175 lines
5.4 KiB
C
175 lines
5.4 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_CF_LEN 2
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#define ISO88025_HDR_LEN (ISO88025_CF_LEN + (ISO88025_ADDR_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_4 4464
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#define ISO88025_MAX_LEN_16 17960
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#define ISO88025_MAX_LEN ISO88025_MAX_LEN_16
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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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/* Access Control field */
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#define AC_PRI_MASK 0xe0 /* Priority bits */
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#define AC_TOKEN 0x10 /* Token bit: 0=Token, 1=Frame */
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#define AC_MONITOR 0x08 /* Monitor */
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#define AC_RESV_MASK 0x07 /* Reservation bits */
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/* Frame Control field */
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#define FC_FT_MASK 0xc0 /* Frame Type */
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#define FC_FT_MAC 0x00 /* MAC frame */
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#define FC_FT_LLC 0x40 /* LLC frame */
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#define FC_ATTN_MASK 0x0f /* Attention bits */
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#define FC_ATTN_EB 0x01 /* Express buffer */
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#define FC_ATTN_BE 0x02 /* Beacon */
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#define FC_ATTN_CT 0x03 /* Claim token */
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#define FC_ATTN_RP 0x04 /* Ring purge */
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#define FC_ATTN_AMP 0x05 /* Active monitor present */
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#define FC_ATTN_SMP 0x06 /* Standby monitor present */
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/* Token Ring destination address */
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#define DA_IG 0x80 /* Individual/group address. */
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/* 0=Individual, 1=Group */
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#define DA_UL 0x40 /* Universal/local address. */
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/* 0=Universal, 1=Local */
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/* Token Ring source address */
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#define SA_RII 0x80 /* Routing information indicator */
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#define SA_IG 0x40 /* Individual/group address */
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/* 0=Group, 1=Individual */
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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_int8_t ac; /* access control field */
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u_int8_t fc; /* frame control field */
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u_int8_t iso88025_dhost[ISO88025_ADDR_LEN]; /* destination address */
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u_int8_t iso88025_shost[ISO88025_ADDR_LEN]; /* source address */
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u_int16_t rcf; /* route control field */
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u_int16_t rd[RIF_MAX_RD]; /* routing designators */
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} __packed;
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struct iso88025_rif {
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u_int16_t rcf; /* route control field */
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u_int16_t rd[RIF_MAX_RD]; /* routing designators */
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} __packed;
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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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struct iso88025_sockaddr_dl_data {
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u_short trld_rcf;
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u_short *trld_route[RIF_MAX_LEN];
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};
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#define ISO88025_MAX(a, b) (((a)>(b))?(a):(b))
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#define SDL_ISO88025(s) ((struct iso88025_sockaddr_dl_data *) \
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((s)->sdl_data + \
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ISO88025_MAX((s)->sdl_nlen + (s)->sdl_alen + \
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(s)->sdl_slen, 12)))
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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 ISO88025_BPF_UNSUPPORTED 0
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#define ISO88025_BPF_SUPPORTED 1
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#ifdef _KERNEL
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void iso88025_ifattach (struct ifnet *, const u_int8_t *, int);
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void iso88025_ifdetach (struct ifnet *, int);
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int iso88025_ioctl (struct ifnet *, u_long, caddr_t );
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int iso88025_output (struct ifnet *, struct mbuf *,
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const struct sockaddr *, struct route *);
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void iso88025_input (struct ifnet *, struct mbuf *);
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#endif /* _KERNEL */
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#endif /* !_NET_ISO88025_H_ */
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