1 /*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
4
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
10
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
23 */
24
25 #ifndef __HCI_CORE_H
26 #define __HCI_CORE_H
27
28 #include <linux/idr.h>
29 #include <linux/leds.h>
30 #include <linux/rculist.h>
31
32 #include <net/bluetooth/hci.h>
33 #include <net/bluetooth/hci_sync.h>
34 #include <net/bluetooth/hci_sock.h>
35
36 /* HCI priority */
37 #define HCI_PRIO_MAX 7
38
39 /* HCI maximum id value */
40 #define HCI_MAX_ID 10000
41
42 /* HCI Core structures */
43 struct inquiry_data {
44 bdaddr_t bdaddr;
45 __u8 pscan_rep_mode;
46 __u8 pscan_period_mode;
47 __u8 pscan_mode;
48 __u8 dev_class[3];
49 __le16 clock_offset;
50 __s8 rssi;
51 __u8 ssp_mode;
52 };
53
54 struct inquiry_entry {
55 struct list_head all; /* inq_cache.all */
56 struct list_head list; /* unknown or resolve */
57 enum {
58 NAME_NOT_KNOWN,
59 NAME_NEEDED,
60 NAME_PENDING,
61 NAME_KNOWN,
62 } name_state;
63 __u32 timestamp;
64 struct inquiry_data data;
65 };
66
67 struct discovery_state {
68 int type;
69 enum {
70 DISCOVERY_STOPPED,
71 DISCOVERY_STARTING,
72 DISCOVERY_FINDING,
73 DISCOVERY_RESOLVING,
74 DISCOVERY_STOPPING,
75 } state;
76 struct list_head all; /* All devices found during inquiry */
77 struct list_head unknown; /* Name state not known */
78 struct list_head resolve; /* Name needs to be resolved */
79 __u32 timestamp;
80 bdaddr_t last_adv_addr;
81 u8 last_adv_addr_type;
82 s8 last_adv_rssi;
83 u32 last_adv_flags;
84 u8 last_adv_data[HCI_MAX_AD_LENGTH];
85 u8 last_adv_data_len;
86 bool report_invalid_rssi;
87 bool result_filtering;
88 bool limited;
89 s8 rssi;
90 u16 uuid_count;
91 u8 (*uuids)[16];
92 unsigned long scan_start;
93 unsigned long scan_duration;
94 unsigned long name_resolve_timeout;
95 };
96
97 #define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
98
99 enum suspend_tasks {
100 SUSPEND_PAUSE_DISCOVERY,
101 SUSPEND_UNPAUSE_DISCOVERY,
102
103 SUSPEND_PAUSE_ADVERTISING,
104 SUSPEND_UNPAUSE_ADVERTISING,
105
106 SUSPEND_SCAN_DISABLE,
107 SUSPEND_SCAN_ENABLE,
108 SUSPEND_DISCONNECTING,
109
110 SUSPEND_POWERING_DOWN,
111
112 SUSPEND_PREPARE_NOTIFIER,
113
114 SUSPEND_SET_ADV_FILTER,
115 __SUSPEND_NUM_TASKS
116 };
117
118 enum suspended_state {
119 BT_RUNNING = 0,
120 BT_SUSPEND_DISCONNECT,
121 BT_SUSPEND_CONFIGURE_WAKE,
122 };
123
124 struct hci_conn_hash {
125 struct list_head list;
126 unsigned int acl_num;
127 unsigned int amp_num;
128 unsigned int sco_num;
129 unsigned int iso_num;
130 unsigned int le_num;
131 unsigned int le_num_peripheral;
132 };
133
134 struct bdaddr_list {
135 struct list_head list;
136 bdaddr_t bdaddr;
137 u8 bdaddr_type;
138 };
139
140 struct codec_list {
141 struct list_head list;
142 u8 id;
143 __u16 cid;
144 __u16 vid;
145 u8 transport;
146 u8 num_caps;
147 u32 len;
148 struct hci_codec_caps caps[];
149 };
150
151 struct bdaddr_list_with_irk {
152 struct list_head list;
153 bdaddr_t bdaddr;
154 u8 bdaddr_type;
155 u8 peer_irk[16];
156 u8 local_irk[16];
157 };
158
159 /* Bitmask of connection flags */
160 enum hci_conn_flags {
161 HCI_CONN_FLAG_REMOTE_WAKEUP = 1,
162 HCI_CONN_FLAG_DEVICE_PRIVACY = 2,
163 };
164 typedef u8 hci_conn_flags_t;
165
166 struct bdaddr_list_with_flags {
167 struct list_head list;
168 bdaddr_t bdaddr;
169 u8 bdaddr_type;
170 hci_conn_flags_t flags;
171 };
172
173 struct bt_uuid {
174 struct list_head list;
175 u8 uuid[16];
176 u8 size;
177 u8 svc_hint;
178 };
179
180 struct blocked_key {
181 struct list_head list;
182 struct rcu_head rcu;
183 u8 type;
184 u8 val[16];
185 };
186
187 struct smp_csrk {
188 bdaddr_t bdaddr;
189 u8 bdaddr_type;
190 u8 type;
191 u8 val[16];
192 };
193
194 struct smp_ltk {
195 struct list_head list;
196 struct rcu_head rcu;
197 bdaddr_t bdaddr;
198 u8 bdaddr_type;
199 u8 authenticated;
200 u8 type;
201 u8 enc_size;
202 __le16 ediv;
203 __le64 rand;
204 u8 val[16];
205 };
206
207 struct smp_irk {
208 struct list_head list;
209 struct rcu_head rcu;
210 bdaddr_t rpa;
211 bdaddr_t bdaddr;
212 u8 addr_type;
213 u8 val[16];
214 };
215
216 struct link_key {
217 struct list_head list;
218 struct rcu_head rcu;
219 bdaddr_t bdaddr;
220 u8 type;
221 u8 val[HCI_LINK_KEY_SIZE];
222 u8 pin_len;
223 };
224
225 struct oob_data {
226 struct list_head list;
227 bdaddr_t bdaddr;
228 u8 bdaddr_type;
229 u8 present;
230 u8 hash192[16];
231 u8 rand192[16];
232 u8 hash256[16];
233 u8 rand256[16];
234 };
235
236 struct adv_info {
237 struct list_head list;
238 bool enabled;
239 bool pending;
240 bool periodic;
241 __u8 mesh;
242 __u8 instance;
243 __u32 flags;
244 __u16 timeout;
245 __u16 remaining_time;
246 __u16 duration;
247 __u16 adv_data_len;
248 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
249 bool adv_data_changed;
250 __u16 scan_rsp_len;
251 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
252 bool scan_rsp_changed;
253 __u16 per_adv_data_len;
254 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
255 __s8 tx_power;
256 __u32 min_interval;
257 __u32 max_interval;
258 bdaddr_t random_addr;
259 bool rpa_expired;
260 struct delayed_work rpa_expired_cb;
261 };
262
263 #define HCI_MAX_ADV_INSTANCES 5
264 #define HCI_DEFAULT_ADV_DURATION 2
265
266 #define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F
267
268 #define DATA_CMP(_d1, _l1, _d2, _l2) \
269 (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2)
270
271 #define ADV_DATA_CMP(_adv, _data, _len) \
272 DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len)
273
274 #define SCAN_RSP_CMP(_adv, _data, _len) \
275 DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len)
276
277 struct monitored_device {
278 struct list_head list;
279
280 bdaddr_t bdaddr;
281 __u8 addr_type;
282 __u16 handle;
283 bool notified;
284 };
285
286 struct adv_pattern {
287 struct list_head list;
288 __u8 ad_type;
289 __u8 offset;
290 __u8 length;
291 __u8 value[HCI_MAX_AD_LENGTH];
292 };
293
294 struct adv_rssi_thresholds {
295 __s8 low_threshold;
296 __s8 high_threshold;
297 __u16 low_threshold_timeout;
298 __u16 high_threshold_timeout;
299 __u8 sampling_period;
300 };
301
302 struct adv_monitor {
303 struct list_head patterns;
304 struct adv_rssi_thresholds rssi;
305 __u16 handle;
306
307 enum {
308 ADV_MONITOR_STATE_NOT_REGISTERED,
309 ADV_MONITOR_STATE_REGISTERED,
310 ADV_MONITOR_STATE_OFFLOADED
311 } state;
312 };
313
314 #define HCI_MIN_ADV_MONITOR_HANDLE 1
315 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32
316 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16
317 #define HCI_ADV_MONITOR_EXT_NONE 1
318 #define HCI_ADV_MONITOR_EXT_MSFT 2
319
320 #define HCI_MAX_SHORT_NAME_LENGTH 10
321
322 #define HCI_CONN_HANDLE_UNSET 0xffff
323 #define HCI_CONN_HANDLE_MAX 0x0eff
324
325 /* Min encryption key size to match with SMP */
326 #define HCI_MIN_ENC_KEY_SIZE 7
327
