1 /*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4 Copyright 2023 NXP
5
6 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License version 2 as
10 published by the Free Software Foundation;
11
12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20
21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
23 SOFTWARE IS DISCLAIMED.
24 */
25
26 #ifndef __HCI_CORE_H
27 #define __HCI_CORE_H
28
29 #include <linux/idr.h>
30 #include <linux/leds.h>
31 #include <linux/rculist.h>
32
33 #include <net/bluetooth/hci.h>
34 #include <net/bluetooth/hci_sync.h>
35 #include <net/bluetooth/hci_sock.h>
36 #include <net/bluetooth/coredump.h>
37
38 /* HCI priority */
39 #define HCI_PRIO_MAX 7
40
41 /* HCI maximum id value */
42 #define HCI_MAX_ID 10000
43
44 /* HCI Core structures */
45 struct inquiry_data {
46 bdaddr_t bdaddr;
47 __u8 pscan_rep_mode;
48 __u8 pscan_period_mode;
49 __u8 pscan_mode;
50 __u8 dev_class[3];
51 __le16 clock_offset;
52 __s8 rssi;
53 __u8 ssp_mode;
54 };
55
56 struct inquiry_entry {
57 struct list_head all; /* inq_cache.all */
58 struct list_head list; /* unknown or resolve */
59 enum {
60 NAME_NOT_KNOWN,
61 NAME_NEEDED,
62 NAME_PENDING,
63 NAME_KNOWN,
64 } name_state;
65 __u32 timestamp;
66 struct inquiry_data data;
67 };
68
69 struct discovery_state {
70 int type;
71 enum {
72 DISCOVERY_STOPPED,
73 DISCOVERY_STARTING,
74 DISCOVERY_FINDING,
75 DISCOVERY_RESOLVING,
76 DISCOVERY_STOPPING,
77 } state;
78 struct list_head all; /* All devices found during inquiry */
79 struct list_head unknown; /* Name state not known */
80 struct list_head resolve; /* Name needs to be resolved */
81 __u32 timestamp;
82 bdaddr_t last_adv_addr;
83 u8 last_adv_addr_type;
84 s8 last_adv_rssi;
85 u32 last_adv_flags;
86 u8 last_adv_data[HCI_MAX_EXT_AD_LENGTH];
87 u8 last_adv_data_len;
88 bool report_invalid_rssi;
89 bool result_filtering;
90 bool limited;
91 s8 rssi;
92 u16 uuid_count;
93 u8 (*uuids)[16];
94 unsigned long scan_start;
95 unsigned long scan_duration;
96 unsigned long name_resolve_timeout;
97 };
98
99 #define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
100
101 enum suspend_tasks {
102 SUSPEND_PAUSE_DISCOVERY,
103 SUSPEND_UNPAUSE_DISCOVERY,
104
105 SUSPEND_PAUSE_ADVERTISING,
106 SUSPEND_UNPAUSE_ADVERTISING,
107
108 SUSPEND_SCAN_DISABLE,
109 SUSPEND_SCAN_ENABLE,
110 SUSPEND_DISCONNECTING,
111
112 SUSPEND_POWERING_DOWN,
113
114 SUSPEND_PREPARE_NOTIFIER,
115
116 SUSPEND_SET_ADV_FILTER,
117 __SUSPEND_NUM_TASKS
118 };
119
120 enum suspended_state {
121 BT_RUNNING = 0,
122 BT_SUSPEND_DISCONNECT,
123 BT_SUSPEND_CONFIGURE_WAKE,
124 };
125
126 struct hci_conn_hash {
127 struct list_head list;
128 unsigned int acl_num;
129 unsigned int amp_num;
130 unsigned int sco_num;
131 unsigned int iso_num;
132 unsigned int le_num;
133 unsigned int le_num_peripheral;
134 };
135
136 struct bdaddr_list {
137 struct list_head list;
138 bdaddr_t bdaddr;
139 u8 bdaddr_type;
140 };
141
142 struct codec_list {
143 struct list_head list;
144 u8 id;
145 __u16 cid;
146 __u16 vid;
147 u8 transport;
148 u8 num_caps;
149 u32 len;
150 struct hci_codec_caps caps[];
151 };
152
153 struct bdaddr_list_with_irk {
154 struct list_head list;
155 bdaddr_t bdaddr;
156 u8 bdaddr_type;
157 u8 peer_irk[16];
158 u8 local_irk[16];
159 };
160
161 /* Bitmask of connection flags */
162 enum hci_conn_flags {
163 HCI_CONN_FLAG_REMOTE_WAKEUP = 1,
164 HCI_CONN_FLAG_DEVICE_PRIVACY = 2,
165 };
166 typedef u8 hci_conn_flags_t;
167
168 struct bdaddr_list_with_flags {
169 struct list_head list;
170 bdaddr_t bdaddr;
171 u8 bdaddr_type;
172 hci_conn_flags_t flags;
173 };
174
175 struct bt_uuid {
176 struct list_head list;
177 u8 uuid[16];
178 u8 size;
179 u8 svc_hint;
180 };
181
182 struct blocked_key {
183 struct list_head list;
184 struct rcu_head rcu;
185 u8 type;
186 u8 val[16];
187 };
188
189 struct smp_csrk {
190 bdaddr_t bdaddr;
191 u8 bdaddr_type;
192 u8 link_type;
193 u8 type;
194 u8 val[16];
195 };
196
197 struct smp_ltk {
198 struct list_head list;
199 struct rcu_head rcu;
200 bdaddr_t bdaddr;
201 u8 bdaddr_type;
202 u8 link_type;
203 u8 authenticated;
204 u8 type;
205 u8 enc_size;
206 __le16 ediv;
207 __le64 rand;
208 u8 val[16];
209 };
210
211 struct smp_irk {
212 struct list_head list;
213 struct rcu_head rcu;
214 bdaddr_t rpa;
215 bdaddr_t bdaddr;
216 u8 addr_type;
217 u8 link_type;
218 u8 val[16];
219 };
220
221 struct link_key {
222 struct list_head list;
223 struct rcu_head rcu;
224 bdaddr_t bdaddr;
225 u8 bdaddr_type;
226 u8 link_type;
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 __u8 mesh;
249 __u8 instance;
250 __u32 flags;
251 __u16 timeout;
252 __u16 remaining_time;
253 __u16 duration;
254 __u16 adv_data_len;
255 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
256 bool adv_data_changed;
257 __u16 scan_rsp_len;
258 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
259 bool scan_rsp_changed;
260 __u16 per_adv_data_len;
261 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
262 __s8 tx_power;
263 __u32 min_interval;
264 __u32 max_interval;
265 bdaddr_t random_addr;
266 bool rpa_expired;
267 struct delayed_work rpa_expired_cb;
268 };
269
270 #define HCI_MAX_ADV_INSTANCES 5
271 #define HCI_DEFAULT_ADV_DURATION 2
272
273 #define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F
274
275 #define DATA_CMP(_d1, _l1, _d2, _l2) \
276 (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2)
277
278 #define ADV_DATA_CMP(_adv, _data, _len) \
279 DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len)
280
281 #define SCAN_RSP_CMP(_adv, _data, _len) \
282 DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len)
283
284 struct monitored_device {
285 struct list_head list;
286
287 bdaddr_t bdaddr;
288 __u8 addr_type;
289 __u16 handle;
290 bool notified;
291 };
292
293 struct adv_pattern {
294 struct list_head list;
295 __u8 ad_type;
296 __u8 offset;
297 __u8 length;
298 __u8 value[HCI_MAX_EXT_AD_LENGTH];
299 };
300
301 struct adv_rssi_thresholds {
302 __s8 low_threshold;
303 __s8 high_threshold;
304 __u16 low_threshold_timeout;
305 __u16 high_threshold_timeout;
306 __u8 sampling_period;
307 };
308
309 struct adv_monitor {
310 struct list_head patterns;
311 struct adv_rssi_thresholds rssi;
312 __u16 handle;
313
314 enum {
315 ADV_MONITOR_STATE_NOT_REGISTERED,
316 ADV_MONITOR_STATE_REGISTERED,
317 ADV_MONITOR_STATE_OFFLOADED
318 } state;
319 };
320
321 #define HCI_MIN_ADV_MONITOR_HANDLE 1
322 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32
323 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16
324 #define HCI_ADV_MONITOR_EXT_NONE 1
325 #define HCI_ADV_MONITOR_EXT_MSFT 2
326
327 #define HCI_MAX_SHORT_NAME_LENGTH 10
328
329 #define HCI_CONN_HANDLE_MAX 0x0eff
330 #define HCI_CONN_HANDLE_UNSET(_handle) (_handle > HCI_CONN_HANDLE_MAX)
331
332 /* Min encryption key size to match with SMP */
333 #define HCI_MIN_ENC_KEY_SIZE 7
334
335 /* Default LE RPA expiry time, 15 minutes */
336 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
337
338 /* Default min/max age of connection information (1s/3s) */
339 #define DEFAULT_CONN_INFO_MIN_AGE 1000
340 #define DEFAULT_CONN_INFO_MAX_AGE 3000
341 /* Default authenticated payload timeout 30s */
342 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8
343
344 struct amp_assoc {
345 __u16 len;
346 __u16 offset;
347 __u16 rem_len;
348 __u16 len_so_far;
349 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
