1/*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4 Copyright 2023-2024 NXP
5
6 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
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 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20
21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
23 SOFTWARE IS DISCLAIMED.
24*/
25
26#ifndef __HCI_CORE_H
27#define __HCI_CORE_H
28
29#include <linux/idr.h>
30#include <linux/leds.h>
31#include <linux/rculist.h>
32
33#include <net/bluetooth/hci.h>
34#include <net/bluetooth/hci_drv.h>
35#include <net/bluetooth/hci_sync.h>
36#include <net/bluetooth/hci_sock.h>
37#include <net/bluetooth/coredump.h>
38
39/* HCI priority */
40#define HCI_PRIO_MAX 7
41
42/* HCI maximum id value */
43#define HCI_MAX_ID 10000
44
45/* HCI Core structures */
46struct inquiry_data {
47 bdaddr_t bdaddr;
48 __u8 pscan_rep_mode;
49 __u8 pscan_period_mode;
50 __u8 pscan_mode;
51 __u8 dev_class[3];
52 __le16 clock_offset;
53 __s8 rssi;
54 __u8 ssp_mode;
55};
56
57struct inquiry_entry {
58 struct list_head all; /* inq_cache.all */
59 struct list_head list; /* unknown or resolve */
60 enum {
61 NAME_NOT_KNOWN,
62 NAME_NEEDED,
63 NAME_PENDING,
64 NAME_KNOWN,
65 } name_state;
66 __u32 timestamp;
67 struct inquiry_data data;
68};
69
70struct discovery_state {
71 int type;
72 enum {
73 DISCOVERY_STOPPED,
74 DISCOVERY_STARTING,
75 DISCOVERY_FINDING,
76 DISCOVERY_RESOLVING,
77 DISCOVERY_STOPPING,
78 } state;
79 struct list_head all; /* All devices found during inquiry */
80 struct list_head unknown; /* Name state not known */
81 struct list_head resolve; /* Name needs to be resolved */
82 __u32 timestamp;
83 bdaddr_t last_adv_addr;
84 u8 last_adv_addr_type;
85 s8 last_adv_rssi;
86 u32 last_adv_flags;
87 u8 last_adv_data[HCI_MAX_EXT_AD_LENGTH];
88 u8 last_adv_data_len;
89 bool report_invalid_rssi;
90 bool result_filtering;
91 bool limited;
92 s8 rssi;
93 u16 uuid_count;
94 u8 (*uuids)[16];
95 unsigned long name_resolve_timeout;
96};
97
98#define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
99
100enum suspend_tasks {
101 SUSPEND_PAUSE_DISCOVERY,
102 SUSPEND_UNPAUSE_DISCOVERY,
103
104 SUSPEND_PAUSE_ADVERTISING,
105 SUSPEND_UNPAUSE_ADVERTISING,
106
107 SUSPEND_SCAN_DISABLE,
108 SUSPEND_SCAN_ENABLE,
109 SUSPEND_DISCONNECTING,
110
111 SUSPEND_POWERING_DOWN,
112
113 SUSPEND_PREPARE_NOTIFIER,
114
115 SUSPEND_SET_ADV_FILTER,
116 __SUSPEND_NUM_TASKS
117};
118
119enum suspended_state {
120 BT_RUNNING = 0,
121 BT_SUSPEND_DISCONNECT,
122 BT_SUSPEND_CONFIGURE_WAKE,
123};
124
125struct hci_conn_hash {
126 struct list_head list;
127 unsigned int acl_num;
128 unsigned int sco_num;
129 unsigned int iso_num;
130 unsigned int le_num;
131 unsigned int le_num_peripheral;
132};
133
134struct bdaddr_list {
135 struct list_head list;
136 bdaddr_t bdaddr;
137 u8 bdaddr_type;
138};
139
140struct codec_list {
141 struct list_head list;
142 u8 id;
143 __u16 cid;
144 __u16 vid;
145 u8 transport;
146 u8 num_caps;
147 u32 len;
148 struct hci_codec_caps caps[];
149};
150
151struct bdaddr_list_with_irk {
152 struct list_head list;
153 bdaddr_t bdaddr;
154 u8 bdaddr_type;
155 u8 peer_irk[16];
156 u8 local_irk[16];
157};
158
159/* Bitmask of connection flags */
160enum hci_conn_flags {
161 HCI_CONN_FLAG_REMOTE_WAKEUP = BIT(0),
162 HCI_CONN_FLAG_DEVICE_PRIVACY = BIT(1),
163 HCI_CONN_FLAG_ADDRESS_RESOLUTION = BIT(2),
164};
165typedef u8 hci_conn_flags_t;
166
167struct bdaddr_list_with_flags {
168 struct list_head list;
169 bdaddr_t bdaddr;
170 u8 bdaddr_type;
171 hci_conn_flags_t flags;
172};
173
174struct bt_uuid {
175 struct list_head list;
176 u8 uuid[16];
177 u8 size;
178 u8 svc_hint;
179};
180
181struct blocked_key {
182 struct list_head list;
183 struct rcu_head rcu;
184 u8 type;
185 u8 val[16];
186};
187
188struct smp_csrk {
189 bdaddr_t bdaddr;
190 u8 bdaddr_type;
191 u8 type;
192 u8 val[16];
193};
194
195struct smp_ltk {
196 struct list_head list;
197 struct rcu_head rcu;
198 bdaddr_t bdaddr;
199 u8 bdaddr_type;
200 u8 authenticated;
201 u8 type;
202 u8 enc_size;
203 __le16 ediv;
204 __le64 rand;
205 u8 val[16];
206};
207
208struct smp_irk {
209 struct list_head list;
210 struct rcu_head rcu;
211 bdaddr_t rpa;
212 bdaddr_t bdaddr;
213 u8 addr_type;
214 u8 val[16];
215};
216
217struct link_key {
218 struct list_head list;
219 struct rcu_head rcu;
220 bdaddr_t bdaddr;
221 u8 type;
222 u8 val[HCI_LINK_KEY_SIZE];
223 u8 pin_len;
224};
225
226struct oob_data {
227 struct list_head list;
228 bdaddr_t bdaddr;
229 u8 bdaddr_type;
230 u8 present;
231 u8 hash192[16];
232 u8 rand192[16];
233 u8 hash256[16];
234 u8 rand256[16];
235};
236
237struct adv_info {
238 struct list_head list;
239 bool enabled;
240 bool pending;
241 bool periodic;
242 __u8 mesh;
243 __u8 instance;
244 __u8 handle;
245 __u32 flags;
246 __u16 timeout;
247 __u16 remaining_time;
248 __u16 duration;
249 __u16 adv_data_len;
250 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
251 bool adv_data_changed;
252 __u16 scan_rsp_len;
253 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
254 bool scan_rsp_changed;
255 __u16 per_adv_data_len;
256 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
257 __s8 tx_power;
258 __u32 min_interval;
259 __u32 max_interval;
260 bdaddr_t random_addr;
261 bool rpa_expired;
262 struct delayed_work rpa_expired_cb;
263};
264
265struct tx_queue {
266 struct sk_buff_head queue;
267 unsigned int extra;
268 unsigned int tracked;
269};
270
271#define HCI_MAX_ADV_INSTANCES 5
272#define HCI_DEFAULT_ADV_DURATION 2
273
274#define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F
275
276#define DATA_CMP(_d1, _l1, _d2, _l2) \
277 (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2)
278
279#define ADV_DATA_CMP(_adv, _data, _len) \
280 DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len)
281
282#define SCAN_RSP_CMP(_adv, _data, _len) \
283 DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len)
284
285struct monitored_device {
286 struct list_head list;
287
288 bdaddr_t bdaddr;
289 __u8 addr_type;
290 __u16 handle;
291 bool notified;
292};
293
294struct adv_pattern {
295 struct list_head list;
296 __u8 ad_type;
297 __u8 offset;
298 __u8 length;
299 __u8 value[HCI_MAX_EXT_AD_LENGTH];
300};
301
302struct adv_rssi_thresholds {
303 __s8 low_threshold;
304 __s8 high_threshold;
305 __u16 low_threshold_timeout;
306 __u16 high_threshold_timeout;
307 __u8 sampling_period;
308};
309
310struct adv_monitor {
311 struct list_head patterns;
312 struct adv_rssi_thresholds rssi;
313 __u16 handle;
314
315 enum {
316 ADV_MONITOR_STATE_NOT_REGISTERED,
317 ADV_MONITOR_STATE_REGISTERED,
318 ADV_MONITOR_STATE_OFFLOADED
319 } state;
320};
321
322#define HCI_MIN_ADV_MONITOR_HANDLE 1
323#define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32
324#define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16
325#define HCI_ADV_MONITOR_EXT_NONE 1
326#define HCI_ADV_MONITOR_EXT_MSFT 2
327
328#define HCI_MAX_SHORT_NAME_LENGTH 10
329
330#define HCI_CONN_HANDLE_MAX 0x0eff
331#define HCI_CONN_HANDLE_UNSET(_handle) (_handle > HCI_CONN_HANDLE_MAX)
332
333/* Min encryption key size to match with SMP */
334#define HCI_MIN_ENC_KEY_SIZE 7
335
336/* Default LE RPA expiry time, 15 minutes */
337#define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
338
339/* Default min/max age of connection information (1s/3s) */
340#define DEFAULT_CONN_INFO_MIN_AGE 1000
341#define DEFAULT_CONN_INFO_MAX_AGE 3000
342/* Default authenticated payload timeout 30s */
343#define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8
344
345#define HCI_MAX_PAGES 3
346
347struct hci_dev {
348 struct list_head list;
349 struct mutex lock;
350
351 struct ida unset_handle_ida;
352
353 const char *name;
354 unsigned long flags;
355 __u16 id;
356 __u8 bus;
357 bdaddr_t bdaddr;
358 bdaddr_t setup_addr;
359 bdaddr_t public_addr;
360 bdaddr_t random_addr;
361 bdaddr_t static_addr;
362 __u8 adv_addr_type;
363 __u8 dev_name[HCI_MAX_NAME_LENGTH];
364 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
