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_sync.h>
34 #include <net/bluetooth/hci_sock.h>
37 #define HCI_PRIO_MAX 7
39 /* HCI maximum id value */
40 #define HCI_MAX_ID 10000
42 /* HCI Core structures */
46 __u8 pscan_period_mode;
54 struct inquiry_entry {
55 struct list_head all; /* inq_cache.all */
56 struct list_head list; /* unknown or resolve */
64 struct inquiry_data data;
67 struct discovery_state {
76 struct list_head all; /* All devices found during inquiry */
77 struct list_head unknown; /* Name state not known */
78 struct list_head resolve; /* Name needs to be resolved */
80 bdaddr_t last_adv_addr;
81 u8 last_adv_addr_type;
84 u8 last_adv_data[HCI_MAX_AD_LENGTH];
86 bool report_invalid_rssi;
87 bool result_filtering;
92 unsigned long scan_start;
93 unsigned long scan_duration;
94 unsigned long name_resolve_timeout;
97 #define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
100 SUSPEND_PAUSE_DISCOVERY,
101 SUSPEND_UNPAUSE_DISCOVERY,
103 SUSPEND_PAUSE_ADVERTISING,
104 SUSPEND_UNPAUSE_ADVERTISING,
106 SUSPEND_SCAN_DISABLE,
108 SUSPEND_DISCONNECTING,
110 SUSPEND_POWERING_DOWN,
112 SUSPEND_PREPARE_NOTIFIER,
114 SUSPEND_SET_ADV_FILTER,
118 enum suspended_state {
120 BT_SUSPEND_DISCONNECT,
121 BT_SUSPEND_CONFIGURE_WAKE,
124 struct hci_conn_hash {
125 struct list_head list;
126 unsigned int acl_num;
127 unsigned int amp_num;
128 unsigned int sco_num;
129 unsigned int iso_num;
131 unsigned int le_num_peripheral;
135 struct list_head list;
141 struct list_head list;
148 struct hci_codec_caps caps[];
151 struct bdaddr_list_with_irk {
152 struct list_head list;
159 /* Bitmask of connection flags */
160 enum hci_conn_flags {
161 HCI_CONN_FLAG_REMOTE_WAKEUP = 1,
162 HCI_CONN_FLAG_DEVICE_PRIVACY = 2,
164 typedef u8 hci_conn_flags_t;
166 struct bdaddr_list_with_flags {
167 struct list_head list;
170 hci_conn_flags_t flags;
174 struct list_head list;
181 struct list_head list;
195 struct list_head list;
208 struct list_head list;
217 struct list_head list;
221 u8 val[HCI_LINK_KEY_SIZE];
226 struct list_head list;
237 struct list_head list;
245 __u16 remaining_time;
248 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
249 bool adv_data_changed;
251 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
252 bool scan_rsp_changed;
253 __u16 per_adv_data_len;
254 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
258 bdaddr_t random_addr;
260 struct delayed_work rpa_expired_cb;
263 #define HCI_MAX_ADV_INSTANCES 5
264 #define HCI_DEFAULT_ADV_DURATION 2
266 #define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F
268 #define DATA_CMP(_d1, _l1, _d2, _l2) \
269 (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2)
271 #define ADV_DATA_CMP(_adv, _data, _len) \
272 DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len)
274 #define SCAN_RSP_CMP(_adv, _data, _len) \
275 DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len)
277 struct monitored_device {
278 struct list_head list;
287 struct list_head list;
291 __u8 value[HCI_MAX_AD_LENGTH];
294 struct adv_rssi_thresholds {
297 __u16 low_threshold_timeout;
298 __u16 high_threshold_timeout;
299 __u8 sampling_period;
303 struct list_head patterns;
304 struct adv_rssi_thresholds rssi;
308 ADV_MONITOR_STATE_NOT_REGISTERED,
309 ADV_MONITOR_STATE_REGISTERED,
310 ADV_MONITOR_STATE_OFFLOADED
314 #define HCI_MIN_ADV_MONITOR_HANDLE 1
315 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32
316 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16
317 #define HCI_ADV_MONITOR_EXT_NONE 1
318 #define HCI_ADV_MONITOR_EXT_MSFT 2
320 #define HCI_MAX_SHORT_NAME_LENGTH 10
322 #define HCI_CONN_HANDLE_UNSET 0xffff
323 #define HCI_CONN_HANDLE_MAX 0x0eff
325 /* Min encryption key size to match with SMP */
326 #define HCI_MIN_ENC_KEY_SIZE 7
328 /* Default LE RPA expiry time, 15 minutes */
329 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
331 /* Default min/max age of connection information (1s/3s) */
332 #define DEFAULT_CONN_INFO_MIN_AGE 1000
333 #define DEFAULT_CONN_INFO_MAX_AGE 3000
334 /* Default authenticated payload timeout 30s */
335 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8
342 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
345 #define HCI_MAX_PAGES 3
348 struct list_head list;
358 bdaddr_t public_addr;
359 bdaddr_t random_addr;
360 bdaddr_t static_addr;
362 __u8 dev_name[HCI_MAX_NAME_LENGTH];
363 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
364 __u8 eir[HCI_MAX_EIR_LENGTH];
370 __u8 features[HCI_MAX_PAGES][8];
372 __u8 le_accept_list_size;
373 __u8 le_resolv_list_size;
374 __u8 le_num_of_adv_sets;
376 __u8 mesh_ad_types[16];
386 __u16 stored_max_keys;
387 __u16 stored_num_keys;
390 __u8 err_data_reporting;
391 __u16 page_scan_interval;
392 __u16 page_scan_window;
394 __u8 le_adv_channel_map;
395 __u16 le_adv_min_interval;
396 __u16 le_adv_max_interval;
398 __u16 le_scan_interval;
399 __u16 le_scan_window;
400 __u16 le_scan_int_suspend;
401 __u16 le_scan_window_suspend;
402 __u16 le_scan_int_discovery;
403 __u16 le_scan_window_discovery;
404 __u16 le_scan_int_adv_monitor;
405 __u16 le_scan_window_adv_monitor;
406 __u16 le_scan_int_connect;
407 __u16 le_scan_window_connect;
408 __u16 le_conn_min_interval;
409 __u16 le_conn_max_interval;
410 __u16 le_conn_latency;
411 __u16 le_supv_timeout;
413 __u16 le_def_tx_time;
415 __u16 le_max_tx_time;
417 __u16 le_max_rx_time;
418 __u8 le_max_key_size;
419 __u8 le_min_key_size;
420 __u16 discov_interleaved_timeout;
421 __u16 conn_info_min_age;
422 __u16 conn_info_max_age;
423 __u16 auth_payload_timeout;
424 __u8 min_enc_key_size;
425 __u8 max_enc_key_size;
430 __u16 advmon_allowlist_duration;
431 __u16 advmon_no_filter_duration;
432 __u8 enable_advmon_interleave_scan;
439 __u8 def_page_scan_type;
440 __u16 def_page_scan_int;
441 __u16 def_page_scan_window;
442 __u8 def_inq_scan_type;
443 __u16 def_inq_scan_int;
444 __u16 def_inq_scan_window;
446 __u16 def_page_timeout;
447 __u16 def_multi_adv_rotation_duration;
448 __u16 def_le_autoconnect_timeout;
