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 work_struct cmd_sync_cancel_work;
517 struct work_struct reenable_adv_work;
519 __u16 discov_timeout;
520 struct delayed_work discov_off;
522 struct delayed_work service_cache;
524 struct delayed_work cmd_timer;
525 struct delayed_work ncmd_timer;
527 struct work_struct rx_work;
528 struct work_struct cmd_work;
529 struct work_struct tx_work;
531 struct delayed_work le_scan_disable;
532 struct delayed_work le_scan_restart;
534 struct sk_buff_head rx_q;
535 struct sk_buff_head raw_q;
536 struct sk_buff_head cmd_q;
538 struct sk_buff *sent_cmd;
539 struct sk_buff *recv_event;
541 struct mutex req_lock;
542 wait_queue_head_t req_wait_q;
545 struct sk_buff *req_skb;
548 void *smp_bredr_data;
550 struct discovery_state discovery;
552 int discovery_old_state;
553 bool discovery_paused;
554 int advertising_old_state;
555 bool advertising_paused;
557 struct notifier_block suspend_notifier;
558 enum suspended_state suspend_state_next;
559 enum suspended_state suspend_state;
560 bool scanning_paused;
566 struct hci_conn_hash conn_hash;
568 struct list_head mesh_pending;
569 struct list_head mgmt_pending;
570 struct list_head reject_list;
571 struct list_head accept_list;
572 struct list_head uuids;
573 struct list_head link_keys;
574 struct list_head long_term_keys;
575 struct list_head identity_resolving_keys;
576 struct list_head remote_oob_data;
577 struct list_head le_accept_list;
578 struct list_head le_resolv_list;
579 struct list_head le_conn_params;
580 struct list_head pend_le_conns;
581 struct list_head pend_le_reports;
582 struct list_head blocked_keys;
583 struct list_head local_codecs;
585 struct hci_dev_stats stat;
591 struct dentry *debugfs;
595 struct rfkill *rfkill;
597 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
598 hci_conn_flags_t conn_flags;
601 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
603 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
604 __u8 scan_rsp_data_len;
605 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH];
606 __u8 per_adv_data_len;
608 struct list_head adv_instances;
609 unsigned int adv_instance_cnt;
610 __u8 cur_adv_instance;
611 __u16 adv_instance_timeout;
612 struct delayed_work adv_instance_expire;
614 struct idr adv_monitors_idr;
615 unsigned int adv_monitors_cnt;
619 struct delayed_work rpa_expired;
622 struct delayed_work mesh_send_done;
625 INTERLEAVE_SCAN_NONE,
626 INTERLEAVE_SCAN_NO_FILTER,
627 INTERLEAVE_SCAN_ALLOWLIST
628 } interleave_scan_state;
630 struct delayed_work interleave_scan;
632 struct list_head monitored_devices;
633 bool advmon_pend_notify;
635 #if IS_ENABLED(CONFIG_BT_LEDS)
636 struct led_trigger *power_led;
639 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
642 bool msft_curve_validity;
645 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
647 bool aosp_quality_report;
650 int (*open)(struct hci_dev *hdev);
651 int (*close)(struct hci_dev *hdev);
652 int (*flush)(struct hci_dev *hdev);
653 int (*setup)(struct hci_dev *hdev);
654 int (*shutdown)(struct hci_dev *hdev);
655 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
656 void (*notify)(struct hci_dev *hdev, unsigned int evt);
657 void (*hw_error)(struct hci_dev *hdev, u8 code);
658 int (*post_init)(struct hci_dev *hdev);
659 int (*set_diag)(struct hci_dev *hdev, bool enable);
660 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
661 void (*cmd_timeout)(struct hci_dev *hdev);
662 void (*reset)(struct hci_dev *hdev);
663 bool (*wakeup)(struct hci_dev *hdev);
664 int (*set_quality_report)(struct hci_dev *hdev, bool enable);
665 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path);
666 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type,
667 struct bt_codec *codec, __u8 *vnd_len,
671 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
674 CONN_REASON_PAIR_DEVICE,
675 CONN_REASON_L2CAP_CHAN,
676 CONN_REASON_SCO_CONNECT,
677 CONN_REASON_ISO_CONNECT,
681 struct list_head list;
703 __u8 features[HCI_MAX_PAGES][8];
709 __u8 pending_sec_level;
713 __u32 passkey_notify;
