Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller: 1) Support ipv6 checksum offload in sunvnet driver, from Shannon Nelson. 2) Move to RB-tree instead of custom AVL code in inetpeer, from Eric Dumazet. 3) Allow generic XDP to work on virtual devices, from John Fastabend. 4) Add bpf device maps and XDP_REDIRECT, which can be used to build arbitrary switching frameworks using XDP. From John Fastabend. 5) Remove UFO offloads from the tree, gave us little other than bugs. 6) Remove the IPSEC flow cache, from Florian Westphal. 7) Support ipv6 route offload in mlxsw driver. 8) Support VF representors in bnxt_en, from Sathya Perla. 9) Add support for forward error correction modes to ethtool, from Vidya Sagar Ravipati. 10) Add time filter for packet scheduler action dumping, from Jamal Hadi Salim. 11) Extend the zerocopy sendmsg() used by virtio and tap to regular sockets via MSG_ZEROCOPY. From Willem de Bruijn. 12) Significantly rework value tracking in the BPF verifier, from Edward Cree. 13) Add new jump instructions to eBPF, from Daniel Borkmann. 14) Rework rtnetlink plumbing so that operations can be run without taking the RTNL semaphore. From Florian Westphal. 15) Support XDP in tap driver, from Jason Wang. 16) Add 32-bit eBPF JIT for ARM, from Shubham Bansal. 17) Add Huawei hinic ethernet driver. 18) Allow to report MD5 keys in TCP inet_diag dumps, from Ivan Delalande. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1780 commits) i40e: point wb_desc at the nvm_wb_desc during i40e_read_nvm_aq i40e: avoid NVM acquire deadlock during NVM update drivers: net: xgene: Remove return statement from void function drivers: net: xgene: Configure tx/rx delay for ACPI drivers: net: xgene: Read tx/rx delay for ACPI rocker: fix kcalloc parameter order rds: Fix non-atomic operation on shared flag variable net: sched: don't use GFP_KERNEL under spin lock vhost_net: correctly check tx avail during rx busy polling net: mdio-mux: add mdio_mux parameter to mdio_mux_init() rxrpc: Make service connection lookup always check for retry net: stmmac: Delete dead code for MDIO registration gianfar: Fix Tx flow control deactivation cxgb4: Ignore MPS_TX_INT_CAUSE[Bubble] for T6 cxgb4: Fix pause frame count in t4_get_port_stats cxgb4: fix memory leak tun: rename generic_xdp to skb_xdp tun: reserve extra headroom only when XDP is set net: dsa: bcm_sf2: Configure IMP port TC2QOS mapping net: dsa: bcm_sf2: Advertise number of egress queues ...
author: Linus Torvalds <torvalds@linux-foundation.org> 2017-09-06 14:45:08 -0700
committer: Linus Torvalds <torvalds@linux-foundation.org> 2017-09-06 14:45:08 -0700
commit: aae3dbb4776e7916b6cd442d00159bea27a695c1 (patch)
tree: d074c5d783a81e7e2e084b1eba77f57459da7e37 /net/ipv6
parent: ec3604c7a5aae8953545b0d05495357009a960e5 (diff)
parent: 66bed8465a808400eb14562510e26c8818082cb8 (diff)
42 files changed, 1621 insertions, 534 deletions
diff --git a/net/ipv6/Kconfig b/net/ipv6/Kconfig
index 48c452959d2c..ea71e4b0ab7a 100644
--- a/net/ipv6/Kconfig
+++ b/net/ipv6/Kconfig
@@ -308,22 +308,12 @@ config IPV6_SEG6_LWTUNNEL
 	depends on IPV6
 	select LWTUNNEL
 	select DST_CACHE
+	select IPV6_MULTIPLE_TABLES
 	---help---
 	  Support for encapsulation of packets within an outer IPv6
 	  header and a Segment Routing Header using the lightweight
-	  tunnels mechanism.
-
-	  If unsure, say N.
-
-config IPV6_SEG6_INLINE
-	bool "IPv6: direct Segment Routing Header insertion "
-	depends on IPV6_SEG6_LWTUNNEL
-	---help---
-	  Support for direct insertion of the Segment Routing Header,
-	  also known as inline mode. Be aware that direct insertion of
-	  extension headers (as opposed to encapsulation) may break
-	  multiple mechanisms such as PMTUD or IPSec AH. Use this feature
-	  only if you know exactly what you are doing.
+	  tunnels mechanism. Also enable support for advanced local
+	  processing of SRv6 packets based on their active segment.
 
 	  If unsure, say N.
 
diff --git a/net/ipv6/Makefile b/net/ipv6/Makefile
index 217e9ff0e24b..10e342363793 100644
--- a/net/ipv6/Makefile
+++ b/net/ipv6/Makefile
@@ -9,7 +9,7 @@ ipv6-objs :=	af_inet6.o anycast.o ip6_output.o ip6_input.o addrconf.o \
 		route.o ip6_fib.o ipv6_sockglue.o ndisc.o udp.o udplite.o \
 		raw.o icmp.o mcast.o reassembly.o tcp_ipv6.o ping.o \
 		exthdrs.o datagram.o ip6_flowlabel.o inet6_connection_sock.o \
-		udp_offload.o seg6.o
+		udp_offload.o seg6.o fib6_notifier.o
 
 ipv6-offload :=	ip6_offload.o tcpv6_offload.o exthdrs_offload.o
 
@@ -23,7 +23,7 @@ ipv6-$(CONFIG_IPV6_MULTIPLE_TABLES) += fib6_rules.o
 ipv6-$(CONFIG_PROC_FS) += proc.o
 ipv6-$(CONFIG_SYN_COOKIES) += syncookies.o
 ipv6-$(CONFIG_NETLABEL) += calipso.o
-ipv6-$(CONFIG_IPV6_SEG6_LWTUNNEL) += seg6_iptunnel.o
+ipv6-$(CONFIG_IPV6_SEG6_LWTUNNEL) += seg6_iptunnel.o seg6_local.o
 ipv6-$(CONFIG_IPV6_SEG6_HMAC) += seg6_hmac.o
 
 ipv6-objs += $(ipv6-y)
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 936e9ab4dda5..c2e2a78787ec 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -3030,9 +3030,6 @@ static void sit_add_v4_addrs(struct inet6_dev *idev)
 static void init_loopback(struct net_device *dev)
 {
 	struct inet6_dev  *idev;
-	struct net_device *sp_dev;
-	struct inet6_ifaddr *sp_ifa;
-	struct rt6_info *sp_rt;
 
 	/* ::1 */
 
@@ -3045,45 +3042,6 @@ static void init_loopback(struct net_device *dev)
 	}
 
 	add_addr(idev, &in6addr_loopback, 128, IFA_HOST);
-
-	/* Add routes to other interface's IPv6 addresses */
-	for_each_netdev(dev_net(dev), sp_dev) {
-		if (!strcmp(sp_dev->name, dev->name))
-			continue;
-
-		idev = __in6_dev_get(sp_dev);
-		if (!idev)
-			continue;
-
-		read_lock_bh(&idev->lock);
-		list_for_each_entry(sp_ifa, &idev->addr_list, if_list) {
-
-			if (sp_ifa->flags & (IFA_F_DADFAILED | IFA_F_TENTATIVE))
-				continue;
-
-			if (sp_ifa->rt) {
-				/* This dst has been added to garbage list when
-				 * lo device down, release this obsolete dst and
-				 * reallocate a new router for ifa.
-				 */
-				if (!atomic_read(&sp_ifa->rt->rt6i_ref)) {
-					ip6_rt_put(sp_ifa->rt);
-					sp_ifa->rt = NULL;
-				} else {
-					continue;
-				}
-			}
-
-			sp_rt = addrconf_dst_alloc(idev, &sp_ifa->addr, false);
-
-			/* Failure cases are ignored */
-			if (!IS_ERR(sp_rt)) {
-				sp_ifa->rt = sp_rt;
-				ip6_ins_rt(sp_rt);
-			}
-		}
-		read_unlock_bh(&idev->lock);
-	}
 }
 
 void addrconf_add_linklocal(struct inet6_dev *idev,
@@ -3321,11 +3279,11 @@ static void addrconf_gre_config(struct net_device *dev)
 static int fixup_permanent_addr(struct inet6_dev *idev,
 				struct inet6_ifaddr *ifp)
 {
-	/* rt6i_ref == 0 means the host route was removed from the
+	/* !rt6i_node means the host route was removed from the
 	 * FIB, for example, if 'lo' device is taken down. In that
 	 * case regenerate the host route.
 	 */
-	if (!ifp->rt || !atomic_read(&ifp->rt->rt6i_ref)) {
+	if (!ifp->rt || !ifp->rt->rt6i_node) {
 		struct rt6_info *rt, *prev;
 
 		rt = addrconf_dst_alloc(idev, &ifp->addr, false);
@@ -6605,21 +6563,21 @@ int __init addrconf_init(void)
 	rtnl_af_register(&inet6_ops);
 
 	err = __rtnl_register(PF_INET6, RTM_GETLINK, NULL, inet6_dump_ifinfo,
-			      NULL);
+			      0);
 	if (err < 0)
 		goto errout;
 
 	/* Only the first call to __rtnl_register can fail */
-	__rtnl_register(PF_INET6, RTM_NEWADDR, inet6_rtm_newaddr, NULL, NULL);
-	__rtnl_register(PF_INET6, RTM_DELADDR, inet6_rtm_deladdr, NULL, NULL);
+	__rtnl_register(PF_INET6, RTM_NEWADDR, inet6_rtm_newaddr, NULL, 0);
+	__rtnl_register(PF_INET6, RTM_DELADDR, inet6_rtm_deladdr, NULL, 0);
 	__rtnl_register(PF_INET6, RTM_GETADDR, inet6_rtm_getaddr,
-			inet6_dump_ifaddr, NULL);
+			inet6_dump_ifaddr, 0);
 	__rtnl_register(PF_INET6, RTM_GETMULTICAST, NULL,
-			inet6_dump_ifmcaddr, NULL);
+			inet6_dump_ifmcaddr, 0);
 	__rtnl_register(PF_INET6, RTM_GETANYCAST, NULL,
-			inet6_dump_ifacaddr, NULL);
+			inet6_dump_ifacaddr, 0);
 	__rtnl_register(PF_INET6, RTM_GETNETCONF, inet6_netconf_get_devconf,
-			inet6_netconf_dump_devconf, NULL);
+			inet6_netconf_dump_devconf, 0);
 
 	ipv6_addr_label_rtnl_register();
 
diff --git a/net/ipv6/addrlabel.c b/net/ipv6/addrlabel.c
index 7a428f65c7ec..b055bc79f56d 100644
--- a/net/ipv6/addrlabel.c
+++ b/net/ipv6/addrlabel.c
@@ -405,6 +405,18 @@ static const struct nla_policy ifal_policy[IFAL_MAX+1] = {
 	[IFAL_LABEL]		= { .len = sizeof(u32), },
 };
 
+static bool addrlbl_ifindex_exists(struct net *net, int ifindex)
+{
+
+	struct net_device *dev;
+
+	rcu_read_lock();
+	dev = dev_get_by_index_rcu(net, ifindex);
+	rcu_read_unlock();
+
+	return dev != NULL;
+}
+
 static int ip6addrlbl_newdel(struct sk_buff *skb, struct nlmsghdr *nlh,
 			     struct netlink_ext_ack *extack)
 {
@@ -439,7 +451,7 @@ static int ip6addrlbl_newdel(struct sk_buff *skb, struct nlmsghdr *nlh,
 	switch (nlh->nlmsg_type) {
 	case RTM_NEWADDRLABEL:
 		if (ifal->ifal_index &&
-		    !__dev_get_by_index(net, ifal->ifal_index))
+		    !addrlbl_ifindex_exists(net, ifal->ifal_index))
 			return -EINVAL;
 
 		err = ip6addrlbl_add(net, pfx, ifal->ifal_prefixlen,
@@ -548,7 +560,7 @@ static int ip6addrlbl_get(struct sk_buff *in_skb, struct nlmsghdr *nlh,
 		return -EINVAL;
 
 	if (ifal->ifal_index &&
-	    !__dev_get_by_index(net, ifal->ifal_index))
+	    !addrlbl_ifindex_exists(net, ifal->ifal_index))
 		return -EINVAL;
 
 	if (!tb[IFAL_ADDRESS])
@@ -593,10 +605,10 @@ out:
 void __init ipv6_addr_label_rtnl_register(void)
 {
 	__rtnl_register(PF_INET6, RTM_NEWADDRLABEL, ip6addrlbl_newdel,
-			NULL, NULL);
+			NULL, RTNL_FLAG_DOIT_UNLOCKED);
 	__rtnl_register(PF_INET6, RTM_DELADDRLABEL, ip6addrlbl_newdel,
-			NULL, NULL);
+			NULL, RTNL_FLAG_DOIT_UNLOCKED);
 	__rtnl_register(PF_INET6, RTM_GETADDRLABEL, ip6addrlbl_get,
-			ip6addrlbl_dump, NULL);
+			ip6addrlbl_dump, RTNL_FLAG_DOIT_UNLOCKED);
 }
 
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index a88b5b5b7955..fe5262fd6aa5 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -210,7 +210,8 @@ lookup_protocol:
 	np->mcast_hops	= IPV6_DEFAULT_MCASTHOPS;
 	np->mc_loop	= 1;
 	np->pmtudisc	= IPV6_PMTUDISC_WANT;
-	np->autoflowlabel = ip6_default_np_autolabel(sock_net(sk));
+	np->autoflowlabel = ip6_default_np_autolabel(net);
+	np->repflow	= net->ipv6.sysctl.flowlabel_reflect;
 	sk->sk_ipv6only	= net->ipv6.sysctl.bindv6only;
 
 	/* Init the ipv4 part of the socket since we can have sockets
@@ -554,6 +555,8 @@ const struct proto_ops inet6_stream_ops = {
 	.recvmsg	   = inet_recvmsg,		/* ok		*/
 	.mmap		   = sock_no_mmap,
 	.sendpage	   = inet_sendpage,
+	.sendmsg_locked    = tcp_sendmsg_locked,
+	.sendpage_locked   = tcp_sendpage_locked,
 	.splice_read	   = tcp_splice_read,
 	.read_sock	   = tcp_read_sock,
 	.peek_len	   = tcp_peek_len,
diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index ab64f367d11c..89910e2c10f4 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -463,28 +463,30 @@ static int esp6_output(struct xfrm_state *x, struct sk_buff *skb)
 	return esp6_output_tail(x, skb, &esp);
 }
 
-int esp6_input_done2(struct sk_buff *skb, int err)
+static inline int esp_remove_trailer(struct sk_buff *skb)
 {
 	struct xfrm_state *x = xfrm_input_state(skb);
 	struct xfrm_offload *xo = xfrm_offload(skb);
 	struct crypto_aead *aead = x->data;
-	int alen = crypto_aead_authsize(aead);
-	int hlen = sizeof(struct ip_esp_hdr) + crypto_aead_ivsize(aead);
-	int elen = skb->len - hlen;
-	int hdr_len = skb_network_header_len(skb);
-	int padlen;
+	int alen, hlen, elen;
+	int padlen, trimlen;
+	__wsum csumdiff;
 	u8 nexthdr[2];
+	int ret;
 
-	if (!xo || (xo && !(xo->flags & CRYPTO_DONE)))
-		kfree(ESP_SKB_CB(skb)->tmp);
+	alen = crypto_aead_authsize(aead);
+	hlen = sizeof(struct ip_esp_hdr) + crypto_aead_ivsize(aead);
+	elen = skb->len - hlen;
 
-	if (unlikely(err))
+	if (xo && (xo->flags & XFRM_ESP_NO_TRAILER)) {
+		ret = xo->proto;
 		goto out;
+	}
 
 	if (skb_copy_bits(skb, skb->len - alen - 2, nexthdr, 2))
 		BUG();
 
-	err = -EINVAL;
+	ret = -EINVAL;
 	padlen = nexthdr[0];
 	if (padlen + 2 + alen >= elen) {
 		net_dbg_ratelimited("ipsec esp packet is garbage padlen=%d, elen=%d\n",
@@ -492,17 +494,46 @@ int esp6_input_done2(struct sk_buff *skb, int err)
 		goto out;
 	}
 
-	/* ... check padding bits here. Silly. :-) */
+	trimlen = alen + padlen + 2;
+	if (skb->ip_summed == CHECKSUM_COMPLETE) {
+		csumdiff = skb_checksum(skb, skb->len - trimlen, trimlen, 0);
+		skb->csum = csum_block_sub(skb->csum, csumdiff,
+					   skb->len - trimlen);
+	}
+	pskb_trim(skb, skb->len - trimlen);
+
+	ret = nexthdr[1];
+
+out:
+	return ret;
+}
 
-	pskb_trim(skb, skb->len - alen - padlen - 2);
-	__skb_pull(skb, hlen);
+int esp6_input_done2(struct sk_buff *skb, int err)
+{
+	struct xfrm_state *x = xfrm_input_state(skb);
+	struct xfrm_offload *xo = xfrm_offload(skb);
+	struct crypto_aead *aead = x->data;
+	int hlen = sizeof(struct ip_esp_hdr) + crypto_aead_ivsize(aead);
+	int hdr_len = skb_network_header_len(skb);
+
+	if (!xo || (xo && !(xo->flags & CRYPTO_DONE)))
+		kfree(ESP_SKB_CB(skb)->tmp);
+
+	if (unlikely(err))
+		goto out;
+
+	err = esp_remove_trailer(skb);
+	if (unlikely(err < 0))
+		goto out;
+
+	skb_postpull_rcsum(skb, skb_network_header(skb),
+			   skb_network_header_len(skb));
+	skb_pull_rcsum(skb, hlen);
 	if (x->props.mode == XFRM_MODE_TUNNEL)
 		skb_reset_transport_header(skb);
 	else
 		skb_set_transport_header(skb, -hdr_len);
 
-	err = nexthdr[1];
-
 	/* RFC4303: Drop dummy packets without any error */
 	if (err == IPPROTO_NONE)
 		err = -EINVAL;
diff --git a/net/ipv6/esp6_offload.c b/net/ipv6/esp6_offload.c
index 1cf437f75b0b..333a478aa161 100644
--- a/net/ipv6/esp6_offload.c
+++ b/net/ipv6/esp6_offload.c
@@ -209,11 +209,13 @@ out:
 static int esp6_input_tail(struct xfrm_state *x, struct sk_buff *skb)
 {
 	struct crypto_aead *aead = x->data;
+	struct xfrm_offload *xo = xfrm_offload(skb);
 
 	if (!pskb_may_pull(skb, sizeof(struct ip_esp_hdr) + crypto_aead_ivsize(aead)))
 		return -EINVAL;
 
