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

Pablo Neira Ayuso says:

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

The following patchset contains Netfilter updates for net-next:

1) Support for destination MAC in ipset, from Stefano Brivio.

2) Disallow all-zeroes MAC address in ipset, also from Stefano.

3) Add IPSET_CMD_GET_BYNAME and IPSET_CMD_GET_BYINDEX commands,
   introduce protocol version number 7, from Jozsef Kadlecsik.
   A follow up patch to fix ip_set_byindex() is also included
   in this batch.

4) Honor CTA_MARK_MASK from ctnetlink, from Andreas Jaggi.

5) Statify nf_flow_table_iterate(), from Taehee Yoo.

6) Use nf_flow_table_iterate() to simplify garbage collection in
   nf_flow_table logic, also from Taehee Yoo.

7) Don't use _bh variants of call_rcu(), rcu_barrier() and
   synchronize_rcu_bh() in Netfilter, from Paul E. McKenney.

8) Remove NFC_* cache definition from the old caching
   infrastructure.

9) Remove layer 4 port rover in NAT helpers, use random port
   instead, from Florian Westphal.

10) Use strscpy() in ipset, from Qian Cai.

11) Remove NF_NAT_RANGE_PROTO_RANDOM_FULLY branch now that
    random port is allocated by default, from Xiaozhou Liu.

12) Ignore NF_NAT_RANGE_PROTO_RANDOM too, from Florian Westphal.

13) Limit port allocation selection routine in NAT to avoid
    softlockup splats when most ports are in use, from Florian.

14) Remove unused parameters in nf_ct_l4proto_unregister_sysctl()
    from Yafang Shao.

15) Direct call to nf_nat_l4proto_unique_tuple() instead of
    indirection, from Florian Westphal.

16) Several patches to remove all layer 4 NAT indirections,
    remove nf_nat_l4proto struct, from Florian Westphal.

17) Fix RTP/RTCP source port translation when SNAT is in place,
    from Alin Nastac.

18) Selective rule dump per chain, from Phil Sutter.

19) Revisit CLUSTERIP target, this includes a deadlock fix from
    netns path, sleep in atomic, remove bogus WARN_ON_ONCE()
    and disallow mismatching IP address and MAC address.
    Patchset from Taehee Yoo.

20) Update UDP timeout to stream after 2 seconds, from Florian.

21) Shrink UDP established timeout to 120 seconds like TCP timewait.

22) Sysctl knobs to set GRE timeouts, from Yafang Shao.

23) Move seq_print_acct() to conntrack core file, from Florian.

24) Add enum for conntrack sysctl knobs, also from Florian.

25) Place nf_conntrack_acct, nf_conntrack_helper, nf_conntrack_events
    and nf_conntrack_timestamp knobs in the core, from Florian Westphal.
    As a side effect, shrink netns_ct structure by removing obsolete
    sysctl anchors, also from Florian.
====================

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

16 files changed, 31 insertions, 192 deletions

diff --git a/include/linux/netfilter/ipset/ip_set.h b/include/linux/netfilter/ipset/ip_set.h
index 1d100efe74ec..f2e1e6b13ca4 100644
--- a/include/linux/netfilter/ipset/ip_set.h
+++ b/include/linux/netfilter/ipset/ip_set.h
@@ -303,11 +303,11 @@ ip_set_put_flags(struct sk_buff *skb, struct ip_set *set)
 /* Netlink CB args */
 enum {
 	IPSET_CB_NET = 0,	/* net namespace */
+	IPSET_CB_PROTO,		/* ipset protocol */
 	IPSET_CB_DUMP,		/* dump single set/all sets */
 	IPSET_CB_INDEX,		/* set index */
 	IPSET_CB_PRIVATE,	/* set private data */
 	IPSET_CB_ARG0,		/* type specific */
-	IPSET_CB_ARG1,
 };
 
 /* register and unregister set references */
diff --git a/include/linux/netfilter/nf_conntrack_proto_gre.h b/include/linux/netfilter/nf_conntrack_proto_gre.h
index 14edb795ab43..6989e2e4eabf 100644
--- a/include/linux/netfilter/nf_conntrack_proto_gre.h
+++ b/include/linux/netfilter/nf_conntrack_proto_gre.h
@@ -41,7 +41,5 @@ int nf_ct_gre_keymap_add(struct nf_conn *ct, enum ip_conntrack_dir dir,
 /* delete keymap entries */
 void nf_ct_gre_keymap_destroy(struct nf_conn *ct);
 
