2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
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;
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.
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.
28 #include <linux/idr.h>
29 #include <linux/leds.h>
30 #include <linux/rculist.h>
32 #include <net/bluetooth/hci.h>
33 #include <net/bluetooth/hci_sock.h>
36 #define HCI_PRIO_MAX 7
38 /* HCI maximum id value */
39 #define HCI_MAX_ID 10000
41 /* HCI Core structures */
45 __u8 pscan_period_mode;
53 struct inquiry_entry {
54 struct list_head all; /* inq_cache.all */
55 struct list_head list; /* unknown or resolve */
63 struct inquiry_data data;
66 struct discovery_state {
75 struct list_head all; /* All devices found during inquiry */
76 struct list_head unknown; /* Name state not known */
77 struct list_head resolve; /* Name needs to be resolved */
79 bdaddr_t last_adv_addr;
80 u8 last_adv_addr_type;
83 u8 last_adv_data[HCI_MAX_AD_LENGTH];
85 bool report_invalid_rssi;
86 bool result_filtering;
91 unsigned long scan_start;
92 unsigned long scan_duration;
95 #define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
98 SUSPEND_PAUSE_DISCOVERY,
99 SUSPEND_UNPAUSE_DISCOVERY,
101 SUSPEND_PAUSE_ADVERTISING,
102 SUSPEND_UNPAUSE_ADVERTISING,
104 SUSPEND_SCAN_DISABLE,
106 SUSPEND_DISCONNECTING,
108 SUSPEND_POWERING_DOWN,
110 SUSPEND_PREPARE_NOTIFIER,
114 enum suspended_state {
116 BT_SUSPEND_DISCONNECT,
117 BT_SUSPEND_CONFIGURE_WAKE,
120 struct hci_conn_hash {
121 struct list_head list;
122 unsigned int acl_num;
123 unsigned int amp_num;
124 unsigned int sco_num;
126 unsigned int le_num_slave;
130 struct list_head list;
135 struct bdaddr_list_with_irk {
136 struct list_head list;
143 struct bdaddr_list_with_flags {
144 struct list_head list;
150 enum hci_conn_flags {
151 HCI_CONN_FLAG_REMOTE_WAKEUP,
155 #define hci_conn_test_flag(nr, flags) ((flags) & (1U << nr))
157 /* Make sure number of flags doesn't exceed sizeof(current_flags) */
158 static_assert(HCI_CONN_FLAG_MAX < 32);
161 struct list_head list;
168 struct list_head list;
183 struct list_head list;
197 struct list_head list;
207 struct list_head list;
213 u8 val[HCI_LINK_KEY_SIZE];
218 struct list_head list;
229 struct list_head list;
234 __u16 remaining_time;
237 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
239 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
241 bdaddr_t random_addr;
243 struct delayed_work rpa_expired_cb;
246 #define HCI_MAX_ADV_INSTANCES 5
247 #define HCI_DEFAULT_ADV_DURATION 2
250 struct list_head list;
254 __u8 value[HCI_MAX_AD_LENGTH];
258 struct list_head patterns;
263 #define HCI_MIN_ADV_MONITOR_HANDLE 1
264 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32
265 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16
267 #define HCI_MAX_SHORT_NAME_LENGTH 10
269 /* Min encryption key size to match with SMP */
270 #define HCI_MIN_ENC_KEY_SIZE 7
272 /* Default LE RPA expiry time, 15 minutes */
273 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
275 /* Default min/max age of connection information (1s/3s) */
276 #define DEFAULT_CONN_INFO_MIN_AGE 1000
277 #define DEFAULT_CONN_INFO_MAX_AGE 3000
278 /* Default authenticated payload timeout 30s */
279 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8
286 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
289 #define HCI_MAX_PAGES 3
292 struct list_head list;
302 bdaddr_t public_addr;
303 bdaddr_t random_addr;
304 bdaddr_t static_addr;
306 __u8 dev_name[HCI_MAX_NAME_LENGTH];
307 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
308 __u8 eir[HCI_MAX_EIR_LENGTH];
314 __u8 features[HCI_MAX_PAGES][8];
316 __u8 le_accept_list_size;
317 __u8 le_resolv_list_size;
318 __u8 le_num_of_adv_sets;
328 __u8 stored_max_keys;
329 __u8 stored_num_keys;
332 __u8 err_data_reporting;
333 __u16 page_scan_interval;
334 __u16 page_scan_window;
336 __u8 le_adv_channel_map;
337 __u16 le_adv_min_interval;
338 __u16 le_adv_max_interval;
340 __u16 le_scan_interval;
341 __u16 le_scan_window;
342 __u16 le_scan_int_suspend;
343 __u16 le_scan_window_suspend;
344 __u16 le_scan_int_discovery;
345 __u16 le_scan_window_discovery;
346 __u16 le_scan_int_adv_monitor;
347 __u16 le_scan_window_adv_monitor;
348 __u16 le_scan_int_connect;
349 __u16 le_scan_window_connect;
350 __u16 le_conn_min_interval;
351 __u16 le_conn_max_interval;
352 __u16 le_conn_latency;
353 __u16 le_supv_timeout;
355 __u16 le_def_tx_time;
357 __u16 le_max_tx_time;
359 __u16 le_max_rx_time;
360 __u8 le_max_key_size;
361 __u8 le_min_key_size;
362 __u16 discov_interleaved_timeout;
363 __u16 conn_info_min_age;
364 __u16 conn_info_max_age;
365 __u16 auth_payload_timeout;
366 __u8 min_enc_key_size;
367 __u8 max_enc_key_size;
372 __u16 advmon_allowlist_duration;
373 __u16 advmon_no_filter_duration;
380 __u8 def_page_scan_type;
381 __u16 def_page_scan_int;
382 __u16 def_page_scan_window;
383 __u8 def_inq_scan_type;
384 __u16 def_inq_scan_int;
385 __u16 def_inq_scan_window;
387 __u16 def_page_timeout;
