proxmox-mirrors/mirror_frr
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_frr synced 2025-08-14 06:12:32 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

eigrpd: Introduce eigrp_metric.[ch] and eigrp_types.h

Browse Source 
Add these file and introduce some new fundamental types

Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Signed-off-by: Donnie Savage <diivious@hotmail.com>
This commit is contained in:
Donnie Savage 2020-12-11 17:05:59 -05:00 committed by Donald Sharp
parent dc4accdd53
commit e9f1847e25
12 changed files with 258 additions and 110 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
eigrpd/eigrp_fsm.c
View File

@ -77,6 +77,7 @@
#include "linklist.h"
#include "vty.h"
#include "eigrpd/eigrp_types.h"
#include "eigrpd/eigrp_structs.h"
#include "eigrpd/eigrpd.h"
#include "eigrpd/eigrp_interface.h"
@ -88,6 +89,7 @@
#include "eigrpd/eigrp_dump.h"
#include "eigrpd/eigrp_topology.h"
#include "eigrpd/eigrp_fsm.h"
#include "eigrpd/eigrp_metric.h"
/*
* Prototypes

32
eigrpd/eigrp_interface.c
View File

@ -55,6 +55,8 @@
#include "eigrpd/eigrp_memory.h"
#include "eigrpd/eigrp_fsm.h"
#include "eigrpd/eigrp_dump.h"
#include "eigrpd/eigrp_types.h"
#include "eigrpd/eigrp_metric.h"
struct eigrp_interface *eigrp_if_new(struct eigrp *eigrp, struct interface *ifp,
struct prefix *p)
@ -495,33 +497,3 @@ struct eigrp_interface *eigrp_if_lookup_by_name(struct eigrp *eigrp,
return NULL;
}
uint32_t eigrp_bandwidth_to_scaled(uint32_t bandwidth)
{
uint64_t temp_bandwidth = (256ull * 10000000) / bandwidth;
temp_bandwidth = temp_bandwidth < EIGRP_MAX_METRIC ? temp_bandwidth
: EIGRP_MAX_METRIC;
return (uint32_t)temp_bandwidth;
}
uint32_t eigrp_scaled_to_bandwidth(uint32_t scaled)
{
uint64_t temp_scaled = scaled * (256ull * 10000000);
temp_scaled =
temp_scaled < EIGRP_MAX_METRIC ? temp_scaled : EIGRP_MAX_METRIC;
return (uint32_t)temp_scaled;
}
uint32_t eigrp_delay_to_scaled(uint32_t delay)
{
return delay * 256;
}
uint32_t eigrp_scaled_to_delay(uint32_t scaled)
{
return scaled / 256;
}

5
eigrpd/eigrp_interface.h
View File

@ -58,9 +58,4 @@ extern struct eigrp_interface *eigrp_if_lookup_by_name(struct eigrp *,
/* Simulate down/up on the interface. */
extern void eigrp_if_reset(struct interface *);
extern uint32_t eigrp_bandwidth_to_scaled(uint32_t);
extern uint32_t eigrp_scaled_to_bandwidth(uint32_t);
extern uint32_t eigrp_delay_to_scaled(uint32_t);
extern uint32_t eigrp_scaled_to_delay(uint32_t);
#endif /* ZEBRA_EIGRP_INTERFACE_H_ */

