utilities/ovs-ctl.in

   1 #! /bin/sh
   2 # Copyright (C) 2009, 2010, 2011, 2012 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:$dir ;;
  26     esac
  27 done
  28
  29 ## ----- ##
  30 ## start ##
  31 ## ----- ##
  32
  33 insert_openvswitch_mod_if_required () {
  34     # If openvswitch is already loaded then we're done.
  35     test -e /sys/module/openvswitch -o -e /sys/module/openvswitch_mod && \
  36      return 0
  37
  38     # Load openvswitch.  If that's successful then we're done.
  39     action "Inserting openvswitch module" modprobe openvswitch && return 0
  40
  41     # If the bridge module is loaded, then that might be blocking
  42     # openvswitch.  Try to unload it, if there are no bridges.
  43     test -e /sys/module/bridge || return 1
  44     bridges=`echo /sys/class/net/*/bridge | sed 's,/sys/class/net/,,g;s,/bridge,,g'`
  45     if test "$bridges" != "*"; then
  46         log_warning_msg "not removing bridge module because bridges exist ($bridges)"
  47         return 1
  48     fi
  49     action "removing bridge module" rmmod bridge || return 1
  50
  51     # Try loading openvswitch again.
  52     action "Inserting openvswitch module" modprobe openvswitch
  53 }
  54
  55 insert_brcompat_mod_if_required () {
  56     if test -e /sys/module/bridge; then
  57         log_warning_msg "bridge module is loaded, not loading brcompat"
  58         return 1
  59     fi
  60     test -e /sys/module/brcompat -o -e /sys/module/brcompat_mod && return 0
  61     action "Inserting brcompat module" modprobe brcompat
  62 }
  63
  64 insert_mod_if_required () {
  65     insert_openvswitch_mod_if_required || return 1
  66     if test X"$BRCOMPAT" = Xyes; then
  67         if insert_brcompat_mod_if_required; then
  68             :
  69         else
  70             log_warning_msg "could not load brcompat module, disabling bridge compatibility"
  71             BRCOMPAT=no
  72         fi
  73     fi
  74 }
  75
  76 ovs_vsctl () {
  77     ovs-vsctl --no-wait --timeout=5 "$@"
  78 }
  79
  80 ovsdb_tool () {
  81     ovsdb-tool -vconsole:off "$@"
  82 }
  83
  84 create_db () {
  85     action "Creating empty database $DB_FILE" ovsdb_tool create "$DB_FILE" "$DB_SCHEMA"
  86 }
  87
  88 upgrade_db () {
  89     schemaver=`ovsdb_tool schema-version "$DB_SCHEMA"`
  90     if test ! -e "$DB_FILE"; then
  91         log_warning_msg "$DB_FILE does not exist"
  92         install -d -m 755 -o root -g root `dirname $DB_FILE`
  93         create_db
  94     elif test X"`ovsdb_tool needs-conversion "$DB_FILE" "$DB_SCHEMA"`" != Xno; then
  95         # Back up the old version.
  96         version=`ovsdb_tool db-version "$DB_FILE"`
  97         cksum=`ovsdb_tool db-cksum "$DB_FILE" | awk '{print $1}'`
  98         backup=$DB_FILE.backup$version-$cksum
  99         action "Backing up database to $backup" cp "$DB_FILE" "$backup" || return 1
 100
 101         # Compact database.  This is important if the old schema did not enable
 102         # garbage collection (i.e. if it did not have any tables with "isRoot":
 103         # true) but the new schema does.  In that situation the old database
 104         # may contain a transaction that creates a record followed by a
 105         # transaction that creates the first use of the record.  Replaying that
 106         # series of transactions against the new database schema (as "convert"
 107         # does) would cause the record to be dropped by the first transaction,
 108         # then the second transaction would cause a referential integrity
 109         # failure (for a strong reference).
 110         #
 111         # Errors might occur on an Open vSwitch downgrade if ovsdb-tool doesn't
 112         # understand some feature of the schema used in the OVSDB version that
 113         # we're downgrading from, so we don't give up on error.
 114         action "Compacting database" ovsdb_tool compact "$DB_FILE"
 115
 116         # Upgrade or downgrade schema.
