| /* |
| * IS-IS Rout(e)ing protocol - isis_constants.h |
| * |
| * Copyright (C) 2001,2002 Sampo Saaristo |
| * Tampere University of Technology |
| * Institute of Communications Engineering |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public Licenseas published by the Free |
| * Software Foundation; either version 2 of the License, or (at your option) |
| * any later version. |
| * |
| * This program is distributed in the hope that it will be useful,but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| */ |
| |
| #ifndef ISIS_CONSTANTS_H |
| #define ISIS_CONSTANTS_H |
| |
| /* |
| * Architectural constant values from p. 35 of ISO/IEC 10589 |
| */ |
| |
| #define MAX_LINK_METRIC 63 |
| #define MAX_PATH_METRIC 1023 |
| #define ISO_SAP 0xFE |
| #define INTRADOMAIN_ROUTEING_SELECTOR 0 |
| #define SEQUENCE_MODULUS 4294967296 |
| #define RECEIVE_LSP_BUFFER_SIZE 1492 |
| |
| /* |
| * implementation specific jitter values |
| */ |
| |
| #define IIH_JITTER 25 /* % */ |
| #define MAX_AGE_JITTER 5 /* % */ |
| #define MAX_LSP_GEN_JITTER 5 /* % */ |
| #define CSNP_JITTER 10 /* % */ |
| #define PSNP_JITTER 10 /* % */ |
| |
| #define RANDOM_SPREAD 100000.0 |
| |
| /* |
| * Default values |
| * ISO - 10589 |
| * Section 7.3.21 - Parameters |
| */ |
| #define MAX_AGE 1200 |
| #define ZERO_AGE_LIFETIME 60 |
| #define MAX_LSP_GEN_INTERVAL 900 |
| #define MIN_LSP_GEN_INTERVAL 30 |
| #define MIN_LSP_TRANS_INTERVAL 5 |
| #define ISIS_MIN_LSP_LIFETIME 380 |
| #define CSNP_INTERVAL 10 |
| #define PSNP_INTERVAL 2 |
| #define ISIS_MAX_PATH_SPLITS 3 |
| |
| #define ISIS_LEVELS 2 |
| #define ISIS_LEVEL1 1 |
| #define ISIS_LEVEL2 2 |
| |
| #define HELLO_INTERVAL 10 |
| #define HELLO_MINIMAL HELLO_INTERVAL |
| #define HELLO_MULTIPLIER 3 |
| #define DEFAULT_PRIORITY 64 |
| /* different vendors implement different values 5-10 on average */ |
| #define LSP_GEN_INTERVAL_DEFAULT 10 |
| #define LSP_INTERVAL 33 /* msecs */ |
| #define DEFAULT_CIRCUIT_METRICS 10 |
| #define METRICS_UNSUPPORTED 0x80 |
| #define PERIODIC_SPF_INTERVAL 60 /* at the top of my head */ |
| #define MINIMUM_SPF_INTERVAL 5 /* .. same here */ |
| |
| /* |
| * NLPID values |
| */ |
| #define NLPID_IP 204 |
| #define NLPID_IPV6 142 |
| #define NLPID_SNAP 128 |
| #define NLPID_CLNP 129 |
| #define NLPID_ESIS 130 |
| |
| /* |
| * Return values for functions |
| */ |
| #define ISIS_OK 0 |
| #define ISIS_WARNING 1 |
| #define ISIS_ERROR 2 |
| #define ISIS_CRITICAL 3 |
| |
| /* |
| * IS-IS Circuit Types |
| */ |
| |
| #define IS_LEVEL_1 1 |
| #define IS_LEVEL_2 2 |
| #define IS_LEVEL_1_AND_2 3 |
| |
| #define SNPA_ADDRSTRLEN 18 |
| #define ISIS_SYS_ID_LEN 6 |
| #define SYSID_STRLEN 24 |
| |
| /* |
| * LSP bit masks |
| */ |
| #define LSPBIT_P 0x80 |
| #define LSPBIT_ATT 0x78 |
| #define LSPBIT_OL 0x04 |
| #define LSPBIT_IST 0x03 |
| |
| /* |
| * LSP bit masking macros |
| * taken from tcpdumps |
| * print-isoclns.c |
| */ |
| |
| #define ISIS_MASK_LSP_OL_BIT(x) ((x)&0x4) |
| #define ISIS_MASK_LSP_IS_L1_BIT(x) ((x)&0x1) |
| #define ISIS_MASK_LSP_IS_L2_BIT(x) ((x)&0x2) |
| #define ISIS_MASK_LSP_PARTITION_BIT(x) ((x)&0x80) |
| #define ISIS_MASK_LSP_ATT_BITS(x) ((x)&0x78) |
| #define ISIS_MASK_LSP_ATT_ERROR_BIT(x) ((x)&0x40) |
| #define ISIS_MASK_LSP_ATT_EXPENSE_BIT(x) ((x)&0x20) |
| #define ISIS_MASK_LSP_ATT_DELAY_BIT(x) ((x)&0x10) |
| #define ISIS_MASK_LSP_ATT_DEFAULT_BIT(x) ((x)&0x8) |
| |
| #define LLC_LEN 3 |
| |
| /* we need to be aware of the fact we are using ISO sized |
| * packets, using isomtu = mtu - LLC_LEN |
| */ |
| #define ISO_MTU(C) \ |
| (C->circ_type==CIRCUIT_T_BROADCAST) ? \ |
| (C->interface->mtu - LLC_LEN) : (C->interface->mtu) |
| |
| #ifndef ETH_ALEN |
| #define ETH_ALEN 6 |
| #endif |
| |
| #endif /* ISIS_CONSTANTS_H */ |