On Sat, 12 Feb 2005 13:11:43 +0100
Andi Kleen [off-list ref] wrote:

"David S. Miller" [off-list ref] writes:

quoted

I guess this is e1000.  Any e1000 internals experts reading
here who can comment on how e1000's TSO engine treats the
PSH flag?

If that is the problem it should be easy to test for. Just
disable TSO with ethtool -K ethX tso off

Hubert, does that make the problem go away?

We're testing the new code that sets PSH on every TSO frame.
If we disable TSO, the new code won't be exercised nor tested.
:-)