#!/bin/bash
#
# Copyright 2019-present Open Networking Foundation
#
# 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.

SPGWU_IP=$(echo {{ .Values.config.spgwu.sgi.ip }} | awk -F '/' '{print $1}')

netmask_to_prefix() {
    prefix=0
    octat=0$( printf '%o' ${1//./ } )
    while [ $octat -gt 0 ];
    do
        prefix=$(( $prefix + $(( $octat % 2))))
        octat=$(( $octat >> 1))
    done
    echo $prefix
}

ip route add {{ .Values.config.spgwc.ueIpPool.ip }}/$(netmask_to_prefix {{ .Values.config.spgwc.ueIpPool.mask }} ) via $SPGWU_IP dev {{ .Values.config.nginx.sgi.device }}