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Linux 3.12.28
[linux/fpc-iii.git] / net / mac80211 / ieee80211_i.h
blob23c13165ce83cee1afe7e8002dc1ec60c1610107
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 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12 #ifndef IEEE80211_I_H
13 #define IEEE80211_I_H
14
15 #include <linux/kernel.h>
16 #include <linux/device.h>
17 #include <linux/if_ether.h>
18 #include <linux/interrupt.h>
19 #include <linux/list.h>
20 #include <linux/netdevice.h>
21 #include <linux/skbuff.h>
22 #include <linux/workqueue.h>
23 #include <linux/types.h>
24 #include <linux/spinlock.h>
25 #include <linux/etherdevice.h>
26 #include <linux/leds.h>
27 #include <linux/idr.h>
28 #include <net/ieee80211_radiotap.h>
29 #include <net/cfg80211.h>
30 #include <net/mac80211.h>
31 #include "key.h"
32 #include "sta_info.h"
33 #include "debug.h"
34
35 struct ieee80211_local;
36
37 /* Maximum number of broadcast/multicast frames to buffer when some of the
38 * associated stations are using power saving. */
39 #define AP_MAX_BC_BUFFER 128
40
41 /* Maximum number of frames buffered to all STAs, including multicast frames.
42 * Note: increasing this limit increases the potential memory requirement. Each
43 * frame can be up to about 2 kB long. */
44 #define TOTAL_MAX_TX_BUFFER 512
45
46 /* Required encryption head and tailroom */
47 #define IEEE80211_ENCRYPT_HEADROOM 8
48 #define IEEE80211_ENCRYPT_TAILROOM 18
49
50 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
51 * reception of at least three fragmented frames. This limit can be increased
52 * by changing this define, at the cost of slower frame reassembly and
53 * increased memory use (about 2 kB of RAM per entry). */
54 #define IEEE80211_FRAGMENT_MAX 4
55
56 /* power level hasn't been configured (or set to automatic) */
57 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
58
59 /*
60 * Some APs experience problems when working with U-APSD. Decrease the
61 * probability of that happening by using legacy mode for all ACs but VO.
62 * The AP that caused us trouble was a Cisco 4410N. It ignores our
63 * setting, and always treats non-VO ACs as legacy.
64 */
65 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
66 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO
67
68 #define IEEE80211_DEFAULT_MAX_SP_LEN \
69 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
70
71 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
72
73 struct ieee80211_fragment_entry {
74 unsigned long first_frag_time;
75 unsigned int seq;
76 unsigned int rx_queue;
77 unsigned int last_frag;
78 unsigned int extra_len;
79 struct sk_buff_head skb_list;
80 int ccmp; /* Whether fragments were encrypted with CCMP */
81 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
82 };
83
84
85 struct ieee80211_bss {
86 u32 device_ts_beacon, device_ts_presp;
87
88 bool wmm_used;
89 bool uapsd_supported;
90
91 #define IEEE80211_MAX_SUPP_RATES 32
92 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
93 size_t supp_rates_len;
94 struct ieee80211_rate *beacon_rate;
95
96 /*
97 * During association, we save an ERP value from a probe response so
98 * that we can feed ERP info to the driver when handling the
99 * association completes. these fields probably won't be up-to-date
100 * otherwise, you probably don't want to use them.
101 */
102 bool has_erp_value;
103 u8 erp_value;
104
105 /* Keep track of the corruption of the last beacon/probe response. */
106 u8 corrupt_data;
107
108 /* Keep track of what bits of information we have valid info for. */
109 u8 valid_data;
110 };
111
112 /**
113 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
114 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
115 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
116 *
117 * These are bss flags that are attached to a bss in the
118 * @corrupt_data field of &struct ieee80211_bss.
119 */
120 enum ieee80211_bss_corrupt_data_flags {
121 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
122 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
123 };
124
125 /**
126 * enum ieee80211_valid_data_flags - BSS valid data flags
127 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
128 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
129 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
130 *
131 * These are bss flags that are attached to a bss in the
132 * @valid_data field of &struct ieee80211_bss. They show which parts
133 * of the data structure were recieved as a result of an un-corrupted
134 * beacon/probe response.
135 */
136 enum ieee80211_bss_valid_data_flags {
137 IEEE80211_BSS_VALID_WMM = BIT(1),
138 IEEE80211_BSS_VALID_RATES = BIT(2),
139 IEEE80211_BSS_VALID_ERP = BIT(3)
140 };
141
142 typedef unsigned __bitwise__ ieee80211_tx_result;
143 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
144 #define TX_DROP ((__force ieee80211_tx_result) 1u)
145 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
146
147 #define IEEE80211_TX_UNICAST BIT(1)
148 #define IEEE80211_TX_PS_BUFFERED BIT(2)
149
150 struct ieee80211_tx_data {
151 struct sk_buff *skb;
152 struct sk_buff_head skbs;
153 struct ieee80211_local *local;
154 struct ieee80211_sub_if_data *sdata;
155 struct sta_info *sta;
156 struct ieee80211_key *key;
157 struct ieee80211_tx_rate rate;
158
159 unsigned int flags;
160 };
161
162
163 typedef unsigned __bitwise__ ieee80211_rx_result;
164 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
165 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
166 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
167 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
168
169 /**
170 * enum ieee80211_packet_rx_flags - packet RX flags
171 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
172 * (incl. multicast frames)
173 * @IEEE80211_RX_FRAGMENTED: fragmented frame
174 * @IEEE80211_RX_AMSDU: a-MSDU packet
175 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
176 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
177 *
178 * These are per-frame flags that are attached to a frame in the
179 * @rx_flags field of &struct ieee80211_rx_status.
180 */
181 enum ieee80211_packet_rx_flags {
182 IEEE80211_RX_RA_MATCH = BIT(1),
183 IEEE80211_RX_FRAGMENTED = BIT(2),
184 IEEE80211_RX_AMSDU = BIT(3),
185 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
186 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
187 };
188
189 /**
190 * enum ieee80211_rx_flags - RX data flags
191 *
192 * @IEEE80211_RX_CMNTR: received on cooked monitor already
193 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
194 * to cfg80211_report_obss_beacon().
195 *
196 * These flags are used across handling multiple interfaces
197 * for a single frame.
