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];
80 struct hci_conn_hash {
81 struct list_head list;
89 struct list_head list;
95 struct list_head list;
109 struct list_head list;
121 struct list_head list;
129 struct list_head list;
132 u8 val[HCI_LINK_KEY_SIZE];
137 struct list_head list;
140 u8 randomizer192[16];
142 u8 randomizer256[16];
145 #define HCI_MAX_SHORT_NAME_LENGTH 10
147 /* Default LE RPA expiry time, 15 minutes */
148 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
150 /* Default min/max age of connection information (1s/3s) */
151 #define DEFAULT_CONN_INFO_MIN_AGE 1000
152 #define DEFAULT_CONN_INFO_MAX_AGE 3000
159 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
162 #define HCI_MAX_PAGES 3
164 #define NUM_REASSEMBLY 4
166 struct list_head list;
176 bdaddr_t public_addr;
177 bdaddr_t random_addr;
178 bdaddr_t static_addr;
180 __u8 dev_name[HCI_MAX_NAME_LENGTH];
181 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
182 __u8 eir[HCI_MAX_EIR_LENGTH];
187 __u8 features[HCI_MAX_PAGES][8];
189 __u8 le_white_list_size;
201 __u16 page_scan_interval;
202 __u16 page_scan_window;
204 __u8 le_adv_channel_map;
206 __u16 le_scan_interval;
207 __u16 le_scan_window;
208 __u16 le_conn_min_interval;
209 __u16 le_conn_max_interval;
210 __u16 le_conn_latency;
211 __u16 le_supv_timeout;
212 __u16 discov_interleaved_timeout;
213 __u16 conn_info_min_age;
214 __u16 conn_info_max_age;
229 __u16 sniff_min_interval;
230 __u16 sniff_max_interval;
235 __u32 amp_min_latency;
239 __u16 amp_assoc_size;
240 __u32 amp_max_flush_to;
241 __u32 amp_be_flush_to;
243 struct amp_assoc loc_assoc;
247 unsigned int auto_accept_delay;
249 unsigned long quirks;
252 unsigned int acl_cnt;
253 unsigned int sco_cnt;
256 unsigned int acl_mtu;
257 unsigned int sco_mtu;
259 unsigned int acl_pkts;
260 unsigned int sco_pkts;
261 unsigned int le_pkts;
268 unsigned long acl_last_tx;
269 unsigned long sco_last_tx;
270 unsigned long le_last_tx;
272 struct workqueue_struct *workqueue;
273 struct workqueue_struct *req_workqueue;
275 struct work_struct power_on;
276 struct delayed_work power_off;
278 __u16 discov_timeout;
279 struct delayed_work discov_off;
281 struct delayed_work service_cache;
283 struct delayed_work cmd_timer;
285 struct work_struct rx_work;
286 struct work_struct cmd_work;
287 struct work_struct tx_work;
289 struct sk_buff_head rx_q;
290 struct sk_buff_head raw_q;
291 struct sk_buff_head cmd_q;
293 struct sk_buff *recv_evt;
294 struct sk_buff *sent_cmd;
295 struct sk_buff *reassembly[NUM_REASSEMBLY];
297 struct mutex req_lock;
298 wait_queue_head_t req_wait_q;
302 struct crypto_blkcipher *tfm_aes;
304 struct discovery_state discovery;
305 struct hci_conn_hash conn_hash;
307 struct list_head mgmt_pending;
308 struct list_head blacklist;
309 struct list_head whitelist;
310 struct list_head uuids;
311 struct list_head link_keys;
312 struct list_head long_term_keys;
313 struct list_head identity_resolving_keys;
314 struct list_head remote_oob_data;
315 struct list_head le_white_list;
316 struct list_head le_conn_params;
317 struct list_head pend_le_conns;
318 struct list_head pend_le_reports;
320 struct hci_dev_stats stat;
324 struct dentry *debugfs;
328 struct rfkill *rfkill;
330 unsigned long dbg_flags;
331 unsigned long dev_flags;
333 struct delayed_work le_scan_disable;
336 __u8 adv_data[HCI_MAX_AD_LENGTH];
338 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
339 __u8 scan_rsp_data_len;
343 struct delayed_work rpa_expired;
346 int (*open)(struct hci_dev *hdev);
347 int (*close)(struct hci_dev *hdev);
348 int (*flush)(struct hci_dev *hdev);
349 int (*setup)(struct hci_dev *hdev);
350 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
351 void (*notify)(struct hci_dev *hdev, unsigned int evt);
352 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
355 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
358 struct list_head list;
378 __u8 features[HCI_MAX_PAGES][8];
384 __u8 pending_sec_level;
388 __u32 passkey_notify;
389 __u8 passkey_entered;
393 __u16 le_conn_min_interval;
394 __u16 le_conn_max_interval;
395 __u16 le_conn_interval;
396 __u16 le_conn_latency;
397 __u16 le_supv_timeout;
404 __u16 clock_accuracy;
406 unsigned long conn_info_timestamp;
414 struct sk_buff_head data_q;
415 struct list_head chan_list;
417 struct delayed_work disc_work;
418 struct delayed_work auto_accept_work;
419 struct delayed_work idle_work;
420 struct delayed_work le_conn_timeout;
424 struct hci_dev *hdev;
427 struct amp_mgr *amp_mgr;
429 struct hci_conn *link;
431 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
432 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
