From: huaibin Wang <huaibin.wang@6wind.com>
Date: Wed, 11 Feb 2015 17:10:36 +0000 (+0100)
Subject: xfrm: release dst_orig in case of error in xfrm_lookup()
X-Git-Tag: omap-for-v4.1/fixes-rc1~306^2~9^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ac37e2515c1a89c477459a2020b6bfdedabdb91b;p=pandora-kernel.git

xfrm: release dst_orig in case of error in xfrm_lookup()

dst_orig should be released on error. Function like __xfrm_route_forward()
expects that behavior.
Since a recent commit, xfrm_lookup() may also be called by xfrm_lookup_route(),
which expects the opposite.
Let's introduce a new flag (XFRM_LOOKUP_KEEP_DST_REF) to tell what should be
done in case of error.

Fixes: f92ee61982d("xfrm: Generate blackhole routes only from route lookup functions")
Signed-off-by: huaibin Wang <huaibin.wang@6wind.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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