The Tcpdump Group git mirrors - tcpdump/blob - linux-include/net/slip.h

   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/linux-include/net/Attic/slip.h,v 1.4 1999-10-07 23:47:14 mcr 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