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 Core structures */
42 __u8 pscan_period_mode;
50 struct inquiry_entry {
51 struct list_head all; /* inq_cache.all */
52 struct list_head list; /* unknown or resolve */
60 struct inquiry_data data;
63 struct discovery_state {
72 struct list_head all; /* All devices found during inquiry */
73 struct list_head unknown; /* Name state not known */
74 struct list_head resolve; /* Name needs to be resolved */
76 bdaddr_t last_adv_addr;
77 u8 last_adv_addr_type;
80 u8 last_adv_data[HCI_MAX_AD_LENGTH];
82 bool report_invalid_rssi;
83 bool result_filtering;
88 unsigned long scan_start;
89 unsigned long scan_duration;
92 #define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
95 SUSPEND_PAUSE_DISCOVERY,
96 SUSPEND_UNPAUSE_DISCOVERY,
98 SUSPEND_PAUSE_ADVERTISING,
99 SUSPEND_UNPAUSE_ADVERTISING,
101 SUSPEND_SCAN_DISABLE,
103 SUSPEND_DISCONNECTING,
105 SUSPEND_POWERING_DOWN,
107 SUSPEND_PREPARE_NOTIFIER,
109 SUSPEND_SET_ADV_FILTER,
113 enum suspended_state {
115 BT_SUSPEND_DISCONNECT,
116 BT_SUSPEND_CONFIGURE_WAKE,
119 struct hci_conn_hash {
120 struct list_head list;
121 unsigned int acl_num;
122 unsigned int amp_num;
123 unsigned int sco_num;
125 unsigned int le_num_peripheral;
129 struct list_head list;
134 struct bdaddr_list_with_irk {
135 struct list_head list;
142 struct bdaddr_list_with_flags {
143 struct list_head list;
149 enum hci_conn_flags {
150 HCI_CONN_FLAG_REMOTE_WAKEUP,
154 #define hci_conn_test_flag(nr, flags) ((flags) & (1U << nr))
156 /* Make sure number of flags doesn't exceed sizeof(current_flags) */
157 static_assert(HCI_CONN_FLAG_MAX < 32);
160 struct list_head list;
167 struct list_head list;
181 struct list_head list;
194 struct list_head list;
203 struct list_head list;
207 u8 val[HCI_LINK_KEY_SIZE];
212 struct list_head list;
223 struct list_head list;
228 __u16 remaining_time;
231 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
233 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
237 bdaddr_t random_addr;
239 struct delayed_work rpa_expired_cb;
242 #define HCI_MAX_ADV_INSTANCES 5
243 #define HCI_DEFAULT_ADV_DURATION 2
245 #define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F
248 struct list_head list;
252 __u8 value[HCI_MAX_AD_LENGTH];
255 struct adv_rssi_thresholds {
258 __u16 low_threshold_timeout;
259 __u16 high_threshold_timeout;
260 __u8 sampling_period;
264 struct list_head patterns;
265 struct adv_rssi_thresholds rssi;
269 ADV_MONITOR_STATE_NOT_REGISTERED,
270 ADV_MONITOR_STATE_REGISTERED,
271 ADV_MONITOR_STATE_OFFLOADED
275 #define HCI_MIN_ADV_MONITOR_HANDLE 1
276 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32
277 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16
278 #define HCI_ADV_MONITOR_EXT_NONE 1
279 #define HCI_ADV_MONITOR_EXT_MSFT 2
281 #define HCI_MAX_SHORT_NAME_LENGTH 10
283 /* Min encryption key size to match with SMP */
284 #define HCI_MIN_ENC_KEY_SIZE 7
286 /* Default LE RPA expiry time, 15 minutes */
287 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
289 /* Default min/max age of connection information (1s/3s) */
290 #define DEFAULT_CONN_INFO_MIN_AGE 1000
291 #define DEFAULT_CONN_INFO_MAX_AGE 3000
292 /* Default authenticated payload timeout 30s */
293 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8
300 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
303 #define HCI_MAX_PAGES 3
306 struct list_head list;
316 bdaddr_t public_addr;
317 bdaddr_t random_addr;
318 bdaddr_t static_addr;
320 __u8 dev_name[HCI_MAX_NAME_LENGTH];
321 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
322 __u8 eir[HCI_MAX_EIR_LENGTH];
328 __u8 features[HCI_MAX_PAGES][8];
330 __u8 le_accept_list_size;
331 __u8 le_resolv_list_size;
332 __u8 le_num_of_adv_sets;
342 __u8 stored_max_keys;
343 __u8 stored_num_keys;
346 __u8 err_data_reporting;
347 __u16 page_scan_interval;
348 __u16 page_scan_window;
350 __u8 le_adv_channel_map;
351 __u16 le_adv_min_interval;
352 __u16 le_adv_max_interval;
354 __u16 le_scan_interval;
355 __u16 le_scan_window;
356 __u16 le_scan_int_suspend;
357 __u16 le_scan_window_suspend;
358 __u16 le_scan_int_discovery;
359 __u16 le_scan_window_discovery;
360 __u16 le_scan_int_adv_monitor;
361 __u16 le_scan_window_adv_monitor;
362 __u16 le_scan_int_connect;
363 __u16 le_scan_window_connect;
364 __u16 le_conn_min_interval;
365 __u16 le_conn_max_interval;
366 __u16 le_conn_latency;
367 __u16 le_supv_timeout;
369 __u16 le_def_tx_time;
371 __u16 le_max_tx_time;
373 __u16 le_max_rx_time;
374 __u8 le_max_key_size;
375 __u8 le_min_key_size;
376 __u16 discov_interleaved_timeout;
377 __u16 conn_info_min_age;
378 __u16 conn_info_max_age;
379 __u16 auth_payload_timeout;
380 __u8 min_enc_key_size;
381 __u8 max_enc_key_size;
386 __u16 advmon_allowlist_duration;
387 __u16 advmon_no_filter_duration;
388 __u8 enable_advmon_interleave_scan;
395 __u8 def_page_scan_type;
396 __u16 def_page_scan_int;
397 __u16 def_page_scan_window;
398 __u8 def_inq_scan_type;
399 __u16 def_inq_scan_int;
400 __u16 def_inq_scan_window;
402 __u16 def_page_timeout;
403 __u16 def_multi_adv_rotation_duration;
404 __u16 def_le_autoconnect_timeout;
