netfilter: log invalid new icmpv6 packet with nf_log_packet()

This patch adds a logging message for invalid new icmpv6 packet.

Signed-off-by: Eric Leblond <eric@inl.fr>
Signed-off-by: Patrick McHardy <kaber@trash.net>

diff --git a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
index c323643..165b256 100644 (file)
--- a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
@@ -126,6 +126,10 @@ static bool icmpv6_new(struct nf_conn *ct, const struct sk_buff *skb,
                pr_debug("icmpv6: can't create new conn with type %u\n",
                         type + 128);
                nf_ct_dump_tuple_ipv6(&ct->tuplehash[0].tuple);
+               if (LOG_INVALID(nf_ct_net(ct), IPPROTO_ICMPV6))
+                       nf_log_packet(PF_INET6, 0, skb, NULL, NULL, NULL,
+                                     "nf_ct_icmpv6: invalid new with type %d ",
+                                     type + 128);
                return false;
        }
        atomic_set(&ct->proto.icmp.count, 0);