2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
6 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License version 2 as
10 published by the Free Software Foundation;
12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
23 SOFTWARE IS DISCLAIMED.
29 #include <linux/idr.h>
30 #include <linux/leds.h>
31 #include <linux/rculist.h>
33 #include <net/bluetooth/hci.h>
34 #include <net/bluetooth/hci_sync.h>
35 #include <net/bluetooth/hci_sock.h>
36 #include <net/bluetooth/coredump.h>
39 #define HCI_PRIO_MAX 7
41 /* HCI maximum id value */
42 #define HCI_MAX_ID 10000
44 /* HCI Core structures */
48 __u8 pscan_period_mode;
56 struct inquiry_entry {
57 struct list_head all; /* inq_cache.all */
58 struct list_head list; /* unknown or resolve */
66 struct inquiry_data data;
69 struct discovery_state {
78 struct list_head all; /* All devices found during inquiry */
79 struct list_head unknown; /* Name state not known */
80 struct list_head resolve; /* Name needs to be resolved */
82 bdaddr_t last_adv_addr;
83 u8 last_adv_addr_type;
86 u8 last_adv_data[HCI_MAX_AD_LENGTH];
88 bool report_invalid_rssi;
89 bool result_filtering;
94 unsigned long scan_start;
95 unsigned long scan_duration;
96 unsigned long name_resolve_timeout;
99 #define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
102 SUSPEND_PAUSE_DISCOVERY,
103 SUSPEND_UNPAUSE_DISCOVERY,
105 SUSPEND_PAUSE_ADVERTISING,
106 SUSPEND_UNPAUSE_ADVERTISING,
108 SUSPEND_SCAN_DISABLE,
110 SUSPEND_DISCONNECTING,
112 SUSPEND_POWERING_DOWN,
114 SUSPEND_PREPARE_NOTIFIER,
116 SUSPEND_SET_ADV_FILTER,
120 enum suspended_state {
122 BT_SUSPEND_DISCONNECT,
123 BT_SUSPEND_CONFIGURE_WAKE,
126 struct hci_conn_hash {
127 struct list_head list;
128 unsigned int acl_num;
129 unsigned int amp_num;
130 unsigned int sco_num;
131 unsigned int iso_num;
133 unsigned int le_num_peripheral;
137 struct list_head list;
143 struct list_head list;
150 struct hci_codec_caps caps[];
153 struct bdaddr_list_with_irk {
154 struct list_head list;
161 /* Bitmask of connection flags */
162 enum hci_conn_flags {
163 HCI_CONN_FLAG_REMOTE_WAKEUP = 1,
164 HCI_CONN_FLAG_DEVICE_PRIVACY = 2,
166 typedef u8 hci_conn_flags_t;
168 struct bdaddr_list_with_flags {
169 struct list_head list;
172 hci_conn_flags_t flags;
176 struct list_head list;
183 struct list_head list;
197 struct list_head list;
210 struct list_head list;
219 struct list_head list;
223 u8 val[HCI_LINK_KEY_SIZE];
228 struct list_head list;
239 struct list_head list;
247 __u16 remaining_time;
250 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
251 bool adv_data_changed;
253 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
254 bool scan_rsp_changed;
255 __u16 per_adv_data_len;
256 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
260 bdaddr_t random_addr;
262 struct delayed_work rpa_expired_cb;
265 #define HCI_MAX_ADV_INSTANCES 5
266 #define HCI_DEFAULT_ADV_DURATION 2
268 #define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F
270 #define DATA_CMP(_d1, _l1, _d2, _l2) \
271 (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2)
273 #define ADV_DATA_CMP(_adv, _data, _len) \
274 DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len)
276 #define SCAN_RSP_CMP(_adv, _data, _len) \
277 DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len)
279 struct monitored_device {
280 struct list_head list;
289 struct list_head list;
293 __u8 value[HCI_MAX_AD_LENGTH];
296 struct adv_rssi_thresholds {
299 __u16 low_threshold_timeout;
300 __u16 high_threshold_timeout;
301 __u8 sampling_period;
305 struct list_head patterns;
306 struct adv_rssi_thresholds rssi;
310 ADV_MONITOR_STATE_NOT_REGISTERED,
311 ADV_MONITOR_STATE_REGISTERED,
312 ADV_MONITOR_STATE_OFFLOADED
316 #define HCI_MIN_ADV_MONITOR_HANDLE 1
317 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32
318 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16
319 #define HCI_ADV_MONITOR_EXT_NONE 1
320 #define HCI_ADV_MONITOR_EXT_MSFT 2
322 #define HCI_MAX_SHORT_NAME_LENGTH 10
324 #define HCI_CONN_HANDLE_UNSET 0xffff
325 #define HCI_CONN_HANDLE_MAX 0x0eff
327 /* Min encryption key size to match with SMP */
328 #define HCI_MIN_ENC_KEY_SIZE 7
330 /* Default LE RPA expiry time, 15 minutes */
331 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
333 /* Default min/max age of connection information (1s/3s) */
334 #define DEFAULT_CONN_INFO_MIN_AGE 1000
335 #define DEFAULT_CONN_INFO_MAX_AGE 3000
336 /* Default authenticated payload timeout 30s */
337 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8
344 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
347 #define HCI_MAX_PAGES 3
350 struct list_head list;
360 bdaddr_t public_addr;
361 bdaddr_t random_addr;
362 bdaddr_t static_addr;
364 __u8 dev_name[HCI_MAX_NAME_LENGTH];
365 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
366 __u8 eir[HCI_MAX_EIR_LENGTH];
372 __u8 features[HCI_MAX_PAGES][8];
374 __u8 le_accept_list_size;
375 __u8 le_resolv_list_size;
376 __u8 le_num_of_adv_sets;
378 __u8 mesh_ad_types[16];
388 __u16 stored_max_keys;
389 __u16 stored_num_keys;
392 __u8 err_data_reporting;
393 __u16 page_scan_interval;
394 __u16 page_scan_window;
396 __u8 le_adv_channel_map;
397 __u16 le_adv_min_interval;
398 __u16 le_adv_max_interval;
400 __u16 le_scan_interval;
401 __u16 le_scan_window;
402 __u16 le_scan_int_suspend;
403 __u16 le_scan_window_suspend;
404 __u16 le_scan_int_discovery;
405 __u16 le_scan_window_discovery;
406 __u16 le_scan_int_adv_monitor;
407 __u16 le_scan_window_adv_monitor;
408 __u16 le_scan_int_connect;
409 __u16 le_scan_window_connect;
410 __u16 le_conn_min_interval;
411 __u16 le_conn_max_interval;
412 __u16 le_conn_latency;
413 __u16 le_supv_timeout;
415 __u16 le_def_tx_time;
417 __u16 le_max_tx_time;
419 __u16 le_max_rx_time;
420 __u8 le_max_key_size;
421 __u8 le_min_key_size;
422 __u16 discov_interleaved_timeout;
423 __u16 conn_info_min_age;
424 __u16 conn_info_max_age;
425 __u16 auth_payload_timeout;
426 __u8 min_enc_key_size;
427 __u8 max_enc_key_size;
432 __u16 advmon_allowlist_duration;
433 __u16 advmon_no_filter_duration;
434 __u8 enable_advmon_interleave_scan;
441 __u8 def_page_scan_type;
