1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Copyright (C) 2008-2013 Jozsef Kadlecsik <kadlec@netfilter.org> */
3
4 /* Kernel module implementing an IP set type: the list:set type */
5
6 #include <linux/module.h>
7 #include <linux/ip.h>
8 #include <linux/rculist.h>
9 #include <linux/skbuff.h>
10 #include <linux/errno.h>
11
12 #include <linux/netfilter/ipset/ip_set.h>
13 #include <linux/netfilter/ipset/ip_set_list.h>
14
15 #define IPSET_TYPE_REV_MIN 0
16 /* 1 Counters support added */
17 /* 2 Comments support added */
18 #define IPSET_TYPE_REV_MAX 3 /* skbinfo support added */
19
20 MODULE_LICENSE("GPL");
21 MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@netfilter.org>");
22 IP_SET_MODULE_DESC("list:set", IPSET_TYPE_REV_MIN, IPSET_TYPE_REV_MAX);
23 MODULE_ALIAS("ip_set_list:set");
24
25 /* Member elements */
26 struct set_elem {
27 struct rcu_head rcu;
28 struct list_head list;
29 struct ip_set *set; /* Sigh, in order to cleanup reference */
30 ip_set_id_t id;
31 } __aligned(__alignof__(u64));
32
33 struct set_adt_elem {
34 ip_set_id_t id;
35 ip_set_id_t refid;
36 int before;
37 };
38
39 /* Type structure */
40 struct list_set {
41 u32 size; /* size of set list array */
42 struct timer_list gc; /* garbage collection */
43 struct ip_set *set; /* attached to this ip_set */
44 struct net *net; /* namespace */
45 struct list_head members; /* the set members */
46 };
47
48 static int
list_set_ktest(struct ip_set * set,const struct sk_buff * skb,const struct xt_action_param * par,struct ip_set_adt_opt * opt,const struct ip_set_ext * ext)49 list_set_ktest(struct ip_set *set, const struct sk_buff *skb,
50 const struct xt_action_param *par,
51 struct ip_set_adt_opt *opt, const struct ip_set_ext *ext)
52 {
53 struct list_set *map = set->data;
54 struct ip_set_ext *mext = &opt->ext;
55 struct set_elem *e;
56 u32 flags = opt->cmdflags;
57 int ret;
58
59 /* Don't lookup sub-counters at all */
60 opt->cmdflags &= ~IPSET_FLAG_MATCH_COUNTERS;
61 if (opt->cmdflags & IPSET_FLAG_SKIP_SUBCOUNTER_UPDATE)
62 opt->cmdflags |= IPSET_FLAG_SKIP_COUNTER_UPDATE;
63 list_for_each_entry_rcu(e, &map->members, list) {
64 ret = ip_set_test(e->id, skb, par, opt);
65 if (ret <= 0)
66 continue;
67 if (ip_set_match_extensions(set, ext, mext, flags, e))
68 return 1;
69 }
70 return 0;
71 }
72
73 static int
list_set_kadd(struct ip_set * set,const struct sk_buff * skb,const struct xt_action_param * par,struct ip_set_adt_opt * opt,const struct ip_set_ext * ext)74 list_set_kadd(struct ip_set *set, const struct sk_buff *skb,
75 const struct xt_action_param *par,
76 struct ip_set_adt_opt *opt, const struct ip_set_ext *ext)
77 {
78 struct list_set *map = set->data;
79 struct set_elem *e;
80 int ret;
81
82 list_for_each_entry_rcu(e, &map->members, list) {
83 if (SET_WITH_TIMEOUT(set) &&
84 ip_set_timeout_expired(ext_timeout(e, set)))
85 continue;
86 ret = ip_set_add(e->id, skb, par, opt);
87 if (ret == 0)
88 return ret;
89 }
90 return 0;
91 }
92
93 static int
list_set_kdel(struct ip_set * set,const struct sk_buff * skb,const struct xt_action_param * par,struct ip_set_adt_opt * opt,const struct ip_set_ext * ext)94 list_set_kdel(struct ip_set *set, const struct sk_buff *skb,
95 const struct xt_action_param *par,
96 struct ip_set_adt_opt *opt, const struct ip_set_ext *ext)
97 {
98 struct list_set *map = set->data;
99 struct set_elem *e;
100 int ret;
101
102 list_for_each_entry_rcu(e, &map->members, list) {
103 if (SET_WITH_TIMEOUT(set) &&
