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 cis_num;
133 unsigned int bis_num;
134 unsigned int pa_num;
135 unsigned int le_num;
136 unsigned int le_num_peripheral;
137 };
138
139 struct bdaddr_list {
140 struct list_head list;
141 bdaddr_t bdaddr;
142 u8 bdaddr_type;
143 };
144
145 struct codec_list {
146 struct list_head list;
147 u8 id;
148 __u16 cid;
149 __u16 vid;
150 u8 transport;
151 u8 num_caps;
152 u32 len;
153 struct hci_codec_caps caps[];
154 };
155
156 struct bdaddr_list_with_irk {
157 struct list_head list;
158 bdaddr_t bdaddr;
159 u8 bdaddr_type;
160 u8 peer_irk[16];
161 u8 local_irk[16];
162 };
163
164 /* Bitmask of connection flags */
165 enum hci_conn_flags {
166 HCI_CONN_FLAG_REMOTE_WAKEUP = BIT(0),
167 HCI_CONN_FLAG_DEVICE_PRIVACY = BIT(1),
168 HCI_CONN_FLAG_ADDRESS_RESOLUTION = BIT(2),
169 HCI_CONN_FLAG_PAST = BIT(3),
170 };
171 typedef u8 hci_conn_flags_t;
172
173 struct bdaddr_list_with_flags {
174 struct list_head list;
175 bdaddr_t bdaddr;
176 u8 bdaddr_type;
177 hci_conn_flags_t flags;
178 };
179
180 struct bt_uuid {
181 struct list_head list;
182 u8 uuid[16];
183 u8 size;
184 u8 svc_hint;
185 };
186
187 struct blocked_key {
188 struct list_head list;
189 struct rcu_head rcu;
190 u8 type;
191 u8 val[16];
192 };
193
194 struct smp_csrk {
195 bdaddr_t bdaddr;
196 u8 bdaddr_type;
197 u8 type;
198 u8 val[16];
199 };
200
201 struct smp_ltk {
202 struct list_head list;
203 struct rcu_head rcu;
204 bdaddr_t bdaddr;
205 u8 bdaddr_type;
206 u8 authenticated;
207 u8 type;
208 u8 enc_size;
209 __le16 ediv;
210 __le64 rand;
211 u8 val[16];
212 };
213
214 struct smp_irk {
215 struct list_head list;
216 struct rcu_head rcu;
217 bdaddr_t rpa;
218 bdaddr_t bdaddr;
219 u8 addr_type;
220 u8 val[16];
221 };
222
223 struct link_key {
224 struct list_head list;
225 struct rcu_head rcu;
226 bdaddr_t bdaddr;
227 u8 type;
228 u8 val[HCI_LINK_KEY_SIZE];
229 u8 pin_len;
230 };
231
232 struct oob_data {
233 struct list_head list;
234 bdaddr_t bdaddr;
235 u8 bdaddr_type;
236 u8 present;
237 u8 hash192[16];
238 u8 rand192[16];
239 u8 hash256[16];
240 u8 rand256[16];
241 };
242
243 struct adv_info {
244 struct list_head list;
245 bool enabled;
246 bool pending;
247 bool periodic;
248 bool periodic_enabled;
249 __u8 mesh;
250 __u8 instance;
251 __u8 handle;
252 __u8 sid;
253 __u32 flags;
254 __u16 timeout;
255 __u16 remaining_time;
256 __u16 duration;
257 __u16 adv_data_len;
258 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
259 bool adv_data_changed;
260 __u16 scan_rsp_len;
261 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
262 bool scan_rsp_changed;
263 __u16 per_adv_data_len;
264 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
265 __s8 tx_power;
266 __u32 min_interval;
267 __u32 max_interval;
268 bdaddr_t random_addr;
269 bool rpa_expired;
270 struct delayed_work rpa_expired_cb;
271 };
272
273 struct tx_queue {
274 struct sk_buff_head queue;
275 unsigned int extra;
276 unsigned int tracked;
277 };
278
279 #define HCI_MAX_ADV_INSTANCES 5
280 #define HCI_DEFAULT_ADV_DURATION 2
281
282 #define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F
283
284 #define DATA_CMP(_d1, _l1, _d2, _l2) \
285 (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2)
286
287 #define ADV_DATA_CMP(_adv, _data, _len) \
288 DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len)
289
290 #define SCAN_RSP_CMP(_adv, _data, _len) \
291 DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len)
292
293 struct monitored_device {
294 struct list_head list;
295
296 bdaddr_t bdaddr;
297 __u8 addr_type;
298 __u16 handle;
299 bool notified;
300 };
301
302 struct adv_pattern {
303 struct list_head list;
304 __u8 ad_type;
305 __u8 offset;
306 __u8 length;
307 __u8 value[HCI_MAX_EXT_AD_LENGTH];
308 };
309
310 struct adv_rssi_thresholds {
311 __s8 low_threshold;
312 __s8 high_threshold;
313 __u16 low_threshold_timeout;
314 __u16 high_threshold_timeout;
315 __u8 sampling_period;
316 };
317
318 struct adv_monitor {
319 struct list_head patterns;
320 struct adv_rssi_thresholds rssi;
321 __u16 handle;
322
323 enum {
324 ADV_MONITOR_STATE_NOT_REGISTERED,
325 ADV_MONITOR_STATE_REGISTERED,
326 ADV_MONITOR_STATE_OFFLOADED
327 } state;
328 };
329
330 #define HCI_MIN_ADV_MONITOR_HANDLE 1
331 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32
332 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16
333 #define HCI_ADV_MONITOR_EXT_NONE 1
334 #define HCI_ADV_MONITOR_EXT_MSFT 2
335
336 #define HCI_MAX_SHORT_NAME_LENGTH 10
337
338 #define HCI_CONN_HANDLE_MAX 0x0eff
339 #define HCI_CONN_HANDLE_UNSET(_handle) (_handle > HCI_CONN_HANDLE_MAX)
340
341 /* Min encryption key size to match with SMP */
342 #define HCI_MIN_ENC_KEY_SIZE 7
343
344 /* Default LE RPA expiry time, 15 minutes */
345 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
346
347 /* Default min/max age of connection information (1s/3s) */
348 #define DEFAULT_CONN_INFO_MIN_AGE 1000
349 #define DEFAULT_CONN_INFO_MAX_AGE 3000
350 /* Default authenticated payload timeout 30s */
351 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8
352
353 #define HCI_MAX_PAGES 3
354
355 struct hci_dev {
356 struct list_head list;
357 struct srcu_struct srcu;
358 struct mutex lock;
359
360 struct ida unset_handle_ida;
361
362 const char *name;
363 unsigned long flags;
364 __u16 id;
365 __u8 bus;
366 bdaddr_t bdaddr;
367 bdaddr_t setup_addr;
368 bdaddr_t public_addr;
369 bdaddr_t random_addr;
370 bdaddr_t static_addr;
371 __u8 adv_addr_type;
372 __u8 dev_name[HCI_MAX_NAME_LENGTH];
373 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
374 __u8 eir[HCI_MAX_EIR_LENGTH];
375 __u16 appearance;
376 __u8 dev_class[3];
377 __u8 major_class;
378 __u8 minor_class;
379 __u8 max_page;
380 __u8 features[HCI_MAX_PAGES][8];
381 __u8 le_features[248];
382 __u8 le_accept_list_size;
383 __u8 le_resolv_list_size;
384 __u8 le_num_of_adv_sets;
385 __u8 le_states[8];
386 __u8 mesh_ad_types[16];
387 __u8 mesh_send_ref;
388 __u8 commands[64];
389 __u8 hci_ver;
390 __u16 hci_rev;
391 __u8 lmp_ver;
392 __u16 manufacturer;
393 __u16 lmp_subver;
394 __u16 voice_setting;
395 __u8 num_iac;
396 __u16 stored_max_keys;
397 __u16 stored_num_keys;
398 __u8 io_capability;
399 __s8 inq_tx_power;
400 __u8 err_data_reporting;
401 __u16 page_scan_interval;
402 __u16 page_scan_window;
403 __u8 page_scan_type;
404 __u8 le_adv_channel_map;
405 __u16 le_adv_min_interval;
406 __u16 le_adv_max_interval;
407 __u8 le_scan_type;
408 __u16 le_scan_interval;
409 __u16 le_scan_window;
410 __u16 le_scan_int_suspend;
411 __u16 le_scan_window_suspend;
412 __u16 le_scan_int_discovery;
413 __u16 le_scan_window_discovery;
414 __u16 le_scan_int_adv_monitor;
415 __u16 le_scan_window_adv_monitor;
416 __u16 le_scan_int_connect;
417 __u16 le_scan_window_connect;
418 __u16 le_conn_min_interval;
419 __u16 le_conn_max_interval;
420 __u16 le_conn_latency;
421 __u16 le_supv_timeout;
422 __u16 le_def_tx_len;
423 __u16 le_def_tx_time;
424 __u16 le_max_tx_len;
425 __u16 le_max_tx_time;
426 __u16 le_max_rx_len;
427 __u16 le_max_rx_time;
428 __u8 le_max_key_size;
429 __u8 le_min_key_size;
430 __u16 discov_interleaved_timeout;
431 __u16 conn_info_min_age;
432 __u16 conn_info_max_age;
433 __u16 auth_payload_timeout;
434 __u8 min_enc_key_size;
435 __u8 max_enc_key_size;
436 __u8 pairing_opts;
437 __u8 ssp_debug_mode;
438 __u8 hw_error_code;
439 __u32 clock;
440 __u16 advmon_allowlist_duration;
441 __u16 advmon_no_filter_duration;
442 __u8 enable_advmon_interleave_scan;
443
444 __u16 devid_source;
445 __u16 devid_vendor;
446 __u16 devid_product;
447 __u16 devid_version;
448
449 __u8 def_page_scan_type;
450 __u16 def_page_scan_int;
451 __u16 def_page_scan_window;
452 __u8 def_inq_scan_type;
453 __u16 def_inq_scan_int;
454 __u16 def_inq_scan_window;
455 __u16 def_br_lsto;
456 __u16 def_page_timeout;
457 __u16 def_multi_adv_rotation_duration;
458 __u16 def_le_autoconnect_timeout;
459 __s8 min_le_tx_power;
460 __s8 max_le_tx_power;
461
462 __u16 pkt_type;
463 __u16 esco_type;
464 __u16 link_policy;
465 __u16 link_mode;
466
467 __u32 idle_timeout;
468 __u16 sniff_min_interval;
469 __u16 sniff_max_interval;
470
471 unsigned int auto_accept_delay;
472
