utilities/ovs-kmod-ctl.in

   1 #! /bin/sh
   2 # SPDX-License-Identifier: Apache-2.0
   3 # Copyright (C) 2018 Red Hat, Inc.
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at:
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 case $0 in
  18     */*) dir0=`echo "$0" | sed 's,/[^/]*$,,'` ;;
  19     *) dir0=./ ;;
  20 esac
  21 . "$dir0/ovs-lib" || exit 1
  22
  23 for dir in "$sbindir" "$bindir" /sbin /bin /usr/sbin /usr/bin; do
  24     case :$PATH: in
  25         *:$dir:*) ;;
  26         *) PATH=$PATH:$dir ;;
  27     esac
  28 done
  29
  30 insert_mods () {
  31     # Try loading openvswitch kernel module.
  32     action "Inserting openvswitch module" modprobe openvswitch
  33 }
  34
  35 insert_kmods_if_required() {
  36     # If this kernel has no module support, expect we're done.
  37     if test ! -e /proc/modules
  38     then
  39         log_success_msg "Kernel has no loadable module support. Skipping modprobe"
  40         return 0
  41     fi
  42
  43     # If openvswitch is already loaded then we're done.
  44     test -e /sys/module/openvswitch && return 0
  45
  46     # Load openvswitch.  If that's successful then we're done.
  47     insert_mods && return 0
  48
  49     # If the bridge module is loaded, then that might be blocking
  50     # openvswitch.  Try to unload it, if there are no bridges.
  51     test -e /sys/module/bridge || return 1
  52     bridges=`echo /sys/class/net/*/bridge | sed 's,/sys/class/net/,,g;s,/bridge,,g'`
  53     if test "$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     insert_mods
  61 }
  62
  63 remove_kmods() {
  64     for vport in `awk '/^vport_/ { print $1 }' /proc/modules`; do
  65         action "Removing $vport module" rmmod $vport
  66     done
  67
  68     if test -e /sys/module/ip_gre; then
  69         action "Forcing removal of ip_gre module" rmmod ip_gre
  70     fi
  71
  72     if test -e /sys/module/gre; then
  73         action "Forcing removal of gre module" rmmod gre
  74     fi
  75
  76     if test -e /sys/module/openvswitch; then
  77         action "Removing openvswitch module" rmmod openvswitch
  78     fi
  79
  80     # Older releases may be using the rtnetlink interface while a
  81     # newer release will want to use the internal compat interface
  82     # for geneve and vxlan.
  83     if test -e /sys/class/net/genev_sys_6081; then
  84         action "Removing geneve device" \
  85                 ip link del link genev_sys_6081 dev genev_sys_6081
  86     fi
  87     if test -e /sys/class/net/vxlan_sys_4789; then
  88         action "Removing vxlan device" \
  89                 ip link del link vxlan_sys_4789 dev vxlan_sys_4789
  90     fi
  91
  92     if test -e /sys/module/geneve; then
  93         action "Forcing removal of geneve module" rmmod geneve
  94     fi
  95     if test -e /sys/module/vxlan; then
  96         action "Forcing removal of vxlan module" rmmod vxlan
  97     fi
  98 }
  99
 100 usage () {
 101     cat <<EOF
 102 $0: controls Open vSwitch kernel modules
 103 usage: $0 [OPTIONS] COMMAND
 104
 105 This program is intended to be invoked internally by Open vSwitch startup
 106 scripts.  System administrators should not normally invoke it directly.
 107
 108 Commands:
 109   insert                  insert the Open vSwitch kernel modules
 110   remove                  remove the Open vSwitch kernel modules
 111
 112 Options:
 113   -h, --help              display this help message
 114   -V, --version           display version information
 115
 116 Default directories with "configure" option and environment variable override:
 117   logs: @LOGDIR@ (--with-logdir, OVS_LOGDIR)
 118   pidfiles and sockets: @RUNDIR@ (--with-rundir, OVS_RUNDIR)
 119   conf.db: @DBDIR@ (--with-dbdir, OVS_DBDIR)
 120   system configuration: @sysconfdir@ (--sysconfdir, OVS_SYSCONFDIR)
 121   data files: @pkgdatadir@ (--pkgdatadir, OVS_PKGDATADIR)
 122   user binaries: @bindir@ (--bindir, OVS_BINDIR)
 123   system binaries: @sbindir@ (--sbindir, OVS_SBINDIR)
 124
 125 Please report bugs to bugs@openvswitch.org (see REPORTING-BUGS for details).
 126 EOF
 127
 128     exit 0
 129 }
 130
 131 set_option () {
 132     var=`echo "$option" | tr abcdefghijklmnopqrstuvwxyz- ABCDEFGHIJKLMNOPQRSTUVWXYZ_`
 133     eval set=\${$var+yes}
 134     eval old_value=\$$var
 135     if test X$set = X || \
 136         (test $type = bool && \
 137         test X"$old_value" != Xno && test X"$old_value" != Xyes); then
 138         echo >&2 "$0: unknown option \"$arg\" (use --help for help)"
 139         return
 140     fi
 141     eval $var=\$value
 142 }
 143
 144 extra_ids=
 145 command=
 146 for arg
 147 do
 148     case $arg in
 149         -h | --help)
 150             usage
 151             ;;
 152         -V | --version)
 153             echo "$0 (Open vSwitch) $VERSION"
 154             exit 0
 155             ;;
 156         --[a-z]*=*)
 157             option=`expr X"$arg" : 'X--\([^=]*\)'`
 158             value=`expr X"$arg" : 'X[^=]*=\(.*\)'`
 159             type=string
 160             set_option
 161             ;;
 162         --no-[a-z]*)
 163             option=`expr X"$arg" : 'X--no-\(.*\)'`
 164             value=no
 165             type=bool
 166             set_option
 167             ;;
 168         --[a-z]*)
 169             option=`expr X"$arg" : 'X--\(.*\)'`
 170             value=yes
 171             type=bool
 172             set_option
 173             ;;
 174         -*)
 175             echo >&2 "$0: unknown option \"$arg\" (use --help for help)"
 176             exit 1
 177             ;;
 178         *)
 179             if test X"$command" = X; then
 180                 command=$arg
 181             else
 182                 echo >&2 "$0: exactly one non-option argument required (use --help for help)"
 183                 exit 1
 184             fi
 185             ;;
 186     esac
 187 done
 188 case $command in
 189     remove)
 190         remove_kmods
 191         ;;
 192     insert)
 193         insert_kmods_if_required
 194         ;;
 195     help)
 196         usage
 197         ;;
 198     '')
 199         echo >&2 "$0: missing command name (use --help for help)"
 200         exit 1
 201         ;;
 202     *)
 203         echo >&2 "$0: unknown command \"$command\" (use --help for help)"
 204         exit 1
 205         ;;
 206 esac