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 /* Default LE RPA expiry time, 15 minutes */
178 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
180 /* Default min/max age of connection information (1s/3s) */
181 #define DEFAULT_CONN_INFO_MIN_AGE 1000
182 #define DEFAULT_CONN_INFO_MAX_AGE 3000
189 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
192 #define HCI_MAX_PAGES 3
195 struct list_head list;
205 bdaddr_t public_addr;
206 bdaddr_t random_addr;
207 bdaddr_t static_addr;
209 __u8 dev_name[HCI_MAX_NAME_LENGTH];
210 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
211 __u8 eir[HCI_MAX_EIR_LENGTH];
216 __u8 features[HCI_MAX_PAGES][8];
218 __u8 le_white_list_size;
228 __u8 stored_max_keys;
229 __u8 stored_num_keys;
232 __u16 page_scan_interval;
233 __u16 page_scan_window;
235 __u8 le_adv_channel_map;
236 __u16 le_adv_min_interval;
237 __u16 le_adv_max_interval;
239 __u16 le_scan_interval;
240 __u16 le_scan_window;
241 __u16 le_conn_min_interval;
242 __u16 le_conn_max_interval;
243 __u16 le_conn_latency;
244 __u16 le_supv_timeout;
246 __u16 le_def_tx_time;
248 __u16 le_max_tx_time;
250 __u16 le_max_rx_time;
251 __u16 discov_interleaved_timeout;
252 __u16 conn_info_min_age;
253 __u16 conn_info_max_age;
269 __u16 sniff_min_interval;
270 __u16 sniff_max_interval;
275 __u32 amp_min_latency;
279 __u16 amp_assoc_size;
280 __u32 amp_max_flush_to;
281 __u32 amp_be_flush_to;
283 struct amp_assoc loc_assoc;
287 unsigned int auto_accept_delay;
289 unsigned long quirks;
292 unsigned int acl_cnt;
293 unsigned int sco_cnt;
296 unsigned int acl_mtu;
297 unsigned int sco_mtu;
299 unsigned int acl_pkts;
300 unsigned int sco_pkts;
301 unsigned int le_pkts;
308 unsigned long acl_last_tx;
309 unsigned long sco_last_tx;
310 unsigned long le_last_tx;
312 struct workqueue_struct *workqueue;
313 struct workqueue_struct *req_workqueue;
315 struct work_struct power_on;
316 struct delayed_work power_off;
317 struct work_struct error_reset;
319 __u16 discov_timeout;
320 struct delayed_work discov_off;
322 struct delayed_work service_cache;
324 struct delayed_work cmd_timer;
326 struct work_struct rx_work;
327 struct work_struct cmd_work;
328 struct work_struct tx_work;
330 struct sk_buff_head rx_q;
331 struct sk_buff_head raw_q;
332 struct sk_buff_head cmd_q;
334 struct sk_buff *sent_cmd;
336 struct mutex req_lock;
337 wait_queue_head_t req_wait_q;
340 struct sk_buff *req_skb;
343 void *smp_bredr_data;
345 struct discovery_state discovery;
346 struct hci_conn_hash conn_hash;
348 struct list_head mgmt_pending;
349 struct list_head blacklist;
350 struct list_head whitelist;
351 struct list_head uuids;
352 struct list_head link_keys;
353 struct list_head long_term_keys;
354 struct list_head identity_resolving_keys;
355 struct list_head remote_oob_data;
356 struct list_head le_white_list;
357 struct list_head le_conn_params;
358 struct list_head pend_le_conns;
359 struct list_head pend_le_reports;
361 struct hci_dev_stats stat;
365 struct dentry *debugfs;
369 struct rfkill *rfkill;
371 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
373 struct delayed_work le_scan_disable;
374 struct delayed_work le_scan_restart;
377 __u8 adv_data[HCI_MAX_AD_LENGTH];
379 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
380 __u8 scan_rsp_data_len;
382 struct list_head adv_instances;
383 unsigned int adv_instance_cnt;
384 __u8 cur_adv_instance;
385 __u16 adv_instance_timeout;
386 struct delayed_work adv_instance_expire;
390 struct delayed_work rpa_expired;
393 int (*open)(struct hci_dev *hdev);
394 int (*close)(struct hci_dev *hdev);
395 int (*flush)(struct hci_dev *hdev);
396 int (*setup)(struct hci_dev *hdev);
397 int (*shutdown)(struct hci_dev *hdev);
398 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
399 void (*notify)(struct hci_dev *hdev, unsigned int evt);
400 void (*hw_error)(struct hci_dev *hdev, u8 code);
401 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
404 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
407 struct list_head list;
427 __u8 features[HCI_MAX_PAGES][8];
433 __u8 pending_sec_level;
437 __u32 passkey_notify;
438 __u8 passkey_entered;
442 __u16 le_conn_min_interval;
443 __u16 le_conn_max_interval;
444 __u16 le_conn_interval;
