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658d6a25 KS |
1 | /* |
2 | * Copyright (c) University of British Columbia, 1984 | |
8ef71a63 | 3 | * Copyright (c) 1990, 1992 The Regents of the University of California. |
658d6a25 KS |
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 | * %sccs.include.redist.c% | |
11 | * | |
8ef71a63 | 12 | * @(#)pk.h 7.10 (Berkeley) %G% |
658d6a25 | 13 | */ |
5b7aaaef KS |
14 | |
15 | /* | |
16 | * | |
17 | * X.25 Packet Level Definitions: | |
18 | * | |
19 | */ | |
20 | ||
21 | /* Packet type identifier field defintions. */ | |
22 | ||
23 | #define X25_CALL 11 | |
24 | #define X25_CALL_ACCEPTED 15 | |
25 | #define X25_CLEAR 19 | |
26 | #define X25_CLEAR_CONFIRM 23 | |
27 | #define X25_DATA 0 | |
28 | #define X25_INTERRUPT 35 | |
29 | #define X25_INTERRUPT_CONFIRM 39 | |
30 | ||
31 | #define X25_RR 1 | |
32 | #define X25_RNR 5 | |
94a9d981 | 33 | #define X25_REJECT 9 |
5b7aaaef KS |
34 | #define X25_RESET 27 |
35 | #define X25_RESET_CONFIRM 31 | |
94a9d981 | 36 | #define X25_DIAGNOSTIC 241 |
5b7aaaef KS |
37 | |
38 | #define X25_RESTART 251 | |
39 | #define X25_RESTART_CONFIRM 255 | |
40 | ||
41 | /* Restart cause field definitions. */ | |
42 | ||
8ef71a63 | 43 | #define X25_RESTART_DTE_ORIGINATED 0 |
5b7aaaef KS |
44 | #define X25_RESTART_LOCAL_PROCEDURE_ERROR 1 |
45 | #define X25_RESTART_NETWORK_CONGESTION 3 | |
46 | #define X25_RESTART_NETWORK_OPERATIONAL 7 | |
8ef71a63 KS |
47 | #define X25_RESTART_DTE_ORIGINATED2 128 |
48 | ||
5b7aaaef KS |
49 | |
50 | /* Miscellaneous definitions. */ | |
51 | ||
52 | #define DATA_PACKET_DESIGNATOR 0x01 | |
53 | #define RR_OR_RNR_PACKET_DESIGNATOR 0x02 | |
54 | #define RR_PACKET_DESIGNATOR 0x04 | |
55 | ||
56 | #define DEFAULT_WINDOW_SIZE 2 | |
57 | #define MODULUS 8 | |
58 | ||
59 | #define ADDRLN 1 | |
60 | #define MAXADDRLN 15 | |
61 | #define FACILITIESLN 1 | |
62 | #define MAXFACILITIESLN 10 | |
63 | #define MAXUSERDATA 16 | |
64 | #define MAXCALLINFOLN 1+15+1+10+16 | |
65 | ||
66 | #define PACKET_OK 0 | |
67 | #define IGNORE_PACKET 1 | |
68 | #define ERROR_PACKET 2 | |
69 | ||
70 | typedef char bool; | |
71 | #define FALSE 0 | |
72 | #define TRUE 1 | |
73 | ||
74 | /* | |
75 | * X.25 Packet format definitions | |
658d6a25 KS |
76 | * This will eventually have to be rewritten without reference |
77 | * to bit fields, to be ansi C compliant and allignment safe. | |
5b7aaaef KS |
78 | */ |
79 | ||
658d6a25 | 80 | typedef u_char octet; |
5b7aaaef | 81 | |
658d6a25 | 82 | struct x25_calladdr { |
8ef71a63 | 83 | octet addrlens; |
658d6a25 | 84 | octet address_field[MAXADDRLN]; |
4507dea2 | 85 | }; |
5b7aaaef KS |
86 | |
87 | struct x25_packet { | |
8ef71a63 | 88 | octet bits; |
5b7aaaef KS |
89 | octet logical_channel_number; |
90 | octet packet_type; | |
91 | octet packet_data; | |
92 | }; | |
8ef71a63 | 93 | #define packet_cause packet_data |
5b7aaaef KS |
94 | |
95 | struct data_packet { | |
8ef71a63 | 96 | octet bits; |
5b7aaaef KS |
97 | }; |
98 | ||
658d6a25 KS |
99 | #define FACILITIES_REVERSE_CHARGE 0x1 |
100 | #define FACILITIES_THROUGHPUT 0x2 | |
101 | #define FACILITIES_PACKETSIZE 0x42 | |
