Merge remote-tracking branch 'wireless/master' into mac80211

37 files changed, 3504 insertions, 546 deletions

diff --git a/net/ipv6/Kconfig b/net/ipv6/Kconfig
index 5728695b544..4f7fe7270e3 100644
--- a/net/ipv6/Kconfig
+++ b/net/ipv6/Kconfig
@@ -201,6 +201,22 @@ config IPV6_TUNNEL
 
 	  If unsure, say N.
 
+config IPV6_GRE
+	tristate "IPv6: GRE tunnel"
+	select IPV6_TUNNEL
+	---help---
+	  Tunneling means encapsulating data of one protocol type within
+	  another protocol and sending it over a channel that understands the
+	  encapsulating protocol. This particular tunneling driver implements
+	  GRE (Generic Routing Encapsulation) and at this time allows
+	  encapsulating of IPv4 or IPv6 over existing IPv6 infrastructure.
+	  This driver is useful if the other endpoint is a Cisco router: Cisco
+	  likes GRE much better than the other Linux tunneling driver ("IP
+	  tunneling" above). In addition, GRE allows multicast redistribution
+	  through the tunnel.
+
+	  Saying M here will produce a module called ip6_gre. If unsure, say N.
+
 config IPV6_MULTIPLE_TABLES
 	bool "IPv6: Multiple Routing Tables"
 	depends on EXPERIMENTAL
diff --git a/net/ipv6/Makefile b/net/ipv6/Makefile
index 686934acfac..b6d3f79151e 100644
--- a/net/ipv6/Makefile
+++ b/net/ipv6/Makefile
@@ -36,6 +36,7 @@ obj-$(CONFIG_NETFILTER)	+= netfilter/
 
 obj-$(CONFIG_IPV6_SIT) += sit.o
 obj-$(CONFIG_IPV6_TUNNEL) += ip6_tunnel.o
+obj-$(CONFIG_IPV6_GRE) += ip6_gre.o
 
 obj-y += addrconf_core.o exthdrs_core.o
 
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 79181819a24..d7c56f8a5b4 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -127,8 +127,8 @@ static inline void addrconf_sysctl_unregister(struct inet6_dev *idev)
 #endif
 
 #ifdef CONFIG_IPV6_PRIVACY
-static int __ipv6_regen_rndid(struct inet6_dev *idev);
-static int __ipv6_try_regen_rndid(struct inet6_dev *idev, struct in6_addr *tmpaddr);
+static void __ipv6_regen_rndid(struct inet6_dev *idev);
+static void __ipv6_try_regen_rndid(struct inet6_dev *idev, struct in6_addr *tmpaddr);
 static void ipv6_regen_rndid(unsigned long data);
 #endif
 
@@ -494,8 +494,7 @@ static void addrconf_forward_change(struct net *net, __s32 newf)
 	struct net_device *dev;
 	struct inet6_dev *idev;
 
-	rcu_read_lock();
-	for_each_netdev_rcu(net, dev) {
+	for_each_netdev(net, dev) {
 		idev = __in6_dev_get(dev);
 		if (idev) {
 			int changed = (!idev->cnf.forwarding) ^ (!newf);
@@ -504,7 +503,6 @@ static void addrconf_forward_change(struct net *net, __s32 newf)
 				dev_forward_change(idev);
 		}
 	}
-	rcu_read_unlock();
 }
 
 static int addrconf_fixup_forwarding(struct ctl_table *table, int *p, int newf)
@@ -790,10 +788,16 @@ static void ipv6_del_addr(struct inet6_ifaddr *ifp)
 		struct in6_addr prefix;
 		struct rt6_info *rt;
 		struct net *net = dev_net(ifp->idev->dev);
+		struct flowi6 fl6 = {};
+
 		ipv6_addr_prefix(&prefix, &ifp->addr, ifp->prefix_len);
-		rt = rt6_lookup(net, &prefix, NULL, ifp->idev->dev->ifindex, 1);
+		fl6.flowi6_oif = ifp->idev->dev->ifindex;
+		fl6.daddr = prefix;
+		rt = (struct rt6_info *)ip6_route_lookup(net, &fl6,
+							 RT6_LOOKUP_F_IFACE);
 
-		if (rt && addrconf_is_prefix_route(rt)) {
+		if (rt != net->ipv6.ip6_null_entry &&
+		    addrconf_is_prefix_route(rt)) {
 			if (onlink == 0) {
 				ip6_del_rt(rt);
 				rt = NULL;
@@ -854,16 +858,7 @@ retry:
 	}
 	in6_ifa_hold(ifp);
 	memcpy(addr.s6_addr, ifp->addr.s6_addr, 8);
-	if (__ipv6_try_regen_rndid(idev, tmpaddr) < 0) {
-		spin_unlock_bh(&ifp->lock);
-		write_unlock(&idev->lock);
-		pr_warn("%s: regeneration of randomized interface id failed\n",
-			__func__);
-		in6_ifa_put(ifp);
-		in6_dev_put(idev);
-		ret = -1;
-		goto out;
-	}
+	__ipv6_try_regen_rndid(idev, tmpaddr);
 	memcpy(&addr.s6_addr[8], idev->rndid, 8);
 	age = (now - ifp->tstamp) / HZ;
 	tmp_valid_lft = min_t(__u32,
@@ -1081,8 +1076,10 @@ static int ipv6_get_saddr_eval(struct net *net,
 		break;
 	case IPV6_SADDR_RULE_PREFIX:
 		/* Rule 8: Use longest matching prefix */
-		score->matchlen = ret = ipv6_addr_diff(&score->ifa->addr,
-						       dst->addr);
+		ret = ipv6_addr_diff(&score->ifa->addr, dst->addr);
+		if (ret > score->ifa->prefix_len)
+			ret = score->ifa->prefix_len;
+		score->matchlen = ret;
 		break;
 	default:
 		ret = 0;
@@ -1095,7 +1092,7 @@ out:
 	return ret;
 }
 
-int ipv6_dev_get_saddr(struct net *net, struct net_device *dst_dev,
+int ipv6_dev_get_saddr(struct net *net, const struct net_device *dst_dev,
 		       const struct in6_addr *daddr, unsigned int prefs,
 		       struct in6_addr *saddr)
 {
@@ -1602,7 +1599,7 @@ static int ipv6_inherit_eui64(u8 *eui, struct inet6_dev *idev)
 
 #ifdef CONFIG_IPV6_PRIVACY
 /* (re)generation of randomized interface identifier (RFC 3041 3.2, 3.5) */
-static int __ipv6_regen_rndid(struct inet6_dev *idev)
+static void __ipv6_regen_rndid(struct inet6_dev *idev)
 {
 regen:
 	get_random_bytes(idev->rndid, sizeof(idev->rndid));
@@ -1629,8 +1626,6 @@ regen:
 		if ((idev->rndid[2]|idev->rndid[3]|idev->rndid[4]|idev->rndid[5]|idev->rndid[6]|idev->rndid[7]) == 0x00)
 			goto regen;
 	}
-
-	return 0;
 }
 
 static void ipv6_regen_rndid(unsigned long data)
@@ -1644,8 +1639,7 @@ static void ipv6_regen_rndid(unsigned long data)
 	if (idev->dead)
 		goto out;
 
-	if (__ipv6_regen_rndid(idev) < 0)
-		goto out;
+	__ipv6_regen_rndid(idev);
 
 	expires = jiffies +
 		idev->cnf.temp_prefered_lft * HZ -
@@ -1666,13 +1660,10 @@ out:
 	in6_dev_put(idev);
 }
 
-static int __ipv6_try_regen_rndid(struct inet6_dev *idev, struct in6_addr *tmpaddr)
+static void  __ipv6_try_regen_rndid(struct inet6_dev *idev, struct in6_addr *tmpaddr)
 {
-	int ret = 0;
-
 	if (tmpaddr && memcmp(idev->rndid, &tmpaddr->s6_addr[8], 8) == 0)
-		ret = __ipv6_regen_rndid(idev);
-	return ret;
+		__ipv6_regen_rndid(idev);
 }
 #endif
 
@@ -1723,7 +1714,7 @@ static struct rt6_info *addrconf_get_prefix_route(const struct in6_addr *pfx,
 	if (table == NULL)
 		return NULL;
 
-	write_lock_bh(&table->tb6_lock);
+	read_lock_bh(&table->tb6_lock);
 	fn = fib6_locate(&table->tb6_root, pfx, plen, NULL, 0);
 	if (!fn)
 		goto out;
@@ -1738,7 +1729,7 @@ static struct rt6_info *addrconf_get_prefix_route(const struct in6_addr *pfx,
 		break;
 	}
 out:
-	write_unlock_bh(&table->tb6_lock);
+	read_unlock_bh(&table->tb6_lock);
 	return rt;
 }
 
@@ -1778,14 +1769,6 @@ static void sit_route_add(struct net_device *dev)
 }
 #endif
 
-static void addrconf_add_lroute(struct net_device *dev)
-{
-	struct in6_addr addr;
-
-	ipv6_addr_set(&addr,  htonl(0xFE800000), 0, 0, 0);
-	addrconf_prefix_route(&addr, 64, dev, 0, 0);
-}
-
 static struct inet6_dev *addrconf_add_dev(struct net_device *dev)
 {
 	struct inet6_dev *idev;
@@ -1803,8 +1786,6 @@ static struct inet6_dev *addrconf_add_dev(struct net_device *dev)
 	if (!(dev->flags & IFF_LOOPBACK))
 		addrconf_add_mroute(dev);
 
-	/* Add link local route */
-	addrconf_add_lroute(dev);
 	return idev;
 }
 
@@ -2483,10 +2464,9 @@ static void addrconf_sit_config(struct net_device *dev)
 
 	sit_add_v4_addrs(idev);
 
-	if (dev->flags&IFF_POINTOPOINT) {
+	if (dev->flags&IFF_POINTOPOINT)
 		addrconf_add_mroute(dev);
-		addrconf_add_lroute(dev);
-	} else
+	else
 		sit_route_add(dev);
 }
 #endif
@@ -3551,12 +3531,12 @@ static inline int inet6_ifaddr_msgsize(void)
 }
 
 static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa,
-			     u32 pid, u32 seq, int event, unsigned int flags)
+			     u32 portid, u32 seq, int event, unsigned int flags)
 {
 	struct nlmsghdr  *nlh;
 	u32 preferred, valid;
 
-	nlh = nlmsg_put(skb, pid, seq, event, sizeof(struct ifaddrmsg), flags);
+	nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct ifaddrmsg), flags);
 	if (nlh == NULL)
 		return -EMSGSIZE;
 
@@ -3594,7 +3574,7 @@ static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa,
 }
 
 static int inet6_fill_ifmcaddr(struct sk_buff *skb, struct ifmcaddr6 *ifmca,
-				u32 pid, u32 seq, int event, u16 flags)
+				u32 portid, u32 seq, int event, u16 flags)
 {
 	struct nlmsghdr  *nlh;
 	u8 scope = RT_SCOPE_UNIVERSE;
@@ -3603,7 +3583,7 @@ static int inet6_fill_ifmcaddr(struct sk_buff *skb, struct ifmcaddr6 *ifmca,
 	if (ipv6_addr_scope(&ifmca->mca_addr) & IFA_SITE)
 		scope = RT_SCOPE_SITE;
 
-	nlh = nlmsg_put(skb, pid, seq, event, sizeof(struct ifaddrmsg), flags);
+	nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct ifaddrmsg), flags);
 	if (nlh == NULL)
 		return -EMSGSIZE;
 
@@ -3619,7 +3599,7 @@ static int inet6_fill_ifmcaddr(struct sk_buff *skb, struct ifmcaddr6 *ifmca,
 }
 
 static int inet6_fill_ifacaddr(struct sk_buff *skb, struct ifacaddr6 *ifaca,
-				u32 pid, u32 seq, int event, unsigned int flags)
+				u32 portid, u32 seq, int event, unsigned int flags)
 {
 	struct nlmsghdr  *nlh;
 	u8 scope = RT_SCOPE_UNIVERSE;
@@ -3628,7 +3608,7 @@ static int inet6_fill_ifacaddr(struct sk_buff *skb, struct ifacaddr6 *ifaca,
 	if (ipv6_addr_scope(&ifaca->aca_addr) & IFA_SITE)
 		scope = RT_SCOPE_SITE;
 
-	nlh = nlmsg_put(skb, pid, seq, event, sizeof(struct ifaddrmsg), flags);
+	nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct ifaddrmsg), flags);
 	if (nlh == NULL)
 		return -EMSGSIZE;
 
@@ -3669,7 +3649,7 @@ static int in6_dump_addrs(struct inet6_dev *idev, struct sk_buff *skb,
 			if (++ip_idx < s_ip_idx)
 				continue;
 			err = inet6_fill_ifaddr(skb, ifa,
-						NETLINK_CB(cb->skb).pid,
+						NETLINK_CB(cb->skb).portid,
 						cb->nlh->nlmsg_seq,
 						RTM_NEWADDR,
 						NLM_F_MULTI);
@@ -3685,7 +3665,7 @@ static int in6_dump_addrs(struct inet6_dev *idev, struct sk_buff *skb,
 			if (ip_idx < s_ip_idx)
 				continue;
 			err = inet6_fill_ifmcaddr(skb, ifmca,
-						  NETLINK_CB(cb->skb).pid,
+						  NETLINK_CB(cb->skb).portid,
 						  cb->nlh->nlmsg_seq,
 						  RTM_GETMULTICAST,
 						  NLM_F_MULTI);
@@ -3700,7 +3680,7 @@ static int in6_dump_addrs(struct inet6_dev *idev, struct sk_buff *skb,
 			if (ip_idx < s_ip_idx)
 				continue;
 			err = inet6_fill_ifacaddr(skb, ifaca,
-						  NETLINK_CB(cb->skb).pid,
+						  NETLINK_CB(cb->skb).portid,
 						  cb->nlh->nlmsg_seq,
 						  RTM_GETANYCAST,
 						  NLM_F_MULTI);
@@ -3822,7 +3802,7 @@ static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr *nlh,
 		goto errout_ifa;
 	}
 
-	err = inet6_fill_ifaddr(skb, ifa, NETLINK_CB(in_skb).pid,
+	err = inet6_fill_ifaddr(skb, ifa, NETLINK_CB(in_skb).portid,
 				nlh->nlmsg_seq, RTM_NEWADDR, 0);
 	if (err < 0) {
 		/* -EMSGSIZE implies BUG in inet6_ifaddr_msgsize() */
@@ -3830,7 +3810,7 @@ static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr *nlh,
 		kfree_skb(skb);
 		goto errout_ifa;
 	}
-	err = rtnl_unicast(skb, net, NETLINK_CB(in_skb).pid);
+	err = rtnl_unicast(skb, net, NETLINK_CB(in_skb).portid);
 errout_ifa:
 	in6_ifa_put(ifa);
 errout:
@@ -4032,14 +4012,14 @@ static int inet6_fill_link_af(struct sk_buff *skb, const struct net_device *dev)
 }
 
 static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev,
-			     u32 pid, u32 seq, int event, unsigned int flags)
+			     u32 portid, u32 seq, int event, unsigned int flags)
 {
 	struct net_device *dev = idev->dev;
 	struct ifinfomsg *hdr;
 	struct nlmsghdr *nlh;
 	void *protoinfo;
 
-	nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
+	nlh = nlmsg_put(skb, portid, seq, event, sizeof(*hdr), flags);
 	if (nlh == NULL)
 		return -EMSGSIZE;
 
@@ -4097,7 +4077,7 @@ static int inet6_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
 			if (!idev)
 				goto cont;
 			if (inet6_fill_ifinfo(skb, idev,
-					      NETLINK_CB(cb->skb).pid,
+					      NETLINK_CB(cb->skb).portid,
 					      cb->nlh->nlmsg_seq,
 					      RTM_NEWLINK, NLM_F_MULTI) <= 0)
 				goto out;
@@ -4145,14 +4125,14 @@ static inline size_t inet6_prefix_nlmsg_size(void)
 }
 
 static int inet6_fill_prefix(struct sk_buff *skb, struct inet6_dev *idev,
-			     struct prefix_info *pinfo, u32 pid, u32 seq,
+			     struct prefix_info *pinfo, u32 portid, u32 seq,
 			     int event, unsigned int flags)
 {
 	struct prefixmsg *pmsg;
 	struct nlmsghdr *nlh;
 	struct prefix_cacheinfo	ci;
 
-	nlh = nlmsg_put(skb, pid, seq, event, sizeof(*pmsg), flags);
+	nlh = nlmsg_put(skb, portid, seq, event, sizeof(*pmsg), flags);
 	if (nlh == NULL)
 		return -EMSGSIZE;
 
diff --git a/net/ipv6/addrlabel.c b/net/ipv6/addrlabel.c
index eb6a63632d3..4be23da32b8 100644
--- a/net/ipv6/addrlabel.c
+++ b/net/ipv6/addrlabel.c
@@ -57,7 +57,7 @@ struct net *ip6addrlbl_net(const struct ip6addrlbl_entry *lbl)
 }
 
 /*
- * Default policy table (RFC3484 + extensions)
+ * Default policy table (RFC6724 + extensions)
  *
  * prefix		addr_type	label
  * -------------------------------------------------------------------------
@@ -69,8 +69,12 @@ struct net *ip6addrlbl_net(const struct ip6addrlbl_entry *lbl)
  * fc00::/7		N/A		5		ULA (RFC 4193)
  * 2001::/32		N/A		6		Teredo (RFC 4380)
  * 2001:10::/28		N/A		7		ORCHID (RFC 4843)
+ * fec0::/10		N/A		11		Site-local
+ *							(deprecated by RFC3879)
+ * 3ffe::/16		N/A		12		6bone
  *
  * Note: 0xffffffff is used if we do not have any policies.
+ * Note: Labels for ULA and 6to4 are different from labels listed in RFC6724.
  */
 
 #define IPV6_ADDR_LABEL_DEFAULT	0xffffffffUL
@@ -88,10 +92,18 @@ static const __net_initdata struct ip6addrlbl_init_table
 		.prefix = &(struct in6_addr){{{ 0xfc }}},
 		.prefixlen = 7,
 		.label = 5,
+	},{	/* fec0::/10 */
+		.prefix = &(struct in6_addr){{{ 0xfe, 0xc0 }}},
+		.prefixlen = 10,
+		.label = 11,
 	},{	/* 2002::/16 */
 		.prefix = &(struct in6_addr){{{ 0x20, 0x02 }}},
 		.prefixlen = 16,
 		.label = 2,
+	},{	/* 3ffe::/16 */
+		.prefix = &(struct in6_addr){{{ 0x3f, 0xfe }}},
+		.prefixlen = 16,
+		.label = 12,
 	},{	/* 2001::/32 */
 		.prefix = &(struct in6_addr){{{ 0x20, 0x01 }}},
 		.prefixlen = 32,
@@ -470,10 +482,10 @@ static void ip6addrlbl_putmsg(struct nlmsghdr *nlh,
 static int ip6addrlbl_fill(struct sk_buff *skb,
 			   struct ip6addrlbl_entry *p,
 			   u32 lseq,
-			   u32 pid, u32 seq, int event,
+			   u32 portid, u32 seq, int event,
 			   unsigned int flags)
 {
-	struct nlmsghdr *nlh = nlmsg_put(skb, pid, seq, event,
+	struct nlmsghdr *nlh = nlmsg_put(skb, portid, seq, event,
 					 sizeof(struct ifaddrlblmsg), flags);
 	if (!nlh)
 		return -EMSGSIZE;
@@ -503,7 +515,7 @@ static int ip6addrlbl_dump(struct sk_buff *skb, struct netlink_callback *cb)
 		    net_eq(ip6addrlbl_net(p), net)) {
 			if ((err = ip6addrlbl_fill(skb, p,
 						   ip6addrlbl_table.seq,
-						   NETLINK_CB(cb->skb).pid,
+						   NETLINK_CB(cb->skb).portid,
 						   cb->nlh->nlmsg_seq,
 						   RTM_NEWADDRLABEL,
 						   NLM_F_MULTI)) <= 0)
@@ -574,7 +586,7 @@ static int ip6addrlbl_get(struct sk_buff *in_skb, struct nlmsghdr* nlh,
 	}
 
 	err = ip6addrlbl_fill(skb, p, lseq,
-			      NETLINK_CB(in_skb).pid, nlh->nlmsg_seq,
+			      NETLINK_CB(in_skb).portid, nlh->nlmsg_seq,
 			      RTM_NEWADDRLABEL, 0);
 
 	ip6addrlbl_put(p);
@@ -585,7 +597,7 @@ static int ip6addrlbl_get(struct sk_buff *in_skb, struct nlmsghdr* nlh,
 		goto out;
 	}
 
-	err = rtnl_unicast(skb, net, NETLINK_CB(in_skb).pid);
+	err = rtnl_unicast(skb, net, NETLINK_CB(in_skb).portid);
 out:
 	return err;
 }
diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index 6dc7fd353ef..282f3723ee1 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -167,8 +167,6 @@ static int esp6_output(struct xfrm_state *x, struct sk_buff *skb)
 	struct esp_data *esp = x->data;
 
 	/* skb is pure payload to encrypt */
-	err = -ENOMEM;
-
 	aead = esp->aead;
 	alen = crypto_aead_authsize(aead);
 
@@ -203,8 +201,10 @@ static int esp6_output(struct xfrm_state *x, struct sk_buff *skb)
 	}
 
 	tmp = esp_alloc_tmp(aead, nfrags + sglists, seqhilen);
-	if (!tmp)
+	if (!tmp) {
+		err = -ENOMEM;
 		goto error;
+	}
 
 	seqhi = esp_tmp_seqhi(tmp);
 	iv = esp_tmp_iv(aead, tmp, seqhilen);
diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c
index 0251a6005be..c4f934176ca 100644
--- a/net/ipv6/inet6_connection_sock.c
+++ b/net/ipv6/inet6_connection_sock.c
@@ -175,33 +175,12 @@ void __inet6_csk_dst_store(struct sock *sk, struct dst_entry *dst,
 			   const struct in6_addr *saddr)
 {
 	__ip6_dst_store(sk, dst, daddr, saddr);
-
-#ifdef CONFIG_XFRM
-	{
-		struct rt6_info *rt = (struct rt6_info  *)dst;
-		rt->rt6i_flow_cache_genid = atomic_read(&flow_cache_genid);
-	}
-#endif
 }
 
 static inline
 struct dst_entry *__inet6_csk_dst_check(struct sock *sk, u32 cookie)
 {
-	struct dst_entry *dst;
-
-	dst = __sk_dst_check(sk, cookie);
-
-#ifdef CONFIG_XFRM
-	if (dst) {
-		struct rt6_info *rt = (struct rt6_info *)dst;
-		if (rt->rt6i_flow_cache_genid != atomic_read(&flow_cache_genid)) {
-			__sk_dst_reset(sk);
-			dst = NULL;
-		}
-	}
-#endif
-
-	return dst;
+	return __sk_dst_check(sk, cookie);
 }
 
 static struct dst_entry *inet6_csk_route_socket(struct sock *sk,
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 13690d650c3..24995a93ef8 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -514,7 +514,7 @@ static struct fib6_node * fib6_add_1(struct fib6_node *root, void *addr,
 	ln = node_alloc();
 
 	if (!ln)
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 	ln->fn_bit = plen;
 
 	ln->parent = pn;
@@ -561,7 +561,7 @@ insert_above:
 				node_free(in);
 			if (ln)
 				node_free(ln);
-			return NULL;
+			return ERR_PTR(-ENOMEM);
 		}
 
 		/*
@@ -611,7 +611,7 @@ insert_above:
 		ln = node_alloc();
 
 		if (!ln)
-			return NULL;
+			return ERR_PTR(-ENOMEM);
 
 		ln->fn_bit = plen;
 
@@ -777,11 +777,8 @@ int fib6_add(struct fib6_node *root, struct rt6_info *rt, struct nl_info *info)
 
 	if (IS_ERR(fn)) {
 		err = PTR_ERR(fn);
-		fn = NULL;
-	}
-
-	if (!fn)
 		goto out;
+	}
 
 	pn = fn;
 
@@ -819,12 +816,13 @@ int fib6_add(struct fib6_node *root, struct rt6_info *rt, struct nl_info *info)
 					offsetof(struct rt6_info, rt6i_src),
 					allow_create, replace_required);
 
-			if (!sn) {
+			if (IS_ERR(sn)) {
 				/* If it is failed, discard just allocated
 				   root, and then (in st_failure) stale node
 				   in main tree.
 				 */
 				node_free(sfn);
+				err = PTR_ERR(sn);
 				goto st_failure;
 			}
 
@@ -839,10 +837,8 @@ int fib6_add(struct fib6_node *root, struct rt6_info *rt, struct nl_info *info)
 
 			if (IS_ERR(sn)) {
 				err = PTR_ERR(sn);
-				sn = NULL;
-			}
-			if (!sn)
 				goto st_failure;
+			}
 		}
 
 		if (!fn->leaf) {
diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c
index 9772fbd8a3f..90bbefb5794 100644
--- a/net/ipv6/ip6_flowlabel.c
+++ b/net/ipv6/ip6_flowlabel.c
@@ -22,6 +22,7 @@
 #include <linux/seq_file.h>
 #include <linux/slab.h>
 #include <linux/export.h>
+#include <linux/pid_namespace.h>
 
 #include <net/net_namespace.h>
 #include <net/sock.h>
@@ -91,6 +92,8 @@ static struct ip6_flowlabel *fl_lookup(struct net *net, __be32 label)
 static void fl_free(struct ip6_flowlabel *fl)
 {
 	if (fl) {
+		if (fl->share == IPV6_FL_S_PROCESS)
+			put_pid(fl->owner.pid);
 		release_net(fl->fl_net);
 		kfree(fl->opt);
 	}
@@ -394,10 +397,10 @@ fl_create(struct net *net, struct sock *sk, struct in6_flowlabel_req *freq,
 	case IPV6_FL_S_ANY:
 		break;
 	case IPV6_FL_S_PROCESS:
-		fl->owner = current->pid;
+		fl->owner.pid = get_task_pid(current, PIDTYPE_PID);
 		break;
 	case IPV6_FL_S_USER:
-		fl->owner = current_euid();
+		fl->owner.uid = current_euid();
 		break;
 	default:
 		err = -EINVAL;
@@ -561,7 +564,10 @@ recheck:
 				err = -EPERM;
 				if (fl1->share == IPV6_FL_S_EXCL ||
 				    fl1->share != fl->share ||
-				    fl1->owner != fl->owner)
+				    ((fl1->share == IPV6_FL_S_PROCESS) &&
+				     (fl1->owner.pid == fl->owner.pid)) ||
+				    ((fl1->share == IPV6_FL_S_USER) &&
+				     uid_eq(fl1->owner.uid, fl->owner.uid)))
 					goto release;
 
 				err = -EINVAL;
@@ -621,6 +627,7 @@ done:
 
 struct ip6fl_iter_state {
 	struct seq_net_private p;
+	struct pid_namespace *pid_ns;
 	int bucket;
 };
 