405 __s8 min_le_tx_power;
406 __s8 max_le_tx_power;
414 __u16 sniff_min_interval;
415 __u16 sniff_max_interval;
420 __u32 amp_min_latency;
424 __u16 amp_assoc_size;
425 __u32 amp_max_flush_to;
426 __u32 amp_be_flush_to;
428 struct amp_assoc loc_assoc;
432 unsigned int auto_accept_delay;
434 unsigned long quirks;
437 unsigned int acl_cnt;
438 unsigned int sco_cnt;
441 unsigned int acl_mtu;
442 unsigned int sco_mtu;
444 unsigned int acl_pkts;
445 unsigned int sco_pkts;
446 unsigned int le_pkts;
453 unsigned long acl_last_tx;
454 unsigned long sco_last_tx;
455 unsigned long le_last_tx;
460 struct workqueue_struct *workqueue;
461 struct workqueue_struct *req_workqueue;
463 struct work_struct power_on;
464 struct delayed_work power_off;
465 struct work_struct error_reset;
467 __u16 discov_timeout;
468 struct delayed_work discov_off;
470 struct delayed_work service_cache;
472 struct delayed_work cmd_timer;
473 struct delayed_work ncmd_timer;
475 struct work_struct rx_work;
476 struct work_struct cmd_work;
477 struct work_struct tx_work;
479 struct work_struct discov_update;
480 struct work_struct bg_scan_update;
481 struct work_struct scan_update;
482 struct work_struct connectable_update;
483 struct work_struct discoverable_update;
484 struct delayed_work le_scan_disable;
485 struct delayed_work le_scan_restart;
487 struct sk_buff_head rx_q;
488 struct sk_buff_head raw_q;
489 struct sk_buff_head cmd_q;
491 struct sk_buff *sent_cmd;
493 struct mutex req_lock;
494 wait_queue_head_t req_wait_q;
497 struct sk_buff *req_skb;
500 void *smp_bredr_data;
502 struct discovery_state discovery;
504 int discovery_old_state;
505 bool discovery_paused;
506 int advertising_old_state;
507 bool advertising_paused;
509 struct notifier_block suspend_notifier;
510 struct work_struct suspend_prepare;
511 enum suspended_state suspend_state_next;
512 enum suspended_state suspend_state;
513 bool scanning_paused;
519 wait_queue_head_t suspend_wait_q;
520 DECLARE_BITMAP(suspend_tasks, __SUSPEND_NUM_TASKS);
522 struct hci_conn_hash conn_hash;
524 struct list_head mgmt_pending;
525 struct list_head reject_list;
526 struct list_head accept_list;
527 struct list_head uuids;
528 struct list_head link_keys;
529 struct list_head long_term_keys;
530 struct list_head identity_resolving_keys;
531 struct list_head remote_oob_data;
532 struct list_head le_accept_list;
533 struct list_head le_resolv_list;
534 struct list_head le_conn_params;
535 struct list_head pend_le_conns;
536 struct list_head pend_le_reports;
537 struct list_head blocked_keys;
539 struct hci_dev_stats stat;
545 struct dentry *debugfs;
549 struct rfkill *rfkill;
551 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
554 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
556 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
557 __u8 scan_rsp_data_len;
559 struct list_head adv_instances;
560 unsigned int adv_instance_cnt;
561 __u8 cur_adv_instance;
562 __u16 adv_instance_timeout;
563 struct delayed_work adv_instance_expire;
565 struct idr adv_monitors_idr;
566 unsigned int adv_monitors_cnt;
570 struct delayed_work rpa_expired;
574 INTERLEAVE_SCAN_NONE,
575 INTERLEAVE_SCAN_NO_FILTER,
576 INTERLEAVE_SCAN_ALLOWLIST
577 } interleave_scan_state;
579 struct delayed_work interleave_scan;
581 #if IS_ENABLED(CONFIG_BT_LEDS)
582 struct led_trigger *power_led;
585 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
588 bool msft_curve_validity;
591 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
595 int (*open)(struct hci_dev *hdev);
596 int (*close)(struct hci_dev *hdev);
597 int (*flush)(struct hci_dev *hdev);
598 int (*setup)(struct hci_dev *hdev);
599 int (*shutdown)(struct hci_dev *hdev);
600 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
601 void (*notify)(struct hci_dev *hdev, unsigned int evt);
602 void (*hw_error)(struct hci_dev *hdev, u8 code);
603 int (*post_init)(struct hci_dev *hdev);
604 int (*set_diag)(struct hci_dev *hdev, bool enable);
605 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
606 void (*cmd_timeout)(struct hci_dev *hdev);
607 bool (*prevent_wake)(struct hci_dev *hdev);
610 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
613 CONN_REASON_PAIR_DEVICE,
614 CONN_REASON_L2CAP_CHAN,
615 CONN_REASON_SCO_CONNECT,
619 struct list_head list;
639 __u8 features[HCI_MAX_PAGES][8];
645 __u8 pending_sec_level;
649 __u32 passkey_notify;
650 __u8 passkey_entered;
654 __u16 auth_payload_timeout;
655 __u16 le_conn_min_interval;
656 __u16 le_conn_max_interval;
657 __u16 le_conn_interval;
658 __u16 le_conn_latency;
659 __u16 le_supv_timeout;
660 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
661 __u8 le_adv_data_len;
669 enum conn_reasons conn_reason;
672 __u16 clock_accuracy;
674 unsigned long conn_info_timestamp;
682 struct sk_buff_head data_q;
683 struct list_head chan_list;
685 struct delayed_work disc_work;
686 struct delayed_work auto_accept_work;
687 struct delayed_work idle_work;
688 struct delayed_work le_conn_timeout;
689 struct work_struct le_scan_cleanup;
692 struct dentry *debugfs;
694 struct hci_dev *hdev;
697 struct amp_mgr *amp_mgr;
699 struct hci_conn *link;
