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;
46 struct inquiry_entry {
47 struct inquiry_entry *next;
49 struct inquiry_data data;
52 struct inquiry_cache {
55 struct inquiry_entry *list;
58 struct hci_conn_hash {
59 struct list_head list;
66 struct list_head list;
92 __u16 sniff_min_interval;
93 __u16 sniff_max_interval;
101 unsigned int acl_mtu;
102 unsigned int sco_mtu;
103 unsigned int acl_pkts;
104 unsigned int sco_pkts;
106 unsigned long cmd_last_tx;
107 unsigned long acl_last_tx;
108 unsigned long sco_last_tx;
110 struct tasklet_struct cmd_task;
111 struct tasklet_struct rx_task;
112 struct tasklet_struct tx_task;
114 struct sk_buff_head rx_q;
115 struct sk_buff_head raw_q;
116 struct sk_buff_head cmd_q;
118 struct sk_buff *sent_cmd;
119 struct sk_buff *reassembly[3];
121 struct mutex req_lock;
122 wait_queue_head_t req_wait_q;
126 struct inquiry_cache inq_cache;
127 struct hci_conn_hash conn_hash;
129 struct hci_dev_stats stat;
131 struct sk_buff_head driver_init;
138 struct dentry *debugfs;
140 struct device *parent;
143 struct rfkill *rfkill;
145 struct module *owner;
147 int (*open)(struct hci_dev *hdev);
148 int (*close)(struct hci_dev *hdev);
149 int (*flush)(struct hci_dev *hdev);
150 int (*send)(struct sk_buff *skb);
151 void (*destruct)(struct hci_dev *hdev);
152 void (*notify)(struct hci_dev *hdev, unsigned int evt);
153 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
157 struct list_head list;
184 struct sk_buff_head data_q;
186 struct timer_list disc_timer;
187 struct timer_list idle_timer;
189 struct work_struct work_add;
190 struct work_struct work_del;
195 struct hci_dev *hdev;
200 struct hci_conn *link;
203 extern struct hci_proto *hci_proto[];
204 extern struct list_head hci_dev_list;
205 extern struct list_head hci_cb_list;
206 extern rwlock_t hci_dev_list_lock;
207 extern rwlock_t hci_cb_list_lock;
209 /* ----- Inquiry cache ----- */
210 #define INQUIRY_CACHE_AGE_MAX (HZ*30) // 30 seconds
211 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) // 60 seconds
213 #define inquiry_cache_lock(c) spin_lock(&c->lock)
214 #define inquiry_cache_unlock(c) spin_unlock(&c->lock)
215 #define inquiry_cache_lock_bh(c) spin_lock_bh(&c->lock)
216 #define inquiry_cache_unlock_bh(c) spin_unlock_bh(&c->lock)
218 static inline void inquiry_cache_init(struct hci_dev *hdev)
220 struct inquiry_cache *c = &hdev->inq_cache;
221 spin_lock_init(&c->lock);
225 static inline int inquiry_cache_empty(struct hci_dev *hdev)
227 struct inquiry_cache *c = &hdev->inq_cache;
228 return (c->list == NULL);
231 static inline long inquiry_cache_age(struct hci_dev *hdev)
233 struct inquiry_cache *c = &hdev->inq_cache;
234 return jiffies - c->timestamp;
237 static inline long inquiry_entry_age(struct inquiry_entry *e)
239 return jiffies - e->timestamp;
242 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
243 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
245 /* ----- HCI Connections ----- */
248 HCI_CONN_ENCRYPT_PEND,
249 HCI_CONN_RSWITCH_PEND,
250 HCI_CONN_MODE_CHANGE_PEND,
253 static inline void hci_conn_hash_init(struct hci_dev *hdev)
255 struct hci_conn_hash *h = &hdev->conn_hash;
256 INIT_LIST_HEAD(&h->list);
257 spin_lock_init(&h->lock);
262 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
264 struct hci_conn_hash *h = &hdev->conn_hash;
265 list_add(&c->list, &h->list);
266 if (c->type == ACL_LINK)
272 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
274 struct hci_conn_hash *h = &hdev->conn_hash;
276 if (c->type == ACL_LINK)
282 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
285 struct hci_conn_hash *h = &hdev->conn_hash;
289 list_for_each(p, &h->list) {
290 c = list_entry(p, struct hci_conn, list);
291 if (c->handle == handle)
297 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
298 __u8 type, bdaddr_t *ba)
300 struct hci_conn_hash *h = &hdev->conn_hash;
304 list_for_each(p, &h->list) {
305 c = list_entry(p, struct hci_conn, list);
306 if (c->type == type && !bacmp(&c->dst, ba))
312 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
313 __u8 type, __u16 state)
315 struct hci_conn_hash *h = &hdev->conn_hash;
319 list_for_each(p, &h->list) {
320 c = list_entry(p, struct hci_conn, list);
321 if (c->type == type && c->state == state)
327 void hci_acl_connect(struct hci_conn *conn);
328 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
329 void hci_add_sco(struct hci_conn *conn, __u16 handle);
330 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
