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)
600 __u8 adv_filter_policy;
604 int (*open)(struct hci_dev *hdev);
605 int (*close)(struct hci_dev *hdev);
606 int (*flush)(struct hci_dev *hdev);
607 int (*setup)(struct hci_dev *hdev);
608 int (*shutdown)(struct hci_dev *hdev);
609 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
610 void (*notify)(struct hci_dev *hdev, unsigned int evt);
611 void (*hw_error)(struct hci_dev *hdev, u8 code);
612 int (*post_init)(struct hci_dev *hdev);
613 int (*set_diag)(struct hci_dev *hdev, bool enable);
614 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
615 void (*cmd_timeout)(struct hci_dev *hdev);
616 bool (*prevent_wake)(struct hci_dev *hdev);
619 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
622 CONN_REASON_PAIR_DEVICE,
623 CONN_REASON_L2CAP_CHAN,
624 CONN_REASON_SCO_CONNECT,
628 struct list_head list;
649 __u8 features[HCI_MAX_PAGES][8];
655 __u8 pending_sec_level;
659 __u32 passkey_notify;
660 __u8 passkey_entered;
664 __u16 auth_payload_timeout;
665 __u16 le_conn_min_interval;
666 __u16 le_conn_max_interval;
667 __u16 le_conn_interval;
668 __u16 le_conn_latency;
669 __u16 le_supv_timeout;
670 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
671 __u8 le_adv_data_len;
679 enum conn_reasons conn_reason;
682 __u16 clock_accuracy;
684 unsigned long conn_info_timestamp;
692 struct sk_buff_head data_q;
693 struct list_head chan_list;
695 struct delayed_work disc_work;
696 struct delayed_work auto_accept_work;
697 struct delayed_work idle_work;
698 struct delayed_work le_conn_timeout;
699 struct work_struct le_scan_cleanup;
702 struct dentry *debugfs;
704 struct hci_dev *hdev;
707 struct amp_mgr *amp_mgr;
709 struct hci_conn *link;
711 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
712 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
713 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
717 struct list_head list;
719 struct hci_conn *conn;
720 struct sk_buff_head data_q;
726 struct hci_conn_params {
727 struct list_head list;
728 struct list_head action;
733 u16 conn_min_interval;
734 u16 conn_max_interval;
736 u16 supervision_timeout;
739 HCI_AUTO_CONN_DISABLED,
740 HCI_AUTO_CONN_REPORT,
741 HCI_AUTO_CONN_DIRECT,
742 HCI_AUTO_CONN_ALWAYS,
743 HCI_AUTO_CONN_LINK_LOSS,
744 HCI_AUTO_CONN_EXPLICIT,
747 struct hci_conn *conn;
748 bool explicit_connect;
752 extern struct list_head hci_dev_list;
753 extern struct list_head hci_cb_list;
754 extern rwlock_t hci_dev_list_lock;
755 extern struct mutex hci_cb_list_lock;
757 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
758 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
759 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
760 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
761 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
762 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
763 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
765 #define hci_dev_clear_volatile_flags(hdev) \
767 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
768 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
769 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
770 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
773 /* ----- HCI interface to upper protocols ----- */
774 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
775 int l2cap_disconn_ind(struct hci_conn *hcon);
776 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
778 #if IS_ENABLED(CONFIG_BT_BREDR)
779 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
780 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
782 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
788 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
793 /* ----- Inquiry cache ----- */
794 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
795 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
797 static inline void discovery_init(struct hci_dev *hdev)
799 hdev->discovery.state = DISCOVERY_STOPPED;
800 INIT_LIST_HEAD(&hdev->discovery.all);
801 INIT_LIST_HEAD(&hdev->discovery.unknown);
802 INIT_LIST_HEAD(&hdev->discovery.resolve);
803 hdev->discovery.report_invalid_rssi = true;
804 hdev->discovery.rssi = HCI_RSSI_INVALID;
807 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
809 hdev->discovery.result_filtering = false;
810 hdev->discovery.report_invalid_rssi = true;
811 hdev->discovery.rssi = HCI_RSSI_INVALID;
812 hdev->discovery.uuid_count = 0;
813 kfree(hdev->discovery.uuids);
814 hdev->discovery.uuids = NULL;
815 hdev->discovery.scan_start = 0;
816 hdev->discovery.scan_duration = 0;
819 bool hci_discovery_active(struct hci_dev *hdev);
821 void hci_discovery_set_state(struct hci_dev *hdev, int state);
823 static inline int inquiry_cache_empty(struct hci_dev *hdev)
825 return list_empty(&hdev->discovery.all);
828 static inline long inquiry_cache_age(struct hci_dev *hdev)
830 struct discovery_state *c = &hdev->discovery;
831 return jiffies - c->timestamp;
834 static inline long inquiry_entry_age(struct inquiry_entry *e)
