1 /*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4 Copyright 2023 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 #include <linux/srcu.h>
33
34 #include <net/bluetooth/hci.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 */
46 struct 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
57 struct 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
70 struct 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 scan_start;
96 unsigned long scan_duration;
97 unsigned long name_resolve_timeout;
98 };
99
100 #define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
101
102 enum suspend_tasks {
103 SUSPEND_PAUSE_DISCOVERY,
104 SUSPEND_UNPAUSE_DISCOVERY,
105
106 SUSPEND_PAUSE_ADVERTISING,
107 SUSPEND_UNPAUSE_ADVERTISING,
108
109 SUSPEND_SCAN_DISABLE,
110 SUSPEND_SCAN_ENABLE,
111 SUSPEND_DISCONNECTING,
112
113 SUSPEND_POWERING_DOWN,
114
115 SUSPEND_PREPARE_NOTIFIER,
116
117 SUSPEND_SET_ADV_FILTER,
118 __SUSPEND_NUM_TASKS
119 };
120
121 enum suspended_state {
122 BT_RUNNING = 0,
123 BT_SUSPEND_DISCONNECT,
124 BT_SUSPEND_CONFIGURE_WAKE,
125 };
126
127 struct hci_conn_hash {
128 struct list_head list;
129 unsigned int acl_num;
130 unsigned int sco_num;
131 unsigned int iso_num;
132 unsigned int le_num;
133 unsigned int le_num_peripheral;
134 };
135
136 struct bdaddr_list {
137 struct list_head list;
138 bdaddr_t bdaddr;
139 u8 bdaddr_type;
140 };
141
142 struct codec_list {
143 struct list_head list;
144 u8 id;
145 __u16 cid;
146 __u16 vid;
147 u8 transport;
148 u8 num_caps;
149 u32 len;
150 struct hci_codec_caps caps[];
151 };
152
153 struct bdaddr_list_with_irk {
154 struct list_head list;
155 bdaddr_t bdaddr;
156 u8 bdaddr_type;
157 u8 peer_irk[16];
158 u8 local_irk[16];
159 };
160
161 /* Bitmask of connection flags */
162 enum hci_conn_flags {
163 HCI_CONN_FLAG_REMOTE_WAKEUP = 1,
164 HCI_CONN_FLAG_DEVICE_PRIVACY = 2,
165 };
166 typedef u8 hci_conn_flags_t;
167
168 struct bdaddr_list_with_flags {
169 struct list_head list;
170 bdaddr_t bdaddr;
171 u8 bdaddr_type;
172 hci_conn_flags_t flags;
173 };
174
175 struct bt_uuid {
176 struct list_head list;
177 u8 uuid[16];
178 u8 size;
179 u8 svc_hint;
180 };
181
182 struct blocked_key {
183 struct list_head list;
184 struct rcu_head rcu;
185 u8 type;
186 u8 val[16];
187 };
188
189 struct smp_csrk {
190 bdaddr_t bdaddr;
191 u8 bdaddr_type;
192 u8 type;
193 u8 val[16];
194 };
195
196 struct smp_ltk {
197 struct list_head list;
198 struct rcu_head rcu;
199 bdaddr_t bdaddr;
200 u8 bdaddr_type;
201 u8 authenticated;
202 u8 type;
203 u8 enc_size;
204 __le16 ediv;
205 __le64 rand;
206 u8 val[16];
207 };
208
209 struct smp_irk {
210 struct list_head list;
211 struct rcu_head rcu;
212 bdaddr_t rpa;
213 bdaddr_t bdaddr;
214 u8 addr_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 type;
223 u8 val[HCI_LINK_KEY_SIZE];
224 u8 pin_len;
225 };
226
227 struct oob_data {
228 struct list_head list;
229 bdaddr_t bdaddr;
230 u8 bdaddr_type;
231 u8 present;
232 u8 hash192[16];
233 u8 rand192[16];
234 u8 hash256[16];
235 u8 rand256[16];
236 };
237
238 struct adv_info {
239 struct list_head list;
240 bool enabled;
241 bool pending;
242 bool periodic;
243 __u8 mesh;
244 __u8 instance;
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
265 #define HCI_MAX_ADV_INSTANCES 5
266 #define HCI_DEFAULT_ADV_DURATION 2
267
268 #define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F
269
270 #define DATA_CMP(_d1, _l1, _d2, _l2) \
271 (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2)
272
273 #define ADV_DATA_CMP(_adv, _data, _len) \
274 DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len)
275
276 #define SCAN_RSP_CMP(_adv, _data, _len) \
277 DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len)
278
279 struct monitored_device {
280 struct list_head list;
281
282 bdaddr_t bdaddr;
283 __u8 addr_type;
284 __u16 handle;
285 bool notified;
286 };
287
288 struct adv_pattern {
289 struct list_head list;
290 __u8 ad_type;
291 __u8 offset;
292 __u8 length;
293 __u8 value[HCI_MAX_EXT_AD_LENGTH];
294 };
295
296 struct adv_rssi_thresholds {
297 __s8 low_threshold;
298 __s8 high_threshold;
299 __u16 low_threshold_timeout;
300 __u16 high_threshold_timeout;
301 __u8 sampling_period;
302 };
303
304 struct adv_monitor {
305 struct list_head patterns;
306 struct adv_rssi_thresholds rssi;
307 __u16 handle;
308
309 enum {
310 ADV_MONITOR_STATE_NOT_REGISTERED,
311 ADV_MONITOR_STATE_REGISTERED,
312 ADV_MONITOR_STATE_OFFLOADED
313 } state;
314 };
315
316 #define HCI_MIN_ADV_MONITOR_HANDLE 1
317 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32
318 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16
319 #define HCI_ADV_MONITOR_EXT_NONE 1
320 #define HCI_ADV_MONITOR_EXT_MSFT 2
321
322 #define HCI_MAX_SHORT_NAME_LENGTH 10
323
324 #define HCI_CONN_HANDLE_MAX 0x0eff
325 #define HCI_CONN_HANDLE_UNSET(_handle) (_handle > HCI_CONN_HANDLE_MAX)
326
327 /* Min encryption key size to match with SMP */
328 #define HCI_MIN_ENC_KEY_SIZE 7
329
330 /* Default LE RPA expiry time, 15 minutes */
331 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
332
333 /* Default min/max age of connection information (1s/3s) */
334 #define DEFAULT_CONN_INFO_MIN_AGE 1000
335 #define DEFAULT_CONN_INFO_MAX_AGE 3000
336 /* Default authenticated payload timeout 30s */
337 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8
338
339 #define HCI_MAX_PAGES 3
340
341 struct hci_dev {
342 struct list_head list;
343 struct srcu_struct srcu;
344 struct mutex lock;
345
346 struct ida unset_handle_ida;
347
348 const char *name;
349 unsigned long flags;
350 __u16 id;
351 __u8 bus;
352 bdaddr_t bdaddr;
353 bdaddr_t setup_addr;
354 bdaddr_t public_addr;
355 bdaddr_t random_addr;
356 bdaddr_t static_addr;
357 __u8 adv_addr_type;
358 __u8 dev_name[HCI_MAX_NAME_LENGTH];
359 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
360 __u8 eir[HCI_MAX_EIR_LENGTH];
361 __u16 appearance;
362 __u8 dev_class[3];
363 __u8 major_class;
364 __u8 minor_class;
365 __u8 max_page;
366 __u8 features[HCI_MAX_PAGES][8];
367 __u8 le_features[8];
368 __u8 le_accept_list_size;
369 __u8 le_resolv_list_size;
370 __u8 le_num_of_adv_sets;
371 __u8 le_states[8];
372 __u8 mesh_ad_types[16];
373 __u8 mesh_send_ref;
374 __u8 commands[64];
375 __u8 hci_ver;
376 __u16 hci_rev;
377 __u8 lmp_ver;
378 __u16 manufacturer;
379 __u16 lmp_subver;
380 __u16 voice_setting;
381 __u8 num_iac;
382 __u16 stored_max_keys;
383 __u16 stored_num_keys;
384 __u8 io_capability;
385 __s8 inq_tx_power;
386 __u8 err_data_reporting;
387 __u16 page_scan_interval;
388 __u16 page_scan_window;
389 __u8 page_scan_type;
390 __u8 le_adv_channel_map;
391 __u16 le_adv_min_interval;
392 __u16 le_adv_max_interval;
393 __u8 le_scan_type;
394 __u16 le_scan_interval;
395 __u16 le_scan_window;
396 __u16 le_scan_int_suspend;
397 __u16 le_scan_window_suspend;
398 __u16 le_scan_int_discovery;
399 __u16 le_scan_window_discovery;
400 __u16 le_scan_int_adv_monitor;
401 __u16 le_scan_window_adv_monitor;
402 __u16 le_scan_int_connect;
403 __u16 le_scan_window_connect;
404 __u16 le_conn_min_interval;
405 __u16 le_conn_max_interval;
406 __u16 le_conn_latency;
407 __u16 le_supv_timeout;
408 __u16 le_def_tx_len;
409 __u16 le_def_tx_time;
410 __u16 le_max_tx_len;
411 __u16 le_max_tx_time;
412 __u16 le_max_rx_len;
413 __u16 le_max_rx_time;
414 __u8 le_max_key_size;
