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;
85 __u16 sniff_min_interval;
86 __u16 sniff_max_interval;
96 unsigned int acl_pkts;
97 unsigned int sco_pkts;
99 unsigned long cmd_last_tx;
100 unsigned long acl_last_tx;
101 unsigned long sco_last_tx;
103 struct tasklet_struct cmd_task;
104 struct tasklet_struct rx_task;
105 struct tasklet_struct tx_task;
107 struct sk_buff_head rx_q;
108 struct sk_buff_head raw_q;
109 struct sk_buff_head cmd_q;
111 struct sk_buff *sent_cmd;
113 struct semaphore req_lock;
114 wait_queue_head_t req_wait_q;
118 struct inquiry_cache inq_cache;
119 struct hci_conn_hash conn_hash;
121 struct hci_dev_stats stat;
123 struct sk_buff_head driver_init;
130 struct device *parent;
133 struct module *owner;
135 int (*open)(struct hci_dev *hdev);
136 int (*close)(struct hci_dev *hdev);
137 int (*flush)(struct hci_dev *hdev);
138 int (*send)(struct sk_buff *skb);
139 void (*destruct)(struct hci_dev *hdev);
140 void (*notify)(struct hci_dev *hdev, unsigned int evt);
141 int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
145 struct list_head list;
166 struct sk_buff_head data_q;
168 struct timer_list disc_timer;
169 struct timer_list idle_timer;
171 struct work_struct work;
175 struct hci_dev *hdev;
180 struct hci_conn *link;
183 extern struct hci_proto *hci_proto[];
184 extern struct list_head hci_dev_list;
185 extern struct list_head hci_cb_list;
186 extern rwlock_t hci_dev_list_lock;
187 extern rwlock_t hci_cb_list_lock;
189 /* ----- Inquiry cache ----- */
190 #define INQUIRY_CACHE_AGE_MAX (HZ*30) // 30 seconds
191 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) // 60 seconds
193 #define inquiry_cache_lock(c) spin_lock(&c->lock)
194 #define inquiry_cache_unlock(c) spin_unlock(&c->lock)
195 #define inquiry_cache_lock_bh(c) spin_lock_bh(&c->lock)
196 #define inquiry_cache_unlock_bh(c) spin_unlock_bh(&c->lock)
198 static inline void inquiry_cache_init(struct hci_dev *hdev)
200 struct inquiry_cache *c = &hdev->inq_cache;
201 spin_lock_init(&c->lock);
205 static inline int inquiry_cache_empty(struct hci_dev *hdev)
207 struct inquiry_cache *c = &hdev->inq_cache;
208 return (c->list == NULL);
211 static inline long inquiry_cache_age(struct hci_dev *hdev)
213 struct inquiry_cache *c = &hdev->inq_cache;
214 return jiffies - c->timestamp;
217 static inline long inquiry_entry_age(struct inquiry_entry *e)
219 return jiffies - e->timestamp;
222 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
223 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
225 /* ----- HCI Connections ----- */
228 HCI_CONN_ENCRYPT_PEND,
229 HCI_CONN_RSWITCH_PEND,
230 HCI_CONN_MODE_CHANGE_PEND,
233 static inline void hci_conn_hash_init(struct hci_dev *hdev)
235 struct hci_conn_hash *h = &hdev->conn_hash;
236 INIT_LIST_HEAD(&h->list);
237 spin_lock_init(&h->lock);
242 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
244 struct hci_conn_hash *h = &hdev->conn_hash;
245 list_add(&c->list, &h->list);
246 if (c->type == ACL_LINK)
252 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
254 struct hci_conn_hash *h = &hdev->conn_hash;
256 if (c->type == ACL_LINK)
262 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
265 struct hci_conn_hash *h = &hdev->conn_hash;
269 list_for_each(p, &h->list) {
270 c = list_entry(p, struct hci_conn, list);
271 if (c->handle == handle)
277 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
278 __u8 type, bdaddr_t *ba)
280 struct hci_conn_hash *h = &hdev->conn_hash;
284 list_for_each(p, &h->list) {
285 c = list_entry(p, struct hci_conn, list);
286 if (c->type == type && !bacmp(&c->dst, ba))
292 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
293 void hci_add_sco(struct hci_conn *conn, __u16 handle);
295 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
296 int hci_conn_del(struct hci_conn *conn);
297 void hci_conn_hash_flush(struct hci_dev *hdev);
299 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *src);
300 int hci_conn_auth(struct hci_conn *conn);
301 int hci_conn_encrypt(struct hci_conn *conn);
302 int hci_conn_change_link_key(struct hci_conn *conn);
303 int hci_conn_switch_role(struct hci_conn *conn, uint8_t role);
