#! /bin/sh # Copyright (c) 2011 Nicira, 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. usage() { UTIL=$(basename $0) cat <&2 exit 1 fi if test "$#" = 0; then exit 0 fi devs="$@" for dev in $devs; do state=`ip link show dev $dev` || continue echo "# $dev" # Link state (Ethernet addresses, up/down, ...) linkcmd= case $state in *"state UP"* | *[,\<]"UP"[,\>]* ) linkcmd="$linkcmd up" ;; *"state DOWN"*) linkcmd="$linkcmd down" ;; esac if expr "$state" : '.*\bdynamic\b' > /dev/null; then linkcmd="$linkcmd dynamic" fi if qlen=`expr "$state" : '.*qlen \([0-9]+\)'`; then linkcmd="$linkcmd txqueuelen $qlen" fi if hwaddr=`expr "$state" : '.*link/ether \([^ ]*\)'`; then linkcmd="$linkcmd address $hwaddr" fi if brd=`expr "$state" : '.*brd \([^ ]*\)'`; then linkcmd="$linkcmd broadcast $brd" fi if mtu=`expr "$state" : '.*mtu \([0-9]+\)'`; then linkcmd="$linkcmd mtu $mtu" fi if test -n "$linkcmd"; then echo ip link set dev $dev down # Required to change hwaddr. echo ip link set dev $dev $linkcmd fi # IP addresses (including IPv6). echo "ip addr flush dev $dev 2>/dev/null" # Suppresses "Nothing to flush". ip addr show dev $dev | while read addr; do set -- $addr # Check and trim family. family=$1 shift case $family in inet | inet6) ;; *) continue ;; esac # Trim device off the end--"ip" insists on having "dev" precede it. addrcmd= while test $# != 0; do case $1 in dynamic) # Omit kernel-maintained route. continue 2 ;; scope) if test "$2" = link; then # Omit route derived from IP address, e.g. # 172.16.0.0/16 derived from 172.16.12.34. continue 2 fi ;; "$dev"|"$dev:"*) # Address label string addrcmd="$addrcmd label $1" shift continue ;; esac addrcmd="$addrcmd $1" shift done if test "$1" != "$dev"; then addrcmd="$addrcmd $1" fi echo ip -f $family addr add $addrcmd dev $dev done # Routes. echo "ip route flush dev $dev proto boot 2>/dev/null" # Suppresses "Nothing to flush". ip route show dev $dev | while read route; do # "proto kernel" routes are installed by the kernel automatically. case $route in *" proto kernel "*) continue ;; esac echo "ip route add $route dev $dev" done echo done if missing_program iptables-save; then echo "# iptables-save not found in $PATH, not saving iptables state" else echo "# global" echo "iptables-restore <<'EOF'" iptables-save echo "EOF" fi } save_flows () { if missing_program ovs-ofctl; then echo "$0: ovs-ofctl not found in $PATH" >&2 exit 1 fi for bridge in "$@"; do echo "ovs-ofctl add-flows ${bridge} - << EOF" ovs-ofctl dump-flows "${bridge}" | sed -e '/NXST_FLOW/d' \ -e 's/\(idle\|hard\)_age=[^,]*,//g' echo "EOF" done } ovs_vsctl () { ovs-vsctl --no-wait --timeout=1 "$@" } save_ofports () { if missing_program ovs-vsctl; then echo "$0: ovs-vsctl not found in $PATH" >&2 exit 1 fi for bridge in "$@"; do count=0 for iface in `ovs_vsctl list-ifaces ${bridge}`; do ofport=`ovs_vsctl get interface ${iface} ofport` [ "${count}" -eq 0 ] && cmd="ovs-vsctl --no-wait --timeout=1" cmd="${cmd} -- --if-exists set interface "${iface}" \ ofport_request="${ofport}"" # Run set interface command on 50 ports at a time. count=`expr ${count} + 1` [ "${count}" -eq 50 ] && count=0 && echo "${cmd}" && cmd="" done echo "${cmd}" done } while [ $# -ne 0 ] do case $1 in "save-flows") shift save_flows "$@" exit 0 ;; "save-interfaces") shift save_interfaces "$@" exit 0 ;; "save-ofports") shift save_ofports "$@" exit 0 ;; -h | --help) usage exit 0 ;; *) echo >&2 "$0: unknown command \"$1\" (use --help for help)" exit 1 ;; esac done exit 0