Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6

21 files changed, 398 insertions, 222 deletions

diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
index 0c5eb7e..48cfe51 100644
--- a/include/linux/netfilter.h
+++ b/include/linux/netfilter.h
@@ -5,13 +5,11 @@
 #include <linux/init.h>
 #include <linux/skbuff.h>
 #include <linux/net.h>
-#include <linux/netdevice.h>
 #include <linux/if.h>
 #include <linux/in.h>
 #include <linux/in6.h>
 #include <linux/wait.h>
 #include <linux/list.h>
-#include <net/net_namespace.h>
 #endif
 #include <linux/types.h>
 #include <linux/compiler.h>
@@ -52,6 +50,16 @@ enum nf_inet_hooks {
 	NF_INET_NUMHOOKS
 };
 
+enum {
+	NFPROTO_UNSPEC =  0,
+	NFPROTO_IPV4   =  2,
+	NFPROTO_ARP    =  3,
+	NFPROTO_BRIDGE =  7,
+	NFPROTO_IPV6   = 10,
+	NFPROTO_DECNET = 12,
+	NFPROTO_NUMPROTO,
+};
+
 union nf_inet_addr {
 	__u32		all[4];
 	__be32		ip;
@@ -92,8 +100,8 @@ struct nf_hook_ops
 	/* User fills in from here down. */
 	nf_hookfn *hook;
 	struct module *owner;
-	int pf;
-	int hooknum;
+	u_int8_t pf;
+	unsigned int hooknum;
 	/* Hooks are ordered in ascending priority. */
 	int priority;
 };
@@ -102,7 +110,7 @@ struct nf_sockopt_ops
 {
 	struct list_head list;
 
-	int pf;
+	u_int8_t pf;
 
 	/* Non-inclusive ranges: use 0/0/NULL to never get called. */
 	int set_optmin;
@@ -138,9 +146,9 @@ extern struct ctl_path nf_net_netfilter_sysctl_path[];
 extern struct ctl_path nf_net_ipv4_netfilter_sysctl_path[];
 #endif /* CONFIG_SYSCTL */
 
-extern struct list_head nf_hooks[NPROTO][NF_MAX_HOOKS];
+extern struct list_head nf_hooks[NFPROTO_NUMPROTO][NF_MAX_HOOKS];
 
-int nf_hook_slow(int pf, unsigned int hook, struct sk_buff *skb,
+int nf_hook_slow(u_int8_t pf, unsigned int hook, struct sk_buff *skb,
 		 struct net_device *indev, struct net_device *outdev,
 		 int (*okfn)(struct sk_buff *), int thresh);
 
@@ -151,7 +159,7 @@ int nf_hook_slow(int pf, unsigned int hook, struct sk_buff *skb,
  *	okfn must be invoked by the caller in this case.  Any other return
  *	value indicates the packet has been consumed by the hook.
  */
-static inline int nf_hook_thresh(int pf, unsigned int hook,
+static inline int nf_hook_thresh(u_int8_t pf, unsigned int hook,
 				 struct sk_buff *skb,
 				 struct net_device *indev,
 				 struct net_device *outdev,
@@ -167,7 +175,7 @@ static inline int nf_hook_thresh(int pf, unsigned int hook,
 	return nf_hook_slow(pf, hook, skb, indev, outdev, okfn, thresh);
 }
 
-static inline int nf_hook(int pf, unsigned int hook, struct sk_buff *skb,
+static inline int nf_hook(u_int8_t pf, unsigned int hook, struct sk_buff *skb,
 			  struct net_device *indev, struct net_device *outdev,
 			  int (*okfn)(struct sk_buff *))
 {
@@ -212,14 +220,14 @@ __ret;})
 	NF_HOOK_THRESH(pf, hook, skb, indev, outdev, okfn, INT_MIN)
 
 /* Call setsockopt() */
-int nf_setsockopt(struct sock *sk, int pf, int optval, char __user *opt, 
+int nf_setsockopt(struct sock *sk, u_int8_t pf, int optval, char __user *opt,
 		  int len);
-int nf_getsockopt(struct sock *sk, int pf, int optval, char __user *opt,
+int nf_getsockopt(struct sock *sk, u_int8_t pf, int optval, char __user *opt,
 		  int *len);
 
-int compat_nf_setsockopt(struct sock *sk, int pf, int optval,
+int compat_nf_setsockopt(struct sock *sk, u_int8_t pf, int optval,
 		char __user *opt, int len);
-int compat_nf_getsockopt(struct sock *sk, int pf, int optval,
+int compat_nf_getsockopt(struct sock *sk, u_int8_t pf, int optval,
 		char __user *opt, int *len);
 
 /* Call this before modifying an existing packet: ensures it is
@@ -247,7 +255,7 @@ struct nf_afinfo {
 	int		route_key_size;
 };
 
-extern const struct nf_afinfo *nf_afinfo[NPROTO];
+extern const struct nf_afinfo *nf_afinfo[NFPROTO_NUMPROTO];
 static inline const struct nf_afinfo *nf_get_afinfo(unsigned short family)
 {
 	return rcu_dereference(nf_afinfo[family]);
@@ -292,7 +300,7 @@ extern void nf_unregister_afinfo(const struct nf_afinfo *afinfo);
 extern void (*ip_nat_decode_session)(struct sk_buff *, struct flowi *);
 
 static inline void
-nf_nat_decode_session(struct sk_buff *skb, struct flowi *fl, int family)
+nf_nat_decode_session(struct sk_buff *skb, struct flowi *fl, u_int8_t family)
 {
 #ifdef CONFIG_NF_NAT_NEEDED
 	void (*decodefn)(struct sk_buff *, struct flowi *);
@@ -315,7 +323,7 @@ extern struct proc_dir_entry *proc_net_netfilter;
 #else /* !CONFIG_NETFILTER */
 #define NF_HOOK(pf, hook, skb, indev, outdev, okfn) (okfn)(skb)
 #define NF_HOOK_COND(pf, hook, skb, indev, outdev, okfn, cond) (okfn)(skb)
-static inline int nf_hook_thresh(int pf, unsigned int hook,
+static inline int nf_hook_thresh(u_int8_t pf, unsigned int hook,
 				 struct sk_buff *skb,
 				 struct net_device *indev,
 				 struct net_device *outdev,
@@ -324,7 +332,7 @@ static inline int nf_hook_thresh(int pf, unsigned int hook,
 {
 	return okfn(skb);
 }
-static inline int nf_hook(int pf, unsigned int hook, struct sk_buff *skb,
+static inline int nf_hook(u_int8_t pf, unsigned int hook, struct sk_buff *skb,
 			  struct net_device *indev, struct net_device *outdev,
 			  int (*okfn)(struct sk_buff *))
 {
@@ -332,7 +340,9 @@ static inline int nf_hook(int pf, unsigned int hook, struct sk_buff *skb,
 }
 struct flowi;
 static inline void
-nf_nat_decode_session(struct sk_buff *skb, struct flowi *fl, int family) {}
+nf_nat_decode_session(struct sk_buff *skb, struct flowi *fl, u_int8_t family)
+{
+}
 #endif /*CONFIG_NETFILTER*/
 
