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;
71 struct list_head list;
97 __u16 sniff_min_interval;
98 __u16 sniff_max_interval;
100 unsigned long quirks;
103 unsigned int acl_cnt;
104 unsigned int sco_cnt;
106 unsigned int acl_mtu;
107 unsigned int sco_mtu;
108 unsigned int acl_pkts;
109 unsigned int sco_pkts;
111 unsigned long cmd_last_tx;
112 unsigned long acl_last_tx;
113 unsigned long sco_last_tx;
115 struct workqueue_struct *workqueue;
117 struct tasklet_struct cmd_task;
118 struct tasklet_struct rx_task;
119 struct tasklet_struct tx_task;
121 struct sk_buff_head rx_q;
122 struct sk_buff_head raw_q;
123 struct sk_buff_head cmd_q;
125 struct sk_buff *sent_cmd;
126 struct sk_buff *reassembly[3];
128 struct mutex req_lock;
129 wait_queue_head_t req_wait_q;
133 struct inquiry_cache inq_cache;
134 struct hci_conn_hash conn_hash;
135 struct bdaddr_list blacklist;
137 struct hci_dev_stats stat;
139 struct sk_buff_head driver_init;
146 struct dentry *debugfs;
148 struct device *parent;
151 struct rfkill *rfkill;
153 struct module *owner;
155 int (*open)(struct hci_dev *hdev);
156 int (*close)(struct hci_dev *hdev);
157 int (*flush)(struct hci_dev *hdev);
158 int (*send)(struct sk_buff *skb);
159 void (*destruct)(struct hci_dev *hdev);
160 void (*notify)(struct hci_dev *hdev, unsigned int evt);
161 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
165 struct list_head list;
192 struct sk_buff_head data_q;
194 struct timer_list disc_timer;
195 struct timer_list idle_timer;
197 struct work_struct work_add;
198 struct work_struct work_del;
203 struct hci_dev *hdev;
208 struct hci_conn *link;
211 extern struct hci_proto *hci_proto[];
212 extern struct list_head hci_dev_list;
213 extern struct list_head hci_cb_list;
214 extern rwlock_t hci_dev_list_lock;
215 extern rwlock_t hci_cb_list_lock;
217 /* ----- Inquiry cache ----- */
218 #define INQUIRY_CACHE_AGE_MAX (HZ*30) // 30 seconds
219 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) // 60 seconds
221 #define inquiry_cache_lock(c) spin_lock(&c->lock)
222 #define inquiry_cache_unlock(c) spin_unlock(&c->lock)
223 #define inquiry_cache_lock_bh(c) spin_lock_bh(&c->lock)
224 #define inquiry_cache_unlock_bh(c) spin_unlock_bh(&c->lock)
226 static inline void inquiry_cache_init(struct hci_dev *hdev)
228 struct inquiry_cache *c = &hdev->inq_cache;
229 spin_lock_init(&c->lock);
233 static inline int inquiry_cache_empty(struct hci_dev *hdev)
235 struct inquiry_cache *c = &hdev->inq_cache;
236 return (c->list == NULL);
239 static inline long inquiry_cache_age(struct hci_dev *hdev)
241 struct inquiry_cache *c = &hdev->inq_cache;
242 return jiffies - c->timestamp;
245 static inline long inquiry_entry_age(struct inquiry_entry *e)
247 return jiffies - e->timestamp;
250 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
251 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
253 /* ----- HCI Connections ----- */
256 HCI_CONN_ENCRYPT_PEND,
257 HCI_CONN_RSWITCH_PEND,
258 HCI_CONN_MODE_CHANGE_PEND,
261 static inline void hci_conn_hash_init(struct hci_dev *hdev)
263 struct hci_conn_hash *h = &hdev->conn_hash;
264 INIT_LIST_HEAD(&h->list);
265 spin_lock_init(&h->lock);
270 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
272 struct hci_conn_hash *h = &hdev->conn_hash;
273 list_add(&c->list, &h->list);
274 if (c->type == ACL_LINK)
280 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
282 struct hci_conn_hash *h = &hdev->conn_hash;
284 if (c->type == ACL_LINK)
290 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
293 struct hci_conn_hash *h = &hdev->conn_hash;
297 list_for_each(p, &h->list) {
298 c = list_entry(p, struct hci_conn, list);
299 if (c->handle == handle)
305 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
306 __u8 type, bdaddr_t *ba)
308 struct hci_conn_hash *h = &hdev->conn_hash;
312 list_for_each(p, &h->list) {
313 c = list_entry(p, struct hci_conn, list);
314 if (c->type == type && !bacmp(&c->dst, ba))
320 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
321 __u8 type, __u16 state)
323 struct hci_conn_hash *h = &hdev->conn_hash;
327 list_for_each(p, &h->list) {
328 c = list_entry(p, struct hci_conn, list);
329 if (c->type == type && c->state == state)
335 void hci_acl_connect(struct hci_conn *conn);
336 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
337 void hci_add_sco(struct hci_conn *conn, __u16 handle);
338 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
340 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
341 int hci_conn_del(struct hci_conn *conn);
342 void hci_conn_hash_flush(struct hci_dev *hdev);
