netfilter: nf_conntrack_defrag: check socket type before touching nodefrag flag

[net-next-2.6.git] / net / ipv4 / netfilter / nf_defrag_ipv4.c

diff --git a/net/ipv4/netfilter/nf_defrag_ipv4.c b/net/ipv4/netfilter/nf_defrag_ipv4.c
index eab8de32f200af74828bbf0fb3187ff578451e9b..f3a9b42b16c620a7f569e00039beea13bc75bc3c 100644 (file)
--- a/net/ipv4/netfilter/nf_defrag_ipv4.c
+++ b/net/ipv4/netfilter/nf_defrag_ipv4.c
@@ -66,9 +66,11 @@ static unsigned int ipv4_conntrack_defrag(unsigned int hooknum,
                                          const struct net_device *out,
                                          int (*okfn)(struct sk_buff *))
 {
+       struct sock *sk = skb->sk;
        struct inet_sock *inet = inet_sk(skb->sk);
 
-       if (inet && inet->nodefrag)
+       if (sk && (sk->sk_family == PF_INET) &&
+           inet->nodefrag)
                return NF_ACCEPT;
 
 #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)