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];
286 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
287 __u8 scan_rsp_data_len;
289 int (*open)(struct hci_dev *hdev);
290 int (*close)(struct hci_dev *hdev);
291 int (*flush)(struct hci_dev *hdev);
292 int (*setup)(struct hci_dev *hdev);
293 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
294 void (*notify)(struct hci_dev *hdev, unsigned int evt);
297 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
300 struct list_head list;
315 __u8 features[HCI_MAX_PAGES][8];
323 __u8 pending_sec_level;
327 __u32 passkey_notify;
328 __u8 passkey_entered;
340 struct sk_buff_head data_q;
341 struct list_head chan_list;
343 struct delayed_work disc_work;
344 struct delayed_work auto_accept_work;
345 struct timer_list idle_timer;
349 struct hci_dev *hdev;
353 struct amp_mgr *amp_mgr;
355 struct hci_conn *link;
357 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
358 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
359 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
363 struct list_head list;
365 struct hci_conn *conn;
366 struct sk_buff_head data_q;
371 extern struct list_head hci_dev_list;
372 extern struct list_head hci_cb_list;
373 extern rwlock_t hci_dev_list_lock;
374 extern rwlock_t hci_cb_list_lock;
376 /* ----- HCI interface to upper protocols ----- */
377 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
378 extern void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
379 extern int l2cap_disconn_ind(struct hci_conn *hcon);
380 extern void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
381 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
382 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb,
385 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
386 extern void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
387 extern void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
388 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
390 /* ----- Inquiry cache ----- */
391 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
392 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
394 static inline void discovery_init(struct hci_dev *hdev)
396 hdev->discovery.state = DISCOVERY_STOPPED;
397 INIT_LIST_HEAD(&hdev->discovery.all);
398 INIT_LIST_HEAD(&hdev->discovery.unknown);
399 INIT_LIST_HEAD(&hdev->discovery.resolve);
402 bool hci_discovery_active(struct hci_dev *hdev);
404 void hci_discovery_set_state(struct hci_dev *hdev, int state);
406 static inline int inquiry_cache_empty(struct hci_dev *hdev)
408 return list_empty(&hdev->discovery.all);
411 static inline long inquiry_cache_age(struct hci_dev *hdev)
413 struct discovery_state *c = &hdev->discovery;
414 return jiffies - c->timestamp;
417 static inline long inquiry_entry_age(struct inquiry_entry *e)
419 return jiffies - e->timestamp;
422 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
424 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
426 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
429 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
430 struct inquiry_entry *ie);
431 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
432 bool name_known, bool *ssp);
433 void hci_inquiry_cache_flush(struct hci_dev *hdev);
435 /* ----- HCI Connections ----- */
438 HCI_CONN_REAUTH_PEND,
439 HCI_CONN_ENCRYPT_PEND,
440 HCI_CONN_RSWITCH_PEND,
441 HCI_CONN_MODE_CHANGE_PEND,
442 HCI_CONN_SCO_SETUP_PEND,
443 HCI_CONN_LE_SMP_PEND,
444 HCI_CONN_MGMT_CONNECTED,
445 HCI_CONN_SSP_ENABLED,
450 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
452 struct hci_dev *hdev = conn->hdev;
453 return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
454 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
457 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
459 struct hci_conn_hash *h = &hdev->conn_hash;
460 list_add_rcu(&c->list, &h->list);
478 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
480 struct hci_conn_hash *h = &hdev->conn_hash;
482 list_del_rcu(&c->list);
502 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
504 struct hci_conn_hash *h = &hdev->conn_hash;
520 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
523 struct hci_conn_hash *h = &hdev->conn_hash;
528 list_for_each_entry_rcu(c, &h->list, list) {
529 if (c->handle == handle) {
539 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
540 __u8 type, bdaddr_t *ba)
542 struct hci_conn_hash *h = &hdev->conn_hash;
547 list_for_each_entry_rcu(c, &h->list, list) {
548 if (c->type == type && !bacmp(&c->dst, ba)) {
559 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
560 __u8 type, __u16 state)
562 struct hci_conn_hash *h = &hdev->conn_hash;
567 list_for_each_entry_rcu(c, &h->list, list) {
568 if (c->type == type && c->state == state) {
579 void hci_disconnect(struct hci_conn *conn, __u8 reason);
580 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
581 void hci_sco_setup(struct hci_conn *conn, __u8 status);
583 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
584 int hci_conn_del(struct hci_conn *conn);
585 void hci_conn_hash_flush(struct hci_dev *hdev);
586 void hci_conn_check_pending(struct hci_dev *hdev);
588 struct hci_chan *hci_chan_create(struct hci_conn *conn);
589 void hci_chan_del(struct hci_chan *chan);
590 void hci_chan_list_flush(struct hci_conn *conn);
591 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
593 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
594 __u8 dst_type, __u8 sec_level, __u8 auth_type);
595 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
597 int hci_conn_check_link_mode(struct hci_conn *conn);
598 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
599 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
600 int hci_conn_change_link_key(struct hci_conn *conn);
601 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
603 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
606 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
607 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
608 * working or anything else. They just guarantee that the object is available
609 * and can be dereferenced. So you can use its locks, local variables and any
610 * other constant data.
