gigabit e1000e Detected Hardware Unit Hang

If we see it in

$ dmesg

[Tue Feb 13 20:53:07 2018] e1000e 0000:00:19.0 eno1: Detected Hardware Unit Hang:
                             TDH                  <1b>
                             TDT                  <76>
                             next_to_use          <76>
                             next_to_clean        <1b>
                           buffer_info[next_to_clean]:
                             time_stamp           <361c0382c>
                             next_to_watch        <1e>
                             jiffies              <361c056ec>
                             next_to_watch.status <0>
                           MAC Status             <80083>
                           PHY Status             <796d>
                           PHY 1000BASE-T Status  <3800>
                           PHY Extended Status    <3000>
                           PCI Status             <10>
[Tue Feb 13 20:53:07 2018] e1000e 0000:00:19.0 eno1: Reset adapter unexpectedly

the resulution is:

$ ethtool -K eth0 gso off gro off tso off

 

for gentoo, add these lines into

$ vi /etc/conf.d/net

postup(){

  /usr/sbin/ethtool -K eno1 gso off gro off tso off

}

 

src: https://serverfault.com/questions/616485/e1000e-reset-adapter-unexpectedly-detected-hardware-unit-hang