175 lines
4.8 KiB
Bash
Executable File
175 lines
4.8 KiB
Bash
Executable File
#! /bin/sh
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# Copyright (c) 2011, 2013 Nicira, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at:
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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case $0 in
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*/*) dir0=`echo "$0" | sed 's,/[^/]*$,,'` ;;
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*) dir0=./ ;;
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esac
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. "$dir0/ovs-lib" || exit 1
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usage() {
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UTIL=$(basename $0)
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cat <<EOF
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${UTIL}: Provides helper functions to save Open vSwitch's configuration.
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usage: $0 COMMAND
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Commands:
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save-interfaces Outputs a shell script on stdout that will restore
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the current kernel configuration of the specified
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network interfaces, as well as the system iptables
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configuration.
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save-flows Outputs a shell script on stdout that will restore
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OpenFlow flows of each Open vSwitch bridge.
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save-ofports Outputs a shell script on stdout that will restore
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the ofport value across a force-reload-kmod.
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This script is meant as a helper for the Open vSwitch init script commands.
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EOF
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}
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save_interfaces () {
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if (ip -V) > /dev/null 2>&1; then :; else
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echo "$0: ip not found in $PATH" >&2
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exit 1
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fi
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if test "$#" = 0; then
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exit 0
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fi
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devs="$@"
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for dev in $devs; do
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state=`ip link show dev $dev` || continue
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echo "# $dev"
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# Link state (Ethernet addresses, up/down, ...)
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linkcmd=
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case $state in
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*"state UP"* | *[,\<]"UP"[,\>]* )
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linkcmd="$linkcmd up"
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;;
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*"state DOWN"*)
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linkcmd="$linkcmd down"
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;;
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esac
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if expr "$state" : '.*\bdynamic\b' > /dev/null; then
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linkcmd="$linkcmd dynamic"
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fi
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if qlen=`expr "$state" : '.*qlen \([0-9]+\)'`; then
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linkcmd="$linkcmd txqueuelen $qlen"
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fi
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if hwaddr=`expr "$state" : '.*link/ether \([^ ]*\)'`; then
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linkcmd="$linkcmd address $hwaddr"
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fi
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if brd=`expr "$state" : '.*brd \([^ ]*\)'`; then
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linkcmd="$linkcmd broadcast $brd"
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fi
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if mtu=`expr "$state" : '.*mtu \([0-9]+\)'`; then
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linkcmd="$linkcmd mtu $mtu"
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fi
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if test -n "$linkcmd"; then
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echo ip link set dev $dev down # Required to change hwaddr.
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echo ip link set dev $dev $linkcmd
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fi
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move_ip_address $dev $dev
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move_ip_routes $dev $dev
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echo
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done
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if (iptables-save) > /dev/null 2>&1; then
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echo "# global"
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echo "iptables-restore <<'EOF'"
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iptables-save
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echo "EOF"
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else
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echo "# iptables-save not found in $PATH, not saving iptables state"
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fi
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}
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save_flows () {
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if (ovs-ofctl --version) > /dev/null 2>&1; then :; else
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echo "$0: ovs-ofctl not found in $PATH" >&2
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exit 1
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fi
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for bridge in "$@"; do
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echo "ovs-ofctl add-flows ${bridge} - << EOF"
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ovs-ofctl dump-flows "${bridge}" | sed -e '/NXST_FLOW/d' \
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-e 's/\(idle\|hard\)_age=[^,]*,//g'
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echo "EOF"
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done
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}
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ovs_vsctl () {
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ovs-vsctl --no-wait "$@"
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}
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save_ofports ()
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{
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if (ovs-vsctl --version) > /dev/null 2>&1; then :; else
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echo "$0: ovs-vsctl not found in $PATH" >&2
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exit 1
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fi
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for bridge in "$@"; do
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count=0
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for iface in `ovs_vsctl list-ifaces ${bridge}`; do
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ofport=`ovs_vsctl get interface ${iface} ofport`
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[ "${count}" -eq 0 ] && cmd="ovs-vsctl --no-wait"
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cmd="${cmd} -- --if-exists set interface "${iface}" \
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ofport_request="${ofport}""
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# Run set interface command on 50 ports at a time.
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count=`expr ${count} + 1`
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[ "${count}" -eq 50 ] && count=0 && echo "${cmd}" && cmd=""
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done
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echo "${cmd}"
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done
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}
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while [ $# -ne 0 ]
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do
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case $1 in
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"save-flows")
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shift
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save_flows "$@"
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exit 0
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;;
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"save-interfaces")
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shift
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save_interfaces "$@"
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exit 0
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;;
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"save-ofports")
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shift
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save_ofports "$@"
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exit 0
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;;
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-h | --help)
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usage
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exit 0
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;;
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*)
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echo >&2 "$0: unknown command \"$1\" (use --help for help)"
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exit 1
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;;
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esac
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done
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exit 0
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