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 */
71 bdaddr_t last_adv_addr;
72 u8 last_adv_addr_type;
75 u8 last_adv_data[HCI_MAX_AD_LENGTH];
79 struct hci_conn_hash {
80 struct list_head list;
88 struct list_head list;
94 struct list_head list;
108 struct list_head list;
120 struct list_head list;
128 struct list_head list;
131 u8 val[HCI_LINK_KEY_SIZE];
136 struct list_head list;
139 u8 randomizer192[16];
141 u8 randomizer256[16];
144 #define HCI_MAX_SHORT_NAME_LENGTH 10
146 /* Default LE RPA expiry time, 15 minutes */
147 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
149 /* Default min/max age of connection information (1s/3s) */
150 #define DEFAULT_CONN_INFO_MIN_AGE 1000
151 #define DEFAULT_CONN_INFO_MAX_AGE 3000
158 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
161 #define HCI_MAX_PAGES 3
163 #define NUM_REASSEMBLY 4
165 struct list_head list;
175 bdaddr_t public_addr;
176 bdaddr_t random_addr;
177 bdaddr_t static_addr;
179 __u8 dev_name[HCI_MAX_NAME_LENGTH];
180 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
181 __u8 eir[HCI_MAX_EIR_LENGTH];
186 __u8 features[HCI_MAX_PAGES][8];
188 __u8 le_white_list_size;
200 __u16 page_scan_interval;
201 __u16 page_scan_window;
203 __u8 le_adv_channel_map;
205 __u16 le_scan_interval;
206 __u16 le_scan_window;
207 __u16 le_conn_min_interval;
208 __u16 le_conn_max_interval;
209 __u16 le_conn_latency;
210 __u16 le_supv_timeout;
211 __u16 discov_interleaved_timeout;
212 __u16 conn_info_min_age;
213 __u16 conn_info_max_age;
228 __u16 sniff_min_interval;
229 __u16 sniff_max_interval;
234 __u32 amp_min_latency;
238 __u16 amp_assoc_size;
239 __u32 amp_max_flush_to;
240 __u32 amp_be_flush_to;
242 struct amp_assoc loc_assoc;
246 unsigned int auto_accept_delay;
248 unsigned long quirks;
251 unsigned int acl_cnt;
252 unsigned int sco_cnt;
255 unsigned int acl_mtu;
256 unsigned int sco_mtu;
258 unsigned int acl_pkts;
259 unsigned int sco_pkts;
260 unsigned int le_pkts;
267 unsigned long acl_last_tx;
268 unsigned long sco_last_tx;
269 unsigned long le_last_tx;
271 struct workqueue_struct *workqueue;
272 struct workqueue_struct *req_workqueue;
274 struct work_struct power_on;
275 struct delayed_work power_off;
277 __u16 discov_timeout;
278 struct delayed_work discov_off;
280 struct delayed_work service_cache;
282 struct delayed_work cmd_timer;
284 struct work_struct rx_work;
285 struct work_struct cmd_work;
286 struct work_struct tx_work;
288 struct sk_buff_head rx_q;
289 struct sk_buff_head raw_q;
290 struct sk_buff_head cmd_q;
292 struct sk_buff *recv_evt;
293 struct sk_buff *sent_cmd;
294 struct sk_buff *reassembly[NUM_REASSEMBLY];
296 struct mutex req_lock;
297 wait_queue_head_t req_wait_q;
301 struct crypto_blkcipher *tfm_aes;
303 struct discovery_state discovery;
304 struct hci_conn_hash conn_hash;
306 struct list_head mgmt_pending;
307 struct list_head blacklist;
308 struct list_head whitelist;
309 struct list_head uuids;
310 struct list_head link_keys;
311 struct list_head long_term_keys;
312 struct list_head identity_resolving_keys;
313 struct list_head remote_oob_data;
314 struct list_head le_white_list;
315 struct list_head le_conn_params;
316 struct list_head pend_le_conns;
317 struct list_head pend_le_reports;
319 struct hci_dev_stats stat;
323 struct dentry *debugfs;
327 struct rfkill *rfkill;
329 unsigned long dbg_flags;
330 unsigned long dev_flags;
332 struct delayed_work le_scan_disable;
335 __u8 adv_data[HCI_MAX_AD_LENGTH];
337 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
338 __u8 scan_rsp_data_len;
342 struct delayed_work rpa_expired;
345 int (*open)(struct hci_dev *hdev);
346 int (*close)(struct hci_dev *hdev);
347 int (*flush)(struct hci_dev *hdev);
348 int (*setup)(struct hci_dev *hdev);
349 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
350 void (*notify)(struct hci_dev *hdev, unsigned int evt);
351 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
354 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
357 struct list_head list;
376 __u8 features[HCI_MAX_PAGES][8];
382 __u8 pending_sec_level;
386 __u32 passkey_notify;
387 __u8 passkey_entered;
391 __u16 le_conn_min_interval;
392 __u16 le_conn_max_interval;
393 __u16 le_conn_interval;
394 __u16 le_conn_latency;
395 __u16 le_supv_timeout;
402 __u16 clock_accuracy;
404 unsigned long conn_info_timestamp;
412 struct sk_buff_head data_q;
413 struct list_head chan_list;
415 struct delayed_work disc_work;
416 struct delayed_work auto_accept_work;
417 struct delayed_work idle_work;
418 struct delayed_work le_conn_timeout;
422 struct hci_dev *hdev;
425 struct amp_mgr *amp_mgr;
427 struct hci_conn *link;
