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1.1 root 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: * @(#)pk.h 7.8 (Berkeley) 4/30/91
39: */
40:
41: /*
42: *
43: * X.25 Packet Level Definitions:
44: *
45: */
46:
47: /* Packet type identifier field defintions. */
48:
49: #define X25_CALL 11
50: #define X25_CALL_ACCEPTED 15
51: #define X25_CLEAR 19
52: #define X25_CLEAR_CONFIRM 23
53: #define X25_DATA 0
54: #define X25_INTERRUPT 35
55: #define X25_INTERRUPT_CONFIRM 39
56:
57: #define X25_RR 1
58: #define X25_RNR 5
59: #define X25_REJECT 9
60: #define X25_RESET 27
61: #define X25_RESET_CONFIRM 31
62: #define X25_DIAGNOSTIC 241
63:
64: #define X25_RESTART 251
65: #define X25_RESTART_CONFIRM 255
66:
67: /* Restart cause field definitions. */
68:
69: #define X25_RESTART_LOCAL_PROCEDURE_ERROR 1
70: #define X25_RESTART_NETWORK_CONGESTION 3
71: #define X25_RESTART_NETWORK_OPERATIONAL 7
72:
73: /* Miscellaneous definitions. */
74:
75: #define DATA_PACKET_DESIGNATOR 0x01
76: #define RR_OR_RNR_PACKET_DESIGNATOR 0x02
77: #define RR_PACKET_DESIGNATOR 0x04
78:
79: #define DEFAULT_WINDOW_SIZE 2
80: #define MODULUS 8
81:
82: #define ADDRLN 1
83: #define MAXADDRLN 15
84: #define FACILITIESLN 1
85: #define MAXFACILITIESLN 10
86: #define MAXUSERDATA 16
87: #define MAXCALLINFOLN 1+15+1+10+16
88:
89: #define PACKET_OK 0
90: #define IGNORE_PACKET 1
91: #define ERROR_PACKET 2
92:
93: typedef char bool;
94: #define FALSE 0
95: #define TRUE 1
96:
97: /*
98: * X.25 Packet format definitions
99: * This will eventually have to be rewritten without reference
100: * to bit fields, to be ansi C compliant and allignment safe.
101: */
102:
103: #if BYTE_ORDER == BIG_ENDIAN
104: #define ORDER2(a, b) a , b
105: #define ORDER4(a, b, c, d) a , b , c , d
106: #endif
107:
108: #if BYTE_ORDER == LITTLE_ENDIAN
109: #define ORDER2(a, b) b , a
110: #define ORDER4(a, b, c, d) d , c , b , a
111: #endif
112:
113: typedef u_char octet;
114:
115: struct x25_calladdr {
116: octet ORDER2(calling_addrlen:4, called_addrlen:4);
117: octet address_field[MAXADDRLN];
118: };
119:
120: struct x25_packet {
121: octet ORDER4(q_bit:1, d_bit:1, fmt_identifier:2, lc_group_number:4);
122: octet logical_channel_number;
123: octet packet_type;
124: octet packet_data;
125: };
126:
127: struct data_packet {
128: octet ORDER4(pr:3, m_bit:1, ps:3, z:1);
129: };
130:
131: #define FACILITIES_REVERSE_CHARGE 0x1
132: #define FACILITIES_THROUGHPUT 0x2
133: #define FACILITIES_PACKETSIZE 0x42
134: #define FACILITIES_WINDOWSIZE 0x43
135:
136: #define PKHEADERLN 3
137:
138:
139: #define PR(xp) (((struct data_packet *)&xp -> packet_type)->pr)
140: #define PS(xp) (((struct data_packet *)&xp -> packet_type)->ps)
141: #define MBIT(xp) (((struct data_packet *)&xp -> packet_type)->m_bit)
142: #define LCN(xp) (xp -> logical_channel_number + \
143: (xp -> lc_group_number ? (xp -> lc_group_number >> 8) : 0))
144: #define SET_LCN(xp, lcn) ((xp -> logical_channel_number = lcn), \
145: (xp -> lc_group_number = lcn > 255 ? lcn >> 8 : 0))
146:
147: struct mbuf *pk_template ();
148:
149: /* Define X.25 packet level states. */
150:
151: /* Call setup and clearing substates. */
152:
153: #define LISTEN 0
154: #define READY 1
155: #define RECEIVED_CALL 2
156: #define SENT_CALL 3
157: #define DATA_TRANSFER 4
158: #define RECEIVED_CLEAR 5
159: #define SENT_CLEAR 6
160:
161: /* DTE states. */
162:
163: #define DTE_WAITING 7
164: #define DTE_RECEIVED_RESTART 8
165: #define DTE_SENT_RESTART 9
166: #define DTE_READY 0
167:
168: #define MAXSTATES 10
169:
170: /*
171: * The following definitions are used in a switch statement after
172: * determining the packet type. These values are returned by the
173: * pk_decode procedure.
174: */
175:
176: #define CALL 0 * MAXSTATES
177: #define CALL_ACCEPTED 1 * MAXSTATES
178: #define CLEAR 2 * MAXSTATES
179: #define CLEAR_CONF 3 * MAXSTATES
180: #define DATA 4 * MAXSTATES
181: #define INTERRUPT 5 * MAXSTATES
182: #define INTERRUPT_CONF 6 * MAXSTATES
183: #define RR 7 * MAXSTATES
184: #define RNR 8 * MAXSTATES
185: #define RESET 9 * MAXSTATES
186: #define RESET_CONF 10 * MAXSTATES
187: #define RESTART 11 * MAXSTATES
188: #define RESTART_CONF 12 * MAXSTATES
189: #define REJECT 13 * MAXSTATES
190: #define DIAG_TYPE 14 * MAXSTATES
191: #define INVALID_PACKET 15 * MAXSTATES
192: #define DELETE_PACKET INVALID_PACKET
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