2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
28 #include <linux/idr.h>
29 #include <linux/leds.h>
30 #include <linux/rculist.h>
32 #include <net/bluetooth/hci.h>
33 #include <net/bluetooth/hci_sock.h>
36 #define HCI_PRIO_MAX 7
38 /* HCI maximum id value */
39 #define HCI_MAX_ID 10000
41 /* HCI Core structures */
45 __u8 pscan_period_mode;
53 struct inquiry_entry {
54 struct list_head all; /* inq_cache.all */
55 struct list_head list; /* unknown or resolve */
63 struct inquiry_data data;
66 struct discovery_state {
75 struct list_head all; /* All devices found during inquiry */
76 struct list_head unknown; /* Name state not known */
77 struct list_head resolve; /* Name needs to be resolved */
79 bdaddr_t last_adv_addr;
80 u8 last_adv_addr_type;
83 u8 last_adv_data[HCI_MAX_AD_LENGTH];
85 bool report_invalid_rssi;
86 bool result_filtering;
91 unsigned long scan_start;
92 unsigned long scan_duration;
95 #define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
98 SUSPEND_PAUSE_DISCOVERY,
99 SUSPEND_UNPAUSE_DISCOVERY,
101 SUSPEND_PAUSE_ADVERTISING,
102 SUSPEND_UNPAUSE_ADVERTISING,
104 SUSPEND_SCAN_DISABLE,
106 SUSPEND_DISCONNECTING,
108 SUSPEND_POWERING_DOWN,
110 SUSPEND_PREPARE_NOTIFIER,
112 SUSPEND_SET_ADV_FILTER,
116 enum suspended_state {
118 BT_SUSPEND_DISCONNECT,
119 BT_SUSPEND_CONFIGURE_WAKE,
122 struct hci_conn_hash {
123 struct list_head list;
124 unsigned int acl_num;
125 unsigned int amp_num;
126 unsigned int sco_num;
128 unsigned int le_num_peripheral;
132 struct list_head list;
137 struct bdaddr_list_with_irk {
138 struct list_head list;
145 struct bdaddr_list_with_flags {
146 struct list_head list;
152 enum hci_conn_flags {
153 HCI_CONN_FLAG_REMOTE_WAKEUP,
157 #define hci_conn_test_flag(nr, flags) ((flags) & (1U << nr))
159 /* Make sure number of flags doesn't exceed sizeof(current_flags) */
160 static_assert(HCI_CONN_FLAG_MAX < 32);
163 struct list_head list;
170 struct list_head list;
184 struct list_head list;
197 struct list_head list;
206 struct list_head list;
210 u8 val[HCI_LINK_KEY_SIZE];
215 struct list_head list;
226 struct list_head list;
232 __u16 remaining_time;
235 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
237 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
241 bdaddr_t random_addr;
243 struct delayed_work rpa_expired_cb;
246 #define HCI_MAX_ADV_INSTANCES 5
247 #define HCI_DEFAULT_ADV_DURATION 2
249 #define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F
252 struct list_head list;
256 __u8 value[HCI_MAX_AD_LENGTH];
259 struct adv_rssi_thresholds {
262 __u16 low_threshold_timeout;
263 __u16 high_threshold_timeout;
264 __u8 sampling_period;
268 struct list_head patterns;
269 struct adv_rssi_thresholds rssi;
273 ADV_MONITOR_STATE_NOT_REGISTERED,
274 ADV_MONITOR_STATE_REGISTERED,
275 ADV_MONITOR_STATE_OFFLOADED
279 #define HCI_MIN_ADV_MONITOR_HANDLE 1
280 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32
281 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16
282 #define HCI_ADV_MONITOR_EXT_NONE 1
283 #define HCI_ADV_MONITOR_EXT_MSFT 2
285 #define HCI_MAX_SHORT_NAME_LENGTH 10
287 /* Min encryption key size to match with SMP */
288 #define HCI_MIN_ENC_KEY_SIZE 7
290 /* Default LE RPA expiry time, 15 minutes */
291 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
293 /* Default min/max age of connection information (1s/3s) */
294 #define DEFAULT_CONN_INFO_MIN_AGE 1000
295 #define DEFAULT_CONN_INFO_MAX_AGE 3000
296 /* Default authenticated payload timeout 30s */
297 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8
304 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
307 #define HCI_MAX_PAGES 3
310 struct list_head list;
320 bdaddr_t public_addr;
321 bdaddr_t random_addr;
322 bdaddr_t static_addr;
324 __u8 dev_name[HCI_MAX_NAME_LENGTH];
325 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
326 __u8 eir[HCI_MAX_EIR_LENGTH];
332 __u8 features[HCI_MAX_PAGES][8];
334 __u8 le_accept_list_size;
335 __u8 le_resolv_list_size;
336 __u8 le_num_of_adv_sets;
346 __u8 stored_max_keys;
347 __u8 stored_num_keys;
350 __u8 err_data_reporting;
351 __u16 page_scan_interval;
352 __u16 page_scan_window;
354 __u8 le_adv_channel_map;
355 __u16 le_adv_min_interval;
356 __u16 le_adv_max_interval;
358 __u16 le_scan_interval;
359 __u16 le_scan_window;
360 __u16 le_scan_int_suspend;
361 __u16 le_scan_window_suspend;
362 __u16 le_scan_int_discovery;
363 __u16 le_scan_window_discovery;
364 __u16 le_scan_int_adv_monitor;
365 __u16 le_scan_window_adv_monitor;
366 __u16 le_scan_int_connect;
367 __u16 le_scan_window_connect;
368 __u16 le_conn_min_interval;
369 __u16 le_conn_max_interval;
370 __u16 le_conn_latency;
371 __u16 le_supv_timeout;
373 __u16 le_def_tx_time;
375 __u16 le_max_tx_time;
377 __u16 le_max_rx_time;
378 __u8 le_max_key_size;
379 __u8 le_min_key_size;
380 __u16 discov_interleaved_timeout;
381 __u16 conn_info_min_age;
382 __u16 conn_info_max_age;
383 __u16 auth_payload_timeout;
384 __u8 min_enc_key_size;
385 __u8 max_enc_key_size;
390 __u16 advmon_allowlist_duration;
391 __u16 advmon_no_filter_duration;
392 __u8 enable_advmon_interleave_scan;
399 __u8 def_page_scan_type;
400 __u16 def_page_scan_int;
401 __u16 def_page_scan_window;
402 __u8 def_inq_scan_type;
