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PATH: usr / include / linux / netfilter

#ifndef _X_TABLES_H
#define _X_TABLES_H
#include <linux/kernel.h>
#include <linux/types.h>

#define XT_FUNCTION_MAXNAMELEN 30
#define XT_EXTENSION_MAXNAMELEN 29
#define XT_TABLE_MAXNAMELEN 32

struct xt_entry_match {
	union {
		struct {
			__u16 match_size;

/* Used by userspace */
			char name[XT_EXTENSION_MAXNAMELEN];
			__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_EXTENSION_MAXNAMELEN];
			__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;
};

struct xt_error_target {
	struct xt_entry_target target;
	char errorname[XT_FUNCTION_MAXNAMELEN];
};

/* The argument to IPT_SO_GET_REVISION_*.  Returns highest revision
 * kernel supports, if >= revision. */
struct xt_get_revision {
	char name[XT_EXTENSION_MAXNAMELEN];
	__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) __ALIGN_KERNEL((s), __alignof__(struct _xt_align))

/* 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)

/* pos is normally a struct ipt_entry/ip6t_entry/etc. */
#define xt_entry_foreach(pos, ehead, esize) \
	for ((pos) = (typeof(pos))(ehead); \
	     (pos) < (typeof(pos))((char *)(ehead) + (esize)); \
	     (pos) = (typeof(pos))((char *)(pos) + (pos)->next_offset))

/* can only be xt_entry_match, so no use of typeof here */
#define xt_ematch_foreach(pos, entry) \
	for ((pos) = (struct xt_entry_match *)entry->elems; \
	     (pos) < (struct xt_entry_match *)((char *)(entry) + \
	             (entry)->target_offset); \
	     (pos) = (struct xt_entry_match *)((char *)(pos) + \
	             (pos)->u.match_size))

#endif /* _X_TABLES_H */

[-] xt_helper.h [edit]
[-] xt_HMARK.h [edit]
[-] xt_time.h [edit]
[-] xt_dccp.h [edit]
[-] xt_IDLETIMER.h [edit]
[-] xt_recent.h [edit]
[-] nfnetlink_acct.h [edit]
[-] xt_mac.h [edit]
[-] xt_rateest.h [edit]
[-] x_tables.h [edit]
[-] xt_mark.h [edit]
[-] xt_devgroup.h [edit]
[-] xt_connlimit.h [edit]
[-] nf_conntrack_ftp.h [edit]
[-] nfnetlink_cthelper.h [edit]
[+] ..
[-] xt_u32.h [edit]
[-] xt_rpfilter.h [edit]
[-] nf_tables_compat.h [edit]
[-] xt_policy.h [edit]
[-] xt_CLASSIFY.h [edit]
[-] xt_quota.h [edit]
[-] xt_TCPOPTSTRIP.h [edit]
[-] xt_comment.h [edit]
[-] xt_sctp.h [edit]
[-] xt_tcpudp.h [edit]
[-] xt_tcpmss.h [edit]
[-] xt_nfacct.h [edit]
[-] xt_TCPMSS.h [edit]
[-] xt_length.h [edit]
[-] xt_connlabel.h [edit]
[-] xt_cpu.h [edit]
[-] xt_osf.h [edit]
[-] xt_bpf.h [edit]
[-] xt_hashlimit.h [edit]
[-] xt_NFLOG.h [edit]
[-] nfnetlink_conntrack.h [edit]
[-] xt_AUDIT.h [edit]
[-] xt_pkttype.h [edit]
[-] xt_set.h [edit]
[-] xt_string.h [edit]
[-] xt_ipvs.h [edit]
[-] xt_socket.h [edit]
[-] nf_tables.h [edit]
[-] xt_CONNSECMARK.h [edit]
[-] xt_CONNMARK.h [edit]
[-] xt_NFQUEUE.h [edit]
[-] nf_nat.h [edit]
[-] xt_connbytes.h [edit]
[-] xt_addrtype.h [edit]
[-] nfnetlink_log.h [edit]
[-] xt_LED.h [edit]
[-] xt_LOG.h [edit]
[-] xt_physdev.h [edit]
[-] xt_state.h [edit]
[-] xt_realm.h [edit]
[-] xt_SECMARK.h [edit]
[-] xt_ecn.h [edit]
[-] xt_cluster.h [edit]
[+] ipset
[-] xt_connmark.h [edit]
[-] xt_esp.h [edit]
[-] xt_TEE.h [edit]
[-] xt_owner.h [edit]
[-] nfnetlink_compat.h [edit]
[-] xt_cgroup.h [edit]
[-] xt_CHECKSUM.h [edit]
[-] xt_TPROXY.h [edit]
[-] xt_CT.h [edit]
[-] nf_conntrack_tcp.h [edit]
[-] xt_iprange.h [edit]
[-] nf_conntrack_sctp.h [edit]
[-] xt_DSCP.h [edit]
[-] nf_conntrack_common.h [edit]
[-] xt_MARK.h [edit]
[-] nfnetlink.h [edit]
[-] xt_conntrack.h [edit]
[-] nfnetlink_cttimeout.h [edit]
[-] xt_limit.h [edit]
[-] xt_RATEEST.h [edit]
[-] nfnetlink_queue.h [edit]
[-] nf_conntrack_tuple_common.h [edit]
[-] xt_dscp.h [edit]
[-] xt_statistic.h [edit]
[-] xt_multiport.h [edit]