388 __u16 def_multi_adv_rotation_duration;
389 __u16 def_le_autoconnect_timeout;
397 __u16 sniff_min_interval;
398 __u16 sniff_max_interval;
403 __u32 amp_min_latency;
407 __u16 amp_assoc_size;
408 __u32 amp_max_flush_to;
409 __u32 amp_be_flush_to;
411 struct amp_assoc loc_assoc;
415 unsigned int auto_accept_delay;
417 unsigned long quirks;
420 unsigned int acl_cnt;
421 unsigned int sco_cnt;
424 unsigned int acl_mtu;
425 unsigned int sco_mtu;
427 unsigned int acl_pkts;
428 unsigned int sco_pkts;
429 unsigned int le_pkts;
436 unsigned long acl_last_tx;
437 unsigned long sco_last_tx;
438 unsigned long le_last_tx;
443 struct workqueue_struct *workqueue;
444 struct workqueue_struct *req_workqueue;
446 struct work_struct power_on;
447 struct delayed_work power_off;
448 struct work_struct error_reset;
450 __u16 discov_timeout;
451 struct delayed_work discov_off;
453 struct delayed_work service_cache;
455 struct delayed_work cmd_timer;
457 struct work_struct rx_work;
458 struct work_struct cmd_work;
459 struct work_struct tx_work;
461 struct work_struct discov_update;
462 struct work_struct bg_scan_update;
463 struct work_struct scan_update;
464 struct work_struct connectable_update;
465 struct work_struct discoverable_update;
466 struct delayed_work le_scan_disable;
467 struct delayed_work le_scan_restart;
469 struct sk_buff_head rx_q;
470 struct sk_buff_head raw_q;
471 struct sk_buff_head cmd_q;
473 struct sk_buff *sent_cmd;
475 struct mutex req_lock;
476 wait_queue_head_t req_wait_q;
479 struct sk_buff *req_skb;
482 void *smp_bredr_data;
484 struct discovery_state discovery;
486 int discovery_old_state;
487 bool discovery_paused;
488 int advertising_old_state;
489 bool advertising_paused;
491 struct notifier_block suspend_notifier;
492 struct work_struct suspend_prepare;
493 enum suspended_state suspend_state_next;
494 enum suspended_state suspend_state;
495 bool scanning_paused;
501 wait_queue_head_t suspend_wait_q;
502 DECLARE_BITMAP(suspend_tasks, __SUSPEND_NUM_TASKS);
504 struct hci_conn_hash conn_hash;
506 struct list_head mgmt_pending;
507 struct list_head reject_list;
508 struct list_head accept_list;
509 struct list_head uuids;
510 struct list_head link_keys;
511 struct list_head long_term_keys;
512 struct list_head identity_resolving_keys;
513 struct list_head remote_oob_data;
514 struct list_head le_accept_list;
515 struct list_head le_resolv_list;
516 struct list_head le_conn_params;
517 struct list_head pend_le_conns;
518 struct list_head pend_le_reports;
519 struct list_head blocked_keys;
521 struct hci_dev_stats stat;
527 struct dentry *debugfs;
531 struct rfkill *rfkill;
533 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
536 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
538 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
539 __u8 scan_rsp_data_len;
541 struct list_head adv_instances;
542 unsigned int adv_instance_cnt;
543 __u8 cur_adv_instance;
544 __u16 adv_instance_timeout;
545 struct delayed_work adv_instance_expire;
547 struct idr adv_monitors_idr;
548 unsigned int adv_monitors_cnt;
552 struct delayed_work rpa_expired;
556 INTERLEAVE_SCAN_NONE,
557 INTERLEAVE_SCAN_NO_FILTER,
558 INTERLEAVE_SCAN_ALLOWLIST
559 } interleave_scan_state;
561 struct delayed_work interleave_scan;
563 #if IS_ENABLED(CONFIG_BT_LEDS)
564 struct led_trigger *power_led;
567 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
572 int (*open)(struct hci_dev *hdev);
573 int (*close)(struct hci_dev *hdev);
574 int (*flush)(struct hci_dev *hdev);
575 int (*setup)(struct hci_dev *hdev);
576 int (*shutdown)(struct hci_dev *hdev);
577 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
578 void (*notify)(struct hci_dev *hdev, unsigned int evt);
579 void (*hw_error)(struct hci_dev *hdev, u8 code);
580 int (*post_init)(struct hci_dev *hdev);
581 int (*set_diag)(struct hci_dev *hdev, bool enable);
582 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
583 void (*cmd_timeout)(struct hci_dev *hdev);
584 bool (*prevent_wake)(struct hci_dev *hdev);
587 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
590 CONN_REASON_PAIR_DEVICE,
591 CONN_REASON_L2CAP_CHAN,
592 CONN_REASON_SCO_CONNECT,
596 struct list_head list;
616 __u8 features[HCI_MAX_PAGES][8];
622 __u8 pending_sec_level;
626 __u32 passkey_notify;
627 __u8 passkey_entered;
631 __u16 auth_payload_timeout;
632 __u16 le_conn_min_interval;
633 __u16 le_conn_max_interval;
634 __u16 le_conn_interval;
635 __u16 le_conn_latency;
636 __u16 le_supv_timeout;
637 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
638 __u8 le_adv_data_len;
646 enum conn_reasons conn_reason;
649 __u16 clock_accuracy;
651 unsigned long conn_info_timestamp;
659 struct sk_buff_head data_q;
660 struct list_head chan_list;
662 struct delayed_work disc_work;
663 struct delayed_work auto_accept_work;
664 struct delayed_work idle_work;
665 struct delayed_work le_conn_timeout;
666 struct work_struct le_scan_cleanup;
669 struct dentry *debugfs;
671 struct hci_dev *hdev;