@@ -699,6 +706,7 @@ static void ip6fl_seq_stop(struct seq_file *seq, void *v)
 
 static int ip6fl_seq_show(struct seq_file *seq, void *v)
 {
+	struct ip6fl_iter_state *state = ip6fl_seq_private(seq);
 	if (v == SEQ_START_TOKEN)
 		seq_printf(seq, "%-5s %-1s %-6s %-6s %-6s %-8s %-32s %s\n",
 			   "Label", "S", "Owner", "Users", "Linger", "Expires", "Dst", "Opt");
@@ -708,7 +716,11 @@ static int ip6fl_seq_show(struct seq_file *seq, void *v)
 			   "%05X %-1d %-6d %-6d %-6ld %-8ld %pi6 %-4d\n",
 			   (unsigned int)ntohl(fl->label),
 			   fl->share,
-			   (int)fl->owner,
+			   ((fl->share == IPV6_FL_S_PROCESS) ?
+			    pid_nr_ns(fl->owner.pid, state->pid_ns) :
+			    ((fl->share == IPV6_FL_S_USER) ?
+			     from_kuid_munged(seq_user_ns(seq), fl->owner.uid) :
+			     0)),
 			   atomic_read(&fl->users),
 			   fl->linger/HZ,
 			   (long)(fl->expires - jiffies)/HZ,
@@ -727,8 +739,29 @@ static const struct seq_operations ip6fl_seq_ops = {
 
 static int ip6fl_seq_open(struct inode *inode, struct file *file)
 {
-	return seq_open_net(inode, file, &ip6fl_seq_ops,
-			    sizeof(struct ip6fl_iter_state));
+	struct seq_file *seq;
+	struct ip6fl_iter_state *state;
+	int err;
+
+	err = seq_open_net(inode, file, &ip6fl_seq_ops,
+			   sizeof(struct ip6fl_iter_state));
+
+	if (!err) {
+		seq = file->private_data;
+		state = ip6fl_seq_private(seq);
+		rcu_read_lock();
+		state->pid_ns = get_pid_ns(task_active_pid_ns(current));
+		rcu_read_unlock();
+	}
+	return err;
+}
+
+static int ip6fl_seq_release(struct inode *inode, struct file *file)
+{
+	struct seq_file *seq = file->private_data;
+	struct ip6fl_iter_state *state = ip6fl_seq_private(seq);
+	put_pid_ns(state->pid_ns);
+	return seq_release_net(inode, file);
 }
 
 static const struct file_operations ip6fl_seq_fops = {
@@ -736,7 +769,7 @@ static const struct file_operations ip6fl_seq_fops = {
 	.open		=	ip6fl_seq_open,
 	.read		=	seq_read,
 	.llseek		=	seq_lseek,
-	.release	=	seq_release_net,
+	.release	=	ip6fl_seq_release,
 };
 
