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;
82 __u16 sniff_min_interval;
83 __u16 sniff_max_interval;
93 unsigned int acl_pkts;
94 unsigned int sco_pkts;
96 unsigned long cmd_last_tx;
97 unsigned long acl_last_tx;
98 unsigned long sco_last_tx;
100 struct tasklet_struct cmd_task;
101 struct tasklet_struct rx_task;
102 struct tasklet_struct tx_task;
104 struct sk_buff_head rx_q;
105 struct sk_buff_head raw_q;
106 struct sk_buff_head cmd_q;
108 struct sk_buff *sent_cmd;
110 struct semaphore req_lock;
111 wait_queue_head_t req_wait_q;
115 struct inquiry_cache inq_cache;
116 struct hci_conn_hash conn_hash;
118 struct hci_dev_stats stat;
120 struct sk_buff_head driver_init;
127 struct device *parent;
130 struct module *owner;
132 int (*open)(struct hci_dev *hdev);
133 int (*close)(struct hci_dev *hdev);
134 int (*flush)(struct hci_dev *hdev);
135 int (*send)(struct sk_buff *skb);
136 void (*destruct)(struct hci_dev *hdev);
137 void (*notify)(struct hci_dev *hdev, unsigned int evt);
138 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
142 struct list_head list;
163 struct sk_buff_head data_q;
165 struct timer_list disc_timer;
166 struct timer_list idle_timer;
168 struct work_struct work;
172 struct hci_dev *hdev;
177 struct hci_conn *link;
180 extern struct hci_proto *hci_proto[];
181 extern struct list_head hci_dev_list;
182 extern struct list_head hci_cb_list;
183 extern rwlock_t hci_dev_list_lock;
184 extern rwlock_t hci_cb_list_lock;
186 /* ----- Inquiry cache ----- */
187 #define INQUIRY_CACHE_AGE_MAX (HZ*30) // 30 seconds
188 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) // 60 seconds
190 #define inquiry_cache_lock(c) spin_lock(&c->lock)
191 #define inquiry_cache_unlock(c) spin_unlock(&c->lock)
192 #define inquiry_cache_lock_bh(c) spin_lock_bh(&c->lock)
193 #define inquiry_cache_unlock_bh(c) spin_unlock_bh(&c->lock)
195 static inline void inquiry_cache_init(struct hci_dev *hdev)
197 struct inquiry_cache *c = &hdev->inq_cache;
198 spin_lock_init(&c->lock);
202 static inline int inquiry_cache_empty(struct hci_dev *hdev)
204 struct inquiry_cache *c = &hdev->inq_cache;
205 return (c->list == NULL);
208 static inline long inquiry_cache_age(struct hci_dev *hdev)
210 struct inquiry_cache *c = &hdev->inq_cache;
211 return jiffies - c->timestamp;
214 static inline long inquiry_entry_age(struct inquiry_entry *e)
216 return jiffies - e->timestamp;
219 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
220 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
222 /* ----- HCI Connections ----- */
225 HCI_CONN_ENCRYPT_PEND,
226 HCI_CONN_RSWITCH_PEND,
227 HCI_CONN_MODE_CHANGE_PEND,
230 static inline void hci_conn_hash_init(struct hci_dev *hdev)
232 struct hci_conn_hash *h = &hdev->conn_hash;
233 INIT_LIST_HEAD(&h->list);
234 spin_lock_init(&h->lock);
239 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
241 struct hci_conn_hash *h = &hdev->conn_hash;
242 list_add(&c->list, &h->list);
243 if (c->type == ACL_LINK)
249 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
251 struct hci_conn_hash *h = &hdev->conn_hash;
253 if (c->type == ACL_LINK)
259 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
262 struct hci_conn_hash *h = &hdev->conn_hash;
266 list_for_each(p, &h->list) {
267 c = list_entry(p, struct hci_conn, list);
268 if (c->handle == handle)
274 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
275 __u8 type, bdaddr_t *ba)
277 struct hci_conn_hash *h = &hdev->conn_hash;
281 list_for_each(p, &h->list) {
282 c = list_entry(p, struct hci_conn, list);
283 if (c->type == type && !bacmp(&c->dst, ba))
289 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
290 void hci_add_sco(struct hci_conn *conn, __u16 handle);
292 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
293 int hci_conn_del(struct hci_conn *conn);
294 void hci_conn_hash_flush(struct hci_dev *hdev);
296 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *src);
297 int hci_conn_auth(struct hci_conn *conn);
298 int hci_conn_encrypt(struct hci_conn *conn);
299 int hci_conn_change_link_key(struct hci_conn *conn);