674 struct amp_mgr *amp_mgr;
676 struct hci_conn *link;
678 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
679 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
680 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
684 struct list_head list;
686 struct hci_conn *conn;
687 struct sk_buff_head data_q;
693 struct hci_conn_params {
694 struct list_head list;
695 struct list_head action;
700 u16 conn_min_interval;
701 u16 conn_max_interval;
703 u16 supervision_timeout;
706 HCI_AUTO_CONN_DISABLED,
707 HCI_AUTO_CONN_REPORT,
708 HCI_AUTO_CONN_DIRECT,
709 HCI_AUTO_CONN_ALWAYS,
710 HCI_AUTO_CONN_LINK_LOSS,
711 HCI_AUTO_CONN_EXPLICIT,
714 struct hci_conn *conn;
715 bool explicit_connect;
719 extern struct list_head hci_dev_list;
720 extern struct list_head hci_cb_list;
721 extern rwlock_t hci_dev_list_lock;
722 extern struct mutex hci_cb_list_lock;
724 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
725 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
726 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
727 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
728 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
729 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
730 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
732 #define hci_dev_clear_volatile_flags(hdev) \
734 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
735 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
736 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
737 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
740 /* ----- HCI interface to upper protocols ----- */
741 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
742 int l2cap_disconn_ind(struct hci_conn *hcon);
743 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
745 #if IS_ENABLED(CONFIG_BT_BREDR)
746 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
747 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
749 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
755 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
760 /* ----- Inquiry cache ----- */
761 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
762 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
764 static inline void discovery_init(struct hci_dev *hdev)
766 hdev->discovery.state = DISCOVERY_STOPPED;
767 INIT_LIST_HEAD(&hdev->discovery.all);
768 INIT_LIST_HEAD(&hdev->discovery.unknown);
769 INIT_LIST_HEAD(&hdev->discovery.resolve);
770 hdev->discovery.report_invalid_rssi = true;
771 hdev->discovery.rssi = HCI_RSSI_INVALID;
774 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
776 hdev->discovery.result_filtering = false;
777 hdev->discovery.report_invalid_rssi = true;
778 hdev->discovery.rssi = HCI_RSSI_INVALID;
779 hdev->discovery.uuid_count = 0;
780 kfree(hdev->discovery.uuids);
781 hdev->discovery.uuids = NULL;
782 hdev->discovery.scan_start = 0;
783 hdev->discovery.scan_duration = 0;
786 bool hci_discovery_active(struct hci_dev *hdev);
788 void hci_discovery_set_state(struct hci_dev *hdev, int state);
790 static inline int inquiry_cache_empty(struct hci_dev *hdev)
792 return list_empty(&hdev->discovery.all);
795 static inline long inquiry_cache_age(struct hci_dev *hdev)
797 struct discovery_state *c = &hdev->discovery;
798 return jiffies - c->timestamp;
801 static inline long inquiry_entry_age(struct inquiry_entry *e)
803 return jiffies - e->timestamp;
806 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
808 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
810 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
813 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
814 struct inquiry_entry *ie);
815 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
817 void hci_inquiry_cache_flush(struct hci_dev *hdev);
819 /* ----- HCI Connections ----- */
822 HCI_CONN_ENCRYPT_PEND,
823 HCI_CONN_RSWITCH_PEND,
824 HCI_CONN_MODE_CHANGE_PEND,
825 HCI_CONN_SCO_SETUP_PEND,
826 HCI_CONN_MGMT_CONNECTED,
827 HCI_CONN_SSP_ENABLED,
836 HCI_CONN_STK_ENCRYPT,
837 HCI_CONN_AUTH_INITIATOR,
839 HCI_CONN_PARAM_REMOVAL_PEND,
840 HCI_CONN_NEW_LINK_KEY,
842 HCI_CONN_AUTH_FAILURE,
845 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
847 struct hci_dev *hdev = conn->hdev;
848 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
849 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
852 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
854 struct hci_dev *hdev = conn->hdev;
855 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
856 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
859 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
861 struct hci_conn_hash *h = &hdev->conn_hash;
862 list_add_rcu(&c->list, &h->list);
872 if (c->role == HCI_ROLE_SLAVE)
882 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
884 struct hci_conn_hash *h = &hdev->conn_hash;
886 list_del_rcu(&c->list);
898 if (c->role == HCI_ROLE_SLAVE)
908 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
910 struct hci_conn_hash *h = &hdev->conn_hash;
