1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2008-2014 Patrick McHardy <kaber@trash.net> 4 * 5 * Development of this code funded by Astaro AG (http://www.astaro.com/) 6 */ 7 8 #include <linux/kernel.h> 9 #include <linux/init.h> 10 #include <linux/module.h> 11 #include <linux/list.h> 12 #include <linux/log2.h> 13 #include <linux/jhash.h> 14 #include <linux/netlink.h> 15 #include <linux/workqueue.h> 16 #include <linux/rhashtable.h> 17 #include <linux/netfilter.h> 18 #include <linux/netfilter/nf_tables.h> 19 #include <net/netfilter/nf_tables_core.h> 20 21 /* We target a hash table size of 4, element hint is 75% of final size */ 22 #define NFT_RHASH_ELEMENT_HINT 3 23 24 struct nft_rhash { 25 struct rhashtable ht; 26 struct delayed_work gc_work; 27 }; 28 29 struct nft_rhash_elem { 30 struct rhash_head node; 31 struct nft_set_ext ext; 32 }; 33 34 struct nft_rhash_cmp_arg { 35 const struct nft_set *set; 36 const u32 *key; 37 u8 genmask; 38 }; 39 40 static inline u32 nft_rhash_key(const void *data, u32 len, u32 seed) 41 { 42 const struct nft_rhash_cmp_arg *arg = data; 43 44 return jhash(arg->key, len, seed); 45 } 46 47 static inline u32 nft_rhash_obj(const void *data, u32 len, u32 seed) 48 { 49 const struct nft_rhash_elem *he = data; 50 51 return jhash(nft_set_ext_key(&he->ext), len, seed); 52 } 53 54 static inline int nft_rhash_cmp(struct rhashtable_compare_arg *arg, 55 const void *ptr) 56 { 57 const struct nft_rhash_cmp_arg *x = arg->key; 58 const struct nft_rhash_elem *he = ptr; 59 60 if (memcmp(nft_set_ext_key(&he->ext), x->key, x->set->klen)) 61 return 1; 62 if (nft_set_elem_is_dead(&he->ext)) 63 return 1; 64 if (nft_set_elem_expired(&he->ext)) 65 return 1; 66 if (!nft_set_elem_active(&he->ext, x->genmask)) 67 return 1; 68 return 0; 69 } 70 71 static const struct rhashtable_params nft_rhash_params = { 72 .head_offset = offsetof(struct nft_rhash_elem, node), 73 .hashfn = nft_rhash_key, 74 .obj_hashfn = nft_rhash_obj, 75 .obj_cmpfn = nft_rhash_cmp, 76 .automatic_shrinking = true, 77 }; 78 79 INDIRECT_CALLABLE_SCOPE 80 bool nft_rhash_lookup(const struct net *net, const struct nft_set *set, 81 const u32 *key, const struct nft_set_ext **ext) 82 { 83 struct nft_rhash *priv = nft_set_priv(set); 84 const struct nft_rhash_elem *he; 85 struct nft_rhash_cmp_arg arg = { 86 .genmask = nft_genmask_cur(net), 87 .set = set, 88 .key = key, 89 }; 90 91 he = rhashtable_lookup(&priv->ht, &arg, nft_rhash_params); 92 if (he != NULL) 93 *ext = &he->ext; 94 95 return !!he; 96 } 97 98 static void *nft_rhash_get(const struct net *net, const struct nft_set *set, 99 const struct nft_set_elem *elem, unsigned int flags) 100 { 101 struct nft_rhash *priv = nft_set_priv(set); 102 struct nft_rhash_elem *he; 103 struct nft_rhash_cmp_arg arg = { 104 .genmask = nft_genmask_cur(net), 105 .set = set, 106 .key = elem->key.val.data, 107 }; 108 109 he = rhashtable_lookup(&priv->ht, &arg, nft_rhash_params); 110 if (he != NULL) 111 return he; 112 113 return