403 __u16 def_inq_scan_int;
404 __u16 def_inq_scan_window;
406 __u16 def_page_timeout;
407 __u16 def_multi_adv_rotation_duration;
408 __u16 def_le_autoconnect_timeout;
409 __s8 min_le_tx_power;
410 __s8 max_le_tx_power;
418 __u16 sniff_min_interval;
419 __u16 sniff_max_interval;
424 __u32 amp_min_latency;
428 __u16 amp_assoc_size;
429 __u32 amp_max_flush_to;
430 __u32 amp_be_flush_to;
432 struct amp_assoc loc_assoc;
436 unsigned int auto_accept_delay;
438 unsigned long quirks;
441 unsigned int acl_cnt;
442 unsigned int sco_cnt;
445 unsigned int acl_mtu;
446 unsigned int sco_mtu;
448 unsigned int acl_pkts;
449 unsigned int sco_pkts;
450 unsigned int le_pkts;
457 unsigned long acl_last_tx;
458 unsigned long sco_last_tx;
459 unsigned long le_last_tx;
464 struct workqueue_struct *workqueue;
465 struct workqueue_struct *req_workqueue;
467 struct work_struct power_on;
468 struct delayed_work power_off;
469 struct work_struct error_reset;
471 __u16 discov_timeout;
472 struct delayed_work discov_off;
474 struct delayed_work service_cache;
476 struct delayed_work cmd_timer;
477 struct delayed_work ncmd_timer;
479 struct work_struct rx_work;
480 struct work_struct cmd_work;
481 struct work_struct tx_work;
483 struct work_struct discov_update;
484 struct work_struct bg_scan_update;
485 struct work_struct scan_update;
486 struct work_struct connectable_update;
487 struct work_struct discoverable_update;
488 struct delayed_work le_scan_disable;
489 struct delayed_work le_scan_restart;
491 struct sk_buff_head rx_q;
492 struct sk_buff_head raw_q;
493 struct sk_buff_head cmd_q;
495 struct sk_buff *sent_cmd;
497 struct mutex req_lock;
498 wait_queue_head_t req_wait_q;
501 struct sk_buff *req_skb;
504 void *smp_bredr_data;
506 struct discovery_state discovery;
508 int discovery_old_state;
509 bool discovery_paused;
510 int advertising_old_state;
511 bool advertising_paused;
513 struct notifier_block suspend_notifier;
514 struct work_struct suspend_prepare;
515 enum suspended_state suspend_state_next;
516 enum suspended_state suspend_state;
517 bool scanning_paused;
523 wait_queue_head_t suspend_wait_q;
524 DECLARE_BITMAP(suspend_tasks, __SUSPEND_NUM_TASKS);
526 struct hci_conn_hash conn_hash;
528 struct list_head mgmt_pending;
529 struct list_head reject_list;
530 struct list_head accept_list;
531 struct list_head uuids;
532 struct list_head link_keys;
533 struct list_head long_term_keys;
534 struct list_head identity_resolving_keys;
535 struct list_head remote_oob_data;
536 struct list_head le_accept_list;
537 struct list_head le_resolv_list;
538 struct list_head le_conn_params;
539 struct list_head pend_le_conns;
540 struct list_head pend_le_reports;
541 struct list_head blocked_keys;
543 struct hci_dev_stats stat;
549 struct dentry *debugfs;
553 struct rfkill *rfkill;
555 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
558 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
560 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
561 __u8 scan_rsp_data_len;
563 struct list_head adv_instances;
564 unsigned int adv_instance_cnt;
565 __u8 cur_adv_instance;
566 __u16 adv_instance_timeout;
567 struct delayed_work adv_instance_expire;
569 struct idr adv_monitors_idr;
570 unsigned int adv_monitors_cnt;
574 struct delayed_work rpa_expired;
578 INTERLEAVE_SCAN_NONE,
579 INTERLEAVE_SCAN_NO_FILTER,
580 INTERLEAVE_SCAN_ALLOWLIST
581 } interleave_scan_state;
583 struct delayed_work interleave_scan;
585 #if IS_ENABLED(CONFIG_BT_LEDS)
586 struct led_trigger *power_led;
589 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
592 bool msft_curve_validity;
595 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
599 int (*open)(struct hci_dev *hdev);
600 int (*close)(struct hci_dev *hdev);
601 int (*flush)(struct hci_dev *hdev);
602 int (*setup)(struct hci_dev *hdev);
603 int (*shutdown)(struct hci_dev *hdev);
604 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
605 void (*notify)(struct hci_dev *hdev, unsigned int evt);
606 void (*hw_error)(struct hci_dev *hdev, u8 code);
607 int (*post_init)(struct hci_dev *hdev);
608 int (*set_diag)(struct hci_dev *hdev, bool enable);
609 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
610 void (*cmd_timeout)(struct hci_dev *hdev);
611 bool (*prevent_wake)(struct hci_dev *hdev);
614 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
617 CONN_REASON_PAIR_DEVICE,
618 CONN_REASON_L2CAP_CHAN,
619 CONN_REASON_SCO_CONNECT,
623 struct list_head list;
644 __u8 features[HCI_MAX_PAGES][8];
650 __u8 pending_sec_level;
654 __u32 passkey_notify;
655 __u8 passkey_entered;
659 __u16 auth_payload_timeout;
660 __u16 le_conn_min_interval;
661 __u16 le_conn_max_interval;
662 __u16 le_conn_interval;
663 __u16 le_conn_latency;
664 __u16 le_supv_timeout;
665 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
666 __u8 le_adv_data_len;
674 enum conn_reasons conn_reason;
677 __u16 clock_accuracy;
679 unsigned long conn_info_timestamp;
687 struct sk_buff_head data_q;
688 struct list_head chan_list;
690 struct delayed_work disc_work;
691 struct delayed_work auto_accept_work;
692 struct delayed_work idle_work;
693 struct delayed_work le_conn_timeout;
694 struct work_struct le_scan_cleanup;
697 struct dentry *debugfs;
699 struct hci_dev *hdev;
