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;
86 unsigned int le_num_slave;
90 struct list_head list;
96 struct list_head list;
110 struct list_head list;
122 struct list_head list;
130 struct list_head list;
133 u8 val[HCI_LINK_KEY_SIZE];
138 struct list_head list;
141 u8 randomizer192[16];
143 u8 randomizer256[16];
146 #define HCI_MAX_SHORT_NAME_LENGTH 10
148 /* Default LE RPA expiry time, 15 minutes */
149 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60)
151 /* Default min/max age of connection information (1s/3s) */
152 #define DEFAULT_CONN_INFO_MIN_AGE 1000
153 #define DEFAULT_CONN_INFO_MAX_AGE 3000
160 __u8 data[HCI_MAX_AMP_ASSOC_SIZE];
163 #define HCI_MAX_PAGES 3
165 #define NUM_REASSEMBLY 4
167 struct list_head list;
177 bdaddr_t public_addr;
178 bdaddr_t random_addr;
179 bdaddr_t static_addr;
181 __u8 dev_name[HCI_MAX_NAME_LENGTH];
182 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH];
183 __u8 eir[HCI_MAX_EIR_LENGTH];
188 __u8 features[HCI_MAX_PAGES][8];
190 __u8 le_white_list_size;
202 __u16 page_scan_interval;
203 __u16 page_scan_window;
205 __u8 le_adv_channel_map;
206 __u16 le_adv_min_interval;
207 __u16 le_adv_max_interval;
209 __u16 le_scan_interval;
210 __u16 le_scan_window;
211 __u16 le_conn_min_interval;
212 __u16 le_conn_max_interval;
213 __u16 le_conn_latency;
214 __u16 le_supv_timeout;
215 __u16 discov_interleaved_timeout;
216 __u16 conn_info_min_age;
217 __u16 conn_info_max_age;
232 __u16 sniff_min_interval;
233 __u16 sniff_max_interval;
238 __u32 amp_min_latency;
242 __u16 amp_assoc_size;
243 __u32 amp_max_flush_to;
244 __u32 amp_be_flush_to;
246 struct amp_assoc loc_assoc;
250 unsigned int auto_accept_delay;
252 unsigned long quirks;
255 unsigned int acl_cnt;
256 unsigned int sco_cnt;
259 unsigned int acl_mtu;
260 unsigned int sco_mtu;
262 unsigned int acl_pkts;
263 unsigned int sco_pkts;
264 unsigned int le_pkts;
271 unsigned long acl_last_tx;
272 unsigned long sco_last_tx;
273 unsigned long le_last_tx;
275 struct workqueue_struct *workqueue;
276 struct workqueue_struct *req_workqueue;
278 struct work_struct power_on;
279 struct delayed_work power_off;
281 __u16 discov_timeout;
282 struct delayed_work discov_off;
284 struct delayed_work service_cache;
286 struct delayed_work cmd_timer;
288 struct work_struct rx_work;
289 struct work_struct cmd_work;
290 struct work_struct tx_work;
292 struct sk_buff_head rx_q;
293 struct sk_buff_head raw_q;
294 struct sk_buff_head cmd_q;
296 struct sk_buff *recv_evt;
297 struct sk_buff *sent_cmd;
298 struct sk_buff *reassembly[NUM_REASSEMBLY];
300 struct mutex req_lock;
301 wait_queue_head_t req_wait_q;
305 struct crypto_blkcipher *tfm_aes;
307 struct discovery_state discovery;
308 struct hci_conn_hash conn_hash;
310 struct list_head mgmt_pending;
311 struct list_head blacklist;
312 struct list_head whitelist;
313 struct list_head uuids;
314 struct list_head link_keys;
315 struct list_head long_term_keys;
316 struct list_head identity_resolving_keys;
317 struct list_head remote_oob_data;
318 struct list_head le_white_list;
319 struct list_head le_conn_params;
320 struct list_head pend_le_conns;
321 struct list_head pend_le_reports;
323 struct hci_dev_stats stat;
327 struct dentry *debugfs;
331 struct rfkill *rfkill;
333 unsigned long dbg_flags;
334 unsigned long dev_flags;
336 struct delayed_work le_scan_disable;
339 __u8 adv_data[HCI_MAX_AD_LENGTH];
341 __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
342 __u8 scan_rsp_data_len;
346 struct delayed_work rpa_expired;
349 int (*open)(struct hci_dev *hdev);
350 int (*close)(struct hci_dev *hdev);
351 int (*flush)(struct hci_dev *hdev);
352 int (*setup)(struct hci_dev *hdev);
353 int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
354 void (*notify)(struct hci_dev *hdev, unsigned int evt);
355 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
358 #define HCI_PHY_HANDLE(handle) (handle & 0xff)
361 struct list_head list;
381 __u8 features[HCI_MAX_PAGES][8];
387 __u8 pending_sec_level;
391 __u32 passkey_notify;
392 __u8 passkey_entered;
396 __u16 le_conn_min_interval;
397 __u16 le_conn_max_interval;
398 __u16 le_conn_interval;
399 __u16 le_conn_latency;
400 __u16 le_supv_timeout;
407 __u16 clock_accuracy;
409 unsigned long conn_info_timestamp;
417 struct sk_buff_head data_q;
418 struct list_head chan_list;
420 struct delayed_work disc_work;
421 struct delayed_work auto_accept_work;
422 struct delayed_work idle_work;
423 struct delayed_work le_conn_timeout;
427 struct hci_dev *hdev;
430 struct amp_mgr *amp_mgr;
432 struct hci_conn *link;
434 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
435 void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