926 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
928 struct hci_conn_hash *c = &hdev->conn_hash;
930 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
933 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
935 struct hci_conn_hash *h = &hdev->conn_hash;
937 __u8 type = INVALID_LINK;
941 list_for_each_entry_rcu(c, &h->list, list) {
942 if (c->handle == handle) {
953 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
956 struct hci_conn_hash *h = &hdev->conn_hash;
961 list_for_each_entry_rcu(c, &h->list, list) {
962 if (c->handle == handle) {
972 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
973 __u8 type, bdaddr_t *ba)
975 struct hci_conn_hash *h = &hdev->conn_hash;
980 list_for_each_entry_rcu(c, &h->list, list) {
981 if (c->type == type && !bacmp(&c->dst, ba)) {
992 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
996 struct hci_conn_hash *h = &hdev->conn_hash;
1001 list_for_each_entry_rcu(c, &h->list, list) {
1002 if (c->type != LE_LINK)
1005 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1016 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1017 __u8 type, __u16 state)
1019 struct hci_conn_hash *h = &hdev->conn_hash;
1024 list_for_each_entry_rcu(c, &h->list, list) {
1025 if (c->type == type && c->state == state) {
1036 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1038 struct hci_conn_hash *h = &hdev->conn_hash;
1043 list_for_each_entry_rcu(c, &h->list, list) {
1044 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1045 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1056 int hci_disconnect(struct hci_conn *conn, __u8 reason);
1057 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1058 void hci_sco_setup(struct hci_conn *conn, __u8 status);
1060 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1062 int hci_conn_del(struct hci_conn *conn);
1063 void hci_conn_hash_flush(struct hci_dev *hdev);
1064 void hci_conn_check_pending(struct hci_dev *hdev);
1066 struct hci_chan *hci_chan_create(struct hci_conn *conn);
1067 void hci_chan_del(struct hci_chan *chan);
1068 void hci_chan_list_flush(struct hci_conn *conn);
1069 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1071 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1072 u8 dst_type, u8 sec_level,
1074 enum conn_reasons conn_reason);
1075 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1076 u8 dst_type, u8 sec_level, u16 conn_timeout,
1077 u8 role, bdaddr_t *direct_rpa);
1078 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1079 u8 sec_level, u8 auth_type,
1080 enum conn_reasons conn_reason);
1081 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1083 int hci_conn_check_link_mode(struct hci_conn *conn);
1084 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1085 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1087 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1089 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1091 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
1094 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1095 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1096 * working or anything else. They just guarantee that the object is available
1097 * and can be dereferenced. So you can use its locks, local variables and any
1098 * other constant data.
1099 * Before accessing runtime data, you _must_ lock the object and then check that
1100 * it is still running. As soon as you release the locks, the connection might
1101 * get dropped, though.
1103 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1104 * how long the underlying connection is held. So every channel that runs on the
1105 * hci_conn object calls this to prevent the connection from disappearing. As
1106 * long as you hold a device, you must also guarantee that you have a valid
1107 * reference to the device via hci_conn_get() (or the initial reference from
1109 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1110 * break because nobody cares for that. But this means, we cannot use
1111 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1114 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1116 get_device(&conn->dev);
1120 static inline void hci_conn_put(struct hci_conn *conn)
1122 put_device(&conn->dev);
1125 static inline void hci_conn_hold(struct hci_conn *conn)
1127 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1129 atomic_inc(&conn->refcnt);
1130 cancel_delayed_work(&conn->disc_work);
1133 static inline void hci_conn_drop(struct hci_conn *conn)
1135 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1137 if (atomic_dec_and_test(&conn->refcnt)) {
1138 unsigned long timeo;
1140 switch (conn->type) {
1143 cancel_delayed_work(&conn->idle_work);
1144 if (conn->state == BT_CONNECTED) {
1145 timeo = conn->disc_timeout;
1154 timeo = conn->disc_timeout;
1162 cancel_delayed_work(&conn->disc_work);
1163 queue_delayed_work(conn->hdev->workqueue,
1164 &conn->disc_work, timeo);
1168 /* ----- HCI Devices ----- */
