Current File : //snap/lxd/current/share/openvswitch/scripts/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
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