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 <net/bluetooth/hci.h>
29 #include <net/bluetooth/hci_sock.h>
32 #define HCI_PRIO_MAX 7
34 /* HCI Core structures */
38 __u8 pscan_period_mode;
46 struct inquiry_entry {
47 struct list_head all; /* inq_cache.all */
48 struct list_head list; /* unknown or resolve */
56 struct inquiry_data data;
59 struct discovery_state {
68 struct list_head all; /* All devices found during inquiry */
69 struct list_head unknown; /* Name state not known */
70 struct list_head resolve; /* Name needs to be resolved */
72 bdaddr_t last_adv_addr;
73 u8 last_adv_addr_type;
76 u8 last_adv_data[HCI_MAX_AD_LENGTH];
78 bool report_invalid_rssi;
79 bool result_filtering;
83 unsigned long scan_start;
84 unsigned long scan_duration;
87 struct hci_conn_hash {
88 struct list_head list;
93 unsigned int le_num_slave;
97 struct list_head list;
103 struct list_head list;
117 struct list_head list;
130 struct list_head list;
139 struct list_head list;
143 u8 val[HCI_LINK_KEY_SIZE];
148 struct list_head list;
159 struct list_head list;
164 __u16 remaining_time;
167 __u8 adv_data[HCI_MAX_AD_LENGTH];
169 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
172 #define HCI_MAX_ADV_INSTANCES 5
173 #define HCI_DEFAULT_ADV_DURATION 2
175 #define HCI_MAX_SHORT_NAME_LENGTH 10
177 /* Min encryption key size to match with SMP */
178 #define HCI_MIN_ENC_KEY_SIZE 7
180 /* Default LE RPA expiry time, 15 minutes */
181 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
183 /* Default min/max age of connection information (1s/3s) */
184 #define DEFAULT_CONN_INFO_MIN_AGE 1000
185 #define DEFAULT_CONN_INFO_MAX_AGE 3000
192 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
195 #define HCI_MAX_PAGES 3
198 struct list_head list;
208 bdaddr_t public_addr;
209 bdaddr_t random_addr;
210 bdaddr_t static_addr;
212 __u8 dev_name[HCI_MAX_NAME_LENGTH];
213 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
214 __u8 eir[HCI_MAX_EIR_LENGTH];
219 __u8 features[HCI_MAX_PAGES][8];
221 __u8 le_white_list_size;
231 __u8 stored_max_keys;
232 __u8 stored_num_keys;
235 __u16 page_scan_interval;
236 __u16 page_scan_window;
238 __u8 le_adv_channel_map;
239 __u16 le_adv_min_interval;
240 __u16 le_adv_max_interval;
242 __u16 le_scan_interval;
243 __u16 le_scan_window;
244 __u16 le_conn_min_interval;
245 __u16 le_conn_max_interval;
246 __u16 le_conn_latency;
247 __u16 le_supv_timeout;
249 __u16 le_def_tx_time;
251 __u16 le_max_tx_time;
253 __u16 le_max_rx_time;
254 __u16 discov_interleaved_timeout;
255 __u16 conn_info_min_age;
256 __u16 conn_info_max_age;
272 __u16 sniff_min_interval;
273 __u16 sniff_max_interval;
278 __u32 amp_min_latency;
282 __u16 amp_assoc_size;
283 __u32 amp_max_flush_to;
284 __u32 amp_be_flush_to;
286 struct amp_assoc loc_assoc;
290 unsigned int auto_accept_delay;
292 unsigned long quirks;
295 unsigned int acl_cnt;
296 unsigned int sco_cnt;
299 unsigned int acl_mtu;
300 unsigned int sco_mtu;
302 unsigned int acl_pkts;
303 unsigned int sco_pkts;
304 unsigned int le_pkts;
311 unsigned long acl_last_tx;
312 unsigned long sco_last_tx;
313 unsigned long le_last_tx;
315 struct workqueue_struct *workqueue;
316 struct workqueue_struct *req_workqueue;
318 struct work_struct power_on;
319 struct delayed_work power_off;
320 struct work_struct error_reset;
322 __u16 discov_timeout;
323 struct delayed_work discov_off;
325 struct delayed_work service_cache;
327 struct delayed_work cmd_timer;
329 struct work_struct rx_work;
330 struct work_struct cmd_work;
331 struct work_struct tx_work;
333 struct sk_buff_head rx_q;
334 struct sk_buff_head raw_q;
335 struct sk_buff_head cmd_q;
337 struct sk_buff *sent_cmd;
339 struct mutex req_lock;
340 wait_queue_head_t req_wait_q;
343 struct sk_buff *req_skb;
346 void *smp_bredr_data;
348 struct discovery_state discovery;
349 struct hci_conn_hash conn_hash;
351 struct list_head mgmt_pending;
352 struct list_head blacklist;
353 struct list_head whitelist;
354 struct list_head uuids;
355 struct list_head link_keys;
356 struct list_head long_term_keys;
357 struct list_head identity_resolving_keys;
358 struct list_head remote_oob_data;
359 struct list_head le_white_list;
360 struct list_head le_conn_params;
361 struct list_head pend_le_conns;
362 struct list_head pend_le_reports;
364 struct hci_dev_stats stat;
368 struct dentry *debugfs;
372 struct rfkill *rfkill;
374 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
376 struct delayed_work le_scan_disable;
377 struct delayed_work le_scan_restart;
380 __u8 adv_data[HCI_MAX_AD_LENGTH];
382 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
383 __u8 scan_rsp_data_len;
385 struct list_head adv_instances;
