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.
26 * $Id: hci_core.h,v 1.3 2002/04/17 18:55:21 maxk Exp $
32 #include <linux/proc_fs.h>
33 #include <net/bluetooth/hci.h>
35 /* HCI upper protocols */
36 #define HCI_PROTO_L2CAP 0
37 #define HCI_PROTO_SCO 1
39 #define HCI_INIT_TIMEOUT (HZ * 10)
41 extern struct proc_dir_entry *proc_bt_hci;
43 /* HCI Core structures */
45 struct inquiry_entry {
46 struct inquiry_entry *next;
48 struct inquiry_info info;
51 struct inquiry_cache {
54 struct inquiry_entry *list;
57 struct hci_conn_hash {
58 struct list_head list;
64 struct list_head list;
88 unsigned int acl_pkts;
89 unsigned int sco_pkts;
91 unsigned long cmd_last_tx;
92 unsigned long acl_last_tx;
93 unsigned long sco_last_tx;
95 struct tasklet_struct cmd_task;
96 struct tasklet_struct rx_task;
97 struct tasklet_struct tx_task;
99 struct sk_buff_head rx_q;
100 struct sk_buff_head raw_q;
101 struct sk_buff_head cmd_q;
103 struct sk_buff *sent_cmd;
105 struct semaphore req_lock;
106 wait_queue_head_t req_wait_q;
110 struct inquiry_cache inq_cache;
111 struct hci_conn_hash conn_hash;
113 struct hci_dev_stats stat;
120 #ifdef CONFIG_PROC_FS
121 struct proc_dir_entry *proc;
124 struct class_device class_dev;
126 struct module *owner;
128 int (*open)(struct hci_dev *hdev);
129 int (*close)(struct hci_dev *hdev);
130 int (*flush)(struct hci_dev *hdev);
131 int (*send)(struct sk_buff *skb);
132 void (*destruct)(struct hci_dev *hdev);
133 void (*notify)(struct hci_dev *hdev, unsigned int evt);
134 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
138 struct list_head list;
153 struct sk_buff_head data_q;
155 struct timer_list timer;
157 struct hci_dev *hdev;
162 struct hci_conn *link;
165 extern struct hci_proto *hci_proto[];
166 extern struct list_head hci_dev_list;
167 extern rwlock_t hci_dev_list_lock;
169 /* ----- Inquiry cache ----- */
170 #define INQUIRY_CACHE_AGE_MAX (HZ*30) // 30 seconds
171 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) // 60 seconds
173 #define inquiry_cache_lock(c) spin_lock(&c->lock)
174 #define inquiry_cache_unlock(c) spin_unlock(&c->lock)
175 #define inquiry_cache_lock_bh(c) spin_lock_bh(&c->lock)
176 #define inquiry_cache_unlock_bh(c) spin_unlock_bh(&c->lock)
178 static inline void inquiry_cache_init(struct hci_dev *hdev)
180 struct inquiry_cache *c = &hdev->inq_cache;
181 spin_lock_init(&c->lock);
185 static inline int inquiry_cache_empty(struct hci_dev *hdev)
187 struct inquiry_cache *c = &hdev->inq_cache;
188 return (c->list == NULL);
191 static inline long inquiry_cache_age(struct hci_dev *hdev)
193 struct inquiry_cache *c = &hdev->inq_cache;
194 return jiffies - c->timestamp;
197 static inline long inquiry_entry_age(struct inquiry_entry *e)
199 return jiffies - e->timestamp;
202 struct inquiry_entry *inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
203 void inquiry_cache_update(struct hci_dev *hdev, struct inquiry_info *info);
204 void inquiry_cache_flush(struct hci_dev *hdev);
205 int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf);
207 /* ----- HCI Connections ----- */
210 HCI_CONN_ENCRYPT_PEND
213 static inline void hci_conn_hash_init(struct hci_dev *hdev)
215 struct hci_conn_hash *h = &hdev->conn_hash;
216 INIT_LIST_HEAD(&h->list);
217 spin_lock_init(&h->lock);
221 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
223 struct hci_conn_hash *h = &hdev->conn_hash;
224 list_add(&c->list, &h->list);
228 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
230 struct hci_conn_hash *h = &hdev->conn_hash;
235 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
238 struct hci_conn_hash *h = &hdev->conn_hash;
242 list_for_each(p, &h->list) {
