[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>
2006-01-12 21:30:04 +00:00
|
|
|
#ifndef _X_TABLES_H
|
|
|
|
#define _X_TABLES_H
|
|
|
|
|
|
|
|
#define XT_FUNCTION_MAXNAMELEN 30
|
|
|
|
#define XT_TABLE_MAXNAMELEN 32
|
|
|
|
|
2006-03-22 21:56:56 +00:00
|
|
|
struct xt_entry_match
|
|
|
|
{
|
|
|
|
union {
|
|
|
|
struct {
|
|
|
|
u_int16_t match_size;
|
|
|
|
|
|
|
|
/* Used by userspace */
|
|
|
|
char name[XT_FUNCTION_MAXNAMELEN-1];
|
|
|
|
|
|
|
|
u_int8_t revision;
|
|
|
|
} user;
|
|
|
|
struct {
|
|
|
|
u_int16_t match_size;
|
|
|
|
|
|
|
|
/* Used inside the kernel */
|
|
|
|
struct xt_match *match;
|
|
|
|
} kernel;
|
|
|
|
|
|
|
|
/* Total length */
|
|
|
|
u_int16_t match_size;
|
|
|
|
} u;
|
|
|
|
|
|
|
|
unsigned char data[0];
|
|
|
|
};
|
|
|
|
|
|
|
|
struct xt_entry_target
|
|
|
|
{
|
|
|
|
union {
|
|
|
|
struct {
|
|
|
|
u_int16_t target_size;
|
|
|
|
|
|
|
|
/* Used by userspace */
|
|
|
|
char name[XT_FUNCTION_MAXNAMELEN-1];
|
|
|
|
|
|
|
|
u_int8_t revision;
|
|
|
|
} user;
|
|
|
|
struct {
|
|
|
|
u_int16_t target_size;
|
|
|
|
|
|
|
|
/* Used inside the kernel */
|
|
|
|
struct xt_target *target;
|
|
|
|
} kernel;
|
|
|
|
|
|
|
|
/* Total length */
|
|
|
|
u_int16_t target_size;
|
|
|
|
} u;
|
|
|
|
|
|
|
|
unsigned char data[0];
|
|
|
|
};
|
|
|
|
|
2007-05-10 21:14:16 +00:00
|
|
|
#define XT_TARGET_INIT(__name, __size) \
|
|
|
|
{ \
|
|
|
|
.target.u.user = { \
|
|
|
|
.target_size = XT_ALIGN(__size), \
|
|
|
|
.name = __name, \
|
|
|
|
}, \
|
|
|
|
}
|
|
|
|
|
2006-03-22 21:56:56 +00:00
|
|
|
struct xt_standard_target
|
|
|
|
{
|
|
|
|
struct xt_entry_target target;
|
|
|
|
int verdict;
|
|
|
|
};
|
|
|
|
|
[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>
2006-01-12 21:30:04 +00:00
|
|
|
/* The argument to IPT_SO_GET_REVISION_*. Returns highest revision
|
|
|
|
* kernel supports, if >= revision. */
|
|
|
|
struct xt_get_revision
|
|
|
|
{
|
|
|
|
char name[XT_FUNCTION_MAXNAMELEN-1];
|
|
|
|
|
|
|
|
u_int8_t revision;
|
|
|
|
};
|
|
|
|
|
|
|
|
/* CONTINUE verdict for targets */
|
|
|
|
#define XT_CONTINUE 0xFFFFFFFF
|
|
|
|
|
|
|
|
/* For standard target */
|
|
|
|
#define XT_RETURN (-NF_REPEAT - 1)
|
|
|
|
|
2006-01-20 19:57:07 +00:00
|
|
|
/* this is a dummy structure to find out the alignment requirement for a struct
|
|
|
|
* containing all the fundamental data types that are used in ipt_entry,
|
|
|
|
* ip6t_entry and arpt_entry. This sucks, and it is a hack. It will be my
|
|
|
|
* personal pleasure to remove it -HW
|
|
|
|
*/
|
|
|
|
struct _xt_align
|
|
|
|
{
|
|
|
|
u_int8_t u8;
|
|
|
|
u_int16_t u16;
|
|
|
|
u_int32_t u32;
|
|
|
|
u_int64_t u64;
|
|
|
|
};
|
|
|
|
|
|
|
|
#define XT_ALIGN(s) (((s) + (__alignof__(struct _xt_align)-1)) \
|
|
|
|
& ~(__alignof__(struct _xt_align)-1))
|
[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>
2006-01-12 21:30:04 +00:00
|
|
|
|
|
|
|
/* Standard return verdict, or do jump. */