350 };
351
352 #define HCI_MAX_PAGES 3
353
354 struct hci_dev {
355 struct list_head list;
356 struct mutex lock;
357
358 struct ida unset_handle_ida;
359
360 const char *name;
361 unsigned long flags;
362 __u16 id;
363 __u8 bus;
364 __u8 dev_type;
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 __u8 amp_status;
471 __u32 amp_total_bw;
472 __u32 amp_max_bw;
473 __u32 amp_min_latency;
474 __u32 amp_max_pdu;
475 __u8 amp_type;
476 __u16 amp_pal_cap;
477 __u16 amp_assoc_size;
478 __u32 amp_max_flush_to;
479 __u32 amp_be_flush_to;
480
481 struct amp_assoc loc_assoc;
482
483 __u8 flow_ctl_mode;
484
485 unsigned int auto_accept_delay;
486
487 unsigned long quirks;
488
489 atomic_t cmd_cnt;
490 unsigned int acl_cnt;
491 unsigned int sco_cnt;
492 unsigned int le_cnt;
493 unsigned int iso_cnt;
494
495 unsigned int acl_mtu;
496 unsigned int sco_mtu;
497 unsigned int le_mtu;
498 unsigned int iso_mtu;
499 unsigned int acl_pkts;
500 unsigned int sco_pkts;
501 unsigned int le_pkts;
502 unsigned int iso_pkts;
503
504 __u16 block_len;
505 __u16 block_mtu;
506 __u16 num_blocks;
507 __u16 block_cnt;
508
509 unsigned long acl_last_tx;
510 unsigned long sco_last_tx;
511 unsigned long le_last_tx;
512
513 __u8 le_tx_def_phys;
514 __u8 le_rx_def_phys;
515
516 struct workqueue_struct *workqueue;
517 struct workqueue_struct *req_workqueue;
518
519 struct work_struct power_on;
520 struct delayed_work power_off;
521 struct work_struct error_reset;
522 struct work_struct cmd_sync_work;
523 struct list_head cmd_sync_work_list;
524 struct mutex cmd_sync_work_lock;
525 struct mutex unregister_lock;
526 struct work_struct cmd_sync_cancel_work;
527 struct work_struct reenable_adv_work;
528
529 __u16 discov_timeout;
530 struct delayed_work discov_off;
531
532 struct delayed_work service_cache;
533
534 struct delayed_work cmd_timer;
535 struct delayed_work ncmd_timer;
536
537 struct work_struct rx_work;
538 struct work_struct cmd_work;
539 struct work_struct tx_work;
540
541 struct delayed_work le_scan_disable;
542
543 struct sk_buff_head rx_q;
544 struct sk_buff_head raw_q;
545 struct sk_buff_head cmd_q;
546
547 struct sk_buff *sent_cmd;
548 struct sk_buff *recv_event;
549
550 struct mutex req_lock;
551 wait_queue_head_t req_wait_q;
552 __u32 req_status;
553 __u32 req_result;
554 struct sk_buff *req_skb;
555
556 void *smp_data;
557 void *smp_bredr_data;
558
559 struct discovery_state discovery;
560
561 int discovery_old_state;
562 bool discovery_paused;
563 int advertising_old_state;
564 bool advertising_paused;
565
566 struct notifier_block suspend_notifier;
567 enum suspended_state suspend_state_next;
568 enum suspended_state suspend_state;
569 bool scanning_paused;
570 bool suspended;
571 u8 wake_reason;
572 bdaddr_t wake_addr;
573 u8 wake_addr_type;
574
575 struct hci_conn_hash conn_hash;
576
577 struct list_head mesh_pending;
578 struct list_head mgmt_pending;
579 struct list_head reject_list;
580 struct list_head accept_list;
581 struct list_head uuids;
582 struct list_head link_keys;
583 struct list_head long_term_keys;
584 struct list_head identity_resolving_keys;
585 struct list_head remote_oob_data;
586 struct list_head le_accept_list;
587 struct list_head le_resolv_list;
588 struct list_head le_conn_params;
589 struct list_head pend_le_conns;
590 struct list_head pend_le_reports;
591 struct list_head blocked_keys;
592 struct list_head local_codecs;
593
594 struct hci_dev_stats stat;
595
596 atomic_t promisc;
597
598 const char *hw_info;
599 const char *fw_info;
600 struct dentry *debugfs;
601
602 struct hci_devcoredump dump;
603
604 struct device dev;
605
606 struct rfkill *rfkill;
607
608 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
609 hci_conn_flags_t conn_flags;
610
611 __s8 adv_tx_power;
612 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
613 __u8 adv_data_len;
614 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
615 __u8 scan_rsp_data_len;
616 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
617 __u8 per_adv_data_len;
618
619 struct list_head adv_instances;
620 unsigned int adv_instance_cnt;
621 __u8 cur_adv_instance;
622 __u16 adv_instance_timeout;
623 struct delayed_work adv_instance_expire;
624
625 struct idr adv_monitors_idr;
626 unsigned int adv_monitors_cnt;
627
628 __u8 irk[16];
629 __u32 rpa_timeout;
630 struct delayed_work rpa_expired;
631 bdaddr_t rpa;
632
633 struct delayed_work mesh_send_done;
634
635 enum {
636 INTERLEAVE_SCAN_NONE,
637 INTERLEAVE_SCAN_NO_FILTER,
638 INTERLEAVE_SCAN_ALLOWLIST
639 } interleave_scan_state;
640
641 struct delayed_work interleave_scan;
642
643 struct list_head monitored_devices;
644 bool advmon_pend_notify;
645
646 #if IS_ENABLED(CONFIG_BT_LEDS)
647 struct led_trigger *power_led;
648 #endif
649
650 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
651 __u16 msft_opcode;
652 void *msft_data;
653 bool msft_curve_validity;
654 #endif
655
656 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
657 bool aosp_capable;
658 bool aosp_quality_report;
659 #endif
660
661 int (*open)(struct hci_dev *hdev);
662 int (*close)(struct hci_dev *hdev);
663 int (*flush)(struct hci_dev *hdev);
664 int (*setup)(struct hci_dev *hdev);
665 int (*shutdown)(struct hci_dev *hdev);
666 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
667 void (*notify)(struct hci_dev *hdev, unsigned int evt);
668 void (*hw_error)(struct hci_dev *hdev, u8 code);
669 int (*post_init)(struct hci_dev *hdev);
670 int (*set_diag)(struct hci_dev *hdev, bool enable);
671 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
672 void (*cmd_timeout)(struct hci_dev *hdev);
673 void (*reset)(struct hci_dev *hdev);
674 bool (*wakeup)(struct hci_dev *hdev);
675 int (*set_quality_report)(struct hci_dev *hdev, bool enable);
676 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path);
677 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type,
678 struct bt_codec *codec, __u8 *vnd_len,
679 __u8 **vnd_data);
680 };
681
682 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
683
684 enum conn_reasons {
685 CONN_REASON_PAIR_DEVICE,
686 CONN_REASON_L2CAP_CHAN,
687 CONN_REASON_SCO_CONNECT,
688 CONN_REASON_ISO_CONNECT,
689 };
690
691 struct hci_conn {
692 struct list_head list;
693
694 atomic_t refcnt;
695
696 bdaddr_t dst;
697 __u8 dst_type;
698 bdaddr_t src;
699 __u8 src_type;
700 bdaddr_t init_addr;
701 __u8 init_addr_type;
702 bdaddr_t resp_addr;
703 __u8 resp_addr_type;
704 __u8 adv_instance;
705 __u16 handle;
706 __u16 sync_handle;
707 __u16 state;
708 __u8 mode;
709 __u8 type;
710 __u8 role;
711 bool out;
712 __u8 attempt;
713 __u8 dev_class[3];
714 __u8 features[HCI_MAX_PAGES][8];
715 __u16 pkt_type;
716 __u16 link_policy;
717 __u8 key_type;
718 __u8 auth_type;
719 __u8 sec_level;
720 __u8 pending_sec_level;
721 __u8 pin_length;
722 __u8 enc_key_size;
723 __u8 io_capability;
724 __u32 passkey_notify;
725 __u8 passkey_entered;
726 __u16 disc_timeout;
727 __u16 conn_timeout;
728 __u16 setting;
729 __u16 auth_payload_timeout;
730 __u16 le_conn_min_interval;
731 __u16 le_conn_max_interval;
732 __u16 le_conn_interval;
733 __u16 le_conn_latency;
734 __u16 le_supv_timeout;
735 __u8 le_adv_data[HCI_MAX_EXT_AD_LENGTH];
736 __u8 le_adv_data_len;
737 __u8 le_per_adv_data[HCI_MAX_PER_AD_LENGTH];
738 __u8 le_per_adv_data_len;
739 __u8 le_tx_phy;
740 __u8 le_rx_phy;
741 __s8 rssi;
742 __s8 tx_power;