714 __u8 passkey_entered;
718 __u16 auth_payload_timeout;
719 __u16 le_conn_min_interval;
720 __u16 le_conn_max_interval;
721 __u16 le_conn_interval;
722 __u16 le_conn_latency;
723 __u16 le_supv_timeout;
724 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
725 __u8 le_adv_data_len;
726 __u8 le_per_adv_data[HCI_MAX_PER_AD_LENGTH];
727 __u8 le_per_adv_data_len;
733 struct bt_iso_qos iso_qos;
736 enum conn_reasons conn_reason;
739 __u16 clock_accuracy;
741 unsigned long conn_info_timestamp;
749 struct sk_buff_head data_q;
750 struct list_head chan_list;
752 struct delayed_work disc_work;
753 struct delayed_work auto_accept_work;
754 struct delayed_work idle_work;
755 struct delayed_work le_conn_timeout;
756 struct work_struct le_scan_cleanup;
759 struct dentry *debugfs;
761 struct hci_dev *hdev;
765 struct amp_mgr *amp_mgr;
767 struct hci_conn *link;
768 struct bt_codec codec;
770 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
771 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
772 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
774 void (*cleanup)(struct hci_conn *conn);
778 struct list_head list;
780 struct hci_conn *conn;
781 struct sk_buff_head data_q;
787 struct hci_conn_params {
788 struct list_head list;
789 struct list_head action;
794 u16 conn_min_interval;
795 u16 conn_max_interval;
797 u16 supervision_timeout;
800 HCI_AUTO_CONN_DISABLED,
801 HCI_AUTO_CONN_REPORT,
802 HCI_AUTO_CONN_DIRECT,
803 HCI_AUTO_CONN_ALWAYS,
804 HCI_AUTO_CONN_LINK_LOSS,
805 HCI_AUTO_CONN_EXPLICIT,
808 struct hci_conn *conn;
809 bool explicit_connect;
810 hci_conn_flags_t flags;
814 extern struct list_head hci_dev_list;
815 extern struct list_head hci_cb_list;
816 extern rwlock_t hci_dev_list_lock;
817 extern struct mutex hci_cb_list_lock;
819 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
820 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
821 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
822 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
823 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
824 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
825 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
827 #define hci_dev_clear_volatile_flags(hdev) \
829 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
830 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
831 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
832 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
833 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \
836 #define hci_dev_le_state_simultaneous(hdev) \
837 (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \
838 (hdev->le_states[4] & 0x08) && /* Central */ \
839 (hdev->le_states[4] & 0x40) && /* Peripheral */ \
840 (hdev->le_states[3] & 0x10)) /* Simultaneous */
842 /* ----- HCI interface to upper protocols ----- */
843 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
844 int l2cap_disconn_ind(struct hci_conn *hcon);
845 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
847 #if IS_ENABLED(CONFIG_BT_BREDR)
848 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
849 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
851 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
857 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
862 #if IS_ENABLED(CONFIG_BT_LE)
863 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
864 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
866 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
871 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb,
877 /* ----- Inquiry cache ----- */
878 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
879 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
881 static inline void discovery_init(struct hci_dev *hdev)
883 hdev->discovery.state = DISCOVERY_STOPPED;
884 INIT_LIST_HEAD(&hdev->discovery.all);
885 INIT_LIST_HEAD(&hdev->discovery.unknown);
886 INIT_LIST_HEAD(&hdev->discovery.resolve);
887 hdev->discovery.report_invalid_rssi = true;
888 hdev->discovery.rssi = HCI_RSSI_INVALID;