198 */
199 enum ieee80211_rx_flags {
200 IEEE80211_RX_CMNTR = BIT(0),
201 IEEE80211_RX_BEACON_REPORTED = BIT(1),
202 };
203
204 struct ieee80211_rx_data {
205 struct sk_buff *skb;
206 struct ieee80211_local *local;
207 struct ieee80211_sub_if_data *sdata;
208 struct sta_info *sta;
209 struct ieee80211_key *key;
210
211 unsigned int flags;
212
213 /*
214 * Index into sequence numbers array, 0..16
215 * since the last (16) is used for non-QoS,
216 * will be 16 on non-QoS frames.
217 */
218 int seqno_idx;
219
220 /*
221 * Index into the security IV/PN arrays, 0..16
222 * since the last (16) is used for CCMP-encrypted
223 * management frames, will be set to 16 on mgmt
224 * frames and 0 on non-QoS frames.
225 */
226 int security_idx;
227
228 u32 tkip_iv32;
229 u16 tkip_iv16;
230 };
231
232 struct beacon_data {
233 u8 *head, *tail;
234 int head_len, tail_len;
235 struct rcu_head rcu_head;
236 };
237
238 struct probe_resp {
239 struct rcu_head rcu_head;
240 int len;
241 u8 data[0];
242 };
243
244 struct ps_data {
245 /* yes, this looks ugly, but guarantees that we can later use
246 * bitmap_empty :)
247 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
248 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
249 struct sk_buff_head bc_buf;
250 atomic_t num_sta_ps; /* number of stations in PS mode */
251 int dtim_count;
252 bool dtim_bc_mc;
253 };
254
255 struct ieee80211_if_ap {
256 struct beacon_data __rcu *beacon;
257 struct probe_resp __rcu *probe_resp;
258
259 /* to be used after channel switch. */
260 struct cfg80211_beacon_data *next_beacon;
261 struct list_head vlans;
262
263 struct ps_data ps;
264 atomic_t num_mcast_sta; /* number of stations receiving multicast */
265 };
266
267 struct ieee80211_if_wds {
268 struct sta_info *sta;
269 u8 remote_addr[ETH_ALEN];
270 };
271
272 struct ieee80211_if_vlan {
273 struct list_head list;
274
275 /* used for all tx if the VLAN is configured to 4-addr mode */
276 struct sta_info __rcu *sta;
277 };
278
279 struct mesh_stats {
280 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
281 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
282 __u32 fwded_frames; /* Mesh total forwarded frames */
283 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
284 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
285 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
286 };
287
288 #define PREQ_Q_F_START 0x1
289 #define PREQ_Q_F_REFRESH 0x2
290 struct mesh_preq_queue {
291 struct list_head list;
292 u8 dst[ETH_ALEN];
293 u8 flags;
294 };
295
296 #if HZ/100 == 0
297 #define IEEE80211_ROC_MIN_LEFT 1
298 #else
299 #define IEEE80211_ROC_MIN_LEFT (HZ/100)
300 #endif
301
302 struct ieee80211_roc_work {
303 struct list_head list;
304 struct list_head dependents;
305
306 struct delayed_work work;
307
308 struct ieee80211_sub_if_data *sdata;
309
310 struct ieee80211_channel *chan;
311
312 bool started, abort, hw_begun, notified;
313 bool to_be_freed;
314 bool on_channel;
315
316 unsigned long hw_start_time;
317
318 u32 duration, req_duration;
319 struct sk_buff *frame;
320 u64 cookie, mgmt_tx_cookie;
321 enum ieee80211_roc_type type;
322 };
323
324 /* flags used in struct ieee80211_if_managed.flags */
325 enum ieee80211_sta_flags {
326 IEEE80211_STA_BEACON_POLL = BIT(0),
327 IEEE80211_STA_CONNECTION_POLL = BIT(1),
328 IEEE80211_STA_CONTROL_PORT = BIT(2),
329 IEEE80211_STA_DISABLE_HT = BIT(4),
330 IEEE80211_STA_CSA_RECEIVED = BIT(5),
331 IEEE80211_STA_MFP_ENABLED = BIT(6),
332 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
333 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
334 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
335 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
336 IEEE80211_STA_DISABLE_VHT = BIT(11),
337 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
338 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
339 };
340
341 struct ieee80211_mgd_auth_data {
342 struct cfg80211_bss *bss;
343 unsigned long timeout;
344 int tries;
345 u16 algorithm, expected_transaction;
346
347 u8 key[WLAN_KEY_LEN_WEP104];
348 u8 key_len, key_idx;
349 bool done;
350 bool timeout_started;
351
352 u16 sae_trans, sae_status;
353 size_t data_len;
354 u8 data[];
355 };
356
357 struct ieee80211_mgd_assoc_data {
358 struct cfg80211_bss *bss;
359 const u8 *supp_rates;
360
361 unsigned long timeout;
362 int tries;
363
364 u16 capability;
365 u8 prev_bssid[ETH_ALEN];
366 u8 ssid[IEEE80211_MAX_SSID_LEN];
367 u8 ssid_len;
368 u8 supp_rates_len;
369 bool wmm, uapsd;
370 bool need_beacon;
371 bool synced;
372 bool timeout_started;
373
374 u8 ap_ht_param;
375
376 struct ieee80211_vht_cap ap_vht_cap;
377
378 size_t ie_len;
379 u8 ie[];
380 };
381
382 struct ieee80211_if_managed {
383 struct timer_list timer;
384 struct timer_list conn_mon_timer;
385 struct timer_list bcn_mon_timer;
386 struct timer_list chswitch_timer;
387 struct work_struct monitor_work;
388 struct work_struct chswitch_work;
389 struct work_struct beacon_connection_loss_work;
390 struct work_struct csa_connection_drop_work;
391
392 unsigned long beacon_timeout;
393 unsigned long probe_timeout;
394 int probe_send_count;
395 bool nullfunc_failed;
396 bool connection_loss;
397
398 struct cfg80211_bss *associated;
399 struct ieee80211_mgd_auth_data *auth_data;
400 struct ieee80211_mgd_assoc_data *assoc_data;
401
402 u8 bssid[ETH_ALEN];
403
404 u16 aid;
405
406 bool powersave; /* powersave requested for this iface */
407 bool broken_ap; /* AP is broken -- turn off powersave */
408 bool have_beacon;
409 u8 dtim_period;
410 enum ieee80211_smps_mode req_smps, /* requested smps mode */
411 driver_smps_mode; /* smps mode request */
412
413 struct work_struct request_smps_work;
414
415 unsigned int flags;
416
417 bool beacon_crc_valid;
418 u32 beacon_crc;
419
420 bool status_acked;
421 bool status_received;
422 __le16 status_fc;
423
424 enum {
425 IEEE80211_MFP_DISABLED,
426 IEEE80211_MFP_OPTIONAL,
427 IEEE80211_MFP_REQUIRED
428 } mfp; /* management frame protection */
429
430 /*
431 * Bitmask of enabled u-apsd queues,
432 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
433 * to take effect.