611 * Before accessing runtime data, you _must_ lock the object and then check that
612 * it is still running. As soon as you release the locks, the connection might
613 * get dropped, though.
615 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
616 * how long the underlying connection is held. So every channel that runs on the
617 * hci_conn object calls this to prevent the connection from disappearing. As
618 * long as you hold a device, you must also guarantee that you have a valid
619 * reference to the device via hci_conn_get() (or the initial reference from
621 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
622 * break because nobody cares for that. But this means, we cannot use
623 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
626 static inline void hci_conn_get(struct hci_conn *conn)
628 get_device(&conn->dev);
631 static inline void hci_conn_put(struct hci_conn *conn)
633 put_device(&conn->dev);
636 static inline void hci_conn_hold(struct hci_conn *conn)
638 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
640 atomic_inc(&conn->refcnt);
641 cancel_delayed_work(&conn->disc_work);
644 static inline void hci_conn_drop(struct hci_conn *conn)
646 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
648 if (atomic_dec_and_test(&conn->refcnt)) {
651 switch (conn->type) {
654 del_timer(&conn->idle_timer);
655 if (conn->state == BT_CONNECTED) {
656 timeo = conn->disc_timeout;
660 timeo = msecs_to_jiffies(10);
665 timeo = conn->disc_timeout;
669 timeo = msecs_to_jiffies(10);
673 cancel_delayed_work(&conn->disc_work);
674 queue_delayed_work(conn->hdev->workqueue,
675 &conn->disc_work, timeo);
679 /* ----- HCI Devices ----- */
680 static inline void hci_dev_put(struct hci_dev *d)
682 BT_DBG("%s orig refcnt %d", d->name,
683 atomic_read(&d->dev.kobj.kref.refcount));
688 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
690 BT_DBG("%s orig refcnt %d", d->name,
691 atomic_read(&d->dev.kobj.kref.refcount));
697 #define hci_dev_lock(d) mutex_lock(&d->lock)
698 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
700 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
701 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
703 static inline void *hci_get_drvdata(struct hci_dev *hdev)
705 return dev_get_drvdata(&hdev->dev);
708 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
710 dev_set_drvdata(&hdev->dev, data);
713 struct hci_dev *hci_dev_get(int index);
714 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
716 struct hci_dev *hci_alloc_dev(void);
717 void hci_free_dev(struct hci_dev *hdev);
718 int hci_register_dev(struct hci_dev *hdev);
719 void hci_unregister_dev(struct hci_dev *hdev);
720 int hci_suspend_dev(struct hci_dev *hdev);
721 int hci_resume_dev(struct hci_dev *hdev);
722 int hci_dev_open(__u16 dev);
723 int hci_dev_close(__u16 dev);
724 int hci_dev_reset(__u16 dev);
725 int hci_dev_reset_stat(__u16 dev);
726 int hci_dev_cmd(unsigned int cmd, void __user *arg);
727 int hci_get_dev_list(void __user *arg);
728 int hci_get_dev_info(void __user *arg);
729 int hci_get_conn_list(void __user *arg);
730 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
731 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
732 int hci_inquiry(void __user *arg);
734 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
736 int hci_blacklist_clear(struct hci_dev *hdev);
737 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
738 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
740 int hci_uuids_clear(struct hci_dev *hdev);
742 int hci_link_keys_clear(struct hci_dev *hdev);
743 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
744 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
745 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
746 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
747 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
748 int new_key, u8 authenticated, u8 tk[16], u8 enc_size,
749 __le16 ediv, u8 rand[8]);
750 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
752 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
753 int hci_smp_ltks_clear(struct hci_dev *hdev);
754 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
756 int hci_remote_oob_data_clear(struct hci_dev *hdev);
757 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
759 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
761 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
763 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
765 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
766 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
767 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
769 void hci_init_sysfs(struct hci_dev *hdev);
770 int hci_add_sysfs(struct hci_dev *hdev);
771 void hci_del_sysfs(struct hci_dev *hdev);
772 void hci_conn_init_sysfs(struct hci_conn *conn);
773 void hci_conn_add_sysfs(struct hci_conn *conn);
774 void hci_conn_del_sysfs(struct hci_conn *conn);
776 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
778 /* ----- LMP capabilities ----- */
779 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
