netdev - Re: [PATCH] net: Add ndo_gso

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Message-Id: <20141007.130504.1805673129740661479.davem@davemloft.net>
Date:	Tue, 07 Oct 2014 13:05:04 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	alexei.starovoitov@...il.com
Cc:	therbert@...gle.com, jesse@...ira.com, gerlitz.or@...il.com,
	alexander.h.duyck@...el.com, john.r.fastabend@...el.com,
	jeffrey.t.kirsher@...el.com, netdev@...r.kernel.org, tgraf@...g.ch,
	pshelar@...ira.com, azhou@...ira.com
Subject: Re: [PATCH] net: Add ndo_gso_check

From: Alexei Starovoitov <alexei.starovoitov@...il.com>
Date: Tue, 7 Oct 2014 09:50:50 -0700

> CHECKSUM_COMPLETE is a burden on software.

I totally disagree, it's the most software friendly checksumming
offload mechanism possible.  I wish every card did it.

CHECKSUM_COMPLETE means that any sub-protocol or tunneling mechanism
can be trivially supported without any modifications to hardware, and
it therefore makes checksum offloading of new protocols require no
hardware changes whatsoever.
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