 #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
@@ -343,56 +353,5 @@ extern void (*nf_ct_destroy)(struct nf_conntrack *);
 static inline void nf_ct_attach(struct sk_buff *new, struct sk_buff *skb) {}
 #endif
 
-static inline struct net *nf_pre_routing_net(const struct net_device *in,
-					     const struct net_device *out)
-{
-#ifdef CONFIG_NET_NS
-	return in->nd_net;
-#else
-	return &init_net;
-#endif
-}
-
-static inline struct net *nf_local_in_net(const struct net_device *in,
-					  const struct net_device *out)
-{
-#ifdef CONFIG_NET_NS
-	return in->nd_net;
-#else
-	return &init_net;
-#endif
-}
-
-static inline struct net *nf_forward_net(const struct net_device *in,
-					 const struct net_device *out)
-{
-#ifdef CONFIG_NET_NS
-	BUG_ON(in->nd_net != out->nd_net);
-	return in->nd_net;
-#else
-	return &init_net;
-#endif
-}
-
-static inline struct net *nf_local_out_net(const struct net_device *in,
-					   const struct net_device *out)
-{
-#ifdef CONFIG_NET_NS
-	return out->nd_net;
-#else
-	return &init_net;
-#endif
-}
-
-static inline struct net *nf_post_routing_net(const struct net_device *in,
-					      const struct net_device *out)
-{
-#ifdef CONFIG_NET_NS
-	return out->nd_net;
-#else
-	return &init_net;
-#endif
-}
-
 #endif /*__KERNEL__*/
 #endif /*__LINUX_NETFILTER_H*/
diff --git a/include/linux/netfilter/Kbuild b/include/linux/netfilter/Kbuild
index 3aff513..5a8af87 100644
--- a/include/linux/netfilter/Kbuild
+++ b/include/linux/netfilter/Kbuild
@@ -32,6 +32,7 @@ header-y += xt_owner.h
 header-y += xt_pkttype.h
 header-y += xt_rateest.h
 header-y += xt_realm.h
+header-y += xt_recent.h
 header-y += xt_sctp.h
 header-y += xt_state.h
 header-y += xt_statistic.h
diff --git a/include/linux/netfilter/nf_conntrack_proto_gre.h b/include/linux/netfilter/nf_conntrack_proto_gre.h
index 535e4219..2a10efd 100644
--- a/include/linux/netfilter/nf_conntrack_proto_gre.h
+++ b/include/linux/netfilter/nf_conntrack_proto_gre.h
@@ -87,7 +87,7 @@ int nf_ct_gre_keymap_add(struct nf_conn *ct, enum ip_conntrack_dir dir,
 /* delete keymap entries */
 void nf_ct_gre_keymap_destroy(struct nf_conn *ct);
 
-extern void nf_ct_gre_keymap_flush(void);
+extern void nf_ct_gre_keymap_flush(struct net *net);
 extern void nf_nat_need_gre(void);
 
 #endif /* __KERNEL__ */
diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h
index 2326296..be41b60 100644
--- a/include/linux/netfilter/x_tables.h
+++ b/include/linux/netfilter/x_tables.h
@@ -173,6 +173,98 @@ struct xt_counters_info
 
 #include <linux/netdevice.h>
 
+/**
+ * struct xt_match_param - parameters for match extensions' match functions
+ *
+ * @in:		input netdevice
+ * @out:	output netdevice
+ * @match:	struct xt_match through which this function was invoked
+ * @matchinfo:	per-match data
+ * @fragoff:	packet is a fragment, this is the data offset
+ * @thoff:	position of transport header relative to skb->data
+ * @hotdrop:	drop packet if we had inspection problems
+ * @family:	Actual NFPROTO_* through which the function is invoked
+ * 		(helpful when match->family == NFPROTO_UNSPEC)
+ */
+struct xt_match_param {
+	const struct net_device *in, *out;
+	const struct xt_match *match;
+	const void *matchinfo;
+	int fragoff;
+	unsigned int thoff;
+	bool *hotdrop;
+	u_int8_t family;
+};
+
+/**
+ * struct xt_mtchk_param - parameters for match extensions'
+ * checkentry functions
+ *
+ * @table:	table the rule is tried to be inserted into
+ * @entryinfo:	the family-specific rule data
+ * 		(struct ipt_ip, ip6t_ip, ebt_entry)
+ * @match:	struct xt_match through which this function was invoked
+ * @matchinfo:	per-match data
+ * @hook_mask:	via which hooks the new rule is reachable
+ */
+struct xt_mtchk_param {
+	const char *table;
+	const void *entryinfo;
+	const struct xt_match *match;
+	void *matchinfo;
+	unsigned int hook_mask;
+	u_int8_t family;
+};
+
+/* Match destructor parameters */
+struct xt_mtdtor_param {
+	const struct xt_match *match;
+	void *matchinfo;
+	u_int8_t family;
+};
+
+/**
+ * struct xt_target_param - parameters for target extensions' target functions
+ *
+ * @hooknum:	hook through which this target was invoked
+ * @target:	struct xt_target through which this function was invoked
+ * @targinfo:	per-target data
+ *
+ * Other fields see above.
+ */
+struct xt_target_param {
+	const struct net_device *in, *out;
+	unsigned int hooknum;
+	const struct xt_target *target;
+	const void *targinfo;
+	u_int8_t family;
+};
+
+/**
+ * struct xt_tgchk_param - parameters for target extensions'
+ * checkentry functions
+ *
+ * @entryinfo:	the family-specific rule data
+ * 		(struct ipt_entry, ip6t_entry, arpt_entry, ebt_entry)
+ *
+ * Other fields see above.
+ */
+struct xt_tgchk_param {
+	const char *table;
+	void *entryinfo;
+	const struct xt_target *target;
+	void *targinfo;
+	unsigned int hook_mask;
+	u_int8_t family;
+};
+
+/* Target destructor parameters */
+struct xt_tgdtor_param {
+	const struct xt_target *target;
+	void *targinfo;
+	u_int8_t family;
+};
+
 struct xt_match
 {
 	struct list_head list;
@@ -185,24 +277,13 @@ struct xt_match
 	   non-linear skb, using skb_header_pointer and
 	   skb_ip_make_writable. */
 	bool (*match)(const struct sk_buff *skb,
-		      const struct net_device *in,
-		      const struct net_device *out,
-		      const struct xt_match *match,
-		      const void *matchinfo,
-		      int offset,
-		      unsigned int protoff,
-		      bool *hotdrop);
+		      const struct xt_match_param *);
 