702 struct amp_mgr *amp_mgr;
704 struct hci_conn *link;
706 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
707 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
708 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
712 struct list_head list;
714 struct hci_conn *conn;
715 struct sk_buff_head data_q;
721 struct hci_conn_params {
722 struct list_head list;
723 struct list_head action;
728 u16 conn_min_interval;
729 u16 conn_max_interval;
731 u16 supervision_timeout;
734 HCI_AUTO_CONN_DISABLED,
735 HCI_AUTO_CONN_REPORT,
736 HCI_AUTO_CONN_DIRECT,
737 HCI_AUTO_CONN_ALWAYS,
738 HCI_AUTO_CONN_LINK_LOSS,
739 HCI_AUTO_CONN_EXPLICIT,
742 struct hci_conn *conn;
743 bool explicit_connect;
747 extern struct list_head hci_dev_list;
748 extern struct list_head hci_cb_list;
749 extern rwlock_t hci_dev_list_lock;
750 extern struct mutex hci_cb_list_lock;
752 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
753 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
754 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
755 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
756 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
757 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
758 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
760 #define hci_dev_clear_volatile_flags(hdev) \
762 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
763 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
764 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
765 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
768 /* ----- HCI interface to upper protocols ----- */
769 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
770 int l2cap_disconn_ind(struct hci_conn *hcon);
771 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
773 #if IS_ENABLED(CONFIG_BT_BREDR)
774 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
775 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
777 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
783 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
788 /* ----- Inquiry cache ----- */
789 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
790 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
792 static inline void discovery_init(struct hci_dev *hdev)
794 hdev->discovery.state = DISCOVERY_STOPPED;
795 INIT_LIST_HEAD(&hdev->discovery.all);
796 INIT_LIST_HEAD(&hdev->discovery.unknown);
797 INIT_LIST_HEAD(&hdev->discovery.resolve);
798 hdev->discovery.report_invalid_rssi = true;
799 hdev->discovery.rssi = HCI_RSSI_INVALID;
802 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
804 hdev->discovery.result_filtering = false;
805 hdev->discovery.report_invalid_rssi = true;
806 hdev->discovery.rssi = HCI_RSSI_INVALID;
807 hdev->discovery.uuid_count = 0;
808 kfree(hdev->discovery.uuids);
809 hdev->discovery.uuids = NULL;
810 hdev->discovery.scan_start = 0;
811 hdev->discovery.scan_duration = 0;
814 bool hci_discovery_active(struct hci_dev *hdev);
816 void hci_discovery_set_state(struct hci_dev *hdev, int state);
818 static inline int inquiry_cache_empty(struct hci_dev *hdev)
820 return list_empty(&hdev->discovery.all);
823 static inline long inquiry_cache_age(struct hci_dev *hdev)
825 struct discovery_state *c = &hdev->discovery;
826 return jiffies - c->timestamp;
829 static inline long inquiry_entry_age(struct inquiry_entry *e)
831 return jiffies - e->timestamp;
834 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
836 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
838 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
841 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
842 struct inquiry_entry *ie);
843 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
845 void hci_inquiry_cache_flush(struct hci_dev *hdev);
847 /* ----- HCI Connections ----- */
850 HCI_CONN_REAUTH_PEND,
851 HCI_CONN_ENCRYPT_PEND,
852 HCI_CONN_RSWITCH_PEND,
853 HCI_CONN_MODE_CHANGE_PEND,
854 HCI_CONN_SCO_SETUP_PEND,
855 HCI_CONN_MGMT_CONNECTED,
856 HCI_CONN_SSP_ENABLED,
865 HCI_CONN_STK_ENCRYPT,
866 HCI_CONN_AUTH_INITIATOR,
868 HCI_CONN_PARAM_REMOVAL_PEND,
869 HCI_CONN_NEW_LINK_KEY,
871 HCI_CONN_AUTH_FAILURE,
874 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
876 struct hci_dev *hdev = conn->hdev;
877 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
878 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
881 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
883 struct hci_dev *hdev = conn->hdev;
884 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
885 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
888 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
890 struct hci_conn_hash *h = &hdev->conn_hash;
891 list_add_rcu(&c->list, &h->list);
901 if (c->role == HCI_ROLE_SLAVE)
902 h->le_num_peripheral++;
911 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
913 struct hci_conn_hash *h = &hdev->conn_hash;
915 list_del_rcu(&c->list);
927 if (c->role == HCI_ROLE_SLAVE)
928 h->le_num_peripheral--;
937 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
939 struct hci_conn_hash *h = &hdev->conn_hash;
955 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
957 struct hci_conn_hash *c = &hdev->conn_hash;
959 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