|
|
|
|
#define XT_STANDARD_TARGET ""
|
|
|
|
/* Error verdict. */
|
|
|
|
#define XT_ERROR_TARGET "ERROR"
|
|
|
|
|
|
|
|
#define SET_COUNTER(c,b,p) do { (c).bcnt = (b); (c).pcnt = (p); } while(0)
|
|
|
|
#define ADD_COUNTER(c,b,p) do { (c).bcnt += (b); (c).pcnt += (p); } while(0)
|
|
|
|
|
|
|
|
struct xt_counters
|
|
|
|
{
|
|
|
|
u_int64_t pcnt, bcnt; /* Packet and byte counters */
|
|
|
|
};
|
|
|
|
|
|
|
|
/* The argument to IPT_SO_ADD_COUNTERS. */
|
|
|
|
struct xt_counters_info
|
|
|
|
{
|
|
|
|
/* Which table. */
|
|
|
|
char name[XT_TABLE_MAXNAMELEN];
|
|
|
|
|
|
|
|
unsigned int num_counters;
|
|
|
|
|
|
|
|
/* The counters (actually `number' of these). */
|
|
|
|
struct xt_counters counters[0];
|
|
|
|
};
|
|
|
|
|
|
|
|
#define XT_INV_PROTO 0x40 /* Invert the sense of PROTO. */
|
|
|
|
|
2007-12-18 05:46:59 +00:00
|
|
|
/* fn returns 0 to continue iteration */
|
|
|
|
#define XT_MATCH_ITERATE(type, e, fn, args...) \
|
|
|
|
({ \
|
|
|
|
unsigned int __i; \
|
|
|
|
int __ret = 0; \
|
|
|
|
struct xt_entry_match *__m; \
|
|
|
|
\
|
|
|
|
for (__i = sizeof(type); \
|
|
|
|
__i < (e)->target_offset; \
|
|
|
|
__i += __m->u.match_size) { \
|
|
|
|
__m = (void *)e + __i; \
|
|
|
|
\
|
|
|
|
__ret = fn(__m , ## args); \
|
|
|
|
if (__ret != 0) \
|
|
|
|
break; \
|
|
|
|
} \
|
|
|
|
__ret; \
|
|
|
|
})
|
|
|
|
|
|
|
|
/* fn returns 0 to continue iteration */
|
|
|
|
#define XT_ENTRY_ITERATE_CONTINUE(type, entries, size, n, fn, args...) \
|
|
|
|
({ \
|
|
|
|
unsigned int __i, __n; \
|
|
|
|
int __ret = 0; \
|
|
|
|
type *__entry; \
|
|
|
|
\
|
|
|
|
for (__i = 0, __n = 0; __i < (size); \
|
|
|
|
__i += __entry->next_offset, __n++) { \
|
|
|
|
__entry = (void *)(entries) + __i; \
|
|
|
|
if (__n < n) \
|
|
|
|
continue; \
|
|
|
|
\
|
|
|
|
__ret = fn(__entry , ## args); \
|
|
|
|
if (__ret != 0) \
|
|
|
|
break; \
|
|
|
|
} \
|
|
|
|
__ret; \
|
|
|
|
})
|
|
|
|
|
|
|
|
/* fn returns 0 to continue iteration */
|
|
|
|
#define XT_ENTRY_ITERATE(type, entries, size, fn, args...) \
|
|
|
|
XT_ENTRY_ITERATE_CONTINUE(type, entries, size, 0, fn, args)
|
|
|
|
|
[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>
2006-01-12 21:30:04 +00:00
|
|
|
#ifdef __KERNEL__
|
|
|
|
|
|
|
|
#include <linux/netdevice.h>
|
|
|
|
|
|
|
|
struct xt_match
|
|
|
|
{
|
|
|
|
struct list_head list;
|
|
|
|
|
|
|
|
const char name[XT_FUNCTION_MAXNAMELEN-1];
|
|
|
|
|
|
|
|
/* Return true or false: return FALSE and set *hotdrop = 1 to
|
|
|
|
force immediate packet drop. */
|
|
|
|
/* Arguments changed since 2.6.9, as this must now handle
|
|
|
|
non-linear skb, using skb_header_pointer and
|
|
|
|
skb_ip_make_writable. */
|
2007-07-08 05:15:35 +00:00
|
|
|
bool (*match)(const struct sk_buff *skb,
|
|
|
|
const struct net_device *in,
|
|
|
|
const struct net_device *out,
|
|
|
|
const struct xt_match *match,
|
|
|
|
const void *matchinfo,
|
|
|
|
int offset,
|
|
|
|
unsigned int protoff,