433 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
437 struct list_head list;
439 struct hci_conn *conn;
440 struct sk_buff_head data_q;
445 struct hci_conn_params {
446 struct list_head list;
447 struct list_head action;
452 u16 conn_min_interval;
453 u16 conn_max_interval;
455 u16 supervision_timeout;
458 HCI_AUTO_CONN_DISABLED,
459 HCI_AUTO_CONN_REPORT,
460 HCI_AUTO_CONN_ALWAYS,
461 HCI_AUTO_CONN_LINK_LOSS,
465 extern struct list_head hci_dev_list;
466 extern struct list_head hci_cb_list;
467 extern rwlock_t hci_dev_list_lock;
468 extern rwlock_t hci_cb_list_lock;
470 /* ----- HCI interface to upper protocols ----- */
471 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
472 void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
473 int l2cap_disconn_ind(struct hci_conn *hcon);
474 void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
475 int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
476 int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
478 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
479 void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
480 void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
481 int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
483 /* ----- Inquiry cache ----- */
484 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
485 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
487 static inline void discovery_init(struct hci_dev *hdev)
489 hdev->discovery.state = DISCOVERY_STOPPED;
490 INIT_LIST_HEAD(&hdev->discovery.all);
491 INIT_LIST_HEAD(&hdev->discovery.unknown);
492 INIT_LIST_HEAD(&hdev->discovery.resolve);
495 bool hci_discovery_active(struct hci_dev *hdev);
497 void hci_discovery_set_state(struct hci_dev *hdev, int state);
499 static inline int inquiry_cache_empty(struct hci_dev *hdev)
501 return list_empty(&hdev->discovery.all);
504 static inline long inquiry_cache_age(struct hci_dev *hdev)
506 struct discovery_state *c = &hdev->discovery;
507 return jiffies - c->timestamp;
510 static inline long inquiry_entry_age(struct inquiry_entry *e)
512 return jiffies - e->timestamp;
515 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
517 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
519 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
522 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
523 struct inquiry_entry *ie);
524 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
526 void hci_inquiry_cache_flush(struct hci_dev *hdev);
528 /* ----- HCI Connections ----- */
531 HCI_CONN_REAUTH_PEND,
532 HCI_CONN_ENCRYPT_PEND,
533 HCI_CONN_RSWITCH_PEND,
534 HCI_CONN_MODE_CHANGE_PEND,
535 HCI_CONN_SCO_SETUP_PEND,
536 HCI_CONN_LE_SMP_PEND,
537 HCI_CONN_MGMT_CONNECTED,
538 HCI_CONN_SSP_ENABLED,
548 HCI_CONN_STK_ENCRYPT,
551 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
553 struct hci_dev *hdev = conn->hdev;
554 return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
555 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
558 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
560 struct hci_dev *hdev = conn->hdev;
561 return test_bit(HCI_SC_ENABLED, &hdev->dev_flags) &&
562 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
565 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
567 struct hci_conn_hash *h = &hdev->conn_hash;
568 list_add_rcu(&c->list, &h->list);
586 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
588 struct hci_conn_hash *h = &hdev->conn_hash;
590 list_del_rcu(&c->list);
610 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
612 struct hci_conn_hash *h = &hdev->conn_hash;
628 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
630 struct hci_conn_hash *c = &hdev->conn_hash;
632 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
635 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
638 struct hci_conn_hash *h = &hdev->conn_hash;
643 list_for_each_entry_rcu(c, &h->list, list) {
644 if (c->handle == handle) {
654 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
655 __u8 type, bdaddr_t *ba)
657 struct hci_conn_hash *h = &hdev->conn_hash;
662 list_for_each_entry_rcu(c, &h->list, list) {
663 if (c->type == type && !bacmp(&c->dst, ba)) {
674 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
675 __u8 type, __u16 state)
677 struct hci_conn_hash *h = &hdev->conn_hash;
682 list_for_each_entry_rcu(c, &h->list, list) {
683 if (c->type == type && c->state == state) {
694 void hci_disconnect(struct hci_conn *conn, __u8 reason);
695 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
696 void hci_sco_setup(struct hci_conn *conn, __u8 status);
698 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
