1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu>
3 * Patrick Schaaf <bof@bof.de>
4 * Martin Josefsson <gandalf@wlug.westbo.se>
5 * Copyright (C) 2003-2013 Jozsef Kadlecsik <kadlec@netfilter.org>
6 */
7
8 /* Kernel module which implements the set match and SET target
9 * for netfilter/iptables.
10 */
11
12 #include <linux/module.h>
13 #include <linux/skbuff.h>
14
15 #include <linux/netfilter/x_tables.h>
16 #include <linux/netfilter/ipset/ip_set.h>
17 #include <uapi/linux/netfilter/xt_set.h>
18
19 MODULE_LICENSE("GPL");
20 MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@netfilter.org>");
21 MODULE_DESCRIPTION("Xtables: IP set match and target module");
22 MODULE_ALIAS("xt_SET");
23 MODULE_ALIAS("ipt_set");
24 MODULE_ALIAS("ip6t_set");
25 MODULE_ALIAS("ipt_SET");
26 MODULE_ALIAS("ip6t_SET");
27
28 static inline int
match_set(ip_set_id_t index,const struct sk_buff * skb,const struct xt_action_param * par,struct ip_set_adt_opt * opt,int inv)29 match_set(ip_set_id_t index, const struct sk_buff *skb,
30 const struct xt_action_param *par,
31 struct ip_set_adt_opt *opt, int inv)
32 {
33 if (ip_set_test(index, skb, par, opt))
34 inv = !inv;
35 return inv;
36 }
37
38 #define ADT_OPT(n, f, d, fs, cfs, t, p, b, po, bo) \
39 struct ip_set_adt_opt n = { \
40 .family = f, \
41 .dim = d, \
42 .flags = fs, \
43 .cmdflags = cfs, \
44 .ext.timeout = t, \
45 .ext.packets = p, \
46 .ext.bytes = b, \
47 .ext.packets_op = po, \
48 .ext.bytes_op = bo, \
49 }
50
51 /* Revision 0 interface: backward compatible with netfilter/iptables */
52
53 static bool
set_match_v0(const struct sk_buff * skb,struct xt_action_param * par)54 set_match_v0(const struct sk_buff *skb, struct xt_action_param *par)
55 {
56 const struct xt_set_info_match_v0 *info = par->matchinfo;
57
58 ADT_OPT(opt, xt_family(par), info->match_set.u.compat.dim,
59 info->match_set.u.compat.flags, 0, UINT_MAX,
60 0, 0, 0, 0);
61
62 return match_set(info->match_set.index, skb, par, &opt,
63 info->match_set.u.compat.flags & IPSET_INV_MATCH);
64 }
65
66 static void
compat_flags(struct xt_set_info_v0 * info)67 compat_flags(struct xt_set_info_v0 *info)
68 {
69 u_int8_t i;
70
71 /* Fill out compatibility data according to enum ip_set_kopt */
72 info->u.compat.dim = IPSET_DIM_ZERO;
73 if (info->u.flags[0] & IPSET_MATCH_INV)
74 info->u.compat.flags |= IPSET_INV_MATCH;
75 for (i = 0; i < IPSET_DIM_MAX - 1 && info->u.flags[i]; i++) {
76 info->u.compat.dim++;
77 if (info->u.flags[i] & IPSET_SRC)
78 info->u.compat.flags |= (1 << info->u.compat.dim);
79 }
80 }
81
82 static int
set_match_v0_checkentry(const struct xt_mtchk_param * par)83 set_match_v0_checkentry(const struct xt_mtchk_param *par)
84 {
85 struct xt_set_info_match_v0 *info = par->matchinfo;
86 ip_set_id_t index;
87
88 index = ip_set_nfnl_get_byindex(par->net, info->match_set.index);
89
90 if (index == IPSET_INVALID_ID) {
91 pr_info_ratelimited("Cannot find set identified by id %u to match\n",
92 info->match_set.index);
93 return -ENOENT;
94 }
95 if (info->match_set.u.flags[IPSET_DIM_MAX - 1] != 0) {
96 pr_info_ratelimited("set match dimension is over the limit!\n");
97 ip_set_nfnl_put(par->net, info->match_set.index);
98 return -ERANGE;
99 }
100
101 /* Fill out compatibility data */
102 compat_flags(&info->match_set);
