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/leds.h>
29 #include <net/bluetooth/hci.h>
30 #include <net/bluetooth/hci_sock.h>
33 #define HCI_PRIO_MAX 7
35 /* HCI Core structures */
39 __u8 pscan_period_mode;
47 struct inquiry_entry {
48 struct list_head all; /* inq_cache.all */
49 struct list_head list; /* unknown or resolve */
57 struct inquiry_data data;
60 struct discovery_state {
69 struct list_head all; /* All devices found during inquiry */
70 struct list_head unknown; /* Name state not known */
71 struct list_head resolve; /* Name needs to be resolved */
73 bdaddr_t last_adv_addr;
74 u8 last_adv_addr_type;
77 u8 last_adv_data[HCI_MAX_AD_LENGTH];
79 bool report_invalid_rssi;
80 bool result_filtering;
85 unsigned long scan_start;
86 unsigned long scan_duration;
89 struct hci_conn_hash {
90 struct list_head list;
95 unsigned int le_num_slave;
99 struct list_head list;
105 struct list_head list;
119 struct list_head list;
132 struct list_head list;
141 struct list_head list;
145 u8 val[HCI_LINK_KEY_SIZE];
150 struct list_head list;
161 struct list_head list;
166 __u16 remaining_time;
169 __u8 adv_data[HCI_MAX_AD_LENGTH];
171 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
174 #define HCI_MAX_ADV_INSTANCES 5
175 #define HCI_DEFAULT_ADV_DURATION 2
177 #define HCI_MAX_SHORT_NAME_LENGTH 10
179 /* Default LE RPA expiry time, 15 minutes */
180 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
182 /* Default min/max age of connection information (1s/3s) */
183 #define DEFAULT_CONN_INFO_MIN_AGE 1000
184 #define DEFAULT_CONN_INFO_MAX_AGE 3000
191 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
194 #define HCI_MAX_PAGES 3
197 struct list_head list;
207 bdaddr_t public_addr;
208 bdaddr_t random_addr;
209 bdaddr_t static_addr;
211 __u8 dev_name[HCI_MAX_NAME_LENGTH];
212 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
213 __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 work_struct discov_update;
334 struct work_struct bg_scan_update;
335 struct work_struct scan_update;
336 struct work_struct connectable_update;
337 struct work_struct discoverable_update;
338 struct delayed_work le_scan_disable;
339 struct delayed_work le_scan_restart;
341 struct sk_buff_head rx_q;
342 struct sk_buff_head raw_q;
343 struct sk_buff_head cmd_q;
345 struct sk_buff *sent_cmd;
347 struct mutex req_lock;
348 wait_queue_head_t req_wait_q;
351 struct sk_buff *req_skb;
354 void *smp_bredr_data;
356 struct discovery_state discovery;
357 struct hci_conn_hash conn_hash;
359 struct list_head mgmt_pending;
360 struct list_head blacklist;
361 struct list_head whitelist;
362 struct list_head uuids;
363 struct list_head link_keys;
364 struct list_head long_term_keys;
365 struct list_head identity_resolving_keys;
366 struct list_head remote_oob_data;
367 struct list_head le_white_list;
368 struct list_head le_conn_params;
369 struct list_head pend_le_conns;
370 struct list_head pend_le_reports;
372 struct hci_dev_stats stat;
378 struct dentry *debugfs;
382 struct rfkill *rfkill;
384 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
387 __u8 adv_data[HCI_MAX_AD_LENGTH];
389 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
390 __u8 scan_rsp_data_len;
392 struct list_head adv_instances;
393 unsigned int adv_instance_cnt;
394 __u8 cur_adv_instance;
395 __u16 adv_instance_timeout;
396 struct delayed_work adv_instance_expire;
400 struct delayed_work rpa_expired;
403 #if IS_ENABLED(CONFIG_BT_LEDS)
404 struct led_trigger *power_led;
407 int (*open)(struct hci_dev *hdev);
408 int (*close)(struct hci_dev *hdev);
409 int (*flush)(struct hci_dev *hdev);
410 int (*setup)(struct hci_dev *hdev);
411 int (*shutdown)(struct hci_dev *hdev);
412 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
413 void (*notify)(struct hci_dev *hdev, unsigned int evt);
414 void (*hw_error)(struct hci_dev *hdev, u8 code);
415 int (*post_init)(struct hci_dev *hdev);
416 int (*set_diag)(struct hci_dev *hdev, bool enable);
417 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
420 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
423 struct list_head list;
443 __u8 features[HCI_MAX_PAGES][8];
449 __u8 pending_sec_level;
453 __u32 passkey_notify;
454 __u8 passkey_entered;
458 __u16 le_conn_min_interval;
459 __u16 le_conn_max_interval;
460 __u16 le_conn_interval;
461 __u16 le_conn_latency;
462 __u16 le_supv_timeout;
