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authorStephen Hemminger <stephen.hemminger@vyatta.com>2008-11-20 12:16:02 -0800
committerStephen Hemminger <stephen.hemminger@vyatta.com>2008-11-20 20:34:16 -0800
commit790663c88fb291ddb5b645bdde62d8229d5e115b (patch)
treebdf236cc76437e82df9254d3cb89ef1c271424bc /lib/Vyatta/Qos/FairQueue.pm
parent22fba825c57ed336bca64ff154bbd911bc6754d5 (diff)
downloadvyatta-cfg-qos-790663c88fb291ddb5b645bdde62d8229d5e115b.tar.gz
vyatta-cfg-qos-790663c88fb291ddb5b645bdde62d8229d5e115b.zip
Change perl module names from VyattaQosXXX to Vyatta::Qos:XXX
Use more multi-level directory hierarchy instead of having all modules at top level.
Diffstat (limited to 'lib/Vyatta/Qos/FairQueue.pm')
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1 files changed, 68 insertions, 0 deletions
diff --git a/lib/Vyatta/Qos/FairQueue.pm b/lib/Vyatta/Qos/FairQueue.pm
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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 Vyatta::Qos::FairQueue;
+
+use strict;
+use warnings;
+
+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";
+}
+
+sub isChanged {
+ my ( $self, $name ) = @_;
+ my $config = new VyattaConfig;
+
+ $config->setLevel("qos-policy fair-queue $name");
+ foreach my $attr ('hash-interval', 'queue-limit') {
+ if ($config->isChanged($attr)) {
+ return $attr
+ }
+ }
+ return undef; # false
+}
+
+1;