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 #include <linux/android_kabi.h>
32
33 #include <net/bluetooth/hci.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 };
95
96 #define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
97
98 enum suspend_tasks {
99 SUSPEND_PAUSE_DISCOVERY,
100 SUSPEND_UNPAUSE_DISCOVERY,
101
102 SUSPEND_PAUSE_ADVERTISING,
103 SUSPEND_UNPAUSE_ADVERTISING,
104
105 SUSPEND_SCAN_DISABLE,
106 SUSPEND_SCAN_ENABLE,
107 SUSPEND_DISCONNECTING,
108
109 SUSPEND_POWERING_DOWN,
110
111 SUSPEND_PREPARE_NOTIFIER,
112
113 SUSPEND_SET_ADV_FILTER,
114 __SUSPEND_NUM_TASKS
115 };
116
117 enum suspended_state {
118 BT_RUNNING = 0,
119 BT_SUSPEND_DISCONNECT,
120 BT_SUSPEND_CONFIGURE_WAKE,
121 };
122
123 struct hci_conn_hash {
124 struct list_head list;
125 unsigned int acl_num;
126 unsigned int amp_num;
127 unsigned int sco_num;
128 unsigned int le_num;
129 unsigned int le_num_peripheral;
130 };
131
132 struct bdaddr_list {
133 struct list_head list;
134 bdaddr_t bdaddr;
135 u8 bdaddr_type;
136 };
137
138 struct bdaddr_list_with_irk {
139 struct list_head list;
140 bdaddr_t bdaddr;
141 u8 bdaddr_type;
142 u8 peer_irk[16];
143 u8 local_irk[16];
144 };
145
146 struct bdaddr_list_with_flags {
147 struct list_head list;
148 bdaddr_t bdaddr;
149 u8 bdaddr_type;
150 u32 current_flags;
151 };
152
153 enum hci_conn_flags {
154 HCI_CONN_FLAG_REMOTE_WAKEUP,
155 HCI_CONN_FLAG_MAX
156 };
157
158 #define hci_conn_test_flag(nr, flags) ((flags) & (1U << nr))
159
160 /* Make sure number of flags doesn't exceed sizeof(current_flags) */
161 static_assert(HCI_CONN_FLAG_MAX < 32);
162
163 struct bt_uuid {
164 struct list_head list;
165 u8 uuid[16];
166 u8 size;
167 u8 svc_hint;
168 };
169
170 struct blocked_key {
171 struct list_head list;
172 struct rcu_head rcu;
173 u8 type;
174 u8 val[16];
175 };
176
177 struct smp_csrk {
178 bdaddr_t bdaddr;
179 u8 bdaddr_type;
180 u8 link_type;
181 u8 type;
182 u8 val[16];
183 };
184
185 struct smp_ltk {
186 struct list_head list;
187 struct rcu_head rcu;
188 bdaddr_t bdaddr;
189 u8 bdaddr_type;
190 u8 link_type;
191 u8 authenticated;
192 u8 type;
193 u8 enc_size;
194 __le16 ediv;
195 __le64 rand;
196 u8 val[16];
197 };
198
199 struct smp_irk {
200 struct list_head list;
201 struct rcu_head rcu;
202 bdaddr_t rpa;
203 bdaddr_t bdaddr;
204 u8 addr_type;
205 u8 link_type;
206 u8 val[16];
207 };
208
209 struct link_key {
210 struct list_head list;
211 struct rcu_head rcu;
212 bdaddr_t bdaddr;
213 u8 bdaddr_type;
214 u8 link_type;
215 u8 type;
216 u8 val[HCI_LINK_KEY_SIZE];
217 u8 pin_len;
218 };
219
220 struct oob_data {
221 struct list_head list;
222 bdaddr_t bdaddr;
223 u8 bdaddr_type;
224 u8 present;
225 u8 hash192[16];
226 u8 rand192[16];
227 u8 hash256[16];
228 u8 rand256[16];
229 };
230
231 struct adv_info {
232 struct list_head list;
233 bool enabled;
234 bool pending;
235 __u8 instance;
236 __u32 flags;
237 __u16 timeout;
238 __u16 remaining_time;
239 __u16 duration;
240 __u16 adv_data_len;
241 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
242 __u16 scan_rsp_len;
243 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
244 __s8 tx_power;
245 __u32 min_interval;
246 __u32 max_interval;
247 bdaddr_t random_addr;
248 bool rpa_expired;
249 struct delayed_work rpa_expired_cb;
250 };
251
252 #define HCI_MAX_ADV_INSTANCES 5
253 #define HCI_DEFAULT_ADV_DURATION 2
254
255 #define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F
256
257 struct adv_pattern {
258 struct list_head list;
259 __u8 ad_type;
260 __u8 offset;
261 __u8 length;
262 __u8 value[HCI_MAX_AD_LENGTH];
263 };
264
265 struct adv_rssi_thresholds {
266 __s8 low_threshold;
267 __s8 high_threshold;
268 __u16 low_threshold_timeout;
269 __u16 high_threshold_timeout;
270 __u8 sampling_period;
271 };
272
273 struct adv_monitor {
274 struct list_head patterns;
275 struct adv_rssi_thresholds rssi;
276 __u16 handle;
277
278 enum {
279 ADV_MONITOR_STATE_NOT_REGISTERED,
280 ADV_MONITOR_STATE_REGISTERED,
281 ADV_MONITOR_STATE_OFFLOADED
282 } state;
283 };
284
285 #define HCI_MIN_ADV_MONITOR_HANDLE 1
286 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32
287 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16
288 #define HCI_ADV_MONITOR_EXT_NONE 1
289 #define HCI_ADV_MONITOR_EXT_MSFT 2
290
291 #define HCI_MAX_SHORT_NAME_LENGTH 10
292
293 /* Min encryption key size to match with SMP */
294 #define HCI_MIN_ENC_KEY_SIZE 7
295
296 /* Default LE RPA expiry time, 15 minutes */
297 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
298
299 /* Default min/max age of connection information (1s/3s) */
300 #define DEFAULT_CONN_INFO_MIN_AGE 1000
301 #define DEFAULT_CONN_INFO_MAX_AGE 3000
302 /* Default authenticated payload timeout 30s */
303 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8
304
305 struct amp_assoc {
306 __u16 len;
307 __u16 offset;
308 __u16 rem_len;
309 __u16 len_so_far;
310 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
311 };
312
313 #define HCI_MAX_PAGES 3
314
315 struct hci_dev {
316 struct list_head list;
317 struct mutex lock;
318
319 char name[8];
320 unsigned long flags;
321 __u16 id;
322 __u8 bus;
323 __u8 dev_type;
324 bdaddr_t bdaddr;
325 bdaddr_t setup_addr;
326 bdaddr_t public_addr;
327 bdaddr_t random_addr;
328 bdaddr_t static_addr;
329 __u8 adv_addr_type;
330 __u8 dev_name[HCI_MAX_NAME_LENGTH];
331 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
332 __u8 eir[HCI_MAX_EIR_LENGTH];
333 __u16 appearance;
334 __u8 dev_class[3];
335 __u8 major_class;
336 __u8 minor_class;
337 __u8 max_page;
338 __u8 features[HCI_MAX_PAGES][8];
339 __u8 le_features[8];
