1 /* $OpenBSD: slip.h,v 1.4 2003/06/02 23:28:12 millert Exp $ */
2 /* $NetBSD: slip.h,v 1.6 1994/06/29 06:36:53 cgd Exp $ */
3
4 /*-
5 * Copyright (c) 1994
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * @(#)slip.h 8.1 (Berkeley) 2/12/94
33 */
34
35 #ifndef _NET_SLIP_H_
36 #define _NET_SLIP_H_
37
38 /* Ioctls operating on SLIP ttys. */
39 #define SLIOCGUNIT _IOR('t', 88, int) /* get slip unit number */
40
41 /*
42 * Definitions of the pseudo-link-level header attached to slip
43 * packets grabbed by the packet filter (bpf) traffic monitor.
44 */
45 #define SLIP_HDRLEN 16 /* BPF SLIP header length */
46
47 /* Offsets into BPF SLIP header. */
48 #define SLX_DIR 0 /* direction; see below */
49 #define SLX_CHDR 1 /* compressed header data */
50 #define CHDR_LEN 15 /* length of compressed header data */
51
52 #define SLIPDIR_IN 0 /* incoming */
53 #define SLIPDIR_OUT 1 /* outgoing */
54 #endif /* _NET_SLIP_H_ */