utilities/ovs-ctl.in

   1 #! /bin/sh
   2 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
   3 #
   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:
   7 #
   8 #     http://www.apache.org/licenses/LICENSE-2.0
   9 #
  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.
  15
  16 case $0 in
  17     */*) dir0=`echo "$0" | sed 's,/[^/]*$,,'` ;;
  18     *) dir0=./ ;;
  19 esac
  20 . "$dir0/ovs-lib" || exit 1
  21
  22 for dir in "$sbindir" "$bindir" /sbin /bin /usr/sbin /usr/bin; do
  23     case :$PATH: in
  24         *:$dir:*) ;;
  25         *) PATH=$PATH:$dir ;;
  26     esac
  27 done
  28
  29 ## ----- ##
  30 ## start ##
  31 ## ----- ##
  32
  33 # Keep track of removed vports so we can reload them if needed
  34 removed_vports=""
  35
  36 insert_mods () {
  37     # Try loading openvswitch again.
  38     action "Inserting openvswitch module" modprobe openvswitch
  39
  40     for vport in $removed_vports; do
  41         # Don't treat failures to load vports as fatal error
  42         action "Inserting $vport module" modprobe $vport || true
  43     done
  44 }
  45
  46 insert_mod_if_required () {
  47     # If this kernel has no module support, expect we're done.
  48     if test ! -e /proc/modules
  49     then
  50         log_success_msg "Kernel has no loadable module support. Skipping modprobe"
  51         return 0
  52     fi
  53
  54     # If openvswitch is already loaded then we're done.
  55     test -e /sys/module/openvswitch -o -e /sys/module/openvswitch_mod && \
  56      return 0
  57
  58     # Load openvswitch.  If that's successful then we're done.
  59     insert_mods && return 0
  60
  61     # If the bridge module is loaded, then that might be blocking
  62     # openvswitch.  Try to unload it, if there are no bridges.
  63     test -e /sys/module/bridge || return 1
  64     bridges=`echo /sys/class/net/*/bridge | sed 's,/sys/class/net/,,g;s,/bridge,,g'`
  65     if test "$bridges" != "*"; then
  66         log_warning_msg "not removing bridge module because bridges exist ($bridges)"
  67         return 1
  68     fi
  69     action "removing bridge module" rmmod bridge || return 1
  70
  71     # Try loading openvswitch again.
  72     insert_mods
  73 }
  74
  75 ovs_vsctl () {
  76     ovs-vsctl --no-wait "$@"
  77 }
  78
  79 set_system_ids () {
  80     set ovs_vsctl set Open_vSwitch .
  81
  82     OVS_VERSION=`ovs-vswitchd --version | sed 's/.*) //;1q'`
  83     set "$@" ovs-version="$OVS_VERSION"
  84
  85     case $SYSTEM_ID in
  86         random)
  87             id_file=$etcdir/system-id.conf
  88             uuid_file=$etcdir/install_uuid.conf
  89             if test -e "$id_file"; then
  90                 SYSTEM_ID=`cat "$id_file"`
  91             elif test -e "$uuid_file"; then
  92                 # Migrate from old file name.