340 __u8 le_accept_list_size;
341 __u8 le_resolv_list_size;
342 __u8 le_num_of_adv_sets;
343 __u8 le_states[8];
344 __u8 commands[64];
345 __u8 hci_ver;
346 __u16 hci_rev;
347 __u8 lmp_ver;
348 __u16 manufacturer;
349 __u16 lmp_subver;
350 __u16 voice_setting;
351 __u8 num_iac;
352 __u8 stored_max_keys;
353 __u8 stored_num_keys;
354 __u8 io_capability;
355 __s8 inq_tx_power;
356 __u8 err_data_reporting;
357 __u16 page_scan_interval;
358 __u16 page_scan_window;
359 __u8 page_scan_type;
360 __u8 le_adv_channel_map;
361 __u16 le_adv_min_interval;
362 __u16 le_adv_max_interval;
363 __u8 le_scan_type;
364 __u16 le_scan_interval;
365 __u16 le_scan_window;
366 __u16 le_scan_int_suspend;
367 __u16 le_scan_window_suspend;
368 __u16 le_scan_int_discovery;
369 __u16 le_scan_window_discovery;
370 __u16 le_scan_int_adv_monitor;
371 __u16 le_scan_window_adv_monitor;
372 __u16 le_scan_int_connect;
373 __u16 le_scan_window_connect;
374 __u16 le_conn_min_interval;
375 __u16 le_conn_max_interval;
376 __u16 le_conn_latency;
377 __u16 le_supv_timeout;
378 __u16 le_def_tx_len;
379 __u16 le_def_tx_time;
380 __u16 le_max_tx_len;
381 __u16 le_max_tx_time;
382 __u16 le_max_rx_len;
383 __u16 le_max_rx_time;
384 __u8 le_max_key_size;
385 __u8 le_min_key_size;
386 __u16 discov_interleaved_timeout;
387 __u16 conn_info_min_age;
388 __u16 conn_info_max_age;
389 __u16 auth_payload_timeout;
390 __u8 min_enc_key_size;
391 __u8 max_enc_key_size;
392 __u8 pairing_opts;
393 __u8 ssp_debug_mode;
394 __u8 hw_error_code;
395 __u32 clock;
396 __u16 advmon_allowlist_duration;
397 __u16 advmon_no_filter_duration;
398 __u8 enable_advmon_interleave_scan;
399
400 __u16 devid_source;
401 __u16 devid_vendor;
402 __u16 devid_product;
403 __u16 devid_version;
404
405 __u8 def_page_scan_type;
406 __u16 def_page_scan_int;
407 __u16 def_page_scan_window;
408 __u8 def_inq_scan_type;
409 __u16 def_inq_scan_int;
410 __u16 def_inq_scan_window;
411 __u16 def_br_lsto;
412 __u16 def_page_timeout;
413 __u16 def_multi_adv_rotation_duration;
414 __u16 def_le_autoconnect_timeout;
415 __s8 min_le_tx_power;
416 __s8 max_le_tx_power;
417
418 __u16 pkt_type;
419 __u16 esco_type;
420 __u16 link_policy;
421 __u16 link_mode;
422
423 __u32 idle_timeout;
424 __u16 sniff_min_interval;
425 __u16 sniff_max_interval;
426
427 __u8 amp_status;
428 __u32 amp_total_bw;
429 __u32 amp_max_bw;
430 __u32 amp_min_latency;
431 __u32 amp_max_pdu;
432 __u8 amp_type;
433 __u16 amp_pal_cap;
434 __u16 amp_assoc_size;
435 __u32 amp_max_flush_to;
436 __u32 amp_be_flush_to;
437
438 struct amp_assoc loc_assoc;
439
440 __u8 flow_ctl_mode;
441
442 unsigned int auto_accept_delay;
443
444 unsigned long quirks;
445
446 atomic_t cmd_cnt;
447 unsigned int acl_cnt;
448 unsigned int sco_cnt;
449 unsigned int le_cnt;
450
451 unsigned int acl_mtu;
452 unsigned int sco_mtu;
453 unsigned int le_mtu;
454 unsigned int acl_pkts;
455 unsigned int sco_pkts;
456 unsigned int le_pkts;
457
458 __u16 block_len;
459 __u16 block_mtu;
460 __u16 num_blocks;
461 __u16 block_cnt;
462
463 unsigned long acl_last_tx;
464 unsigned long sco_last_tx;
465 unsigned long le_last_tx;
466
467 __u8 le_tx_def_phys;
468 __u8 le_rx_def_phys;
469
470 struct workqueue_struct *workqueue;
471 struct workqueue_struct *req_workqueue;
472
473 struct work_struct power_on;
474 struct delayed_work power_off;
475 struct work_struct error_reset;
476
477 __u16 discov_timeout;
478 struct delayed_work discov_off;
479
480 struct delayed_work service_cache;
481
482 struct delayed_work cmd_timer;
483 struct delayed_work ncmd_timer;
484
485 struct work_struct rx_work;
486 struct work_struct cmd_work;
487 struct work_struct tx_work;
488
489 struct work_struct discov_update;
490 struct work_struct bg_scan_update;
491 struct work_struct scan_update;
492 struct work_struct connectable_update;
493 struct work_struct discoverable_update;
494 struct delayed_work le_scan_disable;
495 struct delayed_work le_scan_restart;
496
497 struct sk_buff_head rx_q;
498 struct sk_buff_head raw_q;
499 struct sk_buff_head cmd_q;
500
501 struct sk_buff *sent_cmd;
502
503 struct mutex req_lock;
504 wait_queue_head_t req_wait_q;
505 __u32 req_status;
506 __u32 req_result;
507 struct sk_buff *req_skb;
508
509 void *smp_data;
510 void *smp_bredr_data;
511
512 struct discovery_state discovery;
513
514 int discovery_old_state;
515 bool discovery_paused;
516 int advertising_old_state;
517 bool advertising_paused;
518
519 struct notifier_block suspend_notifier;
520 struct work_struct suspend_prepare;
521 enum suspended_state suspend_state_next;
522 enum suspended_state suspend_state;
523 bool scanning_paused;
524 bool suspended;
525 u8 wake_reason;
526 bdaddr_t wake_addr;
527 u8 wake_addr_type;
528
529 wait_queue_head_t suspend_wait_q;
530 DECLARE_BITMAP(suspend_tasks, __SUSPEND_NUM_TASKS);
531
532 struct hci_conn_hash conn_hash;
533
534 struct list_head mgmt_pending;
535 struct list_head reject_list;
536 struct list_head accept_list;
537 struct list_head uuids;
538 struct list_head link_keys;
539 struct list_head long_term_keys;
540 struct list_head identity_resolving_keys;
541 struct list_head remote_oob_data;
542 struct list_head le_accept_list;
543 struct list_head le_resolv_list;
544 struct list_head le_conn_params;
545 struct list_head pend_le_conns;
546 struct list_head pend_le_reports;
547 struct list_head blocked_keys;
548
549 struct hci_dev_stats stat;
550
551 atomic_t promisc;
552
553 const char *hw_info;
554 const char *fw_info;
555 struct dentry *debugfs;
556
557 struct device dev;
558
559 struct rfkill *rfkill;
560
561 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
562
563 __s8 adv_tx_power;