743 __s8 max_tx_power;
744 struct bt_iso_qos iso_qos;
745 unsigned long flags;
746
747 enum conn_reasons conn_reason;
748 __u8 abort_reason;
749
750 __u32 clock;
751 __u16 clock_accuracy;
752
753 unsigned long conn_info_timestamp;
754
755 __u8 remote_cap;
756 __u8 remote_auth;
757 __u8 remote_id;
758
759 unsigned int sent;
760
761 struct sk_buff_head data_q;
762 struct list_head chan_list;
763
764 struct delayed_work disc_work;
765 struct delayed_work auto_accept_work;
766 struct delayed_work idle_work;
767 struct delayed_work le_conn_timeout;
768
769 struct device dev;
770 struct dentry *debugfs;
771
772 struct hci_dev *hdev;
773 void *l2cap_data;
774 void *sco_data;
775 void *iso_data;
776 struct amp_mgr *amp_mgr;
777
778 struct list_head link_list;
779 struct hci_conn *parent;
780 struct hci_link *link;
781
782 struct bt_codec codec;
783
784 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
785 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
786 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
787
788 void (*cleanup)(struct hci_conn *conn);
789 };
790
791 struct hci_link {
792 struct list_head list;
793 struct hci_conn *conn;
794 };
795
796 struct hci_chan {
797 struct list_head list;
798 __u16 handle;
799 struct hci_conn *conn;
800 struct sk_buff_head data_q;
801 unsigned int sent;
802 __u8 state;
803 bool amp;
804 };
805
806 struct hci_conn_params {
807 struct list_head list;
808 struct list_head action;
809
810 bdaddr_t addr;
811 u8 addr_type;
812
813 u16 conn_min_interval;
814 u16 conn_max_interval;
815 u16 conn_latency;
816 u16 supervision_timeout;
817
818 enum {
819 HCI_AUTO_CONN_DISABLED,
820 HCI_AUTO_CONN_REPORT,
821 HCI_AUTO_CONN_DIRECT,
822 HCI_AUTO_CONN_ALWAYS,
823 HCI_AUTO_CONN_LINK_LOSS,
824 HCI_AUTO_CONN_EXPLICIT,
825 } auto_connect;
826
827 struct hci_conn *conn;
828 bool explicit_connect;
829 /* Accessed without hdev->lock: */
830 hci_conn_flags_t flags;
831 u8 privacy_mode;
832 };
833
834 extern struct list_head hci_dev_list;
835 extern struct list_head hci_cb_list;
836 extern rwlock_t hci_dev_list_lock;
837 extern struct mutex hci_cb_list_lock;
838
839 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
840 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
841 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
842 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
843 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
844 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
845 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
846
847 #define hci_dev_clear_volatile_flags(hdev) \
848 do { \
849 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
850 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
851 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
852 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
853 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \
854 } while (0)
855
856 #define hci_dev_le_state_simultaneous(hdev) \
857 (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \
858 (hdev->le_states[4] & 0x08) && /* Central */ \
859 (hdev->le_states[4] & 0x40) && /* Peripheral */ \
860 (hdev->le_states[3] & 0x10)) /* Simultaneous */
861
862 /* ----- HCI interface to upper protocols ----- */
863 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
864 int l2cap_disconn_ind(struct hci_conn *hcon);
865 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
866
867 #if IS_ENABLED(CONFIG_BT_BREDR)
868 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
869 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
870 #else
sco_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 * flags)871 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
872 __u8 *flags)
873 {
874 return 0;
875 }
876
sco_recv_scodata(struct hci_conn * hcon,struct sk_buff * skb)877 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
878 {
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 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
885 #else
iso_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 * flags)886 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
887 __u8 *flags)
888 {
889 return 0;
890 }
iso_recv(struct hci_conn * hcon,struct sk_buff * skb,u16 flags)891 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb,
892 u16 flags)
893 {
894 }
895 #endif
896
897 /* ----- Inquiry cache ----- */
898 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
899 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
900
discovery_init(struct hci_dev * hdev)901 static inline void discovery_init(struct hci_dev *hdev)
902 {
903 hdev->discovery.state = DISCOVERY_STOPPED;
904 INIT_LIST_HEAD(&hdev->discovery.all);
905 INIT_LIST_HEAD(&hdev->discovery.unknown);
906 INIT_LIST_HEAD(&hdev->discovery.resolve);
907 hdev->discovery.report_invalid_rssi = true;
908 hdev->discovery.rssi = HCI_RSSI_INVALID;
909 }
910
hci_discovery_filter_clear(struct hci_dev * hdev)911 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
912 {
913 hdev->discovery.result_filtering = false;
914 hdev->discovery.report_invalid_rssi = true;
915 hdev->discovery.rssi = HCI_RSSI_INVALID;
916 hdev->discovery.uuid_count = 0;
917 kfree(hdev->discovery.uuids);
918 hdev->discovery.uuids = NULL;
919 hdev->discovery.scan_start = 0;
920 hdev->discovery.scan_duration = 0;
921 }
922
923 bool hci_discovery_active(struct hci_dev *hdev);
924
925 void hci_discovery_set_state(struct hci_dev *hdev, int state);
926
inquiry_cache_empty(struct hci_dev * hdev)927 static inline int inquiry_cache_empty(struct hci_dev *hdev)
928 {
929 return list_empty(&hdev->discovery.all);
930 }
931
inquiry_cache_age(struct hci_dev * hdev)932 static inline long inquiry_cache_age(struct hci_dev *hdev)
933 {
934 struct discovery_state *c = &hdev->discovery;
935 return jiffies - c->timestamp;
936 }
937
inquiry_entry_age(struct inquiry_entry * e)938 static inline long inquiry_entry_age(struct inquiry_entry *e)
939 {
940 return jiffies - e->timestamp;
941 }
942
943 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
944 bdaddr_t *bdaddr);
945 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
946 bdaddr_t *bdaddr);
947 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
948 bdaddr_t *bdaddr,
949 int state);
950 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
951 struct inquiry_entry *ie);
952 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
953 bool name_known);
954 void hci_inquiry_cache_flush(struct hci_dev *hdev);
955
956 /* ----- HCI Connections ----- */
957 enum {
958 HCI_CONN_AUTH_PEND,
959 HCI_CONN_ENCRYPT_PEND,
960 HCI_CONN_RSWITCH_PEND,
961 HCI_CONN_MODE_CHANGE_PEND,
962 HCI_CONN_SCO_SETUP_PEND,
963 HCI_CONN_MGMT_CONNECTED,
964 HCI_CONN_SSP_ENABLED,
965 HCI_CONN_SC_ENABLED,
966 HCI_CONN_AES_CCM,
967 HCI_CONN_POWER_SAVE,
968 HCI_CONN_FLUSH_KEY,
969 HCI_CONN_ENCRYPT,
970 HCI_CONN_AUTH,
971 HCI_CONN_SECURE,
972 HCI_CONN_FIPS,
973 HCI_CONN_STK_ENCRYPT,
974 HCI_CONN_AUTH_INITIATOR,
975 HCI_CONN_DROP,
976 HCI_CONN_CANCEL,
977 HCI_CONN_PARAM_REMOVAL_PEND,
978 HCI_CONN_NEW_LINK_KEY,
979 HCI_CONN_SCANNING,
980 HCI_CONN_AUTH_FAILURE,
981 HCI_CONN_PER_ADV,
982 HCI_CONN_BIG_CREATED,
983 HCI_CONN_CREATE_CIS,
984 HCI_CONN_BIG_SYNC,
985 HCI_CONN_BIG_SYNC_FAILED,
986 HCI_CONN_PA_SYNC,
987 HCI_CONN_PA_SYNC_FAILED,
988 };
989
hci_conn_ssp_enabled(struct hci_conn * conn)990 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
991 {
