Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 1 | #ifndef _X_TABLES_H |
| 2 | #define _X_TABLES_H |
| 3 | |
| 4 | #define XT_FUNCTION_MAXNAMELEN 30 |
| 5 | #define XT_TABLE_MAXNAMELEN 32 |
| 6 | |
Dmitry Mishin | 1e30a01 | 2006-03-22 13:56:56 -0800 | [diff] [blame] | 7 | struct xt_entry_match |
| 8 | { |
| 9 | union { |
| 10 | struct { |
| 11 | u_int16_t match_size; |
| 12 | |
| 13 | /* Used by userspace */ |
| 14 | char name[XT_FUNCTION_MAXNAMELEN-1]; |
| 15 | |
| 16 | u_int8_t revision; |
| 17 | } user; |
| 18 | struct { |
| 19 | u_int16_t match_size; |
| 20 | |
| 21 | /* Used inside the kernel */ |
| 22 | struct xt_match *match; |
| 23 | } kernel; |
| 24 | |
| 25 | /* Total length */ |
| 26 | u_int16_t match_size; |
| 27 | } u; |
| 28 | |
| 29 | unsigned char data[0]; |
| 30 | }; |
| 31 | |
| 32 | struct xt_entry_target |
| 33 | { |
| 34 | union { |
| 35 | struct { |
| 36 | u_int16_t target_size; |
| 37 | |
| 38 | /* Used by userspace */ |
| 39 | char name[XT_FUNCTION_MAXNAMELEN-1]; |
| 40 | |
| 41 | u_int8_t revision; |
| 42 | } user; |
| 43 | struct { |
| 44 | u_int16_t target_size; |
| 45 | |
| 46 | /* Used inside the kernel */ |
| 47 | struct xt_target *target; |
| 48 | } kernel; |
| 49 | |
| 50 | /* Total length */ |
| 51 | u_int16_t target_size; |
| 52 | } u; |
| 53 | |
| 54 | unsigned char data[0]; |
| 55 | }; |
| 56 | |
Patrick McHardy | 3c2ad46 | 2007-05-10 14:14:16 -0700 | [diff] [blame] | 57 | #define XT_TARGET_INIT(__name, __size) \ |
| 58 | { \ |
| 59 | .target.u.user = { \ |
| 60 | .target_size = XT_ALIGN(__size), \ |
| 61 | .name = __name, \ |
| 62 | }, \ |
| 63 | } |
| 64 | |
Dmitry Mishin | 1e30a01 | 2006-03-22 13:56:56 -0800 | [diff] [blame] | 65 | struct xt_standard_target |
| 66 | { |
| 67 | struct xt_entry_target target; |
| 68 | int verdict; |
| 69 | }; |
| 70 | |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 71 | /* The argument to IPT_SO_GET_REVISION_*. Returns highest revision |
| 72 | * kernel supports, if >= revision. */ |
| 73 | struct xt_get_revision |
| 74 | { |
| 75 | char name[XT_FUNCTION_MAXNAMELEN-1]; |
| 76 | |
| 77 | u_int8_t revision; |
| 78 | }; |
| 79 | |
| 80 | /* CONTINUE verdict for targets */ |
| 81 | #define XT_CONTINUE 0xFFFFFFFF |
| 82 | |
| 83 | /* For standard target */ |
| 84 | #define XT_RETURN (-NF_REPEAT - 1) |
| 85 | |
David S. Miller | 6fbfc96 | 2006-01-20 11:57:07 -0800 | [diff] [blame] | 86 | /* this is a dummy structure to find out the alignment requirement for a struct |
| 87 | * containing all the fundamental data types that are used in ipt_entry, |
| 88 | * ip6t_entry and arpt_entry. This sucks, and it is a hack. It will be my |
| 89 | * personal pleasure to remove it -HW |
| 90 | */ |
| 91 | struct _xt_align |
| 92 | { |
| 93 | u_int8_t u8; |
| 94 | u_int16_t u16; |
| 95 | u_int32_t u32; |
| 96 | u_int64_t u64; |
| 97 | }; |
| 98 | |
| 99 | #define XT_ALIGN(s) (((s) + (__alignof__(struct _xt_align)-1)) \ |
| 100 | & ~(__alignof__(struct _xt_align)-1)) |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 101 | |
| 102 | /* Standard return verdict, or do jump. */ |
| 103 | #define XT_STANDARD_TARGET "" |
| 104 | /* Error verdict. */ |
| 105 | #define XT_ERROR_TARGET "ERROR" |
| 106 | |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 107 | #define SET_COUNTER(c,b,p) do { (c).bcnt = (b); (c).pcnt = (p); } while(0) |