  93                 . "$uuid_file"
  94                 SYSTEM_ID=$INSTALLATION_UUID
  95                 echo "$SYSTEM_ID" > "$id_file"
  96             elif SYSTEM_ID=`uuidgen`; then
  97                 echo "$SYSTEM_ID" > "$id_file"
  98             else
  99                 log_failure_msg "missing uuidgen, could not generate system ID"
 100             fi
 101             ;;
 102
 103         '')
 104             log_failure_msg "system ID not configured, please use --system-id"
 105             ;;
 106
 107         *)
 108             ;;
 109     esac
 110     set "$@" external-ids:system-id="\"$SYSTEM_ID\""
 111
 112     if test X"$SYSTEM_TYPE" != X; then
 113         set "$@" system-type="\"$SYSTEM_TYPE\""
 114     else
 115         log_failure_msg "no default system type, please use --system-type"
 116     fi
 117
 118     if test X"$SYSTEM_VERSION" != X; then
 119         set "$@" system-version="\"$SYSTEM_VERSION\""
 120     else
 121         log_failure_msg "no default system version, please use --system-version"
 122     fi
 123
 124     action "Configuring Open vSwitch system IDs" "$@" $extra_ids
 125 }
 126
 127 check_force_cores () {
 128     if test X"$FORCE_COREFILES" = Xyes; then
 129         ulimit -c 67108864
 130     fi
 131 }
 132
 133 del_transient_ports () {
 134     for port in `ovs-vsctl --bare -- --columns=name find port other_config:transient=true`; do
 135         ovs_vsctl -- del-port "$port"
 136     done
 137 }
 138
 139 start_ovsdb () {
 140     check_force_cores
 141
 142     if daemon_is_running ovsdb-server; then
 143         log_success_msg "ovsdb-server is already running"
 144     else
 145         # Create initial database or upgrade database schema.
 146         upgrade_db $DB_FILE $DB_SCHEMA || return 1
 147
 148         # Start ovsdb-server.
 149         set ovsdb-server "$DB_FILE"
 150         for db in $EXTRA_DBS; do
 151             case $db in
 152                 /*) ;;
 153                 *) db=$dbdir/$db ;;
 154             esac
 155
 156             if test ! -f "$db"; then
 157                 log_warning_msg "$db (from \$EXTRA_DBS) does not exist."
 158             elif ovsdb-tool db-version "$db" >/dev/null; then
 159                 set "$@" "$db"
 160             else
 161                 log_warning_msg "$db (from \$EXTRA_DBS) cannot be read as a database (see error message above)"
 162             fi
 163         done
 164         set "$@" -vconsole:emer -vsyslog:err -vfile:info
 165         set "$@" --remote=punix:"$DB_SOCK"
 166         set "$@" --private-key=db:Open_vSwitch,SSL,private_key
 167         set "$@" --certificate=db:Open_vSwitch,SSL,certificate
 168         set "$@" --bootstrap-ca-cert=db:Open_vSwitch,SSL,ca_cert
 169         start_daemon "$OVSDB_SERVER_PRIORITY" "$OVSDB_SERVER_WRAPPER" "$@" \
 170             || return 1
 171
 172         # Initialize database settings.
 173         ovs_vsctl -- init -- set Open_vSwitch . db-version="$schemaver" \
 174             || return 1
 175         set_system_ids || return 1
 176         if test X"$DELETE_BRIDGES" = Xyes; then
 177             for bridge in `ovs_vsctl list-br`; do
 178                 ovs_vsctl del-br $bridge
 179             done
 180         fi
 181         if test X"$DELETE_TRANSIENT_PORTS" = Xyes; then
 182             del_transient_ports
 183         fi
 184     fi
 185 }
 186
 187 add_managers () {
 188     # Now that ovs-vswitchd has started and completed its initial
 189     # configuration, tell ovsdb-server to conenct to the remote managers.  We
 190     # used to do this at ovsdb-server startup time, but waiting for
 191     # ovs-vswitchd to finish configuring means that remote managers see less
 192     # churn in the database at startup or restart.  (For example, managers
 193     # won't briefly see empty datapath-id or ofport columns for records that
 194     # exist at startup.)
 195     action "Enabling remote OVSDB managers" \
 196         ovs-appctl -t ovsdb-server ovsdb-server/add-remote \
 197             db:Open_vSwitch,Open_vSwitch,manager_options
 198 }
 199
 200 start_forwarding () {
 201     check_force_cores
 202
 203     insert_mod_if_required || return 1
 204
 205     if daemon_is_running ovs-vswitchd; then
 206         log_success_msg "ovs-vswitchd is already running"
 207     else
 208         # Increase the limit on the number of open file descriptors.
