1 /*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4 Copyright 2023-2024 NXP
5
6 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License version 2 as
10 published by the Free Software Foundation;
11
12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20
21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
23 SOFTWARE IS DISCLAIMED.
24 */
25
26 #ifndef __HCI_CORE_H
27 #define __HCI_CORE_H
28
29 #include <linux/idr.h>
30 #include <linux/leds.h>
31 #include <linux/rculist.h>
32
33 #include <net/bluetooth/hci.h>
34 #include <net/bluetooth/hci_sync.h>
35 #include <net/bluetooth/hci_sock.h>
36 #include <net/bluetooth/coredump.h>
37
38 /* HCI priority */
39 #define HCI_PRIO_MAX 7
40
41 /* HCI maximum id value */
42 #define HCI_MAX_ID 10000
43
44 /* HCI Core structures */
45 struct inquiry_data {
46 bdaddr_t bdaddr;
47 __u8 pscan_rep_mode;
48 __u8 pscan_period_mode;
49 __u8 pscan_mode;
50 __u8 dev_class[3];
51 __le16 clock_offset;
52 __s8 rssi;
53 __u8 ssp_mode;
54 };
55
56 struct inquiry_entry {
57 struct list_head all; /* inq_cache.all */
58 struct list_head list; /* unknown or resolve */
59 enum {
60 NAME_NOT_KNOWN,
61 NAME_NEEDED,
62 NAME_PENDING,
63 NAME_KNOWN,
64 } name_state;
65 __u32 timestamp;
66 struct inquiry_data data;
67 };
68
69 struct discovery_state {
70 int type;
71 enum {
72 DISCOVERY_STOPPED,
73 DISCOVERY_STARTING,
74 DISCOVERY_FINDING,
75 DISCOVERY_RESOLVING,
76 DISCOVERY_STOPPING,
77 } state;
78 struct list_head all; /* All devices found during inquiry */
79 struct list_head unknown; /* Name state not known */
80 struct list_head resolve; /* Name needs to be resolved */
81 __u32 timestamp;
82 bdaddr_t last_adv_addr;
83 u8 last_adv_addr_type;
84 s8 last_adv_rssi;
85 u32 last_adv_flags;
86 u8 last_adv_data[HCI_MAX_EXT_AD_LENGTH];
87 u8 last_adv_data_len;
88 bool report_invalid_rssi;
89 bool result_filtering;
90 bool limited;
91 s8 rssi;
92 u16 uuid_count;
93 u8 (*uuids)[16];
94 unsigned long name_resolve_timeout;
95 };
96
97 #define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
98
99 enum suspend_tasks {
100 SUSPEND_PAUSE_DISCOVERY,
101 SUSPEND_UNPAUSE_DISCOVERY,
102
103 SUSPEND_PAUSE_ADVERTISING,
104 SUSPEND_UNPAUSE_ADVERTISING,
105
106 SUSPEND_SCAN_DISABLE,
107 SUSPEND_SCAN_ENABLE,
108 SUSPEND_DISCONNECTING,
109
110 SUSPEND_POWERING_DOWN,
111
112 SUSPEND_PREPARE_NOTIFIER,
113
114 SUSPEND_SET_ADV_FILTER,
115 __SUSPEND_NUM_TASKS
116 };
117
118 enum suspended_state {
119 BT_RUNNING = 0,
120 BT_SUSPEND_DISCONNECT,
121 BT_SUSPEND_CONFIGURE_WAKE,
122 };
123
124 struct hci_conn_hash {
125 struct list_head list;
126 unsigned int acl_num;
127 unsigned int sco_num;
128 unsigned int iso_num;
129 unsigned int le_num;
130 unsigned int le_num_peripheral;
131 };
132
133 struct bdaddr_list {
134 struct list_head list;
135 bdaddr_t bdaddr;
136 u8 bdaddr_type;
137 };
138
139 struct codec_list {
140 struct list_head list;
141 u8 id;
142 __u16 cid;
143 __u16 vid;
144 u8 transport;
145 u8 num_caps;
146 u32 len;
147 struct hci_codec_caps caps[];
148 };
149
150 struct bdaddr_list_with_irk {
151 struct list_head list;
152 bdaddr_t bdaddr;
153 u8 bdaddr_type;
154 u8 peer_irk[16];
155 u8 local_irk[16];
156 };
157
158 /* Bitmask of connection flags */
159 enum hci_conn_flags {
160 HCI_CONN_FLAG_REMOTE_WAKEUP = BIT(0),
161 HCI_CONN_FLAG_DEVICE_PRIVACY = BIT(1),
162 HCI_CONN_FLAG_ADDRESS_RESOLUTION = BIT(2),
163 };
164 typedef u8 hci_conn_flags_t;
165
166 struct bdaddr_list_with_flags {
167 struct list_head list;
168 bdaddr_t bdaddr;
169 u8 bdaddr_type;
170 hci_conn_flags_t flags;
171 };
172
173 struct bt_uuid {
174 struct list_head list;
175 u8 uuid[16];
176 u8 size;
177 u8 svc_hint;
178 };
179
180 struct blocked_key {
181 struct list_head list;
182 struct rcu_head rcu;
183 u8 type;
184 u8 val[16];
185 };
186
187 struct smp_csrk {
188 bdaddr_t bdaddr;
189 u8 bdaddr_type;
190 u8 type;
191 u8 val[16];
192 };
193
194 struct smp_ltk {
195 struct list_head list;
196 struct rcu_head rcu;
197 bdaddr_t bdaddr;
198 u8 bdaddr_type;
199 u8 authenticated;
200 u8 type;
201 u8 enc_size;
202 __le16 ediv;
203 __le64 rand;
204 u8 val[16];
205 };
206
207 struct smp_irk {
208 struct list_head list;
209 struct rcu_head rcu;
210 bdaddr_t rpa;
211 bdaddr_t bdaddr;
212 u8 addr_type;
213 u8 val[16];
214 };
215
216 struct link_key {
217 struct list_head list;
218 struct rcu_head rcu;
219 bdaddr_t bdaddr;
220 u8 type;
221 u8 val[HCI_LINK_KEY_SIZE];
222 u8 pin_len;
223 };
224
225 struct oob_data {
226 struct list_head list;
227 bdaddr_t bdaddr;
228 u8 bdaddr_type;
229 u8 present;
230 u8 hash192[16];
231 u8 rand192[16];
232 u8 hash256[16];
233 u8 rand256[16];
234 };
235
236 struct adv_info {
237 struct list_head list;
238 bool enabled;
239 bool pending;
240 bool periodic;
241 __u8 mesh;
242 __u8 instance;
243 __u8 handle;
244 __u32 flags;
245 __u16 timeout;
246 __u16 remaining_time;
247 __u16 duration;
248 __u16 adv_data_len;
249 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
250 bool adv_data_changed;
251 __u16 scan_rsp_len;
252 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
253 bool scan_rsp_changed;
254 __u16 per_adv_data_len;
255 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
256 __s8 tx_power;
257 __u32 min_interval;
258 __u32 max_interval;
259 bdaddr_t random_addr;
260 bool rpa_expired;
261 struct delayed_work rpa_expired_cb;
262 };
263
264 struct tx_queue {
265 struct sk_buff_head queue;
266 unsigned int extra;
267 unsigned int tracked;
268 };
269
270 #define HCI_MAX_ADV_INSTANCES 5
271 #define HCI_DEFAULT_ADV_DURATION 2
272
273 #define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F
274
275 #define DATA_CMP(_d1, _l1, _d2, _l2) \
276 (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2)
277
278 #define ADV_DATA_CMP(_adv, _data, _len) \
279 DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len)
280
281 #define SCAN_RSP_CMP(_adv, _data, _len) \
282 DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len)
283
284 struct monitored_device {
285 struct list_head list;
286
287 bdaddr_t bdaddr;
288 __u8 addr_type;
289 __u16 handle;
290 bool notified;
291 };
292
293 struct adv_pattern {
294 struct list_head list;
295 __u8 ad_type;
296 __u8 offset;
297 __u8 length;
298 __u8 value[HCI_MAX_EXT_AD_LENGTH];
299 };
300
301 struct adv_rssi_thresholds {
302 __s8 low_threshold;
303 __s8 high_threshold;
304 __u16 low_threshold_timeout;
305 __u16 high_threshold_timeout;
306 __u8 sampling_period;
307 };
308
309 struct adv_monitor {
310 struct list_head patterns;
311 struct adv_rssi_thresholds rssi;
312 __u16 handle;
313
314 enum {
315 ADV_MONITOR_STATE_NOT_REGISTERED,
316 ADV_MONITOR_STATE_REGISTERED,
317 ADV_MONITOR_STATE_OFFLOADED
318 } state;
319 };
320
321 #define HCI_MIN_ADV_MONITOR_HANDLE 1
322 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32
323 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16
324 #define HCI_ADV_MONITOR_EXT_NONE 1
325 #define HCI_ADV_MONITOR_EXT_MSFT 2
326
327 #define HCI_MAX_SHORT_NAME_LENGTH 10
328
329 #define HCI_CONN_HANDLE_MAX 0x0eff
330 #define HCI_CONN_HANDLE_UNSET(_handle) (_handle > HCI_CONN_HANDLE_MAX)
331
332 /* Min encryption key size to match with SMP */
333 #define HCI_MIN_ENC_KEY_SIZE 7
334
335 /* Default LE RPA expiry time, 15 minutes */
336 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
337
338 /* Default min/max age of connection information (1s/3s) */
339 #define DEFAULT_CONN_INFO_MIN_AGE 1000
340 #define DEFAULT_CONN_INFO_MAX_AGE 3000
341 /* Default authenticated payload timeout 30s */
