* Copyright (c) 1984, 1985, 1986, 1987 Regents of the University of California.
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, 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'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
* @(#)sp.h 7.3 (Berkeley) 6/29/88
* Definitions for Xerox NS style sequenced packet protocol
u_char sp_cc
; /* connection control */
u_char sp_dt
; /* datastream type */
#define SP_SP 0x80 /* system packet */
#define SP_SA 0x40 /* send acknowledgement */
#define SP_OB 0x20 /* attention (out of band data) */
#define SP_EM 0x10 /* end of message */
u_short sp_sid
; /* source connection identifier */
u_short sp_did
; /* destination connection identifier */
u_short sp_seq
; /* sequence number */
u_short sp_ack
; /* acknowledge number */
u_short sp_alo
; /* allocation number */