1 /*- 2 * Copyright (c) 2001 Daniel Hartmeier 3 * Copyright (c) 2002,2003 Henning Brauer 4 * Copyright (c) 2012 Gleb Smirnoff <glebius@FreeBSD.org> 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 * Effort sponsored in part by the Defense Advanced Research Projects 32 * Agency (DARPA) and Air Force Research Laboratory, Air Force 33 * Materiel Command, USAF, under agreement number F30602-01-2-0537. 34 * 35 * $OpenBSD: pf_ioctl.c,v 1.213 2009/02/15 21:46:12 mbalmer Exp $ 36 */ 37 38 #include <sys/cdefs.h> 39 __FBSDID("$FreeBSD$"); 40 41 #include "opt_inet.h" 42 #include "opt_inet6.h" 43 #include "opt_bpf.h" 44 #include "opt_pf.h" 45 46 #include <sys/param.h> 47 #include <sys/bus.h> 48 #include <sys/conf.h> 49 #include <sys/endian.h> 50 #include <sys/fcntl.h> 51 #include <sys/filio.h> 52 #include <sys/interrupt.h> 53 #include <sys/jail.h> 54 #include <sys/kernel.h> 55 #include <sys/kthread.h> 56 #include <sys/lock.h> 57 #include <sys/mbuf.h> 58 #include <sys/module.h> 59 #include <sys/proc.h> 60 #include <sys/rwlock.h> 61 #include <sys/smp.h> 62 #include <sys/socket.h> 63 #include <sys/sysctl.h> 64 #include <sys/md5.h> 65 #include <sys/ucred.h> 66 67 #include <net/if.h> 68 #include <net/if_var.h> 69 #include <net/vnet.h> 70 #include <net/route.h> 71 #include <net/pfil.h> 72 #include <net/pfvar.h> 73 #include <net/if_pfsync.h> 74 #include <net/if_pflog.h> 75 76 #include <netinet/in.h> 77 #include <netinet/ip.h> 78 #include <netinet/ip_var.h> 79 #include <netinet6/ip6_var.h> 80 #include <netinet/ip_icmp.h> 81 82 #ifdef INET6 83 #include <netinet/ip6.h> 84 #endif /* INET6 */ 85 86 #ifdef ALTQ 87 #include <altq/altq.h> 88 #endif 89 90 static int pfattach(void); 91 static struct pf_pool *pf_get_pool(char *, u_int32_t, u_int8_t, u_int32_t, 92 u_int8_t, u_int8_t, u_int8_t); 93 94 static void pf_mv_pool(struct pf_palist *, struct pf_palist *); 95 static void pf_empty_pool(struct pf_palist *); 96 static int pfioctl(struct cdev *, u_long, caddr_t, int, 97 struct thread *); 98 #ifdef ALTQ 99 static int pf_begin_altq(u_int32_t *); 100 static int pf_rollback_altq(u_int32_t); 101 static int pf_commit_altq(u_int32_t); 102 static int pf_enable_altq(struct pf_altq *); 103 static int pf_disable_altq(struct pf_altq *); 104 static u_int32_t pf_qname2qid(char *); 105 static void pf_qid_unref(u_int32_t); 106 #endif /* ALTQ */ 107 static int pf_begin_rules(u_int32_t *, int, const char *); 108 static int pf_rollback_rules(u_int32_t, int, char *); 109 static int pf_setup_pfsync_matching(struct pf_ruleset *); 110 static void pf_hash_rule(MD5_CTX *, struct pf_rule *); 111 static void pf_hash_rule_addr(MD5_CTX *, struct pf_rule_addr *); 112 static int pf_commit_rules(u_int32_t, int, char *); 113 static int pf_addr_setup(struct pf_ruleset *, 114 struct pf_addr_wrap *, sa_family_t); 115 static void pf_addr_copyout(struct pf_addr_wrap *); 116 117 VNET_DEFINE(struct pf_rule, pf_default_rule); 118 119 #ifdef ALTQ 120 static VNET_DEFINE(int, pf_altq_running); 121 #define V_pf_altq_running VNET(pf_altq_running) 122 #endif 123 124 #define TAGID_MAX 50000 125 struct pf_tagname { 126 TAILQ_ENTRY(pf_tagname) entries; 127 char name[PF_TAG_NAME_SIZE]; 128 uint16_t tag; 129 int ref; 130 }; 131 132 TAILQ_HEAD(pf_tags, pf_tagname); 133 #define V_pf_tags VNET(pf_tags) 134 VNET_DEFINE(struct pf_tags, pf_tags); 135 #define V_pf_qids VNET(pf_qids) 136 VNET_DEFINE(struct pf_tags, pf_qids); 137 static MALLOC_DEFINE(M_PFTAG, "pf_tag", "pf(4) tag names"); 138 static MALLOC_DEFINE(M_PFALTQ, "pf_altq", "pf(4) altq configuration db"); 139 static MALLOC_DEFINE(M_PFRULE, "pf_rule", "pf(4) rules"); 140 141 #if (PF_QNAME_SIZE != PF_TAG_NAME_SIZE) 142 #error PF_QNAME_SIZE must be equal to PF_TAG_NAME_SIZE 143 #endif 144 145 static u_int16_t tagname2tag(struct pf_tags *, char *); 146 static u_int16_t pf_tagname2tag(char *); 147 static void tag_unref(struct pf_tags *, u_int16_t); 148 149 #define DPFPRINTF(n, x) if (V_pf_status.debug >= (n)) printf x 150 151 struct cdev *pf_dev; 152 153 /* 154 * XXX - These are new and need to be checked when moveing to a new version 155 */ 156 static void pf_clear_states(void); 157 static int pf_clear_tables(void); 158 static void pf_clear_srcnodes(struct pf_src_node *); 159 static void pf_kill_srcnodes(struct pfioc_src_node_kill *); 160 static void pf_tbladdr_copyout(struct pf_addr_wrap *); 161 162 /* 163 * Wrapper functions for pfil(9) hooks 164 */ 165 #ifdef INET 166 static int pf_check_in(void *arg, struct mbuf **m, struct ifnet *ifp, 167 int dir, struct inpcb *inp); 168 static int pf_check_out(void *arg, struct mbuf **m, struct ifnet *ifp, 169 int dir, struct inpcb *inp); 170 #endif 171 #ifdef INET6 172 static int pf_check6_in(void *arg, struct mbuf **m, struct ifnet *ifp, 173 int dir, struct inpcb *inp); 174 static int pf_check6_out(void *arg, struct mbuf **m, struct ifnet *ifp, 175 int dir, struct inpcb *inp); 176 #endif 177 178 static int hook_pf(void); 179 static int dehook_pf(void); 180 static int shutdown_pf(void); 181 static int pf_load(void); 182 static int pf_unload(void); 183 184 static struct cdevsw pf_cdevsw = { 185 .d_ioctl = pfioctl, 186 .d_name = PF_NAME, 187 .d_version = D_VERSION, 188 }; 189 190 static volatile VNET_DEFINE(int, pf_pfil_hooked); 191 #define V_pf_pfil_hooked VNET(pf_pfil_hooked) 192 VNET_DEFINE(int, pf_end_threads); 193 194 struct rwlock pf_rules_lock; 195 struct sx pf_ioctl_lock; 196 197 /* pfsync */ 198 pfsync_state_import_t *pfsync_state_import_ptr = NULL; 199 pfsync_insert_state_t *pfsync_insert_state_ptr = NULL; 200 pfsync_update_state_t *pfsync_update_state_ptr = NULL; 201 pfsync_delete_state_t *pfsync_delete_state_ptr = NULL; 202 pfsync_clear_states_t *pfsync_clear_states_ptr = NULL; 203 pfsync_defer_t *pfsync_defer_ptr = NULL; 204 /* pflog */ 205 pflog_packet_t *pflog_packet_ptr = NULL; 206 207 static int 208 pfattach(void) 209 { 210 u_int32_t *my_timeout = V_pf_default_rule.timeout; 211 int error; 212 213 if (IS_DEFAULT_VNET(curvnet)) 214 pf_mtag_initialize(); 215 pf_initialize(); 216 pfr_initialize(); 217 pfi_initialize(); 218 pf_normalize_init(); 219 220 V_pf_limits[PF_LIMIT_STATES].limit = PFSTATE_HIWAT; 221 V_pf_limits[PF_LIMIT_SRC_NODES].limit = PFSNODE_HIWAT; 222 223 RB_INIT(&V_pf_anchors); 224 pf_init_ruleset(&pf_main_ruleset); 225 226 /* default rule should never be garbage collected */ 227 V_pf_default_rule.entries.tqe_prev = &V_pf_default_rule.entries.tqe_next; 228 #ifdef PF_DEFAULT_TO_DROP 229 V_pf_default_rule.action = PF_DROP; 230 #else 231 V_pf_default_rule.action = PF_PASS; 232 #endif 233 V_pf_default_rule.nr = -1; 234 V_pf_default_rule.rtableid = -1; 235 236 V_pf_default_rule.states_cur = counter_u64_alloc(M_WAITOK); 237 V_pf_default_rule.states_tot = counter_u64_alloc(M_WAITOK); 238 V_pf_default_rule.src_nodes = counter_u64_alloc(M_WAITOK); 239 240 /* initialize default timeouts */ 241 my_timeout[PFTM_TCP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL; 242 my_timeout[PFTM_TCP_OPENING] = PFTM_TCP_OPENING_VAL; 243 my_timeout[PFTM_TCP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL; 244 my_timeout[PFTM_TCP_CLOSING] = PFTM_TCP_CLOSING_VAL; 245 my_timeout[PFTM_TCP_FIN_WAIT] = PFTM_TCP_FIN_WAIT_VAL; 246 my_timeout[PFTM_TCP_CLOSED] = PFTM_TCP_CLOSED_VAL; 247 my_timeout[PFTM_UDP_FIRST_PACKET] = PFTM_UDP_FIRST_PACKET_VAL; 248 my_timeout[PFTM_UDP_SINGLE] = PFTM_UDP_SINGLE_VAL; 249 my_timeout[PFTM_UDP_MULTIPLE] = PFTM_UDP_MULTIPLE_VAL; 250 my_timeout[PFTM_ICMP_FIRST_PACKET] = PFTM_ICMP_FIRST_PACKET_VAL; 251 my_timeout[PFTM_ICMP_ERROR_REPLY] = PFTM_ICMP_ERROR_REPLY_VAL; 252 my_timeout[PFTM_OTHER_FIRST_PACKET] = PFTM_OTHER_FIRST_PACKET_VAL; 253 my_timeout[PFTM_OTHER_SINGLE] = PFTM_OTHER_SINGLE_VAL; 254 my_timeout[PFTM_OTHER_MULTIPLE] = PFTM_OTHER_MULTIPLE_VAL; 255 my_timeout[PFTM_FRAG] = PFTM_FRAG_VAL; 256 my_timeout[PFTM_INTERVAL] = PFTM_INTERVAL_VAL; 257 my_timeout[PFTM_SRC_NODE] = PFTM_SRC_NODE_VAL; 258 my_timeout[PFTM_TS_DIFF] = PFTM_TS_DIFF_VAL; 259 my_timeout[PFTM_ADAPTIVE_START] = PFSTATE_ADAPT_START; 260 my_timeout[PFTM_ADAPTIVE_END] = PFSTATE_ADAPT_END; 261 262 bzero(&V_pf_status, sizeof(V_pf_status)); 263 V_pf_status.debug = PF_DEBUG_URGENT; 264 265 V_pf_pfil_hooked = 0; 266 267 /* XXX do our best to avoid a conflict */ 268 V_pf_status.hostid = arc4random(); 269 270 for (int i = 0; i < PFRES_MAX; i++) 271 V_pf_status.counters[i] = counter_u64_alloc(M_WAITOK); 272 for (int i = 0; i < LCNT_MAX; i++) 273 V_pf_status.lcounters[i] = counter_u64_alloc(M_WAITOK); 274 for (int i = 0; i < FCNT_MAX; i++) 275 V_pf_status.fcounters[i] = counter_u64_alloc(M_WAITOK); 276 for (int i = 0; i < SCNT_MAX; i++) 277 V_pf_status.scounters[i] = counter_u64_alloc(M_WAITOK); 278 279 if ((error = kproc_create(pf_purge_thread, curvnet, NULL, 0, 0, 280 "pf purge")) != 0) 281 /* XXXGL: leaked all above. */ 282 return (error); 283 if ((error = swi_add(NULL, "pf send", pf_intr, curvnet, SWI_NET, 284 INTR_MPSAFE, &V_pf_swi_cookie)) != 0) 285 /* XXXGL: leaked all above. */ 286 return (error); 287 288 return (0); 289 } 290 291 static struct pf_pool * 292 pf_get_pool(char *anchor, u_int32_t ticket, u_int8_t rule_action, 293 u_int32_t rule_number, u_int8_t r_last, u_int8_t active, 294 u_int8_t check_ticket) 295 { 296 struct pf_ruleset *ruleset; 297 struct pf_rule *rule; 298 int rs_num; 299 300 ruleset = pf_find_ruleset(anchor); 301 if (ruleset == NULL) 302 return (NULL); 303 rs_num = pf_get_ruleset_number(rule_action); 304 if (rs_num >= PF_RULESET_MAX) 305 return (NULL); 306 if (active) { 307 if (check_ticket && ticket != 308 ruleset->rules[rs_num].active.ticket) 309 return (NULL); 310 if (r_last) 311 rule = TAILQ_LAST(ruleset->rules[rs_num].active.ptr, 312 pf_rulequeue); 313 else 314 rule = TAILQ_FIRST(ruleset->rules[rs_num].active.ptr); 315 } else { 316 if (check_ticket && ticket != 317 ruleset->rules[rs_num].inactive.ticket) 318 return (NULL); 319 if (r_last) 320 rule = TAILQ_LAST(ruleset->rules[rs_num].inactive.ptr, 321 pf_rulequeue); 322 else 323 rule = TAILQ_FIRST(ruleset->rules[rs_num].inactive.ptr); 324 } 325 if (!r_last) { 326 while ((rule != NULL) && (rule->nr != rule_number)) 327 rule = TAILQ_NEXT(rule, entries); 328 } 329 if (rule == NULL) 330 return (NULL); 331 332 return (&rule->rpool); 333 } 334 335 static void 336 pf_mv_pool(struct pf_palist *poola, struct pf_palist *poolb) 337 { 338 struct pf_pooladdr *mv_pool_pa; 339 340 while ((mv_pool_pa = TAILQ_FIRST(poola)) != NULL) { 341 TAILQ_REMOVE(poola, mv_pool_pa, entries); 342 TAILQ_INSERT_TAIL(poolb, mv_pool_pa, entries); 343 } 344 } 345 346 static void 347 pf_empty_pool(struct pf_palist *poola) 348 { 349 struct pf_pooladdr *pa; 350 351 while ((pa = TAILQ_FIRST(poola)) != NULL) { 352 switch (pa->addr.type) { 353 case PF_ADDR_DYNIFTL: 354 pfi_dynaddr_remove(pa->addr.p.dyn); 355 break; 356 case PF_ADDR_TABLE: 357 /* XXX: this could be unfinished pooladdr on pabuf */ 358 if (pa->addr.p.tbl != NULL) 359 pfr_detach_table(pa->addr.p.tbl); 360 break; 361 } 362 if (pa->kif) 363 pfi_kif_unref(pa->kif); 364 TAILQ_REMOVE(poola, pa, entries); 365 free(pa, M_PFRULE); 366 } 367 } 368 369 static void 370 pf_unlink_rule(struct pf_rulequeue *rulequeue, struct pf_rule *rule) 371 { 372 373 PF_RULES_WASSERT(); 374 375 TAILQ_REMOVE(rulequeue, rule, entries); 376 377 PF_UNLNKDRULES_LOCK(); 378 rule->rule_flag |= PFRULE_REFS; 379 TAILQ_INSERT_TAIL(&V_pf_unlinked_rules, rule, entries); 380 PF_UNLNKDRULES_UNLOCK(); 381 } 382 383 void 384 pf_free_rule(struct pf_rule *rule) 385 { 386 387 PF_RULES_WASSERT(); 388 389 if (rule->tag) 390 tag_unref(&V_pf_tags, rule->tag); 391 if (rule->match_tag) 392 tag_unref(&V_pf_tags, rule->match_tag); 393 #ifdef ALTQ 394 if (rule->pqid != rule->qid) 395 pf_qid_unref(rule->pqid); 396 pf_qid_unref(rule->qid); 397 #endif 398 switch (rule->src.addr.type) { 399 case PF_ADDR_DYNIFTL: 400 pfi_dynaddr_remove(rule->src.addr.p.dyn); 401 break; 402 case PF_ADDR_TABLE: 403 pfr_detach_table(rule->src.addr.p.tbl); 404 break; 405 } 406 switch (rule->dst.addr.type) { 407 case PF_ADDR_DYNIFTL: 408 pfi_dynaddr_remove(rule->dst.addr.p.dyn); 409 break; 410 case PF_ADDR_TABLE: 411 pfr_detach_table(rule->dst.addr.p.tbl); 412 break; 413 } 414 if (rule->overload_tbl) 415 pfr_detach_table(rule->overload_tbl); 416 if (rule->kif) 417 pfi_kif_unref(rule->kif); 418 pf_anchor_remove(rule); 419 pf_empty_pool(&rule->rpool.list); 420 counter_u64_free(rule->states_cur); 421 counter_u64_free(rule->states_tot); 422 counter_u64_free(rule->src_nodes); 423 free(rule, M_PFRULE); 424 } 425 426 static u_int16_t 427 tagname2tag(struct pf_tags *head, char *tagname) 428 { 429 struct pf_tagname *tag, *p = NULL; 430 u_int16_t new_tagid = 1; 431 432 PF_RULES_WASSERT(); 433 434 TAILQ_FOREACH(tag, head, entries) 435 if (strcmp(tagname, tag->name) == 0) { 436 tag->ref++; 437 return (tag->tag); 438 } 439 440 /* 441 * to avoid