mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-13 14:14:37 +00:00
17c075923d
Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
93 lines
2.4 KiB
C
93 lines
2.4 KiB
C
/*
|
|
* 25-Jul-1998 Major changes to allow for ip chain table
|
|
*
|
|
* 3-Jan-2000 Named tables to allow packet selection for different uses.
|
|
*/
|
|
|
|
/*
|
|
* Format of an IP firewall descriptor
|
|
*
|
|
* src, dst, src_mask, dst_mask are always stored in network byte order.
|
|
* flags are stored in host byte order (of course).
|
|
* Port numbers are stored in HOST byte order.
|
|
*/
|
|
#ifndef _IPTABLES_H
|
|
#define _IPTABLES_H
|
|
|
|
#include <linux/if.h>
|
|
#include <linux/in.h>
|
|
#include <linux/ip.h>
|
|
#include <linux/skbuff.h>
|
|
|
|
#include <linux/init.h>
|
|
#include <uapi/linux/netfilter_ipv4/ip_tables.h>
|
|
|
|
extern void ipt_init(void) __init;
|
|
|
|
extern struct xt_table *ipt_register_table(struct net *net,
|
|
const struct xt_table *table,
|
|
const struct ipt_replace *repl);
|
|
extern void ipt_unregister_table(struct net *net, struct xt_table *table);
|
|
|
|
/* Standard entry. */
|
|
struct ipt_standard {
|
|
struct ipt_entry entry;
|
|
struct xt_standard_target target;
|
|
};
|
|
|
|
struct ipt_error {
|
|
struct ipt_entry entry;
|
|
struct xt_error_target target;
|
|
};
|
|
|
|
#define IPT_ENTRY_INIT(__size) \
|
|
{ \
|
|
.target_offset = sizeof(struct ipt_entry), \
|
|
.next_offset = (__size), \
|
|
}
|
|
|
|
#define IPT_STANDARD_INIT(__verdict) \
|
|
{ \
|
|
.entry = IPT_ENTRY_INIT(sizeof(struct ipt_standard)), \
|
|
.target = XT_TARGET_INIT(XT_STANDARD_TARGET, \
|
|
sizeof(struct xt_standard_target)), \
|
|
.target.verdict = -(__verdict) - 1, \
|
|
}
|
|
|
|
#define IPT_ERROR_INIT \
|
|
{ \
|
|
.entry = IPT_ENTRY_INIT(sizeof(struct ipt_error)), \
|
|
.target = XT_TARGET_INIT(XT_ERROR_TARGET, \
|
|
sizeof(struct xt_error_target)), \
|
|
.target.errorname = "ERROR", \
|
|
}
|
|
|
|
extern void *ipt_alloc_initial_table(const struct xt_table *);
|
|
extern unsigned int ipt_do_table(struct sk_buff *skb,
|
|
unsigned int hook,
|
|
const struct net_device *in,
|
|
const struct net_device *out,
|
|
struct xt_table *table);
|
|
|
|
#ifdef CONFIG_COMPAT
|
|
#include <net/compat.h>
|
|
|
|
struct compat_ipt_entry {
|
|
struct ipt_ip ip;
|
|
compat_uint_t nfcache;
|
|
__u16 target_offset;
|
|
__u16 next_offset;
|
|
compat_uint_t comefrom;
|
|
struct compat_xt_counters counters;
|
|
unsigned char elems[0];
|
|
};
|
|
|
|
/* Helper functions */
|
|
static inline struct xt_entry_target *
|
|
compat_ipt_get_target(struct compat_ipt_entry *e)
|
|
{
|
|
return (void *)e + e->target_offset;
|
|
}
|
|
|
|
#endif /* CONFIG_COMPAT */
|
|
#endif /* _IPTABLES_H */
|