473 DECLARE_BITMAP(quirk_flags, __HCI_NUM_QUIRKS);
474
475 atomic_t cmd_cnt;
476 unsigned int acl_cnt;
477 unsigned int sco_cnt;
478 unsigned int le_cnt;
479 unsigned int iso_cnt;
480
481 unsigned int acl_mtu;
482 unsigned int sco_mtu;
483 unsigned int le_mtu;
484 unsigned int iso_mtu;
485 unsigned int acl_pkts;
486 unsigned int sco_pkts;
487 unsigned int le_pkts;
488 unsigned int iso_pkts;
489
490 unsigned long acl_last_tx;
491 unsigned long le_last_tx;
492 unsigned long iso_last_tx;
493
494 __u8 le_tx_def_phys;
495 __u8 le_rx_def_phys;
496
497 struct workqueue_struct *workqueue;
498 struct workqueue_struct *req_workqueue;
499
500 struct work_struct power_on;
501 struct delayed_work power_off;
502 struct work_struct error_reset;
503 struct work_struct cmd_sync_work;
504 struct list_head cmd_sync_work_list;
505 struct mutex cmd_sync_work_lock;
506 struct mutex unregister_lock;
507 struct work_struct cmd_sync_cancel_work;
508 struct work_struct reenable_adv_work;
509
510 __u16 discov_timeout;
511 struct delayed_work discov_off;
512
513 struct delayed_work service_cache;
514
515 struct delayed_work cmd_timer;
516 struct delayed_work ncmd_timer;
517
518 struct work_struct rx_work;
519 struct work_struct cmd_work;
520 struct work_struct tx_work;
521
522 struct delayed_work le_scan_disable;
523
524 struct sk_buff_head rx_q;
525 struct sk_buff_head raw_q;
526 struct sk_buff_head cmd_q;
527
528 struct sk_buff *sent_cmd;
529 struct sk_buff *recv_event;
530
531 struct mutex req_lock;
532 wait_queue_head_t req_wait_q;
533 __u32 req_status;
534 __u32 req_result;
535 struct sk_buff *req_skb;
536 struct sk_buff *req_rsp;
537
538 void *smp_data;
539 void *smp_bredr_data;
540
541 struct discovery_state discovery;
542
543 bool discovery_paused;
544 int advertising_old_state;
545 bool advertising_paused;
546
547 struct notifier_block suspend_notifier;
548 enum suspended_state suspend_state_next;
549 enum suspended_state suspend_state;
550 bool scanning_paused;
551 bool suspended;
552 u8 wake_reason;
553 bdaddr_t wake_addr;
554 u8 wake_addr_type;
555
556 struct hci_conn_hash conn_hash;
557
558 struct list_head mesh_pending;
559 struct mutex mgmt_pending_lock;
560 struct list_head mgmt_pending;
561 struct list_head reject_list;
562 struct list_head accept_list;
563 struct list_head uuids;
564 struct list_head link_keys;
565 struct list_head long_term_keys;
566 struct list_head identity_resolving_keys;
567 struct list_head remote_oob_data;
568 struct list_head le_accept_list;
569 struct list_head le_resolv_list;
570 struct list_head le_conn_params;
571 struct list_head pend_le_conns;
572 struct list_head pend_le_reports;
573 struct list_head blocked_keys;
574 struct list_head local_codecs;
575
576 struct hci_dev_stats stat;
577
578 atomic_t promisc;
579
580 const char *hw_info;
581 const char *fw_info;
582 struct dentry *debugfs;
583
584 struct hci_devcoredump dump;
585
586 struct device dev;
587
588 struct rfkill *rfkill;
589
590 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
591 hci_conn_flags_t conn_flags;
592
593 __s8 adv_tx_power;
594 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
595 __u8 adv_data_len;
596 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
597 __u8 scan_rsp_data_len;
598 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
599 __u8 per_adv_data_len;
600
601 struct list_head adv_instances;
602 unsigned int adv_instance_cnt;
603 __u8 cur_adv_instance;
604 __u16 adv_instance_timeout;
605 struct delayed_work adv_instance_expire;
606
607 struct idr adv_monitors_idr;
608 unsigned int adv_monitors_cnt;
609
610 __u8 irk[16];
611 __u32 rpa_timeout;
612 struct delayed_work rpa_expired;
613 bdaddr_t rpa;
614
615 struct delayed_work mesh_send_done;
616
617 enum {
618 INTERLEAVE_SCAN_NONE,
619 INTERLEAVE_SCAN_NO_FILTER,
620 INTERLEAVE_SCAN_ALLOWLIST
621 } interleave_scan_state;
622
623 struct delayed_work interleave_scan;
624
625 struct list_head monitored_devices;
626 bool advmon_pend_notify;
627
628 struct hci_drv *hci_drv;
629
630 #if IS_ENABLED(CONFIG_BT_LEDS)
631 struct led_trigger *power_led;
632 #endif
633
634 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
635 __u16 msft_opcode;
636 void *msft_data;
637 bool msft_curve_validity;
638 #endif
639
640 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
641 bool aosp_capable;
642 bool aosp_quality_report;
643 #endif
644
645 int (*open)(struct hci_dev *hdev);
646 int (*close)(struct hci_dev *hdev);
647 int (*flush)(struct hci_dev *hdev);
648 int (*setup)(struct hci_dev *hdev);
649 int (*shutdown)(struct hci_dev *hdev);
650 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
651 void (*notify)(struct hci_dev *hdev, unsigned int evt);
652 void (*hw_error)(struct hci_dev *hdev, u8 code);
653 int (*post_init)(struct hci_dev *hdev);
654 int (*set_diag)(struct hci_dev *hdev, bool enable);
655 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
656 void (*reset)(struct hci_dev *hdev);
657 bool (*wakeup)(struct hci_dev *hdev);
658 int (*set_quality_report)(struct hci_dev *hdev, bool enable);
659 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path);
660 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type,
661 struct bt_codec *codec, __u8 *vnd_len,
662 __u8 **vnd_data);
663 u8 (*classify_pkt_type)(struct hci_dev *hdev, struct sk_buff *skb);
664 };
665
666 #define hci_set_quirk(hdev, nr) set_bit((nr), (hdev)->quirk_flags)
667 #define hci_clear_quirk(hdev, nr) clear_bit((nr), (hdev)->quirk_flags)
668 #define hci_test_quirk(hdev, nr) test_bit((nr), (hdev)->quirk_flags)
669
670 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
671
672 enum conn_reasons {
673 CONN_REASON_PAIR_DEVICE,
674 CONN_REASON_L2CAP_CHAN,
675 CONN_REASON_SCO_CONNECT,
676 CONN_REASON_ISO_CONNECT,
677 };
678
679 struct hci_conn {
680 struct list_head list;
681
682 atomic_t refcnt;
683
684 bdaddr_t dst;
685 __u8 dst_type;
686 bdaddr_t src;
687 __u8 src_type;
688 bdaddr_t init_addr;
689 __u8 init_addr_type;
690 bdaddr_t resp_addr;
691 __u8 resp_addr_type;
692 __u8 adv_instance;
693 __u16 handle;
694 __u16 sync_handle;
695 __u8 sid;
696 __u16 state;
697 __u16 mtu;
698 __u8 mode;
699 __u8 type;
700 __u8 role;
701 bool out;
702 __u8 attempt;
703 __u8 dev_class[3];
704 __u8 features[HCI_MAX_PAGES][8];
705 __u8 le_features[248];
706 __u16 pkt_type;
707 __u16 link_policy;
708 __u8 key_type;
709 __u8 auth_type;
710 __u8 sec_level;
711 __u8 pending_sec_level;
712 __u8 pin_length;
713 __u8 enc_key_size;
714 __u8 io_capability;
715 __u32 passkey_notify;
716 __u8 passkey_entered;
717 __u16 disc_timeout;
718 __u16 conn_timeout;
719 __u16 setting;
720 __u16 auth_payload_timeout;
721 __u16 le_conn_min_interval;
722 __u16 le_conn_max_interval;
723 __u16 le_conn_interval;
724 __u16 le_conn_latency;
725 __u16 le_supv_timeout;
726 __u8 le_adv_data[HCI_MAX_EXT_AD_LENGTH];
727 __u8 le_adv_data_len;
728 __u8 le_per_adv_data[HCI_MAX_PER_AD_TOT_LEN];
729 __u16 le_per_adv_data_len;
730 __u16 le_per_adv_data_offset;
731 __u8 le_adv_phy;
732 __u8 le_adv_sec_phy;
733 __u8 le_tx_phy;
734 __u8 le_rx_phy;
735 __s8 rssi;
736 __s8 tx_power;
737 __s8 max_tx_power;
738 struct bt_iso_qos iso_qos;
739 __u8 num_bis;
740 __u8 bis[HCI_MAX_ISO_BIS];
741
742 unsigned long flags;
743
744 enum conn_reasons conn_reason;
745 __u8 abort_reason;
746
747 __u32 clock;
748 __u16 clock_accuracy;
749
750 unsigned long conn_info_timestamp;
751
752 __u8 remote_cap;
753 __u8 remote_auth;
754
755 unsigned int sent;
756
757 struct sk_buff_head data_q;
758 struct list_head chan_list;
759
760 struct tx_queue tx_q;
761
762 struct delayed_work disc_work;
763 struct delayed_work auto_accept_work;
764 struct delayed_work idle_work;
765 struct delayed_work le_conn_timeout;
766
767 struct device dev;
768 struct dentry *debugfs;
769
770 struct hci_dev *hdev;
771 void *l2cap_data;
772 void *sco_data;
773 void *iso_data;
774
775 struct list_head link_list;
776 struct hci_conn *parent;
777 struct hci_link *link;
778
779 struct bt_codec codec;
780
781 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
782 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
783 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
784
785 void (*cleanup)(struct hci_conn *conn);
