includes/netinet/udp.h

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00001 /*      $NetBSD: udp.h,v 1.6 1995/04/13 06:37:10 cgd Exp $      */
00002 
00003 /*
00004  * Copyright (c) 1982, 1986, 1993
00005  *      The Regents of the University of California.  All rights reserved.
00006  *
00007  * Redistribution and use in source and binary forms, with or without
00008  * modification, are permitted provided that the following conditions
00009  * are met:
00010  * 1. Redistributions of source code must retain the above copyright
00011  *    notice, this list of conditions and the following disclaimer.
00012  * 2. Redistributions in binary form must reproduce the above copyright
00013  *    notice, this list of conditions and the following disclaimer in the
00014  *    documentation and/or other materials provided with the distribution.
00015  * 3. Neither the name of the University nor the names of its contributors
00016  *    may be used to endorse or promote products derived from this software
00017  *    without specific prior written permission.
00018  *
00019  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
00020  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00021  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00022  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
00023  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00024  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00025  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00026  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00027  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00028  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00029  * SUCH DAMAGE.
00030  *
00031  *      @(#)udp.h       8.1 (Berkeley) 6/10/93
00032  */
00033 
00034 /*
00035  * Portions Copyright (c) 2004,2009 by Internet Systems Consortium, Inc. ("ISC")
00036  * Portions Copyright (c) 2000-2003 by Internet Software Consortium
00037  *
00038  * Permission to use, copy, modify, and distribute this software for any
00039  * purpose with or without fee is hereby granted, provided that the above
00040  * copyright notice and this permission notice appear in all copies.
00041  *
00042  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
00043  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
00044  * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
00045  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
00046  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
00047  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
00048  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
00049  *
00050  *   Internet Systems Consortium, Inc.
00051  *   950 Charter Street
00052  *   Redwood City, CA 94063
00053  *   <info@isc.org>
00054  *   https://www.isc.org/
00055  */
00056 
00057 /*
00058  * Udp protocol header.
00059  * Per RFC 768, September, 1981.
00060  */
00061 struct udphdr {
00062         u_int16_t uh_sport;             /* source port */
00063         u_int16_t uh_dport;             /* destination port */
00064         u_int16_t uh_ulen;              /* udp length */
00065         u_int16_t uh_sum;               /* udp checksum */
00066 };

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