386 unsigned int adv_instance_cnt;
387 __u8 cur_adv_instance;
388 __u16 adv_instance_timeout;
389 struct delayed_work adv_instance_expire;
393 struct delayed_work rpa_expired;
396 int (*open)(struct hci_dev *hdev);
397 int (*close)(struct hci_dev *hdev);
398 int (*flush)(struct hci_dev *hdev);
399 int (*setup)(struct hci_dev *hdev);
400 int (*shutdown)(struct hci_dev *hdev);
401 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
402 void (*notify)(struct hci_dev *hdev, unsigned int evt);
403 void (*hw_error)(struct hci_dev *hdev, u8 code);
404 int (*post_init)(struct hci_dev *hdev);
405 int (*set_diag)(struct hci_dev *hdev, bool enable);
406 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
409 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
412 struct list_head list;
432 __u8 features[HCI_MAX_PAGES][8];
438 __u8 pending_sec_level;
442 __u32 passkey_notify;
443 __u8 passkey_entered;
447 __u16 le_conn_min_interval;
448 __u16 le_conn_max_interval;
449 __u16 le_conn_interval;
450 __u16 le_conn_latency;
451 __u16 le_supv_timeout;
452 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
453 __u8 le_adv_data_len;
460 __u16 clock_accuracy;
462 unsigned long conn_info_timestamp;
470 struct sk_buff_head data_q;
471 struct list_head chan_list;
473 struct delayed_work disc_work;
474 struct delayed_work auto_accept_work;
475 struct delayed_work idle_work;
476 struct delayed_work le_conn_timeout;
477 struct work_struct le_scan_cleanup;
480 struct dentry *debugfs;
482 struct hci_dev *hdev;
485 struct amp_mgr *amp_mgr;
487 struct hci_conn *link;
489 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
490 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
491 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
495 struct list_head list;
497 struct hci_conn *conn;
498 struct sk_buff_head data_q;
504 struct hci_conn_params {
505 struct list_head list;
506 struct list_head action;
511 u16 conn_min_interval;
512 u16 conn_max_interval;
514 u16 supervision_timeout;
517 HCI_AUTO_CONN_DISABLED,
518 HCI_AUTO_CONN_REPORT,
519 HCI_AUTO_CONN_DIRECT,
520 HCI_AUTO_CONN_ALWAYS,
521 HCI_AUTO_CONN_LINK_LOSS,
522 HCI_AUTO_CONN_EXPLICIT,
525 struct hci_conn *conn;
526 bool explicit_connect;
529 extern struct list_head hci_dev_list;
530 extern struct list_head hci_cb_list;
531 extern rwlock_t hci_dev_list_lock;
532 extern struct mutex hci_cb_list_lock;
534 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
535 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
536 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
537 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
538 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
539 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
540 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
542 #define hci_dev_clear_volatile_flags(hdev) \
544 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
545 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
546 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
549 /* ----- HCI interface to upper protocols ----- */
550 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
551 int l2cap_disconn_ind(struct hci_conn *hcon);
552 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
554 #if IS_ENABLED(CONFIG_BT_BREDR)
555 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
556 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
558 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
564 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
569 /* ----- Inquiry cache ----- */
570 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
571 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
573 static inline void discovery_init(struct hci_dev *hdev)
575 hdev->discovery.state = DISCOVERY_STOPPED;
576 INIT_LIST_HEAD(&hdev->discovery.all);
577 INIT_LIST_HEAD(&hdev->discovery.unknown);
578 INIT_LIST_HEAD(&hdev->discovery.resolve);
579 hdev->discovery.report_invalid_rssi = true;
580 hdev->discovery.rssi = HCI_RSSI_INVALID;
583 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
585 hdev->discovery.result_filtering = false;
586 hdev->discovery.report_invalid_rssi = true;
587 hdev->discovery.rssi = HCI_RSSI_INVALID;
588 hdev->discovery.uuid_count = 0;
589 kfree(hdev->discovery.uuids);
590 hdev->discovery.uuids = NULL;
591 hdev->discovery.scan_start = 0;
592 hdev->discovery.scan_duration = 0;
595 bool hci_discovery_active(struct hci_dev *hdev);
597 void hci_discovery_set_state(struct hci_dev *hdev, int state);
599 static inline int inquiry_cache_empty(struct hci_dev *hdev)
601 return list_empty(&hdev->discovery.all);
604 static inline long inquiry_cache_age(struct hci_dev *hdev)