564 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
565 __u8 adv_data_len;
566 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
567 __u8 scan_rsp_data_len;
568
569 struct list_head adv_instances;
570 unsigned int adv_instance_cnt;
571 __u8 cur_adv_instance;
572 __u16 adv_instance_timeout;
573 struct delayed_work adv_instance_expire;
574
575 struct idr adv_monitors_idr;
576 unsigned int adv_monitors_cnt;
577
578 __u8 irk[16];
579 __u32 rpa_timeout;
580 struct delayed_work rpa_expired;
581 bdaddr_t rpa;
582
583 enum {
584 INTERLEAVE_SCAN_NONE,
585 INTERLEAVE_SCAN_NO_FILTER,
586 INTERLEAVE_SCAN_ALLOWLIST
587 } interleave_scan_state;
588
589 struct delayed_work interleave_scan;
590
591 #if IS_ENABLED(CONFIG_BT_LEDS)
592 struct led_trigger *power_led;
593 #endif
594
595 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
596 __u16 msft_opcode;
597 void *msft_data;
598 bool msft_curve_validity;
599 #endif
600
601 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
602 bool aosp_capable;
603 #endif
604
605 int (*open)(struct hci_dev *hdev);
606 int (*close)(struct hci_dev *hdev);
607 int (*flush)(struct hci_dev *hdev);
608 int (*setup)(struct hci_dev *hdev);
609 int (*shutdown)(struct hci_dev *hdev);
610 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
611 void (*notify)(struct hci_dev *hdev, unsigned int evt);
612 void (*hw_error)(struct hci_dev *hdev, u8 code);
613 int (*post_init)(struct hci_dev *hdev);
614 int (*set_diag)(struct hci_dev *hdev, bool enable);
615 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
616 void (*cmd_timeout)(struct hci_dev *hdev);
617 bool (*prevent_wake)(struct hci_dev *hdev);
618
619 ANDROID_KABI_RESERVE(1);
620 ANDROID_KABI_RESERVE(2);
621 ANDROID_KABI_RESERVE(3);
622 ANDROID_KABI_RESERVE(4);
623 };
624
625 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
626
627 enum conn_reasons {
628 CONN_REASON_PAIR_DEVICE,
629 CONN_REASON_L2CAP_CHAN,
630 CONN_REASON_SCO_CONNECT,
631 };
632
633 struct hci_conn {
634 struct list_head list;
635
636 atomic_t refcnt;
637
638 bdaddr_t dst;
639 __u8 dst_type;
640 bdaddr_t src;
641 __u8 src_type;
642 bdaddr_t init_addr;
643 __u8 init_addr_type;
644 bdaddr_t resp_addr;
645 __u8 resp_addr_type;
646 __u8 adv_instance;
647 __u16 handle;
648 __u16 state;
649 __u8 mode;
650 __u8 type;
651 __u8 role;
652 bool out;
653 __u8 attempt;
654 __u8 dev_class[3];
655 __u8 features[HCI_MAX_PAGES][8];
656 __u16 pkt_type;
657 __u16 link_policy;
658 __u8 key_type;
659 __u8 auth_type;
660 __u8 sec_level;
661 __u8 pending_sec_level;
662 __u8 pin_length;
663 __u8 enc_key_size;
664 __u8 io_capability;
665 __u32 passkey_notify;
666 __u8 passkey_entered;
667 __u16 disc_timeout;
668 __u16 conn_timeout;
669 __u16 setting;
670 __u16 auth_payload_timeout;
671 __u16 le_conn_min_interval;
672 __u16 le_conn_max_interval;
673 __u16 le_conn_interval;
674 __u16 le_conn_latency;
675 __u16 le_supv_timeout;
676 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
677 __u8 le_adv_data_len;
678 __u8 le_tx_phy;
679 __u8 le_rx_phy;
680 __s8 rssi;
681 __s8 tx_power;
682 __s8 max_tx_power;
683 unsigned long flags;
684
685 enum conn_reasons conn_reason;
686
687 __u32 clock;
688 __u16 clock_accuracy;
689
690 unsigned long conn_info_timestamp;
691
692 __u8 remote_cap;
693 __u8 remote_auth;
694 __u8 remote_id;
695
696 unsigned int sent;
697
698 struct sk_buff_head data_q;
699 struct list_head chan_list;
700
701 struct delayed_work disc_work;
702 struct delayed_work auto_accept_work;
703 struct delayed_work idle_work;
704 struct delayed_work le_conn_timeout;
705 struct work_struct le_scan_cleanup;
706
707 struct device dev;
708 struct dentry *debugfs;
709
710 struct hci_dev *hdev;
711 void *l2cap_data;
712 void *sco_data;
713 struct amp_mgr *amp_mgr;
714
715 struct hci_conn *link;
716
717 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
718 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
719 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
720
721 ANDROID_KABI_RESERVE(1);
722 ANDROID_KABI_RESERVE(2);
723 ANDROID_KABI_RESERVE(3);
724 ANDROID_KABI_RESERVE(4);
725 };
726
727 struct hci_chan {
728 struct list_head list;
729 __u16 handle;
730 struct hci_conn *conn;
731 struct sk_buff_head data_q;
732 unsigned int sent;
733 __u8 state;
734 bool amp;
735
736 ANDROID_KABI_RESERVE(1);
737 };
738
739 struct hci_conn_params {
740 struct list_head list;
741 struct list_head action;
742
743 bdaddr_t addr;
744 u8 addr_type;
745
746 u16 conn_min_interval;
747 u16 conn_max_interval;
748 u16 conn_latency;
749 u16 supervision_timeout;
750
751 enum {
752 HCI_AUTO_CONN_DISABLED,
753 HCI_AUTO_CONN_REPORT,
754 HCI_AUTO_CONN_DIRECT,
755 HCI_AUTO_CONN_ALWAYS,
756 HCI_AUTO_CONN_LINK_LOSS,
757 HCI_AUTO_CONN_EXPLICIT,
758 } auto_connect;
759
760 struct hci_conn *conn;
761 bool explicit_connect;
762 u32 current_flags;
763
764 ANDROID_KABI_RESERVE(1);
765 };
766
767 extern struct list_head hci_dev_list;
768 extern struct list_head hci_cb_list;
769 extern rwlock_t hci_dev_list_lock;
770 extern struct mutex hci_cb_list_lock;
771
772 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
773 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
774 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
775 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
776 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
777 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
778 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
779
780 #define hci_dev_clear_volatile_flags(hdev) \
781 do { \
782 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
783 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