1169 static inline void hci_dev_put(struct hci_dev *d)
1171 BT_DBG("%s orig refcnt %d", d->name,
1172 kref_read(&d->dev.kobj.kref));
1174 put_device(&d->dev);
1177 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1179 BT_DBG("%s orig refcnt %d", d->name,
1180 kref_read(&d->dev.kobj.kref));
1182 get_device(&d->dev);
1186 #define hci_dev_lock(d) mutex_lock(&d->lock)
1187 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
1189 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1190 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1192 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1194 return dev_get_drvdata(&hdev->dev);
1197 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1199 dev_set_drvdata(&hdev->dev, data);
1202 struct hci_dev *hci_dev_get(int index);
1203 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1205 struct hci_dev *hci_alloc_dev(void);
1206 void hci_free_dev(struct hci_dev *hdev);
1207 int hci_register_dev(struct hci_dev *hdev);
1208 void hci_unregister_dev(struct hci_dev *hdev);
1209 void hci_cleanup_dev(struct hci_dev *hdev);
1210 int hci_suspend_dev(struct hci_dev *hdev);
1211 int hci_resume_dev(struct hci_dev *hdev);
1212 int hci_reset_dev(struct hci_dev *hdev);
1213 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1214 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1215 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1216 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1218 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1220 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
1221 hdev->msft_opcode = opcode;
1225 int hci_dev_open(__u16 dev);
1226 int hci_dev_close(__u16 dev);
1227 int hci_dev_do_close(struct hci_dev *hdev);
1228 int hci_dev_reset(__u16 dev);
1229 int hci_dev_reset_stat(__u16 dev);
1230 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1231 int hci_get_dev_list(void __user *arg);
1232 int hci_get_dev_info(void __user *arg);
1233 int hci_get_conn_list(void __user *arg);
1234 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1235 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1236 int hci_inquiry(void __user *arg);
1238 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1239 bdaddr_t *bdaddr, u8 type);
1240 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1241 struct list_head *list, bdaddr_t *bdaddr,
1243 struct bdaddr_list_with_flags *
1244 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1246 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1247 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1248 u8 type, u8 *peer_irk, u8 *local_irk);
1249 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1250 u8 type, u32 flags);
1251 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1252 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1254 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1256 void hci_bdaddr_list_clear(struct list_head *list);
1258 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1259 bdaddr_t *addr, u8 addr_type);
1260 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1261 bdaddr_t *addr, u8 addr_type);
1262 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1263 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1265 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1269 void hci_uuids_clear(struct hci_dev *hdev);
1271 void hci_link_keys_clear(struct hci_dev *hdev);
1272 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1273 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1274 bdaddr_t *bdaddr, u8 *val, u8 type,
1275 u8 pin_len, bool *persistent);
1276 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1277 u8 addr_type, u8 type, u8 authenticated,
1278 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1279 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1280 u8 addr_type, u8 role);
1281 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1282 void hci_smp_ltks_clear(struct hci_dev *hdev);
1283 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1285 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1286 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1288 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1289 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1290 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1291 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1292 void hci_blocked_keys_clear(struct hci_dev *hdev);
1293 void hci_smp_irks_clear(struct hci_dev *hdev);
1295 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1297 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1298 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1299 bdaddr_t *bdaddr, u8 bdaddr_type);
1300 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1301 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1302 u8 *hash256, u8 *rand256);
1303 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1306 void hci_adv_instances_clear(struct hci_dev *hdev);
