ipv6: Make ipv6_addr_is_XXX() return boolean.

ipv6_addr_is_{multicast,ll_all_nodes,ll_all_routers,isatap}()
return boolean.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/addrconf.h

@@ -281,26 +281,26 @@ static inline void addrconf_addr_solict_mult(const struct in6_addr *addr,
 		      htonl(0xFF000000) | addr->s6_addr32[3]);
 }
 
-static inline int ipv6_addr_is_multicast(const struct in6_addr *addr)
+static inline bool ipv6_addr_is_multicast(const struct in6_addr *addr)
 {
 	return (addr->s6_addr32[0] & htonl(0xFF000000)) == htonl(0xFF000000);
 }
 
-static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr)
+static inline bool ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr)
 {
 	return ((addr->s6_addr32[0] ^ htonl(0xff020000)) |
 		addr->s6_addr32[1] | addr->s6_addr32[2] |
 		(addr->s6_addr32[3] ^ htonl(0x00000001))) == 0;
 }
 
-static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr)
+static inline bool ipv6_addr_is_ll_all_routers(const struct in6_addr *addr)
 {
 	return ((addr->s6_addr32[0] ^ htonl(0xff020000)) |
 		addr->s6_addr32[1] | addr->s6_addr32[2] |
 		(addr->s6_addr32[3] ^ htonl(0x00000002))) == 0;
 }
 
-static inline int ipv6_addr_is_isatap(const struct in6_addr *addr)
+static inline bool ipv6_addr_is_isatap(const struct in6_addr *addr)
 {
 	return (addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE);
 }