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 */
41 struct inquiry_entry {
42 struct inquiry_entry *next;
44 struct inquiry_info info;
47 struct inquiry_cache {
50 struct inquiry_entry *list;
53 struct hci_conn_hash {
54 struct list_head list;
60 struct list_head list;
84 unsigned int acl_pkts;
85 unsigned int sco_pkts;
87 unsigned long cmd_last_tx;
88 unsigned long acl_last_tx;
89 unsigned long sco_last_tx;
91 struct tasklet_struct cmd_task;
92 struct tasklet_struct rx_task;
93 struct tasklet_struct tx_task;
95 struct sk_buff_head rx_q;
96 struct sk_buff_head raw_q;
97 struct sk_buff_head cmd_q;
99 struct sk_buff *sent_cmd;
101 struct semaphore req_lock;
102 wait_queue_head_t req_wait_q;
106 struct inquiry_cache inq_cache;
107 struct hci_conn_hash conn_hash;
109 struct hci_dev_stats stat;
116 #ifdef CONFIG_PROC_FS
117 struct proc_dir_entry *proc;
120 struct class_device class_dev;
122 struct module *owner;
124 int (*open)(struct hci_dev *hdev);
125 int (*close)(struct hci_dev *hdev);
126 int (*flush)(struct hci_dev *hdev);
127 int (*send)(struct sk_buff *skb);
128 void (*destruct)(struct hci_dev *hdev);
129 void (*notify)(struct hci_dev *hdev, unsigned int evt);
130 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
134 struct list_head list;
149 struct sk_buff_head data_q;
151 struct timer_list timer;
153 struct hci_dev *hdev;
158 struct hci_conn *link;
161 extern struct hci_proto *hci_proto[];
162 extern struct list_head hci_dev_list;
163 extern rwlock_t hci_dev_list_lock;
165 /* ----- Inquiry cache ----- */
166 #define INQUIRY_CACHE_AGE_MAX (HZ*30) // 30 seconds
167 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) // 60 seconds
169 #define inquiry_cache_lock(c) spin_lock(&c->lock)
170 #define inquiry_cache_unlock(c) spin_unlock(&c->lock)
171 #define inquiry_cache_lock_bh(c) spin_lock_bh(&c->lock)
172 #define inquiry_cache_unlock_bh(c) spin_unlock_bh(&c->lock)
174 static inline void inquiry_cache_init(struct hci_dev *hdev)
176 struct inquiry_cache *c = &hdev->inq_cache;
177 spin_lock_init(&c->lock);
181 static inline int inquiry_cache_empty(struct hci_dev *hdev)
183 struct inquiry_cache *c = &hdev->inq_cache;
184 return (c->list == NULL);
187 static inline long inquiry_cache_age(struct hci_dev *hdev)
189 struct inquiry_cache *c = &hdev->inq_cache;
190 return jiffies - c->timestamp;
193 static inline long inquiry_entry_age(struct inquiry_entry *e)
195 return jiffies - e->timestamp;
198 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
199 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_info *info);
201 /* ----- HCI Connections ----- */
204 HCI_CONN_ENCRYPT_PEND
207 static inline void hci_conn_hash_init(struct hci_dev *hdev)
209 struct hci_conn_hash *h = &hdev->conn_hash;
210 INIT_LIST_HEAD(&h->list);
211 spin_lock_init(&h->lock);
215 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
217 struct hci_conn_hash *h = &hdev->conn_hash;
218 list_add(&c->list, &h->list);
222 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
224 struct hci_conn_hash *h = &hdev->conn_hash;
229 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
232 struct hci_conn_hash *h = &hdev->conn_hash;
236 list_for_each(p, &h->list) {
237 c = list_entry(p, struct hci_conn, list);
238 if (c->handle == handle)
244 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
245 __u8 type, bdaddr_t *ba)
247 struct hci_conn_hash *h = &hdev->conn_hash;
251 list_for_each(p, &h->list) {
252 c = list_entry(p, struct hci_conn, list);
253 if (c->type == type && !bacmp(&c->dst, ba))
259 void hci_acl_connect(struct hci_conn *conn);
260 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
261 void hci_add_sco(struct hci_conn *conn, __u16 handle);
263 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
264 int hci_conn_del(struct hci_conn *conn);
265 void hci_conn_hash_flush(struct hci_dev *hdev);
267 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *src);
268 int hci_conn_auth(struct hci_conn *conn);
269 int hci_conn_encrypt(struct hci_conn *conn);
271 static inline void hci_conn_set_timer(struct hci_conn *conn, unsigned long timeout)
273 mod_timer(&conn->timer, jiffies + timeout);
276 static inline void hci_conn_del_timer(struct hci_conn *conn)
278 del_timer(&conn->timer);
281 static inline void hci_conn_hold(struct hci_conn *conn)
283 atomic_inc(&conn->refcnt);
284 hci_conn_del_timer(conn);
287 static inline void hci_conn_put(struct hci_conn *conn)
289 if (atomic_dec_and_test(&conn->refcnt)) {
290 if (conn->type == ACL_LINK) {
291 unsigned long timeo = (conn->out) ?