701 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
702 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
703 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
707 struct list_head list;
709 struct hci_conn *conn;
710 struct sk_buff_head data_q;
716 struct hci_conn_params {
717 struct list_head list;
718 struct list_head action;
723 u16 conn_min_interval;
724 u16 conn_max_interval;
726 u16 supervision_timeout;
729 HCI_AUTO_CONN_DISABLED,
730 HCI_AUTO_CONN_REPORT,
731 HCI_AUTO_CONN_DIRECT,
732 HCI_AUTO_CONN_ALWAYS,
733 HCI_AUTO_CONN_LINK_LOSS,
734 HCI_AUTO_CONN_EXPLICIT,
737 struct hci_conn *conn;
738 bool explicit_connect;
742 extern struct list_head hci_dev_list;
743 extern struct list_head hci_cb_list;
744 extern rwlock_t hci_dev_list_lock;
745 extern struct mutex hci_cb_list_lock;
747 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
748 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
749 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
750 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
751 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
752 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
753 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
755 #define hci_dev_clear_volatile_flags(hdev) \
757 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
758 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
759 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
760 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
763 /* ----- HCI interface to upper protocols ----- */
764 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
765 int l2cap_disconn_ind(struct hci_conn *hcon);
766 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
768 #if IS_ENABLED(CONFIG_BT_BREDR)
769 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
770 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
772 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
778 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
783 /* ----- Inquiry cache ----- */
784 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
785 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
787 static inline void discovery_init(struct hci_dev *hdev)
789 hdev->discovery.state = DISCOVERY_STOPPED;
790 INIT_LIST_HEAD(&hdev->discovery.all);
791 INIT_LIST_HEAD(&hdev->discovery.unknown);
792 INIT_LIST_HEAD(&hdev->discovery.resolve);
793 hdev->discovery.report_invalid_rssi = true;
794 hdev->discovery.rssi = HCI_RSSI_INVALID;
797 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
799 hdev->discovery.result_filtering = false;
800 hdev->discovery.report_invalid_rssi = true;
801 hdev->discovery.rssi = HCI_RSSI_INVALID;
802 hdev->discovery.uuid_count = 0;
803 kfree(hdev->discovery.uuids);
804 hdev->discovery.uuids = NULL;
805 hdev->discovery.scan_start = 0;
806 hdev->discovery.scan_duration = 0;
809 bool hci_discovery_active(struct hci_dev *hdev);
811 void hci_discovery_set_state(struct hci_dev *hdev, int state);
813 static inline int inquiry_cache_empty(struct hci_dev *hdev)
815 return list_empty(&hdev->discovery.all);
818 static inline long inquiry_cache_age(struct hci_dev *hdev)
820 struct discovery_state *c = &hdev->discovery;
821 return jiffies - c->timestamp;
824 static inline long inquiry_entry_age(struct inquiry_entry *e)
826 return jiffies - e->timestamp;
829 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
831 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
833 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
836 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
837 struct inquiry_entry *ie);
838 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
840 void hci_inquiry_cache_flush(struct hci_dev *hdev);
842 /* ----- HCI Connections ----- */
845 HCI_CONN_REAUTH_PEND,
846 HCI_CONN_ENCRYPT_PEND,
847 HCI_CONN_RSWITCH_PEND,
848 HCI_CONN_MODE_CHANGE_PEND,
849 HCI_CONN_SCO_SETUP_PEND,
850 HCI_CONN_MGMT_CONNECTED,
851 HCI_CONN_SSP_ENABLED,
860 HCI_CONN_STK_ENCRYPT,
861 HCI_CONN_AUTH_INITIATOR,
863 HCI_CONN_PARAM_REMOVAL_PEND,
864 HCI_CONN_NEW_LINK_KEY,
866 HCI_CONN_AUTH_FAILURE,
869 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
871 struct hci_dev *hdev = conn->hdev;
872 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
873 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
876 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
878 struct hci_dev *hdev = conn->hdev;
879 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
880 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
883 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
885 struct hci_conn_hash *h = &hdev->conn_hash;
886 list_add_rcu(&c->list, &h->list);
896 if (c->role == HCI_ROLE_SLAVE)
897 h->le_num_peripheral++;
906 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
908 struct hci_conn_hash *h = &hdev->conn_hash;
910 list_del_rcu(&c->list);
922 if (c->role == HCI_ROLE_SLAVE)
923 h->le_num_peripheral--;
932 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
934 struct hci_conn_hash *h = &hdev->conn_hash;
950 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
952 struct hci_conn_hash *c = &hdev->conn_hash;
954 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