449 __s8 min_le_tx_power;
450 __s8 max_le_tx_power;
458 __u16 sniff_min_interval;
459 __u16 sniff_max_interval;
464 __u32 amp_min_latency;
468 __u16 amp_assoc_size;
469 __u32 amp_max_flush_to;
470 __u32 amp_be_flush_to;
472 struct amp_assoc loc_assoc;
476 unsigned int auto_accept_delay;
478 unsigned long quirks;
481 unsigned int acl_cnt;
482 unsigned int sco_cnt;
484 unsigned int iso_cnt;
486 unsigned int acl_mtu;
487 unsigned int sco_mtu;
489 unsigned int iso_mtu;
490 unsigned int acl_pkts;
491 unsigned int sco_pkts;
492 unsigned int le_pkts;
493 unsigned int iso_pkts;
500 unsigned long acl_last_tx;
501 unsigned long sco_last_tx;
502 unsigned long le_last_tx;
507 struct workqueue_struct *workqueue;
508 struct workqueue_struct *req_workqueue;
510 struct work_struct power_on;
511 struct delayed_work power_off;
512 struct work_struct error_reset;
513 struct work_struct cmd_sync_work;
514 struct list_head cmd_sync_work_list;
515 struct mutex cmd_sync_work_lock;
516 struct mutex unregister_lock;
517 struct work_struct cmd_sync_cancel_work;
518 struct work_struct reenable_adv_work;
520 __u16 discov_timeout;
521 struct delayed_work discov_off;
523 struct delayed_work service_cache;
525 struct delayed_work cmd_timer;
526 struct delayed_work ncmd_timer;
528 struct work_struct rx_work;
529 struct work_struct cmd_work;
530 struct work_struct tx_work;
532 struct delayed_work le_scan_disable;
533 struct delayed_work le_scan_restart;
535 struct sk_buff_head rx_q;
536 struct sk_buff_head raw_q;
537 struct sk_buff_head cmd_q;
539 struct sk_buff *sent_cmd;
540 struct sk_buff *recv_event;
542 struct mutex req_lock;
543 wait_queue_head_t req_wait_q;
546 struct sk_buff *req_skb;
549 void *smp_bredr_data;
551 struct discovery_state discovery;
553 int discovery_old_state;
554 bool discovery_paused;
555 int advertising_old_state;
556 bool advertising_paused;
558 struct notifier_block suspend_notifier;
559 enum suspended_state suspend_state_next;
560 enum suspended_state suspend_state;
561 bool scanning_paused;
567 struct hci_conn_hash conn_hash;
569 struct list_head mesh_pending;
570 struct list_head mgmt_pending;
571 struct list_head reject_list;
572 struct list_head accept_list;
573 struct list_head uuids;
574 struct list_head link_keys;
575 struct list_head long_term_keys;
576 struct list_head identity_resolving_keys;
577 struct list_head remote_oob_data;
578 struct list_head le_accept_list;
579 struct list_head le_resolv_list;
580 struct list_head le_conn_params;
581 struct list_head pend_le_conns;
582 struct list_head pend_le_reports;
583 struct list_head blocked_keys;
584 struct list_head local_codecs;
586 struct hci_dev_stats stat;
592 struct dentry *debugfs;
596 struct rfkill *rfkill;
598 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
599 hci_conn_flags_t conn_flags;
602 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
604 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
605 __u8 scan_rsp_data_len;
606 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
607 __u8 per_adv_data_len;
609 struct list_head adv_instances;
610 unsigned int adv_instance_cnt;
611 __u8 cur_adv_instance;
612 __u16 adv_instance_timeout;
613 struct delayed_work adv_instance_expire;
615 struct idr adv_monitors_idr;
616 unsigned int adv_monitors_cnt;
620 struct delayed_work rpa_expired;
623 struct delayed_work mesh_send_done;
626 INTERLEAVE_SCAN_NONE,
627 INTERLEAVE_SCAN_NO_FILTER,
628 INTERLEAVE_SCAN_ALLOWLIST
629 } interleave_scan_state;
631 struct delayed_work interleave_scan;
633 struct list_head monitored_devices;
634 bool advmon_pend_notify;
636 #if IS_ENABLED(CONFIG_BT_LEDS)
637 struct led_trigger *power_led;
640 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
643 bool msft_curve_validity;
646 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
648 bool aosp_quality_report;
652 __u8 adv_filter_policy;
656 int (*open)(struct hci_dev *hdev);
657 int (*close)(struct hci_dev *hdev);
658 int (*flush)(struct hci_dev *hdev);
659 int (*setup)(struct hci_dev *hdev);
660 int (*shutdown)(struct hci_dev *hdev);
661 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
662 void (*notify)(struct hci_dev *hdev, unsigned int evt);
663 void (*hw_error)(struct hci_dev *hdev, u8 code);
664 int (*post_init)(struct hci_dev *hdev);
665 int (*set_diag)(struct hci_dev *hdev, bool enable);
666 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
667 void (*cmd_timeout)(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;
775 struct hci_conn *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;
788 struct hci_conn *conn;
789 struct sk_buff_head data_q;
795 struct hci_conn_params {
796 struct list_head list;
797 struct list_head action;
802 u16 conn_min_interval;
803 u16 conn_max_interval;
805 u16 supervision_timeout;
808 HCI_AUTO_CONN_DISABLED,
809 HCI_AUTO_CONN_REPORT,
810 HCI_AUTO_CONN_DIRECT,
811 HCI_AUTO_CONN_ALWAYS,
812 HCI_AUTO_CONN_LINK_LOSS,
813 HCI_AUTO_CONN_EXPLICIT,
816 struct hci_conn *conn;
817 bool explicit_connect;
818 hci_conn_flags_t flags;
822 extern struct list_head hci_dev_list;
823 extern struct list_head hci_cb_list;
824 extern rwlock_t hci_dev_list_lock;
825 extern struct mutex hci_cb_list_lock;
827 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
828 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
829 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
830 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
831 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
832 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
833 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
835 #define hci_dev_clear_volatile_flags(hdev) \
837 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
838 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
839 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
840 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
841 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \
844 #define hci_dev_le_state_simultaneous(hdev) \
845 (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \
846 (hdev->le_states[4] & 0x08) && /* Central */ \
847 (hdev->le_states[4] & 0x40) && /* Peripheral */ \
848 (hdev->le_states[3] & 0x10)) /* Simultaneous */
850 /* ----- HCI interface to upper protocols ----- */
851 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
852 int l2cap_disconn_ind(struct hci_conn *hcon);
853 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
855 #if IS_ENABLED(CONFIG_BT_BREDR)
856 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
857 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
859 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
865 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
870 #if IS_ENABLED(CONFIG_BT_LE)
871 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
872 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
874 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
879 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb,
885 /* ----- Inquiry cache ----- */
886 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
887 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
889 static inline void discovery_init(struct hci_dev *hdev)
891 hdev->discovery.state = DISCOVERY_STOPPED;
892 INIT_LIST_HEAD(&hdev->discovery.all);
893 INIT_LIST_HEAD(&hdev->discovery.unknown);
894 INIT_LIST_HEAD(&hdev->discovery.resolve);
895 hdev->discovery.report_invalid_rssi = true;
896 hdev->discovery.rssi = HCI_RSSI_INVALID;
899 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
901 hdev->discovery.result_filtering = false;
902 hdev->discovery.report_invalid_rssi = true;
903 hdev->discovery.rssi = HCI_RSSI_INVALID;
904 hdev->discovery.uuid_count = 0;
905 kfree(hdev->discovery.uuids);
906 hdev->discovery.uuids = NULL;
907 hdev->discovery.scan_start = 0;
908 hdev->discovery.scan_duration = 0;
911 bool hci_discovery_active(struct hci_dev *hdev);
913 void hci_discovery_set_state(struct hci_dev *hdev, int state);
915 static inline int inquiry_cache_empty(struct hci_dev *hdev)
917 return list_empty(&hdev->discovery.all);
920 static inline long inquiry_cache_age(struct hci_dev *hdev)
922 struct discovery_state *c = &hdev->discovery;
923 return jiffies - c->timestamp;
926 static inline long inquiry_entry_age(struct inquiry_entry *e)
928 return jiffies - e->timestamp;
931 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
933 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
935 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
938 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
939 struct inquiry_entry *ie);
940 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
942 void hci_inquiry_cache_flush(struct hci_dev *hdev);
944 /* ----- HCI Connections ----- */
947 HCI_CONN_REAUTH_PEND,
948 HCI_CONN_ENCRYPT_PEND,
949 HCI_CONN_RSWITCH_PEND,
950 HCI_CONN_MODE_CHANGE_PEND,
951 HCI_CONN_SCO_SETUP_PEND,
952 HCI_CONN_MGMT_CONNECTED,
953 HCI_CONN_SSP_ENABLED,
962 HCI_CONN_STK_ENCRYPT,
963 HCI_CONN_AUTH_INITIATOR,
966 HCI_CONN_PARAM_REMOVAL_PEND,
967 HCI_CONN_NEW_LINK_KEY,
969 HCI_CONN_AUTH_FAILURE,
973 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
975 struct hci_dev *hdev = conn->hdev;
976 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
977 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
980 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
982 struct hci_dev *hdev = conn->hdev;
983 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
984 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
987 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
989 struct hci_conn_hash *h = &hdev->conn_hash;
990 list_add_rcu(&c->list, &h->list);
1000 if (c->role == HCI_ROLE_SLAVE)
1001 h->le_num_peripheral++;
1013 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
1015 struct hci_conn_hash *h = &hdev->conn_hash;
1017 list_del_rcu(&c->list);
1029 if (c->role == HCI_ROLE_SLAVE)
1030 h->le_num_peripheral--;
1042 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
1044 struct hci_conn_hash *h = &hdev->conn_hash;
1062 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
1064 struct hci_conn_hash *c = &hdev->conn_hash;
1066 return c->acl_num + c->amp_num + c->sco_num + c->le_num + c->iso_num;
1069 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
1071 struct hci_conn_hash *h = &hdev->conn_hash;
1073 __u8 type = INVALID_LINK;
1077 list_for_each_entry_rcu(c, &h->list, list) {
1078 if (c->handle == handle) {
1089 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev,
1093 struct hci_conn_hash *h = &hdev->conn_hash;
1098 list_for_each_entry_rcu(c, &h->list, list) {
1099 if (bacmp(&c->dst, ba) || c->type != ISO_LINK)
1102 if (c->iso_qos.big == big && c->iso_qos.bis == bis) {
1112 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
1115 struct hci_conn_hash *h = &hdev->conn_hash;
1120 list_for_each_entry_rcu(c, &h->list, list) {
1121 if (c->handle == handle) {
1131 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
1132 __u8 type, bdaddr_t *ba)
1134 struct hci_conn_hash *h = &hdev->conn_hash;
1139 list_for_each_entry_rcu(c, &h->list, list) {
1140 if (c->type == type && !bacmp(&c->dst, ba)) {
1151 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
1155 struct hci_conn_hash *h = &hdev->conn_hash;
1160 list_for_each_entry_rcu(c, &h->list, list) {
1161 if (c->type != LE_LINK)
1164 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1175 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev,
1179 struct hci_conn_hash *h = &hdev->conn_hash;
1184 list_for_each_entry_rcu(c, &h->list, list) {
1185 if (c->type != ISO_LINK)
1188 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1199 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev,
1202 struct hci_conn_hash *h = &hdev->conn_hash;
1207 list_for_each_entry_rcu(c, &h->list, list) {
1208 if (c->type != ISO_LINK)
1211 if (handle == c->iso_qos.cig) {
1222 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev,
1225 struct hci_conn_hash *h = &hdev->conn_hash;
1230 list_for_each_entry_rcu(c, &h->list, list) {
1231 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK)
