netfilter: fix netns dependencies with conntrack templates

[karo-tx-linux.git] / net / netfilter / nf_conntrack_proto_generic.c

diff --git a/net/netfilter/nf_conntrack_proto_generic.c b/net/netfilter/nf_conntrack_proto_generic.c
index 60865f1103099383c4263a1a56e691b3c86c3720..2281be419a74b6d8abe0fd7da8d7e8b35d304600 100644 (file)
--- a/net/netfilter/nf_conntrack_proto_generic.c
+++ b/net/netfilter/nf_conntrack_proto_generic.c
@@ -90,7 +90,13 @@ static int generic_packet(struct nf_conn *ct,
 static bool generic_new(struct nf_conn *ct, const struct sk_buff *skb,
                        unsigned int dataoff, unsigned int *timeouts)
 {
-       return nf_generic_should_process(nf_ct_protonum(ct));
+       bool ret;
+
+       ret = nf_generic_should_process(nf_ct_protonum(ct));
+       if (!ret)
+               pr_warn_once("conntrack: generic helper won't handle protocol %d. Please consider loading the specific helper module.\n",
+                            nf_ct_protonum(ct));
+       return ret;
 }
 
 #if IS_ENABLED(CONFIG_NF_CT_NETLINK_TIMEOUT)