Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next

Pablo Neira Ayuso says:

====================
Netfilter/IPVS updates for net-next

The following patchset contains Netfilter updates for net-next:

1) Remove the broute pseudo hook, implement this from the bridge
   prerouting hook instead. Now broute becomes real table in ebtables,
   from Florian Westphal. This also includes a size reduction patch for the
   bridge control buffer area via squashing boolean into bitfields and
   a selftest.

2) Add OS passive fingerprint version matching, from Fernando Fernandez.

3) Support for gue encapsulation for IPVS, from Jacky Hu.

4) Add support for NAT to the inet family, from Florian Westphal.
   This includes support for masquerade, redirect and nat extensions.

5) Skip interface lookup in flowtable, use device in the dst object.

6) Add jiffies64_to_msecs() and use it, from Li RongQing.

7) Remove unused parameter in nf_tables_set_desc_parse(), from Colin Ian King.

8) Statify several functions, patches from YueHaibing and Florian Westphal.

9) Add an optimized version of nf_inet_addr_cmp(), from Li RongQing.

10) Merge route extension to core, also from Florian.

11) Use IS_ENABLED(CONFIG_NF_NAT) instead of NF_NAT_NEEDED, from Florian.

12) Merge ip/ip6 masquerade extensions, from Florian. This includes
    netdevice notifier unification.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

37 files changed, 852 insertions, 562 deletions

diff --git a/net/bridge/br_arp_nd_proxy.c b/net/bridge/br_arp_nd_proxy.c
index 724b474ade54..15116752365a 100644
--- a/net/bridge/br_arp_nd_proxy.c
+++ b/net/bridge/br_arp_nd_proxy.c
@@ -131,7 +131,7 @@ void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br,
 	u8 *arpptr, *sha;
 	__be32 sip, tip;
 
-	BR_INPUT_SKB_CB(skb)->proxyarp_replied = false;
+	BR_INPUT_SKB_CB(skb)->proxyarp_replied = 0;
 
 	if ((dev->flags & IFF_NOARP) ||
 	    !pskb_may_pull(skb, arp_hdr_len(dev)))
@@ -161,7 +161,7 @@ void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br,
 			return;
 		if (ipv4_is_zeronet(sip) || sip == tip) {
 			/* prevent flooding to neigh suppress ports */
-			BR_INPUT_SKB_CB(skb)->proxyarp_replied = true;
+			BR_INPUT_SKB_CB(skb)->proxyarp_replied = 1;
 			return;
 		}
 	}
@@ -181,7 +181,7 @@ void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br,
 		/* its our local ip, so don't proxy reply
 		 * and don't forward to neigh suppress ports
 		 */
-		BR_INPUT_SKB_CB(skb)->proxyarp_replied = true;
+		BR_INPUT_SKB_CB(skb)->proxyarp_replied = 1;
 		return;
 	}
 
@@ -217,7 +217,7 @@ void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br,
 			 */
 			if (replied ||
 			    br_opt_get(br, BROPT_NEIGH_SUPPRESS_ENABLED))
-				BR_INPUT_SKB_CB(skb)->proxyarp_replied = true;
+				BR_INPUT_SKB_CB(skb)->proxyarp_replied = 1;
 		}
 
 		neigh_release(n);
@@ -393,7 +393,7 @@ void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br,
 	struct ipv6hdr *iphdr;
 	struct neighbour *n;
 
-	BR_INPUT_SKB_CB(skb)->proxyarp_replied = false;
+	BR_INPUT_SKB_CB(skb)->proxyarp_replied = 0;
 
 	if (p && (p->flags & BR_NEIGH_SUPPRESS))
 		return;
@@ -401,7 +401,7 @@ void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br,
 	if (msg->icmph.icmp6_type == NDISC_NEIGHBOUR_ADVERTISEMENT &&
 	    !msg->icmph.icmp6_solicited) {
 		/* prevent flooding to neigh suppress ports */
-		BR_INPUT_SKB_CB(skb)->proxyarp_replied = true;
+		BR_INPUT_SKB_CB(skb)->proxyarp_replied = 1;
 		return;
 	}
 
@@ -414,7 +414,7 @@ void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br,
 
 	if (ipv6_addr_any(saddr) || !ipv6_addr_cmp(saddr, daddr)) {
 		/* prevent flooding to neigh suppress ports */
-		BR_INPUT_SKB_CB(skb)->proxyarp_replied = true;
+		BR_INPUT_SKB_CB(skb)->proxyarp_replied = 1;
 		return;
 	}
 
@@ -432,7 +432,7 @@ void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br,
 		/* its our own ip, so don't proxy reply
 		 * and don't forward to arp suppress ports
 		 */
-		BR_INPUT_SKB_CB(skb)->proxyarp_replied = true;
+		BR_INPUT_SKB_CB(skb)->proxyarp_replied = 1;
 		return;
 	}
 
@@ -465,7 +465,7 @@ void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br,
 			 */
 			if (replied ||
 			    br_opt_get(br, BROPT_NEIGH_SUPPRESS_ENABLED))
-				BR_INPUT_SKB_CB(skb)->proxyarp_replied = true;
+				BR_INPUT_SKB_CB(skb)->proxyarp_replied = 1;
 		}
 		neigh_release(n);
 	}
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index 5ea7e56119c1..86dc46f6a68f 100644
--- a/net/bridge/br_input.c
+++ b/net/bridge/br_input.c
@@ -16,6 +16,9 @@
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/netfilter_bridge.h>
+#ifdef CONFIG_NETFILTER_FAMILY_BRIDGE
+#include <net/netfilter/nf_queue.h>
+#endif
 #include <linux/neighbour.h>
 #include <net/arp.h>
 #include <linux/export.h>
@@ -23,10 +26,6 @@
 #include "br_private.h"
 #include "br_private_tunnel.h"
 
-/* Hook for brouter */
-br_should_route_hook_t __rcu *br_should_route_hook __read_mostly;
-EXPORT_SYMBOL(br_should_route_hook);
-
 static int
 br_netif_receive_skb(struct net *net, struct sock *sk, struct sk_buff *skb)
 {
@@ -206,6 +205,59 @@ static int br_handle_local_finish(struct net *net, struct sock *sk, struct sk_bu
 	return 0;
 }
 
+static int nf_hook_bridge_pre(struct sk_buff *skb, struct sk_buff **pskb)
+{
+#ifdef CONFIG_NETFILTER_FAMILY_BRIDGE
+	struct nf_hook_entries *e = NULL;
+	struct nf_hook_state state;
+	unsigned int verdict, i;
+	struct net *net;
+	int ret;
+
+	net = dev_net(skb->dev);
+#ifdef HAVE_JUMP_LABEL
+	if (!static_key_false(&nf_hooks_needed[NFPROTO_BRIDGE][NF_BR_PRE_ROUTING]))
+		goto frame_finish;
+#endif
+
+	e = rcu_dereference(net->nf.hooks_bridge[NF_BR_PRE_ROUTING]);
+	if (!e)
+		goto frame_finish;
+
+	nf_hook_state_init(&state, NF_BR_PRE_ROUTING,
+			   NFPROTO_BRIDGE, skb->dev, NULL, NULL,
+			   net, br_handle_frame_finish);
+
+	for (i = 0; i < e->num_hook_entries; i++) {
+		verdict = nf_hook_entry_hookfn(&e->hooks[i], skb, &state);
+		switch (verdict & NF_VERDICT_MASK) {
+		case NF_ACCEPT:
+			if (BR_INPUT_SKB_CB(skb)->br_netfilter_broute) {
+				*pskb = skb;
+				return RX_HANDLER_PASS;
+			}
+			break;
+		case NF_DROP:
+			kfree_skb(skb);
+			return RX_HANDLER_CONSUMED;
+		case NF_QUEUE:
+			ret = nf_queue(skb, &state, e, i, verdict);
+			if (ret == 1)
+				continue;
+			return RX_HANDLER_CONSUMED;
+		default: /* STOLEN */
+			return RX_HANDLER_CONSUMED;
+		}
+	}
+frame_finish:
+	net = dev_net(skb->dev);
+	br_handle_frame_finish(net, NULL, skb);
+#else
+	br_handle_frame_finish(dev_net(skb->dev), NULL, skb);
+#endif
+	return RX_HANDLER_CONSUMED;
+}
+
 /*
  * Return NULL if skb is handled
  * note: already called with rcu_read_lock
@@ -215,7 +267,6 @@ rx_handler_result_t br_handle_frame(struct sk_buff **pskb)
 	struct net_bridge_port *p;
 	struct sk_buff *skb = *pskb;
 	const unsigned char *dest = eth_hdr(skb)->h_dest;
-	br_should_route_hook_t *rhook;
 
 	if (unlikely(skb->pkt_type == PACKET_LOOPBACK))
 		return RX_HANDLER_PASS;
@@ -227,6 +278,8 @@ rx_handler_result_t br_handle_frame(struct sk_buff **pskb)
 	if (!skb)
 		return RX_HANDLER_CONSUMED;
 
+	memset(skb->cb, 0, sizeof(struct br_input_skb_cb));
+
 	p = br_port_get_rcu(skb->dev);
 	if (p->flags & BR_VLAN_TUNNEL) {
 		if (br_handle_ingress_vlan_tunnel(skb, p,
@@ -289,23 +342,11 @@ rx_handler_result_t br_handle_frame(struct sk_buff **pskb)
 forward:
 	switch (p->state) {
 	case BR_STATE_FORWARDING:
-		rhook = rcu_dereference(br_should_route_hook);
-		if (rhook) {
-			if ((*rhook)(skb)) {
-				*pskb = skb;
-				return RX_HANDLER_PASS;
-			}
-			dest = eth_hdr(skb)->h_dest;
-		}
-		/* fall through */
 	case BR_STATE_LEARNING:
 		if (ether_addr_equal(p->br->dev->dev_addr, dest))
 			skb->pkt_type = PACKET_HOST;
 
-		NF_HOOK(NFPROTO_BRIDGE, NF_BR_PRE_ROUTING,
-			dev_net(skb->dev), NULL, skb, skb->dev, NULL,
-			br_handle_frame_finish);
-		break;
+		return nf_hook_bridge_pre(skb, pskb);
 	default:
 drop:
 		kfree_skb(skb);
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 7946aa3b6e09..4bea2f11da9b 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -425,15 +425,16 @@ struct br_input_skb_cb {
 	struct net_device *brdev;
 
 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
-	int igmp;
-	int mrouters_only;
+	u8 igmp;
+	u8 mrouters_only:1;
 #endif
-
-	bool proxyarp_replied;
-	bool src_port_isolated;
-
+	u8 proxyarp_replied:1;
+	u8 src_port_isolated:1;
 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
-	bool vlan_filtered;
+	u8 vlan_filtered:1;
+#endif
+#ifdef CONFIG_NETFILTER_FAMILY_BRIDGE
+	u8 br_netfilter_broute:1;
 #endif
 
 #ifdef CONFIG_NET_SWITCHDEV
diff --git a/net/bridge/netfilter/ebtable_broute.c b/net/bridge/netfilter/ebtable_broute.c
index 276b60262981..ec2652a459da 100644
--- a/net/bridge/netfilter/ebtable_broute.c
+++ b/net/bridge/netfilter/ebtable_broute.c
@@ -15,6 +15,8 @@
 #include <linux/module.h>
 #include <linux/if_bridge.h>
 
+#include "../br_private.h"
+
 /* EBT_ACCEPT means the frame will be bridged
  * EBT_DROP means the frame will be routed
  */
@@ -48,30 +50,63 @@ static const struct ebt_table broute_table = {
 	.me		= THIS_MODULE,
 };
 
-static int ebt_broute(struct sk_buff *skb)
+static unsigned int ebt_broute(void *priv, struct sk_buff *skb,
+			       const struct nf_hook_state *s)
 {
+	struct net_bridge_port *p = br_port_get_rcu(skb->dev);
 	struct nf_hook_state state;
+	unsigned char *dest;
 	int ret;
 
+	if (!p || p->state != BR_STATE_FORWARDING)
+		return NF_ACCEPT;
+
 	nf_hook_state_init(&state, NF_BR_BROUTING,
-			   NFPROTO_BRIDGE, skb->dev, NULL, NULL,
-			   dev_net(skb->dev), NULL);
+			   NFPROTO_BRIDGE, s->in, NULL, NULL,
+			   s->net, NULL);
 
 	ret = ebt_do_table(skb, &state, state.net->xt.broute_table);
-	if (ret == NF_DROP)
-		return 1; /* route it */
-	return 0; /* bridge it */
+
+	if (ret != NF_DROP)
+		return ret;
+
+	/* DROP in ebtables -t broute means that the
+	 * skb should be routed, not bridged.
+	 * This is awkward, but can't be changed for compatibility
+	 * reasons.
+	 *
+	 * We map DROP to ACCEPT and set the ->br_netfilter_broute flag.
+	 */
+	BR_INPUT_SKB_CB(skb)->br_netfilter_broute = 1;
+
+	/* undo PACKET_HOST mangling done in br_input in case the dst
+	 * address matches the logical bridge but not the port.
+	 */
+	dest = eth_hdr(skb)->h_dest;
+	if (skb->pkt_type == PACKET_HOST &&
+	    !ether_addr_equal(skb->dev->dev_addr, dest) &&
+	     ether_addr_equal(p->br->dev->dev_addr, dest))
+		skb->pkt_type = PACKET_OTHERHOST;
+
+	return NF_ACCEPT;
 }
 