 	/* Called when user tries to insert an entry of this type. */
-	/* Should return true or false. */
-	bool (*checkentry)(const char *tablename,
-			   const void *ip,
-			   const struct xt_match *match,
-			   void *matchinfo,
-			   unsigned int hook_mask);
+	bool (*checkentry)(const struct xt_mtchk_param *);
 
 	/* Called when entry of this type deleted. */
-	void (*destroy)(const struct xt_match *match, void *matchinfo);
+	void (*destroy)(const struct xt_mtdtor_param *);
 
 	/* Called when userspace align differs from kernel space one */
 	void (*compat_from_user)(void *dst, void *src);
@@ -235,24 +316,16 @@ struct xt_target
 	   must now handle non-linear skbs, using skb_copy_bits and
 	   skb_ip_make_writable. */
 	unsigned int (*target)(struct sk_buff *skb,
-			       const struct net_device *in,
-			       const struct net_device *out,
-			       unsigned int hooknum,
-			       const struct xt_target *target,
-			       const void *targinfo);
+			       const struct xt_target_param *);
 
 	/* Called when user tries to insert an entry of this type:
            hook_mask is a bitmask of hooks from which it can be
            called. */
 	/* Should return true or false. */
-	bool (*checkentry)(const char *tablename,
-			   const void *entry,
-			   const struct xt_target *target,
-			   void *targinfo,
-			   unsigned int hook_mask);
+	bool (*checkentry)(const struct xt_tgchk_param *);
 
 	/* Called when entry of this type deleted. */
-	void (*destroy)(const struct xt_target *target, void *targinfo);
+	void (*destroy)(const struct xt_tgdtor_param *);
 
 	/* Called when userspace align differs from kernel space one */
 	void (*compat_from_user)(void *dst, void *src);
@@ -292,7 +365,7 @@ struct xt_table
 	/* Set this to THIS_MODULE if you are a module, otherwise NULL */
 	struct module *me;
 
-	int af;		/* address/protocol family */
+	u_int8_t af;		/* address/protocol family */
 };
 
 #include <linux/netfilter_ipv4.h>
@@ -328,12 +401,10 @@ extern void xt_unregister_match(struct xt_match *target);
 extern int xt_register_matches(struct xt_match *match, unsigned int n);
 extern void xt_unregister_matches(struct xt_match *match, unsigned int n);
 
-extern int xt_check_match(const struct xt_match *match, unsigned short family,
-			  unsigned int size, const char *table, unsigned int hook,
-			  unsigned short proto, int inv_proto);
-extern int xt_check_target(const struct xt_target *target, unsigned short family,
-			   unsigned int size, const char *table, unsigned int hook,
-			   unsigned short proto, int inv_proto);
+extern int xt_check_match(struct xt_mtchk_param *,
+			  unsigned int size, u_int8_t proto, bool inv_proto);
+extern int xt_check_target(struct xt_tgchk_param *,
+			   unsigned int size, u_int8_t proto, bool inv_proto);
 
 extern struct xt_table *xt_register_table(struct net *net,
 					  struct xt_table *table,
@@ -346,19 +417,19 @@ extern struct xt_table_info *xt_replace_table(struct xt_table *table,
 					      struct xt_table_info *newinfo,
 					      int *error);
 
-extern struct xt_match *xt_find_match(int af, const char *name, u8 revision);
-extern struct xt_target *xt_find_target(int af, const char *name, u8 revision);
-extern struct xt_target *xt_request_find_target(int af, const char *name, 
+extern struct xt_match *xt_find_match(u8 af, const char *name, u8 revision);
+extern struct xt_target *xt_find_target(u8 af, const char *name, u8 revision);
+extern struct xt_target *xt_request_find_target(u8 af, const char *name,
 						u8 revision);
-extern int xt_find_revision(int af, const char *name, u8 revision, int target,
-			    int *err);
+extern int xt_find_revision(u8 af, const char *name, u8 revision,
+			    int target, int *err);
 
-extern struct xt_table *xt_find_table_lock(struct net *net, int af,
+extern struct xt_table *xt_find_table_lock(struct net *net, u_int8_t af,
 					   const char *name);
 extern void xt_table_unlock(struct xt_table *t);
 
-extern int xt_proto_init(struct net *net, int af);
-extern void xt_proto_fini(struct net *net, int af);
+extern int xt_proto_init(struct net *net, u_int8_t af);
+extern void xt_proto_fini(struct net *net, u_int8_t af);
 
 extern struct xt_table_info *xt_alloc_table_info(unsigned int size);
 extern void xt_free_table_info(struct xt_table_info *info);
@@ -423,12 +494,12 @@ struct compat_xt_counters_info
 #define COMPAT_XT_ALIGN(s) (((s) + (__alignof__(struct compat_xt_counters)-1)) \
 		& ~(__alignof__(struct compat_xt_counters)-1))
 
-extern void xt_compat_lock(int af);
-extern void xt_compat_unlock(int af);
+extern void xt_compat_lock(u_int8_t af);
+extern void xt_compat_unlock(u_int8_t af);
 
-extern int xt_compat_add_offset(int af, unsigned int offset, short delta);
-extern void xt_compat_flush_offsets(int af);
-extern short xt_compat_calc_jump(int af, unsigned int offset);
+extern int xt_compat_add_offset(u_int8_t af, unsigned int offset, short delta);
+extern void xt_compat_flush_offsets(u_int8_t af);
+extern short xt_compat_calc_jump(u_int8_t af, unsigned int offset);
 
