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# This is a wrapper around Stochastic Fair Queue(SFQ) queue discipline
# Since SFQ is a hard to explain, use the name fair-queue since SFQ
# is most similar to Weighted Fair Queue (WFQ) on Cisco IOS.
#
#
# **** License ****
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# 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.
#
# This code was originally developed by Vyatta, Inc.
# Portions created by Vyatta are Copyright (C) 2008 Vyatta, Inc.
# All Rights Reserved.
# **** End License ****
package VyattaQosFairQueue;
use strict;
require VyattaConfig;
# Fair Queue
# Uses SFQ which is similar to (but not same as) WFQ
my %fields = (
_perturb => undef,
_limit => undef,
);
sub new {
my ( $that, $config ) = @_;
my $class = ref($that) || $that;
my $self = {%fields};
$self->{_perturb} = $config->returnValue("hash-interval");
$self->{_limit} = $config->returnValue("queue-limit");
return bless $self, $class;
}
sub commands {
my ( $self, $out, $dev ) = @_;
print {$out} "qdisc add dev $dev root sfq";
print {$out} " perturb $self->{_perturb}" if ( defined $self->{_perturb} );
print {$out} " limit $self->{_limit}" if ( defined $self->{_limit} );
print "\n";
}
1;
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