fragmentation, we do a linear search from the beginning 442 * and take the first free slot we find. if there is none or the list 443 * is empty, append a new entry at the end. 444 */ 445 446 /* new entry */ 447 if (!TAILQ_EMPTY(head)) 448 for (p = TAILQ_FIRST(head); p != NULL && 449 p->tag == new_tagid; p = TAILQ_NEXT(p, entries)) 450 new_tagid = p->tag + 1; 451 452 if (new_tagid > TAGID_MAX) 453 return (0); 454 455 /* allocate and fill new struct pf_tagname */ 456 tag = malloc(sizeof(*tag), M_PFTAG, M_NOWAIT|M_ZERO); 457 if (tag == NULL) 458 return (0); 459 strlcpy(tag->name, tagname, sizeof(tag->name)); 460 tag->tag = new_tagid; 461 tag->ref++; 462 463 if (p != NULL) /* insert new entry before p */ 464 TAILQ_INSERT_BEFORE(p, tag, entries); 465 else /* either list empty or no free slot in between */ 466 TAILQ_INSERT_TAIL(head, tag, entries); 467 468 return (tag->tag); 469 } 470 471 static void 472 tag_unref(struct pf_tags *head, u_int16_t tag) 473 { 474 struct pf_tagname *p, *next; 475 476 PF_RULES_WASSERT(); 477 478 for (p = TAILQ_FIRST(head); p != NULL; p = next) { 479 next = TAILQ_NEXT(p, entries); 480 if (tag == p->tag) { 481 if (--p->ref == 0) { 482 TAILQ_REMOVE(head, p, entries); 483 free(p, M_PFTAG); 484 } 485 break; 486 } 487 } 488 } 489 490 static u_int16_t 491 pf_tagname2tag(char *tagname) 492 { 493 return (tagname2tag(&V_pf_tags, tagname)); 494 } 495 496 #ifdef ALTQ 497 static u_int32_t 498 pf_qname2qid(char *qname) 499 { 500 return ((u_int32_t)tagname2tag(&V_pf_qids, qname)); 501 } 502 503 static void 504 pf_qid_unref(u_int32_t qid) 505 { 506 tag_unref(&V_pf_qids, (u_int16_t)qid); 507 } 508 509 static int 510 pf_begin_altq(u_int32_t *ticket) 511 { 512 struct pf_altq *altq; 513 int error = 0; 514 515 PF_RULES_WASSERT(); 516 517 /* Purge the old altq list */ 518 while ((altq = TAILQ_FIRST(V_pf_altqs_inactive)) != NULL) { 519 TAILQ_REMOVE(V_pf_altqs_inactive, altq, entries); 520 if (altq->qname[0] == 0 && 521 (altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) { 522 /* detach and destroy the discipline */ 523 error = altq_remove(altq); 524 } else 525 pf_qid_unref(altq->qid); 526 free(altq, M_PFALTQ); 527 } 528 if (error) 529 return (error); 530 *ticket = ++V_ticket_altqs_inactive; 531 V_altqs_inactive_open = 1; 532 return (0); 533 } 534 535 static int 536 pf_rollback_altq(u_int32_t ticket) 537 { 538 struct pf_altq *altq; 539 int error = 0; 540 541 PF_RULES_WASSERT(); 542 543 if (!V_altqs_inactive_open || ticket != V_ticket_altqs_inactive) 544 return (0); 545 /* Purge the old altq list */ 546 while ((altq = TAILQ_FIRST(V_pf_altqs_inactive)) != NULL) { 547 TAILQ_REMOVE(V_pf_altqs_inactive, altq, entries); 548 if (altq->qname[0] == 0 && 549 (altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) { 550 /* detach and destroy the discipline */ 551 error = altq_remove(altq); 552 } else 553 pf_qid_unref(altq->qid); 554 free(altq, M_PFALTQ); 555 } 556 V_altqs_inactive_open = 0; 557 return (error); 558 } 559 560 static int 561 pf_commit_altq(u_int32_t ticket) 562 { 563 struct pf_altqqueue *old_altqs; 564 struct pf_altq *altq; 565 int err, error = 0; 566 567 PF_RULES_WASSERT(); 568 569 if (!V_altqs_inactive_open || ticket != V_ticket_altqs_inactive) 570 return (EBUSY); 571 572 /* swap altqs, keep the old. */ 573 old_altqs = V_pf_altqs_active; 574 V_pf_altqs_active = V_pf_altqs_inactive; 575 V_pf_altqs_inactive = old_altqs; 576 V_ticket_altqs_active = V_ticket_altqs_inactive; 577 578 /* Attach new disciplines */ 579 TAILQ_FOREACH(altq, V_pf_altqs_active, entries) { 580 if (altq->qname[0] == 0 && 581 (altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) { 582 /* attach the discipline */ 583 error = altq_pfattach(altq); 584 if (error == 0 && V_pf_altq_running) 585 error = pf_enable_altq(altq); 586 if (error != 0) 587 return (error); 588 } 589 } 590 591 /* Purge the old altq list */ 592 while ((altq = TAILQ_FIRST(V_pf_altqs_inactive)) != NULL) { 593 TAILQ_REMOVE(V_pf_altqs_inactive, altq, entries); 594 if (altq->qname[0] == 0 && 595 (altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) { 596 /* detach and destroy the discipline */ 597 if (V_pf_altq_running) 598 error = pf_disable_altq(altq); 599 err = altq_pfdetach(altq); 600 if (err != 0 && error == 0) 601 error = err; 602 err = altq_remove(altq); 603 if (err != 0 && error == 0) 604 error = err; 605 } else 606 pf_qid_unref(altq->qid); 607 free(altq, M_PFALTQ); 608 } 609 610 V_altqs_inactive_open = 0; 611 return (error); 612 } 613 614 static int 615 pf_enable_altq(struct pf_altq *altq) 616 { 617 struct ifnet *ifp; 618 struct tb_profile tb; 619 int error = 0; 620 621 if ((ifp = ifunit(altq->ifname)) == NULL) 622 return (EINVAL); 623 624 if (ifp->if_snd.altq_type != ALTQT_NONE) 625 error = altq_enable(&ifp->if_snd); 626 627 /* set tokenbucket regulator */ 628 if (error == 0 && ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) { 629 tb.rate = altq->ifbandwidth; 630 tb.depth = altq->tbrsize; 631 error = tbr_set(&ifp->if_snd, &tb); 632 } 633 634 return (error); 635 } 636 637 static int 638 pf_disable_altq(struct pf_altq *altq) 639 { 640 struct ifnet *ifp; 641 struct tb_profile tb; 642 int error; 643 644 if ((ifp = ifunit(altq->ifname)) == NULL) 645 return (EINVAL); 646 647 /* 648 * when the discipline is no longer referenced, it was overridden 649 * by a new one. if so, just return. 650 */ 651 if (altq->altq_disc != ifp->if_snd.altq_disc) 652 return (0); 653 654 error = altq_disable(&ifp->if_snd); 655 656 if (error == 0) { 657 /* clear tokenbucket regulator */ 658 tb.rate = 0; 659 error = tbr_set(&ifp->if_snd, &tb); 660 } 661 662 return (error); 663 } 664 665 void 666 pf_altq_ifnet_event(struct ifnet *ifp, int remove) 667 { 668 struct ifnet *ifp1; 669 struct pf_altq *a1, *a2, *a3; 670 u_int32_t ticket; 671 int error = 0; 672 673 /* Interrupt userland queue modifications */ 674 if (V_altqs_inactive_open) 675 pf_rollback_altq(V_ticket_altqs_inactive); 676 677 /* Start new altq ruleset */ 678 if (pf_begin_altq(&ticket)) 679 return; 680 681 /* Copy the current active set */ 682 TAILQ_FOREACH(a1, V_pf_altqs_active, entries) { 683 a2 = malloc(sizeof(*a2), M_PFALTQ, M_NOWAIT); 684 if (a2 == NULL) { 685 error = ENOMEM; 686 break; 687 } 688 bcopy(a1, a2, sizeof(struct pf_altq)); 689 690 if (a2->qname[0] != 0) { 691 if ((a2->qid = pf_qname2qid(a2->qname)) == 0) { 692 error = EBUSY; 693 free(a2, M_PFALTQ); 694 break; 695 } 696 a2->altq_disc = NULL; 697 TAILQ_FOREACH(a3, V_pf_altqs_inactive, entries) { 698 if (strncmp(a3->ifname, a2->ifname, 699 IFNAMSIZ) == 0 && a3->qname[0] == 0) { 700 a2->altq_disc = a3->altq_disc; 701 break; 702 } 703 } 704 } 705 /* Deactivate the interface in question */ 706 a2->local_flags &= ~PFALTQ_FLAG_IF_REMOVED; 707 if ((ifp1 = ifunit(a2->ifname)) == NULL || 708 (remove && ifp1 == ifp)) { 709 a2->local_flags |= PFALTQ_FLAG_IF_REMOVED; 710 } else { 711 error = altq_add(a2); 712 713 if (ticket != V_ticket_altqs_inactive) 714 error = EBUSY; 715 716 if (error) { 717 free(a2, M_PFALTQ); 718 break; 719 } 720 } 721 722 TAILQ_INSERT_TAIL(V_pf_altqs_inactive, a2, entries); 723 } 724 725 if (error != 0) 726 pf_rollback_altq(ticket); 727 else 728 pf_commit_altq(ticket); 729 } 730 #endif /* ALTQ */ 731 732 static int 733 pf_begin_rules(u_int32_t *ticket, int rs_num, const char *anchor) 734 { 735 struct pf_ruleset *rs; 736 struct pf_rule *rule; 737 738 PF_RULES_WASSERT(); 739 740 if (rs_num < 0 || rs_num >= PF_RULESET_MAX) 741 return (EINVAL); 742 rs = pf_find_or_create_ruleset(anchor); 743 if (rs == NULL) 744 return (EINVAL); 745 while ((rule = TAILQ_FIRST(rs->rules[rs_num].inactive.ptr)) != NULL) { 746 pf_unlink_rule(rs->rules[rs_num].inactive.ptr, rule); 747 rs->rules[rs_num].inactive.rcount--; 748 } 749 *ticket = ++rs->rules[rs_num].inactive.ticket; 750 rs->rules[rs_num].inactive.open = 1; 751 return (0); 752 } 753 754 static int 755 pf_rollback_rules(u_int32_t ticket, int rs_num, char *anchor) 756 { 757 struct pf_ruleset *rs; 758 struct pf_rule *rule; 759 760 PF_RULES_WASSERT(); 761 762 if (rs_num < 0 || rs_num >= PF_RULESET_MAX) 763 return (EINVAL); 764 rs = pf_find_ruleset(anchor); 765 if (rs == NULL || !rs->rules[rs_num].inactive.open || 766 rs->rules[rs_num].inactive.ticket != ticket) 767 return (0); 768 while ((rule = TAILQ_FIRST(rs->rules[rs_num].inactive.ptr)) != NULL) { 769 pf_unlink_rule(rs->rules[rs_num].inactive.ptr, rule); 770 rs->rules[rs_num].inactive.rcount--; 771 } 772 rs->rules[rs_num].inactive.open = 0; 773 return (0); 774 } 775 776 #define PF_MD5_UPD(st, elm) \ 777 MD5Update(ctx, (u_int8_t *) &(st)->elm, sizeof((st)->elm)) 778 779 #define PF_MD5_UPD_STR(st, elm) \ 780 MD5Update(ctx, (u_int8_t *) (st)->elm, strlen((st)->elm)) 781 782 #define PF_MD5_UPD_HTONL(st, elm, stor) do { \ 783 (stor) = htonl((st)->elm); \ 784 MD5Update(ctx, (u_int8_t *) &(stor), sizeof(u_int32_t));\ 785 } while (0) 786 787 #define PF_MD5_UPD_HTONS(st, elm, stor) do { \ 788 (stor) = htons((st)->elm); \ 789 MD5Update(ctx, (u_int8_t *) &(stor), sizeof(u_int16_t));\ 790 } while (0) 791 792 static void 793 pf_hash_rule_addr(MD5_CTX *ctx, struct pf_rule_addr *pfr) 794 { 795 PF_MD5_UPD(pfr, addr.type); 796 switch (pfr->addr.type) { 797 case PF_ADDR_DYNIFTL: 798 PF_MD5_UPD(pfr, addr.v.ifname); 799 PF_MD5_UPD(pfr, addr.iflags); 800 break; 801 case PF_ADDR_TABLE: 802 PF_MD5_UPD(pfr, addr.v.tblname); 803 break; 804 case PF_ADDR_ADDRMASK: 805 /* XXX ignore af? */ 806 PF_MD5_UPD(pfr, addr.v.a.addr.addr32); 807 PF_MD5_UPD(pfr, addr.v.a.mask.addr32); 808 break; 809 } 810 811 PF_MD5_UPD(pfr, port[0]); 812 PF_MD5_UPD(pfr, port[1]); 813 PF_MD5_UPD(pfr, neg); 814 PF_MD5_UPD(pfr, port_op); 815 } 816 817 static void 818 pf_hash_rule(MD5_CTX *ctx, struct pf_rule *rule) 819 { 820 u_int16_t x; 821 u_int32_t y; 822 823 pf_hash_rule_addr(ctx, &rule->src); 824 pf_hash_rule_addr(ctx, &rule->dst); 825 PF_MD5_UPD_STR(rule, label); 826 PF_MD5_UPD_STR(rule, ifname); 827 PF_MD5_UPD_STR(rule, match_tagname); 828 PF_MD5_UPD_HTONS(rule, match_tag, x); /* dup? */ 829 PF_MD5_UPD_HTONL(rule, os_fingerprint, y); 830 PF_MD5_UPD_HTONL(rule, prob, y); 831 PF_MD5_UPD_HTONL(rule, uid.uid[0], y); 832 PF_MD5_UPD_HTONL(rule, uid.uid[1], y); 833 PF_MD5_UPD(rule, uid.op); 834 PF_MD5_UPD_HTONL(rule, gid.gid[0], y); 835 PF_MD5_UPD_HTONL(rule, gid.gid[1], y); 836 PF_MD5_UPD(rule, gid.op); 837 PF_MD5_UPD_HTONL(rule, rule_flag, y); 838 PF_MD5_UPD(rule, action); 839 PF_MD5_UPD(rule, direction); 840 PF_MD5_UPD(rule, af); 841 PF_MD5_UPD(rule, quick); 842 PF_MD5_UPD(rule, ifnot); 843 PF_MD5_UPD(rule, match_tag_not); 844 PF_MD5_UPD(rule, natpass); 845 PF_MD5_UPD(rule, keep_state); 846 PF_MD5_UPD(rule, proto); 847 PF_MD5_UPD(rule, type); 848 PF_MD5_UPD(rule, code); 849 PF_MD5_UPD(rule, flags); 850 PF_MD5_UPD(rule, flagset); 851 PF_MD5_UPD(rule, allow_opts); 852 PF_MD5_UPD(rule, rt); 853 PF_MD5_UPD(rule, tos); 854 } 855 856 static int 857 pf_commit_rules(u_int32_t ticket, int rs_num, char *anchor) 858 { 859 struct pf_ruleset *rs; 860 struct pf_rule *rule, **old_array; 861 struct pf_rulequeue *old_rules; 862 int error; 863 u_int32_t old_rcount; 864 865 PF_RULES_WASSERT(); 866 867 if (rs_num < 0 || rs_num >= PF_RULESET_MAX) 868 return (EINVAL); 869 rs = pf_find_ruleset(anchor); 870 if (rs == NULL || !rs->rules[rs_num].inactive.open || 871 ticket != rs->rules[rs_num].inactive.ticket) 872 return (EBUSY); 873 874 /* Calculate checksum for the main ruleset */ 875 if (rs == &pf_main_ruleset) { 876 error = pf_setup_pfsync_matching(rs); 877 if (error != 0) 878 return (error); 879 } 880 881 /* Swap rules, keep the old. */ 882 old_rules = rs->rules[rs_num].active.ptr; 883 old_rcount = rs->rules[rs_num].active.rcount; 884 old_array = rs->rules[rs_num].active.ptr_array; 885 886 rs->rules[rs_num].active.ptr = 887 rs->rules[rs_num].inactive.ptr; 888 rs->rules[rs_num].active.ptr_array = 889 rs->rules[rs_num].inactive.ptr_array; 890 rs->rules[rs_num].active.rcount = 891 rs->rules[rs_num].inactive.rcount; 892 rs->rules[rs_num].inactive.ptr = old_rules; 893 rs->rules[rs_num].inactive.ptr_array = old_array; 894 rs->rules[rs_num].inactive.rcount = old_rcount; 895 896 rs->rules[rs_num].active.ticket = 897 rs->rules[rs_num].inactive.ticket; 898 pf_calc_skip_steps(rs->rules[rs_num].active.ptr); 899 900 901 /* Purge the old rule list. */ 902 while ((rule = TAILQ_FIRST(old_rules)) != NULL) 903 pf_unlink_rule(old_rules, rule); 904 if (rs->rules[rs_num].inactive.ptr_array) 905 free(rs->rules[rs_num].inactive.ptr_array, M_TEMP); 906 rs->rules[rs_num].inactive.ptr_array = NULL; 907 rs->rules[rs_num].inactive.rcount = 0; 908 rs->rules[rs_num].inactive.open = 0; 909 pf_remove_if_empty_ruleset(rs); 910 911 return (0); 912 } 913 914 static int 915 pf_setup_pfsync_matching(struct pf_ruleset *rs) 916 { 917 MD5_CTX ctx; 918 struct pf_rule *rule; 919 int rs_cnt; 920 u_int8_t digest[PF_MD5_DIGEST_LENGTH]; 