891 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
893 hdev->discovery.result_filtering = false;
894 hdev->discovery.report_invalid_rssi = true;
895 hdev->discovery.rssi = HCI_RSSI_INVALID;
896 hdev->discovery.uuid_count = 0;
897 kfree(hdev->discovery.uuids);
898 hdev->discovery.uuids = NULL;
899 hdev->discovery.scan_start = 0;
900 hdev->discovery.scan_duration = 0;
903 bool hci_discovery_active(struct hci_dev *hdev);
905 void hci_discovery_set_state(struct hci_dev *hdev, int state);
907 static inline int inquiry_cache_empty(struct hci_dev *hdev)
909 return list_empty(&hdev->discovery.all);
912 static inline long inquiry_cache_age(struct hci_dev *hdev)
914 struct discovery_state *c = &hdev->discovery;
915 return jiffies - c->timestamp;
918 static inline long inquiry_entry_age(struct inquiry_entry *e)
920 return jiffies - e->timestamp;
923 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
925 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
927 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
930 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
931 struct inquiry_entry *ie);
932 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
934 void hci_inquiry_cache_flush(struct hci_dev *hdev);
936 /* ----- HCI Connections ----- */
939 HCI_CONN_REAUTH_PEND,
940 HCI_CONN_ENCRYPT_PEND,
941 HCI_CONN_RSWITCH_PEND,
942 HCI_CONN_MODE_CHANGE_PEND,
943 HCI_CONN_SCO_SETUP_PEND,
944 HCI_CONN_MGMT_CONNECTED,
945 HCI_CONN_SSP_ENABLED,
954 HCI_CONN_STK_ENCRYPT,
955 HCI_CONN_AUTH_INITIATOR,
957 HCI_CONN_PARAM_REMOVAL_PEND,
958 HCI_CONN_NEW_LINK_KEY,
960 HCI_CONN_AUTH_FAILURE,
964 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
966 struct hci_dev *hdev = conn->hdev;
967 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
968 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
971 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
973 struct hci_dev *hdev = conn->hdev;
974 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
975 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
978 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
980 struct hci_conn_hash *h = &hdev->conn_hash;
981 list_add_rcu(&c->list, &h->list);
991 if (c->role == HCI_ROLE_SLAVE)
992 h->le_num_peripheral++;
1004 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
1006 struct hci_conn_hash *h = &hdev->conn_hash;
1008 list_del_rcu(&c->list);
1020 if (c->role == HCI_ROLE_SLAVE)
1021 h->le_num_peripheral--;
1033 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
1035 struct hci_conn_hash *h = &hdev->conn_hash;
1053 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
1055 struct hci_conn_hash *c = &hdev->conn_hash;
1057 return c->acl_num + c->amp_num + c->sco_num + c->le_num + c->iso_num;
1060 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
1062 struct hci_conn_hash *h = &hdev->conn_hash;
1064 __u8 type = INVALID_LINK;
1068 list_for_each_entry_rcu(c, &h->list, list) {
1069 if (c->handle == handle) {
1080 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev,
1084 struct hci_conn_hash *h = &hdev->conn_hash;
1089 list_for_each_entry_rcu(c, &h->list, list) {
1090 if (bacmp(&c->dst, ba) || c->type != ISO_LINK)
1093 if (c->iso_qos.big == big && c->iso_qos.bis == bis) {
1103 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
1106 struct hci_conn_hash *h = &hdev->conn_hash;
1111 list_for_each_entry_rcu(c, &h->list, list) {
1112 if (c->handle == handle) {
1122 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
1123 __u8 type, bdaddr_t *ba)
1125 struct hci_conn_hash *h = &hdev->conn_hash;
1130 list_for_each_entry_rcu(c, &h->list, list) {
1131 if (c->type == type && !bacmp(&c->dst, ba)) {
1142 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
1146 struct hci_conn_hash *h = &hdev->conn_hash;
1151 list_for_each_entry_rcu(c, &h->list, list) {
1152 if (c->type != LE_LINK)
1155 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1166 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev,
1170 struct hci_conn_hash *h = &hdev->conn_hash;
1175 list_for_each_entry_rcu(c, &h->list, list) {
