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;
46 struct inquiry_entry {
47 struct inquiry_entry *next;
49 struct inquiry_data data;
52 struct inquiry_cache {
55 struct inquiry_entry *list;
58 struct hci_conn_hash {
59 struct list_head list;
66 struct list_head list;
91 __u16 sniff_min_interval;
92 __u16 sniff_max_interval;
100 unsigned int acl_mtu;
101 unsigned int sco_mtu;
102 unsigned int acl_pkts;
103 unsigned int sco_pkts;
105 unsigned long cmd_last_tx;
106 unsigned long acl_last_tx;
107 unsigned long sco_last_tx;
109 struct tasklet_struct cmd_task;
110 struct tasklet_struct rx_task;
111 struct tasklet_struct tx_task;
113 struct sk_buff_head rx_q;
114 struct sk_buff_head raw_q;
115 struct sk_buff_head cmd_q;
117 struct sk_buff *sent_cmd;
118 struct sk_buff *reassembly[3];
120 struct mutex req_lock;
121 wait_queue_head_t req_wait_q;
125 struct inquiry_cache inq_cache;
126 struct hci_conn_hash conn_hash;
128 struct hci_dev_stats stat;
130 struct sk_buff_head driver_init;
137 struct dentry *debugfs;
139 struct device *parent;
142 struct rfkill *rfkill;
144 struct module *owner;
146 int (*open)(struct hci_dev *hdev);
147 int (*close)(struct hci_dev *hdev);
148 int (*flush)(struct hci_dev *hdev);
149 int (*send)(struct sk_buff *skb);
150 void (*destruct)(struct hci_dev *hdev);
151 void (*notify)(struct hci_dev *hdev, unsigned int evt);
152 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
156 struct list_head list;
183 struct sk_buff_head data_q;
185 struct timer_list disc_timer;
186 struct timer_list idle_timer;
188 struct work_struct work_add;
189 struct work_struct work_del;
194 struct hci_dev *hdev;
199 struct hci_conn *link;
202 extern struct hci_proto *hci_proto[];
203 extern struct list_head hci_dev_list;
204 extern struct list_head hci_cb_list;
205 extern rwlock_t hci_dev_list_lock;
206 extern rwlock_t hci_cb_list_lock;
208 /* ----- Inquiry cache ----- */
209 #define INQUIRY_CACHE_AGE_MAX (HZ*30) // 30 seconds
210 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) // 60 seconds
212 #define inquiry_cache_lock(c) spin_lock(&c->lock)
213 #define inquiry_cache_unlock(c) spin_unlock(&c->lock)
214 #define inquiry_cache_lock_bh(c) spin_lock_bh(&c->lock)
215 #define inquiry_cache_unlock_bh(c) spin_unlock_bh(&c->lock)
217 static inline void inquiry_cache_init(struct hci_dev *hdev)
219 struct inquiry_cache *c = &hdev->inq_cache;
220 spin_lock_init(&c->lock);
224 static inline int inquiry_cache_empty(struct hci_dev *hdev)
226 struct inquiry_cache *c = &hdev->inq_cache;
227 return (c->list == NULL);
230 static inline long inquiry_cache_age(struct hci_dev *hdev)
232 struct inquiry_cache *c = &hdev->inq_cache;
233 return jiffies - c->timestamp;
236 static inline long inquiry_entry_age(struct inquiry_entry *e)
238 return jiffies - e->timestamp;
241 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
242 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
244 /* ----- HCI Connections ----- */
247 HCI_CONN_ENCRYPT_PEND,
248 HCI_CONN_RSWITCH_PEND,
249 HCI_CONN_MODE_CHANGE_PEND,
252 static inline void hci_conn_hash_init(struct hci_dev *hdev)
254 struct hci_conn_hash *h = &hdev->conn_hash;
255 INIT_LIST_HEAD(&h->list);
256 spin_lock_init(&h->lock);
261 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
263 struct hci_conn_hash *h = &hdev->conn_hash;
264 list_add(&c->list, &h->list);
265 if (c->type == ACL_LINK)
271 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
273 struct hci_conn_hash *h = &hdev->conn_hash;
275 if (c->type == ACL_LINK)
281 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
284 struct hci_conn_hash *h = &hdev->conn_hash;
288 list_for_each(p, &h->list) {
289 c = list_entry(p, struct hci_conn, list);
290 if (c->handle == handle)
296 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
297 __u8 type, bdaddr_t *ba)
299 struct hci_conn_hash *h = &hdev->conn_hash;
303 list_for_each(p, &h->list) {
304 c = list_entry(p, struct hci_conn, list);
305 if (c->type == type && !bacmp(&c->dst, ba))
311 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
312 __u8 type, __u16 state)
314 struct hci_conn_hash *h = &hdev->conn_hash;
318 list_for_each(p, &h->list) {
319 c = list_entry(p, struct hci_conn, list);
320 if (c->type == type && c->state == state)
326 void hci_acl_connect(struct hci_conn *conn);
327 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
328 void hci_add_sco(struct hci_conn *conn, __u16 handle);
329 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
331 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