 209         # On Linux, ovs-vswitchd needs about three file descriptors
 210         # per bridge and "n-handler-threads" file descriptors per bridge
 211         # port, so this allows a very large number of bridges and ports.
 212         MAXFD=65535
 213         if [ $(ulimit -n) -lt $MAXFD ]; then
 214             ulimit -n $MAXFD
 215         fi
 216
 217             # Start ovs-vswitchd.
 218             set ovs-vswitchd unix:"$DB_SOCK"
 219             set "$@" -vconsole:emer -vsyslog:err -vfile:info
 220             if test X"$MLOCKALL" != Xno; then
 221                 set "$@" --mlockall
 222             fi
 223             start_daemon "$OVS_VSWITCHD_PRIORITY" "$OVS_VSWITCHD_WRAPPER" "$@"
 224     fi
 225 }
 226
 227 ## ---- ##
 228 ## stop ##
 229 ## ---- ##
 230
 231 stop_ovsdb () {
 232     stop_daemon ovsdb-server
 233 }
 234
 235 stop_forwarding () {
 236     stop_daemon ovs-vswitchd
 237 }
 238
 239 ## ----------------- ##
 240 ## force-reload-kmod ##
 241 ## ----------------- ##
 242
 243 internal_interfaces () {
 244     # Outputs a list of internal interfaces:
 245     #
 246     #   - There is an internal interface for every bridge, whether it
 247     #     has an Interface record or not and whether the Interface
 248     #     record's 'type' is properly set or not.
 249     #
 250     #   - There is an internal interface for each Interface record whose
 251     #     'type' is 'internal'.
 252     #
 253     # But ignore interfaces that don't really exist.
 254     for d in `(ovs_vsctl --bare \
 255                 -- --columns=name find Interface type=internal \
 256                     -- list-br) | sort -u`
 257     do
 258         if test -e "/sys/class/net/$d"; then
 259                 printf "%s " "$d"
 260             fi
 261     done
 262 }
 263
 264 ovs_save () {
 265     bridges=`ovs_vsctl -- --real list-br`
 266     if [ -n "${bridges}" ] && \
 267         "$datadir/scripts/ovs-save" "$1" ${bridges} > "$2"; then
 268         chmod +x "$2"
 269         return 0
 270     fi
 271     [ -z "${bridges}" ] && return 0
 272 }
 273
 274 save_ofports_if_required () {
 275     # Save OpenFlow port numbers if we are upgrading from a pre-1.10 branch.
 276     #
 277     # (Versions 1.10 and later save OpenFlow port numbers without assistance,
 278     # so we don't have to do anything for them.
 279     case `ovs-appctl version | sed 1q` in
 280         "ovs-vswitchd (Open vSwitch) 1."[0-9].*)
 281             action "Saving ofport values" ovs_save save-ofports \
 282                 "${script_ofports}"
 283             ;;
 284     esac
 285 }
 286
 287 save_flows_if_required () {
 288     if test X"$DELETE_BRIDGES" != Xyes; then
 289         action "Saving flows" ovs_save save-flows "${script_flows}"
 290     fi
 291 }
 292
 293 save_interfaces () {
 294     "$datadir/scripts/ovs-save" save-interfaces ${ifaces} \
 295         > "${script_interfaces}"
 296 }
 297
 298 restore_ofports () {
 299     [ -x "${script_ofports}" ] && \
 300         action "Restoring ofport values" "${script_ofports}"
 301 }
 302
 303 flow_restore_wait () {
 304     ovs_vsctl set open_vswitch . other_config:flow-restore-wait="true"
 305 }
 306
 307 flow_restore_complete () {
 308     ovs_vsctl --if-exists remove open_vswitch . other_config \
 309         flow-restore-wait="true"
 310 }
 311
 312 restore_flows () {
 313     [ -x "${script_flows}" ] && \
 314         action "Restoring saved flows" "${script_flows}"
 315 }
 316
 317 restore_interfaces () {
 318     [ ! -x "${script_interfaces}" ] && return 0
 319     action "Restoring interface configuration" "${script_interfaces}"
 320     rc=$?
