2 # Copyright (C) 2014 Nicira, Inc.
4 # Licensed under the Apache License, Version 2.0 (the "License");
5 # you may not use this file except in compliance with the License.
6 # You may obtain a copy of the License at:
8 # http://www.apache.org/licenses/LICENSE-2.0
10 # Unless required by applicable law or agreed to in writing, software
11 # distributed under the License is distributed on an "AS IS" BASIS,
12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 # See the License for the specific language governing permissions and
14 # limitations under the License.
16 # Check for programs we'll need.
22 if test -x "$dir/$1"; then
27 echo >&2 "$0: $1 not found in \$PATH, please install and try again"
32 ovs-vsctl --timeout=60 "$@"
35 create_netns_link () {
36 mkdir -p /var/run/netns
37 if [ ! -e /var/run/netns/"$PID" ]; then
38 ln -s /proc/"$PID"/ns/net /var/run/netns/"$PID"
39 trap 'delete_netns_link' 0
40 for signal in 1 2 3 13 14 15; do
41 trap 'delete_netns_link; trap - $signal; kill -$signal $$' $signal
46 delete_netns_link () {
47 rm -f /var/run/netns/"$PID"
50 get_port_for_container_interface () {
54 PORT=`ovs_vsctl --data=bare --no-heading --columns=name find interface \
55 external_ids:container_id="$CONTAINER" \
56 external_ids:container_iface="$INTERFACE"`
57 if [ -z "$PORT" ]; then
58 echo >&2 "$UTIL: Failed to find any attached port" \
59 "for CONTAINER=$CONTAINER and INTERFACE=$INTERFACE"
71 if [ "$#" -lt 3 ]; then
76 if ovs_vsctl br-exists "$BRIDGE" || \
77 ovs_vsctl add-br "$BRIDGE"; then :; else
78 echo >&2 "$UTIL: Failed to create bridge $BRIDGE"
82 if PID=`docker inspect -f '{{.State.Pid}}' "$CONTAINER"`; then :; else
83 echo >&2 "$UTIL: Failed to get the PID of the container"
90 ID=`uuidgen | sed 's/-//g'`
92 ip link add "${PORTNAME}_l" type veth peer name "${PORTNAME}_c"
94 # Add one end of veth to OVS bridge.
95 if ovs_vsctl --may-exist add-port "$BRIDGE" "${PORTNAME}_l" \
96 -- set interface "${PORTNAME}_l" \
97 external_ids:container_id="$CONTAINER" \
98 external_ids:container_iface="$INTERFACE"; then :; else
99 echo >&2 "$UTIL: Failed to add "${PORTNAME}_l" port to bridge $BRIDGE"
100 ip link delete "${PORTNAME}_l"
104 ip link set "${PORTNAME}_l" up
106 # Move "${PORTNAME}_c" inside the container and changes its name.
107 ip link set "${PORTNAME}_c" netns "$PID"
108 ip netns exec "$PID" ip link set dev "${PORTNAME}_c" name "$INTERFACE"
109 ip netns exec "$PID" ip link set "$INTERFACE" up
111 if [ -n "$ADDRESS" ]; then
112 ip netns exec "$PID" ip addr add "$ADDRESS" dev "$INTERFACE"
115 if [ -n "$GATEWAY" ]; then
116 ip netns exec "$PID" ip route add default via "$GATEWAY"
125 if [ "$#" -lt 3 ]; then
130 PORT=`get_port_for_container_interface "$CONTAINER" "$INTERFACE"`
131 if [ -z "$PORT" ]; then
135 ovs_vsctl --if-exists del-port "$PORT"
137 ip link delete "$PORT"
143 if [ "$#" -lt 2 ]; then
148 PORTS=`ovs_vsctl --data=bare --no-heading --columns=name find interface \
149 external_ids:container_id="$CONTAINER"`
150 if [ -z "$PORTS" ]; then
154 for PORT in $PORTS; do
155 ovs_vsctl --if-exists del-port "$PORT"
156 ip link delete "$PORT"
166 if [ "$#" -lt 4 ]; then
171 PORT=`get_port_for_container_interface "$CONTAINER_ID" "$INTERFACE"`
172 if [ -z "$PORT" ]; then
175 ovs_vsctl set port "$PORT" tag="$VLAN"
180 ${UTIL}: Performs integration of Open vSwitch with Docker.
181 usage: ${UTIL} COMMAND
184 add-port BRIDGE INTERFACE CONTAINER [ADDRESS [GATEWAY]]
185 Adds INTERFACE inside CONTAINER and connects it as a port
186 in Open vSwitch BRIDGE. Optionally, sets ADDRESS on
187 INTERFACE. ADDRESS can include a '/' to represent network
188 prefix length. Along with ADDRESS, optionally set the
189 default gateway for the container. e.g.:
190 ${UTIL} add-port br-int eth1 c474a0e2830e 192.168.1.2/24 \
192 del-port BRIDGE INTERFACE CONTAINER
193 Deletes INTERFACE inside CONTAINER and removes its
194 connection to Open vSwitch BRIDGE. e.g.:
195 ${UTIL} del-port br-int eth1 c474a0e2830e
196 del-ports BRIDGE CONTAINER
197 Removes all Open vSwitch interfaces from CONTAINER. e.g.:
198 ${UTIL} del-ports br-int c474a0e2830e
199 set-vlan BRIDGE INTERFACE CONTAINER VLAN
200 Configures the INTERFACE of CONTAINER attached to BRIDGE
201 to become an access port of VLAN. e.g.:
202 ${UTIL} set-vlan br-int eth1 c474a0e2830e 5
204 -h, --help display this help message.
209 search_path ovs-vsctl
213 if (ip netns) > /dev/null 2>&1; then :; else
214 echo >&2 "$UTIL: ip utility not found (or it does not support netns),"\
219 if [ $# -eq 0 ]; then
250 echo >&2 "$UTIL: unknown command \"$1\" (use --help for help)"