365 __u8 eir[HCI_MAX_EIR_LENGTH];
366 __u16 appearance;
367 __u8 dev_class[3];
368 __u8 major_class;
369 __u8 minor_class;
370 __u8 max_page;
371 __u8 features[HCI_MAX_PAGES][8];
372 __u8 le_features[8];
373 __u8 le_accept_list_size;
374 __u8 le_resolv_list_size;
375 __u8 le_num_of_adv_sets;
376 __u8 le_states[8];
377 __u8 mesh_ad_types[16];
378 __u8 mesh_send_ref;
379 __u8 commands[64];
380 __u8 hci_ver;
381 __u16 hci_rev;
382 __u8 lmp_ver;
383 __u16 manufacturer;
384 __u16 lmp_subver;
385 __u16 voice_setting;
386 __u8 num_iac;
387 __u16 stored_max_keys;
388 __u16 stored_num_keys;
389 __u8 io_capability;
390 __s8 inq_tx_power;
391 __u8 err_data_reporting;
392 __u16 page_scan_interval;
393 __u16 page_scan_window;
394 __u8 page_scan_type;
395 __u8 le_adv_channel_map;
396 __u16 le_adv_min_interval;
397 __u16 le_adv_max_interval;
398 __u8 le_scan_type;
399 __u16 le_scan_interval;
400 __u16 le_scan_window;
401 __u16 le_scan_int_suspend;
402 __u16 le_scan_window_suspend;
403 __u16 le_scan_int_discovery;
404 __u16 le_scan_window_discovery;
405 __u16 le_scan_int_adv_monitor;
406 __u16 le_scan_window_adv_monitor;
407 __u16 le_scan_int_connect;
408 __u16 le_scan_window_connect;
409 __u16 le_conn_min_interval;
410 __u16 le_conn_max_interval;
411 __u16 le_conn_latency;
412 __u16 le_supv_timeout;
413 __u16 le_def_tx_len;
414 __u16 le_def_tx_time;
415 __u16 le_max_tx_len;
416 __u16 le_max_tx_time;
417 __u16 le_max_rx_len;
418 __u16 le_max_rx_time;
419 __u8 le_max_key_size;
420 __u8 le_min_key_size;
421 __u16 discov_interleaved_timeout;
422 __u16 conn_info_min_age;
423 __u16 conn_info_max_age;
424 __u16 auth_payload_timeout;
425 __u8 min_enc_key_size;
426 __u8 max_enc_key_size;
427 __u8 pairing_opts;
428 __u8 ssp_debug_mode;
429 __u8 hw_error_code;
430 __u32 clock;
431 __u16 advmon_allowlist_duration;
432 __u16 advmon_no_filter_duration;
433 __u8 enable_advmon_interleave_scan;
434
435 __u16 devid_source;
436 __u16 devid_vendor;
437 __u16 devid_product;
438 __u16 devid_version;
439
440 __u8 def_page_scan_type;
441 __u16 def_page_scan_int;
442 __u16 def_page_scan_window;
443 __u8 def_inq_scan_type;
444 __u16 def_inq_scan_int;
445 __u16 def_inq_scan_window;
446 __u16 def_br_lsto;
447 __u16 def_page_timeout;
448 __u16 def_multi_adv_rotation_duration;
449 __u16 def_le_autoconnect_timeout;
450 __s8 min_le_tx_power;
451 __s8 max_le_tx_power;
452
453 __u16 pkt_type;
454 __u16 esco_type;
455 __u16 link_policy;
456 __u16 link_mode;
457
458 __u32 idle_timeout;
459 __u16 sniff_min_interval;
460 __u16 sniff_max_interval;
461
462 unsigned int auto_accept_delay;
463
464 unsigned long quirks;
465
466 atomic_t cmd_cnt;
467 unsigned int acl_cnt;
468 unsigned int sco_cnt;
469 unsigned int le_cnt;
470 unsigned int iso_cnt;
471
472 unsigned int acl_mtu;
473 unsigned int sco_mtu;
474 unsigned int le_mtu;
475 unsigned int iso_mtu;
476 unsigned int acl_pkts;
477 unsigned int sco_pkts;
478 unsigned int le_pkts;
479 unsigned int iso_pkts;
480
481 unsigned long acl_last_tx;
482 unsigned long le_last_tx;
483
484 __u8 le_tx_def_phys;
485 __u8 le_rx_def_phys;
486
487 struct workqueue_struct *workqueue;
488 struct workqueue_struct *req_workqueue;
489
490 struct work_struct power_on;
491 struct delayed_work power_off;
492 struct work_struct error_reset;
493 struct work_struct cmd_sync_work;
494 struct list_head cmd_sync_work_list;
495 struct mutex cmd_sync_work_lock;
496 struct mutex unregister_lock;
497 struct work_struct cmd_sync_cancel_work;
498 struct work_struct reenable_adv_work;
499
500 __u16 discov_timeout;
501 struct delayed_work discov_off;
502
503 struct delayed_work service_cache;
504
505 struct delayed_work cmd_timer;
506 struct delayed_work ncmd_timer;
507
508 struct work_struct rx_work;
509 struct work_struct cmd_work;
510 struct work_struct tx_work;
511
512 struct delayed_work le_scan_disable;
513
514 struct sk_buff_head rx_q;
515 struct sk_buff_head raw_q;
516 struct sk_buff_head cmd_q;
517
518 struct sk_buff *sent_cmd;
519 struct sk_buff *recv_event;
520
521 struct mutex req_lock;
522 wait_queue_head_t req_wait_q;
523 __u32 req_status;
524 __u32 req_result;
525 struct sk_buff *req_skb;
526 struct sk_buff *req_rsp;
527
528 void *smp_data;
529 void *smp_bredr_data;
530
531 struct discovery_state discovery;
532
533 bool discovery_paused;
534 int advertising_old_state;
535 bool advertising_paused;
536
537 struct notifier_block suspend_notifier;
538 enum suspended_state suspend_state_next;
539 enum suspended_state suspend_state;
540 bool scanning_paused;
541 bool suspended;
542 u8 wake_reason;
543 bdaddr_t wake_addr;
544 u8 wake_addr_type;
545
546 struct hci_conn_hash conn_hash;
547
548 struct list_head mesh_pending;
549 struct list_head mgmt_pending;
550 struct list_head reject_list;
551 struct list_head accept_list;
552 struct list_head uuids;
553 struct list_head link_keys;
554 struct list_head long_term_keys;
555 struct list_head identity_resolving_keys;
556 struct list_head remote_oob_data;
557 struct list_head le_accept_list;
558 struct list_head le_resolv_list;
559 struct list_head le_conn_params;
560 struct list_head pend_le_conns;
561 struct list_head pend_le_reports;
562 struct list_head blocked_keys;
563 struct list_head local_codecs;
564
565 struct hci_dev_stats stat;
566
567 atomic_t promisc;
568
569 const char *hw_info;
570 const char *fw_info;
571 struct dentry *debugfs;
572
573 struct hci_devcoredump dump;
574
575 struct device dev;
576
577 struct rfkill *rfkill;
578
579 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
580 hci_conn_flags_t conn_flags;
581
582 __s8 adv_tx_power;
583 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
584 __u8 adv_data_len;
585 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
586 __u8 scan_rsp_data_len;
587 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
588 __u8 per_adv_data_len;
589
590 struct list_head adv_instances;
591 unsigned int adv_instance_cnt;
592 __u8 cur_adv_instance;
593 __u16 adv_instance_timeout;
594 struct delayed_work adv_instance_expire;
595
596 struct idr adv_monitors_idr;
597 unsigned int adv_monitors_cnt;
598
599 __u8 irk[16];
600 __u32 rpa_timeout;
601 struct delayed_work rpa_expired;
602 bdaddr_t rpa;
603
604 struct delayed_work mesh_send_done;
605
606 enum {
607 INTERLEAVE_SCAN_NONE,
608 INTERLEAVE_SCAN_NO_FILTER,
609 INTERLEAVE_SCAN_ALLOWLIST
610 } interleave_scan_state;
611
612 struct delayed_work interleave_scan;
613
614 struct list_head monitored_devices;
615 bool advmon_pend_notify;
616
617 struct hci_drv *hci_drv;
618
619#if IS_ENABLED(CONFIG_BT_LEDS)
620 struct led_trigger *power_led;
621#endif
622
623#if IS_ENABLED(CONFIG_BT_MSFTEXT)
624 __u16 msft_opcode;
625 void *msft_data;
626 bool msft_curve_validity;
627#endif
628
629#if IS_ENABLED(CONFIG_BT_AOSPEXT)
630 bool aosp_capable;
631 bool aosp_quality_report;
632#endif
633
634 int (*open)(struct hci_dev *hdev);
635 int (*close)(struct hci_dev *hdev);
636 int (*flush)(struct hci_dev *hdev);
637 int (*setup)(struct hci_dev *hdev);
638 int (*shutdown)(struct hci_dev *hdev);
639 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
640 void (*notify)(struct hci_dev *hdev, unsigned int evt);
641 void (*hw_error)(struct hci_dev *hdev, u8 code);
642 int (*post_init)(struct hci_dev *hdev);
643 int (*set_diag)(struct hci_dev *hdev, bool enable);
644 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
645 void (*reset)(struct hci_dev *hdev);
646 bool (*wakeup)(struct hci_dev *hdev);
647 int (*set_quality_report)(struct hci_dev *hdev, bool enable);
648 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path);
649 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type,
650 struct bt_codec *codec, __u8 *vnd_len,
651 __u8 **vnd_data);
652 u8 (*classify_pkt_type)(struct hci_dev *hdev, struct sk_buff *skb);
653};
654
655#define HCI_PHY_HANDLE(handle) (handle & 0xff)
656
657enum conn_reasons {
658 CONN_REASON_PAIR_DEVICE,
659 CONN_REASON_L2CAP_CHAN,
660 CONN_REASON_SCO_CONNECT,
661 CONN_REASON_ISO_CONNECT,
