OpenStack Networking (Neutron)
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# 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.
# Defaults
# --------
# Set variables for building OVS from source
OVS_REPO=${OVS_REPO:-https://github.com/openvswitch/ovs.git}
OVS_REPO_NAME=$(basename ${OVS_REPO} | cut -f1 -d'.')
OVS_REPO_NAME=${OVS_REPO_NAME:-ovs}
OVS_BRANCH=${OVS_BRANCH:-51e9479da62edb04a5be47a7655de75c299b9fa1}
# Functions
# load_module() - Load module using modprobe module given by argument and dies
# on failure
# - fatal argument is optional and says whether function should
# exit if module can't be loaded
function load_module {
local module=$1
local fatal=$2
if [ "$(trueorfalse True fatal)" == "True" ]; then
sudo modprobe $module || (dmesg && die $LINENO "FAILED TO LOAD $module")
else
sudo modprobe $module || (echo "FAILED TO LOAD $module" && dmesg)
fi
}
# prepare_for_compilation() - Fetch ovs git repository and install packages needed for
# compilation.
function prepare_for_ovs_compilation {
local build_modules=${1:-False}
OVS_DIR=$DEST/$OVS_REPO_NAME
if [ ! -d $OVS_DIR ] ; then
# We can't use git_clone here because we want to ignore ERROR_ON_CLONE
git_timed clone $OVS_REPO $OVS_DIR
cd $OVS_DIR
git checkout $OVS_BRANCH
else
# Even though the directory already exists, call git_clone to update it
# if needed based on the RECLONE option
git_clone $OVS_REPO $OVS_DIR $OVS_BRANCH
cd $OVS_DIR
fi
# TODO: Can you create package list files like you can inside devstack?
install_package autoconf automake libtool gcc patch make
# If build_modules is False, we don't need to install the kernel-*
# packages. Just return.
if [[ "$build_modules" == "False" ]]; then
return
fi
KERNEL_VERSION=`uname -r`
if is_fedora ; then
# is_fedora covers Fedora, RHEL, CentOS, etc...
if [[ "$os_VENDOR" == "Fedora" ]]; then
install_package elfutils-libelf-devel
KERNEL_VERSION=`echo $KERNEL_VERSION | cut --delimiter='-' --field 1`
elif [[ ${KERNEL_VERSION:0:2} != "3." ]]; then
# dash is illegal character in rpm version so replace
# them with underscore like it is done in the kernel
# https://github.com/torvalds/linux/blob/master/scripts/package/mkspec#L25
# but only for latest series of the kernel, not 3.x
KERNEL_VERSION=`echo $KERNEL_VERSION | tr - _`
fi
echo NOTE: if kernel-devel-$KERNEL_VERSION or kernel-headers-$KERNEL_VERSION installation
echo failed, please, provide a repository with the package, or yum update / reboot
echo your machine to get the latest kernel.
install_package kernel-devel-$KERNEL_VERSION
install_package kernel-headers-$KERNEL_VERSION
elif is_ubuntu ; then
install_package linux-headers-$KERNEL_VERSION
fi
}
# load_ovs_kernel_modules() - load openvswitch kernel module
function load_ovs_kernel_modules {
load_module openvswitch
load_module vport-geneve False
dmesg | tail
}
# reload_ovs_kernel_modules() - reload openvswitch kernel module
function reload_ovs_kernel_modules {
set +e
ovs_system=$(sudo ovs-dpctl dump-dps | grep ovs-system)
if [ -n "$ovs_system" ]; then
sudo ovs-dpctl del-dp ovs-system
fi
set -e
sudo modprobe -r vport_geneve
sudo modprobe -r openvswitch
load_ovs_kernel_modules
}
# compile_ovs() - Compile OVS from source and load needed modules.
# Accepts two parameters:
# - first one is False by default and means that modules are not built and installed.
# - second optional parameter defines prefix for ovs compilation
# - third optional parameter defines localstatedir for ovs single machine runtime
# Env variables OVS_REPO_NAME, OVS_REPO and OVS_BRANCH must be set
function compile_ovs {
local _pwd=$PWD
local build_modules=${1:-False}
local prefix=$2
local localstatedir=$3
if [ -n "$prefix" ]; then
prefix="--prefix=$prefix"
fi
if [ -n "$localstatedir" ]; then
localstatedir="--localstatedir=$localstatedir"
fi
prepare_for_ovs_compilation $build_modules
KERNEL_VERSION=$(uname -r)
major_version=$(echo "${KERNEL_VERSION}" | cut -d '.' -f1)
patch_level=$(echo "${KERNEL_VERSION}" | cut -d '.' -f2)
if [ "${major_version}" -gt 5 ] || [ "${major_version}" == 5 ] && [ "${patch_level}" -gt 5 ]; then
echo "NOTE: KERNEL VERSION is ${KERNEL_VERSION} and OVS doesn't support compiling "
echo "Kernel module for version higher than 5.5. Skipping module compilation..."
build_modules="False"
fi
if [ ! -f configure ] ; then
./boot.sh
fi
if [ ! -f config.status ] || [ configure -nt config.status ] ; then
if [[ "$build_modules" == "True" ]]; then
./configure $prefix $localstatedir --with-linux=/lib/modules/$(uname -r)/build
else
./configure $prefix $localstatedir
fi
fi
make -j$[$(nproc) + 1]
sudo make install
if [[ "$build_modules" == "True" ]]; then
sudo make INSTALL_MOD_DIR=kernel/net/openvswitch modules_install
reload_ovs_kernel_modules
else
load_ovs_kernel_modules
fi
cd $_pwd
}
# action_service - call an action over openvswitch service
# Accepts one parameter that can be either
# 'start', 'restart' and 'stop'.
function action_openvswitch {
local action=$1
if is_ubuntu; then
${action}_service openvswitch-switch
elif is_fedora; then
${action}_service openvswitch
elif is_suse; then
if [[ $DISTRO == "sle12" ]] && [[ $os_RELEASE -lt 12.2 ]]; then
${action}_service openvswitch-switch
else
${action}_service openvswitch
fi
fi
}
# start_new_ovs() - removes old ovs database, creates a new one and starts ovs
function start_new_ovs () {
sudo rm -f /etc/openvswitch/conf.db /etc/openvswitch/.conf.db~lock~
sudo /usr/share/openvswitch/scripts/ovs-ctl start
}
# stop_new_ovs() - stops ovs
function stop_new_ovs () {
local ovs_ctl='/usr/share/openvswitch/scripts/ovs-ctl'
if [ -x $ovs_ctl ] ; then
sudo $ovs_ctl stop
fi
}
# remove_ovs_packages() - removes old ovs packages from the system
function remove_ovs_packages() {
for package in openvswitch openvswitch-switch openvswitch-common; do
if is_package_installed $package; then
uninstall_package $package
fi
done
}
# load_conntrack_gre_module() - loads nf_conntrack_proto_gre kernel module
function load_conntrack_gre_module() {
sudo modprobe nf_conntrack_proto_gre
}