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:$dir ;;
  26     esac
  27 done
  28
  29 ## ----- ##
  30 ## start ##
  31 ## ----- ##
  32
  33 restore_datapaths () {
  34     [ -n "${script_datapaths}" ] && \
  35         action "Restoring datapath configuration" "${script_datapaths}"
  36 }
  37
  38 insert_openvswitch_mod_if_required () {
  39     # If openvswitch is already loaded then we're done.
  40     test -e /sys/module/openvswitch -o -e /sys/module/openvswitch_mod && \
  41      return 0
  42
  43     # Load openvswitch.  If that's successful then we're done.
  44     if action "Inserting openvswitch module" modprobe openvswitch; then
  45         restore_datapaths
  46         return 0
  47     fi
  48
  49     # If the bridge module is loaded, then that might be blocking
  50     # openvswitch.  Try to unload it, if there are no bridges.
  51     test -e /sys/module/bridge || return 1
  52     bridges=`echo /sys/class/net/*/bridge | sed 's,/sys/class/net/,,g;s,/bridge,,g'`
  53     if test "$bridges" != "*"; then
  54         log_warning_msg "not removing bridge module because bridges exist ($bridges)"
  55         return 1
  56     fi
  57     action "removing bridge module" rmmod bridge || return 1
  58
  59     # Try loading openvswitch again.
  60     action "Inserting openvswitch module" modprobe openvswitch
  61     restore_datapaths
  62 }
  63
  64 insert_brcompat_mod_if_required () {
  65     if test -e /sys/module/bridge; then
  66         log_warning_msg "bridge module is loaded, not loading brcompat"
  67         return 1
  68     fi
  69     test -e /sys/module/brcompat -o -e /sys/module/brcompat_mod && return 0
  70     action "Inserting brcompat module" modprobe brcompat
  71 }
  72
  73 insert_mod_if_required () {
  74     insert_openvswitch_mod_if_required || return 1
  75     if test X"$BRCOMPAT" = Xyes; then
  76         if insert_brcompat_mod_if_required; then
  77             :
  78         else
  79             log_warning_msg "could not load brcompat module, disabling bridge compatibility"
  80             BRCOMPAT=no
  81         fi
  82     fi
  83 }
  84
  85 ovs_vsctl () {
  86     ovs-vsctl --no-wait --timeout=5 "$@"
  87 }
  88
  89 ovsdb_tool () {
  90     ovsdb-tool -vconsole:off "$@"
  91 }
  92
  93 create_db () {
  94     action "Creating empty database $DB_FILE" ovsdb_tool create "$DB_FILE" "$DB_SCHEMA"
  95 }
  96
  97 upgrade_db () {
  98     schemaver=`ovsdb_tool schema-version "$DB_SCHEMA"`
  99     if test ! -e "$DB_FILE"; then
 100         log_warning_msg "$DB_FILE does not exist"
 101         install -d -m 755 -o root -g root `dirname $DB_FILE`
 102         create_db
 103     elif test X"`ovsdb_tool needs-conversion "$DB_FILE" "$DB_SCHEMA"`" != Xno; then
 104         # Back up the old version.
 105         version=`ovsdb_tool db-version "$DB_FILE"`
 106         cksum=`ovsdb_tool db-cksum "$DB_FILE" | awk '{print $1}'`
 107         backup=$DB_FILE.backup$version-$cksum
 108         action "Backing up database to $backup" cp "$DB_FILE" "$backup" || return 1
 109
 110         # Compact database.  This is important if the old schema did not enable
 111         # garbage collection (i.e. if it did not have any tables with "isRoot":
 112         # true) but the new schema does.  In that situation the old database
 113         # may contain a transaction that creates a record followed by a
 114         # transaction that creates the first use of the record.  Replaying that
 115         # series of transactions against the new database schema (as "convert"
 116         # does) would cause the record to be dropped by the first transaction,
 117         # then the second transaction would cause a referential integrity
 118         # failure (for a strong reference).
 119         #
 120         # Errors might occur on an Open vSwitch downgrade if ovsdb-tool doesn't
 121         # understand some feature of the schema used in the OVSDB version that
 122         # we're downgrading from, so we don't give up on error.
 123         action "Compacting database" ovsdb_tool compact "$DB_FILE"
 124
 125         # Upgrade or downgrade schema.