| 108 | #define ADD_COUNTER(c,b,p) do { (c).bcnt += (b); (c).pcnt += (p); } while(0) |
| 109 | |
| 110 | struct xt_counters |
| 111 | { |
| 112 | u_int64_t pcnt, bcnt; /* Packet and byte counters */ |
| 113 | }; |
| 114 | |
| 115 | /* The argument to IPT_SO_ADD_COUNTERS. */ |
| 116 | struct xt_counters_info |
| 117 | { |
| 118 | /* Which table. */ |
| 119 | char name[XT_TABLE_MAXNAMELEN]; |
| 120 | |
| 121 | unsigned int num_counters; |
| 122 | |
| 123 | /* The counters (actually `number' of these). */ |
| 124 | struct xt_counters counters[0]; |
| 125 | }; |
| 126 | |
| 127 | #define XT_INV_PROTO 0x40 /* Invert the sense of PROTO. */ |
| 128 | |
Patrick McHardy | 89c002d | 2007-12-17 21:46:59 -0800 | [diff] [blame] | 129 | /* fn returns 0 to continue iteration */ |
| 130 | #define XT_MATCH_ITERATE(type, e, fn, args...) \ |
| 131 | ({ \ |
| 132 | unsigned int __i; \ |
| 133 | int __ret = 0; \ |
| 134 | struct xt_entry_match *__m; \ |
| 135 | \ |
| 136 | for (__i = sizeof(type); \ |
| 137 | __i < (e)->target_offset; \ |
| 138 | __i += __m->u.match_size) { \ |
| 139 | __m = (void *)e + __i; \ |
| 140 | \ |
| 141 | __ret = fn(__m , ## args); \ |
| 142 | if (__ret != 0) \ |
| 143 | break; \ |
| 144 | } \ |
| 145 | __ret; \ |
| 146 | }) |
| 147 | |
| 148 | /* fn returns 0 to continue iteration */ |
| 149 | #define XT_ENTRY_ITERATE_CONTINUE(type, entries, size, n, fn, args...) \ |
| 150 | ({ \ |
| 151 | unsigned int __i, __n; \ |
| 152 | int __ret = 0; \ |
| 153 | type *__entry; \ |
| 154 | \ |
| 155 | for (__i = 0, __n = 0; __i < (size); \ |
| 156 | __i += __entry->next_offset, __n++) { \ |
| 157 | __entry = (void *)(entries) + __i; \ |
| 158 | if (__n < n) \ |
| 159 | continue; \ |
| 160 | \ |
| 161 | __ret = fn(__entry , ## args); \ |
| 162 | if (__ret != 0) \ |
| 163 | break; \ |
| 164 | } \ |
| 165 | __ret; \ |
| 166 | }) |
| 167 | |
| 168 | /* fn returns 0 to continue iteration */ |
| 169 | #define XT_ENTRY_ITERATE(type, entries, size, fn, args...) \ |
| 170 | XT_ENTRY_ITERATE_CONTINUE(type, entries, size, 0, fn, args) |
| 171 | |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 172 | #ifdef __KERNEL__ |
| 173 | |
| 174 | #include <linux/netdevice.h> |
| 175 | |
Jan Engelhardt | f7108a2 | 2008-10-08 11:35:18 +0200 | [diff] [blame] | 176 | /** |
| 177 | * struct xt_match_param - parameters for match extensions' match functions |
| 178 | * |
| 179 | * @in: input netdevice |
| 180 | * @out: output netdevice |
| 181 | * @match: struct xt_match through which this function was invoked |
| 182 | * @matchinfo: per-match data |
| 183 | * @fragoff: packet is a fragment, this is the data offset |
| 184 | * @thoff: position of transport header relative to skb->data |
| 185 | * @hotdrop: drop packet if we had inspection problems |
| 186 | */ |
| 187 | struct xt_match_param { |
| 188 | const struct net_device *in, *out; |
| 189 | const struct xt_match *match; |
| 190 | const void *matchinfo; |
| 191 | int fragoff; |
| 192 | unsigned int thoff; |
| 193 | bool *hotdrop; |
| 194 | }; |
| 195 | |
Jan Engelhardt | 9b4fce7 | 2008-10-08 11:35:18 +0200 | [diff] [blame^] | 196 | /** |
| 197 | * struct xt_mtchk_param - parameters for match extensions' |
| 198 | * checkentry functions |
| 199 | * |
| 200 | * @table: table the rule is tried to be inserted into |
| 201 | * @entryinfo: the family-specific rule data |
| 202 | * (struct ipt_ip, ip6t_ip, ebt_entry) |
