for hardware/radiotap */
1122
1123 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1124 * added to skb_queue will be processed, but frames in
1125 * skb_queue_unreliable may be dropped if the total length of these
1126 * queues increases over the limit. */
1127 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1128 struct tasklet_struct tasklet;
1129 struct sk_buff_head skb_queue;
1130 struct sk_buff_head skb_queue_unreliable;
1131
1132 spinlock_t rx_path_lock;
1133
1134 /* Station data */
1135 /*
1136 * The mutex only protects the list, hash table and
1137 * counter, reads are done with RCU.
1138 */
1139 struct mutex sta_mtx;
1140 spinlock_t tim_lock;
1141 unsigned long num_sta;
1142 struct list_head sta_list;
1143 struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
1144 struct timer_list sta_cleanup;
1145 int sta_generation;
1146
1147 /*
1148 * Tx latency statistics parameters for all stations.
1149 * Can enable via debugfs (NULL when disabled).
1150 */
1151 struct ieee80211_tx_latency_bin_ranges __rcu *tx_latency;
1152
1153 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1154 struct tasklet_struct tx_pending_tasklet;
1155
1156 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1157
1158 /* number of interfaces with corresponding IFF_ flags */
1159 atomic_t iff_allmultis, iff_promiscs;
1160
1161 struct rate_control_ref *rate_ctrl;
1162
1163 struct crypto_cipher *wep_tx_tfm;
1164 struct crypto_cipher *wep_rx_tfm;
1165 u32 wep_iv;
1166
1167 /* see iface.c */
1168 struct list_head interfaces;
1169 struct mutex iflist_mtx;
1170
1171 /*
1172 * Key mutex, protects sdata's key_list and sta_info's
1173 * key pointers (write access, they're RCU.)
1174 */
1175 struct mutex key_mtx;
1176
1177 /* mutex for scan and work locking */
1178 struct mutex mtx;
1179
1180 /* Scanning and BSS list */
1181 unsigned long scanning;
1182 struct cfg80211_ssid scan_ssid;
1183 struct cfg80211_scan_request *int_scan_req;
1184 struct cfg80211_scan_request *scan_req;
1185 struct ieee80211_scan_request *hw_scan_req;
1186 struct cfg80211_chan_def scan_chandef;
1187 enum ieee80211_band hw_scan_band;
1188 int scan_channel_idx;
1189 int scan_ies_len;
1190 int hw_scan_ies_bufsize;
1191
1192 struct work_struct sched_scan_stopped_work;
1193 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1194 struct cfg80211_sched_scan_request *sched_scan_req;
1195
1196 unsigned long leave_oper_channel_time;
1197 enum mac80211_scan_state next_scan_state;
1198 struct delayed_work scan_work;
1199 struct ieee80211_sub_if_data __rcu *scan_sdata;
1200 /* For backward compatibility only -- do not use */
1201 struct cfg80211_chan_def _oper_chandef;
1202
1203 /* Temporary remain-on-channel for off-channel operations */
1204 struct ieee80211_channel *tmp_channel;
1205
1206 /* channel contexts */
1207 struct list_head chanctx_list;
1208 struct mutex chanctx_mtx;
1209
1210 /* SNMP counters */
1211 /* dot11CountersTable */
1212 u32 dot11TransmittedFragmentCount;
1213 u32 dot11MulticastTransmittedFrameCount;
1214 u32 dot11FailedCount;
1215 u32 dot11RetryCount;
1216 u32 dot11MultipleRetryCount;
1217 u32 dot11FrameDuplicateCount;
1218 u32 dot11ReceivedFragmentCount;
1219 u32 dot11MulticastReceivedFrameCount;
1220 u32 dot11TransmittedFrameCount;
1221
1222 #ifdef CONFIG_MAC80211_LEDS
1223 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1224 struct tpt_led_trigger *tpt_led_trigger;
1225 char tx_led_name[32], rx_led_name[32],
1226 assoc_led_name[32], radio_led_name[32];
1227 #endif
1228
1229 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1230 /* TX/RX handler statistics */
1231 unsigned int tx_handlers_drop;
1232 unsigned int tx_handlers_queued;
1233 unsigned int tx_handlers_drop_unencrypted;
1234 unsigned int tx_handlers_drop_fragment;
1235 unsigned int tx_handlers_drop_wep;
1236 unsigned int tx_handlers_drop_not_assoc;
1237 unsigned int tx_handlers_drop_unauth_port;
1238 unsigned int rx_handlers_drop;
1239 unsigned int rx_handlers_queued;
1240 unsigned int rx_handlers_drop_nullfunc;
1241 unsigned int rx_handlers_drop_defrag;
1242 unsigned int rx_handlers_drop_short;
1243 unsigned int tx_expand_skb_head;
1244 unsigned int tx_expand_skb_head_cloned;
1245 unsigned int rx_expand_skb_head;
1246 unsigned int rx_expand_skb_head2;
1247 unsigned int rx_handlers_fragments;
1248 unsigned int tx_status_drop;
1249 #define I802_DEBUG_INC(c) (c)++
1250 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1251 #define I802_DEBUG_INC(c) do { } while (0)
1252 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1253
1254
1255 int total_ps_buffered; /* total number of all buffered unicast and
1256 * multicast packets for power saving stations
1257 */
1258
1259 bool pspolling;
1260 bool offchannel_ps_enabled;
1261 /*
1262 * PS can only be enabled when we have exactly one managed
1263 * interface (and monitors) in PS, this then points there.