662};
663
664struct hci_conn {
665 struct list_head list;
666
667 atomic_t refcnt;
668
669 bdaddr_t dst;
670 __u8 dst_type;
671 bdaddr_t src;
672 __u8 src_type;
673 bdaddr_t init_addr;
674 __u8 init_addr_type;
675 bdaddr_t resp_addr;
676 __u8 resp_addr_type;
677 __u8 adv_instance;
678 __u16 handle;
679 __u16 sync_handle;
680 __u8 sid;
681 __u16 state;
682 __u16 mtu;
683 __u8 mode;
684 __u8 type;
685 __u8 role;
686 bool out;
687 __u8 attempt;
688 __u8 dev_class[3];
689 __u8 features[HCI_MAX_PAGES][8];
690 __u16 pkt_type;
691 __u16 link_policy;
692 __u8 key_type;
693 __u8 auth_type;
694 __u8 sec_level;
695 __u8 pending_sec_level;
696 __u8 pin_length;
697 __u8 enc_key_size;
698 __u8 io_capability;
699 __u32 passkey_notify;
700 __u8 passkey_entered;
701 __u16 disc_timeout;
702 __u16 conn_timeout;
703 __u16 setting;
704 __u16 auth_payload_timeout;
705 __u16 le_conn_min_interval;
706 __u16 le_conn_max_interval;
707 __u16 le_conn_interval;
708 __u16 le_conn_latency;
709 __u16 le_supv_timeout;
710 __u8 le_adv_data[HCI_MAX_EXT_AD_LENGTH];
711 __u8 le_adv_data_len;
712 __u8 le_per_adv_data[HCI_MAX_PER_AD_TOT_LEN];
713 __u16 le_per_adv_data_len;
714 __u16 le_per_adv_data_offset;
715 __u8 le_adv_phy;
716 __u8 le_adv_sec_phy;
717 __u8 le_tx_phy;
718 __u8 le_rx_phy;
719 __s8 rssi;
720 __s8 tx_power;
721 __s8 max_tx_power;
722 struct bt_iso_qos iso_qos;
723 __u8 num_bis;
724 __u8 bis[HCI_MAX_ISO_BIS];
725
726 unsigned long flags;
727
728 enum conn_reasons conn_reason;
729 __u8 abort_reason;
730
731 __u32 clock;
732 __u16 clock_accuracy;
733
734 unsigned long conn_info_timestamp;
735
736 __u8 remote_cap;
737 __u8 remote_auth;
738 __u8 remote_id;
739
740 unsigned int sent;
741
742 struct sk_buff_head data_q;
743 struct list_head chan_list;
744
745 struct tx_queue tx_q;
746
747 struct delayed_work disc_work;
748 struct delayed_work auto_accept_work;
749 struct delayed_work idle_work;
750 struct delayed_work le_conn_timeout;
751
752 struct device dev;
753 struct dentry *debugfs;
754
755 struct hci_dev *hdev;
756 void *l2cap_data;
757 void *sco_data;
758 void *iso_data;
759
760 struct list_head link_list;
761 struct hci_conn *parent;
762 struct hci_link *link;
763
764 struct bt_codec codec;
765
766 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
767 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
768 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
769
770 void (*cleanup)(struct hci_conn *conn);
771};
772
773struct hci_link {
774 struct list_head list;
775 struct hci_conn *conn;
776};
777
778struct hci_chan {
779 struct list_head list;
780 __u16 handle;
781 struct hci_conn *conn;
782 struct sk_buff_head data_q;
783 unsigned int sent;
784 __u8 state;
785};
786
787struct hci_conn_params {
788 struct list_head list;
789 struct list_head action;
790
791 bdaddr_t addr;
792 u8 addr_type;
793
794 u16 conn_min_interval;
795 u16 conn_max_interval;
796 u16 conn_latency;
797 u16 supervision_timeout;
798
799 enum {
800 HCI_AUTO_CONN_DISABLED,
801 HCI_AUTO_CONN_REPORT,
802 HCI_AUTO_CONN_DIRECT,
803 HCI_AUTO_CONN_ALWAYS,
804 HCI_AUTO_CONN_LINK_LOSS,
805 HCI_AUTO_CONN_EXPLICIT,
806 } auto_connect;
807
808 struct hci_conn *conn;
809 bool explicit_connect;
810 /* Accessed without hdev->lock: */
811 hci_conn_flags_t flags;
812 u8 privacy_mode;
813};
814
815extern struct list_head hci_dev_list;
816extern struct list_head hci_cb_list;
817extern rwlock_t hci_dev_list_lock;
818extern struct mutex hci_cb_list_lock;
819
820#define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
821#define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
822#define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
823#define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
824#define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
825#define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
826#define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
827
828#define hci_dev_clear_volatile_flags(hdev) \
829 do { \
830 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
831 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
832 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
833 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
834 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \
835 } while (0)
836
837#define hci_dev_le_state_simultaneous(hdev) \
838 (!test_bit(HCI_QUIRK_BROKEN_LE_STATES, &hdev->quirks) && \
839 (hdev->le_states[4] & 0x08) && /* Central */ \
840 (hdev->le_states[4] & 0x40) && /* Peripheral */ \
841 (hdev->le_states[3] & 0x10)) /* Simultaneous */
842
843/* ----- HCI interface to upper protocols ----- */
844int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
845int l2cap_disconn_ind(struct hci_conn *hcon);
846void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
847
848#if IS_ENABLED(CONFIG_BT_BREDR)
849int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
850void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
851#else
852static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
853 __u8 *flags)
854{
855 return 0;
856}
857
858static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
859{
860}
861#endif
862
863#if IS_ENABLED(CONFIG_BT_LE)
864int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
865void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
866#else
867static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
868 __u8 *flags)
869{
870 return 0;
871}
872static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb,
873 u16 flags)
874{
875}
876#endif
877
878/* ----- Inquiry cache ----- */
879#define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
880#define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
881
882static inline void discovery_init(struct hci_dev *hdev)
883{
884 hdev->discovery.state = DISCOVERY_STOPPED;
885 INIT_LIST_HEAD(list: &hdev->discovery.all);
886 INIT_LIST_HEAD(list: &hdev->discovery.unknown);
887 INIT_LIST_HEAD(list: &hdev->discovery.resolve);
888 hdev->discovery.report_invalid_rssi = true;
889 hdev->discovery.rssi = HCI_RSSI_INVALID;
890}
891
892static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
893{
894 hdev->discovery.result_filtering = false;
895 hdev->discovery.report_invalid_rssi = true;
896 hdev->discovery.rssi = HCI_RSSI_INVALID;
897 hdev->discovery.uuid_count = 0;
898 kfree(objp: hdev->discovery.uuids);
899 hdev->discovery.uuids = NULL;
900}
901
902bool hci_discovery_active(struct hci_dev *hdev);
903
904void hci_discovery_set_state(struct hci_dev *hdev, int state);
905
906static inline int inquiry_cache_empty(struct hci_dev *hdev)
907{
908 return list_empty(head: &hdev->discovery.all);
909}
910
911static inline long inquiry_cache_age(struct hci_dev *hdev)
912{
913 struct discovery_state *c = &hdev->discovery;
914 return jiffies - c->timestamp;
915}
916
917static inline long inquiry_entry_age(struct inquiry_entry *e)
918{
919 return jiffies - e->timestamp;
920}
921
922struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
923 bdaddr_t *bdaddr);
924struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
925 bdaddr_t *bdaddr);
926struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
927 bdaddr_t *bdaddr,
928 int state);
929void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
930 struct inquiry_entry *ie);
931u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
932 bool name_known);
933void hci_inquiry_cache_flush(struct hci_dev *hdev);
934
935/* ----- HCI Connections ----- */
936enum {
937 HCI_CONN_AUTH_PEND,
938 HCI_CONN_ENCRYPT_PEND,
939 HCI_CONN_RSWITCH_PEND,
940 HCI_CONN_MODE_CHANGE_PEND,
941 HCI_CONN_SCO_SETUP_PEND,
942 HCI_CONN_MGMT_CONNECTED,
943 HCI_CONN_SSP_ENABLED,
944 HCI_CONN_SC_ENABLED,
945 HCI_CONN_AES_CCM,
946 HCI_CONN_POWER_SAVE,
947 HCI_CONN_FLUSH_KEY,
948 HCI_CONN_ENCRYPT,
949 HCI_CONN_AUTH,
950 HCI_CONN_SECURE,
951 HCI_CONN_FIPS,
952 HCI_CONN_STK_ENCRYPT,
953 HCI_CONN_AUTH_INITIATOR,
954 HCI_CONN_DROP,
955 HCI_CONN_CANCEL,
956 HCI_CONN_PARAM_REMOVAL_PEND,
957 HCI_CONN_NEW_LINK_KEY,