| 203 | * @match: struct xt_match through which this function was invoked |
| 204 | * @matchinfo: per-match data |
| 205 | * @hook_mask: via which hooks the new rule is reachable |
| 206 | */ |
| 207 | struct xt_mtchk_param { |
| 208 | const char *table; |
| 209 | const void *entryinfo; |
| 210 | const struct xt_match *match; |
| 211 | void *matchinfo; |
| 212 | unsigned int hook_mask; |
| 213 | }; |
| 214 | |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 215 | struct xt_match |
| 216 | { |
| 217 | struct list_head list; |
| 218 | |
| 219 | const char name[XT_FUNCTION_MAXNAMELEN-1]; |
| 220 | |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 221 | /* Return true or false: return FALSE and set *hotdrop = 1 to |
| 222 | force immediate packet drop. */ |
| 223 | /* Arguments changed since 2.6.9, as this must now handle |
| 224 | non-linear skb, using skb_header_pointer and |
| 225 | skb_ip_make_writable. */ |
Jan Engelhardt | 1d93a9c | 2007-07-07 22:15:35 -0700 | [diff] [blame] | 226 | bool (*match)(const struct sk_buff *skb, |
Jan Engelhardt | f7108a2 | 2008-10-08 11:35:18 +0200 | [diff] [blame] | 227 | const struct xt_match_param *); |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 228 | |
| 229 | /* Called when user tries to insert an entry of this type. */ |
Jan Engelhardt | 9b4fce7 | 2008-10-08 11:35:18 +0200 | [diff] [blame^] | 230 | bool (*checkentry)(const struct xt_mtchk_param *); |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 231 | |
| 232 | /* Called when entry of this type deleted. */ |
Patrick McHardy | efa7416 | 2006-08-22 00:36:37 -0700 | [diff] [blame] | 233 | void (*destroy)(const struct xt_match *match, void *matchinfo); |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 234 | |
Dmitry Mishin | 2722971 | 2006-04-01 02:25:19 -0800 | [diff] [blame] | 235 | /* Called when userspace align differs from kernel space one */ |
Patrick McHardy | 9fa492c | 2006-09-20 12:05:37 -0700 | [diff] [blame] | 236 | void (*compat_from_user)(void *dst, void *src); |
| 237 | int (*compat_to_user)(void __user *dst, void *src); |
Dmitry Mishin | 2722971 | 2006-04-01 02:25:19 -0800 | [diff] [blame] | 238 | |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 239 | /* Set this to THIS_MODULE if you are a module, otherwise NULL */ |
| 240 | struct module *me; |
Patrick McHardy | 37f9f73 | 2006-03-20 17:59:06 -0800 | [diff] [blame] | 241 | |
Patrick McHardy | 91270cf | 2006-08-22 00:43:38 -0700 | [diff] [blame] | 242 | /* Free to use by each match */ |
| 243 | unsigned long data; |
| 244 | |
Jan Engelhardt | ecb6f85 | 2008-01-31 03:54:47 -0800 | [diff] [blame] | 245 | const char *table; |
Patrick McHardy | 37f9f73 | 2006-03-20 17:59:06 -0800 | [diff] [blame] | 246 | unsigned int matchsize; |
Patrick McHardy | 9fa492c | 2006-09-20 12:05:37 -0700 | [diff] [blame] | 247 | unsigned int compatsize; |
Patrick McHardy | 37f9f73 | 2006-03-20 17:59:06 -0800 | [diff] [blame] | 248 | unsigned int hooks; |
| 249 | unsigned short proto; |
Patrick McHardy | c4b8851 | 2006-03-20 18:03:40 -0800 | [diff] [blame] | 250 | |
| 251 | unsigned short family; |
Patrick McHardy | 37f9f73 | 2006-03-20 17:59:06 -0800 | [diff] [blame] | 252 | u_int8_t revision; |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 253 | }; |
| 254 | |
| 255 | /* Registration hooks for targets. */ |
| 256 | struct xt_target |
| 257 | { |