332 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
333 int hci_conn_del(struct hci_conn *conn);
334 void hci_conn_hash_flush(struct hci_dev *hdev);
335 void hci_conn_check_pending(struct hci_dev *hdev);
337 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8 sec_level, __u8 auth_type);
338 int hci_conn_check_link_mode(struct hci_conn *conn);
339 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
340 int hci_conn_change_link_key(struct hci_conn *conn);
341 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
343 void hci_conn_enter_active_mode(struct hci_conn *conn);
344 void hci_conn_enter_sniff_mode(struct hci_conn *conn);
346 void hci_conn_hold_device(struct hci_conn *conn);
347 void hci_conn_put_device(struct hci_conn *conn);
349 static inline void hci_conn_hold(struct hci_conn *conn)
351 atomic_inc(&conn->refcnt);
352 del_timer(&conn->disc_timer);
355 static inline void hci_conn_put(struct hci_conn *conn)
357 if (atomic_dec_and_test(&conn->refcnt)) {
359 if (conn->type == ACL_LINK) {
360 del_timer(&conn->idle_timer);
361 if (conn->state == BT_CONNECTED) {
362 timeo = msecs_to_jiffies(conn->disc_timeout);
366 timeo = msecs_to_jiffies(10);
368 timeo = msecs_to_jiffies(10);
369 mod_timer(&conn->disc_timer, jiffies + timeo);
373 /* ----- HCI Devices ----- */
374 static inline void __hci_dev_put(struct hci_dev *d)
376 if (atomic_dec_and_test(&d->refcnt))
380 static inline void hci_dev_put(struct hci_dev *d)
383 module_put(d->owner);
386 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
388 atomic_inc(&d->refcnt);
392 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
394 if (try_module_get(d->owner))
395 return __hci_dev_hold(d);
399 #define hci_dev_lock(d) spin_lock(&d->lock)
400 #define hci_dev_unlock(d) spin_unlock(&d->lock)
401 #define hci_dev_lock_bh(d) spin_lock_bh(&d->lock)
402 #define hci_dev_unlock_bh(d) spin_unlock_bh(&d->lock)
404 struct hci_dev *hci_dev_get(int index);
405 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
407 struct hci_dev *hci_alloc_dev(void);
408 void hci_free_dev(struct hci_dev *hdev);
409 int hci_register_dev(struct hci_dev *hdev);
410 int hci_unregister_dev(struct hci_dev *hdev);
411 int hci_suspend_dev(struct hci_dev *hdev);
412 int hci_resume_dev(struct hci_dev *hdev);
413 int hci_dev_open(__u16 dev);
414 int hci_dev_close(__u16 dev);
415 int hci_dev_reset(__u16 dev);
416 int hci_dev_reset_stat(__u16 dev);
417 int hci_dev_cmd(unsigned int cmd, void __user *arg);
418 int hci_get_dev_list(void __user *arg);
419 int hci_get_dev_info(void __user *arg);
420 int hci_get_conn_list(void __user *arg);
421 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
422 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
423 int hci_inquiry(void __user *arg);
425 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
427 int hci_recv_frame(struct sk_buff *skb);
428 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
430 int hci_register_sysfs(struct hci_dev *hdev);
431 void hci_unregister_sysfs(struct hci_dev *hdev);
432 void hci_conn_init_sysfs(struct hci_conn *conn);
433 void hci_conn_add_sysfs(struct hci_conn *conn);
434 void hci_conn_del_sysfs(struct hci_conn *conn);
436 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
438 /* ----- LMP capabilities ----- */
439 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
440 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
441 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
442 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
443 #define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO)
444 #define lmp_ssp_capable(dev) ((dev)->features[6] & LMP_SIMPLE_PAIR)
446 /* ----- HCI protocols ----- */
454 int (*connect_ind) (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
455 int (*connect_cfm) (struct hci_conn *conn, __u8 status);
456 int (*disconn_ind) (struct hci_conn *conn);
457 int (*disconn_cfm) (struct hci_conn *conn, __u8 reason);
458 int (*recv_acldata) (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
459 int (*recv_scodata) (struct hci_conn *conn, struct sk_buff *skb);
460 int (*security_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
463 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
465 register struct hci_proto *hp;
468 hp = hci_proto[HCI_PROTO_L2CAP];
469 if (hp && hp->connect_ind)
470 mask |= hp->connect_ind(hdev, bdaddr, type);
472 hp = hci_proto[HCI_PROTO_SCO];
473 if (hp && hp->connect_ind)
474 mask |= hp->connect_ind(hdev, bdaddr, type);
479 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
