sys/netpfil/pf/pf_ioctl.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause
   3  *
   4  * Copyright (c) 2001 Daniel Hartmeier
   5  * Copyright (c) 2002,2003 Henning Brauer
   6  * Copyright (c) 2012 Gleb Smirnoff <glebius@FreeBSD.org>
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  *    - Redistributions of source code must retain the above copyright
  14  *      notice, this list of conditions and the following disclaimer.
  15  *    - Redistributions in binary form must reproduce the above
  16  *      copyright notice, this list of conditions and the following
  17  *      disclaimer in the documentation and/or other materials provided
  18  *      with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  23  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  24  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  26  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  27  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  28  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  30  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31  * POSSIBILITY OF SUCH DAMAGE.
  32  *
  33  * Effort sponsored in part by the Defense Advanced Research Projects
  34  * Agency (DARPA) and Air Force Research Laboratory, Air Force
  35  * Materiel Command, USAF, under agreement number F30602-01-2-0537.
  36  *
  37  *      $OpenBSD: pf_ioctl.c,v 1.213 2009/02/15 21:46:12 mbalmer Exp $
  38  */
  39
  40 #include <sys/cdefs.h>
  41 __FBSDID("$FreeBSD$");
  42
  43 #include "opt_inet.h"
  44 #include "opt_inet6.h"
  45 #include "opt_bpf.h"
  46 #include "opt_pf.h"
  47
  48 #include <sys/param.h>
  49 #include <sys/bus.h>
  50 #include <sys/conf.h>
  51 #include <sys/endian.h>
  52 #include <sys/fcntl.h>
  53 #include <sys/filio.h>
  54 #include <sys/interrupt.h>
  55 #include <sys/jail.h>
  56 #include <sys/kernel.h>
  57 #include <sys/kthread.h>
  58 #include <sys/lock.h>
  59 #include <sys/mbuf.h>
  60 #include <sys/module.h>
  61 #include <sys/proc.h>
  62 #include <sys/rwlock.h>
  63 #include <sys/smp.h>
  64 #include <sys/socket.h>
  65 #include <sys/sysctl.h>
  66 #include <sys/md5.h>
  67 #include <sys/ucred.h>
  68
  69 #include <net/if.h>
  70 #include <net/if_var.h>
  71 #include <net/vnet.h>
  72 #include <net/route.h>
  73 #include <net/pfil.h>
  74 #include <net/pfvar.h>
  75 #include <net/if_pfsync.h>
  76 #include <net/if_pflog.h>
  77
  78 #include <netinet/in.h>
  79 #include <netinet/ip.h>
  80 #include <netinet/ip_var.h>
  81 #include <netinet6/ip6_var.h>
  82 #include <netinet/ip_icmp.h>
  83
  84 #ifdef INET6
  85 #include <netinet/ip6.h>
  86 #endif /* INET6 */
  87
  88 #ifdef ALTQ
  89 #include <net/altq/altq.h>
  90 #endif
  91
  92 static struct pf_pool   *pf_get_pool(char *, u_int32_t, u_int8_t, u_int32_t,
  93                             u_int8_t, u_int8_t, u_int8_t);
  94
  95 static void              pf_mv_pool(struct pf_palist *, struct pf_palist *);
  96 static void              pf_empty_pool(struct pf_palist *);
  97 static int               pfioctl(struct cdev *, u_long, caddr_t, int,
  98                             struct thread *);
  99 #ifdef ALTQ
 100 static int               pf_begin_altq(u_int32_t *);
 101 static int               pf_rollback_altq(u_int32_t);
 102 static int               pf_commit_altq(u_int32_t);
 103 static int               pf_enable_altq(struct pf_altq *);
 104 static int               pf_disable_altq(struct pf_altq *);
 105 static u_int32_t         pf_qname2qid(char *);
 106 static void              pf_qid_unref(u_int32_t);
 107 #endif /* ALTQ */
 108 static int               pf_begin_rules(u_int32_t *, int, const char *);
 109 static int               pf_rollback_rules(u_int32_t, int, char *);
 110 static int               pf_setup_pfsync_matching(struct pf_ruleset *);
 111 static void              pf_hash_rule(MD5_CTX *, struct pf_rule *);
 112 static void              pf_hash_rule_addr(MD5_CTX *, struct pf_rule_addr *);
 113 static int               pf_commit_rules(u_int32_t, int, char *);
 114 static int               pf_addr_setup(struct pf_ruleset *,
 115                             struct pf_addr_wrap *, sa_family_t);
 116 static void              pf_addr_copyout(struct pf_addr_wrap *);
 117
 118 VNET_DEFINE(struct pf_rule,     pf_default_rule);
 119
 120 #ifdef ALTQ
 121 static VNET_DEFINE(int,         pf_altq_running);
 122 #define V_pf_altq_running       VNET(pf_altq_running)
 123 #endif
 124
 125 #define TAGID_MAX        50000
 126 struct pf_tagname {
 127         TAILQ_ENTRY(pf_tagname) entries;
 128         char                    name[PF_TAG_NAME_SIZE];
 129         uint16_t                tag;
 130         int                     ref;
 131 };
 132
 133 TAILQ_HEAD(pf_tags, pf_tagname);
 134 #define V_pf_tags               VNET(pf_tags)
 135 VNET_DEFINE(struct pf_tags, pf_tags);
 136 #define V_pf_qids               VNET(pf_qids)
 137 VNET_DEFINE(struct pf_tags, pf_qids);
 138 static MALLOC_DEFINE(M_PFTAG, "pf_tag", "pf(4) tag names");
 139 static MALLOC_DEFINE(M_PFALTQ, "pf_altq", "pf(4) altq configuration db");
 140 static MALLOC_DEFINE(M_PFRULE, "pf_rule", "pf(4) rules");
 141
 142 #if (PF_QNAME_SIZE != PF_TAG_NAME_SIZE)
 143 #error PF_QNAME_SIZE must be equal to PF_TAG_NAME_SIZE
 144 #endif
 145
 146 static u_int16_t         tagname2tag(struct pf_tags *, char *);
 147 static u_int16_t         pf_tagname2tag(char *);
 148 static void              tag_unref(struct pf_tags *, u_int16_t);
 149
 150 #define DPFPRINTF(n, x) if (V_pf_status.debug >= (n)) printf x
 151
 152 struct cdev *pf_dev;
 153
 154 /*
 155  * XXX - These are new and need to be checked when moveing to a new version
 156  */
 157 static void              pf_clear_states(void);
 158 static int               pf_clear_tables(void);
 159 static void              pf_clear_srcnodes(struct pf_src_node *);
 160 static void              pf_kill_srcnodes(struct pfioc_src_node_kill *);
 161 static void              pf_tbladdr_copyout(struct pf_addr_wrap *);
 162
 163 /*
 164  * Wrapper functions for pfil(9) hooks
 165  */
 166 #ifdef INET
 167 static int pf_check_in(void *arg, struct mbuf **m, struct ifnet *ifp,
 168     int dir, struct inpcb *inp);
 169 static int pf_check_out(void *arg, struct mbuf **m, struct ifnet *ifp,
 170     int dir, struct inpcb *inp);
 171 #endif
 172 #ifdef INET6
 173 static int pf_check6_in(void *arg, struct mbuf **m, struct ifnet *ifp,
 174     int dir, struct inpcb *inp);
 175 static int pf_check6_out(void *arg, struct mbuf **m, struct ifnet *ifp,
 176     int dir, struct inpcb *inp);
 177 #endif
 178
 179 static int              hook_pf(void);
 180 static int              dehook_pf(void);
 181 static int              shutdown_pf(void);
 182 static int              pf_load(void);
 183 static void             pf_unload(void);
 184
 185 static struct cdevsw pf_cdevsw = {
 186         .d_ioctl =      pfioctl,
 187         .d_name =       PF_NAME,
 188         .d_version =    D_VERSION,
 189 };
 190
 191 static volatile VNET_DEFINE(int, pf_pfil_hooked);
 192 #define V_pf_pfil_hooked        VNET(pf_pfil_hooked)
 193
 194 /*
 195  * We need a flag that is neither hooked nor running to know when
 196  * the VNET is "valid".  We primarily need this to control (global)
 197  * external event, e.g., eventhandlers.
 198  */
 199 VNET_DEFINE(int, pf_vnet_active);
 200 #define V_pf_vnet_active        VNET(pf_vnet_active)
 201
 202 int pf_end_threads;
 203 struct proc *pf_purge_proc;
 204
 205 struct rwlock                   pf_rules_lock;
 206 struct sx                       pf_ioctl_lock;
 207 struct sx                       pf_end_lock;
 208
 209 /* pfsync */
 210 pfsync_state_import_t           *pfsync_state_import_ptr = NULL;
 211 pfsync_insert_state_t           *pfsync_insert_state_ptr = NULL;
 212 pfsync_update_state_t           *pfsync_update_state_ptr = NULL;
 213 pfsync_delete_state_t           *pfsync_delete_state_ptr = NULL;
 214 pfsync_clear_states_t           *pfsync_clear_states_ptr = NULL;
 215 pfsync_defer_t                  *pfsync_defer_ptr = NULL;
 216 /* pflog */
 217 pflog_packet_t                  *pflog_packet_ptr = NULL;
 218
 219 static void
 220 pfattach_vnet(void)
 221 {
 222         u_int32_t *my_timeout = V_pf_default_rule.timeout;
 223
 224         pf_initialize();
 225         pfr_initialize();
 226         pfi_initialize_vnet();
 227         pf_normalize_init();
 228
 229         V_pf_limits[PF_LIMIT_STATES].limit = PFSTATE_HIWAT;
 230         V_pf_limits[PF_LIMIT_SRC_NODES].limit = PFSNODE_HIWAT;
 231
 232         RB_INIT(&V_pf_anchors);
 233         pf_init_ruleset(&pf_main_ruleset);
 234
 235         /* default rule should never be garbage collected */
 236         V_pf_default_rule.entries.tqe_prev = &V_pf_default_rule.entries.tqe_next;
 237 #ifdef PF_DEFAULT_TO_DROP
 238         V_pf_default_rule.action = PF_DROP;
 239 #else
 240         V_pf_default_rule.action = PF_PASS;
 241 #endif
 242         V_pf_default_rule.nr = -1;
 243         V_pf_default_rule.rtableid = -1;
 244
 245         V_pf_default_rule.states_cur = counter_u64_alloc(M_WAITOK);
 246         V_pf_default_rule.states_tot = counter_u64_alloc(M_WAITOK);
 247         V_pf_default_rule.src_nodes = counter_u64_alloc(M_WAITOK);
 248
 249         /* initialize default timeouts */
 250         my_timeout[PFTM_TCP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL;
 251         my_timeout[PFTM_TCP_OPENING] = PFTM_TCP_OPENING_VAL;
 252         my_timeout[PFTM_TCP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL;
 253         my_timeout[PFTM_TCP_CLOSING] = PFTM_TCP_CLOSING_VAL;
 254         my_timeout[PFTM_TCP_FIN_WAIT] = PFTM_TCP_FIN_WAIT_VAL;
 255         my_timeout[PFTM_TCP_CLOSED] = PFTM_TCP_CLOSED_VAL;
 256         my_timeout[PFTM_UDP_FIRST_PACKET] = PFTM_UDP_FIRST_PACKET_VAL;
 257         my_timeout[PFTM_UDP_SINGLE] = PFTM_UDP_SINGLE_VAL;
 258         my_timeout[PFTM_UDP_MULTIPLE] = PFTM_UDP_MULTIPLE_VAL;
 259         my_timeout[PFTM_ICMP_FIRST_PACKET] = PFTM_ICMP_FIRST_PACKET_VAL;
 260         my_timeout[PFTM_ICMP_ERROR_REPLY] = PFTM_ICMP_ERROR_REPLY_VAL;
 261         my_timeout[PFTM_OTHER_FIRST_PACKET] = PFTM_OTHER_FIRST_PACKET_VAL;
 262         my_timeout[PFTM_OTHER_SINGLE] = PFTM_OTHER_SINGLE_VAL;
 263         my_timeout[PFTM_OTHER_MULTIPLE] = PFTM_OTHER_MULTIPLE_VAL;
 264         my_timeout[PFTM_FRAG] = PFTM_FRAG_VAL;
 265         my_timeout[PFTM_INTERVAL] = PFTM_INTERVAL_VAL;
 266         my_timeout[PFTM_SRC_NODE] = PFTM_SRC_NODE_VAL;
 267         my_timeout[PFTM_TS_DIFF] = PFTM_TS_DIFF_VAL;
 268         my_timeout[PFTM_ADAPTIVE_START] = PFSTATE_ADAPT_START;
 269         my_timeout[PFTM_ADAPTIVE_END] = PFSTATE_ADAPT_END;
 270
 271         bzero(&V_pf_status, sizeof(V_pf_status));
 272         V_pf_status.debug = PF_DEBUG_URGENT;
 273
 274         V_pf_pfil_hooked = 0;
 275
 276         /* XXX do our best to avoid a conflict */
 277         V_pf_status.hostid = arc4random();
 278
 279         for (int i = 0; i < PFRES_MAX; i++)
 280                 V_pf_status.counters[i] = counter_u64_alloc(M_WAITOK);
 281         for (int i = 0; i < LCNT_MAX; i++)
 282                 V_pf_status.lcounters[i] = counter_u64_alloc(M_WAITOK);
 283         for (int i = 0; i < FCNT_MAX; i++)
 284                 V_pf_status.fcounters[i] = counter_u64_alloc(M_WAITOK);
 285         for (int i = 0; i < SCNT_MAX; i++)
 286                 V_pf_status.scounters[i] = counter_u64_alloc(M_WAITOK);
 287
 288         if (swi_add(NULL, "pf send", pf_intr, curvnet, SWI_NET,
 289             INTR_MPSAFE, &V_pf_swi_cookie) != 0)
 290                 /* XXXGL: leaked all above. */
 291                 return;
 292 }
 293
 294
 295 static struct pf_pool *
 296 pf_get_pool(char *anchor, u_int32_t ticket, u_int8_t rule_action,
 297     u_int32_t rule_number, u_int8_t r_last, u_int8_t active,
 298     u_int8_t check_ticket)
 299 {
 300         struct pf_ruleset       *ruleset;
 301         struct pf_rule          *rule;
 302         int                      rs_num;
 303
 304         ruleset = pf_find_ruleset(anchor);
 305         if (ruleset == NULL)
 306                 return (NULL);
 307         rs_num = pf_get_ruleset_number(rule_action);
 308         if (rs_num >= PF_RULESET_MAX)
 309                 return (NULL);
 310         if (active) {
 311                 if (check_ticket && ticket !=
 312                     ruleset->rules[rs_num].active.ticket)
 313                         return (NULL);
 314                 if (r_last)
 315                         rule = TAILQ_LAST(ruleset->rules[rs_num].active.ptr,
 316                             pf_rulequeue);
 317                 else
 318                         rule = TAILQ_FIRST(ruleset->rules[rs_num].active.ptr);
 319         } else {
 320                 if (check_ticket && ticket !=
 321                     ruleset->rules[rs_num].inactive.ticket)
 322                         return (NULL);
 323                 if (r_last)
 324                         rule = TAILQ_LAST(ruleset->rules[rs_num].inactive.ptr,
 325                             pf_rulequeue);
 326                 else
 327                         rule = TAILQ_FIRST(ruleset->rules[rs_num].inactive.ptr);
 328         }
 329         if (!r_last) {
 330                 while ((rule != NULL) && (rule->nr != rule_number))
 331                         rule = TAILQ_NEXT(rule, entries);
 332         }
 333         if (rule == NULL)
 334                 return (NULL);
 335
 336         return (&rule->rpool);
 337 }
 338
 339 static void
 340 pf_mv_pool(struct pf_palist *poola, struct pf_palist *poolb)
 341 {
 342         struct pf_pooladdr      *mv_pool_pa;
 343
 344         while ((mv_pool_pa = TAILQ_FIRST(poola)) != NULL) {
 345                 TAILQ_REMOVE(poola, mv_pool_pa, entries);
 346                 TAILQ_INSERT_TAIL(poolb, mv_pool_pa, entries);
 347         }
 348 }
 349
 350 static void
 351 pf_empty_pool(struct pf_palist *poola)
 352 {
 353         struct pf_pooladdr *pa;
 354
 355         while ((pa = TAILQ_FIRST(poola)) != NULL) {
 356                 switch (pa->addr.type) {
 357                 case PF_ADDR_DYNIFTL:
 358                         pfi_dynaddr_remove(pa->addr.p.dyn);
 359                         break;
 360                 case PF_ADDR_TABLE:
 361                         /* XXX: this could be unfinished pooladdr on pabuf */
 362                         if (pa->addr.p.tbl != NULL)
 363                                 pfr_detach_table(pa->addr.p.tbl);
 364                         break;
 365                 }
 366                 if (pa->kif)
 367                         pfi_kif_unref(pa->kif);
 368                 TAILQ_REMOVE(poola, pa, entries);
 369                 free(pa, M_PFRULE);
 370         }
 371 }
 372
 373 static void
 374 pf_unlink_rule(struct pf_rulequeue *rulequeue, struct pf_rule *rule)
 375 {
 376
 377         PF_RULES_WASSERT();
 378
 379         TAILQ_REMOVE(rulequeue, rule, entries);
 380
 381         PF_UNLNKDRULES_LOCK();
 382         rule->rule_flag |= PFRULE_REFS;
 383         TAILQ_INSERT_TAIL(&V_pf_unlinked_rules, rule, entries);
 384         PF_UNLNKDRULES_UNLOCK();
 385 }
 386
 387 void
 388 pf_free_rule(struct pf_rule *rule)
 389 {
 390
 391         PF_RULES_WASSERT();
 392
 393         if (rule->tag)
 394                 tag_unref(&V_pf_tags, rule->tag);
 395         if (rule->match_tag)
 396                 tag_unref(&V_pf_tags, rule->match_tag);
 397 #ifdef ALTQ
 398         if (rule->pqid != rule->qid)
 399                 pf_qid_unref(rule->pqid);
 400         pf_qid_unref(rule->qid);
 401 #endif
 402         switch (rule->src.addr.type) {
 403         case PF_ADDR_DYNIFTL:
 404                 pfi_dynaddr_remove(rule->src.addr.p.dyn);
 405                 break;
 406         case PF_ADDR_TABLE:
 407                 pfr_detach_table(rule->src.addr.p.tbl);
 408                 break;
 409         }
 410         switch (rule->dst.addr.type) {
 411         case PF_ADDR_DYNIFTL:
 412                 pfi_dynaddr_remove(rule->dst.addr.p.dyn);
 413                 break;
 414         case PF_ADDR_TABLE:
 415                 pfr_detach_table(rule->dst.addr.p.tbl);
 416                 break;
 417         }
 418         if (rule->overload_tbl)
 419                 pfr_detach_table(rule->overload_tbl);
 420         if (rule->kif)
 421                 pfi_kif_unref(rule->kif);
 422         pf_anchor_remove(rule);
 423         pf_empty_pool(&rule->rpool.list);
 424         counter_u64_free(rule->states_cur);
 425         counter_u64_free(rule->states_tot);
 426         counter_u64_free(rule->src_nodes);
 427         free(rule, M_PFRULE);
 428 }
 429
 430 static u_int16_t
 431 tagname2tag(struct pf_tags *head, char *tagname)
 432 {
 433         struct pf_tagname       *tag, *p = NULL;
 434         u_int16_t                new_tagid = 1;
 435
 436         PF_RULES_WASSERT();
 437
 438         TAILQ_FOREACH(tag, head, entries)
 439                 if (strcmp(tagname, tag->name) == 0) {
 440                         tag->ref++;
 441                         return (tag->tag);
 442                 }
 443
 444         /*
 445          * to avoid fragmentation, we do a linear search from the beginning
 446          * and take the first free slot we find. if there is none or the list
 447          * is empty, append a new entry at the end.