992 struct hci_dev *hdev = conn->hdev;
993 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
994 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
995 }
996
hci_conn_sc_enabled(struct hci_conn * conn)997 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
998 {
999 struct hci_dev *hdev = conn->hdev;
1000 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
1001 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
1002 }
1003
hci_conn_hash_add(struct hci_dev * hdev,struct hci_conn * c)1004 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
1005 {
1006 struct hci_conn_hash *h = &hdev->conn_hash;
1007 list_add_tail_rcu(&c->list, &h->list);
1008 switch (c->type) {
1009 case ACL_LINK:
1010 h->acl_num++;
1011 break;
1012 case AMP_LINK:
1013 h->amp_num++;
1014 break;
1015 case LE_LINK:
1016 h->le_num++;
1017 if (c->role == HCI_ROLE_SLAVE)
1018 h->le_num_peripheral++;
1019 break;
1020 case SCO_LINK:
1021 case ESCO_LINK:
1022 h->sco_num++;
1023 break;
1024 case ISO_LINK:
1025 h->iso_num++;
1026 break;
1027 }
1028 }
1029
hci_conn_hash_del(struct hci_dev * hdev,struct hci_conn * c)1030 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
1031 {
1032 struct hci_conn_hash *h = &hdev->conn_hash;
1033
1034 list_del_rcu(&c->list);
1035 synchronize_rcu();
1036
1037 switch (c->type) {
1038 case ACL_LINK:
1039 h->acl_num--;
1040 break;
1041 case AMP_LINK:
1042 h->amp_num--;
1043 break;
1044 case LE_LINK:
1045 h->le_num--;
1046 if (c->role == HCI_ROLE_SLAVE)
1047 h->le_num_peripheral--;
1048 break;
1049 case SCO_LINK:
1050 case ESCO_LINK:
1051 h->sco_num--;
1052 break;
1053 case ISO_LINK:
1054 h->iso_num--;
1055 break;
1056 }
1057 }
1058
hci_conn_num(struct hci_dev * hdev,__u8 type)1059 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
1060 {
1061 struct hci_conn_hash *h = &hdev->conn_hash;
1062 switch (type) {
1063 case ACL_LINK:
1064 return h->acl_num;
1065 case AMP_LINK:
1066 return h->amp_num;
1067 case LE_LINK:
1068 return h->le_num;
1069 case SCO_LINK:
1070 case ESCO_LINK:
1071 return h->sco_num;
1072 case ISO_LINK:
1073 return h->iso_num;
1074 default:
1075 return 0;
1076 }
1077 }
1078
hci_conn_count(struct hci_dev * hdev)1079 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
1080 {
1081 struct hci_conn_hash *c = &hdev->conn_hash;
1082
1083 return c->acl_num + c->amp_num + c->sco_num + c->le_num + c->iso_num;
1084 }
1085
hci_conn_lookup_type(struct hci_dev * hdev,__u16 handle)1086 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
1087 {
1088 struct hci_conn_hash *h = &hdev->conn_hash;
1089 struct hci_conn *c;
1090 __u8 type = INVALID_LINK;
1091
1092 rcu_read_lock();
1093
1094 list_for_each_entry_rcu(c, &h->list, list) {
1095 if (c->handle == handle) {
1096 type = c->type;
1097 break;
1098 }
1099 }
1100
1101 rcu_read_unlock();
1102
1103 return type;
1104 }
1105
hci_conn_hash_lookup_bis(struct hci_dev * hdev,bdaddr_t * ba,__u8 bis)1106 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev,
1107 bdaddr_t *ba, __u8 bis)
1108 {
1109 struct hci_conn_hash *h = &hdev->conn_hash;
1110 struct hci_conn *c;
1111
1112 rcu_read_lock();
1113
1114 list_for_each_entry_rcu(c, &h->list, list) {
1115 if (bacmp(&c->dst, ba) || c->type != ISO_LINK)
1116 continue;
1117
1118 if (c->iso_qos.bcast.bis == bis) {
1119 rcu_read_unlock();
1120 return c;
1121 }
1122 }
1123 rcu_read_unlock();
1124
1125 return NULL;
1126 }
1127
1128 static inline struct hci_conn *
hci_conn_hash_lookup_per_adv_bis(struct hci_dev * hdev,bdaddr_t * ba,__u8 big,__u8 bis)1129 hci_conn_hash_lookup_per_adv_bis(struct hci_dev *hdev,
1130 bdaddr_t *ba,
1131 __u8 big, __u8 bis)
1132 {
1133 struct hci_conn_hash *h = &hdev->conn_hash;
1134 struct hci_conn *c;
1135
1136 rcu_read_lock();
1137
1138 list_for_each_entry_rcu(c, &h->list, list) {
1139 if (bacmp(&c->dst, ba) || c->type != ISO_LINK ||
1140 !test_bit(HCI_CONN_PER_ADV, &c->flags))
1141 continue;
1142
1143 if (c->iso_qos.bcast.big == big &&
1144 c->iso_qos.bcast.bis == bis) {
1145 rcu_read_unlock();
1146 return c;
1147 }
1148 }
1149 rcu_read_unlock();
1150
1151 return NULL;
1152 }
1153
hci_conn_hash_lookup_handle(struct hci_dev * hdev,__u16 handle)1154 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
1155 __u16 handle)
1156 {
1157 struct hci_conn_hash *h = &hdev->conn_hash;
1158 struct hci_conn *c;
1159
1160 rcu_read_lock();
1161
1162 list_for_each_entry_rcu(c, &h->list, list) {
1163 if (c->handle == handle) {
1164 rcu_read_unlock();
1165 return c;
1166 }
1167 }
1168 rcu_read_unlock();
1169
1170 return NULL;
1171 }
1172
hci_conn_hash_lookup_ba(struct hci_dev * hdev,__u8 type,bdaddr_t * ba)1173 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
1174 __u8 type, bdaddr_t *ba)
1175 {
1176 struct hci_conn_hash *h = &hdev->conn_hash;
1177 struct hci_conn *c;
1178
1179 rcu_read_lock();
1180
1181 list_for_each_entry_rcu(c, &h->list, list) {
1182 if (c->type == type && !bacmp(&c->dst, ba)) {
1183 rcu_read_unlock();
1184 return c;
1185 }
1186 }
1187
1188 rcu_read_unlock();
1189
1190 return NULL;
1191 }
1192
hci_conn_hash_lookup_le(struct hci_dev * hdev,bdaddr_t * ba,__u8 ba_type)1193 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
1194 bdaddr_t *ba,
1195 __u8 ba_type)
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 (c->type != LE_LINK)
1204 continue;
1205
1206 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1207 rcu_read_unlock();
1208 return c;
1209 }
1210 }
1211
1212 rcu_read_unlock();
1213
1214 return NULL;
1215 }
1216
hci_conn_hash_lookup_cis(struct hci_dev * hdev,bdaddr_t * ba,__u8 ba_type,__u8 cig,__u8 id)1217 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev,
1218 bdaddr_t *ba,
1219 __u8 ba_type,
1220 __u8 cig,
1221 __u8 id)
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->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY))
1230 continue;
1231
1232 /* Match CIG ID if set */
1233 if (cig != c->iso_qos.ucast.cig)
1234 continue;
1235
1236 /* Match CIS ID if set */
1237 if (id != c->iso_qos.ucast.cis)
1238 continue;
1239
1240 /* Match destination address if set */
1241 if (!ba || (ba_type == c->dst_type && !bacmp(&c->dst, ba))) {
1242 rcu_read_unlock();
1243 return c;
1244 }
1245 }
1246
1247 rcu_read_unlock();
1248
1249 return NULL;
1250 }
1251
hci_conn_hash_lookup_cig(struct hci_dev * hdev,__u8 handle)1252 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev,
1253 __u8 handle)
1254 {
1255 struct hci_conn_hash *h = &hdev->conn_hash;
1256 struct hci_conn *c;
1257
1258 rcu_read_lock();
1259
1260 list_for_each_entry_rcu(c, &h->list, list) {
1261 if (c->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY))
1262 continue;
1263
1264 if (handle == c->iso_qos.ucast.cig) {
1265 rcu_read_unlock();
1266 return c;
1267 }
1268 }
1269
1270 rcu_read_unlock();
1271
1272 return NULL;
1273 }
1274
hci_conn_hash_lookup_big(struct hci_dev * hdev,__u8 handle)1275 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev,
1276 __u8 handle)
1277 {
1278 struct hci_conn_hash *h = &hdev->conn_hash;
1279 struct hci_conn *c;
1280
1281 rcu_read_lock();
1282
1283 list_for_each_entry_rcu(c, &h->list, list) {
1284 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK)
1285 continue;
1286
1287 if (handle == c->iso_qos.bcast.big) {
1288 rcu_read_unlock();
1289 return c;
1290 }
1291 }
1292
1293 rcu_read_unlock();
1294
1295 return NULL;
1296 }
1297
1298 static inline struct hci_conn *
