1 files changed, 60 insertions, 0 deletions
diff --git a/backport-include/net/ipv6.h b/backport-include/net/ipv6.h
new file mode 100644
index 0000000..7416d6b
--- /dev/null
+++ b/backport-include/net/ipv6.h
@@ -0,0 +1,60 @@
+#ifndef __BACKPORT_NET_IPV6_H
+#define __BACKPORT_NET_IPV6_H
+#include_next <net/ipv6.h>
+#include <linux/version.h>
+#include <net/addrconf.h>
+#include <net/inet_frag.h>
+
+#if LINUX_VERSION_IS_LESS(3,7,0)
+/*
+ *	Equivalent of ipv4 struct ip
+ */
+struct frag_queue {
+	struct inet_frag_queue  q;
+
+	__be32                  id;             /* fragment id          */
+	u32                     user;
+	struct in6_addr         saddr;
+	struct in6_addr         daddr;
+
+	int                     iif;
+	unsigned int            csum;
+	__u16                   nhoffset;
+};
+#endif /* LINUX_VERSION_IS_LESS(3,7,0) */
+
+#if LINUX_VERSION_IS_LESS(3,6,0)
+#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
+
+#if LINUX_VERSION_IS_LESS(4,5,0)
+#define ipv6_addr_prefix_copy LINUX_BACKPORT(ipv6_addr_prefix_copy)
+static inline void ipv6_addr_prefix_copy(struct in6_addr *addr,
+					 const struct in6_addr *pfx,
+					 int plen)
+{
+	/* caller must guarantee 0 <= plen <= 128 */
+	int o = plen >> 3,
+	    b = plen & 0x7;
+
+	memcpy(addr->s6_addr, pfx, o);
+	if (b != 0) {
+		addr->s6_addr[o] &= ~(0xff00 >> b);
+		addr->s6_addr[o] |= (pfx->s6_addr[o] & (0xff00 >> b));
+	}
+}
+#endif
+
+#endif /* __BACKPORT_NET_IPV6_H */