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Date: Fri, 16 Mar 2018 18:52:06 -0400
From: Joe Buehler <aspam@cox.net>
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CC: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>
Subject: Re: netmap ixgbevf mtu
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Sorry, I should have added, this is LINUX if it matters.

Joe Buehler wrote:
> I am having difficulties with netmap over top of ixgbevf when attempting to use a large MTU (say 9000 bytes).
> 
> Does the ixgbevf driver use 2048 byte buffers for RX regardless of the MTU or netmap buffer size?
> 
> I can send large frames just fine but inbound frames are passed via netmap as 2048 bytes max.  It is possible that netmap is passing frames in multiple pieces I suppose, I haven't checked that yet -- my code is looking at the frame headers only at the moment so would toss trailing pieces.
> 
> Joe Buehler
> 
>