2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (C) 2000-2001 Qualcomm Incorporated
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>
30 /* HCI upper protocols */
31 #define HCI_PROTO_L2CAP 0
32 #define HCI_PROTO_SCO 1
34 /* HCI Core structures */
38 __u8 pscan_period_mode
;
45 struct inquiry_entry
{
46 struct inquiry_entry
*next
;
48 struct inquiry_data data
;
51 struct inquiry_cache
{
54 struct inquiry_entry
*list
;
57 struct hci_conn_hash
{
58 struct list_head list
;
65 struct list_head list
;
89 __u16 sniff_min_interval
;
90 __u16 sniff_max_interval
;
100 unsigned int acl_pkts
;
101 unsigned int sco_pkts
;
103 unsigned long cmd_last_tx
;
104 unsigned long acl_last_tx
;
105 unsigned long sco_last_tx
;
107 struct tasklet_struct cmd_task
;
108 struct tasklet_struct rx_task
;
109 struct tasklet_struct tx_task
;
111 struct sk_buff_head rx_q
;
112 struct sk_buff_head raw_q
;
113 struct sk_buff_head cmd_q
;
115 struct sk_buff
*sent_cmd
;
116 struct sk_buff
*reassembly
[3];
118 struct semaphore req_lock
;
119 wait_queue_head_t req_wait_q
;
123 struct inquiry_cache inq_cache
;
124 struct hci_conn_hash conn_hash
;
126 struct hci_dev_stats stat
;
128 struct sk_buff_head driver_init
;
135 struct device
*parent
;
138 struct module
*owner
;
140 int (*open
)(struct hci_dev
*hdev
);
141 int (*close
)(struct hci_dev
*hdev
);
142 int (*flush
)(struct hci_dev
*hdev
);
143 int (*send
)(struct sk_buff
*skb
);
144 void (*destruct
)(struct hci_dev
*hdev
);
145 void (*notify
)(struct hci_dev
*hdev
, unsigned int evt
);
146 int (*ioctl
)(struct hci_dev
*hdev
, unsigned int cmd
, unsigned long arg
);
150 struct list_head list
;
172 struct sk_buff_head data_q
;
174 struct timer_list disc_timer
;
175 struct timer_list idle_timer
;
177 struct work_struct work
;
181 struct hci_dev
*hdev
;
186 struct hci_conn
*link
;
189 extern struct hci_proto
*hci_proto
[];
190 extern struct list_head hci_dev_list
;
191 extern struct list_head hci_cb_list
;
192 extern rwlock_t hci_dev_list_lock
;
193 extern rwlock_t hci_cb_list_lock
;
195 /* ----- Inquiry cache ----- */
196 #define INQUIRY_CACHE_AGE_MAX (HZ*30) // 30 seconds
197 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) // 60 seconds
199 #define inquiry_cache_lock(c) spin_lock(&c->lock)
200 #define inquiry_cache_unlock(c) spin_unlock(&c->lock)
201 #define inquiry_cache_lock_bh(c) spin_lock_bh(&c->lock)
202 #define inquiry_cache_unlock_bh(c) spin_unlock_bh(&c->lock)
204 static inline void inquiry_cache_init(struct hci_dev
*hdev
)
206 struct inquiry_cache
*c
= &hdev
->inq_cache
;
207 spin_lock_init(&c
->lock
);
211 static inline int inquiry_cache_empty(struct hci_dev
*hdev
)
213 struct inquiry_cache
*c
= &hdev
->inq_cache
;
214 return (c
->list
== NULL
);
217 static inline long inquiry_cache_age(struct hci_dev
*hdev
)
219 struct inquiry_cache
*c
= &hdev
->inq_cache
;
220 return jiffies
- c
->timestamp
;
