[NETFILTER] ip_conntrack: Update event cache when status changes

The GRE, SCTP and TCP protocol helpers did not call
ip_conntrack_event_cache() when updating ct->status.  This patch adds
the respective calls.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/netfilter/ip_conntrack_proto_gre.c

@@ -247,6 +247,7 @@ static int gre_packet(struct ip_conntrack *ct,
 				   ct->proto.gre.stream_timeout);
 		/* Also, more likely to be important, and not a probe. */
 		set_bit(IPS_ASSURED_BIT, &ct->status);
+		ip_conntrack_event_cache(IPCT_STATUS, skb);
 	} else
 		ip_ct_refresh_acct(ct, conntrackinfo, skb,
 				   ct->proto.gre.timeout);

net/ipv4/netfilter/ip_conntrack_proto_sctp.c

@@ -416,6 +416,7 @@ static int sctp_packet(struct ip_conntrack *conntrack,
 		&& newconntrack == SCTP_CONNTRACK_ESTABLISHED) {
 		DEBUGP("Setting assured bit\n");
 		set_bit(IPS_ASSURED_BIT, &conntrack->status);
+		ip_conntrack_event_cache(IPCT_STATUS, skb);
 	}
 
 	return NF_ACCEPT;

net/ipv4/netfilter/ip_conntrack_proto_tcp.c

@@ -1014,7 +1014,8 @@ static int tcp_packet(struct ip_conntrack *conntrack,
 		/* Set ASSURED if we see see valid ack in ESTABLISHED 
 		   after SYN_RECV or a valid answer for a picked up 
 		   connection. */
-			set_bit(IPS_ASSURED_BIT, &conntrack->status);
+		set_bit(IPS_ASSURED_BIT, &conntrack->status);
+		ip_conntrack_event_cache(IPCT_STATUS, skb);
 	}
 	ip_ct_refresh_acct(conntrack, ctinfo, skb, timeout);