784 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
785 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
786 } while (0)
787
788 /* ----- HCI interface to upper protocols ----- */
789 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
790 int l2cap_disconn_ind(struct hci_conn *hcon);
791 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
792
793 #if IS_ENABLED(CONFIG_BT_BREDR)
794 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
795 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
796 #else
sco_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 * flags)797 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
798 __u8 *flags)
799 {
800 return 0;
801 }
802
sco_recv_scodata(struct hci_conn * hcon,struct sk_buff * skb)803 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
804 {
805 }
806 #endif
807
808 /* ----- Inquiry cache ----- */
809 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
810 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
811
discovery_init(struct hci_dev * hdev)812 static inline void discovery_init(struct hci_dev *hdev)
813 {
814 hdev->discovery.state = DISCOVERY_STOPPED;
815 INIT_LIST_HEAD(&hdev->discovery.all);
816 INIT_LIST_HEAD(&hdev->discovery.unknown);
817 INIT_LIST_HEAD(&hdev->discovery.resolve);
818 hdev->discovery.report_invalid_rssi = true;
819 hdev->discovery.rssi = HCI_RSSI_INVALID;
820 }
821
hci_discovery_filter_clear(struct hci_dev * hdev)822 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
823 {
824 hdev->discovery.result_filtering = false;
825 hdev->discovery.report_invalid_rssi = true;
826 hdev->discovery.rssi = HCI_RSSI_INVALID;
827 hdev->discovery.uuid_count = 0;
828 kfree(hdev->discovery.uuids);
829 hdev->discovery.uuids = NULL;
830 hdev->discovery.scan_start = 0;
831 hdev->discovery.scan_duration = 0;
832 }
833
834 bool hci_discovery_active(struct hci_dev *hdev);
835
836 void hci_discovery_set_state(struct hci_dev *hdev, int state);
837
inquiry_cache_empty(struct hci_dev * hdev)838 static inline int inquiry_cache_empty(struct hci_dev *hdev)
839 {
840 return list_empty(&hdev->discovery.all);
841 }
842
inquiry_cache_age(struct hci_dev * hdev)843 static inline long inquiry_cache_age(struct hci_dev *hdev)
844 {
845 struct discovery_state *c = &hdev->discovery;
846 return jiffies - c->timestamp;
847 }
848
inquiry_entry_age(struct inquiry_entry * e)849 static inline long inquiry_entry_age(struct inquiry_entry *e)
850 {
851 return jiffies - e->timestamp;
852 }
853
854 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
855 bdaddr_t *bdaddr);
856 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
857 bdaddr_t *bdaddr);
858 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
859 bdaddr_t *bdaddr,
860 int state);
861 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
862 struct inquiry_entry *ie);
863 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
864 bool name_known);
865 void hci_inquiry_cache_flush(struct hci_dev *hdev);
866
867 /* ----- HCI Connections ----- */
868 enum {
869 HCI_CONN_AUTH_PEND,
870 HCI_CONN_ENCRYPT_PEND,
871 HCI_CONN_RSWITCH_PEND,
872 HCI_CONN_MODE_CHANGE_PEND,
873 HCI_CONN_SCO_SETUP_PEND,
874 HCI_CONN_MGMT_CONNECTED,
875 HCI_CONN_SSP_ENABLED,
876 HCI_CONN_SC_ENABLED,
877 HCI_CONN_AES_CCM,
878 HCI_CONN_POWER_SAVE,
879 HCI_CONN_FLUSH_KEY,
880 HCI_CONN_ENCRYPT,
881 HCI_CONN_AUTH,
882 HCI_CONN_SECURE,
883 HCI_CONN_FIPS,
884 HCI_CONN_STK_ENCRYPT,
885 HCI_CONN_AUTH_INITIATOR,
886 HCI_CONN_DROP,
887 HCI_CONN_PARAM_REMOVAL_PEND,
888 HCI_CONN_NEW_LINK_KEY,
889 HCI_CONN_SCANNING,
890 HCI_CONN_AUTH_FAILURE,
891 };
892
hci_conn_ssp_enabled(struct hci_conn * conn)893 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
894 {
895 struct hci_dev *hdev = conn->hdev;
896 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
897 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
898 }
899
hci_conn_sc_enabled(struct hci_conn * conn)900 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
901 {
902 struct hci_dev *hdev = conn->hdev;
903 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
904 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
905 }
906
hci_conn_hash_add(struct hci_dev * hdev,struct hci_conn * c)907 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
908 {
909 struct hci_conn_hash *h = &hdev->conn_hash;
910 list_add_rcu(&c->list, &h->list);
911 switch (c->type) {
912 case ACL_LINK:
913 h->acl_num++;
914 break;
915 case AMP_LINK:
916 h->amp_num++;
917 break;
918 case LE_LINK:
919 h->le_num++;
920 if (c->role == HCI_ROLE_SLAVE)
921 h->le_num_peripheral++;
922 break;
923 case SCO_LINK:
924 case ESCO_LINK:
925 h->sco_num++;
926 break;
927 }
928 }
929
hci_conn_hash_del(struct hci_dev * hdev,struct hci_conn * c)930 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
931 {
932 struct hci_conn_hash *h = &hdev->conn_hash;
933
934 list_del_rcu(&c->list);
935 synchronize_rcu();
936
937 switch (c->type) {
938 case ACL_LINK:
939 h->acl_num--;
940 break;
941 case AMP_LINK:
942 h->amp_num--;
943 break;
944 case LE_LINK:
945 h->le_num--;
946 if (c->role == HCI_ROLE_SLAVE)
947 h->le_num_peripheral--;
948 break;
949 case SCO_LINK:
950 case ESCO_LINK:
951 h->sco_num--;
952 break;
953 }
954 }
955
hci_conn_num(struct hci_dev * hdev,__u8 type)956 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
957 {
958 struct hci_conn_hash *h = &hdev->conn_hash;
959 switch (type) {
960 case ACL_LINK:
961 return h->acl_num;
962 case AMP_LINK:
963 return h->amp_num;
964 case LE_LINK:
965 return h->le_num;
966 case SCO_LINK:
967 case ESCO_LINK:
968 return h->sco_num;
969 default:
970 return 0;