463 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
464 __u8 le_adv_data_len;
471 __u16 clock_accuracy;
473 unsigned long conn_info_timestamp;
481 struct sk_buff_head data_q;
482 struct list_head chan_list;
484 struct delayed_work disc_work;
485 struct delayed_work auto_accept_work;
486 struct delayed_work idle_work;
487 struct delayed_work le_conn_timeout;
488 struct work_struct le_scan_cleanup;
491 struct dentry *debugfs;
493 struct hci_dev *hdev;
496 struct amp_mgr *amp_mgr;
498 struct hci_conn *link;
500 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
501 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
502 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
506 struct list_head list;
508 struct hci_conn *conn;
509 struct sk_buff_head data_q;
514 struct hci_conn_params {
515 struct list_head list;
516 struct list_head action;
521 u16 conn_min_interval;
522 u16 conn_max_interval;
524 u16 supervision_timeout;
527 HCI_AUTO_CONN_DISABLED,
528 HCI_AUTO_CONN_REPORT,
529 HCI_AUTO_CONN_DIRECT,
530 HCI_AUTO_CONN_ALWAYS,
531 HCI_AUTO_CONN_LINK_LOSS,
532 HCI_AUTO_CONN_EXPLICIT,
535 struct hci_conn *conn;
536 bool explicit_connect;
539 extern struct list_head hci_dev_list;
540 extern struct list_head hci_cb_list;
541 extern rwlock_t hci_dev_list_lock;
542 extern struct mutex hci_cb_list_lock;
544 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
545 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
546 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
547 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
548 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
549 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
550 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
552 #define hci_dev_clear_volatile_flags(hdev) \
554 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
555 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
556 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
559 /* ----- HCI interface to upper protocols ----- */
560 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
561 int l2cap_disconn_ind(struct hci_conn *hcon);
562 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
564 #if IS_ENABLED(CONFIG_BT_BREDR)
565 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
566 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
568 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
574 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
579 /* ----- Inquiry cache ----- */
580 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
581 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
583 static inline void discovery_init(struct hci_dev *hdev)
585 hdev->discovery.state = DISCOVERY_STOPPED;
586 INIT_LIST_HEAD(&hdev->discovery.all);
587 INIT_LIST_HEAD(&hdev->discovery.unknown);
588 INIT_LIST_HEAD(&hdev->discovery.resolve);
589 hdev->discovery.report_invalid_rssi = true;
590 hdev->discovery.rssi = HCI_RSSI_INVALID;
593 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
595 hdev->discovery.result_filtering = false;
596 hdev->discovery.report_invalid_rssi = true;
597 hdev->discovery.rssi = HCI_RSSI_INVALID;
598 hdev->discovery.uuid_count = 0;
599 kfree(hdev->discovery.uuids);
600 hdev->discovery.uuids = NULL;
601 hdev->discovery.scan_start = 0;
602 hdev->discovery.scan_duration = 0;
605 bool hci_discovery_active(struct hci_dev *hdev);
607 void hci_discovery_set_state(struct hci_dev *hdev, int state);
609 static inline int inquiry_cache_empty(struct hci_dev *hdev)
611 return list_empty(&hdev->discovery.all);
614 static inline long inquiry_cache_age(struct hci_dev *hdev)
616 struct discovery_state *c = &hdev->discovery;
617 return jiffies - c->timestamp;
620 static inline long inquiry_entry_age(struct inquiry_entry *e)
622 return jiffies - e->timestamp;
625 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
627 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
629 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
632 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
633 struct inquiry_entry *ie);
634 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
636 void hci_inquiry_cache_flush(struct hci_dev *hdev);
638 /* ----- HCI Connections ----- */
641 HCI_CONN_REAUTH_PEND,
642 HCI_CONN_ENCRYPT_PEND,
643 HCI_CONN_RSWITCH_PEND,
644 HCI_CONN_MODE_CHANGE_PEND,
645 HCI_CONN_SCO_SETUP_PEND,
646 HCI_CONN_MGMT_CONNECTED,