836 return jiffies - e->timestamp;
839 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
841 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
843 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
846 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
847 struct inquiry_entry *ie);
848 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
850 void hci_inquiry_cache_flush(struct hci_dev *hdev);
852 /* ----- HCI Connections ----- */
855 HCI_CONN_REAUTH_PEND,
856 HCI_CONN_ENCRYPT_PEND,
857 HCI_CONN_RSWITCH_PEND,
858 HCI_CONN_MODE_CHANGE_PEND,
859 HCI_CONN_SCO_SETUP_PEND,
860 HCI_CONN_MGMT_CONNECTED,
861 HCI_CONN_SSP_ENABLED,
870 HCI_CONN_STK_ENCRYPT,
871 HCI_CONN_AUTH_INITIATOR,
873 HCI_CONN_PARAM_REMOVAL_PEND,
874 HCI_CONN_NEW_LINK_KEY,
876 HCI_CONN_AUTH_FAILURE,
879 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
881 struct hci_dev *hdev = conn->hdev;
882 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
883 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
886 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
888 struct hci_dev *hdev = conn->hdev;
889 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
890 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
893 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
895 struct hci_conn_hash *h = &hdev->conn_hash;
896 list_add_rcu(&c->list, &h->list);
906 if (c->role == HCI_ROLE_SLAVE)
907 h->le_num_peripheral++;
916 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
918 struct hci_conn_hash *h = &hdev->conn_hash;
920 list_del_rcu(&c->list);
932 if (c->role == HCI_ROLE_SLAVE)
933 h->le_num_peripheral--;
942 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
944 struct hci_conn_hash *h = &hdev->conn_hash;
960 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
962 struct hci_conn_hash *c = &hdev->conn_hash;
964 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
967 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
969 struct hci_conn_hash *h = &hdev->conn_hash;
971 __u8 type = INVALID_LINK;
975 list_for_each_entry_rcu(c, &h->list, list) {
976 if (c->handle == handle) {
987 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
990 struct hci_conn_hash *h = &hdev->conn_hash;
995 list_for_each_entry_rcu(c, &h->list, list) {
996 if (c->handle == handle) {
1006 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
1007 __u8 type, bdaddr_t *ba)
1009 struct hci_conn_hash *h = &hdev->conn_hash;
1014 list_for_each_entry_rcu(c, &h->list, list) {
1015 if (c->type == type && !bacmp(&c->dst, ba)) {
1026 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
1030 struct hci_conn_hash *h = &hdev->conn_hash;
1035 list_for_each_entry_rcu(c, &h->list, list) {
1036 if (c->type != LE_LINK)
1039 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1050 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1051 __u8 type, __u16 state)
1053 struct hci_conn_hash *h = &hdev->conn_hash;
1058 list_for_each_entry_rcu(c, &h->list, list) {
1059 if (c->type == type && c->state == state) {
1070 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1072 struct hci_conn_hash *h = &hdev->conn_hash;
1077 list_for_each_entry_rcu(c, &h->list, list) {
1078 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1079 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1090 int hci_disconnect(struct hci_conn *conn, __u8 reason);
1091 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1092 void hci_sco_setup(struct hci_conn *conn, __u8 status);
1094 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1096 int hci_conn_del(struct hci_conn *conn);
1097 void hci_conn_hash_flush(struct hci_dev *hdev);
1098 void hci_conn_check_pending(struct hci_dev *hdev);
1100 struct hci_chan *hci_chan_create(struct hci_conn *conn);
1101 void hci_chan_del(struct hci_chan *chan);
1102 void hci_chan_list_flush(struct hci_conn *conn);
1103 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1105 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1106 u8 dst_type, u8 sec_level,
1108 enum conn_reasons conn_reason);
1109 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1110 u8 dst_type, u8 sec_level, u16 conn_timeout,
1111 u8 role, bdaddr_t *direct_rpa);
1112 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1113 u8 sec_level, u8 auth_type,
1114 enum conn_reasons conn_reason);
1115 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1117 int hci_conn_check_link_mode(struct hci_conn *conn);
1118 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1119 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1121 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1123 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1125 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
1128 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1129 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1130 * working or anything else. They just guarantee that the object is available
1131 * and can be dereferenced. So you can use its locks, local variables and any
1132 * other constant data.
