[NETFILTER]: x_tables: add missing try to load conntrack from match/targets

CLUSTERIP, CONNMARK, CONNSECMARK, and connbytes need ip_conntrack or
layer 3 protocol module of nf_conntrack.

Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 0 deletions

diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c
index fef56ae61abe..b1c11160b9de 100644
--- a/net/ipv4/netfilter/ipt_CLUSTERIP.c
+++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c
@@ -447,6 +447,12 @@ checkentry(const char *tablename,
                 cipinfo->config = config;
         }
 
+        if (nf_ct_l3proto_try_module_get(target->family) < 0) {
+                printk(KERN_WARNING "can't load conntrack support for "
+                                    "proto=%d\n", target->family);
+                return 0;
+        }
+
         return 1;
 }
 
@@ -460,6 +466,8 @@ static void destroy(const struct xt_target *target, void *targinfo)
         clusterip_config_entry_put(cipinfo->config);
 
         clusterip_config_put(cipinfo->config);
+
+        nf_ct_l3proto_module_put(target->family);
 }
 
 static struct ipt_target clusterip_tgt = {