+static const struct nf_hook_ops ebt_ops_broute = {
+	.hook		= ebt_broute,
+	.pf		= NFPROTO_BRIDGE,
+	.hooknum	= NF_BR_PRE_ROUTING,
+	.priority	= NF_BR_PRI_FIRST,
+};
+
 static int __net_init broute_net_init(struct net *net)
 {
-	return ebt_register_table(net, &broute_table, NULL,
+	return ebt_register_table(net, &broute_table, &ebt_ops_broute,
 				  &net->xt.broute_table);
 }
 
 static void __net_exit broute_net_exit(struct net *net)
 {
-	ebt_unregister_table(net, net->xt.broute_table, NULL);
+	ebt_unregister_table(net, net->xt.broute_table, &ebt_ops_broute);
 }
 
 static struct pernet_operations broute_net_ops = {
@@ -81,21 +116,11 @@ static struct pernet_operations broute_net_ops = {
 
 static int __init ebtable_broute_init(void)
 {
-	int ret;
-
-	ret = register_pernet_subsys(&broute_net_ops);
-	if (ret < 0)
-		return ret;
-	/* see br_input.c */
-	RCU_INIT_POINTER(br_should_route_hook,
-			   (br_should_route_hook_t *)ebt_broute);
-	return 0;
+	return register_pernet_subsys(&broute_net_ops);
 }
 
 static void __exit ebtable_broute_fini(void)
 {
-	RCU_INIT_POINTER(br_should_route_hook, NULL);
-	synchronize_net();
 	unregister_pernet_subsys(&broute_net_ops);
 }
 
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index eb15891f8b9f..383f0328ff68 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -1221,10 +1221,6 @@ int ebt_register_table(struct net *net, const struct ebt_table *input_table,
 	mutex_unlock(&ebt_mutex);
 
 	WRITE_ONCE(*res, table);
-
-	if (!ops)
-		return 0;
-
 	ret = nf_register_net_hooks(net, ops, hweight32(table->valid_hooks));
 	if (ret) {
 		__ebt_unregister_table(net, table);
@@ -1248,8 +1244,7 @@ out:
 void ebt_unregister_table(struct net *net, struct ebt_table *table,
 			  const struct nf_hook_ops *ops)
 {
-	if (ops)
-		nf_unregister_net_hooks(net, ops, hweight32(table->valid_hooks));
+	nf_unregister_net_hooks(net, ops, hweight32(table->valid_hooks));
 	__ebt_unregister_table(net, table);
 }
 
diff --git a/net/ipv4/netfilter/Kconfig b/net/ipv4/netfilter/Kconfig
index c98391d49200..1412b029f37f 100644
--- a/net/ipv4/netfilter/Kconfig
+++ b/net/ipv4/netfilter/Kconfig
@@ -27,14 +27,6 @@ config NF_TABLES_IPV4
 
 if NF_TABLES_IPV4
 
-config NFT_CHAIN_ROUTE_IPV4
-	tristate "IPv4 nf_tables route chain support"
-	help
-	  This option enables the "route" chain for IPv4 in nf_tables. This
-	  chain type is used to force packet re-routing after mangling header
-	  fields such as the source, destination, type of service and
-	  the packet mark.
-
 config NFT_REJECT_IPV4
 	select NF_REJECT_IPV4
 	default NFT_REJECT
@@ -232,16 +224,10 @@ if IP_NF_NAT
 
 config IP_NF_TARGET_MASQUERADE
 	tristate "MASQUERADE target support"
-	select NF_NAT_MASQUERADE
-	default m if NETFILTER_ADVANCED=n
+	select NETFILTER_XT_TARGET_MASQUERADE
 	help
-	  Masquerading is a special case of NAT: all outgoing connections are
-	  changed to seem to come from a particular interface's address, and
-	  if the interface goes down, those connections are lost.  This is
-	  only useful for dialup accounts with dynamic IP address (ie. your IP
-	  address will be different on next dialup).
-
-	  To compile it as a module, choose M here.  If unsure, say N.
+	  This is a backwards-compat option for the user's convenience
+	  (e.g. when running oldconfig). It selects NETFILTER_XT_TARGET_MASQUERADE.
 
 config IP_NF_TARGET_NETMAP
 	tristate "NETMAP target support"
diff --git a/net/ipv4/netfilter/Makefile b/net/ipv4/netfilter/Makefile
index e241f5188ebe..c50e0ec095d2 100644
--- a/net/ipv4/netfilter/Makefile
+++ b/net/ipv4/netfilter/Makefile
@@ -24,7 +24,6 @@ nf_nat_snmp_basic-y := nf_nat_snmp_basic.asn1.o nf_nat_snmp_basic_main.o
 $(obj)/nf_nat_snmp_basic_main.o: $(obj)/nf_nat_snmp_basic.asn1.h
 obj-$(CONFIG_NF_NAT_SNMP_BASIC) += nf_nat_snmp_basic.o
 
-obj-$(CONFIG_NFT_CHAIN_ROUTE_IPV4) += nft_chain_route_ipv4.o
 obj-$(CONFIG_NFT_REJECT_IPV4) += nft_reject_ipv4.o
 obj-$(CONFIG_NFT_FIB_IPV4) += nft_fib_ipv4.o
 obj-$(CONFIG_NFT_DUP_IPV4) += nft_dup_ipv4.o
@@ -49,7 +48,6 @@ obj-$(CONFIG_IP_NF_MATCH_RPFILTER) += ipt_rpfilter.o
 # targets
 obj-$(CONFIG_IP_NF_TARGET_CLUSTERIP) += ipt_CLUSTERIP.o
 obj-$(CONFIG_IP_NF_TARGET_ECN) += ipt_ECN.o
-obj-$(CONFIG_IP_NF_TARGET_MASQUERADE) += ipt_MASQUERADE.o
 obj-$(CONFIG_IP_NF_TARGET_REJECT) += ipt_REJECT.o
 obj-$(CONFIG_IP_NF_TARGET_SYNPROXY) += ipt_SYNPROXY.o
 
diff --git a/net/ipv4/netfilter/nft_chain_route_ipv4.c b/net/ipv4/netfilter/nft_chain_route_ipv4.c
deleted file mode 100644
index 7d82934c46f4..000000000000
--- a/net/ipv4/netfilter/nft_chain_route_ipv4.c
+++ /dev/null
@@ -1,89 +0,0 @@
-/*
- * Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
- * Copyright (c) 2012 Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/list.h>
-#include <linux/skbuff.h>
-#include <linux/netlink.h>
-#include <linux/netfilter.h>
-#include <linux/netfilter_ipv4.h>
-#include <linux/netfilter/nfnetlink.h>
-#include <linux/netfilter/nf_tables.h>
-#include <net/netfilter/nf_tables.h>
-#include <net/netfilter/nf_tables_ipv4.h>
-#include <net/route.h>
-#include <net/ip.h>
-
-static unsigned int nf_route_table_hook(void *priv,
-					struct sk_buff *skb,
-					const struct nf_hook_state *state)
-{
-	unsigned int ret;
-	struct nft_pktinfo pkt;
-	u32 mark;
-	__be32 saddr, daddr;
-	u_int8_t tos;
-	const struct iphdr *iph;
-	int err;
-
-	nft_set_pktinfo(&pkt, skb, state);
-	nft_set_pktinfo_ipv4(&pkt, skb);
-
-	mark = skb->mark;
-	iph = ip_hdr(skb);
-	saddr = iph->saddr;
-	daddr = iph->daddr;
-	tos = iph->tos;
-
-	ret = nft_do_chain(&pkt, priv);
-	if (ret != NF_DROP && ret != NF_STOLEN) {
-		iph = ip_hdr(skb);
-
-		if (iph->saddr != saddr ||
-		    iph->daddr != daddr ||
-		    skb->mark != mark ||
-		    iph->tos != tos) {
-			err = ip_route_me_harder(state->net, skb, RTN_UNSPEC);
-			if (err < 0)
-				ret = NF_DROP_ERR(err);
-		}
-	}
-	return ret;
-}
-
-static const struct nft_chain_type nft_chain_route_ipv4 = {
-	.name		= "route",
-	.type		= NFT_CHAIN_T_ROUTE,
-	.family		= NFPROTO_IPV4,
-	.owner		= THIS_MODULE,
-	.hook_mask	= (1 << NF_INET_LOCAL_OUT),
-	.hooks		= {
-		[NF_INET_LOCAL_OUT]	= nf_route_table_hook,
-	},
-};
-
-static int __init nft_chain_route_init(void)
-{
-	nft_register_chain_type(&nft_chain_route_ipv4);
-
-	return 0;
-}
-
-static void __exit nft_chain_route_exit(void)
-{
-	nft_unregister_chain_type(&nft_chain_route_ipv4);
-}
-
-module_init(nft_chain_route_init);
-module_exit(nft_chain_route_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
-MODULE_ALIAS_NFT_CHAIN(AF_INET, "route");
diff --git a/net/ipv6/netfilter/Kconfig b/net/ipv6/netfilter/Kconfig
index ddc99a1653aa..086fc669279e 100644
--- a/net/ipv6/netfilter/Kconfig
+++ b/net/ipv6/netfilter/Kconfig
@@ -23,14 +23,6 @@ config NF_TABLES_IPV6
 
 if NF_TABLES_IPV6
 
-config NFT_CHAIN_ROUTE_IPV6
-	tristate "IPv6 nf_tables route chain support"
-	help
-	  This option enables the "route" chain for IPv6 in nf_tables. This
-	  chain type is used to force packet re-routing after mangling header
-	  fields such as the source, destination, flowlabel, hop-limit and
-	  the packet mark.
-
 config NFT_REJECT_IPV6
 	select NF_REJECT_IPV6
 	default NFT_REJECT
@@ -278,15 +270,10 @@ if IP6_NF_NAT
 
 config IP6_NF_TARGET_MASQUERADE
 	tristate "MASQUERADE target support"
-	select NF_NAT_MASQUERADE
+	select NETFILTER_XT_TARGET_MASQUERADE
 	help
-	  Masquerading is a special case of NAT: all outgoing connections are
-	  changed to seem to come from a particular interface's address, and
-	  if the interface goes down, those connections are lost.  This is
-	  only useful for dialup accounts with dynamic IP address (ie. your IP
-	  address will be different on next dialup).
-
-	  To compile it as a module, choose M here.  If unsure, say N.
+	  This is a backwards-compat option for the user's convenience
+	  (e.g. when running oldconfig). It selects NETFILTER_XT_TARGET_MASQUERADE.
 
 config IP6_NF_TARGET_NPT
 	tristate "NPT (Network Prefix translation) target support"
diff --git a/net/ipv6/netfilter/Makefile b/net/ipv6/netfilter/Makefile
index 3853c648ebaa..731a74c60dca 100644
--- a/net/ipv6/netfilter/Makefile
+++ b/net/ipv6/netfilter/Makefile
@@ -27,7 +27,6 @@ obj-$(CONFIG_NF_REJECT_IPV6) += nf_reject_ipv6.o
 obj-$(CONFIG_NF_DUP_IPV6) += nf_dup_ipv6.o
 
 # nf_tables
-obj-$(CONFIG_NFT_CHAIN_ROUTE_IPV6) += nft_chain_route_ipv6.o
 obj-$(CONFIG_NFT_REJECT_IPV6) += nft_reject_ipv6.o
 obj-$(CONFIG_NFT_DUP_IPV6) += nft_dup_ipv6.o
 obj-$(CONFIG_NFT_FIB_IPV6) += nft_fib_ipv6.o
@@ -47,7 +46,6 @@ obj-$(CONFIG_IP6_NF_MATCH_RT) += ip6t_rt.o
 obj-$(CONFIG_IP6_NF_MATCH_SRH) += ip6t_srh.o
 