 126         if action "Converting database schema" ovsdb_tool convert "$DB_FILE" "$DB_SCHEMA"; then
 127             :
 128         else
 129             log_warning_msg "Schema conversion failed, using empty database instead"
 130             rm -f "$DB_FILE"
 131             create_db
 132         fi
 133     fi
 134 }
 135
 136 set_system_ids () {
 137     set ovs_vsctl set Open_vSwitch .
 138
 139     OVS_VERSION=`ovs-vswitchd --version | sed 's/.*) //;1q'`
 140     set "$@" ovs-version="$OVS_VERSION"
 141
 142     case $SYSTEM_ID in
 143         random)
 144             id_file=$etcdir/system-id.conf
 145             uuid_file=$etcdir/install_uuid.conf
 146             if test -e "$id_file"; then
 147                 SYSTEM_ID=`cat "$id_file"`
 148             elif test -e "$uuid_file"; then
 149                 # Migrate from old file name.
 150                 . "$uuid_file"
 151                 SYSTEM_ID=$INSTALLATION_UUID
 152                 echo "$SYSTEM_ID" > "$id_file"
 153             elif SYSTEM_ID=`uuidgen`; then
 154                 echo "$SYSTEM_ID" > "$id_file"
 155             else
 156                 log_failure_msg "missing uuidgen, could not generate system ID"
 157             fi
 158             ;;
 159
 160         '')
 161             log_failure_msg "system ID not configured, please use --system-id"
 162             ;;
 163
 164         *)
 165             ;;
 166     esac
 167     set "$@" external-ids:system-id="\"$SYSTEM_ID\""
 168
 169     if test X"$SYSTEM_TYPE" != X; then
 170         set "$@" system-type="\"$SYSTEM_TYPE\""
 171     else
 172         log_failure_msg "no default system type, please use --system-type"
 173     fi
 174
 175     if test X"$SYSTEM_VERSION" != X; then
 176         set "$@" system-version="\"$SYSTEM_VERSION\""
 177     else
 178         log_failure_msg "no default system version, please use --system-version"
 179     fi
 180
 181     action "Configuring Open vSwitch system IDs" "$@" $extra_ids
 182 }
 183
 184 check_force_cores () {
 185     if test X"$FORCE_COREFILES" = Xyes; then
 186         ulimit -Sc 67108864
 187     fi
 188 }
 189
 190 start_ovsdb () {
 191     check_force_cores
 192
 193     if daemon_is_running ovsdb-server; then
 194         log_success_msg "ovsdb-server is already running"
 195     else
 196         # Create initial database or upgrade database schema.
 197         upgrade_db || return 1
 198
 199         # Start ovsdb-server.
 200         set ovsdb-server "$DB_FILE"
 201         for db in $EXTRA_DBS; do
 202             case $db in
 203                 /*) ;;
 204                 *) db=$dbdir/$db ;;
 205             esac
 206
 207             if test ! -f "$db"; then
 208                 log_warning_msg "$db (from \$EXTRA_DBS) does not exist."
 209             elif ovsdb-tool db-version "$db" >/dev/null; then
 210                 set "$@" "$db"
 211             else
 212                 log_warning_msg "$db (from \$EXTRA_DBS) cannot be read as a database (see error message above)"
 213             fi
 214         done
 215         set "$@" -vconsole:emer -vsyslog:err -vfile:info
 216         set "$@" --remote=punix:"$DB_SOCK"
 217         set "$@" --remote=db:Open_vSwitch,Open_vSwitch,manager_options
 218         set "$@" --private-key=db:Open_vSwitch,SSL,private_key
 219         set "$@" --certificate=db:Open_vSwitch,SSL,certificate
 220         set "$@" --bootstrap-ca-cert=db:Open_vSwitch,SSL,ca_cert
 221         start_daemon "$OVSDB_SERVER_PRIORITY" "$OVSDB_SERVER_WRAPPER" "$@" \
 222             || return 1
 223
 224         # Initialize database settings.
 225         ovs_vsctl -- init -- set Open_vSwitch . db-version="$schemaver" \
 226             || return 1
 227         set_system_ids || return 1
 228         if test X"$DELETE_BRIDGES" = Xyes; then
 229             for bridge in `ovs_vsctl list-br`; do
 230         ovs_vsctl del-br $bridge
 231             done
 232         fi
 233     fi
 234 }
 235
 236 start_forwarding () {
 237     check_force_cores
 238
 239     insert_mod_if_required || return 1
 240
 241     if daemon_is_running ovs-vswitchd; then
 242         log_success_msg "ovs-vswitchd is already running"
 243     else
 244         # Increase the limit on the number of open file descriptors.