921 922 MD5Init(&ctx); 923 for (rs_cnt = 0; rs_cnt < PF_RULESET_MAX; rs_cnt++) { 924 /* XXX PF_RULESET_SCRUB as well? */ 925 if (rs_cnt == PF_RULESET_SCRUB) 926 continue; 927 928 if (rs->rules[rs_cnt].inactive.ptr_array) 929 free(rs->rules[rs_cnt].inactive.ptr_array, M_TEMP); 930 rs->rules[rs_cnt].inactive.ptr_array = NULL; 931 932 if (rs->rules[rs_cnt].inactive.rcount) { 933 rs->rules[rs_cnt].inactive.ptr_array = 934 malloc(sizeof(caddr_t) * 935 rs->rules[rs_cnt].inactive.rcount, 936 M_TEMP, M_NOWAIT); 937 938 if (!rs->rules[rs_cnt].inactive.ptr_array) 939 return (ENOMEM); 940 } 941 942 TAILQ_FOREACH(rule, rs->rules[rs_cnt].inactive.ptr, 943 entries) { 944 pf_hash_rule(&ctx, rule); 945 (rs->rules[rs_cnt].inactive.ptr_array)[rule->nr] = rule; 946 } 947 } 948 949 MD5Final(digest, &ctx); 950 memcpy(V_pf_status.pf_chksum, digest, sizeof(V_pf_status.pf_chksum)); 951 return (0); 952 } 953 954 static int 955 pf_addr_setup(struct pf_ruleset *ruleset, struct pf_addr_wrap *addr, 956 sa_family_t af) 957 { 958 int error = 0; 959 960 switch (addr->type) { 961 case PF_ADDR_TABLE: 962 addr->p.tbl = pfr_attach_table(ruleset, addr->v.tblname); 963 if (addr->p.tbl == NULL) 964 error = ENOMEM; 965 break; 966 case PF_ADDR_DYNIFTL: 967 error = pfi_dynaddr_setup(addr, af); 968 break; 969 } 970 971 return (error); 972 } 973 974 static void 975 pf_addr_copyout(struct pf_addr_wrap *addr) 976 { 977 978 switch (addr->type) { 979 case PF_ADDR_DYNIFTL: 980 pfi_dynaddr_copyout(addr); 981 break; 982 case PF_ADDR_TABLE: 983 pf_tbladdr_copyout(addr); 984 break; 985 } 986 } 987 988 static int 989 pfioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flags, struct thread *td) 990 { 991 int error = 0; 992 993 /* XXX keep in sync with switch() below */ 994 if (securelevel_gt(td->td_ucred, 2)) 995 switch (cmd) { 996 case DIOCGETRULES: 997 case DIOCGETRULE: 998 case DIOCGETADDRS: 999 case DIOCGETADDR: 1000 case DIOCGETSTATE: 1001 case DIOCSETSTATUSIF: 1002 case DIOCGETSTATUS: 1003 case DIOCCLRSTATUS: 1004 case DIOCNATLOOK: 1005 case DIOCSETDEBUG: 1006 case DIOCGETSTATES: 1007 case DIOCGETTIMEOUT: 1008 case DIOCCLRRULECTRS: 1009 case DIOCGETLIMIT: 1010 case DIOCGETALTQS: 1011 case DIOCGETALTQ: 1012 case DIOCGETQSTATS: 1013 case DIOCGETRULESETS: 1014 case DIOCGETRULESET: 1015 case DIOCRGETTABLES: 1016 case DIOCRGETTSTATS: 1017 case DIOCRCLRTSTATS: 1018 case DIOCRCLRADDRS: 1019 case DIOCRADDADDRS: 1020 case DIOCRDELADDRS: 1021 case DIOCRSETADDRS: 1022 case DIOCRGETADDRS: 1023 case DIOCRGETASTATS: 1024 case DIOCRCLRASTATS: 1025 case DIOCRTSTADDRS: 1026 case DIOCOSFPGET: 1027 case DIOCGETSRCNODES: 1028 case DIOCCLRSRCNODES: 1029 case DIOCIGETIFACES: 1030 case DIOCGIFSPEED: 1031 case DIOCSETIFFLAG: 1032 case DIOCCLRIFFLAG: 1033 break; 1034 case DIOCRCLRTABLES: 1035 case DIOCRADDTABLES: 1036 case DIOCRDELTABLES: 1037 case DIOCRSETTFLAGS: 1038 if (((struct pfioc_table *)addr)->pfrio_flags & 1039 PFR_FLAG_DUMMY) 1040 break; /* dummy operation ok */ 1041 return (EPERM); 1042 default: 1043 return (EPERM); 1044 } 1045 1046 if (!(flags & FWRITE)) 1047 switch (cmd) { 1048 case DIOCGETRULES: 1049 case DIOCGETADDRS: 1050 case DIOCGETADDR: 1051 case DIOCGETSTATE: 1052 case DIOCGETSTATUS: 1053 case DIOCGETSTATES: 1054 case DIOCGETTIMEOUT: 1055 case DIOCGETLIMIT: 1056 case DIOCGETALTQS: 1057 case DIOCGETALTQ: 1058 case DIOCGETQSTATS: 1059 case DIOCGETRULESETS: 1060 case DIOCGETRULESET: 1061 case DIOCNATLOOK: 1062 case DIOCRGETTABLES: 1063 case DIOCRGETTSTATS: 1064 case DIOCRGETADDRS: 1065 case DIOCRGETASTATS: 1066 case DIOCRTSTADDRS: 1067 case DIOCOSFPGET: 1068 case DIOCGETSRCNODES: 1069 case DIOCIGETIFACES: 1070 case DIOCGIFSPEED: 1071 break; 1072 case DIOCRCLRTABLES: 1073 case DIOCRADDTABLES: 1074 case DIOCRDELTABLES: 1075 case DIOCRCLRTSTATS: 1076 case DIOCRCLRADDRS: 1077 case DIOCRADDADDRS: 1078 case DIOCRDELADDRS: 1079 case DIOCRSETADDRS: 1080 case DIOCRSETTFLAGS: 1081 if (((struct pfioc_table *)addr)->pfrio_flags & 1082 PFR_FLAG_DUMMY) { 1083 flags |= FWRITE; /* need write lock for dummy */ 1084 break; /* dummy operation ok */ 1085 } 1086 return (EACCES); 1087 case DIOCGETRULE: 1088 if (((struct pfioc_rule *)addr)->action == 1089 PF_GET_CLR_CNTR) 1090 return (EACCES); 1091 break; 1092 default: 1093 return (EACCES); 1094 } 1095 1096 CURVNET_SET(TD_TO_VNET(td)); 1097 1098 switch (cmd) { 1099 case DIOCSTART: 1100 sx_xlock(&pf_ioctl_lock); 1101 if (V_pf_status.running) 1102 error = EEXIST; 1103 else { 1104 int cpu; 1105 1106 error = hook_pf(); 1107 if (error) { 1108 DPFPRINTF(PF_DEBUG_MISC, 1109 ("pf: pfil registration failed\n")); 1110 break; 1111 } 1112 V_pf_status.running = 1; 1113 V_pf_status.since = time_second; 1114 1115 CPU_FOREACH(cpu) 1116 V_pf_stateid[cpu] = time_second; 1117 1118 DPFPRINTF(PF_DEBUG_MISC, ("pf: started\n")); 1119 } 1120 break; 1121 1122 case DIOCSTOP: 1123 sx_xlock(&pf_ioctl_lock); 1124 if (!V_pf_status.running) 1125 error = ENOENT; 1126 else { 1127 V_pf_status.running = 0; 1128 error = dehook_pf(); 1129 if (error) { 1130 V_pf_status.running = 1; 1131 DPFPRINTF(PF_DEBUG_MISC, 1132 ("pf: pfil unregistration failed\n")); 1133 } 1134 V_pf_status.since = time_second; 1135 DPFPRINTF(PF_DEBUG_MISC, ("pf: stopped\n")); 1136 } 1137 break; 1138 1139 case DIOCADDRULE: { 1140 struct pfioc_rule *pr = (struct pfioc_rule *)addr; 1141 struct pf_ruleset *ruleset; 1142 struct pf_rule *rule, *tail; 1143 struct pf_pooladdr *pa; 1144 struct pfi_kif *kif = NULL; 1145 int rs_num; 1146 1147 if (pr->rule.return_icmp >> 8 > ICMP_MAXTYPE) { 1148 error = EINVAL; 1149 break; 1150 } 1151 #ifndef INET 1152 if (pr->rule.af == AF_INET) { 1153 error = EAFNOSUPPORT; 1154 break; 1155 } 1156 #endif /* INET */ 1157 #ifndef INET6 1158 if (pr->rule.af == AF_INET6) { 1159 error = EAFNOSUPPORT; 1160 break; 1161 } 1162 #endif /* INET6 */ 1163 1164 rule = malloc(sizeof(*rule), M_PFRULE, M_WAITOK); 1165 bcopy(&pr->rule, rule, sizeof(struct pf_rule)); 1166 if (rule->ifname[0]) 1167 kif = malloc(sizeof(*kif), PFI_MTYPE, M_WAITOK); 1168 rule->states_cur = counter_u64_alloc(M_WAITOK); 1169 rule->states_tot = counter_u64_alloc(M_WAITOK); 1170 rule->src_nodes = counter_u64_alloc(M_WAITOK); 1171 rule->cuid = td->td_ucred->cr_ruid; 1172 rule->cpid = td->td_proc ? td->td_proc->p_pid : 0; 1173 TAILQ_INIT(&rule->rpool.list); 1174 1175 #define ERROUT(x) { error = (x); goto DIOCADDRULE_error; } 1176 1177 PF_RULES_WLOCK(); 1178 pr->anchor[sizeof(pr->anchor) - 1] = 0; 1179 ruleset = pf_find_ruleset(pr->anchor); 1180 if (ruleset == NULL) 1181 ERROUT(EINVAL); 1182 rs_num = pf_get_ruleset_number(pr->rule.action); 1183 if (rs_num >= PF_RULESET_MAX) 1184 ERROUT(EINVAL); 1185 if (pr->ticket != ruleset->rules[rs_num].inactive.ticket) { 1186 DPFPRINTF(PF_DEBUG_MISC, 1187 ("ticket: %d != [%d]%d\n", pr->ticket, rs_num, 1188 ruleset->rules[rs_num].inactive.ticket)); 1189 ERROUT(EBUSY); 1190 } 1191 if (pr->pool_ticket != V_ticket_pabuf) { 1192 DPFPRINTF(PF_DEBUG_MISC, 1193 ("pool_ticket: %d != %d\n", pr->pool_ticket, 1194 V_ticket_pabuf)); 1195 ERROUT(EBUSY); 1196 } 1197 1198 tail = TAILQ_LAST(ruleset->rules[rs_num].inactive.ptr, 1199 pf_rulequeue); 1200 if (tail) 1201 rule->nr = tail->nr + 1; 1202 else 1203 rule->nr = 0; 1204 if (rule->ifname[0]) { 1205 rule->kif = pfi_kif_attach(kif, rule->ifname); 1206 pfi_kif_ref(rule->kif); 1207 } else 1208 rule->kif = NULL; 1209 1210 if (rule->rtableid > 0 && rule->rtableid >= rt_numfibs) 1211 error = EBUSY; 1212 1213 #ifdef ALTQ 1214 /* set queue IDs */ 1215 if (rule->qname[0] != 0) { 1216 if ((rule->qid = pf_qname2qid(rule->qname)) == 0) 1217 error = EBUSY; 1218 else if (rule->pqname[0] != 0) { 1219 if ((rule->pqid = 1220 pf_qname2qid(rule->pqname)) == 0) 1221 error = EBUSY; 1222 } else 1223 rule->pqid = rule->qid; 1224 } 1225 #endif 1226 if (rule->tagname[0]) 1227 if ((rule->tag = pf_tagname2tag(rule->tagname)) == 0) 1228 error = EBUSY; 1229 if (rule->match_tagname[0]) 1230 if ((rule->match_tag = 1231 pf_tagname2tag(rule->match_tagname)) == 0) 1232 error = EBUSY; 1233 if (rule->rt && !rule->direction) 1234 error = EINVAL; 1235 if (!rule->log) 1236 rule->logif = 0; 1237 if (rule->logif >= PFLOGIFS_MAX) 1238 error = EINVAL; 1239 if (pf_addr_setup(ruleset, &rule->src.addr, rule->af)) 1240 error = ENOMEM; 1241 if (pf_addr_setup(ruleset, &rule->dst.addr, rule->af)) 1242 error = ENOMEM; 1243 if (pf_anchor_setup(rule, ruleset, pr->anchor_call)) 1244 error = EINVAL; 1245 TAILQ_FOREACH(pa, &V_pf_pabuf, entries) 1246 if (pa->addr.type == PF_ADDR_TABLE) { 1247 pa->addr.p.tbl = pfr_attach_table(ruleset, 1248 pa->addr.v.tblname); 1249 if (pa->addr.p.tbl == NULL) 1250 error = ENOMEM; 1251 } 1252 1253 if (rule->overload_tblname[0]) { 1254 if ((rule->overload_tbl = pfr_attach_table(ruleset, 1255 rule->overload_tblname)) == NULL) 1256 error = EINVAL; 1257 else 1258 rule->overload_tbl->pfrkt_flags |= 1259 PFR_TFLAG_ACTIVE; 1260 } 1261 1262 pf_mv_pool(&V_pf_pabuf, &rule->rpool.list); 1263 if (((((rule->action == PF_NAT) || (rule->action == PF_RDR) || 1264 (rule->action == PF_BINAT)) && rule->anchor == NULL) || 1265 (rule->rt > PF_FASTROUTE)) && 1266 (TAILQ_FIRST(&rule->rpool.list) == NULL)) 1267 error = EINVAL; 1268 1269 if (error) { 1270 pf_free_rule(rule); 1271 PF_RULES_WUNLOCK(); 1272 break; 1273 } 1274 1275 rule->rpool.cur = TAILQ_FIRST(&rule->rpool.list); 1276 rule->evaluations = rule->packets[0] = rule->packets[1] = 1277 rule->bytes[0] = rule->bytes[1] = 0; 1278 TAILQ_INSERT_TAIL(ruleset->rules[rs_num].inactive.ptr, 1279 rule, entries); 1280 ruleset->rules[rs_num].inactive.rcount++; 1281 PF_RULES_WUNLOCK(); 1282 break; 1283 1284 #undef ERROUT 1285 DIOCADDRULE_error: 1286 PF_RULES_WUNLOCK(); 1287 counter_u64_free(rule->states_cur); 1288 counter_u64_free(rule->states_tot); 1289 counter_u64_free(rule->src_nodes); 1290 free(rule, M_PFRULE); 1291 if (kif) 1292 free(kif, PFI_MTYPE); 1293 break; 1294 } 1295 1296 case DIOCGETRULES: { 1297 struct pfioc_rule *pr = (struct pfioc_rule *)addr; 1298 struct pf_ruleset *ruleset; 1299 struct pf_rule *tail; 1300 int rs_num; 1301 1302 PF_RULES_WLOCK(); 1303 pr->anchor[sizeof(pr->anchor) - 1] = 0; 1304 ruleset = pf_find_ruleset(pr->anchor); 1305 if (ruleset == NULL) { 1306 PF_RULES_WUNLOCK(); 1307 error = EINVAL; 1308 break; 1309 } 1310 rs_num = pf_get_ruleset_number(pr->rule.action); 1311 if (rs_num >= PF_RULESET_MAX) { 1312 PF_RULES_WUNLOCK(); 1313 error = EINVAL; 1314 break; 1315 } 1316 tail = TAILQ_LAST(ruleset->rules[rs_num].active.ptr, 1317 pf_rulequeue); 1318 if (tail) 1319 pr->nr = tail->nr + 1; 1320 else 1321 pr->nr = 0; 1322 pr->ticket = ruleset->rules[rs_num].active.ticket; 1323 PF_RULES_WUNLOCK(); 1324 break; 1325 } 1326 1327 case DIOCGETRULE: { 1328 struct pfioc_rule *pr = (struct pfioc_rule *)addr; 1329 struct pf_ruleset *ruleset; 1330 struct pf_rule *rule; 1331 int rs_num, i; 1332 1333 PF_RULES_WLOCK(); 1334 pr->anchor[sizeof(pr->anchor) - 1] = 0; 1335 ruleset = pf_find_ruleset(pr->anchor); 1336 if (ruleset == NULL) { 1337 PF_RULES_WUNLOCK(); 1338 error = EINVAL; 1339 break; 1340 } 1341 rs_num = pf_get_ruleset_number(pr->rule.action); 1342 if (rs_num >= PF_RULESET_MAX) { 1343 PF_RULES_WUNLOCK(); 1344 error = EINVAL; 1345 break; 1346 } 1347 if (pr->ticket != ruleset->rules[rs_num].active.ticket) { 1348 PF_RULES_WUNLOCK(); 1349 error = EBUSY; 1350 break; 1351 } 1352 rule = TAILQ_FIRST(ruleset->rules[rs_num].active.ptr); 1353 while ((rule != NULL) && (rule->nr != pr->nr)) 1354 rule = TAILQ_NEXT(rule, entries); 1355 if (rule == NULL) { 1356 PF_RULES_WUNLOCK(); 1357 error = EBUSY; 1358 break; 1359 } 1360 bcopy(rule, &pr->rule, sizeof(struct pf_rule)); 1361 pr->rule.u_states_cur = counter_u64_fetch(rule->states_cur); 1362 pr->rule.u_states_tot = counter_u64_fetch(rule->states_tot); 1363 pr->rule.u_src_nodes = counter_u64_fetch(rule->src_nodes); 1364 if (pf_anchor_copyout(ruleset, rule, pr)) { 1365 PF_RULES_WUNLOCK(); 1366 error = EBUSY; 1367 break; 1368 } 1369 pf_addr_copyout(&pr->rule.src.addr); 1370 pf_addr_copyout(&pr->rule.dst.addr); 1371 for (i = 0; i < PF_SKIP_COUNT; ++i) 1372 if (rule->skip[i].ptr == NULL) 1373 pr->rule.skip[i].nr = -1; 1374 else 1375 pr->rule.skip[i].nr = 1376 rule->skip[i].ptr->nr; 1377 1378 if (pr->action == PF_GET_CLR_CNTR) { 1379 rule->evaluations = 0; 1380 rule->packets[0] = rule->packets[1] = 0; 1381 rule->bytes[0] = rule->bytes[1] = 0; 1382 counter_u64_zero(rule->states_tot); 1383 } 1384 PF_RULES_WUNLOCK(); 1385 break; 1386 } 1387 1388 case DIOCCHANGERULE: { 1389 struct pfioc_rule *pcr = (struct pfioc_rule *)addr; 1390 struct pf_ruleset *ruleset; 1391 struct pf_rule *oldrule = NULL, *newrule = NULL; 1392 struct pfi_kif *kif = NULL; 1393 struct pf_pooladdr *pa; 1394 u_int32_t nr = 0; 1395 int rs_num; 1396 1397 if (pcr->action < PF_CHANGE_ADD_HEAD || 1398 pcr->action > PF_CHANGE_GET_TICKET) { 1399 error = EINVAL; 1400 break; 1401 } 1402 if (pcr->rule.return_icmp >> 8 > ICMP_MAXTYPE) { 1403 error = EINVAL; 1404 break; 1405 } 1406 1407 if (pcr->action != PF_CHANGE_REMOVE) { 1408 #ifndef INET 1409 if (pcr->rule.af == AF_INET) { 1410 error = EAFNOSUPPORT; 1411 break; 1412 } 1413 #endif /* INET */ 1414 #ifndef INET6 1415 if (pcr->rule.af == AF_INET6) { 1416 error = EAFNOSUPPORT; 1417 break; 1418 } 1419 #endif /* INET6 */ 1420 newrule = malloc(sizeof(*newrule), M_PFRULE, M_WAITOK); 1421 bcopy(&pcr->rule, newrule, sizeof(struct pf_rule)); 1422 if (newrule->ifname[0]) 1423 kif = malloc(sizeof(*kif), PFI_MTYPE, M_WAITOK); 1424 newrule->states_cur = counter_u64_alloc(M_WAITOK); 1425 newrule->states_tot = counter_u64_alloc(M_WAITOK); 1426 newrule->src_nodes = counter_u64_alloc(M_WAITOK); 1427 newrule->cuid = td->td_ucred->cr_ruid; 1428 newrule->cpid = td->td_proc ? td->td_proc->p_pid : 0; 1429 TAILQ_INIT(&newrule->rpool.list); 1430 } 1431 1432 #define ERROUT(x) { error = (x); goto DIOCCHANGERULE_error; } 1433 1434 PF_RULES_WLOCK(); 1435 if (!