 extern int xt_compat_match_offset(const struct xt_match *match);
 extern int xt_compat_match_from_user(struct xt_entry_match *m,
diff --git a/include/linux/netfilter/xt_TPROXY.h b/include/linux/netfilter/xt_TPROXY.h
new file mode 100644
index 0000000..152e8f9
--- /dev/null
+++ b/include/linux/netfilter/xt_TPROXY.h
@@ -0,0 +1,14 @@
+#ifndef _XT_TPROXY_H_target
+#define _XT_TPROXY_H_target
+
+/* TPROXY target is capable of marking the packet to perform
+ * redirection. We can get rid of that whenever we get support for
+ * mutliple targets in the same rule. */
+struct xt_tproxy_target_info {
+	u_int32_t mark_mask;
+	u_int32_t mark_value;
+	__be32 laddr;
+	__be16 lport;
+};
+
+#endif /* _XT_TPROXY_H_target */
diff --git a/include/linux/netfilter/xt_recent.h b/include/linux/netfilter/xt_recent.h
new file mode 100644
index 0000000..5cfeb81
--- /dev/null
+++ b/include/linux/netfilter/xt_recent.h
@@ -0,0 +1,26 @@
+#ifndef _LINUX_NETFILTER_XT_RECENT_H
+#define _LINUX_NETFILTER_XT_RECENT_H 1
+
+enum {
+	XT_RECENT_CHECK    = 1 << 0,
+	XT_RECENT_SET      = 1 << 1,
+	XT_RECENT_UPDATE   = 1 << 2,
+	XT_RECENT_REMOVE   = 1 << 3,
+	XT_RECENT_TTL      = 1 << 4,
+
+	XT_RECENT_SOURCE   = 0,
+	XT_RECENT_DEST     = 1,
+
+	XT_RECENT_NAME_LEN = 200,
+};
+
+struct xt_recent_mtinfo {
+	u_int32_t seconds;
+	u_int32_t hit_count;
+	u_int8_t check_set;
+	u_int8_t invert;
+	char name[XT_RECENT_NAME_LEN];
+	u_int8_t side;
+};
+
+#endif /* _LINUX_NETFILTER_XT_RECENT_H */
diff --git a/include/linux/netfilter_bridge/ebtables.h b/include/linux/netfilter_bridge/ebtables.h
index 892f5b7..d45e29c 100644
--- a/include/linux/netfilter_bridge/ebtables.h
+++ b/include/linux/netfilter_bridge/ebtables.h
@@ -31,6 +31,9 @@
  * The 4 lsb are more than enough to store the verdict. */
 #define EBT_VERDICT_BITS 0x0000000F
 
+struct xt_match;
+struct xt_target;
+
 struct ebt_counter
 {
 	uint64_t pcnt;
@@ -121,7 +124,7 @@ struct ebt_entry_match
 {
 	union {
 		char name[EBT_FUNCTION_MAXNAMELEN];
-		struct ebt_match *match;
+		struct xt_match *match;
 	} u;
 	/* size of data */
 	unsigned int match_size;
@@ -132,7 +135,7 @@ struct ebt_entry_watcher
 {
 	union {
 		char name[EBT_FUNCTION_MAXNAMELEN];
-		struct ebt_watcher *watcher;
+		struct xt_target *watcher;
 	} u;
 	/* size of data */
 	unsigned int watcher_size;
@@ -143,7 +146,7 @@ struct ebt_entry_target
 {
 	union {
 		char name[EBT_FUNCTION_MAXNAMELEN];
-		struct ebt_target *target;
+		struct xt_target *target;
 	} u;
 	/* size of data */
 	unsigned int target_size;
@@ -207,14 +210,17 @@ struct ebt_match
 {
 	struct list_head list;
 	const char name[EBT_FUNCTION_MAXNAMELEN];
-	/* 0 == it matches */
-	int (*match)(const struct sk_buff *skb, const struct net_device *in,
-	   const struct net_device *out, const void *matchdata,
-	   unsigned int datalen);
-	/* 0 == let it in */
-	int (*check)(const char *tablename, unsigned int hookmask,
-	   const struct ebt_entry *e, void *matchdata, unsigned int datalen);
-	void (*destroy)(void *matchdata, unsigned int datalen);
+	bool (*match)(const struct sk_buff *skb, const struct net_device *in,
+		const struct net_device *out, const struct xt_match *match,
+		const void *matchinfo, int offset, unsigned int protoff,
+		bool *hotdrop);
+	bool (*checkentry)(const char *table, const void *entry,
+		const struct xt_match *match, void *matchinfo,
+		unsigned int hook_mask);
+	void (*destroy)(const struct xt_match *match, void *matchinfo);
+	unsigned int matchsize;
+	u_int8_t revision;
+	u_int8_t family;
 	struct module *me;
 };
 
@@ -222,13 +228,17 @@ struct ebt_watcher
 {
 	struct list_head list;
 	const char name[EBT_FUNCTION_MAXNAMELEN];
-	void (*watcher)(const struct sk_buff *skb, unsigned int hooknr,
-	   const struct net_device *in, const struct net_device *out,
-	   const void *watcherdata, unsigned int datalen);
-	/* 0 == let it in */
-	int (*check)(const char *tablename, unsigned int hookmask,
-	   const struct ebt_entry *e, void *watcherdata, unsigned int datalen);
-	void (*destroy)(void *watcherdata, unsigned int datalen);
+	unsigned int (*target)(struct sk_buff *skb,
+		const struct net_device *in, const struct net_device *out,
+		unsigned int hook_num, const struct xt_target *target,
+		const void *targinfo);
+	bool (*checkentry)(const char *table, const void *entry,
+		const struct xt_target *target, void *targinfo,
+		unsigned int hook_mask);
+	void (*destroy)(const struct xt_target *target, void *targinfo);
+	unsigned int targetsize;
+	u_int8_t revision;
+	u_int8_t family;
 	struct module *me;
 };
 
@@ -236,14 +246,18 @@ struct ebt_target
 {
 	struct list_head list;
 	const char name[EBT_FUNCTION_MAXNAMELEN];
-	/* returns one of the standard verdicts */
-	int (*target)(struct sk_buff *skb, unsigned int hooknr,
-	   const struct net_device *in, const struct net_device *out,
-	   const void *targetdata, unsigned int datalen);
-	/* 0 == let it in */
-	int (*check)(const char *tablename, unsigned int hookmask,
-	   const struct ebt_entry *e, void *targetdata, unsigned int datalen);
-	void (*destroy)(void *targetdata, unsigned int datalen);
+	/* returns one of the standard EBT_* verdicts */
+	unsigned int (*target)(struct sk_buff *skb,
+		const struct net_device *in, const struct net_device *out,
+		unsigned int hook_num, const struct xt_target *target,
+		const void *targinfo);
+	bool (*checkentry)(const char *table, const void *entry,
+		const struct xt_target *target, void *targinfo,
+		unsigned int hook_mask);
+	void (*destroy)(const struct xt_target *target, void *targinfo);
+	unsigned int targetsize;
+	u_int8_t revision;
+	u_int8_t family;
 	struct module *me;
 };
 
