FM / netfilter

/usr/include/linux/netfilter

Name	Size	Mode	Actions
ipset/	-	0755	rm
nfnetlink.h	1557	0644	edit dl rm
nfnetlink_compat.h	2381	0644	edit dl rm
nfnetlink_conntrack.h	3526	0644	edit dl rm
nfnetlink_log.h	2517	0644	edit dl rm
nfnetlink_queue.h	2251	0644	edit dl rm
nf_conntrack_common.h	2315	0644	edit dl rm
nf_conntrack_ftp.h	375	0644	edit dl rm
nf_conntrack_sctp.h	623	0644	edit dl rm
nf_conntrack_tcp.h	1199	0644	edit dl rm
nf_conntrack_tuple_common.h	295	0644	edit dl rm
xt_AUDIT.h	655	0644	edit dl rm
xt_CHECKSUM.h	500	0644	edit dl rm
xt_CLASSIFY.h	154	0644	edit dl rm
xt_cluster.h	305	0644	edit dl rm
xt_comment.h	176	0644	edit dl rm
xt_connbytes.h	511	0644	edit dl rm
xt_connlimit.h	361	0644	edit dl rm
xt_CONNMARK.h	737	0644	edit dl rm
xt_connmark.h	613	0644	edit dl rm
xt_CONNSECMARK.h	238	0644	edit dl rm
xt_conntrack.h	2485	0644	edit dl rm
xt_dccp.h	420	0644	edit dl rm
xt_DSCP.h	634	0644	edit dl rm
xt_dscp.h	638	0644	edit dl rm
xt_esp.h	355	0644	edit dl rm
xt_hashlimit.h	1742	0644	edit dl rm
xt_helper.h	125	0644	edit dl rm
xt_iprange.h	489	0644	edit dl rm
xt_LED.h	407	0644	edit dl rm
xt_length.h	158	0644	edit dl rm
xt_limit.h	610	0644	edit dl rm
xt_mac.h	135	0644	edit dl rm
xt_MARK.h	366	0644	edit dl rm
xt_mark.h	222	0644	edit dl rm
xt_multiport.h	658	0644	edit dl rm
xt_NFLOG.h	326	0644	edit dl rm
xt_NFQUEUE.h	478	0644	edit dl rm
xt_osf.h	3347	0644	edit dl rm
xt_owner.h	306	0644	edit dl rm
xt_physdev.h	467	0644	edit dl rm
xt_pkttype.h	125	0644	edit dl rm
xt_policy.h	914	0644	edit dl rm
xt_quota.h	320	0644	edit dl rm
xt_RATEEST.h	305	0644	edit dl rm
xt_rateest.h	774	0644	edit dl rm
xt_realm.h	157	0644	edit dl rm
xt_recent.h	524	0644	edit dl rm
xt_sctp.h	2275	0644	edit dl rm
xt_SECMARK.h	591	0644	edit dl rm
xt_set.h	1100	0644	edit dl rm
xt_state.h	268	0644	edit dl rm
xt_statistic.h	653	0644	edit dl rm
xt_string.h	601	0644	edit dl rm
xt_TCPMSS.h	172	0644	edit dl rm
xt_tcpmss.h	190	0644	edit dl rm
xt_TCPOPTSTRIP.h	322	0644	edit dl rm
xt_tcpudp.h	1187	0644	edit dl rm
xt_time.h	503	0644	edit dl rm
xt_TPROXY.h	473	0644	edit dl rm
xt_u32.h	695	0644	edit dl rm
x_tables.h	3668	0644	edit dl rm

Edit: /usr/include/linux/netfilter/x_tables.h (3668B)

#ifndef _X_TABLES_H
#define _X_TABLES_H

#include <linux/types.h>

#define XT_FUNCTION_MAXNAMELEN 30
#define XT_TABLE_MAXNAMELEN 32

struct xt_entry_match
{
	union {
		struct {
			__u16 match_size;

/* Used by userspace */
			char name[XT_FUNCTION_MAXNAMELEN-1];

__u8 revision;
		} user;
		struct {
			__u16 match_size;

/* Used inside the kernel */
			struct xt_match *match;
		} kernel;

/* Total length */
		__u16 match_size;
	} u;

unsigned char data[0];
};

struct xt_entry_target
{
	union {
		struct {
			__u16 target_size;

/* Used by userspace */
			char name[XT_FUNCTION_MAXNAMELEN-1];

__u8 revision;
		} user;
		struct {
			__u16 target_size;

/* Used inside the kernel */
			struct xt_target *target;
		} kernel;

/* Total length */
		__u16 target_size;
	} u;

unsigned char data[0];
};

#define XT_TARGET_INIT(__name, __size)					       \
{									       \
	.target.u.user = {						       \
		.target_size	= XT_ALIGN(__size),			       \
		.name		= __name,				       \
	},								       \
}

struct xt_standard_target
{
	struct xt_entry_target target;
	int verdict;
};

/* The argument to IPT_SO_GET_REVISION_*.  Returns highest revision
 * kernel supports, if >= revision. */
struct xt_get_revision
{
	char name[XT_FUNCTION_MAXNAMELEN-1];

__u8 revision;
};

/* CONTINUE verdict for targets */
#define XT_CONTINUE 0xFFFFFFFF

/* For standard target */
#define XT_RETURN (-NF_REPEAT - 1)

/* 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
{
	__u8 u8;
	__u16 u16;
	__u32 u32;
	__u64 u64;
};

#define XT_ALIGN(s) (((s) + (__alignof__(struct _xt_align)-1)) 	\
			& ~(__alignof__(struct _xt_align)-1))

/* 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
{
	__u64 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. */

/* 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)

#endif /* _X_TABLES_H */

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