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

Pablo Neira Ayuso says:

====================
Netfilter updates for net-next

This is second pull request includes the conflict resolution patch that
resulted from the updates that we got for the conntrack template through
kmalloc. No changes with regards to the previously sent 15 patches.

The following patchset contains Netfilter updates for your net-next tree, they
are:

1) Rework the existing nf_tables counter expression to make it per-cpu.

2) Prepare and factor out common packet duplication code from the TEE target so
   it can be reused from the new dup expression.

3) Add the new dup expression for the nf_tables IPv4 and IPv6 families.

4) Convert the nf_tables limit expression to use a token-based approach with
   64-bits precision.

5) Enhance the nf_tables limit expression to support limiting at packet byte.
   This comes after several preparation patches.

6) Add a burst parameter to indicate the amount of packets or bytes that can
   exceed the limiting.

7) Add netns support to nfacct, from Andreas Schultz.

8) Pass the nf_conn_zone structure instead of the zone ID in nf_tables to allow
   accessing more zone specific information, from Daniel Borkmann.

9) Allow to define zone per-direction to support netns containers with
   overlapping network addressing, also from Daniel.

10) Extend the CT target to allow setting the zone based on the skb->mark as a
   way to support simple mappings from iptables, also from Daniel.

11) Make the nf_tables payload expression aware of the fact that VLAN offload
    may have removed a vlan header, from Florian Westphal.
====================

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

include/uapi/linux/netfilter/nf_tables.h

@@ -756,16 +756,25 @@ enum nft_ct_attributes {
 };
 #define NFTA_CT_MAX		(__NFTA_CT_MAX - 1)
 
+enum nft_limit_type {
+	NFT_LIMIT_PKTS,
+	NFT_LIMIT_PKT_BYTES
+};
+
 /**
  * enum nft_limit_attributes - nf_tables limit expression netlink attributes
  *
  * @NFTA_LIMIT_RATE: refill rate (NLA_U64)
  * @NFTA_LIMIT_UNIT: refill unit (NLA_U64)
+ * @NFTA_LIMIT_BURST: burst (NLA_U32)
+ * @NFTA_LIMIT_TYPE: type of limit (NLA_U32: enum nft_limit_type)
  */
 enum nft_limit_attributes {
 	NFTA_LIMIT_UNSPEC,
 	NFTA_LIMIT_RATE,
 	NFTA_LIMIT_UNIT,
+	NFTA_LIMIT_BURST,
+	NFTA_LIMIT_TYPE,
 	__NFTA_LIMIT_MAX
 };
 #define NFTA_LIMIT_MAX		(__NFTA_LIMIT_MAX - 1)
@@ -935,6 +944,20 @@ enum nft_redir_attributes {
 };
 #define NFTA_REDIR_MAX		(__NFTA_REDIR_MAX - 1)
 
+/**
+ * enum nft_dup_attributes - nf_tables dup expression netlink attributes
+ *
+ * @NFTA_DUP_SREG_ADDR: source register of address (NLA_U32: nft_registers)
+ * @NFTA_DUP_SREG_DEV: source register of output interface (NLA_U32: nft_register)
+ */
+enum nft_dup_attributes {
+	NFTA_DUP_UNSPEC,
+	NFTA_DUP_SREG_ADDR,
+	NFTA_DUP_SREG_DEV,
+	__NFTA_DUP_MAX
+};
+#define NFTA_DUP_MAX		(__NFTA_DUP_MAX - 1)
+
 /**
  * enum nft_gen_attributes - nf_tables ruleset generation attributes
  *

include/uapi/linux/netfilter/nfnetlink_conntrack.h

@@ -61,6 +61,7 @@ enum ctattr_tuple {
 	CTA_TUPLE_UNSPEC,
 	CTA_TUPLE_IP,
 	CTA_TUPLE_PROTO,
+	CTA_TUPLE_ZONE,
 	__CTA_TUPLE_MAX
 };
 #define CTA_TUPLE_MAX (__CTA_TUPLE_MAX - 1)

include/uapi/linux/netfilter/xt_CT.h

@@ -6,7 +6,13 @@
 enum {
 	XT_CT_NOTRACK		= 1 << 0,
 	XT_CT_NOTRACK_ALIAS	= 1 << 1,
-	XT_CT_MASK		= XT_CT_NOTRACK | XT_CT_NOTRACK_ALIAS,
+	XT_CT_ZONE_DIR_ORIG	= 1 << 2,
+	XT_CT_ZONE_DIR_REPL	= 1 << 3,
+	XT_CT_ZONE_MARK		= 1 << 4,
+
+	XT_CT_MASK		= XT_CT_NOTRACK | XT_CT_NOTRACK_ALIAS |
+				  XT_CT_ZONE_DIR_ORIG | XT_CT_ZONE_DIR_REPL |
+				  XT_CT_ZONE_MARK,
 };
 
 struct xt_ct_target_info {