647 HCI_CONN_SSP_ENABLED,
656 HCI_CONN_STK_ENCRYPT,
657 HCI_CONN_AUTH_INITIATOR,
659 HCI_CONN_PARAM_REMOVAL_PEND,
660 HCI_CONN_NEW_LINK_KEY,
662 HCI_CONN_AUTH_FAILURE,
665 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
667 struct hci_dev *hdev = conn->hdev;
668 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
669 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
672 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
674 struct hci_dev *hdev = conn->hdev;
675 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
676 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
679 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
681 struct hci_conn_hash *h = &hdev->conn_hash;
682 list_add_rcu(&c->list, &h->list);
692 if (c->role == HCI_ROLE_SLAVE)
702 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
704 struct hci_conn_hash *h = &hdev->conn_hash;
706 list_del_rcu(&c->list);
718 if (c->role == HCI_ROLE_SLAVE)
728 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
730 struct hci_conn_hash *h = &hdev->conn_hash;
746 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
748 struct hci_conn_hash *c = &hdev->conn_hash;
750 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
753 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
755 struct hci_conn_hash *h = &hdev->conn_hash;
757 __u8 type = INVALID_LINK;
761 list_for_each_entry_rcu(c, &h->list, list) {
762 if (c->handle == handle) {
773 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
776 struct hci_conn_hash *h = &hdev->conn_hash;
781 list_for_each_entry_rcu(c, &h->list, list) {
782 if (c->handle == handle) {
792 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
793 __u8 type, bdaddr_t *ba)
795 struct hci_conn_hash *h = &hdev->conn_hash;
800 list_for_each_entry_rcu(c, &h->list, list) {
801 if (c->type == type && !bacmp(&c->dst, ba)) {
812 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
816 struct hci_conn_hash *h = &hdev->conn_hash;
821 list_for_each_entry_rcu(c, &h->list, list) {
822 if (c->type != LE_LINK)
825 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
836 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
837 __u8 type, __u16 state)
839 struct hci_conn_hash *h = &hdev->conn_hash;
844 list_for_each_entry_rcu(c, &h->list, list) {
845 if (c->type == type && c->state == state) {
856 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
858 struct hci_conn_hash *h = &hdev->conn_hash;
863 list_for_each_entry_rcu(c, &h->list, list) {
864 if (c->type == LE_LINK && c->state == BT_CONNECT &&
865 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
876 int hci_disconnect(struct hci_conn *conn, __u8 reason);
877 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
878 void hci_sco_setup(struct hci_conn *conn, __u8 status);
880 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
882 int hci_conn_del(struct hci_conn *conn);
883 void hci_conn_hash_flush(struct hci_dev *hdev);
884 void hci_conn_check_pending(struct hci_dev *hdev);
886 struct hci_chan *hci_chan_create(struct hci_conn *conn);
887 void hci_chan_del(struct hci_chan *chan);
888 void hci_chan_list_flush(struct hci_conn *conn);
889 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
891 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
892 u8 dst_type, u8 sec_level,
894 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
895 u8 dst_type, u8 sec_level, u16 conn_timeout,
897 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
898 u8 sec_level, u8 auth_type);
899 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
901 int hci_conn_check_link_mode(struct hci_conn *conn);
902 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
903 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
905 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
907 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
909 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
912 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
913 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
914 * working or anything else. They just guarantee that the object is available
915 * and can be dereferenced. So you can use its locks, local variables and any
916 * other constant data.
917 * Before accessing runtime data, you _must_ lock the object and then check that
918 * it is still running. As soon as you release the locks, the connection might
919 * get dropped, though.