445 __u16 le_conn_latency;
446 __u16 le_supv_timeout;
447 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
448 __u8 le_adv_data_len;
455 __u16 clock_accuracy;
457 unsigned long conn_info_timestamp;
465 struct sk_buff_head data_q;
466 struct list_head chan_list;
468 struct delayed_work disc_work;
469 struct delayed_work auto_accept_work;
470 struct delayed_work idle_work;
471 struct delayed_work le_conn_timeout;
474 struct dentry *debugfs;
476 struct hci_dev *hdev;
479 struct amp_mgr *amp_mgr;
481 struct hci_conn *link;
483 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
484 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
485 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
489 struct list_head list;
491 struct hci_conn *conn;
492 struct sk_buff_head data_q;
497 struct hci_conn_params {
498 struct list_head list;
499 struct list_head action;
504 u16 conn_min_interval;
505 u16 conn_max_interval;
507 u16 supervision_timeout;
510 HCI_AUTO_CONN_DISABLED,
511 HCI_AUTO_CONN_REPORT,
512 HCI_AUTO_CONN_DIRECT,
513 HCI_AUTO_CONN_ALWAYS,
514 HCI_AUTO_CONN_LINK_LOSS,
515 HCI_AUTO_CONN_EXPLICIT,
518 struct hci_conn *conn;
519 bool explicit_connect;
522 extern struct list_head hci_dev_list;
523 extern struct list_head hci_cb_list;
524 extern rwlock_t hci_dev_list_lock;
525 extern struct mutex hci_cb_list_lock;
527 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
528 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
529 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
530 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
531 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
532 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
533 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
535 #define hci_dev_clear_volatile_flags(hdev) \
537 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
538 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
539 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
542 /* ----- HCI interface to upper protocols ----- */
543 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
544 int l2cap_disconn_ind(struct hci_conn *hcon);
545 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
547 #if IS_ENABLED(CONFIG_BT_BREDR)
548 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
549 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
551 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
557 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
562 /* ----- Inquiry cache ----- */
563 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
564 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
566 static inline void discovery_init(struct hci_dev *hdev)
568 hdev->discovery.state = DISCOVERY_STOPPED;
569 INIT_LIST_HEAD(&hdev->discovery.all);
570 INIT_LIST_HEAD(&hdev->discovery.unknown);
571 INIT_LIST_HEAD(&hdev->discovery.resolve);
572 hdev->discovery.report_invalid_rssi = true;
573 hdev->discovery.rssi = HCI_RSSI_INVALID;
576 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
578 hdev->discovery.result_filtering = false;
579 hdev->discovery.report_invalid_rssi = true;
580 hdev->discovery.rssi = HCI_RSSI_INVALID;
581 hdev->discovery.uuid_count = 0;
582 kfree(hdev->discovery.uuids);
583 hdev->discovery.uuids = NULL;
584 hdev->discovery.scan_start = 0;
585 hdev->discovery.scan_duration = 0;
588 bool hci_discovery_active(struct hci_dev *hdev);
590 void hci_discovery_set_state(struct hci_dev *hdev, int state);
592 static inline int inquiry_cache_empty(struct hci_dev *hdev)
594 return list_empty(&hdev->discovery.all);
597 static inline long inquiry_cache_age(struct hci_dev *hdev)
599 struct discovery_state *c = &hdev->discovery;
600 return jiffies - c->timestamp;
603 static inline long inquiry_entry_age(struct inquiry_entry *e)
605 return jiffies - e->timestamp;
608 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
610 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
612 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
615 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
616 struct inquiry_entry *ie);
617 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
619 void hci_inquiry_cache_flush(struct hci_dev *hdev);
621 /* ----- HCI Connections ----- */