1264 */
1265 struct ieee80211_sub_if_data *ps_sdata;
1266 struct work_struct dynamic_ps_enable_work;
1267 struct work_struct dynamic_ps_disable_work;
1268 struct timer_list dynamic_ps_timer;
1269 struct notifier_block network_latency_notifier;
1270 struct notifier_block ifa_notifier;
1271 struct notifier_block ifa6_notifier;
1272
1273 /*
1274 * The dynamic ps timeout configured from user space via WEXT -
1275 * this will override whatever chosen by mac80211 internally.
1276 */
1277 int dynamic_ps_forced_timeout;
1278
1279 int user_power_level; /* in dBm, for all interfaces */
1280
1281 enum ieee80211_smps_mode smps_mode;
1282
1283 struct work_struct restart_work;
1284
1285 #ifdef CONFIG_MAC80211_DEBUGFS
1286 struct local_debugfsdentries {
1287 struct dentry *rcdir;
1288 struct dentry *keys;
1289 } debugfs;
1290 #endif
1291
1292 /*
1293 * Remain-on-channel support
1294 */
1295 struct list_head roc_list;
1296 struct work_struct hw_roc_start, hw_roc_done;
1297 unsigned long hw_roc_start_time;
1298 u64 roc_cookie_counter;
1299
1300 struct idr ack_status_frames;
1301 spinlock_t ack_status_lock;
1302
1303 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1304
1305 struct napi_struct *napi;
1306
1307 /* virtual monitor interface */
1308 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1309 struct cfg80211_chan_def monitor_chandef;
1310
1311 /* extended capabilities provided by mac80211 */
1312 u8 ext_capa[8];
1313 };
1314
1315 static inline struct ieee80211_sub_if_data *
1316 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1317 {
1318 return netdev_priv(dev);
1319 }
1320
1321 static inline struct ieee80211_sub_if_data *
1322 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1323 {
1324 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1325 }
1326
1327 /* this struct represents 802.11n's RA/TID combination */
1328 struct ieee80211_ra_tid {
1329 u8 ra[ETH_ALEN];
1330 u16 tid;
1331 };
1332
1333 /* this struct holds the value parsing from channel switch IE */
1334 struct ieee80211_csa_ie {
1335 struct cfg80211_chan_def chandef;
1336 u8 mode;
1337 u8 count;
1338 u8 ttl;
1339 u16 pre_value;
1340 };
1341
1342 /* Parsed Information Elements */
1343 struct ieee802_11_elems {
1344 const u8 *ie_start;
1345 size_t total_len;
1346
1347 /* pointers to IEs */
1348 const u8 *ssid;
1349 const u8 *supp_rates;
1350 const u8 *ds_params;
1351 const struct ieee80211_tim_ie *tim;
1352 const u8 *challenge;
1353 const u8 *rsn;
1354 const u8 *erp_info;
1355 const u8 *ext_supp_rates;
1356 const u8 *wmm_info;
1357 const u8 *wmm_param;
1358 const struct ieee80211_ht_cap *ht_cap_elem;
1359 const struct ieee80211_ht_operation *ht_operation;
1360 const struct ieee80211_vht_cap *vht_cap_elem;
1361 const struct ieee80211_vht_operation *vht_operation;
1362 const struct ieee80211_meshconf_ie *mesh_config;
1363 const u8 *mesh_id;
1364 const u8 *peering;
1365 const __le16 *awake_window;
1366 const u8 *preq;
1367 const u8 *prep;
1368 const u8 *perr;
1369 const struct ieee80211_rann_ie *rann;
1370 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1371 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1372 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1373 const u8 *country_elem;
1374 const u8 *pwr_constr_elem;
1375 const u8 *cisco_dtpc_elem;
1376 const struct ieee80211_timeout_interval_ie *timeout_int;
1377 const u8 *opmode_notif;
1378 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1379 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1380
1381 /* length of them, respectively */
1382 u8 ssid_len;
1383 u8 supp_rates_len;
1384 u8 tim_len;
1385 u8 challenge_len;
1386 u8 rsn_len;
1387 u8 ext_supp_rates_len;
1388 u8 wmm_info_len;
1389 u8 wmm_param_len;
1390 u8 mesh_id_len;
1391 u8 peering_len;
1392 u8 preq_len;
1393 u8 prep_len;
1394 u8 perr_len;
1395 u8 country_elem_len;
1396
1397 /* whether a parse error occurred while retrieving these elements */
1398 bool parse_error;
1399 };
1400
1401 static inline struct ieee80211_local *hw_to_local(
1402 struct ieee80211_hw *hw)
1403 {
1404 return container_of(hw, struct ieee80211_local, hw);
1405 }
1406
1407
1408 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1409 {
1410 return ether_addr_equal(raddr, addr) ||
1411 is_broadcast_ether_addr(raddr);
1412 }
1413
1414 static inline bool
1415 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1416 {
1417 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1418 status->flag & RX_FLAG_MACTIME_END);
1419 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1420 }
1421
1422 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1423 struct ieee80211_rx_status *status,
1424 unsigned int mpdu_len,
1425 unsigned int mpdu_offset);
1426 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1427 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1428 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1429 u32 changed);
1430 void ieee80211_configure_filter(struct ieee80211_local *local);
1431 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1432
1433 /* STA code */
