ipv6: Optimize ipv6_addr_is_ll_all_{nodes,routers}().
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/addrconf.h b/include/net/addrconf.h
index 9dc5efc..6c58d50 100644
--- a/include/net/addrconf.h
+++ b/include/net/addrconf.h
@@ -288,16 +288,26 @@
static inline bool ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr)
{
+#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
+ __u64 *p = (__u64 *)addr;
+ return ((p[0] ^ cpu_to_be64(0xff02000000000000UL)) | (p[1] ^ cpu_to_be64(1))) == 0UL;
+#else
return ((addr->s6_addr32[0] ^ htonl(0xff020000)) |
addr->s6_addr32[1] | addr->s6_addr32[2] |
(addr->s6_addr32[3] ^ htonl(0x00000001))) == 0;
+#endif
}
static inline bool ipv6_addr_is_ll_all_routers(const struct in6_addr *addr)
{
+#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
+ __u64 *p = (__u64 *)addr;
+ return ((p[0] ^ cpu_to_be64(0xff02000000000000UL)) | (p[1] ^ cpu_to_be64(2))) == 0UL;
+#else
return ((addr->s6_addr32[0] ^ htonl(0xff020000)) |
addr->s6_addr32[1] | addr->s6_addr32[2] |
(addr->s6_addr32[3] ^ htonl(0x00000002))) == 0;
+#endif
}
static inline bool ipv6_addr_is_isatap(const struct in6_addr *addr)