netfilter: nf_nat: export NAT definitions to userspace

Export the NAT definitions to userspace. So far userspace (specifically,
iptables) has been copying the headers files from include/net. Also
rename some structures and definitions in preparation for IPv6 NAT.
Since these have never been officially exported, this doesn't affect
existing userspace code.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

4 files changed, 12 insertions, 15 deletions

diff --git a/include/net/netfilter/nf_conntrack_tuple.h b/include/net/netfilter/nf_conntrack_tuple.h
index 2f8fb77bfdd..aea3f8221be 100644
--- a/include/net/netfilter/nf_conntrack_tuple.h
+++ b/include/net/netfilter/nf_conntrack_tuple.h
@@ -12,7 +12,6 @@
 
 #include <linux/netfilter/x_tables.h>
 #include <linux/netfilter/nf_conntrack_tuple_common.h>
-#include <linux/netfilter_ipv4/nf_nat.h>
 #include <linux/list_nulls.h>
 
 /* A `tuple' is a structure containing the information to uniquely
diff --git a/include/net/netfilter/nf_nat.h b/include/net/netfilter/nf_nat.h
index b8872df7285..b4de990b55f 100644
--- a/include/net/netfilter/nf_nat.h
+++ b/include/net/netfilter/nf_nat.h
@@ -1,14 +1,12 @@
 #ifndef _NF_NAT_H
 #define _NF_NAT_H
 #include <linux/netfilter_ipv4.h>
-#include <linux/netfilter_ipv4/nf_nat.h>
+#include <linux/netfilter/nf_nat.h>
 #include <net/netfilter/nf_conntrack_tuple.h>
 
-#define NF_NAT_MAPPING_TYPE_MAX_NAMELEN 16
-
 enum nf_nat_manip_type {
-	IP_NAT_MANIP_SRC,
-	IP_NAT_MANIP_DST
+	NF_NAT_MANIP_SRC,
+	NF_NAT_MANIP_DST
 };
 
 /* SRC manip occurs POST_ROUTING or LOCAL_IN */
@@ -52,7 +50,7 @@ struct nf_conn_nat {
 
 /* Set up the info structure to map into this range. */
 extern unsigned int nf_nat_setup_info(struct nf_conn *ct,
-				      const struct nf_nat_range *range,
+				      const struct nf_nat_ipv4_range *range,
 				      enum nf_nat_manip_type maniptype);
 
 /* Is this tuple already taken? (not by us)*/
diff --git a/include/net/netfilter/nf_nat_core.h b/include/net/netfilter/nf_nat_core.h
index 3dc7b98effe..b13d8d18d59 100644
--- a/include/net/netfilter/nf_nat_core.h
+++ b/include/net/netfilter/nf_nat_core.h
@@ -20,7 +20,7 @@ extern int nf_nat_icmp_reply_translation(struct nf_conn *ct,
 static inline int nf_nat_initialized(struct nf_conn *ct,
 				     enum nf_nat_manip_type manip)
 {
-	if (manip == IP_NAT_MANIP_SRC)
+	if (manip == NF_NAT_MANIP_SRC)
 		return ct->status & IPS_SRC_NAT_DONE;
 	else
 		return ct->status & IPS_DST_NAT_DONE;
diff --git a/include/net/netfilter/nf_nat_protocol.h b/include/net/netfilter/nf_nat_protocol.h
index 93cc90d28e6..7156c002b59 100644
--- a/include/net/netfilter/nf_nat_protocol.h
+++ b/include/net/netfilter/nf_nat_protocol.h
@@ -4,7 +4,7 @@
 #include <net/netfilter/nf_nat.h>
 #include <linux/netfilter/nfnetlink_conntrack.h>
 
-struct nf_nat_range;
+struct nf_nat_ipv4_range;
 
 struct nf_nat_protocol {
 	/* Protocol number. */
@@ -30,15 +30,15 @@ struct nf_nat_protocol {
 	   possible.  Per-protocol part of tuple is initialized to the
 	   incoming packet. */
 	void (*unique_tuple)(struct nf_conntrack_tuple *tuple,
-			     const struct nf_nat_range *range,
+			     const struct nf_nat_ipv4_range *range,
 			     enum nf_nat_manip_type maniptype,
 			     const struct nf_conn *ct);
 
 	int (*range_to_nlattr)(struct sk_buff *skb,
-			       const struct nf_nat_range *range);
+			       const struct nf_nat_ipv4_range *range);
 
 	int (*nlattr_to_range)(struct nlattr *tb[],
-			       struct nf_nat_range *range);
+			       struct nf_nat_ipv4_range *range);
 };
 
 /* Protocol registration. */
@@ -61,14 +61,14 @@ extern bool nf_nat_proto_in_range(const struct nf_conntrack_tuple *tuple,
 				  const union nf_conntrack_man_proto *max);
 
 extern void nf_nat_proto_unique_tuple(struct nf_conntrack_tuple *tuple,
-				      const struct nf_nat_range *range,
+				      const struct nf_nat_ipv4_range *range,
 				      enum nf_nat_manip_type maniptype,
 				      const struct nf_conn *ct,
 				      u_int16_t *rover);
 
 extern int nf_nat_proto_range_to_nlattr(struct sk_buff *skb,
-					const struct nf_nat_range *range);
+					const struct nf_nat_ipv4_range *range);
 extern int nf_nat_proto_nlattr_to_range(struct nlattr *tb[],
-					struct nf_nat_range *range);
+					struct nf_nat_ipv4_range *range);
 
 #endif /*_NF_NAT_PROTO_H*/