146
eigrpd/eigrp_metric.c Normal file
View File

@ -0,0 +1,146 @@
/*
* EIGRP Metric Math Functions.
* Copyright (C) 2013-2016
* Authors:
* Donnie Savage
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* GNU Zebra 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; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "eigrpd/eigrp_structs.h"
#include "eigrpd/eigrpd.h"
#include "eigrpd/eigrp_types.h"
#include "eigrpd/eigrp_metric.h"
eigrp_scaled_t eigrp_bandwidth_to_scaled(eigrp_bandwidth_t bandwidth)
{
eigrp_bandwidth_t scaled = EIGRP_BANDWIDTH_MAX;
if (bandwidth != EIGRP_BANDWIDTH_MAX) {
scaled = (EIGRP_CLASSIC_SCALER * EIGRP_BANDWIDTH_SCALER);
scaled = scaled / bandwidth;
scaled = scaled ? scaled : EIGRP_BANDWIDTH_MIN;
}
scaled = (scaled < EIGRP_METRIC_MAX) ? scaled : EIGRP_METRIC_MAX;
return (eigrp_scaled_t)scaled;
}
eigrp_bandwidth_t eigrp_scaled_to_bandwidth(eigrp_scaled_t scaled)
{
eigrp_bandwidth_t bandwidth = EIGRP_BANDWIDTH_MAX;
if (scaled != EIGRP_CLASSIC_MAX) {
bandwidth = (EIGRP_CLASSIC_SCALER * EIGRP_BANDWIDTH_SCALER);
bandwidth = scaled * bandwidth;
bandwidth = (bandwidth < EIGRP_METRIC_MAX)
? bandwidth
: EIGRP_BANDWIDTH_MAX;
}
return bandwidth;
}
eigrp_scaled_t eigrp_delay_to_scaled(eigrp_delay_t delay)
{
delay = delay ? delay : EIGRP_DELAY_MIN;
return delay * EIGRP_CLASSIC_SCALER;
}
eigrp_delay_t eigrp_scaled_to_delay(eigrp_scaled_t scaled)
{
scaled = scaled / EIGRP_CLASSIC_SCALER;
scaled = scaled ? scaled : EIGRP_DELAY_MIN;
return scaled;
}
eigrp_metric_t eigrp_calculate_metrics(struct eigrp *eigrp,
struct eigrp_metrics metric)
{
eigrp_metric_t composite = 0;
if (metric.delay == EIGRP_MAX_METRIC)
return EIGRP_METRIC_MAX;
/*
* EIGRP Composite =
* {K1*BW+[(K2*BW)/(256-load)]+(K3*delay)}*{K5/(reliability+K4)}
*/
if (eigrp->k_values[0])
composite += (eigrp->k_values[0] * metric.bandwidth);
if (eigrp->k_values[1])
composite += ((eigrp->k_values[1] * metric.bandwidth)
/ (256 - metric.load));
if (eigrp->k_values[2])
composite += (eigrp->k_values[2] * metric.delay);
if (eigrp->k_values[3] && !eigrp->k_values[4])
composite *= eigrp->k_values[3];
if (!eigrp->k_values[3] && eigrp->k_values[4])
composite *= (eigrp->k_values[4] / metric.reliability);
if (eigrp->k_values[3] && eigrp->k_values[4])
composite *= ((eigrp->k_values[4] / metric.reliability)
+ eigrp->k_values[3]);
composite =
(composite <= EIGRP_METRIC_MAX) ? composite : EIGRP_METRIC_MAX;
return composite;
}
eigrp_metric_t
eigrp_calculate_total_metrics(struct eigrp *eigrp,
struct eigrp_route_descriptor *entry)
{
struct eigrp_interface *ei = entry->ei;
eigrp_delay_t temp_delay;
eigrp_bandwidth_t bw;
entry->total_metric = entry->reported_metric;
temp_delay = entry->total_metric.delay
+ eigrp_delay_to_scaled(ei->params.delay);
entry->total_metric.delay = temp_delay > EIGRP_METRIC_MAX_CLASSIC
? EIGRP_METRIC_MAX_CLASSIC
: temp_delay;
bw = eigrp_bandwidth_to_scaled(ei->params.bandwidth);
entry->total_metric.bandwidth = entry->total_metric.bandwidth > bw
? bw
: entry->total_metric.bandwidth;
return eigrp_calculate_metrics(eigrp, entry->total_metric);
}
bool eigrp_metrics_is_same(struct eigrp_metrics metric1,
struct eigrp_metrics metric2)
{
if ((metric1.bandwidth == metric2.bandwidth)
&& (metric1.delay == metric2.delay)
&& (metric1.hop_count == metric2.hop_count)
&& (metric1.load == metric2.load)
&& (metric1.reliability == metric2.reliability)
&& (metric1.mtu[0] == metric2.mtu[0])
&& (metric1.mtu[1] == metric2.mtu[1])
&& (metric1.mtu[2] == metric2.mtu[2])) {
return true;
}
return false; /* if different */
}