ERR_PTR(-ENOENT); 114 } 115 116 static bool nft_rhash_update(struct nft_set *set, const u32 *key, 117 void *(*new)(struct nft_set *, 118 const struct nft_expr *, 119 struct nft_regs *regs), 120 const struct nft_expr *expr, 121 struct nft_regs *regs, 122 const struct nft_set_ext **ext) 123 { 124 struct nft_rhash *priv = nft_set_priv(set); 125 struct nft_rhash_elem *he, *prev; 126 struct nft_rhash_cmp_arg arg = { 127 .genmask = NFT_GENMASK_ANY, 128 .set = set, 129 .key = key, 130 }; 131 132 he = rhashtable_lookup(&priv->ht, &arg, nft_rhash_params); 133 if (he != NULL) 134 goto out; 135 136 he = new(set, expr, regs); 137 if (he == NULL) 138 goto err1; 139 140 prev = rhashtable_lookup_get_insert_key(&priv->ht, &arg, &he->node, 141 nft_rhash_params); 142 if (IS_ERR(prev)) 143 goto err2; 144 145 /* Another cpu may race to insert the element with the same key */ 146 if (prev) { 147 nft_set_elem_destroy(set, he, true); 148 atomic_dec(&set->nelems); 149 he = prev; 150 } 151 152 out: 153 *ext = &he->ext; 154 return true; 155 156 err2: 157 nft_set_elem_destroy(set, he, true); 158 atomic_dec(&set->nelems); 159 err1: 160 return false; 161 } 162 163 static int nft_rhash_insert(const struct net *net, const struct nft_set *set, 164 const struct nft_set_elem *elem, 165 struct nft_set_ext **ext) 166 { 167 struct nft_rhash *priv = nft_set_priv(set); 168 struct nft_rhash_elem *he = elem->priv; 169 struct nft_rhash_cmp_arg arg = { 170 .genmask = nft_genmask_next(net), 171 .set = set, 172 .key = elem->key.val.data, 173 }; 174 struct nft_rhash_elem *prev; 175 176 prev = rhashtable_lookup_get_insert_key(&priv->ht, &arg, &he->node, 177 nft_rhash_params); 178 if (IS_ERR(prev)) 179 return PTR_ERR(prev); 180 if (prev) { 181 *ext = &prev->ext; 182 return -EEXIST; 183 } 184 return 0; 185 } 186 187 static void nft_rhash_activate(const struct net *net, const struct nft_set *set, 188 const struct nft_set_elem *elem) 189 { 190 struct nft_rhash_elem *he = elem->priv; 191 192 nft_set_elem_change_active(net, set, &he->ext); 193 } 194 195 static bool nft_rhash_flush(const struct net *net, 196 const struct nft_set *set, void *priv) 197 { 198 struct nft_rhash_elem *he = priv; 199 200 nft_set_elem_change_active(net, set, &he->ext); 201 202 return true; 203 } 204 205 static void *nft_rhash_deactivate(const struct net *net, 206 const struct nft_set *set, 207 const struct nft_set_elem *elem) 208 { 209 struct nft_rhash *priv = nft_set_priv(set); 210 struct nft_rhash_elem *he; 211 struct nft_rhash_cmp_arg arg = { 212 .genmask = nft_genmask_next(net), 213 .set = set, 214 .key = elem->key.val.data, 215 }; 216 217 rcu_read_lock(); 218 he = rhashtable_lookup(&priv->ht, &arg, nft_rhash_params); 219 if (he) 220 nft_set_elem_change_active(net, set, &he->ext); 221 222 rcu_read_unlock(); 223 224 return he; 225 } 226 227 static void nft_rhash_remove(const struct net *net, 228 const struct nft_set *set, 229 const struct nft_set_elem *elem) 230 { 231 struct nft_rhash *priv = nft_set_priv(set); 232 struct nft_rhash_elem *he = elem->priv; 233 234 rhashtable_remove_fast(&priv->ht, &he->node, nft_rhash_params); 235 } 236 237 static bool nft_rhash_delete(const struct nft_set *set, 238 const u32 *key) 239 { 240 struct nft_rhash *priv = nft_set_priv(set); 241 struct nft_rhash_cmp_arg arg = { 242 .genmask = NFT_GENMASK_ANY, 243 .set = set, 244 .key = key, 245 }; 246 struct nft_rhash_elem *he; 247 248 he = rhashtable_lookup(&priv->ht, &arg, nft_rhash_params); 249 if (he == NULL) 250 return false; 251 252 nft_set_elem_dead(&he->ext); 253 254 return true; 255 } 256 257 static void nft_rhash_walk(const struct nft_ctx *ctx, struct nft_set *set, 258 struct nft_set_iter *iter) 259 { 260 struct nft_rhash *priv = nft_set_priv(set); 261 struct nft_rhash_elem *he; 262 struct rhashtable_iter hti; 263 struct nft_set_elem elem; 264 265 rhashtable_walk_enter(&priv->ht, &hti); 266 rhashtable_walk_start(&hti); 267 268 while ((he = rhashtable_walk_next(&hti))) { 269 if (IS_ERR(he)) { 270 if (PTR_ERR(he) != -EAGAIN) { 271 iter->err = PTR_ERR(he); 272 break; 273 } 274 275 continue; 276 } 277 278 if (iter->count < iter->skip) 279 goto cont; 280 if (!nft_set_elem_active(&he->ext, iter->genmask)) 281 goto cont; 282 283 elem.priv = he; 284 285 iter->err = iter->fn(ctx, set, iter, &elem); 286 if (iter->err < 0) 287 break; 288 289 cont: 290 iter->count++; 291 } 292 rhashtable_walk_stop(&hti); 293 rhashtable_walk_exit(&hti); 294 } 295 296 static bool nft_rhash_expr_needs_gc_run(const struct nft_set *set, 297 struct nft_set_ext *ext) 298 { 299 struct nft_set_elem_expr *elem_expr = nft_set_ext_expr(ext); 300 struct nft_expr *expr; 301 u32 size; 302 303 nft_setelem_expr_foreach(expr, elem_expr, size) { 304 if (expr->ops->gc && 305 expr->ops->gc(read_pnet(&set->net), expr)) 306 return true; 307 } 308 309 return false; 310 } 311 312 static void nft_rhash_gc(struct work_struct *work) 313 { 314 struct nftables_pernet *nft_net; 315 struct nft_set *set; 316 struct nft_rhash_elem *he; 317 struct nft_rhash *priv; 318 struct rhashtable_iter hti; 319 struct nft_trans_gc *gc; 320 struct net *net; 321 u32 gc_seq; 322 323 priv = container_of(work, struct nft_rhash, gc_work.work); 324 set = nft_set_container_of(priv); 325 net = read_pnet(&set->net); 326 nft_net = nft_pernet(net); 327 gc_seq = READ_ONCE(nft_net->gc_seq); 328 329 if (nft_set_gc_is_pending(set)) 330 goto done; 331 332 gc = nft_trans_gc_alloc(set, gc_seq, GFP_KERNEL); 333 if (!gc) 334 goto done; 335 336 rhashtable_walk_enter(&priv->ht, &hti); 337 rhashtable_walk_start(&hti); 338 339 while ((he = rhashtable_walk_next(&hti))) { 340 if (IS_ERR(he)) { 341 nft_trans_gc_destroy(gc); 342 gc = NULL; 343 goto try_later; 344 } 345 346 /* Ruleset has been updated, try later. */ 347 if (READ_ONCE(nft_net->gc_seq) != gc_seq) { 348 nft_trans_gc_destroy(gc); 349 gc = NULL; 350 goto try_later; 351 } 352 353 if (nft_set_elem_is_dead(&he->ext)) 354 goto dead_elem; 355 356 if (nft_set_ext_exists(&he->ext, NFT_SET_EXT_EXPRESSIONS) && 