104 ip_set_timeout_expired(ext_timeout(e, set)))
105 continue;
106 ret = ip_set_del(e->id, skb, par, opt);
107 if (ret == 0)
108 return ret;
109 }
110 return 0;
111 }
112
113 static int
list_set_kadt(struct ip_set * set,const struct sk_buff * skb,const struct xt_action_param * par,enum ipset_adt adt,struct ip_set_adt_opt * opt)114 list_set_kadt(struct ip_set *set, const struct sk_buff *skb,
115 const struct xt_action_param *par,
116 enum ipset_adt adt, struct ip_set_adt_opt *opt)
117 {
118 struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
119 int ret = -EINVAL;
120
121 rcu_read_lock();
122 switch (adt) {
123 case IPSET_TEST:
124 ret = list_set_ktest(set, skb, par, opt, &ext);
125 break;
126 case IPSET_ADD:
127 ret = list_set_kadd(set, skb, par, opt, &ext);
128 break;
129 case IPSET_DEL:
130 ret = list_set_kdel(set, skb, par, opt, &ext);
131 break;
132 default:
133 break;
134 }
135 rcu_read_unlock();
136
137 return ret;
138 }
139
140 /* Userspace interfaces: we are protected by the nfnl mutex */
141
142 static void
__list_set_del_rcu(struct rcu_head * rcu)143 __list_set_del_rcu(struct rcu_head * rcu)
144 {
145 struct set_elem *e = container_of(rcu, struct set_elem, rcu);
146 struct ip_set *set = e->set;
147
148 ip_set_ext_destroy(set, e);
149 kfree(e);
150 }
151
152 static void
list_set_del(struct ip_set * set,struct set_elem * e)153 list_set_del(struct ip_set *set, struct set_elem *e)
154 {
155 struct list_set *map = set->data;
156
157 set->elements--;
158 list_del_rcu(&e->list);
159 ip_set_put_byindex(map->net, e->id);
160 call_rcu(&e->rcu, __list_set_del_rcu);
161 }
162
163 static void
list_set_replace(struct ip_set * set,struct set_elem * e,struct set_elem * old)164 list_set_replace(struct ip_set *set, struct set_elem *e, struct set_elem *old)
165 {
166 struct list_set *map = set->data;
167
168 list_replace_rcu(&old->list, &e->list);
169 ip_set_put_byindex(map->net, old->id);
170 call_rcu(&old->rcu, __list_set_del_rcu);
171 }
172
173 static void
set_cleanup_entries(struct ip_set * set)174 set_cleanup_entries(struct ip_set *set)
175 {
176 struct list_set *map = set->data;
177 struct set_elem *e, *n;
178
179 list_for_each_entry_safe(e, n, &map->members, list)
180 if (ip_set_timeout_expired(ext_timeout(e, set)))
181 list_set_del(set, e);
182 }
183
184 static int
list_set_utest(struct ip_set * set,void * value,const struct ip_set_ext * ext,struct ip_set_ext * mext,u32 flags)185 list_set_utest(struct ip_set *set, void *value, const struct ip_set_ext *ext,
186 struct ip_set_ext *mext, u32 flags)
187 {
188 struct list_set *map = set->data;
189 struct set_adt_elem *d = value;
190 struct set_elem *e, *next, *prev = NULL;
191 int ret = 0;
192
193 rcu_read_lock();
194 list_for_each_entry_rcu(e, &map->members, list) {
195 if (SET_WITH_TIMEOUT(set) &&
196 ip_set_timeout_expired(ext_timeout(e, set)))
197 continue;
198 else if (e->id != d->id) {
199 prev = e;
200 continue;
201 }
202
203 if (d->before == 0) {
204 ret = 1;
205 goto out;
206 } else if (d->before > 0) {
207 next = list_next_entry(e, list);
208 ret = !list_is_last(&e->list, &map->members) &&
209 next->id == d->refid;
210 } else {
211 ret = prev && prev->id == d->refid;
212 }
213 goto out;
214 }
215 out:
216 rcu_read_unlock();
217 return ret;
218 }
219
220 static void
list_set_init_extensions(struct ip_set * set,const struct ip_set_ext * ext,struct set_elem * e)221 list_set_init_extensions(struct ip_set *set, const struct ip_set_ext *ext,
222 struct set_elem *e)
223 {