@@ -288,12 +302,6 @@ struct ebt_table
 		     ~(__alignof__(struct ebt_replace)-1))
 extern int ebt_register_table(struct ebt_table *table);
 extern void ebt_unregister_table(struct ebt_table *table);
-extern int ebt_register_match(struct ebt_match *match);
-extern void ebt_unregister_match(struct ebt_match *match);
-extern int ebt_register_watcher(struct ebt_watcher *watcher);
-extern void ebt_unregister_watcher(struct ebt_watcher *watcher);
-extern int ebt_register_target(struct ebt_target *target);
-extern void ebt_unregister_target(struct ebt_target *target);
 extern unsigned int ebt_do_table(unsigned int hook, struct sk_buff *skb,
    const struct net_device *in, const struct net_device *out,
    struct ebt_table *table);
@@ -302,9 +310,9 @@ extern unsigned int ebt_do_table(unsigned int hook, struct sk_buff *skb,
 #define FWINV(bool,invflg) ((bool) ^ !!(info->invflags & invflg))
 /* True if the hook mask denotes that the rule is in a base chain,
  * used in the check() functions */
-#define BASE_CHAIN (hookmask & (1 << NF_BR_NUMHOOKS))
+#define BASE_CHAIN (par->hook_mask & (1 << NF_BR_NUMHOOKS))
 /* Clear the bit in the hook mask that tells if the rule is on a base chain */
-#define CLEAR_BASE_CHAIN_BIT (hookmask &= ~(1 << NF_BR_NUMHOOKS))
+#define CLEAR_BASE_CHAIN_BIT (par->hook_mask &= ~(1 << NF_BR_NUMHOOKS))
 /* True if the target is not a standard target */
 #define INVALID_TARGET (info->target < -NUM_STANDARD_TARGETS || info->target >= 0)
 
diff --git a/include/linux/netfilter_ipv4/ipt_recent.h b/include/linux/netfilter_ipv4/ipt_recent.h
index 6508a45..d636cca 100644
--- a/include/linux/netfilter_ipv4/ipt_recent.h
+++ b/include/linux/netfilter_ipv4/ipt_recent.h
@@ -1,27 +1,21 @@
 #ifndef _IPT_RECENT_H
 #define _IPT_RECENT_H
 
-#define RECENT_NAME	"ipt_recent"
-#define RECENT_VER	"v0.3.1"
+#include <linux/netfilter/xt_recent.h>
 
-#define IPT_RECENT_CHECK  1
-#define IPT_RECENT_SET    2
-#define IPT_RECENT_UPDATE 4
-#define IPT_RECENT_REMOVE 8
-#define IPT_RECENT_TTL   16
+#define ipt_recent_info xt_recent_mtinfo
 
-#define IPT_RECENT_SOURCE 0
-#define IPT_RECENT_DEST   1
+enum {
+	IPT_RECENT_CHECK    = XT_RECENT_CHECK,
+	IPT_RECENT_SET      = XT_RECENT_SET,
+	IPT_RECENT_UPDATE   = XT_RECENT_UPDATE,
+	IPT_RECENT_REMOVE   = XT_RECENT_REMOVE,
+	IPT_RECENT_TTL      = XT_RECENT_TTL,
 
-#define IPT_RECENT_NAME_LEN 200
+	IPT_RECENT_SOURCE   = XT_RECENT_SOURCE,
+	IPT_RECENT_DEST     = XT_RECENT_DEST,
 
-struct ipt_recent_info {
-	u_int32_t   seconds;
-	u_int32_t   hit_count;
-	u_int8_t    check_set;
-	u_int8_t    invert;
-	char        name[IPT_RECENT_NAME_LEN];
-	u_int8_t    side;
+	IPT_RECENT_NAME_LEN = XT_RECENT_NAME_LEN,
 };
 
 #endif /*_IPT_RECENT_H*/
diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index a8eb43c..708009b 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -16,6 +16,9 @@
 #include <net/netns/ipv6.h>
 #include <net/netns/dccp.h>
 #include <net/netns/x_tables.h>
+#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
+#include <net/netns/conntrack.h>
+#endif
 
 struct proc_dir_entry;
 struct net_device;
@@ -67,6 +70,9 @@ struct net {
 #endif
 #ifdef CONFIG_NETFILTER
 	struct netns_xt		xt;
+#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
+	struct netns_ct		ct;
+#endif
 #endif
 	struct net_generic	*gen;
 };
diff --git a/include/net/netfilter/ipv4/nf_defrag_ipv4.h b/include/net/netfilter/ipv4/nf_defrag_ipv4.h
new file mode 100644
index 0000000..6b00ea3
--- /dev/null
+++ b/include/net/netfilter/ipv4/nf_defrag_ipv4.h
@@ -0,0 +1,6 @@
+#ifndef _NF_DEFRAG_IPV4_H
+#define _NF_DEFRAG_IPV4_H
+
+extern void nf_defrag_ipv4_enable(void);
+
+#endif /* _NF_DEFRAG_IPV4_H */
diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h
index 0741ad5..b76a868 100644
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -123,7 +123,9 @@ struct nf_conn
 
 	/* Extensions */
 	struct nf_ct_ext *ext;
-
+#ifdef CONFIG_NET_NS
+	struct net *ct_net;
+#endif
 	struct rcu_head rcu;
 };
 
@@ -147,6 +149,17 @@ static inline u_int8_t nf_ct_protonum(const struct nf_conn *ct)
 /* get master conntrack via master expectation */
 #define master_ct(conntr) (conntr->master)
 
+extern struct net init_net;
+
+static inline struct net *nf_ct_net(const struct nf_conn *ct)
+{
+#ifdef CONFIG_NET_NS
+	return ct->ct_net;
+#else
+	return &init_net;
+#endif
+}
+
 /* Alter reply tuple (maybe alter helper). */
 extern void
 nf_conntrack_alter_reply(struct nf_conn *ct,
@@ -182,11 +195,11 @@ extern void nf_ct_free_hashtable(struct hlist_head *hash, int vmalloced,
 				 unsigned int size);
 
 extern struct nf_conntrack_tuple_hash *
-__nf_conntrack_find(const struct nf_conntrack_tuple *tuple);
+__nf_conntrack_find(struct net *net, const struct nf_conntrack_tuple *tuple);
 
 extern void nf_conntrack_hash_insert(struct nf_conn *ct);
 
-extern void nf_conntrack_flush(void);
+extern void nf_conntrack_flush(struct net *net);
 
 extern bool nf_ct_get_tuplepr(const struct sk_buff *skb,
 			      unsigned int nhoff, u_int16_t l3num,
@@ -248,10 +261,11 @@ extern struct nf_conn nf_conntrack_untracked;
 
 /* Iterate over all conntracks: if iter returns true, it's deleted. */
 extern void
-nf_ct_iterate_cleanup(int (*iter)(struct nf_conn *i, void *data), void *data);
+nf_ct_iterate_cleanup(struct net *net, int (*iter)(struct nf_conn *i, void *data), void *data);
 extern void nf_conntrack_free(struct nf_conn *ct);
 extern struct nf_conn *
-nf_conntrack_alloc(const struct nf_conntrack_tuple *orig,
+nf_conntrack_alloc(struct net *net,
+		   const struct nf_conntrack_tuple *orig,
 		   const struct nf_conntrack_tuple *repl,
 		   gfp_t gfp);
 
