ipv6: 64bit version of ipv6_addr_set().

		pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b);

}

static inline void __ipv6_addr_set_half(__be32 *addr,

					__be32 wh, __be32 wl)

{

#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64

#if defined(__BIG_ENDIAN)

	if (__builtin_constant_p(wh) && __builtin_constant_p(wl)) {

		*(__force u64 *)addr = ((__force u64)(wh) << 32 | (__force u64)(wl));

		return;

	}

#elif defined(__LITTLE_ENDIAN)

	if (__builtin_constant_p(wl) && __builtin_constant_p(wh)) {

		*(__force u64 *)addr = ((__force u64)(wl) << 32 | (__force u64)(wh));

		return;

	}

#endif

#endif

	addr[0] = wh;

	addr[1] = wl;

}

static inline void ipv6_addr_set(struct in6_addr *addr, 

				     __be32 w1, __be32 w2,

				     __be32 w3, __be32 w4)

{

	addr->s6_addr32[0] = w1;

	addr->s6_addr32[1] = w2;

	addr->s6_addr32[2] = w3;

	addr->s6_addr32[3] = w4;

	__ipv6_addr_set_half(&addr->s6_addr32[0], w1, w2);

	__ipv6_addr_set_half(&addr->s6_addr32[2], w3, w4);

}

static inline bool ipv6_addr_equal(const struct in6_addr *a1,