 117         if action "Converting database schema" ovsdb_tool convert "$DB_FILE" "$DB_SCHEMA"; then
 118             :
 119         else
 120             log_warning_msg "Schema conversion failed, using empty database instead"
 121             rm -f "$DB_FILE"
 122             create_db
 123         fi
 124     fi
 125 }
 126
 127 set_system_ids () {
 128     set ovs_vsctl set Open_vSwitch .
 129
 130     OVS_VERSION=`ovs-vswitchd --version | sed 's/.*) //;1q'`
 131     set "$@" ovs-version="$OVS_VERSION"
 132
 133     case $SYSTEM_ID in
 134         random)
 135             id_file=$etcdir/system-id.conf
 136             uuid_file=$etcdir/install_uuid.conf
 137             if test -e "$id_file"; then
 138                 SYSTEM_ID=`cat "$id_file"`
 139             elif test -e "$uuid_file"; then
 140                 # Migrate from old file name.
 141                 . "$uuid_file"
 142                 SYSTEM_ID=$INSTALLATION_UUID
 143                 echo "$SYSTEM_ID" > "$id_file"
 144             elif SYSTEM_ID=`uuidgen`; then
 145                 echo "$SYSTEM_ID" > "$id_file"
 146             else
 147                 log_failure_msg "missing uuidgen, could not generate system ID"
 148             fi
 149             ;;
 150
 151         '')
 152             log_failure_msg "system ID not configured, please use --system-id"
 153             ;;
 154
 155         *)
 156             ;;
 157     esac
 158     set "$@" external-ids:system-id="\"$SYSTEM_ID\""
 159
 160     if test X"$SYSTEM_TYPE" != X; then
 161         set "$@" system-type="\"$SYSTEM_TYPE\""
 162     else
 163         log_failure_msg "no default system type, please use --system-type"
 164     fi
 165
 166     if test X"$SYSTEM_VERSION" != X; then
 167         set "$@" system-version="\"$SYSTEM_VERSION\""
 168     else
 169         log_failure_msg "no default system version, please use --system-version"
 170     fi
 171
 172     action "Configuring Open vSwitch system IDs" "$@" $extra_ids
 173 }
 174
 175 check_force_cores () {
 176     if test X"$FORCE_COREFILES" = Xyes; then
 177         ulimit -Sc 67108864
 178     fi
 179 }
 180
 181 start_ovsdb () {
 182     check_force_cores
 183
 184     if daemon_is_running ovsdb-server; then
 185         log_success_msg "ovsdb-server is already running"
 186     else
 187         # Create initial database or upgrade database schema.
 188         upgrade_db || return 1
 189
 190         # Start ovsdb-server.
 191         set ovsdb-server "$DB_FILE"
 192         for db in $EXTRA_DBS; do
 193             case $db in
 194                 /*) ;;
 195                 *) db=$dbdir/$db ;;
 196             esac
 197
 198             if test ! -f "$db"; then
 199                 log_warning_msg "$db (from \$EXTRA_DBS) does not exist."
 200             elif ovsdb-tool db-version "$db" >/dev/null; then
 201                 set "$@" "$db"
 202             else
 203                 log_warning_msg "$db (from \$EXTRA_DBS) cannot be read as a database (see error message above)"
 204             fi
 205         done
 206         set "$@" -vconsole:emer -vsyslog:err -vfile:info
 207         set "$@" --remote=punix:"$DB_SOCK"
 208         set "$@" --remote=db:Open_vSwitch,Open_vSwitch,manager_options
 209         set "$@" --private-key=db:Open_vSwitch,SSL,private_key
 210         set "$@" --certificate=db:Open_vSwitch,SSL,certificate
 211         set "$@" --bootstrap-ca-cert=db:Open_vSwitch,SSL,ca_cert
 212         start_daemon "$OVSDB_SERVER_PRIORITY" "$OVSDB_SERVER_WRAPPER" "$@" \
 213             || return 1
 214
 215         # Initialize database settings.
 216         ovs_vsctl -- init -- set Open_vSwitch . db-version="$schemaver" \
 217             || return 1
 218         set_system_ids || return 1
 219         if test X"$DELETE_BRIDGES" = Xyes; then
 220             for bridge in `ovs_vsctl list-br`; do
 221         ovs_vsctl del-br $bridge
 222             done
 223         fi
 224     fi
 225 }
 226
 227 start_forwarding () {
 228     check_force_cores
 229
 230     insert_mod_if_required || return 1
 231
 232     if daemon_is_running ovs-vswitchd; then
 233         log_success_msg "ovs-vswitchd is already running"
 234     else
 235         # Increase the limit on the number of open file descriptors.