 static int __net_init ip6_flowlabel_proc_init(struct net *net)
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
new file mode 100644
index 00000000000..0185679c5f5
--- /dev/null
+++ b/net/ipv6/ip6_gre.c
@@ -0,0 +1,1770 @@
+/*
+ *	GRE over IPv6 protocol decoder.
+ *
+ *	Authors: Dmitry Kozlov (xeb@mail.ru)
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License
+ *	as published by the Free Software Foundation; either version
+ *	2 of the License, or (at your option) any later version.
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/capability.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/in.h>
+#include <linux/tcp.h>
+#include <linux/udp.h>
+#include <linux/if_arp.h>
+#include <linux/mroute.h>
+#include <linux/init.h>
+#include <linux/in6.h>
+#include <linux/inetdevice.h>
+#include <linux/igmp.h>
+#include <linux/netfilter_ipv4.h>
+#include <linux/etherdevice.h>
+#include <linux/if_ether.h>
+#include <linux/hash.h>
+#include <linux/if_tunnel.h>
+#include <linux/ip6_tunnel.h>
+
+#include <net/sock.h>
+#include <net/ip.h>
+#include <net/icmp.h>
+#include <net/protocol.h>
+#include <net/addrconf.h>
+#include <net/arp.h>
+#include <net/checksum.h>
+#include <net/dsfield.h>
+#include <net/inet_ecn.h>
+#include <net/xfrm.h>
+#include <net/net_namespace.h>
+#include <net/netns/generic.h>
+#include <net/rtnetlink.h>
+
+#include <net/ipv6.h>
+#include <net/ip6_fib.h>
+#include <net/ip6_route.h>
+#include <net/ip6_tunnel.h>
+
+
+static bool log_ecn_error = true;
+module_param(log_ecn_error, bool, 0644);
+MODULE_PARM_DESC(log_ecn_error, "Log packets received with corrupted ECN");
+
+#define IPV6_TCLASS_MASK (IPV6_FLOWINFO_MASK & ~IPV6_FLOWLABEL_MASK)
+#define IPV6_TCLASS_SHIFT 20
+
+#define HASH_SIZE_SHIFT  5
+#define HASH_SIZE (1 << HASH_SIZE_SHIFT)
+
+static int ip6gre_net_id __read_mostly;
+struct ip6gre_net {
+	struct ip6_tnl __rcu *tunnels[4][HASH_SIZE];
+
+	struct net_device *fb_tunnel_dev;
+};
+
+static struct rtnl_link_ops ip6gre_link_ops __read_mostly;
+static int ip6gre_tunnel_init(struct net_device *dev);
+static void ip6gre_tunnel_setup(struct net_device *dev);
+static void ip6gre_tunnel_link(struct ip6gre_net *ign, struct ip6_tnl *t);
+static void ip6gre_tnl_link_config(struct ip6_tnl *t, int set_mtu);
+
+/* Tunnel hash table */
+
+/*
+   4 hash tables:
+
+   3: (remote,local)
+   2: (remote,*)
+   1: (*,local)
+   0: (*,*)
+
+   We require exact key match i.e. if a key is present in packet
+   it will match only tunnel with the same key; if it is not present,
+   it will match only keyless tunnel.
+
+   All keysless packets, if not matched configured keyless tunnels
+   will match fallback tunnel.
+ */
+
+#define HASH_KEY(key) (((__force u32)key^((__force u32)key>>4))&(HASH_SIZE - 1))
+static u32 HASH_ADDR(const struct in6_addr *addr)
+{
+	u32 hash = ipv6_addr_hash(addr);
+
+	return hash_32(hash, HASH_SIZE_SHIFT);
+}
+
+#define tunnels_r_l	tunnels[3]
+#define tunnels_r	tunnels[2]
+#define tunnels_l	tunnels[1]
+#define tunnels_wc	tunnels[0]
+/*
+ * Locking : hash tables are protected by RCU and RTNL
+ */
+
+#define for_each_ip_tunnel_rcu(start) \
+	for (t = rcu_dereference(start); t; t = rcu_dereference(t->next))
+
+/* often modified stats are per cpu, other are shared (netdev->stats) */
+struct pcpu_tstats {
+	u64	rx_packets;
+	u64	rx_bytes;
+	u64	tx_packets;
+	u64	tx_bytes;
+	struct u64_stats_sync	syncp;
+};
+
+static struct rtnl_link_stats64 *ip6gre_get_stats64(struct net_device *dev,
+		struct rtnl_link_stats64 *tot)
+{
+	int i;
+
+	for_each_possible_cpu(i) {
+		const struct pcpu_tstats *tstats = per_cpu_ptr(dev->tstats, i);
+		u64 rx_packets, rx_bytes, tx_packets, tx_bytes;
+		unsigned int start;
+
+		do {
+			start = u64_stats_fetch_begin_bh(&tstats->syncp);
+			rx_packets = tstats->rx_packets;
+			tx_packets = tstats->tx_packets;
+			rx_bytes = tstats->rx_bytes;
+			tx_bytes = tstats->tx_bytes;
+		} while (u64_stats_fetch_retry_bh(&tstats->syncp, start));
+
+		tot->rx_packets += rx_packets;
+		tot->tx_packets += tx_packets;
+		tot->rx_bytes   += rx_bytes;
+		tot->tx_bytes   += tx_bytes;
+	}
+
+	tot->multicast = dev->stats.multicast;
+	tot->rx_crc_errors = dev->stats.rx_crc_errors;
+	tot->rx_fifo_errors = dev->stats.rx_fifo_errors;
+	tot->rx_length_errors = dev->stats.rx_length_errors;
+	tot->rx_frame_errors = dev->stats.rx_frame_errors;
+	tot->rx_errors = dev->stats.rx_errors;
+
+	tot->tx_fifo_errors = dev->stats.tx_fifo_errors;
+	tot->tx_carrier_errors = dev->stats.tx_carrier_errors;
+	tot->tx_dropped = dev->stats.tx_dropped;
+	tot->tx_aborted_errors = dev->stats.tx_aborted_errors;
+	tot->tx_errors = dev->stats.tx_errors;
+
+	return tot;
+}
+
+/* Given src, dst and key, find appropriate for input tunnel. */
+
+static struct ip6_tnl *ip6gre_tunnel_lookup(struct net_device *dev,
+		const struct in6_addr *remote, const struct in6_addr *local,
+		__be32 key, __be16 gre_proto)
+{
+	struct net *net = dev_net(dev);
+	int link = dev->ifindex;
+	unsigned int h0 = HASH_ADDR(remote);
+	unsigned int h1 = HASH_KEY(key);
+	struct ip6_tnl *t, *cand = NULL;
+	struct ip6gre_net *ign = net_generic(net, ip6gre_net_id);
+	int dev_type = (gre_proto == htons(ETH_P_TEB)) ?
+		       ARPHRD_ETHER : ARPHRD_IP6GRE;
+	int score, cand_score = 4;
+
+	for_each_ip_tunnel_rcu(ign->tunnels_r_l[h0 ^ h1]) {
+		if (!ipv6_addr_equal(local, &t->parms.laddr) ||
+		    !ipv6_addr_equal(remote, &t->parms.raddr) ||
+		    key != t->parms.i_key ||
+		    !(t->dev->flags & IFF_UP))
+			continue;
+
+		if (t->dev->type != ARPHRD_IP6GRE &&
+		    t->dev->type != dev_type)
+			continue;
+
+		score = 0;
+		if (t->parms.link != link)
+			score |= 1;
+		if (t->dev->type != dev_type)
+			score |= 2;
+		if (score == 0)
+			return t;
+
+		if (score < cand_score) {
+			cand = t;
+			cand_score = score;
+		}
+	}
+
+	for_each_ip_tunnel_rcu(ign->tunnels_r[h0 ^ h1]) {
+		if (!ipv6_addr_equal(remote, &t->parms.raddr) ||
+		    key != t->parms.i_key ||
+		    !(t->dev->flags & IFF_UP))
+			continue;
+
+		if (t->dev->type != ARPHRD_IP6GRE &&
+		    t->dev->type != dev_type)
+			continue;
+
+		score = 0;
+		if (t->parms.link != link)
+			score |= 1;
+		if (t->dev->type != dev_type)
+			score |= 2;
+		if (score == 0)
+			return t;
+
+		if (score < cand_score) {
+			cand = t;
+			cand_score = score;
+		}
+	}
+
+	for_each_ip_tunnel_rcu(ign->tunnels_l[h1]) {
+		if ((!ipv6_addr_equal(local, &t->parms.laddr) &&
+			  (!ipv6_addr_equal(local, &t->parms.raddr) ||
+				 !ipv6_addr_is_multicast(local))) ||
+		    key != t->parms.i_key ||
+		    !(t->dev->flags & IFF_UP))
+			continue;
+
+		if (t->dev->type != ARPHRD_IP6GRE &&
+		    t->dev->type != dev_type)
+			continue;
+
+		score = 0;
+		if (t->parms.link != link)
+			score |= 1;
+		if (t->dev->type != dev_type)
+			score |= 2;
+		if (score == 0)
+			return t;
+
+		if (score < cand_score) {
+			cand = t;
+			cand_score = score;
+		}
+	}
+
+	for_each_ip_tunnel_rcu(ign->tunnels_wc[h1]) {
+		if (t->parms.i_key != key ||
+		    !(t->dev->flags & IFF_UP))
+			continue;
+
+		if (t->dev->type != ARPHRD_IP6GRE &&
+		    t->dev->type != dev_type)
+			continue;
+
+		score = 0;
+		if (t->parms.link != link)
+			score |= 1;
+		if (t->dev->type != dev_type)
+			score |= 2;
+		if (score == 0)
+			return t;
+
+		if (score < cand_score) {
+			cand = t;
+			cand_score = score;
+		}
+	}
+
+	if (cand != NULL)
+		return cand;
+
+	dev = ign->fb_tunnel_dev;
+	if (dev->flags & IFF_UP)
+		return netdev_priv(dev);
+
+	return NULL;
+}
+
+static struct ip6_tnl __rcu **__ip6gre_bucket(struct ip6gre_net *ign,
+		const struct __ip6_tnl_parm *p)
+{
+	const struct in6_addr *remote = &p->raddr;
+	const struct in6_addr *local = &p->laddr;
+	unsigned int h = HASH_KEY(p->i_key);
+	int prio = 0;
+
+	if (!ipv6_addr_any(local))
+		prio |= 1;
+	if (!ipv6_addr_any(remote) && !ipv6_addr_is_multicast(remote)) {
+		prio |= 2;
+		h ^= HASH_ADDR(remote);
+	}
+
+	return &ign->tunnels[prio][h];
+}
+
+static inline struct ip6_tnl __rcu **ip6gre_bucket(struct ip6gre_net *ign,
+		const struct ip6_tnl *t)
+{
+	return __ip6gre_bucket(ign, &t->parms);
+}
+
+static void ip6gre_tunnel_link(struct ip6gre_net *ign, struct ip6_tnl *t)
+{
+	struct ip6_tnl __rcu **tp = ip6gre_bucket(ign, t);
+
+	rcu_assign_pointer(t->next, rtnl_dereference(*tp));
+	rcu_assign_pointer(*tp, t);
+}
+
+static void ip6gre_tunnel_unlink(struct ip6gre_net *ign, struct ip6_tnl *t)
+{
+	struct ip6_tnl __rcu **tp;
+	struct ip6_tnl *iter;
+
+	for (tp = ip6gre_bucket(ign, t);
+	     (iter = rtnl_dereference(*tp)) != NULL;
+	     tp = &iter->next) {
+		if (t == iter) {
+			rcu_assign_pointer(*tp, t->next);
+			break;
+		}
+	}
+}
+
+static struct ip6_tnl *ip6gre_tunnel_find(struct net *net,
+					   const struct __ip6_tnl_parm *parms,
+					   int type)
+{
+	const struct in6_addr *remote = &parms->raddr;
+	const struct in6_addr *local = &parms->laddr;
+	__be32 key = parms->i_key;
+	int link = parms->link;
+	struct ip6_tnl *t;
+	struct ip6_tnl __rcu **tp;
+	struct ip6gre_net *ign = net_generic(net, ip6gre_net_id);
+
+	for (tp = __ip6gre_bucket(ign, parms);
+	     (t = rtnl_dereference(*tp)) != NULL;
+	     tp = &t->next)
+		if (ipv6_addr_equal(local, &t->parms.laddr) &&
+		    ipv6_addr_equal(remote, &t->parms.raddr) &&
+		    key == t->parms.i_key &&
+		    link == t->parms.link &&
+		    type == t->dev->type)
+			break;
+
+	return t;
+}
+
+static struct ip6_tnl *ip6gre_tunnel_locate(struct net *net,
+		const struct __ip6_tnl_parm *parms, int create)
+{
+	struct ip6_tnl *t, *nt;
+	struct net_device *dev;
+	char name[IFNAMSIZ];
+	struct ip6gre_net *ign = net_generic(net, ip6gre_net_id);
+
+	t = ip6gre_tunnel_find(net, parms, ARPHRD_IP6GRE);
+	if (t || !create)
+		return t;
+
+	if (parms->name[0])
+		strlcpy(name, parms->name, IFNAMSIZ);
+	else
+		strcpy(name, "ip6gre%d");
+
+	dev = alloc_netdev(sizeof(*t), name, ip6gre_tunnel_setup);
+	if (!dev)
+		return NULL;
+
+	dev_net_set(dev, net);
+
+	nt = netdev_priv(dev);
+	nt->parms = *parms;
+	dev->rtnl_link_ops = &ip6gre_link_ops;
+
+	nt->dev = dev;
+	ip6gre_tnl_link_config(nt, 1);
+
+	if (register_netdevice(dev) < 0)
+		goto failed_free;
+
+	/* Can use a lockless transmit, unless we generate output sequences */
+	if (!(nt->parms.o_flags & GRE_SEQ))
+		dev->features |= NETIF_F_LLTX;
+
+	dev_hold(dev);
+	ip6gre_tunnel_link(ign, nt);
+	return nt;
+
+failed_free:
+	free_netdev(dev);
+	return NULL;
+}
+
+static void ip6gre_tunnel_uninit(struct net_device *dev)
+{
+	struct net *net = dev_net(dev);
+	struct ip6gre_net *ign = net_generic(net, ip6gre_net_id);
+
+	ip6gre_tunnel_unlink(ign, netdev_priv(dev));
+	dev_put(dev);
+}
+
+
+static void ip6gre_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
+		u8 type, u8 code, int offset, __be32 info)
+{
+	const struct ipv6hdr *ipv6h = (const struct ipv6hdr *)skb->data;
+	__be16 *p = (__be16 *)(skb->data + offset);
+	int grehlen = offset + 4;
+	struct ip6_tnl *t;
+	__be16 flags;
+
+	flags = p[0];
+	if (flags&(GRE_CSUM|GRE_KEY|GRE_SEQ|GRE_ROUTING|GRE_VERSION)) {
+		if (flags&(GRE_VERSION|GRE_ROUTING))
+			return;
+		if (flags&GRE_KEY) {
+			grehlen += 4;
+			if (flags&GRE_CSUM)
+				grehlen += 4;
+		}
+	}
+
+	/* If only 8 bytes returned, keyed message will be dropped here */
+	if (!pskb_may_pull(skb, grehlen))
+		return;
+	ipv6h = (const struct ipv6hdr *)skb->data;
+	p = (__be16 *)(skb->data + offset);
+
+	t = ip6gre_tunnel_lookup(skb->dev, &ipv6h->daddr, &ipv6h->saddr,
+				flags & GRE_KEY ?
+				*(((__be32 *)p) + (grehlen / 4) - 1) : 0,
+				p[1]);
+	if (t == NULL)
+		return;
+
+	switch (type) {
+		__u32 teli;
+		struct ipv6_tlv_tnl_enc_lim *tel;
+		__u32 mtu;
+	case ICMPV6_DEST_UNREACH:
+		net_warn_ratelimited("%s: Path to destination invalid or inactive!\n",
+				     t->parms.name);
+		break;
+	case ICMPV6_TIME_EXCEED:
+		if (code == ICMPV6_EXC_HOPLIMIT) {
+			net_warn_ratelimited("%s: Too small hop limit or routing loop in tunnel!\n",
+					     t->parms.name);
+		}
+		break;
+	case ICMPV6_PARAMPROB:
+		teli = 0;
+		if (code == ICMPV6_HDR_FIELD)
+			teli = ip6_tnl_parse_tlv_enc_lim(skb, skb->data);
+
+		if (teli && teli == info - 2) {
+			tel = (struct ipv6_tlv_tnl_enc_lim *) &skb->data[teli];
+			if (tel->encap_limit == 0) {
+				net_warn_ratelimited("%s: Too small encapsulation limit or routing loop in tunnel!\n",
+						     t->parms.name);
+			}
+		} else {
+			net_warn_ratelimited("%s: Recipient unable to parse tunneled packet!\n",
+					     t->parms.name);
+		}
+		break;
+	case ICMPV6_PKT_TOOBIG:
+		mtu = info - offset;
+		if (mtu < IPV6_MIN_MTU)
+			mtu = IPV6_MIN_MTU;
+		t->dev->mtu = mtu;
+		break;
+	}
+
+	if (time_before(jiffies, t->err_time + IP6TUNNEL_ERR_TIMEO))
+		t->err_count++;
+	else
+		t->err_count = 1;
+	t->err_time = jiffies;
+}
+
+static int ip6gre_rcv(struct sk_buff *skb)
+{
+	const struct ipv6hdr *ipv6h;
+	u8     *h;
+	__be16    flags;
+	__sum16   csum = 0;
+	__be32 key = 0;
+	u32    seqno = 0;
+	struct ip6_tnl *tunnel;
+	int    offset = 4;
+	__be16 gre_proto;
+	int err;
+
+	if (!pskb_may_pull(skb, sizeof(struct in6_addr)))
+		goto drop;
+
+	ipv6h = ipv6_hdr(skb);
+	h = skb->data;
+	flags = *(__be16 *)h;
+
+	if (flags&(GRE_CSUM|GRE_KEY|GRE_ROUTING|GRE_SEQ|GRE_VERSION)) {
+		/* - Version must be 0.
+		   - We do not support routing headers.
+		 */
+		if (flags&(GRE_VERSION|GRE_ROUTING))
+			goto drop;
+
+		if (flags&GRE_CSUM) {
+			switch (skb->ip_summed) {
+			case CHECKSUM_COMPLETE:
+				csum = csum_fold(skb->csum);
+				if (!csum)
+					break;
+				/* fall through */
+			case CHECKSUM_NONE:
+				skb->csum = 0;
+				csum = __skb_checksum_complete(skb);
+				skb->ip_summed = CHECKSUM_COMPLETE;
+			}
+			offset += 4;
+		}
+		if (flags&GRE_KEY) {
+			key = *(__be32 *)(h + offset);
+			offset += 4;
+		}
+		if (flags&GRE_SEQ) {
+			seqno = ntohl(*(__be32 *)(h + offset));
+			offset += 4;
+		}
+	}
+
+	gre_proto = *(__be16 *)(h + 2);
+
+	tunnel = ip6gre_tunnel_lookup(skb->dev,
+					  &ipv6h->saddr, &ipv6h->daddr, key,
+					  gre_proto);
+	if (tunnel) {
+		struct pcpu_tstats *tstats;
+
+		if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb))
+			goto drop;
+
+		if (!ip6_tnl_rcv_ctl(tunnel, &ipv6h->daddr, &ipv6h->saddr)) {
+			tunnel->dev->stats.rx_dropped++;
+			goto drop;
+		}
+
+		secpath_reset(skb);
+
+		skb->protocol = gre_proto;
+		/* WCCP version 1 and 2 protocol decoding.
+		 * - Change protocol to IP
+		 * - When dealing with WCCPv2, Skip extra 4 bytes in GRE header
+		 */
+		if (flags == 0 && gre_proto == htons(ETH_P_WCCP)) {
+			skb->protocol = htons(ETH_P_IP);
+			if ((*(h + offset) & 0xF0) != 0x40)
+				offset += 4;
+		}
+
+		skb->mac_header = skb->network_header;
+		__pskb_pull(skb, offset);
+		skb_postpull_rcsum(skb, skb_transport_header(skb), offset);
+		skb->pkt_type = PACKET_HOST;
+
+		if (((flags&GRE_CSUM) && csum) ||
+		    (!(flags&GRE_CSUM) && tunnel->parms.i_flags&GRE_CSUM)) {
+			tunnel->dev->stats.rx_crc_errors++;
+			tunnel->dev->stats.rx_errors++;
+			goto drop;
+		}
+		if (tunnel->parms.i_flags&GRE_SEQ) {
+			if (!(flags&GRE_SEQ) ||
+			    (tunnel->i_seqno &&
+					(s32)(seqno - tunnel->i_seqno) < 0)) {
+				tunnel->dev->stats.rx_fifo_errors++;
+				tunnel->dev->stats.rx_errors++;
+				goto drop;
+			}
+			tunnel->i_seqno = seqno + 1;
+		}
+
+		/* Warning: All skb pointers will be invalidated! */
+		if (tunnel->dev->type == ARPHRD_ETHER) {
+			if (!pskb_may_pull(skb, ETH_HLEN)) {
+				tunnel->dev->stats.rx_length_errors++;
+				tunnel->dev->stats.rx_errors++;
+				goto drop;
+			}
+
+			ipv6h = ipv6_hdr(skb);
+			skb->protocol = eth_type_trans(skb, tunnel->dev);
+			skb_postpull_rcsum(skb, eth_hdr(skb), ETH_HLEN);
+		}
+
+		__skb_tunnel_rx(skb, tunnel->dev);
+
+		skb_reset_network_header(skb);
+
+		err = IP6_ECN_decapsulate(ipv6h, skb);
+		if (unlikely(err)) {
+			if (log_ecn_error)
+				net_info_ratelimited("non-ECT from %pI6 with dsfield=%#x\n",
+						     &ipv6h->saddr,
+						     ipv6_get_dsfield(ipv6h));
+			if (err > 1) {
+				++tunnel->dev->stats.rx_frame_errors;
+				++tunnel->dev->stats.rx_errors;
+				goto drop;
+			}
+		}
+
+		tstats = this_cpu_ptr(tunnel->dev->tstats);
+		u64_stats_update_begin(&tstats->syncp);
+		tstats->rx_packets++;
+		tstats->rx_bytes += skb->len;
+		u64_stats_update_end(&tstats->syncp);
+
+		netif_rx(skb);
+
+		return 0;
+	}
+	icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_PORT_UNREACH, 0);
+
+drop:
+	kfree_skb(skb);
+	return 0;
+}
+
+struct ipv6_tel_txoption {
+	struct ipv6_txoptions ops;
+	__u8 dst_opt[8];
+};
+
+static void init_tel_txopt(struct ipv6_tel_txoption *opt, __u8 encap_limit)
+{
+	memset(opt, 0, sizeof(struct ipv6_tel_txoption));
+
+	opt->dst_opt[2] = IPV6_TLV_TNL_ENCAP_LIMIT;
+	opt->dst_opt[3] = 1;
+	opt->dst_opt[4] = encap_limit;
+	opt->dst_opt[5] = IPV6_TLV_PADN;
+	opt->dst_opt[6] = 1;
+
+	opt->ops.dst0opt = (struct ipv6_opt_hdr *) opt->dst_opt;
+	opt->ops.opt_nflen = 8;
+}
+
+static netdev_tx_t ip6gre_xmit2(struct sk_buff *skb,
+			 struct net_device *dev,
+			 __u8 dsfield,
+			 struct flowi6 *fl6,
+			 int encap_limit,
+			 __u32 *pmtu)
+{
+	struct net *net = dev_net(dev);
+	struct ip6_tnl *tunnel = netdev_priv(dev);
+	struct net_device *tdev;    /* Device to other host */
+	struct ipv6hdr  *ipv6h;     /* Our new IP header */
+	unsigned int max_headroom;  /* The extra header space needed */
+	int    gre_hlen;
+	struct ipv6_tel_txoption opt;
+	int    mtu;
+	struct dst_entry *dst = NULL, *ndst = NULL;
+	struct net_device_stats *stats = &tunnel->dev->stats;
+	int err = -1;
+	u8 proto;
+	int pkt_len;
+	struct sk_buff *new_skb;
+
+	if (dev->type == ARPHRD_ETHER)
+		IPCB(skb)->flags = 0;
+
+	if (dev->header_ops && dev->type == ARPHRD_IP6GRE) {
+		gre_hlen = 0;
+		ipv6h = (struct ipv6hdr *)skb->data;
+		fl6->daddr = ipv6h->daddr;
+	} else {
+		gre_hlen = tunnel->hlen;
+		fl6->daddr = tunnel->parms.raddr;
+	}
+
+	if (!fl6->flowi6_mark)
+		dst = ip6_tnl_dst_check(tunnel);
+
+	if (!dst) {
+		ndst = ip6_route_output(net, NULL, fl6);
+
+		if (ndst->error)
+			goto tx_err_link_failure;
+		ndst = xfrm_lookup(net, ndst, flowi6_to_flowi(fl6), NULL, 0);
+		if (IS_ERR(ndst)) {
+			err = PTR_ERR(ndst);
+			ndst = NULL;
+			goto tx_err_link_failure;
+		}
+		dst = ndst;
+	}
+
+	tdev = dst->dev;
+
+	if (tdev == dev) {
+		stats->collisions++;
+		net_warn_ratelimited("%s: Local routing loop detected!\n",
+				     tunnel->parms.name);
+		goto tx_err_dst_release;
+	}
+
+	mtu = dst_mtu(dst) - sizeof(*ipv6h);
+	if (encap_limit >= 0) {
+		max_headroom += 8;
+		mtu -= 8;
+	}
+	if (mtu < IPV6_MIN_MTU)
+		mtu = IPV6_MIN_MTU;
+	if (skb_dst(skb))
+		skb_dst(skb)->ops->update_pmtu(skb_dst(skb), NULL, skb, mtu);
+	if (skb->len > mtu) {
+		*pmtu = mtu;
+		err = -EMSGSIZE;
+		goto tx_err_dst_release;
+	}
+
+	if (tunnel->err_count > 0) {
+		if (time_before(jiffies,
+				tunnel->err_time + IP6TUNNEL_ERR_TIMEO)) {
+			tunnel->err_count--;
+
+			dst_link_failure(skb);
+		} else
+			tunnel->err_count = 0;
+	}
+
+	max_headroom = LL_RESERVED_SPACE(tdev) + gre_hlen + dst->header_len;
+
+	if (skb_headroom(skb) < max_headroom || skb_shared(skb) ||
+	    (skb_cloned(skb) && !skb_clone_writable(skb, 0))) {
+		new_skb = skb_realloc_headroom(skb, max_headroom);
+		if (max_headroom > dev->needed_headroom)
+			dev->needed_headroom = max_headroom;
+		if (!new_skb)
+			goto tx_err_dst_release;
+
+		if (skb->sk)
+			skb_set_owner_w(new_skb, skb->sk);
+		consume_skb(skb);
+		skb = new_skb;
+	}
+
+	skb_dst_drop(skb);
+
+	if (fl6->flowi6_mark) {
+		skb_dst_set(skb, dst);
+		ndst = NULL;
+	} else {
+		skb_dst_set_noref(skb, dst);
+	}
+
+	skb->transport_header = skb->network_header;
+
+	proto = NEXTHDR_GRE;
+	if (encap_limit >= 0) {
+		init_tel_txopt(&opt, encap_limit);
+		ipv6_push_nfrag_opts(skb, &opt.ops, &proto, NULL);
+	}
+
+	skb_push(skb, gre_hlen);
+	skb_reset_network_header(skb);
+
+	/*
+	 *	Push down and install the IP header.
+	 */
+	ipv6h = ipv6_hdr(skb);
+	*(__be32 *)ipv6h = fl6->flowlabel | htonl(0x60000000);
+	dsfield = INET_ECN_encapsulate(0, dsfield);
+	ipv6_change_dsfield(ipv6h, ~INET_ECN_MASK, dsfield);
+	ipv6h->hop_limit = tunnel->parms.hop_limit;
+	ipv6h->nexthdr = proto;
+	ipv6h->saddr = fl6->saddr;
+	ipv6h->daddr = fl6->daddr;
+
+	((__be16 *)(ipv6h + 1))[0] = tunnel->parms.o_flags;
+	((__be16 *)(ipv6h + 1))[1] = (dev->type == ARPHRD_ETHER) ?
+				   htons(ETH_P_TEB) : skb->protocol;
+
+	if (tunnel->parms.o_flags&(GRE_KEY|GRE_CSUM|GRE_SEQ)) {
+		__be32 *ptr = (__be32 *)(((u8 *)ipv6h) + tunnel->hlen - 4);
+
+		if (tunnel->parms.o_flags&GRE_SEQ) {
+			++tunnel->o_seqno;
+			*ptr = htonl(tunnel->o_seqno);
+			ptr--;
+		}
+		if (tunnel->parms.o_flags&GRE_KEY) {
+			*ptr = tunnel->parms.o_key;
+			ptr--;
+		}
+		if (tunnel->parms.o_flags&GRE_CSUM) {
+			*ptr = 0;
+			*(__sum16 *)ptr = ip_compute_csum((void *)(ipv6h+1),
+				skb->len - sizeof(struct ipv6hdr));
+		}
+	}
+
+	nf_reset(skb);
+	pkt_len = skb->len;
+	err = ip6_local_out(skb);
+
+	if (net_xmit_eval(err) == 0) {
+		struct pcpu_tstats *tstats = this_cpu_ptr(tunnel->dev->tstats);
+
+		tstats->tx_bytes += pkt_len;
+		tstats->tx_packets++;
+	} else {
+		stats->tx_errors++;
+		stats->tx_aborted_errors++;
+	}
+
+	if (ndst)
+		ip6_tnl_dst_store(tunnel, ndst);
+
+	return 0;
+tx_err_link_failure:
+	stats->tx_carrier_errors++;
+	dst_link_failure(skb);
+tx_err_dst_release:
+	dst_release(ndst);
+	return err;
+}
+
+static inline int ip6gre_xmit_ipv4(struct sk_buff *skb, struct net_device *dev)
+{
+	struct ip6_tnl *t = netdev_priv(dev);
+	const struct iphdr  *iph = ip_hdr(skb);
+	int encap_limit = -1;
+	struct flowi6 fl6;
+	__u8 dsfield;
+	__u32 mtu;
+	int err;
+
+	if (!(t->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT))
+		encap_limit = t->parms.encap_limit;
+
+	memcpy(&fl6, &t->fl.u.ip6, sizeof(fl6));
+	fl6.flowi6_proto = IPPROTO_IPIP;
+
+	dsfield = ipv4_get_dsfield(iph);
+
+	if (t->parms.flags & IP6_TNL_F_USE_ORIG_TCLASS)
+		fl6.flowlabel |= htonl((__u32)iph->tos << IPV6_TCLASS_SHIFT)
+					  & IPV6_TCLASS_MASK;
+	if (t->parms.flags & IP6_TNL_F_USE_ORIG_FWMARK)
+		fl6.flowi6_mark = skb->mark;
+
+	err = ip6gre_xmit2(skb, dev, dsfield, &fl6, encap_limit, &mtu);
+	if (err != 0) {
+		/* XXX: send ICMP error even if DF is not set. */
+		if (err == -EMSGSIZE)
+			icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED,
+				  htonl(mtu));
+		return -1;
+	}
+
+	return 0;
+}
+
+static inline int ip6gre_xmit_ipv6(struct sk_buff *skb, struct net_device *dev)
+{
+	struct ip6_tnl *t = netdev_priv(dev);
+	struct ipv6hdr *ipv6h = ipv6_hdr(skb);
+	int encap_limit = -1;
+	__u16 offset;
+	struct flowi6 fl6;
+	__u8 dsfield;
+	__u32 mtu;
+	int err;
+
+	if (ipv6_addr_equal(&t->parms.raddr, &ipv6h->saddr))
+		return -1;
+
+	offset = ip6_tnl_parse_tlv_enc_lim(skb, skb_network_header(skb));
+	if (offset > 0) {
+		struct ipv6_tlv_tnl_enc_lim *tel;
+		tel = (struct ipv6_tlv_tnl_enc_lim *)&skb_network_header(skb)[offset];
+		if (tel->encap_limit == 0) {
+			icmpv6_send(skb, ICMPV6_PARAMPROB,
+				    ICMPV6_HDR_FIELD, offset + 2);
+			return -1;
+		}
+		encap_limit = tel->encap_limit - 1;
+	} else if (!(t->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT))
+		encap_limit = t->parms.encap_limit;
+
+	memcpy(&fl6, &t->fl.u.ip6, sizeof(fl6));
+	fl6.flowi6_proto = IPPROTO_IPV6;
+
+	dsfield = ipv6_get_dsfield(ipv6h);
+	if (t->parms.flags & IP6_TNL_F_USE_ORIG_TCLASS)
+		fl6.flowlabel |= (*(__be32 *) ipv6h & IPV6_TCLASS_MASK);
+	if (t->parms.flags & IP6_TNL_F_USE_ORIG_FLOWLABEL)
+		fl6.flowlabel |= (*(__be32 *) ipv6h & IPV6_FLOWLABEL_MASK);
+	if (t->parms.flags & IP6_TNL_F_USE_ORIG_FWMARK)
+		fl6.flowi6_mark = skb->mark;
+
+	err = ip6gre_xmit2(skb, dev, dsfield, &fl6, encap_limit, &mtu);
+	if (err != 0) {
+		if (err == -EMSGSIZE)
+			icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu);
+		return -1;
+	}
+
+	return 0;
+}
+
+/**
+ * ip6_tnl_addr_conflict - compare packet addresses to tunnel's own
+ *   @t: the outgoing tunnel device
+ *   @hdr: IPv6 header from the incoming packet
+ *
+ * Description:
+ *   Avoid trivial tunneling loop by checking that tunnel exit-point
+ *   doesn't match source of incoming packet.
+ *
+ * Return:
+ *   1 if conflict,
+ *   0 else
+ **/
+
+static inline bool ip6gre_tnl_addr_conflict(const struct ip6_tnl *t,
+	const struct ipv6hdr *hdr)
+{
+	return ipv6_addr_equal(&t->parms.raddr, &hdr->saddr);
+}
+
+static int ip6gre_xmit_other(struct sk_buff *skb, struct net_device *dev)
+{
+	struct ip6_tnl *t = netdev_priv(dev);
+	int encap_limit = -1;
+	struct flowi6 fl6;
+	__u32 mtu;
+	int err;
+
+	if (!(t->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT))
+		encap_limit = t->parms.encap_limit;
+
+	memcpy(&fl6, &t->fl.u.ip6, sizeof(fl6));
+	fl6.flowi6_proto = skb->protocol;
+
+	err = ip6gre_xmit2(skb, dev, 0, &fl6, encap_limit, &mtu);
+
+	return err;
+}
+
+static netdev_tx_t ip6gre_tunnel_xmit(struct sk_buff *skb,
+	struct net_device *dev)
+{
+	struct ip6_tnl *t = netdev_priv(dev);
+	struct net_device_stats *stats = &t->dev->stats;
+	int ret;
+
+	if (!ip6_tnl_xmit_ctl(t))
+		return -1;
+
+	switch (skb->protocol) {
+	case htons(ETH_P_IP):
+		ret = ip6gre_xmit_ipv4(skb, dev);
+		break;
+	case htons(ETH_P_IPV6):
+		ret = ip6gre_xmit_ipv6(skb, dev);
+		break;
+	default:
+		ret = ip6gre_xmit_other(skb, dev);
+		break;
+	}
+
+	if (ret < 0)
+		goto tx_err;
+
+	return NETDEV_TX_OK;
+
+tx_err:
+	stats->tx_errors++;
+	stats->tx_dropped++;
+	kfree_skb(skb);
+	return NETDEV_TX_OK;
+}
+
+static void ip6gre_tnl_link_config(struct ip6_tnl *t, int set_mtu)
+{
+	struct net_device *dev = t->dev;
+	struct __ip6_tnl_parm *p = &t->parms;
+	struct flowi6 *fl6 = &t->fl.u.ip6;
+	int addend = sizeof(struct ipv6hdr) + 4;
+
+	if (dev->type != ARPHRD_ETHER) {
+		memcpy(dev->dev_addr, &p->laddr, sizeof(struct in6_addr));
+		memcpy(dev->broadcast, &p->raddr, sizeof(struct in6_addr));
+	}
+
+	/* Set up flowi template */
+	fl6->saddr = p->laddr;
+	fl6->daddr = p->raddr;
+	fl6->flowi6_oif = p->link;
+	fl6->flowlabel = 0;
+
+	if (!(p->flags&IP6_TNL_F_USE_ORIG_TCLASS))
+		fl6->flowlabel |= IPV6_TCLASS_MASK & p->flowinfo;
+	if (!(p->flags&IP6_TNL_F_USE_ORIG_FLOWLABEL))
+		fl6->flowlabel |= IPV6_FLOWLABEL_MASK & p->flowinfo;
+
+	p->flags &= ~(IP6_TNL_F_CAP_XMIT|IP6_TNL_F_CAP_RCV|IP6_TNL_F_CAP_PER_PACKET);
+	p->flags |= ip6_tnl_get_cap(t, &p->laddr, &p->raddr);
+
+	if (p->flags&IP6_TNL_F_CAP_XMIT &&
+			p->flags&IP6_TNL_F_CAP_RCV && dev->type != ARPHRD_ETHER)
+		dev->flags |= IFF_POINTOPOINT;
+	else
+		dev->flags &= ~IFF_POINTOPOINT;
+
+	dev->iflink = p->link;
+
+	/* Precalculate GRE options length */
+	if (t->parms.o_flags&(GRE_CSUM|GRE_KEY|GRE_SEQ)) {
+		if (t->parms.o_flags&GRE_CSUM)
+			addend += 4;
+		if (t->parms.o_flags&GRE_KEY)
+			addend += 4;
+		if (t->parms.o_flags&GRE_SEQ)
+			addend += 4;
+	}
+
+	if (p->flags & IP6_TNL_F_CAP_XMIT) {
+		int strict = (ipv6_addr_type(&p->raddr) &
+			      (IPV6_ADDR_MULTICAST|IPV6_ADDR_LINKLOCAL));
+
+		struct rt6_info *rt = rt6_lookup(dev_net(dev),
+						 &p->raddr, &p->laddr,
+						 p->link, strict);
+
+		if (rt == NULL)
+			return;
+
+		if (rt->dst.dev) {
+			dev->hard_header_len = rt->dst.dev->hard_header_len + addend;
+
+			if (set_mtu) {
+				dev->mtu = rt->dst.dev->mtu - addend;
+				if (!(t->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT))
+					dev->mtu -= 8;
+
+				if (dev->mtu < IPV6_MIN_MTU)
+					dev->mtu = IPV6_MIN_MTU;
+			}
+		}
+		dst_release(&rt->dst);
+	}
+
+	t->hlen = addend;
+}
+
+static int ip6gre_tnl_change(struct ip6_tnl *t,
+	const struct __ip6_tnl_parm *p, int set_mtu)
+{
+	t->parms.laddr = p->laddr;
+	t->parms.raddr = p->raddr;
+	t->parms.flags = p->flags;
+	t->parms.hop_limit = p->hop_limit;
+	t->parms.encap_limit = p->encap_limit;
+	t->parms.flowinfo = p->flowinfo;
+	t->parms.link = p->link;
+	t->parms.proto = p->proto;
+	t->parms.i_key = p->i_key;
+	t->parms.o_key = p->o_key;
+	t->parms.i_flags = p->i_flags;
+	t->parms.o_flags = p->o_flags;
+	ip6_tnl_dst_reset(t);
+	ip6gre_tnl_link_config(t, set_mtu);
+	return 0;
+}
+
+static void ip6gre_tnl_parm_from_user(struct __ip6_tnl_parm *p,
+	const struct ip6_tnl_parm2 *u)
+{
+	p->laddr = u->laddr;
+	p->raddr = u->raddr;
+	p->flags = u->flags;
+	p->hop_limit = u->hop_limit;
+	p->encap_limit = u->encap_limit;
+	p->flowinfo = u->flowinfo;
+	p->link = u->link;
+	p->i_key = u->i_key;
+	p->o_key = u->o_key;
+	p->i_flags = u->i_flags;
+	p->o_flags = u->o_flags;
+	memcpy(p->name, u->name, sizeof(u->name));
+}
+
+static void ip6gre_tnl_parm_to_user(struct ip6_tnl_parm2 *u,
+	const struct __ip6_tnl_parm *p)
+{
+	u->proto = IPPROTO_GRE;
+	u->laddr = p->laddr;
+	u->raddr = p->raddr;
+	u->flags = p->flags;
+	u->hop_limit = p->hop_limit;
+	u->encap_limit = p->encap_limit;
+	u->flowinfo = p->flowinfo;
+	u->link = p->link;
+	u->i_key = p->i_key;
+	u->o_key = p->o_key;
+	u->i_flags = p->i_flags;
+	u->o_flags = p->o_flags;
+	memcpy(u->name, p->name, sizeof(u->name));
+}
+
+static int ip6gre_tunnel_ioctl(struct net_device *dev,
+	struct ifreq *ifr, int cmd)
+{
+	int err = 0;
+	struct ip6_tnl_parm2 p;
+	struct __ip6_tnl_parm p1;
+	struct ip6_tnl *t;
+	struct net *net = dev_net(dev);
+	struct ip6gre_net *ign = net_generic(net, ip6gre_net_id);
+
+	switch (cmd) {
+	case SIOCGETTUNNEL:
+		t = NULL;
+		if (dev == ign->fb_tunnel_dev) {
+			if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof(p))) {
+				err = -EFAULT;
+				break;
+			}
+			ip6gre_tnl_parm_from_user(&p1, &p);
+			t = ip6gre_tunnel_locate(net, &p1, 0);
+		}
+		if (t == NULL)
+			t = netdev_priv(dev);
+		ip6gre_tnl_parm_to_user(&p, &t->parms);
+		if (copy_to_user(ifr->ifr_ifru.ifru_data, &p, sizeof(p)))
+			err = -EFAULT;
+		break;
+
+	case SIOCADDTUNNEL:
+	case SIOCCHGTUNNEL:
+		err = -EPERM;
+		if (!capable(CAP_NET_ADMIN))
+			goto done;
+
+		err = -EFAULT;
+		if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof(p)))
+			goto done;
+
+		err = -EINVAL;
+		if ((p.i_flags|p.o_flags)&(GRE_VERSION|GRE_ROUTING))
+			goto done;
+
+		if (!(p.i_flags&GRE_KEY))
+			p.i_key = 0;
+		if (!(p.o_flags&GRE_KEY))
+			p.o_key = 0;
+
+		ip6gre_tnl_parm_from_user(&p1, &p);
+		t = ip6gre_tunnel_locate(net, &p1, cmd == SIOCADDTUNNEL);
+
+		if (dev != ign->fb_tunnel_dev && cmd == SIOCCHGTUNNEL) {
+			if (t != NULL) {
+				if (t->dev != dev) {
+					err = -EEXIST;
+					break;
+				}
+			} else {
+				t = netdev_priv(dev);
+
+				ip6gre_tunnel_unlink(ign, t);
+				synchronize_net();
+				ip6gre_tnl_change(t, &p1, 1);
+				ip6gre_tunnel_link(ign, t);
+				netdev_state_change(dev);
+			}
+		}
+
+		if (t) {
+			err = 0;
+
+			ip6gre_tnl_parm_to_user(&p, &t->parms);
+			if (copy_to_user(ifr->ifr_ifru.ifru_data, &p, sizeof(p)))
+				err = -EFAULT;
+		} else
+			err = (cmd == SIOCADDTUNNEL ? -ENOBUFS : -ENOENT);
+		break;
+
+	case SIOCDELTUNNEL:
+		err = -EPERM;
+		if (!capable(CAP_NET_ADMIN))
+			goto done;
+
+		if (dev == ign->fb_tunnel_dev) {
+			err = -EFAULT;
+			if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof(p)))
+				goto done;
+			err = -ENOENT;
+			ip6gre_tnl_parm_from_user(&p1, &p);
+			t = ip6gre_tunnel_locate(net, &p1, 0);
+			if (t == NULL)
+				goto done;
+			err = -EPERM;
+			if (t == netdev_priv(ign->fb_tunnel_dev))
+				goto done;
+			dev = t->dev;
+		}
+		unregister_netdevice(dev);
+		err = 0;
+		break;
+
+	default:
+		err = -EINVAL;
+	}
+
+done:
+	return err;
+}
+
+static int ip6gre_tunnel_change_mtu(struct net_device *dev, int new_mtu)
+{
+	struct ip6_tnl *tunnel = netdev_priv(dev);
+	if (new_mtu < 68 ||
+	    new_mtu > 0xFFF8 - dev->hard_header_len - tunnel->hlen)
+		return -EINVAL;
+	dev->mtu = new_mtu;
+	return 0;
+}
+
+static int ip6gre_header(struct sk_buff *skb, struct net_device *dev,
+			unsigned short type,
+			const void *daddr, const void *saddr, unsigned int len)
+{
+	struct ip6_tnl *t = netdev_priv(dev);
+	struct ipv6hdr *ipv6h = (struct ipv6hdr *)skb_push(skb, t->hlen);
+	__be16 *p = (__be16 *)(ipv6h+1);
+
+	*(__be32 *)ipv6h = t->fl.u.ip6.flowlabel | htonl(0x60000000);
+	ipv6h->hop_limit = t->parms.hop_limit;
+	ipv6h->nexthdr = NEXTHDR_GRE;
+	ipv6h->saddr = t->parms.laddr;
+	ipv6h->daddr = t->parms.raddr;
+
+	p[0]		= t->parms.o_flags;
+	p[1]		= htons(type);
+
+	/*
+	 *	Set the source hardware address.
+	 */
+
+	if (saddr)
+		memcpy(&ipv6h->saddr, saddr, sizeof(struct in6_addr));
+	if (daddr)
+		memcpy(&ipv6h->daddr, daddr, sizeof(struct in6_addr));
+	if (!ipv6_addr_any(&ipv6h->daddr))
+		return t->hlen;
+
+	return -t->hlen;
+}
+
+static const struct header_ops ip6gre_header_ops = {
+	.create	= ip6gre_header,
+};
+
+static const struct net_device_ops ip6gre_netdev_ops = {
+	.ndo_init		= ip6gre_tunnel_init,
+	.ndo_uninit		= ip6gre_tunnel_uninit,
+	.ndo_start_xmit		= ip6gre_tunnel_xmit,
+	.ndo_do_ioctl		= ip6gre_tunnel_ioctl,
+	.ndo_change_mtu		= ip6gre_tunnel_change_mtu,
+	.ndo_get_stats64	= ip6gre_get_stats64,
+};
+
+static void ip6gre_dev_free(struct net_device *dev)
+{
+	free_percpu(dev->tstats);
+	free_netdev(dev);
+}
+
+static void ip6gre_tunnel_setup(struct net_device *dev)
+{
+	struct ip6_tnl *t;
+
+	dev->netdev_ops = &ip6gre_netdev_ops;
+	dev->destructor = ip6gre_dev_free;
+
+	dev->type = ARPHRD_IP6GRE;
+	dev->hard_header_len = LL_MAX_HEADER + sizeof(struct ipv6hdr) + 4;
+	dev->mtu = ETH_DATA_LEN - sizeof(struct ipv6hdr) - 4;
+	t = netdev_priv(dev);
+	if (!(t->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT))
+		dev->mtu -= 8;
+	dev->flags |= IFF_NOARP;
+	dev->iflink = 0;
+	dev->addr_len = sizeof(struct in6_addr);
+	dev->features |= NETIF_F_NETNS_LOCAL;
+	dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
+}
+
+static int ip6gre_tunnel_init(struct net_device *dev)
+{
+	struct ip6_tnl *tunnel;
+
+	tunnel = netdev_priv(dev);
+
+	tunnel->dev = dev;
+	strcpy(tunnel->parms.name, dev->name);
+
+	memcpy(dev->dev_addr, &tunnel->parms.laddr, sizeof(struct in6_addr));
+	memcpy(dev->broadcast, &tunnel->parms.raddr, sizeof(struct in6_addr));
+
+	if (ipv6_addr_any(&tunnel->parms.raddr))
+		dev->header_ops = &ip6gre_header_ops;
+
+	dev->tstats = alloc_percpu(struct pcpu_tstats);
+	if (!dev->tstats)
+		return -ENOMEM;
+
+	return 0;
+}
+
+static void ip6gre_fb_tunnel_init(struct net_device *dev)
+{
+	struct ip6_tnl *tunnel = netdev_priv(dev);
+
+	tunnel->dev = dev;
+	strcpy(tunnel->parms.name, dev->name);
+
+	tunnel->hlen		= sizeof(struct ipv6hdr) + 4;
+
+	dev_hold(dev);
+}
+
+
+static struct inet6_protocol ip6gre_protocol __read_mostly = {
+	.handler     = ip6gre_rcv,
+	.err_handler = ip6gre_err,
+	.flags       = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
+};
+
+static void ip6gre_destroy_tunnels(struct ip6gre_net *ign,
+	struct list_head *head)
+{
+	int prio;
+
+	for (prio = 0; prio < 4; prio++) {
+		int h;
+		for (h = 0; h < HASH_SIZE; h++) {
+			struct ip6_tnl *t;
+
+			t = rtnl_dereference(ign->tunnels[prio][h]);
+
+			while (t != NULL) {
+				unregister_netdevice_queue(t->dev, head);
+				t = rtnl_dereference(t->next);
+			}
+		}
+	}
+}
+
+static int __net_init ip6gre_init_net(struct net *net)
+{
+	struct ip6gre_net *ign = net_generic(net, ip6gre_net_id);
+	int err;
+
+	ign->fb_tunnel_dev = alloc_netdev(sizeof(struct ip6_tnl), "ip6gre0",
+					   ip6gre_tunnel_setup);
+	if (!ign->fb_tunnel_dev) {
+		err = -ENOMEM;
+		goto err_alloc_dev;
+	}
+	dev_net_set(ign->fb_tunnel_dev, net);
+
+	ip6gre_fb_tunnel_init(ign->fb_tunnel_dev);
+	ign->fb_tunnel_dev->rtnl_link_ops = &ip6gre_link_ops;
+
+	err = register_netdev(ign->fb_tunnel_dev);
+	if (err)
+		goto err_reg_dev;
+
+	rcu_assign_pointer(ign->tunnels_wc[0],
+			   netdev_priv(ign->fb_tunnel_dev));
+	return 0;
+
+err_reg_dev:
+	ip6gre_dev_free(ign->fb_tunnel_dev);
+err_alloc_dev:
+	return err;
+}
+
+static void __net_exit ip6gre_exit_net(struct net *net)
+{
+	struct ip6gre_net *ign;
+	LIST_HEAD(list);
+
+	ign = net_generic(net, ip6gre_net_id);
+	rtnl_lock();
+	ip6gre_destroy_tunnels(ign, &list);
+	unregister_netdevice_many(&list);
+	rtnl_unlock();
+}
+
+static struct pernet_operations ip6gre_net_ops = {
+	.init = ip6gre_init_net,
+	.exit = ip6gre_exit_net,
+	.id   = &ip6gre_net_id,
+	.size = sizeof(struct ip6gre_net),
+};
+
+static int ip6gre_tunnel_validate(struct nlattr *tb[], struct nlattr *data[])
+{
+	__be16 flags;
+
+	if (!data)
+		return 0;
+
+	flags = 0;
+	if (data[IFLA_GRE_IFLAGS])
+		flags |= nla_get_be16(data[IFLA_GRE_IFLAGS]);
+	if (data[IFLA_GRE_OFLAGS])
+		flags |= nla_get_be16(data[IFLA_GRE_OFLAGS]);
+	if (flags & (GRE_VERSION|GRE_ROUTING))
+		return -EINVAL;
+
+	return 0;
+}
+
+static int ip6gre_tap_validate(struct nlattr *tb[], struct nlattr *data[])
+{
+	struct in6_addr daddr;
+
+	if (tb[IFLA_ADDRESS]) {
+		if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
+			return -EINVAL;
+		if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
+			return -EADDRNOTAVAIL;
+	}
+
+	if (!data)
+		goto out;
+
+	if (data[IFLA_GRE_REMOTE]) {
+		nla_memcpy(&daddr, data[IFLA_GRE_REMOTE], sizeof(struct in6_addr));
+		if (ipv6_addr_any(&daddr))
+			return -EINVAL;
+	}
+
+out:
+	return ip6gre_tunnel_validate(tb, data);
+}
+
+
+static void ip6gre_netlink_parms(struct nlattr *data[],
+				struct __ip6_tnl_parm *parms)
+{
+	memset(parms, 0, sizeof(*parms));
+
+	if (!data)
+		return;
+
+	if (data[IFLA_GRE_LINK])
+		parms->link = nla_get_u32(data[IFLA_GRE_LINK]);
+
+	if (data[IFLA_GRE_IFLAGS])
+		parms->i_flags = nla_get_be16(data[IFLA_GRE_IFLAGS]);
+
+	if (data[IFLA_GRE_OFLAGS])
+		parms->o_flags = nla_get_be16(data[IFLA_GRE_OFLAGS]);
+
+	if (data[IFLA_GRE_IKEY])
+		parms->i_key = nla_get_be32(data[IFLA_GRE_IKEY]);
+
+	if (data[IFLA_GRE_OKEY])
+		parms->o_key = nla_get_be32(data[IFLA_GRE_OKEY]);
+
+	if (data[IFLA_GRE_LOCAL])
+		nla_memcpy(&parms->laddr, data[IFLA_GRE_LOCAL], sizeof(struct in6_addr));
+
+	if (data[IFLA_GRE_REMOTE])
+		nla_memcpy(&parms->raddr, data[IFLA_GRE_REMOTE], sizeof(struct in6_addr));
+
+	if (data[IFLA_GRE_TTL])
+		parms->hop_limit = nla_get_u8(data[IFLA_GRE_TTL]);
+
+	if (data[IFLA_GRE_ENCAP_LIMIT])
+		parms->encap_limit = nla_get_u8(data[IFLA_GRE_ENCAP_LIMIT]);
+
+	if (data[IFLA_GRE_FLOWINFO])
+		parms->flowinfo = nla_get_u32(data[IFLA_GRE_FLOWINFO]);
+
+	if (data[IFLA_GRE_FLAGS])
+		parms->flags = nla_get_u32(data[IFLA_GRE_FLAGS]);
+}
+
+static int ip6gre_tap_init(struct net_device *dev)
+{
+	struct ip6_tnl *tunnel;
+
+	tunnel = netdev_priv(dev);
+
+	tunnel->dev = dev;
+	strcpy(tunnel->parms.name, dev->name);
+
+	ip6gre_tnl_link_config(tunnel, 1);
+
+	dev->tstats = alloc_percpu(struct pcpu_tstats);
+	if (!dev->tstats)
+		return -ENOMEM;
+
+	return 0;
+}
+
+static const struct net_device_ops ip6gre_tap_netdev_ops = {
+	.ndo_init = ip6gre_tap_init,
+	.ndo_uninit = ip6gre_tunnel_uninit,
+	.ndo_start_xmit = ip6gre_tunnel_xmit,
+	.ndo_set_mac_address = eth_mac_addr,
+	.ndo_validate_addr = eth_validate_addr,
+	.ndo_change_mtu = ip6gre_tunnel_change_mtu,
+	.ndo_get_stats64 = ip6gre_get_stats64,
+};
+
+static void ip6gre_tap_setup(struct net_device *dev)
+{
+
+	ether_setup(dev);
+
+	dev->netdev_ops = &ip6gre_tap_netdev_ops;
+	dev->destructor = ip6gre_dev_free;
+
+	dev->iflink = 0;
+	dev->features |= NETIF_F_NETNS_LOCAL;
+}
+
+static int ip6gre_newlink(struct net *src_net, struct net_device *dev,
+	struct nlattr *tb[], struct nlattr *data[])
+{
+	struct ip6_tnl *nt;
+	struct net *net = dev_net(dev);
+	struct ip6gre_net *ign = net_generic(net, ip6gre_net_id);
+	int err;
+
+	nt = netdev_priv(dev);
+	ip6gre_netlink_parms(data, &nt->parms);
+
+	if (ip6gre_tunnel_find(net, &nt->parms, dev->type))
+		return -EEXIST;
+
+	if (dev->type == ARPHRD_ETHER && !tb[IFLA_ADDRESS])
+		eth_hw_addr_random(dev);
+
+	nt->dev = dev;
+	ip6gre_tnl_link_config(nt, !tb[IFLA_MTU]);
+
+	/* Can use a lockless transmit, unless we generate output sequences */
+	if (!(nt->parms.o_flags & GRE_SEQ))
+		dev->features |= NETIF_F_LLTX;
+
+	err = register_netdevice(dev);
+	if (err)
+		goto out;
+
+	dev_hold(dev);
+	ip6gre_tunnel_link(ign, nt);
+
+out:
+	return err;
+}
+
+static int ip6gre_changelink(struct net_device *dev, struct nlattr *tb[],
+			    struct nlattr *data[])
+{
+	struct ip6_tnl *t, *nt;
+	struct net *net = dev_net(dev);
+	struct ip6gre_net *ign = net_generic(net, ip6gre_net_id);
+	struct __ip6_tnl_parm p;
+
+	if (dev == ign->fb_tunnel_dev)
+		return -EINVAL;
+
+	nt = netdev_priv(dev);
+	ip6gre_netlink_parms(data, &p);
+
+	t = ip6gre_tunnel_locate(net, &p, 0);
+
+	if (t) {
+		if (t->dev != dev)
+			return -EEXIST;
+	} else {
+		t = nt;
+
+		ip6gre_tunnel_unlink(ign, t);
+		ip6gre_tnl_change(t, &p, !tb[IFLA_MTU]);
+		ip6gre_tunnel_link(ign, t);
+		netdev_state_change(dev);
+	}
+
+	return 0;
+}
+
+static size_t ip6gre_get_size(const struct net_device *dev)
+{
+	return
+		/* IFLA_GRE_LINK */
+		nla_total_size(4) +
+		/* IFLA_GRE_IFLAGS */
+		nla_total_size(2) +
+		/* IFLA_GRE_OFLAGS */
+		nla_total_size(2) +
+		/* IFLA_GRE_IKEY */
+		nla_total_size(4) +
+		/* IFLA_GRE_OKEY */
+		nla_total_size(4) +
+		/* IFLA_GRE_LOCAL */
+		nla_total_size(4) +
+		/* IFLA_GRE_REMOTE */
+		nla_total_size(4) +
+		/* IFLA_GRE_TTL */
+		nla_total_size(1) +
+		/* IFLA_GRE_TOS */
+		nla_total_size(1) +
+		/* IFLA_GRE_ENCAP_LIMIT */
+		nla_total_size(1) +
+		/* IFLA_GRE_FLOWINFO */
+		nla_total_size(4) +
+		/* IFLA_GRE_FLAGS */
+		nla_total_size(4) +
+		0;
+}
+
+static int ip6gre_fill_info(struct sk_buff *skb, const struct net_device *dev)
+{
+	struct ip6_tnl *t = netdev_priv(dev);
+	struct __ip6_tnl_parm *p = &t->parms;
+
+	if (nla_put_u32(skb, IFLA_GRE_LINK, p->link) ||
+	    nla_put_be16(skb, IFLA_GRE_IFLAGS, p->i_flags) ||
+	    nla_put_be16(skb, IFLA_GRE_OFLAGS, p->o_flags) ||
+	    nla_put_be32(skb, IFLA_GRE_IKEY, p->i_key) ||
+	    nla_put_be32(skb, IFLA_GRE_OKEY, p->o_key) ||
+	    nla_put(skb, IFLA_GRE_LOCAL, sizeof(struct in6_addr), &p->raddr) ||
+	    nla_put(skb, IFLA_GRE_REMOTE, sizeof(struct in6_addr), &p->laddr) ||
+	    nla_put_u8(skb, IFLA_GRE_TTL, p->hop_limit) ||
+	    /*nla_put_u8(skb, IFLA_GRE_TOS, t->priority) ||*/
+	    nla_put_u8(skb, IFLA_GRE_ENCAP_LIMIT, p->encap_limit) ||
+	    nla_put_be32(skb, IFLA_GRE_FLOWINFO, p->flowinfo) ||
+	    nla_put_u32(skb, IFLA_GRE_FLAGS, p->flags))
+		goto nla_put_failure;
+	return 0;
+
+nla_put_failure:
+	return -EMSGSIZE;
+}
+
+static const struct nla_policy ip6gre_policy[IFLA_GRE_MAX + 1] = {
+	[IFLA_GRE_LINK]        = { .type = NLA_U32 },
+	[IFLA_GRE_IFLAGS]      = { .type = NLA_U16 },
+	[IFLA_GRE_OFLAGS]      = { .type = NLA_U16 },
+	[IFLA_GRE_IKEY]        = { .type = NLA_U32 },
+	[IFLA_GRE_OKEY]        = { .type = NLA_U32 },
+	[IFLA_GRE_LOCAL]       = { .len = FIELD_SIZEOF(struct ipv6hdr, saddr) },
+	[IFLA_GRE_REMOTE]      = { .len = FIELD_SIZEOF(struct ipv6hdr, daddr) },
+	[IFLA_GRE_TTL]         = { .type = NLA_U8 },
+	[IFLA_GRE_ENCAP_LIMIT] = { .type = NLA_U8 },
+	[IFLA_GRE_FLOWINFO]    = { .type = NLA_U32 },
+	[IFLA_GRE_FLAGS]       = { .type = NLA_U32 },
+};
+
+static struct rtnl_link_ops ip6gre_link_ops __read_mostly = {
+	.kind		= "ip6gre",
+	.maxtype	= IFLA_GRE_MAX,
+	.policy		= ip6gre_policy,
+	.priv_size	= sizeof(struct ip6_tnl),
+	.setup		= ip6gre_tunnel_setup,
+	.validate	= ip6gre_tunnel_validate,
+	.newlink	= ip6gre_newlink,
+	.changelink	= ip6gre_changelink,
+	.get_size	= ip6gre_get_size,
+	.fill_info	= ip6gre_fill_info,
+};
+
+static struct rtnl_link_ops ip6gre_tap_ops __read_mostly = {
+	.kind		= "ip6gretap",
+	.maxtype	= IFLA_GRE_MAX,
+	.policy		= ip6gre_policy,
+	.priv_size	= sizeof(struct ip6_tnl),
+	.setup		= ip6gre_tap_setup,
+	.validate	= ip6gre_tap_validate,
+	.newlink	= ip6gre_newlink,
+	.changelink	= ip6gre_changelink,
+	.get_size	= ip6gre_get_size,
+	.fill_info	= ip6gre_fill_info,
+};
+
+/*
+ *	And now the modules code and kernel interface.
+ */
+
+static int __init ip6gre_init(void)
+{
+	int err;
+
+	pr_info("GRE over IPv6 tunneling driver\n");
+
+	err = register_pernet_device(&ip6gre_net_ops);
+	if (err < 0)
+		return err;
+
+	err = inet6_add_protocol(&ip6gre_protocol, IPPROTO_GRE);
+	if (err < 0) {
+		pr_info("%s: can't add protocol\n", __func__);
+		goto add_proto_failed;
+	}
+
+	err = rtnl_link_register(&ip6gre_link_ops);
+	if (err < 0)
+		goto rtnl_link_failed;
+
+	err = rtnl_link_register(&ip6gre_tap_ops);
+	if (err < 0)
+		goto tap_ops_failed;
+
+out:
+	return err;
+
+tap_ops_failed:
+	rtnl_link_unregister(&ip6gre_link_ops);
+rtnl_link_failed:
+	inet6_del_protocol(&ip6gre_protocol, IPPROTO_GRE);
+add_proto_failed:
+	unregister_pernet_device(&ip6gre_net_ops);
+	goto out;
+}
+
+static void __exit ip6gre_fini(void)
+{
+	rtnl_link_unregister(&ip6gre_tap_ops);
+	rtnl_link_unregister(&ip6gre_link_ops);
+	inet6_del_protocol(&ip6gre_protocol, IPPROTO_GRE);
+	unregister_pernet_device(&ip6gre_net_ops);
+}
+
+module_init(ip6gre_init);
+module_exit(ip6gre_fini);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("D. Kozlov (xeb@mail.ru)");
+MODULE_DESCRIPTION("GRE over IPv6 tunneling device");
+MODULE_ALIAS_RTNL_LINK("ip6gre");
+MODULE_ALIAS_NETDEV("ip6gre0");
diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c
index 5ab923e51af..a52d864d562 100644
--- a/net/ipv6/ip6_input.c
+++ b/net/ipv6/ip6_input.c
@@ -47,9 +47,16 @@
 
