Comment 3 for bug 1853965

1.load PF&VF driver --hns3 pf vf driver
2.allocate 8 VF for each PF
example:echo 8 > /sys/bus/pci/devices/0000\:7d\:00.0/sriov_numvfs
3.tesgine send tcp/udp packets to ports
use this tesgine device to send this tcp/udp package.
4.modify VF queue depth by ethtool -G command
#!/bin/sh
while [ 1 ]
do
for (( i = 0; i < 7; i++ ))
 do
     echo "ethtool -G eth$i tx 32760 rx 32760"
  ethtool -G eth$i tx 32760 rx 32760 | tee -a result.txt
    sleep 1s
     echo "ethtool -G eth$i tx 4096 rx 4096"
  ethtool -G eth$i tx 4096 rx 4096 | tee -a result.txt
    sleep 1s
    done
done