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d956798d JK |
1 | /* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu> |
2 | * Patrick Schaaf <bof@bof.de> | |
3 | * Martin Josefsson <gandalf@wlug.westbo.se> | |
075e64c0 | 4 | * Copyright (C) 2003-2013 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> |
d956798d JK |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | /* Kernel module which implements the set match and SET target | |
12 | * for netfilter/iptables. */ | |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/skbuff.h> | |
d956798d JK |
16 | |
17 | #include <linux/netfilter/x_tables.h> | |
18 | #include <linux/netfilter/xt_set.h> | |
a73f89a6 | 19 | #include <linux/netfilter/ipset/ip_set_timeout.h> |
d956798d JK |
20 | |
21 | MODULE_LICENSE("GPL"); | |
22 | MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>"); | |
23 | MODULE_DESCRIPTION("Xtables: IP set match and target module"); | |
24 | MODULE_ALIAS("xt_SET"); | |
25 | MODULE_ALIAS("ipt_set"); | |
26 | MODULE_ALIAS("ip6t_set"); | |
27 | MODULE_ALIAS("ipt_SET"); | |
28 | MODULE_ALIAS("ip6t_SET"); | |
29 | ||
30 | static inline int | |
31 | match_set(ip_set_id_t index, const struct sk_buff *skb, | |
b66554cf | 32 | const struct xt_action_param *par, |
075e64c0 | 33 | struct ip_set_adt_opt *opt, int inv) |
d956798d | 34 | { |
b66554cf | 35 | if (ip_set_test(index, skb, par, opt)) |
d956798d JK |
36 | inv = !inv; |
37 | return inv; | |
38 | } | |
39 | ||
15b4d93f | 40 | #define ADT_OPT(n, f, d, fs, cfs, t) \ |
127f5591 JK |
41 | struct ip_set_adt_opt n = { \ |
42 | .family = f, \ | |
43 | .dim = d, \ | |
44 | .flags = fs, \ | |
45 | .cmdflags = cfs, \ | |
075e64c0 | 46 | .ext.timeout = t, \ |
127f5591 | 47 | } |
ac8cc925 | 48 | |
d956798d JK |
49 | /* Revision 0 interface: backward compatible with netfilter/iptables */ |
50 | ||
51 | static bool | |
52 | set_match_v0(const struct sk_buff *skb, struct xt_action_param *par) | |
53 | { | |
54 | const struct xt_set_info_match_v0 *info = par->matchinfo; | |
ac8cc925 JK |
55 | ADT_OPT(opt, par->family, info->match_set.u.compat.dim, |
56 | info->match_set.u.compat.flags, 0, UINT_MAX); | |
d956798d | 57 | |
b66554cf | 58 | return match_set(info->match_set.index, skb, par, &opt, |
d956798d JK |
59 | info->match_set.u.compat.flags & IPSET_INV_MATCH); |
60 | } | |
61 | ||
62 | static void | |
63 | compat_flags(struct xt_set_info_v0 *info) | |
64 | { | |
65 | u_int8_t i; | |
66 | ||
67 | /* Fill out compatibility data according to enum ip_set_kopt */ | |
68 | info->u.compat.dim = IPSET_DIM_ZERO; | |
69 | if (info->u.flags[0] & IPSET_MATCH_INV) | |
70 | info->u.compat.flags |= IPSET_INV_MATCH; | |
71 | for (i = 0; i < IPSET_DIM_MAX-1 && info->u.flags[i]; i++) { | |
72 | info->u.compat.dim++; | |
73 | if (info->u.flags[i] & IPSET_SRC) | |
74 | info->u.compat.flags |= (1<<info->u.compat.dim); | |
75 | } | |
76 | } | |
77 | ||
78 | static int | |
79 | set_match_v0_checkentry(const struct xt_mtchk_param *par) | |
80 | { | |
81 | struct xt_set_info_match_v0 *info = par->matchinfo; | |
82 | ip_set_id_t index; | |
83 | ||
84 | index = ip_set_nfnl_get_byindex(info->match_set.index); | |
85 | ||
86 | if (index == IPSET_INVALID_ID) { | |