 245         # ovs-vswitchd needs 16 per datapath, plus a few extra, so this
 246         # should allow for 256 (or more) bridges.
 247         ulimit -n 5000
 248
 249             # Start ovs-vswitchd.
 250             set ovs-vswitchd unix:"$DB_SOCK"
 251             set "$@" -vconsole:emer -vsyslog:err -vfile:info
 252             if test X"$MLOCKALL" != Xno; then
 253                 set "$@" --mlockall
 254             fi
 255             start_daemon "$OVS_VSWITCHD_PRIORITY" "$OVS_VSWITCHD_WRAPPER" "$@"
 256     fi
 257
 258     if daemon_is_running ovs-brcompatd; then
 259             log_success_msg "ovs-brcompatd is already running"
 260     elif test X"$BRCOMPAT" = Xyes; then
 261         set ovs-brcompatd
 262             set "$@" -vconsole:emer -vsyslog:err -vfile:info
 263             start_daemon "$OVS_BRCOMPATD_PRIORITY" "$OVS_BRCOMPATD_WRAPPER" "$@"
 264     fi
 265 }
 266
 267 ## ---- ##
 268 ## stop ##
 269 ## ---- ##
 270
 271 stop_ovsdb () {
 272     stop_daemon ovsdb-server
 273 }
 274
 275 stop_forwarding () {
 276     stop_daemon ovs-brcompatd
 277     stop_daemon ovs-vswitchd
 278 }
 279
 280 ## ----------------- ##
 281 ## force-reload-kmod ##
 282 ## ----------------- ##
 283
 284 internal_interfaces () {
 285     # Outputs a list of internal interfaces:
 286     #
 287     #   - There is an internal interface for every bridge, whether it
 288     #     has an Interface record or not and whether the Interface
 289     #     record's 'type' is properly set or not.
 290     #
 291     #   - There is an internal interface for each Interface record whose
 292     #     'type' is 'internal'.
 293     #
 294     # But ignore interfaces that don't really exist.
 295     for d in `(ovs_vsctl --bare \
 296                 -- --columns=name find Interface type=internal \
 297                     -- list-br) | sort -u`
 298     do
 299         if test -e "/sys/class/net/$d"; then
 300                 printf "%s " "$d"
 301             fi
 302     done
 303 }
 304
 305 save_flows () {
 306    if set X `ovs_vsctl list-br`; then
 307         shift
 308         if "$datadir/scripts/ovs-save" save-flows "$@" > "$script_flows"; then
 309             chmod +x "$script_flows"
 310             return 0
 311         fi
 312     fi
 313     script_flows=
 314     return 1
 315 }
 316
 317 save_interfaces () {
 318     "$datadir/scripts/ovs-save" save-interfaces ${ifaces} \
 319         > "${script_interfaces}"
 320 }
 321
 322 save_datapaths () {
 323     "$datadir/scripts/ovs-save" save-datapaths ${datapaths} \
 324         > "${script_datapaths}"
 325 }
 326
 327 restore_flows () {
 328     [ -n "${script_flows}" ] && \
 329         action "Restoring saved flows" "${script_flows}"
 330 }
 331
 332 force_reload_kmod () {
 333     ifaces=`internal_interfaces`
 334     action "Detected internal interfaces: $ifaces" true
 335
 336     script_interfaces=`mktemp`
 337     script_datapaths=`mktemp`
 338     script_flows=`mktemp`
 339     trap 'rm -f "${script_interfaces}" "${script_flows}" \
 340         "${script_datapaths}"' 0 1 2 13 15
 341
 342     action "Saving flows" save_flows
 343
 344     # Restart the database first, since a large database may take a
 345     # while to load, and we want to minimize forwarding disruption.