243 c = list_entry(p, struct hci_conn, list);
244 if (c->handle == handle)
250 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
251 __u8 type, bdaddr_t *ba)
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->type == type && !bacmp(&c->dst, ba))
265 void hci_acl_connect(struct hci_conn *conn);
266 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
267 void hci_add_sco(struct hci_conn *conn, __u16 handle);
269 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
270 int hci_conn_del(struct hci_conn *conn);
271 void hci_conn_hash_flush(struct hci_dev *hdev);
273 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *src);
274 int hci_conn_auth(struct hci_conn *conn);
275 int hci_conn_encrypt(struct hci_conn *conn);
277 static inline void hci_conn_set_timer(struct hci_conn *conn, unsigned long timeout)
279 mod_timer(&conn->timer, jiffies + timeout);
282 static inline void hci_conn_del_timer(struct hci_conn *conn)
284 del_timer(&conn->timer);
287 static inline void hci_conn_hold(struct hci_conn *conn)
289 atomic_inc(&conn->refcnt);
290 hci_conn_del_timer(conn);
293 static inline void hci_conn_put(struct hci_conn *conn)
295 if (atomic_dec_and_test(&conn->refcnt)) {
296 if (conn->type == ACL_LINK) {
297 unsigned long timeo = (conn->out) ?
298 HCI_DISCONN_TIMEOUT : HCI_DISCONN_TIMEOUT * 2;
299 hci_conn_set_timer(conn, timeo);
301 hci_conn_set_timer(conn, HZ / 100);
305 /* ----- HCI tasks ----- */
306 static inline void hci_sched_cmd(struct hci_dev *hdev)
308 tasklet_schedule(&hdev->cmd_task);
311 static inline void hci_sched_rx(struct hci_dev *hdev)
313 tasklet_schedule(&hdev->rx_task);
316 static inline void hci_sched_tx(struct hci_dev *hdev)
318 tasklet_schedule(&hdev->tx_task);
321 /* ----- HCI Devices ----- */
322 static inline void __hci_dev_put(struct hci_dev *d)
324 if (atomic_dec_and_test(&d->refcnt))
328 static inline void hci_dev_put(struct hci_dev *d)
331 module_put(d->owner);
334 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
336 atomic_inc(&d->refcnt);
340 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
342 if (try_module_get(d->owner))
343 return __hci_dev_hold(d);
347 #define hci_dev_lock(d) spin_lock(&d->lock)
348 #define hci_dev_unlock(d) spin_unlock(&d->lock)
349 #define hci_dev_lock_bh(d) spin_lock_bh(&d->lock)
350 #define hci_dev_unlock_bh(d) spin_unlock_bh(&d->lock)
352 struct hci_dev *hci_dev_get(int index);
353 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
355 struct hci_dev *hci_alloc_dev(void);
356 void hci_free_dev(struct hci_dev *hdev);
357 int hci_register_dev(struct hci_dev *hdev);
358 int hci_unregister_dev(struct hci_dev *hdev);
359 int hci_suspend_dev(struct hci_dev *hdev);
360 int hci_resume_dev(struct hci_dev *hdev);
361 int hci_dev_open(__u16 dev);
362 int hci_dev_close(__u16 dev);
363 int hci_dev_reset(__u16 dev);
364 int hci_dev_reset_stat(__u16 dev);
365 int hci_dev_cmd(unsigned int cmd, unsigned long arg);
366 int hci_get_dev_list(unsigned long arg);
367 int hci_get_dev_info(unsigned long arg);
368 int hci_get_conn_list(unsigned long arg);
369 int hci_get_conn_info(struct hci_dev *hdev, unsigned long arg);
370 int hci_inquiry(unsigned long arg);
372 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
374 /* Receive frame from HCI drivers */
375 static inline int hci_recv_frame(struct sk_buff *skb)
377 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
378 if (!hdev || (!test_bit(HCI_UP, &hdev->flags)
379 && !test_bit(HCI_INIT, &hdev->flags))) {
385 bt_cb(skb)->incoming = 1;
388 do_gettimeofday(&skb->stamp);
390 /* Queue frame for rx task */
391 skb_queue_tail(&hdev->rx_q, skb);
396 int hci_register_sysfs(struct hci_dev *hdev);