780 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
781 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
782 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
783 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
784 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
785 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
786 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
787 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
788 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
789 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
790 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
791 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
792 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
793 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
794 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
795 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
796 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
797 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
799 /* ----- Extended LMP capabilities ----- */
800 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
801 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
802 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
804 /* ----- HCI protocols ----- */
805 #define HCI_PROTO_DEFER 0x01
807 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
808 __u8 type, __u8 *flags)
812 return l2cap_connect_ind(hdev, bdaddr);
816 return sco_connect_ind(hdev, bdaddr, flags);
819 BT_ERR("unknown link type %d", type);
824 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
826 switch (conn->type) {
829 l2cap_connect_cfm(conn, status);
834 sco_connect_cfm(conn, status);
838 BT_ERR("unknown link type %d", conn->type);
842 if (conn->connect_cfm_cb)
843 conn->connect_cfm_cb(conn, status);
846 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
848 if (conn->type != ACL_LINK && conn->type != LE_LINK)
849 return HCI_ERROR_REMOTE_USER_TERM;
851 return l2cap_disconn_ind(conn);
854 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
856 switch (conn->type) {
859 l2cap_disconn_cfm(conn, reason);
864 sco_disconn_cfm(conn, reason);
867 /* L2CAP would be handled for BREDR chan */
872 BT_ERR("unknown link type %d", conn->type);
876 if (conn->disconn_cfm_cb)
877 conn->disconn_cfm_cb(conn, reason);
880 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
884 if (conn->type != ACL_LINK && conn->type != LE_LINK)
887 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
890 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
891 l2cap_security_cfm(conn, status, encrypt);
893 if (conn->security_cfm_cb)
894 conn->security_cfm_cb(conn, status);
897 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
900 if (conn->type != ACL_LINK && conn->type != LE_LINK)
903 l2cap_security_cfm(conn, status, encrypt);
905 if (conn->security_cfm_cb)
906 conn->security_cfm_cb(conn, status);
909 /* ----- HCI callbacks ----- */
911 struct list_head list;
915 void (*security_cfm) (struct hci_conn *conn, __u8 status,
917 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
918 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
921 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
926 hci_proto_auth_cfm(conn, status);
928 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
931 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
933 read_lock(&hci_cb_list_lock);
934 list_for_each_entry(cb, &hci_cb_list, list) {
935 if (cb->security_cfm)
936 cb->security_cfm(conn, status, encrypt);
938 read_unlock(&hci_cb_list_lock);
941 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
946 if (conn->sec_level == BT_SECURITY_SDP)
947 conn->sec_level = BT_SECURITY_LOW;
949 if (conn->pending_sec_level > conn->sec_level)
950 conn->sec_level = conn->pending_sec_level;
952 hci_proto_encrypt_cfm(conn, status, encrypt);
954 read_lock(&hci_cb_list_lock);
955 list_for_each_entry(cb, &hci_cb_list, list) {
956 if (cb->security_cfm)
957 cb->security_cfm(conn, status, encrypt);
959 read_unlock(&hci_cb_list_lock);
962 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
966 read_lock(&hci_cb_list_lock);
967 list_for_each_entry(cb, &hci_cb_list, list) {
968 if (cb->key_change_cfm)
969 cb->key_change_cfm(conn, status);
971 read_unlock(&hci_cb_list_lock);
974 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
979 read_lock(&hci_cb_list_lock);
980 list_for_each_entry(cb, &hci_cb_list, list) {
981 if (cb->role_switch_cfm)
982 cb->role_switch_cfm(conn, status, role);
984 read_unlock(&hci_cb_list_lock);
987 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
994 while (parsed < data_len - 1) {
995 u8 field_len = data[0];
1000 parsed += field_len + 1;
1002 if (parsed > data_len)
1005 if (data[1] == type)
1008 data += field_len + 1;
1014 int hci_register_cb(struct hci_cb *hcb);
1015 int hci_unregister_cb(struct hci_cb *hcb);
1017 struct hci_request {
1018 struct hci_dev *hdev;
1019 struct sk_buff_head cmd_q;
1021 /* If something goes wrong when building the HCI request, the error
1022 * value is stored in this field.