606 struct discovery_state *c = &hdev->discovery;
607 return jiffies - c->timestamp;
610 static inline long inquiry_entry_age(struct inquiry_entry *e)
612 return jiffies - e->timestamp;
615 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
617 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
619 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
622 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
623 struct inquiry_entry *ie);
624 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
626 void hci_inquiry_cache_flush(struct hci_dev *hdev);
628 /* ----- HCI Connections ----- */
631 HCI_CONN_REAUTH_PEND,
632 HCI_CONN_ENCRYPT_PEND,
633 HCI_CONN_RSWITCH_PEND,
634 HCI_CONN_MODE_CHANGE_PEND,
635 HCI_CONN_SCO_SETUP_PEND,
636 HCI_CONN_MGMT_CONNECTED,
637 HCI_CONN_SSP_ENABLED,
646 HCI_CONN_STK_ENCRYPT,
647 HCI_CONN_AUTH_INITIATOR,
649 HCI_CONN_PARAM_REMOVAL_PEND,
650 HCI_CONN_NEW_LINK_KEY,
654 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
656 struct hci_dev *hdev = conn->hdev;
657 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
658 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
661 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
663 struct hci_dev *hdev = conn->hdev;
664 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
665 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
668 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
670 struct hci_conn_hash *h = &hdev->conn_hash;
671 list_add_rcu(&c->list, &h->list);
681 if (c->role == HCI_ROLE_SLAVE)
691 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
693 struct hci_conn_hash *h = &hdev->conn_hash;
695 list_del_rcu(&c->list);
707 if (c->role == HCI_ROLE_SLAVE)
717 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
719 struct hci_conn_hash *h = &hdev->conn_hash;
735 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
737 struct hci_conn_hash *c = &hdev->conn_hash;
739 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
742 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
744 struct hci_conn_hash *h = &hdev->conn_hash;
746 __u8 type = INVALID_LINK;
750 list_for_each_entry_rcu(c, &h->list, list) {
751 if (c->handle == handle) {
762 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
765 struct hci_conn_hash *h = &hdev->conn_hash;
770 list_for_each_entry_rcu(c, &h->list, list) {
771 if (c->handle == handle) {
781 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
782 __u8 type, bdaddr_t *ba)
784 struct hci_conn_hash *h = &hdev->conn_hash;
789 list_for_each_entry_rcu(c, &h->list, list) {
790 if (c->type == type && !bacmp(&c->dst, ba)) {
801 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
805 struct hci_conn_hash *h = &hdev->conn_hash;
810 list_for_each_entry_rcu(c, &h->list, list) {
811 if (c->type != LE_LINK)
814 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
825 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
826 __u8 type, __u16 state)
828 struct hci_conn_hash *h = &hdev->conn_hash;
833 list_for_each_entry_rcu(c, &h->list, list) {
834 if (c->type == type && c->state == state) {
845 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
847 struct hci_conn_hash *h = &hdev->conn_hash;
852 list_for_each_entry_rcu(c, &h->list, list) {
853 if (c->type == LE_LINK && c->state == BT_CONNECT &&
854 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
865 int hci_disconnect(struct hci_conn *conn, __u8 reason);
866 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
867 void hci_sco_setup(struct hci_conn *conn, __u8 status);
869 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
871 int hci_conn_del(struct hci_conn *conn);
872 void hci_conn_hash_flush(struct hci_dev *hdev);
873 void hci_conn_check_pending(struct hci_dev *hdev);
875 struct hci_chan *hci_chan_create(struct hci_conn *conn);
876 void hci_chan_del(struct hci_chan *chan);
877 void hci_chan_list_flush(struct hci_conn *conn);
878 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
880 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
881 u8 dst_type, u8 sec_level,
882 u16 conn_timeout, u8 role);
883 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
884 u8 dst_type, u8 sec_level, u16 conn_timeout,
885 u8 role, bdaddr_t *direct_rpa);
886 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
887 u8 sec_level, u8 auth_type);
888 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
890 int hci_conn_check_link_mode(struct hci_conn *conn);
891 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
892 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
894 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
896 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