 # targets
-obj-$(CONFIG_IP6_NF_TARGET_MASQUERADE) += ip6t_MASQUERADE.o
 obj-$(CONFIG_IP6_NF_TARGET_NPT) += ip6t_NPT.o
 obj-$(CONFIG_IP6_NF_TARGET_REJECT) += ip6t_REJECT.o
 obj-$(CONFIG_IP6_NF_TARGET_SYNPROXY) += ip6t_SYNPROXY.o
diff --git a/net/ipv6/netfilter/ip6t_MASQUERADE.c b/net/ipv6/netfilter/ip6t_MASQUERADE.c
deleted file mode 100644
index 29c7f1915a96..000000000000
--- a/net/ipv6/netfilter/ip6t_MASQUERADE.c
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * Copyright (c) 2011 Patrick McHardy <kaber@trash.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Based on Rusty Russell's IPv6 MASQUERADE target. Development of IPv6
- * NAT funded by Astaro.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/netdevice.h>
-#include <linux/ipv6.h>
-#include <linux/netfilter.h>
-#include <linux/netfilter_ipv6.h>
-#include <linux/netfilter/x_tables.h>
-#include <net/netfilter/nf_nat.h>
-#include <net/addrconf.h>
-#include <net/ipv6.h>
-#include <net/netfilter/ipv6/nf_nat_masquerade.h>
-
-static unsigned int
-masquerade_tg6(struct sk_buff *skb, const struct xt_action_param *par)
-{
-	return nf_nat_masquerade_ipv6(skb, par->targinfo, xt_out(par));
-}
-
-static int masquerade_tg6_checkentry(const struct xt_tgchk_param *par)
-{
-	const struct nf_nat_range2 *range = par->targinfo;
-
-	if (range->flags & NF_NAT_RANGE_MAP_IPS)
-		return -EINVAL;
-	return nf_ct_netns_get(par->net, par->family);
-}
-
-static void masquerade_tg6_destroy(const struct xt_tgdtor_param *par)
-{
-	nf_ct_netns_put(par->net, par->family);
-}
-
-static struct xt_target masquerade_tg6_reg __read_mostly = {
-	.name		= "MASQUERADE",
-	.family		= NFPROTO_IPV6,
-	.checkentry	= masquerade_tg6_checkentry,
-	.destroy	= masquerade_tg6_destroy,
-	.target		= masquerade_tg6,
-	.targetsize	= sizeof(struct nf_nat_range),
-	.table		= "nat",
-	.hooks		= 1 << NF_INET_POST_ROUTING,
-	.me		= THIS_MODULE,
-};
-
-static int __init masquerade_tg6_init(void)
-{
-	int err;
-
-	err = xt_register_target(&masquerade_tg6_reg);
-	if (err)
-		return err;
-
-	err = nf_nat_masquerade_ipv6_register_notifier();
-	if (err)
-		xt_unregister_target(&masquerade_tg6_reg);
-
-	return err;
-}
-static void __exit masquerade_tg6_exit(void)
-{
-	nf_nat_masquerade_ipv6_unregister_notifier();
-	xt_unregister_target(&masquerade_tg6_reg);
-}
-
-module_init(masquerade_tg6_init);
-module_exit(masquerade_tg6_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
-MODULE_DESCRIPTION("Xtables: automatic address SNAT");
diff --git a/net/ipv6/netfilter/nft_chain_route_ipv6.c b/net/ipv6/netfilter/nft_chain_route_ipv6.c
deleted file mode 100644
index da3f1f8cb325..000000000000
--- a/net/ipv6/netfilter/nft_chain_route_ipv6.c
+++ /dev/null
@@ -1,91 +0,0 @@
-/*
- * Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
- * Copyright (c) 2012 Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Development of this code funded by Astaro AG (http://www.astaro.com/)
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/list.h>
-#include <linux/skbuff.h>
-#include <linux/netlink.h>
-#include <linux/netfilter.h>
-#include <linux/netfilter_ipv6.h>
-#include <linux/netfilter/nfnetlink.h>
-#include <linux/netfilter/nf_tables.h>
-#include <net/netfilter/nf_tables.h>
-#include <net/netfilter/nf_tables_ipv6.h>
-#include <net/route.h>
-
-static unsigned int nf_route_table_hook(void *priv,
-					struct sk_buff *skb,
-					const struct nf_hook_state *state)
-{
-	unsigned int ret;
-	struct nft_pktinfo pkt;
-	struct in6_addr saddr, daddr;
-	u_int8_t hop_limit;
-	u32 mark, flowlabel;
-	int err;
-
-	nft_set_pktinfo(&pkt, skb, state);
-	nft_set_pktinfo_ipv6(&pkt, skb);
-
-	/* save source/dest address, mark, hoplimit, flowlabel, priority */
-	memcpy(&saddr, &ipv6_hdr(skb)->saddr, sizeof(saddr));
-	memcpy(&daddr, &ipv6_hdr(skb)->daddr, sizeof(daddr));
-	mark = skb->mark;
-	hop_limit = ipv6_hdr(skb)->hop_limit;
-
-	/* flowlabel and prio (includes version, which shouldn't change either */
-	flowlabel = *((u32 *)ipv6_hdr(skb));
-
-	ret = nft_do_chain(&pkt, priv);
-	if (ret != NF_DROP && ret != NF_STOLEN &&
-	    (memcmp(&ipv6_hdr(skb)->saddr, &saddr, sizeof(saddr)) ||
-	     memcmp(&ipv6_hdr(skb)->daddr, &daddr, sizeof(daddr)) ||
-	     skb->mark != mark ||
-	     ipv6_hdr(skb)->hop_limit != hop_limit ||
-	     flowlabel != *((u_int32_t *)ipv6_hdr(skb)))) {
-		err = ip6_route_me_harder(state->net, skb);
-		if (err < 0)
-			ret = NF_DROP_ERR(err);
-	}
-
-	return ret;
-}
-
-static const struct nft_chain_type nft_chain_route_ipv6 = {
-	.name		= "route",
-	.type		= NFT_CHAIN_T_ROUTE,
-	.family		= NFPROTO_IPV6,
-	.owner		= THIS_MODULE,
-	.hook_mask	= (1 << NF_INET_LOCAL_OUT),
-	.hooks		= {
-		[NF_INET_LOCAL_OUT]	= nf_route_table_hook,
-	},
-};
-
-static int __init nft_chain_route_init(void)
-{
-	nft_register_chain_type(&nft_chain_route_ipv6);
-
-	return 0;
-}
-
-static void __exit nft_chain_route_exit(void)
-{
-	nft_unregister_chain_type(&nft_chain_route_ipv6);
-}
-
-module_init(nft_chain_route_init);
-module_exit(nft_chain_route_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
-MODULE_ALIAS_NFT_CHAIN(AF_INET6, "route");
diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig
index 6548271209a0..02b281d3c167 100644
--- a/net/netfilter/Kconfig
+++ b/net/netfilter/Kconfig
@@ -404,11 +404,6 @@ config NF_NAT
 	  forms of full Network Address Port Translation. This can be
 	  controlled by iptables, ip6tables or nft.
 
-config NF_NAT_NEEDED
-	bool
-	depends on NF_NAT
-	default y
-
 config NF_NAT_AMANDA
 	tristate
 	depends on NF_CONNTRACK && NF_NAT
@@ -1002,6 +997,20 @@ config NETFILTER_XT_TARGET_REDIRECT
 
 	To compile it as a module, choose M here. If unsure, say N.
 
+config NETFILTER_XT_TARGET_MASQUERADE
+	tristate "MASQUERADE target support"
+	depends on NF_NAT
+	default m if NETFILTER_ADVANCED=n
+	select NF_NAT_MASQUERADE
+	help
+	  Masquerading is a special case of NAT: all outgoing connections are
+	  changed to seem to come from a particular interface's address, and
+	  if the interface goes down, those connections are lost.  This is
+	  only useful for dialup accounts with dynamic IP address (ie. your IP
+	  address will be different on next dialup).
+
+	  To compile it as a module, choose M here.  If unsure, say N.
+
 config NETFILTER_XT_TARGET_TEE
 	tristate '"TEE" - packet cloning to alternate destination'
 	depends on NETFILTER_ADVANCED
diff --git a/net/netfilter/Makefile b/net/netfilter/Makefile
index 4894a85cdd0b..72cca6b48960 100644
--- a/net/netfilter/Makefile
+++ b/net/netfilter/Makefile
@@ -77,7 +77,8 @@ obj-$(CONFIG_NF_DUP_NETDEV)	+= nf_dup_netdev.o
 nf_tables-objs := nf_tables_core.o nf_tables_api.o nft_chain_filter.o \
 		  nf_tables_trace.o nft_immediate.o nft_cmp.o nft_range.o \
 		  nft_bitwise.o nft_byteorder.o nft_payload.o nft_lookup.o \
-		  nft_dynset.o nft_meta.o nft_rt.o nft_exthdr.o
+		  nft_dynset.o nft_meta.o nft_rt.o nft_exthdr.o \
+		  nft_chain_route.o
 
 nf_tables_set-objs := nf_tables_set_core.o \
 		      nft_set_hash.o nft_set_bitmap.o nft_set_rbtree.o
@@ -147,6 +148,7 @@ obj-$(CONFIG_NETFILTER_XT_TARGET_NFLOG) += xt_NFLOG.o
 obj-$(CONFIG_NETFILTER_XT_TARGET_NFQUEUE) += xt_NFQUEUE.o
 obj-$(CONFIG_NETFILTER_XT_TARGET_RATEEST) += xt_RATEEST.o
 obj-$(CONFIG_NETFILTER_XT_TARGET_REDIRECT) += xt_REDIRECT.o
+obj-$(CONFIG_NETFILTER_XT_TARGET_MASQUERADE) += xt_MASQUERADE.o
 obj-$(CONFIG_NETFILTER_XT_TARGET_SECMARK) += xt_SECMARK.o
 obj-$(CONFIG_NETFILTER_XT_TARGET_TPROXY) += xt_TPROXY.o
 obj-$(CONFIG_NETFILTER_XT_TARGET_TCPMSS) += xt_TCPMSS.o
diff --git a/net/netfilter/core.c b/net/netfilter/core.c
index 93aaec3a54ec..71f06900473e 100644
--- a/net/netfilter/core.c
+++ b/net/netfilter/core.c
@@ -23,6 +23,7 @@
 #include <linux/mm.h>
 #include <linux/rcupdate.h>
 #include <net/net_namespace.h>
+#include <net/netfilter/nf_queue.h>
 #include <net/sock.h>
 
 #include "nf_internals.h"
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index 4b933669fd83..ab119a7540db 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -831,6 +831,10 @@ __ip_vs_update_dest(struct ip_vs_service *svc, struct ip_vs_dest *dest,
 	conn_flags = udest->conn_flags & IP_VS_CONN_F_DEST_MASK;
 	conn_flags |= IP_VS_CONN_F_INACTIVE;
 
+	/* set the tunnel info */
+	dest->tun_type = udest->tun_type;
+	dest->tun_port = udest->tun_port;
+
 	/* set the IP_VS_CONN_F_NOOUTPUT flag if not masquerading/NAT */
 	if ((conn_flags & IP_VS_CONN_F_FWD_MASK) != IP_VS_CONN_F_MASQ) {
 		conn_flags |= IP_VS_CONN_F_NOOUTPUT;
@@ -987,6 +991,13 @@ ip_vs_add_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest)
 		return -ERANGE;
 	}
 
+	if (udest->tun_type == IP_VS_CONN_F_TUNNEL_TYPE_GUE) {
+		if (udest->tun_port == 0) {
+			pr_err("%s(): tunnel port is zero\n", __func__);
+			return -EINVAL;
+		}
+	}
+
 	ip_vs_addr_copy(udest->af, &daddr, &udest->addr);
 
 	/* We use function that requires RCU lock */
@@ -1051,6 +1062,13 @@ ip_vs_edit_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest)
 		return -ERANGE;
 	}
 
+	if (udest->tun_type == IP_VS_CONN_F_TUNNEL_TYPE_GUE) {
+		if (udest->tun_port == 0) {
+			pr_err("%s(): tunnel port is zero\n", __func__);
+			return -EINVAL;
+		}
+	}
+
 	ip_vs_addr_copy(udest->af, &daddr, &udest->addr);
 
 	/* We use function that requires RCU lock */
@@ -2333,6 +2351,7 @@ static void ip_vs_copy_udest_compat(struct ip_vs_dest_user_kern *udest,
 	udest->u_threshold	= udest_compat->u_threshold;
 	udest->l_threshold	= udest_compat->l_threshold;
 	udest->af		= AF_INET;
+	udest->tun_type		= IP_VS_CONN_F_TUNNEL_TYPE_IPIP;
 }
 
 static int
@@ -2890,6 +2909,8 @@ static const struct nla_policy ip_vs_dest_policy[IPVS_DEST_ATTR_MAX + 1] = {
 	[IPVS_DEST_ATTR_PERSIST_CONNS]	= { .type = NLA_U32 },
 	[IPVS_DEST_ATTR_STATS]		= { .type = NLA_NESTED },
 	[IPVS_DEST_ATTR_ADDR_FAMILY]	= { .type = NLA_U16 },
+	[IPVS_DEST_ATTR_TUN_TYPE]	= { .type = NLA_U8 },
+	[IPVS_DEST_ATTR_TUN_PORT]	= { .type = NLA_U16 },
 };
 
 static int ip_vs_genl_fill_stats(struct sk_buff *skb, int container_type,
@@ -3193,6 +3214,10 @@ static int ip_vs_genl_fill_dest(struct sk_buff *skb, struct ip_vs_dest *dest)
 			 IP_VS_CONN_F_FWD_MASK)) ||
 	    nla_put_u32(skb, IPVS_DEST_ATTR_WEIGHT,
 			atomic_read(&dest->weight)) ||
+	    nla_put_u8(skb, IPVS_DEST_ATTR_TUN_TYPE,
+		       dest->tun_type) ||
+	    nla_put_be16(skb, IPVS_DEST_ATTR_TUN_PORT,
+			 dest->tun_port) ||
 	    nla_put_u32(skb, IPVS_DEST_ATTR_U_THRESH, dest->u_threshold) ||
 	    nla_put_u32(skb, IPVS_DEST_ATTR_L_THRESH, dest->l_threshold) ||
 	    nla_put_u32(skb, IPVS_DEST_ATTR_ACTIVE_CONNS,
@@ -3315,12 +3340,14 @@ static int ip_vs_genl_parse_dest(struct ip_vs_dest_user_kern *udest,
 	/* If a full entry was requested, check for the additional fields */
 	if (full_entry) {
 		struct nlattr *nla_fwd, *nla_weight, *nla_u_thresh,
-			      *nla_l_thresh;
+			      *nla_l_thresh, *nla_tun_type, *nla_tun_port;
 
 		nla_fwd		= attrs[IPVS_DEST_ATTR_FWD_METHOD];
 		nla_weight	= attrs[IPVS_DEST_ATTR_WEIGHT];
 		nla_u_thresh	= attrs[IPVS_DEST_ATTR_U_THRESH];
 		nla_l_thresh	= attrs[IPVS_DEST_ATTR_L_THRESH];
+		nla_tun_type	= attrs[IPVS_DEST_ATTR_TUN_TYPE];
+		nla_tun_port	= attrs[IPVS_DEST_ATTR_TUN_PORT];
 
 		if (!(nla_fwd && nla_weight && nla_u_thresh && nla_l_thresh))
 			return -EINVAL;
@@ -3330,6 +3357,12 @@ static int ip_vs_genl_parse_dest(struct ip_vs_dest_user_kern *udest,
 		udest->weight = nla_get_u32(nla_weight);
 		udest->u_threshold = nla_get_u32(nla_u_thresh);
 		udest->l_threshold = nla_get_u32(nla_l_thresh);
+
+		if (nla_tun_type)
+			udest->tun_type = nla_get_u8(nla_tun_type);
+
+		if (nla_tun_port)
+			udest->tun_port = nla_get_be16(nla_tun_port);
 	}
 
 	return 0;
diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
index 175349fcf91f..8d6f94b67772 100644
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -32,6 +32,7 @@
 #include <linux/slab.h>
 #include <linux/tcp.h>                  /* for tcphdr */
 #include <net/ip.h>
+#include <net/gue.h>
 #include <net/tcp.h>                    /* for csum_tcpudp_magic */
 #include <net/udp.h>
 #include <net/icmp.h>                   /* for icmp_send */
@@ -382,6 +383,10 @@ __ip_vs_get_out_rt(struct netns_ipvs *ipvs, int skb_af, struct sk_buff *skb,
 		mtu = dst_mtu(&rt->dst);
 	} else {
 		mtu = dst_mtu(&rt->dst) - sizeof(struct iphdr);
+		if (!dest)
+			goto err_put;
+		if (dest->tun_type == IP_VS_CONN_F_TUNNEL_TYPE_GUE)
+			mtu -= sizeof(struct udphdr) + sizeof(struct guehdr);
 		if (mtu < 68) {
 			IP_VS_DBG_RL("%s(): mtu less than 68\n", __func__);
 			goto err_put;
@@ -533,6 +538,10 @@ __ip_vs_get_out_rt_v6(struct netns_ipvs *ipvs, int skb_af, struct sk_buff *skb,
 		mtu = dst_mtu(&rt->dst);
 	else {
 		mtu = dst_mtu(&rt->dst) - sizeof(struct ipv6hdr);
+		if (!dest)
+			goto err_put;
+		if (dest->tun_type == IP_VS_CONN_F_TUNNEL_TYPE_GUE)
+			mtu -= sizeof(struct udphdr) + sizeof(struct guehdr);
 		if (mtu < IPV6_MIN_MTU) {
 			IP_VS_DBG_RL("%s(): mtu less than %d\n", __func__,
 				     IPV6_MIN_MTU);
@@ -989,6 +998,41 @@ static inline int __tun_gso_type_mask(int encaps_af, int orig_af)
 	}
 }
 
