From: Greg KH on
2.6.33-stable review patch. If anyone has any objections, please let us know.

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

From: Paulius Zaleckas <paulius.zaleckas(a)gmail.com>

commit 9bf35c8dddd56f7f247a27346f74f5adc18071f4 upstream.

When compiling userspace application which includes
if_tunnel.h and uses GRE_* defines you will get undefined
reference to __cpu_to_be16.

Fix this by adding missing #include <asm/byteorder.h>

Signed-off-by: Paulius Zaleckas <paulius.zaleckas(a)gmail.com>
Signed-off-by: David S. Miller <davem(a)davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)suse.de>

---
include/linux/if_tunnel.h | 1 +
1 file changed, 1 insertion(+)

--- a/include/linux/if_tunnel.h
+++ b/include/linux/if_tunnel.h
@@ -2,6 +2,7 @@
#define _IF_TUNNEL_H_

#include <linux/types.h>
+#include <asm/byteorder.h>

#ifdef __KERNEL__
#include <linux/ip.h>


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