netfilter: nf_ct_tcp: extend log message for invalid ignored packets
Extend log message if packets are ignored to include the TCP state, ie.
replace:
[ 3968.070196] nf_ct_tcp: invalid packet ignored IN= OUT= SRC=...
by:
[ 3968.070196] nf_ct_tcp: invalid packet ignored in state ESTABLISHED IN= OUT= SRC=...
This information is useful to know in what state we were while ignoring the
packet.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acked-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
index 4dfbfa8..21ff1a9 100644
--- a/net/netfilter/nf_conntrack_proto_tcp.c
+++ b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -952,7 +952,8 @@
spin_unlock_bh(&ct->lock);
if (LOG_INVALID(net, IPPROTO_TCP))
nf_log_packet(pf, 0, skb, NULL, NULL, NULL,
- "nf_ct_tcp: invalid packet ignored ");
+ "nf_ct_tcp: invalid packet ignored in "
+ "state %s ", tcp_conntrack_names[old_state]);
return NF_ACCEPT;
case TCP_CONNTRACK_MAX:
/* Invalid packet */