1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2001 Daniel Hartmeier 5 * Copyright (c) 2002 - 2008 Henning Brauer 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * - Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * - Redistributions in binary form must reproduce the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer in the documentation and/or other materials provided 17 * with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 23 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 27 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 29 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 * 32 * Effort sponsored in part by the Defense Advanced Research Projects 33 * Agency (DARPA) and Air Force Research Laboratory, Air Force 34 * Materiel Command, USAF, under agreement number F30602-01-2-0537. 35 * 36 * $OpenBSD: pf_lb.c,v 1.2 2009/02/12 02:13:15 sthen Exp $ 37 */ 38 39 #include <sys/cdefs.h> 40 #include "opt_pf.h" 41 #include "opt_inet.h" 42 #include "opt_inet6.h" 43 44 #include <sys/param.h> 45 #include <sys/lock.h> 46 #include <sys/mbuf.h> 47 #include <sys/socket.h> 48 #include <sys/sysctl.h> 49 50 #include <crypto/siphash/siphash.h> 51 52 #include <net/if.h> 53 #include <net/if_var.h> 54 #include <net/vnet.h> 55 #include <net/pfvar.h> 56 #include <net/if_pflog.h> 57 58 #ifdef INET 59 #include <netinet/in_var.h> 60 #endif /* INET */ 61 62 #ifdef INET6 63 #include <netinet6/in6_var.h> 64 #endif /* INET6 */ 65 66 67 /* 68 * Limit the amount of work we do to find a free source port for redirects that 69 * introduce a state conflict. 70 */ 71 #define V_pf_rdr_srcport_rewrite_tries VNET(pf_rdr_srcport_rewrite_tries) 72 VNET_DEFINE_STATIC(int, pf_rdr_srcport_rewrite_tries) = 16; 73 74 static uint64_t pf_hash(struct pf_addr *, struct pf_addr *, 75 struct pf_poolhashkey *, sa_family_t); 76 struct pf_krule *pf_match_translation(int, struct pf_test_ctx *); 77 static enum pf_test_status pf_step_into_translation_anchor(int, struct pf_test_ctx *, 78 struct pf_krule *); 79 static int pf_get_sport(struct pf_pdesc *, struct pf_krule *, 80 struct pf_addr *, uint16_t *, uint16_t, uint16_t, 81 struct pf_kpool *, struct pf_udp_mapping **, 82 pf_sn_types_t); 83 static bool pf_islinklocal(const sa_family_t, const struct pf_addr *); 84 85 static uint64_t 86 pf_hash(struct pf_addr *inaddr, struct pf_addr *hash, 87 struct pf_poolhashkey *key, sa_family_t af) 88 { 89 SIPHASH_CTX ctx; 90 #ifdef INET6 91 union { 92 uint64_t hash64; 93 uint32_t hash32[2]; 94 } h; 95 #endif /* INET6 */ 96 uint64_t res = 0; 97 98 _Static_assert(sizeof(*key) >= SIPHASH_KEY_LENGTH, ""); 99 100 switch (af) { 101 #ifdef INET 102 case AF_INET: 103 res = SipHash24(&ctx, (const uint8_t *)key, 104 &inaddr->addr32[0], sizeof(inaddr->addr32[0])); 105 hash->addr32[0] = res; 106 break; 107 #endif /* INET */ 108 #ifdef INET6 109 case AF_INET6: 110 res = SipHash24(&ctx, (const uint8_t *)key, 111 &inaddr->addr32[0], 4 * sizeof(inaddr->addr32[0])); 112 h.hash64 = res; 113 hash->addr32[0] = h.hash32[0]; 114 hash->addr32[1] = h.hash32[1]; 115 /* 116 * siphash isn't big enough, but flipping it around is 117 * good enough here. 118 */ 119 hash->addr32[2] = ~h.hash32[1]; 120 hash->addr32[3] = ~h.hash32[0]; 121 break; 122 #endif /* INET6 */ 123 default: 124 unhandled_af(af); 125 } 126 return (res); 127 } 128 129 #define PF_TEST_ATTRIB(t, a) \ 130 if (t) { \ 131 r = a; \ 132 continue; \ 133 } else do { \ 134 } while (0) 135 136 static enum pf_test_status 137 pf_match_translation_rule(int rs_num, struct pf_test_ctx *ctx, struct pf_kruleset *ruleset) 138 { 139 struct pf_krule *r; 140 struct pf_pdesc *pd = ctx->pd; 141 int rtableid = -1; 142 143 r = TAILQ_FIRST(ruleset->rules[rs_num].active.ptr); 144 while (r != NULL) { 145 struct pf_rule_addr *src = NULL, *dst = NULL; 146 struct pf_addr_wrap *xdst = NULL; 147 148 if (r->action == PF_BINAT && pd->dir == PF_IN) { 149 src = &r->dst; 150 if (r->rdr.cur != NULL) 151 xdst = &r->rdr.cur->addr; 152 } else { 153 src = &r->src; 154 dst = &r->dst; 155 } 156 157 pf_counter_u64_add(&r->evaluations, 1); 158 PF_TEST_ATTRIB(pfi_kkif_match(r->kif, pd->kif) == r->ifnot, 159 r->skip[PF_SKIP_IFP]); 160 PF_TEST_ATTRIB(r->direction && r->direction != pd->dir, 161 r->skip[PF_SKIP_DIR]); 162 PF_TEST_ATTRIB(r->af && r->af != pd->af, 163 r->skip[PF_SKIP_AF]); 164 PF_TEST_ATTRIB(r->proto && r->proto != pd->proto, 