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