I published the issue in the Intel Community forum. I hope they can help. In the meantime, I'll try to work with a usb to ethernet adapter (which of course supports PTP) - does anyone have recommendations? (I think I should publish this question on a different topic...)
On Fri, Jun 18, 2021 at 6:34 PM Jacob Keller <jacob.e.kel...@intel.com> wrote: > > > On 6/18/2021 2:10 AM, Joseph Matan wrote: > > The original state of the NIC (after reset) is: > > > > ethtool --show-eee eth0 > > EEE Settings for eth0: > > EEE status: enabled - inactive > > Tx LPI: 17 (us) > > Supported EEE link modes: 100baseT/Full > > 1000baseT/Full > > Advertised EEE link modes: 100baseT/Full > > 1000baseT/Full > > Link partner advertised EEE link modes: Not reported > > > > ethtool -a eth0 > > Pause parameters for eth0: > > Autonegotiate: on > > RX: on > > TX: on > > > > So the first thing I thought was that it's obviously something with eee > > getting into action. > > (if it was the flow-control in action, I would expect the delay to get > > bigger...) > > > > But just to be sure, I ran: > > > > ethtool -A eth0 autoneg off rx off tx off > > ethtool -a eth0 > > Pause parameters for eth0: > > Autonegotiate: off > > RX: off > > TX: off > > > > ethtool --set-eee eth0 eee off > > EEE Settings for eth0: > > EEE status: disabled > > Tx LPI: 17 (us) > > Supported EEE link modes: 100baseT/Full > > 1000baseT/Full > > Advertised EEE link modes: 100baseT/Full > > 1000baseT/Full > > Link partner advertised EEE link modes: Not reported > > > > But there was no effect... > > Since I still think it's eee in action, my only guess is that turning > > eee off via ethtool doesn't really work... > > > The only thing I can think of here that would cause this behavior is > EEE, but it is possible I am missing something else. > > > I'll try to see if I can dump the value from the relevant register (and > > not use ethtool). > > I just wonder how this issue was ever mentioned before in this forum... > > From what I see this NIC is quite common. > > > > I guess no one else looked at the delay all that closely? >
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