x_tables.h File Reference

#include <linux/kernel.h>
#include <linux/types.h>

Include dependency graph for x_tables.h:

This graph shows which files directly or indirectly include this file:

Data Structures
struct	xt_entry_match
struct	xt_entry_target
struct	xt_standard_target
struct	xt_error_target
struct	xt_get_revision
struct	_xt_align
struct	xt_counters
struct	xt_counters_info

Macros
#define	XT_FUNCTION_MAXNAMELEN   30
#define	XT_EXTENSION_MAXNAMELEN   29
#define	XT_TABLE_MAXNAMELEN   32
#define	XT_TARGET_INIT(__name, __size)
#define	XT_CONTINUE   0xFFFFFFFF
#define	XT_RETURN   (-NF_REPEAT - 1)
#define	XT_ALIGN(s)   __ALIGN_KERNEL((s), __alignof__(struct _xt_align))
#define	XT_STANDARD_TARGET   ""
#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)
#define	XT_INV_PROTO   0x40 /* Invert the sense of PROTO. */
#define	XT_MATCH_ITERATE(type, e, fn, args...)
#define	XT_ENTRY_ITERATE_CONTINUE(type, entries, size, n, fn, args...)
#define	XT_ENTRY_ITERATE(type, entries, size, fn, args...)   XT_ENTRY_ITERATE_CONTINUE(type, entries, size, 0, fn, args)
#define	xt_entry_foreach(pos, ehead, esize)
#define	xt_ematch_foreach(pos, entry)

Macro Definition Documentation

#define ADD_COUNTER	(		c,
			b,
			p
	)		do { (c).bcnt += (b); (c).pcnt += (p); } while(0)

#define SET_COUNTER	(		c,
			b,
			p
	)		do { (c).bcnt = (b); (c).pcnt = (p); } while(0)

#define XT_ALIGN

(

s

)

__ALIGN_KERNEL((s), __alignof__(struct _xt_align))

#define XT_CONTINUE   0xFFFFFFFF

#define xt_ematch_foreach	(		pos,
			entry
	)

Value:

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))

#define xt_entry_foreach	(		pos,
			ehead,
			esize
	)

Value:

for ((pos) = (typeof(pos))(ehead); \
         (pos) < (typeof(pos))((char *)(ehead) + (esize)); \
         (pos) = (typeof(pos))((char *)(pos) + (pos)->next_offset))

#define XT_ENTRY_ITERATE	(		type,
			entries,
			size,
			fn,
			args...
	)		XT_ENTRY_ITERATE_CONTINUE(type, entries, size, 0, fn, args)

#define XT_ENTRY_ITERATE_CONTINUE	(		type,
			entries,
			size,
			n,
			fn,
			args...
	)

Value:

({                              \
	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;                          \
})

#define XT_ERROR_TARGET   "ERROR"

#define XT_EXTENSION_MAXNAMELEN   29

Referenced by do_commandx(), ip6tables_restore_main(), iptables_restore_main(), xtables_find_match(), xtables_register_match(), and xtables_register_target().

#define XT_FUNCTION_MAXNAMELEN   30

#define XT_INV_PROTO   0x40 /* Invert the sense of PROTO. */

Referenced by do_command4(), do_command6(), do_commandx(), print_firewall_details(), print_rule4(), print_rule6(), and save_firewall_details().

#define XT_MATCH_ITERATE	(		type,
			e,
			fn,
			args...
	)

Value:

({                              \
	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;                          \
})

#define XT_RETURN   (-NF_REPEAT - 1)

#define XT_STANDARD_TARGET   ""

Referenced by do_command4(), do_command6(), and do_commandarp().

#define XT_TABLE_MAXNAMELEN   32

Referenced by ip6tables_restore_main(), and iptables_restore_main().

#define XT_TARGET_INIT	(		__name,
			__size
	)

Value:

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