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 <linux/proc_fs.h>
29 #include <net/bluetooth/hci.h>
31 /* HCI upper protocols */
32 #define HCI_PROTO_L2CAP 0
33 #define HCI_PROTO_SCO 1
35 #define HCI_INIT_TIMEOUT (HZ * 10)
37 extern struct proc_dir_entry *proc_bt_hci;
39 /* HCI Core structures */
44 __u8 pscan_period_mode;
51 struct inquiry_entry {
52 struct inquiry_entry *next;
54 struct inquiry_data data;
57 struct inquiry_cache {
60 struct inquiry_entry *list;
63 struct hci_conn_hash {
64 struct list_head list;
71 struct list_head list;
95 unsigned int acl_pkts;
96 unsigned int sco_pkts;
98 unsigned long cmd_last_tx;
99 unsigned long acl_last_tx;
100 unsigned long sco_last_tx;
102 struct tasklet_struct cmd_task;
103 struct tasklet_struct rx_task;
104 struct tasklet_struct tx_task;
106 struct sk_buff_head rx_q;
107 struct sk_buff_head raw_q;
108 struct sk_buff_head cmd_q;
110 struct sk_buff *sent_cmd;
112 struct semaphore req_lock;
113 wait_queue_head_t req_wait_q;
117 struct inquiry_cache inq_cache;
118 struct hci_conn_hash conn_hash;
120 struct hci_dev_stats stat;
127 #ifdef CONFIG_PROC_FS
128 struct proc_dir_entry *proc;
131 struct class_device class_dev;
133 struct module *owner;
135 int (*open)(struct hci_dev *hdev);
136 int (*close)(struct hci_dev *hdev);
137 int (*flush)(struct hci_dev *hdev);
138 int (*send)(struct sk_buff *skb);
139 void (*destruct)(struct hci_dev *hdev);
140 void (*notify)(struct hci_dev *hdev, unsigned int evt);
141 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
145 struct list_head list;
161 struct sk_buff_head data_q;
163 struct timer_list timer;
165 struct hci_dev *hdev;
170 struct hci_conn *link;
173 extern struct hci_proto *hci_proto[];
174 extern struct list_head hci_dev_list;
175 extern struct list_head hci_cb_list;
176 extern rwlock_t hci_dev_list_lock;
177 extern rwlock_t hci_cb_list_lock;
179 /* ----- Inquiry cache ----- */
180 #define INQUIRY_CACHE_AGE_MAX (HZ*30) // 30 seconds
181 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) // 60 seconds
183 #define inquiry_cache_lock(c) spin_lock(&c->lock)
184 #define inquiry_cache_unlock(c) spin_unlock(&c->lock)
185 #define inquiry_cache_lock_bh(c) spin_lock_bh(&c->lock)
186 #define inquiry_cache_unlock_bh(c) spin_unlock_bh(&c->lock)
188 static inline void inquiry_cache_init(struct hci_dev *hdev)
190 struct inquiry_cache *c = &hdev->inq_cache;
191 spin_lock_init(&c->lock);
195 static inline int inquiry_cache_empty(struct hci_dev *hdev)
197 struct inquiry_cache *c = &hdev->inq_cache;
198 return (c->list == NULL);
201 static inline long inquiry_cache_age(struct hci_dev *hdev)
203 struct inquiry_cache *c = &hdev->inq_cache;
204 return jiffies - c->timestamp;
207 static inline long inquiry_entry_age(struct inquiry_entry *e)
209 return jiffies - e->timestamp;
212 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
213 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
215 /* ----- HCI Connections ----- */
218 HCI_CONN_ENCRYPT_PEND
221 static inline void hci_conn_hash_init(struct hci_dev *hdev)
223 struct hci_conn_hash *h = &hdev->conn_hash;
224 INIT_LIST_HEAD(&h->list);
225 spin_lock_init(&h->lock);
230 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
232 struct hci_conn_hash *h = &hdev->conn_hash;
233 list_add(&c->list, &h->list);
234 if (c->type == ACL_LINK)
240 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
242 struct hci_conn_hash *h = &hdev->conn_hash;
244 if (c->type == ACL_LINK)
250 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
253 struct hci_conn_hash *h = &hdev->conn_hash;
257 list_for_each(p, &h->list) {
258 c = list_entry(p, struct hci_conn, list);
259 if (c->handle == handle)
265 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
266 __u8 type, bdaddr_t *ba)
268 struct hci_conn_hash *h = &hdev->conn_hash;
272 list_for_each(p, &h->list) {
273 c = list_entry(p, struct hci_conn, list);
274 if (c->type == type && !bacmp(&c->dst, ba))
280 void hci_acl_connect(struct hci_conn *conn);
281 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
282 void hci_add_sco(struct hci_conn *conn, __u16 handle);
284 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
285 int hci_conn_del(struct hci_conn *conn);
286 void hci_conn_hash_flush(struct hci_dev *hdev);
288 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *src);
289 int hci_conn_auth(struct hci_conn *conn);
290 int hci_conn_encrypt(struct hci_conn *conn);
291 int hci_conn_change_link_key(struct hci_conn *conn);
293 static inline void hci_conn_set_timer(struct hci_conn *conn, unsigned long timeout)
295 mod_timer(&conn->timer, jiffies + timeout);
298 static inline void hci_conn_del_timer(struct hci_conn *conn)
300 del_timer(&conn->timer);
303 static inline void hci_conn_hold(struct hci_conn *conn)
305 atomic_inc(&conn->refcnt);
306 hci_conn_del_timer(conn);
309 static inline void hci_conn_put(struct hci_conn *conn)
311 if (atomic_dec_and_test(&conn->refcnt)) {
312 if (conn->type == ACL_LINK) {
313 unsigned long timeo = (conn->out) ?
