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>
31 #define HCI_PRIO_MAX 7
33 /* HCI Core structures */
37 __u8 pscan_period_mode;
45 struct inquiry_entry {
46 struct list_head all; /* inq_cache.all */
47 struct list_head list; /* unknown or resolve */
55 struct inquiry_data data;
58 struct discovery_state {
67 struct list_head all; /* All devices found during inquiry */
68 struct list_head unknown; /* Name state not known */
69 struct list_head resolve; /* Name needs to be resolved */
73 struct hci_conn_hash {
74 struct list_head list;
82 struct list_head list;
87 struct list_head list;
94 struct list_head list;
106 struct list_head list;
109 u8 val[HCI_LINK_KEY_SIZE];
114 struct list_head list;
120 #define HCI_MAX_SHORT_NAME_LENGTH 10
127 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
130 #define HCI_MAX_PAGES 3
132 #define NUM_REASSEMBLY 4
134 struct list_head list;
143 bdaddr_t static_addr;
144 __u8 dev_name[HCI_MAX_NAME_LENGTH];
145 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
146 __u8 eir[HCI_MAX_EIR_LENGTH];
151 __u8 features[HCI_MAX_PAGES][8];
153 __u8 le_white_list_size;
165 __u16 page_scan_interval;
166 __u16 page_scan_window;
168 __u16 le_scan_interval;
169 __u16 le_scan_window;
182 __u16 sniff_min_interval;
183 __u16 sniff_max_interval;
188 __u32 amp_min_latency;
192 __u16 amp_assoc_size;
193 __u32 amp_max_flush_to;
194 __u32 amp_be_flush_to;
196 struct amp_assoc loc_assoc;
200 unsigned int auto_accept_delay;
202 unsigned long quirks;
205 unsigned int acl_cnt;
206 unsigned int sco_cnt;
209 unsigned int acl_mtu;
210 unsigned int sco_mtu;
212 unsigned int acl_pkts;
213 unsigned int sco_pkts;
214 unsigned int le_pkts;
221 unsigned long acl_last_tx;
222 unsigned long sco_last_tx;
223 unsigned long le_last_tx;
225 struct workqueue_struct *workqueue;
226 struct workqueue_struct *req_workqueue;
228 struct work_struct power_on;
229 struct delayed_work power_off;
231 __u16 discov_timeout;
232 struct delayed_work discov_off;
234 struct delayed_work service_cache;
236 struct timer_list cmd_timer;
238 struct work_struct rx_work;
239 struct work_struct cmd_work;
240 struct work_struct tx_work;
242 struct sk_buff_head rx_q;
243 struct sk_buff_head raw_q;
244 struct sk_buff_head cmd_q;
246 struct sk_buff *recv_evt;
247 struct sk_buff *sent_cmd;
248 struct sk_buff *reassembly[NUM_REASSEMBLY];
250 struct mutex req_lock;
251 wait_queue_head_t req_wait_q;
255 struct list_head mgmt_pending;
257 struct discovery_state discovery;
258 struct hci_conn_hash conn_hash;
259 struct list_head blacklist;
261 struct list_head uuids;
263 struct list_head link_keys;
265 struct list_head long_term_keys;
267 struct list_head remote_oob_data;
269 struct hci_dev_stats stat;
273 struct dentry *debugfs;
277 struct rfkill *rfkill;
279 unsigned long dev_flags;
281 struct delayed_work le_scan_disable;
284 __u8 adv_data[HCI_MAX_AD_LENGTH];
287 int (*open)(struct hci_dev *hdev);
288 int (*close)(struct hci_dev *hdev);
289 int (*flush)(struct hci_dev *hdev);
290 int (*setup)(struct hci_dev *hdev);
291 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
292 void (*notify)(struct hci_dev *hdev, unsigned int evt);
295 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
298 struct list_head list;
313 __u8 features[HCI_MAX_PAGES][8];
321 __u8 pending_sec_level;
325 __u32 passkey_notify;
326 __u8 passkey_entered;
338 struct sk_buff_head data_q;
339 struct list_head chan_list;
341 struct delayed_work disc_work;
342 struct timer_list idle_timer;
343 struct timer_list auto_accept_timer;
347 struct hci_dev *hdev;
351 struct amp_mgr *amp_mgr;
353 struct hci_conn *link;
355 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
356 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
357 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
361 struct list_head list;
363 struct hci_conn *conn;
364 struct sk_buff_head data_q;
369 extern struct list_head hci_dev_list;
370 extern struct list_head hci_cb_list;
371 extern rwlock_t hci_dev_list_lock;
372 extern rwlock_t hci_cb_list_lock;
374 /* ----- HCI interface to upper protocols ----- */
375 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
376 extern void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
377 extern int l2cap_disconn_ind(struct hci_conn *hcon);
378 extern void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
379 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
380 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb,
