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checkFtthFree.pl
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#!/usr/bin/env perl
#
# checkFtthFree
# Copyright (C) 2023-2024 Yann Riou <yaribzh@gmail.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# SPDX-License-Identifier: AGPL-3.0-or-later
#
use warnings;
use strict;
use utf8;
use Encode ();
use List::Util qw'any min sum0';
use Time::HiRes qw'time sleep';
use constant {
DARWIN => $^O eq 'darwin',
LINUX => $^O eq 'linux',
MSWIN32 => $^O eq 'MSWin32',
OPENBSD => $^O eq 'openbsd',
};
require HTTP::Tiny;
require Net::Ping;
{
no warnings 'once';
$Net::Ping::pingstring="PING\n";
}
require POSIX;
require Time::Piece;
my ($SYSCTL_CMD_PATH,$IP_CMD_PATH,$ETHTOOL_CMD_PATH,$ROUTE_CMD_PATH,$IFCONFIG_CMD_PATH,$NETSTAT_CMD_PATH);
if(! MSWIN32) {
$SYSCTL_CMD_PATH=findCmd('sysctl');
if(LINUX) {
($IP_CMD_PATH,$ETHTOOL_CMD_PATH)=(map {findCmd($_)} (qw'ip ethtool'));
}else{
($ROUTE_CMD_PATH,$IFCONFIG_CMD_PATH,$NETSTAT_CMD_PATH)=(map {findCmd($_)} (qw'route ifconfig netstat'))
}
}
sub findCmd {
my $cmd=shift;
foreach my $knownPath (map {$_.'/'.$cmd} (qw'/sbin /usr/sbin /bin /usr/bin')) {
return $knownPath if(-f $knownPath && -r _ && -x _);
}
require IPC::Cmd;
return IPC::Cmd::can_run($cmd);
}
my $VERSION='0.25';
my $PROGRAM_NAME='checkFtthFree';
my $IPV6_COMPAT=eval { require IO::Socket::IP; IO::Socket::IP->VERSION(0.25) };
my %TEST_DATA = ( 'local' => { IPv4 => ['212.27.38.253',8095,'/fixed/10G',2,10] },
Internet => { IPv4 => { download => { 12876 => { BBR => ['ipv4.scaleway.testdebit.info',80,'/10G.iso',10,30],
CUBIC => ['ping.online.net',80,'/10000Mo.dat',10,30] },
5410 => { BBR => ['ipv4.paris.testdebit.info',80,'/10G.iso',10,30],
CUBIC => ['ipv4.bouygues.testdebit.info',80,'/10G.iso',10,30] } },
upload => { 12876 => ['ipv4.scaleway.testdebit.info',80,'',10,30],
5410 => ['ipv4.paris.testdebit.info',80,'',10,30] } },
IPv6 => { download => { 12876 => { BBR => ['ipv6.scaleway.testdebit.info',80,'/10G.iso',10,30],
CUBIC => ['ping6.online.net',80,'/10000Mo.dat',10,30] },
5410 => { BBR => ['ipv6.paris.testdebit.info',80,'/10G.iso',10,30],
CUBIC => ['ipv6.bouygues.testdebit.info',80,'/10G.iso',10,30] } },
upload => { 12876 => ['ipv6.scaleway.testdebit.info',80,'',10,30],
5410 => ['ipv6.paris.testdebit.info',80,'',10,30] } },
} );
my %AS_NAMES = ( 5410 => 'Bouygues Telecom',
6799 => 'OTE',
12322 => 'Free',
12876 => 'Scaleway',
16276 => 'OVHcloud',
21409 => 'Ikoula',
24904 => 'Kwaoo K-Net',
53589 => 'PlanetHoster',
197133 => 'Mediactive Network',
200780 => 'Appliwave' );
my $MTU=1500;
my $MSS=$MTU-40;
my $TCP_EFFICIENCY=$MSS/($MTU+38);
my $GOODPUT_1Gbps_Bytes=1_000_000_000*$TCP_EFFICIENCY/8;
my $GOODPUT_700Mbps_Bytes=700_000_000*$TCP_EFFICIENCY/8;
my $RECOMMENDED_MIN_RTT_MAX_FOR_FULL_BANDWIDTH=15;
my $RECOMMENDED_MIN_RCV_WINDOW_SIZE=$GOODPUT_1Gbps_Bytes*$RECOMMENDED_MIN_RTT_MAX_FOR_FULL_BANDWIDTH/1000;
my $RECOMMENDED_MIN_SND_WINDOW_SIZE=$GOODPUT_700Mbps_Bytes*$RECOMMENDED_MIN_RTT_MAX_FOR_FULL_BANDWIDTH/1000;
my $TCP_WMEM_SND_WINDOW_RATIO=7/10;
my %cmdOpts=('check-update' => ['Effectue seulement la vérification de disponibilité de nouvelle version','c'],
'skip-check-update' => ['Désactive la vérification de disponibilité de nouvelle version','C'],
'skip-intro' => ["Désactive le message d'introduction et démarre immédiatement les tests",'I'],
'net-conf' => ['Effectue seulement la lecture de la configuration réseau','n'],
'skip-net-conf' => ['Désactive la lecture de la configuration réseau (empêche la détection de certains problèmes)','N'],
suggestions => ['Affiche des suggestions pour résoudre des problèmes de configuration réseau ou compléter les tests si besoin','s'],
freebox => ['Effectue seulement les tests locaux à partir de la Freebox (pas de test Internet)','f'],
'skip-freebox' => ['Désactive les tests locaux à partir de la Freebox (tests Internet uniquement, empêche la détection de certains problèmes)','F'],
latency => ['Effectue seulement les tests de latence (pas de test de débit)','l'],
'skip-latency' => ['Désactive les tests de latence (tests de débit uniquement, empêche la détection de certains problèmes)','L'],
upload => ['Effectue un test de débit montant au lieu de descendant (EXPERIMENTAL)','u'],
'binary-units' => ["Utilise les préfixes binaires pour le système d'unités de débit",'b'],
'extended-test' => ['Effectue des tests plus longs (multiplie par 2 la durée max des tests)','e'],
'quiet' => ["Mode silencieux: désactive les messages d'analyse et d'avertissement",'q'],
help => ["Affiche l'aide",'h'],
version => ['Affiche la version','v'],
ipv6 => ['Effectue les tests Internet en IPv6 (IPv4 par défaut)','6']);
my %cmdOptsAliases = map {$cmdOpts{$_}[1] => $_} (keys %cmdOpts);
my $httpClient=HTTP::Tiny->new(proxy => undef, http_proxy => undef, https_proxy => undef);
my ($WIN32_ACP_NB,$WIN32_OUTPUTCP);
if(MSWIN32) {
require Win32;
($WIN32_ACP_NB,$WIN32_OUTPUTCP)=(Win32::GetACP(),'cp'.Win32::GetConsoleOutputCP());
eval "use open ':std', OUT => ':encoding($WIN32_OUTPUTCP)'";
if($@) {
quit("Impossible de configurer l'encodage de la console Windows:\n$@");
}
}else{
eval "use open ':std', ':encoding(utf8)'";
}
sub win32PowershellExec {
my $psCmd="powershell.exe \"$_[0]\" 2>NUL";
my $previousCP=Win32::GetConsoleCP();
Win32::SetConsoleCP($WIN32_ACP_NB); # Prevent powershell.exe from replacing current font when UTF-8 is used...