786 };
787
788 struct hci_link {
789 struct list_head list;
790 struct hci_conn *conn;
791 };
792
793 struct hci_chan {
794 struct list_head list;
795 __u16 handle;
796 struct hci_conn *conn;
797 struct sk_buff_head data_q;
798 unsigned int sent;
799 __u8 state;
800 };
801
802 struct hci_conn_params {
803 struct list_head list;
804 struct list_head action;
805
806 bdaddr_t addr;
807 u8 addr_type;
808
809 u16 conn_min_interval;
810 u16 conn_max_interval;
811 u16 conn_latency;
812 u16 supervision_timeout;
813
814 enum {
815 HCI_AUTO_CONN_DISABLED,
816 HCI_AUTO_CONN_REPORT,
817 HCI_AUTO_CONN_DIRECT,
818 HCI_AUTO_CONN_ALWAYS,
819 HCI_AUTO_CONN_LINK_LOSS,
820 HCI_AUTO_CONN_EXPLICIT,
821 } auto_connect;
822
823 struct hci_conn *conn;
824 bool explicit_connect;
825 /* Accessed without hdev->lock: */
826 hci_conn_flags_t flags;
827 u8 privacy_mode;
828 };
829
830 extern struct list_head hci_dev_list;
831 extern struct list_head hci_cb_list;
832 extern rwlock_t hci_dev_list_lock;
833 extern struct mutex hci_cb_list_lock;
834
835 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
836 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
837 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
838 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
839 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
840 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
841 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
842
843 #define hci_dev_clear_volatile_flags(hdev) \
844 do { \
845 hci_dev_clear_flag((hdev), HCI_LE_SCAN); \
846 hci_dev_clear_flag((hdev), HCI_LE_ADV); \
847 hci_dev_clear_flag((hdev), HCI_LL_RPA_RESOLUTION); \
848 hci_dev_clear_flag((hdev), HCI_PERIODIC_INQ); \
849 hci_dev_clear_flag((hdev), HCI_QUALITY_REPORT); \
850 } while (0)
851
852 #define hci_dev_le_state_simultaneous(hdev) \
853 (!hci_test_quirk((hdev), HCI_QUIRK_BROKEN_LE_STATES) && \
854 ((hdev)->le_states[4] & 0x08) && /* Central */ \
855 ((hdev)->le_states[4] & 0x40) && /* Peripheral */ \
856 ((hdev)->le_states[3] & 0x10)) /* Simultaneous */
857
858 /* ----- HCI interface to upper protocols ----- */
859 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
860 int l2cap_disconn_ind(struct hci_conn *hcon);
861 int l2cap_recv_acldata(struct hci_dev *hdev, u16 handle, struct sk_buff *skb,
862 u16 flags);
863
864 #if IS_ENABLED(CONFIG_BT_BREDR)
865 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
866 int sco_recv_scodata(struct hci_dev *hdev, u16 handle, struct sk_buff *skb);
867 #else
sco_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 * flags)868 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
869 __u8 *flags)
870 {
871 return 0;
872 }
873
sco_recv_scodata(struct hci_dev * hdev,u16 handle,struct sk_buff * skb)874 static inline int sco_recv_scodata(struct hci_dev *hdev, u16 handle,
875 struct sk_buff *skb)
876 {
877 kfree_skb(skb);
878 return -ENOENT;
879 }
880 #endif
881
882 #if IS_ENABLED(CONFIG_BT_LE)
883 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
884 int iso_recv(struct hci_dev *hdev, u16 handle, struct sk_buff *skb,
885 u16 flags);
886 #else
iso_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 * flags)887 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
888 __u8 *flags)
889 {
890 return 0;
891 }
892
iso_recv(struct hci_dev * hdev,u16 handle,struct sk_buff * skb,u16 flags)893 static inline int iso_recv(struct hci_dev *hdev, u16 handle,
894 struct sk_buff *skb, u16 flags)
895 {
896 kfree_skb(skb);
897 return -ENOENT;
898 }
899 #endif
900
901 /* ----- Inquiry cache ----- */
902 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
903 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
904
discovery_init(struct hci_dev * hdev)905 static inline void discovery_init(struct hci_dev *hdev)
906 {
907 spin_lock_init(&hdev->discovery.lock);
908 hdev->discovery.state = DISCOVERY_STOPPED;
909 INIT_LIST_HEAD(&hdev->discovery.all);
910 INIT_LIST_HEAD(&hdev->discovery.unknown);
911 INIT_LIST_HEAD(&hdev->discovery.resolve);
912 hdev->discovery.report_invalid_rssi = true;
913 hdev->discovery.rssi = HCI_RSSI_INVALID;
914 }
915
hci_discovery_filter_clear(struct hci_dev * hdev)916 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
917 {
918 hdev->discovery.result_filtering = false;
919 hdev->discovery.report_invalid_rssi = true;
920 hdev->discovery.rssi = HCI_RSSI_INVALID;
921 hdev->discovery.uuid_count = 0;
922
923 spin_lock(&hdev->discovery.lock);
924 kfree(hdev->discovery.uuids);
925 hdev->discovery.uuids = NULL;
926 spin_unlock(&hdev->discovery.lock);
927 }
928
929 bool hci_discovery_active(struct hci_dev *hdev);
930
931 void hci_discovery_set_state(struct hci_dev *hdev, int state);
932
inquiry_cache_empty(struct hci_dev * hdev)933 static inline int inquiry_cache_empty(struct hci_dev *hdev)
934 {
935 return list_empty(&hdev->discovery.all);
936 }
937
inquiry_cache_age(struct hci_dev * hdev)938 static inline long inquiry_cache_age(struct hci_dev *hdev)
939 {
940 struct discovery_state *c = &hdev->discovery;
941 return jiffies - c->timestamp;
942 }
943
inquiry_entry_age(struct inquiry_entry * e)944 static inline long inquiry_entry_age(struct inquiry_entry *e)
945 {
946 return jiffies - e->timestamp;
947 }
948
949 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
950 bdaddr_t *bdaddr);
951 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
952 bdaddr_t *bdaddr);
953 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
954 bdaddr_t *bdaddr,
955 int state);
956 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
957 struct inquiry_entry *ie);
958 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
959 bool name_known);
960 void hci_inquiry_cache_flush(struct hci_dev *hdev);
961
962 /* ----- HCI Connections ----- */
963 enum {
964 HCI_CONN_AUTH_PEND,
965 HCI_CONN_ENCRYPT_PEND,
966 HCI_CONN_RSWITCH_PEND,
967 HCI_CONN_MODE_CHANGE_PEND,
968 HCI_CONN_SCO_SETUP_PEND,
969 HCI_CONN_MGMT_CONNECTED,
970 HCI_CONN_SSP_ENABLED,
971 HCI_CONN_SC_ENABLED,
972 HCI_CONN_AES_CCM,
973 HCI_CONN_POWER_SAVE,
974 HCI_CONN_FLUSH_KEY,
975 HCI_CONN_ENCRYPT,
976 HCI_CONN_AUTH,
977 HCI_CONN_SECURE,
978 HCI_CONN_FIPS,
979 HCI_CONN_STK_ENCRYPT,
980 HCI_CONN_AUTH_INITIATOR,
981 HCI_CONN_DROP,
982 HCI_CONN_CANCEL,
983 HCI_CONN_PARAM_REMOVAL_PEND,
984 HCI_CONN_NEW_LINK_KEY,
985 HCI_CONN_SCANNING,
986 HCI_CONN_AUTH_FAILURE,
987 HCI_CONN_PER_ADV,
988 HCI_CONN_BIG_CREATED,
989 HCI_CONN_CREATE_CIS,
990 HCI_CONN_CREATE_BIG_SYNC,
991 HCI_CONN_BIG_SYNC,
992 HCI_CONN_BIG_SYNC_FAILED,
993 HCI_CONN_CREATE_PA_SYNC,
994 HCI_CONN_PA_SYNC,
995 HCI_CONN_PA_SYNC_FAILED,
996 };
997
hci_conn_ssp_enabled(struct hci_conn * conn)998 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
999 {
1000 struct hci_dev *hdev = conn->hdev;
1001 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
1002 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
1003 }
1004
hci_conn_sc_enabled(struct hci_conn * conn)1005 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
1006 {
1007 struct hci_dev *hdev = conn->hdev;
1008 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
1009 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
1010 }
1011
hci_conn_hash_add(struct hci_dev * hdev,struct hci_conn * c)1012 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
1013 {
1014 struct hci_conn_hash *h = &hdev->conn_hash;
1015 list_add_tail_rcu(&c->list, &h->list);
1016 switch (c->type) {
1017 case ACL_LINK:
1018 h->acl_num++;
1019 break;
1020 case LE_LINK:
1021 h->le_num++;
1022 if (c->role == HCI_ROLE_SLAVE)
1023 h->le_num_peripheral++;
1024 break;
1025 case SCO_LINK:
1026 case ESCO_LINK:
1027 h->sco_num++;
1028 break;
1029 case CIS_LINK:
1030 h->cis_num++;
1031 break;
1032 case BIS_LINK:
1033 h->bis_num++;
1034 break;
1035 case PA_LINK:
1036 h->pa_num++;
1037 break;
1038 }
1039 }
1040
hci_conn_hash_del(struct hci_dev * hdev,struct hci_conn * c)1041 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
1042 {
1043 struct hci_conn_hash *h = &hdev->conn_hash;
1044
1045 list_del_rcu(&c->list);
1046 synchronize_rcu();
1047
1048 switch (c->type) {
1049 case ACL_LINK:
1050 h->acl_num--;
1051 break;
1052 case LE_LINK:
1053 h->le_num--;
1054 if (c->role == HCI_ROLE_SLAVE)
1055 h->le_num_peripheral--;