103
104 return 0;
105 }
106
107 static void
set_match_v0_destroy(const struct xt_mtdtor_param * par)108 set_match_v0_destroy(const struct xt_mtdtor_param *par)
109 {
110 struct xt_set_info_match_v0 *info = par->matchinfo;
111
112 ip_set_nfnl_put(par->net, info->match_set.index);
113 }
114
115 /* Revision 1 match */
116
117 static bool
set_match_v1(const struct sk_buff * skb,struct xt_action_param * par)118 set_match_v1(const struct sk_buff *skb, struct xt_action_param *par)
119 {
120 const struct xt_set_info_match_v1 *info = par->matchinfo;
121
122 ADT_OPT(opt, xt_family(par), info->match_set.dim,
123 info->match_set.flags, 0, UINT_MAX,
124 0, 0, 0, 0);
125
126 if (opt.flags & IPSET_RETURN_NOMATCH)
127 opt.cmdflags |= IPSET_FLAG_RETURN_NOMATCH;
128
129 return match_set(info->match_set.index, skb, par, &opt,
130 info->match_set.flags & IPSET_INV_MATCH);
131 }
132
133 static int
set_match_v1_checkentry(const struct xt_mtchk_param * par)134 set_match_v1_checkentry(const struct xt_mtchk_param *par)
135 {
136 struct xt_set_info_match_v1 *info = par->matchinfo;
137 ip_set_id_t index;
138
139 index = ip_set_nfnl_get_byindex(par->net, info->match_set.index);
140
141 if (index == IPSET_INVALID_ID) {
142 pr_info_ratelimited("Cannot find set identified by id %u to match\n",
143 info->match_set.index);
144 return -ENOENT;
145 }
146 if (info->match_set.dim > IPSET_DIM_MAX) {
147 pr_info_ratelimited("set match dimension is over the limit!\n");
148 ip_set_nfnl_put(par->net, info->match_set.index);
149 return -ERANGE;
150 }
151
152 return 0;
153 }
154
155 static void
set_match_v1_destroy(const struct xt_mtdtor_param * par)156 set_match_v1_destroy(const struct xt_mtdtor_param *par)
157 {
158 struct xt_set_info_match_v1 *info = par->matchinfo;
159
160 ip_set_nfnl_put(par->net, info->match_set.index);
161 }
162
163 /* Revision 3 match */
164
165 static bool
set_match_v3(const struct sk_buff * skb,struct xt_action_param * par)166 set_match_v3(const struct sk_buff *skb, struct xt_action_param *par)
167 {
168 const struct xt_set_info_match_v3 *info = par->matchinfo;
169
170 ADT_OPT(opt, xt_family(par), info->match_set.dim,
171 info->match_set.flags, info->flags, UINT_MAX,
172 info->packets.value, info->bytes.value,
173 info->packets.op, info->bytes.op);
174
175 if (info->packets.op != IPSET_COUNTER_NONE ||
176 info->bytes.op != IPSET_COUNTER_NONE)
177 opt.cmdflags |= IPSET_FLAG_MATCH_COUNTERS;
178
179 return match_set(info->match_set.index, skb, par, &opt,
180 info->match_set.flags & IPSET_INV_MATCH);
181 }
182
183 #define set_match_v3_checkentry set_match_v1_checkentry
184 #define set_match_v3_destroy set_match_v1_destroy
185
186 /* Revision 4 match */
187
188 static bool
set_match_v4(const struct sk_buff * skb,struct xt_action_param * par)189 set_match_v4(const struct sk_buff *skb, struct xt_action_param *par)
190 {
191 const struct xt_set_info_match_v4 *info = par->matchinfo;
192
193 ADT_OPT(opt, xt_family(par), info->match_set.dim,
194 info->match_set.flags, info->flags, UINT_MAX,
195 info->packets.value, info->bytes.value,
196 info->packets.op, info->bytes.op);
197
198 if (info->packets.op != IPSET_COUNTER_NONE ||
199 info->bytes.op != IPSET_COUNTER_NONE)
200 opt.cmdflags |= IPSET_FLAG_MATCH_COUNTERS;
201