357 nft_rhash_expr_needs_gc_run(set, &he->ext)) 358 goto needs_gc_run; 359 360 if (!nft_set_elem_expired(&he->ext)) 361 continue; 362 needs_gc_run: 363 nft_set_elem_dead(&he->ext); 364 dead_elem: 365 gc = nft_trans_gc_queue_async(gc, gc_seq, GFP_ATOMIC); 366 if (!gc) 367 goto try_later; 368 369 nft_trans_gc_elem_add(gc, he); 370 } 371 372 gc = nft_trans_gc_catchall_async(gc, gc_seq); 373 374 try_later: 375 /* catchall list iteration requires rcu read side lock. */ 376 rhashtable_walk_stop(&hti); 377 rhashtable_walk_exit(&hti); 378 379 if (gc) 380 nft_trans_gc_queue_async_done(gc); 381 382 done: 383 queue_delayed_work(system_power_efficient_wq, &priv->gc_work, 384 nft_set_gc_interval(set)); 385 } 386 387 static u64 nft_rhash_privsize(const struct nlattr * const nla[], 388 const struct nft_set_desc *desc) 389 { 390 return sizeof(struct nft_rhash); 391 } 392 393 static void nft_rhash_gc_init(const struct nft_set *set) 394 { 395 struct nft_rhash *priv = nft_set_priv(set); 396 397 queue_delayed_work(system_power_efficient_wq, &priv->gc_work, 398 nft_set_gc_interval(set)); 399 } 400 401 static int nft_rhash_init(const struct nft_set *set, 402 const struct nft_set_desc *desc, 403 const struct nlattr * const tb[]) 404 { 405 struct nft_rhash *priv = nft_set_priv(set); 406 struct rhashtable_params params = nft_rhash_params; 407 int err; 408 409 params.nelem_hint = desc->size ?: NFT_RHASH_ELEMENT_HINT; 410 params.key_len = set->klen; 411 412 err = rhashtable_init(&priv->ht, ¶ms); 413 if (err < 0) 414 return err; 415 416 INIT_DEFERRABLE_WORK(&priv->gc_work, nft_rhash_gc); 417 if (set->flags & (NFT_SET_TIMEOUT | NFT_SET_EVAL)) 418 nft_rhash_gc_init(set); 419 420 return 0; 421 } 422 423 struct nft_rhash_ctx { 424 const struct nft_ctx ctx; 425 const struct nft_set *set; 426 }; 427 428 static void nft_rhash_elem_destroy(void *ptr, void *arg) 429 { 430 struct nft_rhash_ctx *rhash_ctx = arg; 431 432 nf_tables_set_elem_destroy(&rhash_ctx->ctx, rhash_ctx->set, ptr); 433 } 434 435 static void nft_rhash_destroy(const struct nft_ctx *ctx, 436 const struct nft_set *set) 437 { 438 struct nft_rhash *priv = nft_set_priv(set); 439 struct nft_rhash_ctx rhash_ctx = { 440 .ctx = *ctx, 441 .set = set, 442 }; 443 444 cancel_delayed_work_sync(&priv->gc_work); 445 rhashtable_free_and_destroy(&priv->ht, nft_rhash_elem_destroy, 446 (void *)&rhash_ctx); 447 } 448 449 /* Number of buckets is stored in u32, so cap our result to 1U<<31 */ 450 #define NFT_MAX_BUCKETS (1U << 31) 451 452 static u32 nft_hash_buckets(u32 size) 453 { 454 u64 val = div_u64((u64)size * 4, 3); 455 456 if (val >= NFT_MAX_BUCKETS) 457 return NFT_MAX_BUCKETS; 458 459 return roundup_pow_of_two(val); 460 } 461 462 static bool nft_rhash_estimate(const struct nft_set_desc *desc, u32 features, 463 struct nft_set_estimate *est) 464 { 465 est->size = ~0; 466 est->lookup = NFT_SET_CLASS_O_1; 467 est->space = NFT_SET_CLASS_O_N; 468 469 return true; 470 } 471 472 struct