958 HCI_CONN_SCANNING,
959 HCI_CONN_AUTH_FAILURE,
960 HCI_CONN_PER_ADV,
961 HCI_CONN_BIG_CREATED,
962 HCI_CONN_CREATE_CIS,
963 HCI_CONN_CREATE_BIG_SYNC,
964 HCI_CONN_BIG_SYNC,
965 HCI_CONN_BIG_SYNC_FAILED,
966 HCI_CONN_CREATE_PA_SYNC,
967 HCI_CONN_PA_SYNC,
968 HCI_CONN_PA_SYNC_FAILED,
969};
970
971static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
972{
973 struct hci_dev *hdev = conn->hdev;
974 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
975 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
976}
977
978static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
979{
980 struct hci_dev *hdev = conn->hdev;
981 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
982 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
983}
984
985static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
986{
987 struct hci_conn_hash *h = &hdev->conn_hash;
988 list_add_tail_rcu(new: &c->list, head: &h->list);
989 switch (c->type) {
990 case ACL_LINK:
991 h->acl_num++;
992 break;
993 case LE_LINK:
994 h->le_num++;
995 if (c->role == HCI_ROLE_SLAVE)
996 h->le_num_peripheral++;
997 break;
998 case SCO_LINK:
999 case ESCO_LINK:
1000 h->sco_num++;
1001 break;
1002 case CIS_LINK:
1003 case BIS_LINK:
1004 h->iso_num++;
1005 break;
1006 }
1007}
1008
1009static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
1010{
1011 struct hci_conn_hash *h = &hdev->conn_hash;
1012
1013 list_del_rcu(entry: &c->list);
1014 synchronize_rcu();
1015
1016 switch (c->type) {
1017 case ACL_LINK:
1018 h->acl_num--;
1019 break;
1020 case LE_LINK:
1021 h->le_num--;
1022 if (c->role == HCI_ROLE_SLAVE)
1023 h->le_num_peripheral--;
1024 break;
1025 case SCO_LINK:
1026 case ESCO_LINK:
1027 h->sco_num--;
1028 break;
1029 case CIS_LINK:
1030 case BIS_LINK:
1031 h->iso_num--;
1032 break;
1033 }
1034}
1035
1036static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
1037{
1038 struct hci_conn_hash *h = &hdev->conn_hash;
1039 switch (type) {
1040 case ACL_LINK:
1041 return h->acl_num;
1042 case LE_LINK:
1043 return h->le_num;
1044 case SCO_LINK:
1045 case ESCO_LINK:
1046 return h->sco_num;
1047 case CIS_LINK:
1048 case BIS_LINK:
1049 return h->iso_num;
1050 default:
1051 return 0;
1052 }
1053}
1054
1055static inline unsigned int hci_conn_count(struct hci_dev *hdev)
1056{
1057 struct hci_conn_hash *c = &hdev->conn_hash;
1058
1059 return c->acl_num + c->sco_num + c->le_num + c->iso_num;
1060}
1061
1062static inline bool hci_conn_valid(struct hci_dev *hdev, struct hci_conn *conn)
1063{
1064 struct hci_conn_hash *h = &hdev->conn_hash;
1065 struct hci_conn *c;
1066
1067 rcu_read_lock();
1068
1069 list_for_each_entry_rcu(c, &h->list, list) {
1070 if (c == conn) {
1071 rcu_read_unlock();
1072 return true;
1073 }
1074 }
1075 rcu_read_unlock();
1076
1077 return false;
1078}
1079
1080static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
1081{
1082 struct hci_conn_hash *h = &hdev->conn_hash;
1083 struct hci_conn *c;
1084 __u8 type = INVALID_LINK;
1085
1086 rcu_read_lock();
1087
1088 list_for_each_entry_rcu(c, &h->list, list) {
1089 if (c->handle == handle) {
1090 type = c->type;
1091 break;
1092 }
1093 }
1094
1095 rcu_read_unlock();
1096
1097 return type;
1098}
1099
1100static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev,
1101 bdaddr_t *ba, __u8 bis)
1102{
1103 struct hci_conn_hash *h = &hdev->conn_hash;
1104 struct hci_conn *c;
1105
1106 rcu_read_lock();
1107
1108 list_for_each_entry_rcu(c, &h->list, list) {
1109 if (bacmp(ba1: &c->dst, ba2: ba) || c->type != BIS_LINK)
1110 continue;
1111
1112 if (c->iso_qos.bcast.bis == bis) {
1113 rcu_read_unlock();
1114 return c;
1115 }
1116 }
1117 rcu_read_unlock();
1118
1119 return NULL;
1120}
1121
1122static inline struct hci_conn *
1123hci_conn_hash_lookup_create_pa_sync(struct hci_dev *hdev)
1124{
1125 struct hci_conn_hash *h = &hdev->conn_hash;
1126 struct hci_conn *c;
1127
1128 rcu_read_lock();
1129
1130 list_for_each_entry_rcu(c, &h->list, list) {
1131 if (c->type != BIS_LINK)
1132 continue;
1133
1134 if (!test_bit(HCI_CONN_CREATE_PA_SYNC, &c->flags))
1135 continue;
1136
1137 rcu_read_unlock();
1138 return c;
1139 }
1140
1141 rcu_read_unlock();
1142
1143 return NULL;
1144}
1145
1146static inline struct hci_conn *
1147hci_conn_hash_lookup_per_adv_bis(struct hci_dev *hdev,
1148 bdaddr_t *ba,
1149 __u8 big, __u8 bis)
1150{
1151 struct hci_conn_hash *h = &hdev->conn_hash;
1152 struct hci_conn *c;
1153
1154 rcu_read_lock();
1155
1156 list_for_each_entry_rcu(c, &h->list, list) {
1157 if (bacmp(ba1: &c->dst, ba2: ba) || c->type != BIS_LINK ||
1158 !test_bit(HCI_CONN_PER_ADV, &c->flags))
1159 continue;
1160
1161 if (c->iso_qos.bcast.big == big &&
1162 c->iso_qos.bcast.bis == bis) {
1163 rcu_read_unlock();
1164 return c;
1165 }
1166 }
1167 rcu_read_unlock();
1168
1169 return NULL;
1170}
1171
1172static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
1173 __u16 handle)
1174{
1175 struct hci_conn_hash *h = &hdev->conn_hash;
1176 struct hci_conn *c;
1177
1178 rcu_read_lock();
1179
1180 list_for_each_entry_rcu(c, &h->list, list) {
1181 if (c->handle == handle) {
1182 rcu_read_unlock();
1183 return c;
1184 }
1185 }
1186 rcu_read_unlock();
1187
1188 return NULL;
1189}
1190
1191static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
1192 __u8 type, bdaddr_t *ba)
1193{
1194 struct hci_conn_hash *h = &hdev->conn_hash;
1195 struct hci_conn *c;
1196
1197 rcu_read_lock();
1198
1199 list_for_each_entry_rcu(c, &h->list, list) {
1200 if (c->type == type && !bacmp(ba1: &c->dst, ba2: ba)) {
1201 rcu_read_unlock();
1202 return c;
1203 }
1204 }
1205
1206 rcu_read_unlock();
1207
1208 return NULL;
1209}
1210
1211static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
1212 bdaddr_t *ba,
1213 __u8 ba_type)
1214{
1215 struct hci_conn_hash *h = &hdev->conn_hash;
1216 struct hci_conn *c;
1217
1218 rcu_read_lock();
1219
1220 list_for_each_entry_rcu(c, &h->list, list) {
1221 if (c->type != LE_LINK)
1222 continue;
1223
1224 if (ba_type == c->dst_type && !bacmp(ba1: &c->dst, ba2: ba)) {
1225 rcu_read_unlock();
1226 return c;
1227 }
1228 }
1229
1230 rcu_read_unlock();
1231
1232 return NULL;
1233}
1234
1235static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev,
1236 bdaddr_t *ba,
1237 __u8 ba_type,
1238 __u8 cig,
1239 __u8 id)
1240{
1241 struct hci_conn_hash *h = &hdev->conn_hash;
1242 struct hci_conn *c;
1243
1244 rcu_read_lock();
1245
1246 list_for_each_entry_rcu(c, &h->list, list) {
1247 if (c->type != CIS_LINK)
1248 continue;
1249
1250 /* Match CIG ID if set */
1251 if (cig != c->iso_qos.ucast.cig)
1252 continue;
1253
1254 /* Match CIS ID if set */
1255 if (id != c->iso_qos.ucast.cis)
1256 continue;
1257
1258 /* Match destination address if set */
1259 if (!ba || (ba_type == c->dst_type && !bacmp(ba1: &c->dst, ba2: ba))) {
1260 rcu_read_unlock();
1261 return c;
1262 }
1263 }
1264
1265 rcu_read_unlock();
1266
1267 return NULL;
1268}
1269
1270static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev,
1271 __u8 handle)
1272{
1273 struct hci_conn_hash *h = &hdev->conn_hash;
1274 struct hci_conn *c;
1275
1276 rcu_read_lock();
1277
1278 list_for_each_entry_rcu(c, &h->list, list) {
1279 if (c->type != CIS_LINK)
1280 continue;
1281
1282 if (handle == c->iso_qos.ucast.cig) {
1283 rcu_read_unlock();
1284 return c;
1285 }
1286 }
1287
1288 rcu_read_unlock();
1289
1290 return NULL;
1291}
1292
1293static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev,
1294 __u8 handle)
1295{
1296 struct hci_conn_hash *h = &hdev->conn_hash;
1297 struct hci_conn *c;
1298
1299 rcu_read_lock();
1300
1301 list_for_each_entry_rcu(c, &h->list, list) {
1302 if (c->type != BIS_LINK)
1303 continue;
1304
1305 if (handle == c->iso_qos.bcast.big) {
1306 rcu_read_unlock();
1307 return c;
1308 }
1309 }
1310
1311 rcu_read_unlock();
1312
1313 return NULL;
1314}
1315
1316static inline struct hci_conn *
1317hci_conn_hash_lookup_big_sync_pend(struct hci_dev *hdev,
1318 __u8 handle, __u8 num_bis)
1319{
1320 struct hci_conn_hash *h = &hdev->conn_hash;