1234 if (handle == c->iso_qos.big) {
1245 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1246 __u8 type, __u16 state)
1248 struct hci_conn_hash *h = &hdev->conn_hash;
1253 list_for_each_entry_rcu(c, &h->list, list) {
1254 if (c->type == type && c->state == state) {
1265 typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data);
1266 static inline void hci_conn_hash_list_state(struct hci_dev *hdev,
1267 hci_conn_func_t func, __u8 type,
1268 __u16 state, void *data)
1270 struct hci_conn_hash *h = &hdev->conn_hash;
1278 list_for_each_entry_rcu(c, &h->list, list) {
1279 if (c->type == type && c->state == state)
1286 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1288 struct hci_conn_hash *h = &hdev->conn_hash;
1293 list_for_each_entry_rcu(c, &h->list, list) {
1294 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1295 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1307 static inline bool hci_conn_rssi_state_set(struct hci_dev *hdev,
1308 __u8 type, bdaddr_t *ba, bool value)
1310 struct hci_conn_hash *h = &hdev->conn_hash;
1315 conn_type = LE_LINK;
1317 conn_type = ACL_LINK;
1321 list_for_each_entry_rcu(c, &h->list, list) {
1322 if (c->type == conn_type && !bacmp(&c->dst, ba)) {
1323 c->rssi_monitored = value;
1333 static inline void hci_conn_rssi_unset_all(struct hci_dev *hdev,
1336 struct hci_conn_hash *h = &hdev->conn_hash;
1341 conn_type = LE_LINK;
1343 conn_type = ACL_LINK;
1346 list_for_each_entry_rcu(c, &h->list, list) {
1347 if (c->type == conn_type)
1348 c->rssi_monitored = false;
1353 static inline int hci_conn_hash_lookup_rssi_count(struct hci_dev *hdev)
1355 struct hci_conn_hash *h = &hdev->conn_hash;
1360 list_for_each_entry_rcu(c, &h->list, list) {
1361 if (c->rssi_monitored == true)
1370 int hci_disconnect(struct hci_conn *conn, __u8 reason);
1371 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1372 void hci_sco_setup(struct hci_conn *conn, __u8 status);
1373 bool hci_iso_setup_path(struct hci_conn *conn);
1374 int hci_le_create_cis(struct hci_conn *conn);
1376 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1378 int hci_conn_del(struct hci_conn *conn);
1379 void hci_conn_hash_flush(struct hci_dev *hdev);
1380 void hci_conn_check_pending(struct hci_dev *hdev);
1382 struct hci_chan *hci_chan_create(struct hci_conn *conn);
1383 void hci_chan_del(struct hci_chan *chan);
1384 void hci_chan_list_flush(struct hci_conn *conn);
1385 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1387 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1388 u8 dst_type, u8 sec_level,
1390 enum conn_reasons conn_reason);
1391 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1392 u8 dst_type, bool dst_resolved, u8 sec_level,
1393 u16 conn_timeout, u8 role);
1394 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1395 u8 sec_level, u8 auth_type,
1396 enum conn_reasons conn_reason);
1397 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1398 __u16 setting, struct bt_codec *codec);
1399 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
1400 __u8 dst_type, struct bt_iso_qos *qos);
1401 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
1402 __u8 dst_type, struct bt_iso_qos *qos);
1403 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
1404 __u8 dst_type, struct bt_iso_qos *qos,
1405 __u8 data_len, __u8 *data);
1406 int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type,
1408 int hci_le_big_create_sync(struct hci_dev *hdev, struct bt_iso_qos *qos,
1409 __u16 sync_handle, __u8 num_bis, __u8 bis[]);
1410 int hci_conn_check_link_mode(struct hci_conn *conn);
1411 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1412 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1414 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1416 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1418 void hci_conn_failed(struct hci_conn *conn, u8 status);
1421 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1422 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1423 * working or anything else. They just guarantee that the object is available
1424 * and can be dereferenced. So you can use its locks, local variables and any
1425 * other constant data.
1426 * Before accessing runtime data, you _must_ lock the object and then check that
1427 * it is still running. As soon as you release the locks, the connection might
1428 * get dropped, though.
1430 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1431 * how long the underlying connection is held. So every channel that runs on the
1432 * hci_conn object calls this to prevent the connection from disappearing. As
1433 * long as you hold a device, you must also guarantee that you have a valid
1434 * reference to the device via hci_conn_get() (or the initial reference from
1436 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1437 * break because nobody cares for that. But this means, we cannot use
1438 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1441 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1443 get_device(&conn->dev);
1447 static inline void hci_conn_put(struct hci_conn *conn)
1449 put_device(&conn->dev);
1452 static inline void hci_conn_hold(struct hci_conn *conn)
1454 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1456 atomic_inc(&conn->refcnt);
1457 cancel_delayed_work(&conn->disc_work);
1460 static inline void hci_conn_drop(struct hci_conn *conn)
1462 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1464 if (atomic_dec_and_test(&conn->refcnt)) {
1465 unsigned long timeo;
1467 switch (conn->type) {
1470 cancel_delayed_work(&conn->idle_work);
1471 if (conn->state == BT_CONNECTED) {
1472 timeo = conn->disc_timeout;
1481 timeo = conn->disc_timeout;
1489 cancel_delayed_work(&conn->disc_work);
1490 queue_delayed_work(conn->hdev->workqueue,
1491 &conn->disc_work, timeo);
1495 /* ----- HCI Devices ----- */
1496 static inline void hci_dev_put(struct hci_dev *d)
1498 BT_DBG("%s orig refcnt %d", d->name,
1499 kref_read(&d->dev.kobj.kref));
1501 put_device(&d->dev);