 346     stop_ovsdb
 347     start_ovsdb
 348
 349     stop_forwarding
 350
 351     if action "Saving interface configuration" save_interfaces; then
 352         :
 353     else
 354         log_warning_msg "Failed to save configuration, not replacing kernel module"
 355         start_forwarding
 356         exit 1
 357     fi
 358     chmod +x "$script_interfaces"
 359
 360     datapaths=`ovs-dpctl dump-dps`
 361     if action "Saving datapath configuration" save_datapaths; then
 362         chmod +x "${script_datapaths}"
 363     else
 364         log_warning_msg "Failed to save datapath configuration. The port\
 365                          numbers may change after the restart"
 366         script_datapaths=""
 367     fi
 368
 369     for dp in ${datapaths}; do
 370         action "Removing datapath: $dp" ovs-dpctl del-dp "$dp"
 371     done
 372
 373     # try both old and new names in case this is post upgrade
 374     if test -e /sys/module/brcompat_mod; then
 375         action "Removing brcompat module" rmmod brcompat_mod
 376     elif test -e /sys/module/brcompat; then
 377         action "Removing brcompat module" rmmod brcompat
 378     fi
 379     if test -e /sys/module/openvswitch_mod; then
 380         action "Removing openvswitch module" rmmod openvswitch_mod
 381     elif test -e /sys/module/openvswitch; then
 382         action "Removing openvswitch module" rmmod openvswitch
 383     fi
 384
 385     start_forwarding
 386
 387     restore_flows
 388
 389     action "Restoring interface configuration" "$script_interfaces"
 390     rc=$?
 391     if test $rc = 0; then
 392         level=debug
 393     else
 394         level=err
 395     fi
 396     log="logger -p daemon.$level -t ovs-save"
 397     $log "force-reload-kmod interface restore script exited with status $rc:"
 398     $log -f "$script_interfaces"
 399
 400     "$datadir/scripts/ovs-check-dead-ifs"
 401 }
 402
 403 ## ------- ##
 404 ## restart ##
 405 ## ------- ##
 406
 407 restart () {
 408     if daemon_is_running ovsdb-server && daemon_is_running ovs-vswitchd; then
 409         script_flows=`mktemp`
 410         trap 'rm -f "${script_flows}"' 0 1 2 13 15
 411
 412         action "Saving flows" save_flows
 413     fi
 414
 415     # Restart the database first, since a large database may take a
 416     # while to load, and we want to minimize forwarding disruption.
 417     stop_ovsdb
 418     start_ovsdb
 419
 420     stop_forwarding
 421     start_forwarding
 422
 423     restore_flows
 424 }
 425
 426 ## --------------- ##
 427 ## enable-protocol ##
 428 ## --------------- ##
 429
 430 enable_protocol () {
 431     # Translate the protocol name to a number, because "iptables -n -L" prints
 432     # some protocols by name (despite the -n) and therefore we need to look for
 433     # both forms.
 434     #
 435     # (iptables -S output is more uniform but old iptables doesn't have it.)
 436     protonum=`grep "^$PROTOCOL[         ]" /etc/protocols | awk '{print $2}'`
 437     if expr X"$protonum" : X'[0-9]\{1,\}$' > /dev/null; then :; else
 438         log_failure_msg "unknown protocol $PROTOCOL"
 439         return 1
 440     fi
 441
 442     name=$PROTOCOL
 443     match="(\$2 == \"$PROTOCOL\" || \$2 == $protonum)"
 444     insert="iptables -I INPUT -p $PROTOCOL"
 445     if test X"$DPORT" != X; then
 446         name="$name to port $DPORT"
 447         match="$match && /dpt:$DPORT/"
 448         insert="$insert --dport $DPORT"
 449     fi
 450     if test X"$SPORT" != X; then
 451         name="$name from port $SPORT"
 452         match="$match && /spt:$SPORT/"
 453         insert="$insert --sport $SPORT"
 454     fi
 455     insert="$insert -j ACCEPT"
 456
 457     if (iptables -n -L INPUT) >/dev/null 2>&1; then
 458         if iptables -n -L INPUT | awk "$match { n++ } END { exit n == 0 }"
 459         then
 460             # There's already a rule for this protocol.  Don't override it.