342 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8
343
344 #define HCI_MAX_PAGES 3
345
346 struct hci_dev {
347 struct list_head list;
348 struct mutex lock;
349
350 struct ida unset_handle_ida;
351
352 const char *name;
353 unsigned long flags;
354 __u16 id;
355 __u8 bus;
356 bdaddr_t bdaddr;
357 bdaddr_t setup_addr;
358 bdaddr_t public_addr;
359 bdaddr_t random_addr;
360 bdaddr_t static_addr;
361 __u8 adv_addr_type;
362 __u8 dev_name[HCI_MAX_NAME_LENGTH];
363 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
364 __u8 eir[HCI_MAX_EIR_LENGTH];
365 __u16 appearance;
366 __u8 dev_class[3];
367 __u8 major_class;
368 __u8 minor_class;
369 __u8 max_page;
370 __u8 features[HCI_MAX_PAGES][8];
371 __u8 le_features[8];
372 __u8 le_accept_list_size;
373 __u8 le_resolv_list_size;
374 __u8 le_num_of_adv_sets;
375 __u8 le_states[8];
376 __u8 mesh_ad_types[16];
377 __u8 mesh_send_ref;
378 __u8 commands[64];
379 __u8 hci_ver;
380 __u16 hci_rev;
381 __u8 lmp_ver;
382 __u16 manufacturer;
383 __u16 lmp_subver;
384 __u16 voice_setting;
385 __u8 num_iac;
386 __u16 stored_max_keys;
387 __u16 stored_num_keys;
388 __u8 io_capability;
389 __s8 inq_tx_power;
390 __u8 err_data_reporting;
391 __u16 page_scan_interval;
392 __u16 page_scan_window;
393 __u8 page_scan_type;
394 __u8 le_adv_channel_map;
395 __u16 le_adv_min_interval;
396 __u16 le_adv_max_interval;
397 __u8 le_scan_type;
398 __u16 le_scan_interval;
399 __u16 le_scan_window;
400 __u16 le_scan_int_suspend;
401 __u16 le_scan_window_suspend;
402 __u16 le_scan_int_discovery;
403 __u16 le_scan_window_discovery;
404 __u16 le_scan_int_adv_monitor;
405 __u16 le_scan_window_adv_monitor;
406 __u16 le_scan_int_connect;
407 __u16 le_scan_window_connect;
408 __u16 le_conn_min_interval;
409 __u16 le_conn_max_interval;
410 __u16 le_conn_latency;
411 __u16 le_supv_timeout;
412 __u16 le_def_tx_len;
413 __u16 le_def_tx_time;
414 __u16 le_max_tx_len;
415 __u16 le_max_tx_time;
416 __u16 le_max_rx_len;
417 __u16 le_max_rx_time;
418 __u8 le_max_key_size;
419 __u8 le_min_key_size;
420 __u16 discov_interleaved_timeout;
421 __u16 conn_info_min_age;
422 __u16 conn_info_max_age;
423 __u16 auth_payload_timeout;
424 __u8 min_enc_key_size;
425 __u8 max_enc_key_size;
426 __u8 pairing_opts;
427 __u8 ssp_debug_mode;
428 __u8 hw_error_code;
429 __u32 clock;
430 __u16 advmon_allowlist_duration;
431 __u16 advmon_no_filter_duration;
432 __u8 enable_advmon_interleave_scan;
433
434 __u16 devid_source;
435 __u16 devid_vendor;
436 __u16 devid_product;
437 __u16 devid_version;
438
439 __u8 def_page_scan_type;
440 __u16 def_page_scan_int;
441 __u16 def_page_scan_window;
442 __u8 def_inq_scan_type;
443 __u16 def_inq_scan_int;
444 __u16 def_inq_scan_window;
445 __u16 def_br_lsto;
446 __u16 def_page_timeout;
447 __u16 def_multi_adv_rotation_duration;
448 __u16 def_le_autoconnect_timeout;
449 __s8 min_le_tx_power;
450 __s8 max_le_tx_power;
451
452 __u16 pkt_type;
453 __u16 esco_type;
454 __u16 link_policy;
455 __u16 link_mode;
456
457 __u32 idle_timeout;
458 __u16 sniff_min_interval;
459 __u16 sniff_max_interval;
460
461 unsigned int auto_accept_delay;
462
463 unsigned long quirks;
464
465 atomic_t cmd_cnt;
466 unsigned int acl_cnt;
467 unsigned int sco_cnt;
468 unsigned int le_cnt;
469 unsigned int iso_cnt;
470
471 unsigned int acl_mtu;
472 unsigned int sco_mtu;
473 unsigned int le_mtu;
474 unsigned int iso_mtu;
475 unsigned int acl_pkts;
476 unsigned int sco_pkts;
477 unsigned int le_pkts;
478 unsigned int iso_pkts;
479
480 unsigned long acl_last_tx;
481 unsigned long le_last_tx;
482
483 __u8 le_tx_def_phys;
484 __u8 le_rx_def_phys;
485
486 struct workqueue_struct *workqueue;
487 struct workqueue_struct *req_workqueue;
488
489 struct work_struct power_on;
490 struct delayed_work power_off;
491 struct work_struct error_reset;
492 struct work_struct cmd_sync_work;
493 struct list_head cmd_sync_work_list;
494 struct mutex cmd_sync_work_lock;
495 struct mutex unregister_lock;
496 struct work_struct cmd_sync_cancel_work;
497 struct work_struct reenable_adv_work;
498
499 __u16 discov_timeout;
500 struct delayed_work discov_off;
501
502 struct delayed_work service_cache;
503
504 struct delayed_work cmd_timer;
505 struct delayed_work ncmd_timer;
506
507 struct work_struct rx_work;
508 struct work_struct cmd_work;
509 struct work_struct tx_work;
510
511 struct delayed_work le_scan_disable;
512
513 struct sk_buff_head rx_q;
514 struct sk_buff_head raw_q;
515 struct sk_buff_head cmd_q;
516
517 struct sk_buff *sent_cmd;
518 struct sk_buff *recv_event;
519
520 struct mutex req_lock;
521 wait_queue_head_t req_wait_q;
522 __u32 req_status;
523 __u32 req_result;
524 struct sk_buff *req_skb;
525 struct sk_buff *req_rsp;
526
527 void *smp_data;
528 void *smp_bredr_data;
529
530 struct discovery_state discovery;
531
532 bool discovery_paused;
533 int advertising_old_state;
534 bool advertising_paused;
535
536 struct notifier_block suspend_notifier;
537 enum suspended_state suspend_state_next;
538 enum suspended_state suspend_state;
539 bool scanning_paused;
540 bool suspended;
541 u8 wake_reason;
542 bdaddr_t wake_addr;
543 u8 wake_addr_type;
544
545 struct hci_conn_hash conn_hash;
546
547 struct list_head mesh_pending;
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 (*reset)(struct hci_dev *hdev);
643 bool (*wakeup)(struct hci_dev *hdev);
644 int (*set_quality_report)(struct hci_dev *hdev, bool enable);
645 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path);
646 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type,
647 struct bt_codec *codec, __u8 *vnd_len,
648 __u8 **vnd_data);
649 u8 (*classify_pkt_type)(struct hci_dev *hdev, struct sk_buff *skb);
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 __u8 sid;
678 __u16 state;
679 __u16 mtu;
680 __u8 mode;
681 __u8 type;
682 __u8 role;
683 bool out;
684 __u8 attempt;
685 __u8 dev_class[3];
686 __u8 features[HCI_MAX_PAGES][8];
687 __u16 pkt_type;
688 __u16 link_policy;
689 __u8 key_type;
690 __u8 auth_type;
691 __u8 sec_level;
692 __u8 pending_sec_level;
693 __u8 pin_length;
694 __u8 enc_key_size;
695 __u8 io_capability;
696 __u32 passkey_notify;
697 __u8 passkey_entered;
698 __u16 disc_timeout;
699 __u16 conn_timeout;
700 __u16 setting;
701 __u16 auth_payload_timeout;
702 __u16 le_conn_min_interval;
703 __u16 le_conn_max_interval;
704 __u16 le_conn_interval;
705 __u16 le_conn_latency;
706 __u16 le_supv_timeout;
707 __u8 le_adv_data[HCI_MAX_EXT_AD_LENGTH];
708 __u8 le_adv_data_len;
709 __u8 le_per_adv_data[HCI_MAX_PER_AD_TOT_LEN];
710 __u16 le_per_adv_data_len;
711 __u16 le_per_adv_data_offset;
712 __u8 le_adv_phy;
713 __u8 le_adv_sec_phy;
714 __u8 le_tx_phy;
715 __u8 le_rx_phy;
716 __s8 rssi;
717 __s8 tx_power;
718 __s8 max_tx_power;
719 struct bt_iso_qos iso_qos;
720 __u8 num_bis;
721 __u8 bis[HCI_MAX_ISO_BIS];
722
723 unsigned long flags;
724
725 enum conn_reasons conn_reason;
726 __u8 abort_reason;
727
728 __u32 clock;
729 __u16 clock_accuracy;
730
731 unsigned long conn_info_timestamp;
732
733 __u8 remote_cap;
734 __u8 remote_auth;
735 __u8 remote_id;
736
737 unsigned int sent;
738
739 struct sk_buff_head data_q;
740 struct list_head chan_list;
741
742 struct tx_queue tx_q;
743
744 struct delayed_work disc_work;
745 struct delayed_work auto_accept_work;
746 struct delayed_work idle_work;
747 struct delayed_work le_conn_timeout;
748
749 struct device dev;
750 struct dentry *debugfs;
751
752 struct hci_dev *hdev;
753 void *l2cap_data;
754 void *sco_data;
