Re: [PATCH -next 2/2] virtio_net: Read the advised MTU

From: Rick Jones
Date: Thu Jun 02 2016 - 14:10:30 EST

On 06/02/2016 10:06 AM, Aaron Conole wrote:
Rick Jones <rick.jones2@xxxxxxx> writes:
One of the things I've been doing has been setting-up a cluster
(OpenStack) with JumboFrames, and then setting MTUs on instance vNICs
by hand to measure different MTU sizes. It would be a shame if such a
thing were not possible in the future. Keeping a warning if shrinking
the MTU would be good, leave the error (perhaps) to if an attempt is
made to go beyond the advised value.

This was cut because it didn't make sense for such a warning to
be issued, but it seems like perhaps you may want such a feature? I
agree with Michael, after thinking about it, that I don't know what sort
of use the warning would serve. After all, if you're changing the MTU,
you must have wanted such a change to occur?

I don't need a warning, was simply willing to live with one when shrinking the MTU. Didn't want an error.

happy benchmarking,

rick jones