[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables

This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables.  In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.

o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
  wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
  are now implemented as xt_FOOBAR.c files and provide module aliases
  to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
  include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
  around the xt_FOOBAR.h headers

Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.

Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 12 insertions, 19 deletions

diff --git a/include/linux/netfilter_ipv4/ipt_connbytes.h b/include/linux/netfilter_ipv4/ipt_connbytes.h
index 9e5532f8d8a..b04dfa3083c 100644
--- a/include/linux/netfilter_ipv4/ipt_connbytes.h
+++ b/include/linux/netfilter_ipv4/ipt_connbytes.h
@@ -1,25 +1,18 @@
 #ifndef _IPT_CONNBYTES_H
 #define _IPT_CONNBYTES_H
 
-enum ipt_connbytes_what {
-        IPT_CONNBYTES_PKTS,
-        IPT_CONNBYTES_BYTES,
-        IPT_CONNBYTES_AVGPKT,
-};
+#include <net/netfilter/xt_connbytes.h>
+#define ipt_connbytes_what xt_connbytes_what
 
-enum ipt_connbytes_direction {
-        IPT_CONNBYTES_DIR_ORIGINAL,
-        IPT_CONNBYTES_DIR_REPLY,
-        IPT_CONNBYTES_DIR_BOTH,
-};
+#define IPT_CONNBYTES_PKTS      XT_CONNBYTES_PACKETS
+#define IPT_CONNBYTES_BYTES     XT_CONNBYTES_BYTES
+#define IPT_CONNBYTES_AVGPKT    XT_CONNBYTES_AVGPKT
+
+#define ipt_connbytes_direction         xt_connbytes_direction
+#define IPT_CONNBYTES_DIR_ORIGINAL      XT_CONNBYTES_DIR_ORIGINAL
+#define IPT_CONNBYTES_DIR_REPLY         XT_CONNBYTES_DIR_REPLY
+#define IPT_CONNBYTES_DIR_BOTH          XT_CONNBYTES_DIR_BOTH
+
+#define ipt_connbytes_info xt_connbytes_info
 
-struct ipt_connbytes_info
-{
-        struct {
-                aligned_u64 from;       /* count to be matched */
-                aligned_u64 to;         /* count to be matched */
-        } count;
-        u_int8_t what;          /* ipt_connbytes_what */
-        u_int8_t direction;     /* ipt_connbytes_direction */
-};
 #endif