|
|
|
|
bool *hotdrop);
|
[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>
2006-01-12 21:30:04 +00:00
|
|
|
|
|
|
|
/* Called when user tries to insert an entry of this type. */
|
|
|
|
/* Should return true or false. */
|
2007-07-08 05:16:00 +00:00
|
|
|
bool (*checkentry)(const char *tablename,
|
|
|
|
const void *ip,
|
|
|
|
const struct xt_match *match,
|
|
|
|
void *matchinfo,
|
|
|
|
unsigned int hook_mask);
|
[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>
2006-01-12 21:30:04 +00:00
|
|
|
|
|
|
|
/* Called when entry of this type deleted. */
|
2006-08-22 07:36:37 +00:00
|
|
|
void (*destroy)(const struct xt_match *match, void *matchinfo);
|
[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>
2006-01-12 21:30:04 +00:00
|
|
|
|
2006-04-01 10:25:19 +00:00
|
|
|
/* Called when userspace align differs from kernel space one */
|
2006-09-20 19:05:37 +00:00
|
|
|
void (*compat_from_user)(void *dst, void *src);
|
|
|
|
int (*compat_to_user)(void __user *dst, void *src);
|
2006-04-01 10:25:19 +00:00
|
|
|
|
[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>
2006-01-12 21:30:04 +00:00
|
|
|
/* Set this to THIS_MODULE if you are a module, otherwise NULL */
|
|
|
|
struct module *me;
|
2006-03-21 01:59:06 +00:00
|
|
|
|
2006-08-22 07:43:38 +00:00
|
|
|
/* Free to use by each match */
|
|
|
|
unsigned long data;
|
|
|
|
|
2006-03-21 01:59:06 +00:00
|
|
|
char *table;
|
|
|
|
unsigned int matchsize;
|
2006-09-20 19:05:37 +00:00
|
|
|
unsigned int compatsize;
|
2006-03-21 01:59:06 +00:00
|
|
|
unsigned int hooks;
|
|
|
|
unsigned short proto;
|
2006-03-21 02:03:40 +00:00
|
|
|
|
|
|
|
unsigned short family;
|
2006-03-21 01:59:06 +00:00
|
|
|
u_int8_t revision;
|
[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>
2006-01-12 21:30:04 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
/* Registration hooks for targets. */
|
|
|
|
struct xt_target
|
|
|
|
{
|
|
|
|
struct list_head list;
|
|
|
|
|
|
|
|
const char name[XT_FUNCTION_MAXNAMELEN-1];
|
|
|
|
|
|
|
|
/* Returns verdict. Argument order changed since 2.6.9, as this
|
|
|
|
must now handle non-linear skbs, using skb_copy_bits and
|
|
|
|
skb_ip_make_writable. */
|
2007-10-15 07:53:15 +00:00
|
|
|
unsigned int (*target)(struct sk_buff *skb,
|
[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>
2006-01-12 21:30:04 +00:00
|
|
|
const struct net_device *in,
|
|
|
|
const struct net_device *out,
|
|
|
|
unsigned int hooknum,
|
2006-03-21 02:02:15 +00:00
|
|
|
const struct xt_target *target,
|
2006-08-22 07:35:47 +00:00
|
|
|
const void *targinfo);
|
[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>
2006-01-12 21:30:04 +00:00
|
|
|
|
|
|
|
/* Called when user tries to insert an entry of this type:
|
|
|
|
hook_mask is a bitmask of hooks from which it can be
|
|
|
|
called. */
|
|
|
|
/* Should return true or false. */
|
2007-07-08 05:16:26 +00:00
|
|
|
bool (*checkentry)(const char *tablename,