 321     if test $rc = 0; then
 322         level=debug
 323     else
 324         level=err
 325     fi
 326     log="logger -p daemon.$level -t ovs-save"
 327     $log "interface restore script exited with status $rc:"
 328     $log -f "$script_interfaces"
 329 }
 330
 331 init_restore_scripts () {
 332     script_interfaces=`mktemp`
 333     script_flows=`mktemp`
 334     script_ofports=`mktemp`
 335     trap 'rm -f "${script_interfaces}" "${script_flows}" "${script_ofports}"' 0
 336 }
 337
 338 force_reload_kmod () {
 339     ifaces=`internal_interfaces`
 340     action "Detected internal interfaces: $ifaces" true
 341
 342     init_restore_scripts
 343     save_flows_if_required
 344     save_ofports_if_required
 345
 346     # Restart the database first, since a large database may take a
 347     # while to load, and we want to minimize forwarding disruption.
 348     stop_ovsdb
 349     start_ovsdb
 350
 351     # Restore of ofports should happen before vswitchd is restarted.
 352     restore_ofports
 353
 354     stop_forwarding
 355
 356     if action "Saving interface configuration" save_interfaces; then
 357         :
 358     else
 359         log_warning_msg "Failed to save configuration, not replacing kernel module"
 360         start_forwarding
 361         add_managers
 362         exit 1
 363     fi
 364     chmod +x "$script_interfaces"
 365
 366     for dp in `ovs-dpctl dump-dps`; do
 367         action "Removing datapath: $dp" ovs-dpctl del-dp "$dp"
 368     done
 369
 370     for vport in `awk '/^vport_/ { print $1 }' /proc/modules`; do
 371         action "Removing $vport module" rmmod $vport
 372         if ! grep -q $vport /proc/modules; then
 373             removed_vports="$removed_vports $vport"
 374         fi
 375     done
 376
 377     # try both old and new names in case this is post upgrade
 378     if test -e /sys/module/openvswitch_mod; then
 379         action "Removing openvswitch module" rmmod openvswitch_mod
 380     elif test -e /sys/module/openvswitch; then
 381         action "Removing openvswitch module" rmmod openvswitch
 382     fi
 383
 384     # Start vswitchd by asking it to wait till flow restore is finished.
 385     flow_restore_wait
 386     start_forwarding
 387
 388     # Restore saved flows and inform vswitchd that we are done.
 389     restore_flows
 390     flow_restore_complete
 391     add_managers
 392
 393     restore_interfaces
 394
 395     "$datadir/scripts/ovs-check-dead-ifs"
 396 }
 397
 398 ## ------- ##
 399 ## restart ##
 400 ## ------- ##
 401
 402 save_interfaces_if_required () {
 403     # Save interfaces if we are upgrading from a pre-1.10 branch.
 404     case `ovs-appctl version | sed 1q` in
 405         "ovs-vswitchd (Open vSwitch) 1."[0-9].*)
 406             ifaces=`internal_interfaces`
 407             action "Detected internal interfaces: $ifaces" true
 408             if action "Saving interface configuration" save_interfaces; then
 409                 chmod +x "$script_interfaces"
 410             fi
 411             ;;
 412     esac
 413 }
 414
 415 restart () {
 416     if daemon_is_running ovsdb-server && daemon_is_running ovs-vswitchd; then
 417         init_restore_scripts
 418         save_interfaces_if_required
 419         save_flows_if_required
 420         save_ofports_if_required
 421     fi
 422
 423     # Restart the database first, since a large database may take a
 424     # while to load, and we want to minimize forwarding disruption.
