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;
177 struct sk_buff_head data_q;
179 struct timer_list disc_timer;
180 struct timer_list idle_timer;
182 struct work_struct work;
186 struct hci_dev *hdev;
191 struct hci_conn *link;
194 extern struct hci_proto *hci_proto[];
195 extern struct list_head hci_dev_list;
196 extern struct list_head hci_cb_list;
197 extern rwlock_t hci_dev_list_lock;
198 extern rwlock_t hci_cb_list_lock;
200 /* ----- Inquiry cache ----- */
201 #define INQUIRY_CACHE_AGE_MAX (HZ*30) // 30 seconds
202 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) // 60 seconds
204 #define inquiry_cache_lock(c) spin_lock(&c->lock)
205 #define inquiry_cache_unlock(c) spin_unlock(&c->lock)
206 #define inquiry_cache_lock_bh(c) spin_lock_bh(&c->lock)
207 #define inquiry_cache_unlock_bh(c) spin_unlock_bh(&c->lock)
209 static inline void inquiry_cache_init(struct hci_dev *hdev)
211 struct inquiry_cache *c = &hdev->inq_cache;
212 spin_lock_init(&c->lock);
216 static inline int inquiry_cache_empty(struct hci_dev *hdev)
218 struct inquiry_cache *c = &hdev->inq_cache;
219 return (c->list == NULL);
222 static inline long inquiry_cache_age(struct hci_dev *hdev)
224 struct inquiry_cache *c = &hdev->inq_cache;
225 return jiffies - c->timestamp;
228 static inline long inquiry_entry_age(struct inquiry_entry *e)
230 return jiffies - e->timestamp;
233 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
234 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
236 /* ----- HCI Connections ----- */
239 HCI_CONN_ENCRYPT_PEND,
240 HCI_CONN_RSWITCH_PEND,
241 HCI_CONN_MODE_CHANGE_PEND,
244 static inline void hci_conn_hash_init(struct hci_dev *hdev)
246 struct hci_conn_hash *h = &hdev->conn_hash;
247 INIT_LIST_HEAD(&h->list);
248 spin_lock_init(&h->lock);
253 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
255 struct hci_conn_hash *h = &hdev->conn_hash;
256 list_add(&c->list, &h->list);
257 if (c->type == ACL_LINK)
263 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
265 struct hci_conn_hash *h = &hdev->conn_hash;
267 if (c->type == ACL_LINK)
273 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
276 struct hci_conn_hash *h = &hdev->conn_hash;
280 list_for_each(p, &h->list) {
281 c = list_entry(p, struct hci_conn, list);
282 if (c->handle == handle)
288 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
289 __u8 type, bdaddr_t *ba)
291 struct hci_conn_hash *h = &hdev->conn_hash;
295 list_for_each(p, &h->list) {
296 c = list_entry(p, struct hci_conn, list);
297 if (c->type == type && !bacmp(&c->dst, ba))
303 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
304 __u8 type, __u16 state)
306 struct hci_conn_hash *h = &hdev->conn_hash;
310 list_for_each(p, &h->list) {
311 c = list_entry(p, struct hci_conn, list);
312 if (c->type == type && c->state == state)
318 void hci_acl_connect(struct hci_conn *conn);
319 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
320 void hci_add_sco(struct hci_conn *conn, __u16 handle);
321 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
323 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
324 int hci_conn_del(struct hci_conn *conn);
325 void hci_conn_hash_flush(struct hci_dev *hdev);
326 void hci_conn_check_pending(struct hci_dev *hdev);
328 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *src);
329 int hci_conn_auth(struct hci_conn *conn);
330 int hci_conn_encrypt(struct hci_conn *conn);
331 int hci_conn_change_link_key(struct hci_conn *conn);
332 int hci_conn_switch_role(struct hci_conn *conn, uint8_t role);
334 void hci_conn_enter_active_mode(struct hci_conn *conn);
335 void hci_conn_enter_sniff_mode(struct hci_conn *conn);
337 static inline void hci_conn_hold(struct hci_conn *conn)
339 atomic_inc(&conn->refcnt);
340 del_timer(&conn->disc_timer);
343 static inline void hci_conn_put(struct hci_conn *conn)
345 if (atomic_dec_and_test(&conn->refcnt)) {
347 if (conn->type == ACL_LINK) {
348 del_timer(&conn->idle_timer);
349 if (conn->state == BT_CONNECTED) {