755 void *iso_data;
756
757 struct list_head link_list;
758 struct hci_conn *parent;
759 struct hci_link *link;
760
761 struct bt_codec codec;
762
763 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
764 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
765 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
766
767 void (*cleanup)(struct hci_conn *conn);
768 };
769
770 struct hci_link {
771 struct list_head list;
772 struct hci_conn *conn;
773 };
774
775 struct hci_chan {
776 struct list_head list;
777 __u16 handle;
778 struct hci_conn *conn;
779 struct sk_buff_head data_q;
780 unsigned int sent;
781 __u8 state;
782 };
783
784 struct hci_conn_params {
785 struct list_head list;
786 struct list_head action;
787
788 bdaddr_t addr;
789 u8 addr_type;
790
791 u16 conn_min_interval;
792 u16 conn_max_interval;
793 u16 conn_latency;
794 u16 supervision_timeout;
795
796 enum {
797 HCI_AUTO_CONN_DISABLED,
798 HCI_AUTO_CONN_REPORT,
799 HCI_AUTO_CONN_DIRECT,
800 HCI_AUTO_CONN_ALWAYS,
801 HCI_AUTO_CONN_LINK_LOSS,
802 HCI_AUTO_CONN_EXPLICIT,
803 } auto_connect;
804
805 struct hci_conn *conn;
806 bool explicit_connect;
807 /* Accessed without hdev->lock: */
808 hci_conn_flags_t flags;
809 u8 privacy_mode;
810 };
811
812 extern struct list_head hci_dev_list;
813 extern struct list_head hci_cb_list;
814 extern rwlock_t hci_dev_list_lock;
815 extern struct mutex hci_cb_list_lock;
816
817 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
818 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
819 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
820 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
821 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
822 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
823 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
824
825 #define hci_dev_clear_volatile_flags(hdev) \
826 do { \
827 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
828 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
829 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
830 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
831 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \
832 } while (0)
833
834 #define hci_dev_le_state_simultaneous(hdev) \
835 (!test_bit(HCI_QUIRK_BROKEN_LE_STATES, &hdev->quirks) && \
836 (hdev->le_states[4] & 0x08) && /* Central */ \
837 (hdev->le_states[4] & 0x40) && /* Peripheral */ \
838 (hdev->le_states[3] & 0x10)) /* Simultaneous */
839
840 /* ----- HCI interface to upper protocols ----- */
841 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
842 int l2cap_disconn_ind(struct hci_conn *hcon);
843 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
844
845 #if IS_ENABLED(CONFIG_BT_BREDR)
846 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
847 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
848 #else
sco_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 * flags)849 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
850 __u8 *flags)
851 {
852 return 0;
853 }
854
sco_recv_scodata(struct hci_conn * hcon,struct sk_buff * skb)855 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
856 {
857 }
858 #endif
859
860 #if IS_ENABLED(CONFIG_BT_LE)
861 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
862 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
863 #else
iso_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 * flags)864 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
865 __u8 *flags)
866 {
867 return 0;
868 }
iso_recv(struct hci_conn * hcon,struct sk_buff * skb,u16 flags)869 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb,
870 u16 flags)
871 {
872 }
873 #endif
874
875 /* ----- Inquiry cache ----- */
876 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
877 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
878
discovery_init(struct hci_dev * hdev)879 static inline void discovery_init(struct hci_dev *hdev)
880 {
881 hdev->discovery.state = DISCOVERY_STOPPED;
882 INIT_LIST_HEAD(&hdev->discovery.all);
883 INIT_LIST_HEAD(&hdev->discovery.unknown);
884 INIT_LIST_HEAD(&hdev->discovery.resolve);
885 hdev->discovery.report_invalid_rssi = true;
886 hdev->discovery.rssi = HCI_RSSI_INVALID;
887 }
888
hci_discovery_filter_clear(struct hci_dev * hdev)889 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
890 {
891 hdev->discovery.result_filtering = false;
892 hdev->discovery.report_invalid_rssi = true;
893 hdev->discovery.rssi = HCI_RSSI_INVALID;
894 hdev->discovery.uuid_count = 0;
895 kfree(hdev->discovery.uuids);
896 hdev->discovery.uuids = NULL;
897 }
898
899 bool hci_discovery_active(struct hci_dev *hdev);
900
901 void hci_discovery_set_state(struct hci_dev *hdev, int state);
902
inquiry_cache_empty(struct hci_dev * hdev)903 static inline int inquiry_cache_empty(struct hci_dev *hdev)
904 {
905 return list_empty(&hdev->discovery.all);
906 }
907
inquiry_cache_age(struct hci_dev * hdev)908 static inline long inquiry_cache_age(struct hci_dev *hdev)
909 {
910 struct discovery_state *c = &hdev->discovery;
911 return jiffies - c->timestamp;
912 }
913
inquiry_entry_age(struct inquiry_entry * e)914 static inline long inquiry_entry_age(struct inquiry_entry *e)
915 {
916 return jiffies - e->timestamp;
917 }
918
919 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
920 bdaddr_t *bdaddr);
921 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
922 bdaddr_t *bdaddr);
923 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
924 bdaddr_t *bdaddr,
925 int state);
926 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
927 struct inquiry_entry *ie);
928 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
929 bool name_known);
930 void hci_inquiry_cache_flush(struct hci_dev *hdev);
931
932 /* ----- HCI Connections ----- */
933 enum {
934 HCI_CONN_AUTH_PEND,
935 HCI_CONN_ENCRYPT_PEND,
936 HCI_CONN_RSWITCH_PEND,
937 HCI_CONN_MODE_CHANGE_PEND,
938 HCI_CONN_SCO_SETUP_PEND,
939 HCI_CONN_MGMT_CONNECTED,
940 HCI_CONN_SSP_ENABLED,
941 HCI_CONN_SC_ENABLED,
942 HCI_CONN_AES_CCM,
943 HCI_CONN_POWER_SAVE,
944 HCI_CONN_FLUSH_KEY,
945 HCI_CONN_ENCRYPT,
946 HCI_CONN_AUTH,
947 HCI_CONN_SECURE,
948 HCI_CONN_FIPS,
949 HCI_CONN_STK_ENCRYPT,
950 HCI_CONN_AUTH_INITIATOR,
951 HCI_CONN_DROP,
952 HCI_CONN_CANCEL,
953 HCI_CONN_PARAM_REMOVAL_PEND,
954 HCI_CONN_NEW_LINK_KEY,
955 HCI_CONN_SCANNING,
956 HCI_CONN_AUTH_FAILURE,
957 HCI_CONN_PER_ADV,
958 HCI_CONN_BIG_CREATED,
959 HCI_CONN_CREATE_CIS,
960 HCI_CONN_CREATE_BIG_SYNC,
961 HCI_CONN_BIG_SYNC,
962 HCI_CONN_BIG_SYNC_FAILED,
963 HCI_CONN_CREATE_PA_SYNC,
964 HCI_CONN_PA_SYNC,
965 HCI_CONN_PA_SYNC_FAILED,
966 };
967
hci_conn_ssp_enabled(struct hci_conn * conn)968 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
969 {
970 struct hci_dev *hdev = conn->hdev;
971 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
972 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
973 }
974
hci_conn_sc_enabled(struct hci_conn * conn)975 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
976 {
977 struct hci_dev *hdev = conn->hdev;
978 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
979 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
980 }
981
hci_conn_hash_add(struct hci_dev * hdev,struct hci_conn * c)982 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
983 {
984 struct hci_conn_hash *h = &hdev->conn_hash;
985 list_add_tail_rcu(&c->list, &h->list);
986 switch (c->type) {
987 case ACL_LINK:
988 h->acl_num++;
989 break;
990 case LE_LINK:
991 h->le_num++;
992 if (c->role == HCI_ROLE_SLAVE)