 448          */
 449
 450         /* new entry */
 451         if (!TAILQ_EMPTY(head))
 452                 for (p = TAILQ_FIRST(head); p != NULL &&
 453                     p->tag == new_tagid; p = TAILQ_NEXT(p, entries))
 454                         new_tagid = p->tag + 1;
 455
 456         if (new_tagid > TAGID_MAX)
 457                 return (0);
 458
 459         /* allocate and fill new struct pf_tagname */
 460         tag = malloc(sizeof(*tag), M_PFTAG, M_NOWAIT|M_ZERO);
 461         if (tag == NULL)
 462                 return (0);
 463         strlcpy(tag->name, tagname, sizeof(tag->name));
 464         tag->tag = new_tagid;
 465         tag->ref++;
 466
 467         if (p != NULL)  /* insert new entry before p */
 468                 TAILQ_INSERT_BEFORE(p, tag, entries);
 469         else    /* either list empty or no free slot in between */
 470                 TAILQ_INSERT_TAIL(head, tag, entries);
 471
 472         return (tag->tag);
 473 }
 474
 475 static void
 476 tag_unref(struct pf_tags *head, u_int16_t tag)
 477 {
 478         struct pf_tagname       *p, *next;
 479
 480         PF_RULES_WASSERT();
 481
 482         for (p = TAILQ_FIRST(head); p != NULL; p = next) {
 483                 next = TAILQ_NEXT(p, entries);
 484                 if (tag == p->tag) {
 485                         if (--p->ref == 0) {
 486                                 TAILQ_REMOVE(head, p, entries);
 487                                 free(p, M_PFTAG);
 488                         }
 489                         break;
 490                 }
 491         }
 492 }
 493
 494 static u_int16_t
 495 pf_tagname2tag(char *tagname)
 496 {
 497         return (tagname2tag(&V_pf_tags, tagname));
 498 }
 499
 500 #ifdef ALTQ
 501 static u_int32_t
 502 pf_qname2qid(char *qname)
 503 {
 504         return ((u_int32_t)tagname2tag(&V_pf_qids, qname));
 505 }
 506
 507 static void
 508 pf_qid_unref(u_int32_t qid)
 509 {
 510         tag_unref(&V_pf_qids, (u_int16_t)qid);
 511 }
 512
 513 static int
 514 pf_begin_altq(u_int32_t *ticket)
 515 {
 516         struct pf_altq  *altq;
 517         int              error = 0;
 518
 519         PF_RULES_WASSERT();
 520
 521         /* Purge the old altq list */
 522         while ((altq = TAILQ_FIRST(V_pf_altqs_inactive)) != NULL) {
 523                 TAILQ_REMOVE(V_pf_altqs_inactive, altq, entries);
 524                 if (altq->qname[0] == 0 &&
 525                     (altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) {
 526                         /* detach and destroy the discipline */
 527                         error = altq_remove(altq);
 528                 } else
 529                         pf_qid_unref(altq->qid);
 530                 free(altq, M_PFALTQ);
 531         }
 532         if (error)
 533                 return (error);
 534         *ticket = ++V_ticket_altqs_inactive;
 535         V_altqs_inactive_open = 1;
 536         return (0);
 537 }
 538
 539 static int
 540 pf_rollback_altq(u_int32_t ticket)
 541 {
 542         struct pf_altq  *altq;
 543         int              error = 0;
 544
 545         PF_RULES_WASSERT();
 546
 547         if (!V_altqs_inactive_open || ticket != V_ticket_altqs_inactive)
 548                 return (0);
 549         /* Purge the old altq list */
 550         while ((altq = TAILQ_FIRST(V_pf_altqs_inactive)) != NULL) {
 551                 TAILQ_REMOVE(V_pf_altqs_inactive, altq, entries);
 552                 if (altq->qname[0] == 0 &&
 553                    (altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) {
 554                         /* detach and destroy the discipline */
 555                         error = altq_remove(altq);
 556                 } else
 557                         pf_qid_unref(altq->qid);
 558                 free(altq, M_PFALTQ);
 559         }
 560         V_altqs_inactive_open = 0;
 561         return (error);
 562 }
 563
 564 static int
 565 pf_commit_altq(u_int32_t ticket)
 566 {
 567         struct pf_altqqueue     *old_altqs;
 568         struct pf_altq          *altq;
 569         int                      err, error = 0;
 570
 571         PF_RULES_WASSERT();
 572
 573         if (!V_altqs_inactive_open || ticket != V_ticket_altqs_inactive)
 574                 return (EBUSY);
 575
 576         /* swap altqs, keep the old. */
 577         old_altqs = V_pf_altqs_active;
 578         V_pf_altqs_active = V_pf_altqs_inactive;
 579         V_pf_altqs_inactive = old_altqs;
 580         V_ticket_altqs_active = V_ticket_altqs_inactive;
 581
 582         /* Attach new disciplines */
 583         TAILQ_FOREACH(altq, V_pf_altqs_active, entries) {
 584         if (altq->qname[0] == 0 &&
 585            (altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) {
 586                         /* attach the discipline */
 587                         error = altq_pfattach(altq);
 588                         if (error == 0 && V_pf_altq_running)
 589                                 error = pf_enable_altq(altq);
 590                         if (error != 0)
 591                                 return (error);
 592                 }
 593         }
 594
 595         /* Purge the old altq list */
 596         while ((altq = TAILQ_FIRST(V_pf_altqs_inactive)) != NULL) {
 597                 TAILQ_REMOVE(V_pf_altqs_inactive, altq, entries);
 598                 if (altq->qname[0] == 0 &&
 599                     (altq->local_flags & PFALTQ_FLAG_IF_REMOVED) == 0) {
 600                         /* detach and destroy the discipline */
 601                         if (V_pf_altq_running)
 602                                 error = pf_disable_altq(altq);
 603                         err = altq_pfdetach(altq);
 604                         if (err != 0 && error == 0)
 605                                 error = err;
 606                         err = altq_remove(altq);
 607                         if (err != 0 && error == 0)
 608                                 error = err;
 609                 } else
 610                         pf_qid_unref(altq->qid);
 611                 free(altq, M_PFALTQ);
 612         }
 613
 614         V_altqs_inactive_open = 0;
 615         return (error);
 616 }
 617
 618 static int
 619 pf_enable_altq(struct pf_altq *altq)
 620 {
 621         struct ifnet            *ifp;
 622         struct tb_profile        tb;
 623         int                      error = 0;
 624
 625         if ((ifp = ifunit(altq->ifname)) == NULL)
 626                 return (EINVAL);
 627
 628         if (ifp->if_snd.altq_type != ALTQT_NONE)
 629                 error = altq_enable(&ifp->if_snd);
 630
 631         /* set tokenbucket regulator */
 632         if (error == 0 && ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) {
 633                 tb.rate = altq->ifbandwidth;
 634                 tb.depth = altq->tbrsize;
 635                 error = tbr_set(&ifp->if_snd, &tb);
 636         }
 637
 638         return (error);
 639 }
 640
 641 static int
 642 pf_disable_altq(struct pf_altq *altq)
 643 {
 644         struct ifnet            *ifp;
 645         struct tb_profile        tb;
 646         int                      error;
 647
 648         if ((ifp = ifunit(altq->ifname)) == NULL)
 649                 return (EINVAL);
 650
 651         /*
 652          * when the discipline is no longer referenced, it was overridden
 653          * by a new one.  if so, just return.
 654          */
 655         if (altq->altq_disc != ifp->if_snd.altq_disc)
 656                 return (0);
 657
 658         error = altq_disable(&ifp->if_snd);
 659
 660         if (error == 0) {
 661                 /* clear tokenbucket regulator */
 662                 tb.rate = 0;
 663                 error = tbr_set(&ifp->if_snd, &tb);
 664         }
 665
 666         return (error);
 667 }
 668
 669 void
 670 pf_altq_ifnet_event(struct ifnet *ifp, int remove)
 671 {
 672         struct ifnet    *ifp1;
 673         struct pf_altq  *a1, *a2, *a3;
 674         u_int32_t        ticket;
 675         int              error = 0;
 676
 677         /* Interrupt userland queue modifications */
 678         if (V_altqs_inactive_open)
 679                 pf_rollback_altq(V_ticket_altqs_inactive);
 680
 681         /* Start new altq ruleset */
 682         if (pf_begin_altq(&ticket))
 683                 return;
 684
 685         /* Copy the current active set */
 686         TAILQ_FOREACH(a1, V_pf_altqs_active, entries) {
 687                 a2 = malloc(sizeof(*a2), M_PFALTQ, M_NOWAIT);
 688                 if (a2 == NULL) {
 689                         error = ENOMEM;
 690                         break;
 691                 }
 692                 bcopy(a1, a2, sizeof(struct pf_altq));
 693
 694                 if (a2->qname[0] != 0) {
 695                         if ((a2->qid = pf_qname2qid(a2->qname)) == 0) {
 696                                 error = EBUSY;
 697                                 free(a2, M_PFALTQ);
 698                                 break;
 699                         }
 700                         a2->altq_disc = NULL;
 701                         TAILQ_FOREACH(a3, V_pf_altqs_inactive, entries) {
 702                                 if (strncmp(a3->ifname, a2->ifname,
 703                                     IFNAMSIZ) == 0 && a3->qname[0] == 0) {
 704                                         a2->altq_disc = a3->altq_disc;
 705                                         break;
 706                                 }
 707                         }
 708                 }
 709                 /* Deactivate the interface in question */
 710                 a2->local_flags &= ~PFALTQ_FLAG_IF_REMOVED;
 711                 if ((ifp1 = ifunit(a2->ifname)) == NULL ||
 712                     (remove && ifp1 == ifp)) {
 713                         a2->local_flags |= PFALTQ_FLAG_IF_REMOVED;
 714                 } else {
 715                         error = altq_add(a2);
 716
 717                         if (ticket != V_ticket_altqs_inactive)
 718                                 error = EBUSY;
 719
 720                         if (error) {
 721                                 free(a2, M_PFALTQ);
 722                                 break;
 723                         }
 724                 }
 725
 726                 TAILQ_INSERT_TAIL(V_pf_altqs_inactive, a2, entries);
 727         }
 728
 729         if (error != 0)
 730                 pf_rollback_altq(ticket);
 731         else
 732                 pf_commit_altq(ticket);
 733 }
 734 #endif /* ALTQ */
 735
 736 static int
 737 pf_begin_rules(u_int32_t *ticket, int rs_num, const char *anchor)
 738 {
 739         struct pf_ruleset       *rs;
 740         struct pf_rule          *rule;
 741
 742         PF_RULES_WASSERT();
 743
 744         if (rs_num < 0 || rs_num >= PF_RULESET_MAX)
 745                 return (EINVAL);
 746         rs = pf_find_or_create_ruleset(anchor);
 747         if (rs == NULL)
 748                 return (EINVAL);
 749         while ((rule = TAILQ_FIRST(rs->rules[rs_num].inactive.ptr)) != NULL) {
 750                 pf_unlink_rule(rs->rules[rs_num].inactive.ptr, rule);
 751                 rs->rules[rs_num].inactive.rcount--;
 752         }
 753         *ticket = ++rs->rules[rs_num].inactive.ticket;
 754         rs->rules[rs_num].inactive.open = 1;
 755         return (0);
 756 }
 757
 758 static int
 759 pf_rollback_rules(u_int32_t ticket, int rs_num, char *anchor)
 760 {
 761         struct pf_ruleset       *rs;
 762         struct pf_rule          *rule;
 763
 764         PF_RULES_WASSERT();
 765
 766         if (rs_num < 0 || rs_num >= PF_RULESET_MAX)
 767                 return (EINVAL);
 768         rs = pf_find_ruleset(anchor);
 769         if (rs == NULL || !rs->rules[rs_num].inactive.open ||
 770             rs->rules[rs_num].inactive.ticket != ticket)
 771                 return (0);
 772         while ((rule = TAILQ_FIRST(rs->rules[rs_num].inactive.ptr)) != NULL) {
 773                 pf_unlink_rule(rs->rules[rs_num].inactive.ptr, rule);
 774                 rs->rules[rs_num].inactive.rcount--;
 775         }
 776         rs->rules[rs_num].inactive.open = 0;
 777         return (0);
 778 }
 779
 780 #define PF_MD5_UPD(st, elm)                                             \
 781                 MD5Update(ctx, (u_int8_t *) &(st)->elm, sizeof((st)->elm))
 782
 783 #define PF_MD5_UPD_STR(st, elm)                                         \
 784                 MD5Update(ctx, (u_int8_t *) (st)->elm, strlen((st)->elm))
 785
 786 #define PF_MD5_UPD_HTONL(st, elm, stor) do {                            \
 787                 (stor) = htonl((st)->elm);                              \
 788                 MD5Update(ctx, (u_int8_t *) &(stor), sizeof(u_int32_t));\
 789 } while (0)
 790
 791 #define PF_MD5_UPD_HTONS(st, elm, stor) do {                            \
 792                 (stor) = htons((st)->elm);                              \
 793                 MD5Update(ctx, (u_int8_t *) &(stor), sizeof(u_int16_t));\
 794 } while (0)
 795
 796 static void
 797 pf_hash_rule_addr(MD5_CTX *ctx, struct pf_rule_addr *pfr)
 798 {
 799         PF_MD5_UPD(pfr, addr.type);
 800         switch (pfr->addr.type) {
 801                 case PF_ADDR_DYNIFTL:
 802                         PF_MD5_UPD(pfr, addr.v.ifname);
 803                         PF_MD5_UPD(pfr, addr.iflags);
 804                         break;
 805                 case PF_ADDR_TABLE:
 806                         PF_MD5_UPD(pfr, addr.v.tblname);
 807                         break;
 808                 case PF_ADDR_ADDRMASK:
 809                         /* XXX ignore af? */
 810                         PF_MD5_UPD(pfr, addr.v.a.addr.addr32);
 811                         PF_MD5_UPD(pfr, addr.v.a.mask.addr32);
 812                         break;
 813         }
 814
 815         PF_MD5_UPD(pfr, port[0]);
 816         PF_MD5_UPD(pfr, port[1]);
 817         PF_MD5_UPD(pfr, neg);
 818         PF_MD5_UPD(pfr, port_op);
 819 }
 820
 821 static void
 822 pf_hash_rule(MD5_CTX *ctx, struct pf_rule *rule)
 823 {
 824         u_int16_t x;
 825         u_int32_t y;
 826
 827         pf_hash_rule_addr(ctx, &rule->src);
 828         pf_hash_rule_addr(ctx, &rule->dst);
 829         PF_MD5_UPD_STR(rule, label);
 830         PF_MD5_UPD_STR(rule, ifname);
 831         PF_MD5_UPD_STR(rule, match_tagname);
 832         PF_MD5_UPD_HTONS(rule, match_tag, x); /* dup? */
 833         PF_MD5_UPD_HTONL(rule, os_fingerprint, y);
 834         PF_MD5_UPD_HTONL(rule, prob, y);
 835         PF_MD5_UPD_HTONL(rule, uid.uid[0], y);
 836         PF_MD5_UPD_HTONL(rule, uid.uid[1], y);
 837         PF_MD5_UPD(rule, uid.op);
 838         PF_MD5_UPD_HTONL(rule, gid.gid[0], y);
 839         PF_MD5_UPD_HTONL(rule, gid.gid[1], y);
 840         PF_MD5_UPD(rule, gid.op);
 841         PF_MD5_UPD_HTONL(rule, rule_flag, y);
 842         PF_MD5_UPD(rule, action);
 843         PF_MD5_UPD(rule, direction);
 844         PF_MD5_UPD(rule, af);
 845         PF_MD5_UPD(rule, quick);
 846         PF_MD5_UPD(rule, ifnot);
 847         PF_MD5_UPD(rule, match_tag_not);
 848         PF_MD5_UPD(rule, natpass);
 849         PF_MD5_UPD(rule, keep_state);
 850         PF_MD5_UPD(rule, proto);
 851         PF_MD5_UPD(rule, type);
 852         PF_MD5_UPD(rule, code);
 853         PF_MD5_UPD(rule, flags);
 854         PF_MD5_UPD(rule, flagset);
 855         PF_MD5_UPD(rule, allow_opts);
 856         PF_MD5_UPD(rule, rt);
 857         PF_MD5_UPD(rule, tos);
 858 }
 859
 860 static int
 861 pf_commit_rules(u_int32_t ticket, int rs_num, char *anchor)
 862 {
 863         struct pf_ruleset       *rs;
 864         struct pf_rule          *rule, **old_array;
 865         struct pf_rulequeue     *old_rules;
 866         int                      error;
 867         u_int32_t                old_rcount;
 868
 869         PF_RULES_WASSERT();
 870
 871         if (rs_num < 0 || rs_num >= PF_RULESET_MAX)
 872                 return (EINVAL);
 873         rs = pf_find_ruleset(anchor);
 874         if (rs == NULL || !rs->rules[rs_num].inactive.open ||
 875             ticket != rs->rules[rs_num].inactive.ticket)
 876                 return (EBUSY);
 877
 878         /* Calculate checksum for the main ruleset */
 879         if (rs == &pf_main_ruleset) {
 880                 error = pf_setup_pfsync_matching(rs);
 881                 if (error != 0)
 882                         return (error);
 883         }
 884
 885         /* Swap rules, keep the old. */
 886         old_rules = rs->rules[rs_num].active.ptr;
 887         old_rcount = rs->rules[rs_num].active.rcount;
 888         old_array = rs->rules[rs_num].active.ptr_array;
 889
 890         rs->rules[rs_num].active.ptr =
 891             rs->rules[rs_num].inactive.ptr;
 892         rs->rules[rs_num].active.ptr_array =
 893             rs->rules[rs_num].inactive.ptr_array;
 894         rs->rules[rs_num].active.rcount =
 895             rs->rules[rs_num].inactive.rcount;
 896         rs->rules[rs_num].inactive.ptr = old_rules;
 897         rs->rules[rs_num].inactive.ptr_array = old_array;
 898         rs->rules[rs_num].inactive.rcount = old_rcount;
 899
 900         rs->rules[rs_num].active.ticket =
 901             rs->rules[rs_num].inactive.ticket;
 902         pf_calc_skip_steps(rs->rules[rs_num].active.ptr);
 903
 904
 905         /* Purge the old rule list. */
 906         while ((rule = TAILQ_FIRST(old_rules)) != NULL)
 907                 pf_unlink_rule(old_rules, rule);
 908         if (rs->rules[rs_num].inactive.ptr_array)
 909                 free(rs->rules[rs_num].inactive.ptr_array, M_TEMP);
 910         rs->rules[rs_num].inactive.ptr_array = NULL;
 911         rs->rules[rs_num].inactive.rcount = 0;
 912         rs->rules[rs_num].inactive.open = 0;
 913         pf_remove_if_empty_ruleset(rs);
 914
 915         return (0);
 916 }
 917
 918 static int
 919 pf_setup_pfsync_matching(struct pf_ruleset *rs)
 920 {
 921         MD5_CTX                  ctx;
 922         struct pf_rule          *rule;
 923         int                      rs_cnt;
 924         u_int8_t                 digest[PF_MD5_DIGEST_LENGTH];
 925
 926         MD5Init(&ctx);
 927         for (rs_cnt = 0; rs_cnt < PF_RULESET_MAX; rs_cnt++) {
 928                 /* XXX PF_RULESET_SCRUB as well? */
 929                 if (rs_cnt == PF_RULESET_SCRUB)
 930                         continue;
 931
 932                 if (rs->rules[rs_cnt].inactive.ptr_array)
 933                         free(rs->rules[rs_cnt].inactive.ptr_array, M_TEMP);
 934                 rs->rules[rs_cnt].inactive.ptr_array = NULL;
 935
 936                 if (rs->rules[rs_cnt].inactive.rcount) {
 937                         rs->rules[rs_cnt].inactive.ptr_array =
 938                             malloc(sizeof(caddr_t) *
 939                             rs->rules[rs_cnt].inactive.rcount,
 940                             M_TEMP, M_NOWAIT);
 941
 942                         if (!rs->rules[rs_cnt].inactive.ptr_array)
 943                                 return (ENOMEM);
 944                 }
 945
 946                 TAILQ_FOREACH(rule, rs->rules[rs_cnt].inactive.ptr,
 947                     entries) {
 948                         pf_hash_rule(&ctx, rule);
 949                         (rs->rules[rs_cnt].inactive.ptr_array)[rule->nr] = rule;
 950                 }
 951         }
 952
 953         MD5Final(digest, &ctx);
 954         memcpy(V_pf_status.pf_chksum, digest, sizeof(V_pf_status.pf_chksum));
 955         return (0);
 956 }
 957
 958 static int
 959 pf_addr_setup(struct pf_ruleset *ruleset, struct pf_addr_wrap *addr,
 960     sa_family_t af)
 961 {
 962         int error = 0;
 963
 964         switch (addr->type) {
 965         case PF_ADDR_TABLE:
 966                 addr->p.tbl = pfr_attach_table(ruleset, addr->v.tblname);
 967                 if (addr->p.tbl == NULL)
 968                         error = ENOMEM;
 969                 break;
 970         case PF_ADDR_DYNIFTL:
 971                 error = pfi_dynaddr_setup(addr, af);
 972                 break;
 973         }
 974
 975         return (error);
 976 }
 977
 978 static void
 979 pf_addr_copyout(struct pf_addr_wrap *addr)
 980 {
 981
 982         switch (addr->type) {
 983         case PF_ADDR_DYNIFTL:
 984                 pfi_dynaddr_copyout(addr);
 985                 break;
 986         case PF_ADDR_TABLE:
 987                 pf_tbladdr_copyout(addr);
 988                 break;
 989         }
 990 }
 991
 992 static int
 993 pfioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flags, struct thread *td)
 994 {
 995         int                      error = 0;
 996
 997         /* XXX keep in sync with switch() below */
 998         if (securelevel_gt(td->td_ucred, 2))
 999                 switch (cmd) {
1000                 case DIOCGETRULES:
1001                 case DIOCGETRULE:
1002                 case DIOCGETADDRS:
1003                 case DIOCGETADDR:
1004                 case DIOCGETSTATE:
1005                 case DIOCSETSTATUSIF:
1006                 case DIOCGETSTATUS:
1007                 case DIOCCLRSTATUS:
1008                 case DIOCNATLOOK:
1009                 case DIOCSETDEBUG:
1010                 case DIOCGETSTATES:
1011                 case DIOCGETTIMEOUT:
1012                 case DIOCCLRRULECTRS:
1013                 case DIOCGETLIMIT:
1014                 case DIOCGETALTQS:
1015                 case DIOCGETALTQ:
1016                 case DIOCGETQSTATS:
1017                 case DIOCGETRULESETS:
1018                 case DIOCGETRULESET:
1019                 case DIOCRGETTABLES:
1020                 case DIOCRGETTSTATS:
1021                 case DIOCRCLRTSTATS:
1022                 case DIOCRCLRADDRS:
1023                 case DIOCRADDADDRS:
1024                 case DIOCRDELADDRS:
1025                 case DIOCRSETADDRS:
1026                 case DIOCRGETADDRS:
1027                 case DIOCRGETASTATS:
1028                 case DIOCRCLRASTATS:
1029                 case DIOCRTSTADDRS:
1030                 case DIOCOSFPGET:
1031                 case DIOCGETSRCNODES:
1032                 case DIOCCLRSRCNODES:
1033                 case DIOCIGETIFACES:
1034                 case DIOCGIFSPEED:
1035                 case DIOCSETIFFLAG:
1036                 case DIOCCLRIFFLAG:
1037                         break;
1038                 case DIOCRCLRTABLES:
1039                 case DIOCRADDTABLES:
1040                 case DIOCRDELTABLES:
1041                 case DIOCRSETTFLAGS:
1042                         if (((struct pfioc_table *)addr)->pfrio_flags &
1043                             PFR_FLAG_DUMMY)
1044                                 break; /* dummy operation ok */
1045                         return (EPERM);
1046                 default:
1047                         return (EPERM);
1048                 }
1049
1050         if (!(flags & FWRITE))
1051                 switch (cmd) {
1052                 case DIOCGETRULES:
1053                 case DIOCGETADDRS:
1054                 case DIOCGETADDR:
1055                 case DIOCGETSTATE:
1056                 case DIOCGETSTATUS:
1057                 case DIOCGETSTATES:
1058                 case DIOCGETTIMEOUT:
1059                 case DIOCGETLIMIT:
1060                 case DIOCGETALTQS:
1061                 case DIOCGETALTQ:
1062                 case DIOCGETQSTATS:
1063                 case DIOCGETRULESETS:
1064                 case DIOCGETRULESET:
1065                 case DIOCNATLOOK:
1066                 case DIOCRGETTABLES:
1067                 case DIOCRGETTSTATS:
1068                 case DIOCRGETADDRS:
1069                 case DIOCRGETASTATS:
1070                 case DIOCRTSTADDRS:
1071                 case DIOCOSFPGET:
1072                 case DIOCGETSRCNODES:
1073                 case DIOCIGETIFACES:
1074                 case DIOCGIFSPEED:
1075                         break;
1076                 case DIOCRCLRTABLES:
1077                 case DIOCRADDTABLES:
1078                 case DIOCRDELTABLES:
1079                 case DIOCRCLRTSTATS:
1080                 case DIOCRCLRADDRS:
1081                 case DIOCRADDADDRS:
1082                 case DIOCRDELADDRS:
1083                 case DIOCRSETADDRS:
1084                 case DIOCRSETTFLAGS:
1085                         if (((struct pfioc_table *)addr)->pfrio_flags &
1086                             PFR_FLAG_DUMMY) {
1087                                 flags |= FWRITE; /* need write lock for dummy */
1088                                 break; /* dummy operation ok */
1089                         }
1090                         return (EACCES);
1091                 case DIOCGETRULE:
1092                         if (((struct pfioc_rule *)addr)->action ==
1093                             PF_GET_CLR_CNTR)
1094                                 return (EACCES);
1095                         break;
1096                 default:
1097                         return (EACCES);
1098                 }
1099
1100         CURVNET_SET(TD_TO_VNET(td));
1101
1102         switch (cmd) {
1103         case DIOCSTART:
1104                 sx_xlock(&pf_ioctl_lock);
1105                 if (V_pf_status.running)
1106                         error = EEXIST;
1107                 else {
1108                         int cpu;
1109
1110                         error = hook_pf();
1111                         if (error) {
1112                                 DPFPRINTF(PF_DEBUG_MISC,
1113                                     ("pf: pfil registration failed\n"));
1114                                 break;
1115                         }
1116                         V_pf_status.running = 1;
1117                         V_pf_status.since = time_second;
1118
1119                         CPU_FOREACH(cpu)
1120                                 V_pf_stateid[cpu] = time_second;
1121
1122                         DPFPRINTF(PF_DEBUG_MISC, ("pf: started\n"));
1123                 }
1124                 break;
1125
1126         case DIOCSTOP:
1127                 sx_xlock(&pf_ioctl_lock);
1128                 if (!V_pf_status.running)
1129                         error = ENOENT;
1130                 else {
1131                         V_pf_status.running = 0;
1132                         error = dehook_pf();
1133                         if (error) {
1134                                 V_pf_status.running = 1;
1135                                 DPFPRINTF(PF_DEBUG_MISC,
1136                                     ("pf: pfil unregistration failed\n"));
1137                         }
1138                         V_pf_status.since = time_second;
1139                         DPFPRINTF(PF_DEBUG_MISC, ("pf: stopped\n"));
1140                 }
1141                 break;
1142
1143         case DIOCADDRULE: {
1144                 struct pfioc_rule       *pr = (struct pfioc_rule *)addr;
1145                 struct pf_ruleset       *ruleset;
1146                 struct pf_rule          *rule, *tail;
1147                 struct pf_pooladdr      *pa;
1148                 struct pfi_kif          *kif = NULL;
1149                 int                      rs_num;
1150
1151                 if (pr->rule.return_icmp >> 8 > ICMP_MAXTYPE) {
1152                         error = EINVAL;
1153                         break;
1154                 }
1155 #ifndef INET
1156                 if (pr->rule.af == AF_INET) {
1157                         error = EAFNOSUPPORT;
1158                         break;
1159                 }
1160 #endif /* INET */
1161 #ifndef INET6
1162                 if (pr->rule.af == AF_INET6) {
1163                         error = EAFNOSUPPORT;
1164                         break;
1165                 }
1166 #endif /* INET6 */
1167
1168                 rule = malloc(sizeof(*rule), M_PFRULE, M_WAITOK);
1169                 bcopy(&pr->rule, rule, sizeof(struct pf_rule));
1170                 if (rule->ifname[0])
1171                         kif = malloc(sizeof(*kif), PFI_MTYPE, M_WAITOK);
1172                 rule->states_cur = counter_u64_alloc(M_WAITOK);
1173                 rule->states_tot = counter_u64_alloc(M_WAITOK);
1174                 rule->src_nodes = counter_u64_alloc(M_WAITOK);
1175                 rule->cuid = td->td_ucred->cr_ruid;
1176                 rule->cpid = td->td_proc ? td->td_proc->p_pid : 0;
1177                 TAILQ_INIT(&rule->rpool.list);
1178
1179 #define ERROUT(x)       { error = (x); goto DIOCADDRULE_error; }
1180
1181                 PF_RULES_WLOCK();
1182                 pr->anchor[sizeof(pr->anchor) - 1] = 0;
1183                 ruleset = pf_find_ruleset(pr->anchor);
1184                 if (ruleset == NULL)
1185                         ERROUT(EINVAL);
1186                 rs_num = pf_get_ruleset_number(pr->rule.action);
1187                 if (rs_num >= PF_RULESET_MAX)
1188                         ERROUT(EINVAL);
1189                 if (pr->ticket != ruleset->rules[rs_num].inactive.ticket) {
1190                         DPFPRINTF(PF_DEBUG_MISC,
1191                             ("ticket: %d != [%d]%d\n", pr->ticket, rs_num,
1192                             ruleset->rules[rs_num].inactive.ticket));
1193                         ERROUT(EBUSY);
1194                 }
1195                 if (pr->pool_ticket != V_ticket_pabuf) {
1196                         DPFPRINTF(PF_DEBUG_MISC,
1197                             ("pool_ticket: %d != %d\n", pr->pool_ticket,
1198                             V_ticket_pabuf));
1199                         ERROUT(EBUSY);
1200                 }
1201
1202                 tail = TAILQ_LAST(ruleset->rules[rs_num].inactive.ptr,
1203                     pf_rulequeue);
1204                 if (tail)
1205                         rule->nr = tail->nr + 1;
1206                 else
1207                         rule->nr = 0;
1208                 if (rule->ifname[0]) {
1209                         rule->kif = pfi_kif_attach(kif, rule->ifname);
1210                         pfi_kif_ref(rule->kif);
1211                 } else
1212                         rule->kif = NULL;
1213
1214                 if (rule->rtableid > 0 && rule->rtableid >= rt_numfibs)
1215                         error = EBUSY;
1216
1217 #ifdef ALTQ
1218                 /* set queue IDs */
1219                 if (rule->qname[0] != 0) {
1220                         if ((rule->qid = pf_qname2qid(rule->qname)) == 0)
1221                                 error = EBUSY;
1222                         else if (rule->pqname[0] != 0) {
1223                                 if ((rule->pqid =
1224                                     pf_qname2qid(rule->pqname)) == 0)
1225                                         error = EBUSY;
1226                         } else
1227                                 rule->pqid = rule->qid;
1228                 }
1229 #endif
1230                 if (rule->tagname[0])
1231                         if ((rule->tag = pf_tagname2tag(rule->tagname)) == 0)
1232                                 error = EBUSY;
1233                 if (rule->match_tagname[0])
1234                         if ((rule->match_tag =
1235                             pf_tagname2tag(rule->match_tagname)) == 0)
1236                                 error = EBUSY;
1237                 if (rule->rt && !rule->direction)
1238                         error = EINVAL;
1239                 if (!rule->log)
1240                         rule->logif = 0;
1241                 if (rule->logif >= PFLOGIFS_MAX)
1242                         error = EINVAL;
1243                 if (pf_addr_setup(ruleset, &rule->src.addr, rule->af))
1244                         error = ENOMEM;
1245                 if (pf_addr_setup(ruleset, &rule->dst.addr, rule->af))
1246                         error = ENOMEM;
1247                 if (pf_anchor_setup(rule, ruleset, pr->anchor_call))
1248                         error = EINVAL;
1249                 if (rule->scrub_flags & PFSTATE_SETPRIO &&
1250                     (rule->set_prio[0] > PF_PRIO_MAX ||
1251                     rule->set_prio[1] > PF_PRIO_MAX))
1252                         error = EINVAL;
1253                 TAILQ_FOREACH(pa, &V_pf_pabuf, entries)
1254                         if (pa->addr.type == PF_ADDR_TABLE) {
1255                                 pa->addr.p.tbl = pfr_attach_table(ruleset,
1256                                     pa->addr.v.tblname);
1257                                 if (pa->addr.p.tbl == NULL)
1258                                         error = ENOMEM;
1259                         }
1260
1261                 rule->overload_tbl = NULL;
1262                 if (rule->overload_tblname[0]) {
1263                         if ((rule->overload_tbl = pfr_attach_table(ruleset,
1264                             rule->overload_tblname)) == NULL)
1265                                 error = EINVAL;
1266                         else
1267                                 rule->overload_tbl->pfrkt_flags |=
1268                                     PFR_TFLAG_ACTIVE;
1269                 }
1270
1271                 pf_mv_pool(&V_pf_pabuf, &rule->rpool.list);
1272                 if (((((rule->action == PF_NAT) || (rule->action == PF_RDR) ||
1273                     (rule->action == PF_BINAT)) && rule->anchor == NULL) ||
1274                     (rule->rt > PF_NOPFROUTE)) &&
1275                     (TAILQ_FIRST(&rule->rpool.list) == NULL))
1276                         error = EINVAL;
1277
1278                 if (error) {
1279                         pf_free_rule(rule);
1280                         PF_RULES_WUNLOCK();
1281                         break;
1282                 }
1283
1284                 rule->rpool.cur = TAILQ_FIRST(&rule->rpool.list);
1285                 rule->evaluations = rule->packets[0] = rule->packets[1] =
1286                     rule->bytes[0] = rule->bytes[1] = 0;
1287                 TAILQ_INSERT_TAIL(ruleset->rules[rs_num].inactive.ptr,
1288                     rule, entries);
1289                 ruleset->rules[rs_num].inactive.rcount++;
1290                 PF_RULES_WUNLOCK();
1291                 break;
1292
1293 #undef ERROUT
1294 DIOCADDRULE_error:
1295                 PF_RULES_WUNLOCK();
1296                 counter_u64_free(rule->states_cur);
1297                 counter_u64_free(rule->states_tot);
1298                 counter_u64_free(rule->src_nodes);
1299                 free(rule, M_PFRULE);
1300                 if (kif)
1301                         free(kif, PFI_MTYPE);
1302                 break;
1303         }
1304
1305         case DIOCGETRULES: {
1306                 struct pfioc_rule       *pr = (struct pfioc_rule *)addr;
1307                 struct pf_ruleset       *ruleset;
1308                 struct pf_rule          *tail;
1309                 int                      rs_num;
1310
1311                 PF_RULES_WLOCK();
1312                 pr->anchor[sizeof(pr->anchor) - 1] = 0;
1313                 ruleset = pf_find_ruleset(pr->anchor);
1314                 if (ruleset == NULL) {
1315                         PF_RULES_WUNLOCK();
1316                         error = EINVAL;
1317                         break;
1318                 }
1319                 rs_num = pf_get_ruleset_number(pr->rule.action);
1320                 if (rs_num >= PF_RULESET_MAX) {
1321                         PF_RULES_WUNLOCK();
1322                         error = EINVAL;
1323                         break;
1324                 }
1325                 tail = TAILQ_LAST(ruleset->rules[rs_num].active.ptr,
1326                     pf_rulequeue);
1327                 if (tail)
1328                         pr->nr = tail->nr + 1;
1329                 else
1330                         pr->nr = 0;
1331                 pr->ticket = ruleset->rules[rs_num].active.ticket;
1332                 PF_RULES_WUNLOCK();
1333                 break;
1334         }
1335
1336         case DIOCGETRULE: {
1337                 struct pfioc_rule       *pr = (struct pfioc_rule *)addr;
1338                 struct pf_ruleset       *ruleset;
1339                 struct pf_rule          *rule;
1340                 int                      rs_num, i;
1341
1342                 PF_RULES_WLOCK();
1343                 pr->anchor[sizeof(pr->anchor) - 1] = 0;
1344                 ruleset = pf_find_ruleset(pr->anchor);
1345                 if (ruleset == NULL) {
1346                         PF_RULES_WUNLOCK();
1347                         error = EINVAL;
1348                         break;
1349                 }
1350                 rs_num = pf_get_ruleset_number(pr->rule.action);
1351                 if (rs_num >= PF_RULESET_MAX) {
1352                         PF_RULES_WUNLOCK();
1353                         error = EINVAL;
1354                         break;
1355                 }
1356                 if (pr->ticket != ruleset->rules[rs_num].active.ticket) {
1357                         PF_RULES_WUNLOCK();
1358                         error = EBUSY;
1359                         break;
1360                 }
1361                 rule = TAILQ_FIRST(ruleset->rules[rs_num].active.ptr);
1362                 while ((rule != NULL) && (rule->nr != pr->nr))
1363                         rule = TAILQ_NEXT(rule, entries);
1364                 if (rule == NULL) {
1365                         PF_RULES_WUNLOCK();
1366                         error = EBUSY;
1367                         break;
1368                 }
1369                 bcopy(rule, &pr->rule, sizeof(struct pf_rule));
1370                 pr->rule.u_states_cur = counter_u64_fetch(rule->states_cur);
1371                 pr->rule.u_states_tot = counter_u64_fetch(rule->states_tot);
1372                 pr->rule.u_src_nodes = counter_u64_fetch(rule->src_nodes);
1373                 if (pf_anchor_copyout(ruleset, rule, pr)) {
1374                         PF_RULES_WUNLOCK();
1375                         error = EBUSY;
1376                         break;
1377                 }
1378                 pf_addr_copyout(&pr->rule.src.addr);
1379                 pf_addr_copyout(&pr->rule.dst.addr);
1380                 for (i = 0; i < PF_SKIP_COUNT; ++i)
1381                         if (rule->skip[i].ptr == NULL)
1382                                 pr->rule.skip[i].nr = -1;
1383                         else
1384                                 pr->rule.skip[i].nr =
1385                                     rule->skip[i].ptr->nr;
1386
1387                 if (pr->action == PF_GET_CLR_CNTR) {
1388                         rule->evaluations = 0;
1389                         rule->packets[0] = rule->packets[1] = 0;
1390                         rule->bytes[0] = rule->bytes[1] = 0;
1391                         counter_u64_zero(rule->states_tot);
1392                 }
1393                 PF_RULES_WUNLOCK();
1394                 break;
1395         }
1396
1397         case DIOCCHANGERULE: {
1398                 struct pfioc_rule       *pcr = (struct pfioc_rule *)addr;
1399                 struct pf_ruleset       *ruleset;
1400                 struct pf_rule          *oldrule = NULL, *newrule = NULL;
1401                 struct pfi_kif          *kif = NULL;
1402                 struct pf_pooladdr      *pa;
1403                 u_int32_t                nr = 0;
1404                 int                      rs_num;
1405
1406                 if (pcr->action < PF_CHANGE_ADD_HEAD ||
1407                     pcr->action > PF_CHANGE_GET_TICKET) {
1408                         error = EINVAL;
1409                         break;
1410                 }
1411                 if (pcr->rule.return_icmp >> 8 > ICMP_MAXTYPE) {
1412                         error = EINVAL;
1413                         break;
1414                 }
1415
1416                 if (pcr->action != PF_CHANGE_REMOVE) {
1417 #ifndef INET
1418                         if (pcr->rule.af == AF_INET) {
1419                                 error = EAFNOSUPPORT;
1420                                 break;
1421                         }
1422 #endif /* INET */
1423 #ifndef INET6
1424                         if (pcr->rule.af == AF_INET6) {
1425                                 error = EAFNOSUPPORT;
1426                                 break;
1427                         }
1428 #endif /* INET6 */
1429                         newrule = malloc(sizeof(*newrule), M_PFRULE, M_WAITOK);
1430                         bcopy(&pcr->rule, newrule, sizeof(struct pf_rule));
1431                         if (newrule->ifname[0])
1432                                 kif = malloc(sizeof(*kif), PFI_MTYPE, M_WAITOK);
1433                         newrule->states_cur = counter_u64_alloc(M_WAITOK);
1434                         newrule->states_tot = counter_u64_alloc(M_WAITOK);
1435                         newrule->src_nodes = counter_u64_alloc(M_WAITOK);
1436                         newrule->cuid = td->td_ucred->cr_ruid;
1437                         newrule->cpid = td->td_proc ? td->td_proc->p_pid : 0;
1438                         TAILQ_INIT(&newrule->rpool.list);
1439                 }
1440
1441 #define ERROUT(x)       { error = (x); goto DIOCCHANGERULE_error; }
1442
1443                 PF_RULES_WLOCK();
1444                 if (!(pcr->action == PF_CHANGE_REMOVE ||
1445                     pcr->action == PF_CHANGE_GET_TICKET) &&
1446                     pcr->pool_ticket != V_ticket_pabuf)
1447                         ERROUT(EBUSY);
1448
1449                 ruleset = pf_find_ruleset(pcr->anchor);
1450                 if (ruleset == NULL)
1451                         ERROUT(EINVAL);
1452
1453                 rs_num = pf_get_ruleset_number(pcr->rule.action);
1454                 if (rs_num >= PF_RULESET_MAX)
1455                         ERROUT(EINVAL);
1456
1457                 if (pcr->action == PF_CHANGE_GET_TICKET) {
1458                         pcr->ticket = ++ruleset->rules[rs_num].active.ticket;
1459                         ERROUT(0);
1460                 } else if (pcr->ticket !=
1461                             ruleset->rules[rs_num].active.ticket)
1462                                 ERROUT(EINVAL);
1463
1464                 if (pcr->action != PF_CHANGE_REMOVE) {
1465                         if (newrule->ifname[0]) {
1466                                 newrule->kif = pfi_kif_attach(kif,
1467                                     newrule->ifname);
1468                                 pfi_kif_ref(newrule->kif);
1469                         } else
1470                                 newrule->kif = NULL;
1471
1472                         if (newrule->rtableid > 0 &&
1473                             newrule->rtableid >= rt_numfibs)
1474                                 error = EBUSY;
1475
1476 #ifdef ALTQ
1477                         /* set queue IDs */
1478                         if (newrule->qname[0] != 0) {
1479                                 if ((newrule->qid =
1480                                     pf_qname2qid(newrule->qname)) == 0)