87 | pr_warning("Cannot find set indentified by id %u to match\n", | |
88 | info->match_set.index); | |
89 | return -ENOENT; | |
90 | } | |
91 | if (info->match_set.u.flags[IPSET_DIM_MAX-1] != 0) { | |
92 | pr_warning("Protocol error: set match dimension " | |
93 | "is over the limit!\n"); | |
eafbd3fd | 94 | ip_set_nfnl_put(info->match_set.index); |
d956798d JK |
95 | return -ERANGE; |
96 | } | |
97 | ||
98 | /* Fill out compatibility data */ | |
99 | compat_flags(&info->match_set); | |
100 | ||
101 | return 0; | |
102 | } | |
103 | ||
104 | static void | |
105 | set_match_v0_destroy(const struct xt_mtdtor_param *par) | |
106 | { | |
107 | struct xt_set_info_match_v0 *info = par->matchinfo; | |
108 | ||
109 | ip_set_nfnl_put(info->match_set.index); | |
110 | } | |
111 | ||
112 | static unsigned int | |
113 | set_target_v0(struct sk_buff *skb, const struct xt_action_param *par) | |
114 | { | |
115 | const struct xt_set_info_target_v0 *info = par->targinfo; | |
ac8cc925 JK |
116 | ADT_OPT(add_opt, par->family, info->add_set.u.compat.dim, |
117 | info->add_set.u.compat.flags, 0, UINT_MAX); | |
118 | ADT_OPT(del_opt, par->family, info->del_set.u.compat.dim, | |
119 | info->del_set.u.compat.flags, 0, UINT_MAX); | |
d956798d JK |
120 | |
121 | if (info->add_set.index != IPSET_INVALID_ID) | |
b66554cf | 122 | ip_set_add(info->add_set.index, skb, par, &add_opt); |
d956798d | 123 | if (info->del_set.index != IPSET_INVALID_ID) |
b66554cf | 124 | ip_set_del(info->del_set.index, skb, par, &del_opt); |
d956798d JK |
125 | |
126 | return XT_CONTINUE; | |
127 | } | |
128 | ||
129 | static int | |
130 | set_target_v0_checkentry(const struct xt_tgchk_param *par) | |
131 | { | |
132 | struct xt_set_info_target_v0 *info = par->targinfo; | |
133 | ip_set_id_t index; | |
134 | ||
135 | if (info->add_set.index != IPSET_INVALID_ID) { | |
136 | index = ip_set_nfnl_get_byindex(info->add_set.index); | |
137 | if (index == IPSET_INVALID_ID) { | |
138 | pr_warning("Cannot find add_set index %u as target\n", | |
139 | info->add_set.index); | |
140 | return -ENOENT; | |
141 | } | |
142 | } | |
143 | ||
144 | if (info->del_set.index != IPSET_INVALID_ID) { | |
145 | index = ip_set_nfnl_get_byindex(info->del_set.index); | |
146 | if (index == IPSET_INVALID_ID) { | |
147 | pr_warning("Cannot find del_set index %u as target\n", | |
148 | info->del_set.index); | |
eafbd3fd JK |
149 | if (info->add_set.index != IPSET_INVALID_ID) |
150 | ip_set_nfnl_put(info->add_set.index); | |
d956798d JK |
151 | return -ENOENT; |
152 | } | |
153 | } | |
154 | if (info->add_set.u.flags[IPSET_DIM_MAX-1] != 0 || | |
155 | info->del_set.u.flags[IPSET_DIM_MAX-1] != 0) { | |
156 | pr_warning("Protocol error: SET target dimension " | |
157 | "is over the limit!\n"); | |
eafbd3fd JK |
158 | if (info->add_set.index != IPSET_INVALID_ID) |
159 | ip_set_nfnl_put(info->add_set.index); | |
160 | if (info->del_set.index != IPSET_INVALID_ID) | |
161 | ip_set_nfnl_put(info->del_set.index); | |
d956798d JK |
162 | return -ERANGE; |
163 | } | |
164 | ||
165 | /* Fill out compatibility data */ | |
166 | compat_flags(&info->add_set); | |
167 | compat_flags(&info->del_set); | |
168 | ||
169 | return 0; | |
170 | } | |
171 | ||
