1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2002 Cedric Berger 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * - Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * - Redistributions in binary form must reproduce the above 14 * copyright notice, this list of conditions and the following 15 * disclaimer in the documentation and/or other materials provided 16 * with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 * 31 * $OpenBSD: pf_table.c,v 1.79 2008/10/08 06:24:50 mcbride Exp $ 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include "opt_inet.h" 38 #include "opt_inet6.h" 39 40 #include <sys/param.h> 41 #include <sys/kernel.h> 42 #include <sys/lock.h> 43 #include <sys/malloc.h> 44 #include <sys/mbuf.h> 45 #include <sys/mutex.h> 46 #include <sys/refcount.h> 47 #include <sys/rwlock.h> 48 #include <sys/socket.h> 49 #include <vm/uma.h> 50 51 #include <net/if.h> 52 #include <net/vnet.h> 53 #include <net/pfvar.h> 54 55 #define ACCEPT_FLAGS(flags, oklist) \ 56 do { \ 57 if ((flags & ~(oklist)) & \ 58 PFR_FLAG_ALLMASK) \ 59 return (EINVAL); \ 60 } while (0) 61 62 #define FILLIN_SIN(sin, addr) \ 63 do { \ 64 (sin).sin_len = sizeof(sin); \ 65 (sin).sin_family = AF_INET; \ 66 (sin).sin_addr = (addr); \ 67 } while (0) 68 69 #define FILLIN_SIN6(sin6, addr) \ 70 do { \ 71 (sin6).sin6_len = sizeof(sin6); \ 72 (sin6).sin6_family = AF_INET6; \ 73 (sin6).sin6_addr = (addr); \ 74 } while (0) 75 76 #define SWAP(type, a1, a2) \ 77 do { \ 78 type tmp = a1; \ 79 a1 = a2; \ 80 a2 = tmp; \ 81 } while (0) 82 83 #define SUNION2PF(su, af) (((af)==AF_INET) ? \ 84 (struct pf_addr *)&(su)->sin.sin_addr : \ 85 (struct pf_addr *)&(su)->sin6.sin6_addr) 86 87 #define AF_BITS(af) (((af)==AF_INET)?32:128) 88 #define ADDR_NETWORK(ad) ((ad)->pfra_net < AF_BITS((ad)->pfra_af)) 89 #define KENTRY_NETWORK(ke) ((ke)->pfrke_net < AF_BITS((ke)->pfrke_af)) 90 #define KENTRY_RNF_ROOT(ke) \ 91 ((((struct radix_node *)(ke))->rn_flags & RNF_ROOT) != 0) 92 93 #define NO_ADDRESSES (-1) 94 #define ENQUEUE_UNMARKED_ONLY (1) 95 #define INVERT_NEG_FLAG (1) 96 97 struct pfr_walktree { 98 enum pfrw_op { 99 PFRW_MARK, 100 PFRW_SWEEP, 101 PFRW_ENQUEUE, 102 PFRW_GET_ADDRS, 103 PFRW_GET_ASTATS, 104 PFRW_POOL_GET, 105 PFRW_DYNADDR_UPDATE 106 } pfrw_op; 107 union { 108 struct pfr_addr *pfrw1_addr; 109 struct pfr_astats *pfrw1_astats; 110 struct pfr_kentryworkq *pfrw1_workq; 111 struct pfr_kentry *pfrw1_kentry; 112 struct pfi_dynaddr *pfrw1_dyn; 113 } pfrw_1; 114 int pfrw_free; 115 }; 116 #define pfrw_addr pfrw_1.pfrw1_addr 117 #define pfrw_astats pfrw_1.pfrw1_astats 118 #define pfrw_workq pfrw_1.pfrw1_workq 119 #define pfrw_kentry pfrw_1.pfrw1_kentry 120 #define pfrw_dyn pfrw_1.pfrw1_dyn 121 #define pfrw_cnt pfrw_free 122 123 #define senderr(e) do { rv = (e); goto _bad; } while (0) 124 125 static MALLOC_DEFINE(M_PFTABLE, "pf_table", "pf(4) tables structures"); 126 static VNET_DEFINE(uma_zone_t, pfr_kentry_z); 127 #define V_pfr_kentry_z VNET(pfr_kentry_z) 128 static VNET_DEFINE(uma_zone_t, pfr_kcounters_z); 129 #define V_pfr_kcounters_z VNET(pfr_kcounters_z) 130 131 static struct pf_addr pfr_ffaddr = { 132 .addr32 = { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff } 133 }; 134 135 static void pfr_copyout_addr(struct pfr_addr *, 136 struct pfr_kentry *ke); 137 static int pfr_validate_addr(struct pfr_addr *); 138 static void pfr_enqueue_addrs(struct pfr_ktable *, 139 struct pfr_kentryworkq *, int *, int); 140 static void pfr_mark_addrs(struct pfr_ktable *); 141 static struct pfr_kentry 142 *pfr_lookup_addr(struct pfr_ktable *, 143 struct pfr_addr *, int); 144 static struct pfr_kentry *pfr_create_kentry(struct pfr_addr *); 145 static void pfr_destroy_kentries(struct pfr_kentryworkq *); 146 static void pfr_destroy_kentry(struct pfr_kentry *); 147 static void pfr_insert_kentries(struct pfr_ktable *, 148 struct pfr_kentryworkq *, long); 149 static void pfr_remove_kentries(struct pfr_ktable *, 150 struct pfr_kentryworkq *); 151 static void pfr_clstats_kentries(struct pfr_kentryworkq *, long, 152 int); 153 static void pfr_reset_feedback(struct pfr_addr *, int); 154 static void pfr_prepare_network(union sockaddr_union *, int, int); 155 static int pfr_route_kentry(struct pfr_ktable *, 156 struct pfr_kentry *); 157 static int pfr_unroute_kentry(struct pfr_ktable *, 158 struct pfr_kentry *); 159 static int pfr_walktree(struct radix_node *, void *); 160 static int pfr_validate_table(struct pfr_table *, int, int); 161 static int pfr_fix_anchor(char *); 162 static void pfr_commit_ktable(struct pfr_ktable *, long); 163 static void pfr_insert_ktables(struct pfr_ktableworkq *); 164 static void pfr_insert_ktable(struct pfr_ktable *); 165 static void pfr_setflags_ktables(struct pfr_ktableworkq *); 166 static void pfr_setflags_ktable(struct pfr_ktable *, int); 167 static void pfr_clstats_ktables(struct pfr_ktableworkq *, long, 168 int); 169 static void pfr_clstats_ktable(struct pfr_ktable *, long, int); 170 static struct pfr_ktable 171 *pfr_create_ktable(struct pfr_table *, long, int); 172 static void pfr_destroy_ktables(struct pfr_ktableworkq *, int); 173 static void pfr_destroy_ktable(struct pfr_ktable *, int); 174 static int pfr_ktable_compare(struct pfr_ktable *, 175 struct pfr_ktable *); 176 static struct pfr_ktable 177 *pfr_lookup_table(struct pfr_table *); 178 static void pfr_clean_node_mask(struct pfr_ktable *, 179 struct pfr_kentryworkq *); 180 static int pfr_table_count(struct pfr_table *, int); 181 static int pfr_skip_table(struct pfr_table *, 182 struct pfr_ktable *, int); 183 static struct pfr_kentry 184 *pfr_kentry_byidx(struct pfr_ktable *, int, int); 185 186 static RB_PROTOTYPE(pfr_ktablehead, pfr_ktable, pfrkt_tree, pfr_ktable_compare); 187 static RB_GENERATE(pfr_ktablehead, pfr_ktable, pfrkt_tree, pfr_ktable_compare); 188 189 static VNET_DEFINE(struct pfr_ktablehead, pfr_ktables); 190 #define V_pfr_ktables VNET(pfr_ktables) 191 192 static VNET_DEFINE(struct pfr_table, pfr_nulltable); 193 #define V_pfr_nulltable VNET(pfr_nulltable) 194 195 static VNET_DEFINE(int, pfr_ktable_cnt); 196 #define V_pfr_ktable_cnt VNET(pfr_ktable_cnt) 197 198 void 199 pfr_initialize(void) 200 { 201 202 V_pfr_kentry_z = uma_zcreate("pf table entries", 203 sizeof(struct pfr_kentry), NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 204 0); 205 V_pfr_kcounters_z = uma_zcreate("pf table counters", 206 sizeof(struct pfr_kcounters), NULL, NULL, NULL, NULL, 207 UMA_ALIGN_PTR, 0); 208 V_pf_limits[PF_LIMIT_TABLE_ENTRIES].zone = V_pfr_kentry_z; 209 V_pf_limits[PF_LIMIT_TABLE_ENTRIES].limit = PFR_KENTRY_HIWAT; 210 } 211 212 void 213 pfr_cleanup(void) 214 { 215 216 uma_zdestroy(V_pfr_kentry_z); 217 uma_zdestroy(V_pfr_kcounters_z); 218 } 219 220 int 221 pfr_clr_addrs(struct pfr_table *tbl, int *ndel, int flags) 222 { 223 struct pfr_ktable *kt; 224 struct pfr_kentryworkq workq; 225 226 PF_RULES_WASSERT(); 227 228 ACCEPT_FLAGS(flags, PFR_FLAG_DUMMY); 229 if (pfr_validate_table(tbl, 0, flags & PFR_FLAG_USERIOCTL)) 230 return (EINVAL); 231 kt = pfr_lookup_table(tbl); 232 if (kt == NULL || !(kt->pfrkt_flags & PFR_TFLAG_ACTIVE)) 233 return (ESRCH); 234 if (kt->pfrkt_flags & PFR_TFLAG_CONST) 235 return (EPERM); 236 pfr_enqueue_addrs(kt, &workq, ndel, 0); 237 238 if (!