442 __u16 def_page_scan_int;
443 __u16 def_page_scan_window;
444 __u8 def_inq_scan_type;
445 __u16 def_inq_scan_int;
446 __u16 def_inq_scan_window;
448 __u16 def_page_timeout;
449 __u16 def_multi_adv_rotation_duration;
450 __u16 def_le_autoconnect_timeout;
451 __s8 min_le_tx_power;
452 __s8 max_le_tx_power;
460 __u16 sniff_min_interval;
461 __u16 sniff_max_interval;
466 __u32 amp_min_latency;
470 __u16 amp_assoc_size;
471 __u32 amp_max_flush_to;
472 __u32 amp_be_flush_to;
474 struct amp_assoc loc_assoc;
478 unsigned int auto_accept_delay;
480 unsigned long quirks;
483 unsigned int acl_cnt;
484 unsigned int sco_cnt;
486 unsigned int iso_cnt;
488 unsigned int acl_mtu;
489 unsigned int sco_mtu;
491 unsigned int iso_mtu;
492 unsigned int acl_pkts;
493 unsigned int sco_pkts;
494 unsigned int le_pkts;
495 unsigned int iso_pkts;
502 unsigned long acl_last_tx;
503 unsigned long sco_last_tx;
504 unsigned long le_last_tx;
509 struct workqueue_struct *workqueue;
510 struct workqueue_struct *req_workqueue;
512 struct work_struct power_on;
513 struct delayed_work power_off;
514 struct work_struct error_reset;
515 struct work_struct cmd_sync_work;
516 struct list_head cmd_sync_work_list;
517 struct mutex cmd_sync_work_lock;
518 struct mutex unregister_lock;
519 struct work_struct cmd_sync_cancel_work;
520 struct work_struct reenable_adv_work;
522 __u16 discov_timeout;
523 struct delayed_work discov_off;
525 struct delayed_work service_cache;
527 struct delayed_work cmd_timer;
528 struct delayed_work ncmd_timer;
530 struct work_struct rx_work;
531 struct work_struct cmd_work;
532 struct work_struct tx_work;
534 struct delayed_work le_scan_disable;
535 struct delayed_work le_scan_restart;
537 struct sk_buff_head rx_q;
538 struct sk_buff_head raw_q;
539 struct sk_buff_head cmd_q;
541 struct sk_buff *sent_cmd;
542 struct sk_buff *recv_event;
544 struct mutex req_lock;
545 wait_queue_head_t req_wait_q;
548 struct sk_buff *req_skb;
551 void *smp_bredr_data;
553 struct discovery_state discovery;
555 int discovery_old_state;
556 bool discovery_paused;
557 int advertising_old_state;
558 bool advertising_paused;
560 struct notifier_block suspend_notifier;
561 enum suspended_state suspend_state_next;
562 enum suspended_state suspend_state;
563 bool scanning_paused;
569 struct hci_conn_hash conn_hash;
571 struct list_head mesh_pending;
572 struct list_head mgmt_pending;
573 struct list_head reject_list;
574 struct list_head accept_list;
575 struct list_head uuids;
576 struct list_head link_keys;
577 struct list_head long_term_keys;
578 struct list_head identity_resolving_keys;
579 struct list_head remote_oob_data;
580 struct list_head le_accept_list;
581 struct list_head le_resolv_list;
582 struct list_head le_conn_params;
583 struct list_head pend_le_conns;
584 struct list_head pend_le_reports;
585 struct list_head blocked_keys;
586 struct list_head local_codecs;
588 struct hci_dev_stats stat;
594 struct dentry *debugfs;
596 struct hci_devcoredump dump;
600 struct rfkill *rfkill;
602 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
603 hci_conn_flags_t conn_flags;
606 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
608 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
609 __u8 scan_rsp_data_len;
610 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
611 __u8 per_adv_data_len;
613 struct list_head adv_instances;
614 unsigned int adv_instance_cnt;
615 __u8 cur_adv_instance;
616 __u16 adv_instance_timeout;
617 struct delayed_work adv_instance_expire;
619 struct idr adv_monitors_idr;
620 unsigned int adv_monitors_cnt;
624 struct delayed_work rpa_expired;
627 struct delayed_work mesh_send_done;
630 INTERLEAVE_SCAN_NONE,
631 INTERLEAVE_SCAN_NO_FILTER,
632 INTERLEAVE_SCAN_ALLOWLIST
633 } interleave_scan_state;
635 struct delayed_work interleave_scan;
637 struct list_head monitored_devices;
638 bool advmon_pend_notify;
640 #if IS_ENABLED(CONFIG_BT_LEDS)
641 struct led_trigger *power_led;
644 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
647 bool msft_curve_validity;
650 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
652 bool aosp_quality_report;
655 int (*open)(struct hci_dev *hdev);
656 int (*close)(struct hci_dev *hdev);
657 int (*flush)(struct hci_dev *hdev);
658 int (*setup)(struct hci_dev *hdev);
659 int (*shutdown)(struct hci_dev *hdev);
660 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
661 void (*notify)(struct hci_dev *hdev, unsigned int evt);
662 void (*hw_error)(struct hci_dev *hdev, u8 code);
663 int (*post_init)(struct hci_dev *hdev);
664 int (*set_diag)(struct hci_dev *hdev, bool enable);
665 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
666 void (*cmd_timeout)(struct hci_dev *hdev);
667 void (*reset)(struct hci_dev *hdev);
668 bool (*wakeup)(struct hci_dev *hdev);
669 int (*set_quality_report)(struct hci_dev *hdev, bool enable);
670 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path);
671 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type,
672 struct bt_codec *codec, __u8 *vnd_len,
676 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
679 CONN_REASON_PAIR_DEVICE,
680 CONN_REASON_L2CAP_CHAN,
681 CONN_REASON_SCO_CONNECT,
682 CONN_REASON_ISO_CONNECT,
686 struct list_head list;
708 __u8 features[HCI_MAX_PAGES][8];
714 __u8 pending_sec_level;
718 __u32 passkey_notify;
719 __u8 passkey_entered;
723 __u16 auth_payload_timeout;
724 __u16 le_conn_min_interval;
725 __u16 le_conn_max_interval;
726 __u16 le_conn_interval;
727 __u16 le_conn_latency;
728 __u16 le_supv_timeout;
729 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
730 __u8 le_adv_data_len;
731 __u8 le_per_adv_data[HCI_MAX_PER_AD_LENGTH];
732 __u8 le_per_adv_data_len;
738 struct bt_iso_qos iso_qos;
741 enum conn_reasons conn_reason;
744 __u16 clock_accuracy;
746 unsigned long conn_info_timestamp;
754 struct sk_buff_head data_q;
755 struct list_head chan_list;
757 struct delayed_work disc_work;
758 struct delayed_work auto_accept_work;
759 struct delayed_work idle_work;
760 struct delayed_work le_conn_timeout;
761 struct work_struct le_scan_cleanup;
764 struct dentry *debugfs;
766 struct hci_dev *hdev;
770 struct amp_mgr *amp_mgr;
