[CTNETLINK] dump counters iif connection ended or counters filled up

This patch makes ctnetlink to dump counters iif connection reaches the
destroy state or altenatively if counters filled up.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

Index: net-2.6/net/ipv4/netfilter/ip_conntrack_netlink.c
===================================================================
--- net-2.6.orig/net/ipv4/netfilter/ip_conntrack_netlink.c	2006-07-06 19:52:54.000000000 +0200
+++ net-2.6/net/ipv4/netfilter/ip_conntrack_netlink.c	2006-07-06 19:54:00.000000000 +0200
@@ -381,8 +381,10 @@ static int ctnetlink_conntrack_event(str
 	    && ctnetlink_dump_helpinfo(skb, ct) < 0)
 		goto nfattr_failure;
 
-	if (ctnetlink_dump_counters(skb, ct, IP_CT_DIR_ORIGINAL) < 0 ||
-	    ctnetlink_dump_counters(skb, ct, IP_CT_DIR_REPLY) < 0)
+	/* this connection has died or counters wrapped around */
+	if ((events & IPCT_DESTROY || events & IPCT_COUNTER_FILLING)
+	    && (ctnetlink_dump_counters(skb, ct, IP_CT_DIR_ORIGINAL) < 0 ||
+	        ctnetlink_dump_counters(skb, ct, IP_CT_DIR_REPLY) < 0))
 		goto nfattr_failure;
 
 	if (events & IPCT_MARK
Index: net-2.6/net/netfilter/nf_conntrack_netlink.c
===================================================================
--- net-2.6.orig/net/netfilter/nf_conntrack_netlink.c	2006-07-06 19:54:02.000000000 +0200
+++ net-2.6/net/netfilter/nf_conntrack_netlink.c	2006-07-06 19:54:35.000000000 +0200
@@ -391,8 +391,10 @@ static int ctnetlink_conntrack_event(str
 	    && ctnetlink_dump_helpinfo(skb, ct) < 0)
 		goto nfattr_failure;
 
-	if (ctnetlink_dump_counters(skb, ct, IP_CT_DIR_ORIGINAL) < 0 ||
-	    ctnetlink_dump_counters(skb, ct, IP_CT_DIR_REPLY) < 0)
+	/* this connection has died or counters wrapped around */
+	if ((events & IPCT_DESTROY || events & IPCT_COUNTER_FILLING)
+	     && (ctnetlink_dump_counters(skb, ct, IP_CT_DIR_ORIGINAL) < 0 ||
+		 ctnetlink_dump_counters(skb, ct, IP_CT_DIR_REPLY) < 0))
 		goto nfattr_failure;
 
 	if (events & IPCT_MARK