415 __u8 le_min_key_size;
416 __u16 discov_interleaved_timeout;
417 __u16 conn_info_min_age;
418 __u16 conn_info_max_age;
419 __u16 auth_payload_timeout;
420 __u8 min_enc_key_size;
421 __u8 max_enc_key_size;
422 __u8 pairing_opts;
423 __u8 ssp_debug_mode;
424 __u8 hw_error_code;
425 __u32 clock;
426 __u16 advmon_allowlist_duration;
427 __u16 advmon_no_filter_duration;
428 __u8 enable_advmon_interleave_scan;
429
430 __u16 devid_source;
431 __u16 devid_vendor;
432 __u16 devid_product;
433 __u16 devid_version;
434
435 __u8 def_page_scan_type;
436 __u16 def_page_scan_int;
437 __u16 def_page_scan_window;
438 __u8 def_inq_scan_type;
439 __u16 def_inq_scan_int;
440 __u16 def_inq_scan_window;
441 __u16 def_br_lsto;
442 __u16 def_page_timeout;
443 __u16 def_multi_adv_rotation_duration;
444 __u16 def_le_autoconnect_timeout;
445 __s8 min_le_tx_power;
446 __s8 max_le_tx_power;
447
448 __u16 pkt_type;
449 __u16 esco_type;
450 __u16 link_policy;
451 __u16 link_mode;
452
453 __u32 idle_timeout;
454 __u16 sniff_min_interval;
455 __u16 sniff_max_interval;
456
457 unsigned int auto_accept_delay;
458
459 unsigned long quirks;
460
461 atomic_t cmd_cnt;
462 unsigned int acl_cnt;
463 unsigned int sco_cnt;
464 unsigned int le_cnt;
465 unsigned int iso_cnt;
466
467 unsigned int acl_mtu;
468 unsigned int sco_mtu;
469 unsigned int le_mtu;
470 unsigned int iso_mtu;
471 unsigned int acl_pkts;
472 unsigned int sco_pkts;
473 unsigned int le_pkts;
474 unsigned int iso_pkts;
475
476 unsigned long acl_last_tx;
477 unsigned long sco_last_tx;
478 unsigned long le_last_tx;
479
480 __u8 le_tx_def_phys;
481 __u8 le_rx_def_phys;
482
483 struct workqueue_struct *workqueue;
484 struct workqueue_struct *req_workqueue;
485
486 struct work_struct power_on;
487 struct delayed_work power_off;
488 struct work_struct error_reset;
489 struct work_struct cmd_sync_work;
490 struct list_head cmd_sync_work_list;
491 struct mutex cmd_sync_work_lock;
492 struct mutex unregister_lock;
493 struct work_struct cmd_sync_cancel_work;
494 struct work_struct reenable_adv_work;
495
496 __u16 discov_timeout;
497 struct delayed_work discov_off;
498
499 struct delayed_work service_cache;
500
501 struct delayed_work cmd_timer;
502 struct delayed_work ncmd_timer;
503
504 struct work_struct rx_work;
505 struct work_struct cmd_work;
506 struct work_struct tx_work;
507
508 struct delayed_work le_scan_disable;
509 struct delayed_work le_scan_restart;
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 int discovery_old_state;
531 bool discovery_paused;
532 int advertising_old_state;
533 bool advertising_paused;
534
535 struct notifier_block suspend_notifier;
536 enum suspended_state suspend_state_next;
537 enum suspended_state suspend_state;
538 bool scanning_paused;
539 bool suspended;
540 u8 wake_reason;
541 bdaddr_t wake_addr;
542 u8 wake_addr_type;
543
544 struct hci_conn_hash conn_hash;
545
546 struct list_head mesh_pending;
547 struct mutex mgmt_pending_lock;
548 struct list_head mgmt_pending;
549 struct list_head reject_list;
550 struct list_head accept_list;
551 struct list_head uuids;
552 struct list_head link_keys;
553 struct list_head long_term_keys;
554 struct list_head identity_resolving_keys;
555 struct list_head remote_oob_data;
556 struct list_head le_accept_list;
557 struct list_head le_resolv_list;
558 struct list_head le_conn_params;
559 struct list_head pend_le_conns;
560 struct list_head pend_le_reports;
561 struct list_head blocked_keys;
562 struct list_head local_codecs;
563
564 struct hci_dev_stats stat;
565
566 atomic_t promisc;
567
568 const char *hw_info;
569 const char *fw_info;
570 struct dentry *debugfs;
571
572 struct hci_devcoredump dump;
573
574 struct device dev;
575
576 struct rfkill *rfkill;
577
578 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
579 hci_conn_flags_t conn_flags;
580
581 __s8 adv_tx_power;
582 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
583 __u8 adv_data_len;
584 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
585 __u8 scan_rsp_data_len;
586 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
587 __u8 per_adv_data_len;
588
589 struct list_head adv_instances;
590 unsigned int adv_instance_cnt;
591 __u8 cur_adv_instance;
592 __u16 adv_instance_timeout;
593 struct delayed_work adv_instance_expire;
594
595 struct idr adv_monitors_idr;
596 unsigned int adv_monitors_cnt;
597
598 __u8 irk[16];
599 __u32 rpa_timeout;
600 struct delayed_work rpa_expired;
601 bdaddr_t rpa;
602
603 struct delayed_work mesh_send_done;
604
605 enum {
606 INTERLEAVE_SCAN_NONE,
607 INTERLEAVE_SCAN_NO_FILTER,
608 INTERLEAVE_SCAN_ALLOWLIST
609 } interleave_scan_state;
610
611 struct delayed_work interleave_scan;
612
613 struct list_head monitored_devices;
614 bool advmon_pend_notify;
615
616 #if IS_ENABLED(CONFIG_BT_LEDS)
617 struct led_trigger *power_led;
618 #endif
619
620 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
621 __u16 msft_opcode;
622 void *msft_data;
623 bool msft_curve_validity;
624 #endif
625
626 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
627 bool aosp_capable;
628 bool aosp_quality_report;
629 #endif
630
631 int (*open)(struct hci_dev *hdev);
632 int (*close)(struct hci_dev *hdev);
633 int (*flush)(struct hci_dev *hdev);
634 int (*setup)(struct hci_dev *hdev);
635 int (*shutdown)(struct hci_dev *hdev);
636 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
637 void (*notify)(struct hci_dev *hdev, unsigned int evt);
638 void (*hw_error)(struct hci_dev *hdev, u8 code);
639 int (*post_init)(struct hci_dev *hdev);
640 int (*set_diag)(struct hci_dev *hdev, bool enable);
641 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
642 void (*cmd_timeout)(struct hci_dev *hdev);
643 void (*reset)(struct hci_dev *hdev);
644 bool (*wakeup)(struct hci_dev *hdev);
645 int (*set_quality_report)(struct hci_dev *hdev, bool enable);
646 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path);
647 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type,
648 struct bt_codec *codec, __u8 *vnd_len,
649 __u8 **vnd_data);
650 };
651
652 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
653
654 enum conn_reasons {
655 CONN_REASON_PAIR_DEVICE,
656 CONN_REASON_L2CAP_CHAN,
657 CONN_REASON_SCO_CONNECT,
658 CONN_REASON_ISO_CONNECT,
659 };
660
661 struct hci_conn {
662 struct list_head list;
663
664 atomic_t refcnt;
665
666 bdaddr_t dst;
667 __u8 dst_type;
668 bdaddr_t src;
669 __u8 src_type;
670 bdaddr_t init_addr;
671 __u8 init_addr_type;
672 bdaddr_t resp_addr;
673 __u8 resp_addr_type;
674 __u8 adv_instance;
675 __u16 handle;
676 __u16 sync_handle;
677 __u16 state;
678 __u16 mtu;
679 __u8 mode;
680 __u8 type;
681 __u8 role;
682 bool out;
683 __u8 attempt;
684 __u8 dev_class[3];
685 __u8 features[HCI_MAX_PAGES][8];
686 __u16 pkt_type;
687 __u16 link_policy;
688 __u8 key_type;
689 __u8 auth_type;
690 __u8 sec_level;
691 __u8 pending_sec_level;
692 __u8 pin_length;
693 __u8 enc_key_size;
694 __u8 io_capability;
695 __u32 passkey_notify;
696 __u8 passkey_entered;
697 __u16 disc_timeout;
698 __u16 conn_timeout;
699 __u16 setting;
700 __u16 auth_payload_timeout;
701 __u16 le_conn_min_interval;
702 __u16 le_conn_max_interval;
703 __u16 le_conn_interval;
704 __u16 le_conn_latency;
705 __u16 le_supv_timeout;
706 __u8 le_adv_data[HCI_MAX_EXT_AD_LENGTH];
707 __u8 le_adv_data_len;
708 __u8 le_per_adv_data[HCI_MAX_PER_AD_LENGTH];
