61 lines
2.1 KiB
C
61 lines
2.1 KiB
C
/* $NetBSD: ieee8023_tlv.c,v 1.3 2007/02/21 23:00:06 thorpej Exp $ */
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/*-
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* Copyright (c)2005 YAMAMOTO Takashi,
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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 AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ieee8023_tlv.c,v 1.3 2007/02/21 23:00:06 thorpej Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <net/agr/ieee8023_tlv.h>
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int
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tlv_check(const void *p, size_t size, const struct tlvhdr *tlv,
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const struct tlv_template *tmpl, bool check_type)
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{
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while (/* CONSTCOND */ 1) {
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if ((const char *)tlv - (const char *)p + sizeof(*tlv) > size) {
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return EINVAL;
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}
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if ((check_type && tlv->tlv_type != tmpl->tmpl_type) ||
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tlv->tlv_length != tmpl->tmpl_length) {
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return EINVAL;
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}
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if (tmpl->tmpl_type == 0) {
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break;
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}
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tlv = (const struct tlvhdr *)
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((const char *)tlv + tlv->tlv_length);
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tmpl++;
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}
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return 0;
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}
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