172 | static void | |
173 | set_target_v0_destroy(const struct xt_tgdtor_param *par) | |
174 | { | |
175 | const struct xt_set_info_target_v0 *info = par->targinfo; | |
176 | ||
177 | if (info->add_set.index != IPSET_INVALID_ID) | |
178 | ip_set_nfnl_put(info->add_set.index); | |
179 | if (info->del_set.index != IPSET_INVALID_ID) | |
180 | ip_set_nfnl_put(info->del_set.index); | |
181 | } | |
182 | ||
ac8cc925 | 183 | /* Revision 1 match and target */ |
d956798d JK |
184 | |
185 | static bool | |
ac8cc925 | 186 | set_match_v1(const struct sk_buff *skb, struct xt_action_param *par) |
d956798d | 187 | { |
ac8cc925 JK |
188 | const struct xt_set_info_match_v1 *info = par->matchinfo; |
189 | ADT_OPT(opt, par->family, info->match_set.dim, | |
190 | info->match_set.flags, 0, UINT_MAX); | |
d956798d | 191 | |
6e01781d JK |
192 | if (opt.flags & IPSET_RETURN_NOMATCH) |
193 | opt.cmdflags |= IPSET_FLAG_RETURN_NOMATCH; | |
194 | ||
b66554cf | 195 | return match_set(info->match_set.index, skb, par, &opt, |
d956798d JK |
196 | info->match_set.flags & IPSET_INV_MATCH); |
197 | } | |
198 | ||
199 | static int | |
ac8cc925 | 200 | set_match_v1_checkentry(const struct xt_mtchk_param *par) |
d956798d | 201 | { |
ac8cc925 | 202 | struct xt_set_info_match_v1 *info = par->matchinfo; |
d956798d JK |
203 | ip_set_id_t index; |
204 | ||
205 | index = ip_set_nfnl_get_byindex(info->match_set.index); | |
206 | ||
207 | if (index == IPSET_INVALID_ID) { | |
208 | pr_warning("Cannot find set indentified by id %u to match\n", | |
209 | info->match_set.index); | |
210 | return -ENOENT; | |
211 | } | |
212 | if (info->match_set.dim > IPSET_DIM_MAX) { | |
213 | pr_warning("Protocol error: set match dimension " | |
214 | "is over the limit!\n"); | |
eafbd3fd | 215 | ip_set_nfnl_put(info->match_set.index); |
d956798d JK |
216 | return -ERANGE; |
217 | } | |
218 | ||
219 | return 0; | |
220 | } | |
221 | ||
222 | static void | |
ac8cc925 | 223 | set_match_v1_destroy(const struct xt_mtdtor_param *par) |
d956798d | 224 | { |
ac8cc925 | 225 | struct xt_set_info_match_v1 *info = par->matchinfo; |
d956798d JK |
226 | |
227 | ip_set_nfnl_put(info->match_set.index); | |
228 | } | |
229 | ||
230 | static unsigned int | |
ac8cc925 | 231 | set_target_v1(struct sk_buff *skb, const struct xt_action_param *par) |
d956798d | 232 | { |
ac8cc925 JK |
233 | const struct xt_set_info_target_v1 *info = par->targinfo; |
234 | ADT_OPT(add_opt, par->family, info->add_set.dim, | |
235 | info->add_set.flags, 0, UINT_MAX); | |
236 | ADT_OPT(del_opt, par->family, info->del_set.dim, | |
237 | info->del_set.flags, 0, UINT_MAX); | |
d956798d JK |
238 | |
239 | if (info->add_set.index != IPSET_INVALID_ID) | |
b66554cf | 240 | ip_set_add(info->add_set.index, skb, par, &add_opt); |
d956798d | 241 | if (info->del_set.index != IPSET_INVALID_ID) |
b66554cf | 242 | ip_set_del(info->del_set.index, skb, par, &del_opt); |
d956798d JK |
243 | |
244 | return XT_CONTINUE; | |
245 | } | |
246 | ||
247 | static int | |
ac8cc925 | 248 | set_target_v1_checkentry(const struct xt_tgchk_param *par) |
d956798d | 249 | { |
ac8cc925 | 250 | const struct xt_set_info_target_v1 *info = par->targinfo; |
d956798d JK |
251 | ip_set_id_t index; |
252 | ||