1307 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1308 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1309 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1310 u16 adv_data_len, u8 *adv_data,
1311 u16 scan_rsp_len, u8 *scan_rsp_data,
1312 u16 timeout, u16 duration);
1313 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1314 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1316 void hci_adv_monitors_clear(struct hci_dev *hdev);
1317 void hci_free_adv_monitor(struct adv_monitor *monitor);
1318 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1319 int hci_remove_adv_monitor(struct hci_dev *hdev, u16 handle);
1320 bool hci_is_adv_monitoring(struct hci_dev *hdev);
1322 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1324 void hci_init_sysfs(struct hci_dev *hdev);
1325 void hci_conn_init_sysfs(struct hci_conn *conn);
1326 void hci_conn_add_sysfs(struct hci_conn *conn);
1327 void hci_conn_del_sysfs(struct hci_conn *conn);
1329 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1331 /* ----- LMP capabilities ----- */
1332 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1333 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1334 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1335 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1336 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1337 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1338 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1339 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1340 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1341 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1342 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1343 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1344 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1345 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1346 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1347 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1348 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1349 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1350 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1351 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1352 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1353 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1354 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1356 /* ----- Extended LMP capabilities ----- */
1357 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1358 #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
1359 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1360 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1361 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1362 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1364 /* ----- Host capabilities ----- */
1365 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1366 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1367 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1368 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1370 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1371 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1372 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1373 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1375 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1376 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1378 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1379 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1381 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1382 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1384 /* Use LL Privacy based address resolution if supported */
1385 #define use_ll_privacy(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1387 /* Use ext scanning if set ext scan param and ext scan enable is supported */
1388 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1389 ((dev)->commands[37] & 0x40))
1390 /* Use ext create connection if command is supported */
1391 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1393 /* Extended advertising support */
1394 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1396 /* ----- HCI protocols ----- */
1397 #define HCI_PROTO_DEFER 0x01
1399 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1400 __u8 type, __u8 *flags)
1404 return l2cap_connect_ind(hdev, bdaddr);
1408 return sco_connect_ind(hdev, bdaddr, flags);
1411 BT_ERR("unknown link type %d", type);
1416 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1418 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1419 return HCI_ERROR_REMOTE_USER_TERM;
1421 return l2cap_disconn_ind(conn);
1424 /* ----- HCI callbacks ----- */
1426 struct list_head list;
1430 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1431 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1432 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1434 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1435 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1438 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1442 mutex_lock(&hci_cb_list_lock);