429 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
430 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
431 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
435 struct list_head list;
437 struct hci_conn *conn;
438 struct sk_buff_head data_q;
443 struct hci_conn_params {
444 struct list_head list;
445 struct list_head action;
450 u16 conn_min_interval;
451 u16 conn_max_interval;
453 u16 supervision_timeout;
456 HCI_AUTO_CONN_DISABLED,
457 HCI_AUTO_CONN_REPORT,
458 HCI_AUTO_CONN_ALWAYS,
459 HCI_AUTO_CONN_LINK_LOSS,
463 extern struct list_head hci_dev_list;
464 extern struct list_head hci_cb_list;
465 extern rwlock_t hci_dev_list_lock;
466 extern rwlock_t hci_cb_list_lock;
468 /* ----- HCI interface to upper protocols ----- */
469 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
470 void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
471 int l2cap_disconn_ind(struct hci_conn *hcon);
472 void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
473 int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
474 int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
476 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
477 void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
478 void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
479 int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
481 /* ----- Inquiry cache ----- */
482 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
483 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
485 static inline void discovery_init(struct hci_dev *hdev)
487 hdev->discovery.state = DISCOVERY_STOPPED;
488 INIT_LIST_HEAD(&hdev->discovery.all);
489 INIT_LIST_HEAD(&hdev->discovery.unknown);
490 INIT_LIST_HEAD(&hdev->discovery.resolve);
493 bool hci_discovery_active(struct hci_dev *hdev);
495 void hci_discovery_set_state(struct hci_dev *hdev, int state);
497 static inline int inquiry_cache_empty(struct hci_dev *hdev)
499 return list_empty(&hdev->discovery.all);
502 static inline long inquiry_cache_age(struct hci_dev *hdev)
504 struct discovery_state *c = &hdev->discovery;
505 return jiffies - c->timestamp;
508 static inline long inquiry_entry_age(struct inquiry_entry *e)
510 return jiffies - e->timestamp;
513 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
515 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
517 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
520 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
521 struct inquiry_entry *ie);
522 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
524 void hci_inquiry_cache_flush(struct hci_dev *hdev);
526 /* ----- HCI Connections ----- */
529 HCI_CONN_REAUTH_PEND,
530 HCI_CONN_ENCRYPT_PEND,
531 HCI_CONN_RSWITCH_PEND,
532 HCI_CONN_MODE_CHANGE_PEND,
533 HCI_CONN_SCO_SETUP_PEND,
534 HCI_CONN_LE_SMP_PEND,
535 HCI_CONN_MGMT_CONNECTED,
536 HCI_CONN_SSP_ENABLED,
547 HCI_CONN_STK_ENCRYPT,
550 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
552 struct hci_dev *hdev = conn->hdev;
553 return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
554 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
557 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
559 struct hci_dev *hdev = conn->hdev;
560 return test_bit(HCI_SC_ENABLED, &hdev->dev_flags) &&
561 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
564 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
566 struct hci_conn_hash *h = &hdev->conn_hash;
567 list_add_rcu(&c->list, &h->list);
585 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
587 struct hci_conn_hash *h = &hdev->conn_hash;
589 list_del_rcu(&c->list);
609 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
611 struct hci_conn_hash *h = &hdev->conn_hash;
627 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
629 struct hci_conn_hash *c = &hdev->conn_hash;
631 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
634 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
637 struct hci_conn_hash *h = &hdev->conn_hash;
642 list_for_each_entry_rcu(c, &h->list, list) {
643 if (c->handle == handle) {
653 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
654 __u8 type, bdaddr_t *ba)
656 struct hci_conn_hash *h = &hdev->conn_hash;
661 list_for_each_entry_rcu(c, &h->list, list) {
662 if (c->type == type && !bacmp(&c->dst, ba)) {
673 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
674 __u8 type, __u16 state)
676 struct hci_conn_hash *h = &hdev->conn_hash;
681 list_for_each_entry_rcu(c, &h->list, list) {
682 if (c->type == type && c->state == state) {
693 void hci_disconnect(struct hci_conn *conn, __u8 reason);
694 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
695 void hci_sco_setup(struct hci_conn *conn, __u8 status);