434 */
435 unsigned int uapsd_queues;
436
437 /*
438 * Maximum number of buffered frames AP can deliver during a
439 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
440 * Needs a new association to take effect.
441 */
442 unsigned int uapsd_max_sp_len;
443
444 int wmm_last_param_set;
445
446 u8 use_4addr;
447
448 s16 p2p_noa_index;
449
450 /* Signal strength from the last Beacon frame in the current BSS. */
451 int last_beacon_signal;
452
453 /*
454 * Weighted average of the signal strength from Beacon frames in the
455 * current BSS. This is in units of 1/16 of the signal unit to maintain
456 * accuracy and to speed up calculations, i.e., the value need to be
457 * divided by 16 to get the actual value.
458 */
459 int ave_beacon_signal;
460
461 /*
462 * Number of Beacon frames used in ave_beacon_signal. This can be used
463 * to avoid generating less reliable cqm events that would be based
464 * only on couple of received frames.
465 */
466 unsigned int count_beacon_signal;
467
468 /*
469 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
470 * that triggered a cqm event. 0 indicates that no event has been
471 * generated for the current association.
472 */
473 int last_cqm_event_signal;
474
475 /*
476 * State variables for keeping track of RSSI of the AP currently
477 * connected to and informing driver when RSSI has gone
478 * below/above a certain threshold.
479 */
480 int rssi_min_thold, rssi_max_thold;
481 int last_ave_beacon_signal;
482
483 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
484 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
485 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
486 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
487 };
488
489 struct ieee80211_if_ibss {
490 struct timer_list timer;
491
492 unsigned long last_scan_completed;
493
494 u32 basic_rates;
495
496 bool fixed_bssid;
497 bool fixed_channel;
498 bool privacy;
499
500 bool control_port;
501
502 u8 bssid[ETH_ALEN] __aligned(2);
503 u8 ssid[IEEE80211_MAX_SSID_LEN];
504 u8 ssid_len, ie_len;
505 u8 *ie;
506 struct cfg80211_chan_def chandef;
507
508 unsigned long ibss_join_req;
509 /* probe response/beacon for IBSS */
510 struct beacon_data __rcu *presp;
511
512 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
513 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
514
515 spinlock_t incomplete_lock;
516 struct list_head incomplete_stations;
517
518 enum {
519 IEEE80211_IBSS_MLME_SEARCH,
520 IEEE80211_IBSS_MLME_JOINED,
521 } state;
522 };
523
524 /**
525 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
526 *
527 * these declarations define the interface, which enables
528 * vendor-specific mesh synchronization
529 *
530 */
531 struct ieee802_11_elems;
532 struct ieee80211_mesh_sync_ops {
533 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
534 u16 stype,
535 struct ieee80211_mgmt *mgmt,
536 struct ieee802_11_elems *elems,
537 struct ieee80211_rx_status *rx_status);
538 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata);
539 /* add other framework functions here */
540 };
541
542 struct ieee80211_if_mesh {
543 struct timer_list housekeeping_timer;
544 struct timer_list mesh_path_timer;
545 struct timer_list mesh_path_root_timer;
546
547 unsigned long wrkq_flags;
548 unsigned long mbss_changed;
549
550 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
551 size_t mesh_id_len;
552 /* Active Path Selection Protocol Identifier */
553 u8 mesh_pp_id;
554 /* Active Path Selection Metric Identifier */
555 u8 mesh_pm_id;
556 /* Congestion Control Mode Identifier */
557 u8 mesh_cc_id;
558 /* Synchronization Protocol Identifier */
559 u8 mesh_sp_id;
560 /* Authentication Protocol Identifier */
561 u8 mesh_auth_id;
562 /* Local mesh Sequence Number */
563 u32 sn;
564 /* Last used PREQ ID */
565 u32 preq_id;
566 atomic_t mpaths;
567 /* Timestamp of last SN update */
568 unsigned long last_sn_update;
569 /* Time when it's ok to send next PERR */
570 unsigned long next_perr;
571 /* Timestamp of last PREQ sent */
572 unsigned long last_preq;
573 struct mesh_rmc *rmc;
574 spinlock_t mesh_preq_queue_lock;
575 struct mesh_preq_queue preq_queue;
576 int preq_queue_len;
577 struct mesh_stats mshstats;
578 struct mesh_config mshcfg;
579 atomic_t estab_plinks;
580 u32 mesh_seqnum;
581 bool accepting_plinks;
582 int num_gates;
583 struct beacon_data __rcu *beacon;
584 const u8 *ie;
585 u8 ie_len;
586 enum {
587 IEEE80211_MESH_SEC_NONE = 0x0,
588 IEEE80211_MESH_SEC_AUTHED = 0x1,
589 IEEE80211_MESH_SEC_SECURED = 0x2,
590 } security;
591 bool user_mpm;
592 /* Extensible Synchronization Framework */
593 const struct ieee80211_mesh_sync_ops *sync_ops;
594 s64 sync_offset_clockdrift_max;
595 spinlock_t sync_offset_lock;
596 bool adjusting_tbtt;
597 /* mesh power save */
598 enum nl80211_mesh_power_mode nonpeer_pm;
599 int ps_peers_light_sleep;
600 int ps_peers_deep_sleep;
601 struct ps_data ps;
602 };
603
604 #ifdef CONFIG_MAC80211_MESH
605 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
606 do { (msh)->mshstats.name++; } while (0)
607 #else
608 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
609 do { } while (0)
610 #endif
611
612 /**
613 * enum ieee80211_sub_if_data_flags - virtual interface flags
614 *
615 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
616 * @IEEE80211_SDATA_PROMISC: interface is promisc
617 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
618 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
619 * associated stations and deliver multicast frames both
620 * back to wireless media and to the local net stack.
