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 1
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 adv_info adv_instance;
383 struct list_head adv_instances;
384 unsigned int adv_instance_cnt;
385 __u8 cur_adv_instance;
386 __u16 adv_instance_timeout;
387 struct delayed_work adv_instance_expire;
391 struct delayed_work rpa_expired;
394 int (*open)(struct hci_dev *hdev);
395 int (*close)(struct hci_dev *hdev);
396 int (*flush)(struct hci_dev *hdev);
397 int (*setup)(struct hci_dev *hdev);
398 int (*shutdown)(struct hci_dev *hdev);
399 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
400 void (*notify)(struct hci_dev *hdev, unsigned int evt);
401 void (*hw_error)(struct hci_dev *hdev, u8 code);
402 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
405 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
408 struct list_head list;
428 __u8 features[HCI_MAX_PAGES][8];
434 __u8 pending_sec_level;
438 __u32 passkey_notify;
439 __u8 passkey_entered;
443 __u16 le_conn_min_interval;
444 __u16 le_conn_max_interval;
445 __u16 le_conn_interval;
446 __u16 le_conn_latency;
447 __u16 le_supv_timeout;
448 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
449 __u8 le_adv_data_len;
456 __u16 clock_accuracy;
458 unsigned long conn_info_timestamp;
466 struct sk_buff_head data_q;
467 struct list_head chan_list;
469 struct delayed_work disc_work;
470 struct delayed_work auto_accept_work;
471 struct delayed_work idle_work;
472 struct delayed_work le_conn_timeout;
475 struct dentry *debugfs;
477 struct hci_dev *hdev;
480 struct amp_mgr *amp_mgr;
482 struct hci_conn *link;
484 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
485 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
486 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
490 struct list_head list;
492 struct hci_conn *conn;
493 struct sk_buff_head data_q;
498 struct hci_conn_params {
499 struct list_head list;
500 struct list_head action;
505 u16 conn_min_interval;
506 u16 conn_max_interval;
508 u16 supervision_timeout;
511 HCI_AUTO_CONN_DISABLED,
512 HCI_AUTO_CONN_REPORT,
513 HCI_AUTO_CONN_DIRECT,
514 HCI_AUTO_CONN_ALWAYS,
515 HCI_AUTO_CONN_LINK_LOSS,
518 struct hci_conn *conn;
521 extern struct list_head hci_dev_list;
522 extern struct list_head hci_cb_list;
523 extern rwlock_t hci_dev_list_lock;
524 extern struct mutex hci_cb_list_lock;
526 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags)
527 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags)
528 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags)
529 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags)
530 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags)
531 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags)
532 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
534 #define hci_dev_clear_volatile_flags(hdev) \
536 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \
537 hci_dev_clear_flag(hdev, HCI_LE_ADV); \
538 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \
541 /* ----- HCI interface to upper protocols ----- */
542 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
543 int l2cap_disconn_ind(struct hci_conn *hcon);
544 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
546 #if IS_ENABLED(CONFIG_BT_BREDR)
547 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
548 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
550 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
556 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
561 /* ----- Inquiry cache ----- */
562 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
563 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
565 static inline void discovery_init(struct hci_dev *hdev)
567 hdev->discovery.state = DISCOVERY_STOPPED;
568 INIT_LIST_HEAD(&hdev->discovery.all);
569 INIT_LIST_HEAD(&hdev->discovery.unknown);
570 INIT_LIST_HEAD(&hdev->discovery.resolve);
571 hdev->discovery.report_invalid_rssi = true;
572 hdev->discovery.rssi = HCI_RSSI_INVALID;
575 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
577 hdev->discovery.result_filtering = false;
578 hdev->discovery.report_invalid_rssi = true;
579 hdev->discovery.rssi = HCI_RSSI_INVALID;
580 hdev->discovery.uuid_count = 0;
581 kfree(hdev->discovery.uuids);
582 hdev->discovery.uuids = NULL;
583 hdev->discovery.scan_start = 0;
584 hdev->discovery.scan_duration = 0;
587 static inline void adv_info_init(struct hci_dev *hdev)
589 memset(&hdev->adv_instance, 0, sizeof(struct adv_info));
592 bool hci_discovery_active(struct hci_dev *hdev);
594 void hci_discovery_set_state(struct hci_dev *hdev, int state);
596 static inline int inquiry_cache_empty(struct hci_dev *hdev)