nft_hash { 473 u32 seed; 474 u32 buckets; 475 struct hlist_head table[]; 476 }; 477 478 struct nft_hash_elem { 479 struct hlist_node node; 480 struct nft_set_ext ext; 481 }; 482 483 INDIRECT_CALLABLE_SCOPE 484 bool nft_hash_lookup(const struct net *net, const struct nft_set *set, 485 const u32 *key, const struct nft_set_ext **ext) 486 { 487 struct nft_hash *priv = nft_set_priv(set); 488 u8 genmask = nft_genmask_cur(net); 489 const struct nft_hash_elem *he; 490 u32 hash; 491 492 hash = jhash(key, set->klen, priv->seed); 493 hash = reciprocal_scale(hash, priv->buckets); 494 hlist_for_each_entry_rcu(he, &priv->table[hash], node) { 495 if (!memcmp(nft_set_ext_key(&he->ext), key, set->klen) && 496 nft_set_elem_active(&he->ext, genmask)) { 497 *ext = &he->ext; 498 return true; 499 } 500 } 501 return false; 502 } 503 504 static void *nft_hash_get(const struct net *net, const struct nft_set *set, 505 const struct nft_set_elem *elem, unsigned int flags) 506 { 507 struct nft_hash *priv = nft_set_priv(set); 508 u8 genmask = nft_genmask_cur(net); 509 struct nft_hash_elem *he; 510 u32 hash; 511 512 hash = jhash(elem->key.val.data, set->klen, priv->seed); 513 hash = reciprocal_scale(hash, priv->buckets); 514 hlist_for_each_entry_rcu(he, &priv->table[hash], node) { 515 if (!memcmp(nft_set_ext_key(&he->ext), elem->key.val.data, set->klen) && 516 nft_set_elem_active(&he->ext, genmask)) 517 return he; 518 } 519 return ERR_PTR(-ENOENT); 520 } 521 522 INDIRECT_CALLABLE_SCOPE 523 bool nft_hash_lookup_fast(const struct net *net, 524 const struct nft_set *set, 525 const u32 *key, const struct nft_set_ext **ext) 526 { 527 struct nft_hash *priv = nft_set_priv(set); 528 u8 genmask = nft_genmask_cur(net); 529 const struct nft_hash_elem *he; 530 u32 hash, k1, k2; 531 532 k1 = *key; 533 hash = jhash_1word(k1, priv->seed); 534 hash = reciprocal_scale(hash, priv->buckets); 535 hlist_for_each_entry_rcu(he, &priv->table[hash], node) { 536 k2 = *(u32 *)nft_set_ext_key(&he->ext)->data; 537 if (k1 == k2 && 538 nft_set_elem_active(&he->ext, genmask)) { 539 *ext = &he->ext; 540 return true; 541 } 542 } 543 return false; 544 } 545 546 static u32 nft_jhash(const struct nft_set *set, const struct nft_hash *priv, 547 const struct nft_set_ext *ext) 548 { 549 const struct nft_data *key = nft_set_ext_key(ext); 550 u32 hash, k1; 551 552 if (set->klen == 4) { 553 k1 = *(u32 *)key; 554 hash = jhash_1word(k1, priv->seed); 555 } else { 556 hash = jhash(key, set->klen, priv->seed); 557 } 558 hash = reciprocal_scale(hash, priv->buckets); 559 560 return hash; 561 } 562 563 static int nft_hash_insert(const struct net *net, const struct nft_set *set, 564 const struct nft_set_elem *elem, 565 struct nft_set_ext **ext) 566 { 567 struct nft_hash_elem *this = elem->priv, *he; 568 struct nft_hash *priv = nft_set_priv(set); 569 u8 genmask = nft_genmask_next(net); 570 u32 hash; 571 572 hash = nft_jhash(set, priv, &this->ext); 573 hlist_for_each_entry(he, &priv->table[hash], node) { 574 