993 h->le_num_peripheral++;
994 break;
995 case SCO_LINK:
996 case ESCO_LINK:
997 h->sco_num++;
998 break;
999 case ISO_LINK:
1000 h->iso_num++;
1001 break;
1002 }
1003 }
1004
hci_conn_hash_del(struct hci_dev * hdev,struct hci_conn * c)1005 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
1006 {
1007 struct hci_conn_hash *h = &hdev->conn_hash;
1008
1009 list_del_rcu(&c->list);
1010 synchronize_rcu();
1011
1012 switch (c->type) {
1013 case ACL_LINK:
1014 h->acl_num--;
1015 break;
1016 case LE_LINK:
1017 h->le_num--;
1018 if (c->role == HCI_ROLE_SLAVE)
1019 h->le_num_peripheral--;
1020 break;
1021 case SCO_LINK:
1022 case ESCO_LINK:
1023 h->sco_num--;
1024 break;
1025 case ISO_LINK:
1026 h->iso_num--;
1027 break;
1028 }
1029 }
1030
hci_conn_num(struct hci_dev * hdev,__u8 type)1031 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
1032 {
1033 struct hci_conn_hash *h = &hdev->conn_hash;
1034 switch (type) {
1035 case ACL_LINK:
1036 return h->acl_num;
1037 case LE_LINK:
1038 return h->le_num;
1039 case SCO_LINK:
1040 case ESCO_LINK:
1041 return h->sco_num;
1042 case ISO_LINK:
1043 return h->iso_num;
1044 default:
1045 return 0;
1046 }
1047 }
1048
hci_conn_count(struct hci_dev * hdev)1049 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
1050 {
1051 struct hci_conn_hash *c = &hdev->conn_hash;
1052
1053 return c->acl_num + c->sco_num + c->le_num + c->iso_num;
1054 }
1055
hci_conn_valid(struct hci_dev * hdev,struct hci_conn * conn)1056 static inline bool hci_conn_valid(struct hci_dev *hdev, struct hci_conn *conn)
1057 {
1058 struct hci_conn_hash *h = &hdev->conn_hash;
1059 struct hci_conn *c;
1060
1061 rcu_read_lock();
1062
1063 list_for_each_entry_rcu(c, &h->list, list) {
1064 if (c == conn) {
1065 rcu_read_unlock();
1066 return true;
1067 }
1068 }
1069 rcu_read_unlock();
1070
1071 return false;
1072 }
1073
hci_conn_lookup_type(struct hci_dev * hdev,__u16 handle)1074 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
1075 {
1076 struct hci_conn_hash *h = &hdev->conn_hash;
1077 struct hci_conn *c;
1078 __u8 type = INVALID_LINK;
1079
1080 rcu_read_lock();
1081
1082 list_for_each_entry_rcu(c, &h->list, list) {
1083 if (c->handle == handle) {
1084 type = c->type;
1085 break;
1086 }
1087 }
1088
1089 rcu_read_unlock();
1090
1091 return type;
1092 }
1093
hci_conn_hash_lookup_bis(struct hci_dev * hdev,bdaddr_t * ba,__u8 bis)1094 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev,
1095 bdaddr_t *ba, __u8 bis)
1096 {
1097 struct hci_conn_hash *h = &hdev->conn_hash;
1098 struct hci_conn *c;
1099
1100 rcu_read_lock();
1101
1102 list_for_each_entry_rcu(c, &h->list, list) {
1103 if (bacmp(&c->dst, ba) || c->type != ISO_LINK)
1104 continue;
1105
1106 if (c->iso_qos.bcast.bis == bis) {
1107 rcu_read_unlock();
1108 return c;
1109 }
1110 }
1111 rcu_read_unlock();
1112
1113 return NULL;
1114 }
1115
1116 static inline struct hci_conn *
hci_conn_hash_lookup_create_pa_sync(struct hci_dev * hdev)1117 hci_conn_hash_lookup_create_pa_sync(struct hci_dev *hdev)
1118 {
1119 struct hci_conn_hash *h = &hdev->conn_hash;
1120 struct hci_conn *c;
1121
1122 rcu_read_lock();
1123
1124 list_for_each_entry_rcu(c, &h->list, list) {
1125 if (c->type != ISO_LINK)
1126 continue;
1127
1128 if (!test_bit(HCI_CONN_CREATE_PA_SYNC, &c->flags))
1129 continue;
1130
1131 rcu_read_unlock();
1132 return c;
1133 }
1134
1135 rcu_read_unlock();
1136
1137 return NULL;
1138 }
1139
1140 static inline struct hci_conn *
hci_conn_hash_lookup_per_adv_bis(struct hci_dev * hdev,bdaddr_t * ba,__u8 big,__u8 bis)1141 hci_conn_hash_lookup_per_adv_bis(struct hci_dev *hdev,
1142 bdaddr_t *ba,
1143 __u8 big, __u8 bis)
1144 {
1145 struct hci_conn_hash *h = &hdev->conn_hash;
1146 struct hci_conn *c;
1147
1148 rcu_read_lock();
1149
1150 list_for_each_entry_rcu(c, &h->list, list) {
1151 if (bacmp(&c->dst, ba) || c->type != ISO_LINK ||
1152 !test_bit(HCI_CONN_PER_ADV, &c->flags))
1153 continue;
1154
1155 if (c->iso_qos.bcast.big == big &&
1156 c->iso_qos.bcast.bis == bis) {
1157 rcu_read_unlock();
1158 return c;
1159 }
1160 }
1161 rcu_read_unlock();
1162
1163 return NULL;
1164 }
1165
hci_conn_hash_lookup_handle(struct hci_dev * hdev,__u16 handle)1166 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
1167 __u16 handle)
1168 {
1169 struct hci_conn_hash *h = &hdev->conn_hash;
1170 struct hci_conn *c;
1171
1172 rcu_read_lock();
1173
1174 list_for_each_entry_rcu(c, &h->list, list) {
1175 if (c->handle == handle) {
1176 rcu_read_unlock();
1177 return c;
1178 }
1179 }
1180 rcu_read_unlock();
1181
1182 return NULL;
1183 }
1184
hci_conn_hash_lookup_ba(struct hci_dev * hdev,__u8 type,bdaddr_t * ba)1185 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
1186 __u8 type, bdaddr_t *ba)
1187 {
1188 struct hci_conn_hash *h = &hdev->conn_hash;
1189 struct hci_conn *c;
1190
1191 rcu_read_lock();
1192
1193 list_for_each_entry_rcu(c, &h->list, list) {
1194 if (c->type == type && !bacmp(&c->dst, ba)) {
1195 rcu_read_unlock();
1196 return c;
1197 }
1198 }
1199
1200 rcu_read_unlock();
1201
1202 return NULL;
1203 }
1204
hci_conn_hash_lookup_le(struct hci_dev * hdev,bdaddr_t * ba,__u8 ba_type)1205 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
1206 bdaddr_t *ba,
1207 __u8 ba_type)
1208 {
1209 struct hci_conn_hash *h = &hdev->conn_hash;
1210 struct hci_conn *c;
1211
1212 rcu_read_lock();
1213
1214 list_for_each_entry_rcu(c, &h->list, list) {
1215 if (c->type != LE_LINK)
1216 continue;
1217
1218 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1219 rcu_read_unlock();
1220 return c;
1221 }
1222 }
1223
1224 rcu_read_unlock();
1225
1226 return NULL;
1227 }
1228
hci_conn_hash_lookup_cis(struct hci_dev * hdev,bdaddr_t * ba,__u8 ba_type,__u8 cig,__u8 id)1229 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev,
1230 bdaddr_t *ba,
1231 __u8 ba_type,
1232 __u8 cig,
1233 __u8 id)
1234 {
1235 struct hci_conn_hash *h = &hdev->conn_hash;
1236 struct hci_conn *c;
1237
1238 rcu_read_lock();
1239
1240 list_for_each_entry_rcu(c, &h->list, list) {
1241 if (c->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY))
1242 continue;
1243
1244 /* Match CIG ID if set */
1245 if (cig != c->iso_qos.ucast.cig)
1246 continue;
1247
1248 /* Match CIS ID if set */
1249 if (id != c->iso_qos.ucast.cis)
1250 continue;
1251
1252 /* Match destination address if set */
1253 if (!ba || (ba_type == c->dst_type && !bacmp(&c->dst, ba))) {
1254 rcu_read_unlock();
1255 return c;
1256 }
1257 }
1258
1259 rcu_read_unlock();
1260
1261 return NULL;
1262 }
1263
hci_conn_hash_lookup_cig(struct hci_dev * hdev,__u8 handle)1264 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev,
1265 __u8 handle)
1266 {
1267 struct hci_conn_hash *h = &hdev->conn_hash;
1268 struct hci_conn *c;
1269
1270 rcu_read_lock();
1271
1272 list_for_each_entry_rcu(c, &h->list, list) {
1273 if (c->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY))
1274 continue;
1275
1276 if (handle == c->iso_qos.ucast.cig) {
1277 rcu_read_unlock();
1278 return c;
1279 }
1280 }
1281
1282 rcu_read_unlock();
1283
1284 return NULL;
1285 }
1286
hci_conn_hash_lookup_big(struct hci_dev * hdev,__u8 handle)1287 static inline struct hci_conn *hci_conn_hash_lookup_big(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 != ISO_LINK)
1297 continue;
1298
1299 /* An ISO_LINK hcon with BDADDR_ANY as destination
1300 * address is a Broadcast connection. A Broadcast
1301 * slave connection is associated with a PA train,
1302 * so the sync_handle can be used to differentiate
1303 * from unicast.
