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#!/usr/bin/perl
#
# Module: vyatta-show-queueing.pl
#
# **** 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) 2007 Vyatta, Inc.
# All Rights Reserved.
#
# Author: Stephen Hemminger
# Date: July 2008
# Description: Script to display QoS information in pretty form
#
# **** End License ****
#
use Getopt::Long;
use strict;
use warnings;
my $intf_type;
my $summary;
# Map from kernel qdisc names to configuration names
my %qdisc_types = (
'pfifo_fast' => 'default',
'sfq' => 'fair-queue',
'tbf' => 'rate-limit',
'htb' => 'traffic-shaper',
'pfifo' => 'drop-tail',
'red' => 'random-detect',
# future
'prio' => 'priority',
'netem' => 'network-emulator',
'gred' => 'random-detect',
'hfsc' => 'fair-share',
);
# This is only partially true names can really be anything.
my %interface_types = (
'ethernet' => 'eth',
'serial' => 'wan',
'tunnel' => 'tun',
'bridge' => 'br',
'loopback' => 'lo',
'pppoe' => 'pppoe',
'pppoa' => 'pppoa',
'adsl' => 'adsl',
'multilink' => 'ml',
'wireless' => 'wlan',
'bonding' => 'bond',
);
sub show_brief {
my $match = '.+'; # match anything
if ($intf_type) {
my $prefix = $interface_types{$intf_type};
defined $prefix
or die "Unknown interface type $intf_type\n";
$match = "^$prefix\\d(\\.\\d)?\$";
}
print "Output queues:\n";
print "Interface Qos-Policy Sent Dropped Overlimit\n";
# Read qdisc info
open( my $tc, '/sbin/tc -s qdisc ls |' ) or die 'tc command failed';
while (<$tc>) {
# qdisc sfq 8003: dev eth1 root limit 127p quantum 1514b
my ( undef, $qdisc, undef, undef, $interface, $parent ) = split;
# Sent 13860 bytes 88 pkt (dropped 0, overlimits 0 requeues 0)
$_ = <$tc>;
chomp;
my ( undef, $sent, undef, undef, undef, undef, $drop, undef, $over ) =
split;
# punctuation was never jamal's strong suit
$drop =~ s/,$//;
# rate 0bit 0pps backlog 0b 0p requeues 0
<$tc>;
if ( $parent eq 'root' && $interface =~ $match ) {
my $shaper = $qdisc_types{$qdisc};
defined $shaper or $shaper = '[' . $qdisc . ']';
printf "%-10s %-16s %10d %10d %10d\n", $interface, $shaper, $sent,
$drop, $over;
}
}
close $tc;
}
# FIXME This needs to change to deal with multi-level tree and ingress
sub show {
my $interface = shift;
print "\n";
print "$interface Output queue:\n";
print "Class Qos-Policy Sent Dropped Overlimit\n";
my $tc;
my %classmap = ();
open( $tc, "/sbin/tc class show dev $interface |" )
or die 'tc command failed: $!';
while (<$tc>) {
# class htb 1:1 root rate 1000Kbit ceil 1000Kbit burst 1600b cburst 1600b
# class htb 1:2 parent 1:1 leaf 8001:
# class ieee80211 :2 parent 8001:
my ( undef, undef, $id, $parent, $pid, $leaf, $qid ) = split;
if ( $parent eq 'parent' && $leaf eq 'leaf' ) {
$classmap{$qid} = $id;
}
}
close $tc;
open( $tc, "/sbin/tc -s qdisc show dev $interface |" )
or die 'tc command failed: $!';
my ( $rootid, $qdisc, $parent, $qid );
while (<$tc>) {
chomp;
my @fields = split;
if ( $fields[0] eq 'qdisc' ) {
# qdisc htb 1: root r2q 10 default 20 direct_packets...
( undef, $qdisc, $qid, $parent ) = @fields;
next;
}
# skip unwanted extra stats
next if ( $fields[0] ne 'Sent' );
# Sent 13860 bytes 88 pkt (dropped 0, overlimits 0 requeues 0)
my ( undef, $sent, undef, undef, undef, undef, $drop, undef, $over ) =
@fields;
# fix silly punctuation bug in tc
$drop =~ s/,$//;
my $shaper = $qdisc_types{$qdisc};
# this only happens if user uses some qdisc not in pretty print list
defined $shaper or $shaper = '[' . $qdisc . ']';
my $id = $classmap{$qid};
defined $id or $id = $qid;
if ( $parent eq 'root' ) {
printf "%-10s", $id;
$rootid = $id;
}
else {
$id =~ s/$rootid//;
printf " %-8s", $id;
}
printf "%-16s %10d %10d %10d\n", $shaper, $sent, $drop, $over;
}
close $tc;
}
sub usage {
print "Usage: $0 [--type={ethernet,serial}] --brief\n";
print " $0 interface(s)\n";
exit 1;
}
GetOptions(
'type=s' => \$intf_type,
'brief' => sub { show_brief(); exit 0; },
) or usage();
# if no arguments given, rebuild ARGV with list of all interfaces
if ( $#ARGV == -1 ) {
my $match = '.+'; # match anything
if ($intf_type) {
my $prefix = $interface_types{$intf_type};
defined $prefix
or die "Unknown interface type $intf_type\n";
$match = "^$prefix\\d(\\.\\d)?\$";
}
open( my $ip, '/sbin/ip link show |' ) or die 'ip command failed';
while (<$ip>) {
# 1: lo: <LOOPBACK, UP,>...
my ( undef, $interface ) = split;
$interface =~ s/:$//;
if ( $interface =~ $match ) {
unshift @ARGV, $interface;
}
# link/loopback ....
<$ip>;
}
close $ip;
}
foreach my $interface (@ARGV) {
show($interface);
}
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