-void nf_nat_need_gre(void);
-
 #endif /* __KERNEL__ */
 #endif /* _CONNTRACK_PROTO_GRE_H */
diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h
index 7e012312cd61..249d0a5b12b8 100644
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -27,12 +27,17 @@
 
 #include <net/netfilter/nf_conntrack_tuple.h>
 
+struct nf_ct_udp {
+	unsigned long	stream_ts;
+};
+
 /* per conntrack: protocol private data */
 union nf_conntrack_proto {
 	/* insert conntrack proto private data here */
 	struct nf_ct_dccp dccp;
 	struct ip_ct_sctp sctp;
 	struct ip_ct_tcp tcp;
+	struct nf_ct_udp udp;
 	struct nf_ct_gre gre;
 	unsigned int tmpl_padto;
 };
diff --git a/include/net/netfilter/nf_conntrack_acct.h b/include/net/netfilter/nf_conntrack_acct.h
index 79d8d16732b4..bc6745d3010e 100644
--- a/include/net/netfilter/nf_conntrack_acct.h
+++ b/include/net/netfilter/nf_conntrack_acct.h
@@ -46,9 +46,6 @@ struct nf_conn_acct *nf_ct_acct_ext_add(struct nf_conn *ct, gfp_t gfp)
 	return acct;
 };
 
-unsigned int seq_print_acct(struct seq_file *s, const struct nf_conn *ct,
-			    int dir);
-
 /* Check if connection tracking accounting is enabled */
 static inline bool nf_ct_acct_enabled(struct net *net)
 {
@@ -61,8 +58,7 @@ static inline void nf_ct_set_acct(struct net *net, bool enable)
 	net->ct.sysctl_acct = enable;
 }
 
-int nf_conntrack_acct_pernet_init(struct net *net);
-void nf_conntrack_acct_pernet_fini(struct net *net);
+void nf_conntrack_acct_pernet_init(struct net *net);
 
 int nf_conntrack_acct_init(void);
 void nf_conntrack_acct_fini(void);
diff --git a/include/net/netfilter/nf_conntrack_ecache.h b/include/net/netfilter/nf_conntrack_ecache.h
index 3f1ce9a8776e..52b44192b43f 100644
--- a/include/net/netfilter/nf_conntrack_ecache.h
+++ b/include/net/netfilter/nf_conntrack_ecache.h
@@ -142,7 +142,7 @@ void nf_ct_expect_event_report(enum ip_conntrack_expect_events event,
 			       struct nf_conntrack_expect *exp,
 			       u32 portid, int report);
 
-int nf_conntrack_ecache_pernet_init(struct net *net);
+void nf_conntrack_ecache_pernet_init(struct net *net);
 void nf_conntrack_ecache_pernet_fini(struct net *net);
 
 int nf_conntrack_ecache_init(void);
@@ -182,10 +182,7 @@ static inline void nf_ct_expect_event_report(enum ip_conntrack_expect_events e,
  					     u32 portid,
  					     int report) {}
 
-static inline int nf_conntrack_ecache_pernet_init(struct net *net)
-{
-	return 0;
-}
+static inline void nf_conntrack_ecache_pernet_init(struct net *net) {}
 
 static inline void nf_conntrack_ecache_pernet_fini(struct net *net)
 {
diff --git a/include/net/netfilter/nf_conntrack_helper.h b/include/net/netfilter/nf_conntrack_helper.h
index 2492120b8097..ec52a8dc32fd 100644
--- a/include/net/netfilter/nf_conntrack_helper.h
+++ b/include/net/netfilter/nf_conntrack_helper.h
@@ -124,8 +124,7 @@ static inline void *nfct_help_data(const struct nf_conn *ct)
 	return (void *)help->data;
 }
 
