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git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - include/uapi/linux/netfilter/x_tables.h
1 #ifndef _UAPI_X_TABLES_H
2 #define _UAPI_X_TABLES_H
3 #include <linux/kernel.h>
4 #include <linux/types.h>
6 #define XT_FUNCTION_MAXNAMELEN 30
7 #define XT_EXTENSION_MAXNAMELEN 29
8 #define XT_TABLE_MAXNAMELEN 32
10 struct xt_entry_match
{
15 /* Used by userspace */
16 char name
[XT_EXTENSION_MAXNAMELEN
];
22 /* Used inside the kernel */
23 struct xt_match
*match
;
30 unsigned char data
[0];
33 struct xt_entry_target
{
38 /* Used by userspace */
39 char name
[XT_EXTENSION_MAXNAMELEN
];
45 /* Used inside the kernel */
46 struct xt_target
*target
;
53 unsigned char data
[0];
56 #define XT_TARGET_INIT(__name, __size) \
59 .target_size = XT_ALIGN(__size), \
64 struct xt_standard_target
{
65 struct xt_entry_target target
;
69 struct xt_error_target
{
70 struct xt_entry_target target
;
71 char errorname
[XT_FUNCTION_MAXNAMELEN
];
74 /* The argument to IPT_SO_GET_REVISION_*. Returns highest revision
75 * kernel supports, if >= revision. */
76 struct xt_get_revision
{
77 char name
[XT_EXTENSION_MAXNAMELEN
];
81 /* CONTINUE verdict for targets */
82 #define XT_CONTINUE 0xFFFFFFFF
84 /* For standard target */
85 #define XT_RETURN (-NF_REPEAT - 1)
87 /* this is a dummy structure to find out the alignment requirement for a struct
88 * containing all the fundamental data types that are used in ipt_entry,
89 * ip6t_entry and arpt_entry. This sucks, and it is a hack. It will be my
90 * personal pleasure to remove it -HW
99 #define XT_ALIGN(s) __ALIGN_KERNEL((s), __alignof__(struct _xt_align))
101 /* Standard return verdict, or do jump. */
102 #define XT_STANDARD_TARGET ""
104 #define XT_ERROR_TARGET "ERROR"
106 #define SET_COUNTER(c,b,p) do { (c).bcnt = (b); (c).pcnt = (p); } while(0)
107 #define ADD_COUNTER(c,b,p) do { (c).bcnt += (b); (c).pcnt += (p); } while(0)
110 __u64 pcnt
, bcnt
; /* Packet and byte counters */
113 /* The argument to IPT_SO_ADD_COUNTERS. */
114 struct xt_counters_info
{
116 char name
[XT_TABLE_MAXNAMELEN
];
118 unsigned int num_counters
;
120 /* The counters (actually `number' of these). */
121 struct xt_counters counters
[0];
124 #define XT_INV_PROTO 0x40 /* Invert the sense of PROTO. */
127 /* fn returns 0 to continue iteration */
128 #define XT_MATCH_ITERATE(type, e, fn, args...) \
132 struct xt_entry_match *__m; \
134 for (__i = sizeof(type); \
135 __i < (e)->target_offset; \
136 __i += __m->u.match_size) { \
137 __m = (void *)e + __i; \
139 __ret = fn(__m , ## args); \
146 /* fn returns 0 to continue iteration */
147 #define XT_ENTRY_ITERATE_CONTINUE(type, entries, size, n, fn, args...) \
149 unsigned int __i, __n; \
153 for (__i = 0, __n = 0; __i < (size); \
154 __i += __entry->next_offset, __n++) { \
155 __entry = (void *)(entries) + __i; \
159 __ret = fn(__entry , ## args); \
166 /* fn returns 0 to continue iteration */
167 #define XT_ENTRY_ITERATE(type, entries, size, fn, args...) \
168 XT_ENTRY_ITERATE_CONTINUE(type, entries, size, 0, fn, args)
170 #endif /* !__KERNEL__ */
172 /* pos is normally a struct ipt_entry/ip6t_entry/etc. */
173 #define xt_entry_foreach(pos, ehead, esize) \
174 for ((pos) = (typeof(pos))(ehead); \
175 (pos) < (typeof(pos))((char *)(ehead) + (esize)); \
176 (pos) = (typeof(pos))((char *)(pos) + (pos)->next_offset))
178 /* can only be xt_entry_match, so no use of typeof here */
179 #define xt_ematch_foreach(pos, entry) \
180 for ((pos) = (struct xt_entry_match *)entry->elems; \
181 (pos) < (struct xt_entry_match *)((char *)(entry) + \
182 (entry)->target_offset); \
183 (pos) = (struct xt_entry_match *)((char *)(pos) + \
184 (pos)->u.match_size))
187 #endif /* _UAPI_X_TABLES_H */