|
|
|
|
const void *entry,
|
|
|
|
const struct xt_target *target,
|
|
|
|
void *targinfo,
|
|
|
|
unsigned int hook_mask);
|
[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>
2006-01-12 21:30:04 +00:00
|
|
|
|
|
|
|
/* Called when entry of this type deleted. */
|
2006-08-22 07:36:37 +00:00
|
|
|
void (*destroy)(const struct xt_target *target, void *targinfo);
|
[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>
2006-01-12 21:30:04 +00:00
|
|
|
|
2006-04-01 10:25:19 +00:00
|
|
|
/* Called when userspace align differs from kernel space one */
|
2006-09-20 19:05:37 +00:00
|
|
|
void (*compat_from_user)(void *dst, void *src);
|
|
|
|
int (*compat_to_user)(void __user *dst, void *src);
|
2006-04-01 10:25:19 +00:00
|
|
|
|
[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>
2006-01-12 21:30:04 +00:00
|
|
|
/* Set this to THIS_MODULE if you are a module, otherwise NULL */
|
|
|
|
struct module *me;
|
2006-03-21 01:59:06 +00:00
|
|
|
|
|
|
|
char *table;
|
|
|
|
unsigned int targetsize;
|
2006-09-20 19:05:37 +00:00
|
|
|
unsigned int compatsize;
|
2006-03-21 01:59:06 +00:00
|
|
|
unsigned int hooks;
|
|
|
|
unsigned short proto;
|
2006-03-21 02:03:40 +00:00
|
|
|
|
|
|
|
unsigned short family;
|
2006-03-21 01:59:06 +00:00
|
|
|
u_int8_t revision;
|
[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>
2006-01-12 21:30:04 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
/* Furniture shopping... */
|
|
|
|
struct xt_table
|
|
|
|
{
|
|
|
|
struct list_head list;
|
|
|
|
|
|
|
|
/* A unique name... */
|
|
|
|
char name[XT_TABLE_MAXNAMELEN];
|
|
|
|
|
|
|
|
/* What hooks you will enter on */
|
|
|
|
unsigned int valid_hooks;
|
|
|
|
|
|
|
|
/* Lock for the curtain */
|
|
|
|
rwlock_t lock;
|
|
|
|
|
|
|
|
/* Man behind the curtain... */
|
|
|
|
//struct ip6t_table_info *private;
|
|
|
|
void *private;
|
|
|
|
|
|
|
|
/* Set this to THIS_MODULE if you are a module, otherwise NULL */
|
|
|
|
struct module *me;
|
|
|
|
|
|
|
|
int af; /* address/protocol family */
|
|
|
|
};
|
|
|
|
|
|
|
|
#include <linux/netfilter_ipv4.h>
|
|
|
|
|
|
|
|
/* The table itself */
|
|
|
|
struct xt_table_info
|
|
|
|
{
|
|
|
|
/* Size per table */
|
|
|
|
unsigned int size;
|
|
|
|
/* Number of entries: FIXME. --RR */
|
|
|
|
unsigned int number;
|
|
|
|
/* Initial number of entries. Needed for module usage count */
|
|
|
|
unsigned int initial_entries;
|
|
|
|
|
|
|
|
/* Entry points and underflows */
|
2007-11-20 02:53:30 +00:00
|
|
|
unsigned int hook_entry[NF_INET_NUMHOOKS];
|
|
|
|
unsigned int underflow[NF_INET_NUMHOOKS];
|
[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>
2006-01-12 21:30:04 +00:00
|
|
|
|
|
|
|
/* ipt_entry tables: one per CPU */
|
2007-12-05 07:24:56 +00:00
|
|
|
/* Note : this field MUST be the last one, see XT_TABLE_INFO_SZ */
|
|
|
|
char *entries[1];
|
[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>
2006-01-12 21:30:04 +00:00
|
|
