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;
122 struct sk_buff_head driver_init;
129 #ifdef CONFIG_PROC_FS
130 struct proc_dir_entry *proc;
133 struct class_device class_dev;
135 struct module *owner;
137 int (*open)(struct hci_dev *hdev);
138 int (*close)(struct hci_dev *hdev);
139 int (*flush)(struct hci_dev *hdev);
140 int (*send)(struct sk_buff *skb);
141 void (*destruct)(struct hci_dev *hdev);
142 void (*notify)(struct hci_dev *hdev, unsigned int evt);
143 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
147 struct list_head list;
163 struct sk_buff_head data_q;
165 struct timer_list timer;
167 struct hci_dev *hdev;
172 struct hci_conn *link;
175 extern struct hci_proto *hci_proto[];
176 extern struct list_head hci_dev_list;
177 extern struct list_head hci_cb_list;
178 extern rwlock_t hci_dev_list_lock;
179 extern rwlock_t hci_cb_list_lock;
181 /* ----- Inquiry cache ----- */
182 #define INQUIRY_CACHE_AGE_MAX (HZ*30) // 30 seconds
183 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) // 60 seconds
185 #define inquiry_cache_lock(c) spin_lock(&c->lock)
186 #define inquiry_cache_unlock(c) spin_unlock(&c->lock)
187 #define inquiry_cache_lock_bh(c) spin_lock_bh(&c->lock)
188 #define inquiry_cache_unlock_bh(c) spin_unlock_bh(&c->lock)
190 static inline void inquiry_cache_init(struct hci_dev *hdev)
192 struct inquiry_cache *c = &hdev->inq_cache;
193 spin_lock_init(&c->lock);
197 static inline int inquiry_cache_empty(struct hci_dev *hdev)
199 struct inquiry_cache *c = &hdev->inq_cache;
200 return (c->list == NULL);
203 static inline long inquiry_cache_age(struct hci_dev *hdev)
205 struct inquiry_cache *c = &hdev->inq_cache;
206 return jiffies - c->timestamp;
209 static inline long inquiry_entry_age(struct inquiry_entry *e)
211 return jiffies - e->timestamp;
214 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
215 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
217 /* ----- HCI Connections ----- */
220 HCI_CONN_ENCRYPT_PEND
223 static inline void hci_conn_hash_init(struct hci_dev *hdev)
225 struct hci_conn_hash *h = &hdev->conn_hash;
226 INIT_LIST_HEAD(&h->list);
227 spin_lock_init(&h->lock);
232 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
234 struct hci_conn_hash *h = &hdev->conn_hash;
235 list_add(&c->list, &h->list);
236 if (c->type == ACL_LINK)
242 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
244 struct hci_conn_hash *h = &hdev->conn_hash;
246 if (c->type == ACL_LINK)
252 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
255 struct hci_conn_hash *h = &hdev->conn_hash;
259 list_for_each(p, &h->list) {
260 c = list_entry(p, struct hci_conn, list);
261 if (c->handle == handle)
267 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
268 __u8 type, bdaddr_t *ba)
270 struct hci_conn_hash *h = &hdev->conn_hash;
274 list_for_each(p, &h->list) {
275 c = list_entry(p, struct hci_conn, list);
276 if (c->type == type && !bacmp(&c->dst, ba))
282 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
283 void hci_add_sco(struct hci_conn *conn, __u16 handle);
285 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
286 int hci_conn_del(struct hci_conn *conn);
287 void hci_conn_hash_flush(struct hci_dev *hdev);
289 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *src);
290 int hci_conn_auth(struct hci_conn *conn);
291 int hci_conn_encrypt(struct hci_conn *conn);
292 int hci_conn_change_link_key(struct hci_conn *conn);
294 static inline void hci_conn_set_timer(struct hci_conn *conn, unsigned long timeout)
296 mod_timer(&conn->timer, jiffies + timeout);
299 static inline void hci_conn_del_timer(struct hci_conn *conn)
301 del_timer(&conn->timer);
304 static inline void hci_conn_hold(struct hci_conn *conn)
306 atomic_inc(&conn->refcnt);
307 hci_conn_del_timer(conn);
310 static inline void hci_conn_put(struct hci_conn *conn)
312 if (atomic_dec_and_test(&conn->refcnt)) {
313 if (conn->type == ACL_LINK) {
314 unsigned long timeo = (conn->out) ?