+static int
+ipvs_gue_encap(struct net *net, struct sk_buff *skb,
+	       struct ip_vs_conn *cp, __u8 *next_protocol)
+{
+	__be16 dport;
+	__be16 sport = udp_flow_src_port(net, skb, 0, 0, false);
+	struct udphdr  *udph;	/* Our new UDP header */
+	struct guehdr  *gueh;	/* Our new GUE header */
+
+	skb_push(skb, sizeof(struct guehdr));
+
+	gueh = (struct guehdr *)skb->data;
+
+	gueh->control = 0;
+	gueh->version = 0;
+	gueh->hlen = 0;
+	gueh->flags = 0;
+	gueh->proto_ctype = *next_protocol;
+
+	skb_push(skb, sizeof(struct udphdr));
+	skb_reset_transport_header(skb);
+
+	udph = udp_hdr(skb);
+
+	dport = cp->dest->tun_port;
+	udph->dest = dport;
+	udph->source = sport;
+	udph->len = htons(skb->len);
+	udph->check = 0;
+
+	*next_protocol = IPPROTO_UDP;
+
+	return 0;
+}
+
 /*
  *   IP Tunneling transmitter
  *
@@ -1025,6 +1069,7 @@ ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
 	struct iphdr  *iph;			/* Our new IP header */
 	unsigned int max_headroom;		/* The extra header space needed */
 	int ret, local;
+	int tun_type, gso_type;
 
 	EnterFunction(10);
 
@@ -1046,6 +1091,11 @@ ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
 	 */
 	max_headroom = LL_RESERVED_SPACE(tdev) + sizeof(struct iphdr);
 
+	tun_type = cp->dest->tun_type;
+
+	if (tun_type == IP_VS_CONN_F_TUNNEL_TYPE_GUE)
+		max_headroom += sizeof(struct udphdr) + sizeof(struct guehdr);
+
 	/* We only care about the df field if sysctl_pmtu_disc(ipvs) is set */
 	dfp = sysctl_pmtu_disc(ipvs) ? &df : NULL;
 	skb = ip_vs_prepare_tunneled_skb(skb, cp->af, max_headroom,
@@ -1054,11 +1104,20 @@ ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
 	if (IS_ERR(skb))
 		goto tx_error;
 
-	if (iptunnel_handle_offloads(skb, __tun_gso_type_mask(AF_INET, cp->af)))
+	gso_type = __tun_gso_type_mask(AF_INET, cp->af);
+	if (tun_type == IP_VS_CONN_F_TUNNEL_TYPE_GUE)
+		gso_type |= SKB_GSO_UDP_TUNNEL;
+
+	if (iptunnel_handle_offloads(skb, gso_type))
 		goto tx_error;
 
 	skb->transport_header = skb->network_header;
 
+	skb_set_inner_ipproto(skb, next_protocol);
+
+	if (tun_type == IP_VS_CONN_F_TUNNEL_TYPE_GUE)
+		ipvs_gue_encap(net, skb, cp, &next_protocol);
+
 	skb_push(skb, sizeof(struct iphdr));
 	skb_reset_network_header(skb);
 	memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
@@ -1102,6 +1161,8 @@ int
 ip_vs_tunnel_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
 		     struct ip_vs_protocol *pp, struct ip_vs_iphdr *ipvsh)
 {
+	struct netns_ipvs *ipvs = cp->ipvs;
+	struct net *net = ipvs->net;
 	struct rt6_info *rt;		/* Route to the other host */
 	struct in6_addr saddr;		/* Source for tunnel */
 	struct net_device *tdev;	/* Device to other host */
@@ -1112,10 +1173,11 @@ ip_vs_tunnel_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
 	struct ipv6hdr  *iph;		/* Our new IP header */
 	unsigned int max_headroom;	/* The extra header space needed */
 	int ret, local;
+	int tun_type, gso_type;
 
 	EnterFunction(10);
 
-	local = __ip_vs_get_out_rt_v6(cp->ipvs, cp->af, skb, cp->dest,
+	local = __ip_vs_get_out_rt_v6(ipvs, cp->af, skb, cp->dest,
 				      &cp->daddr.in6,
 				      &saddr, ipvsh, 1,
 				      IP_VS_RT_MODE_LOCAL |
@@ -1134,17 +1196,31 @@ ip_vs_tunnel_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
 	 */
 	max_headroom = LL_RESERVED_SPACE(tdev) + sizeof(struct ipv6hdr);
 
+	tun_type = cp->dest->tun_type;
+
+	if (tun_type == IP_VS_CONN_F_TUNNEL_TYPE_GUE)
+		max_headroom += sizeof(struct udphdr) + sizeof(struct guehdr);
+
 	skb = ip_vs_prepare_tunneled_skb(skb, cp->af, max_headroom,
 					 &next_protocol, &payload_len,
 					 &dsfield, &ttl, NULL);
 	if (IS_ERR(skb))
 		goto tx_error;
 
-	if (iptunnel_handle_offloads(skb, __tun_gso_type_mask(AF_INET6, cp->af)))
+	gso_type = __tun_gso_type_mask(AF_INET6, cp->af);
+	if (tun_type == IP_VS_CONN_F_TUNNEL_TYPE_GUE)
+		gso_type |= SKB_GSO_UDP_TUNNEL;
+
+	if (iptunnel_handle_offloads(skb, gso_type))
 		goto tx_error;
 
 	skb->transport_header = skb->network_header;
 
+	skb_set_inner_ipproto(skb, next_protocol);
+
+	if (tun_type == IP_VS_CONN_F_TUNNEL_TYPE_GUE)
+		ipvs_gue_encap(net, skb, cp, &next_protocol);
+
 	skb_push(skb, sizeof(struct ipv6hdr));
 	skb_reset_network_header(skb);
 	memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
@@ -1167,7 +1243,7 @@ ip_vs_tunnel_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
 
 	ret = ip_vs_tunnel_xmit_prepare(skb, cp);
 	if (ret == NF_ACCEPT)
-		ip6_local_out(cp->ipvs->net, skb->sk, skb);
+		ip6_local_out(net, skb->sk, skb);
 	else if (ret == NF_DROP)
 		kfree_skb(skb);
 
diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c
index 334d6e5b7762..59c18804a10a 100644
--- a/net/netfilter/nf_conntrack_expect.c
+++ b/net/netfilter/nf_conntrack_expect.c
@@ -336,7 +336,7 @@ void nf_ct_expect_init(struct nf_conntrack_expect *exp, unsigned int class,
 
 	exp->tuple.dst.u.all = *dst;
 
-#ifdef CONFIG_NF_NAT_NEEDED
+#if IS_ENABLED(CONFIG_NF_NAT)
 	memset(&exp->saved_addr, 0, sizeof(exp->saved_addr));
 	memset(&exp->saved_proto, 0, sizeof(exp->saved_proto));
 #endif
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index 66c596d287a5..32fe3060375a 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -45,7 +45,7 @@
 #include <net/netfilter/nf_conntrack_timestamp.h>
 #include <net/netfilter/nf_conntrack_labels.h>
 #include <net/netfilter/nf_conntrack_synproxy.h>
-#ifdef CONFIG_NF_NAT_NEEDED
+#if IS_ENABLED(CONFIG_NF_NAT)
 #include <net/netfilter/nf_nat.h>
 #include <net/netfilter/nf_nat_helper.h>
 #endif
@@ -655,7 +655,7 @@ static size_t ctnetlink_nlmsg_size(const struct nf_conn *ct)
 	       + nla_total_size(0) /* CTA_HELP */
 	       + nla_total_size(NF_CT_HELPER_NAME_LEN) /* CTA_HELP_NAME */
 	       + ctnetlink_secctx_size(ct)
-#ifdef CONFIG_NF_NAT_NEEDED
+#if IS_ENABLED(CONFIG_NF_NAT)
 	       + 2 * nla_total_size(0) /* CTA_NAT_SEQ_ADJ_ORIG|REPL */
 	       + 6 * nla_total_size(sizeof(u_int32_t)) /* CTA_NAT_SEQ_OFFSET */
 #endif
@@ -1494,7 +1494,7 @@ static int ctnetlink_get_ct_unconfirmed(struct net *net, struct sock *ctnl,
 	return -EOPNOTSUPP;
 }
 
-#ifdef CONFIG_NF_NAT_NEEDED
+#if IS_ENABLED(CONFIG_NF_NAT)
 static int
 ctnetlink_parse_nat_setup(struct nf_conn *ct,
 			  enum nf_nat_manip_type manip,
@@ -1586,7 +1586,7 @@ ctnetlink_change_status(struct nf_conn *ct, const struct nlattr * const cda[])
 static int
 ctnetlink_setup_nat(struct nf_conn *ct, const struct nlattr * const cda[])
 {
-#ifdef CONFIG_NF_NAT_NEEDED
+#if IS_ENABLED(CONFIG_NF_NAT)
 	int ret;
 
 	if (!cda[CTA_NAT_DST] && !cda[CTA_NAT_SRC])
@@ -2369,7 +2369,7 @@ ctnetlink_glue_build_size(const struct nf_conn *ct)
 	       + nla_total_size(0) /* CTA_HELP */
 	       + nla_total_size(NF_CT_HELPER_NAME_LEN) /* CTA_HELP_NAME */
 	       + ctnetlink_secctx_size(ct)
-#ifdef CONFIG_NF_NAT_NEEDED
+#if IS_ENABLED(CONFIG_NF_NAT)
 	       + 2 * nla_total_size(0) /* CTA_NAT_SEQ_ADJ_ORIG|REPL */
 	       + 6 * nla_total_size(sizeof(u_int32_t)) /* CTA_NAT_SEQ_OFFSET */
 #endif
@@ -2699,7 +2699,7 @@ ctnetlink_exp_dump_expect(struct sk_buff *skb,
 	struct nf_conn *master = exp->master;
 	long timeout = ((long)exp->timeout.expires - (long)jiffies) / HZ;
 	struct nf_conn_help *help;
-#ifdef CONFIG_NF_NAT_NEEDED
+#if IS_ENABLED(CONFIG_NF_NAT)
 	struct nlattr *nest_parms;
 	struct nf_conntrack_tuple nat_tuple = {};
 #endif
@@ -2717,7 +2717,7 @@ ctnetlink_exp_dump_expect(struct sk_buff *skb,
 				 CTA_EXPECT_MASTER) < 0)
 		goto nla_put_failure;
 
-#ifdef CONFIG_NF_NAT_NEEDED
+#if IS_ENABLED(CONFIG_NF_NAT)
 	if (!nf_inet_addr_cmp(&exp->saved_addr, &any_addr) ||
 	    exp->saved_proto.all) {
 		nest_parms = nla_nest_start(skb, CTA_EXPECT_NAT | NLA_F_NESTED);
@@ -3180,7 +3180,7 @@ ctnetlink_parse_expect_nat(const struct nlattr *attr,
 			   struct nf_conntrack_expect *exp,
 			   u_int8_t u3)
 {
-#ifdef CONFIG_NF_NAT_NEEDED
+#if IS_ENABLED(CONFIG_NF_NAT)
 	struct nlattr *tb[CTA_EXPECT_NAT_MAX+1];
 	struct nf_conntrack_tuple nat_tuple = {};
 	int err;
diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c
index 39fcc1ed18f3..d5454d1031a3 100644
--- a/net/netfilter/nf_conntrack_sip.c
+++ b/net/netfilter/nf_conntrack_sip.c
@@ -928,7 +928,7 @@ static int set_expected_rtp_rtcp(struct sk_buff *skb, unsigned int protoff,
 		    nfct_help(exp->master)->helper != nfct_help(ct)->helper ||
 		    exp->class != class)
 			break;
-#ifdef CONFIG_NF_NAT_NEEDED
+#if IS_ENABLED(CONFIG_NF_NAT)
 		if (!direct_rtp &&
 		    (!nf_inet_addr_cmp(&exp->saved_addr, &exp->tuple.dst.u3) ||
 		     exp->saved_proto.udp.port != exp->tuple.dst.u.udp.port) &&
diff --git a/net/netfilter/nf_flow_table_ip.c b/net/netfilter/nf_flow_table_ip.c
index 1d291a51cd45..6452550d187f 100644
--- a/net/netfilter/nf_flow_table_ip.c
+++ b/net/netfilter/nf_flow_table_ip.c
@@ -235,13 +235,10 @@ nf_flow_offload_ip_hook(void *priv, struct sk_buff *skb,
 	if (tuplehash == NULL)
 		return NF_ACCEPT;
 
-	outdev = dev_get_by_index_rcu(state->net, tuplehash->tuple.oifidx);
-	if (!outdev)
-		return NF_ACCEPT;
-
 	dir = tuplehash->tuple.dir;
 	flow = container_of(tuplehash, struct flow_offload, tuplehash[dir]);
 	rt = (struct rtable *)flow->tuplehash[dir].tuple.dst_cache;
+	outdev = rt->dst.dev;
 
 	if (unlikely(nf_flow_exceeds_mtu(skb, flow->tuplehash[dir].tuple.mtu)) &&
 	    (ip_hdr(skb)->frag_off & htons(IP_DF)) != 0)
@@ -452,13 +449,10 @@ nf_flow_offload_ipv6_hook(void *priv, struct sk_buff *skb,
 	if (tuplehash == NULL)
 		return NF_ACCEPT;
 