202 return match_set(info->match_set.index, skb, par, &opt,
203 info->match_set.flags & IPSET_INV_MATCH);
204 }
205
206 #define set_match_v4_checkentry set_match_v1_checkentry
207 #define set_match_v4_destroy set_match_v1_destroy
208
209 /* Revision 0 interface: backward compatible with netfilter/iptables */
210
211 static unsigned int
set_target_v0(struct sk_buff * skb,const struct xt_action_param * par)212 set_target_v0(struct sk_buff *skb, const struct xt_action_param *par)
213 {
214 const struct xt_set_info_target_v0 *info = par->targinfo;
215
216 ADT_OPT(add_opt, xt_family(par), info->add_set.u.compat.dim,
217 info->add_set.u.compat.flags, 0, UINT_MAX,
218 0, 0, 0, 0);
219 ADT_OPT(del_opt, xt_family(par), info->del_set.u.compat.dim,
220 info->del_set.u.compat.flags, 0, UINT_MAX,
221 0, 0, 0, 0);
222
223 if (info->add_set.index != IPSET_INVALID_ID)
224 ip_set_add(info->add_set.index, skb, par, &add_opt);
225 if (info->del_set.index != IPSET_INVALID_ID)
226 ip_set_del(info->del_set.index, skb, par, &del_opt);
227
228 return XT_CONTINUE;
229 }
230
231 static int
set_target_v0_checkentry(const struct xt_tgchk_param * par)232 set_target_v0_checkentry(const struct xt_tgchk_param *par)
233 {
234 struct xt_set_info_target_v0 *info = par->targinfo;
235 ip_set_id_t index;
236
237 if (info->add_set.index != IPSET_INVALID_ID) {
238 index = ip_set_nfnl_get_byindex(par->net, info->add_set.index);
239 if (index == IPSET_INVALID_ID) {
240 pr_info_ratelimited("Cannot find add_set index %u as target\n",
241 info->add_set.index);
242 return -ENOENT;
243 }
244 }
245
246 if (info->del_set.index != IPSET_INVALID_ID) {
247 index = ip_set_nfnl_get_byindex(par->net, info->del_set.index);
248 if (index == IPSET_INVALID_ID) {
249 pr_info_ratelimited("Cannot find del_set index %u as target\n",
250 info->del_set.index);
251 if (info->add_set.index != IPSET_INVALID_ID)
252 ip_set_nfnl_put(par->net, info->add_set.index);
253 return -ENOENT;
254 }
255 }
256 if (info->add_set.u.flags[IPSET_DIM_MAX - 1] != 0 ||
257 info->del_set.u.flags[IPSET_DIM_MAX - 1] != 0) {
258 pr_info_ratelimited("SET target dimension over the limit!\n");
259 if (info->add_set.index != IPSET_INVALID_ID)
260 ip_set_nfnl_put(par->net, info->add_set.index);
261 if (info->del_set.index != IPSET_INVALID_ID)
262 ip_set_nfnl_put(par->net, info->del_set.index);
263 return -ERANGE;
264 }
265
266 /* Fill out compatibility data */
267 compat_flags(&info->add_set);
268 compat_flags(&info->del_set);
269
270 return 0;
271 }
272
273 static void
set_target_v0_destroy(const struct xt_tgdtor_param * par)274 set_target_v0_destroy(const struct xt_tgdtor_param *par)
275 {
276 const struct xt_set_info_target_v0 *info = par->targinfo;
277
278 if (info->add_set.index != IPSET_INVALID_ID)
279 ip_set_nfnl_put(par->net, info->add_set.index);
280 if (info->del_set.index != IPSET_INVALID_ID)
281 ip_set_nfnl_put(par->net, info->del_set.index);
282 }
283
284 /* Revision 1 target */
285
286 static unsigned int
set_target_v1(struct sk_buff * skb,const struct xt_action_param * par)287 set_target_v1(struct sk_buff *skb, const struct xt_action_param *par)
288 {
289 const struct xt_set_info_target_v1 *info = par->targinfo;
290
291 ADT_OPT(add_opt, xt_family(par), info->add_set.dim,
292 info->add_set.flags, 0, UINT_MAX,