1443 list_for_each_entry(cb, &hci_cb_list, list) {
1444 if (cb->connect_cfm)
1445 cb->connect_cfm(conn, status);
1447 mutex_unlock(&hci_cb_list_lock);
1449 if (conn->connect_cfm_cb)
1450 conn->connect_cfm_cb(conn, status);
1453 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1457 mutex_lock(&hci_cb_list_lock);
1458 list_for_each_entry(cb, &hci_cb_list, list) {
1459 if (cb->disconn_cfm)
1460 cb->disconn_cfm(conn, reason);
1462 mutex_unlock(&hci_cb_list_lock);
1464 if (conn->disconn_cfm_cb)
1465 conn->disconn_cfm_cb(conn, reason);
1468 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1473 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1476 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1478 mutex_lock(&hci_cb_list_lock);
1479 list_for_each_entry(cb, &hci_cb_list, list) {
1480 if (cb->security_cfm)
1481 cb->security_cfm(conn, status, encrypt);
1483 mutex_unlock(&hci_cb_list_lock);
1485 if (conn->security_cfm_cb)
1486 conn->security_cfm_cb(conn, status);
1489 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
1494 if (conn->state == BT_CONFIG) {
1496 conn->state = BT_CONNECTED;
1498 hci_connect_cfm(conn, status);
1499 hci_conn_drop(conn);
1503 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
1505 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
1511 if (conn->sec_level == BT_SECURITY_SDP)
1512 conn->sec_level = BT_SECURITY_LOW;
1514 if (conn->pending_sec_level > conn->sec_level)
1515 conn->sec_level = conn->pending_sec_level;
1518 mutex_lock(&hci_cb_list_lock);
1519 list_for_each_entry(cb, &hci_cb_list, list) {
1520 if (cb->security_cfm)
1521 cb->security_cfm(conn, status, encrypt);
1523 mutex_unlock(&hci_cb_list_lock);
1525 if (conn->security_cfm_cb)
1526 conn->security_cfm_cb(conn, status);
1529 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1533 mutex_lock(&hci_cb_list_lock);
1534 list_for_each_entry(cb, &hci_cb_list, list) {
1535 if (cb->key_change_cfm)
1536 cb->key_change_cfm(conn, status);
1538 mutex_unlock(&hci_cb_list_lock);
1541 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1546 mutex_lock(&hci_cb_list_lock);
1547 list_for_each_entry(cb, &hci_cb_list, list) {
1548 if (cb->role_switch_cfm)
1549 cb->role_switch_cfm(conn, status, role);
1551 mutex_unlock(&hci_cb_list_lock);
1554 static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
1562 while (parsed < eir_len - 1) {
1563 u8 field_len = eir[0];
1568 parsed += field_len + 1;
1570 if (parsed > eir_len)
1573 if (eir[1] != type) {
1574 eir += field_len + 1;
1578 /* Zero length data */
1583 *data_len = field_len - 1;
1591 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1593 if (addr_type != ADDR_LE_DEV_RANDOM)
1596 if ((bdaddr->b[5] & 0xc0) == 0x40)
1602 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1604 if (addr_type == ADDR_LE_DEV_PUBLIC)
1607 /* Check for Random Static address type */
1608 if ((addr->b[5] & 0xc0) == 0xc0)
1614 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1615 bdaddr_t *bdaddr, u8 addr_type)
1617 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1620 return hci_find_irk_by_rpa(hdev, bdaddr);
1623 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1628 if (min > max || min < 6 || max > 3200)
1631 if (to_multiplier < 10 || to_multiplier > 3200)
1634 if (max >= to_multiplier * 8)
1637 max_latency = (to_multiplier * 4 / max) - 1;
1638 if (latency > 499 || latency > max_latency)
1644 int hci_register_cb(struct hci_cb *hcb);
1645 int hci_unregister_cb(struct hci_cb *hcb);
1647 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1648 const void *param, u32 timeout);
1649 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1650 const void *param, u8 event, u32 timeout);
1651 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
1654 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1656 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1657 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1659 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1661 struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1662 const void *param, u32 timeout);
1664 u32 hci_conn_get_phy(struct hci_conn *conn);
1666 /* ----- HCI Sockets ----- */
1667 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1668 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1669 int flag, struct sock *skip_sk);
1670 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1671 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1672 void *data, u16 data_len, ktime_t tstamp,
1673 int flag, struct sock *skip_sk);
1675 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1677 #define HCI_MGMT_VAR_LEN BIT(0)
1678 #define HCI_MGMT_NO_HDEV BIT(1)
1679 #define HCI_MGMT_UNTRUSTED BIT(2)
1680 #define HCI_MGMT_UNCONFIGURED BIT(3)
1681 #define HCI_MGMT_HDEV_OPTIONAL BIT(4)
1683 struct hci_mgmt_handler {
1684 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1687 unsigned long flags;
1690 struct hci_mgmt_chan {
1691 struct list_head list;