1056 break;
1057 case SCO_LINK:
1058 case ESCO_LINK:
1059 h->sco_num--;
1060 break;
1061 case CIS_LINK:
1062 h->cis_num--;
1063 break;
1064 case BIS_LINK:
1065 h->bis_num--;
1066 break;
1067 case PA_LINK:
1068 h->pa_num--;
1069 break;
1070 }
1071 }
1072
hci_conn_num(struct hci_dev * hdev,__u8 type)1073 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
1074 {
1075 struct hci_conn_hash *h = &hdev->conn_hash;
1076 switch (type) {
1077 case ACL_LINK:
1078 return h->acl_num;
1079 case LE_LINK:
1080 return h->le_num;
1081 case SCO_LINK:
1082 case ESCO_LINK:
1083 return h->sco_num;
1084 case CIS_LINK:
1085 return h->cis_num;
1086 case BIS_LINK:
1087 return h->bis_num;
1088 case PA_LINK:
1089 return h->pa_num;
1090 default:
1091 return 0;
1092 }
1093 }
1094
hci_conn_count(struct hci_dev * hdev)1095 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
1096 {
1097 struct hci_conn_hash *c = &hdev->conn_hash;
1098
1099 return c->acl_num + c->sco_num + c->le_num + c->cis_num + c->bis_num +
1100 c->pa_num;
1101 }
1102
hci_iso_count(struct hci_dev * hdev)1103 static inline unsigned int hci_iso_count(struct hci_dev *hdev)
1104 {
1105 struct hci_conn_hash *c = &hdev->conn_hash;
1106
1107 return c->cis_num + c->bis_num;
1108 }
1109
hci_conn_valid(struct hci_dev * hdev,struct hci_conn * conn)1110 static inline bool hci_conn_valid(struct hci_dev *hdev, struct hci_conn *conn)
1111 {
1112 struct hci_conn_hash *h = &hdev->conn_hash;
1113 struct hci_conn *c;
1114
1115 rcu_read_lock();
1116
1117 list_for_each_entry_rcu(c, &h->list, list) {
1118 if (c == conn) {
1119 rcu_read_unlock();
1120 return true;
1121 }
1122 }
1123 rcu_read_unlock();
1124
1125 return false;
1126 }
1127
hci_conn_lookup_type(struct hci_dev * hdev,__u16 handle)1128 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
1129 {
1130 struct hci_conn_hash *h = &hdev->conn_hash;
1131 struct hci_conn *c;
1132 __u8 type = INVALID_LINK;
1133
1134 rcu_read_lock();
1135
1136 list_for_each_entry_rcu(c, &h->list, list) {
1137 if (c->handle == handle) {
1138 type = c->type;
1139 break;
1140 }
1141 }
1142
1143 rcu_read_unlock();
1144
1145 return type;
1146 }
1147
hci_conn_hash_lookup_bis(struct hci_dev * hdev,bdaddr_t * ba,__u8 bis)1148 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev,
1149 bdaddr_t *ba, __u8 bis)
1150 {
1151 struct hci_conn_hash *h = &hdev->conn_hash;
1152 struct hci_conn *c;
1153
1154 rcu_read_lock();
1155
1156 list_for_each_entry_rcu(c, &h->list, list) {
1157 if (bacmp(&c->dst, ba) || c->type != BIS_LINK)
1158 continue;
1159
1160 if (c->iso_qos.bcast.bis == bis) {
1161 rcu_read_unlock();
1162 return c;
1163 }
1164 }
1165 rcu_read_unlock();
1166
1167 return NULL;
1168 }
1169
1170 static inline struct hci_conn *
hci_conn_hash_lookup_create_pa_sync(struct hci_dev * hdev)1171 hci_conn_hash_lookup_create_pa_sync(struct hci_dev *hdev)
1172 {
1173 struct hci_conn_hash *h = &hdev->conn_hash;
1174 struct hci_conn *c;
1175
1176 rcu_read_lock();
1177
1178 list_for_each_entry_rcu(c, &h->list, list) {
1179 if (c->type != PA_LINK)
1180 continue;
1181
1182 if (!test_bit(HCI_CONN_CREATE_PA_SYNC, &c->flags))
1183 continue;
1184
1185 rcu_read_unlock();
1186 return c;
1187 }
1188
1189 rcu_read_unlock();
1190
1191 return NULL;
1192 }
1193
1194 static inline struct hci_conn *
hci_conn_hash_lookup_per_adv_bis(struct hci_dev * hdev,bdaddr_t * ba,__u8 big,__u8 bis)1195 hci_conn_hash_lookup_per_adv_bis(struct hci_dev *hdev,
1196 bdaddr_t *ba,
1197 __u8 big, __u8 bis)
1198 {
1199 struct hci_conn_hash *h = &hdev->conn_hash;
1200 struct hci_conn *c;
1201
1202 rcu_read_lock();
1203
1204 list_for_each_entry_rcu(c, &h->list, list) {
1205 if (bacmp(&c->dst, ba) || c->type != BIS_LINK ||
1206 !test_bit(HCI_CONN_PER_ADV, &c->flags))
1207 continue;
1208
1209 if (c->iso_qos.bcast.big == big &&
1210 c->iso_qos.bcast.bis == bis) {
1211 rcu_read_unlock();
1212 return c;
1213 }
1214 }
1215 rcu_read_unlock();
1216
1217 return NULL;
1218 }
1219
hci_conn_hash_lookup_handle(struct hci_dev * hdev,__u16 handle)1220 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
1221 __u16 handle)
1222 {
1223 struct hci_conn_hash *h = &hdev->conn_hash;
1224 struct hci_conn *c;
1225
1226 rcu_read_lock();
1227
1228 list_for_each_entry_rcu(c, &h->list, list) {
1229 if (c->handle == handle) {
1230 rcu_read_unlock();
1231 return c;
1232 }
1233 }
1234 rcu_read_unlock();
1235
1236 return NULL;
1237 }
1238
hci_conn_hash_lookup_ba(struct hci_dev * hdev,__u8 type,bdaddr_t * ba)1239 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
1240 __u8 type, bdaddr_t *ba)
1241 {
1242 struct hci_conn_hash *h = &hdev->conn_hash;
1243 struct hci_conn *c;
1244
1245 rcu_read_lock();
1246
1247 list_for_each_entry_rcu(c, &h->list, list) {
1248 if (c->type == type && !bacmp(&c->dst, ba)) {
1249 rcu_read_unlock();
1250 return c;
1251 }
1252 }
1253
1254 rcu_read_unlock();
1255
1256 return NULL;
1257 }
1258
hci_conn_hash_lookup_role(struct hci_dev * hdev,__u8 type,__u8 role,bdaddr_t * ba)1259 static inline struct hci_conn *hci_conn_hash_lookup_role(struct hci_dev *hdev,
1260 __u8 type, __u8 role,
1261 bdaddr_t *ba)
1262 {
1263 struct hci_conn_hash *h = &hdev->conn_hash;
1264 struct hci_conn *c;
1265
1266 rcu_read_lock();
1267
1268 list_for_each_entry_rcu(c, &h->list, list) {
1269 if (c->type == type && c->role == role && !bacmp(&c->dst, ba)) {
1270 rcu_read_unlock();
1271 return c;
1272 }
1273 }
1274
1275 rcu_read_unlock();
1276
1277 return NULL;
1278 }
1279
hci_conn_hash_lookup_le(struct hci_dev * hdev,bdaddr_t * ba,__u8 ba_type)1280 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
1281 bdaddr_t *ba,
1282 __u8 ba_type)
1283 {
1284 struct hci_conn_hash *h = &hdev->conn_hash;
1285 struct hci_conn *c;
1286
1287 rcu_read_lock();
1288
1289 list_for_each_entry_rcu(c, &h->list, list) {
1290 if (c->type != LE_LINK)
1291 continue;
1292
1293 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1294 rcu_read_unlock();
1295 return c;
1296 }
1297 }
1298
1299 rcu_read_unlock();
1300
1301 return NULL;
1302 }
1303
hci_conn_hash_lookup_cis(struct hci_dev * hdev,bdaddr_t * ba,__u8 ba_type,__u8 cig,__u8 id)1304 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev,
1305 bdaddr_t *ba,
1306 __u8 ba_type,
1307 __u8 cig,
1308 __u8 id)
1309 {
1310 struct hci_conn_hash *h = &hdev->conn_hash;
1311 struct hci_conn *c;
1312
1313 rcu_read_lock();
1314
1315 list_for_each_entry_rcu(c, &h->list, list) {
1316 if (c->type != CIS_LINK)
1317 continue;
1318
1319 /* Match CIG ID if set */
1320 if (cig != c->iso_qos.ucast.cig)
1321 continue;
1322
1323 /* Match CIS ID if set */
1324 if (id != c->iso_qos.ucast.cis)
1325 continue;
1326
1327 /* Match destination address if set */
1328 if (!ba || (ba_type == c->dst_type && !bacmp(&c->dst, ba))) {
1329 rcu_read_unlock();
1330 return c;
1331 }
1332 }
1333
1334 rcu_read_unlock();
1335
1336 return NULL;
1337 }
1338
hci_conn_hash_lookup_cig(struct hci_dev * hdev,__u8 handle)1339 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev,
1340 __u8 handle)
1341 {
1342 struct hci_conn_hash *h = &hdev->conn_hash;
1343 struct hci_conn *c;
1344
1345 rcu_read_lock();
1346
1347 list_for_each_entry_rcu(c, &h->list, list) {
1348 if (c->type != CIS_LINK)
1349 continue;
1350
1351 if (handle == c->iso_qos.ucast.cig) {
1352 rcu_read_unlock();
1353 return c;
1354 }
1355 }
1356
1357 rcu_read_unlock();
1358
1359 return NULL;
1360 }
1361
hci_conn_hash_lookup_big(struct hci_dev * hdev,__u8 handle)1362 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev,
1363 __u8 handle)
1364 {
1365 struct hci_conn_hash *h = &hdev->conn_hash;
1366 struct hci_conn *c;
1367
1368 rcu_read_lock();
1369
1370 list_for_each_entry_rcu(c, &h->list, list) {
1371 if (c->type != BIS_LINK)
1372 continue;
1373
1374 if (handle == c->iso_qos.bcast.big) {
1375 rcu_read_unlock();
1376 return c;
1377 }
1378 }
1379
1380 rcu_read_unlock();
1381
1382 return NULL;
1383 }
1384
1385 static inline struct hci_conn *
hci_conn_hash_lookup_big_sync_pend(struct hci_dev * hdev,__u8 handle,__u8 num_bis)1386 hci_conn_hash_lookup_big_sync_pend(struct hci_dev *hdev,
1387 __u8 handle, __u8 num_bis)
1388 {
1389 struct hci_conn_hash *h = &hdev->conn_hash;
1390 struct hci_conn *c;
1391
1392 rcu_read_lock();