253 | if (info->add_set.index != IPSET_INVALID_ID) { | |
254 | index = ip_set_nfnl_get_byindex(info->add_set.index); | |
255 | if (index == IPSET_INVALID_ID) { | |
256 | pr_warning("Cannot find add_set index %u as target\n", | |
257 | info->add_set.index); | |
258 | return -ENOENT; | |
259 | } | |
260 | } | |
261 | ||
262 | if (info->del_set.index != IPSET_INVALID_ID) { | |
263 | index = ip_set_nfnl_get_byindex(info->del_set.index); | |
264 | if (index == IPSET_INVALID_ID) { | |
265 | pr_warning("Cannot find del_set index %u as target\n", | |
266 | info->del_set.index); | |
eafbd3fd JK |
267 | if (info->add_set.index != IPSET_INVALID_ID) |
268 | ip_set_nfnl_put(info->add_set.index); | |
d956798d JK |
269 | return -ENOENT; |
270 | } | |
271 | } | |
272 | if (info->add_set.dim > IPSET_DIM_MAX || | |
eafbd3fd | 273 | info->del_set.dim > IPSET_DIM_MAX) { |
d956798d JK |
274 | pr_warning("Protocol error: SET target dimension " |
275 | "is over the limit!\n"); | |
eafbd3fd JK |
276 | if (info->add_set.index != IPSET_INVALID_ID) |
277 | ip_set_nfnl_put(info->add_set.index); | |
278 | if (info->del_set.index != IPSET_INVALID_ID) | |
279 | ip_set_nfnl_put(info->del_set.index); | |
d956798d JK |
280 | return -ERANGE; |
281 | } | |
282 | ||
283 | return 0; | |
284 | } | |
285 | ||
286 | static void | |
ac8cc925 | 287 | set_target_v1_destroy(const struct xt_tgdtor_param *par) |
d956798d | 288 | { |
ac8cc925 | 289 | const struct xt_set_info_target_v1 *info = par->targinfo; |
d956798d JK |
290 | |
291 | if (info->add_set.index != IPSET_INVALID_ID) | |
292 | ip_set_nfnl_put(info->add_set.index); | |
293 | if (info->del_set.index != IPSET_INVALID_ID) | |
294 | ip_set_nfnl_put(info->del_set.index); | |
295 | } | |
296 | ||
ac8cc925 JK |
297 | /* Revision 2 target */ |
298 | ||
299 | static unsigned int | |
300 | set_target_v2(struct sk_buff *skb, const struct xt_action_param *par) | |
301 | { | |
302 | const struct xt_set_info_target_v2 *info = par->targinfo; | |
075e64c0 JK |
303 | ADT_OPT(add_opt, par->family, info->add_set.dim, |
304 | info->add_set.flags, info->flags, info->timeout); | |
ac8cc925 JK |
305 | ADT_OPT(del_opt, par->family, info->del_set.dim, |
306 | info->del_set.flags, 0, UINT_MAX); | |
307 | ||
127f5591 | 308 | /* Normalize to fit into jiffies */ |
075e64c0 JK |
309 | if (add_opt.ext.timeout != IPSET_NO_TIMEOUT && |
310 | add_opt.ext.timeout > UINT_MAX/MSEC_PER_SEC) | |
311 | add_opt.ext.timeout = UINT_MAX/MSEC_PER_SEC; | |
ac8cc925 | 312 | if (info->add_set.index != IPSET_INVALID_ID) |
b66554cf | 313 | ip_set_add(info->add_set.index, skb, par, &add_opt); |
ac8cc925 | 314 | if (info->del_set.index != IPSET_INVALID_ID) |
b66554cf | 315 | ip_set_del(info->del_set.index, skb, par, &del_opt); |
ac8cc925 JK |
316 | |
317 | return XT_CONTINUE; | |
318 | } | |
319 | ||
320 | #define set_target_v2_checkentry set_target_v1_checkentry | |
321 | #define set_target_v2_destroy set_target_v1_destroy | |
322 | ||
6e01781d JK |
323 | /* Revision 3 match */ |
324 | ||
325 | static bool | |
326 | match_counter(u64 counter, const struct ip_set_counter_match *info) | |
327 | { | |
328 | switch (info->op) { | |
329 | case IPSET_COUNTER_NONE: | |
330 | return true; | |