293 0, 0, 0, 0);
294 ADT_OPT(del_opt, xt_family(par), info->del_set.dim,
295 info->del_set.flags, 0, UINT_MAX,
296 0, 0, 0, 0);
297
298 if (info->add_set.index != IPSET_INVALID_ID)
299 ip_set_add(info->add_set.index, skb, par, &add_opt);
300 if (info->del_set.index != IPSET_INVALID_ID)
301 ip_set_del(info->del_set.index, skb, par, &del_opt);
302
303 return XT_CONTINUE;
304 }
305
306 static int
set_target_v1_checkentry(const struct xt_tgchk_param * par)307 set_target_v1_checkentry(const struct xt_tgchk_param *par)
308 {
309 const struct xt_set_info_target_v1 *info = par->targinfo;
310 ip_set_id_t index;
311
312 if (info->add_set.index != IPSET_INVALID_ID) {
313 index = ip_set_nfnl_get_byindex(par->net, info->add_set.index);
314 if (index == IPSET_INVALID_ID) {
315 pr_info_ratelimited("Cannot find add_set index %u as target\n",
316 info->add_set.index);
317 return -ENOENT;
318 }
319 }
320
321 if (info->del_set.index != IPSET_INVALID_ID) {
322 index = ip_set_nfnl_get_byindex(par->net, info->del_set.index);
323 if (index == IPSET_INVALID_ID) {
324 pr_info_ratelimited("Cannot find del_set index %u as target\n",
325 info->del_set.index);
326 if (info->add_set.index != IPSET_INVALID_ID)
327 ip_set_nfnl_put(par->net, info->add_set.index);
328 return -ENOENT;
329 }
330 }
331 if (info->add_set.dim > IPSET_DIM_MAX ||
332 info->del_set.dim > IPSET_DIM_MAX) {
333 pr_info_ratelimited("SET target dimension over the limit!\n");
334 if (info->add_set.index != IPSET_INVALID_ID)
335 ip_set_nfnl_put(par->net, info->add_set.index);
336 if (info->del_set.index != IPSET_INVALID_ID)
337 ip_set_nfnl_put(par->net, info->del_set.index);
338 return -ERANGE;
339 }
340
341 return 0;
342 }
343
344 static void
set_target_v1_destroy(const struct xt_tgdtor_param * par)345 set_target_v1_destroy(const struct xt_tgdtor_param *par)
346 {
347 const struct xt_set_info_target_v1 *info = par->targinfo;
348
349 if (info->add_set.index != IPSET_INVALID_ID)
350 ip_set_nfnl_put(par->net, info->add_set.index);
351 if (info->del_set.index != IPSET_INVALID_ID)
352 ip_set_nfnl_put(par->net, info->del_set.index);
353 }
354
355 /* Revision 2 target */
356
357 static unsigned int
set_target_v2(struct sk_buff * skb,const struct xt_action_param * par)358 set_target_v2(struct sk_buff *skb, const struct xt_action_param *par)
359 {
360 const struct xt_set_info_target_v2 *info = par->targinfo;
361
362 ADT_OPT(add_opt, xt_family(par), info->add_set.dim,
363 info->add_set.flags, info->flags, info->timeout,
364 0, 0, 0, 0);
365 ADT_OPT(del_opt, xt_family(par), info->del_set.dim,
366 info->del_set.flags, 0, UINT_MAX,
367 0, 0, 0, 0);
368
369 /* Normalize to fit into jiffies */
370 if (add_opt.ext.timeout != IPSET_NO_TIMEOUT &&
371 add_opt.ext.timeout > IPSET_MAX_TIMEOUT)
372 add_opt.ext.timeout = IPSET_MAX_TIMEOUT;
373 if (info->add_set.index != IPSET_INVALID_ID)
374 ip_set_add(info->add_set.index, skb, par, &add_opt);
375 if (info->del_set.index != IPSET_INVALID_ID)
376 ip_set_del(info->del_set.index, skb, par, &del_opt);
377
378 return XT_CONTINUE;
379 }
380
381 #define set_target_v2_checkentry set_target_v1_checkentry
382 #define set_target_v2_destroy set_target_v1_destroy
383
384 /* Revision 3 target */
385
386 #define MOPT(opt, member) ((opt).ext.skbinfo.member)
387
