netfilter: ctnetlink: fix timestamp support for new conntracks

This patch fixes the missing initialization of the start time if
the timestamp support is enabled.

libnetfilter_conntrack/utils# conntrack -E &
libnetfilter_conntrack/utils# ./conntrack_create
tcp      6 109 ESTABLISHED src=1.1.1.1 dst=2.2.2.2 sport=1025 dport=21 packets=0 bytes=0 [UNREPLIED] src=2.2.2.2 dst=1.1.1.1 sport=21 dport=1025 packets=0 bytes=0 mark=0 delta-time=1303296401 use=2

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>

net/netfilter/nf_conntrack_netlink.c

@@ -1334,6 +1334,7 @@ ctnetlink_create_conntrack(struct net *net, u16 zone,
 	struct nf_conn *ct;
 	int err = -EINVAL;
 	struct nf_conntrack_helper *helper;
+	struct nf_conn_tstamp *tstamp;
 
 	ct = nf_conntrack_alloc(net, zone, otuple, rtuple, GFP_ATOMIC);
 	if (IS_ERR(ct))
@@ -1451,6 +1452,9 @@ ctnetlink_create_conntrack(struct net *net, u16 zone,
 		__set_bit(IPS_EXPECTED_BIT, &ct->status);
 		ct->master = master_ct;
 	}
+	tstamp = nf_conn_tstamp_find(ct);
+	if (tstamp)
+		tstamp->start = ktime_to_ns(ktime_get_real());
 
 	add_timer(&ct->timeout);
 	nf_conntrack_hash_insert(ct);