331 | case IPSET_COUNTER_EQ: | |
332 | return counter == info->value; | |
333 | case IPSET_COUNTER_NE: | |
334 | return counter != info->value; | |
335 | case IPSET_COUNTER_LT: | |
336 | return counter < info->value; | |
337 | case IPSET_COUNTER_GT: | |
338 | return counter > info->value; | |
339 | } | |
340 | return false; | |
341 | } | |
342 | ||
343 | static bool | |
344 | set_match_v3(const struct sk_buff *skb, struct xt_action_param *par) | |
345 | { | |
346 | const struct xt_set_info_match_v3 *info = par->matchinfo; | |
347 | ADT_OPT(opt, par->family, info->match_set.dim, | |
348 | info->match_set.flags, info->flags, UINT_MAX); | |
349 | int ret; | |
350 | ||
351 | if (info->packets.op != IPSET_COUNTER_NONE || | |
352 | info->bytes.op != IPSET_COUNTER_NONE) | |
353 | opt.cmdflags |= IPSET_FLAG_MATCH_COUNTERS; | |
354 | ||
355 | ret = match_set(info->match_set.index, skb, par, &opt, | |
356 | info->match_set.flags & IPSET_INV_MATCH); | |
357 | ||
358 | if (!(ret && opt.cmdflags & IPSET_FLAG_MATCH_COUNTERS)) | |
359 | return ret; | |
360 | ||
361 | if (!match_counter(opt.ext.packets, &info->packets)) | |
362 | return 0; | |
363 | return match_counter(opt.ext.bytes, &info->bytes); | |
364 | } | |
365 | ||
366 | #define set_match_v3_checkentry set_match_v1_checkentry | |
367 | #define set_match_v3_destroy set_match_v1_destroy | |
368 | ||
d956798d JK |
369 | static struct xt_match set_matches[] __read_mostly = { |
370 | { | |
371 | .name = "set", | |
372 | .family = NFPROTO_IPV4, | |
373 | .revision = 0, | |
374 | .match = set_match_v0, | |
375 | .matchsize = sizeof(struct xt_set_info_match_v0), | |
376 | .checkentry = set_match_v0_checkentry, | |
377 | .destroy = set_match_v0_destroy, | |
378 | .me = THIS_MODULE | |
379 | }, | |
380 | { | |
381 | .name = "set", | |
382 | .family = NFPROTO_IPV4, | |
383 | .revision = 1, | |
ac8cc925 JK |
384 | .match = set_match_v1, |
385 | .matchsize = sizeof(struct xt_set_info_match_v1), | |
386 | .checkentry = set_match_v1_checkentry, | |
387 | .destroy = set_match_v1_destroy, | |
d956798d JK |
388 | .me = THIS_MODULE |
389 | }, | |
390 | { | |
391 | .name = "set", | |
392 | .family = NFPROTO_IPV6, | |
393 | .revision = 1, | |
ac8cc925 JK |
394 | .match = set_match_v1, |
395 | .matchsize = sizeof(struct xt_set_info_match_v1), | |
396 | .checkentry = set_match_v1_checkentry, | |
397 | .destroy = set_match_v1_destroy, | |
d956798d JK |
398 | .me = THIS_MODULE |
399 | }, | |
3e0304a5 JK |
400 | /* --return-nomatch flag support */ |
401 | { | |
402 | .name = "set", | |
403 | .family = NFPROTO_IPV4, | |
404 | .revision = 2, | |
405 | .match = set_match_v1, | |
406 | .matchsize = sizeof(struct xt_set_info_match_v1), | |
407 | .checkentry = set_match_v1_checkentry, | |
408 | .destroy = set_match_v1_destroy, | |
409 | .me = THIS_MODULE | |
410 | }, | |
411 | { | |
412 | .name = "set", | |
413 | .family = NFPROTO_IPV6, | |
414 | .revision = 2, | |
415 | .match = set_match_v1, | |
416 | .matchsize = sizeof(struct xt_set_info_match_v1), | |
417 | .checkentry = set_match_v1_checkentry, | |
418 | .destroy = set_match_v1_destroy, | |
419 | .me = THIS_MODULE | |
420 | }, | |
6e01781d JK |
421 | /* counters support: update, match */ |
422 | { | |