388 static unsigned int
set_target_v3(struct sk_buff * skb,const struct xt_action_param * par)389 set_target_v3(struct sk_buff *skb, const struct xt_action_param *par)
390 {
391 const struct xt_set_info_target_v3 *info = par->targinfo;
392 int ret;
393
394 ADT_OPT(add_opt, xt_family(par), info->add_set.dim,
395 info->add_set.flags, info->flags, info->timeout,
396 0, 0, 0, 0);
397 ADT_OPT(del_opt, xt_family(par), info->del_set.dim,
398 info->del_set.flags, 0, UINT_MAX,
399 0, 0, 0, 0);
400 ADT_OPT(map_opt, xt_family(par), info->map_set.dim,
401 info->map_set.flags, 0, UINT_MAX,
402 0, 0, 0, 0);
403
404 /* Normalize to fit into jiffies */
405 if (add_opt.ext.timeout != IPSET_NO_TIMEOUT &&
406 add_opt.ext.timeout > IPSET_MAX_TIMEOUT)
407 add_opt.ext.timeout = IPSET_MAX_TIMEOUT;
408 if (info->add_set.index != IPSET_INVALID_ID)
409 ip_set_add(info->add_set.index, skb, par, &add_opt);
410 if (info->del_set.index != IPSET_INVALID_ID)
411 ip_set_del(info->del_set.index, skb, par, &del_opt);
412 if (info->map_set.index != IPSET_INVALID_ID) {
413 map_opt.cmdflags |= info->flags & (IPSET_FLAG_MAP_SKBMARK |
414 IPSET_FLAG_MAP_SKBPRIO |
415 IPSET_FLAG_MAP_SKBQUEUE);
416 ret = match_set(info->map_set.index, skb, par, &map_opt,
417 info->map_set.flags & IPSET_INV_MATCH);
418 if (!ret)
419 return XT_CONTINUE;
420 if (map_opt.cmdflags & IPSET_FLAG_MAP_SKBMARK)
421 skb->mark = (skb->mark & ~MOPT(map_opt,skbmarkmask))
422 ^ MOPT(map_opt, skbmark);
423 if (map_opt.cmdflags & IPSET_FLAG_MAP_SKBPRIO)
424 skb->priority = MOPT(map_opt, skbprio);
425 if ((map_opt.cmdflags & IPSET_FLAG_MAP_SKBQUEUE) &&
426 skb->dev &&
427 skb->dev->real_num_tx_queues > MOPT(map_opt, skbqueue))
428 skb_set_queue_mapping(skb, MOPT(map_opt, skbqueue));
429 }
430 return XT_CONTINUE;
431 }
432
433 static int
set_target_v3_checkentry(const struct xt_tgchk_param * par)434 set_target_v3_checkentry(const struct xt_tgchk_param *par)
435 {
436 const struct xt_set_info_target_v3 *info = par->targinfo;
437 ip_set_id_t index;
438 int ret = 0;
439
440 if (info->add_set.index != IPSET_INVALID_ID) {
441 index = ip_set_nfnl_get_byindex(par->net,
442 info->add_set.index);
443 if (index == IPSET_INVALID_ID) {
444 pr_info_ratelimited("Cannot find add_set index %u as target\n",
445 info->add_set.index);
446 return -ENOENT;
447 }
448 }
449
450 if (info->del_set.index != IPSET_INVALID_ID) {
451 index = ip_set_nfnl_get_byindex(par->net,
452 info->del_set.index);
453 if (index == IPSET_INVALID_ID) {
454 pr_info_ratelimited("Cannot find del_set index %u as target\n",
455 info->del_set.index);
456 ret = -ENOENT;
457 goto cleanup_add;
458 }
459 }
460
461 if (info->map_set.index != IPSET_INVALID_ID) {
462 if (strncmp(par->table, "mangle", 7)) {
463 pr_info_ratelimited("--map-set only usable from mangle table\n");
464 ret = -EINVAL;
465 goto cleanup_del;
466 }
467 if (((info->flags & IPSET_FLAG_MAP_SKBPRIO) |
468 (info->flags & IPSET_FLAG_MAP_SKBQUEUE)) &&
469 (par->hook_mask & ~(1 << NF_INET_FORWARD |
470 1 << NF_INET_LOCAL_OUT |
471 1 << NF_INET_POST_ROUTING))) {
472 pr_info_ratelimited("mapping of prio or/and queue is allowed only from OUTPUT/FORWARD/POSTROUTING chains\n");
473 ret = -EINVAL;
474 goto cleanup_del;
475 }
476 index = ip_set_nfnl_get_byindex(par->net,
477 info->map_set.index);