(pcr->action == PF_CHANGE_REMOVE || 1436 pcr->action == PF_CHANGE_GET_TICKET) && 1437 pcr->pool_ticket != V_ticket_pabuf) 1438 ERROUT(EBUSY); 1439 1440 ruleset = pf_find_ruleset(pcr->anchor); 1441 if (ruleset == NULL) 1442 ERROUT(EINVAL); 1443 1444 rs_num = pf_get_ruleset_number(pcr->rule.action); 1445 if (rs_num >= PF_RULESET_MAX) 1446 ERROUT(EINVAL); 1447 1448 if (pcr->action == PF_CHANGE_GET_TICKET) { 1449 pcr->ticket = ++ruleset->rules[rs_num].active.ticket; 1450 ERROUT(0); 1451 } else if (pcr->ticket != 1452 ruleset->rules[rs_num].active.ticket) 1453 ERROUT(EINVAL); 1454 1455 if (pcr->action != PF_CHANGE_REMOVE) { 1456 if (newrule->ifname[0]) { 1457 newrule->kif = pfi_kif_attach(kif, 1458 newrule->ifname); 1459 pfi_kif_ref(newrule->kif); 1460 } else 1461 newrule->kif = NULL; 1462 1463 if (newrule->rtableid > 0 && 1464 newrule->rtableid >= rt_numfibs) 1465 error = EBUSY; 1466 1467 #ifdef ALTQ 1468 /* set queue IDs */ 1469 if (newrule->qname[0] != 0) { 1470 if ((newrule->qid = 1471 pf_qname2qid(newrule->qname)) == 0) 1472 error = EBUSY; 1473 else if (newrule->pqname[0] != 0) { 1474 if ((newrule->pqid = 1475 pf_qname2qid(newrule->pqname)) == 0) 1476 error = EBUSY; 1477 } else 1478 newrule->pqid = newrule->qid; 1479 } 1480 #endif /* ALTQ */ 1481 if (newrule->tagname[0]) 1482 if ((newrule->tag = 1483 pf_tagname2tag(newrule->tagname)) == 0) 1484 error = EBUSY; 1485 if (newrule->match_tagname[0]) 1486 if ((newrule->match_tag = pf_tagname2tag( 1487 newrule->match_tagname)) == 0) 1488 error = EBUSY; 1489 if (newrule->rt && !newrule->direction) 1490 error = EINVAL; 1491 if (!newrule->log) 1492 newrule->logif = 0; 1493 if (newrule->logif >= PFLOGIFS_MAX) 1494 error = EINVAL; 1495 if (pf_addr_setup(ruleset, &newrule->src.addr, newrule->af)) 1496 error = ENOMEM; 1497 if (pf_addr_setup(ruleset, &newrule->dst.addr, newrule->af)) 1498 error = ENOMEM; 1499 if (pf_anchor_setup(newrule, ruleset, pcr->anchor_call)) 1500 error = EINVAL; 1501 TAILQ_FOREACH(pa, &V_pf_pabuf, entries) 1502 if (pa->addr.type == PF_ADDR_TABLE) { 1503 pa->addr.p.tbl = 1504 pfr_attach_table(ruleset, 1505 pa->addr.v.tblname); 1506 if (pa->addr.p.tbl == NULL) 1507 error = ENOMEM; 1508 } 1509 1510 if (newrule->overload_tblname[0]) { 1511 if ((newrule->overload_tbl = pfr_attach_table( 1512 ruleset, newrule->overload_tblname)) == 1513 NULL) 1514 error = EINVAL; 1515 else 1516 newrule->overload_tbl->pfrkt_flags |= 1517 PFR_TFLAG_ACTIVE; 1518 } 1519 1520 pf_mv_pool(&V_pf_pabuf, &newrule->rpool.list); 1521 if (((((newrule->action == PF_NAT) || 1522 (newrule->action == PF_RDR) || 1523 (newrule->action == PF_BINAT) || 1524 (newrule->rt > PF_FASTROUTE)) && 1525 !newrule->anchor)) && 1526 (TAILQ_FIRST(&newrule->rpool.list) == NULL)) 1527 error = EINVAL; 1528 1529 if (error) { 1530 pf_free_rule(newrule); 1531 PF_RULES_WUNLOCK(); 1532 break; 1533 } 1534 1535 newrule->rpool.cur = TAILQ_FIRST(&newrule->rpool.list); 1536 newrule->evaluations = 0; 1537 newrule->packets[0] = newrule->packets[1] = 0; 1538 newrule->bytes[0] = newrule->bytes[1] = 0; 1539 } 1540 pf_empty_pool(&V_pf_pabuf); 1541 1542 if (pcr->action == PF_CHANGE_ADD_HEAD) 1543 oldrule = TAILQ_FIRST( 1544 ruleset->rules[rs_num].active.ptr); 1545 else if (pcr->action == PF_CHANGE_ADD_TAIL) 1546 oldrule = TAILQ_LAST( 1547 ruleset->rules[rs_num].active.ptr, pf_rulequeue); 1548 else { 1549 oldrule = TAILQ_FIRST( 1550 ruleset->rules[rs_num].active.ptr); 1551 while ((oldrule != NULL) && (oldrule->nr != pcr->nr)) 1552 oldrule = TAILQ_NEXT(oldrule, entries); 1553 if (oldrule == NULL) { 1554 if (newrule != NULL) 1555 pf_free_rule(newrule); 1556 PF_RULES_WUNLOCK(); 1557 error = EINVAL; 1558 break; 1559 } 1560 } 1561 1562 if (pcr->action == PF_CHANGE_REMOVE) { 1563 pf_unlink_rule(ruleset->rules[rs_num].active.ptr, 1564 oldrule); 1565 ruleset->rules[rs_num].active.rcount--; 1566 } else { 1567 if (oldrule == NULL) 1568 TAILQ_INSERT_TAIL( 1569 ruleset->rules[rs_num].active.ptr, 1570 newrule, entries); 1571 else if (pcr->action == PF_CHANGE_ADD_HEAD || 1572 pcr->action == PF_CHANGE_ADD_BEFORE) 1573 TAILQ_INSERT_BEFORE(oldrule, newrule, entries); 1574 else 1575 TAILQ_INSERT_AFTER( 1576 ruleset->rules[rs_num].active.ptr, 1577 oldrule, newrule, entries); 1578 ruleset->rules[rs_num].active.rcount++; 1579 } 1580 1581 nr = 0; 1582 TAILQ_FOREACH(oldrule, 1583 ruleset->rules[rs_num].active.ptr, entries) 1584 oldrule->nr = nr++; 1585 1586 ruleset->rules[rs_num].active.ticket++; 1587 1588 pf_calc_skip_steps(ruleset->rules[rs_num].active.ptr); 1589 pf_remove_if_empty_ruleset(ruleset); 1590 1591 PF_RULES_WUNLOCK(); 1592 break; 1593 1594 #undef ERROUT 1595 DIOCCHANGERULE_error: 1596 PF_RULES_WUNLOCK(); 1597 if (newrule != NULL) { 1598 counter_u64_free(newrule->states_cur); 1599 counter_u64_free(newrule->states_tot); 1600 counter_u64_free(newrule->src_nodes); 1601 free(newrule, M_PFRULE); 1602 } 1603 if (kif != NULL) 1604 free(kif, PFI_MTYPE); 1605 break; 1606 } 1607 1608 case DIOCCLRSTATES: { 1609 struct pf_state *s; 1610 struct pfioc_state_kill *psk = (struct pfioc_state_kill *)addr; 1611 u_int i, killed = 0; 1612 1613 for (i = 0; i <= pf_hashmask; i++) { 1614 struct pf_idhash *ih = &V_pf_idhash[i]; 1615 1616 relock_DIOCCLRSTATES: 1617 PF_HASHROW_LOCK(ih); 1618 LIST_FOREACH(s, &ih->states, entry) 1619 if (!psk->psk_ifname[0] || 1620 !strcmp(psk->psk_ifname, 1621 s->kif->pfik_name)) { 1622 /* 1623 * Don't send out individual 1624 * delete messages. 1625 */ 1626 s->state_flags |= PFSTATE_NOSYNC; 1627 pf_unlink_state(s, PF_ENTER_LOCKED); 1628 killed++; 1629 goto relock_DIOCCLRSTATES; 1630 } 1631 PF_HASHROW_UNLOCK(ih); 1632 } 1633 psk->psk_killed = killed; 1634 if (pfsync_clear_states_ptr != NULL) 1635 pfsync_clear_states_ptr(V_pf_status.hostid, psk->psk_ifname); 1636 break; 1637 } 1638 1639 case DIOCKILLSTATES: { 1640 struct pf_state *s; 1641 struct pf_state_key *sk; 1642 struct pf_addr *srcaddr, *dstaddr; 1643 u_int16_t srcport, dstport; 1644 struct pfioc_state_kill *psk = (struct pfioc_state_kill *)addr; 1645 u_int i, killed = 0; 1646 1647 if (psk->psk_pfcmp.id) { 1648 if (psk->psk_pfcmp.creatorid == 0) 1649 psk->psk_pfcmp.creatorid = V_pf_status.hostid; 1650 if ((s = pf_find_state_byid(psk->psk_pfcmp.id, 1651 psk->psk_pfcmp.creatorid))) { 1652 pf_unlink_state(s, PF_ENTER_LOCKED); 1653 psk->psk_killed = 1; 1654 } 1655 break; 1656 } 1657 1658 for (i = 0; i <= pf_hashmask; i++) { 1659 struct pf_idhash *ih = &V_pf_idhash[i]; 1660 1661 relock_DIOCKILLSTATES: 1662 PF_HASHROW_LOCK(ih); 1663 LIST_FOREACH(s, &ih->states, entry) { 1664 sk = s->key[PF_SK_WIRE]; 1665 if (s->direction == PF_OUT) { 1666 srcaddr = &sk->addr[1]; 1667 dstaddr = &sk->addr[0]; 1668 srcport = sk->port[0]; 1669 dstport = sk->port[0]; 1670 } else { 1671 srcaddr = &sk->addr[0]; 1672 dstaddr = &sk->addr[1]; 1673 srcport = sk->port[0]; 1674 dstport = sk->port[0]; 1675 } 1676 1677 if ((!psk->psk_af || sk->af == psk->psk_af) 1678 && (!psk->psk_proto || psk->psk_proto == 1679 sk->proto) && 1680 PF_MATCHA(psk->psk_src.neg, 1681 &psk->psk_src.addr.v.a.addr, 1682 &psk->psk_src.addr.v.a.mask, 1683 srcaddr, sk->af) && 1684 PF_MATCHA(psk->psk_dst.neg, 1685 &psk->psk_dst.addr.v.a.addr, 1686 &psk->psk_dst.addr.v.a.mask, 1687 dstaddr, sk->af) && 1688 (psk->psk_src.port_op == 0 || 1689 pf_match_port(psk->psk_src.port_op, 1690 psk->psk_src.port[0], psk->psk_src.port[1], 1691 srcport)) && 1692 (psk->psk_dst.port_op == 0 || 1693 pf_match_port(psk->psk_dst.port_op, 1694 psk->psk_dst.port[0], psk->psk_dst.port[1], 1695 dstport)) && 1696 (!psk->psk_label[0] || 1697 (s->rule.ptr->label[0] && 1698 !strcmp(psk->psk_label, 1699 s->rule.ptr->label))) && 1700 (!psk->psk_ifname[0] || 1701 !strcmp(psk->psk_ifname, 1702 s->kif->pfik_name))) { 1703 pf_unlink_state(s, PF_ENTER_LOCKED); 1704 killed++; 1705 goto relock_DIOCKILLSTATES; 1706 } 1707 } 1708 PF_HASHROW_UNLOCK(ih); 1709 } 1710 psk->psk_killed = killed; 1711 break; 1712 } 1713 1714 case DIOCADDSTATE: { 1715 struct pfioc_state *ps = (struct pfioc_state *)addr; 1716 struct pfsync_state *sp = &ps->state; 1717 1718 if (sp->timeout >= PFTM_MAX) { 1719 error = EINVAL; 1720 break; 1721 } 1722 if (pfsync_state_import_ptr != NULL) { 1723 PF_RULES_RLOCK(); 1724 error = pfsync_state_import_ptr(sp, PFSYNC_SI_IOCTL); 1725 PF_RULES_RUNLOCK(); 1726 } else 1727 error = EOPNOTSUPP; 1728 break; 1729 } 1730 1731 case DIOCGETSTATE: { 1732 struct pfioc_state *ps = (struct pfioc_state *)addr; 1733 struct pf_state *s; 1734 1735 s = pf_find_state_byid(ps->state.id, ps->state.creatorid); 1736 if (s == NULL) { 1737 error = ENOENT; 1738 break; 1739 } 1740 1741 pfsync_state_export(&ps->state, s); 1742 PF_STATE_UNLOCK(s); 1743 break; 1744 } 1745 1746 case DIOCGETSTATES: { 1747 struct pfioc_states *ps = (struct pfioc_states *)addr; 1748 struct pf_state *s; 1749 struct pfsync_state *pstore, *p; 1750 int i, nr; 1751 1752 if (ps->ps_len == 0) { 1753 nr = uma_zone_get_cur(V_pf_state_z); 1754 ps->ps_len = sizeof(struct pfsync_state) * nr; 1755 break; 1756 } 1757 1758 p = pstore = malloc(ps->ps_len, M_TEMP, M_WAITOK); 1759 nr = 0; 1760 1761 for (i = 0; i <= pf_hashmask; i++) { 1762 struct pf_idhash *ih = &V_pf_idhash[i]; 1763 1764 PF_HASHROW_LOCK(ih); 1765 LIST_FOREACH(s, &ih->states, entry) { 1766 1767 if (s->timeout == PFTM_UNLINKED) 1768 continue; 1769 1770 if ((nr+1) * sizeof(*p) > ps->ps_len) { 1771 PF_HASHROW_UNLOCK(ih); 1772 goto DIOCGETSTATES_full; 1773 } 1774 pfsync_state_export(p, s); 1775 p++; 1776 nr++; 1777 } 1778 PF_HASHROW_UNLOCK(ih); 1779 } 1780 DIOCGETSTATES_full: 1781 error = copyout(pstore, ps->ps_states, 1782 sizeof(struct pfsync_state) * nr); 1783 if (error) { 1784 free(pstore, M_TEMP); 1785 break; 1786 } 1787 ps->ps_len = sizeof(struct pfsync_state) * nr; 1788 free(pstore, M_TEMP); 1789 1790 break; 1791 } 1792 1793 case DIOCGETSTATUS: { 1794 struct pf_status *s = (struct pf_status *)addr; 1795 1796 PF_RULES_RLOCK(); 1797 s->running = V_pf_status.running; 1798 s->since = V_pf_status.since; 1799 s->debug = V_pf_status.debug; 1800 s->hostid = V_pf_status.hostid; 1801 s->states = V_pf_status.states; 1802 s->src_nodes = V_pf_status.src_nodes; 1803 1804 for (int i = 0; i < PFRES_MAX; i++) 1805 s->counters[i] = 1806 counter_u64_fetch(V_pf_status.counters[i]); 1807 for (int i = 0; i < LCNT_MAX; i++) 1808 s->lcounters[i] = 1809 counter_u64_fetch(V_pf_status.lcounters[i]); 1810 for (int i = 0; i < FCNT_MAX; i++) 1811 s->fcounters[i] = 1812 counter_u64_fetch(V_pf_status.fcounters[i]); 1813 for (int i = 0; i < SCNT_MAX; i++) 1814 s->scounters[i] = 1815 counter_u64_fetch(V_pf_status.scounters[i]); 1816 1817 bcopy(V_pf_status.ifname, s->ifname, IFNAMSIZ); 1818 bcopy(V_pf_status.pf_chksum, s->pf_chksum, 1819 PF_MD5_DIGEST_LENGTH); 1820 1821 pfi_update_status(s->ifname, s); 1822 PF_RULES_RUNLOCK(); 1823 break; 1824 } 1825 1826 case DIOCSETSTATUSIF: { 1827 struct pfioc_if *pi = (struct pfioc_if *)addr; 1828 1829 if (pi->ifname[0] == 0) { 1830 bzero(V_pf_status.ifname, IFNAMSIZ); 1831 break; 1832 } 1833 PF_RULES_WLOCK(); 1834 strlcpy(V_pf_status.ifname, pi->ifname, IFNAMSIZ); 1835 PF_RULES_WUNLOCK(); 1836 break; 1837 } 1838 1839 case DIOCCLRSTATUS: { 1840 PF_RULES_WLOCK(); 1841 for (int i = 0; i < PFRES_MAX; i++) 1842 counter_u64_zero(V_pf_status.counters[i]); 1843 for (int i = 0; i < FCNT_MAX; i++) 1844 counter_u64_zero(V_pf_status.fcounters[i]); 1845 for (int i = 0; i < SCNT_MAX; i++) 1846 counter_u64_zero(V_pf_status.scounters[i]); 1847 V_pf_status.since = time_second; 1848 if (*V_pf_status.ifname) 1849 pfi_update_status(V_pf_status.ifname, NULL); 1850 PF_RULES_WUNLOCK(); 1851 break; 1852 } 1853 1854 case DIOCNATLOOK: { 1855 struct pfioc_natlook *pnl = (struct pfioc_natlook *)addr; 1856 struct pf_state_key *sk; 1857 struct pf_state *state; 1858 struct pf_state_key_cmp key; 1859 int m = 0, direction = pnl->direction; 1860 int sidx, didx; 1861 1862 /* NATLOOK src and dst are reversed, so reverse sidx/didx */ 1863 sidx = (direction == PF_IN) ? 