300 int hci_conn_switch_role(struct hci_conn *conn, uint8_t role);
302 void hci_conn_enter_active_mode(struct hci_conn *conn);
303 void hci_conn_enter_sniff_mode(struct hci_conn *conn);
305 static inline void hci_conn_hold(struct hci_conn *conn)
307 atomic_inc(&conn->refcnt);
308 del_timer(&conn->disc_timer);
311 static inline void hci_conn_put(struct hci_conn *conn)
313 if (atomic_dec_and_test(&conn->refcnt)) {
315 if (conn->type == ACL_LINK) {
316 timeo = msecs_to_jiffies(HCI_DISCONN_TIMEOUT);
319 del_timer(&conn->idle_timer);
321 timeo = msecs_to_jiffies(10);
322 mod_timer(&conn->disc_timer, jiffies + timeo);
326 /* ----- HCI tasks ----- */
327 static inline void hci_sched_cmd(struct hci_dev *hdev)
329 tasklet_schedule(&hdev->cmd_task);
332 static inline void hci_sched_rx(struct hci_dev *hdev)
334 tasklet_schedule(&hdev->rx_task);
337 static inline void hci_sched_tx(struct hci_dev *hdev)
339 tasklet_schedule(&hdev->tx_task);
342 /* ----- HCI Devices ----- */
343 static inline void __hci_dev_put(struct hci_dev *d)
345 if (atomic_dec_and_test(&d->refcnt))
349 static inline void hci_dev_put(struct hci_dev *d)
352 module_put(d->owner);
355 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
357 atomic_inc(&d->refcnt);
361 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
363 if (try_module_get(d->owner))
364 return __hci_dev_hold(d);
368 #define hci_dev_lock(d) spin_lock(&d->lock)
369 #define hci_dev_unlock(d) spin_unlock(&d->lock)
370 #define hci_dev_lock_bh(d) spin_lock_bh(&d->lock)
371 #define hci_dev_unlock_bh(d) spin_unlock_bh(&d->lock)
373 struct hci_dev *hci_dev_get(int index);
374 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
376 struct hci_dev *hci_alloc_dev(void);
377 void hci_free_dev(struct hci_dev *hdev);
378 int hci_register_dev(struct hci_dev *hdev);
379 int hci_unregister_dev(struct hci_dev *hdev);
380 int hci_suspend_dev(struct hci_dev *hdev);
381 int hci_resume_dev(struct hci_dev *hdev);
382 int hci_dev_open(__u16 dev);
383 int hci_dev_close(__u16 dev);
384 int hci_dev_reset(__u16 dev);
385 int hci_dev_reset_stat(__u16 dev);
386 int hci_dev_cmd(unsigned int cmd, void __user *arg);
387 int hci_get_dev_list(void __user *arg);
388 int hci_get_dev_info(void __user *arg);
389 int hci_get_conn_list(void __user *arg);
390 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
391 int hci_inquiry(void __user *arg);
393 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
395 /* Receive frame from HCI drivers */
396 static inline int hci_recv_frame(struct sk_buff *skb)
398 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
399 if (!hdev || (!test_bit(HCI_UP, &hdev->flags)
400 && !test_bit(HCI_INIT, &hdev->flags))) {
406 bt_cb(skb)->incoming = 1;
409 __net_timestamp(skb);
411 /* Queue frame for rx task */
412 skb_queue_tail(&hdev->rx_q, skb);
417 int hci_register_sysfs(struct hci_dev *hdev);
418 void hci_unregister_sysfs(struct hci_dev *hdev);
419 void hci_conn_add_sysfs(struct hci_conn *conn);
420 void hci_conn_del_sysfs(struct hci_conn *conn);
422 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
424 /* ----- LMP capabilities ----- */
425 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
426 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
427 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
428 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
430 /* ----- HCI protocols ----- */
438 int (*connect_ind) (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
439 int (*connect_cfm) (struct hci_conn *conn, __u8 status);
440 int (*disconn_ind) (struct hci_conn *conn, __u8 reason);
441 int (*recv_acldata) (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
442 int (*recv_scodata) (struct hci_conn *conn, struct sk_buff *skb);
443 int (*auth_cfm) (struct hci_conn *conn, __u8 status);
444 int (*encrypt_cfm) (struct hci_conn *conn, __u8 status);
447 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
449 register struct hci_proto *hp;
452 hp = hci_proto[HCI_PROTO_L2CAP];
453 if (hp && hp->connect_ind)
454 mask |= hp->connect_ind(hdev, bdaddr, type);
456 hp = hci_proto[HCI_PROTO_SCO];