436 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason);
440 struct list_head list;
442 struct hci_conn *conn;
443 struct sk_buff_head data_q;
448 struct hci_conn_params {
449 struct list_head list;
450 struct list_head action;
455 u16 conn_min_interval;
456 u16 conn_max_interval;
458 u16 supervision_timeout;
461 HCI_AUTO_CONN_DISABLED,
462 HCI_AUTO_CONN_REPORT,
463 HCI_AUTO_CONN_DIRECT,
464 HCI_AUTO_CONN_ALWAYS,
465 HCI_AUTO_CONN_LINK_LOSS,
469 extern struct list_head hci_dev_list;
470 extern struct list_head hci_cb_list;
471 extern rwlock_t hci_dev_list_lock;
472 extern rwlock_t hci_cb_list_lock;
474 /* ----- HCI interface to upper protocols ----- */
475 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
476 void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
477 int l2cap_disconn_ind(struct hci_conn *hcon);
478 void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
479 int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
480 int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
482 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
483 void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
484 void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
485 int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
487 /* ----- Inquiry cache ----- */
488 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */
489 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */
491 static inline void discovery_init(struct hci_dev *hdev)
493 hdev->discovery.state = DISCOVERY_STOPPED;
494 INIT_LIST_HEAD(&hdev->discovery.all);
495 INIT_LIST_HEAD(&hdev->discovery.unknown);
496 INIT_LIST_HEAD(&hdev->discovery.resolve);
499 bool hci_discovery_active(struct hci_dev *hdev);
501 void hci_discovery_set_state(struct hci_dev *hdev, int state);
503 static inline int inquiry_cache_empty(struct hci_dev *hdev)
505 return list_empty(&hdev->discovery.all);
508 static inline long inquiry_cache_age(struct hci_dev *hdev)
510 struct discovery_state *c = &hdev->discovery;
511 return jiffies - c->timestamp;
514 static inline long inquiry_entry_age(struct inquiry_entry *e)
516 return jiffies - e->timestamp;
519 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
521 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
523 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
526 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
527 struct inquiry_entry *ie);
528 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
530 void hci_inquiry_cache_flush(struct hci_dev *hdev);
532 /* ----- HCI Connections ----- */
535 HCI_CONN_REAUTH_PEND,
536 HCI_CONN_ENCRYPT_PEND,
537 HCI_CONN_RSWITCH_PEND,
538 HCI_CONN_MODE_CHANGE_PEND,
539 HCI_CONN_SCO_SETUP_PEND,
540 HCI_CONN_LE_SMP_PEND,
541 HCI_CONN_MGMT_CONNECTED,
542 HCI_CONN_SSP_ENABLED,
552 HCI_CONN_STK_ENCRYPT,
553 HCI_CONN_AUTH_INITIATOR,
556 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
558 struct hci_dev *hdev = conn->hdev;
559 return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
560 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
563 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
565 struct hci_dev *hdev = conn->hdev;
566 return test_bit(HCI_SC_ENABLED, &hdev->dev_flags) &&
567 test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
570 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
572 struct hci_conn_hash *h = &hdev->conn_hash;
573 list_add_rcu(&c->list, &h->list);
583 if (c->role == HCI_ROLE_SLAVE)
593 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
595 struct hci_conn_hash *h = &hdev->conn_hash;
597 list_del_rcu(&c->list);
609 if (c->role == HCI_ROLE_SLAVE)
619 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
621 struct hci_conn_hash *h = &hdev->conn_hash;
637 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
639 struct hci_conn_hash *c = &hdev->conn_hash;
641 return c->acl_num + c->amp_num + c->sco_num + c->le_num;
644 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
647 struct hci_conn_hash *h = &hdev->conn_hash;
652 list_for_each_entry_rcu(c, &h->list, list) {
653 if (c->handle == handle) {
663 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
664 __u8 type, bdaddr_t *ba)
666 struct hci_conn_hash *h = &hdev->conn_hash;
671 list_for_each_entry_rcu(c, &h->list, list) {
672 if (c->type == type && !bacmp(&c->dst, ba)) {
683 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
684 __u8 type, __u16 state)
686 struct hci_conn_hash *h = &hdev->conn_hash;
691 list_for_each_entry_rcu(c, &h->list, list) {
692 if (c->type == type && c->state == state) {
703 void hci_disconnect(struct hci_conn *conn, __u8 reason);
704 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
705 void hci_sco_setup(struct hci_conn *conn, __u8 status);