1504 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1506 BT_DBG("%s orig refcnt %d", d->name,
1507 kref_read(&d->dev.kobj.kref));
1509 get_device(&d->dev);
1513 #define hci_dev_lock(d) mutex_lock(&d->lock)
1514 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
1516 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1517 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1519 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1521 return dev_get_drvdata(&hdev->dev);
1524 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1526 dev_set_drvdata(&hdev->dev, data);
1529 static inline void *hci_get_priv(struct hci_dev *hdev)
1531 return (char *)hdev + sizeof(*hdev);
1534 struct hci_dev *hci_dev_get(int index);
1535 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1537 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);
1539 static inline struct hci_dev *hci_alloc_dev(void)
1541 return hci_alloc_dev_priv(0);
1544 void hci_free_dev(struct hci_dev *hdev);
1545 int hci_register_dev(struct hci_dev *hdev);
1546 void hci_unregister_dev(struct hci_dev *hdev);
1547 void hci_release_dev(struct hci_dev *hdev);
1548 int hci_register_suspend_notifier(struct hci_dev *hdev);
1549 int hci_unregister_suspend_notifier(struct hci_dev *hdev);
1550 int hci_suspend_dev(struct hci_dev *hdev);
1551 int hci_resume_dev(struct hci_dev *hdev);
1552 int hci_reset_dev(struct hci_dev *hdev);
1553 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1554 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1555 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1556 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1558 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1560 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
1561 hdev->msft_opcode = opcode;
1565 static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1567 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
1568 hdev->aosp_capable = true;
1572 int hci_dev_open(__u16 dev);
1573 int hci_dev_close(__u16 dev);
1574 int hci_dev_do_close(struct hci_dev *hdev);
1575 int hci_dev_reset(__u16 dev);
1576 int hci_dev_reset_stat(__u16 dev);
1577 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1578 int hci_get_dev_list(void __user *arg);
1579 int hci_get_dev_info(void __user *arg);
1580 int hci_get_conn_list(void __user *arg);
1581 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1582 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1583 int hci_inquiry(void __user *arg);
1585 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1586 bdaddr_t *bdaddr, u8 type);
1587 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1588 struct list_head *list, bdaddr_t *bdaddr,
1590 struct bdaddr_list_with_flags *
1591 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1593 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1594 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1595 u8 type, u8 *peer_irk, u8 *local_irk);
1596 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1597 u8 type, u32 flags);
1598 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1599 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1601 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1603 void hci_bdaddr_list_clear(struct list_head *list);
1605 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1606 bdaddr_t *addr, u8 addr_type);
1607 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1608 bdaddr_t *addr, u8 addr_type);
1609 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1610 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1612 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1616 void hci_uuids_clear(struct hci_dev *hdev);
1618 void hci_link_keys_clear(struct hci_dev *hdev);
1619 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1620 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1621 bdaddr_t *bdaddr, u8 *val, u8 type,
1622 u8 pin_len, bool *persistent);
1623 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1624 u8 addr_type, u8 type, u8 authenticated,
1625 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1626 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1627 u8 addr_type, u8 role);
1628 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1629 void hci_smp_ltks_clear(struct hci_dev *hdev);
1630 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1632 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1633 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1635 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1636 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1637 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1638 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1639 void hci_blocked_keys_clear(struct hci_dev *hdev);
1640 void hci_smp_irks_clear(struct hci_dev *hdev);
1642 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1644 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1645 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1646 bdaddr_t *bdaddr, u8 bdaddr_type);
1647 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1648 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1649 u8 *hash256, u8 *rand256);
1650 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1653 void hci_adv_instances_clear(struct hci_dev *hdev);
1654 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1655 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1656 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance,
1657 u32 flags, u16 adv_data_len, u8 *adv_data,
1658 u16 scan_rsp_len, u8 *scan_rsp_data,
1659 u16 timeout, u16 duration, s8 tx_power,
1660 u32 min_interval, u32 max_interval,
1662 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance,
1663 u32 flags, u8 data_len, u8 *data,
1664 u32 min_interval, u32 max_interval);
1665 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1666 u16 adv_data_len, u8 *adv_data,
1667 u16 scan_rsp_len, u8 *scan_rsp_data);
1668 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1669 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1670 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance);