-int nf_conntrack_helper_pernet_init(struct net *net);
-void nf_conntrack_helper_pernet_fini(struct net *net);
+void nf_conntrack_helper_pernet_init(struct net *net);
 
 int nf_conntrack_helper_init(void);
 void nf_conntrack_helper_fini(void);
diff --git a/include/net/netfilter/nf_conntrack_timestamp.h b/include/net/netfilter/nf_conntrack_timestamp.h
index 3b661986be8f..0ed617bf0a3d 100644
--- a/include/net/netfilter/nf_conntrack_timestamp.h
+++ b/include/net/netfilter/nf_conntrack_timestamp.h
@@ -49,21 +49,12 @@ static inline void nf_ct_set_tstamp(struct net *net, bool enable)
 }
 
 #ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
-int nf_conntrack_tstamp_pernet_init(struct net *net);
-void nf_conntrack_tstamp_pernet_fini(struct net *net);
+void nf_conntrack_tstamp_pernet_init(struct net *net);
 
 int nf_conntrack_tstamp_init(void);
 void nf_conntrack_tstamp_fini(void);
 #else
-static inline int nf_conntrack_tstamp_pernet_init(struct net *net)
-{
-	return 0;
-}
-
-static inline void nf_conntrack_tstamp_pernet_fini(struct net *net)
-{
-	return;
-}
+static inline void nf_conntrack_tstamp_pernet_init(struct net *net) {}
 
 static inline int nf_conntrack_tstamp_init(void)
 {
diff --git a/include/net/netfilter/nf_flow_table.h b/include/net/netfilter/nf_flow_table.h
index 77e2761d4f2f..7d5cda7ce32a 100644
--- a/include/net/netfilter/nf_flow_table.h
+++ b/include/net/netfilter/nf_flow_table.h
@@ -95,10 +95,6 @@ void flow_offload_free(struct flow_offload *flow);
 int flow_offload_add(struct nf_flowtable *flow_table, struct flow_offload *flow);
 struct flow_offload_tuple_rhash *flow_offload_lookup(struct nf_flowtable *flow_table,
 						     struct flow_offload_tuple *tuple);
-int nf_flow_table_iterate(struct nf_flowtable *flow_table,
-			  void (*iter)(struct flow_offload *flow, void *data),
-			  void *data);
-
 void nf_flow_table_cleanup(struct net_device *dev);
 
 int nf_flow_table_init(struct nf_flowtable *flow_table);
diff --git a/include/net/netfilter/nf_nat_l3proto.h b/include/net/netfilter/nf_nat_l3proto.h
index d300b8f03972..d774ca0c4c5e 100644
--- a/include/net/netfilter/nf_nat_l3proto.h
+++ b/include/net/netfilter/nf_nat_l3proto.h
@@ -2,18 +2,11 @@
 #ifndef _NF_NAT_L3PROTO_H
 #define _NF_NAT_L3PROTO_H
 
-struct nf_nat_l4proto;
 struct nf_nat_l3proto {
 	u8	l3proto;
 
-	bool	(*in_range)(const struct nf_conntrack_tuple *t,
-			    const struct nf_nat_range2 *range);
-
-	u32 	(*secure_port)(const struct nf_conntrack_tuple *t, __be16);
-
 	bool	(*manip_pkt)(struct sk_buff *skb,
 			     unsigned int iphdroff,
-			     const struct nf_nat_l4proto *l4proto,
 			     const struct nf_conntrack_tuple *target,
 			     enum nf_nat_manip_type maniptype);
 
diff --git a/include/net/netfilter/nf_nat_l4proto.h b/include/net/netfilter/nf_nat_l4proto.h
index b4d6b29bca62..95a4655bd1ad 100644
--- a/include/net/netfilter/nf_nat_l4proto.h
+++ b/include/net/netfilter/nf_nat_l4proto.h
@@ -5,78 +5,12 @@
 #include <net/netfilter/nf_nat.h>
 #include <linux/netfilter/nfnetlink_conntrack.h>
 
-struct nf_nat_range;
 struct nf_nat_l3proto;
 
