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;
84 struct hci_conn_hash {
85 struct list_head list;
90 unsigned int le_num_slave;
94 struct list_head list;
100 struct list_head list;
114 struct list_head list;
127 struct list_head list;
136 struct list_head list;
140 u8 val[HCI_LINK_KEY_SIZE];
145 struct list_head list;
154 #define HCI_MAX_SHORT_NAME_LENGTH 10
156 /* Default LE RPA expiry time, 15 minutes */
157 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
159 /* Default min/max age of connection information (1s/3s) */
160 #define DEFAULT_CONN_INFO_MIN_AGE 1000
161 #define DEFAULT_CONN_INFO_MAX_AGE 3000
168 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
171 #define HCI_MAX_PAGES 3
173 #define NUM_REASSEMBLY 4
175 struct list_head list;
185 bdaddr_t public_addr;
186 bdaddr_t random_addr;
187 bdaddr_t static_addr;
189 __u8 dev_name[HCI_MAX_NAME_LENGTH];
190 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
191 __u8 eir[HCI_MAX_EIR_LENGTH];
196 __u8 features[HCI_MAX_PAGES][8];
198 __u8 le_white_list_size;
208 __u8 stored_max_keys;
209 __u8 stored_num_keys;
212 __u16 page_scan_interval;
213 __u16 page_scan_window;
215 __u8 le_adv_channel_map;
216 __u16 le_adv_min_interval;
217 __u16 le_adv_max_interval;
219 __u16 le_scan_interval;
220 __u16 le_scan_window;
221 __u16 le_conn_min_interval;
222 __u16 le_conn_max_interval;
223 __u16 le_conn_latency;
224 __u16 le_supv_timeout;
226 __u16 le_def_tx_time;
228 __u16 le_max_tx_time;
230 __u16 le_max_rx_time;
231 __u16 discov_interleaved_timeout;
232 __u16 conn_info_min_age;
233 __u16 conn_info_max_age;
248 __u16 sniff_min_interval;
249 __u16 sniff_max_interval;
254 __u32 amp_min_latency;
258 __u16 amp_assoc_size;
259 __u32 amp_max_flush_to;
260 __u32 amp_be_flush_to;
262 struct amp_assoc loc_assoc;
266 unsigned int auto_accept_delay;
268 unsigned long quirks;
271 unsigned int acl_cnt;
272 unsigned int sco_cnt;
275 unsigned int acl_mtu;
276 unsigned int sco_mtu;
278 unsigned int acl_pkts;
279 unsigned int sco_pkts;
280 unsigned int le_pkts;
287 unsigned long acl_last_tx;
288 unsigned long sco_last_tx;
289 unsigned long le_last_tx;
291 struct workqueue_struct *workqueue;
292 struct workqueue_struct *req_workqueue;
294 struct work_struct power_on;
295 struct delayed_work power_off;
297 __u16 discov_timeout;
298 struct delayed_work discov_off;
300 struct delayed_work service_cache;
302 struct delayed_work cmd_timer;
304 struct work_struct rx_work;
305 struct work_struct cmd_work;
306 struct work_struct tx_work;
308 struct sk_buff_head rx_q;
309 struct sk_buff_head raw_q;
310 struct sk_buff_head cmd_q;
312 struct sk_buff *recv_evt;
313 struct sk_buff *sent_cmd;
314 struct sk_buff *reassembly[NUM_REASSEMBLY];
316 struct mutex req_lock;
317 wait_queue_head_t req_wait_q;
322 void *smp_bredr_data;
324 struct discovery_state discovery;
325 struct hci_conn_hash conn_hash;
327 struct list_head mgmt_pending;
328 struct list_head blacklist;
329 struct list_head whitelist;
330 struct list_head uuids;
331 struct list_head link_keys;
332 struct list_head long_term_keys;
333 struct list_head identity_resolving_keys;
334 struct list_head remote_oob_data;
335 struct list_head le_white_list;
336 struct list_head le_conn_params;
337 struct list_head pend_le_conns;
338 struct list_head pend_le_reports;
340 struct hci_dev_stats stat;
344 struct dentry *debugfs;
348 struct rfkill *rfkill;
350 unsigned long dbg_flags;
351 unsigned long dev_flags;
353 struct delayed_work le_scan_disable;
356 __u8 adv_data[HCI_MAX_AD_LENGTH];
358 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
359 __u8 scan_rsp_data_len;
363 struct delayed_work rpa_expired;
366 int (*open)(struct hci_dev *hdev);
367 int (*close)(struct hci_dev *hdev);
368 int (*flush)(struct hci_dev *hdev);
369 int (*setup)(struct hci_dev *hdev);
370 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
371 void (*notify)(struct hci_dev *hdev, unsigned int evt);
