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;
85 __u16 sniff_min_interval;
86 __u16 sniff_max_interval;
96 unsigned int acl_pkts;
97 unsigned int sco_pkts;
99 unsigned long cmd_last_tx;
100 unsigned long acl_last_tx;
101 unsigned long sco_last_tx;
103 struct tasklet_struct cmd_task;
104 struct tasklet_struct rx_task;
105 struct tasklet_struct tx_task;
107 struct sk_buff_head rx_q;
108 struct sk_buff_head raw_q;
109 struct sk_buff_head cmd_q;
111 struct sk_buff *sent_cmd;
112 struct sk_buff *reassembly[3];
114 struct semaphore req_lock;
115 wait_queue_head_t req_wait_q;
119 struct inquiry_cache inq_cache;
120 struct hci_conn_hash conn_hash;
122 struct hci_dev_stats stat;
124 struct sk_buff_head driver_init;
131 struct device *parent;
134 struct module *owner;
136 int (*open)(struct hci_dev *hdev);
137 int (*close)(struct hci_dev *hdev);
138 int (*flush)(struct hci_dev *hdev);
139 int (*send)(struct sk_buff *skb);
140 void (*destruct)(struct hci_dev *hdev);
141 void (*notify)(struct hci_dev *hdev, unsigned int evt);
142 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
146 struct list_head list;
168 struct sk_buff_head data_q;
170 struct timer_list disc_timer;
171 struct timer_list idle_timer;
173 struct work_struct work;
177 struct hci_dev *hdev;
182 struct hci_conn *link;
185 extern struct hci_proto *hci_proto[];
186 extern struct list_head hci_dev_list;
187 extern struct list_head hci_cb_list;
188 extern rwlock_t hci_dev_list_lock;
189 extern rwlock_t hci_cb_list_lock;
191 /* ----- Inquiry cache ----- */
192 #define INQUIRY_CACHE_AGE_MAX (HZ*30) // 30 seconds
193 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) // 60 seconds
195 #define inquiry_cache_lock(c) spin_lock(&c->lock)
196 #define inquiry_cache_unlock(c) spin_unlock(&c->lock)
197 #define inquiry_cache_lock_bh(c) spin_lock_bh(&c->lock)
198 #define inquiry_cache_unlock_bh(c) spin_unlock_bh(&c->lock)
200 static inline void inquiry_cache_init(struct hci_dev *hdev)
202 struct inquiry_cache *c = &hdev->inq_cache;
203 spin_lock_init(&c->lock);
207 static inline int inquiry_cache_empty(struct hci_dev *hdev)
209 struct inquiry_cache *c = &hdev->inq_cache;
210 return (c->list == NULL);
213 static inline long inquiry_cache_age(struct hci_dev *hdev)
215 struct inquiry_cache *c = &hdev->inq_cache;
216 return jiffies - c->timestamp;
219 static inline long inquiry_entry_age(struct inquiry_entry *e)
221 return jiffies - e->timestamp;
224 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
225 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
227 /* ----- HCI Connections ----- */
230 HCI_CONN_ENCRYPT_PEND,
231 HCI_CONN_RSWITCH_PEND,
232 HCI_CONN_MODE_CHANGE_PEND,
235 static inline void hci_conn_hash_init(struct hci_dev *hdev)
237 struct hci_conn_hash *h = &hdev->conn_hash;
238 INIT_LIST_HEAD(&h->list);
239 spin_lock_init(&h->lock);
244 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
246 struct hci_conn_hash *h = &hdev->conn_hash;
247 list_add(&c->list, &h->list);
248 if (c->type == ACL_LINK)
254 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
256 struct hci_conn_hash *h = &hdev->conn_hash;
258 if (c->type == ACL_LINK)
264 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
267 struct hci_conn_hash *h = &hdev->conn_hash;
271 list_for_each(p, &h->list) {
272 c = list_entry(p, struct hci_conn, list);
273 if (c->handle == handle)
279 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
280 __u8 type, bdaddr_t *ba)
282 struct hci_conn_hash *h = &hdev->conn_hash;
286 list_for_each(p, &h->list) {
287 c = list_entry(p, struct hci_conn, list);
288 if (c->type == type && !bacmp(&c->dst, ba))
294 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
295 __u8 type, __u16 state)
297 struct hci_conn_hash *h = &hdev->conn_hash;
301 list_for_each(p, &h->list) {
302 c = list_entry(p, struct hci_conn, list);
303 if (c->type == type && c->state == state)
309 void hci_acl_connect(struct hci_conn *conn);
310 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
311 void hci_add_sco(struct hci_conn *conn, __u16 handle);
313 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
314 int hci_conn_del(struct hci_conn *conn);
315 void hci_conn_hash_flush(struct hci_dev *hdev);
317 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *src);