1176 if (c->type != ISO_LINK)
1179 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1190 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev,
1193 struct hci_conn_hash *h = &hdev->conn_hash;
1198 list_for_each_entry_rcu(c, &h->list, list) {
1199 if (c->type != ISO_LINK)
1202 if (handle == c->iso_qos.cig) {
1213 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev,
1216 struct hci_conn_hash *h = &hdev->conn_hash;
1221 list_for_each_entry_rcu(c, &h->list, list) {
1222 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK)
1225 if (handle == c->iso_qos.big) {
1236 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1237 __u8 type, __u16 state)
1239 struct hci_conn_hash *h = &hdev->conn_hash;
1244 list_for_each_entry_rcu(c, &h->list, list) {
1245 if (c->type == type && c->state == state) {
1256 typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data);
1257 static inline void hci_conn_hash_list_state(struct hci_dev *hdev,
1258 hci_conn_func_t func, __u8 type,
1259 __u16 state, void *data)
1261 struct hci_conn_hash *h = &hdev->conn_hash;
1269 list_for_each_entry_rcu(c, &h->list, list) {
1270 if (c->type == type && c->state == state)
1277 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1279 struct hci_conn_hash *h = &hdev->conn_hash;
1284 list_for_each_entry_rcu(c, &h->list, list) {
1285 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1286 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1297 int hci_disconnect(struct hci_conn *conn, __u8 reason);
1298 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1299 void hci_sco_setup(struct hci_conn *conn, __u8 status);
1300 bool hci_iso_setup_path(struct hci_conn *conn);
1301 int hci_le_create_cis(struct hci_conn *conn);
1303 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1305 int hci_conn_del(struct hci_conn *conn);
1306 void hci_conn_hash_flush(struct hci_dev *hdev);
1307 void hci_conn_check_pending(struct hci_dev *hdev);
1309 struct hci_chan *hci_chan_create(struct hci_conn *conn);
1310 void hci_chan_del(struct hci_chan *chan);
1311 void hci_chan_list_flush(struct hci_conn *conn);
1312 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1314 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1315 u8 dst_type, u8 sec_level,
1317 enum conn_reasons conn_reason);
1318 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1319 u8 dst_type, bool dst_resolved, u8 sec_level,
1320 u16 conn_timeout, u8 role);
1321 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1322 u8 sec_level, u8 auth_type,
1323 enum conn_reasons conn_reason);
1324 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1325 __u16 setting, struct bt_codec *codec);
1326 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
1327 __u8 dst_type, struct bt_iso_qos *qos);
1328 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
1329 __u8 dst_type, struct bt_iso_qos *qos);
1330 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
1331 __u8 dst_type, struct bt_iso_qos *qos,
1332 __u8 data_len, __u8 *data);
1333 int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type,
1335 int hci_le_big_create_sync(struct hci_dev *hdev, struct bt_iso_qos *qos,
1336 __u16 sync_handle, __u8 num_bis, __u8 bis[]);
1337 int hci_conn_check_link_mode(struct hci_conn *conn);
1338 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1339 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1341 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1343 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1345 void hci_conn_failed(struct hci_conn *conn, u8 status);
1348 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1349 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1350 * working or anything else. They just guarantee that the object is available
1351 * and can be dereferenced. So you can use its locks, local variables and any
1352 * other constant data.
1353 * Before accessing runtime data, you _must_ lock the object and then check that
1354 * it is still running. As soon as you release the locks, the connection might
1355 * get dropped, though.