(flags & PFR_FLAG_DUMMY)) { 239 pfr_remove_kentries(kt, &workq); 240 KASSERT(kt->pfrkt_cnt == 0, ("%s: non-null pfrkt_cnt", __func__)); 241 } 242 return (0); 243 } 244 245 int 246 pfr_add_addrs(struct pfr_table *tbl, struct pfr_addr *addr, int size, 247 int *nadd, int flags) 248 { 249 struct pfr_ktable *kt, *tmpkt; 250 struct pfr_kentryworkq workq; 251 struct pfr_kentry *p, *q; 252 struct pfr_addr *ad; 253 int i, rv, xadd = 0; 254 long tzero = time_second; 255 256 PF_RULES_WASSERT(); 257 258 ACCEPT_FLAGS(flags, PFR_FLAG_DUMMY | PFR_FLAG_FEEDBACK); 259 if (pfr_validate_table(tbl, 0, flags & PFR_FLAG_USERIOCTL)) 260 return (EINVAL); 261 kt = pfr_lookup_table(tbl); 262 if (kt == NULL || !(kt->pfrkt_flags & PFR_TFLAG_ACTIVE)) 263 return (ESRCH); 264 if (kt->pfrkt_flags & PFR_TFLAG_CONST) 265 return (EPERM); 266 tmpkt = pfr_create_ktable(&V_pfr_nulltable, 0, 0); 267 if (tmpkt == NULL) 268 return (ENOMEM); 269 SLIST_INIT(&workq); 270 for (i = 0, ad = addr; i < size; i++, ad++) { 271 if (pfr_validate_addr(ad)) 272 senderr(EINVAL); 273 p = pfr_lookup_addr(kt, ad, 1); 274 q = pfr_lookup_addr(tmpkt, ad, 1); 275 if (flags & PFR_FLAG_FEEDBACK) { 276 if (q != NULL) 277 ad->pfra_fback = PFR_FB_DUPLICATE; 278 else if (p == NULL) 279 ad->pfra_fback = PFR_FB_ADDED; 280 else if (p->pfrke_not != ad->pfra_not) 281 ad->pfra_fback = PFR_FB_CONFLICT; 282 else 283 ad->pfra_fback = PFR_FB_NONE; 284 } 285 if (p == NULL && q == NULL) { 286 p = pfr_create_kentry(ad); 287 if (p == NULL) 288 senderr(ENOMEM); 289 if (pfr_route_kentry(tmpkt, p)) { 290 pfr_destroy_kentry(p); 291 ad->pfra_fback = PFR_FB_NONE; 292 } else { 293 SLIST_INSERT_HEAD(&workq, p, pfrke_workq); 294 xadd++; 295 } 296 } 297 } 298 pfr_clean_node_mask(tmpkt, &workq); 299 if (!(flags & PFR_FLAG_DUMMY)) 300 pfr_insert_kentries(kt, &workq, tzero); 301 else 302 pfr_destroy_kentries(&workq); 303 if (nadd != NULL) 304 *nadd = xadd; 305 pfr_destroy_ktable(tmpkt, 0); 306 return (0); 307 _bad: 308 pfr_clean_node_mask(tmpkt, &workq); 309 pfr_destroy_kentries(&workq); 310 if (flags & PFR_FLAG_FEEDBACK) 311 pfr_reset_feedback(addr, size); 312 pfr_destroy_ktable(tmpkt, 0); 313 return (rv); 314 } 315 316 int 317 pfr_del_addrs(struct pfr_table *tbl, struct pfr_addr *addr, int size, 318 int *ndel, int flags) 319 { 320 struct pfr_ktable *kt; 321 struct pfr_kentryworkq workq; 322 struct pfr_kentry *p; 323 struct pfr_addr *ad; 324 int i, rv, xdel = 0, log = 1; 325 326 PF_RULES_WASSERT(); 327 328 ACCEPT_FLAGS(flags, PFR_FLAG_DUMMY | PFR_FLAG_FEEDBACK); 329 if (pfr_validate_table(tbl, 0, flags & PFR_FLAG_USERIOCTL)) 330 return (EINVAL); 331 kt = pfr_lookup_table(tbl); 332 if (kt == NULL || !(kt->pfrkt_flags & PFR_TFLAG_ACTIVE)) 333 return (ESRCH); 334 if (kt->pfrkt_flags & PFR_TFLAG_CONST) 335 return (EPERM); 336 /* 337 * there are two algorithms to choose from here. 338 * with: 339 * n: number of addresses to delete 340 * N: number of addresses in the table 341 * 342 * one is O(N) and is better for large 'n' 343 * one is O(n*LOG(N)) and is better for small 'n' 344 * 345 * following code try to decide which one is best. 346 */ 347 for (i = kt->pfrkt_cnt; i > 0; i >>= 1) 348 log++; 349 if (size > kt->pfrkt_cnt/log) { 350 /* full table scan */ 351 pfr_mark_addrs(kt); 352 } else { 353 /* iterate over addresses to delete */ 354 for (i = 0, ad = addr; i < size; i++, ad++) { 355 if (pfr_validate_addr(ad)) 356 return (EINVAL); 357 p = pfr_lookup_addr(kt, ad, 1); 358 if (p != NULL) 359 p->pfrke_mark = 0; 360 } 361 } 362 SLIST_INIT(&workq); 363 for (i = 0, ad = addr; i < size; i++, ad++) { 364 if (pfr_validate_addr(ad)) 365 senderr(EINVAL); 366 p = pfr_lookup_addr(kt, ad, 1); 367 if (flags & PFR_FLAG_FEEDBACK) { 368 if (p == NULL) 369 ad->pfra_fback = PFR_FB_NONE; 370 else if (p->pfrke_not != ad->pfra_not) 371 ad->pfra_fback = PFR_FB_CONFLICT; 372 else if (p->pfrke_mark) 373 ad->pfra_fback = PFR_FB_DUPLICATE; 374 else 375 ad->pfra_fback = PFR_FB_DELETED; 376 } 377 if (p != NULL && p->pfrke_not == ad->pfra_not && 378 !p->pfrke_mark) { 379 p->pfrke_mark = 1; 380 SLIST_INSERT_HEAD(&workq, p, pfrke_workq); 381 xdel++; 382 } 383 } 384 if (!(flags & PFR_FLAG_DUMMY)) 385 pfr_remove_kentries(kt, &workq); 386 if (ndel != NULL) 387 *ndel = xdel; 388 return (0); 389 _bad: 390 if (flags & PFR_FLAG_FEEDBACK) 391 pfr_reset_feedback(addr, size); 392 return (rv); 393 } 394 395 int 396 pfr_set_addrs(struct pfr_table *tbl, struct pfr_addr *addr, int size, 397 int *size2, int *nadd, int *ndel, int *nchange, int flags, 398 u_int32_t ignore_pfrt_flags) 399 { 400 struct pfr_ktable *kt, *tmpkt; 401 struct pfr_kentryworkq addq, delq, changeq; 402 struct pfr_kentry *p, *q; 403 struct pfr_addr ad; 404 int i, rv, xadd = 0, xdel = 0, xchange = 0; 405 long tzero = time_second; 406 407 PF_RULES_WASSERT(); 408 409 ACCEPT_FLAGS(flags, PFR_FLAG_DUMMY | PFR_FLAG_FEEDBACK); 410 if (pfr_validate_table(tbl, ignore_pfrt_flags, flags & 411 PFR_FLAG_USERIOCTL)) 412 return (EINVAL); 413 kt = pfr_lookup_table(tbl); 414 if (kt == NULL || !(kt->pfrkt_flags & PFR_TFLAG_ACTIVE)) 415 return (ESRCH); 416 if (kt->pfrkt_flags & PFR_TFLAG_CONST) 417 return (EPERM); 418 tmpkt = pfr_create_ktable(&V_pfr_nulltable, 0, 0); 419 if (tmpkt == NULL) 420 return (ENOMEM); 421 pfr_mark_addrs(kt); 422 SLIST_INIT(&addq); 423 SLIST_INIT(&delq); 424 SLIST_INIT(&changeq); 425 for (i = 0; i < size; i++) { 426 /* 427 * XXXGL: undertand pf_if usage of this function 428 * and make ad a moving pointer 429 */ 430 bcopy(addr + i, &ad, sizeof(ad)); 431 if (pfr_validate_addr(&ad)) 432 senderr(EINVAL); 433 ad.pfra_fback = PFR_FB_NONE; 434 p = pfr_lookup_addr(kt, &ad, 1); 435 if (p != NULL) { 436 if (p->pfrke_mark) { 437 ad.pfra_fback = PFR_FB_DUPLICATE; 438 goto _skip; 439 } 440 p->pfrke_mark = 1; 441 if (p->pfrke_not != ad.pfra_not) { 442 SLIST_INSERT_HEAD(&changeq, p, pfrke_workq); 443 ad.pfra_fback = PFR_FB_CHANGED; 444 xchange++; 445 } 446 } else { 447 q = pfr_lookup_addr(tmpkt, &ad, 1); 448 if (q != NULL) { 449 ad.pfra_fback = PFR_FB_DUPLICATE; 450 goto _skip; 451 } 452 p = pfr_create_kentry(&ad); 453 if (p == NULL) 454 senderr(ENOMEM); 455 if (pfr_route_kentry(tmpkt, p)) { 456 pfr_destroy_kentry(p); 457 ad.pfra_fback = PFR_FB_NONE; 458 } else { 459 SLIST_INSERT_HEAD(&addq, p, pfrke_workq); 460 ad.pfra_fback = PFR_FB_ADDED; 461 xadd++; 462 } 463 } 464 _skip: 465 if (flags & PFR_FLAG_FEEDBACK) 466 bcopy(&ad, addr + i, sizeof(ad)); 467 } 468 pfr_enqueue_addrs(kt, &delq, &xdel, ENQUEUE_UNMARKED_ONLY); 469 if ((flags & PFR_FLAG_FEEDBACK) && *size2) { 470 if (*size2 < size+xdel) { 471 *size2 = size+xdel; 472 senderr(0); 473 } 474 i = 0; 475 SLIST_FOREACH(p, &delq, pfrke_workq) { 476 pfr_copyout_addr(&ad, p); 477 ad.pfra_fback = PFR_FB_DELETED; 478 bcopy(&ad, addr + size + i, sizeof(ad)); 479 i++; 480 } 481 } 482 pfr_clean_node_mask(tmpkt, &addq); 483 if (!(flags & PFR_FLAG_DUMMY)) { 484 pfr_insert_kentries(kt, &addq, tzero); 485 pfr_remove_kentries(kt, &delq); 486 pfr_clstats_kentries(&changeq, tzero, INVERT_NEG_FLAG); 487 } else 488 pfr_destroy_kentries(&addq); 489 if (nadd != NULL) 490 *nadd = xadd; 491 if (ndel != NULL) 492 *ndel = xdel; 493 if (nchange != NULL) 494 *nchange = xchange; 495 if ((flags & PFR_FLAG_FEEDBACK) && size2) 496 *size2 = size+xdel; 497 pfr_destroy_ktable(tmpkt, 0); 498 return (0); 499 _bad: 500 pfr_clean_node_mask(tmpkt, &addq); 501 pfr_destroy_kentries(&addq); 502 if (flags & PFR_FLAG_FEEDBACK) 503 pfr_reset_feedback(addr, size); 504 pfr_destroy_ktable(tmpkt, 0); 505 return (rv); 506 } 507 508 int 509 pfr_tst_addrs(struct pfr_table *tbl, struct pfr_addr *addr, int size, 510 int *nmatch, int flags) 511 { 512 struct pfr_ktable *kt; 513 struct pfr_kentry *p; 514 struct pfr_addr *ad; 515 int i, xmatch = 0; 516 517 PF_RULES_RASSERT(); 518 519 ACCEPT_FLAGS(flags, PFR_FLAG_REPLACE); 520 if (pfr_validate_table(tbl, 0, 0)) 521 return (EINVAL); 522 kt = pfr_lookup_table(tbl); 523 if (kt == NULL || !