Bus topology calculation.
#!/bin/bash
#------------------------------------------------------------------------------
#
# $Id$
#
# Copyright (C) 2006-2008 Florian Pose, Ingenieurgemeinschaft IgH
#
# This file is part of the IgH EtherCAT Master.
#
# The IgH EtherCAT Master 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.
#
# The IgH EtherCAT Master 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 the IgH EtherCAT Master; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
# ---
#
# The license mentioned above concerns the source code only. Using the EtherCAT
# technology and brand is only permitted in compliance with the industrial
# property and similar rights of Beckhoff Automation GmbH.
#
#------------------------------------------------------------------------------
# this ifup.d script adds special network interfaces to a network bridge
CFGNAME=${1}
IFNAME=${2}
# customize here
BRNAME="eoebr0"
INTERFACES=""
BRCTL="/sbin/brctl"
LOGGER="logger -t ifup-eoe"
# if the current interface in the list of interfaces to bridge?
if ! echo ${INTERFACES} | grep -qw ${IFNAME}; then
exit 0;
fi
# does the EoE bridge already exist?
if ! ${BRCTL} show | grep -q "^${BRNAME}"; then
${LOGGER} Creating ${BRNAME}
${BRCTL} addbr ${BRNAME} # create it
fi
${LOGGER} Adding ${IFNAME} to ${BRNAME}
ip link set ${IFNAME} down
ip addr flush dev ${IFNAME}
${BRCTL} addif ${BRNAME} ${IFNAME}
ip link set ${IFNAME} up
#------------------------------------------------------------------------------