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eb5d44eb | 1 | /* |
2 | * IS-IS Rout(e)ing protocol - isis_constants.h | |
3 | * | |
4 | * Copyright (C) 2001,2002 Sampo Saaristo | |
5 | * Tampere University of Technology | |
6 | * Institute of Communications Engineering | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public Licenseas published by the Free | |
10 | * Software Foundation; either version 2 of the License, or (at your option) | |
11 | * any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful,but WITHOUT | |
14 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
16 | * more details. | |
17 | ||
18 | * You should have received a copy of the GNU General Public License along | |
19 | * with this program; if not, write to the Free Software Foundation, Inc., | |
20 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
21 | */ | |
22 | ||
23 | #ifndef ISIS_CONSTANTS_H | |
24 | #define ISIS_CONSTANTS_H | |
25 | ||
26 | /* | |
27 | * Architectural constant values from p. 35 of ISO/IEC 10589 | |
f390d2c7 | 28 | */ |
eb5d44eb | 29 | |
3f045a08 JB |
30 | #define MAX_NARROW_LINK_METRIC 63 |
31 | #define MAX_NARROW_PATH_METRIC 1023 | |
32 | #define MAX_WIDE_LINK_METRIC 0x00FFFFFF /* RFC4444 */ | |
33 | #define MAX_WIDE_PATH_METRIC 0xFE000000 /* RFC3787 */ | |
eb5d44eb | 34 | #define ISO_SAP 0xFE |
35 | #define INTRADOMAIN_ROUTEING_SELECTOR 0 | |
36 | #define SEQUENCE_MODULUS 4294967296 | |
37 | #define RECEIVE_LSP_BUFFER_SIZE 1492 | |
38 | ||
39 | /* | |
40 | * implementation specific jitter values | |
41 | */ | |
42 | ||
3f045a08 | 43 | #define IIH_JITTER 10 /* % */ |
f390d2c7 | 44 | #define MAX_AGE_JITTER 5 /* % */ |
45 | #define MAX_LSP_GEN_JITTER 5 /* % */ | |
46 | #define CSNP_JITTER 10 /* % */ | |
47 | #define PSNP_JITTER 10 /* % */ | |
eb5d44eb | 48 | |
49 | #define RANDOM_SPREAD 100000.0 | |
50 | ||
3f045a08 JB |
51 | #define ISIS_LEVELS 2 |
52 | #define ISIS_LEVEL1 1 | |
53 | #define ISIS_LEVEL2 2 | |
54 | ||
eb5d44eb | 55 | /* |
56 | * Default values | |
3f045a08 JB |
57 | * ISO - 10589 Section 7.3.21 - Parameters |
58 | * RFC 4444 | |
eb5d44eb | 59 | */ |
60 | #define MAX_AGE 1200 | |
61 | #define ZERO_AGE_LIFETIME 60 | |
3f045a08 JB |
62 | #define MIN_LSP_LIFETIME 350 |
63 | #define MAX_LSP_LIFETIME 65535 | |
64 | #define DEFAULT_LSP_LIFETIME 1200 | |
65 | ||
66 | #define MIN_MAX_LSP_GEN_INTERVAL 1 | |
67 | #define MAX_MAX_LSP_GEN_INTERVAL 65235 | |
68 | #define DEFAULT_MAX_LSP_GEN_INTERVAL 900 | |
69 | ||
70 | #define MIN_MIN_LSP_GEN_INTERVAL 1 | |
71 | #define MAX_MIN_LSP_GEN_INTERVAL 120 /* RFC 4444 says 65535 */ | |
72 | #define DEFAULT_MIN_LSP_GEN_INTERVAL 30 | |
73 | ||
eb5d44eb | 74 | #define MIN_LSP_TRANS_INTERVAL 5 |
eb5d44eb | 75 | |
3f045a08 JB |
76 | #define MIN_CSNP_INTERVAL 1 |
77 | #define MAX_CSNP_INTERVAL 600 | |
78 | #define DEFAULT_CSNP_INTERVAL 10 | |
79 | ||
80 | #define MIN_PSNP_INTERVAL 1 | |