-	skb->ip_summed = CHECKSUM_NONE;
+	if (!(xo->flags & CRYPTO_DONE))
+		skb->ip_summed = CHECKSUM_NONE;
 
 	return esp6_input_done2(skb, 0);
 }
@@ -332,3 +334,4 @@ module_init(esp6_offload_init);
 module_exit(esp6_offload_exit);
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Steffen Klassert <steffen.klassert@secunet.com>");
+MODULE_ALIAS_XFRM_OFFLOAD_TYPE(AF_INET6, XFRM_PROTO_ESP);
diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 3cec529c6113..95516138e861 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -882,7 +882,7 @@ static void ipv6_push_rthdr4(struct sk_buff *skb, u8 *proto,
 	       (hops - 1) * sizeof(struct in6_addr));
 
 	sr_phdr->segments[0] = **addr_p;
-	*addr_p = &sr_ihdr->segments[hops - 1];
+	*addr_p = &sr_ihdr->segments[sr_ihdr->segments_left];
 
 #ifdef CONFIG_IPV6_SEG6_HMAC
 	if (sr_has_hmac(sr_phdr)) {
@@ -1174,7 +1174,7 @@ struct in6_addr *fl6_update_dst(struct flowi6 *fl6,
 	{
 		struct ipv6_sr_hdr *srh = (struct ipv6_sr_hdr *)opt->srcrt;
 
-		fl6->daddr = srh->segments[srh->first_segment];
+		fl6->daddr = srh->segments[srh->segments_left];
 		break;
 	}
 	default:
diff --git a/net/ipv6/fib6_notifier.c b/net/ipv6/fib6_notifier.c
new file mode 100644
index 000000000000..05f82baaa99e
--- /dev/null
+++ b/net/ipv6/fib6_notifier.c
@@ -0,0 +1,63 @@
+#include <linux/notifier.h>
+#include <linux/socket.h>
+#include <linux/kernel.h>
+#include <linux/export.h>
+#include <net/net_namespace.h>
+#include <net/fib_notifier.h>
+#include <net/netns/ipv6.h>
+#include <net/ip6_fib.h>
+
+int call_fib6_notifier(struct notifier_block *nb, struct net *net,
+		       enum fib_event_type event_type,
+		       struct fib_notifier_info *info)
+{
+	info->family = AF_INET6;
+	return call_fib_notifier(nb, net, event_type, info);
+}
+
+int call_fib6_notifiers(struct net *net, enum fib_event_type event_type,
+			struct fib_notifier_info *info)
+{
+	info->family = AF_INET6;
+	return call_fib_notifiers(net, event_type, info);
+}
+
+static unsigned int fib6_seq_read(struct net *net)
+{
+	return fib6_tables_seq_read(net) + fib6_rules_seq_read(net);
+}
+
+static int fib6_dump(struct net *net, struct notifier_block *nb)
+{
+	int err;
+
+	err = fib6_rules_dump(net, nb);
+	if (err)
+		return err;
+
+	return fib6_tables_dump(net, nb);
+}
+
+static const struct fib_notifier_ops fib6_notifier_ops_template = {
+	.family		= AF_INET6,
+	.fib_seq_read	= fib6_seq_read,
+	.fib_dump	= fib6_dump,
+	.owner		= THIS_MODULE,
+};
+
+int __net_init fib6_notifier_init(struct net *net)
+{
+	struct fib_notifier_ops *ops;
+
+	ops = fib_notifier_ops_register(&fib6_notifier_ops_template, net);
+	if (IS_ERR(ops))
+		return PTR_ERR(ops);
+	net->ipv6.notifier_ops = ops;
+
+	return 0;
+}
+
+void __net_exit fib6_notifier_exit(struct net *net)
+{
+	fib_notifier_ops_unregister(net->ipv6.notifier_ops);
+}
diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
index ec849d88a662..b240f24a6e52 100644
--- a/net/ipv6/fib6_rules.c
+++ b/net/ipv6/fib6_rules.c
@@ -14,6 +14,7 @@
  */
 
 #include <linux/netdevice.h>
+#include <linux/notifier.h>
 #include <linux/export.h>
 
 #include <net/fib_rules.h>
@@ -29,22 +30,65 @@ struct fib6_rule {
 	u8			tclass;
 };
 
-struct dst_entry *fib6_rule_lookup(struct net *net, struct flowi6 *fl6,
-				   int flags, pol_lookup_t lookup)
+static bool fib6_rule_matchall(const struct fib_rule *rule)
+{
+	struct fib6_rule *r = container_of(rule, struct fib6_rule, common);
+
+	if (r->dst.plen || r->src.plen || r->tclass)
+		return false;
+	return fib_rule_matchall(rule);
+}
+
+bool fib6_rule_default(const struct fib_rule *rule)
 {
-	struct fib_lookup_arg arg = {
-		.lookup_ptr = lookup,
-		.flags = FIB_LOOKUP_NOREF,
-	};
+	if (!fib6_rule_matchall(rule) || rule->action != FR_ACT_TO_TBL ||
+	    rule->l3mdev)
+		return false;
+	if (rule->table != RT6_TABLE_LOCAL && rule->table != RT6_TABLE_MAIN)
+		return false;
+	return true;
+}
+EXPORT_SYMBOL_GPL(fib6_rule_default);
 
-	/* update flow if oif or iif point to device enslaved to l3mdev */
-	l3mdev_update_flow(net, flowi6_to_flowi(fl6));
+int fib6_rules_dump(struct net *net, struct notifier_block *nb)
+{
+	return fib_rules_dump(net, nb, AF_INET6);
+}
 
-	fib_rules_lookup(net->ipv6.fib6_rules_ops,
-			 flowi6_to_flowi(fl6), flags, &arg);
+unsigned int fib6_rules_seq_read(struct net *net)
+{
+	return fib_rules_seq_read(net, AF_INET6);
+}
 
-	if (arg.result)
-		return arg.result;
+struct dst_entry *fib6_rule_lookup(struct net *net, struct flowi6 *fl6,
+				   int flags, pol_lookup_t lookup)
+{
+	if (net->ipv6.fib6_has_custom_rules) {
+		struct fib_lookup_arg arg = {
+			.lookup_ptr = lookup,
+			.flags = FIB_LOOKUP_NOREF,
+		};
+
+		/* update flow if oif or iif point to device enslaved to l3mdev */
+		l3mdev_update_flow(net, flowi6_to_flowi(fl6));
+
+		fib_rules_lookup(net->ipv6.fib6_rules_ops,
+				 flowi6_to_flowi(fl6), flags, &arg);
+
+		if (arg.result)
+			return arg.result;
+	} else {
+		struct rt6_info *rt;
+
+		rt = lookup(net, net->ipv6.fib6_local_tbl, fl6, flags);
+		if (rt != net->ipv6.ip6_null_entry && rt->dst.error != -EAGAIN)
+			return &rt->dst;
+		ip6_rt_put(rt);
+		rt = lookup(net, net->ipv6.fib6_main_tbl, fl6, flags);
+		if (rt->dst.error != -EAGAIN)
+			return &rt->dst;
+		ip6_rt_put(rt);
+	}
 
 	dst_hold(&net->ipv6.ip6_null_entry->dst);
 	return &net->ipv6.ip6_null_entry->dst;
@@ -214,6 +258,7 @@ static int fib6_rule_configure(struct fib_rule *rule, struct sk_buff *skb,
 	rule6->dst.plen = frh->dst_len;
 	rule6->tclass = frh->tos;
 
+	net->ipv6.fib6_has_custom_rules = true;
 	err = 0;
 errout:
 	return err;
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index 8d7b113958b1..5acb54405b10 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -399,6 +399,24 @@ relookup_failed:
 	return ERR_PTR(err);
 }
 
+static int icmp6_iif(const struct sk_buff *skb)
+{
+	int iif = skb->dev->ifindex;
+
+	/* for local traffic to local address, skb dev is the loopback
+	 * device. Check if there is a dst attached to the skb and if so
+	 * get the real device index.
+	 */
+	if (unlikely(iif == LOOPBACK_IFINDEX)) {
+		const struct rt6_info *rt6 = skb_rt6_info(skb);
+
+		if (rt6)
+			iif = rt6->rt6i_idev->dev->ifindex;
+	}
+
+	return iif;
+}
+
 /*
  *	Send an ICMP message in response to a packet in error
  */
@@ -459,9 +477,9 @@ static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
 	 *	Source addr check
 	 */
 
-	if (__ipv6_addr_needs_scope_id(addr_type))
-		iif = skb->dev->ifindex;
-	else {
+	if (__ipv6_addr_needs_scope_id(addr_type)) {
+		iif = icmp6_iif(skb);
+	} else {
 		dst = skb_dst(skb);
 		iif = l3mdev_master_ifindex(dst ? dst->dev : skb->dev);
 	}
@@ -508,6 +526,7 @@ static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
 	fl6.fl6_icmp_type = type;
 	fl6.fl6_icmp_code = code;
 	fl6.flowi6_uid = sock_net_uid(net, NULL);
+	fl6.mp_hash = rt6_multipath_hash(&fl6, skb);
 	security_skb_classify_flow(skb, flowi6_to_flowi(&fl6));
 
 	sk = icmpv6_xmit_lock(net);
@@ -682,7 +701,7 @@ static void icmpv6_echo_reply(struct sk_buff *skb)
 	fl6.daddr = ipv6_hdr(skb)->saddr;
 	if (saddr)
 		fl6.saddr = *saddr;
-	fl6.flowi6_oif = skb->dev->ifindex;
+	fl6.flowi6_oif = icmp6_iif(skb);
 	fl6.fl6_icmp_type = ICMPV6_ECHO_REPLY;
 	fl6.flowi6_mark = mark;
 	fl6.flowi6_uid = sock_net_uid(net, NULL);
diff --git a/net/ipv6/ila/ila_xlat.c b/net/ipv6/ila/ila_xlat.c
index 77f7f8c7d93d..5bd419c1abc8 100644
--- a/net/ipv6/ila/ila_xlat.c
+++ b/net/ipv6/ila/ila_xlat.c
@@ -208,7 +208,7 @@ ila_nf_input(void *priv,
 	return NF_ACCEPT;
 }
 
-static struct nf_hook_ops ila_nf_hook_ops[] __read_mostly = {
+static const struct nf_hook_ops ila_nf_hook_ops[] = {
 	{
 		.hook = ila_nf_input,
 		.pf = NFPROTO_IPV6,
diff --git a/net/ipv6/inet6_hashtables.c b/net/ipv6/inet6_hashtables.c
index b13b8f93079d..b01858f5deb1 100644
--- a/net/ipv6/inet6_hashtables.c
+++ b/net/ipv6/inet6_hashtables.c
@@ -56,7 +56,7 @@ struct sock *__inet6_lookup_established(struct net *net,
 					   const __be16 sport,
 					   const struct in6_addr *daddr,
 					   const u16 hnum,
-					   const int dif)
+					   const int dif, const int sdif)
 {
 	struct sock *sk;
 	const struct hlist_nulls_node *node;
@@ -73,12 +73,12 @@ begin:
 	sk_nulls_for_each_rcu(sk, node, &head->chain) {
 		if (sk->sk_hash != hash)
 			continue;
-		if (!INET6_MATCH(sk, net, saddr, daddr, ports, dif))
+		if (!INET6_MATCH(sk, net, saddr, daddr, ports, dif, sdif))
 			continue;
 		if (unlikely(!refcount_inc_not_zero(&sk->sk_refcnt)))
 			goto out;
 
-		if (unlikely(!INET6_MATCH(sk, net, saddr, daddr, ports, dif))) {
+		if (unlikely(!INET6_MATCH(sk, net, saddr, daddr, ports, dif, sdif))) {
 			sock_gen_put(sk);
 			goto begin;
 		}
@@ -96,7 +96,7 @@ EXPORT_SYMBOL(__inet6_lookup_established);
 static inline int compute_score(struct sock *sk, struct net *net,
 				const unsigned short hnum,
 				const struct in6_addr *daddr,
-				const int dif, bool exact_dif)
+				const int dif, const int sdif, bool exact_dif)
 {
 	int score = -1;
 
@@ -110,9 +110,13 @@ static inline int compute_score(struct sock *sk, struct net *net,
 			score++;
 		}
 		if (sk->sk_bound_dev_if || exact_dif) {
-			if (sk->sk_bound_dev_if != dif)
+			bool dev_match = (sk->sk_bound_dev_if == dif ||
+					  sk->sk_bound_dev_if == sdif);
+
+			if (exact_dif && !dev_match)
 				return -1;
-			score++;
+			if (sk->sk_bound_dev_if && dev_match)
+				score++;
 		}
 		if (sk->sk_incoming_cpu == raw_smp_processor_id())
 			score++;
@@ -126,7 +130,7 @@ struct sock *inet6_lookup_listener(struct net *net,
 		struct sk_buff *skb, int doff,
 		const struct in6_addr *saddr,
 		const __be16 sport, const struct in6_addr *daddr,
-		const unsigned short hnum, const int dif)
+		const unsigned short hnum, const int dif, const int sdif)
 {
 	unsigned int hash = inet_lhashfn(net, hnum);
 	struct inet_listen_hashbucket *ilb = &hashinfo->listening_hash[hash];
@@ -136,7 +140,7 @@ struct sock *inet6_lookup_listener(struct net *net,
 	u32 phash = 0;
 
 	sk_for_each(sk, &ilb->head) {
-		score = compute_score(sk, net, hnum, daddr, dif, exact_dif);
+		score = compute_score(sk, net, hnum, daddr, dif, sdif, exact_dif);
 		if (score > hiscore) {
 			reuseport = sk->sk_reuseport;
 			if (reuseport) {
@@ -171,7 +175,7 @@ struct sock *inet6_lookup(struct net *net, struct inet_hashinfo *hashinfo,
 	bool refcounted;
 
 	sk = __inet6_lookup(net, hashinfo, skb, doff, saddr, sport, daddr,
-			    ntohs(dport), dif, &refcounted);
+			    ntohs(dport), dif, 0, &refcounted);
 	if (sk && !refcounted && !refcount_inc_not_zero(&sk->sk_refcnt))
 		sk = NULL;
 	return sk;
@@ -187,8 +191,9 @@ static int __inet6_check_established(struct inet_timewait_death_row *death_row,
 	const struct in6_addr *daddr = &sk->sk_v6_rcv_saddr;
 	const struct in6_addr *saddr = &sk->sk_v6_daddr;
 	const int dif = sk->sk_bound_dev_if;
-	const __portpair ports = INET_COMBINED_PORTS(inet->inet_dport, lport);
 	struct net *net = sock_net(sk);
+	const int sdif = l3mdev_master_ifindex_by_index(net, dif);
+	const __portpair ports = INET_COMBINED_PORTS(inet->inet_dport, lport);
 	const unsigned int hash = inet6_ehashfn(net, daddr, lport, saddr,
 						inet->inet_dport);
 	struct inet_ehash_bucket *head = inet_ehash_bucket(hinfo, hash);
@@ -203,7 +208,8 @@ static int __inet6_check_established(struct inet_timewait_death_row *death_row,
 		if (sk2->sk_hash != hash)
 			continue;
 
-		if (likely(INET6_MATCH(sk2, net, saddr, daddr, ports, dif))) {
+		if (likely(INET6_MATCH(sk2, net, saddr, daddr, ports,
+				       dif, sdif))) {
 			if (sk2->sk_state == TCP_TIME_WAIT) {
 				tw = inet_twsk(sk2);
 				if (twsk_unique(sk, sk2, twp))
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index e1c85bb4eac0..a3b5c163325f 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -33,6 +33,7 @@
 #include <net/ndisc.h>
 #include <net/addrconf.h>
 #include <net/lwtunnel.h>
+#include <net/fib_notifier.h>
 
 #include <net/ip6_fib.h>
 #include <net/ip6_route.h>
@@ -165,7 +166,7 @@ static void node_free(struct fib6_node *fn)
 	call_rcu(&fn->rcu, node_free_rcu);
 }
 
-static void rt6_free_pcpu(struct rt6_info *non_pcpu_rt)
+void rt6_free_pcpu(struct rt6_info *non_pcpu_rt)
 {
 	int cpu;
 
@@ -188,15 +189,7 @@ static void rt6_free_pcpu(struct rt6_info *non_pcpu_rt)
 	free_percpu(non_pcpu_rt->rt6i_pcpu);
 	non_pcpu_rt->rt6i_pcpu = NULL;
 }
-
-static void rt6_release(struct rt6_info *rt)
-{
-	if (atomic_dec_and_test(&rt->rt6i_ref)) {
-		rt6_free_pcpu(rt);
-		dst_dev_put(&rt->dst);
-		dst_release(&rt->dst);
-	}
-}
+EXPORT_SYMBOL_GPL(rt6_free_pcpu);
 
 static void fib6_link_table(struct net *net, struct fib6_table *tb)
 {
@@ -314,6 +307,109 @@ static void __net_init fib6_tables_init(struct net *net)
 
