| 1 | /* |
| 2 | * Copyright (c) University of British Columbia, 1984 |
| 3 | * Copyright (c) 1990 The Regents of the University of California. |
| 4 | * All rights reserved. |
| 5 | * |
| 6 | * This code is derived from software contributed to Berkeley by |
| 7 | * the Laboratory for Computation Vision and the Computer Science Department |
| 8 | * of the University of British Columbia. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * 3. All advertising materials mentioning features or use of this software |
| 19 | * must display the following acknowledgement: |
| 20 | * This product includes software developed by the University of |
| 21 | * California, Berkeley and its contributors. |
| 22 | * 4. Neither the name of the University nor the names of its contributors |
| 23 | * may be used to endorse or promote products derived from this software |
| 24 | * without specific prior written permission. |
| 25 | * |
| 26 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 27 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 28 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 29 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 30 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 31 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 32 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 33 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 34 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 35 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 36 | * SUCH DAMAGE. |
| 37 | * |
| 38 | * from: @(#)pk.h 7.8 (Berkeley) 4/30/91 |
| 39 | * $Id: pk.h,v 1.2 1993/10/16 19:46:46 rgrimes Exp $ |
| 40 | */ |
| 41 | |
| 42 | #ifndef _NETCCITT_PK_H_ |
| 43 | #define _NETCCITT_PK_H_ 1 |
| 44 | |
| 45 | /* |
| 46 | * |
| 47 | * X.25 Packet Level Definitions: |
| 48 | * |
| 49 | */ |
| 50 | |
| 51 | /* Packet type identifier field defintions. */ |
| 52 | |
| 53 | #define X25_CALL 11 |
| 54 | #define X25_CALL_ACCEPTED 15 |
| 55 | #define X25_CLEAR 19 |
| 56 | #define X25_CLEAR_CONFIRM 23 |
| 57 | #define X25_DATA 0 |
| 58 | #define X25_INTERRUPT 35 |
| 59 | #define X25_INTERRUPT_CONFIRM 39 |
| 60 | |
| 61 | #define X25_RR 1 |
| 62 | #define X25_RNR 5 |
| 63 | #define X25_REJECT 9 |
| 64 | #define X25_RESET 27 |
| 65 | #define X25_RESET_CONFIRM 31 |
| 66 | #define X25_DIAGNOSTIC 241 |
| 67 | |
| 68 | #define X25_RESTART 251 |
| 69 | #define X25_RESTART_CONFIRM 255 |
| 70 | |
| 71 | /* Restart cause field definitions. */ |
| 72 | |
| 73 | #define X25_RESTART_LOCAL_PROCEDURE_ERROR 1 |
| 74 | #define X25_RESTART_NETWORK_CONGESTION 3 |
| 75 | #define X25_RESTART_NETWORK_OPERATIONAL 7 |
| 76 | |
| 77 | /* Miscellaneous definitions. */ |
| 78 | |
| 79 | #define DATA_PACKET_DESIGNATOR 0x01 |
| 80 | #define RR_OR_RNR_PACKET_DESIGNATOR 0x02 |
| 81 | #define RR_PACKET_DESIGNATOR 0x04 |
| 82 | |
| 83 | #define DEFAULT_WINDOW_SIZE 2 |
| 84 | #define MODULUS 8 |
| 85 | |
| 86 | #define ADDRLN 1 |
| 87 | #define MAXADDRLN 15 |
| 88 | #define FACILITIESLN 1 |
| 89 | #define MAXFACILITIESLN 10 |
| 90 | #define MAXUSERDATA 16 |
| 91 | #define MAXCALLINFOLN 1+15+1+10+16 |
| 92 | |
| 93 | #define PACKET_OK 0 |
| 94 | #define IGNORE_PACKET 1 |
| 95 | #define ERROR_PACKET 2 |
| 96 | |
| 97 | typedef char bool; |
| 98 | #define FALSE 0 |
| 99 | #define TRUE 1 |
| 100 | |
| 101 | /* |
| 102 | * X.25 Packet format definitions |