372 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
375 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
378 struct list_head list;
398 __u8 features[HCI_MAX_PAGES][8];
404 __u8 pending_sec_level;
408 __u32 passkey_notify;
409 __u8 passkey_entered;
413 __u16 le_conn_min_interval;
414 __u16 le_conn_max_interval;
415 __u16 le_conn_interval;
416 __u16 le_conn_latency;
417 __u16 le_supv_timeout;
418 __u8 le_adv_data[HCI_MAX_AD_LENGTH];
419 __u8 le_adv_data_len;
426 __u16 clock_accuracy;
428 unsigned long conn_info_timestamp;
436 struct sk_buff_head data_q;
437 struct list_head chan_list;
439 struct delayed_work disc_work;
440 struct delayed_work auto_accept_work;
441 struct delayed_work idle_work;
442 struct delayed_work le_conn_timeout;
445 struct dentry *debugfs;
447 struct hci_dev *hdev;
450 struct amp_mgr *amp_mgr;
452 struct hci_conn *link;
454 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
455 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
456 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
460 struct list_head list;
462 struct hci_conn *conn;
463 struct sk_buff_head data_q;
468 struct hci_conn_params {
469 struct list_head list;
470 struct list_head action;
475 u16 conn_min_interval;
476 u16 conn_max_interval;
478 u16 supervision_timeout;
481 HCI_AUTO_CONN_DISABLED,
482 HCI_AUTO_CONN_REPORT,
483 HCI_AUTO_CONN_DIRECT,
484 HCI_AUTO_CONN_ALWAYS,
485 HCI_AUTO_CONN_LINK_LOSS,
488 struct hci_conn *conn;
491 extern struct list_head hci_dev_list;
492 extern struct list_head hci_cb_list;
493 extern rwlock_t hci_dev_list_lock;
494 extern rwlock_t hci_cb_list_lock;
496 /* ----- HCI interface to upper protocols ----- */
497 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
498 void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
499 int l2cap_disconn_ind(struct hci_conn *hcon);
500 void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
501 int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
502 int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
504 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
505 void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
506 void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
507 int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
509 /* ----- Inquiry cache ----- */
510 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
511 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
513 static inline void discovery_init(struct hci_dev *hdev)
515 hdev->discovery.state = DISCOVERY_STOPPED;
516 INIT_LIST_HEAD(&hdev->discovery.all);
517 INIT_LIST_HEAD(&hdev->discovery.unknown);
518 INIT_LIST_HEAD(&hdev->discovery.resolve);
519 hdev->discovery.report_invalid_rssi = true;
520 hdev->discovery.rssi = HCI_RSSI_INVALID;
523 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
525 hdev->discovery.report_invalid_rssi = true;
526 hdev->discovery.rssi = HCI_RSSI_INVALID;
527 hdev->discovery.uuid_count = 0;
528 kfree(hdev->discovery.uuids);
529 hdev->discovery.uuids = NULL;
532 bool hci_discovery_active(struct hci_dev *hdev);
534 void hci_discovery_set_state(struct hci_dev *hdev, int state);
536 static inline int inquiry_cache_empty(struct hci_dev *hdev)
538 return list_empty(&hdev->discovery.all);
541 static inline long inquiry_cache_age(struct hci_dev *hdev)
543 struct discovery_state *c = &hdev->discovery;
544 return jiffies - c->timestamp;
547 static inline long inquiry_entry_age(struct inquiry_entry *e)
549 return jiffies - e->timestamp;
552 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
554 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
556 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
559 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
560 struct inquiry_entry *ie);
561 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
563 void hci_inquiry_cache_flush(struct hci_dev *hdev);
565 /* ----- HCI Connections ----- */
568 HCI_CONN_REAUTH_PEND,
569 HCI_CONN_ENCRYPT_PEND,