 425     stop_ovsdb
 426     start_ovsdb
 427
 428     # Restore of ofports, if required, should happen before vswitchd is
 429     # restarted.
 430     restore_ofports
 431
 432     stop_forwarding
 433
 434     # Start vswitchd by asking it to wait till flow restore is finished.
 435     flow_restore_wait
 436     start_forwarding
 437
 438     # Restore saved flows and inform vswitchd that we are done.
 439     restore_flows
 440     flow_restore_complete
 441     add_managers
 442
 443     # Restore the interfaces if required. Return true even if restore fails.
 444     restore_interfaces || true
 445 }
 446
 447 ## --------------- ##
 448 ## enable-protocol ##
 449 ## --------------- ##
 450
 451 enable_protocol () {
 452     # Translate the protocol name to a number, because "iptables -n -L" prints
 453     # some protocols by name (despite the -n) and therefore we need to look for
 454     # both forms.
 455     #
 456     # (iptables -S output is more uniform but old iptables doesn't have it.)
 457     protonum=`grep "^$PROTOCOL[         ]" /etc/protocols | awk '{print $2}'`
 458     if expr X"$protonum" : X'[0-9]\{1,\}$' > /dev/null; then :; else
 459         log_failure_msg "unknown protocol $PROTOCOL"
 460         return 1
 461     fi
 462
 463     name=$PROTOCOL
 464     match="(\$2 == \"$PROTOCOL\" || \$2 == $protonum)"
 465     insert="iptables -I INPUT -p $PROTOCOL"
 466     if test X"$DPORT" != X; then
 467         name="$name to port $DPORT"
 468         match="$match && /dpt:$DPORT/"
 469         insert="$insert --dport $DPORT"
 470     fi
 471     if test X"$SPORT" != X; then
 472         name="$name from port $SPORT"
 473         match="$match && /spt:$SPORT/"
 474         insert="$insert --sport $SPORT"
 475     fi
 476     insert="$insert -j ACCEPT"
 477
 478     if (iptables -n -L INPUT) >/dev/null 2>&1; then
 479         if iptables -n -L INPUT | awk "$match { n++ } END { exit n == 0 }"
 480         then
 481             # There's already a rule for this protocol.  Don't override it.
 482             log_success_msg "iptables already has a rule for $name, not explicitly enabling"
 483         else
 484             action "Enabling $name with iptables" $insert
 485         fi
 486     elif (iptables --version) >/dev/null 2>&1; then
 487         action "cannot list iptables rules, not adding a rule for $name"
 488     else
 489         action "iptables binary not installed, not adding a rule for $name"
 490     fi
 491 }
 492
 493 ## ---- ##
 494 ## main ##
 495 ## ---- ##
 496
 497 set_defaults () {
 498     SYSTEM_ID=
 499
 500     DELETE_BRIDGES=no
 501     DELETE_TRANSIENT_PORTS=no
 502
 503     DAEMON_CWD=/
 504     FORCE_COREFILES=yes
 505     MLOCKALL=yes
 506     OVSDB_SERVER_PRIORITY=-10
 507     OVS_VSWITCHD_PRIORITY=-10
 508     OVSDB_SERVER_WRAPPER=
 509     OVS_VSWITCHD_WRAPPER=
 510
 511     DB_FILE=$dbdir/conf.db
 512     DB_SOCK=$rundir/db.sock
 513     DB_SCHEMA=$datadir/vswitch.ovsschema
 514     EXTRA_DBS=
 515
 516     PROTOCOL=gre
 517     DPORT=
 518     SPORT=
 519
 520     type_file=$etcdir/system-type.conf
 521     version_file=$etcdir/system-version.conf
 522
 523     if test -e "$type_file" ; then
 524         SYSTEM_TYPE=`cat $type_file`
 525         SYSTEM_VERSION=`cat $version_file`
 526     elif (lsb_release --id) >/dev/null 2>&1; then
 527         SYSTEM_TYPE=`lsb_release --id -s`
 528         system_release=`lsb_release --release -s`
 529         system_codename=`lsb_release --codename -s`
 530         SYSTEM_VERSION="${system_release}-${system_codename}"
 531     else
 532         SYSTEM_TYPE=unknown
 533         SYSTEM_VERSION=unknown
 534     fi
 535 }
 536
 537 usage () {
 538     set_defaults
 539     cat <<EOF
 540 $0: controls Open vSwitch daemons
 541 usage: $0 [OPTIONS] COMMAND
 542
 543 This program is intended to be invoked internally by Open vSwitch startup
 544 scripts.  System administrators should not normally invoke it directly.