478 if (index == IPSET_INVALID_ID) {
479 pr_info_ratelimited("Cannot find map_set index %u as target\n",
480 info->map_set.index);
481 ret = -ENOENT;
482 goto cleanup_del;
483 }
484 }
485
486 if (info->add_set.dim > IPSET_DIM_MAX ||
487 info->del_set.dim > IPSET_DIM_MAX ||
488 info->map_set.dim > IPSET_DIM_MAX) {
489 pr_info_ratelimited("SET target dimension over the limit!\n");
490 ret = -ERANGE;
491 goto cleanup_mark;
492 }
493
494 return 0;
495 cleanup_mark:
496 if (info->map_set.index != IPSET_INVALID_ID)
497 ip_set_nfnl_put(par->net, info->map_set.index);
498 cleanup_del:
499 if (info->del_set.index != IPSET_INVALID_ID)
500 ip_set_nfnl_put(par->net, info->del_set.index);
501 cleanup_add:
502 if (info->add_set.index != IPSET_INVALID_ID)
503 ip_set_nfnl_put(par->net, info->add_set.index);
504 return ret;
505 }
506
507 static void
set_target_v3_destroy(const struct xt_tgdtor_param * par)508 set_target_v3_destroy(const struct xt_tgdtor_param *par)
509 {
510 const struct xt_set_info_target_v3 *info = par->targinfo;
511
512 if (info->add_set.index != IPSET_INVALID_ID)
513 ip_set_nfnl_put(par->net, info->add_set.index);
514 if (info->del_set.index != IPSET_INVALID_ID)
515 ip_set_nfnl_put(par->net, info->del_set.index);
516 if (info->map_set.index != IPSET_INVALID_ID)
517 ip_set_nfnl_put(par->net, info->map_set.index);
518 }
519
520 static struct xt_match set_matches[] __read_mostly = {
521 {
522 .name = "set",
523 .family = NFPROTO_IPV4,
524 .revision = 0,
525 .match = set_match_v0,
526 .matchsize = sizeof(struct xt_set_info_match_v0),
527 .checkentry = set_match_v0_checkentry,
528 .destroy = set_match_v0_destroy,
529 .me = THIS_MODULE
530 },
531 {
532 .name = "set",
533 .family = NFPROTO_IPV4,
534 .revision = 1,
535 .match = set_match_v1,
536 .matchsize = sizeof(struct xt_set_info_match_v1),
537 .checkentry = set_match_v1_checkentry,
538 .destroy = set_match_v1_destroy,
539 .me = THIS_MODULE
540 },
541 {
542 .name = "set",
543 .family = NFPROTO_IPV6,
544 .revision = 1,
545 .match = set_match_v1,
546 .matchsize = sizeof(struct xt_set_info_match_v1),
547 .checkentry = set_match_v1_checkentry,
548 .destroy = set_match_v1_destroy,
549 .me = THIS_MODULE
550 },
551 /* --return-nomatch flag support */
552 {
553 .name = "set",
554 .family = NFPROTO_IPV4,
555 .revision = 2,
556 .match = set_match_v1,
557 .matchsize = sizeof(struct xt_set_info_match_v1),
558 .checkentry = set_match_v1_checkentry,
559 .destroy = set_match_v1_destroy,
560 .me = THIS_MODULE
561 },
562 {
563 .name = "set",
564 .family = NFPROTO_IPV6,
565 .revision = 2,
566 .match = set_match_v1,
567 .matchsize = sizeof(struct xt_set_info_match_v1),
568 .checkentry = set_match_v1_checkentry,
569 .destroy = set_match_v1_destroy,
570 .me = THIS_MODULE
571 },
572 /* counters support: update, match */
573 {
574 .name = "set",
575 .family = NFPROTO_IPV4,
576 .revision = 3,
577 .match = set_match_v3,
578 .matchsize = sizeof(struct xt_set_info_match_v3),
579 .checkentry = set_match_v3_checkentry,
580 .destroy = set_match_v3_destroy,
581 .me = THIS_MODULE
582 },
583 {
584 .name = "set",
585 .family = NFPROTO_IPV6,
586 .revision = 3,
587 .match = set_match_v3,
588 .matchsize = sizeof(struct xt_set_info_match_v3),
589 .checkentry = set_match_v3_checkentry,
590 .destroy = set_match_v3_destroy,