707 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
709 int hci_conn_del(struct hci_conn *conn);
710 void hci_conn_hash_flush(struct hci_dev *hdev);
711 void hci_conn_check_pending(struct hci_dev *hdev);
713 struct hci_chan *hci_chan_create(struct hci_conn *conn);
714 void hci_chan_del(struct hci_chan *chan);
715 void hci_chan_list_flush(struct hci_conn *conn);
716 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
718 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
719 u8 dst_type, u8 sec_level, u16 conn_timeout,
721 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
722 u8 sec_level, u8 auth_type);
723 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
725 int hci_conn_check_link_mode(struct hci_conn *conn);
726 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
727 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
729 int hci_conn_change_link_key(struct hci_conn *conn);
730 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
732 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
734 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
737 * hci_conn_get() and hci_conn_put() are used to control the life-time of an
738 * "hci_conn" object. They do not guarantee that the hci_conn object is running,
739 * working or anything else. They just guarantee that the object is available
740 * and can be dereferenced. So you can use its locks, local variables and any
741 * other constant data.
742 * Before accessing runtime data, you _must_ lock the object and then check that
743 * it is still running. As soon as you release the locks, the connection might
744 * get dropped, though.
746 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
747 * how long the underlying connection is held. So every channel that runs on the
748 * hci_conn object calls this to prevent the connection from disappearing. As
749 * long as you hold a device, you must also guarantee that you have a valid
750 * reference to the device via hci_conn_get() (or the initial reference from
752 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
753 * break because nobody cares for that. But this means, we cannot use
754 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
757 static inline void hci_conn_get(struct hci_conn *conn)
759 get_device(&conn->dev);
762 static inline void hci_conn_put(struct hci_conn *conn)
764 put_device(&conn->dev);
767 static inline void hci_conn_hold(struct hci_conn *conn)
769 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
771 atomic_inc(&conn->refcnt);
772 cancel_delayed_work(&conn->disc_work);
775 static inline void hci_conn_drop(struct hci_conn *conn)
777 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
779 if (atomic_dec_and_test(&conn->refcnt)) {
782 switch (conn->type) {
785 cancel_delayed_work(&conn->idle_work);
786 if (conn->state == BT_CONNECTED) {
787 timeo = conn->disc_timeout;
791 timeo = msecs_to_jiffies(10);
796 timeo = conn->disc_timeout;
800 timeo = msecs_to_jiffies(10);
804 cancel_delayed_work(&conn->disc_work);
805 queue_delayed_work(conn->hdev->workqueue,
806 &conn->disc_work, timeo);
810 /* ----- HCI Devices ----- */
811 static inline void hci_dev_put(struct hci_dev *d)
813 BT_DBG("%s orig refcnt %d", d->name,
814 atomic_read(&d->dev.kobj.kref.refcount));
819 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
821 BT_DBG("%s orig refcnt %d", d->name,
822 atomic_read(&d->dev.kobj.kref.refcount));
828 #define hci_dev_lock(d) mutex_lock(&d->lock)
829 #define hci_dev_unlock(d) mutex_unlock(&d->lock)
831 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
832 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
834 static inline void *hci_get_drvdata(struct hci_dev *hdev)
836 return dev_get_drvdata(&hdev->dev);
839 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
841 dev_set_drvdata(&hdev->dev, data);
844 struct hci_dev *hci_dev_get(int index);
845 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
847 struct hci_dev *hci_alloc_dev(void);
848 void hci_free_dev(struct hci_dev *hdev);
849 int hci_register_dev(struct hci_dev *hdev);
850 void hci_unregister_dev(struct hci_dev *hdev);
851 int hci_suspend_dev(struct hci_dev *hdev);
852 int hci_resume_dev(struct hci_dev *hdev);
853 int hci_dev_open(__u16 dev);
854 int hci_dev_close(__u16 dev);
855 int hci_dev_reset(__u16 dev);
856 int hci_dev_reset_stat(__u16 dev);
857 int hci_dev_cmd(unsigned int cmd, void __user *arg);
858 int hci_get_dev_list(void __user *arg);
859 int hci_get_dev_info(void __user *arg);
860 int hci_get_conn_list(void __user *arg);
861 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
862 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
863 int hci_inquiry(void __user *arg);