1133 * Before accessing runtime data, you _must_ lock the object and then check that
1134 * it is still running. As soon as you release the locks, the connection might
1135 * get dropped, though.
1137 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1138 * how long the underlying connection is held. So every channel that runs on the
1139 * hci_conn object calls this to prevent the connection from disappearing. As
1140 * long as you hold a device, you must also guarantee that you have a valid
1141 * reference to the device via hci_conn_get() (or the initial reference from
1143 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1144 * break because nobody cares for that. But this means, we cannot use
1145 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1148 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1150 get_device(&conn->dev);
1154 static inline void hci_conn_put(struct hci_conn *conn)
1156 put_device(&conn->dev);
1159 static inline void hci_conn_hold(struct hci_conn *conn)
1161 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1163 atomic_inc(&conn->refcnt);
1164 cancel_delayed_work(&conn->disc_work);
1167 static inline void hci_conn_drop(struct hci_conn *conn)
1169 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1171 if (atomic_dec_and_test(&conn->refcnt)) {
1172 unsigned long timeo;
1174 switch (conn->type) {
1177 cancel_delayed_work(&conn->idle_work);
1178 if (conn->state == BT_CONNECTED) {
1179 timeo = conn->disc_timeout;
1188 timeo = conn->disc_timeout;
1196 cancel_delayed_work(&conn->disc_work);
1197 queue_delayed_work(conn->hdev->workqueue,
1198 &conn->disc_work, timeo);
1202 /* ----- HCI Devices ----- */
1203 static inline void hci_dev_put(struct hci_dev *d)
1205 BT_DBG("%s orig refcnt %d", d->name,
1206 kref_read(&d->dev.kobj.kref));
1208 put_device(&d->dev);
1211 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1213 BT_DBG("%s orig refcnt %d", d->name,
1214 kref_read(&d->dev.kobj.kref));
1216 get_device(&d->dev);
1220 #define hci_dev_lock(d) mutex_lock(&d->lock)
1221 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
1223 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1224 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1226 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1228 return dev_get_drvdata(&hdev->dev);
1231 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1233 dev_set_drvdata(&hdev->dev, data);
1236 static inline void *hci_get_priv(struct hci_dev *hdev)
1238 return (char *)hdev + sizeof(*hdev);
1241 struct hci_dev *hci_dev_get(int index);
1242 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1244 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);
1246 static inline struct hci_dev *hci_alloc_dev(void)
1248 return hci_alloc_dev_priv(0);
1251 void hci_free_dev(struct hci_dev *hdev);
1252 int hci_register_dev(struct hci_dev *hdev);
1253 void hci_unregister_dev(struct hci_dev *hdev);
1254 void hci_release_dev(struct hci_dev *hdev);
1255 int hci_suspend_dev(struct hci_dev *hdev);
1256 int hci_resume_dev(struct hci_dev *hdev);
1257 int hci_reset_dev(struct hci_dev *hdev);
1258 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1259 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1260 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1261 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1263 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1265 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
1266 hdev->msft_opcode = opcode;
1270 static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1272 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
1273 hdev->aosp_capable = true;
1277 int hci_dev_open(__u16 dev);
1278 int hci_dev_close(__u16 dev);
1279 int hci_dev_do_close(struct hci_dev *hdev);
1280 int hci_dev_reset(__u16 dev);
1281 int hci_dev_reset_stat(__u16 dev);
1282 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1283 int hci_get_dev_list(void __user *arg);
1284 int hci_get_dev_info(void __user *arg);
1285 int hci_get_conn_list(void __user *arg);
1286 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1287 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1288 int hci_inquiry(void __user *arg);
1290 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1291 bdaddr_t *bdaddr, u8 type);
1292 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1293 struct list_head *list, bdaddr_t *bdaddr,
1295 struct bdaddr_list_with_flags *
1296 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1298 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1299 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1300 u8 type, u8 *peer_irk, u8 *local_irk);
1301 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1302 u8 type, u32 flags);
1303 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1304 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1306 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1308 void hci_bdaddr_list_clear(struct list_head *list);
1310 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1311 bdaddr_t *addr, u8 addr_type);
1312 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1313 bdaddr_t *addr, u8 addr_type);
1314 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1315 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1317 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1321 void hci_uuids_clear(struct hci_dev *hdev);
1323 void hci_link_keys_clear(struct hci_dev *hdev);
1324 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1325 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1326 bdaddr_t *bdaddr, u8 *val, u8 type,
1327 u8 pin_len, bool *persistent);
1328 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1329 u8 addr_type, u8 type, u8 authenticated,