1434 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1435 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1436 struct cfg80211_auth_request *req);
1437 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1438 struct cfg80211_assoc_request *req);
1439 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1440 struct cfg80211_deauth_request *req);
1441 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1442 struct cfg80211_disassoc_request *req);
1443 void ieee80211_send_pspoll(struct ieee80211_local *local,
1444 struct ieee80211_sub_if_data *sdata);
1445 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1446 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1447 int ieee80211_max_network_latency(struct notifier_block *nb,
1448 unsigned long data, void *dummy);
1449 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1450 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1451 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1452 struct sk_buff *skb);
1453 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1454 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1455 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1456 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1457 __le16 fc, bool acked);
1458 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1459 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1460
1461 /* IBSS code */
1462 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1463 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1464 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1465 const u8 *bssid, const u8 *addr, u32 supp_rates);
1466 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1467 struct cfg80211_ibss_params *params);
1468 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1469 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1470 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1471 struct sk_buff *skb);
1472 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1473 struct cfg80211_csa_settings *csa_settings);
1474 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1475 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1476
1477 /* mesh code */
1478 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1479 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1480 struct sk_buff *skb);
1481 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1482 struct cfg80211_csa_settings *csa_settings);
1483 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1484
1485 /* scan/BSS handling */
1486 void ieee80211_scan_work(struct work_struct *work);
1487 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1488 const u8 *ssid, u8 ssid_len,
1489 struct ieee80211_channel *chan,
1490 enum nl80211_bss_scan_width scan_width);
1491 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1492 struct cfg80211_scan_request *req);
1493 void ieee80211_scan_cancel(struct ieee80211_local *local);
1494 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1495 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1496
1497 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1498 struct ieee80211_bss *
1499 ieee80211_bss_info_update(struct ieee80211_local *local,
1500 struct ieee80211_rx_status *rx_status,
1501 struct ieee80211_mgmt *mgmt,
1502 size_t len,
1503 struct ieee802_11_elems *elems,
1504 struct ieee80211_channel *channel);
1505 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1506 struct ieee80211_bss *bss);
1507
1508 /* scheduled scan handling */
1509 int
1510 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1511 struct cfg80211_sched_scan_request *req);
1512 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1513 struct cfg80211_sched_scan_request *req);
1514 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1515 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1516 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1517
1518 /* off-channel helpers */
1519 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1520 void ieee80211_offchannel_return(struct ieee80211_local *local);
1521 void ieee80211_roc_setup(struct ieee80211_local *local);
1522 void ieee80211_start_next_roc(struct ieee80211_local *local);
1523 void ieee80211_roc_purge(struct ieee80211_local *local,
1524 struct ieee80211_sub_if_data *sdata);
1525 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1526 void ieee80211_sw_roc_work(struct work_struct *work);
1527 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1528
1529 /* channel switch handling */
1530 void ieee80211_csa_finalize_work(struct work_struct *work);
1531 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1532 struct cfg80211_csa_settings *params);
1533
1534 /* interface handling */
1535 int ieee80211_iface_init(void);
1536 void ieee80211_iface_exit(void);
1537 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1538 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1539 struct vif_params *params);
1540 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1541 enum nl80211_iftype type);