621 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
622 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
623 */
624 enum ieee80211_sub_if_data_flags {
625 IEEE80211_SDATA_ALLMULTI = BIT(0),
626 IEEE80211_SDATA_PROMISC = BIT(1),
627 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
628 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
629 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
630 IEEE80211_SDATA_IN_DRIVER = BIT(5),
631 };
632
633 /**
634 * enum ieee80211_sdata_state_bits - virtual interface state bits
635 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
636 * mirrors netif_running() but is separate for interface type
637 * change handling while the interface is up
638 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
639 * mode, so queues are stopped
640 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
641 * to offchannel, reset when offchannel returns
642 */
643 enum ieee80211_sdata_state_bits {
644 SDATA_STATE_RUNNING,
645 SDATA_STATE_OFFCHANNEL,
646 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
647 };
648
649 /**
650 * enum ieee80211_chanctx_mode - channel context configuration mode
651 *
652 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
653 * multiple interfaces
654 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
655 * only by a single interface. This can be used for example for
656 * non-fixed channel IBSS.
657 */
658 enum ieee80211_chanctx_mode {
659 IEEE80211_CHANCTX_SHARED,
660 IEEE80211_CHANCTX_EXCLUSIVE
661 };
662
663 struct ieee80211_chanctx {
664 struct list_head list;
665 struct rcu_head rcu_head;
666
667 enum ieee80211_chanctx_mode mode;
668 int refcount;
669 bool driver_present;
670
671 struct ieee80211_chanctx_conf conf;
672 };
673
674 struct ieee80211_sub_if_data {
675 struct list_head list;
676
677 struct wireless_dev wdev;
678
679 /* keys */
680 struct list_head key_list;
681
682 /* count for keys needing tailroom space allocation */
683 int crypto_tx_tailroom_needed_cnt;
684 int crypto_tx_tailroom_pending_dec;
685 struct delayed_work dec_tailroom_needed_wk;
686
687 struct net_device *dev;
688 struct ieee80211_local *local;
689
690 unsigned int flags;
691
692 unsigned long state;
693
694 int drop_unencrypted;
695
696 char name[IFNAMSIZ];
697
698 /* Fragment table for host-based reassembly */
699 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
700 unsigned int fragment_next;
701
702 /* TID bitmap for NoAck policy */
703 u16 noack_map;
704
705 /* bit field of ACM bits (BIT(802.1D tag)) */
706 u8 wmm_acm;
707
708 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
709 struct ieee80211_key __rcu *default_unicast_key;
710 struct ieee80211_key __rcu *default_multicast_key;
711 struct ieee80211_key __rcu *default_mgmt_key;
712
713 u16 sequence_number;
714 __be16 control_port_protocol;
715 bool control_port_no_encrypt;
716
717 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
718
719 struct work_struct csa_finalize_work;
720 int csa_counter_offset_beacon;
721 int csa_counter_offset_presp;
722 bool csa_radar_required;
723
724 /* used to reconfigure hardware SM PS */
725 struct work_struct recalc_smps;
726
727 struct work_struct work;
728 struct sk_buff_head skb_queue;
729
730 u8 needed_rx_chains;
731 enum ieee80211_smps_mode smps_mode;
732
733 int user_power_level; /* in dBm */
734 int ap_power_level; /* in dBm */
735
736 bool radar_required;
737 struct delayed_work dfs_cac_timer_work;
738
739 /*
740 * AP this belongs to: self in AP mode and
741 * corresponding AP in VLAN mode, NULL for
742 * all others (might be needed later in IBSS)
743 */
744 struct ieee80211_if_ap *bss;
745
746 /* bitmap of allowed (non-MCS) rate indexes for rate control */
747 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
748
749 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
750 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
751
752 union {
753 struct ieee80211_if_ap ap;
754 struct ieee80211_if_wds wds;
755 struct ieee80211_if_vlan vlan;
756 struct ieee80211_if_managed mgd;
757 struct ieee80211_if_ibss ibss;
758 struct ieee80211_if_mesh mesh;
759 u32 mntr_flags;
760 } u;
761
762 spinlock_t cleanup_stations_lock;
763 struct list_head cleanup_stations;
764 struct work_struct cleanup_stations_wk;
765
766 #ifdef CONFIG_MAC80211_DEBUGFS
767 struct {
768 struct dentry *subdir_stations;
769 struct dentry *default_unicast_key;
770 struct dentry *default_multicast_key;
771 struct dentry *default_mgmt_key;
772 } debugfs;
773 #endif
774
775 /* must be last, dynamically sized area in this! */
776 struct ieee80211_vif vif;
777 };
778
779 static inline
780 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
781 {
782 return container_of(p, struct ieee80211_sub_if_data, vif);
783 }
784
785 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
786 __acquires(&sdata->wdev.mtx)
787 {
788 mutex_lock(&sdata->wdev.mtx);
789 __acquire(&sdata->wdev.mtx);
790 }
791
792 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
793 __releases(&sdata->wdev.mtx)
794 {
795 mutex_unlock(&sdata->wdev.mtx);
796 __release(&sdata->wdev.mtx);
797 }
798
799 static inline void
800 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
801 {
802 lockdep_assert_held(&sdata->wdev.mtx);
803 }
804
805 static inline enum ieee80211_band
806 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
807 {
808 enum ieee80211_band band = IEEE80211_BAND_2GHZ;
809 struct ieee80211_chanctx_conf *chanctx_conf;
810
811 rcu_read_lock();
812 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
813 if (!WARN_ON(!chanctx_conf))
814 band = chanctx_conf->def.chan->band;
815 rcu_read_unlock();
816
817 return band;
818 }
819
820 static inline int
821 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
822 {
823 switch (chandef->width) {
824 case NL80211_CHAN_WIDTH_5:
825 return 2;
826 case NL80211_CHAN_WIDTH_10:
827 return 1;
828 default:
829 return 0;
830 }
831 }
832
833 static inline int
834 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
835 {
836 struct ieee80211_chanctx_conf *chanctx_conf;
837 int shift = 0;
838
839 rcu_read_lock();
840 chanctx_conf = rcu_dereference(vif->chanctx_conf);
841 if (chanctx_conf)
842 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
843 rcu_read_unlock();
844
845 return shift;
846 }
847
848 enum sdata_queue_type {
849 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
850 IEEE80211_SDATA_QUEUE_AGG_START = 1,
851 IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
852 };
853
854 enum {
855 IEEE80211_RX_MSG = 1,
856 IEEE80211_TX_STATUS_MSG = 2,
857 };
858
859 enum queue_stop_reason {
860 IEEE80211_QUEUE_STOP_REASON_DRIVER,
861 IEEE80211_QUEUE_STOP_REASON_PS,
862 IEEE80211_QUEUE_STOP_REASON_CSA,
863 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
864 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
865 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
866 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
867 IEEE80211_QUEUE_STOP_REASON_FLUSH,
868 };
869
870 #ifdef CONFIG_MAC80211_LEDS
871 struct tpt_led_trigger {
872 struct led_trigger trig;
873 char name[32];
874 const struct ieee80211_tpt_blink *blink_table;
875 unsigned int blink_table_len;
876 struct timer_list timer;
877 unsigned long prev_traffic;
878 unsigned long tx_bytes, rx_bytes;
879 unsigned int active, want;
880 bool running;
881 };
882 #endif
883
884 /**
885 * mac80211 scan flags - currently active scan mode
886 *
887 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
888 * well be on the operating channel
889 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
890 * determine if we are on the operating channel or not
891 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
892 * channel. This should not interrupt normal traffic.