1330 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1331 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1332 u8 addr_type, u8 role);
1333 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1334 void hci_smp_ltks_clear(struct hci_dev *hdev);
1335 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1337 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1338 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1340 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1341 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1342 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1343 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1344 void hci_blocked_keys_clear(struct hci_dev *hdev);
1345 void hci_smp_irks_clear(struct hci_dev *hdev);
1347 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1349 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1350 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1351 bdaddr_t *bdaddr, u8 bdaddr_type);
1352 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1353 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1354 u8 *hash256, u8 *rand256);
1355 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1358 void hci_adv_instances_clear(struct hci_dev *hdev);
1359 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1360 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1361 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1362 u16 adv_data_len, u8 *adv_data,
1363 u16 scan_rsp_len, u8 *scan_rsp_data,
1364 u16 timeout, u16 duration, s8 tx_power,
1365 u32 min_interval, u32 max_interval);
1366 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1367 u16 adv_data_len, u8 *adv_data,
1368 u16 scan_rsp_len, u8 *scan_rsp_data);
1369 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1370 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1372 void hci_adv_monitors_clear(struct hci_dev *hdev);
1373 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1374 int hci_add_adv_patterns_monitor_complete(struct hci_dev *hdev, u8 status);
1375 int hci_remove_adv_monitor_complete(struct hci_dev *hdev, u8 status);
1376 bool hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor,
1378 bool hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle, int *err);
1379 bool hci_remove_all_adv_monitor(struct hci_dev *hdev, int *err);
1380 bool hci_is_adv_monitoring(struct hci_dev *hdev);
1381 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1383 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1385 void hci_init_sysfs(struct hci_dev *hdev);
1386 void hci_conn_init_sysfs(struct hci_conn *conn);
1387 void hci_conn_add_sysfs(struct hci_conn *conn);
1388 void hci_conn_del_sysfs(struct hci_conn *conn);
1390 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1392 /* ----- LMP capabilities ----- */
1393 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1394 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1395 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1396 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1397 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1398 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1399 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1400 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1401 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1402 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1403 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1404 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1405 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1406 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1407 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1408 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1409 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1410 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1411 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1412 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1413 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1414 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1415 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1416 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1418 /* ----- Extended LMP capabilities ----- */
1419 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1420 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1421 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1422 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1423 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1424 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1426 /* ----- Host capabilities ----- */
1427 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1428 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1429 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1430 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1432 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1433 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1434 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1435 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1436 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \
1437 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED))
1438 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \
1441 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1442 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1444 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1445 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1447 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1448 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1450 /* Use LL Privacy based address resolution if supported */
1451 #define use_ll_privacy(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1453 /* Use ext scanning if set ext scan param and ext scan enable is supported */