962 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
964 struct hci_conn_hash *h = &hdev->conn_hash;
966 __u8 type = INVALID_LINK;
970 list_for_each_entry_rcu(c, &h->list, list) {
971 if (c->handle == handle) {
982 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
985 struct hci_conn_hash *h = &hdev->conn_hash;
990 list_for_each_entry_rcu(c, &h->list, list) {
991 if (c->handle == handle) {
1001 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
1002 __u8 type, bdaddr_t *ba)
1004 struct hci_conn_hash *h = &hdev->conn_hash;
1009 list_for_each_entry_rcu(c, &h->list, list) {
1010 if (c->type == type && !bacmp(&c->dst, ba)) {
1021 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
1025 struct hci_conn_hash *h = &hdev->conn_hash;
1030 list_for_each_entry_rcu(c, &h->list, list) {
1031 if (c->type != LE_LINK)
1034 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1045 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1046 __u8 type, __u16 state)
1048 struct hci_conn_hash *h = &hdev->conn_hash;
1053 list_for_each_entry_rcu(c, &h->list, list) {
1054 if (c->type == type && c->state == state) {
1065 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1067 struct hci_conn_hash *h = &hdev->conn_hash;
1072 list_for_each_entry_rcu(c, &h->list, list) {
1073 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1074 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1085 int hci_disconnect(struct hci_conn *conn, __u8 reason);
1086 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1087 void hci_sco_setup(struct hci_conn *conn, __u8 status);
1089 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1091 int hci_conn_del(struct hci_conn *conn);
1092 void hci_conn_hash_flush(struct hci_dev *hdev);
1093 void hci_conn_check_pending(struct hci_dev *hdev);
1095 struct hci_chan *hci_chan_create(struct hci_conn *conn);
1096 void hci_chan_del(struct hci_chan *chan);
1097 void hci_chan_list_flush(struct hci_conn *conn);
1098 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1100 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1101 u8 dst_type, u8 sec_level,
1103 enum conn_reasons conn_reason);
1104 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1105 u8 dst_type, u8 sec_level, u16 conn_timeout,
1106 u8 role, bdaddr_t *direct_rpa);
1107 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1108 u8 sec_level, u8 auth_type,
1109 enum conn_reasons conn_reason);
1110 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1112 int hci_conn_check_link_mode(struct hci_conn *conn);
1113 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1114 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1116 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1118 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1120 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
1123 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1124 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1125 * working or anything else. They just guarantee that the object is available
1126 * and can be dereferenced. So you can use its locks, local variables and any
1127 * other constant data.
1128 * Before accessing runtime data, you _must_ lock the object and then check that
1129 * it is still running. As soon as you release the locks, the connection might
1130 * get dropped, though.
1132 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1133 * how long the underlying connection is held. So every channel that runs on the
1134 * hci_conn object calls this to prevent the connection from disappearing. As
1135 * long as you hold a device, you must also guarantee that you have a valid
1136 * reference to the device via hci_conn_get() (or the initial reference from
1138 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1139 * break because nobody cares for that. But this means, we cannot use
1140 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1143 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1145 get_device(&conn->dev);
1149 static inline void hci_conn_put(struct hci_conn *conn)
1151 put_device(&conn->dev);
1154 static inline void hci_conn_hold(struct hci_conn *conn)
1156 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1158 atomic_inc(&conn->refcnt);
1159 cancel_delayed_work(&conn->disc_work);
1162 static inline void hci_conn_drop(struct hci_conn *conn)
1164 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1166 if (atomic_dec_and_test(&conn->refcnt)) {
1167 unsigned long timeo;
1169 switch (conn->type) {
1172 cancel_delayed_work(&conn->idle_work);
1173 if (conn->state == BT_CONNECTED) {
1174 timeo = conn->disc_timeout;
1183 timeo = conn->disc_timeout;
1191 cancel_delayed_work(&conn->disc_work);
1192 queue_delayed_work(conn->hdev->workqueue,
1193 &conn->disc_work, timeo);
1197 /* ----- HCI Devices ----- */
1198 static inline void hci_dev_put(struct hci_dev *d)
1200 BT_DBG("%s orig refcnt %d", d->name,
1201 kref_read(&d->dev.kobj.kref));
1203 put_device(&d->dev);
1206 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1208 BT_DBG("%s orig refcnt %d", d->name,
1209 kref_read(&d->dev.kobj.kref));
1211 get_device(&d->dev);
1215 #define hci_dev_lock(d) mutex_lock(&d->lock)
1216 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