| 258 | struct list_head list; |
| 259 | |
| 260 | const char name[XT_FUNCTION_MAXNAMELEN-1]; |
| 261 | |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 262 | /* Returns verdict. Argument order changed since 2.6.9, as this |
| 263 | must now handle non-linear skbs, using skb_copy_bits and |
| 264 | skb_ip_make_writable. */ |
Herbert Xu | 3db05fe | 2007-10-15 00:53:15 -0700 | [diff] [blame] | 265 | unsigned int (*target)(struct sk_buff *skb, |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 266 | const struct net_device *in, |
| 267 | const struct net_device *out, |
| 268 | unsigned int hooknum, |
Patrick McHardy | 1c52483 | 2006-03-20 18:02:15 -0800 | [diff] [blame] | 269 | const struct xt_target *target, |
Patrick McHardy | fe1cb10 | 2006-08-22 00:35:47 -0700 | [diff] [blame] | 270 | const void *targinfo); |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 271 | |
| 272 | /* Called when user tries to insert an entry of this type: |
| 273 | hook_mask is a bitmask of hooks from which it can be |
| 274 | called. */ |
| 275 | /* Should return true or false. */ |
Jan Engelhardt | e1931b7 | 2007-07-07 22:16:26 -0700 | [diff] [blame] | 276 | bool (*checkentry)(const char *tablename, |
| 277 | const void *entry, |
| 278 | const struct xt_target *target, |
| 279 | void *targinfo, |
| 280 | unsigned int hook_mask); |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 281 | |
| 282 | /* Called when entry of this type deleted. */ |
Patrick McHardy | efa7416 | 2006-08-22 00:36:37 -0700 | [diff] [blame] | 283 | void (*destroy)(const struct xt_target *target, void *targinfo); |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 284 | |
Dmitry Mishin | 2722971 | 2006-04-01 02:25:19 -0800 | [diff] [blame] | 285 | /* Called when userspace align differs from kernel space one */ |
Patrick McHardy | 9fa492c | 2006-09-20 12:05:37 -0700 | [diff] [blame] | 286 | void (*compat_from_user)(void *dst, void *src); |
| 287 | int (*compat_to_user)(void __user *dst, void *src); |
Dmitry Mishin | 2722971 | 2006-04-01 02:25:19 -0800 | [diff] [blame] | 288 | |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 289 | /* Set this to THIS_MODULE if you are a module, otherwise NULL */ |
| 290 | struct module *me; |
Patrick McHardy | 37f9f73 | 2006-03-20 17:59:06 -0800 | [diff] [blame] | 291 | |
Jan Engelhardt | ecb6f85 | 2008-01-31 03:54:47 -0800 | [diff] [blame] | 292 | const char *table; |
Patrick McHardy | 37f9f73 | 2006-03-20 17:59:06 -0800 | [diff] [blame] | 293 | unsigned int targetsize; |
Patrick McHardy | 9fa492c | 2006-09-20 12:05:37 -0700 | [diff] [blame] | 294 | unsigned int compatsize; |
Patrick McHardy | 37f9f73 | 2006-03-20 17:59:06 -0800 | [diff] [blame] | 295 | unsigned int hooks; |
| 296 | unsigned short proto; |
Patrick McHardy | c4b8851 | 2006-03-20 18:03:40 -0800 | [diff] [blame] | 297 | |
| 298 | unsigned short family; |
Patrick McHardy | 37f9f73 | 2006-03-20 17:59:06 -0800 | [diff] [blame] | 299 | u_int8_t revision; |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 300 | }; |
| 301 | |
| 302 | /* Furniture shopping... */ |
| 303 | struct xt_table |
| 304 | { |
| 305 | struct list_head list; |
| 306 | |
| 307 | /* A unique name... */ |
Jan Engelhardt | ecb6f85 | 2008-01-31 03:54:47 -0800 | [diff] [blame] | 308 | const char name[XT_TABLE_MAXNAMELEN]; |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 309 | |
