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 | |
36 | struct 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 | |
52 | struct tlv_template { |
53 | uint8_t tmpl_type; |
54 | uint8_t tmpl_length; |
55 | }; |
56 | |
57 | int tlv_check(const void *, size_t, const struct tlvhdr *, |
58 | const struct tlv_template *, bool); |
59 | |
60 | #endif /* !_NET_AGR_IEEE8023_TLV_H_ */ |
61 | |