343 void hci_conn_check_pending(struct hci_dev *hdev);
345 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8 sec_level, __u8 auth_type);
346 int hci_conn_check_link_mode(struct hci_conn *conn);
347 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
348 int hci_conn_change_link_key(struct hci_conn *conn);
349 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
351 void hci_conn_enter_active_mode(struct hci_conn *conn);
352 void hci_conn_enter_sniff_mode(struct hci_conn *conn);
354 void hci_conn_hold_device(struct hci_conn *conn);
355 void hci_conn_put_device(struct hci_conn *conn);
357 static inline void hci_conn_hold(struct hci_conn *conn)
359 atomic_inc(&conn->refcnt);
360 del_timer(&conn->disc_timer);
363 static inline void hci_conn_put(struct hci_conn *conn)
365 if (atomic_dec_and_test(&conn->refcnt)) {
367 if (conn->type == ACL_LINK) {
368 del_timer(&conn->idle_timer);
369 if (conn->state == BT_CONNECTED) {
370 timeo = msecs_to_jiffies(conn->disc_timeout);
374 timeo = msecs_to_jiffies(10);
376 timeo = msecs_to_jiffies(10);
377 mod_timer(&conn->disc_timer, jiffies + timeo);
381 /* ----- HCI Devices ----- */
382 static inline void __hci_dev_put(struct hci_dev *d)
384 if (atomic_dec_and_test(&d->refcnt))
388 static inline void hci_dev_put(struct hci_dev *d)
391 module_put(d->owner);
394 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
396 atomic_inc(&d->refcnt);
400 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
402 if (try_module_get(d->owner))
403 return __hci_dev_hold(d);
407 #define hci_dev_lock(d) spin_lock(&d->lock)
408 #define hci_dev_unlock(d) spin_unlock(&d->lock)
409 #define hci_dev_lock_bh(d) spin_lock_bh(&d->lock)
410 #define hci_dev_unlock_bh(d) spin_unlock_bh(&d->lock)
412 struct hci_dev *hci_dev_get(int index);
413 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
415 struct hci_dev *hci_alloc_dev(void);
416 void hci_free_dev(struct hci_dev *hdev);
417 int hci_register_dev(struct hci_dev *hdev);
418 int hci_unregister_dev(struct hci_dev *hdev);
419 int hci_suspend_dev(struct hci_dev *hdev);
420 int hci_resume_dev(struct hci_dev *hdev);
421 int hci_dev_open(__u16 dev);
422 int hci_dev_close(__u16 dev);
423 int hci_dev_reset(__u16 dev);
424 int hci_dev_reset_stat(__u16 dev);
425 int hci_dev_cmd(unsigned int cmd, void __user *arg);
426 int hci_get_dev_list(void __user *arg);
427 int hci_get_dev_info(void __user *arg);
428 int hci_get_conn_list(void __user *arg);
429 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
430 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
431 int hci_inquiry(void __user *arg);
433 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
434 int hci_blacklist_clear(struct hci_dev *hdev);
436 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
438 int hci_recv_frame(struct sk_buff *skb);
439 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
441 int hci_register_sysfs(struct hci_dev *hdev);
442 void hci_unregister_sysfs(struct hci_dev *hdev);
443 void hci_conn_init_sysfs(struct hci_conn *conn);
444 void hci_conn_add_sysfs(struct hci_conn *conn);
445 void hci_conn_del_sysfs(struct hci_conn *conn);
447 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
449 /* ----- LMP capabilities ----- */
450 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
451 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
452 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
453 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
454 #define lmp_esco_capable(dev) ((dev)->features[3] & LMP_ESCO)
455 #define lmp_ssp_capable(dev) ((dev)->features[6] & LMP_SIMPLE_PAIR)
457 /* ----- HCI protocols ----- */
465 int (*connect_ind) (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
466 int (*connect_cfm) (struct hci_conn *conn, __u8 status);
467 int (*disconn_ind) (struct hci_conn *conn);
468 int (*disconn_cfm) (struct hci_conn *conn, __u8 reason);
469 int (*recv_acldata) (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
470 int (*recv_scodata) (struct hci_conn *conn, struct sk_buff *skb);
471 int (*security_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
474 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
476 register struct hci_proto *hp;
479 hp = hci_proto[HCI_PROTO_L2CAP];
480 if (hp && hp->connect_ind)
481 mask |= hp->connect_ind(hdev, bdaddr, type);
483 hp = hci_proto[HCI_PROTO_SCO];
484 if (hp && hp->connect_ind)
485 mask |= hp->connect_ind(hdev, bdaddr, type);
490 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
492 register struct hci_proto *hp;
494 hp = hci_proto[HCI_PROTO_L2CAP];