1542 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1543 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1544 u32 ieee80211_idle_off(struct ieee80211_local *local);
1545 void ieee80211_recalc_idle(struct ieee80211_local *local);
1546 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1547 const int offset);
1548 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1549 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1550 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1551 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1552
1553 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1554 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1555
1556 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1557 {
1558 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1559 }
1560
1561 /* tx handling */
1562 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1563 void ieee80211_tx_pending(unsigned long data);
1564 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1565 struct net_device *dev);
1566 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1567 struct net_device *dev);
1568 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1569 struct sk_buff_head *skbs);
1570
1571 /* HT */
1572 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1573 struct ieee80211_sta_ht_cap *ht_cap);
1574 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1575 struct ieee80211_supported_band *sband,
1576 const struct ieee80211_ht_cap *ht_cap_ie,
1577 struct sta_info *sta);
1578 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1579 const u8 *da, u16 tid,
1580 u16 initiator, u16 reason_code);
1581 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1582 enum ieee80211_smps_mode smps, const u8 *da,
1583 const u8 *bssid);
1584 void ieee80211_request_smps_ap_work(struct work_struct *work);
1585 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1586 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1587 enum ieee80211_smps_mode smps_mode_new);
1588
1589 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1590 u16 initiator, u16 reason, bool stop);
1591 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1592 u16 initiator, u16 reason, bool stop);
1593 void __ieee80211_start_rx_ba_session(struct sta_info *sta,
1594 u8 dialog_token, u16 timeout,
1595 u16 start_seq_num, u16 ba_policy, u16 tid,
1596 u16 buf_size, bool tx, bool auto_seq);
1597 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1598 enum ieee80211_agg_stop_reason reason);
1599 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1600 struct sta_info *sta,
1601 struct ieee80211_mgmt *mgmt, size_t len);
1602 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1603 struct sta_info *sta,
1604 struct ieee80211_mgmt *mgmt,
1605 size_t len);
1606 void ieee80211_process_addba_request(struct ieee80211_local *local,
1607 struct sta_info *sta,
1608 struct ieee80211_mgmt *mgmt,
1609 size_t len);
1610
1611 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1612 enum ieee80211_agg_stop_reason reason);
1613 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1614 enum ieee80211_agg_stop_reason reason);
1615 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1616 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1617 void ieee80211_ba_session_work(struct work_struct *work);
1618 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1619 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1620
1621 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1622
1623 /* VHT */
1624 void
1625 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1626 struct ieee80211_supported_band *sband,
1627 const struct ieee80211_vht_cap *vht_cap_ie,
1628 struct sta_info *sta);
1629 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1630 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1631 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1632 struct sta_info *sta, u8 opmode,
1633 enum ieee80211_band band, bool nss_only);
1634 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1635 struct sta_info *sta, u8 opmode,
1636 enum ieee80211_band band, bool nss_only);
1637 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1638 struct ieee80211_sta_vht_cap *vht_cap);
1639
1640 /* Spectrum management */
1641 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1642 struct ieee80211_mgmt *mgmt,
1643 size_t len);
1644 /**
1645 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1646 * @sdata: the sdata of the interface which has received the frame
1647 * @elems: parsed 802.11 elements received with the frame
1648 * @beacon: indicates if the frame was a beacon or probe response
1649 * @current_band: indicates the current band
1650 * @sta_flags: contains information about own capabilities and restrictions
1651 * to decide which channel switch announcements can be accepted. Only the
1652 * following subset of &enum ieee80211_sta_flags are evaluated:
1653 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1654 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1655 * %IEEE80211_STA_DISABLE_160MHZ.