699 int hci_conn_del(struct hci_conn *conn);
700 void hci_conn_hash_flush(struct hci_dev *hdev);
701 void hci_conn_check_pending(struct hci_dev *hdev);
703 struct hci_chan *hci_chan_create(struct hci_conn *conn);
704 void hci_chan_del(struct hci_chan *chan);
705 void hci_chan_list_flush(struct hci_conn *conn);
706 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
708 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
709 u8 dst_type, u8 sec_level, u16 conn_timeout,
711 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
712 u8 sec_level, u8 auth_type);
713 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
715 int hci_conn_check_link_mode(struct hci_conn *conn);
716 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
717 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
718 int hci_conn_change_link_key(struct hci_conn *conn);
719 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
721 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
723 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
726 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
727 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
728 * working or anything else. They just guarantee that the object is available
729 * and can be dereferenced. So you can use its locks, local variables and any
730 * other constant data.
731 * Before accessing runtime data, you _must_ lock the object and then check that
732 * it is still running. As soon as you release the locks, the connection might
733 * get dropped, though.
735 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
736 * how long the underlying connection is held. So every channel that runs on the
737 * hci_conn object calls this to prevent the connection from disappearing. As
738 * long as you hold a device, you must also guarantee that you have a valid
739 * reference to the device via hci_conn_get() (or the initial reference from
741 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
742 * break because nobody cares for that. But this means, we cannot use
743 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
746 static inline void hci_conn_get(struct hci_conn *conn)
748 get_device(&conn->dev);
751 static inline void hci_conn_put(struct hci_conn *conn)
753 put_device(&conn->dev);
756 static inline void hci_conn_hold(struct hci_conn *conn)
758 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
760 atomic_inc(&conn->refcnt);
761 cancel_delayed_work(&conn->disc_work);
764 static inline void hci_conn_drop(struct hci_conn *conn)
766 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
768 if (atomic_dec_and_test(&conn->refcnt)) {
771 switch (conn->type) {
774 cancel_delayed_work(&conn->idle_work);
775 if (conn->state == BT_CONNECTED) {
776 timeo = conn->disc_timeout;
780 timeo = msecs_to_jiffies(10);
785 timeo = conn->disc_timeout;
789 timeo = msecs_to_jiffies(10);
793 cancel_delayed_work(&conn->disc_work);
794 queue_delayed_work(conn->hdev->workqueue,
795 &conn->disc_work, timeo);
799 /* ----- HCI Devices ----- */
800 static inline void hci_dev_put(struct hci_dev *d)
802 BT_DBG("%s orig refcnt %d", d->name,
803 atomic_read(&d->dev.kobj.kref.refcount));
808 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
810 BT_DBG("%s orig refcnt %d", d->name,
811 atomic_read(&d->dev.kobj.kref.refcount));
817 #define hci_dev_lock(d) mutex_lock(&d->lock)
818 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
820 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
821 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
823 static inline void *hci_get_drvdata(struct hci_dev *hdev)
825 return dev_get_drvdata(&hdev->dev);
828 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
830 dev_set_drvdata(&hdev->dev, data);
833 struct hci_dev *hci_dev_get(int index);
834 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
836 struct hci_dev *hci_alloc_dev(void);
837 void hci_free_dev(struct hci_dev *hdev);
838 int hci_register_dev(struct hci_dev *hdev);
839 void hci_unregister_dev(struct hci_dev *hdev);
840 int hci_suspend_dev(struct hci_dev *hdev);
841 int hci_resume_dev(struct hci_dev *hdev);
842 int hci_dev_open(__u16 dev);
843 int hci_dev_close(__u16 dev);
844 int hci_dev_reset(__u16 dev);
845 int hci_dev_reset_stat(__u16 dev);
846 int hci_dev_cmd(unsigned int cmd, void __user *arg);
847 int hci_get_dev_list(void __user *arg);
848 int hci_get_dev_info(void __user *arg);
849 int hci_get_conn_list(void __user *arg);
850 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
851 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
852 int hci_inquiry(void __user *arg);
854 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