1393
1394 list_for_each_entry_rcu(c, &h->list, list) {
1395 if (c->type != PA_LINK)
1396 continue;
1397
1398 if (handle == c->iso_qos.bcast.big && num_bis == c->num_bis) {
1399 rcu_read_unlock();
1400 return c;
1401 }
1402 }
1403
1404 rcu_read_unlock();
1405
1406 return NULL;
1407 }
1408
1409 static inline struct hci_conn *
hci_conn_hash_lookup_big_state(struct hci_dev * hdev,__u8 handle,__u16 state,__u8 role)1410 hci_conn_hash_lookup_big_state(struct hci_dev *hdev, __u8 handle, __u16 state,
1411 __u8 role)
1412 {
1413 struct hci_conn_hash *h = &hdev->conn_hash;
1414 struct hci_conn *c;
1415
1416 rcu_read_lock();
1417
1418 list_for_each_entry_rcu(c, &h->list, list) {
1419 if (c->type != BIS_LINK || c->state != state || c->role != role)
1420 continue;
1421
1422 if (handle == c->iso_qos.bcast.big) {
1423 rcu_read_unlock();
1424 return c;
1425 }
1426 }
1427
1428 rcu_read_unlock();
1429
1430 return NULL;
1431 }
1432
1433 static inline struct hci_conn *
hci_conn_hash_lookup_pa_sync_big_handle(struct hci_dev * hdev,__u8 big)1434 hci_conn_hash_lookup_pa_sync_big_handle(struct hci_dev *hdev, __u8 big)
1435 {
1436 struct hci_conn_hash *h = &hdev->conn_hash;
1437 struct hci_conn *c;
1438
1439 rcu_read_lock();
1440
1441 list_for_each_entry_rcu(c, &h->list, list) {
1442 if (c->type != BIS_LINK ||
1443 !test_bit(HCI_CONN_PA_SYNC, &c->flags))
1444 continue;
1445
1446 if (c->iso_qos.bcast.big == big) {
1447 rcu_read_unlock();
1448 return c;
1449 }
1450 }
1451 rcu_read_unlock();
1452
1453 return NULL;
1454 }
1455
1456 static inline struct hci_conn *
hci_conn_hash_lookup_pa_sync_handle(struct hci_dev * hdev,__u16 sync_handle)1457 hci_conn_hash_lookup_pa_sync_handle(struct hci_dev *hdev, __u16 sync_handle)
1458 {
1459 struct hci_conn_hash *h = &hdev->conn_hash;
1460 struct hci_conn *c;
1461
1462 rcu_read_lock();
1463
1464 list_for_each_entry_rcu(c, &h->list, list) {
1465 if (c->type != PA_LINK)
1466 continue;
1467
1468 /* Ignore the listen hcon, we are looking
1469 * for the child hcon that was created as
1470 * a result of the PA sync established event.
1471 */
1472 if (c->state == BT_LISTEN)
1473 continue;
1474
1475 if (c->sync_handle == sync_handle) {
1476 rcu_read_unlock();
1477 return c;
1478 }
1479 }
1480 rcu_read_unlock();
1481
1482 return NULL;
1483 }
1484
1485 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)1486 static inline void hci_conn_hash_list_state(struct hci_dev *hdev,
1487 hci_conn_func_t func, __u8 type,
1488 __u16 state, void *data)
1489 {
1490 struct hci_conn_hash *h = &hdev->conn_hash;
1491 struct hci_conn *c;
1492
1493 if (!func)
1494 return;
1495
1496 rcu_read_lock();
1497
1498 list_for_each_entry_rcu(c, &h->list, list) {
1499 if (c->type == type && c->state == state)
1500 func(c, data);
1501 }
1502
1503 rcu_read_unlock();
1504 }
1505
hci_conn_hash_list_flag(struct hci_dev * hdev,hci_conn_func_t func,__u8 type,__u8 flag,void * data)1506 static inline void hci_conn_hash_list_flag(struct hci_dev *hdev,
1507 hci_conn_func_t func, __u8 type,
1508 __u8 flag, void *data)
1509 {
1510 struct hci_conn_hash *h = &hdev->conn_hash;
1511 struct hci_conn *c;
1512
1513 if (!func)
1514 return;
1515
1516 rcu_read_lock();
1517
1518 list_for_each_entry_rcu(c, &h->list, list) {
1519 if (c->type == type && test_bit(flag, &c->flags))
1520 func(c, data);
1521 }
1522
1523 rcu_read_unlock();
1524 }
1525
hci_lookup_le_connect(struct hci_dev * hdev)1526 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1527 {
1528 struct hci_conn_hash *h = &hdev->conn_hash;
1529 struct hci_conn *c;
1530
1531 rcu_read_lock();
1532
1533 list_for_each_entry_rcu(c, &h->list, list) {
1534 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1535 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1536 rcu_read_unlock();
1537 return c;
1538 }
1539 }
1540
1541 rcu_read_unlock();
1542
1543 return NULL;
1544 }
1545
1546 /* Returns true if an le connection is in the scanning state */
hci_is_le_conn_scanning(struct hci_dev * hdev)1547 static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev)
1548 {
1549 struct hci_conn_hash *h = &hdev->conn_hash;
1550 struct hci_conn *c;
1551
1552 rcu_read_lock();
1553
1554 list_for_each_entry_rcu(c, &h->list, list) {
1555 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1556 test_bit(HCI_CONN_SCANNING, &c->flags)) {
1557 rcu_read_unlock();
1558 return true;
1559 }
1560 }
1561
1562 rcu_read_unlock();
1563
1564 return false;
1565 }
1566
1567 int hci_disconnect(struct hci_conn *conn, __u8 reason);
1568 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1569 void hci_sco_setup(struct hci_conn *conn, __u8 status);
1570 bool hci_iso_setup_path(struct hci_conn *conn);
1571 int hci_le_create_cis_pending(struct hci_dev *hdev);
1572 int hci_conn_check_create_cis(struct hci_conn *conn);
1573
1574 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1575 u8 dst_type, u8 role, u16 handle);
1576 struct hci_conn *hci_conn_add_unset(struct hci_dev *hdev, int type,
1577 bdaddr_t *dst, u8 dst_type, u8 role);
1578 void hci_conn_del(struct hci_conn *conn);
1579 void hci_conn_hash_flush(struct hci_dev *hdev);
1580
1581 struct hci_chan *hci_chan_create(struct hci_conn *conn);
1582 void hci_chan_del(struct hci_chan *chan);
1583 void hci_chan_list_flush(struct hci_conn *conn);
1584 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1585
1586 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1587 u8 dst_type, u8 sec_level,
1588 u16 conn_timeout,
1589 enum conn_reasons conn_reason);
1590 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1591 u8 dst_type, bool dst_resolved, u8 sec_level,
1592 u16 conn_timeout, u8 role, u8 phy, u8 sec_phy);
1593 void hci_connect_le_scan_cleanup(struct hci_conn *conn, u8 status);
1594 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1595 u8 sec_level, u8 auth_type,
1596 enum conn_reasons conn_reason, u16 timeout);
1597 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1598 __u16 setting, struct bt_codec *codec,
1599 u16 timeout);
1600 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
1601 __u8 dst_type, struct bt_iso_qos *qos,
1602 u16 timeout);
1603 struct hci_conn *hci_bind_bis(struct hci_dev *hdev, bdaddr_t *dst, __u8 sid,
1604 struct bt_iso_qos *qos,
1605 __u8 base_len, __u8 *base, u16 timeout);
1606 int hci_past_bis(struct hci_conn *conn, bdaddr_t *dst, __u8 dst_type);
1607 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
1608 __u8 dst_type, struct bt_iso_qos *qos,
1609 u16 timeout);
1610 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
1611 __u8 dst_type, __u8 sid,
1612 struct bt_iso_qos *qos,
1613 __u8 data_len, __u8 *data, u16 timeout);
1614 struct hci_conn *hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst,
1615 __u8 dst_type, __u8 sid, struct bt_iso_qos *qos);
1616 int hci_conn_big_create_sync(struct hci_dev *hdev, struct hci_conn *hcon,
1617 struct bt_iso_qos *qos, __u16 sync_handle,
1618 __u8 num_bis, __u8 bis[]);
1619 int hci_conn_check_link_mode(struct hci_conn *conn);
1620 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1621 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1622 bool initiator);
1623 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1624
1625 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1626
1627 void hci_conn_failed(struct hci_conn *conn, u8 status);
1628 u8 hci_conn_set_handle(struct hci_conn *conn, u16 handle);
1629
1630 void hci_conn_tx_queue(struct hci_conn *conn, struct sk_buff *skb);
1631 void hci_conn_tx_dequeue(struct hci_conn *conn);
1632 void hci_setup_tx_timestamp(struct sk_buff *skb, size_t key_offset,
1633 const struct sockcm_cookie *sockc);
1634
hci_sockcm_init(struct sockcm_cookie * sockc,struct sock * sk)1635 static inline void hci_sockcm_init(struct sockcm_cookie *sockc, struct sock *sk)
1636 {
1637 *sockc = (struct sockcm_cookie) {
1638 .tsflags = READ_ONCE(sk->sk_tsflags),
1639 };
1640 }
1641
1642 /*
1643 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1644 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1645 * working or anything else. They just guarantee that the object is available
1646 * and can be dereferenced. So you can use its locks, local variables and any
1647 * other constant data.
