| 1 | /* $NetBSD: if_token.h,v 1.17 2015/12/16 05:44:59 ozaki-r Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1982, 1986, 1993 |
| 5 | * The Regents of the University of California. All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * 3. Neither the name of the University nor the names of its contributors |
| 16 | * may be used to endorse or promote products derived from this software |
| 17 | * without specific prior written permission. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 29 | * SUCH DAMAGE. |
| 30 | * |
| 31 | * from: NetBSD: if_fddi.h,v 1.2 1995/08/19 04:35:28 cgd Exp |
| 32 | */ |
| 33 | |
| 34 | #ifndef _NET_IF_TOKEN_H_ |
| 35 | #define _NET_IF_TOKEN_H_ |
| 36 | |
| 37 | #define ISO88025_ADDR_LEN 6 |
| 38 | |
| 39 | /* Token Ring physical header */ |
| 40 | struct { |
| 41 | uint8_t ; /* access control field */ |
| 42 | uint8_t ; /* frame control field */ |
| 43 | uint8_t [ISO88025_ADDR_LEN]; /* dest. address */ |
| 44 | uint8_t [ISO88025_ADDR_LEN]; /* source address */ |
| 45 | } __packed; |
| 46 | |
| 47 | #define TOKEN_MAX_BRIDGE 8 |
| 48 | |
| 49 | /* Token Ring routing information field */ |
| 50 | struct token_rif { |
| 51 | uint16_t tr_rcf; /* route control field */ |
| 52 | uint16_t tr_rdf[TOKEN_MAX_BRIDGE]; /* route-designator fields */ |
| 53 | } __packed; |
| 54 | |
| 55 | /* standard values for address control and frame control field */ |
| 56 | #define TOKEN_AC 0x10 |
| 57 | #define TOKEN_FC 0x40 |
| 58 | |
| 59 | #define TOKEN_RI_PRESENT 0x80 /* routing info present bit */ |
| 60 | #define TOKEN_RCF_LEN_MASK 0x1f00 |
| 61 | #define TOKEN_RCF_BROADCAST_MASK 0xe000 |
| 62 | #define TOKEN_RCF_BROADCAST_ALL 0x8000 /* all routes broadcast */ |
| 63 | #define TOKEN_RCF_BROADCAST_SINGLE 0xc000 /* single route broadcast */ |
| 64 | |
| 65 | /* |
| 66 | * A Token-ring frame consists of |
| 67 | * header + rif + llcinfo + fcs |
| 68 | * 14 + 2 * (0 ... 9) + x + 4 octets |
| 69 | * where llcinfo contains the llcsnap header (8 octets) and the IP frame |
| 70 | */ |
| 71 | /* LLC INFO (802.5PD-2) */ |
| 72 | #define TOKEN_RCF_FRAME0 0x0000 /* 516 */ |
| 73 | #define TOKEN_RCF_FRAME1 0x0010 /* 1500 */ |
| 74 | #define TOKEN_RCF_FRAME2 0x0020 /* 2052 */ |
| 75 | #define TOKEN_RCF_FRAME3 0x0030 /* 4472 */ |
| 76 | #define TOKEN_RCF_FRAME4 0x0040 /* 8144 */ |
| 77 | #define TOKEN_RCF_FRAME5 0x0050 /* 11407 */ |
| 78 | #define TOKEN_RCF_FRAME6 0x0060 /* 17800 */ |
| 79 | #define TOKEN_RCF_FRAME7 0x0070 /* 65535 */ |
| 80 | #define TOKEN_RCF_FRAME_MASK 0x0070 |
| 81 | |
| 82 | #define TOKEN_RCF_DIRECTION 0x0080 |
| 83 | |
| 84 | /* |
| 85 | * According to RFC 1042 |
| 86 | */ |
| 87 | #define IPMTU_4MBIT_MAX 4464 |
| 88 | #define IPMTU_16MBIT_MAX 8188 |
| 89 | |
| 90 | /* |
| 91 | * RFC 1042: |
| 92 | * It is recommended that all implementations support IP packets |
| 93 | * of at least 2002 octets. |
| 94 | */ |
| 95 | #define ISO88025_MTU 2002 |
| 96 | |
| 97 | /* |
| 98 | * This assumes that route information fields are appended to token_header. |
| 99 | */ |
| 100 | #define TOKEN_RIF(x) ((struct token_rif *) ((x) + 1)) |
| 101 | |
| 102 | #define TOKEN_RIF_LLE(lle) ((struct token_rif *) (lle)->la_opaque) |
| 103 | #define TOKEN_RIF_LLE_ASSERT(lle) KASSERT((lle)->la_opaque != NULL) |
| 104 | |
| 105 | /* |
| 106 | * This is a kludge to get at the token ring mac header and the source route |
| 107 | * information after m_adj() has been used on the mbuf. |
| 108 | * Note that m is always an mbuf with a packet header. |
| 109 | */ |
| 110 | #define M_TRHSTART(m) \ |
| 111 | (ALIGN(((m)->m_flags & M_EXT ? (m)->m_ext.ext_buf : &(m)->m_pktdat[0]) \ |
| 112 | + sizeof (struct token_header)) - sizeof(struct token_header)) |
| 113 | |
| 114 | #if defined(_KERNEL) |
| 115 | /* |
| 116 | * XXX we need if_ethersubr.c with all these defines |
| 117 | */ |
| 118 | #define tokenbroadcastaddr etherbroadcastaddr |
| 119 | #define token_ipmulticast_min ether_ipmulticast_min |
| 120 | #define token_ipmulticast_max ether_ipmulticast_max |
| 121 | #define token_sprintf ether_sprintf |
| 122 | |
| 123 | void token_ifattach(struct ifnet *, void *); |
| 124 | void token_ifdetach(struct ifnet *); |
| 125 | #endif |
| 126 | |
| 127 | #endif /* !_NET_IF_TOKEN_H_ */ |
| 128 | |