 236         # ovs-vswitchd needs 16 per datapath, plus a few extra, so this
 237         # should allow for 256 (or more) bridges.
 238         ulimit -n 5000
 239
 240             # Start ovs-vswitchd.
 241             set ovs-vswitchd unix:"$DB_SOCK"
 242             set "$@" -vconsole:emer -vsyslog:err -vfile:info
 243             if test X"$MLOCKALL" != Xno; then
 244                 set "$@" --mlockall
 245             fi
 246             start_daemon "$OVS_VSWITCHD_PRIORITY" "$OVS_VSWITCHD_WRAPPER" "$@"
 247     fi
 248
 249     if daemon_is_running ovs-brcompatd; then
 250             log_success_msg "ovs-brcompatd is already running"
 251     elif test X"$BRCOMPAT" = Xyes; then
 252         set ovs-brcompatd
 253             set "$@" -vconsole:emer -vsyslog:err -vfile:info
 254             start_daemon "$OVS_BRCOMPATD_PRIORITY" "$OVS_BRCOMPATD_WRAPPER" "$@"
 255     fi
 256 }
 257
 258 ## ---- ##
 259 ## stop ##
 260 ## ---- ##
 261
 262 stop_ovsdb () {
 263     stop_daemon ovsdb-server
 264 }
 265
 266 stop_forwarding () {
 267     stop_daemon ovs-brcompatd
 268     stop_daemon ovs-vswitchd
 269 }
 270
 271 ## ----------------- ##
 272 ## force-reload-kmod ##
 273 ## ----------------- ##
 274
 275 internal_interfaces () {
 276     # Outputs a list of internal interfaces:
 277     #
 278     #   - There is an internal interface for every bridge, whether it
 279     #     has an Interface record or not and whether the Interface
 280     #     record's 'type' is properly set or not.
 281     #
 282     #   - There is an internal interface for each Interface record whose
 283     #     'type' is 'internal'.
 284     #
 285     # But ignore interfaces that don't really exist.
 286     for d in `(ovs_vsctl --bare \
 287                 -- --columns=name find Interface type=internal \
 288                     -- list-br) | sort -u`
 289     do
 290         if test -e "/sys/class/net/$d"; then
 291                 printf "%s " "$d"
 292             fi
 293     done
 294 }
 295
 296 save_flows () {
 297    if set X `ovs_vsctl list-br`; then
 298         shift
 299         if "$datadir/scripts/ovs-save" save-flows "$@" > "$script_flows"; then
 300             chmod +x "$script_flows"
 301             return 0
 302         fi
 303     fi
 304     script_flows=
 305     return 1
 306 }
 307
 308 save_interfaces () {
 309     "$datadir/scripts/ovs-save" save-interfaces ${ifaces} \
 310         > "${script_interfaces}"
 311 }
 312
 313 restore_flows () {
 314     [ -n "${script_flows}" ] && \
 315         action "Restoring saved flows" "${script_flows}"
 316 }
 317
 318 force_reload_kmod () {
 319     ifaces=`internal_interfaces`
 320     action "Detected internal interfaces: $ifaces" true
 321
 322     script_interfaces=`mktemp`
 323     script_flows=`mktemp`
 324     trap 'rm -f "${script_interfaces}" "${script_flows}" ' 0 1 2 13 15
 325
 326     action "Saving flows" save_flows
 327
 328     # Restart the database first, since a large database may take a
 329     # while to load, and we want to minimize forwarding disruption.
 330     stop_ovsdb
 331     start_ovsdb
 332
 333     stop_forwarding
 334
 335     if action "Saving interface configuration" save_interfaces; then
 336         :
 337     else
 338         log_warning_msg "Failed to save configuration, not replacing kernel module"
 339         start_forwarding
 340         exit 1
 341     fi
 342     chmod +x "$script_interfaces"
 343
 344     for dp in `ovs-dpctl dump-dps`; do
 345         action "Removing datapath: $dp" ovs-dpctl del-dp "$dp"
 346     done
 347
 348     # try both old and new names in case this is post upgrade
 349     if test -e /sys/module/brcompat_mod; then
 350         action "Removing brcompat module" rmmod brcompat_mod
 351     elif test -e /sys/module/brcompat; then
 352         action "Removing brcompat module" rmmod brcompat
 353     fi
 354     if test -e /sys/module/openvswitch_mod; then
 355         action "Removing openvswitch module" rmmod openvswitch_mod
 356     elif test -e /sys/module/openvswitch; then
 357         action "Removing openvswitch module" rmmod openvswitch
 358     fi
 359
 360     start_forwarding
 361
 362     restore_flows
 363
 364     action "Restoring interface configuration" "$script_interfaces"
 365     rc=$?