772 struct list_head link_list;
773 struct hci_conn *parent;
774 struct hci_link *link;
776 struct bt_codec codec;
778 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
779 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
780 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
782 void (*cleanup)(struct hci_conn *conn);
786 struct list_head list;
787 struct hci_conn *conn;
791 struct list_head list;
793 struct hci_conn *conn;
794 struct sk_buff_head data_q;
800 struct hci_conn_params {
801 struct list_head list;
802 struct list_head action;
807 u16 conn_min_interval;
808 u16 conn_max_interval;
810 u16 supervision_timeout;
813 HCI_AUTO_CONN_DISABLED,
814 HCI_AUTO_CONN_REPORT,
815 HCI_AUTO_CONN_DIRECT,
816 HCI_AUTO_CONN_ALWAYS,
817 HCI_AUTO_CONN_LINK_LOSS,
818 HCI_AUTO_CONN_EXPLICIT,
821 struct hci_conn *conn;
822 bool explicit_connect;
823 /* Accessed without hdev->lock: */
824 hci_conn_flags_t flags;
828 extern struct list_head hci_dev_list;
829 extern struct list_head hci_cb_list;
830 extern rwlock_t hci_dev_list_lock;
831 extern struct mutex hci_cb_list_lock;
833 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
834 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
835 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
836 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
837 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
838 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
839 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
841 #define hci_dev_clear_volatile_flags(hdev) \
843 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
844 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
845 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
846 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
847 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \
850 #define hci_dev_le_state_simultaneous(hdev) \
851 (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \
852 (hdev->le_states[4] & 0x08) && /* Central */ \
853 (hdev->le_states[4] & 0x40) && /* Peripheral */ \
854 (hdev->le_states[3] & 0x10)) /* Simultaneous */
856 /* ----- HCI interface to upper protocols ----- */
857 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
858 int l2cap_disconn_ind(struct hci_conn *hcon);
859 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
861 #if IS_ENABLED(CONFIG_BT_BREDR)
862 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
863 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
865 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
871 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
876 #if IS_ENABLED(CONFIG_BT_LE)
877 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
878 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
880 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
885 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb,
891 /* ----- Inquiry cache ----- */
892 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
893 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
895 static inline void discovery_init(struct hci_dev *hdev)
897 hdev->discovery.state = DISCOVERY_STOPPED;
898 INIT_LIST_HEAD(&hdev->discovery.all);
899 INIT_LIST_HEAD(&hdev->discovery.unknown);
900 INIT_LIST_HEAD(&hdev->discovery.resolve);
901 hdev->discovery.report_invalid_rssi = true;
902 hdev->discovery.rssi = HCI_RSSI_INVALID;
905 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
907 hdev->discovery.result_filtering = false;
908 hdev->discovery.report_invalid_rssi = true;
909 hdev->discovery.rssi = HCI_RSSI_INVALID;
910 hdev->discovery.uuid_count = 0;
911 kfree(hdev->discovery.uuids);
912 hdev->discovery.uuids = NULL;
913 hdev->discovery.scan_start = 0;
914 hdev->discovery.scan_duration = 0;
917 bool hci_discovery_active(struct hci_dev *hdev);
919 void hci_discovery_set_state(struct hci_dev *hdev, int state);
921 static inline int inquiry_cache_empty(struct hci_dev *hdev)
923 return list_empty(&hdev->discovery.all);
926 static inline long inquiry_cache_age(struct hci_dev *hdev)
928 struct discovery_state *c = &hdev->discovery;
929 return jiffies - c->timestamp;
932 static inline long inquiry_entry_age(struct inquiry_entry *e)
934 return jiffies - e->timestamp;
937 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
939 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
941 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
944 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
945 struct inquiry_entry *ie);
946 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
948 void hci_inquiry_cache_flush(struct hci_dev *hdev);
950 /* ----- HCI Connections ----- */
953 HCI_CONN_REAUTH_PEND,
954 HCI_CONN_ENCRYPT_PEND,
955 HCI_CONN_RSWITCH_PEND,
956 HCI_CONN_MODE_CHANGE_PEND,
957 HCI_CONN_SCO_SETUP_PEND,
958 HCI_CONN_MGMT_CONNECTED,
959 HCI_CONN_SSP_ENABLED,
968 HCI_CONN_STK_ENCRYPT,
969 HCI_CONN_AUTH_INITIATOR,
972 HCI_CONN_PARAM_REMOVAL_PEND,
973 HCI_CONN_NEW_LINK_KEY,
975 HCI_CONN_AUTH_FAILURE,
979 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
981 struct hci_dev *hdev = conn->hdev;
982 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
983 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
986 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
988 struct hci_dev *hdev = conn->hdev;
989 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
990 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
993 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
995 struct hci_conn_hash *h = &hdev->conn_hash;
996 list_add_tail_rcu(&c->list, &h->list);
1006 if (c->role == HCI_ROLE_SLAVE)
1007 h->le_num_peripheral++;
1019 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
1021 struct hci_conn_hash *h = &hdev->conn_hash;
1023 list_del_rcu(&c->list);
1035 if (c->role == HCI_ROLE_SLAVE)
1036 h->le_num_peripheral--;
1048 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
1050 struct hci_conn_hash *h = &hdev->conn_hash;
1068 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
1070 struct hci_conn_hash *c = &hdev->conn_hash;
1072 return c->acl_num + c->amp_num + c->sco_num + c->le_num + c->iso_num;
1075 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