(kt->pfrkt_flags & PFR_TFLAG_ACTIVE)) 524 return (ESRCH); 525 526 for (i = 0, ad = addr; i < size; i++, ad++) { 527 if (pfr_validate_addr(ad)) 528 return (EINVAL); 529 if (ADDR_NETWORK(ad)) 530 return (EINVAL); 531 p = pfr_lookup_addr(kt, ad, 0); 532 if (flags & PFR_FLAG_REPLACE) 533 pfr_copyout_addr(ad, p); 534 ad->pfra_fback = (p == NULL) ? PFR_FB_NONE : 535 (p->pfrke_not ? PFR_FB_NOTMATCH : PFR_FB_MATCH); 536 if (p != NULL && !p->pfrke_not) 537 xmatch++; 538 } 539 if (nmatch != NULL) 540 *nmatch = xmatch; 541 return (0); 542 } 543 544 int 545 pfr_get_addrs(struct pfr_table *tbl, struct pfr_addr *addr, int *size, 546 int flags) 547 { 548 struct pfr_ktable *kt; 549 struct pfr_walktree w; 550 int rv; 551 552 PF_RULES_RASSERT(); 553 554 ACCEPT_FLAGS(flags, 0); 555 if (pfr_validate_table(tbl, 0, 0)) 556 return (EINVAL); 557 kt = pfr_lookup_table(tbl); 558 if (kt == NULL || !(kt->pfrkt_flags & PFR_TFLAG_ACTIVE)) 559 return (ESRCH); 560 if (kt->pfrkt_cnt > *size) { 561 *size = kt->pfrkt_cnt; 562 return (0); 563 } 564 565 bzero(&w, sizeof(w)); 566 w.pfrw_op = PFRW_GET_ADDRS; 567 w.pfrw_addr = addr; 568 w.pfrw_free = kt->pfrkt_cnt; 569 rv = kt->pfrkt_ip4->rnh_walktree(&kt->pfrkt_ip4->rh, pfr_walktree, &w); 570 if (!rv) 571 rv = kt->pfrkt_ip6->rnh_walktree(&kt->pfrkt_ip6->rh, 572 pfr_walktree, &w); 573 if (rv) 574 return (rv); 575 576 KASSERT(w.pfrw_free == 0, ("%s: corruption detected (%d)", __func__, 577 w.pfrw_free)); 578 579 *size = kt->pfrkt_cnt; 580 return (0); 581 } 582 583 int 584 pfr_get_astats(struct pfr_table *tbl, struct pfr_astats *addr, int *size, 585 int flags) 586 { 587 struct pfr_ktable *kt; 588 struct pfr_walktree w; 589 struct pfr_kentryworkq workq; 590 int rv; 591 long tzero = time_second; 592 593 PF_RULES_RASSERT(); 594 595 /* XXX PFR_FLAG_CLSTATS disabled */ 596 ACCEPT_FLAGS(flags, 0); 597 if (pfr_validate_table(tbl, 0, 0)) 598 return (EINVAL); 599 kt = pfr_lookup_table(tbl); 600 if (kt == NULL || !(kt->pfrkt_flags & PFR_TFLAG_ACTIVE)) 601 return (ESRCH); 602 if (kt->pfrkt_cnt > *size) { 603 *size = kt->pfrkt_cnt; 604 return (0); 605 } 606 607 bzero(&w, sizeof(w)); 608 w.pfrw_op = PFRW_GET_ASTATS; 609 w.pfrw_astats = addr; 610 w.pfrw_free = kt->pfrkt_cnt; 611 rv = kt->pfrkt_ip4->rnh_walktree(&kt->pfrkt_ip4->rh, pfr_walktree, &w); 612 if (!rv) 613 rv = kt->pfrkt_ip6->rnh_walktree(&kt->pfrkt_ip6->rh, 614 pfr_walktree, &w); 615 if (!rv && (flags & PFR_FLAG_CLSTATS)) { 616 pfr_enqueue_addrs(kt, &workq, NULL, 0); 617 pfr_clstats_kentries(&workq, tzero, 0); 618 } 619 if (rv) 620 return (rv); 621 622 if (w.pfrw_free) { 623 printf("pfr_get_astats: corruption detected (%d).\n", 624 w.pfrw_free); 625 return (ENOTTY); 626 } 627 *size = kt->pfrkt_cnt; 628 return (0); 629 } 630 631 int 632 pfr_clr_astats(struct pfr_table *tbl, struct pfr_addr *addr, int size, 633 int *nzero, int flags) 634 { 635 struct pfr_ktable *kt; 636 struct pfr_kentryworkq workq; 637 struct pfr_kentry *p; 638 struct pfr_addr *ad; 639 int i, rv, xzero = 0; 640 641 PF_RULES_WASSERT(); 642 643 ACCEPT_FLAGS(flags, PFR_FLAG_DUMMY | PFR_FLAG_FEEDBACK); 644 if (pfr_validate_table(tbl, 0, 0)) 645 return (EINVAL); 646 kt = pfr_lookup_table(tbl); 647 if (kt == NULL || !(kt->pfrkt_flags & PFR_TFLAG_ACTIVE)) 648 return (ESRCH); 649 SLIST_INIT(&workq); 650 for (i = 0, ad = addr; i < size; i++, ad++) { 651 if (pfr_validate_addr(ad)) 652 senderr(EINVAL); 653 p = pfr_lookup_addr(kt, ad, 1); 654 if (flags & PFR_FLAG_FEEDBACK) { 655 ad->pfra_fback = (p != NULL) ? 656 PFR_FB_CLEARED : PFR_FB_NONE; 657 } 658 if (p != NULL) { 659 SLIST_INSERT_HEAD(&workq, p, pfrke_workq); 660 xzero++; 661 } 662 } 663 664 if (!(flags & PFR_FLAG_DUMMY)) 665 pfr_clstats_kentries(&workq, 0, 0); 666 if (nzero != NULL) 667 *nzero = xzero; 668 return (0); 669 _bad: 670 if (flags & PFR_FLAG_FEEDBACK) 671 pfr_reset_feedback(addr, size); 672 return (rv); 673 } 674 675 static int 676 pfr_validate_addr(struct pfr_addr *ad) 677 { 678 int i; 679 680 switch (ad->pfra_af) { 681 #ifdef INET 682 case AF_INET: 683 if (ad->pfra_net > 32) 684 return (-1); 685 break; 686 #endif /* INET */ 687 #ifdef INET6 688 case AF_INET6: 689 if (ad->pfra_net > 128) 690 return (-1); 691 break; 692 #endif /* INET6 */ 693 default: 694 return (-1); 695 } 696 if (ad->pfra_net < 128 && 697 (((caddr_t)ad)[ad->pfra_net/8] & (0xFF >> (ad->pfra_net%8)))) 698 return (-1); 699 for (i = (ad->pfra_net+7)/8; i < sizeof(ad->pfra_u); i++) 700 if (((caddr_t)ad)[i]) 701 return (-1); 702 if (ad->pfra_not && ad->pfra_not != 1) 703 return (-1); 704 if (ad->pfra_fback) 705 return (-1); 706 return (0); 707 } 708 709 static void 710 pfr_enqueue_addrs(struct pfr_ktable *kt, struct pfr_kentryworkq *workq, 711 int *naddr, int sweep) 712 { 713 struct pfr_walktree w; 714 715 SLIST_INIT(workq); 716 bzero(&w, sizeof(w)); 717 w.pfrw_op = sweep ? PFRW_SWEEP : PFRW_ENQUEUE; 718 w.pfrw_workq = workq; 719 if (kt->pfrkt_ip4 != NULL) 720 if (kt->pfrkt_ip4->rnh_walktree(&kt->pfrkt_ip4->rh, 721 pfr_walktree, &w)) 722 printf("pfr_enqueue_addrs: IPv4 walktree failed.\n"); 723 if (kt->pfrkt_ip6 != NULL) 724 if (kt->pfrkt_ip6->rnh_walktree(&kt->pfrkt_ip6->rh, 725 pfr_walktree, &w)) 726 printf("pfr_enqueue_addrs: IPv6 walktree failed.\n"); 727 if (naddr != NULL) 728 *naddr = w.pfrw_cnt; 729 } 730 731 static void 732 pfr_mark_addrs(struct pfr_ktable *kt) 733 { 734 struct pfr_walktree w; 735 736 bzero(&w, sizeof(w)); 737 w.pfrw_op = PFRW_MARK; 738 if (kt->pfrkt_ip4->rnh_walktree(&kt->pfrkt_ip4->rh, pfr_walktree, &w)) 739 printf("pfr_mark_addrs: IPv4 walktree failed.\n"); 740 if (kt->pfrkt_ip6->rnh_walktree(&kt->pfrkt_ip6->rh, pfr_walktree, &w)) 741 printf("pfr_mark_addrs: IPv6 walktree failed.\n"); 742 } 743 744 745 static struct pfr_kentry * 746 pfr_lookup_addr(struct pfr_ktable *kt, struct pfr_addr *ad, int exact) 747 { 748 union sockaddr_union sa, mask; 749 struct radix_head *head = NULL; 750 struct pfr_kentry *ke; 751 752 PF_RULES_ASSERT(); 753 754 bzero(&sa, sizeof(sa)); 755 if (ad->pfra_af == AF_INET) { 756 FILLIN_SIN(sa.sin, ad->pfra_ip4addr); 757 head = &kt->pfrkt_ip4->rh; 758 } else if ( ad->pfra_af == AF_INET6 ) { 759 FILLIN_SIN6(sa.sin6, ad->pfra_ip6addr); 760 head = &kt->pfrkt_ip6->rh; 761 } 762 if (ADDR_NETWORK(ad)) { 763 pfr_prepare_network(&mask, ad->pfra_af, ad->pfra_net); 764 ke = (struct pfr_kentry *)rn_lookup(&sa, &mask, head); 765 if (ke && KENTRY_RNF_ROOT(ke)) 766 ke = NULL; 767 } else { 768 ke = (struct pfr_kentry *)rn_match(&sa, head); 769 if (ke && KENTRY_RNF_ROOT(ke)) 770 ke = NULL; 771 if (exact && ke && KENTRY_NETWORK(ke)) 772 ke = NULL; 773 } 774 return (ke); 775 } 776 777 static struct pfr_kentry * 778 pfr_create_kentry(struct pfr_addr *ad) 779 { 780 struct pfr_kentry *ke; 781 782 ke = uma_zalloc(V_pfr_kentry_z, M_NOWAIT | M_ZERO); 783 if (ke == NULL) 784 return (NULL); 785 786 if (ad->pfra_af == AF_INET) 787 FILLIN_SIN(ke->pfrke_sa.sin, ad->pfra_ip4addr); 788 else if (ad->pfra_af == AF_INET6) 789 FILLIN_SIN6(ke->pfrke_sa.sin6, ad->pfra_ip6addr); 790 ke->pfrke_af = ad->pfra_af; 791 ke->pfrke_net = ad->pfra_net; 792 ke->pfrke_not = ad->pfra_not; 793 return (ke); 794 } 795 796 static void 797 pfr_destroy_kentries(struct pfr_kentryworkq *workq) 798 { 799 struct pfr_kentry *p, *q; 800 801 for (p = SLIST_FIRST(workq); p != NULL; p = q) { 802 q = SLIST_NEXT(p, pfrke_workq); 803 pfr_destroy_kentry(p); 804 } 805 } 806 807 static void 808 pfr_destroy_kentry(struct pfr_kentry *ke) 809 { 810 if (ke->pfrke_counters) 811 uma_zfree(V_pfr_kcounters_z, ke->pfrke_counters); 812 uma_zfree(V_pfr_kentry_z, ke); 813 } 814 815 static void 816 pfr_insert_kentries(struct pfr_ktable *kt, 817 struct pfr_kentryworkq *workq, long tzero) 818 { 819 struct pfr_kentry *p; 820 int rv, n = 0; 821 822 SLIST_FOREACH(p, workq, pfrke_workq) { 823 rv = pfr_route_kentry(kt, p); 824 if (rv) { 825 printf("pfr_insert_kentries: cannot route entry " 826 "(code=%d).