898 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
901 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
902 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
903 * working or anything else. They just guarantee that the object is available
904 * and can be dereferenced. So you can use its locks, local variables and any
905 * other constant data.
906 * Before accessing runtime data, you _must_ lock the object and then check that
907 * it is still running. As soon as you release the locks, the connection might
908 * get dropped, though.
910 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
911 * how long the underlying connection is held. So every channel that runs on the
912 * hci_conn object calls this to prevent the connection from disappearing. As
913 * long as you hold a device, you must also guarantee that you have a valid
914 * reference to the device via hci_conn_get() (or the initial reference from
916 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
917 * break because nobody cares for that. But this means, we cannot use
918 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
921 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
923 get_device(&conn->dev);
927 static inline void hci_conn_put(struct hci_conn *conn)
929 put_device(&conn->dev);
932 static inline void hci_conn_hold(struct hci_conn *conn)
934 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
936 atomic_inc(&conn->refcnt);
937 cancel_delayed_work(&conn->disc_work);
940 static inline void hci_conn_drop(struct hci_conn *conn)
942 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
944 if (atomic_dec_and_test(&conn->refcnt)) {
947 switch (conn->type) {
950 cancel_delayed_work(&conn->idle_work);
951 if (conn->state == BT_CONNECTED) {
952 timeo = conn->disc_timeout;
961 timeo = conn->disc_timeout;
969 cancel_delayed_work(&conn->disc_work);
970 queue_delayed_work(conn->hdev->workqueue,
971 &conn->disc_work, timeo);
975 /* ----- HCI Devices ----- */
976 static inline void hci_dev_put(struct hci_dev *d)
978 BT_DBG("%s orig refcnt %d", d->name,
979 atomic_read(&d->dev.kobj.kref.refcount));
984 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
986 BT_DBG("%s orig refcnt %d", d->name,
987 atomic_read(&d->dev.kobj.kref.refcount));
993 #define hci_dev_lock(d) mutex_lock(&d->lock)
994 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
996 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
997 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
999 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1001 return dev_get_drvdata(&hdev->dev);
1004 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1006 dev_set_drvdata(&hdev->dev, data);
1009 struct hci_dev *hci_dev_get(int index);
1010 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
1012 struct hci_dev *hci_alloc_dev(void);
1013 void hci_free_dev(struct hci_dev *hdev);
1014 int hci_register_dev(struct hci_dev *hdev);
1015 void hci_unregister_dev(struct hci_dev *hdev);
1016 void hci_cleanup_dev(struct hci_dev *hdev);
1017 int hci_suspend_dev(struct hci_dev *hdev);
1018 int hci_resume_dev(struct hci_dev *hdev);
1019 int hci_reset_dev(struct hci_dev *hdev);
1020 int hci_dev_open(__u16 dev);
1021 int hci_dev_close(__u16 dev);
1022 int hci_dev_do_close(struct hci_dev *hdev);
1023 int hci_dev_reset(__u16 dev);
1024 int hci_dev_reset_stat(__u16 dev);
1025 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1026 int hci_get_dev_list(void __user *arg);
1027 int hci_get_dev_info(void __user *arg);
1028 int hci_get_conn_list(void __user *arg);
1029 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1030 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1031 int hci_inquiry(void __user *arg);
1033 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1034 bdaddr_t *bdaddr, u8 type);
1035 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1036 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1037 void hci_bdaddr_list_clear(struct list_head *list);
1039 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1040 bdaddr_t *addr, u8 addr_type);
1041 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1042 bdaddr_t *addr, u8 addr_type);
1043 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1044 void hci_conn_params_clear_all(struct hci_dev *hdev);
1045 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1047 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1051 void hci_uuids_clear(struct hci_dev *hdev);
1053 void hci_link_keys_clear(struct hci_dev *hdev);
1054 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1055 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1056 bdaddr_t *bdaddr, u8 *val, u8 type,
