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;
90 __u16 sniff_min_interval;
91 __u16 sniff_max_interval;
100 unsigned int sco_mtu;
101 unsigned int acl_pkts;
102 unsigned int sco_pkts;
104 unsigned long cmd_last_tx;
105 unsigned long acl_last_tx;
106 unsigned long sco_last_tx;
108 struct tasklet_struct cmd_task;
109 struct tasklet_struct rx_task;
110 struct tasklet_struct tx_task;
112 struct sk_buff_head rx_q;
113 struct sk_buff_head raw_q;
114 struct sk_buff_head cmd_q;
116 struct sk_buff *sent_cmd;
117 struct sk_buff *reassembly[3];
119 struct semaphore req_lock;
120 wait_queue_head_t req_wait_q;
124 struct inquiry_cache inq_cache;
125 struct hci_conn_hash conn_hash;
127 struct hci_dev_stats stat;
129 struct sk_buff_head driver_init;
136 struct device *parent;
139 struct module *owner;
141 int (*open)(struct hci_dev *hdev);
142 int (*close)(struct hci_dev *hdev);
143 int (*flush)(struct hci_dev *hdev);
144 int (*send)(struct sk_buff *skb);
145 void (*destruct)(struct hci_dev *hdev);
146 void (*notify)(struct hci_dev *hdev, unsigned int evt);
147 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
151 struct list_head list;
174 struct sk_buff_head data_q;
176 struct timer_list disc_timer;
177 struct timer_list idle_timer;
179 struct work_struct work;
183 struct hci_dev *hdev;
188 struct hci_conn *link;
191 extern struct hci_proto *hci_proto[];
192 extern struct list_head hci_dev_list;
193 extern struct list_head hci_cb_list;
194 extern rwlock_t hci_dev_list_lock;
195 extern rwlock_t hci_cb_list_lock;
197 /* ----- Inquiry cache ----- */
198 #define INQUIRY_CACHE_AGE_MAX (HZ*30) // 30 seconds
199 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) // 60 seconds
201 #define inquiry_cache_lock(c) spin_lock(&c->lock)
202 #define inquiry_cache_unlock(c) spin_unlock(&c->lock)
203 #define inquiry_cache_lock_bh(c) spin_lock_bh(&c->lock)
204 #define inquiry_cache_unlock_bh(c) spin_unlock_bh(&c->lock)
206 static inline void inquiry_cache_init(struct hci_dev *hdev)
208 struct inquiry_cache *c = &hdev->inq_cache;
209 spin_lock_init(&c->lock);
213 static inline int inquiry_cache_empty(struct hci_dev *hdev)
215 struct inquiry_cache *c = &hdev->inq_cache;
216 return (c->list == NULL);
219 static inline long inquiry_cache_age(struct hci_dev *hdev)
221 struct inquiry_cache *c = &hdev->inq_cache;
222 return jiffies - c->timestamp;
225 static inline long inquiry_entry_age(struct inquiry_entry *e)
227 return jiffies - e->timestamp;
230 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
231 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
233 /* ----- HCI Connections ----- */
236 HCI_CONN_ENCRYPT_PEND,
237 HCI_CONN_RSWITCH_PEND,
238 HCI_CONN_MODE_CHANGE_PEND,
241 static inline void hci_conn_hash_init(struct hci_dev *hdev)
243 struct hci_conn_hash *h = &hdev->conn_hash;
244 INIT_LIST_HEAD(&h->list);
245 spin_lock_init(&h->lock);
250 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
252 struct hci_conn_hash *h = &hdev->conn_hash;
253 list_add(&c->list, &h->list);
254 if (c->type == ACL_LINK)
260 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
262 struct hci_conn_hash *h = &hdev->conn_hash;
264 if (c->type == ACL_LINK)
270 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
273 struct hci_conn_hash *h = &hdev->conn_hash;
277 list_for_each(p, &h->list) {
278 c = list_entry(p, struct hci_conn, list);
279 if (c->handle == handle)
285 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
286 __u8 type, bdaddr_t *ba)
288 struct hci_conn_hash *h = &hdev->conn_hash;
292 list_for_each(p, &h->list) {
293 c = list_entry(p, struct hci_conn, list);
294 if (c->type == type && !bacmp(&c->dst, ba))
300 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
301 __u8 type, __u16 state)
303 struct hci_conn_hash *h = &hdev->conn_hash;
307 list_for_each(p, &h->list) {
308 c = list_entry(p, struct hci_conn, list);
309 if (c->type == type && c->state == state)
315 void hci_acl_connect(struct hci_conn *conn);
316 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
317 void hci_add_sco(struct hci_conn *conn, __u16 handle);
318 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
320 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
321 int hci_conn_del(struct hci_conn *conn);
322 void hci_conn_hash_flush(struct hci_dev *hdev);
323 void hci_conn_check_pending(struct hci_dev *hdev);