| 310 | /* What hooks you will enter on */ |
| 311 | unsigned int valid_hooks; |
| 312 | |
| 313 | /* Lock for the curtain */ |
| 314 | rwlock_t lock; |
| 315 | |
| 316 | /* Man behind the curtain... */ |
| 317 | //struct ip6t_table_info *private; |
| 318 | void *private; |
| 319 | |
| 320 | /* Set this to THIS_MODULE if you are a module, otherwise NULL */ |
| 321 | struct module *me; |
| 322 | |
Jan Engelhardt | 76108ce | 2008-10-08 11:35:00 +0200 | [diff] [blame] | 323 | u_int8_t af; /* address/protocol family */ |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 324 | }; |
| 325 | |
| 326 | #include <linux/netfilter_ipv4.h> |
| 327 | |
| 328 | /* The table itself */ |
| 329 | struct xt_table_info |
| 330 | { |
| 331 | /* Size per table */ |
| 332 | unsigned int size; |
| 333 | /* Number of entries: FIXME. --RR */ |
| 334 | unsigned int number; |
| 335 | /* Initial number of entries. Needed for module usage count */ |
| 336 | unsigned int initial_entries; |
| 337 | |
| 338 | /* Entry points and underflows */ |
Patrick McHardy | 6e23ae2 | 2007-11-19 18:53:30 -0800 | [diff] [blame] | 339 | unsigned int hook_entry[NF_INET_NUMHOOKS]; |
| 340 | unsigned int underflow[NF_INET_NUMHOOKS]; |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 341 | |
| 342 | /* ipt_entry tables: one per CPU */ |
Eric Dumazet | 259d4e4 | 2007-12-04 23:24:56 -0800 | [diff] [blame] | 343 | /* Note : this field MUST be the last one, see XT_TABLE_INFO_SZ */ |
| 344 | char *entries[1]; |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 345 | }; |
| 346 | |
Eric Dumazet | 259d4e4 | 2007-12-04 23:24:56 -0800 | [diff] [blame] | 347 | #define XT_TABLE_INFO_SZ (offsetof(struct xt_table_info, entries) \ |
| 348 | + nr_cpu_ids * sizeof(char *)) |
Pablo Neira Ayuso | a45049c | 2006-03-22 13:55:40 -0800 | [diff] [blame] | 349 | extern int xt_register_target(struct xt_target *target); |
| 350 | extern void xt_unregister_target(struct xt_target *target); |
Patrick McHardy | 52d9c42 | 2006-08-22 00:33:45 -0700 | [diff] [blame] | 351 | extern int xt_register_targets(struct xt_target *target, unsigned int n); |
| 352 | extern void xt_unregister_targets(struct xt_target *target, unsigned int n); |
| 353 | |
Pablo Neira Ayuso | a45049c | 2006-03-22 13:55:40 -0800 | [diff] [blame] | 354 | extern int xt_register_match(struct xt_match *target); |
| 355 | extern void xt_unregister_match(struct xt_match *target); |
Patrick McHardy | 52d9c42 | 2006-08-22 00:33:45 -0700 | [diff] [blame] | 356 | extern int xt_register_matches(struct xt_match *match, unsigned int n); |
| 357 | extern void xt_unregister_matches(struct xt_match *match, unsigned int n); |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 358 | |
Jan Engelhardt | 9b4fce7 | 2008-10-08 11:35:18 +0200 | [diff] [blame^] | 359 | extern int xt_check_match(struct xt_mtchk_param *, u_int8_t family, |
| 360 | unsigned int size, u_int8_t proto, bool inv_proto); |
Patrick McHardy | 37f9f73 | 2006-03-20 17:59:06 -0800 | [diff] [blame] | 361 | extern int xt_check_target(const struct xt_target *target, unsigned short family, |
| 362 | unsigned int size, const char *table, unsigned int hook, |
Jan Engelhardt | 367c679 | 2008-10-08 11:35:17 +0200 | [diff] [blame] | 363 | unsigned short proto, int inv_proto, |
| 364 | const void *entry, void *targinfo); |
Patrick McHardy | 37f9f73 | 2006-03-20 17:59:06 -0800 | [diff] [blame] | 365 | |
