#!/bin/sh
#
# Copyright (C) 2010 - 2014, Linaro Limited.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

set -x
usage()
{
    echo "usage:"
    echo " - $1 (interface.Primary traffic output interface.)"
    echo " - $2 (address.The IP address that the packages will be replayed to.)"
    echo " - $3 (rate.Replay packets at a given packets/sec.It takes an integer number or 'max' as its argument.)"
    echo " - $4 (loop number.Loop through the capture file X times.)"
}

if [  $# -ne 4 ]; then
    echo "param miss!"
    usage
    exit 1
fi

INTF=$1
ADDR=$2
RATE=$3
LOOP=$4

local_ip=$(ifconfig $INTF |grep "inet addr"|grep -v "127.0.0.1"|cut -d: -f2|cut -d' ' -f1)
remote_ip=$ADDR
local_mac=$(ifconfig $INTF | grep "HWaddr" | awk '{print $5}')
ping -c 1 ${remote_ip}

if [ $? -ne 0 ]; then
    echo "Address $remote_ip isn't reachable"
    exit 1
fi
remote_mac=$(arp -a | grep "${remote_ip}" | awk '{print $4}')

opt="-t"
if [ $RATE != 'max' ]; then
    opt="-p $RATE"
fi

infile="./common/scripts/pcapfiles/iperf.pcap"
tcpreplay -V
tcpprep -a client -i $infile -o tmpcap.cache
tcprewrite  --enet-smac=$local_mac,$remote_mac --enet-dmac=$remote_mac,$local_mac --endpoints=$local_ip:$remote_ip -c tmpcap.cache -i $infile -o out.tmpcap.pcap --skipbroadcast
tcpreplay -i eth0 -l 100 $opt -c tmpcap.cache out.tmpcap.pcap | ./common/scripts/netperf2LAVA.py