 
 
-inline int ip6_rcv_finish( struct sk_buff *skb)
+int ip6_rcv_finish(struct sk_buff *skb)
 {
-	if (skb_dst(skb) == NULL)
+	if (sysctl_ip_early_demux && !skb_dst(skb)) {
+		const struct inet6_protocol *ipprot;
+
+		ipprot = rcu_dereference(inet6_protos[ipv6_hdr(skb)->nexthdr]);
+		if (ipprot && ipprot->early_demux)
+			ipprot->early_demux(skb);
+	}
+	if (!skb_dst(skb))
 		ip6_route_input(skb);
 
 	return dst_input(skb);
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 5b2d63ed793..aece3e792f8 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -123,16 +123,11 @@ static int ip6_finish_output2(struct sk_buff *skb)
 				skb->len);
 	}
 
-	rcu_read_lock();
 	rt = (struct rt6_info *) dst;
 	neigh = rt->n;
-	if (neigh) {
-		int res = dst_neigh_output(dst, neigh, skb);
+	if (neigh)
+		return dst_neigh_output(dst, neigh, skb);
 
-		rcu_read_unlock();
-		return res;
-	}
-	rcu_read_unlock();
 	IP6_INC_STATS_BH(dev_net(dst->dev),
 			 ip6_dst_idev(dst), IPSTATS_MIB_OUTNOROUTES);
 	kfree_skb(skb);
@@ -493,7 +488,8 @@ int ip6_forward(struct sk_buff *skb)
 	if (mtu < IPV6_MIN_MTU)
 		mtu = IPV6_MIN_MTU;
 
-	if (skb->len > mtu && !skb_is_gso(skb)) {
+	if ((!skb->local_df && skb->len > mtu && !skb_is_gso(skb)) ||
+	    (IP6CB(skb)->frag_max_size && IP6CB(skb)->frag_max_size > mtu)) {
 		/* Again, force OUTPUT device used as source address */
 		skb->dev = dst->dev;
 		icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu);
@@ -636,7 +632,9 @@ int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
 	/* We must not fragment if the socket is set to force MTU discovery
 	 * or if the skb it not generated by a local socket.
 	 */
-	if (unlikely(!skb->local_df && skb->len > mtu)) {
+	if (unlikely(!skb->local_df && skb->len > mtu) ||
+		     (IP6CB(skb)->frag_max_size &&
+		      IP6CB(skb)->frag_max_size > mtu)) {
 		if (skb->sk && dst_allfrag(skb_dst(skb)))
 			sk_nocaps_add(skb->sk, NETIF_F_GSO_MASK);
 
@@ -980,7 +978,6 @@ static int ip6_dst_lookup_tail(struct sock *sk,
 	 * dst entry and replace it instead with the
 	 * dst entry of the nexthop router
 	 */
-	rcu_read_lock();
 	rt = (struct rt6_info *) *dst;
 	n = rt->n;
 	if (n && !(n->nud_state & NUD_VALID)) {
@@ -988,7 +985,6 @@ static int ip6_dst_lookup_tail(struct sock *sk,
 		struct flowi6 fl_gw6;
 		int redirect;
 
-		rcu_read_unlock();
 		ifp = ipv6_get_ifaddr(net, &fl6->saddr,
 				      (*dst)->dev, 1);
 
@@ -1008,8 +1004,6 @@ static int ip6_dst_lookup_tail(struct sock *sk,
 			if ((err = (*dst)->error))
 				goto out_err_release;
 		}
-	} else {
-		rcu_read_unlock();
 	}
 #endif
 
@@ -1285,8 +1279,6 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
 		if (dst_allfrag(rt->dst.path))
 			cork->flags |= IPCORK_ALLFRAG;
 		cork->length = 0;
-		sk->sk_sndmsg_page = NULL;
-		sk->sk_sndmsg_off = 0;
 		exthdrlen = (opt ? opt->opt_flen : 0) - rt->rt6i_nfheader_len;
 		length += exthdrlen;
 		transhdrlen += exthdrlen;
@@ -1510,48 +1502,31 @@ alloc_new_skb:
 			}
 		} else {
 			int i = skb_shinfo(skb)->nr_frags;
-			skb_frag_t *frag = &skb_shinfo(skb)->frags[i-1];
-			struct page *page = sk->sk_sndmsg_page;
-			int off = sk->sk_sndmsg_off;
-			unsigned int left;
-
-			if (page && (left = PAGE_SIZE - off) > 0) {
-				if (copy >= left)
-					copy = left;
-				if (page != skb_frag_page(frag)) {
-					if (i == MAX_SKB_FRAGS) {
-						err = -EMSGSIZE;
-						goto error;
-					}
-					skb_fill_page_desc(skb, i, page, sk->sk_sndmsg_off, 0);
-					skb_frag_ref(skb, i);
-					frag = &skb_shinfo(skb)->frags[i];
-				}
-			} else if(i < MAX_SKB_FRAGS) {
-				if (copy > PAGE_SIZE)
-					copy = PAGE_SIZE;
-				page = alloc_pages(sk->sk_allocation, 0);
-				if (page == NULL) {
-					err = -ENOMEM;
-					goto error;
-				}
-				sk->sk_sndmsg_page = page;
-				sk->sk_sndmsg_off = 0;
+			struct page_frag *pfrag = sk_page_frag(sk);
 
-				skb_fill_page_desc(skb, i, page, 0, 0);
-				frag = &skb_shinfo(skb)->frags[i];
-			} else {
-				err = -EMSGSIZE;
+			err = -ENOMEM;
+			if (!sk_page_frag_refill(sk, pfrag))
 				goto error;
+
+			if (!skb_can_coalesce(skb, i, pfrag->page,
+					      pfrag->offset)) {
+				err = -EMSGSIZE;
+				if (i == MAX_SKB_FRAGS)
+					goto error;
+
+				__skb_fill_page_desc(skb, i, pfrag->page,
+						     pfrag->offset, 0);
+				skb_shinfo(skb)->nr_frags = ++i;
+				get_page(pfrag->page);
 			}
+			copy = min_t(int, copy, pfrag->size - pfrag->offset);
 			if (getfrag(from,
-				    skb_frag_address(frag) + skb_frag_size(frag),
-				    offset, copy, skb->len, skb) < 0) {
-				err = -EFAULT;
-				goto error;
-			}
-			sk->sk_sndmsg_off += copy;
-			skb_frag_size_add(frag, copy);
+				    page_address(pfrag->page) + pfrag->offset,
+				    offset, copy, skb->len, skb) < 0)
+				goto error_efault;
+
+			pfrag->offset += copy;
+			skb_frag_size_add(&skb_shinfo(skb)->frags[i - 1], copy);
 			skb->len += copy;
 			skb->data_len += copy;
 			skb->truesize += copy;
@@ -1560,7 +1535,11 @@ alloc_new_skb:
 		offset += copy;
 		length -= copy;
 	}
+
 	return 0;
+
+error_efault:
+	err = -EFAULT;
 error:
 	cork->length -= length;
 	IP6_INC_STATS(sock_net(sk), rt->rt6i_idev, IPSTATS_MIB_OUTDISCARDS);
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 9a1d5fe6aef..cb7e2ded6f0 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -126,7 +126,7 @@ static struct net_device_stats *ip6_get_stats(struct net_device *dev)
  * Locking : hash tables are protected by RCU and RTNL
  */
 
-static inline struct dst_entry *ip6_tnl_dst_check(struct ip6_tnl *t)
+struct dst_entry *ip6_tnl_dst_check(struct ip6_tnl *t)
 {
 	struct dst_entry *dst = t->dst_cache;
 
@@ -139,20 +139,23 @@ static inline struct dst_entry *ip6_tnl_dst_check(struct ip6_tnl *t)
 
 	return dst;
 }
+EXPORT_SYMBOL_GPL(ip6_tnl_dst_check);
 
-static inline void ip6_tnl_dst_reset(struct ip6_tnl *t)
+void ip6_tnl_dst_reset(struct ip6_tnl *t)
 {
 	dst_release(t->dst_cache);
 	t->dst_cache = NULL;
 }
+EXPORT_SYMBOL_GPL(ip6_tnl_dst_reset);
 
-static inline void ip6_tnl_dst_store(struct ip6_tnl *t, struct dst_entry *dst)
+void ip6_tnl_dst_store(struct ip6_tnl *t, struct dst_entry *dst)
 {
 	struct rt6_info *rt = (struct rt6_info *) dst;
 	t->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
 	dst_release(t->dst_cache);
 	t->dst_cache = dst;
 }
+EXPORT_SYMBOL_GPL(ip6_tnl_dst_store);
 
 /**
  * ip6_tnl_lookup - fetch tunnel matching the end-point addresses
@@ -200,7 +203,7 @@ ip6_tnl_lookup(struct net *net, const struct in6_addr *remote, const struct in6_
  **/
 
 static struct ip6_tnl __rcu **
-ip6_tnl_bucket(struct ip6_tnl_net *ip6n, const struct ip6_tnl_parm *p)
+ip6_tnl_bucket(struct ip6_tnl_net *ip6n, const struct __ip6_tnl_parm *p)
 {
 	const struct in6_addr *remote = &p->raddr;
 	const struct in6_addr *local = &p->laddr;
@@ -267,7 +270,7 @@ static void ip6_dev_free(struct net_device *dev)
  *   created tunnel or NULL
  **/
 
-static struct ip6_tnl *ip6_tnl_create(struct net *net, struct ip6_tnl_parm *p)
+static struct ip6_tnl *ip6_tnl_create(struct net *net, struct __ip6_tnl_parm *p)
 {
 	struct net_device *dev;
 	struct ip6_tnl *t;
@@ -322,7 +325,7 @@ failed:
  **/
 
 static struct ip6_tnl *ip6_tnl_locate(struct net *net,
-		struct ip6_tnl_parm *p, int create)
+		struct __ip6_tnl_parm *p, int create)
 {
 	const struct in6_addr *remote = &p->raddr;
 	const struct in6_addr *local = &p->laddr;
@@ -374,8 +377,7 @@ ip6_tnl_dev_uninit(struct net_device *dev)
  *   else index to encapsulation limit
  **/
 
-static __u16
-parse_tlv_tnl_enc_lim(struct sk_buff *skb, __u8 * raw)
+__u16 ip6_tnl_parse_tlv_enc_lim(struct sk_buff *skb, __u8 *raw)
 {
 	const struct ipv6hdr *ipv6h = (const struct ipv6hdr *) raw;
 	__u8 nexthdr = ipv6h->nexthdr;
@@ -425,6 +427,7 @@ parse_tlv_tnl_enc_lim(struct sk_buff *skb, __u8 * raw)
 	}
 	return 0;
 }
+EXPORT_SYMBOL(ip6_tnl_parse_tlv_enc_lim);
 
 /**
  * ip6_tnl_err - tunnel error handler
@@ -480,7 +483,7 @@ ip6_tnl_err(struct sk_buff *skb, __u8 ipproto, struct inet6_skb_parm *opt,
 	case ICMPV6_PARAMPROB:
 		teli = 0;
 		if ((*code) == ICMPV6_HDR_FIELD)
-			teli = parse_tlv_tnl_enc_lim(skb, skb->data);
+			teli = ip6_tnl_parse_tlv_enc_lim(skb, skb->data);
 
 		if (teli && teli == *info - 2) {
 			tel = (struct ipv6_tlv_tnl_enc_lim *) &skb->data[teli];
@@ -693,11 +696,11 @@ static void ip6ip6_dscp_ecn_decapsulate(const struct ip6_tnl *t,
 		IP6_ECN_set_ce(ipv6_hdr(skb));
 }
 
-static __u32 ip6_tnl_get_cap(struct ip6_tnl *t,
+__u32 ip6_tnl_get_cap(struct ip6_tnl *t,
 			     const struct in6_addr *laddr,
 			     const struct in6_addr *raddr)
 {
-	struct ip6_tnl_parm *p = &t->parms;
+	struct __ip6_tnl_parm *p = &t->parms;
 	int ltype = ipv6_addr_type(laddr);
 	int rtype = ipv6_addr_type(raddr);
 	__u32 flags = 0;
@@ -715,13 +718,14 @@ static __u32 ip6_tnl_get_cap(struct ip6_tnl *t,
 	}
 	return flags;
 }
+EXPORT_SYMBOL(ip6_tnl_get_cap);
 
 /* called with rcu_read_lock() */
-static inline int ip6_tnl_rcv_ctl(struct ip6_tnl *t,
+int ip6_tnl_rcv_ctl(struct ip6_tnl *t,
 				  const struct in6_addr *laddr,
 				  const struct in6_addr *raddr)
 {
-	struct ip6_tnl_parm *p = &t->parms;
+	struct __ip6_tnl_parm *p = &t->parms;
 	int ret = 0;
 	struct net *net = dev_net(t->dev);
 
@@ -740,6 +744,7 @@ static inline int ip6_tnl_rcv_ctl(struct ip6_tnl *t,
 	}
 	return ret;
 }
+EXPORT_SYMBOL_GPL(ip6_tnl_rcv_ctl);
 
 /**
  * ip6_tnl_rcv - decapsulate IPv6 packet and retransmit it locally
@@ -859,9 +864,9 @@ ip6_tnl_addr_conflict(const struct ip6_tnl *t, const struct ipv6hdr *hdr)
 	return ipv6_addr_equal(&t->parms.raddr, &hdr->saddr);
 }
 
-static inline int ip6_tnl_xmit_ctl(struct ip6_tnl *t)
+int ip6_tnl_xmit_ctl(struct ip6_tnl *t)
 {
-	struct ip6_tnl_parm *p = &t->parms;
+	struct __ip6_tnl_parm *p = &t->parms;
 	int ret = 0;
 	struct net *net = dev_net(t->dev);
 
@@ -885,6 +890,8 @@ static inline int ip6_tnl_xmit_ctl(struct ip6_tnl *t)
 	}
 	return ret;
 }
+EXPORT_SYMBOL_GPL(ip6_tnl_xmit_ctl);
+
 /**
  * ip6_tnl_xmit2 - encapsulate packet and send
  *   @skb: the outgoing socket buffer
@@ -1085,7 +1092,7 @@ ip6ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
 	    !ip6_tnl_xmit_ctl(t) || ip6_tnl_addr_conflict(t, ipv6h))
 		return -1;
 
-	offset = parse_tlv_tnl_enc_lim(skb, skb_network_header(skb));
+	offset = ip6_tnl_parse_tlv_enc_lim(skb, skb_network_header(skb));
 	if (offset > 0) {
 		struct ipv6_tlv_tnl_enc_lim *tel;
 		tel = (struct ipv6_tlv_tnl_enc_lim *)&skb_network_header(skb)[offset];
@@ -1152,7 +1159,7 @@ tx_err:
 static void ip6_tnl_link_config(struct ip6_tnl *t)
 {
 	struct net_device *dev = t->dev;
-	struct ip6_tnl_parm *p = &t->parms;
+	struct __ip6_tnl_parm *p = &t->parms;
 	struct flowi6 *fl6 = &t->fl.u.ip6;
 
 	memcpy(dev->dev_addr, &p->laddr, sizeof(struct in6_addr));
@@ -1215,7 +1222,7 @@ static void ip6_tnl_link_config(struct ip6_tnl *t)
  **/
 
 static int
-ip6_tnl_change(struct ip6_tnl *t, struct ip6_tnl_parm *p)
+ip6_tnl_change(struct ip6_tnl *t, const struct __ip6_tnl_parm *p)
 {
 	t->parms.laddr = p->laddr;
 	t->parms.raddr = p->raddr;
@@ -1230,6 +1237,34 @@ ip6_tnl_change(struct ip6_tnl *t, struct ip6_tnl_parm *p)
 	return 0;
 }
 
+static void
+ip6_tnl_parm_from_user(struct __ip6_tnl_parm *p, const struct ip6_tnl_parm *u)
+{
+	p->laddr = u->laddr;
+	p->raddr = u->raddr;
+	p->flags = u->flags;
+	p->hop_limit = u->hop_limit;
+	p->encap_limit = u->encap_limit;
+	p->flowinfo = u->flowinfo;
+	p->link = u->link;
+	p->proto = u->proto;
+	memcpy(p->name, u->name, sizeof(u->name));
+}
+
+static void
+ip6_tnl_parm_to_user(struct ip6_tnl_parm *u, const struct __ip6_tnl_parm *p)
+{
+	u->laddr = p->laddr;
+	u->raddr = p->raddr;
+	u->flags = p->flags;
+	u->hop_limit = p->hop_limit;
+	u->encap_limit = p->encap_limit;
+	u->flowinfo = p->flowinfo;
+	u->link = p->link;
+	u->proto = p->proto;
+	memcpy(u->name, p->name, sizeof(u->name));
+}
+
 /**
  * ip6_tnl_ioctl - configure ipv6 tunnels from userspace
  *   @dev: virtual device associated with tunnel
@@ -1263,6 +1298,7 @@ ip6_tnl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 {
 	int err = 0;
 	struct ip6_tnl_parm p;
+	struct __ip6_tnl_parm p1;
 	struct ip6_tnl *t = NULL;
 	struct net *net = dev_net(dev);
 	struct ip6_tnl_net *ip6n = net_generic(net, ip6_tnl_net_id);
@@ -1274,11 +1310,14 @@ ip6_tnl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 				err = -EFAULT;
 				break;
 			}
-			t = ip6_tnl_locate(net, &p, 0);
+			ip6_tnl_parm_from_user(&p1, &p);
+			t = ip6_tnl_locate(net, &p1, 0);
+		} else {
+			memset(&p, 0, sizeof(p));
 		}
 		if (t == NULL)
 			t = netdev_priv(dev);
-		memcpy(&p, &t->parms, sizeof (p));
+		ip6_tnl_parm_to_user(&p, &t->parms);
 		if (copy_to_user(ifr->ifr_ifru.ifru_data, &p, sizeof (p))) {
 			err = -EFAULT;
 		}
@@ -1295,7 +1334,8 @@ ip6_tnl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 		if (p.proto != IPPROTO_IPV6 && p.proto != IPPROTO_IPIP &&
 		    p.proto != 0)
 			break;
-		t = ip6_tnl_locate(net, &p, cmd == SIOCADDTUNNEL);
+		ip6_tnl_parm_from_user(&p1, &p);
+		t = ip6_tnl_locate(net, &p1, cmd == SIOCADDTUNNEL);
 		if (dev != ip6n->fb_tnl_dev && cmd == SIOCCHGTUNNEL) {
 			if (t != NULL) {
 				if (t->dev != dev) {
@@ -1307,13 +1347,14 @@ ip6_tnl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 
 			ip6_tnl_unlink(ip6n, t);
 			synchronize_net();
-			err = ip6_tnl_change(t, &p);
+			err = ip6_tnl_change(t, &p1);
 			ip6_tnl_link(ip6n, t);
 			netdev_state_change(dev);
 		}
 		if (t) {
 			err = 0;
-			if (copy_to_user(ifr->ifr_ifru.ifru_data, &t->parms, sizeof (p)))
+			ip6_tnl_parm_to_user(&p, &t->parms);
+			if (copy_to_user(ifr->ifr_ifru.ifru_data, &p, sizeof(p)))
 				err = -EFAULT;
 
 		} else
@@ -1329,7 +1370,9 @@ ip6_tnl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 			if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof (p)))
 				break;
 			err = -ENOENT;
-			if ((t = ip6_tnl_locate(net, &p, 0)) == NULL)
+			ip6_tnl_parm_from_user(&p1, &p);
+			t = ip6_tnl_locate(net, &p1, 0);
+			if (t == NULL)
 				break;
 			err = -EPERM;
 			if (t->dev == ip6n->fb_tnl_dev)
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index 4532973f0dd..08ea3f0b6e5 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -838,7 +838,7 @@ static void ip6mr_destroy_unres(struct mr6_table *mrt, struct mfc6_cache *c)
 			nlh->nlmsg_len = NLMSG_LENGTH(sizeof(struct nlmsgerr));
 			skb_trim(skb, nlh->nlmsg_len);
 			((struct nlmsgerr *)NLMSG_DATA(nlh))->error = -ETIMEDOUT;
-			rtnl_unicast(skb, net, NETLINK_CB(skb).pid);
+			rtnl_unicast(skb, net, NETLINK_CB(skb).portid);
 		} else
 			kfree_skb(skb);
 	}
@@ -1052,7 +1052,7 @@ static void ip6mr_cache_resolve(struct net *net, struct mr6_table *mrt,
 				skb_trim(skb, nlh->nlmsg_len);
 				((struct nlmsgerr *)NLMSG_DATA(nlh))->error = -EMSGSIZE;
 			}
-			rtnl_unicast(skb, net, NETLINK_CB(skb).pid);
+			rtnl_unicast(skb, net, NETLINK_CB(skb).portid);
 		} else
 			ip6_mr_forward(net, mrt, skb, c);
 	}
@@ -2202,12 +2202,12 @@ int ip6mr_get_route(struct net *net,
 }
 
 static int ip6mr_fill_mroute(struct mr6_table *mrt, struct sk_buff *skb,
-			     u32 pid, u32 seq, struct mfc6_cache *c)
+			     u32 portid, u32 seq, struct mfc6_cache *c)
 {
 	struct nlmsghdr *nlh;
 	struct rtmsg *rtm;
 
-	nlh = nlmsg_put(skb, pid, seq, RTM_NEWROUTE, sizeof(*rtm), NLM_F_MULTI);
+	nlh = nlmsg_put(skb, portid, seq, RTM_NEWROUTE, sizeof(*rtm), NLM_F_MULTI);
 	if (nlh == NULL)
 		return -EMSGSIZE;
 
@@ -2260,7 +2260,7 @@ static int ip6mr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb)
 				if (e < s_e)
 					goto next_entry;
 				if (ip6mr_fill_mroute(mrt, skb,
-						      NETLINK_CB(cb->skb).pid,
+						      NETLINK_CB(cb->skb).portid,
 						      cb->nlh->nlmsg_seq,
 						      mfc) < 0)
 					goto done;
diff --git a/net/ipv6/mip6.c b/net/ipv6/mip6.c
index 5b087c31d87..0f9bdc5ee9f 100644
--- a/net/ipv6/mip6.c
+++ b/net/ipv6/mip6.c
@@ -86,28 +86,30 @@ static int mip6_mh_len(int type)
 
 static int mip6_mh_filter(struct sock *sk, struct sk_buff *skb)
 {
-	struct ip6_mh *mh;
+	struct ip6_mh _hdr;
+	const struct ip6_mh *mh;
 
-	if (!pskb_may_pull(skb, (skb_transport_offset(skb)) + 8) ||
-	    !pskb_may_pull(skb, (skb_transport_offset(skb) +
-				 ((skb_transport_header(skb)[1] + 1) << 3))))
+	mh = skb_header_pointer(skb, skb_transport_offset(skb),
+				sizeof(_hdr), &_hdr);
+	if (!mh)
 		return -1;
 
-	mh = (struct ip6_mh *)skb_transport_header(skb);
+	if (((mh->ip6mh_hdrlen + 1) << 3) > skb->len)
+		return -1;
 
 	if (mh->ip6mh_hdrlen < mip6_mh_len(mh->ip6mh_type)) {
 		LIMIT_NETDEBUG(KERN_DEBUG "mip6: MH message too short: %d vs >=%d\n",
 			       mh->ip6mh_hdrlen, mip6_mh_len(mh->ip6mh_type));
-		mip6_param_prob(skb, 0, ((&mh->ip6mh_hdrlen) -
-					 skb_network_header(skb)));
+		mip6_param_prob(skb, 0, offsetof(struct ip6_mh, ip6mh_hdrlen) +
+				skb_network_header_len(skb));
 		return -1;
 	}
 
 	if (mh->ip6mh_proto != IPPROTO_NONE) {
 		LIMIT_NETDEBUG(KERN_DEBUG "mip6: MH invalid payload proto = %d\n",
 			       mh->ip6mh_proto);
-		mip6_param_prob(skb, 0, ((&mh->ip6mh_proto) -
-					 skb_network_header(skb)));
+		mip6_param_prob(skb, 0, offsetof(struct ip6_mh, ip6mh_proto) +
+				skb_network_header_len(skb));
 		return -1;
 	}
 
diff --git a/net/ipv6/netfilter.c b/net/ipv6/netfilter.c
index db31561cc8d..429089cb073 100644
--- a/net/ipv6/netfilter.c
+++ b/net/ipv6/netfilter.c
@@ -15,6 +15,7 @@ int ip6_route_me_harder(struct sk_buff *skb)
 {
 	struct net *net = dev_net(skb_dst(skb)->dev);
 	const struct ipv6hdr *iph = ipv6_hdr(skb);
+	unsigned int hh_len;
 	struct dst_entry *dst;
 	struct flowi6 fl6 = {
 		.flowi6_oif = skb->sk ? skb->sk->sk_bound_dev_if : 0,
@@ -47,6 +48,13 @@ int ip6_route_me_harder(struct sk_buff *skb)
 	}
 #endif
 
+	/* Change in oif may mean change in hh_len. */
+	hh_len = skb_dst(skb)->dev->hard_header_len;
+	if (skb_headroom(skb) < hh_len &&
+	    pskb_expand_head(skb, HH_DATA_ALIGN(hh_len - skb_headroom(skb)),
+			     0, GFP_ATOMIC))
+		return -1;
+
 	return 0;
 }
 EXPORT_SYMBOL(ip6_route_me_harder);
diff --git a/net/ipv6/netfilter/Kconfig b/net/ipv6/netfilter/Kconfig
index 10135342799..c72532a60d8 100644
--- a/net/ipv6/netfilter/Kconfig
+++ b/net/ipv6/netfilter/Kconfig
@@ -181,9 +181,44 @@ config IP6_NF_SECURITY
        help
          This option adds a `security' table to iptables, for use
          with Mandatory Access Control (MAC) policy.
-        
+
          If unsure, say N.
 