328 /* Default LE RPA expiry time, 15 minutes */
329 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
330
331 /* Default min/max age of connection information (1s/3s) */
332 #define DEFAULT_CONN_INFO_MIN_AGE 1000
333 #define DEFAULT_CONN_INFO_MAX_AGE 3000
334 /* Default authenticated payload timeout 30s */
335 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8
336
337 struct amp_assoc {
338 __u16 len;
339 __u16 offset;
340 __u16 rem_len;
341 __u16 len_so_far;
342 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
343 };
344
345 #define HCI_MAX_PAGES 3
346
347 struct hci_dev {
348 struct list_head list;
349 struct mutex lock;
350
351 char name[8];
352 unsigned long flags;
353 __u16 id;
354 __u8 bus;
355 __u8 dev_type;
356 bdaddr_t bdaddr;
357 bdaddr_t setup_addr;
358 bdaddr_t public_addr;
359 bdaddr_t random_addr;
360 bdaddr_t static_addr;
361 __u8 adv_addr_type;
362 __u8 dev_name[HCI_MAX_NAME_LENGTH];
363 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
364 __u8 eir[HCI_MAX_EIR_LENGTH];
365 __u16 appearance;
366 __u8 dev_class[3];
367 __u8 major_class;
368 __u8 minor_class;
369 __u8 max_page;
370 __u8 features[HCI_MAX_PAGES][8];
371 __u8 le_features[8];
372 __u8 le_accept_list_size;
373 __u8 le_resolv_list_size;
374 __u8 le_num_of_adv_sets;
375 __u8 le_states[8];
376 __u8 mesh_ad_types[16];
377 __u8 mesh_send_ref;
378 __u8 commands[64];
379 __u8 hci_ver;
380 __u16 hci_rev;
381 __u8 lmp_ver;
382 __u16 manufacturer;
383 __u16 lmp_subver;
384 __u16 voice_setting;
385 __u8 num_iac;
386 __u16 stored_max_keys;
387 __u16 stored_num_keys;
388 __u8 io_capability;
389 __s8 inq_tx_power;
390 __u8 err_data_reporting;
391 __u16 page_scan_interval;
392 __u16 page_scan_window;
393 __u8 page_scan_type;
394 __u8 le_adv_channel_map;
395 __u16 le_adv_min_interval;
396 __u16 le_adv_max_interval;
397 __u8 le_scan_type;
398 __u16 le_scan_interval;
399 __u16 le_scan_window;
400 __u16 le_scan_int_suspend;
401 __u16 le_scan_window_suspend;
402 __u16 le_scan_int_discovery;
403 __u16 le_scan_window_discovery;
404 __u16 le_scan_int_adv_monitor;
405 __u16 le_scan_window_adv_monitor;
406 __u16 le_scan_int_connect;
407 __u16 le_scan_window_connect;
408 __u16 le_conn_min_interval;
409 __u16 le_conn_max_interval;
410 __u16 le_conn_latency;
411 __u16 le_supv_timeout;
412 __u16 le_def_tx_len;
413 __u16 le_def_tx_time;
414 __u16 le_max_tx_len;
415 __u16 le_max_tx_time;
416 __u16 le_max_rx_len;
417 __u16 le_max_rx_time;
418 __u8 le_max_key_size;
419 __u8 le_min_key_size;
420 __u16 discov_interleaved_timeout;
421 __u16 conn_info_min_age;
422 __u16 conn_info_max_age;
423 __u16 auth_payload_timeout;
424 __u8 min_enc_key_size;
425 __u8 max_enc_key_size;
426 __u8 pairing_opts;
427 __u8 ssp_debug_mode;
428 __u8 hw_error_code;
429 __u32 clock;
430 __u16 advmon_allowlist_duration;
431 __u16 advmon_no_filter_duration;
432 __u8 enable_advmon_interleave_scan;
433
434 __u16 devid_source;
435 __u16 devid_vendor;
436 __u16 devid_product;
437 __u16 devid_version;
438
439 __u8 def_page_scan_type;
440 __u16 def_page_scan_int;
441 __u16 def_page_scan_window;
442 __u8 def_inq_scan_type;
443 __u16 def_inq_scan_int;
444 __u16 def_inq_scan_window;
445 __u16 def_br_lsto;
446 __u16 def_page_timeout;
447 __u16 def_multi_adv_rotation_duration;
448 __u16 def_le_autoconnect_timeout;
449 __s8 min_le_tx_power;
450 __s8 max_le_tx_power;
451
452 __u16 pkt_type;
453 __u16 esco_type;
454 __u16 link_policy;
455 __u16 link_mode;
456
457 __u32 idle_timeout;
458 __u16 sniff_min_interval;
459 __u16 sniff_max_interval;
460
461 __u8 amp_status;
462 __u32 amp_total_bw;
463 __u32 amp_max_bw;
464 __u32 amp_min_latency;
465 __u32 amp_max_pdu;
466 __u8 amp_type;
467 __u16 amp_pal_cap;
468 __u16 amp_assoc_size;
469 __u32 amp_max_flush_to;
470 __u32 amp_be_flush_to;
471
472 struct amp_assoc loc_assoc;
473
474 __u8 flow_ctl_mode;
475
476 unsigned int auto_accept_delay;
477
478 unsigned long quirks;
479
480 atomic_t cmd_cnt;
481 unsigned int acl_cnt;
482 unsigned int sco_cnt;
483 unsigned int le_cnt;
484 unsigned int iso_cnt;
485
486 unsigned int acl_mtu;
487 unsigned int sco_mtu;
488 unsigned int le_mtu;
489 unsigned int iso_mtu;
490 unsigned int acl_pkts;
491 unsigned int sco_pkts;
492 unsigned int le_pkts;
493 unsigned int iso_pkts;
494
495 __u16 block_len;
496 __u16 block_mtu;
497 __u16 num_blocks;
498 __u16 block_cnt;
499
500 unsigned long acl_last_tx;
501 unsigned long sco_last_tx;
502 unsigned long le_last_tx;
503
504 __u8 le_tx_def_phys;
505 __u8 le_rx_def_phys;
506
507 struct workqueue_struct *workqueue;
508 struct workqueue_struct *req_workqueue;
509
510 struct work_struct power_on;
511 struct delayed_work power_off;
512 struct work_struct error_reset;
513 struct work_struct cmd_sync_work;
514 struct list_head cmd_sync_work_list;
515 struct mutex cmd_sync_work_lock;
516 struct work_struct cmd_sync_cancel_work;
517 struct work_struct reenable_adv_work;
518
519 __u16 discov_timeout;
520 struct delayed_work discov_off;
521
522 struct delayed_work service_cache;
523
524 struct delayed_work cmd_timer;
525 struct delayed_work ncmd_timer;
526
527 struct work_struct rx_work;
528 struct work_struct cmd_work;
529 struct work_struct tx_work;
530
531 struct delayed_work le_scan_disable;
532 struct delayed_work le_scan_restart;
533
534 struct sk_buff_head rx_q;
535 struct sk_buff_head raw_q;
536 struct sk_buff_head cmd_q;
537
538 struct sk_buff *sent_cmd;
539 struct sk_buff *recv_event;
540
541 struct mutex req_lock;
542 wait_queue_head_t req_wait_q;
543 __u32 req_status;
544 __u32 req_result;
545 struct sk_buff *req_skb;
546
547 void *smp_data;
548 void *smp_bredr_data;
549
550 struct discovery_state discovery;
551
552 int discovery_old_state;
553 bool discovery_paused;
554 int advertising_old_state;
555 bool advertising_paused;
556
557 struct notifier_block suspend_notifier;
558 enum suspended_state suspend_state_next;
559 enum suspended_state suspend_state;
560 bool scanning_paused;
561 bool suspended;
562 u8 wake_reason;
563 bdaddr_t wake_addr;
564 u8 wake_addr_type;
565
566 struct hci_conn_hash conn_hash;
567
568 struct list_head mesh_pending;
569 struct list_head mgmt_pending;
570 struct list_head reject_list;
571 struct list_head accept_list;
572 struct list_head uuids;
573 struct list_head link_keys;
574 struct list_head long_term_keys;
575 struct list_head identity_resolving_keys;
576 struct list_head remote_oob_data;
577 struct list_head le_accept_list;
578 struct list_head le_resolv_list;
579 struct list_head le_conn_params;
580 struct list_head pend_le_conns;
581 struct list_head pend_le_reports;
582 struct list_head blocked_keys;
583 struct list_head local_codecs;
584
585 struct hci_dev_stats stat;
586
587 atomic_t promisc;
588
589 const char *hw_info;
590 const char *fw_info;
591 struct dentry *debugfs;
592
593 struct device dev;
594
595 struct rfkill *rfkill;
596
