From: Zoltan Kiss <zoltan.kiss@citrix.com>
Date: Thu, 6 Mar 2014 21:48:23 +0000 (+0000)
Subject: xen-netback: Use skb->cb for pending_idx
X-Git-Tag: v3.15-rc1~113^2~210^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8f13dd9612286cc0d38d32ff9543763b7c74f6a5;p=pandora-kernel.git

xen-netback: Use skb->cb for pending_idx

Storing the pending_idx at the first byte of the linear buffer never looked
good, skb->cb is a more proper place for this. It also prevents the header to
be directly grant copied there, and we don't have the pending_idx after we
copied the header here, so it's time to change it.
It also introduces helpers for the RX side

Signed-off-by: Zoltan Kiss <zoltan.kiss@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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