223 static inline long inquiry_entry_age(struct inquiry_entry
*e
)
225 return jiffies
- e
->timestamp
;
228 struct inquiry_entry
*hci_inquiry_cache_lookup(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
);
229 void hci_inquiry_cache_update(struct hci_dev
*hdev
, struct inquiry_data
*data
);
231 /* ----- HCI Connections ----- */
234 HCI_CONN_ENCRYPT_PEND
,
235 HCI_CONN_RSWITCH_PEND
,
236 HCI_CONN_MODE_CHANGE_PEND
,
239 static inline void hci_conn_hash_init(struct hci_dev
*hdev
)
241 struct hci_conn_hash
*h
= &hdev
->conn_hash
;
242 INIT_LIST_HEAD(&h
->list
);
243 spin_lock_init(&h
->lock
);
248 static inline void hci_conn_hash_add(struct hci_dev
*hdev
, struct hci_conn
*c
)
250 struct hci_conn_hash
*h
= &hdev
->conn_hash
;
251 list_add(&c
->list
, &h
->list
);
252 if (c
->type
== ACL_LINK
)
258 static inline void hci_conn_hash_del(struct hci_dev
*hdev
, struct hci_conn
*c
)
260 struct hci_conn_hash
*h
= &hdev
->conn_hash
;
262 if (c
->type
== ACL_LINK
)
268 static inline struct hci_conn
*hci_conn_hash_lookup_handle(struct hci_dev
*hdev
,
271 struct hci_conn_hash
*h
= &hdev
->conn_hash
;
275 list_for_each(p
, &h
->list
) {
276 c
= list_entry(p
, struct hci_conn
, list
);
277 if (c
->handle
== handle
)
283 static inline struct hci_conn
*hci_conn_hash_lookup_ba(struct hci_dev
*hdev
,
284 __u8 type
, bdaddr_t
*ba
)
286 struct hci_conn_hash
*h
= &hdev
->conn_hash
;
290 list_for_each(p
, &h
->list
) {
291 c
= list_entry(p
, struct hci_conn
, list
);
292 if (c
->type
== type
&& !bacmp(&c
->dst
, ba
))
298 static inline struct hci_conn
*hci_conn_hash_lookup_state(struct hci_dev
*hdev
,
299 __u8 type
, __u16 state
)
301 struct hci_conn_hash
*h
= &hdev
->conn_hash
;
305 list_for_each(p
, &h
->list
) {
306 c
= list_entry(p
, struct hci_conn
, list
);
307 if (c
->type
== type
&& c
->state
== state
)
313 void hci_acl_connect(struct hci_conn
*conn
);
314 void hci_acl_disconn(struct hci_conn
*conn
, __u8 reason
);
315 void hci_add_sco(struct hci_conn
*conn
, __u16 handle
);
316 void hci_setup_sync(struct hci_conn
*conn
, __u16 handle
);
318 struct hci_conn
*hci_conn_add(struct hci_dev
*hdev
, int type
, bdaddr_t
*dst
);
319 int hci_conn_del(struct hci_conn
*conn
);
320 void hci_conn_hash_flush(struct hci_dev
*hdev
);
321 void hci_conn_check_pending(struct hci_dev
*hdev
);
323 struct hci_conn
*hci_connect(struct hci_dev
*hdev
, int type
, bdaddr_t
*src
);
324 int hci_conn_auth(struct hci_conn
*conn
);
325 int hci_conn_encrypt(struct hci_conn
*conn
);
326 int hci_conn_change_link_key(struct hci_conn
*conn
);
327 int hci_conn_switch_role(struct hci_conn
*conn
, uint8_t role
);
329 void hci_conn_enter_active_mode(struct hci_conn
*conn
);
330 void hci_conn_enter_sniff_mode(struct hci_conn
*conn
);
332 static inline void hci_conn_hold(struct hci_conn
*conn
)
334 atomic_inc(&conn
->refcnt
);
335 del_timer(&conn
->disc_timer
);
338 static inline void hci_conn_put(struct hci_conn