383 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
384 extern void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
385 extern void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
386 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
388 /* ----- Inquiry cache ----- */
389 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
390 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
392 static inline void discovery_init(struct hci_dev *hdev)
394 hdev->discovery.state = DISCOVERY_STOPPED;
395 INIT_LIST_HEAD(&hdev->discovery.all);
396 INIT_LIST_HEAD(&hdev->discovery.unknown);
397 INIT_LIST_HEAD(&hdev->discovery.resolve);
400 bool hci_discovery_active(struct hci_dev *hdev);
402 void hci_discovery_set_state(struct hci_dev *hdev, int state);
404 static inline int inquiry_cache_empty(struct hci_dev *hdev)
406 return list_empty(&hdev->discovery.all);
409 static inline long inquiry_cache_age(struct hci_dev *hdev)
411 struct discovery_state *c = &hdev->discovery;
412 return jiffies - c->timestamp;
415 static inline long inquiry_entry_age(struct inquiry_entry *e)
417 return jiffies - e->timestamp;
420 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
422 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
424 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
427 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
428 struct inquiry_entry *ie);
429 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
430 bool name_known, bool *ssp);
431 void hci_inquiry_cache_flush(struct hci_dev *hdev);
433 /* ----- HCI Connections ----- */
436 HCI_CONN_REAUTH_PEND,
437 HCI_CONN_ENCRYPT_PEND,
438 HCI_CONN_RSWITCH_PEND,
439 HCI_CONN_MODE_CHANGE_PEND,
440 HCI_CONN_SCO_SETUP_PEND,
441 HCI_CONN_LE_SMP_PEND,
442 HCI_CONN_MGMT_CONNECTED,
443 HCI_CONN_SSP_ENABLED,
448 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
450 struct hci_dev *hdev = conn->hdev;
451 return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
452 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
455 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
457 struct hci_conn_hash *h = &hdev->conn_hash;
458 list_add_rcu(&c->list, &h->list);
476 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
478 struct hci_conn_hash *h = &hdev->conn_hash;
480 list_del_rcu(&c->list);
500 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
502 struct hci_conn_hash *h = &hdev->conn_hash;
518 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
521 struct hci_conn_hash *h = &hdev->conn_hash;
526 list_for_each_entry_rcu(c, &h->list, list) {
527 if (c->handle == handle) {
537 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
538 __u8 type, bdaddr_t *ba)
540 struct hci_conn_hash *h = &hdev->conn_hash;
545 list_for_each_entry_rcu(c, &h->list, list) {
546 if (c->type == type && !bacmp(&c->dst, ba)) {
557 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
558 __u8 type, __u16 state)
560 struct hci_conn_hash *h = &hdev->conn_hash;
565 list_for_each_entry_rcu(c, &h->list, list) {
566 if (c->type == type && c->state == state) {
577 void hci_disconnect(struct hci_conn *conn, __u8 reason);
578 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
579 void hci_sco_setup(struct hci_conn *conn, __u8 status);
581 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
582 int hci_conn_del(struct hci_conn *conn);
583 void hci_conn_hash_flush(struct hci_dev *hdev);
584 void hci_conn_check_pending(struct hci_dev *hdev);
586 struct hci_chan *hci_chan_create(struct hci_conn *conn);
587 void hci_chan_del(struct hci_chan *chan);
588 void hci_chan_list_flush(struct hci_conn *conn);
589 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
591 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
592 __u8 dst_type, __u8 sec_level, __u8 auth_type);
593 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
595 int hci_conn_check_link_mode(struct hci_conn *conn);
596 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
597 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
598 int hci_conn_change_link_key(struct hci_conn *conn);
599 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
601 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
604 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
605 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
606 * working or anything else. They just guarantee that the object is available
607 * and can be dereferenced. So you can use its locks, local variables and any
608 * other constant data.