697 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
698 int hci_conn_del(struct hci_conn *conn);
699 void hci_conn_hash_flush(struct hci_dev *hdev);
700 void hci_conn_check_pending(struct hci_dev *hdev);
702 struct hci_chan *hci_chan_create(struct hci_conn *conn);
703 void hci_chan_del(struct hci_chan *chan);
704 void hci_chan_list_flush(struct hci_conn *conn);
705 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
707 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
708 u8 dst_type, u8 sec_level, u16 conn_timeout,
710 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
711 u8 sec_level, u8 auth_type);
712 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
714 int hci_conn_check_link_mode(struct hci_conn *conn);
715 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
716 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
717 int hci_conn_change_link_key(struct hci_conn *conn);
718 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
720 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
722 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
725 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
726 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
727 * working or anything else. They just guarantee that the object is available
728 * and can be dereferenced. So you can use its locks, local variables and any
729 * other constant data.
730 * Before accessing runtime data, you _must_ lock the object and then check that
731 * it is still running. As soon as you release the locks, the connection might
732 * get dropped, though.
734 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
735 * how long the underlying connection is held. So every channel that runs on the
736 * hci_conn object calls this to prevent the connection from disappearing. As
737 * long as you hold a device, you must also guarantee that you have a valid
738 * reference to the device via hci_conn_get() (or the initial reference from
740 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
741 * break because nobody cares for that. But this means, we cannot use
742 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
745 static inline void hci_conn_get(struct hci_conn *conn)
747 get_device(&conn->dev);
750 static inline void hci_conn_put(struct hci_conn *conn)
752 put_device(&conn->dev);
755 static inline void hci_conn_hold(struct hci_conn *conn)
757 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
759 atomic_inc(&conn->refcnt);
760 cancel_delayed_work(&conn->disc_work);
763 static inline void hci_conn_drop(struct hci_conn *conn)
765 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
767 if (atomic_dec_and_test(&conn->refcnt)) {
770 switch (conn->type) {
773 cancel_delayed_work(&conn->idle_work);
774 if (conn->state == BT_CONNECTED) {
775 timeo = conn->disc_timeout;
779 timeo = msecs_to_jiffies(10);
784 timeo = conn->disc_timeout;
788 timeo = msecs_to_jiffies(10);
792 cancel_delayed_work(&conn->disc_work);
793 queue_delayed_work(conn->hdev->workqueue,
794 &conn->disc_work, timeo);
798 /* ----- HCI Devices ----- */
799 static inline void hci_dev_put(struct hci_dev *d)
801 BT_DBG("%s orig refcnt %d", d->name,
802 atomic_read(&d->dev.kobj.kref.refcount));
807 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
809 BT_DBG("%s orig refcnt %d", d->name,
810 atomic_read(&d->dev.kobj.kref.refcount));
816 #define hci_dev_lock(d) mutex_lock(&d->lock)
817 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
819 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
820 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
822 static inline void *hci_get_drvdata(struct hci_dev *hdev)
824 return dev_get_drvdata(&hdev->dev);
827 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
829 dev_set_drvdata(&hdev->dev, data);
832 struct hci_dev *hci_dev_get(int index);
833 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
835 struct hci_dev *hci_alloc_dev(void);
836 void hci_free_dev(struct hci_dev *hdev);
837 int hci_register_dev(struct hci_dev *hdev);
838 void hci_unregister_dev(struct hci_dev *hdev);
839 int hci_suspend_dev(struct hci_dev *hdev);
840 int hci_resume_dev(struct hci_dev *hdev);
841 int hci_dev_open(__u16 dev);
842 int hci_dev_close(__u16 dev);
843 int hci_dev_reset(__u16 dev);
844 int hci_dev_reset_stat(__u16 dev);
845 int hci_dev_cmd(unsigned int cmd, void __user *arg);
846 int hci_get_dev_list(void __user *arg);
847 int hci_get_dev_info(void __user *arg);
848 int hci_get_conn_list(void __user *arg);
849 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
850 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
851 int hci_inquiry(void __user *arg);