709 __u8 le_per_adv_data_len;
710 __u8 le_tx_phy;
711 __u8 le_rx_phy;
712 __s8 rssi;
713 __s8 tx_power;
714 __s8 max_tx_power;
715 struct bt_iso_qos iso_qos;
716 unsigned long flags;
717
718 enum conn_reasons conn_reason;
719 __u8 abort_reason;
720
721 __u32 clock;
722 __u16 clock_accuracy;
723
724 unsigned long conn_info_timestamp;
725
726 __u8 remote_cap;
727 __u8 remote_auth;
728 __u8 remote_id;
729
730 unsigned int sent;
731
732 struct sk_buff_head data_q;
733 struct list_head chan_list;
734
735 struct delayed_work disc_work;
736 struct delayed_work auto_accept_work;
737 struct delayed_work idle_work;
738 struct delayed_work le_conn_timeout;
739
740 struct device dev;
741 struct dentry *debugfs;
742
743 struct hci_dev *hdev;
744 void *l2cap_data;
745 void *sco_data;
746 void *iso_data;
747
748 struct list_head link_list;
749 struct hci_conn *parent;
750 struct hci_link *link;
751
752 struct bt_codec codec;
753
754 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
755 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
756 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
757
758 void (*cleanup)(struct hci_conn *conn);
759 };
760
761 struct hci_link {
762 struct list_head list;
763 struct hci_conn *conn;
764 };
765
766 struct hci_chan {
767 struct list_head list;
768 __u16 handle;
769 struct hci_conn *conn;
770 struct sk_buff_head data_q;
771 unsigned int sent;
772 __u8 state;
773 };
774
775 struct hci_conn_params {
776 struct list_head list;
777 struct list_head action;
778
779 bdaddr_t addr;
780 u8 addr_type;
781
782 u16 conn_min_interval;
783 u16 conn_max_interval;
784 u16 conn_latency;
785 u16 supervision_timeout;
786
787 enum {
788 HCI_AUTO_CONN_DISABLED,
789 HCI_AUTO_CONN_REPORT,
790 HCI_AUTO_CONN_DIRECT,
791 HCI_AUTO_CONN_ALWAYS,
792 HCI_AUTO_CONN_LINK_LOSS,
793 HCI_AUTO_CONN_EXPLICIT,
794 } auto_connect;
795
796 struct hci_conn *conn;
797 bool explicit_connect;
798 /* Accessed without hdev->lock: */
799 hci_conn_flags_t flags;
800 u8 privacy_mode;
801 };
802
803 extern struct list_head hci_dev_list;
804 extern struct list_head hci_cb_list;
805 extern rwlock_t hci_dev_list_lock;
806 extern struct mutex hci_cb_list_lock;
807
808 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
809 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
810 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
811 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
812 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
813 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
814 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
815
816 #define hci_dev_clear_volatile_flags(hdev) \
817 do { \
818 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
819 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
820 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
821 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
822 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \
823 } while (0)
824
825 #define hci_dev_le_state_simultaneous(hdev) \
826 (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \
827 (hdev->le_states[4] & 0x08) && /* Central */ \
828 (hdev->le_states[4] & 0x40) && /* Peripheral */ \
829 (hdev->le_states[3] & 0x10)) /* Simultaneous */
830
831 /* ----- HCI interface to upper protocols ----- */
832 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
833 int l2cap_disconn_ind(struct hci_conn *hcon);
834 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
835
836 #if IS_ENABLED(CONFIG_BT_BREDR)
837 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
838 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
839 #else
sco_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 * flags)840 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
841 __u8 *flags)
842 {
843 return 0;
844 }
845
sco_recv_scodata(struct hci_conn * hcon,struct sk_buff * skb)846 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
847 {
848 }
849 #endif
850
851 #if IS_ENABLED(CONFIG_BT_LE)
852 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
853 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
854 #else
iso_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 * flags)855 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
856 __u8 *flags)
857 {
858 return 0;
859 }
iso_recv(struct hci_conn * hcon,struct sk_buff * skb,u16 flags)860 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb,
861 u16 flags)
862 {
863 }
864 #endif
865
866 /* ----- Inquiry cache ----- */
867 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
868 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
869
discovery_init(struct hci_dev * hdev)870 static inline void discovery_init(struct hci_dev *hdev)
871 {
872 hdev->discovery.state = DISCOVERY_STOPPED;
873 INIT_LIST_HEAD(&hdev->discovery.all);
874 INIT_LIST_HEAD(&hdev->discovery.unknown);
875 INIT_LIST_HEAD(&hdev->discovery.resolve);
876 hdev->discovery.report_invalid_rssi = true;
877 hdev->discovery.rssi = HCI_RSSI_INVALID;
878 }
879
hci_discovery_filter_clear(struct hci_dev * hdev)880 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
881 {
882 hdev->discovery.result_filtering = false;
883 hdev->discovery.report_invalid_rssi = true;
884 hdev->discovery.rssi = HCI_RSSI_INVALID;
885 hdev->discovery.uuid_count = 0;
886 kfree(hdev->discovery.uuids);
887 hdev->discovery.uuids = NULL;
888 hdev->discovery.scan_start = 0;
889 hdev->discovery.scan_duration = 0;
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
inquiry_cache_empty(struct hci_dev * hdev)896 static inline int inquiry_cache_empty(struct hci_dev *hdev)
897 {
898 return list_empty(&hdev->discovery.all);
899 }
900
inquiry_cache_age(struct hci_dev * hdev)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
inquiry_entry_age(struct inquiry_entry * e)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
hci_conn_ssp_enabled(struct hci_conn * conn)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
hci_conn_sc_enabled(struct hci_conn * conn)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
hci_conn_hash_add(struct hci_dev * hdev,struct hci_conn * c)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
hci_conn_hash_del(struct hci_dev * hdev,struct hci_conn * c)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
hci_conn_num(struct hci_dev * hdev,__u8 type)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
hci_conn_count(struct hci_dev * hdev)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
hci_conn_valid(struct hci_dev * hdev,struct hci_conn * conn)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
hci_conn_lookup_type(struct hci_dev * hdev,__u16 handle)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
hci_conn_hash_lookup_bis(struct hci_dev * hdev,bdaddr_t * ba,__u8 bis)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 *
hci_conn_hash_lookup_per_adv_bis(struct hci_dev * hdev,bdaddr_t * ba,__u8 big,__u8 bis)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
hci_conn_hash_lookup_handle(struct hci_dev * hdev,__u16 handle)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
hci_conn_hash_lookup_ba(struct hci_dev * hdev,__u8 type,bdaddr_t * ba)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
hci_conn_hash_lookup_le(struct hci_dev * hdev,bdaddr_t * ba,__u8 ba_type)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