609 * Before accessing runtime data, you _must_ lock the object and then check that
610 * it is still running. As soon as you release the locks, the connection might
611 * get dropped, though.
613 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
614 * how long the underlying connection is held. So every channel that runs on the
615 * hci_conn object calls this to prevent the connection from disappearing. As
616 * long as you hold a device, you must also guarantee that you have a valid
617 * reference to the device via hci_conn_get() (or the initial reference from
619 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
620 * break because nobody cares for that. But this means, we cannot use
621 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
624 static inline void hci_conn_get(struct hci_conn *conn)
626 get_device(&conn->dev);
629 static inline void hci_conn_put(struct hci_conn *conn)
631 put_device(&conn->dev);
634 static inline void hci_conn_hold(struct hci_conn *conn)
636 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
638 atomic_inc(&conn->refcnt);
639 cancel_delayed_work(&conn->disc_work);
642 static inline void hci_conn_drop(struct hci_conn *conn)
644 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
646 if (atomic_dec_and_test(&conn->refcnt)) {
649 switch (conn->type) {
652 del_timer(&conn->idle_timer);
653 if (conn->state == BT_CONNECTED) {
654 timeo = conn->disc_timeout;
658 timeo = msecs_to_jiffies(10);
663 timeo = conn->disc_timeout;
667 timeo = msecs_to_jiffies(10);
671 cancel_delayed_work(&conn->disc_work);
672 queue_delayed_work(conn->hdev->workqueue,
673 &conn->disc_work, timeo);
677 /* ----- HCI Devices ----- */
678 static inline void hci_dev_put(struct hci_dev *d)
680 BT_DBG("%s orig refcnt %d", d->name,
681 atomic_read(&d->dev.kobj.kref.refcount));
686 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
688 BT_DBG("%s orig refcnt %d", d->name,
689 atomic_read(&d->dev.kobj.kref.refcount));
695 #define hci_dev_lock(d) mutex_lock(&d->lock)
696 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
698 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
699 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
701 static inline void *hci_get_drvdata(struct hci_dev *hdev)
703 return dev_get_drvdata(&hdev->dev);
706 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
708 dev_set_drvdata(&hdev->dev, data);
711 struct hci_dev *hci_dev_get(int index);
712 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
714 struct hci_dev *hci_alloc_dev(void);
715 void hci_free_dev(struct hci_dev *hdev);
716 int hci_register_dev(struct hci_dev *hdev);
717 void hci_unregister_dev(struct hci_dev *hdev);
718 int hci_suspend_dev(struct hci_dev *hdev);
719 int hci_resume_dev(struct hci_dev *hdev);
720 int hci_dev_open(__u16 dev);
721 int hci_dev_close(__u16 dev);
722 int hci_dev_reset(__u16 dev);
723 int hci_dev_reset_stat(__u16 dev);
724 int hci_dev_cmd(unsigned int cmd, void __user *arg);
725 int hci_get_dev_list(void __user *arg);
726 int hci_get_dev_info(void __user *arg);
727 int hci_get_conn_list(void __user *arg);
728 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
729 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
730 int hci_inquiry(void __user *arg);
732 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
734 int hci_blacklist_clear(struct hci_dev *hdev);
735 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
736 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
738 int hci_uuids_clear(struct hci_dev *hdev);
740 int hci_link_keys_clear(struct hci_dev *hdev);
741 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
742 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
743 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
744 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
745 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
746 int new_key, u8 authenticated, u8 tk[16], u8 enc_size,
747 __le16 ediv, u8 rand[8]);
748 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
750 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
751 int hci_smp_ltks_clear(struct hci_dev *hdev);
752 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
754 int hci_remote_oob_data_clear(struct hci_dev *hdev);
755 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
757 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
759 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
761 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
763 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
764 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
765 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
767 void hci_init_sysfs(struct hci_dev *hdev);
768 int hci_add_sysfs(struct hci_dev *hdev);
769 void hci_del_sysfs(struct hci_dev *hdev);
770 void hci_conn_init_sysfs(struct hci_conn *conn);
771 void hci_conn_add_sysfs(struct hci_conn *conn);
772 void hci_conn_del_sysfs(struct hci_conn *conn);
774 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
776 /* ----- LMP capabilities ----- */
777 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
778 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
779 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
780 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