1077 struct hci_conn_hash *h = &hdev->conn_hash;
1079 __u8 type = INVALID_LINK;
1083 list_for_each_entry_rcu(c, &h->list, list) {
1084 if (c->handle == handle) {
1095 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev,
1099 struct hci_conn_hash *h = &hdev->conn_hash;
1104 list_for_each_entry_rcu(c, &h->list, list) {
1105 if (bacmp(&c->dst, ba) || c->type != ISO_LINK)
1108 if (c->iso_qos.bcast.big == big && c->iso_qos.bcast.bis == bis) {
1118 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
1121 struct hci_conn_hash *h = &hdev->conn_hash;
1126 list_for_each_entry_rcu(c, &h->list, list) {
1127 if (c->handle == handle) {
1137 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
1138 __u8 type, bdaddr_t *ba)
1140 struct hci_conn_hash *h = &hdev->conn_hash;
1145 list_for_each_entry_rcu(c, &h->list, list) {
1146 if (c->type == type && !bacmp(&c->dst, ba)) {
1157 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
1161 struct hci_conn_hash *h = &hdev->conn_hash;
1166 list_for_each_entry_rcu(c, &h->list, list) {
1167 if (c->type != LE_LINK)
1170 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1181 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev,
1187 struct hci_conn_hash *h = &hdev->conn_hash;
1192 list_for_each_entry_rcu(c, &h->list, list) {
1193 if (c->type != ISO_LINK)
1196 /* Match CIG ID if set */
1197 if (cig != BT_ISO_QOS_CIG_UNSET && cig != c->iso_qos.ucast.cig)
1200 /* Match CIS ID if set */
1201 if (id != BT_ISO_QOS_CIS_UNSET && id != c->iso_qos.ucast.cis)
1204 /* Match destination address if set */
1205 if (!ba || (ba_type == c->dst_type && !bacmp(&c->dst, ba))) {
1216 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev,
1219 struct hci_conn_hash *h = &hdev->conn_hash;
1224 list_for_each_entry_rcu(c, &h->list, list) {
1225 if (c->type != ISO_LINK)
1228 if (handle == c->iso_qos.ucast.cig) {
1239 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev,
1242 struct hci_conn_hash *h = &hdev->conn_hash;
1247 list_for_each_entry_rcu(c, &h->list, list) {
1248 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK)
1251 if (handle == c->iso_qos.bcast.big) {
1262 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1263 __u8 type, __u16 state)
1265 struct hci_conn_hash *h = &hdev->conn_hash;
1270 list_for_each_entry_rcu(c, &h->list, list) {
1271 if (c->type == type && c->state == state) {
1282 typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data);
1283 static inline void hci_conn_hash_list_state(struct hci_dev *hdev,
1284 hci_conn_func_t func, __u8 type,
1285 __u16 state, void *data)
1287 struct hci_conn_hash *h = &hdev->conn_hash;
1295 list_for_each_entry_rcu(c, &h->list, list) {
1296 if (c->type == type && c->state == state)
1303 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1305 struct hci_conn_hash *h = &hdev->conn_hash;
1310 list_for_each_entry_rcu(c, &h->list, list) {
1311 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1312 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1323 int hci_disconnect(struct hci_conn *conn, __u8 reason);
1324 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1325 void hci_sco_setup(struct hci_conn *conn, __u8 status);
1326 bool hci_iso_setup_path(struct hci_conn *conn);
1327 int hci_le_create_cis(struct hci_conn *conn);
1329 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1331 void hci_conn_del(struct hci_conn *conn);
1332 void hci_conn_hash_flush(struct hci_dev *hdev);
1333 void hci_conn_check_pending(struct hci_dev *hdev);
1335 struct hci_chan *hci_chan_create(struct hci_conn *conn);
1336 void hci_chan_del(struct hci_chan *chan);
1337 void hci_chan_list_flush(struct hci_conn *conn);
1338 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1340 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1341 u8 dst_type, u8 sec_level,
1343 enum conn_reasons conn_reason);
1344 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1345 u8 dst_type, bool dst_resolved, u8 sec_level,
1346 u16 conn_timeout, u8 role);
1347 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1348 u8 sec_level, u8 auth_type,
1349 enum conn_reasons conn_reason);
1350 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1351 __u16 setting, struct bt_codec *codec);
1352 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
1353 __u8 dst_type, struct bt_iso_qos *qos);
1354 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
1355 __u8 dst_type, struct bt_iso_qos *qos);
1356 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
1357 __u8 dst_type, struct bt_iso_qos *qos,
1358 __u8 data_len, __u8 *data);
1359 int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type,
1360 __u8 sid, struct bt_iso_qos *qos);
1361 int hci_le_big_create_sync(struct hci_dev *hdev, struct bt_iso_qos *qos,
1362 __u16 sync_handle, __u8 num_bis, __u8 bis[]);
1363 int hci_conn_check_link_mode(struct hci_conn *conn);
1364 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1365 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1367 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1369 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1371 void hci_conn_failed(struct hci_conn *conn, u8 status);
1374 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1375 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1376 * working or anything else. They just guarantee that the object is available
1377 * and can be dereferenced. So you can use its locks, local variables and any
1378 * other constant data.
1379 * Before accessing runtime data, you _must_ lock the object and then check that
1380 * it is still running. As soon as you release the locks, the connection might
1381 * get dropped, though.
1383 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1384 * how long the underlying connection is held. So every channel that runs on the
1385 * hci_conn object calls this to prevent the connection from disappearing. As
1386 * long as you hold a device, you must also guarantee that you have a valid
1387 * reference to the device via hci_conn_get() (or the initial reference from
1389 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1390 * break because nobody cares for that. But this means, we cannot use