1357 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1358 * how long the underlying connection is held. So every channel that runs on the
1359 * hci_conn object calls this to prevent the connection from disappearing. As
1360 * long as you hold a device, you must also guarantee that you have a valid
1361 * reference to the device via hci_conn_get() (or the initial reference from
1363 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1364 * break because nobody cares for that. But this means, we cannot use
1365 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1368 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1370 get_device(&conn->dev);
1374 static inline void hci_conn_put(struct hci_conn *conn)
1376 put_device(&conn->dev);
1379 static inline void hci_conn_hold(struct hci_conn *conn)
1381 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1383 atomic_inc(&conn->refcnt);
1384 cancel_delayed_work(&conn->disc_work);
1387 static inline void hci_conn_drop(struct hci_conn *conn)
1389 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1391 if (atomic_dec_and_test(&conn->refcnt)) {
1392 unsigned long timeo;
1394 switch (conn->type) {
1397 cancel_delayed_work(&conn->idle_work);
1398 if (conn->state == BT_CONNECTED) {
1399 timeo = conn->disc_timeout;
1408 timeo = conn->disc_timeout;
1416 cancel_delayed_work(&conn->disc_work);
1417 queue_delayed_work(conn->hdev->workqueue,
1418 &conn->disc_work, timeo);
1422 /* ----- HCI Devices ----- */
1423 static inline void hci_dev_put(struct hci_dev *d)
1425 BT_DBG("%s orig refcnt %d", d->name,
1426 kref_read(&d->dev.kobj.kref));
1428 put_device(&d->dev);
1431 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1433 BT_DBG("%s orig refcnt %d", d->name,
1434 kref_read(&d->dev.kobj.kref));
1436 get_device(&d->dev);
1440 #define hci_dev_lock(d) mutex_lock(&d->lock)
1441 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
1443 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1444 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1446 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1448 return dev_get_drvdata(&hdev->dev);
1451 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1453 dev_set_drvdata(&hdev->dev, data);
1456 static inline void *hci_get_priv(struct hci_dev *hdev)
1458 return (char *)hdev + sizeof(*hdev);
1461 struct hci_dev *hci_dev_get(int index);
1462 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1464 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);
1466 static inline struct hci_dev *hci_alloc_dev(void)
1468 return hci_alloc_dev_priv(0);
1471 void hci_free_dev(struct hci_dev *hdev);
1472 int hci_register_dev(struct hci_dev *hdev);
1473 void hci_unregister_dev(struct hci_dev *hdev);
1474 void hci_release_dev(struct hci_dev *hdev);
1475 int hci_register_suspend_notifier(struct hci_dev *hdev);
1476 int hci_unregister_suspend_notifier(struct hci_dev *hdev);
1477 int hci_suspend_dev(struct hci_dev *hdev);
1478 int hci_resume_dev(struct hci_dev *hdev);
1479 int hci_reset_dev(struct hci_dev *hdev);
1480 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1481 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1482 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1483 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1485 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1487 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
1488 hdev->msft_opcode = opcode;
1492 static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1494 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
1495 hdev->aosp_capable = true;
1499 int hci_dev_open(__u16 dev);
1500 int hci_dev_close(__u16 dev);
1501 int hci_dev_do_close(struct hci_dev *hdev);
1502 int hci_dev_reset(__u16 dev);
1503 int hci_dev_reset_stat(__u16 dev);
1504 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1505 int hci_get_dev_list(void __user *arg);
1506 int hci_get_dev_info(void __user *arg);
1507 int hci_get_conn_list(void __user *arg);
1508 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1509 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1510 int hci_inquiry(void __user *arg);
1512 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1513 bdaddr_t *bdaddr, u8 type);
1514 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1515 struct list_head *list, bdaddr_t *bdaddr,
1517 struct bdaddr_list_with_flags *
1518 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1520 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1521 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1522 u8 type, u8 *peer_irk, u8 *local_irk);
1523 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1524 u8 type, u32 flags);
1525 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1526 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1528 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1530 void hci_bdaddr_list_clear(struct list_head *list);
1532 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1533 bdaddr_t *addr, u8 addr_type);
1534 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1535 bdaddr_t *addr, u8 addr_type);
1536 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1537 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1539 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1543 void hci_uuids_clear(struct hci_dev *hdev);
1545 void hci_link_keys_clear(struct hci_dev *hdev);
1546 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1547 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1548 bdaddr_t *bdaddr, u8 *val, u8 type,
1549 u8 pin_len, bool *persistent);
1550 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1551 u8 addr_type, u8 type, u8 authenticated,
1552 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1553 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1554 u8 addr_type, u8 role);
1555 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1556 void hci_smp_ltks_clear(struct hci_dev *hdev);
1557 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1559 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1560 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1562 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1563 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1564 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1565 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1566 void hci_blocked_keys_clear(struct hci_dev *hdev);
1567 void hci_smp_irks_clear(struct hci_dev *hdev);
1569 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1571 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1572 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1573 bdaddr_t *bdaddr, u8 bdaddr_type);