\n", rv); 827 break; 828 } 829 p->pfrke_tzero = tzero; 830 n++; 831 } 832 kt->pfrkt_cnt += n; 833 } 834 835 int 836 pfr_insert_kentry(struct pfr_ktable *kt, struct pfr_addr *ad, long tzero) 837 { 838 struct pfr_kentry *p; 839 int rv; 840 841 p = pfr_lookup_addr(kt, ad, 1); 842 if (p != NULL) 843 return (0); 844 p = pfr_create_kentry(ad); 845 if (p == NULL) 846 return (ENOMEM); 847 848 rv = pfr_route_kentry(kt, p); 849 if (rv) 850 return (rv); 851 852 p->pfrke_tzero = tzero; 853 kt->pfrkt_cnt++; 854 855 return (0); 856 } 857 858 static void 859 pfr_remove_kentries(struct pfr_ktable *kt, 860 struct pfr_kentryworkq *workq) 861 { 862 struct pfr_kentry *p; 863 int n = 0; 864 865 SLIST_FOREACH(p, workq, pfrke_workq) { 866 pfr_unroute_kentry(kt, p); 867 n++; 868 } 869 kt->pfrkt_cnt -= n; 870 pfr_destroy_kentries(workq); 871 } 872 873 static void 874 pfr_clean_node_mask(struct pfr_ktable *kt, 875 struct pfr_kentryworkq *workq) 876 { 877 struct pfr_kentry *p; 878 879 SLIST_FOREACH(p, workq, pfrke_workq) 880 pfr_unroute_kentry(kt, p); 881 } 882 883 static void 884 pfr_clstats_kentries(struct pfr_kentryworkq *workq, long tzero, int negchange) 885 { 886 struct pfr_kentry *p; 887 888 SLIST_FOREACH(p, workq, pfrke_workq) { 889 if (negchange) 890 p->pfrke_not = !p->pfrke_not; 891 if (p->pfrke_counters) { 892 uma_zfree(V_pfr_kcounters_z, p->pfrke_counters); 893 p->pfrke_counters = NULL; 894 } 895 p->pfrke_tzero = tzero; 896 } 897 } 898 899 static void 900 pfr_reset_feedback(struct pfr_addr *addr, int size) 901 { 902 struct pfr_addr *ad; 903 int i; 904 905 for (i = 0, ad = addr; i < size; i++, ad++) 906 ad->pfra_fback = PFR_FB_NONE; 907 } 908 909 static void 910 pfr_prepare_network(union sockaddr_union *sa, int af, int net) 911 { 912 int i; 913 914 bzero(sa, sizeof(*sa)); 915 if (af == AF_INET) { 916 sa->sin.sin_len = sizeof(sa->sin); 917 sa->sin.sin_family = AF_INET; 918 sa->sin.sin_addr.s_addr = net ? htonl(-1 << (32-net)) : 0; 919 } else if (af == AF_INET6) { 920 sa->sin6.sin6_len = sizeof(sa->sin6); 921 sa->sin6.sin6_family = AF_INET6; 922 for (i = 0; i < 4; i++) { 923 if (net <= 32) { 924 sa->sin6.sin6_addr.s6_addr32[i] = 925 net ? htonl(-1 << (32-net)) : 0; 926 break; 927 } 928 sa->sin6.sin6_addr.s6_addr32[i] = 0xFFFFFFFF; 929 net -= 32; 930 } 931 } 932 } 933 934 static int 935 pfr_route_kentry(struct pfr_ktable *kt, struct pfr_kentry *ke) 936 { 937 union sockaddr_union mask; 938 struct radix_node *rn; 939 struct radix_head *head = NULL; 940 941 PF_RULES_WASSERT(); 942 943 bzero(ke->pfrke_node, sizeof(ke->pfrke_node)); 944 if (ke->pfrke_af == AF_INET) 945 head = &kt->pfrkt_ip4->rh; 946 else if (ke->pfrke_af == AF_INET6) 947 head = &kt->pfrkt_ip6->rh; 948 949 if (KENTRY_NETWORK(ke)) { 950 pfr_prepare_network(&mask, ke->pfrke_af, ke->pfrke_net); 951 rn = rn_addroute(&ke->pfrke_sa, &mask, head, ke->pfrke_node); 952 } else 953 rn = rn_addroute(&ke->pfrke_sa, NULL, head, ke->pfrke_node); 954 955 return (rn == NULL ? -1 : 0); 956 } 957 958 static int 959 pfr_unroute_kentry(struct pfr_ktable *kt, struct pfr_kentry *ke) 960 { 961 union sockaddr_union mask; 962 struct radix_node *rn; 963 struct radix_head *head = NULL; 964 965 if (ke->pfrke_af == AF_INET) 966 head = &kt->pfrkt_ip4->rh; 967 else if (ke->pfrke_af == AF_INET6) 968 head = &kt->pfrkt_ip6->rh; 969 970 if (KENTRY_NETWORK(ke)) { 971 pfr_prepare_network(&mask, ke->pfrke_af, ke->pfrke_net); 972 rn = rn_delete(&ke->pfrke_sa, &mask, head); 973 } else 974 rn = rn_delete(&ke->pfrke_sa, NULL, head); 975 976 if (rn == NULL) { 977 printf("pfr_unroute_kentry: delete failed.\n"); 978 return (-1); 979 } 980 return (0); 981 } 982 983 static void 984 pfr_copyout_addr(struct pfr_addr *ad, struct pfr_kentry *ke) 985 { 986 bzero(ad, sizeof(*ad)); 987 if (ke == NULL) 988 return; 989 ad->pfra_af = ke->pfrke_af; 990 ad->pfra_net = ke->pfrke_net; 991 ad->pfra_not = ke->pfrke_not; 992 if (ad->pfra_af == AF_INET) 993 ad->pfra_ip4addr = ke->pfrke_sa.sin.sin_addr; 994 else if (ad->pfra_af == AF_INET6) 995 ad->pfra_ip6addr = ke->pfrke_sa.sin6.sin6_addr; 996 } 997 998 static int 999 pfr_walktree(struct radix_node *rn, void *arg) 1000 { 1001 struct pfr_kentry *ke = (struct pfr_kentry *)rn; 1002 struct pfr_walktree *w = arg; 1003 1004 switch (w->pfrw_op) { 1005 case PFRW_MARK: 1006 ke->pfrke_mark = 0; 1007 break; 1008 case PFRW_SWEEP: 1009 if (ke->pfrke_mark) 1010 break; 1011 /* FALLTHROUGH */ 1012 case PFRW_ENQUEUE: 1013 SLIST_INSERT_HEAD(w->pfrw_workq, ke, pfrke_workq); 1014 w->pfrw_cnt++; 1015 break; 1016 case PFRW_GET_ADDRS: 1017 if (w->pfrw_free-- > 0) { 1018 pfr_copyout_addr(w->pfrw_addr, ke); 1019 w->pfrw_addr++; 1020 } 1021 break; 1022 case PFRW_GET_ASTATS: 1023 if (w->pfrw_free-- > 0) { 1024 struct pfr_astats as; 1025 1026 pfr_copyout_addr(&as.pfras_a, ke); 1027 1028 if (ke->pfrke_counters) { 1029 bcopy(ke->pfrke_counters->pfrkc_packets, 1030 as.pfras_packets, sizeof(as.pfras_packets)); 1031 bcopy(ke->pfrke_counters->pfrkc_bytes, 1032 as.pfras_bytes, sizeof(as.pfras_bytes)); 1033 } else { 1034 bzero(as.pfras_packets, sizeof(as.pfras_packets)); 1035 bzero(as.pfras_bytes, sizeof(as.pfras_bytes)); 1036 as.pfras_a.pfra_fback = PFR_FB_NOCOUNT; 1037 } 1038 as.pfras_tzero = ke->pfrke_tzero; 1039 1040 bcopy(&as, w->pfrw_astats, sizeof(as)); 1041 w->pfrw_astats++; 1042 } 1043 break; 1044 case PFRW_POOL_GET: 1045 if (ke->pfrke_not) 1046 break; /* negative entries are ignored */ 1047 if (!w->pfrw_cnt--) { 1048 w->pfrw_kentry = ke; 1049 return (1); /* finish search */ 1050 } 1051 break; 1052 case PFRW_DYNADDR_UPDATE: 1053 { 1054 union sockaddr_union pfr_mask; 1055 1056 if (ke->pfrke_af == AF_INET) { 1057 if (w->pfrw_dyn->pfid_acnt4++ > 0) 1058 break; 1059 pfr_prepare_network(&pfr_mask, AF_INET, ke->pfrke_net); 1060 w->pfrw_dyn->pfid_addr4 = *SUNION2PF(&ke->pfrke_sa, 1061 AF_INET); 1062 w->pfrw_dyn->pfid_mask4 = *SUNION2PF(&pfr_mask, 1063 AF_INET); 1064 } else if (ke->pfrke_af == AF_INET6){ 1065 if (w->pfrw_dyn->pfid_acnt6++ > 0) 1066 break; 1067 pfr_prepare_network(&pfr_mask, AF_INET6, ke->pfrke_net); 1068 w->pfrw_dyn->pfid_addr6 = *SUNION2PF(&ke->pfrke_sa, 1069 AF_INET6); 1070 w->pfrw_dyn->pfid_mask6 = *SUNION2PF(&pfr_mask, 1071 AF_INET6); 1072 } 1073 break; 1074 } 1075 } 1076 return (0); 1077 } 1078 1079 int 1080 pfr_clr_tables(struct pfr_table *filter, int *ndel, int flags) 1081 { 1082 struct pfr_ktableworkq workq; 1083 struct pfr_ktable *p; 1084 int xdel = 0; 1085 1086 ACCEPT_FLAGS(flags, PFR_FLAG_DUMMY | PFR_FLAG_ALLRSETS); 1087 if (pfr_fix_anchor(filter->pfrt_anchor)) 1088 return (EINVAL); 1089 if (pfr_table_count(filter, flags) < 0) 1090 return (ENOENT); 1091 1092 SLIST_INIT(&workq); 1093 RB_FOREACH(p, pfr_ktablehead, &V_pfr_ktables) { 1094 if (pfr_skip_table(filter, p, flags)) 1095 continue; 1096 if (!strcmp(p->pfrkt_anchor, PF_RESERVED_ANCHOR)) 1097 continue; 1098 if (!(p->pfrkt_flags & PFR_TFLAG_ACTIVE)) 1099 continue; 1100 p->pfrkt_nflags = p->pfrkt_flags & ~PFR_TFLAG_ACTIVE; 1101 SLIST_INSERT_HEAD(&workq, p, pfrkt_workq); 1102 xdel++; 1103 } 1104 if (!