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