1391 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1394 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1396 get_device(&conn->dev);
1400 static inline void hci_conn_put(struct hci_conn *conn)
1402 put_device(&conn->dev);
1405 static inline struct hci_conn *hci_conn_hold(struct hci_conn *conn)
1407 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1409 atomic_inc(&conn->refcnt);
1410 cancel_delayed_work(&conn->disc_work);
1415 static inline void hci_conn_drop(struct hci_conn *conn)
1417 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1419 if (atomic_dec_and_test(&conn->refcnt)) {
1420 unsigned long timeo;
1422 switch (conn->type) {
1425 cancel_delayed_work(&conn->idle_work);
1426 if (conn->state == BT_CONNECTED) {
1427 timeo = conn->disc_timeout;
1436 timeo = conn->disc_timeout;
1444 cancel_delayed_work(&conn->disc_work);
1445 queue_delayed_work(conn->hdev->workqueue,
1446 &conn->disc_work, timeo);
1450 /* ----- HCI Devices ----- */
1451 static inline void hci_dev_put(struct hci_dev *d)
1453 BT_DBG("%s orig refcnt %d", d->name,
1454 kref_read(&d->dev.kobj.kref));
1456 put_device(&d->dev);
1459 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1461 BT_DBG("%s orig refcnt %d", d->name,
1462 kref_read(&d->dev.kobj.kref));
1464 get_device(&d->dev);
1468 #define hci_dev_lock(d) mutex_lock(&d->lock)
1469 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
1471 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1472 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1474 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1476 return dev_get_drvdata(&hdev->dev);
1479 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1481 dev_set_drvdata(&hdev->dev, data);
1484 static inline void *hci_get_priv(struct hci_dev *hdev)
1486 return (char *)hdev + sizeof(*hdev);
1489 struct hci_dev *hci_dev_get(int index);
1490 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1492 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);
1494 static inline struct hci_dev *hci_alloc_dev(void)
1496 return hci_alloc_dev_priv(0);
1499 void hci_free_dev(struct hci_dev *hdev);
1500 int hci_register_dev(struct hci_dev *hdev);
1501 void hci_unregister_dev(struct hci_dev *hdev);
1502 void hci_release_dev(struct hci_dev *hdev);
1503 int hci_register_suspend_notifier(struct hci_dev *hdev);
1504 int hci_unregister_suspend_notifier(struct hci_dev *hdev);
1505 int hci_suspend_dev(struct hci_dev *hdev);
1506 int hci_resume_dev(struct hci_dev *hdev);
1507 int hci_reset_dev(struct hci_dev *hdev);
1508 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1509 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1510 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1511 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1513 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1515 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
1516 hdev->msft_opcode = opcode;
1520 static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1522 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
1523 hdev->aosp_capable = true;
1527 static inline void hci_devcd_setup(struct hci_dev *hdev)
1529 #ifdef CONFIG_DEV_COREDUMP
1530 INIT_WORK(&hdev->dump.dump_rx, hci_devcd_rx);
1531 INIT_DELAYED_WORK(&hdev->dump.dump_timeout, hci_devcd_timeout);
1532 skb_queue_head_init(&hdev->dump.dump_q);
1536 int hci_dev_open(__u16 dev);
1537 int hci_dev_close(__u16 dev);
1538 int hci_dev_do_close(struct hci_dev *hdev);
1539 int hci_dev_reset(__u16 dev);
1540 int hci_dev_reset_stat(__u16 dev);
1541 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1542 int hci_get_dev_list(void __user *arg);
1543 int hci_get_dev_info(void __user *arg);
1544 int hci_get_conn_list(void __user *arg);
1545 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1546 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1547 int hci_inquiry(void __user *arg);
1549 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1550 bdaddr_t *bdaddr, u8 type);
1551 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1552 struct list_head *list, bdaddr_t *bdaddr,
1554 struct bdaddr_list_with_flags *
1555 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1557 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1558 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1559 u8 type, u8 *peer_irk, u8 *local_irk);
1560 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1561 u8 type, u32 flags);
1562 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1563 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1565 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1567 void hci_bdaddr_list_clear(struct list_head *list);
1569 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1570 bdaddr_t *addr, u8 addr_type);
1571 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1572 bdaddr_t *addr, u8 addr_type);
1573 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1574 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1575 void hci_conn_params_free(struct hci_conn_params *param);
1577 void hci_pend_le_list_del_init(struct hci_conn_params *param);
1578 void hci_pend_le_list_add(struct hci_conn_params *param,
1579 struct list_head *list);
1580 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1584 void hci_uuids_clear(struct hci_dev *hdev);
1586 void hci_link_keys_clear(struct hci_dev *hdev);
1587 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1588 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1589 bdaddr_t *bdaddr, u8 *val, u8 type,
1590 u8 pin_len, bool *persistent);
1591 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1592 u8 addr_type, u8 type, u8 authenticated,
1593 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1594 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1595 u8 addr_type, u8 role);
1596 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1597 void hci_smp_ltks_clear(struct hci_dev *hdev);
1598 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1600 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1601 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1603 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1604 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1605 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1606 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1607 void hci_blocked_keys_clear(struct hci_dev *hdev);