Alexey Dobriyan | 8d87005 | 2008-01-31 04:02:13 -0800 | [diff] [blame] | 366 | extern struct xt_table *xt_register_table(struct net *net, |
| 367 | struct xt_table *table, |
Alexey Dobriyan | a98da11 | 2008-01-31 04:01:49 -0800 | [diff] [blame] | 368 | struct xt_table_info *bootstrap, |
| 369 | struct xt_table_info *newinfo); |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 370 | extern void *xt_unregister_table(struct xt_table *table); |
| 371 | |
| 372 | extern struct xt_table_info *xt_replace_table(struct xt_table *table, |
| 373 | unsigned int num_counters, |
| 374 | struct xt_table_info *newinfo, |
| 375 | int *error); |
| 376 | |
Jan Engelhardt | 76108ce | 2008-10-08 11:35:00 +0200 | [diff] [blame] | 377 | extern struct xt_match *xt_find_match(u8 af, const char *name, u8 revision); |
| 378 | extern struct xt_target *xt_find_target(u8 af, const char *name, u8 revision); |
| 379 | extern struct xt_target *xt_request_find_target(u8 af, const char *name, |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 380 | u8 revision); |
Jan Engelhardt | 76108ce | 2008-10-08 11:35:00 +0200 | [diff] [blame] | 381 | extern int xt_find_revision(u8 af, const char *name, u8 revision, |
| 382 | int target, int *err); |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 383 | |
Jan Engelhardt | 76108ce | 2008-10-08 11:35:00 +0200 | [diff] [blame] | 384 | extern struct xt_table *xt_find_table_lock(struct net *net, u_int8_t af, |
Alexey Dobriyan | 8d87005 | 2008-01-31 04:02:13 -0800 | [diff] [blame] | 385 | const char *name); |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 386 | extern void xt_table_unlock(struct xt_table *t); |
| 387 | |
Jan Engelhardt | 76108ce | 2008-10-08 11:35:00 +0200 | [diff] [blame] | 388 | extern int xt_proto_init(struct net *net, u_int8_t af); |
| 389 | extern void xt_proto_fini(struct net *net, u_int8_t af); |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 390 | |
| 391 | extern struct xt_table_info *xt_alloc_table_info(unsigned int size); |
| 392 | extern void xt_free_table_info(struct xt_table_info *info); |
| 393 | |
Dmitry Mishin | 2722971 | 2006-04-01 02:25:19 -0800 | [diff] [blame] | 394 | #ifdef CONFIG_COMPAT |
| 395 | #include <net/compat.h> |
| 396 | |
| 397 | struct compat_xt_entry_match |
| 398 | { |
| 399 | union { |
| 400 | struct { |
| 401 | u_int16_t match_size; |
| 402 | char name[XT_FUNCTION_MAXNAMELEN - 1]; |
| 403 | u_int8_t revision; |
| 404 | } user; |
Patrick McHardy | 46c5ea3c | 2006-05-02 05:12:22 +0200 | [diff] [blame] | 405 | struct { |
| 406 | u_int16_t match_size; |
| 407 | compat_uptr_t match; |
| 408 | } kernel; |
Dmitry Mishin | 2722971 | 2006-04-01 02:25:19 -0800 | [diff] [blame] | 409 | u_int16_t match_size; |
| 410 | } u; |
| 411 | unsigned char data[0]; |
| 412 | }; |
| 413 | |
| 414 | struct compat_xt_entry_target |
| 415 | { |
| 416 | union { |
| 417 | struct { |
| 418 | u_int16_t target_size; |
| 419 | char name[XT_FUNCTION_MAXNAMELEN - 1]; |
| 420 | u_int8_t revision; |
| 421 | } user; |
Patrick McHardy | 46c5ea3c | 2006-05-02 05:12:22 +0200 | [diff] [blame] | 422 | struct { |
| 423 | u_int16_t target_size; |
| 424 | compat_uptr_t target; |
| 425 | } kernel; |
Dmitry Mishin | 2722971 | 2006-04-01 02:25:19 -0800 | [diff] [blame] | 426 | u_int16_t target_size; |
| 427 | } u; |
| 428 | unsigned char data[0]; |
| 429 | }; |