325 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *src);
326 int hci_conn_auth(struct hci_conn *conn);
327 int hci_conn_encrypt(struct hci_conn *conn);
328 int hci_conn_change_link_key(struct hci_conn *conn);
329 int hci_conn_switch_role(struct hci_conn *conn, uint8_t role);
331 void hci_conn_enter_active_mode(struct hci_conn *conn);
332 void hci_conn_enter_sniff_mode(struct hci_conn *conn);
334 static inline void hci_conn_hold(struct hci_conn *conn)
336 atomic_inc(&conn->refcnt);
337 del_timer(&conn->disc_timer);
340 static inline void hci_conn_put(struct hci_conn *conn)
342 if (atomic_dec_and_test(&conn->refcnt)) {
344 if (conn->type == ACL_LINK) {
345 del_timer(&conn->idle_timer);
346 if (conn->state == BT_CONNECTED) {
347 timeo = msecs_to_jiffies(HCI_DISCONN_TIMEOUT);
351 timeo = msecs_to_jiffies(10);
353 timeo = msecs_to_jiffies(10);
354 mod_timer(&conn->disc_timer, jiffies + timeo);
358 /* ----- HCI tasks ----- */
359 static inline void hci_sched_cmd(struct hci_dev *hdev)
361 tasklet_schedule(&hdev->cmd_task);
364 static inline void hci_sched_rx(struct hci_dev *hdev)
366 tasklet_schedule(&hdev->rx_task);
369 static inline void hci_sched_tx(struct hci_dev *hdev)
371 tasklet_schedule(&hdev->tx_task);
374 /* ----- HCI Devices ----- */
375 static inline void __hci_dev_put(struct hci_dev *d)
377 if (atomic_dec_and_test(&d->refcnt))
381 static inline void hci_dev_put(struct hci_dev *d)
384 module_put(d->owner);
387 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
389 atomic_inc(&d->refcnt);
393 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
395 if (try_module_get(d->owner))
396 return __hci_dev_hold(d);
400 #define hci_dev_lock(d) spin_lock(&d->lock)
401 #define hci_dev_unlock(d) spin_unlock(&d->lock)
402 #define hci_dev_lock_bh(d) spin_lock_bh(&d->lock)
403 #define hci_dev_unlock_bh(d) spin_unlock_bh(&d->lock)
405 struct hci_dev *hci_dev_get(int index);
406 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
408 struct hci_dev *hci_alloc_dev(void);
409 void hci_free_dev(struct hci_dev *hdev);
410 int hci_register_dev(struct hci_dev *hdev);
411 int hci_unregister_dev(struct hci_dev *hdev);
412 int hci_suspend_dev(struct hci_dev *hdev);
413 int hci_resume_dev(struct hci_dev *hdev);
414 int hci_dev_open(__u16 dev);
415 int hci_dev_close(__u16 dev);
416 int hci_dev_reset(__u16 dev);
417 int hci_dev_reset_stat(__u16 dev);
418 int hci_dev_cmd(unsigned int cmd, void __user *arg);
419 int hci_get_dev_list(void __user *arg);
420 int hci_get_dev_info(void __user *arg);
421 int hci_get_conn_list(void __user *arg);
422 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
423 int hci_inquiry(void __user *arg);
425 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
427 /* Receive frame from HCI drivers */
428 static inline int hci_recv_frame(struct sk_buff *skb)
430 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
431 if (!hdev || (!test_bit(HCI_UP, &hdev->flags)
432 && !test_bit(HCI_INIT, &hdev->flags))) {
438 bt_cb(skb)->incoming = 1;
441 __net_timestamp(skb);
443 /* Queue frame for rx task */
444 skb_queue_tail(&hdev->rx_q, skb);
449 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
451 int hci_register_sysfs(struct hci_dev *hdev);
452 void hci_unregister_sysfs(struct hci_dev *hdev);
453 void hci_conn_add_sysfs(struct hci_conn *conn);
454 void hci_conn_del_sysfs(struct hci_conn *conn);
456 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
458 /* ----- LMP capabilities ----- */
459 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
460 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
461 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
462 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
463 #define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO)
465 /* ----- HCI protocols ----- */
473 int (*connect_ind) (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
474 int (*connect_cfm) (struct hci_conn *conn, __u8 status);
475 int (*disconn_ind) (struct hci_conn *conn, __u8 reason);
476 int (*recv_acldata) (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
477 int (*recv_scodata) (struct hci_conn *conn, struct sk_buff *skb);
478 int (*auth_cfm) (struct hci_conn *conn, __u8 status);
479 int (*encrypt_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
482 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