624 HCI_CONN_REAUTH_PEND,
625 HCI_CONN_ENCRYPT_PEND,
626 HCI_CONN_RSWITCH_PEND,
627 HCI_CONN_MODE_CHANGE_PEND,
628 HCI_CONN_SCO_SETUP_PEND,
629 HCI_CONN_MGMT_CONNECTED,
630 HCI_CONN_SSP_ENABLED,
639 HCI_CONN_STK_ENCRYPT,
640 HCI_CONN_AUTH_INITIATOR,
642 HCI_CONN_PARAM_REMOVAL_PEND,
643 HCI_CONN_NEW_LINK_KEY,
647 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
649 struct hci_dev *hdev = conn->hdev;
650 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
651 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
654 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
656 struct hci_dev *hdev = conn->hdev;
657 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
658 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
661 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
663 struct hci_conn_hash *h = &hdev->conn_hash;
664 list_add_rcu(&c->list, &h->list);
674 if (c->role == HCI_ROLE_SLAVE)
684 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
686 struct hci_conn_hash *h = &hdev->conn_hash;
688 list_del_rcu(&c->list);
700 if (c->role == HCI_ROLE_SLAVE)
710 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
712 struct hci_conn_hash *h = &hdev->conn_hash;
728 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
730 struct hci_conn_hash *c = &hdev->conn_hash;
732 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
735 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
737 struct hci_conn_hash *h = &hdev->conn_hash;
739 __u8 type = INVALID_LINK;
743 list_for_each_entry_rcu(c, &h->list, list) {
744 if (c->handle == handle) {
755 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
758 struct hci_conn_hash *h = &hdev->conn_hash;
763 list_for_each_entry_rcu(c, &h->list, list) {
764 if (c->handle == handle) {
774 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
775 __u8 type, bdaddr_t *ba)
777 struct hci_conn_hash *h = &hdev->conn_hash;
782 list_for_each_entry_rcu(c, &h->list, list) {
783 if (c->type == type && !bacmp(&c->dst, ba)) {
794 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
795 __u8 type, __u16 state)
797 struct hci_conn_hash *h = &hdev->conn_hash;
802 list_for_each_entry_rcu(c, &h->list, list) {
803 if (c->type == type && c->state == state) {
814 static inline struct hci_conn *hci_lookup_le_connect(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 && c->state == BT_CONNECT &&
823 !test_bit(HCI_CONN_SCANNING, &c->flags)) {
834 int hci_disconnect(struct hci_conn *conn, __u8 reason);
835 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
836 void hci_sco_setup(struct hci_conn *conn, __u8 status);
838 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
840 int hci_conn_del(struct hci_conn *conn);
841 void hci_conn_hash_flush(struct hci_dev *hdev);
842 void hci_conn_check_pending(struct hci_dev *hdev);
844 struct hci_chan *hci_chan_create(struct hci_conn *conn);
845 void hci_chan_del(struct hci_chan *chan);
846 void hci_chan_list_flush(struct hci_conn *conn);
847 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
849 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
850 u8 dst_type, u8 sec_level,
851 u16 conn_timeout, u8 role);
852 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
853 u8 dst_type, u8 sec_level, u16 conn_timeout,
855 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
856 u8 sec_level, u8 auth_type);
857 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
859 int hci_conn_check_link_mode(struct hci_conn *conn);
860 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
861 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
863 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
865 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
867 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
870 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
871 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
872 * working or anything else. They just guarantee that the object is available
873 * and can be dereferenced. So you can use its locks, local variables and any
874 * other constant data.
875 * Before accessing runtime data, you _must_ lock the object and then check that
876 * it is still running. As soon as you release the locks, the connection might
877 * get dropped, though.
