1/* Copyright (C) 2008-2013 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> 2 * 3 * This program is free software; you can redistribute it and/or modify 4 * it under the terms of the GNU General Public License version 2 as 5 * published by the Free Software Foundation. 6 */ 7 8/* Kernel module implementing an IP set type: the list:set type */ 9 10#include <linux/module.h> 11#include <linux/ip.h> 12#include <linux/skbuff.h> 13#include <linux/errno.h> 14 15#include <linux/netfilter/ipset/ip_set.h> 16#include <linux/netfilter/ipset/ip_set_list.h> 17 18#define REVISION_MIN 0 19#define REVISION_MAX 1 /* Counters support added */ 20 21MODULE_LICENSE("GPL"); 22MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>"); 23IP_SET_MODULE_DESC("list:set", REVISION_MIN, REVISION_MAX); 24MODULE_ALIAS("ip_set_list:set"); 25 26/* Member elements */ 27struct set_elem { 28 ip_set_id_t id; 29}; 30 31struct sett_elem { 32 struct { 33 ip_set_id_t id; 34 } __attribute__ ((aligned)); 35 unsigned long timeout; 36}; 37 38struct setc_elem { 39 struct { 40 ip_set_id_t id; 41 } __attribute__ ((aligned)); 42 struct ip_set_counter counter; 43}; 44 45struct setct_elem { 46 struct { 47 ip_set_id_t id; 48 } __attribute__ ((aligned)); 49 struct ip_set_counter counter; 50 unsigned long timeout; 51}; 52 53struct set_adt_elem { 54 ip_set_id_t id; 55 ip_set_id_t refid; 56 int before; 57}; 58 59/* Type structure */ 60struct list_set { 61 size_t dsize; /* element size */ 62 size_t offset[IPSET_OFFSET_MAX]; /* Offsets to extensions */ 63 u32 size; /* size of set list array */ 64 u32 timeout; /* timeout value */ 65 struct timer_list gc; /* garbage collection */ 66 struct set_elem members[0]; /* the set members */ 67}; 68 69static inline struct set_elem * 70list_set_elem(const struct list_set *map, u32 id) 71{ 72 return (struct set_elem *)((void *)map->members + id * map->dsize); 73} 74 75#define ext_timeout(e, m) \ 76(unsigned long *)((void *)(e) + (m)->offset[IPSET_OFFSET_TIMEOUT]) 77#define ext_counter(e, m) \ 78(struct ip_set_counter *)((void *)(e) + (m)->offset[IPSET_OFFSET_COUNTER]) 79 80static int 81list_set_ktest(struct ip_set *set, const struct sk_buff *skb, 82 const struct xt_action_param *par, 83 struct ip_set_adt_opt *opt, const struct ip_set_ext *ext) 84{ 85 struct list_set *map = set->data; 86 struct set_elem *e; 87 u32 i, cmdflags = opt->cmdflags; 88 int ret; 89 90 /* Don't lookup sub-counters at all */ 91 opt->cmdflags &= ~IPSET_FLAG_MATCH_COUNTERS; 92 if (opt->cmdflags & IPSET_FLAG_SKIP_SUBCOUNTER_UPDATE) 93 opt->cmdflags &= ~IPSET_FLAG_SKIP_COUNTER_UPDATE; 94 for (i = 0; i < map->size; i++) { 95 e = list_set_elem(map, i); 96 if (e->id == IPSET_INVALID_ID) 97 return 0; 98 if (SET_WITH_TIMEOUT(set) && 99 ip_set_timeout_expired(ext_timeout(e, map))) 100 continue; 101 ret = ip_set_test(e->id, skb, par, opt); 102 if (ret > 0) { 103 if (SET_WITH_COUNTER(set)) 104 ip_set_update_counter(ext_counter(e, map), 105 ext, &opt->ext, 106 cmdflags); 107 return ret; 108 } 109 } 110 return 0; 111} 112 113static int 114list_set_kadd(struct ip_set *set, const struct sk_buff *skb, 115 const struct xt_action_param *par, 116 struct ip_set_adt_opt *opt, const struct ip_set_ext *ext) 117{ 118 struct list_set *map = set->data; 119 struct set_elem *e; 120 u32 i; 121 int ret; 122 123 for (i = 0; i < map->size; i++) { 124 e = list_set_elem(map, i); 125 if (e->id == IPSET_INVALID_ID) 126 return 0; 127 if (SET_WITH_TIMEOUT(set) && 128 ip_set_timeout_expired(ext_timeout(e, map))) 129 continue; 130 ret = ip_set_add(e->id, skb, par, opt); 131 if (ret == 0) 132 return ret; 133 } 134 return 0; 135} 136 137static int 138list_set_kdel(struct ip_set *set, const struct sk_buff *skb, 139 const struct xt_action_param *par, 140 struct ip_set_adt_opt *opt, const struct ip_set_ext *ext) 141{ 142 struct list_set *map = set->data; 143 struct set_elem *e; 144 u32 i; 145 int ret; 146 147 for (i = 0; i < map->size; i++) { 148 e = list_set_elem(map, i); 149 if (e->id == IPSET_INVALID_ID) 150 return 0; 151 if (SET_WITH_TIMEOUT(set) && 152 ip_set_timeout_expired(ext_timeout(e, map))) 153 continue; 154 ret = ip_set_del(e->id, skb, par, opt); 155 if (ret == 0) 156 return ret; 157 } 158 return 0; 159} 160 161static int 162list_set_kadt(struct ip_set *set, const struct sk_buff *skb, 163 const struct xt_action_param *par, 164 enum ipset_adt adt, struct ip_set_adt_opt *opt) 165{ 166 struct list_set *map = set->data; 167 struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, map); 168 169 switch (adt) { 170 case IPSET_TEST: 171 return list_set_ktest(set, skb, par, opt, &ext); 172 case IPSET_ADD: 173 return list_set_kadd(set, skb, par, opt, &ext); 174 case IPSET_DEL: 175 return list_set_kdel(set, skb, par, opt, &ext); 176 default: 177 break; 178 } 179 return -EINVAL; 180} 181 182static bool 183id_eq(const struct ip_set *set, u32 i, ip_set_id_t id) 184{ 185 const struct list_set *map = set->data; 186 const struct set_elem *e; 187 188 if (i >= map->size) 189 return 0; 190 191 e = list_set_elem(map, i); 192 return !!(e->id == id && 193 !(SET_WITH_TIMEOUT(set) && 194 ip_set_timeout_expired(ext_timeout(e, map)))); 195} 196 197static int 198list_set_add(struct ip_set *set, u32 i, struct set_adt_elem *d, 199 const struct ip_set_ext *ext) 200{ 201 struct list_set *map = set->data; 202 struct set_elem *e = list_set_elem(map, i); 203 204 if (e->id != IPSET_INVALID_ID) { 205 if (i == map->size - 1) 206 /* Last element replaced: e.g. add new,before,last */ 207 ip_set_put_byindex(e->id); 208 else { 209 struct set_elem *x = list_set_elem(map, map->size - 1); 210 211 /* Last element pushed off */ 212 if (x->id != IPSET_INVALID_ID) 213 ip_set_put_byindex(x->id); 214 memmove(list_set_elem(map, i + 1), e, 215 map->dsize * (map->size - (i + 1))); 216 } 217 } 218 219 e->id = d->id; 220 if (SET_WITH_TIMEOUT(set)) 221 ip_set_timeout_set(ext_timeout(e, map), ext->timeout); 222 if (SET_WITH_COUNTER(set)) 223 ip_set_init_counter(ext_counter(e, map), ext); 224 return 0; 225} 226 227static int 228list_set_del(struct ip_set *set, u32 i) 229{ 230 struct list_set *map = set->data; 231 struct set_elem *e = list_set_elem(map, i); 232 233 ip_set_put_byindex(e->id); 234 235 if (i < map->size - 1) 236 memmove(e, list_set_elem(map, i + 1), 237 map->dsize * (map->size - (i + 1))); 238 239 /* Last element */ 240 e = list_set_elem(map, map->size - 1); 241 e->id = IPSET_INVALID_ID; 242 return 0; 243} 244 245static void 246set_cleanup_entries(struct ip_set *set) 247{ 248 struct list_set *map = set->data; 249 struct set_elem *e; 250 u32 i; 251 252 for (i = 0; i < map->size; i++) { 253 e = list_set_elem(map, i); 254 if (e->id != IPSET_INVALID_ID && 255 ip_set_timeout_expired(ext_timeout(e, map))) 