This is needed by net-core-flow_dissector.c Kernel < 2.6.25 and kernel
> 3.6 have this function.
Signed-off-by: Hauke Mehrtens <hauke@xxxxxxxxxx>
---
backport/backport-include/net/ipv6.h | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
create mode 100644 backport/backport-include/net/ipv6.h
diff --git a/backport/backport-include/net/ipv6.h b/backport/backport-include/net/ipv6.h
new file mode 100644
index 0000000..9a370a0
--- /dev/null
+++ b/backport/backport-include/net/ipv6.h
@@ -0,0 +1,23 @@
+#ifndef __BACKPORT_NET_IPV6_H
+#define __BACKPORT_NET_IPV6_H
+#include_next <net/ipv6.h>
+#include <linux/version.h>
+#include <net/addrconf.h>
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,6,0)) && (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,25))
+#define ipv6_addr_hash LINUX_BACKPORT(ipv6_addr_hash)
+static inline u32 ipv6_addr_hash(const struct in6_addr *a)
+{
+#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
+ const unsigned long *ul = (const unsigned long *)a;
+ unsigned long x = ul[0] ^ ul[1];
+
+ return (u32)(x ^ (x >> 32));
+#else
+ return (__force u32)(a->s6_addr32[0] ^ a->s6_addr32[1] ^
+ a->s6_addr32[2] ^ a->s6_addr32[3]);
+#endif
+}
+#endif
+
+#endif /* __BACKPORT_NET_IPV6_H */
--
1.7.10.4
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