(flags & PFR_FLAG_DUMMY)) 1105 pfr_setflags_ktables(&workq); 1106 if (ndel != NULL) 1107 *ndel = xdel; 1108 return (0); 1109 } 1110 1111 int 1112 pfr_add_tables(struct pfr_table *tbl, int size, int *nadd, int flags) 1113 { 1114 struct pfr_ktableworkq addq, changeq; 1115 struct pfr_ktable *p, *q, *r, key; 1116 int i, rv, xadd = 0; 1117 long tzero = time_second; 1118 1119 ACCEPT_FLAGS(flags, PFR_FLAG_DUMMY); 1120 SLIST_INIT(&addq); 1121 SLIST_INIT(&changeq); 1122 for (i = 0; i < size; i++) { 1123 bcopy(tbl+i, &key.pfrkt_t, sizeof(key.pfrkt_t)); 1124 if (pfr_validate_table(&key.pfrkt_t, PFR_TFLAG_USRMASK, 1125 flags & PFR_FLAG_USERIOCTL)) 1126 senderr(EINVAL); 1127 key.pfrkt_flags |= PFR_TFLAG_ACTIVE; 1128 p = RB_FIND(pfr_ktablehead, &V_pfr_ktables, &key); 1129 if (p == NULL) { 1130 p = pfr_create_ktable(&key.pfrkt_t, tzero, 1); 1131 if (p == NULL) 1132 senderr(ENOMEM); 1133 SLIST_FOREACH(q, &addq, pfrkt_workq) { 1134 if (!pfr_ktable_compare(p, q)) 1135 goto _skip; 1136 } 1137 SLIST_INSERT_HEAD(&addq, p, pfrkt_workq); 1138 xadd++; 1139 if (!key.pfrkt_anchor[0]) 1140 goto _skip; 1141 1142 /* find or create root table */ 1143 bzero(key.pfrkt_anchor, sizeof(key.pfrkt_anchor)); 1144 r = RB_FIND(pfr_ktablehead, &V_pfr_ktables, &key); 1145 if (r != NULL) { 1146 p->pfrkt_root = r; 1147 goto _skip; 1148 } 1149 SLIST_FOREACH(q, &addq, pfrkt_workq) { 1150 if (!pfr_ktable_compare(&key, q)) { 1151 p->pfrkt_root = q; 1152 goto _skip; 1153 } 1154 } 1155 key.pfrkt_flags = 0; 1156 r = pfr_create_ktable(&key.pfrkt_t, 0, 1); 1157 if (r == NULL) 1158 senderr(ENOMEM); 1159 SLIST_INSERT_HEAD(&addq, r, pfrkt_workq); 1160 p->pfrkt_root = r; 1161 } else if (!(p->pfrkt_flags & PFR_TFLAG_ACTIVE)) { 1162 SLIST_FOREACH(q, &changeq, pfrkt_workq) 1163 if (!pfr_ktable_compare(&key, q)) 1164 goto _skip; 1165 p->pfrkt_nflags = (p->pfrkt_flags & 1166 ~PFR_TFLAG_USRMASK) | key.pfrkt_flags; 1167 SLIST_INSERT_HEAD(&changeq, p, pfrkt_workq); 1168 xadd++; 1169 } 1170 _skip: 1171 ; 1172 } 1173 if (!(flags & PFR_FLAG_DUMMY)) { 1174 pfr_insert_ktables(&addq); 1175 pfr_setflags_ktables(&changeq); 1176 } else 1177 pfr_destroy_ktables(&addq, 0); 1178 if (nadd != NULL) 1179 *nadd = xadd; 1180 return (0); 1181 _bad: 1182 pfr_destroy_ktables(&addq, 0); 1183 return (rv); 1184 } 1185 1186 int 1187 pfr_del_tables(struct pfr_table *tbl, int size, int *ndel, int flags) 1188 { 1189 struct pfr_ktableworkq workq; 1190 struct pfr_ktable *p, *q, key; 1191 int i, xdel = 0; 1192 1193 ACCEPT_FLAGS(flags, PFR_FLAG_DUMMY); 1194 SLIST_INIT(&workq); 1195 for (i = 0; i < size; i++) { 1196 bcopy(tbl+i, &key.pfrkt_t, sizeof(key.pfrkt_t)); 1197 if (pfr_validate_table(&key.pfrkt_t, 0, 1198 flags & PFR_FLAG_USERIOCTL)) 1199 return (EINVAL); 1200 p = RB_FIND(pfr_ktablehead, &V_pfr_ktables, &key); 1201 if (p != NULL && (p->pfrkt_flags & PFR_TFLAG_ACTIVE)) { 1202 SLIST_FOREACH(q, &workq, pfrkt_workq) 1203 if (!pfr_ktable_compare(p, q)) 1204 goto _skip; 1205 p->pfrkt_nflags = p->pfrkt_flags & ~PFR_TFLAG_ACTIVE; 1206 SLIST_INSERT_HEAD(&workq, p, pfrkt_workq); 1207 xdel++; 1208 } 1209 _skip: 1210 ; 1211 } 1212 1213 if (!(flags & PFR_FLAG_DUMMY)) 1214 pfr_setflags_ktables(&workq); 1215 if (ndel != NULL) 1216 *ndel = xdel; 1217 return (0); 1218 } 1219 1220 int 1221 pfr_get_tables(struct pfr_table *filter, struct pfr_table *tbl, int *size, 1222 int flags) 1223 { 1224 struct pfr_ktable *p; 1225 int n, nn; 1226 1227 PF_RULES_RASSERT(); 1228 1229 ACCEPT_FLAGS(flags, PFR_FLAG_ALLRSETS); 1230 if (pfr_fix_anchor(filter->pfrt_anchor)) 1231 return (EINVAL); 1232 n = nn = pfr_table_count(filter, flags); 1233 if (n < 0) 1234 return (ENOENT); 1235 if (n > *size) { 1236 *size = n; 1237 return (0); 1238 } 1239 RB_FOREACH(p, pfr_ktablehead, &V_pfr_ktables) { 1240 if (pfr_skip_table(filter, p, flags)) 1241 continue; 1242 if (n-- <= 0) 1243 continue; 1244 bcopy(&p->pfrkt_t, tbl++, sizeof(*tbl)); 1245 } 1246 1247 KASSERT(n == 0, ("%s: corruption detected (%d)", __func__, n)); 1248 1249 *size = nn; 1250 return (0); 1251 } 1252 1253 int 1254 pfr_get_tstats(struct pfr_table *filter, struct pfr_tstats *tbl, int *size, 1255 int flags) 1256 { 1257 struct pfr_ktable *p; 1258 struct pfr_ktableworkq workq; 1259 int n, nn; 1260 long tzero = time_second; 1261 1262 /* XXX PFR_FLAG_CLSTATS disabled */ 1263 ACCEPT_FLAGS(flags, PFR_FLAG_ALLRSETS); 1264 if (pfr_fix_anchor(filter->pfrt_anchor)) 1265 return (EINVAL); 1266 n = nn = pfr_table_count(filter, flags); 1267 if (n < 0) 1268 return (ENOENT); 1269 if (n > *size) { 1270 *size = n; 1271 return (0); 1272 } 1273 SLIST_INIT(&workq); 1274 RB_FOREACH(p, pfr_ktablehead, &V_pfr_ktables) { 1275 if (pfr_skip_table(filter, p, flags)) 1276 continue; 1277 if (n-- <= 0) 1278 continue; 1279 bcopy(&p->pfrkt_ts, tbl++, sizeof(*tbl)); 1280 SLIST_INSERT_HEAD(&workq, p, pfrkt_workq); 1281 } 1282 if (flags & PFR_FLAG_CLSTATS) 1283 pfr_clstats_ktables(&workq, tzero, 1284 flags & PFR_FLAG_ADDRSTOO); 1285 1286 KASSERT(n == 0, ("%s: corruption detected (%d)", __func__, n)); 1287 1288 *size = nn; 1289 return (0); 1290 } 1291 1292 int 1293 pfr_clr_tstats(struct pfr_table *tbl, int size, int *nzero, int flags) 1294 { 1295 struct pfr_ktableworkq workq; 1296 struct pfr_ktable *p, key; 1297 int i, xzero = 0; 1298 long tzero = time_second; 1299 1300 ACCEPT_FLAGS(flags, PFR_FLAG_DUMMY | PFR_FLAG_ADDRSTOO); 1301 SLIST_INIT(&workq); 1302 for (i = 0; i < size; i++) { 1303 bcopy(tbl + i, &key.pfrkt_t, sizeof(key.pfrkt_t)); 1304 if (pfr_validate_table(&key.pfrkt_t, 0, 0)) 1305 return (EINVAL); 1306 p = RB_FIND(pfr_ktablehead, &V_pfr_ktables, &key); 1307 if (p != NULL) { 1308 SLIST_INSERT_HEAD(&workq, p, pfrkt_workq); 1309 xzero++; 1310 } 1311 } 1312 if (!(flags & PFR_FLAG_DUMMY)) 1313 pfr_clstats_ktables(&workq, tzero, flags & PFR_FLAG_ADDRSTOO); 1314 if (nzero != NULL) 1315 *nzero = xzero; 1316 return (0); 1317 } 1318 1319 int 1320 pfr_set_tflags(struct pfr_table *tbl, int size, int setflag, int clrflag, 1321 int *nchange, int *ndel, int flags) 1322 { 1323 struct pfr_ktableworkq workq; 1324 struct pfr_ktable *p, *q, key; 1325 int i, xchange = 0, xdel = 0; 1326 1327 ACCEPT_FLAGS(flags, PFR_FLAG_DUMMY); 1328 if ((setflag & ~PFR_TFLAG_USRMASK) || 1329 (clrflag & ~PFR_TFLAG_USRMASK) || 1330 (setflag & clrflag)) 1331 return (EINVAL); 1332 SLIST_INIT(&workq); 1333 for (i = 0; i < size; i++) { 1334 bcopy(tbl + i, &key.pfrkt_t, sizeof(key.pfrkt_t)); 1335 if (pfr_validate_table(&key.pfrkt_t, 0, 1336 flags & PFR_FLAG_USERIOCTL)) 1337 return (EINVAL); 1338 p = RB_FIND(pfr_ktablehead, &V_pfr_ktables, &key); 1339 if (p != NULL && (p->pfrkt_flags & PFR_TFLAG_ACTIVE)) { 1340 p->pfrkt_nflags = (p->pfrkt_flags | setflag) & 1341 ~clrflag; 1342 if (p->pfrkt_nflags == p->pfrkt_flags) 1343 goto _skip; 1344 SLIST_FOREACH(q, &workq, pfrkt_workq) 1345 if (!pfr_ktable_compare(p, q)) 1346 goto _skip; 1347 SLIST_INSERT_HEAD(&workq, p, pfrkt_workq); 1348 if ((p->pfrkt_flags & PFR_TFLAG_PERSIST) && 1349 (clrflag & PFR_TFLAG_PERSIST) && 1350 !(p->pfrkt_flags & PFR_TFLAG_REFERENCED)) 1351 xdel++; 1352 else 1353 xchange++; 1354 } 1355 _skip: 1356 ; 1357 } 1358 if (!(flags & PFR_FLAG_DUMMY)) 1359 pfr_setflags_ktables(&workq); 1360 if (nchange != NULL) 1361 *nchange = xchange; 1362 if (ndel != NULL) 1363 *ndel = xdel; 1364 return (0); 1365 } 1366 1367 int 1368 pfr_ina_begin(struct pfr_table *trs, u_int32_t *ticket, int *ndel, int flags) 1369 { 1370 struct pfr_ktableworkq workq; 1371 struct pfr_ktable *p; 1372 struct pf_ruleset *rs; 1373 int xdel = 0; 1374 1375 ACCEPT_FLAGS(flags, PFR_FLAG_DUMMY); 1376 rs = pf_find_or_create_ruleset(trs->pfrt_anchor); 1377 if (rs == NULL) 1378 return (ENOMEM); 1379 SLIST_INIT(&workq); 1380 RB_FOREACH(p, pfr_ktablehead, &V_pfr_ktables) { 1381 if (!