598 return list_empty(&hdev->discovery.all);
601 static inline long inquiry_cache_age(struct hci_dev *hdev)
603 struct discovery_state *c = &hdev->discovery;
604 return jiffies - c->timestamp;
607 static inline long inquiry_entry_age(struct inquiry_entry *e)
609 return jiffies - e->timestamp;
612 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
614 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
616 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
619 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
620 struct inquiry_entry *ie);
621 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
623 void hci_inquiry_cache_flush(struct hci_dev *hdev);
625 /* ----- HCI Connections ----- */
628 HCI_CONN_REAUTH_PEND,
629 HCI_CONN_ENCRYPT_PEND,
630 HCI_CONN_RSWITCH_PEND,
631 HCI_CONN_MODE_CHANGE_PEND,
632 HCI_CONN_SCO_SETUP_PEND,
633 HCI_CONN_MGMT_CONNECTED,
634 HCI_CONN_SSP_ENABLED,
643 HCI_CONN_STK_ENCRYPT,
644 HCI_CONN_AUTH_INITIATOR,
646 HCI_CONN_PARAM_REMOVAL_PEND,
647 HCI_CONN_NEW_LINK_KEY,
650 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
652 struct hci_dev *hdev = conn->hdev;
653 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
654 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
657 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
659 struct hci_dev *hdev = conn->hdev;
660 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
661 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
664 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
666 struct hci_conn_hash *h = &hdev->conn_hash;
667 list_add_rcu(&c->list, &h->list);
677 if (c->role == HCI_ROLE_SLAVE)
687 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
689 struct hci_conn_hash *h = &hdev->conn_hash;
691 list_del_rcu(&c->list);
703 if (c->role == HCI_ROLE_SLAVE)
713 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
715 struct hci_conn_hash *h = &hdev->conn_hash;
731 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
733 struct hci_conn_hash *c = &hdev->conn_hash;
735 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
738 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
740 struct hci_conn_hash *h = &hdev->conn_hash;
742 __u8 type = INVALID_LINK;
746 list_for_each_entry_rcu(c, &h->list, list) {
747 if (c->handle == handle) {
758 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
761 struct hci_conn_hash *h = &hdev->conn_hash;
766 list_for_each_entry_rcu(c, &h->list, list) {
767 if (c->handle == handle) {
777 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
778 __u8 type, bdaddr_t *ba)
780 struct hci_conn_hash *h = &hdev->conn_hash;
785 list_for_each_entry_rcu(c, &h->list, list) {
786 if (c->type == type && !bacmp(&c->dst, ba)) {
797 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
798 __u8 type, __u16 state)
800 struct hci_conn_hash *h = &hdev->conn_hash;
805 list_for_each_entry_rcu(c, &h->list, list) {
806 if (c->type == type && c->state == state) {
817 int hci_disconnect(struct hci_conn *conn, __u8 reason);
818 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
819 void hci_sco_setup(struct hci_conn *conn, __u8 status);
821 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
823 int hci_conn_del(struct hci_conn *conn);
824 void hci_conn_hash_flush(struct hci_dev *hdev);
825 void hci_conn_check_pending(struct hci_dev *hdev);
827 struct hci_chan *hci_chan_create(struct hci_conn *conn);
828 void hci_chan_del(struct hci_chan *chan);
829 void hci_chan_list_flush(struct hci_conn *conn);
830 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
832 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
833 u8 dst_type, u8 sec_level, u16 conn_timeout,
835 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
836 u8 sec_level, u8 auth_type);
837 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
839 int hci_conn_check_link_mode(struct hci_conn *conn);
840 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
841 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
843 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
845 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
847 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
850 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
851 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
852 * working or anything else. They just guarantee that the object is available
853 * and can be dereferenced. So you can use its locks, local variables and any
854 * other constant data.
855 * Before accessing runtime data, you _must_ lock the object and then check that
856 * it is still running. As soon as you release the locks, the connection might
857 * get dropped, though.
