/usr/share/openvswitch/scripts/ovs-save is in openvswitch-switch 1.4.0-1ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 | #! /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.
if test "X$1" = X--help; then
cat <<EOF
$0: saves the kernel configuration of network interfaces
usage: $0 NETDEV...
Outputs a shell script on stdout that will restore the current
kernel configuration of the specified network interfaces, as
well as the system iptables configuration.
This script is meant as a helper for the Open vSwitch init
script "force-reload-kmod" command.
EOF
exit 0
fi
PATH=/sbin:/bin:/usr/sbin:/usr/bin
missing_program () {
save_IFS=$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` || 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 down # Required to change hwaddr.
echo ip link set $dev $linkcmd
fi
# IP addresses (including IPv6).
echo "ip addr flush $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
exit 0
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