315 HCI_DISCONN_TIMEOUT : HCI_DISCONN_TIMEOUT * 2;
316 hci_conn_set_timer(conn, timeo);
318 hci_conn_set_timer(conn, HZ / 100);
322 /* ----- HCI tasks ----- */
323 static inline void hci_sched_cmd(struct hci_dev *hdev)
325 tasklet_schedule(&hdev->cmd_task);
328 static inline void hci_sched_rx(struct hci_dev *hdev)
330 tasklet_schedule(&hdev->rx_task);
333 static inline void hci_sched_tx(struct hci_dev *hdev)
335 tasklet_schedule(&hdev->tx_task);
338 /* ----- HCI Devices ----- */
339 static inline void __hci_dev_put(struct hci_dev *d)
341 if (atomic_dec_and_test(&d->refcnt))
345 static inline void hci_dev_put(struct hci_dev *d)
348 module_put(d->owner);
351 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
353 atomic_inc(&d->refcnt);
357 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
359 if (try_module_get(d->owner))
360 return __hci_dev_hold(d);
364 #define hci_dev_lock(d) spin_lock(&d->lock)
365 #define hci_dev_unlock(d) spin_unlock(&d->lock)
366 #define hci_dev_lock_bh(d) spin_lock_bh(&d->lock)
367 #define hci_dev_unlock_bh(d) spin_unlock_bh(&d->lock)
369 struct hci_dev *hci_dev_get(int index);
370 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
372 struct hci_dev *hci_alloc_dev(void);
373 void hci_free_dev(struct hci_dev *hdev);
374 int hci_register_dev(struct hci_dev *hdev);
375 int hci_unregister_dev(struct hci_dev *hdev);
376 int hci_suspend_dev(struct hci_dev *hdev);
377 int hci_resume_dev(struct hci_dev *hdev);
378 int hci_dev_open(__u16 dev);
379 int hci_dev_close(__u16 dev);
380 int hci_dev_reset(__u16 dev);
381 int hci_dev_reset_stat(__u16 dev);
382 int hci_dev_cmd(unsigned int cmd, void __user *arg);
383 int hci_get_dev_list(void __user *arg);
384 int hci_get_dev_info(void __user *arg);
385 int hci_get_conn_list(void __user *arg);
386 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
387 int hci_inquiry(void __user *arg);
389 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
391 /* Receive frame from HCI drivers */
392 static inline int hci_recv_frame(struct sk_buff *skb)
394 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
395 if (!hdev || (!test_bit(HCI_UP, &hdev->flags)
396 && !test_bit(HCI_INIT, &hdev->flags))) {
402 bt_cb(skb)->incoming = 1;
405 do_gettimeofday(&skb->stamp);
407 /* Queue frame for rx task */
408 skb_queue_tail(&hdev->rx_q, skb);
413 int hci_register_sysfs(struct hci_dev *hdev);
414 void hci_unregister_sysfs(struct hci_dev *hdev);
416 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->class_dev.dev = (pdev))
418 /* ----- LMP capabilities ----- */
419 #define lmp_rswitch_capable(dev) (dev->features[0] & LMP_RSWITCH)
420 #define lmp_encrypt_capable(dev) (dev->features[0] & LMP_ENCRYPT)
422 /* ----- HCI protocols ----- */
430 int (*connect_ind) (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
431 int (*connect_cfm) (struct hci_conn *conn, __u8 status);
432 int (*disconn_ind) (struct hci_conn *conn, __u8 reason);
433 int (*recv_acldata) (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
434 int (*recv_scodata) (struct hci_conn *conn, struct sk_buff *skb);
435 int (*auth_cfm) (struct hci_conn *conn, __u8 status);
436 int (*encrypt_cfm) (struct hci_conn *conn, __u8 status);
439 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
441 register struct hci_proto *hp;
444 hp = hci_proto[HCI_PROTO_L2CAP];
445 if (hp && hp->connect_ind)
446 mask |= hp->connect_ind(hdev, bdaddr, type);
448 hp = hci_proto[HCI_PROTO_SCO];