1648 * Before accessing runtime data, you _must_ lock the object and then check that
1649 * it is still running. As soon as you release the locks, the connection might
1650 * get dropped, though.
1651 *
1652 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1653 * how long the underlying connection is held. So every channel that runs on the
1654 * hci_conn object calls this to prevent the connection from disappearing. As
1655 * long as you hold a device, you must also guarantee that you have a valid
1656 * reference to the device via hci_conn_get() (or the initial reference from
1657 * hci_conn_add()).
1658 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1659 * break because nobody cares for that. But this means, we cannot use
1660 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1661 */
1662
hci_conn_get(struct hci_conn * conn)1663 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1664 {
1665 get_device(&conn->dev);
1666 return conn;
1667 }
1668
hci_conn_put(struct hci_conn * conn)1669 static inline void hci_conn_put(struct hci_conn *conn)
1670 {
1671 put_device(&conn->dev);
1672 }
1673
hci_conn_hold(struct hci_conn * conn)1674 static inline struct hci_conn *hci_conn_hold(struct hci_conn *conn)
1675 {
1676 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1677
1678 atomic_inc(&conn->refcnt);
1679 cancel_delayed_work(&conn->disc_work);
1680
1681 return conn;
1682 }
1683
hci_conn_drop(struct hci_conn * conn)1684 static inline void hci_conn_drop(struct hci_conn *conn)
1685 {
1686 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1687
1688 if (atomic_dec_and_test(&conn->refcnt)) {
1689 unsigned long timeo;
1690
1691 switch (conn->type) {
1692 case ACL_LINK:
1693 case LE_LINK:
1694 cancel_delayed_work(&conn->idle_work);
1695 if (conn->state == BT_CONNECTED) {
1696 timeo = conn->disc_timeout;
1697 if (!conn->out)
1698 timeo *= 2;
1699 } else {
1700 timeo = 0;
1701 }
1702 break;
1703
1704 default:
1705 timeo = 0;
1706 break;
1707 }
1708
1709 cancel_delayed_work(&conn->disc_work);
1710 queue_delayed_work(conn->hdev->workqueue,
1711 &conn->disc_work, timeo);
1712 }
1713 }
1714
1715 /* ----- HCI Devices ----- */
hci_dev_put(struct hci_dev * d)1716 static inline void hci_dev_put(struct hci_dev *d)
1717 {
1718 BT_DBG("%s orig refcnt %d", d->name,
1719 kref_read(&d->dev.kobj.kref));
1720
1721 put_device(&d->dev);
1722 }
1723
hci_dev_hold(struct hci_dev * d)1724 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1725 {
1726 BT_DBG("%s orig refcnt %d", d->name,
1727 kref_read(&d->dev.kobj.kref));
1728
1729 get_device(&d->dev);
1730 return d;
1731 }
1732
1733 #define hci_dev_lock(d) mutex_lock(&d->lock)
1734 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
1735
1736 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1737 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1738
hci_get_drvdata(struct hci_dev * hdev)1739 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1740 {
1741 return dev_get_drvdata(&hdev->dev);
1742 }
1743
hci_set_drvdata(struct hci_dev * hdev,void * data)1744 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1745 {
1746 dev_set_drvdata(&hdev->dev, data);
1747 }
1748
hci_get_priv(struct hci_dev * hdev)1749 static inline void *hci_get_priv(struct hci_dev *hdev)
1750 {
1751 return (char *)hdev + sizeof(*hdev);
1752 }
1753
1754 struct hci_dev *hci_dev_get(int index);
1755 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1756
1757 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);
1758
hci_alloc_dev(void)1759 static inline struct hci_dev *hci_alloc_dev(void)
1760 {
1761 return hci_alloc_dev_priv(0);
1762 }
1763
1764 void hci_free_dev(struct hci_dev *hdev);
1765 int hci_register_dev(struct hci_dev *hdev);
1766 void hci_unregister_dev(struct hci_dev *hdev);
1767 void hci_release_dev(struct hci_dev *hdev);
1768 int hci_register_suspend_notifier(struct hci_dev *hdev);
1769 int hci_unregister_suspend_notifier(struct hci_dev *hdev);
1770 int hci_suspend_dev(struct hci_dev *hdev);
1771 int hci_resume_dev(struct hci_dev *hdev);
1772 int hci_reset_dev(struct hci_dev *hdev);
1773 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1774 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1775 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1776 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1777
hci_set_msft_opcode(struct hci_dev * hdev,__u16 opcode)1778 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1779 {
1780 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
1781 hdev->msft_opcode = opcode;
1782 #endif
1783 }
1784
hci_set_aosp_capable(struct hci_dev * hdev)1785 static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1786 {
1787 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
1788 hdev->aosp_capable = true;
1789 #endif
1790 }
1791
hci_devcd_setup(struct hci_dev * hdev)1792 static inline void hci_devcd_setup(struct hci_dev *hdev)
1793 {
1794 #ifdef CONFIG_DEV_COREDUMP
1795 INIT_WORK(&hdev->dump.dump_rx, hci_devcd_rx);
1796 INIT_DELAYED_WORK(&hdev->dump.dump_timeout, hci_devcd_timeout);
1797 skb_queue_head_init(&hdev->dump.dump_q);
1798 #endif
1799 }
1800
1801 int hci_dev_open(__u16 dev);
1802 int hci_dev_close(__u16 dev);
1803 int hci_dev_do_close(struct hci_dev *hdev);
1804 int hci_dev_reset(__u16 dev);
1805 int hci_dev_reset_stat(__u16 dev);
1806 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1807 int hci_get_dev_list(void __user *arg);
1808 int hci_get_dev_info(void __user *arg);
1809 int hci_get_conn_list(void __user *arg);
1810 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1811 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1812 int hci_inquiry(void __user *arg);
1813
1814 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1815 bdaddr_t *bdaddr, u8 type);
1816 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1817 struct list_head *list, bdaddr_t *bdaddr,
1818 u8 type);
1819 struct bdaddr_list_with_flags *
1820 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1821 u8 type);
1822 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1823 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1824 u8 type, u8 *peer_irk, u8 *local_irk);
1825 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1826 u8 type, u32 flags);
1827 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1828 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1829 u8 type);
1830 void hci_bdaddr_list_clear(struct list_head *list);
1831
1832 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1833 bdaddr_t *addr, u8 addr_type);
1834 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1835 bdaddr_t *addr, u8 addr_type);
1836 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1837 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1838 void hci_conn_params_free(struct hci_conn_params *param);
1839
1840 void hci_pend_le_list_del_init(struct hci_conn_params *param);
1841 void hci_pend_le_list_add(struct hci_conn_params *param,
1842 struct list_head *list);
1843 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1844 bdaddr_t *addr,
1845 u8 addr_type);
1846
1847 void hci_uuids_clear(struct hci_dev *hdev);
1848
1849 void hci_link_keys_clear(struct hci_dev *hdev);
1850 u8 *hci_conn_key_enc_size(struct hci_conn *conn);
1851 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1852 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1853 bdaddr_t *bdaddr, u8 *val, u8 type,
1854 u8 pin_len, bool *persistent);
1855 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1856 u8 addr_type, u8 type, u8 authenticated,
1857 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1858 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1859 u8 addr_type, u8 role);
1860 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1861 void hci_smp_ltks_clear(struct hci_dev *hdev);
1862 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1863
1864 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1865 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1866 u8 addr_type);
1867 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1868 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1869 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1870 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1871 void hci_blocked_keys_clear(struct hci_dev *hdev);
1872 void hci_smp_irks_clear(struct hci_dev *hdev);
1873
1874 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1875
1876 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1877 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1878 bdaddr_t *bdaddr, u8 bdaddr_type);
1879 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1880 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1881 u8 *hash256, u8 *rand256);
1882 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1883 u8 bdaddr_type);
1884
1885 void hci_adv_instances_clear(struct hci_dev *hdev);
1886 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1887 struct adv_info *hci_find_adv_sid(struct hci_dev *hdev, u8 sid);
1888 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1889 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance,
1890 u32 flags, u16 adv_data_len, u8 *adv_data,
1891 u16 scan_rsp_len, u8 *scan_rsp_data,
1892 u16 timeout, u16 duration, s8 tx_power,
1893 u32 min_interval, u32 max_interval,
1894 u8 mesh_handle);
1895 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance, u8 sid,
1896 u32 flags, u8 data_len, u8 *data,
1897 u32 min_interval, u32 max_interval);
1898 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1899 u16 adv_data_len, u8 *adv_data,
1900 u16 scan_rsp_len, u8 *scan_rsp_data);
1901 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1902 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1903 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance);
1904 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance);
1905
1906 void hci_adv_monitors_clear(struct hci_dev *hdev);
1907 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1908 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1909 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle);
1910 int hci_remove_all_adv_monitor(struct hci_dev *hdev);
1911 bool hci_is_adv_monitoring(struct hci_dev *hdev);
1912 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1913
1914 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1915
1916 void hci_init_sysfs(struct hci_dev *hdev);
1917 void hci_conn_init_sysfs(struct hci_conn *conn);
1918 void hci_conn_add_sysfs(struct hci_conn *conn);
1919 void hci_conn_del_sysfs(struct hci_conn *conn);
1920
1921 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1922 #define GET_HCIDEV_DEV(hdev) ((hdev)->dev.parent)
1923
1924 /* ----- LMP capabilities ----- */
1925 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1926 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1927 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1928 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1929 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1930 #define lmp_sco_capable(dev) ((dev)->features[0][1] & LMP_SCO)
1931 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1932 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1933 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1934 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1935 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1936 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1937 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1938 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1939 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1940 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1941 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1942 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1943 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1944 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1945 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1946 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1947 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1948 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1949 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1950
1951 /* ----- Extended LMP capabilities ----- */
1952 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1953 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1954 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1955 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1956 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1957 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1958
1959 /* ----- Host capabilities ----- */
1960 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1961 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1962 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1963 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1964
1965 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1966 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1967 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1968 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1969 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \
1970 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED))
1971 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \
1972 !adv->rpa_expired)
1973 #define le_enabled(dev) (lmp_le_capable(dev) && \
1974 hci_dev_test_flag(dev, HCI_LE_ENABLED))
1975
1976 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1977 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1978
1979 #define le_2m_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_2M))
1980
1981 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1982 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1983
1984 #define le_coded_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_CODED) && \
1985 !hci_test_quirk((dev), \
1986 HCI_QUIRK_BROKEN_LE_CODED))
1987
1988 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1989 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1990
1991 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1992 #define ll_privacy_enabled(dev) (le_enabled(dev) && ll_privacy_capable(dev))
1993
1994 #define privacy_mode_capable(dev) (ll_privacy_capable(dev) && \
1995 ((dev)->commands[39] & 0x04))
1996
1997 #define read_key_size_capable(dev) \
1998 ((dev)->commands[20] & 0x10 && \
1999 !hci_test_quirk((dev), HCI_QUIRK_BROKEN_READ_ENC_KEY_SIZE))
2000
2001 #define read_voice_setting_capable(dev) \
2002 ((dev)->commands[9] & 0x04 && \
2003 !hci_test_quirk((dev), HCI_QUIRK_BROKEN_READ_VOICE_SETTING))
2004
2005 /* Use enhanced synchronous connection if command is supported and its quirk
2006 * has not been set.