1481                                         error = EBUSY;
1482                                 else if (newrule->pqname[0] != 0) {
1483                                         if ((newrule->pqid =
1484                                             pf_qname2qid(newrule->pqname)) == 0)
1485                                                 error = EBUSY;
1486                                 } else
1487                                         newrule->pqid = newrule->qid;
1488                         }
1489 #endif /* ALTQ */
1490                         if (newrule->tagname[0])
1491                                 if ((newrule->tag =
1492                                     pf_tagname2tag(newrule->tagname)) == 0)
1493                                         error = EBUSY;
1494                         if (newrule->match_tagname[0])
1495                                 if ((newrule->match_tag = pf_tagname2tag(
1496                                     newrule->match_tagname)) == 0)
1497                                         error = EBUSY;
1498                         if (newrule->rt && !newrule->direction)
1499                                 error = EINVAL;
1500                         if (!newrule->log)
1501                                 newrule->logif = 0;
1502                         if (newrule->logif >= PFLOGIFS_MAX)
1503                                 error = EINVAL;
1504                         if (pf_addr_setup(ruleset, &newrule->src.addr, newrule->af))
1505                                 error = ENOMEM;
1506                         if (pf_addr_setup(ruleset, &newrule->dst.addr, newrule->af))
1507                                 error = ENOMEM;
1508                         if (pf_anchor_setup(newrule, ruleset, pcr->anchor_call))
1509                                 error = EINVAL;
1510                         TAILQ_FOREACH(pa, &V_pf_pabuf, entries)
1511                                 if (pa->addr.type == PF_ADDR_TABLE) {
1512                                         pa->addr.p.tbl =
1513                                             pfr_attach_table(ruleset,
1514                                             pa->addr.v.tblname);
1515                                         if (pa->addr.p.tbl == NULL)
1516                                                 error = ENOMEM;
1517                                 }
1518
1519                         newrule->overload_tbl = NULL;
1520                         if (newrule->overload_tblname[0]) {
1521                                 if ((newrule->overload_tbl = pfr_attach_table(
1522                                     ruleset, newrule->overload_tblname)) ==
1523                                     NULL)
1524                                         error = EINVAL;
1525                                 else
1526                                         newrule->overload_tbl->pfrkt_flags |=
1527                                             PFR_TFLAG_ACTIVE;
1528                         }
1529
1530                         pf_mv_pool(&V_pf_pabuf, &newrule->rpool.list);
1531                         if (((((newrule->action == PF_NAT) ||
1532                             (newrule->action == PF_RDR) ||
1533                             (newrule->action == PF_BINAT) ||
1534                             (newrule->rt > PF_NOPFROUTE)) &&
1535                             !newrule->anchor)) &&
1536                             (TAILQ_FIRST(&newrule->rpool.list) == NULL))
1537                                 error = EINVAL;
1538
1539                         if (error) {
1540                                 pf_free_rule(newrule);
1541                                 PF_RULES_WUNLOCK();
1542                                 break;
1543                         }
1544
1545                         newrule->rpool.cur = TAILQ_FIRST(&newrule->rpool.list);
1546                         newrule->evaluations = 0;
1547                         newrule->packets[0] = newrule->packets[1] = 0;
1548                         newrule->bytes[0] = newrule->bytes[1] = 0;
1549                 }
1550                 pf_empty_pool(&V_pf_pabuf);
1551
1552                 if (pcr->action == PF_CHANGE_ADD_HEAD)
1553                         oldrule = TAILQ_FIRST(
1554                             ruleset->rules[rs_num].active.ptr);
1555                 else if (pcr->action == PF_CHANGE_ADD_TAIL)
1556                         oldrule = TAILQ_LAST(
1557                             ruleset->rules[rs_num].active.ptr, pf_rulequeue);
1558                 else {
1559                         oldrule = TAILQ_FIRST(
1560                             ruleset->rules[rs_num].active.ptr);
1561                         while ((oldrule != NULL) && (oldrule->nr != pcr->nr))
1562                                 oldrule = TAILQ_NEXT(oldrule, entries);
1563                         if (oldrule == NULL) {
1564                                 if (newrule != NULL)
1565                                         pf_free_rule(newrule);
1566                                 PF_RULES_WUNLOCK();
1567                                 error = EINVAL;
1568                                 break;
1569                         }
1570                 }
1571
1572                 if (pcr->action == PF_CHANGE_REMOVE) {
1573                         pf_unlink_rule(ruleset->rules[rs_num].active.ptr,
1574                             oldrule);
1575                         ruleset->rules[rs_num].active.rcount--;
1576                 } else {
1577                         if (oldrule == NULL)
1578                                 TAILQ_INSERT_TAIL(
1579                                     ruleset->rules[rs_num].active.ptr,
1580                                     newrule, entries);
1581                         else if (pcr->action == PF_CHANGE_ADD_HEAD ||
1582                             pcr->action == PF_CHANGE_ADD_BEFORE)
1583                                 TAILQ_INSERT_BEFORE(oldrule, newrule, entries);
1584                         else
1585                                 TAILQ_INSERT_AFTER(
1586                                     ruleset->rules[rs_num].active.ptr,
1587                                     oldrule, newrule, entries);
1588                         ruleset->rules[rs_num].active.rcount++;
1589                 }
1590
1591                 nr = 0;
1592                 TAILQ_FOREACH(oldrule,
1593                     ruleset->rules[rs_num].active.ptr, entries)
1594                         oldrule->nr = nr++;
1595
1596                 ruleset->rules[rs_num].active.ticket++;
1597
1598                 pf_calc_skip_steps(ruleset->rules[rs_num].active.ptr);
1599                 pf_remove_if_empty_ruleset(ruleset);
1600
1601                 PF_RULES_WUNLOCK();
1602                 break;
1603
1604 #undef ERROUT
1605 DIOCCHANGERULE_error:
1606                 PF_RULES_WUNLOCK();
1607                 if (newrule != NULL) {
1608                         counter_u64_free(newrule->states_cur);
1609                         counter_u64_free(newrule->states_tot);
1610                         counter_u64_free(newrule->src_nodes);
1611                         free(newrule, M_PFRULE);
1612                 }
1613                 if (kif != NULL)
1614                         free(kif, PFI_MTYPE);
1615                 break;
1616         }
1617
1618         case DIOCCLRSTATES: {
1619                 struct pf_state         *s;
1620                 struct pfioc_state_kill *psk = (struct pfioc_state_kill *)addr;
1621                 u_int                    i, killed = 0;
1622
1623                 for (i = 0; i <= pf_hashmask; i++) {
1624                         struct pf_idhash *ih = &V_pf_idhash[i];
1625
1626 relock_DIOCCLRSTATES:
1627                         PF_HASHROW_LOCK(ih);
1628                         LIST_FOREACH(s, &ih->states, entry)
1629                                 if (!psk->psk_ifname[0] ||
1630                                     !strcmp(psk->psk_ifname,
1631                                     s->kif->pfik_name)) {
1632                                         /*
1633                                          * Don't send out individual
1634                                          * delete messages.
1635                                          */
1636                                         s->state_flags |= PFSTATE_NOSYNC;
1637                                         pf_unlink_state(s, PF_ENTER_LOCKED);
1638                                         killed++;
1639                                         goto relock_DIOCCLRSTATES;
1640                                 }
1641                         PF_HASHROW_UNLOCK(ih);
1642                 }
1643                 psk->psk_killed = killed;
1644                 if (pfsync_clear_states_ptr != NULL)
1645                         pfsync_clear_states_ptr(V_pf_status.hostid, psk->psk_ifname);
1646                 break;
1647         }
1648
1649         case DIOCKILLSTATES: {
1650                 struct pf_state         *s;
1651                 struct pf_state_key     *sk;
1652                 struct pf_addr          *srcaddr, *dstaddr;
1653                 u_int16_t                srcport, dstport;
1654                 struct pfioc_state_kill *psk = (struct pfioc_state_kill *)addr;
1655                 u_int                    i, killed = 0;
1656
1657                 if (psk->psk_pfcmp.id) {
1658                         if (psk->psk_pfcmp.creatorid == 0)
1659                                 psk->psk_pfcmp.creatorid = V_pf_status.hostid;
1660                         if ((s = pf_find_state_byid(psk->psk_pfcmp.id,
1661                             psk->psk_pfcmp.creatorid))) {
1662                                 pf_unlink_state(s, PF_ENTER_LOCKED);
1663                                 psk->psk_killed = 1;
1664                         }
1665                         break;
1666                 }
1667
1668                 for (i = 0; i <= pf_hashmask; i++) {
1669                         struct pf_idhash *ih = &V_pf_idhash[i];
1670
1671 relock_DIOCKILLSTATES:
1672                         PF_HASHROW_LOCK(ih);
1673                         LIST_FOREACH(s, &ih->states, entry) {
1674                                 sk = s->key[PF_SK_WIRE];
1675                                 if (s->direction == PF_OUT) {
1676                                         srcaddr = &sk->addr[1];
1677                                         dstaddr = &sk->addr[0];
1678                                         srcport = sk->port[1];
1679                                         dstport = sk->port[0];
1680                                 } else {
1681                                         srcaddr = &sk->addr[0];
1682                                         dstaddr = &sk->addr[1];
1683                                         srcport = sk->port[0];
1684                                         dstport = sk->port[1];
1685                                 }
1686
1687                                 if ((!psk->psk_af || sk->af == psk->psk_af)
1688                                     && (!psk->psk_proto || psk->psk_proto ==
1689                                     sk->proto) &&
1690                                     PF_MATCHA(psk->psk_src.neg,
1691                                     &psk->psk_src.addr.v.a.addr,
1692                                     &psk->psk_src.addr.v.a.mask,
1693                                     srcaddr, sk->af) &&
1694                                     PF_MATCHA(psk->psk_dst.neg,
1695                                     &psk->psk_dst.addr.v.a.addr,
1696                                     &psk->psk_dst.addr.v.a.mask,
1697                                     dstaddr, sk->af) &&
1698                                     (psk->psk_src.port_op == 0 ||
1699                                     pf_match_port(psk->psk_src.port_op,
1700                                     psk->psk_src.port[0], psk->psk_src.port[1],
1701                                     srcport)) &&
1702                                     (psk->psk_dst.port_op == 0 ||
1703                                     pf_match_port(psk->psk_dst.port_op,
1704                                     psk->psk_dst.port[0], psk->psk_dst.port[1],
1705                                     dstport)) &&
1706                                     (!psk->psk_label[0] ||
1707                                     (s->rule.ptr->label[0] &&
1708                                     !strcmp(psk->psk_label,
1709                                     s->rule.ptr->label))) &&
1710                                     (!psk->psk_ifname[0] ||
1711                                     !strcmp(psk->psk_ifname,
1712                                     s->kif->pfik_name))) {
1713                                         pf_unlink_state(s, PF_ENTER_LOCKED);
1714                                         killed++;
1715                                         goto relock_DIOCKILLSTATES;
1716                                 }
1717                         }
1718                         PF_HASHROW_UNLOCK(ih);
1719                 }
1720                 psk->psk_killed = killed;
1721                 break;
1722         }
1723
1724         case DIOCADDSTATE: {
1725                 struct pfioc_state      *ps = (struct pfioc_state *)addr;
1726                 struct pfsync_state     *sp = &ps->state;
1727
1728                 if (sp->timeout >= PFTM_MAX) {
1729                         error = EINVAL;
1730                         break;
1731                 }
1732                 if (pfsync_state_import_ptr != NULL) {
1733                         PF_RULES_RLOCK();
1734                         error = pfsync_state_import_ptr(sp, PFSYNC_SI_IOCTL);
1735                         PF_RULES_RUNLOCK();
1736                 } else
1737                         error = EOPNOTSUPP;
1738                 break;
1739         }
1740
1741         case DIOCGETSTATE: {
1742                 struct pfioc_state      *ps = (struct pfioc_state *)addr;
1743                 struct pf_state         *s;
1744
1745                 s = pf_find_state_byid(ps->state.id, ps->state.creatorid);
1746                 if (s == NULL) {
1747                         error = ENOENT;
1748                         break;
1749                 }
1750
1751                 pfsync_state_export(&ps->state, s);
1752                 PF_STATE_UNLOCK(s);
1753                 break;
1754         }
1755
1756         case DIOCGETSTATES: {
1757                 struct pfioc_states     *ps = (struct pfioc_states *)addr;
1758                 struct pf_state         *s;
1759                 struct pfsync_state     *pstore, *p;
1760                 int i, nr;
1761
1762                 if (ps->ps_len == 0) {
1763                         nr = uma_zone_get_cur(V_pf_state_z);
1764                         ps->ps_len = sizeof(struct pfsync_state) * nr;
1765                         break;
1766                 }
1767
1768                 p = pstore = malloc(ps->ps_len, M_TEMP, M_WAITOK);
1769                 nr = 0;
1770
1771                 for (i = 0; i <= pf_hashmask; i++) {
1772                         struct pf_idhash *ih = &V_pf_idhash[i];
1773
1774                         PF_HASHROW_LOCK(ih);
1775                         LIST_FOREACH(s, &ih->states, entry) {
1776
1777                                 if (s->timeout == PFTM_UNLINKED)
1778                                         continue;
1779
1780                                 if ((nr+1) * sizeof(*p) > ps->ps_len) {
1781                                         PF_HASHROW_UNLOCK(ih);
1782                                         goto DIOCGETSTATES_full;
1783                                 }
1784                                 pfsync_state_export(p, s);
1785                                 p++;
1786                                 nr++;
1787                         }
1788                         PF_HASHROW_UNLOCK(ih);
1789                 }
1790 DIOCGETSTATES_full:
1791                 error = copyout(pstore, ps->ps_states,
1792                     sizeof(struct pfsync_state) * nr);
1793                 if (error) {
1794                         free(pstore, M_TEMP);
1795                         break;
1796                 }
1797                 ps->ps_len = sizeof(struct pfsync_state) * nr;
1798                 free(pstore, M_TEMP);
1799
1800                 break;
1801         }
1802
1803         case DIOCGETSTATUS: {
1804                 struct pf_status *s = (struct pf_status *)addr;
1805
1806                 PF_RULES_RLOCK();
1807                 s->running = V_pf_status.running;
1808                 s->since   = V_pf_status.since;
1809                 s->debug   = V_pf_status.debug;
1810                 s->hostid  = V_pf_status.hostid;
1811                 s->states  = V_pf_status.states;
1812                 s->src_nodes = V_pf_status.src_nodes;
1813
1814                 for (int i = 0; i < PFRES_MAX; i++)
1815                         s->counters[i] =
1816                             counter_u64_fetch(V_pf_status.counters[i]);
1817                 for (int i = 0; i < LCNT_MAX; i++)
1818                         s->lcounters[i] =
1819                             counter_u64_fetch(V_pf_status.lcounters[i]);
1820                 for (int i = 0; i < FCNT_MAX; i++)
1821                         s->fcounters[i] =
1822                             counter_u64_fetch(V_pf_status.fcounters[i]);
1823                 for (int i = 0; i < SCNT_MAX; i++)
1824                         s->scounters[i] =
1825                             counter_u64_fetch(V_pf_status.scounters[i]);
1826
1827                 bcopy(V_pf_status.ifname, s->ifname, IFNAMSIZ);
1828                 bcopy(V_pf_status.pf_chksum, s->pf_chksum,
1829                     PF_MD5_DIGEST_LENGTH);
1830
1831                 pfi_update_status(s->ifname, s);
1832                 PF_RULES_RUNLOCK();
1833                 break;
1834         }
1835
1836         case DIOCSETSTATUSIF: {
1837                 struct pfioc_if *pi = (struct pfioc_if *)addr;
1838
1839                 if (pi->ifname[0] == 0) {
1840                         bzero(V_pf_status.ifname, IFNAMSIZ);
1841                         break;
1842                 }
1843                 PF_RULES_WLOCK();
1844                 strlcpy(V_pf_status.ifname, pi->ifname, IFNAMSIZ);
1845                 PF_RULES_WUNLOCK();
1846                 break;
1847         }
1848
1849         case DIOCCLRSTATUS: {
1850                 PF_RULES_WLOCK();
1851                 for (int i = 0; i < PFRES_MAX; i++)
1852                         counter_u64_zero(V_pf_status.counters[i]);
1853                 for (int i = 0; i < FCNT_MAX; i++)
1854                         counter_u64_zero(V_pf_status.fcounters[i]);
1855                 for (int i = 0; i < SCNT_MAX; i++)
1856                         counter_u64_zero(V_pf_status.scounters[i]);
1857                 for (int i = 0; i < LCNT_MAX; i++)
1858                         counter_u64_zero(V_pf_status.lcounters[i]);
1859                 V_pf_status.since = time_second;
1860                 if (*V_pf_status.ifname)
1861                         pfi_update_status(V_pf_status.ifname, NULL);
1862                 PF_RULES_WUNLOCK();
1863                 break;
1864         }
1865
1866         case DIOCNATLOOK: {
1867                 struct pfioc_natlook    *pnl = (struct pfioc_natlook *)addr;
1868                 struct pf_state_key     *sk;
1869                 struct pf_state         *state;
1870                 struct pf_state_key_cmp  key;
1871                 int                      m = 0, direction = pnl->direction;
1872                 int                      sidx, didx;
1873
1874                 /* NATLOOK src and dst are reversed, so reverse sidx/didx */
1875                 sidx = (direction == PF_IN) ? 1 : 0;
1876                 didx = (direction == PF_IN) ? 0 : 1;
1877
1878                 if (!pnl->proto ||
1879                     PF_AZERO(&pnl->saddr, pnl->af) ||
1880                     PF_AZERO(&pnl->daddr, pnl->af) ||
1881                     ((pnl->proto == IPPROTO_TCP ||
1882                     pnl->proto == IPPROTO_UDP) &&
1883                     (!pnl->dport || !pnl->sport)))
1884                         error = EINVAL;
1885                 else {
1886                         bzero(&key, sizeof(key));
1887                         key.af = pnl->af;
1888                         key.proto = pnl->proto;
1889                         PF_ACPY(&key.addr[sidx], &pnl->saddr, pnl->af);
1890                         key.port[sidx] = pnl->sport;
1891                         PF_ACPY(&key.addr[didx], &pnl->daddr, pnl->af);
1892                         key.port[didx] = pnl->dport;
1893
1894                         state = pf_find_state_all(&key, direction, &m);
1895
1896                         if (m > 1)
1897                                 error = E2BIG;  /* more than one state */
1898                         else if (state != NULL) {
1899                                 /* XXXGL: not locked read */
1900                                 sk = state->key[sidx];
1901                                 PF_ACPY(&pnl->rsaddr, &sk->addr[sidx], sk->af);
1902                                 pnl->rsport = sk->port[sidx];
1903                                 PF_ACPY(&pnl->rdaddr, &sk->addr[didx], sk->af);
1904                                 pnl->rdport = sk->port[didx];
1905                         } else
1906                                 error = ENOENT;
1907                 }
1908                 break;