1218 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1219 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1221 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1223 return dev_get_drvdata(&hdev->dev);
1226 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1228 dev_set_drvdata(&hdev->dev, data);
1231 static inline void *hci_get_priv(struct hci_dev *hdev)
1233 return (char *)hdev + sizeof(*hdev);
1236 struct hci_dev *hci_dev_get(int index);
1237 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1239 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);
1241 static inline struct hci_dev *hci_alloc_dev(void)
1243 return hci_alloc_dev_priv(0);
1246 void hci_free_dev(struct hci_dev *hdev);
1247 int hci_register_dev(struct hci_dev *hdev);
1248 void hci_unregister_dev(struct hci_dev *hdev);
1249 void hci_release_dev(struct hci_dev *hdev);
1250 int hci_suspend_dev(struct hci_dev *hdev);
1251 int hci_resume_dev(struct hci_dev *hdev);
1252 int hci_reset_dev(struct hci_dev *hdev);
1253 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1254 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1255 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1256 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1258 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1260 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
1261 hdev->msft_opcode = opcode;
1265 static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1267 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
1268 hdev->aosp_capable = true;
1272 int hci_dev_open(__u16 dev);
1273 int hci_dev_close(__u16 dev);
1274 int hci_dev_do_close(struct hci_dev *hdev);
1275 int hci_dev_reset(__u16 dev);
1276 int hci_dev_reset_stat(__u16 dev);
1277 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1278 int hci_get_dev_list(void __user *arg);
1279 int hci_get_dev_info(void __user *arg);
1280 int hci_get_conn_list(void __user *arg);
1281 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1282 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1283 int hci_inquiry(void __user *arg);
1285 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1286 bdaddr_t *bdaddr, u8 type);
1287 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1288 struct list_head *list, bdaddr_t *bdaddr,
1290 struct bdaddr_list_with_flags *
1291 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1293 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1294 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1295 u8 type, u8 *peer_irk, u8 *local_irk);
1296 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1297 u8 type, u32 flags);
1298 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1299 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1301 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1303 void hci_bdaddr_list_clear(struct list_head *list);
1305 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1306 bdaddr_t *addr, u8 addr_type);
1307 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1308 bdaddr_t *addr, u8 addr_type);
1309 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1310 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1312 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1316 void hci_uuids_clear(struct hci_dev *hdev);
1318 void hci_link_keys_clear(struct hci_dev *hdev);
1319 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1320 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1321 bdaddr_t *bdaddr, u8 *val, u8 type,
1322 u8 pin_len, bool *persistent);
1323 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1324 u8 addr_type, u8 type, u8 authenticated,
1325 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1326 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1327 u8 addr_type, u8 role);
1328 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1329 void hci_smp_ltks_clear(struct hci_dev *hdev);
1330 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1332 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1333 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1335 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1336 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1337 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1338 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1339 void hci_blocked_keys_clear(struct hci_dev *hdev);
1340 void hci_smp_irks_clear(struct hci_dev *hdev);
1342 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1344 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1345 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1346 bdaddr_t *bdaddr, u8 bdaddr_type);
1347 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1348 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1349 u8 *hash256, u8 *rand256);
1350 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1353 void hci_adv_instances_clear(struct hci_dev *hdev);
1354 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1355 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1356 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1357 u16 adv_data_len, u8 *adv_data,
1358 u16 scan_rsp_len, u8 *scan_rsp_data,
1359 u16 timeout, u16 duration, s8 tx_power,
1360 u32 min_interval, u32 max_interval);