597 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
598 hci_conn_flags_t conn_flags;
599
600 __s8 adv_tx_power;
601 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
602 __u8 adv_data_len;
603 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
604 __u8 scan_rsp_data_len;
605 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
606 __u8 per_adv_data_len;
607
608 struct list_head adv_instances;
609 unsigned int adv_instance_cnt;
610 __u8 cur_adv_instance;
611 __u16 adv_instance_timeout;
612 struct delayed_work adv_instance_expire;
613
614 struct idr adv_monitors_idr;
615 unsigned int adv_monitors_cnt;
616
617 __u8 irk[16];
618 __u32 rpa_timeout;
619 struct delayed_work rpa_expired;
620 bdaddr_t rpa;
621
622 struct delayed_work mesh_send_done;
623
624 enum {
625 INTERLEAVE_SCAN_NONE,
626 INTERLEAVE_SCAN_NO_FILTER,
627 INTERLEAVE_SCAN_ALLOWLIST
628 } interleave_scan_state;
629
630 struct delayed_work interleave_scan;
631
632 struct list_head monitored_devices;
633 bool advmon_pend_notify;
634
635 #if IS_ENABLED(CONFIG_BT_LEDS)
636 struct led_trigger *power_led;
637 #endif
638
639 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
640 __u16 msft_opcode;
641 void *msft_data;
642 bool msft_curve_validity;
643 #endif
644
645 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
646 bool aosp_capable;
647 bool aosp_quality_report;
648 #endif
649
650 int (*open)(struct hci_dev *hdev);
651 int (*close)(struct hci_dev *hdev);
652 int (*flush)(struct hci_dev *hdev);
653 int (*setup)(struct hci_dev *hdev);
654 int (*shutdown)(struct hci_dev *hdev);
655 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
656 void (*notify)(struct hci_dev *hdev, unsigned int evt);
657 void (*hw_error)(struct hci_dev *hdev, u8 code);
658 int (*post_init)(struct hci_dev *hdev);
659 int (*set_diag)(struct hci_dev *hdev, bool enable);
660 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
661 void (*cmd_timeout)(struct hci_dev *hdev);
662 void (*reset)(struct hci_dev *hdev);
663 bool (*wakeup)(struct hci_dev *hdev);
664 int (*set_quality_report)(struct hci_dev *hdev, bool enable);
665 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path);
666 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type,
667 struct bt_codec *codec, __u8 *vnd_len,
668 __u8 **vnd_data);
669 };
670
671 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
672
673 enum conn_reasons {
674 CONN_REASON_PAIR_DEVICE,
675 CONN_REASON_L2CAP_CHAN,
676 CONN_REASON_SCO_CONNECT,
677 CONN_REASON_ISO_CONNECT,
678 };
679
680 struct hci_conn {
681 struct list_head list;
682
683 atomic_t refcnt;
684
685 bdaddr_t dst;
686 __u8 dst_type;
687 bdaddr_t src;
688 __u8 src_type;
689 bdaddr_t init_addr;
690 __u8 init_addr_type;
691 bdaddr_t resp_addr;
692 __u8 resp_addr_type;
693 __u8 adv_instance;
694 __u16 handle;
695 __u16 sync_handle;
696 __u16 state;
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_AD_LENGTH];
725 __u8 le_adv_data_len;
726 __u8 le_per_adv_data[HCI_MAX_PER_AD_LENGTH];
727 __u8 le_per_adv_data_len;
728 __u8 le_tx_phy;
729 __u8 le_rx_phy;
730 __s8 rssi;
731 __s8 tx_power;
732 __s8 max_tx_power;
733 struct bt_iso_qos iso_qos;
734 unsigned long flags;
735
736 enum conn_reasons conn_reason;
737
738 __u32 clock;
739 __u16 clock_accuracy;
740
741 unsigned long conn_info_timestamp;
742
743 __u8 remote_cap;
744 __u8 remote_auth;
745 __u8 remote_id;
746
747 unsigned int sent;
748
749 struct sk_buff_head data_q;
750 struct list_head chan_list;
751
752 struct delayed_work disc_work;
753 struct delayed_work auto_accept_work;
754 struct delayed_work idle_work;
755 struct delayed_work le_conn_timeout;
756 struct work_struct le_scan_cleanup;
757
758 struct device dev;
759 struct dentry *debugfs;
760
761 struct hci_dev *hdev;
762 void *l2cap_data;
763 void *sco_data;
764 void *iso_data;
765 struct amp_mgr *amp_mgr;
766
767 struct hci_conn *link;
768 struct bt_codec codec;
769
770 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
771 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
772 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
773
774 void (*cleanup)(struct hci_conn *conn);
775 };
776
777 struct hci_chan {
778 struct list_head list;
779 __u16 handle;
780 struct hci_conn *conn;
781 struct sk_buff_head data_q;
782 unsigned int sent;
783 __u8 state;
784 bool amp;
785 };
786
787 struct hci_conn_params {
788 struct list_head list;
789 struct list_head action;
790
791 bdaddr_t addr;
792 u8 addr_type;
793
794 u16 conn_min_interval;
795 u16 conn_max_interval;
796 u16 conn_latency;
797 u16 supervision_timeout;
798
799 enum {
800 HCI_AUTO_CONN_DISABLED,
801 HCI_AUTO_CONN_REPORT,
802 HCI_AUTO_CONN_DIRECT,
803 HCI_AUTO_CONN_ALWAYS,
804 HCI_AUTO_CONN_LINK_LOSS,
805 HCI_AUTO_CONN_EXPLICIT,
806 } auto_connect;
807
808 struct hci_conn *conn;
809 bool explicit_connect;
810 hci_conn_flags_t flags;
811 u8 privacy_mode;
812 };
813
814 extern struct list_head hci_dev_list;
815 extern struct list_head hci_cb_list;
816 extern rwlock_t hci_dev_list_lock;
817 extern struct mutex hci_cb_list_lock;
818
819 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
820 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
821 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
822 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
823 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
824 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
825 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
826
827 #define hci_dev_clear_volatile_flags(hdev) \
828 do { \
829 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
830 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
831 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
832 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
833 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \
834 } while (0)
835
836 #define hci_dev_le_state_simultaneous(hdev) \
837 (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \
838 (hdev->le_states[4] & 0x08) && /* Central */ \
839 (hdev->le_states[4] & 0x40) && /* Peripheral */ \
840 (hdev->le_states[3] & 0x10)) /* Simultaneous */
841
842 /* ----- HCI interface to upper protocols ----- */
843 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
844 int l2cap_disconn_ind(struct hci_conn *hcon);
845 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
846
847 #if IS_ENABLED(CONFIG_BT_BREDR)
848 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
849 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
850 #else
sco_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 * flags)851 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
852 __u8 *flags)
853 {
854 return 0;
855 }
856
sco_recv_scodata(struct hci_conn * hcon,struct sk_buff * skb)857 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
858 {
859 }
860 #endif
861
862 #if IS_ENABLED(CONFIG_BT_LE)
863 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
