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-rw-r--r--net/netfilter/xt_cluster.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/net/netfilter/xt_cluster.c b/net/netfilter/xt_cluster.c
index ad5bd89..6c48476 100644
--- a/net/netfilter/xt_cluster.c
+++ b/net/netfilter/xt_cluster.c
@@ -58,6 +58,13 @@ xt_cluster_hash(const struct nf_conn *ct,
}
static inline bool
+xt_cluster_ipv6_is_multicast(const struct in6_addr *addr)
+{
+ __be32 st = addr->s6_addr32[0];
+ return ((st & htonl(0xFF000000)) == htonl(0xFF000000));
+}
+
+static inline bool
xt_cluster_is_multicast_addr(const struct sk_buff *skb, u_int8_t family)
{
bool is_multicast = false;
@@ -67,8 +74,8 @@ xt_cluster_is_multicast_addr(const struct sk_buff *skb, u_int8_t family)
is_multicast = ipv4_is_multicast(ip_hdr(skb)->daddr);
break;
case NFPROTO_IPV6:
- is_multicast = ipv6_addr_type(&ipv6_hdr(skb)->daddr) &
- IPV6_ADDR_MULTICAST;
+ is_multicast =
+ xt_cluster_ipv6_is_multicast(&ipv6_hdr(skb)->daddr);
break;
default:
WARN_ON(1);