853 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
854 bdaddr_t *bdaddr, u8 type);
855 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
856 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
857 void hci_bdaddr_list_clear(struct list_head *list);
859 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
860 bdaddr_t *addr, u8 addr_type);
861 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
862 bdaddr_t *addr, u8 addr_type);
863 int hci_conn_params_set(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
865 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
866 void hci_conn_params_clear_all(struct hci_dev *hdev);
867 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
869 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
873 void hci_update_background_scan(struct hci_dev *hdev);
875 void hci_uuids_clear(struct hci_dev *hdev);
877 void hci_link_keys_clear(struct hci_dev *hdev);
878 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
879 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
880 bdaddr_t *bdaddr, u8 *val, u8 type,
881 u8 pin_len, bool *persistent);
882 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, __le64 rand,
884 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
885 u8 addr_type, u8 type, u8 authenticated,
886 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
887 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
888 u8 addr_type, bool master);
889 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
890 void hci_smp_ltks_clear(struct hci_dev *hdev);
891 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
893 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
894 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
896 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
897 u8 addr_type, u8 val[16], bdaddr_t *rpa);
898 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
899 void hci_smp_irks_clear(struct hci_dev *hdev);
901 void hci_remote_oob_data_clear(struct hci_dev *hdev);
902 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
904 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
905 u8 *hash, u8 *randomizer);
906 int hci_add_remote_oob_ext_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
907 u8 *hash192, u8 *randomizer192,
908 u8 *hash256, u8 *randomizer256);
909 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
911 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
913 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
914 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
915 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
917 void hci_init_sysfs(struct hci_dev *hdev);
918 void hci_conn_init_sysfs(struct hci_conn *conn);
919 void hci_conn_add_sysfs(struct hci_conn *conn);
920 void hci_conn_del_sysfs(struct hci_conn *conn);
922 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
924 /* ----- LMP capabilities ----- */
925 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
926 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
927 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
928 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
929 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
930 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
931 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
932 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
933 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
934 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
935 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
936 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
937 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
938 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
939 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
940 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
941 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
942 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
943 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
945 /* ----- Extended LMP capabilities ----- */
946 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
947 #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
948 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
949 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
950 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
951 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
953 /* ----- Host capabilities ----- */
954 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
955 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
956 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
957 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