1909         }
1910
1911         case DIOCSETTIMEOUT: {
1912                 struct pfioc_tm *pt = (struct pfioc_tm *)addr;
1913                 int              old;
1914
1915                 if (pt->timeout < 0 || pt->timeout >= PFTM_MAX ||
1916                     pt->seconds < 0) {
1917                         error = EINVAL;
1918                         break;
1919                 }
1920                 PF_RULES_WLOCK();
1921                 old = V_pf_default_rule.timeout[pt->timeout];
1922                 if (pt->timeout == PFTM_INTERVAL && pt->seconds == 0)
1923                         pt->seconds = 1;
1924                 V_pf_default_rule.timeout[pt->timeout] = pt->seconds;
1925                 if (pt->timeout == PFTM_INTERVAL && pt->seconds < old)
1926                         wakeup(pf_purge_thread);
1927                 pt->seconds = old;
1928                 PF_RULES_WUNLOCK();
1929                 break;
1930         }
1931
1932         case DIOCGETTIMEOUT: {
1933                 struct pfioc_tm *pt = (struct pfioc_tm *)addr;
1934
1935                 if (pt->timeout < 0 || pt->timeout >= PFTM_MAX) {
1936                         error = EINVAL;
1937                         break;
1938                 }
1939                 PF_RULES_RLOCK();
1940                 pt->seconds = V_pf_default_rule.timeout[pt->timeout];
1941                 PF_RULES_RUNLOCK();
1942                 break;
1943         }
1944
1945         case DIOCGETLIMIT: {
1946                 struct pfioc_limit      *pl = (struct pfioc_limit *)addr;
1947
1948                 if (pl->index < 0 || pl->index >= PF_LIMIT_MAX) {
1949                         error = EINVAL;
1950                         break;
1951                 }
1952                 PF_RULES_RLOCK();
1953                 pl->limit = V_pf_limits[pl->index].limit;
1954                 PF_RULES_RUNLOCK();
1955                 break;
1956         }
1957
1958         case DIOCSETLIMIT: {
1959                 struct pfioc_limit      *pl = (struct pfioc_limit *)addr;
1960                 int                      old_limit;
1961
1962                 PF_RULES_WLOCK();
1963                 if (pl->index < 0 || pl->index >= PF_LIMIT_MAX ||
1964                     V_pf_limits[pl->index].zone == NULL) {
1965                         PF_RULES_WUNLOCK();
1966                         error = EINVAL;
1967                         break;
1968                 }
1969                 uma_zone_set_max(V_pf_limits[pl->index].zone, pl->limit);
1970                 old_limit = V_pf_limits[pl->index].limit;
1971                 V_pf_limits[pl->index].limit = pl->limit;
1972                 pl->limit = old_limit;
1973                 PF_RULES_WUNLOCK();
1974                 break;
1975         }
1976
1977         case DIOCSETDEBUG: {
1978                 u_int32_t       *level = (u_int32_t *)addr;
1979
1980                 PF_RULES_WLOCK();
1981                 V_pf_status.debug = *level;
1982                 PF_RULES_WUNLOCK();
1983                 break;
1984         }
1985
1986         case DIOCCLRRULECTRS: {
1987                 /* obsoleted by DIOCGETRULE with action=PF_GET_CLR_CNTR */
1988                 struct pf_ruleset       *ruleset = &pf_main_ruleset;
1989                 struct pf_rule          *rule;
1990
1991                 PF_RULES_WLOCK();
1992                 TAILQ_FOREACH(rule,
1993                     ruleset->rules[PF_RULESET_FILTER].active.ptr, entries) {
1994                         rule->evaluations = 0;
1995                         rule->packets[0] = rule->packets[1] = 0;
1996                         rule->bytes[0] = rule->bytes[1] = 0;
1997                 }
1998                 PF_RULES_WUNLOCK();
1999                 break;
2000         }
2001
2002         case DIOCGIFSPEED: {
2003                 struct pf_ifspeed       *psp = (struct pf_ifspeed *)addr;
2004                 struct pf_ifspeed       ps;
2005                 struct ifnet            *ifp;
2006
2007                 if (psp->ifname[0] != 0) {
2008                         /* Can we completely trust user-land? */
2009                         strlcpy(ps.ifname, psp->ifname, IFNAMSIZ);
2010                         ifp = ifunit(ps.ifname);
2011                         if (ifp != NULL)
2012                                 psp->baudrate = ifp->if_baudrate;
2013                         else
2014                                 error = EINVAL;
2015                 } else
2016                         error = EINVAL;
2017                 break;
2018         }
2019
2020 #ifdef ALTQ
2021         case DIOCSTARTALTQ: {
2022                 struct pf_altq          *altq;
2023
2024                 PF_RULES_WLOCK();
2025                 /* enable all altq interfaces on active list */
2026                 TAILQ_FOREACH(altq, V_pf_altqs_active, entries) {
2027                         if (altq->qname[0] == 0 && (altq->local_flags &
2028                             PFALTQ_FLAG_IF_REMOVED) == 0) {
2029                                 error = pf_enable_altq(altq);
2030                                 if (error != 0)
2031                                         break;
2032                         }
2033                 }
2034                 if (error == 0)
2035                         V_pf_altq_running = 1;
2036                 PF_RULES_WUNLOCK();
2037                 DPFPRINTF(PF_DEBUG_MISC, ("altq: started\n"));
2038                 break;
2039         }
2040
2041         case DIOCSTOPALTQ: {
2042                 struct pf_altq          *altq;
2043
2044                 PF_RULES_WLOCK();
2045                 /* disable all altq interfaces on active list */
2046                 TAILQ_FOREACH(altq, V_pf_altqs_active, entries) {
2047                         if (altq->qname[0] == 0 && (altq->local_flags &
2048                             PFALTQ_FLAG_IF_REMOVED) == 0) {
2049                                 error = pf_disable_altq(altq);
2050                                 if (error != 0)
2051                                         break;
2052                         }
2053                 }
2054                 if (error == 0)
2055                         V_pf_altq_running = 0;
2056                 PF_RULES_WUNLOCK();
2057                 DPFPRINTF(PF_DEBUG_MISC, ("altq: stopped\n"));
2058                 break;
2059         }
2060
2061         case DIOCADDALTQ: {
2062                 struct pfioc_altq       *pa = (struct pfioc_altq *)addr;
2063                 struct pf_altq          *altq, *a;
2064                 struct ifnet            *ifp;
2065
2066                 altq = malloc(sizeof(*altq), M_PFALTQ, M_WAITOK);
2067                 bcopy(&pa->altq, altq, sizeof(struct pf_altq));
2068                 altq->local_flags = 0;
2069
2070                 PF_RULES_WLOCK();
2071                 if (pa->ticket != V_ticket_altqs_inactive) {
2072                         PF_RULES_WUNLOCK();
2073                         free(altq, M_PFALTQ);
2074                         error = EBUSY;
2075                         break;
2076                 }
2077
2078                 /*
2079                  * if this is for a queue, find the discipline and
2080                  * copy the necessary fields
2081                  */
2082                 if (altq->qname[0] != 0) {
2083                         if ((altq->qid = pf_qname2qid(altq->qname)) == 0) {
2084                                 PF_RULES_WUNLOCK();
2085                                 error = EBUSY;
2086                                 free(altq, M_PFALTQ);
2087                                 break;
2088                         }
2089                         altq->altq_disc = NULL;
2090                         TAILQ_FOREACH(a, V_pf_altqs_inactive, entries) {
2091                                 if (strncmp(a->ifname, altq->ifname,
2092                                     IFNAMSIZ) == 0 && a->qname[0] == 0) {
2093                                         altq->altq_disc = a->altq_disc;
2094                                         break;
2095                                 }
2096                         }
2097                 }
2098
2099                 if ((ifp = ifunit(altq->ifname)) == NULL)
2100                         altq->local_flags |= PFALTQ_FLAG_IF_REMOVED;
2101                 else
2102                         error = altq_add(altq);
2103
2104                 if (error) {
2105                         PF_RULES_WUNLOCK();
2106                         free(altq, M_PFALTQ);
2107                         break;
2108                 }
2109
2110                 TAILQ_INSERT_TAIL(V_pf_altqs_inactive, altq, entries);
2111                 bcopy(altq, &pa->altq, sizeof(struct pf_altq));
2112                 PF_RULES_WUNLOCK();
2113                 break;
2114         }
2115
2116         case DIOCGETALTQS: {
2117                 struct pfioc_altq       *pa = (struct pfioc_altq *)addr;
2118                 struct pf_altq          *altq;
2119
2120                 PF_RULES_RLOCK();
2121                 pa->nr = 0;
2122                 TAILQ_FOREACH(altq, V_pf_altqs_active, entries)
2123                         pa->nr++;
2124                 pa->ticket = V_ticket_altqs_active;
2125                 PF_RULES_RUNLOCK();
2126                 break;
2127         }
2128
2129         case DIOCGETALTQ: {
2130                 struct pfioc_altq       *pa = (struct pfioc_altq *)addr;
2131                 struct pf_altq          *altq;
2132                 u_int32_t                nr;
2133
2134                 PF_RULES_RLOCK();
2135                 if (pa->ticket != V_ticket_altqs_active) {
2136                         PF_RULES_RUNLOCK();
2137                         error = EBUSY;
2138                         break;
2139                 }
2140                 nr = 0;
2141                 altq = TAILQ_FIRST(V_pf_altqs_active);
2142                 while ((altq != NULL) && (nr < pa->nr)) {
2143                         altq = TAILQ_NEXT(altq, entries);
2144                         nr++;
2145                 }
2146                 if (altq == NULL) {
2147                         PF_RULES_RUNLOCK();
2148                         error = EBUSY;
2149                         break;
2150                 }
2151                 bcopy(altq, &pa->altq, sizeof(struct pf_altq));
2152                 PF_RULES_RUNLOCK();
2153                 break;
2154         }
2155
2156         case DIOCCHANGEALTQ:
2157                 /* CHANGEALTQ not supported yet! */
2158                 error = ENODEV;
2159                 break;
2160
2161         case DIOCGETQSTATS: {
2162                 struct pfioc_qstats     *pq = (struct pfioc_qstats *)addr;
2163                 struct pf_altq          *altq;
2164                 u_int32_t                nr;
2165                 int                      nbytes;
2166
2167                 PF_RULES_RLOCK();
2168                 if (pq->ticket != V_ticket_altqs_active) {
2169                         PF_RULES_RUNLOCK();
2170                         error = EBUSY;
2171                         break;
2172                 }
2173                 nbytes = pq->nbytes;
2174                 nr = 0;
2175                 altq = TAILQ_FIRST(V_pf_altqs_active);
2176                 while ((altq != NULL) && (nr < pq->nr)) {
2177                         altq = TAILQ_NEXT(altq, entries);
2178                         nr++;
2179                 }
2180                 if (altq == NULL) {
2181                         PF_RULES_RUNLOCK();
2182                         error = EBUSY;
2183                         break;
2184                 }
2185
2186                 if ((altq->local_flags & PFALTQ_FLAG_IF_REMOVED) != 0) {
2187                         PF_RULES_RUNLOCK();
2188                         error = ENXIO;
2189                         break;
2190                 }
2191                 PF_RULES_RUNLOCK();
2192                 error = altq_getqstats(altq, pq->buf, &nbytes);
2193                 if (error == 0) {
2194                         pq->scheduler = altq->scheduler;
2195                         pq->nbytes = nbytes;
2196                 }
2197                 break;
2198         }
2199 #endif /* ALTQ */
2200
2201         case DIOCBEGINADDRS: {
2202                 struct pfioc_pooladdr   *pp = (struct pfioc_pooladdr *)addr;
2203
2204                 PF_RULES_WLOCK();
2205                 pf_empty_pool(&V_pf_pabuf);
2206                 pp->ticket = ++V_ticket_pabuf;
2207                 PF_RULES_WUNLOCK();
2208                 break;
2209         }
2210
2211         case DIOCADDADDR: {
2212                 struct pfioc_pooladdr   *pp = (struct pfioc_pooladdr *)addr;
2213                 struct pf_pooladdr      *pa;
2214                 struct pfi_kif          *kif = NULL;
2215
2216 #ifndef INET
2217                 if (pp->af == AF_INET) {
2218                         error = EAFNOSUPPORT;
2219                         break;
2220                 }
2221 #endif /* INET */
2222 #ifndef INET6
2223                 if (pp->af == AF_INET6) {
2224                         error = EAFNOSUPPORT;
2225                         break;
2226                 }
2227 #endif /* INET6 */
2228                 if (pp->addr.addr.type != PF_ADDR_ADDRMASK &&
2229                     pp->addr.addr.type != PF_ADDR_DYNIFTL &&
2230                     pp->addr.addr.type != PF_ADDR_TABLE) {
2231                         error = EINVAL;
2232                         break;
2233                 }
2234                 pa = malloc(sizeof(*pa), M_PFRULE, M_WAITOK);
2235                 bcopy(&pp->addr, pa, sizeof(struct pf_pooladdr));
2236                 if (pa->ifname[0])
2237                         kif = malloc(sizeof(*kif), PFI_MTYPE, M_WAITOK);
2238                 PF_RULES_WLOCK();
2239                 if (pp->ticket != V_ticket_pabuf) {
2240                         PF_RULES_WUNLOCK();
2241                         if (pa->ifname[0])
2242                                 free(kif, PFI_MTYPE);
2243                         free(pa, M_PFRULE);
2244                         error = EBUSY;
2245                         break;
2246                 }
2247                 if (pa->ifname[0]) {
2248                         pa->kif = pfi_kif_attach(kif, pa->ifname);
2249                         pfi_kif_ref(pa->kif);
2250                 } else
2251                         pa->kif = NULL;
2252                 if (pa->addr.type == PF_ADDR_DYNIFTL && ((error =
2253                     pfi_dynaddr_setup(&pa->addr, pp->af)) != 0)) {
2254                         if (pa->ifname[0])
2255                                 pfi_kif_unref(pa->kif);
2256                         PF_RULES_WUNLOCK();
2257                         free(pa, M_PFRULE);
2258                         break;
2259                 }
2260                 TAILQ_INSERT_TAIL(&V_pf_pabuf, pa, entries);
2261                 PF_RULES_WUNLOCK();
2262                 break;
2263         }
2264
2265         case DIOCGETADDRS: {
2266                 struct pfioc_pooladdr   *pp = (struct pfioc_pooladdr *)addr;
2267                 struct pf_pool          *pool;
2268                 struct pf_pooladdr      *pa;
2269
2270                 PF_RULES_RLOCK();
2271                 pp->nr = 0;
2272                 pool = pf_get_pool(pp->anchor, pp->ticket, pp->r_action,
2273                     pp->r_num, 0, 1, 0);
2274                 if (pool == NULL) {
2275                         PF_RULES_RUNLOCK();
2276                         error = EBUSY;
2277                         break;
2278                 }
2279                 TAILQ_FOREACH(pa, &pool->list, entries)
2280                         pp->nr++;
2281                 PF_RULES_RUNLOCK();
2282                 break;
2283         }
2284
2285         case DIOCGETADDR: {
2286                 struct pfioc_pooladdr   *pp = (struct pfioc_pooladdr *)addr;
2287                 struct pf_pool          *pool;
2288                 struct pf_pooladdr      *pa;
2289                 u_int32_t                nr = 0;
2290
2291                 PF_RULES_RLOCK();
2292                 pool = pf_get_pool(pp->anchor, pp->ticket, pp->r_action,
2293                     pp->r_num, 0, 1, 1);
2294                 if (pool == NULL) {
2295                         PF_RULES_RUNLOCK();
2296                         error = EBUSY;
2297                         break;
2298                 }
2299                 pa = TAILQ_FIRST(&pool->list);
2300                 while ((pa != NULL) && (nr < pp->nr)) {
2301                         pa = TAILQ_NEXT(pa, entries);
2302                         nr++;
2303                 }
2304                 if (pa == NULL) {
2305                         PF_RULES_RUNLOCK();
2306                         error = EBUSY;
2307                         break;
2308                 }
2309                 bcopy(pa, &pp->addr, sizeof(struct pf_pooladdr));
2310                 pf_addr_copyout(&pp->addr.addr);
2311                 PF_RULES_RUNLOCK();
2312                 break;
2313         }
2314
2315         case DIOCCHANGEADDR: {
2316                 struct pfioc_pooladdr   *pca = (struct pfioc_pooladdr *)addr;
2317                 struct pf_pool          *pool;
2318                 struct pf_pooladdr      *oldpa = NULL, *newpa = NULL;
2319                 struct pf_ruleset       *ruleset;
2320                 struct pfi_kif          *kif = NULL;
2321
2322                 if (pca->action < PF_CHANGE_ADD_HEAD ||
2323                     pca->action > PF_CHANGE_REMOVE) {
2324                         error = EINVAL;
2325                         break;
2326                 }
2327                 if (pca->addr.addr.type != PF_ADDR_ADDRMASK &&
2328                     pca->addr.addr.type != PF_ADDR_DYNIFTL &&
2329                     pca->addr.addr.type != PF_ADDR_TABLE) {
2330                         error = EINVAL;
2331                         break;
2332                 }
2333
2334                 if (pca->action != PF_CHANGE_REMOVE) {
2335 #ifndef INET
2336                         if (pca->af == AF_INET) {
2337                                 error = EAFNOSUPPORT;
2338                                 break;
2339                         }
2340 #endif /* INET */
2341 #ifndef INET6
2342                         if (pca->af == AF_INET6) {
2343                                 error = EAFNOSUPPORT;
2344                                 break;
2345                         }
2346 #endif /* INET6 */
2347                         newpa = malloc(sizeof(*newpa), M_PFRULE, M_WAITOK);
2348                         bcopy(&pca->addr, newpa, sizeof(struct pf_pooladdr));
2349                         if (newpa->ifname[0])
2350                                 kif = malloc(sizeof(*kif), PFI_MTYPE, M_WAITOK);
2351                         newpa->kif = NULL;
2352                 }
2353
2354 #define ERROUT(x)       { error = (x); goto DIOCCHANGEADDR_error; }
2355                 PF_RULES_WLOCK();
2356                 ruleset = pf_find_ruleset(pca->anchor);
2357                 if (ruleset == NULL)
2358                         ERROUT(EBUSY);
2359
2360                 pool = pf_get_pool(pca->anchor, pca->ticket, pca->r_action,
2361                     pca->r_num, pca->r_last, 1, 1);
2362                 if (pool == NULL)
2363                         ERROUT(EBUSY);
2364
2365                 if (pca->action != PF_CHANGE_REMOVE) {
2366                         if (newpa->ifname[0]) {
2367                                 newpa->kif = pfi_kif_attach(kif, newpa->ifname);
2368                                 pfi_kif_ref(newpa->kif);
2369                                 kif = NULL;
2370                         }
2371
2372                         switch (newpa->addr.type) {
2373                         case PF_ADDR_DYNIFTL:
2374                                 error = pfi_dynaddr_setup(&newpa->addr,
2375                                     pca->af);
2376                                 break;
2377                         case PF_ADDR_TABLE:
2378                                 newpa->addr.p.tbl = pfr_attach_table(ruleset,
2379                                     newpa->addr.v.tblname);
2380                                 if (newpa->addr.p.tbl == NULL)
2381                                         error = ENOMEM;
2382                                 break;
2383                         }
2384                         if (error)
2385                                 goto DIOCCHANGEADDR_error;
2386                 }
2387
2388                 switch (pca->action) {
2389                 case PF_CHANGE_ADD_HEAD:
2390                         oldpa = TAILQ_FIRST(&pool->list);
2391                         break;
2392                 case PF_CHANGE_ADD_TAIL:
2393                         oldpa = TAILQ_LAST(&pool->list, pf_palist);
2394                         break;
2395                 default:
2396                         oldpa = TAILQ_FIRST(&pool->list);
2397                         for (int i = 0; oldpa && i < pca->nr; i++)
2398                                 oldpa = TAILQ_NEXT(oldpa, entries);
2399
2400                         if (oldpa == NULL)
2401                                 ERROUT(EINVAL);
2402                 }
2403
2404                 if (pca->action == PF_CHANGE_REMOVE) {
2405                         TAILQ_REMOVE(&pool->list, oldpa, entries);
2406                         switch (oldpa->addr.type) {
2407                         case PF_ADDR_DYNIFTL:
2408                                 pfi_dynaddr_remove(oldpa->addr.p.dyn);