1057 u8 pin_len, bool *persistent);
1058 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1059 u8 addr_type, u8 type, u8 authenticated,
1060 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1061 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1062 u8 addr_type, u8 role);
1063 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1064 void hci_smp_ltks_clear(struct hci_dev *hdev);
1065 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1067 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1068 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1070 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1071 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1072 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1073 void hci_smp_irks_clear(struct hci_dev *hdev);
1075 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1077 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1078 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1079 bdaddr_t *bdaddr, u8 bdaddr_type);
1080 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1081 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1082 u8 *hash256, u8 *rand256);
1083 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1086 void hci_adv_instances_clear(struct hci_dev *hdev);
1087 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1088 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1089 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1090 u16 adv_data_len, u8 *adv_data,
1091 u16 scan_rsp_len, u8 *scan_rsp_data,
1092 u16 timeout, u16 duration);
1093 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1095 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1097 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1098 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1100 void hci_init_sysfs(struct hci_dev *hdev);
1101 void hci_conn_init_sysfs(struct hci_conn *conn);
1102 void hci_conn_add_sysfs(struct hci_conn *conn);
1103 void hci_conn_del_sysfs(struct hci_conn *conn);
1105 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1107 /* ----- LMP capabilities ----- */
1108 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1109 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1110 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1111 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1112 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1113 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1114 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1115 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1116 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1117 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1118 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1119 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1120 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1121 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1122 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1123 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1124 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1125 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1126 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1128 /* ----- Extended LMP capabilities ----- */
1129 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1130 #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
1131 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1132 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1133 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1134 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1136 /* ----- Host capabilities ----- */
1137 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1138 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1139 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1140 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1142 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1143 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1144 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1145 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1147 /* ----- HCI protocols ----- */
1148 #define HCI_PROTO_DEFER 0x01
1150 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1151 __u8 type, __u8 *flags)
1155 return l2cap_connect_ind(hdev, bdaddr);
1159 return sco_connect_ind(hdev, bdaddr, flags);
1162 BT_ERR("unknown link type %d", type);
1167 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1169 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1170 return HCI_ERROR_REMOTE_USER_TERM;
1172 return l2cap_disconn_ind(conn);
1175 /* ----- HCI callbacks ----- */