63
eigrpd/eigrp_metric.h Normal file
View File

@ -0,0 +1,63 @@
/*
* EIGRP Metric Math Functions.
* Copyright (C) 2013-2016
* Authors:
* Donnie Savage
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* GNU Zebra 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; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _ZEBRA_EIGRP_METRIC_H_
#define _ZEBRA_EIGRP_METRIC_H_
/* Constants */
#define EIGRP_BANDWIDTH_MIN 0x1ull /* 1 */
#define EIGRP_BANDWIDTH_SCALER 10000000ull /* Inversion value */
#define EIGRP_BANDWIDTH_MAX 0xffffffffffffffffull /* 1.84467441x10^19 */
#define EIGRP_DELAY_MIN 0x1ull /* 1 */
#define EIGRP_DELAY_PICO 1000000ull
#define EIGRP_DELAY_MAX 0xffffffffffffffffull /* 1.84467441x10^19 */
#define EIGRP_MAX_LOAD 256
#define EIGRP_MAX_HOPS 100
#define EIGRP_INACCESSIBLE 0xFFFFFFFFFFFFFFFFull
#define EIGRP_METRIC_MAX 0xffffffffffffffffull /* 1.84467441x10^19 */
#define EIGRP_METRIC_MAX_CLASSIC 0xffffffff
#define EIGRP_METRIC_SCALER 65536 /* CLASSIC to WIDE conversion */
#define EIGRP_CLASSIC_MAX 0xffffffff /* 4294967295 */
#define EIGRP_CLASSIC_SCALER 256 /* IGRP to EIGRP conversion */
/* Prototypes */
extern eigrp_scaled_t eigrp_bandwidth_to_scaled(eigrp_bandwidth_t bw);
extern eigrp_bandwidth_t eigrp_scaled_to_bandwidth(eigrp_scaled_t scale);
extern eigrp_scaled_t eigrp_delay_to_scaled(eigrp_delay_t delay);
extern eigrp_delay_t eigrp_scaled_to_delay(eigrp_scaled_t scale);
extern eigrp_metric_t eigrp_calculate_metrics(struct eigrp *eigrp,
struct eigrp_metrics metric);
extern eigrp_metric_t
eigrp_calculate_total_metrics(struct eigrp *eigrp,
struct eigrp_route_descriptor *rd);
extern bool eigrp_metrics_is_same(struct eigrp_metrics m1,
struct eigrp_metrics m2);
#endif /* _ZEBRA_EIGRP_METRIC_H_ */

70
eigrpd/eigrp_network.c
View File

@ -346,76 +346,6 @@ int eigrp_network_unset(struct eigrp *eigrp, struct prefix *p)
return 1;
}
uint32_t eigrp_calculate_metrics(struct eigrp *eigrp,
struct eigrp_metrics metric)
{
uint64_t temp_metric;
temp_metric = 0;
if (metric.delay == EIGRP_MAX_METRIC)
return EIGRP_MAX_METRIC;
// EIGRP Metric =
// {K1*BW+[(K2*BW)/(256-load)]+(K3*delay)}*{K5/(reliability+K4)}
if (eigrp->k_values[0])
temp_metric += (eigrp->k_values[0] * metric.bandwidth);
if (eigrp->k_values[1])
temp_metric += ((eigrp->k_values[1] * metric.bandwidth)
/ (256 - metric.load));
if (eigrp->k_values[2])
temp_metric += (eigrp->k_values[2] * metric.delay);
if (eigrp->k_values[3] && !eigrp->k_values[4])
temp_metric *= eigrp->k_values[3];
if (!eigrp->k_values[3] && eigrp->k_values[4])
temp_metric *= (eigrp->k_values[4] / metric.reliability);
if (eigrp->k_values[3] && eigrp->k_values[4])
temp_metric *= ((eigrp->k_values[4] / metric.reliability)
+ eigrp->k_values[3]);
if (temp_metric <= EIGRP_MAX_METRIC)
return (uint32_t)temp_metric;
else
return EIGRP_MAX_METRIC;
}
uint32_t eigrp_calculate_total_metrics(struct eigrp *eigrp,
struct eigrp_route_descriptor *entry)
{
struct eigrp_interface *ei = entry->ei;
entry->total_metric = entry->reported_metric;
uint64_t temp_delay =
(uint64_t)entry->total_metric.delay
+ (uint64_t)eigrp_delay_to_scaled(ei->params.delay);
entry->total_metric.delay = temp_delay > EIGRP_MAX_METRIC
? EIGRP_MAX_METRIC
: (uint32_t)temp_delay;
uint32_t bw = eigrp_bandwidth_to_scaled(ei->params.bandwidth);
entry->total_metric.bandwidth = entry->total_metric.bandwidth > bw
? bw
: entry->total_metric.bandwidth;
return eigrp_calculate_metrics(eigrp, entry->total_metric);
}
uint8_t eigrp_metrics_is_same(struct eigrp_metrics metric1,
struct eigrp_metrics metric2)
{
if ((metric1.bandwidth == metric2.bandwidth)
&& (metric1.delay == metric2.delay)
&& (metric1.hop_count == metric2.hop_count)
&& (metric1.load == metric2.load)
&& (metric1.reliability == metric2.reliability)
&& (metric1.mtu[0] == metric2.mtu[0])
&& (metric1.mtu[1] == metric2.mtu[1])
&& (metric1.mtu[2] == metric2.mtu[2]))
return 1;
return 0; // if different
}
void eigrp_external_routes_refresh(struct eigrp *eigrp, int type)
{
}

