[IPV6]: Make ipv6_addr_type() more generic so that we can use it for source address selection.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 16 insertions, 3 deletions

diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 98661fa4fc7..6addb4d464d 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -252,12 +252,25 @@ typedef int		(*inet_getfrag_t) (const void *data,
                                            char *,
                                            unsigned int, unsigned int);
 
-
-extern int              ipv6_addr_type(const struct in6_addr *addr);
+extern int __ipv6_addr_type(const struct in6_addr *addr);
+static inline int ipv6_addr_type(const struct in6_addr *addr)
+{
+        return __ipv6_addr_type(addr) & 0xffff;
+}
 
 static inline int ipv6_addr_scope(const struct in6_addr *addr)
 {
-        return ipv6_addr_type(addr) & IPV6_ADDR_SCOPE_MASK;
+        return __ipv6_addr_type(addr) & IPV6_ADDR_SCOPE_MASK;
+}
+
+static inline int __ipv6_addr_src_scope(int type)
+{
+        return (type == IPV6_ADDR_ANY ? __IPV6_ADDR_SCOPE_INVALID : (type >> 16));
+}
+
+static inline int ipv6_addr_src_scope(const struct in6_addr *addr)
+{
+        return __ipv6_addr_src_scope(__ipv6_addr_type(addr));
 }
 
 static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2)