1 /* $OpenBSD: hci_misc.c,v 1.1 2007/05/30 03:42:53 uwe Exp $ */
2 /* $NetBSD: hci_misc.c,v 1.1 2006/06/19 15:44:45 gdamore Exp $ */
3 /* $DragonFly: src/sys/netbt/hci_misc.c,v 1.1 2007/12/30 20:02:56 hasso Exp $ */
6 * Copyright (c) 2005 Iain Hibbert.
7 * Copyright (c) 2006 Itronix Inc.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. The name of Itronix Inc. may not be used to endorse
19 * or promote products derived from this software without specific
20 * prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
26 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
27 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
29 * ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
35 #include <sys/cdefs.h>
37 #include <sys/param.h>
38 #include <sys/kernel.h>
39 #include <sys/malloc.h>
42 #include <sys/queue.h>
43 #include <sys/systm.h>
45 #include <netbt/bluetooth.h>
46 #include <netbt/hci.h>
49 * cache Inquiry Responses for this number of seconds for routing
52 int hci_memo_expiry
= 600;
55 * set 'src' address for routing to 'dest'
58 hci_route_lookup(bdaddr_t
*src
, bdaddr_t
*dest
)
60 struct hci_unit
*unit
;
61 struct hci_link
*link
;
62 struct hci_memo
*memo
;
65 * Walk the ACL connections, if we have a connection
66 * to 'dest' already then thats best..
68 TAILQ_FOREACH(unit
, &hci_unit_list
, hci_next
) {
69 if ((unit
->hci_flags
& BTF_UP
) == 0)
72 TAILQ_FOREACH(link
, &unit
->hci_links
, hl_next
) {
73 if (link
->hl_type
!= HCI_LINK_ACL
)
76 if (bdaddr_same(&link
->hl_bdaddr
, dest
))
82 * Now check all the memos to see if there has been an
85 TAILQ_FOREACH(unit
, &hci_unit_list
, hci_next
) {
86 if ((unit
->hci_flags
& BTF_UP
) == 0)
89 memo
= hci_memo_find(unit
, dest
);
95 * Last ditch effort, lets use the first unit we find
96 * thats up and running. (XXX settable default route?)
98 TAILQ_FOREACH(unit
, &hci_unit_list
, hci_next
) {
99 if ((unit
->hci_flags
& BTF_UP
) == 0)
108 bdaddr_copy(src
, &unit
->hci_bdaddr
);
113 * find unit memo from bdaddr
116 hci_memo_find(struct hci_unit
*unit
, bdaddr_t
*bdaddr
)
118 struct hci_memo
*memo
, *m0
;
123 m0
= LIST_FIRST(&unit
->hci_memos
);
124 while ((memo
= m0
) != NULL
) {
125 m0
= LIST_NEXT(memo
, next
);
127 if (now
.tv_sec
> memo
->time
.tv_sec
+ hci_memo_expiry
) {
128 DPRINTF("memo %p too old (expiring)\n", memo
);
133 if (bdaddr_same(bdaddr
, &memo
->response
.bdaddr
)) {
134 DPRINTF("memo %p found\n", memo
);
139 DPRINTF("no memo found\n");
144 hci_memo_free(struct hci_memo
*memo
)
147 LIST_REMOVE(memo
, next
);
148 kfree(memo
, M_BLUETOOTH
);