1/* $NetBSD: slip.h,v 1.8 2003/08/07 16:32:59 agc Exp $ */ 2 3/*- 4 * Copyright (c) 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)slip.h 8.1 (Berkeley) 2/12/94 32 */ 33 34#ifndef _NET_SLIP_H_ 35#define _NET_SLIP_H_ 36 37/* Ioctls operating on SLIP ttys. */ 38#define SLIOCGUNIT _IOR('t', 88, int) /* get slip unit number */ 39 40/* 41 * Definitions of the pseudo-link-level header attached to slip 42 * packets grabbed by the packet filter (bpf) traffic monitor. 43 */ 44#define SLIP_HDRLEN 16 /* BPF SLIP header length */ 45 46/* Offsets into BPF SLIP header. */ 47#define SLX_DIR 0 /* direction; see below */ 48#define SLX_CHDR 1 /* compressed header data */ 49#define CHDR_LEN 15 /* length of compressed header data */ 50 51#define SLIPDIR_IN 0 /* incoming */ 52#define SLIPDIR_OUT 1 /* outgoing */ 53 54#endif /* !_NET_SLIP_H_ */ 55