1574 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1575 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1576 u8 *hash256, u8 *rand256);
1577 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1580 void hci_adv_instances_clear(struct hci_dev *hdev);
1581 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1582 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1583 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance,
1584 u32 flags, u16 adv_data_len, u8 *adv_data,
1585 u16 scan_rsp_len, u8 *scan_rsp_data,
1586 u16 timeout, u16 duration, s8 tx_power,
1587 u32 min_interval, u32 max_interval,
1589 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance,
1590 u32 flags, u8 data_len, u8 *data,
1591 u32 min_interval, u32 max_interval);
1592 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1593 u16 adv_data_len, u8 *adv_data,
1594 u16 scan_rsp_len, u8 *scan_rsp_data);
1595 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1596 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1597 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance);
1598 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance);
1600 void hci_adv_monitors_clear(struct hci_dev *hdev);
1601 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1602 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1603 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle);
1604 int hci_remove_all_adv_monitor(struct hci_dev *hdev);
1605 bool hci_is_adv_monitoring(struct hci_dev *hdev);
1606 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1608 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1610 void hci_init_sysfs(struct hci_dev *hdev);
1611 void hci_conn_init_sysfs(struct hci_conn *conn);
1612 void hci_conn_add_sysfs(struct hci_conn *conn);
1613 void hci_conn_del_sysfs(struct hci_conn *conn);
1615 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1616 #define GET_HCIDEV_DEV(hdev) ((hdev)->dev.parent)
1618 /* ----- LMP capabilities ----- */
1619 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1620 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1621 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1622 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1623 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1624 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1625 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1626 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1627 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1628 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1629 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1630 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1631 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1632 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1633 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1634 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1635 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1636 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1637 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1638 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1639 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1640 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1641 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1642 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1644 /* ----- Extended LMP capabilities ----- */
1645 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1646 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1647 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1648 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1649 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1650 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1652 /* ----- Host capabilities ----- */
1653 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1654 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1655 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1656 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1658 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1659 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1660 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1661 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1662 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \
1663 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED))
1664 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \
1667 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1668 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1670 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1671 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1673 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1674 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1676 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1678 /* Use LL Privacy based address resolution if supported */
1679 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \
1680 hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY))
1682 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \
1683 (hdev->commands[39] & 0x04))
1685 /* Use enhanced synchronous connection if command is supported and its quirk
1688 #define enhanced_sync_conn_capable(dev) \
1689 (((dev)->commands[29] & 0x08) && \
1690 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks))
1692 /* Use ext scanning if set ext scan param and ext scan enable is supported */
1693 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1694 ((dev)->commands[37] & 0x40) && \
1695 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks))
1697 /* Use ext create connection if command is supported */
1698 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1700 /* Extended advertising support */
1701 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1703 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789:
1705 * C24: Mandatory if the LE Controller supports Connection State and either
1706 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported
1708 #define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \
1709 ext_adv_capable(dev))
1711 /* Periodic advertising support */
1712 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV))
1714 /* CIS Master/Slave and BIS support */
1715 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev))
1716 #define cis_capable(dev) \
1717 (cis_central_capable(dev) || cis_peripheral_capable(dev))