957 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
959 struct hci_conn_hash *h = &hdev->conn_hash;
961 __u8 type = INVALID_LINK;
965 list_for_each_entry_rcu(c, &h->list, list) {
966 if (c->handle == handle) {
977 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
980 struct hci_conn_hash *h = &hdev->conn_hash;
985 list_for_each_entry_rcu(c, &h->list, list) {
986 if (c->handle == handle) {
996 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
997 __u8 type, bdaddr_t *ba)
999 struct hci_conn_hash *h = &hdev->conn_hash;
1004 list_for_each_entry_rcu(c, &h->list, list) {
1005 if (c->type == type && !bacmp(&c->dst, ba)) {
1016 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
1020 struct hci_conn_hash *h = &hdev->conn_hash;
1025 list_for_each_entry_rcu(c, &h->list, list) {
1026 if (c->type != LE_LINK)
1029 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1040 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1041 __u8 type, __u16 state)
1043 struct hci_conn_hash *h = &hdev->conn_hash;
1048 list_for_each_entry_rcu(c, &h->list, list) {
1049 if (c->type == type && c->state == state) {
1060 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1062 struct hci_conn_hash *h = &hdev->conn_hash;
1067 list_for_each_entry_rcu(c, &h->list, list) {
1068 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1069 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1080 int hci_disconnect(struct hci_conn *conn, __u8 reason);
1081 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1082 void hci_sco_setup(struct hci_conn *conn, __u8 status);
1084 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1086 int hci_conn_del(struct hci_conn *conn);
1087 void hci_conn_hash_flush(struct hci_dev *hdev);
1088 void hci_conn_check_pending(struct hci_dev *hdev);
1090 struct hci_chan *hci_chan_create(struct hci_conn *conn);
1091 void hci_chan_del(struct hci_chan *chan);
1092 void hci_chan_list_flush(struct hci_conn *conn);
1093 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1095 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1096 u8 dst_type, u8 sec_level,
1098 enum conn_reasons conn_reason);
1099 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1100 u8 dst_type, u8 sec_level, u16 conn_timeout,
1101 u8 role, bdaddr_t *direct_rpa);
1102 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1103 u8 sec_level, u8 auth_type,
1104 enum conn_reasons conn_reason);
1105 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1107 int hci_conn_check_link_mode(struct hci_conn *conn);
1108 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1109 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1111 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1113 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1115 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
1118 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1119 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1120 * working or anything else. They just guarantee that the object is available
1121 * and can be dereferenced. So you can use its locks, local variables and any
1122 * other constant data.
1123 * Before accessing runtime data, you _must_ lock the object and then check that
1124 * it is still running. As soon as you release the locks, the connection might
1125 * get dropped, though.
1127 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1128 * how long the underlying connection is held. So every channel that runs on the
1129 * hci_conn object calls this to prevent the connection from disappearing. As
1130 * long as you hold a device, you must also guarantee that you have a valid
1131 * reference to the device via hci_conn_get() (or the initial reference from
1133 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1134 * break because nobody cares for that. But this means, we cannot use
1135 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1138 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1140 get_device(&conn->dev);
1144 static inline void hci_conn_put(struct hci_conn *conn)
1146 put_device(&conn->dev);
1149 static inline void hci_conn_hold(struct hci_conn *conn)
1151 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1153 atomic_inc(&conn->refcnt);
1154 cancel_delayed_work(&conn->disc_work);
1157 static inline void hci_conn_drop(struct hci_conn *conn)
1159 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1161 if (atomic_dec_and_test(&conn->refcnt)) {
1162 unsigned long timeo;
1164 switch (conn->type) {
1167 cancel_delayed_work(&conn->idle_work);
1168 if (conn->state == BT_CONNECTED) {
1169 timeo = conn->disc_timeout;
1178 timeo = conn->disc_timeout;
1186 cancel_delayed_work(&conn->disc_work);
1187 queue_delayed_work(conn->hdev->workqueue,
1188 &conn->disc_work, timeo);
1192 /* ----- HCI Devices ----- */
1193 static inline void hci_dev_put(struct hci_dev *d)
1195 BT_DBG("%s orig refcnt %d", d->name,
1196 kref_read(&d->dev.kobj.kref));
1198 put_device(&d->dev);
1201 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1203 BT_DBG("%s orig refcnt %d", d->name,
1204 kref_read(&d->dev.kobj.kref));
1206 get_device(&d->dev);