292 HCI_DISCONN_TIMEOUT : HCI_DISCONN_TIMEOUT * 2;
293 hci_conn_set_timer(conn, timeo);
295 hci_conn_set_timer(conn, HZ / 100);
299 /* ----- HCI tasks ----- */
300 static inline void hci_sched_cmd(struct hci_dev *hdev)
302 tasklet_schedule(&hdev->cmd_task);
305 static inline void hci_sched_rx(struct hci_dev *hdev)
307 tasklet_schedule(&hdev->rx_task);
310 static inline void hci_sched_tx(struct hci_dev *hdev)
312 tasklet_schedule(&hdev->tx_task);
315 /* ----- HCI Devices ----- */
316 static inline void __hci_dev_put(struct hci_dev *d)
318 if (atomic_dec_and_test(&d->refcnt))
322 static inline void hci_dev_put(struct hci_dev *d)
325 module_put(d->owner);
328 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
330 atomic_inc(&d->refcnt);
334 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
336 if (try_module_get(d->owner))
337 return __hci_dev_hold(d);
341 #define hci_dev_lock(d) spin_lock(&d->lock)
342 #define hci_dev_unlock(d) spin_unlock(&d->lock)
343 #define hci_dev_lock_bh(d) spin_lock_bh(&d->lock)
344 #define hci_dev_unlock_bh(d) spin_unlock_bh(&d->lock)
346 struct hci_dev *hci_dev_get(int index);
347 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
349 struct hci_dev *hci_alloc_dev(void);
350 void hci_free_dev(struct hci_dev *hdev);
351 int hci_register_dev(struct hci_dev *hdev);
352 int hci_unregister_dev(struct hci_dev *hdev);
353 int hci_suspend_dev(struct hci_dev *hdev);
354 int hci_resume_dev(struct hci_dev *hdev);
355 int hci_dev_open(__u16 dev);
356 int hci_dev_close(__u16 dev);
357 int hci_dev_reset(__u16 dev);
358 int hci_dev_reset_stat(__u16 dev);
359 int hci_dev_cmd(unsigned int cmd, void __user *arg);
360 int hci_get_dev_list(void __user *arg);
361 int hci_get_dev_info(void __user *arg);
362 int hci_get_conn_list(void __user *arg);
363 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
364 int hci_inquiry(void __user *arg);
366 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
368 /* Receive frame from HCI drivers */
369 static inline int hci_recv_frame(struct sk_buff *skb)
371 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
372 if (!hdev || (!test_bit(HCI_UP, &hdev->flags)
373 && !test_bit(HCI_INIT, &hdev->flags))) {
379 bt_cb(skb)->incoming = 1;
382 do_gettimeofday(&skb->stamp);
384 /* Queue frame for rx task */
385 skb_queue_tail(&hdev->rx_q, skb);
390 int hci_register_sysfs(struct hci_dev *hdev);
391 void hci_unregister_sysfs(struct hci_dev *hdev);
393 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->class_dev.dev = (pdev))
395 /* ----- LMP capabilities ----- */
396 #define lmp_rswitch_capable(dev) (dev->features[0] & LMP_RSWITCH)
397 #define lmp_encrypt_capable(dev) (dev->features[0] & LMP_ENCRYPT)
399 /* ----- HCI protocols ----- */
407 int (*connect_ind) (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
408 int (*connect_cfm) (struct hci_conn *conn, __u8 status);
409 int (*disconn_ind) (struct hci_conn *conn, __u8 reason);
410 int (*recv_acldata) (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