@@ -273,16 +287,14 @@ static inline int nf_ct_is_untracked(const struct sk_buff *skb)
 
 extern int nf_conntrack_set_hashsize(const char *val, struct kernel_param *kp);
 extern unsigned int nf_conntrack_htable_size;
-extern int nf_conntrack_checksum;
-extern atomic_t nf_conntrack_count;
 extern int nf_conntrack_max;
 
-DECLARE_PER_CPU(struct ip_conntrack_stat, nf_conntrack_stat);
-#define NF_CT_STAT_INC(count) (__get_cpu_var(nf_conntrack_stat).count++)
-#define NF_CT_STAT_INC_ATOMIC(count)			\
+#define NF_CT_STAT_INC(net, count)	\
+	(per_cpu_ptr((net)->ct.stat, raw_smp_processor_id())->count++)
+#define NF_CT_STAT_INC_ATOMIC(net, count)		\
 do {							\
 	local_bh_disable();				\
-	__get_cpu_var(nf_conntrack_stat).count++;	\
+	per_cpu_ptr((net)->ct.stat, raw_smp_processor_id())->count++;	\
 	local_bh_enable();				\
 } while (0)
 
diff --git a/include/net/netfilter/nf_conntrack_acct.h b/include/net/netfilter/nf_conntrack_acct.h
index 5d5ae55..03e218f 100644
--- a/include/net/netfilter/nf_conntrack_acct.h
+++ b/include/net/netfilter/nf_conntrack_acct.h
@@ -8,6 +8,7 @@
 
 #ifndef _NF_CONNTRACK_ACCT_H
 #define _NF_CONNTRACK_ACCT_H
+#include <net/net_namespace.h>
 #include <linux/netfilter/nf_conntrack_common.h>
 #include <linux/netfilter/nf_conntrack_tuple_common.h>
 #include <net/netfilter/nf_conntrack.h>
@@ -18,8 +19,6 @@ struct nf_conn_counter {
 	u_int64_t bytes;
 };
 
-extern int nf_ct_acct;
-
 static inline
 struct nf_conn_counter *nf_conn_acct_find(const struct nf_conn *ct)
 {
@@ -29,9 +28,10 @@ struct nf_conn_counter *nf_conn_acct_find(const struct nf_conn *ct)
 static inline
 struct nf_conn_counter *nf_ct_acct_ext_add(struct nf_conn *ct, gfp_t gfp)
 {
+	struct net *net = nf_ct_net(ct);
 	struct nf_conn_counter *acct;
 
-	if (!nf_ct_acct)
+	if (!net->ct.sysctl_acct)
 		return NULL;
 
 	acct = nf_ct_ext_add(ct, NF_CT_EXT_ACCT, gfp);
@@ -45,7 +45,7 @@ struct nf_conn_counter *nf_ct_acct_ext_add(struct nf_conn *ct, gfp_t gfp)
 extern unsigned int
 seq_print_acct(struct seq_file *s, const struct nf_conn *ct, int dir);
 
-extern int nf_conntrack_acct_init(void);
-extern void nf_conntrack_acct_fini(void);
+extern int nf_conntrack_acct_init(struct net *net);
+extern void nf_conntrack_acct_fini(struct net *net);
 
 #endif /* _NF_CONNTRACK_ACCT_H */
diff --git a/include/net/netfilter/nf_conntrack_core.h b/include/net/netfilter/nf_conntrack_core.h
index a817712..e78afe7 100644
--- a/include/net/netfilter/nf_conntrack_core.h
+++ b/include/net/netfilter/nf_conntrack_core.h
@@ -20,12 +20,13 @@
 /* This header is used to share core functionality between the
    standalone connection tracking module, and the compatibility layer's use
    of connection tracking. */
-extern unsigned int nf_conntrack_in(int pf,
+extern unsigned int nf_conntrack_in(struct net *net,
+				    u_int8_t pf,
 				    unsigned int hooknum,
 				    struct sk_buff *skb);
 
-extern int nf_conntrack_init(void);
-extern void nf_conntrack_cleanup(void);
+extern int nf_conntrack_init(struct net *net);
+extern void nf_conntrack_cleanup(struct net *net);
 
 extern int nf_conntrack_proto_init(void);
 extern void nf_conntrack_proto_fini(void);
@@ -48,7 +49,7 @@ nf_ct_invert_tuple(struct nf_conntrack_tuple *inverse,
 
 /* Find a connection corresponding to a tuple. */
 extern struct nf_conntrack_tuple_hash *
-nf_conntrack_find_get(const struct nf_conntrack_tuple *tuple);
+nf_conntrack_find_get(struct net *net, const struct nf_conntrack_tuple *tuple);
 
 extern int __nf_conntrack_confirm(struct sk_buff *skb);
 
@@ -71,8 +72,6 @@ print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple,
             const struct nf_conntrack_l3proto *l3proto,
             const struct nf_conntrack_l4proto *proto);
 
-extern struct hlist_head *nf_conntrack_hash;
 extern spinlock_t nf_conntrack_lock ;
-extern struct hlist_head unconfirmed;
 
 #endif /* _NF_CONNTRACK_CORE_H */
diff --git a/include/net/netfilter/nf_conntrack_ecache.h b/include/net/netfilter/nf_conntrack_ecache.h
index f0b9078..35f814c 100644
--- a/include/net/netfilter/nf_conntrack_ecache.h
+++ b/include/net/netfilter/nf_conntrack_ecache.h
@@ -8,6 +8,7 @@
 
 #include <linux/notifier.h>
 #include <linux/interrupt.h>
+#include <net/net_namespace.h>
 #include <net/netfilter/nf_conntrack_expect.h>
 
 #ifdef CONFIG_NF_CONNTRACK_EVENTS
@@ -15,9 +16,6 @@ struct nf_conntrack_ecache {
 	struct nf_conn *ct;
 	unsigned int events;
 };
-DECLARE_PER_CPU(struct nf_conntrack_ecache, nf_conntrack_ecache);
-
-#define CONNTRACK_ECACHE(x)	(__get_cpu_var(nf_conntrack_ecache).x)
 
 extern struct atomic_notifier_head nf_conntrack_chain;
 extern int nf_conntrack_register_notifier(struct notifier_block *nb);
@@ -25,17 +23,16 @@ extern int nf_conntrack_unregister_notifier(struct notifier_block *nb);
 
 extern void nf_ct_deliver_cached_events(const struct nf_conn *ct);
 extern void __nf_ct_event_cache_init(struct nf_conn *ct);
-extern void nf_ct_event_cache_flush(void);
+extern void nf_ct_event_cache_flush(struct net *net);
 
 static inline void
-nf_conntrack_event_cache(enum ip_conntrack_events event,
-			 const struct sk_buff *skb)
+nf_conntrack_event_cache(enum ip_conntrack_events event, struct nf_conn *ct)
 {
-	struct nf_conn *ct = (struct nf_conn *)skb->nfct;
+	struct net *net = nf_ct_net(ct);
 	struct nf_conntrack_ecache *ecache;
 
 	local_bh_disable();
-	ecache = &__get_cpu_var(nf_conntrack_ecache);
+	ecache = per_cpu_ptr(net->ct.ecache, raw_smp_processor_id());
 	if (ct != ecache->ct)
 		__nf_ct_event_cache_init(ct);
 	ecache->events |= event;
@@ -60,6 +57,9 @@ nf_ct_expect_event(enum ip_conntrack_expect_events event,
 	atomic_notifier_call_chain(&nf_ct_expect_chain, event, exp);
 }
 