318 int hci_conn_auth(struct hci_conn *conn);
319 int hci_conn_encrypt(struct hci_conn *conn);
320 int hci_conn_change_link_key(struct hci_conn *conn);
321 int hci_conn_switch_role(struct hci_conn *conn, uint8_t role);
323 void hci_conn_enter_active_mode(struct hci_conn *conn);
324 void hci_conn_enter_sniff_mode(struct hci_conn *conn);
326 static inline void hci_conn_hold(struct hci_conn *conn)
328 atomic_inc(&conn->refcnt);
329 del_timer(&conn->disc_timer);
332 static inline void hci_conn_put(struct hci_conn *conn)
334 if (atomic_dec_and_test(&conn->refcnt)) {
336 if (conn->type == ACL_LINK) {
337 del_timer(&conn->idle_timer);
338 if (conn->state == BT_CONNECTED) {
339 timeo = msecs_to_jiffies(HCI_DISCONN_TIMEOUT);
343 timeo = msecs_to_jiffies(10);
345 timeo = msecs_to_jiffies(10);
346 mod_timer(&conn->disc_timer, jiffies + timeo);
350 /* ----- HCI tasks ----- */
351 static inline void hci_sched_cmd(struct hci_dev *hdev)
353 tasklet_schedule(&hdev->cmd_task);
356 static inline void hci_sched_rx(struct hci_dev *hdev)
358 tasklet_schedule(&hdev->rx_task);
361 static inline void hci_sched_tx(struct hci_dev *hdev)
363 tasklet_schedule(&hdev->tx_task);
366 /* ----- HCI Devices ----- */
367 static inline void __hci_dev_put(struct hci_dev *d)
369 if (atomic_dec_and_test(&d->refcnt))
373 static inline void hci_dev_put(struct hci_dev *d)
376 module_put(d->owner);
379 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
381 atomic_inc(&d->refcnt);
385 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
387 if (try_module_get(d->owner))
388 return __hci_dev_hold(d);
392 #define hci_dev_lock(d) spin_lock(&d->lock)
393 #define hci_dev_unlock(d) spin_unlock(&d->lock)
394 #define hci_dev_lock_bh(d) spin_lock_bh(&d->lock)
395 #define hci_dev_unlock_bh(d) spin_unlock_bh(&d->lock)
397 struct hci_dev *hci_dev_get(int index);
398 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
400 struct hci_dev *hci_alloc_dev(void);
401 void hci_free_dev(struct hci_dev *hdev);
402 int hci_register_dev(struct hci_dev *hdev);
403 int hci_unregister_dev(struct hci_dev *hdev);
404 int hci_suspend_dev(struct hci_dev *hdev);
405 int hci_resume_dev(struct hci_dev *hdev);
406 int hci_dev_open(__u16 dev);
407 int hci_dev_close(__u16 dev);
408 int hci_dev_reset(__u16 dev);
409 int hci_dev_reset_stat(__u16 dev);
410 int hci_dev_cmd(unsigned int cmd, void __user *arg);
411 int hci_get_dev_list(void __user *arg);
412 int hci_get_dev_info(void __user *arg);
413 int hci_get_conn_list(void __user *arg);
414 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
415 int hci_inquiry(void __user *arg);
417 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
419 /* Receive frame from HCI drivers */
420 static inline int hci_recv_frame(struct sk_buff *skb)
422 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
423 if (!hdev || (!test_bit(HCI_UP, &hdev->flags)
424 && !test_bit(HCI_INIT, &hdev->flags))) {
430 bt_cb(skb)->incoming = 1;
433 __net_timestamp(skb);
435 /* Queue frame for rx task */
436 skb_queue_tail(&hdev->rx_q, skb);
441 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
443 int hci_register_sysfs(struct hci_dev *hdev);
444 void hci_unregister_sysfs(struct hci_dev *hdev);
445 void hci_conn_add_sysfs(struct hci_conn *conn);
446 void hci_conn_del_sysfs(struct hci_conn *conn);
448 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
450 /* ----- LMP capabilities ----- */
451 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
452 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
453 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
454 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
456 /* ----- HCI protocols ----- */
464 int (*connect_ind) (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
465 int (*connect_cfm) (struct hci_conn *conn, __u8 status);
466 int (*disconn_ind) (struct hci_conn *conn, __u8 reason);
467 int (*recv_acldata) (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
468 int (*recv_scodata) (struct hci_conn *conn, struct sk_buff *skb);
469 int (*auth_cfm) (struct hci_conn *conn, __u8 status);
470 int (*encrypt_cfm) (struct hci_conn *conn, __u8 status);
473 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
475 register struct hci_proto *hp;
478 hp = hci_proto[HCI_PROTO_L2CAP];
