123201Smckusick /* 2*63231Sbostic * Copyright (c) 1984, 1985, 1986, 1987, 1993 3*63231Sbostic * The Regents of the University of California. All rights reserved. 423201Smckusick * 544497Sbostic * %sccs.include.redist.c% 633371Ssklower * 7*63231Sbostic * @(#)idp.h 8.1 (Berkeley) 06/10/93 823201Smckusick */ 921478Ssklower 1021478Ssklower /* 1121478Ssklower * Definitions for NS(tm) Internet Datagram Protocol 1221478Ssklower */ 1321478Ssklower struct idp { 1421478Ssklower u_short idp_sum; /* Checksum */ 1521478Ssklower u_short idp_len; /* Length, in bytes, including header */ 1621478Ssklower u_char idp_tc; /* Transport Crontrol (i.e. hop count) */ 1721478Ssklower u_char idp_pt; /* Packet Type (i.e. level 2 protocol) */ 1821478Ssklower struct ns_addr idp_dna; /* Destination Network Address */ 1921478Ssklower struct ns_addr idp_sna; /* Source Network Address */ 2021478Ssklower }; 21