1210 #define hci_dev_lock(d) mutex_lock(&d->lock)
1211 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
1213 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1214 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1216 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1218 return dev_get_drvdata(&hdev->dev);
1221 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1223 dev_set_drvdata(&hdev->dev, data);
1226 struct hci_dev *hci_dev_get(int index);
1227 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1229 struct hci_dev *hci_alloc_dev(void);
1230 void hci_free_dev(struct hci_dev *hdev);
1231 int hci_register_dev(struct hci_dev *hdev);
1232 void hci_unregister_dev(struct hci_dev *hdev);
1233 void hci_cleanup_dev(struct hci_dev *hdev);
1234 int hci_suspend_dev(struct hci_dev *hdev);
1235 int hci_resume_dev(struct hci_dev *hdev);
1236 int hci_reset_dev(struct hci_dev *hdev);
1237 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1238 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1239 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1240 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1242 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1244 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
1245 hdev->msft_opcode = opcode;
1249 static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1251 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
1252 hdev->aosp_capable = true;
1256 int hci_dev_open(__u16 dev);
1257 int hci_dev_close(__u16 dev);
1258 int hci_dev_do_close(struct hci_dev *hdev);
1259 int hci_dev_reset(__u16 dev);
1260 int hci_dev_reset_stat(__u16 dev);
1261 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1262 int hci_get_dev_list(void __user *arg);
1263 int hci_get_dev_info(void __user *arg);
1264 int hci_get_conn_list(void __user *arg);
1265 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1266 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1267 int hci_inquiry(void __user *arg);
1269 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1270 bdaddr_t *bdaddr, u8 type);
1271 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1272 struct list_head *list, bdaddr_t *bdaddr,
1274 struct bdaddr_list_with_flags *
1275 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1277 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1278 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1279 u8 type, u8 *peer_irk, u8 *local_irk);
1280 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1281 u8 type, u32 flags);
1282 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1283 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1285 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1287 void hci_bdaddr_list_clear(struct list_head *list);
1289 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1290 bdaddr_t *addr, u8 addr_type);
1291 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1292 bdaddr_t *addr, u8 addr_type);
1293 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1294 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1296 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1300 void hci_uuids_clear(struct hci_dev *hdev);
1302 void hci_link_keys_clear(struct hci_dev *hdev);
1303 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1304 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1305 bdaddr_t *bdaddr, u8 *val, u8 type,
1306 u8 pin_len, bool *persistent);
1307 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1308 u8 addr_type, u8 type, u8 authenticated,
1309 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1310 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1311 u8 addr_type, u8 role);
1312 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1313 void hci_smp_ltks_clear(struct hci_dev *hdev);
1314 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1316 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1317 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1319 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1320 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1321 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1322 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1323 void hci_blocked_keys_clear(struct hci_dev *hdev);
1324 void hci_smp_irks_clear(struct hci_dev *hdev);
1326 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1328 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1329 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1330 bdaddr_t *bdaddr, u8 bdaddr_type);
1331 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1332 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1333 u8 *hash256, u8 *rand256);
1334 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1337 void hci_adv_instances_clear(struct hci_dev *hdev);
1338 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1339 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1340 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1341 u16 adv_data_len, u8 *adv_data,
1342 u16 scan_rsp_len, u8 *scan_rsp_data,
1343 u16 timeout, u16 duration, s8 tx_power,
1344 u32 min_interval, u32 max_interval);
1345 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1346 u16 adv_data_len, u8 *adv_data,