859 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
860 * how long the underlying connection is held. So every channel that runs on the
861 * hci_conn object calls this to prevent the connection from disappearing. As
862 * long as you hold a device, you must also guarantee that you have a valid
863 * reference to the device via hci_conn_get() (or the initial reference from
865 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
866 * break because nobody cares for that. But this means, we cannot use
867 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
870 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
872 get_device(&conn->dev);
876 static inline void hci_conn_put(struct hci_conn *conn)
878 put_device(&conn->dev);
881 static inline void hci_conn_hold(struct hci_conn *conn)
883 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
885 atomic_inc(&conn->refcnt);
886 cancel_delayed_work(&conn->disc_work);
889 static inline void hci_conn_drop(struct hci_conn *conn)
891 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
893 if (atomic_dec_and_test(&conn->refcnt)) {
896 switch (conn->type) {
899 cancel_delayed_work(&conn->idle_work);
900 if (conn->state == BT_CONNECTED) {
901 timeo = conn->disc_timeout;
910 timeo = conn->disc_timeout;
918 cancel_delayed_work(&conn->disc_work);
919 queue_delayed_work(conn->hdev->workqueue,
920 &conn->disc_work, timeo);
924 /* ----- HCI Devices ----- */
925 static inline void hci_dev_put(struct hci_dev *d)
927 BT_DBG("%s orig refcnt %d", d->name,
928 atomic_read(&d->dev.kobj.kref.refcount));
933 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
935 BT_DBG("%s orig refcnt %d", d->name,
936 atomic_read(&d->dev.kobj.kref.refcount));
942 #define hci_dev_lock(d) mutex_lock(&d->lock)
943 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
945 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
946 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
948 static inline void *hci_get_drvdata(struct hci_dev *hdev)
950 return dev_get_drvdata(&hdev->dev);
953 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
955 dev_set_drvdata(&hdev->dev, data);
958 struct hci_dev *hci_dev_get(int index);
959 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
961 struct hci_dev *hci_alloc_dev(void);
962 void hci_free_dev(struct hci_dev *hdev);
963 int hci_register_dev(struct hci_dev *hdev);
964 void hci_unregister_dev(struct hci_dev *hdev);
965 int hci_suspend_dev(struct hci_dev *hdev);
966 int hci_resume_dev(struct hci_dev *hdev);
967 int hci_reset_dev(struct hci_dev *hdev);
968 int hci_dev_open(__u16 dev);
969 int hci_dev_close(__u16 dev);
970 int hci_dev_reset(__u16 dev);
971 int hci_dev_reset_stat(__u16 dev);
972 int hci_dev_cmd(unsigned int cmd, void __user *arg);
973 int hci_get_dev_list(void __user *arg);
974 int hci_get_dev_info(void __user *arg);
975 int hci_get_conn_list(void __user *arg);
976 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
977 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
978 int hci_inquiry(void __user *arg);
980 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
981 bdaddr_t *bdaddr, u8 type);
982 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
983 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
984 void hci_bdaddr_list_clear(struct list_head *list);
986 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
987 bdaddr_t *addr, u8 addr_type);
988 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
989 bdaddr_t *addr, u8 addr_type);
990 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
991 void hci_conn_params_clear_all(struct hci_dev *hdev);
992 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
994 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
998 void hci_uuids_clear(struct hci_dev *hdev);
1000 void hci_link_keys_clear(struct hci_dev *hdev);
1001 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1002 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1003 bdaddr_t *bdaddr, u8 *val, u8 type,
1004 u8 pin_len, bool *persistent);
1005 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1006 u8 addr_type, u8 type, u8 authenticated,
1007 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1008 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1009 u8 addr_type, u8 role);
1010 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1011 void hci_smp_ltks_clear(struct hci_dev *hdev);
1012 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1014 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1015 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1017 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1018 u8 addr_type, u8 val[16], bdaddr_t *rpa);
1019 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1020 void hci_smp_irks_clear(struct hci_dev *hdev);
1022 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1024 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1025 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1026 bdaddr_t *bdaddr, u8 bdaddr_type);
1027 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1028 u8 bdaddr_type, u8 *hash192, u8 *rand192,
1029 u8 *hash256, u8 *rand256);
1030 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1033 void hci_adv_instances_clear(struct hci_dev *hdev);
1034 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1035 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1036 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1037 u16 adv_data_len, u8 *adv_data,
1038 u16 scan_rsp_len, u8 *scan_rsp_data,
1039 u16 timeout, u16 duration);
1040 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1042 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1044 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1046 void hci_init_sysfs(struct hci_dev *hdev);
1047 void hci_conn_init_sysfs(struct hci_conn *conn);
1048 void hci_conn_add_sysfs(struct hci_conn *conn);