+extern int nf_conntrack_ecache_init(struct net *net);
+extern void nf_conntrack_ecache_fini(struct net *net);
+
 #else /* CONFIG_NF_CONNTRACK_EVENTS */
 
 static inline void nf_conntrack_event_cache(enum ip_conntrack_events event,
@@ -69,7 +69,15 @@ static inline void nf_conntrack_event(enum ip_conntrack_events event,
 static inline void nf_ct_deliver_cached_events(const struct nf_conn *ct) {}
 static inline void nf_ct_expect_event(enum ip_conntrack_expect_events event,
 				      struct nf_conntrack_expect *exp) {}
-static inline void nf_ct_event_cache_flush(void) {}
+static inline void nf_ct_event_cache_flush(struct net *net) {}
+
+static inline int nf_conntrack_ecache_init(struct net *net)
+{
+	return 0;
+
+static inline void nf_conntrack_ecache_fini(struct net *net)
+{
+}
 #endif /* CONFIG_NF_CONNTRACK_EVENTS */
 
 #endif /*_NF_CONNTRACK_ECACHE_H*/
diff --git a/include/net/netfilter/nf_conntrack_expect.h b/include/net/netfilter/nf_conntrack_expect.h
index dfdf4b4..37a7fc1 100644
--- a/include/net/netfilter/nf_conntrack_expect.h
+++ b/include/net/netfilter/nf_conntrack_expect.h
@@ -6,7 +6,6 @@
 #define _NF_CONNTRACK_EXPECT_H
 #include <net/netfilter/nf_conntrack.h>
 
-extern struct hlist_head *nf_ct_expect_hash;
 extern unsigned int nf_ct_expect_hsize;
 extern unsigned int nf_ct_expect_max;
 
@@ -56,6 +55,15 @@ struct nf_conntrack_expect
 	struct rcu_head rcu;
 };
 
+static inline struct net *nf_ct_exp_net(struct nf_conntrack_expect *exp)
+{
+#ifdef CONFIG_NET_NS
+	return exp->master->ct_net;	/* by definition */
+#else
+	return &init_net;
+#endif
+}
+
 struct nf_conntrack_expect_policy
 {
 	unsigned int	max_expected;
@@ -67,17 +75,17 @@ struct nf_conntrack_expect_policy
 #define NF_CT_EXPECT_PERMANENT	0x1
 #define NF_CT_EXPECT_INACTIVE	0x2
 
-int nf_conntrack_expect_init(void);
-void nf_conntrack_expect_fini(void);
+int nf_conntrack_expect_init(struct net *net);
+void nf_conntrack_expect_fini(struct net *net);
 
 struct nf_conntrack_expect *
-__nf_ct_expect_find(const struct nf_conntrack_tuple *tuple);
+__nf_ct_expect_find(struct net *net, const struct nf_conntrack_tuple *tuple);
 
 struct nf_conntrack_expect *
-nf_ct_expect_find_get(const struct nf_conntrack_tuple *tuple);
+nf_ct_expect_find_get(struct net *net, const struct nf_conntrack_tuple *tuple);
 
 struct nf_conntrack_expect *
-nf_ct_find_expectation(const struct nf_conntrack_tuple *tuple);
+nf_ct_find_expectation(struct net *net, const struct nf_conntrack_tuple *tuple);
 
 void nf_ct_unlink_expect(struct nf_conntrack_expect *exp);
 void nf_ct_remove_expectations(struct nf_conn *ct);
@@ -86,7 +94,7 @@ void nf_ct_unexpect_related(struct nf_conntrack_expect *exp);
 /* Allocate space for an expectation: this is mandatory before calling
    nf_ct_expect_related.  You will have to call put afterwards. */
 struct nf_conntrack_expect *nf_ct_expect_alloc(struct nf_conn *me);
-void nf_ct_expect_init(struct nf_conntrack_expect *, unsigned int, int,
+void nf_ct_expect_init(struct nf_conntrack_expect *, unsigned int, u_int8_t,
 		       const union nf_inet_addr *,
 		       const union nf_inet_addr *,
 		       u_int8_t, const __be16 *, const __be16 *);
diff --git a/include/net/netfilter/nf_conntrack_l4proto.h b/include/net/netfilter/nf_conntrack_l4proto.h
index 723df9d..7f2f43c 100644
--- a/include/net/netfilter/nf_conntrack_l4proto.h
+++ b/include/net/netfilter/nf_conntrack_l4proto.h
@@ -39,7 +39,7 @@ struct nf_conntrack_l4proto
 		      const struct sk_buff *skb,
 		      unsigned int dataoff,
 		      enum ip_conntrack_info ctinfo,
-		      int pf,
+		      u_int8_t pf,
 		      unsigned int hooknum);
 
 	/* Called when a new connection for this protocol found;
@@ -50,9 +50,9 @@ struct nf_conntrack_l4proto
 	/* Called when a conntrack entry is destroyed */
 	void (*destroy)(struct nf_conn *ct);
 
-	int (*error)(struct sk_buff *skb, unsigned int dataoff,
+	int (*error)(struct net *net, struct sk_buff *skb, unsigned int dataoff,
 		     enum ip_conntrack_info *ctinfo,
-		     int pf, unsigned int hooknum);
+		     u_int8_t pf, unsigned int hooknum);
 
 	/* Print out the per-protocol part of the tuple. Return like seq_* */
 	int (*print_tuple)(struct seq_file *s,
@@ -117,20 +117,19 @@ extern int nf_ct_port_nlattr_to_tuple(struct nlattr *tb[],
 				      struct nf_conntrack_tuple *t);
 extern const struct nla_policy nf_ct_port_nla_policy[];
 