893 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
894 * that the scan completed.
895 * @SCAN_ABORTED: Set for our scan work function when the driver reported
896 * a scan complete for an aborted scan.
897 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
898 * cancelled.
899 */
900 enum {
901 SCAN_SW_SCANNING,
902 SCAN_HW_SCANNING,
903 SCAN_ONCHANNEL_SCANNING,
904 SCAN_COMPLETED,
905 SCAN_ABORTED,
906 SCAN_HW_CANCELLED,
907 };
908
909 /**
910 * enum mac80211_scan_state - scan state machine states
911 *
912 * @SCAN_DECISION: Main entry point to the scan state machine, this state
913 * determines if we should keep on scanning or switch back to the
914 * operating channel
915 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
916 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
917 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
918 * send out data
919 * @SCAN_RESUME: Resume the scan and scan the next channel
920 * @SCAN_ABORT: Abort the scan and go back to operating channel
921 */
922 enum mac80211_scan_state {
923 SCAN_DECISION,
924 SCAN_SET_CHANNEL,
925 SCAN_SEND_PROBE,
926 SCAN_SUSPEND,
927 SCAN_RESUME,
928 SCAN_ABORT,
929 };
930
931 struct ieee80211_local {
932 /* embed the driver visible part.
933 * don't cast (use the static inlines below), but we keep
934 * it first anyway so they become a no-op */
935 struct ieee80211_hw hw;
936
937 const struct ieee80211_ops *ops;
938
939 /*
940 * private workqueue to mac80211. mac80211 makes this accessible
941 * via ieee80211_queue_work()
942 */
943 struct workqueue_struct *workqueue;
944
945 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
946 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
947 spinlock_t queue_stop_reason_lock;
948
949 int open_count;
950 int monitors, cooked_mntrs;
951 /* number of interfaces with corresponding FIF_ flags */
952 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
953 fif_probe_req;
954 int probe_req_reg;
955 unsigned int filter_flags; /* FIF_* */
956
957 bool wiphy_ciphers_allocated;
958
959 bool use_chanctx;
960
961 /* protects the aggregated multicast list and filter calls */
962 spinlock_t filter_lock;
963
964 /* used for uploading changed mc list */
965 struct work_struct reconfig_filter;
966
967 /* aggregated multicast list */
968 struct netdev_hw_addr_list mc_list;
969
970 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
971
972 /*
973 * suspended is true if we finished all the suspend _and_ we have
974 * not yet come up from resume. This is to be used by mac80211
975 * to ensure driver sanity during suspend and mac80211's own
976 * sanity. It can eventually be used for WoW as well.
977 */
978 bool suspended;
979
980 /*
981 * Resuming is true while suspended, but when we're reprogramming the
982 * hardware -- at that time it's allowed to use ieee80211_queue_work()
983 * again even though some other parts of the stack are still suspended
984 * and we still drop received frames to avoid waking the stack.
985 */
986 bool resuming;
987
988 /*
989 * quiescing is true during the suspend process _only_ to
990 * ease timer cancelling etc.
991 */
992 bool quiescing;
993
994 /* device is started */
995 bool started;
996
997 /* device is during a HW reconfig */
998 bool in_reconfig;
999
1000 /* wowlan is enabled -- don't reconfig on resume */
1001 bool wowlan;
1002
1003 /* DFS/radar detection is enabled */
1004 bool radar_detect_enabled;
1005 struct work_struct radar_detected_work;
1006
1007 /* number of RX chains the hardware has */
1008 u8 rx_chains;
1009
1010 int tx_headroom; /* required headroom for hardware/radiotap */
1011
1012 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1013 * added to skb_queue will be processed, but frames in
1014 * skb_queue_unreliable may be dropped if the total length of these
1015 * queues increases over the limit. */
1016 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1017 struct tasklet_struct tasklet;
1018 struct sk_buff_head skb_queue;
1019 struct sk_buff_head skb_queue_unreliable;
1020
1021 spinlock_t rx_path_lock;
1022
1023 /* Station data */
1024 /*
1025 * The mutex only protects the list, hash table and
1026 * counter, reads are done with RCU.
1027 */
1028 struct mutex sta_mtx;
1029 spinlock_t tim_lock;
1030 unsigned long num_sta;
1031 struct list_head sta_list;
1032 struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
1033 struct timer_list sta_cleanup;
1034 int sta_generation;
1035
1036 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1037 struct tasklet_struct tx_pending_tasklet;
1038
1039 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1040
1041 /* number of interfaces with corresponding IFF_ flags */
1042 atomic_t iff_allmultis, iff_promiscs;
1043
1044 struct rate_control_ref *rate_ctrl;
1045
1046 struct crypto_cipher *wep_tx_tfm;
1047 struct crypto_cipher *wep_rx_tfm;
1048 u32 wep_iv;
1049
1050 /* see iface.c */
1051 struct list_head interfaces;
1052 struct mutex iflist_mtx;
1053
1054 /*
1055 * Key mutex, protects sdata's key_list and sta_info's
1056 * key pointers (write access, they're RCU.)