my @res = map {Encode::decode($WIN32_OUTPUTCP,$_)} (wantarray() ? `$psCmd` : scalar(`$psCmd`));
Win32::SetConsoleCP($previousCP);
return @res;
};
my %options;
foreach my $arg (@ARGV) {
if(substr($arg,0,2) eq '--') {
my $cmdOpt=substr($arg,2);
if(exists $cmdOpts{$cmdOpt}) {
$options{$cmdOpt}++;
}else{
print "Option invalide \"$cmdOpt\"\n";
usage();
}
}elsif(substr($arg,0,1) eq '-') {
my $cmdOptsString=substr($arg,1);
my @cmdOptsList=split(//,$cmdOptsString);
foreach my $cmdOpt (@cmdOptsList) {
if(exists $cmdOptsAliases{$cmdOpt}) {
$options{$cmdOptsAliases{$cmdOpt}}++;
}else{
print "Option invalide \"$cmdOpt\"\n";
usage();
}
}
}else{
print "Paramètre invalide \"$arg\"\n";
usage();
}
}
my $maxTransferDuration=8;
my $maxNbPings=10*2**($options{'extended-test'}//0);
$maxTransferDuration=15*2**($options{'extended-test'}-1) if($options{'extended-test'});
usage() if(any {$options{$_->[0]} && $options{$_->[1]}} (['check-update','skip-check-update'],
['freebox','skip-freebox'],
['freebox','upload'],
['freebox','alternate-srv'],
['freebox','all-srv'],
['alternate-srv','all-srv'],
['latency','skip-latency'],
['latency','upload'],
['net-conf','quiet'],
['suggestions','quiet']));
quit("Le support d'IPv6 nécessite le module Perl IO::Socket::IP v0.25 ou supérieur") if($options{ipv6} && ! $IPV6_COMPAT);
sub usage {
print "\nUsage:\n $0 [<options>]\n";
foreach my $cmdOpt (sort {my $cic=lc($cmdOpts{$a}[1]) cmp lc($cmdOpts{$b}[1]); $cic ? $cic : $cmdOpts{$b}[1] cmp $cmdOpts{$a}[1]} keys %cmdOpts) {
print " --$cmdOpt (-$cmdOpts{$cmdOpt}[1]) : $cmdOpts{$cmdOpt}[0]\n";
}
quit();
}
my $timestampPrinted;
sub quit {
my $msg=shift;
print "$msg\n" if(defined $msg);
if($timestampPrinted) {
printTimestampLine();
}else{
print "\n";
}
if(MSWIN32) {
print "Appuyer sur Entrée pour quitter...\n";
<STDIN>;
}
exit;
}
sub printTimestampLine {
my $timestamp=time();
my @localtime=localtime($timestamp);
$localtime[4]++;
@localtime = map {sprintf('%02d',$_)} @localtime;
my $timeString=($localtime[5]+1900)
.'-'.$localtime[4]
.'-'.$localtime[3]
.' '.$localtime[2]
.':'.$localtime[1]
.':'.$localtime[0]
.' '.getTzOffset($timestamp);
my $timestampPadding='-' x (int(77-length($timeString))/2);
print "$timestampPadding $timeString $timestampPadding\n";
$timestampPrinted=1;
}
sub getTzOffset {
my $t=defined $_[0] ? $_[0] : time();
my ($lMin,$lHour,$lYear,$lYday)=(localtime($t))[1,2,5,7];
my ($gMin,$gHour,$gYear,$gYday)=(gmtime($t))[1,2,5,7];
my $deltaMin=($lMin-$gMin)+($lHour-$gHour)*60+( $lYear-$gYear || $lYday - $gYday)*24*60;
my $sign=$deltaMin>=0?'+':'-';
$deltaMin=abs($deltaMin);
my ($deltaHour,$deltaHourMin)=(int($deltaMin/60),$deltaMin%60);
return $sign.sprintf('%.2u%.2u',$deltaHour,$deltaHourMin);
}
sub checkForNewVersion {
return unless($VERSION =~ /^(\d+)\.(\d+)$/);
my ($currentVersionMajor,$currentVersionMinor)=($1,$2);
$httpClient->{timeout}=10;
my $result=$httpClient->get('http://checkversion.royalwebhosting.net/'.lc($PROGRAM_NAME));
if($result->{success}) {
my $newVersion=$result->{content};
if($newVersion =~ /^(\d+)\.(\d+)$/) {
my ($latestVersionMajor,$latestVersionMinor)=($1,$2);
$newVersion="$latestVersionMajor.$latestVersionMinor";
if($latestVersionMajor > $currentVersionMajor
|| ($latestVersionMajor == $currentVersionMajor && $latestVersionMinor > $currentVersionMinor)) {
print +('-' x 79)."\n";
print "Une nouvelle version de $PROGRAM_NAME est disponible ($newVersion)\n";
print "Vous utilisez actuellement la version $VERSION\n";
print "Vous pouvez télécharger la dernière version à partir du lien ci-dessous:\n";
print " https://github.com/Yaribz/$PROGRAM_NAME/releases/latest/download/$PROGRAM_NAME.".($0 =~ /\.exe$/i ? 'exe' : 'pl')."\n";
print "Vous pouvez désactiver la vérification de version avec le paramètre --skip-check-update (-C)\n";
print +('-' x 79)."\n";
print "Appuyer sur Ctrl-c pour quitter, ou Entrée pour continuer avec votre version actuelle.\n";
exit unless(defined <STDIN>);
}
}else{
print "[!] Impossible de vérifier si une nouvelle version est disponible (valeur de nouvelle version invalide \"$newVersion\")\n";
}
}else{
my $errorDetail = $result->{status} == 599 ? $result->{content} : "HTTP status: $result->{status}, reason: $result->{reason}";
$errorDetail=~s/\x{0092}/'/g if(MSWIN32);
chomp($errorDetail);
print "[!] Impossible de vérifier si une nouvelle version est disponible ($errorDetail)\n";
}
}
sub printIntroMsg {
print <<EOT;
===============================================================================
$PROGRAM_NAME
---------------
Programme de diagnostic de connexion FTTH Free
Ce programme analyse la configuration réseau du système et effectue différents
tests TCP (latence et débit mono-connexion) afin d'évaluer les performances de
la connexion FTTH et détecter d'éventuels dysfonctionnements.