|
};
|
|
|
|
|
2007-12-05 07:24:56 +00:00
|
|
|
#define XT_TABLE_INFO_SZ (offsetof(struct xt_table_info, entries) \
|
|
|
|
+ nr_cpu_ids * sizeof(char *))
|
2006-03-22 21:55:40 +00:00
|
|
|
extern int xt_register_target(struct xt_target *target);
|
|
|
|
extern void xt_unregister_target(struct xt_target *target);
|
2006-08-22 07:33:45 +00:00
|
|
|
extern int xt_register_targets(struct xt_target *target, unsigned int n);
|
|
|
|
extern void xt_unregister_targets(struct xt_target *target, unsigned int n);
|
|
|
|
|
2006-03-22 21:55:40 +00:00
|
|
|
extern int xt_register_match(struct xt_match *target);
|
|
|
|
extern void xt_unregister_match(struct xt_match *target);
|
2006-08-22 07:33:45 +00:00
|
|
|
extern int xt_register_matches(struct xt_match *match, unsigned int n);
|
|
|
|
extern void xt_unregister_matches(struct xt_match *match, unsigned int n);
|
[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>
2006-01-12 21:30:04 +00:00
|
|
|
|
2006-03-21 01:59:06 +00:00
|
|
|
extern int xt_check_match(const struct xt_match *match, unsigned short family,
|
|
|
|
unsigned int size, const char *table, unsigned int hook,
|
|
|
|
unsigned short proto, int inv_proto);
|
|
|
|
extern int xt_check_target(const struct xt_target *target, unsigned short family,
|
|
|
|
unsigned int size, const char *table, unsigned int hook,
|
|
|
|
unsigned short proto, int inv_proto);
|
|
|
|
|
[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>
2006-01-12 21:30:04 +00:00
|
|
|
extern int xt_register_table(struct xt_table *table,
|
|
|
|
struct xt_table_info *bootstrap,
|
|
|
|
struct xt_table_info *newinfo);
|
|
|
|
extern void *xt_unregister_table(struct xt_table *table);
|
|
|
|
|
|
|
|
extern struct xt_table_info *xt_replace_table(struct xt_table *table,
|
|
|
|
unsigned int num_counters,
|
|
|
|
struct xt_table_info *newinfo,
|
|
|
|
int *error);
|
|
|
|
|
|
|
|
extern struct xt_match *xt_find_match(int af, const char *name, u8 revision);
|
|
|
|
extern struct xt_target *xt_find_target(int af, const char *name, u8 revision);
|
|
|
|
extern struct xt_target *xt_request_find_target(int af, const char *name,
|
|
|
|
u8 revision);
|
|
|
|
extern int xt_find_revision(int af, const char *name, u8 revision, int target,
|
|
|
|
int *err);
|
|
|
|
|
|
|
|
extern struct xt_table *xt_find_table_lock(int af, const char *name);
|
|
|
|
extern void xt_table_unlock(struct xt_table *t);
|
|
|
|
|
|
|
|
extern int xt_proto_init(int af);
|
|
|
|
extern void xt_proto_fini(int af);
|
|
|
|
|
|
|
|
extern struct xt_table_info *xt_alloc_table_info(unsigned int size);
|
|
|
|
extern void xt_free_table_info(struct xt_table_info *info);
|
|
|
|
|
2006-04-01 10:25:19 +00:00
|
|
|
#ifdef CONFIG_COMPAT
|
|
|
|
#include <net/compat.h>
|
|
|
|
|
|
|
|
struct compat_xt_entry_match
|
|
|
|
{
|
|
|
|
union {
|
|
|
|
struct {
|
|
|
|
u_int16_t match_size;
|
|
|
|
char name[XT_FUNCTION_MAXNAMELEN - 1];
|
|
|
|
u_int8_t revision;