570 HCI_CONN_RSWITCH_PEND,
571 HCI_CONN_MODE_CHANGE_PEND,
572 HCI_CONN_SCO_SETUP_PEND,
573 HCI_CONN_MGMT_CONNECTED,
574 HCI_CONN_SSP_ENABLED,
584 HCI_CONN_STK_ENCRYPT,
585 HCI_CONN_AUTH_INITIATOR,
587 HCI_CONN_PARAM_REMOVAL_PEND,
588 HCI_CONN_NEW_LINK_KEY,
591 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
593 struct hci_dev *hdev = conn->hdev;
594 return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
595 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
598 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
600 struct hci_dev *hdev = conn->hdev;
601 return test_bit(HCI_SC_ENABLED, &hdev->dev_flags) &&
602 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
605 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
607 struct hci_conn_hash *h = &hdev->conn_hash;
608 list_add_rcu(&c->list, &h->list);
618 if (c->role == HCI_ROLE_SLAVE)
628 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
630 struct hci_conn_hash *h = &hdev->conn_hash;
632 list_del_rcu(&c->list);
644 if (c->role == HCI_ROLE_SLAVE)
654 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
656 struct hci_conn_hash *h = &hdev->conn_hash;
672 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
674 struct hci_conn_hash *c = &hdev->conn_hash;
676 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
679 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
681 struct hci_conn_hash *h = &hdev->conn_hash;
683 __u8 type = INVALID_LINK;
687 list_for_each_entry_rcu(c, &h->list, list) {
688 if (c->handle == handle) {
699 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
702 struct hci_conn_hash *h = &hdev->conn_hash;
707 list_for_each_entry_rcu(c, &h->list, list) {
708 if (c->handle == handle) {
718 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
719 __u8 type, bdaddr_t *ba)
721 struct hci_conn_hash *h = &hdev->conn_hash;
726 list_for_each_entry_rcu(c, &h->list, list) {
727 if (c->type == type && !bacmp(&c->dst, ba)) {
738 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
739 __u8 type, __u16 state)
741 struct hci_conn_hash *h = &hdev->conn_hash;
746 list_for_each_entry_rcu(c, &h->list, list) {
747 if (c->type == type && c->state == state) {
758 int hci_disconnect(struct hci_conn *conn, __u8 reason);
759 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
760 void hci_sco_setup(struct hci_conn *conn, __u8 status);
762 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
764 int hci_conn_del(struct hci_conn *conn);
765 void hci_conn_hash_flush(struct hci_dev *hdev);
766 void hci_conn_check_pending(struct hci_dev *hdev);
768 struct hci_chan *hci_chan_create(struct hci_conn *conn);
769 void hci_chan_del(struct hci_chan *chan);
770 void hci_chan_list_flush(struct hci_conn *conn);
771 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
773 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
774 u8 dst_type, u8 sec_level, u16 conn_timeout,
776 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
777 u8 sec_level, u8 auth_type);
778 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
780 int hci_conn_check_link_mode(struct hci_conn *conn);
781 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
782 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
784 int hci_conn_change_link_key(struct hci_conn *conn);
785 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
787 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
789 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
792 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
793 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
794 * working or anything else. They just guarantee that the object is available
795 * and can be dereferenced. So you can use its locks, local variables and any
796 * other constant data.
797 * Before accessing runtime data, you _must_ lock the object and then check that
798 * it is still running. As soon as you release the locks, the connection might
799 * get dropped, though.
