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 struct le_scan_params {
127 #define HCI_MAX_SHORT_NAME_LENGTH 10
134 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
137 #define HCI_MAX_PAGES 3
139 #define NUM_REASSEMBLY 4
141 struct list_head list;
150 __u8 dev_name[HCI_MAX_NAME_LENGTH];
151 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
152 __u8 eir[HCI_MAX_EIR_LENGTH];
157 __u8 features[HCI_MAX_PAGES][8];
159 __u8 le_white_list_size;
170 __u16 page_scan_interval;
171 __u16 page_scan_window;
185 __u16 sniff_min_interval;
186 __u16 sniff_max_interval;
191 __u32 amp_min_latency;
195 __u16 amp_assoc_size;
196 __u32 amp_max_flush_to;
197 __u32 amp_be_flush_to;
199 struct amp_assoc loc_assoc;
203 unsigned int auto_accept_delay;
205 unsigned long quirks;
208 unsigned int acl_cnt;
209 unsigned int sco_cnt;
212 unsigned int acl_mtu;
213 unsigned int sco_mtu;
215 unsigned int acl_pkts;
216 unsigned int sco_pkts;
217 unsigned int le_pkts;
224 unsigned long acl_last_tx;
225 unsigned long sco_last_tx;
226 unsigned long le_last_tx;
228 struct workqueue_struct *workqueue;
229 struct workqueue_struct *req_workqueue;
231 struct work_struct power_on;
232 struct delayed_work power_off;
234 __u16 discov_timeout;
235 struct delayed_work discov_off;
237 struct delayed_work service_cache;
239 struct timer_list cmd_timer;
241 struct work_struct rx_work;
242 struct work_struct cmd_work;
243 struct work_struct tx_work;
245 struct sk_buff_head rx_q;
246 struct sk_buff_head raw_q;
247 struct sk_buff_head cmd_q;
249 struct sk_buff *recv_evt;
250 struct sk_buff *sent_cmd;
251 struct sk_buff *reassembly[NUM_REASSEMBLY];
253 struct mutex req_lock;
254 wait_queue_head_t req_wait_q;
258 struct list_head mgmt_pending;
260 struct discovery_state discovery;
261 struct hci_conn_hash conn_hash;
262 struct list_head blacklist;
264 struct list_head uuids;
266 struct list_head link_keys;
268 struct list_head long_term_keys;
270 struct list_head remote_oob_data;
272 struct hci_dev_stats stat;
276 struct dentry *debugfs;
280 struct rfkill *rfkill;
282 unsigned long dev_flags;
284 struct delayed_work le_scan_disable;
286 struct work_struct le_scan;
287 struct le_scan_params le_scan_params;
290 __u8 adv_data[HCI_MAX_AD_LENGTH];
293 int (*open)(struct hci_dev *hdev);
294 int (*close)(struct hci_dev *hdev);
295 int (*flush)(struct hci_dev *hdev);
296 int (*setup)(struct hci_dev *hdev);
297 int (*send)(struct sk_buff *skb);
298 void (*notify)(struct hci_dev *hdev, unsigned int evt);
299 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
302 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
305 struct list_head list;
318 __u8 features[HCI_MAX_PAGES][8];
326 __u8 pending_sec_level;
330 __u32 passkey_notify;
331 __u8 passkey_entered;
342 struct sk_buff_head data_q;
343 struct list_head chan_list;
345 struct delayed_work disc_work;
346 struct timer_list idle_timer;
347 struct timer_list auto_accept_timer;
351 struct hci_dev *hdev;
355 struct amp_mgr *amp_mgr;
357 struct hci_conn *link;
359 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
360 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
361 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
365 struct list_head list;
367 struct hci_conn *conn;
368 struct sk_buff_head data_q;
373 extern struct list_head hci_dev_list;
374 extern struct list_head hci_cb_list;
375 extern rwlock_t hci_dev_list_lock;
376 extern rwlock_t hci_cb_list_lock;
378 /* ----- HCI interface to upper protocols ----- */
379 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
380 extern void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
381 extern int l2cap_disconn_ind(struct hci_conn *hcon);
382 extern void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
383 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
384 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb,
387 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
388 extern void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
389 extern void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
390 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
392 /* ----- Inquiry cache ----- */
393 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