 #endif
 
+unsigned int fib6_tables_seq_read(struct net *net)
+{
+	unsigned int h, fib_seq = 0;
+
+	rcu_read_lock();
+	for (h = 0; h < FIB6_TABLE_HASHSZ; h++) {
+		struct hlist_head *head = &net->ipv6.fib_table_hash[h];
+		struct fib6_table *tb;
+
+		hlist_for_each_entry_rcu(tb, head, tb6_hlist) {
+			read_lock_bh(&tb->tb6_lock);
+			fib_seq += tb->fib_seq;
+			read_unlock_bh(&tb->tb6_lock);
+		}
+	}
+	rcu_read_unlock();
+
+	return fib_seq;
+}
+
+static int call_fib6_entry_notifier(struct notifier_block *nb, struct net *net,
+				    enum fib_event_type event_type,
+				    struct rt6_info *rt)
+{
+	struct fib6_entry_notifier_info info = {
+		.rt = rt,
+	};
+
+	return call_fib6_notifier(nb, net, event_type, &info.info);
+}
+
+static int call_fib6_entry_notifiers(struct net *net,
+				     enum fib_event_type event_type,
+				     struct rt6_info *rt)
+{
+	struct fib6_entry_notifier_info info = {
+		.rt = rt,
+	};
+
+	rt->rt6i_table->fib_seq++;
+	return call_fib6_notifiers(net, event_type, &info.info);
+}
+
+struct fib6_dump_arg {
+	struct net *net;
+	struct notifier_block *nb;
+};
+
+static void fib6_rt_dump(struct rt6_info *rt, struct fib6_dump_arg *arg)
+{
+	if (rt == arg->net->ipv6.ip6_null_entry)
+		return;
+	call_fib6_entry_notifier(arg->nb, arg->net, FIB_EVENT_ENTRY_ADD, rt);
+}
+
+static int fib6_node_dump(struct fib6_walker *w)
+{
+	struct rt6_info *rt;
+
+	for (rt = w->leaf; rt; rt = rt->dst.rt6_next)
+		fib6_rt_dump(rt, w->args);
+	w->leaf = NULL;
+	return 0;
+}
+
+static void fib6_table_dump(struct net *net, struct fib6_table *tb,
+			    struct fib6_walker *w)
+{
+	w->root = &tb->tb6_root;
+	read_lock_bh(&tb->tb6_lock);
+	fib6_walk(net, w);
+	read_unlock_bh(&tb->tb6_lock);
+}
+
+/* Called with rcu_read_lock() */
+int fib6_tables_dump(struct net *net, struct notifier_block *nb)
+{
+	struct fib6_dump_arg arg;
+	struct fib6_walker *w;
+	unsigned int h;
+
+	w = kzalloc(sizeof(*w), GFP_ATOMIC);
+	if (!w)
+		return -ENOMEM;
+
+	w->func = fib6_node_dump;
+	arg.net = net;
+	arg.nb = nb;
+	w->args = &arg;
+
+	for (h = 0; h < FIB6_TABLE_HASHSZ; h++) {
+		struct hlist_head *head = &net->ipv6.fib_table_hash[h];
+		struct fib6_table *tb;
+
+		hlist_for_each_entry_rcu(tb, head, tb6_hlist)
+			fib6_table_dump(net, tb, w);
+	}
+
+	kfree(w);
+
+	return 0;
+}
+
 static int fib6_dump_node(struct fib6_walker *w)
 {
 	int res;
@@ -745,8 +841,6 @@ static void fib6_purge_rt(struct rt6_info *rt, struct fib6_node *fn,
 			}
 			fn = fn->parent;
 		}
-		/* No more references are possible at this point. */
-		BUG_ON(atomic_read(&rt->rt6i_ref) != 1);
 	}
 }
 
@@ -891,6 +985,8 @@ add:
 		*ins = rt;
 		rcu_assign_pointer(rt->rt6i_node, fn);
 		atomic_inc(&rt->rt6i_ref);
+		call_fib6_entry_notifiers(info->nl_net, FIB_EVENT_ENTRY_ADD,
+					  rt);
 		if (!info->skip_notify)
 			inet6_rt_notify(RTM_NEWROUTE, rt, info, nlflags);
 		info->nl_net->ipv6.rt6_stats->fib_rt_entries++;
@@ -918,6 +1014,8 @@ add:
 		rcu_assign_pointer(rt->rt6i_node, fn);
 		rt->dst.rt6_next = iter->dst.rt6_next;
 		atomic_inc(&rt->rt6i_ref);
+		call_fib6_entry_notifiers(info->nl_net, FIB_EVENT_ENTRY_REPLACE,
+					  rt);
 		if (!info->skip_notify)
 			inet6_rt_notify(RTM_NEWROUTE, rt, info, NLM_F_REPLACE);
 		if (!(fn->fn_flags & RTN_RTINFO)) {
@@ -925,6 +1023,7 @@ add:
 			fn->fn_flags |= RTN_RTINFO;
 		}
 		nsiblings = iter->rt6i_nsiblings;
+		iter->rt6i_node = NULL;
 		fib6_purge_rt(iter, fn, info->nl_net);
 		if (fn->rr_ptr == iter)
 			fn->rr_ptr = NULL;
@@ -939,6 +1038,7 @@ add:
 					break;
 				if (rt6_qualify_for_ecmp(iter)) {
 					*ins = iter->dst.rt6_next;
+					iter->rt6i_node = NULL;
 					fib6_purge_rt(iter, fn, info->nl_net);
 					if (fn->rr_ptr == iter)
 						fn->rr_ptr = NULL;
@@ -1473,6 +1573,7 @@ static void fib6_del_route(struct fib6_node *fn, struct rt6_info **rtp,
 
 	fib6_purge_rt(rt, fn, net);
 
+	call_fib6_entry_notifiers(net, FIB_EVENT_ENTRY_DEL, rt);
 	if (!info->skip_notify)
 		inet6_rt_notify(RTM_DELROUTE, rt, info, 0);
 	rt6_release(rt);
@@ -1858,6 +1959,11 @@ static void fib6_gc_timer_cb(unsigned long arg)
 static int __net_init fib6_net_init(struct net *net)
 {
 	size_t size = sizeof(struct hlist_head) * FIB6_TABLE_HASHSZ;
+	int err;
+
+	err = fib6_notifier_init(net);
+	if (err)
+		return err;
 
 	spin_lock_init(&net->ipv6.fib6_gc_lock);
 	rwlock_init(&net->ipv6.fib6_walker_lock);
@@ -1910,6 +2016,7 @@ out_fib_table_hash:
 out_rt6_stats:
 	kfree(net->ipv6.rt6_stats);
 out_timer:
+	fib6_notifier_exit(net);
 	return -ENOMEM;
 }
 
@@ -1926,6 +2033,7 @@ static void fib6_net_exit(struct net *net)
 	kfree(net->ipv6.fib6_main_tbl);
 	kfree(net->ipv6.fib_table_hash);
 	kfree(net->ipv6.rt6_stats);
+	fib6_notifier_exit(net);
 }
 
 static struct pernet_operations fib6_net_ops = {
@@ -1949,7 +2057,7 @@ int __init fib6_init(void)
 		goto out_kmem_cache_create;
 
 	ret = __rtnl_register(PF_INET6, RTM_GETROUTE, NULL, inet6_dump_fib,
-			      NULL);
+			      0);
 	if (ret)
 		goto out_unregister_subsys;
 
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 2dfe50d8d609..43ca864327c7 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -1110,69 +1110,6 @@ struct dst_entry *ip6_sk_dst_lookup_flow(struct sock *sk, struct flowi6 *fl6,
 }
 EXPORT_SYMBOL_GPL(ip6_sk_dst_lookup_flow);
 
-static inline int ip6_ufo_append_data(struct sock *sk,
-			struct sk_buff_head *queue,
-			int getfrag(void *from, char *to, int offset, int len,
-			int odd, struct sk_buff *skb),
-			void *from, int length, int hh_len, int fragheaderlen,
-			int exthdrlen, int transhdrlen, int mtu,
-			unsigned int flags, const struct flowi6 *fl6)
-
-{
-	struct sk_buff *skb;
-	int err;
-
-	/* There is support for UDP large send offload by network
-	 * device, so create one single skb packet containing complete
-	 * udp datagram
-	 */
-	skb = skb_peek_tail(queue);
-	if (!skb) {
-		skb = sock_alloc_send_skb(sk,
-			hh_len + fragheaderlen + transhdrlen + 20,
-			(flags & MSG_DONTWAIT), &err);
-		if (!skb)
-			return err;
-
-		/* reserve space for Hardware header */
-		skb_reserve(skb, hh_len);
-
-		/* create space for UDP/IP header */
-		skb_put(skb, fragheaderlen + transhdrlen);
-
-		/* initialize network header pointer */
-		skb_set_network_header(skb, exthdrlen);
-
-		/* initialize protocol header pointer */
-		skb->transport_header = skb->network_header + fragheaderlen;
-
-		skb->protocol = htons(ETH_P_IPV6);
-		skb->csum = 0;
-
-		if (flags & MSG_CONFIRM)
-			skb_set_dst_pending_confirm(skb, 1);
-
-		__skb_queue_tail(queue, skb);
-	} else if (skb_is_gso(skb)) {
-		goto append;
-	}
-
-	skb->ip_summed = CHECKSUM_PARTIAL;
-	/* Specify the length of each IPv6 datagram fragment.
-	 * It has to be a multiple of 8.
-	 */
-	skb_shinfo(skb)->gso_size = (mtu - fragheaderlen -
-				     sizeof(struct frag_hdr)) & ~7;
-	skb_shinfo(skb)->gso_type = SKB_GSO_UDP;
-	skb_shinfo(skb)->ip6_frag_id = ipv6_select_ident(sock_net(sk),
-							 &fl6->daddr,
-							 &fl6->saddr);
-
-append:
-	return skb_append_datato_frags(sk, skb, getfrag, from,
-				       (length - transhdrlen));
-}
-
 static inline struct ipv6_opt_hdr *ip6_opt_dup(struct ipv6_opt_hdr *src,
 					       gfp_t gfp)
 {
@@ -1381,20 +1318,6 @@ emsgsize:
 	 */
 
 	cork->length += length;
-	if ((skb && skb_is_gso(skb)) ||
-	    (((length + (skb ? skb->len : headersize)) > mtu) &&
-	    (skb_queue_len(queue) <= 1) &&
-	    (sk->sk_protocol == IPPROTO_UDP) &&
-	    (rt->dst.dev->features & NETIF_F_UFO) && !dst_xfrm(&rt->dst) &&
-	    (sk->sk_type == SOCK_DGRAM) && !udp_get_no_check6_tx(sk))) {
-		err = ip6_ufo_append_data(sk, queue, getfrag, from, length,
-					  hh_len, fragheaderlen, exthdrlen,
-					  transhdrlen, mtu, flags, fl6);
-		if (err)
-			goto error;
-		return 0;
-	}
-
 	if (!skb)
 		goto alloc_new_skb;
 
diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
index 486c2305f53c..79444a4bfd6d 100644
--- a/net/ipv6/ip6_vti.c
+++ b/net/ipv6/ip6_vti.c
@@ -1145,33 +1145,6 @@ static struct xfrm6_protocol vti_ipcomp6_protocol __read_mostly = {
 	.priority	=	100,
 };
 
-static bool is_vti6_tunnel(const struct net_device *dev)
-{
-	return dev->netdev_ops == &vti6_netdev_ops;
-}
-
-static int vti6_device_event(struct notifier_block *unused,
-			     unsigned long event, void *ptr)
-{
-	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
-	struct ip6_tnl *t = netdev_priv(dev);
-
-	if (!is_vti6_tunnel(dev))
-		return NOTIFY_DONE;
-
-	switch (event) {
-	case NETDEV_DOWN:
-		if (!net_eq(t->net, dev_net(dev)))
-			xfrm_garbage_collect(t->net);
-		break;
-	}
-	return NOTIFY_DONE;
-}
-
-static struct notifier_block vti6_notifier_block __read_mostly = {
-	.notifier_call = vti6_device_event,
-};
-
 /**
  * vti6_tunnel_init - register protocol and reserve needed resources
  *
@@ -1182,8 +1155,6 @@ static int __init vti6_tunnel_init(void)
 	const char *msg;
 	int err;
 
-	register_netdevice_notifier(&vti6_notifier_block);
-
 	msg = "tunnel device";
 	err = register_pernet_device(&vti6_net_ops);
 	if (err < 0)
@@ -1216,7 +1187,6 @@ xfrm_proto_ah_failed:
 xfrm_proto_esp_failed:
 	unregister_pernet_device(&vti6_net_ops);
 pernet_dev_failed:
-	unregister_netdevice_notifier(&vti6_notifier_block);
 	pr_err("vti6 init: failed to register %s\n", msg);
 	return err;
 }
@@ -1231,7 +1201,6 @@ static void __exit vti6_tunnel_cleanup(void)
 	xfrm6_protocol_deregister(&vti_ah6_protocol, IPPROTO_AH);
 	xfrm6_protocol_deregister(&vti_esp6_protocol, IPPROTO_ESP);
 	unregister_pernet_device(&vti6_net_ops);
-	unregister_netdevice_notifier(&vti6_notifier_block);
 }
 
 module_init(vti6_tunnel_init);
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index 7454850f2098..f5500f5444e9 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -1427,7 +1427,7 @@ int __init ip6_mr_init(void)
 	}
 #endif
 	rtnl_register(RTNL_FAMILY_IP6MR, RTM_GETROUTE, NULL,
-		      ip6mr_rtm_dumproute, NULL);
+		      ip6mr_rtm_dumproute, 0);
 	return 0;
 #ifdef CONFIG_IPV6_PIMSM_V2
 add_proto_fail:
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 0327c1f2e6fc..266a530414d7 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -127,7 +127,7 @@ struct neigh_table nd_tbl = {
 			[NEIGH_VAR_BASE_REACHABLE_TIME] = ND_REACHABLE_TIME,
 			[NEIGH_VAR_DELAY_PROBE_TIME] = 5 * HZ,
 			[NEIGH_VAR_GC_STALETIME] = 60 * HZ,
-			[NEIGH_VAR_QUEUE_LEN_BYTES] = 64 * 1024,
+			[NEIGH_VAR_QUEUE_LEN_BYTES] = SK_WMEM_MAX,
 			[NEIGH_VAR_PROXY_QLEN] = 64,
 			[NEIGH_VAR_ANYCAST_DELAY] = 1 * HZ,
 			[NEIGH_VAR_PROXY_DELAY] = (8 * HZ) / 10,
@@ -1779,6 +1779,7 @@ static int ndisc_netdev_event(struct notifier_block *this, unsigned long event,
 
 static struct notifier_block ndisc_netdev_notifier = {
 	.notifier_call = ndisc_netdev_event,
+	.priority = ADDRCONF_NOTIFY_PRIORITY - 5,
 };
 
 #ifdef CONFIG_SYSCTL
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index 1f90644056ac..54b1e75eded1 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -39,12 +39,6 @@ MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Netfilter Core Team <coreteam@netfilter.org>");
 MODULE_DESCRIPTION("IPv6 packet filter");
 
-#ifdef CONFIG_NETFILTER_DEBUG
-#define IP_NF_ASSERT(x)	WARN_ON(!(x))
-#else
-#define IP_NF_ASSERT(x)
-#endif
-
 void *ip6t_alloc_initial_table(const struct xt_table *info)
 {
 	return xt_alloc_initial_table(ip6t, IP6T);
@@ -176,7 +170,7 @@ static const char *const comments[] = {
 	[NF_IP6_TRACE_COMMENT_POLICY]	= "policy",
 };
 
-static struct nf_loginfo trace_loginfo = {
+static const struct nf_loginfo trace_loginfo = {
 	.type = NF_LOG_TYPE_LOG,
 	.u = {
 		.log = {
@@ -284,7 +278,7 @@ ip6t_do_table(struct sk_buff *skb,
 	acpar.hotdrop = false;
 	acpar.state   = state;
 
-	IP_NF_ASSERT(table->valid_hooks & (1 << hook));
+	WARN_ON(!(table->valid_hooks & (1 << hook)));
 
 	local_bh_disable();
 	addend = xt_write_recseq_begin();
@@ -315,7 +309,7 @@ ip6t_do_table(struct sk_buff *skb,
 		const struct xt_entry_match *ematch;
 		struct xt_counters *counter;
 
-		IP_NF_ASSERT(e);
+		WARN_ON(!e);
 		acpar.thoff = 0;
 		if (!ip6_packet_match(skb, indev, outdev, &e->ipv6,
 		    &acpar.thoff, &acpar.fragoff, &acpar.hotdrop)) {
@@ -335,7 +329,7 @@ ip6t_do_table(struct sk_buff *skb,
 		ADD_COUNTER(*counter, skb->len, 1);
 
 		t = ip6t_get_target_c(e);
-		IP_NF_ASSERT(t->u.kernel.target);
+		WARN_ON(!t->u.kernel.target);
 
 #if IS_ENABLED(CONFIG_NETFILTER_XT_TARGET_TRACE)
 		/* The packet is traced: log it */
diff --git a/net/ipv6/netfilter/ip6t_SYNPROXY.c b/net/ipv6/netfilter/ip6t_SYNPROXY.c
index ce203dd729e0..a5cd43d75393 100644
--- a/net/ipv6/netfilter/ip6t_SYNPROXY.c
+++ b/net/ipv6/netfilter/ip6t_SYNPROXY.c
@@ -438,7 +438,7 @@ static unsigned int ipv6_synproxy_hook(void *priv,
 	return NF_ACCEPT;
 }
 
-static struct nf_hook_ops ipv6_synproxy_ops[] __read_mostly = {
+static const struct nf_hook_ops ipv6_synproxy_ops[] = {
 	{
 		.hook		= ipv6_synproxy_hook,
 		.pf		= NFPROTO_IPV6,
diff --git a/net/ipv6/netfilter/ip6table_nat.c b/net/ipv6/netfilter/ip6table_nat.c
index 7d2bd940291f..991512576c8c 100644
--- a/net/ipv6/netfilter/ip6table_nat.c
+++ b/net/ipv6/netfilter/ip6table_nat.c
@@ -69,7 +69,7 @@ static unsigned int ip6table_nat_local_fn(void *priv,
 	return nf_nat_ipv6_local_fn(priv, skb, state, ip6table_nat_do_chain);
 }
 
-static struct nf_hook_ops nf_nat_ipv6_ops[] __read_mostly = {
+static const struct nf_hook_ops nf_nat_ipv6_ops[] = {
 	/* Before packet filtering, change destination */
 	{
 		.hook		= ip6table_nat_in,
diff --git a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
index 4e3402486833..fe01dc953c56 100644
--- a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
@@ -67,13 +67,6 @@ static bool ipv6_invert_tuple(struct nf_conntrack_tuple *tuple,
 	return true;
 }
 
-static void ipv6_print_tuple(struct seq_file *s,
-			    const struct nf_conntrack_tuple *tuple)
-{
-	seq_printf(s, "src=%pI6 dst=%pI6 ",
-		   tuple->src.u3.ip6, tuple->dst.u3.ip6);
-}
-
 static int ipv6_get_l4proto(const struct sk_buff *skb, unsigned int nhoff,
 			    unsigned int *dataoff, u_int8_t *protonum)
 {
@@ -191,7 +184,7 @@ static unsigned int ipv6_conntrack_local(void *priv,
 	return nf_conntrack_in(state->net, PF_INET6, state->hook, skb);
 }
 