1321 struct hci_conn *c;
1322
1323 rcu_read_lock();
1324
1325 list_for_each_entry_rcu(c, &h->list, list) {
1326 if (c->type != BIS_LINK)
1327 continue;
1328
1329 if (handle == c->iso_qos.bcast.big && num_bis == c->num_bis) {
1330 rcu_read_unlock();
1331 return c;
1332 }
1333 }
1334
1335 rcu_read_unlock();
1336
1337 return NULL;
1338}
1339
1340static inline struct hci_conn *
1341hci_conn_hash_lookup_big_state(struct hci_dev *hdev, __u8 handle, __u16 state)
1342{
1343 struct hci_conn_hash *h = &hdev->conn_hash;
1344 struct hci_conn *c;
1345
1346 rcu_read_lock();
1347
1348 list_for_each_entry_rcu(c, &h->list, list) {
1349 if (c->type != BIS_LINK || bacmp(ba1: &c->dst, BDADDR_ANY) ||
1350 c->state != state)
1351 continue;
1352
1353 if (handle == c->iso_qos.bcast.big) {
1354 rcu_read_unlock();
1355 return c;
1356 }
1357 }
1358
1359 rcu_read_unlock();
1360
1361 return NULL;
1362}
1363
1364static inline struct hci_conn *
1365hci_conn_hash_lookup_pa_sync_big_handle(struct hci_dev *hdev, __u8 big)
1366{
1367 struct hci_conn_hash *h = &hdev->conn_hash;
1368 struct hci_conn *c;
1369
1370 rcu_read_lock();
1371
1372 list_for_each_entry_rcu(c, &h->list, list) {
1373 if (c->type != BIS_LINK ||
1374 !test_bit(HCI_CONN_PA_SYNC, &c->flags))
1375 continue;
1376
1377 if (c->iso_qos.bcast.big == big) {
1378 rcu_read_unlock();
1379 return c;
1380 }
1381 }
1382 rcu_read_unlock();
1383
1384 return NULL;
1385}
1386
1387static inline struct hci_conn *
1388hci_conn_hash_lookup_pa_sync_handle(struct hci_dev *hdev, __u16 sync_handle)
1389{
1390 struct hci_conn_hash *h = &hdev->conn_hash;
1391 struct hci_conn *c;
1392
1393 rcu_read_lock();
1394
1395 list_for_each_entry_rcu(c, &h->list, list) {
1396 if (c->type != BIS_LINK)
1397 continue;
1398
1399 /* Ignore the listen hcon, we are looking
1400 * for the child hcon that was created as
1401 * a result of the PA sync established event.
1402 */
1403 if (c->state == BT_LISTEN)
1404 continue;
1405
1406 if (c->sync_handle == sync_handle) {
1407 rcu_read_unlock();
1408 return c;
1409 }
1410 }
1411 rcu_read_unlock();
1412
1413 return NULL;
1414}
1415
1416static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1417 __u8 type, __u16 state)
1418{
1419 struct hci_conn_hash *h = &hdev->conn_hash;
1420 struct hci_conn *c;
1421
1422 rcu_read_lock();
1423
1424 list_for_each_entry_rcu(c, &h->list, list) {
1425 if (c->type == type && c->state == state) {
1426 rcu_read_unlock();
1427 return c;
1428 }
1429 }
1430
1431 rcu_read_unlock();
1432
1433 return NULL;
1434}
1435
1436typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data);
1437static inline void hci_conn_hash_list_state(struct hci_dev *hdev,
1438 hci_conn_func_t func, __u8 type,
1439 __u16 state, void *data)
1440{
1441 struct hci_conn_hash *h = &hdev->conn_hash;
1442 struct hci_conn *c;
1443
1444 if (!func)
1445 return;
1446
1447 rcu_read_lock();
1448
1449 list_for_each_entry_rcu(c, &h->list, list) {
1450 if (c->type == type && c->state == state)
1451 func(c, data);
1452 }
1453
1454 rcu_read_unlock();
1455}
1456
1457static inline void hci_conn_hash_list_flag(struct hci_dev *hdev,
1458 hci_conn_func_t func, __u8 type,
1459 __u8 flag, void *data)
1460{
1461 struct hci_conn_hash *h = &hdev->conn_hash;
1462 struct hci_conn *c;
1463
1464 if (!func)
1465 return;
1466
1467 rcu_read_lock();
1468
1469 list_for_each_entry_rcu(c, &h->list, list) {
1470 if (c->type == type && test_bit(flag, &c->flags))
1471 func(c, data);
1472 }
1473
1474 rcu_read_unlock();
1475}
1476
1477static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1478{
1479 struct hci_conn_hash *h = &hdev->conn_hash;
1480 struct hci_conn *c;
1481
1482 rcu_read_lock();
1483
1484 list_for_each_entry_rcu(c, &h->list, list) {
1485 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1486 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1487 rcu_read_unlock();
1488 return c;
1489 }
1490 }
1491
1492 rcu_read_unlock();
1493
1494 return NULL;
1495}
1496
1497/* Returns true if an le connection is in the scanning state */
1498static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev)
1499{
1500 struct hci_conn_hash *h = &hdev->conn_hash;
1501 struct hci_conn *c;
1502
1503 rcu_read_lock();
1504
1505 list_for_each_entry_rcu(c, &h->list, list) {
1506 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1507 test_bit(HCI_CONN_SCANNING, &c->flags)) {
1508 rcu_read_unlock();
1509 return true;
1510 }
1511 }
1512
1513 rcu_read_unlock();
1514
1515 return false;
1516}
1517
1518int hci_disconnect(struct hci_conn *conn, __u8 reason);
1519bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1520void hci_sco_setup(struct hci_conn *conn, __u8 status);
1521bool hci_iso_setup_path(struct hci_conn *conn);
1522int hci_le_create_cis_pending(struct hci_dev *hdev);
1523int hci_conn_check_create_cis(struct hci_conn *conn);
1524
1525struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1526 u8 role, u16 handle);
1527struct hci_conn *hci_conn_add_unset(struct hci_dev *hdev, int type,
1528 bdaddr_t *dst, u8 role);
1529void hci_conn_del(struct hci_conn *conn);
1530void hci_conn_hash_flush(struct hci_dev *hdev);
1531
1532struct hci_chan *hci_chan_create(struct hci_conn *conn);
1533void hci_chan_del(struct hci_chan *chan);
1534void hci_chan_list_flush(struct hci_conn *conn);
1535struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1536
1537struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1538 u8 dst_type, u8 sec_level,
1539 u16 conn_timeout,
1540 enum conn_reasons conn_reason);
1541struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1542 u8 dst_type, bool dst_resolved, u8 sec_level,
1543 u16 conn_timeout, u8 role, u8 phy, u8 sec_phy);
1544void hci_connect_le_scan_cleanup(struct hci_conn *conn, u8 status);
1545struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1546 u8 sec_level, u8 auth_type,
1547 enum conn_reasons conn_reason, u16 timeout);
1548struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1549 __u16 setting, struct bt_codec *codec,
1550 u16 timeout);
1551struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
1552 __u8 dst_type, struct bt_iso_qos *qos);
1553struct hci_conn *hci_bind_bis(struct hci_dev *hdev, bdaddr_t *dst,
1554 struct bt_iso_qos *qos,
1555 __u8 base_len, __u8 *base);
1556struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
1557 __u8 dst_type, struct bt_iso_qos *qos);
1558struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
1559 __u8 dst_type, struct bt_iso_qos *qos,
1560 __u8 data_len, __u8 *data);
1561struct hci_conn *hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst,
1562 __u8 dst_type, __u8 sid, struct bt_iso_qos *qos);
1563int hci_conn_big_create_sync(struct hci_dev *hdev, struct hci_conn *hcon,
1564 struct bt_iso_qos *qos, __u16 sync_handle,
1565 __u8 num_bis, __u8 bis[]);
1566int hci_conn_check_link_mode(struct hci_conn *conn);
1567int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1568int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1569 bool initiator);
1570int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1571
1572void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1573
1574void hci_conn_failed(struct hci_conn *conn, u8 status);
1575u8 hci_conn_set_handle(struct hci_conn *conn, u16 handle);
1576
1577void hci_conn_tx_queue(struct hci_conn *conn, struct sk_buff *skb);
1578void hci_conn_tx_dequeue(struct hci_conn *conn);
1579void hci_setup_tx_timestamp(struct sk_buff *skb, size_t key_offset,
1580 const struct sockcm_cookie *sockc);
1581
1582static inline void hci_sockcm_init(struct sockcm_cookie *sockc, struct sock *sk)
1583{
1584 *sockc = (struct sockcm_cookie) {
1585 .tsflags = READ_ONCE(sk->sk_tsflags),
1586 };
1587}
1588
1589/*
1590 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1591 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1592 * working or anything else. They just guarantee that the object is available
1593 * and can be dereferenced. So you can use its locks, local variables and any
1594 * other constant data.