2007 */
2008 #define enhanced_sync_conn_capable(dev) \
2009 (((dev)->commands[29] & 0x08) && \
2010 !hci_test_quirk((dev), HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN))
2011
2012 /* Use ext scanning if set ext scan param and ext scan enable is supported */
2013 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
2014 ((dev)->commands[37] & 0x40) && \
2015 !hci_test_quirk((dev), HCI_QUIRK_BROKEN_EXT_SCAN))
2016
2017 /* Use ext create connection if command is supported */
2018 #define use_ext_conn(dev) (((dev)->commands[37] & 0x80) && \
2019 !hci_test_quirk((dev), HCI_QUIRK_BROKEN_EXT_CREATE_CONN))
2020 /* Extended advertising support */
2021 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
2022
2023 /* Maximum advertising length */
2024 #define max_adv_len(dev) \
2025 (ext_adv_capable(dev) ? HCI_MAX_EXT_AD_LENGTH : HCI_MAX_AD_LENGTH)
2026
2027 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789:
2028 *
2029 * C24: Mandatory if the LE Controller supports Connection State and either
2030 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported
2031 */
2032 #define use_enhanced_conn_complete(dev) ((ll_privacy_capable(dev) || \
2033 ext_adv_capable(dev)) && \
2034 !hci_test_quirk((dev), \
2035 HCI_QUIRK_BROKEN_EXT_CREATE_CONN))
2036
2037 /* Periodic advertising support */
2038 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV))
2039
2040 /* CIS Master/Slave and BIS support */
2041 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev))
2042 #define iso_enabled(dev) (le_enabled(dev) && iso_capable(dev))
2043 #define cis_capable(dev) \
2044 (cis_central_capable(dev) || cis_peripheral_capable(dev))
2045 #define cis_enabled(dev) (le_enabled(dev) && cis_capable(dev))
2046 #define cis_central_capable(dev) \
2047 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL)
2048 #define cis_central_enabled(dev) \
2049 (le_enabled(dev) && cis_central_capable(dev))
2050 #define cis_peripheral_capable(dev) \
2051 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL)
2052 #define cis_peripheral_enabled(dev) \
2053 (le_enabled(dev) && cis_peripheral_capable(dev))
2054 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER)
2055 #define bis_enabled(dev) (le_enabled(dev) && bis_capable(dev))
2056 #define sync_recv_capable(dev) \
2057 ((dev)->le_features[3] & HCI_LE_ISO_SYNC_RECEIVER)
2058 #define sync_recv_enabled(dev) (le_enabled(dev) && sync_recv_capable(dev))
2059 #define past_sender_capable(dev) \
2060 ((dev)->le_features[3] & HCI_LE_PAST_SENDER)
2061 #define past_receiver_capable(dev) \
2062 ((dev)->le_features[3] & HCI_LE_PAST_RECEIVER)
2063 #define past_capable(dev) \
2064 (past_sender_capable(dev) || past_receiver_capable(dev))
2065 #define past_sender_enabled(dev) \
2066 (le_enabled(dev) && past_sender_capable(dev))
2067 #define past_receiver_enabled(dev) \
2068 (le_enabled(dev) && past_receiver_capable(dev))
2069 #define past_enabled(dev) \
2070 (past_sender_enabled(dev) || past_receiver_enabled(dev))
2071 #define ll_ext_feature_capable(dev) \
2072 ((dev)->le_features[7] & HCI_LE_LL_EXT_FEATURE)
2073
2074 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \
2075 (!hci_test_quirk((dev), HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG)))
2076
2077 /* ----- HCI protocols ----- */
2078 #define HCI_PROTO_DEFER 0x01
2079
hci_proto_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 type,__u8 * flags)2080 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
2081 __u8 type, __u8 *flags)
2082 {
2083 switch (type) {
2084 case ACL_LINK:
2085 return l2cap_connect_ind(hdev, bdaddr);
2086
2087 case SCO_LINK:
2088 case ESCO_LINK:
2089 return sco_connect_ind(hdev, bdaddr, flags);
2090
2091 case CIS_LINK:
2092 case BIS_LINK:
2093 case PA_LINK:
2094 return iso_connect_ind(hdev, bdaddr, flags);
2095
2096 default:
2097 BT_ERR("unknown link type %d", type);
2098 return -EINVAL;
2099 }
2100 }
2101
hci_proto_disconn_ind(struct hci_conn * conn)2102 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
2103 {
2104 if (conn->type != ACL_LINK && conn->type != LE_LINK)
2105 return HCI_ERROR_REMOTE_USER_TERM;
2106
2107 return l2cap_disconn_ind(conn);
2108 }
2109
2110 /* ----- HCI callbacks ----- */
2111 struct hci_cb {
2112 struct list_head list;
2113
2114 char *name;
2115
2116 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
2117 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
2118 void (*security_cfm) (struct hci_conn *conn, __u8 status,
2119 __u8 encrypt);
2120 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
2121 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
2122 };
2123
hci_connect_cfm(struct hci_conn * conn,__u8 status)2124 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
2125 {
2126 struct hci_cb *cb;
2127
2128 mutex_lock(&hci_cb_list_lock);
2129 list_for_each_entry(cb, &hci_cb_list, list) {
2130 if (cb->connect_cfm)
2131 cb->connect_cfm(conn, status);
2132 }
2133 mutex_unlock(&hci_cb_list_lock);
2134
2135 if (conn->connect_cfm_cb)
2136 conn->connect_cfm_cb(conn, status);
2137 }
2138
hci_disconn_cfm(struct hci_conn * conn,__u8 reason)2139 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
2140 {
2141 struct hci_cb *cb;
2142
2143 mutex_lock(&hci_cb_list_lock);
2144 list_for_each_entry(cb, &hci_cb_list, list) {
2145 if (cb->disconn_cfm)
2146 cb->disconn_cfm(conn, reason);
2147 }
2148 mutex_unlock(&hci_cb_list_lock);
2149
2150 if (conn->disconn_cfm_cb)
2151 conn->disconn_cfm_cb(conn, reason);
2152 }
2153
hci_auth_cfm(struct hci_conn * conn,__u8 status)2154 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
2155 {
2156 struct hci_cb *cb;
2157 __u8 encrypt;
2158
2159 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
2160 return;
2161
2162 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
2163
2164 mutex_lock(&hci_cb_list_lock);
2165 list_for_each_entry(cb, &hci_cb_list, list) {
2166 if (cb->security_cfm)
2167 cb->security_cfm(conn, status, encrypt);
2168 }
2169 mutex_unlock(&hci_cb_list_lock);
2170
2171 if (conn->security_cfm_cb)
2172 conn->security_cfm_cb(conn, status);
2173 }
2174
hci_encrypt_cfm(struct hci_conn * conn,__u8 status)2175 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
2176 {
2177 struct hci_cb *cb;
2178 __u8 encrypt;
2179
2180 if (conn->state == BT_CONFIG) {
2181 if (!status)
2182 conn->state = BT_CONNECTED;
2183
2184 hci_connect_cfm(conn, status);
2185 hci_conn_drop(conn);
2186 return;
2187 }
2188
2189 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
2190 encrypt = 0x00;
2191 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
2192 encrypt = 0x02;
2193 else
2194 encrypt = 0x01;
2195
2196 if (!status) {
2197 if (conn->sec_level == BT_SECURITY_SDP)
2198 conn->sec_level = BT_SECURITY_LOW;
2199
2200 if (conn->pending_sec_level > conn->sec_level)
2201 conn->sec_level = conn->pending_sec_level;
2202 }
2203
2204 mutex_lock(&hci_cb_list_lock);
2205 list_for_each_entry(cb, &hci_cb_list, list) {
2206 if (cb->security_cfm)
2207 cb->security_cfm(conn, status, encrypt);
2208 }
2209 mutex_unlock(&hci_cb_list_lock);
2210
2211 if (conn->security_cfm_cb)
2212 conn->security_cfm_cb(conn, status);
2213 }
2214
hci_key_change_cfm(struct hci_conn * conn,__u8 status)2215 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
2216 {
2217 struct hci_cb *cb;
2218
2219 mutex_lock(&hci_cb_list_lock);
2220 list_for_each_entry(cb, &hci_cb_list, list) {
2221 if (cb->key_change_cfm)
2222 cb->key_change_cfm(conn, status);
2223 }
2224 mutex_unlock(&hci_cb_list_lock);
2225 }
2226
hci_role_switch_cfm(struct hci_conn * conn,__u8 status,__u8 role)2227 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
2228 __u8 role)
2229 {
2230 struct hci_cb *cb;
2231
2232 mutex_lock(&hci_cb_list_lock);
2233 list_for_each_entry(cb, &hci_cb_list, list) {
2234 if (cb->role_switch_cfm)
2235 cb->role_switch_cfm(conn, status, role);
2236 }
2237 mutex_unlock(&hci_cb_list_lock);
2238 }
2239
hci_bdaddr_is_rpa(bdaddr_t * bdaddr,u8 addr_type)2240 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
2241 {
2242 if (addr_type != ADDR_LE_DEV_RANDOM)
2243 return false;
2244
2245 if ((bdaddr->b[5] & 0xc0) == 0x40)
2246 return true;
2247
2248 return false;
2249 }
2250
hci_is_identity_address(bdaddr_t * addr,u8 addr_type)2251 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
2252 {
2253 if (addr_type == ADDR_LE_DEV_PUBLIC)
2254 return true;
2255
2256 /* Check for Random Static address type */
2257 if ((addr->b[5] & 0xc0) == 0xc0)
2258 return true;
2259
2260 return false;
2261 }
2262
hci_get_irk(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 addr_type)2263 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
2264 bdaddr_t *bdaddr, u8 addr_type)
2265 {
2266 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
2267 return NULL;
2268
2269 return hci_find_irk_by_rpa(hdev, bdaddr);
2270 }
2271
hci_check_conn_params(u16 min,u16 max,u16 latency,u16 to_multiplier)2272 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
2273 u16 to_multiplier)
2274 {
2275 u16 max_latency;
2276
2277 if (min > max) {
2278 BT_WARN("min %d > max %d", min, max);