781 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
782 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
783 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
784 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
785 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
786 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
787 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
788 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
789 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
790 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
791 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
792 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
793 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
794 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
795 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
797 /* ----- Extended LMP capabilities ----- */
798 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
799 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
800 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
802 /* ----- HCI protocols ----- */
803 #define HCI_PROTO_DEFER 0x01
805 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
806 __u8 type, __u8 *flags)
810 return l2cap_connect_ind(hdev, bdaddr);
814 return sco_connect_ind(hdev, bdaddr, flags);
817 BT_ERR("unknown link type %d", type);
822 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
824 switch (conn->type) {
827 l2cap_connect_cfm(conn, status);
832 sco_connect_cfm(conn, status);
836 BT_ERR("unknown link type %d", conn->type);
840 if (conn->connect_cfm_cb)
841 conn->connect_cfm_cb(conn, status);
844 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
846 if (conn->type != ACL_LINK && conn->type != LE_LINK)
847 return HCI_ERROR_REMOTE_USER_TERM;
849 return l2cap_disconn_ind(conn);
852 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
854 switch (conn->type) {
857 l2cap_disconn_cfm(conn, reason);
862 sco_disconn_cfm(conn, reason);
865 /* L2CAP would be handled for BREDR chan */
870 BT_ERR("unknown link type %d", conn->type);
874 if (conn->disconn_cfm_cb)
875 conn->disconn_cfm_cb(conn, reason);
878 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
882 if (conn->type != ACL_LINK && conn->type != LE_LINK)
885 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
888 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
889 l2cap_security_cfm(conn, status, encrypt);
891 if (conn->security_cfm_cb)
892 conn->security_cfm_cb(conn, status);
895 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
898 if (conn->type != ACL_LINK && conn->type != LE_LINK)
901 l2cap_security_cfm(conn, status, encrypt);
903 if (conn->security_cfm_cb)
904 conn->security_cfm_cb(conn, status);
907 /* ----- HCI callbacks ----- */
909 struct list_head list;
913 void (*security_cfm) (struct hci_conn *conn, __u8 status,
915 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
916 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
919 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
924 hci_proto_auth_cfm(conn, status);
926 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
929 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
931 read_lock(&hci_cb_list_lock);
932 list_for_each_entry(cb, &hci_cb_list, list) {
933 if (cb->security_cfm)
934 cb->security_cfm(conn, status, encrypt);
936 read_unlock(&hci_cb_list_lock);
939 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
944 if (conn->sec_level == BT_SECURITY_SDP)
945 conn->sec_level = BT_SECURITY_LOW;
947 if (conn->pending_sec_level > conn->sec_level)
948 conn->sec_level = conn->pending_sec_level;
950 hci_proto_encrypt_cfm(conn, status, encrypt);
952 read_lock(&hci_cb_list_lock);
953 list_for_each_entry(cb, &hci_cb_list, list) {
954 if (cb->security_cfm)
955 cb->security_cfm(conn, status, encrypt);
957 read_unlock(&hci_cb_list_lock);
960 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
964 read_lock(&hci_cb_list_lock);
965 list_for_each_entry(cb, &hci_cb_list, list) {
966 if (cb->key_change_cfm)
967 cb->key_change_cfm(conn, status);
969 read_unlock(&hci_cb_list_lock);
972 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
977 read_lock(&hci_cb_list_lock);
978 list_for_each_entry(cb, &hci_cb_list, list) {
979 if (cb->role_switch_cfm)
980 cb->role_switch_cfm(conn, status, role);
982 read_unlock(&hci_cb_list_lock);
985 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
992 while (parsed < data_len - 1) {
993 u8 field_len = data[0];
998 parsed += field_len + 1;
1000 if (parsed > data_len)
1003 if (data[1] == type)
1006 data += field_len + 1;
1012 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
1016 while (parsed < eir_len) {
1017 u8 field_len = eir[0];
1022 parsed += field_len + 1;
1023 eir += field_len + 1;
1029 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
1032 eir[eir_len++] = sizeof(type) + data_len;
1033 eir[eir_len++] = type;
1034 memcpy(&eir[eir_len], data, data_len);
1035 eir_len += data_len;
1040 int hci_register_cb(struct hci_cb *hcb);
1041 int hci_unregister_cb(struct hci_cb *hcb);
1043 struct hci_request {
1044 struct hci_dev *hdev;
1045 struct sk_buff_head cmd_q;
1047 /* If something goes wrong when building the HCI request, the error
1048 * value is stored in this field.
