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#! /bin/bash
sleep=1
#Doesn't work with LibVMA.
#iptables -D INPUT -p udp --match multiport --dports 4000:4100 -j traf &> /dev/null
#iptables -X traf &> /dev/null
#iptables -N traf
#iptables -A INPUT -p udp --match multiport --dports 4000:4100 -j traf
#iptables -Z traf
#iptables -L traf -v -n -x
function stat {
ints=$1
for i in "${!ints[@]}"; do
int="${ints[$i]}"
stats1[$i]=$(ethtool -S $int | grep -P "rx_(packets|bytes)_phy" | awk '{ print $2 }')
done
sleep $sleep
for i in "${!ints[@]}"; do
int="${ints[$i]}"
stats2[$i]=$(ethtool -S $int | grep -P "rx_(packets|bytes)_phy" | awk '{ print $2 }')
done
pksum=0
bwsum=0
for i in "${!stats1[@]}"; do
stat1=(${stats1[$i]})
stat2=(${stats2[$i]})
pk1=${stat1[0]}
pk2=${stat2[0]}
bw1=${stat1[1]}
bw2=${stat2[1]}
pkdiff=$(bc <<< "($pk2 - $pk1) / $sleep")
bwdiff=$(bc <<< "($bw2 - $bw1) / $sleep")
printf "%10s" "${ints[$i]}"
printf " packets: %9.3f kpps" $(bc -l <<< "1. * $pkdiff / 1000")
printf ", bandwidth: %9.3f Gb/s\n" $(bc -l <<< "8. * $bwdiff / 1024 / 1024 / 1024")
pksum=$(($pksum + $pkdiff))
bwsum=$(($bwsum + $bwdiff))
done
printf "%10s" "Total"
printf " packets: %9.3f kpps" $(bc -l <<< "1. * $pksum / 1000")
printf ", bandwidth: %9.3f Gb/s\n" $(bc -l <<< "8. * $bwsum / 1024 / 1024 / 1024")
}
ints=(ens1 ens11 ens1d1 ens11d1)
stat $ints
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