1 : 0; 1864 didx = (direction == PF_IN) ? 0 : 1; 1865 1866 if (!pnl->proto || 1867 PF_AZERO(&pnl->saddr, pnl->af) || 1868 PF_AZERO(&pnl->daddr, pnl->af) || 1869 ((pnl->proto == IPPROTO_TCP || 1870 pnl->proto == IPPROTO_UDP) && 1871 (!pnl->dport || !pnl->sport))) 1872 error = EINVAL; 1873 else { 1874 bzero(&key, sizeof(key)); 1875 key.af = pnl->af; 1876 key.proto = pnl->proto; 1877 PF_ACPY(&key.addr[sidx], &pnl->saddr, pnl->af); 1878 key.port[sidx] = pnl->sport; 1879 PF_ACPY(&key.addr[didx], &pnl->daddr, pnl->af); 1880 key.port[didx] = pnl->dport; 1881 1882 state = pf_find_state_all(&key, direction, &m); 1883 1884 if (m > 1) 1885 error = E2BIG; /* more than one state */ 1886 else if (state != NULL) { 1887 /* XXXGL: not locked read */ 1888 sk = state->key[sidx]; 1889 PF_ACPY(&pnl->rsaddr, &sk->addr[sidx], sk->af); 1890 pnl->rsport = sk->port[sidx]; 1891 PF_ACPY(&pnl->rdaddr, &sk->addr[didx], sk->af); 1892 pnl->rdport = sk->port[didx]; 1893 } else 1894 error = ENOENT; 1895 } 1896 break; 1897 } 1898 1899 case DIOCSETTIMEOUT: { 1900 struct pfioc_tm *pt = (struct pfioc_tm *)addr; 1901 int old; 1902 1903 if (pt->timeout < 0 || pt->timeout >= PFTM_MAX || 1904 pt->seconds < 0) { 1905 error = EINVAL; 1906 break; 1907 } 1908 PF_RULES_WLOCK(); 1909 old = V_pf_default_rule.timeout[pt->timeout]; 1910 if (pt->timeout == PFTM_INTERVAL && pt->seconds == 0) 1911 pt->seconds = 1; 1912 V_pf_default_rule.timeout[pt->timeout] = pt->seconds; 1913 if (pt->timeout == PFTM_INTERVAL && pt->seconds < old) 1914 wakeup(pf_purge_thread); 1915 pt->seconds = old; 1916 PF_RULES_WUNLOCK(); 1917 break; 1918 } 1919 1920 case DIOCGETTIMEOUT: { 1921 struct pfioc_tm *pt = (struct pfioc_tm *)addr; 1922 1923 if (pt->timeout < 0 || pt->timeout >= PFTM_MAX) { 1924 error = EINVAL; 1925 break; 1926 } 1927 PF_RULES_RLOCK(); 1928 pt->seconds = V_pf_default_rule.timeout[pt->timeout]; 1929 PF_RULES_RUNLOCK(); 1930 break; 1931 } 1932 1933 case DIOCGETLIMIT: { 1934 struct pfioc_limit *pl = (struct pfioc_limit *)addr; 1935 1936 if (pl->index < 0 || pl->index >= PF_LIMIT_MAX) { 1937 error = EINVAL; 1938 break; 1939 } 1940 PF_RULES_RLOCK(); 1941 pl->limit = V_pf_limits[pl->index].limit; 1942 PF_RULES_RUNLOCK(); 1943 break; 1944 } 1945 1946 case DIOCSETLIMIT: { 1947 struct pfioc_limit *pl = (struct pfioc_limit *)addr; 1948 int old_limit; 1949 1950 PF_RULES_WLOCK(); 1951 if (pl->index < 0 || pl->index >= PF_LIMIT_MAX || 1952 V_pf_limits[pl->index].zone == NULL) { 1953 PF_RULES_WUNLOCK(); 1954 error = EINVAL; 1955 break; 1956 } 1957 uma_zone_set_max(V_pf_limits[pl->index].zone, pl->limit); 1958 old_limit = V_pf_limits[pl->index].limit; 1959 V_pf_limits[pl->index].limit = pl->limit; 1960 pl->limit = old_limit; 1961 PF_RULES_WUNLOCK(); 1962 break; 1963 } 1964 1965 case DIOCSETDEBUG: { 1966 u_int32_t *level = (u_int32_t *)addr; 1967 1968 PF_RULES_WLOCK(); 1969 V_pf_status.debug = *level; 1970 PF_RULES_WUNLOCK(); 1971 break; 1972 } 1973 1974 case DIOCCLRRULECTRS: { 1975 /* obsoleted by DIOCGETRULE with action=PF_GET_CLR_CNTR */ 1976 struct pf_ruleset *ruleset = &pf_main_ruleset; 1977 struct pf_rule *rule; 1978 1979 PF_RULES_WLOCK(); 1980 TAILQ_FOREACH(rule, 1981 ruleset->rules[PF_RULESET_FILTER].active.ptr, entries) { 1982 rule->evaluations = 0; 1983 rule->packets[0] = rule->packets[1] = 0; 1984 rule->bytes[0] = rule->bytes[1] = 0; 1985 } 1986 PF_RULES_WUNLOCK(); 1987 break; 1988 } 1989 1990 case DIOCGIFSPEED: { 1991 struct pf_ifspeed *psp = (struct pf_ifspeed *)addr; 1992 struct pf_ifspeed ps; 1993 struct ifnet *ifp; 1994 1995 if (psp->ifname[0] != 0) { 1996 /* Can we completely trust user-land? */ 1997 strlcpy(ps.ifname, psp->ifname, IFNAMSIZ); 1998 ifp = ifunit(ps.ifname); 1999 if (ifp != NULL) 2000 psp->baudrate = ifp->if_baudrate; 2001 else 2002 error = EINVAL; 2003 } else 2004 error = EINVAL; 2005 break; 2006 } 2007 2008 #ifdef ALTQ 2009 case DIOCSTARTALTQ: { 2010 struct pf_altq *altq; 2011 2012 PF_RULES_WLOCK(); 2013 /* enable all altq interfaces on active list */ 2014 TAILQ_FOREACH(altq, V_pf_altqs_active, entries) { 2015 if (altq->qname[0] == 0 && (altq->local_flags & 2016 PFALTQ_FLAG_IF_REMOVED) == 0) { 2017 error = pf_enable_altq(altq); 2018 if (error != 0) 2019 break; 2020 } 2021 } 2022 if (error == 0) 2023 V_pf_altq_running = 1; 2024 PF_RULES_WUNLOCK(); 2025 DPFPRINTF(PF_DEBUG_MISC, ("altq: started\n")); 2026 break; 2027 } 2028 2029 case DIOCSTOPALTQ: { 2030 struct pf_altq *altq; 2031 2032 PF_RULES_WLOCK(); 2033 /* disable all altq interfaces on active list */ 2034 TAILQ_FOREACH(altq, V_pf_altqs_active, entries) { 2035 if (altq->qname[0] == 0 && (altq->local_flags & 2036 PFALTQ_FLAG_IF_REMOVED) == 0) { 2037 error = pf_disable_altq(altq); 2038 if (error != 0) 2039 break; 2040 } 2041 } 2042 if (error == 0) 2043 V_pf_altq_running = 0; 2044 PF_RULES_WUNLOCK(); 2045 DPFPRINTF(PF_DEBUG_MISC, ("altq: stopped\n")); 2046 break; 2047 } 2048 2049 case DIOCADDALTQ: { 2050 struct pfioc_altq *pa = (struct pfioc_altq *)addr; 2051 struct pf_altq *altq, *a; 2052 struct ifnet *ifp; 2053 2054 altq = malloc(sizeof(*altq), M_PFALTQ, M_WAITOK); 2055 bcopy(&pa->altq, altq, sizeof(struct pf_altq)); 2056 altq->local_flags = 0; 2057 2058 PF_RULES_WLOCK(); 2059 if (pa->ticket != V_ticket_altqs_inactive) { 2060 PF_RULES_WUNLOCK(); 2061 free(altq, M_PFALTQ); 2062 error = EBUSY; 2063 break; 2064 } 2065 2066 /* 2067 * if this is for a queue, find the discipline and 2068 * copy the necessary fields 2069 */ 2070 if (altq->qname[0] != 0) { 2071 if ((altq->qid = pf_qname2qid(altq->qname)) == 0) { 2072 PF_RULES_WUNLOCK(); 2073 error = EBUSY; 2074 free(altq, M_PFALTQ); 2075 break; 2076 } 2077 altq->altq_disc = NULL; 2078 TAILQ_FOREACH(a, V_pf_altqs_inactive, entries) { 2079 if (strncmp(a->ifname, altq->ifname, 2080 IFNAMSIZ) == 0 && a->qname[0] == 0) { 2081 altq->altq_disc = a->altq_disc; 2082 break; 2083 } 2084 } 2085 } 2086 2087 if ((ifp = ifunit(altq->ifname)) == NULL) 2088 altq->local_flags |= PFALTQ_FLAG_IF_REMOVED; 2089 else 2090 error = altq_add(altq); 2091 2092 if (error) { 2093 PF_RULES_WUNLOCK(); 2094 free(altq, M_PFALTQ); 2095 break; 2096 } 2097 2098 TAILQ_INSERT_TAIL(V_pf_altqs_inactive, altq, entries); 2099 bcopy(altq, &pa->altq, sizeof(struct pf_altq)); 2100 PF_RULES_WUNLOCK(); 2101 break; 2102 } 2103 2104 case DIOCGETALTQS: { 2105 struct pfioc_altq *pa = (struct pfioc_altq *)addr; 2106 struct pf_altq *altq; 2107 2108 PF_RULES_RLOCK(); 2109 pa->nr = 0; 2110 TAILQ_FOREACH(altq, V_pf_altqs_active, entries) 2111 pa->nr++; 2112 pa->ticket = V_ticket_altqs_active; 2113 PF_RULES_RUNLOCK(); 2114 break; 2115 } 2116 2117 case DIOCGETALTQ: { 2118 struct pfioc_altq *pa = (struct pfioc_altq *)addr; 2119 struct pf_altq *altq; 2120 u_int32_t nr; 2121 2122 PF_RULES_RLOCK(); 2123 if (pa->ticket != V_ticket_altqs_active) { 2124 PF_RULES_RUNLOCK(); 2125 error = EBUSY; 2126 break; 2127 } 2128 nr = 0; 2129 altq = TAILQ_FIRST(V_pf_altqs_active); 2130 while ((altq != NULL) && (nr < pa->nr)) { 2131 altq = TAILQ_NEXT(altq, entries); 2132 nr++; 2133 } 2134 if (altq == NULL) { 2135 PF_RULES_RUNLOCK(); 2136 error = EBUSY; 2137 break; 2138 } 2139 bcopy(altq, &pa->altq, sizeof(struct pf_altq)); 2140 PF_RULES_RUNLOCK(); 2141 break; 2142 } 2143 2144 case DIOCCHANGEALTQ: 2145 /* CHANGEALTQ not supported yet! */ 2146 error = ENODEV; 2147 break; 2148 2149 case DIOCGETQSTATS: { 2150 struct pfioc_qstats *pq = (struct pfioc_qstats *)addr; 2151 struct pf_altq *altq; 2152 u_int32_t nr; 2153 int nbytes; 2154 2155 PF_RULES_RLOCK(); 2156 if (pq->ticket != V_ticket_altqs_active) { 2157 PF_RULES_RUNLOCK(); 2158 error = EBUSY; 2159 break; 2160 } 2161 nbytes = pq->nbytes; 2162 nr = 0; 2163 altq = TAILQ_FIRST(V_pf_altqs_active); 2164 while ((altq != NULL) && (nr < pq->nr)) { 2165 altq = TAILQ_NEXT(altq, entries); 2166 nr++; 2167 } 2168 if (altq == NULL) { 2169 PF_RULES_RUNLOCK(); 2170 error = EBUSY; 2171 break; 2172 } 2173 2174 if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) != 0) { 2175 PF_RULES_RUNLOCK(); 2176 error = ENXIO; 2177 break; 2178 } 2179 PF_RULES_RUNLOCK(); 2180 error = altq_getqstats(altq, pq->buf, &nbytes); 2181 if (error == 0) { 2182 pq->scheduler = altq->scheduler; 2183 pq->nbytes = nbytes; 2184 } 2185 break; 2186 } 2187 #endif /* ALTQ */ 2188 2189 case DIOCBEGINADDRS: { 2190 struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr; 2191 2192 PF_RULES_WLOCK(); 2193 pf_empty_pool(&V_pf_pabuf); 2194 pp->ticket = ++V_ticket_pabuf; 2195 PF_RULES_WUNLOCK(); 2196 break; 2197 } 2198 2199 case DIOCADDADDR: { 2200 struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr; 2201 struct pf_pooladdr *pa; 2202 struct pfi_kif *kif = NULL; 2203 2204 #ifndef INET 2205 if (pp->af == AF_INET) { 2206 error = EAFNOSUPPORT; 2207 break; 2208 } 2209 #endif /* INET */ 2210 #ifndef INET6 2211 if (pp->af == AF_INET6) { 2212 error = EAFNOSUPPORT; 2213 break; 2214 } 2215 #endif /* INET6 */ 2216 if (pp->addr.addr.type != PF_ADDR_ADDRMASK && 2217 pp->addr.addr.type != PF_ADDR_DYNIFTL && 2218 pp->addr.addr.type != PF_ADDR_TABLE) { 2219 error = EINVAL; 2220 break; 2221 } 2222 pa = malloc(sizeof(*pa), M_PFRULE, M_WAITOK); 2223 bcopy(&pp->addr, pa, sizeof(struct pf_pooladdr)); 2224 if (pa->ifname[0]) 2225 kif = malloc(sizeof(*kif), PFI_MTYPE, M_WAITOK); 2226 PF_RULES_WLOCK(); 2227 if (pp->ticket != V_ticket_pabuf) { 2228 PF_RULES_WUNLOCK(); 2229 if (pa->ifname[0]) 2230 free(kif, PFI_MTYPE); 2231 free(pa, M_PFRULE); 2232 error = EBUSY; 2233 break; 2234 } 2235 if (pa->ifname[0]) { 2236 pa->kif = pfi_kif_attach(kif, pa->ifname); 2237 pfi_kif_ref(pa->kif); 2238 } else 2239 pa->kif = NULL; 2240 if (pa->addr.type == PF_ADDR_DYNIFTL && ((error = 2241 pfi_dynaddr_setup(&pa->addr, pp->af)) != 0)) { 2242 if (pa->ifname[0]) 2243 pfi_kif_unref(pa->kif); 2244 PF_RULES_WUNLOCK(); 2245 free(pa, M_PFRULE); 2246 break; 2247 } 2248 TAILQ_INSERT_TAIL(&V_pf_pabuf, pa, entries); 2249 PF_RULES_WUNLOCK(); 2250 break; 2251 } 2252 2253 case DIOCGETADDRS: { 2254 struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr; 2255 struct pf_pool *pool; 2256 struct pf_pooladdr *pa; 2257 2258 PF_RULES_RLOCK(); 2259 pp->nr = 0; 2260 pool = pf_get_pool(pp->anchor, pp->ticket, pp->r_action, 2261 pp->r_num, 0, 1, 0); 2262 if (pool == NULL) { 2263 PF_RULES_RUNLOCK(); 2264 error = EBUSY; 2265 break; 2266 } 2267 TAILQ_FOREACH(pa, &pool->list, entries) 2268 pp->nr++; 2269 PF_RULES_RUNLOCK(); 2270 break; 2271 } 2272 2273 case DIOCGETADDR: { 2274 struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr; 2275 struct pf_pool *pool; 2276 struct pf_pooladdr *pa; 2277 u_int32_t nr = 0; 2278 2279 PF_RULES_RLOCK(); 2280 pool = pf_get_pool(pp->anchor, pp->ticket, pp->r_action, 2281 pp->r_num, 0, 1, 1); 2282 if (pool == NULL) { 2283 PF_RULES_RUNLOCK(); 2284 error = EBUSY; 2285 break; 2286 } 2287 pa = TAILQ_FIRST(&pool->list); 2288 while ((pa != NULL) && (nr < pp->nr)) { 2289 pa = TAILQ_NEXT(pa, entries); 2290 nr++; 2291 } 2292 if (pa == NULL) { 2293 PF_RULES_RUNLOCK(); 2294 error = EBUSY; 2295 break; 2296 } 2297 bcopy(pa, &pp->addr, sizeof(struct pf_pooladdr)); 2298 pf_addr_copyout(&pp->addr.addr); 2299 PF_RULES_RUNLOCK(); 2300 break; 2301 } 2302 2303 case DIOCCHANGEADDR: { 2304 struct pfioc_pooladdr *pca = (struct pfioc_pooladdr *)addr; 2305 struct pf_pool *pool; 2306 struct pf_pooladdr *oldpa = NULL, *newpa = NULL; 2307 struct pf_ruleset *ruleset; 2308 struct pfi_kif *kif = NULL; 2309 2310 if (pca->action < PF_CHANGE_ADD_HEAD || 2311 pca->action > PF_CHANGE_REMOVE) { 2312 error = EINVAL; 2313 break; 2314 } 2315 if (pca->addr.addr.type != PF_ADDR_ADDRMASK && 2316 pca->addr.addr.type != PF_ADDR_DYNIFTL && 2317 pca->addr.addr.type != PF_ADDR_TABLE) { 2318 error = EINVAL; 2319 break; 2320 } 2321 2322 if (pca->action != PF_CHANGE_REMOVE) { 2323 #ifndef INET 2324 if (pca->af == AF_INET) { 2325 error = EAFNOSUPPORT; 2326 break; 2327 } 2328 #endif /* INET */ 2329 #ifndef INET6 2330 if (pca->af == AF_INET6) { 2331 error = EAFNOSUPPORT; 2332 break; 2333 } 2334 #endif /* INET6 */ 2335 newpa = malloc(sizeof(*newpa), M_PFRULE, M_WAITOK); 2336 bcopy(&pca->addr, newpa, sizeof(struct pf_pooladdr)); 2337 if (newpa->ifname[0]) 2338 kif = malloc(sizeof(*kif), PFI_MTYPE, M_WAITOK); 2339 newpa->kif = NULL; 2340 } 2341 2342 #define ERROUT(x) { error = (x); goto DIOCCHANGEADDR_error; } 2343 PF_RULES_WLOCK(); 2344 ruleset = pf_find_ruleset(pca->anchor); 2345 if (ruleset == NULL) 2346 ERROUT(EBUSY); 2347 2348 pool = pf_get_pool(pca->anchor, pca->ticket, pca->r_action, 2349 pca->r_num, pca->r_last, 1, 1); 2350 if (pool == NULL) 2351 ERROUT(EBUSY); 2352 2353 if (pca->action != PF_CHANGE_REMOVE) { 2354 if (newpa->ifname[0]) { 2355 newpa->kif = pfi_kif_attach(kif, newpa->ifname); 2356 pfi_kif_ref(newpa->kif); 2357 kif = NULL; 2358 } 2359 2360 switch (newpa->addr.type) { 