hci_conn_hash_lookup_big_state(struct hci_dev * hdev,__u8 handle,__u16 state)1299 hci_conn_hash_lookup_big_state(struct hci_dev *hdev, __u8 handle, __u16 state)
1300 {
1301 struct hci_conn_hash *h = &hdev->conn_hash;
1302 struct hci_conn *c;
1303
1304 rcu_read_lock();
1305
1306 list_for_each_entry_rcu(c, &h->list, list) {
1307 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK ||
1308 c->state != state)
1309 continue;
1310
1311 if (handle == c->iso_qos.bcast.big) {
1312 rcu_read_unlock();
1313 return c;
1314 }
1315 }
1316
1317 rcu_read_unlock();
1318
1319 return NULL;
1320 }
1321
1322 static inline struct hci_conn *
hci_conn_hash_lookup_pa_sync_big_handle(struct hci_dev * hdev,__u8 big)1323 hci_conn_hash_lookup_pa_sync_big_handle(struct hci_dev *hdev, __u8 big)
1324 {
1325 struct hci_conn_hash *h = &hdev->conn_hash;
1326 struct hci_conn *c;
1327
1328 rcu_read_lock();
1329
1330 list_for_each_entry_rcu(c, &h->list, list) {
1331 if (c->type != ISO_LINK ||
1332 !test_bit(HCI_CONN_PA_SYNC, &c->flags))
1333 continue;
1334
1335 if (c->iso_qos.bcast.big == big) {
1336 rcu_read_unlock();
1337 return c;
1338 }
1339 }
1340 rcu_read_unlock();
1341
1342 return NULL;
1343 }
1344
1345 static inline struct hci_conn *
hci_conn_hash_lookup_pa_sync_handle(struct hci_dev * hdev,__u16 sync_handle)1346 hci_conn_hash_lookup_pa_sync_handle(struct hci_dev *hdev, __u16 sync_handle)
1347 {
1348 struct hci_conn_hash *h = &hdev->conn_hash;
1349 struct hci_conn *c;
1350
1351 rcu_read_lock();
1352
1353 list_for_each_entry_rcu(c, &h->list, list) {
1354 if (c->type != ISO_LINK ||
1355 !test_bit(HCI_CONN_PA_SYNC, &c->flags))
1356 continue;
1357
1358 if (c->sync_handle == sync_handle) {
1359 rcu_read_unlock();
1360 return c;
1361 }
1362 }
1363 rcu_read_unlock();
1364
1365 return NULL;
1366 }
1367
hci_conn_hash_lookup_state(struct hci_dev * hdev,__u8 type,__u16 state)1368 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1369 __u8 type, __u16 state)
1370 {
1371 struct hci_conn_hash *h = &hdev->conn_hash;
1372 struct hci_conn *c;
1373
1374 rcu_read_lock();
1375
1376 list_for_each_entry_rcu(c, &h->list, list) {
1377 if (c->type == type && c->state == state) {
1378 rcu_read_unlock();
1379 return c;
1380 }
1381 }
1382
1383 rcu_read_unlock();
1384
1385 return NULL;
1386 }
1387
1388 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)1389 static inline void hci_conn_hash_list_state(struct hci_dev *hdev,
1390 hci_conn_func_t func, __u8 type,
1391 __u16 state, void *data)
1392 {
1393 struct hci_conn_hash *h = &hdev->conn_hash;
1394 struct hci_conn *c;
1395
1396 if (!func)
1397 return;
1398
1399 rcu_read_lock();
1400
1401 list_for_each_entry_rcu(c, &h->list, list) {
1402 if (c->type == type && c->state == state)
1403 func(c, data);
1404 }
1405
1406 rcu_read_unlock();
1407 }
1408
hci_conn_hash_list_flag(struct hci_dev * hdev,hci_conn_func_t func,__u8 type,__u8 flag,void * data)1409 static inline void hci_conn_hash_list_flag(struct hci_dev *hdev,
1410 hci_conn_func_t func, __u8 type,
1411 __u8 flag, void *data)
1412 {
1413 struct hci_conn_hash *h = &hdev->conn_hash;
1414 struct hci_conn *c;
1415
1416 if (!func)
1417 return;
1418
1419 rcu_read_lock();
1420
1421 list_for_each_entry_rcu(c, &h->list, list) {
1422 if (c->type == type && test_bit(flag, &c->flags))
1423 func(c, data);
1424 }
1425
1426 rcu_read_unlock();
1427 }
1428
hci_lookup_le_connect(struct hci_dev * hdev)1429 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1430 {
1431 struct hci_conn_hash *h = &hdev->conn_hash;
1432 struct hci_conn *c;
1433
1434 rcu_read_lock();
1435
1436 list_for_each_entry_rcu(c, &h->list, list) {
1437 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1438 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1439 rcu_read_unlock();
1440 return c;
1441 }
1442 }
1443
1444 rcu_read_unlock();
1445
1446 return NULL;
1447 }
1448
1449 /* Returns true if an le connection is in the scanning state */
hci_is_le_conn_scanning(struct hci_dev * hdev)1450 static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev)
1451 {
1452 struct hci_conn_hash *h = &hdev->conn_hash;
1453 struct hci_conn *c;
1454
1455 rcu_read_lock();
1456
1457 list_for_each_entry_rcu(c, &h->list, list) {
1458 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1459 test_bit(HCI_CONN_SCANNING, &c->flags)) {
1460 rcu_read_unlock();
1461 return true;
1462 }
1463 }
1464
1465 rcu_read_unlock();
1466
1467 return false;
1468 }
1469
1470 int hci_disconnect(struct hci_conn *conn, __u8 reason);
1471 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1472 void hci_sco_setup(struct hci_conn *conn, __u8 status);
1473 bool hci_iso_setup_path(struct hci_conn *conn);
1474 int hci_le_create_cis_pending(struct hci_dev *hdev);
1475 int hci_conn_check_create_cis(struct hci_conn *conn);
1476
1477 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1478 u8 role, u16 handle);
1479 struct hci_conn *hci_conn_add_unset(struct hci_dev *hdev, int type,
1480 bdaddr_t *dst, u8 role);
1481 void hci_conn_del(struct hci_conn *conn);
1482 void hci_conn_hash_flush(struct hci_dev *hdev);
1483 void hci_conn_check_pending(struct hci_dev *hdev);
1484
1485 struct hci_chan *hci_chan_create(struct hci_conn *conn);
1486 void hci_chan_del(struct hci_chan *chan);
1487 void hci_chan_list_flush(struct hci_conn *conn);
1488 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1489
1490 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1491 u8 dst_type, u8 sec_level,
1492 u16 conn_timeout,
1493 enum conn_reasons conn_reason);
1494 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1495 u8 dst_type, bool dst_resolved, u8 sec_level,
1496 u16 conn_timeout, u8 role);
1497 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1498 u8 sec_level, u8 auth_type,
1499 enum conn_reasons conn_reason);
1500 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1501 __u16 setting, struct bt_codec *codec);
1502 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
1503 __u8 dst_type, struct bt_iso_qos *qos);
1504 struct hci_conn *hci_bind_bis(struct hci_dev *hdev, bdaddr_t *dst,
1505 struct bt_iso_qos *qos,
1506 __u8 base_len, __u8 *base);
1507 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
1508 __u8 dst_type, struct bt_iso_qos *qos);
1509 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
1510 __u8 dst_type, struct bt_iso_qos *qos,
1511 __u8 data_len, __u8 *data);
1512 int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type,
1513 __u8 sid, struct bt_iso_qos *qos);
1514 int hci_le_big_create_sync(struct hci_dev *hdev, struct hci_conn *hcon,
1515 struct bt_iso_qos *qos,
1516 __u16 sync_handle, __u8 num_bis, __u8 bis[]);
1517 int hci_conn_check_link_mode(struct hci_conn *conn);
1518 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1519 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1520 bool initiator);
1521 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1522
1523 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1524
1525 void hci_conn_failed(struct hci_conn *conn, u8 status);
1526 u8 hci_conn_set_handle(struct hci_conn *conn, u16 handle);
1527
1528 /*
1529 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1530 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1531 * working or anything else. They just guarantee that the object is available
1532 * and can be dereferenced. So you can use its locks, local variables and any
1533 * other constant data.