Diverses options sont disponibles pour configurer ou désactiver certains tests,
voir --help (-h) pour plus d'information.
Avant de continuer, veuillez vérifier que rien d'autre ne consomme de la bande
passante sur le réseau (ordinateurs, Freebox player, télévision...), ni du CPU
sur le système de test (mises à jour automatiques, antivirus...).
===============================================================================
Appuyer sur Entrée pour continuer (ou Ctrl-C pour annuler)...
EOT
exit unless(defined <STDIN>);
}
sub printHeaderLine {
my $osName=getOsName()//$^O;
my $cbofTag="[$PROGRAM_NAME v$VERSION]";
my $osNamePaddingLength=79-length($cbofTag)-length($osName);
$osNamePaddingLength=1 if($osNamePaddingLength < 1);
print $cbofTag.(' ' x $osNamePaddingLength).$osName."\n";
}
sub getOsName {
my $n;
if(MSWIN32) {
$n=Win32::GetOSDisplayName();
substr($n,9,1)='1' if(substr($n,0,10) eq 'Windows 10' && (Win32::GetOSVersion())[3] >= 22000);
}else{
my @uname=POSIX::uname();
my ($sysName,$sysRelease,$sysArch)=@uname[0,2,4];
if($sysName) {
$n=$sysName;
$n.=" $sysRelease" if($sysRelease);
$n.=" ($sysArch)" if($sysArch);
}
}
return $n;
}
my %netConf;
my %WIN32_TCP_SETTINGS = map {$_ => 1} (qw'AutoTuningLevelEffective AutoTuningLevelGroupPolicy AutoTuningLevelLocal CongestionProvider EcnCapability ScalingHeuristics Timestamps');
my %netAdapterErrors;
sub getNetConf {
if(MSWIN32) {
my $TCP_PROPERTIES=join(', ',keys %WIN32_TCP_SETTINGS);
my $NET_ADAPTER_ADVANCED_PROPERTIES=join(', ',(qw'EEE FlowControl InterruptModeration IPChecksumOffloadIPv4 JumboPacket LsoV1IPv4 LsoV2IPv4 LsoV2IPv6 LSOv2IPv4 LSOv2IPv6 PacketCoalescing ReceiveBuffers RscIPv4 RscIPv6 SpeedDuplex TCPChecksumOffloadIPv4 TCPChecksumOffloadIPv6 TCPConnectionOffloadIPv4 TCPConnectionOffloadIPv6 TCPUDPChecksumOffloadIPv4 TCPUDPChecksumOffloadIPv6 TransmitBuffers'));
my $defaultIp = $options{ipv6} ? '::0' : '0.0.0.0';
my $powershellScript = (<<"END_OF_POWERSHELL_SCRIPT" =~ s/\n//gr);
\$ErrorActionPreference='silentlycontinue';
Get-NetTCPSetting Internet | Format-List -Property $TCP_PROPERTIES;
\$defaultInterfaceName=(Find-NetRoute -RemoteIpAddress $defaultIp)[0].InterfaceAlias;
if(\$defaultInterfaceName -ne \$null) {
Get-NetAdapter -Name \$defaultInterfaceName | Format-List -Property LinkSpeed, PhysicalMediaType, DriverDescription, DriverProvider, DriverVersionString, DriverDate;
\$advancedProperties = New-Object PSObject;
Get-NetAdapterAdvancedProperty -Name \$defaultInterfaceName | Where-Object -Property RegistryKeyword -Match '^\\*' | ForEach-Object { \$advancedProperties | Add-Member -MemberType NoteProperty -Name (\$_.RegistryKeyword).substring(1) -Value \$_.DisplayValue };
\$advancedProperties | Format-List -Property $NET_ADAPTER_ADVANCED_PROPERTIES;
Get-NetAdapterHardwareInfo -Name \$defaultInterfaceName | Format-List -Property PcieLinkSpeed, PcieLinkWidth;
Get-NetConnectionProfile -InterfaceAlias \$defaultInterfaceName | Format-List -Property NetworkCategory;
Get-NetAdapterStatistics -Name \$defaultInterfaceName | Format-List -Property OutboundDiscardedPackets, OutboundPacketErrors, ReceivedDiscardedPackets, ReceivedPacketErrors;
}
END_OF_POWERSHELL_SCRIPT
my @netConfLines = win32PowershellExec($powershellScript);
map {$netConf{$1}=$2 if(/^\s*([^:]*[^\s:])\s*:\s*(.*[^\s])\s*$/)} @netConfLines;
foreach my $netAdapterCounter (qw'OutboundDiscardedPackets OutboundPacketErrors ReceivedDiscardedPackets ReceivedPacketErrors') {
$netAdapterErrors{$netAdapterCounter} = delete $netConf{$netAdapterCounter} if(exists $netConf{$netAdapterCounter});
}
if(defined $netConf{AutoTuningLevelEffective}) {
if($netConf{AutoTuningLevelEffective} eq 'Local') {
delete $netConf{AutoTuningLevelGroupPolicy};
delete $netConf{AutoTuningLevelEffective};
}elsif($netConf{AutoTuningLevelEffective} eq 'GroupPolicy') {
delete $netConf{AutoTuningLevelLocal};
delete $netConf{AutoTuningLevelEffective};
}
}
$netConf{Driver} = delete $netConf{DriverDescription}
if(exists $netConf{DriverDescription});
if(exists $netConf{DriverVersionString}) {
$netConf{DriverVersion}=delete $netConf{DriverVersionString};
my @driverVersionDetails;
map {push(@driverVersionDetails,delete $netConf{$_}) if(exists $netConf{$_})} (qw'DriverProvider DriverDate');
$netConf{DriverVersion}.=' ('.join(', ',@driverVersionDetails).')' if(@driverVersionDetails);
}
$netConf{JumboPacket}='Disabled'
if(exists $netConf{JumboPacket} && $netConf{JumboPacket} eq '1514');
my @ipVersionedParams;