256 list_set_del(set, i); 257 } 258} 259 260static int 261list_set_utest(struct ip_set *set, void *value, const struct ip_set_ext *ext, 262 struct ip_set_ext *mext, u32 flags) 263{ 264 struct list_set *map = set->data; 265 struct set_adt_elem *d = value; 266 struct set_elem *e; 267 u32 i; 268 int ret; 269 270 for (i = 0; i < map->size; i++) { 271 e = list_set_elem(map, i); 272 if (e->id == IPSET_INVALID_ID) 273 return 0; 274 else if (SET_WITH_TIMEOUT(set) && 275 ip_set_timeout_expired(ext_timeout(e, map))) 276 continue; 277 else if (e->id != d->id) 278 continue; 279 280 if (d->before == 0) 281 return 1; 282 else if (d->before > 0) 283 ret = id_eq(set, i + 1, d->refid); 284 else 285 ret = i > 0 && id_eq(set, i - 1, d->refid); 286 return ret; 287 } 288 return 0; 289} 290 291 292static int 293list_set_uadd(struct ip_set *set, void *value, const struct ip_set_ext *ext, 294 struct ip_set_ext *mext, u32 flags) 295{ 296 struct list_set *map = set->data; 297 struct set_adt_elem *d = value; 298 struct set_elem *e; 299 bool flag_exist = flags & IPSET_FLAG_EXIST; 300 u32 i, ret = 0; 301 302 /* Check already added element */ 303 for (i = 0; i < map->size; i++) { 304 e = list_set_elem(map, i); 305 if (e->id == IPSET_INVALID_ID) 306 goto insert; 307 else if (SET_WITH_TIMEOUT(set) && 308 ip_set_timeout_expired(ext_timeout(e, map))) 309 continue; 310 else if (e->id != d->id) 311 continue; 312 313 if ((d->before > 1 && !id_eq(set, i + 1, d->refid)) || 314 (d->before < 0 && 315 (i == 0 || !id_eq(set, i - 1, d->refid)))) 316 /* Before/after doesn't match */ 317 return -IPSET_ERR_REF_EXIST; 318 if (!flag_exist) 319 /* Can't re-add */ 320 return -IPSET_ERR_EXIST; 321 /* Update extensions */ 322 if (SET_WITH_TIMEOUT(set)) 323 ip_set_timeout_set(ext_timeout(e, map), ext->timeout); 324 if (SET_WITH_COUNTER(set)) 325 ip_set_init_counter(ext_counter(e, map), ext); 326 /* Set is already added to the list */ 327 ip_set_put_byindex(d->id); 328 return 0; 329 } 330insert: 331 ret = -IPSET_ERR_LIST_FULL; 332 for (i = 0; i < map->size && ret == -IPSET_ERR_LIST_FULL; i++) { 333 e = list_set_elem(map, i); 334 if (e->id == IPSET_INVALID_ID) 335 ret = d->before != 0 ? -IPSET_ERR_REF_EXIST 336 : list_set_add(set, i, d, ext); 337 else if (e->id != d->refid) 338 continue; 339 else if (d->before > 0) 340 ret = list_set_add(set, i, d, ext); 341 else if (i + 1 < map->size) 342 ret = list_set_add(set, i + 1, d, ext); 343 } 344 345 return ret; 346} 347 348static int 349list_set_udel(struct ip_set *set, void *value, const struct ip_set_ext *ext, 350 struct ip_set_ext *mext, u32 flags) 351{ 352 struct list_set *map = set->data; 353 struct set_adt_elem *d = value; 354 struct set_elem *e; 355 u32 i; 356 357 for (i = 0; i < map->size; i++) { 358 e = list_set_elem(map, i); 359 if (e->id == IPSET_INVALID_ID) 360 return d->before != 0 ? -IPSET_ERR_REF_EXIST 361 : -IPSET_ERR_EXIST; 362 else if (SET_WITH_TIMEOUT(set) && 363 ip_set_timeout_expired(ext_timeout(e, map))) 364 continue; 365 else if (e->id != d->id) 366 continue; 367 368 if (d->before == 0) 369 return list_set_del(set, i); 370 else if (d->before > 0) { 371 if (!id_eq(set, i + 1, d->refid)) 372 return -IPSET_ERR_REF_EXIST; 373 return list_set_del(set, i); 374 } else if (i == 0 || !id_eq(set, i - 1, d->refid)) 375 return -IPSET_ERR_REF_EXIST; 376 else 377 return list_set_del(set, i); 378 } 379 return -IPSET_ERR_EXIST; 380} 381 382static int 383list_set_uadt(struct ip_set *set, struct nlattr *tb[], 384 enum ipset_adt adt, u32 *lineno, u32 flags, bool retried) 385{ 386 struct list_set *map = set->data; 387 ipset_adtfn adtfn = set->variant->adt[adt]; 388 struct set_adt_elem e = { .refid = IPSET_INVALID_ID }; 389 struct ip_set_ext ext = IP_SET_INIT_UEXT(map); 390 struct ip_set *s; 391 int ret = 0; 392 393 if (unlikely(!tb[IPSET_ATTR_NAME] || 394 !