1049 void hci_conn_del_sysfs(struct hci_conn *conn);
1051 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1053 /* ----- LMP capabilities ----- */
1054 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
1055 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
1056 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
1057 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
1058 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
1059 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
1060 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
1061 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
1062 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
1063 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1064 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1065 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
1066 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1067 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1068 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1069 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1070 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1071 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1072 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1074 /* ----- Extended LMP capabilities ----- */
1075 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1076 #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
1077 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1078 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1079 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1080 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1082 /* ----- Host capabilities ----- */
1083 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1084 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1085 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1086 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1088 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \
1089 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1090 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1091 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1093 /* ----- HCI protocols ----- */
1094 #define HCI_PROTO_DEFER 0x01
1096 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1097 __u8 type, __u8 *flags)
1101 return l2cap_connect_ind(hdev, bdaddr);
1105 return sco_connect_ind(hdev, bdaddr, flags);
1108 BT_ERR("unknown link type %d", type);
1113 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1115 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1116 return HCI_ERROR_REMOTE_USER_TERM;
1118 return l2cap_disconn_ind(conn);
1121 /* ----- HCI callbacks ----- */
1123 struct list_head list;
1127 void (*connect_cfm) (struct hci_conn *conn, __u8 status);
1128 void (*disconn_cfm) (struct hci_conn *conn, __u8 status);
1129 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1131 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1132 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1135 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1139 mutex_lock(&hci_cb_list_lock);
1140 list_for_each_entry(cb, &hci_cb_list, list) {
1141 if (cb->connect_cfm)
1142 cb->connect_cfm(conn, status);
1144 mutex_unlock(&hci_cb_list_lock);
1146 if (conn->connect_cfm_cb)
1147 conn->connect_cfm_cb(conn, status);
1150 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1154 mutex_lock(&hci_cb_list_lock);
1155 list_for_each_entry(cb, &hci_cb_list, list) {
1156 if (cb->disconn_cfm)
1157 cb->disconn_cfm(conn, reason);
1159 mutex_unlock(&hci_cb_list_lock);
1161 if (conn->disconn_cfm_cb)
1162 conn->disconn_cfm_cb(conn, reason);
1165 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1170 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1173 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1175 mutex_lock(&hci_cb_list_lock);
1176 list_for_each_entry(cb, &hci_cb_list, list) {
1177 if (cb->security_cfm)
1178 cb->security_cfm(conn, status, encrypt);
1180 mutex_unlock(&hci_cb_list_lock);
1182 if (conn->security_cfm_cb)
1183 conn->security_cfm_cb(conn, status);
1186 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1191 if (conn->sec_level == BT_SECURITY_SDP)
1192 conn->sec_level = BT_SECURITY_LOW;
1194 if (conn->pending_sec_level > conn->sec_level)
1195 conn->sec_level = conn->pending_sec_level;
1197 mutex_lock(&hci_cb_list_lock);
1198 list_for_each_entry(cb, &hci_cb_list, list) {
1199 if (cb->security_cfm)
1200 cb->security_cfm(conn, status, encrypt);
1202 mutex_unlock(&hci_cb_list_lock);
1204 if (conn->security_cfm_cb)
1205 conn->security_cfm_cb(conn, status);
1208 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1212 mutex_lock(&hci_cb_list_lock);
1213 list_for_each_entry(cb, &hci_cb_list, list) {
1214 if (cb->key_change_cfm)
1215 cb->key_change_cfm(conn, status);
1217 mutex_unlock(&hci_cb_list_lock);
1220 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1225 mutex_lock(&hci_cb_list_lock);
1226 list_for_each_entry(cb, &hci_cb_list, list) {
1227 if (cb->role_switch_cfm)
1228 cb->role_switch_cfm(conn, status, role);
1230 mutex_unlock(&hci_cb_list_lock);
1233 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
1240 while (parsed < data_len - 1) {
1241 u8 field_len = data[0];
1246 parsed += field_len + 1;
1248 if (parsed > data_len)
1251 if (data[1] == type)
1254 data += field_len + 1;
1260 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1262 if (addr_type != ADDR_LE_DEV_RANDOM)
1265 if ((bdaddr->b[5] & 0xc0) == 0x40)
1271 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1273 if (addr_type == ADDR_LE_DEV_PUBLIC)
1276 /* Check for Random Static address type */
1277 if ((addr->b[5] & 0xc0) == 0xc0)
1283 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1284 bdaddr_t *bdaddr, u8 addr_type)
