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Subject[patch 23/48] net: Fix userland breakage wrt. linux/if_tunnel.h
2.6.28-stable review patch.  If anyone has any objections, please let us know.

------------------

From: David S. Miller <davem@davemloft.net>

[ Upstream commit 0afd4a21ba7d75e93fa79cf05d7a21774e149c0f ]

Reported by Andrew Walrond <andrew@walrond.org>

Changeset c19e654ddbe3831252f61e76a74d661e1a755530
("gre: Add netlink interface") added an include
of linux/ip.h to linux/if_tunnel.h

We can't really let that get exposed to userspace
because this conflicts with types defined in netinet/ip.h
which userland is almost certainly going to have included
either explicitly or implicitly.

So guard this include with a __KERNEL__ ifdef.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
include/linux/Kbuild | 2 +-
include/linux/if_tunnel.h | 3 +++
2 files changed, 4 insertions(+), 1 deletion(-)

--- a/include/linux/if_tunnel.h
+++ b/include/linux/if_tunnel.h
@@ -2,7 +2,10 @@
#define _IF_TUNNEL_H_

#include <linux/types.h>
+
+#ifdef __KERNEL__
#include <linux/ip.h>
+#endif

#define SIOCGETTUNNEL (SIOCDEVPRIVATE + 0)
#define SIOCADDTUNNEL (SIOCDEVPRIVATE + 1)
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -92,7 +92,6 @@ header-y += if_ppp.h
header-y += if_slip.h
header-y += if_strip.h
header-y += if_tun.h
-header-y += if_tunnel.h
header-y += in_route.h
header-y += ioctl.h
header-y += ip6_tunnel.h
@@ -241,6 +240,7 @@ unifdef-y += if_phonet.h
unifdef-y += if_pppol2tp.h
unifdef-y += if_pppox.h
unifdef-y += if_tr.h
+unifdef-y += if_tunnel.h
unifdef-y += if_vlan.h
unifdef-y += igmp.h
unifdef-y += inet_diag.h


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