1177 struct list_head list;
1181 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1182 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1183 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1185 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1186 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1189 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1193 mutex_lock(&hci_cb_list_lock);
1194 list_for_each_entry(cb, &hci_cb_list, list) {
1195 if (cb->connect_cfm)
1196 cb->connect_cfm(conn, status);
1198 mutex_unlock(&hci_cb_list_lock);
1200 if (conn->connect_cfm_cb)
1201 conn->connect_cfm_cb(conn, status);
1204 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1208 mutex_lock(&hci_cb_list_lock);
1209 list_for_each_entry(cb, &hci_cb_list, list) {
1210 if (cb->disconn_cfm)
1211 cb->disconn_cfm(conn, reason);
1213 mutex_unlock(&hci_cb_list_lock);
1215 if (conn->disconn_cfm_cb)
1216 conn->disconn_cfm_cb(conn, reason);
1219 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1224 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1227 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1229 mutex_lock(&hci_cb_list_lock);
1230 list_for_each_entry(cb, &hci_cb_list, list) {
1231 if (cb->security_cfm)
1232 cb->security_cfm(conn, status, encrypt);
1234 mutex_unlock(&hci_cb_list_lock);
1236 if (conn->security_cfm_cb)
1237 conn->security_cfm_cb(conn, status);
1240 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
1245 if (conn->state == BT_CONFIG) {
1247 conn->state = BT_CONNECTED;
1249 hci_connect_cfm(conn, status);
1250 hci_conn_drop(conn);
1254 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
1256 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
1262 if (conn->sec_level == BT_SECURITY_SDP)
1263 conn->sec_level = BT_SECURITY_LOW;
1265 if (conn->pending_sec_level > conn->sec_level)
1266 conn->sec_level = conn->pending_sec_level;
1269 mutex_lock(&hci_cb_list_lock);
1270 list_for_each_entry(cb, &hci_cb_list, list) {
1271 if (cb->security_cfm)
1272 cb->security_cfm(conn, status, encrypt);
1274 mutex_unlock(&hci_cb_list_lock);
1276 if (conn->security_cfm_cb)
1277 conn->security_cfm_cb(conn, status);
1280 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1284 mutex_lock(&hci_cb_list_lock);
1285 list_for_each_entry(cb, &hci_cb_list, list) {
1286 if (cb->key_change_cfm)
1287 cb->key_change_cfm(conn, status);
1289 mutex_unlock(&hci_cb_list_lock);
1292 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1297 mutex_lock(&hci_cb_list_lock);
1298 list_for_each_entry(cb, &hci_cb_list, list) {
1299 if (cb->role_switch_cfm)
1300 cb->role_switch_cfm(conn, status, role);
1302 mutex_unlock(&hci_cb_list_lock);
1305 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
1312 while (parsed < data_len - 1) {
1313 u8 field_len = data[0];
1318 parsed += field_len + 1;
1320 if (parsed > data_len)
1323 if (data[1] == type)
1326 data += field_len + 1;
1332 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1334 if (addr_type != ADDR_LE_DEV_RANDOM)
1337 if ((bdaddr->b[5] & 0xc0) == 0x40)
1343 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1345 if (addr_type == ADDR_LE_DEV_PUBLIC)
1348 /* Check for Random Static address type */
1349 if ((addr->b[5] & 0xc0) == 0xc0)
1355 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1356 bdaddr_t *bdaddr, u8 addr_type)
1358 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1361 return hci_find_irk_by_rpa(hdev, bdaddr);
1364 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1369 if (min > max || min < 6 || max > 3200)
1372 if (to_multiplier < 10 || to_multiplier > 3200)
1375 if (max >= to_multiplier * 8)
1378 max_latency = (to_multiplier * 4 / max) - 1;
1379 if (latency > 499 || latency > max_latency)
1385 int hci_register_cb(struct hci_cb *hcb);
1386 int hci_unregister_cb(struct hci_cb *hcb);
1388 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1389 const void *param, u32 timeout);
1390 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1391 const void *param, u8 event, u32 timeout);
1393 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1395 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1396 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1398 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1400 struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1401 const void *param, u32 timeout);
1403 /* ----- HCI Sockets ----- */
1404 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1405 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1406 int flag, struct sock *skip_sk);
1407 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1409 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1411 #define HCI_MGMT_VAR_LEN BIT(0)