449 if (hp && hp->connect_ind)
450 mask |= hp->connect_ind(hdev, bdaddr, type);
455 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
457 register struct hci_proto *hp;
459 hp = hci_proto[HCI_PROTO_L2CAP];
460 if (hp && hp->connect_cfm)
461 hp->connect_cfm(conn, status);
463 hp = hci_proto[HCI_PROTO_SCO];
464 if (hp && hp->connect_cfm)
465 hp->connect_cfm(conn, status);
468 static inline void hci_proto_disconn_ind(struct hci_conn *conn, __u8 reason)
470 register struct hci_proto *hp;
472 hp = hci_proto[HCI_PROTO_L2CAP];
473 if (hp && hp->disconn_ind)
474 hp->disconn_ind(conn, reason);
476 hp = hci_proto[HCI_PROTO_SCO];
477 if (hp && hp->disconn_ind)
478 hp->disconn_ind(conn, reason);
481 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
483 register struct hci_proto *hp;
485 hp = hci_proto[HCI_PROTO_L2CAP];
486 if (hp && hp->auth_cfm)
487 hp->auth_cfm(conn, status);
489 hp = hci_proto[HCI_PROTO_SCO];
490 if (hp && hp->auth_cfm)
491 hp->auth_cfm(conn, status);
494 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status)
496 register struct hci_proto *hp;
498 hp = hci_proto[HCI_PROTO_L2CAP];
499 if (hp && hp->encrypt_cfm)
500 hp->encrypt_cfm(conn, status);
502 hp = hci_proto[HCI_PROTO_SCO];
503 if (hp && hp->encrypt_cfm)
504 hp->encrypt_cfm(conn, status);
507 int hci_register_proto(struct hci_proto *hproto);
508 int hci_unregister_proto(struct hci_proto *hproto);
510 /* ----- HCI callbacks ----- */
512 struct list_head list;
516 void (*auth_cfm) (struct hci_conn *conn, __u8 status);
517 void (*encrypt_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
520 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
524 hci_proto_auth_cfm(conn, status);
526 read_lock_bh(&hci_cb_list_lock);
527 list_for_each(p, &hci_cb_list) {
528 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
530 cb->auth_cfm(conn, status);
532 read_unlock_bh(&hci_cb_list_lock);
535 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
539 hci_proto_encrypt_cfm(conn, status);
541 read_lock_bh(&hci_cb_list_lock);
542 list_for_each(p, &hci_cb_list) {
543 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
545 cb->encrypt_cfm(conn, status, encrypt);
547 read_unlock_bh(&hci_cb_list_lock);
550 int hci_register_cb(struct hci_cb *hcb);
551 int hci_unregister_cb(struct hci_cb *hcb);
553 int hci_register_notifier(struct notifier_block *nb);
554 int hci_unregister_notifier(struct notifier_block *nb);
556 int hci_send_cmd(struct hci_dev *hdev, __u16 ogf, __u16 ocf, __u32 plen, void *param);
557 int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
558 int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
560 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 ogf, __u16 ocf);
562 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
564 /* ----- HCI Sockets ----- */
565 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
567 /* HCI info for socket */
568 #define hci_pi(sk) ((struct hci_pinfo *)sk->sk_protinfo)
570 struct hci_dev *hdev;
571 struct hci_filter filter;
575 /* HCI security filter */
576 #define HCI_SFLT_MAX_OGF 5
578 struct hci_sec_filter {
581 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
584 /* ----- HCI requests ----- */
585 #define HCI_REQ_DONE 0
586 #define HCI_REQ_PEND 1
587 #define HCI_REQ_CANCELED 2
589 #define hci_req_lock(d) down(&d->req_lock)
590 #define hci_req_unlock(d) up(&d->req_lock)
592 void hci_req_complete(struct hci_dev *hdev, int result);
594 #endif /* __HCI_CORE_H */