801 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
802 * how long the underlying connection is held. So every channel that runs on the
803 * hci_conn object calls this to prevent the connection from disappearing. As
804 * long as you hold a device, you must also guarantee that you have a valid
805 * reference to the device via hci_conn_get() (or the initial reference from
807 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
808 * break because nobody cares for that. But this means, we cannot use
809 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
812 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
814 get_device(&conn->dev);
818 static inline void hci_conn_put(struct hci_conn *conn)
820 put_device(&conn->dev);
823 static inline void hci_conn_hold(struct hci_conn *conn)
825 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
827 atomic_inc(&conn->refcnt);
828 cancel_delayed_work(&conn->disc_work);
831 static inline void hci_conn_drop(struct hci_conn *conn)
833 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
835 if (atomic_dec_and_test(&conn->refcnt)) {
838 switch (conn->type) {
841 cancel_delayed_work(&conn->idle_work);
842 if (conn->state == BT_CONNECTED) {
843 timeo = conn->disc_timeout;
852 timeo = conn->disc_timeout;
860 cancel_delayed_work(&conn->disc_work);
861 queue_delayed_work(conn->hdev->workqueue,
862 &conn->disc_work, timeo);
866 /* ----- HCI Devices ----- */
867 static inline void hci_dev_put(struct hci_dev *d)
869 BT_DBG("%s orig refcnt %d", d->name,
870 atomic_read(&d->dev.kobj.kref.refcount));
875 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
877 BT_DBG("%s orig refcnt %d", d->name,
878 atomic_read(&d->dev.kobj.kref.refcount));
884 #define hci_dev_lock(d) mutex_lock(&d->lock)
885 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
887 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
888 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
890 static inline void *hci_get_drvdata(struct hci_dev *hdev)
892 return dev_get_drvdata(&hdev->dev);
895 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
897 dev_set_drvdata(&hdev->dev, data);
900 struct hci_dev *hci_dev_get(int index);
901 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
903 struct hci_dev *hci_alloc_dev(void);
904 void hci_free_dev(struct hci_dev *hdev);
905 int hci_register_dev(struct hci_dev *hdev);
906 void hci_unregister_dev(struct hci_dev *hdev);
907 int hci_suspend_dev(struct hci_dev *hdev);
908 int hci_resume_dev(struct hci_dev *hdev);
909 int hci_reset_dev(struct hci_dev *hdev);
910 int hci_dev_open(__u16 dev);
911 int hci_dev_close(__u16 dev);
912 int hci_dev_reset(__u16 dev);
913 int hci_dev_reset_stat(__u16 dev);
914 int hci_dev_cmd(unsigned int cmd, void __user *arg);
915 int hci_get_dev_list(void __user *arg);
916 int hci_get_dev_info(void __user *arg);
917 int hci_get_conn_list(void __user *arg);
918 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
919 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
920 int hci_inquiry(void __user *arg);
922 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
923 bdaddr_t *bdaddr, u8 type);
924 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
925 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
926 void hci_bdaddr_list_clear(struct list_head *list);
928 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
929 bdaddr_t *addr, u8 addr_type);
930 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
931 bdaddr_t *addr, u8 addr_type);
932 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
933 void hci_conn_params_clear_all(struct hci_dev *hdev);
934 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
936 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
940 void hci_uuids_clear(struct hci_dev *hdev);
942 void hci_link_keys_clear(struct hci_dev *hdev);
943 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
944 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
945 bdaddr_t *bdaddr, u8 *val, u8 type,
946 u8 pin_len, bool *persistent);
947 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
948 u8 addr_type, u8 type, u8 authenticated,
949 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
950 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
951 u8 addr_type, u8 role);
952 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
953 void hci_smp_ltks_clear(struct hci_dev *hdev);
954 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
956 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
957 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
959 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
960 u8 addr_type, u8 val[16], bdaddr_t *rpa);
961 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
962 void hci_smp_irks_clear(struct hci_dev *hdev);
964 void hci_remote_oob_data_clear(struct hci_dev *hdev);
965 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
966 bdaddr_t *bdaddr, u8 bdaddr_type);
967 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
968 u8 bdaddr_type, u8 *hash192, u8 *rand192,
969 u8 *hash256, u8 *rand256);
970 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
973 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
975 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
976 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
978 void hci_init_sysfs(struct hci_dev *hdev);
979 void hci_conn_init_sysfs(struct hci_conn *conn);
980 void hci_conn_add_sysfs(struct hci_conn *conn);
981 void hci_conn_del_sysfs(struct hci_conn *conn);
983 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
985 /* ----- LMP capabilities ----- */
986 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