1286 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1289 return hci_find_irk_by_rpa(hdev, bdaddr);
1292 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1297 if (min > max || min < 6 || max > 3200)
1300 if (to_multiplier < 10 || to_multiplier > 3200)
1303 if (max >= to_multiplier * 8)
1306 max_latency = (to_multiplier * 8 / max) - 1;
1307 if (latency > 499 || latency > max_latency)
1313 int hci_register_cb(struct hci_cb *hcb);
1314 int hci_unregister_cb(struct hci_cb *hcb);
1316 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1317 const void *param, u32 timeout);
1318 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1319 const void *param, u8 event, u32 timeout);
1321 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1323 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1324 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1326 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1328 /* ----- HCI Sockets ----- */
1329 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1330 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1331 int flag, struct sock *skip_sk);
1332 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1334 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1336 #define HCI_MGMT_VAR_LEN BIT(0)
1337 #define HCI_MGMT_NO_HDEV BIT(1)
1338 #define HCI_MGMT_UNTRUSTED BIT(2)
1339 #define HCI_MGMT_UNCONFIGURED BIT(3)
1341 struct hci_mgmt_handler {
1342 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1345 unsigned long flags;
1348 struct hci_mgmt_chan {
1349 struct list_head list;
1350 unsigned short channel;
1351 size_t handler_count;
1352 const struct hci_mgmt_handler *handlers;
1353 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1356 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1357 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1359 /* Management interface */
1360 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1361 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1362 BIT(BDADDR_LE_RANDOM))
1363 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1364 BIT(BDADDR_LE_PUBLIC) | \
1365 BIT(BDADDR_LE_RANDOM))
1367 /* These LE scan and inquiry parameters were chosen according to LE General
1368 * Discovery Procedure specification.
1370 #define DISCOV_LE_SCAN_WIN 0x12
1371 #define DISCOV_LE_SCAN_INT 0x12
1372 #define DISCOV_LE_TIMEOUT 10240 /* msec */
1373 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1374 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1375 #define DISCOV_BREDR_INQUIRY_LEN 0x08
1376 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */
1378 int mgmt_new_settings(struct hci_dev *hdev);
1379 void mgmt_index_added(struct hci_dev *hdev);
1380 void mgmt_index_removed(struct hci_dev *hdev);
1381 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1382 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1383 int mgmt_update_adv_data(struct hci_dev *hdev);
1384 void mgmt_discoverable_timeout(struct hci_dev *hdev);
1385 void mgmt_adv_timeout_expired(struct hci_dev *hdev);
1386 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1388 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1389 u32 flags, u8 *name, u8 name_len);
1390 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1391 u8 link_type, u8 addr_type, u8 reason,
1392 bool mgmt_connected);
1393 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1394 u8 link_type, u8 addr_type, u8 status);
1395 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1396 u8 addr_type, u8 status);
1397 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1398 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1400 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1402 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1403 u8 link_type, u8 addr_type, u32 value,
1405 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1406 u8 link_type, u8 addr_type, u8 status);
1407 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1408 u8 link_type, u8 addr_type, u8 status);
1409 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1410 u8 link_type, u8 addr_type);
1411 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1412 u8 link_type, u8 addr_type, u8 status);
1413 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1414 u8 link_type, u8 addr_type, u8 status);
1415 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1416 u8 link_type, u8 addr_type, u32 passkey,
1418 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1419 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1420 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1421 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1423 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1424 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1425 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1426 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1427 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1428 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1429 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1430 bool mgmt_powering_down(struct hci_dev *hdev);
1431 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1432 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk);
1433 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1435 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1436 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1437 u16 max_interval, u16 latency, u16 timeout);
1438 void mgmt_reenable_advertising(struct hci_dev *hdev);
1439 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1441 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1443 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1444 __u8 ltk[16], __u8 key_size);
1446 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1449 #define SCO_AIRMODE_MASK 0x0003
1450 #define SCO_AIRMODE_CVSD 0x0000
1451 #define SCO_AIRMODE_TRANSP 0x0003
1453 #endif /* __HCI_CORE_H */