-	outdev = dev_get_by_index_rcu(state->net, tuplehash->tuple.oifidx);
-	if (!outdev)
-		return NF_ACCEPT;
-
 	dir = tuplehash->tuple.dir;
 	flow = container_of(tuplehash, struct flow_offload, tuplehash[dir]);
 	rt = (struct rt6_info *)flow->tuplehash[dir].tuple.dst_cache;
+	outdev = rt->dst.dev;
 
 	if (unlikely(nf_flow_exceeds_mtu(skb, flow->tuplehash[dir].tuple.mtu)))
 		return NF_ACCEPT;
diff --git a/net/netfilter/nf_internals.h b/net/netfilter/nf_internals.h
index e15779fd58e3..d6c43902ebd7 100644
--- a/net/netfilter/nf_internals.h
+++ b/net/netfilter/nf_internals.h
@@ -7,9 +7,6 @@
 #include <linux/netdevice.h>
 
 /* nf_queue.c */
-int nf_queue(struct sk_buff *skb, struct nf_hook_state *state,
-	     const struct nf_hook_entries *entries, unsigned int index,
-	     unsigned int verdict);
 void nf_queue_nf_hook_drop(struct net *net);
 
 /* nf_log.c */
diff --git a/net/netfilter/nf_nat_core.c b/net/netfilter/nf_nat_core.c
index af7dc6537758..a9ec49edd7f4 100644
--- a/net/netfilter/nf_nat_core.c
+++ b/net/netfilter/nf_nat_core.c
@@ -1009,7 +1009,7 @@ static struct nf_ct_helper_expectfn follow_master_nat = {
 	.expectfn	= nf_nat_follow_master,
 };
 
-int nf_nat_register_fn(struct net *net, const struct nf_hook_ops *ops,
+int nf_nat_register_fn(struct net *net, u8 pf, const struct nf_hook_ops *ops,
 		       const struct nf_hook_ops *orig_nat_ops, unsigned int ops_count)
 {
 	struct nat_net *nat_net = net_generic(net, nat_net_id);
@@ -1019,14 +1019,12 @@ int nf_nat_register_fn(struct net *net, const struct nf_hook_ops *ops,
 	struct nf_hook_ops *nat_ops;
 	int i, ret;
 
-	if (WARN_ON_ONCE(ops->pf >= ARRAY_SIZE(nat_net->nat_proto_net)))
+	if (WARN_ON_ONCE(pf >= ARRAY_SIZE(nat_net->nat_proto_net)))
 		return -EINVAL;
 
-	nat_proto_net = &nat_net->nat_proto_net[ops->pf];
+	nat_proto_net = &nat_net->nat_proto_net[pf];
 
 	for (i = 0; i < ops_count; i++) {
-		if (WARN_ON(orig_nat_ops[i].pf != ops->pf))
-			return -EINVAL;
 		if (orig_nat_ops[i].hooknum == hooknum) {
 			hooknum = i;
 			break;
@@ -1086,8 +1084,8 @@ int nf_nat_register_fn(struct net *net, const struct nf_hook_ops *ops,
 	return ret;
 }
 
-void nf_nat_unregister_fn(struct net *net, const struct nf_hook_ops *ops,
-		          unsigned int ops_count)
+void nf_nat_unregister_fn(struct net *net, u8 pf, const struct nf_hook_ops *ops,
+			  unsigned int ops_count)
 {
 	struct nat_net *nat_net = net_generic(net, nat_net_id);
 	struct nf_nat_hooks_net *nat_proto_net;
@@ -1096,10 +1094,10 @@ void nf_nat_unregister_fn(struct net *net, const struct nf_hook_ops *ops,
 	int hooknum = ops->hooknum;
 	int i;
 
-	if (ops->pf >= ARRAY_SIZE(nat_net->nat_proto_net))
+	if (pf >= ARRAY_SIZE(nat_net->nat_proto_net))
 		return;
 
-	nat_proto_net = &nat_net->nat_proto_net[ops->pf];
+	nat_proto_net = &nat_net->nat_proto_net[pf];
 
 	mutex_lock(&nf_nat_proto_mutex);
 	if (WARN_ON(nat_proto_net->users == 0))
diff --git a/net/netfilter/nf_nat_masquerade.c b/net/netfilter/nf_nat_masquerade.c
index d85c4d902e7b..8e8a65d46345 100644
--- a/net/netfilter/nf_nat_masquerade.c
+++ b/net/netfilter/nf_nat_masquerade.c
@@ -7,12 +7,10 @@
 #include <linux/netfilter_ipv4.h>
 #include <linux/netfilter_ipv6.h>
 
-#include <net/netfilter/ipv4/nf_nat_masquerade.h>
-#include <net/netfilter/ipv6/nf_nat_masquerade.h>
+#include <net/netfilter/nf_nat_masquerade.h>
 
 static DEFINE_MUTEX(masq_mutex);
-static unsigned int masq_refcnt4 __read_mostly;
-static unsigned int masq_refcnt6 __read_mostly;
+static unsigned int masq_refcnt __read_mostly;
 
 unsigned int
 nf_nat_masquerade_ipv4(struct sk_buff *skb, unsigned int hooknum,
@@ -137,56 +135,6 @@ static struct notifier_block masq_inet_notifier = {
 	.notifier_call	= masq_inet_event,
 };
 
-int nf_nat_masquerade_ipv4_register_notifier(void)
-{
-	int ret = 0;
-
-	mutex_lock(&masq_mutex);
-	if (WARN_ON_ONCE(masq_refcnt4 == UINT_MAX)) {
-		ret = -EOVERFLOW;
-		goto out_unlock;
-	}
-
-	/* check if the notifier was already set */
-	if (++masq_refcnt4 > 1)
-		goto out_unlock;
-
-	/* Register for device down reports */
-	ret = register_netdevice_notifier(&masq_dev_notifier);
-	if (ret)
-		goto err_dec;
-	/* Register IP address change reports */
-	ret = register_inetaddr_notifier(&masq_inet_notifier);
-	if (ret)
-		goto err_unregister;
-
-	mutex_unlock(&masq_mutex);
-	return ret;
-
-err_unregister:
-	unregister_netdevice_notifier(&masq_dev_notifier);
-err_dec:
-	masq_refcnt4--;
-out_unlock:
-	mutex_unlock(&masq_mutex);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(nf_nat_masquerade_ipv4_register_notifier);
-
-void nf_nat_masquerade_ipv4_unregister_notifier(void)
-{
-	mutex_lock(&masq_mutex);
-	/* check if the notifier still has clients */
-	if (--masq_refcnt4 > 0)
-		goto out_unlock;
-
-	unregister_netdevice_notifier(&masq_dev_notifier);
-	unregister_inetaddr_notifier(&masq_inet_notifier);
-out_unlock:
-	mutex_unlock(&masq_mutex);
-}
-EXPORT_SYMBOL_GPL(nf_nat_masquerade_ipv4_unregister_notifier);
-
 #if IS_ENABLED(CONFIG_IPV6)
 static atomic_t v6_worker_count __read_mostly;
 
@@ -322,44 +270,68 @@ static struct notifier_block masq_inet6_notifier = {
 	.notifier_call	= masq_inet6_event,
 };
 
-int nf_nat_masquerade_ipv6_register_notifier(void)
+static int nf_nat_masquerade_ipv6_register_notifier(void)
+{
+	return register_inet6addr_notifier(&masq_inet6_notifier);
+}
+#else
+static inline int nf_nat_masquerade_ipv6_register_notifier(void) { return 0; }
+#endif
+
+int nf_nat_masquerade_inet_register_notifiers(void)
 {
 	int ret = 0;
 
 	mutex_lock(&masq_mutex);
-	if (WARN_ON_ONCE(masq_refcnt6 == UINT_MAX)) {
+	if (WARN_ON_ONCE(masq_refcnt == UINT_MAX)) {
 		ret = -EOVERFLOW;
 		goto out_unlock;
 	}
 
-	/* check if the notifier is already set */
-	if (++masq_refcnt6 > 1)
+	/* check if the notifier was already set */
+	if (++masq_refcnt > 1)
 		goto out_unlock;
 
-	ret = register_inet6addr_notifier(&masq_inet6_notifier);
+	/* Register for device down reports */
+	ret = register_netdevice_notifier(&masq_dev_notifier);
 	if (ret)
 		goto err_dec;
+	/* Register IP address change reports */
+	ret = register_inetaddr_notifier(&masq_inet_notifier);
+	if (ret)
+		goto err_unregister;
+
+	ret = nf_nat_masquerade_ipv6_register_notifier();
+	if (ret)
+		goto err_unreg_inet;
 
 	mutex_unlock(&masq_mutex);
 	return ret;
+err_unreg_inet:
+	unregister_inetaddr_notifier(&masq_inet_notifier);
+err_unregister:
+	unregister_netdevice_notifier(&masq_dev_notifier);
 err_dec:
-	masq_refcnt6--;
+	masq_refcnt--;
 out_unlock:
 	mutex_unlock(&masq_mutex);
 	return ret;
 }
-EXPORT_SYMBOL_GPL(nf_nat_masquerade_ipv6_register_notifier);
+EXPORT_SYMBOL_GPL(nf_nat_masquerade_inet_register_notifiers);
 
-void nf_nat_masquerade_ipv6_unregister_notifier(void)
+void nf_nat_masquerade_inet_unregister_notifiers(void)
 {
 	mutex_lock(&masq_mutex);
-	/* check if the notifier still has clients */
-	if (--masq_refcnt6 > 0)
+	/* check if the notifiers still have clients */
+	if (--masq_refcnt > 0)
 		goto out_unlock;
 
+	unregister_netdevice_notifier(&masq_dev_notifier);
+	unregister_inetaddr_notifier(&masq_inet_notifier);
+#if IS_ENABLED(CONFIG_IPV6)
 	unregister_inet6addr_notifier(&masq_inet6_notifier);
+#endif
 out_unlock:
 	mutex_unlock(&masq_mutex);
 }
-EXPORT_SYMBOL_GPL(nf_nat_masquerade_ipv6_unregister_notifier);
-#endif
+EXPORT_SYMBOL_GPL(nf_nat_masquerade_inet_unregister_notifiers);
diff --git a/net/netfilter/nf_nat_proto.c b/net/netfilter/nf_nat_proto.c
index 62743da3004f..84f5c90a7f21 100644
--- a/net/netfilter/nf_nat_proto.c
+++ b/net/netfilter/nf_nat_proto.c
@@ -725,7 +725,7 @@ nf_nat_ipv4_local_fn(void *priv, struct sk_buff *skb,
 	return ret;
 }
 
-static const struct nf_hook_ops nf_nat_ipv4_ops[] = {
+const struct nf_hook_ops nf_nat_ipv4_ops[] = {
 	/* Before packet filtering, change destination */
 	{
 		.hook		= nf_nat_ipv4_in,
@@ -758,13 +758,14 @@ static const struct nf_hook_ops nf_nat_ipv4_ops[] = {
 
 int nf_nat_ipv4_register_fn(struct net *net, const struct nf_hook_ops *ops)
 {
-	return nf_nat_register_fn(net, ops, nf_nat_ipv4_ops, ARRAY_SIZE(nf_nat_ipv4_ops));
+	return nf_nat_register_fn(net, ops->pf, ops, nf_nat_ipv4_ops,
+				  ARRAY_SIZE(nf_nat_ipv4_ops));
 }
 EXPORT_SYMBOL_GPL(nf_nat_ipv4_register_fn);
 
 void nf_nat_ipv4_unregister_fn(struct net *net, const struct nf_hook_ops *ops)
 {
-	nf_nat_unregister_fn(net, ops, ARRAY_SIZE(nf_nat_ipv4_ops));
+	nf_nat_unregister_fn(net, ops->pf, ops, ARRAY_SIZE(nf_nat_ipv4_ops));
 }
 EXPORT_SYMBOL_GPL(nf_nat_ipv4_unregister_fn);
 
@@ -925,20 +926,6 @@ nf_nat_ipv6_out(void *priv, struct sk_buff *skb,
 	return ret;
 }
 
-static int nat_route_me_harder(struct net *net, struct sk_buff *skb)
-{
-#ifdef CONFIG_IPV6_MODULE
-	const struct nf_ipv6_ops *v6_ops = nf_get_ipv6_ops();
-
-	if (!v6_ops)
-		return -EHOSTUNREACH;
-
-	return v6_ops->route_me_harder(net, skb);
-#else
-	return ip6_route_me_harder(net, skb);
-#endif
-}
-
 static unsigned int
 nf_nat_ipv6_local_fn(void *priv, struct sk_buff *skb,
 		     const struct nf_hook_state *state)
@@ -958,7 +945,7 @@ nf_nat_ipv6_local_fn(void *priv, struct sk_buff *skb,
 
 		if (!nf_inet_addr_cmp(&ct->tuplehash[dir].tuple.dst.u3,
 				      &ct->tuplehash[!dir].tuple.src.u3)) {
-			err = nat_route_me_harder(state->net, skb);
+			err = nf_ip6_route_me_harder(state->net, skb);
 			if (err < 0)
 				ret = NF_DROP_ERR(err);
 		}
@@ -977,7 +964,7 @@ nf_nat_ipv6_local_fn(void *priv, struct sk_buff *skb,
 	return ret;
 }
 