865 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
866 bdaddr_t *bdaddr, u8 type);
867 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
868 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
869 void hci_bdaddr_list_clear(struct list_head *list);
871 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
872 bdaddr_t *addr, u8 addr_type);
873 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
874 bdaddr_t *addr, u8 addr_type);
875 int hci_conn_params_set(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
877 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
878 void hci_conn_params_clear_all(struct hci_dev *hdev);
879 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
881 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
885 void hci_update_background_scan(struct hci_dev *hdev);
887 void hci_uuids_clear(struct hci_dev *hdev);
889 void hci_link_keys_clear(struct hci_dev *hdev);
890 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
891 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
892 bdaddr_t *bdaddr, u8 *val, u8 type,
893 u8 pin_len, bool *persistent);
894 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, __le64 rand,
896 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
897 u8 addr_type, u8 type, u8 authenticated,
898 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
899 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
900 u8 addr_type, u8 role);
901 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
902 void hci_smp_ltks_clear(struct hci_dev *hdev);
903 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
905 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
906 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
908 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
909 u8 addr_type, u8 val[16], bdaddr_t *rpa);
910 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
911 void hci_smp_irks_clear(struct hci_dev *hdev);
913 void hci_remote_oob_data_clear(struct hci_dev *hdev);
914 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
916 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
917 u8 *hash, u8 *randomizer);
918 int hci_add_remote_oob_ext_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
919 u8 *hash192, u8 *randomizer192,
920 u8 *hash256, u8 *randomizer256);
921 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
923 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
925 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
926 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
927 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
929 void hci_init_sysfs(struct hci_dev *hdev);
930 void hci_conn_init_sysfs(struct hci_conn *conn);
931 void hci_conn_add_sysfs(struct hci_conn *conn);
932 void hci_conn_del_sysfs(struct hci_conn *conn);
934 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
936 /* ----- LMP capabilities ----- */
937 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT)
938 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH)
939 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD)
940 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF)
941 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK)
942 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ)
943 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO)
944 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR))
945 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE)
946 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
947 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
948 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ)
949 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
950 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
951 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH)
952 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO)
953 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
954 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES)
955 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT)
957 /* ----- Extended LMP capabilities ----- */
958 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
959 #define lmp_csb_slave_capable(dev) ((dev)->features[2][0] & LMP_CSB_SLAVE)
960 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
961 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN)
962 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC)
963 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING)
965 /* ----- Host capabilities ----- */
966 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP)
967 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC)
968 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE))
969 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