1057 */
1058 struct mutex key_mtx;
1059
1060 /* mutex for scan and work locking */
1061 struct mutex mtx;
1062
1063 /* Scanning and BSS list */
1064 unsigned long scanning;
1065 struct cfg80211_ssid scan_ssid;
1066 struct cfg80211_scan_request *int_scan_req;
1067 struct cfg80211_scan_request *scan_req, *hw_scan_req;
1068 struct cfg80211_chan_def scan_chandef;
1069 enum ieee80211_band hw_scan_band;
1070 int scan_channel_idx;
1071 int scan_ies_len;
1072 int hw_scan_ies_bufsize;
1073
1074 struct work_struct sched_scan_stopped_work;
1075 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1076
1077 unsigned long leave_oper_channel_time;
1078 enum mac80211_scan_state next_scan_state;
1079 struct delayed_work scan_work;
1080 struct ieee80211_sub_if_data __rcu *scan_sdata;
1081 struct cfg80211_chan_def csa_chandef;
1082 /* For backward compatibility only -- do not use */
1083 struct cfg80211_chan_def _oper_chandef;
1084
1085 /* Temporary remain-on-channel for off-channel operations */
1086 struct ieee80211_channel *tmp_channel;
1087
1088 /* channel contexts */
1089 struct list_head chanctx_list;
1090 struct mutex chanctx_mtx;
1091
1092 /* SNMP counters */
1093 /* dot11CountersTable */
1094 u32 dot11TransmittedFragmentCount;
1095 u32 dot11MulticastTransmittedFrameCount;
1096 u32 dot11FailedCount;
1097 u32 dot11RetryCount;
1098 u32 dot11MultipleRetryCount;
1099 u32 dot11FrameDuplicateCount;
1100 u32 dot11ReceivedFragmentCount;
1101 u32 dot11MulticastReceivedFrameCount;
1102 u32 dot11TransmittedFrameCount;
1103
1104 #ifdef CONFIG_MAC80211_LEDS
1105 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1106 struct tpt_led_trigger *tpt_led_trigger;
1107 char tx_led_name[32], rx_led_name[32],
1108 assoc_led_name[32], radio_led_name[32];
1109 #endif
1110
1111 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1112 /* TX/RX handler statistics */
1113 unsigned int tx_handlers_drop;
1114 unsigned int tx_handlers_queued;
1115 unsigned int tx_handlers_drop_unencrypted;
1116 unsigned int tx_handlers_drop_fragment;
1117 unsigned int tx_handlers_drop_wep;
1118 unsigned int tx_handlers_drop_not_assoc;
1119 unsigned int tx_handlers_drop_unauth_port;
1120 unsigned int rx_handlers_drop;
1121 unsigned int rx_handlers_queued;
1122 unsigned int rx_handlers_drop_nullfunc;
1123 unsigned int rx_handlers_drop_defrag;
1124 unsigned int rx_handlers_drop_short;
1125 unsigned int tx_expand_skb_head;
1126 unsigned int tx_expand_skb_head_cloned;
1127 unsigned int rx_expand_skb_head;
1128 unsigned int rx_expand_skb_head2;
1129 unsigned int rx_handlers_fragments;
1130 unsigned int tx_status_drop;
1131 #define I802_DEBUG_INC(c) (c)++
1132 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1133 #define I802_DEBUG_INC(c) do { } while (0)
1134 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1135
1136
1137 int total_ps_buffered; /* total number of all buffered unicast and
1138 * multicast packets for power saving stations
1139 */
1140
1141 bool pspolling;
1142 bool offchannel_ps_enabled;
1143 /*
1144 * PS can only be enabled when we have exactly one managed
1145 * interface (and monitors) in PS, this then points there.
1146 */
1147 struct ieee80211_sub_if_data *ps_sdata;
1148 struct work_struct dynamic_ps_enable_work;
1149 struct work_struct dynamic_ps_disable_work;
1150 struct timer_list dynamic_ps_timer;
1151 struct notifier_block network_latency_notifier;
1152 struct notifier_block ifa_notifier;
1153 struct notifier_block ifa6_notifier;
1154
1155 /*
1156 * The dynamic ps timeout configured from user space via WEXT -
1157 * this will override whatever chosen by mac80211 internally.
1158 */
1159 int dynamic_ps_forced_timeout;
1160
1161 int user_power_level; /* in dBm, for all interfaces */
1162
1163 enum ieee80211_smps_mode smps_mode;
1164
1165 struct work_struct restart_work;
1166
1167 #ifdef CONFIG_MAC80211_DEBUGFS
1168 struct local_debugfsdentries {
1169 struct dentry *rcdir;
1170 struct dentry *keys;
1171 } debugfs;
1172 #endif
1173
1174 /*
1175 * Remain-on-channel support
1176 */
1177 struct list_head roc_list;
1178 struct work_struct hw_roc_start, hw_roc_done;
1179 unsigned long hw_roc_start_time;
1180 u64 roc_cookie_counter;
1181
1182 struct idr ack_status_frames;
1183 spinlock_t ack_status_lock;
1184
1185 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1186
1187 /* virtual monitor interface */
1188 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1189 struct cfg80211_chan_def monitor_chandef;
1190 };
1191
1192 static inline struct ieee80211_sub_if_data *
1193 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1194 {
1195 return netdev_priv(dev);
1196 }
1197
1198 static inline struct ieee80211_sub_if_data *
1199 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1200 {
1201 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1202 }
1203
1204 /* this struct represents 802.11n's RA/TID combination */
1205 struct ieee80211_ra_tid {
1206 u8 ra[ETH_ALEN];
1207 u16 tid;
1208 };
1209
1210 /* Parsed Information Elements */
1211 struct ieee802_11_elems {
1212 const u8 *ie_start;
1213 size_t total_len;
1214
1215 /* pointers to IEs */
1216 const u8 *ssid;
1217 const u8 *supp_rates;
1218 const u8 *ds_params;
1219 const struct ieee80211_tim_ie *tim;
1220 const u8 *challenge;
1221 const u8 *rsn;
1222 const u8 *erp_info;
1223 const u8 *ext_supp_rates;
1224 const u8 *wmm_info;
1225 const u8 *wmm_param;
1226 const struct ieee80211_ht_cap *ht_cap_elem;
1227 const struct ieee80211_ht_operation *ht_operation;
1228 const struct ieee80211_vht_cap *vht_cap_elem;
1229 const struct ieee80211_vht_operation *vht_operation;
1230 const struct ieee80211_meshconf_ie *mesh_config;
1231 const u8 *mesh_id;
1232 const u8 *peering;
1233 const __le16 *awake_window;
1234 const u8 *preq;
1235 const u8 *prep;
1236 const u8 *perr;
1237 const struct ieee80211_rann_ie *rann;
1238 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1239 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1240 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1241 const u8 *country_elem;
1242 const u8 *pwr_constr_elem;
1243 const struct ieee80211_timeout_interval_ie *timeout_int;
1244 const u8 *opmode_notif;
1245 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1246
1247 /* length of them, respectively */
1248 u8 ssid_len;
1249 u8 supp_rates_len;
1250 u8 tim_len;
1251 u8 challenge_len;
1252 u8 rsn_len;
1253 u8 ext_supp_rates_len;
1254 u8 wmm_info_len;
1255 u8 wmm_param_len;
1256 u8 mesh_id_len;
1257 u8 peering_len;
1258 u8 preq_len;
1259 u8 prep_len;
1260 u8 perr_len;
1261 u8 country_elem_len;
1262
1263 /* whether a parse error occurred while retrieving these elements */
1264 bool parse_error;
1265 };
1266
1267 static inline struct ieee80211_local *hw_to_local(
1268 struct ieee80211_hw *hw)
1269 {
1270 return container_of(hw, struct ieee80211_local, hw);
1271 }
1272
1273
1274 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1275 {
1276 return ether_addr_equal(raddr, addr) ||
1277 is_broadcast_ether_addr(raddr);
1278 }
1279
1280 static inline bool
1281 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1282 {
1283 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1284 status->flag & RX_FLAG_MACTIME_END);
1285 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1286 }
1287
1288 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1289 struct ieee80211_rx_status *status,
1290 unsigned int mpdu_len,
1291 unsigned int mpdu_offset);
1292 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1293 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1294 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1295 u32 changed);
1296 void ieee80211_configure_filter(struct ieee80211_local *local);
1297 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1298
1299 /* STA code */
1300 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1301 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1302 struct cfg80211_auth_request *req);
1303 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1304 struct cfg80211_assoc_request *req);