2409                                 break;
2410                         case PF_ADDR_TABLE:
2411                                 pfr_detach_table(oldpa->addr.p.tbl);
2412                                 break;
2413                         }
2414                         if (oldpa->kif)
2415                                 pfi_kif_unref(oldpa->kif);
2416                         free(oldpa, M_PFRULE);
2417                 } else {
2418                         if (oldpa == NULL)
2419                                 TAILQ_INSERT_TAIL(&pool->list, newpa, entries);
2420                         else if (pca->action == PF_CHANGE_ADD_HEAD ||
2421                             pca->action == PF_CHANGE_ADD_BEFORE)
2422                                 TAILQ_INSERT_BEFORE(oldpa, newpa, entries);
2423                         else
2424                                 TAILQ_INSERT_AFTER(&pool->list, oldpa,
2425                                     newpa, entries);
2426                 }
2427
2428                 pool->cur = TAILQ_FIRST(&pool->list);
2429                 PF_ACPY(&pool->counter, &pool->cur->addr.v.a.addr, pca->af);
2430                 PF_RULES_WUNLOCK();
2431                 break;
2432
2433 #undef ERROUT
2434 DIOCCHANGEADDR_error:
2435                 if (newpa != NULL) {
2436                         if (newpa->kif)
2437                                 pfi_kif_unref(newpa->kif);
2438                         free(newpa, M_PFRULE);
2439                 }
2440                 PF_RULES_WUNLOCK();
2441                 if (kif != NULL)
2442                         free(kif, PFI_MTYPE);
2443                 break;
2444         }
2445
2446         case DIOCGETRULESETS: {
2447                 struct pfioc_ruleset    *pr = (struct pfioc_ruleset *)addr;
2448                 struct pf_ruleset       *ruleset;
2449                 struct pf_anchor        *anchor;
2450
2451                 PF_RULES_RLOCK();
2452                 pr->path[sizeof(pr->path) - 1] = 0;
2453                 if ((ruleset = pf_find_ruleset(pr->path)) == NULL) {
2454                         PF_RULES_RUNLOCK();
2455                         error = ENOENT;
2456                         break;
2457                 }
2458                 pr->nr = 0;
2459                 if (ruleset->anchor == NULL) {
2460                         /* XXX kludge for pf_main_ruleset */
2461                         RB_FOREACH(anchor, pf_anchor_global, &V_pf_anchors)
2462                                 if (anchor->parent == NULL)
2463                                         pr->nr++;
2464                 } else {
2465                         RB_FOREACH(anchor, pf_anchor_node,
2466                             &ruleset->anchor->children)
2467                                 pr->nr++;
2468                 }
2469                 PF_RULES_RUNLOCK();
2470                 break;
2471         }
2472
2473         case DIOCGETRULESET: {
2474                 struct pfioc_ruleset    *pr = (struct pfioc_ruleset *)addr;
2475                 struct pf_ruleset       *ruleset;
2476                 struct pf_anchor        *anchor;
2477                 u_int32_t                nr = 0;
2478
2479                 PF_RULES_RLOCK();
2480                 pr->path[sizeof(pr->path) - 1] = 0;
2481                 if ((ruleset = pf_find_ruleset(pr->path)) == NULL) {
2482                         PF_RULES_RUNLOCK();
2483                         error = ENOENT;
2484                         break;
2485                 }
2486                 pr->name[0] = 0;
2487                 if (ruleset->anchor == NULL) {
2488                         /* XXX kludge for pf_main_ruleset */
2489                         RB_FOREACH(anchor, pf_anchor_global, &V_pf_anchors)
2490                                 if (anchor->parent == NULL && nr++ == pr->nr) {
2491                                         strlcpy(pr->name, anchor->name,
2492                                             sizeof(pr->name));
2493                                         break;
2494                                 }
2495                 } else {
2496                         RB_FOREACH(anchor, pf_anchor_node,
2497                             &ruleset->anchor->children)
2498                                 if (nr++ == pr->nr) {
2499                                         strlcpy(pr->name, anchor->name,
2500                                             sizeof(pr->name));
2501                                         break;
2502                                 }
2503                 }
2504                 if (!pr->name[0])
2505                         error = EBUSY;
2506                 PF_RULES_RUNLOCK();
2507                 break;
2508         }
2509
2510         case DIOCRCLRTABLES: {
2511                 struct pfioc_table *io = (struct pfioc_table *)addr;
2512
2513                 if (io->pfrio_esize != 0) {
2514                         error = ENODEV;
2515                         break;
2516                 }
2517                 PF_RULES_WLOCK();
2518                 error = pfr_clr_tables(&io->pfrio_table, &io->pfrio_ndel,
2519                     io->pfrio_flags | PFR_FLAG_USERIOCTL);
2520                 PF_RULES_WUNLOCK();
2521                 break;
2522         }
2523
2524         case DIOCRADDTABLES: {
2525                 struct pfioc_table *io = (struct pfioc_table *)addr;
2526                 struct pfr_table *pfrts;
2527                 size_t totlen;
2528
2529                 if (io->pfrio_esize != sizeof(struct pfr_table)) {
2530                         error = ENODEV;
2531                         break;
2532                 }
2533                 totlen = io->pfrio_size * sizeof(struct pfr_table);
2534                 pfrts = malloc(totlen, M_TEMP, M_WAITOK);
2535                 error = copyin(io->pfrio_buffer, pfrts, totlen);
2536                 if (error) {
2537                         free(pfrts, M_TEMP);
2538                         break;
2539                 }
2540                 PF_RULES_WLOCK();
2541                 error = pfr_add_tables(pfrts, io->pfrio_size,
2542                     &io->pfrio_nadd, io->pfrio_flags | PFR_FLAG_USERIOCTL);
2543                 PF_RULES_WUNLOCK();
2544                 free(pfrts, M_TEMP);
2545                 break;
2546         }
2547
2548         case DIOCRDELTABLES: {
2549                 struct pfioc_table *io = (struct pfioc_table *)addr;
2550                 struct pfr_table *pfrts;
2551                 size_t totlen;
2552
2553                 if (io->pfrio_esize != sizeof(struct pfr_table)) {
2554                         error = ENODEV;
2555                         break;
2556                 }
2557                 totlen = io->pfrio_size * sizeof(struct pfr_table);
2558                 pfrts = malloc(totlen, M_TEMP, M_WAITOK);
2559                 error = copyin(io->pfrio_buffer, pfrts, totlen);
2560                 if (error) {
2561                         free(pfrts, M_TEMP);
2562                         break;
2563                 }
2564                 PF_RULES_WLOCK();
2565                 error = pfr_del_tables(pfrts, io->pfrio_size,
2566                     &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL);
2567                 PF_RULES_WUNLOCK();
2568                 free(pfrts, M_TEMP);
2569                 break;
2570         }
2571
2572         case DIOCRGETTABLES: {
2573                 struct pfioc_table *io = (struct pfioc_table *)addr;
2574                 struct pfr_table *pfrts;
2575                 size_t totlen;
2576
2577                 if (io->pfrio_esize != sizeof(struct pfr_table)) {
2578                         error = ENODEV;
2579                         break;
2580                 }
2581                 totlen = io->pfrio_size * sizeof(struct pfr_table);
2582                 pfrts = malloc(totlen, M_TEMP, M_WAITOK);
2583                 PF_RULES_RLOCK();
2584                 error = pfr_get_tables(&io->pfrio_table, pfrts,
2585                     &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL);
2586                 PF_RULES_RUNLOCK();
2587                 if (error == 0)
2588                         error = copyout(pfrts, io->pfrio_buffer, totlen);
2589                 free(pfrts, M_TEMP);
2590                 break;
2591         }
2592
2593         case DIOCRGETTSTATS: {
2594                 struct pfioc_table *io = (struct pfioc_table *)addr;
2595                 struct pfr_tstats *pfrtstats;
2596                 size_t totlen;
2597
2598                 if (io->pfrio_esize != sizeof(struct pfr_tstats)) {
2599                         error = ENODEV;
2600                         break;
2601                 }
2602                 totlen = io->pfrio_size * sizeof(struct pfr_tstats);
2603                 pfrtstats = malloc(totlen, M_TEMP, M_WAITOK);
2604                 PF_RULES_WLOCK();
2605                 error = pfr_get_tstats(&io->pfrio_table, pfrtstats,
2606                     &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL);
2607                 PF_RULES_WUNLOCK();
2608                 if (error == 0)
2609                         error = copyout(pfrtstats, io->pfrio_buffer, totlen);
2610                 free(pfrtstats, M_TEMP);
2611                 break;
2612         }
2613
2614         case DIOCRCLRTSTATS: {
2615                 struct pfioc_table *io = (struct pfioc_table *)addr;
2616                 struct pfr_table *pfrts;
2617                 size_t totlen;
2618
2619                 if (io->pfrio_esize != sizeof(struct pfr_table)) {
2620                         error = ENODEV;
2621                         break;
2622                 }
2623                 totlen = io->pfrio_size * sizeof(struct pfr_table);
2624                 pfrts = malloc(totlen, M_TEMP, M_WAITOK);
2625                 error = copyin(io->pfrio_buffer, pfrts, totlen);
2626                 if (error) {
2627                         free(pfrts, M_TEMP);
2628                         break;
2629                 }
2630                 PF_RULES_WLOCK();
2631                 error = pfr_clr_tstats(pfrts, io->pfrio_size,
2632                     &io->pfrio_nzero, io->pfrio_flags | PFR_FLAG_USERIOCTL);
2633                 PF_RULES_WUNLOCK();
2634                 free(pfrts, M_TEMP);
2635                 break;
2636         }
2637
2638         case DIOCRSETTFLAGS: {
2639                 struct pfioc_table *io = (struct pfioc_table *)addr;
2640                 struct pfr_table *pfrts;
2641                 size_t totlen;
2642
2643                 if (io->pfrio_esize != sizeof(struct pfr_table)) {
2644                         error = ENODEV;
2645                         break;
2646                 }
2647                 totlen = io->pfrio_size * sizeof(struct pfr_table);
2648                 pfrts = malloc(totlen, M_TEMP, M_WAITOK);
2649                 error = copyin(io->pfrio_buffer, pfrts, totlen);
2650                 if (error) {
2651                         free(pfrts, M_TEMP);
2652                         break;
2653                 }
2654                 PF_RULES_WLOCK();
2655                 error = pfr_set_tflags(pfrts, io->pfrio_size,
2656                     io->pfrio_setflag, io->pfrio_clrflag, &io->pfrio_nchange,
2657                     &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL);
2658                 PF_RULES_WUNLOCK();
2659                 free(pfrts, M_TEMP);
2660                 break;
2661         }
2662
2663         case DIOCRCLRADDRS: {
2664                 struct pfioc_table *io = (struct pfioc_table *)addr;
2665
2666                 if (io->pfrio_esize != 0) {
2667                         error = ENODEV;
2668                         break;
2669                 }
2670                 PF_RULES_WLOCK();
2671                 error = pfr_clr_addrs(&io->pfrio_table, &io->pfrio_ndel,
2672                     io->pfrio_flags | PFR_FLAG_USERIOCTL);
2673                 PF_RULES_WUNLOCK();
2674                 break;
2675         }
2676
2677         case DIOCRADDADDRS: {
2678                 struct pfioc_table *io = (struct pfioc_table *)addr;
2679                 struct pfr_addr *pfras;
2680                 size_t totlen;
2681
2682                 if (io->pfrio_esize != sizeof(struct pfr_addr)) {
2683                         error = ENODEV;
2684                         break;
2685                 }
2686                 totlen = io->pfrio_size * sizeof(struct pfr_addr);
2687                 pfras = malloc(totlen, M_TEMP, M_WAITOK);
2688                 error = copyin(io->pfrio_buffer, pfras, totlen);
2689                 if (error) {
2690                         free(pfras, M_TEMP);
2691                         break;
2692                 }
2693                 PF_RULES_WLOCK();
2694                 error = pfr_add_addrs(&io->pfrio_table, pfras,
2695                     io->pfrio_size, &io->pfrio_nadd, io->pfrio_flags |
2696                     PFR_FLAG_USERIOCTL);
2697                 PF_RULES_WUNLOCK();
2698                 if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK)
2699                         error = copyout(pfras, io->pfrio_buffer, totlen);
2700                 free(pfras, M_TEMP);
2701                 break;
2702         }
2703
2704         case DIOCRDELADDRS: {
2705                 struct pfioc_table *io = (struct pfioc_table *)addr;
2706                 struct pfr_addr *pfras;
2707                 size_t totlen;
2708
2709                 if (io->pfrio_esize != sizeof(struct pfr_addr)) {
2710                         error = ENODEV;
2711                         break;
2712                 }
2713                 totlen = io->pfrio_size * sizeof(struct pfr_addr);
2714                 pfras = malloc(totlen, M_TEMP, M_WAITOK);
2715                 error = copyin(io->pfrio_buffer, pfras, totlen);
2716                 if (error) {
2717                         free(pfras, M_TEMP);
2718                         break;
2719                 }
2720                 PF_RULES_WLOCK();
2721                 error = pfr_del_addrs(&io->pfrio_table, pfras,
2722                     io->pfrio_size, &io->pfrio_ndel, io->pfrio_flags |
2723                     PFR_FLAG_USERIOCTL);
2724                 PF_RULES_WUNLOCK();
2725                 if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK)
2726                         error = copyout(pfras, io->pfrio_buffer, totlen);
2727                 free(pfras, M_TEMP);
2728                 break;
2729         }
2730
2731         case DIOCRSETADDRS: {
2732                 struct pfioc_table *io = (struct pfioc_table *)addr;
2733                 struct pfr_addr *pfras;
2734                 size_t totlen, count;
2735
2736                 if (io->pfrio_esize != sizeof(struct pfr_addr)) {
2737                         error = ENODEV;
2738                         break;
2739                 }
2740                 count = max(io->pfrio_size, io->pfrio_size2);
2741                 totlen = count * sizeof(struct pfr_addr);
2742                 pfras = malloc(totlen, M_TEMP, M_WAITOK);
2743                 error = copyin(io->pfrio_buffer, pfras, totlen);
2744                 if (error) {
2745                         free(pfras, M_TEMP);
2746                         break;
2747                 }
2748                 PF_RULES_WLOCK();
2749                 error = pfr_set_addrs(&io->pfrio_table, pfras,
2750                     io->pfrio_size, &io->pfrio_size2, &io->pfrio_nadd,
2751                     &io->pfrio_ndel, &io->pfrio_nchange, io->pfrio_flags |
2752                     PFR_FLAG_USERIOCTL, 0);
2753                 PF_RULES_WUNLOCK();
2754                 if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK)
2755                         error = copyout(pfras, io->pfrio_buffer, totlen);
2756                 free(pfras, M_TEMP);
2757                 break;
2758         }
2759
2760         case DIOCRGETADDRS: {
2761                 struct pfioc_table *io = (struct pfioc_table *)addr;
2762                 struct pfr_addr *pfras;
2763                 size_t totlen;
2764
2765                 if (io->pfrio_esize != sizeof(struct pfr_addr)) {
2766                         error = ENODEV;
2767                         break;
2768                 }
2769                 totlen = io->pfrio_size * sizeof(struct pfr_addr);
2770                 pfras = malloc(totlen, M_TEMP, M_WAITOK);
2771                 PF_RULES_RLOCK();
2772                 error = pfr_get_addrs(&io->pfrio_table, pfras,
2773                     &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL);
2774                 PF_RULES_RUNLOCK();
2775                 if (error == 0)
2776                         error = copyout(pfras, io->pfrio_buffer, totlen);
2777                 free(pfras, M_TEMP);
2778                 break;
2779         }
2780
2781         case DIOCRGETASTATS: {
2782                 struct pfioc_table *io = (struct pfioc_table *)addr;
2783                 struct pfr_astats *pfrastats;
2784                 size_t totlen;
2785
2786                 if (io->pfrio_esize != sizeof(struct pfr_astats)) {
2787                         error = ENODEV;
2788                         break;
2789                 }
2790                 totlen = io->pfrio_size * sizeof(struct pfr_astats);
2791                 pfrastats = malloc(totlen, M_TEMP, M_WAITOK);
2792                 PF_RULES_RLOCK();
2793                 error = pfr_get_astats(&io->pfrio_table, pfrastats,
2794                     &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL);
2795                 PF_RULES_RUNLOCK();
2796                 if (error == 0)
2797                         error = copyout(pfrastats, io->pfrio_buffer, totlen);
2798                 free(pfrastats, M_TEMP);
2799                 break;
2800         }
2801
2802         case DIOCRCLRASTATS: {
2803                 struct pfioc_table *io = (struct pfioc_table *)addr;
2804                 struct pfr_addr *pfras;
2805                 size_t totlen;
2806
2807                 if (io->pfrio_esize != sizeof(struct pfr_addr)) {
2808                         error = ENODEV;
2809                         break;
2810                 }
2811                 totlen = io->pfrio_size * sizeof(struct pfr_addr);
2812                 pfras = malloc(totlen, M_TEMP, M_WAITOK);
2813                 error = copyin(io->pfrio_buffer, pfras, totlen);
2814                 if (error) {
2815                         free(pfras, M_TEMP);
2816                         break;
2817                 }
2818                 PF_RULES_WLOCK();
2819                 error = pfr_clr_astats(&io->pfrio_table, pfras,
2820                     io->pfrio_size, &io->pfrio_nzero, io->pfrio_flags |
2821                     PFR_FLAG_USERIOCTL);
2822                 PF_RULES_WUNLOCK();
2823                 if (error == 0 && io->pfrio_flags & PFR_FLAG_FEEDBACK)
2824                         error = copyout(pfras, io->pfrio_buffer, totlen);
2825                 free(pfras, M_TEMP);
2826                 break;
2827         }
2828
2829         case DIOCRTSTADDRS: {
2830                 struct pfioc_table *io = (struct pfioc_table *)addr;
2831                 struct pfr_addr *pfras;
2832                 size_t totlen;
2833
2834                 if (io->pfrio_esize != sizeof(struct pfr_addr)) {
2835                         error = ENODEV;
2836                         break;
2837                 }
2838                 totlen = io->pfrio_size * sizeof(struct pfr_addr);
2839                 pfras = malloc(totlen, M_TEMP, M_WAITOK);
2840                 error = copyin(io->pfrio_buffer, pfras, totlen);
2841                 if (error) {
2842                         free(pfras, M_TEMP);
2843                         break;
2844                 }
2845                 PF_RULES_RLOCK();
2846                 error = pfr_tst_addrs(&io->pfrio_table, pfras,
2847                     io->pfrio_size, &io->pfrio_nmatch, io->pfrio_flags |
2848                     PFR_FLAG_USERIOCTL);
2849                 PF_RULES_RUNLOCK();
2850                 if (error == 0)
2851                         error = copyout(pfras, io->pfrio_buffer, totlen);
2852                 free(pfras, M_TEMP);
2853                 break;
2854         }
2855
2856         case DIOCRINADEFINE: {
2857                 struct pfioc_table *io = (struct pfioc_table *)addr;
2858                 struct pfr_addr *pfras;
2859                 size_t totlen;
2860
2861                 if (io->pfrio_esize != sizeof(struct pfr_addr)) {
2862                         error = ENODEV;
2863                         break;
2864                 }
2865                 totlen = io->pfrio_size * sizeof(struct pfr_addr);
2866                 pfras = malloc(totlen, M_TEMP, M_WAITOK);
2867                 error = copyin(io->pfrio_buffer, pfras, totlen);
2868                 if (error) {
2869                         free(pfras, M_TEMP);
2870                         break;
2871                 }
2872                 PF_RULES_WLOCK();
2873                 error = pfr_ina_define(&io->pfrio_table, pfras,
2874                     io->pfrio_size, &io->pfrio_nadd, &io->pfrio_naddr,
2875                     io->pfrio_ticket, io->pfrio_flags | PFR_FLAG_USERIOCTL);
2876                 PF_RULES_WUNLOCK();
2877                 free(pfras, M_TEMP);
2878                 break;
2879         }
2880
2881         case DIOCOSFPADD: {
2882                 struct pf_osfp_ioctl *io = (struct pf_osfp_ioctl *)addr;
2883                 PF_RULES_WLOCK();
2884                 error = pf_osfp_add(io);
2885                 PF_RULES_WUNLOCK();
