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1 /*
2  * Definitions that user level programs might need to know to interact
3  * with serial line IP (slip) lines.
4  *
5  * @(#) $Header: /tcpdump/master/tcpdump/slip.h,v 1.1 2000/10/09 01:53:21 guy Exp $
6  *
7  * Copyright (c) 1990 Regents of the University of California.
8  * All rights reserved.
9  *
10  * Redistribution and use in source and binary forms are permitted
11  * provided that the above copyright notice and this paragraph are
12  * duplicated in all such forms and that any documentation,
13  * advertising materials, and other materials related to such
14  * distribution and use acknowledge that the software was developed
15  * by the University of California, Berkeley.  The name of the
16  * University may not be used to endorse or promote products derived
17  * from this software without specific prior written permission.
18  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
19  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
20  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
21  */
22 
23 /*
24  * definitions of the pseudo- link-level header attached to slip
25  * packets grabbed by the packet filter (bpf) traffic monitor.
26  */
27 #define SLIP_HDRLEN 16
28 
29 #define SLX_DIR 0
30 #define SLX_CHDR 1
31 #define CHDR_LEN 15
32 
33 #define SLIPDIR_IN 0
34 #define SLIPDIR_OUT 1
35