-static struct nf_hook_ops ipv6_conntrack_ops[] __read_mostly = {
+static const struct nf_hook_ops ipv6_conntrack_ops[] = {
 	{
 		.hook		= ipv6_conntrack_in,
 		.pf		= NFPROTO_IPV6,
@@ -308,11 +301,6 @@ static int ipv6_nlattr_to_tuple(struct nlattr *tb[],
 
 	return 0;
 }
-
-static int ipv6_nlattr_tuple_size(void)
-{
-	return nla_policy_len(ipv6_nla_policy, CTA_IP_MAX + 1);
-}
 #endif
 
 static int ipv6_hooks_register(struct net *net)
@@ -353,16 +341,15 @@ static void ipv6_hooks_unregister(struct net *net)
 
 struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv6 __read_mostly = {
 	.l3proto		= PF_INET6,
-	.name			= "ipv6",
 	.pkt_to_tuple		= ipv6_pkt_to_tuple,
 	.invert_tuple		= ipv6_invert_tuple,
-	.print_tuple		= ipv6_print_tuple,
 	.get_l4proto		= ipv6_get_l4proto,
 #if IS_ENABLED(CONFIG_NF_CT_NETLINK)
 	.tuple_to_nlattr	= ipv6_tuple_to_nlattr,
-	.nlattr_tuple_size	= ipv6_nlattr_tuple_size,
 	.nlattr_to_tuple	= ipv6_nlattr_to_tuple,
 	.nla_policy		= ipv6_nla_policy,
+	.nla_size		= NLA_ALIGN(NLA_HDRLEN + sizeof(u32[4])) +
+				  NLA_ALIGN(NLA_HDRLEN + sizeof(u32[4])),
 #endif
 	.net_ns_get		= ipv6_hooks_register,
 	.net_ns_put		= ipv6_hooks_unregister,
@@ -398,25 +385,12 @@ static struct nf_conntrack_l4proto *builtin_l4proto6[] = {
 
 static int ipv6_net_init(struct net *net)
 {
-	int ret = 0;
-
-	ret = nf_ct_l4proto_pernet_register(net, builtin_l4proto6,
-					    ARRAY_SIZE(builtin_l4proto6));
-	if (ret < 0)
-		return ret;
-
-	ret = nf_ct_l3proto_pernet_register(net, &nf_conntrack_l3proto_ipv6);
-	if (ret < 0) {
-		pr_err("nf_conntrack_ipv6: pernet registration failed.\n");
-		nf_ct_l4proto_pernet_unregister(net, builtin_l4proto6,
-						ARRAY_SIZE(builtin_l4proto6));
-	}
-	return ret;
+	return nf_ct_l4proto_pernet_register(net, builtin_l4proto6,
+					     ARRAY_SIZE(builtin_l4proto6));
 }
 
 static void ipv6_net_exit(struct net *net)
 {
-	nf_ct_l3proto_pernet_unregister(net, &nf_conntrack_l3proto_ipv6);
 	nf_ct_l4proto_pernet_unregister(net, builtin_l4proto6,
 					ARRAY_SIZE(builtin_l4proto6));
 }
@@ -434,6 +408,12 @@ static int __init nf_conntrack_l3proto_ipv6_init(void)
 
 	need_conntrack();
 
+#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
+	if (WARN_ON(nla_policy_len(ipv6_nla_policy, CTA_IP_MAX + 1) !=
+	    nf_conntrack_l3proto_ipv6.nla_size))
+		return -EINVAL;
+#endif
+
 	ret = nf_register_sockopt(&so_getorigdst6);
 	if (ret < 0) {
 		pr_err("Unable to register netfilter socket option\n");
diff --git a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
index d5f028e33f65..a9e1fd1a8536 100644
--- a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
@@ -84,16 +84,6 @@ static bool icmpv6_invert_tuple(struct nf_conntrack_tuple *tuple,
 	return true;
 }
 
-/* Print out the per-protocol part of the tuple. */
-static void icmpv6_print_tuple(struct seq_file *s,
-			      const struct nf_conntrack_tuple *tuple)
-{
-	seq_printf(s, "type=%u code=%u id=%u ",
-		   tuple->dst.u.icmp.type,
-		   tuple->dst.u.icmp.code,
-		   ntohs(tuple->src.u.icmp.id));
-}
-
 static unsigned int *icmpv6_get_timeouts(struct net *net)
 {
 	return &icmpv6_pernet(net)->timeout;
@@ -105,7 +95,6 @@ static int icmpv6_packet(struct nf_conn *ct,
 		       unsigned int dataoff,
 		       enum ip_conntrack_info ctinfo,
 		       u_int8_t pf,
-		       unsigned int hooknum,
 		       unsigned int *timeout)
 {
 	/* Do not immediately delete the connection after the first
@@ -131,11 +120,6 @@ static bool icmpv6_new(struct nf_conn *ct, const struct sk_buff *skb,
 		pr_debug("icmpv6: can't create new conn with type %u\n",
 			 type + 128);
 		nf_ct_dump_tuple_ipv6(&ct->tuplehash[0].tuple);
-		if (LOG_INVALID(nf_ct_net(ct), IPPROTO_ICMPV6))
-			nf_log_packet(nf_ct_net(ct), PF_INET6, 0, skb, NULL,
-				      NULL, NULL,
-				      "nf_ct_icmpv6: invalid new with type %d ",
-				      type + 128);
 		return false;
 	}
 	return true;
@@ -144,8 +128,7 @@ static bool icmpv6_new(struct nf_conn *ct, const struct sk_buff *skb,
 static int
 icmpv6_error_message(struct net *net, struct nf_conn *tmpl,
 		     struct sk_buff *skb,
-		     unsigned int icmp6off,
-		     unsigned int hooknum)
+		     unsigned int icmp6off)
 {
 	struct nf_conntrack_tuple intuple, origtuple;
 	const struct nf_conntrack_tuple_hash *h;
@@ -153,7 +136,7 @@ icmpv6_error_message(struct net *net, struct nf_conn *tmpl,
 	enum ip_conntrack_info ctinfo;
 	struct nf_conntrack_zone tmp;
 
-	NF_CT_ASSERT(!skb_nfct(skb));
+	WARN_ON(skb_nfct(skb));
 
 	/* Are they talking about one of our connections? */
 	if (!nf_ct_get_tuplepr(skb,
@@ -229,7 +212,7 @@ icmpv6_error(struct net *net, struct nf_conn *tmpl,
 	if (icmp6h->icmp6_type >= 128)
 		return NF_ACCEPT;
 
-	return icmpv6_error_message(net, tmpl, skb, dataoff, hooknum);
+	return icmpv6_error_message(net, tmpl, skb, dataoff);
 }
 
 #if IS_ENABLED(CONFIG_NF_CT_NETLINK)
@@ -367,10 +350,8 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_icmpv6 __read_mostly =
 {
 	.l3proto		= PF_INET6,
 	.l4proto		= IPPROTO_ICMPV6,
-	.name			= "icmpv6",
 	.pkt_to_tuple		= icmpv6_pkt_to_tuple,
 	.invert_tuple		= icmpv6_invert_tuple,
-	.print_tuple		= icmpv6_print_tuple,
 	.packet			= icmpv6_packet,
 	.get_timeouts		= icmpv6_get_timeouts,
 	.new			= icmpv6_new,
diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c
index 986d4ca38832..b263bf3a19f7 100644
--- a/net/ipv6/netfilter/nf_conntrack_reasm.c
+++ b/net/ipv6/netfilter/nf_conntrack_reasm.c
@@ -622,18 +622,12 @@ EXPORT_SYMBOL_GPL(nf_ct_frag6_gather);
 
 static int nf_ct_net_init(struct net *net)
 {
-	int res;
-
 	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;
-	res = inet_frags_init_net(&net->nf_frag.frags);
-	if (res)
-		return res;
-	res = nf_ct_frag6_sysctl_register(net);
-	if (res)
-		inet_frags_uninit_net(&net->nf_frag.frags);
-	return res;
+	inet_frags_init_net(&net->nf_frag.frags);
+
+	return nf_ct_frag6_sysctl_register(net);
 }
 
 static void nf_ct_net_exit(struct net *net)
diff --git a/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c b/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c
index ada60d1a991b..b326da59257f 100644
--- a/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c
+++ b/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c
@@ -74,7 +74,7 @@ static unsigned int ipv6_defrag(void *priv,
 	return err == 0 ? NF_ACCEPT : NF_DROP;
 }
 
-static struct nf_hook_ops ipv6_defrag_ops[] = {
+static const struct nf_hook_ops ipv6_defrag_ops[] = {
 	{
 		.hook		= ipv6_defrag,
 		.pf		= NFPROTO_IPV6,
diff --git a/net/ipv6/netfilter/nf_log_ipv6.c b/net/ipv6/netfilter/nf_log_ipv6.c
index 97c724224da7..b397a8fe88b9 100644
--- a/net/ipv6/netfilter/nf_log_ipv6.c
+++ b/net/ipv6/netfilter/nf_log_ipv6.c
@@ -25,7 +25,7 @@
 #include <linux/netfilter/xt_LOG.h>
 #include <net/netfilter/nf_log.h>
 
-static struct nf_loginfo default_loginfo = {
+static const struct nf_loginfo default_loginfo = {
 	.type	= NF_LOG_TYPE_LOG,
 	.u = {
 		.log = {
diff --git a/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c b/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c
index b2b4f031b3a1..46d6dba50698 100644
--- a/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c
+++ b/net/ipv6/netfilter/nf_nat_l3proto_ipv6.c
@@ -196,7 +196,7 @@ int nf_nat_icmpv6_reply_translation(struct sk_buff *skb,
 	struct nf_conntrack_tuple target;
 	unsigned long statusbit;
 
-	NF_CT_ASSERT(ctinfo == IP_CT_RELATED || ctinfo == IP_CT_RELATED_REPLY);
+	WARN_ON(ctinfo != IP_CT_RELATED && ctinfo != IP_CT_RELATED_REPLY);
 
 	if (!skb_make_writable(skb, hdrlen + sizeof(*inside)))
 		return 0;
@@ -319,8 +319,8 @@ nf_nat_ipv6_fn(void *priv, struct sk_buff *skb,
 
 	default:
 		/* ESTABLISHED */
-		NF_CT_ASSERT(ctinfo == IP_CT_ESTABLISHED ||
-			     ctinfo == IP_CT_ESTABLISHED_REPLY);
+		WARN_ON(ctinfo != IP_CT_ESTABLISHED &&
+			ctinfo != IP_CT_ESTABLISHED_REPLY);
 		if (nf_nat_oif_changed(state->hook, ctinfo, nat, state->out))
 			goto oif_changed;
 	}
diff --git a/net/ipv6/netfilter/nf_nat_masquerade_ipv6.c b/net/ipv6/netfilter/nf_nat_masquerade_ipv6.c
index d7b679037bae..98f61fcb9108 100644
--- a/net/ipv6/netfilter/nf_nat_masquerade_ipv6.c
+++ b/net/ipv6/netfilter/nf_nat_masquerade_ipv6.c
@@ -36,8 +36,8 @@ nf_nat_masquerade_ipv6(struct sk_buff *skb, const struct nf_nat_range *range,
 	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));
+	WARN_ON(!(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED ||
+			 ctinfo == IP_CT_RELATED_REPLY)));
 
 	if (ipv6_dev_get_saddr(nf_ct_net(ct), out,
 			       &ipv6_hdr(skb)->daddr, 0, &src) < 0)
diff --git a/net/ipv6/netfilter/nft_fib_ipv6.c b/net/ipv6/netfilter/nft_fib_ipv6.c
index 43f91d9b086c..54b5899543ef 100644
--- a/net/ipv6/netfilter/nft_fib_ipv6.c
+++ b/net/ipv6/netfilter/nft_fib_ipv6.c
@@ -25,9 +25,9 @@ static int get_ifindex(const struct net_device *dev)
 
 static int nft_fib6_flowi_init(struct flowi6 *fl6, const struct nft_fib *priv,
 			       const struct nft_pktinfo *pkt,
-			       const struct net_device *dev)
+			       const struct net_device *dev,
+			       struct ipv6hdr *iph)
 {
-	const struct ipv6hdr *iph = ipv6_hdr(pkt->skb);
 	int lookup_flags = 0;
 
 	if (priv->flags & NFTA_FIB_F_DADDR) {
@@ -55,7 +55,8 @@ static int nft_fib6_flowi_init(struct flowi6 *fl6, const struct nft_fib *priv,
 }
 
 static u32 __nft_fib6_eval_type(const struct nft_fib *priv,
-				const struct nft_pktinfo *pkt)
+				const struct nft_pktinfo *pkt,
+				struct ipv6hdr *iph)
 {
 	const struct net_device *dev = NULL;
 	const struct nf_ipv6_ops *v6ops;
@@ -77,7 +78,7 @@ static u32 __nft_fib6_eval_type(const struct nft_fib *priv,
 	else if (priv->flags & NFTA_FIB_F_OIF)
 		dev = nft_out(pkt);
 
-	nft_fib6_flowi_init(&fl6, priv, pkt, dev);
+	nft_fib6_flowi_init(&fl6, priv, pkt, dev, iph);
 
 	v6ops = nf_get_ipv6_ops();
 	if (dev && v6ops && v6ops->chk_addr(nft_net(pkt), &fl6.daddr, dev, true))
@@ -131,9 +132,17 @@ void nft_fib6_eval_type(const struct nft_expr *expr, struct nft_regs *regs,
 			const struct nft_pktinfo *pkt)
 {
 	const struct nft_fib *priv = nft_expr_priv(expr);
+	int noff = skb_network_offset(pkt->skb);
 	u32 *dest = &regs->data[priv->dreg];
+	struct ipv6hdr *iph, _iph;
 
-	*dest = __nft_fib6_eval_type(priv, pkt);
+	iph = skb_header_pointer(pkt->skb, noff, sizeof(_iph), &_iph);
+	if (!iph) {
+		regs->verdict.code = NFT_BREAK;
+		return;
+	}
+
+	*dest = __nft_fib6_eval_type(priv, pkt, iph);
 }
 EXPORT_SYMBOL_GPL(nft_fib6_eval_type);
 
@@ -141,8 +150,10 @@ void nft_fib6_eval(const struct nft_expr *expr, struct nft_regs *regs,
 		   const struct nft_pktinfo *pkt)
 {
 	const struct nft_fib *priv = nft_expr_priv(expr);
+	int noff = skb_network_offset(pkt->skb);
 	const struct net_device *oif = NULL;
 	u32 *dest = &regs->data[priv->dreg];
+	struct ipv6hdr *iph, _iph;
 	struct flowi6 fl6 = {
 		.flowi6_iif = LOOPBACK_IFINDEX,
 		.flowi6_proto = pkt->tprot,
@@ -155,7 +166,13 @@ void nft_fib6_eval(const struct nft_expr *expr, struct nft_regs *regs,
 	else if (priv->flags & NFTA_FIB_F_OIF)
 		oif = nft_out(pkt);
 
-	lookup_flags = nft_fib6_flowi_init(&fl6, priv, pkt, oif);
+	iph = skb_header_pointer(pkt->skb, noff, sizeof(_iph), &_iph);
+	if (!iph) {
+		regs->verdict.code = NFT_BREAK;
+		return;
+	}
+
+	lookup_flags = nft_fib6_flowi_init(&fl6, priv, pkt, oif, iph);
 
 	if (nft_hook(pkt) == NF_INET_PRE_ROUTING &&
 	    nft_fib_is_loopback(pkt->skb, nft_in(pkt))) {
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 60be012fe708..e4462b0ff801 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -72,7 +72,7 @@ EXPORT_SYMBOL_GPL(raw_v6_hashinfo);
 
 struct sock *__raw_v6_lookup(struct net *net, struct sock *sk,
 		unsigned short num, const struct in6_addr *loc_addr,
-		const struct in6_addr *rmt_addr, int dif)
+		const struct in6_addr *rmt_addr, int dif, int sdif)
 {
 	bool is_multicast = ipv6_addr_is_multicast(loc_addr);
 
@@ -86,7 +86,9 @@ struct sock *__raw_v6_lookup(struct net *net, struct sock *sk,
 			    !ipv6_addr_equal(&sk->sk_v6_daddr, rmt_addr))
 				continue;
 
-			if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif)
+			if (sk->sk_bound_dev_if &&
+			    sk->sk_bound_dev_if != dif &&
+			    sk->sk_bound_dev_if != sdif)
 				continue;
 
 			if (!ipv6_addr_any(&sk->sk_v6_rcv_saddr)) {
@@ -178,7 +180,8 @@ static bool ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
 		goto out;
 
 	net = dev_net(skb->dev);
-	sk = __raw_v6_lookup(net, sk, nexthdr, daddr, saddr, inet6_iif(skb));
+	sk = __raw_v6_lookup(net, sk, nexthdr, daddr, saddr,
+			     inet6_iif(skb), inet6_sdif(skb));
 
 	while (sk) {
 		int filtered;
@@ -222,7 +225,7 @@ static bool ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
 			}
 		}
 		sk = __raw_v6_lookup(net, sk_next(sk), nexthdr, daddr, saddr,
-				     inet6_iif(skb));
+				     inet6_iif(skb), inet6_sdif(skb));
 	}
 out:
 	read_unlock(&raw_v6_hashinfo.lock);
@@ -378,7 +381,7 @@ void raw6_icmp_error(struct sk_buff *skb, int nexthdr,
 		net = dev_net(skb->dev);
 
 		while ((sk = __raw_v6_lookup(net, sk, nexthdr, saddr, daddr,
-						inet6_iif(skb)))) {
+					     inet6_iif(skb), inet6_iif(skb)))) {
 			rawv6_err(sk, skb, NULL, type, code,
 					inner_offset, info);
 			sk = sk_next(sk);
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index e1da5b888cc4..846012eae526 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -714,19 +714,13 @@ static void ip6_frags_sysctl_unregister(void)
 
 static int __net_init ipv6_frags_init_net(struct net *net)
 {
-	int res;
-
 	net->ipv6.frags.high_thresh = IPV6_FRAG_HIGH_THRESH;
 	net->ipv6.frags.low_thresh = IPV6_FRAG_LOW_THRESH;
 	net->ipv6.frags.timeout = IPV6_FRAG_TIMEOUT;
 
-	res = inet_frags_init_net(&net->ipv6.frags);
-	if (res)
-		return res;
-	res = ip6_frags_ns_sysctl_register(net);
-	if (res)
-		inet_frags_uninit_net(&net->ipv6.frags);
-	return res;
+	inet_frags_init_net(&net->ipv6.frags);
+
+	return ip6_frags_ns_sysctl_register(net);
 }
 
 static void __net_exit ipv6_frags_exit_net(struct net *net)
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 2d0e7798c793..26cc9f483b6d 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -446,16 +446,6 @@ static bool rt6_check_expired(const struct rt6_info *rt)
 	return false;
 }
 
