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slip.h revision 1.1 
      1 /*
      2  * Definitions that user level programs might need to know to interact
      3  * with serial line IP (slip) lines.
      4 
      5  * @(#) $Header: /tank/opengrok/rsync2/NetBSD/src/sys/net/slip.h,v 1.1 1993/03/25 00:30:55 cgd Exp $ (LBL)
      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  * ioctl to get slip interface unit number (e.g., sl0, sl1, etc.)
     25  * assigned to some terminal line with a slip module pushed on it.
     26  */
     27 #ifdef __STDC__
     28 #define SLIOGUNIT _IOR('B', 1, int)
     29 #else
     30 #define SLIOGUNIT _IOR(B, 1, int)
     31 #endif
     32 
     33 /*
     34  * definitions of the pseudo- link-level header attached to slip
     35  * packets grabbed by the packet filter (bpf) traffic monitor.
     36  */
     37 #define SLIP_HDRLEN 16
     38 
     39 #define SLX_DIR 0
     40 #define SLX_CHDR 1
     41 #define CHDR_LEN 15
     42 
     43 #define SLIPDIR_IN 0
     44 #define SLIPDIR_OUT 1
     45 
     46