987 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
988 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
989 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
990 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
991 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
992 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
993 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
994 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
995 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
996 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
997 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
998 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
999 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1000 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
1001 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
1002 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1003 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
1004 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
1006 /* ----- Extended LMP capabilities ----- */
1007 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1008 #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
1009 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1010 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
1011 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
1012 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
1014 /* ----- Host capabilities ----- */
1015 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
1016 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
1017 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
1018 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1020 #define hdev_is_powered(hdev) (test_bit(HCI_UP, &hdev->flags) && \
1021 !test_bit(HCI_AUTO_OFF, &hdev->dev_flags))
1022 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1023 test_bit(HCI_SC_ENABLED, &(dev)->dev_flags))
1025 /* ----- HCI protocols ----- */
1026 #define HCI_PROTO_DEFER 0x01
1028 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1029 __u8 type, __u8 *flags)
1033 return l2cap_connect_ind(hdev, bdaddr);
1037 return sco_connect_ind(hdev, bdaddr, flags);
1040 BT_ERR("unknown link type %d", type);
1045 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
1047 switch (conn->type) {
1050 l2cap_connect_cfm(conn, status);
1055 sco_connect_cfm(conn, status);
1059 BT_ERR("unknown link type %d", conn->type);
1063 if (conn->connect_cfm_cb)
1064 conn->connect_cfm_cb(conn, status);
1067 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1069 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1070 return HCI_ERROR_REMOTE_USER_TERM;
1072 return l2cap_disconn_ind(conn);
1075 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
1077 switch (conn->type) {
1080 l2cap_disconn_cfm(conn, reason);
1085 sco_disconn_cfm(conn, reason);
1088 /* L2CAP would be handled for BREDR chan */
1093 BT_ERR("unknown link type %d", conn->type);
1097 if (conn->disconn_cfm_cb)
1098 conn->disconn_cfm_cb(conn, reason);
1101 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
1105 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1108 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1111 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1112 l2cap_security_cfm(conn, status, encrypt);
1114 if (conn->security_cfm_cb)
1115 conn->security_cfm_cb(conn, status);
1118 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
1121 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1124 l2cap_security_cfm(conn, status, encrypt);
1126 if (conn->security_cfm_cb)
1127 conn->security_cfm_cb(conn, status);
1130 /* ----- HCI callbacks ----- */
1132 struct list_head list;
1136 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1138 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1139 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1142 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1147 hci_proto_auth_cfm(conn, status);
1149 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1152 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1154 read_lock(&hci_cb_list_lock);
1155 list_for_each_entry(cb, &hci_cb_list, list) {
1156 if (cb->security_cfm)
1157 cb->security_cfm(conn, status, encrypt);
1159 read_unlock(&hci_cb_list_lock);
1162 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1167 if (conn->sec_level == BT_SECURITY_SDP)
1168 conn->sec_level = BT_SECURITY_LOW;
1170 if (conn->pending_sec_level > conn->sec_level)
1171 conn->sec_level = conn->pending_sec_level;
1173 hci_proto_encrypt_cfm(conn, status, encrypt);
1175 read_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 read_unlock(&hci_cb_list_lock);
1183 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1187 read_lock(&hci_cb_list_lock);
1188 list_for_each_entry(cb, &hci_cb_list, list) {
1189 if (cb->key_change_cfm)
1190 cb->key_change_cfm(conn, status);
1192 read_unlock(&hci_cb_list_lock);
1195 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1200 read_lock(&hci_cb_list_lock);
1201 list_for_each_entry(cb, &hci_cb_list, list) {
1202 if (cb->role_switch_cfm)
1203 cb->role_switch_cfm(conn, status, role);
1205 read_unlock(&hci_cb_list_lock);
1208 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
1215 while (parsed < data_len - 1) {
1216 u8 field_len = data[0];
1221 parsed += field_len + 1;
1223 if (parsed > data_len)
1226 if (data[1] == type)
1229 data += field_len + 1;
1235 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1237 if (addr_type != ADDR_LE_DEV_RANDOM)
1240 if ((bdaddr->b[5] & 0xc0) == 0x40)