-/* Multipath route selection:
- *   Hash based function using packet header and flowlabel.
- * Adapted from fib_info_hashfn()
- */
-static int rt6_info_hash_nhsfn(unsigned int candidate_count,
-			       const struct flowi6 *fl6)
-{
-	return get_hash_from_flowi6(fl6) % candidate_count;
-}
-
 static struct rt6_info *rt6_multipath_select(struct rt6_info *match,
 					     struct flowi6 *fl6, int oif,
 					     int strict)
@@ -463,7 +453,13 @@ static struct rt6_info *rt6_multipath_select(struct rt6_info *match,
 	struct rt6_info *sibling, *next_sibling;
 	int route_choosen;
 
-	route_choosen = rt6_info_hash_nhsfn(match->rt6i_nsiblings + 1, fl6);
+	/* We might have already computed the hash for ICMPv6 errors. In such
+	 * case it will always be non-zero. Otherwise now is the time to do it.
+	 */
+	if (!fl6->mp_hash)
+		fl6->mp_hash = rt6_multipath_hash(fl6, NULL);
+
+	route_choosen = fl6->mp_hash % (match->rt6i_nsiblings + 1);
 	/* Don't change the route, if route_choosen == 0
 	 * (siblings does not include ourself)
 	 */
@@ -959,10 +955,34 @@ int ip6_ins_rt(struct rt6_info *rt)
 	return __ip6_ins_rt(rt, &info, &mxc, NULL);
 }
 
+/* called with rcu_lock held */
+static struct net_device *ip6_rt_get_dev_rcu(struct rt6_info *rt)
+{
+	struct net_device *dev = rt->dst.dev;
+
+	if (rt->rt6i_flags & RTF_LOCAL) {
+		/* for copies of local routes, dst->dev needs to be the
+		 * device if it is a master device, the master device if
+		 * device is enslaved, and the loopback as the default
+		 */
+		if (netif_is_l3_slave(dev) &&
+		    !rt6_need_strict(&rt->rt6i_dst.addr))
+			dev = l3mdev_master_dev_rcu(dev);
+		else if (!netif_is_l3_master(dev))
+			dev = dev_net(dev)->loopback_dev;
+		/* last case is netif_is_l3_master(dev) is true in which
+		 * case we want dev returned to be dev
+		 */
+	}
+
+	return dev;
+}
+
 static struct rt6_info *ip6_rt_cache_alloc(struct rt6_info *ort,
 					   const struct in6_addr *daddr,
 					   const struct in6_addr *saddr)
 {
+	struct net_device *dev;
 	struct rt6_info *rt;
 
 	/*
@@ -972,8 +992,10 @@ static struct rt6_info *ip6_rt_cache_alloc(struct rt6_info *ort,
 	if (ort->rt6i_flags & (RTF_CACHE | RTF_PCPU))
 		ort = (struct rt6_info *)ort->dst.from;
 
-	rt = __ip6_dst_alloc(dev_net(ort->dst.dev), ort->dst.dev, 0);
-
+	rcu_read_lock();
+	dev = ip6_rt_get_dev_rcu(ort);
+	rt = __ip6_dst_alloc(dev_net(dev), dev, 0);
+	rcu_read_unlock();
 	if (!rt)
 		return NULL;
 
@@ -1001,11 +1023,13 @@ static struct rt6_info *ip6_rt_cache_alloc(struct rt6_info *ort,
 
 static struct rt6_info *ip6_rt_pcpu_alloc(struct rt6_info *rt)
 {
+	struct net_device *dev;
 	struct rt6_info *pcpu_rt;
 
-	pcpu_rt = __ip6_dst_alloc(dev_net(rt->dst.dev),
-				  rt->dst.dev, rt->dst.flags);
-
+	rcu_read_lock();
+	dev = ip6_rt_get_dev_rcu(rt);
+	pcpu_rt = __ip6_dst_alloc(dev_net(dev), dev, rt->dst.flags);
+	rcu_read_unlock();
 	if (!pcpu_rt)
 		return NULL;
 	ip6_rt_copy_init(pcpu_rt, rt);
@@ -1187,6 +1211,54 @@ struct dst_entry *ip6_route_input_lookup(struct net *net,
 }
 EXPORT_SYMBOL_GPL(ip6_route_input_lookup);
 
+static void ip6_multipath_l3_keys(const struct sk_buff *skb,
+				  struct flow_keys *keys)
+{
+	const struct ipv6hdr *outer_iph = ipv6_hdr(skb);
+	const struct ipv6hdr *key_iph = outer_iph;
+	const struct ipv6hdr *inner_iph;
+	const struct icmp6hdr *icmph;
+	struct ipv6hdr _inner_iph;
+
+	if (likely(outer_iph->nexthdr != IPPROTO_ICMPV6))
+		goto out;
+
+	icmph = icmp6_hdr(skb);
+	if (icmph->icmp6_type != ICMPV6_DEST_UNREACH &&
+	    icmph->icmp6_type != ICMPV6_PKT_TOOBIG &&
+	    icmph->icmp6_type != ICMPV6_TIME_EXCEED &&
+	    icmph->icmp6_type != ICMPV6_PARAMPROB)
+		goto out;
+
+	inner_iph = skb_header_pointer(skb,
+				       skb_transport_offset(skb) + sizeof(*icmph),
+				       sizeof(_inner_iph), &_inner_iph);
+	if (!inner_iph)
+		goto out;
+
+	key_iph = inner_iph;
+out:
+	memset(keys, 0, sizeof(*keys));
+	keys->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
+	keys->addrs.v6addrs.src = key_iph->saddr;
+	keys->addrs.v6addrs.dst = key_iph->daddr;
+	keys->tags.flow_label = ip6_flowinfo(key_iph);
+	keys->basic.ip_proto = key_iph->nexthdr;
+}
+
+/* if skb is set it will be used and fl6 can be NULL */
+u32 rt6_multipath_hash(const struct flowi6 *fl6, const struct sk_buff *skb)
+{
+	struct flow_keys hash_keys;
+
+	if (skb) {
+		ip6_multipath_l3_keys(skb, &hash_keys);
+		return flow_hash_from_keys(&hash_keys);
+	}
+
+	return get_hash_from_flowi6(fl6);
+}
+
 void ip6_route_input(struct sk_buff *skb)
 {
 	const struct ipv6hdr *iph = ipv6_hdr(skb);
@@ -1205,6 +1277,8 @@ void ip6_route_input(struct sk_buff *skb)
 	tun_info = skb_tunnel_info(skb);
 	if (tun_info && !(tun_info->mode & IP_TUNNEL_INFO_TX))
 		fl6.flowi6_tun_key.tun_id = tun_info->key.tun_id;
+	if (unlikely(fl6.flowi6_proto == IPPROTO_ICMPV6))
+		fl6.mp_hash = rt6_multipath_hash(&fl6, skb);
 	skb_dst_drop(skb);
 	skb_dst_set(skb, ip6_route_input_lookup(net, skb->dev, &fl6, flags));
 }
@@ -2698,15 +2772,9 @@ struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
 {
 	u32 tb_id;
 	struct net *net = dev_net(idev->dev);
-	struct net_device *dev = net->loopback_dev;
+	struct net_device *dev = idev->dev;
 	struct rt6_info *rt;
 
-	/* use L3 Master device as loopback for host routes if device
-	 * is enslaved and address is not link local or multicast
-	 */
-	if (!rt6_need_strict(addr))
-		dev = l3mdev_master_dev_rcu(idev->dev) ? : dev;
-
 	rt = ip6_dst_alloc(net, dev, DST_NOCOUNT);
 	if (!rt)
 		return ERR_PTR(-ENOMEM);
@@ -3337,6 +3405,9 @@ static int rt6_nexthop_info(struct sk_buff *skb, struct rt6_info *rt,
 			goto nla_put_failure;
 	}
 
+	if (rt->rt6i_nh_flags & RTNH_F_OFFLOAD)
+		*flags |= RTNH_F_OFFLOAD;
+
 	/* not needed for multipath encoding b/c it has a rtnexthop struct */
 	if (!skip_oif && rt->dst.dev &&
 	    nla_put_u32(skb, RTA_OIF, rt->dst.dev->ifindex))
@@ -3615,8 +3686,11 @@ static int inet6_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh,
 		struct net_device *dev;
 		int flags = 0;
 
-		dev = __dev_get_by_index(net, iif);
+		rcu_read_lock();
+
+		dev = dev_get_by_index_rcu(net, iif);
 		if (!dev) {
+			rcu_read_unlock();
 			err = -ENODEV;
 			goto errout;
 		}
@@ -3628,15 +3702,19 @@ static int inet6_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh,
 
 		if (!fibmatch)
 			dst = ip6_route_input_lookup(net, dev, &fl6, flags);
+		else
+			dst = ip6_route_lookup(net, &fl6, 0);
+
+		rcu_read_unlock();
 	} else {
 		fl6.flowi6_oif = oif;
 
 		if (!fibmatch)
 			dst = ip6_route_output(net, NULL, &fl6);
+		else
+			dst = ip6_route_lookup(net, &fl6, 0);
 	}
 
-	if (fibmatch)
-		dst = ip6_route_lookup(net, &fl6, 0);
 
 	rt = container_of(dst, struct rt6_info, dst);
 	if (rt->dst.error) {
@@ -3928,6 +4006,7 @@ static int __net_init ip6_route_net_init(struct net *net)
 			 ip6_template_metrics, true);
 
 #ifdef CONFIG_IPV6_MULTIPLE_TABLES
+	net->ipv6.fib6_has_custom_rules = false;
 	net->ipv6.ip6_prohibit_entry = kmemdup(&ip6_prohibit_entry_template,
 					       sizeof(*net->ipv6.ip6_prohibit_entry),
 					       GFP_KERNEL);
@@ -4103,9 +4182,10 @@ int __init ip6_route_init(void)
 		goto fib6_rules_init;
 
 	ret = -ENOBUFS;
-	if (__rtnl_register(PF_INET6, RTM_NEWROUTE, inet6_rtm_newroute, NULL, NULL) ||
-	    __rtnl_register(PF_INET6, RTM_DELROUTE, inet6_rtm_delroute, NULL, NULL) ||
-	    __rtnl_register(PF_INET6, RTM_GETROUTE, inet6_rtm_getroute, NULL, NULL))
+	if (__rtnl_register(PF_INET6, RTM_NEWROUTE, inet6_rtm_newroute, NULL, 0) ||
+	    __rtnl_register(PF_INET6, RTM_DELROUTE, inet6_rtm_delroute, NULL, 0) ||
+	    __rtnl_register(PF_INET6, RTM_GETROUTE, inet6_rtm_getroute, NULL,
+			    RTNL_FLAG_DOIT_UNLOCKED))
 		goto out_register_late_subsys;
 
 	ret = register_netdevice_notifier(&ip6_route_dev_notifier);
diff --git a/net/ipv6/seg6.c b/net/ipv6/seg6.c
index 15fba55e3da8..c81407770956 100644
--- a/net/ipv6/seg6.c
+++ b/net/ipv6/seg6.c
@@ -40,7 +40,7 @@ bool seg6_validate_srh(struct ipv6_sr_hdr *srh, int len)
 	if (((srh->hdrlen + 1) << 3) != len)
 		return false;
 
-	if (srh->segments_left != srh->first_segment)
+	if (srh->segments_left > srh->first_segment)
 		return false;
 
 	tlv_offset = sizeof(*srh) + ((srh->first_segment + 1) << 4);
@@ -456,6 +456,10 @@ int __init seg6_init(void)
 	err = seg6_iptunnel_init();
 	if (err)
 		goto out_unregister_pernet;
+
+	err = seg6_local_init();
+	if (err)
+		goto out_unregister_pernet;
 #endif
 
 #ifdef CONFIG_IPV6_SEG6_HMAC
@@ -471,6 +475,7 @@ out:
 #ifdef CONFIG_IPV6_SEG6_HMAC
 out_unregister_iptun:
 #ifdef CONFIG_IPV6_SEG6_LWTUNNEL
+	seg6_local_exit();
 	seg6_iptunnel_exit();
 #endif
 #endif
diff --git a/net/ipv6/seg6_hmac.c b/net/ipv6/seg6_hmac.c
index f950cb53d5e3..33fb35cbfac1 100644
--- a/net/ipv6/seg6_hmac.c
+++ b/net/ipv6/seg6_hmac.c
@@ -12,6 +12,7 @@
  */
 
 #include <linux/errno.h>
+#include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/socket.h>
 #include <linux/sockios.h>
@@ -110,7 +111,7 @@ static struct seg6_hmac_algo *__hmac_get_algo(u8 alg_id)
 	struct seg6_hmac_algo *algo;
 	int i, alg_count;
 
-	alg_count = sizeof(hmac_algos) / sizeof(struct seg6_hmac_algo);
+	alg_count = ARRAY_SIZE(hmac_algos);
 	for (i = 0; i < alg_count; i++) {
 		algo = &hmac_algos[i];
 		if (algo->alg_id == alg_id)
@@ -360,7 +361,7 @@ static int seg6_hmac_init_algo(void)
 	struct shash_desc *shash;
 	int i, alg_count, cpu;
 
-	alg_count = sizeof(hmac_algos) / sizeof(struct seg6_hmac_algo);
+	alg_count = ARRAY_SIZE(hmac_algos);
 
 	for (i = 0; i < alg_count; i++) {
 		struct crypto_shash **p_tfm;
@@ -421,7 +422,7 @@ void seg6_hmac_exit(void)
 	struct seg6_hmac_algo *algo = NULL;
 	int i, alg_count, cpu;
 
-	alg_count = sizeof(hmac_algos) / sizeof(struct seg6_hmac_algo);
+	alg_count = ARRAY_SIZE(hmac_algos);
 	for (i = 0; i < alg_count; i++) {
 		algo = &hmac_algos[i];
 		for_each_possible_cpu(cpu) {
diff --git a/net/ipv6/seg6_iptunnel.c b/net/ipv6/seg6_iptunnel.c
index 264d772d3c7d..bd6cc688bd19 100644
--- a/net/ipv6/seg6_iptunnel.c
+++ b/net/ipv6/seg6_iptunnel.c
@@ -91,7 +91,7 @@ static void set_tun_src(struct net *net, struct net_device *dev,
 }
 
 /* encapsulate an IPv6 packet within an outer IPv6 header with a given SRH */
-static int seg6_do_srh_encap(struct sk_buff *skb, struct ipv6_sr_hdr *osrh)
+int seg6_do_srh_encap(struct sk_buff *skb, struct ipv6_sr_hdr *osrh, int proto)
 {
 	struct net *net = dev_net(skb_dst(skb)->dev);
 	struct ipv6hdr *hdr, *inner_hdr;
@@ -116,15 +116,22 @@ static int seg6_do_srh_encap(struct sk_buff *skb, struct ipv6_sr_hdr *osrh)
 	 * hlim will be decremented in ip6_forward() afterwards and
 	 * decapsulation will overwrite inner hlim with outer hlim
 	 */
-	ip6_flow_hdr(hdr, ip6_tclass(ip6_flowinfo(inner_hdr)),
-		     ip6_flowlabel(inner_hdr));
-	hdr->hop_limit = inner_hdr->hop_limit;
+
+	if (skb->protocol == htons(ETH_P_IPV6)) {
+		ip6_flow_hdr(hdr, ip6_tclass(ip6_flowinfo(inner_hdr)),
+			     ip6_flowlabel(inner_hdr));
+		hdr->hop_limit = inner_hdr->hop_limit;
+	} else {
+		ip6_flow_hdr(hdr, 0, 0);
+		hdr->hop_limit = ip6_dst_hoplimit(skb_dst(skb));
+	}
+
 	hdr->nexthdr = NEXTHDR_ROUTING;
 
 	isrh = (void *)hdr + sizeof(*hdr);
 	memcpy(isrh, osrh, hdrlen);
 
-	isrh->nexthdr = NEXTHDR_IPV6;
+	isrh->nexthdr = proto;
 
 	hdr->daddr = isrh->segments[isrh->first_segment];
 	set_tun_src(net, skb->dev, &hdr->daddr, &hdr->saddr);
@@ -141,10 +148,10 @@ static int seg6_do_srh_encap(struct sk_buff *skb, struct ipv6_sr_hdr *osrh)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(seg6_do_srh_encap);
 
 /* insert an SRH within an IPv6 packet, just after the IPv6 header */
-#ifdef CONFIG_IPV6_SEG6_INLINE
-static int seg6_do_srh_inline(struct sk_buff *skb, struct ipv6_sr_hdr *osrh)
+int seg6_do_srh_inline(struct sk_buff *skb, struct ipv6_sr_hdr *osrh)
 {
 	struct ipv6hdr *hdr, *oldhdr;
 	struct ipv6_sr_hdr *isrh;
@@ -193,13 +200,13 @@ static int seg6_do_srh_inline(struct sk_buff *skb, struct ipv6_sr_hdr *osrh)
 
 	return 0;
 }
-#endif
+EXPORT_SYMBOL_GPL(seg6_do_srh_inline);
 
 static int seg6_do_srh(struct sk_buff *skb)
 {
 	struct dst_entry *dst = skb_dst(skb);
 	struct seg6_iptunnel_encap *tinfo;
-	int err = 0;
+	int proto, err = 0;
 
 	tinfo = seg6_encap_lwtunnel(dst->lwtstate);
 
@@ -209,19 +216,47 @@ static int seg6_do_srh(struct sk_buff *skb)
 	}
 
 	switch (tinfo->mode) {
-#ifdef CONFIG_IPV6_SEG6_INLINE
 	case SEG6_IPTUN_MODE_INLINE:
+		if (skb->protocol != htons(ETH_P_IPV6))
+			return -EINVAL;
+
 		err = seg6_do_srh_inline(skb, tinfo->srh);
+		if (err)
+			return err;
+
 		skb_reset_inner_headers(skb);
 		break;
-#endif
 	case SEG6_IPTUN_MODE_ENCAP:
-		err = seg6_do_srh_encap(skb, tinfo->srh);
+		if (skb->protocol == htons(ETH_P_IPV6))
+			proto = IPPROTO_IPV6;
+		else if (skb->protocol == htons(ETH_P_IP))
+			proto = IPPROTO_IPIP;
+		else
+			return -EINVAL;
+
+		err = seg6_do_srh_encap(skb, tinfo->srh, proto);
+		if (err)
+			return err;
+
+		skb->protocol = htons(ETH_P_IPV6);
 		break;
-	}
+	case SEG6_IPTUN_MODE_L2ENCAP:
+		if (!skb_mac_header_was_set(skb))
+			return -EINVAL;
 