971 /* ----- HCI protocols ----- */
972 #define HCI_PROTO_DEFER 0x01
974 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
975 __u8 type, __u8 *flags)
979 return l2cap_connect_ind(hdev, bdaddr);
983 return sco_connect_ind(hdev, bdaddr, flags);
986 BT_ERR("unknown link type %d", type);
991 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
993 switch (conn->type) {
996 l2cap_connect_cfm(conn, status);
1001 sco_connect_cfm(conn, status);
1005 BT_ERR("unknown link type %d", conn->type);
1009 if (conn->connect_cfm_cb)
1010 conn->connect_cfm_cb(conn, status);
1013 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1015 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1016 return HCI_ERROR_REMOTE_USER_TERM;
1018 return l2cap_disconn_ind(conn);
1021 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
1023 switch (conn->type) {
1026 l2cap_disconn_cfm(conn, reason);
1031 sco_disconn_cfm(conn, reason);
1034 /* L2CAP would be handled for BREDR chan */
1039 BT_ERR("unknown link type %d", conn->type);
1043 if (conn->disconn_cfm_cb)
1044 conn->disconn_cfm_cb(conn, reason);
1047 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
1051 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1054 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1057 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1058 l2cap_security_cfm(conn, status, encrypt);
1060 if (conn->security_cfm_cb)
1061 conn->security_cfm_cb(conn, status);
1064 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
1067 if (conn->type != ACL_LINK && conn->type != LE_LINK)
1070 l2cap_security_cfm(conn, status, encrypt);
1072 if (conn->security_cfm_cb)
1073 conn->security_cfm_cb(conn, status);
1076 /* ----- HCI callbacks ----- */
1078 struct list_head list;
1082 void (*security_cfm) (struct hci_conn *conn, __u8 status,
1084 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
1085 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1088 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1093 hci_proto_auth_cfm(conn, status);
1095 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1098 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1100 read_lock(&hci_cb_list_lock);
1101 list_for_each_entry(cb, &hci_cb_list, list) {
1102 if (cb->security_cfm)
1103 cb->security_cfm(conn, status, encrypt);
1105 read_unlock(&hci_cb_list_lock);
1108 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1113 if (conn->sec_level == BT_SECURITY_SDP)
1114 conn->sec_level = BT_SECURITY_LOW;
1116 if (conn->pending_sec_level > conn->sec_level)
1117 conn->sec_level = conn->pending_sec_level;
1119 hci_proto_encrypt_cfm(conn, status, encrypt);
1121 read_lock(&hci_cb_list_lock);
1122 list_for_each_entry(cb, &hci_cb_list, list) {
1123 if (cb->security_cfm)
1124 cb->security_cfm(conn, status, encrypt);
1126 read_unlock(&hci_cb_list_lock);
1129 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1133 read_lock(&hci_cb_list_lock);
1134 list_for_each_entry(cb, &hci_cb_list, list) {
1135 if (cb->key_change_cfm)
1136 cb->key_change_cfm(conn, status);
1138 read_unlock(&hci_cb_list_lock);
1141 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1146 read_lock(&hci_cb_list_lock);
1147 list_for_each_entry(cb, &hci_cb_list, list) {
1148 if (cb->role_switch_cfm)
1149 cb->role_switch_cfm(conn, status, role);
1151 read_unlock(&hci_cb_list_lock);
1154 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
1161 while (parsed < data_len - 1) {
1162 u8 field_len = data[0];
1167 parsed += field_len + 1;
1169 if (parsed > data_len)
1172 if (data[1] == type)
1175 data += field_len + 1;
1181 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1183 if (addr_type != ADDR_LE_DEV_RANDOM)
1186 if ((bdaddr->b[5] & 0xc0) == 0x40)
1192 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1194 if (addr_type == ADDR_LE_DEV_PUBLIC)
1197 /* Check for Random Static address type */
1198 if ((addr->b[5] & 0xc0) == 0xc0)
1204 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1205 bdaddr_t *bdaddr, u8 addr_type)
1207 if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1210 return hci_find_irk_by_rpa(hdev, bdaddr);
1213 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1218 if (min > max || min < 6 || max > 3200)
1221 if (to_multiplier < 10 || to_multiplier > 3200)
1224 if (max >= to_multiplier * 8)
1227 max_latency = (to_multiplier * 8 / max) - 1;
1228 if (latency > 499 || latency > max_latency)
1234 int hci_register_cb(struct hci_cb *hcb);
1235 int hci_unregister_cb(struct hci_cb *hcb);
1237 struct hci_request {
1238 struct hci_dev *hdev;
1239 struct sk_buff_head cmd_q;
1241 /* If something goes wrong when building the HCI request, the error
1242 * value is stored in this field.