 545
 546 Commands:
 547   start              start Open vSwitch daemons
 548   stop               stop Open vSwitch daemons
 549   restart            stop and start Open vSwitch daemons
 550   status             check whether Open vSwitch daemons are running
 551   version            print versions of Open vSwitch daemons
 552   load-kmod          insert modules if not already present
 553   force-reload-kmod  save OVS network device state, stop OVS, unload kernel
 554                      module, reload kernel module, start OVS, restore state
 555   enable-protocol    enable protocol specified in options with iptables
 556   help               display this help message
 557
 558 One of the following options is required for "start", "restart" and "force-reload-kmod":
 559   --system-id=UUID   set specific ID to uniquely identify this system
 560   --system-id=random  use a random but persistent UUID to identify this system
 561
 562 Other important options for "start", "restart" and "force-reload-kmod":
 563   --system-type=TYPE  set system type (e.g. "XenServer")
 564   --system-version=VERSION  set system version (e.g. "5.6.100-39265p")
 565   --external-id="key=value"
 566                      add given key-value pair to Open_vSwitch external-ids
 567   --delete-bridges   delete all bridges just before starting ovs-vswitchd
 568
 569 Less important options for "start", "restart" and "force-reload-kmod":
 570   --daemon-cwd=DIR               set working dir for OVS daemons (default: $DAEMON_CWD)
 571   --no-force-corefiles           do not force on core dumps for OVS daemons
 572   --no-mlockall                  do not lock all of ovs-vswitchd into memory
 573   --ovsdb-server-priority=NICE   set ovsdb-server's niceness (default: $OVSDB_SERVER_PRIORITY)
 574   --ovs-vswitchd-priority=NICE   set ovs-vswitchd's niceness (default: $OVS_VSWITCHD_PRIORITY)
 575
 576 Debugging options for "start", "restart" and "force-reload-kmod":
 577   --ovsdb-server-wrapper=WRAPPER
 578   --ovs-vswitchd-wrapper=WRAPPER
 579   --ovs-vswitchd-wrapper=WRAPPER
 580      run specified daemon under WRAPPER (either 'valgrind' or 'strace')
 581
 582 File location options:
 583   --db-file=FILE     database file name (default: $DB_FILE)
 584   --db-sock=SOCKET   JSON-RPC socket name (default: $DB_SOCK)
 585   --db-schema=FILE   database schema file name (default: $DB_SCHEMA)
 586
 587 Options for "enable-protocol":
 588   --protocol=PROTOCOL  protocol to enable with iptables (default: gre)
 589   --sport=PORT       source port to match (for tcp or udp protocol)
 590   --dport=PORT       ddestination port to match (for tcp or udp protocol)
 591
 592 Other options:
 593   -h, --help                  display this help message
 594   -V, --version               display version information
 595
 596 Default directories with "configure" option and environment variable override:
 597   logs: @LOGDIR@ (--with-logdir, OVS_LOGDIR)
 598   pidfiles and sockets: @RUNDIR@ (--with-rundir, OVS_RUNDIR)
 599   conf.db: @DBDIR@ (--with-dbdir, OVS_DBDIR)
 600   system configuration: @sysconfdir@ (--sysconfdir, OVS_SYSCONFDIR)
 601   data files: @pkgdatadir@ (--pkgdatadir, OVS_PKGDATADIR)
 602   user binaries: @bindir@ (--bindir, OVS_BINDIR)
 603   system binaries: @sbindir@ (--sbindir, OVS_SBINDIR)