1671 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance);
1673 void hci_adv_monitors_clear(struct hci_dev *hdev);
1674 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1675 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1676 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle);
1677 int hci_remove_all_adv_monitor(struct hci_dev *hdev);
1678 bool hci_is_adv_monitoring(struct hci_dev *hdev);
1679 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1681 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1683 void hci_init_sysfs(struct hci_dev *hdev);
1684 void hci_conn_init_sysfs(struct hci_conn *conn);
1685 void hci_conn_add_sysfs(struct hci_conn *conn);
1686 void hci_conn_del_sysfs(struct hci_conn *conn);
1688 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1690 /* ----- LMP capabilities ----- */
1691 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1692 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1693 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1694 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1695 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1696 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1697 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1698 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1699 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1700 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1701 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1702 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1703 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1704 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1705 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1706 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1707 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1708 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1709 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1710 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1711 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1712 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1713 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1714 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1716 /* ----- Extended LMP capabilities ----- */
1717 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1718 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1719 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1720 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1721 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1722 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1724 /* ----- Host capabilities ----- */
1725 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1726 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1727 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1728 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1730 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1731 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1732 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1733 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1734 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \
1735 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED))
1736 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \
1739 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1740 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1742 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1743 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1745 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1746 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1748 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1750 /* Use LL Privacy based address resolution if supported */
1751 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \
1752 hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY))
1754 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \
1755 (hdev->commands[39] & 0x04))
1757 /* Use enhanced synchronous connection if command is supported and its quirk
1760 #define enhanced_sync_conn_capable(dev) \
1761 (((dev)->commands[29] & 0x08) && \
1762 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks))
1764 /* Use ext scanning if set ext scan param and ext scan enable is supported */
1765 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1766 ((dev)->commands[37] & 0x40) && \
1767 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks))
1769 /* Use ext create connection if command is supported */
1770 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1772 /* Extended advertising support */
1773 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1775 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789:
1777 * C24: Mandatory if the LE Controller supports Connection State and either
1778 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported
1780 #define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \
1781 ext_adv_capable(dev))
1783 /* Periodic advertising support */
1784 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV))
1786 /* CIS Master/Slave and BIS support */
1787 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev))
1788 #define cis_capable(dev) \
1789 (cis_central_capable(dev) || cis_peripheral_capable(dev))
1790 #define cis_central_capable(dev) \
1791 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL)
1792 #define cis_peripheral_capable(dev) \
1793 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL)
1794 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER)
1796 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \
1797 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks)))
1799 /* ----- HCI protocols ----- */
1800 #define HCI_PROTO_DEFER 0x01
1802 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1803 __u8 type, __u8 *flags)
1807 return l2cap_connect_ind(hdev, bdaddr);
1811 return sco_connect_ind(hdev, bdaddr, flags);
