From: Ian Campbell <Ian.Campbell@citrix.com>
Date: Wed, 10 Oct 2012 03:48:42 +0000 (+0000)
Subject: xen: netback: handle compound page fragments on transmit.
X-Git-Tag: v3.7-rc1~25^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6a8ed462f16b8455eec5ae00eb6014159a6721f0;p=pandora-kernel.git

xen: netback: handle compound page fragments on transmit.

An SKB paged fragment can consist of a compound page with order > 0.
However the netchannel protocol deals only in PAGE_SIZE frames.

Handle this in netbk_gop_frag_copy and xen_netbk_count_skb_slots by
iterating over the frames which make up the page.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Konrad Rzeszutek Wilk <konrad@kernel.org>
Cc: Sander Eikelenboom <linux@eikelenboom.it>
Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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