864 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
865 #else
iso_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 * flags)866 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
867 __u8 *flags)
868 {
869 return 0;
870 }
iso_recv(struct hci_conn * hcon,struct sk_buff * skb,u16 flags)871 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb,
872 u16 flags)
873 {
874 }
875 #endif
876
877 /* ----- Inquiry cache ----- */
878 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
879 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
880
discovery_init(struct hci_dev * hdev)881 static inline void discovery_init(struct hci_dev *hdev)
882 {
883 hdev->discovery.state = DISCOVERY_STOPPED;
884 INIT_LIST_HEAD(&hdev->discovery.all);
885 INIT_LIST_HEAD(&hdev->discovery.unknown);
886 INIT_LIST_HEAD(&hdev->discovery.resolve);
887 hdev->discovery.report_invalid_rssi = true;
888 hdev->discovery.rssi = HCI_RSSI_INVALID;
889 }
890
hci_discovery_filter_clear(struct hci_dev * hdev)891 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
892 {
893 hdev->discovery.result_filtering = false;
894 hdev->discovery.report_invalid_rssi = true;
895 hdev->discovery.rssi = HCI_RSSI_INVALID;
896 hdev->discovery.uuid_count = 0;
897 kfree(hdev->discovery.uuids);
898 hdev->discovery.uuids = NULL;
899 hdev->discovery.scan_start = 0;
900 hdev->discovery.scan_duration = 0;
901 }
902
903 bool hci_discovery_active(struct hci_dev *hdev);
904
905 void hci_discovery_set_state(struct hci_dev *hdev, int state);
906
inquiry_cache_empty(struct hci_dev * hdev)907 static inline int inquiry_cache_empty(struct hci_dev *hdev)
908 {
909 return list_empty(&hdev->discovery.all);
910 }
911
inquiry_cache_age(struct hci_dev * hdev)912 static inline long inquiry_cache_age(struct hci_dev *hdev)
913 {
914 struct discovery_state *c = &hdev->discovery;
915 return jiffies - c->timestamp;
916 }
917
inquiry_entry_age(struct inquiry_entry * e)918 static inline long inquiry_entry_age(struct inquiry_entry *e)
919 {
920 return jiffies - e->timestamp;
921 }
922
923 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
924 bdaddr_t *bdaddr);
925 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
926 bdaddr_t *bdaddr);
927 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
928 bdaddr_t *bdaddr,
929 int state);
930 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
931 struct inquiry_entry *ie);
932 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
933 bool name_known);
934 void hci_inquiry_cache_flush(struct hci_dev *hdev);
935
936 /* ----- HCI Connections ----- */
937 enum {
938 HCI_CONN_AUTH_PEND,
939 HCI_CONN_REAUTH_PEND,
940 HCI_CONN_ENCRYPT_PEND,
941 HCI_CONN_RSWITCH_PEND,
942 HCI_CONN_MODE_CHANGE_PEND,
943 HCI_CONN_SCO_SETUP_PEND,
944 HCI_CONN_MGMT_CONNECTED,
945 HCI_CONN_SSP_ENABLED,
946 HCI_CONN_SC_ENABLED,
947 HCI_CONN_AES_CCM,
948 HCI_CONN_POWER_SAVE,
949 HCI_CONN_FLUSH_KEY,
950 HCI_CONN_ENCRYPT,
951 HCI_CONN_AUTH,
952 HCI_CONN_SECURE,
953 HCI_CONN_FIPS,
954 HCI_CONN_STK_ENCRYPT,
955 HCI_CONN_AUTH_INITIATOR,
956 HCI_CONN_DROP,
957 HCI_CONN_PARAM_REMOVAL_PEND,
958 HCI_CONN_NEW_LINK_KEY,
959 HCI_CONN_SCANNING,
960 HCI_CONN_AUTH_FAILURE,
961 HCI_CONN_PER_ADV,
962 };
963
hci_conn_ssp_enabled(struct hci_conn * conn)964 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
965 {
966 struct hci_dev *hdev = conn->hdev;
967 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
968 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
969 }
970
hci_conn_sc_enabled(struct hci_conn * conn)971 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
972 {
973 struct hci_dev *hdev = conn->hdev;
974 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
975 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
976 }
977
hci_conn_hash_add(struct hci_dev * hdev,struct hci_conn * c)978 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
979 {
980 struct hci_conn_hash *h = &hdev->conn_hash;
981 list_add_rcu(&c->list, &h->list);
982 switch (c->type) {
983 case ACL_LINK:
984 h->acl_num++;
985 break;
986 case AMP_LINK:
987 h->amp_num++;
988 break;
989 case LE_LINK:
990 h->le_num++;
991 if (c->role == HCI_ROLE_SLAVE)
992 h->le_num_peripheral++;
993 break;
994 case SCO_LINK:
995 case ESCO_LINK:
996 h->sco_num++;
997 break;
998 case ISO_LINK:
999 h->iso_num++;
1000 break;
1001 }
1002 }
1003
hci_conn_hash_del(struct hci_dev * hdev,struct hci_conn * c)1004 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
1005 {
1006 struct hci_conn_hash *h = &hdev->conn_hash;
1007
1008 list_del_rcu(&c->list);
1009 synchronize_rcu();
1010
1011 switch (c->type) {
1012 case ACL_LINK:
1013 h->acl_num--;
1014 break;
1015 case AMP_LINK:
1016 h->amp_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 ISO_LINK:
1028 h->iso_num--;
1029 break;
1030 }
1031 }
1032
hci_conn_num(struct hci_dev * hdev,__u8 type)1033 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
1034 {
1035 struct hci_conn_hash *h = &hdev->conn_hash;
1036 switch (type) {
1037 case ACL_LINK:
1038 return h->acl_num;
1039 case AMP_LINK:
1040 return h->amp_num;
1041 case LE_LINK:
1042 return h->le_num;
1043 case SCO_LINK:
1044 case ESCO_LINK:
1045 return h->sco_num;
1046 case ISO_LINK:
1047 return h->iso_num;
1048 default:
1049 return 0;
1050 }
1051 }
1052
hci_conn_count(struct hci_dev * hdev)1053 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
1054 {
1055 struct hci_conn_hash *c = &hdev->conn_hash;
1056
1057 return c->acl_num + c->amp_num + c->sco_num + c->le_num + c->iso_num;
1058 }
1059
hci_conn_lookup_type(struct hci_dev * hdev,__u16 handle)1060 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
1061 {
1062 struct hci_conn_hash *h = &hdev->conn_hash;
1063 struct hci_conn *c;
1064 __u8 type = INVALID_LINK;
1065
1066 rcu_read_lock();
1067
1068 list_for_each_entry_rcu(c, &h->list, list) {
1069 if (c->handle == handle) {
1070 type = c->type;
1071 break;
1072 }
1073 }
1074
1075 rcu_read_unlock();
1076
1077 return type;
1078 }
1079
hci_conn_hash_lookup_bis(struct hci_dev * hdev,bdaddr_t * ba,__u8 big,__u8 bis)1080 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev,
1081 bdaddr_t *ba,
1082 __u8 big, __u8 bis)
1083 {
1084 struct hci_conn_hash *h = &hdev->conn_hash;
1085 struct hci_conn *c;
1086
1087 rcu_read_lock();
1088
1089 list_for_each_entry_rcu(c, &h->list, list) {
1090 if (bacmp(&c->dst, ba) || c->type != ISO_LINK)
1091 continue;
1092
1093 if (c->iso_qos.big == big && c->iso_qos.bis == bis) {
1094 rcu_read_unlock();
1095 return c;
1096 }
1097 }
1098 rcu_read_unlock();
1099
1100 return NULL;
1101 }
1102
hci_conn_hash_lookup_handle(struct hci_dev * hdev,__u16 handle)1103 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
1104 __u16 handle)
1105 {
1106 struct hci_conn_hash *h = &hdev->conn_hash;
1107 struct hci_conn *c;
1108
1109 rcu_read_lock();
1110
1111 list_for_each_entry_rcu(c, &h->list, list) {