921 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
922 * how long the underlying connection is held. So every channel that runs on the
923 * hci_conn object calls this to prevent the connection from disappearing. As
924 * long as you hold a device, you must also guarantee that you have a valid
925 * reference to the device via hci_conn_get() (or the initial reference from
927 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
928 * break because nobody cares for that. But this means, we cannot use
929 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
932 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
934 get_device(&conn->dev);
938 static inline void hci_conn_put(struct hci_conn *conn)
940 put_device(&conn->dev);
943 static inline void hci_conn_hold(struct hci_conn *conn)
945 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
947 atomic_inc(&conn->refcnt);
948 cancel_delayed_work(&conn->disc_work);
951 static inline void hci_conn_drop(struct hci_conn *conn)
953 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
955 if (atomic_dec_and_test(&conn->refcnt)) {
958 switch (conn->type) {
961 cancel_delayed_work(&conn->idle_work);
962 if (conn->state == BT_CONNECTED) {
963 timeo = conn->disc_timeout;
972 timeo = conn->disc_timeout;
980 cancel_delayed_work(&conn->disc_work);
981 queue_delayed_work(conn->hdev->workqueue,
982 &conn->disc_work, timeo);
986 /* ----- HCI Devices ----- */
987 static inline void hci_dev_put(struct hci_dev *d)
989 BT_DBG("%s orig refcnt %d", d->name,
990 atomic_read(&d->dev.kobj.kref.refcount));
995 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
997 BT_DBG("%s orig refcnt %d", d->name,
998 atomic_read(&d->dev.kobj.kref.refcount));
1000 get_device(&d->dev);
1004 #define hci_dev_lock(d) mutex_lock(&d->lock)
1005 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
1007 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1008 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1010 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1012 return dev_get_drvdata(&hdev->dev);
1015 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1017 dev_set_drvdata(&hdev->dev, data);
1020 struct hci_dev *hci_dev_get(int index);
1021 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1023 struct hci_dev *hci_alloc_dev(void);
1024 void hci_free_dev(struct hci_dev *hdev);
1025 int hci_register_dev(struct hci_dev *hdev);
1026 void hci_unregister_dev(struct hci_dev *hdev);
1027 int hci_suspend_dev(struct hci_dev *hdev);
1028 int hci_resume_dev(struct hci_dev *hdev);
1029 int hci_reset_dev(struct hci_dev *hdev);
1030 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1031 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1032 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1033 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1034 int hci_dev_open(__u16 dev);
1035 int hci_dev_close(__u16 dev);
1036 int hci_dev_do_close(struct hci_dev *hdev);
1037 int hci_dev_reset(__u16 dev);
1038 int hci_dev_reset_stat(__u16 dev);
1039 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1040 int hci_get_dev_list(void __user *arg);
1041 int hci_get_dev_info(void __user *arg);
1042 int hci_get_conn_list(void __user *arg);
1043 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1044 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1045 int hci_inquiry(void __user *arg);
1047 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1048 bdaddr_t *bdaddr, u8 type);
1049 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1050 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1051 void hci_bdaddr_list_clear(struct list_head *list);
1053 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1054 bdaddr_t *addr, u8 addr_type);
1055 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1056 bdaddr_t *addr, u8 addr_type);
1057 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1058 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1060 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1064 void hci_uuids_clear(struct hci_dev *hdev);
1066 void hci_link_keys_clear(struct hci_dev *hdev);
1067 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1068 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1069 bdaddr_t *bdaddr, u8 *val, u8 type,
1070 u8 pin_len, bool *persistent);
1071 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1072 u8 addr_type, u8 type, u8 authenticated,
1073 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1074 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1075 u8 addr_type, u8 role);
1076 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1077 void hci_smp_ltks_clear(struct hci_dev *hdev);
1078 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1080 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1081 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1083 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1084 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1085 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1086 void hci_smp_irks_clear(struct hci_dev *hdev);
1088 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1090 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1091 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1092 bdaddr_t *bdaddr, u8 bdaddr_type);
1093 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1094 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1095 u8 *hash256, u8 *rand256);
1096 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1099 void hci_adv_instances_clear(struct hci_dev *hdev);
1100 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1101 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1102 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1103 u16 adv_data_len, u8 *adv_data,
1104 u16 scan_rsp_len, u8 *scan_rsp_data,
1105 u16 timeout, u16 duration);
1106 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1108 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1110 void hci_init_sysfs(struct hci_dev *hdev);
1111 void hci_conn_init_sysfs(struct hci_conn *conn);
1112 void hci_conn_add_sysfs(struct hci_conn *conn);
1113 void hci_conn_del_sysfs(struct hci_conn *conn);