1656 * @bssid: the currently connected bssid (for reporting)
1657 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1658 All of them will be filled with if success only.
1659 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1660 */
1661 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1662 struct ieee802_11_elems *elems, bool beacon,
1663 enum ieee80211_band current_band,
1664 u32 sta_flags, u8 *bssid,
1665 struct ieee80211_csa_ie *csa_ie);
1666
1667 /* Suspend/resume and hw reconfiguration */
1668 int ieee80211_reconfig(struct ieee80211_local *local);
1669 void ieee80211_stop_device(struct ieee80211_local *local);
1670
1671 int __ieee80211_suspend(struct ieee80211_hw *hw,
1672 struct cfg80211_wowlan *wowlan);
1673
1674 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1675 {
1676 struct ieee80211_local *local = hw_to_local(hw);
1677
1678 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1679 "%s: resume with hardware scan still in progress\n",
1680 wiphy_name(hw->wiphy));
1681
1682 return ieee80211_reconfig(hw_to_local(hw));
1683 }
1684
1685 /* utility functions/constants */
1686 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1687 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1688 enum nl80211_iftype type);
1689 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1690 int rate, int erp, int short_preamble,
1691 int shift);
1692 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1693 struct ieee80211_hdr *hdr, const u8 *tsc,
1694 gfp_t gfp);
1695 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1696 bool bss_notify);
1697 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1698 enum ieee80211_band band);
1699
1700 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1701 struct sk_buff *skb, int tid,
1702 enum ieee80211_band band);
1703
1704 static inline void
1705 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1706 struct sk_buff *skb, int tid,
1707 enum ieee80211_band band)
1708 {
1709 rcu_read_lock();
1710 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1711 rcu_read_unlock();
1712 }
1713
1714 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1715 struct sk_buff *skb, int tid)
1716 {
1717 struct ieee80211_chanctx_conf *chanctx_conf;
1718
1719 rcu_read_lock();
1720 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1721 if (WARN_ON(!chanctx_conf)) {
1722 rcu_read_unlock();
1723 kfree_skb(skb);
1724 return;
1725 }
1726
1727 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1728 chanctx_conf->def.chan->band);
1729 rcu_read_unlock();
1730 }
1731
1732 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1733 struct sk_buff *skb)
1734 {
1735 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1736 ieee80211_tx_skb_tid(sdata, skb, 7);
1737 }
1738
1739 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1740 struct ieee802_11_elems *elems,
1741 u64 filter, u32 crc);
1742 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1743 bool action,
1744 struct ieee802_11_elems *elems)
1745 {
1746 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1747 }
1748
1749 static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames)
1750 {
1751 struct sk_buff *tail = skb_peek_tail(frames);
1752 struct ieee80211_rx_status *status;
1753
1754 if (!tail)
1755 return false;
1756
1757 status = IEEE80211_SKB_RXCB(tail);
1758 if (status->flag & RX_FLAG_AMSDU_MORE)
1759 return false;
1760
1761 return true;
1762 }
1763
1764 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1765 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1766 void ieee80211_dynamic_ps_timer(unsigned long data);
1767 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1768 struct ieee80211_sub_if_data *sdata,
1769 int powersave);
1770 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1771 struct ieee80211_hdr *hdr);
1772 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1773 struct ieee80211_hdr *hdr, bool ack);
1774
1775 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1776 unsigned long queues,
1777 enum queue_stop_reason reason,
1778 bool refcounted);
1779 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1780 struct ieee80211_sub_if_data *sdata,
1781 enum queue_stop_reason reason);
1782 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1783 struct ieee80211_sub_if_data *sdata,
1784 enum queue_stop_reason reason);
1785 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1786 unsigned long queues,
1787 enum queue_stop_reason reason,
1788 bool refcounted);
1789 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1790 enum queue_stop_reason reason,
1791 bool refcounted);
1792 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1793 enum queue_stop_reason reason,
1794 bool refcounted);
1795 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1796 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1797 struct sk_buff *skb);
1798 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1799 struct sk_buff_head *skbs);
1800 void ieee80211_flush_queues(struct ieee80211_local *local,
1801 struct ieee80211_sub_if_data *sdata);
1802
1803 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1804 u16 transaction, u16 auth_alg, u16 status,
1805 const u8 *extra, size_t extra_len, const u8 *bssid,
1806 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1807 u32 tx_flags);