 366     if test $rc = 0; then
 367         level=debug
 368     else
 369         level=err
 370     fi
 371     log="logger -p daemon.$level -t ovs-save"
 372     $log "force-reload-kmod interface restore script exited with status $rc:"
 373     $log -f "$script_interfaces"
 374
 375     "$datadir/scripts/ovs-check-dead-ifs"
 376 }
 377
 378 ## ------- ##
 379 ## restart ##
 380 ## ------- ##
 381
 382 restart () {
 383     if daemon_is_running ovsdb-server && daemon_is_running ovs-vswitchd; then
 384         script_flows=`mktemp`
 385         trap 'rm -f "${script_flows}"' 0 1 2 13 15
 386
 387         action "Saving flows" save_flows
 388     fi
 389
 390     # Restart the database first, since a large database may take a
 391     # while to load, and we want to minimize forwarding disruption.
 392     stop_ovsdb
 393     start_ovsdb
 394
 395     stop_forwarding
 396     start_forwarding
 397
 398     # Restore the saved flows. Do not return error if restore fails.
 399     restore_flows || true
 400 }
 401
 402 ## --------------- ##
 403 ## enable-protocol ##
 404 ## --------------- ##
 405
 406 enable_protocol () {
 407     # Translate the protocol name to a number, because "iptables -n -L" prints
 408     # some protocols by name (despite the -n) and therefore we need to look for
 409     # both forms.
 410     #
 411     # (iptables -S output is more uniform but old iptables doesn't have it.)
 412     protonum=`grep "^$PROTOCOL[         ]" /etc/protocols | awk '{print $2}'`
 413     if expr X"$protonum" : X'[0-9]\{1,\}$' > /dev/null; then :; else
 414         log_failure_msg "unknown protocol $PROTOCOL"
 415         return 1
 416     fi
 417
 418     name=$PROTOCOL
 419     match="(\$2 == \"$PROTOCOL\" || \$2 == $protonum)"
 420     insert="iptables -I INPUT -p $PROTOCOL"
 421     if test X"$DPORT" != X; then
 422         name="$name to port $DPORT"
 423         match="$match && /dpt:$DPORT/"
 424         insert="$insert --dport $DPORT"
 425     fi
 426     if test X"$SPORT" != X; then
 427         name="$name from port $SPORT"
 428         match="$match && /spt:$SPORT/"
 429         insert="$insert --sport $SPORT"
 430     fi
 431     insert="$insert -j ACCEPT"
 432
 433     if (iptables -n -L INPUT) >/dev/null 2>&1; then
 434         if iptables -n -L INPUT | awk "$match { n++ } END { exit n == 0 }"
 435         then
 436             # There's already a rule for this protocol.  Don't override it.
 437             log_success_msg "iptables already has a rule for $name, not explicitly enabling"
 438         else
 439             action "Enabling $name with iptables" $insert
 440         fi
 441     elif (iptables --version) >/dev/null 2>&1; then
 442         action "cannot list iptables rules, not adding a rule for $name"
 443     else
 444         action "iptables binary not installed, not adding a rule for $name"
 445     fi
 446 }
 447
 448 ## ---- ##
 449 ## main ##
 450 ## ---- ##
 451
 452 set_defaults () {
 453     SYSTEM_ID=
 454
 455     DELETE_BRIDGES=no
 456     BRCOMPAT=no
 457
 458     DAEMON_CWD=/
 459     FORCE_COREFILES=yes
 460     MLOCKALL=yes
 461     OVSDB_SERVER_PRIORITY=-10
 462     OVS_VSWITCHD_PRIORITY=-10
 463     OVS_BRCOMPATD_PRIORITY=-10
 464     OVSDB_SERVER_WRAPPER=
 465     OVS_VSWITCHD_WRAPPER=
 466     OVS_BRCOMPATD_WRAPPER=
 467
 468     DB_FILE=$dbdir/conf.db
 469     DB_SOCK=$rundir/db.sock
 470     DB_SCHEMA=$datadir/vswitch.ovsschema
 471     EXTRA_DBS=
 472
 473     PROTOCOL=gre
 474     DPORT=
 475     SPORT=
 476
 477     type_file=$etcdir/system-type.conf
 478     version_file=$etcdir/system-version.conf
 479
 480     if test -e "$type_file" ; then
 481         SYSTEM_TYPE=`cat $type_file`
 482         SYSTEM_VERSION=`cat $version_file`
 483     elif (lsb_release --id) >/dev/null 2>&1; then
 484         SYSTEM_TYPE=`lsb_release --id -s`
 485         system_release=`lsb_release --release -s`
 486         system_codename=`lsb_release --codename -s`
 487         SYSTEM_VERSION="${system_release}-${system_codename}"
 488     else
 489         SYSTEM_TYPE=unknown
 490         SYSTEM_VERSION=unknown
 491     fi
 492 }
 493
 494 usage () {
 495     set_defaults
 496     cat <<EOF
 497 $0: controls Open vSwitch daemons
 498 usage: $0 [OPTIONS] COMMAND
 499
 500 This program is intended to be invoked internally by Open vSwitch startup
 501 scripts.  System administrators should not normally invoke it directly.