1454 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1455 ((dev)->commands[37] & 0x40))
1456 /* Use ext create connection if command is supported */
1457 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1459 /* Extended advertising support */
1460 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1462 /* ----- HCI protocols ----- */
1463 #define HCI_PROTO_DEFER 0x01
1465 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1466 __u8 type, __u8 *flags)
1470 return l2cap_connect_ind(hdev, bdaddr);
1474 return sco_connect_ind(hdev, bdaddr, flags);
1477 BT_ERR("unknown link type %d", type);
1482 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1484 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1485 return HCI_ERROR_REMOTE_USER_TERM;
1487 return l2cap_disconn_ind(conn);
1490 /* ----- HCI callbacks ----- */
1492 struct list_head list;
1496 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1497 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1498 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1500 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1501 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1504 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1508 mutex_lock(&hci_cb_list_lock);
1509 list_for_each_entry(cb, &hci_cb_list, list) {
1510 if (cb->connect_cfm)
1511 cb->connect_cfm(conn, status);
1513 mutex_unlock(&hci_cb_list_lock);
1515 if (conn->connect_cfm_cb)
1516 conn->connect_cfm_cb(conn, status);
1519 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1523 mutex_lock(&hci_cb_list_lock);
1524 list_for_each_entry(cb, &hci_cb_list, list) {
1525 if (cb->disconn_cfm)
1526 cb->disconn_cfm(conn, reason);
1528 mutex_unlock(&hci_cb_list_lock);
1530 if (conn->disconn_cfm_cb)
1531 conn->disconn_cfm_cb(conn, reason);
1534 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1539 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1542 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1544 mutex_lock(&hci_cb_list_lock);
1545 list_for_each_entry(cb, &hci_cb_list, list) {
1546 if (cb->security_cfm)
1547 cb->security_cfm(conn, status, encrypt);
1549 mutex_unlock(&hci_cb_list_lock);
1551 if (conn->security_cfm_cb)
1552 conn->security_cfm_cb(conn, status);
1555 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
1560 if (conn->state == BT_CONFIG) {
1562 conn->state = BT_CONNECTED;
1564 hci_connect_cfm(conn, status);
1565 hci_conn_drop(conn);
1569 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
1571 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
1577 if (conn->sec_level == BT_SECURITY_SDP)
1578 conn->sec_level = BT_SECURITY_LOW;
1580 if (conn->pending_sec_level > conn->sec_level)
1581 conn->sec_level = conn->pending_sec_level;
1584 mutex_lock(&hci_cb_list_lock);
1585 list_for_each_entry(cb, &hci_cb_list, list) {
1586 if (cb->security_cfm)
1587 cb->security_cfm(conn, status, encrypt);
1589 mutex_unlock(&hci_cb_list_lock);
1591 if (conn->security_cfm_cb)
1592 conn->security_cfm_cb(conn, status);
1595 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1599 mutex_lock(&hci_cb_list_lock);
1600 list_for_each_entry(cb, &hci_cb_list, list) {
1601 if (cb->key_change_cfm)
1602 cb->key_change_cfm(conn, status);
1604 mutex_unlock(&hci_cb_list_lock);
1607 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1612 mutex_lock(&hci_cb_list_lock);
1613 list_for_each_entry(cb, &hci_cb_list, list) {
1614 if (cb->role_switch_cfm)
1615 cb->role_switch_cfm(conn, status, role);
1617 mutex_unlock(&hci_cb_list_lock);
1620 static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
1628 while (parsed < eir_len - 1) {
1629 u8 field_len = eir[0];
1634 parsed += field_len + 1;
1636 if (parsed > eir_len)
1639 if (eir[1] != type) {
1640 eir += field_len + 1;
1644 /* Zero length data */
1649 *data_len = field_len - 1;
1657 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1659 if (addr_type != ADDR_LE_DEV_RANDOM)
1662 if ((bdaddr->b[5] & 0xc0) == 0x40)
1668 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1670 if (addr_type == ADDR_LE_DEV_PUBLIC)
1673 /* Check for Random Static address type */
1674 if ((addr->b[5] & 0xc0) == 0xc0)
1680 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1681 bdaddr_t *bdaddr, u8 addr_type)
1683 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1686 return hci_find_irk_by_rpa(hdev, bdaddr);
1689 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1694 if (min > max || min < 6 || max > 3200)
1697 if (to_multiplier < 10 || to_multiplier > 3200)
1700 if (max >= to_multiplier * 8)
1703 max_latency = (to_multiplier * 4 / max) - 1;
1704 if (latency > 499 || latency > max_latency)
1710 int hci_register_cb(struct hci_cb *hcb);
1711 int hci_unregister_cb(struct hci_cb *hcb);
1713 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1714 const void *param, u32 timeout);
1715 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1716 const void *param, u8 event, u32 timeout);
1717 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
1720 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1722 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1723 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1725 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1727 struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1728 const void *param, u32 timeout);
1730 u32 hci_conn_get_phy(struct hci_conn *conn);
1732 /* ----- HCI Sockets ----- */
1733 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1734 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1735 int flag, struct sock *skip_sk);
1736 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1737 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1738 void *data, u16 data_len, ktime_t tstamp,