1718 #define cis_central_capable(dev) \
1719 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL)
1720 #define cis_peripheral_capable(dev) \
1721 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL)
1722 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER)
1724 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \
1725 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks)))
1727 /* ----- HCI protocols ----- */
1728 #define HCI_PROTO_DEFER 0x01
1730 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1731 __u8 type, __u8 *flags)
1735 return l2cap_connect_ind(hdev, bdaddr);
1739 return sco_connect_ind(hdev, bdaddr, flags);
1742 return iso_connect_ind(hdev, bdaddr, flags);
1745 BT_ERR("unknown link type %d", type);
1750 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1752 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1753 return HCI_ERROR_REMOTE_USER_TERM;
1755 return l2cap_disconn_ind(conn);
1758 /* ----- HCI callbacks ----- */
1760 struct list_head list;
1764 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1765 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1766 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1768 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1769 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1772 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1776 mutex_lock(&hci_cb_list_lock);
1777 list_for_each_entry(cb, &hci_cb_list, list) {
1778 if (cb->connect_cfm)
1779 cb->connect_cfm(conn, status);
1781 mutex_unlock(&hci_cb_list_lock);
1783 if (conn->connect_cfm_cb)
1784 conn->connect_cfm_cb(conn, status);
1787 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1791 mutex_lock(&hci_cb_list_lock);
1792 list_for_each_entry(cb, &hci_cb_list, list) {
1793 if (cb->disconn_cfm)
1794 cb->disconn_cfm(conn, reason);
1796 mutex_unlock(&hci_cb_list_lock);
1798 if (conn->disconn_cfm_cb)
1799 conn->disconn_cfm_cb(conn, reason);
1802 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1807 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1810 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1812 mutex_lock(&hci_cb_list_lock);
1813 list_for_each_entry(cb, &hci_cb_list, list) {
1814 if (cb->security_cfm)
1815 cb->security_cfm(conn, status, encrypt);
1817 mutex_unlock(&hci_cb_list_lock);
1819 if (conn->security_cfm_cb)
1820 conn->security_cfm_cb(conn, status);
1823 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
1828 if (conn->state == BT_CONFIG) {
1830 conn->state = BT_CONNECTED;
1832 hci_connect_cfm(conn, status);
1833 hci_conn_drop(conn);
1837 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
1839 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
1845 if (conn->sec_level == BT_SECURITY_SDP)
1846 conn->sec_level = BT_SECURITY_LOW;
1848 if (conn->pending_sec_level > conn->sec_level)
1849 conn->sec_level = conn->pending_sec_level;
1852 mutex_lock(&hci_cb_list_lock);
1853 list_for_each_entry(cb, &hci_cb_list, list) {
1854 if (cb->security_cfm)
1855 cb->security_cfm(conn, status, encrypt);
1857 mutex_unlock(&hci_cb_list_lock);
1859 if (conn->security_cfm_cb)
1860 conn->security_cfm_cb(conn, status);
1863 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1867 mutex_lock(&hci_cb_list_lock);
1868 list_for_each_entry(cb, &hci_cb_list, list) {
1869 if (cb->key_change_cfm)
1870 cb->key_change_cfm(conn, status);
1872 mutex_unlock(&hci_cb_list_lock);
1875 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1880 mutex_lock(&hci_cb_list_lock);
1881 list_for_each_entry(cb, &hci_cb_list, list) {
1882 if (cb->role_switch_cfm)
1883 cb->role_switch_cfm(conn, status, role);
1885 mutex_unlock(&hci_cb_list_lock);
1888 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1890 if (addr_type != ADDR_LE_DEV_RANDOM)
1893 if ((bdaddr->b[5] & 0xc0) == 0x40)
1899 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1901 if (addr_type == ADDR_LE_DEV_PUBLIC)
1904 /* Check for Random Static address type */
1905 if ((addr->b[5] & 0xc0) == 0xc0)
1911 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1912 bdaddr_t *bdaddr, u8 addr_type)
1914 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1917 return hci_find_irk_by_rpa(hdev, bdaddr);
1920 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1925 if (min > max || min < 6 || max > 3200)
1928 if (to_multiplier < 10 || to_multiplier > 3200)
1931 if (max >= to_multiplier * 8)
1934 max_latency = (to_multiplier * 4 / max) - 1;
1935 if (latency > 499 || latency > max_latency)
1941 int hci_register_cb(struct hci_cb *hcb);
1942 int hci_unregister_cb(struct hci_cb *hcb);
1944 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
1947 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1949 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1950 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1951 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb);
1953 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1954 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event);
1956 u32 hci_conn_get_phy(struct hci_conn *conn);
1958 /* ----- HCI Sockets ----- */
1959 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1960 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1961 int flag, struct sock *skip_sk);
1962 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1963 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1964 void *data, u16 data_len, ktime_t tstamp,
1965 int flag, struct sock *skip_sk);
1967 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1969 #define HCI_MGMT_VAR_LEN BIT(0)
1970 #define HCI_MGMT_NO_HDEV BIT(1)
1971 #define HCI_MGMT_UNTRUSTED BIT(2)
1972 #define HCI_MGMT_UNCONFIGURED BIT(3)
1973 #define HCI_MGMT_HDEV_OPTIONAL BIT(4)
1975 struct hci_mgmt_handler {
1976 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1979 unsigned long flags;
1982 struct hci_mgmt_chan {
1983 struct list_head list;
1984 unsigned short channel;
1985 size_t handler_count;
1986 const struct hci_mgmt_handler *handlers;
1987 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1990 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1991 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1993 /* Management interface */
1994 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1995 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1996 BIT(BDADDR_LE_RANDOM))
1997 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1998 BIT(BDADDR_LE_PUBLIC) | \
1999 BIT(BDADDR_LE_RANDOM))
2001 /* These LE scan and inquiry parameters were chosen according to LE General
2002 * Discovery Procedure specification.