1305 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1306 struct cfg80211_deauth_request *req);
1307 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1308 struct cfg80211_disassoc_request *req);
1309 void ieee80211_send_pspoll(struct ieee80211_local *local,
1310 struct ieee80211_sub_if_data *sdata);
1311 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1312 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1313 int ieee80211_max_network_latency(struct notifier_block *nb,
1314 unsigned long data, void *dummy);
1315 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1316 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1317 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1318 struct sk_buff *skb);
1319 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1320 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1321 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1322 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1323 __le16 fc, bool acked);
1324 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1325 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1326
1327 /* IBSS code */
1328 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1329 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1330 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1331 const u8 *bssid, const u8 *addr, u32 supp_rates);
1332 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1333 struct cfg80211_ibss_params *params);
1334 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1335 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1336 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1337 struct sk_buff *skb);
1338
1339 /* mesh code */
1340 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1341 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1342 struct sk_buff *skb);
1343
1344 /* scan/BSS handling */
1345 void ieee80211_scan_work(struct work_struct *work);
1346 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1347 const u8 *ssid, u8 ssid_len,
1348 struct ieee80211_channel *chan,
1349 enum nl80211_bss_scan_width scan_width);
1350 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1351 struct cfg80211_scan_request *req);
1352 void ieee80211_scan_cancel(struct ieee80211_local *local);
1353 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1354 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1355
1356 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1357 struct ieee80211_bss *
1358 ieee80211_bss_info_update(struct ieee80211_local *local,
1359 struct ieee80211_rx_status *rx_status,
1360 struct ieee80211_mgmt *mgmt,
1361 size_t len,
1362 struct ieee802_11_elems *elems,
1363 struct ieee80211_channel *channel);
1364 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1365 struct ieee80211_bss *bss);
1366
1367 /* scheduled scan handling */
1368 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1369 struct cfg80211_sched_scan_request *req);
1370 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1371 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1372
1373 /* off-channel helpers */
1374 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1375 void ieee80211_offchannel_return(struct ieee80211_local *local);
1376 void ieee80211_roc_setup(struct ieee80211_local *local);
1377 void ieee80211_start_next_roc(struct ieee80211_local *local);
1378 void ieee80211_roc_purge(struct ieee80211_local *local,
1379 struct ieee80211_sub_if_data *sdata);
1380 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1381 void ieee80211_sw_roc_work(struct work_struct *work);
1382 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1383
1384 /* channel switch handling */
1385 void ieee80211_csa_finalize_work(struct work_struct *work);
1386
1387 /* interface handling */
1388 int ieee80211_iface_init(void);
1389 void ieee80211_iface_exit(void);
1390 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1391 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1392 struct vif_params *params);
1393 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1394 enum nl80211_iftype type);
1395 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1396 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1397 u32 ieee80211_idle_off(struct ieee80211_local *local);
1398 void ieee80211_recalc_idle(struct ieee80211_local *local);
1399 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1400 const int offset);
1401 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1402 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1403 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1404 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1405
1406 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1407 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1408 int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
1409 struct cfg80211_beacon_data *params);
1410
1411 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1412 {
1413 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1414 }
1415
1416 /* tx handling */
1417 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1418 void ieee80211_tx_pending(unsigned long data);
1419 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1420 struct net_device *dev);
1421 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1422 struct net_device *dev);
1423 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1424 struct sk_buff_head *skbs);
1425
1426 /* HT */
1427 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1428 struct ieee80211_sta_ht_cap *ht_cap);
1429 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1430 struct ieee80211_supported_band *sband,
1431 const struct ieee80211_ht_cap *ht_cap_ie,
1432 struct sta_info *sta);
1433 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1434 const u8 *da, u16 tid,
1435 u16 initiator, u16 reason_code);
1436 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1437 enum ieee80211_smps_mode smps, const u8 *da,
1438 const u8 *bssid);
1439 void ieee80211_request_smps_work(struct work_struct *work);
1440
1441 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1442 u16 initiator, u16 reason, bool stop);
1443 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1444 u16 initiator, u16 reason, bool stop);
1445 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1446 enum ieee80211_agg_stop_reason reason);
1447 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1448 struct sta_info *sta,
1449 struct ieee80211_mgmt *mgmt, size_t len);
1450 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1451 struct sta_info *sta,
1452 struct ieee80211_mgmt *mgmt,
1453 size_t len);
1454 void ieee80211_process_addba_request(struct ieee80211_local *local,
1455 struct sta_info *sta,
1456 struct ieee80211_mgmt *mgmt,
1457 size_t len);
1458
1459 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1460 enum ieee80211_agg_stop_reason reason);
1461 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1462 enum ieee80211_agg_stop_reason reason);
1463 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1464 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1465 void ieee80211_ba_session_work(struct work_struct *work);
1466 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1467 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1468
1469 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1470
1471 /* VHT */
1472 void
1473 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1474 struct ieee80211_supported_band *sband,
1475 const struct ieee80211_vht_cap *vht_cap_ie,
1476 struct sta_info *sta);
1477 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1478 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1479 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1480 struct sta_info *sta, u8 opmode,
1481 enum ieee80211_band band, bool nss_only);
1482 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1483 struct ieee80211_sta_vht_cap *vht_cap);
1484
1485 /* Spectrum management */