394 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
396 static inline void discovery_init(struct hci_dev *hdev)
398 hdev->discovery.state = DISCOVERY_STOPPED;
399 INIT_LIST_HEAD(&hdev->discovery.all);
400 INIT_LIST_HEAD(&hdev->discovery.unknown);
401 INIT_LIST_HEAD(&hdev->discovery.resolve);
404 bool hci_discovery_active(struct hci_dev *hdev);
406 void hci_discovery_set_state(struct hci_dev *hdev, int state);
408 static inline int inquiry_cache_empty(struct hci_dev *hdev)
410 return list_empty(&hdev->discovery.all);
413 static inline long inquiry_cache_age(struct hci_dev *hdev)
415 struct discovery_state *c = &hdev->discovery;
416 return jiffies - c->timestamp;
419 static inline long inquiry_entry_age(struct inquiry_entry *e)
421 return jiffies - e->timestamp;
424 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
426 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
428 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
431 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
432 struct inquiry_entry *ie);
433 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
434 bool name_known, bool *ssp);
436 /* ----- HCI Connections ----- */
439 HCI_CONN_REAUTH_PEND,
440 HCI_CONN_ENCRYPT_PEND,
441 HCI_CONN_RSWITCH_PEND,
442 HCI_CONN_MODE_CHANGE_PEND,
443 HCI_CONN_SCO_SETUP_PEND,
444 HCI_CONN_LE_SMP_PEND,
445 HCI_CONN_MGMT_CONNECTED,
446 HCI_CONN_SSP_ENABLED,
451 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
453 struct hci_dev *hdev = conn->hdev;
454 return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
455 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
458 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
460 struct hci_conn_hash *h = &hdev->conn_hash;
461 list_add_rcu(&c->list, &h->list);
479 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
481 struct hci_conn_hash *h = &hdev->conn_hash;
483 list_del_rcu(&c->list);
503 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
505 struct hci_conn_hash *h = &hdev->conn_hash;
521 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
524 struct hci_conn_hash *h = &hdev->conn_hash;
529 list_for_each_entry_rcu(c, &h->list, list) {
530 if (c->handle == handle) {
540 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
541 __u8 type, bdaddr_t *ba)
543 struct hci_conn_hash *h = &hdev->conn_hash;
548 list_for_each_entry_rcu(c, &h->list, list) {
549 if (c->type == type && !bacmp(&c->dst, ba)) {
560 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
561 __u8 type, __u16 state)
563 struct hci_conn_hash *h = &hdev->conn_hash;
568 list_for_each_entry_rcu(c, &h->list, list) {
569 if (c->type == type && c->state == state) {
580 void hci_disconnect(struct hci_conn *conn, __u8 reason);
581 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
582 void hci_sco_setup(struct hci_conn *conn, __u8 status);
584 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
585 int hci_conn_del(struct hci_conn *conn);
586 void hci_conn_hash_flush(struct hci_dev *hdev);
587 void hci_conn_check_pending(struct hci_dev *hdev);
589 struct hci_chan *hci_chan_create(struct hci_conn *conn);
590 void hci_chan_del(struct hci_chan *chan);
591 void hci_chan_list_flush(struct hci_conn *conn);
592 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
594 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
595 __u8 dst_type, __u8 sec_level, __u8 auth_type);
596 int hci_conn_check_link_mode(struct hci_conn *conn);
597 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
598 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
599 int hci_conn_change_link_key(struct hci_conn *conn);
600 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
602 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
605 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
606 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
607 * working or anything else. They just guarantee that the object is available
608 * and can be dereferenced. So you can use its locks, local variables and any
609 * other constant data.
610 * Before accessing runtime data, you _must_ lock the object and then check that
611 * it is still running. As soon as you release the locks, the connection might
612 * get dropped, though.