1608 void hci_smp_irks_clear(struct hci_dev *hdev);
1610 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1612 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1613 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1614 bdaddr_t *bdaddr, u8 bdaddr_type);
1615 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1616 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1617 u8 *hash256, u8 *rand256);
1618 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1621 void hci_adv_instances_clear(struct hci_dev *hdev);
1622 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1623 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1624 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance,
1625 u32 flags, u16 adv_data_len, u8 *adv_data,
1626 u16 scan_rsp_len, u8 *scan_rsp_data,
1627 u16 timeout, u16 duration, s8 tx_power,
1628 u32 min_interval, u32 max_interval,
1630 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance,
1631 u32 flags, u8 data_len, u8 *data,
1632 u32 min_interval, u32 max_interval);
1633 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1634 u16 adv_data_len, u8 *adv_data,
1635 u16 scan_rsp_len, u8 *scan_rsp_data);
1636 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1637 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1638 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance);
1639 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance);
1641 void hci_adv_monitors_clear(struct hci_dev *hdev);
1642 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1643 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1644 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle);
1645 int hci_remove_all_adv_monitor(struct hci_dev *hdev);
1646 bool hci_is_adv_monitoring(struct hci_dev *hdev);
1647 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1649 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1651 void hci_init_sysfs(struct hci_dev *hdev);
1652 void hci_conn_init_sysfs(struct hci_conn *conn);
1653 void hci_conn_add_sysfs(struct hci_conn *conn);
1654 void hci_conn_del_sysfs(struct hci_conn *conn);
1656 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1657 #define GET_HCIDEV_DEV(hdev) ((hdev)->dev.parent)
1659 /* ----- LMP capabilities ----- */
1660 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1661 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1662 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1663 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1664 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1665 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1666 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1667 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1668 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1669 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1670 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1671 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1672 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1673 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1674 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1675 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1676 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1677 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1678 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1679 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1680 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1681 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1682 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1683 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1685 /* ----- Extended LMP capabilities ----- */
1686 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1687 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1688 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1689 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1690 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1691 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1693 /* ----- Host capabilities ----- */
1694 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1695 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1696 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1697 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1699 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1700 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1701 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1702 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1703 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \
1704 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED))
1705 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \
1708 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1709 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1711 #define le_2m_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_2M))
1713 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1714 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1716 #define le_coded_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_CODED))
1718 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1719 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1721 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1723 /* Use LL Privacy based address resolution if supported */
1724 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \
1725 hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY))
1727 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \
1728 (hdev->commands[39] & 0x04))
1730 /* Use enhanced synchronous connection if command is supported and its quirk
1733 #define enhanced_sync_conn_capable(dev) \
1734 (((dev)->commands[29] & 0x08) && \
1735 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks))
1737 /* Use ext scanning if set ext scan param and ext scan enable is supported */
1738 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1739 ((dev)->commands[37] & 0x40) && \