*conn
)
340 if (atomic_dec_and_test(&conn
->refcnt
)) {
342 if (conn
->type
== ACL_LINK
) {
343 del_timer(&conn
->idle_timer
);
344 if (conn
->state
== BT_CONNECTED
) {
345 timeo
= msecs_to_jiffies(HCI_DISCONN_TIMEOUT
);
349 timeo
= msecs_to_jiffies(10);
351 timeo
= msecs_to_jiffies(10);
352 mod_timer(&conn
->disc_timer
, jiffies
+ timeo
);
356 /* ----- HCI tasks ----- */
357 static inline void hci_sched_cmd(struct hci_dev
*hdev
)
359 tasklet_schedule(&hdev
->cmd_task
);
362 static inline void hci_sched_rx(struct hci_dev
*hdev
)
364 tasklet_schedule(&hdev
->rx_task
);
367 static inline void hci_sched_tx(struct hci_dev
*hdev
)
369 tasklet_schedule(&hdev
->tx_task
);
372 /* ----- HCI Devices ----- */
373 static inline void __hci_dev_put(struct hci_dev
*d
)
375 if (atomic_dec_and_test(&d
->refcnt
))
379 static inline void hci_dev_put(struct hci_dev
*d
)
382 module_put(d
->owner
);
385 static inline struct hci_dev
*__hci_dev_hold(struct hci_dev
*d
)
387 atomic_inc(&d
->refcnt
);
391 static inline struct hci_dev
*hci_dev_hold(struct hci_dev
*d
)
393 if (try_module_get(d
->owner
))
394 return __hci_dev_hold(d
);
398 #define hci_dev_lock(d) spin_lock(&d->lock)
399 #define hci_dev_unlock(d) spin_unlock(&d->lock)
400 #define hci_dev_lock_bh(d) spin_lock_bh(&d->lock)
401 #define hci_dev_unlock_bh(d) spin_unlock_bh(&d->lock)
403 struct hci_dev
*hci_dev_get(int index
);
404 struct hci_dev
*hci_get_route(bdaddr_t
*src
, bdaddr_t
*dst
);
406 struct hci_dev
*hci_alloc_dev(void);
407 void hci_free_dev(struct hci_dev
*hdev
);
408 int hci_register_dev(struct hci_dev
*hdev
);
409 int hci_unregister_dev(struct hci_dev
*hdev
);
410 int hci_suspend_dev(struct hci_dev
*hdev
);
411 int hci_resume_dev(struct hci_dev
*hdev
);
412 int hci_dev_open(__u16 dev
);
413 int hci_dev_close(__u16 dev
);
414 int hci_dev_reset(__u16 dev
);
415 int hci_dev_reset_stat(__u16 dev
);
416 int hci_dev_cmd(unsigned int cmd
, void __user
*arg
);
417 int hci_get_dev_list(void __user
*arg
);
418 int hci_get_dev_info(void __user
*arg
);
419 int hci_get_conn_list(void __user
*arg
);
420 int hci_get_conn_info(struct hci_dev
*hdev
, void __user
*arg
);
421 int hci_inquiry(void __user
*arg
);
423 void hci_event_packet(struct hci_dev
*hdev
, struct sk_buff
*skb
);
425 /* Receive frame from HCI drivers */
426 static inline int hci_recv_frame(struct sk_buff
*skb
)
428 struct hci_dev
*hdev
= (struct hci_dev
*) skb
->dev
;
429 if (!hdev
|| (!test_bit(HCI_UP
, &hdev
->flags
)
430 && !test_bit(HCI_INIT
, &hdev
->flags
))) {
436 bt_cb(skb
)->incoming
= 1;
439 __net_timestamp(skb
);
441 /* Queue frame for rx task */
442 skb_queue_tail(&hdev
->rx_q
, skb
);
447 int hci_recv_fragment(struct hci_dev
*hdev
, int type
, void *data
, int count
);
449 int hci_register_sysfs(struct hci_dev
*hdev
);
450 void hci_unregister_sysfs(struct hci_dev
*hdev
);
451 void hci_conn_add_sysfs(struct hci_conn
*conn
);