1247 void hci_req_init(struct hci_request *req, struct hci_dev *hdev);
1248 int hci_req_run(struct hci_request *req, hci_req_complete_t complete);
1249 void hci_req_add(struct hci_request *req, u16 opcode, u32 plen,
1251 void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen,
1252 const void *param, u8 event);
1253 void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
1254 bool hci_req_pending(struct hci_dev *hdev);
1256 void hci_req_add_le_scan_disable(struct hci_request *req);
1257 void hci_req_add_le_passive_scan(struct hci_request *req);
1259 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1260 const void *param, u32 timeout);
1261 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1262 const void *param, u8 event, u32 timeout);
1264 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1266 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1267 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1269 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1271 /* ----- HCI Sockets ----- */
1272 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1273 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1274 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1276 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1278 /* Management interface */
1279 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR))
1280 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \
1281 BIT(BDADDR_LE_RANDOM))
1282 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \
1283 BIT(BDADDR_LE_PUBLIC) | \
1284 BIT(BDADDR_LE_RANDOM))
1286 /* These LE scan and inquiry parameters were chosen according to LE General
1287 * Discovery Procedure specification.
1289 #define DISCOV_LE_SCAN_WIN 0x12
1290 #define DISCOV_LE_SCAN_INT 0x12
1291 #define DISCOV_LE_TIMEOUT 10240 /* msec */
1292 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */
1293 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04
1294 #define DISCOV_BREDR_INQUIRY_LEN 0x08
1296 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1297 int mgmt_new_settings(struct hci_dev *hdev);
1298 void mgmt_index_added(struct hci_dev *hdev);
1299 void mgmt_index_removed(struct hci_dev *hdev);
1300 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1301 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1302 int mgmt_update_adv_data(struct hci_dev *hdev);
1303 void mgmt_discoverable_timeout(struct hci_dev *hdev);
1304 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1306 void mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1307 u8 addr_type, u32 flags, u8 *name, u8 name_len,
1309 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1310 u8 link_type, u8 addr_type, u8 reason,
1311 bool mgmt_connected);
1312 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1313 u8 link_type, u8 addr_type, u8 status);
1314 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1315 u8 addr_type, u8 status);
1316 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1317 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1319 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1321 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1322 u8 link_type, u8 addr_type, u32 value,
1324 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1325 u8 link_type, u8 addr_type, u8 status);
1326 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1327 u8 link_type, u8 addr_type, u8 status);
1328 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1329 u8 link_type, u8 addr_type);
1330 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1331 u8 link_type, u8 addr_type, u8 status);
1332 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1333 u8 link_type, u8 addr_type, u8 status);
1334 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1335 u8 link_type, u8 addr_type, u32 passkey,
1337 void mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1338 u8 addr_type, u8 status);
1339 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1340 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1341 void mgmt_sc_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1342 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1344 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1345 void mgmt_read_local_oob_data_complete(struct hci_dev *hdev, u8 *hash192,
1346 u8 *randomizer192, u8 *hash256,
1347 u8 *randomizer256, u8 status);
1348 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1349 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1350 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1351 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1352 u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1353 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1354 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1355 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk);
1356 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1358 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1359 u8 bdaddr_type, u8 store_hint, u16 min_interval,
1360 u16 max_interval, u16 latency, u16 timeout);
1361 void mgmt_reenable_advertising(struct hci_dev *hdev);
1362 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1364 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1366 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1369 int hci_update_random_address(struct hci_request *req, bool require_privacy,
1371 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1374 #define SCO_AIRMODE_MASK 0x0003
1375 #define SCO_AIRMODE_CVSD 0x0000
1376 #define SCO_AIRMODE_TRANSP 0x0003
1378 #endif /* __HCI_CORE_H */