1595 * Before accessing runtime data, you _must_ lock the object and then check that
1596 * it is still running. As soon as you release the locks, the connection might
1597 * get dropped, though.
1598 *
1599 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1600 * how long the underlying connection is held. So every channel that runs on the
1601 * hci_conn object calls this to prevent the connection from disappearing. As
1602 * long as you hold a device, you must also guarantee that you have a valid
1603 * reference to the device via hci_conn_get() (or the initial reference from
1604 * hci_conn_add()).
1605 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1606 * break because nobody cares for that. But this means, we cannot use
1607 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1608 */
1609
1610static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1611{
1612 get_device(dev: &conn->dev);
1613 return conn;
1614}
1615
1616static inline void hci_conn_put(struct hci_conn *conn)
1617{
1618 put_device(dev: &conn->dev);
1619}
1620
1621static inline struct hci_conn *hci_conn_hold(struct hci_conn *conn)
1622{
1623 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1624
1625 atomic_inc(v: &conn->refcnt);
1626 cancel_delayed_work(dwork: &conn->disc_work);
1627
1628 return conn;
1629}
1630
1631static inline void hci_conn_drop(struct hci_conn *conn)
1632{
1633 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1634
1635 if (atomic_dec_and_test(v: &conn->refcnt)) {
1636 unsigned long timeo;
1637
1638 switch (conn->type) {
1639 case ACL_LINK:
1640 case LE_LINK:
1641 cancel_delayed_work(dwork: &conn->idle_work);
1642 if (conn->state == BT_CONNECTED) {
1643 timeo = conn->disc_timeout;
1644 if (!conn->out)
1645 timeo *= 2;
1646 } else {
1647 timeo = 0;
1648 }
1649 break;
1650
1651 default:
1652 timeo = 0;
1653 break;
1654 }
1655
1656 cancel_delayed_work(dwork: &conn->disc_work);
1657 queue_delayed_work(wq: conn->hdev->workqueue,
1658 dwork: &conn->disc_work, delay: timeo);
1659 }
1660}
1661
1662/* ----- HCI Devices ----- */
1663static inline void hci_dev_put(struct hci_dev *d)
1664{
1665 BT_DBG("%s orig refcnt %d", d->name,
1666 kref_read(&d->dev.kobj.kref));
1667
1668 put_device(dev: &d->dev);
1669}
1670
1671static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1672{
1673 BT_DBG("%s orig refcnt %d", d->name,
1674 kref_read(&d->dev.kobj.kref));
1675
1676 get_device(dev: &d->dev);
1677 return d;
1678}
1679
1680#define hci_dev_lock(d) mutex_lock(&d->lock)
1681#define hci_dev_unlock(d) mutex_unlock(&d->lock)
1682
1683#define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1684#define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1685
1686static inline void *hci_get_drvdata(struct hci_dev *hdev)
1687{
1688 return dev_get_drvdata(dev: &hdev->dev);
1689}
1690
1691static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1692{
1693 dev_set_drvdata(dev: &hdev->dev, data);
1694}
1695
1696static inline void *hci_get_priv(struct hci_dev *hdev)
1697{
1698 return (char *)hdev + sizeof(*hdev);
1699}
1700
1701struct hci_dev *hci_dev_get(int index);
1702struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1703
1704struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);
1705
1706static inline struct hci_dev *hci_alloc_dev(void)
1707{
1708 return hci_alloc_dev_priv(sizeof_priv: 0);
1709}
1710
1711void hci_free_dev(struct hci_dev *hdev);
1712int hci_register_dev(struct hci_dev *hdev);
1713void hci_unregister_dev(struct hci_dev *hdev);
1714void hci_release_dev(struct hci_dev *hdev);
1715int hci_register_suspend_notifier(struct hci_dev *hdev);
1716int hci_unregister_suspend_notifier(struct hci_dev *hdev);
1717int hci_suspend_dev(struct hci_dev *hdev);
1718int hci_resume_dev(struct hci_dev *hdev);
1719int hci_reset_dev(struct hci_dev *hdev);
1720int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1721int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1722__printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1723__printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1724
1725static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1726{
1727#if IS_ENABLED(CONFIG_BT_MSFTEXT)
1728 hdev->msft_opcode = opcode;
1729#endif
1730}
1731
1732static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1733{
1734#if IS_ENABLED(CONFIG_BT_AOSPEXT)
1735 hdev->aosp_capable = true;
1736#endif
1737}
1738
1739static inline void hci_devcd_setup(struct hci_dev *hdev)
1740{
1741#ifdef CONFIG_DEV_COREDUMP
1742 INIT_WORK(&hdev->dump.dump_rx, hci_devcd_rx);
1743 INIT_DELAYED_WORK(&hdev->dump.dump_timeout, hci_devcd_timeout);
1744 skb_queue_head_init(list: &hdev->dump.dump_q);
1745#endif
1746}
1747
1748int hci_dev_open(__u16 dev);
1749int hci_dev_close(__u16 dev);
1750int hci_dev_do_close(struct hci_dev *hdev);
1751int hci_dev_reset(__u16 dev);
1752int hci_dev_reset_stat(__u16 dev);
1753int hci_dev_cmd(unsigned int cmd, void __user *arg);
1754int hci_get_dev_list(void __user *arg);
1755int hci_get_dev_info(void __user *arg);
1756int hci_get_conn_list(void __user *arg);
1757int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1758int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1759int hci_inquiry(void __user *arg);
1760
1761struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1762 bdaddr_t *bdaddr, u8 type);
1763struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1764 struct list_head *list, bdaddr_t *bdaddr,
1765 u8 type);
1766struct bdaddr_list_with_flags *
1767hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1768 u8 type);
1769int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1770int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1771 u8 type, u8 *peer_irk, u8 *local_irk);
1772int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1773 u8 type, u32 flags);
1774int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1775int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1776 u8 type);
1777void hci_bdaddr_list_clear(struct list_head *list);
1778
1779struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1780 bdaddr_t *addr, u8 addr_type);
1781struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1782 bdaddr_t *addr, u8 addr_type);
1783void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1784void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1785void hci_conn_params_free(struct hci_conn_params *param);
1786
1787void hci_pend_le_list_del_init(struct hci_conn_params *param);
1788void hci_pend_le_list_add(struct hci_conn_params *param,
1789 struct list_head *list);
1790struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1791 bdaddr_t *addr,
1792 u8 addr_type);
1793
1794void hci_uuids_clear(struct hci_dev *hdev);
1795
1796void hci_link_keys_clear(struct hci_dev *hdev);
1797u8 *hci_conn_key_enc_size(struct hci_conn *conn);
1798struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1799struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1800 bdaddr_t *bdaddr, u8 *val, u8 type,
1801 u8 pin_len, bool *persistent);
1802struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1803 u8 addr_type, u8 type, u8 authenticated,
1804 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1805struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1806 u8 addr_type, u8 role);
1807int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1808void hci_smp_ltks_clear(struct hci_dev *hdev);
1809int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1810
1811struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1812struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1813 u8 addr_type);
1814struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1815 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1816void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1817bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1818void hci_blocked_keys_clear(struct hci_dev *hdev);
1819void hci_smp_irks_clear(struct hci_dev *hdev);
1820
1821bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1822
1823void hci_remote_oob_data_clear(struct hci_dev *hdev);
1824struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1825 bdaddr_t *bdaddr, u8 bdaddr_type);
1826int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1827 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1828 u8 *hash256, u8 *rand256);
1829int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1830 u8 bdaddr_type);
1831
1832void hci_adv_instances_clear(struct hci_dev *hdev);
1833struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1834struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1835struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance,
1836 u32 flags, u16 adv_data_len, u8 *adv_data,
1837 u16 scan_rsp_len, u8 *scan_rsp_data,
1838 u16 timeout, u16 duration, s8 tx_power,
1839 u32 min_interval, u32 max_interval,
1840 u8 mesh_handle);
1841struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance,
1842 u32 flags, u8 data_len, u8 *data,
1843 u32 min_interval, u32 max_interval);
1844int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1845 u16 adv_data_len, u8 *adv_data,
1846 u16 scan_rsp_len, u8 *scan_rsp_data);
1847int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1848void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1849u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance);
1850bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance);
1851
1852void hci_adv_monitors_clear(struct hci_dev *hdev);
1853void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1854int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1855int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle);
1856int hci_remove_all_adv_monitor(struct hci_dev *hdev);
1857bool hci_is_adv_monitoring(struct hci_dev *hdev);
1858int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1859
1860void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1861
1862void hci_init_sysfs(struct hci_dev *hdev);
1863void hci_conn_init_sysfs(struct hci_conn *conn);
1864void hci_conn_add_sysfs(struct hci_conn *conn);
1865void hci_conn_del_sysfs(struct hci_conn *conn);
1866
1867#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1868#define GET_HCIDEV_DEV(hdev) ((hdev)->dev.parent)
1869
1870/* ----- LMP capabilities ----- */
1871#define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1872#define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1873#define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1874#define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1875#define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1876#define lmp_sco_capable(dev) ((dev)->features[0][1] & LMP_SCO)
1877#define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1878#define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1879#define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1880#define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1881#define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1882#define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1883#define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1884#define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1885#define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1886#define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1887#define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1888#define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1889#define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1890#define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1891#define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1892#define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1893#define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1894#define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1895#define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1896
1897/* ----- Extended LMP capabilities ----- */
1898#define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1899#define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1900#define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1901#define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1902#define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1903#define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1904
1905/* ----- Host capabilities ----- */
1906#define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1907#define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1908#define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1909#define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1910
1911#define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1912 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1913#define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1914 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1915#define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \
1916 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED))
1917#define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \
1918 !adv->rpa_expired)
1919
1920#define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1921 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1922
1923#define le_2m_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_2M))
1924
1925#define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1926 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1927
1928#define le_coded_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_CODED) && \
1929 !test_bit(HCI_QUIRK_BROKEN_LE_CODED, \
1930 &(dev)->quirks))
1931
1932#define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1933 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1934
1935#define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1936
1937#define privacy_mode_capable(dev) (ll_privacy_capable(dev) && \
1938 (hdev->commands[39] & 0x04))
1939
1940#define read_key_size_capable(dev) \
1941 ((dev)->commands[20] & 0x10 && \
1942 !test_bit(HCI_QUIRK_BROKEN_READ_ENC_KEY_SIZE, &hdev->quirks))
1943
1944#define read_voice_setting_capable(dev) \
1945 ((dev)->commands[9] & 0x04 && \
1946 !test_bit(HCI_QUIRK_BROKEN_READ_VOICE_SETTING, &(dev)->quirks))
1947
1948/* Use enhanced synchronous connection if command is supported and its quirk
1949 * has not been set.