397 void hci_unregister_sysfs(struct hci_dev *hdev);
399 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->class_dev.dev = (pdev))
401 /* ----- LMP capabilities ----- */
402 #define lmp_rswitch_capable(dev) (dev->features[0] & LMP_RSWITCH)
403 #define lmp_encrypt_capable(dev) (dev->features[0] & LMP_ENCRYPT)
405 /* ----- HCI protocols ----- */
413 int (*connect_ind) (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
414 int (*connect_cfm) (struct hci_conn *conn, __u8 status);
415 int (*disconn_ind) (struct hci_conn *conn, __u8 reason);
416 int (*recv_acldata) (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
417 int (*recv_scodata) (struct hci_conn *conn, struct sk_buff *skb);
418 int (*auth_cfm) (struct hci_conn *conn, __u8 status);
419 int (*encrypt_cfm) (struct hci_conn *conn, __u8 status);
422 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
424 register struct hci_proto *hp;
427 hp = hci_proto[HCI_PROTO_L2CAP];
428 if (hp && hp->connect_ind)
429 mask |= hp->connect_ind(hdev, bdaddr, type);
431 hp = hci_proto[HCI_PROTO_SCO];
432 if (hp && hp->connect_ind)
433 mask |= hp->connect_ind(hdev, bdaddr, type);
438 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
440 register struct hci_proto *hp;
442 hp = hci_proto[HCI_PROTO_L2CAP];
443 if (hp && hp->connect_cfm)
444 hp->connect_cfm(conn, status);
446 hp = hci_proto[HCI_PROTO_SCO];
447 if (hp && hp->connect_cfm)
448 hp->connect_cfm(conn, status);
451 static inline void hci_proto_disconn_ind(struct hci_conn *conn, __u8 reason)
453 register struct hci_proto *hp;
455 hp = hci_proto[HCI_PROTO_L2CAP];
456 if (hp && hp->disconn_ind)
457 hp->disconn_ind(conn, reason);
459 hp = hci_proto[HCI_PROTO_SCO];
460 if (hp && hp->disconn_ind)
461 hp->disconn_ind(conn, reason);
464 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
466 register struct hci_proto *hp;
468 hp = hci_proto[HCI_PROTO_L2CAP];
469 if (hp && hp->auth_cfm)
470 hp->auth_cfm(conn, status);
472 hp = hci_proto[HCI_PROTO_SCO];
473 if (hp && hp->auth_cfm)
474 hp->auth_cfm(conn, status);
477 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status)
479 register struct hci_proto *hp;
481 hp = hci_proto[HCI_PROTO_L2CAP];
482 if (hp && hp->encrypt_cfm)
483 hp->encrypt_cfm(conn, status);
485 hp = hci_proto[HCI_PROTO_SCO];
486 if (hp && hp->encrypt_cfm)
487 hp->encrypt_cfm(conn, status);
490 int hci_register_proto(struct hci_proto *hproto);
491 int hci_unregister_proto(struct hci_proto *hproto);
492 int hci_register_notifier(struct notifier_block *nb);
493 int hci_unregister_notifier(struct notifier_block *nb);
495 int hci_send_cmd(struct hci_dev *hdev, __u16 ogf, __u16 ocf, __u32 plen, void *param);
496 int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
497 int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
499 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 ogf, __u16 ocf);
501 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
503 /* ----- HCI Sockets ----- */
504 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
506 /* HCI info for socket */
507 #define hci_pi(sk) ((struct hci_pinfo *)sk->sk_protinfo)
509 struct hci_dev *hdev;
510 struct hci_filter filter;
514 /* HCI security filter */
515 #define HCI_SFLT_MAX_OGF 5
517 struct hci_sec_filter {
520 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
523 /* ----- HCI requests ----- */
524 #define HCI_REQ_DONE 0
525 #define HCI_REQ_PEND 1
526 #define HCI_REQ_CANCELED 2
528 #define hci_req_lock(d) down(&d->req_lock)
529 #define hci_req_unlock(d) up(&d->req_lock)
531 void hci_req_complete(struct hci_dev *hdev, int result);
532 void hci_req_cancel(struct hci_dev *hdev, int err);
534 #endif /* __HCI_CORE_H */