481 register struct hci_proto *hp;
483 hp = hci_proto[HCI_PROTO_L2CAP];
484 if (hp && hp->connect_cfm)
485 hp->connect_cfm(conn, status);
487 hp = hci_proto[HCI_PROTO_SCO];
488 if (hp && hp->connect_cfm)
489 hp->connect_cfm(conn, status);
492 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
494 register struct hci_proto *hp;
497 hp = hci_proto[HCI_PROTO_L2CAP];
498 if (hp && hp->disconn_ind)
499 reason = hp->disconn_ind(conn);
501 hp = hci_proto[HCI_PROTO_SCO];
502 if (hp && hp->disconn_ind)
503 reason = hp->disconn_ind(conn);
508 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
510 register struct hci_proto *hp;
512 hp = hci_proto[HCI_PROTO_L2CAP];
513 if (hp && hp->disconn_cfm)
514 hp->disconn_cfm(conn, reason);
516 hp = hci_proto[HCI_PROTO_SCO];
517 if (hp && hp->disconn_cfm)
518 hp->disconn_cfm(conn, reason);
521 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
523 register struct hci_proto *hp;
526 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
529 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
531 hp = hci_proto[HCI_PROTO_L2CAP];
532 if (hp && hp->security_cfm)
533 hp->security_cfm(conn, status, encrypt);
535 hp = hci_proto[HCI_PROTO_SCO];
536 if (hp && hp->security_cfm)
537 hp->security_cfm(conn, status, encrypt);
540 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
542 register struct hci_proto *hp;
544 hp = hci_proto[HCI_PROTO_L2CAP];
545 if (hp && hp->security_cfm)
546 hp->security_cfm(conn, status, encrypt);
548 hp = hci_proto[HCI_PROTO_SCO];
549 if (hp && hp->security_cfm)
550 hp->security_cfm(conn, status, encrypt);
553 int hci_register_proto(struct hci_proto *hproto);
554 int hci_unregister_proto(struct hci_proto *hproto);
556 /* ----- HCI callbacks ----- */
558 struct list_head list;
562 void (*security_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
563 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
564 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
567 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
572 hci_proto_auth_cfm(conn, status);
574 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
577 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
579 read_lock_bh(&hci_cb_list_lock);
580 list_for_each(p, &hci_cb_list) {
581 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
582 if (cb->security_cfm)
583 cb->security_cfm(conn, status, encrypt);
585 read_unlock_bh(&hci_cb_list_lock);
588 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
592 if (conn->sec_level == BT_SECURITY_SDP)
593 conn->sec_level = BT_SECURITY_LOW;
595 hci_proto_encrypt_cfm(conn, status, encrypt);
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->security_cfm)
601 cb->security_cfm(conn, status, encrypt);
603 read_unlock_bh(&hci_cb_list_lock);
606 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
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->key_change_cfm)
614 cb->key_change_cfm(conn, status);
616 read_unlock_bh(&hci_cb_list_lock);
619 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, __u8 role)
623 read_lock_bh(&hci_cb_list_lock);
624 list_for_each(p, &hci_cb_list) {
625 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
626 if (cb->role_switch_cfm)
627 cb->role_switch_cfm(conn, status, role);
629 read_unlock_bh(&hci_cb_list_lock);
632 int hci_register_cb(struct hci_cb *hcb);
633 int hci_unregister_cb(struct hci_cb *hcb);
635 int hci_register_notifier(struct notifier_block *nb);
636 int hci_unregister_notifier(struct notifier_block *nb);
638 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
639 int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
640 int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
642 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
644 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
646 /* ----- HCI Sockets ----- */
647 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
649 /* HCI info for socket */
650 #define hci_pi(sk) ((struct hci_pinfo *) sk)
654 struct hci_dev *hdev;
655 struct hci_filter filter;
659 /* HCI security filter */
660 #define HCI_SFLT_MAX_OGF 5
662 struct hci_sec_filter {
665 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
668 /* ----- HCI requests ----- */
669 #define HCI_REQ_DONE 0
670 #define HCI_REQ_PEND 1
671 #define HCI_REQ_CANCELED 2
673 #define hci_req_lock(d) mutex_lock(&d->req_lock)
674 #define hci_req_unlock(d) mutex_unlock(&d->req_lock)
676 void hci_req_complete(struct hci_dev *hdev, int result);
678 #endif /* __HCI_CORE_H */