959 /* ----- HCI protocols ----- */
960 #define HCI_PROTO_DEFER 0x01
962 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
963 __u8 type, __u8 *flags)
967 return l2cap_connect_ind(hdev, bdaddr);
971 return sco_connect_ind(hdev, bdaddr, flags);
974 BT_ERR("unknown link type %d", type);
979 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
981 switch (conn->type) {
984 l2cap_connect_cfm(conn, status);
989 sco_connect_cfm(conn, status);
993 BT_ERR("unknown link type %d", conn->type);
997 if (conn->connect_cfm_cb)
998 conn->connect_cfm_cb(conn, status);
1001 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1003 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1004 return HCI_ERROR_REMOTE_USER_TERM;
1006 return l2cap_disconn_ind(conn);
1009 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
1011 switch (conn->type) {
1014 l2cap_disconn_cfm(conn, reason);
1019 sco_disconn_cfm(conn, reason);
1022 /* L2CAP would be handled for BREDR chan */
1027 BT_ERR("unknown link type %d", conn->type);
1031 if (conn->disconn_cfm_cb)
1032 conn->disconn_cfm_cb(conn, reason);
1035 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
1039 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1042 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1045 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1046 l2cap_security_cfm(conn, status, encrypt);
1048 if (conn->security_cfm_cb)
1049 conn->security_cfm_cb(conn, status);
1052 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
1055 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1058 l2cap_security_cfm(conn, status, encrypt);
1060 if (conn->security_cfm_cb)
1061 conn->security_cfm_cb(conn, status);
1064 /* ----- HCI callbacks ----- */
1066 struct list_head list;
1070 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1072 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1073 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1076 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1081 hci_proto_auth_cfm(conn, status);
1083 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1086 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1088 read_lock(&hci_cb_list_lock);
1089 list_for_each_entry(cb, &hci_cb_list, list) {
1090 if (cb->security_cfm)
1091 cb->security_cfm(conn, status, encrypt);
1093 read_unlock(&hci_cb_list_lock);
1096 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1101 if (conn->sec_level == BT_SECURITY_SDP)
1102 conn->sec_level = BT_SECURITY_LOW;
1104 if (conn->pending_sec_level > conn->sec_level)
1105 conn->sec_level = conn->pending_sec_level;
1107 hci_proto_encrypt_cfm(conn, status, encrypt);
1109 read_lock(&hci_cb_list_lock);
1110 list_for_each_entry(cb, &hci_cb_list, list) {
1111 if (cb->security_cfm)
1112 cb->security_cfm(conn, status, encrypt);
1114 read_unlock(&hci_cb_list_lock);
1117 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1121 read_lock(&hci_cb_list_lock);
1122 list_for_each_entry(cb, &hci_cb_list, list) {
1123 if (cb->key_change_cfm)
1124 cb->key_change_cfm(conn, status);
1126 read_unlock(&hci_cb_list_lock);
1129 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1134 read_lock(&hci_cb_list_lock);
1135 list_for_each_entry(cb, &hci_cb_list, list) {
1136 if (cb->role_switch_cfm)
1137 cb->role_switch_cfm(conn, status, role);
1139 read_unlock(&hci_cb_list_lock);
1142 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
1149 while (parsed < data_len - 1) {
1150 u8 field_len = data[0];
1155 parsed += field_len + 1;
1157 if (parsed > data_len)
1160 if (data[1] == type)
1163 data += field_len + 1;
1169 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1171 if (addr_type != ADDR_LE_DEV_RANDOM)
1174 if ((bdaddr->b[5] & 0xc0) == 0x40)
1180 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1182 if (addr_type == ADDR_LE_DEV_PUBLIC)
1185 /* Check for Random Static address type */
1186 if ((addr->b[5] & 0xc0) == 0xc0)
1192 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1193 bdaddr_t *bdaddr, u8 addr_type)
1195 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1198 return hci_find_irk_by_rpa(hdev, bdaddr);
1201 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1206 if (min > max || min < 6 || max > 3200)
1209 if (to_multiplier < 10 || to_multiplier > 3200)
1212 if (max >= to_multiplier * 8)
1215 max_latency = (to_multiplier * 8 / max) - 1;
1216 if (latency > 499 || latency > max_latency)
1222 int hci_register_cb(struct hci_cb *hcb);
1223 int hci_unregister_cb(struct hci_cb *hcb);
1225 struct hci_request {
1226 struct hci_dev *hdev;
1227 struct sk_buff_head cmd_q;
1229 /* If something goes wrong when building the HCI request, the error
1230 * value is stored in this field.