224 if (SET_WITH_COUNTER(set))
225 ip_set_init_counter(ext_counter(e, set), ext);
226 if (SET_WITH_COMMENT(set))
227 ip_set_init_comment(set, ext_comment(e, set), ext);
228 if (SET_WITH_SKBINFO(set))
229 ip_set_init_skbinfo(ext_skbinfo(e, set), ext);
230 /* Update timeout last */
231 if (SET_WITH_TIMEOUT(set))
232 ip_set_timeout_set(ext_timeout(e, set), ext->timeout);
233 }
234
235 static int
list_set_uadd(struct ip_set * set,void * value,const struct ip_set_ext * ext,struct ip_set_ext * mext,u32 flags)236 list_set_uadd(struct ip_set *set, void *value, const struct ip_set_ext *ext,
237 struct ip_set_ext *mext, u32 flags)
238 {
239 struct list_set *map = set->data;
240 struct set_adt_elem *d = value;
241 struct set_elem *e, *n, *prev, *next;
242 bool flag_exist = flags & IPSET_FLAG_EXIST;
243
244 /* Find where to add the new entry */
245 n = prev = next = NULL;
246 list_for_each_entry_rcu(e, &map->members, list) {
247 if (SET_WITH_TIMEOUT(set) &&
248 ip_set_timeout_expired(ext_timeout(e, set)))
249 continue;
250 else if (d->id == e->id)
251 n = e;
252 else if (d->before == 0 || e->id != d->refid)
253 continue;
254 else if (d->before > 0)
255 next = e;
256 else
257 prev = e;
258 }
259
260 /* If before/after is used on an empty set */
261 if ((d->before > 0 && !next) ||
262 (d->before < 0 && !prev))
263 return -IPSET_ERR_REF_EXIST;
264
265 /* Re-add already existing element */
266 if (n) {
267 if (!flag_exist)
268 return -IPSET_ERR_EXIST;
269 /* Update extensions */
270 ip_set_ext_destroy(set, n);
271 list_set_init_extensions(set, ext, n);
272
273 /* Set is already added to the list */
274 ip_set_put_byindex(map->net, d->id);
275 return 0;
276 }
277 /* Add new entry */
278 if (d->before == 0) {
279 /* Append */
280 n = list_empty(&map->members) ? NULL :
281 list_last_entry(&map->members, struct set_elem, list);
282 } else if (d->before > 0) {
283 /* Insert after next element */
284 if (!list_is_last(&next->list, &map->members))
285 n = list_next_entry(next, list);
286 } else {
287 /* Insert before prev element */
288 if (prev->list.prev != &map->members)
289 n = list_prev_entry(prev, list);
290 }
291 /* Can we replace a timed out entry? */
292 if (n &&
293 !(SET_WITH_TIMEOUT(set) &&
294 ip_set_timeout_expired(ext_timeout(n, set))))
295 n = NULL;
296
297 e = kzalloc(set->dsize, GFP_ATOMIC);
298 if (!e)
299 return -ENOMEM;
300 e->id = d->id;
301 e->set = set;
302 INIT_LIST_HEAD(&e->list);
303 list_set_init_extensions(set, ext, e);
304 if (n) {
305 list_set_replace(set, e, n);
306 return 0;
307 }
308
309 if (next)
310 list_add_tail_rcu(&e->list, &next->list);
311 else if (prev)
312 list_add_rcu(&e->list, &prev->list);
313 else
314 list_add_tail_rcu(&e->list, &map->members);
315 set->elements++;
316
317 return 0;
318 }
319
320 static int
list_set_udel(struct ip_set * set,void * value,const struct ip_set_ext * ext,struct ip_set_ext * mext,u32 flags)321 list_set_udel(struct ip_set *set, void *value, const struct ip_set_ext *ext,
322 struct ip_set_ext *mext, u32 flags)
323 {
324 struct list_set *map = set->data;
325 struct set_adt_elem *d = value;
326 struct set_elem *e, *n, *next, *prev = NULL;
327
328 list_for_each_entry_safe(e, n, &map->members, list) {
329 if (SET_WITH_TIMEOUT(set) &&
330 ip_set_timeout_expired(ext_timeout(e, set)))
331 continue;
332 else if (e->id != d->id) {
333 prev = e;
334 continue;
335 }
336
337 if (d->before > 0) {
338 next = list_next_entry(e, list);
339 if (list_is_last(&e->list, &map->members) ||