+config NF_NAT_IPV6
+	tristate "IPv6 NAT"
+	depends on NF_CONNTRACK_IPV6
+	depends on NETFILTER_ADVANCED
+	select NF_NAT
+	help
+	  The IPv6 NAT option allows masquerading, port forwarding and other
+	  forms of full Network Address Port Translation. It is controlled by
+	  the `nat' table in ip6tables, see the man page for ip6tables(8).
+
+	  To compile it as a module, choose M here.  If unsure, say N.
+
+if NF_NAT_IPV6
+
+config IP6_NF_TARGET_MASQUERADE
+	tristate "MASQUERADE target support"
+	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 IP6_NF_TARGET_NPT
+	tristate "NPT (Network Prefix translation) target support"
+	help
+	  This option adds the `SNPT' and `DNPT' target, which perform
+	  stateless IPv6-to-IPv6 Network Prefix Translation per RFC 6296.
+
+	  To compile it as a module, choose M here.  If unsure, say N.
+
+endif # NF_NAT_IPV6
+
 endif # IP6_NF_IPTABLES
 
 endmenu
diff --git a/net/ipv6/netfilter/Makefile b/net/ipv6/netfilter/Makefile
index 534d3f216f7..2d11fcc2cf3 100644
--- a/net/ipv6/netfilter/Makefile
+++ b/net/ipv6/netfilter/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_IP6_NF_FILTER) += ip6table_filter.o
 obj-$(CONFIG_IP6_NF_MANGLE) += ip6table_mangle.o
 obj-$(CONFIG_IP6_NF_RAW) += ip6table_raw.o
 obj-$(CONFIG_IP6_NF_SECURITY) += ip6table_security.o
+obj-$(CONFIG_NF_NAT_IPV6) += ip6table_nat.o
 
 # objects for l3 independent conntrack
 nf_conntrack_ipv6-y  :=  nf_conntrack_l3proto_ipv6.o nf_conntrack_proto_icmpv6.o
@@ -15,6 +16,9 @@ nf_conntrack_ipv6-y  :=  nf_conntrack_l3proto_ipv6.o nf_conntrack_proto_icmpv6.o
 # l3 independent conntrack
 obj-$(CONFIG_NF_CONNTRACK_IPV6) += nf_conntrack_ipv6.o nf_defrag_ipv6.o
 
+nf_nat_ipv6-y		:= nf_nat_l3proto_ipv6.o nf_nat_proto_icmpv6.o
+obj-$(CONFIG_NF_NAT_IPV6) += nf_nat_ipv6.o
+
 # defrag
 nf_defrag_ipv6-y := nf_defrag_ipv6_hooks.o nf_conntrack_reasm.o
 obj-$(CONFIG_NF_DEFRAG_IPV6) += nf_defrag_ipv6.o
@@ -30,4 +34,6 @@ obj-$(CONFIG_IP6_NF_MATCH_RPFILTER) += ip6t_rpfilter.o
 obj-$(CONFIG_IP6_NF_MATCH_RT) += ip6t_rt.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
diff --git a/net/ipv6/netfilter/ip6t_MASQUERADE.c b/net/ipv6/netfilter/ip6t_MASQUERADE.c
new file mode 100644
index 00000000000..60e9053bab0
--- /dev/null
+++ b/net/ipv6/netfilter/ip6t_MASQUERADE.c
@@ -0,0 +1,135 @@
+/*
+ * 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>
+
+static unsigned int
+masquerade_tg6(struct sk_buff *skb, const struct xt_action_param *par)
+{
+	const struct nf_nat_range *range = par->targinfo;
+	enum ip_conntrack_info ctinfo;
+	struct in6_addr src;
+	struct nf_conn *ct;
+	struct nf_nat_range newrange;
+
+	ct = nf_ct_get(skb, &ctinfo);
+	NF_CT_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED ||
+			    ctinfo == IP_CT_RELATED_REPLY));
+
+	if (ipv6_dev_get_saddr(dev_net(par->out), par->out,
+			       &ipv6_hdr(skb)->daddr, 0, &src) < 0)
+		return NF_DROP;
+
+	nfct_nat(ct)->masq_index = par->out->ifindex;
+
+	newrange.flags		= range->flags | NF_NAT_RANGE_MAP_IPS;
+	newrange.min_addr.in6	= src;
+	newrange.max_addr.in6	= src;
+	newrange.min_proto	= range->min_proto;
+	newrange.max_proto	= range->max_proto;
+
+	return nf_nat_setup_info(ct, &newrange, NF_NAT_MANIP_SRC);
+}
+
+static int masquerade_tg6_checkentry(const struct xt_tgchk_param *par)
+{
+	const struct nf_nat_range *range = par->targinfo;
+
+	if (range->flags & NF_NAT_RANGE_MAP_IPS)
+		return -EINVAL;
+	return 0;
+}
+
+static int device_cmp(struct nf_conn *ct, void *ifindex)
+{
+	const struct nf_conn_nat *nat = nfct_nat(ct);
+
+	if (!nat)
+		return 0;
+	if (nf_ct_l3num(ct) != NFPROTO_IPV6)
+		return 0;
+	return nat->masq_index == (int)(long)ifindex;
+}
+
+static int masq_device_event(struct notifier_block *this,
+			     unsigned long event, void *ptr)
+{
+	const struct net_device *dev = ptr;
+	struct net *net = dev_net(dev);
+
+	if (event == NETDEV_DOWN)
+		nf_ct_iterate_cleanup(net, device_cmp,
+				      (void *)(long)dev->ifindex);
+
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block masq_dev_notifier = {
+	.notifier_call	= masq_device_event,
+};
+
+static int masq_inet_event(struct notifier_block *this,
+			   unsigned long event, void *ptr)
+{
+	struct inet6_ifaddr *ifa = ptr;
+
+	return masq_device_event(this, event, ifa->idev->dev);
+}
+
+static struct notifier_block masq_inet_notifier = {
+	.notifier_call	= masq_inet_event,
+};
+
+static struct xt_target masquerade_tg6_reg __read_mostly = {
+	.name		= "MASQUERADE",
+	.family		= NFPROTO_IPV6,
+	.checkentry	= masquerade_tg6_checkentry,
+	.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 == 0) {
+		register_netdevice_notifier(&masq_dev_notifier);
+		register_inet6addr_notifier(&masq_inet_notifier);
+	}
+
+	return err;
+}
+static void __exit masquerade_tg6_exit(void)
+{
+	unregister_inet6addr_notifier(&masq_inet_notifier);
+	unregister_netdevice_notifier(&masq_dev_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/ip6t_NPT.c b/net/ipv6/netfilter/ip6t_NPT.c
new file mode 100644
index 00000000000..e9486915eff
--- /dev/null
+++ b/net/ipv6/netfilter/ip6t_NPT.c
@@ -0,0 +1,165 @@
+/*
+ * Copyright (c) 2011, 2012 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.
+ */
+
+#include <linux/module.h>
+#include <linux/skbuff.h>
+#include <linux/ipv6.h>
+#include <linux/netfilter.h>
+#include <linux/netfilter_ipv6.h>
+#include <linux/netfilter_ipv6/ip6t_NPT.h>
+#include <linux/netfilter/x_tables.h>
+
+static __sum16 csum16_complement(__sum16 a)
+{
+	return (__force __sum16)(0xffff - (__force u16)a);
+}
+
+static __sum16 csum16_add(__sum16 a, __sum16 b)
+{
+	u16 sum;
+
+	sum = (__force u16)a + (__force u16)b;
+	sum += (__force u16)a < (__force u16)b;
+	return (__force __sum16)sum;
+}
+
+static __sum16 csum16_sub(__sum16 a, __sum16 b)
+{
+	return csum16_add(a, csum16_complement(b));
+}
+
+static int ip6t_npt_checkentry(const struct xt_tgchk_param *par)
+{
+	struct ip6t_npt_tginfo *npt = par->targinfo;
+	__sum16 src_sum = 0, dst_sum = 0;
+	unsigned int i;
+
+	if (npt->src_pfx_len > 64 || npt->dst_pfx_len > 64)
+		return -EINVAL;
+
+	for (i = 0; i < ARRAY_SIZE(npt->src_pfx.in6.s6_addr16); i++) {
+		src_sum = csum16_add(src_sum,
+				(__force __sum16)npt->src_pfx.in6.s6_addr16[i]);
+		dst_sum = csum16_add(dst_sum,
+				(__force __sum16)npt->dst_pfx.in6.s6_addr16[i]);
+	}
+
+	npt->adjustment = csum16_sub(src_sum, dst_sum);
+	return 0;
+}
+
+static bool ip6t_npt_map_pfx(const struct ip6t_npt_tginfo *npt,
+			     struct in6_addr *addr)
+{
+	unsigned int pfx_len;
+	unsigned int i, idx;
+	__be32 mask;
+	__sum16 sum;
+
+	pfx_len = max(npt->src_pfx_len, npt->dst_pfx_len);
+	for (i = 0; i < pfx_len; i += 32) {
+		if (pfx_len - i >= 32)
+			mask = 0;
+		else
+			mask = htonl(~((1 << (pfx_len - i)) - 1));
+
+		idx = i / 32;
+		addr->s6_addr32[idx] &= mask;
+		addr->s6_addr32[idx] |= npt->dst_pfx.in6.s6_addr32[idx];
+	}
+
+	if (pfx_len <= 48)
+		idx = 3;
+	else {
+		for (idx = 4; idx < ARRAY_SIZE(addr->s6_addr16); idx++) {
+			if ((__force __sum16)addr->s6_addr16[idx] !=
+			    CSUM_MANGLED_0)
+				break;
+		}
+		if (idx == ARRAY_SIZE(addr->s6_addr16))
+			return false;
+	}
+
+	sum = csum16_add((__force __sum16)addr->s6_addr16[idx],
+			 npt->adjustment);
+	if (sum == CSUM_MANGLED_0)
+		sum = 0;
+	*(__force __sum16 *)&addr->s6_addr16[idx] = sum;
+
+	return true;
+}
+
+static unsigned int
+ip6t_snpt_tg(struct sk_buff *skb, const struct xt_action_param *par)
+{
+	const struct ip6t_npt_tginfo *npt = par->targinfo;
+
+	if (!ip6t_npt_map_pfx(npt, &ipv6_hdr(skb)->saddr)) {
+		icmpv6_send(skb, ICMPV6_PARAMPROB, ICMPV6_HDR_FIELD,
+			    offsetof(struct ipv6hdr, saddr));
+		return NF_DROP;
+	}
+	return XT_CONTINUE;
+}
+
+static unsigned int
+ip6t_dnpt_tg(struct sk_buff *skb, const struct xt_action_param *par)
+{
+	const struct ip6t_npt_tginfo *npt = par->targinfo;
+
+	if (!ip6t_npt_map_pfx(npt, &ipv6_hdr(skb)->daddr)) {
+		icmpv6_send(skb, ICMPV6_PARAMPROB, ICMPV6_HDR_FIELD,
+			    offsetof(struct ipv6hdr, daddr));
+		return NF_DROP;
+	}
+	return XT_CONTINUE;
+}
+
+static struct xt_target ip6t_npt_target_reg[] __read_mostly = {
+	{
+		.name		= "SNPT",
+		.target		= ip6t_snpt_tg,
+		.targetsize	= sizeof(struct ip6t_npt_tginfo),
+		.checkentry	= ip6t_npt_checkentry,
+		.family		= NFPROTO_IPV6,
+		.hooks		= (1 << NF_INET_LOCAL_IN) |
+				  (1 << NF_INET_POST_ROUTING),
+		.me		= THIS_MODULE,
+	},
+	{
+		.name		= "DNPT",
+		.target		= ip6t_dnpt_tg,
+		.targetsize	= sizeof(struct ip6t_npt_tginfo),
+		.checkentry	= ip6t_npt_checkentry,
+		.family		= NFPROTO_IPV6,
+		.hooks		= (1 << NF_INET_PRE_ROUTING) |
+				  (1 << NF_INET_LOCAL_OUT),
+		.me		= THIS_MODULE,
+	},
+};
+
+static int __init ip6t_npt_init(void)
+{
+	return xt_register_targets(ip6t_npt_target_reg,
+				   ARRAY_SIZE(ip6t_npt_target_reg));
+}
+
+static void __exit ip6t_npt_exit(void)
+{
+	xt_unregister_targets(ip6t_npt_target_reg,
+			      ARRAY_SIZE(ip6t_npt_target_reg));
+}
+
+module_init(ip6t_npt_init);
+module_exit(ip6t_npt_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("IPv6-to-IPv6 Network Prefix Translation (RFC 6296)");
+MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
+MODULE_ALIAS("ip6t_SNPT");
+MODULE_ALIAS("ip6t_DNPT");
diff --git a/net/ipv6/netfilter/ip6table_filter.c b/net/ipv6/netfilter/ip6table_filter.c
index 325e59a0224..beb5777d204 100644
--- a/net/ipv6/netfilter/ip6table_filter.c
+++ b/net/ipv6/netfilter/ip6table_filter.c
@@ -61,9 +61,7 @@ static int __net_init ip6table_filter_net_init(struct net *net)
 	net->ipv6.ip6table_filter =
 		ip6t_register_table(net, &packet_filter, repl);
 	kfree(repl);
-	if (IS_ERR(net->ipv6.ip6table_filter))
-		return PTR_ERR(net->ipv6.ip6table_filter);
-	return 0;
+	return PTR_RET(net->ipv6.ip6table_filter);
 }
 
 static void __net_exit ip6table_filter_net_exit(struct net *net)
diff --git a/net/ipv6/netfilter/ip6table_mangle.c b/net/ipv6/netfilter/ip6table_mangle.c
index 4d782405f12..7431121b87d 100644
--- a/net/ipv6/netfilter/ip6table_mangle.c
+++ b/net/ipv6/netfilter/ip6table_mangle.c
@@ -97,9 +97,7 @@ static int __net_init ip6table_mangle_net_init(struct net *net)
 	net->ipv6.ip6table_mangle =
 		ip6t_register_table(net, &packet_mangler, repl);
 	kfree(repl);
-	if (IS_ERR(net->ipv6.ip6table_mangle))
-		return PTR_ERR(net->ipv6.ip6table_mangle);
-	return 0;
+	return PTR_RET(net->ipv6.ip6table_mangle);
 }
 
 static void __net_exit ip6table_mangle_net_exit(struct net *net)
diff --git a/net/ipv6/netfilter/ip6table_nat.c b/net/ipv6/netfilter/ip6table_nat.c
new file mode 100644
index 00000000000..e418bd6350a
--- /dev/null
+++ b/net/ipv6/netfilter/ip6table_nat.c
@@ -0,0 +1,321 @@
+/*
+ * 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 IPv4 NAT code. Development of IPv6 NAT
+ * funded by Astaro.
+ */
+
+#include <linux/module.h>
+#include <linux/netfilter.h>
+#include <linux/netfilter_ipv6.h>
+#include <linux/netfilter_ipv6/ip6_tables.h>
+#include <linux/ipv6.h>
+#include <net/ipv6.h>
+
+#include <net/netfilter/nf_nat.h>
+#include <net/netfilter/nf_nat_core.h>
+#include <net/netfilter/nf_nat_l3proto.h>
+
+static const struct xt_table nf_nat_ipv6_table = {
+	.name		= "nat",
+	.valid_hooks	= (1 << NF_INET_PRE_ROUTING) |
+			  (1 << NF_INET_POST_ROUTING) |
+			  (1 << NF_INET_LOCAL_OUT) |
+			  (1 << NF_INET_LOCAL_IN),
+	.me		= THIS_MODULE,
+	.af		= NFPROTO_IPV6,
+};
+
+static unsigned int alloc_null_binding(struct nf_conn *ct, unsigned int hooknum)
+{
+	/* Force range to this IP; let proto decide mapping for
+	 * per-proto parts (hence not IP_NAT_RANGE_PROTO_SPECIFIED).
+	 */
+	struct nf_nat_range range;
+
+	range.flags = 0;
+	pr_debug("Allocating NULL binding for %p (%pI6)\n", ct,
+		 HOOK2MANIP(hooknum) == NF_NAT_MANIP_SRC ?
+		 &ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3.ip6 :
+		 &ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u3.ip6);
+
+	return nf_nat_setup_info(ct, &range, HOOK2MANIP(hooknum));
+}
+
+static unsigned int nf_nat_rule_find(struct sk_buff *skb, unsigned int hooknum,
+				     const struct net_device *in,
+				     const struct net_device *out,
+				     struct nf_conn *ct)
+{
+	struct net *net = nf_ct_net(ct);
+	unsigned int ret;
+
+	ret = ip6t_do_table(skb, hooknum, in, out, net->ipv6.ip6table_nat);
+	if (ret == NF_ACCEPT) {
+		if (!nf_nat_initialized(ct, HOOK2MANIP(hooknum)))
+			ret = alloc_null_binding(ct, hooknum);
+	}
+	return ret;
+}
+
+static unsigned int
+nf_nat_ipv6_fn(unsigned int hooknum,
+	       struct sk_buff *skb,
+	       const struct net_device *in,
+	       const struct net_device *out,
+	       int (*okfn)(struct sk_buff *))
+{
+	struct nf_conn *ct;
+	enum ip_conntrack_info ctinfo;
+	struct nf_conn_nat *nat;
+	enum nf_nat_manip_type maniptype = HOOK2MANIP(hooknum);
+	__be16 frag_off;
+	int hdrlen;
+	u8 nexthdr;
+
+	ct = nf_ct_get(skb, &ctinfo);
+	/* Can't track?  It's not due to stress, or conntrack would
+	 * have dropped it.  Hence it's the user's responsibilty to
+	 * packet filter it out, or implement conntrack/NAT for that
+	 * protocol. 8) --RR
+	 */
+	if (!ct)
+		return NF_ACCEPT;
+
+	/* Don't try to NAT if this packet is not conntracked */
+	if (nf_ct_is_untracked(ct))
+		return NF_ACCEPT;
+
+	nat = nfct_nat(ct);
+	if (!nat) {
+		/* NAT module was loaded late. */
+		if (nf_ct_is_confirmed(ct))
+			return NF_ACCEPT;
+		nat = nf_ct_ext_add(ct, NF_CT_EXT_NAT, GFP_ATOMIC);
+		if (nat == NULL) {
+			pr_debug("failed to add NAT extension\n");
+			return NF_ACCEPT;
+		}
+	}
+
+	switch (ctinfo) {
+	case IP_CT_RELATED:
+	case IP_CT_RELATED_REPLY:
+		nexthdr = ipv6_hdr(skb)->nexthdr;
+		hdrlen = ipv6_skip_exthdr(skb, sizeof(struct ipv6hdr),
+					  &nexthdr, &frag_off);
+
+		if (hdrlen >= 0 && nexthdr == IPPROTO_ICMPV6) {
+			if (!nf_nat_icmpv6_reply_translation(skb, ct, ctinfo,
+							     hooknum, hdrlen))
+				return NF_DROP;
+			else
+				return NF_ACCEPT;
+		}
+		/* Fall thru... (Only ICMPs can be IP_CT_IS_REPLY) */
+	case IP_CT_NEW:
+		/* Seen it before?  This can happen for loopback, retrans,
+		 * or local packets.
+		 */
+		if (!nf_nat_initialized(ct, maniptype)) {
+			unsigned int ret;
+
+			ret = nf_nat_rule_find(skb, hooknum, in, out, ct);
+			if (ret != NF_ACCEPT)
+				return ret;
+		} else
+			pr_debug("Already setup manip %s for ct %p\n",
+				 maniptype == NF_NAT_MANIP_SRC ? "SRC" : "DST",
+				 ct);
+		break;
+
+	default:
+		/* ESTABLISHED */
+		NF_CT_ASSERT(ctinfo == IP_CT_ESTABLISHED ||
+			     ctinfo == IP_CT_ESTABLISHED_REPLY);
+	}
+
+	return nf_nat_packet(ct, ctinfo, hooknum, skb);
+}
+
+static unsigned int
+nf_nat_ipv6_in(unsigned int hooknum,
+	       struct sk_buff *skb,
+	       const struct net_device *in,
+	       const struct net_device *out,
+	       int (*okfn)(struct sk_buff *))
+{
+	unsigned int ret;
+	struct in6_addr daddr = ipv6_hdr(skb)->daddr;
+
+	ret = nf_nat_ipv6_fn(hooknum, skb, in, out, okfn);
+	if (ret != NF_DROP && ret != NF_STOLEN &&
+	    ipv6_addr_cmp(&daddr, &ipv6_hdr(skb)->daddr))
+		skb_dst_drop(skb);
+
+	return ret;
+}
+
+static unsigned int
+nf_nat_ipv6_out(unsigned int hooknum,
+		struct sk_buff *skb,
+		const struct net_device *in,
+		const struct net_device *out,
+		int (*okfn)(struct sk_buff *))
+{
+#ifdef CONFIG_XFRM
+	const struct nf_conn *ct;
+	enum ip_conntrack_info ctinfo;
+#endif
+	unsigned int ret;
+
+	/* root is playing with raw sockets. */
+	if (skb->len < sizeof(struct ipv6hdr))
+		return NF_ACCEPT;
+
+	ret = nf_nat_ipv6_fn(hooknum, skb, in, out, okfn);
+#ifdef CONFIG_XFRM
+	if (ret != NF_DROP && ret != NF_STOLEN &&
+	    !(IP6CB(skb)->flags & IP6SKB_XFRM_TRANSFORMED) &&
+	    (ct = nf_ct_get(skb, &ctinfo)) != NULL) {
+		enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
+
+		if (!nf_inet_addr_cmp(&ct->tuplehash[dir].tuple.src.u3,
+				      &ct->tuplehash[!dir].tuple.dst.u3) ||
+		    (ct->tuplehash[dir].tuple.src.u.all !=
+		     ct->tuplehash[!dir].tuple.dst.u.all))
+			if (nf_xfrm_me_harder(skb, AF_INET6) < 0)
+				ret = NF_DROP;
+	}
+#endif
+	return ret;
+}
+
+static unsigned int
+nf_nat_ipv6_local_fn(unsigned int hooknum,
+		     struct sk_buff *skb,
+		     const struct net_device *in,
+		     const struct net_device *out,
+		     int (*okfn)(struct sk_buff *))
+{
+	const struct nf_conn *ct;
+	enum ip_conntrack_info ctinfo;
+	unsigned int ret;
+
+	/* root is playing with raw sockets. */
+	if (skb->len < sizeof(struct ipv6hdr))
+		return NF_ACCEPT;
+
+	ret = nf_nat_ipv6_fn(hooknum, skb, in, out, okfn);
+	if (ret != NF_DROP && ret != NF_STOLEN &&
+	    (ct = nf_ct_get(skb, &ctinfo)) != NULL) {
+		enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
+
+		if (!nf_inet_addr_cmp(&ct->tuplehash[dir].tuple.dst.u3,
+				      &ct->tuplehash[!dir].tuple.src.u3)) {
+			if (ip6_route_me_harder(skb))
+				ret = NF_DROP;
+		}
+#ifdef CONFIG_XFRM
+		else if (!(IP6CB(skb)->flags & IP6SKB_XFRM_TRANSFORMED) &&
+			 ct->tuplehash[dir].tuple.dst.u.all !=
+			 ct->tuplehash[!dir].tuple.src.u.all)
+			if (nf_xfrm_me_harder(skb, AF_INET6))
+				ret = NF_DROP;
+#endif
+	}
+	return ret;
+}
+
+static struct nf_hook_ops nf_nat_ipv6_ops[] __read_mostly = {
+	/* Before packet filtering, change destination */
+	{
+		.hook		= nf_nat_ipv6_in,
+		.owner		= THIS_MODULE,
+		.pf		= NFPROTO_IPV6,
+		.hooknum	= NF_INET_PRE_ROUTING,
+		.priority	= NF_IP6_PRI_NAT_DST,
+	},
+	/* After packet filtering, change source */
+	{
+		.hook		= nf_nat_ipv6_out,
+		.owner		= THIS_MODULE,
+		.pf		= NFPROTO_IPV6,
+		.hooknum	= NF_INET_POST_ROUTING,
+		.priority	= NF_IP6_PRI_NAT_SRC,
+	},
+	/* Before packet filtering, change destination */
+	{
+		.hook		= nf_nat_ipv6_local_fn,
+		.owner		= THIS_MODULE,
+		.pf		= NFPROTO_IPV6,
+		.hooknum	= NF_INET_LOCAL_OUT,
+		.priority	= NF_IP6_PRI_NAT_DST,
+	},
+	/* After packet filtering, change source */
+	{
+		.hook		= nf_nat_ipv6_fn,
+		.owner		= THIS_MODULE,
+		.pf		= NFPROTO_IPV6,
+		.hooknum	= NF_INET_LOCAL_IN,
+		.priority	= NF_IP6_PRI_NAT_SRC,
+	},
+};
+
+static int __net_init ip6table_nat_net_init(struct net *net)
+{
+	struct ip6t_replace *repl;
+
+	repl = ip6t_alloc_initial_table(&nf_nat_ipv6_table);
+	if (repl == NULL)
+		return -ENOMEM;
+	net->ipv6.ip6table_nat = ip6t_register_table(net, &nf_nat_ipv6_table, repl);
+	kfree(repl);
+	if (IS_ERR(net->ipv6.ip6table_nat))
+		return PTR_ERR(net->ipv6.ip6table_nat);
+	return 0;
+}
+
+static void __net_exit ip6table_nat_net_exit(struct net *net)
+{
+	ip6t_unregister_table(net, net->ipv6.ip6table_nat);
+}
+
+static struct pernet_operations ip6table_nat_net_ops = {
+	.init	= ip6table_nat_net_init,
+	.exit	= ip6table_nat_net_exit,
+};
+
+static int __init ip6table_nat_init(void)
+{
+	int err;
+
+	err = register_pernet_subsys(&ip6table_nat_net_ops);
+	if (err < 0)
+		goto err1;
+
+	err = nf_register_hooks(nf_nat_ipv6_ops, ARRAY_SIZE(nf_nat_ipv6_ops));
+	if (err < 0)
+		goto err2;
+	return 0;
+
+err2:
+	unregister_pernet_subsys(&ip6table_nat_net_ops);
+err1:
+	return err;
+}
+
+static void __exit ip6table_nat_exit(void)
+{
+	nf_unregister_hooks(nf_nat_ipv6_ops, ARRAY_SIZE(nf_nat_ipv6_ops));
+	unregister_pernet_subsys(&ip6table_nat_net_ops);
+}
+
+module_init(ip6table_nat_init);
+module_exit(ip6table_nat_exit);
+
+MODULE_LICENSE("GPL");
diff --git a/net/ipv6/netfilter/ip6table_raw.c b/net/ipv6/netfilter/ip6table_raw.c
index 5b9926a011b..60d1bddff7a 100644
--- a/net/ipv6/netfilter/ip6table_raw.c
+++ b/net/ipv6/netfilter/ip6table_raw.c
@@ -40,9 +40,7 @@ static int __net_init ip6table_raw_net_init(struct net *net)
 	net->ipv6.ip6table_raw =
 		ip6t_register_table(net, &packet_raw, repl);
 	kfree(repl);
-	if (IS_ERR(net->ipv6.ip6table_raw))
-		return PTR_ERR(net->ipv6.ip6table_raw);
-	return 0;
+	return PTR_RET(net->ipv6.ip6table_raw);
 }
 
 static void __net_exit ip6table_raw_net_exit(struct net *net)
diff --git a/net/ipv6/netfilter/ip6table_security.c b/net/ipv6/netfilter/ip6table_security.c
index 91aa2b4d83c..db155351339 100644
--- a/net/ipv6/netfilter/ip6table_security.c
+++ b/net/ipv6/netfilter/ip6table_security.c
@@ -58,10 +58,7 @@ static int __net_init ip6table_security_net_init(struct net *net)
 	net->ipv6.ip6table_security =
 		ip6t_register_table(net, &security_table, repl);
 	kfree(repl);
-	if (IS_ERR(net->ipv6.ip6table_security))
-		return PTR_ERR(net->ipv6.ip6table_security);
-
-	return 0;
+	return PTR_RET(net->ipv6.ip6table_security);
 }
 
 static void __net_exit ip6table_security_net_exit(struct net *net)
diff --git a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
index 4794f96cf2e..8860d23e61c 100644
--- a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
@@ -28,6 +28,7 @@
 #include <net/netfilter/nf_conntrack_core.h>
 #include <net/netfilter/nf_conntrack_zones.h>
 #include <net/netfilter/ipv6/nf_conntrack_ipv6.h>
+#include <net/netfilter/nf_nat_helper.h>
 #include <net/netfilter/ipv6/nf_defrag_ipv6.h>
 #include <net/netfilter/nf_log.h>
 
