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;
91 __u16 sniff_min_interval;
92 __u16 sniff_max_interval;
100 unsigned int acl_mtu;
101 unsigned int sco_mtu;
102 unsigned int acl_pkts;
103 unsigned int sco_pkts;
105 unsigned long cmd_last_tx;
106 unsigned long acl_last_tx;
107 unsigned long sco_last_tx;
109 struct tasklet_struct cmd_task;
110 struct tasklet_struct rx_task;
111 struct tasklet_struct tx_task;
113 struct sk_buff_head rx_q;
114 struct sk_buff_head raw_q;
115 struct sk_buff_head cmd_q;
117 struct sk_buff *sent_cmd;
118 struct sk_buff *reassembly[3];
120 struct semaphore req_lock;
121 wait_queue_head_t req_wait_q;
125 struct inquiry_cache inq_cache;
126 struct hci_conn_hash conn_hash;
128 struct hci_dev_stats stat;
130 struct sk_buff_head driver_init;
137 struct device *parent;
140 struct module *owner;
142 int (*open)(struct hci_dev *hdev);
143 int (*close)(struct hci_dev *hdev);
144 int (*flush)(struct hci_dev *hdev);
145 int (*send)(struct sk_buff *skb);
146 void (*destruct)(struct hci_dev *hdev);
147 void (*notify)(struct hci_dev *hdev, unsigned int evt);
148 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
152 struct list_head list;
176 struct sk_buff_head data_q;
178 struct timer_list disc_timer;
179 struct timer_list idle_timer;
181 struct work_struct work;
185 struct hci_dev *hdev;
190 struct hci_conn *link;
193 extern struct hci_proto *hci_proto[];
194 extern struct list_head hci_dev_list;
195 extern struct list_head hci_cb_list;
196 extern rwlock_t hci_dev_list_lock;
197 extern rwlock_t hci_cb_list_lock;
199 /* ----- Inquiry cache ----- */
200 #define INQUIRY_CACHE_AGE_MAX (HZ*30) // 30 seconds
201 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) // 60 seconds
203 #define inquiry_cache_lock(c) spin_lock(&c->lock)
204 #define inquiry_cache_unlock(c) spin_unlock(&c->lock)
205 #define inquiry_cache_lock_bh(c) spin_lock_bh(&c->lock)
206 #define inquiry_cache_unlock_bh(c) spin_unlock_bh(&c->lock)
208 static inline void inquiry_cache_init(struct hci_dev *hdev)
210 struct inquiry_cache *c = &hdev->inq_cache;
211 spin_lock_init(&c->lock);
215 static inline int inquiry_cache_empty(struct hci_dev *hdev)
217 struct inquiry_cache *c = &hdev->inq_cache;
218 return (c->list == NULL);
221 static inline long inquiry_cache_age(struct hci_dev *hdev)
223 struct inquiry_cache *c = &hdev->inq_cache;
224 return jiffies - c->timestamp;
227 static inline long inquiry_entry_age(struct inquiry_entry *e)
229 return jiffies - e->timestamp;
232 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
233 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
235 /* ----- HCI Connections ----- */
238 HCI_CONN_ENCRYPT_PEND,
239 HCI_CONN_RSWITCH_PEND,
240 HCI_CONN_MODE_CHANGE_PEND,
243 static inline void hci_conn_hash_init(struct hci_dev *hdev)
245 struct hci_conn_hash *h = &hdev->conn_hash;
246 INIT_LIST_HEAD(&h->list);
247 spin_lock_init(&h->lock);
252 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
254 struct hci_conn_hash *h = &hdev->conn_hash;
255 list_add(&c->list, &h->list);
256 if (c->type == ACL_LINK)
262 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
264 struct hci_conn_hash *h = &hdev->conn_hash;
266 if (c->type == ACL_LINK)
272 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
275 struct hci_conn_hash *h = &hdev->conn_hash;
279 list_for_each(p, &h->list) {
280 c = list_entry(p, struct hci_conn, list);
281 if (c->handle == handle)
287 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
288 __u8 type, bdaddr_t *ba)
290 struct hci_conn_hash *h = &hdev->conn_hash;
294 list_for_each(p, &h->list) {
295 c = list_entry(p, struct hci_conn, list);
296 if (c->type == type && !bacmp(&c->dst, ba))
302 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
303 __u8 type, __u16 state)
305 struct hci_conn_hash *h = &hdev->conn_hash;
309 list_for_each(p, &h->list) {
310 c = list_entry(p, struct hci_conn, list);
311 if (c->type == type && c->state == state)
317 void hci_acl_connect(struct hci_conn *conn);
318 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
319 void hci_add_sco(struct hci_conn *conn, __u16 handle);
320 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
322 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
323 int hci_conn_del(struct hci_conn *conn);