1814 return iso_connect_ind(hdev, bdaddr, flags);
1817 BT_ERR("unknown link type %d", type);
1822 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1824 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1825 return HCI_ERROR_REMOTE_USER_TERM;
1827 return l2cap_disconn_ind(conn);
1830 /* ----- HCI callbacks ----- */
1832 struct list_head list;
1836 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1837 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1838 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1840 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1841 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1844 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1848 mutex_lock(&hci_cb_list_lock);
1849 list_for_each_entry(cb, &hci_cb_list, list) {
1850 if (cb->connect_cfm)
1851 cb->connect_cfm(conn, status);
1853 mutex_unlock(&hci_cb_list_lock);
1855 if (conn->connect_cfm_cb)
1856 conn->connect_cfm_cb(conn, status);
1859 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1863 mutex_lock(&hci_cb_list_lock);
1864 list_for_each_entry(cb, &hci_cb_list, list) {
1865 if (cb->disconn_cfm)
1866 cb->disconn_cfm(conn, reason);
1868 mutex_unlock(&hci_cb_list_lock);
1870 if (conn->disconn_cfm_cb)
1871 conn->disconn_cfm_cb(conn, reason);
1874 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1879 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1882 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1884 mutex_lock(&hci_cb_list_lock);
1885 list_for_each_entry(cb, &hci_cb_list, list) {
1886 if (cb->security_cfm)
1887 cb->security_cfm(conn, status, encrypt);
1889 mutex_unlock(&hci_cb_list_lock);
1891 if (conn->security_cfm_cb)
1892 conn->security_cfm_cb(conn, status);
1895 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
1900 if (conn->state == BT_CONFIG) {
1902 conn->state = BT_CONNECTED;
1904 hci_connect_cfm(conn, status);
1905 hci_conn_drop(conn);
1909 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
1911 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
1917 if (conn->sec_level == BT_SECURITY_SDP)
1918 conn->sec_level = BT_SECURITY_LOW;
1920 if (conn->pending_sec_level > conn->sec_level)
1921 conn->sec_level = conn->pending_sec_level;
1924 mutex_lock(&hci_cb_list_lock);
1925 list_for_each_entry(cb, &hci_cb_list, list) {
1926 if (cb->security_cfm)
1927 cb->security_cfm(conn, status, encrypt);
1929 mutex_unlock(&hci_cb_list_lock);
1931 if (conn->security_cfm_cb)
1932 conn->security_cfm_cb(conn, status);
1935 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1939 mutex_lock(&hci_cb_list_lock);
1940 list_for_each_entry(cb, &hci_cb_list, list) {
1941 if (cb->key_change_cfm)
1942 cb->key_change_cfm(conn, status);
1944 mutex_unlock(&hci_cb_list_lock);
1947 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1952 mutex_lock(&hci_cb_list_lock);
1953 list_for_each_entry(cb, &hci_cb_list, list) {
1954 if (cb->role_switch_cfm)
1955 cb->role_switch_cfm(conn, status, role);
1957 mutex_unlock(&hci_cb_list_lock);
1960 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1962 if (addr_type != ADDR_LE_DEV_RANDOM)
1965 if ((bdaddr->b[5] & 0xc0) == 0x40)
1971 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1973 if (addr_type == ADDR_LE_DEV_PUBLIC)
1976 /* Check for Random Static address type */
1977 if ((addr->b[5] & 0xc0) == 0xc0)
1983 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1984 bdaddr_t *bdaddr, u8 addr_type)
1986 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1989 return hci_find_irk_by_rpa(hdev, bdaddr);
1992 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1997 if (min > max || min < 6 || max > 3200)
2000 if (to_multiplier < 10 || to_multiplier > 3200)
2003 if (max >= to_multiplier * 8)
2006 max_latency = (to_multiplier * 4 / max) - 1;
2007 if (latency > 499 || latency > max_latency)
2013 int hci_register_cb(struct hci_cb *hcb);
2014 int hci_unregister_cb(struct hci_cb *hcb);
2016 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
2019 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
2021 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
2022 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
2023 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb);
2025 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
2026 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event);
2028 u32 hci_conn_get_phy(struct hci_conn *conn);
2030 /* ----- HCI Sockets ----- */
2031 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
2032 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
2033 int flag, struct sock *skip_sk);
2034 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
2035 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
2036 void *data, u16 data_len, ktime_t tstamp,
2037 int flag, struct sock *skip_sk);
2039 void hci_sock_dev_event(struct hci_dev *hdev, int event);
2041 #define HCI_MGMT_VAR_LEN BIT(0)
2042 #define HCI_MGMT_NO_HDEV BIT(1)
2043 #define HCI_MGMT_UNTRUSTED BIT(2)
2044 #define HCI_MGMT_UNCONFIGURED BIT(3)
2045 #define HCI_MGMT_HDEV_OPTIONAL BIT(4)
2047 struct hci_mgmt_handler {
2048 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
2051 unsigned long flags;
2054 struct hci_mgmt_chan {
2055 struct list_head list;
2056 unsigned short channel;
2057 size_t handler_count;
2058 const struct hci_mgmt_handler *handlers;
2060 size_t tizen_handler_count;
2061 const struct hci_mgmt_handler *tizen_handlers;
2063 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
2066 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
2067 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
2069 /* Management interface */
2070 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
2071 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
2072 BIT(BDADDR_LE_RANDOM))
2073 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
2074 BIT(BDADDR_LE_PUBLIC) | \
2075 BIT(BDADDR_LE_RANDOM))
2077 /* These LE scan and inquiry parameters were chosen according to LE General
2078 * Discovery Procedure specification.