2886                 break;
2887         }
2888
2889         case DIOCOSFPGET: {
2890                 struct pf_osfp_ioctl *io = (struct pf_osfp_ioctl *)addr;
2891                 PF_RULES_RLOCK();
2892                 error = pf_osfp_get(io);
2893                 PF_RULES_RUNLOCK();
2894                 break;
2895         }
2896
2897         case DIOCXBEGIN: {
2898                 struct pfioc_trans      *io = (struct pfioc_trans *)addr;
2899                 struct pfioc_trans_e    *ioes, *ioe;
2900                 size_t                   totlen;
2901                 int                      i;
2902
2903                 if (io->esize != sizeof(*ioe)) {
2904                         error = ENODEV;
2905                         break;
2906                 }
2907                 totlen = sizeof(struct pfioc_trans_e) * io->size;
2908                 ioes = malloc(totlen, M_TEMP, M_WAITOK);
2909                 error = copyin(io->array, ioes, totlen);
2910                 if (error) {
2911                         free(ioes, M_TEMP);
2912                         break;
2913                 }
2914                 PF_RULES_WLOCK();
2915                 for (i = 0, ioe = ioes; i < io->size; i++, ioe++) {
2916                         switch (ioe->rs_num) {
2917 #ifdef ALTQ
2918                         case PF_RULESET_ALTQ:
2919                                 if (ioe->anchor[0]) {
2920                                         PF_RULES_WUNLOCK();
2921                                         free(ioes, M_TEMP);
2922                                         error = EINVAL;
2923                                         goto fail;
2924                                 }
2925                                 if ((error = pf_begin_altq(&ioe->ticket))) {
2926                                         PF_RULES_WUNLOCK();
2927                                         free(ioes, M_TEMP);
2928                                         goto fail;
2929                                 }
2930                                 break;
2931 #endif /* ALTQ */
2932                         case PF_RULESET_TABLE:
2933                             {
2934                                 struct pfr_table table;
2935
2936                                 bzero(&table, sizeof(table));
2937                                 strlcpy(table.pfrt_anchor, ioe->anchor,
2938                                     sizeof(table.pfrt_anchor));
2939                                 if ((error = pfr_ina_begin(&table,
2940                                     &ioe->ticket, NULL, 0))) {
2941                                         PF_RULES_WUNLOCK();
2942                                         free(ioes, M_TEMP);
2943                                         goto fail;
2944                                 }
2945                                 break;
2946                             }
2947                         default:
2948                                 if ((error = pf_begin_rules(&ioe->ticket,
2949                                     ioe->rs_num, ioe->anchor))) {
2950                                         PF_RULES_WUNLOCK();
2951                                         free(ioes, M_TEMP);
2952                                         goto fail;
2953                                 }
2954                                 break;
2955                         }
2956                 }
2957                 PF_RULES_WUNLOCK();
2958                 error = copyout(ioes, io->array, totlen);
2959                 free(ioes, M_TEMP);
2960                 break;
2961         }
2962
2963         case DIOCXROLLBACK: {
2964                 struct pfioc_trans      *io = (struct pfioc_trans *)addr;
2965                 struct pfioc_trans_e    *ioe, *ioes;
2966                 size_t                   totlen;
2967                 int                      i;
2968
2969                 if (io->esize != sizeof(*ioe)) {
2970                         error = ENODEV;
2971                         break;
2972                 }
2973                 totlen = sizeof(struct pfioc_trans_e) * io->size;
2974                 ioes = malloc(totlen, M_TEMP, M_WAITOK);
2975                 error = copyin(io->array, ioes, totlen);
2976                 if (error) {
2977                         free(ioes, M_TEMP);
2978                         break;
2979                 }
2980                 PF_RULES_WLOCK();
2981                 for (i = 0, ioe = ioes; i < io->size; i++, ioe++) {
2982                         switch (ioe->rs_num) {
2983 #ifdef ALTQ
2984                         case PF_RULESET_ALTQ:
2985                                 if (ioe->anchor[0]) {
2986                                         PF_RULES_WUNLOCK();
2987                                         free(ioes, M_TEMP);
2988                                         error = EINVAL;
2989                                         goto fail;
2990                                 }
2991                                 if ((error = pf_rollback_altq(ioe->ticket))) {
2992                                         PF_RULES_WUNLOCK();
2993                                         free(ioes, M_TEMP);
2994                                         goto fail; /* really bad */
2995                                 }
2996                                 break;
2997 #endif /* ALTQ */
2998                         case PF_RULESET_TABLE:
2999                             {
3000                                 struct pfr_table table;
3001
3002                                 bzero(&table, sizeof(table));
3003                                 strlcpy(table.pfrt_anchor, ioe->anchor,
3004                                     sizeof(table.pfrt_anchor));
3005                                 if ((error = pfr_ina_rollback(&table,
3006                                     ioe->ticket, NULL, 0))) {
3007                                         PF_RULES_WUNLOCK();
3008                                         free(ioes, M_TEMP);
3009                                         goto fail; /* really bad */
3010                                 }
3011                                 break;
3012                             }
3013                         default:
3014                                 if ((error = pf_rollback_rules(ioe->ticket,
3015                                     ioe->rs_num, ioe->anchor))) {
3016                                         PF_RULES_WUNLOCK();
3017                                         free(ioes, M_TEMP);
3018                                         goto fail; /* really bad */
3019                                 }
3020                                 break;
3021                         }
3022                 }
3023                 PF_RULES_WUNLOCK();
3024                 free(ioes, M_TEMP);
3025                 break;
3026         }
3027
3028         case DIOCXCOMMIT: {
3029                 struct pfioc_trans      *io = (struct pfioc_trans *)addr;
3030                 struct pfioc_trans_e    *ioe, *ioes;
3031                 struct pf_ruleset       *rs;
3032                 size_t                   totlen;
3033                 int                      i;
3034
3035                 if (io->esize != sizeof(*ioe)) {
3036                         error = ENODEV;
3037                         break;
3038                 }
3039                 totlen = sizeof(struct pfioc_trans_e) * io->size;
3040                 ioes = malloc(totlen, M_TEMP, M_WAITOK);
3041                 error = copyin(io->array, ioes, totlen);
3042                 if (error) {
3043                         free(ioes, M_TEMP);
3044                         break;
3045                 }
3046                 PF_RULES_WLOCK();
3047                 /* First makes sure everything will succeed. */
3048                 for (i = 0, ioe = ioes; i < io->size; i++, ioe++) {
3049                         switch (ioe->rs_num) {
3050 #ifdef ALTQ
3051                         case PF_RULESET_ALTQ:
3052                                 if (ioe->anchor[0]) {
3053                                         PF_RULES_WUNLOCK();
3054                                         free(ioes, M_TEMP);
3055                                         error = EINVAL;
3056                                         goto fail;
3057                                 }
3058                                 if (!V_altqs_inactive_open || ioe->ticket !=
3059                                     V_ticket_altqs_inactive) {
3060                                         PF_RULES_WUNLOCK();
3061                                         free(ioes, M_TEMP);
3062                                         error = EBUSY;
3063                                         goto fail;
3064                                 }
3065                                 break;
3066 #endif /* ALTQ */
3067                         case PF_RULESET_TABLE:
3068                                 rs = pf_find_ruleset(ioe->anchor);
3069                                 if (rs == NULL || !rs->topen || ioe->ticket !=
3070                                     rs->tticket) {
3071                                         PF_RULES_WUNLOCK();
3072                                         free(ioes, M_TEMP);
3073                                         error = EBUSY;
3074                                         goto fail;
3075                                 }
3076                                 break;
3077                         default:
3078                                 if (ioe->rs_num < 0 || ioe->rs_num >=
3079                                     PF_RULESET_MAX) {
3080                                         PF_RULES_WUNLOCK();
3081                                         free(ioes, M_TEMP);
3082                                         error = EINVAL;
3083                                         goto fail;
3084                                 }
3085                                 rs = pf_find_ruleset(ioe->anchor);
3086                                 if (rs == NULL ||
3087                                     !rs->rules[ioe->rs_num].inactive.open ||
3088                                     rs->rules[ioe->rs_num].inactive.ticket !=
3089                                     ioe->ticket) {
3090                                         PF_RULES_WUNLOCK();
3091                                         free(ioes, M_TEMP);
3092                                         error = EBUSY;
3093                                         goto fail;
3094                                 }
3095                                 break;
3096                         }
3097                 }
3098                 /* Now do the commit - no errors should happen here. */
3099                 for (i = 0, ioe = ioes; i < io->size; i++, ioe++) {
3100                         switch (ioe->rs_num) {
3101 #ifdef ALTQ
3102                         case PF_RULESET_ALTQ:
3103                                 if ((error = pf_commit_altq(ioe->ticket))) {
3104                                         PF_RULES_WUNLOCK();
3105                                         free(ioes, M_TEMP);
3106                                         goto fail; /* really bad */
3107                                 }
3108                                 break;
3109 #endif /* ALTQ */
3110                         case PF_RULESET_TABLE:
3111                             {
3112                                 struct pfr_table table;
3113
3114                                 bzero(&table, sizeof(table));
3115                                 strlcpy(table.pfrt_anchor, ioe->anchor,
3116                                     sizeof(table.pfrt_anchor));
3117                                 if ((error = pfr_ina_commit(&table,
3118                                     ioe->ticket, NULL, NULL, 0))) {
3119                                         PF_RULES_WUNLOCK();
3120                                         free(ioes, M_TEMP);
3121                                         goto fail; /* really bad */
3122                                 }
3123                                 break;
3124                             }
3125                         default:
3126                                 if ((error = pf_commit_rules(ioe->ticket,
3127                                     ioe->rs_num, ioe->anchor))) {
3128                                         PF_RULES_WUNLOCK();
3129                                         free(ioes, M_TEMP);
3130                                         goto fail; /* really bad */
3131                                 }
3132                                 break;
3133                         }
3134                 }
3135                 PF_RULES_WUNLOCK();
3136                 free(ioes, M_TEMP);
3137                 break;
3138         }
3139
3140         case DIOCGETSRCNODES: {
3141                 struct pfioc_src_nodes  *psn = (struct pfioc_src_nodes *)addr;
3142                 struct pf_srchash       *sh;
3143                 struct pf_src_node      *n, *p, *pstore;
3144                 uint32_t                 i, nr = 0;
3145
3146                 if (psn->psn_len == 0) {
3147                         for (i = 0, sh = V_pf_srchash; i <= pf_srchashmask;
3148                             i++, sh++) {
3149                                 PF_HASHROW_LOCK(sh);
3150                                 LIST_FOREACH(n, &sh->nodes, entry)
3151                                         nr++;
3152                                 PF_HASHROW_UNLOCK(sh);
3153                         }
3154                         psn->psn_len = sizeof(struct pf_src_node) * nr;
3155                         break;
3156                 }
3157
3158                 p = pstore = malloc(psn->psn_len, M_TEMP, M_WAITOK);
3159                 for (i = 0, sh = V_pf_srchash; i <= pf_srchashmask;
3160                     i++, sh++) {
3161                     PF_HASHROW_LOCK(sh);
3162                     LIST_FOREACH(n, &sh->nodes, entry) {
3163                         int     secs = time_uptime, diff;
3164
3165                         if ((nr + 1) * sizeof(*p) > (unsigned)psn->psn_len)
3166                                 break;
3167
3168                         bcopy(n, p, sizeof(struct pf_src_node));
3169                         if (n->rule.ptr != NULL)
3170                                 p->rule.nr = n->rule.ptr->nr;
3171                         p->creation = secs - p->creation;
3172                         if (p->expire > secs)
3173                                 p->expire -= secs;
3174                         else
3175                                 p->expire = 0;
3176
3177                         /* Adjust the connection rate estimate. */
3178                         diff = secs - n->conn_rate.last;
3179                         if (diff >= n->conn_rate.seconds)
3180                                 p->conn_rate.count = 0;
3181                         else
3182                                 p->conn_rate.count -=
3183                                     n->conn_rate.count * diff /
3184                                     n->conn_rate.seconds;
3185                         p++;
3186                         nr++;
3187                     }
3188                     PF_HASHROW_UNLOCK(sh);
3189                 }
3190                 error = copyout(pstore, psn->psn_src_nodes,
3191                     sizeof(struct pf_src_node) * nr);
3192                 if (error) {
3193                         free(pstore, M_TEMP);
3194                         break;
3195                 }
3196                 psn->psn_len = sizeof(struct pf_src_node) * nr;
3197                 free(pstore, M_TEMP);
3198                 break;
3199         }
3200
3201         case DIOCCLRSRCNODES: {
3202
3203                 pf_clear_srcnodes(NULL);
3204                 pf_purge_expired_src_nodes();
3205                 break;
3206         }
3207
3208         case DIOCKILLSRCNODES:
3209                 pf_kill_srcnodes((struct pfioc_src_node_kill *)addr);
3210                 break;
3211
3212         case DIOCSETHOSTID: {
3213                 u_int32_t       *hostid = (u_int32_t *)addr;
3214
3215                 PF_RULES_WLOCK();
3216                 if (*hostid == 0)
3217                         V_pf_status.hostid = arc4random();
3218                 else
3219                         V_pf_status.hostid = *hostid;
3220                 PF_RULES_WUNLOCK();
3221                 break;
3222         }
3223
3224         case DIOCOSFPFLUSH:
3225                 PF_RULES_WLOCK();
3226                 pf_osfp_flush();
3227                 PF_RULES_WUNLOCK();
3228                 break;
3229
3230         case DIOCIGETIFACES: {
3231                 struct pfioc_iface *io = (struct pfioc_iface *)addr;
3232                 struct pfi_kif *ifstore;
3233                 size_t bufsiz;
3234
3235                 if (io->pfiio_esize != sizeof(struct pfi_kif)) {
3236                         error = ENODEV;
3237                         break;
3238                 }
3239
3240                 bufsiz = io->pfiio_size * sizeof(struct pfi_kif);
3241                 ifstore = malloc(bufsiz, M_TEMP, M_WAITOK);
3242                 PF_RULES_RLOCK();
3243                 pfi_get_ifaces(io->pfiio_name, ifstore, &io->pfiio_size);
3244                 PF_RULES_RUNLOCK();
3245                 error = copyout(ifstore, io->pfiio_buffer, bufsiz);
3246                 free(ifstore, M_TEMP);
3247                 break;
3248         }
3249
3250         case DIOCSETIFFLAG: {
3251                 struct pfioc_iface *io = (struct pfioc_iface *)addr;
3252
3253                 PF_RULES_WLOCK();
3254                 error = pfi_set_flags(io->pfiio_name, io->pfiio_flags);
3255                 PF_RULES_WUNLOCK();
3256                 break;
3257         }
3258
3259         case DIOCCLRIFFLAG: {
3260                 struct pfioc_iface *io = (struct pfioc_iface *)addr;
3261
3262                 PF_RULES_WLOCK();
3263                 error = pfi_clear_flags(io->pfiio_name, io->pfiio_flags);
3264                 PF_RULES_WUNLOCK();
3265                 break;
3266         }
3267
3268         default:
3269                 error = ENODEV;
3270                 break;
3271         }
3272 fail:
3273         if (sx_xlocked(&pf_ioctl_lock))
3274                 sx_xunlock(&pf_ioctl_lock);
3275         CURVNET_RESTORE();
3276
3277         return (error);
3278 }
3279
3280 void
3281 pfsync_state_export(struct pfsync_state *sp, struct pf_state *st)
3282 {
3283         bzero(sp, sizeof(struct pfsync_state));
3284
3285         /* copy from state key */
3286         sp->key[PF_SK_WIRE].addr[0] = st->key[PF_SK_WIRE]->addr[0];
3287         sp->key[PF_SK_WIRE].addr[1] = st->key[PF_SK_WIRE]->addr[1];
3288         sp->key[PF_SK_WIRE].port[0] = st->key[PF_SK_WIRE]->port[0];
3289         sp->key[PF_SK_WIRE].port[1] = st->key[PF_SK_WIRE]->port[1];
3290         sp->key[PF_SK_STACK].addr[0] = st->key[PF_SK_STACK]->addr[0];
3291         sp->key[PF_SK_STACK].addr[1] = st->key[PF_SK_STACK]->addr[1];
3292         sp->key[PF_SK_STACK].port[0] = st->key[PF_SK_STACK]->port[0];
3293         sp->key[PF_SK_STACK].port[1] = st->key[PF_SK_STACK]->port[1];
3294         sp->proto = st->key[PF_SK_WIRE]->proto;
3295         sp->af = st->key[PF_SK_WIRE]->af;
3296
3297         /* copy from state */
3298         strlcpy(sp->ifname, st->kif->pfik_name, sizeof(sp->ifname));
3299         bcopy(&st->rt_addr, &sp->rt_addr, sizeof(sp->rt_addr));
3300         sp->creation = htonl(time_uptime - st->creation);
3301         sp->expire = pf_state_expires(st);
3302         if (sp->expire <= time_uptime)
3303                 sp->expire = htonl(0);
3304         else
3305                 sp->expire = htonl(sp->expire - time_uptime);
3306
3307         sp->direction = st->direction;
3308         sp->log = st->log;
3309         sp->timeout = st->timeout;
3310         sp->state_flags = st->state_flags;
3311         if (st->src_node)
3312                 sp->sync_flags |= PFSYNC_FLAG_SRCNODE;
3313         if (st->nat_src_node)
3314                 sp->sync_flags |= PFSYNC_FLAG_NATSRCNODE;
3315
3316         sp->id = st->id;
3317         sp->creatorid = st->creatorid;
3318         pf_state_peer_hton(&st->src, &sp->src);
3319         pf_state_peer_hton(&st->dst, &sp->dst);
3320
3321         if (st->rule.ptr == NULL)
3322                 sp->rule = htonl(-1);
3323         else
3324                 sp->rule = htonl(st->rule.ptr->nr);
3325         if (st->anchor.ptr == NULL)
3326                 sp->anchor = htonl(-1);
3327         else
3328                 sp->anchor = htonl(st->anchor.ptr->nr);
3329         if (st->nat_rule.ptr == NULL)
3330                 sp->nat_rule = htonl(-1);
3331         else
3332                 sp->nat_rule = htonl(st->nat_rule.ptr->nr);
3333
3334         pf_state_counter_hton(st->packets[0], sp->packets[0]);
3335         pf_state_counter_hton(st->packets[1], sp->packets[1]);
3336         pf_state_counter_hton(st->bytes[0], sp->bytes[0]);
3337         pf_state_counter_hton(st->bytes[1], sp->bytes[1]);
3338
3339 }
3340
3341 static void
3342 pf_tbladdr_copyout(struct pf_addr_wrap *aw)
3343 {
3344         struct pfr_ktable *kt;
3345
3346         KASSERT(aw->type == PF_ADDR_TABLE, ("%s: type %u", __func__, aw->type));
3347
3348         kt = aw->p.tbl;
3349         if (!(kt->pfrkt_flags & PFR_TFLAG_ACTIVE) && kt->pfrkt_root != NULL)
3350                 kt = kt->pfrkt_root;
3351         aw->p.tbl = NULL;
3352         aw->p.tblcnt = (kt->pfrkt_flags & PFR_TFLAG_ACTIVE) ?