hci_conn_hash_lookup_cis(struct hci_dev * hdev,bdaddr_t * ba,__u8 ba_type,__u8 cig,__u8 id)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
hci_conn_hash_lookup_cig(struct hci_dev * hdev,__u8 handle)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
hci_conn_hash_lookup_big(struct hci_dev * hdev,__u8 handle)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
hci_conn_hash_lookup_big_any_dst(struct hci_dev * hdev,__u8 handle)1277 static inline struct hci_conn *hci_conn_hash_lookup_big_any_dst(struct hci_dev *hdev,
1278 __u8 handle)
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 (c->type != ISO_LINK)
1287 continue;
1288
1289 if (handle != BT_ISO_QOS_BIG_UNSET && handle == c->iso_qos.bcast.big) {
1290 rcu_read_unlock();
1291 return c;
1292 }
1293 }
1294
1295 rcu_read_unlock();
1296
1297 return NULL;
1298 }
1299
1300 static inline struct hci_conn *
hci_conn_hash_lookup_big_state(struct hci_dev * hdev,__u8 handle,__u16 state)1301 hci_conn_hash_lookup_big_state(struct hci_dev *hdev, __u8 handle, __u16 state)
1302 {
1303 struct hci_conn_hash *h = &hdev->conn_hash;
1304 struct hci_conn *c;
1305
1306 rcu_read_lock();
1307
1308 list_for_each_entry_rcu(c, &h->list, list) {
1309 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK ||
1310 c->state != state)
1311 continue;
1312
1313 if (handle == c->iso_qos.bcast.big) {
1314 rcu_read_unlock();
1315 return c;
1316 }
1317 }
1318
1319 rcu_read_unlock();
1320
1321 return NULL;
1322 }
1323
1324 static inline struct hci_conn *
hci_conn_hash_lookup_pa_sync_big_handle(struct hci_dev * hdev,__u8 big)1325 hci_conn_hash_lookup_pa_sync_big_handle(struct hci_dev *hdev, __u8 big)
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 !test_bit(HCI_CONN_PA_SYNC, &c->flags))
1335 continue;
1336
1337 if (c->iso_qos.bcast.big == big) {
1338 rcu_read_unlock();
1339 return c;
1340 }
1341 }
1342 rcu_read_unlock();
1343
1344 return NULL;
1345 }
1346
1347 static inline struct hci_conn *
hci_conn_hash_lookup_pa_sync_handle(struct hci_dev * hdev,__u16 sync_handle)1348 hci_conn_hash_lookup_pa_sync_handle(struct hci_dev *hdev, __u16 sync_handle)
1349 {
1350 struct hci_conn_hash *h = &hdev->conn_hash;
1351 struct hci_conn *c;
1352
1353 rcu_read_lock();
1354
1355 list_for_each_entry_rcu(c, &h->list, list) {
1356 if (c->type != ISO_LINK ||
1357 !test_bit(HCI_CONN_PA_SYNC, &c->flags))
1358 continue;
1359
1360 if (c->sync_handle == sync_handle) {
1361 rcu_read_unlock();
1362 return c;
1363 }
1364 }
1365 rcu_read_unlock();
1366
1367 return NULL;
1368 }
1369
hci_conn_hash_lookup_state(struct hci_dev * hdev,__u8 type,__u16 state)1370 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1371 __u8 type, __u16 state)
1372 {
1373 struct hci_conn_hash *h = &hdev->conn_hash;
1374 struct hci_conn *c;
1375
1376 rcu_read_lock();
1377
1378 list_for_each_entry_rcu(c, &h->list, list) {
1379 if (c->type == type && c->state == state) {
1380 rcu_read_unlock();
1381 return c;
1382 }
1383 }
1384
1385 rcu_read_unlock();
1386
1387 return NULL;
1388 }
1389
1390 typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data);
hci_conn_hash_list_state(struct hci_dev * hdev,hci_conn_func_t func,__u8 type,__u16 state,void * data)1391 static inline void hci_conn_hash_list_state(struct hci_dev *hdev,
1392 hci_conn_func_t func, __u8 type,
1393 __u16 state, void *data)
1394 {
1395 struct hci_conn_hash *h = &hdev->conn_hash;
1396 struct hci_conn *c;
1397
1398 if (!func)
1399 return;
1400
1401 rcu_read_lock();
1402
1403 list_for_each_entry_rcu(c, &h->list, list) {
1404 if (c->type == type && c->state == state)
1405 func(c, data);
1406 }
1407
1408 rcu_read_unlock();
1409 }
1410
hci_lookup_le_connect(struct hci_dev * hdev)1411 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1412 {
1413 struct hci_conn_hash *h = &hdev->conn_hash;
1414 struct hci_conn *c;
1415
1416 rcu_read_lock();
1417
1418 list_for_each_entry_rcu(c, &h->list, list) {
1419 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1420 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1421 rcu_read_unlock();
1422 return c;
1423 }
1424 }
1425
1426 rcu_read_unlock();
1427
1428 return NULL;
1429 }
1430
1431 /* Returns true if an le connection is in the scanning state */
hci_is_le_conn_scanning(struct hci_dev * hdev)1432 static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev)
1433 {
1434 struct hci_conn_hash *h = &hdev->conn_hash;
1435 struct hci_conn *c;
1436
1437 rcu_read_lock();
1438
1439 list_for_each_entry_rcu(c, &h->list, list) {
1440 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1441 test_bit(HCI_CONN_SCANNING, &c->flags)) {
1442 rcu_read_unlock();
1443 return true;
1444 }
1445 }
1446
1447 rcu_read_unlock();
1448
1449 return false;
1450 }
1451
1452 int hci_disconnect(struct hci_conn *conn, __u8 reason);
1453 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1454 void hci_sco_setup(struct hci_conn *conn, __u8 status);
1455 bool hci_iso_setup_path(struct hci_conn *conn);
1456 int hci_le_create_cis_pending(struct hci_dev *hdev);
1457 int hci_conn_check_create_cis(struct hci_conn *conn);
1458
1459 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1460 u8 role, u16 handle);
1461 struct hci_conn *hci_conn_add_unset(struct hci_dev *hdev, int type,
1462 bdaddr_t *dst, u8 role);
1463 void hci_conn_del(struct hci_conn *conn);
1464 void hci_conn_hash_flush(struct hci_dev *hdev);
1465
1466 struct hci_chan *hci_chan_create(struct hci_conn *conn);
1467 void hci_chan_del(struct hci_chan *chan);
1468 void hci_chan_list_flush(struct hci_conn *conn);
1469 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1470
1471 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1472 u8 dst_type, u8 sec_level,
1473 u16 conn_timeout,
1474 enum conn_reasons conn_reason);
1475 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1476 u8 dst_type, bool dst_resolved, u8 sec_level,
1477 u16 conn_timeout, u8 role);
1478 void hci_connect_le_scan_cleanup(struct hci_conn *conn, u8 status);
1479 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1480 u8 sec_level, u8 auth_type,
1481 enum conn_reasons conn_reason);
1482 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1483 __u16 setting, struct bt_codec *codec);
1484 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
1485 __u8 dst_type, struct bt_iso_qos *qos);
1486 struct hci_conn *hci_bind_bis(struct hci_dev *hdev, bdaddr_t *dst,
1487 struct bt_iso_qos *qos,
1488 __u8 base_len, __u8 *base);
1489 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
1490 __u8 dst_type, struct bt_iso_qos *qos);
1491 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
1492 __u8 dst_type, struct bt_iso_qos *qos,
1493 __u8 data_len, __u8 *data);
1494 int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type,
1495 __u8 sid, struct bt_iso_qos *qos);
1496 int hci_le_big_create_sync(struct hci_dev *hdev, struct hci_conn *hcon,
1497 struct bt_iso_qos *qos,
1498 __u16 sync_handle, __u8 num_bis, __u8 bis[]);
1499 int hci_conn_check_link_mode(struct hci_conn *conn);
1500 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1501 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1502 bool initiator);
1503 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1504
1505 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1506
1507 void hci_conn_failed(struct hci_conn *conn, u8 status);
1508 u8 hci_conn_set_handle(struct hci_conn *conn, u16 handle);
1509