1361 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1362 u16 adv_data_len, u8 *adv_data,
1363 u16 scan_rsp_len, u8 *scan_rsp_data);
1364 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1365 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1367 void hci_adv_monitors_clear(struct hci_dev *hdev);
1368 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1369 int hci_add_adv_patterns_monitor_complete(struct hci_dev *hdev, u8 status);
1370 int hci_remove_adv_monitor_complete(struct hci_dev *hdev, u8 status);
1371 bool hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor,
1373 bool hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle, int *err);
1374 bool hci_remove_all_adv_monitor(struct hci_dev *hdev, int *err);
1375 bool hci_is_adv_monitoring(struct hci_dev *hdev);
1376 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1378 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1380 void hci_init_sysfs(struct hci_dev *hdev);
1381 void hci_conn_init_sysfs(struct hci_conn *conn);
1382 void hci_conn_add_sysfs(struct hci_conn *conn);
1383 void hci_conn_del_sysfs(struct hci_conn *conn);
1385 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1387 /* ----- LMP capabilities ----- */
1388 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1389 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1390 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1391 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1392 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1393 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1394 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1395 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1396 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1397 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1398 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1399 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1400 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1401 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1402 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1403 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1404 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1405 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1406 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1407 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1408 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1409 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1410 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1411 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1413 /* ----- Extended LMP capabilities ----- */
1414 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1415 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1416 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1417 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1418 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1419 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1421 /* ----- Host capabilities ----- */
1422 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1423 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1424 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1425 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1427 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1428 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1429 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1430 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1431 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \
1432 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED))
1433 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \
1436 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1437 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1439 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1440 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1442 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1443 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1445 /* Use LL Privacy based address resolution if supported */
1446 #define use_ll_privacy(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1448 /* Use ext scanning if set ext scan param and ext scan enable is supported */
1449 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1450 ((dev)->commands[37] & 0x40))
1451 /* Use ext create connection if command is supported */
1452 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1454 /* Extended advertising support */
1455 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1457 /* ----- HCI protocols ----- */
1458 #define HCI_PROTO_DEFER 0x01
1460 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1461 __u8 type, __u8 *flags)
1465 return l2cap_connect_ind(hdev, bdaddr);
1469 return sco_connect_ind(hdev, bdaddr, flags);
1472 BT_ERR("unknown link type %d", type);
1477 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1479 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1480 return HCI_ERROR_REMOTE_USER_TERM;
1482 return l2cap_disconn_ind(conn);
1485 /* ----- HCI callbacks ----- */
1487 struct list_head list;