map {push(@ipVersionedParams,$1) if(/^(.+)IPv4$/)} (keys %netConf);
foreach my $ipVersionedParam (@ipVersionedParams) {
my ($ipv4Param,$ipv6Param) = map {$ipVersionedParam.$_} (qw'IPv4 IPv6');
if(exists $netConf{$ipv6Param} && $netConf{$ipv4Param} eq $netConf{$ipv6Param}) {
$netConf{$ipVersionedParam} = delete $netConf{$ipv4Param};
delete $netConf{$ipv6Param};
}
}
}elsif(defined $SYSCTL_CMD_PATH) {
my @netConfFields;
if(LINUX) {
if(defined $IP_CMD_PATH) {
my @cmdOutputLines = $options{ipv6} ? `$IP_CMD_PATH -6 route show default 2>/dev/null` : `$IP_CMD_PATH -4 route show default 2>/dev/null`;
my $device;
foreach my $line (@cmdOutputLines) {
if($line =~ /\sdev\s+([^\s\/]{1,15})\s/) {
$device=$1;
last;
}
}
if(defined $device) {
my %devices=(intf => $device);
my $activeDevice=getFileFirstLine("/sys/class/net/$device/bonding/active_slave");
%devices = (intf => $activeDevice, bonding => $device ) if(defined $activeDevice);
$netConf{$_.'.dev'}=$devices{$_} foreach(keys %devices);
my %INTF_SETTINGS = map {$_ => 1} (qw'mtu qdisc qlen');
foreach my $devType (keys %devices) {
my $dev=$devices{$devType};
@cmdOutputLines=`$IP_CMD_PATH link show $dev 2>/dev/null`;
foreach my $line (@cmdOutputLines) {
next unless($line =~ /\s(mtu\s.*)$/);
my @linkSettings=split(/\s+/,$1);
last if(@linkSettings % 2);
for my $i (0..$#linkSettings/2) {
my ($linkSettingName,$linkSettingValue)=($linkSettings[$i*2],$linkSettings[$i*2+1]);
next unless($INTF_SETTINGS{$linkSettingName});
$netConf{"$devType.$linkSettingName"}=$linkSettingValue;
}
last;
}
}
if(defined $ETHTOOL_CMD_PATH) {
{ # General info
@cmdOutputLines=`$ETHTOOL_CMD_PATH $devices{intf} 2>/dev/null`;
my %ETHTOOL_PARAM_MAPPING=(
speed => 'speed',
duplex => 'duplex',
'auto-negotiation' => 'autoneg',
port => 'port',
);
foreach my $line (@cmdOutputLines) {
next unless($line =~ /^\s*([^:]*[^:\s])\s*:\s*(.*[^\s])\s*$/);
my ($lcParam,$val)=(lc($1),$2);
next unless(exists $ETHTOOL_PARAM_MAPPING{$lcParam});
$netConf{'link.'.$ETHTOOL_PARAM_MAPPING{$lcParam}}=$val;
}
}
{ # Driver
@cmdOutputLines=`$ETHTOOL_CMD_PATH -i $devices{intf} 2>/dev/null`;
my %driverInfo;
foreach my $line (@cmdOutputLines) {
$driverInfo{lc($1)}=$2 if($line =~ /^\s*([^:]*[^\s:])\s*:\s*(.*[^\s])\s*$/);
}
if(exists $driverInfo{driver}) {
$netConf{'intf.driver'}=$driverInfo{driver};
$netConf{'intf.driver'}.=" $driverInfo{version}" if(exists $driverInfo{version});
}
$netConf{'intf.firmware-version'}=$driverInfo{'firmware-version'} if(exists $driverInfo{'firmware-version'});
}
{ # Coalescing
@cmdOutputLines=`$ETHTOOL_CMD_PATH -c $devices{intf} 2>/dev/null`;
my ($adaptiveRx,$rxUsecs,$rxFrames,$adaptiveTx,$txUsecs,$txFrames);
foreach my $line (@cmdOutputLines) {
if($line =~ /^\s*adaptive[\- ]rx\s*:\s*([^\s]+)(?:\s+tx\s*:\s*([^\s]+))?\s*$/i) {
$adaptiveRx=$1;
$adaptiveTx=$2 if(defined $2);
}elsif($line =~ /^\s*adaptive[\- ]tx\s*:\s*([^\s]+)(?:\s+rx\s*:\s*([^\s]+))?\s*$/i) {
$adaptiveTx=$1;
$adaptiveRx=$2 if(defined $2);
}elsif($line =~ /^\s*rx[\- ]usecs\s*:\s*(\d+)\s*$/i) {
$rxUsecs=$1;
}elsif($line =~ /^\s*tx[\- ]usecs\s*:\s*(\d+)\s*$/i) {
$txUsecs=$1;
}elsif($line =~ /^\s*rx[\- ]frames\s*:\s*(\d+)\s*$/i) {
$rxFrames=$1;
}elsif($line =~ /^\s*tx[\- ]frames\s*:\s*(\d+)\s*$/i) {
$txFrames=$1;
}
}
if(defined $adaptiveRx && lc($adaptiveRx) eq 'on') {
$netConf{'intf.coalesce-rx'}='adaptive';
}else{
my @rxVals;
if(defined $adaptiveRx) {
my $lcAdaptiveRx=lc($adaptiveRx);
push(@rxVals,'adaptive='.$lcAdaptiveRx)
unless(any {$lcAdaptiveRx eq $_} (qw'off n/a'));
}
push(@rxVals,$rxUsecs.' usecs') if(defined $rxUsecs);
push(@rxVals,$rxFrames.' frames') if(defined $rxFrames);
$netConf{'intf.coalesce-rx'}=join(' / ',@rxVals) if(@rxVals);
}
if(defined $adaptiveTx && lc($adaptiveTx) eq 'on') {
$netConf{'intf.coalesce-tx'}='adaptive';
}else{
my @txVals;
if(defined $adaptiveTx) {
my $lcAdaptiveTx=lc($adaptiveTx);
push(@txVals,'adaptive='.$lcAdaptiveTx)
unless(any {$lcAdaptiveTx eq $_} (qw'off n/a'));
}
push(@txVals,$txUsecs.' usecs') if(defined $txUsecs);
push(@txVals,$txFrames.' frames') if(defined $txFrames);
$netConf{'intf.coalesce-tx'}=join(' / ',@txVals) if(@txVals);
}
}
{ # Ring buffer
@cmdOutputLines=`$ETHTOOL_CMD_PATH -g $devices{intf} 2>/dev/null`;
my ($currentSection,%ringValues);
foreach my $line (@cmdOutputLines) {
if($line =~ /\smaximums\s*:\s*$/i) {
$currentSection='max';
}elsif($line =~ /^current\s.*:\s*$/i) {
$currentSection='current';
}elsif(defined $currentSection && $line =~ /^\s*([rt]x)\s*:\s*([^\s]+)\s*$/i) {