1808 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1809 const u8 *bssid, u16 stype, u16 reason,
1810 bool send_frame, u8 *frame_buf);
1811 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1812 size_t buffer_len,
1813 struct ieee80211_scan_ies *ie_desc,
1814 const u8 *ie, size_t ie_len,
1815 u8 bands_used, u32 *rate_masks,
1816 struct cfg80211_chan_def *chandef);
1817 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1818 u8 *dst, u32 ratemask,
1819 struct ieee80211_channel *chan,
1820 const u8 *ssid, size_t ssid_len,
1821 const u8 *ie, size_t ie_len,
1822 bool directed);
1823 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1824 const u8 *ssid, size_t ssid_len,
1825 const u8 *ie, size_t ie_len,
1826 u32 ratemask, bool directed, u32 tx_flags,
1827 struct ieee80211_channel *channel, bool scan);
1828
1829 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1830 struct ieee802_11_elems *elems,
1831 enum ieee80211_band band, u32 *basic_rates);
1832 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1833 enum ieee80211_smps_mode smps_mode);
1834 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1835 enum ieee80211_smps_mode smps_mode);
1836 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1837 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
1838
1839 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1840 const u8 *ids, int n_ids, size_t offset);
1841 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1842 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1843 u16 cap);
1844 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1845 const struct cfg80211_chan_def *chandef,
1846 u16 prot_mode);
1847 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1848 u32 cap);
1849 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1850 const struct ieee80211_supported_band *sband,
1851 const u8 *srates, int srates_len, u32 *rates);
1852 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1853 struct sk_buff *skb, bool need_basic,
1854 enum ieee80211_band band);
1855 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1856 struct sk_buff *skb, bool need_basic,
1857 enum ieee80211_band band);
1858 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
1859
1860 /* channel management */
1861 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1862 const struct ieee80211_ht_operation *ht_oper,
1863 struct cfg80211_chan_def *chandef);
1864 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
1865
1866 int __must_check
1867 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1868 const struct cfg80211_chan_def *chandef,
1869 enum ieee80211_chanctx_mode mode);
1870 int __must_check
1871 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
1872 const struct cfg80211_chan_def *chandef,
1873 enum ieee80211_chanctx_mode mode,
1874 bool radar_required);
1875 int __must_check
1876 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
1877 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
1878
1879 int __must_check
1880 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
1881 const struct cfg80211_chan_def *chandef,
1882 u32 *changed);
1883 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
1884 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
1885 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
1886 bool clear);
1887 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
1888 struct ieee80211_chanctx *ctx);
1889
1890 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
1891 struct ieee80211_chanctx *chanctx);
1892 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
1893 struct ieee80211_chanctx *ctx);
1894
1895 void ieee80211_dfs_cac_timer(unsigned long data);
1896 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
1897 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
1898 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
1899 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
1900 struct cfg80211_csa_settings *csa_settings);
1901
1902 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
1903 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
1904 const struct ieee80211_cipher_scheme *
1905 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
1906 enum nl80211_iftype iftype);
1907 int ieee80211_cs_headroom(struct ieee80211_local *local,
1908 struct cfg80211_crypto_settings *crypto,
1909 enum nl80211_iftype iftype);
1910 void ieee80211_recalc_dtim(struct ieee80211_local *local,
1911 struct ieee80211_sub_if_data *sdata);
1912 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
1913 const struct cfg80211_chan_def *chandef,
1914 enum ieee80211_chanctx_mode chanmode,
1915 u8 radar_detect);
1916 int ieee80211_max_num_channels(struct ieee80211_local *local);
1917
1918 /* TDLS */
1919 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
1920 const u8 *peer, u8 action_code, u8 dialog_token,
1921 u16 status_code, u32 peer_capability,
1922 bool initiator, const u8 *extra_ies,
1923 size_t extra_ies_len);
1924 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
1925 const u8 *peer, enum nl80211_tdls_operation oper);
1926 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
1927
1928 extern const struct ethtool_ops ieee80211_ethtool_ops;
1929
1930 #ifdef CONFIG_MAC80211_NOINLINE
1931 #define debug_noinline noinline
1932 #else
1933 #define debug_noinline
1934 #endif
1935
1936 #endif /* IEEE80211_I_H */