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