#! /bin/sh
-# Copyright (c) 2011 Nicira Networks, Inc.
+# Copyright (c) 2011, 2013 Nicira, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# See the License for the specific language governing permissions and
# limitations under the License.
-if test "X$1" = X--help; then
+usage() {
+ UTIL=$(basename $0)
cat <<EOF
-$0: saves the kernel configuration of network interfaces
-usage: $0 NETDEV...
-
-Outputs a shell script on stdout that will restore the current
-kernel configuration of the specified network interfaces, as
-well as the system iptables configuration.
-
-This script is meant as a helper for the Open vSwitch init
-script "force-reload-kmod" command.
+${UTIL}: Provides helper functions to save Open vSwitch's configuration.
+usage: $0 COMMAND
+
+Commands:
+ save-interfaces Outputs a shell script on stdout that will restore
+ the current kernel configuration of the specified
+ network interfaces, as well as the system iptables
+ configuration.
+ save-flows Outputs a shell script on stdout that will restore
+ Openflow flows of each Open vSwitch bridge.
+ save-ofports Outputs a shell script on stdout that will restore
+ the ofport value across a force-reload-kmod.
+This script is meant as a helper for the Open vSwitch init script commands.
EOF
- exit 0
-fi
-
-PATH=/sbin:/bin:/usr/sbin:/usr/bin
-
-missing_program () {
- save_IFS=$IFS
- IFS=:
- for dir in $PATH; do
- IFS=$save_IFS
- if test -x $dir/$1; then
- return 1
- fi
- done
- IFS=$save_IFS
- return 0
}
-if missing_program ip; then
- echo "$0: ip not found in $PATH" >&2
- exit 1
-fi
-
-if test "$#" = 0; then
- echo "# $0: no parameters given (use \"$0 --help\" for help)"
-fi
-
-devs=$*
-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"
+
+save_interfaces () {
+ if (ip -V) > /dev/null 2>&1; then :; else
+ echo "$0: ip not found in $PATH" >&2
+ exit 1
fi
- if test -n "$linkcmd"; then
- echo ip link set dev $dev down # Required to change hwaddr.
- echo ip link set dev $dev $linkcmd
+
+ if test "$#" = 0; then
+ exit 0
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 $family in
- inet | inet6) ;;
- *) continue ;;
+ devs="$@"
+ 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
- # 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.
+ # 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 $1 in
+ dynamic)
+ # Omit kernel-maintained route.
continue 2
- fi
- ;;
- "$dev"|"$dev:"*)
- # Address label string
- addrcmd="$addrcmd label $1"
- shift
- continue
- ;;
+ ;;
+ 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 $route in
+ *" proto kernel "*) continue ;;
esac
- addrcmd="$addrcmd $1"
- shift
+
+ echo "ip route add $route dev $dev"
done
- if test "$1" != "$dev"; then
- addrcmd="$addrcmd $1"
- fi
- echo ip -f $family addr add $addrcmd dev $dev
+ echo
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
+ if (iptables-save) > /dev/null 2>&1; then
+ echo "# global"
+ echo "iptables-restore <<'EOF'"
+ iptables-save
+ echo "EOF"
+ else
+ echo "# iptables-save not found in $PATH, not saving iptables state"
+ fi
+}
+
+save_flows () {
+ if (ovs-ofctl --version) > /dev/null 2>&1; then :; else
+ echo "$0: ovs-ofctl not found in $PATH" >&2
+ exit 1
+ fi
- echo "ip route add $route dev $dev"
+ for bridge in "$@"; 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
+}
- echo
-done
+ovs_vsctl () {
+ ovs-vsctl --no-wait "$@"
+}
+
+save_ofports ()
+{
+ if (ovs-vsctl --version) > /dev/null 2>&1; then :; else
+ 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"
+ 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
+}
-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
+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
git://git.onelab.eu / sliver-openvswitch.git / blobdiff