971 }
972 }
973
hci_conn_count(struct hci_dev * hdev)974 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
975 {
976 struct hci_conn_hash *c = &hdev->conn_hash;
977
978 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
979 }
980
hci_conn_lookup_type(struct hci_dev * hdev,__u16 handle)981 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
982 {
983 struct hci_conn_hash *h = &hdev->conn_hash;
984 struct hci_conn *c;
985 __u8 type = INVALID_LINK;
986
987 rcu_read_lock();
988
989 list_for_each_entry_rcu(c, &h->list, list) {
990 if (c->handle == handle) {
991 type = c->type;
992 break;
993 }
994 }
995
996 rcu_read_unlock();
997
998 return type;
999 }
1000
hci_conn_hash_lookup_handle(struct hci_dev * hdev,__u16 handle)1001 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
1002 __u16 handle)
1003 {
1004 struct hci_conn_hash *h = &hdev->conn_hash;
1005 struct hci_conn *c;
1006
1007 rcu_read_lock();
1008
1009 list_for_each_entry_rcu(c, &h->list, list) {
1010 if (c->handle == handle) {
1011 rcu_read_unlock();
1012 return c;
1013 }
1014 }
1015 rcu_read_unlock();
1016
1017 return NULL;
1018 }
1019
hci_conn_hash_lookup_ba(struct hci_dev * hdev,__u8 type,bdaddr_t * ba)1020 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
1021 __u8 type, bdaddr_t *ba)
1022 {
1023 struct hci_conn_hash *h = &hdev->conn_hash;
1024 struct hci_conn *c;
1025
1026 rcu_read_lock();
1027
1028 list_for_each_entry_rcu(c, &h->list, list) {
1029 if (c->type == type && !bacmp(&c->dst, ba)) {
1030 rcu_read_unlock();
1031 return c;
1032 }
1033 }
1034
1035 rcu_read_unlock();
1036
1037 return NULL;
1038 }
1039
hci_conn_hash_lookup_le(struct hci_dev * hdev,bdaddr_t * ba,__u8 ba_type)1040 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
1041 bdaddr_t *ba,
1042 __u8 ba_type)
1043 {
1044 struct hci_conn_hash *h = &hdev->conn_hash;
1045 struct hci_conn *c;
1046
1047 rcu_read_lock();
1048
1049 list_for_each_entry_rcu(c, &h->list, list) {
1050 if (c->type != LE_LINK)
1051 continue;
1052
1053 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1054 rcu_read_unlock();
1055 return c;
1056 }
1057 }
1058
1059 rcu_read_unlock();
1060
1061 return NULL;
1062 }
1063
hci_conn_hash_lookup_state(struct hci_dev * hdev,__u8 type,__u16 state)1064 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1065 __u8 type, __u16 state)
1066 {
1067 struct hci_conn_hash *h = &hdev->conn_hash;
1068 struct hci_conn *c;
1069
1070 rcu_read_lock();
1071
1072 list_for_each_entry_rcu(c, &h->list, list) {
1073 if (c->type == type && c->state == state) {
1074 rcu_read_unlock();
1075 return c;
1076 }
1077 }
1078
1079 rcu_read_unlock();
1080
1081 return NULL;
1082 }
1083
hci_lookup_le_connect(struct hci_dev * hdev)1084 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1085 {
1086 struct hci_conn_hash *h = &hdev->conn_hash;
1087 struct hci_conn *c;
1088
1089 rcu_read_lock();
1090
1091 list_for_each_entry_rcu(c, &h->list, list) {
1092 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1093 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1094 rcu_read_unlock();
1095 return c;
1096 }
1097 }
1098
1099 rcu_read_unlock();
1100
1101 return NULL;
1102 }
1103
1104 int hci_disconnect(struct hci_conn *conn, __u8 reason);
1105 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1106 void hci_sco_setup(struct hci_conn *conn, __u8 status);
1107
1108 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1109 u8 role);
1110 int hci_conn_del(struct hci_conn *conn);
1111 void hci_conn_hash_flush(struct hci_dev *hdev);
1112 void hci_conn_check_pending(struct hci_dev *hdev);
1113
1114 struct hci_chan *hci_chan_create(struct hci_conn *conn);
1115 void hci_chan_del(struct hci_chan *chan);
1116 void hci_chan_list_flush(struct hci_conn *conn);
1117 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1118
1119 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1120 u8 dst_type, u8 sec_level,
1121 u16 conn_timeout,
1122 enum conn_reasons conn_reason);
1123 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1124 u8 dst_type, u8 sec_level, u16 conn_timeout,
1125 u8 role, bdaddr_t *direct_rpa);
1126 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1127 u8 sec_level, u8 auth_type,
1128 enum conn_reasons conn_reason);
1129 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1130 __u16 setting);
1131 int hci_conn_check_link_mode(struct hci_conn *conn);
1132 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1133 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1134 bool initiator);
1135 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1136
1137 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1138
1139 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
1140
1141 /*
1142 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1143 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1144 * working or anything else. They just guarantee that the object is available
1145 * and can be dereferenced. So you can use its locks, local variables and any
1146 * other constant data.
1147 * Before accessing runtime data, you _must_ lock the object and then check that
1148 * it is still running. As soon as you release the locks, the connection might
1149 * get dropped, though.
1150 *
1151 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1152 * how long the underlying connection is held. So every channel that runs on the
1153 * hci_conn object calls this to prevent the connection from disappearing. As
1154 * long as you hold a device, you must also guarantee that you have a valid
1155 * reference to the device via hci_conn_get() (or the initial reference from
1156 * hci_conn_add()).