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) || 395 !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS) || 396 !ip_set_optattr_netorder(tb, IPSET_ATTR_PACKETS) || 397 !ip_set_optattr_netorder(tb, IPSET_ATTR_BYTES))) 398 return -IPSET_ERR_PROTOCOL; 399 400 if (tb[IPSET_ATTR_LINENO]) 401 *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]); 402 403 ret = ip_set_get_extensions(set, tb, &ext); 404 if (ret) 405 return ret; 406 e.id = ip_set_get_byname(nla_data(tb[IPSET_ATTR_NAME]), &s); 407 if (e.id == IPSET_INVALID_ID) 408 return -IPSET_ERR_NAME; 409 /* "Loop detection" */ 410 if (s->type->features & IPSET_TYPE_NAME) { 411 ret = -IPSET_ERR_LOOP; 412 goto finish; 413 } 414 415 if (tb[IPSET_ATTR_CADT_FLAGS]) { 416 u32 f = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]); 417 e.before = f & IPSET_FLAG_BEFORE; 418 } 419 420 if (e.before && !tb[IPSET_ATTR_NAMEREF]) { 421 ret = -IPSET_ERR_BEFORE; 422 goto finish; 423 } 424 425 if (tb[IPSET_ATTR_NAMEREF]) { 426 e.refid = ip_set_get_byname(nla_data(tb[IPSET_ATTR_NAMEREF]), 427 &s); 428 if (e.refid == IPSET_INVALID_ID) { 429 ret = -IPSET_ERR_NAMEREF; 430 goto finish; 431 } 432 if (!e.before) 433 e.before = -1; 434 } 435 if (adt != IPSET_TEST && SET_WITH_TIMEOUT(set)) 436 set_cleanup_entries(set); 437 438 ret = adtfn(set, &e, &ext, &ext, flags); 439 440finish: 441 if (e.refid != IPSET_INVALID_ID) 442 ip_set_put_byindex(e.refid); 443 if (adt != IPSET_ADD || ret) 444 ip_set_put_byindex(e.id); 445 446 return ip_set_eexist(ret, flags) ? 0 : ret; 447} 448 449static void 450list_set_flush(struct ip_set *set) 451{ 452 struct list_set *map = set->data; 453 struct set_elem *e; 454 u32 i; 455 456 for (i = 0; i < map->size; i++) { 457 e = list_set_elem(map, i); 458 if (e->id != IPSET_INVALID_ID) { 459 ip_set_put_byindex(e->id); 460 e->id = IPSET_INVALID_ID; 461 } 462 } 463} 464 465static void 466list_set_destroy(struct ip_set *set) 467{ 468 struct list_set *map = set->data; 469 470 if (SET_WITH_TIMEOUT(set)) 471 del_timer_sync(&map->gc); 472 list_set_flush(set); 473 kfree(map); 474 475 set->data = NULL; 476} 477 478static int 479list_set_head(struct ip_set *set, struct sk_buff *skb) 480{ 481 const struct list_set *map = set->data; 482 struct nlattr *nested; 483 484 nested = ipset_nest_start(skb, IPSET_ATTR_DATA); 485 if (!nested) 486 goto nla_put_failure; 487 if (nla_put_net32(skb, IPSET_ATTR_SIZE, htonl(map->size)) || 488 (SET_WITH_TIMEOUT(set) && 489 nla_put_net32(skb, IPSET_ATTR_TIMEOUT, htonl(map->timeout))) || 490 (SET_WITH_COUNTER(set) && 491 nla_put_net32(skb, IPSET_ATTR_CADT_FLAGS, 492 htonl(IPSET_FLAG_WITH_COUNTERS))) || 493 nla_put_net32(skb, IPSET_ATTR_REFERENCES, htonl(set->ref - 1)) || 494 nla_put_net32(skb, IPSET_ATTR_MEMSIZE, 495 htonl(sizeof(*map) + map->size * map->dsize))) 496 goto nla_put_failure; 497 ipset_nest_end(skb, nested); 498 499 return 0; 