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ovs-save: Refactor and move some code to ovs-lib.

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An upcoming commit becomes the second user of the
new functions.

Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Gurucharan Shetty 2015-06-21 08:02:15 -07:00
parent 5cdc4335e5
commit 7a62e5ccbb
2 changed files with 73 additions and 55 deletions
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65
utilities/ovs-lib.in
View File

@ -250,3 +250,68 @@ daemon_is_running () {
pidfile=$rundir/$1.pid
test -e "$pidfile" && pid=`cat "$pidfile"` && pid_exists "$pid" && pid_comm_check $1 $pid
} >/dev/null 2>&1
# Prints commands needed to restore the ip address of an interface.
save_ip_address () {
dev="$1"
# 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 "$2" = link -a "$family" != inet6; then
# Omit route derived from IP address, e.g.
# 172.16.0.0/16 derived from 172.16.12.34,
# but preserve IPv6 link-local address.
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
}
# Prints commands needed to restore the ip route of an interface.
save_ip_routes () {
dev="$1"
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
}

63
utilities/ovs-save
View File

@ -14,6 +14,12 @@
# See the License for the specific language governing permissions and
# limitations under the License.
case $0 in
*/*) dir0=`echo "$0" | sed 's,/[^/]*$,,'` ;;
*) dir0=./ ;;
esac
. "$dir0/ovs-lib" || exit 1
usage() {
UTIL=$(basename $0)
cat <<EOF
@ -78,62 +84,9 @@ save_interfaces () {
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
save_ip_address $dev
# 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 "$2" = link -a "$family" != inet6; then
# Omit route derived from IP address, e.g.
# 172.16.0.0/16 derived from 172.16.12.34,
# but preserve IPv6 link-local address.
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
save_ip_routes $dev
echo
done