879 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
880 * how long the underlying connection is held. So every channel that runs on the
881 * hci_conn object calls this to prevent the connection from disappearing. As
882 * long as you hold a device, you must also guarantee that you have a valid
883 * reference to the device via hci_conn_get() (or the initial reference from
885 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
886 * break because nobody cares for that. But this means, we cannot use
887 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
890 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
892 get_device(&conn->dev);
896 static inline void hci_conn_put(struct hci_conn *conn)
898 put_device(&conn->dev);
901 static inline void hci_conn_hold(struct hci_conn *conn)
903 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
905 atomic_inc(&conn->refcnt);
906 cancel_delayed_work(&conn->disc_work);
909 static inline void hci_conn_drop(struct hci_conn *conn)
911 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
913 if (atomic_dec_and_test(&conn->refcnt)) {
916 switch (conn->type) {
919 cancel_delayed_work(&conn->idle_work);
920 if (conn->state == BT_CONNECTED) {
921 timeo = conn->disc_timeout;
930 timeo = conn->disc_timeout;
938 cancel_delayed_work(&conn->disc_work);
939 queue_delayed_work(conn->hdev->workqueue,
940 &conn->disc_work, timeo);
944 /* ----- HCI Devices ----- */
945 static inline void hci_dev_put(struct hci_dev *d)
947 BT_DBG("%s orig refcnt %d", d->name,
948 atomic_read(&d->dev.kobj.kref.refcount));
953 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
955 BT_DBG("%s orig refcnt %d", d->name,
956 atomic_read(&d->dev.kobj.kref.refcount));
962 #define hci_dev_lock(d) mutex_lock(&d->lock)
963 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
965 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
966 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
968 static inline void *hci_get_drvdata(struct hci_dev *hdev)
970 return dev_get_drvdata(&hdev->dev);
973 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
975 dev_set_drvdata(&hdev->dev, data);
978 struct hci_dev *hci_dev_get(int index);
979 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
981 struct hci_dev *hci_alloc_dev(void);
982 void hci_free_dev(struct hci_dev *hdev);
983 int hci_register_dev(struct hci_dev *hdev);
984 void hci_unregister_dev(struct hci_dev *hdev);
985 int hci_suspend_dev(struct hci_dev *hdev);
986 int hci_resume_dev(struct hci_dev *hdev);
987 int hci_reset_dev(struct hci_dev *hdev);
988 int hci_dev_open(__u16 dev);
989 int hci_dev_close(__u16 dev);
990 int hci_dev_reset(__u16 dev);
991 int hci_dev_reset_stat(__u16 dev);
992 int hci_dev_cmd(unsigned int cmd, void __user *arg);
993 int hci_get_dev_list(void __user *arg);
994 int hci_get_dev_info(void __user *arg);
995 int hci_get_conn_list(void __user *arg);
996 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
997 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
998 int hci_inquiry(void __user *arg);
1000 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1001 bdaddr_t *bdaddr, u8 type);
1002 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1003 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1004 void hci_bdaddr_list_clear(struct list_head *list);
1006 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1007 bdaddr_t *addr, u8 addr_type);
1008 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1009 bdaddr_t *addr, u8 addr_type);
1010 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1011 void hci_conn_params_clear_all(struct hci_dev *hdev);
1012 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1014 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1017 struct hci_conn_params *hci_explicit_connect_lookup(struct hci_dev *hdev,
1021 void hci_uuids_clear(struct hci_dev *hdev);
1023 void hci_link_keys_clear(struct hci_dev *hdev);
1024 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1025 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1026 bdaddr_t *bdaddr, u8 *val, u8 type,
1027 u8 pin_len, bool *persistent);
1028 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1029 u8 addr_type, u8 type, u8 authenticated,
1030 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1031 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1032 u8 addr_type, u8 role);
1033 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1034 void hci_smp_ltks_clear(struct hci_dev *hdev);
1035 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1037 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1038 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1040 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1041 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1042 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1043 void hci_smp_irks_clear(struct hci_dev *hdev);
1045 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1047 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1048 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1049 bdaddr_t *bdaddr, u8 bdaddr_type);
1050 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1051 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1052 u8 *hash256, u8 *rand256);
1053 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1056 void hci_adv_instances_clear(struct hci_dev *hdev);
1057 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1058 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1059 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1060 u16 adv_data_len, u8 *adv_data,
1061 u16 scan_rsp_len, u8 *scan_rsp_data,
1062 u16 timeout, u16 duration);
1063 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1065 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1067 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1069 void hci_init_sysfs(struct hci_dev *hdev);
