173 lines
5.3 KiB
C
173 lines
5.3 KiB
C
/*-
|
|
* 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
|