Date: Wed, 22 Apr 1998 10:02:54 -0400 (EDT) From: "Larry S. Lile" <lile@stdio.com> To: "Matthew N. Dodd" <winter@jurai.net>, tokenring@FreeBSD.ORG Subject: Re: code updated Message-ID: <Pine.SUN.3.91.980422095212.22047A-200000@heathers2.stdio.com> In-Reply-To: <Pine.SUN.3.91.980422084236.21004A-100000@heathers2.stdio.com>
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[-- Attachment #1 --]
On Wed, 22 Apr 1998, Larry S. Lile wrote:
> Also I should be putting out a first effort at a /sys/net/is088025.h
> shortly which should contain most of the constants and such for 802.5.
As promised... but would everybody please glance it over and make
sure I haven't made any serious errors.
Larry
lile@stdio.com
PS: File attached inline in uu for those with strange mailers, sorry for
the excess space.
begin 666 iso88025.h
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end
[-- Attachment #2 --]
/*
* Copyright (c) 1998, Larry Lile
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: iso88025.h,v 1.1 1998/04/22 13:49:20 lile Exp $
*
* Information gathered from tokenring@freebsd, /sys/net/ethernet.h and
* the Mach token ring driver.
*/
/*
* Fundamental constants relating to iso 802.5
*/
#ifndef _NET_ISO88025_H_
#define _NET_ISO88025_H_
/*
* The number of bytes in an iso 802.5 (MAC) address.
*/
#define ISO88025_ADDR_LEN 6
/*
* The number of bytes in the type field.
* ( do we really need this or is ether_type just ether_type ? )
*/
#define ISO88025_TYPE_LEN 2
/*
* Number of bytes needed for source routing information.
*/
#define ISO88025_RCF_LEN 2
#define ISO88025_RIF_LEN 16
/*
* The length of the combined header.
*/
#define ISO88025_HDR_LEN (ISO88025_ADDR_LEN*2+ISO88025_TYPE_LEN+ \
ISO88025_RCF_LEN+ISO88025_RIF_LEN)
/*
* The minimum packet length.
*/
#define ISO88025_MIN_LEN 0 /* This offends my morality */
/*
* The maximum packet length.
*/
#define ISO88025_MAX_LEN 17960
/*
* A macro to validate a length with
*/
#define ISO88025_IS_VALID_LEN(foo) \
((foo) >= ISO88025_MIN_LEN && (foo) <= ISO88025_MAX_LEN)
/*
* ISO 802.5 physical header */
*/
struct iso88025_head {
u_char ac; /* access control field */
u_char fc; /* frame control field */
u_char iso88025_dhost[ISO88025_ADDR_LEN]; /* destination address */
u_char iso88025_shost[ISO88025_ADDR_LEN]; /* source address */
u_short rcf; /* route control field */
u_short rseg[8];/* routing registers */
};
/*
* ISO 802.5 LLC structure */
*/
struct tr_llc {
u_char dsap; /* destination SAP */
u_char ssap; /* source SAP */
u_char llc; /* LLC control field */
u_char protid[3]; /* protocol id */
u_short ether_type; /* XXX ether type field */
};
/*
* Structure of a 48-bit iso 802.5 address.
* ( We could also add the 16 bit addresses as a union)
*/
struct ether_addr {
u_char octet[ISO88025_ADDR_LEN];
};
#endif
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