$ringValues{uc($1)}{$currentSection}=$2;
}
}
if(exists $ringValues{RX} && exists $ringValues{RX}{current}) {
$netConf{'intf.ring-rx'}=$ringValues{RX}{current};
$netConf{'intf.ring-rx'}.=" (max: $ringValues{RX}{max})" if(exists $ringValues{RX}{max});
}
if(exists $ringValues{TX} && exists $ringValues{TX}{current}) {
$netConf{'intf.ring-tx'}=$ringValues{TX}{current};
$netConf{'intf.ring-tx'}.=" (max: $ringValues{TX}{max})" if(exists $ringValues{TX}{max});
}
}
{ # Offloading and features
@cmdOutputLines=`$ETHTOOL_CMD_PATH -k $devices{intf} 2>/dev/null`;
my %ETHTOOL_PARAM_MAPPING=(
'rx-checksumming' => 'cksum_rx',
'tx-checksumming' => 'cksum_tx',
'tcp-segmentation-offload' => 'tso',
'generic-segmentation-offload' => 'gso',
'generic-receive-offload' => 'gro',
'large-receive-offload' => 'lro',
);
my @offloaded;
foreach my $line (@cmdOutputLines) {
next unless($line =~ /^\s*([^:]*[^\s:])\s*:\s*([^\[]*[^\s\[])(?:\s+\[[^\]]*\])?\s*$/);
my $lcParam=lc($1);
if($lcParam eq 'scatter-gather') {
$netConf{'intf.dma-sg'}=$2;
}elsif(exists $ETHTOOL_PARAM_MAPPING{$lcParam}) {
my ($lcVal,$mappedVal)=(lc($2),$ETHTOOL_PARAM_MAPPING{$lcParam});
if($lcVal eq 'on') {
push(@offloaded,'+'.$mappedVal);
}elsif(any {$lcVal eq $_} (qw'off n/a')) {
push(@offloaded,'-'.$mappedVal);
}else{
push(@offloaded,$mappedVal.'='.$2);
}
}
}
$netConf{'intf.offload'}=join(' | ',@offloaded) if(@offloaded);
}
}
foreach my $linkParam (qw'duplex speed') {
my $fullParam='link.'.$linkParam;
next if(defined $netConf{$fullParam});
my $val=getFileFirstLine("/sys/class/net/$devices{intf}/$linkParam");
$netConf{$fullParam}=$val if(defined $val);
}
my %SYSCLASS_PARAM_MAPPING=(mtu => 'mtu', tx_queue_len => 'qlen');
foreach my $intfParam (keys %SYSCLASS_PARAM_MAPPING) {
my $fullParam='intf.'.$SYSCLASS_PARAM_MAPPING{$intfParam};
next if(defined $netConf{$fullParam});
my $val=getFileFirstLine("/sys/class/net/$devices{intf}/$intfParam");
$netConf{$fullParam}=$val if(defined $val);
}
my %SYSCLASS_DEVICE_PARAM_MAPPING=(current_link_speed => 'link_speed', current_link_width => 'link_width');
foreach my $intfParam (keys %SYSCLASS_DEVICE_PARAM_MAPPING) {
my $val=getFileFirstLine("/sys/class/net/$devices{intf}/device/$intfParam");
$netConf{'dev.'.$SYSCLASS_DEVICE_PARAM_MAPPING{$intfParam}}=$val if(defined $val);
}
}
}
my $r_netErrors=linuxGetNetErrorCounters($netConf{'intf.dev'});
%netAdapterErrors=%{$r_netErrors};
@netConfFields=qw'
net.core.default_qdisc
net.core.netdev_budget
net.core.netdev_budget_usecs
net.core.netdev_max_backlog
net.core.rmem_max
net.core.wmem_max
net.ipv4.tcp_adv_win_scale
net.ipv4.tcp_congestion_control
net.ipv4.tcp_dsack
net.ipv4.tcp_ecn
net.ipv4.tcp_mem
net.ipv4.tcp_no_metrics_save
net.ipv4.tcp_rmem
net.ipv4.tcp_sack
net.ipv4.tcp_timestamps
net.ipv4.tcp_window_scaling
net.ipv4.tcp_wmem';
}else{
if(defined $ROUTE_CMD_PATH) {
my @cmdOutputLines = $options{ipv6} ? `$ROUTE_CMD_PATH -n get -inet6 default` : `$ROUTE_CMD_PATH -n get default`;
my $device;
foreach my $line (@cmdOutputLines) {
if($line =~ /^\s*interface\s*:\s*([^\s\/]{1,15})\s*$/) {
$device=$1;
last;
}
}
if(defined $device) {
$netConf{'intf.dev'}=$device;
if(defined $IFCONFIG_CMD_PATH) {
my $ifConfigFlag = DARWIN ? '-v ' : '';
my @ifconfigCmdRes = `$IFCONFIG_CMD_PATH $ifConfigFlag$device`;
my %IFCONFIG_PARAM_MAPPING=(media => 'link.media', type => 'link.type', scheduler => 'intf.qdisc', 'link rate' => 'link.speed');
my (@enabledOpts,%enabledOptsDedup);
foreach my $line (@ifconfigCmdRes) {
if(! exists $netConf{'intf.mtu'} && $line =~ /\smtu\s(\d+)/) {
$netConf{'intf.mtu'}=$1;
}elsif($line =~ /^\s*(?:options|enabled|ec_enabled)\s*=\s*[\da-fA-F]+\s*<([^>]+)>\s*/) {
foreach my $opt (split(/,/,$1)) {
next if(lc(substr($opt,0,5)) eq 'vlan_' || exists $enabledOptsDedup{$opt});
$enabledOptsDedup{$opt}=1;
push(@enabledOpts,$opt);
}
}elsif($line =~ /^\s*([\w ]*[^\s])\s*:\s*(.*[^\s])\s*$/ && exists $IFCONFIG_PARAM_MAPPING{$1}) {
$netConf{$IFCONFIG_PARAM_MAPPING{$1}}=$2;
}
}
$netConf{'intf.options'}=join(',',@enabledOpts) if(@enabledOpts);
}
my $r_intfErrors=bsdGetIntfErrorCounters($device);
%netAdapterErrors=%{$r_intfErrors};
}
}
@netConfFields=qw'
kern.ipc.maxsockbuf
net.inet.ip.ifq.maxlen
net.inet.ip.intr_queue_maxlen
net.inet.ip.maxqueue
net.inet.tcp.sendspace
net.inet.tcp.recvspace
net.inet.tcp.sendbuf_auto
net.inet.tcp.doautosndbuf
net.inet.tcp.sendbuf_max
net.inet.tcp.autosndbufmax
net.inet.tcp.sendbuf_inc
net.inet.tcp.sendbuf_auto_lowat
net.inet.tcp.recvbuf_auto
net.inet.tcp.doautorcvbuf