(p->pfrkt_flags & PFR_TFLAG_INACTIVE) || 1382 pfr_skip_table(trs, p, 0)) 1383 continue; 1384 p->pfrkt_nflags = p->pfrkt_flags & ~PFR_TFLAG_INACTIVE; 1385 SLIST_INSERT_HEAD(&workq, p, pfrkt_workq); 1386 xdel++; 1387 } 1388 if (!(flags & PFR_FLAG_DUMMY)) { 1389 pfr_setflags_ktables(&workq); 1390 if (ticket != NULL) 1391 *ticket = ++rs->tticket; 1392 rs->topen = 1; 1393 } else 1394 pf_remove_if_empty_ruleset(rs); 1395 if (ndel != NULL) 1396 *ndel = xdel; 1397 return (0); 1398 } 1399 1400 int 1401 pfr_ina_define(struct pfr_table *tbl, struct pfr_addr *addr, int size, 1402 int *nadd, int *naddr, u_int32_t ticket, int flags) 1403 { 1404 struct pfr_ktableworkq tableq; 1405 struct pfr_kentryworkq addrq; 1406 struct pfr_ktable *kt, *rt, *shadow, key; 1407 struct pfr_kentry *p; 1408 struct pfr_addr *ad; 1409 struct pf_ruleset *rs; 1410 int i, rv, xadd = 0, xaddr = 0; 1411 1412 PF_RULES_WASSERT(); 1413 1414 ACCEPT_FLAGS(flags, PFR_FLAG_DUMMY | PFR_FLAG_ADDRSTOO); 1415 if (size && !(flags & PFR_FLAG_ADDRSTOO)) 1416 return (EINVAL); 1417 if (pfr_validate_table(tbl, PFR_TFLAG_USRMASK, 1418 flags & PFR_FLAG_USERIOCTL)) 1419 return (EINVAL); 1420 rs = pf_find_ruleset(tbl->pfrt_anchor); 1421 if (rs == NULL || !rs->topen || ticket != rs->tticket) 1422 return (EBUSY); 1423 tbl->pfrt_flags |= PFR_TFLAG_INACTIVE; 1424 SLIST_INIT(&tableq); 1425 kt = RB_FIND(pfr_ktablehead, &V_pfr_ktables, (struct pfr_ktable *)tbl); 1426 if (kt == NULL) { 1427 kt = pfr_create_ktable(tbl, 0, 1); 1428 if (kt == NULL) 1429 return (ENOMEM); 1430 SLIST_INSERT_HEAD(&tableq, kt, pfrkt_workq); 1431 xadd++; 1432 if (!tbl->pfrt_anchor[0]) 1433 goto _skip; 1434 1435 /* find or create root table */ 1436 bzero(&key, sizeof(key)); 1437 strlcpy(key.pfrkt_name, tbl->pfrt_name, sizeof(key.pfrkt_name)); 1438 rt = RB_FIND(pfr_ktablehead, &V_pfr_ktables, &key); 1439 if (rt != NULL) { 1440 kt->pfrkt_root = rt; 1441 goto _skip; 1442 } 1443 rt = pfr_create_ktable(&key.pfrkt_t, 0, 1); 1444 if (rt == NULL) { 1445 pfr_destroy_ktables(&tableq, 0); 1446 return (ENOMEM); 1447 } 1448 SLIST_INSERT_HEAD(&tableq, rt, pfrkt_workq); 1449 kt->pfrkt_root = rt; 1450 } else if (!(kt->pfrkt_flags & PFR_TFLAG_INACTIVE)) 1451 xadd++; 1452 _skip: 1453 shadow = pfr_create_ktable(tbl, 0, 0); 1454 if (shadow == NULL) { 1455 pfr_destroy_ktables(&tableq, 0); 1456 return (ENOMEM); 1457 } 1458 SLIST_INIT(&addrq); 1459 for (i = 0, ad = addr; i < size; i++, ad++) { 1460 if (pfr_validate_addr(ad)) 1461 senderr(EINVAL); 1462 if (pfr_lookup_addr(shadow, ad, 1) != NULL) 1463 continue; 1464 p = pfr_create_kentry(ad); 1465 if (p == NULL) 1466 senderr(ENOMEM); 1467 if (pfr_route_kentry(shadow, p)) { 1468 pfr_destroy_kentry(p); 1469 continue; 1470 } 1471 SLIST_INSERT_HEAD(&addrq, p, pfrke_workq); 1472 xaddr++; 1473 } 1474 if (!(flags & PFR_FLAG_DUMMY)) { 1475 if (kt->pfrkt_shadow != NULL) 1476 pfr_destroy_ktable(kt->pfrkt_shadow, 1); 1477 kt->pfrkt_flags |= PFR_TFLAG_INACTIVE; 1478 pfr_insert_ktables(&tableq); 1479 shadow->pfrkt_cnt = (flags & PFR_FLAG_ADDRSTOO) ? 1480 xaddr : NO_ADDRESSES; 1481 kt->pfrkt_shadow = shadow; 1482 } else { 1483 pfr_clean_node_mask(shadow, &addrq); 1484 pfr_destroy_ktable(shadow, 0); 1485 pfr_destroy_ktables(&tableq, 0); 1486 pfr_destroy_kentries(&addrq); 1487 } 1488 if (nadd != NULL) 1489 *nadd = xadd; 1490 if (naddr != NULL) 1491 *naddr = xaddr; 1492 return (0); 1493 _bad: 1494 pfr_destroy_ktable(shadow, 0); 1495 pfr_destroy_ktables(&tableq, 0); 1496 pfr_destroy_kentries(&addrq); 1497 return (rv); 1498 } 1499 1500 int 1501 pfr_ina_rollback(struct pfr_table *trs, u_int32_t ticket, int *ndel, int flags) 1502 { 1503 struct pfr_ktableworkq workq; 1504 struct pfr_ktable *p; 1505 struct pf_ruleset *rs; 1506 int xdel = 0; 1507 1508 PF_RULES_WASSERT(); 1509 1510 ACCEPT_FLAGS(flags, PFR_FLAG_DUMMY); 1511 rs = pf_find_ruleset(trs->pfrt_anchor); 1512 if (rs == NULL || !rs->topen || ticket != rs->tticket) 1513 return (0); 1514 SLIST_INIT(&workq); 1515 RB_FOREACH(p, pfr_ktablehead, &V_pfr_ktables) { 1516 if (!(p->pfrkt_flags & PFR_TFLAG_INACTIVE) || 1517 pfr_skip_table(trs, p, 0)) 1518 continue; 1519 p->pfrkt_nflags = p->pfrkt_flags & ~PFR_TFLAG_INACTIVE; 1520 SLIST_INSERT_HEAD(&workq, p, pfrkt_workq); 1521 xdel++; 1522 } 1523 if (!(flags & PFR_FLAG_DUMMY)) { 1524 pfr_setflags_ktables(&workq); 1525 rs->topen = 0; 1526 pf_remove_if_empty_ruleset(rs); 1527 } 1528 if (ndel != NULL) 1529 *ndel = xdel; 1530 return (0); 1531 } 1532 1533 int 1534 pfr_ina_commit(struct pfr_table *trs, u_int32_t ticket, int *nadd, 1535 int *nchange, int flags) 1536 { 1537 struct pfr_ktable *p, *q; 1538 struct pfr_ktableworkq workq; 1539 struct pf_ruleset *rs; 1540 int xadd = 0, xchange = 0; 1541 long tzero = time_second; 1542 1543 PF_RULES_WASSERT(); 1544 1545 ACCEPT_FLAGS(flags, PFR_FLAG_DUMMY); 1546 rs = pf_find_ruleset(trs->pfrt_anchor); 1547 if (rs == NULL || !rs->topen || ticket != rs->tticket) 1548 return (EBUSY); 1549 1550 SLIST_INIT(&workq); 1551 RB_FOREACH(p, pfr_ktablehead, &V_pfr_ktables) { 1552 if (!(p->pfrkt_flags & PFR_TFLAG_INACTIVE) || 1553 pfr_skip_table(trs, p, 0)) 1554 continue; 1555 SLIST_INSERT_HEAD(&workq, p, pfrkt_workq); 1556 if (p->pfrkt_flags & PFR_TFLAG_ACTIVE) 1557 xchange++; 1558 else 1559 xadd++; 1560 } 1561 1562 if (!(flags & PFR_FLAG_DUMMY)) { 1563 for (p = SLIST_FIRST(&workq); p != NULL; p = q) { 1564 q = SLIST_NEXT(p, pfrkt_workq); 1565 pfr_commit_ktable(p, tzero); 1566 } 1567 rs->topen = 0; 1568 pf_remove_if_empty_ruleset(rs); 1569 } 1570 if (nadd != NULL) 1571 *nadd = xadd; 1572 if (nchange != NULL) 1573 *nchange = xchange; 1574 1575 return (0); 1576 } 1577 1578 static void 1579 pfr_commit_ktable(struct pfr_ktable *kt, long tzero) 1580 { 1581 struct pfr_ktable *shadow = kt->pfrkt_shadow; 1582 int nflags; 1583 1584 PF_RULES_WASSERT(); 1585 1586 if (shadow->pfrkt_cnt == NO_ADDRESSES) { 1587 if (!(kt->pfrkt_flags & PFR_TFLAG_ACTIVE)) 1588 pfr_clstats_ktable(kt, tzero, 1); 1589 } else if (kt->pfrkt_flags & PFR_TFLAG_ACTIVE) { 1590 /* kt might contain addresses */ 1591 struct pfr_kentryworkq addrq, addq, changeq, delq, garbageq; 1592 struct pfr_kentry *p, *q, *next; 1593 struct pfr_addr ad; 1594 1595 pfr_enqueue_addrs(shadow, &addrq, NULL, 0); 1596 pfr_mark_addrs(kt); 1597 SLIST_INIT(&addq); 1598 SLIST_INIT(&changeq); 1599 SLIST_INIT(&delq); 1600 SLIST_INIT(&garbageq); 1601 pfr_clean_node_mask(shadow, &addrq); 1602 for (p = SLIST_FIRST(&addrq); p != NULL; p = next) { 1603 next = SLIST_NEXT(p, pfrke_workq); /* XXX */ 1604 pfr_copyout_addr(&ad, p); 1605 q = pfr_lookup_addr(kt, &ad, 1); 1606 if (q != NULL) { 1607 if (q->pfrke_not != p->pfrke_not) 1608 SLIST_INSERT_HEAD(&changeq, q, 1609 pfrke_workq); 1610 q->pfrke_mark = 1; 1611 SLIST_INSERT_HEAD(&garbageq, p, pfrke_workq); 1612 } else { 1613 p->pfrke_tzero = tzero; 1614 SLIST_INSERT_HEAD(&addq, p, pfrke_workq); 1615 } 1616 } 1617 pfr_enqueue_addrs(kt, &delq, NULL, ENQUEUE_UNMARKED_ONLY); 1618 pfr_insert_kentries(kt, &addq, tzero); 1619 pfr_remove_kentries(kt, &delq); 1620 pfr_clstats_kentries(&changeq, tzero, INVERT_NEG_FLAG); 1621 pfr_destroy_kentries(&garbageq); 1622 } else { 1623 /* kt cannot contain addresses */ 1624 SWAP(struct radix_node_head *, kt->pfrkt_ip4, 1625 shadow->pfrkt_ip4); 1626 SWAP(struct radix_node_head *, kt->pfrkt_ip6, 1627 shadow->pfrkt_ip6); 1628 SWAP(int, kt->pfrkt_cnt, shadow->pfrkt_cnt); 1629 pfr_clstats_ktable(kt, tzero, 1); 1630 } 1631 nflags = ((shadow->pfrkt_flags & PFR_TFLAG_USRMASK) | 1632 (kt->pfrkt_flags & PFR_TFLAG_SETMASK) | PFR_TFLAG_ACTIVE) 1633 & ~PFR_TFLAG_INACTIVE; 1634 pfr_destroy_ktable(shadow, 0); 1635 kt->pfrkt_shadow = NULL; 1636 pfr_setflags_ktable(kt, nflags); 1637 } 1638 1639 static int 1640 pfr_validate_table(struct pfr_table *tbl, int allowedflags, int no_reserved) 1641 { 1642 int i; 1643 1644 if (!tbl->pfrt_name[0]) 1645 return (-1); 1646 if (no_reserved && !strcmp(tbl->pfrt_anchor, PF_RESERVED_ANCHOR)) 1647 return (-1); 1648 if (tbl->pfrt_name[PF_TABLE_NAME_SIZE-1]) 1649 return (-1); 1650 for (i = strlen(tbl->pfrt_name); i < PF_TABLE_NAME_SIZE; i++) 1651 if (tbl->pfrt_name[i]) 1652 return (-1); 1653 if (pfr_fix_anchor(tbl->pfrt_anchor)) 1654 return (-1); 1655 if (tbl->pfrt_flags & ~allowedflags) 1656 return (-1); 1657 return (0); 1658 } 1659 1660 /* 1661 * Rewrite anchors referenced by tables to remove slashes 1662 * and check for validity. 