ergw_tarball/make_test_conf at master · quantonium/ergw_tarball · GitHub

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#!/bin/bash

# make_test_conf - Make ergw test configuration
#
# Copyright (c) 2018, Quantonium Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#   * Redistributions of source code must retain the above copyright
#     notice, this list of conditions and the following disclaimer.
#   * Redistributions in binary form must reproduce the above copyright
#     notice, this list of conditions and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
#   * Neither the name of the Quantonium nor the names of its contributors
#     may be used to endorse or promote products derived from this software
#     without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL QUANTONIUM BE LIABLE FOR ANY DIRECT,
# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#


# Script to make ergw test configuration. This creates a configuration
# for ILA of ergw where a pool of addresses with SIR prefix 2222:: is
# used. The aaddress pool is 2222::1:0:0:0 to 2222::1:0:0:7. This
# is compatible with the VPP GW test configuration. See:
# https://github.com/quantonium/vpp/blob/feature/gtp-up/README.vpp
#
# This script assumes that there are two interfaces creates ens3 and
# ens4, where ens3 is the adminstrative interface and ens4 is the interface
# that connects to the MME. This is part of the overall assumption that
# ens3, ens4, ans5, and ens6 are the interface that are used by the GTP GW
# (ens5 and ens6 are used # by VPP). Note that ens4 is set to be a vrf slave.
#
# This takes five IPv6 address arguments:
#     vfr_irx_addr - a local address for the vrf (ens) interface
#     enodeb_addr - enodeB address
#     gw_addr - default gateway on ens4
#     mme_addr - address of the MME
#
# Npte that this configuration does make a number of assumptions and
# prerequisites (like the interfaces that are present). If needed it
# can be edited for local configuration.
#

base_if="ens4"
admin_if="ens3"

convert_to_ergw()
{
	ergw_addr=`$QDIR/../ila/src/ila/test/ergw_addr $1`
	ret=$?
	echo $ergw_addr
	return $ret
}

check_return()
{
	if [ "$?" -ne 0 ]; then
		echo "Address conversion failed for $2: $3"
		exit 1
	fi
}

# Create ergw configuration file and populate in /etc location. This
# configures the vrf irx address and the enodeb addresses in the file.
#
make_ergw_conf()
{
	vrf_irx_addr_string=`convert_to_ergw $1`
	check_return $? $1 $vrf_irx_addr_string

	enodeb_addr_string=`convert_to_ergw $2`
	check_return $? $2 $enodeb_addr_string

	sed "s/%vrf-irx-addr%/$vrf_irx_addr_string/g; s/%enodeb-addr%/$enodeb_addr_string/g" ergw-gtp-c-node.config.test_template > ergw-gtp-c-node.config.test

	sudo cp ergw-gtp-c-node.config.test /etc/ergw-gtp-c-node/ergw-gtp-c-node.config
}

# Configure vrf
#
make_vrf_conf()
{
	vrf_irx_addr=$1
	gw_addr=$2

	sudo ip link add vrf-irx type vrf table 10
	sudo ip link set dev vrf-irx up
	sudo ip link set dev $base_if master vrf-irx
	sudo ip link set dev $base_if up
	sudo ip -6 addr add $vrf_irx_addr/128 dev vrf-irx
	sudo ip -6 route add table 10 default via $gw_addr
}

# Make routes to mme and enodeb
#
make_routes()
{
	gw_addr=$1
	enodeb_addr=$2
	mme_addr=$3

	sudo ip -6 route add $mme_addr via $gw_addr dev $base_if
}

# Workaround for vrf kernel issue. Configure the vrf address on another
# interface than the one becoming a vrf slave so that we can bind to it
#
vrf_workaround()
{
	vrf_irx_addr=$1

	sudo ip -6 addr add $vrf_irx_addr/128 dev $admin_if
}

if [ "$#" -ne 4 ]; then
	echo "Usage: make_test_conf <vrf-irx-addr> <enodeb-addr> <gw-addr> <mme-addr>"
	echo
	exit 1
fi

if [ -z $QDIR ]; then
	echo "Please set QDIR (like \"export QDIR=~/quantonium/install\")"
	echo
	exit 1
fi

vfr_irx_addr=$1
enodeb_addr=$2
gw_addr=$3
mme_addr=$4

make_ergw_conf $vfr_irx_addr $enodeb_addr
make_vrf_conf $vfr_irx_addr $gw_addr
make_routes $gw_addr $enodeb_addr $mme_addr
vrf_workaround $vrf_irx_addr