1739 int flag, struct sock *skip_sk);
1741 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1743 #define HCI_MGMT_VAR_LEN BIT(0)
1744 #define HCI_MGMT_NO_HDEV BIT(1)
1745 #define HCI_MGMT_UNTRUSTED BIT(2)
1746 #define HCI_MGMT_UNCONFIGURED BIT(3)
1747 #define HCI_MGMT_HDEV_OPTIONAL BIT(4)
1749 struct hci_mgmt_handler {
1750 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1753 unsigned long flags;
1756 struct hci_mgmt_chan {
1757 struct list_head list;
1758 unsigned short channel;
1759 size_t handler_count;
1760 const struct hci_mgmt_handler *handlers;
1762 size_t tizen_handler_count;
1763 const struct hci_mgmt_handler *tizen_handlers;
1765 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1768 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1769 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1771 /* Management interface */
1772 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1773 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1774 BIT(BDADDR_LE_RANDOM))
1775 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1776 BIT(BDADDR_LE_PUBLIC) | \
1777 BIT(BDADDR_LE_RANDOM))
1779 /* These LE scan and inquiry parameters were chosen according to LE General
1780 * Discovery Procedure specification.
1782 #define DISCOV_LE_SCAN_WIN 0x12
1783 #define DISCOV_LE_SCAN_INT 0x12
1784 #define DISCOV_LE_TIMEOUT 10240 /* msec */
1785 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1786 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1787 #define DISCOV_BREDR_INQUIRY_LEN 0x08
1788 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
1789 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */
1790 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */
1792 void mgmt_fill_version_info(void *ver);
1793 int mgmt_new_settings(struct hci_dev *hdev);
1794 void mgmt_index_added(struct hci_dev *hdev);
1795 void mgmt_index_removed(struct hci_dev *hdev);
1796 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1797 void mgmt_power_on(struct hci_dev *hdev, int err);
1798 void __mgmt_power_off(struct hci_dev *hdev);
1799 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1801 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1802 u8 *name, u8 name_len);
1803 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1804 u8 link_type, u8 addr_type, u8 reason,
1805 bool mgmt_connected);
1806 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1807 u8 link_type, u8 addr_type, u8 status);
1808 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1809 u8 addr_type, u8 status);
1810 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1811 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1813 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1815 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1816 u8 link_type, u8 addr_type, u32 value,
1818 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1819 u8 link_type, u8 addr_type, u8 status);
1820 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1821 u8 link_type, u8 addr_type, u8 status);
1822 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1823 u8 link_type, u8 addr_type);
1824 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1825 u8 link_type, u8 addr_type, u8 status);
1826 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1827 u8 link_type, u8 addr_type, u8 status);
1828 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1829 u8 link_type, u8 addr_type, u32 passkey,
1831 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1832 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1833 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1834 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1836 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1837 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
1838 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
1839 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1840 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1841 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1842 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1843 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1844 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1845 void mgmt_suspending(struct hci_dev *hdev, u8 state);
1846 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
1848 bool mgmt_powering_down(struct hci_dev *hdev);
1849 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1850 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1851 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1853 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1854 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1855 u16 max_interval, u16 latency, u16 timeout);
1856 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1857 bool mgmt_get_connectable(struct hci_dev *hdev);
1858 void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status);
1859 void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status);
1860 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
1861 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
1863 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
1865 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle);
1866 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
1867 int mgmt_add_adv_patterns_monitor_complete(struct hci_dev *hdev, u8 status);
1868 int mgmt_remove_adv_monitor_complete(struct hci_dev *hdev, u8 status);
1870 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1872 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1873 __u8 ltk[16], __u8 key_size);
1875 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1878 #define SCO_AIRMODE_MASK 0x0003
1879 #define SCO_AIRMODE_CVSD 0x0000
1880 #define SCO_AIRMODE_TRANSP 0x0003
1882 #endif /* __HCI_CORE_H */