591 .me = THIS_MODULE
592 },
593 /* new revision for counters support: update, match */
594 {
595 .name = "set",
596 .family = NFPROTO_IPV4,
597 .revision = 4,
598 .match = set_match_v4,
599 .matchsize = sizeof(struct xt_set_info_match_v4),
600 .checkentry = set_match_v4_checkentry,
601 .destroy = set_match_v4_destroy,
602 .me = THIS_MODULE
603 },
604 {
605 .name = "set",
606 .family = NFPROTO_IPV6,
607 .revision = 4,
608 .match = set_match_v4,
609 .matchsize = sizeof(struct xt_set_info_match_v4),
610 .checkentry = set_match_v4_checkentry,
611 .destroy = set_match_v4_destroy,
612 .me = THIS_MODULE
613 },
614 };
615
616 static struct xt_target set_targets[] __read_mostly = {
617 {
618 .name = "SET",
619 .revision = 0,
620 .family = NFPROTO_IPV4,
621 .target = set_target_v0,
622 .targetsize = sizeof(struct xt_set_info_target_v0),
623 .checkentry = set_target_v0_checkentry,
624 .destroy = set_target_v0_destroy,
625 .me = THIS_MODULE
626 },
627 {
628 .name = "SET",
629 .revision = 1,
630 .family = NFPROTO_IPV4,
631 .target = set_target_v1,
632 .targetsize = sizeof(struct xt_set_info_target_v1),
633 .checkentry = set_target_v1_checkentry,
634 .destroy = set_target_v1_destroy,
635 .me = THIS_MODULE
636 },
637 {
638 .name = "SET",
639 .revision = 1,
640 .family = NFPROTO_IPV6,
641 .target = set_target_v1,
642 .targetsize = sizeof(struct xt_set_info_target_v1),
643 .checkentry = set_target_v1_checkentry,
644 .destroy = set_target_v1_destroy,
645 .me = THIS_MODULE
646 },
647 /* --timeout and --exist flags support */
648 {
649 .name = "SET",
650 .revision = 2,
651 .family = NFPROTO_IPV4,
652 .target = set_target_v2,
653 .targetsize = sizeof(struct xt_set_info_target_v2),
654 .checkentry = set_target_v2_checkentry,
655 .destroy = set_target_v2_destroy,
656 .me = THIS_MODULE
657 },
658 {
659 .name = "SET",
660 .revision = 2,
661 .family = NFPROTO_IPV6,
662 .target = set_target_v2,
663 .targetsize = sizeof(struct xt_set_info_target_v2),
664 .checkentry = set_target_v2_checkentry,
665 .destroy = set_target_v2_destroy,
666 .me = THIS_MODULE
667 },
668 /* --map-set support */
669 {
670 .name = "SET",
671 .revision = 3,
672 .family = NFPROTO_IPV4,
673 .target = set_target_v3,
674 .targetsize = sizeof(struct xt_set_info_target_v3),
675 .checkentry = set_target_v3_checkentry,
676 .destroy = set_target_v3_destroy,
677 .me = THIS_MODULE
678 },
679 {
680 .name = "SET",
681 .revision = 3,
682 .family = NFPROTO_IPV6,
683 .target = set_target_v3,
684 .targetsize = sizeof(struct xt_set_info_target_v3),
685 .checkentry = set_target_v3_checkentry,
686 .destroy = set_target_v3_destroy,
687 .me = THIS_MODULE
688 },
689 };
690
xt_set_init(void)691 static int __init xt_set_init(void)
692 {
693 int ret = xt_register_matches(set_matches, ARRAY_SIZE(set_matches));
694
695 if (!ret) {
696 ret = xt_register_targets(set_targets,
697 ARRAY_SIZE(set_targets));
698 if (ret)
699 xt_unregister_matches(set_matches,
700 ARRAY_SIZE(set_matches));
701 }
702 return ret;
703 }
704
xt_set_fini(void)705 static void __exit xt_set_fini(void)
706 {
707 xt_unregister_matches(set_matches, ARRAY_SIZE(set_matches));
708 xt_unregister_targets(set_targets, ARRAY_SIZE(set_targets));
709 }
710
711 module_init(xt_set_init);
712 module_exit(xt_set_fini);
713