495 if (hp && hp->connect_cfm)
496 hp->connect_cfm(conn, status);
498 hp = hci_proto[HCI_PROTO_SCO];
499 if (hp && hp->connect_cfm)
500 hp->connect_cfm(conn, status);
503 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
505 register struct hci_proto *hp;
508 hp = hci_proto[HCI_PROTO_L2CAP];
509 if (hp && hp->disconn_ind)
510 reason = hp->disconn_ind(conn);
512 hp = hci_proto[HCI_PROTO_SCO];
513 if (hp && hp->disconn_ind)
514 reason = hp->disconn_ind(conn);
519 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
521 register struct hci_proto *hp;
523 hp = hci_proto[HCI_PROTO_L2CAP];
524 if (hp && hp->disconn_cfm)
525 hp->disconn_cfm(conn, reason);
527 hp = hci_proto[HCI_PROTO_SCO];
528 if (hp && hp->disconn_cfm)
529 hp->disconn_cfm(conn, reason);
532 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
534 register struct hci_proto *hp;
537 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
540 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
542 hp = hci_proto[HCI_PROTO_L2CAP];
543 if (hp && hp->security_cfm)
544 hp->security_cfm(conn, status, encrypt);
546 hp = hci_proto[HCI_PROTO_SCO];
547 if (hp && hp->security_cfm)
548 hp->security_cfm(conn, status, encrypt);
551 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
553 register struct hci_proto *hp;
555 hp = hci_proto[HCI_PROTO_L2CAP];
556 if (hp && hp->security_cfm)
557 hp->security_cfm(conn, status, encrypt);
559 hp = hci_proto[HCI_PROTO_SCO];
560 if (hp && hp->security_cfm)
561 hp->security_cfm(conn, status, encrypt);
564 int hci_register_proto(struct hci_proto *hproto);
565 int hci_unregister_proto(struct hci_proto *hproto);
567 /* ----- HCI callbacks ----- */
569 struct list_head list;
573 void (*security_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
574 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
575 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
578 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
583 hci_proto_auth_cfm(conn, status);
585 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
588 encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
590 read_lock_bh(&hci_cb_list_lock);
591 list_for_each(p, &hci_cb_list) {
592 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
593 if (cb->security_cfm)
594 cb->security_cfm(conn, status, encrypt);
596 read_unlock_bh(&hci_cb_list_lock);
599 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
603 if (conn->sec_level == BT_SECURITY_SDP)
604 conn->sec_level = BT_SECURITY_LOW;
606 hci_proto_encrypt_cfm(conn, status, encrypt);
608 read_lock_bh(&hci_cb_list_lock);
609 list_for_each(p, &hci_cb_list) {
610 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
611 if (cb->security_cfm)
612 cb->security_cfm(conn, status, encrypt);
614 read_unlock_bh(&hci_cb_list_lock);
617 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
621 read_lock_bh(&hci_cb_list_lock);
622 list_for_each(p, &hci_cb_list) {
623 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
624 if (cb->key_change_cfm)
625 cb->key_change_cfm(conn, status);
627 read_unlock_bh(&hci_cb_list_lock);
630 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, __u8 role)
634 read_lock_bh(&hci_cb_list_lock);
635 list_for_each(p, &hci_cb_list) {
636 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
637 if (cb->role_switch_cfm)
638 cb->role_switch_cfm(conn, status, role);
640 read_unlock_bh(&hci_cb_list_lock);
643 int hci_register_cb(struct hci_cb *hcb);
644 int hci_unregister_cb(struct hci_cb *hcb);
646 int hci_register_notifier(struct notifier_block *nb);
647 int hci_unregister_notifier(struct notifier_block *nb);
649 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
650 void hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
651 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
653 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
655 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
657 /* ----- HCI Sockets ----- */
658 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
660 /* HCI info for socket */
661 #define hci_pi(sk) ((struct hci_pinfo *) sk)
665 struct hci_dev *hdev;
666 struct hci_filter filter;
670 /* HCI security filter */
671 #define HCI_SFLT_MAX_OGF 5
673 struct hci_sec_filter {
676 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
679 /* ----- HCI requests ----- */
680 #define HCI_REQ_DONE 0
681 #define HCI_REQ_PEND 1
682 #define HCI_REQ_CANCELED 2
684 #define hci_req_lock(d) mutex_lock(&d->req_lock)
685 #define hci_req_unlock(d) mutex_unlock(&d->req_lock)
687 void hci_req_complete(struct hci_dev *hdev, int result);
689 #endif /* __HCI_CORE_H */