fe267a5590
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
177 lines
5.5 KiB
C
177 lines
5.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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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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