350 timeo = msecs_to_jiffies(HCI_DISCONN_TIMEOUT);
354 timeo = msecs_to_jiffies(10);
356 timeo = msecs_to_jiffies(10);
357 mod_timer(&conn->disc_timer, jiffies + timeo);
361 /* ----- HCI tasks ----- */
362 static inline void hci_sched_cmd(struct hci_dev *hdev)
364 tasklet_schedule(&hdev->cmd_task);
367 static inline void hci_sched_rx(struct hci_dev *hdev)
369 tasklet_schedule(&hdev->rx_task);
372 static inline void hci_sched_tx(struct hci_dev *hdev)
374 tasklet_schedule(&hdev->tx_task);
377 /* ----- HCI Devices ----- */
378 static inline void __hci_dev_put(struct hci_dev *d)
380 if (atomic_dec_and_test(&d->refcnt))
384 static inline void hci_dev_put(struct hci_dev *d)
387 module_put(d->owner);
390 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
392 atomic_inc(&d->refcnt);
396 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
398 if (try_module_get(d->owner))
399 return __hci_dev_hold(d);
403 #define hci_dev_lock(d) spin_lock(&d->lock)
404 #define hci_dev_unlock(d) spin_unlock(&d->lock)
405 #define hci_dev_lock_bh(d) spin_lock_bh(&d->lock)
406 #define hci_dev_unlock_bh(d) spin_unlock_bh(&d->lock)
408 struct hci_dev *hci_dev_get(int index);
409 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
411 struct hci_dev *hci_alloc_dev(void);
412 void hci_free_dev(struct hci_dev *hdev);
413 int hci_register_dev(struct hci_dev *hdev);
414 int hci_unregister_dev(struct hci_dev *hdev);
415 int hci_suspend_dev(struct hci_dev *hdev);
416 int hci_resume_dev(struct hci_dev *hdev);
417 int hci_dev_open(__u16 dev);
418 int hci_dev_close(__u16 dev);
419 int hci_dev_reset(__u16 dev);
420 int hci_dev_reset_stat(__u16 dev);
421 int hci_dev_cmd(unsigned int cmd, void __user *arg);
422 int hci_get_dev_list(void __user *arg);
423 int hci_get_dev_info(void __user *arg);
424 int hci_get_conn_list(void __user *arg);
425 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
426 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
427 int hci_inquiry(void __user *arg);
429 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
431 /* Receive frame from HCI drivers */
432 static inline int hci_recv_frame(struct sk_buff *skb)
434 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
435 if (!hdev || (!test_bit(HCI_UP, &hdev->flags)
436 && !test_bit(HCI_INIT, &hdev->flags))) {
442 bt_cb(skb)->incoming = 1;
445 __net_timestamp(skb);
447 /* Queue frame for rx task */
448 skb_queue_tail(&hdev->rx_q, skb);
453 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
455 int hci_register_sysfs(struct hci_dev *hdev);
456 void hci_unregister_sysfs(struct hci_dev *hdev);
457 void hci_conn_add_sysfs(struct hci_conn *conn);
458 void hci_conn_del_sysfs(struct hci_conn *conn);
460 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
462 /* ----- LMP capabilities ----- */
463 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
464 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
465 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
466 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
467 #define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO)
468 #define lmp_ssp_capable(dev) ((dev)->features[6] & LMP_SIMPLE_PAIR)
470 /* ----- HCI protocols ----- */
478 int (*connect_ind) (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
479 int (*connect_cfm) (struct hci_conn *conn, __u8 status);
480 int (*disconn_ind) (struct hci_conn *conn, __u8 reason);
481 int (*recv_acldata) (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
482 int (*recv_scodata) (struct hci_conn *conn, struct sk_buff *skb);
483 int (*auth_cfm) (struct hci_conn *conn, __u8 status);
484 int (*encrypt_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
487 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
489 register struct hci_proto *hp;
492 hp = hci_proto[HCI_PROTO_L2CAP];
493 if (hp && hp->connect_ind)
494 mask |= hp->connect_ind(hdev, bdaddr, type);
496 hp = hci_proto[HCI_PROTO_SCO];
497 if (hp && hp->connect_ind)
498 mask |= hp->connect_ind(hdev, bdaddr, type);
503 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