102 | #define FACILITIES_WINDOWSIZE 0x43 | |
103 | ||
104 | #define PKHEADERLN 3 | |
105 | ||
8ef71a63 KS |
106 | #define DP(xp) (((struct data_packet *)&(xp) -> packet_type) -> bits) |
107 | #define PS(xp) X25GBITS(DP(xp), p_s) | |
108 | #define PR(xp) X25GBITS(DP(xp), p_r) | |
109 | #define MBIT(xp) X25GBITS(DP(xp), m_bit) | |
110 | #define SPR(xp, v) X25SBITS(DP(xp), p_r, (v)) | |
111 | #define SPS(xp, v) X25SBITS(DP(xp), p_s, (v)) | |
112 | #define SMBIT(xp, v) X25SBITS(DP(xp), m_bit, (v)) | |
658d6a25 | 113 | |
a71ac3e2 | 114 | #define LCN(xp) (xp -> logical_channel_number + \ |
8ef71a63 | 115 | (X25GBITS(xp -> bits, lc_group_number) ? (X25GBITS(xp -> bits, lc_group_number) << 8) : 0)) |
a71ac3e2 | 116 | #define SET_LCN(xp, lcn) ((xp -> logical_channel_number = lcn), \ |
8ef71a63 | 117 | (X25SBITS(xp -> bits, lc_group_number, lcn > 255 ? lcn >> 8 : 0))) |
5b7aaaef | 118 | |
d3b78629 | 119 | struct mbuf *pk_template (); |
5b7aaaef KS |
120 | |
121 | /* Define X.25 packet level states. */ | |
122 | ||
123 | /* Call setup and clearing substates. */ | |
124 | ||
125 | #define LISTEN 0 | |
126 | #define READY 1 | |
127 | #define RECEIVED_CALL 2 | |
128 | #define SENT_CALL 3 | |
129 | #define DATA_TRANSFER 4 | |
130 | #define RECEIVED_CLEAR 5 | |
131 | #define SENT_CLEAR 6 | |
132 | ||
133 | /* DTE states. */ | |
134 | ||
135 | #define DTE_WAITING 7 | |
136 | #define DTE_RECEIVED_RESTART 8 | |
137 | #define DTE_SENT_RESTART 9 | |
138 | #define DTE_READY 0 | |
139 | ||
8ef71a63 KS |
140 | /* Cleaning out ... */ |
141 | ||
142 | #define LCN_ZOMBIE 10 | |
143 | ||
144 | #define MAXSTATES 11 | |
5b7aaaef KS |
145 | |
146 | /* | |
147 | * The following definitions are used in a switch statement after | |
148 | * determining the packet type. These values are returned by the | |
149 | * pk_decode procedure. | |
150 | */ | |
151 | ||
152 | #define CALL 0 * MAXSTATES | |
153 | #define CALL_ACCEPTED 1 * MAXSTATES | |
154 | #define CLEAR 2 * MAXSTATES | |
155 | #define CLEAR_CONF 3 * MAXSTATES | |
156 | #define DATA 4 * MAXSTATES | |
157 | #define INTERRUPT 5 * MAXSTATES | |
158 | #define INTERRUPT_CONF 6 * MAXSTATES | |
159 | #define RR 7 * MAXSTATES | |
160 | #define RNR 8 * MAXSTATES | |
161 | #define RESET 9 * MAXSTATES | |
162 | #define RESET_CONF 10 * MAXSTATES | |
163 | #define RESTART 11 * MAXSTATES | |
164 | #define RESTART_CONF 12 * MAXSTATES | |
94a9d981 | 165 | #define REJECT 13 * MAXSTATES |
5336ccc3 | 166 | #define DIAG_TYPE 14 * MAXSTATES |
94a9d981 | 167 | #define INVALID_PACKET 15 * MAXSTATES |
5b7aaaef | 168 | #define DELETE_PACKET INVALID_PACKET |
8ef71a63 KS |
169 | |
170 | /* | |
171 | * The following definitions are used by the restart procedures | |
172 | * for noting wether the PLE is supposed to behave as DTE or DCE | |
173 | * (essentially necessary for operation over LLC2) | |
174 | */ | |
175 | #define DTE_DXERESOLVING 0x0001 | |
176 | #define DTE_PLAYDTE 0x0002 | |
177 | #define DTE_PLAYDCE 0x0004 | |
178 | #define DTE_CONNECTPENDING 0x0010 | |
179 | #define DTE_PRETENDDTE 0x0020 | |
180 | ||
181 | #define MAXRESTARTCOLLISIONS 10 |