340 next->id != d->refid)
341 return -IPSET_ERR_REF_EXIST;
342 } else if (d->before < 0) {
343 if (!prev || prev->id != d->refid)
344 return -IPSET_ERR_REF_EXIST;
345 }
346 list_set_del(set, e);
347 return 0;
348 }
349 return d->before != 0 ? -IPSET_ERR_REF_EXIST : -IPSET_ERR_EXIST;
350 }
351
352 static int
list_set_uadt(struct ip_set * set,struct nlattr * tb[],enum ipset_adt adt,u32 * lineno,u32 flags,bool retried)353 list_set_uadt(struct ip_set *set, struct nlattr *tb[],
354 enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
355 {
356 struct list_set *map = set->data;
357 ipset_adtfn adtfn = set->variant->adt[adt];
358 struct set_adt_elem e = { .refid = IPSET_INVALID_ID };
359 struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
360 struct ip_set *s;
361 int ret = 0;
362
363 if (tb[IPSET_ATTR_LINENO])
364 *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
365
366 if (unlikely(!tb[IPSET_ATTR_NAME] ||
367 !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
368 return -IPSET_ERR_PROTOCOL;
369
370 ret = ip_set_get_extensions(set, tb, &ext);
371 if (ret)
372 return ret;
373 e.id = ip_set_get_byname(map->net, tb[IPSET_ATTR_NAME], &s);
374 if (e.id == IPSET_INVALID_ID)
375 return -IPSET_ERR_NAME;
376 /* "Loop detection" */
377 if (s->type->features & IPSET_TYPE_NAME) {
378 ret = -IPSET_ERR_LOOP;
379 goto finish;
380 }
381
382 if (tb[IPSET_ATTR_CADT_FLAGS]) {
383 u32 f = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]);
384
385 e.before = f & IPSET_FLAG_BEFORE;
386 }
387
388 if (e.before && !tb[IPSET_ATTR_NAMEREF]) {
389 ret = -IPSET_ERR_BEFORE;
390 goto finish;
391 }
392
393 if (tb[IPSET_ATTR_NAMEREF]) {
394 e.refid = ip_set_get_byname(map->net,
395 tb[IPSET_ATTR_NAMEREF],
396 &s);
397 if (e.refid == IPSET_INVALID_ID) {
398 ret = -IPSET_ERR_NAMEREF;
399 goto finish;
400 }
401 if (!e.before)
402 e.before = -1;
403 }
404 if (adt != IPSET_TEST && SET_WITH_TIMEOUT(set))
405 set_cleanup_entries(set);
406
407 ret = adtfn(set, &e, &ext, &ext, flags);
408
409 finish:
410 if (e.refid != IPSET_INVALID_ID)
411 ip_set_put_byindex(map->net, e.refid);
412 if (adt != IPSET_ADD || ret)
413 ip_set_put_byindex(map->net, e.id);
414
415 return ip_set_eexist(ret, flags) ? 0 : ret;
416 }
417
418 static void
list_set_flush(struct ip_set * set)419 list_set_flush(struct ip_set *set)
420 {
421 struct list_set *map = set->data;
422 struct set_elem *e, *n;
423
424 list_for_each_entry_safe(e, n, &map->members, list)
425 list_set_del(set, e);
426 DEBUG_NET_WARN_ON_ONCE(set->elements > 0);
427 }
428
429 static void
list_set_destroy(struct ip_set * set)430 list_set_destroy(struct ip_set *set)
431 {
432 struct list_set *map = set->data;
433
434 WARN_ON_ONCE(!list_empty(&map->members));
435 kfree(map);
436
437 set->data = NULL;
438 }
439
440 /* Calculate the actual memory size of the set data */
441 static size_t
list_set_memsize(const struct list_set * map,size_t dsize)442 list_set_memsize(const struct list_set *map, size_t dsize)
443 {
444 struct set_elem *e;
445 u32 n = 0;
446
447 rcu_read_lock();
448 list_for_each_entry_rcu(e, &map->members, list)
449 n++;
450 rcu_read_unlock();
451
452 return (sizeof(*map) + n * dsize);
453 }
454
455 static int
list_set_head(struct ip_set * set,struct sk_buff * skb)456 list_set_head(struct ip_set *set, struct sk_buff *skb)
457 {
458 const struct list_set *map = set->data;
459 struct nlattr *nested;
460 size_t memsize = list_set_memsize(map, set->dsize) + atomic64_read(&set->ext_size);
461
