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#! /bin/sh
#
# Copyright (C) 2011 Nicira Networks, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
### BEGIN INIT INFO
# Provides:          openvswitch-switch
# Required-Start:    $network $named $remote_fs $syslog
# Required-Stop:     $remote_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Open vSwitch switch
### END INIT INFO


INSTALLPREFIX=

if [ -n "$INSTALLPREFIX" ]
then
    PATH=$INSTALLPREFIX/sbin:$INSTALLPREFIX/bin:$PATH
fi

(test -x $INSTALLPREFIX/sbin/ovs-vswitchd && test -x $INSTALLPREFIX/sbin/ovsdb-server) || exit 0

. $INSTALLPREFIX/share/openvswitch/scripts/ovs-lib
test -e /etc/default/openvswitchdpdk-switch && . /etc/default/openvswitchdpdk-switch

if test X"$BRCOMPAT" = Xyes && test ! -x $INSTALLPREFIX/sbin/ovs-brcompatd; then
    BRCOMPAT=no
    log_warning_msg "ovs-brcompatd missing, disabling bridge compatibility"
fi

ovs_ctl () {
    set $INSTALLPREFIX/share/openvswitch/scripts/ovs-ctl "$@"
    if test X"$BRCOMPAT" = Xyes; then
        set "$@" --brcompat
    fi
    "$@"
}

load_kmod () {
    ovs_ctl load-kmod || exit $?
}

start () {
    if ovs_ctl load-kmod; then
	:
    else
	echo "Module has probably not been built for this kernel."
	if ! test -d $INSTALLPREFIX/share/doc/openvswitch-datapath-source; then
	    echo "Install the openvswitch-datapath-source package, then read"
	else
            echo "For instructions, read"
	fi
	echo "$INSTALLPREFIX/share/doc/openvswitch-datapath-source/README.Debian"
    fi
    set ovs_ctl ${1-start} --system-id=random
    if test X"$FORCE_COREFILES" != X; then
	set "$@" --force-corefiles="$FORCE_COREFILES"
    fi
    "$@" || exit $?

    ovs_ctl --protocol=gre enable-protocol
}

stop () {
    ovs_ctl stop
}

case $1 in
    start)
        start
	;;
    stop | force-stop)
        stop
        ;;
    reload | force-reload)
        # The OVS daemons keep up-to-date.
        ;;
    restart)
        stop
        start
        ;;
    status)
        ovs_ctl status
        ;;
    force-reload-kmod)
        start force-reload-kmod
        ;;
    load-kmod)
        load_kmod
        ;;
    *)
        echo "Usage: $0 {start|stop|restart|force-reload|status|force-stop|force-reload-kmod|load-kmod}" >&2
        exit 1
        ;;
esac

exit 0