1510 /*
1511 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1512 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1513 * working or anything else. They just guarantee that the object is available
1514 * and can be dereferenced. So you can use its locks, local variables and any
1515 * other constant data.
1516 * Before accessing runtime data, you _must_ lock the object and then check that
1517 * it is still running. As soon as you release the locks, the connection might
1518 * get dropped, though.
1519 *
1520 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1521 * how long the underlying connection is held. So every channel that runs on the
1522 * hci_conn object calls this to prevent the connection from disappearing. As
1523 * long as you hold a device, you must also guarantee that you have a valid
1524 * reference to the device via hci_conn_get() (or the initial reference from
1525 * hci_conn_add()).
1526 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1527 * break because nobody cares for that. But this means, we cannot use
1528 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1529 */
1530
hci_conn_get(struct hci_conn * conn)1531 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1532 {
1533 get_device(&conn->dev);
1534 return conn;
1535 }
1536
hci_conn_put(struct hci_conn * conn)1537 static inline void hci_conn_put(struct hci_conn *conn)
1538 {
1539 put_device(&conn->dev);
1540 }
1541
hci_conn_hold(struct hci_conn * conn)1542 static inline struct hci_conn *hci_conn_hold(struct hci_conn *conn)
1543 {
1544 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1545
1546 atomic_inc(&conn->refcnt);
1547 cancel_delayed_work(&conn->disc_work);
1548
1549 return conn;
1550 }
1551
hci_conn_drop(struct hci_conn * conn)1552 static inline void hci_conn_drop(struct hci_conn *conn)
1553 {
1554 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1555
1556 if (atomic_dec_and_test(&conn->refcnt)) {
1557 unsigned long timeo;
1558
1559 switch (conn->type) {
1560 case ACL_LINK:
1561 case LE_LINK:
1562 cancel_delayed_work(&conn->idle_work);
1563 if (conn->state == BT_CONNECTED) {
1564 timeo = conn->disc_timeout;
1565 if (!conn->out)
1566 timeo *= 2;
1567 } else {
1568 timeo = 0;
1569 }
1570 break;
1571
1572 default:
1573 timeo = 0;
1574 break;
1575 }
1576
1577 cancel_delayed_work(&conn->disc_work);
1578 queue_delayed_work(conn->hdev->workqueue,
1579 &conn->disc_work, timeo);
1580 }
1581 }
1582
1583 /* ----- HCI Devices ----- */
hci_dev_put(struct hci_dev * d)1584 static inline void hci_dev_put(struct hci_dev *d)
1585 {
1586 BT_DBG("%s orig refcnt %d", d->name,
1587 kref_read(&d->dev.kobj.kref));
1588
1589 put_device(&d->dev);
1590 }
1591
hci_dev_hold(struct hci_dev * d)1592 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1593 {
1594 BT_DBG("%s orig refcnt %d", d->name,
1595 kref_read(&d->dev.kobj.kref));
1596
1597 get_device(&d->dev);
1598 return d;
1599 }
1600
1601 #define hci_dev_lock(d) mutex_lock(&d->lock)
1602 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
1603
1604 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1605 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1606
hci_get_drvdata(struct hci_dev * hdev)1607 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1608 {
1609 return dev_get_drvdata(&hdev->dev);
1610 }
1611
hci_set_drvdata(struct hci_dev * hdev,void * data)1612 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1613 {
1614 dev_set_drvdata(&hdev->dev, data);
1615 }
1616
hci_get_priv(struct hci_dev * hdev)1617 static inline void *hci_get_priv(struct hci_dev *hdev)
1618 {
1619 return (char *)hdev + sizeof(*hdev);
1620 }
1621
1622 struct hci_dev *hci_dev_get(int index);
1623 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1624
1625 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);
1626
hci_alloc_dev(void)1627 static inline struct hci_dev *hci_alloc_dev(void)
1628 {
1629 return hci_alloc_dev_priv(0);
1630 }
1631
1632 void hci_free_dev(struct hci_dev *hdev);
1633 int hci_register_dev(struct hci_dev *hdev);
1634 void hci_unregister_dev(struct hci_dev *hdev);
1635 void hci_release_dev(struct hci_dev *hdev);
1636 int hci_register_suspend_notifier(struct hci_dev *hdev);
1637 int hci_unregister_suspend_notifier(struct hci_dev *hdev);
1638 int hci_suspend_dev(struct hci_dev *hdev);
1639 int hci_resume_dev(struct hci_dev *hdev);
1640 int hci_reset_dev(struct hci_dev *hdev);
1641 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1642 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1643 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1644 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1645
hci_set_msft_opcode(struct hci_dev * hdev,__u16 opcode)1646 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1647 {
1648 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
1649 hdev->msft_opcode = opcode;
1650 #endif
1651 }
1652
hci_set_aosp_capable(struct hci_dev * hdev)1653 static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1654 {
1655 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
1656 hdev->aosp_capable = true;
1657 #endif
1658 }
1659
hci_devcd_setup(struct hci_dev * hdev)1660 static inline void hci_devcd_setup(struct hci_dev *hdev)
1661 {
1662 #ifdef CONFIG_DEV_COREDUMP
1663 INIT_WORK(&hdev->dump.dump_rx, hci_devcd_rx);
1664 INIT_DELAYED_WORK(&hdev->dump.dump_timeout, hci_devcd_timeout);
1665 skb_queue_head_init(&hdev->dump.dump_q);
1666 #endif
1667 }
1668
1669 int hci_dev_open(__u16 dev);
1670 int hci_dev_close(__u16 dev);
1671 int hci_dev_do_close(struct hci_dev *hdev);
1672 int hci_dev_reset(__u16 dev);
1673 int hci_dev_reset_stat(__u16 dev);
1674 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1675 int hci_get_dev_list(void __user *arg);
1676 int hci_get_dev_info(void __user *arg);
1677 int hci_get_conn_list(void __user *arg);
1678 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1679 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1680 int hci_inquiry(void __user *arg);
1681
1682 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1683 bdaddr_t *bdaddr, u8 type);
1684 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1685 struct list_head *list, bdaddr_t *bdaddr,
1686 u8 type);
1687 struct bdaddr_list_with_flags *
1688 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1689 u8 type);
1690 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1691 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1692 u8 type, u8 *peer_irk, u8 *local_irk);
1693 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1694 u8 type, u32 flags);
1695 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1696 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1697 u8 type);
1698 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1699 u8 type);
1700 void hci_bdaddr_list_clear(struct list_head *list);
1701
1702 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1703 bdaddr_t *addr, u8 addr_type);
1704 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1705 bdaddr_t *addr, u8 addr_type);
1706 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1707 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1708 void hci_conn_params_free(struct hci_conn_params *param);
1709
1710 void hci_pend_le_list_del_init(struct hci_conn_params *param);
1711 void hci_pend_le_list_add(struct hci_conn_params *param,