165 r->skip[PF_SKIP_PROTO]); 166 PF_TEST_ATTRIB(PF_MISMATCHAW(&src->addr, &pd->nsaddr, pd->af, 167 src->neg, pd->kif, M_GETFIB(pd->m)), 168 r->skip[src == &r->src ? PF_SKIP_SRC_ADDR : 169 PF_SKIP_DST_ADDR]); 170 PF_TEST_ATTRIB(src->port_op && !pf_match_port(src->port_op, 171 src->port[0], src->port[1], pd->nsport), 172 r->skip[src == &r->src ? PF_SKIP_SRC_PORT : 173 PF_SKIP_DST_PORT]); 174 PF_TEST_ATTRIB(dst != NULL && 175 PF_MISMATCHAW(&dst->addr, &pd->ndaddr, pd->af, dst->neg, NULL, 176 M_GETFIB(pd->m)), 177 r->skip[PF_SKIP_DST_ADDR]); 178 PF_TEST_ATTRIB(xdst != NULL && PF_MISMATCHAW(xdst, &pd->ndaddr, pd->af, 179 0, NULL, M_GETFIB(pd->m)), 180 TAILQ_NEXT(r, entries)); 181 PF_TEST_ATTRIB(dst != NULL && dst->port_op && 182 !pf_match_port(dst->port_op, dst->port[0], 183 dst->port[1], pd->ndport), 184 r->skip[PF_SKIP_DST_PORT]); 185 PF_TEST_ATTRIB(r->match_tag && !pf_match_tag(pd->m, r, &ctx->tag, 186 pd->pf_mtag ? pd->pf_mtag->tag : 0), 187 TAILQ_NEXT(r, entries)); 188 PF_TEST_ATTRIB(r->os_fingerprint != PF_OSFP_ANY && (pd->proto != 189 IPPROTO_TCP || !pf_osfp_match(pf_osfp_fingerprint(pd, 190 &pd->hdr.tcp), r->os_fingerprint)), 191 TAILQ_NEXT(r, entries)); 192 if (r->tag) 193 ctx->tag = r->tag; 194 if (r->rtableid >= 0) 195 rtableid = r->rtableid; 196 if (r->anchor == NULL) { 197 if (r->action == PF_NONAT || 198 r->action == PF_NORDR || 199 r->action == PF_NOBINAT) { 200 *ctx->rm = NULL; 201 } else { 202 /* 203 * found matching r 204 */ 205 ctx->tr = r; 206 /* 207 * anchor, with ruleset, where r belongs to 208 */ 209 *ctx->am = ctx->a; 210 /* 211 * ruleset where r belongs to 212 */ 213 *ctx->rsm = ruleset; 214 /* 215 * ruleset, where anchor belongs to. 216 */ 217 ctx->arsm = ctx->aruleset; 218 } 219 } else { 220 ctx->a = r; /* remember anchor */ 221 ctx->aruleset = ruleset; /* and its ruleset */ 222 if (pf_step_into_translation_anchor(rs_num, ctx, 223 r) != PF_TEST_OK) { 224 break; 225 } 226 } 227 r = TAILQ_NEXT(r, entries); 228 } 229 230 if (ctx->tag > 0 && pf_tag_packet(pd, ctx->tag)) 231 return (PF_TEST_FAIL); 232 if (rtableid >= 0) 233 M_SETFIB(pd->m, rtableid); 234 235 return (PF_TEST_OK); 236 } 237 238 static enum pf_test_status 239 pf_step_into_translation_anchor(int rs_num, struct pf_test_ctx *ctx, struct pf_krule *r) 240 { 241 enum pf_test_status rv; 242 243 PF_RULES_RASSERT(); 244 245 if (ctx->depth >= PF_ANCHOR_STACK_MAX) { 246 printf("%s: anchor stack overflow on %s\n", 247 __func__, r->anchor->name); 248 return (PF_TEST_FAIL); 249 } 250 251 ctx->depth++; 252 253 if (r->anchor_wildcard) { 254 struct pf_kanchor *child; 255 rv = PF_TEST_OK; 256 RB_FOREACH(child, pf_kanchor_node, &r->anchor->children) { 257 rv = pf_match_translation_rule(rs_num, ctx, &child->ruleset); 258 if ((rv == PF_TEST_QUICK) || (rv == PF_TEST_FAIL)) { 259 /* 260 * we either hit a rule qith quick action 261 * (more likely), or hit some runtime 262 * error (e.g. pool_get() faillure). 263 */ 264 break; 265 } 266 } 267 } else { 268 rv = pf_match_translation_rule(rs_num, ctx, &r->anchor->ruleset); 269 } 270 271 ctx->depth--; 272 273 return (rv); 274 } 275 276 struct pf_krule * 277 pf_match_translation(int rs_num, struct pf_test_ctx *ctx) 278 { 279 enum pf_test_status rv; 280 281 MPASS(ctx->depth == 0); 282 rv = pf_match_translation_rule(rs_num, ctx, &pf_main_ruleset); 283 MPASS(ctx->depth == 0); 284 if (rv != PF_TEST_OK) 285 return (NULL); 286 287 return (ctx->tr); 288 } 289 290 static int 291 pf_get_sport(struct pf_pdesc *pd, struct pf_krule *r, struct pf_addr *naddr, 292 uint16_t *nport, uint16_t low, uint16_t high, struct pf_kpool *rpool, 293 struct pf_udp_mapping **udp_mapping, pf_sn_types_t sn_type) 294 { 295 struct pf_state_key_cmp key; 296 struct pf_addr init_addr; 297 int dir = (pd->dir == PF_IN) ? PF_OUT : PF_IN; 298 int sidx = pd->sidx; 299 int didx = pd->didx; 300 301 bzero(&init_addr, sizeof(init_addr)); 302 303 if (udp_mapping) { 304 MPASS(*udp_mapping == NULL); 305 } 306 307 /* 308 * If we are UDP and have an existing mapping we can get source port 309 * from the mapping. In this case we have to look up the src_node as 310 * pf_map_addr would. 