1534 * Before accessing runtime data, you _must_ lock the object and then check that
1535 * it is still running. As soon as you release the locks, the connection might
1536 * get dropped, though.
1537 *
1538 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1539 * how long the underlying connection is held. So every channel that runs on the
1540 * hci_conn object calls this to prevent the connection from disappearing. As
1541 * long as you hold a device, you must also guarantee that you have a valid
1542 * reference to the device via hci_conn_get() (or the initial reference from
1543 * hci_conn_add()).
1544 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1545 * break because nobody cares for that. But this means, we cannot use
1546 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1547 */
1548
hci_conn_get(struct hci_conn * conn)1549 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1550 {
1551 get_device(&conn->dev);
1552 return conn;
1553 }
1554
hci_conn_put(struct hci_conn * conn)1555 static inline void hci_conn_put(struct hci_conn *conn)
1556 {
1557 put_device(&conn->dev);
1558 }
1559
hci_conn_hold(struct hci_conn * conn)1560 static inline struct hci_conn *hci_conn_hold(struct hci_conn *conn)
1561 {
1562 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1563
1564 atomic_inc(&conn->refcnt);
1565 cancel_delayed_work(&conn->disc_work);
1566
1567 return conn;
1568 }
1569
hci_conn_drop(struct hci_conn * conn)1570 static inline void hci_conn_drop(struct hci_conn *conn)
1571 {
1572 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1573
1574 if (atomic_dec_and_test(&conn->refcnt)) {
1575 unsigned long timeo;
1576
1577 switch (conn->type) {
1578 case ACL_LINK:
1579 case LE_LINK:
1580 cancel_delayed_work(&conn->idle_work);
1581 if (conn->state == BT_CONNECTED) {
1582 timeo = conn->disc_timeout;
1583 if (!conn->out)
1584 timeo *= 2;
1585 } else {
1586 timeo = 0;
1587 }
1588 break;
1589
1590 case AMP_LINK:
1591 timeo = conn->disc_timeout;
1592 break;
1593
1594 default:
1595 timeo = 0;
1596 break;
1597 }
1598
1599 cancel_delayed_work(&conn->disc_work);
1600 queue_delayed_work(conn->hdev->workqueue,
1601 &conn->disc_work, timeo);
1602 }
1603 }
1604
1605 /* ----- HCI Devices ----- */
hci_dev_put(struct hci_dev * d)1606 static inline void hci_dev_put(struct hci_dev *d)
1607 {
1608 BT_DBG("%s orig refcnt %d", d->name,
1609 kref_read(&d->dev.kobj.kref));
1610
1611 put_device(&d->dev);
1612 }
1613
hci_dev_hold(struct hci_dev * d)1614 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1615 {
1616 BT_DBG("%s orig refcnt %d", d->name,
1617 kref_read(&d->dev.kobj.kref));
1618
1619 get_device(&d->dev);
1620 return d;
1621 }
1622
1623 #define hci_dev_lock(d) mutex_lock(&d->lock)
1624 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
1625
1626 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1627 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1628
hci_get_drvdata(struct hci_dev * hdev)1629 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1630 {
1631 return dev_get_drvdata(&hdev->dev);
1632 }
1633
hci_set_drvdata(struct hci_dev * hdev,void * data)1634 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1635 {
1636 dev_set_drvdata(&hdev->dev, data);
1637 }
1638
hci_get_priv(struct hci_dev * hdev)1639 static inline void *hci_get_priv(struct hci_dev *hdev)
1640 {
1641 return (char *)hdev + sizeof(*hdev);
1642 }
1643
1644 struct hci_dev *hci_dev_get(int index);
1645 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1646
1647 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);
1648
hci_alloc_dev(void)1649 static inline struct hci_dev *hci_alloc_dev(void)
1650 {
1651 return hci_alloc_dev_priv(0);
1652 }
1653
1654 void hci_free_dev(struct hci_dev *hdev);
1655 int hci_register_dev(struct hci_dev *hdev);
1656 void hci_unregister_dev(struct hci_dev *hdev);
1657 void hci_release_dev(struct hci_dev *hdev);
1658 int hci_register_suspend_notifier(struct hci_dev *hdev);
1659 int hci_unregister_suspend_notifier(struct hci_dev *hdev);
1660 int hci_suspend_dev(struct hci_dev *hdev);
1661 int hci_resume_dev(struct hci_dev *hdev);
1662 int hci_reset_dev(struct hci_dev *hdev);
1663 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1664 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1665 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1666 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1667
hci_set_msft_opcode(struct hci_dev * hdev,__u16 opcode)1668 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1669 {
1670 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
1671 hdev->msft_opcode = opcode;
1672 #endif
1673 }
1674
hci_set_aosp_capable(struct hci_dev * hdev)1675 static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1676 {
1677 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
1678 hdev->aosp_capable = true;
1679 #endif
1680 }
1681
hci_devcd_setup(struct hci_dev * hdev)1682 static inline void hci_devcd_setup(struct hci_dev *hdev)
1683 {
1684 #ifdef CONFIG_DEV_COREDUMP
1685 INIT_WORK(&hdev->dump.dump_rx, hci_devcd_rx);
1686 INIT_DELAYED_WORK(&hdev->dump.dump_timeout, hci_devcd_timeout);
1687 skb_queue_head_init(&hdev->dump.dump_q);
1688 #endif
1689 }
1690
1691 int hci_dev_open(__u16 dev);
1692 int hci_dev_close(__u16 dev);
1693 int hci_dev_do_close(struct hci_dev *hdev);
1694 int hci_dev_reset(__u16 dev);
1695 int hci_dev_reset_stat(__u16 dev);
1696 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1697 int hci_get_dev_list(void __user *arg);
1698 int hci_get_dev_info(void __user *arg);
1699 int hci_get_conn_list(void __user *arg);
1700 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1701 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1702 int hci_inquiry(void __user *arg);
1703
1704 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1705 bdaddr_t *bdaddr, u8 type);
1706 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1707 struct list_head *list, bdaddr_t *bdaddr,
1708 u8 type);
1709 struct bdaddr_list_with_flags *
1710 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1711 u8 type);
1712 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1713 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1714 u8 type, u8 *peer_irk, u8 *local_irk);
1715 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1716 u8 type, u32 flags);
1717 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1718 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1719 u8 type);
1720 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1721 u8 type);
1722 void hci_bdaddr_list_clear(struct list_head *list);
1723
1724 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1725 bdaddr_t *addr, u8 addr_type);
1726 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1727 bdaddr_t *addr, u8 addr_type);
1728 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1729 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1730 void hci_conn_params_free(struct hci_conn_params *param);
1731
1732 void hci_pend_le_list_del_init(struct hci_conn_params *param);
1733 void hci_pend_le_list_add(struct hci_conn_params *param,
1734 struct list_head *list);
1735 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1736 bdaddr_t *addr,
1737 u8 addr_type);
1738
1739 void hci_uuids_clear(struct hci_dev *hdev);
1740
1741 void hci_link_keys_clear(struct hci_dev *hdev);
1742 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1743 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1744 bdaddr_t *bdaddr, u8 *val, u8 type,
1745 u8 pin_len, bool *persistent);
1746 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1747 u8 addr_type, u8 type, u8 authenticated,
1748 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1749 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1750 u8 addr_type, u8 role);
1751 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1752 void hci_smp_ltks_clear(struct hci_dev *hdev);
1753 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1754
1755 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1756 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1757 u8 addr_type);
1758 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1759 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1760 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1761 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1762 void hci_blocked_keys_clear(struct hci_dev *hdev);
1763 void hci_smp_irks_clear(struct hci_dev *hdev);
1764
1765 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1766
1767 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1768 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1769 bdaddr_t *bdaddr, u8 bdaddr_type);
1770 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1771 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1772 u8 *hash256, u8 *rand256);
1773 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1774 u8 bdaddr_type);
1775
1776 void hci_adv_instances_clear(struct hci_dev *hdev);
1777 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1778 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1779 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance,
1780 u32 flags, u16 adv_data_len, u8 *adv_data,
1781 u16 scan_rsp_len, u8 *scan_rsp_data,
1782 u16 timeout, u16 duration, s8 tx_power,
1783 u32 min_interval, u32 max_interval,
1784 u8 mesh_handle);
1785 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance,
1786 u32 flags, u8 data_len, u8 *data,
1787 u32 min_interval, u32 max_interval);
1788 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1789 u16 adv_data_len, u8 *adv_data,
1790 u16 scan_rsp_len, u8 *scan_rsp_data);
1791 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1792 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1793 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance);
1794 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance);
1795
1796 void hci_adv_monitors_clear(struct hci_dev *hdev);