855 bdaddr_t *bdaddr, u8 type);
856 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
857 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
858 void hci_bdaddr_list_clear(struct list_head *list);
860 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
861 bdaddr_t *addr, u8 addr_type);
862 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
863 bdaddr_t *addr, u8 addr_type);
864 int hci_conn_params_set(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
866 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
867 void hci_conn_params_clear_all(struct hci_dev *hdev);
868 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
870 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
874 void hci_update_background_scan(struct hci_dev *hdev);
876 void hci_uuids_clear(struct hci_dev *hdev);
878 void hci_link_keys_clear(struct hci_dev *hdev);
879 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
880 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
881 bdaddr_t *bdaddr, u8 *val, u8 type,
882 u8 pin_len, bool *persistent);
883 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, __le64 rand,
885 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
886 u8 addr_type, u8 type, u8 authenticated,
887 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
888 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
889 u8 addr_type, bool master);
890 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
891 void hci_smp_ltks_clear(struct hci_dev *hdev);
892 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
894 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
895 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
897 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
898 u8 addr_type, u8 val[16], bdaddr_t *rpa);
899 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
900 void hci_smp_irks_clear(struct hci_dev *hdev);
902 void hci_remote_oob_data_clear(struct hci_dev *hdev);
903 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
905 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
906 u8 *hash, u8 *randomizer);
907 int hci_add_remote_oob_ext_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
908 u8 *hash192, u8 *randomizer192,
909 u8 *hash256, u8 *randomizer256);
910 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
912 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
914 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
915 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
916 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
918 void hci_init_sysfs(struct hci_dev *hdev);
919 void hci_conn_init_sysfs(struct hci_conn *conn);
920 void hci_conn_add_sysfs(struct hci_conn *conn);
921 void hci_conn_del_sysfs(struct hci_conn *conn);
923 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
925 /* ----- LMP capabilities ----- */
926 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
927 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
928 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
929 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
930 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
931 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
932 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
933 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
934 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
935 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
936 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
937 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
938 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
939 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
940 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
941 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
942 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
943 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
944 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
946 /* ----- Extended LMP capabilities ----- */
947 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
948 #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
949 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
950 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
951 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
952 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
954 /* ----- Host capabilities ----- */
955 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
956 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
957 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
958 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
960 /* ----- HCI protocols ----- */