305 void hci_conn_enter_active_mode(struct hci_conn *conn);
306 void hci_conn_enter_sniff_mode(struct hci_conn *conn);
308 static inline void hci_conn_hold(struct hci_conn *conn)
310 atomic_inc(&conn->refcnt);
311 del_timer(&conn->disc_timer);
314 static inline void hci_conn_put(struct hci_conn *conn)
316 if (atomic_dec_and_test(&conn->refcnt)) {
318 if (conn->type == ACL_LINK) {
319 timeo = msecs_to_jiffies(HCI_DISCONN_TIMEOUT);
322 del_timer(&conn->idle_timer);
324 timeo = msecs_to_jiffies(10);
325 mod_timer(&conn->disc_timer, jiffies + timeo);
329 /* ----- HCI tasks ----- */
330 static inline void hci_sched_cmd(struct hci_dev *hdev)
332 tasklet_schedule(&hdev->cmd_task);
335 static inline void hci_sched_rx(struct hci_dev *hdev)
337 tasklet_schedule(&hdev->rx_task);
340 static inline void hci_sched_tx(struct hci_dev *hdev)
342 tasklet_schedule(&hdev->tx_task);
345 /* ----- HCI Devices ----- */
346 static inline void __hci_dev_put(struct hci_dev *d)
348 if (atomic_dec_and_test(&d->refcnt))
352 static inline void hci_dev_put(struct hci_dev *d)
355 module_put(d->owner);
358 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
360 atomic_inc(&d->refcnt);
364 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
366 if (try_module_get(d->owner))
367 return __hci_dev_hold(d);
371 #define hci_dev_lock(d) spin_lock(&d->lock)
372 #define hci_dev_unlock(d) spin_unlock(&d->lock)
373 #define hci_dev_lock_bh(d) spin_lock_bh(&d->lock)
374 #define hci_dev_unlock_bh(d) spin_unlock_bh(&d->lock)
376 struct hci_dev *hci_dev_get(int index);
377 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
379 struct hci_dev *hci_alloc_dev(void);
380 void hci_free_dev(struct hci_dev *hdev);
381 int hci_register_dev(struct hci_dev *hdev);
382 int hci_unregister_dev(struct hci_dev *hdev);
383 int hci_suspend_dev(struct hci_dev *hdev);
384 int hci_resume_dev(struct hci_dev *hdev);
385 int hci_dev_open(__u16 dev);
386 int hci_dev_close(__u16 dev);
387 int hci_dev_reset(__u16 dev);
388 int hci_dev_reset_stat(__u16 dev);
389 int hci_dev_cmd(unsigned int cmd, void __user *arg);
390 int hci_get_dev_list(void __user *arg);
391 int hci_get_dev_info(void __user *arg);
392 int hci_get_conn_list(void __user *arg);
393 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
394 int hci_inquiry(void __user *arg);
396 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
398 /* Receive frame from HCI drivers */
399 static inline int hci_recv_frame(struct sk_buff *skb)
401 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
402 if (!hdev || (!test_bit(HCI_UP, &hdev->flags)
403 && !test_bit(HCI_INIT, &hdev->flags))) {
409 bt_cb(skb)->incoming = 1;
412 __net_timestamp(skb);
414 /* Queue frame for rx task */
415 skb_queue_tail(&hdev->rx_q, skb);
420 int hci_register_sysfs(struct hci_dev *hdev);
421 void hci_unregister_sysfs(struct hci_dev *hdev);
422 void hci_conn_add_sysfs(struct hci_conn *conn);
423 void hci_conn_del_sysfs(struct hci_conn *conn);
425 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
427 /* ----- LMP capabilities ----- */
428 #define lmp_rswitch_capable(dev) ((dev)->features[0] & LMP_RSWITCH)
429 #define lmp_encrypt_capable(dev) ((dev)->features[0] & LMP_ENCRYPT)
430 #define lmp_sniff_capable(dev) ((dev)->features[0] & LMP_SNIFF)
431 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
433 /* ----- HCI protocols ----- */
441 int (*connect_ind) (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
442 int (*connect_cfm) (struct hci_conn *conn, __u8 status);
443 int (*disconn_ind) (struct hci_conn *conn, __u8 reason);
444 int (*recv_acldata) (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
445 int (*recv_scodata) (struct hci_conn *conn, struct sk_buff *skb);
446 int (*auth_cfm) (struct hci_conn *conn, __u8 status);
447 int (*encrypt_cfm) (struct hci_conn *conn, __u8 status);
450 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
452 register struct hci_proto *hp;
455 hp = hci_proto[HCI_PROTO_L2CAP];
456 if (hp && hp->connect_ind)
457 mask |= hp->connect_ind(hdev, bdaddr, type);
459 hp = hci_proto[HCI_PROTO_SCO];
460 if (hp && hp->connect_ind)