324 void hci_conn_hash_flush(struct hci_dev *hdev);
325 void hci_conn_check_pending(struct hci_dev *hdev);
327 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *src);
328 int hci_conn_auth(struct hci_conn *conn);
329 int hci_conn_encrypt(struct hci_conn *conn);
330 int hci_conn_change_link_key(struct hci_conn *conn);
331 int hci_conn_switch_role(struct hci_conn *conn, uint8_t role);
333 void hci_conn_enter_active_mode(struct hci_conn *conn);
334 void hci_conn_enter_sniff_mode(struct hci_conn *conn);
336 static inline void hci_conn_hold(struct hci_conn *conn)
338 atomic_inc(&conn->refcnt);
339 del_timer(&conn->disc_timer);
342 static inline void hci_conn_put(struct hci_conn *conn)
344 if (atomic_dec_and_test(&conn->refcnt)) {
346 if (conn->type == ACL_LINK) {
347 del_timer(&conn->idle_timer);
348 if (conn->state == BT_CONNECTED) {
349 timeo = msecs_to_jiffies(HCI_DISCONN_TIMEOUT);
353 timeo = msecs_to_jiffies(10);
355 timeo = msecs_to_jiffies(10);
356 mod_timer(&conn->disc_timer, jiffies + timeo);
360 /* ----- HCI tasks ----- */
361 static inline void hci_sched_cmd(struct hci_dev *hdev)
363 tasklet_schedule(&hdev->cmd_task);
366 static inline void hci_sched_rx(struct hci_dev *hdev)
368 tasklet_schedule(&hdev->rx_task);
371 static inline void hci_sched_tx(struct hci_dev *hdev)
373 tasklet_schedule(&hdev->tx_task);
376 /* ----- HCI Devices ----- */
377 static inline void __hci_dev_put(struct hci_dev *d)
379 if (atomic_dec_and_test(&d->refcnt))
383 static inline void hci_dev_put(struct hci_dev *d)
386 module_put(d->owner);
389 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
391 atomic_inc(&d->refcnt);
395 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
397 if (try_module_get(d->owner))
398 return __hci_dev_hold(d);
402 #define hci_dev_lock(d) spin_lock(&d->lock)
403 #define hci_dev_unlock(d) spin_unlock(&d->lock)
404 #define hci_dev_lock_bh(d) spin_lock_bh(&d->lock)
405 #define hci_dev_unlock_bh(d) spin_unlock_bh(&d->lock)
407 struct hci_dev *hci_dev_get(int index);
408 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
410 struct hci_dev *hci_alloc_dev(void);
411 void hci_free_dev(struct hci_dev *hdev);
412 int hci_register_dev(struct hci_dev *hdev);
413 int hci_unregister_dev(struct hci_dev *hdev);
414 int hci_suspend_dev(struct hci_dev *hdev);
415 int hci_resume_dev(struct hci_dev *hdev);
416 int hci_dev_open(__u16 dev);
417 int hci_dev_close(__u16 dev);
418 int hci_dev_reset(__u16 dev);
419 int hci_dev_reset_stat(__u16 dev);
420 int hci_dev_cmd(unsigned int cmd, void __user *arg);
421 int hci_get_dev_list(void __user *arg);
422 int hci_get_dev_info(void __user *arg);
423 int hci_get_conn_list(void __user *arg);
424 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
425 int hci_inquiry(void __user *arg);
427 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
429 /* Receive frame from HCI drivers */
430 static inline int hci_recv_frame(struct sk_buff *skb)
432 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
433 if (!hdev || (!test_bit(HCI_UP, &hdev->flags)
434 && !test_bit(HCI_INIT, &hdev->flags))) {
440 bt_cb(skb)->incoming = 1;
443 __net_timestamp(skb);
445 /* Queue frame for rx task */
446 skb_queue_tail(&hdev->rx_q, skb);
451 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
453 int hci_register_sysfs(struct hci_dev *hdev);
454 void hci_unregister_sysfs(struct hci_dev *hdev);
455 void hci_conn_add_sysfs(struct hci_conn *conn);
456 void hci_conn_del_sysfs(struct hci_conn *conn);
458 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
460 /* ----- LMP capabilities ----- */
461 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
462 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
463 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
464 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
465 #define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO)
466 #define lmp_ssp_capable(dev) ((dev)->features[6] & LMP_SIMPLE_PAIR)
468 /* ----- HCI protocols ----- */
476 int (*connect_ind) (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
477 int (*connect_cfm) (struct hci_conn *conn, __u8 status);
478 int (*disconn_ind) (struct hci_conn *conn, __u8 reason);
479 int (*recv_acldata) (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
480 int (*recv_scodata) (struct hci_conn *conn, struct sk_buff *skb);