1950 */
1951#define enhanced_sync_conn_capable(dev) \
1952 (((dev)->commands[29] & 0x08) && \
1953 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks))
1954
1955/* Use ext scanning if set ext scan param and ext scan enable is supported */
1956#define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1957 ((dev)->commands[37] & 0x40) && \
1958 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks))
1959
1960/* Use ext create connection if command is supported */
1961#define use_ext_conn(dev) (((dev)->commands[37] & 0x80) && \
1962 !test_bit(HCI_QUIRK_BROKEN_EXT_CREATE_CONN, &(dev)->quirks))
1963/* Extended advertising support */
1964#define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1965
1966/* Maximum advertising length */
1967#define max_adv_len(dev) \
1968 (ext_adv_capable(dev) ? HCI_MAX_EXT_AD_LENGTH : HCI_MAX_AD_LENGTH)
1969
1970/* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789:
1971 *
1972 * C24: Mandatory if the LE Controller supports Connection State and either
1973 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported
1974 */
1975#define use_enhanced_conn_complete(dev) ((ll_privacy_capable(dev) || \
1976 ext_adv_capable(dev)) && \
1977 !test_bit(HCI_QUIRK_BROKEN_EXT_CREATE_CONN, \
1978 &(dev)->quirks))
1979
1980/* Periodic advertising support */
1981#define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV))
1982
1983/* CIS Master/Slave and BIS support */
1984#define iso_capable(dev) (cis_capable(dev) || bis_capable(dev))
1985#define cis_capable(dev) \
1986 (cis_central_capable(dev) || cis_peripheral_capable(dev))
1987#define cis_central_capable(dev) \
1988 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL)
1989#define cis_peripheral_capable(dev) \
1990 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL)
1991#define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER)
1992#define sync_recv_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_SYNC_RECEIVER)
1993
1994#define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \
1995 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks)))
1996
1997/* ----- HCI protocols ----- */
1998#define HCI_PROTO_DEFER 0x01
1999
2000static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
2001 __u8 type, __u8 *flags)
2002{
2003 switch (type) {
2004 case ACL_LINK:
2005 return l2cap_connect_ind(hdev, bdaddr);
2006
2007 case SCO_LINK:
2008 case ESCO_LINK:
2009 return sco_connect_ind(hdev, bdaddr, flags);
2010
2011 case CIS_LINK:
2012 case BIS_LINK:
2013 return iso_connect_ind(hdev, bdaddr, flags);
2014
2015 default:
2016 BT_ERR("unknown link type %d", type);
2017 return -EINVAL;
2018 }
2019}
2020
2021static inline int hci_proto_disconn_ind(struct hci_conn *conn)
2022{
2023 if (conn->type != ACL_LINK && conn->type != LE_LINK)
2024 return HCI_ERROR_REMOTE_USER_TERM;
2025
2026 return l2cap_disconn_ind(hcon: conn);
2027}
2028
2029/* ----- HCI callbacks ----- */
2030struct hci_cb {
2031 struct list_head list;
2032
2033 char *name;
2034
2035 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
2036 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
2037 void (*security_cfm) (struct hci_conn *conn, __u8 status,
2038 __u8 encrypt);
2039 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
2040 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
2041};
2042
2043static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
2044{
2045 struct hci_cb *cb;
2046
2047 mutex_lock(&hci_cb_list_lock);
2048 list_for_each_entry(cb, &hci_cb_list, list) {
2049 if (cb->connect_cfm)
2050 cb->connect_cfm(conn, status);
2051 }
2052 mutex_unlock(lock: &hci_cb_list_lock);
2053
2054 if (conn->connect_cfm_cb)
2055 conn->connect_cfm_cb(conn, status);
2056}
2057
2058static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
2059{
2060 struct hci_cb *cb;
2061
2062 mutex_lock(&hci_cb_list_lock);
2063 list_for_each_entry(cb, &hci_cb_list, list) {
2064 if (cb->disconn_cfm)
2065 cb->disconn_cfm(conn, reason);
2066 }
2067 mutex_unlock(lock: &hci_cb_list_lock);
2068
2069 if (conn->disconn_cfm_cb)
2070 conn->disconn_cfm_cb(conn, reason);
2071}
2072
2073static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
2074{
2075 struct hci_cb *cb;
2076 __u8 encrypt;
2077
2078 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
2079 return;
2080
2081 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
2082
2083 mutex_lock(&hci_cb_list_lock);
2084 list_for_each_entry(cb, &hci_cb_list, list) {
2085 if (cb->security_cfm)
2086 cb->security_cfm(conn, status, encrypt);
2087 }
2088 mutex_unlock(lock: &hci_cb_list_lock);
2089
2090 if (conn->security_cfm_cb)
2091 conn->security_cfm_cb(conn, status);
2092}
2093
2094static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
2095{
2096 struct hci_cb *cb;
2097 __u8 encrypt;
2098
2099 if (conn->state == BT_CONFIG) {
2100 if (!status)
2101 conn->state = BT_CONNECTED;
2102
2103 hci_connect_cfm(conn, status);
2104 hci_conn_drop(conn);
2105 return;
2106 }
2107
2108 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
2109 encrypt = 0x00;
2110 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
2111 encrypt = 0x02;
2112 else
2113 encrypt = 0x01;
2114
2115 if (!status) {
2116 if (conn->sec_level == BT_SECURITY_SDP)
2117 conn->sec_level = BT_SECURITY_LOW;
2118
2119 if (conn->pending_sec_level > conn->sec_level)
2120 conn->sec_level = conn->pending_sec_level;
2121 }
2122
2123 mutex_lock(&hci_cb_list_lock);
2124 list_for_each_entry(cb, &hci_cb_list, list) {
2125 if (cb->security_cfm)
2126 cb->security_cfm(conn, status, encrypt);
2127 }
2128 mutex_unlock(lock: &hci_cb_list_lock);
2129
2130 if (conn->security_cfm_cb)
2131 conn->security_cfm_cb(conn, status);
2132}
2133
2134static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
2135{
2136 struct hci_cb *cb;
2137
2138 mutex_lock(&hci_cb_list_lock);
2139 list_for_each_entry(cb, &hci_cb_list, list) {
2140 if (cb->key_change_cfm)
2141 cb->key_change_cfm(conn, status);
2142 }
2143 mutex_unlock(lock: &hci_cb_list_lock);
2144}
2145
2146static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
2147 __u8 role)
2148{
2149 struct hci_cb *cb;
2150
2151 mutex_lock(&hci_cb_list_lock);
2152 list_for_each_entry(cb, &hci_cb_list, list) {
2153 if (cb->role_switch_cfm)
2154 cb->role_switch_cfm(conn, status, role);
2155 }
2156 mutex_unlock(lock: &hci_cb_list_lock);
2157}
2158
2159static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
2160{
2161 if (addr_type != ADDR_LE_DEV_RANDOM)
2162 return false;
2163
2164 if ((bdaddr->b[5] & 0xc0) == 0x40)
2165 return true;
2166
2167 return false;
2168}
2169
2170static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
2171{
2172 if (addr_type == ADDR_LE_DEV_PUBLIC)
2173 return true;
2174
2175 /* Check for Random Static address type */
2176 if ((addr->b[5] & 0xc0) == 0xc0)
2177 return true;
2178
2179 return false;
2180}
2181
2182static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
2183 bdaddr_t *bdaddr, u8 addr_type)
2184{
2185 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
2186 return NULL;
2187
2188 return hci_find_irk_by_rpa(hdev, rpa: bdaddr);
2189}
2190
2191static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
2192 u16 to_multiplier)
2193{
2194 u16 max_latency;
2195
2196 if (min > max) {
2197 BT_WARN("min %d > max %d", min, max);
2198 return -EINVAL;
2199 }
2200
2201 if (min < 6) {
2202 BT_WARN("min %d < 6", min);
2203 return -EINVAL;
2204 }
2205
2206 if (max > 3200) {
2207 BT_WARN("max %d > 3200", max);
2208 return -EINVAL;
2209 }
2210
2211 if (to_multiplier < 10) {
2212 BT_WARN("to_multiplier %d < 10", to_multiplier);
2213 return -EINVAL;
2214 }
2215
2216 if (to_multiplier > 3200) {
2217 BT_WARN("to_multiplier %d > 3200", to_multiplier);
2218 return -EINVAL;
2219 }
2220
2221 if (max >= to_multiplier * 8) {
2222 BT_WARN("max %d >= to_multiplier %d * 8", max, to_multiplier);
2223 return -EINVAL;
2224 }
2225
2226 max_latency = (to_multiplier * 4 / max) - 1;
2227 if (latency > 499) {
2228 BT_WARN("latency %d > 499", latency);
2229 return -EINVAL;
2230 }
2231
2232 if (latency > max_latency) {
2233 BT_WARN("latency %d > max_latency %d", latency, max_latency);
2234 return -EINVAL;
2235 }
2236
2237 return 0;
2238}
2239
2240int hci_register_cb(struct hci_cb *hcb);
2241int hci_unregister_cb(struct hci_cb *hcb);
2242