1070 void hci_conn_init_sysfs(struct hci_conn *conn);
1071 void hci_conn_add_sysfs(struct hci_conn *conn);
1072 void hci_conn_del_sysfs(struct hci_conn *conn);
1074 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1076 /* ----- LMP capabilities ----- */
1077 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1078 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1079 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1080 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1081 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1082 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1083 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1084 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1085 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1086 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1087 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1088 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1089 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1090 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1091 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1092 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1093 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1094 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1095 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1097 /* ----- Extended LMP capabilities ----- */
1098 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1099 #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
1100 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1101 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1102 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1103 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1105 /* ----- Host capabilities ----- */
1106 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1107 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1108 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1109 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1111 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1112 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1113 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1114 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1116 /* ----- HCI protocols ----- */
1117 #define HCI_PROTO_DEFER 0x01
1119 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1120 __u8 type, __u8 *flags)
1124 return l2cap_connect_ind(hdev, bdaddr);
1128 return sco_connect_ind(hdev, bdaddr, flags);
1131 BT_ERR("unknown link type %d", type);
1136 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1138 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1139 return HCI_ERROR_REMOTE_USER_TERM;
1141 return l2cap_disconn_ind(conn);
1144 /* ----- HCI callbacks ----- */
1146 struct list_head list;
1150 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1151 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1152 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1154 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1155 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1158 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1162 mutex_lock(&hci_cb_list_lock);
1163 list_for_each_entry(cb, &hci_cb_list, list) {
1164 if (cb->connect_cfm)
1165 cb->connect_cfm(conn, status);
1167 mutex_unlock(&hci_cb_list_lock);
1169 if (conn->connect_cfm_cb)
1170 conn->connect_cfm_cb(conn, status);
1173 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1177 mutex_lock(&hci_cb_list_lock);
1178 list_for_each_entry(cb, &hci_cb_list, list) {
1179 if (cb->disconn_cfm)
1180 cb->disconn_cfm(conn, reason);
1182 mutex_unlock(&hci_cb_list_lock);
1184 if (conn->disconn_cfm_cb)
1185 conn->disconn_cfm_cb(conn, reason);
1188 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1193 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1196 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1198 mutex_lock(&hci_cb_list_lock);
1199 list_for_each_entry(cb, &hci_cb_list, list) {
1200 if (cb->security_cfm)
1201 cb->security_cfm(conn, status, encrypt);
1203 mutex_unlock(&hci_cb_list_lock);
1205 if (conn->security_cfm_cb)
1206 conn->security_cfm_cb(conn, status);
1209 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1214 if (conn->sec_level == BT_SECURITY_SDP)
1215 conn->sec_level = BT_SECURITY_LOW;
1217 if (conn->pending_sec_level > conn->sec_level)
1218 conn->sec_level = conn->pending_sec_level;
1220 mutex_lock(&hci_cb_list_lock);
1221 list_for_each_entry(cb, &hci_cb_list, list) {
1222 if (cb->security_cfm)
1223 cb->security_cfm(conn, status, encrypt);
1225 mutex_unlock(&hci_cb_list_lock);
1227 if (conn->security_cfm_cb)
1228 conn->security_cfm_cb(conn, status);
1231 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1235 mutex_lock(&hci_cb_list_lock);
1236 list_for_each_entry(cb, &hci_cb_list, list) {
1237 if (cb->key_change_cfm)
1238 cb->key_change_cfm(conn, status);
1240 mutex_unlock(&hci_cb_list_lock);
1243 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1248 mutex_lock(&hci_cb_list_lock);
1249 list_for_each_entry(cb, &hci_cb_list, list) {
1250 if (cb->role_switch_cfm)
1251 cb->role_switch_cfm(conn, status, role);
1253 mutex_unlock(&hci_cb_list_lock);
1256 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
1263 while (parsed < data_len - 1) {
1264 u8 field_len = data[0];
1269 parsed += field_len + 1;
1271 if (parsed > data_len)
1274 if (data[1] == type)
1277 data += field_len + 1;
1283 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1285 if (addr_type != ADDR_LE_DEV_RANDOM)
1288 if ((bdaddr->b[5] & 0xc0) == 0x40)
1294 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1296 if (addr_type == ADDR_LE_DEV_PUBLIC)
1299 /* Check for Random Static address type */
1300 if ((addr->b[5] & 0xc0) == 0xc0)
1306 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1307 bdaddr_t *bdaddr, u8 addr_type)
