4 ### expected to be run as root
8 #################### global vars
9 RUN_DIR=/var/run/openvswitch
10 DB_CONF_FILE=/etc/openvswitch/conf.db
11 DB_SCHEMA=/usr/share/openvswitch/vswitch.ovsschema
12 DB_PID_FILE=/var/run/openvswitch/db.pid
13 DB_LOG=/var/log/ovs-db.log
14 DB_CTRL_SOCKET=/var/run/openvswitch/db-ctrl.sock
16 DB_SOCKET=/var/run/openvswitch/db.sock
18 SWITCH_PID_FILE=/var/run/openvswitch/switch.pid
19 SWITCH_LOG=/var/log/ovs-switch.log
20 SWITCH_SOCKET=/var/run/openvswitch/switch.sock
22 #################### helper functions
24 function kill_pltap_ovs () {
25 killall pltap-ovs 2>/dev/null || :
33 function is_switch_running {
34 ovs-appctl --target=$SWITCH_SOCKET version >& /dev/null
37 function is_db_running {
38 ovs-appctl --target=$DB_CTRL_SOCKET version >& /dev/null
43 echo $(ip addr show to "$IP/32" | perl -ne '/^\s*\d+:\s*([\w-]+):/ && print $1')
46 function wait_server () {
51 expire=$(($(date +%s) + $timeout))
53 ## wait for it to be up - xxx todo - could use a timeout of some kind
54 while [ ! -f "$pid_file" ]; do
55 echo "Waiting for $server_name to start... $(($expire - $(date +%s)))s left" >&2
57 [ $(date +%s) -ge $expire ] && return 1
62 function wait_device () {
66 expire=$(($(date +%s) + $timeout))
68 while ! ip link show up | egrep -q "^[0-9]+: +$tapname:"; do
69 echo "Waiting for $tapname to come UP...$(($expire - $(date +%s)))s left" >&2
71 [ $(date +%s) -ge $expire ] && return 1
76 ######################################## startup
77 function start_db () {
79 [[ -n "$@" ]] && error "Usage: $COMMAND start-db"
82 conf_dir=$(dirname $DB_CONF_FILE)
83 [ -d $conf_dir ] || mkdir -p $conf_dir
84 [ -f $DB_CONF_FILE ] || ovsdb-tool create $DB_CONF_FILE $DB_SCHEMA
87 [ -d $RUN_DIR ] || mkdir -p $RUN_DIR
90 [ -f $DB_CONF_FILE ] || { echo "Could not initialize $DB_CONF_FILE - exiting" ; exit 1 ; }
91 [ -d $RUN_DIR ] || { echo "Could not initialize $RUN_DIR - exiting" ; exit 1 ; }
94 if [ ! -f "$DB_PID_FILE" ]; then
95 ovsdb-server --remote=punix:$DB_SOCKET \
96 --remote=db:Open_vSwitch,manager_options \
97 --private-key=db:SSL,private_key \
98 --certificate=db:SSL,certificate \
99 --bootstrap-ca-cert=db:SSL,ca_cert \
100 --pidfile=$DB_PID_FILE \
102 --unixctl=$DB_CTRL_SOCKET \
103 --detach >& /dev/null
105 echo 'ovsdb-server appears to be running already, *not* starting'
107 wait_server $DB_PID_FILE ovsdb-server 30
110 function stop_db () { pkill ovsdb-server; }
113 function start_switch () {
115 [[ -n "$@" ]] && error "Usage: $COMMAND start-switch"
117 # ensure ovsdb-server is running
118 is_db_running || { echo "ovsdb-server not running" >&2 ; exit 1 ; }
120 if [ ! -f "$SWITCH_PID_FILE" ] ; then
122 --pidfile=$SWITCH_PID_FILE \
123 --log-file=$SWITCH_LOG \
124 --unixctl=$SWITCH_SOCKET \
126 unix:$DB_SOCKET >& /dev/null
128 echo 'ovs-vswitchd appears to be running already, *not* starting'
130 wait_server $SWITCH_PID_FILE ovs-vswitchd 30
133 function stop_switch () { pkill ovs-vswitchd ; }
137 [ -n "$pids" ] && ps $pids
150 #################### create functions
151 function create_bridge () {
153 [[ -z "$@" ]] && error "Usage: ${COMMAND} create-bridge <IP/PREFIX>"
155 [[ -n "$@" ]] && error "Usage: ${COMMAND} create-bridge <IP/PREFIX>"
158 PREFIX=${ip_prefix#*/}
161 # ensure ovs-vswitchd is running
162 is_switch_running || { echo "ovs-vswitchd not running" >&2 ; exit 1 ; }
164 # check whether the address is already assigned
165 TAPNAME=$(tapname $IP)
166 if [ ! -z "$TAPNAME" ]; then
167 if ovs-vsctl --db=unix:$DB_SOCKET br-exists "$TAPNAME"; then
172 error "$IP already assigned to $TAPNAME"
177 # xxx wouldn't that be safer if left-aligned ?