 461             log_success_msg "iptables already has a rule for $name, not explicitly enabling"
 462         else
 463             action "Enabling $name with iptables" $insert
 464         fi
 465     elif (iptables --version) >/dev/null 2>&1; then
 466         action "cannot list iptables rules, not adding a rule for $name"
 467     else
 468         action "iptables binary not installed, not adding a rule for $name"
 469     fi
 470 }
 471
 472 ## ---- ##
 473 ## main ##
 474 ## ---- ##
 475
 476 set_defaults () {
 477     SYSTEM_ID=
 478
 479     DELETE_BRIDGES=no
 480     BRCOMPAT=no
 481
 482     DAEMON_CWD=/
 483     FORCE_COREFILES=yes
 484     MLOCKALL=yes
 485     OVSDB_SERVER_PRIORITY=-10
 486     OVS_VSWITCHD_PRIORITY=-10
 487     OVS_BRCOMPATD_PRIORITY=-10
 488     OVSDB_SERVER_WRAPPER=
 489     OVS_VSWITCHD_WRAPPER=
 490     OVS_BRCOMPATD_WRAPPER=
 491
 492     DB_FILE=$dbdir/conf.db
 493     DB_SOCK=$rundir/db.sock
 494     DB_SCHEMA=$datadir/vswitch.ovsschema
 495     EXTRA_DBS=
 496
 497     PROTOCOL=gre
 498     DPORT=
 499     SPORT=
 500
 501     type_file=$etcdir/system-type.conf
 502     version_file=$etcdir/system-version.conf
 503
 504     if test -e "$type_file" ; then
 505         SYSTEM_TYPE=`cat $type_file`
 506         SYSTEM_VERSION=`cat $version_file`
 507     elif (lsb_release --id) >/dev/null 2>&1; then
 508         SYSTEM_TYPE=`lsb_release --id -s`
 509         system_release=`lsb_release --release -s`
 510         system_codename=`lsb_release --codename -s`
 511         SYSTEM_VERSION="${system_release}-${system_codename}"
 512     else
 513         SYSTEM_TYPE=unknown
 514         SYSTEM_VERSION=unknown
 515     fi
 516 }
 517
 518 usage () {
 519     set_defaults
 520     cat <<EOF
 521 $0: controls Open vSwitch daemons
 522 usage: $0 [OPTIONS] COMMAND
 523
 524 This program is intended to be invoked internally by Open vSwitch startup
 525 scripts.  System administrators should not normally invoke it directly.
 526
 527 Commands:
 528   start              start Open vSwitch daemons
 529   stop               stop Open vSwitch daemons
 530   restart            stop and start Open vSwitch daemons
 531   status             check whether Open vSwitch daemons are running
 532   version            print versions of Open vSwitch daemons
 533   load-kmod          insert modules if not already present
 534   force-reload-kmod  save OVS network device state, stop OVS, unload kernel
 535                      module, reload kernel module, start OVS, restore state
 536   enable-protocol    enable protocol specified in options with iptables
 537   help               display this help message
 538
 539 One of the following options is required for "start", "restart" and "force-reload-kmod":
 540   --system-id=UUID   set specific ID to uniquely identify this system
 541   --system-id=random  use a random but persistent UUID to identify this system
 542
 543 Other important options for "start", "restart" and "force-reload-kmod":
 544   --system-type=TYPE  set system type (e.g. "XenServer")
 545   --system-version=VERSION  set system version (e.g. "5.6.100-39265p")
 546   --external-id="key=value"
 547                      add given key-value pair to Open_vSwitch external-ids
 548   --delete-bridges   delete all bridges just before starting ovs-vswitchd
 549
 550 Less important options for "start", "restart" and "force-reload-kmod":
 551   --daemon-cwd=DIR               set working dir for OVS daemons (default: $DAEMON_CWD)
 552   --no-force-corefiles           do not force on core dumps for OVS daemons
 553   --no-mlockall                  do not lock all of ovs-vswitchd into memory
 554   --ovsdb-server-priority=NICE   set ovsdb-server's niceness (default: $OVSDB_SERVER_PRIORITY)
 555   --ovs-vswitchd-priority=NICE   set ovs-vswitchd's niceness (default: $OVS_VSWITCHD_PRIORITY)
 556   --ovs-brcompatd-priority=NICE  set ovs-brcompatd's niceness (default: $OVS_BRCOMPATD_PRIORITY)
 557
 558 Debugging options for "start", "restart" and "force-reload-kmod":
 559   --ovsdb-server-wrapper=WRAPPER
 560   --ovs-vswitchd-wrapper=WRAPPER
 561   --ovs-vswitchd-wrapper=WRAPPER
 562      run specified daemon under WRAPPER (either 'valgrind' or 'strace')
 563
 564 Options for "start", "restart", "force-reload-kmod", "load-kmod", "status", and "version":
 565   --brcompat         enable Linux bridge compatibility module and daemon
 566
 567 File location options:
 568   --db-file=FILE     database file name (default: $DB_FILE)
 569   --db-sock=SOCKET   JSON-RPC socket name (default: $DB_SOCK)
 570   --db-schema=FILE   database schema file name (default: $DB_SCHEMA)
 571
 572 Options for "enable-protocol":
 573   --protocol=PROTOCOL  protocol to enable with iptables (default: gre)
 574   --sport=PORT       source port to match (for tcp or udp protocol)
 575   --dport=PORT       ddestination port to match (for tcp or udp protocol)
 576
 577 Other options:
 578   -h, --help                  display this help message
 579   -V, --version               display version information
 580
 581 Default directories with "configure" option and environment variable override:
 582   logs: @LOGDIR@ (--with-logdir, OVS_LOGDIR)
 583   pidfiles and sockets: @RUNDIR@ (--with-rundir, OVS_RUNDIR)
 584   conf.db: @DBDIR@ (--with-dbdir, OVS_DBDIR)
 585   system configuration: @sysconfdir@ (--sysconfdir, OVS_SYSCONFDIR)
 586   data files: @pkgdatadir@ (--pkgdatadir, OVS_PKGDATADIR)
 587   user binaries: @bindir@ (--bindir, OVS_BINDIR)
 588   system binaries: @sbindir@ (--sbindir, OVS_SBINDIR)