@@ -64,82 +65,31 @@ static int ipv6_print_tuple(struct seq_file *s,
 			  tuple->src.u3.ip6, tuple->dst.u3.ip6);
 }
 
-/*
- * Based on ipv6_skip_exthdr() in net/ipv6/exthdr.c
- *
- * This function parses (probably truncated) exthdr set "hdr"
- * of length "len". "nexthdrp" initially points to some place,
- * where type of the first header can be found.
- *
- * It skips all well-known exthdrs, and returns pointer to the start
- * of unparsable area i.e. the first header with unknown type.
- * if success, *nexthdr is updated by type/protocol of this header.
- *
- * NOTES: - it may return pointer pointing beyond end of packet,
- *          if the last recognized header is truncated in the middle.
- *        - if packet is truncated, so that all parsed headers are skipped,
- *          it returns -1.
- *        - if packet is fragmented, return pointer of the fragment header.
- *        - ESP is unparsable for now and considered like
- *          normal payload protocol.
- *        - Note also special handling of AUTH header. Thanks to IPsec wizards.
- */
-
-static int nf_ct_ipv6_skip_exthdr(const struct sk_buff *skb, int start,
-				  u8 *nexthdrp, int len)
-{
-	u8 nexthdr = *nexthdrp;
-
-	while (ipv6_ext_hdr(nexthdr)) {
-		struct ipv6_opt_hdr hdr;
-		int hdrlen;
-
-		if (len < (int)sizeof(struct ipv6_opt_hdr))
-			return -1;
-		if (nexthdr == NEXTHDR_NONE)
-			break;
-		if (nexthdr == NEXTHDR_FRAGMENT)
-			break;
-		if (skb_copy_bits(skb, start, &hdr, sizeof(hdr)))
-			BUG();
-		if (nexthdr == NEXTHDR_AUTH)
-			hdrlen = (hdr.hdrlen+2)<<2;
-		else
-			hdrlen = ipv6_optlen(&hdr);
-
-		nexthdr = hdr.nexthdr;
-		len -= hdrlen;
-		start += hdrlen;
-	}
-
-	*nexthdrp = nexthdr;
-	return start;
-}
-
 static int ipv6_get_l4proto(const struct sk_buff *skb, unsigned int nhoff,
 			    unsigned int *dataoff, u_int8_t *protonum)
 {
 	unsigned int extoff = nhoff + sizeof(struct ipv6hdr);
-	unsigned char pnum;
+	__be16 frag_off;
 	int protoff;
+	u8 nexthdr;
 
 	if (skb_copy_bits(skb, nhoff + offsetof(struct ipv6hdr, nexthdr),
-			  &pnum, sizeof(pnum)) != 0) {
+			  &nexthdr, sizeof(nexthdr)) != 0) {
 		pr_debug("ip6_conntrack_core: can't get nexthdr\n");
 		return -NF_ACCEPT;
 	}
-	protoff = nf_ct_ipv6_skip_exthdr(skb, extoff, &pnum, skb->len - extoff);
+	protoff = ipv6_skip_exthdr(skb, extoff, &nexthdr, &frag_off);
 	/*
 	 * (protoff == skb->len) mean that the packet doesn't have no data
 	 * except of IPv6 & ext headers. but it's tracked anyway. - YK
 	 */
-	if ((protoff < 0) || (protoff > skb->len)) {
+	if (protoff < 0 || (frag_off & htons(~0x7)) != 0) {
 		pr_debug("ip6_conntrack_core: can't find proto in pkt\n");
 		return -NF_ACCEPT;
 	}
 
 	*dataoff = protoff;
-	*protonum = pnum;
+	*protonum = nexthdr;
 	return NF_ACCEPT;
 }
 
@@ -153,10 +103,10 @@ static unsigned int ipv6_helper(unsigned int hooknum,
 	const struct nf_conn_help *help;
 	const struct nf_conntrack_helper *helper;
 	enum ip_conntrack_info ctinfo;
-	unsigned int ret, protoff;
-	unsigned int extoff = (u8 *)(ipv6_hdr(skb) + 1) - skb->data;
-	unsigned char pnum = ipv6_hdr(skb)->nexthdr;
-
+	unsigned int ret;
+	__be16 frag_off;
+	int protoff;
+	u8 nexthdr;
 
 	/* This is where we call the helper: as the packet goes out. */
 	ct = nf_ct_get(skb, &ctinfo);
@@ -171,9 +121,10 @@ static unsigned int ipv6_helper(unsigned int hooknum,
 	if (!helper)
 		return NF_ACCEPT;
 
-	protoff = nf_ct_ipv6_skip_exthdr(skb, extoff, &pnum,
-					 skb->len - extoff);
-	if (protoff > skb->len || pnum == NEXTHDR_FRAGMENT) {
+	nexthdr = ipv6_hdr(skb)->nexthdr;
+	protoff = ipv6_skip_exthdr(skb, sizeof(struct ipv6hdr), &nexthdr,
+				   &frag_off);
+	if (protoff < 0 || (frag_off & htons(~0x7)) != 0) {
 		pr_debug("proto header not found\n");
 		return NF_ACCEPT;
 	}
@@ -192,6 +143,36 @@ static unsigned int ipv6_confirm(unsigned int hooknum,
 				 const struct net_device *out,
 				 int (*okfn)(struct sk_buff *))
 {
+	struct nf_conn *ct;
+	enum ip_conntrack_info ctinfo;
+	unsigned char pnum = ipv6_hdr(skb)->nexthdr;
+	int protoff;
+	__be16 frag_off;
+
+	ct = nf_ct_get(skb, &ctinfo);
+	if (!ct || ctinfo == IP_CT_RELATED_REPLY)
+		goto out;
+
+	protoff = ipv6_skip_exthdr(skb, sizeof(struct ipv6hdr), &pnum,
+				   &frag_off);
+	if (protoff < 0 || (frag_off & htons(~0x7)) != 0) {
+		pr_debug("proto header not found\n");
+		goto out;
+	}
+
+	/* adjust seqs for loopback traffic only in outgoing direction */
+	if (test_bit(IPS_SEQ_ADJUST_BIT, &ct->status) &&
+	    !nf_is_loopback_packet(skb)) {
+		typeof(nf_nat_seq_adjust_hook) seq_adjust;
+
+		seq_adjust = rcu_dereference(nf_nat_seq_adjust_hook);
+		if (!seq_adjust ||
+		    !seq_adjust(skb, ct, ctinfo, protoff)) {
+			NF_CT_STAT_INC_ATOMIC(nf_ct_net(ct), drop);
+			return NF_DROP;
+		}
+	}
+out:
 	/* We've seen it coming out the other side: confirm it */
 	return nf_conntrack_confirm(skb);
 }
@@ -199,9 +180,14 @@ static unsigned int ipv6_confirm(unsigned int hooknum,
 static unsigned int __ipv6_conntrack_in(struct net *net,
 					unsigned int hooknum,
 					struct sk_buff *skb,
+					const struct net_device *in,
+					const struct net_device *out,
 					int (*okfn)(struct sk_buff *))
 {
 	struct sk_buff *reasm = skb->nfct_reasm;
+	const struct nf_conn_help *help;
+	struct nf_conn *ct;
+	enum ip_conntrack_info ctinfo;
 
 	/* This packet is fragmented and has reassembled packet. */
 	if (reasm) {
@@ -213,6 +199,25 @@ static unsigned int __ipv6_conntrack_in(struct net *net,
 			if (ret != NF_ACCEPT)
 				return ret;
 		}
+
+		/* Conntrack helpers need the entire reassembled packet in the
+		 * POST_ROUTING hook. In case of unconfirmed connections NAT
+		 * might reassign a helper, so the entire packet is also
+		 * required.
+		 */
+		ct = nf_ct_get(reasm, &ctinfo);
+		if (ct != NULL && !nf_ct_is_untracked(ct)) {
+			help = nfct_help(ct);
+			if ((help && help->helper) || !nf_ct_is_confirmed(ct)) {
+				nf_conntrack_get_reasm(skb);
+				NF_HOOK_THRESH(NFPROTO_IPV6, hooknum, reasm,
+					       (struct net_device *)in,
+					       (struct net_device *)out,
+					       okfn, NF_IP6_PRI_CONNTRACK + 1);
+				return NF_DROP_ERR(-ECANCELED);
+			}
+		}
+
 		nf_conntrack_get(reasm->nfct);
 		skb->nfct = reasm->nfct;
 		skb->nfctinfo = reasm->nfctinfo;
@@ -228,7 +233,7 @@ static unsigned int ipv6_conntrack_in(unsigned int hooknum,
 				      const struct net_device *out,
 				      int (*okfn)(struct sk_buff *))
 {
-	return __ipv6_conntrack_in(dev_net(in), hooknum, skb, okfn);
+	return __ipv6_conntrack_in(dev_net(in), hooknum, skb, in, out, okfn);
 }
 
 static unsigned int ipv6_conntrack_local(unsigned int hooknum,
@@ -242,7 +247,7 @@ static unsigned int ipv6_conntrack_local(unsigned int hooknum,
 		net_notice_ratelimited("ipv6_conntrack_local: packet too short\n");
 		return NF_ACCEPT;
 	}
-	return __ipv6_conntrack_in(dev_net(out), hooknum, skb, okfn);
+	return __ipv6_conntrack_in(dev_net(out), hooknum, skb, in, out, okfn);
 }
 
 static struct nf_hook_ops ipv6_conntrack_ops[] __read_mostly = {
diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c
index c9c78c2e666..18bd9bbbd1c 100644
--- a/net/ipv6/netfilter/nf_conntrack_reasm.c
+++ b/net/ipv6/netfilter/nf_conntrack_reasm.c
@@ -57,41 +57,27 @@ struct nf_ct_frag6_skb_cb
 
 #define NFCT_FRAG6_CB(skb)	((struct nf_ct_frag6_skb_cb*)((skb)->cb))
 
-struct nf_ct_frag6_queue
-{
-	struct inet_frag_queue	q;
-
-	__be32			id;		/* fragment id		*/
-	u32			user;
-	struct in6_addr		saddr;
-	struct in6_addr		daddr;
-
-	unsigned int		csum;
-	__u16			nhoffset;
-};
-
 static struct inet_frags nf_frags;
-static struct netns_frags nf_init_frags;
 
 #ifdef CONFIG_SYSCTL
 static struct ctl_table nf_ct_frag6_sysctl_table[] = {
 	{
 		.procname	= "nf_conntrack_frag6_timeout",
-		.data		= &nf_init_frags.timeout,
+		.data		= &init_net.nf_frag.frags.timeout,
 		.maxlen		= sizeof(unsigned int),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec_jiffies,
 	},
 	{
 		.procname	= "nf_conntrack_frag6_low_thresh",
-		.data		= &nf_init_frags.low_thresh,
+		.data		= &init_net.nf_frag.frags.low_thresh,
 		.maxlen		= sizeof(unsigned int),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec,
 	},
 	{
 		.procname	= "nf_conntrack_frag6_high_thresh",
-		.data		= &nf_init_frags.high_thresh,
+		.data		= &init_net.nf_frag.frags.high_thresh,
 		.maxlen		= sizeof(unsigned int),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec,
@@ -99,68 +85,86 @@ static struct ctl_table nf_ct_frag6_sysctl_table[] = {
 	{ }
 };
 
-static struct ctl_table_header *nf_ct_frag6_sysctl_header;
-#endif
-
-static unsigned int nf_hashfn(struct inet_frag_queue *q)
+static int __net_init nf_ct_frag6_sysctl_register(struct net *net)
 {
-	const struct nf_ct_frag6_queue *nq;
+	struct ctl_table *table;
+	struct ctl_table_header *hdr;
+
+	table = nf_ct_frag6_sysctl_table;
+	if (!net_eq(net, &init_net)) {
+		table = kmemdup(table, sizeof(nf_ct_frag6_sysctl_table),
+				GFP_KERNEL);
+		if (table == NULL)
+			goto err_alloc;
+
+		table[0].data = &net->ipv6.frags.high_thresh;
+		table[1].data = &net->ipv6.frags.low_thresh;
+		table[2].data = &net->ipv6.frags.timeout;
+	}
 
-	nq = container_of(q, struct nf_ct_frag6_queue, q);
-	return inet6_hash_frag(nq->id, &nq->saddr, &nq->daddr, nf_frags.rnd);
+	hdr = register_net_sysctl(net, "net/netfilter", table);
+	if (hdr == NULL)
+		goto err_reg;
+
+	net->nf_frag.sysctl.frags_hdr = hdr;
+	return 0;
+
+err_reg:
+	if (!net_eq(net, &init_net))
+		kfree(table);
+err_alloc:
+	return -ENOMEM;
 }
 
-static void nf_skb_free(struct sk_buff *skb)
+static void __net_exit nf_ct_frags6_sysctl_unregister(struct net *net)
 {
-	if (NFCT_FRAG6_CB(skb)->orig)
-		kfree_skb(NFCT_FRAG6_CB(skb)->orig);
-}
+	struct ctl_table *table;
 
-/* Destruction primitives. */
+	table = net->nf_frag.sysctl.frags_hdr->ctl_table_arg;
+	unregister_net_sysctl_table(net->nf_frag.sysctl.frags_hdr);
+	if (!net_eq(net, &init_net))
+		kfree(table);
+}
 
-static __inline__ void fq_put(struct nf_ct_frag6_queue *fq)
+#else
+static int __net_init nf_ct_frag6_sysctl_register(struct net *net)
 {
-	inet_frag_put(&fq->q, &nf_frags);
+	return 0;
 }
+static void __net_exit nf_ct_frags6_sysctl_unregister(struct net *net)
+{
+}
+#endif
 
-/* Kill fq entry. It is not destroyed immediately,
- * because caller (and someone more) holds reference count.
- */
-static __inline__ void fq_kill(struct nf_ct_frag6_queue *fq)
+static unsigned int nf_hashfn(struct inet_frag_queue *q)
 {
-	inet_frag_kill(&fq->q, &nf_frags);
+	const struct frag_queue *nq;
+
+	nq = container_of(q, struct frag_queue, q);
+	return inet6_hash_frag(nq->id, &nq->saddr, &nq->daddr, nf_frags.rnd);
 }
 
-static void nf_ct_frag6_evictor(void)
+static void nf_skb_free(struct sk_buff *skb)
 {
-	local_bh_disable();
-	inet_frag_evictor(&nf_init_frags, &nf_frags);
-	local_bh_enable();
+	if (NFCT_FRAG6_CB(skb)->orig)
+		kfree_skb(NFCT_FRAG6_CB(skb)->orig);
 }
 
 static void nf_ct_frag6_expire(unsigned long data)
 {
-	struct nf_ct_frag6_queue *fq;
-
-	fq = container_of((struct inet_frag_queue *)data,
-			struct nf_ct_frag6_queue, q);
-
-	spin_lock(&fq->q.lock);
+	struct frag_queue *fq;
+	struct net *net;
 
-	if (fq->q.last_in & INET_FRAG_COMPLETE)
-		goto out;
+	fq = container_of((struct inet_frag_queue *)data, struct frag_queue, q);
+	net = container_of(fq->q.net, struct net, nf_frag.frags);
 
-	fq_kill(fq);
-
-out:
-	spin_unlock(&fq->q.lock);
-	fq_put(fq);
+	ip6_expire_frag_queue(net, fq, &nf_frags);
 }
 
 /* Creation primitives. */
-
-static __inline__ struct nf_ct_frag6_queue *
-fq_find(__be32 id, u32 user, struct in6_addr *src, struct in6_addr *dst)
+static inline struct frag_queue *fq_find(struct net *net, __be32 id,
+					 u32 user, struct in6_addr *src,
+					 struct in6_addr *dst)
 {
 	struct inet_frag_queue *q;
 	struct ip6_create_arg arg;
@@ -174,22 +178,23 @@ fq_find(__be32 id, u32 user, struct in6_addr *src, struct in6_addr *dst)
 	read_lock_bh(&nf_frags.lock);
 	hash = inet6_hash_frag(id, src, dst, nf_frags.rnd);
 
-	q = inet_frag_find(&nf_init_frags, &nf_frags, &arg, hash);
+	q = inet_frag_find(&net->nf_frag.frags, &nf_frags, &arg, hash);
 	local_bh_enable();
 	if (q == NULL)
 		goto oom;
 
-	return container_of(q, struct nf_ct_frag6_queue, q);
+	return container_of(q, struct frag_queue, q);
 
 oom:
 	return NULL;
 }
 
 
-static int nf_ct_frag6_queue(struct nf_ct_frag6_queue *fq, struct sk_buff *skb,
+static int nf_ct_frag6_queue(struct frag_queue *fq, struct sk_buff *skb,
 			     const struct frag_hdr *fhdr, int nhoff)
 {
 	struct sk_buff *prev, *next;
+	unsigned int payload_len;
 	int offset, end;
 
 	if (fq->q.last_in & INET_FRAG_COMPLETE) {
@@ -197,8 +202,10 @@ static int nf_ct_frag6_queue(struct nf_ct_frag6_queue *fq, struct sk_buff *skb,
 		goto err;
 	}
 
+	payload_len = ntohs(ipv6_hdr(skb)->payload_len);
+
 	offset = ntohs(fhdr->frag_off) & ~0x7;
-	end = offset + (ntohs(ipv6_hdr(skb)->payload_len) -
+	end = offset + (payload_len -
 			((u8 *)(fhdr + 1) - (u8 *)(ipv6_hdr(skb) + 1)));
 
 	if ((unsigned int)end > IPV6_MAXPLEN) {
@@ -307,7 +314,9 @@ found:
 	skb->dev = NULL;
 	fq->q.stamp = skb->tstamp;
 	fq->q.meat += skb->len;
-	atomic_add(skb->truesize, &nf_init_frags.mem);
+	if (payload_len > fq->q.max_size)
+		fq->q.max_size = payload_len;
+	atomic_add(skb->truesize, &fq->q.net->mem);
 
 	/* The first fragment.
 	 * nhoffset is obtained from the first fragment, of course.
@@ -317,12 +326,12 @@ found:
 		fq->q.last_in |= INET_FRAG_FIRST_IN;
 	}
 	write_lock(&nf_frags.lock);
-	list_move_tail(&fq->q.lru_list, &nf_init_frags.lru_list);
+	list_move_tail(&fq->q.lru_list, &fq->q.net->lru_list);
 	write_unlock(&nf_frags.lock);
 	return 0;
 
 discard_fq:
-	fq_kill(fq);
+	inet_frag_kill(&fq->q, &nf_frags);
 err:
 	return -1;
 }
@@ -337,12 +346,12 @@ err:
  *	the last and the first frames arrived and all the bits are here.
  */
 static struct sk_buff *
-nf_ct_frag6_reasm(struct nf_ct_frag6_queue *fq, struct net_device *dev)
+nf_ct_frag6_reasm(struct frag_queue *fq, struct net_device *dev)
 {
 	struct sk_buff *fp, *op, *head = fq->q.fragments;
 	int    payload_len;
 
-	fq_kill(fq);
+	inet_frag_kill(&fq->q, &nf_frags);
 
 	WARN_ON(head == NULL);
 	WARN_ON(NFCT_FRAG6_CB(head)->offset != 0);
@@ -386,7 +395,7 @@ nf_ct_frag6_reasm(struct nf_ct_frag6_queue *fq, struct net_device *dev)
 		clone->ip_summed = head->ip_summed;
 
 		NFCT_FRAG6_CB(clone)->orig = NULL;
-		atomic_add(clone->truesize, &nf_init_frags.mem);
+		atomic_add(clone->truesize, &fq->q.net->mem);
 	}
 
 	/* We have to remove fragment header from datagram and to relocate
@@ -410,12 +419,14 @@ nf_ct_frag6_reasm(struct nf_ct_frag6_queue *fq, struct net_device *dev)
 			head->csum = csum_add(head->csum, fp->csum);
 		head->truesize += fp->truesize;
 	}
-	atomic_sub(head->truesize, &nf_init_frags.mem);
+	atomic_sub(head->truesize, &fq->q.net->mem);
 
+	head->local_df = 1;
 	head->next = NULL;
 	head->dev = dev;
 	head->tstamp = fq->q.stamp;
 	ipv6_hdr(head)->payload_len = htons(payload_len);
+	IP6CB(head)->frag_max_size = sizeof(struct ipv6hdr) + fq->q.max_size;
 
 	/* Yes, and fold redundant checksum back. 8) */
 	if (head->ip_summed == CHECKSUM_COMPLETE)
@@ -520,8 +531,10 @@ struct sk_buff *nf_ct_frag6_gather(struct sk_buff *skb, u32 user)
 {
 	struct sk_buff *clone;
 	struct net_device *dev = skb->dev;
+	struct net *net = skb_dst(skb) ? dev_net(skb_dst(skb)->dev)
+				       : dev_net(skb->dev);
 	struct frag_hdr *fhdr;
-	struct nf_ct_frag6_queue *fq;
+	struct frag_queue *fq;
 	struct ipv6hdr *hdr;
 	int fhoff, nhoff;
 	u8 prevhdr;
@@ -553,10 +566,11 @@ struct sk_buff *nf_ct_frag6_gather(struct sk_buff *skb, u32 user)
 	hdr = ipv6_hdr(clone);
 	fhdr = (struct frag_hdr *)skb_transport_header(clone);
 
-	if (atomic_read(&nf_init_frags.mem) > nf_init_frags.high_thresh)
-		nf_ct_frag6_evictor();
+	local_bh_disable();
+	inet_frag_evictor(&net->nf_frag.frags, &nf_frags, false);
+	local_bh_enable();
 
-	fq = fq_find(fhdr->identification, user, &hdr->saddr, &hdr->daddr);
+	fq = fq_find(net, fhdr->identification, user, &hdr->saddr, &hdr->daddr);
 	if (fq == NULL) {
 		pr_debug("Can't find and can't create new queue\n");
 		goto ret_orig;
@@ -567,7 +581,7 @@ struct sk_buff *nf_ct_frag6_gather(struct sk_buff *skb, u32 user)
 	if (nf_ct_frag6_queue(fq, clone, fhdr, nhoff) < 0) {
 		spin_unlock_bh(&fq->q.lock);
 		pr_debug("Can't insert skb to queue\n");
-		fq_put(fq);
+		inet_frag_put(&fq->q, &nf_frags);
 		goto ret_orig;
 	}
 
@@ -579,7 +593,7 @@ struct sk_buff *nf_ct_frag6_gather(struct sk_buff *skb, u32 user)
 	}
 	spin_unlock_bh(&fq->q.lock);
 
-	fq_put(fq);
+	inet_frag_put(&fq->q, &nf_frags);
 	return ret_skb;
 
 ret_orig:
@@ -592,6 +606,7 @@ void nf_ct_frag6_output(unsigned int hooknum, struct sk_buff *skb,
 			int (*okfn)(struct sk_buff *))
 {
 	struct sk_buff *s, *s2;
+	unsigned int ret = 0;
 
 	for (s = NFCT_FRAG6_CB(skb)->orig; s;) {
 		nf_conntrack_put_reasm(s->nfct_reasm);
@@ -601,49 +616,62 @@ void nf_ct_frag6_output(unsigned int hooknum, struct sk_buff *skb,
 		s2 = s->next;
 		s->next = NULL;
 
-		NF_HOOK_THRESH(NFPROTO_IPV6, hooknum, s, in, out, okfn,
-			       NF_IP6_PRI_CONNTRACK_DEFRAG + 1);
+		if (ret != -ECANCELED)
+			ret = NF_HOOK_THRESH(NFPROTO_IPV6, hooknum, s,
+					     in, out, okfn,
+					     NF_IP6_PRI_CONNTRACK_DEFRAG + 1);
+		else
+			kfree_skb(s);
+
 		s = s2;
 	}
 	nf_conntrack_put_reasm(skb);
 }
 
+static int nf_ct_net_init(struct net *net)
+{
+	net->nf_frag.frags.high_thresh = IPV6_FRAG_HIGH_THRESH;
+	net->nf_frag.frags.low_thresh = IPV6_FRAG_LOW_THRESH;
+	net->nf_frag.frags.timeout = IPV6_FRAG_TIMEOUT;
+	inet_frags_init_net(&net->nf_frag.frags);
+
+	return nf_ct_frag6_sysctl_register(net);
+}
+
+static void nf_ct_net_exit(struct net *net)
+{
+	nf_ct_frags6_sysctl_unregister(net);
+	inet_frags_exit_net(&net->nf_frag.frags, &nf_frags);
+}
+
+static struct pernet_operations nf_ct_net_ops = {
+	.init = nf_ct_net_init,
+	.exit = nf_ct_net_exit,
+};
+
 int nf_ct_frag6_init(void)
 {
+	int ret = 0;
+
 	nf_frags.hashfn = nf_hashfn;
 	nf_frags.constructor = ip6_frag_init;
 	nf_frags.destructor = NULL;
 	nf_frags.skb_free = nf_skb_free;
-	nf_frags.qsize = sizeof(struct nf_ct_frag6_queue);
+	nf_frags.qsize = sizeof(struct frag_queue);
 	nf_frags.match = ip6_frag_match;
 	nf_frags.frag_expire = nf_ct_frag6_expire;
 	nf_frags.secret_interval = 10 * 60 * HZ;
-	nf_init_frags.timeout = IPV6_FRAG_TIMEOUT;
-	nf_init_frags.high_thresh = IPV6_FRAG_HIGH_THRESH;
-	nf_init_frags.low_thresh = IPV6_FRAG_LOW_THRESH;
-	inet_frags_init_net(&nf_init_frags);
 	inet_frags_init(&nf_frags);
 
-#ifdef CONFIG_SYSCTL
-	nf_ct_frag6_sysctl_header = register_net_sysctl(&init_net, "net/netfilter",
-							nf_ct_frag6_sysctl_table);
-	if (!nf_ct_frag6_sysctl_header) {
+	ret = register_pernet_subsys(&nf_ct_net_ops);
+	if (ret)
 		inet_frags_fini(&nf_frags);
-		return -ENOMEM;
-	}
-#endif
 