1740 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks))
1742 /* Use ext create connection if command is supported */
1743 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1745 /* Extended advertising support */
1746 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1748 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789:
1750 * C24: Mandatory if the LE Controller supports Connection State and either
1751 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported
1753 #define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \
1754 ext_adv_capable(dev))
1756 /* Periodic advertising support */
1757 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV))
1759 /* CIS Master/Slave and BIS support */
1760 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev))
1761 #define cis_capable(dev) \
1762 (cis_central_capable(dev) || cis_peripheral_capable(dev))
1763 #define cis_central_capable(dev) \
1764 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL)
1765 #define cis_peripheral_capable(dev) \
1766 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL)
1767 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER)
1769 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \
1770 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks)))
1772 /* ----- HCI protocols ----- */
1773 #define HCI_PROTO_DEFER 0x01
1775 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1776 __u8 type, __u8 *flags)
1780 return l2cap_connect_ind(hdev, bdaddr);
1784 return sco_connect_ind(hdev, bdaddr, flags);
1787 return iso_connect_ind(hdev, bdaddr, flags);
1790 BT_ERR("unknown link type %d", type);
1795 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1797 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1798 return HCI_ERROR_REMOTE_USER_TERM;
1800 return l2cap_disconn_ind(conn);
1803 /* ----- HCI callbacks ----- */
1805 struct list_head list;
1809 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1810 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1811 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1813 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1814 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1817 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1821 mutex_lock(&hci_cb_list_lock);
1822 list_for_each_entry(cb, &hci_cb_list, list) {
1823 if (cb->connect_cfm)
1824 cb->connect_cfm(conn, status);
1826 mutex_unlock(&hci_cb_list_lock);
1828 if (conn->connect_cfm_cb)
1829 conn->connect_cfm_cb(conn, status);
1832 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1836 mutex_lock(&hci_cb_list_lock);
1837 list_for_each_entry(cb, &hci_cb_list, list) {
1838 if (cb->disconn_cfm)
1839 cb->disconn_cfm(conn, reason);
1841 mutex_unlock(&hci_cb_list_lock);
1843 if (conn->disconn_cfm_cb)
1844 conn->disconn_cfm_cb(conn, reason);
1847 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1852 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1855 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1857 mutex_lock(&hci_cb_list_lock);
1858 list_for_each_entry(cb, &hci_cb_list, list) {
1859 if (cb->security_cfm)
1860 cb->security_cfm(conn, status, encrypt);
1862 mutex_unlock(&hci_cb_list_lock);
1864 if (conn->security_cfm_cb)
1865 conn->security_cfm_cb(conn, status);
1868 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
1873 if (conn->state == BT_CONFIG) {
1875 conn->state = BT_CONNECTED;
1877 hci_connect_cfm(conn, status);
1878 hci_conn_drop(conn);
1882 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
1884 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
1890 if (conn->sec_level == BT_SECURITY_SDP)
1891 conn->sec_level = BT_SECURITY_LOW;
1893 if (conn->pending_sec_level > conn->sec_level)
1894 conn->sec_level = conn->pending_sec_level;
1897 mutex_lock(&hci_cb_list_lock);
1898 list_for_each_entry(cb, &hci_cb_list, list) {
1899 if (cb->security_cfm)
1900 cb->security_cfm(conn, status, encrypt);
1902 mutex_unlock(&hci_cb_list_lock);
1904 if (conn->security_cfm_cb)
1905 conn->security_cfm_cb(conn, status);
1908 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1912 mutex_lock(&hci_cb_list_lock);
1913 list_for_each_entry(cb, &hci_cb_list, list) {
1914 if (cb->key_change_cfm)
1915 cb->key_change_cfm(conn, status);
1917 mutex_unlock(&hci_cb_list_lock);
1920 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1925 mutex_lock(&hci_cb_list_lock);
1926 list_for_each_entry(cb, &hci_cb_list, list) {
1927 if (cb->role_switch_cfm)
1928 cb->role_switch_cfm(conn, status, role);
1930 mutex_unlock(&hci_cb_list_lock);
1933 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1935 if (addr_type != ADDR_LE_DEV_RANDOM)
1938 if ((bdaddr->b[5] & 0xc0) == 0x40)
1944 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1946 if (addr_type == ADDR_LE_DEV_PUBLIC)
1949 /* Check for Random Static address type */
1950 if ((addr->b[5] & 0xc0) == 0xc0)
1956 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1957 bdaddr_t *bdaddr, u8 addr_type)
1959 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1962 return hci_find_irk_by_rpa(hdev, bdaddr);
1965 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1970 if (min > max || min < 6 || max > 3200)
1973 if (to_multiplier < 10 || to_multiplier > 3200)
1976 if (max >= to_multiplier * 8)
1979 max_latency = (to_multiplier * 4 / max) - 1;
1980 if (latency > 499 || latency > max_latency)
1986 int hci_register_cb(struct hci_cb *hcb);
1987 int hci_unregister_cb(struct hci_cb *hcb);
1989 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
1992 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1994 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1995 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1996 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb);
1998 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1999 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event);
2001 u32 hci_conn_get_phy(struct hci_conn *conn);
2003 /* ----- HCI Sockets ----- */
2004 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
2005 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
2006 int flag, struct sock *skip_sk);