-struct nf_nat_l4proto {
-	/* Protocol number. */
-	u8 l4proto;
-
-	/* Translate a packet to the target according to manip type.
-	 * Return true if succeeded.
-	 */
-	bool (*manip_pkt)(struct sk_buff *skb,
-			  const struct nf_nat_l3proto *l3proto,
-			  unsigned int iphdroff, unsigned int hdroff,
-			  const struct nf_conntrack_tuple *tuple,
-			  enum nf_nat_manip_type maniptype);
-
-	/* Is the manipable part of the tuple between min and max incl? */
-	bool (*in_range)(const struct nf_conntrack_tuple *tuple,
-			 enum nf_nat_manip_type maniptype,
-			 const union nf_conntrack_man_proto *min,
-			 const union nf_conntrack_man_proto *max);
-
-	/* Alter the per-proto part of the tuple (depending on
-	 * maniptype), to give a unique tuple in the given range if
-	 * possible.  Per-protocol part of tuple is initialized to the
-	 * incoming packet.
-	 */
-	void (*unique_tuple)(const struct nf_nat_l3proto *l3proto,
-			     struct nf_conntrack_tuple *tuple,
-			     const struct nf_nat_range2 *range,
-			     enum nf_nat_manip_type maniptype,
-			     const struct nf_conn *ct);
-
-	int (*nlattr_to_range)(struct nlattr *tb[],
-			       struct nf_nat_range2 *range);
-};
-
-/* Protocol registration. */
-int nf_nat_l4proto_register(u8 l3proto, const struct nf_nat_l4proto *l4proto);
-void nf_nat_l4proto_unregister(u8 l3proto,
-			       const struct nf_nat_l4proto *l4proto);
-
-const struct nf_nat_l4proto *__nf_nat_l4proto_find(u8 l3proto, u8 l4proto);
-
-/* Built-in protocols. */
-extern const struct nf_nat_l4proto nf_nat_l4proto_tcp;
-extern const struct nf_nat_l4proto nf_nat_l4proto_udp;
-extern const struct nf_nat_l4proto nf_nat_l4proto_icmp;
-extern const struct nf_nat_l4proto nf_nat_l4proto_icmpv6;
-extern const struct nf_nat_l4proto nf_nat_l4proto_unknown;
-#ifdef CONFIG_NF_NAT_PROTO_DCCP
-extern const struct nf_nat_l4proto nf_nat_l4proto_dccp;
-#endif
-#ifdef CONFIG_NF_NAT_PROTO_SCTP
-extern const struct nf_nat_l4proto nf_nat_l4proto_sctp;
-#endif
-#ifdef CONFIG_NF_NAT_PROTO_UDPLITE
-extern const struct nf_nat_l4proto nf_nat_l4proto_udplite;
-#endif
-
-bool nf_nat_l4proto_in_range(const struct nf_conntrack_tuple *tuple,
-			     enum nf_nat_manip_type maniptype,
-			     const union nf_conntrack_man_proto *min,
-			     const union nf_conntrack_man_proto *max);
-
-void nf_nat_l4proto_unique_tuple(const struct nf_nat_l3proto *l3proto,
-				 struct nf_conntrack_tuple *tuple,
-				 const struct nf_nat_range2 *range,
-				 enum nf_nat_manip_type maniptype,
-				 const struct nf_conn *ct, u16 *rover);
-
-int nf_nat_l4proto_nlattr_to_range(struct nlattr *tb[],
-				   struct nf_nat_range2 *range);
-
+/* Translate a packet to the target according to manip type.  Return on success. */
+bool nf_nat_l4proto_manip_pkt(struct sk_buff *skb,
+			      const struct nf_nat_l3proto *l3proto,
+			      unsigned int iphdroff, unsigned int hdroff,
+			      const struct nf_conntrack_tuple *tuple,
+			      enum nf_nat_manip_type maniptype);
 #endif /*_NF_NAT_L4PROTO_H*/
diff --git a/include/net/netns/conntrack.h b/include/net/netns/conntrack.h
index 9795d628a127..51cba0b8adf5 100644
--- a/include/net/netns/conntrack.h
+++ b/include/net/netns/conntrack.h
@@ -97,18 +97,14 @@ struct netns_ct {
 	struct delayed_work ecache_dwork;
 	bool ecache_dwork_pending;
 #endif
+	bool			auto_assign_helper_warned;
 #ifdef CONFIG_SYSCTL
 	struct ctl_table_header	*sysctl_header;
-	struct ctl_table_header	*acct_sysctl_header;
-	struct ctl_table_header	*tstamp_sysctl_header;
-	struct ctl_table_header	*event_sysctl_header;
-	struct ctl_table_header	*helper_sysctl_header;
 #endif
 	unsigned int		sysctl_log_invalid; /* Log invalid packets */
 	int			sysctl_events;
 	int			sysctl_acct;
 	int			sysctl_auto_assign_helper;
-	bool			auto_assign_helper_warned;
 	int			sysctl_tstamp;
 	int			sysctl_checksum;
 