1112 if (c->handle == handle) {
1113 rcu_read_unlock();
1114 return c;
1115 }
1116 }
1117 rcu_read_unlock();
1118
1119 return NULL;
1120 }
1121
hci_conn_hash_lookup_ba(struct hci_dev * hdev,__u8 type,bdaddr_t * ba)1122 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
1123 __u8 type, bdaddr_t *ba)
1124 {
1125 struct hci_conn_hash *h = &hdev->conn_hash;
1126 struct hci_conn *c;
1127
1128 rcu_read_lock();
1129
1130 list_for_each_entry_rcu(c, &h->list, list) {
1131 if (c->type == type && !bacmp(&c->dst, ba)) {
1132 rcu_read_unlock();
1133 return c;
1134 }
1135 }
1136
1137 rcu_read_unlock();
1138
1139 return NULL;
1140 }
1141
hci_conn_hash_lookup_le(struct hci_dev * hdev,bdaddr_t * ba,__u8 ba_type)1142 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
1143 bdaddr_t *ba,
1144 __u8 ba_type)
1145 {
1146 struct hci_conn_hash *h = &hdev->conn_hash;
1147 struct hci_conn *c;
1148
1149 rcu_read_lock();
1150
1151 list_for_each_entry_rcu(c, &h->list, list) {
1152 if (c->type != LE_LINK)
1153 continue;
1154
1155 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1156 rcu_read_unlock();
1157 return c;
1158 }
1159 }
1160
1161 rcu_read_unlock();
1162
1163 return NULL;
1164 }
1165
hci_conn_hash_lookup_cis(struct hci_dev * hdev,bdaddr_t * ba,__u8 ba_type)1166 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev,
1167 bdaddr_t *ba,
1168 __u8 ba_type)
1169 {
1170 struct hci_conn_hash *h = &hdev->conn_hash;
1171 struct hci_conn *c;
1172
1173 rcu_read_lock();
1174
1175 list_for_each_entry_rcu(c, &h->list, list) {
1176 if (c->type != ISO_LINK)
1177 continue;
1178
1179 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1180 rcu_read_unlock();
1181 return c;
1182 }
1183 }
1184
1185 rcu_read_unlock();
1186
1187 return NULL;
1188 }
1189
hci_conn_hash_lookup_cig(struct hci_dev * hdev,__u8 handle)1190 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev,
1191 __u8 handle)
1192 {
1193 struct hci_conn_hash *h = &hdev->conn_hash;
1194 struct hci_conn *c;
1195
1196 rcu_read_lock();
1197
1198 list_for_each_entry_rcu(c, &h->list, list) {
1199 if (c->type != ISO_LINK)
1200 continue;
1201
1202 if (handle == c->iso_qos.cig) {
1203 rcu_read_unlock();
1204 return c;
1205 }
1206 }
1207
1208 rcu_read_unlock();
1209
1210 return NULL;
1211 }
1212
hci_conn_hash_lookup_big(struct hci_dev * hdev,__u8 handle)1213 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev,
1214 __u8 handle)
1215 {
1216 struct hci_conn_hash *h = &hdev->conn_hash;
1217 struct hci_conn *c;
1218
1219 rcu_read_lock();
1220
1221 list_for_each_entry_rcu(c, &h->list, list) {
1222 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK)
1223 continue;
1224
1225 if (handle == c->iso_qos.big) {
1226 rcu_read_unlock();
1227 return c;
1228 }
1229 }
1230
1231 rcu_read_unlock();
1232
1233 return NULL;
1234 }
1235
hci_conn_hash_lookup_state(struct hci_dev * hdev,__u8 type,__u16 state)1236 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1237 __u8 type, __u16 state)
1238 {
1239 struct hci_conn_hash *h = &hdev->conn_hash;
1240 struct hci_conn *c;
1241
1242 rcu_read_lock();
1243
1244 list_for_each_entry_rcu(c, &h->list, list) {
1245 if (c->type == type && c->state == state) {
1246 rcu_read_unlock();
1247 return c;
1248 }
1249 }
1250
1251 rcu_read_unlock();
1252
1253 return NULL;
1254 }
1255
1256 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)1257 static inline void hci_conn_hash_list_state(struct hci_dev *hdev,
1258 hci_conn_func_t func, __u8 type,
1259 __u16 state, void *data)
1260 {
1261 struct hci_conn_hash *h = &hdev->conn_hash;
1262 struct hci_conn *c;
1263
1264 if (!func)
1265 return;
1266
1267 rcu_read_lock();
1268
1269 list_for_each_entry_rcu(c, &h->list, list) {
1270 if (c->type == type && c->state == state)
1271 func(c, data);
1272 }
1273
1274 rcu_read_unlock();
1275 }
1276
hci_lookup_le_connect(struct hci_dev * hdev)1277 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1278 {
1279 struct hci_conn_hash *h = &hdev->conn_hash;
1280 struct hci_conn *c;
1281
1282 rcu_read_lock();
1283
1284 list_for_each_entry_rcu(c, &h->list, list) {
1285 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1286 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1287 rcu_read_unlock();
1288 return c;
1289 }
1290 }
1291
1292 rcu_read_unlock();
1293
1294 return NULL;
1295 }
1296
1297 int hci_disconnect(struct hci_conn *conn, __u8 reason);
1298 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1299 void hci_sco_setup(struct hci_conn *conn, __u8 status);
1300 bool hci_iso_setup_path(struct hci_conn *conn);
1301 int hci_le_create_cis(struct hci_conn *conn);
1302
1303 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1304 u8 role);
1305 int hci_conn_del(struct hci_conn *conn);
1306 void hci_conn_hash_flush(struct hci_dev *hdev);
1307 void hci_conn_check_pending(struct hci_dev *hdev);
1308
1309 struct hci_chan *hci_chan_create(struct hci_conn *conn);
1310 void hci_chan_del(struct hci_chan *chan);
1311 void hci_chan_list_flush(struct hci_conn *conn);
1312 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1313
1314 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1315 u8 dst_type, u8 sec_level,
1316 u16 conn_timeout,
1317 enum conn_reasons conn_reason);
1318 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1319 u8 dst_type, bool dst_resolved, u8 sec_level,
1320 u16 conn_timeout, u8 role);
1321 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1322 u8 sec_level, u8 auth_type,
1323 enum conn_reasons conn_reason);
1324 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1325 __u16 setting, struct bt_codec *codec);
1326 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
1327 __u8 dst_type, struct bt_iso_qos *qos);
1328 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
1329 __u8 dst_type, struct bt_iso_qos *qos);
1330 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
1331 __u8 dst_type, struct bt_iso_qos *qos,
1332 __u8 data_len, __u8 *data);
1333 int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type,
1334 __u8 sid);
1335 int hci_le_big_create_sync(struct hci_dev *hdev, struct bt_iso_qos *qos,
1336 __u16 sync_handle, __u8 num_bis, __u8 bis[]);
1337 int hci_conn_check_link_mode(struct hci_conn *conn);
1338 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1339 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1340 bool initiator);
1341 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1342
1343 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1344
1345 void hci_conn_failed(struct hci_conn *conn, u8 status);
1346
1347 /*
1348 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1349 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1350 * working or anything else. They just guarantee that the object is available
1351 * and can be dereferenced. So you can use its locks, local variables and any
1352 * other constant data.