-	if (err)
-		return err;
+		if (pskb_expand_head(skb, skb->mac_len, 0, GFP_ATOMIC) < 0)
+			return -ENOMEM;
+
+		skb_mac_header_rebuild(skb);
+		skb_push(skb, skb->mac_len);
+
+		err = seg6_do_srh_encap(skb, tinfo->srh, NEXTHDR_NONE);
+		if (err)
+			return err;
+
+		skb->protocol = htons(ETH_P_IPV6);
+		break;
+	}
 
 	ipv6_hdr(skb)->payload_len = htons(skb->len - sizeof(struct ipv6hdr));
 	skb_set_transport_header(skb, sizeof(struct ipv6hdr));
@@ -336,6 +371,9 @@ static int seg6_build_state(struct nlattr *nla,
 	struct seg6_lwt *slwt;
 	int err;
 
+	if (family != AF_INET && family != AF_INET6)
+		return -EINVAL;
+
 	err = nla_parse_nested(tb, SEG6_IPTUNNEL_MAX, nla,
 			       seg6_iptunnel_policy, extack);
 
@@ -357,12 +395,15 @@ static int seg6_build_state(struct nlattr *nla,
 		return -EINVAL;
 
 	switch (tuninfo->mode) {
-#ifdef CONFIG_IPV6_SEG6_INLINE
 	case SEG6_IPTUN_MODE_INLINE:
+		if (family != AF_INET6)
+			return -EINVAL;
+
 		break;
-#endif
 	case SEG6_IPTUN_MODE_ENCAP:
 		break;
+	case SEG6_IPTUN_MODE_L2ENCAP:
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -386,8 +427,11 @@ static int seg6_build_state(struct nlattr *nla,
 	memcpy(&slwt->tuninfo, tuninfo, tuninfo_len);
 
 	newts->type = LWTUNNEL_ENCAP_SEG6;
-	newts->flags |= LWTUNNEL_STATE_OUTPUT_REDIRECT |
-			LWTUNNEL_STATE_INPUT_REDIRECT;
+	newts->flags |= LWTUNNEL_STATE_INPUT_REDIRECT;
+
+	if (tuninfo->mode != SEG6_IPTUN_MODE_L2ENCAP)
+		newts->flags |= LWTUNNEL_STATE_OUTPUT_REDIRECT;
+
 	newts->headroom = seg6_lwt_headroom(tuninfo);
 
 	*ts = newts;
diff --git a/net/ipv6/seg6_local.c b/net/ipv6/seg6_local.c
new file mode 100644
index 000000000000..7ff54db73a48
--- /dev/null
+++ b/net/ipv6/seg6_local.c
@@ -0,0 +1,938 @@
+/*
+ *  SR-IPv6 implementation
+ *
+ *  Author:
+ *  David Lebrun <david.lebrun@uclouvain.be>
+ *
+ *
+ *  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.
+ */
+
+#include <linux/types.h>
+#include <linux/skbuff.h>
+#include <linux/net.h>
+#include <linux/module.h>
+#include <net/ip.h>
+#include <net/lwtunnel.h>
+#include <net/netevent.h>
+#include <net/netns/generic.h>
+#include <net/ip6_fib.h>
+#include <net/route.h>
+#include <net/seg6.h>
+#include <linux/seg6.h>
+#include <linux/seg6_local.h>
+#include <net/addrconf.h>
+#include <net/ip6_route.h>
+#include <net/dst_cache.h>
+#ifdef CONFIG_IPV6_SEG6_HMAC
+#include <net/seg6_hmac.h>
+#endif
+#include <linux/etherdevice.h>
+
+struct seg6_local_lwt;
+
+struct seg6_action_desc {
+	int action;
+	unsigned long attrs;
+	int (*input)(struct sk_buff *skb, struct seg6_local_lwt *slwt);
+	int static_headroom;
+};
+
+struct seg6_local_lwt {
+	int action;
+	struct ipv6_sr_hdr *srh;
+	int table;
+	struct in_addr nh4;
+	struct in6_addr nh6;
+	int iif;
+	int oif;
+
+	int headroom;
+	struct seg6_action_desc *desc;
+};
+
+static struct seg6_local_lwt *seg6_local_lwtunnel(struct lwtunnel_state *lwt)
+{
+	return (struct seg6_local_lwt *)lwt->data;
+}
+
+static struct ipv6_sr_hdr *get_srh(struct sk_buff *skb)
+{
+	struct ipv6_sr_hdr *srh;
+	int len, srhoff = 0;
+
+	if (ipv6_find_hdr(skb, &srhoff, IPPROTO_ROUTING, NULL, NULL) < 0)
+		return NULL;
+
+	if (!pskb_may_pull(skb, srhoff + sizeof(*srh)))
+		return NULL;
+
+	srh = (struct ipv6_sr_hdr *)(skb->data + srhoff);
+
+	/* make sure it's a Segment Routing header (Routing Type 4) */
+	if (srh->type != IPV6_SRCRT_TYPE_4)
+		return NULL;
+
+	len = (srh->hdrlen + 1) << 3;
+
+	if (!pskb_may_pull(skb, srhoff + len))
+		return NULL;
+
+	if (!seg6_validate_srh(srh, len))
+		return NULL;
+
+	return srh;
+}
+
+static struct ipv6_sr_hdr *get_and_validate_srh(struct sk_buff *skb)
+{
+	struct ipv6_sr_hdr *srh;
+
+	srh = get_srh(skb);
+	if (!srh)
+		return NULL;
+
+	if (srh->segments_left == 0)
+		return NULL;
+
+#ifdef CONFIG_IPV6_SEG6_HMAC
+	if (!seg6_hmac_validate_skb(skb))
+		return NULL;
+#endif
+
+	return srh;
+}
+
+static bool decap_and_validate(struct sk_buff *skb, int proto)
+{
+	struct ipv6_sr_hdr *srh;
+	unsigned int off = 0;
+
+	srh = get_srh(skb);
+	if (srh && srh->segments_left > 0)
+		return false;
+
+#ifdef CONFIG_IPV6_SEG6_HMAC
+	if (srh && !seg6_hmac_validate_skb(skb))
+		return false;
+#endif
+
+	if (ipv6_find_hdr(skb, &off, proto, NULL, NULL) < 0)
+		return false;
+
+	if (!pskb_pull(skb, off))
+		return false;
+
+	skb_postpull_rcsum(skb, skb_network_header(skb), off);
+
+	skb_reset_network_header(skb);
+	skb_reset_transport_header(skb);
+	skb->encapsulation = 0;
+
+	return true;
+}
+
+static void advance_nextseg(struct ipv6_sr_hdr *srh, struct in6_addr *daddr)
+{
+	struct in6_addr *addr;
+
+	srh->segments_left--;
+	addr = srh->segments + srh->segments_left;
+	*daddr = *addr;
+}
+
+static void lookup_nexthop(struct sk_buff *skb, struct in6_addr *nhaddr,
+			   u32 tbl_id)
+{
+	struct net *net = dev_net(skb->dev);
+	struct ipv6hdr *hdr = ipv6_hdr(skb);
+	int flags = RT6_LOOKUP_F_HAS_SADDR;
+	struct dst_entry *dst = NULL;
+	struct rt6_info *rt;
+	struct flowi6 fl6;
+
+	fl6.flowi6_iif = skb->dev->ifindex;
+	fl6.daddr = nhaddr ? *nhaddr : hdr->daddr;
+	fl6.saddr = hdr->saddr;
+	fl6.flowlabel = ip6_flowinfo(hdr);
+	fl6.flowi6_mark = skb->mark;
+	fl6.flowi6_proto = hdr->nexthdr;
+
+	if (nhaddr)
+		fl6.flowi6_flags = FLOWI_FLAG_KNOWN_NH;
+
+	if (!tbl_id) {
+		dst = ip6_route_input_lookup(net, skb->dev, &fl6, flags);
+	} else {
+		struct fib6_table *table;
+
+		table = fib6_get_table(net, tbl_id);
+		if (!table)
+			goto out;
+
+		rt = ip6_pol_route(net, table, 0, &fl6, flags);
+		dst = &rt->dst;
+	}
+
+	if (dst && dst->dev->flags & IFF_LOOPBACK && !dst->error) {
+		dst_release(dst);
+		dst = NULL;
+	}
+
+out:
+	if (!dst) {
+		rt = net->ipv6.ip6_blk_hole_entry;
+		dst = &rt->dst;
+		dst_hold(dst);
+	}
+
+	skb_dst_drop(skb);
+	skb_dst_set(skb, dst);
+}
+
+/* regular endpoint function */
+static int input_action_end(struct sk_buff *skb, struct seg6_local_lwt *slwt)
+{
+	struct ipv6_sr_hdr *srh;
+
+	srh = get_and_validate_srh(skb);
+	if (!srh)
+		goto drop;
+
+	advance_nextseg(srh, &ipv6_hdr(skb)->daddr);
+
+	lookup_nexthop(skb, NULL, 0);
+
+	return dst_input(skb);
+
+drop:
+	kfree_skb(skb);
+	return -EINVAL;
+}
+
+/* regular endpoint, and forward to specified nexthop */
+static int input_action_end_x(struct sk_buff *skb, struct seg6_local_lwt *slwt)
+{
+	struct ipv6_sr_hdr *srh;
+
+	srh = get_and_validate_srh(skb);
+	if (!srh)
+		goto drop;
+
+	advance_nextseg(srh, &ipv6_hdr(skb)->daddr);
+
+	lookup_nexthop(skb, &slwt->nh6, 0);
+
+	return dst_input(skb);
+
+drop:
+	kfree_skb(skb);
+	return -EINVAL;
+}
+
+static int input_action_end_t(struct sk_buff *skb, struct seg6_local_lwt *slwt)
+{
+	struct ipv6_sr_hdr *srh;
+
+	srh = get_and_validate_srh(skb);
+	if (!srh)
+		goto drop;
+
+	advance_nextseg(srh, &ipv6_hdr(skb)->daddr);
+
+	lookup_nexthop(skb, NULL, slwt->table);
+
+	return dst_input(skb);
+
+drop:
+	kfree_skb(skb);
+	return -EINVAL;
+}
+
+/* decapsulate and forward inner L2 frame on specified interface */
+static int input_action_end_dx2(struct sk_buff *skb,
+				struct seg6_local_lwt *slwt)
+{
+	struct net *net = dev_net(skb->dev);
+	struct net_device *odev;
+	struct ethhdr *eth;
+
+	if (!decap_and_validate(skb, NEXTHDR_NONE))
+		goto drop;
+
+	if (!pskb_may_pull(skb, ETH_HLEN))
+		goto drop;
+
+	skb_reset_mac_header(skb);
+	eth = (struct ethhdr *)skb->data;
+
+	/* To determine the frame's protocol, we assume it is 802.3. This avoids
+	 * a call to eth_type_trans(), which is not really relevant for our
+	 * use case.
+	 */
+	if (!eth_proto_is_802_3(eth->h_proto))
+		goto drop;
+
+	odev = dev_get_by_index_rcu(net, slwt->oif);
+	if (!odev)
+		goto drop;
+
+	/* As we accept Ethernet frames, make sure the egress device is of
+	 * the correct type.
+	 */
+	if (odev->type != ARPHRD_ETHER)
+		goto drop;
+
+	if (!(odev->flags & IFF_UP) || !netif_carrier_ok(odev))
+		goto drop;
+
+	skb_orphan(skb);
+
+	if (skb_warn_if_lro(skb))
+		goto drop;
+
+	skb_forward_csum(skb);
+
+	if (skb->len - ETH_HLEN > odev->mtu)
+		goto drop;
+
+	skb->dev = odev;
+	skb->protocol = eth->h_proto;
+
+	return dev_queue_xmit(skb);
+
+drop:
+	kfree_skb(skb);
+	return -EINVAL;
+}
+
+/* decapsulate and forward to specified nexthop */
+static int input_action_end_dx6(struct sk_buff *skb,
+				struct seg6_local_lwt *slwt)
+{
+	struct in6_addr *nhaddr = NULL;
+
+	/* this function accepts IPv6 encapsulated packets, with either
+	 * an SRH with SL=0, or no SRH.
+	 */
+
+	if (!decap_and_validate(skb, IPPROTO_IPV6))
+		goto drop;
+
+	if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))
+		goto drop;
+
+	/* The inner packet is not associated to any local interface,
+	 * so we do not call netif_rx().
+	 *
+	 * If slwt->nh6 is set to ::, then lookup the nexthop for the
+	 * inner packet's DA. Otherwise, use the specified nexthop.
+	 */
+
+	if (!ipv6_addr_any(&slwt->nh6))
+		nhaddr = &slwt->nh6;
+
+	lookup_nexthop(skb, nhaddr, 0);
+
+	return dst_input(skb);
+drop:
+	kfree_skb(skb);
+	return -EINVAL;
+}
+
+static int input_action_end_dx4(struct sk_buff *skb,
+				struct seg6_local_lwt *slwt)
+{
+	struct iphdr *iph;
+	__be32 nhaddr;
+	int err;
+
+	if (!decap_and_validate(skb, IPPROTO_IPIP))
+		goto drop;
+
+	if (!pskb_may_pull(skb, sizeof(struct iphdr)))
+		goto drop;
+
+	skb->protocol = htons(ETH_P_IP);
+
+	iph = ip_hdr(skb);
+
+	nhaddr = slwt->nh4.s_addr ?: iph->daddr;
+
+	skb_dst_drop(skb);
+
+	err = ip_route_input(skb, nhaddr, iph->saddr, 0, skb->dev);
+	if (err)
+		goto drop;
+
+	return dst_input(skb);
+
+drop:
+	kfree_skb(skb);
+	return -EINVAL;
+}
+
+static int input_action_end_dt6(struct sk_buff *skb,
+				struct seg6_local_lwt *slwt)
+{
+	if (!decap_and_validate(skb, IPPROTO_IPV6))
+		goto drop;
+
+	if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))
+		goto drop;
+
+	lookup_nexthop(skb, NULL, slwt->table);
+
+	return dst_input(skb);
+
+drop:
+	kfree_skb(skb);
+	return -EINVAL;
+}
+
+/* push an SRH on top of the current one */
+static int input_action_end_b6(struct sk_buff *skb, struct seg6_local_lwt *slwt)
+{
+	struct ipv6_sr_hdr *srh;
+	int err = -EINVAL;
+
+	srh = get_and_validate_srh(skb);
+	if (!srh)
+		goto drop;
+
+	err = seg6_do_srh_inline(skb, slwt->srh);
+	if (err)
+		goto drop;
+
+	ipv6_hdr(skb)->payload_len = htons(skb->len - sizeof(struct ipv6hdr));
+	skb_set_transport_header(skb, sizeof(struct ipv6hdr));
+
+	lookup_nexthop(skb, NULL, 0);
+
+	return dst_input(skb);
+
+drop:
+	kfree_skb(skb);
+	return err;
+}
+
+/* encapsulate within an outer IPv6 header and a specified SRH */
+static int input_action_end_b6_encap(struct sk_buff *skb,
+				     struct seg6_local_lwt *slwt)
+{
+	struct ipv6_sr_hdr *srh;
+	int err = -EINVAL;
+
+	srh = get_and_validate_srh(skb);
+	if (!srh)
+		goto drop;
+
+	advance_nextseg(srh, &ipv6_hdr(skb)->daddr);
+
+	skb_reset_inner_headers(skb);
+	skb->encapsulation = 1;
+
+	err = seg6_do_srh_encap(skb, slwt->srh, IPPROTO_IPV6);
+	if (err)
+		goto drop;
+
+	ipv6_hdr(skb)->payload_len = htons(skb->len - sizeof(struct ipv6hdr));
+	skb_set_transport_header(skb, sizeof(struct ipv6hdr));
+
+	lookup_nexthop(skb, NULL, 0);
+
+	return dst_input(skb);
+
+drop:
+	kfree_skb(skb);
+	return err;
+}
+
+static struct seg6_action_desc seg6_action_table[] = {
+	{
+		.action		= SEG6_LOCAL_ACTION_END,
+		.attrs		= 0,
+		.input		= input_action_end,
+	},
+	{
+		.action		= SEG6_LOCAL_ACTION_END_X,
+		.attrs		= (1 << SEG6_LOCAL_NH6),
+		.input		= input_action_end_x,
+	},
+	{
+		.action		= SEG6_LOCAL_ACTION_END_T,
+		.attrs		= (1 << SEG6_LOCAL_TABLE),
+		.input		= input_action_end_t,
+	},
+	{
+		.action		= SEG6_LOCAL_ACTION_END_DX2,
+		.attrs		= (1 << SEG6_LOCAL_OIF),
+		.input		= input_action_end_dx2,
+	},
+	{
+		.action		= SEG6_LOCAL_ACTION_END_DX6,
+		.attrs		= (1 << SEG6_LOCAL_NH6),
+		.input		= input_action_end_dx6,
+	},
+	{
+		.action		= SEG6_LOCAL_ACTION_END_DX4,
+		.attrs		= (1 << SEG6_LOCAL_NH4),
+		.input		= input_action_end_dx4,
+	},
+	{
+		.action		= SEG6_LOCAL_ACTION_END_DT6,
+		.attrs		= (1 << SEG6_LOCAL_TABLE),
+		.input		= input_action_end_dt6,
+	},
+	{
+		.action		= SEG6_LOCAL_ACTION_END_B6,
+		.attrs		= (1 << SEG6_LOCAL_SRH),
+		.input		= input_action_end_b6,
+	},
+	{
+		.action		= SEG6_LOCAL_ACTION_END_B6_ENCAP,
+		.attrs		= (1 << SEG6_LOCAL_SRH),
+		.input		= input_action_end_b6_encap,
+		.static_headroom	= sizeof(struct ipv6hdr),
+	}
+};
+
+static struct seg6_action_desc *__get_action_desc(int action)
+{
+	struct seg6_action_desc *desc;
+	int i, count;
+
+	count = sizeof(seg6_action_table) / sizeof(struct seg6_action_desc);
+	for (i = 0; i < count; i++) {
+		desc = &seg6_action_table[i];
+		if (desc->action == action)
+			return desc;
+	}
+
+	return NULL;
+}
+
+static int seg6_local_input(struct sk_buff *skb)
+{
+	struct dst_entry *orig_dst = skb_dst(skb);
+	struct seg6_action_desc *desc;
+	struct seg6_local_lwt *slwt;
+
+	if (skb->protocol != htons(ETH_P_IPV6)) {
+		kfree_skb(skb);
+		return -EINVAL;
+	}
+
+	slwt = seg6_local_lwtunnel(orig_dst->lwtstate);
+	desc = slwt->desc;
+
+	return desc->input(skb, slwt);
+}
+
+static const struct nla_policy seg6_local_policy[SEG6_LOCAL_MAX + 1] = {
+	[SEG6_LOCAL_ACTION]	= { .type = NLA_U32 },
+	[SEG6_LOCAL_SRH]	= { .type = NLA_BINARY },
+	[SEG6_LOCAL_TABLE]	= { .type = NLA_U32 },
+	[SEG6_LOCAL_NH4]	= { .type = NLA_BINARY,
+				    .len = sizeof(struct in_addr) },
+	[SEG6_LOCAL_NH6]	= { .type = NLA_BINARY,
+				    .len = sizeof(struct in6_addr) },
+	[SEG6_LOCAL_IIF]	= { .type = NLA_U32 },
+	[SEG6_LOCAL_OIF]	= { .type = NLA_U32 },
+};
+
+static int parse_nla_srh(struct nlattr **attrs, struct seg6_local_lwt *slwt)
+{
+	struct ipv6_sr_hdr *srh;
+	int len;
+
+	srh = nla_data(attrs[SEG6_LOCAL_SRH]);
+	len = nla_len(attrs[SEG6_LOCAL_SRH]);
+
+	/* SRH must contain at least one segment */
+	if (len < sizeof(*srh) + sizeof(struct in6_addr))
+		return -EINVAL;
+
+	if (!seg6_validate_srh(srh, len))
+		return -EINVAL;
+
+	slwt->srh = kmalloc(len, GFP_KERNEL);
+	if (!slwt->srh)
+		return -ENOMEM;
+
+	memcpy(slwt->srh, srh, len);
+
+	slwt->headroom += len;
+
+	return 0;
+}
+
+static int put_nla_srh(struct sk_buff *skb, struct seg6_local_lwt *slwt)
+{
+	struct ipv6_sr_hdr *srh;
+	struct nlattr *nla;
+	int len;
+
+	srh = slwt->srh;
+	len = (srh->hdrlen + 1) << 3;
+
+	nla = nla_reserve(skb, SEG6_LOCAL_SRH, len);
+	if (!nla)
+		return -EMSGSIZE;
+
+	memcpy(nla_data(nla), srh, len);
+
+	return 0;
+}
+
+static int cmp_nla_srh(struct seg6_local_lwt *a, struct seg6_local_lwt *b)
+{
+	int len = (a->srh->hdrlen + 1) << 3;
+
+	if (len != ((b->srh->hdrlen + 1) << 3))
+		return 1;
+
+	return memcmp(a->srh, b->srh, len);
+}
+
+static int parse_nla_table(struct nlattr **attrs, struct seg6_local_lwt *slwt)
+{
+	slwt->table = nla_get_u32(attrs[SEG6_LOCAL_TABLE]);
+
+	return 0;
+}
+
+static int put_nla_table(struct sk_buff *skb, struct seg6_local_lwt *slwt)
+{
+	if (nla_put_u32(skb, SEG6_LOCAL_TABLE, slwt->table))
+		return -EMSGSIZE;
+
+	return 0;
+}
+
+static int cmp_nla_table(struct seg6_local_lwt *a, struct seg6_local_lwt *b)
+{
+	if (a->table != b->table)
+		return 1;
+
+	return 0;
+}
+
+static int parse_nla_nh4(struct nlattr **attrs, struct seg6_local_lwt *slwt)
+{
+	memcpy(&slwt->nh4, nla_data(attrs[SEG6_LOCAL_NH4]),
+	       sizeof(struct in_addr));
+
+	return 0;
+}
+
+static int put_nla_nh4(struct sk_buff *skb, struct seg6_local_lwt *slwt)
+{
+	struct nlattr *nla;
+
+	nla = nla_reserve(skb, SEG6_LOCAL_NH4, sizeof(struct in_addr));
+	if (!nla)
+		return -EMSGSIZE;
+
+	memcpy(nla_data(nla), &slwt->nh4, sizeof(struct in_addr));
+
+	return 0;
+}
+
+static int cmp_nla_nh4(struct seg6_local_lwt *a, struct seg6_local_lwt *b)
+{
+	return memcmp(&a->nh4, &b->nh4, sizeof(struct in_addr));
+}
+
+static int parse_nla_nh6(struct nlattr **attrs, struct seg6_local_lwt *slwt)
+{
+	memcpy(&slwt->nh6, nla_data(attrs[SEG6_LOCAL_NH6]),
+	       sizeof(struct in6_addr));
+
+	return 0;
+}
+
+static int put_nla_nh6(struct sk_buff *skb, struct seg6_local_lwt *slwt)
+{
+	struct nlattr *nla;
+
+	nla = nla_reserve(skb, SEG6_LOCAL_NH6, sizeof(struct in6_addr));
+	if (!nla)
+		return -EMSGSIZE;
+
+	memcpy(nla_data(nla), &slwt->nh6, sizeof(struct in6_addr));
+
+	return 0;
+}
+
+static int cmp_nla_nh6(struct seg6_local_lwt *a, struct seg6_local_lwt *b)
+{
+	return memcmp(&a->nh6, &b->nh6, sizeof(struct in6_addr));
+}
+
+static int parse_nla_iif(struct nlattr **attrs, struct seg6_local_lwt *slwt)
+{
+	slwt->iif = nla_get_u32(attrs[SEG6_LOCAL_IIF]);
+
+	return 0;
+}
+
+static int put_nla_iif(struct sk_buff *skb, struct seg6_local_lwt *slwt)
+{
+	if (nla_put_u32(skb, SEG6_LOCAL_IIF, slwt->iif))
+		return -EMSGSIZE;
+
+	return 0;
+}
+
+static int cmp_nla_iif(struct seg6_local_lwt *a, struct seg6_local_lwt *b)
+{
+	if (a->iif != b->iif)
+		return 1;
+
+	return 0;
+}
+
+static int parse_nla_oif(struct nlattr **attrs, struct seg6_local_lwt *slwt)
+{
+	slwt->oif = nla_get_u32(attrs[SEG6_LOCAL_OIF]);
+
+	return 0;
+}
+
+static int put_nla_oif(struct sk_buff *skb, struct seg6_local_lwt *slwt)
+{
+	if (nla_put_u32(skb, SEG6_LOCAL_OIF, slwt->oif))
+		return -EMSGSIZE;
+
+	return 0;
+}
+
+static int cmp_nla_oif(struct seg6_local_lwt *a, struct seg6_local_lwt *b)
+{
+	if (a->oif != b->oif)
+		return 1;
+
+	return 0;
+}
+
+struct seg6_action_param {
+	int (*parse)(struct nlattr **attrs, struct seg6_local_lwt *slwt);
+	int (*put)(struct sk_buff *skb, struct seg6_local_lwt *slwt);
+	int (*cmp)(struct seg6_local_lwt *a, struct seg6_local_lwt *b);
+};
+
+static struct seg6_action_param seg6_action_params[SEG6_LOCAL_MAX + 1] = {
+	[SEG6_LOCAL_SRH]	= { .parse = parse_nla_srh,
+				    .put = put_nla_srh,
+				    .cmp = cmp_nla_srh },
+
+	[SEG6_LOCAL_TABLE]	= { .parse = parse_nla_table,
+				    .put = put_nla_table,
+				    .cmp = cmp_nla_table },
+
+	[SEG6_LOCAL_NH4]	= { .parse = parse_nla_nh4,
+				    .put = put_nla_nh4,
+				    .cmp = cmp_nla_nh4 },
+
+	[SEG6_LOCAL_NH6]	= { .parse = parse_nla_nh6,
+				    .put = put_nla_nh6,
+				    .cmp = cmp_nla_nh6 },
+
+	[SEG6_LOCAL_IIF]	= { .parse = parse_nla_iif,
+				    .put = put_nla_iif,
+				    .cmp = cmp_nla_iif },
+
+	[SEG6_LOCAL_OIF]	= { .parse = parse_nla_oif,
+				    .put = put_nla_oif,
+				    .cmp = cmp_nla_oif },
+};
+
+static int parse_nla_action(struct nlattr **attrs, struct seg6_local_lwt *slwt)
+{
+	struct seg6_action_param *param;
+	struct seg6_action_desc *desc;
+	int i, err;
+
+	desc = __get_action_desc(slwt->action);
+	if (!desc)
+		return -EINVAL;
+
+	if (!desc->input)
+		return -EOPNOTSUPP;
+
+	slwt->desc = desc;
+	slwt->headroom += desc->static_headroom;
+
+	for (i = 0; i < SEG6_LOCAL_MAX + 1; i++) {
+		if (desc->attrs & (1 << i)) {
+			if (!attrs[i])
+				return -EINVAL;
+
+			param = &seg6_action_params[i];
+
+			err = param->parse(attrs, slwt);
+			if (err < 0)
+				return err;
+		}
+	}
+
+	return 0;
+}
+
+static int seg6_local_build_state(struct nlattr *nla, unsigned int family,
+				  const void *cfg, struct lwtunnel_state **ts,
+				  struct netlink_ext_ack *extack)
+{
+	struct nlattr *tb[SEG6_LOCAL_MAX + 1];
+	struct lwtunnel_state *newts;
+	struct seg6_local_lwt *slwt;
+	int err;
+
+	if (family != AF_INET6)
+		return -EINVAL;
+
+	err = nla_parse_nested(tb, SEG6_LOCAL_MAX, nla, seg6_local_policy,
+			       extack);
+
+	if (err < 0)
+		return err;
+
+	if (!tb[SEG6_LOCAL_ACTION])
+		return -EINVAL;
+
+	newts = lwtunnel_state_alloc(sizeof(*slwt));
+	if (!newts)
+		return -ENOMEM;
+
+	slwt = seg6_local_lwtunnel(newts);
+	slwt->action = nla_get_u32(tb[SEG6_LOCAL_ACTION]);
+
+	err = parse_nla_action(tb, slwt);
+	if (err < 0)
+		goto out_free;
+
+	newts->type = LWTUNNEL_ENCAP_SEG6_LOCAL;
+	newts->flags = LWTUNNEL_STATE_INPUT_REDIRECT;
+	newts->headroom = slwt->headroom;
+
+	*ts = newts;
+
+	return 0;
+
+out_free:
+	kfree(slwt->srh);
+	kfree(newts);
+	return err;
+}
+
+static void seg6_local_destroy_state(struct lwtunnel_state *lwt)
+{
+	struct seg6_local_lwt *slwt = seg6_local_lwtunnel(lwt);
+
+	kfree(slwt->srh);
+}
+
+static int seg6_local_fill_encap(struct sk_buff *skb,
+				 struct lwtunnel_state *lwt)
+{
+	struct seg6_local_lwt *slwt = seg6_local_lwtunnel(lwt);
+	struct seg6_action_param *param;
+	int i, err;
+
+	if (nla_put_u32(skb, SEG6_LOCAL_ACTION, slwt->action))
+		return -EMSGSIZE;
+
+	for (i = 0; i < SEG6_LOCAL_MAX + 1; i++) {
+		if (slwt->desc->attrs & (1 << i)) {
+			param = &seg6_action_params[i];
+			err = param->put(skb, slwt);
+			if (err < 0)
+				return err;
+		}
+	}
+
+	return 0;
+}
+
+static int seg6_local_get_encap_size(struct lwtunnel_state *lwt)
+{
+	struct seg6_local_lwt *slwt = seg6_local_lwtunnel(lwt);
+	unsigned long attrs;
+	int nlsize;
+
+	nlsize = nla_total_size(4); /* action */
+
+	attrs = slwt->desc->attrs;
+
+	if (attrs & (1 << SEG6_LOCAL_SRH))
+		nlsize += nla_total_size((slwt->srh->hdrlen + 1) << 3);
+
+	if (attrs & (1 << SEG6_LOCAL_TABLE))
+		nlsize += nla_total_size(4);
+
+	if (attrs & (1 << SEG6_LOCAL_NH4))
+		nlsize += nla_total_size(4);
+
+	if (attrs & (1 << SEG6_LOCAL_NH6))
+		nlsize += nla_total_size(16);
+
+	if (attrs & (1 << SEG6_LOCAL_IIF))
+		nlsize += nla_total_size(4);
+
+	if (attrs & (1 << SEG6_LOCAL_OIF))
+		nlsize += nla_total_size(4);
+
+	return nlsize;
+}
+
+static int seg6_local_cmp_encap(struct lwtunnel_state *a,
+				struct lwtunnel_state *b)
+{
+	struct seg6_local_lwt *slwt_a, *slwt_b;
+	struct seg6_action_param *param;
+	int i;
+
+	slwt_a = seg6_local_lwtunnel(a);
+	slwt_b = seg6_local_lwtunnel(b);
+
+	if (slwt_a->action != slwt_b->action)
+		return 1;
+
+	if (slwt_a->desc->attrs != slwt_b->desc->attrs)
+		return 1;
+
+	for (i = 0; i < SEG6_LOCAL_MAX + 1; i++) {
+		if (slwt_a->desc->attrs & (1 << i)) {
+			param = &seg6_action_params[i];
+			if (param->cmp(slwt_a, slwt_b))
+				return 1;
+		}
+	}
+
+	return 0;
+}
+
+static const struct lwtunnel_encap_ops seg6_local_ops = {
+	.build_state	= seg6_local_build_state,
+	.destroy_state	= seg6_local_destroy_state,
+	.input		= seg6_local_input,
+	.fill_encap	= seg6_local_fill_encap,
+	.get_encap_size	= seg6_local_get_encap_size,
+	.cmp_encap	= seg6_local_cmp_encap,
+	.owner		= THIS_MODULE,
+};
+
+int __init seg6_local_init(void)
+{
+	return lwtunnel_encap_add_ops(&seg6_local_ops,
+				      LWTUNNEL_ENCAP_SEG6_LOCAL);
+}
+
+void seg6_local_exit(void)
+{
+	lwtunnel_encap_del_ops(&seg6_local_ops, LWTUNNEL_ENCAP_SEG6_LOCAL);
+}
diff --git a/net/ipv6/sysctl_net_ipv6.c b/net/ipv6/sysctl_net_ipv6.c
index 69c50e737c54..6fbf8ae5e52c 100644
--- a/net/ipv6/sysctl_net_ipv6.c
+++ b/net/ipv6/sysctl_net_ipv6.c
@@ -90,6 +90,13 @@ static struct ctl_table ipv6_table_template[] = {
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec
 	},
+	{
+		.procname	= "flowlabel_reflect",
+		.data		= &init_net.ipv6.sysctl.flowlabel_reflect,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
 	{ }
 };
 
