Re: NIU - Sun Neptune 10g - Transmit timed out reset (2.6.24)

From: David Miller
Date: Thu May 22 2008 - 14:28:40 EST

From: Ben Hutchings <bhutchings@xxxxxxxxxxxxxx>
Date: Thu, 22 May 2008 19:14:21 +0100

> David Miller wrote:
> > For now, yes. The transmit path itself in the generic network
> > device layer is where the serialization comes from.
> This is true in the general case, but can be substantially mitigated
> by segmentation offload. Unfortunately GSO doesn't help much as the
> overhead of allocating the extra skbs is fairly high.

But GSO still does help a lot for chips that lack hw TSO support,
such as NIU, therefore sw GSO support in the NIU driver was pretty
high on my todo list.
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