1692 unsigned short channel;
1693 size_t handler_count;
1694 const struct hci_mgmt_handler *handlers;
1695 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1698 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1699 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1701 /* Management interface */
1702 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1703 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1704 BIT(BDADDR_LE_RANDOM))
1705 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1706 BIT(BDADDR_LE_PUBLIC) | \
1707 BIT(BDADDR_LE_RANDOM))
1709 /* These LE scan and inquiry parameters were chosen according to LE General
1710 * Discovery Procedure specification.
1712 #define DISCOV_LE_SCAN_WIN 0x12
1713 #define DISCOV_LE_SCAN_INT 0x12
1714 #define DISCOV_LE_TIMEOUT 10240 /* msec */
1715 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1716 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1717 #define DISCOV_BREDR_INQUIRY_LEN 0x08
1718 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
1719 #define DISCOV_LE_FAST_ADV_INT_MIN 100 /* msec */
1720 #define DISCOV_LE_FAST_ADV_INT_MAX 150 /* msec */
1722 void mgmt_fill_version_info(void *ver);
1723 int mgmt_new_settings(struct hci_dev *hdev);
1724 void mgmt_index_added(struct hci_dev *hdev);
1725 void mgmt_index_removed(struct hci_dev *hdev);
1726 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1727 void mgmt_power_on(struct hci_dev *hdev, int err);
1728 void __mgmt_power_off(struct hci_dev *hdev);
1729 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1731 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1732 u32 flags, u8 *name, u8 name_len);
1733 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1734 u8 link_type, u8 addr_type, u8 reason,
1735 bool mgmt_connected);
1736 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1737 u8 link_type, u8 addr_type, u8 status);
1738 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1739 u8 addr_type, u8 status);
1740 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1741 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1743 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1745 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1746 u8 link_type, u8 addr_type, u32 value,
1748 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1749 u8 link_type, u8 addr_type, u8 status);
1750 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1751 u8 link_type, u8 addr_type, u8 status);
1752 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1753 u8 link_type, u8 addr_type);
1754 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1755 u8 link_type, u8 addr_type, u8 status);
1756 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1757 u8 link_type, u8 addr_type, u8 status);
1758 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1759 u8 link_type, u8 addr_type, u32 passkey,
1761 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1762 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1763 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1764 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1766 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1767 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
1768 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
1769 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1770 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1771 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1772 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1773 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1774 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1775 void mgmt_suspending(struct hci_dev *hdev, u8 state);
1776 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
1778 bool mgmt_powering_down(struct hci_dev *hdev);
1779 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1780 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1781 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1783 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1784 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1785 u16 max_interval, u16 latency, u16 timeout);
1786 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1787 bool mgmt_get_connectable(struct hci_dev *hdev);
1788 void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status);
1789 void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status);
1790 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
1791 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
1793 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
1795 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
1797 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1799 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1800 __u8 ltk[16], __u8 key_size);
1802 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1805 #define SCO_AIRMODE_MASK 0x0003
1806 #define SCO_AIRMODE_CVSD 0x0000
1807 #define SCO_AIRMODE_TRANSP 0x0003
1809 #endif /* __HCI_CORE_H */