311 */ 312 if (pd->proto == IPPROTO_UDP && (rpool->opts & PF_POOL_ENDPI)) { 313 struct pf_udp_endpoint_cmp udp_source; 314 315 bzero(&udp_source, sizeof(udp_source)); 316 udp_source.af = pd->af; 317 pf_addrcpy(&udp_source.addr, &pd->nsaddr, pd->af); 318 udp_source.port = pd->nsport; 319 if (udp_mapping) { 320 struct pf_ksrc_node *sn = NULL; 321 struct pf_srchash *sh = NULL; 322 *udp_mapping = pf_udp_mapping_find(&udp_source); 323 if (*udp_mapping) { 324 pf_addrcpy(naddr, 325 &(*udp_mapping)->endpoints[1].addr, 326 pd->af); 327 *nport = (*udp_mapping)->endpoints[1].port; 328 /* 329 * Try to find a src_node as per pf_map_addr(). 330 * XXX: Why? This code seems to do nothing. 331 */ 332 if (rpool->opts & PF_POOL_STICKYADDR && 333 (rpool->opts & PF_POOL_TYPEMASK) != PF_POOL_NONE) 334 sn = pf_find_src_node(&pd->nsaddr, r, 335 pd->af, &sh, sn_type, false); 336 if (sn != NULL) 337 PF_SRC_NODE_UNLOCK(sn); 338 return (0); 339 } else { 340 *udp_mapping = pf_udp_mapping_create(pd->af, &pd->nsaddr, 341 pd->nsport, &init_addr, 0); 342 if (*udp_mapping == NULL) 343 return (1); 344 } 345 } 346 } 347 348 if (pf_map_addr_sn(pd->naf, r, &pd->nsaddr, naddr, &(pd->naf), NULL, 349 &init_addr, rpool, sn_type)) 350 goto failed; 351 352 if (pd->proto == IPPROTO_ICMP) { 353 if (pd->ndport == htons(ICMP_ECHO)) { 354 low = 1; 355 high = 65535; 356 } else 357 return (0); /* Don't try to modify non-echo ICMP */ 358 } 359 #ifdef INET6 360 if (pd->proto == IPPROTO_ICMPV6) { 361 if (pd->ndport == htons(ICMP6_ECHO_REQUEST)) { 362 low = 1; 363 high = 65535; 364 } else 365 return (0); /* Don't try to modify non-echo ICMP */ 366 } 367 #endif /* INET6 */ 368 369 bzero(&key, sizeof(key)); 370 key.af = pd->naf; 371 key.proto = pd->proto; 372 373 do { 374 pf_addrcpy(&key.addr[didx], &pd->ndaddr, key.af); 375 pf_addrcpy(&key.addr[sidx], naddr, key.af); 376 key.port[didx] = pd->ndport; 377 378 if (udp_mapping && *udp_mapping) 379 pf_addrcpy(&(*udp_mapping)->endpoints[1].addr, naddr, 380 pd->af); 381 382 /* 383 * port search; start random, step; 384 * similar 2 portloop in in_pcbbind 385 */ 386 if (pd->proto == IPPROTO_SCTP) { 387 key.port[sidx] = pd->nsport; 388 if (!pf_find_state_all_exists(&key, dir)) { 389 *nport = pd->nsport; 390 return (0); 391 } else { 392 return (1); /* Fail mapping. */ 393 } 394 } else if (!(pd->proto == IPPROTO_TCP || pd->proto == IPPROTO_UDP || 395 pd->proto == IPPROTO_ICMP) || (low == 0 && high == 0)) { 396 /* 397 * XXX bug: icmp states don't use the id on both sides. 398 * (traceroute -I through nat) 399 */ 400 key.port[sidx] = pd->nsport; 401 if (!pf_find_state_all_exists(&key, dir)) { 402 *nport = pd->nsport; 403 return (0); 404 } 405 } else if (low == high) { 406 key.port[sidx] = htons(low); 407 if (!pf_find_state_all_exists(&key, dir)) { 408 if (udp_mapping && *udp_mapping != NULL) { 409 (*udp_mapping)->endpoints[1].port = htons(low); 410 if (pf_udp_mapping_insert(*udp_mapping) == 0) { 411 *nport = htons(low); 412 return (0); 413 } 414 } else { 415 *nport = htons(low); 416 return (0); 417 } 418 } 419 } else { 420 uint32_t tmp; 421 uint16_t cut; 422 423 if (low > high) { 424 tmp = low; 425 low = high; 426 high = tmp; 427 } 428 /* low < high */ 429 cut = arc4random() % (1 + high - low) + low; 430 /* low <= cut <= high */ 431 for (tmp = cut; tmp <= high && tmp <= 0xffff; ++tmp) { 432 if (udp_mapping && *udp_mapping != NULL) { 433 (*udp_mapping)->endpoints[sidx].port = htons(tmp); 434 if (pf_udp_mapping_insert(*udp_mapping) == 0) { 435 *nport = htons(tmp); 436 return (0); 437 } 438 } else { 439 key.port[sidx] = htons(tmp); 440 if (!pf_find_state_all_exists(&key, dir)) { 441 *nport = htons(tmp); 442 return (0); 443 } 444 } 445 } 446 tmp = cut; 447 for (tmp -= 1; tmp >= low && tmp <= 0xffff; --tmp) { 448 if (pd->proto == IPPROTO_UDP && 449 (rpool->opts & PF_POOL_ENDPI && 450 udp_mapping != NULL)) { 451 (*udp_mapping)->endpoints[1].port = htons(tmp); 452 if (pf_udp_mapping_insert(*udp_mapping) == 0) { 453 *nport = htons(tmp); 454 return (0); 455 } 456 } else { 457 key.port[sidx] = htons(tmp); 458 if (!pf_find_state_all_exists(&key, dir)) { 459 *nport = htons(tmp); 460 return (0); 461 } 462 } 463 } 464 } 465 466 switch (rpool->opts & PF_POOL_TYPEMASK) { 467 case PF_POOL_RANDOM: 468 case PF_POOL_ROUNDROBIN: 469 /* 470 * pick a different source address since we're out 471 * of free port choices for the current one. 472 */ 473 if (pf_map_addr_sn(pd->naf, r, &pd->nsaddr, naddr, 474 &(pd->naf), NULL, &init_addr, rpool, sn_type)) 475 return (1); 476 break; 477 case PF_POOL_NONE: 478 case PF_POOL_SRCHASH: 479 case PF_POOL_BITMASK: 480 default: 481 return (1); 482 } 483 } while (! PF_AEQ(&init_addr, naddr, pd->naf) ); 484 485 failed: 486 if (udp_mapping) { 487 uma_zfree(V_pf_udp_mapping_z, *udp_mapping); 488 *udp_mapping = NULL; 489 } 490 491 return (1); /* none available */ 492 } 493 494 static bool 495 pf_islinklocal(const sa_family_t af, const struct pf_addr *addr) 496 { 497 if (af == AF_INET6 && IN6_IS_ADDR_LINKLOCAL(&addr->v6)) 498 return (true); 499 return (false); 500 } 501 502 static int 503 pf_get_mape_sport(struct pf_pdesc *pd, struct pf_krule *r, 504 struct pf_addr *naddr, uint16_t *nport, struct pf_udp_mapping **udp_mapping, 505 struct pf_kpool *rpool) 506 { 507 uint16_t psmask, low, highmask; 508 uint16_t i, ahigh, cut; 509 int ashift, psidshift; 510 511 ashift = 16 - rpool->mape.offset; 512 psidshift = ashift - rpool->mape.psidlen; 513 psmask = rpool->mape.psid & ((1U << rpool->mape.psidlen) - 1); 514 psmask = psmask << psidshift; 515 highmask = (1U << psidshift) - 1; 516 517 ahigh = (1U << rpool->mape.offset) - 1; 518 cut = arc4random() & ahigh; 519 if (cut == 0) 520 cut = 1; 521 522 for (i = cut; i <= ahigh; i++) { 523 low = (i << ashift) | psmask; 524 if (!pf_get_sport(pd, r, naddr, nport, low, low | highmask, 525 rpool, udp_mapping, PF_SN_NAT)) 526 return (0); 527 } 528 for (i = cut - 1; i > 0; i--) { 529 low = (i << ashift) | psmask; 530 if (!pf_get_sport(pd, r, naddr, nport, low, low | highmask, 531 rpool, udp_mapping, PF_SN_NAT)) 532 return (0); 533 } 534 return (1); 535 } 536 537 u_short 538 pf_map_addr(sa_family_t saf, struct pf_krule *r, struct pf_addr *saddr, 539 struct pf_addr *naddr, struct pfi_kkif **nkif, sa_family_t *naf, 540 struct pf_addr *init_addr, struct pf_kpool *rpool) 541 { 542 u_short reason = PFRES_MATCH; 543 struct pf_addr *raddr = NULL, *rmask = NULL; 544 struct pfr_ktable *kt; 545 uint64_t hashidx; 546 int cnt; 547 sa_family_t wanted_af; 548 549 KASSERT(saf != 0, ("%s: saf == 0", __func__)); 550 KASSERT(naf != NULL, ("%s: naf = NULL", __func__)); 551 KASSERT((*naf) != 0, ("%s: *naf = 0", __func__)); 552 553 wanted_af = (*naf); 554 555 mtx_lock(&rpool->mtx); 556 /* Find the route using chosen algorithm. Store the found route 557 in src_node if it was given or found. */ 558 if (rpool->cur->addr.type == PF_ADDR_NOROUTE) { 559 reason = PFRES_MAPFAILED; 560 goto done_pool_mtx; 561 } 562 if (rpool->cur->addr.type == PF_ADDR_DYNIFTL) { 563 switch (wanted_af) { 564 #ifdef INET 565 case AF_INET: 566 if (rpool->cur->addr.p.dyn->pfid_acnt4 < 1 && 567 !PF_POOL_DYNTYPE(rpool->opts)) { 568 reason = PFRES_MAPFAILED; 569 goto done_pool_mtx; 570 } 571 raddr = &rpool->cur->addr.p.dyn->pfid_addr4; 572 rmask = &rpool->cur->addr.p.dyn->pfid_mask4; 573 break; 574 #endif /* INET */ 575 #ifdef INET6 576 case AF_INET6: 577 if (rpool->cur->addr.p.dyn->pfid_acnt6 < 1 && 578 !PF_POOL_DYNTYPE(rpool->opts)) { 579 reason = PFRES_MAPFAILED; 580 goto done_pool_mtx; 581 } 582 raddr = &rpool->cur->addr.p.dyn->pfid_addr6; 583 rmask = &rpool->cur->addr.p.dyn->pfid_mask6; 584 break; 585 #endif /* INET6 */ 586 default: 587 unhandled_af(wanted_af); 588 } 589 } else if (rpool->cur->addr.type == PF_ADDR_TABLE) { 590 if (!PF_POOL_DYNTYPE(rpool->opts)) { 591 reason = PFRES_MAPFAILED; 592 goto done_pool_mtx; /* unsupported */ 593 } 594 } else { 595 raddr = &rpool->cur->addr.v.a.addr; 596 rmask = &rpool->cur->addr.v.a.mask; 597 /* 598 * For single addresses check their address family. Unless they 599 * have none, which happens when addresses are added with 600 * the old ioctl mechanism. In such case trust that the address 601 * has the proper AF. 602 */ 603 if (rpool->cur->af && rpool->cur->af != wanted_af) { 604 reason = PFRES_MAPFAILED; 605 goto done_pool_mtx; 606 } 607 } 608 609 switch (rpool->opts & PF_POOL_TYPEMASK) { 610 case PF_POOL_NONE: 611 pf_addrcpy(naddr, raddr, wanted_af); 612 break; 613 case PF_POOL_BITMASK: 614 pf_poolmask(naddr, raddr, rmask, saddr, wanted_af); 615 break; 616 case PF_POOL_RANDOM: 617 if (rpool->cur->addr.type == PF_ADDR_TABLE || 618 rpool->cur->addr.type == PF_ADDR_DYNIFTL) { 619 if (rpool->cur->addr.type == PF_ADDR_TABLE) 620 kt = rpool->cur->addr.p.tbl; 621 else 622 kt = rpool->cur->addr.p.dyn->pfid_kt; 623 kt = pfr_ktable_select_active(kt); 624 if (kt == NULL) { 625 reason = PFRES_MAPFAILED; 626 goto done_pool_mtx; /* unsupported */ 627 } 628 cnt = kt->pfrkt_cnt; 629 if (cnt == 0) 630 rpool->tblidx = 0; 631 else 632 rpool->tblidx = (int)arc4random_uniform(cnt); 633 memset(&rpool->counter, 0, sizeof(rpool->counter)); 634 if (pfr_pool_get(kt, &rpool->tblidx, &rpool->counter, 635 wanted_af, pf_islinklocal, false)) { 636 reason = PFRES_MAPFAILED; 637 goto done_pool_mtx; /* unsupported */ 638 } 639 pf_addrcpy(naddr, &rpool->counter, wanted_af); 640 } else if (init_addr != NULL && PF_AZERO(init_addr, 641 wanted_af)) { 642 switch (wanted_af) { 643 #ifdef INET 644 case AF_INET: 645 rpool->counter.addr32[0] = arc4random(); 646 break; 647 #endif /* INET */ 648 #ifdef INET6 649 case AF_INET6: 650 if (rmask->addr32[3] != 0xffffffff) 651 rpool->counter.addr32[3] = 652 arc4random(); 653 else 654 break; 655 if (rmask->addr32[2] != 0xffffffff) 656 rpool->counter.addr32[2] = 657 arc4random(); 658 else 659 break; 660 if (rmask->addr32[1] != 0xffffffff) 661 rpool->counter.addr32[1] = 662 arc4random(); 663 else 664 break; 665 if (rmask->addr32[0] != 0xffffffff) 666 rpool->counter.addr32[0] = 667 arc4random(); 668 break; 669 #endif /* INET6 */ 670 } 671 pf_poolmask(naddr, raddr, rmask, &rpool->counter, 672 wanted_af); 673 pf_addrcpy(init_addr, naddr, wanted_af); 674 675 } else { 676 pf_addr_inc(&rpool->counter, wanted_af); 677 pf_poolmask(naddr, raddr, rmask, &rpool->counter, 678 wanted_af); 679 } 680 break; 681 case PF_POOL_SRCHASH: 682 { 683 unsigned char hash[16]; 684 685 hashidx = 686 pf_hash(saddr, (struct pf_addr *)&hash, &rpool->key, 687 wanted_af); 688 if (rpool->cur->addr.type == PF_ADDR_TABLE || 689 rpool->cur->addr.type == PF_ADDR_DYNIFTL) { 690 if (rpool->cur->addr.type == PF_ADDR_TABLE) 691 kt = rpool->cur->addr.p.tbl; 692 else 693 kt = rpool->cur->addr.p.dyn->pfid_kt; 694 kt = pfr_ktable_select_active(kt); 695 if (kt == NULL) { 696 reason = PFRES_MAPFAILED; 697 goto done_pool_mtx; /* unsupported */ 698 } 699 cnt = kt->pfrkt_cnt; 700 if (cnt == 0) 701 rpool->tblidx = 0; 702 else 703 rpool->tblidx = (int)(hashidx % cnt); 704 memset(&rpool->counter, 0, sizeof(rpool->counter)); 705 if (pfr_pool_get(kt, &rpool->tblidx, &rpool->counter, 706 wanted_af, pf_islinklocal, false)) { 707 reason = PFRES_MAPFAILED; 708 goto done_pool_mtx; /* unsupported */ 709 } 710 pf_addrcpy(naddr, &rpool->counter, wanted_af); 711 } else { 712 pf_poolmask(naddr, raddr, rmask, 713 (struct pf_addr *)&hash, wanted_af); 714 } 715 break; 716 } 717 case PF_POOL_ROUNDROBIN: 718 { 719 struct pf_kpooladdr *acur = rpool->cur; 720 721 if (rpool->cur->addr.type == PF_ADDR_TABLE) { 722 if (!pfr_pool_get(rpool->cur->addr.p.tbl, 723 &rpool->tblidx, &rpool->counter, wanted_af, 724 NULL, true)) 725 goto get_addr; 726 } else if (rpool->cur->addr.type == PF_ADDR_DYNIFTL) { 727 if (!pfr_pool_get(rpool->cur->addr.p.dyn->pfid_kt, 728 &rpool->tblidx, &rpool->counter, wanted_af, 729 pf_islinklocal, true)) 730 goto get_addr; 731 } else if (pf_match_addr(0, raddr, rmask, &rpool->counter, 732 wanted_af)) 733 goto get_addr; 734 735 try_next: 736 if (TAILQ_NEXT(rpool->cur, entries) == NULL) 737 rpool->cur = TAILQ_FIRST(&rpool->list); 738 else 739 rpool->cur = TAILQ_NEXT(rpool->cur, entries); 740 rpool->tblidx = -1; 741 if (rpool->cur->addr.type == PF_ADDR_TABLE) { 742 if (pfr_pool_get(rpool->cur->addr.p.tbl, 743 &rpool->tblidx, &rpool->counter, wanted_af, NULL, 744 true)) { 745 /* table contains no address of type 'wanted_af' */ 746 if (rpool->cur != acur) 747 goto try_next; 748 reason = PFRES_MAPFAILED; 749 goto done_pool_mtx; 750 } 751 } else if (rpool->cur->addr.type == PF_ADDR_DYNIFTL) { 752 if (pfr_pool_get(rpool->cur->addr.p.dyn->pfid_kt, 753 &rpool->tblidx, &rpool->counter, wanted_af, 754 pf_islinklocal, true)) { 755 /* interface has no address of type 'wanted_af' */ 756 if (rpool->cur != acur) 757 goto try_next; 758 reason = PFRES_MAPFAILED; 759 goto done_pool_mtx; 760 } 761 } else { 762 raddr = &rpool->cur->addr.v.a.addr; 763 rmask = &rpool->cur->addr.v.a.mask; 764 if (rpool->cur->af && rpool->cur->af != wanted_af) { 765 reason = PFRES_MAPFAILED; 766 goto done_pool_mtx; 767 } 768 pf_addrcpy(&rpool->counter, raddr, wanted_af); 769 } 770 771 get_addr: 772 pf_addrcpy(naddr, &rpool->counter, wanted_af); 773 if (init_addr != NULL && PF_AZERO(init_addr, wanted_af)) 774 pf_addrcpy(init_addr, naddr, wanted_af); 775 pf_addr_inc(&rpool->counter, wanted_af); 776 break; 777 } 778 } 779 780 if (nkif) 781 *nkif = rpool->cur->kif; 782 783 done_pool_mtx: 784 mtx_unlock(&rpool->mtx); 785 786 return (reason); 787 } 788 789 u_short 790 pf_map_addr_sn(sa_family_t saf, struct pf_krule *r, struct pf_addr *saddr, 791 struct pf_addr *naddr, sa_family_t *naf, struct pfi_kkif **nkif, 792 struct pf_addr *init_addr, struct pf_kpool *rpool, pf_sn_types_t sn_type) 793 { 794 struct pf_ksrc_node *sn = NULL; 795 struct pf_srchash *sh = NULL; 796 u_short reason = 0; 797 798 /* 799 * If this is a sticky-address rule, try to find an existing src_node. 800 */ 801 if (rpool->opts & PF_POOL_STICKYADDR && 802 (rpool->opts & PF_POOL_TYPEMASK) != PF_POOL_NONE) 803 sn = pf_find_src_node(saddr, r, saf, &sh, sn_type, false); 804 805 if (sn != NULL) { 806 PF_SRC_NODE_LOCK_ASSERT(sn); 807 (*naf) = sn->raf; 808 809 /* If the supplied address is the same as the current one we've 810 * been asked before, so tell the caller that there's no other 811 * address to be had. */ 812 813 if (PF_AEQ(naddr, &(sn->raddr), *naf)) { 814 printf("%s: no more addresses\n", __func__); 815 reason = PFRES_MAPFAILED; 816 goto done; 817 } 818 819 pf_addrcpy(naddr, &(sn->raddr), *naf); 820 821 if (nkif) 822 *nkif = sn->rkif; 823 if (V_pf_status.debug >= PF_DEBUG_NOISY) { 824 printf("%s: src tracking maps ", __func__); 825 pf_print_host(saddr, 0, saf); 826 printf(" to "); 827 pf_print_host(naddr, 0, *naf); 828 if (nkif) 829 printf("@%s", (*nkif)->pfik_name); 830 printf("\n"); 831 } 832 goto done; 833 } 834 835 /* 836 * Source node has not been found. Find a new address and store it 837 * in variables given by the caller. 838 */ 839 if ((reason = pf_map_addr(saf, r, saddr, naddr, nkif, naf, init_addr, 840 rpool)) != 0) { 841 if (V_pf_status.debug >= PF_DEBUG_MISC) 842 printf("%s: pf_map_addr has failed\n", __func__); 843 goto done; 844 } 845 846 if (V_pf_status.debug >= PF_DEBUG_NOISY && 847 (rpool->opts & PF_POOL_TYPEMASK) != PF_POOL_NONE) { 848 printf("%s: selected address ", __func__); 849 pf_print_host(naddr, 0, *naf); 850 if (nkif) 851 printf("@%s", (*nkif)->pfik_name); 852 printf("\n"); 853 } 854 855 done: 856 if (sn != NULL) 857 PF_SRC_NODE_UNLOCK(sn); 858 859 return (reason); 860 } 861 862 u_short 863 pf_get_translation(struct pf_test_ctx *ctx) 864 { 865 struct pf_krule *r = NULL; 866 u_short transerror; 867 868 PF_RULES_RASSERT(); 869 KASSERT(ctx->sk == NULL, ("*skp not NULL")); 870 KASSERT(ctx->nk == NULL, ("*nkp not NULL")); 871 872 ctx->nr = NULL; 873 874 if (ctx->pd->dir == PF_OUT) { 875 r = pf_match_translation(PF_RULESET_BINAT, ctx); 876 if (r == NULL) 877 r = pf_match_translation(PF_RULESET_NAT, ctx); 878 } else { 879 r = pf_match_translation(PF_RULESET_RDR, ctx); 880 if (r == NULL) 881 r = pf_match_translation(PF_RULESET_BINAT, ctx); 882 } 883 884 if (r == NULL) 885 return (PFRES_MAX); 886 887 switch (r->action) { 888 case PF_NONAT: 889 case PF_NOBINAT: 890 case PF_NORDR: 891 return (PFRES_MAX); 892 } 893 894 transerror = pf_get_transaddr(ctx, r, r->action, &(r->rdr)); 895 if (transerror == PFRES_MATCH) 896 ctx->nr = r; 897 898 return (transerror); 899 } 900 901 u_short 902 pf_get_transaddr(struct pf_test_ctx *ctx, struct pf_krule *r, 903 uint8_t nat_action, struct pf_kpool *rpool) 904 { 905 struct pf_pdesc *pd = ctx->pd; 906 struct pf_addr *naddr; 907 uint16_t *nportp; 908 uint16_t low, high; 909 u_short reason; 910 911 PF_RULES_RASSERT(); 912 KASSERT(r != NULL, ("r is NULL")); 913 KASSERT(!(r->rule_flag & PFRULE_AFTO), ("AFTO rule")); 914 915 if (ctx->sk == NULL && ctx->nk == NULL) { 916 if (pf_state_key_setup(pd, pd->nsport, pd->ndport, &ctx->sk, 917 &ctx->nk)) 918 return (PFRES_MEMORY); 919 } 920 921 naddr = &ctx->nk->addr[1]; 922 nportp = &ctx->nk->port[1]; 923 924 switch (nat_action) { 925 case PF_NAT: 926 if (pd->proto == IPPROTO_ICMP) { 927 low = 1; 928 high = 65535; 929 } else { 930 low = rpool->proxy_port[0]; 931 high = rpool->proxy_port[1]; 932 } 933 if (rpool->mape.offset > 0) { 934 if (pf_get_mape_sport(pd, r, naddr, nportp, 935 &ctx->udp_mapping, rpool)) { 936 DPFPRINTF(PF_DEBUG_MISC, 937 "pf: MAP-E port allocation (%u/%u/%u)" 938 " failed", 939 rpool->mape.offset, 940 rpool->mape.psidlen, 941 rpool->mape.psid); 942 reason = PFRES_MAPFAILED; 943 goto notrans; 944 } 945 } else if (pf_get_sport(pd, r, naddr, nportp, low, high, 946 rpool, &ctx->udp_mapping, PF_SN_NAT)) { 947 DPFPRINTF(PF_DEBUG_MISC, 948 "pf: NAT proxy port allocation (%u-%u) failed", 949 rpool->proxy_port[0], rpool->proxy_port[1]); 950 reason = PFRES_MAPFAILED; 