1797 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1798 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1799 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle);
1800 int hci_remove_all_adv_monitor(struct hci_dev *hdev);
1801 bool hci_is_adv_monitoring(struct hci_dev *hdev);
1802 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1803
1804 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1805
1806 void hci_init_sysfs(struct hci_dev *hdev);
1807 void hci_conn_init_sysfs(struct hci_conn *conn);
1808 void hci_conn_add_sysfs(struct hci_conn *conn);
1809 void hci_conn_del_sysfs(struct hci_conn *conn);
1810
1811 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1812 #define GET_HCIDEV_DEV(hdev) ((hdev)->dev.parent)
1813
1814 /* ----- LMP capabilities ----- */
1815 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1816 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1817 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1818 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1819 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1820 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1821 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1822 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1823 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1824 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1825 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1826 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1827 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1828 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1829 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1830 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1831 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1832 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1833 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1834 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1835 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1836 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1837 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1838 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1839
1840 /* ----- Extended LMP capabilities ----- */
1841 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1842 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1843 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1844 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1845 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1846 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1847
1848 /* ----- Host capabilities ----- */
1849 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1850 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1851 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1852 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1853
1854 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1855 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1856 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1857 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1858 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \
1859 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED))
1860 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \
1861 !adv->rpa_expired)
1862
1863 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1864 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1865
1866 #define le_2m_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_2M))
1867
1868 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1869 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1870
1871 #define le_coded_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_CODED) && \
1872 !test_bit(HCI_QUIRK_BROKEN_LE_CODED, \
1873 &(dev)->quirks))
1874
1875 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1876 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1877
1878 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1879
1880 /* Use LL Privacy based address resolution if supported */
1881 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \
1882 hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY))
1883
1884 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \
1885 (hdev->commands[39] & 0x04))
1886
1887 /* Use enhanced synchronous connection if command is supported and its quirk
1888 * has not been set.
1889 */
1890 #define enhanced_sync_conn_capable(dev) \
1891 (((dev)->commands[29] & 0x08) && \
1892 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks))
1893
1894 /* Use ext scanning if set ext scan param and ext scan enable is supported */
1895 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1896 ((dev)->commands[37] & 0x40) && \
1897 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks))
1898
1899 /* Use ext create connection if command is supported */
1900 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1901
1902 /* Extended advertising support */
1903 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1904
1905 /* Maximum advertising length */
1906 #define max_adv_len(dev) \
1907 (ext_adv_capable(dev) ? HCI_MAX_EXT_AD_LENGTH : HCI_MAX_AD_LENGTH)
1908
1909 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789:
1910 *
1911 * C24: Mandatory if the LE Controller supports Connection State and either
1912 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported
1913 */
1914 #define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \
1915 ext_adv_capable(dev))
1916
1917 /* Periodic advertising support */
1918 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV))
1919
1920 /* CIS Master/Slave and BIS support */
1921 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev))
1922 #define cis_capable(dev) \
1923 (cis_central_capable(dev) || cis_peripheral_capable(dev))
1924 #define cis_central_capable(dev) \
1925 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL)
1926 #define cis_peripheral_capable(dev) \
1927 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL)
1928 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER)
1929 #define sync_recv_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_SYNC_RECEIVER)
1930
1931 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \
1932 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks)))
1933
1934 /* ----- HCI protocols ----- */
1935 #define HCI_PROTO_DEFER 0x01
1936
hci_proto_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 type,__u8 * flags)1937 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1938 __u8 type, __u8 *flags)
1939 {
1940 switch (type) {
1941 case ACL_LINK:
1942 return l2cap_connect_ind(hdev, bdaddr);
1943
1944 case SCO_LINK:
1945 case ESCO_LINK:
1946 return sco_connect_ind(hdev, bdaddr, flags);
1947
1948 case ISO_LINK:
1949 return iso_connect_ind(hdev, bdaddr, flags);
1950
1951 default:
1952 BT_ERR("unknown link type %d", type);
1953 return -EINVAL;
1954 }
1955 }
1956
hci_proto_disconn_ind(struct hci_conn * conn)1957 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1958 {
1959 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1960 return HCI_ERROR_REMOTE_USER_TERM;
1961
1962 return l2cap_disconn_ind(conn);
1963 }
1964
1965 /* ----- HCI callbacks ----- */
1966 struct hci_cb {
1967 struct list_head list;
1968
1969 char *name;
1970
1971 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1972 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1973 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1974 __u8 encrypt);
1975 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1976 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1977 };
1978
hci_connect_cfm(struct hci_conn * conn,__u8 status)1979 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1980 {
1981 struct hci_cb *cb;
1982
1983 mutex_lock(&hci_cb_list_lock);
1984 list_for_each_entry(cb, &hci_cb_list, list) {
1985 if (cb->connect_cfm)
1986 cb->connect_cfm(conn, status);
1987 }
1988 mutex_unlock(&hci_cb_list_lock);
1989
1990 if (conn->connect_cfm_cb)
1991 conn->connect_cfm_cb(conn, status);
1992 }
1993
hci_disconn_cfm(struct hci_conn * conn,__u8 reason)1994 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1995 {
1996 struct hci_cb *cb;
1997
1998 mutex_lock(&hci_cb_list_lock);
1999 list_for_each_entry(cb, &hci_cb_list, list) {
2000 if (cb->disconn_cfm)
2001 cb->disconn_cfm(conn, reason);
2002 }
2003 mutex_unlock(&hci_cb_list_lock);
2004
2005 if (conn->disconn_cfm_cb)
2006 conn->disconn_cfm_cb(conn, reason);
2007 }
2008
hci_auth_cfm(struct hci_conn * conn,__u8 status)2009 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
2010 {
2011 struct hci_cb *cb;
2012 __u8 encrypt;
2013
2014 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
2015 return;
2016
2017 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
2018
2019 mutex_lock(&hci_cb_list_lock);
2020 list_for_each_entry(cb, &hci_cb_list, list) {
2021 if (cb->security_cfm)
2022 cb->security_cfm(conn, status, encrypt);
2023 }
2024 mutex_unlock(&hci_cb_list_lock);
2025
2026 if (conn->security_cfm_cb)
2027 conn->security_cfm_cb(conn, status);
2028 }
2029
hci_encrypt_cfm(struct hci_conn * conn,__u8 status)2030 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
2031 {
2032 struct hci_cb *cb;
2033 __u8 encrypt;
2034
2035 if (conn->state == BT_CONFIG) {
2036 if (!status)
2037 conn->state = BT_CONNECTED;
2038
2039 hci_connect_cfm(conn, status);
2040 hci_conn_drop(conn);
2041 return;
2042 }
2043
2044 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
2045 encrypt = 0x00;
2046 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
2047 encrypt = 0x02;
2048 else
2049 encrypt = 0x01;
2050
2051 if (!status) {
2052 if (conn->sec_level == BT_SECURITY_SDP)
2053 conn->sec_level = BT_SECURITY_LOW;
2054
2055 if (conn->pending_sec_level > conn->sec_level)
2056 conn->sec_level = conn->pending_sec_level;
2057 }
2058
2059 mutex_lock(&hci_cb_list_lock);