diff --git a/include/uapi/linux/netfilter.h b/include/uapi/linux/netfilter.h
index cca10e767cd8..ca9e63d6e0e4 100644
--- a/include/uapi/linux/netfilter.h
+++ b/include/uapi/linux/netfilter.h
@@ -34,10 +34,6 @@
 
 /* only for userspace compatibility */
 #ifndef __KERNEL__
-/* Generic cache responses from hook functions.
-   <= 0x2000 is used for protocol-flags. */
-#define NFC_UNKNOWN 0x4000
-#define NFC_ALTERED 0x8000
 
 /* NF_VERDICT_BITS should be 8 now, but userspace might break if this changes */
 #define NF_VERDICT_BITS 16
diff --git a/include/uapi/linux/netfilter/ipset/ip_set.h b/include/uapi/linux/netfilter/ipset/ip_set.h
index 60236f694143..ea69ca21ff23 100644
--- a/include/uapi/linux/netfilter/ipset/ip_set.h
+++ b/include/uapi/linux/netfilter/ipset/ip_set.h
@@ -13,8 +13,9 @@
 
 #include <linux/types.h>
 
-/* The protocol version */
-#define IPSET_PROTOCOL		6
+/* The protocol versions */
+#define IPSET_PROTOCOL		7
+#define IPSET_PROTOCOL_MIN	6
 
 /* The max length of strings including NUL: set and type identifiers */
 #define IPSET_MAXNAMELEN	32
@@ -38,17 +39,19 @@ enum ipset_cmd {
 	IPSET_CMD_TEST,		/* 11: Test an element in a set */
 	IPSET_CMD_HEADER,	/* 12: Get set header data only */
 	IPSET_CMD_TYPE,		/* 13: Get set type */
+	IPSET_CMD_GET_BYNAME,	/* 14: Get set index by name */
+	IPSET_CMD_GET_BYINDEX,	/* 15: Get set name by index */
 	IPSET_MSG_MAX,		/* Netlink message commands */
 
 	/* Commands in userspace: */
-	IPSET_CMD_RESTORE = IPSET_MSG_MAX, /* 14: Enter restore mode */
-	IPSET_CMD_HELP,		/* 15: Get help */
-	IPSET_CMD_VERSION,	/* 16: Get program version */
-	IPSET_CMD_QUIT,		/* 17: Quit from interactive mode */
+	IPSET_CMD_RESTORE = IPSET_MSG_MAX, /* 16: Enter restore mode */
+	IPSET_CMD_HELP,		/* 17: Get help */
+	IPSET_CMD_VERSION,	/* 18: Get program version */
+	IPSET_CMD_QUIT,		/* 19: Quit from interactive mode */
 
 	IPSET_CMD_MAX,
 
-	IPSET_CMD_COMMIT = IPSET_CMD_MAX, /* 18: Commit buffered commands */
+	IPSET_CMD_COMMIT = IPSET_CMD_MAX, /* 20: Commit buffered commands */
 };
 
 /* Attributes at command level */
@@ -66,6 +69,7 @@ enum {
 	IPSET_ATTR_LINENO,	/* 9: Restore lineno */
 	IPSET_ATTR_PROTOCOL_MIN, /* 10: Minimal supported version number */
 	IPSET_ATTR_REVISION_MIN	= IPSET_ATTR_PROTOCOL_MIN, /* type rev min */
+	IPSET_ATTR_INDEX,	/* 11: Kernel index of set */
 	__IPSET_ATTR_CMD_MAX,
 };
 #define IPSET_ATTR_CMD_MAX	(__IPSET_ATTR_CMD_MAX - 1)
@@ -223,6 +227,7 @@ enum ipset_adt {
 