332 int hci_conn_del(struct hci_conn *conn);
333 void hci_conn_hash_flush(struct hci_dev *hdev);
334 void hci_conn_check_pending(struct hci_dev *hdev);
336 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8 sec_level, __u8 auth_type);
337 int hci_conn_check_link_mode(struct hci_conn *conn);
338 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
339 int hci_conn_change_link_key(struct hci_conn *conn);
340 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
342 void hci_conn_enter_active_mode(struct hci_conn *conn);
343 void hci_conn_enter_sniff_mode(struct hci_conn *conn);
345 void hci_conn_hold_device(struct hci_conn *conn);
346 void hci_conn_put_device(struct hci_conn *conn);
348 static inline void hci_conn_hold(struct hci_conn *conn)
350 atomic_inc(&conn->refcnt);
351 del_timer(&conn->disc_timer);
354 static inline void hci_conn_put(struct hci_conn *conn)
356 if (atomic_dec_and_test(&conn->refcnt)) {
358 if (conn->type == ACL_LINK) {
359 del_timer(&conn->idle_timer);
360 if (conn->state == BT_CONNECTED) {
361 timeo = msecs_to_jiffies(conn->disc_timeout);
365 timeo = msecs_to_jiffies(10);
367 timeo = msecs_to_jiffies(10);
368 mod_timer(&conn->disc_timer, jiffies + timeo);
372 /* ----- HCI Devices ----- */
373 static inline void __hci_dev_put(struct hci_dev *d)
375 if (atomic_dec_and_test(&d->refcnt))
379 static inline void hci_dev_put(struct hci_dev *d)
382 module_put(d->owner);
385 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
387 atomic_inc(&d->refcnt);
391 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
393 if (try_module_get(d->owner))
394 return __hci_dev_hold(d);
398 #define hci_dev_lock(d) spin_lock(&d->lock)
399 #define hci_dev_unlock(d) spin_unlock(&d->lock)
400 #define hci_dev_lock_bh(d) spin_lock_bh(&d->lock)
401 #define hci_dev_unlock_bh(d) spin_unlock_bh(&d->lock)
403 struct hci_dev *hci_dev_get(int index);
404 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
406 struct hci_dev *hci_alloc_dev(void);
407 void hci_free_dev(struct hci_dev *hdev);
408 int hci_register_dev(struct hci_dev *hdev);
409 int hci_unregister_dev(struct hci_dev *hdev);
410 int hci_suspend_dev(struct hci_dev *hdev);
411 int hci_resume_dev(struct hci_dev *hdev);
412 int hci_dev_open(__u16 dev);
413 int hci_dev_close(__u16 dev);
414 int hci_dev_reset(__u16 dev);
415 int hci_dev_reset_stat(__u16 dev);
416 int hci_dev_cmd(unsigned int cmd, void __user *arg);
417 int hci_get_dev_list(void __user *arg);
418 int hci_get_dev_info(void __user *arg);
419 int hci_get_conn_list(void __user *arg);
420 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
421 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
422 int hci_inquiry(void __user *arg);
424 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
426 int hci_recv_frame(struct sk_buff *skb);
427 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
429 int hci_register_sysfs(struct hci_dev *hdev);
430 void hci_unregister_sysfs(struct hci_dev *hdev);
431 void hci_conn_init_sysfs(struct hci_conn *conn);
432 void hci_conn_add_sysfs(struct hci_conn *conn);
433 void hci_conn_del_sysfs(struct hci_conn *conn);
435 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
437 /* ----- LMP capabilities ----- */
438 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
439 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
440 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
441 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
442 #define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO)
443 #define lmp_ssp_capable(dev) ((dev)->features[6] & LMP_SIMPLE_PAIR)
445 /* ----- HCI protocols ----- */
453 int (*connect_ind) (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
454 int (*connect_cfm) (struct hci_conn *conn, __u8 status);
455 int (*disconn_ind) (struct hci_conn *conn);
456 int (*disconn_cfm) (struct hci_conn *conn, __u8 reason);
457 int (*recv_acldata) (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
458 int (*recv_scodata) (struct hci_conn *conn, struct sk_buff *skb);
459 int (*security_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
462 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
464 register struct hci_proto *hp;
467 hp = hci_proto[HCI_PROTO_L2CAP];
468 if (hp && hp->connect_ind)
469 mask |= hp->connect_ind(hdev, bdaddr, type);
471 hp = hci_proto[HCI_PROTO_SCO];
472 if (hp && hp->connect_ind)
473 mask |= hp->connect_ind(hdev, bdaddr, type);
478 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
480 register struct hci_proto *hp;
482 hp = hci_proto[HCI_PROTO_L2CAP];
483 if (hp && hp->connect_cfm)