505 register struct hci_proto *hp;
507 hp = hci_proto[HCI_PROTO_L2CAP];
508 if (hp && hp->connect_cfm)
509 hp->connect_cfm(conn, status);
511 hp = hci_proto[HCI_PROTO_SCO];
512 if (hp && hp->connect_cfm)
513 hp->connect_cfm(conn, status);
516 static inline void hci_proto_disconn_ind(struct hci_conn *conn, __u8 reason)
518 register struct hci_proto *hp;
520 hp = hci_proto[HCI_PROTO_L2CAP];
521 if (hp && hp->disconn_ind)
522 hp->disconn_ind(conn, reason);
524 hp = hci_proto[HCI_PROTO_SCO];
525 if (hp && hp->disconn_ind)
526 hp->disconn_ind(conn, reason);
529 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
531 register struct hci_proto *hp;
533 hp = hci_proto[HCI_PROTO_L2CAP];
534 if (hp && hp->auth_cfm)
535 hp->auth_cfm(conn, status);
537 hp = hci_proto[HCI_PROTO_SCO];
538 if (hp && hp->auth_cfm)
539 hp->auth_cfm(conn, status);
542 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
544 register struct hci_proto *hp;
546 hp = hci_proto[HCI_PROTO_L2CAP];
547 if (hp && hp->encrypt_cfm)
548 hp->encrypt_cfm(conn, status, encrypt);
550 hp = hci_proto[HCI_PROTO_SCO];
551 if (hp && hp->encrypt_cfm)
552 hp->encrypt_cfm(conn, status, encrypt);
555 int hci_register_proto(struct hci_proto *hproto);
556 int hci_unregister_proto(struct hci_proto *hproto);
558 /* ----- HCI callbacks ----- */
560 struct list_head list;
564 void (*auth_cfm) (struct hci_conn *conn, __u8 status);
565 void (*encrypt_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
566 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
567 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
570 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
574 hci_proto_auth_cfm(conn, status);
576 read_lock_bh(&hci_cb_list_lock);
577 list_for_each(p, &hci_cb_list) {
578 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
580 cb->auth_cfm(conn, status);
582 read_unlock_bh(&hci_cb_list_lock);
585 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
589 hci_proto_encrypt_cfm(conn, status, encrypt);
591 read_lock_bh(&hci_cb_list_lock);
592 list_for_each(p, &hci_cb_list) {
593 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
595 cb->encrypt_cfm(conn, status, encrypt);
597 read_unlock_bh(&hci_cb_list_lock);
600 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
604 read_lock_bh(&hci_cb_list_lock);
605 list_for_each(p, &hci_cb_list) {
606 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
607 if (cb->key_change_cfm)
608 cb->key_change_cfm(conn, status);
610 read_unlock_bh(&hci_cb_list_lock);
613 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, __u8 role)
617 read_lock_bh(&hci_cb_list_lock);
618 list_for_each(p, &hci_cb_list) {
619 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
620 if (cb->role_switch_cfm)
621 cb->role_switch_cfm(conn, status, role);
623 read_unlock_bh(&hci_cb_list_lock);
626 int hci_register_cb(struct hci_cb *hcb);
627 int hci_unregister_cb(struct hci_cb *hcb);
629 int hci_register_notifier(struct notifier_block *nb);
630 int hci_unregister_notifier(struct notifier_block *nb);
632 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
633 int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
634 int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
636 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
638 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
640 /* ----- HCI Sockets ----- */
641 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
643 /* HCI info for socket */
644 #define hci_pi(sk) ((struct hci_pinfo *) sk)
648 struct hci_dev *hdev;
649 struct hci_filter filter;
653 /* HCI security filter */
654 #define HCI_SFLT_MAX_OGF 5
656 struct hci_sec_filter {
659 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
662 /* ----- HCI requests ----- */
663 #define HCI_REQ_DONE 0
664 #define HCI_REQ_PEND 1
665 #define HCI_REQ_CANCELED 2
667 #define hci_req_lock(d) down(&d->req_lock)
668 #define hci_req_unlock(d) up(&d->req_lock)
670 void hci_req_complete(struct hci_dev *hdev, int result);
672 #endif /* __HCI_CORE_H */