1412 #define HCI_MGMT_NO_HDEV BIT(1)
1413 #define HCI_MGMT_UNTRUSTED BIT(2)
1414 #define HCI_MGMT_UNCONFIGURED BIT(3)
1416 struct hci_mgmt_handler {
1417 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1420 unsigned long flags;
1423 struct hci_mgmt_chan {
1424 struct list_head list;
1425 unsigned short channel;
1426 size_t handler_count;
1427 const struct hci_mgmt_handler *handlers;
1428 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1431 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1432 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1434 /* Management interface */
1435 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1436 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1437 BIT(BDADDR_LE_RANDOM))
1438 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1439 BIT(BDADDR_LE_PUBLIC) | \
1440 BIT(BDADDR_LE_RANDOM))
1442 /* These LE scan and inquiry parameters were chosen according to LE General
1443 * Discovery Procedure specification.
1445 #define DISCOV_LE_SCAN_WIN 0x12
1446 #define DISCOV_LE_SCAN_INT 0x12
1447 #define DISCOV_LE_TIMEOUT 10240 /* msec */
1448 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1449 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1450 #define DISCOV_BREDR_INQUIRY_LEN 0x08
1451 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
1453 int mgmt_new_settings(struct hci_dev *hdev);
1454 void mgmt_index_added(struct hci_dev *hdev);
1455 void mgmt_index_removed(struct hci_dev *hdev);
1456 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1457 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1458 int mgmt_update_adv_data(struct hci_dev *hdev);
1459 void mgmt_discoverable_timeout(struct hci_dev *hdev);
1460 void mgmt_adv_timeout_expired(struct hci_dev *hdev);
1461 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1463 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1464 u32 flags, u8 *name, u8 name_len);
1465 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1466 u8 link_type, u8 addr_type, u8 reason,
1467 bool mgmt_connected);
1468 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1469 u8 link_type, u8 addr_type, u8 status);
1470 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1471 u8 addr_type, u8 status);
1472 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1473 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1475 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1477 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1478 u8 link_type, u8 addr_type, u32 value,
1480 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1481 u8 link_type, u8 addr_type, u8 status);
1482 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1483 u8 link_type, u8 addr_type, u8 status);
1484 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1485 u8 link_type, u8 addr_type);
1486 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1487 u8 link_type, u8 addr_type, u8 status);
1488 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1489 u8 link_type, u8 addr_type, u8 status);
1490 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1491 u8 link_type, u8 addr_type, u32 passkey,
1493 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1494 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1495 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1496 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1498 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1499 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1500 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1501 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1502 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1503 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1504 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1505 bool mgmt_powering_down(struct hci_dev *hdev);
1506 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1507 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1508 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1510 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1511 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1512 u16 max_interval, u16 latency, u16 timeout);
1513 void mgmt_reenable_advertising(struct hci_dev *hdev);
1514 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1516 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1518 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1519 __u8 ltk[16], __u8 key_size);
1521 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1524 #define SCO_AIRMODE_MASK 0x0003
1525 #define SCO_AIRMODE_CVSD 0x0000
1526 #define SCO_AIRMODE_TRANSP 0x0003
1528 #endif /* __HCI_CORE_H */