314 HCI_DISCONN_TIMEOUT : HCI_DISCONN_TIMEOUT * 2;
315 hci_conn_set_timer(conn, timeo);
317 hci_conn_set_timer(conn, HZ / 100);
321 /* ----- HCI tasks ----- */
322 static inline void hci_sched_cmd(struct hci_dev *hdev)
324 tasklet_schedule(&hdev->cmd_task);
327 static inline void hci_sched_rx(struct hci_dev *hdev)
329 tasklet_schedule(&hdev->rx_task);
332 static inline void hci_sched_tx(struct hci_dev *hdev)
334 tasklet_schedule(&hdev->tx_task);
337 /* ----- HCI Devices ----- */
338 static inline void __hci_dev_put(struct hci_dev *d)
340 if (atomic_dec_and_test(&d->refcnt))
344 static inline void hci_dev_put(struct hci_dev *d)
347 module_put(d->owner);
350 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
352 atomic_inc(&d->refcnt);
356 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
358 if (try_module_get(d->owner))
359 return __hci_dev_hold(d);
363 #define hci_dev_lock(d) spin_lock(&d->lock)
364 #define hci_dev_unlock(d) spin_unlock(&d->lock)
365 #define hci_dev_lock_bh(d) spin_lock_bh(&d->lock)
366 #define hci_dev_unlock_bh(d) spin_unlock_bh(&d->lock)
368 struct hci_dev *hci_dev_get(int index);
369 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
371 struct hci_dev *hci_alloc_dev(void);
372 void hci_free_dev(struct hci_dev *hdev);
373 int hci_register_dev(struct hci_dev *hdev);
374 int hci_unregister_dev(struct hci_dev *hdev);
375 int hci_suspend_dev(struct hci_dev *hdev);
376 int hci_resume_dev(struct hci_dev *hdev);
377 int hci_dev_open(__u16 dev);
378 int hci_dev_close(__u16 dev);
379 int hci_dev_reset(__u16 dev);
380 int hci_dev_reset_stat(__u16 dev);
381 int hci_dev_cmd(unsigned int cmd, void __user *arg);
382 int hci_get_dev_list(void __user *arg);
383 int hci_get_dev_info(void __user *arg);
384 int hci_get_conn_list(void __user *arg);
385 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
386 int hci_inquiry(void __user *arg);
388 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
390 /* Receive frame from HCI drivers */
391 static inline int hci_recv_frame(struct sk_buff *skb)
393 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
394 if (!hdev || (!test_bit(HCI_UP, &hdev->flags)
395 && !test_bit(HCI_INIT, &hdev->flags))) {
401 bt_cb(skb)->incoming = 1;
404 do_gettimeofday(&skb->stamp);
406 /* Queue frame for rx task */
407 skb_queue_tail(&hdev->rx_q, skb);
412 int hci_register_sysfs(struct hci_dev *hdev);
413 void hci_unregister_sysfs(struct hci_dev *hdev);
415 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->class_dev.dev = (pdev))
417 /* ----- LMP capabilities ----- */
418 #define lmp_rswitch_capable(dev) (dev->features[0] & LMP_RSWITCH)
419 #define lmp_encrypt_capable(dev) (dev->features[0] & LMP_ENCRYPT)
421 /* ----- HCI protocols ----- */
429 int (*connect_ind) (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
430 int (*connect_cfm) (struct hci_conn *conn, __u8 status);
431 int (*disconn_ind) (struct hci_conn *conn, __u8 reason);
432 int (*recv_acldata) (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
433 int (*recv_scodata) (struct hci_conn *conn, struct sk_buff *skb);
434 int (*auth_cfm) (struct hci_conn *conn, __u8 status);
435 int (*encrypt_cfm) (struct hci_conn *conn, __u8 status);
438 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
440 register struct hci_proto *hp;
443 hp = hci_proto[HCI_PROTO_L2CAP];
444 if (hp && hp->connect_ind)
445 mask |= hp->connect_ind(hdev, bdaddr, type);
447 hp = hci_proto[HCI_PROTO_SCO];
448 if (hp && hp->connect_ind)