1663 */ 1664 static int 1665 pfr_fix_anchor(char *anchor) 1666 { 1667 size_t siz = MAXPATHLEN; 1668 int i; 1669 1670 if (anchor[0] == '/') { 1671 char *path; 1672 int off; 1673 1674 path = anchor; 1675 off = 1; 1676 while (*++path == '/') 1677 off++; 1678 bcopy(path, anchor, siz - off); 1679 memset(anchor + siz - off, 0, off); 1680 } 1681 if (anchor[siz - 1]) 1682 return (-1); 1683 for (i = strlen(anchor); i < siz; i++) 1684 if (anchor[i]) 1685 return (-1); 1686 return (0); 1687 } 1688 1689 static int 1690 pfr_table_count(struct pfr_table *filter, int flags) 1691 { 1692 struct pf_ruleset *rs; 1693 1694 PF_RULES_ASSERT(); 1695 1696 if (flags & PFR_FLAG_ALLRSETS) 1697 return (V_pfr_ktable_cnt); 1698 if (filter->pfrt_anchor[0]) { 1699 rs = pf_find_ruleset(filter->pfrt_anchor); 1700 return ((rs != NULL) ? rs->tables : -1); 1701 } 1702 return (pf_main_ruleset.tables); 1703 } 1704 1705 static int 1706 pfr_skip_table(struct pfr_table *filter, struct pfr_ktable *kt, int flags) 1707 { 1708 if (flags & PFR_FLAG_ALLRSETS) 1709 return (0); 1710 if (strcmp(filter->pfrt_anchor, kt->pfrkt_anchor)) 1711 return (1); 1712 return (0); 1713 } 1714 1715 static void 1716 pfr_insert_ktables(struct pfr_ktableworkq *workq) 1717 { 1718 struct pfr_ktable *p; 1719 1720 SLIST_FOREACH(p, workq, pfrkt_workq) 1721 pfr_insert_ktable(p); 1722 } 1723 1724 static void 1725 pfr_insert_ktable(struct pfr_ktable *kt) 1726 { 1727 1728 PF_RULES_WASSERT(); 1729 1730 RB_INSERT(pfr_ktablehead, &V_pfr_ktables, kt); 1731 V_pfr_ktable_cnt++; 1732 if (kt->pfrkt_root != NULL) 1733 if (!kt->pfrkt_root->pfrkt_refcnt[PFR_REFCNT_ANCHOR]++) 1734 pfr_setflags_ktable(kt->pfrkt_root, 1735 kt->pfrkt_root->pfrkt_flags|PFR_TFLAG_REFDANCHOR); 1736 } 1737 1738 static void 1739 pfr_setflags_ktables(struct pfr_ktableworkq *workq) 1740 { 1741 struct pfr_ktable *p, *q; 1742 1743 for (p = SLIST_FIRST(workq); p; p = q) { 1744 q = SLIST_NEXT(p, pfrkt_workq); 1745 pfr_setflags_ktable(p, p->pfrkt_nflags); 1746 } 1747 } 1748 1749 static void 1750 pfr_setflags_ktable(struct pfr_ktable *kt, int newf) 1751 { 1752 struct pfr_kentryworkq addrq; 1753 1754 PF_RULES_WASSERT(); 1755 1756 if (!(newf & PFR_TFLAG_REFERENCED) && 1757 !(newf & PFR_TFLAG_PERSIST)) 1758 newf &= ~PFR_TFLAG_ACTIVE; 1759 if (!(newf & PFR_TFLAG_ACTIVE)) 1760 newf &= ~PFR_TFLAG_USRMASK; 1761 if (!(newf & PFR_TFLAG_SETMASK)) { 1762 RB_REMOVE(pfr_ktablehead, &V_pfr_ktables, kt); 1763 if (kt->pfrkt_root != NULL) 1764 if (!--kt->pfrkt_root->pfrkt_refcnt[PFR_REFCNT_ANCHOR]) 1765 pfr_setflags_ktable(kt->pfrkt_root, 1766 kt->pfrkt_root->pfrkt_flags & 1767 ~PFR_TFLAG_REFDANCHOR); 1768 pfr_destroy_ktable(kt, 1); 1769 V_pfr_ktable_cnt--; 1770 return; 1771 } 1772 if (!(newf & PFR_TFLAG_ACTIVE) && kt->pfrkt_cnt) { 1773 pfr_enqueue_addrs(kt, &addrq, NULL, 0); 1774 pfr_remove_kentries(kt, &addrq); 1775 } 1776 if (!(newf & PFR_TFLAG_INACTIVE) && kt->pfrkt_shadow != NULL) { 1777 pfr_destroy_ktable(kt->pfrkt_shadow, 1); 1778 kt->pfrkt_shadow = NULL; 1779 } 1780 kt->pfrkt_flags = newf; 1781 } 1782 1783 static void 1784 pfr_clstats_ktables(struct pfr_ktableworkq *workq, long tzero, int recurse) 1785 { 1786 struct pfr_ktable *p; 1787 1788 SLIST_FOREACH(p, workq, pfrkt_workq) 1789 pfr_clstats_ktable(p, tzero, recurse); 1790 } 1791 1792 static void 1793 pfr_clstats_ktable(struct pfr_ktable *kt, long tzero, int recurse) 1794 { 1795 struct pfr_kentryworkq addrq; 1796 1797 if (recurse) { 1798 pfr_enqueue_addrs(kt, &addrq, NULL, 0); 1799 pfr_clstats_kentries(&addrq, tzero, 0); 1800 } 1801 bzero(kt->pfrkt_packets, sizeof(kt->pfrkt_packets)); 1802 bzero(kt->pfrkt_bytes, sizeof(kt->pfrkt_bytes)); 1803 kt->pfrkt_match = kt->pfrkt_nomatch = 0; 1804 kt->pfrkt_tzero = tzero; 1805 } 1806 1807 static struct pfr_ktable * 1808 pfr_create_ktable(struct pfr_table *tbl, long tzero, int attachruleset) 1809 { 1810 struct pfr_ktable *kt; 1811 struct pf_ruleset *rs; 1812 1813 PF_RULES_WASSERT(); 1814 1815 kt = malloc(sizeof(*kt), M_PFTABLE, M_NOWAIT|M_ZERO); 1816 if (kt == NULL) 1817 return (NULL); 1818 kt->pfrkt_t = *tbl; 1819 1820 if (attachruleset) { 1821 rs = pf_find_or_create_ruleset(tbl->pfrt_anchor); 1822 if (!rs) { 1823 pfr_destroy_ktable(kt, 0); 1824 return (NULL); 1825 } 1826 kt->pfrkt_rs = rs; 1827 rs->tables++; 1828 } 1829 1830 if (!rn_inithead((void **)&kt->pfrkt_ip4, 1831 offsetof(struct sockaddr_in, sin_addr) * 8) || 1832 !rn_inithead((void **)&kt->pfrkt_ip6, 1833 offsetof(struct sockaddr_in6, sin6_addr) * 8)) { 1834 pfr_destroy_ktable(kt, 0); 1835 return (NULL); 1836 } 1837 kt->pfrkt_tzero = tzero; 1838 1839 return (kt); 1840 } 1841 1842 static void 1843 pfr_destroy_ktables(struct pfr_ktableworkq *workq, int flushaddr) 1844 { 1845 struct pfr_ktable *p, *q; 1846 1847 for (p = SLIST_FIRST(workq); p; p = q) { 1848 q = SLIST_NEXT(p, pfrkt_workq); 1849 pfr_destroy_ktable(p, flushaddr); 1850 } 1851 } 1852 1853 static void 1854 pfr_destroy_ktable(struct pfr_ktable *kt, int flushaddr) 1855 { 1856 struct pfr_kentryworkq addrq; 1857 1858 if (flushaddr) { 1859 pfr_enqueue_addrs(kt, &addrq, NULL, 0); 1860 pfr_clean_node_mask(kt, &addrq); 1861 pfr_destroy_kentries(&addrq); 1862 } 1863 if (kt->pfrkt_ip4 != NULL) 1864 rn_detachhead((void **)&kt->pfrkt_ip4); 1865 if (kt->pfrkt_ip6 != NULL) 1866 rn_detachhead((void **)&kt->pfrkt_ip6); 1867 if (kt->pfrkt_shadow != NULL) 1868 pfr_destroy_ktable(kt->pfrkt_shadow, flushaddr); 1869 if (kt->pfrkt_rs != NULL) { 1870 kt->pfrkt_rs->tables--; 1871 pf_remove_if_empty_ruleset(kt->pfrkt_rs); 1872 } 1873 free(kt, M_PFTABLE); 1874 } 1875 1876 static int 1877 pfr_ktable_compare(struct pfr_ktable *p, struct pfr_ktable *q) 1878 { 1879 int d; 1880 1881 if ((d = strncmp(p->pfrkt_name, q->pfrkt_name, PF_TABLE_NAME_SIZE))) 1882 return (d); 1883 return (strcmp(p->pfrkt_anchor, q->pfrkt_anchor)); 1884 } 1885 1886 static struct pfr_ktable * 1887 pfr_lookup_table(struct pfr_table *tbl) 1888 { 1889 /* struct pfr_ktable start like a struct pfr_table */ 1890 return (RB_FIND(pfr_ktablehead, &V_pfr_ktables, 1891 (struct pfr_ktable *)tbl)); 1892 } 1893 1894 int 1895 pfr_match_addr(struct pfr_ktable *kt, struct pf_addr *a, sa_family_t af) 1896 { 1897 struct pfr_kentry *ke = NULL; 1898 int match; 1899 1900 PF_RULES_RASSERT(); 1901 1902 if (!(kt->pfrkt_flags & PFR_TFLAG_ACTIVE) && kt->pfrkt_root != NULL) 1903 kt = kt->pfrkt_root; 1904 if (!