614 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
615 * how long the underlying connection is held. So every channel that runs on the
616 * hci_conn object calls this to prevent the connection from disappearing. As
617 * long as you hold a device, you must also guarantee that you have a valid
618 * reference to the device via hci_conn_get() (or the initial reference from
620 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
621 * break because nobody cares for that. But this means, we cannot use
622 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
625 static inline void hci_conn_get(struct hci_conn *conn)
627 get_device(&conn->dev);
630 static inline void hci_conn_put(struct hci_conn *conn)
632 put_device(&conn->dev);
635 static inline void hci_conn_hold(struct hci_conn *conn)
637 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
639 atomic_inc(&conn->refcnt);
640 cancel_delayed_work(&conn->disc_work);
643 static inline void hci_conn_drop(struct hci_conn *conn)
645 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
647 if (atomic_dec_and_test(&conn->refcnt)) {
650 switch (conn->type) {
653 del_timer(&conn->idle_timer);
654 if (conn->state == BT_CONNECTED) {
655 timeo = conn->disc_timeout;
659 timeo = msecs_to_jiffies(10);
664 timeo = conn->disc_timeout;
668 timeo = msecs_to_jiffies(10);
672 cancel_delayed_work(&conn->disc_work);
673 queue_delayed_work(conn->hdev->workqueue,
674 &conn->disc_work, timeo);
678 /* ----- HCI Devices ----- */
679 static inline void hci_dev_put(struct hci_dev *d)
681 BT_DBG("%s orig refcnt %d", d->name,
682 atomic_read(&d->dev.kobj.kref.refcount));
687 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
689 BT_DBG("%s orig refcnt %d", d->name,
690 atomic_read(&d->dev.kobj.kref.refcount));
696 #define hci_dev_lock(d) mutex_lock(&d->lock)
697 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
699 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
700 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
702 static inline void *hci_get_drvdata(struct hci_dev *hdev)
704 return dev_get_drvdata(&hdev->dev);
707 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
709 dev_set_drvdata(&hdev->dev, data);
712 /* hci_dev_list shall be locked */
713 static inline uint8_t __hci_num_ctrl(void)
718 list_for_each(p, &hci_dev_list) {
725 struct hci_dev *hci_dev_get(int index);
726 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
728 struct hci_dev *hci_alloc_dev(void);
729 void hci_free_dev(struct hci_dev *hdev);
730 int hci_register_dev(struct hci_dev *hdev);
731 void hci_unregister_dev(struct hci_dev *hdev);
732 int hci_suspend_dev(struct hci_dev *hdev);
733 int hci_resume_dev(struct hci_dev *hdev);
734 int hci_dev_open(__u16 dev);
735 int hci_dev_close(__u16 dev);
736 int hci_dev_reset(__u16 dev);
737 int hci_dev_reset_stat(__u16 dev);
738 int hci_dev_cmd(unsigned int cmd, void __user *arg);
739 int hci_get_dev_list(void __user *arg);
740 int hci_get_dev_info(void __user *arg);
741 int hci_get_conn_list(void __user *arg);
742 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
743 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
744 int hci_inquiry(void __user *arg);
746 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
748 int hci_blacklist_clear(struct hci_dev *hdev);
749 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
750 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
752 int hci_uuids_clear(struct hci_dev *hdev);
754 int hci_link_keys_clear(struct hci_dev *hdev);
755 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
756 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
757 bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
758 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
759 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
760 int new_key, u8 authenticated, u8 tk[16], u8 enc_size,
761 __le16 ediv, u8 rand[8]);
762 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
764 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
765 int hci_smp_ltks_clear(struct hci_dev *hdev);
766 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
768 int hci_remote_oob_data_clear(struct hci_dev *hdev);
769 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
771 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
773 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
775 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
777 int hci_recv_frame(struct sk_buff *skb);
778 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
779 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
781 void hci_init_sysfs(struct hci_dev *hdev);
782 int hci_add_sysfs(struct hci_dev *hdev);
783 void hci_del_sysfs(struct hci_dev *hdev);
784 void hci_conn_init_sysfs(struct hci_conn *conn);
785 void hci_conn_add_sysfs(struct hci_conn *conn);
786 void hci_conn_del_sysfs(struct hci_conn *conn);
788 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
790 /* ----- LMP capabilities ----- */
791 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
792 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
793 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
794 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
795 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
796 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
797 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