1157 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1158 * break because nobody cares for that. But this means, we cannot use
1159 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1160 */
1161
hci_conn_get(struct hci_conn * conn)1162 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1163 {
1164 get_device(&conn->dev);
1165 return conn;
1166 }
1167
hci_conn_put(struct hci_conn * conn)1168 static inline void hci_conn_put(struct hci_conn *conn)
1169 {
1170 put_device(&conn->dev);
1171 }
1172
hci_conn_hold(struct hci_conn * conn)1173 static inline void hci_conn_hold(struct hci_conn *conn)
1174 {
1175 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1176
1177 atomic_inc(&conn->refcnt);
1178 cancel_delayed_work(&conn->disc_work);
1179 }
1180
hci_conn_drop(struct hci_conn * conn)1181 static inline void hci_conn_drop(struct hci_conn *conn)
1182 {
1183 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1184
1185 if (atomic_dec_and_test(&conn->refcnt)) {
1186 unsigned long timeo;
1187
1188 switch (conn->type) {
1189 case ACL_LINK:
1190 case LE_LINK:
1191 cancel_delayed_work(&conn->idle_work);
1192 if (conn->state == BT_CONNECTED) {
1193 timeo = conn->disc_timeout;
1194 if (!conn->out)
1195 timeo *= 2;
1196 } else {
1197 timeo = 0;
1198 }
1199 break;
1200
1201 case AMP_LINK:
1202 timeo = conn->disc_timeout;
1203 break;
1204
1205 default:
1206 timeo = 0;
1207 break;
1208 }
1209
1210 cancel_delayed_work(&conn->disc_work);
1211 queue_delayed_work(conn->hdev->workqueue,
1212 &conn->disc_work, timeo);
1213 }
1214 }
1215
1216 /* ----- HCI Devices ----- */
hci_dev_put(struct hci_dev * d)1217 static inline void hci_dev_put(struct hci_dev *d)
1218 {
1219 BT_DBG("%s orig refcnt %d", d->name,
1220 kref_read(&d->dev.kobj.kref));
1221
1222 put_device(&d->dev);
1223 }
1224
hci_dev_hold(struct hci_dev * d)1225 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1226 {
1227 BT_DBG("%s orig refcnt %d", d->name,
1228 kref_read(&d->dev.kobj.kref));
1229
1230 get_device(&d->dev);
1231 return d;
1232 }
1233
1234 #define hci_dev_lock(d) mutex_lock(&d->lock)
1235 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
1236
1237 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1238 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1239
hci_get_drvdata(struct hci_dev * hdev)1240 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1241 {
1242 return dev_get_drvdata(&hdev->dev);
1243 }
1244
hci_set_drvdata(struct hci_dev * hdev,void * data)1245 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1246 {
1247 dev_set_drvdata(&hdev->dev, data);
1248 }
1249
hci_get_priv(struct hci_dev * hdev)1250 static inline void *hci_get_priv(struct hci_dev *hdev)
1251 {
1252 return (char *)hdev + sizeof(*hdev);
1253 }
1254
1255 struct hci_dev *hci_dev_get(int index);
1256 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1257
1258 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);
1259
hci_alloc_dev(void)1260 static inline struct hci_dev *hci_alloc_dev(void)
1261 {
1262 return hci_alloc_dev_priv(0);
1263 }
1264
1265 void hci_free_dev(struct hci_dev *hdev);
1266 int hci_register_dev(struct hci_dev *hdev);
1267 void hci_unregister_dev(struct hci_dev *hdev);
1268 void hci_release_dev(struct hci_dev *hdev);
1269 int hci_suspend_dev(struct hci_dev *hdev);
1270 int hci_resume_dev(struct hci_dev *hdev);
1271 int hci_reset_dev(struct hci_dev *hdev);
1272 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1273 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1274 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1275 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1276
hci_set_msft_opcode(struct hci_dev * hdev,__u16 opcode)1277 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1278 {
1279 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
1280 hdev->msft_opcode = opcode;
1281 #endif
1282 }
1283
hci_set_aosp_capable(struct hci_dev * hdev)1284 static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1285 {
1286 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
1287 hdev->aosp_capable = true;
1288 #endif
1289 }
1290
1291 int hci_dev_open(__u16 dev);
1292 int hci_dev_close(__u16 dev);
1293 int hci_dev_do_close(struct hci_dev *hdev);
1294 int hci_dev_reset(__u16 dev);
1295 int hci_dev_reset_stat(__u16 dev);
1296 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1297 int hci_get_dev_list(void __user *arg);
1298 int hci_get_dev_info(void __user *arg);
1299 int hci_get_conn_list(void __user *arg);
1300 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1301 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1302 int hci_inquiry(void __user *arg);
1303
1304 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1305 bdaddr_t *bdaddr, u8 type);
1306 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1307 struct list_head *list, bdaddr_t *bdaddr,
1308 u8 type);
1309 struct bdaddr_list_with_flags *
1310 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1311 u8 type);
1312 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1313 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1314 u8 type, u8 *peer_irk, u8 *local_irk);
1315 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1316 u8 type, u32 flags);
1317 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1318 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1319 u8 type);
1320 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1321 u8 type);
1322 void hci_bdaddr_list_clear(struct list_head *list);
1323
1324 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1325 bdaddr_t *addr, u8 addr_type);
1326 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1327 bdaddr_t *addr, u8 addr_type);
1328 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1329 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1330
1331 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1332 bdaddr_t *addr,
1333 u8 addr_type);
1334
1335 void hci_uuids_clear(struct hci_dev *hdev);
1336
1337 void hci_link_keys_clear(struct hci_dev *hdev);
1338 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1339 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1340 bdaddr_t *bdaddr, u8 *val, u8 type,
1341 u8 pin_len, bool *persistent);
1342 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1343 u8 addr_type, u8 type, u8 authenticated,
1344 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1345 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1346 u8 addr_type, u8 role);
1347 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1348 void hci_smp_ltks_clear(struct hci_dev *hdev);
1349 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1350
1351 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1352 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1353 u8 addr_type);
1354 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1355 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1356 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1357 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1358 void hci_blocked_keys_clear(struct hci_dev *hdev);
1359 void hci_smp_irks_clear(struct hci_dev *hdev);
1360
1361 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1362
1363 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1364 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1365 bdaddr_t *bdaddr, u8 bdaddr_type);
1366 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1367 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1368 u8 *hash256, u8 *rand256);
1369 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1370 u8 bdaddr_type);
1371
1372 void hci_adv_instances_clear(struct hci_dev *hdev);
1373 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1374 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1375 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1376 u16 adv_data_len, u8 *adv_data,
1377 u16 scan_rsp_len, u8 *scan_rsp_data,
1378 u16 timeout, u16 duration, s8 tx_power,
1379 u32 min_interval, u32 max_interval);
1380 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1381 u16 adv_data_len, u8 *adv_data,
1382 u16 scan_rsp_len, u8 *scan_rsp_data);
1383 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1384 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1385
1386 void hci_adv_monitors_clear(struct hci_dev *hdev);
1387 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1388 int hci_add_adv_patterns_monitor_complete(struct hci_dev *hdev, u8 status);
1389 int hci_remove_adv_monitor_complete(struct hci_dev *hdev, u8 status);
1390 bool hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor,
1391 int *err);
1392 bool hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle, int *err);
1393 bool hci_remove_all_adv_monitor(struct hci_dev *hdev, int *err);
1394 bool hci_is_adv_monitoring(struct hci_dev *hdev);
1395 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1396
1397 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1398