@@ -149,6 +156,7 @@ static int __net_init ipv6_sysctl_net_init(struct net *net)
 	ipv6_table[6].data = &net->ipv6.sysctl.idgen_delay;
 	ipv6_table[7].data = &net->ipv6.sysctl.flowlabel_state_ranges;
 	ipv6_table[8].data = &net->ipv6.sysctl.ip_nonlocal_bind;
+	ipv6_table[9].data = &net->ipv6.sysctl.flowlabel_reflect;
 
 	ipv6_route_table = ipv6_route_sysctl_init(net);
 	if (!ipv6_route_table)
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 206210125fd7..38f76d8b231e 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -350,7 +350,7 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 	sk = __inet6_lookup_established(net, &tcp_hashinfo,
 					&hdr->daddr, th->dest,
 					&hdr->saddr, ntohs(th->source),
-					skb->dev->ifindex);
+					skb->dev->ifindex, inet6_sdif(skb));
 
 	if (!sk) {
 		__ICMP6_INC_STATS(net, __in6_dev_get(skb->dev),
@@ -918,7 +918,8 @@ static void tcp_v6_send_reset(const struct sock *sk, struct sk_buff *skb)
 					   &tcp_hashinfo, NULL, 0,
 					   &ipv6h->saddr,
 					   th->source, &ipv6h->daddr,
-					   ntohs(th->source), tcp_v6_iif(skb));
+					   ntohs(th->source), tcp_v6_iif(skb),
+					   tcp_v6_sdif(skb));
 		if (!sk1)
 			goto out;
 
@@ -1296,7 +1297,7 @@ static int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb)
 			}
 		}
 
-		tcp_rcv_established(sk, skb, tcp_hdr(skb), skb->len);
+		tcp_rcv_established(sk, skb, tcp_hdr(skb));
 		if (opt_skb)
 			goto ipv6_pktoptions;
 		return 0;
@@ -1393,10 +1394,13 @@ static void tcp_v6_fill_cb(struct sk_buff *skb, const struct ipv6hdr *hdr,
 	TCP_SKB_CB(skb)->tcp_tw_isn = 0;
 	TCP_SKB_CB(skb)->ip_dsfield = ipv6_get_dsfield(hdr);
 	TCP_SKB_CB(skb)->sacked = 0;
+	TCP_SKB_CB(skb)->has_rxtstamp =
+			skb->tstamp || skb_hwtstamps(skb)->hwtstamp;
 }
 
 static int tcp_v6_rcv(struct sk_buff *skb)
 {
+	int sdif = inet6_sdif(skb);
 	const struct tcphdr *th;
 	const struct ipv6hdr *hdr;
 	bool refcounted;
@@ -1430,7 +1434,7 @@ static int tcp_v6_rcv(struct sk_buff *skb)
 
 lookup:
 	sk = __inet6_lookup_skb(&tcp_hashinfo, skb, __tcp_hdrlen(th),
-				th->source, th->dest, inet6_iif(skb),
+				th->source, th->dest, inet6_iif(skb), sdif,
 				&refcounted);
 	if (!sk)
 		goto no_tcp_socket;
@@ -1505,8 +1509,7 @@ process:
 	tcp_segs_in(tcp_sk(sk), skb);
 	ret = 0;
 	if (!sock_owned_by_user(sk)) {
-		if (!tcp_prequeue(sk, skb))
-			ret = tcp_v6_do_rcv(sk, skb);
+		ret = tcp_v6_do_rcv(sk, skb);
 	} else if (tcp_add_backlog(sk, skb)) {
 		goto discard_and_relse;
 	}
@@ -1564,7 +1567,8 @@ do_time_wait:
 					    skb, __tcp_hdrlen(th),
 					    &ipv6_hdr(skb)->saddr, th->source,
 					    &ipv6_hdr(skb)->daddr,
-					    ntohs(th->dest), tcp_v6_iif(skb));
+					    ntohs(th->dest), tcp_v6_iif(skb),
+					    sdif);
 		if (sk2) {
 			struct inet_timewait_sock *tw = inet_twsk(sk);
 			inet_twsk_deschedule_put(tw);
@@ -1611,7 +1615,7 @@ static void tcp_v6_early_demux(struct sk_buff *skb)
 	sk = __inet6_lookup_established(dev_net(skb->dev), &tcp_hashinfo,
 					&hdr->saddr, th->source,
 					&hdr->daddr, ntohs(th->dest),
-					inet6_iif(skb));
+					inet6_iif(skb), inet6_sdif(skb));
 	if (sk) {
 		skb->sk = sk;
 		skb->destructor = sock_edemux;
@@ -1945,6 +1949,9 @@ struct proto tcpv6_prot = {
 	.diag_destroy		= tcp_abort,
 };
 