 /* Sets are identified by an index in kernel space. Tweak with ip_set_id_t
  * and IPSET_INVALID_ID if you want to increase the max number of sets.
+ * Also, IPSET_ATTR_INDEX must be changed.
  */
 typedef __u16 ip_set_id_t;
 
diff --git a/include/uapi/linux/netfilter_decnet.h b/include/uapi/linux/netfilter_decnet.h
index 61f1c7dfd033..3c77f54560f2 100644
--- a/include/uapi/linux/netfilter_decnet.h
+++ b/include/uapi/linux/netfilter_decnet.h
@@ -15,16 +15,6 @@
 
 #include <limits.h> /* for INT_MIN, INT_MAX */
 
-/* IP Cache bits. */
-/* Src IP address. */
-#define NFC_DN_SRC		0x0001
-/* Dest IP address. */
-#define NFC_DN_DST		0x0002
-/* Input device. */
-#define NFC_DN_IF_IN		0x0004
-/* Output device. */
-#define NFC_DN_IF_OUT		0x0008
-
 /* kernel define is in netfilter_defs.h */
 #define NF_DN_NUMHOOKS		7
 #endif /* ! __KERNEL__ */
diff --git a/include/uapi/linux/netfilter_ipv4.h b/include/uapi/linux/netfilter_ipv4.h
index c3b060775e13..155e77d6a42d 100644
--- a/include/uapi/linux/netfilter_ipv4.h
+++ b/include/uapi/linux/netfilter_ipv4.h
@@ -13,34 +13,6 @@
 
 #include <limits.h> /* for INT_MIN, INT_MAX */
 
-/* IP Cache bits. */
-/* Src IP address. */
-#define NFC_IP_SRC		0x0001
-/* Dest IP address. */
-#define NFC_IP_DST		0x0002
-/* Input device. */
-#define NFC_IP_IF_IN		0x0004
-/* Output device. */
-#define NFC_IP_IF_OUT		0x0008
-/* TOS. */
-#define NFC_IP_TOS		0x0010
-/* Protocol. */
-#define NFC_IP_PROTO		0x0020
-/* IP options. */
-#define NFC_IP_OPTIONS		0x0040
-/* Frag & flags. */
-#define NFC_IP_FRAG		0x0080
-
-/* Per-protocol information: only matters if proto match. */
-/* TCP flags. */
-#define NFC_IP_TCPFLAGS		0x0100
-/* Source port. */
-#define NFC_IP_SRC_PT		0x0200
-/* Dest port. */
-#define NFC_IP_DST_PT		0x0400
-/* Something else about the proto */
-#define NFC_IP_PROTO_UNKNOWN	0x2000
-
 /* IP Hooks */
 /* After promisc drops, checksum checks. */
 #define NF_IP_PRE_ROUTING	0
diff --git a/include/uapi/linux/netfilter_ipv6.h b/include/uapi/linux/netfilter_ipv6.h
index dc624fd24d25..80aa9b0799af 100644
--- a/include/uapi/linux/netfilter_ipv6.h
+++ b/include/uapi/linux/netfilter_ipv6.h
@@ -16,35 +16,6 @@
 
 #include <limits.h> /* for INT_MIN, INT_MAX */
 
-/* IP Cache bits. */
-/* Src IP address. */
-#define NFC_IP6_SRC              0x0001
-/* Dest IP address. */
-#define NFC_IP6_DST              0x0002
-/* Input device. */
-#define NFC_IP6_IF_IN            0x0004
-/* Output device. */
-#define NFC_IP6_IF_OUT           0x0008
-/* TOS. */
-#define NFC_IP6_TOS              0x0010
-/* Protocol. */
-#define NFC_IP6_PROTO            0x0020
-/* IP options. */
-#define NFC_IP6_OPTIONS          0x0040
-/* Frag & flags. */
-#define NFC_IP6_FRAG             0x0080
-
-
-/* Per-protocol information: only matters if proto match. */
-/* TCP flags. */
-#define NFC_IP6_TCPFLAGS         0x0100
-/* Source port. */
-#define NFC_IP6_SRC_PT           0x0200
-/* Dest port. */
-#define NFC_IP6_DST_PT           0x0400
-/* Something else about the proto */
-#define NFC_IP6_PROTO_UNKNOWN    0x2000
-
 /* IP6 Hooks */
 /* After promisc drops, checksum checks. */
 #define NF_IP6_PRE_ROUTING	0