479 if (hp && hp->connect_ind)
480 mask |= hp->connect_ind(hdev, bdaddr, type);
482 hp = hci_proto[HCI_PROTO_SCO];
483 if (hp && hp->connect_ind)
484 mask |= hp->connect_ind(hdev, bdaddr, type);
489 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
491 register struct hci_proto *hp;
493 hp = hci_proto[HCI_PROTO_L2CAP];
494 if (hp && hp->connect_cfm)
495 hp->connect_cfm(conn, status);
497 hp = hci_proto[HCI_PROTO_SCO];
498 if (hp && hp->connect_cfm)
499 hp->connect_cfm(conn, status);
502 static inline void hci_proto_disconn_ind(struct hci_conn *conn, __u8 reason)
504 register struct hci_proto *hp;
506 hp = hci_proto[HCI_PROTO_L2CAP];
507 if (hp && hp->disconn_ind)
508 hp->disconn_ind(conn, reason);
510 hp = hci_proto[HCI_PROTO_SCO];
511 if (hp && hp->disconn_ind)
512 hp->disconn_ind(conn, reason);
515 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
517 register struct hci_proto *hp;
519 hp = hci_proto[HCI_PROTO_L2CAP];
520 if (hp && hp->auth_cfm)
521 hp->auth_cfm(conn, status);
523 hp = hci_proto[HCI_PROTO_SCO];
524 if (hp && hp->auth_cfm)
525 hp->auth_cfm(conn, status);
528 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status)
530 register struct hci_proto *hp;
532 hp = hci_proto[HCI_PROTO_L2CAP];
533 if (hp && hp->encrypt_cfm)
534 hp->encrypt_cfm(conn, status);
536 hp = hci_proto[HCI_PROTO_SCO];
537 if (hp && hp->encrypt_cfm)
538 hp->encrypt_cfm(conn, status);
541 int hci_register_proto(struct hci_proto *hproto);
542 int hci_unregister_proto(struct hci_proto *hproto);
544 /* ----- HCI callbacks ----- */
546 struct list_head list;
550 void (*auth_cfm) (struct hci_conn *conn, __u8 status);
551 void (*encrypt_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
552 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
553 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
556 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
560 hci_proto_auth_cfm(conn, status);
562 read_lock_bh(&hci_cb_list_lock);
563 list_for_each(p, &hci_cb_list) {
564 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
566 cb->auth_cfm(conn, status);
568 read_unlock_bh(&hci_cb_list_lock);
571 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
575 hci_proto_encrypt_cfm(conn, status);
577 read_lock_bh(&hci_cb_list_lock);
578 list_for_each(p, &hci_cb_list) {
579 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
581 cb->encrypt_cfm(conn, status, encrypt);
583 read_unlock_bh(&hci_cb_list_lock);
586 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
590 read_lock_bh(&hci_cb_list_lock);
591 list_for_each(p, &hci_cb_list) {
592 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
593 if (cb->key_change_cfm)
594 cb->key_change_cfm(conn, status);
596 read_unlock_bh(&hci_cb_list_lock);
599 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, __u8 role)
603 read_lock_bh(&hci_cb_list_lock);
604 list_for_each(p, &hci_cb_list) {
605 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
606 if (cb->role_switch_cfm)
607 cb->role_switch_cfm(conn, status, role);
609 read_unlock_bh(&hci_cb_list_lock);
612 int hci_register_cb(struct hci_cb *hcb);
613 int hci_unregister_cb(struct hci_cb *hcb);
615 int hci_register_notifier(struct notifier_block *nb);
616 int hci_unregister_notifier(struct notifier_block *nb);
618 int hci_send_cmd(struct hci_dev *hdev, __u16 ogf, __u16 ocf, __u32 plen, void *param);
619 int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
620 int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
622 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 ogf, __u16 ocf);
624 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
626 /* ----- HCI Sockets ----- */
627 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
629 /* HCI info for socket */
630 #define hci_pi(sk) ((struct hci_pinfo *) sk)
634 struct hci_dev *hdev;
635 struct hci_filter filter;
639 /* HCI security filter */
640 #define HCI_SFLT_MAX_OGF 5
642 struct hci_sec_filter {
645 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
648 /* ----- HCI requests ----- */
649 #define HCI_REQ_DONE 0
650 #define HCI_REQ_PEND 1
651 #define HCI_REQ_CANCELED 2
653 #define hci_req_lock(d) down(&d->req_lock)
654 #define hci_req_unlock(d) up(&d->req_lock)
656 void hci_req_complete(struct hci_dev *hdev, int result);
658 #endif /* __HCI_CORE_H */