1347 u16 scan_rsp_len, u8 *scan_rsp_data);
1348 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1349 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1351 void hci_adv_monitors_clear(struct hci_dev *hdev);
1352 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1353 int hci_add_adv_patterns_monitor_complete(struct hci_dev *hdev, u8 status);
1354 int hci_remove_adv_monitor_complete(struct hci_dev *hdev, u8 status);
1355 bool hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor,
1357 bool hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle, int *err);
1358 bool hci_remove_all_adv_monitor(struct hci_dev *hdev, int *err);
1359 bool hci_is_adv_monitoring(struct hci_dev *hdev);
1360 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1362 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1364 void hci_init_sysfs(struct hci_dev *hdev);
1365 void hci_conn_init_sysfs(struct hci_conn *conn);
1366 void hci_conn_add_sysfs(struct hci_conn *conn);
1367 void hci_conn_del_sysfs(struct hci_conn *conn);
1369 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1371 /* ----- LMP capabilities ----- */
1372 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1373 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1374 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1375 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1376 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1377 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1378 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1379 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1380 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1381 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1382 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1383 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1384 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1385 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1386 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1387 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1388 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1389 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1390 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1391 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1392 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M)
1393 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M)
1394 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1395 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1397 /* ----- Extended LMP capabilities ----- */
1398 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1399 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1400 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1401 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1402 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1403 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1405 /* ----- Host capabilities ----- */
1406 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1407 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1408 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1409 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1411 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1412 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1413 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1414 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1416 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1417 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1419 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1420 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1422 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1423 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1425 /* Use LL Privacy based address resolution if supported */
1426 #define use_ll_privacy(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1428 /* Use ext scanning if set ext scan param and ext scan enable is supported */
1429 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1430 ((dev)->commands[37] & 0x40))
1431 /* Use ext create connection if command is supported */
1432 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1434 /* Extended advertising support */
1435 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1437 /* ----- HCI protocols ----- */
1438 #define HCI_PROTO_DEFER 0x01
1440 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1441 __u8 type, __u8 *flags)
1445 return l2cap_connect_ind(hdev, bdaddr);
1449 return sco_connect_ind(hdev, bdaddr, flags);
1452 BT_ERR("unknown link type %d", type);
1457 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1459 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1460 return HCI_ERROR_REMOTE_USER_TERM;
1462 return l2cap_disconn_ind(conn);
1465 /* ----- HCI callbacks ----- */
1467 struct list_head list;
1471 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1472 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1473 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1475 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1476 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1479 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1483 mutex_lock(&hci_cb_list_lock);