+/* thinking of making this const? Don't.
+ * early_demux can change based on sysctl.
+ */
 static struct inet6_protocol tcpv6_protocol = {
 	.early_demux	=	tcp_v6_early_demux,
 	.early_demux_handler =  tcp_v6_early_demux,
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 56030d45823a..e2ecfb137297 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -129,7 +129,7 @@ static void udp_v6_rehash(struct sock *sk)
 static int compute_score(struct sock *sk, struct net *net,
 			 const struct in6_addr *saddr, __be16 sport,
 			 const struct in6_addr *daddr, unsigned short hnum,
-			 int dif, bool exact_dif)
+			 int dif, int sdif, bool exact_dif)
 {
 	int score;
 	struct inet_sock *inet;
@@ -161,9 +161,13 @@ static int compute_score(struct sock *sk, struct net *net,
 	}
 
 	if (sk->sk_bound_dev_if || exact_dif) {
-		if (sk->sk_bound_dev_if != dif)
+		bool dev_match = (sk->sk_bound_dev_if == dif ||
+				  sk->sk_bound_dev_if == sdif);
+
+		if (exact_dif && !dev_match)
 			return -1;
-		score++;
+		if (sk->sk_bound_dev_if && dev_match)
+			score++;
 	}
 
 	if (sk->sk_incoming_cpu == raw_smp_processor_id())
@@ -175,9 +179,9 @@ static int compute_score(struct sock *sk, struct net *net,
 /* called with rcu_read_lock() */
 static struct sock *udp6_lib_lookup2(struct net *net,
 		const struct in6_addr *saddr, __be16 sport,
-		const struct in6_addr *daddr, unsigned int hnum, int dif,
-		bool exact_dif, struct udp_hslot *hslot2,
-		struct sk_buff *skb)
+		const struct in6_addr *daddr, unsigned int hnum,
+		int dif, int sdif, bool exact_dif,
+		struct udp_hslot *hslot2, struct sk_buff *skb)
 {
 	struct sock *sk, *result;
 	int score, badness, matches = 0, reuseport = 0;
@@ -187,7 +191,7 @@ static struct sock *udp6_lib_lookup2(struct net *net,
 	badness = -1;
 	udp_portaddr_for_each_entry_rcu(sk, &hslot2->head) {
 		score = compute_score(sk, net, saddr, sport,
-				      daddr, hnum, dif, exact_dif);
+				      daddr, hnum, dif, sdif, exact_dif);
 		if (score > badness) {
 			reuseport = sk->sk_reuseport;
 			if (reuseport) {
@@ -214,10 +218,10 @@ static struct sock *udp6_lib_lookup2(struct net *net,
 
 /* rcu_read_lock() must be held */
 struct sock *__udp6_lib_lookup(struct net *net,
-				      const struct in6_addr *saddr, __be16 sport,
-				      const struct in6_addr *daddr, __be16 dport,
-				      int dif, struct udp_table *udptable,
-				      struct sk_buff *skb)
+			       const struct in6_addr *saddr, __be16 sport,
+			       const struct in6_addr *daddr, __be16 dport,
+			       int dif, int sdif, struct udp_table *udptable,
+			       struct sk_buff *skb)
 {
 	struct sock *sk, *result;
 	unsigned short hnum = ntohs(dport);
@@ -235,7 +239,7 @@ struct sock *__udp6_lib_lookup(struct net *net,
 			goto begin;
 
 		result = udp6_lib_lookup2(net, saddr, sport,
-					  daddr, hnum, dif, exact_dif,
+					  daddr, hnum, dif, sdif, exact_dif,
 					  hslot2, skb);
 		if (!result) {
 			unsigned int old_slot2 = slot2;
@@ -250,7 +254,7 @@ struct sock *__udp6_lib_lookup(struct net *net,
 				goto begin;
 
 			result = udp6_lib_lookup2(net, saddr, sport,
-						  daddr, hnum, dif,
+						  daddr, hnum, dif, sdif,
 						  exact_dif, hslot2,
 						  skb);
 		}
@@ -261,7 +265,7 @@ begin:
 	badness = -1;
 	sk_for_each_rcu(sk, &hslot->head) {
 		score = compute_score(sk, net, saddr, sport, daddr, hnum, dif,
-				      exact_dif);
+				      sdif, exact_dif);
 		if (score > badness) {
 			reuseport = sk->sk_reuseport;
 			if (reuseport) {
@@ -294,7 +298,7 @@ static struct sock *__udp6_lib_lookup_skb(struct sk_buff *skb,
 
 	return __udp6_lib_lookup(dev_net(skb->dev), &iph->saddr, sport,
 				 &iph->daddr, dport, inet6_iif(skb),
-				 udptable, skb);
+				 inet6_sdif(skb), udptable, skb);
 }
 
 struct sock *udp6_lib_lookup_skb(struct sk_buff *skb,
@@ -304,7 +308,7 @@ struct sock *udp6_lib_lookup_skb(struct sk_buff *skb,
 
 	return __udp6_lib_lookup(dev_net(skb->dev), &iph->saddr, sport,
 				 &iph->daddr, dport, inet6_iif(skb),
-				 &udp_table, skb);
+				 inet6_sdif(skb), &udp_table, skb);
 }
 EXPORT_SYMBOL_GPL(udp6_lib_lookup_skb);
 
@@ -320,7 +324,7 @@ struct sock *udp6_lib_lookup(struct net *net, const struct in6_addr *saddr, __be
 	struct sock *sk;
 
 	sk =  __udp6_lib_lookup(net, saddr, sport, daddr, dport,
-				dif, &udp_table, NULL);
+				dif, 0, &udp_table, NULL);
 	if (sk && !refcount_inc_not_zero(&sk->sk_refcnt))
 		sk = NULL;
 	return sk;
@@ -502,7 +506,7 @@ void __udp6_lib_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 	struct net *net = dev_net(skb->dev);
 
 	sk = __udp6_lib_lookup(net, daddr, uh->dest, saddr, uh->source,
-			       inet6_iif(skb), udptable, skb);
+			       inet6_iif(skb), 0, udptable, skb);
 	if (!sk) {
 		__ICMP6_INC_STATS(net, __in6_dev_get(skb->dev),
 				  ICMP6_MIB_INERRORS);
@@ -902,7 +906,7 @@ discard:
 static struct sock *__udp6_lib_demux_lookup(struct net *net,
 			__be16 loc_port, const struct in6_addr *loc_addr,
 			__be16 rmt_port, const struct in6_addr *rmt_addr,
-			int dif)
+			int dif, int sdif)
 {
 	unsigned short hnum = ntohs(loc_port);
 	unsigned int hash2 = udp6_portaddr_hash(net, loc_addr, hnum);
@@ -913,7 +917,7 @@ static struct sock *__udp6_lib_demux_lookup(struct net *net,
 
 	udp_portaddr_for_each_entry_rcu(sk, &hslot2->head) {
 		if (sk->sk_state == TCP_ESTABLISHED &&
-		    INET6_MATCH(sk, net, rmt_addr, loc_addr, ports, dif))
+		    INET6_MATCH(sk, net, rmt_addr, loc_addr, ports, dif, sdif))
 			return sk;
 		/* Only check first socket in chain */
 		break;
@@ -928,6 +932,7 @@ static void udp_v6_early_demux(struct sk_buff *skb)
 	struct sock *sk;
 	struct dst_entry *dst;
 	int dif = skb->dev->ifindex;
+	int sdif = inet6_sdif(skb);
 
 	if (!pskb_may_pull(skb, skb_transport_offset(skb) +
 	    sizeof(struct udphdr)))
@@ -939,7 +944,7 @@ static void udp_v6_early_demux(struct sk_buff *skb)
 		sk = __udp6_lib_demux_lookup(net, uh->dest,
 					     &ipv6_hdr(skb)->daddr,
 					     uh->source, &ipv6_hdr(skb)->saddr,
-					     dif);
+					     dif, sdif);
 	else
 		return;
 
@@ -1475,6 +1480,9 @@ int compat_udpv6_getsockopt(struct sock *sk, int level, int optname,
 }
 #endif
 
+/* thinking of making this const? Don't.
+ * early_demux can change based on sysctl.
+ */
 static struct inet6_protocol udpv6_protocol = {
 	.early_demux	=	udp_v6_early_demux,
 	.early_demux_handler =  udp_v6_early_demux,
diff --git a/net/ipv6/udp_offload.c b/net/ipv6/udp_offload.c
index e7d378c032cb..455fd4e39333 100644
--- a/net/ipv6/udp_offload.c
+++ b/net/ipv6/udp_offload.c
@@ -17,109 +17,15 @@
 #include <net/ip6_checksum.h>
 #include "ip6_offload.h"
 
-static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb,
-					 netdev_features_t features)
+static struct sk_buff *udp6_tunnel_segment(struct sk_buff *skb,
+					   netdev_features_t features)
 {
 	struct sk_buff *segs = ERR_PTR(-EINVAL);
-	unsigned int mss;
-	unsigned int unfrag_ip6hlen, unfrag_len;
-	struct frag_hdr *fptr;
-	u8 *packet_start, *prevhdr;
-	u8 nexthdr;
-	u8 frag_hdr_sz = sizeof(struct frag_hdr);
-	__wsum csum;
-	int tnl_hlen;
-	int err;
-
-	mss = skb_shinfo(skb)->gso_size;
-	if (unlikely(skb->len <= mss))
-		goto out;
-
-	if (skb_gso_ok(skb, features | NETIF_F_GSO_ROBUST)) {
-		/* Packet is from an untrusted source, reset gso_segs. */
-
-		skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(skb->len, mss);
-
-		/* Set the IPv6 fragment id if not set yet */
-		if (!skb_shinfo(skb)->ip6_frag_id)
-			ipv6_proxy_select_ident(dev_net(skb->dev), skb);
-
-		segs = NULL;
-		goto out;
-	}
 
 	if (skb->encapsulation && skb_shinfo(skb)->gso_type &
 	    (SKB_GSO_UDP_TUNNEL|SKB_GSO_UDP_TUNNEL_CSUM))
 		segs = skb_udp_tunnel_segment(skb, features, true);
-	else {
-		const struct ipv6hdr *ipv6h;
-		struct udphdr *uh;
-
-		if (!pskb_may_pull(skb, sizeof(struct udphdr)))
-			goto out;
-
-		/* Do software UFO. Complete and fill in the UDP checksum as HW cannot
-		 * do checksum of UDP packets sent as multiple IP fragments.
-		 */
-
-		uh = udp_hdr(skb);
-		ipv6h = ipv6_hdr(skb);
-
-		uh->check = 0;
-		csum = skb_checksum(skb, 0, skb->len, 0);
-		uh->check = udp_v6_check(skb->len, &ipv6h->saddr,
-					  &ipv6h->daddr, csum);
-		if (uh->check == 0)
-			uh->check = CSUM_MANGLED_0;
-
-		skb->ip_summed = CHECKSUM_UNNECESSARY;
-
-		/* If there is no outer header we can fake a checksum offload
-		 * due to the fact that we have already done the checksum in
-		 * software prior to segmenting the frame.
-		 */
-		if (!skb->encap_hdr_csum)
-			features |= NETIF_F_HW_CSUM;
-
-		/* Check if there is enough headroom to insert fragment header. */
-		tnl_hlen = skb_tnl_header_len(skb);
-		if (skb->mac_header < (tnl_hlen + frag_hdr_sz)) {
-			if (gso_pskb_expand_head(skb, tnl_hlen + frag_hdr_sz))
-				goto out;
-		}
-
-		/* Find the unfragmentable header and shift it left by frag_hdr_sz
-		 * bytes to insert fragment header.
-		 */
-		err = ip6_find_1stfragopt(skb, &prevhdr);
-		if (err < 0)
-			return ERR_PTR(err);
-		unfrag_ip6hlen = err;
-		nexthdr = *prevhdr;
-		*prevhdr = NEXTHDR_FRAGMENT;
-		unfrag_len = (skb_network_header(skb) - skb_mac_header(skb)) +
-			     unfrag_ip6hlen + tnl_hlen;
-		packet_start = (u8 *) skb->head + SKB_GSO_CB(skb)->mac_offset;
-		memmove(packet_start-frag_hdr_sz, packet_start, unfrag_len);
-
-		SKB_GSO_CB(skb)->mac_offset -= frag_hdr_sz;
-		skb->mac_header -= frag_hdr_sz;
-		skb->network_header -= frag_hdr_sz;
-
-		fptr = (struct frag_hdr *)(skb_network_header(skb) + unfrag_ip6hlen);
-		fptr->nexthdr = nexthdr;
-		fptr->reserved = 0;
-		if (!skb_shinfo(skb)->ip6_frag_id)
-			ipv6_proxy_select_ident(dev_net(skb->dev), skb);
-		fptr->identification = skb_shinfo(skb)->ip6_frag_id;
-
-		/* Fragment the skb. ipv6 header and the remaining fields of the
-		 * fragment header are updated in ipv6_gso_segment()
-		 */
-		segs = skb_segment(skb, features);
-	}
 
-out:
 	return segs;
 }
 
@@ -169,7 +75,7 @@ static int udp6_gro_complete(struct sk_buff *skb, int nhoff)
 
 static const struct net_offload udpv6_offload = {
 	.callbacks = {
-		.gso_segment	=	udp6_ufo_fragment,
+		.gso_segment	=	udp6_tunnel_segment,
 		.gro_receive	=	udp6_gro_receive,
 		.gro_complete	=	udp6_gro_complete,
 	},
diff --git a/net/ipv6/xfrm6_input.c b/net/ipv6/xfrm6_input.c
index 3ef5d913e7a3..f95943a13abc 100644
--- a/net/ipv6/xfrm6_input.c
+++ b/net/ipv6/xfrm6_input.c
@@ -34,6 +34,7 @@ EXPORT_SYMBOL(xfrm6_rcv_spi);
 int xfrm6_transport_finish(struct sk_buff *skb, int async)
 {
 	struct xfrm_offload *xo = xfrm_offload(skb);
+	int nhlen = skb->data - skb_network_header(skb);
 
 	skb_network_header(skb)[IP6CB(skb)->nhoff] =
 		XFRM_MODE_SKB_CB(skb)->protocol;
@@ -43,8 +44,9 @@ int xfrm6_transport_finish(struct sk_buff *skb, int async)
 		return 1;
 #endif
 
-	__skb_push(skb, skb->data - skb_network_header(skb));
+	__skb_push(skb, nhlen);
 	ipv6_hdr(skb)->payload_len = htons(skb->len - sizeof(struct ipv6hdr));
+	skb_postpush_rcsum(skb, skb_network_header(skb), nhlen);
 
 	if (xo && (xo->flags & XFRM_GRO)) {
 		skb_mac_header_rebuild(skb);
diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
index 79651bc71bf0..11d1314ab6c5 100644
--- a/net/ipv6/xfrm6_policy.c
+++ b/net/ipv6/xfrm6_policy.c
@@ -27,7 +27,8 @@
 
 static struct dst_entry *xfrm6_dst_lookup(struct net *net, int tos, int oif,
 					  const xfrm_address_t *saddr,
-					  const xfrm_address_t *daddr)
+					  const xfrm_address_t *daddr,
+					  u32 mark)
 {
 	struct flowi6 fl6;
 	struct dst_entry *dst;
@@ -36,6 +37,7 @@ static struct dst_entry *xfrm6_dst_lookup(struct net *net, int tos, int oif,
 	memset(&fl6, 0, sizeof(fl6));
 	fl6.flowi6_oif = l3mdev_master_ifindex_by_index(net, oif);
 	fl6.flowi6_flags = FLOWI_FLAG_SKIP_NH_OIF;
+	fl6.flowi6_mark = mark;
 	memcpy(&fl6.daddr, daddr, sizeof(fl6.daddr));
 	if (saddr)
 		memcpy(&fl6.saddr, saddr, sizeof(fl6.saddr));
@@ -52,12 +54,13 @@ static struct dst_entry *xfrm6_dst_lookup(struct net *net, int tos, int oif,
 }
 
 static int xfrm6_get_saddr(struct net *net, int oif,
-			   xfrm_address_t *saddr, xfrm_address_t *daddr)
+			   xfrm_address_t *saddr, xfrm_address_t *daddr,
+			   u32 mark)
 {
 	struct dst_entry *dst;
 	struct net_device *dev;
 
-	dst = xfrm6_dst_lookup(net, 0, oif, NULL, daddr);
+	dst = xfrm6_dst_lookup(net, 0, oif, NULL, daddr, mark);
 	if (IS_ERR(dst))
 		return -EHOSTUNREACH;
 
@@ -214,14 +217,6 @@ _decode_session6(struct sk_buff *skb, struct flowi *fl, int reverse)
 	}
 }
 
-static inline int xfrm6_garbage_collect(struct dst_ops *ops)
-{
-	struct net *net = container_of(ops, struct net, xfrm.xfrm6_dst_ops);
-
-	xfrm_garbage_collect_deferred(net);
-	return dst_entries_get_fast(ops) > ops->gc_thresh * 2;
-}
-
 static void xfrm6_update_pmtu(struct dst_entry *dst, struct sock *sk,
 			      struct sk_buff *skb, u32 mtu)
 {
@@ -279,14 +274,13 @@ static void xfrm6_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
 
 static struct dst_ops xfrm6_dst_ops_template = {
 	.family =		AF_INET6,
-	.gc =			xfrm6_garbage_collect,
 	.update_pmtu =		xfrm6_update_pmtu,
 	.redirect =		xfrm6_redirect,
 	.cow_metrics =		dst_cow_metrics_generic,
 	.destroy =		xfrm6_dst_destroy,
 	.ifdown =		xfrm6_dst_ifdown,
 	.local_out =		__ip6_local_out,
-	.gc_thresh =		INT_MAX,
+	.gc_thresh =		32768,
 };
 
 static const struct xfrm_policy_afinfo xfrm6_policy_afinfo = {
author	Linus Torvalds <torvalds@linux-foundation.org>	2017-09-06 14:45:08 -0700
committer	Linus Torvalds <torvalds@linux-foundation.org>	2017-09-06 14:45:08 -0700
commit	aae3dbb4776e7916b6cd442d00159bea27a695c1 (patch)
tree	d074c5d783a81e7e2e084b1eba77f57459da7e37 /net/ipv6
parent	ec3604c7a5aae8953545b0d05495357009a960e5 (diff)
parent	66bed8465a808400eb14562510e26c8818082cb8 (diff)