1115 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1117 /* ----- LMP capabilities ----- */
1118 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1119 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1120 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1121 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1122 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1123 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1124 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1125 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1126 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1127 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1128 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1129 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1130 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1131 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1132 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1133 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1134 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1135 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1136 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1138 /* ----- Extended LMP capabilities ----- */
1139 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1140 #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
1141 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1142 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1143 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1144 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1146 /* ----- Host capabilities ----- */
1147 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1148 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1149 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1150 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1152 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1153 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1154 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1155 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1157 /* ----- HCI protocols ----- */
1158 #define HCI_PROTO_DEFER 0x01
1160 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1161 __u8 type, __u8 *flags)
1165 return l2cap_connect_ind(hdev, bdaddr);
1169 return sco_connect_ind(hdev, bdaddr, flags);
1172 BT_ERR("unknown link type %d", type);
1177 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1179 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1180 return HCI_ERROR_REMOTE_USER_TERM;
1182 return l2cap_disconn_ind(conn);
1185 /* ----- HCI callbacks ----- */
1187 struct list_head list;
1191 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1192 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1193 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1195 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1196 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1199 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1203 mutex_lock(&hci_cb_list_lock);
1204 list_for_each_entry(cb, &hci_cb_list, list) {
1205 if (cb->connect_cfm)
1206 cb->connect_cfm(conn, status);
1208 mutex_unlock(&hci_cb_list_lock);
1210 if (conn->connect_cfm_cb)
1211 conn->connect_cfm_cb(conn, status);
1214 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1218 mutex_lock(&hci_cb_list_lock);
1219 list_for_each_entry(cb, &hci_cb_list, list) {
1220 if (cb->disconn_cfm)
1221 cb->disconn_cfm(conn, reason);
1223 mutex_unlock(&hci_cb_list_lock);
1225 if (conn->disconn_cfm_cb)
1226 conn->disconn_cfm_cb(conn, reason);
1229 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1234 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1237 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1239 mutex_lock(&hci_cb_list_lock);
1240 list_for_each_entry(cb, &hci_cb_list, list) {
1241 if (cb->security_cfm)
1242 cb->security_cfm(conn, status, encrypt);
1244 mutex_unlock(&hci_cb_list_lock);
1246 if (conn->security_cfm_cb)
1247 conn->security_cfm_cb(conn, status);
1250 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1255 if (conn->sec_level == BT_SECURITY_SDP)
1256 conn->sec_level = BT_SECURITY_LOW;
1258 if (conn->pending_sec_level > conn->sec_level)
1259 conn->sec_level = conn->pending_sec_level;
1261 mutex_lock(&hci_cb_list_lock);
1262 list_for_each_entry(cb, &hci_cb_list, list) {
1263 if (cb->security_cfm)
1264 cb->security_cfm(conn, status, encrypt);
1266 mutex_unlock(&hci_cb_list_lock);
1268 if (conn->security_cfm_cb)
1269 conn->security_cfm_cb(conn, status);
1272 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1276 mutex_lock(&hci_cb_list_lock);
1277 list_for_each_entry(cb, &hci_cb_list, list) {
1278 if (cb->key_change_cfm)
1279 cb->key_change_cfm(conn, status);
1281 mutex_unlock(&hci_cb_list_lock);
1284 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1289 mutex_lock(&hci_cb_list_lock);
1290 list_for_each_entry(cb, &hci_cb_list, list) {
1291 if (cb->role_switch_cfm)
1292 cb->role_switch_cfm(conn, status, role);
1294 mutex_unlock(&hci_cb_list_lock);
1297 static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
1305 while (parsed < eir_len - 1) {
1306 u8 field_len = eir[0];
1311 parsed += field_len + 1;
1313 if (parsed > eir_len)
1316 if (eir[1] != type) {
1317 eir += field_len + 1;
1321 /* Zero length data */
1326 *data_len = field_len - 1;
1334 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1336 if (addr_type != ADDR_LE_DEV_RANDOM)
1339 if ((bdaddr->b[5] & 0xc0) == 0x40)
1345 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1347 if (addr_type == ADDR_LE_DEV_PUBLIC)
1350 /* Check for Random Static address type */
1351 if ((addr->b[5] & 0xc0) == 0xc0)
1357 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1358 bdaddr_t *bdaddr, u8 addr_type)
1360 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1363 return hci_find_irk_by_rpa(hdev, bdaddr);
1366 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1371 if (min > max || min < 6 || max > 3200)
1374 if (to_multiplier < 10 || to_multiplier > 3200)
1377 if (max >= to_multiplier * 8)
1380 max_latency = (to_multiplier * 4 / max) - 1;
