projects / mirror_frr.git / blame
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|---|---|---|
| e9f1847e DS |
1 | /* |
| 2 | * EIGRP Metric Math Functions. | |
| 3 | * Copyright (C) 2013-2016 | |
| 4 | * Authors: | |
| 5 | * Donnie Savage | |
| 6 | * | |
| 7 | * This file is part of GNU Zebra. | |
| 8 | * | |
| 9 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
| 10 | * under the terms of the GNU General Public License as published by the | |
| 11 | * Free Software Foundation; either version 2, or (at your option) any | |
| 12 | * later version. | |
| 13 | * | |
| 14 | * GNU Zebra is distributed in the hope that it will be useful, but | |
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 17 | * General Public License for more details. | |
| 18 | * | |
| 19 | * You should have received a copy of the GNU General Public License along | |
| 20 | * with this program; see the file COPYING; if not, write to the Free Software | |
| 21 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
| 22 | */ | |
| 23 | ||
| 24 | #ifndef _ZEBRA_EIGRP_METRIC_H_ | |
| 25 | #define _ZEBRA_EIGRP_METRIC_H_ | |
| 26 | ||
| 27 | /* Constants */ | |
| 28 | #define EIGRP_BANDWIDTH_MIN 0x1ull /* 1 */ | |
| 29 | #define EIGRP_BANDWIDTH_SCALER 10000000ull /* Inversion value */ | |
| 30 | #define EIGRP_BANDWIDTH_MAX 0xffffffffffffffffull /* 1.84467441x10^19 */ | |
| 31 | ||
| 32 | #define EIGRP_DELAY_MIN 0x1ull /* 1 */ | |
| 33 | #define EIGRP_DELAY_PICO 1000000ull | |
| 34 | #define EIGRP_DELAY_MAX 0xffffffffffffffffull /* 1.84467441x10^19 */ | |
| 35 | ||
| 36 | #define EIGRP_MAX_LOAD 256 | |
| 37 | #define EIGRP_MAX_HOPS 100 | |
| 38 | ||
| 39 | #define EIGRP_INACCESSIBLE 0xFFFFFFFFFFFFFFFFull | |
| 40 | ||
| 41 | #define EIGRP_METRIC_MAX 0xffffffffffffffffull /* 1.84467441x10^19 */ | |
| 42 | #define EIGRP_METRIC_MAX_CLASSIC 0xffffffff | |
| 43 | #define EIGRP_METRIC_SCALER 65536 /* CLASSIC to WIDE conversion */ | |
| 44 | ||
| 45 | #define EIGRP_CLASSIC_MAX 0xffffffff /* 4294967295 */ | |
| 46 | #define EIGRP_CLASSIC_SCALER 256 /* IGRP to EIGRP conversion */ | |
| 47 | ||
| 48 | ||
| 49 | /* Prototypes */ | |
| 50 | extern eigrp_scaled_t eigrp_bandwidth_to_scaled(eigrp_bandwidth_t bw); | |
| 51 | extern eigrp_bandwidth_t eigrp_scaled_to_bandwidth(eigrp_scaled_t scale); | |
| 52 | extern eigrp_scaled_t eigrp_delay_to_scaled(eigrp_delay_t delay); | |
| 53 | extern eigrp_delay_t eigrp_scaled_to_delay(eigrp_scaled_t scale); | |
| 54 | ||
| 55 | extern eigrp_metric_t eigrp_calculate_metrics(struct eigrp *eigrp, | |
| 56 | struct eigrp_metrics metric); | |
| 57 | extern eigrp_metric_t | |
| 58 | eigrp_calculate_total_metrics(struct eigrp *eigrp, | |
| 59 | struct eigrp_route_descriptor *rd); | |
| 60 | extern bool eigrp_metrics_is_same(struct eigrp_metrics m1, | |
| 61 | struct eigrp_metrics m2); | |
| 62 | ||
| 63 | #endif /* _ZEBRA_EIGRP_METRIC_H_ */ |