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