8d4db62642
Bluetooth Network Access Point (NAP), Group Ad-hoc Network (GN) and Personal Area Network User (PANU) profiles. Obtained from: NetBSD MFC after: 1 month
111 lines
2.5 KiB
C
111 lines
2.5 KiB
C
/* $NetBSD: packet.c,v 1.1 2008/08/17 13:20:57 plunky Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2008 Iain Hibbert
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/* $FreeBSD$ */
|
|
|
|
#include <sys/cdefs.h>
|
|
__RCSID("$NetBSD: packet.c,v 1.1 2008/08/17 13:20:57 plunky Exp $");
|
|
|
|
#include "btpand.h"
|
|
|
|
packet_t *
|
|
packet_alloc(channel_t *chan)
|
|
{
|
|
packet_t *pkt;
|
|
|
|
pkt = malloc(sizeof(packet_t) + chan->mru);
|
|
if (pkt == NULL) {
|
|
log_err("%s() failed: %m", __func__);
|
|
return NULL;
|
|
}
|
|
|
|
memset(pkt, 0, sizeof(packet_t));
|
|
STAILQ_INIT(&pkt->extlist);
|
|
pkt->ptr = pkt->buf;
|
|
|
|
pkt->chan = chan;
|
|
chan->refcnt++;
|
|
|
|
return pkt;
|
|
}
|
|
|
|
void
|
|
packet_free(packet_t *pkt)
|
|
{
|
|
exthdr_t *eh;
|
|
|
|
if (pkt->refcnt-- > 0)
|
|
return;
|
|
|
|
while ((eh = STAILQ_FIRST(&pkt->extlist)) != NULL) {
|
|
STAILQ_REMOVE_HEAD(&pkt->extlist, next);
|
|
free(eh);
|
|
}
|
|
|
|
pkt->chan->refcnt--;
|
|
if (pkt->chan->refcnt == 0)
|
|
channel_free(pkt->chan);
|
|
|
|
free(pkt);
|
|
}
|
|
|
|
void
|
|
packet_adj(packet_t *pkt, size_t size)
|
|
{
|
|
|
|
assert(pkt->refcnt == 0);
|
|
assert(pkt->len >= size);
|
|
|
|
pkt->ptr += size;
|
|
pkt->len -= size;
|
|
}
|
|
|
|
pkthdr_t *
|
|
pkthdr_alloc(packet_t *pkt)
|
|
{
|
|
pkthdr_t *ph;
|
|
|
|
ph = malloc(sizeof(pkthdr_t));
|
|
if (ph == NULL) {
|
|
log_err("%s() failed: %m", __func__);
|
|
return NULL;
|
|
}
|
|
|
|
ph->data = pkt;
|
|
pkt->refcnt++;
|
|
|
|
return ph;
|
|
}
|
|
|
|
void
|
|
pkthdr_free(pkthdr_t *ph)
|
|
{
|
|
|
|
packet_free(ph->data);
|
|
free(ph);
|
|
}
|