 604
 605 Please report bugs to bugs@openvswitch.org (see REPORTING-BUGS for details).
 606 EOF
 607
 608     exit 0
 609 }
 610
 611 set_option () {
 612     var=`echo "$option" | tr abcdefghijklmnopqrstuvwxyz- ABCDEFGHIJKLMNOPQRSTUVWXYZ_`
 613     eval set=\${$var+yes}
 614     eval old_value=\$$var
 615     if test X$set = X || \
 616         (test $type = bool && \
 617         test X"$old_value" != Xno && test X"$old_value" != Xyes); then
 618         echo >&2 "$0: unknown option \"$arg\" (use --help for help)"
 619         return
 620     fi
 621     eval $var=\$value
 622 }
 623
 624 daemons () {
 625     echo ovsdb-server ovs-vswitchd
 626 }
 627
 628 set_defaults
 629 extra_ids=
 630 command=
 631 for arg
 632 do
 633     case $arg in
 634         -h | --help)
 635             usage
 636             ;;
 637         -V | --version)
 638             echo "$0 (Open vSwitch) $VERSION"
 639             exit 0
 640             ;;
 641         --external-id=*)
 642             value=`expr X"$arg" : 'X[^=]*=\(.*\)'`
 643             case $value in
 644                 *=*)
 645                     extra_ids="$extra_ids external-ids:$value"
 646                     ;;
 647                 *)
 648                     echo >&2 "$0: --external-id argument not in the form \"key=value\""
 649                     exit 1
 650                     ;;
 651             esac
 652             ;;
 653         --[a-z]*=*)
 654             option=`expr X"$arg" : 'X--\([^=]*\)'`
 655             value=`expr X"$arg" : 'X[^=]*=\(.*\)'`
 656             type=string
 657             set_option
 658             ;;
 659         --no-[a-z]*)
 660             option=`expr X"$arg" : 'X--no-\(.*\)'`
 661             value=no
 662             type=bool
 663             set_option
 664             ;;
 665         --[a-z]*)
 666             option=`expr X"$arg" : 'X--\(.*\)'`
 667             value=yes
 668             type=bool
 669             set_option
 670             ;;
 671         -*)
 672             echo >&2 "$0: unknown option \"$arg\" (use --help for help)"
 673             exit 1
 674             ;;
 675         *)
 676             if test X"$command" = X; then
 677                 command=$arg
 678             else
 679                 echo >&2 "$0: exactly one non-option argument required (use --help for help)"
 680                 exit 1
 681             fi
 682             ;;
 683     esac
 684 done
 685 case $command in
 686     start)
 687         start_ovsdb || exit 1
 688         start_forwarding
 689         add_managers
 690         ;;
 691     stop)
 692         stop_forwarding
 693         stop_ovsdb
 694         ;;
 695     restart)
 696         restart
 697         ;;
 698     status)
 699         rc=0
 700         for daemon in `daemons`; do
 701             daemon_status $daemon || rc=$?
 702         done
 703         exit $rc
 704         ;;
 705     version)
 706         for daemon in `daemons`; do
 707             $daemon --version
 708         done
 709         ;;
 710     force-reload-kmod)
 711             force_reload_kmod
 712         ;;
 713     load-kmod)
 714         insert_mod_if_required
 715         ;;
 716     enable-protocol)
 717         enable_protocol
 718         ;;
 719     help)
 720         usage
 721         ;;
 722     '')
 723         echo >&2 "$0: missing command name (use --help for help)"
 724         exit 1
 725         ;;
 726     *)
 727         echo >&2 "$0: unknown command \"$command\" (use --help for help)"
 728         exit 1
 729         ;;
 730 esac