if (!memcmp(nft_set_ext_key(&this->ext), 575 nft_set_ext_key(&he->ext), set->klen) && 576 nft_set_elem_active(&he->ext, genmask)) { 577 *ext = &he->ext; 578 return -EEXIST; 579 } 580 } 581 hlist_add_head_rcu(&this->node, &priv->table[hash]); 582 return 0; 583 } 584 585 static void nft_hash_activate(const struct net *net, const struct nft_set *set, 586 const struct nft_set_elem *elem) 587 { 588 struct nft_hash_elem *he = elem->priv; 589 590 nft_set_elem_change_active(net, set, &he->ext); 591 } 592 593 static bool nft_hash_flush(const struct net *net, 594 const struct nft_set *set, void *priv) 595 { 596 struct nft_hash_elem *he = priv; 597 598 nft_set_elem_change_active(net, set, &he->ext); 599 return true; 600 } 601 602 static void *nft_hash_deactivate(const struct net *net, 603 const struct nft_set *set, 604 const struct nft_set_elem *elem) 605 { 606 struct nft_hash *priv = nft_set_priv(set); 607 struct nft_hash_elem *this = elem->priv, *he; 608 u8 genmask = nft_genmask_next(net); 609 u32 hash; 610 611 hash = nft_jhash(set, priv, &this->ext); 612 hlist_for_each_entry(he, &priv->table[hash], node) { 613 if (!memcmp(nft_set_ext_key(&he->ext), &elem->key.val, 614 set->klen) && 615 nft_set_elem_active(&he->ext, genmask)) { 616 nft_set_elem_change_active(net, set, &he->ext); 617 return he; 618 } 619 } 620 return NULL; 621 } 622 623 static void nft_hash_remove(const struct net *net, 624 const struct nft_set *set, 625 const struct nft_set_elem *elem) 626 { 627 struct nft_hash_elem *he = elem->priv; 628 629 hlist_del_rcu(&he->node); 630 } 631 632 static void nft_hash_walk(const struct nft_ctx *ctx, struct nft_set *set, 633 struct nft_set_iter *iter) 634 { 635 struct nft_hash *priv = nft_set_priv(set); 636 struct nft_hash_elem *he; 637 struct nft_set_elem elem; 638 int i; 639 640 for (i = 0; i < priv->buckets; i++) { 641 hlist_for_each_entry_rcu(he, &priv->table[i], node) { 642 if (iter->count < iter->skip) 643 goto cont; 644 if (!nft_set_elem_active(&he->ext, iter->genmask)) 645 goto cont; 646 647 elem.priv = he; 648 649 iter->err = iter->fn(ctx, set, iter, &elem); 650 if (iter->err < 0) 651 return; 652 cont: 653 iter->count++; 654 } 655 } 656 } 657 658 static u64 nft_hash_privsize(const struct nlattr * const nla[], 659 const struct nft_set_desc *desc) 660 { 661 return sizeof(struct nft_hash) + 662 (u64)nft_hash_buckets(desc->size) * sizeof(struct hlist_head); 663 } 664 665 static int nft_hash_init(const struct nft_set *set, 666 const struct nft_set_desc *desc, 667 const struct nlattr * const tb[]) 668 { 669 struct nft_hash *priv = nft_set_priv(set); 670 671 priv->buckets = nft_hash_buckets(desc->size); 672 get_random_bytes(&priv->seed, sizeof(priv->seed)); 673 674 return 0; 675 } 676 677 static void nft_hash_destroy(const struct nft_ctx *ctx, 678 const struct nft_set *set) 679 { 680 struct nft_hash *priv = nft_set_priv(set); 681 struct nft_hash_elem *he; 682 struct hlist_node *next; 683 int i; 684 685 for (i = 0; i < priv->buckets; i++) { 