1712 struct list_head *list);
1713 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1714 bdaddr_t *addr,
1715 u8 addr_type);
1716
1717 void hci_uuids_clear(struct hci_dev *hdev);
1718
1719 void hci_link_keys_clear(struct hci_dev *hdev);
1720 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1721 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1722 bdaddr_t *bdaddr, u8 *val, u8 type,
1723 u8 pin_len, bool *persistent);
1724 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1725 u8 addr_type, u8 type, u8 authenticated,
1726 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1727 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1728 u8 addr_type, u8 role);
1729 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1730 void hci_smp_ltks_clear(struct hci_dev *hdev);
1731 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1732
1733 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1734 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1735 u8 addr_type);
1736 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1737 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1738 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1739 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1740 void hci_blocked_keys_clear(struct hci_dev *hdev);
1741 void hci_smp_irks_clear(struct hci_dev *hdev);
1742
1743 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1744
1745 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1746 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1747 bdaddr_t *bdaddr, u8 bdaddr_type);
1748 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1749 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1750 u8 *hash256, u8 *rand256);
1751 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1752 u8 bdaddr_type);
1753
1754 void hci_adv_instances_clear(struct hci_dev *hdev);
1755 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1756 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1757 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance,
1758 u32 flags, u16 adv_data_len, u8 *adv_data,
1759 u16 scan_rsp_len, u8 *scan_rsp_data,
1760 u16 timeout, u16 duration, s8 tx_power,
1761 u32 min_interval, u32 max_interval,
1762 u8 mesh_handle);
1763 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance,
1764 u32 flags, u8 data_len, u8 *data,
1765 u32 min_interval, u32 max_interval);
1766 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1767 u16 adv_data_len, u8 *adv_data,
1768 u16 scan_rsp_len, u8 *scan_rsp_data);
1769 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1770 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1771 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance);
1772 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance);
1773
1774 void hci_adv_monitors_clear(struct hci_dev *hdev);
1775 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1776 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1777 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle);
1778 int hci_remove_all_adv_monitor(struct hci_dev *hdev);
1779 bool hci_is_adv_monitoring(struct hci_dev *hdev);
1780 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1781
1782 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1783
1784 void hci_init_sysfs(struct hci_dev *hdev);
1785 void hci_conn_init_sysfs(struct hci_conn *conn);
1786 void hci_conn_add_sysfs(struct hci_conn *conn);
1787 void hci_conn_del_sysfs(struct hci_conn *conn);
1788
1789 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1790 #define GET_HCIDEV_DEV(hdev) ((hdev)->dev.parent)
1791
1792 /* ----- LMP capabilities ----- */
1793 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1794 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1795 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1796 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1797 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1798 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1799 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1800 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1801 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1802 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1803 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1804 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1805 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1806 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1807 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1808 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1809 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1810 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1811 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1812 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1813 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1814 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1815 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1816 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1817
1818 /* ----- Extended LMP capabilities ----- */
1819 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1820 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1821 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1822 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1823 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1824 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1825
1826 /* ----- Host capabilities ----- */
1827 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1828 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1829 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1830 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1831
1832 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1833 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1834 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1835 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1836 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \
1837 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED))
1838 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \
1839 !adv->rpa_expired)
1840
1841 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1842 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1843
1844 #define le_2m_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_2M))
1845
1846 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1847 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1848
1849 #define le_coded_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_CODED) && \
1850 !test_bit(HCI_QUIRK_BROKEN_LE_CODED, \
1851 &(dev)->quirks))
1852
1853 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1854 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1855
1856 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1857
1858 /* Use LL Privacy based address resolution if supported */
1859 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \
1860 hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY))
1861
1862 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \
1863 (hdev->commands[39] & 0x04))
1864
1865 #define read_key_size_capable(dev) \
1866 ((dev)->commands[20] & 0x10 && \
1867 !test_bit(HCI_QUIRK_BROKEN_READ_ENC_KEY_SIZE, &hdev->quirks))
1868
1869 /* Use enhanced synchronous connection if command is supported and its quirk
1870 * has not been set.