81 | #define MAX_PSNP_INTERVAL 120 | |
82 | #define DEFAULT_PSNP_INTERVAL 2 | |
83 | ||
84 | #define MIN_HELLO_INTERVAL 1 | |
85 | #define MAX_HELLO_INTERVAL 600 | |
86 | #define DEFAULT_HELLO_INTERVAL 3 | |
87 | ||
88 | #define MIN_HELLO_MULTIPLIER 2 | |
89 | #define MAX_HELLO_MULTIPLIER 100 | |
90 | #define DEFAULT_HELLO_MULTIPLIER 10 | |
eb5d44eb | 91 | |
3f045a08 JB |
92 | #define MIN_PRIORITY 0 |
93 | #define MAX_PRIORITY 127 | |
eb5d44eb | 94 | #define DEFAULT_PRIORITY 64 |
3f045a08 JB |
95 | |
96 | /* min and max metric varies by new vs old metric types */ | |
97 | #define DEFAULT_CIRCUIT_METRIC 10 | |
98 | ||
99 | #define METRICS_UNSUPPORTED 0x80 | |
100 | ||
101 | #define MINIMUM_SPF_INTERVAL 1 | |
102 | ||
103 | #define ISIS_MAX_PATH_SPLITS 64 | |
eb5d44eb | 104 | |
105 | /* | |
106 | * NLPID values | |
107 | */ | |
108 | #define NLPID_IP 204 | |
109 | #define NLPID_IPV6 142 | |
2097cd8a | 110 | #define NLPID_SNAP 128 |
111 | #define NLPID_CLNP 129 | |
112 | #define NLPID_ESIS 130 | |
eb5d44eb | 113 | |
114 | /* | |
115 | * Return values for functions | |
116 | */ | |
117 | #define ISIS_OK 0 | |
118 | #define ISIS_WARNING 1 | |
119 | #define ISIS_ERROR 2 | |
120 | #define ISIS_CRITICAL 3 | |
121 | ||
122 | /* | |
123 | * IS-IS Circuit Types | |
124 | */ | |
125 | ||
126 | #define IS_LEVEL_1 1 | |
127 | #define IS_LEVEL_2 2 | |
128 | #define IS_LEVEL_1_AND_2 3 | |
129 | ||
130 | #define SNPA_ADDRSTRLEN 18 | |
131 | #define ISIS_SYS_ID_LEN 6 | |
3f045a08 | 132 | #define ISIS_NSEL_LEN 1 |
eb5d44eb | 133 | #define SYSID_STRLEN 24 |
134 | ||
135 | /* | |
136 | * LSP bit masks | |
137 | */ | |
138 | #define LSPBIT_P 0x80 | |
139 | #define LSPBIT_ATT 0x78 | |
140 | #define LSPBIT_OL 0x04 | |
141 | #define LSPBIT_IST 0x03 | |
142 | ||
143 | /* | |
144 | * LSP bit masking macros | |
145 | * taken from tcpdumps | |
146 | * print-isoclns.c | |
147 | */ | |
148 | ||
149 | #define ISIS_MASK_LSP_OL_BIT(x) ((x)&0x4) | |
150 | #define ISIS_MASK_LSP_IS_L1_BIT(x) ((x)&0x1) | |
151 | #define ISIS_MASK_LSP_IS_L2_BIT(x) ((x)&0x2) | |
152 | #define ISIS_MASK_LSP_PARTITION_BIT(x) ((x)&0x80) | |
153 | #define ISIS_MASK_LSP_ATT_BITS(x) ((x)&0x78) | |
154 | #define ISIS_MASK_LSP_ATT_ERROR_BIT(x) ((x)&0x40) | |
155 | #define ISIS_MASK_LSP_ATT_EXPENSE_BIT(x) ((x)&0x20) | |
156 | #define ISIS_MASK_LSP_ATT_DELAY_BIT(x) ((x)&0x10) | |
157 | #define ISIS_MASK_LSP_ATT_DEFAULT_BIT(x) ((x)&0x8) | |
158 | ||
159 | #define LLC_LEN 3 | |
160 | ||
161 | /* we need to be aware of the fact we are using ISO sized | |
162 | * packets, using isomtu = mtu - LLC_LEN | |
163 | */ | |
164 | #define ISO_MTU(C) \ | |
3f045a08 JB |
165 | ((if_is_broadcast ((C)->interface)) ? \ |
166 | (C->interface->mtu - LLC_LEN) : (C->interface->mtu)) | |
eb5d44eb | 167 | |
168 | #ifndef ETH_ALEN | |
169 | #define ETH_ALEN 6 | |
170 | #endif | |
171 | ||
f390d2c7 | 172 | #endif /* ISIS_CONSTANTS_H */ |