| 430 | |
| 431 | /* FIXME: this works only on 32 bit tasks |
| 432 | * need to change whole approach in order to calculate align as function of |
| 433 | * current task alignment */ |
| 434 | |
| 435 | struct compat_xt_counters |
| 436 | { |
Patrick McHardy | 55fe586 | 2006-04-24 17:16:28 -0700 | [diff] [blame] | 437 | #if defined(CONFIG_X86_64) || defined(CONFIG_IA64) |
Dmitry Mishin | 2722971 | 2006-04-01 02:25:19 -0800 | [diff] [blame] | 438 | u_int32_t cnt[4]; |
Patrick McHardy | 55fe586 | 2006-04-24 17:16:28 -0700 | [diff] [blame] | 439 | #else |
| 440 | u_int64_t cnt[2]; |
| 441 | #endif |
Dmitry Mishin | 2722971 | 2006-04-01 02:25:19 -0800 | [diff] [blame] | 442 | }; |
| 443 | |
| 444 | struct compat_xt_counters_info |
| 445 | { |
| 446 | char name[XT_TABLE_MAXNAMELEN]; |
| 447 | compat_uint_t num_counters; |
| 448 | struct compat_xt_counters counters[0]; |
| 449 | }; |
| 450 | |
| 451 | #define COMPAT_XT_ALIGN(s) (((s) + (__alignof__(struct compat_xt_counters)-1)) \ |
| 452 | & ~(__alignof__(struct compat_xt_counters)-1)) |
| 453 | |
Jan Engelhardt | 76108ce | 2008-10-08 11:35:00 +0200 | [diff] [blame] | 454 | extern void xt_compat_lock(u_int8_t af); |
| 455 | extern void xt_compat_unlock(u_int8_t af); |
Patrick McHardy | 9fa492c | 2006-09-20 12:05:37 -0700 | [diff] [blame] | 456 | |
Jan Engelhardt | 76108ce | 2008-10-08 11:35:00 +0200 | [diff] [blame] | 457 | extern int xt_compat_add_offset(u_int8_t af, unsigned int offset, short delta); |
| 458 | extern void xt_compat_flush_offsets(u_int8_t af); |
| 459 | extern short xt_compat_calc_jump(u_int8_t af, unsigned int offset); |
Patrick McHardy | b386d9f | 2007-12-17 21:47:48 -0800 | [diff] [blame] | 460 | |
Jan Engelhardt | 5452e42 | 2008-04-14 11:15:35 +0200 | [diff] [blame] | 461 | extern int xt_compat_match_offset(const struct xt_match *match); |
Patrick McHardy | 8956695 | 2007-12-17 21:46:40 -0800 | [diff] [blame] | 462 | extern int xt_compat_match_from_user(struct xt_entry_match *m, |
Patrick McHardy | b0a6363 | 2008-01-31 04:10:18 -0800 | [diff] [blame] | 463 | void **dstptr, unsigned int *size); |
Patrick McHardy | 9fa492c | 2006-09-20 12:05:37 -0700 | [diff] [blame] | 464 | extern int xt_compat_match_to_user(struct xt_entry_match *m, |
Patrick McHardy | b0a6363 | 2008-01-31 04:10:18 -0800 | [diff] [blame] | 465 | void __user **dstptr, unsigned int *size); |
Patrick McHardy | 9fa492c | 2006-09-20 12:05:37 -0700 | [diff] [blame] | 466 | |
Jan Engelhardt | 5452e42 | 2008-04-14 11:15:35 +0200 | [diff] [blame] | 467 | extern int xt_compat_target_offset(const struct xt_target *target); |
Patrick McHardy | 9fa492c | 2006-09-20 12:05:37 -0700 | [diff] [blame] | 468 | extern void xt_compat_target_from_user(struct xt_entry_target *t, |
Patrick McHardy | b0a6363 | 2008-01-31 04:10:18 -0800 | [diff] [blame] | 469 | void **dstptr, unsigned int *size); |
Patrick McHardy | 9fa492c | 2006-09-20 12:05:37 -0700 | [diff] [blame] | 470 | extern int xt_compat_target_to_user(struct xt_entry_target *t, |
Patrick McHardy | b0a6363 | 2008-01-31 04:10:18 -0800 | [diff] [blame] | 471 | void __user **dstptr, unsigned int *size); |
Dmitry Mishin | 2722971 | 2006-04-01 02:25:19 -0800 | [diff] [blame] | 472 | |
| 473 | #endif /* CONFIG_COMPAT */ |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 474 | #endif /* __KERNEL__ */ |
| 475 | |
| 476 | #endif /* _X_TABLES_H */ |