(kt->pfrkt_flags & PFR_TFLAG_ACTIVE)) 1905 return (0); 1906 1907 switch (af) { 1908 #ifdef INET 1909 case AF_INET: 1910 { 1911 struct sockaddr_in sin; 1912 1913 bzero(&sin, sizeof(sin)); 1914 sin.sin_len = sizeof(sin); 1915 sin.sin_family = AF_INET; 1916 sin.sin_addr.s_addr = a->addr32[0]; 1917 ke = (struct pfr_kentry *)rn_match(&sin, &kt->pfrkt_ip4->rh); 1918 if (ke && KENTRY_RNF_ROOT(ke)) 1919 ke = NULL; 1920 break; 1921 } 1922 #endif /* INET */ 1923 #ifdef INET6 1924 case AF_INET6: 1925 { 1926 struct sockaddr_in6 sin6; 1927 1928 bzero(&sin6, sizeof(sin6)); 1929 sin6.sin6_len = sizeof(sin6); 1930 sin6.sin6_family = AF_INET6; 1931 bcopy(a, &sin6.sin6_addr, sizeof(sin6.sin6_addr)); 1932 ke = (struct pfr_kentry *)rn_match(&sin6, &kt->pfrkt_ip6->rh); 1933 if (ke && KENTRY_RNF_ROOT(ke)) 1934 ke = NULL; 1935 break; 1936 } 1937 #endif /* INET6 */ 1938 } 1939 match = (ke && !ke->pfrke_not); 1940 if (match) 1941 kt->pfrkt_match++; 1942 else 1943 kt->pfrkt_nomatch++; 1944 return (match); 1945 } 1946 1947 void 1948 pfr_update_stats(struct pfr_ktable *kt, struct pf_addr *a, sa_family_t af, 1949 u_int64_t len, int dir_out, int op_pass, int notrule) 1950 { 1951 struct pfr_kentry *ke = NULL; 1952 1953 if (!(kt->pfrkt_flags & PFR_TFLAG_ACTIVE) && kt->pfrkt_root != NULL) 1954 kt = kt->pfrkt_root; 1955 if (!(kt->pfrkt_flags & PFR_TFLAG_ACTIVE)) 1956 return; 1957 1958 switch (af) { 1959 #ifdef INET 1960 case AF_INET: 1961 { 1962 struct sockaddr_in sin; 1963 1964 bzero(&sin, sizeof(sin)); 1965 sin.sin_len = sizeof(sin); 1966 sin.sin_family = AF_INET; 1967 sin.sin_addr.s_addr = a->addr32[0]; 1968 ke = (struct pfr_kentry *)rn_match(&sin, &kt->pfrkt_ip4->rh); 1969 if (ke && KENTRY_RNF_ROOT(ke)) 1970 ke = NULL; 1971 break; 1972 } 1973 #endif /* INET */ 1974 #ifdef INET6 1975 case AF_INET6: 1976 { 1977 struct sockaddr_in6 sin6; 1978 1979 bzero(&sin6, sizeof(sin6)); 1980 sin6.sin6_len = sizeof(sin6); 1981 sin6.sin6_family = AF_INET6; 1982 bcopy(a, &sin6.sin6_addr, sizeof(sin6.sin6_addr)); 1983 ke = (struct pfr_kentry *)rn_match(&sin6, &kt->pfrkt_ip6->rh); 1984 if (ke && KENTRY_RNF_ROOT(ke)) 1985 ke = NULL; 1986 break; 1987 } 1988 #endif /* INET6 */ 1989 default: 1990 panic("%s: unknown address family %u", __func__, af); 1991 } 1992 if ((ke == NULL || ke->pfrke_not) != notrule) { 1993 if (op_pass != PFR_OP_PASS) 1994 printf("pfr_update_stats: assertion failed.\n"); 1995 op_pass = PFR_OP_XPASS; 1996 } 1997 kt->pfrkt_packets[dir_out][op_pass]++; 1998 kt->pfrkt_bytes[dir_out][op_pass] += len; 1999 if (ke != NULL && op_pass != PFR_OP_XPASS && 2000 (kt->pfrkt_flags & PFR_TFLAG_COUNTERS)) { 2001 if (ke->pfrke_counters == NULL) 2002 ke->pfrke_counters = uma_zalloc(V_pfr_kcounters_z, 2003 M_NOWAIT | M_ZERO); 2004 if (ke->pfrke_counters != NULL) { 2005 ke->pfrke_counters->pfrkc_packets[dir_out][op_pass]++; 2006 ke->pfrke_counters->pfrkc_bytes[dir_out][op_pass] += len; 2007 } 2008 } 2009 } 2010 2011 struct pfr_ktable * 2012 pfr_attach_table(struct pf_ruleset *rs, char *name) 2013 { 2014 struct pfr_ktable *kt, *rt; 2015 struct pfr_table tbl; 2016 struct pf_anchor *ac = rs->anchor; 2017 2018 PF_RULES_WASSERT(); 2019 2020 bzero(&tbl, sizeof(tbl)); 2021 strlcpy(tbl.pfrt_name, name, sizeof(tbl.pfrt_name)); 2022 if (ac != NULL) 2023 strlcpy(tbl.pfrt_anchor, ac->path, sizeof(tbl.pfrt_anchor)); 2024 kt = pfr_lookup_table(&tbl); 2025 if (kt == NULL) { 2026 kt = pfr_create_ktable(&tbl, time_second, 1); 2027 if (kt == NULL) 2028 return (NULL); 2029 if (ac != NULL) { 2030 bzero(tbl.pfrt_anchor, sizeof(tbl.pfrt_anchor)); 2031 rt = pfr_lookup_table(&tbl); 2032 if (rt == NULL) { 2033 rt = pfr_create_ktable(&tbl, 0, 1); 2034 if (rt == NULL) { 2035 pfr_destroy_ktable(kt, 0); 2036 return (NULL); 2037 } 2038 pfr_insert_ktable(rt); 2039 } 2040 kt->pfrkt_root = rt; 2041 } 2042 pfr_insert_ktable(kt); 2043 } 2044 if (!kt->pfrkt_refcnt[PFR_REFCNT_RULE]++) 2045 pfr_setflags_ktable(kt, kt->pfrkt_flags|PFR_TFLAG_REFERENCED); 2046 return (kt); 2047 } 2048 2049 void 2050 pfr_detach_table(struct pfr_ktable *kt) 2051 { 2052 2053 PF_RULES_WASSERT(); 2054 KASSERT(kt->pfrkt_refcnt[PFR_REFCNT_RULE] > 0, ("%s: refcount %d\n", 2055 __func__, kt->pfrkt_refcnt[PFR_REFCNT_RULE])); 2056 2057 if (!--kt->pfrkt_refcnt[PFR_REFCNT_RULE]) 2058 pfr_setflags_ktable(kt, kt->pfrkt_flags&~PFR_TFLAG_REFERENCED); 2059 } 2060 2061 int 2062 pfr_pool_get(struct pfr_ktable *kt, int *pidx, struct pf_addr *counter, 2063 sa_family_t af) 2064 { 2065 struct pf_addr *addr, *cur, *mask; 2066 union sockaddr_union uaddr, umask; 2067 struct pfr_kentry *ke, *ke2 = NULL; 2068 int idx = -1, use_counter = 0; 2069 2070 switch (af) { 2071 case AF_INET: 2072 uaddr.sin.sin_len = sizeof(struct sockaddr_in); 2073 uaddr.sin.sin_family = AF_INET; 2074 break; 2075 case AF_INET6: 2076 uaddr.sin6.sin6_len = sizeof(struct sockaddr_in6); 2077 uaddr.sin6.sin6_family = AF_INET6; 2078 break; 2079 } 2080 addr = SUNION2PF(&uaddr, af); 2081 2082 if (!(kt->pfrkt_flags & PFR_TFLAG_ACTIVE) && kt->pfrkt_root != NULL) 2083 kt = kt->pfrkt_root; 2084 if (!(kt->pfrkt_flags & PFR_TFLAG_ACTIVE)) 2085 return (-1); 2086 2087 if (pidx != NULL) 2088 idx = *pidx; 2089 if (counter != NULL && idx >= 0) 2090 use_counter = 1; 2091 if (idx < 0) 2092 idx = 0; 2093 2094 _next_block: 2095 ke = pfr_kentry_byidx(kt, idx, af); 2096 if (ke == NULL) { 2097 kt->pfrkt_nomatch++; 2098 return (1); 2099 } 2100 pfr_prepare_network(&umask, af, ke->pfrke_net); 2101 cur = SUNION2PF(&ke->pfrke_sa, af); 2102 mask = SUNION2PF(&umask, af); 2103 2104 if (use_counter) { 2105 /* is supplied address within block? */ 2106 if (!PF_MATCHA(0, cur, mask, counter, af)) { 2107 /* no, go to next block in table */ 2108 idx++; 2109 use_counter = 0; 2110 goto _next_block; 2111 } 2112 PF_ACPY(addr, counter, af); 2113 } else { 2114 /* use first address of block */ 2115 PF_ACPY(addr, cur, af); 2116 } 2117 2118 if (!KENTRY_NETWORK(ke)) { 2119 /* this is a single IP address - no possible nested block */ 2120 PF_ACPY(counter, addr, af); 2121 *pidx = idx; 2122 kt->pfrkt_match++; 2123 return (0); 2124 } 2125 for (;;) { 2126 /* we don't want to use a nested block */ 2127 switch (af) { 2128 case AF_INET: 2129 ke2 = (struct pfr_kentry *)rn_match(&uaddr, 2130 &kt->pfrkt_ip4->rh); 2131 break; 2132 case AF_INET6: 2133 ke2 = (struct pfr_kentry *)rn_match(&uaddr, 2134 &kt->pfrkt_ip6->rh); 2135 break; 2136 } 2137 /* no need to check KENTRY_RNF_ROOT() here */ 2138 if (ke2 == ke) { 2139 /* lookup return the same block - perfect */ 2140 PF_ACPY(counter, addr, af); 2141 *pidx = idx; 2142 kt->pfrkt_match++; 2143 return (0); 2144 } 2145 2146 /* we need to increase the counter past the nested block */ 2147 pfr_prepare_network(&umask, AF_INET, ke2->pfrke_net); 2148 PF_POOLMASK(addr, addr, SUNION2PF(&umask, af), &pfr_ffaddr, af); 2149 PF_AINC(addr, af); 2150 if (!PF_MATCHA(0, cur, mask, addr, af)) { 2151 /* ok, we reached the end of our main block */ 2152 /* go to next block in table */ 2153 idx++; 2154 use_counter = 0; 2155 goto _next_block; 2156 } 2157 } 2158 } 2159 2160 static struct pfr_kentry * 2161 pfr_kentry_byidx(struct pfr_ktable *kt, int idx, int af) 2162 { 2163 struct pfr_walktree w; 2164 2165 bzero(&w, sizeof(w)); 2166 w.pfrw_op = PFRW_POOL_GET; 2167 w.pfrw_cnt = idx; 2168 2169 switch (af) { 2170 #ifdef INET 2171 case AF_INET: 2172 kt->pfrkt_ip4->rnh_walktree(&kt->pfrkt_ip4->rh, pfr_walktree, &w); 2173 return (w.pfrw_kentry); 2174 #endif /* INET */ 2175 #ifdef INET6 2176 case AF_INET6: 2177 kt->pfrkt_ip6->rnh_walktree(&kt->pfrkt_ip6->rh, pfr_walktree, &w); 2178 return (w.pfrw_kentry); 2179 #endif /* INET6 */ 2180 default: 2181 return (NULL); 2182 } 2183 } 2184 2185 void 2186 pfr_dynaddr_update(struct pfr_ktable *kt, struct pfi_dynaddr *dyn) 2187 { 2188 struct pfr_walktree w; 2189 2190 bzero(&w, sizeof(w)); 2191 w.pfrw_op = PFRW_DYNADDR_UPDATE; 2192 w.pfrw_dyn = dyn; 2193 2194 dyn->pfid_acnt4 = 0; 2195 dyn->pfid_acnt6 = 0; 2196 if (!dyn->pfid_af || dyn->pfid_af == AF_INET) 2197 kt->pfrkt_ip4->rnh_walktree(&kt->pfrkt_ip4->rh, pfr_walktree, &w); 2198 if (!dyn->pfid_af || dyn->pfid_af == AF_INET6) 2199 kt->pfrkt_ip6->rnh_walktree(&kt->pfrkt_ip6->rh, pfr_walktree, &w); 2200 } 2201