2080 #define DISCOV_LE_SCAN_WIN 0x12
2081 #define DISCOV_LE_SCAN_INT 0x12
2082 #define DISCOV_LE_TIMEOUT 10240 /* msec */
2083 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
2084 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
2085 #define DISCOV_BREDR_INQUIRY_LEN 0x08
2086 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
2087 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */
2088 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */
2089 #define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */
2090 #define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */
2091 #define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */
2092 #define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */
2093 #define INTERVAL_TO_MS(x) (((x) * 10) / 0x10)
2095 #define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */
2097 void mgmt_fill_version_info(void *ver);
2098 int mgmt_new_settings(struct hci_dev *hdev);
2099 void mgmt_index_added(struct hci_dev *hdev);
2100 void mgmt_index_removed(struct hci_dev *hdev);
2101 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
2102 void mgmt_power_on(struct hci_dev *hdev, int err);
2103 void __mgmt_power_off(struct hci_dev *hdev);
2104 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
2106 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
2107 u8 *name, u8 name_len);
2108 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
2109 u8 link_type, u8 addr_type, u8 reason,
2110 bool mgmt_connected);
2111 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
2112 u8 link_type, u8 addr_type, u8 status);
2113 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2114 u8 addr_type, u8 status);
2115 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
2116 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2118 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2120 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2121 u8 link_type, u8 addr_type, u32 value,
2123 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2124 u8 link_type, u8 addr_type, u8 status);
2125 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2126 u8 link_type, u8 addr_type, u8 status);
2127 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2128 u8 link_type, u8 addr_type);
2129 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2130 u8 link_type, u8 addr_type, u8 status);
2131 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2132 u8 link_type, u8 addr_type, u8 status);
2133 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
2134 u8 link_type, u8 addr_type, u32 passkey,
2136 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
2137 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
2138 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
2140 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
2141 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
2142 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
2143 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2144 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
2145 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len,
2147 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2148 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
2149 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
2150 void mgmt_suspending(struct hci_dev *hdev, u8 state);
2151 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
2153 bool mgmt_powering_down(struct hci_dev *hdev);
2154 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
2155 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
2156 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
2158 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
2159 u8 bdaddr_type, u8 store_hint, u16 min_interval,
2160 u16 max_interval, u16 latency, u16 timeout);
2161 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
2162 bool mgmt_get_connectable(struct hci_dev *hdev);
2163 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
2164 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
2166 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
2168 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle);
2169 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
2170 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle,
2171 bdaddr_t *bdaddr, u8 addr_type);
2174 void mgmt_rssi_enable_success(struct sock *sk, struct hci_dev *hdev,
2175 void *data, struct hci_cc_rsp_enable_rssi *rp, int success);
2176 void mgmt_rssi_disable_success(struct sock *sk, struct hci_dev *hdev,
2177 void *data, struct hci_cc_rsp_enable_rssi *rp, int success);
2178 int mgmt_set_rssi_threshold(struct sock *sk, struct hci_dev *hdev,
2179 void *data, u16 len);
2180 void mgmt_rssi_alert_evt(struct hci_dev *hdev, struct sk_buff *skb);
2181 void mgmt_raw_rssi_response(struct hci_dev *hdev,
2182 struct hci_cc_rp_get_raw_rssi *rp, int success);
2183 void mgmt_enable_rssi_cc(struct hci_dev *hdev, void *response, u8 status);
2186 int hci_abort_conn(struct hci_conn *conn, u8 reason);
2187 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
2189 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
2190 __u8 ltk[16], __u8 key_size);
2192 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
2195 #define SCO_AIRMODE_MASK 0x0003
2196 #define SCO_AIRMODE_CVSD 0x0000
2197 #define SCO_AIRMODE_TRANSP 0x0003
2199 #define LOCAL_CODEC_ACL_MASK BIT(0)
2200 #define LOCAL_CODEC_SCO_MASK BIT(1)
2202 #define TRANSPORT_TYPE_MAX 0x04
2204 #endif /* __HCI_CORE_H */