2060 list_for_each_entry(cb, &hci_cb_list, list) {
2061 if (cb->security_cfm)
2062 cb->security_cfm(conn, status, encrypt);
2063 }
2064 mutex_unlock(&hci_cb_list_lock);
2065
2066 if (conn->security_cfm_cb)
2067 conn->security_cfm_cb(conn, status);
2068 }
2069
hci_key_change_cfm(struct hci_conn * conn,__u8 status)2070 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
2071 {
2072 struct hci_cb *cb;
2073
2074 mutex_lock(&hci_cb_list_lock);
2075 list_for_each_entry(cb, &hci_cb_list, list) {
2076 if (cb->key_change_cfm)
2077 cb->key_change_cfm(conn, status);
2078 }
2079 mutex_unlock(&hci_cb_list_lock);
2080 }
2081
hci_role_switch_cfm(struct hci_conn * conn,__u8 status,__u8 role)2082 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
2083 __u8 role)
2084 {
2085 struct hci_cb *cb;
2086
2087 mutex_lock(&hci_cb_list_lock);
2088 list_for_each_entry(cb, &hci_cb_list, list) {
2089 if (cb->role_switch_cfm)
2090 cb->role_switch_cfm(conn, status, role);
2091 }
2092 mutex_unlock(&hci_cb_list_lock);
2093 }
2094
hci_bdaddr_is_rpa(bdaddr_t * bdaddr,u8 addr_type)2095 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
2096 {
2097 if (addr_type != ADDR_LE_DEV_RANDOM)
2098 return false;
2099
2100 if ((bdaddr->b[5] & 0xc0) == 0x40)
2101 return true;
2102
2103 return false;
2104 }
2105
hci_is_identity_address(bdaddr_t * addr,u8 addr_type)2106 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
2107 {
2108 if (addr_type == ADDR_LE_DEV_PUBLIC)
2109 return true;
2110
2111 /* Check for Random Static address type */
2112 if ((addr->b[5] & 0xc0) == 0xc0)
2113 return true;
2114
2115 return false;
2116 }
2117
hci_get_irk(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 addr_type)2118 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
2119 bdaddr_t *bdaddr, u8 addr_type)
2120 {
2121 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
2122 return NULL;
2123
2124 return hci_find_irk_by_rpa(hdev, bdaddr);
2125 }
2126
hci_check_conn_params(u16 min,u16 max,u16 latency,u16 to_multiplier)2127 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
2128 u16 to_multiplier)
2129 {
2130 u16 max_latency;
2131
2132 if (min > max || min < 6 || max > 3200)
2133 return -EINVAL;
2134
2135 if (to_multiplier < 10 || to_multiplier > 3200)
2136 return -EINVAL;
2137
2138 if (max >= to_multiplier * 8)
2139 return -EINVAL;
2140
2141 max_latency = (to_multiplier * 4 / max) - 1;
2142 if (latency > 499 || latency > max_latency)
2143 return -EINVAL;
2144
2145 return 0;
2146 }
2147
2148 int hci_register_cb(struct hci_cb *hcb);
2149 int hci_unregister_cb(struct hci_cb *hcb);
2150
2151 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
2152 const void *param);
2153
2154 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
2155 const void *param);
2156 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
2157 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
2158 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb);
2159
2160 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
2161 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event);
2162
2163 u32 hci_conn_get_phy(struct hci_conn *conn);
2164
2165 /* ----- HCI Sockets ----- */
2166 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
2167 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
2168 int flag, struct sock *skip_sk);
2169 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
2170 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
2171 void *data, u16 data_len, ktime_t tstamp,
2172 int flag, struct sock *skip_sk);
2173
2174 void hci_sock_dev_event(struct hci_dev *hdev, int event);
2175
2176 #define HCI_MGMT_VAR_LEN BIT(0)
2177 #define HCI_MGMT_NO_HDEV BIT(1)
2178 #define HCI_MGMT_UNTRUSTED BIT(2)
2179 #define HCI_MGMT_UNCONFIGURED BIT(3)
2180 #define HCI_MGMT_HDEV_OPTIONAL BIT(4)
2181
2182 struct hci_mgmt_handler {
2183 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
2184 u16 data_len);
2185 size_t data_len;
2186 unsigned long flags;
2187 };
2188
2189 struct hci_mgmt_chan {
2190 struct list_head list;
2191 unsigned short channel;
2192 size_t handler_count;
2193 const struct hci_mgmt_handler *handlers;
2194 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
2195 };
2196
2197 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
2198 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
2199
2200 /* Management interface */
2201 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
2202 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
2203 BIT(BDADDR_LE_RANDOM))
2204 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
2205 BIT(BDADDR_LE_PUBLIC) | \
2206 BIT(BDADDR_LE_RANDOM))
2207
2208 /* These LE scan and inquiry parameters were chosen according to LE General
2209 * Discovery Procedure specification.
2210 */
2211 #define DISCOV_LE_SCAN_WIN 0x12
2212 #define DISCOV_LE_SCAN_INT 0x12
2213 #define DISCOV_LE_TIMEOUT 10240 /* msec */
2214 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
2215 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
2216 #define DISCOV_BREDR_INQUIRY_LEN 0x08
2217 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
2218 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */
2219 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */
2220 #define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */
2221 #define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */
2222 #define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */
2223 #define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */
2224 #define INTERVAL_TO_MS(x) (((x) * 10) / 0x10)
2225
2226 #define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */
2227
2228 void mgmt_fill_version_info(void *ver);
2229 int mgmt_new_settings(struct hci_dev *hdev);
2230 void mgmt_index_added(struct hci_dev *hdev);
2231 void mgmt_index_removed(struct hci_dev *hdev);
2232 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
2233 void mgmt_power_on(struct hci_dev *hdev, int err);
2234 void __mgmt_power_off(struct hci_dev *hdev);
2235 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
2236 bool persistent);
2237 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
2238 u8 *name, u8 name_len);
2239 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
2240 u8 link_type, u8 addr_type, u8 reason,
2241 bool mgmt_connected);
2242 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
2243 u8 link_type, u8 addr_type, u8 status);
2244 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2245 u8 addr_type, u8 status);
2246 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
2247 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2248 u8 status);
2249 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2250 u8 status);
2251 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2252 u8 link_type, u8 addr_type, u32 value,
2253 u8 confirm_hint);
2254 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2255 u8 link_type, u8 addr_type, u8 status);
2256 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2257 u8 link_type, u8 addr_type, u8 status);
2258 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2259 u8 link_type, u8 addr_type);
2260 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2261 u8 link_type, u8 addr_type, u8 status);
2262 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2263 u8 link_type, u8 addr_type, u8 status);
2264 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
2265 u8 link_type, u8 addr_type, u32 passkey,
2266 u8 entered);
2267 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
2268 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
2269 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
2270 u8 status);
2271 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
2272 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
2273 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
2274 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2275 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
2276 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len,
2277 u64 instant);
2278 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2279 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
2280 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
2281 void mgmt_suspending(struct hci_dev *hdev, u8 state);
2282 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
2283 u8 addr_type);
2284 bool mgmt_powering_down(struct hci_dev *hdev);
2285 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
2286 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
2287 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
2288 bool persistent);
2289 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
2290 u8 bdaddr_type, u8 store_hint, u16 min_interval,
2291 u16 max_interval, u16 latency, u16 timeout);
2292 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
2293 bool mgmt_get_connectable(struct hci_dev *hdev);
2294 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
2295 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
2296 u8 instance);
2297 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
2298 u8 instance);
2299 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle);
2300 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
2301 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle,
2302 bdaddr_t *bdaddr, u8 addr_type);
2303
2304 int hci_abort_conn(struct hci_conn *conn, u8 reason);
2305 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
2306 u16 to_multiplier);
2307 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
2308 __u8 ltk[16], __u8 key_size);
2309
2310 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
2311 u8 *bdaddr_type);
2312
2313 #define SCO_AIRMODE_MASK 0x0003
2314 #define SCO_AIRMODE_CVSD 0x0000
2315 #define SCO_AIRMODE_TRANSP 0x0003
2316
2317 #define LOCAL_CODEC_ACL_MASK BIT(0)
2318 #define LOCAL_CODEC_SCO_MASK BIT(1)
2319
2320 #define TRANSPORT_TYPE_MAX 0x04
2321
2322 #endif /* __HCI_CORE_H */
2323