|
|
|
|
} user;
|
2006-05-02 03:12:22 +00:00
|
|
|
struct {
|
|
|
|
u_int16_t match_size;
|
|
|
|
compat_uptr_t match;
|
|
|
|
} kernel;
|
2006-04-01 10:25:19 +00:00
|
|
|
u_int16_t match_size;
|
|
|
|
} u;
|
|
|
|
unsigned char data[0];
|
|
|
|
};
|
|
|
|
|
|
|
|
struct compat_xt_entry_target
|
|
|
|
{
|
|
|
|
union {
|
|
|
|
struct {
|
|
|
|
u_int16_t target_size;
|
|
|
|
char name[XT_FUNCTION_MAXNAMELEN - 1];
|
|
|
|
u_int8_t revision;
|
|
|
|
} user;
|
2006-05-02 03:12:22 +00:00
|
|
|
struct {
|
|
|
|
u_int16_t target_size;
|
|
|
|
compat_uptr_t target;
|
|
|
|
} kernel;
|
2006-04-01 10:25:19 +00:00
|
|
|
u_int16_t target_size;
|
|
|
|
} u;
|
|
|
|
unsigned char data[0];
|
|
|
|
};
|
|
|
|
|
|
|
|
/* FIXME: this works only on 32 bit tasks
|
|
|
|
* need to change whole approach in order to calculate align as function of
|
|
|
|
* current task alignment */
|
|
|
|
|
|
|
|
struct compat_xt_counters
|
|
|
|
{
|
2006-04-25 00:16:28 +00:00
|
|
|
#if defined(CONFIG_X86_64) || defined(CONFIG_IA64)
|
2006-04-01 10:25:19 +00:00
|
|
|
u_int32_t cnt[4];
|
2006-04-25 00:16:28 +00:00
|
|
|
#else
|
|
|
|
u_int64_t cnt[2];
|
|
|
|
#endif
|
2006-04-01 10:25:19 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
struct compat_xt_counters_info
|
|
|
|
{
|
|
|
|
char name[XT_TABLE_MAXNAMELEN];
|
|
|
|
compat_uint_t num_counters;
|
|
|
|
struct compat_xt_counters counters[0];
|
|
|
|
};
|
|
|
|
|
|
|
|
#define COMPAT_XT_ALIGN(s) (((s) + (__alignof__(struct compat_xt_counters)-1)) \
|
|
|
|
& ~(__alignof__(struct compat_xt_counters)-1))
|
|
|
|
|
|
|
|
extern void xt_compat_lock(int af);
|
|
|
|
extern void xt_compat_unlock(int af);
|
2006-09-20 19:05:37 +00:00
|
|
|
|
2007-12-18 05:47:48 +00:00
|
|
|
extern int xt_compat_add_offset(int af, unsigned int offset, short delta);
|
|
|
|
extern void xt_compat_flush_offsets(int af);
|
|
|
|
extern short xt_compat_calc_jump(int af, unsigned int offset);
|
|
|
|
|
2006-09-20 19:05:37 +00:00
|
|
|
extern int xt_compat_match_offset(struct xt_match *match);
|
2007-12-18 05:46:40 +00:00
|
|
|
extern int xt_compat_match_from_user(struct xt_entry_match *m,
|
|
|
|
void **dstptr, int *size);
|
2006-09-20 19:05:37 +00:00
|
|
|
extern int xt_compat_match_to_user(struct xt_entry_match *m,
|
2006-09-24 22:42:20 +00:00
|
|
|
void __user **dstptr, int *size);
|
2006-09-20 19:05:37 +00:00
|
|
|
|
|
|
|
extern int xt_compat_target_offset(struct xt_target *target);
|
|
|
|
extern void xt_compat_target_from_user(struct xt_entry_target *t,
|
|
|
|
void **dstptr, int *size);
|
|
|
|
extern int xt_compat_target_to_user(struct xt_entry_target *t,
|
2006-09-24 22:42:20 +00:00
|
|
|
void __user **dstptr, int *size);
|
2006-04-01 10:25:19 +00:00
|
|
|
|
|
|
|
#endif /* CONFIG_COMPAT */
|
[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>
2006-01-12 21:30:04 +00:00
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
|
|
|
|
#endif /* _X_TABLES_H */
|