2004 #define DISCOV_LE_SCAN_WIN 0x12
2005 #define DISCOV_LE_SCAN_INT 0x12
2006 #define DISCOV_LE_TIMEOUT 10240 /* msec */
2007 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
2008 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
2009 #define DISCOV_BREDR_INQUIRY_LEN 0x08
2010 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
2011 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */
2012 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */
2013 #define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */
2014 #define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */
2015 #define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */
2016 #define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */
2017 #define INTERVAL_TO_MS(x) (((x) * 10) / 0x10)
2019 #define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */
2021 void mgmt_fill_version_info(void *ver);
2022 int mgmt_new_settings(struct hci_dev *hdev);
2023 void mgmt_index_added(struct hci_dev *hdev);
2024 void mgmt_index_removed(struct hci_dev *hdev);
2025 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
2026 void mgmt_power_on(struct hci_dev *hdev, int err);
2027 void __mgmt_power_off(struct hci_dev *hdev);
2028 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
2030 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
2031 u8 *name, u8 name_len);
2032 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
2033 u8 link_type, u8 addr_type, u8 reason,
2034 bool mgmt_connected);
2035 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
2036 u8 link_type, u8 addr_type, u8 status);
2037 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2038 u8 addr_type, u8 status);
2039 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
2040 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2042 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2044 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2045 u8 link_type, u8 addr_type, u32 value,
2047 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2048 u8 link_type, u8 addr_type, u8 status);
2049 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2050 u8 link_type, u8 addr_type, u8 status);
2051 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2052 u8 link_type, u8 addr_type);
2053 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2054 u8 link_type, u8 addr_type, u8 status);
2055 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2056 u8 link_type, u8 addr_type, u8 status);
2057 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
2058 u8 link_type, u8 addr_type, u32 passkey,
2060 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
2061 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
2062 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
2064 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
2065 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
2066 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
2067 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2068 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
2069 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len,
2071 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2072 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
2073 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
2074 void mgmt_suspending(struct hci_dev *hdev, u8 state);
2075 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
2077 bool mgmt_powering_down(struct hci_dev *hdev);
2078 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
2079 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
2080 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
2082 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
2083 u8 bdaddr_type, u8 store_hint, u16 min_interval,
2084 u16 max_interval, u16 latency, u16 timeout);
2085 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
2086 bool mgmt_get_connectable(struct hci_dev *hdev);
2087 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
2088 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
2090 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
2092 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle);
2093 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
2094 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle,
2095 bdaddr_t *bdaddr, u8 addr_type);
2097 int hci_abort_conn(struct hci_conn *conn, u8 reason);
2098 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
2100 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
2101 __u8 ltk[16], __u8 key_size);
2103 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
2106 #define SCO_AIRMODE_MASK 0x0003
2107 #define SCO_AIRMODE_CVSD 0x0000
2108 #define SCO_AIRMODE_TRANSP 0x0003
2110 #define LOCAL_CODEC_ACL_MASK BIT(0)
2111 #define LOCAL_CODEC_SCO_MASK BIT(1)
2113 #define TRANSPORT_TYPE_MAX 0x04
2115 #endif /* __HCI_CORE_H */