1353 * Before accessing runtime data, you _must_ lock the object and then check that
1354 * it is still running. As soon as you release the locks, the connection might
1355 * get dropped, though.
1356 *
1357 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1358 * how long the underlying connection is held. So every channel that runs on the
1359 * hci_conn object calls this to prevent the connection from disappearing. As
1360 * long as you hold a device, you must also guarantee that you have a valid
1361 * reference to the device via hci_conn_get() (or the initial reference from
1362 * hci_conn_add()).
1363 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1364 * break because nobody cares for that. But this means, we cannot use
1365 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1366 */
1367
hci_conn_get(struct hci_conn * conn)1368 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1369 {
1370 get_device(&conn->dev);
1371 return conn;
1372 }
1373
hci_conn_put(struct hci_conn * conn)1374 static inline void hci_conn_put(struct hci_conn *conn)
1375 {
1376 put_device(&conn->dev);
1377 }
1378
hci_conn_hold(struct hci_conn * conn)1379 static inline void hci_conn_hold(struct hci_conn *conn)
1380 {
1381 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1382
1383 atomic_inc(&conn->refcnt);
1384 cancel_delayed_work(&conn->disc_work);
1385 }
1386
hci_conn_drop(struct hci_conn * conn)1387 static inline void hci_conn_drop(struct hci_conn *conn)
1388 {
1389 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1390
1391 if (atomic_dec_and_test(&conn->refcnt)) {
1392 unsigned long timeo;
1393
1394 switch (conn->type) {
1395 case ACL_LINK:
1396 case LE_LINK:
1397 cancel_delayed_work(&conn->idle_work);
1398 if (conn->state == BT_CONNECTED) {
1399 timeo = conn->disc_timeout;
1400 if (!conn->out)
1401 timeo *= 2;
1402 } else {
1403 timeo = 0;
1404 }
1405 break;
1406
1407 case AMP_LINK:
1408 timeo = conn->disc_timeout;
1409 break;
1410
1411 default:
1412 timeo = 0;
1413 break;
1414 }
1415
1416 cancel_delayed_work(&conn->disc_work);
1417 queue_delayed_work(conn->hdev->workqueue,
1418 &conn->disc_work, timeo);
1419 }
1420 }
1421
1422 /* ----- HCI Devices ----- */
hci_dev_put(struct hci_dev * d)1423 static inline void hci_dev_put(struct hci_dev *d)
1424 {
1425 BT_DBG("%s orig refcnt %d", d->name,
1426 kref_read(&d->dev.kobj.kref));
1427
1428 put_device(&d->dev);
1429 }
1430
hci_dev_hold(struct hci_dev * d)1431 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1432 {
1433 BT_DBG("%s orig refcnt %d", d->name,
1434 kref_read(&d->dev.kobj.kref));
1435
1436 get_device(&d->dev);
1437 return d;
1438 }
1439
1440 #define hci_dev_lock(d) mutex_lock(&d->lock)
1441 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
1442
1443 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1444 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1445
hci_get_drvdata(struct hci_dev * hdev)1446 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1447 {
1448 return dev_get_drvdata(&hdev->dev);
1449 }
1450
hci_set_drvdata(struct hci_dev * hdev,void * data)1451 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1452 {
1453 dev_set_drvdata(&hdev->dev, data);
1454 }
1455
hci_get_priv(struct hci_dev * hdev)1456 static inline void *hci_get_priv(struct hci_dev *hdev)
1457 {
1458 return (char *)hdev + sizeof(*hdev);
1459 }
1460
1461 struct hci_dev *hci_dev_get(int index);
1462 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1463
1464 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);
1465
hci_alloc_dev(void)1466 static inline struct hci_dev *hci_alloc_dev(void)
1467 {
1468 return hci_alloc_dev_priv(0);
1469 }
1470
1471 void hci_free_dev(struct hci_dev *hdev);
1472 int hci_register_dev(struct hci_dev *hdev);
1473 void hci_unregister_dev(struct hci_dev *hdev);
1474 void hci_release_dev(struct hci_dev *hdev);
1475 int hci_register_suspend_notifier(struct hci_dev *hdev);
1476 int hci_unregister_suspend_notifier(struct hci_dev *hdev);
1477 int hci_suspend_dev(struct hci_dev *hdev);
1478 int hci_resume_dev(struct hci_dev *hdev);
1479 int hci_reset_dev(struct hci_dev *hdev);
1480 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1481 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1482 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1483 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1484
hci_set_msft_opcode(struct hci_dev * hdev,__u16 opcode)1485 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1486 {
1487 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
1488 hdev->msft_opcode = opcode;
1489 #endif
1490 }
1491
hci_set_aosp_capable(struct hci_dev * hdev)1492 static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1493 {
1494 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
1495 hdev->aosp_capable = true;
1496 #endif
1497 }
1498
1499 int hci_dev_open(__u16 dev);
1500 int hci_dev_close(__u16 dev);
1501 int hci_dev_do_close(struct hci_dev *hdev);
1502 int hci_dev_reset(__u16 dev);
1503 int hci_dev_reset_stat(__u16 dev);
1504 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1505 int hci_get_dev_list(void __user *arg);
1506 int hci_get_dev_info(void __user *arg);
1507 int hci_get_conn_list(void __user *arg);
1508 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1509 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1510 int hci_inquiry(void __user *arg);
1511
1512 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1513 bdaddr_t *bdaddr, u8 type);
1514 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1515 struct list_head *list, bdaddr_t *bdaddr,
1516 u8 type);
1517 struct bdaddr_list_with_flags *
1518 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1519 u8 type);
1520 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1521 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1522 u8 type, u8 *peer_irk, u8 *local_irk);
1523 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1524 u8 type, u32 flags);
1525 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1526 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1527 u8 type);
1528 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1529 u8 type);
1530 void hci_bdaddr_list_clear(struct list_head *list);
1531
1532 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1533 bdaddr_t *addr, u8 addr_type);
1534 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1535 bdaddr_t *addr, u8 addr_type);
1536 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1537 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1538
1539 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1540 bdaddr_t *addr,
1541 u8 addr_type);
1542
1543 void hci_uuids_clear(struct hci_dev *hdev);
1544
1545 void hci_link_keys_clear(struct hci_dev *hdev);
1546 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1547 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1548 bdaddr_t *bdaddr, u8 *val, u8 type,
1549 u8 pin_len, bool *persistent);
1550 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1551 u8 addr_type, u8 type, u8 authenticated,
1552 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1553 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1554 u8 addr_type, u8 role);
1555 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1556 void hci_smp_ltks_clear(struct hci_dev *hdev);
1557 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1558
1559 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1560 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1561 u8 addr_type);
1562 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1563 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1564 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1565 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1566 void hci_blocked_keys_clear(struct hci_dev *hdev);
1567 void hci_smp_irks_clear(struct hci_dev *hdev);
1568
1569 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1570
1571 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1572 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1573 bdaddr_t *bdaddr, u8 bdaddr_type);
1574 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1575 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1576 u8 *hash256, u8 *rand256);
1577 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1578 u8 bdaddr_type);
1579
1580 void hci_adv_instances_clear(struct hci_dev *hdev);
1581 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1582 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1583 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance,
1584 u32 flags, u16 adv_data_len, u8 *adv_data,
1585 u16 scan_rsp_len, u8 *scan_rsp_data,
1586 u16 timeout, u16 duration, s8 tx_power,
1587 u32 min_interval, u32 max_interval,
1588 u8 mesh_handle);
1589 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance,
1590 u32 flags, u8 data_len, u8 *data,
1591 u32 min_interval, u32 max_interval);
1592 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1593 u16 adv_data_len, u8 *adv_data,
1594 u16 scan_rsp_len, u8 *scan_rsp_data);
1595 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1596 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1597 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance);
1598 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance);
1599
1600 void hci_adv_monitors_clear(struct hci_dev *hdev);
1601 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1602 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1603 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle);
