From: Patrick McHardy <kaber@trash.net>
Date: Wed, 17 Apr 2013 06:46:58 +0000 (+0000)
Subject: net: add function to allocate sk_buff head without data area
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~65^2~88^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0ebd0ac5ff01ebf412e1bd3c33620ef7ffc5d866;p=pandora-kernel.git

net: add function to allocate sk_buff head without data area

Add a function to allocate a sk_buff head without any data. This will
be used by memory mapped netlink to attach data from the mmaped area
to the skb.

Additionally change skb_release_all() to check whether the skb has a
data area to allow the skb destructor to clear the data pointer in case
only a head has been allocated.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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