netdev - rxhash for virtio

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Message-ID: <CAMou0=wWLy+KMue79Afrf8SRkqsC9qB+p_GRUCWFzM7kNtvAfA@mail.gmail.com>
Date:	Thu, 22 Jan 2015 21:43:15 -0800
From:	Nick H <nickkvm@...il.com>
To:	netdev@...r.kernel.org
Cc:	mst@...hat.com, jasonwang@...hat.com
Subject: rxhash for virtio_net

While trying to enable rxhash for virtio_net over net-next, I found
that we still do not support it. Quick Google search yields several
patches (including flow-director for virtio_net), but looks like none
of them made it in. If my observation is correct, what are the
prominent reasons why rxhash support for virtio has not made its way
in ? (I see some concerns over Out-of-order delivery etc, any other ?
). Without rxhash for virtio, is there a way to tie a flow to a
particular cpu on host and guest side ?

Thanks,
N
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