1399 void hci_init_sysfs(struct hci_dev *hdev);
1400 void hci_conn_init_sysfs(struct hci_conn *conn);
1401 void hci_conn_add_sysfs(struct hci_conn *conn);
1402 void hci_conn_del_sysfs(struct hci_conn *conn);
1403
1404 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1405
1406 /* ----- LMP capabilities ----- */
1407 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1408 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1409 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1410 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1411 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1412 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1413 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1414 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1415 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1416 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1417 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1418 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1419 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1420 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1421 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1422 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1423 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1424 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1425 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1426 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1427 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1428 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1429 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1430 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1431
1432 /* ----- Extended LMP capabilities ----- */
1433 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1434 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1435 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1436 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1437 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1438 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1439
1440 /* ----- Host capabilities ----- */
1441 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1442 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1443 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1444 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1445
1446 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1447 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1448 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1449 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1450 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \
1451 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED))
1452 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \
1453 !adv->rpa_expired)
1454
1455 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1456 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1457
1458 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1459 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1460
1461 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1462 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1463
1464 /* Use LL Privacy based address resolution if supported */
1465 #define use_ll_privacy(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1466
1467 /* Use ext scanning if set ext scan param and ext scan enable is supported */
1468 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1469 ((dev)->commands[37] & 0x40))
1470 /* Use ext create connection if command is supported */
1471 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1472
1473 /* Extended advertising support */
1474 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1475
1476 /* ----- HCI protocols ----- */
1477 #define HCI_PROTO_DEFER 0x01
1478
hci_proto_connect_ind(struct hci_dev * hdev,bdaddr_t * bdaddr,__u8 type,__u8 * flags)1479 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1480 __u8 type, __u8 *flags)
1481 {
1482 switch (type) {
1483 case ACL_LINK:
1484 return l2cap_connect_ind(hdev, bdaddr);
1485
1486 case SCO_LINK:
1487 case ESCO_LINK:
1488 return sco_connect_ind(hdev, bdaddr, flags);
1489
1490 default:
1491 BT_ERR("unknown link type %d", type);
1492 return -EINVAL;
1493 }
1494 }
1495
hci_proto_disconn_ind(struct hci_conn * conn)1496 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1497 {
1498 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1499 return HCI_ERROR_REMOTE_USER_TERM;
1500
1501 return l2cap_disconn_ind(conn);
1502 }
1503
1504 /* ----- HCI callbacks ----- */
1505 struct hci_cb {
1506 struct list_head list;
1507
1508 char *name;
1509
1510 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1511 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1512 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1513 __u8 encrypt);
1514 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1515 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1516
1517 ANDROID_KABI_RESERVE(1);
1518 };
1519
hci_connect_cfm(struct hci_conn * conn,__u8 status)1520 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1521 {
1522 struct hci_cb *cb;
1523
1524 mutex_lock(&hci_cb_list_lock);
1525 list_for_each_entry(cb, &hci_cb_list, list) {
1526 if (cb->connect_cfm)
1527 cb->connect_cfm(conn, status);
1528 }
1529 mutex_unlock(&hci_cb_list_lock);
1530
1531 if (conn->connect_cfm_cb)
1532 conn->connect_cfm_cb(conn, status);
1533 }
1534
hci_disconn_cfm(struct hci_conn * conn,__u8 reason)1535 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1536 {
1537 struct hci_cb *cb;
1538
1539 mutex_lock(&hci_cb_list_lock);
1540 list_for_each_entry(cb, &hci_cb_list, list) {
1541 if (cb->disconn_cfm)
1542 cb->disconn_cfm(conn, reason);
1543 }
1544 mutex_unlock(&hci_cb_list_lock);
1545
1546 if (conn->disconn_cfm_cb)
1547 conn->disconn_cfm_cb(conn, reason);
1548 }
1549
hci_auth_cfm(struct hci_conn * conn,__u8 status)1550 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1551 {
1552 struct hci_cb *cb;
1553 __u8 encrypt;
1554
1555 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1556 return;
1557
1558 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1559
1560 mutex_lock(&hci_cb_list_lock);
1561 list_for_each_entry(cb, &hci_cb_list, list) {
1562 if (cb->security_cfm)
1563 cb->security_cfm(conn, status, encrypt);
1564 }
1565 mutex_unlock(&hci_cb_list_lock);
1566
1567 if (conn->security_cfm_cb)
1568 conn->security_cfm_cb(conn, status);
1569 }
1570
hci_encrypt_cfm(struct hci_conn * conn,__u8 status)1571 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
1572 {
1573 struct hci_cb *cb;
1574 __u8 encrypt;
1575
1576 if (conn->state == BT_CONFIG) {
1577 if (!status)
1578 conn->state = BT_CONNECTED;
1579
1580 hci_connect_cfm(conn, status);
1581 hci_conn_drop(conn);
1582 return;
1583 }
1584
1585 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
1586 encrypt = 0x00;
1587 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
1588 encrypt = 0x02;
1589 else
1590 encrypt = 0x01;
1591
1592 if (!status) {
1593 if (conn->sec_level == BT_SECURITY_SDP)
1594 conn->sec_level = BT_SECURITY_LOW;
1595
1596 if (conn->pending_sec_level > conn->sec_level)
1597 conn->sec_level = conn->pending_sec_level;
1598 }
1599
1600 mutex_lock(&hci_cb_list_lock);
1601 list_for_each_entry(cb, &hci_cb_list, list) {
1602 if (cb->security_cfm)
1603 cb->security_cfm(conn, status, encrypt);
1604 }
1605 mutex_unlock(&hci_cb_list_lock);
1606
1607 if (conn->security_cfm_cb)
1608 conn->security_cfm_cb(conn, status);
1609 }
1610
hci_key_change_cfm(struct hci_conn * conn,__u8 status)1611 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1612 {
1613 struct hci_cb *cb;
1614
1615 mutex_lock(&hci_cb_list_lock);
1616 list_for_each_entry(cb, &hci_cb_list, list) {
1617 if (cb->key_change_cfm)
1618 cb->key_change_cfm(conn, status);
1619 }
1620 mutex_unlock(&hci_cb_list_lock);
1621 }
1622
hci_role_switch_cfm(struct hci_conn * conn,__u8 status,__u8 role)1623 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1624 __u8 role)
1625 {
1626 struct hci_cb *cb;
1627
1628 mutex_lock(&hci_cb_list_lock);
1629 list_for_each_entry(cb, &hci_cb_list, list) {
1630 if (cb->role_switch_cfm)
1631 cb->role_switch_cfm(conn, status, role);
1632 }
1633 mutex_unlock(&hci_cb_list_lock);
1634 }
1635
eir_get_data(u8 * eir,size_t eir_len,u8 type,size_t * data_len)1636 static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
1637 size_t *data_len)
1638 {
1639 size_t parsed = 0;
1640
1641 if (eir_len < 2)
1642 return NULL;
1643
1644 while (parsed < eir_len - 1) {
1645 u8 field_len = eir[0];
1646
1647 if (field_len == 0)
1648 break;
1649
1650 parsed += field_len + 1;
1651
1652 if (parsed > eir_len)
1653 break;
1654
1655 if (eir[1] != type) {
1656 eir += field_len + 1;
1657 continue;
1658 }
1659
1660 /* Zero length data */