-static const struct nf_hook_ops nf_nat_ipv6_ops[] = {
+const struct nf_hook_ops nf_nat_ipv6_ops[] = {
 	/* Before packet filtering, change destination */
 	{
 		.hook		= nf_nat_ipv6_in,
@@ -1010,14 +997,44 @@ static const struct nf_hook_ops nf_nat_ipv6_ops[] = {
 
 int nf_nat_ipv6_register_fn(struct net *net, const struct nf_hook_ops *ops)
 {
-	return nf_nat_register_fn(net, ops, nf_nat_ipv6_ops,
+	return nf_nat_register_fn(net, ops->pf, ops, nf_nat_ipv6_ops,
 				  ARRAY_SIZE(nf_nat_ipv6_ops));
 }
 EXPORT_SYMBOL_GPL(nf_nat_ipv6_register_fn);
 
 void nf_nat_ipv6_unregister_fn(struct net *net, const struct nf_hook_ops *ops)
 {
-	nf_nat_unregister_fn(net, ops, ARRAY_SIZE(nf_nat_ipv6_ops));
+	nf_nat_unregister_fn(net, ops->pf, ops, ARRAY_SIZE(nf_nat_ipv6_ops));
 }
 EXPORT_SYMBOL_GPL(nf_nat_ipv6_unregister_fn);
 #endif /* CONFIG_IPV6 */
+
+#if defined(CONFIG_NF_TABLES_INET) && IS_ENABLED(CONFIG_NFT_NAT)
+int nf_nat_inet_register_fn(struct net *net, const struct nf_hook_ops *ops)
+{
+	int ret;
+
+	if (WARN_ON_ONCE(ops->pf != NFPROTO_INET))
+		return -EINVAL;
+
+	ret = nf_nat_register_fn(net, NFPROTO_IPV6, ops, nf_nat_ipv6_ops,
+				 ARRAY_SIZE(nf_nat_ipv6_ops));
+	if (ret)
+		return ret;
+
+	ret = nf_nat_register_fn(net, NFPROTO_IPV4, ops, nf_nat_ipv4_ops,
+				 ARRAY_SIZE(nf_nat_ipv4_ops));
+	if (ret)
+		nf_nat_ipv6_unregister_fn(net, ops);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(nf_nat_inet_register_fn);
+
+void nf_nat_inet_unregister_fn(struct net *net, const struct nf_hook_ops *ops)
+{
+	nf_nat_unregister_fn(net, NFPROTO_IPV4, ops, ARRAY_SIZE(nf_nat_ipv4_ops));
+	nf_nat_unregister_fn(net, NFPROTO_IPV6, ops, ARRAY_SIZE(nf_nat_ipv6_ops));
+}
+EXPORT_SYMBOL_GPL(nf_nat_inet_unregister_fn);
+#endif /* NFT INET NAT */
diff --git a/net/netfilter/nf_queue.c b/net/netfilter/nf_queue.c
index a36a77bae1d6..9dc1d6e04946 100644
--- a/net/netfilter/nf_queue.c
+++ b/net/netfilter/nf_queue.c
@@ -240,6 +240,7 @@ int nf_queue(struct sk_buff *skb, struct nf_hook_state *state,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(nf_queue);
 
 static unsigned int nf_iterate(struct sk_buff *skb,
 			       struct nf_hook_state *state,
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 90e6b09ef2af..e058273c5dde 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -3193,9 +3193,7 @@ static int nf_msecs_to_jiffies64(const struct nlattr *nla, u64 *result)
 
 static __be64 nf_jiffies64_to_msecs(u64 input)
 {
-	u64 ms = jiffies64_to_nsecs(input);
-
-	return cpu_to_be64(div_u64(ms, NSEC_PER_MSEC));
+	return cpu_to_be64(jiffies64_to_msecs(input));
 }
 
 static int nf_tables_fill_set(struct sk_buff *skb, const struct nft_ctx *ctx,
@@ -3438,8 +3436,7 @@ err:
 	return err;
 }
 
-static int nf_tables_set_desc_parse(const struct nft_ctx *ctx,
-				    struct nft_set_desc *desc,
+static int nf_tables_set_desc_parse(struct nft_set_desc *desc,
 				    const struct nlattr *nla)
 {
 	struct nlattr *da[NFTA_SET_DESC_MAX + 1];
@@ -3565,7 +3562,7 @@ static int nf_tables_newset(struct net *net, struct sock *nlsk,
 		policy = ntohl(nla_get_be32(nla[NFTA_SET_POLICY]));
 
 	if (nla[NFTA_SET_DESC] != NULL) {
-		err = nf_tables_set_desc_parse(&ctx, &desc, nla[NFTA_SET_DESC]);
+		err = nf_tables_set_desc_parse(&desc, nla[NFTA_SET_DESC]);
 		if (err < 0)
 			return err;
 	}
@@ -3785,8 +3782,8 @@ bind:
 }
 EXPORT_SYMBOL_GPL(nf_tables_bind_set);
 
-void nf_tables_unbind_set(const struct nft_ctx *ctx, struct nft_set *set,
-			  struct nft_set_binding *binding, bool event)
+static void nf_tables_unbind_set(const struct nft_ctx *ctx, struct nft_set *set,
+				 struct nft_set_binding *binding, bool event)
 {
 	list_del_rcu(&binding->list);
 
@@ -3797,7 +3794,6 @@ void nf_tables_unbind_set(const struct nft_ctx *ctx, struct nft_set *set,
 					     GFP_KERNEL);
 	}
 }
-EXPORT_SYMBOL_GPL(nf_tables_unbind_set);
 
 void nf_tables_deactivate_set(const struct nft_ctx *ctx, struct nft_set *set,
 			      struct nft_set_binding *binding,
@@ -7533,6 +7529,7 @@ static int __init nf_tables_module_init(void)
 	if (err < 0)
 		goto err5;
 
+	nft_chain_route_init();
 	return err;
 err5:
 	rhltable_destroy(&nft_objname_ht);
@@ -7552,6 +7549,7 @@ static void __exit nf_tables_module_exit(void)
 	nfnetlink_subsys_unregister(&nf_tables_subsys);
 	unregister_netdevice_notifier(&nf_tables_flowtable_notifier);
 	nft_chain_filter_fini();
+	nft_chain_route_fini();
 	unregister_pernet_subsys(&nf_tables_net_ops);
 	cancel_work_sync(&trans_destroy_work);
 	rcu_barrier();
diff --git a/net/netfilter/nfnetlink_osf.c b/net/netfilter/nfnetlink_osf.c
index 1f1d90c1716b..7b827bcb412c 100644
--- a/net/netfilter/nfnetlink_osf.c
+++ b/net/netfilter/nfnetlink_osf.c
@@ -255,9 +255,9 @@ nf_osf_match(const struct sk_buff *skb, u_int8_t family,
 }
 EXPORT_SYMBOL_GPL(nf_osf_match);
 
-const char *nf_osf_find(const struct sk_buff *skb,
-			const struct list_head *nf_osf_fingers,
-			const int ttl_check)
+bool nf_osf_find(const struct sk_buff *skb,
+		 const struct list_head *nf_osf_fingers,
+		 const int ttl_check, struct nf_osf_data *data)
 {
 	const struct iphdr *ip = ip_hdr(skb);
 	const struct nf_osf_user_finger *f;
@@ -265,24 +265,24 @@ const char *nf_osf_find(const struct sk_buff *skb,
 	const struct nf_osf_finger *kf;
 	struct nf_osf_hdr_ctx ctx;
 	const struct tcphdr *tcp;
-	const char *genre = NULL;
 
 	memset(&ctx, 0, sizeof(ctx));
 
 	tcp = nf_osf_hdr_ctx_init(&ctx, skb, ip, opts);
 	if (!tcp)
-		return NULL;
+		return false;
 
 	list_for_each_entry_rcu(kf, &nf_osf_fingers[ctx.df], finger_entry) {
 		f = &kf->finger;
 		if (!nf_osf_match_one(skb, f, ttl_check, &ctx))
 			continue;
 
-		genre = f->genre;
+		data->genre = f->genre;
+		data->version = f->version;
 		break;
 	}
 
-	return genre;
+	return true;
 }
 EXPORT_SYMBOL_GPL(nf_osf_find);
 
diff --git a/net/netfilter/nft_chain_nat.c b/net/netfilter/nft_chain_nat.c
index ee4852088d50..2f89bde3c61c 100644
--- a/net/netfilter/nft_chain_nat.c
+++ b/net/netfilter/nft_chain_nat.c
@@ -74,6 +74,36 @@ static const struct nft_chain_type nft_chain_nat_ipv6 = {
 };
 #endif
 
+#ifdef CONFIG_NF_TABLES_INET
+static int nft_nat_inet_reg(struct net *net, const struct nf_hook_ops *ops)
+{
+	return nf_nat_inet_register_fn(net, ops);
+}
+
+static void nft_nat_inet_unreg(struct net *net, const struct nf_hook_ops *ops)
+{
+	nf_nat_inet_unregister_fn(net, ops);
+}
+
+static const struct nft_chain_type nft_chain_nat_inet = {
+	.name		= "nat",
+	.type		= NFT_CHAIN_T_NAT,
+	.family		= NFPROTO_INET,
+	.hook_mask	= (1 << NF_INET_PRE_ROUTING) |
+			  (1 << NF_INET_LOCAL_IN) |
+			  (1 << NF_INET_LOCAL_OUT) |
+			  (1 << NF_INET_POST_ROUTING),
+	.hooks		= {
+		[NF_INET_PRE_ROUTING]	= nft_nat_do_chain,
+		[NF_INET_LOCAL_IN]	= nft_nat_do_chain,
+		[NF_INET_LOCAL_OUT]	= nft_nat_do_chain,
+		[NF_INET_POST_ROUTING]	= nft_nat_do_chain,
+	},
+	.ops_register		= nft_nat_inet_reg,
+	.ops_unregister		= nft_nat_inet_unreg,
+};
+#endif
+
 static int __init nft_chain_nat_init(void)
 {
 #ifdef CONFIG_NF_TABLES_IPV6
@@ -82,6 +112,9 @@ static int __init nft_chain_nat_init(void)
 #ifdef CONFIG_NF_TABLES_IPV4
 	nft_register_chain_type(&nft_chain_nat_ipv4);
 #endif
+#ifdef CONFIG_NF_TABLES_INET
+	nft_register_chain_type(&nft_chain_nat_inet);
+#endif
 
 	return 0;
 }
@@ -94,6 +127,9 @@ static void __exit nft_chain_nat_exit(void)
 #ifdef CONFIG_NF_TABLES_IPV6
 	nft_unregister_chain_type(&nft_chain_nat_ipv6);
 #endif
+#ifdef CONFIG_NF_TABLES_INET
+	nft_unregister_chain_type(&nft_chain_nat_inet);
+#endif
 }
 
 module_init(nft_chain_nat_init);
diff --git a/net/netfilter/nft_chain_route.c b/net/netfilter/nft_chain_route.c
new file mode 100644
index 000000000000..8826bbe71136
--- /dev/null
+++ b/net/netfilter/nft_chain_route.c
@@ -0,0 +1,169 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/skbuff.h>
+#include <linux/netfilter.h>
+#include <linux/netfilter_ipv4.h>
+#include <linux/netfilter_ipv6.h>
+#include <linux/netfilter/nfnetlink.h>
+#include <linux/netfilter/nf_tables.h>
+#include <net/netfilter/nf_tables.h>
+#include <net/netfilter/nf_tables_ipv4.h>
+#include <net/netfilter/nf_tables_ipv6.h>
+#include <net/route.h>
+#include <net/ip.h>
+
+#ifdef CONFIG_NF_TABLES_IPV4
+static unsigned int nf_route_table_hook4(void *priv,
+					 struct sk_buff *skb,
+					 const struct nf_hook_state *state)
+{
+	const struct iphdr *iph;
+	struct nft_pktinfo pkt;
+	__be32 saddr, daddr;
+	unsigned int ret;
+	u32 mark;
+	int err;
+	u8 tos;
+
+	nft_set_pktinfo(&pkt, skb, state);
+	nft_set_pktinfo_ipv4(&pkt, skb);
+
+	mark = skb->mark;
+	iph = ip_hdr(skb);
+	saddr = iph->saddr;
+	daddr = iph->daddr;
+	tos = iph->tos;
+
+	ret = nft_do_chain(&pkt, priv);
+	if (ret == NF_ACCEPT) {
+		iph = ip_hdr(skb);
+
+		if (iph->saddr != saddr ||
+		    iph->daddr != daddr ||
+		    skb->mark != mark ||
+		    iph->tos != tos) {
+			err = ip_route_me_harder(state->net, skb, RTN_UNSPEC);
+			if (err < 0)
+				ret = NF_DROP_ERR(err);
+		}
+	}
+	return ret;
+}
+
+static const struct nft_chain_type nft_chain_route_ipv4 = {
+	.name		= "route",
+	.type		= NFT_CHAIN_T_ROUTE,
+	.family		= NFPROTO_IPV4,
+	.hook_mask	= (1 << NF_INET_LOCAL_OUT),
+	.hooks		= {
+		[NF_INET_LOCAL_OUT]	= nf_route_table_hook4,
+	},
+};
+#endif
+
+#ifdef CONFIG_NF_TABLES_IPV6
+static unsigned int nf_route_table_hook6(void *priv,
+					 struct sk_buff *skb,
+					 const struct nf_hook_state *state)
+{
+	struct in6_addr saddr, daddr;
+	struct nft_pktinfo pkt;
+	u32 mark, flowlabel;
+	unsigned int ret;
+	u8 hop_limit;
+	int err;
+
+	nft_set_pktinfo(&pkt, skb, state);
+	nft_set_pktinfo_ipv6(&pkt, skb);
+
+	/* save source/dest address, mark, hoplimit, flowlabel, priority */
+	memcpy(&saddr, &ipv6_hdr(skb)->saddr, sizeof(saddr));
+	memcpy(&daddr, &ipv6_hdr(skb)->daddr, sizeof(daddr));
+	mark = skb->mark;
+	hop_limit = ipv6_hdr(skb)->hop_limit;
+
+	/* flowlabel and prio (includes version, which shouldn't change either)*/
+	flowlabel = *((u32 *)ipv6_hdr(skb));
+
+	ret = nft_do_chain(&pkt, priv);
+	if (ret == NF_ACCEPT &&
+	    (memcmp(&ipv6_hdr(skb)->saddr, &saddr, sizeof(saddr)) ||
+	     memcmp(&ipv6_hdr(skb)->daddr, &daddr, sizeof(daddr)) ||
+	     skb->mark != mark ||
+	     ipv6_hdr(skb)->hop_limit != hop_limit ||
+	     flowlabel != *((u32 *)ipv6_hdr(skb)))) {
+		err = nf_ip6_route_me_harder(state->net, skb);
+		if (err < 0)
+			ret = NF_DROP_ERR(err);
+	}
+
+	return ret;
+}
+
+static const struct nft_chain_type nft_chain_route_ipv6 = {
+	.name		= "route",
+	.type		= NFT_CHAIN_T_ROUTE,
+	.family		= NFPROTO_IPV6,
+	.hook_mask	= (1 << NF_INET_LOCAL_OUT),
+	.hooks		= {
+		[NF_INET_LOCAL_OUT]	= nf_route_table_hook6,
+	},
+};
+#endif
+
+#ifdef CONFIG_NF_TABLES_INET
+static unsigned int nf_route_table_inet(void *priv,
+					struct sk_buff *skb,
+					const struct nf_hook_state *state)
+{
+	struct nft_pktinfo pkt;
+
+	switch (state->pf) {
+	case NFPROTO_IPV4:
+		return nf_route_table_hook4(priv, skb, state);
+	case NFPROTO_IPV6:
+		return nf_route_table_hook6(priv, skb, state);
+	default:
+		nft_set_pktinfo(&pkt, skb, state);
+		break;
+	}
+
+	return nft_do_chain(&pkt, priv);
+}
+
+static const struct nft_chain_type nft_chain_route_inet = {
+	.name		= "route",
+	.type		= NFT_CHAIN_T_ROUTE,
+	.family		= NFPROTO_INET,
+	.hook_mask	= (1 << NF_INET_LOCAL_OUT),
+	.hooks		= {
+		[NF_INET_LOCAL_OUT]	= nf_route_table_inet,
+	},
+};
+#endif
+
+void __init nft_chain_route_init(void)
+{
+#ifdef CONFIG_NF_TABLES_IPV6
+	nft_register_chain_type(&nft_chain_route_ipv6);
+#endif
+#ifdef CONFIG_NF_TABLES_IPV4
+	nft_register_chain_type(&nft_chain_route_ipv4);
+#endif
+#ifdef CONFIG_NF_TABLES_INET
+	nft_register_chain_type(&nft_chain_route_inet);
+#endif
+}
+
+void __exit nft_chain_route_fini(void)
+{
+#ifdef CONFIG_NF_TABLES_IPV6
+	nft_unregister_chain_type(&nft_chain_route_ipv6);
+#endif
+#ifdef CONFIG_NF_TABLES_IPV4
+	nft_unregister_chain_type(&nft_chain_route_ipv4);
+#endif
+#ifdef CONFIG_NF_TABLES_INET
+	nft_unregister_chain_type(&nft_chain_route_inet);
+#endif
+}
diff --git a/net/netfilter/nft_masq.c b/net/netfilter/nft_masq.c
index bee156eaa400..86fd90085eaf 100644
--- a/net/netfilter/nft_masq.c
+++ b/net/netfilter/nft_masq.c
@@ -14,8 +14,7 @@
 #include <linux/netfilter/nf_tables.h>
 #include <net/netfilter/nf_tables.h>
 #include <net/netfilter/nf_nat.h>
-#include <net/netfilter/ipv4/nf_nat_masquerade.h>
-#include <net/netfilter/ipv6/nf_nat_masquerade.h>
+#include <net/netfilter/nf_nat_masquerade.h>
 
