1139823Simp/*- 21541Srgrimes * Copyright (c) 1982, 1986, 1993 3166841Srwatson * The Regents of the University of California. 4166841Srwatson * All rights reserved. 51541Srgrimes * 61541Srgrimes * Redistribution and use in source and binary forms, with or without 71541Srgrimes * modification, are permitted provided that the following conditions 81541Srgrimes * are met: 91541Srgrimes * 1. Redistributions of source code must retain the above copyright 101541Srgrimes * notice, this list of conditions and the following disclaimer. 111541Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 121541Srgrimes * notice, this list of conditions and the following disclaimer in the 131541Srgrimes * documentation and/or other materials provided with the distribution. 141541Srgrimes * 4. Neither the name of the University nor the names of its contributors 151541Srgrimes * may be used to endorse or promote products derived from this software 161541Srgrimes * without specific prior written permission. 171541Srgrimes * 181541Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 191541Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 201541Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 211541Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 221541Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 231541Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 241541Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 251541Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 261541Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 271541Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 281541Srgrimes * SUCH DAMAGE. 291541Srgrimes * 301541Srgrimes * @(#)udp.h 8.1 (Berkeley) 6/10/93 3150477Speter * $FreeBSD: releng/11.0/sys/netinet/udp.h 246210 2013-02-01 15:32:20Z jhb $ 321541Srgrimes */ 331541Srgrimes 342169Spaul#ifndef _NETINET_UDP_H_ 35166841Srwatson#define _NETINET_UDP_H_ 362169Spaul 371541Srgrimes/* 38166841Srwatson * UDP protocol header. 391541Srgrimes * Per RFC 768, September, 1981. 401541Srgrimes */ 411541Srgrimesstruct udphdr { 421541Srgrimes u_short uh_sport; /* source port */ 431541Srgrimes u_short uh_dport; /* destination port */ 4419183Sfenner u_short uh_ulen; /* udp length */ 451541Srgrimes u_short uh_sum; /* udp checksum */ 461541Srgrimes}; 472169Spaul 48194062Svanhu/* 49194062Svanhu * User-settable options (used with setsockopt). 50194062Svanhu */ 51245823Sjhb#define UDP_ENCAP 1 52194062Svanhu 53246210Sjhb/* Start of reserved space for third-party user-settable options. */ 54246210Sjhb#define UDP_VENDOR SO_VENDOR 55194062Svanhu 56194062Svanhu/* 57194062Svanhu * UDP Encapsulation of IPsec Packets options. 58194062Svanhu */ 59194062Svanhu/* Encapsulation types. */ 60217126Sjhb#define UDP_ENCAP_ESPINUDP_NON_IKE 1 /* draft-ietf-ipsec-nat-t-ike-00/01 */ 61194062Svanhu#define UDP_ENCAP_ESPINUDP 2 /* draft-ietf-ipsec-udp-encaps-02+ */ 62194062Svanhu 63194062Svanhu/* Default ESP in UDP encapsulation port. */ 64194062Svanhu#define UDP_ENCAP_ESPINUDP_PORT 500 65194062Svanhu 66194062Svanhu/* Maximum UDP fragment size for ESP over UDP. */ 67194062Svanhu#define UDP_ENCAP_ESPINUDP_MAXFRAGLEN 552 68194062Svanhu 692169Spaul#endif 70