2279 return -EINVAL;
2280 }
2281
2282 if (min < 6) {
2283 BT_WARN("min %d < 6", min);
2284 return -EINVAL;
2285 }
2286
2287 if (max > 3200) {
2288 BT_WARN("max %d > 3200", max);
2289 return -EINVAL;
2290 }
2291
2292 if (to_multiplier < 10) {
2293 BT_WARN("to_multiplier %d < 10", to_multiplier);
2294 return -EINVAL;
2295 }
2296
2297 if (to_multiplier > 3200) {
2298 BT_WARN("to_multiplier %d > 3200", to_multiplier);
2299 return -EINVAL;
2300 }
2301
2302 if (max >= to_multiplier * 8) {
2303 BT_WARN("max %d >= to_multiplier %d * 8", max, to_multiplier);
2304 return -EINVAL;
2305 }
2306
2307 max_latency = (to_multiplier * 4 / max) - 1;
2308 if (latency > 499) {
2309 BT_WARN("latency %d > 499", latency);
2310 return -EINVAL;
2311 }
2312
2313 if (latency > max_latency) {
2314 BT_WARN("latency %d > max_latency %d", latency, max_latency);
2315 return -EINVAL;
2316 }
2317
2318 return 0;
2319 }
2320
2321 int hci_register_cb(struct hci_cb *hcb);
2322 int hci_unregister_cb(struct hci_cb *hcb);
2323
2324 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
2325 const void *param);
2326
2327 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
2328 const void *param);
2329 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
2330 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
2331 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb);
2332
2333 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
2334 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event);
2335
2336 u32 hci_conn_get_phy(struct hci_conn *conn);
2337
2338 /* ----- HCI Sockets ----- */
2339 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
2340 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
2341 int flag, struct sock *skip_sk);
2342 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
2343 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
2344 void *data, u16 data_len, ktime_t tstamp,
2345 int flag, struct sock *skip_sk);
2346
2347 void hci_sock_dev_event(struct hci_dev *hdev, int event);
2348
2349 #define HCI_MGMT_VAR_LEN BIT(0)
2350 #define HCI_MGMT_NO_HDEV BIT(1)
2351 #define HCI_MGMT_UNTRUSTED BIT(2)
2352 #define HCI_MGMT_UNCONFIGURED BIT(3)
2353 #define HCI_MGMT_HDEV_OPTIONAL BIT(4)
2354
2355 struct hci_mgmt_handler {
2356 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
2357 u16 data_len);
2358 size_t data_len;
2359 unsigned long flags;
2360 };
2361
2362 struct hci_mgmt_chan {
2363 struct list_head list;
2364 unsigned short channel;
2365 size_t handler_count;
2366 const struct hci_mgmt_handler *handlers;
2367 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
2368 };
2369
2370 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
2371 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
2372
2373 /* Management interface */
2374 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
2375 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
2376 BIT(BDADDR_LE_RANDOM))
2377 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
2378 BIT(BDADDR_LE_PUBLIC) | \
2379 BIT(BDADDR_LE_RANDOM))
2380
2381 /* These LE scan and inquiry parameters were chosen according to LE General
2382 * Discovery Procedure specification.
2383 */
2384 #define DISCOV_LE_SCAN_WIN 0x0012 /* 11.25 msec */
2385 #define DISCOV_LE_SCAN_INT 0x0012 /* 11.25 msec */
2386 #define DISCOV_LE_SCAN_INT_FAST 0x0060 /* 60 msec */
2387 #define DISCOV_LE_SCAN_WIN_FAST 0x0030 /* 30 msec */
2388 #define DISCOV_LE_SCAN_INT_CONN 0x0060 /* 60 msec */
2389 #define DISCOV_LE_SCAN_WIN_CONN 0x0060 /* 60 msec */
2390 #define DISCOV_LE_SCAN_INT_SLOW1 0x0800 /* 1.28 sec */
2391 #define DISCOV_LE_SCAN_WIN_SLOW1 0x0012 /* 11.25 msec */
2392 #define DISCOV_LE_SCAN_INT_SLOW2 0x1000 /* 2.56 sec */
2393 #define DISCOV_LE_SCAN_WIN_SLOW2 0x0024 /* 22.5 msec */
2394 #define DISCOV_CODED_SCAN_INT_FAST 0x0120 /* 180 msec */
2395 #define DISCOV_CODED_SCAN_WIN_FAST 0x0090 /* 90 msec */
2396 #define DISCOV_CODED_SCAN_INT_SLOW1 0x1800 /* 3.84 sec */
2397 #define DISCOV_CODED_SCAN_WIN_SLOW1 0x0036 /* 33.75 msec */
2398 #define DISCOV_CODED_SCAN_INT_SLOW2 0x3000 /* 7.68 sec */
2399 #define DISCOV_CODED_SCAN_WIN_SLOW2 0x006c /* 67.5 msec */
2400 #define DISCOV_LE_TIMEOUT 10240 /* msec */
2401 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
2402 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
2403 #define DISCOV_BREDR_INQUIRY_LEN 0x08
2404 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
2405 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */
2406 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */
2407 #define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */
2408 #define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */
2409 #define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */
2410 #define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */
2411 #define INTERVAL_TO_MS(x) (((x) * 10) / 0x10)
2412
2413 #define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */
2414
2415 void mgmt_fill_version_info(void *ver);
2416 int mgmt_new_settings(struct hci_dev *hdev);
2417 void mgmt_index_added(struct hci_dev *hdev);
2418 void mgmt_index_removed(struct hci_dev *hdev);
2419 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
2420 void mgmt_power_on(struct hci_dev *hdev, int err);
2421 void __mgmt_power_off(struct hci_dev *hdev);
2422 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
2423 bool persistent);
2424 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
2425 u8 *name, u8 name_len);
2426 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
2427 u8 link_type, u8 addr_type, u8 reason,
2428 bool mgmt_connected);
2429 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
2430 u8 link_type, u8 addr_type, u8 status);
2431 void mgmt_connect_failed(struct hci_dev *hdev, struct hci_conn *conn,
2432 u8 status);
2433 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
2434 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2435 u8 status);
2436 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2437 u8 status);
2438 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2439 u8 link_type, u8 addr_type, u32 value,
2440 u8 confirm_hint);
2441 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2442 u8 link_type, u8 addr_type, u8 status);
2443 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2444 u8 link_type, u8 addr_type, u8 status);
2445 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2446 u8 link_type, u8 addr_type);
2447 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2448 u8 link_type, u8 addr_type, u8 status);
2449 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2450 u8 link_type, u8 addr_type, u8 status);
2451 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
2452 u8 link_type, u8 addr_type, u32 passkey,
2453 u8 entered);
2454 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
2455 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
2456 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
2457 u8 status);
2458 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
2459 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2460 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
2461 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len,
2462 u64 instant);
2463 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2464 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
2465 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
2466 void mgmt_suspending(struct hci_dev *hdev, u8 state);
2467 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
2468 u8 addr_type);
2469 bool mgmt_powering_down(struct hci_dev *hdev);
2470 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
2471 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
2472 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
2473 bool persistent);
2474 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
2475 u8 bdaddr_type, u8 store_hint, u16 min_interval,
2476 u16 max_interval, u16 latency, u16 timeout);
2477 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
2478 bool mgmt_get_connectable(struct hci_dev *hdev);
2479 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
2480 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
2481 u8 instance);
2482 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
2483 u8 instance);
2484 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
2485 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle,
2486 bdaddr_t *bdaddr, u8 addr_type);
2487
2488 int hci_abort_conn(struct hci_conn *conn, u8 reason);
2489 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
2490 u16 to_multiplier);
2491 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
2492 __u8 ltk[16], __u8 key_size);
2493
2494 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
2495 u8 *bdaddr_type);
2496
2497 #define SCO_AIRMODE_MASK 0x0003
2498 #define SCO_AIRMODE_CVSD 0x0000
2499 #define SCO_AIRMODE_TRANSP 0x0003
2500
2501 #define LOCAL_CODEC_ACL_MASK BIT(0)
2502 #define LOCAL_CODEC_SCO_MASK BIT(1)
2503
2504 #define TRANSPORT_TYPE_MAX 0x04
2505
2506 #endif /* __HCI_CORE_H */
2507