2243int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
2244 const void *param);
2245
2246int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
2247 const void *param);
2248void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
2249void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
2250void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb);
2251
2252void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
2253void *hci_recv_event_data(struct hci_dev *hdev, __u8 event);
2254
2255u32 hci_conn_get_phy(struct hci_conn *conn);
2256
2257/* ----- HCI Sockets ----- */
2258void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
2259void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
2260 int flag, struct sock *skip_sk);
2261void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
2262void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
2263 void *data, u16 data_len, ktime_t tstamp,
2264 int flag, struct sock *skip_sk);
2265
2266void hci_sock_dev_event(struct hci_dev *hdev, int event);
2267
2268#define HCI_MGMT_VAR_LEN BIT(0)
2269#define HCI_MGMT_NO_HDEV BIT(1)
2270#define HCI_MGMT_UNTRUSTED BIT(2)
2271#define HCI_MGMT_UNCONFIGURED BIT(3)
2272#define HCI_MGMT_HDEV_OPTIONAL BIT(4)
2273
2274struct hci_mgmt_handler {
2275 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
2276 u16 data_len);
2277 size_t data_len;
2278 unsigned long flags;
2279};
2280
2281struct hci_mgmt_chan {
2282 struct list_head list;
2283 unsigned short channel;
2284 size_t handler_count;
2285 const struct hci_mgmt_handler *handlers;
2286 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
2287};
2288
2289int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
2290void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
2291
2292/* Management interface */
2293#define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
2294#define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
2295 BIT(BDADDR_LE_RANDOM))
2296#define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
2297 BIT(BDADDR_LE_PUBLIC) | \
2298 BIT(BDADDR_LE_RANDOM))
2299
2300/* These LE scan and inquiry parameters were chosen according to LE General
2301 * Discovery Procedure specification.
2302 */
2303#define DISCOV_LE_SCAN_WIN 0x0012 /* 11.25 msec */
2304#define DISCOV_LE_SCAN_INT 0x0012 /* 11.25 msec */
2305#define DISCOV_LE_SCAN_INT_FAST 0x0060 /* 60 msec */
2306#define DISCOV_LE_SCAN_WIN_FAST 0x0030 /* 30 msec */
2307#define DISCOV_LE_SCAN_INT_CONN 0x0060 /* 60 msec */
2308#define DISCOV_LE_SCAN_WIN_CONN 0x0060 /* 60 msec */
2309#define DISCOV_LE_SCAN_INT_SLOW1 0x0800 /* 1.28 sec */
2310#define DISCOV_LE_SCAN_WIN_SLOW1 0x0012 /* 11.25 msec */
2311#define DISCOV_LE_SCAN_INT_SLOW2 0x1000 /* 2.56 sec */
2312#define DISCOV_LE_SCAN_WIN_SLOW2 0x0024 /* 22.5 msec */
2313#define DISCOV_CODED_SCAN_INT_FAST 0x0120 /* 180 msec */
2314#define DISCOV_CODED_SCAN_WIN_FAST 0x0090 /* 90 msec */
2315#define DISCOV_CODED_SCAN_INT_SLOW1 0x1800 /* 3.84 sec */
2316#define DISCOV_CODED_SCAN_WIN_SLOW1 0x0036 /* 33.75 msec */
2317#define DISCOV_CODED_SCAN_INT_SLOW2 0x3000 /* 7.68 sec */
2318#define DISCOV_CODED_SCAN_WIN_SLOW2 0x006c /* 67.5 msec */
2319#define DISCOV_LE_TIMEOUT 10240 /* msec */
2320#define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
2321#define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
2322#define DISCOV_BREDR_INQUIRY_LEN 0x08
2323#define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
2324#define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */
2325#define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */
2326#define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */
2327#define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */
2328#define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */
2329#define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */
2330#define INTERVAL_TO_MS(x) (((x) * 10) / 0x10)
2331
2332#define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */
2333
2334void mgmt_fill_version_info(void *ver);
2335int mgmt_new_settings(struct hci_dev *hdev);
2336void mgmt_index_added(struct hci_dev *hdev);
2337void mgmt_index_removed(struct hci_dev *hdev);
2338void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
2339void mgmt_power_on(struct hci_dev *hdev, int err);
2340void __mgmt_power_off(struct hci_dev *hdev);
2341void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
2342 bool persistent);
2343void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
2344 u8 *name, u8 name_len);
2345void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
2346 u8 link_type, u8 addr_type, u8 reason,
2347 bool mgmt_connected);
2348void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
2349 u8 link_type, u8 addr_type, u8 status);
2350void mgmt_connect_failed(struct hci_dev *hdev, struct hci_conn *conn,
2351 u8 status);
2352void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
2353void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2354 u8 status);
2355void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2356 u8 status);
2357int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2358 u8 link_type, u8 addr_type, u32 value,
2359 u8 confirm_hint);
2360int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2361 u8 link_type, u8 addr_type, u8 status);
2362int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2363 u8 link_type, u8 addr_type, u8 status);
2364int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2365 u8 link_type, u8 addr_type);
2366int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2367 u8 link_type, u8 addr_type, u8 status);
2368int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2369 u8 link_type, u8 addr_type, u8 status);
2370int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
2371 u8 link_type, u8 addr_type, u32 passkey,
2372 u8 entered);
2373void mgmt_auth_failed(struct hci_conn *conn, u8 status);
2374void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
2375void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
2376 u8 status);
2377void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
2378void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2379 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
2380 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len,
2381 u64 instant);
2382void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2383 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
2384void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
2385void mgmt_suspending(struct hci_dev *hdev, u8 state);
2386void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
2387 u8 addr_type);
2388bool mgmt_powering_down(struct hci_dev *hdev);
2389void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
2390void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
2391void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
2392 bool persistent);
2393void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
2394 u8 bdaddr_type, u8 store_hint, u16 min_interval,
2395 u16 max_interval, u16 latency, u16 timeout);
2396void mgmt_smp_complete(struct hci_conn *conn, bool complete);
2397bool mgmt_get_connectable(struct hci_dev *hdev);
2398u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
2399void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
2400 u8 instance);
2401void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
2402 u8 instance);
2403void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle);
2404int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
2405void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle,
2406 bdaddr_t *bdaddr, u8 addr_type);
2407
2408int hci_abort_conn(struct hci_conn *conn, u8 reason);
2409u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
2410 u16 to_multiplier);
2411void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
2412 __u8 ltk[16], __u8 key_size);
2413
2414void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
2415 u8 *bdaddr_type);
2416
2417#define SCO_AIRMODE_MASK 0x0003
2418#define SCO_AIRMODE_CVSD 0x0000
2419#define SCO_AIRMODE_TRANSP 0x0003
2420
2421#define LOCAL_CODEC_ACL_MASK BIT(0)
2422#define LOCAL_CODEC_SCO_MASK BIT(1)
2423
2424#define TRANSPORT_TYPE_MAX 0x04
2425
2426#endif /* __HCI_CORE_H */
2427

source code of linux/include/net/bluetooth/hci_core.h