1 /* 2 * Definitions that user level programs might need to know to interact 3 * with serial line IP (slip) lines. 4 * 5 * $Id: slip.h,v 1.3 1993/05/20 03:06:14 cgd 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 #ifndef _NET_SLIP_H_ 24 #define _NET_SLIP_H_ 25 26 /* 27 * ioctl to get slip interface unit number (e.g., sl0, sl1, etc.) 28 * assigned to some terminal line with a slip module pushed on it. 29 */ 30 #ifdef __STDC__ 31 #define SLIOGUNIT _IOR('B', 1, int) 32 #else 33 #define SLIOGUNIT _IOR(B, 1, int) 34 #endif 35 36 /* 37 * definitions of the pseudo- link-level header attached to slip 38 * packets grabbed by the packet filter (bpf) traffic monitor. 39 */ 40 #define SLIP_HDRLEN 16 41 42 #define SLX_DIR 0 43 #define SLX_CHDR 1 44 #define CHDR_LEN 15 45 46 #define SLIPDIR_IN 0 47 #define SLIPDIR_OUT 1 48 49 #endif /* !_NET_SLIP_H_ */ 50