From 6dd3c9ec2387725a8e529fae64415cd538b955b7 Mon Sep 17 00:00:00 2001
From: Florian Westphal <fw@strlen.de>
Date: Fri, 14 Feb 2014 13:14:39 +0100
Subject: [PATCH] ip_tunnel: return more precise errno value when adding tunnel
 fails

Currently this always returns ENOBUFS, because the return value of
__ip_tunnel_create is discarded.

A more common failure is a duplicate name (EEXIST).  Propagate the real
error code so userspace can display a more meaningful error message.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Reading git-format-patch failed