From: Krishna Kumar2 <redacted>
Date: Fri, 15 Jan 2010 14:50:04 +0530

I wonder if there is some other way to test it. I could test it on
the card I have, cxgbe, by ethtool F_SG off, and then testing
this patch with existing code (both with ethtool F_SG off)? Will
that be enough to get an idea, or I cannot assume this is
reasonable for real non-sg drivers? I am sure there is a
degradation, and mentioned that part as a "penalty" for those
drivers in my patch.

I think such a test would provide useful data by which to judge this
change.