1661 if (field_len == 1)
1662 return NULL;
1663
1664 if (data_len)
1665 *data_len = field_len - 1;
1666
1667 return &eir[2];
1668 }
1669
1670 return NULL;
1671 }
1672
hci_bdaddr_is_rpa(bdaddr_t * bdaddr,u8 addr_type)1673 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1674 {
1675 if (addr_type != ADDR_LE_DEV_RANDOM)
1676 return false;
1677
1678 if ((bdaddr->b[5] & 0xc0) == 0x40)
1679 return true;
1680
1681 return false;
1682 }
1683
hci_is_identity_address(bdaddr_t * addr,u8 addr_type)1684 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1685 {
1686 if (addr_type == ADDR_LE_DEV_PUBLIC)
1687 return true;
1688
1689 /* Check for Random Static address type */
1690 if ((addr->b[5] & 0xc0) == 0xc0)
1691 return true;
1692
1693 return false;
1694 }
1695
hci_get_irk(struct hci_dev * hdev,bdaddr_t * bdaddr,u8 addr_type)1696 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1697 bdaddr_t *bdaddr, u8 addr_type)
1698 {
1699 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1700 return NULL;
1701
1702 return hci_find_irk_by_rpa(hdev, bdaddr);
1703 }
1704
hci_check_conn_params(u16 min,u16 max,u16 latency,u16 to_multiplier)1705 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1706 u16 to_multiplier)
1707 {
1708 u16 max_latency;
1709
1710 if (min > max || min < 6 || max > 3200)
1711 return -EINVAL;
1712
1713 if (to_multiplier < 10 || to_multiplier > 3200)
1714 return -EINVAL;
1715
1716 if (max >= to_multiplier * 8)
1717 return -EINVAL;
1718
1719 max_latency = (to_multiplier * 4 / max) - 1;
1720 if (latency > 499 || latency > max_latency)
1721 return -EINVAL;
1722
1723 return 0;
1724 }
1725
1726 int hci_register_cb(struct hci_cb *hcb);
1727 int hci_unregister_cb(struct hci_cb *hcb);
1728
1729 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1730 const void *param, u32 timeout);
1731 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1732 const void *param, u8 event, u32 timeout);
1733 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
1734 const void *param);
1735
1736 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1737 const void *param);
1738 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1739 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1740
1741 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1742
1743 struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1744 const void *param, u32 timeout);
1745
1746 u32 hci_conn_get_phy(struct hci_conn *conn);
1747
1748 /* ----- HCI Sockets ----- */
1749 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1750 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1751 int flag, struct sock *skip_sk);
1752 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1753 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1754 void *data, u16 data_len, ktime_t tstamp,
1755 int flag, struct sock *skip_sk);
1756
1757 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1758
1759 #define HCI_MGMT_VAR_LEN BIT(0)
1760 #define HCI_MGMT_NO_HDEV BIT(1)
1761 #define HCI_MGMT_UNTRUSTED BIT(2)
1762 #define HCI_MGMT_UNCONFIGURED BIT(3)
1763 #define HCI_MGMT_HDEV_OPTIONAL BIT(4)
1764
1765 struct hci_mgmt_handler {
1766 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1767 u16 data_len);
1768 size_t data_len;
1769 unsigned long flags;
1770 };
1771
1772 struct hci_mgmt_chan {
1773 struct list_head list;
1774 unsigned short channel;
1775 size_t handler_count;
1776 const struct hci_mgmt_handler *handlers;
1777 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1778
1779 ANDROID_KABI_RESERVE(1);
1780 };
1781
1782 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1783 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1784
1785 /* Management interface */
1786 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1787 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1788 BIT(BDADDR_LE_RANDOM))
1789 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1790 BIT(BDADDR_LE_PUBLIC) | \
1791 BIT(BDADDR_LE_RANDOM))
1792
1793 /* These LE scan and inquiry parameters were chosen according to LE General
1794 * Discovery Procedure specification.
1795 */
1796 #define DISCOV_LE_SCAN_WIN 0x12
1797 #define DISCOV_LE_SCAN_INT 0x12
1798 #define DISCOV_LE_TIMEOUT 10240 /* msec */
1799 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1800 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1801 #define DISCOV_BREDR_INQUIRY_LEN 0x08
1802 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
1803 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */
1804 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */
1805
1806 void mgmt_fill_version_info(void *ver);
1807 int mgmt_new_settings(struct hci_dev *hdev);
1808 void mgmt_index_added(struct hci_dev *hdev);
1809 void mgmt_index_removed(struct hci_dev *hdev);
1810 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1811 void mgmt_power_on(struct hci_dev *hdev, int err);
1812 void __mgmt_power_off(struct hci_dev *hdev);
1813 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1814 bool persistent);
1815 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1816 u8 *name, u8 name_len);
1817 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1818 u8 link_type, u8 addr_type, u8 reason,
1819 bool mgmt_connected);
1820 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1821 u8 link_type, u8 addr_type, u8 status);
1822 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1823 u8 addr_type, u8 status);
1824 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1825 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1826 u8 status);
1827 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1828 u8 status);
1829 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1830 u8 link_type, u8 addr_type, u32 value,
1831 u8 confirm_hint);
1832 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1833 u8 link_type, u8 addr_type, u8 status);
1834 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1835 u8 link_type, u8 addr_type, u8 status);
1836 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1837 u8 link_type, u8 addr_type);
1838 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1839 u8 link_type, u8 addr_type, u8 status);
1840 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1841 u8 link_type, u8 addr_type, u8 status);
1842 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1843 u8 link_type, u8 addr_type, u32 passkey,
1844 u8 entered);
1845 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1846 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1847 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1848 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1849 u8 status);
1850 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1851 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
1852 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
1853 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1854 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1855 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1856 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1857 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1858 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1859 void mgmt_suspending(struct hci_dev *hdev, u8 state);
1860 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
1861 u8 addr_type);
1862 bool mgmt_powering_down(struct hci_dev *hdev);
1863 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1864 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1865 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1866 bool persistent);
1867 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1868 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1869 u16 max_interval, u16 latency, u16 timeout);
1870 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1871 bool mgmt_get_connectable(struct hci_dev *hdev);
1872 void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status);
1873 void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status);
1874 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
1875 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
1876 u8 instance);
1877 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
1878 u8 instance);
1879 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle);
1880 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
1881 int mgmt_add_adv_patterns_monitor_complete(struct hci_dev *hdev, u8 status);
1882 int mgmt_remove_adv_monitor_complete(struct hci_dev *hdev, u8 status);
1883
1884 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1885 u16 to_multiplier);
1886 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1887 __u8 ltk[16], __u8 key_size);
1888
1889 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1890 u8 *bdaddr_type);
1891
1892 #define SCO_AIRMODE_MASK 0x0003
1893 #define SCO_AIRMODE_CVSD 0x0000
1894 #define SCO_AIRMODE_TRANSP 0x0003
1895
1896 #endif /* __HCI_CORE_H */
1897