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/*-
* Copyright (c) 1998, Larry Lile
* All rights reserved.
*
* For latest sources and information on this driver, please
* go to http://anarchy.stdio.com.
*
* Questions, comments or suggestions should be directed to
* Larry Lile <lile@stdio.com>.
*
* 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.
*
* $FreeBSD$
*
* 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_
/*
* General ISO 802.5 definitions
*/
#define ISO88025_ADDR_LEN 6
#define ISO88025_CF_LEN 2
#define ISO88025_HDR_LEN (ISO88025_CF_LEN + (ISO88025_ADDR_LEN * 2))
#define RCF_LEN 2
#define RIF_MAX_RD 14
#define RIF_MAX_LEN 16
#define TR_AC 0x10
#define TR_LLC_FRAME 0x40
#define TR_4MBPS 4000000
#define TR_16MBPS 16000000
#define TR_100MBPS 100000000
/*
* Source routing
*/
#define TR_RII 0x80
#define TR_RCF_BCST_MASK 0xe000
#define TR_RCF_LEN_MASK 0x1f00
#define TR_RCF_DIR 0x0080
#define TR_RCF_LF_MASK 0x0070
#define TR_RCF_RIFLEN(x) ((ntohs(x) & TR_RCF_LEN_MASK) >> 8)
/*
* Minimum and maximum packet payload lengths.
*/
#define ISO88025_MIN_LEN 0
#define ISO88025_MAX_LEN_4 4464
#define ISO88025_MAX_LEN_16 17960
#define ISO88025_MAX_LEN ISO88025_MAX_LEN_16
/*
* A macro to validate a length with
*/
#define ISO88025_IS_VALID_LEN(foo) \
((foo) >= ISO88025_MIN_LEN && (foo) <= ISO88025_MAX_LEN)
/* Access Control field */
#define AC_PRI_MASK 0xe0 /* Priority bits */
#define AC_TOKEN 0x10 /* Token bit: 0=Token, 1=Frame */
#define AC_MONITOR 0x08 /* Monitor */
#define AC_RESV_MASK 0x07 /* Reservation bits */
/* Frame Control field */
#define FC_FT_MASK 0xc0 /* Frame Type */
#define FC_FT_MAC 0x00 /* MAC frame */
#define FC_FT_LLC 0x40 /* LLC frame */
#define FC_ATTN_MASK 0x0f /* Attention bits */
#define FC_ATTN_EB 0x01 /* Express buffer */
#define FC_ATTN_BE 0x02 /* Beacon */
#define FC_ATTN_CT 0x03 /* Claim token */
#define FC_ATTN_RP 0x04 /* Ring purge */
#define FC_ATTN_AMP 0x05 /* Active monitor present */
#define FC_ATTN_SMP 0x06 /* Standby monitor present */
/* Token Ring destination address */
#define DA_IG 0x80 /* Individual/group address. */
/* 0=Individual, 1=Group */
#define DA_UL 0x40 /* Universal/local address. */
/* 0=Universal, 1=Local */
/* Token Ring source address */
#define SA_RII 0x80 /* Routing information indicator */
#define SA_IG 0x40 /* Individual/group address */
/* 0=Group, 1=Individual */
/*
* ISO 802.5 physical header
*/
struct iso88025_header {
u_int8_t ac; /* access control field */
u_int8_t fc; /* frame control field */
u_int8_t iso88025_dhost[ISO88025_ADDR_LEN]; /* destination address */
u_int8_t iso88025_shost[ISO88025_ADDR_LEN]; /* source address */
u_int16_t rcf; /* route control field */
u_int16_t rd[RIF_MAX_RD]; /* routing designators */
} __packed;
struct iso88025_rif {
u_int16_t rcf; /* route control field */
u_int16_t rd[RIF_MAX_RD]; /* routing designators */
} __packed;
struct iso88025_sockaddr_data {
u_char ether_dhost[ISO88025_ADDR_LEN];
u_char ether_shost[ISO88025_ADDR_LEN];
u_char ac;
u_char fc;
};
struct iso88025_sockaddr_dl_data {
u_short trld_rcf;
u_short *trld_route[RIF_MAX_LEN];
};
#define ISO88025_MAX(a, b) (((a)>(b))?(a):(b))
#define SDL_ISO88025(s) ((struct iso88025_sockaddr_dl_data *) \
((s)->sdl_data + \
ISO88025_MAX((s)->sdl_nlen + (s)->sdl_alen + \
(s)->sdl_slen, 12)))
/*
* Structure of a 48-bit iso 802.5 address.
* ( We could also add the 16 bit addresses as a union)
*/
struct iso88025_addr {
u_char octet[ISO88025_ADDR_LEN];
};
#define ISO88025_MAX_MTU 18000
#define ISO88025_DEFAULT_MTU 1500
#define ISO88025_BPF_UNSUPPORTED 0
#define ISO88025_BPF_SUPPORTED 1
void iso88025_ifattach (struct ifnet *, const u_int8_t *, int);
void iso88025_ifdetach (struct ifnet *, int);
int iso88025_ioctl (struct ifnet *, int , caddr_t );
int iso88025_output (struct ifnet *, struct mbuf *, struct sockaddr *,
struct route *);
void iso88025_input (struct ifnet *, struct mbuf *);
#endif
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