461 mask |= hp->connect_ind(hdev, bdaddr, type);
466 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
468 register struct hci_proto *hp;
470 hp = hci_proto[HCI_PROTO_L2CAP];
471 if (hp && hp->connect_cfm)
472 hp->connect_cfm(conn, status);
474 hp = hci_proto[HCI_PROTO_SCO];
475 if (hp && hp->connect_cfm)
476 hp->connect_cfm(conn, status);
479 static inline void hci_proto_disconn_ind(struct hci_conn *conn, __u8 reason)
481 register struct hci_proto *hp;
483 hp = hci_proto[HCI_PROTO_L2CAP];
484 if (hp && hp->disconn_ind)
485 hp->disconn_ind(conn, reason);
487 hp = hci_proto[HCI_PROTO_SCO];
488 if (hp && hp->disconn_ind)
489 hp->disconn_ind(conn, reason);
492 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
494 register struct hci_proto *hp;
496 hp = hci_proto[HCI_PROTO_L2CAP];
497 if (hp && hp->auth_cfm)
498 hp->auth_cfm(conn, status);
500 hp = hci_proto[HCI_PROTO_SCO];
501 if (hp && hp->auth_cfm)
502 hp->auth_cfm(conn, status);
505 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status)
507 register struct hci_proto *hp;
509 hp = hci_proto[HCI_PROTO_L2CAP];
510 if (hp && hp->encrypt_cfm)
511 hp->encrypt_cfm(conn, status);
513 hp = hci_proto[HCI_PROTO_SCO];
514 if (hp && hp->encrypt_cfm)
515 hp->encrypt_cfm(conn, status);
518 int hci_register_proto(struct hci_proto *hproto);
519 int hci_unregister_proto(struct hci_proto *hproto);
521 /* ----- HCI callbacks ----- */
523 struct list_head list;
527 void (*auth_cfm) (struct hci_conn *conn, __u8 status);
528 void (*encrypt_cfm) (struct hci_conn *conn, __u8 status, __u8 encrypt);
529 void (*key_change_cfm) (struct hci_conn *conn, __u8 status);
530 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
533 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
537 hci_proto_auth_cfm(conn, status);
539 read_lock_bh(&hci_cb_list_lock);
540 list_for_each(p, &hci_cb_list) {
541 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
543 cb->auth_cfm(conn, status);
545 read_unlock_bh(&hci_cb_list_lock);
548 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
552 hci_proto_encrypt_cfm(conn, status);
554 read_lock_bh(&hci_cb_list_lock);
555 list_for_each(p, &hci_cb_list) {
556 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
558 cb->encrypt_cfm(conn, status, encrypt);
560 read_unlock_bh(&hci_cb_list_lock);
563 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
567 read_lock_bh(&hci_cb_list_lock);
568 list_for_each(p, &hci_cb_list) {
569 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
570 if (cb->key_change_cfm)
571 cb->key_change_cfm(conn, status);
573 read_unlock_bh(&hci_cb_list_lock);
576 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, __u8 role)
580 read_lock_bh(&hci_cb_list_lock);
581 list_for_each(p, &hci_cb_list) {
582 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
583 if (cb->role_switch_cfm)
584 cb->role_switch_cfm(conn, status, role);
586 read_unlock_bh(&hci_cb_list_lock);
589 int hci_register_cb(struct hci_cb *hcb);
590 int hci_unregister_cb(struct hci_cb *hcb);
592 int hci_register_notifier(struct notifier_block *nb);
593 int hci_unregister_notifier(struct notifier_block *nb);
595 int hci_send_cmd(struct hci_dev *hdev, __u16 ogf, __u16 ocf, __u32 plen, void *param);
596 int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
597 int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
599 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 ogf, __u16 ocf);
601 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
603 /* ----- HCI Sockets ----- */
604 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
606 /* HCI info for socket */
607 #define hci_pi(sk) ((struct hci_pinfo *) sk)
611 struct hci_dev *hdev;
612 struct hci_filter filter;
616 /* HCI security filter */
617 #define HCI_SFLT_MAX_OGF 5
619 struct hci_sec_filter {
622 __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
625 /* ----- HCI requests ----- */
626 #define HCI_REQ_DONE 0
627 #define HCI_REQ_PEND 1
628 #define HCI_REQ_CANCELED 2
630 #define hci_req_lock(d) down(&d->req_lock)
631 #define hci_req_unlock(d) up(&d->req_lock)
633 void hci_req_complete(struct hci_dev *hdev, int result);
635 #endif /* __HCI_CORE_H */