462 nested = nla_nest_start(skb, IPSET_ATTR_DATA);
463 if (!nested)
464 goto nla_put_failure;
465 if (nla_put_net32(skb, IPSET_ATTR_SIZE, htonl(map->size)) ||
466 nla_put_net32(skb, IPSET_ATTR_REFERENCES, htonl(set->ref)) ||
467 nla_put_net32(skb, IPSET_ATTR_MEMSIZE, htonl(memsize)) ||
468 nla_put_net32(skb, IPSET_ATTR_ELEMENTS, htonl(set->elements)))
469 goto nla_put_failure;
470 if (unlikely(ip_set_put_flags(skb, set)))
471 goto nla_put_failure;
472 nla_nest_end(skb, nested);
473
474 return 0;
475 nla_put_failure:
476 return -EMSGSIZE;
477 }
478
479 static int
list_set_list(const struct ip_set * set,struct sk_buff * skb,struct netlink_callback * cb)480 list_set_list(const struct ip_set *set,
481 struct sk_buff *skb, struct netlink_callback *cb)
482 {
483 const struct list_set *map = set->data;
484 struct nlattr *atd, *nested;
485 u32 i = 0, first = cb->args[IPSET_CB_ARG0];
486 char name[IPSET_MAXNAMELEN];
487 struct set_elem *e;
488 int ret = 0;
489
490 atd = nla_nest_start(skb, IPSET_ATTR_ADT);
491 if (!atd)
492 return -EMSGSIZE;
493
494 rcu_read_lock();
495 list_for_each_entry_rcu(e, &map->members, list) {
496 if (i < first ||
497 (SET_WITH_TIMEOUT(set) &&
498 ip_set_timeout_expired(ext_timeout(e, set)))) {
499 i++;
500 continue;
501 }
502 nested = nla_nest_start(skb, IPSET_ATTR_DATA);
503 if (!nested)
504 goto nla_put_failure;
505 ip_set_name_byindex(map->net, e->id, name);
506 if (nla_put_string(skb, IPSET_ATTR_NAME, name))
507 goto nla_put_failure;
508 if (ip_set_put_extensions(skb, set, e, true))
509 goto nla_put_failure;
510 nla_nest_end(skb, nested);
511 i++;
512 }
513
514 nla_nest_end(skb, atd);
515 /* Set listing finished */
516 cb->args[IPSET_CB_ARG0] = 0;
517 goto out;
518
519 nla_put_failure:
520 nla_nest_cancel(skb, nested);
521 if (unlikely(i == first)) {
522 nla_nest_cancel(skb, atd);
523 cb->args[IPSET_CB_ARG0] = 0;
524 ret = -EMSGSIZE;
525 } else {
526 cb->args[IPSET_CB_ARG0] = i;
527 nla_nest_end(skb, atd);
528 }
529 out:
530 rcu_read_unlock();
531 return ret;
532 }
533
534 static bool
list_set_same_set(const struct ip_set * a,const struct ip_set * b)535 list_set_same_set(const struct ip_set *a, const struct ip_set *b)
536 {
537 const struct list_set *x = a->data;
538 const struct list_set *y = b->data;
539
540 return x->size == y->size &&
541 a->timeout == b->timeout &&
542 a->extensions == b->extensions;
543 }
544
545 static void
list_set_cancel_gc(struct ip_set * set)546 list_set_cancel_gc(struct ip_set *set)
547 {
548 struct list_set *map = set->data;
549
550 if (SET_WITH_TIMEOUT(set))
551 timer_shutdown_sync(&map->gc);
552
553 /* Flush list to drop references to other ipsets */
554 list_set_flush(set);
555 }
556
557 static const struct ip_set_type_variant set_variant = {
558 .kadt = list_set_kadt,
559 .uadt = list_set_uadt,
560 .adt = {
561 [IPSET_ADD] = list_set_uadd,
562 [IPSET_DEL] = list_set_udel,
563 [IPSET_TEST] = list_set_utest,
564 },
565 .destroy = list_set_destroy,
566 .flush = list_set_flush,
567 .head = list_set_head,
568 .list = list_set_list,
569 .same_set = list_set_same_set,
570 .cancel_gc = list_set_cancel_gc,
571 };
572
573 static void
list_set_gc(struct timer_list * t)574 list_set_gc(struct timer_list *t)
575 {
576 struct list_set *map = timer_container_of(map, t, gc);
577 struct ip_set *set = map->set;
578
579 spin_lock_bh(&set->lock);
580 set_cleanup_entries(set);
581 spin_unlock_bh(&set->lock);
582
583 map->gc.expires = jiffies + IPSET_GC_PERIOD(set->timeout) * HZ;