1027 void hci_req_init(struct hci_request *req, struct hci_dev *hdev);
1028 int hci_req_run(struct hci_request *req, hci_req_complete_t complete);
1029 void hci_req_add(struct hci_request *req, u16 opcode, u32 plen,
1031 void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen,
1032 const void *param, u8 event);
1033 void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
1035 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1036 const void *param, u32 timeout);
1037 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1038 const void *param, u8 event, u32 timeout);
1040 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1042 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1043 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1045 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1047 /* ----- HCI Sockets ----- */
1048 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1049 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1050 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1052 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1054 /* Management interface */
1055 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1056 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1057 BIT(BDADDR_LE_RANDOM))
1058 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1059 BIT(BDADDR_LE_PUBLIC) | \
1060 BIT(BDADDR_LE_RANDOM))
1062 /* These LE scan and inquiry parameters were chosen according to LE General
1063 * Discovery Procedure specification.
1065 #define DISCOV_LE_SCAN_WIN 0x12
1066 #define DISCOV_LE_SCAN_INT 0x12
1067 #define DISCOV_LE_TIMEOUT msecs_to_jiffies(10240)
1068 #define DISCOV_INTERLEAVED_TIMEOUT msecs_to_jiffies(5120)
1069 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1070 #define DISCOV_BREDR_INQUIRY_LEN 0x08
1072 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1073 void mgmt_index_added(struct hci_dev *hdev);
1074 void mgmt_index_removed(struct hci_dev *hdev);
1075 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1076 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1077 void mgmt_discoverable_timeout(struct hci_dev *hdev);
1078 void mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
1079 void mgmt_connectable(struct hci_dev *hdev, u8 connectable);
1080 void mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
1081 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1083 void mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1084 u8 addr_type, u32 flags, u8 *name, u8 name_len,
1086 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1087 u8 link_type, u8 addr_type, u8 reason);
1088 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1089 u8 link_type, u8 addr_type, u8 status);
1090 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1091 u8 addr_type, u8 status);
1092 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1093 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1095 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1097 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1098 u8 link_type, u8 addr_type, __le32 value,
1100 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1101 u8 link_type, u8 addr_type, u8 status);
1102 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1103 u8 link_type, u8 addr_type, u8 status);
1104 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1105 u8 link_type, u8 addr_type);
1106 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1107 u8 link_type, u8 addr_type, u8 status);
1108 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1109 u8 link_type, u8 addr_type, u8 status);
1110 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1111 u8 link_type, u8 addr_type, u32 passkey,
1113 void mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1114 u8 addr_type, u8 status);
1115 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1116 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1117 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1119 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1120 void mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
1121 u8 *randomizer, u8 status);
1122 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1123 u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1124 u8 ssp, u8 *eir, u16 eir_len);
1125 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1126 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1127 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1128 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1129 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1130 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
1131 void mgmt_reenable_advertising(struct hci_dev *hdev);
1133 /* HCI info for socket */
1134 #define hci_pi(sk) ((struct hci_pinfo *) sk)
1138 struct hci_dev *hdev;
1139 struct hci_filter filter;
1141 unsigned short channel;
1144 /* HCI security filter */
1145 #define HCI_SFLT_MAX_OGF 5
1147 struct hci_sec_filter {
1149 __u32 event_mask[2];
1150 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1153 /* ----- HCI requests ----- */
1154 #define HCI_REQ_DONE 0
1155 #define HCI_REQ_PEND 1
1156 #define HCI_REQ_CANCELED 2
1158 #define hci_req_lock(d) mutex_lock(&d->req_lock)
1159 #define hci_req_unlock(d) mutex_unlock(&d->req_lock)
1161 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1162 u16 latency, u16 to_multiplier);
1163 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1166 #define SCO_AIRMODE_MASK 0x0003
1167 #define SCO_AIRMODE_CVSD 0x0000
1168 #define SCO_AIRMODE_TRANSP 0x0003
1170 #endif /* __HCI_CORE_H */