1 /*- 2 * Copyright (c) 1998, Larry Lile 3 * All rights reserved. 4 * 5 * For latest sources and information on this driver, please 6 * go to http://anarchy.stdio.com. 7 * 8 * Questions, comments or suggestions should be directed to 9 * Larry Lile <lile@stdio.com>. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice unmodified, this list of conditions, and the following 16 * disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * $FreeBSD$ 34 * 35 * Information gathered from tokenring@freebsd, /sys/net/ethernet.h and 36 * the Mach token ring driver. 37 */ 38 39 /* 40 * Fundamental constants relating to iso 802.5 41 */ 42 43 #ifndef _NET_ISO88025_H_ 44 #define _NET_ISO88025_H_ 45 46 /* 47 * General ISO 802.5 definitions 48 */ 49 #define ISO88025_ADDR_LEN 6 50 #define ISO88025_CF_LEN 2 51 #define ISO88025_HDR_LEN (ISO88025_CF_LEN + (ISO88025_ADDR_LEN * 2)) 52 #define RCF_LEN 2 53 #define RIF_MAX_RD 14 54 #define RIF_MAX_LEN 16 55 56 #define TR_AC 0x10 57 #define TR_LLC_FRAME 0x40 58 59 #define TR_4MBPS 4000000 60 #define TR_16MBPS 16000000 61 #define TR_100MBPS 100000000 62 63 /* 64 * Source routing 65 */ 66 #define TR_RII 0x80 67 #define TR_RCF_BCST_MASK 0xe000 68 #define TR_RCF_LEN_MASK 0x1f00 69 #define TR_RCF_DIR 0x0080 70 #define TR_RCF_LF_MASK 0x0070 71 72 #define TR_RCF_RIFLEN(x) ((ntohs(x) & TR_RCF_LEN_MASK) >> 8) 73 74 /* 75 * Minimum and maximum packet payload lengths. 76 */ 77 #define ISO88025_MIN_LEN 0 78 #define ISO88025_MAX_LEN_4 4464 79 #define ISO88025_MAX_LEN_16 17960 80 #define ISO88025_MAX_LEN ISO88025_MAX_LEN_16 81 82 /* 83 * A macro to validate a length with 84 */ 85 #define ISO88025_IS_VALID_LEN(foo) \ 86 ((foo) >= ISO88025_MIN_LEN && (foo) <= ISO88025_MAX_LEN) 87 88 /* Access Control field */ 89 #define AC_PRI_MASK 0xe0 /* Priority bits */ 90 #define AC_TOKEN 0x10 /* Token bit: 0=Token, 1=Frame */ 91 #define AC_MONITOR 0x08 /* Monitor */ 92 #define AC_RESV_MASK 0x07 /* Reservation bits */ 93 94 /* Frame Control field */ 95 #define FC_FT_MASK 0xc0 /* Frame Type */ 96 #define FC_FT_MAC 0x00 /* MAC frame */ 97 #define FC_FT_LLC 0x40 /* LLC frame */ 98 #define FC_ATTN_MASK 0x0f /* Attention bits */ 99 #define FC_ATTN_EB 0x01 /* Express buffer */ 100 #define FC_ATTN_BE 0x02 /* Beacon */ 101 #define FC_ATTN_CT 0x03 /* Claim token */ 102 #define FC_ATTN_RP 0x04 /* Ring purge */ 103 #define FC_ATTN_AMP 0x05 /* Active monitor present */ 104 #define FC_ATTN_SMP 0x06 /* Standby monitor present */ 105 106 /* Token Ring destination address */ 107 #define DA_IG 0x80 /* Individual/group address. */ 108 /* 0=Individual, 1=Group */ 109 #define DA_UL 0x40 /* Universal/local address. */ 110 /* 0=Universal, 1=Local */ 111 /* Token Ring source address */ 112 #define SA_RII 0x80 /* Routing information indicator */ 113 #define SA_IG 0x40 /* Individual/group address */ 114 /* 0=Group, 1=Individual */ 115 116 /* 117 * ISO 802.5 physical header 118 */ 119 struct iso88025_header { 120 u_int8_t ac; /* access control field */ 121 u_int8_t fc; /* frame control field */ 122 u_int8_t iso88025_dhost[ISO88025_ADDR_LEN]; /* destination address */ 123 u_int8_t iso88025_shost[ISO88025_ADDR_LEN]; /* source address */ 124 u_int16_t rcf; /* route control field */ 125 u_int16_t rd[RIF_MAX_RD]; /* routing designators */ 126 } __packed; 127 128 struct iso88025_rif { 129 u_int16_t rcf; /* route control field */ 130 u_int16_t rd[RIF_MAX_RD]; /* routing designators */ 131 } __packed; 132 133 struct iso88025_sockaddr_data { 134 u_char ether_dhost[ISO88025_ADDR_LEN]; 135 u_char ether_shost[ISO88025_ADDR_LEN]; 136 u_char ac; 137 u_char fc; 138 }; 139 140 struct iso88025_sockaddr_dl_data { 141 u_short trld_rcf; 142 u_short *trld_route[RIF_MAX_LEN]; 143 }; 144 145 #define ISO88025_MAX(a, b) (((a)>(b))?(a):(b)) 146 #define SDL_ISO88025(s) ((struct iso88025_sockaddr_dl_data *) \ 147 ((s)->sdl_data + \ 148 ISO88025_MAX((s)->sdl_nlen + (s)->sdl_alen + \ 149 (s)->sdl_slen, 12))) 150 151 /* 152 * Structure of a 48-bit iso 802.5 address. 153 * ( We could also add the 16 bit addresses as a union) 154 */ 155 struct iso88025_addr { 156 u_char octet[ISO88025_ADDR_LEN]; 157 }; 158 159 #define ISO88025_MAX_MTU 18000 160 #define ISO88025_DEFAULT_MTU 1500 161 162 #define ISO88025_BPF_UNSUPPORTED 0 163 #define ISO88025_BPF_SUPPORTED 1 164 165 #ifdef _KERNEL 166 void iso88025_ifattach (struct ifnet *, const u_int8_t *, int); 167 void iso88025_ifdetach (struct ifnet *, int); 168 int iso88025_ioctl (struct ifnet *, u_long, caddr_t ); 169 int iso88025_output (struct ifnet *, struct mbuf *, 170 const struct sockaddr *, struct route *); 171 void iso88025_input (struct ifnet *, struct mbuf *); 172 #endif /* _KERNEL */ 173 174 #endif /* !_NET_ISO88025_H_ */ 175