1381 if (latency > 499 || latency > max_latency)
1387 int hci_register_cb(struct hci_cb *hcb);
1388 int hci_unregister_cb(struct hci_cb *hcb);
1390 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1391 const void *param, u32 timeout);
1392 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1393 const void *param, u8 event, u32 timeout);
1395 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1397 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1398 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1400 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1402 struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1403 const void *param, u32 timeout);
1405 /* ----- HCI Sockets ----- */
1406 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1407 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1408 int flag, struct sock *skip_sk);
1409 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1410 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1411 void *data, u16 data_len, ktime_t tstamp,
1412 int flag, struct sock *skip_sk);
1414 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1416 #define HCI_MGMT_VAR_LEN BIT(0)
1417 #define HCI_MGMT_NO_HDEV BIT(1)
1418 #define HCI_MGMT_UNTRUSTED BIT(2)
1419 #define HCI_MGMT_UNCONFIGURED BIT(3)
1421 struct hci_mgmt_handler {
1422 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1425 unsigned long flags;
1428 struct hci_mgmt_chan {
1429 struct list_head list;
1430 unsigned short channel;
1431 size_t handler_count;
1432 const struct hci_mgmt_handler *handlers;
1433 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1436 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1437 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1439 /* Management interface */
1440 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1441 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1442 BIT(BDADDR_LE_RANDOM))
1443 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1444 BIT(BDADDR_LE_PUBLIC) | \
1445 BIT(BDADDR_LE_RANDOM))
1447 /* These LE scan and inquiry parameters were chosen according to LE General
1448 * Discovery Procedure specification.
1450 #define DISCOV_LE_SCAN_WIN 0x12
1451 #define DISCOV_LE_SCAN_INT 0x12
1452 #define DISCOV_LE_TIMEOUT 10240 /* msec */
1453 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1454 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1455 #define DISCOV_BREDR_INQUIRY_LEN 0x08
1456 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
1458 void mgmt_fill_version_info(void *ver);
1459 int mgmt_new_settings(struct hci_dev *hdev);
1460 void mgmt_index_added(struct hci_dev *hdev);
1461 void mgmt_index_removed(struct hci_dev *hdev);
1462 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1463 void mgmt_power_on(struct hci_dev *hdev, int err);
1464 void __mgmt_power_off(struct hci_dev *hdev);
1465 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1467 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1468 u32 flags, u8 *name, u8 name_len);
1469 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1470 u8 link_type, u8 addr_type, u8 reason,
1471 bool mgmt_connected);
1472 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1473 u8 link_type, u8 addr_type, u8 status);
1474 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1475 u8 addr_type, u8 status);
1476 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1477 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1479 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1481 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1482 u8 link_type, u8 addr_type, u32 value,
1484 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1485 u8 link_type, u8 addr_type, u8 status);
1486 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1487 u8 link_type, u8 addr_type, u8 status);
1488 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1489 u8 link_type, u8 addr_type);
1490 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1491 u8 link_type, u8 addr_type, u8 status);
1492 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1493 u8 link_type, u8 addr_type, u8 status);
1494 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1495 u8 link_type, u8 addr_type, u32 passkey,
1497 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1498 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1499 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1500 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1502 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1503 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
1504 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
1505 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1506 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1507 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1508 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1509 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1510 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1511 bool mgmt_powering_down(struct hci_dev *hdev);
1512 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1513 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1514 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1516 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1517 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1518 u16 max_interval, u16 latency, u16 timeout);
1519 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1520 bool mgmt_get_connectable(struct hci_dev *hdev);
1521 void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status);
1522 void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status);
1523 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
1524 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
1526 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
1529 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1531 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1532 __u8 ltk[16], __u8 key_size);
1534 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1537 #define SCO_AIRMODE_MASK 0x0003
1538 #define SCO_AIRMODE_CVSD 0x0000
1539 #define SCO_AIRMODE_TRANSP 0x0003
1541 #endif /* __HCI_CORE_H */