1491 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1492 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1493 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1495 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1496 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1499 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1503 mutex_lock(&hci_cb_list_lock);
1504 list_for_each_entry(cb, &hci_cb_list, list) {
1505 if (cb->connect_cfm)
1506 cb->connect_cfm(conn, status);
1508 mutex_unlock(&hci_cb_list_lock);
1510 if (conn->connect_cfm_cb)
1511 conn->connect_cfm_cb(conn, status);
1514 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1518 mutex_lock(&hci_cb_list_lock);
1519 list_for_each_entry(cb, &hci_cb_list, list) {
1520 if (cb->disconn_cfm)
1521 cb->disconn_cfm(conn, reason);
1523 mutex_unlock(&hci_cb_list_lock);
1525 if (conn->disconn_cfm_cb)
1526 conn->disconn_cfm_cb(conn, reason);
1529 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1534 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1537 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1539 mutex_lock(&hci_cb_list_lock);
1540 list_for_each_entry(cb, &hci_cb_list, list) {
1541 if (cb->security_cfm)
1542 cb->security_cfm(conn, status, encrypt);
1544 mutex_unlock(&hci_cb_list_lock);
1546 if (conn->security_cfm_cb)
1547 conn->security_cfm_cb(conn, status);
1550 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
1555 if (conn->state == BT_CONFIG) {
1557 conn->state = BT_CONNECTED;
1559 hci_connect_cfm(conn, status);
1560 hci_conn_drop(conn);
1564 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
1566 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
1572 if (conn->sec_level == BT_SECURITY_SDP)
1573 conn->sec_level = BT_SECURITY_LOW;
1575 if (conn->pending_sec_level > conn->sec_level)
1576 conn->sec_level = conn->pending_sec_level;
1579 mutex_lock(&hci_cb_list_lock);
1580 list_for_each_entry(cb, &hci_cb_list, list) {
1581 if (cb->security_cfm)
1582 cb->security_cfm(conn, status, encrypt);
1584 mutex_unlock(&hci_cb_list_lock);
1586 if (conn->security_cfm_cb)
1587 conn->security_cfm_cb(conn, status);
1590 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1594 mutex_lock(&hci_cb_list_lock);
1595 list_for_each_entry(cb, &hci_cb_list, list) {
1596 if (cb->key_change_cfm)
1597 cb->key_change_cfm(conn, status);
1599 mutex_unlock(&hci_cb_list_lock);
1602 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1607 mutex_lock(&hci_cb_list_lock);
1608 list_for_each_entry(cb, &hci_cb_list, list) {
1609 if (cb->role_switch_cfm)
1610 cb->role_switch_cfm(conn, status, role);
1612 mutex_unlock(&hci_cb_list_lock);
1615 static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
1623 while (parsed < eir_len - 1) {
1624 u8 field_len = eir[0];
1629 parsed += field_len + 1;
1631 if (parsed > eir_len)
1634 if (eir[1] != type) {
1635 eir += field_len + 1;
1639 /* Zero length data */
1644 *data_len = field_len - 1;
1652 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1654 if (addr_type != ADDR_LE_DEV_RANDOM)
1657 if ((bdaddr->b[5] & 0xc0) == 0x40)
1663 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1665 if (addr_type == ADDR_LE_DEV_PUBLIC)
1668 /* Check for Random Static address type */
1669 if ((addr->b[5] & 0xc0) == 0xc0)
1675 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1676 bdaddr_t *bdaddr, u8 addr_type)
1678 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1681 return hci_find_irk_by_rpa(hdev, bdaddr);
1684 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1689 if (min > max || min < 6 || max > 3200)
1692 if (to_multiplier < 10 || to_multiplier > 3200)
1695 if (max >= to_multiplier * 8)
1698 max_latency = (to_multiplier * 4 / max) - 1;
1699 if (latency > 499 || latency > max_latency)
1705 int hci_register_cb(struct hci_cb *hcb);
1706 int hci_unregister_cb(struct hci_cb *hcb);
1708 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1709 const void *param, u32 timeout);
1710 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1711 const void *param, u8 event, u32 timeout);
1712 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
1715 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1717 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1718 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1720 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1722 struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1723 const void *param, u32 timeout);
1725 u32 hci_conn_get_phy(struct hci_conn *conn);
1727 /* ----- HCI Sockets ----- */
1728 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1729 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1730 int flag, struct sock *skip_sk);
1731 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1732 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1733 void *data, u16 data_len, ktime_t tstamp,
1734 int flag, struct sock *skip_sk);
1736 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1738 #define HCI_MGMT_VAR_LEN BIT(0)
1739 #define HCI_MGMT_NO_HDEV BIT(1)
1740 #define HCI_MGMT_UNTRUSTED BIT(2)
1741 #define HCI_MGMT_UNCONFIGURED BIT(3)
1742 #define HCI_MGMT_HDEV_OPTIONAL BIT(4)
1744 struct hci_mgmt_handler {
1745 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1748 unsigned long flags;
1751 struct hci_mgmt_chan {
1752 struct list_head list;
1753 unsigned short channel;
1754 size_t handler_count;
