/*
 * Copyright (c) 1984, 1985, 1986, 1987 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that this notice is preserved and that due credit is given
 * to the University of California at Berkeley. The name of the University
 * may not be used to endorse or promote products derived from this
 * software without specific prior written permission. This software
 * is provided ``as is'' without express or implied warranty.
 *
 *      @(#)spidp.h	7.2 (Berkeley) 1/20/88
 */

/*
 * Definitions for NS(tm) Internet Datagram Protocol
 * containing a Sequenced Packet Protocol packet.
 */
struct spidp {
	struct idp	si_i;
	struct sphdr 	si_s;
};
struct spidp_q {
	struct spidp_q	*si_next;
	struct spidp_q	*si_prev;
};
#define SI(x)	((struct spidp *)x)
#define si_sum	si_i.idp_sum
#define si_len	si_i.idp_len
#define si_tc	si_i.idp_tc
#define si_pt	si_i.idp_pt
#define si_dna	si_i.idp_dna
#define si_sna	si_i.idp_sna
#define si_sport	si_i.idp_sna.x_port
#define si_cc	si_s.sp_cc
#define si_dt	si_s.sp_dt
#define si_sid	si_s.sp_sid
#define si_did	si_s.sp_did
#define si_seq	si_s.sp_seq
#define si_ack	si_s.sp_ack
#define si_alo	si_s.sp_alo