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
28: */
29:
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 */
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:
43: #define IIH_JITTER 10 /* % */
44: #define MAX_AGE_JITTER 5 /* % */
45: #define MAX_LSP_GEN_JITTER 5 /* % */
46: #define CSNP_JITTER 10 /* % */
47: #define PSNP_JITTER 10 /* % */
48:
49: #define RANDOM_SPREAD 100000.0
50:
51: #define ISIS_LEVELS 2
52: #define ISIS_LEVEL1 1
53: #define ISIS_LEVEL2 2
54:
55: /*
56: * Default values
57: * ISO - 10589 Section 7.3.21 - Parameters
58: * RFC 4444
59: */
60: #define MAX_AGE 1200
61: #define ZERO_AGE_LIFETIME 60
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:
74: #define MIN_LSP_TRANS_INTERVAL 5
75:
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
91:
92: #define MIN_PRIORITY 0
93: #define MAX_PRIORITY 127
94: #define DEFAULT_PRIORITY 64
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
104:
105: /*
106: * NLPID values
107: */
108: #define NLPID_IP 204
109: #define NLPID_IPV6 142
110: #define NLPID_SNAP 128
111: #define NLPID_CLNP 129
112: #define NLPID_ESIS 130
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
132: #define ISIS_NSEL_LEN 1
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) \
165: ((if_is_broadcast ((C)->interface)) ? \
166: (C->interface->mtu - LLC_LEN) : (C->interface->mtu))
167:
168: #ifndef ETH_ALEN
169: #define ETH_ALEN 6
170: #endif
171:
172: #endif /* ISIS_CONSTANTS_H */
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