1755 const struct hci_mgmt_handler *handlers;
1757 size_t tizen_handler_count;
1758 const struct hci_mgmt_handler *tizen_handlers;
1760 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1763 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1764 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1766 /* Management interface */
1767 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1768 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1769 BIT(BDADDR_LE_RANDOM))
1770 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1771 BIT(BDADDR_LE_PUBLIC) | \
1772 BIT(BDADDR_LE_RANDOM))
1774 /* These LE scan and inquiry parameters were chosen according to LE General
1775 * Discovery Procedure specification.
1777 #define DISCOV_LE_SCAN_WIN 0x12
1778 #define DISCOV_LE_SCAN_INT 0x12
1779 #define DISCOV_LE_TIMEOUT 10240 /* msec */
1780 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1781 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1782 #define DISCOV_BREDR_INQUIRY_LEN 0x08
1783 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
1784 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */
1785 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */
1787 void mgmt_fill_version_info(void *ver);
1788 int mgmt_new_settings(struct hci_dev *hdev);
1789 void mgmt_index_added(struct hci_dev *hdev);
1790 void mgmt_index_removed(struct hci_dev *hdev);
1791 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1792 void mgmt_power_on(struct hci_dev *hdev, int err);
1793 void __mgmt_power_off(struct hci_dev *hdev);
1794 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1796 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1797 u8 *name, u8 name_len);
1798 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1799 u8 link_type, u8 addr_type, u8 reason,
1800 bool mgmt_connected);
1801 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1802 u8 link_type, u8 addr_type, u8 status);
1803 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1804 u8 addr_type, u8 status);
1805 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1806 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1808 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1810 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1811 u8 link_type, u8 addr_type, u32 value,
1813 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1814 u8 link_type, u8 addr_type, u8 status);
1815 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1816 u8 link_type, u8 addr_type, u8 status);
1817 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1818 u8 link_type, u8 addr_type);
1819 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1820 u8 link_type, u8 addr_type, u8 status);
1821 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1822 u8 link_type, u8 addr_type, u8 status);
1823 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1824 u8 link_type, u8 addr_type, u32 passkey,
1826 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1827 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1828 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1829 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1831 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1832 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
1833 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
1834 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1835 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1836 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1837 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1838 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1839 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1840 void mgmt_suspending(struct hci_dev *hdev, u8 state);
1841 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
1843 bool mgmt_powering_down(struct hci_dev *hdev);
1844 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1845 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1846 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1848 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1849 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1850 u16 max_interval, u16 latency, u16 timeout);
1851 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1852 bool mgmt_get_connectable(struct hci_dev *hdev);
1853 void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status);
1854 void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status);
1855 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
1856 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
1858 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
1860 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle);
1861 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
1862 int mgmt_add_adv_patterns_monitor_complete(struct hci_dev *hdev, u8 status);
1863 int mgmt_remove_adv_monitor_complete(struct hci_dev *hdev, u8 status);
1865 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1867 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1868 __u8 ltk[16], __u8 key_size);
1870 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1873 #define SCO_AIRMODE_MASK 0x0003
1874 #define SCO_AIRMODE_CVSD 0x0000
1875 #define SCO_AIRMODE_TRANSP 0x0003
1877 #endif /* __HCI_CORE_H */