[NETFILTER]: nf_nat: move NAT declarations from nf_conntrack_ipv4.h to nf_nat.h

Signed-off-by: NYasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: NPatrick McHardy <kaber@trash.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/net/netfilter/ipv4/nf_conntrack_ipv4.h

@@ -9,29 +9,8 @@
 #ifndef _NF_CONNTRACK_IPV4_H
 #define _NF_CONNTRACK_IPV4_H
 
-#ifdef CONFIG_NF_NAT_NEEDED
-#include <net/netfilter/nf_nat.h>
-#include <linux/netfilter/nf_conntrack_pptp.h>
-
-/* per conntrack: nat application helper private data */
-union nf_conntrack_nat_help {
-        /* insert nat helper private data here */
-	struct nf_nat_pptp nat_pptp_info;
-};
-
-struct nf_conn_nat {
-	struct nf_nat_info info;
-	union nf_conntrack_nat_help help;
-#if defined(CONFIG_IP_NF_TARGET_MASQUERADE) || \
-	defined(CONFIG_IP_NF_TARGET_MASQUERADE_MODULE)
-	int masq_index;
-#endif
-};
-#endif /* CONFIG_NF_NAT_NEEDED */
-
 /* Returns new sk_buff, or NULL */
-struct sk_buff *
-nf_ct_ipv4_ct_gather_frags(struct sk_buff *skb);
+struct sk_buff *nf_ct_ipv4_ct_gather_frags(struct sk_buff *skb);
 
 extern struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp4;
 extern struct nf_conntrack_l4proto nf_conntrack_l4proto_udp4;

include/net/netfilter/nf_conntrack.h

@@ -280,6 +280,7 @@ nf_conntrack_unregister_cache(u_int32_t features);
  * nat: nf_conn .. nf_conn_nat, nf_conn .. nf_conn_nat .. nf_conn help
  */
 #ifdef CONFIG_NF_NAT_NEEDED
+#include <net/netfilter/nf_nat.h>
 static inline struct nf_conn_nat *nfct_nat(const struct nf_conn *ct)
 {
 	unsigned int offset = sizeof(struct nf_conn);

include/net/netfilter/nf_nat.h

@@ -51,6 +51,7 @@ struct nf_nat_multi_range_compat
 
 #ifdef __KERNEL__
 #include <linux/list.h>
+#include <linux/netfilter/nf_conntrack_pptp.h>
 
 /* The structure embedded in the conntrack structure. */
 struct nf_nat_info
@@ -59,6 +60,23 @@ struct nf_nat_info
 	struct nf_nat_seq seq[IP_CT_DIR_MAX];
 };
 
+/* per conntrack: nat application helper private data */
+union nf_conntrack_nat_help
+{
+	/* insert nat helper private data here */
+	struct nf_nat_pptp nat_pptp_info;
+};
+
+struct nf_conn_nat
+{
+	struct nf_nat_info info;
+	union nf_conntrack_nat_help help;
+#if defined(CONFIG_IP_NF_TARGET_MASQUERADE) || \
+    defined(CONFIG_IP_NF_TARGET_MASQUERADE_MODULE)
+	int masq_index;
+#endif
+};
+
 struct nf_conn;
 
 /* Set up the info structure to map into this range. */

include/net/netfilter/nf_nat_core.h

@@ -2,6 +2,7 @@
 #define _NF_NAT_CORE_H
 #include <linux/list.h>
 #include <net/netfilter/nf_conntrack.h>
+#include <net/netfilter/nf_nat.h>
 
 /* This header used to share core functionality between the standalone
    NAT module, and the compatibility layer's use of NAT for masquerading. */