From: Wei Liu <wei.liu2@citrix.com>
Date: Mon, 26 Aug 2013 11:59:38 +0000 (+0100)
Subject: xen-netback: switch to NAPI + kthread 1:1 model
X-Git-Tag: v3.12-rc1~132^2~165^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b3f980bd827e6e81a050c518d60ed7811a83061d;p=pandora-kernel.git

xen-netback: switch to NAPI + kthread 1:1 model

This patch implements 1:1 model netback. NAPI and kthread are utilized
to do the weight-lifting job:

- NAPI is used for guest side TX (host side RX)
- kthread is used for guest side RX (host side TX)

Xenvif and xen_netbk are made into one structure to reduce code size.

This model provides better scheduling fairness among vifs. It is also
prerequisite for implementing multiqueue for Xen netback.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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