2007 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
2008 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
2009 void *data, u16 data_len, ktime_t tstamp,
2010 int flag, struct sock *skip_sk);
2012 void hci_sock_dev_event(struct hci_dev *hdev, int event);
2014 #define HCI_MGMT_VAR_LEN BIT(0)
2015 #define HCI_MGMT_NO_HDEV BIT(1)
2016 #define HCI_MGMT_UNTRUSTED BIT(2)
2017 #define HCI_MGMT_UNCONFIGURED BIT(3)
2018 #define HCI_MGMT_HDEV_OPTIONAL BIT(4)
2020 struct hci_mgmt_handler {
2021 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
2024 unsigned long flags;
2027 struct hci_mgmt_chan {
2028 struct list_head list;
2029 unsigned short channel;
2030 size_t handler_count;
2031 const struct hci_mgmt_handler *handlers;
2032 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
2035 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
2036 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
2038 /* Management interface */
2039 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
2040 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
2041 BIT(BDADDR_LE_RANDOM))
2042 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
2043 BIT(BDADDR_LE_PUBLIC) | \
2044 BIT(BDADDR_LE_RANDOM))
2046 /* These LE scan and inquiry parameters were chosen according to LE General
2047 * Discovery Procedure specification.
2049 #define DISCOV_LE_SCAN_WIN 0x12
2050 #define DISCOV_LE_SCAN_INT 0x12
2051 #define DISCOV_LE_TIMEOUT 10240 /* msec */
2052 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
2053 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
2054 #define DISCOV_BREDR_INQUIRY_LEN 0x08
2055 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
2056 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */
2057 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */
2058 #define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */
2059 #define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */
2060 #define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */
2061 #define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */
2062 #define INTERVAL_TO_MS(x) (((x) * 10) / 0x10)
2064 #define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */
2066 void mgmt_fill_version_info(void *ver);
2067 int mgmt_new_settings(struct hci_dev *hdev);
2068 void mgmt_index_added(struct hci_dev *hdev);
2069 void mgmt_index_removed(struct hci_dev *hdev);
2070 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
2071 void mgmt_power_on(struct hci_dev *hdev, int err);
2072 void __mgmt_power_off(struct hci_dev *hdev);
2073 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
2075 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
2076 u8 *name, u8 name_len);
2077 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
2078 u8 link_type, u8 addr_type, u8 reason,
2079 bool mgmt_connected);
2080 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
2081 u8 link_type, u8 addr_type, u8 status);
2082 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2083 u8 addr_type, u8 status);
2084 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
2085 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2087 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2089 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2090 u8 link_type, u8 addr_type, u32 value,
2092 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2093 u8 link_type, u8 addr_type, u8 status);
2094 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2095 u8 link_type, u8 addr_type, u8 status);
2096 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2097 u8 link_type, u8 addr_type);
2098 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2099 u8 link_type, u8 addr_type, u8 status);
2100 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2101 u8 link_type, u8 addr_type, u8 status);
2102 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
2103 u8 link_type, u8 addr_type, u32 passkey,
2105 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
2106 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
2107 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
2109 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
2110 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
2111 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
2112 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2113 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
2114 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len,
2116 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2117 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
2118 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
2119 void mgmt_suspending(struct hci_dev *hdev, u8 state);
2120 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
2122 bool mgmt_powering_down(struct hci_dev *hdev);
2123 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
2124 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
2125 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
2127 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
2128 u8 bdaddr_type, u8 store_hint, u16 min_interval,
2129 u16 max_interval, u16 latency, u16 timeout);
2130 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
2131 bool mgmt_get_connectable(struct hci_dev *hdev);
2132 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
2133 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
2135 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
2137 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle);
2138 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
2139 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle,
2140 bdaddr_t *bdaddr, u8 addr_type);
2142 int hci_abort_conn(struct hci_conn *conn, u8 reason);
2143 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
2145 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
2146 __u8 ltk[16], __u8 key_size);
2148 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
2151 #define SCO_AIRMODE_MASK 0x0003
2152 #define SCO_AIRMODE_CVSD 0x0000
2153 #define SCO_AIRMODE_TRANSP 0x0003
2155 #define LOCAL_CODEC_ACL_MASK BIT(0)
2156 #define LOCAL_CODEC_SCO_MASK BIT(1)
2158 #define TRANSPORT_TYPE_MAX 0x04
2160 #endif /* __HCI_CORE_H */