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
15 DB_SOCKET=/var/run/openvswitch/db.sock
17 SWITCH_PID_FILE=/var/run/openvswitch/switch.pid
18 SWITCH_LOG=/var/log/ovs-switch.log
19 SWITCH_SOCKET=/var/run/openvswitch/switch.sock
21 #################### helper functions
23 function kill_pltap_ovs () {
24 killall pltap-ovs 2>/dev/null || :
32 function is_switch_running {
33 ovs-appctl --target=$SWITCH_SOCKET version >& /dev/null
38 echo $(ip addr show to "$IP/32" | perl -ne '/^\s*\d+:\s*([\w-]+):/ && print $1')
41 function wait_server () {
46 expire=$(($(date +%s) + $timeout))
48 ## wait for it to be up - xxx todo - could use a timeout of some kind
49 while [ ! -f "$pid_file" ]; do
50 echo "Waiting for $server_name to start... $(($expire - $(date +%s)))s left" >&2
52 [ $(date +%s) -ge $expire ] && return 1
57 function wait_device () {
61 expire=$(($(date +%s) + $timeout))
63 while ! ip link show up | egrep -q "^[0-9]+: +$tapname:"; do
64 echo "Waiting for $tapname to come UP...$(($expire - $(date +%s)))s left" >&2
66 [ $(date +%s) -ge $expire ] && return 1
71 ######################################## startup
72 function start_db () {
74 [[ -n "$@" ]] && error "Usage: $COMMAND start-db"
77 conf_dir=$(dirname $DB_CONF_FILE)
78 [ -d $conf_dir ] || mkdir -p $conf_dir
79 [ -f $DB_CONF_FILE ] || ovsdb-tool create $DB_CONF_FILE $DB_SCHEMA
82 [ -d $RUN_DIR ] || mkdir -p $RUN_DIR
85 [ -f $DB_CONF_FILE ] || { echo "Could not initialize $DB_CONF_FILE - exiting" ; exit 1 ; }
86 [ -d $RUN_DIR ] || { echo "Could not initialize $RUN_DIR - exiting" ; exit 1 ; }
89 if [ ! -f "$DB_PID_FILE" ]; then
90 ovsdb-server --remote=punix:$DB_SOCKET \
91 --remote=db:Open_vSwitch,manager_options \
92 --private-key=db:SSL,private_key \
93 --certificate=db:SSL,certificate \
94 --bootstrap-ca-cert=db:SSL,ca_cert \
95 --pidfile=$DB_PID_FILE \
99 echo 'ovsdb-server appears to be running already, *not* starting'
101 wait_server $DB_PID_FILE ovsdb-server 30
104 function stop_db () { pkill ovsdb-server; }
107 function start_switch () {
109 [[ -n "$@" ]] && error "Usage: $COMMAND start-switch"
111 if [ ! -f "$SWITCH_PID_FILE" ] ; then
113 --pidfile=$SWITCH_PID_FILE \
114 --log-file=$SWITCH_LOG \
115 --unixctl=$SWITCH_SOCKET \
117 unix:$DB_SOCKET >& /dev/null
119 echo 'ovs-vswitchd appears to be running already, *not* starting'
121 wait_server $SWITCH_PID_FILE ovs-vswitchd 30
124 function stop_switch () { pkill ovs-vswitchd ; }
128 [ -n "$pids" ] && ps $pids
141 #################### create functions
142 function create_bridge () {
144 [[ -z "$@" ]] && error "Usage: ${COMMAND} create-bridge <IP/PREFIX>"
146 [[ -n "$@" ]] && error "Usage: ${COMMAND} create-bridge <IP/PREFIX>"
149 PREFIX=${ip_prefix#*/}
152 # ensure ovs-vswitchd is running
153 is_switch_running || { echo "ovs-vswitchd not running" >&2 ; exit 1 ; }
155 # check whether the address is already assigned
156 TAPNAME=$(tapname $IP)
157 if [ ! -z "$TAPNAME" ]; then
158 if ovs-vsctl --db=unix:$DB_SOCKET br-exists "$TAPNAME"; then
163 error "$IP already assigned to $TAPNAME"
168 # xxx wouldn't that be safer if left-aligned ?
174 wait_device $TAPNAME 60 && \
175 ovs-vsctl --db=unix:$DB_SOCKET add-br $TAPNAME -- set bridge $TAPNAME datapath_type=planetlab
180 function create_port () {
182 [[ -z "$@" ]] && error "$COMMAND create-port <bridge> <port>"
184 [[ -z "$@" ]] && error "$COMMAND create-port <bridge> <port>"
186 [[ -n "$@" ]] && error "$COMMAND create-port <bridge> <port>"
189 if ! ovs-vsctl --db=unix:$DB_SOCKET list-ports "$bridge" | grep -q "^$port\$"; then
190 ovs-vsctl --db=unix:$DB_SOCKET add-port "$bridge" "$port" -- set interface "$port" type=tunnel
192 ovs-appctl --target=$SWITCH_SOCKET netdev-tunnel/get-port "$port"
196 #################### del functions
197 function del_bridge () {
199 [[ -z "$@" ]] && error "Usage: ${COMMAND} del-bridge <bridge name>"
200 bridge_name=$1; shift
201 [[ -n "$@" ]] && error "Usage: ${COMMAND} del-bridge <bridge name>"
204 is_switch_running || W="--no-wait"
206 if ovs-vsctl --db=unix:$DB_SOCKET br-exists "$bridge_name"; then
207 ovs-vsctl --db=unix:$DB_SOCKET $W del-br $bridge_name
212 function del_port () {
213 [[ -z "$@" ]] && error "Usage: ${COMMAND} del-port <port>"
214 bridge_name=$1; shift
215 [[ -n "$@" ]] && error "Usage: ${COMMAND} del-port <port>"
218 if ovs-vsctl --db=unix:$DB_SOCKET port-to-br "$1" >/dev/null 2>&1; then
219 ovs-vsctl --db=unix:$DB_SOCKET del-port "$1"
225 SUPPORTED_SUBCOMMANDS="start stop status
226 start_db stop_db start_switch stop_switch
227 create_bridge create_port del_bridge del_port"
230 message="Usage: $COMMAND <subcommand> ...
231 Supported subcommands are (dash or underscore is the same):
232 $SUPPORTED_SUBCOMMANDS"
233 [[ -z "$@" ]] && error "$message"
236 # support dashes instead of underscores
237 subcommand=$(echo $subcommand | sed -e s,-,_,)
239 for supported in $SUPPORTED_SUBCOMMANDS; do [ "$subcommand" = "$supported" ] && found=yes; done
241 [ -z "$found" ] && error $message