411 int (*recv_scodata) (struct hci_conn *conn, struct sk_buff *skb);
412 int (*auth_cfm) (struct hci_conn *conn, __u8 status);
413 int (*encrypt_cfm) (struct hci_conn *conn, __u8 status);
416 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
418 register struct hci_proto *hp;
421 hp = hci_proto[HCI_PROTO_L2CAP];
422 if (hp && hp->connect_ind)
423 mask |= hp->connect_ind(hdev, bdaddr, type);
425 hp = hci_proto[HCI_PROTO_SCO];
426 if (hp && hp->connect_ind)
427 mask |= hp->connect_ind(hdev, bdaddr, type);
432 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
434 register struct hci_proto *hp;
436 hp = hci_proto[HCI_PROTO_L2CAP];
437 if (hp && hp->connect_cfm)
438 hp->connect_cfm(conn, status);
440 hp = hci_proto[HCI_PROTO_SCO];
441 if (hp && hp->connect_cfm)
442 hp->connect_cfm(conn, status);
445 static inline void hci_proto_disconn_ind(struct hci_conn *conn, __u8 reason)
447 register struct hci_proto *hp;
449 hp = hci_proto[HCI_PROTO_L2CAP];
450 if (hp && hp->disconn_ind)
451 hp->disconn_ind(conn, reason);
453 hp = hci_proto[HCI_PROTO_SCO];
454 if (hp && hp->disconn_ind)
455 hp->disconn_ind(conn, reason);
458 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
460 register struct hci_proto *hp;
462 hp = hci_proto[HCI_PROTO_L2CAP];
463 if (hp && hp->auth_cfm)
464 hp->auth_cfm(conn, status);
466 hp = hci_proto[HCI_PROTO_SCO];
467 if (hp && hp->auth_cfm)
468 hp->auth_cfm(conn, status);
471 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status)
473 register struct hci_proto *hp;
475 hp = hci_proto[HCI_PROTO_L2CAP];
476 if (hp && hp->encrypt_cfm)
477 hp->encrypt_cfm(conn, status);
479 hp = hci_proto[HCI_PROTO_SCO];
480 if (hp && hp->encrypt_cfm)
481 hp->encrypt_cfm(conn, status);
484 int hci_register_proto(struct hci_proto *hproto);
485 int hci_unregister_proto(struct hci_proto *hproto);
486 int hci_register_notifier(struct notifier_block *nb);
487 int hci_unregister_notifier(struct notifier_block *nb);
489 int hci_send_cmd(struct hci_dev *hdev, __u16 ogf, __u16 ocf, __u32 plen, void *param);
490 int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
491 int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
493 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 ogf, __u16 ocf);
495 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
497 /* ----- HCI Sockets ----- */
498 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
500 /* HCI info for socket */
501 #define hci_pi(sk) ((struct hci_pinfo *)sk->sk_protinfo)
503 struct hci_dev *hdev;
504 struct hci_filter filter;
508 /* HCI security filter */
509 #define HCI_SFLT_MAX_OGF 5
511 struct hci_sec_filter {
514 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
517 /* ----- HCI requests ----- */
518 #define HCI_REQ_DONE 0
519 #define HCI_REQ_PEND 1
520 #define HCI_REQ_CANCELED 2
522 #define hci_req_lock(d) down(&d->req_lock)
523 #define hci_req_unlock(d) up(&d->req_lock)
525 void hci_req_complete(struct hci_dev *hdev, int result);
526 void hci_req_cancel(struct hci_dev *hdev, int err);
528 #endif /* __HCI_CORE_H */