2361 case PF_ADDR_DYNIFTL: 2362 error = pfi_dynaddr_setup(&newpa->addr, 2363 pca->af); 2364 break; 2365 case PF_ADDR_TABLE: 2366 newpa->addr.p.tbl = pfr_attach_table(ruleset, 2367 newpa->addr.v.tblname); 2368 if (newpa->addr.p.tbl == NULL) 2369 error = ENOMEM; 2370 break; 2371 } 2372 if (error) 2373 goto DIOCCHANGEADDR_error; 2374 } 2375 2376 switch (pca->action) { 2377 case PF_CHANGE_ADD_HEAD: 2378 oldpa = TAILQ_FIRST(&pool->list); 2379 break; 2380 case PF_CHANGE_ADD_TAIL: 2381 oldpa = TAILQ_LAST(&pool->list, pf_palist); 2382 break; 2383 default: 2384 oldpa = TAILQ_FIRST(&pool->list); 2385 for (int i = 0; oldpa && i < pca->nr; i++) 2386 oldpa = TAILQ_NEXT(oldpa, entries); 2387 2388 if (oldpa == NULL) 2389 ERROUT(EINVAL); 2390 } 2391 2392 if (pca->action == PF_CHANGE_REMOVE) { 2393 TAILQ_REMOVE(&pool->list, oldpa, entries); 2394 switch (oldpa->addr.type) { 2395 case PF_ADDR_DYNIFTL: 2396 pfi_dynaddr_remove(oldpa->addr.p.dyn); 2397 break; 2398 case PF_ADDR_TABLE: 2399 pfr_detach_table(oldpa->addr.p.tbl); 2400 break; 2401 } 2402 if (oldpa->kif) 2403 pfi_kif_unref(oldpa->kif); 2404 free(oldpa, M_PFRULE); 2405 } else { 2406 if (oldpa == NULL) 2407 TAILQ_INSERT_TAIL(&pool->list, newpa, entries); 2408 else if (pca->action == PF_CHANGE_ADD_HEAD || 2409 pca->action == PF_CHANGE_ADD_BEFORE) 2410 TAILQ_INSERT_BEFORE(oldpa, newpa, entries); 2411 else 2412 TAILQ_INSERT_AFTER(&pool->list, oldpa, 2413 newpa, entries); 2414 } 2415 2416 pool->cur = TAILQ_FIRST(&pool->list); 2417 PF_ACPY(&pool->counter, &pool->cur->addr.v.a.addr, pca->af); 2418 PF_RULES_WUNLOCK(); 2419 break; 2420 2421 #undef ERROUT 2422 DIOCCHANGEADDR_error: 2423 if (newpa->kif) 2424 pfi_kif_unref(newpa->kif); 2425 PF_RULES_WUNLOCK(); 2426 if (newpa != NULL) 2427 free(newpa, M_PFRULE); 2428 if (kif != NULL) 2429 free(kif, PFI_MTYPE); 2430 break; 2431 } 2432 2433 case DIOCGETRULESETS: { 2434 struct pfioc_ruleset *pr = (struct pfioc_ruleset *)addr; 2435 struct pf_ruleset *ruleset; 2436 struct pf_anchor *anchor; 2437 2438 PF_RULES_RLOCK(); 2439 pr->path[sizeof(pr->path) - 1] = 0; 2440 if ((ruleset = pf_find_ruleset(pr->path)) == NULL) { 2441 PF_RULES_RUNLOCK(); 2442 error = ENOENT; 2443 break; 2444 } 2445 pr->nr = 0; 2446 if (ruleset->anchor == NULL) { 2447 /* XXX kludge for pf_main_ruleset */ 2448 RB_FOREACH(anchor, pf_anchor_global, &V_pf_anchors) 2449 if (anchor->parent == NULL) 2450 pr->nr++; 2451 } else { 2452 RB_FOREACH(anchor, pf_anchor_node, 2453 &ruleset->anchor->children) 2454 pr->nr++; 2455 } 2456 PF_RULES_RUNLOCK(); 2457 break; 2458 } 2459 2460 case DIOCGETRULESET: { 2461 struct pfioc_ruleset *pr = (struct pfioc_ruleset *)addr; 2462 struct pf_ruleset *ruleset; 2463 struct pf_anchor *anchor; 2464 u_int32_t nr = 0; 2465 2466 PF_RULES_RLOCK(); 2467 pr->path[sizeof(pr->path) - 1] = 0; 2468 if ((ruleset = pf_find_ruleset(pr->path)) == NULL) { 2469 PF_RULES_RUNLOCK(); 2470 error = ENOENT; 2471 break; 2472 } 2473 pr->name[0] = 0; 2474 if (ruleset->anchor == NULL) { 2475 /* XXX kludge for pf_main_ruleset */ 2476 RB_FOREACH(anchor, pf_anchor_global, &V_pf_anchors) 2477 if (anchor->parent == NULL && nr++ == pr->nr) { 2478 strlcpy(pr->name, anchor->name, 2479 sizeof(pr->name)); 2480 break; 2481 } 2482 } else { 2483 RB_FOREACH(anchor, pf_anchor_node, 2484 &ruleset->anchor->children) 2485 if (nr++ == pr->nr) { 2486 strlcpy(pr->name, anchor->name, 2487 sizeof(pr->name)); 2488 break; 2489 } 2490 } 2491 if (!pr->name[0]) 2492 error = EBUSY; 2493 PF_RULES_RUNLOCK(); 2494 break; 2495 } 2496 2497 case DIOCRCLRTABLES: { 2498 struct pfioc_table *io = (struct pfioc_table *)addr; 2499 2500 if (io->pfrio_esize != 0) { 2501 error = ENODEV; 2502 break; 2503 } 2504 PF_RULES_WLOCK(); 2505 error = pfr_clr_tables(&io->pfrio_table, &io->pfrio_ndel, 2506 io->pfrio_flags | PFR_FLAG_USERIOCTL); 2507 PF_RULES_WUNLOCK(); 2508 break; 2509 } 2510 2511 case DIOCRADDTABLES: { 2512 struct pfioc_table *io = (struct pfioc_table *)addr; 2513 struct pfr_table *pfrts; 2514 size_t totlen; 2515 2516 if (io->pfrio_esize != sizeof(struct pfr_table)) { 2517 error = ENODEV; 2518 break; 2519 } 2520 totlen = io->pfrio_size * sizeof(struct pfr_table); 2521 pfrts = malloc(totlen, M_TEMP, M_WAITOK); 2522 error = copyin(io->pfrio_buffer, pfrts, totlen); 2523 if (error) { 2524 free(pfrts, M_TEMP); 2525 break; 2526 } 2527 PF_RULES_WLOCK(); 2528 error = pfr_add_tables(pfrts, io->pfrio_size, 2529 &io->pfrio_nadd, io->pfrio_flags | PFR_FLAG_USERIOCTL); 2530 PF_RULES_WUNLOCK(); 2531 free(pfrts, M_TEMP); 2532 break; 2533 } 2534 2535 case DIOCRDELTABLES: { 2536 struct pfioc_table *io = (struct pfioc_table *)addr; 2537 struct pfr_table *pfrts; 2538 size_t totlen; 2539 2540 if (io->pfrio_esize != sizeof(struct pfr_table)) { 2541 error = ENODEV; 2542 break; 2543 } 2544 totlen = io->pfrio_size * sizeof(struct pfr_table); 2545 pfrts = malloc(totlen, M_TEMP, M_WAITOK); 2546 error = copyin(io->pfrio_buffer, pfrts, totlen); 2547 if (error) { 2548 free(pfrts, M_TEMP); 2549 break; 2550 } 2551 PF_RULES_WLOCK(); 2552 error = pfr_del_tables(pfrts, io->pfrio_size, 2553 &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL); 2554 PF_RULES_WUNLOCK(); 2555 free(pfrts, M_TEMP); 2556 break; 2557 } 2558 2559 case DIOCRGETTABLES: { 2560 struct pfioc_table *io = (struct pfioc_table *)addr; 2561 struct pfr_table *pfrts; 2562 size_t totlen; 2563 2564 if (io->pfrio_esize != sizeof(struct pfr_table)) { 2565 error = ENODEV; 2566 break; 2567 } 2568 totlen = io->pfrio_size * sizeof(struct pfr_table); 2569 pfrts = malloc(totlen, M_TEMP, M_WAITOK); 2570 PF_RULES_RLOCK(); 2571 error = pfr_get_tables(&io->pfrio_table, pfrts, 2572 &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL); 2573 PF_RULES_RUNLOCK(); 2574 if (error == 0) 2575 error = copyout(pfrts, io->pfrio_buffer, totlen); 2576 free(pfrts, M_TEMP); 2577 break; 2578 } 2579 2580 case DIOCRGETTSTATS: { 2581 struct pfioc_table *io = (struct pfioc_table *)addr; 2582 struct pfr_tstats *pfrtstats; 2583 size_t totlen; 2584 2585 if (io->pfrio_esize != sizeof(struct pfr_tstats)) { 2586 error = ENODEV; 2587 break; 2588 } 2589 totlen = io->pfrio_size * sizeof(struct pfr_tstats); 2590 pfrtstats = malloc(totlen, M_TEMP, M_WAITOK); 2591 PF_RULES_WLOCK(); 2592 error = pfr_get_tstats(&io->pfrio_table, pfrtstats, 2593 &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL); 2594 PF_RULES_WUNLOCK(); 2595 if (error == 0) 2596 error = copyout(pfrtstats, io->pfrio_buffer, totlen); 2597 free(pfrtstats, M_TEMP); 2598 break; 2599 } 2600 2601 case DIOCRCLRTSTATS: { 2602 struct pfioc_table *io = (struct pfioc_table *)addr; 2603 struct pfr_table *pfrts; 2604 size_t totlen; 2605 2606 if (io->pfrio_esize != sizeof(struct pfr_table)) { 2607 error = ENODEV; 2608 break; 2609 } 2610 totlen = io->pfrio_size * sizeof(struct pfr_table); 2611 pfrts = malloc(totlen, M_TEMP, M_WAITOK); 2612 error = copyin(io->pfrio_buffer, pfrts, totlen); 2613 if (error) { 2614 free(pfrts, M_TEMP); 2615 break; 2616 } 2617 PF_RULES_WLOCK(); 2618 error = pfr_clr_tstats(pfrts, io->pfrio_size, 2619 &io->pfrio_nzero, io->pfrio_flags | PFR_FLAG_USERIOCTL); 2620 PF_RULES_WUNLOCK(); 2621 free(pfrts, M_TEMP); 2622 break; 2623 } 2624 2625 case DIOCRSETTFLAGS: { 2626 struct pfioc_table *io = (struct pfioc_table *)addr; 2627 struct pfr_table *pfrts; 2628 size_t totlen; 2629 2630 if (io->pfrio_esize != sizeof(struct pfr_table)) { 2631 error = ENODEV; 2632 break; 2633 } 2634 totlen = io->pfrio_size * sizeof(struct pfr_table); 2635 pfrts = malloc(totlen, M_TEMP, M_WAITOK); 2636 error = copyin(io->pfrio_buffer, pfrts, totlen); 2637 if (error) { 2638 free(pfrts, M_TEMP); 2639 break; 2640 } 2641 PF_RULES_WLOCK(); 2642 error = pfr_set_tflags(pfrts, io->pfrio_size, 2643 io->pfrio_setflag, io->pfrio_clrflag, &io->pfrio_nchange, 2644 &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL); 2645 PF_RULES_WUNLOCK(); 2646 free(pfrts, M_TEMP); 2647 break; 2648 } 2649 2650 case DIOCRCLRADDRS: { 2651 struct pfioc_table *io = (struct pfioc_table *)addr; 2652 2653 if (io->pfrio_esize != 0) { 2654 error = ENODEV; 2655 break; 2656 } 2657 PF_RULES_WLOCK(); 2658 error = pfr_clr_addrs(&io->pfrio_table, &io->pfrio_ndel, 2659 io->pfrio_flags | PFR_FLAG_USERIOCTL); 2660 PF_RULES_WUNLOCK(); 2661 break; 2662 } 2663 2664 case DIOCRADDADDRS: { 2665 struct pfioc_table *io = (struct pfioc_table *)addr; 2666 struct pfr_addr *pfras; 2667 size_t totlen; 2668 2669 if (io->pfrio_esize != sizeof(struct pfr_addr)) { 2670 error = ENODEV; 2671 break; 2672 } 2673 totlen = io->pfrio_size * sizeof(struct pfr_addr); 2674 pfras = malloc(totlen, M_TEMP, M_WAITOK); 2675 error = copyin(io->pfrio_buffer, pfras, totlen); 2676 if (error) { 2677 free(pfras, M_TEMP); 2678 break; 2679 } 2680 PF_RULES_WLOCK(); 2681 error = pfr_add_addrs(&io->pfrio_table, pfras, 2682 io->pfrio_size, &io->pfrio_nadd, io->pfrio_flags | 2683 PFR_FLAG_USERIOCTL); 2684 PF_RULES_WUNLOCK(); 2685 if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK) 2686 error = copyout(pfras, io->pfrio_buffer, totlen); 2687 free(pfras, M_TEMP); 2688 break; 2689 } 2690 2691 case DIOCRDELADDRS: { 2692 struct pfioc_table *io = (struct pfioc_table *)addr; 2693 struct pfr_addr *pfras; 2694 size_t totlen; 2695 2696 if (io->pfrio_esize != sizeof(struct pfr_addr)) { 2697 error = ENODEV; 2698 break; 2699 } 2700 totlen = io->pfrio_size * sizeof(struct pfr_addr); 2701 pfras = malloc(totlen, M_TEMP, M_WAITOK); 2702 error = copyin(io->pfrio_buffer, pfras, totlen); 2703 if (error) { 2704 free(pfras, M_TEMP); 2705 break; 2706 } 2707 PF_RULES_WLOCK(); 2708 error = pfr_del_addrs(&io->pfrio_table, pfras, 2709 io->pfrio_size, &io->pfrio_ndel, io->pfrio_flags | 2710 PFR_FLAG_USERIOCTL); 2711 PF_RULES_WUNLOCK(); 2712 if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK) 2713 error = copyout(pfras, io->pfrio_buffer, totlen); 2714 free(pfras, M_TEMP); 2715 break; 2716 } 2717 2718 case DIOCRSETADDRS: { 2719 struct pfioc_table *io = (struct pfioc_table *)addr; 2720 struct pfr_addr *pfras; 2721 size_t totlen; 2722 2723 if (io->pfrio_esize != sizeof(struct pfr_addr)) { 2724 error = ENODEV; 2725 break; 2726 } 2727 totlen = (io->pfrio_size + io->pfrio_size2) * 2728 sizeof(struct pfr_addr); 2729 pfras = malloc(totlen, M_TEMP, M_WAITOK); 2730 error = copyin(io->pfrio_buffer, pfras, totlen); 2731 if (error) { 2732 free(pfras, M_TEMP); 2733 break; 2734 } 2735 PF_RULES_WLOCK(); 2736 error = pfr_set_addrs(&io->pfrio_table, pfras, 2737 io->pfrio_size, &io->pfrio_size2, &io->pfrio_nadd, 2738 &io->pfrio_ndel, &io->pfrio_nchange, io->pfrio_flags | 2739 PFR_FLAG_USERIOCTL, 0); 2740 PF_RULES_WUNLOCK(); 2741 if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK) 2742 error = copyout(pfras, io->pfrio_buffer, totlen); 2743 free(pfras, M_TEMP); 2744 break; 2745 } 2746 2747 case DIOCRGETADDRS: { 2748 struct pfioc_table *io = (struct pfioc_table *)addr; 2749 struct pfr_addr *pfras; 2750 size_t totlen; 2751 2752 if (io->pfrio_esize != sizeof(struct pfr_addr)) { 2753 error = ENODEV; 2754 break; 2755 } 2756 totlen = io->pfrio_size * sizeof(struct pfr_addr); 2757 pfras = malloc(totlen, M_TEMP, M_WAITOK); 2758 PF_RULES_RLOCK(); 2759 error = pfr_get_addrs(&io->pfrio_table, pfras, 2760 &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL); 2761 PF_RULES_RUNLOCK(); 2762 if (error == 0) 2763 error = copyout(pfras, io->pfrio_buffer, totlen); 2764 free(pfras, M_TEMP); 2765 break; 2766 } 2767 2768 case DIOCRGETASTATS: { 2769 struct pfioc_table *io = (struct pfioc_table *)addr; 2770 struct pfr_astats *pfrastats; 2771 size_t totlen; 2772 2773 if (io->pfrio_esize != sizeof(struct pfr_astats)) { 2774 error = ENODEV; 2775 break; 2776 } 2777 totlen = io->pfrio_size * sizeof(struct pfr_astats); 2778 pfrastats = malloc(totlen, M_TEMP, M_WAITOK); 2779 PF_RULES_RLOCK(); 2780 error = pfr_get_astats(&io->pfrio_table, pfrastats, 2781 &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL); 2782 PF_RULES_RUNLOCK(); 2783 if (error == 0) 2784 error = copyout(pfrastats, io->pfrio_buffer, totlen); 2785 free(pfrastats, M_TEMP); 2786 break; 2787 } 2788 2789 case DIOCRCLRASTATS: { 2790 struct pfioc_table *io = (struct pfioc_table *)addr; 2791 struct pfr_addr *pfras; 2792 size_t totlen; 2793 2794 if (io->pfrio_esize != sizeof(struct pfr_addr)) { 2795 error = ENODEV; 2796 break; 2797 } 2798 totlen = io->pfrio_size * sizeof(struct pfr_addr); 2799 pfras = malloc(totlen, M_TEMP, M_WAITOK); 2800 error = copyin(io->pfrio_buffer, pfras, totlen); 2801 if (error) { 2802 free(pfras, M_TEMP); 2803 break; 2804 } 2805 PF_RULES_WLOCK(); 2806 error = pfr_clr_astats(&io->pfrio_table, pfras, 2807 io->pfrio_size, &io->pfrio_nzero, io->pfrio_flags | 2808 PFR_FLAG_USERIOCTL); 2809 PF_RULES_WUNLOCK(); 2810 if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK) 2811 error = copyout(pfras, io->pfrio_buffer, totlen); 2812 free(pfras, M_TEMP); 2813 break; 2814 } 2815 2816 