798 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
799 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
800 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
801 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
802 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
803 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
804 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
805 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
806 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
807 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
808 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
810 /* ----- Extended LMP capabilities ----- */
811 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
812 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
813 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
815 /* returns true if at least one AMP active */
816 static inline bool hci_amp_capable(void)
818 struct hci_dev *hdev;
821 read_lock(&hci_dev_list_lock);
822 list_for_each_entry(hdev, &hci_dev_list, list)
823 if (hdev->amp_type == HCI_AMP &&
824 test_bit(HCI_UP, &hdev->flags))
826 read_unlock(&hci_dev_list_lock);
831 /* ----- HCI protocols ----- */
832 #define HCI_PROTO_DEFER 0x01
834 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
835 __u8 type, __u8 *flags)
839 return l2cap_connect_ind(hdev, bdaddr);
843 return sco_connect_ind(hdev, bdaddr, flags);
846 BT_ERR("unknown link type %d", type);
851 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
853 switch (conn->type) {
856 l2cap_connect_cfm(conn, status);
861 sco_connect_cfm(conn, status);
865 BT_ERR("unknown link type %d", conn->type);
869 if (conn->connect_cfm_cb)
870 conn->connect_cfm_cb(conn, status);
873 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
875 if (conn->type != ACL_LINK && conn->type != LE_LINK)
876 return HCI_ERROR_REMOTE_USER_TERM;
878 return l2cap_disconn_ind(conn);
881 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
883 switch (conn->type) {
886 l2cap_disconn_cfm(conn, reason);
891 sco_disconn_cfm(conn, reason);
894 /* L2CAP would be handled for BREDR chan */
899 BT_ERR("unknown link type %d", conn->type);
903 if (conn->disconn_cfm_cb)
904 conn->disconn_cfm_cb(conn, reason);
907 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
911 if (conn->type != ACL_LINK && conn->type != LE_LINK)
914 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
917 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
918 l2cap_security_cfm(conn, status, encrypt);
920 if (conn->security_cfm_cb)
921 conn->security_cfm_cb(conn, status);
924 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
927 if (conn->type != ACL_LINK && conn->type != LE_LINK)
930 l2cap_security_cfm(conn, status, encrypt);
932 if (conn->security_cfm_cb)
933 conn->security_cfm_cb(conn, status);
936 /* ----- HCI callbacks ----- */
938 struct list_head list;
942 void (*security_cfm) (struct hci_conn *conn, __u8 status,
944 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
945 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
948 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
953 hci_proto_auth_cfm(conn, status);
955 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
958 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
960 read_lock(&hci_cb_list_lock);
961 list_for_each_entry(cb, &hci_cb_list, list) {
962 if (cb->security_cfm)
963 cb->security_cfm(conn, status, encrypt);
965 read_unlock(&hci_cb_list_lock);
968 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
973 if (conn->sec_level == BT_SECURITY_SDP)
974 conn->sec_level = BT_SECURITY_LOW;
976 if (conn->pending_sec_level > conn->sec_level)
977 conn->sec_level = conn->pending_sec_level;
979 hci_proto_encrypt_cfm(conn, status, encrypt);
981 read_lock(&hci_cb_list_lock);
982 list_for_each_entry(cb, &hci_cb_list, list) {
983 if (cb->security_cfm)
984 cb->security_cfm(conn, status, encrypt);
986 read_unlock(&hci_cb_list_lock);
989 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
993 read_lock(&hci_cb_list_lock);
994 list_for_each_entry(cb, &hci_cb_list, list) {
995 if (cb->key_change_cfm)
996 cb->key_change_cfm(conn, status);
998 read_unlock(&hci_cb_list_lock);
1001 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1006 read_lock(&hci_cb_list_lock);
1007 list_for_each_entry(cb, &hci_cb_list, list) {
1008 if (cb->role_switch_cfm)
1009 cb->role_switch_cfm(conn, status, role);
1011 read_unlock(&hci_cb_list_lock);
1014 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
1021 while (parsed < data_len - 1) {
1022 u8 field_len = data[0];
1027 parsed += field_len + 1;
1029 if (parsed > data_len)
1032 if (data[1] == type)
1035 data += field_len + 1;
1041 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
1045 while (parsed < eir_len) {
1046 u8 field_len = eir[0];
1051 parsed += field_len + 1;
1052 eir += field_len + 1;
1058 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
1061 eir[eir_len++] = sizeof(type) + data_len;
1062 eir[eir_len++] = type;
1063 memcpy(&eir[eir_len], data, data_len);
1064 eir_len += data_len;
1069 int hci_register_cb(struct hci_cb *hcb);
1070 int hci_unregister_cb(struct hci_cb *hcb);
1072 struct hci_request {
1073 struct hci_dev *hdev;
1074 struct sk_buff_head cmd_q;
1076 /* If something goes wrong when building the HCI request, the error
1077 * value is stored in this field.