 struct nft_masq {
 	u32			flags;
@@ -196,28 +195,73 @@ static struct nft_expr_type nft_masq_ipv6_type __read_mostly = {
 
 static int __init nft_masq_module_init_ipv6(void)
 {
-	int ret = nft_register_expr(&nft_masq_ipv6_type);
-
-	if (ret)
-		return ret;
-
-	ret = nf_nat_masquerade_ipv6_register_notifier();
-	if (ret < 0)
-		nft_unregister_expr(&nft_masq_ipv6_type);
-
-	return ret;
+	return nft_register_expr(&nft_masq_ipv6_type);
 }
 
 static void nft_masq_module_exit_ipv6(void)
 {
 	nft_unregister_expr(&nft_masq_ipv6_type);
-	nf_nat_masquerade_ipv6_unregister_notifier();
 }
 #else
 static inline int nft_masq_module_init_ipv6(void) { return 0; }
 static inline void nft_masq_module_exit_ipv6(void) {}
 #endif
 
+#ifdef CONFIG_NF_TABLES_INET
+static void nft_masq_inet_eval(const struct nft_expr *expr,
+			       struct nft_regs *regs,
+			       const struct nft_pktinfo *pkt)
+{
+	switch (nft_pf(pkt)) {
+	case NFPROTO_IPV4:
+		return nft_masq_ipv4_eval(expr, regs, pkt);
+	case NFPROTO_IPV6:
+		return nft_masq_ipv6_eval(expr, regs, pkt);
+	}
+
+	WARN_ON_ONCE(1);
+}
+
+static void
+nft_masq_inet_destroy(const struct nft_ctx *ctx, const struct nft_expr *expr)
+{
+	nf_ct_netns_put(ctx->net, NFPROTO_INET);
+}
+
+static struct nft_expr_type nft_masq_inet_type;
+static const struct nft_expr_ops nft_masq_inet_ops = {
+	.type		= &nft_masq_inet_type,
+	.size		= NFT_EXPR_SIZE(sizeof(struct nft_masq)),
+	.eval		= nft_masq_inet_eval,
+	.init		= nft_masq_init,
+	.destroy	= nft_masq_inet_destroy,
+	.dump		= nft_masq_dump,
+	.validate	= nft_masq_validate,
+};
+
+static struct nft_expr_type nft_masq_inet_type __read_mostly = {
+	.family		= NFPROTO_INET,
+	.name		= "masq",
+	.ops		= &nft_masq_inet_ops,
+	.policy		= nft_masq_policy,
+	.maxattr	= NFTA_MASQ_MAX,
+	.owner		= THIS_MODULE,
+};
+
+static int __init nft_masq_module_init_inet(void)
+{
+	return nft_register_expr(&nft_masq_inet_type);
+}
+
+static void nft_masq_module_exit_inet(void)
+{
+	nft_unregister_expr(&nft_masq_inet_type);
+}
+#else
+static inline int nft_masq_module_init_inet(void) { return 0; }
+static inline void nft_masq_module_exit_inet(void) {}
+#endif
+
 static int __init nft_masq_module_init(void)
 {
 	int ret;
@@ -226,15 +270,23 @@ static int __init nft_masq_module_init(void)
 	if (ret < 0)
 		return ret;
 
+	ret = nft_masq_module_init_inet();
+	if (ret < 0) {
+		nft_masq_module_exit_ipv6();
+		return ret;
+	}
+
 	ret = nft_register_expr(&nft_masq_ipv4_type);
 	if (ret < 0) {
+		nft_masq_module_exit_inet();
 		nft_masq_module_exit_ipv6();
 		return ret;
 	}
 
-	ret = nf_nat_masquerade_ipv4_register_notifier();
+	ret = nf_nat_masquerade_inet_register_notifiers();
 	if (ret < 0) {
 		nft_masq_module_exit_ipv6();
+		nft_masq_module_exit_inet();
 		nft_unregister_expr(&nft_masq_ipv4_type);
 		return ret;
 	}
@@ -245,8 +297,9 @@ static int __init nft_masq_module_init(void)
 static void __exit nft_masq_module_exit(void)
 {
 	nft_masq_module_exit_ipv6();
+	nft_masq_module_exit_inet();
 	nft_unregister_expr(&nft_masq_ipv4_type);
-	nf_nat_masquerade_ipv4_unregister_notifier();
+	nf_nat_masquerade_inet_unregister_notifiers();
 }
 
 module_init(nft_masq_module_init);
diff --git a/net/netfilter/nft_nat.c b/net/netfilter/nft_nat.c
index e93aed9bda88..d90d421826aa 100644
--- a/net/netfilter/nft_nat.c
+++ b/net/netfilter/nft_nat.c
@@ -140,7 +140,7 @@ static int nft_nat_init(const struct nft_ctx *ctx, const struct nft_expr *expr,
 		return -EINVAL;
 
 	family = ntohl(nla_get_be32(tb[NFTA_NAT_FAMILY]));
-	if (family != ctx->family)
+	if (ctx->family != NFPROTO_INET && ctx->family != family)
 		return -EOPNOTSUPP;
 
 	switch (family) {
@@ -278,13 +278,67 @@ static struct nft_expr_type nft_nat_type __read_mostly = {
 	.owner          = THIS_MODULE,
 };
 
+#ifdef CONFIG_NF_TABLES_INET
+static void nft_nat_inet_eval(const struct nft_expr *expr,
+			      struct nft_regs *regs,
+			      const struct nft_pktinfo *pkt)
+{
+	const struct nft_nat *priv = nft_expr_priv(expr);
+
+	if (priv->family == nft_pf(pkt))
+		nft_nat_eval(expr, regs, pkt);
+}
+
+static const struct nft_expr_ops nft_nat_inet_ops = {
+	.type           = &nft_nat_type,
+	.size           = NFT_EXPR_SIZE(sizeof(struct nft_nat)),
+	.eval           = nft_nat_inet_eval,
+	.init           = nft_nat_init,
+	.destroy        = nft_nat_destroy,
+	.dump           = nft_nat_dump,
+	.validate	= nft_nat_validate,
+};
+
+static struct nft_expr_type nft_inet_nat_type __read_mostly = {
+	.name           = "nat",
+	.family		= NFPROTO_INET,
+	.ops            = &nft_nat_inet_ops,
+	.policy         = nft_nat_policy,
+	.maxattr        = NFTA_NAT_MAX,
+	.owner          = THIS_MODULE,
+};
+
+static int nft_nat_inet_module_init(void)
+{
+	return nft_register_expr(&nft_inet_nat_type);
+}
+
+static void nft_nat_inet_module_exit(void)
+{
+	nft_unregister_expr(&nft_inet_nat_type);
+}
+#else
+static int nft_nat_inet_module_init(void) { return 0; }
+static void nft_nat_inet_module_exit(void) { }
+#endif
+
 static int __init nft_nat_module_init(void)
 {
-	return nft_register_expr(&nft_nat_type);
+	int ret = nft_nat_inet_module_init();
+
+	if (ret)
+		return ret;
+
+	ret = nft_register_expr(&nft_nat_type);
+	if (ret)
+		nft_nat_inet_module_exit();
+
+	return ret;
 }
 
 static void __exit nft_nat_module_exit(void)
 {
+	nft_nat_inet_module_exit();
 	nft_unregister_expr(&nft_nat_type);
 }
 
diff --git a/net/netfilter/nft_osf.c b/net/netfilter/nft_osf.c
index b13618c764ec..87b60d6617ef 100644
--- a/net/netfilter/nft_osf.c
+++ b/net/netfilter/nft_osf.c
@@ -7,11 +7,13 @@
 struct nft_osf {
 	enum nft_registers	dreg:8;
 	u8			ttl;
+	u32			flags;
 };
 
 static const struct nla_policy nft_osf_policy[NFTA_OSF_MAX + 1] = {
 	[NFTA_OSF_DREG]		= { .type = NLA_U32 },
 	[NFTA_OSF_TTL]		= { .type = NLA_U8 },
+	[NFTA_OSF_FLAGS]	= { .type = NLA_U32 },
 };
 
 static void nft_osf_eval(const struct nft_expr *expr, struct nft_regs *regs,
@@ -20,9 +22,10 @@ static void nft_osf_eval(const struct nft_expr *expr, struct nft_regs *regs,
 	struct nft_osf *priv = nft_expr_priv(expr);
 	u32 *dest = &regs->data[priv->dreg];
 	struct sk_buff *skb = pkt->skb;
+	char os_match[NFT_OSF_MAXGENRELEN + 1];
 	const struct tcphdr *tcp;
+	struct nf_osf_data data;
 	struct tcphdr _tcph;
-	const char *os_name;
 
 	tcp = skb_header_pointer(skb, ip_hdrlen(skb),
 				 sizeof(struct tcphdr), &_tcph);
@@ -35,11 +38,17 @@ static void nft_osf_eval(const struct nft_expr *expr, struct nft_regs *regs,
 		return;
 	}
 
-	os_name = nf_osf_find(skb, nf_osf_fingers, priv->ttl);
-	if (!os_name)
+	if (!nf_osf_find(skb, nf_osf_fingers, priv->ttl, &data)) {
 		strncpy((char *)dest, "unknown", NFT_OSF_MAXGENRELEN);
-	else
-		strncpy((char *)dest, os_name, NFT_OSF_MAXGENRELEN);
+	} else {
+		if (priv->flags & NFT_OSF_F_VERSION)
+			snprintf(os_match, NFT_OSF_MAXGENRELEN, "%s:%s",
+				 data.genre, data.version);
+		else
+			strlcpy(os_match, data.genre, NFT_OSF_MAXGENRELEN);
+
+		strncpy((char *)dest, os_match, NFT_OSF_MAXGENRELEN);
+	}
 }
 
 static int nft_osf_init(const struct nft_ctx *ctx,
@@ -47,6 +56,7 @@ static int nft_osf_init(const struct nft_ctx *ctx,
 			const struct nlattr * const tb[])
 {
 	struct nft_osf *priv = nft_expr_priv(expr);
+	u32 flags;
 	int err;
 	u8 ttl;
 
@@ -57,6 +67,13 @@ static int nft_osf_init(const struct nft_ctx *ctx,
 		priv->ttl = ttl;
 	}
 
+	if (tb[NFTA_OSF_FLAGS]) {
+		flags = ntohl(nla_get_be32(tb[NFTA_OSF_FLAGS]));
+		if (flags != NFT_OSF_F_VERSION)
+			return -EINVAL;
+		priv->flags = flags;
+	}
+
 	priv->dreg = nft_parse_register(tb[NFTA_OSF_DREG]);
 	err = nft_validate_register_store(ctx, priv->dreg, NULL,
 					  NFT_DATA_VALUE, NFT_OSF_MAXGENRELEN);
@@ -73,6 +90,9 @@ static int nft_osf_dump(struct sk_buff *skb, const struct nft_expr *expr)
 	if (nla_put_u8(skb, NFTA_OSF_TTL, priv->ttl))
 		goto nla_put_failure;
 