-/* Log invalid packets */
-extern unsigned int nf_ct_log_invalid;
-
 #ifdef CONFIG_SYSCTL
 #ifdef DEBUG_INVALID_PACKETS
-#define LOG_INVALID(proto) \
-	(nf_ct_log_invalid == (proto) || nf_ct_log_invalid == IPPROTO_RAW)
+#define LOG_INVALID(net, proto)				\
+	((net)->ct.sysctl_log_invalid == (proto) ||	\
+	 (net)->ct.sysctl_log_invalid == IPPROTO_RAW)
 #else
-#define LOG_INVALID(proto) \
-	((nf_ct_log_invalid == (proto) || nf_ct_log_invalid == IPPROTO_RAW) \
+#define LOG_INVALID(net, proto)				\
+	(((net)->ct.sysctl_log_invalid == (proto) ||	\
+	  (net)->ct.sysctl_log_invalid == IPPROTO_RAW)	\
 	 && net_ratelimit())
 #endif
 #else
-#define LOG_INVALID(proto) 0
+#define LOG_INVALID(net, proto) 0
 #endif /* CONFIG_SYSCTL */
 
 #endif /*_NF_CONNTRACK_PROTOCOL_H*/
diff --git a/include/net/netfilter/nf_log.h b/include/net/netfilter/nf_log.h
index 8c6b5ae..7182c06 100644
--- a/include/net/netfilter/nf_log.h
+++ b/include/net/netfilter/nf_log.h
@@ -28,7 +28,7 @@ struct nf_loginfo {
 	} u;
 };
 
-typedef void nf_logfn(unsigned int pf,
+typedef void nf_logfn(u_int8_t pf,
 		      unsigned int hooknum,
 		      const struct sk_buff *skb,
 		      const struct net_device *in,
@@ -43,12 +43,12 @@ struct nf_logger {
 };
 
 /* Function to register/unregister log function. */
-int nf_log_register(int pf, const struct nf_logger *logger);
+int nf_log_register(u_int8_t pf, const struct nf_logger *logger);
 void nf_log_unregister(const struct nf_logger *logger);
-void nf_log_unregister_pf(int pf);
+void nf_log_unregister_pf(u_int8_t pf);
 
 /* Calls the registered backend logging function */
-void nf_log_packet(int pf,
+void nf_log_packet(u_int8_t pf,
 		   unsigned int hooknum,
 		   const struct sk_buff *skb,
 		   const struct net_device *in,
diff --git a/include/net/netfilter/nf_queue.h b/include/net/netfilter/nf_queue.h
index d030044..252fd10 100644
--- a/include/net/netfilter/nf_queue.h
+++ b/include/net/netfilter/nf_queue.h
@@ -8,7 +8,7 @@ struct nf_queue_entry {
 	unsigned int		id;
 
 	struct nf_hook_ops	*elem;
-	int			pf;
+	u_int8_t		pf;
 	unsigned int		hook;
 	struct net_device	*indev;
 	struct net_device	*outdev;
@@ -24,9 +24,9 @@ struct nf_queue_handler {
 	char			*name;
 };
 
-extern int nf_register_queue_handler(int pf,
+extern int nf_register_queue_handler(u_int8_t pf,
 				     const struct nf_queue_handler *qh);
-extern int nf_unregister_queue_handler(int pf,
+extern int nf_unregister_queue_handler(u_int8_t pf,
 				       const struct nf_queue_handler *qh);
 extern void nf_unregister_queue_handlers(const struct nf_queue_handler *qh);
 extern void nf_reinject(struct nf_queue_entry *entry, unsigned int verdict);
diff --git a/include/net/netfilter/nf_tproxy_core.h b/include/net/netfilter/nf_tproxy_core.h
new file mode 100644
index 0000000..208b46f
--- /dev/null
+++ b/include/net/netfilter/nf_tproxy_core.h
@@ -0,0 +1,32 @@
+#ifndef _NF_TPROXY_CORE_H
+#define _NF_TPROXY_CORE_H
+
+#include <linux/types.h>
+#include <linux/in.h>
+#include <linux/skbuff.h>
+#include <net/sock.h>
+#include <net/inet_sock.h>
+#include <net/tcp.h>
+
+/* look up and get a reference to a matching socket */
+extern struct sock *
+nf_tproxy_get_sock_v4(struct net *net, const u8 protocol,
+		      const __be32 saddr, const __be32 daddr,
+		      const __be16 sport, const __be16 dport,
+		      const struct net_device *in, bool listening);
+
+static inline void
+nf_tproxy_put_sock(struct sock *sk)
+{
+	/* TIME_WAIT inet sockets have to be handled differently */
+	if ((sk->sk_protocol == IPPROTO_TCP) && (sk->sk_state == TCP_TIME_WAIT))
+		inet_twsk_put(inet_twsk(sk));
+	else
+		sock_put(sk);
+}
+
+/* assign a socket to the skb -- consumes sk */
+int
+nf_tproxy_assign_sock(struct sk_buff *skb, struct sock *sk);
+
+#endif
diff --git a/include/net/netns/conntrack.h b/include/net/netns/conntrack.h
new file mode 100644
index 0000000..f4498a6
--- /dev/null
+++ b/include/net/netns/conntrack.h
@@ -0,0 +1,30 @@
+#ifndef __NETNS_CONNTRACK_H
+#define __NETNS_CONNTRACK_H
+
+#include <linux/list.h>
+#include <asm/atomic.h>
+
+struct ctl_table_header;
+struct nf_conntrack_ecache;
+
+struct netns_ct {
+	atomic_t		count;
+	unsigned int		expect_count;
+	struct hlist_head	*hash;
+	struct hlist_head	*expect_hash;
+	struct hlist_head	unconfirmed;
+	struct ip_conntrack_stat *stat;
+#ifdef CONFIG_NF_CONNTRACK_EVENTS
+	struct nf_conntrack_ecache *ecache;
+#endif
+	int			sysctl_acct;
+	int			sysctl_checksum;
+	unsigned int		sysctl_log_invalid; /* Log invalid packets */
+#ifdef CONFIG_SYSCTL
+	struct ctl_table_header	*sysctl_header;
+	struct ctl_table_header	*acct_sysctl_header;
+#endif
+	int			hash_vmalloc;
+	int			expect_vmalloc;
+};
+#endif
diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
index a6ed838..ece1c92 100644
--- a/include/net/netns/ipv4.h
+++ b/include/net/netns/ipv4.h
@@ -38,6 +38,9 @@ struct netns_ipv4 {
 	struct xt_table		*iptable_raw;
 	struct xt_table		*arptable_filter;
 	struct xt_table		*iptable_security;
+	struct xt_table		*nat_table;
+	struct hlist_head	*nat_bysource;
+	int			nat_vmalloced;
 #endif
 
 	int sysctl_icmp_echo_ignore_all;