From 125a77ed9fbd21d1277f53e9ed6b39ad3d34e613 Mon Sep 17 00:00:00 2001
From: Brian Haley <brian.haley@hp.com>
Date: Wed, 7 Oct 2009 13:57:10 -0700
Subject: [PATCH] IPv6: Fix 6RD build error
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Fix build error introduced in commit fa857afcf - ipv6 sit: 6rd
(IPv6 Rapid Deployment) Support.  Struct in6_addr is the issue.
I'm only seeing this on x86_64 systems, not on 32-bit with same
IPv6 config options, so it could be there's a missing forward
declaration somewhere, but including the correct header file
fixes the problem too.

  CC [M]  net/ipv6/ip6_tunnel.o
In file included from net/ipv6/ip6_tunnel.c:31:
include/linux/if_tunnel.h:59: error: field ‘prefix’ has incomplete type
make[2]: *** [net/ipv6/ip6_tunnel.o] Error 1
make[1]: *** [net/ipv6] Error 2

Signed-off-by: Brian Haley <brian.haley@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 include/linux/if_tunnel.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/if_tunnel.h b/include/linux/if_tunnel.h
index c53c8e016940..8d76cb4c86fa 100644
--- a/include/linux/if_tunnel.h
+++ b/include/linux/if_tunnel.h
@@ -5,6 +5,7 @@
 
 #ifdef __KERNEL__
 #include <linux/ip.h>
+#include <linux/in6.h>
 #endif
 
 #define SIOCGETTUNNEL   (SIOCDEVPRIVATE + 0)
-- 
2.20.1