209614c5d4
from iso88025.h. o Add minimal llc support to iso88025_input. o Clean up most of the source routing code. * Submitted by: Nikolai Saoukh <nms@otdel-1.org>
123 lines
3.7 KiB
C
123 lines
3.7 KiB
C
/*
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* Copyright (c) 1998, Larry Lile
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* All rights reserved.
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*
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* For latest sources and information on this driver, please
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* go to http://anarchy.stdio.com.
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*
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* Questions, comments or suggestions should be directed to
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* Larry Lile <lile@stdio.com>.
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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 unmodified, this list of conditions, and the following
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* $FreeBSD$
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*
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* Information gathered from tokenring@freebsd, /sys/net/ethernet.h and
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* the Mach token ring driver.
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*/
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/*
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* Fundamental constants relating to iso 802.5
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*/
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#ifndef _NET_ISO88025_H_
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#define _NET_ISO88025_H_
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/*
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* General ISO 802.5 definitions
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*/
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#define ISO88025_ADDR_LEN 6
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#define ISO88025_HDR_LEN (ISO88025_CF_LEN + (ISO88025_ADDR_LEN * 2))
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#define ISO88025_CF_LEN 2
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#define RCF_LEN 2
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#define RIF_MAX_RD 14
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#define RIF_MAX_LEN 16
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#define TR_AC 0x10
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#define TR_LLC_FRAME 0x40
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#define TR_4MBPS 4000000
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#define TR_16MBPS 16000000
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#define TR_100MBPS 100000000
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/*
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* Source routing
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*/
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#define TR_RII 0x80
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#define TR_RCF_BCST_MASK 0xe000
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#define TR_RCF_LEN_MASK 0x1f00
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#define TR_RCF_DIR 0x0080
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#define TR_RCF_LF_MASK 0x0070
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#define TR_RCF_RIFLEN(x) ((ntohs(x) & TR_RCF_LEN_MASK) >> 8)
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/*
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* Minimum and maximum packet payload lengths.
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*/
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#define ISO88025_MIN_LEN 0
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#define ISO88025_MAX_LEN 17960
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/*
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* A macro to validate a length with
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*/
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#define ISO88025_IS_VALID_LEN(foo) \
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((foo) >= ISO88025_MIN_LEN && (foo) <= ISO88025_MAX_LEN)
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/*
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* ISO 802.5 physical header
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*/
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struct iso88025_header {
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u_char ac; /* access control field */
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u_char fc; /* frame control field */
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u_char iso88025_dhost[ISO88025_ADDR_LEN]; /* destination address */
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u_char iso88025_shost[ISO88025_ADDR_LEN]; /* source address */
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u_short rcf; /* route control field */
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u_short rd[RIF_MAX_RD]; /* routing designators */
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};
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struct iso88025_sockaddr_data {
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u_char ether_dhost[ISO88025_ADDR_LEN];
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u_char ether_shost[ISO88025_ADDR_LEN];
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u_char ac;
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u_char fc;
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};
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/*
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* Structure of a 48-bit iso 802.5 address.
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* ( We could also add the 16 bit addresses as a union)
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*/
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struct iso88025_addr {
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u_char octet[ISO88025_ADDR_LEN];
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};
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#define ISO88025_MAX_MTU 18000
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#define ISO88025_DEFAULT_MTU 1500
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#define senderr(e) { error = (e); goto bad;}
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void iso88025_ifattach __P((struct ifnet *));
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int iso88025_ioctl __P((struct ifnet *, int , caddr_t ));
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int iso88025_output __P((struct ifnet *, struct mbuf *, struct sockaddr *, struct rtentry *));
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void iso88025_input __P((struct ifnet *, struct iso88025_header *, struct mbuf *));
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#endif
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