1304 */
1305 if (bacmp(&c->dst, BDADDR_ANY) &&
1306 c->sync_handle == HCI_SYNC_HANDLE_INVALID)
1307 continue;
1308
1309 if (handle == c->iso_qos.bcast.big) {
1310 rcu_read_unlock();
1311 return c;
1312 }
1313 }
1314
1315 rcu_read_unlock();
1316
1317 return NULL;
1318 }
1319
1320 static inline struct hci_conn *
hci_conn_hash_lookup_big_sync_pend(struct hci_dev * hdev,__u8 handle,__u8 num_bis)1321 hci_conn_hash_lookup_big_sync_pend(struct hci_dev *hdev,
1322 __u8 handle, __u8 num_bis)
1323 {
1324 struct hci_conn_hash *h = &hdev->conn_hash;
1325 struct hci_conn *c;
1326
1327 rcu_read_lock();
1328
1329 list_for_each_entry_rcu(c, &h->list, list) {
1330 if (c->type != ISO_LINK)
1331 continue;
1332
1333 if (handle == c->iso_qos.bcast.big && num_bis == c->num_bis) {
1334 rcu_read_unlock();
1335 return c;
1336 }
1337 }
1338
1339 rcu_read_unlock();
1340
1341 return NULL;
1342 }
1343
1344 static inline struct hci_conn *
hci_conn_hash_lookup_big_state(struct hci_dev * hdev,__u8 handle,__u16 state)1345 hci_conn_hash_lookup_big_state(struct hci_dev *hdev, __u8 handle, __u16 state)
1346 {
1347 struct hci_conn_hash *h = &hdev->conn_hash;
1348 struct hci_conn *c;
1349
1350 rcu_read_lock();
1351
1352 list_for_each_entry_rcu(c, &h->list, list) {
1353 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK ||
1354 c->state != state)
1355 continue;
1356
1357 if (handle == c->iso_qos.bcast.big) {
1358 rcu_read_unlock();
1359 return c;
1360 }
1361 }
1362
1363 rcu_read_unlock();
1364
1365 return NULL;
1366 }
1367
1368 static inline struct hci_conn *
hci_conn_hash_lookup_pa_sync_big_handle(struct hci_dev * hdev,__u8 big)1369 hci_conn_hash_lookup_pa_sync_big_handle(struct hci_dev *hdev, __u8 big)
1370 {
1371 struct hci_conn_hash *h = &hdev->conn_hash;
1372 struct hci_conn *c;
1373
1374 rcu_read_lock();
1375
1376 list_for_each_entry_rcu(c, &h->list, list) {
1377 if (c->type != ISO_LINK ||
1378 !test_bit(HCI_CONN_PA_SYNC, &c->flags))
1379 continue;
1380
1381 if (c->iso_qos.bcast.big == big) {
1382 rcu_read_unlock();
1383 return c;
1384 }
1385 }
1386 rcu_read_unlock();
1387
1388 return NULL;
1389 }
1390
1391 static inline struct hci_conn *
hci_conn_hash_lookup_pa_sync_handle(struct hci_dev * hdev,__u16 sync_handle)1392 hci_conn_hash_lookup_pa_sync_handle(struct hci_dev *hdev, __u16 sync_handle)
1393 {
1394 struct hci_conn_hash *h = &hdev->conn_hash;
1395 struct hci_conn *c;
1396
1397 rcu_read_lock();
1398
1399 list_for_each_entry_rcu(c, &h->list, list) {
1400 if (c->type != ISO_LINK)
1401 continue;
1402
1403 /* Ignore the listen hcon, we are looking
1404 * for the child hcon that was created as
1405 * a result of the PA sync established event.
1406 */
1407 if (c->state == BT_LISTEN)
1408 continue;
1409
1410 if (c->sync_handle == sync_handle) {
1411 rcu_read_unlock();
1412 return c;
1413 }
1414 }
1415 rcu_read_unlock();
1416
1417 return NULL;
1418 }
1419
hci_conn_hash_lookup_state(struct hci_dev * hdev,__u8 type,__u16 state)1420 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1421 __u8 type, __u16 state)
1422 {
1423 struct hci_conn_hash *h = &hdev->conn_hash;
1424 struct hci_conn *c;
1425
1426 rcu_read_lock();
1427
1428 list_for_each_entry_rcu(c, &h->list, list) {
1429 if (c->type == type && c->state == state) {
1430 rcu_read_unlock();
1431 return c;
1432 }
1433 }
1434
1435 rcu_read_unlock();
1436
1437 return NULL;
1438 }
1439
1440 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)1441 static inline void hci_conn_hash_list_state(struct hci_dev *hdev,
1442 hci_conn_func_t func, __u8 type,
1443 __u16 state, void *data)
1444 {
1445 struct hci_conn_hash *h = &hdev->conn_hash;
1446 struct hci_conn *c;
1447
1448 if (!func)
1449 return;
1450
1451 rcu_read_lock();
1452
1453 list_for_each_entry_rcu(c, &h->list, list) {
1454 if (c->type == type && c->state == state)
1455 func(c, data);
1456 }
1457
1458 rcu_read_unlock();
1459 }
1460
hci_conn_hash_list_flag(struct hci_dev * hdev,hci_conn_func_t func,__u8 type,__u8 flag,void * data)1461 static inline void hci_conn_hash_list_flag(struct hci_dev *hdev,
1462 hci_conn_func_t func, __u8 type,
1463 __u8 flag, void *data)
1464 {
1465 struct hci_conn_hash *h = &hdev->conn_hash;
1466 struct hci_conn *c;
1467
1468 if (!func)
1469 return;
1470
1471 rcu_read_lock();
1472
1473 list_for_each_entry_rcu(c, &h->list, list) {
1474 if (c->type == type && test_bit(flag, &c->flags))
1475 func(c, data);
1476 }
1477
1478 rcu_read_unlock();
1479 }
1480
hci_lookup_le_connect(struct hci_dev * hdev)1481 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1482 {
1483 struct hci_conn_hash *h = &hdev->conn_hash;
1484 struct hci_conn *c;
1485
1486 rcu_read_lock();
1487
1488 list_for_each_entry_rcu(c, &h->list, list) {
1489 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1490 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1491 rcu_read_unlock();
1492 return c;
1493 }
1494 }
1495
1496 rcu_read_unlock();
1497
1498 return NULL;
1499 }
1500
1501 /* Returns true if an le connection is in the scanning state */
hci_is_le_conn_scanning(struct hci_dev * hdev)1502 static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev)
1503 {
1504 struct hci_conn_hash *h = &hdev->conn_hash;
1505 struct hci_conn *c;
1506
1507 rcu_read_lock();
1508
1509 list_for_each_entry_rcu(c, &h->list, list) {
1510 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1511 test_bit(HCI_CONN_SCANNING, &c->flags)) {
1512 rcu_read_unlock();
1513 return true;
1514 }
1515 }
1516
1517 rcu_read_unlock();
1518
1519 return false;
1520 }
1521
1522 int hci_disconnect(struct hci_conn *conn, __u8 reason);
1523 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1524 void hci_sco_setup(struct hci_conn *conn, __u8 status);
1525 bool hci_iso_setup_path(struct hci_conn *conn);
1526 int hci_le_create_cis_pending(struct hci_dev *hdev);
1527 int hci_conn_check_create_cis(struct hci_conn *conn);
1528
1529 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1530 u8 role, u16 handle);
1531 struct hci_conn *hci_conn_add_unset(struct hci_dev *hdev, int type,
1532 bdaddr_t *dst, u8 role);
1533 void hci_conn_del(struct hci_conn *conn);
1534 void hci_conn_hash_flush(struct hci_dev *hdev);
1535
1536 struct hci_chan *hci_chan_create(struct hci_conn *conn);
1537 void hci_chan_del(struct hci_chan *chan);
1538 void hci_chan_list_flush(struct hci_conn *conn);
1539 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1540
1541 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1542 u8 dst_type, u8 sec_level,
1543 u16 conn_timeout,
1544 enum conn_reasons conn_reason);
1545 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1546 u8 dst_type, bool dst_resolved, u8 sec_level,
1547 u16 conn_timeout, u8 role, u8 phy, u8 sec_phy);
1548 void hci_connect_le_scan_cleanup(struct hci_conn *conn, u8 status);
1549 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1550 u8 sec_level, u8 auth_type,
1551 enum conn_reasons conn_reason, u16 timeout);
1552 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1553 __u16 setting, struct bt_codec *codec,
1554 u16 timeout);
1555 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
1556 __u8 dst_type, struct bt_iso_qos *qos);
1557 struct hci_conn *hci_bind_bis(struct hci_dev *hdev, bdaddr_t *dst,
1558 struct bt_iso_qos *qos,
1559 __u8 base_len, __u8 *base);
1560 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
1561 __u8 dst_type, struct bt_iso_qos *qos);
1562 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
1563 __u8 dst_type, struct bt_iso_qos *qos,
1564 __u8 data_len, __u8 *data);
1565 struct hci_conn *hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst,
1566 __u8 dst_type, __u8 sid, struct bt_iso_qos *qos);
1567 int hci_conn_big_create_sync(struct hci_dev *hdev, struct hci_conn *hcon,
1568 struct bt_iso_qos *qos, __u16 sync_handle,
1569 __u8 num_bis, __u8 bis[]);
1570 int hci_conn_check_link_mode(struct hci_conn *conn);
1571 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1572 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1573 bool initiator);
1574 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1575
1576 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1577
1578 void hci_conn_failed(struct hci_conn *conn, u8 status);
1579 u8 hci_conn_set_handle(struct hci_conn *conn, u16 handle);
1580
1581 void hci_conn_tx_queue(struct hci_conn *conn, struct sk_buff *skb);
1582 void hci_conn_tx_dequeue(struct hci_conn *conn);
1583 void hci_setup_tx_timestamp(struct sk_buff *skb, size_t key_offset,
1584 const struct sockcm_cookie *sockc);
1585
hci_sockcm_init(struct sockcm_cookie * sockc,struct sock * sk)1586 static inline void hci_sockcm_init(struct sockcm_cookie *sockc, struct sock *sk)
1587 {
1588 *sockc = (struct sockcm_cookie) {
1589 .tsflags = READ_ONCE(sk->sk_tsflags),
1590 };
1591 }
1592
1593 /*
1594 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1595 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1596 * working or anything else. They just guarantee that the object is available
1597 * and can be dereferenced. So you can use its locks, local variables and any
1598 * other constant data.
