[NETFILTER]: Move ip6_masked_addrcmp to include/net/ipv6.h
Replace netfilter's ip6_masked_addrcmp by a more efficient version
in include/net/ipv6.h to make it usable without module dependencies.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 3b1d963..c893a1c 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -282,6 +282,18 @@
return memcmp((const void *) a1, (const void *) a2, sizeof(struct in6_addr));
}
+static inline int
+ipv6_masked_addr_cmp(const struct in6_addr *a1, const struct in6_addr *m,
+ const struct in6_addr *a2)
+{
+ unsigned int i;
+
+ for (i = 0; i < 4; i++)
+ if ((a1->s6_addr32[i] ^ a2->s6_addr32[i]) & m->s6_addr32[i])
+ return 1;
+ return 0;
+}
+
static inline void ipv6_addr_copy(struct in6_addr *a1, const struct in6_addr *a2)
{
memcpy((void *) a1, (const void *) a2, sizeof(struct in6_addr));