net.inet.tcp.recvbuf_max
net.inet.tcp.autorcvbufmax
net.inet.tcp.recvbuf_inc
net.inet.tcp.reass.maxqueuelen
net.inet.tcp.sack.enable
net.inet.tcp.ecn.enable
net.inet.tcp.hostcache.enable
net.inet.tcp.rfc1323
net.inet.tcp.rfc3042
net.inet.tcp.functions_available
net.inet.tcp.functions_default
net.inet.tcp.cc.available
net.inet.tcp.cc.algorithm
net.inet.tcp.timestamps
net.inet.tcp.congctl.available
net.inet.tcp.congctl.selected
net.inet.tcp.reasslimit
net.inet.tcp.sack
net.inet.tcp.ecn
net.inet.tcp.ecn_initiate_out
net.inet.tcp.ecn_negotiate_in
net.inet6.ip6.ifq.maxlen
net.inet6.ip6.intr_queue_maxlen
net.link.generic.system.rcvq_maxlen
net.link.generic.system.sndq_maxlen
net.link.ifqmaxlen';
}
my @netConfLines=`$SYSCTL_CMD_PATH -a 2>/dev/null`;
foreach my $line (@netConfLines) {
if($line =~ /^\s*([^:=]*[^\s:=])\s*[:=]\s*(.*[^\s])\s*$/ && (any {$1 eq $_} @netConfFields)) {
$netConf{$1}=$2;
}
}
}
}
sub getFileFirstLine {
my $filePath=shift;
my $fileHdl;
return unless(-f $filePath && -r _ && open($fileHdl,'<',$filePath));
my $content=<$fileHdl>;
close($fileHdl);
return unless(defined $content);
chomp($content);
return if($content eq '');
return $content;
}
sub linuxGetNetErrorCounters {
my $dev=shift;
my %errorCounters;
if(defined $dev) {
my $devStatDir="/sys/class/net/$dev/statistics";
if(-d $devStatDir && -r _ && opendir(my $statDh,$devStatDir)) {
my @errorCounterNames = grep {(/_errors$/ || /_dropped$/ || $_ eq 'collisions') && -f "$devStatDir/$_" && -r _} readdir($statDh);
closedir($statDh);
foreach my $errorCounter (@errorCounterNames) {
my $counterFh;
next unless(open($counterFh,'<',"$devStatDir/$errorCounter"));
my $counterValue=<$counterFh>;
close($counterFh);
next unless(defined $counterValue && $counterValue =~ /^(\d+)/);
$errorCounters{$errorCounter}=$1;
}
}
}
my $softnetStatFile='/proc/net/softnet_stat';
if(-f $softnetStatFile && -r _ && open(my $softnetStatFh,'<',$softnetStatFile)) {
while(my $statLine=<$softnetStatFh>) {
next unless($statLine =~ /^[\da-fA-F]+\s+([\da-fA-F]+)\s+([\da-fA-F]+)/);
$errorCounters{rx_softnet_dropped}+=hex('0x'.$1);
$errorCounters{rx_softnet_squeezed}+=hex('0x'.$2);
}
close($softnetStatFh);
}
return \%errorCounters;
}
sub bsdGetIntfErrorCounters {
return {} unless(defined $NETSTAT_CMD_PATH);
my $dev=shift;
my $r_linkCounters=bsdGetLinkCounters($dev);
if(OPENBSD) {
my $r_linkErrorCounters=bsdGetLinkCounters($dev,'e');
$r_linkCounters->{$_}//=$r_linkErrorCounters->{$_} foreach(keys %{$r_linkErrorCounters});
}
my %errorCounters;
foreach my $counter (keys %{$r_linkCounters}) {
next unless($counter =~ /^colls?$/i
|| $counter =~ /^[io]?drops?$/i
|| $counter =~ /^[io]errs$/i);
next unless($r_linkCounters->{$counter} =~ /^\d+$/);
$errorCounters{$counter}=$r_linkCounters->{$counter};
}
return \%errorCounters;
}
sub bsdGetLinkCounters {
my ($dev,$flag)=@_;
$flag//='d';
my @cmdOutputLines=`$NETSTAT_CMD_PATH -${flag}nI $dev 2>/dev/null`;
my @fieldNames;
foreach my $line (@cmdOutputLines) {
chomp($line);
next if($line =~ /^\s*$/);
if(@fieldNames) {
my @vals=split(/\s+/,$line);
my %data;
$data{$fieldNames[$_]}=$vals[$_] for(0..$#fieldNames);
next unless(exists $data{Network} && substr(lc($data{Network}),0,5) eq '<link');
return \%data;
}else{
@fieldNames=split(/\s+/,$line);
}
}
return {};
}
my ($rcvWindow,$rmemMaxParam,$rmemMaxValuePrefix,$tcpAdvWinScale,$sndWindow,$wmemMaxParam,$wmemMaxValuePrefix,$degradedTcpConf);
sub netConfAnalysis {
if(! %netConf) {
print "[!] Echec de lecture de la configuration réseau du système\n";
return;
}
print "Configuration réseau du système:\n";
if(MSWIN32) {
my %prefixedConf;
foreach my $param (keys %netConf) {
my $prefix;
if($param eq 'NetworkCategory') {
$prefix='NetProfile';
}elsif(exists $WIN32_TCP_SETTINGS{$param}) {
$prefix='Tcp';
}else{
$prefix='Adapter';
}
$prefixedConf{$prefix.'.'.$param}=$netConf{$param};
}
map {print " $_: $prefixedConf{$_}\n"} (sort keys %prefixedConf);
if(defined $netConf{AutoTuningLevelLocal}) {
processWindowsAutoTuningLevel('AutoTuningLevelLocal');
if($netConf{AutoTuningLevelLocal} ne 'Normal') {
print "[!] La valeur actuelle de AutoTuningLevelLocal peut dégrader les performances\n";
if($options{suggestions}) {
print " Recommandation: ajuster le paramètre avec l'une des deux commandes suivantes\n";
print " [PowerShell] Set-NetTCPSetting -SettingName Internet -AutoTuningLevelLocal Normal\n";
print " [cmd.exe] netsh interface tcp set global autotuninglevel=normal\n";
}
}
