netdev - Re: e1000e max frame calculation

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Message-ID: <alpine.NEB.2.11.1504062043320.2726@chris.i8u.org>
Date:	Mon, 6 Apr 2015 20:47:13 -0700 (PDT)
From:	Hisashi T Fujinaka <htodd@...fifty.com>
To:	Alexander Duyck <alexander.h.duyck@...hat.com>
cc:	Michael Cronenworth <mike@...tml.com>, netdev@...r.kernel.org
Subject: Re: e1000e max frame calculation

On Mon, 6 Apr 2015, Alexander Duyck wrote:

> The e1000e pch parts seem very limited in terms of their jumbo frames 
> support.  It looks like the first pch part only supported 4K, and in the case 
> of the later generations I only see support for a 9018 jumbo frame listed in 
> the datasheet.  I suspect this is why that is set as the limit in the driver. 
> The question at this point is if 9018 is the limit, why is it the limit and 
> is there any wiggle room to it.

It's a limit that was told to us by the HW group for the 82579.
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