LCOM1920-T02G10

/*        $NetBSD: udp.h,v 1.16 2012/06/22 14:54:35 christos Exp $        */

/*

 * Copyright (c) 1982, 1986, 1993

 *        The Regents of the University of California.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. Neither the name of the University nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 *        @(#)udp.h        8.1 (Berkeley) 6/10/93

 */

#ifndef _NETINET_UDP_H_

#define _NETINET_UDP_H_

#include <sys/types.h>

/*

 * Udp protocol header.

 * Per RFC 768, September, 1981.

 */

struct udphdr {

        uint16_t uh_sport;                /* source port */

        uint16_t uh_dport;                /* destination port */

        uint16_t uh_ulen;                /* udp length */

        uint16_t uh_sum;                /* udp checksum */

} __packed;

/* socket options for UDP */

#define        UDP_ENCAP        100

/* Encapsulation types */

#define UDP_ENCAP_ESPINUDP_NON_IKE         1 /* draft-ietf-ipsec-nat-t-ike-00/01 */

#define UDP_ENCAP_ESPINUDP                2 /* draft-ietf-ipsec-udp-encaps-06 */

/* Default encapsulation port */

#define UDP_ENCAP_ESPINUDP_PORT                500

/* Maximum UDP fragment size for ESP over UDP */

#define UDP_ENCAP_ESPINUDP_MAXFRAGLEN        552

#endif /* !_NETINET_UDP_H_ */