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Dir : ~/snap/lxd/36918/share/openvswitch/scripts/

Edit File: ovs-kmod-ctl

#! /bin/sh
# SPDX-License-Identifier: Apache-2.0
# Copyright (C) 2018 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

case $0 in
    */*) dir0=`echo "$0" | sed 's,/[^/]*$,,'` ;;
    *) dir0=./ ;;
esac
. "$dir0/ovs-lib" || exit 1

for dir in "$sbindir" "$bindir" /sbin /bin /usr/sbin /usr/bin; do
    case :$PATH: in
        *:$dir:*) ;;
        *) PATH=$PATH:$dir ;;
    esac
done

insert_mods () {
    # Try loading openvswitch kernel module.
    action "Inserting openvswitch module" modprobe openvswitch
}

insert_kmods_if_required() {
    # If this kernel has no module support, expect we're done.
    if test ! -e /proc/modules
    then
        log_success_msg "Kernel has no loadable module support. Skipping modprobe"
        return 0
    fi

# If openvswitch is already loaded then we're done.
    test -e /sys/module/openvswitch && return 0

# Load openvswitch.  If that's successful then we're done.
    insert_mods && return 0

# If the bridge module is loaded, then that might be blocking
    # openvswitch.  Try to unload it, if there are no bridges.
    test -e /sys/module/bridge || return 1
    bridges=`echo /sys/class/net/*/bridge | sed 's,/sys/class/net/,,g;s,/bridge,,g'`
    if test "$bridges" != "*"; then
        log_warning_msg "not removing bridge module because bridges exist ($bridges)"
        return 1
    fi
    action "removing bridge module" rmmod bridge || return 1

# Try loading openvswitch again.
    insert_mods
}

remove_kmods() {
    for vport in `awk '/^vport_/ { print $1 }' /proc/modules`; do
        action "Removing $vport module" rmmod $vport
    done

if test -e /sys/module/ip_gre; then
        action "Forcing removal of ip_gre module" rmmod ip_gre
    fi

if test -e /sys/module/gre; then
        action "Forcing removal of gre module" rmmod gre
    fi

if test -e /sys/module/openvswitch; then
        action "Removing openvswitch module" rmmod openvswitch
    fi

# Older releases may be using the rtnetlink interface while a
    # newer release will want to use the internal compat interface
    # for geneve and vxlan.
    if test -e /sys/class/net/genev_sys_6081; then
        action "Removing geneve device" \
                ip link del link genev_sys_6081 dev genev_sys_6081
    fi
    if test -e /sys/class/net/vxlan_sys_4789; then
        action "Removing vxlan device" \
                ip link del link vxlan_sys_4789 dev vxlan_sys_4789
    fi

if test -e /sys/module/geneve; then
        action "Forcing removal of geneve module" rmmod geneve
    fi
    if test -e /sys/module/vxlan; then
        action "Forcing removal of vxlan module" rmmod vxlan
    fi
}

usage () {
    cat <<EOF
$0: controls Open vSwitch kernel modules
usage: $0 [OPTIONS] COMMAND

This program is intended to be invoked internally by Open vSwitch startup
scripts.  System administrators should not normally invoke it directly.

Commands:
  insert                  insert the Open vSwitch kernel modules
  remove                  remove the Open vSwitch kernel modules

Options:
  -h, --help              display this help message
  -V, --version           display version information

Default directories with "configure" option and environment variable override:
  logs: /var/log/openvswitch (--with-logdir, OVS_LOGDIR)
  pidfiles and sockets: /var/run/openvswitch (--with-rundir, OVS_RUNDIR)
  conf.db: /etc/openvswitch (--with-dbdir, OVS_DBDIR)
  system configuration: /etc (--sysconfdir, OVS_SYSCONFDIR)
  data files: /share/openvswitch (--pkgdatadir, OVS_PKGDATADIR)
  user binaries: /bin (--bindir, OVS_BINDIR)
  system binaries: /sbin (--sbindir, OVS_SBINDIR)

Please report bugs to bugs@openvswitch.org (see REPORTING-BUGS for details).
EOF

exit 0
}

set_option () {
    var=`echo "$option" | tr abcdefghijklmnopqrstuvwxyz- ABCDEFGHIJKLMNOPQRSTUVWXYZ_`
    eval set=\${$var+yes}
    eval old_value=\$$var
    if test X$set = X || \
        (test $type = bool && \
        test X"$old_value" != Xno && test X"$old_value" != Xyes); then
        echo >&2 "$0: unknown option \"$arg\" (use --help for help)"
        return
    fi
    eval $var=\$value
}

extra_ids=
command=
for arg
do
    case $arg in
        -h | --help)
            usage
            ;;
        -V | --version)
            echo "$0 (Open vSwitch) $VERSION"
            exit 0
            ;;
        --[a-z]*=*)
            option=`expr X"$arg" : 'X--$[^=]*$'`
            value=`expr X"$arg" : 'X[^=]*=$.*$'`
            type=string
            set_option
            ;;
        --no-[a-z]*)
            option=`expr X"$arg" : 'X--no-$.*$'`
            value=no
            type=bool
            set_option
            ;;
        --[a-z]*)
            option=`expr X"$arg" : 'X--$.*$'`
            value=yes
            type=bool
            set_option
            ;;
        -*)
            echo >&2 "$0: unknown option \"$arg\" (use --help for help)"
            exit 1
            ;;
        *)
            if test X"$command" = X; then
                command=$arg
            else
                echo >&2 "$0: exactly one non-option argument required (use --help for help)"
                exit 1
            fi
            ;;
    esac
done
case $command in
    remove)
        remove_kmods
        ;;
    insert)
        insert_kmods_if_required
        ;;
    help)
        usage
        ;;
    '')
        echo >&2 "$0: missing command name (use --help for help)"
        exit 1
        ;;
    *)
        echo >&2 "$0: unknown command \"$command\" (use --help for help)"
        exit 1
        ;;
esac