1871 */
1872 #define enhanced_sync_conn_capable(dev) \
1873 (((dev)->commands[29] & 0x08) && \
1874 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks))
1875
1876 /* Use ext scanning if set ext scan param and ext scan enable is supported */
1877 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1878 ((dev)->commands[37] & 0x40) && \
1879 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks))
1880
1881 /* Use ext create connection if command is supported */
1882 #define use_ext_conn(dev) (((dev)->commands[37] & 0x80) && \
1883 !test_bit(HCI_QUIRK_BROKEN_EXT_CREATE_CONN, &(dev)->quirks))
1884 /* Extended advertising support */
1885 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1886
1887 /* Maximum advertising length */
1888 #define max_adv_len(dev) \
1889 (ext_adv_capable(dev) ? HCI_MAX_EXT_AD_LENGTH : HCI_MAX_AD_LENGTH)
1890
1891 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789:
1892 *
1893 * C24: Mandatory if the LE Controller supports Connection State and either
1894 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported
1895 */
1896 #define use_enhanced_conn_complete(dev) ((ll_privacy_capable(dev) || \
1897 ext_adv_capable(dev)) && \
1898 !test_bit(HCI_QUIRK_BROKEN_EXT_CREATE_CONN, \
1899 &(dev)->quirks))
1900
1901 /* Periodic advertising support */
1902 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV))
1903
1904 /* CIS Master/Slave and BIS support */
1905 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev))
1906 #define cis_capable(dev) \
1907 (cis_central_capable(dev) || cis_peripheral_capable(dev))
1908 #define cis_central_capable(dev) \
1909 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL)
1910 #define cis_peripheral_capable(dev) \
1911 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL)
1912 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER)
1913 #define sync_recv_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_SYNC_RECEIVER)
1914
1915 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \
1916 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks)))
1917
1918 /* ----- HCI protocols ----- */
1919 #define HCI_PROTO_DEFER 0x01
1920
hci_proto_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 type,__u8 * flags)1921 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1922 __u8 type, __u8 *flags)
1923 {
1924 switch (type) {
1925 case ACL_LINK:
1926 return l2cap_connect_ind(hdev, bdaddr);
1927
1928 case SCO_LINK:
1929 case ESCO_LINK:
1930 return sco_connect_ind(hdev, bdaddr, flags);
1931
1932 case ISO_LINK:
1933 return iso_connect_ind(hdev, bdaddr, flags);
1934
1935 default:
1936 BT_ERR("unknown link type %d", type);
1937 return -EINVAL;
1938 }
1939 }
1940
hci_proto_disconn_ind(struct hci_conn * conn)1941 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1942 {
1943 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1944 return HCI_ERROR_REMOTE_USER_TERM;
1945
1946 return l2cap_disconn_ind(conn);
1947 }
1948
1949 /* ----- HCI callbacks ----- */
1950 struct hci_cb {
1951 struct list_head list;
1952
1953 char *name;
1954
1955 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1956 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1957 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1958 __u8 encrypt);
1959 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1960 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1961 };
1962
hci_connect_cfm(struct hci_conn * conn,__u8 status)1963 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1964 {
1965 struct hci_cb *cb;
1966
1967 mutex_lock(&hci_cb_list_lock);
1968 list_for_each_entry(cb, &hci_cb_list, list) {
1969 if (cb->connect_cfm)
1970 cb->connect_cfm(conn, status);
1971 }
1972 mutex_unlock(&hci_cb_list_lock);
1973
1974 if (conn->connect_cfm_cb)
1975 conn->connect_cfm_cb(conn, status);
1976 }
1977
hci_disconn_cfm(struct hci_conn * conn,__u8 reason)1978 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1979 {
1980 struct hci_cb *cb;
1981
1982 mutex_lock(&hci_cb_list_lock);
1983 list_for_each_entry(cb, &hci_cb_list, list) {
1984 if (cb->disconn_cfm)
1985 cb->disconn_cfm(conn, reason);
1986 }
1987 mutex_unlock(&hci_cb_list_lock);
1988
1989 if (conn->disconn_cfm_cb)
1990 conn->disconn_cfm_cb(conn, reason);
1991 }
1992
hci_auth_cfm(struct hci_conn * conn,__u8 status)1993 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1994 {
1995 struct hci_cb *cb;
1996 __u8 encrypt;
1997
1998 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1999 return;
2000
2001 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
2002
2003 mutex_lock(&hci_cb_list_lock);
2004 list_for_each_entry(cb, &hci_cb_list, list) {
2005 if (cb->security_cfm)
2006 cb->security_cfm(conn, status, encrypt);
2007 }
2008 mutex_unlock(&hci_cb_list_lock);
2009
2010 if (conn->security_cfm_cb)
2011 conn->security_cfm_cb(conn, status);
2012 }
2013
hci_encrypt_cfm(struct hci_conn * conn,__u8 status)2014 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
2015 {
2016 struct hci_cb *cb;
2017 __u8 encrypt;
2018
2019 if (conn->state == BT_CONFIG) {
2020 if (!status)
2021 conn->state = BT_CONNECTED;
2022
2023 hci_connect_cfm(conn, status);
2024 hci_conn_drop(conn);
2025 return;
2026 }
2027
2028 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
2029 encrypt = 0x00;
2030 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
2031 encrypt = 0x02;
2032 else
2033 encrypt = 0x01;
2034
2035 if (!status) {
2036 if (conn->sec_level == BT_SECURITY_SDP)
2037 conn->sec_level = BT_SECURITY_LOW;
2038
2039 if (conn->pending_sec_level > conn->sec_level)
2040 conn->sec_level = conn->pending_sec_level;
2041 }
2042
2043 mutex_lock(&hci_cb_list_lock);
2044 list_for_each_entry(cb, &hci_cb_list, list) {
2045 if (cb->security_cfm)
2046 cb->security_cfm(conn, status, encrypt);
2047 }
2048 mutex_unlock(&hci_cb_list_lock);
2049
2050 if (conn->security_cfm_cb)
2051 conn->security_cfm_cb(conn, status);
2052 }
2053
hci_key_change_cfm(struct hci_conn * conn,__u8 status)2054 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
2055 {
2056 struct hci_cb *cb;
2057
2058 mutex_lock(&hci_cb_list_lock);
2059 list_for_each_entry(cb, &hci_cb_list, list) {
2060 if (cb->key_change_cfm)
2061 cb->key_change_cfm(conn, status);
2062 }
2063 mutex_unlock(&hci_cb_list_lock);
2064 }
2065
hci_role_switch_cfm(struct hci_conn * conn,__u8 status,__u8 role)2066 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
2067 __u8 role)
2068 {
2069 struct hci_cb *cb;
2070
2071 mutex_lock(&hci_cb_list_lock);
2072 list_for_each_entry(cb, &hci_cb_list, list) {
2073 if (cb->role_switch_cfm)
2074 cb->role_switch_cfm(conn, status, role);
2075 }
2076 mutex_unlock(&hci_cb_list_lock);
2077 }
2078
hci_bdaddr_is_rpa(bdaddr_t * bdaddr,u8 addr_type)2079 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
2080 {
2081 if (addr_type != ADDR_LE_DEV_RANDOM)
2082 return false;
2083
2084 if ((bdaddr->b[5] & 0xc0) == 0x40)
2085 return true;
2086
2087 return false;
2088 }
2089
hci_is_identity_address(bdaddr_t * addr,u8 addr_type)2090 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
2091 {
2092 if (addr_type == ADDR_LE_DEV_PUBLIC)
2093 return true;
2094
2095 /* Check for Random Static address type */
2096 if ((addr->b[5] & 0xc0) == 0xc0)
2097 return true;
2098
2099 return false;
2100 }
2101
hci_get_irk(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 addr_type)2102 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
2103 bdaddr_t *bdaddr, u8 addr_type)
2104 {
2105 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
2106 return NULL;
2107
2108 return hci_find_irk_by_rpa(hdev, bdaddr);
2109 }
2110
hci_check_conn_params(u16 min,u16 max,u16 latency,u16 to_multiplier)2111 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
2112 u16 to_multiplier)
2113 {
2114 u16 max_latency;
2115
2116 if (min > max) {
2117 BT_WARN("min %d > max %d", min, max);
2118 return -EINVAL;
2119 }
2120
2121 if (min < 6) {
2122 BT_WARN("min %d < 6", min);
2123 return -EINVAL;
2124 }
2125
2126 if (max > 3200) {
2127 BT_WARN("max %d > 3200", max);
2128 return -EINVAL;
2129 }
2130
