a5c89047c0
NetBSD Foundation Membership still pending.) This stack was written by Iain under sponsorship from Itronix Inc. The stack includes support for rfcomm networking (networking via your bluetooth enabled cell phone), hid devices (keyboards/mice), and headsets. Drivers for both PCMCIA and USB bluetooth controllers are included.
149 lines
3.8 KiB
C
149 lines
3.8 KiB
C
/* $NetBSD: hci_misc.c,v 1.1 2006/06/19 15:44:45 gdamore Exp $ */
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/*-
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* Copyright (c) 2005 Iain Hibbert.
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* Copyright (c) 2006 Itronix Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of Itronix Inc. may not be used to endorse
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* or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: hci_misc.c,v 1.1 2006/06/19 15:44:45 gdamore Exp $");
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/proc.h>
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#include <sys/queue.h>
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#include <sys/systm.h>
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#include <netbt/bluetooth.h>
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#include <netbt/hci.h>
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/*
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* cache Inquiry Responses for this number of seconds for routing
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* purposes [sysctl]
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*/
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int hci_memo_expiry = 600;
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/*
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* set 'src' address for routing to 'dest'
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*/
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int
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hci_route_lookup(bdaddr_t *src, bdaddr_t *dest)
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{
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struct hci_unit *unit;
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struct hci_link *link;
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struct hci_memo *memo;
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/*
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* Walk the ACL connections, if we have a connection
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* to 'dest' already then thats best..
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*/
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SIMPLEQ_FOREACH(unit, &hci_unit_list, hci_next) {
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if ((unit->hci_flags & BTF_UP) == 0)
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continue;
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TAILQ_FOREACH(link, &unit->hci_links, hl_next) {
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if (link->hl_type != HCI_LINK_ACL)
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continue;
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if (bdaddr_same(&link->hl_bdaddr, dest))
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goto found;
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}
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}
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/*
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* Now check all the memos to see if there has been an
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* inquiry repsonse..
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*/
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SIMPLEQ_FOREACH(unit, &hci_unit_list, hci_next) {
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if ((unit->hci_flags & BTF_UP) == 0)
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continue;
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memo = hci_memo_find(unit, dest);
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if (memo)
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goto found;
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}
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/*
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* Last ditch effort, lets use the first unit we find
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* thats up and running. (XXX settable default route?)
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*/
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SIMPLEQ_FOREACH(unit, &hci_unit_list, hci_next) {
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if ((unit->hci_flags & BTF_UP) == 0)
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continue;
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goto found;
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}
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return EHOSTUNREACH;
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found:
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bdaddr_copy(src, &unit->hci_bdaddr);
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return 0;
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}
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/*
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* find unit memo from bdaddr
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*/
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struct hci_memo *
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hci_memo_find(struct hci_unit *unit, bdaddr_t *bdaddr)
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{
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struct hci_memo *memo, *m0;
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struct timeval now;
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microtime(&now);
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m0 = LIST_FIRST(&unit->hci_memos);
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while ((memo = m0) != NULL) {
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m0 = LIST_NEXT(memo, next);
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if (now.tv_sec > memo->time.tv_sec + hci_memo_expiry) {
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DPRINTF("memo %p too old (expiring)\n", memo);
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hci_memo_free(memo);
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continue;
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}
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if (bdaddr_same(bdaddr, &memo->response.bdaddr)) {
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DPRINTF("memo %p found\n", memo);
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return memo;
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}
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}
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DPRINTF("no memo found\n");
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return NULL;
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}
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void
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hci_memo_free(struct hci_memo *memo)
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{
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LIST_REMOVE(memo, next);
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free(memo, M_BLUETOOTH);
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}
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