-	return 0;
+	return ret;
 }
 
 void nf_ct_frag6_cleanup(void)
 {
-#ifdef CONFIG_SYSCTL
-	unregister_net_sysctl_table(nf_ct_frag6_sysctl_header);
-	nf_ct_frag6_sysctl_header = NULL;
-#endif
+	unregister_pernet_subsys(&nf_ct_net_ops);
 	inet_frags_fini(&nf_frags);
-
-	nf_init_frags.low_thresh = 0;
-	nf_ct_frag6_evictor();
 }
diff --git a/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c b/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c
new file mode 100644
index 00000000000..abfe75a2e31
--- /dev/null
+++ b/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c
@@ -0,0 +1,288 @@
+/*
+ * 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.
+ *
+ * Development of IPv6 NAT funded by Astaro.
+ */
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/skbuff.h>
+#include <linux/ipv6.h>
+#include <linux/netfilter.h>
+#include <linux/netfilter_ipv6.h>
+#include <net/secure_seq.h>
+#include <net/checksum.h>
+#include <net/ip6_checksum.h>
+#include <net/ip6_route.h>
+#include <net/ipv6.h>
+
+#include <net/netfilter/nf_conntrack_core.h>
+#include <net/netfilter/nf_conntrack.h>
+#include <net/netfilter/nf_nat_core.h>
+#include <net/netfilter/nf_nat_l3proto.h>
+#include <net/netfilter/nf_nat_l4proto.h>
+
+static const struct nf_nat_l3proto nf_nat_l3proto_ipv6;
+
+#ifdef CONFIG_XFRM
+static void nf_nat_ipv6_decode_session(struct sk_buff *skb,
+				       const struct nf_conn *ct,
+				       enum ip_conntrack_dir dir,
+				       unsigned long statusbit,
+				       struct flowi *fl)
+{
+	const struct nf_conntrack_tuple *t = &ct->tuplehash[dir].tuple;
+	struct flowi6 *fl6 = &fl->u.ip6;
+
+	if (ct->status & statusbit) {
+		fl6->daddr = t->dst.u3.in6;
+		if (t->dst.protonum == IPPROTO_TCP ||
+		    t->dst.protonum == IPPROTO_UDP ||
+		    t->dst.protonum == IPPROTO_UDPLITE ||
+		    t->dst.protonum == IPPROTO_DCCP ||
+		    t->dst.protonum == IPPROTO_SCTP)
+			fl6->fl6_dport = t->dst.u.all;
+	}
+
+	statusbit ^= IPS_NAT_MASK;
+
+	if (ct->status & statusbit) {
+		fl6->saddr = t->src.u3.in6;
+		if (t->dst.protonum == IPPROTO_TCP ||
+		    t->dst.protonum == IPPROTO_UDP ||
+		    t->dst.protonum == IPPROTO_UDPLITE ||
+		    t->dst.protonum == IPPROTO_DCCP ||
+		    t->dst.protonum == IPPROTO_SCTP)
+			fl6->fl6_sport = t->src.u.all;
+	}
+}
+#endif
+
+static bool nf_nat_ipv6_in_range(const struct nf_conntrack_tuple *t,
+				 const struct nf_nat_range *range)
+{
+	return ipv6_addr_cmp(&t->src.u3.in6, &range->min_addr.in6) >= 0 &&
+	       ipv6_addr_cmp(&t->src.u3.in6, &range->max_addr.in6) <= 0;
+}
+
+static u32 nf_nat_ipv6_secure_port(const struct nf_conntrack_tuple *t,
+				   __be16 dport)
+{
+	return secure_ipv6_port_ephemeral(t->src.u3.ip6, t->dst.u3.ip6, dport);
+}
+
+static bool nf_nat_ipv6_manip_pkt(struct sk_buff *skb,
+				  unsigned int iphdroff,
+				  const struct nf_nat_l4proto *l4proto,
+				  const struct nf_conntrack_tuple *target,
+				  enum nf_nat_manip_type maniptype)
+{
+	struct ipv6hdr *ipv6h;
+	__be16 frag_off;
+	int hdroff;
+	u8 nexthdr;
+
+	if (!skb_make_writable(skb, iphdroff + sizeof(*ipv6h)))
+		return false;
+
+	ipv6h = (void *)skb->data + iphdroff;
+	nexthdr = ipv6h->nexthdr;
+	hdroff = ipv6_skip_exthdr(skb, iphdroff + sizeof(*ipv6h),
+				  &nexthdr, &frag_off);
+	if (hdroff < 0)
+		goto manip_addr;
+
+	if ((frag_off & htons(~0x7)) == 0 &&
+	    !l4proto->manip_pkt(skb, &nf_nat_l3proto_ipv6, iphdroff, hdroff,
+				target, maniptype))
+		return false;
+manip_addr:
+	if (maniptype == NF_NAT_MANIP_SRC)
+		ipv6h->saddr = target->src.u3.in6;
+	else
+		ipv6h->daddr = target->dst.u3.in6;
+
+	return true;
+}
+
+static void nf_nat_ipv6_csum_update(struct sk_buff *skb,
+				    unsigned int iphdroff, __sum16 *check,
+				    const struct nf_conntrack_tuple *t,
+				    enum nf_nat_manip_type maniptype)
+{
+	const struct ipv6hdr *ipv6h = (struct ipv6hdr *)(skb->data + iphdroff);
+	const struct in6_addr *oldip, *newip;
+
+	if (maniptype == NF_NAT_MANIP_SRC) {
+		oldip = &ipv6h->saddr;
+		newip = &t->src.u3.in6;
+	} else {
+		oldip = &ipv6h->daddr;
+		newip = &t->dst.u3.in6;
+	}
+	inet_proto_csum_replace16(check, skb, oldip->s6_addr32,
+				  newip->s6_addr32, 1);
+}
+
+static void nf_nat_ipv6_csum_recalc(struct sk_buff *skb,
+				    u8 proto, void *data, __sum16 *check,
+				    int datalen, int oldlen)
+{
+	const struct ipv6hdr *ipv6h = ipv6_hdr(skb);
+	struct rt6_info *rt = (struct rt6_info *)skb_dst(skb);
+
+	if (skb->ip_summed != CHECKSUM_PARTIAL) {
+		if (!(rt->rt6i_flags & RTF_LOCAL) &&
+		    (!skb->dev || skb->dev->features & NETIF_F_V6_CSUM)) {
+			skb->ip_summed = CHECKSUM_PARTIAL;
+			skb->csum_start = skb_headroom(skb) +
+					  skb_network_offset(skb) +
+					  (data - (void *)skb->data);
+			skb->csum_offset = (void *)check - data;
+			*check = ~csum_ipv6_magic(&ipv6h->saddr, &ipv6h->daddr,
+						  datalen, proto, 0);
+		} else {
+			*check = 0;
+			*check = csum_ipv6_magic(&ipv6h->saddr, &ipv6h->daddr,
+						 datalen, proto,
+						 csum_partial(data, datalen,
+							      0));
+			if (proto == IPPROTO_UDP && !*check)
+				*check = CSUM_MANGLED_0;
+		}
+	} else
+		inet_proto_csum_replace2(check, skb,
+					 htons(oldlen), htons(datalen), 1);
+}
+
+static int nf_nat_ipv6_nlattr_to_range(struct nlattr *tb[],
+				       struct nf_nat_range *range)
+{
+	if (tb[CTA_NAT_V6_MINIP]) {
+		nla_memcpy(&range->min_addr.ip6, tb[CTA_NAT_V6_MINIP],
+			   sizeof(struct in6_addr));
+		range->flags |= NF_NAT_RANGE_MAP_IPS;
+	}
+
+	if (tb[CTA_NAT_V6_MAXIP])
+		nla_memcpy(&range->max_addr.ip6, tb[CTA_NAT_V6_MAXIP],
+			   sizeof(struct in6_addr));
+	else
+		range->max_addr = range->min_addr;
+
+	return 0;
+}
+
+static const struct nf_nat_l3proto nf_nat_l3proto_ipv6 = {
+	.l3proto		= NFPROTO_IPV6,
+	.secure_port		= nf_nat_ipv6_secure_port,
+	.in_range		= nf_nat_ipv6_in_range,
+	.manip_pkt		= nf_nat_ipv6_manip_pkt,
+	.csum_update		= nf_nat_ipv6_csum_update,
+	.csum_recalc		= nf_nat_ipv6_csum_recalc,
+	.nlattr_to_range	= nf_nat_ipv6_nlattr_to_range,
+#ifdef CONFIG_XFRM
+	.decode_session	= nf_nat_ipv6_decode_session,
+#endif
+};
+
+int nf_nat_icmpv6_reply_translation(struct sk_buff *skb,
+				    struct nf_conn *ct,
+				    enum ip_conntrack_info ctinfo,
+				    unsigned int hooknum,
+				    unsigned int hdrlen)
+{
+	struct {
+		struct icmp6hdr	icmp6;
+		struct ipv6hdr	ip6;
+	} *inside;
+	enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
+	enum nf_nat_manip_type manip = HOOK2MANIP(hooknum);
+	const struct nf_nat_l4proto *l4proto;
+	struct nf_conntrack_tuple target;
+	unsigned long statusbit;
+
+	NF_CT_ASSERT(ctinfo == IP_CT_RELATED || ctinfo == IP_CT_RELATED_REPLY);
+
+	if (!skb_make_writable(skb, hdrlen + sizeof(*inside)))
+		return 0;
+	if (nf_ip6_checksum(skb, hooknum, hdrlen, IPPROTO_ICMPV6))
+		return 0;
+
+	inside = (void *)skb->data + hdrlen;
+	if (inside->icmp6.icmp6_type == NDISC_REDIRECT) {
+		if ((ct->status & IPS_NAT_DONE_MASK) != IPS_NAT_DONE_MASK)
+			return 0;
+		if (ct->status & IPS_NAT_MASK)
+			return 0;
+	}
+
+	if (manip == NF_NAT_MANIP_SRC)
+		statusbit = IPS_SRC_NAT;
+	else
+		statusbit = IPS_DST_NAT;
+
+	/* Invert if this is reply direction */
+	if (dir == IP_CT_DIR_REPLY)
+		statusbit ^= IPS_NAT_MASK;
+
+	if (!(ct->status & statusbit))
+		return 1;
+
+	l4proto = __nf_nat_l4proto_find(NFPROTO_IPV6, inside->ip6.nexthdr);
+	if (!nf_nat_ipv6_manip_pkt(skb, hdrlen + sizeof(inside->icmp6),
+				   l4proto, &ct->tuplehash[!dir].tuple, !manip))
+		return 0;
+
+	if (skb->ip_summed != CHECKSUM_PARTIAL) {
+		struct ipv6hdr *ipv6h = ipv6_hdr(skb);
+		inside = (void *)skb->data + hdrlen;
+		inside->icmp6.icmp6_cksum = 0;
+		inside->icmp6.icmp6_cksum =
+			csum_ipv6_magic(&ipv6h->saddr, &ipv6h->daddr,
+					skb->len - hdrlen, IPPROTO_ICMPV6,
+					csum_partial(&inside->icmp6,
+						     skb->len - hdrlen, 0));
+	}
+
+	nf_ct_invert_tuplepr(&target, &ct->tuplehash[!dir].tuple);
+	l4proto = __nf_nat_l4proto_find(NFPROTO_IPV6, IPPROTO_ICMPV6);
+	if (!nf_nat_ipv6_manip_pkt(skb, 0, l4proto, &target, manip))
+		return 0;
+
+	return 1;
+}
+EXPORT_SYMBOL_GPL(nf_nat_icmpv6_reply_translation);
+
+static int __init nf_nat_l3proto_ipv6_init(void)
+{
+	int err;
+
+	err = nf_nat_l4proto_register(NFPROTO_IPV6, &nf_nat_l4proto_icmpv6);
+	if (err < 0)
+		goto err1;
+	err = nf_nat_l3proto_register(&nf_nat_l3proto_ipv6);
+	if (err < 0)
+		goto err2;
+	return err;
+
+err2:
+	nf_nat_l4proto_unregister(NFPROTO_IPV6, &nf_nat_l4proto_icmpv6);
+err1:
+	return err;
+}
+
+static void __exit nf_nat_l3proto_ipv6_exit(void)
+{
+	nf_nat_l3proto_unregister(&nf_nat_l3proto_ipv6);
+	nf_nat_l4proto_unregister(NFPROTO_IPV6, &nf_nat_l4proto_icmpv6);
+}
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("nf-nat-" __stringify(AF_INET6));
+
+module_init(nf_nat_l3proto_ipv6_init);
+module_exit(nf_nat_l3proto_ipv6_exit);
diff --git a/net/ipv6/netfilter/nf_nat_proto_icmpv6.c b/net/ipv6/netfilter/nf_nat_proto_icmpv6.c
new file mode 100644
index 00000000000..5d6da784305
--- /dev/null
+++ b/net/ipv6/netfilter/nf_nat_proto_icmpv6.c
@@ -0,0 +1,90 @@
+/*
+ * 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 IPv4 ICMP NAT code. Development of IPv6
+ * NAT funded by Astaro.
+ */
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/icmpv6.h>
+
+#include <linux/netfilter.h>
+#include <net/netfilter/nf_nat.h>
+#include <net/netfilter/nf_nat_core.h>
+#include <net/netfilter/nf_nat_l3proto.h>
+#include <net/netfilter/nf_nat_l4proto.h>
+
+static bool
+icmpv6_in_range(const struct nf_conntrack_tuple *tuple,
+		enum nf_nat_manip_type maniptype,
+		const union nf_conntrack_man_proto *min,
+		const union nf_conntrack_man_proto *max)
+{
+	return ntohs(tuple->src.u.icmp.id) >= ntohs(min->icmp.id) &&
+	       ntohs(tuple->src.u.icmp.id) <= ntohs(max->icmp.id);
+}
+
+static void
+icmpv6_unique_tuple(const struct nf_nat_l3proto *l3proto,
+		    struct nf_conntrack_tuple *tuple,
+		    const struct nf_nat_range *range,
+		    enum nf_nat_manip_type maniptype,
+		    const struct nf_conn *ct)
+{
+	static u16 id;
+	unsigned int range_size;
+	unsigned int i;
+
+	range_size = ntohs(range->max_proto.icmp.id) -
+		     ntohs(range->min_proto.icmp.id) + 1;
+
+	if (!(range->flags & NF_NAT_RANGE_PROTO_SPECIFIED))
+		range_size = 0xffff;
+
+	for (i = 0; ; ++id) {
+		tuple->src.u.icmp.id = htons(ntohs(range->min_proto.icmp.id) +
+					     (id % range_size));
+		if (++i == range_size || !nf_nat_used_tuple(tuple, ct))
+			return;
+	}
+}
+
+static bool
+icmpv6_manip_pkt(struct sk_buff *skb,
+		 const struct nf_nat_l3proto *l3proto,
+		 unsigned int iphdroff, unsigned int hdroff,
+		 const struct nf_conntrack_tuple *tuple,
+		 enum nf_nat_manip_type maniptype)
+{
+	struct icmp6hdr *hdr;
+
+	if (!skb_make_writable(skb, hdroff + sizeof(*hdr)))
+		return false;
+
+	hdr = (struct icmp6hdr *)(skb->data + hdroff);
+	l3proto->csum_update(skb, iphdroff, &hdr->icmp6_cksum,
+			     tuple, maniptype);
+	if (hdr->icmp6_code == ICMPV6_ECHO_REQUEST ||
+	    hdr->icmp6_code == ICMPV6_ECHO_REPLY) {
+		inet_proto_csum_replace2(&hdr->icmp6_cksum, skb,
+					 hdr->icmp6_identifier,
+					 tuple->src.u.icmp.id, 0);
+		hdr->icmp6_identifier = tuple->src.u.icmp.id;
+	}
+	return true;
+}
+
+const struct nf_nat_l4proto nf_nat_l4proto_icmpv6 = {
+	.l4proto		= IPPROTO_ICMPV6,
+	.manip_pkt		= icmpv6_manip_pkt,
+	.in_range		= icmpv6_in_range,
+	.unique_tuple		= icmpv6_unique_tuple,
+#if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE)
+	.nlattr_to_range	= nf_nat_l4proto_nlattr_to_range,
+#endif
+};
diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c
index da2e92d05c1..745a3204295 100644
--- a/net/ipv6/proc.c
+++ b/net/ipv6/proc.c
@@ -307,10 +307,10 @@ static int __net_init ipv6_proc_init_net(struct net *net)
 		goto proc_dev_snmp6_fail;
 	return 0;
 
+proc_dev_snmp6_fail:
+	proc_net_remove(net, "snmp6");
 proc_snmp6_fail:
 	proc_net_remove(net, "sockstat6");
-proc_dev_snmp6_fail:
-	proc_net_remove(net, "dev_snmp6");
 	return -ENOMEM;
 }
 
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index ef0579d5bca..d8e95c77db9 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -107,21 +107,20 @@ found:
  *	0 - deliver
  *	1 - block
  */
-static __inline__ int icmpv6_filter(struct sock *sk, struct sk_buff *skb)
+static int icmpv6_filter(const struct sock *sk, const struct sk_buff *skb)
 {
-	struct icmp6hdr *icmph;
-	struct raw6_sock *rp = raw6_sk(sk);
-
-	if (pskb_may_pull(skb, sizeof(struct icmp6hdr))) {
-		__u32 *data = &rp->filter.data[0];
-		int bit_nr;
+	struct icmp6hdr *_hdr;
+	const struct icmp6hdr *hdr;
 
-		icmph = (struct icmp6hdr *) skb->data;
-		bit_nr = icmph->icmp6_type;
+	hdr = skb_header_pointer(skb, skb_transport_offset(skb),
+				 sizeof(_hdr), &_hdr);
+	if (hdr) {
+		const __u32 *data = &raw6_sk(sk)->filter.data[0];
+		unsigned int type = hdr->icmp6_type;
 
-		return (data[bit_nr >> 5] & (1 << (bit_nr & 31))) != 0;
+		return (data[type >> 5] & (1U << (type & 31))) != 0;
 	}
-	return 0;
+	return 1;
 }
 
 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
@@ -1251,7 +1250,8 @@ static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
 		   sk_wmem_alloc_get(sp),
 		   sk_rmem_alloc_get(sp),
 		   0, 0L, 0,
-		   sock_i_uid(sp), 0,
+		   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)),
+		   0,
 		   sock_i_ino(sp),
 		   atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
 }
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index 4ff9af628e7..da8a4e301b1 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -65,36 +65,8 @@ struct ip6frag_skb_cb
 #define FRAG6_CB(skb)	((struct ip6frag_skb_cb*)((skb)->cb))
 
 
-/*
- *	Equivalent of ipv4 struct ipq
- */
-
-struct frag_queue
-{
-	struct inet_frag_queue	q;
-
-	__be32			id;		/* fragment id		*/
-	u32			user;
-	struct in6_addr		saddr;
-	struct in6_addr		daddr;
-
-	int			iif;
-	unsigned int		csum;
-	__u16			nhoffset;
-};
-
 static struct inet_frags ip6_frags;
 
-int ip6_frag_nqueues(struct net *net)
-{
-	return net->ipv6.frags.nqueues;
-}
-
-int ip6_frag_mem(struct net *net)
-{
-	return atomic_read(&net->ipv6.frags.mem);
-}
-
 static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *prev,
 			  struct net_device *dev);
 
@@ -159,46 +131,18 @@ void ip6_frag_init(struct inet_frag_queue *q, void *a)
 }
 EXPORT_SYMBOL(ip6_frag_init);
 
-/* Destruction primitives. */
-
-static __inline__ void fq_put(struct frag_queue *fq)
-{
-	inet_frag_put(&fq->q, &ip6_frags);
-}
-
-/* Kill fq entry. It is not destroyed immediately,
- * because caller (and someone more) holds reference count.
- */
-static __inline__ void fq_kill(struct frag_queue *fq)
-{
-	inet_frag_kill(&fq->q, &ip6_frags);
-}
-
-static void ip6_evictor(struct net *net, struct inet6_dev *idev)
+void ip6_expire_frag_queue(struct net *net, struct frag_queue *fq,
+			   struct inet_frags *frags)
 {
-	int evicted;
-
-	evicted = inet_frag_evictor(&net->ipv6.frags, &ip6_frags);
-	if (evicted)
-		IP6_ADD_STATS_BH(net, idev, IPSTATS_MIB_REASMFAILS, evicted);
-}
-
-static void ip6_frag_expire(unsigned long data)
-{
-	struct frag_queue *fq;
 	struct net_device *dev = NULL;
-	struct net *net;
-
-	fq = container_of((struct inet_frag_queue *)data, struct frag_queue, q);
 
 	spin_lock(&fq->q.lock);
 
 	if (fq->q.last_in & INET_FRAG_COMPLETE)
 		goto out;
 
-	fq_kill(fq);
+	inet_frag_kill(&fq->q, frags);
 
-	net = container_of(fq->q.net, struct net, ipv6.frags);
 	rcu_read_lock();
 	dev = dev_get_by_index_rcu(net, fq->iif);
 	if (!dev)
@@ -222,7 +166,19 @@ out_rcu_unlock:
 	rcu_read_unlock();
 out:
 	spin_unlock(&fq->q.lock);
-	fq_put(fq);
+	inet_frag_put(&fq->q, frags);
+}
+EXPORT_SYMBOL(ip6_expire_frag_queue);
+
+static void ip6_frag_expire(unsigned long data)
+{
+	struct frag_queue *fq;
+	struct net *net;
+
+	fq = container_of((struct inet_frag_queue *)data, struct frag_queue, q);
+	net = container_of(fq->q.net, struct net, ipv6.frags);
+
+	ip6_expire_frag_queue(net, fq, &ip6_frags);
 }
 
 static __inline__ struct frag_queue *
@@ -391,7 +347,7 @@ found:
 	return -1;
 
 discard_fq:
-	fq_kill(fq);
+	inet_frag_kill(&fq->q, &ip6_frags);
 err:
 	IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
 		      IPSTATS_MIB_REASMFAILS);
@@ -417,7 +373,7 @@ static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *prev,
 	unsigned int nhoff;
 	int sum_truesize;
 
-	fq_kill(fq);
+	inet_frag_kill(&fq->q, &ip6_frags);
 
 	/* Make the one we just received the head. */
 	if (prev) {
@@ -550,6 +506,7 @@ static int ipv6_frag_rcv(struct sk_buff *skb)
 	struct frag_queue *fq;
 	const struct ipv6hdr *hdr = ipv6_hdr(skb);
 	struct net *net = dev_net(skb_dst(skb)->dev);
+	int evicted;
 
 	IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_REASMREQDS);
 
@@ -574,8 +531,10 @@ static int ipv6_frag_rcv(struct sk_buff *skb)
 		return 1;
 	}
 
-	if (atomic_read(&net->ipv6.frags.mem) > net->ipv6.frags.high_thresh)
-		ip6_evictor(net, ip6_dst_idev(skb_dst(skb)));
+	evicted = inet_frag_evictor(&net->ipv6.frags, &ip6_frags, false);
+	if (evicted)
+		IP6_ADD_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
+				 IPSTATS_MIB_REASMFAILS, evicted);
 
 	fq = fq_find(net, fhdr->identification, &hdr->saddr, &hdr->daddr);
 	if (fq != NULL) {
@@ -586,7 +545,7 @@ static int ipv6_frag_rcv(struct sk_buff *skb)
 		ret = ip6_frag_queue(fq, skb, fhdr, IP6CB(skb)->nhoff);
 
 		spin_unlock(&fq->q.lock);
-		fq_put(fq);
+		inet_frag_put(&fq->q, &ip6_frags);
 		return ret;
 	}
 
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index cf02cb97bbd..7c7e963260e 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -222,11 +222,11 @@ static const u32 ip6_template_metrics[RTAX_MAX] = {
 	[RTAX_HOPLIMIT - 1] = 255,
 };
 
-static struct rt6_info ip6_null_entry_template = {
+static const struct rt6_info ip6_null_entry_template = {
 	.dst = {
 		.__refcnt	= ATOMIC_INIT(1),
 		.__use		= 1,
-		.obsolete	= -1,
+		.obsolete	= DST_OBSOLETE_FORCE_CHK,
 		.error		= -ENETUNREACH,
 		.input		= ip6_pkt_discard,
 		.output		= ip6_pkt_discard_out,
@@ -242,11 +242,11 @@ static struct rt6_info ip6_null_entry_template = {
 static int ip6_pkt_prohibit(struct sk_buff *skb);
 static int ip6_pkt_prohibit_out(struct sk_buff *skb);
 
-static struct rt6_info ip6_prohibit_entry_template = {
+static const struct rt6_info ip6_prohibit_entry_template = {
 	.dst = {
 		.__refcnt	= ATOMIC_INIT(1),
 		.__use		= 1,
-		.obsolete	= -1,
+		.obsolete	= DST_OBSOLETE_FORCE_CHK,
 		.error		= -EACCES,
 		.input		= ip6_pkt_prohibit,
 		.output		= ip6_pkt_prohibit_out,
@@ -257,11 +257,11 @@ static struct rt6_info ip6_prohibit_entry_template = {
 	.rt6i_ref	= ATOMIC_INIT(1),
 };
 
-static struct rt6_info ip6_blk_hole_entry_template = {
+static const struct rt6_info ip6_blk_hole_entry_template = {
 	.dst = {
 		.__refcnt	= ATOMIC_INIT(1),
 		.__use		= 1,
-		.obsolete	= -1,
+		.obsolete	= DST_OBSOLETE_FORCE_CHK,
 		.error		= -EINVAL,
 		.input		= dst_discard,
 		.output		= dst_discard,
@@ -281,13 +281,14 @@ static inline struct rt6_info *ip6_dst_alloc(struct net *net,
 					     struct fib6_table *table)
 {
 	struct rt6_info *rt = dst_alloc(&net->ipv6.ip6_dst_ops, dev,
-					0, DST_OBSOLETE_NONE, flags);
+					0, DST_OBSOLETE_FORCE_CHK, flags);
 
 	if (rt) {
 		struct dst_entry *dst = &rt->dst;
 
 		memset(dst + 1, 0, sizeof(*rt) - sizeof(*dst));
 		rt6_init_peer(rt, table ? &table->tb6_peers : net->ipv6.peers);
+		rt->rt6i_genid = rt_genid(net);
 	}
 	return rt;
 }
@@ -369,15 +370,11 @@ static void ip6_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
 
 static bool rt6_check_expired(const struct rt6_info *rt)
 {
-	struct rt6_info *ort = NULL;
-
 	if (rt->rt6i_flags & RTF_EXPIRES) {
 		if (time_after(jiffies, rt->dst.expires))
 			return true;
 	} else if (rt->dst.from) {
-		ort = (struct rt6_info *) rt->dst.from;
-		return (ort->rt6i_flags & RTF_EXPIRES) &&
-			time_after(jiffies, ort->dst.expires);
+		return rt6_check_expired((struct rt6_info *) rt->dst.from);
 	}
 	return false;
 }
@@ -451,10 +448,9 @@ static void rt6_probe(struct rt6_info *rt)
 	 * Router Reachability Probe MUST be rate-limited
 	 * to no more than one per minute.
 	 */
-	rcu_read_lock();
 	neigh = rt ? rt->n : NULL;
 	if (!neigh || (neigh->nud_state & NUD_VALID))
-		goto out;
+		return;
 	read_lock_bh(&neigh->lock);
 	if (!(neigh->nud_state & NUD_VALID) &&
 	    time_after(jiffies, neigh->updated + rt->rt6i_idev->cnf.rtr_probe_interval)) {
@@ -470,8 +466,6 @@ static void rt6_probe(struct rt6_info *rt)
 	} else {
 		read_unlock_bh(&neigh->lock);
 	}
-out:
-	rcu_read_unlock();
 }
 #else
 static inline void rt6_probe(struct rt6_info *rt)
@@ -498,7 +492,6 @@ static inline int rt6_check_neigh(struct rt6_info *rt)
 	struct neighbour *neigh;
 	int m;
 
-	rcu_read_lock();
 	neigh = rt->n;
 	if (rt->rt6i_flags & RTF_NONEXTHOP ||
 	    !(rt->rt6i_flags & RTF_GATEWAY))
@@ -516,7 +509,6 @@ static inline int rt6_check_neigh(struct rt6_info *rt)
 		read_unlock_bh(&neigh->lock);
 	} else
 		m = 0;
-	rcu_read_unlock();
 	return m;
 }
 
@@ -965,7 +957,7 @@ struct dst_entry * ip6_route_output(struct net *net, const struct sock *sk,
 {
 	int flags = 0;
 
-	fl6->flowi6_iif = net->loopback_dev->ifindex;
+	fl6->flowi6_iif = LOOPBACK_IFINDEX;
 
 	if ((sk && sk->sk_bound_dev_if) || rt6_need_strict(&fl6->daddr))
 		flags |= RT6_LOOKUP_F_IFACE;
@@ -1031,6 +1023,13 @@ static struct dst_entry *ip6_dst_check(struct dst_entry *dst, u32 cookie)
 
 	rt = (struct rt6_info *) dst;
 
+	/* All IPV6 dsts are created with ->obsolete set to the value
+	 * DST_OBSOLETE_FORCE_CHK which forces validation calls down
+	 * into this function always.
+	 */
+	if (rt->rt6i_genid != rt_genid(dev_net(rt->dst.dev)))
+		return NULL;
+
 	if (rt->rt6i_node && (rt->rt6i_node->fn_sernum == cookie)) {
 		if (rt->rt6i_peer_genid != rt6_peer_genid()) {
 			if (!rt6_has_peer(rt))
@@ -1397,8 +1396,6 @@ int ip6_route_add(struct fib6_config *cfg)
 		goto out;
 	}
 