 589
 590 Please report bugs to bugs@openvswitch.org (see REPORTING-BUGS for details).
 591 EOF
 592
 593     exit 0
 594 }
 595
 596 set_option () {
 597     var=`echo "$option" | tr abcdefghijklmnopqrstuvwxyz- ABCDEFGHIJKLMNOPQRSTUVWXYZ_`
 598     eval set=\${$var+yes}
 599     eval old_value=\$$var
 600     if test X$set = X || \
 601         (test $type = bool && \
 602         test X"$old_value" != Xno && test X"$old_value" != Xyes); then
 603         echo >&2 "$0: unknown option \"$arg\" (use --help for help)"
 604         return
 605     fi
 606     eval $var=\$value
 607 }
 608
 609 daemons () {
 610     echo ovsdb-server ovs-vswitchd
 611     if test X"$BRCOMPAT" = Xyes; then
 612         echo ovs-brcompatd
 613     fi
 614 }
 615
 616 set_defaults
 617 extra_ids=
 618 command=
 619 for arg
 620 do
 621     case $arg in
 622         -h | --help)
 623             usage
 624             ;;
 625         -V | --version)
 626             echo "$0 (Open vSwitch) $VERSION"
 627             exit 0
 628             ;;
 629         --external-id=*)
 630             value=`expr X"$arg" : 'X[^=]*=\(.*\)'`
 631             case $value in
 632                 *=*)
 633                     extra_ids="$extra_ids external-ids:$value"
 634                     ;;
 635                 *)
 636                     echo >&2 "$0: --external-id argument not in the form \"key=value\""
 637                     exit 1
 638                     ;;
 639             esac
 640             ;;
 641         --[a-z]*=*)
 642             option=`expr X"$arg" : 'X--\([^=]*\)'`
 643             value=`expr X"$arg" : 'X[^=]*=\(.*\)'`
 644             type=string
 645             set_option
 646             ;;
 647         --no-[a-z]*)
 648             option=`expr X"$arg" : 'X--no-\(.*\)'`
 649             value=no
 650             type=bool
 651             set_option
 652             ;;
 653         --[a-z]*)
 654             option=`expr X"$arg" : 'X--\(.*\)'`
 655             value=yes
 656             type=bool
 657             set_option
 658             ;;
 659         -*)
 660             echo >&2 "$0: unknown option \"$arg\" (use --help for help)"
 661             exit 1
 662             ;;
 663         *)
 664             if test X"$command" = X; then
 665                 command=$arg
 666             else
 667                 echo >&2 "$0: exactly one non-option argument required (use --help for help)"
 668                 exit 1
 669             fi
 670             ;;
 671     esac
 672 done
 673 case $command in
 674     start)
 675         start_ovsdb
 676         start_forwarding
 677         ;;
 678     stop)
 679         stop_forwarding
 680         stop_ovsdb
 681         ;;
 682     restart)
 683         restart
 684         ;;
 685     status)
 686         rc=0
 687         for daemon in `daemons`; do
 688             daemon_status $daemon || rc=$?
 689         done
 690         exit $rc
 691         ;;
 692     version)
 693         for daemon in `daemons`; do
 694             $daemon --version
 695         done
 696         ;;
 697     force-reload-kmod)
 698             force_reload_kmod
 699         ;;
 700     load-kmod)
 701         insert_mod_if_required
 702         ;;
 703     enable-protocol)
 704         enable_protocol
 705         ;;
 706     help)
 707         usage
 708         ;;
 709     '')
 710         echo >&2 "$0: missing command name (use --help for help)"
 711         exit 1
 712         ;;
 713     *)
 714         echo >&2 "$0: unknown command \"$command\" (use --help for help)"
 715         exit 1
 716         ;;
 717 esac