484 register struct hci_proto *hp;
487 hp = hci_proto[HCI_PROTO_L2CAP];
488 if (hp && hp->connect_ind)
489 mask |= hp->connect_ind(hdev, bdaddr, type);
491 hp = hci_proto[HCI_PROTO_SCO];
492 if (hp && hp->connect_ind)
493 mask |= hp->connect_ind(hdev, bdaddr, type);
498 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
500 register struct hci_proto *hp;
502 hp = hci_proto[HCI_PROTO_L2CAP];
503 if (hp && hp->connect_cfm)
504 hp->connect_cfm(conn, status);
506 hp = hci_proto[HCI_PROTO_SCO];
507 if (hp && hp->connect_cfm)
508 hp->connect_cfm(conn, status);
511 static inline void hci_proto_disconn_ind(struct hci_conn *conn, __u8 reason)
513 register struct hci_proto *hp;
515 hp = hci_proto[HCI_PROTO_L2CAP];
516 if (hp && hp->disconn_ind)
517 hp->disconn_ind(conn, reason);
519 hp = hci_proto[HCI_PROTO_SCO];
520 if (hp && hp->disconn_ind)
521 hp->disconn_ind(conn, reason);
524 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
526 register struct hci_proto *hp;
528 hp = hci_proto[HCI_PROTO_L2CAP];
529 if (hp && hp->auth_cfm)
530 hp->auth_cfm(conn, status);
532 hp = hci_proto[HCI_PROTO_SCO];
533 if (hp && hp->auth_cfm)
534 hp->auth_cfm(conn, status);
537 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
539 register struct hci_proto *hp;
541 hp = hci_proto[HCI_PROTO_L2CAP];
542 if (hp && hp->encrypt_cfm)
543 hp->encrypt_cfm(conn, status, encrypt);
545 hp = hci_proto[HCI_PROTO_SCO];
546 if (hp && hp->encrypt_cfm)
547 hp->encrypt_cfm(conn, status, encrypt);
550 int hci_register_proto(struct hci_proto *hproto);
551 int hci_unregister_proto(struct hci_proto *hproto);
553 /* ----- HCI callbacks ----- */
555 struct list_head list;
559 void (*auth_cfm) (struct hci_conn *conn, __u8 status);
560 void (*encrypt_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
561 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
562 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
565 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
569 hci_proto_auth_cfm(conn, status);
571 read_lock_bh(&hci_cb_list_lock);
572 list_for_each(p, &hci_cb_list) {
573 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
575 cb->auth_cfm(conn, status);
577 read_unlock_bh(&hci_cb_list_lock);
580 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
584 hci_proto_encrypt_cfm(conn, status, encrypt);
586 read_lock_bh(&hci_cb_list_lock);
587 list_for_each(p, &hci_cb_list) {
588 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
590 cb->encrypt_cfm(conn, status, encrypt);
592 read_unlock_bh(&hci_cb_list_lock);
595 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
599 read_lock_bh(&hci_cb_list_lock);
600 list_for_each(p, &hci_cb_list) {
601 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
602 if (cb->key_change_cfm)
603 cb->key_change_cfm(conn, status);
605 read_unlock_bh(&hci_cb_list_lock);
608 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, __u8 role)
612 read_lock_bh(&hci_cb_list_lock);
613 list_for_each(p, &hci_cb_list) {
614 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
615 if (cb->role_switch_cfm)
616 cb->role_switch_cfm(conn, status, role);
618 read_unlock_bh(&hci_cb_list_lock);
621 int hci_register_cb(struct hci_cb *hcb);
622 int hci_unregister_cb(struct hci_cb *hcb);
624 int hci_register_notifier(struct notifier_block *nb);
625 int hci_unregister_notifier(struct notifier_block *nb);
627 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
628 int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
629 int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
631 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
633 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
635 /* ----- HCI Sockets ----- */
636 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
638 /* HCI info for socket */
639 #define hci_pi(sk) ((struct hci_pinfo *) sk)
643 struct hci_dev *hdev;
644 struct hci_filter filter;
648 /* HCI security filter */
649 #define HCI_SFLT_MAX_OGF 5
651 struct hci_sec_filter {
654 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
657 /* ----- HCI requests ----- */
658 #define HCI_REQ_DONE 0
659 #define HCI_REQ_PEND 1
660 #define HCI_REQ_CANCELED 2
662 #define hci_req_lock(d) down(&d->req_lock)
663 #define hci_req_unlock(d) up(&d->req_lock)
665 void hci_req_complete(struct hci_dev *hdev, int result);
667 #endif /* __HCI_CORE_H */