112 lines
2.5 KiB
C
112 lines
2.5 KiB
C
/* $NetBSD: packet.c,v 1.1 2008/08/17 13:20:57 plunky Exp $ */
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/*-
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* Copyright (c) 2008 Iain Hibbert
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* $FreeBSD$ */
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: packet.c,v 1.1 2008/08/17 13:20:57 plunky Exp $");
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#define L2CAP_SOCKET_CHECKED
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#include "btpand.h"
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packet_t *
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packet_alloc(channel_t *chan)
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{
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packet_t *pkt;
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pkt = malloc(sizeof(packet_t) + chan->mru);
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if (pkt == NULL) {
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log_err("%s() failed: %m", __func__);
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return NULL;
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}
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memset(pkt, 0, sizeof(packet_t));
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STAILQ_INIT(&pkt->extlist);
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pkt->ptr = pkt->buf;
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pkt->chan = chan;
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chan->refcnt++;
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return pkt;
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}
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void
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packet_free(packet_t *pkt)
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{
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exthdr_t *eh;
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if (pkt->refcnt-- > 0)
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return;
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while ((eh = STAILQ_FIRST(&pkt->extlist)) != NULL) {
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STAILQ_REMOVE_HEAD(&pkt->extlist, next);
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free(eh);
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}
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pkt->chan->refcnt--;
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if (pkt->chan->refcnt == 0)
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channel_free(pkt->chan);
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free(pkt);
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}
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void
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packet_adj(packet_t *pkt, size_t size)
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{
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assert(pkt->refcnt == 0);
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assert(pkt->len >= size);
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pkt->ptr += size;
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pkt->len -= size;
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}
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pkthdr_t *
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pkthdr_alloc(packet_t *pkt)
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{
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pkthdr_t *ph;
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ph = malloc(sizeof(pkthdr_t));
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if (ph == NULL) {
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log_err("%s() failed: %m", __func__);
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return NULL;
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}
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ph->data = pkt;
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pkt->refcnt++;
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return ph;
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}
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void
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pkthdr_free(pkthdr_t *ph)
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{
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packet_free(ph->data);
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free(ph);
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}
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