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 */ 173