1599 * Before accessing runtime data, you _must_ lock the object and then check that
1600 * it is still running. As soon as you release the locks, the connection might
1601 * get dropped, though.
1602 *
1603 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1604 * how long the underlying connection is held. So every channel that runs on the
1605 * hci_conn object calls this to prevent the connection from disappearing. As
1606 * long as you hold a device, you must also guarantee that you have a valid
1607 * reference to the device via hci_conn_get() (or the initial reference from
1608 * hci_conn_add()).
1609 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1610 * break because nobody cares for that. But this means, we cannot use
1611 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1612 */
1613
hci_conn_get(struct hci_conn * conn)1614 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1615 {
1616 get_device(&conn->dev);
1617 return conn;
1618 }
1619
hci_conn_put(struct hci_conn * conn)1620 static inline void hci_conn_put(struct hci_conn *conn)
1621 {
1622 put_device(&conn->dev);
1623 }
1624
hci_conn_hold(struct hci_conn * conn)1625 static inline struct hci_conn *hci_conn_hold(struct hci_conn *conn)
1626 {
1627 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1628
1629 atomic_inc(&conn->refcnt);
1630 cancel_delayed_work(&conn->disc_work);
1631
1632 return conn;
1633 }
1634
hci_conn_drop(struct hci_conn * conn)1635 static inline void hci_conn_drop(struct hci_conn *conn)
1636 {
1637 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1638
1639 if (atomic_dec_and_test(&conn->refcnt)) {
1640 unsigned long timeo;
1641
1642 switch (conn->type) {
1643 case ACL_LINK:
1644 case LE_LINK:
1645 cancel_delayed_work(&conn->idle_work);
1646 if (conn->state == BT_CONNECTED) {
1647 timeo = conn->disc_timeout;
1648 if (!conn->out)
1649 timeo *= 2;
1650 } else {
1651 timeo = 0;
1652 }
1653 break;
1654
1655 default:
1656 timeo = 0;
1657 break;
1658 }
1659
1660 cancel_delayed_work(&conn->disc_work);
1661 queue_delayed_work(conn->hdev->workqueue,
1662 &conn->disc_work, timeo);
1663 }
1664 }
1665
1666 /* ----- HCI Devices ----- */
hci_dev_put(struct hci_dev * d)1667 static inline void hci_dev_put(struct hci_dev *d)
1668 {
1669 BT_DBG("%s orig refcnt %d", d->name,
1670 kref_read(&d->dev.kobj.kref));
1671
1672 put_device(&d->dev);
1673 }
1674
hci_dev_hold(struct hci_dev * d)1675 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1676 {
1677 BT_DBG("%s orig refcnt %d", d->name,
1678 kref_read(&d->dev.kobj.kref));
1679
1680 get_device(&d->dev);
1681 return d;
1682 }
1683
1684 #define hci_dev_lock(d) mutex_lock(&d->lock)
1685 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
1686
1687 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1688 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1689
hci_get_drvdata(struct hci_dev * hdev)1690 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1691 {
1692 return dev_get_drvdata(&hdev->dev);
1693 }
1694
hci_set_drvdata(struct hci_dev * hdev,void * data)1695 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1696 {
1697 dev_set_drvdata(&hdev->dev, data);
1698 }
1699
hci_get_priv(struct hci_dev * hdev)1700 static inline void *hci_get_priv(struct hci_dev *hdev)
1701 {
1702 return (char *)hdev + sizeof(*hdev);
1703 }
1704
1705 struct hci_dev *hci_dev_get(int index);
1706 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1707
1708 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);
1709
hci_alloc_dev(void)1710 static inline struct hci_dev *hci_alloc_dev(void)
1711 {
1712 return hci_alloc_dev_priv(0);
1713 }
1714
1715 void hci_free_dev(struct hci_dev *hdev);
1716 int hci_register_dev(struct hci_dev *hdev);
1717 void hci_unregister_dev(struct hci_dev *hdev);
1718 void hci_release_dev(struct hci_dev *hdev);
1719 int hci_register_suspend_notifier(struct hci_dev *hdev);
1720 int hci_unregister_suspend_notifier(struct hci_dev *hdev);
1721 int hci_suspend_dev(struct hci_dev *hdev);
1722 int hci_resume_dev(struct hci_dev *hdev);
1723 int hci_reset_dev(struct hci_dev *hdev);
1724 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1725 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1726 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1727 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1728
hci_set_msft_opcode(struct hci_dev * hdev,__u16 opcode)1729 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1730 {
1731 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
1732 hdev->msft_opcode = opcode;
1733 #endif
1734 }
1735
hci_set_aosp_capable(struct hci_dev * hdev)1736 static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1737 {
1738 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
1739 hdev->aosp_capable = true;
1740 #endif
1741 }
1742
hci_devcd_setup(struct hci_dev * hdev)1743 static inline void hci_devcd_setup(struct hci_dev *hdev)
1744 {
1745 #ifdef CONFIG_DEV_COREDUMP
1746 INIT_WORK(&hdev->dump.dump_rx, hci_devcd_rx);
1747 INIT_DELAYED_WORK(&hdev->dump.dump_timeout, hci_devcd_timeout);
1748 skb_queue_head_init(&hdev->dump.dump_q);
1749 #endif
1750 }
1751
1752 int hci_dev_open(__u16 dev);
1753 int hci_dev_close(__u16 dev);
1754 int hci_dev_do_close(struct hci_dev *hdev);
1755 int hci_dev_reset(__u16 dev);
1756 int hci_dev_reset_stat(__u16 dev);
1757 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1758 int hci_get_dev_list(void __user *arg);
1759 int hci_get_dev_info(void __user *arg);
1760 int hci_get_conn_list(void __user *arg);
1761 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1762 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1763 int hci_inquiry(void __user *arg);
1764
1765 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1766 bdaddr_t *bdaddr, u8 type);
1767 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1768 struct list_head *list, bdaddr_t *bdaddr,
1769 u8 type);
1770 struct bdaddr_list_with_flags *
1771 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1772 u8 type);
1773 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1774 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1775 u8 type, u8 *peer_irk, u8 *local_irk);
1776 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1777 u8 type, u32 flags);
1778 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1779 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1780 u8 type);
1781 void hci_bdaddr_list_clear(struct list_head *list);
1782
1783 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1784 bdaddr_t *addr, u8 addr_type);
1785 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1786 bdaddr_t *addr, u8 addr_type);
1787 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1788 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1789 void hci_conn_params_free(struct hci_conn_params *param);
1790
1791 void hci_pend_le_list_del_init(struct hci_conn_params *param);
1792 void hci_pend_le_list_add(struct hci_conn_params *param,
1793 struct list_head *list);
1794 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1795 bdaddr_t *addr,
1796 u8 addr_type);
1797
1798 void hci_uuids_clear(struct hci_dev *hdev);
1799
1800 void hci_link_keys_clear(struct hci_dev *hdev);
1801 u8 *hci_conn_key_enc_size(struct hci_conn *conn);
1802 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1803 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1804 bdaddr_t *bdaddr, u8 *val, u8 type,
1805 u8 pin_len, bool *persistent);
1806 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1807 u8 addr_type, u8 type, u8 authenticated,
1808 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1809 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1810 u8 addr_type, u8 role);
1811 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1812 void hci_smp_ltks_clear(struct hci_dev *hdev);
1813 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1814
1815 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1816 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1817 u8 addr_type);
1818 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1819 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1820 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1821 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1822 void hci_blocked_keys_clear(struct hci_dev *hdev);
1823 void hci_smp_irks_clear(struct hci_dev *hdev);
1824
1825 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1826
1827 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1828 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1829 bdaddr_t *bdaddr, u8 bdaddr_type);
1830 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1831 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1832 u8 *hash256, u8 *rand256);
1833 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1834 u8 bdaddr_type);
1835
1836 void hci_adv_instances_clear(struct hci_dev *hdev);
1837 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1838 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1839 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance,
1840 u32 flags, u16 adv_data_len, u8 *adv_data,
1841 u16 scan_rsp_len, u8 *scan_rsp_data,
1842 u16 timeout, u16 duration, s8 tx_power,
1843 u32 min_interval, u32 max_interval,
1844 u8 mesh_handle);
1845 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance,
1846 u32 flags, u8 data_len, u8 *data,
1847 u32 min_interval, u32 max_interval);
1848 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1849 u16 adv_data_len, u8 *adv_data,
1850 u16 scan_rsp_len, u8 *scan_rsp_data);
1851 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1852 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1853 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance);
1854 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance);
1855
1856 void hci_adv_monitors_clear(struct hci_dev *hdev);
1857 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1858 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1859 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle);
1860 int hci_remove_all_adv_monitor(struct hci_dev *hdev);
1861 bool hci_is_adv_monitoring(struct hci_dev *hdev);
1862 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1863
1864 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1865
1866 void hci_init_sysfs(struct hci_dev *hdev);
1867 void hci_conn_init_sysfs(struct hci_conn *conn);
1868 void hci_conn_add_sysfs(struct hci_conn *conn);
1869 void hci_conn_del_sysfs(struct hci_conn *conn);
1870
1871 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1872 #define GET_HCIDEV_DEV(hdev) ((hdev)->dev.parent)
1873
1874 /* ----- LMP capabilities ----- */
1875 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1876 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1877 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1878 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1879 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1880 #define lmp_sco_capable(dev) ((dev)->features[0][1] & LMP_SCO)
1881 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1882 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1883 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1884 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1885 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1886 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1887 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1888 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1889 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1890 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1891 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1892 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1893 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1894 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1895 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1896 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1897 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1898 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1899 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1900
1901 /* ----- Extended LMP capabilities ----- */
1902 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1903 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1904 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1905 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1906 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1907 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1908
1909 /* ----- Host capabilities ----- */
1910 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1911 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1912 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1913 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1914
1915 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1916 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1917 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1918 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1919 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \
1920 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED))
1921 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \
1922 !adv->rpa_expired)
1923
1924 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1925 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1926
1927 #define le_2m_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_2M))
1928
1929 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1930 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1931
1932 #define le_coded_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_CODED) && \
1933 !test_bit(HCI_QUIRK_BROKEN_LE_CODED, \
1934 &(dev)->quirks))
1935
1936 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1937 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1938
1939 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1940
1941 #define privacy_mode_capable(dev) (ll_privacy_capable(dev) && \
1942 (hdev->commands[39] & 0x04))
1943
1944 #define read_key_size_capable(dev) \
1945 ((dev)->commands[20] & 0x10 && \
1946 !test_bit(HCI_QUIRK_BROKEN_READ_ENC_KEY_SIZE, &hdev->quirks))
1947
1948 #define read_voice_setting_capable(dev) \
1949 ((dev)->commands[9] & 0x04 && \
1950 !test_bit(HCI_QUIRK_BROKEN_READ_VOICE_SETTING, &(dev)->quirks))
1951
1952 /* Use enhanced synchronous connection if command is supported and its quirk
1953 * has not been set.