5
eigrpd/eigrp_network.h
View File

@ -43,11 +43,6 @@ extern int eigrp_if_drop_allspfrouters(struct eigrp *top, struct prefix *p,
unsigned int ifindex);
extern void eigrp_adjust_sndbuflen(struct eigrp *, unsigned int);
extern uint32_t eigrp_calculate_metrics(struct eigrp *, struct eigrp_metrics);
extern uint32_t eigrp_calculate_total_metrics(struct eigrp *,
struct eigrp_route_descriptor *);
extern uint8_t eigrp_metrics_is_same(struct eigrp_metrics,
struct eigrp_metrics);
extern void eigrp_external_routes_refresh(struct eigrp *, int);
#endif /* EIGRP_NETWORK_H_ */

2
eigrpd/eigrp_topology.c
View File

@ -39,6 +39,7 @@
#include "vty.h"
#include "lib_errors.h"
#include "eigrpd/eigrp_types.h"
#include "eigrpd/eigrp_structs.h"
#include "eigrpd/eigrpd.h"
#include "eigrpd/eigrp_interface.h"
@ -51,6 +52,7 @@
#include "eigrpd/eigrp_topology.h"
#include "eigrpd/eigrp_fsm.h"
#include "eigrpd/eigrp_memory.h"
#include "eigrpd/eigrp_metric.h"
static int eigrp_route_descriptor_cmp(struct eigrp_route_descriptor *rd1,
struct eigrp_route_descriptor *rd2);

36
eigrpd/eigrp_types.h Normal file
View File

@ -0,0 +1,36 @@
/*
* EIGRP Definition of Data Types
* Copyright (C) 2018
* Authors:
* Donnie Savage
*
* This file is part of FRR.
*
* FRR is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* FRR 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; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _ZEBRA_EIGRP_TYPES_H_
#define _ZEBRA_EIGRP_TYPES_H_
typedef uint64_t eigrp_bandwidth_t;
typedef uint64_t eigrp_delay_t;
typedef uint64_t eigrp_metric_t;
typedef uint32_t eigrp_scaled_t;
typedef uint32_t eigrp_system_metric_t;
typedef uint32_t eigrp_system_delay_t;
typedef uint32_t eigrp_system_bandwidth_t;
#endif /* _ZEBRA_EIGRP_TYPES_H_ */

2
eigrpd/eigrp_update.c
View File

@ -49,6 +49,7 @@
#include "routemap.h"
#include "vty.h"
#include "eigrpd/eigrp_types.h"
#include "eigrpd/eigrp_structs.h"
#include "eigrpd/eigrpd.h"
#include "eigrpd/eigrp_interface.h"
@ -62,6 +63,7 @@
#include "eigrpd/eigrp_fsm.h"
#include "eigrpd/eigrp_network.h"
#include "eigrpd/eigrp_memory.h"
#include "eigrpd/eigrp_metric.h"
bool eigrp_update_prefix_apply(struct eigrp *eigrp, struct eigrp_interface *ei,
int in, struct prefix *prefix)

2
eigrpd/eigrp_zebra.c
View File

@ -41,6 +41,7 @@
#include "log.h"
#include "nexthop.h"
#include "eigrpd/eigrp_types.h"
#include "eigrpd/eigrp_structs.h"
#include "eigrpd/eigrpd.h"
#include "eigrpd/eigrp_interface.h"
@ -52,6 +53,7 @@
#include "eigrpd/eigrp_network.h"
#include "eigrpd/eigrp_topology.h"
#include "eigrpd/eigrp_fsm.h"
#include "eigrpd/eigrp_metric.h"
static int eigrp_interface_address_add(ZAPI_CALLBACK_ARGS);
static int eigrp_interface_address_delete(ZAPI_CALLBACK_ARGS);

3
eigrpd/subdir.am
View File

@ -25,6 +25,7 @@ eigrpd_libeigrp_a_SOURCES = \
eigrpd/eigrp_hello.c \
eigrpd/eigrp_interface.c \
eigrpd/eigrp_memory.c \
eigrpd/eigrp_metric.c \
eigrpd/eigrp_neighbor.c \
eigrpd/eigrp_network.c \
eigrpd/eigrp_northbound.c \
@ -63,11 +64,13 @@ noinst_HEADERS += \
eigrpd/eigrp_interface.h \
eigrpd/eigrp_macros.h \
eigrpd/eigrp_memory.h \
eigrpd/eigrp_metric.h \
eigrpd/eigrp_neighbor.h \
eigrpd/eigrp_network.h \
eigrpd/eigrp_packet.h \
eigrpd/eigrp_snmp.h \
eigrpd/eigrp_structs.h \
eigrpd/eigrp_types.h \
eigrpd/eigrp_vrf.h \
eigrpd/eigrp_vty.h \
eigrpd/eigrp_yang.h \