2131 if (to_multiplier < 10) {
2132 BT_WARN("to_multiplier %d < 10", to_multiplier);
2133 return -EINVAL;
2134 }
2135
2136 if (to_multiplier > 3200) {
2137 BT_WARN("to_multiplier %d > 3200", to_multiplier);
2138 return -EINVAL;
2139 }
2140
2141 if (max >= to_multiplier * 8) {
2142 BT_WARN("max %d >= to_multiplier %d * 8", max, to_multiplier);
2143 return -EINVAL;
2144 }
2145
2146 max_latency = (to_multiplier * 4 / max) - 1;
2147 if (latency > 499) {
2148 BT_WARN("latency %d > 499", latency);
2149 return -EINVAL;
2150 }
2151
2152 if (latency > max_latency) {
2153 BT_WARN("latency %d > max_latency %d", latency, max_latency);
2154 return -EINVAL;
2155 }
2156
2157 return 0;
2158 }
2159
2160 int hci_register_cb(struct hci_cb *hcb);
2161 int hci_unregister_cb(struct hci_cb *hcb);
2162
2163 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
2164 const void *param);
2165
2166 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
2167 const void *param);
2168 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
2169 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
2170 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb);
2171
2172 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
2173 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event);
2174
2175 u32 hci_conn_get_phy(struct hci_conn *conn);
2176
2177 /* ----- HCI Sockets ----- */
2178 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
2179 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
2180 int flag, struct sock *skip_sk);
2181 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
2182 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
2183 void *data, u16 data_len, ktime_t tstamp,
2184 int flag, struct sock *skip_sk);
2185
2186 void hci_sock_dev_event(struct hci_dev *hdev, int event);
2187
2188 #define HCI_MGMT_VAR_LEN BIT(0)
2189 #define HCI_MGMT_NO_HDEV BIT(1)
2190 #define HCI_MGMT_UNTRUSTED BIT(2)
2191 #define HCI_MGMT_UNCONFIGURED BIT(3)
2192 #define HCI_MGMT_HDEV_OPTIONAL BIT(4)
2193
2194 struct hci_mgmt_handler {
2195 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
2196 u16 data_len);
2197 size_t data_len;
2198 unsigned long flags;
2199 };
2200
2201 struct hci_mgmt_chan {
2202 struct list_head list;
2203 unsigned short channel;
2204 size_t handler_count;
2205 const struct hci_mgmt_handler *handlers;
2206 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
2207 };
2208
2209 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
2210 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
2211
2212 /* Management interface */
2213 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
2214 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
2215 BIT(BDADDR_LE_RANDOM))
2216 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
2217 BIT(BDADDR_LE_PUBLIC) | \
2218 BIT(BDADDR_LE_RANDOM))
2219
2220 /* These LE scan and inquiry parameters were chosen according to LE General
2221 * Discovery Procedure specification.
2222 */
2223 #define DISCOV_LE_SCAN_WIN 0x12
2224 #define DISCOV_LE_SCAN_INT 0x12
2225 #define DISCOV_LE_TIMEOUT 10240 /* msec */
2226 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
2227 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
2228 #define DISCOV_BREDR_INQUIRY_LEN 0x08
2229 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
2230 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */
2231 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */
2232 #define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */
2233 #define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */
2234 #define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */
2235 #define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */
2236 #define INTERVAL_TO_MS(x) (((x) * 10) / 0x10)
2237
2238 #define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */
2239
2240 void mgmt_fill_version_info(void *ver);
2241 int mgmt_new_settings(struct hci_dev *hdev);
2242 void mgmt_index_added(struct hci_dev *hdev);
2243 void mgmt_index_removed(struct hci_dev *hdev);
2244 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
2245 void mgmt_power_on(struct hci_dev *hdev, int err);
2246 void __mgmt_power_off(struct hci_dev *hdev);
2247 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
2248 bool persistent);
2249 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
2250 u8 *name, u8 name_len);
2251 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
2252 u8 link_type, u8 addr_type, u8 reason,
2253 bool mgmt_connected);
2254 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
2255 u8 link_type, u8 addr_type, u8 status);
2256 void mgmt_connect_failed(struct hci_dev *hdev, struct hci_conn *conn,
2257 u8 status);
2258 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
2259 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2260 u8 status);
2261 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2262 u8 status);
2263 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2264 u8 link_type, u8 addr_type, u32 value,
2265 u8 confirm_hint);
2266 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2267 u8 link_type, u8 addr_type, u8 status);
2268 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2269 u8 link_type, u8 addr_type, u8 status);
2270 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2271 u8 link_type, u8 addr_type);
2272 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2273 u8 link_type, u8 addr_type, u8 status);
2274 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2275 u8 link_type, u8 addr_type, u8 status);
2276 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
2277 u8 link_type, u8 addr_type, u32 passkey,
2278 u8 entered);
2279 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
2280 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
2281 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
2282 u8 status);
2283 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
2284 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
2285 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
2286 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2287 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
2288 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len,
2289 u64 instant);
2290 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2291 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
2292 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
2293 void mgmt_suspending(struct hci_dev *hdev, u8 state);
2294 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
2295 u8 addr_type);
2296 bool mgmt_powering_down(struct hci_dev *hdev);
2297 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
2298 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
2299 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
2300 bool persistent);
2301 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
2302 u8 bdaddr_type, u8 store_hint, u16 min_interval,
2303 u16 max_interval, u16 latency, u16 timeout);
2304 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
2305 bool mgmt_get_connectable(struct hci_dev *hdev);
2306 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
2307 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
2308 u8 instance);
2309 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
2310 u8 instance);
2311 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
2312 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle,
2313 bdaddr_t *bdaddr, u8 addr_type);
2314
2315 int hci_abort_conn(struct hci_conn *conn, u8 reason);
2316 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
2317 u16 to_multiplier);
2318 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
2319 __u8 ltk[16], __u8 key_size);
2320
2321 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
2322 u8 *bdaddr_type);
2323
2324 #define SCO_AIRMODE_MASK 0x0003
2325 #define SCO_AIRMODE_CVSD 0x0000
2326 #define SCO_AIRMODE_TRANSP 0x0003
2327
2328 #define LOCAL_CODEC_ACL_MASK BIT(0)
2329 #define LOCAL_CODEC_SCO_MASK BIT(1)
2330
2331 #define TRANSPORT_TYPE_MAX 0x04
2332
2333 #endif /* __HCI_CORE_H */
2334