case DIOCRTSTADDRS: { 2817 struct pfioc_table *io = (struct pfioc_table *)addr; 2818 struct pfr_addr *pfras; 2819 size_t totlen; 2820 2821 if (io->pfrio_esize != sizeof(struct pfr_addr)) { 2822 error = ENODEV; 2823 break; 2824 } 2825 totlen = io->pfrio_size * sizeof(struct pfr_addr); 2826 pfras = malloc(totlen, M_TEMP, M_WAITOK); 2827 error = copyin(io->pfrio_buffer, pfras, totlen); 2828 if (error) { 2829 free(pfras, M_TEMP); 2830 break; 2831 } 2832 PF_RULES_RLOCK(); 2833 error = pfr_tst_addrs(&io->pfrio_table, pfras, 2834 io->pfrio_size, &io->pfrio_nmatch, io->pfrio_flags | 2835 PFR_FLAG_USERIOCTL); 2836 PF_RULES_RUNLOCK(); 2837 if (error == 0) 2838 error = copyout(pfras, io->pfrio_buffer, totlen); 2839 free(pfras, M_TEMP); 2840 break; 2841 } 2842 2843 case DIOCRINADEFINE: { 2844 struct pfioc_table *io = (struct pfioc_table *)addr; 2845 struct pfr_addr *pfras; 2846 size_t totlen; 2847 2848 if (io->pfrio_esize != sizeof(struct pfr_addr)) { 2849 error = ENODEV; 2850 break; 2851 } 2852 totlen = io->pfrio_size * sizeof(struct pfr_addr); 2853 pfras = malloc(totlen, M_TEMP, M_WAITOK); 2854 error = copyin(io->pfrio_buffer, pfras, totlen); 2855 if (error) { 2856 free(pfras, M_TEMP); 2857 break; 2858 } 2859 PF_RULES_WLOCK(); 2860 error = pfr_ina_define(&io->pfrio_table, pfras, 2861 io->pfrio_size, &io->pfrio_nadd, &io->pfrio_naddr, 2862 io->pfrio_ticket, io->pfrio_flags | PFR_FLAG_USERIOCTL); 2863 PF_RULES_WUNLOCK(); 2864 free(pfras, M_TEMP); 2865 break; 2866 } 2867 2868 case DIOCOSFPADD: { 2869 struct pf_osfp_ioctl *io = (struct pf_osfp_ioctl *)addr; 2870 PF_RULES_WLOCK(); 2871 error = pf_osfp_add(io); 2872 PF_RULES_WUNLOCK(); 2873 break; 2874 } 2875 2876 case DIOCOSFPGET: { 2877 struct pf_osfp_ioctl *io = (struct pf_osfp_ioctl *)addr; 2878 PF_RULES_RLOCK(); 2879 error = pf_osfp_get(io); 2880 PF_RULES_RUNLOCK(); 2881 break; 2882 } 2883 2884 case DIOCXBEGIN: { 2885 struct pfioc_trans *io = (struct pfioc_trans *)addr; 2886 struct pfioc_trans_e *ioes, *ioe; 2887 size_t totlen; 2888 int i; 2889 2890 if (io->esize != sizeof(*ioe)) { 2891 error = ENODEV; 2892 break; 2893 } 2894 totlen = sizeof(struct pfioc_trans_e) * io->size; 2895 ioes = malloc(totlen, M_TEMP, M_WAITOK); 2896 error = copyin(io->array, ioes, totlen); 2897 if (error) { 2898 free(ioes, M_TEMP); 2899 break; 2900 } 2901 PF_RULES_WLOCK(); 2902 for (i = 0, ioe = ioes; i < io->size; i++, ioe++) { 2903 switch (ioe->rs_num) { 2904 #ifdef ALTQ 2905 case PF_RULESET_ALTQ: 2906 if (ioe->anchor[0]) { 2907 PF_RULES_WUNLOCK(); 2908 free(ioes, M_TEMP); 2909 error = EINVAL; 2910 goto fail; 2911 } 2912 if ((error = pf_begin_altq(&ioe->ticket))) { 2913 PF_RULES_WUNLOCK(); 2914 free(ioes, M_TEMP); 2915 goto fail; 2916 } 2917 break; 2918 #endif /* ALTQ */ 2919 case PF_RULESET_TABLE: 2920 { 2921 struct pfr_table table; 2922 2923 bzero(&table, sizeof(table)); 2924 strlcpy(table.pfrt_anchor, ioe->anchor, 2925 sizeof(table.pfrt_anchor)); 2926 if ((error = pfr_ina_begin(&table, 2927 &ioe->ticket, NULL, 0))) { 2928 PF_RULES_WUNLOCK(); 2929 free(ioes, M_TEMP); 2930 goto fail; 2931 } 2932 break; 2933 } 2934 default: 2935 if ((error = pf_begin_rules(&ioe->ticket, 2936 ioe->rs_num, ioe->anchor))) { 2937 PF_RULES_WUNLOCK(); 2938 free(ioes, M_TEMP); 2939 goto fail; 2940 } 2941 break; 2942 } 2943 } 2944 PF_RULES_WUNLOCK(); 2945 error = copyout(ioes, io->array, totlen); 2946 free(ioes, M_TEMP); 2947 break; 2948 } 2949 2950 case DIOCXROLLBACK: { 2951 struct pfioc_trans *io = (struct pfioc_trans *)addr; 2952 struct pfioc_trans_e *ioe, *ioes; 2953 size_t totlen; 2954 int i; 2955 2956 if (io->esize != sizeof(*ioe)) { 2957 error = ENODEV; 2958 break; 2959 } 2960 totlen = sizeof(struct pfioc_trans_e) * io->size; 2961 ioes = malloc(totlen, M_TEMP, M_WAITOK); 2962 error = copyin(io->array, ioes, totlen); 2963 if (error) { 2964 free(ioes, M_TEMP); 2965 break; 2966 } 2967 PF_RULES_WLOCK(); 2968 for (i = 0, ioe = ioes; i < io->size; i++, ioe++) { 2969 switch (ioe->rs_num) { 2970 #ifdef ALTQ 2971 case PF_RULESET_ALTQ: 2972 if (ioe->anchor[0]) { 2973 PF_RULES_WUNLOCK(); 2974 free(ioes, M_TEMP); 2975 error = EINVAL; 2976 goto fail; 2977 } 2978 if ((error = pf_rollback_altq(ioe->ticket))) { 2979 PF_RULES_WUNLOCK(); 2980 free(ioes, M_TEMP); 2981 goto fail; /* really bad */ 2982 } 2983 break; 2984 #endif /* ALTQ */ 2985 case PF_RULESET_TABLE: 2986 { 2987 struct pfr_table table; 2988 2989 bzero(&table, sizeof(table)); 2990 strlcpy(table.pfrt_anchor, ioe->anchor, 2991 sizeof(table.pfrt_anchor)); 2992 if ((error = pfr_ina_rollback(&table, 2993 ioe->ticket, NULL, 0))) { 2994 PF_RULES_WUNLOCK(); 2995 free(ioes, M_TEMP); 2996 goto fail; /* really bad */ 2997 } 2998 break; 2999 } 3000 default: 3001 if ((error = pf_rollback_rules(ioe->ticket, 3002 ioe->rs_num, ioe->anchor))) { 3003 PF_RULES_WUNLOCK(); 3004 free(ioes, M_TEMP); 3005 goto fail; /* really bad */ 3006 } 3007 break; 3008 } 3009 } 3010 PF_RULES_WUNLOCK(); 3011 free(ioes, M_TEMP); 3012 break; 3013 } 3014 3015 case DIOCXCOMMIT: { 3016 struct pfioc_trans *io = (struct pfioc_trans *)addr; 3017 struct pfioc_trans_e *ioe, *ioes; 3018 struct pf_ruleset *rs; 3019 size_t totlen; 3020 int i; 3021 3022 if (io->esize != sizeof(*ioe)) { 3023 error = ENODEV; 3024 break; 3025 } 3026 totlen = sizeof(struct pfioc_trans_e) * io->size; 3027 ioes = malloc(totlen, M_TEMP, M_WAITOK); 3028 error = copyin(io->array, ioes, totlen); 3029 if (error) { 3030 free(ioes, M_TEMP); 3031 break; 3032 } 3033 PF_RULES_WLOCK(); 3034 /* First makes sure everything will succeed. */ 3035 for (i = 0, ioe = ioes; i < io->size; i++, ioe++) { 3036 switch (ioe->rs_num) { 3037 #ifdef ALTQ 3038 case PF_RULESET_ALTQ: 3039 if (ioe->anchor[0]) { 3040 PF_RULES_WUNLOCK(); 3041 free(ioes, M_TEMP); 3042 error = EINVAL; 3043 goto fail; 3044 } 3045 if (!V_altqs_inactive_open || ioe->ticket != 3046 V_ticket_altqs_inactive) { 3047 PF_RULES_WUNLOCK(); 3048 free(ioes, M_TEMP); 3049 error = EBUSY; 3050 goto fail; 3051 } 3052 break; 3053 #endif /* ALTQ */ 3054 case PF_RULESET_TABLE: 3055 rs = pf_find_ruleset(ioe->anchor); 3056 if (rs == NULL || !rs->topen || ioe->ticket != 3057 rs->tticket) { 3058 PF_RULES_WUNLOCK(); 3059 free(ioes, M_TEMP); 3060 error = EBUSY; 3061 goto fail; 3062 } 3063 break; 3064 default: 3065 if (ioe->rs_num < 0 || ioe->rs_num >= 3066 PF_RULESET_MAX) { 3067 PF_RULES_WUNLOCK(); 3068 free(ioes, M_TEMP); 3069 error = EINVAL; 3070 goto fail; 3071 } 3072 rs = pf_find_ruleset(ioe->anchor); 3073 if (rs == NULL || 3074 !rs->rules[ioe->rs_num].inactive.open || 3075 rs->rules[ioe->rs_num].inactive.ticket != 3076 ioe->ticket) { 3077 PF_RULES_WUNLOCK(); 3078 free(ioes, M_TEMP); 3079 error = EBUSY; 3080 goto fail; 3081 } 3082 break; 3083 } 3084 } 3085 /* Now do the commit - no errors should happen here. */ 3086 for (i = 0, ioe = ioes; i < io->size; i++, ioe++) { 3087 switch (ioe->rs_num) { 3088 #ifdef ALTQ 3089 case PF_RULESET_ALTQ: 3090 if ((error = pf_commit_altq(ioe->ticket))) { 3091 PF_RULES_WUNLOCK(); 3092 free(ioes, M_TEMP); 3093 goto fail; /* really bad */ 3094 } 3095 break; 3096 #endif /* ALTQ */ 3097 case PF_RULESET_TABLE: 3098 { 3099 struct pfr_table table; 3100 3101 bzero(&table, sizeof(table)); 3102 strlcpy(table.pfrt_anchor, ioe->anchor, 3103 sizeof(table.pfrt_anchor)); 3104 if ((error = pfr_ina_commit(&table, 3105 ioe->ticket, NULL, NULL, 0))) { 3106 PF_RULES_WUNLOCK(); 3107 free(ioes, M_TEMP); 3108 goto fail; /* really bad */ 3109 } 3110 break; 3111 } 3112 default: 3113 if ((error = pf_commit_rules(ioe->ticket, 3114 ioe->rs_num, ioe->anchor))) { 3115 PF_RULES_WUNLOCK(); 3116 free(ioes, M_TEMP); 3117 goto fail; /* really bad */ 3118 } 3119 break; 3120 } 3121 } 3122 PF_RULES_WUNLOCK(); 3123 free(ioes, M_TEMP); 3124 break; 3125 } 3126 3127 case DIOCGETSRCNODES: { 3128 struct pfioc_src_nodes *psn = (struct pfioc_src_nodes *)addr; 3129 struct pf_srchash *sh; 3130 struct pf_src_node *n, *p, *pstore; 3131 uint32_t i, nr = 0; 3132 3133 if (psn->psn_len == 0) { 3134 for (i = 0, sh = V_pf_srchash; i <= pf_srchashmask; 3135 i++, sh++) { 3136 PF_HASHROW_LOCK(sh); 3137 LIST_FOREACH(n, &sh->nodes, entry) 3138 nr++; 3139 PF_HASHROW_UNLOCK(sh); 3140 } 3141 psn->psn_len = sizeof(struct pf_src_node) * nr; 3142 break; 3143 } 3144 3145 p = pstore = malloc(psn->psn_len, M_TEMP, M_WAITOK); 3146 for (i = 0, sh = V_pf_srchash; i <= pf_srchashmask; 3147 i++, sh++) { 3148 PF_HASHROW_LOCK(sh); 3149 LIST_FOREACH(n, &sh->nodes, entry) { 3150 int secs = time_uptime, diff; 3151 3152 if ((nr + 1) * sizeof(*p) > (unsigned)psn->psn_len) 3153 break; 3154 3155 bcopy(n, p, sizeof(struct pf_src_node)); 3156 if (n->rule.ptr != NULL) 3157 p->rule.nr = n->rule.ptr->nr; 3158 p->creation = secs - p->creation; 3159 if (p->expire > secs) 3160 p->expire -= secs; 3161 else 3162 p->expire = 0; 3163 3164 /* Adjust the connection rate estimate. */ 3165 diff = secs - n->conn_rate.last; 3166 if (diff >= n->conn_rate.seconds) 3167 p->conn_rate.count = 0; 3168 else 3169 p->conn_rate.count -= 3170 n->conn_rate.count * diff / 3171 n->conn_rate.seconds; 3172 p++; 3173 nr++; 3174 } 3175 PF_HASHROW_UNLOCK(sh); 3176 } 3177 error = copyout(pstore, psn->psn_src_nodes, 3178 sizeof(struct pf_src_node) * nr); 3179 if (error) { 3180 free(pstore, M_TEMP); 3181 break; 3182 } 3183 psn->psn_len = sizeof(struct pf_src_node) * nr; 3184 free(pstore, M_TEMP); 3185 break; 3186 } 3187 3188 case DIOCCLRSRCNODES: { 3189 3190 pf_clear_srcnodes(NULL); 3191 pf_purge_expired_src_nodes(); 3192 break; 3193 } 3194 3195 case DIOCKILLSRCNODES: 3196 pf_kill_srcnodes((struct pfioc_src_node_kill *)addr); 3197 break; 3198 3199 case DIOCSETHOSTID: { 3200 u_int32_t *hostid = (u_int32_t *)addr; 3201 3202 PF_RULES_WLOCK(); 3203 if (*hostid == 0) 3204 V_pf_status.hostid = arc4random(); 3205 else 3206 V_pf_status.hostid = *hostid; 3207 PF_RULES_WUNLOCK(); 3208 break; 3209 } 3210 3211 case DIOCOSFPFLUSH: 3212 PF_RULES_WLOCK(); 3213 pf_osfp_flush(); 3214 PF_RULES_WUNLOCK(); 3215 break; 3216 3217 case DIOCIGETIFACES: { 3218 struct pfioc_iface *io = (struct pfioc_iface *)addr; 3219 struct pfi_kif *ifstore; 3220 size_t bufsiz; 3221 3222 if (io->pfiio_esize != sizeof(struct pfi_kif)) { 3223 error = ENODEV; 3224 break; 3225 } 3226 3227 bufsiz = io->pfiio_size * sizeof(struct pfi_kif); 3228 ifstore = malloc(bufsiz, M_TEMP, M_WAITOK); 3229 PF_RULES_RLOCK(); 3230 pfi_get_ifaces(io->pfiio_name, ifstore, &io->pfiio_size); 3231 PF_RULES_RUNLOCK(); 3232 error = copyout(ifstore, io->pfiio_buffer, bufsiz); 3233 free(ifstore, M_TEMP); 3234 break; 3235 } 3236 3237 case DIOCSETIFFLAG: { 3238 struct pfioc_iface *io = (struct pfioc_iface *)addr; 3239 3240 PF_RULES_WLOCK(); 3241 error = pfi_set_flags(io->pfiio_name, io->pfiio_flags); 3242 PF_RULES_WUNLOCK(); 3243 break; 3244 } 3245 3246 case DIOCCLRIFFLAG: { 3247 struct pfioc_iface *io = (struct pfioc_iface *)addr; 3248 3249 PF_RULES_WLOCK(); 3250 error = pfi_clear_flags(io->pfiio_name, io->pfiio_flags); 3251 PF_RULES_WUNLOCK(); 3252 break; 3253 } 3254 3255 default: 3256 error = ENODEV; 3257 break; 3258 } 3259 fail: 3260 if (sx_xlocked(&pf_ioctl_lock)) 3261 sx_xunlock(&pf_ioctl_lock); 3262 CURVNET_RESTORE(); 3263 3264 return (error); 3265 } 3266 3267 void 3268 pfsync_state_export(struct pfsync_state *sp, struct pf_state *st) 3269 { 3270 bzero(sp, sizeof(struct pfsync_state)); 3271 3272 /* copy from state key */ 3273 sp->key[PF_SK_WIRE].addr[0] = st->key[PF_SK_WIRE]->addr[0]; 3274 sp->key[PF_SK_WIRE].addr[1] = st->key[PF_SK_WIRE]->addr[1]; 3275 sp->key[PF_SK_WIRE].port[0] = st->key[PF_SK_WIRE]->port[0]; 3276 sp->key[PF_SK_WIRE].port[1] = st->key[PF_SK_WIRE]->port[1]; 3277 sp->key[PF_SK_STACK].addr[0] = st->key[PF_SK_STACK]->addr[0]; 3278 sp->key[PF_SK_STACK].addr[1] = st->key[PF_SK_STACK]->addr[1]; 3279 sp->key[PF_SK_STACK].port[0] = st->key[PF_SK_STACK]->port[0]; 3280 sp->key[PF_SK_STACK].port[1] = st->key[PF_SK_STACK]->port[1]; 3281 sp->proto = st->key[PF_SK_WIRE]->proto; 3282 sp->af = st->key[PF_SK_WIRE]->af; 3283 3284 /* copy from state */ 3285 strlcpy(sp->ifname, st->kif->pfik_name, sizeof(sp->ifname)); 3286 bcopy(&st->rt_addr, &sp->rt_addr, sizeof(sp->rt_addr)); 3287 sp->creation = htonl(time_uptime - st->creation); 3288 sp->expire = pf_state_expires(st); 3289 if (sp->expire <= time_uptime) 3290 sp->expire = htonl(0); 3291 else 3292 sp->expire = htonl(sp->expire - time_uptime); 3293 3294 sp->direction = st->direction; 3295 sp->log = st->log; 3296 sp->timeout = st->timeout; 3297 sp->state_flags = st->state_flags; 3298 if (st->src_node) 3299 sp->sync_flags |= PFSYNC_FLAG_SRCNODE; 3300 if (st->nat_src_node) 3301 sp->sync_flags |= PFSYNC_FLAG_NATSRCNODE; 3302 3303 sp->id = st->id; 3304 sp->creatorid = st->creatorid; 3305 pf_state_peer_hton(&st->src, &sp->src); 3306 pf_state_peer_hton(&st->dst, &sp->dst); 3307 3308 if (st->rule.ptr == NULL) 3309 sp->rule = htonl(-1); 3310 else 3311 sp->rule = htonl(st->rule.ptr->nr); 3312 if (st->anchor.ptr == NULL) 3313 sp->anchor = htonl(-1); 3314 else 3315 sp->anchor = htonl(st->anchor.ptr->nr); 3316 if (st->nat_rule.ptr == NULL) 3317 sp->nat_rule = htonl(-1); 3318 else 3319 sp->nat_rule = htonl(st->nat_rule.ptr->nr); 3320 3321 pf_state_counter_hton(st->packets[0], sp->packets[0]); 3322 pf_state_counter_hton(st->packets[1], sp->packets[1]); 3323 pf_state_counter_hton(st->bytes[0], sp->bytes[0]); 3324 pf_state_counter_hton(st->bytes[1], sp->bytes[1]); 3325 3326 } 3327 3328 static void 3329 pf_tbladdr_copyout(struct pf_addr_wrap *aw) 3330 { 3331 struct pfr_ktable *kt; 3332 3333 KASSERT(aw->type == PF_ADDR_TABLE, ("%s: type %u", __func__, aw->type)); 3334 3335 kt = aw->p.tbl; 3336 if (!