500nla_put_failure: 501 return -EMSGSIZE; 502} 503 504static int 505list_set_list(const struct ip_set *set, 506 struct sk_buff *skb, struct netlink_callback *cb) 507{ 508 const struct list_set *map = set->data; 509 struct nlattr *atd, *nested; 510 u32 i, first = cb->args[2]; 511 const struct set_elem *e; 512 513 atd = ipset_nest_start(skb, IPSET_ATTR_ADT); 514 if (!atd) 515 return -EMSGSIZE; 516 for (; cb->args[2] < map->size; cb->args[2]++) { 517 i = cb->args[2]; 518 e = list_set_elem(map, i); 519 if (e->id == IPSET_INVALID_ID) 520 goto finish; 521 if (SET_WITH_TIMEOUT(set) && 522 ip_set_timeout_expired(ext_timeout(e, map))) 523 continue; 524 nested = ipset_nest_start(skb, IPSET_ATTR_DATA); 525 if (!nested) { 526 if (i == first) { 527 nla_nest_cancel(skb, atd); 528 return -EMSGSIZE; 529 } else 530 goto nla_put_failure; 531 } 532 if (nla_put_string(skb, IPSET_ATTR_NAME, 533 ip_set_name_byindex(e->id))) 534 goto nla_put_failure; 535 if (SET_WITH_TIMEOUT(set) && 536 nla_put_net32(skb, IPSET_ATTR_TIMEOUT, 537 htonl(ip_set_timeout_get( 538 ext_timeout(e, map))))) 539 goto nla_put_failure; 540 if (SET_WITH_COUNTER(set) && 541 ip_set_put_counter(skb, ext_counter(e, map))) 542 goto nla_put_failure; 543 ipset_nest_end(skb, nested); 544 } 545finish: 546 ipset_nest_end(skb, atd); 547 /* Set listing finished */ 548 cb->args[2] = 0; 549 return 0; 550 551nla_put_failure: 552 nla_nest_cancel(skb, nested); 553 ipset_nest_end(skb, atd); 554 if (unlikely(i == first)) { 555 cb->args[2] = 0; 556 return -EMSGSIZE; 557 } 558 return 0; 559} 560 561static bool 562list_set_same_set(const struct ip_set *a, const struct ip_set *b) 563{ 564 const struct list_set *x = a->data; 565 const struct list_set *y = b->data; 566 567 return x->size == y->size && 568 x->timeout == y->timeout && 569 a->extensions == b->extensions; 570} 571 572static const struct ip_set_type_variant set_variant = { 573 .kadt = list_set_kadt, 574 .uadt = list_set_uadt, 575 .adt = { 576 [IPSET_ADD] = list_set_uadd, 577 [IPSET_DEL] = list_set_udel, 578 [IPSET_TEST] = list_set_utest, 579 }, 580 .destroy = list_set_destroy, 581 .flush = list_set_flush, 582 .head = list_set_head, 583 .list = list_set_list, 584 .same_set = list_set_same_set, 585}; 586 587static void 588list_set_gc(unsigned long ul_set) 589{ 590 struct ip_set *set = (struct ip_set *) ul_set; 591 struct list_set *map = set->data; 592 593 write_lock_bh(&set->lock); 594 set_cleanup_entries(set); 595 write_unlock_bh(&set->lock); 596 597 map->gc.expires = jiffies + IPSET_GC_PERIOD(map->timeout) * HZ; 598 add_timer(&map->gc); 599} 600 601static void 602list_set_gc_init(struct ip_set *set, void (*gc)(unsigned long ul_set)) 603{ 604 struct list_set *map = set->data; 605 606 init_timer(&map->gc); 607 map->gc.data = (unsigned long) set; 608 map->gc.function = gc; 609 map->gc.expires = jiffies + IPSET_GC_PERIOD(map->timeout) * HZ; 610 add_timer(&map->gc); 611} 612 613/* Create list:set type of sets */ 614 615static struct list_set * 616init_list_set(struct ip_set *set, u32 size, size_t dsize, 617 unsigned long timeout) 618{ 619 struct list_set *map; 620 struct set_elem *e; 621 u32 i; 622 623 map = kzalloc(sizeof(*map) + size * dsize, GFP_KERNEL); 624 if (!map) 625 return NULL; 626 627 map->size = size; 628 map->dsize = dsize; 629 map->timeout = timeout; 630 set->data = map; 631 632 for (i = 0; i < size; i++) { 633 e = list_set_elem(map, i); 634 e->id = IPSET_INVALID_ID; 635 } 636 637 return map; 638} 639 640static int 641list_set_create(struct ip_set *set, struct nlattr *tb[], u32 flags) 642{ 643 struct list_set *map; 644 u32 size = IP_SET_LIST_DEFAULT_SIZE, cadt_flags = 0; 645 unsigned long timeout = 0; 646 647 if (unlikely(!ip_set_optattr_netorder(tb, IPSET_ATTR_SIZE) || 648 !