449 mask |= hp->connect_ind(hdev, bdaddr, type);
454 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
456 register struct hci_proto *hp;
458 hp = hci_proto[HCI_PROTO_L2CAP];
459 if (hp && hp->connect_cfm)
460 hp->connect_cfm(conn, status);
462 hp = hci_proto[HCI_PROTO_SCO];
463 if (hp && hp->connect_cfm)
464 hp->connect_cfm(conn, status);
467 static inline void hci_proto_disconn_ind(struct hci_conn *conn, __u8 reason)
469 register struct hci_proto *hp;
471 hp = hci_proto[HCI_PROTO_L2CAP];
472 if (hp && hp->disconn_ind)
473 hp->disconn_ind(conn, reason);
475 hp = hci_proto[HCI_PROTO_SCO];
476 if (hp && hp->disconn_ind)
477 hp->disconn_ind(conn, reason);
480 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
482 register struct hci_proto *hp;
484 hp = hci_proto[HCI_PROTO_L2CAP];
485 if (hp && hp->auth_cfm)
486 hp->auth_cfm(conn, status);
488 hp = hci_proto[HCI_PROTO_SCO];
489 if (hp && hp->auth_cfm)
490 hp->auth_cfm(conn, status);
493 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status)
495 register struct hci_proto *hp;
497 hp = hci_proto[HCI_PROTO_L2CAP];
498 if (hp && hp->encrypt_cfm)
499 hp->encrypt_cfm(conn, status);
501 hp = hci_proto[HCI_PROTO_SCO];
502 if (hp && hp->encrypt_cfm)
503 hp->encrypt_cfm(conn, status);
506 int hci_register_proto(struct hci_proto *hproto);
507 int hci_unregister_proto(struct hci_proto *hproto);
509 /* ----- HCI callbacks ----- */
511 struct list_head list;
515 void (*auth_cfm) (struct hci_conn *conn, __u8 status);
516 void (*encrypt_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
519 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
523 hci_proto_auth_cfm(conn, status);
525 read_lock_bh(&hci_cb_list_lock);
526 list_for_each(p, &hci_cb_list) {
527 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
529 cb->auth_cfm(conn, status);
531 read_unlock_bh(&hci_cb_list_lock);
534 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
538 hci_proto_encrypt_cfm(conn, status);
540 read_lock_bh(&hci_cb_list_lock);
541 list_for_each(p, &hci_cb_list) {
542 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
544 cb->encrypt_cfm(conn, status, encrypt);
546 read_unlock_bh(&hci_cb_list_lock);
549 int hci_register_cb(struct hci_cb *hcb);
550 int hci_unregister_cb(struct hci_cb *hcb);
552 int hci_register_notifier(struct notifier_block *nb);
553 int hci_unregister_notifier(struct notifier_block *nb);
555 int hci_send_cmd(struct hci_dev *hdev, __u16 ogf, __u16 ocf, __u32 plen, void *param);
556 int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
557 int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
559 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 ogf, __u16 ocf);
561 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
563 /* ----- HCI Sockets ----- */
564 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
566 /* HCI info for socket */
567 #define hci_pi(sk) ((struct hci_pinfo *)sk->sk_protinfo)
569 struct hci_dev *hdev;
570 struct hci_filter filter;
574 /* HCI security filter */
575 #define HCI_SFLT_MAX_OGF 5
577 struct hci_sec_filter {
580 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
583 /* ----- HCI requests ----- */
584 #define HCI_REQ_DONE 0
585 #define HCI_REQ_PEND 1
586 #define HCI_REQ_CANCELED 2
588 #define hci_req_lock(d) down(&d->req_lock)
589 #define hci_req_unlock(d) up(&d->req_lock)
591 void hci_req_complete(struct hci_dev *hdev, int result);
592 void hci_req_cancel(struct hci_dev *hdev, int err);
594 #endif /* __HCI_CORE_H */