}elsif(defined $netConf{AutoTuningLevelGroupPolicy}) {
processWindowsAutoTuningLevel('AutoTuningLevelGroupPolicy');
if($netConf{AutoTuningLevelGroupPolicy} ne 'Normal') {
print "[!] La stratégie de groupe appliquée aux paramètres AutoTuningLevelEffective et AutoTuningLevelGroupPolicy peut dégrader les performances\n";
if($options{suggestions}) {
print " Recommandation: effectuer l'une des deux actions suivantes\n";
print " - configurer la valeur du paramètre AutoTuningLevelGroupPolicy à \"Normal\" dans la stratégie de groupe\n";
print " - utiliser la configuration locale pour ce paramètre (configurer le valeur du paramètre AutoTuningLevelEffective à \"Local\")\n";
}
}
}
if(defined $netConf{ScalingHeuristics} && $netConf{ScalingHeuristics} ne 'Disabled') {
$degradedTcpConf=1;
print "[!] La valeur actuelle de ScalingHeuristics peut dégrader les performances\n";
if($options{suggestions}) {
print " Recommandation: ajuster le paramètre avec une des deux commandes suivantes\n";
print " [PowerShell] Set-NetTCPSetting -SettingName Internet -ScalingHeuristics Disabled\n";
print " [cmd.exe] netsh interface tcp set heuristics disabled\n";
}
}
if(defined $netConf{LinkSpeed} && $netConf{LinkSpeed} ne 'Unknown'
&& defined $netConf{PcieLinkSpeed} && $netConf{PcieLinkSpeed} ne 'Unknown'
&& defined $netConf{PcieLinkWidth}) {
checkPcieLinkSpeedConsistency('LinkSpeed','PcieLinkSpeed','PcieLinkWidth');
}
}else{
map {print " $_: $netConf{$_}\n"} (sort keys %netConf);
if(LINUX) {
my $rmemMax;
if(defined $netConf{'net.core.rmem_max'}) {
if($netConf{'net.core.rmem_max'} =~ /^\s*(\d+)\s*$/) {
($rmemMax,$rmemMaxParam)=($1,'net.core.rmem_max');
}else{
print "[!] Valeur de net.core.rmem_max non reconnue\n";
}
}
if(defined $netConf{'net.ipv4.tcp_rmem'}) {
if($netConf{'net.ipv4.tcp_rmem'} =~ /^\s*(\d+)\s+(\d+)\s+(\d+)\s*$/) {
($rmemMax,$rmemMaxParam,$rmemMaxValuePrefix)=($3,'net.ipv4.tcp_rmem',"$1 $2 ");
}else{
print "[!] Valeur de net.ipv4.tcp_rmem non reconnue\n";
}
}
if(defined $netConf{'net.ipv4.tcp_adv_win_scale'}) {
if($netConf{'net.ipv4.tcp_adv_win_scale'} =~ /^\s*(-?\d+)\s*$/ && $&) {
$tcpAdvWinScale=$1;
}else{
print "[!] Valeur de net.ipv4.tcp_adv_win_scale non reconnue\n";
}
}
if(defined $rmemMax) {
if(defined $tcpAdvWinScale) {
my $overHeadFactor=2 ** abs($tcpAdvWinScale);
$rcvWindow=$rmemMax/$overHeadFactor;
$rcvWindow=$rmemMax-$rcvWindow if($tcpAdvWinScale > 0);
}else{
print "[!] Valeur de net.ipv4.tcp_adv_win_scale non trouvée\n";
}
}
my $wmemMax;
if(defined $netConf{'net.core.wmem_max'}) {
if($netConf{'net.core.wmem_max'} =~ /^\s*(\d+)\s*$/) {
($wmemMax,$wmemMaxParam)=($1,'net.core.wmem_max');
}else{
print "[!] Valeur de net.core.wmem_max non reconnue\n";
}
}
if(defined $netConf{'net.ipv4.tcp_wmem'}) {
if($netConf{'net.ipv4.tcp_wmem'} =~ /^\s*(\d+)\s+(\d+)\s+(\d+)\s*$/) {
($wmemMax,$wmemMaxParam,$wmemMaxValuePrefix)=($3,'net.ipv4.tcp_wmem',"$1 $2 ");
}else{
print "[!] Valeur de net.ipv4.tcp_wmem non reconnue\n";
}
}
$sndWindow=$wmemMax*$TCP_WMEM_SND_WINDOW_RATIO if(defined $wmemMax);
if(exists $netConf{'link.speed'}
&& exists $netConf{'dev.link_speed'} && $netConf{'dev.link_speed'} ne 'Unknown'
&& exists $netConf{'dev.link_width'} && $netConf{'dev.link_width'}) {
checkPcieLinkSpeedConsistency('link.speed','dev.link_speed','dev.link_width');
}
}else{
my %bsdParams;
if(defined $netConf{'kern.ipc.maxsockbuf'}) {
if($netConf{'kern.ipc.maxsockbuf'} =~ /^\s*(\d+)\s*$/) {
$bsdParams{maxsockbuf}=$1;
}else{
print "[!] Valeur de kern.ipc.maxsockbuf non reconnue\n";
}
}
foreach my $tcpParam (qw'recvbuf_auto doautorcvbuf sendbuf_auto doautosndbuf') {
my $fullParam='net.inet.tcp.'.$tcpParam;
if(defined $netConf{$fullParam}) {
if($netConf{$fullParam} =~ /^\s*([01])\s*$/) {
$bsdParams{$tcpParam}=$1;
}else{
print "[!] Valeur de $fullParam non reconnue\n";
}
}
}
foreach my $tcpParam (qw'recvbuf_max autorcvbufmax recvspace sendbuf_max autosndbufmax sendspace') {
my $fullParam='net.inet.tcp.'.$tcpParam;
if(defined $netConf{$fullParam}) {
if($netConf{$fullParam} =~ /^\s*(\d+)\s*$/) {
$bsdParams{$tcpParam}=$1;
}else{
print "[!] Valeur de $fullParam non reconnue\n";
}
}
}
if(defined $bsdParams{maxsockbuf} && defined $bsdParams{recvspace} && defined $bsdParams{sendspace} && $bsdParams{maxsockbuf} < $bsdParams{recvspace} + $bsdParams{sendspace}) {
$bsdParams{maxsockbuf}=$bsdParams{recvspace}+$bsdParams{sendspace};
}
my $recvBufMaxParam = defined $bsdParams{recvbuf_max} ? 'recvbuf_max' : defined $bsdParams{autorcvbufmax} ? 'autorcvbufmax' : undef;