1484 list_for_each_entry(cb, &hci_cb_list, list) {
1485 if (cb->connect_cfm)
1486 cb->connect_cfm(conn, status);
1488 mutex_unlock(&hci_cb_list_lock);
1490 if (conn->connect_cfm_cb)
1491 conn->connect_cfm_cb(conn, status);
1494 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1498 mutex_lock(&hci_cb_list_lock);
1499 list_for_each_entry(cb, &hci_cb_list, list) {
1500 if (cb->disconn_cfm)
1501 cb->disconn_cfm(conn, reason);
1503 mutex_unlock(&hci_cb_list_lock);
1505 if (conn->disconn_cfm_cb)
1506 conn->disconn_cfm_cb(conn, reason);
1509 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1514 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1517 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1519 mutex_lock(&hci_cb_list_lock);
1520 list_for_each_entry(cb, &hci_cb_list, list) {
1521 if (cb->security_cfm)
1522 cb->security_cfm(conn, status, encrypt);
1524 mutex_unlock(&hci_cb_list_lock);
1526 if (conn->security_cfm_cb)
1527 conn->security_cfm_cb(conn, status);
1530 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
1535 if (conn->state == BT_CONFIG) {
1537 conn->state = BT_CONNECTED;
1539 hci_connect_cfm(conn, status);
1540 hci_conn_drop(conn);
1544 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
1546 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
1552 if (conn->sec_level == BT_SECURITY_SDP)
1553 conn->sec_level = BT_SECURITY_LOW;
1555 if (conn->pending_sec_level > conn->sec_level)
1556 conn->sec_level = conn->pending_sec_level;
1559 mutex_lock(&hci_cb_list_lock);
1560 list_for_each_entry(cb, &hci_cb_list, list) {
1561 if (cb->security_cfm)
1562 cb->security_cfm(conn, status, encrypt);
1564 mutex_unlock(&hci_cb_list_lock);
1566 if (conn->security_cfm_cb)
1567 conn->security_cfm_cb(conn, status);
1570 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1574 mutex_lock(&hci_cb_list_lock);
1575 list_for_each_entry(cb, &hci_cb_list, list) {
1576 if (cb->key_change_cfm)
1577 cb->key_change_cfm(conn, status);
1579 mutex_unlock(&hci_cb_list_lock);
1582 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1587 mutex_lock(&hci_cb_list_lock);
1588 list_for_each_entry(cb, &hci_cb_list, list) {
1589 if (cb->role_switch_cfm)
1590 cb->role_switch_cfm(conn, status, role);
1592 mutex_unlock(&hci_cb_list_lock);
1595 static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
1603 while (parsed < eir_len - 1) {
1604 u8 field_len = eir[0];
1609 parsed += field_len + 1;
1611 if (parsed > eir_len)
1614 if (eir[1] != type) {
1615 eir += field_len + 1;
1619 /* Zero length data */
1624 *data_len = field_len - 1;
1632 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1634 if (addr_type != ADDR_LE_DEV_RANDOM)
1637 if ((bdaddr->b[5] & 0xc0) == 0x40)
1643 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1645 if (addr_type == ADDR_LE_DEV_PUBLIC)
1648 /* Check for Random Static address type */
1649 if ((addr->b[5] & 0xc0) == 0xc0)
1655 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1656 bdaddr_t *bdaddr, u8 addr_type)
1658 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1661 return hci_find_irk_by_rpa(hdev, bdaddr);
1664 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1669 if (min > max || min < 6 || max > 3200)
1672 if (to_multiplier < 10 || to_multiplier > 3200)
1675 if (max >= to_multiplier * 8)
1678 max_latency = (to_multiplier * 4 / max) - 1;
1679 if (latency > 499 || latency > max_latency)
1685 int hci_register_cb(struct hci_cb *hcb);
1686 int hci_unregister_cb(struct hci_cb *hcb);
1688 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1689 const void *param, u32 timeout);
1690 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1691 const void *param, u8 event, u32 timeout);
1692 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
1695 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1697 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1698 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1700 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1702 struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1703 const void *param, u32 timeout);
1705 u32 hci_conn_get_phy(struct hci_conn *conn);
1707 /* ----- HCI Sockets ----- */
1708 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1709 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1710 int flag, struct sock *skip_sk);
1711 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1712 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1713 void *data, u16 data_len, ktime_t tstamp,
1714 int flag, struct sock *skip_sk);
1716 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1718 #define HCI_MGMT_VAR_LEN BIT(0)
1719 #define HCI_MGMT_NO_HDEV BIT(1)
1720 #define HCI_MGMT_UNTRUSTED BIT(2)
1721 #define HCI_MGMT_UNCONFIGURED BIT(3)
1722 #define HCI_MGMT_HDEV_OPTIONAL BIT(4)
1724 struct hci_mgmt_handler {
1725 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1728 unsigned long flags;
1731 struct hci_mgmt_chan {
1732 struct list_head list;
1733 unsigned short channel;
1734 size_t handler_count;