1309 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1312 return hci_find_irk_by_rpa(hdev, bdaddr);
1315 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1320 if (min > max || min < 6 || max > 3200)
1323 if (to_multiplier < 10 || to_multiplier > 3200)
1326 if (max >= to_multiplier * 8)
1329 max_latency = (to_multiplier * 4 / max) - 1;
1330 if (latency > 499 || latency > max_latency)
1336 int hci_register_cb(struct hci_cb *hcb);
1337 int hci_unregister_cb(struct hci_cb *hcb);
1339 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1340 const void *param, u32 timeout);
1341 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1342 const void *param, u8 event, u32 timeout);
1344 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1346 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1347 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1349 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1351 /* ----- HCI Sockets ----- */
1352 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1353 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1354 int flag, struct sock *skip_sk);
1355 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1357 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1359 #define HCI_MGMT_VAR_LEN BIT(0)
1360 #define HCI_MGMT_NO_HDEV BIT(1)
1361 #define HCI_MGMT_UNTRUSTED BIT(2)
1362 #define HCI_MGMT_UNCONFIGURED BIT(3)
1364 struct hci_mgmt_handler {
1365 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1368 unsigned long flags;
1371 struct hci_mgmt_chan {
1372 struct list_head list;
1373 unsigned short channel;
1374 size_t handler_count;
1375 const struct hci_mgmt_handler *handlers;
1376 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1379 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1380 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1382 /* Management interface */
1383 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1384 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1385 BIT(BDADDR_LE_RANDOM))
1386 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1387 BIT(BDADDR_LE_PUBLIC) | \
1388 BIT(BDADDR_LE_RANDOM))
1390 /* These LE scan and inquiry parameters were chosen according to LE General
1391 * Discovery Procedure specification.
1393 #define DISCOV_LE_SCAN_WIN 0x12
1394 #define DISCOV_LE_SCAN_INT 0x12
1395 #define DISCOV_LE_TIMEOUT 10240 /* msec */
1396 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1397 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1398 #define DISCOV_BREDR_INQUIRY_LEN 0x08
1399 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
1401 int mgmt_new_settings(struct hci_dev *hdev);
1402 void mgmt_index_added(struct hci_dev *hdev);
1403 void mgmt_index_removed(struct hci_dev *hdev);
1404 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1405 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1406 int mgmt_update_adv_data(struct hci_dev *hdev);
1407 void mgmt_discoverable_timeout(struct hci_dev *hdev);
1408 void mgmt_adv_timeout_expired(struct hci_dev *hdev);
1409 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1411 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1412 u32 flags, u8 *name, u8 name_len);
1413 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1414 u8 link_type, u8 addr_type, u8 reason,
1415 bool mgmt_connected);
1416 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1417 u8 link_type, u8 addr_type, u8 status);
1418 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1419 u8 addr_type, u8 status);
1420 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1421 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1423 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1425 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1426 u8 link_type, u8 addr_type, u32 value,
1428 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1429 u8 link_type, u8 addr_type, u8 status);
1430 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1431 u8 link_type, u8 addr_type, u8 status);
1432 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1433 u8 link_type, u8 addr_type);
1434 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1435 u8 link_type, u8 addr_type, u8 status);
1436 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1437 u8 link_type, u8 addr_type, u8 status);
1438 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1439 u8 link_type, u8 addr_type, u32 passkey,
1441 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1442 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1443 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1444 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1446 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1447 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1448 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1449 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1450 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1451 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1452 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1453 bool mgmt_powering_down(struct hci_dev *hdev);
1454 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1455 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk);
1456 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1458 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1459 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1460 u16 max_interval, u16 latency, u16 timeout);
1461 void mgmt_reenable_advertising(struct hci_dev *hdev);
1462 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1464 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1466 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1467 __u8 ltk[16], __u8 key_size);
1469 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1472 #define SCO_AIRMODE_MASK 0x0003
1473 #define SCO_AIRMODE_CVSD 0x0000
1474 #define SCO_AIRMODE_TRANSP 0x0003
1476 #endif /* __HCI_CORE_H */