 502
 503 Commands:
 504   start              start Open vSwitch daemons
 505   stop               stop Open vSwitch daemons
 506   restart            stop and start Open vSwitch daemons
 507   status             check whether Open vSwitch daemons are running
 508   version            print versions of Open vSwitch daemons
 509   load-kmod          insert modules if not already present
 510   force-reload-kmod  save OVS network device state, stop OVS, unload kernel
 511                      module, reload kernel module, start OVS, restore state
 512   enable-protocol    enable protocol specified in options with iptables
 513   help               display this help message
 514
 515 One of the following options is required for "start", "restart" and "force-reload-kmod":
 516   --system-id=UUID   set specific ID to uniquely identify this system
 517   --system-id=random  use a random but persistent UUID to identify this system
 518
 519 Other important options for "start", "restart" and "force-reload-kmod":
 520   --system-type=TYPE  set system type (e.g. "XenServer")
 521   --system-version=VERSION  set system version (e.g. "5.6.100-39265p")
 522   --external-id="key=value"
 523                      add given key-value pair to Open_vSwitch external-ids
 524   --delete-bridges   delete all bridges just before starting ovs-vswitchd
 525
 526 Less important options for "start", "restart" and "force-reload-kmod":
 527   --daemon-cwd=DIR               set working dir for OVS daemons (default: $DAEMON_CWD)
 528   --no-force-corefiles           do not force on core dumps for OVS daemons
 529   --no-mlockall                  do not lock all of ovs-vswitchd into memory
 530   --ovsdb-server-priority=NICE   set ovsdb-server's niceness (default: $OVSDB_SERVER_PRIORITY)
 531   --ovs-vswitchd-priority=NICE   set ovs-vswitchd's niceness (default: $OVS_VSWITCHD_PRIORITY)
 532   --ovs-brcompatd-priority=NICE  set ovs-brcompatd's niceness (default: $OVS_BRCOMPATD_PRIORITY)
 533
 534 Debugging options for "start", "restart" and "force-reload-kmod":
 535   --ovsdb-server-wrapper=WRAPPER
 536   --ovs-vswitchd-wrapper=WRAPPER
 537   --ovs-vswitchd-wrapper=WRAPPER
 538      run specified daemon under WRAPPER (either 'valgrind' or 'strace')
 539
 540 Options for "start", "restart", "force-reload-kmod", "load-kmod", "status", and "version":
 541   --brcompat         enable Linux bridge compatibility module and daemon
 542
 543 File location options:
 544   --db-file=FILE     database file name (default: $DB_FILE)
 545   --db-sock=SOCKET   JSON-RPC socket name (default: $DB_SOCK)
 546   --db-schema=FILE   database schema file name (default: $DB_SCHEMA)
 547
 548 Options for "enable-protocol":
 549   --protocol=PROTOCOL  protocol to enable with iptables (default: gre)
 550   --sport=PORT       source port to match (for tcp or udp protocol)
 551   --dport=PORT       ddestination port to match (for tcp or udp protocol)
 552
 553 Other options:
 554   -h, --help                  display this help message
 555   -V, --version               display version information
 556
 557 Default directories with "configure" option and environment variable override:
 558   logs: @LOGDIR@ (--with-logdir, OVS_LOGDIR)
 559   pidfiles and sockets: @RUNDIR@ (--with-rundir, OVS_RUNDIR)
 560   conf.db: @DBDIR@ (--with-dbdir, OVS_DBDIR)
 561   system configuration: @sysconfdir@ (--sysconfdir, OVS_SYSCONFDIR)
 562   data files: @pkgdatadir@ (--pkgdatadir, OVS_PKGDATADIR)
 563   user binaries: @bindir@ (--bindir, OVS_BINDIR)
 564   system binaries: @sbindir@ (--sbindir, OVS_SBINDIR)
