netdev - [PATCH net-next 4/8] netfilter: nf_nat: register ftp NAT helper.

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Message-ID: <20190326205715.22288-5-fbl@sysclose.org>
Date:   Tue, 26 Mar 2019 17:57:11 -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 4/8] netfilter: nf_nat: register ftp NAT helper.

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

diff --git a/net/netfilter/nf_nat_ftp.c b/net/netfilter/nf_nat_ftp.c
index 19f5739fd5e2..70fddcddad54 100644
--- a/net/netfilter/nf_nat_ftp.c
+++ b/net/netfilter/nf_nat_ftp.c
@@ -28,6 +28,8 @@ MODULE_ALIAS_NFCT_HELPER_NAT("ftp");
 
 /* FIXME: Time out? --RR */
 
+static struct nf_conntrack_helper_nat helper_nat_ftp;
+
 static int nf_nat_ftp_fmt_cmd(struct nf_conn *ct, enum nf_ct_ftp_type type,
 			      char *buffer, size_t buflen,
 			      union nf_inet_addr *addr, u16 port)
@@ -124,6 +126,7 @@ static unsigned int nf_nat_ftp(struct sk_buff *skb,
 
 static void __exit nf_nat_ftp_fini(void)
 {
+	nf_conntrack_helper_nat_unregister(&helper_nat_ftp);
 	RCU_INIT_POINTER(nf_nat_ftp_hook, NULL);
 	synchronize_rcu();
 }
@@ -131,6 +134,9 @@ static void __exit nf_nat_ftp_fini(void)
 static int __init nf_nat_ftp_init(void)
 {
 	BUG_ON(nf_nat_ftp_hook != NULL);
+	nf_ct_helper_nat_init(&helper_nat_ftp,
+			      NF_CT_NAT_HELPER_MOD_NAME("ftp"), THIS_MODULE);
+	nf_conntrack_helper_nat_register(&helper_nat_ftp);
 	RCU_INIT_POINTER(nf_nat_ftp_hook, nf_nat_ftp);
 	return 0;
 }
-- 
2.20.1