423 | .name = "set", | |
424 | .family = NFPROTO_IPV4, | |
425 | .revision = 3, | |
426 | .match = set_match_v3, | |
427 | .matchsize = sizeof(struct xt_set_info_match_v3), | |
428 | .checkentry = set_match_v3_checkentry, | |
429 | .destroy = set_match_v3_destroy, | |
430 | .me = THIS_MODULE | |
431 | }, | |
432 | { | |
433 | .name = "set", | |
434 | .family = NFPROTO_IPV6, | |
435 | .revision = 3, | |
436 | .match = set_match_v3, | |
437 | .matchsize = sizeof(struct xt_set_info_match_v3), | |
438 | .checkentry = set_match_v3_checkentry, | |
439 | .destroy = set_match_v3_destroy, | |
440 | .me = THIS_MODULE | |
441 | }, | |
d956798d JK |
442 | }; |
443 | ||
444 | static struct xt_target set_targets[] __read_mostly = { | |
445 | { | |
446 | .name = "SET", | |
447 | .revision = 0, | |
448 | .family = NFPROTO_IPV4, | |
449 | .target = set_target_v0, | |
450 | .targetsize = sizeof(struct xt_set_info_target_v0), | |
451 | .checkentry = set_target_v0_checkentry, | |
452 | .destroy = set_target_v0_destroy, | |
453 | .me = THIS_MODULE | |
454 | }, | |
455 | { | |
456 | .name = "SET", | |
457 | .revision = 1, | |
458 | .family = NFPROTO_IPV4, | |
ac8cc925 JK |
459 | .target = set_target_v1, |
460 | .targetsize = sizeof(struct xt_set_info_target_v1), | |
461 | .checkentry = set_target_v1_checkentry, | |
462 | .destroy = set_target_v1_destroy, | |
d956798d JK |
463 | .me = THIS_MODULE |
464 | }, | |
465 | { | |
466 | .name = "SET", | |
467 | .revision = 1, | |
468 | .family = NFPROTO_IPV6, | |
ac8cc925 JK |
469 | .target = set_target_v1, |
470 | .targetsize = sizeof(struct xt_set_info_target_v1), | |
471 | .checkentry = set_target_v1_checkentry, | |
472 | .destroy = set_target_v1_destroy, | |
473 | .me = THIS_MODULE | |
474 | }, | |
3e0304a5 | 475 | /* --timeout and --exist flags support */ |
ac8cc925 JK |
476 | { |
477 | .name = "SET", | |
478 | .revision = 2, | |
479 | .family = NFPROTO_IPV4, | |
480 | .target = set_target_v2, | |
481 | .targetsize = sizeof(struct xt_set_info_target_v2), | |
482 | .checkentry = set_target_v2_checkentry, | |
483 | .destroy = set_target_v2_destroy, | |
484 | .me = THIS_MODULE | |
485 | }, | |
486 | { | |
487 | .name = "SET", | |
488 | .revision = 2, | |
489 | .family = NFPROTO_IPV6, | |
490 | .target = set_target_v2, | |
491 | .targetsize = sizeof(struct xt_set_info_target_v2), | |
492 | .checkentry = set_target_v2_checkentry, | |
493 | .destroy = set_target_v2_destroy, | |
d956798d JK |
494 | .me = THIS_MODULE |
495 | }, | |
496 | }; | |
497 | ||
498 | static int __init xt_set_init(void) | |
499 | { | |
500 | int ret = xt_register_matches(set_matches, ARRAY_SIZE(set_matches)); | |
501 | ||
502 | if (!ret) { | |
503 | ret = xt_register_targets(set_targets, | |
504 | ARRAY_SIZE(set_targets)); | |
505 | if (ret) | |
506 | xt_unregister_matches(set_matches, | |
507 | ARRAY_SIZE(set_matches)); | |
508 | } | |
509 | return ret; | |
510 | } | |
511 | ||
512 | static void __exit xt_set_fini(void) | |
513 | { | |
514 | xt_unregister_matches(set_matches, ARRAY_SIZE(set_matches)); | |
515 | xt_unregister_targets(set_targets, ARRAY_SIZE(set_targets)); | |
516 | } | |
517 | ||
518 | module_init(xt_set_init); | |
519 | module_exit(xt_set_fini); |