 565
 566 Please report bugs to bugs@openvswitch.org (see REPORTING-BUGS for details).
 567 EOF
 568
 569     exit 0
 570 }
 571
 572 set_option () {
 573     var=`echo "$option" | tr abcdefghijklmnopqrstuvwxyz- ABCDEFGHIJKLMNOPQRSTUVWXYZ_`
 574     eval set=\${$var+yes}
 575     eval old_value=\$$var
 576     if test X$set = X || \
 577         (test $type = bool && \
 578         test X"$old_value" != Xno && test X"$old_value" != Xyes); then
 579         echo >&2 "$0: unknown option \"$arg\" (use --help for help)"
 580         return
 581     fi
 582     eval $var=\$value
 583 }
 584
 585 daemons () {
 586     echo ovsdb-server ovs-vswitchd
 587     if test X"$BRCOMPAT" = Xyes; then
 588         echo ovs-brcompatd
 589     fi
 590 }
 591
 592 set_defaults
 593 extra_ids=
 594 command=
 595 for arg
 596 do
 597     case $arg in
 598         -h | --help)
 599             usage
 600             ;;
 601         -V | --version)
 602             echo "$0 (Open vSwitch) $VERSION"
 603             exit 0
 604             ;;
 605         --external-id=*)
 606             value=`expr X"$arg" : 'X[^=]*=\(.*\)'`
 607             case $value in
 608                 *=*)
 609                     extra_ids="$extra_ids external-ids:$value"
 610                     ;;
 611                 *)
 612                     echo >&2 "$0: --external-id argument not in the form \"key=value\""
 613                     exit 1
 614                     ;;
 615             esac
 616             ;;
 617         --[a-z]*=*)
 618             option=`expr X"$arg" : 'X--\([^=]*\)'`
 619             value=`expr X"$arg" : 'X[^=]*=\(.*\)'`
 620             type=string
 621             set_option
 622             ;;
 623         --no-[a-z]*)
 624             option=`expr X"$arg" : 'X--no-\(.*\)'`
 625             value=no
 626             type=bool
 627             set_option
 628             ;;
 629         --[a-z]*)
 630             option=`expr X"$arg" : 'X--\(.*\)'`
 631             value=yes
 632             type=bool
 633             set_option
 634             ;;
 635         -*)
 636             echo >&2 "$0: unknown option \"$arg\" (use --help for help)"
 637             exit 1
 638             ;;
 639         *)
 640             if test X"$command" = X; then
 641                 command=$arg
 642             else
 643                 echo >&2 "$0: exactly one non-option argument required (use --help for help)"
 644                 exit 1
 645             fi
 646             ;;
 647     esac
 648 done
 649 case $command in
 650     start)
 651         start_ovsdb
 652         start_forwarding
 653         ;;
 654     stop)
 655         stop_forwarding
 656         stop_ovsdb
 657         ;;
 658     restart)
 659         restart
 660         ;;
 661     status)
 662         rc=0
 663         for daemon in `daemons`; do
 664             daemon_status $daemon || rc=$?
 665         done
 666         exit $rc
 667         ;;
 668     version)
 669         for daemon in `daemons`; do
 670             $daemon --version
 671         done
 672         ;;
 673     force-reload-kmod)
 674             force_reload_kmod
 675         ;;
 676     load-kmod)
 677         insert_mod_if_required
 678         ;;
 679     enable-protocol)
 680         enable_protocol
 681         ;;
 682     help)
 683         usage
 684         ;;
 685     '')
 686         echo >&2 "$0: missing command name (use --help for help)"
 687         exit 1
 688         ;;
 689     *)
 690         echo >&2 "$0: unknown command \"$command\" (use --help for help)"
 691         exit 1
 692         ;;
 693 esac