1486 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1487 struct ieee80211_mgmt *mgmt,
1488 size_t len);
1489
1490 /* Suspend/resume and hw reconfiguration */
1491 int ieee80211_reconfig(struct ieee80211_local *local);
1492 void ieee80211_stop_device(struct ieee80211_local *local);
1493
1494 int __ieee80211_suspend(struct ieee80211_hw *hw,
1495 struct cfg80211_wowlan *wowlan);
1496
1497 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1498 {
1499 struct ieee80211_local *local = hw_to_local(hw);
1500
1501 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1502 "%s: resume with hardware scan still in progress\n",
1503 wiphy_name(hw->wiphy));
1504
1505 return ieee80211_reconfig(hw_to_local(hw));
1506 }
1507
1508 /* utility functions/constants */
1509 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1510 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1511 enum nl80211_iftype type);
1512 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1513 int rate, int erp, int short_preamble,
1514 int shift);
1515 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1516 struct ieee80211_hdr *hdr, const u8 *tsc,
1517 gfp_t gfp);
1518 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1519 bool bss_notify);
1520 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1521 enum ieee80211_band band);
1522
1523 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1524 struct sk_buff *skb, int tid,
1525 enum ieee80211_band band);
1526
1527 static inline void
1528 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1529 struct sk_buff *skb, int tid,
1530 enum ieee80211_band band)
1531 {
1532 rcu_read_lock();
1533 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1534 rcu_read_unlock();
1535 }
1536
1537 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1538 struct sk_buff *skb, int tid)
1539 {
1540 struct ieee80211_chanctx_conf *chanctx_conf;
1541
1542 rcu_read_lock();
1543 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1544 if (WARN_ON(!chanctx_conf)) {
1545 rcu_read_unlock();
1546 kfree_skb(skb);
1547 return;
1548 }
1549
1550 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1551 chanctx_conf->def.chan->band);
1552 rcu_read_unlock();
1553 }
1554
1555 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1556 struct sk_buff *skb)
1557 {
1558 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1559 ieee80211_tx_skb_tid(sdata, skb, 7);
1560 }
1561
1562 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1563 struct ieee802_11_elems *elems,
1564 u64 filter, u32 crc);
1565 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1566 bool action,
1567 struct ieee802_11_elems *elems)
1568 {
1569 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1570 }
1571
1572 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1573 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1574 void ieee80211_dynamic_ps_timer(unsigned long data);
1575 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1576 struct ieee80211_sub_if_data *sdata,
1577 int powersave);
1578 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1579 struct ieee80211_hdr *hdr);
1580 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1581 struct ieee80211_hdr *hdr, bool ack);
1582
1583 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1584 unsigned long queues,
1585 enum queue_stop_reason reason);
1586 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1587 unsigned long queues,
1588 enum queue_stop_reason reason);
1589 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1590 enum queue_stop_reason reason);
1591 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1592 enum queue_stop_reason reason);
1593 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1594 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1595 struct sk_buff *skb);
1596 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1597 struct sk_buff_head *skbs,
1598 void (*fn)(void *data), void *data);
1599 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1600 struct sk_buff_head *skbs)
1601 {
1602 ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL);
1603 }
1604 void ieee80211_flush_queues(struct ieee80211_local *local,
1605 struct ieee80211_sub_if_data *sdata);
1606
1607 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1608 u16 transaction, u16 auth_alg, u16 status,
1609 const u8 *extra, size_t extra_len, const u8 *bssid,
1610 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1611 u32 tx_flags);
1612 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1613 const u8 *bssid, u16 stype, u16 reason,
1614 bool send_frame, u8 *frame_buf);
1615 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1616 size_t buffer_len, const u8 *ie, size_t ie_len,
1617 enum ieee80211_band band, u32 rate_mask,
1618 struct cfg80211_chan_def *chandef);
1619 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1620 u8 *dst, u32 ratemask,
1621 struct ieee80211_channel *chan,
1622 const u8 *ssid, size_t ssid_len,
1623 const u8 *ie, size_t ie_len,
1624 bool directed);
1625 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1626 const u8 *ssid, size_t ssid_len,
1627 const u8 *ie, size_t ie_len,
1628 u32 ratemask, bool directed, u32 tx_flags,
1629 struct ieee80211_channel *channel, bool scan);
1630
1631 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1632 struct ieee802_11_elems *elems,
1633 enum ieee80211_band band, u32 *basic_rates);
1634 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1635 enum ieee80211_smps_mode smps_mode);
1636 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1637
1638 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1639 const u8 *ids, int n_ids, size_t offset);
1640 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1641 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1642 u16 cap);
1643 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1644 const struct cfg80211_chan_def *chandef,
1645 u16 prot_mode);
1646 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1647 u32 cap);
1648 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1649 const struct ieee80211_supported_band *sband,
1650 const u8 *srates, int srates_len, u32 *rates);
1651 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1652 struct sk_buff *skb, bool need_basic,
1653 enum ieee80211_band band);
1654 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1655 struct sk_buff *skb, bool need_basic,
1656 enum ieee80211_band band);
1657
1658 /* channel management */
1659 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1660 const struct ieee80211_ht_operation *ht_oper,
1661 struct cfg80211_chan_def *chandef);
1662
1663 int __must_check
1664 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1665 const struct cfg80211_chan_def *chandef,
1666 enum ieee80211_chanctx_mode mode);
1667 int __must_check
1668 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
1669 const struct cfg80211_chan_def *chandef,
1670 u32 *changed);
1671 /* NOTE: only use ieee80211_vif_change_channel() for channel switch */
1672 int __must_check
1673 ieee80211_vif_change_channel(struct ieee80211_sub_if_data *sdata,
1674 const struct cfg80211_chan_def *chandef,
1675 u32 *changed);
1676 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
1677 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
1678 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
1679 bool clear);
1680
1681 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
1682 struct ieee80211_chanctx *chanctx);
1683 void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local,
1684 struct ieee80211_chanctx *chanctx);
1685
1686 void ieee80211_dfs_cac_timer(unsigned long data);
1687 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
1688 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
1689 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
1690
1691 #ifdef CONFIG_MAC80211_NOINLINE
1692 #define debug_noinline noinline
1693 #else
1694 #define debug_noinline
1695 #endif
1696
1697 #endif /* IEEE80211_I_H */
Linux with added FPC-III support