#! /bin/sh


# Might change this later.
. $1
echo "Usage - runs 10 million packets at a range of packet sizes"



function pgset() {
    local result

    echo $1 > $PGDEV

    result=`cat $PGDEV | fgrep "Result: OK:"`
    if [ "$result" = "" ]; then
         cat $PGDEV | fgrep Result:
    fi
}

function pg() {
    echo inject > $PGDEV
    cat $PGDEV
}

# Config Start Here -----------------------------------------------------------


# thread config
# Each CPU has own thread. Two CPU exammple. We add eth1, eth2 respectivly.

PGDEV=/proc/net/pktgen/kpktgend_0
  echo "Removing all devices"
 pgset "rem_device_all" 
  echo "Adding $DEV"
 pgset "add_device $DEV" 
  echo "Setting max_before_softirq 10000"
 pgset "max_before_softirq 10000"


# device config
# delay 0 means maximum speed.

CLONE_SKB="clone_skb 1000"
# NIC adds 4 bytes CRC
PKT_SIZE=60

# COUNT 0 means forever
#COUNT="count 0"
COUNT="count 10000000"
DELAY="delay 0"


for PKT_SIZE in 60 124 252 508 1020 1496 1500 4096
do
	PGDEV=/proc/net/pktgen/$DEV
  	echo "Configuring $PGDEV packet size $PKT_SIZE"
 	pgset "$COUNT"
 	pgset "$CLONE_SKB"
	pgset "min_pkt_size 60"
 	pgset "max_pkt_size $PKT_SIZE"
 	pgset "$DELAY"
 	pgset "dst $D_ADDR"
 	pgset "dst_mac $D_MAC"
	cat $PGDEV

	# Time to run
	PGDEV=/proc/net/pktgen/pgctrl

 	echo "Running... ctrl^C to stop"
 	pgset "start" 
 	echo "Done"
	echo "Check errors"
	ethtool -S eth1 | grep error | grep -v 'errors: 0'
	echo "Check remote machine"
	ssh $TARGET ethtool -S $DEV | grep error


done 
# Result can be vieved in /proc/net/pktgen/eth1
echo "Mileage may vary"
cat /proc/net/pktgen/$DEV