1082 void hci_req_init(struct hci_request *req, struct hci_dev *hdev);
1083 int hci_req_run(struct hci_request *req, hci_req_complete_t complete);
1084 void hci_req_add(struct hci_request *req, u16 opcode, u32 plen,
1086 void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen,
1087 const void *param, u8 event);
1088 void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
1090 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1091 const void *param, u32 timeout);
1092 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1093 const void *param, u8 event, u32 timeout);
1095 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1097 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1098 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1100 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1102 /* ----- HCI Sockets ----- */
1103 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1104 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1105 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1107 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1109 /* Management interface */
1110 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1111 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1112 BIT(BDADDR_LE_RANDOM))
1113 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1114 BIT(BDADDR_LE_PUBLIC) | \
1115 BIT(BDADDR_LE_RANDOM))
1117 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1118 int mgmt_index_added(struct hci_dev *hdev);
1119 int mgmt_index_removed(struct hci_dev *hdev);
1120 int mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1121 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1122 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
1123 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
1124 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
1125 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1127 int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1128 u8 addr_type, u32 flags, u8 *name, u8 name_len,
1130 int mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1131 u8 link_type, u8 addr_type, u8 reason);
1132 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1133 u8 link_type, u8 addr_type, u8 status);
1134 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1135 u8 addr_type, u8 status);
1136 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1137 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1139 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1141 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1142 u8 link_type, u8 addr_type, __le32 value,
1144 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1145 u8 link_type, u8 addr_type, u8 status);
1146 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1147 u8 link_type, u8 addr_type, u8 status);
1148 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1149 u8 link_type, u8 addr_type);
1150 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1151 u8 link_type, u8 addr_type, u8 status);
1152 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1153 u8 link_type, u8 addr_type, u8 status);
1154 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1155 u8 link_type, u8 addr_type, u32 passkey,
1157 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1158 u8 addr_type, u8 status);
1159 int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1160 int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1161 int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1163 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1164 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
1165 u8 *randomizer, u8 status);
1166 int mgmt_le_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1167 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1168 u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1169 u8 ssp, u8 *eir, u16 eir_len);
1170 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1171 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1172 int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status);
1173 int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status);
1174 int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1175 int mgmt_interleaved_discovery(struct hci_dev *hdev);
1176 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1177 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1178 bool mgmt_valid_hdev(struct hci_dev *hdev);
1179 int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
1181 /* HCI info for socket */
1182 #define hci_pi(sk) ((struct hci_pinfo *) sk)
1186 struct hci_dev *hdev;
1187 struct hci_filter filter;
1189 unsigned short channel;
1192 /* HCI security filter */
1193 #define HCI_SFLT_MAX_OGF 5
1195 struct hci_sec_filter {
1197 __u32 event_mask[2];
1198 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1201 /* ----- HCI requests ----- */
1202 #define HCI_REQ_DONE 0
1203 #define HCI_REQ_PEND 1
1204 #define HCI_REQ_CANCELED 2
1206 #define hci_req_lock(d) mutex_lock(&d->req_lock)
1207 #define hci_req_unlock(d) mutex_unlock(&d->req_lock)
1209 void hci_update_ad(struct hci_request *req);
1211 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1212 u16 latency, u16 to_multiplier);
1213 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1215 int hci_do_inquiry(struct hci_dev *hdev, u8 length);
1216 int hci_cancel_inquiry(struct hci_dev *hdev);
1217 int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window,
1219 int hci_cancel_le_scan(struct hci_dev *hdev);
1221 u8 bdaddr_to_le(u8 bdaddr_type);
1223 #endif /* __HCI_CORE_H */