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT) || 649 !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS))) 650 return -IPSET_ERR_PROTOCOL; 651 652 if (tb[IPSET_ATTR_SIZE]) 653 size = ip_set_get_h32(tb[IPSET_ATTR_SIZE]); 654 if (size < IP_SET_LIST_MIN_SIZE) 655 size = IP_SET_LIST_MIN_SIZE; 656 657 if (tb[IPSET_ATTR_CADT_FLAGS]) 658 cadt_flags = ip_set_get_h32(tb[IPSET_ATTR_CADT_FLAGS]); 659 if (tb[IPSET_ATTR_TIMEOUT]) 660 timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]); 661 set->variant = &set_variant; 662 if (cadt_flags & IPSET_FLAG_WITH_COUNTERS) { 663 set->extensions |= IPSET_EXT_COUNTER; 664 if (tb[IPSET_ATTR_TIMEOUT]) { 665 map = init_list_set(set, size, 666 sizeof(struct setct_elem), timeout); 667 if (!map) 668 return -ENOMEM; 669 set->extensions |= IPSET_EXT_TIMEOUT; 670 map->offset[IPSET_OFFSET_TIMEOUT] = 671 offsetof(struct setct_elem, timeout); 672 map->offset[IPSET_OFFSET_COUNTER] = 673 offsetof(struct setct_elem, counter); 674 list_set_gc_init(set, list_set_gc); 675 } else { 676 map = init_list_set(set, size, 677 sizeof(struct setc_elem), 0); 678 if (!map) 679 return -ENOMEM; 680 map->offset[IPSET_OFFSET_COUNTER] = 681 offsetof(struct setc_elem, counter); 682 } 683 } else if (tb[IPSET_ATTR_TIMEOUT]) { 684 map = init_list_set(set, size, 685 sizeof(struct sett_elem), timeout); 686 if (!map) 687 return -ENOMEM; 688 set->extensions |= IPSET_EXT_TIMEOUT; 689 map->offset[IPSET_OFFSET_TIMEOUT] = 690 offsetof(struct sett_elem, timeout); 691 list_set_gc_init(set, list_set_gc); 692 } else { 693 map = init_list_set(set, size, sizeof(struct set_elem), 0); 694 if (!map) 695 return -ENOMEM; 696 } 697 return 0; 698} 699 700static struct ip_set_type list_set_type __read_mostly = { 701 .name = "list:set", 702 .protocol = IPSET_PROTOCOL, 703 .features = IPSET_TYPE_NAME | IPSET_DUMP_LAST, 704 .dimension = IPSET_DIM_ONE, 705 .family = NFPROTO_UNSPEC, 706 .revision_min = REVISION_MIN, 707 .revision_max = REVISION_MAX, 708 .create = list_set_create, 709 .create_policy = { 710 [IPSET_ATTR_SIZE] = { .type = NLA_U32 }, 711 [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 }, 712 [IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 }, 713 }, 714 .adt_policy = { 715 [IPSET_ATTR_NAME] = { .type = NLA_STRING, 716 .len = IPSET_MAXNAMELEN }, 717 [IPSET_ATTR_NAMEREF] = { .type = NLA_STRING, 718 .len = IPSET_MAXNAMELEN }, 719 [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 }, 720 [IPSET_ATTR_LINENO] = { .type = NLA_U32 }, 721 [IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 }, 722 [IPSET_ATTR_BYTES] = { .type = NLA_U64 }, 723 [IPSET_ATTR_PACKETS] = { .type = NLA_U64 }, 724 }, 725 .me = THIS_MODULE, 726}; 727 728static int __init 729list_set_init(void) 730{ 731 return ip_set_type_register(&list_set_type); 732} 733 734static void __exit 735list_set_fini(void) 736{ 737 ip_set_type_unregister(&list_set_type); 738} 739 740module_init(list_set_init); 741module_exit(list_set_fini); 742