From: Andrew J. Bennieston <andrew.bennieston@citrix.com>
Date: Wed, 4 Jun 2014 09:30:45 +0000 (+0100)
Subject: xen-netfront: Add support for multiple queues
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~36^2~76^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=50ee60611bf0c7328e5cae438ea5c26590f3f747;p=pandora-kernel.git

xen-netfront: Add support for multiple queues

Build on the refactoring of the previous patch to implement multiple
queues between xen-netfront and xen-netback.

Check XenStore for multi-queue support, and set up the rings and event
channels accordingly.

Write ring references and event channels to XenStore in a queue
hierarchy if appropriate, or flat when using only one queue.

Update the xennet_select_queue() function to choose the queue on which
to transmit a packet based on the skb hash result.

Signed-off-by: Andrew J. Bennieston <andrew.bennieston@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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