1053 void hci_req_init(struct hci_request *req, struct hci_dev *hdev);
1054 int hci_req_run(struct hci_request *req, hci_req_complete_t complete);
1055 void hci_req_add(struct hci_request *req, u16 opcode, u32 plen,
1057 void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen,
1058 const void *param, u8 event);
1059 void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
1061 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1062 const void *param, u32 timeout);
1063 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1064 const void *param, u8 event, u32 timeout);
1066 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1068 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1069 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1071 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1073 /* ----- HCI Sockets ----- */
1074 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1075 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1076 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1078 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1080 /* Management interface */
1081 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1082 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1083 BIT(BDADDR_LE_RANDOM))
1084 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1085 BIT(BDADDR_LE_PUBLIC) | \
1086 BIT(BDADDR_LE_RANDOM))
1088 /* These LE scan and inquiry parameters were chosen according to LE General
1089 * Discovery Procedure specification.
1091 #define DISCOV_LE_SCAN_WIN 0x12
1092 #define DISCOV_LE_SCAN_INT 0x12
1093 #define DISCOV_LE_TIMEOUT msecs_to_jiffies(10240)
1094 #define DISCOV_INTERLEAVED_TIMEOUT msecs_to_jiffies(5120)
1095 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1096 #define DISCOV_BREDR_INQUIRY_LEN 0x08
1098 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1099 void mgmt_index_added(struct hci_dev *hdev);
1100 void mgmt_index_removed(struct hci_dev *hdev);
1101 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1102 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1103 void mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
1104 void mgmt_connectable(struct hci_dev *hdev, u8 connectable);
1105 void mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
1106 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1108 void mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1109 u8 addr_type, u32 flags, u8 *name, u8 name_len,
1111 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1112 u8 link_type, u8 addr_type, u8 reason);
1113 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1114 u8 link_type, u8 addr_type, u8 status);
1115 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1116 u8 addr_type, u8 status);
1117 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1118 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1120 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1122 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1123 u8 link_type, u8 addr_type, __le32 value,
1125 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1126 u8 link_type, u8 addr_type, u8 status);
1127 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1128 u8 link_type, u8 addr_type, u8 status);
1129 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1130 u8 link_type, u8 addr_type);
1131 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1132 u8 link_type, u8 addr_type, u8 status);
1133 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1134 u8 link_type, u8 addr_type, u8 status);
1135 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1136 u8 link_type, u8 addr_type, u32 passkey,
1138 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1139 u8 addr_type, u8 status);
1140 int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1141 int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1142 int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1144 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1145 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
1146 u8 *randomizer, u8 status);
1147 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1148 u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1149 u8 ssp, u8 *eir, u16 eir_len);
1150 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1151 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1152 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1153 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1154 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1155 int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
1156 void mgmt_reenable_advertising(struct hci_dev *hdev);
1158 /* HCI info for socket */
1159 #define hci_pi(sk) ((struct hci_pinfo *) sk)
1163 struct hci_dev *hdev;
1164 struct hci_filter filter;
1166 unsigned short channel;
1169 /* HCI security filter */
1170 #define HCI_SFLT_MAX_OGF 5
1172 struct hci_sec_filter {
1174 __u32 event_mask[2];
1175 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1178 /* ----- HCI requests ----- */
1179 #define HCI_REQ_DONE 0
1180 #define HCI_REQ_PEND 1
1181 #define HCI_REQ_CANCELED 2
1183 #define hci_req_lock(d) mutex_lock(&d->req_lock)
1184 #define hci_req_unlock(d) mutex_unlock(&d->req_lock)
1186 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1187 u16 latency, u16 to_multiplier);
1188 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1191 #define SCO_AIRMODE_MASK 0x0003
1192 #define SCO_AIRMODE_CVSD 0x0000
1193 #define SCO_AIRMODE_TRANSP 0x0003
1195 #endif /* __HCI_CORE_H */