484 hp->connect_cfm(conn, status);
486 hp = hci_proto[HCI_PROTO_SCO];
487 if (hp && hp->connect_cfm)
488 hp->connect_cfm(conn, status);
491 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
493 register struct hci_proto *hp;
496 hp = hci_proto[HCI_PROTO_L2CAP];
497 if (hp && hp->disconn_ind)
498 reason = hp->disconn_ind(conn);
500 hp = hci_proto[HCI_PROTO_SCO];
501 if (hp && hp->disconn_ind)
502 reason = hp->disconn_ind(conn);
507 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
509 register struct hci_proto *hp;
511 hp = hci_proto[HCI_PROTO_L2CAP];
512 if (hp && hp->disconn_cfm)
513 hp->disconn_cfm(conn, reason);
515 hp = hci_proto[HCI_PROTO_SCO];
516 if (hp && hp->disconn_cfm)
517 hp->disconn_cfm(conn, reason);
520 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
522 register struct hci_proto *hp;
525 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
528 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
530 hp = hci_proto[HCI_PROTO_L2CAP];
531 if (hp && hp->security_cfm)
532 hp->security_cfm(conn, status, encrypt);
534 hp = hci_proto[HCI_PROTO_SCO];
535 if (hp && hp->security_cfm)
536 hp->security_cfm(conn, status, encrypt);
539 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
541 register struct hci_proto *hp;
543 hp = hci_proto[HCI_PROTO_L2CAP];
544 if (hp && hp->security_cfm)
545 hp->security_cfm(conn, status, encrypt);
547 hp = hci_proto[HCI_PROTO_SCO];
548 if (hp && hp->security_cfm)
549 hp->security_cfm(conn, status, encrypt);
552 int hci_register_proto(struct hci_proto *hproto);
553 int hci_unregister_proto(struct hci_proto *hproto);
555 /* ----- HCI callbacks ----- */
557 struct list_head list;
561 void (*security_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
562 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
563 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
566 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
571 hci_proto_auth_cfm(conn, status);
573 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
576 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
578 read_lock_bh(&hci_cb_list_lock);
579 list_for_each(p, &hci_cb_list) {
580 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
581 if (cb->security_cfm)
582 cb->security_cfm(conn, status, encrypt);
584 read_unlock_bh(&hci_cb_list_lock);
587 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
591 if (conn->sec_level == BT_SECURITY_SDP)
592 conn->sec_level = BT_SECURITY_LOW;
594 hci_proto_encrypt_cfm(conn, status, encrypt);
596 read_lock_bh(&hci_cb_list_lock);
597 list_for_each(p, &hci_cb_list) {
598 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
599 if (cb->security_cfm)
600 cb->security_cfm(conn, status, encrypt);
602 read_unlock_bh(&hci_cb_list_lock);
605 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
609 read_lock_bh(&hci_cb_list_lock);
610 list_for_each(p, &hci_cb_list) {
611 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
612 if (cb->key_change_cfm)
613 cb->key_change_cfm(conn, status);
615 read_unlock_bh(&hci_cb_list_lock);
618 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, __u8 role)
622 read_lock_bh(&hci_cb_list_lock);
623 list_for_each(p, &hci_cb_list) {
624 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
625 if (cb->role_switch_cfm)
626 cb->role_switch_cfm(conn, status, role);
628 read_unlock_bh(&hci_cb_list_lock);
631 int hci_register_cb(struct hci_cb *hcb);
632 int hci_unregister_cb(struct hci_cb *hcb);
634 int hci_register_notifier(struct notifier_block *nb);
635 int hci_unregister_notifier(struct notifier_block *nb);
637 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
638 int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
639 int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
641 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
643 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
645 /* ----- HCI Sockets ----- */
646 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
648 /* HCI info for socket */
649 #define hci_pi(sk) ((struct hci_pinfo *) sk)
653 struct hci_dev *hdev;
654 struct hci_filter filter;
658 /* HCI security filter */
659 #define HCI_SFLT_MAX_OGF 5
661 struct hci_sec_filter {
664 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
667 /* ----- HCI requests ----- */
668 #define HCI_REQ_DONE 0
669 #define HCI_REQ_PEND 1
670 #define HCI_REQ_CANCELED 2
672 #define hci_req_lock(d) mutex_lock(&d->req_lock)
673 #define hci_req_unlock(d) mutex_unlock(&d->req_lock)
675 void hci_req_complete(struct hci_dev *hdev, int result);
677 #endif /* __HCI_CORE_H */