1 /* 2 * Copyright (c) 1984, 1985, 1986, 1987 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 * 17 * @(#)idp.h 7.3 (Berkeley) 06/29/88 18 */ 19 20 /* 21 * Definitions for NS(tm) Internet Datagram Protocol 22 */ 23 struct idp { 24 u_short idp_sum; /* Checksum */ 25 u_short idp_len; /* Length, in bytes, including header */ 26 u_char idp_tc; /* Transport Crontrol (i.e. hop count) */ 27 u_char idp_pt; /* Packet Type (i.e. level 2 protocol) */ 28 struct ns_addr idp_dna; /* Destination Network Address */ 29 struct ns_addr idp_sna; /* Source Network Address */ 30 }; 31