686 hlist_for_each_entry_safe(he, next, &priv->table[i], node) { 687 hlist_del_rcu(&he->node); 688 nf_tables_set_elem_destroy(ctx, set, he); 689 } 690 } 691 } 692 693 static bool nft_hash_estimate(const struct nft_set_desc *desc, u32 features, 694 struct nft_set_estimate *est) 695 { 696 if (!desc->size) 697 return false; 698 699 if (desc->klen == 4) 700 return false; 701 702 est->size = sizeof(struct nft_hash) + 703 (u64)nft_hash_buckets(desc->size) * sizeof(struct hlist_head) + 704 (u64)desc->size * sizeof(struct nft_hash_elem); 705 est->lookup = NFT_SET_CLASS_O_1; 706 est->space = NFT_SET_CLASS_O_N; 707 708 return true; 709 } 710 711 static bool nft_hash_fast_estimate(const struct nft_set_desc *desc, u32 features, 712 struct nft_set_estimate *est) 713 { 714 if (!desc->size) 715 return false; 716 717 if (desc->klen != 4) 718 return false; 719 720 est->size = sizeof(struct nft_hash) + 721 (u64)nft_hash_buckets(desc->size) * sizeof(struct hlist_head) + 722 (u64)desc->size * sizeof(struct nft_hash_elem); 723 est->lookup = NFT_SET_CLASS_O_1; 724 est->space = NFT_SET_CLASS_O_N; 725 726 return true; 727 } 728 729 const struct nft_set_type nft_set_rhash_type = { 730 .features = NFT_SET_MAP | NFT_SET_OBJECT | 731 NFT_SET_TIMEOUT | NFT_SET_EVAL, 732 .ops = { 733 .privsize = nft_rhash_privsize, 734 .elemsize = offsetof(struct nft_rhash_elem, ext), 735 .estimate = nft_rhash_estimate, 736 .init = nft_rhash_init, 737 .gc_init = nft_rhash_gc_init, 738 .destroy = nft_rhash_destroy, 739 .insert = nft_rhash_insert, 740 .activate = nft_rhash_activate, 741 .deactivate = nft_rhash_deactivate, 742 .flush = nft_rhash_flush, 743 .remove = nft_rhash_remove, 744 .lookup = nft_rhash_lookup, 745 .update = nft_rhash_update, 746 .delete = nft_rhash_delete, 747 .walk = nft_rhash_walk, 748 .get = nft_rhash_get, 749 }, 750 }; 751 752 const struct nft_set_type nft_set_hash_type = { 753 .features = NFT_SET_MAP | NFT_SET_OBJECT, 754 .ops = { 755 .privsize = nft_hash_privsize, 756 .elemsize = offsetof(struct nft_hash_elem, ext), 757 .estimate = nft_hash_estimate, 758 .init = nft_hash_init, 759 .destroy = nft_hash_destroy, 760 .insert = nft_hash_insert, 761 .activate = nft_hash_activate, 762 .deactivate = nft_hash_deactivate, 763 .flush = nft_hash_flush, 764 .remove = nft_hash_remove, 765 .lookup = nft_hash_lookup, 766 .walk = nft_hash_walk, 767 .get = nft_hash_get, 768 }, 769 }; 770 771 const struct nft_set_type nft_set_hash_fast_type = { 772 .features = NFT_SET_MAP | NFT_SET_OBJECT, 773 .ops = { 774 .privsize = nft_hash_privsize, 775 .elemsize = offsetof(struct nft_hash_elem, ext), 776 .estimate = nft_hash_fast_estimate, 777 .init = nft_hash_init, 778 .destroy = nft_hash_destroy, 779 .insert = nft_hash_insert, 780 .activate = nft_hash_activate, 781 .deactivate = nft_hash_deactivate, 782 .flush = nft_hash_flush, 783 .remove = nft_hash_remove, 784 .lookup = nft_hash_lookup_fast, 785 .walk = nft_hash_walk, 786 .get = nft_hash_get, 787 }, 788 }; 789