961 #define HCI_PROTO_DEFER 0x01
963 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
964 __u8 type, __u8 *flags)
968 return l2cap_connect_ind(hdev, bdaddr);
972 return sco_connect_ind(hdev, bdaddr, flags);
975 BT_ERR("unknown link type %d", type);
980 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
982 switch (conn->type) {
985 l2cap_connect_cfm(conn, status);
990 sco_connect_cfm(conn, status);
994 BT_ERR("unknown link type %d", conn->type);
998 if (conn->connect_cfm_cb)
999 conn->connect_cfm_cb(conn, status);
1002 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1004 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1005 return HCI_ERROR_REMOTE_USER_TERM;
1007 return l2cap_disconn_ind(conn);
1010 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
1012 switch (conn->type) {
1015 l2cap_disconn_cfm(conn, reason);
1020 sco_disconn_cfm(conn, reason);
1023 /* L2CAP would be handled for BREDR chan */
1028 BT_ERR("unknown link type %d", conn->type);
1032 if (conn->disconn_cfm_cb)
1033 conn->disconn_cfm_cb(conn, reason);
1036 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
1040 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1043 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1046 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1047 l2cap_security_cfm(conn, status, encrypt);
1049 if (conn->security_cfm_cb)
1050 conn->security_cfm_cb(conn, status);
1053 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
1056 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1059 l2cap_security_cfm(conn, status, encrypt);
1061 if (conn->security_cfm_cb)
1062 conn->security_cfm_cb(conn, status);
1065 /* ----- HCI callbacks ----- */
1067 struct list_head list;
1071 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1073 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1074 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1077 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1082 hci_proto_auth_cfm(conn, status);
1084 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1087 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1089 read_lock(&hci_cb_list_lock);
1090 list_for_each_entry(cb, &hci_cb_list, list) {
1091 if (cb->security_cfm)
1092 cb->security_cfm(conn, status, encrypt);
1094 read_unlock(&hci_cb_list_lock);
1097 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1102 if (conn->sec_level == BT_SECURITY_SDP)
1103 conn->sec_level = BT_SECURITY_LOW;
1105 if (conn->pending_sec_level > conn->sec_level)
1106 conn->sec_level = conn->pending_sec_level;
1108 hci_proto_encrypt_cfm(conn, status, encrypt);
1110 read_lock(&hci_cb_list_lock);
1111 list_for_each_entry(cb, &hci_cb_list, list) {
1112 if (cb->security_cfm)
1113 cb->security_cfm(conn, status, encrypt);
1115 read_unlock(&hci_cb_list_lock);
1118 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1122 read_lock(&hci_cb_list_lock);
1123 list_for_each_entry(cb, &hci_cb_list, list) {
1124 if (cb->key_change_cfm)
1125 cb->key_change_cfm(conn, status);
1127 read_unlock(&hci_cb_list_lock);
1130 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1135 read_lock(&hci_cb_list_lock);
1136 list_for_each_entry(cb, &hci_cb_list, list) {
1137 if (cb->role_switch_cfm)
1138 cb->role_switch_cfm(conn, status, role);
1140 read_unlock(&hci_cb_list_lock);
1143 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
1150 while (parsed < data_len - 1) {
1151 u8 field_len = data[0];
1156 parsed += field_len + 1;
1158 if (parsed > data_len)
1161 if (data[1] == type)
1164 data += field_len + 1;
1170 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1172 if (addr_type != ADDR_LE_DEV_RANDOM)
1175 if ((bdaddr->b[5] & 0xc0) == 0x40)
1181 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1183 if (addr_type == ADDR_LE_DEV_PUBLIC)
1186 /* Check for Random Static address type */
1187 if ((addr->b[5] & 0xc0) == 0xc0)
1193 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1194 bdaddr_t *bdaddr, u8 addr_type)
1196 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1199 return hci_find_irk_by_rpa(hdev, bdaddr);
1202 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1207 if (min > max || min < 6 || max > 3200)
1210 if (to_multiplier < 10 || to_multiplier > 3200)
1213 if (max >= to_multiplier * 8)
1216 max_latency = (to_multiplier * 8 / max) - 1;
1217 if (latency > 499 || latency > max_latency)
1223 int hci_register_cb(struct hci_cb *hcb);
1224 int hci_unregister_cb(struct hci_cb *hcb);
1226 struct hci_request {
1227 struct hci_dev *hdev;
1228 struct sk_buff_head cmd_q;
1230 /* If something goes wrong when building the HCI request, the error
1231 * value is stored in this field.