3353                 kt->pfrkt_cnt : -1;
3354 }
3355
3356 /*
3357  * XXX - Check for version missmatch!!!
3358  */
3359 static void
3360 pf_clear_states(void)
3361 {
3362         struct pf_state *s;
3363         u_int i;
3364
3365         for (i = 0; i <= pf_hashmask; i++) {
3366                 struct pf_idhash *ih = &V_pf_idhash[i];
3367 relock:
3368                 PF_HASHROW_LOCK(ih);
3369                 LIST_FOREACH(s, &ih->states, entry) {
3370                         s->timeout = PFTM_PURGE;
3371                         /* Don't send out individual delete messages. */
3372                         s->state_flags |= PFSTATE_NOSYNC;
3373                         pf_unlink_state(s, PF_ENTER_LOCKED);
3374                         goto relock;
3375                 }
3376                 PF_HASHROW_UNLOCK(ih);
3377         }
3378 }
3379
3380 static int
3381 pf_clear_tables(void)
3382 {
3383         struct pfioc_table io;
3384         int error;
3385
3386         bzero(&io, sizeof(io));
3387
3388         error = pfr_clr_tables(&io.pfrio_table, &io.pfrio_ndel,
3389             io.pfrio_flags);
3390
3391         return (error);
3392 }
3393
3394 static void
3395 pf_clear_srcnodes(struct pf_src_node *n)
3396 {
3397         struct pf_state *s;
3398         int i;
3399
3400         for (i = 0; i <= pf_hashmask; i++) {
3401                 struct pf_idhash *ih = &V_pf_idhash[i];
3402
3403                 PF_HASHROW_LOCK(ih);
3404                 LIST_FOREACH(s, &ih->states, entry) {
3405                         if (n == NULL || n == s->src_node)
3406                                 s->src_node = NULL;
3407                         if (n == NULL || n == s->nat_src_node)
3408                                 s->nat_src_node = NULL;
3409                 }
3410                 PF_HASHROW_UNLOCK(ih);
3411         }
3412
3413         if (n == NULL) {
3414                 struct pf_srchash *sh;
3415
3416                 for (i = 0, sh = V_pf_srchash; i <= pf_srchashmask;
3417                     i++, sh++) {
3418                         PF_HASHROW_LOCK(sh);
3419                         LIST_FOREACH(n, &sh->nodes, entry) {
3420                                 n->expire = 1;
3421                                 n->states = 0;
3422                         }
3423                         PF_HASHROW_UNLOCK(sh);
3424                 }
3425         } else {
3426                 /* XXX: hash slot should already be locked here. */
3427                 n->expire = 1;
3428                 n->states = 0;
3429         }
3430 }
3431
3432 static void
3433 pf_kill_srcnodes(struct pfioc_src_node_kill *psnk)
3434 {
3435         struct pf_src_node_list  kill;
3436
3437         LIST_INIT(&kill);
3438         for (int i = 0; i <= pf_srchashmask; i++) {
3439                 struct pf_srchash *sh = &V_pf_srchash[i];
3440                 struct pf_src_node *sn, *tmp;
3441
3442                 PF_HASHROW_LOCK(sh);
3443                 LIST_FOREACH_SAFE(sn, &sh->nodes, entry, tmp)
3444                         if (PF_MATCHA(psnk->psnk_src.neg,
3445                               &psnk->psnk_src.addr.v.a.addr,
3446                               &psnk->psnk_src.addr.v.a.mask,
3447                               &sn->addr, sn->af) &&
3448                             PF_MATCHA(psnk->psnk_dst.neg,
3449                               &psnk->psnk_dst.addr.v.a.addr,
3450                               &psnk->psnk_dst.addr.v.a.mask,
3451                               &sn->raddr, sn->af)) {
3452                                 pf_unlink_src_node(sn);
3453                                 LIST_INSERT_HEAD(&kill, sn, entry);
3454                                 sn->expire = 1;
3455                         }
3456                 PF_HASHROW_UNLOCK(sh);
3457         }
3458
3459         for (int i = 0; i <= pf_hashmask; i++) {
3460                 struct pf_idhash *ih = &V_pf_idhash[i];
3461                 struct pf_state *s;
3462
3463                 PF_HASHROW_LOCK(ih);
3464                 LIST_FOREACH(s, &ih->states, entry) {
3465                         if (s->src_node && s->src_node->expire == 1)
3466                                 s->src_node = NULL;
3467                         if (s->nat_src_node && s->nat_src_node->expire == 1)
3468                                 s->nat_src_node = NULL;
3469                 }
3470                 PF_HASHROW_UNLOCK(ih);
3471         }
3472
3473         psnk->psnk_killed = pf_free_src_nodes(&kill);
3474 }
3475
3476 /*
3477  * XXX - Check for version missmatch!!!
3478  */
3479
3480 /*
3481  * Duplicate pfctl -Fa operation to get rid of as much as we can.
3482  */
3483 static int
3484 shutdown_pf(void)
3485 {
3486         int error = 0;
3487         u_int32_t t[5];
3488         char nn = '\0';
3489
3490         do {
3491                 if ((error = pf_begin_rules(&t[0], PF_RULESET_SCRUB, &nn))
3492                     != 0) {
3493                         DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: SCRUB\n"));
3494                         break;
3495                 }
3496                 if ((error = pf_begin_rules(&t[1], PF_RULESET_FILTER, &nn))
3497                     != 0) {
3498                         DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: FILTER\n"));
3499                         break;          /* XXX: rollback? */
3500                 }
3501                 if ((error = pf_begin_rules(&t[2], PF_RULESET_NAT, &nn))
3502                     != 0) {
3503                         DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: NAT\n"));
3504                         break;          /* XXX: rollback? */
3505                 }
3506                 if ((error = pf_begin_rules(&t[3], PF_RULESET_BINAT, &nn))
3507                     != 0) {
3508                         DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: BINAT\n"));
3509                         break;          /* XXX: rollback? */
3510                 }
3511                 if ((error = pf_begin_rules(&t[4], PF_RULESET_RDR, &nn))
3512                     != 0) {
3513                         DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: RDR\n"));
3514                         break;          /* XXX: rollback? */
3515                 }
3516
3517                 /* XXX: these should always succeed here */
3518                 pf_commit_rules(t[0], PF_RULESET_SCRUB, &nn);
3519                 pf_commit_rules(t[1], PF_RULESET_FILTER, &nn);
3520                 pf_commit_rules(t[2], PF_RULESET_NAT, &nn);
3521                 pf_commit_rules(t[3], PF_RULESET_BINAT, &nn);
3522                 pf_commit_rules(t[4], PF_RULESET_RDR, &nn);
3523
3524                 if ((error = pf_clear_tables()) != 0)
3525                         break;
3526
3527 #ifdef ALTQ
3528                 if ((error = pf_begin_altq(&t[0])) != 0) {
3529                         DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: ALTQ\n"));
3530                         break;
3531                 }
3532                 pf_commit_altq(t[0]);
3533 #endif
3534
3535                 pf_clear_states();
3536
3537                 pf_clear_srcnodes(NULL);
3538
3539                 /* status does not use malloced mem so no need to cleanup */
3540                 /* fingerprints and interfaces have their own cleanup code */
3541
3542                 /* Free counters last as we updated them during shutdown. */
3543                 counter_u64_free(V_pf_default_rule.states_cur);
3544                 counter_u64_free(V_pf_default_rule.states_tot);
3545                 counter_u64_free(V_pf_default_rule.src_nodes);
3546
3547                 for (int i = 0; i < PFRES_MAX; i++)
3548                         counter_u64_free(V_pf_status.counters[i]);
3549                 for (int i = 0; i < LCNT_MAX; i++)
3550                         counter_u64_free(V_pf_status.lcounters[i]);
3551                 for (int i = 0; i < FCNT_MAX; i++)
3552                         counter_u64_free(V_pf_status.fcounters[i]);
3553                 for (int i = 0; i < SCNT_MAX; i++)
3554                         counter_u64_free(V_pf_status.scounters[i]);
3555         } while(0);
3556
3557         return (error);
3558 }
3559
3560 #ifdef INET
3561 static int
3562 pf_check_in(void *arg, struct mbuf **m, struct ifnet *ifp, int dir,
3563     struct inpcb *inp)
3564 {
3565         int chk;
3566
3567         chk = pf_test(PF_IN, ifp, m, inp);
3568         if (chk && *m) {
3569                 m_freem(*m);
3570                 *m = NULL;
3571         }
3572
3573         if (chk != PF_PASS)
3574                 return (EACCES);
3575         return (0);
3576 }
3577
3578 static int
3579 pf_check_out(void *arg, struct mbuf **m, struct ifnet *ifp, int dir,
3580     struct inpcb *inp)
3581 {
3582         int chk;
3583
3584         chk = pf_test(PF_OUT, ifp, m, inp);
3585         if (chk && *m) {
3586                 m_freem(*m);
3587                 *m = NULL;
3588         }
3589
3590         if (chk != PF_PASS)
3591                 return (EACCES);
3592         return (0);
3593 }
3594 #endif
3595
3596 #ifdef INET6
3597 static int
3598 pf_check6_in(void *arg, struct mbuf **m, struct ifnet *ifp, int dir,
3599     struct inpcb *inp)
3600 {
3601         int chk;
3602
3603         /*
3604          * In case of loopback traffic IPv6 uses the real interface in
3605          * order to support scoped addresses. In order to support stateful
3606          * filtering we have change this to lo0 as it is the case in IPv4.
3607          */
3608         CURVNET_SET(ifp->if_vnet);
3609         chk = pf_test6(PF_IN, (*m)->m_flags & M_LOOP ? V_loif : ifp, m, inp);
3610         CURVNET_RESTORE();
3611         if (chk && *m) {
3612                 m_freem(*m);
3613                 *m = NULL;
3614         }
3615         if (chk != PF_PASS)
3616                 return (EACCES);
3617         return (0);
3618 }
3619
3620 static int
3621 pf_check6_out(void *arg, struct mbuf **m, struct ifnet *ifp, int dir,
3622     struct inpcb *inp)
3623 {
3624         int chk;
3625
3626         CURVNET_SET(ifp->if_vnet);
3627         chk = pf_test6(PF_OUT, ifp, m, inp);
3628         CURVNET_RESTORE();
3629         if (chk && *m) {
3630                 m_freem(*m);
3631                 *m = NULL;
3632         }
3633         if (chk != PF_PASS)
3634                 return (EACCES);
3635         return (0);
3636 }
3637 #endif /* INET6 */
3638
3639 static int
3640 hook_pf(void)
3641 {
3642 #ifdef INET
3643         struct pfil_head *pfh_inet;
3644 #endif
3645 #ifdef INET6
3646         struct pfil_head *pfh_inet6;
3647 #endif
3648
3649         if (V_pf_pfil_hooked)
3650                 return (0);
3651
3652 #ifdef INET
3653         pfh_inet = pfil_head_get(PFIL_TYPE_AF, AF_INET);
3654         if (pfh_inet == NULL)
3655                 return (ESRCH); /* XXX */
3656         pfil_add_hook(pf_check_in, NULL, PFIL_IN | PFIL_WAITOK, pfh_inet);
3657         pfil_add_hook(pf_check_out, NULL, PFIL_OUT | PFIL_WAITOK, pfh_inet);
3658 #endif
3659 #ifdef INET6
3660         pfh_inet6 = pfil_head_get(PFIL_TYPE_AF, AF_INET6);
3661         if (pfh_inet6 == NULL) {
3662 #ifdef INET
3663                 pfil_remove_hook(pf_check_in, NULL, PFIL_IN | PFIL_WAITOK,
3664                     pfh_inet);
3665                 pfil_remove_hook(pf_check_out, NULL, PFIL_OUT | PFIL_WAITOK,
3666                     pfh_inet);
3667 #endif
3668                 return (ESRCH); /* XXX */
3669         }
3670         pfil_add_hook(pf_check6_in, NULL, PFIL_IN | PFIL_WAITOK, pfh_inet6);
3671         pfil_add_hook(pf_check6_out, NULL, PFIL_OUT | PFIL_WAITOK, pfh_inet6);
3672 #endif
3673
3674         V_pf_pfil_hooked = 1;
3675         return (0);
3676 }
3677
3678 static int
3679 dehook_pf(void)
3680 {
3681 #ifdef INET
3682         struct pfil_head *pfh_inet;
3683 #endif
3684 #ifdef INET6
3685         struct pfil_head *pfh_inet6;
3686 #endif
3687
3688         if (V_pf_pfil_hooked == 0)
3689                 return (0);
3690
3691 #ifdef INET
3692         pfh_inet = pfil_head_get(PFIL_TYPE_AF, AF_INET);
3693         if (pfh_inet == NULL)
3694                 return (ESRCH); /* XXX */
3695         pfil_remove_hook(pf_check_in, NULL, PFIL_IN | PFIL_WAITOK,
3696             pfh_inet);
3697         pfil_remove_hook(pf_check_out, NULL, PFIL_OUT | PFIL_WAITOK,
3698             pfh_inet);
3699 #endif
3700 #ifdef INET6
3701         pfh_inet6 = pfil_head_get(PFIL_TYPE_AF, AF_INET6);
3702         if (pfh_inet6 == NULL)
3703                 return (ESRCH); /* XXX */
3704         pfil_remove_hook(pf_check6_in, NULL, PFIL_IN | PFIL_WAITOK,
3705             pfh_inet6);
3706         pfil_remove_hook(pf_check6_out, NULL, PFIL_OUT | PFIL_WAITOK,
3707             pfh_inet6);
3708 #endif
3709
3710         V_pf_pfil_hooked = 0;
3711         return (0);
3712 }
3713
3714 static void
3715 pf_load_vnet(void)
3716 {
3717         TAILQ_INIT(&V_pf_tags);
3718         TAILQ_INIT(&V_pf_qids);
3719
3720         pfattach_vnet();
3721         V_pf_vnet_active = 1;
3722 }
3723
3724 static int
3725 pf_load(void)
3726 {
3727         int error;
3728
3729         rw_init(&pf_rules_lock, "pf rulesets");
3730         sx_init(&pf_ioctl_lock, "pf ioctl");
3731         sx_init(&pf_end_lock, "pf end thread");
3732
3733         pf_mtag_initialize();
3734
3735         pf_dev = make_dev(&pf_cdevsw, 0, 0, 0, 0600, PF_NAME);
3736         if (pf_dev == NULL)
3737                 return (ENOMEM);
3738
3739         pf_end_threads = 0;
3740         error = kproc_create(pf_purge_thread, NULL, &pf_purge_proc, 0, 0, "pf purge");
3741         if (error != 0)
3742                 return (error);
3743
3744         pfi_initialize();
3745
3746         return (0);
3747 }
3748
3749 static void
3750 pf_unload_vnet(void)
3751 {
3752         int error;
3753
3754         V_pf_vnet_active = 0;
3755         V_pf_status.running = 0;
3756         swi_remove(V_pf_swi_cookie);
3757         error = dehook_pf();
3758         if (error) {
3759                 /*
3760                  * Should not happen!
3761                  * XXX Due to error code ESRCH, kldunload will show
3762                  * a message like 'No such process'.
3763                  */
3764                 printf("%s : pfil unregisteration fail\n", __FUNCTION__);
3765                 return;
3766         }
3767
3768         PF_RULES_WLOCK();
3769         shutdown_pf();
3770         PF_RULES_WUNLOCK();
3771
3772         pf_unload_vnet_purge();
3773
3774         pf_normalize_cleanup();
3775         PF_RULES_WLOCK();
3776         pfi_cleanup_vnet();
3777         PF_RULES_WUNLOCK();
3778         pfr_cleanup();
3779         pf_osfp_flush();
3780         pf_cleanup();
3781         if (IS_DEFAULT_VNET(curvnet))
3782                 pf_mtag_cleanup();
3783 }
3784
3785 static void
3786 pf_unload(void)
3787 {
3788
3789         sx_xlock(&pf_end_lock);
3790         pf_end_threads = 1;
3791         while (pf_end_threads < 2) {
3792                 wakeup_one(pf_purge_thread);
3793                 sx_sleep(pf_purge_proc, &pf_end_lock, 0, "pftmo", 0);
3794         }
3795         sx_xunlock(&pf_end_lock);
3796
3797         if (pf_dev != NULL)
3798                 destroy_dev(pf_dev);
3799
3800         pfi_cleanup();
3801
3802         rw_destroy(&pf_rules_lock);
3803         sx_destroy(&pf_ioctl_lock);
3804         sx_destroy(&pf_end_lock);
3805 }
3806
3807 static void
3808 vnet_pf_init(void *unused __unused)
3809 {
3810
3811         pf_load_vnet();
3812 }
3813 VNET_SYSINIT(vnet_pf_init, SI_SUB_PROTO_FIREWALL, SI_ORDER_THIRD,
3814     vnet_pf_init, NULL);
3815
3816 static void
3817 vnet_pf_uninit(const void *unused __unused)
3818 {
3819
3820         pf_unload_vnet();
3821 }
3822 SYSUNINIT(pf_unload, SI_SUB_PROTO_FIREWALL, SI_ORDER_SECOND, pf_unload, NULL);
3823 VNET_SYSUNINIT(vnet_pf_uninit, SI_SUB_PROTO_FIREWALL, SI_ORDER_THIRD,
3824     vnet_pf_uninit, NULL);
3825
3826
3827 static int
3828 pf_modevent(module_t mod, int type, void *data)
3829 {
3830         int error = 0;
3831
3832         switch(type) {
3833         case MOD_LOAD:
3834                 error = pf_load();
3835                 break;
3836         case MOD_UNLOAD:
3837                 /* Handled in SYSUNINIT(pf_unload) to ensure it's done after
3838                  * the vnet_pf_uninit()s */
3839                 break;
3840         default:
3841                 error = EINVAL;
3842                 break;
3843         }
3844
3845         return (error);
3846 }
3847
3848 static moduledata_t pf_mod = {
3849         "pf",
3850         pf_modevent,
3851         0
3852 };
3853
3854 DECLARE_MODULE(pf, pf_mod, SI_SUB_PROTO_FIREWALL, SI_ORDER_SECOND);
3855 MODULE_VERSION(pf, PF_MODVER);