1604 int hci_remove_all_adv_monitor(struct hci_dev *hdev);
1605 bool hci_is_adv_monitoring(struct hci_dev *hdev);
1606 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1607
1608 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1609
1610 void hci_init_sysfs(struct hci_dev *hdev);
1611 void hci_conn_init_sysfs(struct hci_conn *conn);
1612 void hci_conn_add_sysfs(struct hci_conn *conn);
1613 void hci_conn_del_sysfs(struct hci_conn *conn);
1614
1615 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1616
1617 /* ----- LMP capabilities ----- */
1618 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1619 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1620 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1621 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1622 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1623 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1624 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1625 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1626 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1627 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1628 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1629 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1630 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1631 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1632 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1633 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1634 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1635 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1636 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1637 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1638 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1639 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1640 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1641 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1642
1643 /* ----- Extended LMP capabilities ----- */
1644 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1645 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1646 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1647 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1648 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1649 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1650
1651 /* ----- Host capabilities ----- */
1652 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1653 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1654 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1655 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1656
1657 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1658 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1659 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1660 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1661 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \
1662 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED))
1663 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \
1664 !adv->rpa_expired)
1665
1666 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1667 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1668
1669 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1670 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1671
1672 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1673 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1674
1675 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1676
1677 /* Use LL Privacy based address resolution if supported */
1678 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \
1679 hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY))
1680
1681 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \
1682 (hdev->commands[39] & 0x04))
1683
1684 /* Use enhanced synchronous connection if command is supported and its quirk
1685 * has not been set.
1686 */
1687 #define enhanced_sync_conn_capable(dev) \
1688 (((dev)->commands[29] & 0x08) && \
1689 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks))
1690
1691 /* Use ext scanning if set ext scan param and ext scan enable is supported */
1692 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1693 ((dev)->commands[37] & 0x40) && \
1694 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks))
1695
1696 /* Use ext create connection if command is supported */
1697 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1698
1699 /* Extended advertising support */
1700 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1701
1702 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789:
1703 *
1704 * C24: Mandatory if the LE Controller supports Connection State and either
1705 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported
1706 */
1707 #define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \
1708 ext_adv_capable(dev))
1709
1710 /* Periodic advertising support */
1711 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV))
1712
1713 /* CIS Master/Slave and BIS support */
1714 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev))
1715 #define cis_capable(dev) \
1716 (cis_central_capable(dev) || cis_peripheral_capable(dev))
1717 #define cis_central_capable(dev) \
1718 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL)
1719 #define cis_peripheral_capable(dev) \
1720 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL)
1721 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER)
1722
1723 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \
1724 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks)))
1725
1726 /* ----- HCI protocols ----- */
1727 #define HCI_PROTO_DEFER 0x01
1728
hci_proto_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 type,__u8 * flags)1729 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1730 __u8 type, __u8 *flags)
1731 {
1732 switch (type) {
1733 case ACL_LINK:
1734 return l2cap_connect_ind(hdev, bdaddr);
1735
1736 case SCO_LINK:
1737 case ESCO_LINK:
1738 return sco_connect_ind(hdev, bdaddr, flags);
1739
1740 case ISO_LINK:
1741 return iso_connect_ind(hdev, bdaddr, flags);
1742
1743 default:
1744 BT_ERR("unknown link type %d", type);
1745 return -EINVAL;
1746 }
1747 }
1748
hci_proto_disconn_ind(struct hci_conn * conn)1749 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1750 {
1751 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1752 return HCI_ERROR_REMOTE_USER_TERM;
1753
1754 return l2cap_disconn_ind(conn);
1755 }
1756
1757 /* ----- HCI callbacks ----- */
1758 struct hci_cb {
1759 struct list_head list;
1760
1761 char *name;
1762
1763 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1764 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1765 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1766 __u8 encrypt);
1767 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1768 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1769 };
1770
hci_connect_cfm(struct hci_conn * conn,__u8 status)1771 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1772 {
1773 struct hci_cb *cb;
1774
1775 mutex_lock(&hci_cb_list_lock);
1776 list_for_each_entry(cb, &hci_cb_list, list) {
1777 if (cb->connect_cfm)
1778 cb->connect_cfm(conn, status);
1779 }
1780 mutex_unlock(&hci_cb_list_lock);
1781
1782 if (conn->connect_cfm_cb)
1783 conn->connect_cfm_cb(conn, status);
1784 }
1785
hci_disconn_cfm(struct hci_conn * conn,__u8 reason)1786 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1787 {
1788 struct hci_cb *cb;
1789
1790 mutex_lock(&hci_cb_list_lock);
1791 list_for_each_entry(cb, &hci_cb_list, list) {
1792 if (cb->disconn_cfm)
1793 cb->disconn_cfm(conn, reason);
1794 }
1795 mutex_unlock(&hci_cb_list_lock);
1796
1797 if (conn->disconn_cfm_cb)
1798 conn->disconn_cfm_cb(conn, reason);
1799 }
1800
hci_auth_cfm(struct hci_conn * conn,__u8 status)1801 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1802 {
1803 struct hci_cb *cb;
1804 __u8 encrypt;
1805
1806 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1807 return;
1808
1809 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1810
1811 mutex_lock(&hci_cb_list_lock);
1812 list_for_each_entry(cb, &hci_cb_list, list) {
1813 if (cb->security_cfm)
1814 cb->security_cfm(conn, status, encrypt);
1815 }
1816 mutex_unlock(&hci_cb_list_lock);
1817
1818 if (conn->security_cfm_cb)
1819 conn->security_cfm_cb(conn, status);
1820 }
1821
hci_encrypt_cfm(struct hci_conn * conn,__u8 status)1822 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
1823 {
1824 struct hci_cb *cb;
1825 __u8 encrypt;
1826
1827 if (conn->state == BT_CONFIG) {
1828 if (!status)
1829 conn->state = BT_CONNECTED;
1830
1831 hci_connect_cfm(conn, status);
1832 hci_conn_drop(conn);
1833 return;
1834 }
1835
1836 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
1837 encrypt = 0x00;
1838 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
1839 encrypt = 0x02;
1840 else
1841 encrypt = 0x01;
1842
1843 if (!status) {
1844 if (conn->sec_level == BT_SECURITY_SDP)
1845 conn->sec_level = BT_SECURITY_LOW;
1846
1847 if (conn->pending_sec_level > conn->sec_level)
1848 conn->sec_level = conn->pending_sec_level;
1849 }
1850
1851 mutex_lock(&hci_cb_list_lock);
1852 list_for_each_entry(cb, &hci_cb_list, list) {
1853 if (cb->security_cfm)
1854 cb->security_cfm(conn, status, encrypt);
1855 }
1856 mutex_unlock(&hci_cb_list_lock);
1857
1858 if (conn->security_cfm_cb)
1859 conn->security_cfm_cb(conn, status);
1860 }
1861
hci_key_change_cfm(struct hci_conn * conn,__u8 status)1862 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1863 {