1236 void hci_req_init(struct hci_request *req, struct hci_dev *hdev);
1237 int hci_req_run(struct hci_request *req, hci_req_complete_t complete);
1238 void hci_req_add(struct hci_request *req, u16 opcode, u32 plen,
1240 void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen,
1241 const void *param, u8 event);
1242 void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
1243 bool hci_req_pending(struct hci_dev *hdev);
1245 void hci_req_add_le_scan_disable(struct hci_request *req);
1246 void hci_req_add_le_passive_scan(struct hci_request *req);
1248 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1249 const void *param, u32 timeout);
1250 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1251 const void *param, u8 event, u32 timeout);
1253 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1255 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1256 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1258 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1260 /* ----- HCI Sockets ----- */
1261 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1262 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1263 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1265 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1267 /* Management interface */
1268 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1269 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1270 BIT(BDADDR_LE_RANDOM))
1271 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1272 BIT(BDADDR_LE_PUBLIC) | \
1273 BIT(BDADDR_LE_RANDOM))
1275 /* These LE scan and inquiry parameters were chosen according to LE General
1276 * Discovery Procedure specification.
1278 #define DISCOV_LE_SCAN_WIN 0x12
1279 #define DISCOV_LE_SCAN_INT 0x12
1280 #define DISCOV_LE_TIMEOUT 10240 /* msec */
1281 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1282 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1283 #define DISCOV_BREDR_INQUIRY_LEN 0x08
1285 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1286 int mgmt_new_settings(struct hci_dev *hdev);
1287 void mgmt_index_added(struct hci_dev *hdev);
1288 void mgmt_index_removed(struct hci_dev *hdev);
1289 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1290 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1291 int mgmt_update_adv_data(struct hci_dev *hdev);
1292 void mgmt_discoverable_timeout(struct hci_dev *hdev);
1293 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1295 void mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1296 u8 addr_type, u32 flags, u8 *name, u8 name_len,
1298 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1299 u8 link_type, u8 addr_type, u8 reason,
1300 bool mgmt_connected);
1301 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1302 u8 link_type, u8 addr_type, u8 status);
1303 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1304 u8 addr_type, u8 status);
1305 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1306 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1308 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1310 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1311 u8 link_type, u8 addr_type, u32 value,
1313 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1314 u8 link_type, u8 addr_type, u8 status);
1315 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1316 u8 link_type, u8 addr_type, u8 status);
1317 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1318 u8 link_type, u8 addr_type);
1319 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1320 u8 link_type, u8 addr_type, u8 status);
1321 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1322 u8 link_type, u8 addr_type, u8 status);
1323 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1324 u8 link_type, u8 addr_type, u32 passkey,
1326 void mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1327 u8 addr_type, u8 status);
1328 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1329 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1330 void mgmt_sc_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1331 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1333 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1334 void mgmt_read_local_oob_data_complete(struct hci_dev *hdev, u8 *hash192,
1335 u8 *randomizer192, u8 *hash256,
1336 u8 *randomizer256, u8 status);
1337 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1338 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1339 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1340 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1341 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1342 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1343 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1344 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk);
1345 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1347 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1348 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1349 u16 max_interval, u16 latency, u16 timeout);
1350 void mgmt_reenable_advertising(struct hci_dev *hdev);
1351 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1353 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1355 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1358 int hci_update_random_address(struct hci_request *req, bool require_privacy,
1360 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1363 #define SCO_AIRMODE_MASK 0x0003
1364 #define SCO_AIRMODE_CVSD 0x0000
1365 #define SCO_AIRMODE_TRANSP 0x0003
1367 #endif /* __HCI_CORE_H */