netdev - [PATCH net-next 7/8] netfilter: nf_nat: register tftp NAT helper.

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Date:   Tue, 26 Mar 2019 17:57:14 -0300
From:   Flavio Leitner <fbl@...close.org>
To:     netdev@...r.kernel.org
Cc:     Joe Stringer <joe@....org>, Pravin B Shelar <pshelar@....org>,
        dev@...nvswitch.org, netfilter-devel@...r.kernel.org
Subject: [PATCH net-next 7/8] netfilter: nf_nat: register tftp NAT helper.

Signed-off-by: Flavio Leitner <fbl@...close.org>
---
 net/netfilter/nf_nat_tftp.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/net/netfilter/nf_nat_tftp.c b/net/netfilter/nf_nat_tftp.c
index 51673aa6e1dc..5a7af30e3e02 100644
--- a/net/netfilter/nf_nat_tftp.c
+++ b/net/netfilter/nf_nat_tftp.c
@@ -18,6 +18,8 @@ MODULE_DESCRIPTION("TFTP NAT helper");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_NFCT_HELPER_NAT("tftp");
 
+static struct nf_conntrack_helper_nat helper_nat_tftp;
+
 static unsigned int help(struct sk_buff *skb,
 			 enum ip_conntrack_info ctinfo,
 			 struct nf_conntrack_expect *exp)
@@ -37,6 +39,7 @@ static unsigned int help(struct sk_buff *skb,
 
 static void __exit nf_nat_tftp_fini(void)
 {
+	nf_conntrack_helper_nat_unregister(&helper_nat_tftp);
 	RCU_INIT_POINTER(nf_nat_tftp_hook, NULL);
 	synchronize_rcu();
 }
@@ -44,6 +47,9 @@ static void __exit nf_nat_tftp_fini(void)
 static int __init nf_nat_tftp_init(void)
 {
 	BUG_ON(nf_nat_tftp_hook != NULL);
+	nf_ct_helper_nat_init(&helper_nat_tftp,
+			      NF_CT_NAT_HELPER_MOD_NAME("tftp"), THIS_MODULE);
+	nf_conntrack_helper_nat_register(&helper_nat_tftp);
 	RCU_INIT_POINTER(nf_nat_tftp_hook, help);
 	return 0;
 }
-- 
2.20.1