remote-sl.h revision 1.1 
1/*	$NetBSD: remote-sl.h,v 1.1 1996/05/05 12:17:11 oki Exp $ */
2
3/*
4 * Copyright (c) 1992, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This software was developed by the Computer Systems Engineering group
8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
9 * contributed to Berkeley.
10 *
11 * All advertising materials mentioning features or use of this software
12 * must display the following acknowledgement:
13 *	This product includes software developed by the University of
14 *	California, Lawrence Berkeley Laboratory.
15 *
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
18 * are met:
19 * 1. Redistributions of source code must retain the above copyright
20 *    notice, this list of conditions and the following disclaimer.
21 * 2. Redistributions in binary form must reproduce the above copyright
22 *    notice, this list of conditions and the following disclaimer in the
23 *    documentation and/or other materials provided with the distribution.
24 * 3. All advertising materials mentioning features or use of this software
25 *    must display the following acknowledgement:
26 *	This product includes software developed by the University of
27 *	California, Berkeley and its contributors.
28 * 4. Neither the name of the University nor the names of its contributors
29 *    may be used to endorse or promote products derived from this software
30 *    without specific prior written permission.
31 *
32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
35 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
42 * SUCH DAMAGE.
43 *
44 *	@(#)remote-sl.h	8.1 (Berkeley) 6/11/93
45 */
46
47/*
48 * These definitions are factored out into an include file so
49 * the kernel stub has access to them.
50 */
51#define FRAME_START		0xc1		/* Frame End */
52#define FRAME_END		0xc0		/* Frame End */
53#define FRAME_ESCAPE		0xdb		/* Frame Esc */
54#define TRANS_FRAME_START	0xde		/* transposed frame start */
55#define TRANS_FRAME_END		0xdc		/* transposed frame esc */
56#define TRANS_FRAME_ESCAPE	0xdd		/* transposed frame esc */
57
58/*
59 * Message limits. SL_MAXDATA is the maximum number of bytes that can
60 * be read or written. SL_BUFSIZE is the maximum amount of data that
61 * can be passed across the serial link. The actual MTU is two times
62 * the max message (since each byte might be escaped), plus the two
63 * framing bytes. We add two to the message length to account for the
64 * type byte and checksum.
65 */
66#define SL_MAXDATA 62			/* max data that can be read */
67#define SL_RPCSIZE (1 + SL_MAXDATA)	/* errno byte + data */
68#define SL_MTU ((2 * (SL_RPCSIZE + 2) + 2))
69