183 wait_device $TAPNAME 60 && \
184 ovs-vsctl --db=$DB_SOCKET add-br $TAPNAME -- set bridge $TAPNAME datapath_type=planetlab
189 function create_port () {
192 [[ -z "$@" ]] || error "$COMMAND create-port <bridge> <port>"
194 [[ -n "$@" ]] || error "$COMMAND create-port <bridge> <port>"
196 # ensure ovs-vswitchd is running
197 is_switch_running || { echo "ovs-vswitchd not running" >&2 ; exit 1 ; }
200 if ! ovs-vsctl --db=$DB_SOCKET list-ports "$bridge" | grep -q "^$port\$"; then
201 ovs-vsctl --db=$DB_SOCKET add-port "$bridge" "$port" -- set interface "$port" type=tunnel
203 ovs-appctl --target=$SWITCH_SOCKET netdev-tunnel/get-port "$port"
207 #################### del functions
208 function del_bridge () {
210 [[ -z "$@" ]] && error "Usage: ${COMMAND} del-bridge <bridge name>"
211 bridge_name=$1; shift
212 [[ -n "$@" ]] && error "Usage: ${COMMAND} del-bridge <bridge name>"
215 if ! is_switch_running; then
216 # we can delete the bridge even if ovs-vswitchd is not running,
217 # but we need a running ovsdb-server
218 is_db_running || { echo "ovsdb-server not running" >&2; exit 1; }
223 if ovs-vsctl --db=$DB_SOCKET $W br-exists "$bridge_name"; then
224 ovs-vsctl --db=$DB_SOCKET $W del-br $bridge_name
229 function del_port () {
230 [[ -z "$@" ]] && error "Usage: ${COMMAND} del-port <port>"
231 bridge_name=$1; shift
232 [[ -n "$@" ]] && error "Usage: ${COMMAND} del-port <port>"
235 if ! is_switch_running; then
236 # we can delete the port even if ovs-vswitchd is not running,
237 # but we need a running ovsdb-server
238 is_db_running || { echo "ovsdb-server not running" >&2; exit 1; }
243 if ovs-vsctl --db=$DB_SOCKET $W port-to-br "$1" >/dev/null 2>&1; then
244 ovs-vsctl --db=$DB_SOCKET $W del-port "$1"
250 SUPPORTED_SUBCOMMANDS="start stop status
251 start_db stop_db start_switch stop_switch
252 create_bridge create_port del_bridge del_port"
255 message="Usage: $COMMAND <subcommand> ...
256 Supported subcommands are (dash or underscore is the same):
257 $SUPPORTED_SUBCOMMANDS"
258 [[ -z "$@" ]] && error "$message"
261 # support dashes instead of underscores
262 subcommand=$(echo $subcommand | sed -e s,-,_,)
264 for supported in $SUPPORTED_SUBCOMMANDS; do [ "$subcommand" = "$supported" ] && found=yes; done
266 [ -z "$found" ] && error $message