584 add_timer(&map->gc);
585 }
586
587 static void
list_set_gc_init(struct ip_set * set,void (* gc)(struct timer_list * t))588 list_set_gc_init(struct ip_set *set, void (*gc)(struct timer_list *t))
589 {
590 struct list_set *map = set->data;
591
592 timer_setup(&map->gc, gc, 0);
593 mod_timer(&map->gc, jiffies + IPSET_GC_PERIOD(set->timeout) * HZ);
594 }
595
596 /* Create list:set type of sets */
597
598 static bool
init_list_set(struct net * net,struct ip_set * set,u32 size)599 init_list_set(struct net *net, struct ip_set *set, u32 size)
600 {
601 struct list_set *map;
602
603 map = kzalloc_obj(*map);
604 if (!map)
605 return false;
606
607 map->size = size;
608 map->net = net;
609 map->set = set;
610 INIT_LIST_HEAD(&map->members);
611 set->data = map;
612
613 return true;
614 }
615
616 static struct lock_class_key list_set_lockdep_key;
617
618 static int
list_set_create(struct net * net,struct ip_set * set,struct nlattr * tb[],u32 flags)619 list_set_create(struct net *net, struct ip_set *set, struct nlattr *tb[],
620 u32 flags)
621 {
622 u32 size = IP_SET_LIST_DEFAULT_SIZE;
623
624 if (unlikely(!ip_set_optattr_netorder(tb, IPSET_ATTR_SIZE) ||
625 !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) ||
626 !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
627 return -IPSET_ERR_PROTOCOL;
628
629 if (tb[IPSET_ATTR_SIZE])
630 size = ip_set_get_h32(tb[IPSET_ATTR_SIZE]);
631 if (size < IP_SET_LIST_MIN_SIZE)
632 size = IP_SET_LIST_MIN_SIZE;
633
634 lockdep_set_class(&set->lock, &list_set_lockdep_key);
635 set->variant = &set_variant;
636 set->dsize = ip_set_elem_len(set, tb, sizeof(struct set_elem),
637 __alignof__(struct set_elem));
638 if (!init_list_set(net, set, size))
639 return -ENOMEM;
640 if (tb[IPSET_ATTR_TIMEOUT]) {
641 set->timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
642 list_set_gc_init(set, list_set_gc);
643 }
644 return 0;
645 }
646
647 static struct ip_set_type list_set_type __read_mostly = {
648 .name = "list:set",
649 .protocol = IPSET_PROTOCOL,
650 .features = IPSET_TYPE_NAME | IPSET_DUMP_LAST,
651 .dimension = IPSET_DIM_ONE,
652 .family = NFPROTO_UNSPEC,
653 .revision_min = IPSET_TYPE_REV_MIN,
654 .revision_max = IPSET_TYPE_REV_MAX,
655 .create = list_set_create,
656 .create_policy = {
657 [IPSET_ATTR_SIZE] = { .type = NLA_U32 },
658 [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
659 [IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 },
660 },
661 .adt_policy = {
662 [IPSET_ATTR_NAME] = { .type = NLA_STRING,
663 .len = IPSET_MAXNAMELEN },
664 [IPSET_ATTR_NAMEREF] = { .type = NLA_STRING,
665 .len = IPSET_MAXNAMELEN },
666 [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
667 [IPSET_ATTR_LINENO] = { .type = NLA_U32 },
668 [IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 },
669 [IPSET_ATTR_BYTES] = { .type = NLA_U64 },
670 [IPSET_ATTR_PACKETS] = { .type = NLA_U64 },
671 [IPSET_ATTR_COMMENT] = { .type = NLA_NUL_STRING,
672 .len = IPSET_MAX_COMMENT_SIZE },
673 [IPSET_ATTR_SKBMARK] = { .type = NLA_U64 },
674 [IPSET_ATTR_SKBPRIO] = { .type = NLA_U32 },
675 [IPSET_ATTR_SKBQUEUE] = { .type = NLA_U16 },
676 },
677 .me = THIS_MODULE,
678 };
679
680 static int __init
list_set_init(void)681 list_set_init(void)
682 {
683 return ip_set_type_register(&list_set_type);
684 }
685
686 static void __exit
list_set_fini(void)687 list_set_fini(void)
688 {
689 rcu_barrier();
690 ip_set_type_unregister(&list_set_type);
691 }
692
693 module_init(list_set_init);
694 module_exit(list_set_fini);
695