Synnefo » snf-ganeti

#!/bin/bash

#

# Copyright (C) 2011, 2012 Google Inc.

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# 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.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

# 02110-1301, USA.

if [ -z "$INTERFACE" ]; then

	echo "No network interface specified"

	exit 1

fi

if [ -z "$MODE" ]; then

	echo "MODE not specified"

	exit 1

fi

# Execute the user-supplied network script, if applicable

if [ -x "@SYSCONFDIR@/ganeti/kvm-vif-bridge" ]; then

	exec @SYSCONFDIR@/ganeti/kvm-vif-bridge

fi

if [ "$MODE" = "bridged" ]; then

	# Fix the autogenerated MAC to have the first octet set to "fe"

	# to discourage the bridge from using the TAP dev's MAC

	FIXED_MAC=$(ip link show $INTERFACE | awk '{if ($1 == "link/ether") printf("fe%s",substr($2,3,15))}')

	ip link set $INTERFACE address $FIXED_MAC

	ip link set $INTERFACE up

	ip link set $INTERFACE mtu $(</sys/class/net/${BRIDGE}/mtu)

	# Connect the interface to the bridge

	brctl addif $BRIDGE $INTERFACE

else

	ip link set $INTERFACE up

	if [ -z "$IP" ]; then

		echo "Routed NIC but no IP address specified"

		exit 1

	fi

	# Route traffic targeted at the IP to the interface

	if [ -n "$LINK" ]; then

		while ip rule del dev $INTERFACE; do :; done

		ip rule add dev $INTERFACE table $LINK

		ip route replace $IP table $LINK proto static dev $INTERFACE

	else

		ip route replace $IP proto static dev $INTERFACE

	fi

	if [ -d "/proc/sys/net/ipv4/conf/$INTERFACE" ]; then

		echo 1 > /proc/sys/net/ipv4/conf/$INTERFACE/proxy_arp

		echo 1 > /proc/sys/net/ipv4/conf/$INTERFACE/forwarding

	fi

	if [ -d "/proc/sys/net/ipv6/conf/$INTERFACE" ]; then

		echo 1 > /proc/sys/net/ipv6/conf/$INTERFACE/proxy_ndp

		echo 1 > /proc/sys/net/ipv6/conf/$INTERFACE/forwarding

	fi

fi