452 void hci_conn_del_sysfs(struct hci_conn
*conn
);
454 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
456 /* ----- LMP capabilities ----- */
457 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
458 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
459 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
460 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
461 #define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO)
463 /* ----- HCI protocols ----- */
471 int (*connect_ind
) (struct hci_dev
*hdev
, bdaddr_t
*bdaddr
, __u8 type
);
472 int (*connect_cfm
) (struct hci_conn
*conn
, __u8 status
);
473 int (*disconn_ind
) (struct hci_conn
*conn
, __u8 reason
);
474 int (*recv_acldata
) (struct hci_conn
*conn
, struct sk_buff
*skb
, __u16 flags
);
475 int (*recv_scodata
) (struct hci_conn
*conn
, struct sk_buff
*skb
);
476 int (*auth_cfm
) (struct hci_conn
*conn
, __u8 status
);
477 int (*encrypt_cfm
) (struct hci_conn
*conn
, __u8 status
);
480 static inline int hci_proto_connect_ind(struct hci_dev
*hdev
, bdaddr_t
*bdaddr
, __u8 type
)
482 register struct hci_proto
*hp
;
485 hp
= hci_proto
[HCI_PROTO_L2CAP
];
486 if (hp
&& hp
->connect_ind
)
487 mask
|= hp
->connect_ind(hdev
, bdaddr
, type
);
489 hp
= hci_proto
[HCI_PROTO_SCO
];
490 if (hp
&& hp
->connect_ind
)
491 mask
|= hp
->connect_ind(hdev
, bdaddr
, type
);
496 static inline void hci_proto_connect_cfm(struct hci_conn
*conn
, __u8 status
)
498 register struct hci_proto
*hp
;
500 hp
= hci_proto
[HCI_PROTO_L2CAP
];
501 if (hp
&& hp
->connect_cfm
)
502 hp
->connect_cfm(conn
, status
);
504 hp
= hci_proto
[HCI_PROTO_SCO
];
505 if (hp
&& hp
->connect_cfm
)
506 hp
->connect_cfm(conn
, status
);
509 static inline void hci_proto_disconn_ind(struct hci_conn
*conn
, __u8 reason
)
511 register struct hci_proto
*hp
;
513 hp
= hci_proto
[HCI_PROTO_L2CAP
];
514 if (hp
&& hp
->disconn_ind
)
515 hp
->disconn_ind(conn
, reason
);
517 hp
= hci_proto
[HCI_PROTO_SCO
];
518 if (hp
&& hp
->disconn_ind
)
519 hp
->disconn_ind(conn
, reason
);
522 static inline void hci_proto_auth_cfm(struct hci_conn
*conn
, __u8 status
)
524 register struct hci_proto
*hp
;
526 hp
= hci_proto
[HCI_PROTO_L2CAP
];
527 if (hp
&& hp
->auth_cfm
)
528 hp
->auth_cfm(conn
, status
);
530 hp
= hci_proto
[HCI_PROTO_SCO
];
531 if (hp
&& hp
->auth_cfm
)
532 hp
->auth_cfm(conn
, status
);
535 static inline void hci_proto_encrypt_cfm(struct hci_conn
*conn
, __u8 status
)
537 register struct hci_proto
*hp
;
539 hp
= hci_proto
[HCI_PROTO_L2CAP
];
540 if (hp
&& hp
->encrypt_cfm
)
541 hp
->encrypt_cfm(conn
, status
);
543 hp
= hci_proto
[HCI_PROTO_SCO
];
544 if (hp
&& hp
->encrypt_cfm
)
545 hp
->encrypt_cfm(conn
, status
);
548 int hci_register_proto(struct hci_proto
*hproto
);
549 int hci_unregister_proto(struct hci_proto
*hproto
);
551 /* ----- HCI callbacks ----- */
553 struct list_head list
;
557 void (*auth_cfm
) (struct hci_conn
*conn
