1/* $NetBSD: ieee8023_tlv.h,v 1.3 2007/02/21 23:00:06 thorpej Exp $ */
2
3/*-
4 * Copyright (c)2005 YAMAMOTO Takashi,
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#ifndef _NET_AGR_IEEE8023_TLV_H_
30#define _NET_AGR_IEEE8023_TLV_H_
31
32/*
33 * TLV on-wire structure.
34 */
35
36struct tlvhdr {
37 uint8_t tlv_type;
38 uint8_t tlv_length;
39 /* uint8_t tlv_value[]; */
40} __packed;
41
42/*
43 * ... and our implementation.
44 */
45
46#define TLV_SET(tlv, type, length) \
47 do { \
48 (tlv)->tlv_type = (type); \
49 (tlv)->tlv_length = sizeof(*tlv) + (length); \
50 } while (/*CONSTCOND*/0)
51
52struct tlv_template {
53 uint8_t tmpl_type;
54 uint8_t tmpl_length;
55};
56
57int tlv_check(const void *, size_t, const struct tlvhdr *,
58 const struct tlv_template *, bool);
59
60#endif /* !_NET_AGR_IEEE8023_TLV_H_ */
61