1864 struct hci_cb *cb;
1865
1866 mutex_lock(&hci_cb_list_lock);
1867 list_for_each_entry(cb, &hci_cb_list, list) {
1868 if (cb->key_change_cfm)
1869 cb->key_change_cfm(conn, status);
1870 }
1871 mutex_unlock(&hci_cb_list_lock);
1872 }
1873
hci_role_switch_cfm(struct hci_conn * conn,__u8 status,__u8 role)1874 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1875 __u8 role)
1876 {
1877 struct hci_cb *cb;
1878
1879 mutex_lock(&hci_cb_list_lock);
1880 list_for_each_entry(cb, &hci_cb_list, list) {
1881 if (cb->role_switch_cfm)
1882 cb->role_switch_cfm(conn, status, role);
1883 }
1884 mutex_unlock(&hci_cb_list_lock);
1885 }
1886
hci_bdaddr_is_rpa(bdaddr_t * bdaddr,u8 addr_type)1887 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1888 {
1889 if (addr_type != ADDR_LE_DEV_RANDOM)
1890 return false;
1891
1892 if ((bdaddr->b[5] & 0xc0) == 0x40)
1893 return true;
1894
1895 return false;
1896 }
1897
hci_is_identity_address(bdaddr_t * addr,u8 addr_type)1898 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1899 {
1900 if (addr_type == ADDR_LE_DEV_PUBLIC)
1901 return true;
1902
1903 /* Check for Random Static address type */
1904 if ((addr->b[5] & 0xc0) == 0xc0)
1905 return true;
1906
1907 return false;
1908 }
1909
hci_get_irk(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 addr_type)1910 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1911 bdaddr_t *bdaddr, u8 addr_type)
1912 {
1913 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1914 return NULL;
1915
1916 return hci_find_irk_by_rpa(hdev, bdaddr);
1917 }
1918
hci_check_conn_params(u16 min,u16 max,u16 latency,u16 to_multiplier)1919 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1920 u16 to_multiplier)
1921 {
1922 u16 max_latency;
1923
1924 if (min > max || min < 6 || max > 3200)
1925 return -EINVAL;
1926
1927 if (to_multiplier < 10 || to_multiplier > 3200)
1928 return -EINVAL;
1929
1930 if (max >= to_multiplier * 8)
1931 return -EINVAL;
1932
1933 max_latency = (to_multiplier * 4 / max) - 1;
1934 if (latency > 499 || latency > max_latency)
1935 return -EINVAL;
1936
1937 return 0;
1938 }
1939
1940 int hci_register_cb(struct hci_cb *hcb);
1941 int hci_unregister_cb(struct hci_cb *hcb);
1942
1943 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
1944 const void *param);
1945
1946 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1947 const void *param);
1948 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1949 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1950 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb);
1951
1952 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1953 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event);
1954
1955 u32 hci_conn_get_phy(struct hci_conn *conn);
1956
1957 /* ----- HCI Sockets ----- */
1958 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1959 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1960 int flag, struct sock *skip_sk);
1961 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1962 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1963 void *data, u16 data_len, ktime_t tstamp,
1964 int flag, struct sock *skip_sk);
1965
1966 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1967
1968 #define HCI_MGMT_VAR_LEN BIT(0)
1969 #define HCI_MGMT_NO_HDEV BIT(1)
1970 #define HCI_MGMT_UNTRUSTED BIT(2)
1971 #define HCI_MGMT_UNCONFIGURED BIT(3)
1972 #define HCI_MGMT_HDEV_OPTIONAL BIT(4)
1973
1974 struct hci_mgmt_handler {
1975 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1976 u16 data_len);
1977 size_t data_len;
1978 unsigned long flags;
1979 };
1980
1981 struct hci_mgmt_chan {
1982 struct list_head list;
1983 unsigned short channel;
1984 size_t handler_count;
1985 const struct hci_mgmt_handler *handlers;
1986 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1987 };
1988
1989 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1990 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1991
1992 /* Management interface */
1993 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1994 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1995 BIT(BDADDR_LE_RANDOM))
1996 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1997 BIT(BDADDR_LE_PUBLIC) | \
1998 BIT(BDADDR_LE_RANDOM))
1999
2000 /* These LE scan and inquiry parameters were chosen according to LE General
2001 * Discovery Procedure specification.
2002 */
2003 #define DISCOV_LE_SCAN_WIN 0x12
2004 #define DISCOV_LE_SCAN_INT 0x12
2005 #define DISCOV_LE_TIMEOUT 10240 /* msec */
2006 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
2007 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
2008 #define DISCOV_BREDR_INQUIRY_LEN 0x08
2009 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
2010 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */
2011 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */
2012 #define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */
2013 #define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */
2014 #define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */
2015 #define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */
2016 #define INTERVAL_TO_MS(x) (((x) * 10) / 0x10)
2017
2018 #define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */
2019
2020 void mgmt_fill_version_info(void *ver);
2021 int mgmt_new_settings(struct hci_dev *hdev);
2022 void mgmt_index_added(struct hci_dev *hdev);
2023 void mgmt_index_removed(struct hci_dev *hdev);
2024 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
2025 void mgmt_power_on(struct hci_dev *hdev, int err);
2026 void __mgmt_power_off(struct hci_dev *hdev);
2027 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
2028 bool persistent);
2029 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
2030 u8 *name, u8 name_len);
2031 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
2032 u8 link_type, u8 addr_type, u8 reason,
2033 bool mgmt_connected);
2034 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
2035 u8 link_type, u8 addr_type, u8 status);
2036 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2037 u8 addr_type, u8 status);
2038 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
2039 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2040 u8 status);
2041 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2042 u8 status);
2043 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2044 u8 link_type, u8 addr_type, u32 value,
2045 u8 confirm_hint);
2046 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2047 u8 link_type, u8 addr_type, u8 status);
2048 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2049 u8 link_type, u8 addr_type, u8 status);
2050 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2051 u8 link_type, u8 addr_type);
2052 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2053 u8 link_type, u8 addr_type, u8 status);
2054 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2055 u8 link_type, u8 addr_type, u8 status);
2056 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
2057 u8 link_type, u8 addr_type, u32 passkey,
2058 u8 entered);
2059 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
2060 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
2061 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
2062 u8 status);
2063 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
2064 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
2065 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
2066 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2067 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
2068 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len,
2069 u64 instant);
2070 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2071 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
2072 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
2073 void mgmt_suspending(struct hci_dev *hdev, u8 state);
2074 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
2075 u8 addr_type);
2076 bool mgmt_powering_down(struct hci_dev *hdev);
2077 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
2078 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
2079 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
2080 bool persistent);
2081 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
2082 u8 bdaddr_type, u8 store_hint, u16 min_interval,
2083 u16 max_interval, u16 latency, u16 timeout);
2084 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
2085 bool mgmt_get_connectable(struct hci_dev *hdev);
2086 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
2087 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
2088 u8 instance);
2089 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
2090 u8 instance);
2091 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle);
2092 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
2093 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle,
2094 bdaddr_t *bdaddr, u8 addr_type);
2095
2096 int hci_abort_conn(struct hci_conn *conn, u8 reason);
2097 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
2098 u16 to_multiplier);
2099 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
2100 __u8 ltk[16], __u8 key_size);
2101
2102 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
2103 u8 *bdaddr_type);
2104
2105 #define SCO_AIRMODE_MASK 0x0003
2106 #define SCO_AIRMODE_CVSD 0x0000
2107 #define SCO_AIRMODE_TRANSP 0x0003
2108
2109 #define LOCAL_CODEC_ACL_MASK BIT(0)
2110 #define LOCAL_CODEC_SCO_MASK BIT(1)
2111
2112 #define TRANSPORT_TYPE_MAX 0x04
2113
2114 #endif /* __HCI_CORE_H */
2115