From: Eric Dumazet <redacted>
Date: Wed, 06 Jun 2012 20:10:23 +0200

I am pretty sure this performance problem should be solved in net/{core|
ipv4|ipv6} instead

What TCP performance do you get with TSO/GSO and SG off ?

We have other drivers already doing this.

I tried a few years ago to make this generic, because NIU could
benefit from it as well, but I couldn't figure out a clean enough
way to abstract this.

Therefore it is absolutely reasonable to continue to let drivers
do this locally until we actually have a reasonable solution.

The gains are definitely significant for chips that lack real TSO
hardware, I absolutely do not require "proof" of this, it is clearly
evident to anyone who considers the issue.