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#!/usr/bin/perl
#
# **** 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.
#
# A copy of the GNU General Public License is available as
# `/usr/share/common-licenses/GPL' in the Debian GNU/Linux distribution
# or on the World Wide Web at `http://www.gnu.org/copyleft/gpl.html'.
# You can also obtain it by writing to the Free Software Foundation,
# Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
# MA 02110-1301, USA.
#
# 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: September 2008
# Description: Script to setup bonding interfaces
#
# **** End License ****
#
use lib "/opt/vyatta/share/perl5/";
use Vyatta::Interface;
use Getopt::Long;
use strict;
use warnings;
my %modes = (
"round-robin" => 0,
"active-backup" => 1,
"xor-hash" => 2,
"broadcast" => 3,
"802.3ad" => 4,
"transmit-load-balance" => 5,
"adaptive-load-balance" => 6,
);
sub set_mode {
my ( $intf, $mode ) = @_;
my $val = $modes{$mode};
die "Unknown bonding mode $mode\n" unless defined($val);
open my $fm, '>', "/sys/class/net/$intf/bonding/mode"
or die "Error: $intf is not a bonding device:$!\n";
print {$fm} $val, "\n";
close $fm
or die "Error: $intf can not set mode $val:$!\n";
}
sub get_slaves {
my $intf = shift;
open my $f, '<', "/sys/class/net/$intf/bonding/slaves"
or die "$intf is not a bonding interface";
my $slaves = <$f>;
close $f;
chomp $slaves;
return split( ' ', $slaves );
}
sub add_slave {
my ( $intf, @slaves ) = @_;
open my $f, '>', "/sys/class/net/$intf/bonding/slaves"
or die "$intf is not a bonding interface";
foreach my $slave (@slaves) {
print {$f} "+$slave\n";
}
close $f;
}
sub remove_slave {
my ( $intf, @slaves ) = @_;
open my $f, '>', "/sys/class/net/$intf/bonding/slaves"
or die "$intf is not a bonding interface";
foreach my $slave (@slaves) {
print {$f} "-$slave\n";
}
close $f;
}
sub change_mode {
my ( $intf, $mode ) = @_;
my $interface = new Vyatta::Interface($intf);
die "$intf is not a valid interface" unless $interface;
my @slaves = get_slaves($intf);
remove_slave $intf, @slaves if (@slaves);
if ( $interface->up() ) {
system "sudo ip link set $intf down"
and die "Could not set $intf down ($!)\n";
set_mode( $intf, $mode );
system "sudo ip link set $intf up"
and die "Could not set $intf up ($!)\n";
}
else {
set_mode( $intf, $mode );
}
add_slave $intf, @slaves if (@slaves);
}
sub usage {
print "Usage: $0 --dev=bondX --mode={mode}\n",
print " $0 --dev=bondX --add-port=ethX\n";
print " $0 --dev=bondX --remove-port=ethX\n";
print
print "modes := ", join(',', sort(keys %modes)), "\n";
exit 1;
}
my ($dev, $mode, $add_port, $remove_port);
GetOptions('dev=s' => \$dev,
'mode=s' => \$mode,
'add-port=s' => \$add_port,
'remove-port=s' => \$remove_port,
) or usage();
die "$0: device not specified\n" unless $dev;
change_mode($dev, $mode) if $mode;
add_slave($dev, $add_port) if $add_port;
remove_slave($dev, $add_port) if $remove_port;
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