1954 */
1955 #define enhanced_sync_conn_capable(dev) \
1956 (((dev)->commands[29] & 0x08) && \
1957 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks))
1958
1959 /* Use ext scanning if set ext scan param and ext scan enable is supported */
1960 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1961 ((dev)->commands[37] & 0x40) && \
1962 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks))
1963
1964 /* Use ext create connection if command is supported */
1965 #define use_ext_conn(dev) (((dev)->commands[37] & 0x80) && \
1966 !test_bit(HCI_QUIRK_BROKEN_EXT_CREATE_CONN, &(dev)->quirks))
1967 /* Extended advertising support */
1968 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1969
1970 /* Maximum advertising length */
1971 #define max_adv_len(dev) \
1972 (ext_adv_capable(dev) ? HCI_MAX_EXT_AD_LENGTH : HCI_MAX_AD_LENGTH)
1973
1974 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789:
1975 *
1976 * C24: Mandatory if the LE Controller supports Connection State and either
1977 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported
1978 */
1979 #define use_enhanced_conn_complete(dev) ((ll_privacy_capable(dev) || \
1980 ext_adv_capable(dev)) && \
1981 !test_bit(HCI_QUIRK_BROKEN_EXT_CREATE_CONN, \
1982 &(dev)->quirks))
1983
1984 /* Periodic advertising support */
1985 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV))
1986
1987 /* CIS Master/Slave and BIS support */
1988 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev))
1989 #define cis_capable(dev) \
1990 (cis_central_capable(dev) || cis_peripheral_capable(dev))
1991 #define cis_central_capable(dev) \
1992 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL)
1993 #define cis_peripheral_capable(dev) \
1994 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL)
1995 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER)
1996 #define sync_recv_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_SYNC_RECEIVER)
1997
1998 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \
1999 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks)))
2000
2001 /* ----- HCI protocols ----- */
2002 #define HCI_PROTO_DEFER 0x01
2003
hci_proto_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 type,__u8 * flags)2004 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
2005 __u8 type, __u8 *flags)
2006 {
2007 switch (type) {
2008 case ACL_LINK:
2009 return l2cap_connect_ind(hdev, bdaddr);
2010
2011 case SCO_LINK:
2012 case ESCO_LINK:
2013 return sco_connect_ind(hdev, bdaddr, flags);
2014
2015 case ISO_LINK:
2016 return iso_connect_ind(hdev, bdaddr, flags);
2017
2018 default:
2019 BT_ERR("unknown link type %d", type);
2020 return -EINVAL;
2021 }
2022 }
2023
hci_proto_disconn_ind(struct hci_conn * conn)2024 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
2025 {
2026 if (conn->type != ACL_LINK && conn->type != LE_LINK)
2027 return HCI_ERROR_REMOTE_USER_TERM;
2028
2029 return l2cap_disconn_ind(conn);
2030 }
2031
2032 /* ----- HCI callbacks ----- */
2033 struct hci_cb {
2034 struct list_head list;
2035
2036 char *name;
2037
2038 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
2039 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
2040 void (*security_cfm) (struct hci_conn *conn, __u8 status,
2041 __u8 encrypt);
2042 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
2043 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
2044 };
2045
hci_connect_cfm(struct hci_conn * conn,__u8 status)2046 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
2047 {
2048 struct hci_cb *cb;
2049
2050 mutex_lock(&hci_cb_list_lock);
2051 list_for_each_entry(cb, &hci_cb_list, list) {
2052 if (cb->connect_cfm)
2053 cb->connect_cfm(conn, status);
2054 }
2055 mutex_unlock(&hci_cb_list_lock);
2056
2057 if (conn->connect_cfm_cb)
2058 conn->connect_cfm_cb(conn, status);
2059 }
2060
hci_disconn_cfm(struct hci_conn * conn,__u8 reason)2061 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
2062 {
2063 struct hci_cb *cb;
2064
2065 mutex_lock(&hci_cb_list_lock);
2066 list_for_each_entry(cb, &hci_cb_list, list) {
2067 if (cb->disconn_cfm)
2068 cb->disconn_cfm(conn, reason);
2069 }
2070 mutex_unlock(&hci_cb_list_lock);
2071
2072 if (conn->disconn_cfm_cb)
2073 conn->disconn_cfm_cb(conn, reason);
2074 }
2075
hci_auth_cfm(struct hci_conn * conn,__u8 status)2076 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
2077 {
2078 struct hci_cb *cb;
2079 __u8 encrypt;
2080
2081 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
2082 return;
2083
2084 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
2085
2086 mutex_lock(&hci_cb_list_lock);
2087 list_for_each_entry(cb, &hci_cb_list, list) {
2088 if (cb->security_cfm)
2089 cb->security_cfm(conn, status, encrypt);
2090 }
2091 mutex_unlock(&hci_cb_list_lock);
2092
2093 if (conn->security_cfm_cb)
2094 conn->security_cfm_cb(conn, status);
2095 }
2096
hci_encrypt_cfm(struct hci_conn * conn,__u8 status)2097 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
2098 {
2099 struct hci_cb *cb;
2100 __u8 encrypt;
2101
2102 if (conn->state == BT_CONFIG) {
2103 if (!status)
2104 conn->state = BT_CONNECTED;
2105
2106 hci_connect_cfm(conn, status);
2107 hci_conn_drop(conn);
2108 return;
2109 }
2110
2111 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
2112 encrypt = 0x00;
2113 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
2114 encrypt = 0x02;
2115 else
2116 encrypt = 0x01;
2117
2118 if (!status) {
2119 if (conn->sec_level == BT_SECURITY_SDP)
2120 conn->sec_level = BT_SECURITY_LOW;
2121
2122 if (conn->pending_sec_level > conn->sec_level)
2123 conn->sec_level = conn->pending_sec_level;
2124 }
2125
2126 mutex_lock(&hci_cb_list_lock);
2127 list_for_each_entry(cb, &hci_cb_list, list) {
2128 if (cb->security_cfm)
2129 cb->security_cfm(conn, status, encrypt);
2130 }
2131 mutex_unlock(&hci_cb_list_lock);
2132
2133 if (conn->security_cfm_cb)
2134 conn->security_cfm_cb(conn, status);
2135 }
2136
hci_key_change_cfm(struct hci_conn * conn,__u8 status)2137 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
2138 {
2139 struct hci_cb *cb;
2140
2141 mutex_lock(&hci_cb_list_lock);
2142 list_for_each_entry(cb, &hci_cb_list, list) {
2143 if (cb->key_change_cfm)
2144 cb->key_change_cfm(conn, status);
2145 }
2146 mutex_unlock(&hci_cb_list_lock);
2147 }
2148
hci_role_switch_cfm(struct hci_conn * conn,__u8 status,__u8 role)2149 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
2150 __u8 role)
2151 {
2152 struct hci_cb *cb;
2153
2154 mutex_lock(&hci_cb_list_lock);
2155 list_for_each_entry(cb, &hci_cb_list, list) {
2156 if (cb->role_switch_cfm)
2157 cb->role_switch_cfm(conn, status, role);
2158 }
2159 mutex_unlock(&hci_cb_list_lock);
2160 }
2161
hci_bdaddr_is_rpa(bdaddr_t * bdaddr,u8 addr_type)2162 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
2163 {
2164 if (addr_type != ADDR_LE_DEV_RANDOM)
2165 return false;
2166
2167 if ((bdaddr->b[5] & 0xc0) == 0x40)
2168 return true;
2169
2170 return false;
2171 }
2172
hci_is_identity_address(bdaddr_t * addr,u8 addr_type)2173 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
2174 {
2175 if (addr_type == ADDR_LE_DEV_PUBLIC)
2176 return true;
2177
2178 /* Check for Random Static address type */
2179 if ((addr->b[5] & 0xc0) == 0xc0)
2180 return true;
2181
2182 return false;
2183 }
2184
hci_get_irk(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 addr_type)2185 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
2186 bdaddr_t *bdaddr, u8 addr_type)
2187 {
2188 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
2189 return NULL;
2190
2191 return hci_find_irk_by_rpa(hdev, bdaddr);
2192 }
2193
hci_check_conn_params(u16 min,u16 max,u16 latency,u16 to_multiplier)2194 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
2195 u16 to_multiplier)
2196 {
2197 u16 max_latency;
2198
2199 if (min > max) {
2200 BT_WARN("min %d > max %d", min, max);
2201 return -EINVAL;
2202 }
2203
2204 if (min < 6) {
2205 BT_WARN("min %d < 6", min);
2206 return -EINVAL;
2207 }
2208
2209 if (max > 3200) {
2210 BT_WARN("max %d > 3200", max);
2211 return -EINVAL;
2212 }
2213
2214 if (to_multiplier < 10) {
2215 BT_WARN("to_multiplier %d < 10", to_multiplier);
2216 return -EINVAL;
2217 }
2218
2219 if (to_multiplier > 3200) {
2220 BT_WARN("to_multiplier %d > 3200", to_multiplier);
2221 return -EINVAL;
2222 }
2223
2224 if (max >= to_multiplier * 8) {
2225 BT_WARN("max %d >= to_multiplier %d * 8", max, to_multiplier);
2226 return -EINVAL;
2227 }
2228
2229 max_latency = (to_multiplier * 4 / max) - 1;
