#!/bin/bash

# Copyright 2013-present Barefoot Networks, 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.

if [[ $EUID -ne 0 ]]; then
    echo "This script should be run using sudo or as the root user"
    exit 1
fi

THIS_DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )

source $THIS_DIR/../../env.sh

P4C_BM_SCRIPT=$P4C_BM_PATH/p4c_bm/__main__.py

SWITCH_PATH=$BMV2_PATH/targets/simple_switch/simple_switch

CLI_PATH=$BMV2_PATH/targets/simple_switch/sswitch_CLI

# create CPU port
intf0="cpu-veth-0"
intf1="cpu-veth-1"
if ! ip link show $intf0 &> /dev/null; then
    ip link add name $intf0 type veth peer name $intf1
    ip link set dev $intf0 up
    ip link set dev $intf1 up
    TOE_OPTIONS="rx tx sg tso ufo gso gro lro rxvlan txvlan rxhash"
    for TOE_OPTION in $TOE_OPTIONS; do
        /sbin/ethtool --offload $intf0 "$TOE_OPTION" off
        /sbin/ethtool --offload $intf1 "$TOE_OPTION" off
    done
fi
sysctl net.ipv6.conf.$intf0.disable_ipv6=1
sysctl net.ipv6.conf.$intf1.disable_ipv6=1

$P4C_BM_SCRIPT p4src/simple_nat.p4 --json simple_nat.json
# This gives libtool the opportunity to "warm-up"
$SWITCH_PATH >/dev/null 2>&1
PYTHONPATH=$PYTHONPATH:$BMV2_PATH/mininet/ python topo.py \
    --behavioral-exe $SWITCH_PATH \
    --json simple_nat.json \
    --cli $CLI_PATH \
    --thrift-port 22222
