65 lines
3.0 KiB
C
65 lines
3.0 KiB
C
/* $NetBSD: remote-sl.h,v 1.3 2005/12/11 12:19:44 christos Exp $ */
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratory.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)remote-sl.h 8.1 (Berkeley) 6/11/93
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*/
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/*
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* These definitions are factored out into an include file so
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* the kernel stub has access to them.
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*/
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#define FRAME_START 0xc1 /* Frame End */
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#define FRAME_END 0xc0 /* Frame End */
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#define FRAME_ESCAPE 0xdb /* Frame Esc */
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#define TRANS_FRAME_START 0xde /* transposed frame start */
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#define TRANS_FRAME_END 0xdc /* transposed frame esc */
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#define TRANS_FRAME_ESCAPE 0xdd /* transposed frame esc */
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/*
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* Message limits. SL_MAXDATA is the maximum number of bytes that can
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* be read or written. SL_BUFSIZE is the maximum amount of data that
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* can be passed across the serial link. The actual MTU is two times
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* the max message (since each byte might be escaped), plus the two
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* framing bytes. We add two to the message length to account for the
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* type byte and checksum.
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*/
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#define SL_MAXDATA 62 /* max data that can be read */
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#define SL_RPCSIZE (1 + SL_MAXDATA) /* errno byte + data */
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#define SL_MTU ((2 * (SL_RPCSIZE + 2) + 2))
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