951 goto notrans; 952 } 953 break; 954 case PF_BINAT: 955 switch (pd->dir) { 956 case PF_OUT: 957 if (rpool->cur->addr.type == PF_ADDR_DYNIFTL){ 958 switch (pd->af) { 959 #ifdef INET 960 case AF_INET: 961 if (rpool->cur->addr.p.dyn-> 962 pfid_acnt4 < 1) { 963 reason = PFRES_MAPFAILED; 964 goto notrans; 965 } 966 pf_poolmask(naddr, 967 &rpool->cur->addr.p.dyn->pfid_addr4, 968 &rpool->cur->addr.p.dyn->pfid_mask4, 969 &pd->nsaddr, AF_INET); 970 break; 971 #endif /* INET */ 972 #ifdef INET6 973 case AF_INET6: 974 if (rpool->cur->addr.p.dyn-> 975 pfid_acnt6 < 1) { 976 reason = PFRES_MAPFAILED; 977 goto notrans; 978 } 979 pf_poolmask(naddr, 980 &rpool->cur->addr.p.dyn->pfid_addr6, 981 &rpool->cur->addr.p.dyn->pfid_mask6, 982 &pd->nsaddr, AF_INET6); 983 break; 984 #endif /* INET6 */ 985 } 986 } else 987 pf_poolmask(naddr, 988 &rpool->cur->addr.v.a.addr, 989 &rpool->cur->addr.v.a.mask, &pd->nsaddr, 990 pd->af); 991 break; 992 case PF_IN: 993 if (r->src.addr.type == PF_ADDR_DYNIFTL) { 994 switch (pd->af) { 995 #ifdef INET 996 case AF_INET: 997 if (r->src.addr.p.dyn->pfid_acnt4 < 1) { 998 reason = PFRES_MAPFAILED; 999 goto notrans; 1000 } 1001 pf_poolmask(naddr, 1002 &r->src.addr.p.dyn->pfid_addr4, 1003 &r->src.addr.p.dyn->pfid_mask4, 1004 &pd->ndaddr, AF_INET); 1005 break; 1006 #endif /* INET */ 1007 #ifdef INET6 1008 case AF_INET6: 1009 if (r->src.addr.p.dyn->pfid_acnt6 < 1) { 1010 reason = PFRES_MAPFAILED; 1011 goto notrans; 1012 } 1013 pf_poolmask(naddr, 1014 &r->src.addr.p.dyn->pfid_addr6, 1015 &r->src.addr.p.dyn->pfid_mask6, 1016 &pd->ndaddr, AF_INET6); 1017 break; 1018 #endif /* INET6 */ 1019 } 1020 } else 1021 pf_poolmask(naddr, &r->src.addr.v.a.addr, 1022 &r->src.addr.v.a.mask, &pd->ndaddr, pd->af); 1023 break; 1024 } 1025 break; 1026 case PF_RDR: { 1027 struct pf_state_key_cmp key; 1028 int tries; 1029 uint16_t cut, low, high, nport; 1030 1031 reason = pf_map_addr_sn(pd->af, r, &pd->nsaddr, naddr, 1032 &(pd->naf), NULL, NULL, rpool, PF_SN_NAT); 1033 1034 if (reason != 0) 1035 goto notrans; 1036 if ((rpool->opts & PF_POOL_TYPEMASK) == PF_POOL_BITMASK) 1037 pf_poolmask(naddr, naddr, &rpool->cur->addr.v.a.mask, 1038 &pd->ndaddr, pd->af); 1039 1040 /* Do not change SCTP ports. */ 1041 if (pd->proto == IPPROTO_SCTP) 1042 break; 1043 1044 if (rpool->proxy_port[1]) { 1045 uint32_t tmp_nport; 1046 uint16_t div; 1047 1048 div = r->rdr.proxy_port[1] - r->rdr.proxy_port[0] + 1; 1049 div = (div == 0) ? 1 : div; 1050 1051 tmp_nport = ((ntohs(pd->ndport) - ntohs(r->dst.port[0])) % div) + 1052 rpool->proxy_port[0]; 1053 1054 /* Wrap around if necessary. */ 1055 if (tmp_nport > 65535) 1056 tmp_nport -= 65535; 1057 nport = htons((uint16_t)tmp_nport); 1058 } else if (rpool->proxy_port[0]) 1059 nport = htons(rpool->proxy_port[0]); 1060 else 1061 nport = pd->ndport; 1062 1063 /* 1064 * Update the destination port. 1065 */ 1066 *nportp = nport; 1067 1068 /* 1069 * Do we have a source port conflict in the stack state? Try to 1070 * modulate the source port if so. Note that this is racy since 1071 * the state lookup may not find any matches here but will once 1072 * pf_create_state() actually instantiates the state. 1073 */ 1074 bzero(&key, sizeof(key)); 1075 key.af = pd->af; 1076 key.proto = pd->proto; 1077 key.port[0] = pd->nsport; 1078 pf_addrcpy(&key.addr[0], &pd->nsaddr, key.af); 1079 key.port[1] = nport; 1080 pf_addrcpy(&key.addr[1], naddr, key.af); 1081 1082 if (!pf_find_state_all_exists(&key, PF_OUT)) 1083 break; 1084 1085 tries = 0; 1086 1087 low = 50001; /* XXX-MJ PF_NAT_PROXY_PORT_LOW/HIGH */ 1088 high = 65535; 1089 cut = arc4random() % (1 + high - low) + low; 1090 for (uint32_t tmp = cut; 1091 tmp <= high && tmp <= UINT16_MAX && 1092 tries < V_pf_rdr_srcport_rewrite_tries; 1093 tmp++, tries++) { 1094 key.port[0] = htons(tmp); 1095 if (!pf_find_state_all_exists(&key, PF_OUT)) { 1096 /* Update the source port. */ 1097 ctx->nk->port[0] = htons(tmp); 1098 goto out; 1099 } 1100 } 1101 for (uint32_t tmp = cut - 1; 1102 tmp >= low && tries < V_pf_rdr_srcport_rewrite_tries; 1103 tmp--, tries++) { 1104 key.port[0] = htons(tmp); 1105 if (!pf_find_state_all_exists(&key, PF_OUT)) { 1106 /* Update the source port. */ 1107 ctx->nk->port[0] = htons(tmp); 1108 goto out; 1109 } 1110 } 1111 1112 /* 1113 * We failed to find a match. Push on ahead anyway, let 1114 * pf_state_insert() be the arbiter of whether the state 1115 * conflict is tolerable. In particular, with TCP connections 1116 * the state may be reused if the TCP state is terminal. 