2230 if (latency > 499) {
2231 BT_WARN("latency %d > 499", latency);
2232 return -EINVAL;
2233 }
2234
2235 if (latency > max_latency) {
2236 BT_WARN("latency %d > max_latency %d", latency, max_latency);
2237 return -EINVAL;
2238 }
2239
2240 return 0;
2241 }
2242
2243 int hci_register_cb(struct hci_cb *hcb);
2244 int hci_unregister_cb(struct hci_cb *hcb);
2245
2246 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
2247 const void *param);
2248
2249 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
2250 const void *param);
2251 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
2252 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
2253 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb);
2254
2255 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
2256 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event);
2257
2258 u32 hci_conn_get_phy(struct hci_conn *conn);
2259
2260 /* ----- HCI Sockets ----- */
2261 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
2262 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
2263 int flag, struct sock *skip_sk);
2264 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
2265 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
2266 void *data, u16 data_len, ktime_t tstamp,
2267 int flag, struct sock *skip_sk);
2268
2269 void hci_sock_dev_event(struct hci_dev *hdev, int event);
2270
2271 #define HCI_MGMT_VAR_LEN BIT(0)
2272 #define HCI_MGMT_NO_HDEV BIT(1)
2273 #define HCI_MGMT_UNTRUSTED BIT(2)
2274 #define HCI_MGMT_UNCONFIGURED BIT(3)
2275 #define HCI_MGMT_HDEV_OPTIONAL BIT(4)
2276
2277 struct hci_mgmt_handler {
2278 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
2279 u16 data_len);
2280 size_t data_len;
2281 unsigned long flags;
2282 };
2283
2284 struct hci_mgmt_chan {
2285 struct list_head list;
2286 unsigned short channel;
2287 size_t handler_count;
2288 const struct hci_mgmt_handler *handlers;
2289 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
2290 };
2291
2292 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
2293 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
2294
2295 /* Management interface */
2296 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
2297 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
2298 BIT(BDADDR_LE_RANDOM))
2299 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
2300 BIT(BDADDR_LE_PUBLIC) | \
2301 BIT(BDADDR_LE_RANDOM))
2302
2303 /* These LE scan and inquiry parameters were chosen according to LE General
2304 * Discovery Procedure specification.
2305 */
2306 #define DISCOV_LE_SCAN_WIN 0x0012 /* 11.25 msec */
2307 #define DISCOV_LE_SCAN_INT 0x0012 /* 11.25 msec */
2308 #define DISCOV_LE_SCAN_INT_FAST 0x0060 /* 60 msec */
2309 #define DISCOV_LE_SCAN_WIN_FAST 0x0030 /* 30 msec */
2310 #define DISCOV_LE_SCAN_INT_CONN 0x0060 /* 60 msec */
2311 #define DISCOV_LE_SCAN_WIN_CONN 0x0060 /* 60 msec */
2312 #define DISCOV_LE_SCAN_INT_SLOW1 0x0800 /* 1.28 sec */
2313 #define DISCOV_LE_SCAN_WIN_SLOW1 0x0012 /* 11.25 msec */
2314 #define DISCOV_LE_SCAN_INT_SLOW2 0x1000 /* 2.56 sec */
2315 #define DISCOV_LE_SCAN_WIN_SLOW2 0x0024 /* 22.5 msec */
2316 #define DISCOV_CODED_SCAN_INT_FAST 0x0120 /* 180 msec */
2317 #define DISCOV_CODED_SCAN_WIN_FAST 0x0090 /* 90 msec */
2318 #define DISCOV_CODED_SCAN_INT_SLOW1 0x1800 /* 3.84 sec */
2319 #define DISCOV_CODED_SCAN_WIN_SLOW1 0x0036 /* 33.75 msec */
2320 #define DISCOV_CODED_SCAN_INT_SLOW2 0x3000 /* 7.68 sec */
2321 #define DISCOV_CODED_SCAN_WIN_SLOW2 0x006c /* 67.5 msec */
2322 #define DISCOV_LE_TIMEOUT 10240 /* msec */
2323 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
2324 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
2325 #define DISCOV_BREDR_INQUIRY_LEN 0x08
2326 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
2327 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */
2328 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */
2329 #define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */
2330 #define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */
2331 #define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */
2332 #define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */
2333 #define INTERVAL_TO_MS(x) (((x) * 10) / 0x10)
2334
2335 #define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */
2336
2337 void mgmt_fill_version_info(void *ver);
2338 int mgmt_new_settings(struct hci_dev *hdev);
2339 void mgmt_index_added(struct hci_dev *hdev);
2340 void mgmt_index_removed(struct hci_dev *hdev);
2341 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
2342 void mgmt_power_on(struct hci_dev *hdev, int err);
2343 void __mgmt_power_off(struct hci_dev *hdev);
2344 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
2345 bool persistent);
2346 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
2347 u8 *name, u8 name_len);
2348 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
2349 u8 link_type, u8 addr_type, u8 reason,
2350 bool mgmt_connected);
2351 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
2352 u8 link_type, u8 addr_type, u8 status);
2353 void mgmt_connect_failed(struct hci_dev *hdev, struct hci_conn *conn,
2354 u8 status);
2355 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
2356 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2357 u8 status);
2358 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2359 u8 status);
2360 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2361 u8 link_type, u8 addr_type, u32 value,
2362 u8 confirm_hint);
2363 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2364 u8 link_type, u8 addr_type, u8 status);
2365 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2366 u8 link_type, u8 addr_type, u8 status);
2367 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2368 u8 link_type, u8 addr_type);
2369 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2370 u8 link_type, u8 addr_type, u8 status);
2371 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2372 u8 link_type, u8 addr_type, u8 status);
2373 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
2374 u8 link_type, u8 addr_type, u32 passkey,
2375 u8 entered);
2376 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
2377 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
2378 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
2379 u8 status);
2380 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
2381 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2382 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
2383 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len,
2384 u64 instant);
2385 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2386 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
2387 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
2388 void mgmt_suspending(struct hci_dev *hdev, u8 state);
2389 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
2390 u8 addr_type);
2391 bool mgmt_powering_down(struct hci_dev *hdev);
2392 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
2393 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
2394 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
2395 bool persistent);
2396 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
2397 u8 bdaddr_type, u8 store_hint, u16 min_interval,
2398 u16 max_interval, u16 latency, u16 timeout);
2399 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
2400 bool mgmt_get_connectable(struct hci_dev *hdev);
2401 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
2402 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
2403 u8 instance);
2404 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
2405 u8 instance);
2406 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle);
2407 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
2408 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle,
2409 bdaddr_t *bdaddr, u8 addr_type);
2410
2411 int hci_abort_conn(struct hci_conn *conn, u8 reason);
2412 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
2413 u16 to_multiplier);
2414 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
2415 __u8 ltk[16], __u8 key_size);
2416
2417 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
2418 u8 *bdaddr_type);
2419
2420 #define SCO_AIRMODE_MASK 0x0003
2421 #define SCO_AIRMODE_CVSD 0x0000
2422 #define SCO_AIRMODE_TRANSP 0x0003
2423
2424 #define LOCAL_CODEC_ACL_MASK BIT(0)
2425 #define LOCAL_CODEC_SCO_MASK BIT(1)
2426
2427 #define TRANSPORT_TYPE_MAX 0x04
2428
2429 #endif /* __HCI_CORE_H */
2430