(kt->pfrkt_flags & PFR_TFLAG_ACTIVE) && kt->pfrkt_root != NULL) 3337 kt = kt->pfrkt_root; 3338 aw->p.tbl = NULL; 3339 aw->p.tblcnt = (kt->pfrkt_flags & PFR_TFLAG_ACTIVE) ? 3340 kt->pfrkt_cnt : -1; 3341 } 3342 3343 /* 3344 * XXX - Check for version missmatch!!! 3345 */ 3346 static void 3347 pf_clear_states(void) 3348 { 3349 struct pf_state *s; 3350 u_int i; 3351 3352 for (i = 0; i <= pf_hashmask; i++) { 3353 struct pf_idhash *ih = &V_pf_idhash[i]; 3354 relock: 3355 PF_HASHROW_LOCK(ih); 3356 LIST_FOREACH(s, &ih->states, entry) { 3357 s->timeout = PFTM_PURGE; 3358 /* Don't send out individual delete messages. */ 3359 s->sync_state = PFSTATE_NOSYNC; 3360 pf_unlink_state(s, PF_ENTER_LOCKED); 3361 goto relock; 3362 } 3363 PF_HASHROW_UNLOCK(ih); 3364 } 3365 } 3366 3367 static int 3368 pf_clear_tables(void) 3369 { 3370 struct pfioc_table io; 3371 int error; 3372 3373 bzero(&io, sizeof(io)); 3374 3375 error = pfr_clr_tables(&io.pfrio_table, &io.pfrio_ndel, 3376 io.pfrio_flags); 3377 3378 return (error); 3379 } 3380 3381 static void 3382 pf_clear_srcnodes(struct pf_src_node *n) 3383 { 3384 struct pf_state *s; 3385 int i; 3386 3387 for (i = 0; i <= pf_hashmask; i++) { 3388 struct pf_idhash *ih = &V_pf_idhash[i]; 3389 3390 PF_HASHROW_LOCK(ih); 3391 LIST_FOREACH(s, &ih->states, entry) { 3392 if (n == NULL || n == s->src_node) 3393 s->src_node = NULL; 3394 if (n == NULL || n == s->nat_src_node) 3395 s->nat_src_node = NULL; 3396 } 3397 PF_HASHROW_UNLOCK(ih); 3398 } 3399 3400 if (n == NULL) { 3401 struct pf_srchash *sh; 3402 3403 for (i = 0, sh = V_pf_srchash; i <= pf_srchashmask; 3404 i++, sh++) { 3405 PF_HASHROW_LOCK(sh); 3406 LIST_FOREACH(n, &sh->nodes, entry) { 3407 n->expire = 1; 3408 n->states = 0; 3409 } 3410 PF_HASHROW_UNLOCK(sh); 3411 } 3412 } else { 3413 /* XXX: hash slot should already be locked here. */ 3414 n->expire = 1; 3415 n->states = 0; 3416 } 3417 } 3418 3419 static void 3420 pf_kill_srcnodes(struct pfioc_src_node_kill *psnk) 3421 { 3422 struct pf_src_node_list kill; 3423 3424 LIST_INIT(&kill); 3425 for (int i = 0; i <= pf_srchashmask; i++) { 3426 struct pf_srchash *sh = &V_pf_srchash[i]; 3427 struct pf_src_node *sn, *tmp; 3428 3429 PF_HASHROW_LOCK(sh); 3430 LIST_FOREACH_SAFE(sn, &sh->nodes, entry, tmp) 3431 if (PF_MATCHA(psnk->psnk_src.neg, 3432 &psnk->psnk_src.addr.v.a.addr, 3433 &psnk->psnk_src.addr.v.a.mask, 3434 &sn->addr, sn->af) && 3435 PF_MATCHA(psnk->psnk_dst.neg, 3436 &psnk->psnk_dst.addr.v.a.addr, 3437 &psnk->psnk_dst.addr.v.a.mask, 3438 &sn->raddr, sn->af)) { 3439 pf_unlink_src_node_locked(sn); 3440 LIST_INSERT_HEAD(&kill, sn, entry); 3441 sn->expire = 1; 3442 } 3443 PF_HASHROW_UNLOCK(sh); 3444 } 3445 3446 for (int i = 0; i <= pf_hashmask; i++) { 3447 struct pf_idhash *ih = &V_pf_idhash[i]; 3448 struct pf_state *s; 3449 3450 PF_HASHROW_LOCK(ih); 3451 LIST_FOREACH(s, &ih->states, entry) { 3452 if (s->src_node && s->src_node->expire == 1) { 3453 #ifdef INVARIANTS 3454 s->src_node->states--; 3455 #endif 3456 s->src_node = NULL; 3457 } 3458 if (s->nat_src_node && s->nat_src_node->expire == 1) { 3459 #ifdef INVARIANTS 3460 s->nat_src_node->states--; 3461 #endif 3462 s->nat_src_node = NULL; 3463 } 3464 } 3465 PF_HASHROW_UNLOCK(ih); 3466 } 3467 3468 psnk->psnk_killed = pf_free_src_nodes(&kill); 3469 } 3470 3471 /* 3472 * XXX - Check for version missmatch!!! 3473 */ 3474 3475 /* 3476 * Duplicate pfctl -Fa operation to get rid of as much as we can. 3477 */ 3478 static int 3479 shutdown_pf(void) 3480 { 3481 int error = 0; 3482 u_int32_t t[5]; 3483 char nn = '\0'; 3484 3485 V_pf_status.running = 0; 3486 3487 counter_u64_free(V_pf_default_rule.states_cur); 3488 counter_u64_free(V_pf_default_rule.states_tot); 3489 counter_u64_free(V_pf_default_rule.src_nodes); 3490 3491 for (int i = 0; i < PFRES_MAX; i++) 3492 counter_u64_free(V_pf_status.counters[i]); 3493 for (int i = 0; i < LCNT_MAX; i++) 3494 counter_u64_free(V_pf_status.lcounters[i]); 3495 for (int i = 0; i < FCNT_MAX; i++) 3496 counter_u64_free(V_pf_status.fcounters[i]); 3497 for (int i = 0; i < SCNT_MAX; i++) 3498 counter_u64_free(V_pf_status.scounters[i]); 3499 3500 do { 3501 if ((error = pf_begin_rules(&t[0], PF_RULESET_SCRUB, &nn)) 3502 != 0) { 3503 DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: SCRUB\n")); 3504 break; 3505 } 3506 if ((error = pf_begin_rules(&t[1], PF_RULESET_FILTER, &nn)) 3507 != 0) { 3508 DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: FILTER\n")); 3509 break; /* XXX: rollback? */ 3510 } 3511 if ((error = pf_begin_rules(&t[2], PF_RULESET_NAT, &nn)) 3512 != 0) { 3513 DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: NAT\n")); 3514 break; /* XXX: rollback? */ 3515 } 3516 if ((error = pf_begin_rules(&t[3], PF_RULESET_BINAT, &nn)) 3517 != 0) { 3518 DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: BINAT\n")); 3519 break; /* XXX: rollback? */ 3520 } 3521 if ((error = pf_begin_rules(&t[4], PF_RULESET_RDR, &nn)) 3522 != 0) { 3523 DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: RDR\n")); 3524 break; /* XXX: rollback? */ 3525 } 3526 3527 /* XXX: these should always succeed here */ 3528 pf_commit_rules(t[0], PF_RULESET_SCRUB, &nn); 3529 pf_commit_rules(t[1], PF_RULESET_FILTER, &nn); 3530 pf_commit_rules(t[2], PF_RULESET_NAT, &nn); 3531 pf_commit_rules(t[3], PF_RULESET_BINAT, &nn); 3532 pf_commit_rules(t[4], PF_RULESET_RDR, &nn); 3533 3534 if ((error = pf_clear_tables()) != 0) 3535 break; 3536 3537 #ifdef ALTQ 3538 if ((error = pf_begin_altq(&t[0])) != 0) { 3539 DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: ALTQ\n")); 3540 break; 3541 } 3542 pf_commit_altq(t[0]); 3543 #endif 3544 3545 pf_clear_states(); 3546 3547 pf_clear_srcnodes(NULL); 3548 3549 /* status does not use malloced mem so no need to cleanup */ 3550 /* fingerprints and interfaces have thier own cleanup code */ 3551 } while(0); 3552 3553 return (error); 3554 } 3555 3556 #ifdef INET 3557 static int 3558 pf_check_in(void *arg, struct mbuf **m, struct ifnet *ifp, int dir, 3559 struct inpcb *inp) 3560 { 3561 int chk; 3562 3563 chk = pf_test(PF_IN, ifp, m, inp); 3564 if (chk && *m) { 3565 m_freem(*m); 3566 *m = NULL; 3567 } 3568 3569 return (chk); 3570 } 3571 3572 static int 3573 pf_check_out(void *arg, struct mbuf **m, struct ifnet *ifp, int dir, 3574 struct inpcb *inp) 3575 { 3576 int chk; 3577 3578 /* We need a proper CSUM befor we start (s. OpenBSD ip_output) */ 3579 if ((*m)->m_pkthdr.csum_flags & CSUM_DELAY_DATA) { 3580 in_delayed_cksum(*m); 3581 (*m)->m_pkthdr.csum_flags &= ~CSUM_DELAY_DATA; 3582 } 3583 3584 chk = pf_test(PF_OUT, ifp, m, inp); 3585 if (chk && *m) { 3586 m_freem(*m); 3587 *m = NULL; 3588 } 3589 3590 return (chk); 3591 } 3592 #endif 3593 3594 #ifdef INET6 3595 static int 3596 pf_check6_in(void *arg, struct mbuf **m, struct ifnet *ifp, int dir, 3597 struct inpcb *inp) 3598 { 3599 int chk; 3600 3601 /* 3602 * In case of loopback traffic IPv6 uses the real interface in 3603 * order to support scoped addresses. In order to support stateful 3604 * filtering we have change this to lo0 as it is the case in IPv4. 3605 */ 3606 CURVNET_SET(ifp->if_vnet); 3607 chk = pf_test6(PF_IN, (*m)->m_flags & M_LOOP ? V_loif : ifp, m, inp); 3608 CURVNET_RESTORE(); 3609 if (chk && *m) { 3610 m_freem(*m); 3611 *m = NULL; 3612 } 3613 return chk; 3614 } 3615 3616 static int 3617 pf_check6_out(void *arg, struct mbuf **m, struct ifnet *ifp, int dir, 3618 struct inpcb *inp) 3619 { 3620 int chk; 3621 3622 /* We need a proper CSUM before we start (s. OpenBSD ip_output) */ 3623 if ((*m)->m_pkthdr.csum_flags & CSUM_DELAY_DATA_IPV6) { 3624 in6_delayed_cksum(*m, 3625 (*m)->m_pkthdr.len - sizeof(struct ip6_hdr), 3626 sizeof(struct ip6_hdr)); 3627 (*m)->m_pkthdr.csum_flags &= ~CSUM_DELAY_DATA_IPV6; 3628 } 3629 CURVNET_SET(ifp->if_vnet); 3630 chk = pf_test6(PF_OUT, ifp, m, inp); 3631 CURVNET_RESTORE(); 3632 if (chk && *m) { 3633 m_freem(*m); 3634 *m = NULL; 3635 } 3636 return chk; 3637 } 3638 #endif /* INET6 */ 3639 3640 static int 3641 hook_pf(void) 3642 { 3643 #ifdef INET 3644 struct pfil_head *pfh_inet; 3645 #endif 3646 #ifdef INET6 3647 struct pfil_head *pfh_inet6; 3648 #endif 3649 3650 if (V_pf_pfil_hooked) 3651 return (0); 3652 3653 #ifdef INET 3654 pfh_inet = pfil_head_get(PFIL_TYPE_AF, AF_INET); 3655 if (pfh_inet == NULL) 3656 return (ESRCH); /* XXX */ 3657 pfil_add_hook(pf_check_in, NULL, PFIL_IN | PFIL_WAITOK, pfh_inet); 3658 pfil_add_hook(pf_check_out, NULL, PFIL_OUT | PFIL_WAITOK, pfh_inet); 3659 #endif 3660 #ifdef INET6 3661 pfh_inet6 = pfil_head_get(PFIL_TYPE_AF, AF_INET6); 3662 if (pfh_inet6 == NULL) { 3663 #ifdef INET 3664 pfil_remove_hook(pf_check_in, NULL, PFIL_IN | PFIL_WAITOK, 3665 pfh_inet); 3666 pfil_remove_hook(pf_check_out, NULL, PFIL_OUT | PFIL_WAITOK, 3667 pfh_inet); 3668 #endif 3669 return (ESRCH); /* XXX */ 3670 } 3671 pfil_add_hook(pf_check6_in, NULL, PFIL_IN | PFIL_WAITOK, pfh_inet6); 3672 pfil_add_hook(pf_check6_out, NULL, PFIL_OUT | PFIL_WAITOK, pfh_inet6); 3673 #endif 3674 3675 V_pf_pfil_hooked = 1; 3676 return (0); 3677 } 3678 3679 static int 3680 dehook_pf(void) 3681 { 3682 #ifdef INET 3683 struct pfil_head *pfh_inet; 3684 #endif 3685 #ifdef INET6 3686 struct pfil_head *pfh_inet6; 3687 #endif 3688 3689 if (V_pf_pfil_hooked == 0) 3690 return (0); 3691 3692 #ifdef INET 3693 pfh_inet = pfil_head_get(PFIL_TYPE_AF, AF_INET); 3694 if (pfh_inet == NULL) 3695 return (ESRCH); /* XXX */ 3696 pfil_remove_hook(pf_check_in, NULL, PFIL_IN | PFIL_WAITOK, 3697 pfh_inet); 3698 pfil_remove_hook(pf_check_out, NULL, PFIL_OUT | PFIL_WAITOK, 3699 pfh_inet); 3700 #endif 3701 #ifdef INET6 3702 pfh_inet6 = pfil_head_get(PFIL_TYPE_AF, AF_INET6); 3703 if (pfh_inet6 == NULL) 3704 return (ESRCH); /* XXX */ 3705 pfil_remove_hook(pf_check6_in, NULL, PFIL_IN | PFIL_WAITOK, 3706 pfh_inet6); 3707 pfil_remove_hook(pf_check6_out, NULL, PFIL_OUT | PFIL_WAITOK, 3708 pfh_inet6); 3709 #endif 3710 3711 V_pf_pfil_hooked = 0; 3712 return (0); 3713 } 3714 3715 static int 3716 pf_load(void) 3717 { 3718 int error; 3719 3720 VNET_ITERATOR_DECL(vnet_iter); 3721 3722 VNET_LIST_RLOCK(); 3723 VNET_FOREACH(vnet_iter) { 3724 CURVNET_SET(vnet_iter); 3725 V_pf_pfil_hooked = 0; 3726 V_pf_end_threads = 0; 3727 TAILQ_INIT(&V_pf_tags); 3728 TAILQ_INIT(&V_pf_qids); 3729 CURVNET_RESTORE(); 3730 } 3731 VNET_LIST_RUNLOCK(); 3732 3733 rw_init(&pf_rules_lock, "pf rulesets"); 3734 sx_init(&pf_ioctl_lock, "pf ioctl"); 3735 3736 pf_dev = make_dev(&pf_cdevsw, 0, 0, 0, 0600, PF_NAME); 3737 if ((error = pfattach()) != 0) 3738 return (error); 3739 3740 return (0); 3741 } 3742 3743 static int 3744 pf_unload(void) 3745 { 3746 int error = 0; 3747 3748 V_pf_status.running = 0; 3749 swi_remove(V_pf_swi_cookie); 3750 error = dehook_pf(); 3751 if (error) { 3752 /* 3753 * Should not happen! 3754 * XXX Due to error code ESRCH, kldunload will show 3755 * a message like 'No such process'. 3756 */ 3757 printf("%s : pfil unregisteration fail\n", __FUNCTION__); 3758 return error; 3759 } 3760 PF_RULES_WLOCK(); 3761 shutdown_pf(); 3762 V_pf_end_threads = 1; 3763 while (V_pf_end_threads < 2) { 3764 wakeup_one(pf_purge_thread); 3765 rw_sleep(pf_purge_thread, &pf_rules_lock, 0, "pftmo", 0); 3766 } 3767 pf_normalize_cleanup(); 3768 pfi_cleanup(); 3769 pfr_cleanup(); 3770 pf_osfp_flush(); 3771 pf_cleanup(); 3772 if (IS_DEFAULT_VNET(curvnet)) 3773 pf_mtag_cleanup(); 3774 PF_RULES_WUNLOCK(); 3775 destroy_dev(pf_dev); 3776 rw_destroy(&pf_rules_lock); 3777 sx_destroy(&pf_ioctl_lock); 3778 3779 return (error); 3780 } 3781 3782 static int 3783 pf_modevent(module_t mod, int type, void *data) 3784 { 3785 int error = 0; 3786 3787 switch(type) { 3788 case MOD_LOAD: 3789 error = pf_load(); 3790 break; 3791 case MOD_QUIESCE: 3792 /* 3793 * Module should not be unloaded due to race conditions. 3794 */ 3795 error = EBUSY; 3796 break; 3797 case MOD_UNLOAD: 3798 error = pf_unload(); 3799 break; 3800 default: 3801 error = EINVAL; 3802 break; 3803 } 3804 3805 return (error); 3806 } 3807 3808 static moduledata_t pf_mod = { 3809 "pf", 3810 pf_modevent, 3811 0 3812 }; 3813 3814 DECLARE_MODULE(pf, pf_mod, SI_SUB_PSEUDO, SI_ORDER_FIRST); 3815 MODULE_VERSION(pf, PF_MODVER); 3816