1117 */ 1118 DPFPRINTF(PF_DEBUG_MISC, 1119 "pf: RDR source port allocation failed"); 1120 break; 1121 1122 out: 1123 DPFPRINTF(PF_DEBUG_MISC, 1124 "pf: RDR source port allocation %u->%u", 1125 ntohs(pd->nsport), ntohs(ctx->nk->port[0])); 1126 break; 1127 } 1128 default: 1129 panic("%s: unknown action %u", __func__, r->action); 1130 } 1131 1132 /* Return success only if translation really happened. */ 1133 if (bcmp(ctx->sk, ctx->nk, sizeof(struct pf_state_key_cmp))) { 1134 return (PFRES_MATCH); 1135 } 1136 1137 reason = PFRES_MAX; 1138 notrans: 1139 uma_zfree(V_pf_state_key_z, ctx->nk); 1140 uma_zfree(V_pf_state_key_z, ctx->sk); 1141 ctx->sk = ctx->nk = NULL; 1142 1143 return (reason); 1144 } 1145 1146 int 1147 pf_get_transaddr_af(struct pf_krule *r, struct pf_pdesc *pd) 1148 { 1149 #if defined(INET) && defined(INET6) 1150 struct pf_addr ndaddr, nsaddr, naddr; 1151 u_int16_t nport = 0; 1152 int prefixlen = 96; 1153 1154 bzero(&nsaddr, sizeof(nsaddr)); 1155 bzero(&ndaddr, sizeof(ndaddr)); 1156 1157 if (V_pf_status.debug >= PF_DEBUG_MISC) { 1158 printf("pf: af-to %s %s, ", 1159 pd->naf == AF_INET ? "inet" : "inet6", 1160 TAILQ_EMPTY(&r->rdr.list) ? "nat" : "rdr"); 1161 pf_print_host(&pd->nsaddr, pd->nsport, pd->af); 1162 printf(" -> "); 1163 pf_print_host(&pd->ndaddr, pd->ndport, pd->af); 1164 printf("\n"); 1165 } 1166 1167 if (TAILQ_EMPTY(&r->nat.list)) 1168 panic("pf_get_transaddr_af: no nat pool for source address"); 1169 1170 /* get source address and port */ 1171 if (pf_get_sport(pd, r, &nsaddr, &nport, r->nat.proxy_port[0], 1172 r->nat.proxy_port[1], &r->nat, NULL, PF_SN_NAT)) { 1173 DPFPRINTF(PF_DEBUG_MISC, 1174 "pf: af-to NAT proxy port allocation (%u-%u) failed", 1175 r->nat.proxy_port[0], r->nat.proxy_port[1]); 1176 return (-1); 1177 } 1178 1179 if (pd->proto == IPPROTO_ICMPV6 && pd->naf == AF_INET) { 1180 pd->ndport = ntohs(pd->ndport); 1181 if (pd->ndport == ICMP6_ECHO_REQUEST) 1182 pd->ndport = ICMP_ECHO; 1183 else if (pd->ndport == ICMP6_ECHO_REPLY) 1184 pd->ndport = ICMP_ECHOREPLY; 1185 pd->ndport = htons(pd->ndport); 1186 } else if (pd->proto == IPPROTO_ICMP && pd->naf == AF_INET6) { 1187 pd->nsport = ntohs(pd->nsport); 1188 if (pd->ndport == ICMP_ECHO) 1189 pd->ndport = ICMP6_ECHO_REQUEST; 1190 else if (pd->ndport == ICMP_ECHOREPLY) 1191 pd->ndport = ICMP6_ECHO_REPLY; 1192 pd->nsport = htons(pd->nsport); 1193 } 1194 1195 /* get the destination address and port */ 1196 if (! TAILQ_EMPTY(&r->rdr.list)) { 1197 if (pf_map_addr_sn(pd->naf, r, &nsaddr, &naddr, &(pd->naf), 1198 NULL, NULL, &r->rdr, PF_SN_NAT)) 1199 return (-1); 1200 if (r->rdr.proxy_port[0]) 1201 pd->ndport = htons(r->rdr.proxy_port[0]); 1202 1203 if (pd->naf == AF_INET) { 1204 /* The prefix is the IPv4 rdr address */ 1205 prefixlen = in_mask2len( 1206 (struct in_addr *)&r->rdr.cur->addr.v.a.mask); 1207 inet_nat46(pd->naf, &pd->ndaddr, &ndaddr, &naddr, 1208 prefixlen); 1209 } else { 1210 /* The prefix is the IPv6 rdr address */ 1211 prefixlen = in6_mask2len( 1212 (struct in6_addr *)&r->rdr.cur->addr.v.a.mask, NULL); 1213 inet_nat64(pd->naf, &pd->ndaddr, &ndaddr, &naddr, 1214 prefixlen); 1215 } 1216 } else { 1217 if (pd->naf == AF_INET) { 1218 /* The prefix is the IPv6 dst address */ 1219 prefixlen = in6_mask2len( 1220 (struct in6_addr *)&r->dst.addr.v.a.mask, NULL); 1221 if (prefixlen < 32) 1222 prefixlen = 96; 1223 inet_nat64(pd->naf, &pd->ndaddr, &ndaddr, &pd->ndaddr, 1224 prefixlen); 1225 } else { 1226 /* 1227 * The prefix is the IPv6 nat address 1228 * (that was stored in pd->nsaddr) 1229 */ 1230 prefixlen = in6_mask2len( 1231 (struct in6_addr *)&r->nat.cur->addr.v.a.mask, NULL); 1232 if (prefixlen > 96) 1233 prefixlen = 96; 1234 inet_nat64(pd->naf, &pd->ndaddr, &ndaddr, &nsaddr, 1235 prefixlen); 1236 } 1237 } 1238 1239 pf_addrcpy(&pd->nsaddr, &nsaddr, pd->naf); 1240 pf_addrcpy(&pd->ndaddr, &ndaddr, pd->naf); 1241 1242 if (V_pf_status.debug >= PF_DEBUG_MISC) { 1243 printf("pf: af-to %s done, prefixlen %d, ", 1244 pd->naf == AF_INET ? "inet" : "inet6", 1245 prefixlen); 1246 pf_print_host(&pd->nsaddr, pd->nsport, pd->naf); 1247 printf(" -> "); 1248 pf_print_host(&pd->ndaddr, pd->ndport, pd->naf); 1249 printf("\n"); 1250 } 1251 1252 return (0); 1253 #else 1254 return (-1); 1255 #endif 1256 } 1257