, __u8 status
);
558 void (*encrypt_cfm
) (struct hci_conn
*conn
, __u8 status
, __u8 encrypt
);
559 void (*key_change_cfm
) (struct hci_conn
*conn
, __u8 status
);
560 void (*role_switch_cfm
) (struct hci_conn
*conn
, __u8 status
, __u8 role
);
563 static inline void hci_auth_cfm(struct hci_conn
*conn
, __u8 status
)
567 hci_proto_auth_cfm(conn
, status
);
569 read_lock_bh(&hci_cb_list_lock
);
570 list_for_each(p
, &hci_cb_list
) {
571 struct hci_cb
*cb
= list_entry(p
, struct hci_cb
, list
);
573 cb
->auth_cfm(conn
, status
);
575 read_unlock_bh(&hci_cb_list_lock
);
578 static inline void hci_encrypt_cfm(struct hci_conn
*conn
, __u8 status
, __u8 encrypt
)
582 hci_proto_encrypt_cfm(conn
, status
);
584 read_lock_bh(&hci_cb_list_lock
);
585 list_for_each(p
, &hci_cb_list
) {
586 struct hci_cb
*cb
= list_entry(p
, struct hci_cb
, list
);
588 cb
->encrypt_cfm(conn
, status
, encrypt
);
590 read_unlock_bh(&hci_cb_list_lock
);
593 static inline void hci_key_change_cfm(struct hci_conn
*conn
, __u8 status
)
597 read_lock_bh(&hci_cb_list_lock
);
598 list_for_each(p
, &hci_cb_list
) {
599 struct hci_cb
*cb
= list_entry(p
, struct hci_cb
, list
);
600 if (cb
->key_change_cfm
)
601 cb
->key_change_cfm(conn
, status
);
603 read_unlock_bh(&hci_cb_list_lock
);
606 static inline void hci_role_switch_cfm(struct hci_conn
*conn
, __u8 status
, __u8 role
)
610 read_lock_bh(&hci_cb_list_lock
);
611 list_for_each(p
, &hci_cb_list
) {
612 struct hci_cb
*cb
= list_entry(p
, struct hci_cb
, list
);
613 if (cb
->role_switch_cfm
)
614 cb
->role_switch_cfm(conn
, status
, role
);
616 read_unlock_bh(&hci_cb_list_lock
);
619 int hci_register_cb(struct hci_cb
*hcb
);
620 int hci_unregister_cb(struct hci_cb
*hcb
);
622 int hci_register_notifier(struct notifier_block
*nb
);
623 int hci_unregister_notifier(struct notifier_block
*nb
);
625 int hci_send_cmd(struct hci_dev
*hdev
, __u16 opcode
, __u32 plen
, void *param
);
626 int hci_send_acl(struct hci_conn
*conn
, struct sk_buff
*skb
, __u16 flags
);
627 int hci_send_sco(struct hci_conn
*conn
, struct sk_buff
*skb
);
629 void *hci_sent_cmd_data(struct hci_dev
*hdev
, __u16 opcode
);
631 void hci_si_event(struct hci_dev
*hdev
, int type
, int dlen
, void *data
);
633 /* ----- HCI Sockets ----- */
634 void hci_send_to_sock(struct hci_dev
*hdev
, struct sk_buff
*skb
);
636 /* HCI info for socket */
637 #define hci_pi(sk) ((struct hci_pinfo *) sk)
641 struct hci_dev
*hdev
;
642 struct hci_filter filter
;
646 /* HCI security filter */
647 #define HCI_SFLT_MAX_OGF 5
649 struct hci_sec_filter
{
652 __u32 ocf_mask
[HCI_SFLT_MAX_OGF
+ 1][4];
655 /* ----- HCI requests ----- */
656 #define HCI_REQ_DONE 0
657 #define HCI_REQ_PEND 1
658 #define HCI_REQ_CANCELED 2
660 #define hci_req_lock(d) down(&d->req_lock)
661 #define hci_req_unlock(d) up(&d->req_lock)
663 void hci_req_complete(struct hci_dev
*hdev
, int result
);
665 #endif /* __HCI_CORE_H */