1235 void hci_req_init(struct hci_request *req, struct hci_dev *hdev);
1236 int hci_req_run(struct hci_request *req, hci_req_complete_t complete);
1237 void hci_req_add(struct hci_request *req, u16 opcode, u32 plen,
1239 void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen,
1240 const void *param, u8 event);
1241 void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
1243 void hci_req_add_le_scan_disable(struct hci_request *req);
1244 void hci_req_add_le_passive_scan(struct hci_request *req);
1246 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1247 const void *param, u32 timeout);
1248 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1249 const void *param, u8 event, u32 timeout);
1251 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1253 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1254 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1256 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1258 /* ----- HCI Sockets ----- */
1259 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1260 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1261 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1263 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1265 /* Management interface */
1266 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1267 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1268 BIT(BDADDR_LE_RANDOM))
1269 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1270 BIT(BDADDR_LE_PUBLIC) | \
1271 BIT(BDADDR_LE_RANDOM))
1273 /* These LE scan and inquiry parameters were chosen according to LE General
1274 * Discovery Procedure specification.
1276 #define DISCOV_LE_SCAN_WIN 0x12
1277 #define DISCOV_LE_SCAN_INT 0x12
1278 #define DISCOV_LE_TIMEOUT 10240 /* msec */
1279 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1280 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1281 #define DISCOV_BREDR_INQUIRY_LEN 0x08
1283 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1284 int mgmt_new_settings(struct hci_dev *hdev);
1285 void mgmt_index_added(struct hci_dev *hdev);
1286 void mgmt_index_removed(struct hci_dev *hdev);
1287 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1288 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1289 void mgmt_discoverable_timeout(struct hci_dev *hdev);
1290 void mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
1291 void mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
1292 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1294 void mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1295 u8 addr_type, u32 flags, u8 *name, u8 name_len,
1297 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1298 u8 link_type, u8 addr_type, u8 reason,
1299 bool mgmt_connected);
1300 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1301 u8 link_type, u8 addr_type, u8 status);
1302 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1303 u8 addr_type, u8 status);
1304 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1305 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1307 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1309 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1310 u8 link_type, u8 addr_type, u32 value,
1312 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1313 u8 link_type, u8 addr_type, u8 status);
1314 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1315 u8 link_type, u8 addr_type, u8 status);
1316 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1317 u8 link_type, u8 addr_type);
1318 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1319 u8 link_type, u8 addr_type, u8 status);
1320 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1321 u8 link_type, u8 addr_type, u8 status);
1322 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1323 u8 link_type, u8 addr_type, u32 passkey,
1325 void mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1326 u8 addr_type, u8 status);
1327 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1328 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1329 void mgmt_sc_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1330 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1332 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1333 void mgmt_read_local_oob_data_complete(struct hci_dev *hdev, u8 *hash192,
1334 u8 *randomizer192, u8 *hash256,
1335 u8 *randomizer256, u8 status);
1336 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1337 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1338 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1339 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1340 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1341 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1342 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1343 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk);
1344 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1346 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1347 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1348 u16 max_interval, u16 latency, u16 timeout);
1349 void mgmt_reenable_advertising(struct hci_dev *hdev);
1350 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1352 /* HCI info for socket */
1353 #define hci_pi(sk) ((struct hci_pinfo *) sk)
1357 struct hci_dev *hdev;
1358 struct hci_filter filter;
1360 unsigned short channel;
1363 /* HCI security filter */
1364 #define HCI_SFLT_MAX_OGF 5
1366 struct hci_sec_filter {
1368 __u32 event_mask[2];
1369 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1372 /* ----- HCI requests ----- */
1373 #define HCI_REQ_DONE 0
1374 #define HCI_REQ_PEND 1
1375 #define HCI_REQ_CANCELED 2
1377 #define hci_req_lock(d) mutex_lock(&d->req_lock)
1378 #define hci_req_unlock(d) mutex_unlock(&d->req_lock)
1380 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1382 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1385 int hci_update_random_address(struct hci_request *req, bool require_privacy,
1387 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1390 #define SCO_AIRMODE_MASK 0x0003
1391 #define SCO_AIRMODE_CVSD 0x0000
1392 #define SCO_AIRMODE_TRANSP 0x0003
1394 #endif /* __HCI_CORE_H */