457 if (hp && hp->connect_ind)
458 mask |= hp->connect_ind(hdev, bdaddr, type);
463 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
465 register struct hci_proto *hp;
467 hp = hci_proto[HCI_PROTO_L2CAP];
468 if (hp && hp->connect_cfm)
469 hp->connect_cfm(conn, status);
471 hp = hci_proto[HCI_PROTO_SCO];
472 if (hp && hp->connect_cfm)
473 hp->connect_cfm(conn, status);
476 static inline void hci_proto_disconn_ind(struct hci_conn *conn, __u8 reason)
478 register struct hci_proto *hp;
480 hp = hci_proto[HCI_PROTO_L2CAP];
481 if (hp && hp->disconn_ind)
482 hp->disconn_ind(conn, reason);
484 hp = hci_proto[HCI_PROTO_SCO];
485 if (hp && hp->disconn_ind)
486 hp->disconn_ind(conn, reason);
489 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
491 register struct hci_proto *hp;
493 hp = hci_proto[HCI_PROTO_L2CAP];
494 if (hp && hp->auth_cfm)
495 hp->auth_cfm(conn, status);
497 hp = hci_proto[HCI_PROTO_SCO];
498 if (hp && hp->auth_cfm)
499 hp->auth_cfm(conn, status);
502 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status)
504 register struct hci_proto *hp;
506 hp = hci_proto[HCI_PROTO_L2CAP];
507 if (hp && hp->encrypt_cfm)
508 hp->encrypt_cfm(conn, status);
510 hp = hci_proto[HCI_PROTO_SCO];
511 if (hp && hp->encrypt_cfm)
512 hp->encrypt_cfm(conn, status);
515 int hci_register_proto(struct hci_proto *hproto);
516 int hci_unregister_proto(struct hci_proto *hproto);
518 /* ----- HCI callbacks ----- */
520 struct list_head list;
524 void (*auth_cfm) (struct hci_conn *conn, __u8 status);
525 void (*encrypt_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
526 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
527 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
530 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
534 hci_proto_auth_cfm(conn, status);
536 read_lock_bh(&hci_cb_list_lock);
537 list_for_each(p, &hci_cb_list) {
538 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
540 cb->auth_cfm(conn, status);
542 read_unlock_bh(&hci_cb_list_lock);
545 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
549 hci_proto_encrypt_cfm(conn, status);
551 read_lock_bh(&hci_cb_list_lock);
552 list_for_each(p, &hci_cb_list) {
553 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
555 cb->encrypt_cfm(conn, status, encrypt);
557 read_unlock_bh(&hci_cb_list_lock);
560 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
564 read_lock_bh(&hci_cb_list_lock);
565 list_for_each(p, &hci_cb_list) {
566 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
567 if (cb->key_change_cfm)
568 cb->key_change_cfm(conn, status);
570 read_unlock_bh(&hci_cb_list_lock);
573 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, __u8 role)
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);
580 if (cb->role_switch_cfm)
581 cb->role_switch_cfm(conn, status, role);
583 read_unlock_bh(&hci_cb_list_lock);
586 int hci_register_cb(struct hci_cb *hcb);
587 int hci_unregister_cb(struct hci_cb *hcb);
589 int hci_register_notifier(struct notifier_block *nb);
590 int hci_unregister_notifier(struct notifier_block *nb);
592 int hci_send_cmd(struct hci_dev *hdev, __u16 ogf, __u16 ocf, __u32 plen, void *param);
593 int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
594 int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
596 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 ogf, __u16 ocf);
598 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
600 /* ----- HCI Sockets ----- */
601 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
603 /* HCI info for socket */
604 #define hci_pi(sk) ((struct hci_pinfo *) sk)
608 struct hci_dev *hdev;
609 struct hci_filter filter;
613 /* HCI security filter */
614 #define HCI_SFLT_MAX_OGF 5
616 struct hci_sec_filter {
619 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
622 /* ----- HCI requests ----- */
623 #define HCI_REQ_DONE 0
624 #define HCI_REQ_PEND 1
625 #define HCI_REQ_CANCELED 2
627 #define hci_req_lock(d) down(&d->req_lock)
628 #define hci_req_unlock(d) up(&d->req_lock)
630 void hci_req_complete(struct hci_dev *hdev, int result);
632 #endif /* __HCI_CORE_H */