my $sendBufMaxParam = defined $bsdParams{sendbuf_max} ? 'sendbuf_max' : defined $bsdParams{autosndbufmax} ? 'autosndbufmax' : undef;
my $recvBufAutoEnabled=$bsdParams{recvbuf_auto}//$bsdParams{doautorcvbuf};
$recvBufAutoEnabled//=1 if(defined $recvBufMaxParam);
my $sendBufAutoEnabled=$bsdParams{sendbuf_auto}//$bsdParams{doautosndbuf};
$sendBufAutoEnabled//=1 if(defined $sendBufMaxParam);
if($recvBufAutoEnabled) {
($rmemMaxParam,$rcvWindow)=('kern.ipc.maxsockbuf',$bsdParams{maxsockbuf}-($bsdParams{sendspace}//0)) if(defined $bsdParams{maxsockbuf});
($rmemMaxParam,$rcvWindow)=('net.inet.tcp.'.$recvBufMaxParam,$bsdParams{$recvBufMaxParam}) if(defined $recvBufMaxParam && (! defined $rcvWindow || $rcvWindow > $bsdParams{$recvBufMaxParam}));
}else{
($rmemMaxParam,$rcvWindow)=('net.inet.tcp.recvspace',$bsdParams{recvspace}) if(defined $bsdParams{recvspace});
}
if($sendBufAutoEnabled) {
($wmemMaxParam,$sndWindow)=('kern.ipc.maxsockbuf',$bsdParams{maxsockbuf}) if(defined $bsdParams{maxsockbuf});
($wmemMaxParam,$sndWindow)=('net.inet.tcp.'.$sendBufMaxParam,$bsdParams{$sendBufMaxParam}) if(defined $sendBufMaxParam && (! defined $sndWindow || $sndWindow > $bsdParams{$sendBufMaxParam}));
}else{
($wmemMaxParam,$sndWindow)=('net.inet.tcp.sendspace',$bsdParams{sendspace}) if(defined $bsdParams{sendspace});
}
}
}
if(defined $rcvWindow) {
my $maxRttMsFor1Gbps = int($rcvWindow * 1000 / $GOODPUT_1Gbps_Bytes + 0.5);
print " => Latence TCP max pour une réception à 1 Gbps: ${maxRttMsFor1Gbps} ms\n";
if(! MSWIN32 && $maxRttMsFor1Gbps < $RECOMMENDED_MIN_RTT_MAX_FOR_FULL_BANDWIDTH) {
if(LINUX) {
if($tcpAdvWinScale < -3) {
print "[!] Les valeurs actuelles de net.ipv4.tcp_adv_win_scale et $rmemMaxParam peuvent dégrader les performances\n";
}else{
print "[!] La valeur actuelle de $rmemMaxParam peut dégrader les performances\n";
if($options{suggestions}) {
print " Recommandation: ajuster le paramètre avec la commande suivante\n";
print " sysctl -w $rmemMaxParam=".rcvWindowToRmemValue($RECOMMENDED_MIN_RCV_WINDOW_SIZE)."\n";
}
}
}else{
print "[!] La valeur actuelle de $rmemMaxParam peut dégrader les performances\n";
}
}
}
if(defined $sndWindow) {
my $maxRttMsFor700Mbps = int($sndWindow * 1000 / $GOODPUT_700Mbps_Bytes + 0.5);
print " => Latence TCP max pour une émission à 700 Mbps: ${maxRttMsFor700Mbps} ms\n";
if($maxRttMsFor700Mbps < $RECOMMENDED_MIN_RTT_MAX_FOR_FULL_BANDWIDTH) {
print "[!] La valeur actuelle de $wmemMaxParam peut dégrader les performances\n";
if(LINUX && $options{suggestions}) {
print " Recommandation: ajuster le paramètre avec la commande suivante\n";
print " sysctl -w $wmemMaxParam=".sndWindowToWmemValue($RECOMMENDED_MIN_SND_WINDOW_SIZE)."\n";
}
}
}
}
my %windowsAutoTuningLevels=(Disabled => 0,
HighlyRestricted => 2,
Restricted => 4,
Normal => 8,
Experimental => 14);
sub processWindowsAutoTuningLevel {
my $autoTuningParam=shift;
my $autoTuningLevel=$netConf{$autoTuningParam};
if(exists $windowsAutoTuningLevels{$autoTuningLevel}) {
$rcvWindow=65535*2**$windowsAutoTuningLevels{$autoTuningLevel};
}else{
print "[!] Valeur de $autoTuningParam non reconnue\n";
$degradedTcpConf=1;
}
}
sub checkPcieLinkSpeedConsistency {
my ($paramLinkSpeed,$paramPcieLinkSpeed,$paramPcieLinkWidth)=@_;
my $linkSpeed;
if($netConf{$paramLinkSpeed} =~ /^(\d+(?:\.\d)?) ?([KMGT]?)b[p\/]s$/) {
$linkSpeed=$1;
my $unitPrefix=$2;
$linkSpeed*={K => 1E3, M => 1E6, G => 1E9, T => 1E12}->{$unitPrefix} if($unitPrefix);
}elsif(LINUX && $netConf{$paramLinkSpeed} =~ /^\d+$/) {
$linkSpeed = $netConf{$paramLinkSpeed} * 1E6;
}else{
print "[!] Valeur de $paramLinkSpeed non reconnue\n";
return;
}
if($netConf{$paramPcieLinkSpeed} !~ /^(\d+(?:\.\d)?) GT\/s/) {
print "[!] Valeur de $paramPcieLinkSpeed non reconnue\n";
return;
}
my $pcieEfficiency;
if($1 < 8) {
$pcieEfficiency=4/5;
}elsif($1 < 64) {
$pcieEfficiency=64/65;
}else{
$pcieEfficiency=121/128;
}
my $pcieLinkSpeed = $1 * 1E9 * $pcieEfficiency;
if($netConf{$paramPcieLinkWidth} !~ /^\d+$/) {
print "[!] Valeur de $paramPcieLinkWidth non reconnue\n";
return;
}
$pcieLinkSpeed*=$netConf{$paramPcieLinkWidth};
if($pcieLinkSpeed < $linkSpeed) {
print "[!] La carte réseau utilise actuellement une interface PCI Express avec un taux de transfert ne permettant pas d'atteindre le débit maximum du lien réseau\n";
print " Recommandation: connecter la carte réseau sur un autre slot PCI Express (consulter le manuel de la carte mère si besoin pour trouver un slot adéquat)\n"
if($options{suggestions});
}