1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
# Traffic shaper
# This is a extended form of Hierarchal Token Bucket with
# more admin friendly features. Similar in spirt to other shaper scripts
# such as wondershaper.
{
package ShaperClass;
use strict;
require VyattaConfig;
use VyattaQosMatch;
my %fields = (
id => undef,
_priority => undef,
_rate => undef,
_ceiling => undef,
_burst => undef,
_match => undef,
);
sub new {
my ( $that, $config, $id ) = @_;
my $class = ref($that) || $that;
my $self = {%fields};
bless $self, $class;
$self->_define($config, $id);
return $self;
}
sub _define {
my ( $self, $config, $id ) = @_;
my $level = $config->setLevel();
my @matches = ();
$self->{_id} = sprintf "%04x", $id;
$self->{_priority} = $config->returnValue("priority");
$self->{_rate} = $config->returnValue("rate");
$self->{_ceiling} = $config->returnValue("ceiling");
$self->{_burst} = $config->returnValue("burst");
foreach my $match ($config->listNodes("match")) {
$config->setLevel("$level match $match");
push @matches, new VyattaQosMatch($config);
}
$self->{_match} = \@matches;
}
sub _getPercentRate {
my ($rate, $speed) = @_;
if ( ! defined $rate ) {
return; # leave rate undef
}
# Rate might be a percentage of speed
if ( $rate =~ /%$/ ) {
my $percent = substr( $rate, 0, length($rate) - 1 );
if ( $percent < 0 || $percent > 100 ) {
die "Invalid percentage bandwidth\n";
}
$rate = ( $percent * $speed ) / 100.;
} else {
$rate = VyattaQosUtil::getRate($rate);
}
return $rate;
}
sub commands {
my ( $self, $out, $dev, $speed ) = @_;
my $rate = _getPercentRate($self->{_rate}, $speed);
my $ceil = _getPercentRate($self->{_ceiling}, $speed);
my $id = $self->{_id};
my $matches = $self->{_match};
die "Rate is not defined\n" if (! defined $rate );
die "Class $id rate $rate > shaper rate $speed\n" if ($rate > $speed);
# create the class
my $cmd ="class add dev $dev parent 1:1 classid 1:$id htb rate $rate";
if ( defined $ceil) {
if ($ceil < $rate ) {
die "Rate limit (ceiling) $ceil < base rate $rate\n";
}
$cmd .= " ceil $ceil";
}
$cmd .= " burst $self->{_burst}" if ( defined $self->{_burst} );
$cmd .= " prio $self->{_priority}" if ( defined $self->{_priority} );
print {$out} $cmd . "\n";
# create leaf qdisc
print {$out} "qdisc add dev $dev parent 1:$id sfq\n";
foreach my $match (@$matches) {
$match->filter( $out, $dev, $id );
}
}
}
package VyattaQosTrafficShaper;
@ISA = qw/VyattaQosPolicy/;
use strict;
require VyattaConfig;
use VyattaQosUtil;
my $defaultId = 0x4000;
my %fields = (
_rate => undef,
_classes => undef,
);
# new VyattaQosTrafficShaper($config)
# Create a new instance based on config information
sub new {
my ( $that, $config ) = @_;
my $self = {%fields};
my $class = ref($that) || $that;
bless $self, $class;
$self->_define($config);
return $self;
}
# Rate can be something like "auto" or "10.2mbit"
sub _getAutoRate {
my ($rate, $dev) = @_;
if ( $rate eq "auto" ) {
my $rate = VyattaQosUtil::interfaceRate($dev);
if ( ! defined $rate ) {
die "Auto speed setting but can't get rate from $dev\n";
}
} else {
$rate = VyattaQosUtil::getRate($rate);
}
return $rate;
}
# Setup new instance.
# Assumes caller has done $config->setLevel to "traffic-shaper $name"
sub _define {
my ( $self, $config ) = @_;
my $level = $config->setLevel();
my @classes = ( );
$self->{_rate} = $config->returnValue("rate");
$config->setLevel("$level default");
push @classes, new ShaperClass( $config, $defaultId);
$config->setLevel($level);
foreach my $id ( $config->listNodes("class") ) {
$config->setLevel("$level class $id");
push @classes, new ShaperClass( $config, $id );
}
$self->{_classes} = \@classes;
}
sub commands {
my ( $self, $out, $dev ) = @_;
my $rate = _getAutoRate($self->{_rate}, $dev);
my $classes = $self->{_classes};
my @tc = ( );
print {$out} "qdisc add dev $dev root handle 1: htb default "
. sprintf("%04x",$defaultId) . "\n";
print {$out} "class add dev $dev parent 1: classid 1:1 htb rate $rate\n";
foreach my $class (@$classes) {
$class->commands( $out, $dev, $rate );
}
}
1;
|