1246 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1248 if (addr_type == ADDR_LE_DEV_PUBLIC)
1251 /* Check for Random Static address type */
1252 if ((addr->b[5] & 0xc0) == 0xc0)
1258 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1259 bdaddr_t *bdaddr, u8 addr_type)
1261 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1264 return hci_find_irk_by_rpa(hdev, bdaddr);
1267 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1272 if (min > max || min < 6 || max > 3200)
1275 if (to_multiplier < 10 || to_multiplier > 3200)
1278 if (max >= to_multiplier * 8)
1281 max_latency = (to_multiplier * 8 / max) - 1;
1282 if (latency > 499 || latency > max_latency)
1288 int hci_register_cb(struct hci_cb *hcb);
1289 int hci_unregister_cb(struct hci_cb *hcb);
1291 bool hci_req_pending(struct hci_dev *hdev);
1293 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1294 const void *param, u32 timeout);
1295 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1296 const void *param, u8 event, u32 timeout);
1298 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1300 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1301 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1303 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1305 /* ----- HCI Sockets ----- */
1306 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1307 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1308 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1310 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1312 /* Management interface */
1313 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1314 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1315 BIT(BDADDR_LE_RANDOM))
1316 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1317 BIT(BDADDR_LE_PUBLIC) | \
1318 BIT(BDADDR_LE_RANDOM))
1320 /* These LE scan and inquiry parameters were chosen according to LE General
1321 * Discovery Procedure specification.
1323 #define DISCOV_LE_SCAN_WIN 0x12
1324 #define DISCOV_LE_SCAN_INT 0x12
1325 #define DISCOV_LE_TIMEOUT 10240 /* msec */
1326 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1327 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1328 #define DISCOV_BREDR_INQUIRY_LEN 0x08
1330 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1331 int mgmt_new_settings(struct hci_dev *hdev);
1332 void mgmt_index_added(struct hci_dev *hdev);
1333 void mgmt_index_removed(struct hci_dev *hdev);
1334 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1335 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1336 int mgmt_update_adv_data(struct hci_dev *hdev);
1337 void mgmt_discoverable_timeout(struct hci_dev *hdev);
1338 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1340 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1341 u32 flags, u8 *name, u8 name_len);
1342 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1343 u8 link_type, u8 addr_type, u8 reason,
1344 bool mgmt_connected);
1345 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1346 u8 link_type, u8 addr_type, u8 status);
1347 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1348 u8 addr_type, u8 status);
1349 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1350 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1352 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1354 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1355 u8 link_type, u8 addr_type, u32 value,
1357 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1358 u8 link_type, u8 addr_type, u8 status);
1359 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1360 u8 link_type, u8 addr_type, u8 status);
1361 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1362 u8 link_type, u8 addr_type);
1363 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1364 u8 link_type, u8 addr_type, u8 status);
1365 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1366 u8 link_type, u8 addr_type, u8 status);
1367 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1368 u8 link_type, u8 addr_type, u32 passkey,
1370 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1371 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1372 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1373 void mgmt_sc_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1374 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1376 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1377 void mgmt_read_local_oob_data_complete(struct hci_dev *hdev, u8 *hash192,
1378 u8 *rand192, u8 *hash256, u8 *rand256,
1380 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1381 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1382 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1383 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1384 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1385 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1386 bool mgmt_powering_down(struct hci_dev *hdev);
1387 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1388 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk);
1389 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1391 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1392 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1393 u16 max_interval, u16 latency, u16 timeout);
1394 void mgmt_reenable_advertising(struct hci_dev *hdev);
1395 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1397 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1399 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1402 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1405 #define SCO_AIRMODE_MASK 0x0003
1406 #define SCO_AIRMODE_CVSD 0x0000
1407 #define SCO_AIRMODE_TRANSP 0x0003
1409 #endif /* __HCI_CORE_H */