1735 const struct hci_mgmt_handler *handlers;
1736 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1739 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1740 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1742 /* Management interface */
1743 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1744 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1745 BIT(BDADDR_LE_RANDOM))
1746 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1747 BIT(BDADDR_LE_PUBLIC) | \
1748 BIT(BDADDR_LE_RANDOM))
1750 /* These LE scan and inquiry parameters were chosen according to LE General
1751 * Discovery Procedure specification.
1753 #define DISCOV_LE_SCAN_WIN 0x12
1754 #define DISCOV_LE_SCAN_INT 0x12
1755 #define DISCOV_LE_TIMEOUT 10240 /* msec */
1756 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1757 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1758 #define DISCOV_BREDR_INQUIRY_LEN 0x08
1759 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
1760 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */
1761 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */
1763 void mgmt_fill_version_info(void *ver);
1764 int mgmt_new_settings(struct hci_dev *hdev);
1765 void mgmt_index_added(struct hci_dev *hdev);
1766 void mgmt_index_removed(struct hci_dev *hdev);
1767 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1768 void mgmt_power_on(struct hci_dev *hdev, int err);
1769 void __mgmt_power_off(struct hci_dev *hdev);
1770 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1772 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1773 u8 *name, u8 name_len);
1774 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1775 u8 link_type, u8 addr_type, u8 reason,
1776 bool mgmt_connected);
1777 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1778 u8 link_type, u8 addr_type, u8 status);
1779 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1780 u8 addr_type, u8 status);
1781 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1782 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1784 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1786 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1787 u8 link_type, u8 addr_type, u32 value,
1789 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1790 u8 link_type, u8 addr_type, u8 status);
1791 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1792 u8 link_type, u8 addr_type, u8 status);
1793 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1794 u8 link_type, u8 addr_type);
1795 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1796 u8 link_type, u8 addr_type, u8 status);
1797 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1798 u8 link_type, u8 addr_type, u8 status);
1799 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1800 u8 link_type, u8 addr_type, u32 passkey,
1802 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1803 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1804 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1805 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1807 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1808 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
1809 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
1810 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1811 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1812 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1813 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1814 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1815 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1816 void mgmt_suspending(struct hci_dev *hdev, u8 state);
1817 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
1819 bool mgmt_powering_down(struct hci_dev *hdev);
1820 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1821 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1822 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1824 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1825 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1826 u16 max_interval, u16 latency, u16 timeout);
1827 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1828 bool mgmt_get_connectable(struct hci_dev *hdev);
1829 void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status);
1830 void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status);
1831 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
1832 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
1834 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
1836 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle);
1837 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
1838 int mgmt_add_adv_patterns_monitor_complete(struct hci_dev *hdev, u8 status);
1839 int mgmt_remove_adv_monitor_complete(struct hci_dev *hdev, u8 status);
1841 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1843 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1844 __u8 ltk[16], __u8 key_size);
1846 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1849 #define SCO_AIRMODE_MASK 0x0003
1850 #define SCO_AIRMODE_CVSD 0x0000
1851 #define SCO_AIRMODE_TRANSP 0x0003
1853 #endif /* __HCI_CORE_H */