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      1 /* $NetBSD: pdu.h,v 1.3 2013/07/11 05:45:23 kefren Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2010 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Mihai Chelaru <kefren (at) NetBSD.org>
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _PDU_H_
     33 #define _PDU_H_
     34 
     35 #include <sys/types.h>
     36 #include <netinet/in.h>
     37 
     38 #include "ldp_peer.h"
     39 
     40 #define	MIN_PDU_SIZE 10
     41 #define	MAX_PDU_SIZE 1300
     42 
     43 #define	PDU_VER_LENGTH (sizeof(uint16_t) + sizeof(uint16_t))
     44 #define	PDU_PAYLOAD_LENGTH (sizeof(struct in_addr) + sizeof(uint16_t))
     45 
     46 struct ldp_pdu {
     47 	uint16_t version;
     48 	uint16_t length;
     49 	/* draft-ietf-mpls-ldp-ipv6-07 keeps this IPv4 only for now */
     50 	struct in_addr  ldp_id;
     51 	uint16_t label_space;
     52 }               __packed;
     53 
     54 
     55 uint	get_pdu(const unsigned char *, struct ldp_pdu *);
     56 int	check_recv_pdu(const struct ldp_peer *, const struct ldp_pdu *, int);
     57 
     58 
     59 #endif	/* !_PDU_H_ */
     60