1 /* $OpenBSD: if_token.h,v 1.6 2003/11/16 20:30:07 avsm Exp $ */ 2 /* $NetBSD: if_token.h,v 1.6 1999/11/19 20:41:19 thorpej Exp $ */ 3 4 /* 5 * Copyright (c) 1982, 1986, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * from: NetBSD: if_fddi.h,v 1.2 1995/08/19 04:35:28 cgd Exp 33 */ 34 35 #ifndef _NET_IF_TOKEN_H_ 36 #define _NET_IF_TOKEN_H_ 37 38 #define ISO88025_ADDR_LEN 6 39 40 /* Token Ring physical header */ 41 struct token_header { 42 u_int8_t token_ac; /* access control field */ 43 u_int8_t token_fc; /* frame control field */ 44 u_int8_t token_dhost[ISO88025_ADDR_LEN]; /* dest. address */ 45 u_int8_t token_shost[ISO88025_ADDR_LEN]; /* source address */ 46 } __packed; 47 48 #define TOKEN_MAX_BRIDGE 8 49 50 /* Token Ring routing information field */ 51 struct token_rif { 52 u_int16_t tr_rcf; /* route control field */ 53 u_int16_t tr_rdf[TOKEN_MAX_BRIDGE]; /* route-designator fields */ 54 } __packed; 55 56 /* standard values for address control and frame control field */ 57 #define TOKEN_AC 0x10 58 #define TOKEN_FC 0x40 59 60 #define TOKEN_RI_PRESENT 0x80 /* routing info present bit */ 61 #define TOKEN_RCF_LEN_MASK 0x1f00 62 #define TOKEN_RCF_BROADCAST_MASK 0xe000 63 #define TOKEN_RCF_BROADCAST_ALL 0x8000 /* all routes broadcast */ 64 #define TOKEN_RCF_BROADCAST_SINGLE 0xc000 /* single route broadcast */ 65 66 /* 67 * A Token-ring frame consists of 68 * header + rif + llcinfo + fcs 69 * 14 + 2 * (0 ... 9) + x + 4 octets 70 * where llcinfo contains the llcsnap header (8 octets) and the IP frame 71 */ 72 /* LLC INFO (802.5PD-2) */ 73 #define TOKEN_RCF_FRAME0 0x0000 /* 516 */ 74 #define TOKEN_RCF_FRAME1 0x0010 /* 1500 */ 75 #define TOKEN_RCF_FRAME2 0x0020 /* 2052 */ 76 #define TOKEN_RCF_FRAME3 0x0030 /* 4472 */ 77 #define TOKEN_RCF_FRAME4 0x0040 /* 8144 */ 78 #define TOKEN_RCF_FRAME5 0x0050 /* 11407 */ 79 #define TOKEN_RCF_FRAME6 0x0060 /* 17800 */ 80 #define TOKEN_RCF_FRAME7 0x0070 /* 65535 */ 81 #define TOKEN_RCF_FRAME_MASK 0x0070 82 83 #define TOKEN_RCF_DIRECTION 0x0080 84 85 /* 86 * According to RFC 1042 87 */ 88 #define IPMTU_4MBIT_MAX 4464 89 #define IPMTU_16MBIT_MAX 8188 90 91 /* 92 * RFC 1042: 93 * It is recommended that all implementations support IP packets 94 * of at least 2002 octets. 95 */ 96 #define ISO88025_MTU 2002 97 98 /* 99 * This assumes that route information fields are appended to 100 * existing structures like llinfo_arp and token_header 101 */ 102 #define TOKEN_RIF(x) ((struct token_rif *) ((x) + 1)) 103 104 /* 105 * This is a kludge to get at the token ring mac header and the source route 106 * information after m_adj() has been used on the mbuf. 107 * Note that m is always an mbuf with a packet header. 108 */ 109 #define M_TRHSTART(m) \ 110 (ALIGN(((m)->m_flags & M_EXT ? (m)->m_ext.ext_buf : &(m)->m_pktdat[0]) \ 111 + sizeof (struct token_header)) - sizeof(struct token_header)) 112 113 #if defined(_KERNEL) 114 /* 115 * XXX we need if_ethersubr.c with all these defines 116 */ 117 #define tokenbroadcastaddr etherbroadcastaddr 118 #define token_ipmulticast_min ether_ipmulticast_min 119 #define token_ipmulticast_max ether_ipmulticast_max 120 #define token_addmulti ether_addmulti 121 #define token_delmulti ether_delmulti 122 #define token_sprintf ether_sprintf 123 124 void token_ifattach(struct ifnet *); 125 void token_input(struct ifnet *, struct mbuf *); 126 #endif 127 128 #endif /* _NET_IF_TOKEN_H_ */ 129