+	if (nla_put_be32(skb, NFTA_OSF_FLAGS, ntohl(priv->flags)))
+		goto nla_put_failure;
+
 	if (nft_dump_register(skb, NFTA_OSF_DREG, priv->dreg))
 		goto nla_put_failure;
 
diff --git a/net/netfilter/nft_redir.c b/net/netfilter/nft_redir.c
index a340cd8a751b..da74fdc4a684 100644
--- a/net/netfilter/nft_redir.c
+++ b/net/netfilter/nft_redir.c
@@ -82,7 +82,7 @@ static int nft_redir_init(const struct nft_ctx *ctx,
 	return nf_ct_netns_get(ctx->net, ctx->family);
 }
 
-int nft_redir_dump(struct sk_buff *skb, const struct nft_expr *expr)
+static int nft_redir_dump(struct sk_buff *skb, const struct nft_expr *expr)
 {
 	const struct nft_redir *priv = nft_expr_priv(expr);
 
@@ -202,6 +202,55 @@ static struct nft_expr_type nft_redir_ipv6_type __read_mostly = {
 };
 #endif
 
+#ifdef CONFIG_NF_TABLES_INET
+static void nft_redir_inet_eval(const struct nft_expr *expr,
+				struct nft_regs *regs,
+				const struct nft_pktinfo *pkt)
+{
+	switch (nft_pf(pkt)) {
+	case NFPROTO_IPV4:
+		return nft_redir_ipv4_eval(expr, regs, pkt);
+	case NFPROTO_IPV6:
+		return nft_redir_ipv6_eval(expr, regs, pkt);
+	}
+
+	WARN_ON_ONCE(1);
+}
+
+static void
+nft_redir_inet_destroy(const struct nft_ctx *ctx, const struct nft_expr *expr)
+{
+	nf_ct_netns_put(ctx->net, NFPROTO_INET);
+}
+
+static struct nft_expr_type nft_redir_inet_type;
+static const struct nft_expr_ops nft_redir_inet_ops = {
+	.type		= &nft_redir_inet_type,
+	.size		= NFT_EXPR_SIZE(sizeof(struct nft_redir)),
+	.eval		= nft_redir_inet_eval,
+	.init		= nft_redir_init,
+	.destroy	= nft_redir_inet_destroy,
+	.dump		= nft_redir_dump,
+	.validate	= nft_redir_validate,
+};
+
+static struct nft_expr_type nft_redir_inet_type __read_mostly = {
+	.family		= NFPROTO_INET,
+	.name		= "redir",
+	.ops		= &nft_redir_inet_ops,
+	.policy		= nft_redir_policy,
+	.maxattr	= NFTA_MASQ_MAX,
+	.owner		= THIS_MODULE,
+};
+
+static int __init nft_redir_module_init_inet(void)
+{
+	return nft_register_expr(&nft_redir_inet_type);
+}
+#else
+static inline int nft_redir_module_init_inet(void) { return 0; }
+#endif
+
 static int __init nft_redir_module_init(void)
 {
 	int ret = nft_register_expr(&nft_redir_ipv4_type);
@@ -217,6 +266,15 @@ static int __init nft_redir_module_init(void)
 	}
 #endif
 
+	ret = nft_redir_module_init_inet();
+	if (ret < 0) {
+		nft_unregister_expr(&nft_redir_ipv4_type);
+#ifdef CONFIG_NF_TABLES_IPV6
+		nft_unregister_expr(&nft_redir_ipv6_type);
+#endif
+		return ret;
+	}
+
 	return ret;
 }
 
@@ -226,6 +284,9 @@ static void __exit nft_redir_module_exit(void)
 #ifdef CONFIG_NF_TABLES_IPV6
 	nft_unregister_expr(&nft_redir_ipv6_type);
 #endif
+#ifdef CONFIG_NF_TABLES_INET
+	nft_unregister_expr(&nft_redir_inet_type);
+#endif
 }
 
 module_init(nft_redir_module_init);
diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
index e5e5c64df8d1..0a6656ed1534 100644
--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c
@@ -227,7 +227,7 @@ xt_request_find_match(uint8_t nfproto, const char *name, uint8_t revision)
 EXPORT_SYMBOL_GPL(xt_request_find_match);
 
 /* Find target, grabs ref.  Returns ERR_PTR() on error. */
-struct xt_target *xt_find_target(u8 af, const char *name, u8 revision)
+static struct xt_target *xt_find_target(u8 af, const char *name, u8 revision)
 {
 	struct xt_target *t;
 	int err = -ENOENT;
@@ -255,7 +255,6 @@ struct xt_target *xt_find_target(u8 af, const char *name, u8 revision)
 
 	return ERR_PTR(err);
 }
-EXPORT_SYMBOL(xt_find_target);
 
 struct xt_target *xt_request_find_target(u8 af, const char *name, u8 revision)
 {
diff --git a/net/ipv4/netfilter/ipt_MASQUERADE.c b/net/netfilter/xt_MASQUERADE.c
index fd3f9e8a74da..ece20d832adc 100644
--- a/net/ipv4/netfilter/ipt_MASQUERADE.c
+++ b/net/netfilter/xt_MASQUERADE.c
@@ -9,20 +9,10 @@
  * published by the Free Software Foundation.
  */
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-#include <linux/types.h>
-#include <linux/inetdevice.h>
-#include <linux/ip.h>
-#include <linux/timer.h>
 #include <linux/module.h>
-#include <linux/netfilter.h>
-#include <net/protocol.h>
-#include <net/ip.h>
-#include <net/checksum.h>
-#include <net/route.h>
-#include <linux/netfilter_ipv4.h>
 #include <linux/netfilter/x_tables.h>
 #include <net/netfilter/nf_nat.h>
-#include <net/netfilter/ipv4/nf_nat_masquerade.h>
+#include <net/netfilter/nf_nat_masquerade.h>
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Netfilter Core Team <coreteam@netfilter.org>");
@@ -64,38 +54,78 @@ static void masquerade_tg_destroy(const struct xt_tgdtor_param *par)
 	nf_ct_netns_put(par->net, par->family);
 }
 
-static struct xt_target masquerade_tg_reg __read_mostly = {
-	.name		= "MASQUERADE",
-	.family		= NFPROTO_IPV4,
-	.target		= masquerade_tg,
-	.targetsize	= sizeof(struct nf_nat_ipv4_multi_range_compat),
-	.table		= "nat",
-	.hooks		= 1 << NF_INET_POST_ROUTING,
-	.checkentry	= masquerade_tg_check,
-	.destroy	= masquerade_tg_destroy,
-	.me		= THIS_MODULE,
+#if IS_ENABLED(CONFIG_IPV6)
+static unsigned int
+masquerade_tg6(struct sk_buff *skb, const struct xt_action_param *par)
+{
+	return nf_nat_masquerade_ipv6(skb, par->targinfo, xt_out(par));
+}
+
+static int masquerade_tg6_checkentry(const struct xt_tgchk_param *par)
+{
+	const struct nf_nat_range2 *range = par->targinfo;
+
+	if (range->flags & NF_NAT_RANGE_MAP_IPS)
+		return -EINVAL;
+
+	return nf_ct_netns_get(par->net, par->family);
+}
+#endif
+
+static struct xt_target masquerade_tg_reg[] __read_mostly = {
+	{
+#if IS_ENABLED(CONFIG_IPV6)
+		.name		= "MASQUERADE",
+		.family		= NFPROTO_IPV6,
+		.target		= masquerade_tg6,
+		.targetsize	= sizeof(struct nf_nat_range),
+		.table		= "nat",
+		.hooks		= 1 << NF_INET_POST_ROUTING,
+		.checkentry	= masquerade_tg6_checkentry,
+		.destroy	= masquerade_tg_destroy,
+		.me		= THIS_MODULE,
+	}, {
+#endif
+		.name		= "MASQUERADE",
+		.family		= NFPROTO_IPV4,
+		.target		= masquerade_tg,
+		.targetsize	= sizeof(struct nf_nat_ipv4_multi_range_compat),
+		.table		= "nat",
+		.hooks		= 1 << NF_INET_POST_ROUTING,
+		.checkentry	= masquerade_tg_check,
+		.destroy	= masquerade_tg_destroy,
+		.me		= THIS_MODULE,
+	}
 };
 
 static int __init masquerade_tg_init(void)
 {
 	int ret;
 
-	ret = xt_register_target(&masquerade_tg_reg);
+	ret = xt_register_targets(masquerade_tg_reg,
+				  ARRAY_SIZE(masquerade_tg_reg));
 	if (ret)
 		return ret;
 
-	ret = nf_nat_masquerade_ipv4_register_notifier();
-	if (ret)
-		xt_unregister_target(&masquerade_tg_reg);
+	ret = nf_nat_masquerade_inet_register_notifiers();
+	if (ret) {
+		xt_unregister_targets(masquerade_tg_reg,
+				      ARRAY_SIZE(masquerade_tg_reg));
+		return ret;
+	}
 
 	return ret;
 }
 
 static void __exit masquerade_tg_exit(void)
 {
-	xt_unregister_target(&masquerade_tg_reg);
-	nf_nat_masquerade_ipv4_unregister_notifier();
+	xt_unregister_targets(masquerade_tg_reg, ARRAY_SIZE(masquerade_tg_reg));
+	nf_nat_masquerade_inet_unregister_notifiers();
 }
 
 module_init(masquerade_tg_init);
 module_exit(masquerade_tg_exit);
+#if IS_ENABLED(CONFIG_IPV6)
+MODULE_ALIAS("ip6t_MASQUERADE");
+#endif
+MODULE_ALIAS("ipt_MASQUERADE");
diff --git a/net/openvswitch/conntrack.c b/net/openvswitch/conntrack.c
index 0be3ab5bde26..626629944450 100644
--- a/net/openvswitch/conntrack.c
+++ b/net/openvswitch/conntrack.c
@@ -29,7 +29,7 @@
 #include <net/netfilter/ipv6/nf_defrag_ipv6.h>
 #include <net/ipv6_frag.h>
 
-#ifdef CONFIG_NF_NAT_NEEDED
+#if IS_ENABLED(CONFIG_NF_NAT)
 #include <net/netfilter/nf_nat.h>
 #endif
 
@@ -75,7 +75,7 @@ struct ovs_conntrack_info {
 	struct md_mark mark;
 	struct md_labels labels;
 	char timeout[CTNL_TIMEOUT_NAME_MAX];
-#ifdef CONFIG_NF_NAT_NEEDED
+#if IS_ENABLED(CONFIG_NF_NAT)
 	struct nf_nat_range2 range;  /* Only present for SRC NAT and DST NAT. */
 #endif
 };
@@ -721,7 +721,7 @@ static bool skb_nfct_cached(struct net *net,
 	return ct_executed;
 }
 
-#ifdef CONFIG_NF_NAT_NEEDED
+#if IS_ENABLED(CONFIG_NF_NAT)
 /* Modelled after nf_nat_ipv[46]_fn().
  * range is only used for new, uninitialized NAT state.
  * Returns either NF_ACCEPT or NF_DROP.
@@ -903,7 +903,7 @@ static int ovs_ct_nat(struct net *net, struct sw_flow_key *key,
 
 	return err;
 }
-#else /* !CONFIG_NF_NAT_NEEDED */
+#else /* !CONFIG_NF_NAT */
 static int ovs_ct_nat(struct net *net, struct sw_flow_key *key,
 		      const struct ovs_conntrack_info *info,
 		      struct sk_buff *skb, struct nf_conn *ct,
@@ -1330,7 +1330,7 @@ static int ovs_ct_add_helper(struct ovs_conntrack_info *info, const char *name,
 	return 0;
 }
 
-#ifdef CONFIG_NF_NAT_NEEDED
+#if IS_ENABLED(CONFIG_NF_NAT)
 static int parse_nat(const struct nlattr *attr,
 		     struct ovs_conntrack_info *info, bool log)
 {
@@ -1467,7 +1467,7 @@ static const struct ovs_ct_len_tbl ovs_ct_attr_lens[OVS_CT_ATTR_MAX + 1] = {
 				    .maxlen = sizeof(struct md_labels) },
 	[OVS_CT_ATTR_HELPER]	= { .minlen = 1,
 				    .maxlen = NF_CT_HELPER_NAME_LEN },
-#ifdef CONFIG_NF_NAT_NEEDED
+#if IS_ENABLED(CONFIG_NF_NAT)
 	/* NAT length is checked when parsing the nested attributes. */
 	[OVS_CT_ATTR_NAT]	= { .minlen = 0, .maxlen = INT_MAX },
 #endif
@@ -1547,7 +1547,7 @@ static int parse_ct(const struct nlattr *attr, struct ovs_conntrack_info *info,
 				return -EINVAL;
 			}
 			break;
-#ifdef CONFIG_NF_NAT_NEEDED
+#if IS_ENABLED(CONFIG_NF_NAT)
 		case OVS_CT_ATTR_NAT: {
 			int err = parse_nat(a, info, log);
 
@@ -1677,7 +1677,7 @@ err_free_ct:
 	return err;
 }
 
-#ifdef CONFIG_NF_NAT_NEEDED
+#if IS_ENABLED(CONFIG_NF_NAT)
 static bool ovs_ct_nat_to_attr(const struct ovs_conntrack_info *info,
 			       struct sk_buff *skb)
 {
@@ -1783,7 +1783,7 @@ int ovs_ct_action_to_attr(const struct ovs_conntrack_info *ct_info,
 			return -EMSGSIZE;
 	}
 
-#ifdef CONFIG_NF_NAT_NEEDED
+#if IS_ENABLED(CONFIG_NF_NAT)
 	if (ct_info->nat && !ovs_ct_nat_to_attr(ct_info, skb))
 		return -EMSGSIZE;
 #endif