| 103 | * This will eventually have to be rewritten without reference |
| 104 | * to bit fields, to be ansi C compliant and allignment safe. |
| 105 | */ |
| 106 | |
| 107 | #if BYTE_ORDER == BIG_ENDIAN |
| 108 | #define ORDER2(a, b) a , b |
| 109 | #define ORDER4(a, b, c, d) a , b , c , d |
| 110 | #endif |
| 111 | |
| 112 | #if BYTE_ORDER == LITTLE_ENDIAN |
| 113 | #define ORDER2(a, b) b , a |
| 114 | #define ORDER4(a, b, c, d) d , c , b , a |
| 115 | #endif |
| 116 | |
| 117 | typedef u_char octet; |
| 118 | |
| 119 | struct x25_calladdr { |
| 120 | octet ORDER2(calling_addrlen:4, called_addrlen:4); |
| 121 | octet address_field[MAXADDRLN]; |
| 122 | }; |
| 123 | |
| 124 | struct x25_packet { |
| 125 | octet ORDER4(q_bit:1, d_bit:1, fmt_identifier:2, lc_group_number:4); |
| 126 | octet logical_channel_number; |
| 127 | octet packet_type; |
| 128 | octet packet_data; |
| 129 | }; |
| 130 | |
| 131 | struct data_packet { |
| 132 | octet ORDER4(pr:3, m_bit:1, ps:3, z:1); |
| 133 | }; |
| 134 | |
| 135 | #define FACILITIES_REVERSE_CHARGE 0x1 |
| 136 | #define FACILITIES_THROUGHPUT 0x2 |
| 137 | #define FACILITIES_PACKETSIZE 0x42 |
| 138 | #define FACILITIES_WINDOWSIZE 0x43 |
| 139 | |
| 140 | #define PKHEADERLN 3 |
| 141 | |
| 142 | |
| 143 | #define PR(xp) (((struct data_packet *)&xp -> packet_type)->pr) |
| 144 | #define PS(xp) (((struct data_packet *)&xp -> packet_type)->ps) |
| 145 | #define MBIT(xp) (((struct data_packet *)&xp -> packet_type)->m_bit) |
| 146 | #define LCN(xp) (xp -> logical_channel_number + \ |
| 147 | (xp -> lc_group_number ? (xp -> lc_group_number >> 8) : 0)) |
| 148 | #define SET_LCN(xp, lcn) ((xp -> logical_channel_number = lcn), \ |
| 149 | (xp -> lc_group_number = lcn > 255 ? lcn >> 8 : 0)) |
| 150 | |
| 151 | struct mbuf *pk_template (); |
| 152 | |
| 153 | /* Define X.25 packet level states. */ |
| 154 | |
| 155 | /* Call setup and clearing substates. */ |
| 156 | |
| 157 | #define LISTEN 0 |
| 158 | #define READY 1 |
| 159 | #define RECEIVED_CALL 2 |
| 160 | #define SENT_CALL 3 |
| 161 | #define DATA_TRANSFER 4 |
| 162 | #define RECEIVED_CLEAR 5 |
| 163 | #define SENT_CLEAR 6 |
| 164 | |
| 165 | /* DTE states. */ |
| 166 | |
| 167 | #define DTE_WAITING 7 |
| 168 | #define DTE_RECEIVED_RESTART 8 |
| 169 | #define DTE_SENT_RESTART 9 |
| 170 | #define DTE_READY 0 |
| 171 | |
| 172 | #define MAXSTATES 10 |
| 173 | |
| 174 | /* |
| 175 | * The following definitions are used in a switch statement after |
| 176 | * determining the packet type. These values are returned by the |
| 177 | * pk_decode procedure. |
| 178 | */ |
| 179 | |
| 180 | #define CALL 0 * MAXSTATES |
| 181 | #define CALL_ACCEPTED 1 * MAXSTATES |
| 182 | #define CLEAR 2 * MAXSTATES |
| 183 | #define CLEAR_CONF 3 * MAXSTATES |
| 184 | #define DATA 4 * MAXSTATES |
| 185 | #define INTERRUPT 5 * MAXSTATES |
| 186 | #define INTERRUPT_CONF 6 * MAXSTATES |
| 187 | #define RR 7 * MAXSTATES |
| 188 | #define RNR 8 * MAXSTATES |
| 189 | #define RESET 9 * MAXSTATES |
| 190 | #define RESET_CONF 10 * MAXSTATES |
| 191 | #define RESTART 11 * MAXSTATES |
| 192 | #define RESTART_CONF 12 * MAXSTATES |
| 193 | #define REJECT 13 * MAXSTATES |
| 194 | #define DIAG_TYPE 14 * MAXSTATES |
| 195 | #define INVALID_PACKET 15 * MAXSTATES |
| 196 | #define DELETE_PACKET INVALID_PACKET |
| 197 | #endif /* _NETCCITT_PK_H_ */ |