-	rt->dst.obsolete = -1;
-
 	if (cfg->fc_flags & RTF_EXPIRES)
 		rt6_set_expires(rt, jiffies +
 				clock_t_to_jiffies(cfg->fc_expires));
@@ -1463,8 +1460,21 @@ int ip6_route_add(struct fib6_config *cfg)
 		}
 		rt->dst.output = ip6_pkt_discard_out;
 		rt->dst.input = ip6_pkt_discard;
-		rt->dst.error = -ENETUNREACH;
 		rt->rt6i_flags = RTF_REJECT|RTF_NONEXTHOP;
+		switch (cfg->fc_type) {
+		case RTN_BLACKHOLE:
+			rt->dst.error = -EINVAL;
+			break;
+		case RTN_PROHIBIT:
+			rt->dst.error = -EACCES;
+			break;
+		case RTN_THROW:
+			rt->dst.error = -EAGAIN;
+			break;
+		default:
+			rt->dst.error = -ENETUNREACH;
+			break;
+		}
 		goto install_route;
 	}
 
@@ -1583,17 +1593,18 @@ static int __ip6_del_rt(struct rt6_info *rt, struct nl_info *info)
 	struct fib6_table *table;
 	struct net *net = dev_net(rt->dst.dev);
 
-	if (rt == net->ipv6.ip6_null_entry)
-		return -ENOENT;
+	if (rt == net->ipv6.ip6_null_entry) {
+		err = -ENOENT;
+		goto out;
+	}
 
 	table = rt->rt6i_table;
 	write_lock_bh(&table->tb6_lock);
-
 	err = fib6_del(rt, info);
-	dst_release(&rt->dst);
-
 	write_unlock_bh(&table->tb6_lock);
 
+out:
+	dst_release(&rt->dst);
 	return err;
 }
 
@@ -1829,7 +1840,7 @@ static struct rt6_info *rt6_get_route_info(struct net *net,
 	if (!table)
 		return NULL;
 
-	write_lock_bh(&table->tb6_lock);
+	read_lock_bh(&table->tb6_lock);
 	fn = fib6_locate(&table->tb6_root, prefix ,prefixlen, NULL, 0);
 	if (!fn)
 		goto out;
@@ -1845,7 +1856,7 @@ static struct rt6_info *rt6_get_route_info(struct net *net,
 		break;
 	}
 out:
-	write_unlock_bh(&table->tb6_lock);
+	read_unlock_bh(&table->tb6_lock);
 	return rt;
 }
 
@@ -1861,7 +1872,7 @@ static struct rt6_info *rt6_add_route_info(struct net *net,
 		.fc_dst_len	= prefixlen,
 		.fc_flags	= RTF_GATEWAY | RTF_ADDRCONF | RTF_ROUTEINFO |
 				  RTF_UP | RTF_PREF(pref),
-		.fc_nlinfo.pid = 0,
+		.fc_nlinfo.portid = 0,
 		.fc_nlinfo.nlh = NULL,
 		.fc_nlinfo.nl_net = net,
 	};
@@ -1888,7 +1899,7 @@ struct rt6_info *rt6_get_dflt_router(const struct in6_addr *addr, struct net_dev
 	if (!table)
 		return NULL;
 
-	write_lock_bh(&table->tb6_lock);
+	read_lock_bh(&table->tb6_lock);
 	for (rt = table->tb6_root.leaf; rt; rt=rt->dst.rt6_next) {
 		if (dev == rt->dst.dev &&
 		    ((rt->rt6i_flags & (RTF_ADDRCONF | RTF_DEFAULT)) == (RTF_ADDRCONF | RTF_DEFAULT)) &&
@@ -1897,7 +1908,7 @@ struct rt6_info *rt6_get_dflt_router(const struct in6_addr *addr, struct net_dev
 	}
 	if (rt)
 		dst_hold(&rt->dst);
-	write_unlock_bh(&table->tb6_lock);
+	read_unlock_bh(&table->tb6_lock);
 	return rt;
 }
 
@@ -1911,7 +1922,7 @@ struct rt6_info *rt6_add_dflt_router(const struct in6_addr *gwaddr,
 		.fc_ifindex	= dev->ifindex,
 		.fc_flags	= RTF_GATEWAY | RTF_ADDRCONF | RTF_DEFAULT |
 				  RTF_UP | RTF_EXPIRES | RTF_PREF(pref),
-		.fc_nlinfo.pid = 0,
+		.fc_nlinfo.portid = 0,
 		.fc_nlinfo.nlh = NULL,
 		.fc_nlinfo.nl_net = dev_net(dev),
 	};
@@ -2080,7 +2091,6 @@ struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
 	rt->dst.input = ip6_input;
 	rt->dst.output = ip6_output;
 	rt->rt6i_idev = idev;
-	rt->dst.obsolete = -1;
 
 	rt->rt6i_flags = RTF_UP | RTF_NONEXTHOP;
 	if (anycast)
@@ -2261,14 +2271,18 @@ static int rtm_to_fib6_config(struct sk_buff *skb, struct nlmsghdr *nlh,
 	cfg->fc_src_len = rtm->rtm_src_len;
 	cfg->fc_flags = RTF_UP;
 	cfg->fc_protocol = rtm->rtm_protocol;
+	cfg->fc_type = rtm->rtm_type;
 
-	if (rtm->rtm_type == RTN_UNREACHABLE)
+	if (rtm->rtm_type == RTN_UNREACHABLE ||
+	    rtm->rtm_type == RTN_BLACKHOLE ||
+	    rtm->rtm_type == RTN_PROHIBIT ||
+	    rtm->rtm_type == RTN_THROW)
 		cfg->fc_flags |= RTF_REJECT;
 
 	if (rtm->rtm_type == RTN_LOCAL)
 		cfg->fc_flags |= RTF_LOCAL;
 
-	cfg->fc_nlinfo.pid = NETLINK_CB(skb).pid;
+	cfg->fc_nlinfo.portid = NETLINK_CB(skb).portid;
 	cfg->fc_nlinfo.nlh = nlh;
 	cfg->fc_nlinfo.nl_net = sock_net(skb->sk);
 
@@ -2359,7 +2373,7 @@ static inline size_t rt6_nlmsg_size(void)
 static int rt6_fill_node(struct net *net,
 			 struct sk_buff *skb, struct rt6_info *rt,
 			 struct in6_addr *dst, struct in6_addr *src,
-			 int iif, int type, u32 pid, u32 seq,
+			 int iif, int type, u32 portid, u32 seq,
 			 int prefix, int nowait, unsigned int flags)
 {
 	struct rtmsg *rtm;
@@ -2375,7 +2389,7 @@ static int rt6_fill_node(struct net *net,
 		}
 	}
 
-	nlh = nlmsg_put(skb, pid, seq, type, sizeof(*rtm), flags);
+	nlh = nlmsg_put(skb, portid, seq, type, sizeof(*rtm), flags);
 	if (!nlh)
 		return -EMSGSIZE;
 
@@ -2391,8 +2405,22 @@ static int rt6_fill_node(struct net *net,
 	rtm->rtm_table = table;
 	if (nla_put_u32(skb, RTA_TABLE, table))
 		goto nla_put_failure;
-	if (rt->rt6i_flags & RTF_REJECT)
-		rtm->rtm_type = RTN_UNREACHABLE;
+	if (rt->rt6i_flags & RTF_REJECT) {
+		switch (rt->dst.error) {
+		case -EINVAL:
+			rtm->rtm_type = RTN_BLACKHOLE;
+			break;
+		case -EACCES:
+			rtm->rtm_type = RTN_PROHIBIT;
+			break;
+		case -EAGAIN:
+			rtm->rtm_type = RTN_THROW;
+			break;
+		default:
+			rtm->rtm_type = RTN_UNREACHABLE;
+			break;
+		}
+	}
 	else if (rt->rt6i_flags & RTF_LOCAL)
 		rtm->rtm_type = RTN_LOCAL;
 	else if (rt->dst.dev && (rt->dst.dev->flags & IFF_LOOPBACK))
@@ -2465,27 +2493,19 @@ static int rt6_fill_node(struct net *net,
 	if (rtnetlink_put_metrics(skb, dst_metrics_ptr(&rt->dst)) < 0)
 		goto nla_put_failure;
 
-	rcu_read_lock();
 	n = rt->n;
 	if (n) {
-		if (nla_put(skb, RTA_GATEWAY, 16, &n->primary_key) < 0) {
-			rcu_read_unlock();
+		if (nla_put(skb, RTA_GATEWAY, 16, &n->primary_key) < 0)
 			goto nla_put_failure;
-		}
 	}
-	rcu_read_unlock();
 
 	if (rt->dst.dev &&
 	    nla_put_u32(skb, RTA_OIF, rt->dst.dev->ifindex))
 		goto nla_put_failure;
 	if (nla_put_u32(skb, RTA_PRIORITY, rt->rt6i_metric))
 		goto nla_put_failure;
-	if (!(rt->rt6i_flags & RTF_EXPIRES))
-		expires = 0;
-	else if (rt->dst.expires - jiffies < INT_MAX)
-		expires = rt->dst.expires - jiffies;
-	else
-		expires = INT_MAX;
+
+	expires = (rt->rt6i_flags & RTF_EXPIRES) ? rt->dst.expires - jiffies : 0;
 
 	if (rtnl_put_cacheinfo(skb, &rt->dst, 0, expires, rt->dst.error) < 0)
 		goto nla_put_failure;
@@ -2510,7 +2530,7 @@ int rt6_dump_route(struct rt6_info *rt, void *p_arg)
 
 	return rt6_fill_node(arg->net,
 		     arg->skb, rt, NULL, NULL, 0, RTM_NEWROUTE,
-		     NETLINK_CB(arg->cb->skb).pid, arg->cb->nlh->nlmsg_seq,
+		     NETLINK_CB(arg->cb->skb).portid, arg->cb->nlh->nlmsg_seq,
 		     prefix, 0, NLM_F_MULTI);
 }
 
@@ -2590,14 +2610,14 @@ static int inet6_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void
 	skb_dst_set(skb, &rt->dst);
 
 	err = rt6_fill_node(net, skb, rt, &fl6.daddr, &fl6.saddr, iif,
-			    RTM_NEWROUTE, NETLINK_CB(in_skb).pid,
+			    RTM_NEWROUTE, NETLINK_CB(in_skb).portid,
 			    nlh->nlmsg_seq, 0, 0, 0);
 	if (err < 0) {
 		kfree_skb(skb);
 		goto errout;
 	}
 
-	err = rtnl_unicast(skb, net, NETLINK_CB(in_skb).pid);
+	err = rtnl_unicast(skb, net, NETLINK_CB(in_skb).portid);
 errout:
 	return err;
 }
@@ -2617,14 +2637,14 @@ void inet6_rt_notify(int event, struct rt6_info *rt, struct nl_info *info)
 		goto errout;
 
 	err = rt6_fill_node(net, skb, rt, NULL, NULL, 0,
-				event, info->pid, seq, 0, 0, 0);
+				event, info->portid, seq, 0, 0, 0);
 	if (err < 0) {
 		/* -EMSGSIZE implies BUG in rt6_nlmsg_size() */
 		WARN_ON(err == -EMSGSIZE);
 		kfree_skb(skb);
 		goto errout;
 	}
-	rtnl_notify(skb, net, info->pid, RTNLGRP_IPV6_ROUTE,
+	rtnl_notify(skb, net, info->portid, RTNLGRP_IPV6_ROUTE,
 		    info->nlh, gfp_any());
 	return;
 errout:
@@ -2679,14 +2699,12 @@ static int rt6_info_route(struct rt6_info *rt, void *p_arg)
 #else
 	seq_puts(m, "00000000000000000000000000000000 00 ");
 #endif
-	rcu_read_lock();
 	n = rt->n;
 	if (n) {
 		seq_printf(m, "%pi6", n->primary_key);
 	} else {
 		seq_puts(m, "00000000000000000000000000000000");
 	}
-	rcu_read_unlock();
 	seq_printf(m, " %08x %08x %08x %08x %8s\n",
 		   rt->rt6i_metric, atomic_read(&rt->dst.__refcnt),
 		   rt->dst.__use, rt->rt6i_flags,
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 3bd1bfc01f8..3ed54ffd8d5 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -545,7 +545,6 @@ static int ipip6_err(struct sk_buff *skb, u32 info)
 
 	err = -ENOENT;
 
-	rcu_read_lock();
 	t = ipip6_tunnel_lookup(dev_net(skb->dev),
 				skb->dev,
 				iph->daddr,
@@ -579,7 +578,6 @@ static int ipip6_err(struct sk_buff *skb, u32 info)
 		t->err_count = 1;
 	t->err_time = jiffies;
 out:
-	rcu_read_unlock();
 	return err;
 }
 
@@ -599,7 +597,6 @@ static int ipip6_rcv(struct sk_buff *skb)
 
 	iph = ip_hdr(skb);
 
-	rcu_read_lock();
 	tunnel = ipip6_tunnel_lookup(dev_net(skb->dev), skb->dev,
 				     iph->saddr, iph->daddr);
 	if (tunnel != NULL) {
@@ -615,7 +612,6 @@ static int ipip6_rcv(struct sk_buff *skb)
 		if ((tunnel->dev->priv_flags & IFF_ISATAP) &&
 		    !isatap_chksrc(skb, iph, tunnel)) {
 			tunnel->dev->stats.rx_errors++;
-			rcu_read_unlock();
 			kfree_skb(skb);
 			return 0;
 		}
@@ -630,12 +626,10 @@ static int ipip6_rcv(struct sk_buff *skb)
 
 		netif_rx(skb);
 
-		rcu_read_unlock();
 		return 0;
 	}
 
 	/* no tunnel matched,  let upstream know, ipsec may handle it */
-	rcu_read_unlock();
 	return 1;
 out:
 	kfree_skb(skb);
diff --git a/net/ipv6/syncookies.c b/net/ipv6/syncookies.c
index bb46061c813..182ab9a85d6 100644
--- a/net/ipv6/syncookies.c
+++ b/net/ipv6/syncookies.c
@@ -190,6 +190,7 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb)
 	ireq = inet_rsk(req);
 	ireq6 = inet6_rsk(req);
 	treq = tcp_rsk(req);
+	treq->listener = NULL;
 
 	if (security_inet_conn_request(sk, skb, req))
 		goto out_free;
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index f49476e2d88..49c890386ce 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -94,6 +94,18 @@ static struct tcp_md5sig_key *tcp_v6_md5_do_lookup(struct sock *sk,
 }
 #endif
 
+static void inet6_sk_rx_dst_set(struct sock *sk, const struct sk_buff *skb)
+{
+	struct dst_entry *dst = skb_dst(skb);
+	const struct rt6_info *rt = (const struct rt6_info *)dst;
+
+	dst_hold(dst);
+	sk->sk_rx_dst = dst;
+	inet_sk(sk)->rx_dst_ifindex = skb->skb_iif;
+	if (rt->rt6i_node)
+		inet6_sk(sk)->rx_dst_cookie = rt->rt6i_node->fn_sernum;
+}
+
 static void tcp_v6_hash(struct sock *sk)
 {
 	if (sk->sk_state != TCP_CLOSE) {
@@ -391,8 +403,9 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 		tp->mtu_info = ntohl(info);
 		if (!sock_owned_by_user(sk))
 			tcp_v6_mtu_reduced(sk);
-		else
-			set_bit(TCP_MTU_REDUCED_DEFERRED, &tp->tsq_flags);
+		else if (!test_and_set_bit(TCP_MTU_REDUCED_DEFERRED,
+					   &tp->tsq_flags))
+			sock_hold(sk);
 		goto out;
 	}
 
@@ -463,7 +476,7 @@ static int tcp_v6_send_synack(struct sock *sk, struct dst_entry *dst,
 	if (!dst && (dst = inet6_csk_route_req(sk, fl6, req)) == NULL)
 		goto done;
 
-	skb = tcp_make_synack(sk, dst, req, rvp);
+	skb = tcp_make_synack(sk, dst, req, rvp, NULL);
 
 	if (skb) {
 		__tcp_v6_send_check(skb, &treq->loc_addr, &treq->rmt_addr);
@@ -750,6 +763,8 @@ static struct sk_buff **tcp6_gro_receive(struct sk_buff **head,
 					 struct sk_buff *skb)
 {
 	const struct ipv6hdr *iph = skb_gro_network_header(skb);
+	__wsum wsum;
+	__sum16 sum;
 
 	switch (skb->ip_summed) {
 	case CHECKSUM_COMPLETE:
@@ -758,11 +773,23 @@ static struct sk_buff **tcp6_gro_receive(struct sk_buff **head,
 			skb->ip_summed = CHECKSUM_UNNECESSARY;
 			break;
 		}
-
-		/* fall through */
-	case CHECKSUM_NONE:
+flush:
 		NAPI_GRO_CB(skb)->flush = 1;
 		return NULL;
+
+	case CHECKSUM_NONE:
+		wsum = ~csum_unfold(csum_ipv6_magic(&iph->saddr, &iph->daddr,
+						    skb_gro_len(skb),
+						    IPPROTO_TCP, 0));
+		sum = csum_fold(skb_checksum(skb,
+					     skb_gro_offset(skb),
+					     skb_gro_len(skb),
+					     wsum));
+		if (sum)
+			goto flush;
+
+		skb->ip_summed = CHECKSUM_UNNECESSARY;
+		break;
 	}
 
 	return tcp_gro_receive(head, skb);
@@ -975,7 +1002,7 @@ static struct sock *tcp_v6_hnd_req(struct sock *sk,struct sk_buff *skb)
 				   &ipv6_hdr(skb)->saddr,
 				   &ipv6_hdr(skb)->daddr, inet6_iif(skb));
 	if (req)
-		return tcp_check_req(sk, skb, req, prev);
+		return tcp_check_req(sk, skb, req, prev, false);
 
 	nsk = __inet6_lookup_established(sock_net(sk), &tcp_hashinfo,
 			&ipv6_hdr(skb)->saddr, th->source,
@@ -1156,7 +1183,6 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
 	}
 have_isn:
 	tcp_rsk(req)->snt_isn = isn;
-	tcp_rsk(req)->snt_synack = tcp_time_stamp;
 
 	if (security_inet_conn_request(sk, skb, req))
 		goto drop_and_release;
@@ -1167,6 +1193,8 @@ have_isn:
 	    want_cookie)
 		goto drop_and_free;
 
+	tcp_rsk(req)->snt_synack = tcp_time_stamp;
+	tcp_rsk(req)->listener = NULL;
 	inet6_csk_reqsk_queue_hash_add(sk, req, TCP_TIMEOUT_INIT);
 	return 0;
 
@@ -1270,6 +1298,7 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
 
 	newsk->sk_gso_type = SKB_GSO_TCPV6;
 	__ip6_dst_store(newsk, dst, NULL, NULL);
+	inet6_sk_rx_dst_set(newsk, skb);
 
 	newtcp6sk = (struct tcp6_sock *)newsk;
 	inet_sk(newsk)->pinet6 = &newtcp6sk->inet6;
@@ -1299,7 +1328,8 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
 	/* Clone pktoptions received with SYN */
 	newnp->pktoptions = NULL;
 	if (treq->pktopts != NULL) {
-		newnp->pktoptions = skb_clone(treq->pktopts, GFP_ATOMIC);
+		newnp->pktoptions = skb_clone(treq->pktopts,
+					      sk_gfp_atomic(sk, GFP_ATOMIC));
 		consume_skb(treq->pktopts);
 		treq->pktopts = NULL;
 		if (newnp->pktoptions)
@@ -1332,9 +1362,7 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
 		newtp->advmss = tcp_sk(sk)->rx_opt.user_mss;
 
 	tcp_initialize_rcv_mss(newsk);
-	if (tcp_rsk(req)->snt_synack)
-		tcp_valid_rtt_meas(newsk,
-		    tcp_time_stamp - tcp_rsk(req)->snt_synack);
+	tcp_synack_rtt_meas(newsk, req);
 	newtp->total_retrans = req->retrans;
 
 	newinet->inet_daddr = newinet->inet_saddr = LOOPBACK4_IPV6;
@@ -1349,7 +1377,8 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
 		 * across. Shucks.
 		 */
 		tcp_md5_do_add(newsk, (union tcp_md5_addr *)&newnp->daddr,
-			       AF_INET6, key->key, key->keylen, GFP_ATOMIC);
+			       AF_INET6, key->key, key->keylen,
+			       sk_gfp_atomic(sk, GFP_ATOMIC));
 	}
 #endif
 
@@ -1442,10 +1471,20 @@ static int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb)
 					       --ANK (980728)
 	 */
 	if (np->rxopt.all)
-		opt_skb = skb_clone(skb, GFP_ATOMIC);
+		opt_skb = skb_clone(skb, sk_gfp_atomic(sk, GFP_ATOMIC));
 
 	if (sk->sk_state == TCP_ESTABLISHED) { /* Fast path */
+		struct dst_entry *dst = sk->sk_rx_dst;
+
 		sock_rps_save_rxhash(sk, skb);
+		if (dst) {
+			if (inet_sk(sk)->rx_dst_ifindex != skb->skb_iif ||
+			    dst->ops->check(dst, np->rx_dst_cookie) == NULL) {
+				dst_release(dst);
+				sk->sk_rx_dst = NULL;
+			}
+		}
+
 		if (tcp_rcv_established(sk, skb, tcp_hdr(skb), skb->len))
 			goto reset;
 		if (opt_skb)
@@ -1674,6 +1713,43 @@ do_time_wait:
 	goto discard_it;
 }
 
+static void tcp_v6_early_demux(struct sk_buff *skb)
+{
+	const struct ipv6hdr *hdr;
+	const struct tcphdr *th;
+	struct sock *sk;
+
+	if (skb->pkt_type != PACKET_HOST)
+		return;
+
+	if (!pskb_may_pull(skb, skb_transport_offset(skb) + sizeof(struct tcphdr)))
+		return;
+
+	hdr = ipv6_hdr(skb);
+	th = tcp_hdr(skb);
+
+	if (th->doff < sizeof(struct tcphdr) / 4)
+		return;
+
+	sk = __inet6_lookup_established(dev_net(skb->dev), &tcp_hashinfo,
+					&hdr->saddr, th->source,
+					&hdr->daddr, ntohs(th->dest),
+					inet6_iif(skb));
+	if (sk) {
+		skb->sk = sk;
+		skb->destructor = sock_edemux;
+		if (sk->sk_state != TCP_TIME_WAIT) {
+			struct dst_entry *dst = sk->sk_rx_dst;
+			struct inet_sock *icsk = inet_sk(sk);
+			if (dst)
+				dst = dst_check(dst, inet6_sk(sk)->rx_dst_cookie);
+			if (dst &&
+			    icsk->rx_dst_ifindex == skb->skb_iif)
+				skb_dst_set_noref(skb, dst);
+		}
+	}
+}
+
 static struct timewait_sock_ops tcp6_timewait_sock_ops = {
 	.twsk_obj_size	= sizeof(struct tcp6_timewait_sock),
 	.twsk_unique	= tcp_twsk_unique,
@@ -1684,6 +1760,7 @@ static const struct inet_connection_sock_af_ops ipv6_specific = {
 	.queue_xmit	   = inet6_csk_xmit,
 	.send_check	   = tcp_v6_send_check,
 	.rebuild_header	   = inet6_sk_rebuild_header,
+	.sk_rx_dst_set	   = inet6_sk_rx_dst_set,
 	.conn_request	   = tcp_v6_conn_request,
 	.syn_recv_sock	   = tcp_v6_syn_recv_sock,
 	.net_header_len	   = sizeof(struct ipv6hdr),
@@ -1715,6 +1792,7 @@ static const struct inet_connection_sock_af_ops ipv6_mapped = {
 	.queue_xmit	   = ip_queue_xmit,
 	.send_check	   = tcp_v4_send_check,
 	.rebuild_header	   = inet_sk_rebuild_header,
+	.sk_rx_dst_set	   = inet_sk_rx_dst_set,
 	.conn_request	   = tcp_v6_conn_request,
 	.syn_recv_sock	   = tcp_v6_syn_recv_sock,
 	.net_header_len	   = sizeof(struct iphdr),
@@ -1764,7 +1842,7 @@ static void tcp_v6_destroy_sock(struct sock *sk)
 #ifdef CONFIG_PROC_FS
 /* Proc filesystem TCPv6 sock list dumping. */
 static void get_openreq6(struct seq_file *seq,
-			 const struct sock *sk, struct request_sock *req, int i, int uid)
+			 const struct sock *sk, struct request_sock *req, int i, kuid_t uid)
 {
 	int ttd = req->expires - jiffies;
 	const struct in6_addr *src = &inet6_rsk(req)->loc_addr;
@@ -1788,7 +1866,7 @@ static void get_openreq6(struct seq_file *seq,
 		   1,   /* timers active (only the expire timer) */
 		   jiffies_to_clock_t(ttd),
 		   req->retrans,
-		   uid,
+		   from_kuid_munged(seq_user_ns(seq), uid),
 		   0,  /* non standard timer */
 		   0, /* open_requests have no inode */
 		   0, req);
@@ -1836,9 +1914,9 @@ static void get_tcp6_sock(struct seq_file *seq, struct sock *sp, int i)
 		   tp->write_seq-tp->snd_una,
 		   (sp->sk_state == TCP_LISTEN) ? sp->sk_ack_backlog : (tp->rcv_nxt - tp->copied_seq),
 		   timer_active,
-		   jiffies_to_clock_t(timer_expires - jiffies),
+		   jiffies_delta_to_clock_t(timer_expires - jiffies),
 		   icsk->icsk_retransmits,
-		   sock_i_uid(sp),
+		   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)),
 		   icsk->icsk_probes_out,
 		   sock_i_ino(sp),
 		   atomic_read(&sp->sk_refcnt), sp,
@@ -1856,10 +1934,7 @@ static void get_timewait6_sock(struct seq_file *seq,
 	const struct in6_addr *dest, *src;
 	__u16 destp, srcp;
 	const struct inet6_timewait_sock *tw6 = inet6_twsk((struct sock *)tw);
-	int ttd = tw->tw_ttd - jiffies;
-
-	if (ttd < 0)
-		ttd = 0;
+	long delta = tw->tw_ttd - jiffies;
 
 	dest = &tw6->tw_v6_daddr;
 	src  = &tw6->tw_v6_rcv_saddr;
@@ -1875,7 +1950,7 @@ static void get_timewait6_sock(struct seq_file *seq,
 		   dest->s6_addr32[0], dest->s6_addr32[1],
 		   dest->s6_addr32[2], dest->s6_addr32[3], destp,
 		   tw->tw_substate, 0, 0,
-		   3, jiffies_to_clock_t(ttd), 0, 0, 0, 0,
+		   3, jiffies_delta_to_clock_t(delta), 0, 0, 0, 0,
 		   atomic_read(&tw->tw_refcnt), tw);
 }
 
@@ -1978,12 +2053,13 @@ struct proto tcpv6_prot = {
 	.compat_setsockopt	= compat_tcp_setsockopt,
 	.compat_getsockopt	= compat_tcp_getsockopt,
 #endif
-#ifdef CONFIG_CGROUP_MEM_RES_CTLR_KMEM
+#ifdef CONFIG_MEMCG_KMEM
 	.proto_cgroup		= tcp_proto_cgroup,
 #endif
 };
 
 static const struct inet6_protocol tcpv6_protocol = {
+	.early_demux	=	tcp_v6_early_demux,
 	.handler	=	tcp_v6_rcv,
 	.err_handler	=	tcp_v6_err,
 	.gso_send_check	=	tcp_v6_gso_send_check,
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 99d0077b56b..fc9997260a6 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -394,6 +394,17 @@ try_again:
 	}
 	if (unlikely(err)) {
 		trace_kfree_skb(skb, udpv6_recvmsg);
+		if (!peeked) {
+			atomic_inc(&sk->sk_drops);
+			if (is_udp4)
+				UDP_INC_STATS_USER(sock_net(sk),
+						   UDP_MIB_INERRORS,
+						   is_udplite);
+			else
+				UDP6_INC_STATS_USER(sock_net(sk),
+						    UDP_MIB_INERRORS,
+						    is_udplite);
+		}
 		goto out_free;
 	}
 	if (!peeked) {
@@ -1458,7 +1469,8 @@ static void udp6_sock_seq_show(struct seq_file *seq, struct sock *sp, int bucket
 		   sk_wmem_alloc_get(sp),
 		   sk_rmem_alloc_get(sp),
 		   0, 0L, 0,
-		   sock_i_uid(sp), 0,
+		   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)),
+		   0,
 		   sock_i_ino(sp),
 		   atomic_read(&sp->sk_refcnt), sp,
 		   atomic_read(&sp->sk_drops));
diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
index ef39812107b..f8c4c08ffb6 100644
--- a/net/ipv6/xfrm6_policy.c
+++ b/net/ipv6/xfrm6_policy.c
@@ -73,6 +73,13 @@ static int xfrm6_get_tos(const struct flowi *fl)
 	return 0;
 }
 
+static void xfrm6_init_dst(struct net *net, struct xfrm_dst *xdst)
+{
+	struct rt6_info *rt = (struct rt6_info *)xdst;
+
+	rt6_init_peer(rt, net->ipv6.peers);
+}
+
 static int xfrm6_init_path(struct xfrm_dst *path, struct dst_entry *dst,
 			   int nfheader_len)
 {
@@ -286,6 +293,7 @@ static struct xfrm_policy_afinfo xfrm6_policy_afinfo = {
 	.get_saddr = 		xfrm6_get_saddr,
 	.decode_session =	_decode_session6,
 	.get_tos =		xfrm6_get_tos,
+	.init_dst =		xfrm6_init_dst,
 	.init_path =		xfrm6_init_path,
 	.fill_dst =		xfrm6_fill_dst,
 	.blackhole_route =	ip6_blackhole_route,