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# This is a wrapper around FIFO queue discipline
#
#
# **** 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 VyattaQosDropTail;
use strict;
require VyattaConfig;
use VyattaQosUtil;
my %fields = (
_limit => undef,
);
sub new {
my ( $that, $config ) = @_;
my $level = $config->setLevel();
my $class = ref($that) || $that;
my $self = {%fields};
$self->{_limit} = $config->returnValue("queue-limit");
return bless $self, $class;
}
sub commands {
my ( $self, $out, $dev ) = @_;
my $limit = $self->{_limit};
my $cmd = "qdisc add dev $dev root pfifo";
$cmd .= " limit $limit" if defined $limit;
printf {$out} "%s\n", $cmd;
}
sub isChanged {
my ($self, $name) = @_;
my $config = new VyattaConfig;
$config->setLevel("qos-policy drop-tail $name");
return $config->isChanged('queue-limit');
}
1;
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