1 /* $NetBSD: udp.h,v 1.16 2012/06/22 14:54:35 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1993 5 * The Regents of the University of California. 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 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)udp.h 8.1 (Berkeley) 6/10/93 32 */ 33 34 #ifndef _NETINET_UDP_H_ 35 #define _NETINET_UDP_H_ 36 37 #include <sys/types.h> 38 /* 39 * Udp protocol header. 40 * Per RFC 768, September, 1981. 41 */ 42 struct udphdr { 43 uint16_t uh_sport; /* source port */ 44 uint16_t uh_dport; /* destination port */ 45 uint16_t uh_ulen; /* udp length */ 46 uint16_t uh_sum; /* udp checksum */ 47 } __packed; 48 49 /* socket options for UDP */ 50 #define UDP_ENCAP 100 51 52 /* Encapsulation types */ 53 #define UDP_ENCAP_ESPINUDP_NON_IKE 1 /* draft-ietf-ipsec-nat-t-ike-00/01 */ 54 #define UDP_ENCAP_ESPINUDP 2 /* draft-ietf-ipsec-udp-encaps-06 */ 55 56 /* Default encapsulation port */ 57 #define UDP_ENCAP_ESPINUDP_PORT 500 58 59 /* Maximum UDP fragment size for ESP over UDP */ 60 #define UDP_ENCAP_ESPINUDP_MAXFRAGLEN 552 61 62 #endif /* !_NETINET_UDP_H_ */ 63