481 int (*auth_cfm) (struct hci_conn *conn, __u8 status);
482 int (*encrypt_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
485 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
487 register struct hci_proto *hp;
490 hp = hci_proto[HCI_PROTO_L2CAP];
491 if (hp && hp->connect_ind)
492 mask |= hp->connect_ind(hdev, bdaddr, type);
494 hp = hci_proto[HCI_PROTO_SCO];
495 if (hp && hp->connect_ind)
496 mask |= hp->connect_ind(hdev, bdaddr, type);
501 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
503 register struct hci_proto *hp;
505 hp = hci_proto[HCI_PROTO_L2CAP];
506 if (hp && hp->connect_cfm)
507 hp->connect_cfm(conn, status);
509 hp = hci_proto[HCI_PROTO_SCO];
510 if (hp && hp->connect_cfm)
511 hp->connect_cfm(conn, status);
514 static inline void hci_proto_disconn_ind(struct hci_conn *conn, __u8 reason)
516 register struct hci_proto *hp;
518 hp = hci_proto[HCI_PROTO_L2CAP];
519 if (hp && hp->disconn_ind)
520 hp->disconn_ind(conn, reason);
522 hp = hci_proto[HCI_PROTO_SCO];
523 if (hp && hp->disconn_ind)
524 hp->disconn_ind(conn, reason);
527 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
529 register struct hci_proto *hp;
531 hp = hci_proto[HCI_PROTO_L2CAP];
532 if (hp && hp->auth_cfm)
533 hp->auth_cfm(conn, status);
535 hp = hci_proto[HCI_PROTO_SCO];
536 if (hp && hp->auth_cfm)
537 hp->auth_cfm(conn, status);
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->encrypt_cfm)
546 hp->encrypt_cfm(conn, status, encrypt);
548 hp = hci_proto[HCI_PROTO_SCO];
549 if (hp && hp->encrypt_cfm)
550 hp->encrypt_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 (*auth_cfm) (struct hci_conn *conn, __u8 status);
563 void (*encrypt_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
564 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
565 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
568 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
572 hci_proto_auth_cfm(conn, status);
574 read_lock_bh(&hci_cb_list_lock);
575 list_for_each(p, &hci_cb_list) {
576 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
578 cb->auth_cfm(conn, status);
580 read_unlock_bh(&hci_cb_list_lock);
583 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
587 hci_proto_encrypt_cfm(conn, status, encrypt);
589 read_lock_bh(&hci_cb_list_lock);
590 list_for_each(p, &hci_cb_list) {
591 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
593 cb->encrypt_cfm(conn, status, encrypt);
595 read_unlock_bh(&hci_cb_list_lock);
598 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
602 read_lock_bh(&hci_cb_list_lock);
603 list_for_each(p, &hci_cb_list) {
604 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
605 if (cb->key_change_cfm)
606 cb->key_change_cfm(conn, status);
608 read_unlock_bh(&hci_cb_list_lock);
611 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, __u8 role)
615 read_lock_bh(&hci_cb_list_lock);
616 list_for_each(p, &hci_cb_list) {
617 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
618 if (cb->role_switch_cfm)
619 cb->role_switch_cfm(conn, status, role);
621 read_unlock_bh(&hci_cb_list_lock);
624 int hci_register_cb(struct hci_cb *hcb);
625 int hci_unregister_cb(struct hci_cb *hcb);
627 int hci_register_notifier(struct notifier_block *nb);
628 int hci_unregister_notifier(struct notifier_block *nb);
630 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
631 int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
632 int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
634 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
636 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
638 /* ----- HCI Sockets ----- */
639 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
641 /* HCI info for socket */
642 #define hci_pi(sk) ((struct hci_pinfo *) sk)
646 struct hci_dev *hdev;
647 struct hci_filter filter;
651 /* HCI security filter */
652 #define HCI_SFLT_MAX_OGF 5
654 struct hci_sec_filter {
657 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
660 /* ----- HCI requests ----- */
661 #define HCI_REQ_DONE 0
662 #define HCI_REQ_PEND 1
663 #define HCI_REQ_CANCELED 2
665 #define hci_req_lock(d) down(&d->req_lock)
666 #define hci_req_unlock(d) up(&d->req_lock)
668 void hci_req_complete(struct hci_dev *hdev, int result);
670 #endif /* __HCI_CORE_H */